KR860001418B1 - Weft operating apparatus during stopping of jet loom - Google Patents

Abstract

The last weft pickedf before a shuttleless loom is stopped by a stop signal, e.g. due to weft breakage, is released from the fell of the fabric by a pusher attached to a transverse beam and movable from a retracted position to a position between the fabric fell and the last-picked weft. A released weft is collected by a suction nozzle.

Description

Weft treatment method when the jet loom is stopped

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows the outline | summary of the drive system of the jet loom which implements this invention.

2 is a schematic plan view of an apparatus for carrying out the present invention.

3 (a) and 3 (b) are side views illustrating the principle of the present invention.

4 (a), 4 (b), and 4 (c) are side views of the apparatus for carrying out the present invention.

5 is a side view of another apparatus for implementing the present invention.

* Explanation of symbols for main parts of the drawings

11: drive motor 15: crankshaft

24: heald frame 25: body

26: enclosed guide 43: supply roller

44: weft 46: full pipe

48: gripper 50: side drum

49: main air jet nozzle 51, 52: detector

53 extrusion member 54 arm member

61: suction nozzle 62: reciprocating member

63: guide plate 64: weft cutting cutter

67: fluid pressure cylinder 74: longitudinal

91: child extrusion member 88. 89: limit switch

)직기 상세하게 말하면 애어젯트직기 또는 워터젯트직기의 정지시의 위사처리방법에 관한 것이다.The present invention is absolutely

In more detail, the present invention relates to a weft treatment method for stopping an airjet loom or a waterjet loom.

口) 속으로 위입시키는 애어젯트직기 또는 워터젯트직기가 사용되고 있다.In order to speed up the weaving operation, a spout formed between the jet nozzle and the inclined top and bottom yarns is measured.

Airjet weaving machines or waterjet weaving machines are used.

In such a high speed loom, the weaving speed is large, and thus the effect on productivity decrease caused by the stopping of the loom is more pronounced than in the conventional loom.

Therefore, it is desirable for the jet loom to keep the loom stop time as short as possible.

On the other hand, in jet looms, unlike the conventional user looms, the weft yarns are low-restrained by a fluid such as air or water, without using a book.

)까지 위사가 도달되지 않는 소위 반송(搬送)미스가 생길때가 있다.In other words, there is a so-called inlet supply miss in which the weft is not supplied from the jet nozzle or the jet nozzle is supplied from the jet nozzle.

Occasionally there is a so-called conveying miss in which the weft is not reached.

In the jet loom operating on the highway, even if the loom is stopped immediately after finding the inlet miss, each part of the loom is inertial operation after detection of the inlet miss for about one cycle in order to prevent each part of the loom from being destroyed by excessive deceleration. The time is selected to stop the loom.

For this reason, when the jet loom is stopped by the conventional slipping miss signal, the next stepping cycle is performed before stopping.

Therefore, it is necessary to reverse the expectation to remove not only the weft yarns in which the false entry occurred but also the weft yarns in the cycle after the false miss.

By the way, the weft yarn enclosed immediately after the weft miss is held firmly in the woven fabric like the normal weft yarn, so it is not easily removed and the removal work is extremely cumbersome.

도 포함)이 절단되거나 인위적 조작에 의하여 직기의 스윗치가 끊어지게 되면 전술한 이유와 마찬가지 이유에 의하여 직기는 관성으로 1사이클정도 작동한 후에 정지한다. 직포에 직단(織段)등의 흠점이 생기는 것을 방지하기 위하여 이 관성운동중에 위입된 위사를 제거시키고저 하면 전술한 바와같은 이유에 의하여 그제거가 용이하지 않다.Also, during the weaving work,

Cut) or the switch of the loom is cut by artificial manipulation, the loom stops after one cycle of operation by inertia for the same reason as described above. To prevent the formation of flaws such as uprights on the woven fabric, removing the wefts engraved during this inertial movement is not easy for the reasons described above.

As described above, the present applicant can automatically remove the missed weft yarns such as when the jet loom stops abnormally, and stop the jet loom in the opening state by the stop signal to free the weft yarns just before stopping. Weft treatment at the time of stopping of the jet loom which separates the weft from the woven fabric by automatically inserting the extrusion member installed on the jet loom between the electric weft and the woven fabric according to the compression start signal. A method was proposed.

