TWISTING NOZZLE, YARN JOINING NOZZLE STRUCTURE, YARN
JOINING DEVICE, WINDING UNIT, AND TEXTILE MACHINE
BACKGROUND OF THE INVENTION
5 1. Field of the Invention
The present invention relates to a twisting nozzle,
a yarn joining nozzle structure, a yarn joining device, a
winding unit, and a textile machine.
10 2. Description of the Related Art
As a conventional yarn joining nozzle structure, for
example, there is known a yarn joining nozzle structure
including a twisting nozzle provided with a yarn joining
chamber, where a yarn joining operation is carried out by
15 an action of a compressed air, and a twisting nozzle
supporting body provided with an accommodation section for
accommodating the twisting nozzle, as described in Japanese
Unexamined Patent Publication No. 59-228029 and Japanese
Unexamined Patent Publication No. 2010-30707.
20 In the yarn joining nozzle structure described above,
an attachment of the twisting nozzle to the twisting nozzle
supporting body is normally realized by adhesion using an
adhesive. However, when the twisting nozzle is attached
to the twisting nozzle supporting body by adhesion, the
25 operation, trouble, and quality associated with the
attachment may vary. Furthermore, in such a case,
replacement may be difficult at the time of maintenance or
breakage of the twisting nozzle, for example.
30 BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide
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a twisting nozzle, a yarn joining nozzle structure, a yarn
joining device, a winding unit, and a textile machine in
which attachment of the twisting nozzle to a twisting nozzle
supporting body can be realized by non-adhesion.
5 A yarn joining nozzle structure of the present
invention includes a twisting nozzle provided with a yarn
joining chamber where yarn joining operation is carried out
by an action of a compressed air; and a twisting nozzle
supporting body provided with an accommodation section
10 adapted to accommodate the twisting nozzle; the yarn
joining nozzle further including an air flow path provided
to communicate the twisting nozzle supporting body with the
twisting nozzle, and adapted to supply the compressed air
from the twisting nozzle supporting body to the yarn joining
15 chamber of the twisting nozzle, wherein the twisting nozzle
is attached to the twisting nozzle supporting body by way
of at least one removable elastic member that surrounds the
air flow path. The flow path can be surrounded by one or
a plurality of elastic members. If a plurality of members
20 is used, then each will surround part of the flow path. The
at least one removable elastic member is arranged between
the twisting nozzle and the twisting nozzle supporting body.
The elastic member is removable and can be handled as a unit
separate from the twisting nozzle and the twisting nozzle
25 supporting body.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of a winding unit according
to one embodiment of the present invention;
30 FIG. 2 is a front view of a yarn joining device
according to one embodiment of the present invention;
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FIG. 3 is a plan view of the yarn joining device of
FIG. 2;
FIG. 4 is a plan view of the yarn joining device of
FIG. 2;
5 FIG. 5 is a side view of the yarn joining device of
FIG. 2;
FIG. 6 is a perspective view of a yarn joining nozzle
structure in the yarn joining device of FIG. 2;
FIG. 7 is an exploded perspective view of the yarn
10. joining nozzle structure of FIG. 8;
FIG. 8 is a cross-sectional view taken along line
VIII-VIII of FIG. 7; and
FIG. 9 is a cross-sectional view taken along line
IX-IX of FIG. 6.
15
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Preferred embodiments of the present invention will
be hereinafter described in detail with reference to the
drawings. In the drawings, the same reference numerals are
20 denoted for the same or corresponding portions, and
redundant description will be omitted.
[Configuration of winding unit]
As illustrated in FIG. 1, a winding unit 1 is adapted
to wind a yarn Y into a package P from a yarn supplying bobbin
25 B. The yarn supplying bobbin B is formed by a spinning
machine in a previous step, and is transported from the
spinning machine in a state of being set on a tray, for
example. A plurality of the winding units 1 are arranged
in line to form an automatic winder serving as a textile
30 machine.
The winding unit 1 includes a bobbin supporting
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section (yarn supplying section) 2, a yarn unwinding
assisting device 3, a pre-clearer 4, a tension applying
device 5, a tension sensor 6, a lower-yarn catching device
7, a yarn joining device 10, a cutter 9, a yarn monitoring
5 device 11, an upper-yarn catching device 12, and a winding
device (winding section) 13 arranged in this order from
upstream (lower side in this case) along a travelling path
of the yarn Y. Each of the components is mounted to a
machine base 8.
10 The bobbin supporting section 2 is adapted to support
the yarn supplying bobbin B in an upright state and to supply
the yarn Y. The yarn unwinding assisting device 3 is
adapted to control a balloon of the yarn Y unwound from the
yarn supplying bobbin B with a tubular member arranged above
15 the yarn supplying bobbin B. The tension applying device
5 is a gate-type tenser adapted to apply a predetermined
tension on the travelling yarn Y by holding the yarn Y in
a zig-zag manner with a pair of gates formed of a comb-teeth
fixed gate and a comb-teeth movable gate. The tension
20 sensor 6 is adapted to measure the tension of the yarn Y
applied by the tension applying device 5.
