JP2014234311A - Yarn splicing device, winding unit, textile machine and yarn splicing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn splicing device and a yarn splicing method that can flexibly adjust the length of a yarn end taken into an untwisting portion as well as a winding unit and a textile machine comprising the yarn splicing device.SOLUTION: A yarn splicing device 10 comprises: a first holding portion 60A for holding a yarn end YA; a first cutting portion 70A for cutting the yarn end YA; a first untwisting portion 40A that takes in and untwists the cut yarn end YA; a second holding portion 60B for holding a yarn end YB; a second cutting portion 70B for cutting the yarn end YB; a second untwisting portion 40B that takes in and untwists the cut yarn end YB; an adjustment portion that adjusts the length of the yarn end YA taken into the first untwisting portion 40A and the length of the yarn end YB taken into the second untwisting portion 40B; a yarn splicing portion 50 that twists the untwisted yarn end YA and the untwisted yarn end YB together; and an independent actuator 29 that opens and closes the first cutting portion 70A and the second cutting portion 70B.

Description

  The present invention relates to a yarn joining device, a winding unit, a textile machine, and a yarn joining method.

  In a yarn splicing device installed in a textile machine such as an automatic winder, it is important to adjust the untwisted length of the yarn end as an element to achieve proper yarn splicing for any yarn type It is. For example, Patent Document 1 describes a technique for adjusting the length of the yarn end taken into the untwisting portion by using a guide member that bends the yarn.

Chinese Patent Application Publication No. 10165241

  By the way, like the technique of patent document 1, when using a guide member in order to adjust the length of the yarn end taken in by the untwisting part, the cutting part which cut | disconnects a yarn end is common with a guide member. When operated by a drive source, it becomes difficult to flexibly adjust the length of the yarn end taken into the untwisting portion.

  Accordingly, the present invention provides a yarn joining device and a yarn joining method capable of flexibly adjusting the length of the yarn end taken into the untwisting portion, and a winding unit and a textile machine equipped with such a yarn joining device. The purpose is to provide.

  The yarn splicing device of the present invention is a yarn splicing device that splices yarn ends, and includes a first gripping portion that grips one yarn end, and a state where one yarn end is gripped by the first gripping portion. A first cutting portion for cutting the yarn end of the yarn, and a first untwisting in which one yarn end cut by the first cutting portion is taken in and untwisted in a state where one yarn end is held by the first holding portion A second gripping part for gripping the other thread end, a second cutting part for cutting the other thread end in a state where the other thread end is gripped by the second gripping part, and a second gripping part. In the state where the other yarn end is gripped, the length of one yarn end taken into the second untwisting portion for taking in and untwisting the other yarn end cut by the second cutting portion and the first untwisting portion And the adjusting unit that adjusts the length of the other yarn end taken into the second untwisting unit, and one yarn end is gripped by the first gripping unit. And while the other yarn end is gripped by the second gripping portion, one yarn end untwisted by the first untwisting portion and the other yarn end untwisted by the second untwisting portion A yarn splicing section that twists together, a first drive source that drives the first gripping section and the second gripping section, and a second drive source that opens and closes the first cutting section and the second cutting section.

  The yarn splicing device is independently provided with a second drive source that opens and closes the first cutting portion and the second cutting portion (that is, a drive source dedicated to the first cutting portion and the second cutting portion). Therefore, the operation of the other configuration with respect to the operation of the adjusting unit that adjusts the length of one yarn end taken into the first untwisting portion and the length of the other yarn end taken into the second untwisting portion. One yarn end and the other yarn end can be cut at an appropriate timing without being affected by the above. Therefore, according to this yarn splicing device, the length of the yarn end taken into each of the first untwisting portion and the second untwisting portion can be flexibly adjusted.

  The first gripping portion functions as at least a part of the adjusting portion by moving the first gripping position of one yarn end in the first gripping portion, and the second gripping portion is the other thread in the second gripping portion. The second gripping position at the end may be moved to function as at least a part of the adjustment unit. Thus, the structure of the yarn joining device can be simplified by using the first gripping portion and the second gripping portion as at least a part of the adjustment portion.

  The yarn joining device includes a first guide portion that guides one yarn end from the first untwisting portion to the yarn joining portion, and a second guide portion that guides the other yarn end from the second untwisting portion to the yarn joining portion; The first guide part functions as at least a part of the adjustment part by moving the first guide position of one yarn end of the first guide part, and the second guide part is a second guide part. The second guide position of the other yarn end in the part may be moved to function as at least a part of the adjustment part. Thus, the structure of the yarn joining device can be simplified by using the first guide part and the second guide part as at least a part of the adjustment part.

  The winding unit of the present invention includes the above-described yarn joining device, a yarn supplying unit that supplies the yarn, a winding unit that winds the yarn, at least the adjusting unit of the yarn joining device, and the first cutting unit and the second cutting unit. A control unit for controlling the operation.

  According to this winding unit, the length of the yarn end taken into each of the first untwisting portion and the second untwisting portion of the yarn joining device is appropriately set according to the yarn type of the yarn to be wound, etc. Can do.

