JPH0551693B2 - - Google Patents

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 technology) In general, the incidence of weft insertion errors in shuttleless looms aiming for higher speeds, especially fluid jet looms, is higher than in shuttled looms, but the loom is stopped to handle the weft insertion errors. This goes against the goal of increasing productivity, which is the reason for the high-speed design of 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 for one rotation or more. The weft yarns that have been inserted incorrectly (hereinafter referred to as erroneous yarns) are beaten before the machine stops and are woven into the woven fabric. Therefore, it is necessary to reverse the machine to release the warp from holding the misplaced thread and remove the misplaced thread, but conventionally, this misplaced thread removal work 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 misplaced threads 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. Mistaken yarns are separated from the woven fabric and delivered 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 about 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 pulled out, 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 yarns woven into the woven fabric is released, and the weft yarn processing device, which is usually retracted to one of both fabric edges, is moved in the weaving width direction and stopped at a predetermined position within the weaving width. , at the same stop position, the 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 area between the retracted position of the weft processing device and the center of the weave width is The weft separating member is moved from inside the warp opening to outside the warp opening while engaging and holding the separated weft yarn in the center of the weaving width. From this state, the weft processing device is moved to the fabric end side opposite to the retracted position to pull out the separated weft from inside the warp opening to outside the warp opening, and then moved to the fabric end side opposite to the retracted position and the weaving width. The weft separation operation is performed at least once within the range of the center of the weft to separate most of the weft within the same range from the woven fabric, and the warp is separated by the weft gripping mechanism of the weft processing device at the center of the weft width. The weft yarn being pulled out outside the shedding is grasped, and from this state, the weft yarn processing device is moved to the retracted position, and the entire weft yarn is pulled out from inside the warp shedding to outside the warp shedding and removed.

(Function) In other words, when a weft insertion error occurs and the erroneous thread is woven into the woven fabric, an open state is created for the warp threads and the woven state of the erroneous thread woven into the woven fabric 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 mis-yarns in the center of the weaving width, and from this state, the weft processing device is moved to the position opposite to the retracted position. Move it to the edge of the fabric. 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 placed between the fabric end side opposite to the retracted position and the center of the weave width. At this time, since the pulling direction of the misplaced yarn 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 being damaged or the misplaced yarn being cut. Thereafter, a 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 weaving width to separate most of the remaining misplaced yarns within the same range from the woven fabric. Then, at the center of the weaving width, the weft gripping mechanism of the weft processing device grasps the misplaced yarns that have been pulled out outside the warp shedding, and from this state, when the weft processing device is moved to the retracted position, the misplaced yarns that are inside the warp shedding are grasped. The warp threads are also pulled out of the warp opening. 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 yarns Y guided to the main nozzle 1 via a length measuring mechanism and storage mechanism (not shown) are weft yarns 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 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 connect fluid passages 5a provided inside them. It is connected to a fluid supply source (not shown) through the fluid supply source. Then, in synchronization with the flight timing of the weft yarn Y ejected from the main nozzle 1, the auxiliary nozzle 4 on the side of the nozzle 1 sequentially injects it toward the anti-weft insertion side in units of 5 blocks, and the tip of the weft yarn Y is It is designed to be pulled sequentially from the main nozzle 1 side to the anti-main nozzle side in a relay manner.

When 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 2 moves along the arrow P in FIG.
While moving forward in the direction, the guide hole 3 of the weft guide member 3
The weft yarn escapes from a through the slit 3b, and the same weft yarn is driven into the front W1 of the woven fabric W by the reed 6 on the slay 2 and woven into the woven fabric W, and the fabric end of the woven fabric W on the main nozzle side It is cut by a cutter (not shown) provided nearby. Then, the subsequent weaving operation is continued. If a weft insertion error occurs in which the weft yarn Y does not reach the fabric edge on the side opposite to the main nozzle, a weft detection device (not shown) provided on the weft guide member 3 located near the fabric edge will be detected. )
detects a weft insertion error, 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 and 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. That is, when a weft insertion error occurs, the weft insertion error detection signal is issued while the reed 6 moves forward in the direction of arrow P from the most retracted position shown by the solid line in FIG. After the reed is struck, the reed 6 once returns to the most retracted position, moves forward again, and stops just before the reed is struck. At this time, the miss yarn Y1 is woven as shown in FIG. During this inertia operation, the error thread Y1
Subsequent weft insertion is performed and the weft is ejected from the main nozzle 1, but the ejected weft is prevented from being inserted by a weft insertion prevention mechanism (not shown) provided near the main nozzle 1. ing.

