JPH0633544B2 - Weft processing method for shuttleless loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a weft processing method in a shuttleless loom such as a jet loom, a rapier loom or a gripper loom.

(Prior art) With regard to shuttleless looms such as jet loom, we can expect much higher productivity than the shuttleless looms, and the tendency to adopt the shuttleless looms has been remarkable in recent years, but weft insertion errors have occurred. It is a well-known fact that the ratio is higher than that of the shuttlecock loom. When a weft insertion error occurs, the machine is stopped based on the weft insertion error detection signal from the weft detector, but in high-speed weaving machines such as a shuttleless loom, one machine revolution or more is taken into consideration to prevent damage to each part. Since the machine base is stopped after the inertial operation, a weft thread that has been miss-inserted (hereinafter referred to as a miss thread) is beaten and woven into a woven fabric immediately before the machine base is stopped. For this reason, it is necessary to reverse the machine base to release the grasped state of the miss yarn by the warp and remove the miss yarn, but conventionally, this miss yarn removal work has been performed by acquisition. However, since the miss yarn is struck in the woven fabric almost in the same manner as the normal weft yarn, even if the warp yarn is in the maximum open state, the miss-type grasping state by the warp yarn is not sufficiently released. Therefore, it is not easy to remove the miss yarn, and the removing operation becomes very complicated, and the stop time of the loom becomes long, which hinders the productivity improvement required for the high-speed loom.

One example of trying to solve such a problem is JP-A-58-58.
It is disclosed in Japanese Patent No. 220856.

In this conventional device, as shown in FIG. 13, a first pneumatic cylinder 2 in a main frame 1 is movably suspended on a guide rail (not shown) provided in the weft width direction,
An auxiliary frame 3 is attached to the piston rod 2a. A second pneumatic cylinder 4 is attached to the auxiliary frame 3, and a third pneumatic cylinder 5 is attached to its piston rod 4a. A receiving body 6 is provided on the cylinder 5 side, and a pressing body 7 is provided on the piston rod 5a side of the pneumatic cylinder 5 so that the weft can be held by both. Further, a pair of pull-out rollers 8 and 9 are provided in the lower portion of the auxiliary frame 3, and elastic fingers 10 are provided below the auxiliary frame 3 so as to reciprocally swing so as to draw a substantially elliptical locus. There is.

That is, this conventional miss yarn processing device is always retracted to a predetermined retracted position and is moved to a predetermined position along the guide rail when a weft insertion error occurs. And
The second pneumatic cylinder 4 is actuated to move the receiving body 6 and the pressing body 7 downward, and one pulling roller 9 is pushed away to insert the receiving body 6 and the pressing body 7 into the warp opening, and at the same time, the fingers. 10 is inserted from outside the warp opening into the opening while hooking the miss thread. As a result, the miss yarn is separated from the woven fabric W, and is also passed between the receiving body 6 and the pressing body 7. By operating the third pneumatic cylinder 5, the same weft yarn is pressed against the receiving body 6. It is grasped by the body 7. After that, the second pneumatic cylinder 4 is operated to move the receiving body 6 and the pressing body 7 upward, and pull out the weft yarn from the warp yarn opening,
By driving both pull-out rollers 8 and 9, all the miss yarns are pulled out from the warp shed. The miss yarn thus drawn out is sucked by the suction pipe 1 provided in the auxiliary frame 3.
1 is suctioned off.

(Problems to be Solved by the Invention) However, the method of moving and disposing the miss yarn separating device at the predetermined position as described above to perform the weft yarn separating process is to separate one miss yarn from the cloth fell of the woven fabric W. It lacks certainty in requiring extremely delicate movements. Moreover, woven fabric W
Both the receiving body 6 and the pressing body 7 for gripping the miss yarn separated from the warp yarn are inserted into the warp yarn opening hand, but such a member other than the weft separating finger 10 separates the warp yarn into the opening. Insertion into or out of the opening results in an increase in the rate of damaging the warp threads, which is also undesirable because it induces warp cutting. In particular, when the receiving body 6 and the pressing body 7 are pulled out from the inside of the warp yarn to the outside of the warp yarn opening, the warp yarn is likely to be caught, and the miss yarn may not be reliably removed.

Also, the finger 10 reciprocally rotates in a substantially elliptical orbit,
Since the miss yarn separated from the woven fabric W by the finger 10 is delivered between the receiving body 6 and the pressing body 7 in the warp opening having no space, it is difficult to set the grip timing of the miss yarn.

