JP2013067464A - Yarn piecing device and yarn winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn piecing device by which the number of parts and the size the device are reduced, and a yarn winding device provided with the yarn piecing device.SOLUTION: A splicer 8 for piecing yarn ends to each other is provided with: a stepping motor 24; a cam mechanism 60 driven by the stepping motor 24; operation mechanisms 70 and 80 whose operations are controlled by the cam mechanism 60; and a single twisted coil spring 25 urging the operation mechanisms 70 and 80 to come into contact with the cam mechanism 60. The operation mechanism 70 includes at least one of: a yarn handler mechanism 70A pulling the yarn end; a twist stopping mechanism 70B holding the yarn ends when the yarn ends are twisted; and a joint length adjusting mechanism 70C adjusting a joint length of the yarn ends. The operation mechanism 80 includes at least one of a yarn gripping mechanism 80A gripping the yarn ends, and a yarn cutting mechanism 80B cutting the yarn ends.

Description

  The present invention relates to a yarn joining device that joins yarn ends together, and a yarn winding device including such a yarn joining device.

  Conventionally, a yarn winding device that winds a yarn from a yarn supplying bobbin around a package is known. In such a yarn winding device, for example, when a yarn is cut to remove a yarn defect, a yarn joining device that joins the yarn end on the yarn feeding bobbin side and the yarn end on the package side is mounted ( For example, see Patent Documents 1 and 2).

Japanese Utility Model Publication No. Hei 4-42169 JP-A 64-26742

  However, the conventional yarn joining device has a plurality of cams, cam followers, and a set of urging members for urging the cam followers to the cams for each operation of the operation mechanism, or an electromagnetic actuator instead of the cam mechanism. There are many parts, such as having, and it was difficult to achieve downsizing.

  Therefore, an object of the present invention is to provide a yarn joining device that can reduce the number of parts and reduce the size, and a yarn winding device including such a yarn joining device.

  The yarn joining device of the present invention is a yarn joining device that joins yarn ends together, and includes a drive source, a cam mechanism that is driven by the drive source, a first operation mechanism and a second operation that are controlled by the cam mechanism. And a single urging member that urges the first operation mechanism and the second operation mechanism so as to contact the cam mechanism, and the first operation mechanism includes a yarn shifting mechanism that moves the yarn end, and a yarn end. It includes at least one of a twist stopping mechanism that holds the yarn ends when twisting each other and a seam length adjusting mechanism that adjusts the length of the seam between the yarn ends, and the second operation mechanism is a yarn that grips the yarn end. It includes at least one of a gripping mechanism and a yarn cutting mechanism for cutting the yarn end.

  In this yarn splicing device, the first operating mechanism and the second operating mechanism are urged so as to contact the cam mechanism by a single urging member. Thus, since the first operating mechanism and the second operating mechanism are urged by the common urging member, the number of parts can be reduced, and as a result, the yarn joining device can be downsized. Become.

  The first operation mechanism has a first cam follower portion that is urged by the urging member so as to contact the cam mechanism, and the second operation mechanism is made to contact the cam mechanism by the urging member. There may be further provided a single support shaft having a second cam follower portion to be urged and to which the first cam follower portion and the second cam follower portion are pivotably attached. According to this configuration, since the first cam follower portion and the second cam follower portion are pivotally attached to the common support shaft, it is easy to bias the first cam follower portion and the second cam follower portion by the common biasing member. Can be realized.

  The urging member is a torsion coil spring and may be rotatably attached to the support shaft. According to this configuration, each of the first cam follower portion and the second cam follower portion can be urged to the cam mechanism with a good balance.

  The cam mechanism includes a single cam shaft provided substantially parallel to the support shaft, and a first cam and a second cam fixed to the cam shaft, and the first cam follower portion includes the first cam follower. The first cam follower has a second cam follower that contacts the second cam, and the first cam follower and the second cam follower are opposite to each other with respect to the support shaft by the biasing member. It may be biased in the rotational direction. According to this configuration, since the first cam follower and the second cam follower are urged so as to sandwich the cam shaft, the first cam follower and the second cam follower are repelled from each other, and each of the first cam and the second cam is efficiently performed. Can be energized.

  Further, the range in which the angle formed by the first cam follower and the second cam follower with respect to the support shaft may be 0 degree or more and less than 40 degree. According to this configuration, the urging force can be stabilized by suppressing the urging force of the first cam follower with respect to the first cam and the urging force of the second cam follower with respect to the second cam from greatly changing.

  A yarn winding device of the present invention includes the above-described yarn joining device of the present invention, and includes a yarn supply unit that supports a yarn feeding bobbin, a yarn unwinding auxiliary unit that controls a balloon of yarn unwound from the yarn feeding bobbin, and traveling. A tension applying unit that applies a predetermined tension to the yarn to be fed, a supply-side yarn catching unit that delivers the supply-side yarn end to the yarn joining device, a winding-side yarn catching unit that delivers the winding-side yarn end to the yarn joining device, and traveling A yarn defect detecting unit for detecting a yarn defect of the yarn and a winding unit for winding the yarn around the package are provided along the yarn path together with the yarn joining device.

  Since the yarn winding device includes the yarn joining device that can be reduced in size as described above, the height of the device from the yarn supply unit to the winding unit can be suppressed. Thereby, for example, when the winding unit is positioned on the upper side, the package can be easily attached to and detached from the winding unit.

  Further, a yarn tension measuring unit that measures the tension of the yarn applied by the tension applying unit and a yarn traveling state detecting unit that detects the state of the traveling yarn may be further provided along the yarn path. Also in this case, the height of the device from the yarn supply unit to the winding unit can be suppressed.

  According to the present invention, it is possible to reduce the number of parts and reduce the size.