According to this proposed method, the encased weft is first removed, for example, in a cycle after the inlet miss, that is, in a cycle immediately after loom stop. Subsequently, the weft yarn which entered before the cycle and generated false miss was similarly removed by this proposed method. Thus, weft processing at the time of stopping the jet loom can be performed completely or almost automatically.

In addition, the present applicant may facilitate the repair of jet looms such as misalignment, incline cutting, or stopping looms by artificial manipulation, and at the same time, the missed yarn of jet looms which can be performed without requiring skill. In other words, when we detect the abnormal stop signal of the loom in the jet loom that weaved the weft, which is measured as the upper weft, broken slope, etc., from the jet nozzle to the low restraint formed between the upper and lower inclinations, until the loom stops. Missed thread in a jet loom which reverses expectations to the state where the thread can be processed while the braking of the loom is prevented and the missed thread which has transmitted the above abnormal stop signal without supplying the weft to the bottom can be processed. A treatment method was proposed.

In the case of performing the method described earlier with this method, since the encroachment after the encroachment miss is prevented, only the weft missed weft is automatically separated from the woven fabric, and the missed weft that is separated can be easily removed to restart the loom.

In addition, the present applicant temporarily disables the weft cutting function of the weft cutting cutter installed on the jet nozzle side when the weft detecting device detects the weft miss, and operates the loom while the weft is connected to the weft missed from the jet nozzle. A method for treating missed yarns in a jet loom is proposed in which the missed yarn is easily removed by stopping and pulling out the weft missed weft together with the uncut weft.

When the missed thread is treated together with the method described earlier, the delegated weft can be performed completely or almost automatically.

It is also possible to simultaneously perform the above three missed thread processing methods.

As described above, the first method described above is a method for treating missed yarns that can exhibit a very excellent effect, and thus, various applications are possible as described above.

However, in a woven fabric with a dense fabric such as a corduroy, it is sometimes impossible to remove the weft by only operating the extrusion member once.

It is an object of the present invention to provide a method for weft treatment at the time of stopping of a jet loom which can be reliably removed at all times.

In the present invention, a process of stopping the jet loom in the open state by the stop signal to free the wefts entered immediately before the stop, and positively invading the extruded member installed on the jet loom between the weft and the woven fabric. At least a part of the positives of moving the extruded member in the method of weft treatment at the time of stopping the jet loom, which comprises moving the extruded member away from the woven fabric to separate the weft from the woven fabric, and removing the separated weft. The object is achieved by a weft treatment method at the time of stopping the jet loom which is repeated several times.

When it is difficult for the extruded member to be inserted between the weft yarn and the woven fabric only by making the fabric structure dense and opening the warp so that the last weft yarn is freed, the press member described above is moved immediately from the woven fabric side ( The process of sliding and penetrating along the woven fabric toward the front is repeated a plurality of times.

By repeating this process, the weft is mechanically pressed to allow the intrusion of the extrusion member. In addition, by repeating this process, the weft holding force due to the warp is weakened, and the following separation process can be performed smoothly.

On the other hand, when the weft yarn is firmly held on the inclination and the separation is difficult, the process of moving the extruded member away from the woven fabric and separating the weft yarn from the woven fabric is repeated several times.

The repetition of this process gives a vibration to the gripping portion between the warp and the weft, and as a result, the gripping is alleviated, so that the weft can be easily separated.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, similarly to the method described earlier, even if after weaving, if the loom is inclined to open and the last weft yarn is freed, the weft yarn is slightly separated from the weaving cloth and between the weft yarn and the weaving cloth. It is noted that a small gap is formed in the gap.

In the present invention, the inclination of the loom is brought into an open state. In this open state, as shown in FIG. Move in the direction just before the distance of several centimeters.

Since the upper and lower inclinations 21a and 21b are opened, the upper yarns 44b enter the last as described above, and the weft yarns 44b form a small gap between the weft yarns 44a in the woven fabric.

For this reason, the tip 53a of the extrusion member 53 which has moved the woven fabric into contact with the woven fabric can penetrate into the small gap between the woven fabric and the weft yarn 44b by the pressing force. (See "Figure 3b")

By moving the extrusion member 53 away from the woven fabric, the weft yarn 44b can be separated from the woven fabric, and as a result, the weft yarn can be easily removed by an appropriate extraction means or a human hand. In addition, the tip of the extrusion member 53 is slid along the woven fabric over a distance in the range of 1-2 minutes to several centimeters of weft yarn. This is because even if the position is slightly changed, the tip of the extrusion member 53 can be reliably inserted into the small gap between the woven fabric and the last weft yarn so that the weft yarn can be extruded last.

