JPH03124848A - Weft treating device for fluid jetting type loom - Google Patents

Abstract

PURPOSE:To draw and remove miss yarn and make it possible to automatically restart a loom by providing a cutter between warp line and yarn end-treating yarn prior to the drawing and removing of a miss yarn and cutting the miss yarn. CONSTITUTION:When a defective weft insertion occurs, a cutter 13 for cutting a miss yarn Wa provided between a warp Y line and a yarn end treating yarn S cuts the miss yarn Wa prior to the drawing and removing of the miss yarn Wa by a miss yarn drawing and removing device. For example, when a failure of weft insertion what is called empty stopping occurs, the cutter 13 cuts a part between the warp line of miss yarn Wa and the yarn end treating yarn S and weft inserting nozzle 4 side of the miss yarn Wa is drawn and removed by the miss yarn drawing and removing device.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a weft processing device for a fluid jet loom.

BACKGROUND OF THE INVENTION Among conventional weft processing devices for fluid jet looms, there is one disclosed, for example, in Japanese Patent Application Laid-open No. 1-156553. This is because when a weft insertion failure occurs as shown in Figure 12,
After stopping the weft cutting function on the weft insertion nozzle side and stopping the loom main shaft (not shown) with the weft insertion error thread connected to the weft insertion nozzle, the loom main shaft is stopped in reverse and the error yarn Wa is exposed to the weaving mP. Then, the misplaced yarn Wa is pulled and removed by a misplaced yarn pulling and removing device B disposed on the side of the weft insertion nozzle A. In the figure, E is a reed, E is a regular weft sensor, S is a plurality of yarn end treatment systems, F is a twisting device for twisting the yarn end treatment system S near the front of the weaving, and Y is a warp yarn.

Problems to be Solved by the Invention In the above-mentioned weft processing device, even though the weft inserted by the jet flow from the weft insertion nozzle A during weaving operation reaches the regular weft sensor E, the control device (not shown) If the weft insertion is determined to be defective for some reason and the loom stops, so-called empty weaving occurs, the inserted weft becomes a misplaced yarn Wa, and the flying tip of this misplaced yarn Wa becomes the yarn. Edge treatment system S
Since it is entangled in the threads, it cannot be removed even if it is pulled by the mistake thread traction and removal device B. For this reason, the removal of the misplaced yarn Wa by the misplaced yarn traction removal device B is stopped, and the operator manually removes the misplaced yarn Wa before restarting the loom.

Means for Solving the Problems Therefore, the present invention, when a weft insertion failure occurs, cuts the misplaced yarn between the warp series and the yarn end processing system before pulling and removing the misplaced yarn by the misplaced yarn traction removal device. A cutter is provided.

For example, when a weft insertion failure called blank stop occurs, the cutter cuts the part between the warp line of the incorrect yarn and the yarn end processing system, and pulls and removes the incorrect yarn from the weft insertion nozzle side. Remove by towing with a device.

Embodiment 1 First embodiment (see Figs. 1 to 8) In Figs. 1 to 4, ■ is the loom main shaft, 2 is the reed, 3 is the shedding device, 4 is the weft insertion nozzle, 5 is the weft length measuring storage device, 6 is a weft gripper, 7 is a regular weft sensor, 8 is a twisting device for yarn end processing, 9 is a regular cutter on the weft insertion nozzle side, IO is a regular cutter on the side opposite to the weft insertion nozzle, 11 is a weft sensor for error yarn processing, and I2 is a weft yarn sensor for error yarn processing. 13 is a cutter for removing erroneous yarns on the weft insertion nozzle side; 13 is a cutter for removing erroneous yarns on the opposite side of the cotton insertion nozzle; 14 is a erroneous yarn traction removal device; 15 is a weft yarn feeder; 16. 17 is a weft yarn guide; 18 is a temple parr; Temple, P is woven,
S is a yarn end treatment system, W is a weft, Wa is a missed yarn, and Y is a warp.

Here, the main shaft l of the loom is rotated in the normal direction at high speed by the normal rotation of the main motor (not shown) in response to a weaving operation signal from the control device (not shown), and the main motor is stopped in normal rotation due to the weft insertion failure stop signal from the control device. As a result of the subsequent reversal, the weaving machine is driven in reverse at a low speed and stopped at a fixed position where the warp spacing of the weaving cycle in which the weft insertion failure occurred is at its maximum. By stopping the loom main shaft I from reversing, the erroneous yarn Wa is exposed to the front P of the weaving.

The reed 2 performs a reed beating motion at a predetermined timing by a reed beating device (not shown) connected to the loom main shaft l.

The belt 3 performs shedding motion at a predetermined timing by a shedding device (not shown) connected to the loom main shaft 1.

The weft insertion nozzle 4 is provided with a weft insertion water supply path 401 since a water jet loom is used in this embodiment. The weft insertion water supply route 401 uses tap water 4 as a water source.
02 is supplied to a constant water level tank 403 so as to maintain a predetermined water level by a float valve 404, and this constant water level tank 403
A plunger-type weft insertion pump 405 sucks water through a normally open check valve 408 in the suction process of a plunger 407 by a cam 406 connected to the loom main shaft l, and the weft insertion pump 405 pumps the water into the plunger spring 4.
09, the water is supplied to the normally open on-off valve 410 side, and this water is supplied to the weft insertion nozzle 4 from the control device during weaving operation. Weft insertion pump 405 of weft insertion supply path 401
A normally closed relief valve 411 is connected between the on-off valve 410 and the on-off valve 410, which is closed in response to a weft insertion operation signal and a weft flying signal from the control device. That is, when the on-off valve 410 is open, the relief valve 411 is closed, and when the on-off valve 410 is closed, the relief valve 411 is closed.
The on-off valve 410 and the relief valve 4 are opened.
11 and the valves alternately open and close. In addition, the bottom of a sub-tank 412 is connected to the check valve 408 side of the weft insertion water supply path 401, and the top of this sub-tank 412 is always open to the atmosphere.
4 to a source of pressurized air 415.

