JPS6262971A - Weft yarn treatment apparatus 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 device in a shuttleless loom such as a jet loom, a rapier V/I machine, or a gripper loom.

(Conventional technology) Shuttleless looms such as chef's rooms can be expected to have much higher productivity than frame looms, and there has been a noticeable trend in recent years to adopt shuttleless looms. It is a well-known fact that the rate of errors occurring is higher than that of framed looms. In the event of a weft insertion error, the machine is stopped based on the weft insertion error detector No. Since the machine is stopped after inertial operation over rotation, the weft threads that were inserted incorrectly (hereinafter referred to as "missed threads") are beaten and woven into the woven fabric just before the machine stops. Therefore, the machine is reversed and the warp threads are gripped by the wrong threads.

However, conventionally, this removal work has been done manually. However, since the misplaced yarns are inserted into the fabric in substantially the same way as normal weft yarns, even when the warp threads are set to the maximum open state, the grasping of the misplaced threads by the warp threads is not sufficiently released. Therefore, it is not easy to remove the misplaced threads, and the removal work becomes very complicated, which increases the stopping time of the loom and impedes the improvement in productivity required for high-speed looms.

An example of an attempt to solve this problem is the Japanese Patent Application Laid-Open No. 1986-
It is disclosed in Japanese Patent No. 220856.

In this conventional device, a weft processing device equipped with a single finger for separating the mis-woven fabric from the woven fabric moves from a retracted position on a guide rail installed in the weaving width direction to remove a predetermined mis-woven thread from a retracted position. The finger is moved to the processing position, slides on the woven fabric, and enters the warp opening while rubbing the front of the fabric from outside the warp opening, thereby separating the missed yarns from the woven fabric into the warp opening. ing. The mis-threads separated in this way are passed from the finger to the mis-thread pull-out means which is inserted by scraping the warp threads from outside the warp opening. A portion of the yarn is pulled out from within the warp shedding to outside the warp shedding. A part of the missed yarns pulled out of the warp shedding is pressed and held between a pair of pull-out rollers, and by driving both pull-out rollers, all of the miss yarns are pulled out from inside the warp sheath. The erroneous yarn pulled out in this way is removed by suction by a suction pipe.

(Problems to be Solved by the Invention) The first requirement in the conventional device as described above is for the fingers to catch the misplaced threads driven into the woven fabric and reliably separate the misplaced threads from the woven fabric. That's true. It goes without saying that separating a single misplaced thread from the woven fabric requires delicate finger movements, but it is necessary to slide on the woven fabric and rub the woven fabric from outside the warp opening. In this method, the tip of one finger is slightly inserted into the warp opening, and the mis-thread is caught on the tip of the finger to separate it from the woven fabric into the warp opening. Despite engaging with the thread, there is a risk of failing to catch the thread. In particular, the above-mentioned mis-thread processing device, which does not employ a means to separate and loosen mis-threads at locations other than the mis-thread pull-out position, has limited conditions such as weaving width and yarn quality, making it difficult to actually perform stable mis-thread processing work. It is difficult to do so.

Structure of the Invention (Means for Solving Problems) Therefore, in the present invention, as a weft separating member for separating weft from a woven fabric, there are two types: one that performs only the weft separating action, and the other that separates the weft and separates the weft from the warp opening. From the viewpoint of separating the separated weft yarns into those that are pulled out, a plurality of claws are provided at the tip of the weft separation member that only performs the weft separation function to scrape the fabric front and catch and separate the weft yarns. Ta.

(Function) In other words, by moving the plurality of claws into the warp shedding while rubbing the woven fabric from outside the warp shedding, there is less chance of threads being caught by mistake compared to the case where only one claw scrapes the woven fabric. The success rate of action is extremely high.

Therefore, in the erroneous thread pulling-out action by the weft thread pulling member which performs both weft separation and pulling out, the erroneous thread is separated at a location other than this drawing position, so the resistance to erroneous thread drawing is suppressed and It is possible to smoothly draw out the erroneous thread while avoiding erroneous thread cutting due to resistance.

