JPS61108751A - Weft yarn treatment in shuttleless loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a weft processing method in a shuttleless loom such as a fluid jet loom, a rapier loom, or a gripper loom.

(Prior art) In general, the incidence of weft insertion errors in shuttleless looms aiming for higher speeds, especially in fluid jet looms, is higher than in frame looms. Stopping the weaving machine goes against the goal of improving productivity, which is the reason why we want high-speed looms. However, once a weft insertion error occurs, the machine must be stopped and the weft insertion error must be dealt with in order to maintain the quality of the woven fabric. The loom is stopped based on the weft insertion error detection signal from the weft detection device, but in order to prevent damage to various parts of the high-speed loom, the loom is stopped after the loom has inertia operated beyond the rotation of the loom. Mistaken weft threads (hereinafter referred to as "mistake threads") are beaten before the machine stops and are woven into the woven fabric.

Therefore, the machine must be reversed to release the warp from holding the misplaced thread and remove the misplaced thread.
Conventionally, this work of removing erroneous threads has been done manually. However, since the misplaced yarns are embedded in the woven fabric in the same way as normal weft yarns, even when the warp threads are set to the maximum open state, the state in which the misplaced threads are held by the warp threads is not sufficiently released. Therefore, removing the misplaced yarn is very complicated, and the loom is stopped for a long time, which hinders productivity improvement.

An example of a weft processing device that attempts to solve these problems is disclosed in Japanese Patent Laid-Open No. 58-220856.

This weft processing device is movably supported by a guide rail installed in the weaving width direction, and the weft separation fingers of the processing device are moved from outside the warp shedding into the warp shedding at an appropriate position within the weaving width. The receiver separates the erroneous yarn from the woven fabric and passes the erroneous yarn to a weft gripping mechanism inserted into the warp opening. The gripping mechanism is moved from inside the warp opening to outside the warp opening, and a part of the missed yarn is pulled out outside the warp opening, and the remaining missed yarn is pulled upward from inside the warp opening by a weft pulling mechanism consisting of a pair of rollers. It is meant to be removed.

(Problems to be Solved by the Invention) However, in this conventional device, since the misplaced thread is pulled upward from between the warp threads, as the misplaced thread is drawn out and passes, the warp thread near the takeout position of the misplaced thread is rubbed.
Not only will the same warp threads be damaged, but the misplaced threads will not be pulled out smoothly, and there is a risk that the misplaced threads will break during the process of being drawn out and be woven into the fabric after the machine is restarted.

Furthermore, when removing a misplaced thread from within the warp opening, the misplaced thread is pulled out upward, which requires a weft thread pull-out mechanism as described above, resulting in a problem that the mechanism is complicated.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, in a loom that is stopped based on a loom stop signal, the warp threads are formed in an open state so that the loom is stopped just before the loom stops. The woven state of the weft threads woven into the fabric is released, and the weft thread processing device, which is usually retracted to one of the edges of the canvas, is moved in the weave width direction and stopped at a predetermined position within the weave width. At the same stop position, the weft separating member of the weft processing device enters the warp opening from outside the warp opening to separate the weft from the woven fabric, and within the range between the retracted position of the weft processing device and the center of the weaving width. The weft separating member is moved from inside the warp shedding to outside the warp shedding in a state where most of the wefts are separated from the woven fabric, and the separated wefts are engaged and held on the center side of the weaving width. A part of the weft is pulled out from inside the warp opening to outside the warp opening, and a weft gripping mechanism provided in the weft processing device grips the part of the weft pulled out outside the warp opening, and the gripping position of the weft is Cutting the weft threads pulled out of the warp opening between the weft threads that have not been separated from the woven fabric, and moving the weft processing device from this state to the fabric end side opposite to the retracted position to remove the separated weft threads. The weft is pulled out from inside the warp opening to outside the warp opening and removed, and then the weft separation operation is performed at least once within the range of the cloth edge side opposite to the retracted position and the center of the weaving width, and the weft is removed within the same range. Most of the wefts are separated from the woven fabric, and the weft separation member is moved from inside the warp opening to outside the warp opening while the wefts are engaged and held at the center of the weaving width, and a part of the wefts are separated from the woven fabric. At the same time, the weft threads are pulled out of the warp shedding, and the weft threads that have been twisted out of the warp shedding are gripped by the weft gripping mechanism, and from this state, the weft processing device is moved to the retracted position to remove the weft threads from inside the warp shedding. It was removed by pulling it out of the opening.