Therefore, during weaving operation, the three-way switching valve 413 is opened to the atmosphere, and the sub-tank 412 has a constant water level tank 403.
Tap water is supplied from the constant water level tank 403, and water at the same water level as the constant water level tank 403 is stored.When the loom is stopped due to a weft insertion failure, the three-way switching valve 413 is activated by a control signal from a control device (not shown). Regulator 414 and sub tank 4
12 and driving of the air pump 415, the water stored in the sub tank 412 is pressurized and the check valve 408 is activated.
The weft insertion pump 405 is stopped and the valve is closed.
．． Water is supplied to the weft insertion nozzle 4 for a predetermined period of time through the open/closed valves 410 that are open for a predetermined period of time. This predetermined time is a necessary and sufficient time for the weft W to pass from the weft insertion nozzle 4 through the opening between the warp Y row and the yarn end treatment system S, reach the mis-thread pulling and removal device 14, and be unbraced. It is.

The weft length measurement and storage device 5 includes a drum 501. The drum 501 is connected to the loom main shaft l by a permanently connected electromagnetic clutch 50.
2 and a belt 503, the winding motor 5
05, it is rotationally driven via a normally released electromagnetic clutch 506. The weft yarn length measuring and storage device 5 is used to measure the weft yarn W that is fed out from the weft yarn supplying body 15 through the weft yarn guide 16.
The length of the weft yarn W is measured while being squeezed between the drum 501 and the pressing roller 507, while the weft W is moved to the drum by a swirling flow in the same direction as the drum rotation direction generated in the cover 508, which has a substantially annular cross section and surrounds the tip of the drum 501. The weft W fed out from the weft yarn feeder 15 by the rotation of the drum 501 is wound around the circumferential surface of the drum 501 and stored while being pressed against the peripheral edge of the distal end of the drum 501. The weft yarn W stored in this weft length measurement storage device 5 is transferred to the weft yarn guide 17. The yarn is threaded through a weft gripper 6 and into a weft insertion nozzle 4.

The weft gripper 6 holds the weft W between the upper and lower holding bodies 601 and 602.
is inserted, and during the weft insertion period, at least one of the upper and lower clamping bodies 601 and 602 is inserted into the clamping body 60! A cam 603 that rotates in conjunction with the loom main shaft I separates the weft from the other clamping body 602 to release the weft W, and a spring (not shown) separates the weft from the other clamping body 602 except during the weft insertion period.
is pressed against the other clamping body 602 to clamp the weft W.

The regular weft sensor 7 is installed between the warp Y row of the reed 2 and the yarn end treatment system S, and the weft inserting water is ejected from the weft inserting nozzle 4 to pass through the warp opening and reverse weft inserting. It is of a contact type that detects the presence or absence of the weft yarn W flying toward the nozzle 4 side. When the regular weft sensor 7 outputs a weft presence detection signal to a control device (not shown) at a time when the weft W should exist, the control device determines that weft insertion is normal and continues the weaving operation. On the contrary, if the regular weft sensor 7 outputs a no-weft detection signal to the control device at a time when the weft W should exist, the control device determines that weft insertion is defective and sends a stop signal to the main motor (not shown). Output.

A yarn end treatment system twisting device 8 twists a plurality of yarn end treatment systems S pulled out from a plurality of yarn end treatment system yarn feeders (not shown) onto a belt 3. Reed 2
The inserted wefts are sequentially passed through a through hole 802 formed at the rear of the twisting head 801, and are twisted together by the rotation of the twisting head 801. A yarn end processing system S is created in which the flying tip of the weft W is captured, and the cut ends of the opposite weft insertion nozzle are twisted together by cutting the captured weft W in the vicinity of the warp Y row with a regular cutter IO on the opposite weft insertion nozzle side. After being turned by a guide roller 803, the yarn is discharged outside the machine while being pulled by a yarn end treatment system pulling roller 804. This pulling speed is set slightly higher than the weaving speed of the woven fabric C.

Further, a bracket 805 is coupled to the twisting head 801. This bracket 805 is fitted to the temple parr 18 placed horizontally in the vicinity of the front of the woven fabric front P so as to be movable along the weaving width direction.
The position is fixed by tightening the bolt 806 that is threaded into the fitting part with the temple parr 18 of 05. The yarn end processing system S includes a twisting head 80 by a bracket 805.
Even if the weaving width of the woven fabric C is changed by both the movement in the weaving width direction and the fixing of the position, as well as the operation of changing the threading position of the belt 3 and the reed 2, the weaving width In accordance with this, the distance from the warp Y row is always set to a predetermined constant dimension.

The regular cutter 9 on the weft inserting nozzle side cuts the weft thread W continuous from the front P to the weft inserting nozzle 4 immediately after reeding in response to a cutting operation signal from a control device (not shown), while cutting the weft yarn W continuous from the weft front P to the weft inserting nozzle 4 in response to a stop signal from the control device (not shown). It is an electromagnetic drive type that stops cutting the weft W continuing from P to the weft insertion nozzle 4.

The tip of the common cutter 10 on the opposite weft insertion nozzle side is the weaving front P.
It is located at the front side of the loom, and is operated at a predetermined period, for example, once every two rotations of the loom main shaft I. The tip of this common cutter IO on the opposite weft insertion nozzle side is placed in front of the front P, so that several continuous weft yarns W remain between the woven fabric C and the yarn end treatment system S. .

Weft thread sensor 1 for handling misplaced threads! In response to a stop signal from a control device (not shown), the regular cutter 9 on the weft insertion nozzle side is activated after beating the reed.
The present invention detects the presence or absence of the weft yarn W continuing from the weaving front P to the weft insertion nozzle 4 by preventing cutting, and outputs this detection signal to the control device. In other words, this error thread processing sensor 11
outputs a weft presence detection signal to the control device, the control device determines that the mistake yarn Wa in the warp Y row and the weft W on the weft insertion nozzle 4 side are connected, and automatically performs the mistake yarn processing operation. continue. On the contrary, when the error yarn processing sensor 11 outputs a no-weft detection signal to the control device, since the error yarn Wa remains in the warp Y row in this weft yarn processing device, the controller detects the error in the warp Y row. It is determined that the yarn Wa and the weft W on the side of the weft insertion nozzle 4 are broken, and the subsequent mis-thread processing is stopped, and an alarm (not shown) is issued to alert the operator to manually remove the mis-thread. Inform about the need for removal.

