EP1475341B1 - Automatic winder - Google Patents
Automatic winder Download PDFInfo
- Publication number
- EP1475341B1 EP1475341B1 EP20040007589 EP04007589A EP1475341B1 EP 1475341 B1 EP1475341 B1 EP 1475341B1 EP 20040007589 EP20040007589 EP 20040007589 EP 04007589 A EP04007589 A EP 04007589A EP 1475341 B1 EP1475341 B1 EP 1475341B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- pawl
- yarn
- holding means
- holding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 29
- 238000007599 discharging Methods 0.000 claims description 28
- 230000007423 decrease Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/02—Methods or apparatus in which packages do not rotate
- B65H49/04—Package-supporting devices
- B65H49/06—Package-supporting devices for a single operative package
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present invention relates to an automatic winder according to the preamble of claim 1.
- the holding means comprises a supplying bobbin insertion pin rotatably supported and pivotable chute flaps and a centering flap engaging the outer layer of a yarn supplying bobbin falling down from the magazine.
- the supplying bobbin In the unwinding position the supplying bobbin is inclined from the vertical direction, but the yarn is drawn out in the direction of the axis of the bobbin so as to be appropriately unwound. Since the bobbin is held in the inclined posture, the axial direction is inclined. Thus, the yarn runs from the bobbin to a traverse drum located at the top while being bent. When the yarn path is bent, the yarn contacts with guides or the like on the yarn path while being bent. This contact resistance is accumulated in the yarn. Furthermore, as the amount of yarn in a bobbin decreases, unwinding tension increases rapidly regardless of the shape of the yarn path. Specifically, if the yarn path is bent, the load on the yarn increases, so that the tension breakage of the yarn is likely to occur. The yarn may undergo more damage to increase the amount of fluffs generated. Accordingly, the speed at which the yarn is wound is limited in order to prevent the tension breakage and the increase in the amount of fluffs.
- JP-U-6 020 366 is disclosed an automatic winder wherein the holding means comprise a first and a second pawl supported on a shaft.
- the first pawl is fixed and the second pawl is pivotably supported to be moved between a closed and an open position.
- the two pawls that are inserted in the tube of a supplying bobbin can fulfill the holding and pivoting function of the supplying bobbin by two movements of the pawls, namely the relative movement to open and close the pawls and the common movement to pivot them and the supplying bobbin between the bobbin receiving position, the winding position and the discharging position.
- Such an arrangement results in less components necessary, in less space occupied, in a simpler controlling and the possibility to easily adjust the holding device to different magazines and types of supplying bobbins, while holding the bobbin during the winding operation in such a posture as sets the axis of the bobbin to extend in a vertical direction and makes a yarn path of a yarn unwound from the bobbin a straight line.
- the automatic winder according to the present embodiment is composed of a large number of winding units 1 arranged in line and a control device for the winding units 1, 1, ...
- one winding unit 1 corresponds to each spindle.
- the direction in which the winding units 1 are arranged in line using the control device side as a reference corresponds to the direction in which the reader views the automatic winder from its front.
- a holding device 3 for bobbins 4 is provided at the bottom of a frame 2 of the winding unit 1. Yarn supplying bobbins 4 are held in the holding device 3. A yarn Y is unwound and drawn upward from the bobbin 4. The yarn Y is wound into a winding package 14 via a traverse drum 13 provided at the uppermost position of the frame 2.
- Various devices are arranged on a yarn path extending from the bobbin 4 to the winding package 14. These devices include a balloon controller 6, a guide plate 10, a disk or gate type tenser 7 that applies a predetermined tension to the yarn Y, and a slab catcher 8 that detects a defect in a yarn Y.
- a splicer 15 is provided at a side of the yarn path to carry out yarn splicing.
- an upper yarn on the package 14 side is guided by a suction mouth 16 to the splicer 15.
- a lower yarn on the bobbin 4 side is guided by a suction pipe 17.
- the winding unit 1 is provided with a magazine type bobbin housing device 20 as a source of yarn supplying bobbins 4.
- the bobbin housing device 20 comprises a magazine can 22 that rotates intermittently around a central shaft 21.
- a plurality of housing holes 22a for the bobbins 4 are formed in the magazine can 22 like a magazine.
- a stop plate 23 is fixedly provided around a lower part of the central shaft 21 to prevent the bobbin 4 from inadvertently falling from the bottom of the magazine can 22.
- the stop plate 23 is formed with a through-hole 23a corresponding to one of the plurality of housing holes 22a.
- the bobbin 4 can fall downward through the through-hole 23a. That is, the bobbin 4 is fed by intermittently driving the magazine can 22.