(Function) In other words, when a weft insertion error occurs and the misplaced yarn is woven into the woven fabric, the warp threads form an open state and are woven into the woven fabric, and the weaving state of the misplaced thread is released. In this step, the weft processing device, which is in the retracted position on one of the fabric edges, is moved within the range between the retracted position and the center of the weaving width, and the weft separation member is moved from the woven fabric side toward the reed side, and the warp Enter the warp threads from outside the opening into the warp opening. At this time, the weft separation member sweeps the woven cloth, and the missed yarn is separated from the woven fabric by the separation member. This separation operation is performed at least once within the range between the retracted position and the center of the weaving width to separate most of the misplaced yarns within the same range from the woven fabric. Then, the weft separating member is moved from inside the warp shedding to outside the warp shedding while engaging and holding the separated miss yarns on the center side of the weaving width, and part of the miss yarns is moved from inside the warp shedding to outside the warp shedding. A weft gripping mechanism provided in the weft processing device grips a portion of the missed yarn pulled out of the warp opening, and a weft cutting mechanism provided in the weft processing device separates the missed yarn from the gripping position. The erroneous thread that has been pulled out of the warp opening between the erroneous thread and the erroneous thread that has not been removed is cut, and from this state, the weft processing device is moved to the cloth end side opposite to the retracted position. As a result, the misplaced yarns within the range between the retracted position and the center of the weaving width are pulled out of the warp opening and are removed by, for example, a suction device. At this time, since the drawing direction of the misplaced threads within the same range is the direction that is least likely to conflict with the warp threads within the same range, there is no risk of the warp threads being damaged or the misplaced threads being cut. The weft separation operation is performed at least once within the range of the opposite fabric edge side and the weaving width center to separate most of the remaining misplaced yarns within the same range from the woven fabric.

Then, the weft separating member is moved from inside the warp opening to outside the warp opening while engaging and holding the same missed yarn on the weaving width center side to pull out a part of the missed yarn outside the warp opening, and at the same time, the weft gripping member If the weft processing device is gripped by the member and moved from this state to the retracted position, the erroneous threads present within the warp shedding will also be pulled out to the outside of the warp shedding. In this case as well, the misplaced threads in the warp opening are pulled out in the direction where they are least likely to come into contact with the warp within the range of the cloth edge side opposite to the retracted position and the center of the weaving width. There is no risk of the threads being cut, and the misplaced threads are smoothly and reliably pulled out of the warp shedding and removed.

(Example) Hereinafter, an example in which the present invention is embodied in a fluid jet loom will be described based on the drawings.

Reference numeral 1 denotes a main nozzle attached to one end of the slay 2, and the weft Y guided to the main nozzle 1 via a length measuring mechanism and storage mechanism (not shown) is a large number of wefts arranged in parallel on the slay 2. The weft is injected from the main nozzle 1 into the weft guide path S formed by the guide member 3. The weft yarn Y inserted into the weft guide path S is passed through a plurality of auxiliary nozzles 4 arranged at predetermined intervals along a large number of weft guide members 3.
The flight is assisted by the auxiliary jet fluid from the.

A predetermined number of weft guide members 3 and auxiliary nozzles 4 are attached to a plurality of blocks 5 (six in the illustrated example), and the auxiliary nozzles 4 of each block 5 are connected to fluid passages provided inside them. It is connected to a fluid supply source (not shown) via 5a. Then, in synchronization with the flying timing of the weft yarn Y ejected from the main nozzle 1, the auxiliary nozzle 4 on the same nozzle 1 side sequentially injects it toward the opposite side of the weft insertion in units of 5 blocks, so that the tip of the weft yarn Y is It is towed sequentially from the main nozzle 1 side to the anti-main nozzle side in a relay manner.