During weaving operation, the weft insertion nozzle-side error yarn processing cutter 12 is stopped at a retracted position where it does not come into contact with the weft insertion nozzle 4, the weft yarn W to be inserted, the reed 2, the belt 3, etc., and this causes weft insertion errors. The inside is moved from the above-mentioned retracted position to the operating position in response to a cutting operation signal output from the control device after a predetermined time delay from generation of the weft insertion failure stop signal, and performs a scissor cutting operation to remove the tip of the weft insertion nozzle 4 of the weft W. It is an electromagnetic drive type that returns from the operating position to the retracted position after cutting. The above-mentioned predetermined time delay means that the water jetted from the weft insertion nozzle 4 moves the weft yarn W connected to the miss yarn Wa in the warp Y row from the weft insertion nozzle 4 through the warp opening toward the anti-cotton insertion nozzle 4 side. The receiver is passed to the mis-thread pulling and removing device 14, which pulls and removes the mis-thread Wa connected to the weft W from the warp Y row, and then removes the weft W.
This is the necessary and sufficient time for the weft inserting nozzle 4 to be stretched in a substantially straight line between the weft insertion nozzle 4 and the miss-type traction removal device I4.

The cutter I3 for removing the wrong yarn on the side opposite to the weft insertion nozzle is used to remove the wrong yarn Wa.
This cutter cuts misplaced yarns Wa between the warp Y row and the yarn end treatment system S before pulling and removing the yarn. The loom is stopped at the retracted position shown in the solid line in Figure 1, where it does not come into contact with the weft W, and when the loom is stopped due to a weft insertion failure, the cutting operation is output from the control device with a predetermined time delay from the generation of the stop signal. In response to a signal, the machine moves from the above retracted position to the virtual water mixing cutting position shown in Fig. 1 to cut the portion of the weft W between the warp Y row and the yarn end treatment system S, and then returns from the operating position to the retracted position. It is electromagnetically driven. Specifically, the anti-cotton insertion nozzle side mis-thread processing cutter 13 is like a commercially available cutter knife, and has a blade 1302 formed on one long edge of a strip-shaped cutter body ■301. Turn the cutter body 1 toward the weft insertion nozzle.
30I is coupled to the armature 1304 of an electromagnetically driven actuator 1303, and this actuator 13
03 is attached to a temple bracket 1801 attached to the temple par 18. As a result, the processing cutter 13 on the opposite weft insertion nozzle side is attached to the temple bracket 180.
The position of the weaving cloth is fixed so as to be movable along the weaving width direction by the lateral movement means constituted by 1. In addition, the above-mentioned predetermined time delay means that the weft yarn W connected to the miss yarn Wa in the warp Y row flies from the weft insertion nozzle 4 through the opening between the warp yarn Y and the yarn end processing system due to the water jetted from the weft insertion nozzle 4. This is the time until the receiver is passed to the error yarn traction removal device I4.

In this embodiment, the mis-thread pulling and removing device I4 removes the mis-thread W.
Since the structure uses a structure that pulls and removes a to the side opposite to the weft insertion nozzle 4, when a weft insertion failure occurs and the loom main shaft I stops, the jet flow from the weft insertion nozzle 4 will remove the inside of the warp thread opening. The receiver picks up and pulls and removes the missed yarns Wa in the warp yarn Y row and the weft yarns W connected thereto, which fly toward the anti-cotton insertion nozzle 4 side via the yarn end treatment system S. It is a suction type that is attached to the loom frame side on the opposite weft insertion nozzle 4 side. Specifically, the mis-thread pulling and removing device 14 includes an ejector nozzle 1401 as shown in FIG.
And this ejector nozzle! 401 suction port part 1401
A and a suction mouse 1402 coaxially fitted on the outside. An ejector jW I 403 is provided at an internal intermediate portion of the ejector nozzle 1401, and an inlet 1403a of this ejector portion 1403 is connected to a mis-yarn treatment fluid supply path 1404. Mis-thread processing fluid is supplied from this mis-thread processing fluid path 1404 to the ejector section 1403, and the mis-thread processing fluid is transferred to the ejector section 1403.
403 toward the opposite side of the suction mouth I402, a suction force is generated at the tapered large diameter mouth 1402a of the suction mouth 1402, and this suction force separates the missed yarn Wa and the weft yarn W. While the receiver is removed and pulled away, a discharge pipe 1405 such as a vinyl tube is connected to the downstream side of the ejector nozzle I401 for the missed thread fluid, as shown in FIG. A filter I406 is connected to the side, and this filter 1406 is connected to the weft yarn W in which the miss yarn Wa is connected.
At the same time, the mis-thread processing fluid for suctioning the weft W is injected from the weft inserting nozzle 4 to remove the weft W.
The mixed fluid with the water that has flown through the water is drained into the drainage channel 1407. Furthermore, since pressurized air is used as the mistake yarn processing fluid in this embodiment, the mistake system processing fluid supply path 1404 is an air supply path 416 that connects the air pump 415 and regulator 414 described above. It is connected to the. This mistake thread processing fluid supply path 1404
A variable type squeezer 1407 and a normally closed on-off valve 1408 that opens in response to a weft insertion failure stop signal from a control device are interposed. Therefore, when the on-off valve 14o8 is opened, pressurized air constituting the error system processing fluid is supplied from the air pump 415 to the error yarn traction removal device I4. Also,
The mis-thread pulling and removing device 14 is provided with a lateral movement means 1420 and a position switching means 1430. Specifically, the lateral movement means 1420 fixes the miss-type traction removal device 14 in a movable position along the weaving width direction, and is a base member! Equipped with 42I. This base member 1421 is fitted to a portion of the temple parr 18 on the side opposite to the weft inserting nozzle 4 from the bracket 805 of the yarn end treatment system twisting device 8, and is movable along the weaving width direction. The position is fixed by tightening a bolt 1422 that is threaded into the fitting portion of 1421 with the temple parr 18.

