EP3686142B1 - Yarn joining device and yarn winding device - Google Patents
Yarn joining device and yarn winding device Download PDFInfo
- Publication number
- EP3686142B1 EP3686142B1 EP19210228.3A EP19210228A EP3686142B1 EP 3686142 B1 EP3686142 B1 EP 3686142B1 EP 19210228 A EP19210228 A EP 19210228A EP 3686142 B1 EP3686142 B1 EP 3686142B1
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- EP
- European Patent Office
- Prior art keywords
- yarn
- yarns
- joining
- yarn joining
- predetermined direction
- 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.)
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- 238000005304 joining Methods 0.000 title claims description 192
- 238000004804 winding Methods 0.000 title claims description 52
- 230000007246 mechanism Effects 0.000 claims description 49
- 230000001629 suppression Effects 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 36
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004753 textile Substances 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
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
- B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
- B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
-
- 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
- B65H67/08—Automatic end-finding and material-interconnecting arrangements
- B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/54—Arrangements for supporting cores or formers at winding stations; Securing cores or formers to driving members
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/70—Other constructional features of yarn-winding machines
-
- 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
-
- 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
- B65H2701/319—Elastic threads
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
- The present invention relates to a yarn joining device and a yarn winding device that includes the yarn joining device.
- For example, a yarn joining device is disclosed in
Japanese Patent Application Laid-Open No. S59-112038 - When the yarn gripped by the clamp is cut by the cutter, the yarn ends are sucked into the untwisting pipes and untwisted by the action of an air current present in the untwisting pipes . Thereafter, the untwisted yarn ends are pulled out from the untwisting pipes, and the yarn ends are joined together in the yarn joining space.
- However, the following problem arises when a yarn having elasticity (hereinafter, "elastic yarn"), such as Core Spun Yarn (CSY), is joined by using the yarn joining device disclosed in
Japanese Patent Application Laid-Open No. S59-112038 - The closest prior art, from which this application departs, is disclosed in
US 2004/0020182 A1 . This document already discloses a yarn joining device comprising a yarn joining nozzle having a yarn joining space extending in a predetermined direction; - two clamps each arranged on either side of the yarn joining nozzle in the predetermined direction for gripping a corresponding yarn;
- two cutters each arranged on either side of the yarn joining nozzle in the predetermined direction for cutting the corresponding yarn;
- two untwisting pipes each having a suction vent arranged between the yarn joining nozzle and the corresponding cutter in the predetermined direction for sucking a yarn end of the corresponding yarn gripped by the corresponding clamp and cut by the corresponding cutter;
- a control section;
- a yarn shrinkage suppression mechanism capable of moving so as to contact the yarns between the suction vents and the yarn joining nozzle in the predetermined direction, wherein the control section is adapted to cause the cutters to cut the yarns while the yarn shrinkage suppression mechanism is in contact with the yarns.
- The present invention has been made in view of the above discussion. One object of the present invention is to provide a yarn joining device that can favorably join even elastic yarns.
- A yarn joining device according to one aspect of the present invention includes a yarn joining nozzle having a yarn joining space extending in a predetermined direction; two clamps each arranged on either side of the yarn joining nozzle in the predetermined direction for gripping a corresponding yarn; two cutters each arranged on either side of the yarn joining nozzle in the predetermined direction for cutting the corresponding yarn; two untwisting pipes each having a suction vent arranged between the yarn joining nozzle and the corresponding cutter in the predetermined direction for sucking a yarn end of the corresponding yarn gripped by the corresponding clamp and cut by the corresponding cutter; a control section; and a yarn shrinkage suppression mechanism capable of moving so as to contact the yarns between the suction vents and the yarn joining nozzle in the predetermined direction. The control section causes the cutters to cut the yarns while the yarn shrinkage suppression mechanism is in contact with the yarns. The yarn shrinkage suppression mechanism is adapted to grip the yarns by sandwiching the yarns between itself and a support member that supports the yarn joining nozzle.
- A yarn winding device according to another aspect of the present invention includes a yarn supplying unit that supplies a yarn; a winding unit that is arranged at a position separated from the yarn supplying unit in the predetermined direction and that winds the yarn supplied from the yarn supplying unit; and the above yarn joining device arranged between the yarn supplying unit and the winding unit in the predetermined direction.
- The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings.
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FIG. 1 is a schematic configuration diagram of an automatic winder according to one embodiment. -
FIG. 2 is a block diagram showing an electrical configuration of the automatic winder according to the present embodiment. -
FIG. 3 is a schematic configuration diagram of a winding unit. -
FIG. 4A is a front view andFIG. 4B is a side view of a yarn joining device immediately after yarns are guided to the yarn joining device. -
FIG. 5 is a perspective view of a structure around an attachment member of yarn shrinkage control levers. -
FIG. 6A is a front view andFIG. 6B is a side view of the yarn joining device just before the yarns are cut by cutters. -
FIG. 7A is a front view andFIG. 7B is a side view of the yarn joining device immediately after the yarns are cut by the cutters. -
FIG. 8A is a front view andFIG. 8B is a side view of the yarn joining device in a state that yarn ends have been introduced into a yarn joining space. -
FIG. 9A is a front view andFIG. 9B is a side view of the yarn joining device while the yarn joining device is joining the yarns. - Exemplary embodiments of the present invention will be explained below with reference to the drawings.
