The present invention relates to a yarn winding
device adapted to wind a yarn unwound from a yarn supplying
bobbin to form a package, and an automatic winder including
the yarn winding device.
10 2. Description of the Related Art
WO 2011/040546 A1 describes, as a winding unit of an
automatic winder, a winding unit in which an accumulator
adapted to store a yarn is provided between a yarn supplying
section and a winding section. Furthermore, WO
15 2011/040546 A1 describes, as the accumulator, an
accumulator including a rotary storage drum. The rotary
storage drum unwinds the yarn from the yarn supplying bobbin
and winds and stores the unwound yarn by rotating. The
winding section pulls out the yarn stored on the rotary
20 storage drum and winds the pulled-out yarn to form a package.
An annular member made of a rubber material is wound around
an end on the winding section side in an axial direction
of the rotary storage drum. The yarn wound around the
rotary storage drum is passed between the rotary storage
25 drum and the annular member, and then fed towards the
winding section. Thus, when the winding section pulls out
the yarn from the rotary storage drum, the pulled-out yarn
can be prevented from greatly bulging (balloon is prevented
from being enlarged) towards an outer side by a centrifugal
30 force with the annular member.
In WO 2011/040546 A1, the yarn is passed between the
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rotary storage drum and the annular member, and then fed
towards the winding section, as described above. Thus,
when carrying out yarn hooking on the winding unit, the
operator needs to carry out an operation of passing the yarn
5 unwound from the yarn supplying bobbin through a gap between
the rotary storage drum and the annular member, and then
guiding the yarn to the winding section. As a result, the
operation for yarn hooking becomes complex.
10 BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide
a yarn winding device capable of easily carrying out yarn
hooking, and an automatic winder including the yarn winding
device.
15 A yarn winding device according to the present
invention includes a yarn supplying section including a
bobbin supporting section adapted to support a yarn
supplying bobbin around which a yarn spun by a ring spinning
machine is wound; a yarn storage section adapted to store
20 the yarn from the yarn supplying bobbin; a package forming
section adapted to pull out the yarn stored in the yarn
storage section and wind the yarn to form a package; a yarn
defect detection device adapted to detect a yarn defect in
the yarn spun by the ring spinning machine and cut the yarn
25 to remove the yarn defect when the yarn defect is detected;
and a yarn joining section provided between the yarn
supplying section and the yarn storage section and adapted
to join the yarn from the yarn supplying section and the
yarn from the yarn storage section when the yarn is cut by
30 the yarn defect detection device or when the yarn of the
yarn supplying bobbin runs out and a new yarn supplying
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bobbin is supplied to the yarn supplying section, wherein
the yarn storage section includes a rotary storage drum
adapted to wind and store the yarn from the yarn supplying
bobbin by rotating, the rotary storage drum includes a drum
5 body adapted to store the yarn by winding the yarn, and a
yarn regulating section provided at an end on the package
forming section side in an axial direction of the drum body
and adapted to regulate movement of the pulled-out yarn when
the yarn is pulled out from the drum body towards the package
10 forming section, and the yarn regulating section is
configured to hook the yarn passed between the yarn
supplying section and the package forming section and to
wind the yarn around the rotary storage drum when the rotary
storage drum is rotated in the yarn hooked state.
15 BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view illustrating a schematic
configuration of an automatic winder according to an
embodiment of the present invention;
FIG. 2 is a block diagram illustrating a schematic
20 electrical configuration of the automatic winder according
to the embodiment of the present invention;
FIG. 3 is a view illustrating a schematic structure
of a winding unit seen from an arrangement direction;
FIG. 4 is a view illustrating a yarn storage section
25 13 of FIG. 3 and a portion at a periphery thereof in an
enlarged manner;
FIG. 5A is a cross-sectional view taken along an axial
direction of a rotary storage drum, and FIG. 5B is a view
of the rotary storage drum seen from a package forming
30 section side;
FIG. 6 is a view illustrating a state of the yarn
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storage section when a yarn is passed between the yarn
supplying section and the package forming section in an
initial yarn hooking operation;
FIG. 7 is a view illustrating a state of the yarn
5 storage section when the yarn hooking operation on a
traveler is carried out in the initial yarn hooking
operation;
FIG. 8 is a flowchart illustrating a flow of
operations of the winding unit;
10 FIG. 9 is a view illustrating a state of the yarn
storage section when the yarn hooking operation on the
rotary storage drum is carried out in the initial yarn
hooking operation;
FIG. 10A is a flowchart illustrating a flow of a yarn
15 defect removing operation, FIG. 10B is a flowchart
illustrating a flow of a yarn breakage recovering operation,
and FIG. 10C is a flowchart illustrating a flow of a bobbin
replacing operation;
FIG. 11 is a flowchart illustrating a flow of control
20 of a rotation speed of the rotary storage drum during normal
winding;
FIG. 12 is a flowchart illustrating a flow of control
of a rotation speed of the winding drum;
FIG. 13 is a view corresponding to FIG. 6 according
25 to a first alternative embodiment;
FIG. 14 is a view corresponding to FIG. 5A according
to a second alternative embodiment;
FIG. 15A is a view corresponding to FIG. 5A according
to a third alternative embodiment, and FIG. 15B is a view
30 corresponding to FIG. 5A according to a fourth alternative
embodiment;
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FIG. 16 is a view corresponding to FIG. 5A according
to a fifth alternative embodiment;
FIG. 17A is a view corresponding to FIG. 5A according
to a sixth alternative embodiment, and FIG. 17B is a view
5 corresponding to FIG. 5B according to the sixth alternative
embodiment;
FIG. 18A is a view corresponding to FIG. 5A according
to a seventh alternative embodiment, and FIG. 18B is a view
corresponding to FIG. 5B according to the seventh
10 alternative embodiment;
FIG. 19 is a view corresponding to FIG. 4 according
to an eighth alternative embodiment;
FIG. 20A is a view corresponding to FIG. 5A according
to the eighth alternative embodiment, and FIG. 20B is a view
15 corresponding to FIG. 5B according to the eighth
alternative embodiment;
FIG. 21A is a view corresponding to FIG. 5A according
to a ninth alternative embodiment, and FIG. 21B is a view
corresponding to FIG. 5B according to the ninth alternative
20 embodiment;
FIG. 22A is a view corresponding to FIG. 5A according
to a tenth alternative embodiment, and FIG. 22B is a view
corresponding to FIG. 5B according to the tenth alternative
embodiment;
25 FIG. 23A is a view of a rotary storage drum according
to an eleventh alternative embodiment seen in the same
direction as FIG. 4, and FIG. 23B is a view of FIG. 23A seen
from the package forming section side excluding a flange;
FIG. 24 is a view corresponding to FIG. 4 according
30 to a twelfth alternative embodiment; and
FIG. 25A is a view corresponding to FIG. 5A according
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to a thirteenth alternative embodiment, and FIG. 25B is a
view corresponding to FIG. 5B according to the thirteenth
alternative embodiment.
5 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
A description will be made on a preferred embodiment
of the present invention.
(Overall configuration of automatic winder)
As illustrated in FIGS. 1 and 2, an automatic winder
10 1 according to the present embodiment includes a plurality
of winding units 2 (“yarn winding device” of the present
invention), an automatic doffing device 3 (“yarn hooking
device” of the present invention), and a control device 4.
The plurality of winding units 2 are arranged in a
15 predetermined arrangement direction (left and right
direction in FIG. 1). The winding unit 2 winds a yarn Y
unwound from a yarn supplying bobbin Bk, around which the
yarn spun by a ring spinning machine is wound, around a
winding bobbin Bm to form a package P. The winding unit
20 2 includes a first control section 10, and the operation
of the winding unit 2 is controlled by the first control
section 10. The automatic doffing device 3 is arranged
above the plurality of winding units 2. The automatic
doffing device 3 moves in the arrangement direction across
25 the plurality of winding units 2, and is adapted to collect
the package P formed by the winding unit 2, mount an empty
winding bobbin Bm, and carry out a predetermined yarn
hooking operation on this winding bobbin Bm. The automatic
doffing device 3 also includes a second control section 9,
30 and the operation of the automatic doffing device 3 is
controlled by the second control section 9. The control
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device 4 is electrically connected to the first control
section 10 of each of the plurality of winding units 2 and
the second control section 9 of the automatic doffing device
3, and carries out instructions of control to each control
5 section 9, 10, reception of signals from each control
section 9, 10, and the like.
(Winding unit)
Next, a description will be made on the winding unit
2. As illustrated in FIGS. 3 to 5B, the winding unit 2
10 includes a yarn supplying section 11, a package forming
section 12, a yarn storage section 13, and a yarn processing
section 14. A front and back direction in FIGS. 3, 4, and
5A is a direction orthogonal to both the arrangement
direction and a vertical direction. In FIG. 4, a yarn
15 guiding member 52, a blow-down nozzle 53, and a guide member
97 are illustrated in cross-section.
(Yarn supplying section)
The yarn supplying section 11 includes a yarn
supplying bobbin supporting section 21 (“bobbin supporting
20 section” of the present invention) adapted to support the
yarn supplying bobbin Bk, around which the yarn spun by the
ring spinning machine is wound, a yarn unwinding assisting
device 22, and a remaining yarn sensor 23. The yarn
supplying section 11 further includes a bobbin supplying
25 device (not illustrated) adapted to supply a new yarn
supplying bobbin Bk to the yarn supplying bobbin supporting
section 21. The bobbin supplying device may be a magazine
type supplying device, a tray type supplying device, and
the like. When all the spun yarn Y (hereinafter simply
30 referred to as yarn Y) is pulled out from the yarn supplying
bobbin Bk supported by the yarn supplying bobbin supporting
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section 21, the yarn supplying section 11 discharges the
empty bobbin held by the yarn supplying bobbin supporting
section 21, and the bobbin supplying device supplies a new
yarn supplying bobbin Bk to the yarn supplying bobbin
5 supporting section 21.
The yarn unwinding assisting device 22 lowers a
regulating member 26 placed over a core tube of the yarn
supplying bobbin Bk in conjunction with the unwinding of
the yarn Y from the yarn supplying bobbin Bk, thus assisting
10 the unwinding of the yarn Y from the yarn supplying bobbin
Bk. The regulating member 26 makes contact with the yarn
Y unwound from the yarn supplying bobbin Bk to suppress the
yarn Y from greatly bulging towards a radially outer side
of the yarn supplying bobbin Bk by a centrifugal force at
15 the time of unwinding the yarn Y, thus assisting the
unwinding of the yarn Y from the yarn supplying bobbin Bk.
The remaining yarn sensor 23 is provided at a portion in
proximity to a lower end portion of the yarn supplying
bobbin Bk supported by the yarn supplying bobbin supporting
20 section 21. The remaining yarn sensor 23 is provided to
detect whether or not the yarn Y is remaining on the yarn
supplying bobbin Bk.