- a bobbin chute 24 is provided in association with the through-hole 23a to guide the bobbin 4 along its falling path.
- the bobbin 4 falls down to the holding device 3 via the bobbin chute 24.
- the bobbin housing device 20 and the bobbin chute 24 are supported by the frame 2.
- the bobbin housing device 20 is located at a side of the frame 2 of each winding unit 1.
- the magazine can 22 takes such a posture as points the housing holes 22a toward the holding device 3 side so that the bobbin 4 falls in a direction inclined from the vertical direction.
- Guide members such as the guide plate 10 are provided on the yarn path as means for guiding the yarn Y. If the yarn path is bent, contact resistance resulting from bending associated with the guide member is accumulated in the yarn Y. In addition, as the amount of yarn Y in the bobbin 4 decreases, unwinding tension increases rapidly regardless of the shape of the yarn path. Thus, if the yarn path is bent, the load on the path increases, so that the tension breakage of the yarn Y is likely to occur. The yarn Y may undergo more damage to increase the amount of fluffs generated. Accordingly, the speed at which the yarn Y is wound is limited in order to prevent the tension breakage and the increase in the amount of fluffs.
- the winding unit 1 is adapted so that the yarn Y extending from the bobbin 4 to the winding package 14 (traverse drum 13) forms an almost straight line.
- the position at which the bobbin 4 is held is set so that the axial direction of the bobbin 4, corresponding to the unwinding direction of the yarn Y, points toward the winding package 14 (traverse drum 13).
- the yarn path formed to extend from the bobbin 4 to the winding package 14 (traverse drum 13) forms an almost straight line.
- the holding device 3 will be described with reference to Figures 2 to 4 .
- the holding device 3 comprises holding means for the bobbin 4 and rotative moving means for the holding means.
- the holding device 3 can hold the bobbin 4 in an inclined posture taken during a fall and adjust the posture of the bobbin 4 so that a winding operation can be appropriately preformed.
- the holding device 3 is provided with a first pawl 31 and a second pawl 32 as the holding means for the bobbin 4.
- the pawls 31, 32 are fixedly provided on rotative moving shafts 33, 34.
- the pawls 31, 32 can be pivoted in a lateral direction.
- the rotative moving shafts 33, 34 are composed of an internal shaft and an external shaft which are concentrically arranged and which can be rotated relative to each other.
- the winding units 1 are arranged in line in a longitudinal direction, while the rotative moving shafts 33, 34 define a lateral direction with respect to the longitudinal direction.
- the first pawl 31 and the second pawl 32 can be independently pivoted.
- the holding and releasing of the bobbin 4 are switched depending on the position to which the second pawl 32 is pivoted with respect to the first pawl 31.
- the pawls 31, 32 are closed.
- the bobbin 4 is dropped onto the holding device 3.
- both pawls 31, 32 point toward the magazine can 20.
- both pawls 31, 32 are inserted into a core tube 4a of the bobbin 4.
- the bobbin 4 is held by opening the pawls 31, 32 to abut both pawls 31, 32 against an inner wall of the core tube 4a (in Figure 2 , the "open" second pawl 32 is shown by an alternate long and two short dashes line). In this manner, the bobbin 4 is positioned and held by the holding device 3.
- the pawls 31, 32 are closed again to release the holding of the bobbin 4 by the pawls 31, 32.
- a pin 31a is fixedly provided on the first pawl 31 at a position where the second pawl 32 can abut against the first pawl 31.
- the pin 31a regulates the rotative movement of the second pawl 32 beyond the first pawl 31.
- the pawls 31, 32 are "closed"
- the second pawl 32 is positioned with respect to the first pawl 31. Accordingly, in the "closed” state, the pawls 31, 32 are always appropriately positioned relative to each other.
- Both first pawl 31 and second pawl 32 can be pivoted. Accordingly, the first pawl 31 and the second pawl 32 can be pivoted while holding the bobbin 4, to change the posture in which the bobbin 4 is held.
- three stopped positions are set for the rotative moving first pawl 31.
- the first pawl 31 is stopped so as to point toward the magazine can 21 (receiving position S).
- the receiving position S of the first pawl 31 is a rotatively moved position at which the holding means receives the bobbin 4 from the bobbin housing device 20.
- the first pawl 31 is stopped so as to point toward the traverse drum 13 (winding package 14) (working position W).
- the working position W of the first pawl 31 is a rotatively moved position at which the holding means holds the bobbin 4 during a winding operation.
- the first pawl 31 is stopped so as to point toward the outside of the magazine can 21 (discharging position E).