(Example) Hereinafter, an example embodying the present invention will be described based on FIGS. 1 to 12.

As shown in FIG. 2, reference numeral 1 denotes a weft insertion main nozzle attached to one end side of the slay (not shown), and the weft yarn is guided into the main nozzle 1 via a weft length measuring and storage device (not shown). is ejected from a weft insertion main nozzle 1 into a weft guide path S formed by a large number of weft guide members 2 arranged in parallel on the sleigh. In this embodiment, a so-called drum-type weft length measuring and storing device is used as the weft measuring and storing device, which measures and stores the weft by winding the weft on a drum. The weft inserted into the weft guide path S is transferred to the weft insertion main nozzle 1 by auxiliary nozzles (not shown) disposed at predetermined intervals in the weft insertion direction, facing the weft guide member 2.
It is towed sequentially from the side in a relay manner.

When the weft ejected from the weft insertion main nozzle 1 is inserted normally and reaches the right end of the opposite main nozzle example of the woven fabric W, the weft yarn is inserted into the weft yarn guide member 2 during the beating operation, that is, together with the weft insertion. While the weft moves forward toward the woven fabric W side, the weft escapes from the guide hole 2a of the weft guide member 2 through the slit 2b, and the weft is driven into the fabric front W1ε of the woven fabric W by the reed 3, and the weft is woven. It is woven into the cloth W and cut by a cutter 4 provided near the cloth end of one main nozzle for inserting the weft into the cloth W. Thereafter, weft insertion is continued.

If a weft insertion error occurs such as the weft not reaching the fabric edge on the side opposite to the main nozzle, the weft detector (path shown) provided on the weft guide member 2 located near the fabric edge detects the weft insertion error. is detected, and the machine is stopped based on a weft insertion error detection signal from the detector.

The weft detector is composed of light emitting/receiving elements arranged opposite to each other across the slits 1-2b of the weft guide member 2, and emits a weft insertion error detection signal when the weft does not pass through the intervening slit 2b during beating. be.

After the weft insertion error detection signal (also a machine stop signal) is issued, the machine rotates almost once due to inertia and stops just before beating, and during this machine inertia operation, the machine Y is woven into the woven fabric W. Further, during machine inertia operation, weft insertion following g-miss yarn Y is about to be performed, but weft withdrawal from the weft length measuring and storage device is prevented based on the weft-insertion error detection signal.

That is, a weft locking pin that protrudes and retracts from the drum is maintained in a protruding state based on the weft insertion error detection signal in order to control the length measurement storage of the weft on the drum and the transition to the weft insertion direction, and This prevents the thread from being pulled out and unwound.

Support brackets 5 and 6 are erected on both the left and right side frames (road shown), and both brackets 5 and 6
A support rail 7 having a U-shaped cross section is installed between them. Suspension brackets 8 are fixed to the front surfaces of both ends of the support rail 7, and a drive shaft 9 is rotatably suspended from the lower end of the suspension brackets 8.

One support bracket 5 has a drive motor 1 that can be rotated in forward and reverse directions.
0 is attached to the motor 10, and a driven gear 11 fixed to the drive shaft 9 is meshed with the drive gear 10a of the motor 10. The drive motor 10 is operated based on the weft insertion error detection signal, and is rotated in the forward direction by a predetermined amount and then rotated in the reverse direction by the same amount.

A weft pull-out device 12 is disposed at the end of one main weft insertion nozzle of the support rail 7, and a plurality of weft separation devices 13 are disposed at predetermined intervals in the remaining part of the support rail 7. has been done. The weft pulling device 12 and the weft separating device 13 constitute the entire weft processing device.

