TEXTILE J!'lACHINE
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a textile machine including
a bobbin holding section for holding a yarn supplying bobbin.
2. Description of the Related Art
Atextilemachine thatwinds ayarnunwound fromayarnsupplying
bobbin around a winding bobbin to form a package is conventionally
known. A satisfactory package can be formed by realizing an
appropriate position relationship of the yarn supplying bobbin and
a yarn guide arranged above the yarn supplying bobbin. Japanese
Unexamined Patent Publication No. 2011-241032 discloses a yarn
windingmachine (textilemachine) havinga configuration of realizing
an appropriate position relationship of the yarn supplying bobbin
and the yarn guide (unwinding assisting device) by controlling the
position (including posture) of the yarn supplying bobbin.
Japanese Unexamined Patent Publication No. 2011-241032
discloses a magazine type bobbin supplying device. The bobbin
holding section includes amotor for moving the yarn supplyingbobbin
so as to raise the yarn supplied in an inclined manner. The yarn
winding machine includes a sensor for detecting the yarn supplying
bobbin to be raised. The yarn winding machine can stop the yarn
supplying bobbin at an appropriate position by taking into
consideration the detection results of the sensor.
BRIEF SUMMARY OF THE INVENTION
However, the textile machine that does not include this type
of sensor cannot perform the positioning of the yarn supplyingbobbin
in the above manner. In this case, for example, the bobbin holding
section, a supporting member therefor, and the like need to be
accurately attached, and the yarn supplying bobbin needs to be
accurately stopped using an origin sensor such as a motor for driving
the bobbin holding section.
However, since this configuration requires the bobbin holding
section and the like to be accurately attached, the cost required
for the attachment increases. Furthermore, since various shapes and
inner diameters of the yarn supplying bobbins are supplied to the
yarn winding machine, different controls need to be performed
according to the type of yarn supplying bobbin supplied. It is thus
difficult to align the yarn supplying bobbin at an appropriate
position.
In view of the foregoing, it is a main object of the present
invention to provide a textile machine capable of aligning the yarn
supplying bobbin at an appropriate position without a sensor for
detecting the position of the yarn supplying bobbin.
Theproblemtobesolvedbythepresent invention is as described
above, and next, the means for solving such a problem and the effect
thereof will be described below.
According to an aspect of the present invention, a textile
machine having the following configuration is provided. In other
words, the textile machine includes a bobbin holding section, a drive
section, a drive control section, an origin sensor, and a command
value measuring section. The bobbin holding section is adapted to
hold a yarn supplying bobbin. The drive section is adapted to drive
the bobbin holding section. The drive control section is adapted to
send a command value to the drive section to control drive of the
drive section. The origin sensor is adapted to specify an origin
position, whichis areferencepositionofthebobbinholdingsection.
The command value measuring section is adapted to obtain the command
value necessary for moving the bobbin holding section from the origin
position to atargetpositionas anactualmeasurement commandvalue.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating an overall
configuration of an automatic winder according to one embodiment of
the present invention;
FIG. 2 is a schematic side view of a winder unit;
FIG. 3 is a perspective view illustrating a configuration of
a yarn supplying section;
FIG. 4 is a side view illustrating a state of a bobbin holding
section and a power transmitting section when receiving the yarn
supplying bobbin;
FIG. 5 is a side view illustrating a state of the bobbin holding
section and the power transmitting section when unwinding the yarn;
FIG. 6 is a side view illustrating a state of the bobbin holding
section and the power transmitting sectionwhen discharging the yarn
supplying bobbin;
FIG. 7 is a block diagram illustrating a configuration of a
position adjustment control of the yarn supplying bobbin;
FIG. 8 is a flowchart illustrating the position adjustment
control;
FIG. 9 is a schematic side view of a winder unit according to
a variant;
FIG. 10 is a plan view of the yarn supplying section;
FIG. 11 is a plan view of the yarn supplying section at the time
of discharging a transport tray; and
FIG. 12 is aplanviewillustratingastateof atransport guide.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Next, adescriptionwillbemade of anembodiment of the present
invention with reference to the drawings. First, an outline of an
automatic winder 1 of the present embodiment will be described with
reference to FIG. 1. FIG. 1 is an outer appearance perspective view
of the automatic winder 1 according to one embodiment of the present
invention. In the following description, a front side of a winder
unit 4 is sometimes simply referred to as a " froht side", and a rear
side of the winder unit 4 is sometimes simply referred to as a "rear
side".
The automatic winder (textile machine) 1 of the present
embodiment includes a plurality of winder units (winding units) 4
arranged in line, and a machine control device 7 arranged at one end
in a direction in which the plurality of winder units 4 are arranged
in line.
The machine control device 7 is configured to be communicable
with the plurality of winder units 4, so that the operations of the
plurality of winder units 4 can be managed in a concentrated manner
bythemachinecontrol device 7. Themachinecontrol device 7 includes
a machine input section 8 for carrying out various settings (input
of type of yarn supplying bobbin used in the winding operation of
each winder unit 4, etc. ) on each winder unit 4, and a machine display
section 9 capable of displaying status, and the like of the winding
operation of each winder unit 4.
Next, a description will be made on the winder unit 4 with
reference to FIG. 2. FIG. 2 is a schematic side view of the winder
unit4. Thewinderunit4 is adevicethat forms apackage 29 bywinding
a yarn from the yarn supplying bobbin 21 around a winding bobbin 22.
Hereinafter, eachsectionofthewinderunit4willbedescribedbelow.
As illustrated in FIG. 1 and FIG. 2, a bobbin supplying device
60 forthe operator to supply the yarn supplyingbobbin 21is arranged
on the front side of the winder unit 4. The bobbin supplying device
60 includes a magazine holder 61 extending in an upward direction
i n t h e f r o n t s u r f a c e f r o m t h e l o w e r p a r t o f t h e w i n d e r u n i t 4 , amagazine
can 62 attached to a distal end of the magazine holder 61, and a yarn
supplying bobbin guiding section 64 installedbelow the magazine can
62.
The magazine can 62 is formed with a plurality of accommodation
holes arranged in a circular shape, where a yarn supplying bobbin
21 can be set in an inclined posture in each accommodation hole. The
magazine can 62 is configured to be intermittently rotated driven
by a motor (not illustrated) . A predetermined yarn supplying bobbin
21 can be dropped to the obliquely downward side by the intermittent
drive of the magazine can 62 and the opening/closing operation of
a control valve (not illustrated) arranged in the magazine can 62.