The position switching means I430 moves the mis-thread pulling and removing device 14 to a retracted position where it does not come into contact with the reed 2 during weaving operation, and a mis-thread Wa
When the weft W connected to the weft W is pulled and removed, the weft receiver moves to the take-up position. A fluid rotation driven actuator 1431 called a cylinder is provided.

Rotation shaft 1 as the output shaft of this actuator 1431
An arm 1433 is detachably fastened to the tip of the arm 432 with a screw 1434. The extending end of the arm 1433 extending radially outward from the rotation shaft 1432 is bent at a predetermined angle θ toward the side opposite to the weft insertion nozzle 4, and the ejector of the mis-thread pulling and removing device I4 is attached to the bent end. Nozzle 140I is coupled. Therefore, when the rotation axis 1432 of the actuator 143I is arranged substantially parallel to the weaving width direction, the weft receiver is moved by the bending angle θ to the ejector nozzle 1401 and the suction mouth I402 that constitute the hole axis of the mis-thread pulling and removing device 14 at the take-up position. While the axis L3 intersects the weft flying path L4 at the predetermined angle θ in plan view, the reciprocating rotational movement of the rotation shaft 1432 of the actuator 1431 causes the error yarn traction removal device 14 to move as shown in FIG. The weft receiver is moved and stopped at the retracted position shown by the imaginary line and at the take-up position shown by the solid line.

In other words, the rotation axis 1432 of the actuator 143I is
A weaving operation signal from a control device (not shown) drives the mis-thread yarn traction and removal device 14 to move to the retracted position and stop it, and a stop signal from the control device moves the mis-thread yarn traction and removal device 14 to the weft-receiving position. Move and stop. Furthermore, as shown in FIG. 1, a passage 1435 communicating with the inlet 1403a of the ejector nozzle 1401 is formed inside the arm 1433, and a hose opening 1436 communicating with this passage 1435 is attached to the rotation axis 4 of the arm 1433.
A protrusion is formed on the side near 32.

A piping member such as a vinyl tube, which constitutes the most downstream portion of the mis-thread processing fluid supply path 1404, is connected to this hose port 1436.

On the other hand, as shown in Figure 3.4, the suction mouse I40
The weft receiver of the communication part between the tapered mouth part 1402a of No. 2 and the cylindrical drawing hole part 1402b connected thereto has a substantially V-shaped thread catching groove 1410 in the weave 6iP side part at the take-up position.
is formed in the direction along the flight path L4 of the weft W.

A reflective weft sensor 141 is installed on the peripheral wall of the suction mouth 1402 for 71,134 ft in this yarn catching groove 1410.
1 is installed. Specifically, the weft sensor 1411
The cover 1412 that covers the tip of the mouse 1
402 , and a nut 141 is screwed onto the portion of the cover 1412 exposed to the outside of the mouth 1402 .
3 has been concluded. Due to the amount of screwing of this cover 1412 into the suction mouth 1402 and the double nut hooking by the nut 14!3, the irradiation surface and the reflective light receiving surface of the weft yarn sensor 1411 are directed outward of the suction mouth 1402 from the bottom surface of the yarn catching groove 141O. The position is adjusted so as to be slightly retracted, and the weft yarn W connected to the missed yarn Wa caught in the yarn catching groove 1410 is set and arranged so as not to come into contact with the weft yarn sensor 1411. In addition, weft sensor 1411
The amount of light received is such that its amplification factor can be varied on the side of a photoelectric conversion amplifier (not shown) connected to the weft sensor 1411.

Also, the tapered mouth rNs of suction mouse 1402
A plurality of through holes I41 are provided in the peripheral wall defining +402a.
5 is formed. The plurality of through holes 1415 communicate the opening 1402a to the outside in a direction perpendicular to the axis L3 of the suction mouth 1402, and the weft insertion nozzle 4 injects water into the tapered opening 1402a of the suction mouth 1402. Immediately suction a portion of the water that has flown through the weft W connected to the miss yarn Wa! 402 to ensure thread removal.

The temple parr 18 is installed across the upper part of the loom frame in the weaving width direction. A temple 19 is attached to a temple bracket 1801 attached to the temple par 18 so as to be movable and fixed at one position along the weaving width direction, and the woven fabric C is woven in the weaving width direction by this temple z9 and the temple par 18. The fabric C is stretched to prevent shrinkage.

According to the above embodiment structure, in the weaving preparation work,
Adjust the temple bracket 1801 to warp Y according to the weaving width.
The yarn end treatment system S is placed on the opposite weft inserting nozzle 4 side of the row, and the yarn end treatment system S is placed on the side opposite to the weft insertion nozzle 4 while adjusting the position of the yarn end treatment system twisting device 8.
is set at a predetermined constant distance away from the opposite weft insertion nozzle 4 side, and at the same time, by operating the bolt 1422 of the lateral moving means 1420, the error yarn traction removal device 14 is fixedly moved from the yarn end processing system S to the opposite weft insertion nozzle 4 side. Fixed at a distance.

After this preparatory work is completed, the operator operates a start switch (not shown) to start the weaving operation. Then, while the anti-cotton insertion nozzle-side mis-thread processing cutter 12, the weft-insertion nozzle-side mis-thread processing cutter 13, and the mis-thread removal device 14 are held in the retracted position, the loom main shaft l is driven in the normal rotation.
The opening movement of the belt 3 at a predetermined timing, the insertion movement of the weft by the injection of weft insertion water from the weft insertion nozzle 4, the length measurement storage operation of the weft length measuring and storage device 5, and the gripping and releasing operation of the weft yarn gripper 6. By the beating movement of the reed 2, the cutting operation of the weft insertion nozzle side regular cutter 9, the cutting operation of the non-weft insertion nozzle side regular cutter 10, the twisting operation of the yarn end processing system twisting device 8, etc. The interlacing of the warp yarns Y and the weft yarns W is completed, and a woven fabric C is woven.