(Package forming section)
The package forming section 12 includes a cradle 30
25 (not illustrated in detail) configured to be able to hold
the winding bobbin Bm, and a winding drum 31 adapted to
traverse the yarn Y and to rotate the winding bobbin Bm.
The cradle 30 is configured to swing in a direction of
approaching or separating with respect to the winding drum
30 31, whereby the package P is brought into contact with or
separated from the winding drum 31. A spiral-shaped
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traverse groove 31a is formed on an outer peripheral surface
of the winding drum 31, and by guiding the yarn Y along the
traverse groove, the yarn Y is traversed in an axial
direction (perpendicular direction in the plane of drawing
5 of FIG. 3) of the winding bobbin Bm.
The winding drum 31 can be driven by a winding drum
motor 35, and when the winding drum 31 is rotated, the
winding bobbin Bm brought into contact with the winding drum
31 or the package P formed by winding the yarn Y around the
10 winding bobbin Bm is caused to rotate accompanying the
rotation of the winding drum 31, so that the yarn Y is wound
around the winding bobbin Bm.
(Yarn storage section)
The yarn storage section 13 is provided to store the
15 yarn Y unwound from the yarn supplying bobbin Bk, and
includes a rotary storage drum 50, a yarn guide 51, the yarn
guiding member 52, the blow-down nozzle 53, an upper limit
yarn sensor 55a, a lower limit yarn sensor 55b, a lowest
limit yarn sensor 55c, and the like.
20 The rotary storage drum 50 is a drum rotatable about
an axis C tilted with respect to the vertical direction,
and the yarn Y is stored on the rotary storage drum 50 by
winding the yarn Y around the rotary storage drum 50, as
will be described later. The rotary storage drum 50
25 includes a drum body 61, a flange 62, and a yarn regulating
section 63.
The drum body 61 is a cylindrical member made of a
metal material. In an internal space 61a of the drum body
61, a wall portion 61b is provided at a central part in the
30 axial direction. A rotation shaft 43a of a storage drum
motor 43 is attached to the wall portion 61b. When the
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storage drum motor 43 is driven, the rotary storage drum
50 rotates. A tapered portion 61c, which diameter becomes
smaller towards the package forming section 12 side (upper
right side in FIG. 4), is provided at an end on the yarn
5 supplying section 11 side (lower left side of FIG. 4) of
the drum body 61. A portion on the package forming section
12 side of the tapered portion 61c of the drum body 61 is
a straight portion 61d having a constant diameter. The
straight portion 61d is a portion for winding and storing
10 the yarn Y supplied from the yarn supplying bobbin Bk.
The flange 62 is a circular member when seen from the
axial direction of the rotary storage drum 50, and is
inserted into the internal space 61a of the drum body 61
from the package forming section 12 side (upper right side
15 in FIG. 4). The flange 62 projects out towards the package
forming section 12 side from the internal space 61a. The
flange 62 has substantially the same diameter as the
internal space 61a at the portion inserted into the internal
space 61a, and the portion that projects out from the
20 internal space 61a is a tapered portion 62a in which the
diameter becomes larger towards the package forming section
12.
The yarn regulating section 63 includes a base
material 71, a guide rail 72, a traveler 73 (“yarn hooking
25 section” of the present invention), a contact plate 74
(“resistance applying section” of the present invention),
and a holding plate 75.
The base material 71 is a member having a circular
column shape, and is fixed to a surface on the package
30 forming section 12 side of the flange 62. The guide rail
72 is an annular member made of a metal material that
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surrounds the outer peripheral surface of the base material
71 in a peripheral direction. The guide rail 72 includes
a bulged portion 72a, a bent portion 72b, and a rail portion
72c. The bulged portion 72a is fixed to the outer
5 peripheral surface of the base material 71, and projects
out towards the radially outer side of the rotary storage
drum 50 from the outer peripheral surface of the base
material 71. The bent portion 72b is formed by bending the
end on the outer side of the bulged portion 72a by about
10 90 towards the package forming section 12. The rail
portion 72c extends from the distal end of the bent portion
72b to both sides in the radial direction of the rotary
storage drum 50.
The traveler 73 is a substantially C-shaped member
15 made of a metal material, and is attached to the rail portion
72c of the guide rail 72 with a C-shaped opening 73a directed
towards the yarn supplying section 11 in the axial direction
of the rotary storage drum 50. Thus, the traveler 73 is
movable in the peripheral direction of the rotary storage
20 drum 50 along the outer peripheral surface of the rotary
storage drum 50 by moving along the rail portion 72c of the
guide rail 72. As will be described later, the yarn Y can
be introduced from the opening 73a to the traveler 73.
The contact plate 74 is a circular plate-shaped body
25 having a diameter larger than that of the base material 71,
and is arranged on an upper surface of the base material
71. The contact plate 74 is made of
polytetrafluoroethylene. The portion that projects
farther out towards the radially outer side of the rotary
30 storage drum 50 than the base material 71 of the contact
plate 74 is brought into contact with an upper end portion
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of the traveler 73. Thus, when the traveler 73 is moved
along the guide rail 72 (moved with respect to the rotary
storage drum 50), the movement of the traveler 73 is
inhibited by a frictional force generated between the
5 contact plate 74 and the traveler 73. In other words, in
the present embodiment, the frictional force between the
traveler 73 and the contact plate 74 becomes a resistance
that inhibits the movement of the traveler 73 with respect
to the rotary storage drum 50.
10 The holding plate 75 is a circular plate-shaped body
having a diameter slightly smaller than that of the contact
plate 74, and is arranged on the upper surface of the contact
plate 74. The holding plate 75 is made of nitrile butadiene
rubber (NBR). The contact plate 74 and the holding plate
15 75 are fixed to the base material 71 with a bolt (not
illustrated) passed through the contact plate 74 and the
holding plate 75. The contact plate 74 is thereby pushed
towards the traveler 73 by the holding plate 75.
Furthermore, the degree of pushing of the contact plate 74
20 of the holding plate 75 is adjusted by adjusting the degree
of tightening of the bolt, so that the magnitude of the
frictional force generated between the moving traveler 73
and the contact plate 74 can be adjusted.
The yarn guide 51 is arranged on the package forming
25 section 12 side of the rotary storage drum 50, and is located
on the axis C of the rotary storage drum 50. The yarn Y
stored on the rotary storage drum 50 is hooked to the yarn
guide 51, and then pulled out towards the package forming
section 12.
30 The yarn Y wound around the rotary storage drum 50
is hooked to the traveler 73 and the yarn guide 51 on the
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package forming section 12 side, and then pulled out towards
the package forming section 12. When the yarn Y is pulled
out from the rotary storage drum 50, the movement of the
pulled-out yarn Y is regulated by the traveler 73. The
5 pulled-out yarn Y is thereby held, and the yarn Y wound
around the rotary storage drum 50 is prevented from
slackening.
In the present embodiment, when the yarn Y is pulled
out from the rotary storage drum 50 towards the package
10 forming section 12, the traveler 73 is moved in the
peripheral direction of the rotary storage drum 50 along
the outer peripheral surface of the rotary storage drum 50
together with the pulled-out yarn Y. The yarn Y thus can
be smoothly pulled out. In this case, the traveler 73
15 receives the resistance that inhibits the movement with
respect to the rotary storage drum 50 by the frictional
force generated between the traveler 73 and the contact
plate 74, and thus the tension applied to the pulled-out
yarn Y can be increased compared to the case where the
20 contact plate 74 is not provided.
The yarn guiding member 52 is a tubular member
extending in a straight form, and is arranged such that one
end faces the tapered portion 61c of the rotary storage drum
50. The yarn Y that travelled from the yarn supplying
25 section 11 side to the yarn guiding member 52 thus travels
through an internal flow path 52a of the yarn guiding member
52 to be guided to the tapered portion 61c by the yarn guiding
member 52. Therefore, when the rotary storage drum 50 is
rotated, the yarn Y is first wound around the tapered
30 portion 61c. The yarn Y wound around the tapered portion
61c is moved to the straight portion 61d along the outer
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peripheral surface of the tapered portion 61c and stored
at the straight portion 61d.
The blow-down nozzle 53 is arranged adjacent to the
yarn guiding member 52, and includes a yarn flow path 53a
5 connected to the internal flow path 52a of the yarn guiding
member 52, and a blow-down flow path 53b connected to the
yarn flow path 53a and extending in a manner inclined with
respect to the yarn flow path 53a. A pressure air source
82 is connected to the blow-down flow path 53b via an
10 electromagnetic valve 81.
When the electromagnetic valve 81 is opened, the
pressure air of the pressure air source 82 flows into the
yarn flow path 53a through the blow-down flow path 53b,
whereby an airflow from the yarn guiding member 52 towards
15 the opposite side (guide member 97 side to be described
later) is generated in the yarn flow path 53a. Thus, during
the yarn joining operation, the yarn end of the yarn Y from
the yarn storage section 13 located on the rotary storage
drum 50 is sucked and the yarn Y from the yarn storage section
20 13 is pulled out.
The upper limit yarn sensor 55a is arranged to face
the outer peripheral surface of the end on the package
forming section 12 side in the axial direction of the drum
body 61. The lower limit yarn sensor 55b is arranged to
25 face the outer peripheral surface of a middle portion in
the axial direction of the drum body 61. The lowest limit
yarn sensor 55c is arranged to face the outer peripheral
surface of the end on the yarn supplying section 11 side
in the axial direction of the drum body 61. The yarn sensors
30 55a to 55c are sensors adapted to detect presence and/or
absence of the yarn Y. Depending on which of the yarn
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sensors 55a to 55c detects the yarn Y, it is possible to
know how much yarn Y is stored on the rotary storage drum
50. In the present embodiment, the yarn sensors 55a to 55c
collectively correspond to a yarn storage amount detecting
5 section according to the present invention.
(Yarn processing section)
The yarn processing section 14 is arranged between
the yarn supplying section 11 and the yarn storage section
13, and includes a lower yarn blow-up device 91, a tensor
10 (yarn tension applying device) 92, an upper yarn catching
device 93, a yarn joining device 94, a lower yarn catching
device 95, and a yarn clearer (yarn defect detection device)
96 arranged in this order from the lower side (yarn
supplying section 11 side). The yarn processing section
15 14 also includes the guide member 97 in addition to the
structures arranged along the vertical direction.
The lower yarn blow-up device 91 is connected to the
pressure air source (not illustrated), and generates the
upward airflow to blow up the yarn Y from the yarn supplying
20 section 11 towards the yarn joining device 94 at the time
of the yarn joining operation.
The tensor 92 applies a prescribed tension on the yarn
Y unwound from the yarn supplying bobbin Bk. The tensor
92 may be, for example, a gate type tensor in which movable
25 comb teeth are arranged with respect to fixed comb teeth.