The yarn supplying bobbin guiding section 64 is configured to
obliquelyslidetheyarnsupplyingbobbin21dropped fromthemagazine
can62toguidetheyarnsupplyingbobbin21toayarnsupplyingsection
10. The details of the yarn supplying section 10 will be described
later.
Theyarnoftheyarnsupplyingbobbin21setintheyarnsupplying
section 10 is wound by a winding section 1 6 , and the like. As
illustrated in FIG. 2 , the winder unit 4 has, as main devices arranged
onayarntravellingpath, anunwindingassistingdevice12, atension
applying device 1 3 , a yarn joining device 1 4 , and a clearer (yarn
qualitymeasuringdevice) 15 arrangedinorder fromtheyarnsupplying
section 10 toward the package 29.
The unwinding assisting device 12 includes a regulatingmember
27 that makes contact with a portion (balloon) where the yarn 20
unwound from the yarn supplying bobbin 21 is swung by centrifugal
force andexpandedtothe outer side. Theunwinding assistingdevice
12 can lower the regulating member 27 so as to approach the yarn
supplying bobbin 21. The yarn 20 is thus suppressed from being swung
excessively, and the balloon can be maintained to a prescribed size.
Therefore, the winder unit 4 can carry out the unwinding of the yarn
20 from the yarn supplying bobbin 21 at a prescribed tension.
Inorder fortheunwindingassistingdevice12 to appropriately
carry out the unwinding assisting operation, the center of the yarn
supplying bobbin 21 and the center of the regulating member 27 need
to be satisfactorily coincided. With regards to this, a position
adjustment control for adjusting the position of the yarn supplying
bobbin 21 is carried out to satisfy such a demand in the present
embodiment. The details of the position adjustment control will be
described later.
The tension applying device 13 applies apredeterminedtension
on the travelling yarn 20. The tension applying device 13 of the
present embodiment is con£ igured as a gate type in which movable comb
teeth are arranged with respect to fixed comb teeth. The comb teeth
on the movable side are configured to be swingable by a rotary type
solenoid so that the comb teeth can be in a meshed state or a released
state.
A lower yarn detection sensor 31 is arranged between the
unwinding assisting device 12 and the tension applying device 1 3 .
The lower yarn detection sensor 31 is configured to detect whether
or not the yarn is travelling at the arranged position.
The clearer 15 is configured to detect the yarn defect (yarn
drawback) such as slub by monitoring the yarn thickness of the yarn
20. A cutter 39 for immediately cutting the yarn 20 when the clearer
15 detects the yarn defect is arranged on the upstream side (lower
side) of the yarn path regarding the clearer 15.
The yarn joining device 14 joins the lower yarn from the yarn
supplying bobbin 21 and the upper yarn from the package 29, after
a yarn cut when the clearer 15 detects a yarn defect and the cutter
39 cuts the yarn, af ter yarn breakage of the yarn being unwound from
the yarn supplying bobbin 21, or at the time of changing the yarn
supplying bobbin 21. The yarn joining device 14 may be a type that
uses a fluid such as compressed air, or may be a mechanical type.
A lower yarn guiding pipe 25 for catching and guiding the lower
yarn from the yarn supplying bobbin 21 and an upper yarn guiding pipe
26 for catching and guiding the upper yarn from the package 29 are
arranged on the lower side and the upper side of the yarn joining
device 14. A suction port 32 is formed at the tip of the lower yarn
guiding pipe 25, and a suction mouth 34 is arranged at the tip of
the upper yarn guiding pipe 26. An appropriate negative pressure
source is connected to each of the lower yarn guiding pipe 25 and
the upper yarn guiding pipe 26 to cause the suction port 32 and the
suction mouth 34 to generate a suction force.
When changing the yarn supplying bobbin in this configuration,
the suction port 32 of the lower yarn guiding pipe 25 is swung to
the lower side to suck and catch the lower yarn, and thereafter, swung
to the upper side with a shaft 33 as a center to guide the lower yarn
to the yarn joining device 14. At substantially the same time, the
upper yarn guiding pipe 26 is swung to the upper side with a shaft
35 as the center from the position of FIG. 2 and reversely rotates
the package 29 to catch the upper yarn unwound from the package 29
with the suction mouth 34. Then, the upper yarn guiding pipe 26 is
swung to the lower side with the shaft 35 as the center to guide the
upper yarn tothe yarn joining device 14. The lower yarnand the upper
yarn are then joined in the yarn joining device 14.
The winder unit 4 includes a unit input section 18 to which
settings, and the like of the yarn supplying section 1 0 , the winding
section 1 6 , or the like can be input. The unit input section 18 may
be configured, for example, as a key or a button.
The winder unit 4 further includes a cradle 23 and a traverse
drum 24 on a further downstream side of the clearer 1 5 . The cradle
23 is configured such that the winding bobbin 22 can be attached.
The traverse drum 24 traverses the yarn 20 and drives the winding
bobbin 22 to wind the yarn 20.
With the above configuration, each winder unit 4 of the
automaticwinder1canwindtheyarn20 unwound fromtheyarnsupplying
bobbin 21 around the winding bobbin 22 to form the package 29 having
a predetermined length.
Next, a description will be made on the yarn supplying section
10 with reference to FIG. 3 to FIG. 7. FIG. 3 is a perspective view
illustrating a configuration of the yarn supplying section 1 0 . FIG.
4 to FIG. 6 are side views each illustrating configurations of the
bobbin holding section 110 and the power transmitting section 1 2 0 .
FIG. 7 is a block diagram illustrating a con£ iguration for performing
the control of the bobbin holding section 1 1 0 .
As illustratedinFIG. 3, theyarnsupplyingsectionlo includes
thebobbinholding section110 forholding the suppliedyarnsupplying
bobbin 21, a springboard 40 for dischargingtheyarn supplyingbobbin
21 (core tube 21a) in which the unwinding of the yarn 20 is completed,
and a stepping motor 100 for operating the bobbin holding section
110 and the springboard 40. As illustrated in FIG. 7, the drive of
the stepping motor 100 is controlled by a drive control section 71.