During this weaving operation, even though the weft W has reached the regular weft sensor 7, the control device determines that a weft insertion failure has occurred for some reason and the loom stops. The operation in this case will be explained with reference to the flowchart shown in FIG. 5 and the action diagram shown in FIG. 6.

At a time when the inserted weft W is supposed to reach the regular sensor 7 during the weaving operation, the regular sensor 7 determines whether or not there is a weft, as shown in step 101 in FIG. That is, when the regular sensor 7 detects the presence of weft yarns, the control device determines that normal weft insertion is being performed and continues the weaving operation. On the contrary, if the regular sensor 7 detects that there is no weft, the control device determines that the weft insertion is defective. However, in this example, since it is a case of idle stop,
For some reason unexpected from the relationship between the regular weft sensor 7 and the control device, the control device is unable to perform step 1 in FIG.
Assuming that it is determined that weft insertion is defective in step 01, the following operations are performed in sequence according to this determination.

First, as shown in step 102 of FIG. 5 and FIG. 6(A), the loom main shaft l is stopped immediately before beating of the next weaving cycle after the weaving cycle in which the defective weft insertion occurred, and
The cutting operation of the regular cutter 9 on the weft insertion nozzle side is stopped.

Next, as shown in step 103 in FIG. 5 and FIG. 6(B), the electromagnetic clutch 502 is released and the weft length measuring storage device 5
After the weft is separated from the loom main shaft 1, the electromagnetic clutch 506 is connected, and the winding motor 505 is rotated to store more than two blocks of weft W in the drum 501. In parallel with this, the main shaft 1 of the loom is reversely rotated at low speed by a main motor (not shown), and is stopped at a fixed position where the warp opening is maximized in the weaving cycle in which the defective weft insertion occurs. As a result, the missed yarn Wa as a weft immediately after beating, whose flying tip was captured by the yarn end processing system S after passing over the regular weft sensor 7, is transferred to the weft front P.
At the same time, the weft gripper 6 becomes open.

Here, as shown in step 104 in FIG. 5, the weft yarn sensor 11 for processing a misplaced yarn determines whether or not there is a weft yarn. In other words, when the error yarn processing sensor 11 detects no weft yarn,
The control device determines that the misplaced yarn Wa has broken with the weft yarn W on the weft insertion nozzle 4 side, and issues an alarm to inform the operator of the disconnection of the misplaced yarn Wa and the weft yarn W, as shown in step 105 in FIG. is issued, and further processing is canceled.

On the contrary, when the weft sensor 11 for mis-thread processing detects the presence of a weft, the control device determines that the mis-thread Wa is connected to the weft W on the weft insertion nozzle 4 side, and steps As shown in 106, the error yarn traction and removal device 14 is moved from the retracted position to the weft take-up position, and stopped.
The opening/closing valve 1408 is opened to generate a suction force in the mis-thread pulling and removing device 14, while the mis-thread processing cutter 13 on the side opposite to the weft insertion nozzle is moved from the retracted position to the cutting position and stopped.

In parallel with this, the three-way switching valve 413 is switched to the pressure air source 415, the on-off valve 410 is opened, and the relief valve 411 is closed. As a result, step + in Figure 5
07 and FIG. 6(C), the water stored in the sub-tank 412 is injected from the weft inserting nozzle 4 for a predetermined period of time until the weft W reaches the mis-thread pulling and removing device 14 and is removed. Due to this jet flow, more than 2 big worth of weft W stored in the weft length measuring storage device 5 is removed from the warp Y and the yarn end processing system S.
It flies inside the opening in a substantially U-shape and is sucked into the mistake thread traction and removal device I4 while being passed over and pulled.

Here, as shown in step 10H in FIG. 5, the weft sensor 1411 in the error yarn traction and removal device (4) determines whether or not there is a weft. In other words, when the weft sensor 1411 detects that there is no weft, the control device determines that the error yarn traction and removal device I4 was unable to pick up the weft W that flew due to the jet flow of the weft insertion nozzle 4, and As shown in step 109 in FIG. 5, the mis-thread pulling and removing device 14 and the mis-thread processing cutter 13 on the side opposite to the weft insertion nozzle are returned to the retracted position. At the same time, as shown in step 110 in FIG. 5, the error yarn traction and removal device 14 issues an alarm to notify the operator that the weft W could not be picked up, and stops the subsequent processing. do.

On the contrary, when the weft sensor 14!1 detects the presence of a weft, the control device prevents the error yarn traction and removal device 14 from receiving and removing the flying weft W by the jet H of the weft insertion nozzle 4. It is determined that the weft yarn W has been processed, and the operation of processing the weft yarn W is continued. In other words, when the weft W flies through the opening between the warp Y and the yarn end treatment system W3 due to the jet flow from the weft insertion nozzle 4, and is sucked into the error yarn traction and removal device 14, the receiver is removed and the weft yarn is pulled. Due to the traction action, the folded portion a of the miss yarn Wa is peeled off from the front P and removed.

During this process of removal, as shown in FIG. 4, the folded part comes into contact with the blade +302 of the cutter I3 for removing mis-threads on the side opposite to the weft insertion nozzle, which is stopped at the cutting position. The miss yarn Wa is cut and removed by the impact.

This cutter 13 for removing the wrong yarn on the side opposite to the weft insertion nozzle returns from the cutting position to the retracted position after coming into contact with the wrong yarn Wa.

In other words, even if the misplaced yarn Wa is not cut due to the above contact, the misplaced yarn Wa is stretched between the misplaced yarn traction and removal device 14 and the yarn end processing system S, and the blade 1302 of the anti-weft insertion nozzle misplaced yarn processing cutter 13 Since the miss yarn processing cutter 13 on the side opposite to the weft insertion nozzle returns while being in contact with the weft insertion nozzle, the miss yarn Wa can be reliably cut.

When this traction removal is completed, the weft yarn W is stretched straight between the weft insertion nozzle 4 and the misplaced yarn traction removal device 14, as shown in FIG. The side cut end Wa1 is left in the yarn end treatment system S.