Furthermore, in the above-mentioned conventional device, since the miss yarn is pulled out of the warp opening without being loosened, conditions such as weaving width and yarn quality are limited, and it is difficult to actually carry out a stable miss yarn processing operation. Is.

Further, since the miss yarn processing device is of a movable type, not only does it take time to move to the processing position, but it also has to be stopped at a predetermined position after the movement, which complicates the mechanism for its control. From the aspect, it lacks stability.

Structure of the Invention (Means for Solving the Problems) Therefore, in the present invention, a weft separating device that functions only to separate the weft from the woven fabric, and a weft separating device that separates the weft from the inside of the warp opening to the outside of the warp opening. From the standpoint of installing the weft pulling-out device for pulling out the wefts and the weft pulling-out device, which are set at predetermined positions in the width direction of the weaving, the weaving state of the wefts that has been woven into the woven fabric is released immediately before the machine stand is stopped by forming the warp opening state. A weft separating member of at least one weft separating device installed at a predetermined position in the weft width direction near the upper part of the cloth fell is moved from the predetermined retracted position along a weft separating path that rubs the cloth. Is separated from the cloth fell into the warp opening, and then the weft separating member is moved and returned from the inside of the warp opening to the retracted position substantially along the weft separating path, while the predetermined position is provided near the upper part of the cloth fell. The weft pulling member of the weft pulling device installed at a predetermined position different from that is moved from the predetermined retracted position along the weft separating path rubbing the cloth to separate the weft from the cloth into the warp opening. Then, the weft drawing member is moved from the inside of the warp opening to the outside of the warp opening along a path different from the weft separation path to pull out the weft from the inside of the warp opening to the outside of the warp opening and to the retracted position. I tried to come back.

(Operation) That is, when a weft insertion error occurs and the miss yarn is woven into the woven fabric, the open state of the warp yarn is formed to cancel the woven state of the miss yarn woven into the woven fabric. Operate the separating device and the weft drawing device. As a result, the weft separating member of the weft separating device and the weft extracting member of the weft drawing device enter the warp opening from the retracted position outside the warp opening along those weft separating paths that rub the cloth cloth, and the weft separating member and the weft are separated. Each of the pull-out members separates the miss yarn from the woven fabric. Thereafter, the weft separating member returns from the inside of the warp opening to the retracted position outside the warp opening substantially along the weft separating path, and the weft drawing member removes the miss yarn along a weft drawing path different from the weft separating path. It moves from the warp shed to the outside of the warp shed while holding it. Therefore, a part of the miss yarn separated from the cloth fell into the warp opening is pulled out from the inside of the warp opening to the outside of the warp opening and can be removed by an appropriate means. The weft drawing member that has pulled out the miss yarn from the inside of the warp opening to the outside of the warp opening returns to the retracted position by releasing the miss yarn and prepares for the next weft insertion error together with the weft separating member.

The configuration in which the weft separating device and the weft extracting device are preliminarily installed at predetermined positions can correspond to an extremely delicate operation required for separating one miss yarn from the woven cloth, and the miss yarn separation is reliably performed. . In this way, the miss yarn separated from the woven fabric into the warp yarn opening is drawn out from the inside of the warp yarn to the outside of the warp yarn opening along the movement path of the weft drawing member,
Compared with the method of gripping the miss yarn in the warp yarn opening where there is not enough space, it is much easier to set the timing for delivering and gripping the miss yarn, and the miss yarn is reliably removed. In addition, since the members inserted into the warp shed are only the members that perform the weft separating action, that is, the weft separating member and the weft pulling member, the warp is less likely to be damaged. In addition, the weft separating member, which acts only to separate the miss yarn from the woven fabric, returns to the retracted position outside the warp yarn opening substantially along the weft separating path. There is no risk of pulling out the yarn to the wrong position, and the situation where the wrong yarn is pulled out from a plurality of positions is avoided.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 2, reference numeral 21 denotes a weft insertion main nozzle mounted on one end side of a sley (not shown), which is guided into the main nozzle 21 via a weft measuring and storing device (not shown). Is inserted into the weft guide passage S formed by a plurality of weft guide members 22 arranged side by side on the sley from the main weft insertion nozzle 21. In this embodiment, a so-called drum type weft measuring and storing device is used as the weft measuring and storing device, in which wefts are wound on a drum and measured and stored. The weft yarns inserted into the weft yarn guide passage S are sequentially relayed from the weft insertion main nozzle 21 side by an auxiliary nozzle (not shown) which faces the weft yarn guide member 22 and is arranged at predetermined intervals in the weft insertion direction. To be done.