The bobbin holding section 110 can oscillate as illustrated in
FIG. 4 to FIG. 6 to change the position of the unwinding end of the
yarn supplying bobbin 21. The bobbin holding section 110 is
configured by a main axis member 80 and an auxiliary main axis member
90. The main axis member 80 and the auxiliary main axis member 90
are in a closed state when the yarn supplying bobbin 21 is supplied
so as to enter the interior of the core tube 2 1 a , as illustrated in
FIG. 4. The auxiliarymain axis member 90 oscillates in the direction
of moving away from the main axis member 80 in this state to hold
the yarn supplying bobbin 21 (see F I G . 5) . Moreover, by oscillating
the springboard 40 with the holding of the yarn supplying bobbin 21
by the bobbin holding section 110 released, the bottom of the core
tube 21a is pushed out and pulled out from the main axis member 80
and the auxiliary main axis member 90, so that the empty core tube
21a of the yarn supplying bobbin 21 can be discharged (see F I G . 6 ) .
Next, adescriptionwillbemadeonapowertransmittingsection
120 for transmitting power generated by the stepping motor 100. The
power transmitting section 120 includes a main axis member drive cam
81, a bearing 82, an oscillation arm 83, a positioning arm 84a, a
contact arm 84b, a transmission shaft 85, and a pushing spring 86,
as a configuration for oscillatingthemainaxismember 80. Thepower
transmitting section 120 includes a transmission belt 103, a pulley
104, and a cam shaft 105 as a con£ iguration for transmitting the power
of the stepping motor 100 to the main axis member drive cam 81 and
the like.
The pulley 104 is fixed to the cam shaft 105, and the pulley
104 is coupled to the output shaft of the stepping motor 100 through
the transmissionbelt103. The transmissionbelt 103 is simplydrawn
in F I G . 3, but is configured as a timing belt with teeth, and the
rotation of the output shaft of the stepping motor 100 can be
transmitted to the cam shaft 105 without sliding.
A magnet sensor 72 (see the block diagram of F I G . 7) is attached
to the pulley 104. The magnet sensor 72 .is configured to transmit
a detection signal when the pulley 104 or the cam shaft 105 is at
a predetermined rotation phase. The rotation position of the
stepping motor 100 when the magnet sensor 72 transmits the detection
signal is assumed as an origin, and the rotation control of the
steppingmotor100 is carriedoutwithsuchanoriginasthe reference.
Thepositionofthebobbinholdingsection110whenthe steppingmotor
100 is at the origin is referred to as an origin position. In the
present embodiment, the position where the yarn supplying bobbin 21
is held by the auxiliary main axis member 90 and the main axis member
80 (position of the bobbin holding section 110 of F I G . 5) is set as
the origin position. The origin position is specified by the
detection signal of the magnet sensor 72, as described above.
The main axis member drive cam 81 is fixed to the cam shaft 105
and integrally rotates with the cam shaft 105. The oscillation arm
83 is arranged on the rear side of the auxiliary main axis member
drive cam 81, and the rotatable bearing 82 is attached to the middle
part of the oscillation arm 83. The bearing 82 is configured to
appropriately rotate while making contact with the outer peripheral
surface of the main axis member drive cam 81.
The distal end of the oscillation arm 83 is coupled, through
arodshapedlink, tothelowerendofthepositioningarm84asupported
in an oscillating manner at the appropriate position of the power
transmitting section 120. A rotatable rotation member 87 is
supported at the upper end of the positioning arm 84a.
The contact arm 84b is arranged on the front side of the
positioning arm 84a. The distal end of the contact arm 84b is
configured so as to be able to make contact with the rotation member
87 attached to the positioning arm 84a. One end of the transmission
shaft 85 is fixed to the base of the contact arm 84b, and the other
end of the transmission shaft 85 is fixed to the main axis member
80. That is, the transmission shaft 85 and the main axis member 80
are configured to cooperatively operate. Therefore, the main axis
member 80 integrally rotates with the contact arm 84b. The torsion
coil spring shaped pushing spring 86 is attached to the contact arm
84b to bias the contact arm 84b in the direction of the arrow in FIG.
3.
According to the above configuration, the elastic force of the
pushing spring 86 acts on the contact arm 84b, so that a projection
thereof makes contact with the rotation member 87 thus pushing the
positioning arm 84a. Furthermore, since the lower end of the
positioning arm 84a pulls the oscillation arm 83 through the link,
the bearing 82 of the oscillation arm 83 is pushed against the main
axis member drive cam 81. Accordingly, the pushing spring 86
generates a spring force for bringing the main axis member drive cam
81 and the bearing 82 into contact, and for bringing the contact arm
84b into contact with the positioning arm 84a.
When the main axis member drive cam 81 rotates in such a state
and the peripheral edge of the main axis member drive cam 81 (bulged
portion to be described later) pushes the bearing 82, the oscillation
arm 83 is swung in the direction of moving away from the cam shaft
105, and the distal end of the oscillation arm 83 pulls the lower
end of the positioning arm 84a through the link. As a result, the
rotation member 87 at the upper end of the positioning arm 84a pushes
the contact arm 84b, so that the main axis member 80 can be oscillated
toward the front side along with the contact arm 84b.
The power transmitting section 120 includes an auxiliary main
axis member drive cam 91, a bearing 92, an oscillation arm 93, a
transmission arm 94, a transmission shaft 95, and a holding spring
96 as aconfiguration fortransmittingthepowerof the steppingmotor
100 to the auxiliary main axis member 90.
The auxiliary main axis member drive cam 91 is fixed to the cam
shaft 105, similarly to the main axis member drive cam 81. The
oscillation arm 93 is arranged on the rear side of the auxiliary main
axis member drive cam 91, and the rotatable bearing 92 is attached
to the middle part of the oscillation arm 93. The bearing 92 is
configuredtoappropriatelyrotatewhilemakingcontactwiththe outer
peripheral surface of the auxiliary main axis member drive cam 91.
The distal end of the oscillation arm 93 is coupled to the lower
end of the transmission arm 94 supported in an oscillating manner
at the appropriate position of the power transmitting section
120through a rod shaped link. One end of the transmission shaft 95
is attached to the base of the transmission arm 94, and the other
end of the transmission shaft 95 is fixed to the auxiliary main axis
member 90. That is, the transmission shaft 95 and the auxiliarymain
axis member 90 are configured to cooperatively operate. Therefore,
the auxiliary main axis member 90 integrally rotates with the
transmission arm 94. The torsion coil spring shaped holding spring
96 is attached to the transmission arm 94 to bias the transmission
arm 94 in the direction of the dotted line arrow of FIG. 3.