The pre-clearer 4 is adapted to pre-regulate the
passing of a yarn defect such as an entangled yarn, which
is greater than a defined value, with a pair of regulating
25 members arranged at a predetermined spacing with the
travelling path of the yarn Y therebetween. The yarn
monitoring device 11 is adapted to detect a yarn defect such
as slub during the winding of the yarn Y. The cutter 9 is
adapted to cut the yarn Y when the yarn defect is detected
30 by the yarn monitoring device 11. The yarn joining device
10 is adapted to join a yarn end of the yarn Y from the package
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P and a yarn end of the yarn Y from the yarn supplying bobbin
B after cutting of the yarn Y by the cutter 9, or after yarn
breakage of the yarn Y.
The lower-yarn catching device 7 is mounted to the
5 machine base 8 in a swingable manner with an axis line a
as a center. A suction mouth 7a is provided at a swinging
end of the lower-yarn catching device 7 . The suction mouth
7a is swung between an upper part of the yarn joining device
10 and a lower part of the pre-clearer 4. At the time of
10 cutting of the yarn Y by the cutter 9 or the yarn breakage
of the yarn Y, the lower-yarn catching device 7 swings the
suction mouth 7a toward the lower part of the pre-clearer
4 to suck the yarn end of the yarn Y from the yarn supplying
bobbin B with the suction mouth 7a, and then swings the
15 suction mouth 7a toward the upper part of the yarn joining
device 10 to deliver the yarn Y from the yarn supplying
bobbin B to the yarn joining device 10.
The upper-yarn catching device 12 is mounted to the
machine base 8 in a swingable manner with an axis line (3
20 as a center. A suction mouth 12a is provided at a swinging
end of the upper-yarn catching device 12 . The suction mouth
12a is swung between a lower part of the yarn joining device
10 and the winding device 13. At the time of cutting of
the yarn Y by the cutter 9 or the yarn breakage of the yarn
25 Y, the upper-yarn catching device 12 swings the suction
mouth 12a toward the winding device 13 to suck a yarn end
of the yarn Y from the package P with the suction mouth 12a,
and then swings the suction mouth 12a toward the lower part
of the yarn joining device 10 to deliver the yarn Y from
30 the package P to the yarn joining device 10.
The winding device 13 is adapted to wind the yarn Y
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unwound from the yarn supplying bobbin B into the package
P to form a fully-wound package P. The winding device 13
includes a winding drum 14 provided with a drum groove 14a,
and a cradle 15 adapted to rotatably support the package
5 P. The cradle 15 causes a surface of the package P to make
contact with a surface of the winding drum 14 under an
appropriate contact pressure. By rotating the package P
together with the winding drum 14 being rotationally driven
with a motor, the winding device 13 winds the yarn Y into
10 the package P while traversing the yarn Y in a predetermined
width.
A control section 16, an input section 17, and a
display section 18 are provided in the machine base 8. The
control section 16 is adapted to control each component of
15 the winding unit 1. The input section 17 is an operation
button and the like, for example, and is used when an
operator sets various values with respect to the control
section 16, and the like. The display section 18 is adapted
to display an operational status or the like of the winding
20 unit 1. The control section 16 transmits/receives various
types of information associated with a winding operation
to/from an upper control section provided in the automatic
winder. The upper control section is adapted to control
the entire automatic winder by controlling the control
25 section 16 of each winding unit 1.
[Configuration of yarn joining device]
Next, a description will be made on a configuration
of the yarn joining device 10 . In the following description,
a side of the package P indicates an upper side (above),
30 a side of the yarn supplying bobbin B indicates a lower side
(below), a side of the travelling path of the yarn Y with
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respect to the yarn joining device 10 indicates a front side
(front) , and an opposite side indicates a back side (back)
for the sake of convenience. Furthermore, the yarn Y from
the package P is referred to as an upper yarn YA, and the
5 yarn Y from the yarn supplying bobbin B is referred to as
a lower yarn YB. Moreover, a direction perpendicular to
a top-bottom direction and a front-back direction is
referred to as a left-right direction.
As illustrated in FIG. 2, the yarn joining device 10
10 includes a first untwisting section 40A and a second
untwisting section 40B, a yarn joining section 50, a pair
of yarn drawing levers 81, and a pair of twist stopping
levers 82. The pair of yarn drawing levers 81 swings to
sandwich the first untwisting section 40A and the second
15 untwisting section 40B so that the untwisting sections lie
in between the yarn drawing levers 81. The pair of twist
stopping levers 82 swings to sandwich the yarn joining
section 50 so that it lies in between the stopping levers
82. The yarn joining device 10 is mounted to the machine
20 base 8 by way of a frame body (device main body section)
20 adapted to support each component of the yarn joining
device 10.
A first guide plate 21 is arranged on the upper side
of the first untwisting section 40A and the second
25 untwisting section 40B. A second guide plate 22 is arranged
on the lower side of the first untwisting section 40A and
the second untwisting section 40B. The first guide plate
21 and the second guide plate 22 are horizontal and opposite
to each other in the vertical direction with the yarn
30 joining section 50 therebetween. The first guide plate 21
is provided with a guide groove 21a and a guide groove 21b.
8 / 32
The second guide plate 22 is provided with a guide groove
22a and a guide groove 22b. The guide groove 21a of the
first guide plate 21 vertically faces the guide groove 22a
of the second guide plate 22. The guide groove 21b of the
5 first guide plate 21 vertically faces the guide groove 22b
of the second guide plate 22.