It is a front view of the winding unit which is the yarn winding device of one embodiment of the present invention. It is a perspective view of the splicer which is the yarn splicing device of one embodiment of the present invention. It is a perspective view of the splicer. It is a perspective view of the splicer. It is a perspective view of the splicer. It is a longitudinal cross-sectional view for demonstrating the yarn splicing operation | movement of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer. It is a bottom view for demonstrating operation | movement of the operation mechanism of the splicer.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.
[Configuration of winding unit]

  As shown in FIG. 1, a winding unit (yarn winding device) 1 is a device that winds a yarn Y from a yarn feeding bobbin B onto a package P. The yarn feeding bobbin B is formed by a spinning machine in the previous process, and is conveyed from the spinning machine in a state of being set on a tray, for example. Note that an automatic winder is configured by arranging a plurality of winding units 1 in parallel.

  The winding unit 1 includes a bobbin support portion (yarn supply portion) 2, a yarn unwinding assist device (thread unwinding assist portion) 3, a pre-clearer 4, a gate type tensioner (tension applying portion) 5, a tension sensor (yarn tension measurement). Part) 6, lower thread catching device (supply side yarn catching unit) 7, splicer (yarn joining device, yarn processing device) 8, cutter 9, yarn clearer (yarn defect detecting unit) 11, upper thread catching device (winding side) A yarn catching portion) 12 and a winding portion 13 are provided in order from the upstream side (here, the lower side) along the traveling path (that is, the yarn path) of the yarn Y. Each of these components is attached to the machine base 14. Further, the winding unit 1 is provided with a control unit 15 that controls each configuration of the winding unit 1 and a display (display unit) 16 that displays an operation status of the winding unit 1 and the like. The control unit 15 transmits and receives various information related to the winding operation to and from a control device that controls the entire automatic winder.

  The bobbin support part 2 supports the yarn feeding bobbin B in an upright state. The yarn unwinding assisting device 3 controls the balloon of the yarn Y unwound from the yarn supplying bobbin B by a cylindrical member arranged above the yarn supplying bobbin B. The gate type tensioner 5 applies a predetermined tension to the traveling yarn Y by holding the yarn Y in a zigzag shape by a pair of gates including a comb-shaped fixed gate and a movable gate. The tension sensor 6 measures the tension of the yarn Y applied by the gate type tensioner 5.

  The preclearer 4 preliminarily regulates passage of a yarn defect larger than a specified value by a pair of regulating members arranged at a predetermined interval across the yarn path. The yarn clearer 11 detects a yarn defect such as a slab while winding the yarn Y. The cutter 9 cuts the yarn Y when passage of the yarn defect is restricted by the pre-clearer 4 or when the yarn defect is detected by the yarn clearer 11. The splicer 8 joins the yarn end on the yarn feeding bobbin B side and the yarn end on the package P side (yarn ends) when the yarn Y is cut by the cutter 9 or when the yarn Y is broken.

  The lower thread catching device 7 is configured to be pivotable in the vertical direction about the axis α, and a suction port 7a is provided at the pivot end. The suction port 7 a rotates between the upper part of the splicer 8 and the lower part of the preclearer 4. The upper thread catching device 12 is configured to be pivotable in the vertical direction about the axis β, and a suction port 12a is provided at the pivot end. The suction port 12 a rotates between the lower part of the splicer 8 and the winding unit 13. Thereby, the lower thread catching device 7 stands by at the position rotated downward, sucks the yarn end on the yarn supplying bobbin B side by the suction port 7a, and then rotates upward to rotate the yarn supplying bobbin B. The yarn end on the side is handed over to the splicer 8. On the other hand, the upper thread catching device 12 rotates upward and sucks the yarn end on the package P side by the suction port 12a, and then rotates downward and delivers the yarn end on the package P side to the splicer 8. .

The winding unit 13 winds the yarn Y unwound from the yarn supplying bobbin B around the package P to form a full package P. The winding unit 13 includes a winding drum 17 in which a drum groove 17a is formed, and a cradle 18 that rotatably supports the package P. The cradle 18 brings the surface of the package P into contact with the surface of the winding drum 17 with an appropriate contact pressure. The winding unit 13 winds the yarn Y around the package P while traversing the yarn Y with a predetermined width by driving and rotating the winding drum 17 with a motor to rotate the package P.
[Splicer configuration]

  Next, the above-described splicer 8 will be described in more detail. In the following description, for the sake of convenience, the yarn feeding bobbin B side (supply side) is the lower side, the package P side (winding side) is the upper side, the yarn path side with respect to the splicer 8 is the front side, and the opposite side is the rear side. That's it.

  2 and 3, the splicer 8 includes a frame body 21, an untwisting portion 40 attached to the front side of the frame body 21, and a yarn joining portion 50 attached to the front side of the untwisting portion 40. It is equipped with. The splicer 8 is attached to the machine base 14 via the frame body 21. Guide plates 22 and 23 are respectively attached to the upper side and the lower side of the untwisting part 40 so as to face each other with the yarn joining part 50 interposed therebetween. The guide plate 22 is formed with a guide groove 22a into which the yarn end on the package P side is introduced and a guide groove 22b into which the yarn end on the yarn feeding bobbin B side is introduced. Similarly, the guide plate 23 is formed with a guide groove 23a into which the yarn end on the package P side is introduced and a guide groove 23b into which the yarn end on the yarn feeding bobbin B side is introduced.

  The guide plate 22 is provided with a clamp portion 91 that holds the yarn end on the package P side introduced into the guide groove 22a. The guide plate 23 has a yarn end on the package P side introduced into the guide groove 23a. Is provided with a cutter part 87 for cutting. Further, the guide plate 23 is provided with a clamp portion 91 for gripping the yarn end on the yarn feeding bobbin B introduced into the guide groove 23b. The guide plate 22 has a yarn feeding introduced into the guide groove 22b. A cutter part 87 for cutting the yarn end on the bobbin B side is provided. The untwisting unit 40 untwists the yarn end on the package P side and the yarn end on the yarn feeding bobbin B side, which is cut by the cutter unit 87 while being held by the clamp unit 91. The yarn joining portion 50 twists the yarn end on the package P side untwisted by the untwisting portion 40 and the yarn end on the yarn feeding bobbin B side.