Support frames 7 and 8 are erected on the left and right side frames (not shown), respectively, and a guide rail 9 is installed between the frames 7 and 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 the first
It is in the retracted position on the side opposite to the main nozzle, indicated by A in the figure. In this retracted position, a planar wedge-shaped engagement projection 11A is fixed to the front surface of the guide rail 9, and another engagement projection 11B is fixed to the front surface of the other end of the guide rail 9. A suction pipe 12 extending to the lower side of the weft processing device 10 is provided inside one of the support frames 7 .

As shown in FIGS. 2 and 3, the weft processing device 10 is suspended and supported by a guide roller 14 and a drive roller 15 provided inside the upper wall of the frame 13 so as to be able to run on a guide rail 9. A plurality of guide rollers 1 provided in
6, the position is restricted 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 in the vicinity of the drive roller 15, and its drive bevel gear 1
7a 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 is moved left and right along the guide rail 9.

Front side of guide rail 9 (right side in Figure 3)
A shaft 20 is rotatably supported by a support bracket 19 attached and suspended from the inside of the upper wall of the frame 13. In FIG. A timing pulley 22 is fixedly attached. 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.

An arm 24 is rotatably suspended from a shaft 20 between both support pieces 19a of the support bracket 19, and a shaft 25 is rotatably supported at its lower end. The rotation range of the arm 24 is restricted by a pair of restriction rods 44 and 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. , axis 25
It is possible to rotate relative to the And the axis 25
The arm 24 and the brake lining 29 are pressed against each other by a spring 31 interposed between the arm 24 and a nut 30 screwed onto the right end of the brake lining. A weft separation member 33 is attached to the tip of the weft separation arm 28 via a leaf spring 32. 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 normally operates the limit switch 34. It is designed so that it comes into contact with the ON state. Further, a limit switch 35 for reversing the drive motor 23 is provided on the side surface of the base end of the arm 24.

Further, a pair of limit switches 46 and 47 are provided between both support pieces of the support bracket 19, and are turned on and off by a control piece 24a protruding from the base end of the arm 24 in the opposite direction. .

A weft grip 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 a tension spring 38 is interposed between the upper end of the weft grip lever 37 and the frame 13.
Therefore, 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 the frame 1
It can come into contact with a receiving part 39 formed at the lower end of the left side wall of No. 3. 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 10 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 37a and receiving part 39
The weft gripping lever 37 is rotated by the engaging protrusion 11A in the direction in which the weft gripping lever 37 is moved away from the weft gripping lever 37. Similarly, a hole (not shown) for passing the other engaging protrusion 11B is formed in the left side wall of the frame 13. That is, when the weft processing device 10 moves toward the main nozzle and the engaging protrusion 11B passes through the hole (not shown), the weft gripping lever 37 is rotated against the tension spring 38, and the engaging projection 11B is rotated against the tension spring 38. A limit switch 48 for reversing the drive motor 17 provided near the drive motor 17 is turned on. Further, a latch lever 41 is rotatably supported on a shaft 40 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 hung on 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 separating arm 28. Further, the upper edge of the locking lever 41 comes into contact with the limit switch 35 so that it can be turned on.

A pair of proximity switches 42 and 43 are vertically disposed on the right side wall of the frame 13 in close proximity to the guide rail 9. The upper proximity switch 42 corresponds to the magnets M1, M2, M3, M4, and M5 fixed to the front surface of the guide rail 9 as shown in FIG. 1, and the proximity switch 43 corresponds to the magnets M6, M7, and M5.
8, M9, and M10, and when the proximity switches 42 and 43 are operated, the drive motor 1
7 is stopped and the drive motor 23 is driven.