The upper yarn YA guided by the upper-yarn catching
device 12 and drawn by the yarn drawing levers 81 is
introduced to the guide groove 21a and the guide groove 22a
10 vertically facing each other. The lower yarn YB guided by
the lower-yarn catching device 7 and drawn by the yarn
drawing levers 81 is introduced to the guide groove 21b and
the guide groove 22b vertically facing each other.
A first yarn holding section 60A is provided on the
15 upper side of the first guide plate 21, and a first yarn
cutting section 70A is provided on the lower side of the
first guide plate 21. A second yarn holding section 60B
is provided on the lower side of the second guide plate 22,
and a second yarn cutting section 70B is provided on the
20 upper side of the second guide plate 22. The first yarn
holding section 60A holds the upper yarn YA introduced to
the guide groove 21a. The second yarn cutting section 70B
cuts the upper yarn YA introduced to the guide groove 22a,
with the upper yarn YA being held by the first yarn holding
25 section 60A. The second yarn holding section 60B holds the
lower yarn YB introduced to the guide groove 22b. The first
yarn cutting section 70A cuts the lower yarn YB introduced
to the guide groove 21b, with the lower yarn YB being held
by the second yarn holding section 60B.
30 The first untwisting section 40A introduces thereto
and untwists the yarn end of the upper yarn YA cut by the
9 / 32
second yarn cutting section 70B, with the upper yarn YA
being held by the first yarn holding section 60A. The
second untwisting section 40B introduces thereto and
untwists the yarn end of the lower yarn YB cut by the first
5 yarn cutting section 70A, with the lower yarn YB being held
by the second yarn holding section 60B.
The yarn joining section 50 joins a yarn end of the
upper yarn YA and a yarn end of the lower yarn YB by twisting
the yarn end of the upper yarn YA untwisted by the first
10 untwisting section 40A and the yarn end of the lower yarn
YB untwisted by the second untwisting section 40B. When
the yarn ends are twisted in the yarn joining section 50,
the upper yarn YA is held by the first yarn holding section
60A, and the lower yarn YB is held by the second yarn holding
15 section 60B. The yarn end of the upper yarn YA is pulled
out from the first untwisting section 40A and the yarn end
of the lower yarn YB is pulled out from the second untwisting
section 40B by the yarn drawing levers 81, and the tip-end
portion of the yarn end of the upper yarn YA and the tip-end
20 portion of the yarn end of the lower yarn YB are held in
proximity to the yarn joining section 50 by the twist
stopping levers 82.
As illustrated in FIG. 3, a driving motor 23 is
attached to the frame body 20 as a drive source of the pair
25 of yarn drawing levers 81 and the pair of twist stopping
levers 82. The driving motor 23 is, for example, a stepping
motor. An arm 25 is fixed to a drive shaft 24 of the driving
motor 23. A back-end portion of a coupling member 26 is
rotatably coupled to the arm 25. A base-end portion of the
30 yarn drawing lever 81 is rotatably coupled to a front-end
portion of the coupling member 26. The yarn drawing levers
10 / 32
81 are rotatably supported by a support shaft 27 fixed to
the frame body 20.
The twist stopping levers 82 are rotatably supported
by the support shaft 27. The twist stopping levers 82 are
5 urged toward the first untwisting section 40A and the second
untwisting section 40B by a torsion coil spring 28 rotatably
attached to the support shaft 27. Accordingly, the twist
stopping levers 82 are swung toward the first untwisting
section 40A and the second untwisting section 40B together
10 with the yarn drawing levers 81. However, after a tip-end
portion of a stopper bolt 29 screw-fitted to the base-end
portion of the twist stopping lever 82 makes contact with
a part of the frame body 20, only the yarn drawing levers
81 are swung toward the first untwisting section 40A and
15 the second untwisting section 40B.
The arm 25 is provided with a magnet 96a and a pair
of magnets 96b. The pair of magnets 96b are arranged to
be adjacent to the magnet 96a with the magnet 96a
therebetween, and have a polarity opposite to the magnet
20 96a. A magnetic sensor 97 adapted to detect the polarity
of the magnet 96a is mounted to the frame body 20. The
magnetic sensor 97 is arranged to face the magnet 96a under
a state where the pair of yarn drawing levers 81 and the
pair of twist stopping levers 82 are at initial positions
25 (standby positions). Thus, the operation of the driving
motor 23 is controlled with the state where the pair of yarn
drawing levers 81 and the pair of twist stopping levers 82
are at the initial positions as a reference.
A driving motor 31 is attached to the frame body 20
30 as a drive source of a first yarn processing section 100A
and a second yarn processing section 100B. The driving
11 / 32
motor 31 is, for example, a stepping motor. The first yarn
processing section 100A includes the first yarn holding
section 60A and the first yarn cutting section 70A, as well
as a first transmitting mechanism 90A. The second yarn
5 processing section 100B includes the second yarn holding
section 60B and the second yarn cutting section 70B, as well
as a second transmitting mechanism 90B. The first yarn
processing section 100A and the second yarn processing
section 100B are provided on both sides of the yarn joining
10 section 50. That is, the yarn joining section 50 is
arranged between the first yarn processing section 100A and
the second yarn processing section 100B.
As illustrated in FIG. 5, the driving motor 31
includes a drive shaft 32, a rotor 33, a stator 34, and a
15 housing 35. The rotor 33 is fixed to the drive shaft 32.