The weft pulling device 12 will be described in detail. As shown in FIG. 1.3, its frame 12a is fastened to the support rail 7 so that the drive shaft 9 can rotate through both side walls. A bifurcated hanging bracket 14 is fastened to the front surface of the support rail 7 on the left side wall (left side in FIG. 1) of the support rail 12a. Same placket 14
A shaft 15 is rotatably supported between the forked ends of the shaft 15, and in FIG.
A gear 16 is fixed to the left end of the drive shaft 5 and meshes with a gear 17 fixed to the drive shaft 9. The number of teeth of the gear 16 and the gear 17 is set to be the same, so that the gear 16 rotates once for every rotation of the gear 17. A bifurcated arm 18 is rotatably supported on a shaft 15 between the support pieces 14a and 14b of the hanging bracket 14, and a timing pulley 1 is mounted on the shaft 15 within the arm 18.
9 is fixed, and the arm piece 13 of the bifurcated arm 18
A shaft 20 is rotatably supported between the tip portions a and 18b. A balance weight 21 is fixed to the connecting base end of the bifurcated arm 18.
The rotation range of the bifurcated arm 18 is restricted by contacting a pair of stoppers (not shown) provided on the hanging bracket 14. Axis 1 between arm pieces 18a and 18b
A timing pulley 22 is fixed to the timing pulley 5 , and a timing belt 23 is hung between the intermediate pulley 22 and the timing pulley 19 .

A clutch stand 24 is fixed to the outer surface of one arm piece 18H so as to be rotatable about the shaft 20, and a brake lining 25 is fixed to the clutch 24. Arm piece 1
On the side of 8a, a clutch base 26 is fixed to the shaft 20 in correspondence with the clutch base 24, and a brake lining 27 is fixed on the inside of the brake pad 26 and can come into contact with the brake lining 27. It looks like this. A nut 28 is screwed onto the left end of the shaft 20, and a pressure spring 29 is interposed between the nut 28 and the arm piece 18b. Therefore, the entire shaft 20 is biased to the left in FIG. 1, and both brake linings 25, 27 are pressed against each other. An arm 30 is fixed to the right end of the shaft 20 so as to be perpendicular to the shaft 20, and as shown in FIG.
A leaf spring 31 is fastened to the tip of the spring 31 with a screw 73, and a claw piece 32 is fastened to the tip of the spring 31 with a screw 74. That is, arm 3
0. The leaf spring 31 and the claw piece 32 constitute a weft drawing member that performs both weft separation and drawing.

As shown in FIG. 1, within the frame 12a, a hanging bracket 33 is attached to the support rail 7 on the right wall side of the frame 12a.
An air cylinder 34 is supported so as to be able to swing in the direction of the support rail 7 at the annular tip of the hanging bracket 33, which is fastened to the front surface and projects obliquely forward as shown in FIG. .

Near the bottom of the air cylinder 34, a shaft 35 is rotatably supported in a direction perpendicular to the support rail 7.
A bifurcated crank arm 36 is fixed to the front end of the crank arm. A connecting shaft 37 is rotatably installed between the arm pieces 36a and 36b of the crank arm 36.
A screw 38 is slidably penetrated from below. The screw 38 is at the tip of the drive rod 34a of the air cylinder 34.

In addition, a nut 39 is screwed into the screw 38. A pressing spring 40 is interposed between the nut 39 and the connecting shaft 37, so that the connecting shaft 37 and the head of the screw 38 are always in contact with each other.

As shown in FIG. 3, a shaft 41 is located below the rear end of the shaft 35.
is rotatably supported, and gears 42 and 43 fixed to the rear ends of the shafts 35 and 41 are meshed with each other. A support arm 44 is fixed to the front end of the shaft 41 so as to be perpendicular to the shaft 41, and a driven roller 45 is rotatably supported at the tip of the arm 44. The driven roller 45 is always in the retracted position shown by the solid line in FIG. 1, and the crank arm 36 is moved down by the operation of the air cylinder 34, and the driven roller 45 is rotated from the retracted position to the position shown by the chain line. The air cylinder 34 is activated when the drive motor 10 is switched from forward rotation to reverse rotation.