The upper yarn catching device 93 is connected to a
negative pressure source (not illustrated), and sucks and
catches the yarn Y from the yarn storage section 13 to
introduce the yarn Y from the yarn storage section 13 to
30 the yarn joining device 94 at the time of the yarn joining
operation, as will be described later.
17 / 64
The yarn joining device 94 joins the yarn Y from the
yarn supplying section 11 and the yarn Y from the yarn
storage section 13 when a yarn defect occurs, when the yarn
breaks by tension, when replacing the bobbin, and the like.
5 The yarn joining device 94 may be a mechanical type or a
type that uses fluid such as compressed air.
The lower yarn catching device 95 is connected to the
negative pressure source (not illustrated), and sucks and
catches the yarn Y from the yarn supplying section 11 blown
10 up by the lower yarn blow-up device 91 to introduce the yarn
Y from the yarn supplying section 11 into the yarn joining
device 94.
The yarn clearer 96 detects the yarn defect in the
yarn spun by the ring spinning machine and the presence
15 and/or absence of the yarn by monitoring the thickness of
the yarn Y with an appropriate sensor. The yarn clearer
96 includes a cutter (not illustrated) adapted to cut the
yarn Y when the yarn defect is detected.
The guide member 97 is arranged on the side (right
20 side in FIG. 3) opposite from the yarn guiding member 52
of the blow-down nozzle 53, and vertically extends between
the height at which the blow-down nozzle 53 is arranged and
the height at which the upper yarn catching device 93 is
arranged. A vertically-extending yarn path 97a opened at
25 both ends is formed inside the guide member 97. The yarn
path 97a is bent towards the blow-down nozzle 53 (upper left
side in FIG. 3) at the upper end portion to face the yarn
flow path 53a of the blow-down nozzle 53. The lower end
portion of the yarn path 97a is bent towards the upper yarn
30 catching device 93 (left side in FIG. 3) to face the upper
yarn catching device 93. A slit 97b extending over the
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entire length of the guide member 97 is formed at the side
wall of the left side (blow-down nozzle 53 and upper yarn
catching device 93 side) in FIG. 3 of the guide member 97.
Thus, as described above, the airflow is generated
5 in the yarn flow path 53a by opening the electromagnetic
valve 81 during the yarn joining operation, so that when
the yarn Y from the yarn storage section 13 is pulled out,
the pulled-out yarn Y is introduced into the upper end
portion of the yarn path 97a of the guide member 97 from
10 the blow-down nozzle 53. The yarn Y introduced to the upper
end portion of the yarn path 97a is guided to the lower end
portion of the yarn path 97a along the wall surface of the
yarn path 97a, and sucked by the upper yarn catching device
93, as indicated by a chain double dashed line in FIGS. 3
15 and 4. The yarn Y sucked by the upper yarn catching device
93 is pulled out to the outside of the guide member 97 from
the slit 97b by being pulled towards the left side in FIG.
3, and introduced into the yarn joining device 94.
Next, a description will be made on the first control
20 section 10 of the winding unit 2. The first control section
10 includes a CPU (Central Processing Unit), which is an
arithmetic processing unit, a ROM (Read Only Memory)
storing a control program to be executed by the CPU and data
used in the control program, and a RAM (Random Access
25 Memory) for temporarily storing the data during execution
of the program, and carries out reception of a signal from
the remaining yarn sensor 23, the yarn sensors 55a to 55c,
the yarn clearer 96, and the like, control of the operation
of the yarn unwinding assisting device 22, the winding drum
30 motor 35, the storage drum motor 43, the electromagnetic
valve 81, the yarn joining device 94, the cutter of the yarn
19 / 64
clearer 96, and the like.
Next, a description will be made on the operation of
the winding unit 2.
(First yarn hooking operation)
5 Prior to forming the package P in the automatic winder
1 (winding unit 2), the yarn hooking operation on the
winding unit 2 is carried out. The procedure of carrying
out the yarn hooking operation on the winding unit 2 is as
follows. The operator first unwinds the yarn Y from the
10 yarn supplying bobbin Bk, and sets the yarn Y on the yarn
unwinding assisting device 22, the lower yarn blow-up
device 91, the tensor 92, and the yarn guide 51 in this order,
and fixes the yarn Y to the winding bobbin Bm. In this case,
as illustrated in FIG. 6, the yarn Y pulled out towards the
15 upper side from the tensor 92 is hooked directly to the yarn
guide 51 without being passed through the yarn flow path
53a of the blow-down nozzle 53 and the internal flow path
52a of the yarn guiding member 52. The yarn Y fixed to the
winding bobbin Bm is hooked to the winding bobbin Bm by the
20 automatic doffing device 3.
As illustrated in FIG. 7, by setting the yarn Y as
described above, the operator then introduces the portion,
proximate to the traveler 73, of the yarn Y passed between
the yarn supplying section 11 and the package forming
25 section 12 into the traveler 73 from the opening 73a. The
yarn hooking operation on the traveler 73 is thereby carried
out. In this case, if the traveler 73 is at a position
spaced apart from the yarn Y of the rail portion 72c, the
traveler 73 is brought close to the yarn Y by being moved
30 along the rail portion 72c and then the yarn Y is introduced
into the traveler 73. Thus, in the present embodiment, the
20 / 64
yarn Y passed between the yarn supplying section 11 and the
package forming section 12 is introduced into the traveler
73 from the opening 73a of the traveler 73 to carry out the
yarn hooking operation on the traveler 73, whereby the yarn
5 hooking operation on the traveler 73 can be easily carried
out.
After carrying out the yarn hooking operation on the
traveler 73, the power of the winding unit 2 is turned ON
and the like to cause the winding unit 2 to start the
10 operation. As illustrated in FIG. 8, the winding unit 2
first starts the rotation of the rotary storage drum 50 by
the control of the first control section 10 (S101). The
yarn Y is thereby unwound from the yarn supplying bobbin
Bk. Furthermore, as illustrated in FIG. 9, the traveler
15 73 is rotated in conjunction with the rotation of the rotary
storage drum 50, and the unwound yarn Y is wound around the
outer peripheral surface of the rotary storage drum 50,
whereby the yarn hooking operation on the rotary storage
drum 50 is carried out.
20 As opposed to the present embodiment, if the contact
plate 74 is not provided and the resistance that inhibits
the movement of the traveler 73 with respect to the rotary
storage drum 50 is too small, the traveler 73 does not rotate
even if the rotary storage drum 50 is rotated, and the yarn
25 Y unwound from the yarn supplying bobbin Bk may not be wound
around the outer peripheral surface of the rotary storage
drum 50 (yarn hooking operation may not be carried out on
the rotary storage drum 50). On the contrary, in the
present embodiment, the contact plate 74 is provided, so
30 that the resistance that inhibits the movement with respect
to the rotary storage drum 50 is applied to the traveler
21 / 64
73. Therefore, as described above, the traveler 73 rotates
in conjunction with the rotation of the rotary storage drum
50, and the yarn hooking operation can be carried out on
the rotary storage drum 50.
5 This state is maintained until the yarn hooking
operation on the rotary storage drum 50 is completed (S102:
NO), and when the yarn hooking operation on the rotary
storage drum 50 is completed (S102: YES), the rotation of
the winding drum 31 is started (S103). Thus, in the winding
10 unit 2, a storing operation in which the yarn Y of the yarn
supplying bobbin Bk is unwound and the unwound yarn Y is
stored by being wound around the outer peripheral surface
of the rotary storage drum 50 by the rotation of the rotary
storage drum 50, and a package forming operation in which
15 the yarn Y stored on the rotary storage drum 50 is pulled
out and the pulled-out yarn Y is wound around the winding
bobbin Bm while being traversed by the rotation of the
winding bobbin Bm that rotates in conjunction with the
rotation of the winding drum 31 are carried out.
20 In the present embodiment, by rotating the rotary
storage drum 50 as described above, the yarn Y of the yarn
supplying bobbin Bk is unwound, and the unwound yarn Y can
be stored by being wound around the rotary storage drum 50.
Therefore, in the present embodiment, it is not necessary
25 to provide a mechanism for unwinding the yarn Y from the
yarn supplying bobbin Bk and the like separately from the
rotary storage drum 50.
While the yarn defect is not detected (S104: NO), the
yarn is not broken by tension (S105: NO), and the yarn Y
30 is remaining on the yarn supplying bobbin Bk (S106: NO),
the normal winding in which both the storing operation and
22 / 64
the package forming operation are carried out is continued.
When the yarn defect is detected (S104: YES), a yarn defect
removing operation, to be described later, is carried out
(S107), and the process returns to S104. When the yarn
5 breakage is detected (S105: YES), a yarn breakage
recovering operation, to be described later, is carried out
(S108), and the process returns to S104. When there is no
remaining yarn Y on the yarn supplying bobbin Bk (S106: YES),
a bobbin replacing operation, to be described later, is
10 carried out (S109), and the process returns to S104.
In the present embodiment, when the yarn defect is
detected by the yarn clearer 96, determination is made that
the yarn defect is detected in S104. When the yarn Y is
not detected by the yarn clearer 96 and the detection is
15 made that there is remaining yarn Y on the yarn supplying
bobbin Bk by the remaining yarn sensor 23, determination
is made that the yarn breakage occurred by tension in S105.
When the yarn Y is not detected by the yarn clearer 96 and
the detection is made that there is no more remaining yarn
20 Y on the yarn supplying bobbin Bk by the remaining yarn
sensor 23, determination is made that there is no remaining
yarn on the yarn supplying bobbin Bk in S106.
(Yarn defect removing operation)
Next, a description will be made on the yarn defect
25 removing operation of S107. As illustrated in FIG. 10A,
in the yarn defect removing operation, the yarn Y is first
cut by the cutter of the yarn clearer 96 (S201). Then, the
rotation (storing operation) of the rotary storage drum 50
is stopped (S202). Thus, the yarn end of the yarn Y from
30 the yarn storage section 13 (package forming section 12)
of the cut yarn Y is located on the outer peripheral surface
23 / 64
of the rotary storage drum 50 or in proximity thereto, and
the yarn end of the yarn Y from the yarn supplying section
11 is drooped towards the lower side from the lower yarn
blow-up device 91.
5 Next, the yarn Y from the yarn storage section 13 is
pulled out towards the yarn supplying section 11 (S203).
More specifically, in S203, the rotary storage drum 50 is
first rotated in a direction opposite to that of the storing
operation, and the electromagnetic valve 81 is opened to
10 generate the airflow in the yarn flow path 53a from the
blow-down flow path 53b. The yarn end of the yarn Y from
the yarn storage section 13 located on the outer peripheral
surface of the rotary storage drum 50 is then sucked from
the yarn guiding member 52, and the sucked yarn end of the
15 yarn Y from the yarn storage section 13 is pulled out to
the lower end portion of the yarn path 97a through the
internal flow path 52a of the yarn guiding member 52, the
yarn flow path 53a of the blow-down nozzle 53, and the yarn
path 97a of the guide member 97, as described above.