  As shown in FIGS. 4 and 5, the splicer 8 includes a stepping motor (drive source) 24, a cam mechanism (transmission mechanism) 60 driven by the stepping motor 24, and an operation whose operation is controlled by the cam mechanism 60. A mechanism (first operating mechanism) 70, an operating mechanism (second operating mechanism) 80, and a single torsion coil spring (biasing member) that urges a part of the operating mechanisms 70, 80 to contact the cam mechanism 60; , First urging member) 25. The operating mechanism 70 includes a yarn shifting mechanism 70A that moves the yarn ends, a twist stopping mechanism 70B that holds the yarn ends when twisting the yarn ends, and a seam length adjusting mechanism 70C that adjusts the length of the seam between the yarn ends. Contains. The operation mechanism 80 includes a yarn gripping mechanism 80A that grips the yarn end and a yarn cutting mechanism 80B that cuts the yarn end.

  The stepping motor 24 is fixed to the upper plate 21a in a state where the rotation shaft 24a protrudes from the upper plate 21a of the frame body 21. The cam mechanism 60 includes a single camshaft 61 that is rotatably supported between the upper plate 21a and the lower plate 21b of the frame body 21, and a cam (first shaft) that is fixed to the camshaft 61 in the vicinity of the upper plate 21a. 1 cam, a plate-like member) 62 and a cam (second cam, a plate-like member) 63 fixed to the cam shaft 61 in the vicinity of the lower plate 21b. Timing pulleys 26 and 27 are respectively fixed to the rotating shaft 24a of the stepping motor 24 and the upper end portion 61a of the cam shaft 61 protruding from the upper plate 21a of the frame body 21, and between the timing pulleys 26 and 27, A timing belt 28 is wound around. As a result, the cam shaft 61 and the cams 62 and 63 are integrally rotated by the stepping motor 24.

  A single support shaft (first support shaft) 29 is spanned between the upper plate 21 a and the lower plate 21 b of the frame body 21 so as to be substantially parallel to the cam shaft 61. A cam follower portion (first cam follower portion) 71 included in the operation mechanism 70 and a cam follower portion (second cam follower portion, cutter operation transmission portion) 81 included in the operation mechanism 80 are rotatably attached to the support shaft 29.

  As shown in FIG. 5, the cam follower portion 71 is a plate-like member that is rotatably attached to the support shaft 29 in the vicinity of the upper plate 21 a of the frame body 21. An arm 71a is formed in the cam follower portion 71, and a cam follower (first cam follower) 72 is rotatably attached to the lower surface of the intermediate portion of the arm 71a.

  As shown in FIG. 4, the cam follower portion 81 is rotatably attached to the support shaft 29 in the vicinity of the cam follower portion 71 and rotatably attached to the support shaft 29, and in the vicinity of the lower plate 21 b of the frame body 21. A lower plate 83, and an upper plate 82 and a connection plate 84 connected to the lower plate 83. The upper plate 82, the lower plate 83, and the connection plate 84 are integrally formed. The lower plate 83 is formed with a pair of arms 83a and 83b, and a cam follower (second cam follower) 85 is rotatably attached to the upper surface of the tip of the arm 83b. On the other hand, the arm 82 a is formed on the upper plate 82 so as to overlap the arm 83 a when viewed from the center line direction of the support shaft 29.

  As shown in FIGS. 4 and 5, the torsion coil spring 25 is rotatably attached to the support shaft 29 between the upper plate 82 and the lower plate 83 of the cam follower portion 81. One end portion 25 a of the torsion coil spring 25 is hooked on an intermediate portion of the arm 71 a of the cam follower portion 71, and the other end portion 25 b of the torsion coil spring 25 is hooked on the connection plate 84 of the cam follower portion 81. . The single torsion coil spring 25 urges the cam follower 72 of the cam follower portion 71 to contact the cam 62 of the cam mechanism 60, and causes the cam follower 85 of the cam follower portion 81 to contact the cam 63 of the cam mechanism 60. Be energized by. That is, the cam follower 72 and the cam follower 85 are attached to the support shaft 29 by the torsion coil spring 25 (that is, around the center line of the support shaft 29) in directions opposite to each other (that is, sandwiching the cam shaft 61). Be forced.

  As shown in FIG. 5, the rear end portion of the long connecting member 73 is rotatably connected to the distal end portion of the arm 71 a of the cam follower portion 71. As shown in FIG. 2 and FIG. 3, the yarn gathering lever body 74 is rotatably connected to the front end portion of the connecting member 73. The yarn gathering lever body 74 includes a support shaft 75 rotatably attached to the untwisting portion 40 so as to be substantially parallel to the support shaft 25, and a yarn gathering lever fixed to the upper end portion and the lower end portion of the support shaft 75, respectively. 74a, 74b. The front end portion of the connecting member 73 is rotatably connected to an arm 74c extending from the base end portion of the upper yarn shifting lever 74a. The cam follower portion 71, the connecting member 73, and the yarn shifting lever body 74 are included to constitute a yarn shifting mechanism 70A and a seam length adjusting mechanism 70C.

  A twisting lever body 76 is rotatably attached to the support shaft 75 of the yarn shifting lever body 74. The anti-twist lever body 76 includes a bracket 76c rotatably attached to the support shaft 75, and anti-twist levers 76a and 76b extending from the upper end and the lower end of the bracket 76c, respectively. Further, a torsion coil spring 77 that urges the anti-twist lever body 76 toward the yarn shifting lever body 74 is rotatably attached to the support shaft 75. Thereby, the unscrewing lever body 76 rotates to the untwisting portion 40 side together with the yarn shifting lever body 74. However, after the convex portion 76d provided on the bracket 76c comes into contact with the stopper 40a provided on the untwisting portion 40, only the yarn shifting lever body 74 rotates to the untwisting portion 40 side. A twist-preventing mechanism 70 </ b> B is configured including the cam follower portion 71, the connecting member 73, and the twist-preventing lever body 76.