Therefore, when the above-mentioned fluctuations are small, the sliding distance can be made extremely small.

An apparatus implementing the above-described method will be described with reference to FIGS. 1, 2 and 4.

1 is a side view showing an outline of a drive system of an air jet loom according to the present invention, and power is transmitted to the crankshaft 15 through a driving member such as a V belt 13 from a drive motor 11 like a conventional apparatus.

The crankshaft 15 drives the yaw beam 19 through the transmission 17 to release the incline 21 and frictionally drives the winding roller 32 by the surface roller 31 to wind the woven fabric 33.

The transmission ratio of the transmission 17 is adjusted according to the displacement of the tension roller 23, and the tension of the inclination transmitted through the back roller 22 becomes a predetermined value. The crankshaft 15 moves the heald frame 24 up and down to perform the opening movement required for the inclination 21.

In addition, the locking shaft 29 supports slae 27 via the slaisword 28, and the slab 27 has a body 25 and a mouth guide 26 mounted thereon.

The crankshaft 15 moves the body 25 and the indentation guide 26 through the locking shaft 29 between the solid line and the broken line position, thus beating the weft yarn in which the body 25 is enclosed. The above structure is the same as that of the conventional air jet loom.

Next, the transfer mechanism will be described with reference to the second system.

The weft 44 is released by the feed roller 43 from the cheese 41 past the tensor 42 and stored in the full pipe 46 by the air nozzle 45.

The measuring drum 50 is interlocked with the crankshaft 15 (FIG. 1) and at the same time frictionally driving the supply roller 43. As the crankshaft 15 (FIG. 1) rotates, the weft 44 of the predetermined length is moved by the supply roller 43. It is measured and supplied to the air nozzle 45.

The full pipe 46 has a slit 47 on one side and the weft 44 stored in the full pipe 46 can be pulled out of the islet 47.

In addition, instead of the above-described measuring storage mechanism in which the supply roller and the pull pipe are combined, for example, wefts on the main surface of the measuring drum disclosed in Japanese Patent Application Laid-Open No. 57-16946 or 58-58028 May be used to control the holding and control of the release from the measuring drum.

A gripper 48 is installed between the full pipe 46 and the main air jet nozzle 49 to control the supply of the weft 44 from the full pipe 46 to the main air jet nozzle 49.

The main air jet nozzle 49 injects compressed air synchronously with the rotation of the crankshaft 15 (FIG. 1) and injects the weft 44 into the body 25 at a low restraint formed between the upper and lower inclinations 21.

A Japanese patent publication is provided by installing a suitable type of detector 51,52 such as a photoelectric, mechanical or fluid type that detects whether or not the weft 44 is securely inserted near the moving side of the main jet nozzle 49 It is detected that the weft yarn 44 is reliably supplied from the main air jet nozzle 49 in accordance with the method described in Heavy Publication No. 54-21475.

A suction nozzle 61 of a known ejector type is provided between the main air jet nozzle 49 and the moving member to generate a suction force by the action of compressed air. The suction nozzle 61 is connected to a suitable reciprocating member 62 such as an air cylinder or an electromagnetic solenoid, and the position of the suction nozzle 61 is separated from the path of the weft from which the tip of the suction nozzle 61 is ejected from the main air jet nozzle 49 by the operation of the reciprocating member 62. You can move between locations near the weft path.

The guide plate 63 is installed at the tip of the suction nozzle 61 so that when the suction nozzle 61 is retracted, the guide plate 63 is out of the path of the weft thread and when the suction nozzle 61 is advanced, the guide plate 63 crosses the weft path.

The rear end of the suction nozzle 61 is connected to the expansion-and-collective connector 66 of the plain clothes type, and this suction nozzle 61 is moved smoothly.

The suction nozzle 61 and the guide plate 63 integrally formed therein are not limited to moving in the front-back direction of the loom, but may be of the type that rotates in the vertical direction, for example.

65 is a valve for controlling the flow of air toward the suction nozzle 61.