20 In the present embodiment, the yarn Y is not passed
through the yarn flow path 53a of the blow-down nozzle 53
and the internal flow path 52a of the yarn guiding member
52 in the first yarn hooking operation, but the yarn Y is
passed through these passages according to the operation
25 of the S203.
Then, the yarn Y from the yarn storage section 13
pulled out to the lower end portion of the yarn path 97a
in S203 is introduced to the yarn joining device 94 by being
sucked with the upper yarn catching device 93, as described
30 above, (S204). The yarn Y from the yarn supplying section
11 is then blown up by the lower yarn blow-up device 91,
24 / 64
and the blown-up yarn Y is sucked and caught by the lower
yarn catching device 95 to introduce the yarn Y from the
yarn supplying section 11 to the yarn joining device 94
(S205). Note that S205 may be carried out after S202, and
5 before S203, S204 or in parallel with S203 and S204.
The yarn joining device 94 then carries out the yarn
joining operation of the introduced yarn Y from the yarn
supplying section 11 and the yarn Y from the yarn storage
section 13 (S206). After the completion of the yarn joining
10 operation, the rotation (storing operation) of the rotary
storage drum 50 is resumed (S207), and the process returns
to S104.
(Yarn breakage recovering operation)
Next, a description will be made on the yarn breakage
15 recovering operation of S108. As illustrated in FIG. 10B,
in the yarn breakage recovering operation, the rotation
(storing operation) of the rotary storage drum 50 is first
stopped (S301). Then, the yarn Y from the yarn supplying
section 11 and the yarn Y from the yarn storage section 13
20 are respectively introduced to the yarn joining device 94
(S302). In S302, the yarn Y from the yarn supplying section
11 and the yarn Y from the yarn storage section 13 are
introduced to the yarn joining device 94 according to the
procedure similar to S204 and S205 described above, for
25 example. Furthermore, at this time, depending on the
position where the yarn breakage occurred, the yarn Y from
the yarn storage section 13 is pulled out similarly to S203,
and the pulled-out yarn Y from the yarn storage section 13
is introduced to the yarn joining device. The yarn joining
30 device 94 then executes the yarn joining operation of the
introduced yarn Y from the yarn supplying section 11 and
25 / 64
the yarn Y from the yarn storage section 13 (S303). After
the completion of the yarn joining operation, the rotation
(storing operation) of the rotary storage drum 50 is resumed
(S304), and the process returns to S104.
5 (Bobbin replacing operation)
Next, a description will be made on the bobbin
replacing operation of S109. As illustrated in FIG. 10C,
in the bobbin replacing operation, the rotation (storing
operation) of the rotary storage drum 50 is first stopped
10 (S401). Then, the yarn supplying bobbin Bk, with no yarn
remaining thereon, is discharged from the yarn supplying
bobbin supporting section 21, and a new yarn supplying
bobbin Bk is supplied from the bobbin supplying device to
the yarn supplying bobbin supporting section 21 (S402).
15 Then, the yarn Y from the yarn supplying section 11 and the
yarn Y from the yarn storage section 13 are respectively
introduced to the yarn joining device 94 (S403). In S403,
the yarn Y from the yarn supplying section 11 and the yarn
Y from the yarn storage section 13 are introduced to the
20 yarn joining device 94 according to the procedure similar
to S204 and S205 described above, for example. In the
bobbin replacing operation, the introduction of the yarn
Y from the yarn storage section 13 to the yarn joining device
94 in S403 may be carried out before S402. The yarn joining
25 device 94 then executes the yarn joining operation of the
introduced yarn Y from the yarn supplying section 11 and
the yarn Y from the yarn storage section 13 (S404). After
the yarn joining operation is completed, the rotation
(storing operation) of the rotary storage drum 50 is
30 resumed (S405), and the process returns to S104.
(Rotation speed of rotary storage drum during normal
26 / 64
winding)
Next, a description will be made on the rotation speed
of the rotary storage drum 50 during the normal winding in
which both the storing operation and the package forming
5 operation are carried out using a flowchart of FIG. 11. The
flow of FIG. 11 is started when the normal winding is started,
that is, when both the storing operation and the package
forming operation are started. During the normal winding,
when the amount of yarn Y stored on the rotary storage drum
10 50 is small and the yarn Y is not detected by the upper limit
yarn sensor 55a (S501: NO), the rotary storage drum 50 is
rotated at a predetermined rotation speed Vc1 (S502). The
rotation speed Vc1 is a rotation speed at which the
unwinding speed of the yarn Y from the yarn supplying bobbin
15 Bk becomes faster than the pull-out speed of the yarn Y from
the rotary storage drum 50 when the winding drum 31 is
rotated at a rotation speed Vm1, as will be described later.
Therefore, while the rotary storage drum 50 is being rotated
at the rotation speed Vc1, the amount of yarn Y stored on
20 the rotary storage drum 50 increases.
When the yarn Y is detected by the upper limit yarn
sensor 55a (S501: YES), the rotary storage drum 50 is
rotated at a rotation speed Vc2 lower than the rotation
speed Vc1 (S503). The rotation speed Vc2 is a rotation
25 speed at which the unwinding speed of the yarn Y from the
yarn supplying bobbin Bk becomes lower than the pull-out
speed of the yarn Y from the rotary storage drum 50 when
the winding drum 31 is rotated at the rotation speed Vm1,
as will be described later. Therefore, while the rotary
30 storage drum 50 is being rotated at the rotation speed Vc2,
the amount of yarn Y stored on the rotary storage drum 50
27 / 64
is reduced.
While the normal winding is continued (S504: YES),
the rotation speed of the rotary storage drum 50 is
controlled as in S501 to S503. Thus, the amount of yarn
5 Y stored on the rotary storage drum 50 is maintained at an
amount close to the storage amount corresponding to the
upper limit yarn sensor 55a. When the normal winding is
not continued, such as when the rotation of the rotary
storage drum 50 is stopped as in S202, S301, S401, and the
10 like, the flow of FIG. 11 is terminated.
(Rotation speed of winding drum)
Next, a description will be made on the rotation speed
of the winding drum 31 using a flowchart of FIG. 12. The
flow of FIG. 12 is started at the start of the package forming
15 operation.
At the start of the package forming operation, the
winding drum 31 is rotated at the predetermined rotation
speed Vm1 (S601). While the storing operation is being
carried out (while the rotary storage drum 50 is rotating)
20 (S602: NO), the rotation speed of the winding drum 31 is
maintained at Vm1.
When the rotation (storing operation) of the rotary
storage drum 50 is stopped (S602: YES) in S201, S301, S401,
described above, the rotation speed of the winding drum 31
25 is maintained at Vm1 (S604) when the yarn Y is detected by
the lower limit yarn sensor 55b (S603: YES). When the yarn
Y is not detected by the lower limit yarn sensor 55b (S603:
NO) but the yarn Y is detected by the lowest limit yarn sensor
55c (S605: YES), the rotation speed of the winding drum 31
30 is decelerated to Vm2, which is lower than Vm1 (S606). When
the yarn Y is not detected even with the lowest limit yarn
28 / 64
sensor 55c (S605: NO), the rotation of the winding drum 31,
that is, the package forming operation is stopped (S607).
Thus, in the present embodiment, while the storing
operation is stopped, the rotation speed of the winding drum
5 31 (pull-out speed of the yarn Y from the rotary storage
drum 50 in the package forming operation) is reduced as the
amount of yarn Y stored on the rotary storage drum 50 becomes
smaller.
Until the storing operation is resumed in S207, S305,
10 and S404 (S608: NO), the rotation speed of the winding drum
31 is controlled as described in S603 to S607, and when the
storing operation is resumed in S207, S305, S404 (S608: YES),
the process returns to S601.
In the present embodiment, the yarn Y unwound from
15 the yarn supplying bobbin Bk is stored on the rotary storage
drum 50, and hence the package forming operation can be
continued even when the storing operation is stopped in S201,
S301, and S401 as described above. However, since the yarn
Y is not supplied to the rotary storage drum 50 while the
20 storing operation is stopped, the amount of yarn Y stored
on the rotary storage drum 50 is reduced by continuing the
package forming operation.
On the contrary, in the present embodiment, the
package P can be efficiently formed by rotating the winding
25 drum 31 at the rotation speed Vm1, which is the same as that
during the normal winding, when the amount of yarn Y stored
on the rotary storage drum 50 is large (when the amount of
yarn Y is greater than or equal to the storage amount
corresponding to the lower limit yarn sensor 55b). When
30 the amount of yarn Y stored on the rotary storage drum 50
becomes small (when the amount of yarn Y is smaller than
29 / 64
the storage amount corresponding to the lower limit yarn
sensor 55b), the rotation speed of the winding drum 31 is
set to Vm2, which is lower than Vm1. The reduction of the
yarn Y stored on the rotary storage drum 50 can be suppressed,
5 and the time during which the package forming operation is
continued can be increased. As a result, the time that can
be used for the yarn joining operation and the like can be
increased. Furthermore, when the amount of yarn Y stored
on the rotary storage drum 50 is further reduced and is
10 hardly stored (when the amount of yarn Y is smaller than
the storage amount corresponding to the lowest limit yarn
sensor 55c), the rotation (package forming operation) of
the winding drum 31 is stopped. Thus, the case where there
is completely no yarn Y on the rotary storage drum 50 can
15 be prevented.
Alternative embodiments in which various changes are
made on the present embodiment will now be described.
In the above-described embodiment, the yarn Y is not
passed through the yarn flow path 53a of the blow-down
20 nozzle 53 and the internal flow path 52a of the yarn guiding
member 52 in the first yarn hooking operation, but the
present invention is not limited thereto. The yarn Y may
be passed through the yarn flow path 53a and the internal
flow path 52a in the first yarn hooking operation.
25 In the above-described embodiment, as illustrated in
FIG. 6, the operator hooks the yarn Y passed between the
yarn supplying section 11 and the package forming section
12 on the traveler 73 as illustrated in FIG. 7, and then
starts the rotation of the rotary storage drum 50, but the
30 present invention is not limited thereto. In one
alternative embodiment (first alternative embodiment), as
30 / 64
illustrated in FIG. 13, the rotary storage drum 50 is
arranged at a position where a movement path (one portion
of yarn regulating section 63) along the rail portion 72c
of the traveler 73 intersects the yarn Y passed between the
5 yarn supplying section 11 and the package forming section
12 similarly to FIG. 6 (located on a yarn path of the yarn
Y passed between the yarn supplying section 11 and the
package forming section 12).
In this case, the yarn hooking operation on the
10 traveler 73 by the operator is not carried out and the
rotation of the rotary storage drum 50 is started. Then,
a portion that overlaps the movement path of the traveler
73 of the yarn Y passed between the yarn supplying section
11 and the package forming section 12 is introduced from
15 the opening 73a to the traveler 73, so that the yarn hooking
operation on the traveler 73 is automatically carried out.