- the bobbin 4 is discharged to a side of the frame 2.
- the second pawl 32 can be pivoted with respect to the first pawl 31. It is thus possible to hold or release the bobbin 4 regardless of the stopped position of the first pawl 31.
- the bobbin 4 held by both pawls 31, 32, when the first pawl 31 is rotatively moved to the working position W, the bobbin 4 is pointed toward the traverse drum 13 while remaining held (winding package 14). Then, when a winding operation is started in this state, the tension breakage or the increase in the amount of fluffs can be prevented.
- the case in which the first claw 31 is at the discharging position E will be described later when a discharging device 9 is described.
- the holding means for the bobbin 4 is composed of the first pawl 31, the second pawl 32, and the rotative moving shaft 34, which rotatively moves the second pawl 32 with respect to the first pawl 31.
- the holding means can hold and release the bobbin 4.
- means for rotatively moving the holding means there are provided the rotative moving shaft 33, which rotatively moves the first pawl 31, and the rotative moving shaft 34, which rotatively moves the second pawl 32 in unison with the first pawl 31.
- the holding means can change the posture of the bobbin 4 held by the holding means.
- the posture of the bobbin 4 during the fall can be changed so that it can be held in a different posture. Then, by holding the bobbin 4 so that the yarn path of the yarn Y unwound from the bobbin 4 forms a straight line (the axis of the bobbin 4 extends in the vertical direction), it is possible to prevent the tension breakage or the increase in the amount of fluffs.
- the holding means for the bobbin 4 and the rotative moving means for the holding means are simultaneously constituted simply by providing the holding device 3 with the pair of pawl members composed of the first pawl 31 and the second pawl 32 so that the pawls can be pivoted.
- the simple device configuration can be used to hold the bobbin and to adjust the posture of the bobbin.
- the discharging device 9 will be described with reference to Figures 2 to 4 .
- the discharging device 9 for the bobbin 4 is located at the bottom of the frame 2 adjacent to the holding device 3.
- the discharging device 9 removes the empty bobbin 4 from which all the yarn Y has been unwound, and then discharges it to a side of the frame 2. Once the unwanted bobbin 4 is removed from the holding device 3, the new yarn supplying bobbin 4 is supplied to the holding device 3.
- the discharging device 9 is provided with a discharging plate 25 and a rotative moving shaft 26 that rotatively moves the discharging plate 25.
- the discharging plate 25 is formed to appear concave in a plan view (not shown in the drawings).
- the discharging plate 25 has a recess portion 25a through which the first pawl 31 and the second pawl 32 can escape. This prevents the discharging plate 25 from contacting with the pawls 31, 32.
- the pawls 31, 32 and the discharging plate 25 can be arranged so as to appear superimposed on one another in a front view. Except during the discharge of the empty bobbin 4, the discharge plate 25 is stopped so as to incline toward the frame 2. Consequently, the discharge plate 25 does not contact with the core tube 4a of the bobbin 4.
- the bobbin chute 24 is provided with the arrangements described below.
- a bottom guide 24b is provided at the bottom of the bobbin chute 24 so as to be pivotable with respect to a main body 24a of the bobbin chute 24.
- the bottom guide 24b normally (except during the discharge of the empty bobbin 4) takes a posture in which it lies along the falling path of the bobbin 4 which extends from the magazine can 22 to the holding device 3. It is assumed that in this posture, the bottom guide 24b is located at a guide position. On this occasion, the bottom guide 24b functions as a guide for the falling path of the bobbin 4. Furthermore, while the empty bobbin 4 is being discharged, the bottom guide 24b takes a posture in which it lies offset from the falling path of the bobbin 4 extending from the magazine can 22 to the holding device 3.
- the bottom guide 24 points in the vertical direction. It is assumed that in this posture, the bottom guide 24b is at a guide stopping position. In this case, the bottom guide 24b does not function as a part of the falling path of the bobbin 4.
- the first pawl 31 is rotatively moved to the discharging position E and then stopped.
- the second pawl 32 operates in unison with the first pawl 31 in order to keep holding the empty bobbin 4.
- the second pawl 32 is rotatively moved to "close" the pawls 31, 32 to release the bobbin 4.
- a bottom portion of the bobbin chute 24 is opened so that the bobbin 4 on the holding device 3 can be discharged to the outside (toward the right end of the figure) of the frame 2.
- the bottom guide 24b pivots from the guide position to the guide stopping position.
- the discharging plate 25 stopped so as to incline toward the frame 2 rotatively moves toward the outside of the frame 2.