The stator 34 is fixed to the housing 35, and surrounds the
rotor 33. An upper end portion of the drive shaft 32
projecting out toward the upper side from the housing 35
serves as a first drive shaft portion 32A that transmits
20 a driving force to the first yarn processing section 100A.
A lower end portion of the drive shaft 32 projecting out
toward the lower side from the housing 35 serves as a second
drive shaft portion 32B that transmits the driving force
to the second yarn processing section 100B. The rotor 33
25 and the stator 34 are arranged between the first yarn
processing section 100A and the second yarn processing
section 100B in a direction parallel to the drive shaft 32.
As illustrated in FIGS. 3 and 4, the first
transmitting mechanism 90A includes a first arm 91A and a
30 first coupling member 92A, and transmits the driving force
from the first drive shaft portion 32A of the driving motor
12 / 32
31 to the first yarn holding section 60A and the first yarn
cutting section 70A. The first arm 91A is fixed to the first
drive shaft portion 32A. A back-end portion of the first
coupling member 92A is rotatably coupled to the first arm
5 91A. The first coupling member 92A is bent in a crank-shape
toward the first yarn holding section 60A. In FIG. 4, the
illustration of the first yarn holding section 60A is
omitted.
The first yarn cutting section 70A includes a fixed
10 piece 71 and a movable piece 72 . The fixed piece 71 is fixed
to the first guide plate 21. The movable piece 72 is
rotatably supported by a support shaft 73 fixed to the first
guide plate 21. A front-end portion of the first coupling
member 92A is rotatably coupled to an arm 74 extending from
15 a base-end portion of the movable piece 72.
The first yarn holding section 60A includes a base
member 61 and a sub member 62. A base-end portion of the
base member 61 is rotatably supported by a support shaft
63 fixed to the first guide plate 21. The base member 61
20 is urged to return to a position corresponding to the guide
groove 21a of the first guide plate 21 by a torsion coil
spring 67 rotatably attached to the support shaft 63. A
base-end portion of the sub member 62 is rotatably supported
by a support shaft 64 fixed to the base member 61. The sub
25 member 62 is urged toward the base member 61 by a torsion
coil spring 65 rotatably attached to the support shaft 64.
In the first yarn holding section 60A, the upper yarn YA
is held by the base member 61 and the sub member 62.
An arm 66 extends from the base-end portion of the
30 base member 61. A cam follower 66a is mounted to a tip-end
portion of the arm 66 such that a side surface 92a at a back
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side of a bent portion in the first coupling member 92A can
make contact with the cam follower 66a. An arm 68 extends
from the base-end portion of the sub member 62. A cam
follower 68a is mounted to a tip-end portion of the arm 68
5 such that a side surface 92b at a front side of the bent
portion in the first coupling member 92A can make contact
with the cam follower 68a.
The first arm 91A is provided with a magnet 98a and
a pair of magnets 98b. The pair of magnets 98b are arranged
10 to be adjacent to the magnet 98a with the magnet 98a
therebetween, and have a polarity opposite to the magnet
98a. A magnetic sensor 99 adapted to detect the polarity
of the magnet 98a is mounted to the frame body 20. The
magnetic sensor 99 is arranged to face the magnet 98a under
15 a state where the first yarn processing section 100A and
the second yarn processing section 100B are at the initial
positions. Thus, the operation of the driving motor 31 is
controlled with the state where the first yarn processing
section 100A and the second yarn processing section 100B
20 are at the initial positions as a reference.
As illustrated in FIG. 5, the second transmitting
mechanism 90B includes a second arm 91B and a second
coupling member 92B, and transmits the driving force from
the second drive shaft portion 32B of the driving motor 31
25 to the second yarn holding section 60B and the second yarn
cutting section 70B. The second arm 91B is fixed to the
second drive shaft portion 32B. A back-end portion of the
second coupling member 92B is rotatably coupled to the
second arm 91B. The second coupling member 92B is bent in
30 a crank-shape toward the second yarn holding section 60B.
As illustrated in FIG. 2, the configuration of the
14/32
second yarn cutting section 70B is in a point symmetric
relationship with the configuration of the first yarn
cutting section 70A with the yarn joining section 50 as a
center when seen from the front side. Similarly, the
5 configuration of the first yarn holding section 60A is in
a point symmetric relationship with the configuration of
the second yarn holding section 60B with the yarn joining
section 50 as a center when seen from the front side.
As illustrated in FIGS. 6 and 7, the yarn joining
10 section 50 of the present embodiment includes a yarn joining
nozzle structure 100. The yarn joining nozzle structure
100 includes a twisting nozzle 110, a twisting nozzle
supporting body 120, and an O-ring 130. As will be
described in detail below, the twisting nozzle 110 is
15 removably fixed by non-adhesion to the twisting nozzle
supporting body 120 by way of the O-ring 130.
The twisting nozzle 110 is made of ceramics, for
example. The twisting nozzle 110 has a U-shaped (arcuate)
curved surface 110a that is convex toward the back side when
20 seen in the top-bottom direction, which is the yarn path
direction. A front surface 110b of the twisting nozzle 110
has a planar shape perpendicular to the front-back
direction, and the front surface 110b is provided with a
groove 111 extending in a V-shaped cross-section from the
25 upper end to the lower end. A yarn joining chamber 113 that
communicates with the groove 111 through a passage section
112 is formed at the bottom of the groove 111. The yarn
joining chamber 113 is a space where the yarn joining
operation is carried out by the action of the compressed
30 air. As illustrated in FIGS. 8 and 9, the yarn joining
chamber 113 has an upper yarn joining chamber 113a and a
15 / 32
lower yarn joining chamber 113b.