When the weft yarn ejected from the weft inserting main nozzle 21 is properly inserted into the weft W and reaches the cloth end on the side opposite to the main nozzle of the woven fabric W, the weft guide member 22 is in the middle of the beating operation, that is, together with the sley. As the weaving progresses toward the woven fabric W side, the weft yarn escapes from the guide hole 22a of the weft yarn guide member 22 through the slit 22b, and the weft yarn is struck by the reed 23 on the cloth fell W1 of the woven fabric W. The cloth W is woven and cut by a cutter 24 provided near the cloth end on the weft insertion main nozzle 21 side of the cloth W. Then, the subsequent weft insertion is continued.

When a weft insertion error occurs such that the weft does not reach the cloth end on the side opposite to the main nozzle, a weft detector (not shown) provided in the weft guide member 22 located near the cloth end causes a weft insertion error. Is detected, and the machine base is stopped based on the weft insertion error detection signal from the same detector. The weft detector is the slit 2 of the weft guide member 22.
The weft insertion error detection signal is generated when the weft thread does not pass through the slit 22b at the time of beating.

After the weft insertion error detection signal (which is also a machine standstill signal) is issued, the machine stand rotates about once about inertia and stops immediately before beating. Woven W
Is woven into. Further, the weft insertion following the miss yarn Y is about to be performed during the machine base inertia operation, but the weft insertion from the weft measuring and storing device is prevented based on the weft insertion error detection signal. That is, in order to control the measurement storage of the weft on the drum and the shift to the weft inserting direction, the weft locking pin protruding and retracting from the drum is maintained in the protruding state based on the weft insertion error detection signal, The unwinding and unwinding of the winding yarn is prevented.

Support brackets 25 and 26 are erected on both left and right side frames (not shown).
A support rail 27 having a U-shaped cross section is provided between the Nos. 5 and 26. A suspension bracket 28 is fixed to the front surfaces of both ends of the support rail 27, and a drive shaft 30 is attached to the lower end thereof.
Is rotatably suspended and supported. A drive motor 31 capable of rotating in the forward and reverse directions is mounted on one of the support brackets 25, and a driven gear 32 fixed to the drive shaft 30 meshes with a drive gear 31 a of the motor 31. Drive motor 3
1 is operated based on the weft insertion error detection signal, and is rotated in the forward direction by a predetermined amount and then in the reverse direction by the same amount.

A weft drawing device 33 is arranged at an end of the support rail 27 on the weft insertion main nozzle 21 side, and a plurality of weft separating devices 34 are arranged at predetermined intervals in the remaining part of the support rail 27. Has been done.

The weft pulling device 33 will be described in detail. As shown in FIGS. 1 and 3, the frame 33a is fixed to the support rail 27 so that the drive shaft 30 can rotatably pass through both side walls. A bifurcated suspension bracket 35 is fastened and fixed to the front surface of the support rail 27 on the left side wall (left side in FIG. 1) of 33a. A shaft 36 is rotatably supported between the forked ends of the bracket 35, and a gear 37 is fixed to the left end of the shaft 36 on the side of the suspension bracket 35 in FIG. It meshes with a gear 38 fixed to the drive shaft 30. The gears 37 and 38 have the same number of teeth, and the gear 37 rotates once for each rotation of the gear 38. A forked arm 39 is rotatably supported by the shaft 36 between the forked ends of the suspension bracket 35, and the timing pulley 4 is mounted on the shaft 36 in the arm 39.
0 is fixed, and the arm piece 39 of the bifurcated arm 39
A shaft 41 is rotatably supported between the tips of a and 39b. A balance weight 42 is fixed to the connecting base end of the bifurcated arm 39.
By contacting a pair of stoppers (not shown) provided on the suspension bracket 35, the rotation range of the bifurcated arm 39 is restricted. Axis 3 between arm pieces 39a, 39b
A timing pulley 43 is fixedly attached to 6, and a timing belt 44 is hung between the pulley 43 and the timing pulley 40.