With such a configuration, the holding spring 96 acts with the
spring force in the direction, inwhichtheauxiliarymainaxismember
10 / 30
90 oscillates toward the rear side (direction of moving away from
the main axis member 80) on the auxiliary main axis member 90 through
the transmission arm 94 and the transmission shaft 95. At the same
time, since the distal end of the transmission arm 94, on which the
elastic force of the holding spring 96 acts, pulls the oscillation
arm 93 through the link, the bearing 92 of the oscillation arm 93
is pushed against the auxiliary main axis member drive cam 91.
Accordingly, the holding spring 96 generates the spring force for
bringing the auxiliary main axis member drive cam 91 and the bearing
92 into contact.
When the auxiliarymainaxismember drive cam91rotates in this
state and the peripheral edge of the auxiliary main axis member drive
cam 91 (bulged portion to be described later) pushes the bearing 92,
the oscillation arm 93 is oscillated in the direction of moving away
from the cam shaft 105 and the distal end of the oscillation arm 93
pulls the lower end of the transmission arm 94 through the link. As
a result, the auxiliary main axis member 90 is oscillated toward the
front side (direction of moving closer to the main axis member 80) .
When the auxiliary main axis member 90 is oscillated toward the
front side exceeding a predetermined angle, the auxiliary main axis
member 90 makes contact with the,portion (not illustrated) of the
main axis member 80, and thereafter, the auxiliary main axis member
90 is integrally oscillated so as to push the main axis member 80
(in this case, the distal end of the contact arm 84b and the rotation
member 87 are appropriately spaced apart). In other words, when the
auxiliary main axis member 90 is oscillated toward the front side
exceeding a predetermined angle, the main axis member 80 is driven
by the auxiliary main axis member drive cam 91 rather than by the
main axis member drive cam 81.
Next, a description will be made on the configuration for
driving the springboard 40. The power transmitting section 120
includes a springboard drive cam 41, a bearing 42, an oscillation
arm 43, a transmission arm 44, a transmission shaft 45, and a return
spring46asaconfigurationfortransmittingthepowerofthestepping
motor 100 to the springboard 40.
The springboard drive cam 41 is fixed to the cam shaft 105,
similarly to the auxiliary main axis member drive cam 91 and the main
axis member drive cam 81. The oscillation arm 43 is arranged on the
rear side of the springboard drive cam 41, and the rotatable bearing
42 is attached to the middle part of the oscillation arm 43. The
bearing 42 is configuredto appropriatelyrotatewhilemaking contact
with the outer peripheral surface of the springboard drive cam 41.
The distal end of the oscillation arm 43 is coupled, through
arodshapedlink, tothe lower endofthe transmissionarm44 supported
in an oscillating manner at the appropriate position of the power
transmitting section 120. One end of the transmission shaft 45 is
attached to the base of the transmission arm 44, and the other end
of the transmission shaft 45 is fixed to the springboard 40. That
is, the transmission shaft 45 and the springboard 40 are configured
to cooperatively operate. Therefore, the springboard 40 integrally
rotateswiththetransmission arm44. The torsion coil spring shaped
return spring 46 is attached to the transmission arm 44 to bias the
transmission arm 44 in the direction of the arrow of FIG. 3.
With such a configuration, since the distal end of the
transmission arm 44, on which the elastic force of the return spring
46 acts, pulls the oscillation arm 43 through the link, the bearing
42 of the oscillation arm 43 is pushed against the springboard drive
cam 41. Therefore, the return spring 46 generates the spring force
for bringing the springboard drive cam 41 and the bearing 42 into
contact.
When the springboard drive cam 41 rotates in this state and the
peripheral edge of the springboard drive cam 41 (bulged portion to
be described later) pushes the bearing 42, the oscillation arm 43
is moved in the direction of moving away from the cam shaft 105 and
the distal end of the oscillation arm 43 pulls the lower end of the
transmission arm 44 through the link. As a result, the springboard
40 is flipped up toward the front side (see FIG. 6).
Next, a description will be made on the con£ iguration in which
the winder unit 4 receives the yarn supplying bobbin 21, holds the
yarn supplying bobbin 21 at the predetermined position where the yarn
20 of the yarn supplying bobbin 21 is unwound, and discharges the
empty core tube 21a of the yarn supplying bobbin 21. As described
above, in the present embodiment, the springboard drive cam 41, the
main axis member drive cam 81, and the auxiliary main axis member
drive cam 91 are configured as a cam coupling mechanism 130 fixed
tothe cornmoncamshaft105, where three cams 41, 81, glare integrally
driven. Furthermore, the three cams 41, 81, 91 each include a bulged
portion, wherethepositionofthespringboard40, themainaxismember
80, and the auxiliary main axis member 90 can be changed by such a
bulgedportion. Thus, in the present embodiment, the yarn supplying
bobbin 21 can be received, the yarn supplying bobbin 21 can be held,
and the yarn supplying bobbin 21 can be discharged by simply driving
the stepping motor 100 with the drive control section 71, as
illustrated in FIG. 4 to FIG. 6.
Next, a description will be made on the position adjustment
control of the yarn supplying bobbin 21 with reference to FIG. 7 and
FIG. 8. FIG. 8 is a flowchart illustrating processing carried out
in the position adjustment control.
The position adjustment control can be divided into the
processing carried out before winding the yarn 20, and the processing
carried out during the winding of the yarn 20. Such processing will
be hereinafter described along the flowchart, but the processing
illustrated in the flowchart is merely an example, and the content
and the order of processing may be changed.
Hereinafter, a description will be made on the processing
carried out before the winding of the yarn 20. First, the operator
operates the unit input section 18 to give an instruction to shift
to the position adjustment mode. The winder unit 4 shifts to the
position adjustment mode upon receiving such instruction (S101).
The operator then sets theyarnsupplyingbobbin21 (or the core
tube 21a) in the bobbin holding section 110. The operator then
o p e r a t e s t h e u n i t i n p u t s e c t i o n l 8 t o a d j u s t t h e p o s i t i o n o f t h e b o b b i n
holding section110. Specifically, when receiving an instruction to
swing the bobbin holding section 110 toward the rear side (or the
front side), the drive control section 71 transmits a pulse to the
stepping motor 100 in accordance with the received instruction. The
stepping motor 100 is thereby driven, and the position (angle,
posture) of the bobbin holding section 110 (i.e., yarn supplying
bobbin 21) can be changed (S102).