The upper yarn joining chamber 113a is provided on
the upper side from a center in the top-bottom direction
in the twisting nozzle 110, and is opened to the upper side.
5 The upper yarn joining chamber 113a has a circular shape
which is off-centered to one side from the center in the
left-right direction when seen from the top. The lower yarn
joining chamber 113b is provided on the lower side from the
center in the top-bottom direction in the twisting nozzle
10 110, and is opened to the lower side. The lower yarn joining
chamber 113b has a circular shape which is off-centered to
the other side from the center in the left-right direction
when seen from the bottom. The upper yarn joining chamber
113a and the lower yarn joining chamber 113b communicate
15 with each other at a central part in the top-bottom
direction in the twisting nozzle 110.
As illustrated in FIGS. 7 and 9, a step 114 is formed
at an outer edge portion of the curved surface 110a so as
to annularly extend along an outer edge thereof. The step
20 114 is depressed with a step difference smaller than the
thickness (i.e., diameter in the cross-section of the
O-ring 130), which is a thickness of the O-ring 130, and
a recess 115 is formed by the annular step 114.
A plurality of holding projections 116 for holding
25 the O-ring 130 are provided on an inner side by a
predetermined length from the step 114 in the recess 115.
An air flow path 140a is formed on one side in the left-right
direction at a bottom surface 115a of the recess 115, and
an air flow path 140b is formed on the other side in the
30 left-right direction at the bottom surface 115a of the
recess 115. The air flow path 140a is a through-hole
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connecting to the upper yarn joining chamber 113a from the
interior of the recess 115, and is provided to supply the
compressed air to the upper yarn joining chamber 113a. The
air flow path 140b is a through-hole connecting to the lower
5 yarn joining chamber 113b from the interior of the recess
115, and is provided to supply the compressed air to the
lower yarn joining chamber 113b. The compressed air
flowing through the air flow paths 140a, 140b is injected
from an injection port 117 in the upper yarn joining chamber
10 113a and the lower yarn joining chamber 113b.
The O-ring 130 is made of, for example, fluorine
containing rubber, silicon rubber, or nitrile rubber (NBR) .
The O-ring 130 is not particularly limited, and various
types of generally-used O-rings can be used. The O-ring
15 130 is attached to the step 114 of the twisting nozzle 110.
Specifically, the O-ring 130 is bent in a U-shape, and is
fitted between the inner side of the step 114 and the outer
side of the holding projection 116 while being arranged
along the step 114 in the recess 115. The O-ring 130 is
20 thus held by the outer side of the holding projection 116
while making contact with the inner side of the step 114.
The twisting nozzle supporting body 120 is made of
metal such as aluminum or resin, for example, and has a
substantially cuboid shape. An accommodation section 121
25 adapted to accommodate the twisting nozzle 110 is formed
in the twisting nozzle supporting body 120. Both ends in
the top-bottom direction in the accommodation section 121
are U-shaped openings opened to the front side, and are
defined by a U-shaped curved surface 121a corresponding to
30 the curved surface 110a of the twisting nozzle 110 when seen
in the top-bottom direction. A central part in the
17/32
top-bottom direction in the accommodation section 121 is
a rectangular opening opened to the front side, and is
defined by a rectangular surface 121b forming a rectangular
shape when seen in the top-bottom direction. An air flow
5 path 122 is formed in a side surface 120a of the twisting
nozzle supporting body 120. The air flow path 122 is a
through-hole passing from the side surface 120a of the
twisting nozzle supporting body 120 to the interior of the
accommodation section 121, and is provided to supply the
10 compressed air from the twisting nozzle supporting body 120
to the twisting nozzle 110. The compressed air is supplied
to the air flow path 122 from a compressed air supply source
(not illustrated).
As illustrated in FIG. 9, the twisting nozzle 110
15 attached with the O-ring 130 is fitted to the accommodation
section 121 of the twisting nozzle supporting body 120. An
air distributing chamber 150 is formed between the twisting
nozzle 110 and the twisting nozzle supporting body 12 0 . The
air distributing chamber 150 is an air flow path 151 that
20 causes the compressed air to flow from the twisting nozzle
supporting body 120 side toward the twisting nozzle 110 side,
and distributes the compressed air to a plurality of
injection ports 117 of the yarn joining chamber 113. The
air distributing chamber 150 communicates with the air flow
25 path 122 of the twisting nozzle supporting body 120 and also
communicates with the air flow paths 140a, 140b of the
twisting nozzle 110. The above air distributing chamber
150 is defined by the O-ring 130 and the opposing surfaces
facing each other in each of the twisting nozzle 110 and
30 the accommodation section 121 (i.e., the bottom surface
115a of the recess 115 in the twisting nozzle 110, the curved
18/32
surface 121a and the rectangular surface 121b of the
accommodation section 121).