Then, when the time has elapsed since the start of water injection from the weft insertion nozzle 4 and the time during which the weft yarn W would have been straightened and immediately stretched between the weft insertion nozzle 4 and the mis-thread pulling and removal device 14, the second Step 5: As shown in step 11, the weft insertion nozzle-side mis-thread processing cutter 12 is moved from the retracted position to the cutting position while performing a cutting operation to cut the weft W.

In parallel with this, it is determined several times, for example four times, whether or not the misplaced yarn Wa has been removed based on the presence or absence of the weft yarn detected by the weft yarn sensor 1411 of the misplaced yarn traction removal device 14.

In other words, while the misplaced yarn Wa is not removed from the warp Y row by the pulling/removal operation of the misplaced yarn pulling/removing device 14, a part of the misplaced yarn Wa and a part of the weft yarn W connected thereto, as shown in FIG. Thread catching groove 141 of mist thread traction removal device ■4
It's in 0. Therefore, step 112 of FIG.
In the first judgment operation shown in , the weft sensor 141
1 detects that there is no weft yarn, the control device assumes that the erroneous yarn Wa has been removed from the warp yarn Y row, and executes step 1 in FIG.
If the weft sensor 1411 detects the presence of a weft, on the other hand, the error yarn traction removal device 14 continues pulling as shown in step 113 in FIG. The weft W is cut again using the yarn processing cutter I2.

Then, after a predetermined period of time has elapsed, a second determination operation shown in step 114 in FIG. 5 is performed. This second
In the first judgment operation, if the weft sensor 1411 detects that there is no weft, the process proceeds to step 120; on the other hand, if the weft sensor 1411 detects that there is a weft, the process proceeds to step 115 in FIG. The traction of the error yarn traction removal device 14 is continued as shown.

Thereafter, after a predetermined period of time has elapsed, the third determination operation shown in step 116 in FIG. 5 is performed. This third
In the second judgment operation, if the weft sensor 1411 detects that there is no weft, the process proceeds to step 120. Conversely, if the weft sensor 141■ detects that there is a weft, the process proceeds to step 117 in FIG. Then, the mis-thread pulling and removing device 14 swings back and forth once from the weft receiving position to the retracted position to the persimmon thread receiving position, and the mis-thread processing cutter 13 on the side opposite to the weft insertion nozzle returns from the cutting position to the retracted position. do.

When the last predetermined time has elapsed, step 118 in FIG.
The fourth judgment operation is performed as shown in FIG.

Also in this fourth judgment operation, the weft sensor 141
! If it is detected that there is a weft yarn, the control device determines that it is impossible to automatically pull and remove the misplaced yarn Wa even if the process continues any further, and performs the following steps as shown in step 119 in FIG. While returning the missed yarn pulling and removal device 14 from the weft receiving position to the retracted position, an alarm is issued to inform the operator that the missed yarn Wa cannot be automatically pulled and removed, and further processing is stopped. .

Now, in one of the several determination operations described above, the weft sensor 1411 detects the absence of a weft, and the control device detects the missing yarn W.
If it is determined that the weft thread a has been removed, as shown in FIG.
The weft yarn W stretched straight between the weft thread pulling and removing device I4 is also cut by the weft insertion nozzle-side mis-thread processing cutter 12, and the mis-thread is removed from the opening between the warp Y row and the yarn end processing system S. Since it has been removed by the pulling and removing device I4, the mistaken yarn pulling and removing device I4 is returned from the weft receiving position to the retracted position as shown in step 120 in FIG.

Thereafter, as shown in step 121 in FIG. 5, the control device locates the start position of the loom main shaft 1, outputs a restart signal, rotates the main motor (not shown) in the normal direction, and starts the loom main shaft 1. After driving in normal rotation and performing dry reed beating several times, weft insertion is performed at a predetermined timing and weaving operation is restarted.

As a result, one cycle of the weft processing operation from the occurrence of a weft insertion failure to the removal of the erroneous yarn Wa is completed.

Note that steps 105, 110° 119 in FIG. 5 mentioned above
The fact that the process was aborted means that automatic restart of the loom is prohibited. therefore,
In this case, after the worker manually removes the misplaced thread Wa,
Operate the start switch (not shown) to restart the weaving operation.

On the other hand, an operation in which a weft insertion failure occurs in which the weft W does not reach the regular weft sensor 7 during the weaving operation will be described with reference to FIG. 7, in addition to the above.

First, as shown in FIG. 7 (Δ), the loom main shaft 1 stops just before beating, and the cutting operation of the weft insertion nozzle side regular cutter 9 is stopped, and then as shown in FIG. 7 (B), The main shaft I of the loom rotates in reverse, causing defective weft insertion, and stops at a fixed position where the warp shedding is at its maximum in the weaving cycle. As a result, the missed yarn Wa is exposed on the front P, and the weft yarn gripper 6 is opened, and in parallel with this, the weft yarn W for more than two picks is stored in the weft length measurement and storage device 5.

In this state, the control device detects the error yarn processing weft yarn sensor 1
When it is determined by the detection operation 1 that the miss thread Wa is connected to the weft thread W on the side of the weft insertion nozzle 4, the cutter I3 for removing the miss thread on the side opposite to the cotton insert nozzle moves from the retracted position to the cutting position and stops.

However, since the misplaced yarn Wa is not captured by the yarn end processing system S, the misplaced yarn processing cutter (3) on the side opposite to the weft insertion nozzle does not cut the misplaced yarn Wa.

Further, the mis-thread yarn traction and removal device I4 moves from the retracted position to the weft take-up position and stops, and when the on-off valve 1408 is opened, a suction force is generated in the mis-thread yarn traction and removal device I4, and the three-way switching valve 413. Water is injected from the weft insertion nozzle 4 for a predetermined period of time by selectively opening and closing the opening and closing valve 410 and the relief valve 411. Then, due to this jet flow, the weft yarn W from the weft length measuring and storage device 5 flies through the opening between the warp yarn Y and the yarn end treatment system S, and is sucked into the error yarn pulling and removing device 14, while being passed over and pulled. Ru. Then, the control device controls the error thread traction removal device 14.
It is determined that the weft yarn W has been picked up, and the error yarn traction and removal device 1
When the traction operation 4 continues, the folded portion a of the miss yarn Wa is peeled off from the front P and removed.