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FIG. 1 is a schematic configuration diagram of an automatic winder according to one embodiment.FIG. 2 is a block diagram showing an electrical configuration of the automatic winder according to the present embodiment. As shown inFIG. 1 , anautomatic winder 1 includes a plurality of winding units (corresponding to a yarn winding device according to the present invention) 2 arranged in one direction, and adoffing device 3 capable of moving freely along the direction of arrangement of thewinding units 2. In the following description, the left-right direction ofFIG. 1 , in which thewinding units 2 are arranged, is referred to as a "left-right direction". Moreover, the direction vertical to the paper on whichFIG. 1 has been printed is referred to as a "front-rear direction" while the side toward the reader is referred to as a "front side" and the side away from the reader is referred to as a "rear side". - In the
automatic winder 1, eachwinding unit 2 forms a package P by unwinding a yarn Y from a yarn supplying bobbin B and winding the yarn Y on a winding tube. When formation of the package P is completed in acertain winding unit 2, thedoffing device 3 moves to a position facing thiswinding unit 2, and replaces the formed package P with an empty winding tube. As shown inFIG. 2 , theautomatic winder 1 includes amain controller 4, a plurality ofunit controllers 5, and adoffing control device 6. Themain controller 4 controls the entireautomatic winder 1 and issues control signals to eachunit controller 5 and thedoffing control device 6. Oneunit controller 5 is provided separately for eachwinding unit 2 and controls the operation of each part of thewinding unit 2. Thedoffing control device 6 is arranged corresponding to thedoffing device 3 and controls the operation of thedoffing device 3. - A detailed configuration of the winding
unit 2 will be explained below.FIG. 3 is a schematic configuration diagram of the windingunit 2. The windingunit 2 forms the package P by unwinding the yarn Y from the yarn supplying bobbin B and winding the yarn Y around a winding tube Q while traversing the yarn Y. In the present embodiment, the yarn Y is an elastic yarn having elasticity such as a core spun yarn (CSY) . The CSY is a yarn in which short fibers are twisted around a core polyurethane yarn having elasticity. - As shown in
FIG. 3 , the windingunit 2 includes ayarn supplying unit 11 that holds a yarn supplying bobbin B such that the yarn Y wound on the yarn supplying bobbin B can be supplied, a yarnprocessing execution unit 12 that performs various processes on the yarn Y unwound from the yarn supplying bobbin B held by theyarn supplying unit 11, and a windingunit 13 that forms the package P by winding the yarn Y processed by the yarnprocessing execution unit 12 around the winding tube Q. Theyarn supplying unit 11, the yarnprocessing execution unit 12, and the windingunit 13 are arranged in this order from bottom to top. - The
yarn supplying unit 11 includes abobbin holding member 15 that holds the yarn supplying bobbin B, and anunwinding assisting device 16 that assists in unwinding the yarn Y from the yarn supplying bobbin B. The unwinding assistingdevice 16 includes acylindrical body 29 that caps the yarn supplying bobbin B from above. Thecylindrical body 29 can be raised and lowered by a not shown motor. As the unwinding of the yarn Y progresses, thecylindrical body 29 of theunwinding assisting device 16 is lowered. As a result, the bulging (ballooning) of the yarn Y that is being unwound is restricted and the tension of the yarn Y is stabilized. - The winding
unit 13 includes acradle 14, which rotatably holds the winding tube Q, and atraverse drum 18. Thetraverse drum 18 is rotationally driven by a not shown drum motor. Aspiral traversing groove 18a is formed on an outer peripheral surface of thetraverse drum 18. The yarn Y is traversed by using the traversinggroove 18a. When thetraverse drum 18 rotates in a state that thetraverse drum 18 is in contact with the package P formed on the winding tube Q while the yarn Y is traversed by the traversinggroove 18a, the package P rotates in a winding direction because of a contact friction with thetraverse drum 18. As a result, the yarn Y unwound from the yarn supplying bobbin B is wound on the winding tube Q. - The yarn
processing execution unit 12 located between theyarn supplying unit 11 and the windingunit 13 includes ayarn feeler 19, atension applying device 20, ayarn joining device 21, and ayarn clearer 22. - The
yarn feeler 19 is arranged between the unwinding assistingdevice 16 and thetension applying device 20 and detects the presence or absence of the traveling yarn Y. - The
tension applying device 20 applies a predetermined tension to the traveling yarn Y.FIG. 3 shows a so-called gate-typetension applying device 20 as an example. In the gate-typetension applying device 20, a plurality of fixedgate members 20a and a plurality ofmovable gate members 20b are arranged alternately in the up-down direction. An appropriate tension can be applied to the yarn Y that travels between thefixed gate members 20a and themovable gate members 20b by adjusting the horizontal positions of themovable gate members 20b. - The
yarn joining device 21 is a device that joins the broken yarn Y on the yarn supplying bobbin B side (theyarn supplying unit 11 side) and the broken yarn Y on the package P side (the windingunit 13 side). The yarn Y may be broken when the yarn Y is cut by acutter 22a when a yarn defect is detected by theyarn clearer 22 described later, when the yarn Y breaks during the winding operation, when the yarn Y on the yarn supplying bobbin B is exhausted so that the empty yarn supplying bobbin B is replaced with another yarn supplying bobbin B, or the like. - A lower yarn catching guiding
member 23 that catches the yarn Y on the yarn supplying bobbin B side and guides the caught yarn Y to theyarn joining device 21 is arranged below theyarn joining device 21. An upper yarn catching guidingmember 24 that catches the yarn Y on the package P side and guides the caught yarn Y to theyarn joining device 21 is arranged above theyarn joining device 21. The lower yarn catching guidingmember 23 is pivotable around ashaft 23a. The lower yarn catching guidingmember 23 is pivoted up or down by a not shown motor. Similarly, the upper yarn catching guidingmember 24 is pivotable around ashaft 24a. The upper yarn catching guidingmember 24 is pivoted up or down by a not shown motor. The lower yarn catching guidingmember 23 and the upper yarn catching guidingmember 24 are respectively connected to a not shown suction source. - The lower yarn catching guiding
member 23 has asuction member 23b at its tip end section. Thesuction member 23b sucks and catches the yarn end of the yarn Y on theyarn supplying unit 11 side. While thesuction member 23b has caught the yarn end at a lower position, the lower yarn catching guidingmember 23 turns upward and guides the caught yarn Y to theyarn joining device 21. - The upper yarn catching guiding