Under a state where the twisting nozzle 110 is
attached to the twisting nozzle supporting body 120, the
5 O-ring 130 surrounds and seals the air distributing chamber
150 (air flow path 151). In this case, the O-ring 130 is
pushed and deformed in the front-back direction by the
twisting nozzle 110 and the accommodation section 121 of
the twisting nozzle supporting body 120. The twisting
10 nozzle supporting body 120 is fixed to the frame body 20
(see FIG. 2) with a bolt and the like inserted to a bolt
hole 124.
As illustrated in FIGS. 2 and 6, the yarn joining
nozzle structure 100 is provided with a holding plate
15 (holding member) 160 adapted to hold the twisting nozzle
110 against the elastic force of the O-ring 130. The
holding plate 160 is provided on one side and the other side
of the groove 111 in the left-right direction at the front
side of the twisting nozzle 110 and the twisting nozzle
20 supporting body 120. The holding plate 160 has a flat plate
shape, and is arranged to bridge across the front surface
110b of the twisting nozzle 110 and a front surface 120b
of the twisting nozzle supporting body 120, and is fixed
to the twisting nozzle supporting body 120 with the bolt
25 and the like. The twisting nozzle 110 is held down toward
the back side (twisting nozzle supporting body 120 side)
by the holding plate 160.
As illustrated in FIG. 2, the yarn joining nozzle
structure 100 is arranged between guide plates 51, 52
30 arranged side by side to vertically face each other, and
is vertically sandwiched by the guide plates 51, 52. The
19 /32
guide plates 51, 52 are adapted to guide the yarn Y
introduced to the yarn joining chamber 113, and are fixed
to the frame body 20. The twisting nozzle 110 is thereby
vertically held down by the guide plates 51, 52.
5 [Operation of yarn joining device]
When the yarn joining operation is carried out in the
yarn joining device 10, the compressed air is supplied to
the yarn joining section 50, and the compressed air flows
through the air flow path 151 of the twisting nozzle
10 supporting body 120 in the yarn joining nozzle structure
100, then passes the air distributing chamber 150 and flows
through the air flow paths 140a, 140b, and is injected as
a yarn joining air from the injection ports 117 of the yarn
joining chamber 113 (see FIG. 9) . The yarn end of the upper
15 yarn YA unwound by the first untwisting section 40A and the
yarn end of the lower yarn YB unwound by the second
untwisting section 40B are thereby twisted. In this case,
the upper yarn YA is in a state being held by the first yarn
holding section 60A, and the lower yarn YB is in a state
20 being held by the second yarn holding section 60B.
[Operations and Effects]
In the yarn joining nozzle structure 100, the
twisting nozzle 110 is attached to the twisting nozzle
supporting body 120 by way of the O-ring 130 surrounding
25 the air flow path 151. Specifically, the twisting nozzle
supporting body 120 and the twisting nozzle 110 are attached
and fixed to each other while enclosing and sealing the air
flow path 151, which is the air distributing chamber 150
formed between the twisting nozzle supporting body 120 and
30 the twisting nozzle 110, so as to be sealed with respect
to the exterior by the O-ring 130. Thus, the twisting
20 / 32
nozzle 110 can be attached to the twisting nozzle supporting
body 120 without using an adhesive while suppressing the
air leakage from the air flow path 151. Furthermore, a
uniform sealing force can be obtained between the twisting
5 nozzle supporting body 120 and the twisting nozzle 110 by
the elastic force of the O-ring 130. Therefore, the
attachment of the twisting nozzle 110 to the twisting nozzle
supporting body 120 can be realized by non-adhesion. As
a result, the operation, the trouble, and the quality
10 associated with the attachment can be suppressed from
varying, and for example, the replacement at the time of
maintenance and breakage of the twisting nozzle 110 can be
facilitated.
In the yarn joining nozzle structure 100, the air
15 distributing chamber 150 is defined by the O-ring 130 and
the opposing surfaces (bottom surface 115a, curved surface
121a, and rectangular surface 121b) facing each other in
each of the twisting nozzle 110 and the accommodation
section 121. The air distributing chamber 150 thus can be
20 easily formed.
In the yarn joining nozzle structure 100, the O-ring
130 is used as an elastic member serving as a gasket
structure interposed for the attachment of the twisting
nozzle 110 to the twisting nozzle supporting body 120. The
25 elastic member thus can be formed inexpensively.
In the yarn joining nozzle structure 100, the step
114 depressed with a step difference smaller than the
thickness of the O-ring 130 is formed in the curved surface
110a, which is the opposing surface of the twisting nozzle
30 110, and the O-ring 130 is attached to the step 114. The
O-ring 130 thus can be actively brought into contact with
21 /32
the curved surface 121a of the twisting nozzle supporting
body 120, and a gap can be prevented from forming (reliable
air tightness is obtained) between the twisting nozzle 110
and the accommodation section 121. Furthermore, since the
5 O-ring 130 can be actively brought into contact, tolerance
of dimensional accuracy related to the attachment of the
twisting nozzle 110 to the accommodation section 121
becomes large.
In the yarn joining nozzle structure 100, the curved
10 surface 110a facing the accommodation section 121 in the
twisting nozzle 110 has a U-shape when seen from the yarn
path direction (top-bottom direction). Therefore, the
O-ring 130 can be easily fitted uniformly, and the
attachment/detachment of the twisting nozzle 110 to the
15 accommodation section 121 is facilitated.
In the yarn joining nozzle structure 100, the
twisting nozzle 110 is made of ceramics. Thus, the
attachment of the twisting nozzle 110 to the twisting nozzle
supporting body 120 can be realized by non-adhesion while
20 preventing breakage of the yarn joining nozzle structure.