In this embodiment, the proximity switch 42 is activated only when the weft processing device 10 is running leftward along the guide rail 9, that is, when the drive motor 17 is rotating forward, and the weft processing device 10 is moving rightward. The proximity switch 43 is operated only when the vehicle is traveling, that is, when the drive motor 17 is rotating in reverse.

Further, when the proximity switch 42 is activated, the drive motor 23 is stopped by the limit switch 35.

Furthermore, in this embodiment, a count circuit (not shown) is incorporated in the weft processing device 10, and the limit switch 46 is put into an inactive state every time five signals from the proximity switches 42 and 43 are input.
Both switches 46, 4 by control pieces 24a, 28a
7, the drive motor 23 is not stopped.

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, the warp threads T1 and T2 move in the directions of the arrows in FIG. 4, and when the machine stops reversing, they reach the maximum opening state shown in FIG. 5. Therefore, the gripping state of the misplaced thread Y1 by the warp threads T1 and T2, that is, the weaving state is released.

After the machine is reversed, the drive motor 17 is driven forward,
The weft processing device 10 in the state shown in FIG.
It runs toward the main nozzle 1 side from the retreat position A shown in FIG. 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. Along with this, the shaft 20 is rotated in the direction of the arrow Q shown in FIG.
Rotated in the same direction as 0. In this case, since the weft separation arm 28 fixed to the timing pulley 26 is in pressure contact with the arm 24 via the brake lining 29, the arm 24 and the weft separation arm 28
A frictional torque exists between the two and no relative rotation occurs between the two. 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 W1 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 there is a temple device (not shown) just above the fabric edge near the woven fabric, the separating operation of the weft separation member 33 is performed somewhat inside the fabric edge, and a small portion of the tip of the miss thread Y1 is removed. Not separated from the fabric. When the arm 24 further rotates, the missed yarn Y1 is transferred to the weft separation member 33 as shown in FIG.
As shown in FIG. 7, when the arm 24 comes into contact with the regulating rod 45, the limit switch 46 is turned on by the control piece 24a, and the drive motor 23 is reversed. The arm 24 returns to the state shown in FIG. 3, and its rotation is restricted by the restriction rod 44. At the same time, the limit switch 47 is turned on by the control piece 24a, the drive motor 23 is stopped, and the drive motor 17 is rotated in the forward direction, so that the weft processing device 10 runs on the guide rail 9 toward the main nozzle, and the magnets M2 to The weft separation operation is performed again at position M4.

When the weft processing device 10 moves 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, so that the weft from FIG. 3 to FIG. A separation operation 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. 7, the arm 24 comes into contact with the regulating rod 45 and the rotation of the arm 24 is prevented, but the rotational force of the shaft 25 by the drive motor 23 is applied to the arm 24 and the weft separation arm 28. The shaft 25 rotates relative to the arm 24 by overcoming the frictional torque between them. As a result, the weft separation member 3
3 is rotated from the position shown by the solid line to the position shown by the chain line in FIG. The latch lever 41 is pushed upwards, the limit switch 35 is turned on, and the drive motor 2
3 is stopped. Then, the drive motor 17 is driven to rotate normally, and the weft processing device 10 travels toward the main nozzle 1 with the miss yarn Y1 being engaged and held by the weft separation member 33. Therefore, the misplaced yarn Y1 within the range between the retracted position A and the center of the weaving width is smoothly pulled out in the direction where it is least likely to collide with the warp yarns within the same range without damaging the warp yarns.

The missed yarn Y1 within the range between the retracted position A and the center of the weaving width is removed by the weft yarn processing device 3 as shown in FIG.
3 moves to the engaging protrusion 11B side, so that it is pulled out and placed outside the warp opening between the center of the weaving width and the fabric end on the main nozzle side. Moreover, 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. Stop part 41a
is latched onto the upper end of the gripping lever 37, and the gripping portion 3
7a and the receiving part 39 are maintained in a separated state.
Further, the limit switch 48 is turned on by the engagement protrusion 11B, the drive motor 17 is reversed, the weft processing device 10 runs toward the retracted position A, the drive motor 23 is reversed, and the arm 24 is moved as shown in FIG. The weft separation member 3 rotates back to the position and
3 is rotated back from the position shown by the chain line to the position shown by the solid line in the figure. Then, the separation member 33 turns on the limit switch 34, thereby stopping the drive motor 23.