  The winding unit has the length of one yarn end adjusted by the operation of the adjusting unit and taken into the first untwisting unit, and the other yarn end adjusted by the operation of the adjusting unit and taken into the second untwisting unit You may further provide the input part for setting the length of with respect to a control part. According to this configuration, the operator can set the length of the yarn end taken into each of the first untwisting part and the second untwisting part of the yarn joining device via the input unit.

  The textile machine of the present invention includes a plurality of the above-described winding units and an upper control unit that regulates each control unit of the winding unit.

  According to this textile machine, the length of the yarn end taken into each of the first untwisting portion and the second untwisting portion of the yarn joining device can be set simultaneously for a plurality of winding units.

  In each yarn splicing device of the winding unit, the textile machine is adjusted by the operation of the adjustment unit and adjusted by the operation of the adjustment unit and the length of one yarn end that is taken into the first untwisting unit and the second. You may further provide the high-order input part for setting the length of the other yarn end taken in by the untwisting part with respect to each of a control part via a high-order control part. According to this structure, the length of the yarn end taken into each of the first untwisting part and the second untwisting part of the yarn joining device can be set by the operator via the upper input part.

  The yarn joining method of the present invention is a yarn joining method in which yarn ends are joined together, and a first holding step in which the first holding portion holds one yarn end, and one yarn end is held by the first holding portion. In the state where the first cutting portion cuts one yarn end, and in the state where one yarn end is gripped by the first gripping portion, the first untwisting portion is moved by the first cutting portion. A first untwisting step of taking in one of the cut yarn ends and untwisting, a second holding step in which the second gripping portion grips the other yarn end, and the other gripping end being gripped by the second gripping portion. In the state where the second cutting portion cuts the other yarn end in the state where the second yarn end is gripped by the second gripping portion, the second untwisting portion is A second untwisting step of taking in the other cut yarn end and untwisting, a length of one yarn end taken into the first untwisting portion by the adjusting portion, and An adjustment step for adjusting the length of the other yarn end taken into the second untwisting portion, a state where one yarn end is gripped by the first gripping portion, and the other yarn end is gripped by the second gripping portion The yarn joining portion includes a yarn joining step of twisting one yarn end untwisted by the first untwisting portion and the other yarn end untwisted by the second untwisting portion, In each of the first gripping process and the second gripping process, the first driving source drives the first gripping part and the second gripping part, and in each of the first cutting process and the second cutting process, the second driving source is the first. The cutting part and the second cutting part are opened and closed.

  According to this yarn joining method, the length of the yarn end taken into each of the first untwisting portion and the second untwisting portion can be flexibly adjusted for the same reason as in the above-described yarn joining device. In addition, an adjustment process may be performed after a 1st cutting process, and may be performed before a 1st cutting process. Similarly, the adjustment step may be performed after the second cutting step or may be performed before the second cutting step.

  In the adjustment step, the first gripping part functions as at least a part of the adjustment part by moving the first gripping position of one yarn end of the first gripping part, and the second gripping part is the second gripping part. By moving the second gripping position of the other yarn end of the thread, it may function as at least a part of the adjustment unit. As described above, by using the first gripping portion and the second gripping portion as at least a part of the adjustment portion, the structure of the yarn joining device in which the yarn joining method is performed can be simplified.

  In the adjustment step, the first guide portion that guides one yarn end from the first untwisting portion to the yarn joining portion moves the first guide position of one yarn end in the first guide portion, thereby The second guide portion that functions as at least a part and guides the other yarn end from the second untwisting portion to the yarn joining portion moves the second guide position of the other yarn end in the second guide portion, It may function as at least a part of the adjustment unit. Thus, the structure of the yarn joining device in which the yarn joining method is implemented can be simplified by using the first guide portion and the second guide portion as at least a part of the adjusting portion.

  According to the present invention, a yarn joining device and a yarn joining method capable of flexibly adjusting the length of the yarn end taken into the untwisting portion, and a winding unit and a textile machine including such a yarn joining device are provided. It becomes possible to provide.

It is a front view of the winding unit of one embodiment of the present invention. It is a front view of the yarn splicing device of FIG. It is a top view of the yarn splicing device of FIG. It is a partial top view for demonstrating operation | movement of the yarn joining apparatus of FIG. It is a partial top view for demonstrating operation | movement of the yarn joining apparatus of FIG. It is a conceptual diagram for demonstrating operation | movement of the yarn joining apparatus of FIG. It is a conceptual diagram for demonstrating operation | movement of the yarn joining apparatus of FIG.

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, the winding unit 1 winds the yarn Y from the yarn supplying bobbin B to the 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. In addition, the automatic winder which is a textile machine is comprised by arranging the several winding unit 1 in parallel.

  The winding unit 1 includes a bobbin support portion (yarn feeding portion) 2, a yarn unwinding assist device 3, a pre-clearer 4, a gate type tensioner 5, a tension sensor 6, a lower thread catching device 7, a yarn joining device 10, a cutter 9, The yarn clearer 11, the upper thread catching device 12, and the winding unit 13 are provided in this order from the upstream side (here, the lower side) along the yarn path that is the traveling path of the yarn Y. Each of these components is attached to the machine base 8.