If the weft yarn Y ejected from the main nozzle 1 is inserted normally and reaches the end of the woven fabric W on the side opposite to the main nozzle, the weft yarn The weft thread escapes from the guide hole 3a of the guide member 3 through the slit 3b, and the weft thread is transferred to the woven fabric W by the reed 6 on the slay 2.
It is driven into the woven fabric W1 and woven into the woven fabric W, and the woven fabric W
The material is cut by a cutter (not shown) provided near the end of the material on the side of the main nozzle. Then, the subsequent weaving operation is continued. If a weft insertion error occurs such as the weft yarn Y not reaching the edge of the fabric on the side opposite to the main nozzle, a weft detection device (not shown) provided on the weft guide member 3 located near the edge of the fabric A weft insertion error is detected, and the machine is stopped based on a weft insertion error detection signal from the detection device. The weft detection device is composed of light emitting/receiving elements arranged opposite to each other across the slit 3b of the weft guide member 3, and emits a weft insertion error detection signal when the weft does not pass through the slit 3b during beating. .

After the weft insertion error detection signal (also a machine stop signal) is issued, the machine rotates approximately one and a half times due to inertia and then stops. In other words, if a weft insertion error occurs, the third
The weft insertion error occurs while the reed 6 is moving forward in the direction of arrow P from the most retracted position shown by a solid line in the figure, and after the erroneous thread is beaten by the reed 6, the reed 6 temporarily returns to the most retracted position. Then, it moves forward again and stops just before the reed hit. At this time, the miss yarn Y1 is woven as shown in FIG.

During this inertial operation, weft insertion is performed following the missed yarn Y1, and the weft yarn is ejected from the main nozzle 1. However, the ejected weft yarn is stopped by a weft insertion prevention mechanism (not shown) provided near the main nozzle 1. It is now blocked from entering.

Support frames 7.8 are erected on the left and right side frames (not shown), and a guide rail 9 is installed between the frames 7.8 above the sley 2. A weft processing device 10 is suspended on the rail 9 so as to be movable along the rail 9. The processing device 10
is always in the retracted position on the side opposite to the main nozzle, indicated by A in FIG.

In this retracted position, a planar model-shaped engagement protrusion 11A is fixed to the front surface of the guide rail 9, and another engagement protrusion 11B is fixed to the front surface of the other end of the guide rail 9. Inside one of the support frames 7, there is a suction pipe 12 extending below the weft processing device 10.
A is provided, and another suction vibrator 12B is also provided inside the other support frame 8.

As shown in FIGS. 2 and 3, the weft processing device 10 is suspended and supported so that it can run on a guide rail 9 by a guide roller 14 and a drive roller 15 provided on the inside of the earthen wall of the frame 13. The position is restricted by a plurality of guide rollers 16 provided in the guide rail 9 so that it can travel only in the direction of the guide rail 9. A drive motor 17 capable of forward and reverse rotation is provided on the side wall of the frame 13 near the drive roller 15, and its drive bevel gear 17a is meshed with a bevel gear 18 fixed to one end of the shaft 15a of the drive roller 15. . Therefore, by rotating the drive motor 17 in the forward and reverse directions, the weft processing device 10 moves to the guide rail 9.
It runs left and right along the road.

A shaft 20 is rotatably supported by a support bracket 19 attached to the inside of the earthen wall of the frame 13 on the front side of the guide rail 9 (on the right side in FIG. 3), and the right end of the coaxial shaft 20 in FIG. A gear 21 is fixed to the holder, and a timing pulley 22 is fixed to the left end. A drive motor 23 capable of forward and reverse rotation is provided near the gear 21 on the inside of the side wall of the frame 13, and its drive gear 23a is meshed with the gear 21.

The shaft 20 is located between both support pieces 19a of the support bracket 19.
An arm 24 is rotatably supported by the arm 24, and a shaft 25 is rotatably supported at the lower end thereof. The rotation range of the arm 24 is restricted by a pair of restriction irons 44, 45 protruding from the right side wall of the frame 13. In FIG. 2, a timing pulley 26 is fixed to the left end of the shaft 25, and a timing belt 27 is hung between the pulley 26 and the timing pulley 22. A weft separation arm 28 is fixed to the inside of the timing pulley 26 between the timing pulley 26 and the arm 24, and a brake lining 29 is fixed to the side surface of the arm 28 on the timing pulley 26 side. , is rotatable about the shaft 25. Then, the nut 3o screwed onto the right end of the shaft 25 and the arm 24
The arm 24 and the brake lining 29 are pressed against each other by a spring 31 interposed between the arm 24 and the brake lining 29. A weft separation member 33 is connected to the tip of the weft separation arm 28 via a leaf spring 32.
is installed. A limit switch 34 for stopping the drive motor 23 is provided on the side surface of the arm 24 in the vicinity of the base end of the weft separation arm 28, and a control piece 28a protruding from the base end of the weft separation arm 28 is always set to the limit switch. The switch 34 is brought into contact with the switch 34 in the ON state. Further, a drive motor 2 is mounted on the side surface of the base end of the arm 24.
3. A limit switch 3-5 for reverse rotation is provided.