When this traction removal is completed, the weft yarn W is straightened and immediately stretched between the weft insertion nozzle 4 and the error yarn traction removal device 14, as shown in FIG. 7(D).

Then, when the time has elapsed since the water injection from the weft insertion nozzle 4 started and the time during which the weft yarn W would have been straightened and immediately stretched between the weft insertion nozzle 4 and the error yarn traction removal device 14, The weft insertion nozzle-side mis-thread processing cutter 12 cuts the weft W by performing a cutting operation while moving from the retracted position to the cutting position. In parallel with this, when the control device determines that the misplaced yarn Wa has been removed through several detection operations of the weft sensor 14+1 of the misplaced yarn traction and removal device 14, the control device causes the loom main shaft to move as shown in FIG. 7(E). At the same time, the start position of I is determined, a restart signal is output, the main motor (not shown) is rotated in the normal direction, the main shaft of the loom is driven in the normal direction, and after several times of dry reed beating, the restart signal is output. The machine inserts the weft and restarts weaving operation.

By the way, in the process due to the two weft insertion defects mentioned above, if the misplaced yarn Wa gets entangled with the warp Y as shown in FIG. In the process of flying through the opening between Y and the yarn end processing system S and being pulled and removed by the mis-thread pulling and removing device 14, the mis-thread Wa is pulled into the mis-thread processing cutter 1 on the side opposite to the weft insertion nozzle.
3, and is immediately straightened and stretched between the entangled portion C with the warp Y and the mis-thread pulling and removing device 14. For this reason, the weft sensor 1411 of the mistaken yarn traction removal device 14
continues to detect the presence of a weft yarn, and the control device determines that it is impossible to automatically pull and remove the missed yarn Wa any further, and issues an alarm to the operator as shown in step I19 in FIG. We will notify you and cancel further processing.

Second Embodiment (Refer to Figures 9 and 10) As shown in Figure 9, this second embodiment is characterized by the structure of the cutter 13A for removing miss yarns on the side opposite to the weft insertion nozzle. The basic structure of pulling and removing the Wa toward the opposite side of the weft insertion nozzle 4 is the same as in the first embodiment, so the same parts as in the first embodiment are given the same reference numerals.

This cutter 13A for removing the wrong yarn on the side opposite to the weft insertion nozzle is attached to the loom frame side, and during weaving operation, the cutter 13A is
The cutter 10 normally used on the side opposite the weft insertion nozzle shown by the solid line in FIG. 9 does not come into contact with the weft thread W to be inserted. After a predetermined time delay from the generation of the defective stop signal, a cutting operation signal is output from the control device to make at least one rotation in the direction of the arrow shown in FIG. It is an electromagnetic drive type that returns to the retracted position after cutting the part between it and the system S. Specifically, the cutter 13A for removing miss yarn on the side opposite to the weft insertion nozzle is a belt-shaped cutter body 1 called a commercially available cutter knife.
305 is covered with a cover 1306, and this cover 130
6 is coupled to an output shaft 1308 of a rotary solenoid 1307 constituting an electromagnetically driven actuator, and this rotary solenoid 1307 is attached to a temple bracket 1801 attached to the temple par 18. When the cutter body 1305 is stopped at the retracted position, a substantially semicircular notch 1309 is provided on the reed side edge of the other end of the cover 1306. blade 1
310 is exposed.

The operation of this second embodiment will be explained based on the flowchart of FIG. 10. Steps 201 to 205 are the same as steps 101 to 105 of the first embodiment. If it is determined in step 104 that the miss yarn Wa is connected to the weft yarn W, the process proceeds to step 206.

In step 206, the mis-thread pulling and removing device 14 moves from the retracted position to the weft-receiving position and generates a suction force, while the mis-thread processing cutter 13A on the side opposite to the weft insertion nozzle performs a cutting operation. That is, the cutter body l305 is rotated by a predetermined angle in the direction of the arrow from the retracted position shown by the solid line by the rotational drive of the rotary solenoid 1307, and is stopped at the retracted position. Due to this cutting operation of the cutter 13A for removing mis-threads on the non-weft insertion nozzle side, the non-weft insertion nozzle is located at the weaving niP and its vicinity, as shown by the dashed line between the warp Y row and the yarn end processing system S. A plurality of uncut weft yarns W and miss yarns Wa are each cut together with a side regular cutter IO. The process then proceeds to step 207.

Steps 207 to 216 are step 107 of the first embodiment.
- Same as 116. Then, in step 216, if pulling and removal of the mistaken thread Wa is not completed, step 21
Proceed to step 7.

In step 217, the error yarn pulling and removing device 14 is oscillated once. The process then proceeds to step 218.

Steps 218 and 219 are steps 118 in the first embodiment.
, 119. and step 218 or 2
If the pulling and removal of the misplaced yarn Wa is completed in step 11, the process advances to step 220.

In step 220, the error yarn traction and removal device I4 is returned to the retracted position. The process then proceeds to step 221, which is the same as step +21 in the first embodiment. As a result, as in the first embodiment, when a weft insertion failure occurs such as a dead stop or a weft not reaching the regular weft sensor 7, the warp Y row and the yarn end processing system S Mistake thread W between
a is cut, and the weaving operation of the loom is automatically restarted.

Third Embodiment As shown in FIG. 11, this third embodiment omits the mistaken yarn traction and removal device 14 disposed on the side opposite to the weft insertion nozzle 4 of the yarn end treatment system S from the first and second embodiments. , is characterized in that it is provided with a mis-thread pulling and removing device 21 that pulls and removes mis-threaded yarn Wa toward the weft-inserting nozzle 4 side when a weft insertion failure occurs.
The basic structure for cutting the misplaced yarns Wa between the warp Y row and the yarn end treatment system S prior to pulling and removing the misplaced yarns Wa is as described in 1.
Since it is the same as the second embodiment, the first embodiment. The same parts as in the second embodiment are given the same reference numerals.