A clutch base 45 is rotatably attached to the outer surface of one arm piece 39a with respect to the shaft 41, and a brake lining 46 is attached to the base 45. Arm piece 3
On the side of 9a, a clutch base 47 is fixed to the shaft 41 in correspondence with the clutch base 45, and a brake lining 48 is fixed to the inside of the base 47 so that the brake lining 48 can come into contact with the brake lining 46. It has become. Axis 4
A nut 49 is screwed to the left end portion of No. 1 and a pressing spring 50 is interposed between the nut 49 and the arm piece 39b. Therefore, the entire shaft 41 is biased to the left in FIG. 1, and both brake linings 46 and 48 are pressed against each other. An arm 51 is fixed to the right end of the shaft 41 at right angles to the shaft 41, and a leaf spring 52 is fixed to the tip of the arm 51 as shown in FIG. A weft drawing member 53 is fixedly attached to the tip of the.

As shown in FIG. 1, a suspension bracket 54 is provided in the frame 33a on the right side wall side of the frame 33a for supporting rails 2.
The air cylinder 55 is swingably supported in the direction of the support rail 27 at the annular front end portion of the suspension bracket 54 which is fixedly fastened to the front surface of the suspension bracket 7 and which is inclined and projected forward as shown in FIG. There is. The shaft 5 is provided near the lower part of the air cylinder 55.
6 is rotatably supported in a direction orthogonal to the support rail 27, and a bifurcated crank arm 57 is fixed to the front end of the coaxial shaft 56. A connecting shaft 58 is rotatably installed between the arm pieces 57a and 57b of the crank arm 57, and a screw 59 is slidably penetrated from the lower side to the coaxial shaft 58. The screw 59 is screwed onto the tip of the drive rod 55a of the air cylinder 55, and
A nut 60 is screwed onto the shaft 9. And nut 6
A pressing spring 61 is interposed between 0 and the connecting shaft 58 so that the connecting shaft 58 and the head of the screw 59 are always in contact with each other.

As shown in FIG. 3, a shaft 62 is provided below the rear end of the shaft 56.
Is rotatably supported, and gears 63 and 64 fixed to the rear ends of the shaft 56 and the shaft 62 are screwed together. A support arm 65 is fixed to the front end of the shaft 62 so as to be orthogonal to the shaft 62, and a driven roller 29 is rotatably supported at the tip of the arm 65. The driven roller 29 is always in the retracted position shown by the solid line in FIG. 1, the crank arm 57 is moved downward by the operation of the air cylinder 55, and the driven roller 29 is rotated from the retracted position to the position shown by the chain line. The air cylinder 55 is operated when the drive motor 31 is switched from the forward rotation operation to the reverse rotation operation.

As shown in FIG. 1, the gears 63, 64 and the suspension bracket 3
5, a shaft 66 is rotatably supported in parallel with the shafts 56 and 62, a drive roller 67 is fixed to the central portion of the coaxial 66, and a gear 68 is provided at the front end. It is fastened. As shown in FIG. 3, a motor 69 is disposed slightly in front of and above the gear 68, and the drive gear 69a and the gear 68 mesh with each other. The motor 69 is operated based on the weft insertion error detection signal, and the drive roller 67 is thereby rotated in the direction of the arrow shown in FIG. Then, the driven roller 29 is brought into pressure contact with the driving roller 67 by the operation of the air cylinder 55, and is rotated together with the driving roller 67.

As shown in FIG. 1, a support piece 70 is fixed to the right side surface of the suspension bracket 35, and a suction pipe 71 connected to a suction device (not shown) is vertically supported by the support piece 70. ing. The suction port 71 a of the pipe 71 is arranged on the lower surface side of the drive roller 67. The suction device is operated based on the weft insertion error detection signal.