As shown in FIG. 1, a shaft 46 is rotatably supported between the gears 42, 43 and the suspension bracket 14 in parallel to the shaft 35, 41, and a central portion of the shaft 46 is provided with a drive shaft. A roller 47 is fixed to it, and a gear 48 is fixed to the front end. As shown in FIG. 3, a motor 49 is disposed slightly ahead and above the gear 48, and the drive gear 49a and the gear 48 are meshed with each other. The motor 49 is operated based on the weft insertion error detection signal, and thereby the drive roller 47 is rotated in the direction of the arrow shown in FIG. The driven roller 45 is brought into pressure contact with the driving roller 47 by the operation of the air cylinder 34, and is rotated together with the driving roller 47.

As shown in FIG. 1, a support piece 50 is fixed to the right side of the hanging bracket 14, and a suction pipe 51 connected to a suction device (not shown) is vertically supported on the support piece 50. ing. The suction port 51a of the pipe 51 is arranged on the lower surface side of the drive roller 47. The suction device is operated based on a weft insertion error detection signal.

Next, to explain the weft separation device 13 in detail, as shown in FIG. A frame 13a is fastened to the upper end surface, and a drive shaft 9 rotatably passes through both side walls of the frame 13a. The mechanism inside the frame 13a is almost the same as the mechanism supported by the hanging bracket 14 in the weft drawing device 12, and the rotational drive of the drive shaft 9 is carried out by a gear 53 which is meshed with a gear 53 fixed to the same shaft 9. A shaft 5 rotatably installed between the forked ends of the hanging bracket 52 via the
5. The gear ratio of the gear 54 to the gear 53 is the same as that of the gear 1 to the gear 17 in the weft pulling device 12.
The tooth number ratio of 6 is set larger than 1. A bifurcated arm 56 is rotatably supported on the shaft 55, and the shaft 5 is disposed between the distal ends of arm pieces 56a and 56b of the arm 56.
7 is rotatably supported. A balance weight 58 similar to the balance weight 21 of the 12 examples of the weft pulling device is fixed to the connecting base end of the bifurcated arm 56. Also on the weft separation device 13 side, a balance weight 58 comes into contact with a pair of stoppers (not shown), so that the range of rotation of the bifurcated arm 56 is restricted. A timing pulley 59.60 is fixed to the shaft 55.57 between the arm pieces 56a and 56b, and both pulleys 59.
, 60, a timing belt 61 is hung between them.

A nut 62 is screwed onto the left end of the shaft 57, and a pressure spring 63 is interposed between the nut 62 and the arm piece 66b. Therefore, the entire shaft 57 is biased to the left,
The brake lining 65 fixed to the clutch stand 64 on the arm piece 56a side and the brake lining 67 fixed to the clutch stand 66 of the shaft 57 are pressed together. An arm 68 is fixed to the right end of the shaft 57 so as to be perpendicular to the shaft 57, and a wide slope spring 69 is fixed to the tip of the arm 68 by tightening with a screw 70, as shown in FIGS. At the same time, there are a plurality of notches 69 on the tip side of the spring 69.
a (five in this example) are formed. and,
A plurality of spring pieces 69b divided by each notch 69a
A claw piece 71 (of which there are six in this embodiment) is tightened and fixed to each end by a screw 72. That is, the arm 68, the leaf spring 69, and the plurality of claw pieces 71 constitute a weft separation member that performs only the weft separation function.

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, the erroneous thread Y is woven into the weft front W1 of the woven fabric W as described above, and the erroneous thread Y is woven into the weft inserter following the erroneous thread Y during machine inertia operation based on the weft insertion error detection signal. Weft insertion of the weft that is about to be ejected from the main nozzle 1 is prevented on the weft length measuring and storage device side. After the machine stops, the machine is automatically reversed once and a half, and the reed 3 is moved to the third position.
It stops at the most retracted position shown in the figure. With this machine reversal,
The warp threads T1 and T2 reach the maximum open state shown in FIG. Therefore, the gripping state of the miss thread Y by the warp threads Tl and T2,
In other words, the weaving state is released.