  The bobbin support unit 2 supports the yarn feeding bobbin B in an upright state and supplies the yarn Y. 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 the yarn defect is detected by the yarn clearer 11. The yarn joining device 10 includes a yarn end on the package P side (one yarn end) and a yarn end on the yarn feeding bobbin B side (the other yarn end) when the cutter 9 cuts the yarn Y or when the yarn Y is broken. To succeed.

  The lower thread catching device 7 is attached to the machine base 8 so as to be rotatable about an axis α, and a suction port 7a is provided at the rotating end. The suction port 7 a is rotated between the upper part of the yarn joining device 10 and the lower part of the preclearer 4. The lower yarn catching device 7 rotates the suction port 7a to the lower side of the preclearer 4 when the yarn Y is cut by the cutter 9 or when the yarn Y is broken, and the lower yarn end is sucked by the suction port 7a. Thereafter, the suction port 7 a is rotated to the upper side of the yarn joining device 10, and the lower yarn end is delivered to the yarn joining device 10.

  The upper thread catching device 12 is attached to the machine base 8 so as to be rotatable about the axis β, and a suction port 12a is provided at the rotating end. The suction port 12 a is rotated between the lower part of the yarn joining device 10 and the winding unit 13. When the yarn Y is cut by the cutter 9 or when the yarn Y is broken, the upper yarn catching device 12 rotates the suction port 12a toward the winding unit 13 and sucks the upper yarn end through the suction port 12a. Thereafter, the suction port 12 a is rotated to the lower side of the yarn joining device 10, and the upper yarn end is delivered to the yarn joining device 10.

  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 14 in which a drum groove 14a is formed, and a cradle 15 that rotatably supports the package P. The cradle 15 brings the surface of the package P into contact with the surface of the winding drum 14 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 14 with a motor to rotate the package P.

The machine base 8 is provided with a control unit 16, an input unit 17, and a display unit 18. The control unit 16 controls each configuration of the winding unit 1. The input unit 17 is, for example, an operation button or the like, and is used when an operator sets various values for the control unit 16. The display unit 18 displays the operation status of the winding unit 1 and the like. In addition, the control part 16 transmits / receives various information regarding a winding operation | movement between the high-order control parts with which an automatic winder is provided. The host control unit controls the control unit 16 of each winding unit 1 and controls the entire automatic winder.
[Configuration of yarn splicing device]

  Next, the configuration of the above-described yarn joining device 10 will be described. In the following description, for convenience, the package P side is referred to as the upper side, the yarn feeding bobbin B side as the lower side, the yarn path side with respect to the yarn joining device 10 as the front side, and the opposite side as the rear side.

  As shown in FIGS. 2 and 3, the yarn joining device 10 is disposed on the front side of the first untwisting part 40A and the second untwisting part 40B, and the first untwisting part 40A and the second untwisting part 40B. A pair of yarn shifting levers 81 that pivot so as to sandwich the first untwisting portion 40A and the second untwisting portion 40B, and a pair of twisting levers 82 that pivot so as to sandwich the yarn joining portion 50. And. The yarn splicing device 10 is attached to the machine base 8 via a frame body 20 that supports each component.

  The first guide plate 21 and the second guide plate 22 are respectively arranged on the upper side and the lower side of the first untwisting part 40A and the second untwisting part 40B so as to face each other with the yarn joining part 50 interposed therebetween. The first guide plate 21 is formed with a guide groove 21a and a guide groove 21b, and the second guide plate 22 is formed with a guide groove 22a and a guide groove 22b. The guide groove 21a of the first guide plate 21 is opposed to the guide groove 22a of the second guide plate 22 in the vertical direction, and the guide groove 21b of the first guide plate 21 is the guide of the second guide plate 22 in the vertical direction. Opposite the groove 22b.

  The upper yarn end YA drawn by the yarn moving lever 81 (that is, the upper yarn end YA guided by the upper yarn catching device 12) is introduced into the guide groove 21a and the guide groove 22a opposed in the vertical direction. . On the other hand, in the guide groove 21b and the guide groove 22b opposed in the vertical direction, the lower yarn end YB attracted by the yarn gathering lever 81 (that is, the lower yarn end YB guided by the lower yarn catching device 7). Is introduced.

  A first grip 60A is provided above the first guide plate 21, and a first cutting portion 70A is provided above the second guide plate 22. The first gripping portion 60A grips the upper yarn end YA introduced into the guide groove 21a at the first gripping position 69A. The first cutting unit 70A cuts the upper yarn end YA introduced into the guide groove 22a at the first cutting position 79A in a state where the upper yarn end YA is held by the first holding unit 60A.

  Further, a second grip 60B is provided below the second guide plate 22, and a second cutting portion 70B is provided below the first guide plate 21. The second grip 60B grips the lower yarn end YB introduced into the guide groove 22b at the second grip position 69B. The second cutting portion 70B cuts the lower yarn end YB introduced into the guide groove 21b at the second cutting position 79B in a state where the lower yarn end YB is gripped by the second gripping portion 60B.