Next, the weft separating device 34 will be described. As shown in FIG. 1, a bifurcating suspension bracket 72 is fastened and fixed to the front surface of the support rail 27. A frame 34a is fastened and fixed to the upper surface,
The drive shaft 30 rotatably passes through both side walls of the frame 34a. The mechanism in the frame 34a is almost the same as the mechanism supported by the suspension bracket 35 in the weft drawing device 33, and the rotational drive of the drive shaft 30 is performed by the coaxial 30.
It is transmitted to a shaft 75 rotatably installed between the forked ends of the suspension bracket 72 via a gear 74 fixed to the gear 73 and a gear 74 meshed with the gear 73. The gear ratio of the gear 74 to the gear 73 is set to be larger than the gear ratio 1 of the gear 38 to the gear 37 in the weft drawing device 33. A bifurcated arm 76 is rotatably supported by the coaxial shaft 75, and a shaft 77 is rotatably supported between tip ends of arm pieces 76a and 76b of the arm 76. A balance weight 78, which is similar to the balance weight 42 on the side of the weft drawing device 33, is fixed to the connecting base end of the bifurcated arm 76. Also on the weft separating device 34 side, the balance weight 78 is brought into contact with a pair of stoppers (not shown) so that the range of rotation of the bifurcated arm 76 is restricted. Timing pulleys 79 and 80 are fixed to the shafts 75 and 77 between the arm pieces 76a and 76b, and a timing belt 81 is hung between the pulleys 79 and 80. A nut 82 is screwed onto the left end of the shaft 77, and a pressing spring 83 is interposed between the nut 82 and the arm piece 76b. Therefore, the entire shaft 77 is urged to the left, and the brake lining 85 fixed to the clutch base 84 on the arm piece 76a side and the clutch base 86 on the shaft 77 side.
The brake lining 87, which is fixed to, is pressed.
An arm 88 is fixed to the right end of the shaft 77 so as to be orthogonal to the shaft 77, and a wide leaf spring 8 is attached to the tip of the arm 88.
9 is fixed, and a plurality of notches 89a (five in this embodiment) are formed on the tip side of the spring 89. Then, the weft separating members 90 are respectively fixed to the tips of the plurality of spring pieces 89b (six pieces in this embodiment) divided by the notches 89a.

In the present embodiment, when a weft insertion error occurs, the miss yarn processing is automatically performed based on the miss yarn processing program. Therefore, the operation of the miss yarn processing when a weft insertion error occurs will be described below.

When a weft insertion error occurs, the miss yarn Y is woven into the cloth fell W1 of the woven fabric W as described above, and based on the weft insertion error detection signal, the miss yarn Y is continuously inserted for weft insertion during the machine inertia operation. The weft insertion of the weft that is about to be ejected from the main nozzle 21 is blocked on the side of the weft measuring and storing device. After the machine stand is stopped, the machine stand is automatically reversed about once and a half times, and the reed 23 is stopped at the last retracted position shown in FIG. With the reverse rotation of the machine base, the wefts T1 and T2 reach the maximum open state shown in FIG. Therefore, the gripped state of the miss yarn Y by the warp yarns T1, T2, that is, the weaved state is released.

Based on the weft insertion error detection signal, the drive motor 31 is rotated in the normal direction after the machine base is rotated in the reverse direction.
It is rotated in the direction indicated by arrow P in the figure. The rotation of the drive shaft 30 causes the gears 37 and 38 in the weft drawing device 33 to rotate.
Is transmitted to the shaft 36 via the gears 73 and 74 in the weft separating device 34.

As shown in FIG. 3, on the weft drawing device 33 side, the shaft 36 is rotated in the direction of the arrow Q shown in the same figure, and this rotation is transmitted to the shaft 41 via the timing belt 44, and the coaxial shaft 41 and the shaft 36 are the same. Is rotated in the direction. In this case, the bifurcated arm 39 side and the shaft 41 side are provided with the brake linings 46,
Since it is pressure-contacted via 48, the bifurcated arm 3
A friction torque corresponding to the acting force of the pressing spring 50 exists between the shaft 9 and the shaft 41, and relative rotation does not occur between them. Therefore, the bifurcated arm 39 and the shaft 41 are integrated with each other and rotate about the shaft 36 in the clockwise direction from the state shown in FIG. As the bifurcated arm 39 and the shaft 41 rotate, the tip of the weft drawing member 53 slides on the woven fabric W along the weft separating path indicated by C1 in the figure as shown by the chain line in FIG. While moving to the cloth fell W1 side. Then, as shown in FIG. 9, when the front end of the weft drawing member 53 reaches the cloth fell W1, the front end of the weft drawing member 53 engages with the miss yarn Y, and the miss yarn Y near the weft drawing device 33 warps. As shown in FIG. 10, it is separated from the woven fabric W by the weft drawing member 53 which enters the warp opening from the outside.