In this case, the traveler 73 functions as a yarn hooking
section. Thereafter, the rotary storage drum 50 is further
rotated, so that the yarn hooking operation on the rotary
20 storage drum 50 is carried out, similarly to the
above-described embodiment.
In this case, compared to the above-described
embodiment, the degree of freedom in the arrangement of the
rotary storage drum 50 is lowered but the operator does not
25 need to manually carry out the yarn hooking operation on
the traveler 73, and thus the burden of the operator in the
first yarn hooking operation can be reduced.
In the above-described embodiment, the resistance
that inhibits the movement with respect to the rotary
30 storage drum 50 is applied to the traveler 73 by bringing
the contact plate 74 into contact with the traveler 73, but
31 / 64
the present invention is not limited thereto.
In another alternative embodiment (second
alternative embodiment), as illustrated in FIG. 14, a
rubber magnet plate 101 (“resistance applying section” in
5 the present invention) is arranged in place of the contact
plate 74 at a position where the contact plate 74 (see FIG.
5B) is arranged in the above-described embodiment. In this
case, the magnetic force generated between the traveler 73
and the rubber magnet plate 101 becomes the resistance that
10 inhibits the movement of the traveler 73 with respect to
the rotary storage drum 50. Furthermore, in this case, the
magnetic force generated between the traveler 73 and the
rubber magnet plate 101 attracts the traveler 73 towards
the package forming section 12.
15 In another alternative embodiment (third alternative
embodiment), as illustrated in FIG. 15A, an annular magnet
106 (“resistance applying section” in the present
invention) is arranged on the bulged portion 72a of the
guide rail 72 instead of providing the contact plate 74 (see
20 FIG. 5B). The magnet 106 is, for example, a neodymium
magnet. In this case, the magnetic force generated between
the traveler 73 and the magnet 106 becomes the resistance
that inhibits the movement of the traveler 73 with respect
to the rotary storage drum 50. In this case, the magnetic
25 force of the traveler 73 and the magnet 106 attracts the
traveler 73 towards the yarn supplying section 11.
In the third alternative embodiment, a tapered
portion 62a of the flange 62 is formed longer in the axial
direction of the rotary storage drum 50 than the
30 above-described embodiment, and extends towards the
package forming section 12 side farther than in the case
32 / 64
of the above-described embodiment. Thus, the yarn Y once
hooked to the traveler 73 is less likely to fall off from
the traveler 73. The tapered portion 62a of the flange 62
in the third alternative embodiment is not limited to being
5 long in the axial direction of the rotary storage drum 50
as described above, and may be similar to that in the
above-described embodiment, as illustrated in FIG. 15B
(fourth alternative embodiment).
In another alternative embodiment (fifth alternative
10 embodiment), as illustrated in FIG. 16, a magnet 111
(resistance applying section) is provided at an end on an
inner side in the radial direction of the rotary storage
drum 50 of the traveler 73. In this case, the magnetic force
generated between the magnet 111 provided on the traveler
15 73 and the base material 71 made of a ferromagnetic material
facing the magnet 111 becomes the resistance that inhibits
the movement of the traveler 73 with respect to the rotary
storage drum 50. In the present embodiment, the base
material 71 corresponds to a ferromagnetic portion
20 according to the present invention.
The magnet 111 may be provided at a portion different
from the fifth alternative embodiment that faces any
portion made of a ferromagnetic metal material of the rotary
storage drum 50 of the traveler 73. In this case, the
25 portion facing the magnet 111 of the rotary storage drum
50 corresponds to the ferromagnetic metal portion of the
present invention.
In another alternative embodiment (sixth alternative
embodiment), as illustrated in FIGS. 17A and 17B, the yarn
30 regulating section 63 includes a resistance applying brush
116 (“resistance applying section” in the present
33 / 64
invention) in place of the contact plate 74 and the holding
plate 75. The resistance applying brush 116 extends over
the entire periphery of the outer peripheral surface at the
upper end portion of the outer peripheral surface of the
5 base material 71, and makes contact with the traveler 73.
In this case, when the traveler 73 is moved along the guide
rail 72, the resistance that inhibits the movement with
respect to the rotary storage drum 50 is applied to the
traveler 73 by bringing the traveler 73 into contact with
10 the resistance applying brush 116.
Furthermore, the configuration of applying the
resistance that inhibits the movement with respect to the
rotary storage drum 50 on the traveler 73 such as the contact
plate 74, the rubber magnet plate 101, the magnets 106, 111,
15 and the resistance applying brush 116 may not be provided.
For example, if the sliding resistance between the traveler
73 and the guide rail 72 is large to a certain extent, the
tension to be applied to the yarn Y pulled out towards the
package forming section 12 from the rotary storage drum 50
20 can be increased even if a configuration for applying the
resistance that inhibits the movement with respect to the
rotary storage drum 50 on the traveler 73 is not separately
provided. Since the traveler 73 moves in conjunction with
the rotation of the rotary storage drum 50 during the first
25 yarn hooking operation the yarn hooking operation can be
carried out on the rotary storage drum 50.
The configuration of the guide rail and the traveler
is not limited to that described in the embodiment. In
another alternative embodiment (seventh alternative
30 embodiment), as illustrated in FIGS. 18A and 18B, a guide
rail 121 is arranged in place of the guide rail 72 and a
34 / 64
traveler 122 is arranged in place of the traveler 73 in the
sixth alternative embodiment. The guide rail 121 includes
a bulged portion 121a bulged out towards the radially outer
side of the rotary storage drum 50 from the outer peripheral
5 surface of the base material 71, and a rail portion 121b
extending from the distal end of the bulged portion 121a
to both upper and lower sides. The traveler 122 is attached
to the rail portion 121b such that an opening 122a is on
the inner side in the radial direction of the rotary storage
10 drum 50.
In this case as well, similarly to the
above-described embodiment, the movement of the yarn Y
pulled out from the rotary storage drum 50 towards the
package forming section 12 is regulated by the traveler 122.
15 Thus, the pulled-out yarn Y is held, and the yarn Y wound
around the rotary storage drum 50 is prevented from
slackening.
Furthermore, in this case as well, the yarn Y passed
between the yarn supplying section 11 and the package
20 forming section 12 is introduced to the traveler 122 from
the opening 122a, so that the yarn hooking operation can
be carried out on the traveler 122. In this case, the
traveler 122 functions as the yarn hooking section.
Moreover, when the rotary storage drum 50 is rotated with
25 the yarn hooked to the traveler 122, the yarn can be hooked
to the rotary storage drum 50.
In the seventh alternative embodiment, similarly to
the sixth alterative embodiment, the resistance that
inhibits the movement with respect to the rotary storage
30 drum 50 is applied to the traveler 122 by the resistance
applying brush 116, but also in the seventh alternative
35 / 64
embodiment, the resistance that inhibits the movement with
respect to the rotary storage drum 50 may be applied to the
traveler 122 by the contact plate 74, the rubber magnet
plate 101, and the magnets 106, 111.
5 In the above-described embodiment and the first to
seventh alternative embodiments, the travelers 73, 122 are
substantially C-shaped members having openings 73a, 122a,
and the yarn hooking operation can be carried out on the
travelers 73, 122 by introducing the yarn Y passed between
10 the yarn supplying section 11 and the package forming
section 12 from the openings 73a, 122a. However, the
present invention is not limited thereto. The travelers
73, 122 may be configured such that the yarn Y passed between
the yarn supplying section 11 and the package forming
15 section 12 can be hooked with a configuration different from
the above.
Furthermore, the yarn regulating section is not
limited to one including the traveler and the guide rail
for guiding the traveler. In another alternative
20 embodiment (eighth alternative embodiment), as illustrated
in FIGS. 20A and 20B, a yarn regulating section 130
includes a base material 131 and a flyer 132 (“rod shaped
member” in the present invention). The base material 131
is a substantially circular column shaped member, and is
25 arranged at a central part of the upper surface of the flange
62. The flyer 132 is made of a metal material and the like,
and includes two portions 132a, 132b. The portion 132a is
arranged on an axis C of the rotary storage drum 50, extends
parallel to the axial direction of the rotary storage drum
30 50, and is rotatably supported by the base material 131.
The portion 132b extends to the outer side of the flange
36 / 64
62 in the radial direction of the rotary storage drum 50
from the distal end of the portion 132a.
An annular rubber magnet plate 133 is provided at an
end on an outer side in the radial direction of a surface
5 on the package forming section 12 side in the axial
direction of the flange 62, and the rubber magnet plate 133
faces the portion 132b of the flyer 132. Thus, in the eighth
alternative embodiment, the magnetic force generated
between the flyer 132 made of a ferromagnetic material and
10 the rubber magnet plate 133 becomes a resistance that
inhibits the rotation of the flyer 132 with respect to the
rotary storage drum 50. In the eighth alternative
embodiment, the yarn Y pulled out from the rotary storage
drum 50 towards the package forming section 12 is hooked
15 to the distal end (“yarn hooking section” in the present
invention) of the portion 132b of the flyer 132, and then
hooked to the yarn guide 51 and pulled out towards the
package forming section 12.
In this case, the movement of the yarn Y pulled out
20 from the rotary storage drum 50 towards the package forming
section 12 is regulated by the flyer 132. Thus, the
pulled-out yarn Y is held, and the yarn Y wound around the
rotary storage drum 50 is prevented from slackening.
In this case, in conjunction with the pulled-out yarn
25 Y moving in the peripheral direction of the rotary storage
drum 50 along the outer peripheral surface of the rotary
storage drum 50, the flyer 132 is rotated and the distal
end of the portion 132b is moved in the peripheral direction
of the rotary storage drum 50 along the outer peripheral
30 surface of the rotary storage drum 50. The yarn Y thus can
be smoothly pulled out. In this case, the flyer 132
37 / 64
receives the resistance that inhibits the rotation with
respect to the rotary storage drum 50 by the magnetic force
generated between the flyer 132 and the rubber magnet plate
133, and thus the tension to be applied to the yarn Y to
5 be pulled out can be increased compared to the case where
the rubber magnet plate 133 is not provided.
Furthermore, in this case, the yarn Y passed between
the yarn supplying section 11 and the package forming
section 12 is hooked to the portion 132b of the flyer 132
10 in the first yarn hooking operation. The yarn Y is thereby
hooked to the flyer 132. When the rotary storage drum 50
is rotated under this state, the flyer 132 rotates in
conjunction with the rotation of the rotary storage drum
50, and the yarn Y is wound around the rotary storage drum
15 50. The yarn hooking operation on the rotary storage drum
50 is thereby carried out. In this case, as described above,
the resistance that inhibits the rotation with respect to
the rotary storage drum 50 is applied to the flyer 132 by
the magnetic force generated between the flyer 132 and the
20 rubber magnet plate 133, so that the flyer 132 reliably
rotates in conjunction with the rotation of the rotary
storage drum 50. The yarn hooking operation on the rotary
storage drum 50 thus can be reliably carried out.