Furthermore, a pair of limit switches 46 and 47 are provided between both support pieces of the support bracket 19, and the arm 2
It is turned on and off by a control piece 24a that protrudes from the base end of 4 in the opposite direction.

A weft gripping lever 37 is rotatably supported on a support shaft 36 protruding from the left side wall of the frame 13 in the vicinity of the guide rail 9, and is supported by a tension spring 38 interposed between the upper end of the weft gripping lever 37 and the frame 13. In FIG. 3, it is always urged to rotate counterclockwise. A gripping portion 37a is formed at the lower end of the weft gripping lever 37, and can come into contact with a receiving portion 39 formed at the lower end of the left side wall of the frame 13. Note that 13a on the right side wall of the frame 13 is a hole through which the wedge-shaped engagement protrusion 11A passes when the weft processing device IO is in and out of the retracted position A, and when the weft processing device 10 is in the retracted position A, the gripping portion The weft gripping lever 37 is rotated by the engagement protrusion 11A in a direction in which the weft gripping lever 37a and the receiving portion 39 are separated from each other.

Similarly, a hole (not shown) for passing another engagement protrusion 11B is formed in the left side wall of the frame 13. That is, the weft processing device 10 moves to the main nozzle side and the engaging protrusion 11
When B passes through the hole (not shown), the weft grip lever 37 is rotated against the tension spring 38, and a limit switch 48 for reversing the drive motor 17 provided near the hoist is turned on. It has become. Further, a latch lever 41 is rotatably supported on a shaft 4o protruding from the right side wall of the frame 13, with the latch lever 41 being inserted between the arm 24 and the timing belt 27, and the latch portion 41a is rotatably supported. It can be hooked onto the upper end of the weft gripping lever 37, and the lower end of the hanging piece 41b hanging down from the center of the lever 41 can come into contact with the weft separation arm 28. Further, the upper edge of the locking lever 41 comes into contact with the limit switch 35 to obtain ONL.

A weft cutting mechanism 49 driven by an electromagnetic solenoid is provided on the lower end surface of the receiving portion 39. is provided, and is actuated by the limit switch 35, so that the upper and lower blades 49a, 49b of the cutting mechanism 49 protrude to perform opening/closing cutting operations.

A pair of proximity switches 42 and 43 are vertically arranged on the right side wall of the frame 13 close to the guide rail 9.

The upper proximity switch 42 has magnets M1, M2, . M3
．． M4. It is compatible with M5, and the proximity switch 43 is M6
．． M? , M8°M9. When the proximity switch 42, 43 is actuated, the drive motor 17
is stopped, and the drive motor 23 is driven.

In this embodiment, when the weft processing device 1o is traveling to the left along the guide rail 9, that is, when the weft processing device 1o is running to the left, the drive motor 1
Proximity switch 42 operates only when 7 is rotating in the normal direction,
The proximity switch 43 is activated only when the weft processing device 1o is traveling in the right direction, that is, when the drive motor 17 is rotating in the reverse direction.

Also, only when the proximity switch 42 is activated,
When the limit switch 35 is turned on, the weft cutting mechanism 49 is activated.

Furthermore, in this embodiment, a count circuit (not shown) is incorporated in the weft processing device 10, and the proximity switch 42.
Limit switch 4 is activated every time five signals from 3 are input.
6.47 is placed in an inoperative state, and the recontrol pieces 24a, 28
The drive motor 23 is not stopped when both switches 46 and 47 are turned on by a.