On the other hand, on the weft separating device 34 side, the shaft 75 is
6 is rotated in the same direction as the arrow R shown in FIG. 7, and this rotation is transmitted to the shaft 77 via the timing belt 81, and the coaxial 77 is rotated in the same direction as the shaft 75. In this case, similar to the side of the weft drawing device 33, the bifurcated arm 76
Side and the shaft 77 side are press-contacted to each other via the brake linings 85 and 87, so that the bifurcated arm 76 and the shaft 77 are connected.
There is a friction torque corresponding to the acting force of the pressing spring 83 between and, and no relative rotation occurs between them. Therefore, the bifurcated arm 76 and the shaft 77 are integrated to form the shaft 7.
It rotates in the clockwise direction from the state shown in FIG. In this case, the gear 3 on the weft drawing device 33 side
The ratio of the number of teeth between 7, 38 and the gear 7 on the weft separating device 34 side
Since the ratio of the number of teeth between 3,74 is set differently,
The weft drawing member 53 on the weft drawing device 33 side is the fourth
When the weft separating member 90 is rotated to the position shown by the solid line in the figure, the weft separating member 90 only reaches the vicinity of the woven fabric W as shown by the chain line in FIG.

Weft drawing member 53 on the weft drawing device 33 side
4 reaches the position shown by the solid line in FIG. 4, the balance weight 42 comes into contact with the first stopper (not shown), and the rotation of the bifurcated arm 39 is blocked. Therefore, the arm 39 stops at the position indicated by the solid line in FIG. 4, but the rotational force of the shaft 41 by the drive motor 31 overcomes the friction torque between the bifurcated arm 39 side and the shaft 41 side, and the shaft 41 moves. It rotates relative to the bifurcated arm 39. As a result, the tenth
As shown in the drawing, when the weft drawing member 53 holds the miss yarn Y in engagement, the weft drawing member 53 moves from the chain line position shown in FIG. 5 to the weft drawing path C shown in FIG.
2 is rotated clockwise about the shaft 41, and the weft drawing member 53 is arranged to be rotated to the solid line position outside the warp shed shown in FIG. That is, a part of the miss yarn Y held and held by the weft drawing member 53 is pulled out from the inside of the warp opening to the outside of the warp opening, and the driving roller 67 and the driven roller 2
It is arranged so as to be pulled out between 9 and.

At this point, on the side of the weft separating device 34, as shown in FIG. 8, the weft separating member 90 has entered along the weft separating path D from the outside of the warp opening into the warp opening while rubbing the cloth fell W1. A part of the miss yarn Y1 near the device 34 is separated from the cloth fell W1 into the warp shed.

When the miss yarn Y is pulled out and arranged between the drive roller 67 and the driven roller 29, the drive motor 31 is stopped and the reverse rotation operation is performed. At this time, the air cylinder 55 is operated and the driven roller 29 is indicated by a solid line in FIG. It is rotated from the retracted position shown to a chain line position where it abuts on the drive roller 67. Therefore, the miss yarn Y that has been pulled out between the rollers 67 and 29 is caught by the driven roller 29 and
9 and the driving roller 67 are held in pressure contact with each other. At this time, the motor 69 is operated based on the weft insertion error detection signal, and the drive roller 67 is rotating in the arrow direction shown in FIG. As a result, the miss yarn Y held between the rollers 67 and 29 under pressure is sucked into the suction port 71 of the suction pipe 71.
You will be guided to the a side. In this state, as shown in FIG. 6, the screw 5 screwed onto the drive rod 55a of the air cylinder 55.
The head of 9 is separated from the connecting shaft 58, and the driven roller 2
9 is pressed against the drive roller 67 by the action of the pressing spring 61. This pressure contact force can be appropriately changed by adjusting the screwing position of the nut 60. Miss thread Y is both rollers 67,2
The suction device (not shown) connected to the suction pipe 71 is in operation at the time of being pressed and held between the rollers 9 and 9.
The miss yarn Y guided from between 7 and 29 to the suction port 71a side is sucked and introduced into the suction pipe 71 as shown in FIG. Therefore, the weft drawing device 33 and the weft separating device 3
The miss yarn Y separated from the cloth fell W1 into the warp shed by 4 is sequentially drawn out from the inside of the warp shed to the outside of the warp shed by the cooperation of the rotation withdrawing action of both rollers 67 and 29 and the suction action of the suction pipe 71. Then, it is sucked and removed into the suction pipe 71.