member 24 has asuction mouth 24b at its tip end section. Thesuction mouth 24b sucks and catches the yarn end of the yarn Y on the windingunit 13 side. The upper yarn catching guidingmember 24 is first turned upward from below, and thesuction mouth 24b is positioned near a position where the package P and thetraverse drum 18 contact each other. As a result, a yarn end of the yarn Y that has stuck to the surface of the package P can be sucked and caught with thesuction mouth 24b. Then, the upper yarn catching guidingmember 24 catches the yarn end of the yarn Y and guides the caught yarn Y to theyarn joining device 21 by turning downward from above. - The
yarn joining device 21 joins the yarn end of the yarn Y guided thereto by the lower yarn catching guidingmember 23 and the yarn end of the yarn Y guided thereto by the upper yarn catching guidingmember 24 to form a continuous yarn Y. The configuration and operation of theyarn joining device 21 will be explained in detail later. - The
yarn clearer 22 continuously acquires information on a thickness of the traveling yarn Y. Theyarn clearer 22 detects a yarn defect by using the information on the thickness of the yarn Y. The yarn defect is an abnormal portion in the yarn Y where the thickness is larger than a certain value. Theyarn clearer 22 includes thecutter 22a. When the yarn defect is detected by theyarn clearer 22, thecutter 22a immediately cuts the yarn Y. - The
yarn joining device 21 will be explained in detail below. In the following description, as necessary, the yarn Y on theyarn supplying unit 11 side will be referred to as a yarn Y1 and the yarn Y on the windingunit 13 side will be referred to as a yarn Y2.FIG. 4A is a front view andFIG. 4B is a side view of theyarn joining device 21 immediately after the yarns Y1 and Y2 have been guided to theyarn joining device 21. Theyarn joining device 21 includes asupport member 30, ayarn joining nozzle 31, two untwistingpipes upper guide plate 33, alower guide plate 34, twoyarn shifting levers shrinkage control levers - The
yarn joining nozzle 31 is fixed to a front surface of the box-shapedsupport member 30. Theyarn joining nozzle 31 twists the yarn end of the yarn Y1 and the yarn end of the yarn Y2 to join the yarns. Theyarn joining nozzle 31 is provided with ayarn joining space 31a extending in the up-down direction (corresponding to a "predetermined direction" according to the present invention). Theyarn joining space 31a is open on the front side thereof. The yarns Y1 and Y2 can be introduced into theyarn joining space 31a from the front side of theyarn joining space 31a. Not shown jetting holes for jetting compressed air are formed in an inner wall of theyarn joining space 31a. Then, in a state that the yarn ends of the yarns Y1 and Y2 have been introduced into theyarn joining space 31a, a swirling air current is generated in theyarn joining space 31a by jetting compressed air from the jetting holes to cause the yarn ends of the yarns Y1 and Y2 to be joined. - The untwisting
pipe 32A is arranged above and the untwistingpipe 32B is arranged below theyarn joining nozzle 31. The untwistingpipes support member 30. The front and rear ends of the untwistingpipes suction vent 32a that sucks the yarns Y1 and Y2. Theupper untwisting pipe 32A is arranged between theyarn joining nozzle 31 and acutter 41A described later in the up-down direction. Theupper untwisting pipe 32A sucks the yarn Y1 cut by thecutter 41A. On the other hand, thelower untwisting pipe 32B is arranged between theyarn joining nozzle 31 and a later-describedcutter 41B in the up-down direction. Thelower untwisting pipe 32B sucks the yarn Y2 cut by thecutter 41B. - Not shown jetting holes for jetting compressed air are formed in the inner walls of the untwisting
pipes pipes suction vent 32a of each of the untwistingpipes pipes - The
upper guide plate 33 is arranged above theyarn joining nozzle 31. Theupper guide plate 33 is provided withguide grooves guide grooves left guide groove 33a. Aclamp 42A is attached to theupper guide plate 33. Theclamp 42A grips the yarn Y2 that has been introduced into theguide groove 33b. In the present invention, when considering the yarn Y2 as a reference, theupper guide plate 33 to which theclamp 42A capable of gripping the yarn Y2 is attached is arranged on one side (corresponding to a "first side" according to the present invention) of theyarn joining space 31a that extends in the up-down direction (corresponding to the predetermined direction according to the present invention). The yarn Y2 is introduced into theright guide groove 33b. Thecutter 41A is attached to theupper guide plate 33. Thecutter 41A cuts the yarn Y1 that is introduced into theguide groove 33a. In the present invention, when considering the yarn Y1 as a reference, theupper guide plate 33 to which thecutter 41A capable of cutting the yarn Y1 is attached is arranged on another side (corresponding to a "second side" according to the present invention) of theyarn joining space 31a that extends in the up-down direction (corresponding to the predetermined direction according to the present invention). - The
lower guide plate 34 is arranged below theyarn joining nozzle 31. Thelower guide plate 34 is provided withguide grooves guide grooves left guide groove 34a. The yarn Y2 is introduced into theright guide groove 34b. Theguide grooves guide grooves clamp 42B is attached to thelower guide plate 34. Theclamp 42B grips the yarn Y1 that has been introduced into theguide groove 34a. In the present invention, when considering the yarn Y1 as a reference, thelower guide plate 34 to which theclamp 42B capable of gripping the yarn Y1 is attached is arranged on the one side (corresponding to the first side according to the present invention) of theyarn joining space 31a that extends in the up-down direction (corresponding to the predetermined direction according to the present invention). Thecutter 41B is attached to thelower guide plate 34. Thecutter 41B cuts the yarn Y2 that has been introduced into theguide groove 34b. In the present invention, when considering the yarn Y2 as a reference, thelower guide plate 34 to which thecutter 41B capable of cutting the yarn Y2 is attached is arranged on the other side (corresponding to the second side according to the present invention) of theyarn joining space 31a that extends in the up-down direction (corresponding to the predetermined direction according to the present invention) . In summary, theupper guide plate 33 is arranged on the one side in the up-down direction with respect to the yarn Y2, and thelower guide plate 34 is arranged on the other side in the up-down direction. Theupper guide plate 33 is arranged on the other side in the up-down direction with respect to the yarn Y1, and thelower guide plate 34 is arranged on the one side in the up-down direction. - The