Based on the weft insertion error detection signal, the drive motor 10 is rotated forward after the machine is reversed, and the drive shaft 9 is thereby rotated in the direction indicated by arrow P in FIGS. 3 and 7.

The rotation of the drive shaft 9 is transmitted to the shaft 15 in the weft pulling device 12 via gears 17 and 16, and is transmitted to the shaft 55 in the weft separating device 13 via gears 53 and 54.

As shown in FIG. 3, on the weft pulling device 12 side, the shaft 15 is rotated in the direction of the arrow Q shown in the same figure, and this rotation is transmitted to the shaft 20 via the timing belt 23, and the same shaft 20 is connected to the shaft tS. rotated in the same direction. In this case, the trifurcated arm 18 side and the shaft 20 side are connected to the brake lining 25.
．． 27, there is a friction torque between the bifurcated arm 18 and the shaft 20 according to the acting force of the pressing spring 29, and there is no relative rotation between the two. Does not occur. Therefore, the bifurcated arm 18 and the shaft 20 rotate clockwise about the shaft 15 from the state shown in FIG. 3 as a unit. As the bifurcated arm 18 and the shaft 20 rotate, the tip of the claw piece 32 slides on the woven fabric W and moves toward the woven fabric W1 side. Then, as shown in FIG. 10, when the tip of the claw piece 32 reaches the woven fabric W1, the tip of the claw piece 32 engages with the missed yarn Y, and the missed yarn Y near the weft pulling device 12 is pulled out from outside the warp opening. Claw piece 3 entering the warp opening
2, it is separated from the woven fabric W as shown in FIG.

On the other hand, on the weft separation device 13 side, the shaft 55 is connected to the shaft 1
This rotation is transmitted to the shaft 57 via the timing belt 61, and the intermediate shaft 57 is rotated in the same direction as the shaft 55. in this case,
Similar to the weft pulling device 12 side, the forked arm 56 side and the shaft 57 side are pressure-connected via the brake lining 65, 67, so there is a pressing spring between the forked arm 56 and the shaft 57. There is a friction torque corresponding to the acting force of 63, and no relative rotation occurs between the two.

Therefore, the bifurcated arm 56 and the shaft 57 rotate clockwise about the shaft 55 from the state shown in FIG. 7 as a unit. In this case, the ratio of the number of teeth between the gears 16 and 17 of the 12 examples of weft pulling devices and the gear 3 of the weft separating device 13
Because the tooth number ratio between 3.34 and 34 is set differently,
When the claws 32 of the 12 examples of weft pulling devices are rotated to the position shown by the solid line in FIG. 4, the plurality of claws 71 are rotated to reach the vicinity of the woven fabric W as shown by the chain line in FIG. Only.

When the claw piece 32 on the weft pulling device 12 side reaches the solid line position shown in FIG.
8 is prevented from rotating. Therefore, the arm 18 stops at the solid line position shown in FIG. rotates relative to the bifurcated arm 18. As a result, in a state where the claw piece 32 engages and holds the miss thread Y, the claw piece 32 is rotated clockwise around the shaft 20 from the chain line position shown in FIG. It is rotated to the solid line position outside the warp opening shown in the figure. That is, a part of the miss yarn Y that was engaged and held by the claw piece 32 is pulled out from inside the warp opening to outside the warp opening, and is drawn out and placed between the driving roller 47 and the driven roller 45.

At this point, on the weft separation device 13 side, as shown in the ninth time, the plurality of claw pieces 71 have entered the warp shedding while rubbing the m front W1 from outside the warp shedding, and the missed yarn near the weft separation device 13 A portion of Y1 is separated from the fabric front W1 into the warp opening. In the weft separation action on the weft separation device 13 side, a plurality of claw pieces 71 rub against the fabric front W1 from outside the warp shedding and enter into the warp shedding. In comparison, the success rate is much higher, and the separation effect of the misplaced yarn Y from the woven fabric W1 is stable.