The weft drawing device 33 is operated by the reverse rotation of the drive motor 31.
On the side, while the weft drawing member 53 is rotationally arranged outside the warp opening, the drawing member 53 and the bifurcated arm 39 are integrally rotated in the counterclockwise direction about the shaft 36, The weft drawing member 53 is moved along the return path C3 shown in FIG. When the weft drawing member 53 reaches the position shown by the solid line in FIG. 6, the balance weight 4
2 comes into contact with the second stopper (not shown), and the rotation of the bifurcated arm 39 is stopped. After that, the weft pull-out member 53 side is brake linings 46, 48 as described above.
It overcomes the friction torque between them and rotates with respect to the forked arm 39, and returns to the retracted position shown in FIG. 3 along the return path C4 shown in FIG.

On the other hand, on the weft separating device 34 side, as shown in FIG. 8, the weft separating member 90 entering the warp opening is integrated with the bifurcated arm 76 along the weft separating path D from the warp opening to the warp opening. The weft drawing device 3 is arranged so as to be rotated outside the opening.
When the weft drawing member 53 on the 3 side returns to the retracted position, it returns to the retracted position shown in FIG.

When the weft drawing member 53 and the weft separating member 90 return to the retracted position, the drive motor 31 is stopped and the miss yarn Y
When all are sucked and removed into the suction pipe 71, the operation of the motor 69 and the suction device connected to the suction pipe 71 are stopped, respectively, and the drive rod 55a of the air cylinder 55 returns to the original position.

After that, the machine base is automatically reversed by a predetermined amount, stopped at the rotation position most suitable for restarting, and the operation of the loom is restarted.

As described above, in the present embodiment, since the weft pull-out member 53 for separating the miss yarn Y and pulling it out and the weft separating member 90 for only separating the miss yarn Y are separately arranged at the predetermined positions in the weaving width direction, The weft drawing member 53 and the weft separating member are provided so as to be able to cope with the extremely delicate miss yarn separating action which has been a problem in the conventional device which moves the weft processing device in the width direction and separates and draws out the wrong yarn at a predetermined position. The 90 separating action paths (that is, C1 and D) can be set appropriately. That is, the configuration in which the weft separating device and the weft drawing device are installed in advance at predetermined positions can deal with an extremely delicate operation required for separating one miss yarn from the woven fabric, and the miss yarn separation can be reliably performed. Done. Moreover, the weft separating member 90, which performs only the weft separating action, is returned from the inside of the warp opening to the outside of the warp opening along the weft separating path D except at a position other than the position where the weft drawing device 33 is installed. A situation in which the missed yarn Y is caught and pulled out of the warp opening is avoided, and the missed yarn Y is pulled out from a plurality of positions.
The problem of warp damage due to cutting of the yarn or increase of the withdrawal resistance from the original withdrawal position is solved. or,
The miss yarn Y separated from the woven fabric W into the warp yarn opening is pulled out from the warp yarn opening to the outside of the warp yarn opening along the pulling path C2 of the weft drawing member 53. Compared with the method of gripping the yarn, the delivery of the missed yarn Y and the setting of the timing of gripping are extremely easy, and the removal of the missed yarn is ensured. Moreover, the member inserted into the warp opening is a member that performs weft separating action,
That is, since only the weft separating member and the weft drawing member are used, the warps are hardly damaged.

Further, in both the weft drawing device 33 and the weft separating device 34, the presence of the balance weights 42 and 78 allows the bifurcated arms 39 and 76 to rotate smoothly, and is shown in, for example, FIGS. Bifurcated arm 3
Even when 9, 78 are arranged in a horizontal state, the turning moment exceeds the frictional force between the brake linings 46, 48 and 85, 87, and the weft drawing member 5
3 and the weft separating member 90 do not rotate.