Since the textile machine including the yarn joining
device 10, the winding unit 1, and the plurality of winding
units 1 also includes the yarn joining nozzle structure 100,
there is obtained the effect of realizing the attachment
25 of the twisting nozzle 110 to the twisting nozzle supporting
body 120 by non-adhesion. Since the twisting nozzle 110
can be held with the holding plate 160 against the elastic
force of the O-ring 130, the air leakage from the air flow
path 151 can be reliably suppressed.
30 One embodiment of the present invention has been
described above, but the present invention is not limited
22/32
to the above embodiment. For example, the twisting nozzle
110 is attached to the twisting nozzle supporting body 120
by way of the O-ring 130 in the embodiment described above,
but the twisting nozzle 110 may be attached to the twisting
5 nozzle supporting body 120 by way of a rubber sheet. In
this case, the rubber sheet has a frame shape, for example,
and is bent tin a U-shape when seen in the yarn path direction
and interposed between the twisting nozzle 110 and the
twisting nozzle supporting body 120 so as to surround the
10 air flow path 151. Furthermore, various elastic bodies can
be used for the elastic body as long as the elastic body
can surround the air flow path 151.
In the embodiment described above, an annular gasket
formed of an elastic material such as rubber, for example,
15 may be used in place of the O-ring 130 having a circular
cross-section. The annular gasket may have a non-circular
cross-section (e.g., elliptical cross-section,
rectangular cross-section, polygonal cross-section,
arcuate cross-section, V-shaped cross-section, or a
20 combination thereof). The outer shape of the annular
gasket may be circular (circular ring), elliptic
(elliptical ring), rectangular (rectangular ring),
polygonal (polygonal ring), or a combination thereof.
In the embodiment described above, the twisting
25 nozzle 110 is made of ceramics, but the twisting nozzle 110
may be made of metal or may be made of brass and the like,
for example. In this case, the twisting nozzle 110 may be
formed rigid (with high strength) so as not to break easily.
The twisting nozzle 110 may be made of resin, and for example,
30 may be made of ABS resin subjected to plating or vapor
deposition, or may be made of an engineering plastic such
23 /32
as nylon. In this case, the twisting nozzle 110, and
furthermore, the yarn joining nozzle structure 100 can be
mass produced inexpensively.
In the embodiment described above, the twisting
5 nozzle supporting body 120 is provided with the holding
plate 160, but the frame body 20 may be provided with the
holding plate 160. As long as the twisting nozzle 110 is
held against the elastic force of the O-ring 130, other
holding members may be provided in place of or in addition
10 to the holding plate 160 . In the embodiment described above,
the twisting nozzle 110 may be fixed to the twisting nozzle
supporting body 120 by further using the magnetic force.
In the embodiment described above, the yarn joining
device 10 is applied to the winding unit 1 of the automatic
15 winder, but a yarn joining device of the present invention
may be applied to a winding unit of a spinning machine, an
operation cart adapted to move between a plurality of
winding units, or the like. In the description made above,
the curved surface 110a in the twisting nozzle 110 and the
20 bottom surface 115a of the recess 115, and the curved
surface 121a and the rectangular surface 121b of the
accommodation section 121 in the twisting nozzle supporting
body 120 constitute opposing surfaces facing each other.
In the yarn joining nozzle structure, the twisting
25 nozzle is attached to the twisting nozzle supporting body
by way of the elastic member that surrounds at least a part
of the air flow path. Thus, the twisting nozzle can be
attached to the twisting nozzle supporting body while
suppressing the leakage of air from the air flow path
30 without using an adhesive. Furthermore, a uniform sealing
force by the elastic force of the elastic member can be
24/32
obtained between the twisting nozzle supporting body and
the twisting nozzle. Therefore, the attachment of the
twisting nozzle to the twisting nozzle supporting body can
be realized by non-adhesion.
5 In the yarn joining nozzle structure of the present
invention, the air flow path may be provided with an air
distributing chamber adapted to distribute the compressed
air to a plurality of injection ports adapted to inject the
compressed air to the yarn joining chamber; and the air
10 distributing chamber may be defined by the elastic member
and opposing surfaces facing each other in each of the
twisting nozzle and the accommodation section. According
to such a configuration, the air distributing chamber can
be easily formed in the air flow path.
15 In the yarn joining nozzle structure of the present
invention, the elastic member may be any of an O-ring, an
annular gasket, and a rubber sheet. According to such a
configuration, the elastic member can be formed
inexpensively.
20 In the yarn joining nozzle structure of the present
invention, a step depressed with a step difference smaller
than a thickness of the elastic member may be formed on the
opposing surface facing the accommodation section in the
twisting nozzle, and the elastic member may be attached to
25 the step. According to such a configuration, the O-ring
can be actively brought into contact, and a gap can be
prevented from being formed between the twisting nozzle and
the accommodation section.
In the yarn joining nozzle structure of the present
30 invention, the opposing surface facing the accommodation
section in the twisting nozzle may have a U-shape when seen
25 / 32
in a yarn path direction. According to such a configuration,
the O-ring can be easily fitted uniformly, and attachment
and detachment of the twisting nozzle to and from the
accommodation section are facilitated.