- the discharging plate 25 thus abuts against a bottom surface of the core tube 4a to push the bobbin 4 to the outside of the frame 2. In this manner, the empty bobbin 4 is discharged from the winding unit 1.
- the bobbin chute 24 When the bobbin chute 24 is configured as described above, it is located close to the holding means composed of the pawls 31, 32. This ensures the delivery of the bobbin 4 to the holding means, while preventing the bobbin chute 24 from obstructing the discharge of the empty bobbin 4.
- the configuration of the bobbin chute 24 is not limited to the one in which the bobbin chute 24 is provided with the bottom guide 24b, which can pivot with respect to the main body 24a.
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- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Description
- The present invention relates to an automatic winder according to the preamble of
claim 1. - An automatic winder of this type is known from
DE-A-198 16 188 , also defining the preamble ofclaim 1. The holding means comprises a supplying bobbin insertion pin rotatably supported and pivotable chute flaps and a centering flap engaging the outer layer of a yarn supplying bobbin falling down from the magazine. - In the unwinding position the supplying bobbin is inclined from the vertical direction, but the yarn is drawn out in the direction of the axis of the bobbin so as to be appropriately unwound. Since the bobbin is held in the inclined posture, the axial direction is inclined. Thus, the yarn runs from the bobbin to a traverse drum located at the top while being bent. When the yarn path is bent, the yarn contacts with guides or the like on the yarn path while being bent. This contact resistance is accumulated in the yarn. Furthermore, as the amount of yarn in a bobbin decreases, unwinding tension increases rapidly regardless of the shape of the yarn path. Specifically, if the yarn path is bent, the load on the yarn increases, so that the tension breakage of the yarn is likely to occur. The yarn may undergo more damage to increase the amount of fluffs generated. Accordingly, the speed at which the yarn is wound is limited in order to prevent the tension breakage and the increase in the amount of fluffs.
- In
JP-U-6 020 366 - It is thus the object of the present invention to improve the shape of the yarn path to reduce the load on the yarn to increase the winding speed.
- This object is solved by the features defined in the characterizing portion of
claim 1. - The two pawls that are inserted in the tube of a supplying bobbin can fulfill the holding and pivoting function of the supplying bobbin by two movements of the pawls, namely the relative movement to open and close the pawls and the common movement to pivot them and the supplying bobbin between the bobbin receiving position, the winding position and the discharging position.
- Such an arrangement results in less components necessary, in less space occupied, in a simpler controlling and the possibility to easily adjust the holding device to different magazines and types of supplying bobbins, while holding the bobbin during the winding operation in such a posture as sets the axis of the bobbin to extend in a vertical direction and makes a yarn path of a yarn unwound from the bobbin a straight line.
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Figure 1 is a front view showing a winding unit. -
Figure 2 is a front view showing the lower part of a frame where a first pawl is at a receiving position. -
Figure 3 is a front view showing the lower part of the frame where the first pawl is at a working position. -
Figure 4 is a front view showing the lower part of the frame where the first pawl is at a discharging position. - With reference to the drawings, a description will be given of an embodiment of an automatic winder according to the present invention.
- The automatic winder according to the present embodiment is composed of a large number of
winding units 1 arranged in line and a control device for thewinding units winding unit 1 corresponds to each spindle. In each drawing, the direction in which thewinding units 1 are arranged in line using the control device side as a reference corresponds to the direction in which the reader views the automatic winder from its front. - The configuration of the
winding unit 1 will be described with reference toFigure 1 . - A
holding device 3 forbobbins 4 is provided at the bottom of aframe 2 of thewinding unit 1.Yarn supplying bobbins 4 are held in theholding device 3. A yarn Y is unwound and drawn upward from thebobbin 4. The yarn Y is wound into awinding package 14 via atraverse drum 13 provided at the uppermost position of theframe 2. Various devices are arranged on a yarn path extending from thebobbin 4 to thewinding package 14. These devices include aballoon controller 6, aguide plate 10, a disk orgate type tenser 7 that applies a predetermined tension to the yarn Y, and aslab catcher 8 that detects a defect in a yarn Y. These devices are arranged in this order from thebobbin 4 located at the most upstream position of the yarn path to a downstream side (upward). Asplicer 15 is provided at a side of the yarn path to carry out yarn splicing. During yarn splicing, an upper yarn on thepackage 14 side is guided by asuction mouth 16 to thesplicer 15. A lower yarn on thebobbin 4 side is guided by asuction pipe 17. - The