As the weft processing device 10 runs, the proximity switch 43 faces the magnet M6, and the drive motor 17
will be stopped. As a result, the weft processing device 10 performs the weft separation operation at the position shown in FIG.
In this case, since the temple device is located directly above the fabric edge near the woven fabric on the main nozzle side, the end of the miss yarn Y1 remains in a state where it is not separated from the woven fabric W1. Following this weft separation operation, magnets M7, M8,
The weft separation operation is performed at the M9 position, and the first
As shown in FIG. 5, most of the missed yarn Y1 within the range between the cloth end on the main nozzle side and the center of the weaving width is separated from the woven cloth W within the warp opening.

When the weft processing device 10 reaches the position of the magnet 10, the weft separation operation of the arm 24 and the weft separation member 33 is performed, but the erroneous yarn Y in this vicinity is
1 has already been separated from the woven fabric W1, so no weft separation is performed. Following this weft separation operation, the weft separation member 33 is rotated from the position shown by the solid line in FIG. 7 to the position shown by the chain line, and the weft thread withdrawal operation is performed. By this weft pulling operation, the weft separating member does not pull out the misplaced yarn Y1 inside the warp shedding, but rather hooks the miss yarn Y1 outside the warp shedding as shown in FIG. Weft separation member 33
is the gripping part 37 in the separated state as shown in FIG.
a and the receiving part 39, and a part of the miss yarn Y1 outside the warp opening is arranged between the gripping part 37a and the receiving part 39. 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 around 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 missed yarn Y1 is moved between the two. grasped between. Further, by pushing up the latch lever 41, the limit switch 35 is turned on, the drive motor 23 is reversely rotated, and the arm 24 and the weft separation member 33 are returned to the position shown by the solid line in FIG. This causes the limit switch 34 to switch to the control piece 2.
8a, the driving of the drive motor 23 is stopped, the drive motor 17 is driven in reverse, and the weft processing device 10 moves toward the retracted position A. In this case, the center part of the missed yarn 1 is
0, as the weft processing device 10 moves toward the retracted position A, the misplaced yarn Y1 within the warp opening within the range between the fabric edge on the main nozzle side and the center of the weaving width is held at the warp opening. pulled out,
As shown in FIG. 17, when the weft processing device 10 reaches the retracted position A, almost all of the missed yarn Y1 is pulled out of the warp shedding. The erroneous yarn Y1 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 by the action of the engaging protrusion 11A, and the erroneous yarn Y1 is released, and the suction pipe 12 is activated, and the released mis-thread Y1 is suctioned and removed by the same pipe 12. In this case, the amount of rotation of the weft gripping lever 37 by the engaging protrusion 11A is smaller than that by the other engaging protrusion 11B, and the engaging part 41a of the engaging lever 41
is not hooked to the upper end of the weft gripping lever 37. Therefore, when the weft processing device 10 starts moving again from the retracted position A toward the main nozzle side due to the occurrence of a weft insertion error, the weft gripping lever 37
However, the gripping portion 37a of the weft gripping lever 37 and the receiving portion 39 are joined,
In this state, the weft separation operation is started at the position of the magnet M1.

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 weaving width. Most of the misplaced yarns 1 within the area are separated from the woven fabric W, and the weft yarn processing device 10 moves back and forth to pull out the misplaced yarns Y1 from inside the warp shedding to outside the warp shedding, and then the weft yarn processing device 10 During the backward movement, most of the misplaced yarn Y1 within the range between the fabric end on the main nozzle side and the center of the weaving width is separated from the woven fabric W, and the weft yarn processing device 10 moves back to separate the misplaced yarn Y1 from the warp. Since the warp threads are pulled out from inside the opening to the outside of the warp opening, the misplaced threads Y1 are pulled out smoothly without strongly rubbing the warp threads, and there is no risk of damaging the warp threads, and there is no possibility that the misplaced threads Y1 will break while being drawn out. Therefore, there is no risk that the misplaced yarn Y1 will remain in the warp opening and be woven into the woven fabric W after the loom is restarted.