  As described above, the first guide plate 21 is disposed between the first gripping part 60A and the first cutting part 70A, and the first gripping part 60A and the first cutting part 70A face each other (that is, the first cutting part 70A). The movement of the upper yarn end YA in the first direction (here, the left-right direction) perpendicular to the direction along the yarn path) is restricted. Further, the second guide plate 22 is disposed between the second gripping portion 60B and the second cutting portion 70B, and the second gripping portion 60B and the second cutting portion 70B face each other (that is, The movement of the lower yarn end YB in the second direction (here, the left-right direction) perpendicular to the direction along the yarn path is restricted.

  The first untwisting portion 40A takes in and untwists the upper yarn end YA cut by the first cutting portion 70A in a state where the upper yarn end YA is held by the first holding portion 60A. The second untwisting portion 40B takes in and untwists the lower yarn end YB cut by the second cutting portion 70B in a state where the lower yarn end YB is held by the second holding portion 60B.

  The yarn joining portion 50 is untwisted by the first untwisting portion 40A in a state where the upper yarn end YA is grasped by the first grasping portion 60A and the lower yarn end YB is grasped by the second grasping portion 60B. The upper yarn end YA thus made and the lower yarn end YB untwisted by the second untwisting portion 40B are twisted together. When the yarn end YA and the yarn end YB are twisted together at the yarn joining portion 50, the yarn end YA and the yarn end YB are pulled out from the first untwisting portion 40A and the second untwisting portion 40B by the yarn shifting lever 81, The yarn end YA and the tip end of the yarn end YB are pressed in the vicinity of the yarn joining portion 50 by the twist-preventing lever 82.

  As shown in FIG. 3, a stepping motor 23 is attached to the frame body 20 as a drive source for the pair of yarn shifting levers 81 and the pair of twisting levers 82. The base end portion of the arm 24 is fixed to the rotation shaft of the stepping motor 23. The rear end portion of the connecting member 25 is rotatably connected to the distal end portion of the arm 24. The base end portion of the yarn moving lever 81 is rotatably connected to the front end portion of the connecting member 25. The yarn gathering lever 81 is rotatably supported by a support shaft 26 fixed to the frame body 20.

  Further, the support shaft 26 is rotatably supported by a twist prevention lever 82. The anti-twist lever 82 is urged toward the yarn shifting lever 81 by a torsion coil spring (not shown) rotatably attached to the support shaft 26. Thereby, the twist prevention lever 82 is rotated together with the yarn shifting lever 81 toward the first untwisting portion 40A and the second untwisting portion 40B. However, for example, after the anti-twisting lever 82 comes into contact with a stopper or the like provided on the frame body 20, only the yarn shifting lever 81 is rotated toward the first untwisting portion 40A and the second untwisting portion 40B.

  Further, a stepping motor (first drive source) 27 is attached to the frame body 20 as a drive source for the first gripping portion 60A, the first moving portion 30A, the second gripping portion 60B, and the second moving portion 30B. The first moving unit 30A moves the first holding position 69A of the upper yarn end YA in the first holding unit 60A in order to adjust the length of the upper yarn end YA taken into the first untwisting unit 40A. . In order to adjust the length of the lower yarn end YB taken into the second untwisting portion 40B, the second moving portion 30B sets the second holding position 69B of the lower yarn end YB in the second holding portion 60B. Move. Details of these will be described later.

  The base end portion of the arm 28 is fixed to the rotation shaft of the stepping motor 27. The rear end portions of the pair of connecting members 31 are rotatably connected to the distal end portion of the arm 28. The upper connecting member 31 is bent in a crank shape toward the first gripping portion 60A and functions as the first moving portion 30A. A front end portion of the upper connecting member 31 is rotatably connected to a distal end portion of an upper arm 32 disposed on the lower side of the first guide plate 21. A base end portion of the upper arm 32 is rotatably supported by an upper support shaft 33 fixed to the first guide plate 21.

  On the other hand, the lower connecting member 31 is bent in a crank shape toward the second gripping portion 60B, and functions as the second moving portion 30B. Although not shown, the front end portion of the lower connecting member 31 is rotatably connected to the distal end portion of the lower arm 32 disposed on the upper side of the second guide plate 22. A base end portion of the lower arm 32 is rotatably supported by a lower support shaft 33 fixed to the second guide plate 22.

  60 A of 1st holding parts have the base member 61 provided rotatably with respect to 40 A of 1st untwisting parts, and the sub member 62 attached to the base member 61 so that rotation was possible. The base end portion of the base member 61 is rotatably supported by a support shaft 63 fixed to the first guide plate 21, and the base end portion of the sub member 62 is supported by a support shaft 64 fixed to the base member 61. It is rotatably supported. Therefore, the rotation surface of the base member 61 and the rotation surface of the sub member 62 are parallel to each other. The tip of the sub member 62 is biased toward the tip of the base member 61 by a torsion coil spring 65 that is rotatably attached to the support shaft 64. In the first gripping portion 60A, the upper yarn end YA is gripped by the tip portion of the base member 61 and the tip portion of the sub member 62.