winding unit 1 is provided with a magazine typebobbin housing device 20 as a source ofyarn supplying bobbins 4. Thebobbin housing device 20 comprises a magazine can 22 that rotates intermittently around acentral shaft 21. A plurality ofhousing holes 22a for thebobbins 4 are formed in the magazine can 22 like a magazine. Astop plate 23 is fixedly provided around a lower part of thecentral shaft 21 to prevent thebobbin 4 from inadvertently falling from the bottom of the magazine can 22. Thestop plate 23 is formed with a through-hole 23a corresponding to one of the plurality ofhousing holes 22a. Thebobbin 4 can fall downward through the through-hole 23a. That is, thebobbin 4 is fed by intermittently driving the magazine can 22. Furthermore, abobbin chute 24 is provided in association with the through-hole 23a to guide thebobbin 4 along its falling path. Thebobbin 4 falls down to theholding device 3 via thebobbin chute 24. Thebobbin housing device 20 and thebobbin chute 24 are supported by theframe 2. - The
bobbin housing device 20 is located at a side of theframe 2 of eachwinding unit 1. The magazine can 22 takes such a posture as points thehousing holes 22a toward theholding device 3 side so that thebobbin 4 falls in a direction inclined from the vertical direction. - A description will be given of the tension breakage of a yarn Y and the generation of fluffs attributed to the shape of the yarn path. The yarn Y unwound from the
bobbin 4 is drawn out in the axial direction of thebobbin 4 so as to be appropriately unwound. Thus, if the winding package 14 (traverse drum 13), into which the yarn Y is wound, is offset from the axial direction of thebobbin 4, the yarn path may be bent.Figure 2 shows the posture of thebobbin 4 during a fall. In a winding unit in which the yarn is unwound from the bobbin maintaining the same posture as that taken during a fall (in contrast to the present embodiment), the axis of the bobbin is inclined. Consequently, the yarn path leading to the traverse drum, located immediately above thebobbin 3, is bent. - Guide members such as the
guide plate 10 are provided on the yarn path as means for guiding the yarn Y. If the yarn path is bent, contact resistance resulting from bending associated with the guide member is accumulated in the yarn Y. In addition, as the amount of yarn Y in thebobbin 4 decreases, unwinding tension increases rapidly regardless of the shape of the yarn path. Thus, if the yarn path is bent, the load on the path increases, so that the tension breakage of the yarn Y is likely to occur. The yarn Y may undergo more damage to increase the amount of fluffs generated. Accordingly, the speed at which the yarn Y is wound is limited in order to prevent the tension breakage and the increase in the amount of fluffs. - To prevent the tension breakage of the yarn Y and the increase in the amount of fluffs, the winding
unit 1 according to the present embodiment is adapted so that the yarn Y extending from thebobbin 4 to the winding package 14 (traverse drum 13) forms an almost straight line. Specifically, the position at which thebobbin 4 is held is set so that the axial direction of thebobbin 4, corresponding to the unwinding direction of the yarn Y, points toward the winding package 14 (traverse drum 13). The yarn path formed to extend from thebobbin 4 to the winding package 14 (traverse drum 13) forms an almost straight line. - The holding
device 3 will be described with reference toFigures 2 to 4 . - The holding
device 3 comprises holding means for thebobbin 4 and rotative moving means for the holding means. The holdingdevice 3 can hold thebobbin 4 in an inclined posture taken during a fall and adjust the posture of thebobbin 4 so that a winding operation can be appropriately preformed. The holdingdevice 3 is provided with afirst pawl 31 and asecond pawl 32 as the holding means for thebobbin 4. Thepawls shafts pawls rotative moving shafts units 1 are arranged in line in a longitudinal direction, while therotative moving shafts - First, a description will be given of how the holding means holds and releases the
bobbin 4. - The