In another alternative embodiment (ninth alternative
25 embodiment), as illustrated in FIGS. 21A and 21B, in place
of the rubber magnet plate 133 in the eighth alternative
embodiment, a resistance applying brush 136 (“first
resistance applying brush” in the present invention) that
makes contact with the portion 132b of the flyer 132 is
30 provided on an end face on the package forming section 12
side in the axial direction of the flange 62. In this case,
38 / 64
the force which the rotating flyer 132 receives from the
resistance applying brush 136 becomes the resistance that
inhibits the rotation of the flyer 132 with respect to the
rotary storage drum 50.
5 In another alternative embodiment (tenth alternative
embodiment), as illustrated in FIGS. 22A and 22B, in place
of the rubber magnet plate 133 in the eighth alternative
embodiment, a resistance applying brush 141 (“second
resistance applying brush” in the present invention) that
10 makes contact with the upper surface of the flange 62 is
provided on the portion 132b of the flyer 132. In this case,
the force which the resistance applying brush 141 provided
in the rotating flyer 132 receives from the flange 62
becomes the resistance that inhibits the movement of the
15 flyer 132 with respect to the rotary storage drum 50.
In the eighth to tenth alternative embodiments, for
example, the portion for preventing the hooked yarn Y from
falling off may be provided at the distal end of the portion
132b of the flyer 132, such as the portion where the distal
20 end of the portion 132b of the flyer 132 is bent towards
the yarn supplying section 11 in the axial direction of the
rotary storage drum 50.
In the above examples, the yarn regulating section
includes the traveler that moves in the peripheral
25 direction of the rotary storage drum 50 along the outer
peripheral surface of the rotary storage drum 50 by moving
along the guide rail, or the flyer whose distal end moves
in the peripheral direction of the rotary storage drum 50
along the outer peripheral surface of the rotary storage
30 drum 50 by rotating about the center axis of the rotary
storage drum, but the present invention is not limited
39 / 64
thereto. The yarn regulating section may have a different
configuration of including a yarn hooking section
configured to be movable in the peripheral direction of the
rotary storage drum 50 along the outer peripheral surface
5 of the rotary storage drum 50 and configured to be able to
hook the yarn Y passed between the yarn supplying section
11 and the package forming section 12.
Furthermore, the yarn regulating section is not
limited to including the yarn hooking section configured
10 to be movable in the peripheral direction of the rotary
storage drum 50 along the outer peripheral surface of the
rotary storage drum 50. In another alternative embodiment
(twelfth alternative embodiment), as illustrated in FIGS.
23A and 23B, a yarn regulating section 150 includes a ring
15 member 151. The ring member 151 is a circular ring shaped
member made of CFRP (Carbon Fiber Reinforced Plastic) and
the like. The ring member 151 is spirally wound over a range
slightly shorter than two turns (“range longer than one turn”
in the present invention) in the peripheral direction of
20 the rotary storage drum 150 around an end on the package
forming section 12 side in the axial direction of the
straight portion 61d of the drum body 61. Both ends in the
peripheral direction of the ring member 151 are
respectively bent so as to be curved towards the radially
25 outer side of the rotary storage drum 50. In the twelfth
alternative embodiment, the ring member 151 is prevented
from falling off from the rotary storage drum 150 by the
tapered portion 62a of the flange 62. The yarn Y pulled
out from the rotary storage drum 50 towards the package
30 forming section 12 is passed between the ring member 151
and the rotary storage drum 150, and reaches the yarn guide
40 / 64
51.
In this case, the yarn Y pulled out from the rotary
storage drum 50 towards the package forming section 12 makes
contact with the ring member 151, and the movement of the
5 yarn Y is thereby regulated. The pulled-out yarn Y is
thereby held, and the yarn Y wound around the rotary storage
drum 50 is prevented from slackening.
In this case, the yarn Y passed between the yarn
supplying section 11 and the package forming section 12 in
10 the first yarn hooking operation is inserted to a gap 151a
(“yarn path” in the present invention) between the portions
overlapped with each other in the spirally-wound ring
member 151, from one end of the ring member 151, and the
inserted yarn Y is moved along the peripheral direction of
15 the ring member 151, as indicated by an arrow A in FIGS.
23A and 23B. The yarn Y is then moved in the order of Y1,
Y2, Y3 indicated by a chain double dashed line in FIG. 23A,
and is introduced to the inner side of the ring member 151
(between ring member 151 and rotary storage drum 150). The
20 yarn hooking operation on the ring member 151 is thereby
carried out. When the rotary storage drum 150 is rotated
under this state, the ring member 151 integrally rotates
with the rotary storage drum 150, and the yarn Y is wound
around the rotary storage drum 150 (yarn hooking operation
25 on the rotary storage drum 150 is carried out).
The ring member is not limited to that described in
the eleventh alternative embodiment. For example, the
ring member may be spirally wound across a range longer than
one turn in the peripheral direction of the rotary storage
30 drum 50, as opposed to the eleventh alternative embodiment.
Furthermore, the ring member is not limited to being
41 / 64
spirally wound over the range longer than one turn in the
peripheral direction of the rotary storage drum 50. The
ring member may have a different structure that includes
a yarn passage for introducing the yarn Y passed between
5 the yarn supplying section 11 and the package forming
section 12 from a region on an outer side to a region on
an inner side of the ring member in the radial direction
of the rotary storage drum 50.
In another alternative embodiment (twelfth
10 alternative embodiment), as illustrated in FIG. 24 and FIGS.
25A and 25B, a yarn regulating section 155 includes a yarn
regulating brush 156 in place of the guide rail 72, the
traveler 73, the contact plate 74, and the holding plate
75 (see FIGS. 5A and 5B) in the yarn regulating section 63
15 according to the above-described embodiment. The yarn
regulating brush 156 is provided on the outer peripheral
surface of the base material 71 across the entire periphery.
The yarn Y pulled out from the rotary storage drum 50 towards
the package forming section 12 is passed through a region
20 where the yarn regulating brush 156 is arranged to reach
the yarn guide 51.
In this case, the movement of the yarn Y pulled out
from the rotary storage drum 50 towards the package forming
section 12 is regulated by being caught at bristles of the
25 yarn regulating brush 156. The pulled-out yarn Y is thereby
held, and the yarn Y wound around the rotary storage drum
50 is prevented from slackening.
In this case, the yarn Y passed between the yarn
supplying section 11 and the package forming section 12 is
30 brought closer to the yarn regulating brush 156 during the
yarn hooking operation. The yarn Y thereby gets caught at
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the bristles of the yarn regulating brush 156, and the yarn
Y is hooked to the yarn regulating brush 156. When the
rotary storage drum 50 is rotated under this state, the yarn
regulating brush 156, to which the yarn Y is caught,
5 integrally rotates with the rotary storage drum 50, and the
yarn Y is wound around the rotary storage drum 50 (yarn is
hooked to the rotary storage drum 50).
In the above-described embodiment, while the package
forming operation is stopped, the rotation speed of the
10 winding drum 31 is assumed as Vm1 when the storage amount
of the yarn Y on the rotary storage drum 50 is greater than
or equal to an amount corresponding to the lower limit yarn
sensor 55b, and the rotation speed of the winding drum 31
is assumed as Vm2, which is lower than Vm1, when the storage
15 amount of the yarn Y on the rotary storage drum 50 is smaller
than the amount corresponding to the lower limit yarn sensor
55b and greater than or equal to an amount corresponding
to the lowest limit yarn sensor 55c, but the present
invention is not limited thereto. For example, the storage
20 amount of the yarn Y in the rotary storage drum 50 may be
more finely detected, and the rotation speed of the winding
drum 31 may be gradually lowered as the storage amount of
the yarn in the rotary storage drum 50 becomes smaller.
Alternatively, while the package forming operation is
25 stopped, the winding drum 31 may be rotated at a constant
rotation speed regardless of the storage amount of the yarn
Y in the rotary storage drum 50.
In the above-described embodiment, the rotation
speed of the rotary storage drum 50 is controlled as
30 illustrated in the flowchart of FIG. 11, and the rotation
speed of the winding drum 31 is controlled as illustrated
43 / 64
in the flowchart of FIG. 12, but the present invention is
not limited thereto. One of the control of the rotation
speed of the rotary storage drum 50 or the control of the
rotation speed of the winding drum 31 may be the control
5 different from the above-described embodiment.
Furthermore, in the above-described embodiment, the
yarn Y of the yarn supplying bobbin Bk is unwound and the
unwound yarn Y is wound around the rotary storage drum 50
by rotating the rotary storage drum 50, but the present
10 invention is not limited thereto. For example, a device
for unwinding the yarn Y of the yarn supplying bobbin Bk
may be provided separately from the rotary storage drum 50,
and the rotary storage drum 50 may wind and store the yarn
Y unwound by such a device by rotating.
15 According to the present invention, when the yarn is
pulled out from the rotary drum to the package forming
section, the movement of the pulled-out yarn is regulated
by the yarn regulating section. Thus, the pulled-out yarn
is held, and the slackening of the yarn stored on the drum
20 body can be prevented. Furthermore, according to the
present invention, the yarn regulating section is
configured to be able to hook the yarn passed between the
yarn supplying section and the package forming section.
Thus, the yarn can be hooked to the yarn regulating section
25 after crossing the yarn between the yarn supplying section
and the package forming section, so that the yarn hooking
operation on the yarn regulating section can be easily
carried out. Furthermore, by carrying out the yarn hooking
operation on the yarn regulating section and then rotating
30 the rotary storage drum, the yarn is wound around the rotary
drum and the yarn hooking operation on the rotary storage
44 / 64
drum is carried out. The yarn hooking operation on the
rotary drum thus can be easily carried out.
In the yarn winding device according to the present
invention, the rotary storage drum unwinds and stores the
5 yarn from the yarn supplying bobbin by rotating.
According to the present invention, since the yarn
is unwound from the yarn supplying bobbin and stored by
rotating the rotary storage drum, a structure for unwinding
the yarn from the yarn supplying bobbin apart from the
10 rotary storage drum is not necessary.
In the yarn winding device according to the present
invention, a portion of the yarn regulating section is
located on a yarn path of the yarn passed between the yarn
supplying section and the package forming section, and the
15 yarn is hooked to the yarn regulating section by rotating
the rotary storage drum with the yarn passed between the
yarn supplying section and the package forming section.
According to the present invention, when the rotary
drum is rotated with the yarn passed between the yarn
20 supplying section and the package forming section, the yarn
is automatically hooked to the yarn regulating section.