When the misplaced yarn Y is pulled out and placed between the drive roller 47 and the driven roller 45, the drive motor 10 stops and is operated in reverse.At this time, the air cylinder 34 is activated and the driven roller 45 moves as shown by the solid line in FIG. It is rotated from the retracted position shown to the chain line position where it comes into contact with the drive roller 47. Therefore, the misplaced yarn Y drawn out between both rollers 47 and 45 is caught on the driven roller 45 and
and a drive roller 47. At this point, the motor 49 is operated based on the weft insertion error detection signal, and the drive roller 47 is rotating in the direction of the arrow shown in FIG. As a result, the miss thread Y held under pressure between both rollers 47 and 45 is transferred to the suction port 51a of the suction pipe 51.
guided to the side.

In this state, as shown in FIG. 6, the head of the screw 38 screwed into the drive rod 34a of the air cylinder 34 is
7, and the driven roller 45 is pressed against the driving roller 47 by the action of the pressing spring 40. This pressure contact force can be changed as appropriate by adjusting the screwing position of the nut 39. At the time when the miss yarn Y is pressed and held between both rollers 47.45, a suction device (not shown) connected to the suction pipe 51 is activated, and the miss thread Y is guided from between both rollers 47.45 to the suction port 51a side. The yarn Y is suctioned into the suction pipe 51 as shown in FIG.

Therefore, the missed yarn Y that is separated from the fabric front W1 into the warp opening by the weft pulling device 12 and the weft separating device 13
is sequentially pulled out from inside the warp opening to outside the warp opening by the cooperation of the rotation pulling action of both rollers 47 and 45 and the suction action of the suction pipe 51, and is sucked and removed into the suction pipe 51. When the erroneous yarn is pulled out by the cooperation of the rotational pull-out action of both rollers 47 and '45 and the suction action of the suction pipe 51, the erroneous yarn is sufficiently separated even in places other than the vicinity of the weft thread pull-out device 13. The pull-out resistance is suppressed, and the pull-out of the miss thread by the weft thread pull-out device 12 is carried out smoothly without fear of cutting the miss thread Y.

The weft pulling device 12 is activated by the reverse operation of the drive motor 10.
On the side, the claw piece 32 and the bifurcated arm 18 are integrally rotated counterclockwise around the shaft 15, with the claw piece 32 being rotated outside the warp shedding, Nail piece 3
2 is moved from the chain line position to the solid line position shown in FIG.

Then, the balance weight 21 comes into contact with the second stone (not shown), and the rotation of the bifurcated arm 18 is stopped. Thereafter, similarly to the above, the claw piece 32 side overcomes the frictional torque between the brake linings 25 and 27 and rotates relative to the forked arm 18, returning from the solid line position in FIG. 6 to the retracted position shown in FIG. 3. do.

On the other hand, on the weft separation device 13 side, as shown in FIG. 9, the plurality of claw pieces 7F that have entered the warp opening are arranged to rotate integrally with the forked arm 56 from inside the warp opening to outside the warp opening. When the claw piece 32 on the weft pulling device 12 side returns to the retracted position, it returns to the retracted position shown in FIG. 7.

゛When the claw piece 32 and the plurality of claw pieces 71 return to the retracted position, the drive motor 10 is stopped, and when all the misplaced threads Y are suctioned and removed into the suction vibrator 51, the motor 49 is connected to the suction pipe 51. The operation of each of the suction devices is stopped, and the drive rod 34a of the air cylinder 34 returns to its original position.

Thereafter, the loom is automatically reversed by a predetermined amount, stops at the rotational position most suitable for restarting, and the loom resumes operation.