first pawl 31 and thesecond pawl 32 can be independently pivoted. The holding and releasing of thebobbin 4 are switched depending on the position to which thesecond pawl 32 is pivoted with respect to thefirst pawl 31. As shown inFigure 2 , when theyarn supplying bobbin 4 is newly supplied, thepawls bobbin 4 is dropped onto the holdingdevice 3. At this time, bothpawls bobbin 4 falls, bothpawls core tube 4a of thebobbin 4. Thebobbin 4 is held by opening thepawls pawls core tube 4a (inFigure 2 , the "open"second pawl 32 is shown by an alternate long and two short dashes line). In this manner, thebobbin 4 is positioned and held by the holdingdevice 3. When thebobbin 4 from which the yarn Y has been completely unwound for supply is removed from the holdingdevice 3, thepawls bobbin 4 by thepawls - A description will be given of regulating means for positioning the
second pawl 32 with respect to thefirst pawl 31 in the "closed" state. - A
pin 31a is fixedly provided on thefirst pawl 31 at a position where thesecond pawl 32 can abut against thefirst pawl 31. Thepin 31a regulates the rotative movement of thesecond pawl 32 beyond thefirst pawl 31. In this case, if thepawls second pawl 32 abuts against thepin 31a, thesecond pawl 32 is positioned with respect to thefirst pawl 31. Accordingly, in the "closed" state, thepawls - Now, a description will be given of the adjustment of posture of the
bobbin 4 using the rotative moving means of the holding means. - Both
first pawl 31 andsecond pawl 32 can be pivoted. Accordingly, thefirst pawl 31 and thesecond pawl 32 can be pivoted while holding thebobbin 4, to change the posture in which thebobbin 4 is held. In this case, three stopped positions are set for the rotative movingfirst pawl 31. At the first stopped position, as shown inFigure 2 , thefirst pawl 31 is stopped so as to point toward the magazine can 21 (receiving position S). The receiving position S of thefirst pawl 31 is a rotatively moved position at which the holding means receives thebobbin 4 from thebobbin housing device 20. At the second stopped position, as shown inFigures 1 and3 , thefirst pawl 31 is stopped so as to point toward the traverse drum 13 (winding package 14) (working position W). The working position W of thefirst pawl 31 is a rotatively moved position at which the holding means holds thebobbin 4 during a winding operation. At the third stopped position, as shown inFigure 4 , thefirst pawl 31 is stopped so as to point toward the outside of the magazine can 21 (discharging position E). When thefirst pawl 31 is at the discharging position E, thebobbin 4 is discharged to a side of theframe 2. - By setting the holding means at the three rotatively moved positions as described above, it is possible to switch the posture of the
bobbin 4 held by the holding means, to the one suitable for the reception of thebobbin 4, the unwinding of a yarn Y from thebobbin 4, or the discharge of thebobbin 4. - Wherever the
first pawl 31 is stopped, thesecond pawl 32 can be pivoted with respect to thefirst pawl 31. It is thus possible to hold or release thebobbin 4 regardless of the stopped position of thefirst pawl 31. With thebobbin 4 held by bothpawls first pawl 31 is rotatively moved to the working position W, thebobbin 4 is pointed toward thetraverse drum 13 while remaining held (winding package 14). Then, when a winding operation is started in this state, the tension breakage or the increase in the amount of fluffs can be prevented. The case in which thefirst claw 31 is at the discharging position E will be described later when a dischargingdevice 9 is described. - As described above, the holding means for the
bobbin 4 is composed of thefirst pawl 31, thesecond pawl 32, and therotative moving shaft 34, which rotatively moves thesecond pawl 32 with respect to thefirst pawl 31. The holding means can hold and release thebobbin 4. Furthermore, as means for rotatively moving the holding means, there are provided therotative moving shaft 33, which rotatively moves thefirst pawl 31, and therotative moving shaft 34, which rotatively moves thesecond pawl 32 in unison with thefirst pawl 31. The holding means can change the posture of thebobbin 4 held by the holding means. - Thus, in the winding
unit 1, provided in the automatic winder, even if thebobbin housing device 20 is located at a side of theframe 2 and thenew bobbin 4 is supplied by being dropped from an inclined direction, the posture of thebobbin 4 during the fall can be changed so that it can be held in a different posture. Then, by holding thebobbin 4 so that the yarn path of the yarn Y unwound from thebobbin 4 forms a straight line (the axis of thebobbin 4 extends in the vertical direction), it is possible to prevent the tension breakage or the increase in the amount of fluffs. - Furthermore, the holding means for the
bobbin 4 and the rotative moving means for the holding means are simultaneously constituted simply by providing theholding device 3 with the pair of pawl members composed of thefirst pawl 31 and thesecond pawl 32 so that the pawls can be pivoted. Thus, the simple device configuration can be used to hold the bobbin and to adjust the posture of the bobbin. - The discharging
device 9 will be described with reference toFigures 2 to 4 . - The discharging