Therefore, the operator does not need to perform the
operation of manually hooking the yarn to the yarn
regulating section, whereby the yarn hooking operation on
25 the yarn winding device can be simplified.
The yarn winding device according to the present
invention further includes a yarn storage amount detecting
section adapted to detect a storage amount of the yarn
stored on the rotary storage drum; and a first control
30 section adapted to control the device, wherein the first
control section causes the package forming section to
45 / 64
continue a package forming operation of pulling out and
winding the yarn from the yarn storage section and causes
the package forming section to reduce a pull-out speed of
the yarn from the yarn storage section during the package
5 forming operation as the storage amount of the yarn detected
by the yarn storage amount detecting section becomes
smaller when causing the yarn joining device to carry out
a yarn joining operation.
According to the present invention, when pulling out
10 the yarn from the yarn storage section to form the package
during the yarn joining operation, since the pull-out speed
of the yarn from the yarn storage section to the package
forming section is reduced as the remaining amount of the
yarn stored in the yarn storage section becomes smaller,
15 a time during which the package forming operation can be
continued with the unwinding of the yarn from the yarn
supplying package stopped can be increased. Thus, the time
that can be used for the yarn joining operation can be
increased without increasing the amount of yarn to be stored
20 in the yarn storage section.
In the yarn winding device according to the present
invention, the yarn regulating section includes a yarn
hooking section configured to be movable in a peripheral
direction of the rotary storage drum along an outer
25 peripheral surface of the rotary storage drum, and
configured to hook the yarn passed between the yarn
supplying section and the package forming section.
According to the present invention, when the yarn is
pulled out from the rotary storage drum to the package
30 forming section, the movement of the pulled-out yarn is
regulated by the yarn hooking section. Thus, the
46 / 64
pulled-out yarn is held, and the yarn wound around the
rotary storage drum can be prevented from slackening. When
the yarn is pulled out from the rotary storage drum to the
package forming section, the yarn hooking section moves in
5 the peripheral direction of the rotary storage drum along
the outer peripheral surface of the rotary storage drum
together with the pulled-out yarn, and thus can smoothly
pull out the yarn. Moreover, according to the present
invention, the yarn hooking operation can be carried out
10 on the rotary drum by rotating the rotary drum with the yarn
passed between the yarn supplying section and the package
forming section hooked to the yarn hooking section.
In the yarn winding device according to the present
invention, the yarn regulating section includes an annular
15 guide rail that surrounds the outer peripheral surface of
the rotary storage drum in the peripheral direction, and
a traveler serving as the yarn hooking section configured
to be movable along the guide rail and configured to hook
the yarn passed between the yarn supplying section and the
20 package forming section.
According to the present invention, when the yarn is
pulled out from the rotary storage drum to the package
forming section, the movement of the pulled-out yarn is
regulated by the traveler. Thus, the pulled-out yarn is
25 held, and the yarn wound around the rotary storage drum can
be prevented from slackening. When the yarn is pulled out
from the rotary storage drum to the package forming section,
the traveler moves in the peripheral direction of the rotary
storage drum along the outer peripheral surface of the
30 rotary storage drum together with the pulled-out yarn, and
thus can smoothly pull out the yarn. Moreover, according
47 / 64
to the present invention, the yarn hooking operation can
be carried out on the rotary drum by rotating the rotary
drum with the yarn passed between the yarn supplying section
and the package forming section hooked to the traveler.
5 In the yarn winding device according to the present
invention, the traveler includes an opening through which
the yarn passed between the yarn supplying section and the
package forming section is introduced, and the yarn hooking
operation is carried out by introducing the yarn from the
10 opening.
According to the present invention, the yarn passed
between the yarn supplying section and the package forming
section can be hooked to the traveler by simply introducing
the yarn to the traveler from the opening.
15 In the yarn winding device according to the present
invention, the yarn regulating section further includes a
resistance applying section adapted to apply a resistance
that inhibits the movement with respect to the rotary
storage drum on the traveler.
20 According to the present invention, when the traveler
moves along the outer peripheral surface of the rotary
storage drum in conjunction with the yarn being pulled out
from the rotary storage drum to the package forming section,
the resistance that inhibits the movement with respect to
25 the rotary storage drum is applied to the traveler so that
the tension to be applied to the yarn to be pulled out can
be increased. If the resistance that inhibits the movement
of the traveler with respect to the rotary drum is too small,
the traveler does not move and the yarn may not be hooked
30 to the rotary storage drum even if the rotary storage drum
is rotated with the yarn hooked to the traveler. In the
48 / 64
present invention, the resistance that inhibits the
movement with respect to the rotary storage drum is applied
to the traveler by the resistance applying section.
Therefore, when the rotary storage drum is rotated with the
5 yarn hooked to the traveler, the traveler reliably moves
in conjunction with the rotation of the rotary storage drum.
The yarn thus can be reliably hooked to the rotary storage
drum.
In the yarn winding device according to the present
10 invention, the resistance applying section includes a
contact plate which is provided on the package forming
section side of the traveler in the axial direction of the
rotary storage drum and adapted to make contact with the
traveler.
15 According to the present invention, the resistance
that inhibits the movement with respect to the rotary
storage drum can be applied to the traveler by bringing the
contact plate provided on the rotary storage drum into
contact with a movement guide.
20 In the yarn winding device according to the present
invention, the traveler is made of a metal material, and
the resistance applying section includes a magnet provided
on the rotary storage drum.
According to the present invention, the resistance
25 that inhibits the movement with respect to the rotary
storage drum can be applied to the traveler by a magnetic
force generated between the traveler made of a
ferromagnetic material and a magnet provided on the rotary
storage drum.
30 In the yarn winding device according to the present
invention, the magnet is provided on the guide rail.
49 / 64
According to the present invention, the resistance
that inhibits the movement with respect to the rotary
storage drum can be applied to the traveler by a magnetic
force between the traveler made of a ferromagnetic material
5 and a magnet provided on the guide rail.
In the yarn winding device according to the present
invention, the rotary storage drum includes a base material
that is made of a metal material and that faces the traveler,
and the resistance applying section includes a magnet
10 provided on the traveler.
According to the present invention, the resistance
that inhibits the movement with respect to the rotary
storage drum can be applied to the traveler by a magnetic
force between the magnet provided on the traveler and a
15 ferromagnetic portion of the rotary storage drum.
In the yarn winding device according to the present
invention, the resistance applying section includes a
resistance applying brush which is provided on the rotary
storage drum and adapted to make contact with the traveler.
20 According to the present invention, the resistance
that inhibits the movement with respect to the rotary
storage drum can be applied to the traveler by providing
the resistance applying brush that makes contact with the
traveler on the rotary storage drum.
25 In the yarn winding device according to the present
invention, the yarn regulating section includes a
rod-shaped member provided on an end face on the package
forming section side in the axial direction of the rotary
storage drum, rotatably supported by a central shaft of the
30 rotary storage drum, and extending in a radial direction
50 / 64
of the rotary storage drum, a distal end of the rod-shaped
member being the yarn hooking section.
According to the present invention, when the yarn is
pulled out from the rotary storage drum to the package
5 forming section, the movement of the pulled-out yarn is
regulated by the rod-shaped member. Thus, the pulled-out
yarn is held, and the yarn wound around the rotary storage
drum can be prevented from slackening. When the yarn is
pulled out from the rotary storage drum to the package
10 forming section, the rod-shaped member rotates together
with the pulled-out yarn and thus can smoothly pull out the
yarn. Moreover, the yarn hooking operation can be carried
out on the rotary drum by rotating the rotary drum with the
yarn passed between the yarn supplying section and the
15 package forming section hooked to the yarn hooking section
of the rod-shaped member.
In the yarn winding device according to the present
invention, the yarn regulating section further includes a
resistance applying section adapted to apply a resistance
20 that inhibits the rotation with respect to the rotary
storage drum on the rod-shaped member.
According to the present invention, when the
rod-shaped member is rotated in conjunction with the yarn
being pulled out from the rotary storage drum to the package
25 forming section, the rod-shaped member receives the
resistance that inhibits the rotation with respect to the
rotary storage drum so that the tension to be applied to
the yarn to be pulled-out can be increased. If the
resistance that inhibits the rotation with respect to the
30 rotation drum received by the rod-shaped member is too small,
the rod-shaped member does not rotate even if the rotary
51 / 64
storage drum is rotated with the yarn hooked to the
rod-shaped member, and the yarn hooking operation may not
be carried out on the rotary storage drum. In the present
invention, the resistance that inhibits the movement with
5 respect to the rotary storage drum is applied to the
rod-shaped member by the resistance applying section.
Therefore, when the rotary storage drum is rotated with the
yarn hooked to the rod-shaped member, the rod-shaped member
reliably rotates in conjunction with the rotation of the
10 rotary storage drum. The yarn hooking operation thus can
be reliably carried out on the rotary storage drum.
In the yarn winding device of the present invention,
the rod-shaped member is made of a ferromagnetic material,
and the resistance applying section includes a magnet
15 provided on an end face of the package forming section side
in the axial direction of the rotary storage drum.
According to the present invention, the resistance
that inhibits the rotation with respect to the rotary
storage drum can be applied to the rod-shaped member by a
20 magnetic force generated between the rod-shaped member made
of a ferromagnetic material and a magnet provided on the
rotary storage drum.
In the yarn winding device according to the present
invention, the resistance applying section includes a first
25 resistance applying brush which is provided on an end face
of the package forming section side in the axial direction
of the rotary storage drum and adapted to make contact with
a portion extending in a radial direction of the rotary
storage drum of the rod-shaped member.
30 According to the present invention, the resistance
that inhibits the rotation with respect to the rotary
52 / 64
storage drum can be applied to the rod-shaped member by
providing the first resistance applying brush that makes
contact with the portion extending in the radial direction
of the rotary storage drum of the rod-shaped member on the
5 end face in the axial direction of the rotary storage drum.
In the yarn winding device according to the present
invention, the resistance applying section includes a
second resistance applying brush which is provided at a
portion extending in a radial direction of the rotary
10 storage drum of the rod-shaped member and adapted to make
contact with an end face on the package forming section side
in the axial direction of the rotary storage drum.
According to the present invention, the resistance
that inhibits the rotation with respect to the rotary
15 storage drum can be applied to the rod-shaped member by
providing the second resistance applying brush that makes
contact with the end face in the axial direction of the
rotary storage drum at the portion extending in the radial
direction of the rotary storage drum of the rod-shaped
20 member.
In the yarn winding device according to the present
invention, the yarn regulating section includes a yarn
regulating brush which is provided on the rotary storage
drum and adapted to make contact with a yarn pulled out from
25 the rotary storage drum towards the package forming
section.