The operator adjusts the position of the yarn supplying bobbin
21 in the manner to coincide the center of the yarn supplying bobbin
21 and the center of the regulating member 27. When the operator
determines that the centers are coincided, the operator pushes the
decisionkey (confirmkey) o f t h e u n i t i n p u t s e c t i o n 1 8 . Theposition
ofthebobbinholding section110 alignedinthemannerishereinafter
referredtoasatargetposition. Thedrivecontrolsection71accepts
theconfirmationofthetargetpositionwhenthedecisionkeyispushed
(S103).
The drive control section 71 then drives the stepping motor 100
to move the bobbin holding section 110 from the target position to
the originposition (S104). In this case, anumber-of-pulse counting
section 74 (FIG. 7) of the winder unit 4 counts the number of pulses
necessary for the bobbin holding section 110 to move from the target
position to the origin position (S104).
Thedrivecontrolsection71storesthenumberofpulses (actual
measurement command value) counted by the number-of-pulse counting
section 74 in a number-of-pulse storage section 73 (command value
storage section, see FIG. 7) of the winder unit 4 (S105). In this
case, the number-of-pulse counting section 74 stores the number of
pulses and the type of yarn supplying bobbin 21 held by the bobbin
holding section 110 in correspondence with each other. This is
because the target position changes according to the inner diameter
of the yarn supplying bobbin 21, and the like. Therefore, when using
a plurality of yarn supplying bobbins 21 having different inner
diameters, for example, the processing indicated in S102 to S105 is
preferably carried out for every yarn supplying bobbin 21.
After carrying out the processing indicated in S102 to S105 for
the necessary yarn supplying bobbin 21, the operator operates the
unit input section 18 to instruct the termination of the position
adjustment mode . The drive control section 71 terminates the
position adjustment mode upon receiving the instruction of the
operator (S106) .
The originpositionofthebobbinholding section110 is defined
by the magnet sensor 72, but since a shift sometimes occurs in the
attachment positionof the power transmitting section120, themagnet
sensor 72 and the like, the origin position may differ slightly for
every winder unit 4 . Therefore, the processing described above is
preferably carried out for every winder unit 4.
Next, a description will be made on the processing carried out
by the drive control section 71 during the winding of the yarn 20
based on the number of pulses stored in the number-of-pulse storage
section 73.
When the yarn supplying bobbin 21 is supplied to the yarn
supplying section 10 during the winding of the yarn 20, the drive
control section 71 detects the supply of the yarn supplying bobbin
21 with signals from a sensor (not illustrated), the unit control
section of the winder unit 4, and the like (S201).
When detecting the supply of the yarn supplying bobbin 21, the
drive control section 71 rotates the stepping motor 100 to the origin
based on a detection signal from the magnet sensor 72. The bobbin
holding section110 is therebymovedto the originposition specified
by the magnet sensor 72 (S202).
The drive control section 71 can also grasp the type of yarn
supplying bobbin 21 currently being used based on the signals
transmittedfromthemachinecontroldevice7, andthe like. Thedrive
control section 71 reads out the number of pulses (actual measurement
commandvalue) correspondingtotheyarnsupplyingbobbin21currently
being used based on the type of yarn supplying bobbin 21 currently
being used, and the storage content of the number-of-pulse storage
section 73. The drive control section 71 then transmits the pulse
to the stepping motor 100 by the read number of pulses to rotate the
stepping motor 100. The bobbin holding section 110 then can be moved
to the target position obtained above (S203).
According to the processing described above, even in the winder
unit 4 that does not include a sensor for detecting the position of
the yarn supplying bobbin 21, the yarn supplying bobbin 21 can be
moved to an appropriate position . Furthermore, the drive control
section 71 of the present embodiment has a configuration of
automatically switching the number of pulses according to the type
of yarn supplying bobbin 21 currently being used, so that the trouble
of the user to select the number of pulses can be omitted.
As described above, the automatic winder 1 of the present
embodimentincludesthebobbinholdingsection110, the steppingmotor
100, the drive control section 71, the magnet sensor 72, and the
number-of-pulse counting section 74. The bobbin holding section 110
holds the yarn supplying bobbin 21. The stepping motor 100 drives
the bobbin holding section 110. The drive control section 71 sends
the command value (number of pulses) to the stepping motor 100 to
control the drive of the stepping motor 100. The magnet sensor 72
specifies the origin position, which is the reference position of
thebobbinholding section110. Thenumber-of-pulse counting section
74 obtains the command value (number of pulses) necessary for moving
the bobbin holding section 110 from the origin position to the target
position as the actual measurement command value.
The difference between the origin position and the target
position of the bobbin holding section 110 thus can be obtained as
the actual measurement command value. With the use of the actual
measurement command value, the position of the yarn supplying bobbin
21 can be accurately aligned even in a textile machine that does not
include a sensor for detecting the position or the posture of the
yarn supplying bobbin 21.
Furthermore, intheautomaticwinder1ofthepresentembodiment,
when the yarn supplying bobbin 21 is supplied, the drive control
section 71 drives the stepping motor 100 to move the bobbin holding
section 110 to the origin position, and drives the stepping motor
100 byanamountcorrespondingtotheactualmeasurementcommandvalue
from the origin position to move the bobbin holding section 110 to
the target position.
The bobbin holding section 110 is thus moved to the origin
position and then moved to the target position, so that the bobbin
holding section can be moved to the target position regardless of
thepositionofthebobbinholding section110whentheyarnsupplying
bobbin 21 is supplied.
Furthermore, the automatic winder 1 of the present embodiment
includes the number-of-pulse storage section 73 for storing a
plurality of actual measurement command values (in correspondence
with the type of yarn supplying bobbin 21) . The stepping motor 100
switches the actual measurement command value for moving the bobbin
holding section 110 from the origin position to the target position
in accordance with the received instruction.
Since the plurality of actual measurement command values are
stored in accordance with the inner diameter of the yarn supplying
bobbin 21, for example, even if the yarn supplying bobbin 21 to wind
is changed, the winding of the yarn 20 can be started without
re-measuring the actual measurement command value.