As described above, in this embodiment, the single claw piece 32 performs the function of separating the misplaced yarn Y from the woven fabric front W1 and pulling out the misplaced yarn Y from the inside of the warp entrance to the outside of the warp opening. The action of simply separating the yarn Y is performed by the plurality of pawl pieces 71, and by reliably separating the missed yarn Y from the fabric front W1 on each weft separation device 13 side, the warp yarn is separated on the weft withdrawal device 12 side. It is possible to suppress the pull-out resistance when pulling out and removing the misplaced yarns Y from inside the shedding to the outside of the warp shedding, thereby avoiding cutting of the misplaced yarns Y caused by the pull-out resistance, and removing all the misplaced yarns Y from inside the warp shedding to the warp. It can be smoothly pulled out of the opening and removed. Moreover, the plurality of pawls 71, which perform only the weft separation function, are returned from the inside of the warp opening to the outside of the warp opening along the forward movement path at positions other than the missed yarn pulling-out position, that is, the installation position of the weft pulling-out device 12. This prevents the situation where the misplaced thread Y is caught and pulled out of the warp opening, and the warp threads are damaged due to the breakage of the misplaced thread Y due to pulling out the misplaced thread Y from multiple positions or the resistance to pulling it out from the original position. Such problems will also be resolved.

Further, in both the weft pulling device 12 and the weft separating device 13, the presence of the balance weight 21.58 allows the bifurcated arms 18 and 56 to rotate smoothly, as shown in FIG. 3.5.7, for example. Forked arm 18
．． 56 is placed horizontally, the rotational moment exceeds the frictional force between the brake linings 25 and 27 and between the brake linings 25 and 65, causing the pawl pieces 3-2 and the plurality of pawl pieces 71 to rotate. There is no risk of it happening.

Of course, the present invention is not limited to the above-mentioned embodiment. For example, as shown in FIG. It is also possible to set it to shift. According to such a configuration, in the same figure, the fabric will be rubbed sequentially starting from the right claw piece 71, and even if the first claw piece 71 fails to separate the mis-threads, the left claw piece As the separation action by the pieces 71 progresses, the missed threads near these claw pieces 71 are loosened little by little by the engagement with the claw pieces 71, and the missed threads loosened slightly in this way are attached to the left claw piece 71. It is securely hooked and separated from the fabric.

In this embodiment, the tips of the claw pieces 71 are arranged separately in the weaving width direction, but a configuration in which the claw parts are arranged separately only in the warp direction is also possible. According to this configuration, the claw part rubs against the same part of the misplaced thread, and even if separation fails at first, the cumulative effect of the slight loosening action due to the engagement between the claw part and the misplaced thread is large. , mis-separation of threads becomes more reliable.

Alternatively, an elongated hole is provided in the longitudinal direction of the spring piece 69b so that the tightening position of the claw piece 71 can be adjusted with respect to the spring piece 69b, or a plurality of claw parts for weft separation are integrally formed with the spring piece. is also possible.

Moreover, the embodiment shown in FIG. 14 is also possible according to the present invention. In this embodiment, both long and short moving shafts 75 and 76 are used,
The short drive shaft 76 is rotatably supported by a pair of hanging brackets 8 on the weft insertion main nozzle l side, and is operatively connected to a drive motor IOA mounted and supported by the support brackets 6. The rotational driving force of the drive shaft 76 is transmitted only to the weft pulling device 12 side, and the erroneous thread separation and pulling action of the claw piece 32 is performed. On the other hand, the long drive shaft 75 is operatively connected to the drive motor 10 mounted and supported on the support bracket 5 side as in the previous embodiment, and the rotational driving force of the coaxial shaft 75 is transmitted only to the plurality of weft separation devices 12. ,
Mistake thread separation action of the plurality of claw pieces 71 is performed. That is, in the embodiment described above, the amount of rotation between the bifurcated arms 18 and 56 is determined based on the difference between the ratio of the number of teeth between the employed gears 16 and 17 and the ratio of the number of teeth between the gears 53 and 54. The claw pieces 32 are made to perform both the mis-thread separating and pulling-out actions, and the plurality of claw pieces 71 are made to perform only the mis-thread separating action, but in this embodiment, the drive motor 10 is The same weft separation and pulling action as described above is performed by making a difference between the amount of rotation and the amount of rotation of the drive motor IOA. According to this embodiment, the redrive motor 10. By adjusting the rotation amounts of the IOAs, it is possible to easily set the optimal timing for the erroneous yarn separation and pull-out action of the weft thread pull-out device 12 and the erroneous thread separation action of the 13 examples of the weft thread separation devices.