According to the present invention, the movement of
the yarn pulled out from the rotary storage drum is
regulated by being caught at bristles of the yarn regulating
30 brush. Thus, the pulled-out yarn is held, and the yarn
wound around the rotary storage drum can be prevented from
53 / 64
slackening. Furthermore, the yarn can be hooked to the yarn
regulating brush by bringing the yarn passed between the
yarn supplying section and the package forming section into
contact with the yarn regulating brush and hooking the yarn
5 to the bristles of the yarn regulating brush, and the yarn
can be hooked to the rotary storage drum by rotating the
rotary storage drum under this state.
In the yarn winding device according to the present
invention, the yarn regulating section includes a ring
10 member wound around an outer peripheral surface of the
rotary storage drum, and the ring member includes a yarn
passage through which the yarn passed between the yarn
supplying section and the package forming section is
introduced from a region on an outer side to a region on
15 an inner side of the ring member in the radial direction
of the rotary storage drum.
According to the present invention, the movement of
the yarn pulled out from the rotary storage drum is
regulated by being brought into contact with the ring member.
20 Thus, the pulled-out yarn is held, and the yarn wound around
the rotary storage drum can be prevented from slackening.
Furthermore, the yarn can be hooked to the winding member
by introducing, through the yarn passage, the yarn passed
between the yarn supplying section and the package forming
25 section from the region on the outer side to the region on
the inner side in the radial direction of the winding member
of the rotary drum, and the yarn can be hooked to the rotary
storage drum by rotating the rotary storage drum under this
state.
30 In the yarn winding device according to the present
invention, the ring member is spirally wound around the
54 / 64
outer peripheral surface of the rotary storage drum in a
range longer than one turn in the peripheral direction, and
a gap formed between portions overlapping each other in the
ring member is the yarn passage.
5 According to the present invention, the ring member
is spirally wound in a range longer than one turn in the
peripheral direction of the rotary storage drum, so that
the gap to become the yarn passage can be formed between
the portions overlapping each other in the spirally-wound
10 ring member.
An automatic winder according to the present
invention is an automatic winder in which a plurality of
the yarn winding devices according to the present invention
are arranged, the automatic winder further including a yarn
15 hooking device adapted to hook the yarn of the yarn
supplying bobbin supported by the bobbin supporting section
of the plurality of yarn winding devices to the package
forming section; and a second control section adapted to
control operations of the yarn winding device and the yarn
20 hooking device; wherein the second control section causes
the yarn hooking device to hook the yarn passed between the
yarn supplying section and the package forming section of
the plurality of yarn winding devices to the package forming
section, and to hook the yarn passed between the yarn
25 supplying section and the package forming section to the
rotary storage drum by rotating the rotary storage drum with
the yarn hooked to the yarn regulating section.
According to the present invention, the yarn can be
automatically hooked to the package forming section and the
30 rotary storage drum in the plurality of yarn winding devices
of the automatic winder.
55 / 64
According to the present invention, the yarn can be
hooked to the yarn regulating section after the yarn is
passed between the yarn supplying section and the package
forming section, so that the yarn can be easily hooked to
5 the yarn regulating section. Furthermore, by carrying out
the yarn hooking operation on the yarn regulating section
and then rotating the rotary storage drum, the yarn is wound
around the rotary drum and the yarn hooking operation on
the rotary storage drum is carried out. The yarn hooking
10 operation on the rotary drum thus can be easily carried out.
56 / 64
WE CLAIM:
1. A yarn winding device comprising:
a yarn supplying section including a bobbin
5 supporting section adapted to support a yarn supplying
bobbin around which a yarn is wound;
a yarn storage section adapted to store the yarn from
the yarn supplying bobbin;
a package forming section adapted to pull out the yarn
10 stored in the yarn storage section and wind the yarn to form
a package;
a yarn defect detection device adapted to detect a
yarn defect in the yarn spun by the ring spinning machine
and cut the yarn to remove the yarn defect when the yarn
15 defect is detected; and
a yarn joining device provided between the yarn
supplying section and the yarn storage section and adapted
to join the yarn from the yarn supplying section and the
yarn from the yarn storage section when the yarn is cut by
20 the yarn defect detection device or when the yarn of the
yarn supplying bobbin runs out and a new yarn supplying
bobbin is supplied to the yarn supplying section,
wherein the yarn storage section includes a rotary
storage drum adapted to wind and store the yarn from the
25 yarn supplying bobbin by rotating,
the rotary storage drum includes
a drum body adapted to store the yarn by winding the
yarn, characterized by
a yarn regulating section provided at an end on the
30 package forming section side in an axial direction of the
drum body and adapted to regulate movement of the pulled-out
57 / 64
yarn when the yarn is pulled out from the drum body towards
the package forming section, and
the yarn regulating section is configured to hook the
yarn passed between the yarn supplying section and the
5 package forming section and to wind the yarn around the
rotary storage drum when the rotary storage drum is rotated
in the yarn hooked state.
2. The yarn winding device according to claim 1,
10 characterized in that the rotary storage drum unwinds the
yarn from the yarn supplying bobbin and stores the yarn by
rotating.
3. The yarn winding device according to claim 1 or
15 2, characterized in that
a portion of the yarn regulating section is located
on a yarn path of the yarn passed between the yarn supplying
section and the package forming section, and
the yarn is hooked to the yarn regulating section by
20 rotating the rotary storage drum with the yarn passed
between the yarn supplying section and the package forming
section.
4. The yarn winding device according to any one of
25 claims 1 to 3, characterized by further comprising:
a yarn storage amount detecting section adapted to
detect a storage amount of the yarn stored on the rotary
storage drum; and
a first control section adapted to control the
30 device,
wherein the first control section causes the package
58 / 64
forming section to continue a package forming operation of
pulling out and winding the yarn from the yarn storage
section and causes the package forming section to reduce
a pull-out speed of the yarn from the yarn storage section
5 during the package forming operation as the storage amount
of the yarn detected by the yarn storage amount detecting
section becomes smaller when causing the yarn joining
device to carry out a yarn joining operation.
10 5. The yarn winding device according to any one of
claims 1 to 4, characterized in that the yarn regulating
section includes a yarn hooking section configured to be
movable in a peripheral direction of the rotary storage drum
along an outer peripheral surface of the rotary storage
15 drum , and configured to hook the yarn passed between the
yarn supplying section and the package forming section.
6. The yarn winding device according to claim 5,
characterized in that the yarn regulating section includes
20 an annular guide rail that surrounds the outer
peripheral surface of the rotary storage drum in the
peripheral direction, and
a traveler serving as the yarn hooking section
configured to be movable along the guide rail and configured
25 to hook the yarn passed between the yarn supplying section
and the package forming section.
7. The yarn winding device according to claim 6,
characterized in that the traveler includes
30 an opening through which the yarn passed between the
yarn supplying section and the package forming section is
59 / 64
introduced, and
the yarn hooking operation is carried out by
introducing the yarn from the opening.
5 8. The yarn winding device according to claim 6 or
7, characterized in that the yarn regulating section
further includes a resistance applying section adapted to
apply a resistance that inhibits the movement with respect
to the rotary storage drum on the traveler.
10
9. The yarn winding device according to claim 8,
characterized in that the resistance applying section
includes a contact plate which is provided on the package
forming section side of the traveler in the axial direction
15 of the rotary storage drum and adapted to make contact with
the traveler.
10. The yarn winding device according to claim 8,
characterized in that the traveler is made of a metal
20 material, and the resistance applying section includes a
magnet provided on the rotary storage drum.
11. The yarn winding device according to claim 10,
characterized in that the magnet is provided on the guide
25 rail.
12. The yarn winding device according to claim 8,
characterized in that the rotary storage drum includes a
base material that is made of a ferromagnetic material and
30 that faces the traveler, and
the resistance applying section includes a magnet
60 / 64
provided on the traveler.
13. The yarn winding device according to claim 8,
characterized in that the resistance applying section
5 includes a resistance applying brush which is provided on
the rotary storage drum and adapted to make contact with
the traveler.
14. The yarn winding device according to claim 5,
10 characterized in that
the yarn regulating section includes a rod-shaped
member provided on an end face on the package forming
section side in the axial direction of the rotary storage
drum, rotatably supported by a central shaft of the rotary
15 storage drum , and extending in a radial direction of the
rotary storage drum , a distal end of the rod-shaped member
being the yarn hooking section.
15. The yarn winding device according to claim 14,
20 characterized in that the yarn regulating section further
includes a resistance applying section adapted to apply a
resistance that inhibits the rotation with respect to the
rotary storage drum on the rod-shaped member.
25 16. The yarn winding device according to claim 15,
characterized in that
the rod-shaped member is made of a ferromagnetic
material, and the resistance applying section includes a
magnet provided on an end face on the package forming
30 section side in the axial direction of the rotary storage
drum.
61 / 64
17. The yarn winding device according to claim 15,
characterized in that the resistance applying section
includes a first resistance applying brush which is
5 provided on an end face on the package forming section side
in the axial direction of the rotary storage drum and
adapted to make contact with a portion extending in a radial
direction of the rotary storage drum of the rod-shaped
member.
10
18. The yarn winding device according to claim 15,
characterized in that the resistance applying section
includes a second resistance applying brush which is
provided at a portion extending in a radial direction of
15 the rotary storage drum of the rod-shaped member and adapted
to make contact with an end face on the package forming
section side in the axial direction of the rotary storage
drum.
20 19. The yarn winding device according to any one of
claims 1 to 4, characterized in that the yarn regulating
section includes a yarn regulating brush which is provided
on the rotary storage drum and adapted to make contact with
a yarn pulled out from the rotary storage drum towards the
25 package forming section.
20. The yarn winding device according to any one of
claims 1 to 4, characterized in that the yarn regulating
section includes a ring member wound around an outer
30 peripheral surface of the rotary storage drum , and
the ring member includes a yarn passage through which
62 / 64
the yarn passed between the yarn supplying section and the
package forming section is introduced from a region on an
outer side to a region on an inner side of the ring member
in the radial direction of the rotary storage drum.
5
21. The yarn winding device according to claim 20,
characterized in that the ring member is spirally wound
around the outer peripheral surface of the rotary storage
drum in a range longer than one turn in the peripheral
10 direction, and
a gap formed between portions overlapping each other
in the ring member is the yarn passage.
22. An automatic winder in which a plurality of the
15 yarn winding devices according to any one of claims 1 to
21 are arranged, the automatic winder characterized by
further comprising:
a yarn hooking device adapted to hook the yarn of the
yarn supplying bobbin supported by the bobbin supporting
20 section of the plurality of yarn winding devices to the
package forming section ; and
a second control section adapted to control
operations of the yarn winding device and the yarn hooking
device ,
25 wherein the second control section causes the yarn
hooking device
to hook the yarn passed between the yarn supplying
section and the package forming section of the plurality
of yarn winding devices to the package forming section ,
30 and
to hook the yarn passed between the yarn supplying
63 / 64
section and the package forming section to the rotary
storage drum by rotating the rotary storage drum with the
yarn hooked to the yarn regulating section.