Next, a description will be made on a variant of the embodiment
described above with reference to FIG. 9 to FIG. 12. FIG. 9 is a
schematic side view of a winder unit according to a variant. FIG.
10 to FIG. 12 are plan views each illustrating states of the yarn
supplying section, the transport guide, and the like. In the
description of the present variant, the same reference numerals are
denoted in the drawings on the members same as or similar to those
in the embodiment described above, and the description thereof may
be omitted.
The automatic winder 1 of the embodiment described above has
a configuration including a magazine type bobbin supplying device.
The automatic winder of the present variant, on the other hand,
includes a transport tray type bobbin supplying device 200. The
automatic winder of the variant includes a bobbin transporting path
configured by a belt conveyor, and the like, where the yarn supplying
bobbin 21 can be supplied to the winder unit 4 by moving a transport
tray 19 mounted with the yarn supplying bobbin 21 along the bobbin
transporting path.
As illustrated in FIG. 10, the bobbin transporting path is
configuredbya supplying conveyor 50 for transporting the transport
tray 19 mounted with the yarn supplying bobbin 21 to each winder unit
4, and a collecting conveyor 51 for collecting the transport tray
19 discharged from each winder unit 4. The supplying conveyor 50 is
arranged on the rear side of the winder unit 4, and the collecting
conveyor 51 is arranged on the front side of the winder unit 4.
The yarn supplying section 10 of the present variant mainly
includes a passage panel 52, a turn table 53, and a transport guide
(bobbin hoiding section) 54.
The passage panel 52 is disposed substantially horizontally,
and arranged above the transportation surfaces of the supplying
conveyor 50 and the collecting conveyor 51. The passage panel 52 is
formed with a tray passage 55 for connecting the supplying conveyor
50 and the collecting conveyor 51.
The transport tray 19 transported on the supplying conveyor 50
is sequentiallyretrievedtothetraypassage 55. The transport tray
19 retrieved to the tray passage 55 is guided along the tray passage
55 (seeFIG.10). Inthe followingdescription, thedirectioninwhich
the transport tray 19 is transported from the supplying conveyor 50
to the collecting conveyor 51 in the tray passage 55 is referred to
as a transporting direction. In the present embodiment, the
transporting direction is a substantially front and back direction
(substantially up and down direction in FIG. 10) of the apparatus.
The turn table 53 is arranged below the passage panel 52 at an
entrance portion of the tray passage 55. As illustrated in FIG. 12,
the turn table 53 has a circular plate shape, and has a substantially
horizontal upper surface. The turn table 53 is configured to be
rotatably driven in one direction (counterclockwise direction) by
a drive force of the stepping motor 100 through the cam mechanism
58 and the one-way clutch 59. The transport tray 19 retrieved into
the tray passage 55 is placed on the turn table 53, and transported
towards a downstream in the tray passage 55 by the rotation of the
turn table 53.
The transport guide 54 for stopping the transport tray 19
transported by the turn table 53 is arranged in a middle of the tray
passage 55. The transport guide 54 includes a lock portion 54a that
makes contact with the transport tray 19 transported through the tray
passage 55. As illustrated in F I G . 11, a configuration of stopping
the transport tray 19 by bringing the lock portion 54a into contact
with the transport tray 19 transported by the turn table 53 from the
downstream in the transporting direction is provided. The transport
guide 54 is configured to be rotatably driven in the clockwise
direction or the counterclockwise direction by the drive force of
the stepping motor 100 through the cam mechanism 58.
The winder unit 4 includes the magnet sensor 72 for defining
the origin of the stepping motor 100. Hereinafter, similar to the
embodiment described above, the rotation position of the stepping
motor 100 of when the magnet sensor 72 transmits the detection signal
is referred to as the origin, and the position of the transport guide
54 of when the stepping motor 100 is at the origin is referred to
as the origin position. The magnet sensor 72 may be attached to the
transport guide 54, or may be attached to the cam mechanism 58, for
example.
The yarn supplying section 10 includes a swing member 57
configured to swing with the supporting shaft 56 as the center. The
swing member 57 is such that a biasing member (not illustrated) is
arranged in the swing member 57 to bias the swing member 57 in the
clockwise direction in F I G . 11. In order to prevent the swing member
57 fromswingingendlesslybythebiasing forceof thebiasingmember,
a stopper that makes contact with the swing member 57 is arranged
on the passage panel 52.
As illustrated in F I G . 11, a contacting portion 54c of the
transport guide 54 pushes the transport tray 19 so as to push against
the swingmember 57toholdtheyarnsupplyingbobbin21. In thewinder
unit 4 of the variant, the unwinding of the yarn 20 is carried out
withthepositionoftheyarnsupplyingbobbin21 fixed in this manner.
In the present embodiment, the origin position is set to a position
where the contacting portion 54c pushes the transport tray 19 against
the swing member 57.
As describedabove, since thedrive c o n t r o l s e c t i o n 7 1 c o n t r o l s
the stepping motor 100, the transport guide 54 can be swung in the
clockwise direction or the counterclockwise direction. A case in
which the transport guide 54 is slightly swung in the clockwise
direction from the state of FIG. 11 will now be considered. In this
case, the contacting portion 54c of the transport guide 54 slightly
moves toward the upstream in the transporting direction. The swing
member 57 pushes the transport tray 19 by the biasing force of the
biasing member. As a result, the transport tray 19 held by
thetransport guide 54 ispushedbythe swingmember 57 andmovedtoward
the upstream in the transporting direction.
A case in which the transport guide 54 is slightly swung in the
counterclockwise direction from the state of FIG. 11 will now be
considered. Inthis case, thecontactingportion54cofthetransport
guide 54 slightly moves toward the downstream in the transporting
direction of the transport tray 19. In this case, the transport tray
19 is pushed toward the downstream in the transporting direction to
overcome the biasing force of the swing member 57 (push away the swing
member 57) with the force received from the contacting portion 54c.
As a result, the transport tray 19 held by the transport guide 54
ispushedbythecontactingportion54c andmovedtowardthedownstream
in the transporting direction.
Thus, the position of the transport tray 19 (position of the
yarn supplying bobbin 21) can be adjusted by driving the stepping
motor 100 according to the control of the drive control section 71
to rotate the transport guide 54. The position adjustment control
similar to the embodiment described above thus can be carried out.