In this embodiment, when a weft insertion error occurs, the error thread processing is automatically performed based on the error thread processing program. Therefore, the operation of mis-thread processing when a weft-insertion error occurs will be explained next.

When a weft insertion error occurs, as described above, the erroneous yarn Y1 is woven as shown in FIG. Weft insertion of the ejected weft yarn is prevented.

After the loom has stopped, the loom is automatically reversed about one and a half times, and the reed 6 is stopped at the most retracted position shown by the solid line in FIG.

As the machine reverses, warp threads T1 and T2 each move in the direction of the arrow in Fig. 4, and when the machine reverses and stops, the warp
The maximum opening state shown in the figure is reached. Therefore, the warp T1. T2
The gripping state of the misplaced yarn Y1, that is, the weaving state is released.

After the machine is reversed, the drive motor 17 is driven to rotate normally, and the weft processing device 10 in the state shown in FIG. 3 travels toward the main nozzle 1 from the retracted position A shown in FIG. 10. Then, when the proximity switch 42 faces the magnet M1,
The driving of the drive motor 17 is stopped, and the weft processing device 10 stops running at the position shown by the chain line in FIG. At the same time as the weft processing device 10 stops, the drive motor 23 is rotated forward. Accordingly, the shaft 20 is rotated in the direction of the arrow Q in FIG. 3, this rotation is transmitted to the shaft 25 via the timing belt 27, and the shaft 25 is rotated in the same direction as the shaft 20. In this case, since the weft separation arm 28 fixed to the timing boot IJ 26 is pressed against the arm 24 via the brake lining 29, frictional torque exists between the arm 24 and the weft separation arm 28, and both There is no relative rotation between them. Therefore, the arm 24 and the weft separation arm 28 are integrally rotated clockwise about the shaft 20 from the state shown in FIG. 3. As the arm 24 and the weft separation arm 28 rotate, the tip of the weft separation member 33 slides on the woven fabric W and moves toward the woven fabric W and 1 side. Then, as shown in FIG. 6, when the tip of the weft separation member 33 reaches the woven fabric W1, the tip of the weft separation member 33 engages with the missed yarn Y1, and the missed yarn near the stopped weft yarn processing device 10. is separated from the woven fabric W by a weft separating member 33 that enters into the warp opening from outside the warp opening. In this case, since the temple device (path shown in the figure) is present just above the fabric edge near the woven fabric, the separation operation of the weft separation member 33 is performed somewhat inside the fabric edge, and a small portion of the tip of the missed yarn Y1 is removed. In some cases, it is not separated from the fabric. When the arm 24 further rotates, the miss yarn Y1 is engaged and held by the weft separation member 33 and is spaced apart from the fabric as shown in FIG. 45, the limit switch 46 is turned on by the control piece 24a, the drive motor 23 is reversed, the arm 24 returns to the state shown in FIG.
Rotation is restricted by.

At the same time, the limit switch 4 is controlled by the control piece 24a.
7 is turned on, the drive motor 23 is stopped, the drive motor 17 is rotated forward, the weft processing device IO runs on the guide rail 19 toward the main nozzle, and the magnet M2
The weft separation operation is performed again at positions M4 to M4.

When the weft processing device 10 travels toward the main nozzle 1 and the magnet M5 and the proximity switch 42 face each other, the drive motor 17 is stopped and the drive motor 23 is rotated in the forward direction, and the position shown in FIG. 12 is moved to the position shown in FIG. The weft separation operation from to that shown in FIG. 7 is performed. At this time, since the limit switch 46 is in an inactive state, the drive motor 23 is not stopped by the limit switch 46. Therefore, as shown in FIG.
5 overcomes the frictional torque between the arm 24 and the weft separation arm 28, and the shaft 25 rotates relative to the arm 24. As a result, the weft separation member 33 is rotated from the position shown by the solid line in FIG. Separation arm 28
contacts the hanging piece 41b, the latch lever 41 is pushed upward, the latch state between the lever 41 and the weft gripping lever 37 is released, and the limit switch 35 is turned to O.
N is given. As shown in FIG. 9, the weft separating member 33 is disposed on the side of the grasping part 37a and the receiving part 39 which are in a separated state, and a part of the miss yarn Y1 pulled out outside the warp opening is disposed between them. Then, by releasing the latch between the latch lever 41 and the weft gripping lever 37, the miss yarn Y1 is gripped by the gripping portion 37a and the receiving portion 39. Then, the weft cutting mechanism 49 is activated, and the side of the misplaced yarn Yl that has not been separated from the woven fabric W is cut in the vicinity of the side of the gripping position of the misplaced yarn Yl, as shown in FIG.