device 9 for thebobbin 4 is located at the bottom of theframe 2 adjacent to theholding device 3. The dischargingdevice 9 removes theempty bobbin 4 from which all the yarn Y has been unwound, and then discharges it to a side of theframe 2. Once theunwanted bobbin 4 is removed from the holdingdevice 3, the newyarn supplying bobbin 4 is supplied to theholding device 3. - The discharging
device 9 is provided with a dischargingplate 25 and arotative moving shaft 26 that rotatively moves the dischargingplate 25. The dischargingplate 25 is formed to appear concave in a plan view (not shown in the drawings). The dischargingplate 25 has arecess portion 25a through which thefirst pawl 31 and thesecond pawl 32 can escape. This prevents the dischargingplate 25 from contacting with thepawls Figures 2 and3 , thepawls plate 25 can be arranged so as to appear superimposed on one another in a front view. Except during the discharge of theempty bobbin 4, thedischarge plate 25 is stopped so as to incline toward theframe 2. Consequently, thedischarge plate 25 does not contact with thecore tube 4a of thebobbin 4. - To form a discharging path P through which the discharging
deice 9 discharges theempty bobbin 4, thebobbin chute 24 is provided with the arrangements described below. - A
bottom guide 24b is provided at the bottom of thebobbin chute 24 so as to be pivotable with respect to amain body 24a of thebobbin chute 24. Thebottom guide 24b normally (except during the discharge of the empty bobbin 4) takes a posture in which it lies along the falling path of thebobbin 4 which extends from the magazine can 22 to theholding device 3. It is assumed that in this posture, thebottom guide 24b is located at a guide position. On this occasion, thebottom guide 24b functions as a guide for the falling path of thebobbin 4. Furthermore, while theempty bobbin 4 is being discharged, thebottom guide 24b takes a posture in which it lies offset from the falling path of thebobbin 4 extending from the magazine can 22 to theholding device 3. As shown inFigure 4 , in the present embodiment, thebottom guide 24 points in the vertical direction. It is assumed that in this posture, thebottom guide 24b is at a guide stopping position. In this case, thebottom guide 24b does not function as a part of the falling path of thebobbin 4. - A description will be given of an operation of discharging the
empty bobbin 4. - First, the
first pawl 31 is rotatively moved to the discharging position E and then stopped. At this time, thesecond pawl 32 operates in unison with thefirst pawl 31 in order to keep holding theempty bobbin 4. Subsequently, thesecond pawl 32 is rotatively moved to "close" thepawls bobbin 4. At the same time, a bottom portion of thebobbin chute 24 is opened so that thebobbin 4 on the holdingdevice 3 can be discharged to the outside (toward the right end of the figure) of theframe 2. Specifically, thebottom guide 24b pivots from the guide position to the guide stopping position. Then, the dischargingplate 25 stopped so as to incline toward theframe 2 rotatively moves toward the outside of theframe 2. The dischargingplate 25 thus abuts against a bottom surface of thecore tube 4a to push thebobbin 4 to the outside of theframe 2. In this manner, theempty bobbin 4 is discharged from the windingunit 1. - When the
bobbin chute 24 is configured as described above, it is located close to the holding means composed of thepawls bobbin 4 to the holding means, while preventing thebobbin chute 24 from obstructing the discharge of theempty bobbin 4. - The configuration of the
bobbin chute 24 is not limited to the one in which thebobbin chute 24 is provided with thebottom guide 24b, which can pivot with respect to themain body 24a. To form the discharging path P through which the dischargingdevice 9 discharges thebobbin 4, it is possible to use other configurations provided that at least the bottom portion of thebobbin chute 24 can be opened and closed and that in the closed state, a path is formed through which the falling bobbin is guided.
Claims (4)
- An automatic winder comprising a magazine (20) receiving yarn supplying bobbins (4), a holding device with holding means (31, 32) for holding the yarn supplying bobbins, and a bobbin chute (24) that guides a bobbin falling from the magazine (20) to the holding device, and rotative moving means for the holding device, wherein the rotatively moved positions of the holding means include a receiving position (S) at which the holding means receives a bobbin from the magazine (20), a working position (W) at which the holding means holds the bobbin during a winding operation, and a discharging position (E) at which the holding means discharges the bobbin,
characterized in that