Between the main air jet nozzle 49 and the gripper 48, an auxiliary gripper 72 which is opened and closed by an electronic solenoid 71 or an air cylinder (not shown) is installed.

73 is a photoelectric, mechanical or fluid filler. The aforementioned feed roller 43 is supported on the tip of the arm 83 rotatably supported around the pin 81.

A spring 85 is installed at the end opposite to the support 43 of the arm 83, so that the arm 83 is in contact with the tip of the piston of the air cylinder 86 or the armature of the solenoid.

Therefore, the supply roller 43 may be pressed by the side drum 50 and frictionally driven by the action of the spring 85 and the air cylinder 86 and may not be driven by the side drum 50 away from the side drum 50.

87 is a brake shoe for applying friction braking to the supply roller 43 away from the side drum 50. A weft cutting cutter is installed on the loom.

In this weft cutting cutter, the weft held by the holding portion of the guide is cut by a fixed knife and a processing knife linked to the crankshaft during normal operation.

On the other hand, when the abnormal stop signal is transmitted, the weft thread is not held by the recessed portion of the guide and is cut off between the movable knife and the fixed knife.

Next, the structure of an extrusion member is demonstrated, referring FIG.

The beam member 76 longer than the straight width of the loom is supported by the upper end 74 (Fig. 4) between one end of the loom and is installed above or below the woven fabric of the loom.

The beam member 76 is secured with a plurality of arm members 54 spaced in the center of the width or in the width direction according to the width of the fabric, the fabric structure, the material of the thread, and the movement stroke of the arm member in the front and rear directions. The extruded member 53 is rotatably installed by the pin 55.

The tip of the bolt 78, which is integral with the bracket 77 protruding integrally from the arm member 54 near the cell badge, is engaged with the projection 74a formed in the interbody 74, so that the arm member 54 moves integrally with the interbody 74.

The spring 79 urges the tip of the bolt 78 in the direction of the projection 74a. When the bolt 78 is separated from the projection 74a, a suitable pressing force is applied to the arm member 54 by the spring 79.

The bolt 57 is screwed into the bracket 56 formed integrally with each arm member 54, and its tip is pressed against the back surface of the extruded member 53 having a? -Shape. The spring 58 presses the extrusion member 53 against the bolt 57.

The longitudinal section 74 is rotatably supported around the support shaft 75, and the piston rod 68 of the fluid pressure cylinder 67 such as an air cylinder is connected to the lower end thereof with a pin 64. This hydraulic cylinder 67 is supported on the frame by pin 64.

In addition, the fluid pressure cylinder may be provided on both sides of the frame of the loom, or may be provided only on one side as shown in FIG.

Limit switches 88,89 are mounted on the frame to control the direction of operation of the piston rod 68 of the hydraulic cylinder 67.

During retreat of piston rod 68 of hydraulic cylinder 67, piston rod 68 advances when a dog (not shown) mounted at interval 74 hits limit switch 89. When the above dog hits the limit switch 88, the piston rod 68 retreats. You may repeat this operation as many times as necessary.

Instead of the control by the limit switches 88 and 89 described above, control by a computer may be performed.

Next, a description will be given of an embodiment of a weft treatment method for abnormal stop of the present invention.

The weft yarn 44 is enclosed with a low restraint formed between the upper and lower inclinations 21 by opening the heald.

In other words, the weft yarn 44 released from the cheese 41 through the tensor 42 in FIG. 2 is measured by the supply roller 43 rotating in accordance with the rotation of the crankshaft 15 (figure 1), and then the air nozzle 45 (FIG. 2). Is stored in the full pipe 46.

The compressed air injected from the main air jet nozzle 49 is operated by controlling the gripper 48 and the main air jet nozzle 49 installed between the full pipe 46 and the main air jet nozzle 49 synchronously with the rotation of the crankshaft 15 (FIG. 1). The weft yarn 44 stored in the above-mentioned full pipe 46 is enclosed into a low bond formed between the up and down inclinations 21.

The detector 51,52 installed near the main jet nozzle 49 and near the moving side checks the intrusion state when the inclination 21 is almost closed (crank angle 250-300 degrees), and the weft warp in which the weft is enclosed by the mouth due to some cause If an inlet miss has not been reached to the opposite side of the nozzle 49, the detectors 51 and 52 emit an inlet miss signal.