  An arm 66 extends from the base end portion of the base member 61. A cam follower 66a is attached to the tip of the arm 66 so that the rear side surface 31a of the bent portion of the upper connecting member 31 can come into contact. An arm 68 extends from the base end portion of the sub member 62. A cam follower 68a is attached to the tip of the arm 68 so that the front side surface 31b of the bent portion of the upper connecting member 31 can come into contact.

  The upper connecting member 31 moves the first holding position 69A of the upper yarn end YA in the first holding portion 60A in order to adjust the length of the upper yarn end YA taken into the first untwisting portion 40A. It functions as the first moving unit 30A. Here, operations of the first gripper 60A and the first moving unit 30A will be described. In addition, since the structure of the 2nd holding part 60B and the 2nd moving part 30B is the same as that of the structure of the 1st holding part 60A and the 1st moving part 30A, description about the 2nd holding part 60B and the 2nd moving part 30B. Is omitted.

  First, in the state shown in FIG. 3, the front side surface 31b of the bent portion of the upper connecting member 31 is in contact with the cam follower 68a, and the distal end portion of the sub member 62 and the distal end portion of the base member 61 are opened. Yes. Subsequently, when the stepping motor 27 rotates the tip of the arm 28 to the rear side, as shown in FIG. 4, the front side surface 31b of the bent portion of the upper connecting member 31 is separated from the cam follower 68a. Due to the biasing force of the torsion coil spring 65, the distal end portion of the sub member 62 and the distal end portion of the base member 61 are closed. In this way, the first gripping portion 60A grips the upper yarn end YA that is attracted by the yarn shifting lever 81 and introduced into the guide groove 21a and the guide groove 22a at the first gripping position 69A.

  Further, when the stepping motor 27 rotates the tip of the arm 28 to the rear side, as shown in FIG. 5, the rear side surface 31a of the bent portion of the upper connecting member 31 contacts the cam follower 66a. The base member 61 is rotated in a state where the distal end portion of the sub member 62 and the distal end portion of the base member 61 are closed. Thus, the first moving part 30A moves the first gripping position 69A of the upper yarn end YA in the first gripping part 60A by rotating the base member 61 with respect to the first untwisting part 40A. Let More specifically, the first moving unit 30A has a first direction (here, left and right) perpendicular to the direction in which the first gripping unit 60A and the first cutting unit 70A face each other (that is, the direction along the yarn path). Direction), the first gripping position 69A of the upper yarn end YA in the first gripping portion 60A is moved.

Returning to FIG. 3, an actuator (second drive source) 29 such as an air cylinder or a solenoid is attached to the frame body 20 as a drive source for the first cutting unit 70 </ b> A and the second cutting unit 70 </ b> B. The second cutting part 70 </ b> B has a fixed piece 71 fixed to the first guide plate 21 and a movable piece 72 rotatably supported on the support shaft 33. An arm 73 extends from the base end of the movable piece 72, and the actuator 29 is connected to the tip of the arm 73. Thereby, the movable piece 72 is opened and closed with respect to the fixed piece 71 by the actuator 29 at a predetermined timing. In this way, the first cutting part 70A cuts the lower yarn end YB that is drawn by the yarn moving lever 81 and introduced into the guide groove 21b and the guide groove 22b. In addition, since the structure of 70 A of 1st cutting parts is the same as that of the 2nd cutting part 70B, description about 70 A of 1st cutting parts is abbreviate | omitted.
[Operation of yarn joining device]

  Next, the operation of the yarn joining device 10 described above (that is, the yarn joining method performed in the yarn joining device 10) will be described.

  When the yarn gathering lever 81 pivots toward the first untwisting portion 40A and the second untwisting portion 40B, it is guided by the upper yarn end YA guided by the upper yarn catching device 12 and the lower yarn catching device 7. The lower yarn end YB is drawn toward the first untwisting portion 40A and the second untwisting portion 40B. Thereby, the upper yarn end YA is introduced into the guide groove 21a of the first guide plate 21, the guide groove 22a of the second guide plate 22, and the yarn joining nozzle 51 of the yarn joining portion 50. Similarly, the lower yarn end YB is introduced into the guide groove 21b of the first guide plate 21, the guide groove 22b of the second guide plate 22, and the yarn joining nozzle 51 of the yarn joining portion 50. The upper yarn end YA and the lower yarn end YB are arranged in the accommodating portion 52 via the guide inclined portion 53 when introduced into the yarn joining nozzle 51.