  As shown in FIGS. 4 and 5, the rear end portion of a long connecting member (cutter operation transmitting portion) 86 formed with a bent portion 86 a is rotatable at the distal end portion of the arm 82 a of the cam follower portion 81. It is connected to. A cutter portion 87 for cutting the yarn end on the yarn feeding bobbin B side is rotatably connected to the front end portion of the connecting member 86. As shown in FIG. 3, the cutter unit 87 includes a fixed piece 87 a that is fixed to the lower surface of the guide plate 22, and a movable piece 87 b that is rotatably attached to the lower surface of the guide plate 22. The fixed piece 87a and the movable piece 87b form a pair with the guide groove 22b interposed therebetween. As shown in FIG. 4, the front end portion of the connecting member 86 is rotatably connected to an arm 87c that extends from the base end portion of the movable piece 87b.

  Similarly, the rear end portion of the long connecting member 86 formed with the bent portion 86a is rotatably connected to the distal end portion of the arm 83a of the cam follower portion 81. A cutter portion 87 for cutting the yarn end on the package P side is rotatably connected to the front end portion of the connecting member 86. The cutter unit 87 includes a fixed piece 87 a fixed to the upper surface of the guide plate 23 and a movable piece 87 b that is rotatably attached to the upper surface of the guide plate 23. The fixed piece 87a and the movable piece 87b form a pair with the guide groove 23a interposed therebetween. The front end portion of the connecting member 86 is rotatably connected to an arm 87c extending from the base end portion of the movable piece 87b.

  A yarn cutting mechanism 80 </ b> B whose operation is controlled by the cam mechanism 60 is configured including the cam follower portion 81, the connecting member 86, and the cutter portion 87. As described above, the yarn cutting mechanism 80B includes the cutter unit 87 that cuts the yarn ends on the package P side and the yarn feeding bobbin B side, the cam follower unit 81 that transmits the operation from the cam mechanism 60 to the cutter unit 87, and the connecting member 86. ,have.

  Further, as shown in FIGS. 2 and 4, a support shaft (second support shaft) 88 is fixed to the upper surface of the guide plate 22. An intermediate portion of a long connecting member (clamp motion transmitting portion) 89 is rotatably attached to the support shaft 88. A clamp portion 91 that holds the yarn end on the package P side is provided at the front end portion of the connecting member 89. The clamp portion 91 has a fixed piece 91 a fixed to the upper surface of the guide plate 22 and a movable piece 91 b formed at the front end portion of the connecting member 89. The fixed piece 91a and the movable piece 91b form a pair with the guide groove 22a interposed therebetween. A disk-shaped member (clamping action transmitting portion) 92 that contacts the connecting member 86 is rotatably attached to the rear end portion of the connecting member 89.

  A torsion coil spring (second urging member) 93 is rotatably attached to the support shaft 88 fixed to the upper surface of the guide plate 22. The torsion coil spring 93 biases the disk-shaped member 92 so as to contact the bent portion 86 a of the connecting member 86. Further, the torsion coil spring 93 biases the movable piece 91b so as to contact the fixed piece 91a. As a result, the bent portion 86 a has a function as a cam that transmits the operation to the clamp portion 91 via the disc-like member 92. The clamp 91 moves the disc-shaped member 92 by the connecting member 86 and rotates the connecting member 89, thereby gripping the yarn end on the package P side against the biasing force of the torsion coil spring 93. Perform the release action.

  Similarly, a support shaft 88 is fixed to the lower surface of the guide plate 23, and an intermediate portion of a long connecting member 89 is rotatably attached to the support shaft 88. A clamp portion 91 that grips the yarn end on the yarn feeding bobbin B side is provided at the front end portion of the connecting member 89. The clamp portion 91 has a fixed piece 91 a fixed to the lower surface of the guide plate 23 and a movable piece 91 b formed at the front end portion of the connecting member 89. The fixed piece 91a and the movable piece 91b are paired with the guide groove 23b interposed therebetween. A disc-shaped member 92 that contacts the connecting member 86 is rotatably attached to the rear end portion of the connecting member 89.

  A torsion coil spring 93 is rotatably attached to a support shaft 88 fixed to the lower surface of the guide plate 23. The torsion coil spring 93 biases the disk-shaped member 92 so as to contact the bent portion 86 a of the connecting member 86. Further, the torsion coil spring 93 biases the movable piece 91b so as to contact the fixed piece 91a. As a result, the bent portion 86 a has a function as a cam that transmits the operation to the clamp portion 91 via the disc-like member 92. The clamp 91 is moved by the connecting member 86 so that the disk-shaped member 92 is moved and the connecting member 89 is rotated, so that the clamping end 91 resists the urging force of the torsion coil spring 93 and the yarn end on the yarn supplying bobbin B side. An operation to release the grip is performed.

A thread gripping mechanism 80A whose operation is controlled by the thread cutting mechanism 80B is configured including the connecting member 89, the disk-shaped member 92, and the clamp 91. As described above, the yarn gripping mechanism 80A transmits the operation to the clamp portion 91 from the clamp portion 91 that grips the yarn end on the package P side and the yarn end on the yarn feeding bobbin B side, and the connecting member 86 of the yarn cutting mechanism 80B. A connecting member 89 and a disk-like member 92.
[Splicer splicing operation]

  The yarn splicing operation of the splicer 8 configured as described above will be described. As shown in FIG. 6, the yarn gathering levers 74a and 74b pivot to the untwisting portion 40 side, whereby the yarn end YB on the yarn feeding bobbin B guided by the lower yarn catching device 7 and the upper yarn catching device. The yarn end YP on the package P side guided by 12 is drawn toward the untwisting portion 40 side. Thereby, the yarn end YB is introduced into the guide groove 23b of the guide plate 23, the guide groove 22b of the guide plate 22, and the yarn joining nozzle 51 of the yarn joining portion 50. Similarly, the yarn end YP is introduced into the guide groove 22a of the guide plate 22, the guide groove 23a of the guide plate 23, and the yarn joining nozzle 51 of the yarn joining portion 50. Here, the yarn gathering levers 74a and 74b function as the yarn gathering mechanism 70A. The yarn ends YB and YP are arranged in the accommodating portion 52 via the guide inclined portion 53 when being introduced into the yarn joining nozzle 51.