That is, most of the misplaced yarn Y1 on the side of the retracted position A from the center of the weaving width is separated from the woven fabric W, and at the same time, it is separated from the remaining misplaced yarn Y1 that is not separated from the fabric W on the side of the main nozzle from the center of the weaving width. It is cut and held between the grip part 37a and the receiving part 39. Further, when the limit switch 35 is turned on, the drive motor 23 is reversed, and the arm 24
is regulated by the regulating rod 44 and rotated to the position shown by the solid line in FIG. 7, and the weft separation member 33 is arranged to the position shown by the chain line. When the weft separation member 33 is rotated to the position shown by the solid line, the limit switch 34
is turned on by the control piece 28a, the drive motor 23 is stopped, the drive motor 17 is driven to rotate normally, and the weft processing device IO is moved to the main nozzle 1 side with the missed yarn yt being gripped by the weft processing device 10. Run. Therefore,
Mistake yarn Y1 within the range between the retreat position A and the center of the weaving width
The warp threads are drawn out smoothly in the direction where they are least likely to come into contact with the warp threads within the same range without damaging the warp threads. .

Mistake yarn Y1 within the range between the retreat position A and the center of the weaving width
As shown in FIG. 14, the weft processing device 33
By moving to the 1B side, the warp threads are pulled out and placed outside the warp opening between the center of the weaving width and the fabric end on the main nozzle side. When the weft processing device 10 reaches the position of the engaging protrusion 11B, the weft gripping lever 37 is rotated clockwise around the support shaft 36 in FIG. At the same time, the connection with the part 39 is released, and the latch part 41a of the latch lever 41 is latched to the upper end of the weft gripping lever 37, and the gripping part 37a and the receiving part 3 are latched.
9 are maintained in a separated state.

Then, the suction pipe 12B is operated, and the erroneous yarn Y1 that has been pulled out of the warp opening is suctioned and removed.

Also, the limit switch 48 is turned on by the engaging protrusion 11B.
Then, the drive motor 17 is reversely rotated, and the weft processing device 10 travels toward the retracted position A.

As the weft processing device 10 travels, the proximity switch 43 faces the magnet M6, and the drive motor 17 is stopped.

As a result, the weft processing device 10 performs the weft separation operation at the position shown in FIG.

In this case, since there is a temple device right above the fabric edge near the woven fabric on the main nozzle side, the end of the miss yarn Y1 is
In some cases, it remains unseparated from l. Following this weft separation operation, magnets M7, M8. A weft separation operation is performed at position M9.

When the weft processing device IO reaches the position of the magnet) MIO,
The weft separation operation of the arm 24 and the weft separation member 33 is performed, and following this weft separation operation, the weft separation member 33
The weft yarn is rotated from the position shown by the solid line to the position shown by the chain line, and the weft thread is pulled out as shown in FIG. 16.