Here, the anti-cotton insertion nozzle side mis-thread processing cutter 13B, which constitutes a cutter for cutting the mis-threaded yarn Wa between the warp Y row and the yarn end processing system S, prior to pulling and removing the mis-threaded thread Wa, is an electromagnetically driven cutter 13B. It is schematically illustrated as scissors.

Further, the mis-thread pulling and removing device 2I includes a pulling roller means 2110.
and a suction means 2I20.

The traction roller means 211O has two rollers 21+1°21
During the weft insertion period, the two rollers 2I11 and 2112 are activated by an opening operation signal from the control device.
At the same time, during the period when weft insertion failure occurs, the two rollers 2111 and 2112 are brought into contact with each other by a traction operation signal from the control device to open the weft insertion nozzle 4.
and the warp Y row, the weft yarn W is held between the weft yarn W and the warp Y row at the flight path L4 of the weft yarn W during normal weft insertion, and under this sandwiched state, the two rollers 2+11.2112 are rotated in opposite directions as shown by the arrows. By doing so, the miss yarn Wa connected to the weft W is pulled and removed from the warp Y row toward the weft insertion nozzle 4 side. In this case, one of the two rollers 2111゜21!2 may be configured as a driving roller and the other as a driven roller, but
Both rollers 2+11.2112 may also be configured as drive rollers.

The suction means 2! 20 is for capturing, on the side of the weft insertion nozzle 4 of the traction roller means 211°, the miss yarn Wa connected to the weft W pulled and removed by the traction roller means 2110 during the period when weft insertion failure occurs. nozzle or first
．． An ejector nozzle like the mistaken yarn traction removal device I4 of the second embodiment, and two
This is one of various structures in which the misplaced yarn Wa is captured in the other nozzle by blowing air from one of the two nozzles into the other nozzle.

According to the third embodiment, when a weft insertion failure occurs, for example, an idle stop occurs, the cutting operation of the regular cutter 9 on the weft insertion nozzle side is stopped and the erroneous yarn Wa remains connected to the weft insertion nozzle 4 on the loom main shaft. After stopping the loom, the main shaft of the loom is reversed and stopped at the fixed position where the warp opening is at its maximum in the weaving cycle in which the weft insertion failure occurred, exposing the miss yarn Wa to the front P, and the control device detects the mistake. Sensor for thread processing! When it is determined by the detection operation of 1 that the miss thread Wa is connected to the weft thread W on the side of the weft insertion nozzle 4, the miss thread processing cutter 13B on the side opposite to the weft insert nozzle performs a cutting operation, while the miss thread pulling and removing device 21 Traction removal works.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and can also be applied to an air injection type loom, for example, by replacing the weft insertion water supply path 401 of the weft insertion nozzle 4 with an air supply path, although not shown. In this case, in addition to the weft insertion nozzle 4, auxiliary air injection from a plurality of weft insertion sub-nozzles arranged at predetermined intervals in the weaving width direction of the Y row of warp yarns may be used in combination as in the normal weaving operation.

In addition, the cutter 13 for removing the wrong yarn on the side opposite to the weft insertion nozzle, the twisting device 8 for yarn end treatment system, and the wrong yarn pulling and removing device 14 are attached to the same member, and this same member is attached to the temple parr 18.
Even if the position is fixed so as to be movable along the weaving width direction, the same effect as in the above embodiment can be obtained.

Furthermore, it is conceivable that by controlling the drive of the common cutter 10 on the side opposite to the weft insertion nozzle by a control device, it can be used instead as the cutter 13, 13A, 13B for removing the wrong yarn on the side opposite to the weft insertion nozzle.

In addition, when the mis-inserted yarn Wa is exposed on the front P, the main shaft 1 may be rotated in the normal direction. In this case, it is necessary to set the position of the weaver P and the warp tension to predetermined values when restarting.

Effects of the Invention As described above, according to the present invention, there is no problem in processing when the weft does not reach the regular weft sensor during weaving operation, and even when the weft stops, the cutter can detect the warp and yarn end of the error yarn. The loom can be automatically restarted by cutting the part between the loom and the processing system, pulling and removing the cut erroneous thread by a erroneous thread pulling and removing device.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the main parts of the first embodiment of the present invention;
The figure is a side view of the suction mouth of the mis-thread pulling and removing device of the first embodiment as seen from the weft insertion nozzle side, FIG. 3 is a cross-sectional view taken along line l1l-III in FIG. 2, and FIG. FIG. 5 is a flowchart of the first embodiment, FIGS. 6 to 8 are action explanatory diagrams of the first embodiment, and FIG.
The figure is a perspective view showing the main part of the second embodiment of the present invention, Figure 1O is a flowchart of the second embodiment, Figure 1+ is a schematic configuration diagram showing the third embodiment of the present invention, and Figure 12 is a flowchart of the second embodiment. FIG. 1 is a schematic configuration diagram showing a weft processing device of a conventional fluid jet loom. l... Loom main shaft, 2... Reed, 4... Weft insertion nozzle, ■ 3.13A, 13B... Cutter (cutter) for mishandling threads on the opposite weft insertion nozzle side, S... Yarn end Processing system, W...
・Weft thread, Wa...mistake thread, Y...warp thread. Figure 2 Cause

Claims (1)

[Claims] (1) A yarn end processing system is installed in parallel on the side opposite to the weft insertion nozzle in the warp series, and when a mis-inserted yarn occurs, the weft cutting function on the weft insertion nozzle side is stopped and the system is connected to the weft insertion nozzle. In the weft processing device of a fluid injection type loom, the loom main shaft is stopped, the erroneous yarn is exposed on the weaving front, and then the erroneous yarn connected to the weft insertion nozzle is pulled and removed by the erroneous yarn traction and removal device. A weft processing device for a fluid jet loom, characterized in that a cutter is provided to cut misplaced threads between a warp series and a thread end processing system prior to traction removal.