  Subsequently, the yarn end YB introduced into the guide groove 23b of the guide plate 23 is gripped by the clamp portion 91 in the vicinity of the guide groove 23b. Similarly, the yarn end YP introduced into the guide groove 22a of the guide plate 22 is gripped by the clamp portion 91 in the vicinity of the guide groove 22a. Subsequently, the yarn end YB introduced into the guide groove 22b of the guide plate 22 is cut by the cutter portion 87 in the vicinity of the guide groove 22b. Similarly, the yarn end YP introduced into the guide groove 23a of the guide plate 23 is cut by the cutter portion 87 in the vicinity of the guide groove 23a. At this time, the cutting lengths of the yarn ends YB and YP are determined by the stop positions of the swiveling levers 74a and 74b.

  As a result, the tip portion of the cut yarn end YB is sucked into the untwisting nozzle 41 of the untwisting portion 40 via the suction port 41a and is ejected into the untwisting nozzle 41 from the injection hole 42. Untwisted by air. Similarly, the tip portion of the cut yarn end YP is sucked into the untwisting nozzle 43 of the untwisting portion 40 through the suction port 43a and is ejected into the untwisting nozzle 43 from the injection hole 44. Untwisted by air.

  Subsequently, when the yarn shifting levers 74a and 74b further pivot toward the untwisting portion 40, the tip portions of the untwisted yarn ends YB and YP are drawn out from the untwisting nozzles 41 and 43. Then, the twisted levers 76a and 76b swung together with the yarn shifting levers 74a and 74b hold the untwisted yarn ends YB and YP in the vicinity of the yarn joining portion 50. Here, the twist prevention levers 76a and 76b are stopped by contact with the stopper 40a. As a result, the tip portions of the untwisted yarn ends YB and YP are twisted together by the yarn splicing air that is injected from the injection hole 54 into the accommodating portion 52. At this time, the length of the joint between the yarn ends YB and YP is determined by the stop position of further turning of the yarn moving levers 74a and 74b. Here, the yarn shifting levers 74a and 74b function as a seam length adjusting mechanism 70C.

Subsequently, the yarn shifting levers 74a and 74b and the twisting levers 76a and 76b rotate in the reverse direction, and the clamp portion 91 releases the grip. As a result, the spliced yarn end YB and yarn end YP (that is, yarn Y) return to the yarn path on the front side of the splicer 8.
[Configuration and operation of operation mechanism]

  Next, the yarn shifting mechanism 70A, the twist preventing mechanism 70B, the seam length adjusting mechanism 70C, the yarn gripping mechanism 80A, and the yarn cutting mechanism 80B will be described in more detail. 7 to 22, (a) shows the operation of the yarn shifting mechanism 70A, the twist-preventing mechanism 70B, and the seam length adjusting mechanism 70C, (b) shows the operation of the yarn gripping mechanism 80A, and (c). Indicates the operation of the yarn cutting mechanism 80B.

  As shown in FIG. 7, the cam 62 is formed with a pattern portion 62a along the outer periphery on one side of the plane passing through the initial position 62i and the center line CL of the cam shaft 61, and the other of the planes A pattern portion 62b is formed along the outer periphery on the side of the pattern. That is, the pattern portions 62 a and 62 b are formed in two patterns in each of a range of 0 ° to less than 180 ° and a range of 180 ° to less than 360 ° with respect to the rotation center of the cam 62. Each pattern part 62a, 62b corresponds to each of a plurality of processes performed by the splicer 8 (more specifically, a plurality of operations performed by the operation mechanism 70).

  The cam 63 is formed with a pattern portion 63a along the outer periphery on one side of the plane passing through the initial position 63i and the center line CL of the cam shaft 61, and along the outer periphery on the other side of the plane. Thus, a pattern portion 63b is formed. That is, the pattern portions 63a and 63b are formed in two patterns in each of a range of 0 ° to less than 180 ° and a range of 180 ° to less than 360 ° with respect to the rotation center of the cam 63. Each pattern part 63a, 63b corresponds to each of a plurality of processes performed by the splicer 8 (more specifically, a plurality of operations performed by the operation mechanism 80).

At the start of each operation, the cam follower 72 is in contact with the initial position 62 i of the cam 62 and the cam follower 85 is in contact with the initial position 63 i of the cam 63. In this case (that is, when the pattern portions 62a and 62b are at the initial position 62i and the pattern portions 63a and 63b are at the initial position 63i), the magnet (first magnet) 31 embedded in the cam 63 is replaced with the splicer. It opposes the magnetic sensor (sensor) 30 installed on the lower plate 21b of the frame body 21 (see FIG. 5). The magnetic sensor 30 detects the polarity (one polarity) of the magnet 31. A magnet (second magnet) embedded in the cam 63 so as to be adjacent to both sides of the magnet 31 in the rotation direction of the cam 63 has a polarity opposite to that of the magnet 31 (the other polarity). As a result, it is detected that the pattern portions 62a and 62b are at the initial position 62i and the pattern portions 63a and 63b are at the initial position 63i.
[First operation of operation mechanism]

  When the stepping motor 24 rotates in one direction from the initial state and the cam shaft 61 and the cams 62 and 63 rotate in the direction of the arrow A1, the operation of the operation mechanism 70 is controlled by the pattern portion 62a of the cam 62, and the operation The operation of the mechanism 80 is controlled by the pattern portion 63 a of the cam 63. As shown in FIG. 8, when the cam shaft 61 and the cams 62 and 63 rotate about 8 degrees from the initial state, the torsion angle θ of the torsion coil spring 25 becomes the maximum value.