  Subsequently, the upper yarn end YA introduced into the guide groove 21a of the first guide plate 21 is gripped by the first gripping portion 60A in the vicinity of the guide groove 21a (first gripping step). Similarly, the lower yarn end YB introduced into the guide groove 22b of the second guide plate 22 is gripped by the second gripping portion 60B in the vicinity of the guide groove 22b (second gripping step). Subsequently, the upper yarn end YA introduced into the guide groove 22a of the second guide plate 22 is cut by the first cutting portion 70A in the vicinity of the guide groove 22a while being held by the first holding portion 60A ( First cutting step). Similarly, the lower yarn end YB introduced into the guide groove 21b of the first guide plate 21 is cut by the second cutting portion 70B in the vicinity of the guide groove 21b while being held by the second holding portion 60B. (Second cutting step).

  Subsequently, when the first untwisting portion 40A injects the air for untwisting into the untwisting nozzle 43 from the injection hole, the upper yarn end YA cut by the first cutting portion 70A becomes the first gripping portion 60A. In the state of being gripped by the first untwisting portion 40A and being untwisted (first untwisting step). Similarly, when the second untwisting portion 40B injects the air for untwisting from the injection hole into the untwisting nozzle 43, the lower yarn end YB cut by the second cutting portion 70B becomes the second gripping portion. In the state gripped by 60B, it is taken in and untwisted by the second untwisting section 40B (second untwisting step).

  Subsequently, when the yarn moving lever 81 further pivots toward the first untwisting portion 40A and the second untwisting portion 40B, the upper yarn end YA is pulled out from the first untwisting portion 40A and the lower yarn The end YB is pulled out from the second untwisting portion 40B. Then, the leading end portion of the upper yarn end YA and the leading end portion of the lower yarn end YB are pressed in the vicinity of the yarn joining portion 50 by the anti-twist lever 82 pivoted together with the yarn shifting lever 81. Subsequently, when the yarn joining section 50 injects the yarn joining air into the accommodation portion 52 from the injection hole, the upper yarn end YA untwisted by the first untwisting portion 40A and the second untwisting portion 40B. Are twisted together with the lower yarn end YB untwisted by (yarn joining step). At this time, the upper yarn end YA is held by the first holding portion 60A, and the lower yarn end YB is held by the second holding portion 60B.

  Subsequently, the yarn holding lever 81 and the twist-preventing lever 82 pivot in the opposite directions, and the first gripping portion 60A and the second gripping portion 60B release the gripping. Accordingly, the yarn Y joined by joining the upper yarn end YA and the lower yarn end YB returns to the front yarn path of the yarn joining device 10.

  Finally, the untwisting length adjustment performed during the operation of the above-described yarn joining device 10 will be described. In the yarn splicing device 10, in order to adjust the length of the upper yarn end YA taken into the first untwisting portion 40A, the first moving unit 30A has the first yarn end YA in the first gripping portion 60A. The holding position 69A is moved (adjustment process). Similarly, in order to adjust the length of the lower yarn end YB taken into the second untwisting portion 40B, the second moving unit 30B performs the second grasping of the lower yarn end YB in the second grasping portion 60B. The position 69B is moved (adjustment process). Thus, in the yarn joining device 10, the first gripping portion 60A and the first moving portion 30A function as an adjusting portion that adjusts the length of the upper yarn end YA taken into the first untwisting portion 40A. The two gripping portions 60B and the second moving portion 30B function as an adjusting portion that adjusts the length of the lower yarn end YB taken into the second untwisting portion 40B.

  When shortening the length of the upper yarn end YA taken into the first untwisting portion 40A, the yarn joining device 10 operates as follows. First, as shown in FIGS. 6A and 6B, the first gripping portion 60A grips the upper yarn end YA introduced into the guide groove 21a of the first guide plate 21 (first gripping). Process). Subsequently, as shown in FIG. 6B, the first cutting unit 70A cuts the upper yarn end YA at the first cutting position 79A (first cutting step). Subsequently, as shown in FIG. 6C, the first moving unit 30A moves the first holding position 69A of the upper yarn end YA in the first holding unit 60A (first moving step). As described above, the length of the upper yarn end YA taken into the first untwisting portion 40A is reliably shortened by the length L by performing the first moving step after the first cutting step. In this case, if the movement amount of the first gripping position 69A is increased, the length L to be shortened can be increased, and if the movement amount of the first gripping position 69A is decreased, the length L to be shortened is decreased. Can do. The adjustment of the untwisting length of the lower yarn end YB is performed in the same manner as the adjustment of the untwisting length of the upper yarn end YA.

  On the other hand, when increasing the length of the upper yarn end YA taken into the first untwisting portion 40A, the yarn joining device 10 operates as follows. First, as shown in FIGS. 7A and 7B, the first gripping portion 60A grips the upper yarn end YA introduced into the guide groove 21a of the first guide plate 21 (first gripping). Process). Subsequently, as shown in FIG. 7C, the first moving unit 30A moves the first gripping position 69A of the upper yarn end YA in the first gripping unit 60A (first moving step). Subsequently, as shown in FIG. 7C, the first cutting unit 70A cuts the upper yarn end YA at the first cutting position 79A (first cutting step). Subsequently, as illustrated in FIG. 7D, the first moving unit 30A returns the first gripping position 69A of the upper yarn end YA in the first gripping unit 60A to the original position. As described above, the length of the upper yarn end YA taken into the first untwisting portion 40A is reliably increased by the length L by performing the first moving step before the first cutting step. . In this case, if the movement amount of the first gripping position 69A is increased, the length L to be lengthened can be increased, and if the movement amount of the first gripping position 69A is decreased, the length L to be lengthened is decreased. Can do. The adjustment of the untwisting length of the lower yarn end YB is performed in the same manner as the adjustment of the untwisting length of the upper yarn end YA.