5 In the yarn joining nozzle structure of the present
invention, the twisting nozzle may be made of ceramics, in
which case, the attachment of the twisting nozzle to the
twisting nozzle supporting body can be realized by
non-adhesion while preventing the breakage of the yarn
10 joining nozzle structure. The twisting nozzle may be made
of metal, in which case, the twisting nozzle can be formed
rigid so as not to break easily. The twisting nozzle may
be made of resin, in which case, the twisting nozzle, and
furthermore, the yarn joining nozzle structure can be mass
15 produced inexpensively.
A yarn joining device of the present invention is a
yarn joining device including the yarn joining nozzle
structure, the yarn joining device further including a
device main body section to which the twisting nozzle
20 supporting body is attached; and the twisting nozzle
supporting body or the device main body section includes
a holding member adapted to hold the twisting nozzle against
an elastic force of the elastic member. A winding unit of
the present invention includes the yarn joining device, a
25 yarn supplying section adapted to supply a yarn, and a
winding section adapted to wind the yarn. A textile machine
of the present invention includes a plurality of the winding
units.
The yarn joining device, the winding unit, and the
30 textile machine also includes the yarn joining nozzle
structure, and thus have the effect of realizing the
26 / 32
attachment of the twisting nozzle to the twisting nozzle
supporting body by non-adhesion. Furthermore, since the
twisting nozzle can be held with the holding member against
the elastic force, the air leakage from the air flow path
5 can be reliably suppressed. The holding member may be a
holding plate fixed to the twisting nozzle supporting body.
According to the present invention, there are
provided a twisting nozzle, a yarn joining nozzle structure,
a yarn joining device, a winding unit, and a textile machine
10 in which the attachment of the twisting nozzle to the
twisting nozzle supporting body can be realized by
non-adhesion.
27 / 32
WE CLAIM:
1. A yarn joining nozzle structure comprising:
a twisting nozzle provided with a yarn joining
chamber where a yarn joining operation is carried out by
an action of a compressed air; and
a twisting nozzle supporting body provided with an
accommodation section adapted to accommodate the twisting
nozzle, the yarn joining nozzle structure further
comprising:
an air flow path provided to communicate the twisting
nozzle supporting body with the twisting nozzle, and
adapted to supply the compressed air from the twisting
nozzle supporting body to the yarn joining chamber of the
twisting nozzle,
wherein the twisting nozzle is attached to the
twisting nozzle supporting body with at least one removable
elastic member that surrounds the air flow path being
arranged between the twisting nozzle and the twisting
nozzle supporting body.
2. The yarn joining nozzle structure according to
claim 1, wherein
the air flow path is provided with an air distributing
chamber adapted to distribute the compressed air to a
plurality of injection ports adapted to inject the
compressed air to the yarn joining chamber, and
the air distributing chamber is defined by the
elastic member and opposing surfaces facing each other in
each of the twisting nozzle and the accommodation section.
3. The yarn joining nozzle structure according to
claim 1 or 2, wherein the elastic member is any of an O-ring,
an annular gasket, and a rubber sheet.
4. The yarn joining nozzle structure according to
any one of claims 1 to 3, wherein
a step depressed with a step difference smaller than
a thickness of the elastic member is formed on the opposing
surface facing the accommodation section in the twisting
nozzle, and
the elastic member is attached to the step.
5. The yarn joining nozzle structure according to
claim 4, wherein the opposing surface facing the
accommodation section in the twisting nozzle has a U-shape
when seen from a yarn path direction.
6. The yarn joining nozzle structure according to
any one of claims 1 to 5, wherein the twisting nozzle is
made of ceramics.
7. The yarn joining nozzle structure according to
any one of claims 1 to 5, wherein the twisting nozzle is
made of metal.
8. The yarn joining nozzle structure according to
any one of claims 1 to 5, wherein the twisting nozzle is
made of resin.
9. A yarn joining device comprising:
the yarn joining nozzle structure according to any
one of claims 1 to 8,
the yarn joining device further comprising:
a device main body section to which the twisting
nozzle supporting body is attached,
wherein the twisting nozzle supporting body or the
device main body section is provided with a holding member
adapted to hold the twisting nozzle against an elastic force
of the elastic member.
10. The yarn joining device according to claim 9,
wherein the holding member is a holding plate fixed to the
twisting nozzle supporting body.
11. A winding unit comprising:
the yarn joining device according to claim 9 or 10;
a yarn supplying section adapted to supply a yarn;
and
a winding section adapted to wind the yarn.
12. A textile machine comprising a plurality of the
winding units according to claim 11.
13. A twisting nozzle provided with a yarn joining
chamber where a yarn joining operation is carried out by
an action of a compressed air,
wherein the twisting nozzle is attached to an
accommodation section of a twisting nozzle supporting body
of a yarn joining device by way of an elastic member, and
the twisting nozzle is provided with a step depressed
with a step difference smaller than a thickness of the
elastic member.
14. The twisting nozzle according to claim 13,
wherein an opposing surface of the twisting nozzle facing
the accommodation section has a U-shape when seen from a
yarn path direction.
15. The twisting nozzle according to claim 13 or 14,
wherein the twisting nozzle is made of ceramics.
16. The twisting nozzle according to claim 13 or 14,
wherein the twisting nozzle is made of metal.
17. The twisting nozzle according to claim 13 or 14,
wherein the twisting nozzle is made of resin.