the holding device (3) is provided with a first and a second pawl (31, 32) as the holding means for the bobbin (4), said first and second pawl (31, 32) being relatively pivotable supported on concentric shafts (33, 34) to be moved between a closed and an open position, anda) said bobbin receiving position (S) being the position at which the first pawl (31) points toward the magazine (20) and the first and the second pawl (31, 32) are closed,b) said working position (W) being the position at which the first pawl (31) points toward a traverse device (13) of the winder and the first and the second pawl (31, 32) are open, inserted in the tube (4a) of the bobbin (4) and abut against the inner wall of the tube (4a), andc) said discharging position (E) being the position at which the first pawl (31) points in a tube discharging direction and the first and second pawl (31, 32) are closed. - Automatic winder according to claim 1
characterized by
a pin (31 a) on the first pawl (31) against which the second pawl (32) abuts in the closed position. - Automatic winder according to claim 1 or 2,
characterized in that
the shafts (33, 34) are composed of an internal shaft and an external shaft which are concentrically arranged and can be rotated relatively to each other. - Automatic winder according to one of the claims 1 to 3
characterized by
a tube discharging plate (25) having a recess portion (25a) through which the first and the second pawl (31, 32) pass, and being pivotable from a position, at which it does not contact the tube (4a) to a position, at which it abuts a bottom surface of the tube (4a) to discharge the tube (4a).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003123679 | 2003-04-28 | ||
JP2003123679A JP3757950B2 (en) | 2003-04-28 | 2003-04-28 | Automatic winder |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1475341A2 EP1475341A2 (en) | 2004-11-10 |
EP1475341A3 EP1475341A3 (en) | 2005-06-22 |
EP1475341B1 true EP1475341B1 (en) | 2008-04-23 |
Family
ID=32985554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040007589 Expired - Lifetime EP1475341B1 (en) | 2003-04-28 | 2004-03-29 | Automatic winder |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1475341B1 (en) |
JP (1) | JP3757950B2 (en) |
DE (1) | DE602004013215T2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004045747A1 (en) * | 2004-09-21 | 2006-03-23 | Saurer Gmbh & Co. Kg | Shell-type mandrel for an operating site of a cross-winding device comprises a clamping unit having clamping claw groups which can be adjusted in height against the inner wall of a sleeve |
DE102005028760A1 (en) * | 2005-06-22 | 2007-01-04 | Saurer Gmbh & Co. Kg | Cheese winding machine has winding aids and thread guides which can connected to vacuum grippers, lever system catching thread stretched between cop and magazine and feeding it below winding aid to cap it and pass end attached to cop to aid |
JP4492650B2 (en) * | 2007-07-13 | 2010-06-30 | 村田機械株式会社 | Yarn winding device and textile machine |
JP2011006179A (en) * | 2009-06-24 | 2011-01-13 | Murata Machinery Ltd | Yarn winding device |
JP2011241032A (en) * | 2010-05-17 | 2011-12-01 | Murata Machinery Ltd | Winding unit and yarn winding machine equipped with the same |
JP2011241031A (en) * | 2010-05-17 | 2011-12-01 | Murata Machinery Ltd | Take-up unit |
DE102011010989A1 (en) * | 2011-02-11 | 2012-08-16 | Oerlikon Textile Gmbh & Co. Kg | Working premise for cross bobbin, has case ejector swingably supported on sleeve receptacle apparatus such that case ejector ejects empty tube and transfers template coil from transfer position to unwinding position |
CN103010736B (en) * | 2012-11-20 | 2014-12-31 | 中国兵器工业第二一三研究所 | Discharge mechanism of wire harness winding machine |
CN111392504B (en) * | 2020-04-10 | 2021-06-15 | 余斌 | Enameled wire recycling and transferring equipment for communication |
CN112938576B (en) * | 2021-03-10 | 2022-10-21 | 青岛峥嵘精密机械有限公司 | Rolling machine with automatic material tray storage function |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2434987C2 (en) * | 1974-07-20 | 1983-11-17 | W. Schlafhorst & Co, 4050 Mönchengladbach | Device for the axial conveyance of textile bobbins |
DE3514935A1 (en) * | 1985-04-25 | 1986-10-30 | W. Schlafhorst & Co, 4050 Mönchengladbach | WINDING MACHINE |
DE3534267A1 (en) * | 1985-09-26 | 1987-04-09 | Schlafhorst & Co W | REEL OF A WINDING MACHINE |
DE3808957A1 (en) * | 1988-03-17 | 1989-09-28 | Mayer Fa Karl | SPECIAL REELING MACHINE |
DE4322952A1 (en) * | 1993-07-09 | 1995-01-12 | Schlafhorst & Co W | Textile machine producing cross-wound bobbins |
DE19816188A1 (en) * | 1998-04-11 | 1999-10-14 | Schlafhorst & Co W | Winding station of automatic winder for crosswound packages |
-
2003
- 2003-04-28 JP JP2003123679A patent/JP3757950B2/en not_active Expired - Fee Related
-
2004
- 2004-03-29 EP EP20040007589 patent/EP1475341B1/en not_active Expired - Lifetime
- 2004-03-29 DE DE200460013215 patent/DE602004013215T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1475341A2 (en) | 2004-11-10 |
DE602004013215T2 (en) | 2009-05-14 |
JP2004323219A (en) | 2004-11-18 |
EP1475341A3 (en) | 2005-06-22 |
JP3757950B2 (en) | 2006-03-22 |
DE602004013215D1 (en) | 2008-06-05 |
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