Specifically, the operator shifts the winder unit 4 to the
position adjustment mode. The operator then operates the unit input
section 18 to rotate the transport guide 54, and aligns the center
of the yarn supplyingbobbin21andthe center of the regulatingmember
27. The operator confirms the position where the centers are
coincided as the target position of thetransport guide 54. The drive
control section 71 returns the transport guide 54 from the target
position to the origin position specified by the magnet sensor 72.
In this case, the number-of-pulse counting section 74 counts the
number of pulses necessary to return the transport guide 54 to the
originposition. The drive control section 71then stores the counted
number of pulses in the number-of-pulse storage section 73.
When the yarn supplying bobbin 21 is newly supplied during the
winding of the yarn 20, the drive control section 71 drives the
stepping motor 100 and moves (rotates) the transport guide 54 to the
origin position specified by the magnet sensor 72. Thereafter, the
drive control section 71reads out thenumber of pulses corresponding
to the yarn supplying bobbin 21 currently being used based on the
storage content ofthenumber-of-pulse storage section73. The drive
control section 71 then transmits the pulses to the stepping motor
100 by the read number of pulses to rotate the transport guide 54.
The transport guide 54 then can be moved to the target position
obtained above.
Accordingtotheprocessingdescribedabove, even in thewinder
unit 4 that does not include a sensor for detecting the position of
the yarn supplying bobbin 21, the yarn supplying bobbin 21 can be
moved to an appropriate position.
When the yarn 20 is unwound from the yarn supplying bobbin 21
and the yarn supplying bobbin 21 becomes empty (state in which the
yarn is not wound around the yarn supplying bobbin 21), the yarn
supplying section 10 discharges the transport tray 19 mounted with
the empty yarn supplying bobbin 21 and supplies the transport tray
19 mounted with a new yarn supplying bobbin 21.
Specifically, when detection is made that the yarn supplying
bobbin 21 is empty, a bobbin change signal is transmitted to the drive
control section 71. The drive control section 71 that has received
the bobbin change signal appropriately controls the stepping motor
100 to swing the transport guide 54 in the clockwise direction from
the state of FIG. 10 through the cam mechanism 58.
Thus, as illustrated in FIG. 11, the transport tray 19 held by
the swing member 57 up to this point is released, and the relevant
transport tray 19 is pushed out toward the collecting conveyor 51
by a pushing portion 54b formed in the transport guide 54. The
transport tray 19 pushed out to the collecting conveyor 51 is
transported and collected by the collecting conveyor 51. At the same
time, one of the transport trays 19 stopped by the lock portion 54a
of the transport guide 54 is retrieved toward the downstream in the
transporting direction.
Thereafter, thedrivecontrolsection71appropriatelycontrols
the stepping motor 100 to swing the transport guide 54 in the
counterclockwise direction from the state of FIG. 11 through the cam
mechanism58. Since thepositionofthe transport guide 54 is thereby
returned to the state of FIG. 10, the retrieved new transport tray
19 is held by the transport guide 54, and the transport tray 19 more
on the upstream in the transporting direction is again stopped by
the lock portion 54a.
With the above configuration, each winder unit 4 of the
transport tray type automatic winder can wind the yarn 20 unwound
from the yarn supplying bobbin 21 around the winding bobbin 22 to
form the package 29 having a predetermined length. Furthermore,
since the position adjustment control is carried out, even in the
w i n d e r u n i t 4 t h a t d o e s n o t i n c l u d e a s e n s o r fordetectingtheposition
of the yarn supplying bobbin 21, the yarn supplying bobbin 21 can
be moved to an appropriate position.
The suitable embodiment and variant of the present invention
have been described above, but the above-described configuration may
be modified as below.
In the embodiment described above, the drive control section
71 automatically selects the number of pulses corresponding to the
yarn supplying bobbin 21 currently being used among the plurality
of numbers of pulses stored in the number-of-pulse storage section
73. The drive control section 71 may have a configuration of using
the number of pulses selected by the operator among the plurality
of number of pulses stored in the number-of-pulse storage section
73. In place of the configuration of storing the number of pulses
in correspondence with the yarn supplying bobbin 21, a configuration
of storing the number of pulses in correspondence with the type of
transport tray 19 may be adopted.
The drive section is not limited to the stepping motor 100, and
other devices (servo motor, etc.) that can adjust the drive amount
may be used.
The origin sensor is not limited to the magnet sensor 72, and
other devices (limit switch, etc.) that can specify the origin
position may be used.
The magazine type bobbin supplying device 60 is not limited to
the configuration of the embodiment described above as long as it
can supply the yarn supplying bobbin 21 to a predetermined position
where the yarn 20 is unwound. For example, a column-shaped
accommodationmember capable of loadingandaccommodatingaplurality
of yarn supplying bobbins 21 may be arranged, and the yarn supplying
bobbin 21 may be supplied from the accommodation member.
In the embodiment and the variants described above, the tubular
regulating member 27 is used in the unwinding assisting device 12,
but instead, the regulating member 27 having various shapes such as
a plate member with a guide hole, a linear guide member molded with
a wire or the like, a polygonal column shaped member, and the like
can be used.
The present invention can also be applied to other textile
machines as long as it has a configuration of unwinding the yarn wound
around the yarn supplying bobbin and winding the same.
The difference between the origin position and the target
position of the bobbin holding section thus can be obtained as the
actual measurement value. With the use of the actual measurement
commandvalue, even in atextilemachine that doesnot include asensor
for detectingthepositionof the yarn supplyingbobbin, the position
of the yarn supplying bobbin can be accurately aligned.
In the textile machine described above, preferably, when the
yarnsupplyingbobbinis supplied, the drive control section controls
the drive section to move the bobbin holding section to the origin
position, and drives the drive section by an amount corresponding
to the actual measurement command value from the origin position to
move the bobbin holding section to the target position.
The bobbin holding section is thus moved to the origin position
and then moved to the target position, so that the bobbin holding
sectioncanbemovedtothetargetpositionregardless ofthe position
of the bobbin holding section when the yarn supplying bobbin is I *@ supplied.
In the textilemachine describedabove, a commandvalue storage
section adapted to store the actual measurement command value is
5 preferably arranged.