As shown in FIG. 9, the weft separation member 33 is rotatably arranged between the gripping part 37a and the receiving part 39, which are in a separated state, so that a part of the missed yarn Y1 outside the warp opening is caught in the gripping part 37a. Part 3
9. At the same time, the weft separation arm 28 comes into contact with the hanging piece 41b of the latch lever 41, the latch lever 41 is pushed upward, and the latch part 41a is removed from the upper end of the weft gripping lever 37. Therefore, the weft gripping lever 37 is rotated counterclockwise about the support shaft 36 by the tension spring 38, and the gripping part 37a and the receiving part 39 are joined, and a part of the miss yarn Y1 is gripped between them. be done. Further, when the latch lever 41 is pushed up, the limit switch 35 is turned on, the drive motor 23 is reversed, and the arm 24 and the weft separation member 33 are rotated back to the position shown by the solid line in FIG. Cutting mechanism 49 is not activated. As the weft separation member 33 returns to rotation, the limit switch 34 is turned on by the control piece 28a, and the drive motor 23 is stopped, and the drive motor 17 is turned on.
is driven in the reverse direction, and the weft processing device 1o travels in the direction of the retracted position A. In this case, since one end of the misplaced yarn Y1 is held by the processing device 10, as the weft processing device 10 moves toward the retracted position A, the end of the fabric on the main nozzle side and the center of the weaving width are Mistake yarn Y in the warp opening within the range
1 is pulled out of the warp shedding, and when the weft processing device 10 reaches the retracted position A as shown in FIG. 17, almost all of the miss yarn Y1 is pulled out of the warp shedding. The erroneous yarn Yl is pulled out from within the warp opening in a direction where it is least likely to come into contact with the warp, and there is no risk that the warp will be damaged or the erroneous yarn Y1 will be cut while the erroneous yarn Y1 is being pulled out. When the weft processing device 10 reaches the retracted position A, the gripping portion 37a of the weft gripping lever 37 and the receiving portion 39 are disengaged from each other due to the action of the engaging protrusion 11A, and the erroneous yarn Y1 is released, and the suction pipe 12A is activated, and the released mis-thread Y1 is suctioned and removed by the same pipe 12A. Then, the latch lever 41 is connected to the weft gripping lever 3.
7, and the grip portion 37a and the receiving portion are held apart from each other.

When the weft processing device 10 returns to the retracted position A and the erroneous yarn Y1 is suctioned and removed, the loom is automatically reversed by a predetermined amount and stopped at the rotation position most suitable for restarting, and the loom operation is resumed. It will be restarted.

As described above, in this embodiment, the weft processing device 10, which is at the retracted position A during normal operation of the loom, is moved back and forth on the guide rail 9 when a weft insertion error occurs, and during the forward movement, the weft processing device 10 is moved back and forth between the retracted position A and the center of the weave width. Most of the misplaced yarns Y1 within the area are separated from the woven fabric W, and are cut and separated from the remaining misplaced yarns that have not been separated from the woven fabric. is pulled out from inside the warp shedding to outside the warp shedding, and then, during the return movement of the weft yarn processing device 10, most of the misplaced yarns Y1 within the range between the cloth end on the main nozzle side and the center of the weaving width are removed from the woven fabric W. Since the weft thread processing device IO moves back and forth to pull and remove the misplaced yarn Y1 from inside the warp shedding to outside the warp shedding, the miss yarn Y1 is pulled out smoothly without strongly rubbing against the warp threads, and the same There is no risk of damage to the warp threads, and there is no risk that the misplaced thread Y1 will be cut during undrawing, and there is no risk that the misplaced thread Y1 will be left in the warp opening and woven into the woven fabric W after the loom is restarted. .

Furthermore, in the present invention, the length of the misplaced thread that is pulled out from the inside of the warp thread shed to the outside of the warp thread shed is shortened by cutting the misfired thread at one time, so there is an advantage that the drawing resistance is further reduced.

In addition, in the present invention, in order to pull out the mis-sewn yarns separated from the woven fabric W from inside the warp shedding to outside the warp shedding, the weft processing device IO is run while holding the mis-yarn Y1 that has been partially pulled out outside the warp shedding. Since the weft thread processing device 10 does not need to be equipped with a weft pulling mechanism for pulling out all the misplaced threads in the warp shedding out of the warp shedding, the mechanism of the weft processing device 10 can be simplified.

By employing such a weft yarn processing method, the trouble associated with the conventional work of manually separating erroneous yarns from a woven fabric can be eliminated, and the erroneous yarn processing can be automatically performed. Therefore, the present invention can cope with the automation of modern weaving machines.

Further, it is possible to shorten the stop time of a high-speed loom for the purpose of improving productivity, and it is possible to cope with the trend toward higher speeds of looms.

The present invention is not limited to the above-mentioned embodiments. For example, the amount of pulled-out of the miss yarn Y1 during the forward movement of the weft-treating device 10 is
is smaller than the forward running distance of
It is also possible to shift the weft withdrawal position by the rotational operation of the weft separation member 33 in the left-right direction from the withdrawal position in the embodiment described above within a range that is less than the return traveling distance of the weft processing device 10 after the start of withdrawal.