The operation of the motor 11 (FIG. 1) which drives the loom stops by this false input signal, and enters inertia operation. In addition, when the upper miss signal is transmitted, the piston of the north north movement member 62 moves forward to intersect the guide plate 63 installed on the end of the suction nozzle 61 in the path of the weft.

In this manner, the wefts ejected from the main air jet nozzle 49 after the inlet miss are guided to the guide plate 63 to reach the suction nozzle 61 and are sucked by the suction nozzle 61. Also, the cutting function of the weft cutting cutter is temporarily inactivated, and the weft-insulated weft thread is connected to the jet nozzle.

Therefore, gastric infiltration after gastric miss signal transmission is inhibited, and the weft thread is connected to the air jet nozzle 49 via the suction nozzle 61 via the mouth.

The loom in inertial operation operates about one cycle, and then stops when the inclined 21 is closed by the chaff (crank angle approximately 300 degrees).

Then, we prepare for the station turn. That is, the main air jet nozzle 49 is brought into a non-operational state. Close the gripper 48 or close the auxiliary gripper 72 by the solenoid 71.

In addition, the air cylinder 86 is operated so that the supply roller 43 is moved away from the side drum 50 to inactivate the weft feed mechanism.

On the other hand, the piston of the reciprocating member 62 is retracted so that the guide plate 63 of the tip of the suction nozzle 61 is released from the path of the weft. In this state, the drive motor 11 (FIG. 1) is directly reversed (or rotated) or an auxiliary motor (not shown) installed separately from the drive motor 11 is operated to reverse approximately 480 degrees. By rotating (rotating), the inclined 21 is opened (crank angle approximately 180 degrees).

In such an open state, the extruded weft yarn is separated from the woven fabric by inserting the extruded member into the small gap between the weft and the woven fabric.

In addition, the extrusion start signal of the extruded member may be sent to the timer when a predetermined time elapses after the stop signal of the above-mentioned false inlet signal or the like. This may be done, or by pressing a push button by a human hand.

In normal operation, as shown in FIG. 4 (a), the piston rod 68 of the fluid pressure cylinder 67 is protruded, and the longitudinal section 74 is allowed to rotate clockwise around the axis 75.

The tip of the bolt 78 is engaged with the projection 74a, the tip of the bolt 57 is engaged with the back of the extrusion member 53, the tip of the pressing member 53 is separated from the woven fabric, and the pressing member 53 does not interfere with the weaving operation of the jet loom during normal operation. Do not.

When the loom is stopped by the stop signal described above, the inclination 21a, 21b at the top and bottom stop in the open state, and the extrusion start signal is sent, the piston rod 68 of the fluid pressure cylinder 67 retreats.

As a result, the section 74 rotates around the axis 75 counterclockwise.

At this time, the extruding member 53, the arm member 54 and the interbody 74 are rotated as a unit until the tip of the extrusion member 53 comes into contact with the woven fabric (see also the fourth " b "). When the extrusion member 53 contacts the woven fabric, the downward movement of the extrusion member 53 is hindered, and the extrusion member 53 rotates around the pin 55 so that the extrusion member 53 falls from the bolt 57.

As a result, the tip of the extrusion member 53 is brought into contact with the woven fabric by a predetermined pressing force by the spring 58.

The piston rod 68 of the hydraulic cylinder 67 is retracted again, and the longitudinal section 74 is rotated again in the counterclockwise direction, and the tip of the extrusion member 53 slides on the fabric with a moderate pressure.

When the tip of the pressing member 53 reaches the small gap between the woven fabric and the final enclosed weft 44 (see also the third "a" and the third "b"), the spring 58 or, in some cases, the spring 79 The tip of the pressing member 53 enters the gap. (See also fourth "c".)

If the fabric structure of the woven fabric is dense as described above, the small gap formed between the weft and the woven fabric is extremely small by opening the warp, and thus the extruded member cannot reliably enter the small gap.

Thus, when the piston rod 68 of the hydraulic cylinder 67 retreats and hits the limit switch 89, the piston rod is advanced again.

Accordingly, the tip of the extrusion member 53 slides in the opposite direction to the above-described direction along the woven fabric.

When the limit switch 88 is hit, the tip of the extruded member 53 again slides out in the first direction along the woven fabric toward the front.

If the extruded member enters the small space once, the gap will be widened by the extruded member, so that the tip of the extruded member will certainly enter the small gap by the next sliding action even if the extruded member leaves the gap once.