  Further, as shown in FIG. 9, when the cam shaft 61 and the cams 62, 63 rotate about 38 degrees from the initial state, the connecting member 73 moves in the direction of the arrow A11 via the cam follower portion 71, and the yarn shifting lever 74a. , 74b and the anti-twisting levers 76a, 76b pivot in the direction of arrow A12 (see (a) of FIG. 9). At this time, the torsion angle θ of the torsion coil spring 25 becomes the minimum value. The yarn end YB on the yarn feeding bobbin B side is introduced into the guide groove 23b of the guide plate 23, the guide groove 22b of the guide plate 22 and the yarn joining nozzle 51 of the yarn joining portion 50 by turning the yarn shifting levers 74a and 74b. Is done. Similarly, the yarn end YP on the package P side is introduced into the guide groove 22a of the guide plate 22, the guide groove 23a of the guide plate 23, and the yarn joining nozzle 51 of the yarn joining portion 50.

  Further, as shown in FIG. 10, when the cam shaft 61 and the cams 62, 63 rotate about 60 degrees from the initial state, the connecting member 86 moves in the arrow A13 direction via the cam follower portion 81 ((b) of FIG. )reference). When the bent portion 86 a of the connecting member 86 is separated from the disk-shaped member 92, the connecting member 89 is urged by the torsion coil spring 93, and the movable piece 91 b of the clamp portion 91 closes around the support shaft 88. Rotate. Thereby, the yarn ends YB and YP are gripped. Further, as shown in FIG. 11, when the cam shaft 61 and the cams 62 and 63 rotate about 75 degrees from the initial state, the connecting member 86 further moves in the arrow A13 direction via the cam follower portion 81, and the cutter portion 87. The movable piece 87b rotates in a closing direction around a support shaft 95 provided on the guide plates 22 and 23 (see FIG. 11C). Thereby, the yarn ends YB and YP are cut. At this time, the cutting lengths of the yarn ends YB and YP are determined by the stop positions of the swiveling levers 74a and 74b.

  Further, as shown in FIGS. 12 and 13, the cam shaft 61 and the cams 62 and 63 gradually rotate from the initial state to 105 degrees and 135 degrees. During this time, the tip portions of the cut yarn ends YB and YP are untwisted at the untwisting portion 40. During this time, the cutter unit 87 remains closed. However, since a gripping mechanism is not added to the cutter unit 87 in this case, immediately after the cutter unit 87 is closed, the leading ends of the cut yarn ends YB and YP Will be free.

  Further, as shown in FIGS. 13 and 14, the connecting member 73 is further moved in the direction of arrow A11 via the cam follower portion 71 until the cam shaft 61 and the cams 62 and 63 rotate about 165 degrees from the initial state. The yarn shifting levers 74a and 74b and the twisting prevention levers 76a and 76b further pivot to the rear side in the arrow A12 direction (see FIGS. 13 and 14A). However, the anti-twist levers 76a and 76b are stopped halfway by contact with the stopper 40a. By further turning of the yarn shifting levers 74a and 74b, the tip portions of the untwisted yarn ends YB and YP are drawn out from the untwisting nozzles 41 and 43. Then, the untwisted ends of the yarn ends YB and YP are twisted together at the yarn joining portion 50 while being held down by the twist-preventing levers 76a and 76b. At this time, the length of the joint between the yarn ends YB and YP is determined by the stop position of further turning of the yarn moving levers 74a and 74b.

Here, until the stepping motor 24 rotates in the other direction, the cam shaft 61 and the cams 62, 63 rotate in the direction opposite to the arrow A1, and returns to the initial state (that is, the pattern portion 62a is at the initial position 62i). The operation described above is performed in reverse until it is detected that the pattern portion 63a is at the initial position 63i). In other words, the yarn shifting levers 74a and 74b and the twisting levers 76a and 76b rotate in the direction opposite to the arrow A12, and the clamp portion 91 releases the grip. As a result, the spliced yarn end YB and yarn end YP (that is, yarn Y) return to the yarn path on the front side of the splicer 8.
[Second operation of the operation mechanism]

  On the other hand, as shown in FIG. 15, when the stepping motor 24 rotates in the other direction from the initial state and the cam shaft 61 and the cams 62 and 63 rotate in the direction of the arrow A2, the operation of the operation mechanism 70 is as follows. The pattern portion 62b of the cam 63 controls the operation of the operating mechanism 80. As shown in FIG. 16, when the cam shaft 61 and the cams 62 and 63 rotate about 6 degrees from the initial state, the torsion angle θ of the torsion coil spring 25 becomes the maximum value.

  Further, as shown in FIG. 17, when the cam shaft 61 and the cams 62, 63 rotate about 40 degrees from the initial state, the connecting member 73 moves in the direction of arrow A11 via the cam follower portion 71, and the yarn shifting lever 74a. , 74b and the anti-twist levers 76a, 76b pivot in the direction of arrow A12 (see FIG. 17A). At this time, the torsion angle θ of the torsion coil spring 25 becomes the minimum value. The yarn end YB on the yarn feeding bobbin B side is introduced into the guide groove 23b of the guide plate 23, the guide groove 22b of the guide plate 22 and the yarn joining nozzle 51 of the yarn joining portion 50 by turning the yarn shifting levers 74a and 74b. Is done. Similarly, the yarn end YP on the package P side is introduced into the guide groove 22a of the guide plate 22, the guide groove 23a of the guide plate 23, and the yarn joining nozzle 51 of the yarn joining portion 50.