Furthermore, as another example of the present invention, the embodiment shown in FIG. 15 is also possible. Weft drawing device 77 in this embodiment
has almost the same structure as the weft pulling device 12 in the embodiment described above, but one arm piece 1 of the forked arm 18
8a, an arm 78 is fixed to the tip of the arm 78, a leaf spring 79 similar to that of the above embodiment is fixed, and a plurality of claw pieces 80 are respectively tightened and fixed to a plurality of spring pieces 79a. This is different from the example. Each claw piece 80 is disposed close to the claw piece 32 that performs the weft separation and pulling operation, and just before the claw piece 32 rubs the woven fabric surface W1, the plurality of claw pieces 80 touch the woven fabric surface W1. It is designed to rub off.

That is, the plurality of claw pieces 80 serve to slightly separate the misplaced threads near the claw pieces 32 from the woven fabric, and the misplaced threads caught by the claw pieces 32 that enter the misthread separating action following each claw piece 80 are prevented. This is to ensure that the action and withdrawal action are carried out reliably.

Of course, it is also possible to arrange the plurality of claws 71 of the weft separation device 13 in the embodiment described above in close proximity to the claws 32.

In addition, the present invention can be used not only to handle misplaced yarns, but also to separate weft yarns inserted from the woven fabric during inertia operation immediately before an artificial stop of the machine, or to handle changes in the weaving width. The number of installed weft separation devices 13 can be increased or decreased as appropriate, a device that only performs weft separation can be configured to be movable in the weaving width direction, or a weft yarn that is about to be inserted following a misplaced yarn during machine inertia operation can be used. It is also possible to embody the present invention in a loom that prevents weft insertion in front of the weft insertion device, or to apply the present invention to a shuttleless loom other than a jet loom.

Effects of the Invention As detailed above, according to the weft processing device of the present invention, by providing a plurality of pawl members that perform only the weft separation action and rubbing the fabric front, the success rate of weft separation is extremely high, and the warp This provides an excellent effect in that the weft can be smoothly pulled out from inside the shedding to outside the warp shedding.

[Brief explanation of the drawing]

1-12 show an embodiment embodying the present invention, FIG. 1 is a front sectional view showing a weft pulling device and a weft separating device, FIG. 2 is a plan view of the road body, and FIG. 3 is a weft pulling device. 4 to 6 are side sectional views of the weft pulling-out device to explain the weft separating and weft pulling-out functions. FIG. 7 is a side sectional view of the weft separating device. Figure 8 shows only the weft separating function. FIG. 9 is a side sectional view illustrating the weft separation action, FIGS. 10 to 12 are action views illustrating weft separation and withdrawal, and FIG. 13 is a diagram showing another aspect of the present invention. FIG. 14 is a plan view of a road body showing another example of the present invention, and FIG. 15 is a front sectional view showing another example. Weft thread pulling device 12, weft thread separating device 13, claw piece 32 as a claw part of a weft thread pulling member that performs both weft separation and weft thread pulling out, claw piece 71 as a claw part of a weft separation member that performs only the weft separating action. , warp TI, T2, miss thread Y
.

Claims (1)

[Claims] 1. With the warp in an open state and the weft that was woven into the woven fabric immediately before the machine stopped being woven, the weft enters the warp opening from outside the warp opening and moves the weft from the front of the weft into the warp opening. In a weft processing device comprising a weft separation member for separating the weft yarns, and a weft draw-out member that separates the weft yarns from the front of the fabric into a warp opening and pulls out the weft yarns from the inside of the warp opening to the outside of the warp opening, A weft processing device for a shuttleless loom, which is provided with a plurality of claws for separating the weft by rubbing the front.