On the other hand, as described above, even when the fabric structure is dense and the gap is small, and the extrusion member cannot penetrate the gap, the weft yarn 44b is separated from the last by the tip of the extrusion member 53 during the first sliding operation in the direction of increasing the gap. Is pressed.

Therefore, when the extrusion member 53 reaches the next time, the gap is widened, and the extrusion member 53 can easily enter the gap at this time.

Moreover, since the sliding resistance given to the weft yarn by the extrusion member when sliding is sufficiently small, the gap opened by the retraction of the extrusion member is not narrowed.

By retracting the piston rod 68 of the fluid pressure cylinder 67 while the extruded member is inserted into the small gap, the extruded member 53 separates the weft 44b from the woven fabric.

In the case where the weft 44b is held firmly in the woven fabric, the operation of separating the weft 44b from the woven fabric is repeated as described above.

This repetitive operation slightly weakens the holding force of the warp weft 44b by vibrating, as it is, between the weft yarn and the warp yarns 21a and 21b holding it firmly, so that the weft yarn can be easily separated from the woven fabric.

Since the wefts separated in this way are not already held firmly on the inclination, they can be easily pulled out and removed by means of a suitable extraction means such as, for example, a suction nozzle 61 or by a human hand.

After the thread is removed in this manner, the switch is turned on automatically or by human hand to reverse the expectations about 270 degrees until the inclined 21 is closed (crank angle about 270 degrees), making it suitable for maneuvering the Air Jet loom. .

The Main Air Jet Nozzle 49 is then brought into operation.

The electronic solenoid 71 is made non-excited to open the auxiliary gripper 72, while the gripper 48 is also brought into normal operation.

In addition, the piston of the air cylinder 86 is retracted, and the supply roller 43 is pressed against the main surface of the side drum 50 so that the weft feed mechanism is operated.

The operation of the air jet loom is restarted.

Another apparatus for implementing the method of the present invention is described with reference to FIG. In the apparatus shown in FIG. 4, the reciprocating motion of the hydraulic cylinder is controlled to repeat the movement of the extrusion member 53 several times.

On the other hand, in the apparatus shown in FIG. 5, the extrusion member 53 is rotatably supported by the extrusion member 53 by the pin 92, and the self-extrusion member 91 is rotated with respect to the extrusion member 53 to rotate the extrusion member 53 and the self-extrusion. The member 91 repeats the movement of the extrusion member as a whole.

That is, the lever 94 is rotatably supporting the lever 94 at the interval 74.

The lower end of the lever 94 connects a reciprocating member such as an armature of the solenoid 96 or a piston rod of a fluid pressure cylinder.

The upper end of the lever 94 connects 93 between the connections by a pin 98.

The connection 93 is connected to the self-extrusion member 91 by the pin 97.

Thus, by reciprocating the reciprocating member, the self-extrusion member 91 rotates around the pin 97 by the lever 94 and the connecting portion 93.

The operation timing of the self-extrusion member 91 may be selected in the same manner as in the above-described embodiment, and may be controlled by a computer or a limit switch.

In the above description has been described an example of restoring the weft missed weft, the present invention can be applied to the stop of the jet loom machine by the inclination break, moving break, or artificial manipulation.

According to the present invention, weft removal at the stop of the jet loom can be reliably performed, and weft removal can be completely and almost completely automated.

Claims (4)

In the loom which stops the expectation by the stop signal, it forms the opening state of the inclination at the time of stopping or after stopping to release the weft yarn which entered before the stop, from the crossing state by the inclination, A method for weft treatment at the time of stopping of a jet loom, characterized by automatically inserting an extrusion member in between to separate the weft yarn from the woven fabric and remove the separated weft yarn from the inclination. The method of weft treatment at the time of stopping of a jet loom according to claim 1, wherein the jet loom is prevented from entering after the stop signal is transmitted. The weft treatment method according to claim 1 or 2, wherein the weaving machine stops the loom without cutting the weft yarn so that it continues from the main nozzle after the stop signal is transmitted. The process according to claim 1 or 2, wherein the extruded member is slid along the woven fabric from the woven side toward the front side by the stop signal described above, and the extruded member placed before the stop is separated from the woven fabric. The weft treatment method at the time of stopping the jet loom which performs repeatedly several times.

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