yarn shifting lever 35A is arranged above theyarn joining nozzle 31 and theyarn shifting lever 35B is arranged below theyarn joining nozzle 31. The upperyarn shifting lever 35A is arranged between theupper untwisting pipe 32A and theupper guide plate 33 in the up-down direction. On the other hand, the loweryarn shifting lever 35B is arranged between thelower untwisting pipe 32B and thelower guide plate 34 in the up-down direction. Theyarn shifting levers yarn joining nozzle 31. Theyarn shifting levers yarn shifting levers yarn shifting levers - The
twist prevention lever 36A is arranged above theyarn joining nozzle 31 and thetwist prevention lever 36B is arranged below theyarn joining nozzle 31. The uppertwist prevention lever 36A is arranged between theupper untwisting pipe 32A and the upperyarn shifting lever 35A in the up-down direction. On the other hand, the lowertwist prevention lever 36B is arranged between thelower untwisting pipe 32B and the loweryarn shifting lever 35B in the up-down direction. The twist prevention levers 36A and 36B pivot integrally around theshaft 43. When applying the twists to the yarn ends of the yarns Y1 and Y2 in theyarn joining space 31a, thetwist prevention lever 36A is in contact with the yarn Y2 and thetwist prevention lever 36B is in contact with the yarn Y1. This prevents the twists applied to the yarn ends of the yarns Y1 and Y2 from propagating beyond the twist prevention levers 36A and 36B. - The
yarn shifting levers shaft 43 by a not shown common driving device. However, a not shown stopper restricts the pivoting of the twist prevention levers 36A and 36B. Thus, the twist prevention levers 36A and 36B do not pivot out of a predetermined range. That is, when theyarn shifting levers yarn shifting levers yarn shifting levers - The yarn
shrinkage control lever 37A is arranged above theyarn joining nozzle 31 and the yarnshrinkage control lever 37B is arranged below theyarn joining nozzle 31. The upper yarnshrinkage control lever 37A is arranged between theyarn joining nozzle 31 and theupper untwisting pipe 32A in the up-down direction. On the other hand, the lower yarnshrinkage control lever 37B is arranged between theyarn joining nozzle 31 and thelower untwisting pipe 32B in the up-down direction. The yarnshrinkage control levers yarn joining nozzle 31. The yarnshrinkage control levers shrinkage control levers support member 30, the yarns Y1 and Y2 are gripped between the yarnshrinkage control levers support member 30. That is, the yarnshrinkage control levers pipes shrinkage control levers pipes - The yarn
shrinkage control levers FIG. 5 is a perspective view of a structure around an attachment member of the yarnshrinkage control levers shrinkage control levers cylindrical boss 38 that extends in the up-down direction. That is, the yarnshrinkage control lever 37A is fixed to an upper end of theboss 38 and the yarnshrinkage control lever 37B is fixed to a lower end of theboss 38. Theboss 38 is attached to theshaft 44 via a not shown bearing. Theshaft 44 is fixed to abase member 45. Thebase member 45 is fixed to thesupport member 30 of theyarn joining device 21. With such a configuration, the yarnshrinkage control levers shaft 44. - A torsion spring 46 (corresponding to a biasing member according to the present invention) is arranged in a portion of the
shaft 44 between the lower yarnshrinkage control lever 37B and thebase member 45. A not shown lower end of thetorsion spring 46 is fixed to thebase member 45, and anupper end 46a of thetorsion spring 46 is fixed to the yarnshrinkage control lever 37B. Thetorsion spring 46 biases the yarnshrinkage control levers FIG. 5 ) (hereinafter, "biasing direction F"). A plurality ofattachment holes 37a for inserting theupper end 46a of thetorsion spring 46 are formed in the yarnshrinkage control lever 37B in the circumferential direction of theshaft 44. The biasing force by thetorsion spring 46 can be adjusted by inserting theupper end 46a of thetorsion spring 46 in a desired one of theattachment holes 37a. That is, theseattachment holes 37a correspond to an adjustment member according to the present invention. - A
rotary member 47 capable of rotating around a central axis of theshaft 44 is arranged below thebase member 45. Therotary member 47 has the shape of English letter L when viewed from the up-down direction. Therotary member 47 has afirst arm 47a and asecond arm 47b that are substantially perpendicular to each other. A regulating pin 48 (corresponding to a regulating member according to the present invention) that extends upward is fixed to thefirst arm 47a. Acylinder 49 is connected to thesecond arm 47b. An upper end of the regulatingpin 48 is passed through a throughhole 37b formed in the yarnshrinkage control lever 37B. As a result, the regulatingpin 48 can revolve around theshaft 44 while restricting the yarnshrinkage control lever 37B from moving in the biasing direction F. The throughhole 37b has a larger diameter than that of the regulatingpin 48. Accordingly, the yarnshrinkage control lever 37B and the regulatingpin 48 can relatively move together in the biasing direction F. - When the
yarn joining device 21 is not performing the yarn joining, the yarnshrinkage control levers torsion spring 46; however, the movement in the biasing direction F of the yarnshrinkage control levers pin 48. To operate the yarnshrinkage control levers rotary member 47 is rotated by thecylinder 49 in the same direction as the biasing direction F. Then, the regulatingpin 48 revolves in the same direction as the biasing direction F, and the yarnshrinkage control levers pin 48. Thecylinder 49 stops the rotation of therotary member 47 at the timing when the yarnshrinkage control levers support member 30. The yarnshrinkage control levers support member 30. As a result, the yarns Y1 and Y2 are gripped by being sandwiched between the yarnshrinkage control levers support member 30. - The yarn joining operation when the yarns Y1 and Y2 are joined by the
yarn joining device 21 will be explained in detail below with reference toFIG. 6A to FIG. 9B .FIG. 6A is a front view andFIG. 6B is a side view of theyarn joining device 21 just before the yarns Y1 and Y2 are cut by thecutters FIG. 7A is a front view andFIG. 7B is a side view of theyarn joining device 21 immediately after the yarns Y1 and Y2 are cut by thecutters FIG. 8A is a front view andFIG. 8B is a side view of theyarn joining device 21 in a state that the yarn ends of the yarns Y1 and Y2 have been introduced into theyarn joining space 31a.FIG. 9A is a front view andFIG. 9B is a side view of theyarn joining device 21 while theyarn joining device 21 is joining the yarns. - When the yarn Y is broken for some reason, first, as shown in