In addition, the arm 24 is fixed to the shaft 20 and rotated directly, and the weft separation arm 28 is rotated relative to the arm 24 by a rotary solenoid or the like instead of the timing pulley 22, 26 and timing belt 27. or by moving the weft separation member 33 up and down using a linear actuator to remove the weft separation member 33 from within the warp opening.
A weft processing device that moves the weft yarn can be adopted in the present invention. Alternatively, the same missed yarn may be cut by striking the blade against the receiving portion 39 together with the gripping operation of the weft gripping lever 37. Of course, it is necessary to prevent this cutting operation from being performed when the weft processing device 10 travels backward.

Further, it is also possible to adopt a weft processing device according to the present invention, which is constructed by removing the weft drawing mechanism consisting of a pair of drawing rollers from the conventional weft processing device and providing a weft cutting mechanism instead.

In addition, although the present invention was embodied in the process of mis-thread processing in the above embodiments, it is not limited to mis-thread processing, but also applies to weaving during inertial operation when the machine is stopped due to warp thread cutting during weaving, or when the machine is artificially stopped. This method can also be applied to the case where entangled weft yarns are removed to prevent weaving steps, etc.

Effects of the Invention As detailed above, the weft processing method of the present invention separates misplaced threads from the woven fabric and removes them from within the warp opening without performing complicated manual work and without damaging the warp threads. It has an excellent effect of being able to reliably remove the warp threads from outside the shedding.

[Brief explanation of the drawing]

The drawings show an embodiment embodying the present invention; FIG. 1 is a front view of essential parts showing the entire sleigh and guide rail, FIG. 2 is a front sectional view of the weft processing device, and FIG. 3 is a front view of the weft processing device and the guide rail. A side sectional view of the slay, Figure 4 is a longitudinal sectional view showing the state in which the mis-woven threads are woven into the fabric, Fig. 5 is a longitudinal sectional view showing the state in which the woven state of the mis-threads is released, and Fig. 6 is A vertical cross-sectional view of the main part showing the vicinity of the fabric, Figure 7 is a side cross-sectional view showing changes from Figure 3, Figures 8 and 8 are longitudinal cross-sectional views showing changes from Figure 6, and Figure 9 is a weft treatment. FIG. 1 is a vertical cross-sectional view of a main part showing a state in which the erroneous yarn is pulled out due to the rotation of the weft separation member during warp and backward running of the device, 1st
Figures 0 to 17 are all plan views showing the separation and pulling-out action of the misplaced yarn. Guide rail 9, weft processing device 10, weft separation member 33
, weft cutting mechanism 49, woven fabric W, warp Tl. Na T2, mistake thread Yl.

Claims (1)

[Claims] 1. In a loom that is stopped based on a loom stop signal,
The machine creates an open state for the warp threads, releases the weft threads that were woven into the fabric just before the machine stops, and moves the weft processing device, which is normally retracted to one of the fabric edges, in the weaving width direction. and stopping at a predetermined position within the weaving width, and at the same stopping position, a weft separation member of the weft processing device enters the warp opening from outside the warp opening to separate the weft from the woven fabric, and the weft processing device is retracted. The weft separation operation is performed at least once within the range between the position and the center of the weaving width to separate most of the wefts within the same range from the woven fabric, and the separated weft threads are separated at the center of the weave width. The weft separating member is moved from inside the warp opening to outside the warp opening in a state where the weft is engaged and held, and a part of the weft is pulled out from inside the warp opening to outside the warp opening, and a weft gripper provided in the weft processing device is moved. A mechanism grips a part of the weft that has been pulled out of the warp opening, and a weft cutting mechanism provided in the weft processing device cuts the weft between the gripping position of the weft and the weft that has not been separated from the woven fabric. The pulled out weft is cut, and from this state, the weft processing device is moved to the fabric end side opposite to the retracted position to pull out and remove the separated and cut weft from inside the warp opening to outside the warp opening, and then, The weft separation operation is performed at least once within the range of the fabric end side opposite to the retracted position and the center of the woven width to separate most of the wefts within the same range from the woven fabric, and A weft processing method in a shuttleless loom, in which the weft is gripped at a central portion side, the weft processing device is moved from this state to the retracted position, and the weft is pulled out from inside the warp opening to outside the warp opening and removed.