The above-described untwisting length adjustment is performed by setting a desired untwisting length in the control unit 16 of each winding unit 1. The setting of the untwisting length for the control unit 16 can be performed directly via the input unit 17 of each winding unit 1 or indirectly via the upper input unit of the automatic winder (that is, via the upper control unit). ), Performed by the operator. The control unit 16 controls the operations of the first moving unit 30A and the second moving unit 30B, and the first cutting unit 70A and the second cutting unit 70B of the yarn joining device 10 according to the set untwisting length. The untwisting length of the upper yarn end YA adjusted by the operation of the first moving unit 30A and the untwisting length of the lower yarn end YB adjusted by the operation of the second moving unit 30B are the yarns to be wound. Depending on the Y yarn type and the like, the controller 16 can appropriately set (the upper yarn end YA and the lower yarn end YB may have the same value or different values). Moreover, if the setting of the untwisting length for the control unit 16 is performed via the higher-order control unit of the automatic winder, the untwisting lengths for the plurality of winding units 1 can be set all at once.
[Action and effect]

  As described above, in the yarn joining device 10, the actuator 29 that opens and closes the first cutting unit 70A and the second cutting unit 70B (that is, the actuator 29 dedicated to the first cutting unit 70A and the second cutting unit 70B) is independent. Is provided. Therefore, an adjustment unit that adjusts the length of the upper yarn end YA taken into the first untwisting portion 40A and the length of the lower yarn end YB taken into the second untwisting portion 40B (that is, the first gripping) For the operations of the unit 60A and the first moving unit 30A, and the second gripping unit 60B and the second moving unit 30B (hereinafter the same), at an appropriate timing without being affected by the operation of other configurations, The upper yarn end YA and the lower yarn end YB can be cut. Therefore, according to the yarn joining device 10, for example, depending on the yarn type, the length of the upper yarn end YA taken into the first untwisting portion 40A and the lower yarn end taken into the second untwisting portion 40B The length of YB can be adjusted flexibly, and appropriate yarn splicing can be realized while suppressing an increase in the knotting cycle (time required for one yarn splicing).

  Further, since the first cutting unit 70A and the second cutting unit 70B are opened and closed by the independent actuator 29, useless opening and closing operations due to interlocking with other configurations are eliminated (that is, the number of opening and closing operations is minimized). The lifetime of the first cutting part 70A and the second cutting part 70B can be extended.

  Further, the first gripper 60A functions as a part of the adjustment unit by moving the first gripping position 69A of the upper yarn end YA in the first gripper 60A, and the second gripper 60B By moving the second gripping position 69B of the lower yarn end YB in the gripping part 60B, it functions as a part of the adjusting part. Thus, the structure of the yarn joining device 10 can be simplified by using the first gripping portion 60A and the second gripping portion 60B as a part of the adjusting portion.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, in the above embodiment, the yarn joining device 10 is applied to the winding unit 1 of the automatic winder. However, the yarn joining device of the present invention moves between the winding unit of the spinning machine or a plurality of winding units. It may be applied to a working cart or the like. When the yarn splicing device of the present invention is applied to a winding unit of a spinning machine, the yarn feeding unit of the present invention includes a draft device that supplies spun yarn, a spinning device, and the like.

  Further, a first guide portion (one yarn shifting lever 81 or other member corresponding thereto) for guiding the upper yarn end YA from the first untwisting portion 40A to the yarn joining portion 50 is provided in the first guide portion. By moving the first guide position of the upper yarn end YA, it may function as at least a part of the adjustment unit. Similarly, a second guide portion (the other yarn shifting lever 81 or other member corresponding thereto) that guides the lower yarn end YB from the second untwisting portion 40B to the yarn joining portion 50 is provided in the second guide. By moving the second guide position of the lower yarn end YB in the part, it may function as at least a part of the adjustment part. Thus, the structure of the yarn joining device 10 can be simplified by using the first guide portion and the second guide portion as at least a part of the adjustment portion.

  DESCRIPTION OF SYMBOLS 1 ... Winding unit, 2 ... Bobbin support part (yarn feeding part), 10 ... Yarn splicing device, 13 ... Winding part, 16 ... Control part, 17 ... Input part, 27 ... Stepping motor (1st drive source), DESCRIPTION OF SYMBOLS 29 ... Actuator (2nd drive source), 30A ... 1st moving part (adjustment part), 30B ... 2nd moving part (adjustment part), 40A ... 1st untwisting part, 40B ... 2nd untwisting part, 50 ... Thread splicing part, 60A ... first gripping part (adjusting part), 60B ... second gripping part (adjusting part), 70A ... first cutting part, 70B ... second cutting part.