FIGS. 4A and 4B , the yarns Y1 and Y2 are guided to theyarn joining device 21 by the lower yarn catching guidingmember 23 and the upper yarn catching guidingmember 24. At this time, the yarn Y1 is introduced also into theguide grooves guide grooves - In this state, the unit controller 5 (corresponding to a control section according to the present invention) causes the yarns Y1 and Y2 to be moved rearward by pivoting the
yarn shifting levers FIGS. 6A and 6B , the yarns Y1 and Y2 are introduced into theyarn joining space 31a of theyarn joining nozzle 31. Moreover, the yarn Y1 is pushed into the interior of theguide grooves clamp 42B, and the yarn Y2 is pushed into the interior of theguide grooves clamp 42A. - The
unit controller 5 pivots the yarnshrinkage control levers yarn shifting levers FIGS. 6A and 6B , the yarnshrinkage control lever 37A contacts the front surface of thesupport member 30 between theyarn joining nozzle 31 and the untwistingpipe 32A. As a result, the yarn Y1 is sandwiched between the yarnshrinkage control lever 37A and thesupport member 30 whereby the yarn Y1 is gripped. Also, the yarnshrinkage control lever 37B contacts the front surface of thesupport member 30 between theyarn joining nozzle 31 and the untwistingpipe 32B. As a result, the yarn Y2 is sandwiched between the yarnshrinkage control lever 37B and thesupport member 30 whereby the yarn Y2 is gripped. The force with which the yarnshrinkage control levers pipes shrinkage control levers support member 30. - Next, the
unit controller 5 causes thecutter 41A to cut the yarn Y1 and causes thecutter 41B to cut the yarn Y2. At the same time or just before cutting the yarns Y1 and Y2, an air current is generated in the untwistingpipes FIGS. 7A and 7B , the cut yarn end of the yarn Y1 is sucked into theupper untwisting pipe 32A, and the cut yarn end of the yarn Y2 is sucked into thelower untwisting pipe 32B. The yarn ends of the yarns Y1 and Y2 are untwisted by the air current generated in the untwistingpipes member 23 and the upper yarn catching guidingmember 24. - Since the yarn Y is the elastic yarn, such as CSY, when the yarn Y is cut by the
cutters pipes shrinkage control levers suction vent 32a by the yarnshrinkage control levers pipes - Subsequently, the
unit controller 5 pivots theyarn shifting levers FIGS. 8A and 8B , the untwisted yarn ends of the yarns Y1 and Y2 are pulled out from the untwistingpipes yarn joining space 31a of theyarn joining nozzle 31. That is, theyarn shifting levers shrinkage control levers pipes yarn shifting levers shrinkage control levers support member 30. Therefore, the yarn ends of the yarns Y1 and Y2 are introduced into theyarn joining space 31a without any problem. - The
unit controller 5 returns the yarnshrinkage control levers yarn joining space 31a. By doing so, the yarn ends of the yarns Y1 and Y2 are joined together by the action of the swirling air current present in theyarn joining space 31a. At this time, thetwist prevention lever 36A contacts the yarn Y2 and thetwist prevention lever 36B contacts the yarn Y1. Accordingly, it is possible to prevent the twists of the yarns from being propagated over the twist prevention levers 36A and 36B at the time of yarn joining. When the yarn joining is completed, theyarn shifting levers unit 13 is resumed. - The
yarn joining device 21 of the present embodiment includes the yarn shrinkage suppression mechanism (the yarnshrinkage control levers suction vent 32a of the untwistingpipes yarn joining nozzle 31, and the control section (the unit controller 5) causes thecutters shrinkage control levers cutters shrinkage control levers suction vent 32a of the untwistingpipes yarn joining nozzle 31, the shrinkage of the yarns Y1 and Y2 is stopped by the yarnshrinkage control levers pipes - In the present embodiment, the yarn
shrinkage control levers shrinkage control levers shrinkage control levers - The present embodiment includes the pulling member (the
yarn shifting levers pipes pipes pipes members control section 5 causes the yarnshrinkage control levers cutters pipes yarn joining space 31a, leading to failure in the yarn joining. Therefore, as mentioned above, by griping the yarns Y1 and Y2 with the yarnshrinkage control levers pipes shrinkage control levers yarn joining space 31a, and the yarn joining can be performed favorably. - In the present embodiment, the yarn
shrinkage control levers members pipes shrinkage control levers pipes shrinkage control levers shrinkage control levers pipes pipes shrinkage control levers shrinkage control levers pipes shrinkage control levers shrinkage control levers - In the present embodiment, the yarns Y1 and Y2 are sandwiched between the yarn
shrinkage control levers support member 30 that supports theyarn joining nozzle 31 thereby gripping the yarns Y1 and Y2. By adopting such a configuration, the configuration of the yarnshrinkage control levers - In the present embodiment, the yarn shrinkage suppression mechanism is realized by the yarn
shrinkage control levers yarn joining device 21 in which not much empty space is available. - The present embodiment includes the biasing member (the torsion spring 46) that biases the yarn
shrinkage control levers support member 30. By adopting such a biasingmember 46, the yarns Y1 and Y2 can be sandwiched between the yarnshrinkage control levers support member 30 and can be securely gripped therebetween. - The present embodiment includes the regulating member (the regulating pin 48) that can revolve around the
first pivot shaft 44 while restricting the movement of the yarnshrinkage control levers member 46, and the yarnshrinkage control levers member 48 are relatively movable in the biasing direction F. In this configuration, by rotating the regulatingmember 48 to thesupport member 30 side, the yarnshrinkage control levers member 48, can be moved to the biasing direction (the support member side). Also, because the yarnshrinkage control levers member 48 can move relatively in the biasing direction F, when the yarnshrinkage control levers support member 30 and can no longer move in the biasing direction F, only the regulatingmember 48 moves to the biasing direction F. Therefore, even if there is an error in the rotation control of the regulatingmember 48, the yarnshrinkage control levers support member 30 by the regulatingmember 48, and a control by using the yarnshrinkage control levers - The present embodiment includes the adjustment member (the attachment holes 37a) for adjusting the biasing force exerted by the biasing
member 46. By adopting such an adjustment member, for example, the gripping force for gripping the yarns Y1 and Y2 can be adjusted according to the elasticity of the yarn Y. - The present embodiment includes the
yarn shifting levers yarn joining space 31a, and thefirst pivot shaft 44 of the yarnshrinkage control levers second pivot shaft 43 of theyarn shifting levers yarn joining nozzle 31. With such an arrangement, a driving device such as thecylinder 49 for driving the yarnshrinkage control levers - Other embodiments that are the modifications of the above embodiment are explained below.