  Further, as shown in FIG. 18, when the cam shaft 61 and the cams 62, 63 rotate about 60 degrees from the initial state, the connecting member 86 moves in the arrow A13 direction via the cam follower portion 81 ((b) of FIG. )reference). When the bent portion 86 a of the connecting member 86 is separated from the disk-shaped member 92, the connecting member 89 is urged by the torsion coil spring 93, and the movable piece 91 b of the clamp portion 91 closes around the support shaft 88. Rotate. Thereby, the yarn ends YB and YP are gripped. Further, as shown in FIG. 19, when the cam shaft 61 and the cams 62 and 63 rotate about 75 degrees from the initial state, the connecting member 86 further moves in the direction of the arrow A13 via the cam follower portion 81, and the cutter portion 87. The movable piece 87b rotates around the support shaft 95 in the closing direction (see FIG. 19C). Thereby, the yarn ends YB and YP are cut. At this time, the cutting lengths of the yarn ends YB and YP are determined by the stop positions of the swiveling levers 74a and 74b.

  Further, as shown in FIG. 20, when the cam shaft 61 and the cams 62 and 63 rotate about 105 degrees from the initial state, the connecting member 86 moves in the direction of arrow A14 via the cam follower portion 81, and the cutter portion 87 The movable piece 87b rotates in the opening direction around the support shaft 95 (see FIG. 20C). Such an operation of the cutter unit 87 is performed when the cutter unit 87 itself has a gripping mechanism for gripping the cut yarn ends YB and YP. Thus, for example, when the yarn Y is rich in elasticity, the cam shaft 61 and the cams 62 and 63 rotate about 75 degrees to cut the thread ends YB and YP, and then rotate about 105 degrees to hold the thread Y. By releasing the gripping of the yarn ends YB and YP by the cutter portion 87 until the cutter portion 87 having a mechanism is opened, the yarn ends YB and YP are prevented from being rapidly contracted, and the untwisting nozzles 41 and 43 are operated. Then, the yarn ends YB and YP are released after the yarn is ready to be sucked. Therefore, the yarn ends YB and YP can be reliably sucked into the untwisting nozzles 41 and 43 of the untwisting portion 40. Even at this time, since the bent portion 86a of the connecting member 86 is separated from the disk-like member 92, the gripping of the yarn ends YB and YP by the clamp portion 91 is maintained. Furthermore, as shown in FIG. 21, the cam shaft 61 and the cams 62 and 63 gradually rotate to 135 degrees from the initial state. During this time, the tip portions of the cut yarn ends YB and YP are untwisted at the untwisting portion 40.

  Further, as shown in FIGS. 21 and 22, the connecting member 73 is further moved in the direction of the arrow A11 via the cam follower portion 71 until the cam shaft 61 and the cams 62, 63 rotate about 165 degrees from the initial state. The yarn shifting levers 74a and 74b and the twisting levers 76a and 76b further rotate in the direction of the arrow A12 (see FIG. 22A). However, the anti-twist levers 76a and 76b are stopped halfway by contact with the stopper 40a. By further turning of the yarn shifting levers 74a and 74b, the tip portions of the untwisted yarn ends YB and YP are drawn out from the untwisting nozzles 41 and 43. Then, the untwisted ends of the yarn ends YB and YP are twisted together at the yarn joining portion 50 while being held down by the twist-preventing levers 76a and 76b. At this time, the length of the joint between the yarn ends YB and YP is determined by the stop position of further turning of the yarn moving levers 74a and 74b.

Here, until the stepping motor 24 rotates in one direction, the cam shaft 61 and the cams 62, 63 rotate in the opposite direction to the arrow A2, and return to the initial state (that is, the pattern portion 62b is at the initial position 62i). In addition, until the pattern portion 63b is detected at the initial position 63i), the above-described operation is performed in reverse. In other words, the yarn shifting levers 74a and 74b and the twisting levers 76a and 76b rotate in the direction opposite to the arrow A12, and the clamp portion 91 releases the grip. As a result, the spliced yarn end YB and yarn end YP (that is, yarn Y) return to the yarn path on the front side of the splicer 8.
[Action and effect]

  As described above, in the splicer 8, the cam follower 72 of the operation mechanism 70 is urged by the single torsion coil spring 25 so as to contact the cam 62 of the cam mechanism 60, and the cam follower 85 of the operation mechanism 80 is It is urged to come into contact with 60 cams 63. Thus, since the cam follower 72 and the cam follower 85 are urged by the common torsion coil spring 25, the number of parts can be reduced, and as a result, the splicer 8 can be downsized.

  Further, since the cam follower portion 71 to which the cam follower 72 is attached and the cam follower portion 81 to which the cam follower 85 is attached are rotatably attached to the common support shaft 29, the cam follower 72 and the cam follower 85 by the common torsion coil spring 25 are provided. Can be easily realized. Furthermore, since the torsion coil spring 25 is rotatably attached to the support shaft 29, the urging of the cam follower 72 against the cam 62 and the urging of the cam follower 85 against the cam 63 can be realized in a balanced manner. In addition, since the cam follower 72 and the cam follower 85 are biased so as to sandwich the cam shaft 61 of the cam mechanism 60, the cam follower 72 and the cam follower 85 can be biased efficiently while repelling each other. it can.

  Further, the range in which the angle formed by the cam follower 72 and the cam follower 85 with respect to the support shaft 29 changes is 0 degree or more and less than 40 degrees (more preferably, 0 degree or more and less than 30 degrees). Thereby, the difference between the minimum value (in the case of FIGS. 9 and 17 described above) and the maximum value (in the case of FIGS. 8 and 16 described above) of the torsion angle θ of the torsion coil spring 25 is also not less than 0 degrees and less than 40 degrees. (More preferably, 0 degree or more and less than 30 degree). Therefore, it is possible to stabilize the urging force by suppressing the urging force of the cam follower 72 against the cam 62 and the urging force of the cam follower 85 against the cam 63 from greatly changing. This is because when the cam follower 72 comes into contact with the convex portion of the cam 62, the cam follower 85 comes into contact with the concave portion of the cam 63 and when the cam follower 72 comes into contact with the concave portion of the cam 62. This is realized by configuring so that 85 contacts.