The present invention is of course not limited to the above-mentioned embodiment, but the embodiment shown in FIG. 12 is also possible. In this embodiment, both long and short drive shafts 91 and 92 are used,
The short drive shaft 92 is rotatably supported by a pair of suspension brackets 28 on the weft insertion main nozzle 21 side,
Drive motor 31A mounted and supported on the support bracket 26
Is operatively connected to. The rotational driving force of the drive shaft 92 is transmitted only to the side of the weft drawing device 33, so that the weft drawing member 53 performs the miss yarn separating and drawing actions. On the other hand, the long drive shaft 91 is operatively connected to the drive motor 31 mounted and supported on the support bracket 25 side as in the above embodiment, and the rotational drive force of the coaxial 91 is transmitted only to the plurality of weft separating devices 33 side. The miss yarn separating action of the weft separating member 90 is performed. That is, in the above-mentioned embodiment, the two-forked arms 39 and 76 are selected based on the difference between the gear ratio between the gears 37 and 38 and the gear ratio between the gears 73 and 74 between the gears 73 and 74. By setting the weft separating path C1, the weft drawing path C2, and the return paths C3, C4 as the movement paths of the weft drawing member 53 by making the amount of rotation between them different, both the miss thread separation and the drawing operation are performed. ,
Although the weft separation path D is set as the movement path of the weft separation member 90 and only the miss thread separation is performed, in this embodiment, there is a difference between the rotation amount of the drive motor 31 and the rotation amount of the drive motor 31A. In addition, the weft separating and pulling-out operations similar to the above are performed. According to this embodiment, both drive motors 3
By adjusting the rotation amounts of 1 and 31A respectively, it is possible to easily set the optimum timing of the miss yarn separating and pulling action on the weft yarn drawing device 33 side and the miss yarn separating action on the weft yarn separating device 34 side.

In the above embodiment, the weft separating device 34 side avoids the contact between the balance weight 78 and the stopper to prevent the weft separating member 90 from rotating with respect to the bifurcated arm 76. After adjusting, the balance weight 78 is brought into contact with the stopper, and the weft separating member 9
You may set so that 0 may be rotated suitably. In this case, the weft separating member 90 is returned from the inside of the warp opening to the outside of the warp opening substantially along the weft separating path, but the balance weight 78 is brought into contact with another stopper so that the weft separating member 90 has the same rotation amount. It is necessary to reverse by the amount.

Further, the present invention is applicable not only to the processing of the wrong yarn but also to the case where the weft yarn inserted during the inertial operation immediately before the artificial machine stand is separated from the woven fabric is processed, or the weft yarn is pulled out by using the limit switch or the like. The movement of the member and the weft separating member is appropriately controlled, the number of the weft separating devices 34 installed is appropriately increased or decreased according to the change of the weaving width, or the weft insertion is attempted following the miss yarn during machine frame inertia operation. The present invention can be embodied in a loom that blocks weft insertion of wefts in front of the weft inserting device, and can also be applied to a shuttleless loom other than a jet loom.

EFFECTS OF THE INVENTION As described in detail above, according to the weft processing method of the present invention, the weft separation from the woven fabric and the weft drawing processing from the inside of the warp opening to the outside of the warp opening are surely performed while avoiding damage to the weft. It has an excellent effect that

[Brief description of drawings]

1 to 11 show an embodiment embodying the present invention. FIG. 1 is a front sectional view showing a weft drawing device and a weft separating device, FIG. 2 is a schematic plan view, and FIG. 3 is a weft drawing device. 4 to 6 are side sectional views of the weft separating device, FIG. 7 is a side sectional view of the weft separating device, and FIG. 8 is a weft separating action. FIG. 9 to FIG. 11 are side sectional views showing a conventional device, FIG. 12 is a schematic plan view showing another example of the present invention, and FIG. . Support rail 27, drive shafts 30, 91, 92, drive motors 31, 31A, weft drawing device 33, weft separating device 3
4, weft drawing member 53, weft separating member 90, warp T
1, T2, miss yarn Y.

Claims (1)

[Claims] 1. An open state of warps is formed to release the weaving state of the weft threads woven into the woven fabric immediately before the machine stand is stopped, and at least 1 is provided at a predetermined position in the weft width direction near the upper part of the cloth fell.
The weft separating member of the installed weft separating device is moved from its predetermined retracted position along the weft separating path that rubs the cloth to separate the weft from the cloth into the warp opening, and thereafter,
The weft separating member is moved and returned to the retracted position substantially along the weft separating path, while the weft extracting member of the weft extracting device is installed at a predetermined position different from the predetermined position near the upper part of the cloth fell. From the predetermined retracted position, the weft is moved along the weft separating path that scrapes the weft to separate and hold the weft from the cloth fell into the warp opening, and then along a path different from the weft separating path. A weft processing method in a shuttleless loom, wherein a weft drawing member is moved from inside the warp opening to outside the warp opening to pull out the weft from inside the warp opening to outside the warp opening and return to the retracted position.