- In the above embodiment, when the yarn ends of the yarns Y1 and Y2 are pulled out from the untwisting
pipes yarn shifting levers shrinkage control levers pipes shrinkage control levers pipes pipes shrinkage control levers - In the above embodiment, the gripping force with which the yarn
shrinkage control levers pipes yarn shifting levers shrinkage control levers shrinkage control levers cutters shrinkage control levers pipes - In the above embodiment, the yarn
shrinkage control levers shrinkage control levers Japanese Patent Application Laid-Open No. 2005-112550 support member 30 can be arranged in the cover mechanism. - The above embodiment includes the
torsion spring 46 for biasing the yarnshrinkage control levers pin 48 for regulating the movement of the yarnshrinkage control levers torsion spring 46 and the regulatingpin 48 can be omitted. Further, in order to adjust the biasing force of thetorsion spring 46, a plurality of theattachment holes 37a is provided as the adjustment member of the present invention; however, it is allowable to provide only oneattachment hole 37a. - In the above embodiment, the
shaft 43 that is the second pivot shaft for theyarn shifting levers shaft 44 that is the first pivot shaft for the yarnshrinkage control levers yarn joining nozzle 31. However, the second pivot shaft can be used in common by theyarn shifting levers shrinkage control levers - The above embodiment includes the twist prevention levers 36A and 36B separately from the yarn
shrinkage control levers shrinkage control levers - In the above embodiment, the yarn
shrinkage control levers pipes shrinkage control levers shrinkage control levers shrinkage control levers shrinkage control levers pipes - In the above embodiment, the present invention was applied to the
yarn joining device 21 provided in the windingunit 2 of theautomatic winder 1. However, it is possible to apply the present invention to a yarn joining device of other textile machines (for example, a pneumatic spinning frame). - In the above embodiment, the predetermined direction is described as the up-down direction; however, the predetermined direction is not limited to the up-down direction. Specifically, the predetermined direction is the direction in which the yarn joining space of the
yarn joining nozzle 31 extends, and the direction is generally the direction perpendicular to a surface on which the winding unit is installed; however, this direction can be inclined with respect to the direction perpendicular to the surface on which the winding unit is installed. The inclination angle can be changed (set) as desired by the layout of theyarn joining nozzle 31, theclamps member 24, and the lower yarn catching guidingmember 23. - A yarn joining device according to one aspect of the present invention includes a yarn joining nozzle having a yarn joining space extending in a predetermined direction; two clamps each arranged on either side of the yarn joining nozzle in the predetermined direction for gripping a corresponding yarn; two cutters each arranged on either side of the yarn joining nozzle in the predetermined direction for cutting the corresponding yarn; two untwisting pipes each having a suction vent arranged between the yarn joining nozzle and the corresponding cutter in the predetermined direction for sucking a yarn end of the corresponding yarn gripped by the corresponding clamp and cut by the corresponding cutter; a control section; and a yarn shrinkage suppression mechanism capable of moving so as to contact the yarns between the suction vents and the yarn joining nozzle in the predetermined direction. The control section causes the cutters to cut the yarns while the yarn shrinkage suppression mechanism is in contact with the yarns.
- According to the above yarn joining device, even if the elastic yarn shrinks vigorously when cut with the cutter, because the yarn shrinkage suppression mechanism contacts the yarns between the suction vents of the untwisting pipes and the yarn joining nozzle, the shrinkage of the yarns is stopped by the yarn shrinkage suppression mechanism. Therefore, even the yarn ends of the elastic yarns can be easily sucked by the untwisting pipes, and the yarns can be favorably joined.
- In the above yarn joining device, the yarn shrinkage suppression mechanism grips the yarns.
- Because the yarn shrinkage suppression mechanism is configured to grip the yarns, the yarn shrinkage suppression mechanism can reliably stop the shrinkage of the yarns, and the success rate of joining of the elastic yarns is increased.
- It is preferable that the above yarn joining device further includes a pulling member that pulls out from the untwisting pipes the yarn ends sucked into the untwisting pipes, and the control section causes the yarn shrinkage suppression mechanism to grip the yarns while the yarn ends are pulled out from the untwisting pipes by the pulling member.
- When joining the elastic yarns, shrinkage occurs not only when the yarns are cut by the cutters, but also when the yarn ends of the yarns are pulled out from the untwisting pipes . When shrinkage occurs, there is a possibility that the yarn ends of the yarns are not positioned at the predetermined positions in the yarn joining space, leading to failure in the yarn joining. Therefore, as mentioned above, by griping the yarns with the yarn shrinkage suppression mechanism at the time of pulling out the yarn ends of the yarns from the untwisting pipes, shrinkage of the yarns can be stopped by the yarn shrinkage suppression mechanism. As a result, the yarn ends of the yarns can be surely positioned at the predetermined position in the yarn joining space, and the yarn joining can be performed favorably.
- In the above yarn joining device, it is preferable that the yarn shrinkage suppression mechanism grips the yarns with such a force that the yarn ends pulled out from the untwisting pipes by the pulling member slip through the yarn shrinkage suppression mechanism.
- As mentioned above, when the yarn ends of the yarns are pulled out from the untwisting pipes, favorable joining is achieved if the yarn shrinkage suppression mechanism grips the yarns. However, if the yarn shrinkage suppression mechanism grips the yarns strongly, the yarn ends of the yarns cannot be pulled out from the untwisting pipes in the first place. Accordingly, when the yarn ends are pulled out from the untwisting pipes, a delicate control needs to be performed to weaken the gripping force of the yarn shrinkage suppression mechanism. In this respect, when the gripping force with which the yarns are gripped by the yarn shrinkage suppression mechanism is such that the yarn ends of the yarns pulled out from the untwisting pipes can slip through the yarn shrinkage suppression mechanism, the delicate control of the yarn shrinkage suppression mechanism becomes unnecessary, and this structure is preferable.
- It is preferable that the above yarn joining device further includes a pulling member that pulls out from the untwisting pipes the yarn ends sucked into the untwisting pipes, and the control section causes the yarn shrinkage suppression mechanism to release the grip on the yarns before causing the pulling member to pull out the yarn ends from the untwisting pipes.