  Further, the winding unit 1 includes a splicer 8 that can be miniaturized as described above. Therefore, the bobbin support 2, the yarn unwinding assisting device 3, the pre-clearer 4, the gate type tensioner 5, the tension sensor 6, the lower thread catching device 7, the splicer 8, the cutter 9, the yarn clearer 11, the upper thread catching device 12 and the winding Even if many configurations such as the portion 13 are provided along the yarn path together with the splicer 8, the height of the winding unit 1 from the bobbin support portion 2 to the winding portion 13 can be suppressed. As a result, the package P can be easily attached to and detached from the winding unit 13 located on the upper side.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the above embodiment is a case where the splicer 8 is applied to the winding unit 1 of the automatic winder. However, the present invention is not limited to this, and the yarn splicing device of the present invention corresponding to the splicer 8 includes a spinning device. The present invention may be applied to a winding device or a work cart configured to be movable between a plurality of winding units.

  The operation mechanism 70 only needs to include at least one of the yarn shifting mechanism 70A, the twist prevention mechanism 70B, and the seam length adjustment mechanism 70C. The operation mechanism 80 includes the yarn gripping mechanism 80A and the yarn cutting mechanism 80B. It only needs to include at least one. Further, instead of the torsion coil spring 25, an urging member such as a leaf spring, a tension spring, or a compression spring may be used. The cam mechanism 60 may use a cylinder cam or a groove cam instead of the cams 62 and 63 which are plate cams. The winding unit 1 may include a yarn traveling state detection unit that detects the state of the traveling yarn Y, such as the traveling speed and the feed length of the yarn Y.

  DESCRIPTION OF SYMBOLS 1 ... Winding unit (yarn winding device), 2 ... Bobbin support part (yarn supply part), 3 ... Yarn unwinding assisting device (yarn unwinding assisting part), 5 ... Gate type tensioner (tension applying part), 6 ... Tension sensor (yarn tension measuring unit), 7 ... lower thread catching device (supply side yarn catching unit), 8 ... splicer (yarn splicing device), 11 ... yarn clearer (yarn defect detecting unit), 12 ... upper thread catching device ( Winding side yarn catching portion), 13 ... Winding portion, 24 ... Stepping motor (drive source), 25 ... Torsion coil spring (biasing member), 29 ... Support shaft, 60 ... Cam mechanism, 61 ... Cam shaft, 62 ... Cam (first cam), 63 ... Cam (second cam), 70 ... Operation mechanism (first operation mechanism), 70A ... Yarn shifting mechanism, 70B ... Anti-twist mechanism, 70C ... Seam length adjustment mechanism, 71 ... Cam follower portion (first cam follower portion), 72... Cam follower (first force follower) Follower), 80 ... operating mechanism (second operating mechanism), 80A ... thread gripping mechanism, 80B ... thread cutting mechanism, 81 ... cam follower part (second cam follower part), 85 ... cam follower (second cam follower), Y ... thread, YB, YP ... Yarn end.

Claims (7)

A yarn joining device that joins yarn ends together,
A driving source;
A cam mechanism driven by the drive source;
A first operation mechanism and a second operation mechanism whose operations are controlled by the cam mechanism;
A single urging member that urges the first operating mechanism and the second operating mechanism to contact the cam mechanism,
The first operating mechanism includes a yarn shifting mechanism that moves the yarn ends, a twist-preventing mechanism that presses the yarn ends when twisting the yarn ends, and a seam length that adjusts the length of the seam between the yarn ends. Including at least one adjustment mechanism;
The yarn splicing device, wherein the second operation mechanism includes at least one of a yarn gripping mechanism that grips the yarn end and a yarn cutting mechanism that cuts the yarn end. The first operation mechanism includes a first cam follower portion that is urged by the urging member so as to contact the cam mechanism.
The second operation mechanism has a second cam follower portion urged by the urging member so as to contact the cam mechanism,
The yarn splicing device according to claim 1, further comprising a single support shaft on which the first cam follower portion and the second cam follower portion are pivotably attached.   3. The yarn splicing device according to claim 2, wherein the urging member is a torsion coil spring and is rotatably attached to the support shaft. The cam mechanism has a single cam shaft provided substantially parallel to the support shaft, and a first cam and a second cam fixed to the cam shaft,
The first cam follower portion has a first cam follower that contacts the first cam,
The second cam follower portion has a second cam follower that contacts the second cam,
4. The yarn splicing device according to claim 3, wherein the first cam follower and the second cam follower are urged in a reverse rotation direction with respect to the support shaft by the urging member.   5. The yarn splicing device according to claim 4, wherein a range in which an angle formed by the first cam follower and the second cam follower with respect to the support shaft changes is 0 degree or more and less than 40 degrees. The yarn joining device according to any one of claims 1 to 5,
A yarn supply unit for supporting a yarn supply bobbin, a yarn unwinding auxiliary unit for controlling a balloon of yarn unwound from the yarn supply bobbin, a tension applying unit for applying a predetermined tension to the traveling yarn, and a yarn end on the supply side A supply-side yarn catcher that delivers the yarn to the yarn joining device, a take-up yarn catcher that delivers the winding-side yarn end to the yarn joining device, a yarn defect detector that detects the yarn defect of the traveling yarn, and the A yarn winding device, wherein a winding portion for winding a yarn around a package is provided along a yarn path together with the yarn joining device.   A yarn tension measuring unit for measuring the tension of the yarn applied by the tension applying unit, and a yarn traveling state detecting unit for detecting the state of the traveling yarn are further provided along the yarn path. The yarn winding device according to claim 6, characterized in that:

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