In addition, in the present invention, in order to pull out the misplaced yarns separated from the woven fabric W from inside the warp shedding to outside the warp shedding, the weft processing device 10 is run while gripping the miss yarn Y1 that has been partially pulled out outside the warp shedding. Since a means for pulling out all the misplaced yarns in the warp shedding is adopted, there is no need to equip the weft thread processing device 10 with a weft thread pull-out mechanism for pulling out all the misplaced threads in the warp thread shedding to the outside of the warp shedding.
The mechanism can be simplified.

By employing such a weft 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 embodiments,
For example, when the weft processing device 10 goes back and forth, the amount of draw-out of the mistake yarn Y1 is smaller than the outbound travel distance of the weft processing device 10 after the start of drawing out the same mistake yarn Y1, and the mistake occurs when the weft processing device 10 goes back. Within the range in which the amount of yarn Y1 pulled out is less than the return travel distance of the weft processing device 10 after the start of pulling out the same error yarn Y1, the weft pulling position by the rotational operation of the weft separating member 33 is changed to the pulling out position in the above embodiment. It is also possible to shift the position from left to right.

Also, by fixing the arm 24 to the shaft 20, the arm 2
4 directly, and the timing pulley 2
2, 26 and the timing belt 27, the weft separation arm 28 is rotated relative to the arm 24 using a rotary solenoid or the like, or the weft separation member 33 is moved up and down using a linear actuator to separate the weft from inside the warp opening. A weft processing device in which the member 33 is moved can be employed in the present invention. Further, it is also possible to employ a weft processing device in 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.

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. It is also possible to implement a case in which entangled weft yarns are removed to prevent weaving steps or the like.

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 inside 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 cross-sectional view of the sley; Figure 4 is a vertical cross-sectional view showing the state in which mis-threads are woven into the fabric;
FIG. 5 is a longitudinal sectional view showing a state in which the woven state of the mis-woven yarn is released, FIG. 6 is a longitudinal sectional view of the main part showing the vicinity of the fabric, and FIG. 7 is a side sectional view showing a change from FIG. 3. Fig. 8 is a vertical cross-sectional view showing changes from Fig. 6;
FIG. 9 is a longitudinal cross-sectional view of a main part showing the state of pulling out a missed yarn due to the rotation of the weft separating member during the backward movement of the weft processing device, and FIGS. 10 to 17 are plan views showing the separating and pulling out action of a missed yarn. It is. Guide rail...9, weft processing device...10, weft separation member...33, woven fabric...W, warp threads T1, T2, missed thread Y...1.

Claims (1)

[Claims] 1. In a loom that is stopped based on a loom stop signal, the warp threads are made open, and the weft threads that were woven into the fabric immediately before the loom stop are released from the weaving state, and the weft threads that are woven into the fabric immediately before the loom stop are opened. The retracted weft processing device is moved in the weaving width direction and stopped at a predetermined position within the weaving width, and at the same stopping position, the weft separation member of the weft processing device is moved from outside the warp shedding into the warp shedding to weave. The weft yarns are separated from the fabric, and the weft separation operation is performed at least once within the range between the retracted position of the weft processing device and the center of the weaving width to remove substantially most of the weft yarns within the same range from the woven fabric. The weft separating member is moved from inside the warp opening to outside the warp opening while the separated weft is engaged and held at the center of the weaving width, and from this state the weft processing device is moved opposite to the retracted position. The separated weft is pulled out from inside the warp opening to outside the warp opening, and then the weft separation operation is performed within the range of the fabric edge opposite to the retracted position and the center of the weaving width. is performed at least once to separate most of the weft yarns within the same range from the woven fabric, grip the weft yarns at the center of the weaving width, and from this state move the weft yarn processing device to the retracted position. A weft processing method in a shuttleless loom, in which the entire weft is pulled out from inside the warp shedding to outside the warp shedding and removed.