Since a plurality of actual measurement command values are
stored in accordance with the inner diameter of the yarn supplying
bobbin, for example, even if the yarn supplying bobbin to unwind is
changed, the winding of the yarn can be started without re-measuring
1 10 the actual measurement command value. I
I
I The textile machine described above preferably has the
I
I
i following configuration. In other words, a plurality of winding
units, each having the bobbin holding section is arranged. The
command value measuring section obtains the actual measurement
15 command value for every winding unit.
Since the actual measurement command value differs for every
! winding unit, the yarn supplying bobbins of all winding units can
I be moved to an appropriate position by obtaining the actual
measurement command value in the above manner.
20 The textile machine described above preferably has the
following configuration. In other words, the textile machine
includes amagazine type bobbin supplying device. The drive control
sectioncanadjustanangleatwhichthesuppliedyarnsupplyingbobbin
is held by the bobbin holding section.
25 The unwinding of the yarn can be carried out with the supplied
yarn supplying bobbin fixed at an appropriate angle.
The textile machine described above preferably has the
following configuration. In other words, the textile machine
includes a transport tray type bobbin supplying device. The drive
30 control section enables the bobbin holding section to adjust a
position of stopping a transport tray on which the yarn supplying
bobbin is mounted.
The unwinding of the yarn can be carried out with the transport
tray (yarn supplying bobbin) fixed at an appropriate position.
3 5 In the textile machine described above, the drive section is
preferably a stepping motor.
Since the number of pulses can be used as the command value,
the position control can be easily carried out.
The textile machine described above preferably has the
5 following configuration. In other words, the command value is the
numberofpulsestransmittedtodri~ethes teppingmotor. Thecommand
valuemeasuring section is anumber-of-pulse counting sectionadapted
to count the number of pulses.
Thus, the actual measurement command value can be obtained by
10 simplycountingthenumberofpulses, wherebytheprocessingperformed
by the command value measuring section can be simplified.
In the textile machine described above, the origin sensor is
preferably a magnet sensor.
Thus, the origin position of the bobbin holding section can be
15 specified with an inexpensive and simple configuration.

WE CLAIMS
1. A textile machine characterized by comprising:
a bobbin holding section adapted to hold a yarn supplying
bobbin;
a drive section adapted to drive the bobbin holding section;
a drive control section adapted to send a command value to the
drive section to control drive of the drive section;
an origin sensor adapted to specify an origin position, which
is a reference position of the bobbin holding section; and
a commandvaluemeasuring sectionadaptedto obtain the command
valuenecessary for moving thebobbinholding section fromthe origin
position to a target position as anactual measurement commandvalue.
2. The textile machine according to claim 1, wherein
when the yarn supplying bobbin is supplied, the drive control
section controls the drive section to move the bobbin holding section
to the origin position, and drives the drive section by an amount
corresponding tothe actualmeasurement commandvalue fromthe origin
position to move the bobbin holding section to the target position.
3. Thetextilemachineaccordingtoclaim2, further comprising
a command value storage section adapted to store the actual
measurement command value.
4. The textile machine according to any one of claims 1 to 3,
further comprising
a plurality of winding units, each having the bobbin holding
section, wherein
the command value measuring section obtains the actual
measurement command value for each of the winding units.
5 . The textile machine according to any one of claims 1 to 4,
further comprising
a magazine type bobbin supplying device, wherein
the drive control sectionadjusts anangle at whichthe supplied
*@ yarn supplying bobbin is held by the bobbin holding section.
6. The textile machine according to any one of claims 1 to
5 4, further comprising
a transport tray type bobbin supplying device, wherein
the drive control section enables the bobbin holding section
to adjust a position of stopping a transport tray, on which the yarn
supplying bobbin (21) is mounted.
10
7. The textile machine (1) according to any one of claims 1
to 6, wherein
the drive section (100) is a stepping motor (100).
15 8. The textile machine (1) according to any one of claims 1
to 7, wherein
the command value is the number of pulses transmitted to drive
the stepping motor (loo), and
the command value measuring section (74) is a number-of-pulse
20 counting section (74) adapted to count the number of pulses.
9. The textile machine (1) according to any one of claims 1
to 8, wherein the origin sensor (72) is a magnet sensor (72).
25 10. Method for operating a textile machine (1)comprising:
a bobbin holding section (54; 110) adapted to hold a yarn
supplying bobbin (21);
a drive section (100) adapted to drive the bobbin holding
section (54; 110); characterized by the following steps:
30 specifying an origin position, which is a reference position
of the bobbin holding section (54; 110); and
measuring the command value necessary for moving the bobbin
holding section (54; 110) fromtheoriginpositiontoatargetposition
and using it as an actual measurement command value;
3 5 controlling thedrive section (100) by sending the commandvalue
to the drive section (100).
11. The method according to claim 10, characterized by the
step of controlling the drive section (100) to move the bobbin
holding section (54; 110) to the origin position, and driving the
drive section (100) by an amount corresponding to the actual
measurement commandvalue fromthe originposition tomove the bobbin
holding section (54; 110) to the target position
when the yarn supplying bobbin (21) is supplied.
12. The method according to claim 11, characterized by
storing the actual measurement command value in a command value
storage section (73) .
13. The method according to any one of claims 10 to 12,
for a textile machine (1) with a plurality of winding units (4) ,
each having a bobbin holding section (54; 110), characterized by
obtaining the actual measurement command value for each of
the winding units (4 ) .
14. The method according to any one of claims 10 to 13, for
a textile machine (1) with a magazine type bobbin supplying device
(60) , characterized by adjusting an angle at which the supplied yarn
supplying bobbin (21) is held by the bobbin holding section (110).
15. The method according to any one of claims 10 to 13, for
a textile machine with a transport tray type bobbin supplying device
(200) , characterized by adjusting a position of stopping a transport
tray, on which the yarn supplying bobbin (21) is mounted.
16. The method according to any one of claims 10 to 15,
wherein
the command value is the number of pulses transmitted to drive
the stepping motor (loo), and
as a command value measuring section (74) a number-of-pulse
counting section (74)is used to count the number of pulses.
17. Atextilemachine, substantially as hereindescribedwith
5 reference to accompanying drawings and examples.
18. Method for operating a textile machine, substantially as
herein described with reference to accompanying d wings and
examples.
10 9r"/ '
Dated this 18'~D ay of September 2013 &
Of Anand And Anand Advocates
Agent for the Applicant