- When the elasticity of the elastic yarn is not so high, the shrinkage of the yarn when the yarn end is pulled out from the untwisting pipe may not be a problem. In this case, the gripped state of the yarn can be released before the yarn end is pulled out from the untwisting pipe. By adopting such a configuration, because there is no need for delicate adjustment and control so that the yarn end can slip through the yarn shrinkage suppression mechanism, this structure is preferable.
- In the above yarn joining device, the yarn shrinkage suppression mechanism grips the yarns by sandwiching the yarns between itself and a support member that supports the yarn joining nozzle.
- By adopting such a configuration, the configuration of the yarn shrinkage suppression mechanism can be simplified.
- In the above yarn joining device, it is preferable that the yarn shrinkage suppression mechanism includes two yarn shrinkage control levers that can pivot around a first pivot shaft that extends in the predetermined direction.
- By adopting such a configuration, the yarn shrinkage suppression mechanism can be easily realized even in the yarn joining device in which not much empty space is available.
- It is preferable that the above yarn joining device further includes a biasing member that biases the yarn shrinkage control levers toward the support member.
- By adopting such a biasing member, the yarn can be sandwiched between the yarn shrinkage control lever and the support member and can be securely gripped therebetween.
- It is preferable that the above yarn joining device further includes a regulating member capable of rotating around the first pivot shaft while regulating a movement of the yarn shrinkage control levers in a biasing direction of the biasing member, and the yarn shrinkage control levers and the regulating member are relatively movable in the biasing direction.
- In this configuration, by rotating the regulating member to the support member side, the yarn shrinkage control levers, whose movement in the biasing direction is regulated by the regulating member, can be moved to the biasing direction (the support member side). Also, because the yarn shrinkage control levers and the regulating member can move relatively in the biasing direction, when the yarn shrinkage control levers abut against the support member and can no longer move in the biasing direction, only the regulating member moves to the biasing direction. Therefore, even if there is an error in the rotation control of the regulating member, the yarn shrinkage control levers can be controlled to prevent from being strongly pressed against the support member by the regulating member, and a control by using the yarn shrinkage control levers of the biasing force for gripping the yarns to a certain value becomes easy.
- It is preferable that the above yarn joining device further includes an adjustment member capable of adjusting a biasing force of the biasing member.
- By adopting such an adjustment member, for example, the gripping force for gripping the yarn can be adjusted according to the elasticity of the yarn.
- It is preferable that the above yarn joining device further includes two yarn shifting levers each capable of pivoting around a second pivot shaft that extends in the predetermined direction and that introduce the yarns into the yarn joining space, and the first pivot shaft of the yarn shrinkage control levers and the second pivot shaft of the yarn shifting levers are arranged on opposite sides with respect to the yarn joining nozzle.
- With such an arrangement, a driving device such as a cylinder for driving the yarn shrinkage control lever can be easily arranged.
- A yarn winding device according to another aspect of the present invention includes a yarn supplying unit that supplies a yarn; a winding unit that is arranged at a position separated from the yarn supplying unit in the predetermined direction and that winds the yarn supplied from the yarn supplying unit; and the above yarn joining device arranged between the yarn supplying unit and the winding unit in the predetermined direction.
- According to the above yarn winding device, even when winding the elastic yarn, because the yarn end of the yarn cut by the cutter when performing yarn joining can be easily sucked with the untwisting pipe, it is possible to perform the yarn joining favorably.
- In the above explanation, the meaning of "a plurality of" also includes "a predetermined number of".
- Although the invention has been explained with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the scope of the claims.
Claims (12)
- A yarn joining device (21) comprising:a yarn joining nozzle (31) having a yarn joining space (31a) extending in a predetermined direction;two clamps (42A, 42B) each arranged on either side of the yarn joining nozzle (31) in the predetermined direction for gripping a corresponding yarn;two cutters (41A, 41B) each arranged on either side of the yarn joining nozzle (31) in the predetermined direction for cutting the corresponding yarn;two untwisting pipes (32A, 32B) each having a suction vent (32a) arranged between the yarn joining nozzle (31) and the corresponding cutter (41A, 41B) in the predetermined direction for sucking a yarn end of the corresponding yarn gripped by the corresponding clamp (42A, 42B) and cut by the corresponding cutter (41A, 41B);a control section (5);a yarn shrinkage suppression mechanism (37A, 37B) capable of moving so as to contact the yarns between the suction vents (32a) and the yarn joining nozzle (31) in the predetermined direction, whereinthe control section (5) is adapted to cause the cutters (41A, 41B) to cut the yarns while the yarn shrinkage suppression mechanism (37A, 37B) is in contact with the yarns; characterized in that the yarn shrinkage suppression mechanism (37A, 37B) is adapted to grip the yarns by sandwiching the yarns between itself and a support member (30) that supports the yarn joining nozzle (31).
- The yarn joining device (21) as claimed in Claim 1, further comprising a pulling member (35A, 35B) that is adapted to pull out from the untwisting pipes (32A, 32B) the yarn ends sucked into the untwisting pipes (32A, 32B),
wherein the control section (5) is adapted to cause the yarn shrinkage suppression mechanism (37A, 37B) to grip the yarns while the yarn ends are pulled out from the untwisting pipes (32A, 32B) by the pulling member (35A, 35B). - The yarn joining device (21) as claimed in Claim 2, wherein the yarn shrinkage suppression mechanism (37A, 37B) is adapted to grip the yarns with such a force that the yarn ends pulled out from the untwisting pipes (32A, 32B) by the pulling member (35A, 35B) slip through the yarn shrinkage suppression mechanism (37A, 37B).
- The yarn joining device (21) as claimed in Claim 1, further comprising a pulling member (35A, 35B) that is adapted to pull out from the untwisting pipes (32A, 32B) the yarn ends sucked into the untwisting pipes (32A, 32B),
wherein the control section (5) is adapted to cause the yarn shrinkage suppression mechanism (37A, 37B) to release the grip on the yarns before causing the pulling member (35A, 35B) to pull out the yarn ends from the untwisting pipes (32A, 32B). - The yarn joining device (21) as claimed in Claim 1, wherein the yarn shrinkage suppression mechanism (37A, 37B) includes two yarn shrinkage control levers (37A, 37B) that are adapted to pivot around a first pivot shaft (44) that extends in the predetermined direction.