Claims (10)

A yarn joining device that joins yarn ends together,
A first gripping part for gripping one of the yarn ends;
A first cutting unit that cuts the one yarn end in a state where the one yarn end is held by the first holding unit;
A first untwisting portion for taking in and untwisting the one yarn end cut by the first cutting portion in a state where the one yarn end is grasped by the first grasping portion;
A second gripping part for gripping the other yarn end;
A second cutting portion for cutting the other yarn end in a state where the other yarn end is gripped by the second gripping portion;
A second untwisting portion for taking in and untwisting the other yarn end cut by the second cutting portion in a state where the other yarn end is grasped by the second grasping portion;
An adjustment unit for adjusting the length of the one yarn end taken into the first untwisting portion and the length of the other yarn end taken into the second untwisting portion;
The one yarn end untwisted by the first untwisting portion in a state where the one yarn end is grasped by the first grasping portion and the other yarn end is grasped by the second grasping portion. And a yarn joining portion for twisting the other yarn end untwisted by the second untwisting portion,
A first drive source for driving the first gripping part and the second gripping part;
A yarn splicing device comprising: a second drive source that opens and closes the first cutting unit and the second cutting unit. The first gripping part functions as at least a part of the adjustment part by moving a first gripping position of the one yarn end in the first gripping part,
2. The yarn splicing device according to claim 1, wherein the second gripping portion functions as at least a part of the adjustment portion by moving a second gripping position of the other yarn end in the second gripping portion. A first guide portion for guiding the one yarn end from the first untwisting portion to the yarn joining portion;
A second guide portion for guiding the other yarn end from the second untwisting portion to the yarn joining portion,
The first guide part functions as at least a part of the adjustment part by moving the first guide position of the one yarn end in the first guide part,
The yarn splicing device according to claim 1, wherein the second guide portion functions as at least a part of the adjustment portion by moving a second guide position of the other yarn end in the second guide portion. The yarn splicing device according to any one of claims 1 to 3,
A yarn supplying section for supplying yarn;
A winding unit for winding the yarn;
A winding unit comprising: at least the adjustment unit of the yarn joining device, and a control unit that controls operations of the first cutting unit and the second cutting unit.   The length of the one yarn end adjusted by the operation of the adjusting unit and taken into the first untwisting unit, and the other yarn adjusted by the operation of the adjusting unit and taken into the second untwisting unit The winding unit according to claim 4, further comprising an input unit for setting an end length with respect to the control unit. A plurality of winding units according to claim 4 or 5,
A textile machine comprising: an upper control unit that regulates each control unit of the winding unit.   In each of the yarn joining devices of the winding unit, the length of the one yarn end adjusted by the operation of the adjustment unit and taken into the first untwisting unit, and adjusted by the operation of the adjustment unit and The fiber according to claim 6, further comprising an upper input unit for setting the length of the other yarn end taken into the second untwisting unit for each of the control units via the upper control unit. machine. A yarn joining method for joining yarn ends,
A first gripping step in which the first gripping portion grips one of the yarn ends;
A first cutting step in which the first cutting section cuts the one thread end in a state where the one thread end is gripped by the first gripping section;
A first untwisting step in which the first untwisting unit takes in and untwists the one yarn end cut by the first cutting unit in a state where the one yarn end is gripped by the first gripping unit. When,
A second gripping step in which the second gripping portion grips the other yarn end;
A second cutting step in which the second cutting portion cuts the other yarn end in a state where the other yarn end is held by the second gripping portion;
A second untwisting step in which the second untwisting portion takes in the other yarn end cut by the second cutting portion and untwists the yarn while the other yarn end is gripped by the second gripping portion. When,
An adjusting step for adjusting the length of the one yarn end taken into the first untwisting portion and the length of the other yarn end taken into the second untwisting portion;
The yarn joining portion was untwisted by the first untwisting portion in a state where the one yarn end was grasped by the first grasping portion and the other yarn end was grasped by the second grasping portion. A yarn joining step of twisting the one yarn end and the other yarn end untwisted by the second untwisting portion,
In each of the first gripping step and the second gripping step, a first drive source drives the first gripping portion and the second gripping portion,
In each of the first cutting step and the second cutting step, a yarn joining method in which a second driving source opens and closes the first cutting unit and the second cutting unit. In the adjustment step,
The first gripping part functions as at least a part of the adjustment part by moving the first gripping position of the one yarn end in the first gripping part,
The yarn splicing method according to claim 8, wherein the second gripping portion functions as at least a part of the adjusting portion by moving a second gripping position of the other yarn end in the second gripping portion. In the adjustment step,
The first guide portion that guides the one yarn end from the first untwisting portion to the yarn joining portion moves the first guide position of the one yarn end in the first guide portion, thereby adjusting the adjustment. Function as at least part of the department,
The second guide portion that guides the other yarn end from the second untwisting portion to the yarn joining portion moves the second guide position of the other yarn end in the second guide portion, thereby adjusting the adjustment. The yarn splicing method according to claim 8, which functions as at least a part of the section.

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