- The yarn joining device (21) as claimed in Claim 5, further comprising a biasing member that is adapted to bias the yarn shrinkage control levers (37A, 37B) toward the support member (30).
- The yarn joining device (21) as claimed in Claim 6, further comprising a regulating member capable of rotating around the first pivot shaft (44) while regulating a movement of the yarn shrinkage control levers (37A, 37B) in a biasing direction of the biasing member,
wherein the yarn shrinkage control levers (37A, 37B) and the regulating member are relatively movable in the biasing direction. - The yarn joining device (21) as claimed in Claim 6 or 7, further comprising an adjustment member capable of adjusting a biasing force of the biasing member.
- The yarn joining device (21) as claimed in any one of Claims 5 to 8, further comprising two yarn shifting levers (35A, 35B) each capable of pivoting around a second pivot shaft (43) that extends in the predetermined direction and adapted to introduce the yarns into the yarn joining space (31a),
wherein the first pivot shaft (44) of the yarn shrinkage control levers (37A, 37B) and the second pivot shaft (43) of the yarn shifting levers (35A, 35B) are arranged on opposite sides with respect to the yarn joining nozzle (31). - A yarn winding device comprising:a yarn supplying unit (11) adapted to supply a yarn;a winding unit (13) that is arranged at a position separated from the yarn supplying unit (11) in the predetermined direction and adapted to wind the yarn supplied from the yarn supplying unit (11); andthe yarn joining device (21) according to any one of Claims 1 to 9 arranged between the yarn supplying unit (11) and the winding unit (13) in the predetermined direction.
- Method of operating a yarn joining device (21) comprising:a yarn joining nozzle (31) having a yarn joining space (31a) extending in a predetermined direction;two clamps (42A, 42B) each arranged on either side of the yarn joining nozzle (31) in the predetermined direction for gripping a corresponding yarn;two cutters (41A, 41B) each arranged on either side of the yarn joining nozzle (31) in the predetermined direction for cutting the corresponding yarn;two untwisting pipes (32A, 32B) each having a suction vent (32a) arranged between the yarn joining nozzle (31) and the corresponding cutter (41A, 41B) in the predetermined direction for sucking a yarn end of the corresponding yarn gripped by the corresponding clamp (42A, 42B) and cut by the corresponding cutter (41A, 41B);a control section (5); with the following steps:moving a yarn shrinkage suppression mechanism (37A, 37B) so as to contact the yarns between the suction vents (32a) and the yarn joining nozzle (31) in the predetermined direction; andcutting the yarns while the yarn shrinkage suppression mechanism (37A, 37B) is in contact with the yarns; characterizedin that the yarn shrinkage suppression mechanism (37A, 37B) grips the yarns by sandwiching the yarns between itself and a support member (30) that supports the yarn joining nozzle (31).
- The method as claimed in Claim 11, further comprising pulling out from the untwisting pipes (32A, 32B) the yarn ends sucked into the untwisting pipes (32A, 32B), and
gripping the yarns while the yarn ends are pulled out from the untwisting pipes (32A, 32B) by the pulling member (35A, 35B).
Applications Claiming Priority (1)
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JP2019010465A JP2020117366A (en) | 2019-01-24 | 2019-01-24 | Yarn splicing device and yarn winding device |
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EP3686142A1 EP3686142A1 (en) | 2020-07-29 |
EP3686142B1 true EP3686142B1 (en) | 2021-09-29 |
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JPS59112038A (en) | 1982-12-16 | 1984-06-28 | Murata Mach Ltd | Ending of spun yarn |
JP3575367B2 (en) * | 2000-01-18 | 2004-10-13 | 村田機械株式会社 | Piecing device |
DE10124832A1 (en) * | 2001-05-22 | 2002-11-28 | Schlafhorst & Co W | Pneumatic thread splicing assembly has arresting unit located between clamps and elastic strand separation jets |
ITMI20021500A1 (en) * | 2002-07-09 | 2004-01-09 | Mesdan Spa | DEVICE AND PROCEDURE FOR THE PNEUMATIC JOINTING OF THREADS OR YARNS CONTAINING AN ELASTOMER OR HIGH TORSION |
JP4075760B2 (en) | 2003-10-08 | 2008-04-16 | 村田機械株式会社 | Yarn splicer |
DE10359570A1 (en) * | 2003-12-18 | 2005-07-28 | Saurer Gmbh & Co. Kg | Yarn splicing device for the pneumatic joining of yarns |
JP3952023B2 (en) * | 2004-02-06 | 2007-08-01 | 村田機械株式会社 | Textile machinery |
JP2006168923A (en) * | 2004-12-16 | 2006-06-29 | Murata Mach Ltd | Yarn piecing device |
DE102011111033A1 (en) * | 2011-08-19 | 2013-02-21 | Oerlikon Textile Gmbh & Co. Kg | Thread splicing device for cross coil-producing textile machine with pneumatic loadable splicing prism in textile industry, has actuators for lower thread clamp and cutting device and upper thread clamp and cutting device |
JP2013067475A (en) * | 2011-09-21 | 2013-04-18 | Murata Machinery Ltd | Yarn winding machine and yarn winding unit |
JP2014234310A (en) * | 2013-06-05 | 2014-12-15 | 村田機械株式会社 | Yarn splicing device, winding unit, textile machine and yarn splicing method |
JP2014234312A (en) * | 2013-06-05 | 2014-12-15 | 村田機械株式会社 | Yarn splicing device, winding unit, textile machine and yarn splicing method |
DE102017102438A1 (en) * | 2017-02-08 | 2018-08-09 | Saurer Germany Gmbh & Co. Kg | Thread splicing device for a workstation of a cross-wound textile machine |
DE102017114707A1 (en) * | 2017-06-30 | 2019-01-03 | Saurer Spinning Solutions Gmbh & Co. Kg | Thread splicer for pneumatically connecting thread ends |
-
2019
- 2019-01-24 JP JP2019010465A patent/JP2020117366A/en active Pending
- 2019-11-20 EP EP19210228.3A patent/EP3686142B1/en active Active
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CN111470382B (en) | 2023-04-07 |
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