JPS6262968A - Weft yarn removal in fluid jet type loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] Kiba IJJ relates to a weft removal method in a fluid jet loom, and more specifically, the weft is removed by jetting the weft from a fluid jet nozzle disposed on the weft insertion side. When a weft insertion error occurs during weft insertion, the erroneous yarn is beaten, the loom is stopped while it is still connected to the fluid jet nozzle, and then the erroneous yarn is exposed on the loom and removed. The present invention relates to a weft removal method.

[Technical background of the invention]

Conventionally, as this type of weft removal method, for example, Japanese Patent Application Laid-Open No. 1986-
There is a technique disclosed in Japanese Patent No. 228047. this is,
The present invention is implemented in a fluid jet loom having the basic structure shown in FIG. 19, more specifically, in an air jet loom.

In the figure, reference numeral 1 denotes a weft supply section, which passes from a yarn supply source through a length measuring and storage structure a to a nozzle 3 serving as a fluid injection nozzle.
It supplies weft to the

4 is a sled; 5 is a weft cutting device that cuts the weft at the edge of the woven fabric after beating; 6 is a suction pipe that sucks the weft; 7
1 is a weft separation device in which a belt 7a is driven by a drive unit 7c to move a weft S member 7b at the tip of the belt 7a forward and backward along the woven fabric. 8 is a weft thread detector, which detects the presence or absence of a weft thread at the end of the weft insertion period.

Therefore, when the weft detector 8 detects the absence of a weft yarn and outputs a weft insertion error signal, the loom control section outputs a stop command based on this error signal, and stops the loom near the maximum warp shedding. − to make.

In this case, the loom is stopped in consideration of the inertial operation of the loom, so the weft thread that caused the weft insertion error (hereinafter referred to as "mistake thread M") is beaten, and the loom stops after the next weft insertion is performed. . During this inertial operation, the weft thread cutter 215 is temporarily inactivated to cut the weft thread, and the missed thread is connected to the main nozzle 3. In this state,
The suction vibro advances to the tip of the main nozzle 3 and removes the missed thread M.
Another separate weft cutting device (not shown)
The missed thread M is cut between the main nozzle 3 and the suction vibro. Thereafter, the loom is operated in reverse, the relationship between the warp L yarn and the bobbin thread is reversed, and the maximum opening state in which the misplaced thread M is inserted is reproduced, thereby exposing the misplaced thread M on the front of the fabric. Then, the belt 7a of the weft outside-separating device 7 advances, and the yarn separation member 7b at its tip separates the misplaced yarn M pulled by the suction of the suction vibro from the woven fabric. The material is completely suctioned to remove it from the fabric.

However, in this conventional weft removal method, there is a problem in that the weft separation member catches the warp threads when pulling the misplaced threads, causing warp breakage. On the other hand, if you try to pull out the missed yarn without using this weft separation member, the missed yarn has already been reeded and intertwines with the warp rows and is firmly engaged with each warp. There is a problem in that the tension applied to the missed yarn becomes excessive due to the cumulative pull-out resistance at the section, and the missed yarn and the weft yarn connected thereto are likely to break.

Therefore, in order to solve such problems.

The applicant had previously proposed a weft removal method as shown in FIGS. 20 and 21 (Japanese Patent Application No.
No. 70).

This means that when a weft insertion error occurs, the loom is stopped after beating the erroneous yarn M, and the loom is stopped while it is still connected to the seven nozzles IO, and then the loom is operated in reverse.

The weft yarn W is ejected to the side opposite to the weft insertion side with the miss thread M exposed to the fabric facing C1, and the ejected weft yarn W is sucked from the side opposite to the weft insertion side. Then, the consecutive weft yarns W and misplaced yarns M are sucked while maintaining a V-shape that opens on the side opposite to the cotton insert, and during the suction, the misplaced yarns M are separated from the warp yarns Y and removed. (Refer to the single point ttJ line in Figure 20), at this time, the separation of the misplaced thread M from the warp thread Y is carried out on the warp thread Y - wood - wood, and the tension on the misplaced thread during the suction is equal to the resistance of the misplaced thread M against a single warp thread Y. It is caused by. As a result, the pull-out resistance at the engagement portion between the misplaced thread M and the warp thread Y is not accumulated, the tension applied to the misplaced thread M becomes small, and the misplaced thread M or the weft threads connected to it do not accumulate. It becomes difficult to cut.

In this state, as shown in FIG.
Since the weft yarn W connected to the weft yarn W remains in the warp Y opening, the cutter 11 is advanced to the tip of the T nozzle 10 to cut the weft yarn W, and the weft yarn suction device 12 is used to suck it and remove it. . The cutter 11 is, for example, of a type that performs a scissor cutting motion, and is advanced by an actuator 13 at a predetermined time after the erroneous yarn M is torn off from the woven fabric C1. In addition, the code|symbol 14 is a weft supply part.

Thereafter, the loom is set to the starting position, ready for weft insertion, and restarted.

[Problem that the invention seeks to solve]

By the way, in the weft removal method according to this prior art, when the machine is restarted, the initial weft insertion often ends up being defective.

As shown in FIG.
It is in a state where it is stretched over the weft suction device 12 via
The stretched weft is long and has a large tension, so when it is cut by the cutter 11, the weft W1 on the weft supply section 14 side is pulled toward the weft supply section 14 side due to the reaction, and the -L nozzle This is because there are cases where the numbers are 10 and 10.

Therefore, at the time of cutting by force 7 and 11, the applicant
An attempt was made to keep injecting air from the -t nozzle 10 to prevent the weft from being pulled toward the weft supply unit 14 after cutting. However, this time, cutter 11! , when cutting the IJ, the jet air collides with the blades lla and llb of the cutter 11, creating turbulence between the main nozzle 10 and the cutter 11, and the weft W is long on the opposite side of the weft insertion side. The cutter 11 is swung by this turbulent flow.
$15 escaped from the opening and was not cut. If the weft W is not cut, even though the weft W is suctioned by the weft suction device 12 when inserting the weft after restarting, the weft W will meander, and even if it is beaten, it will not work properly. Since it is not driven in, there is a problem in that a noticeable weave step is produced.

Therefore, the technical problem of the present invention is to ensure that the weft W does not come out of the nozzle IO when cutting with the cutter IT.

[L stage for solving problems]

The technical steps of the present invention to solve such problems are to inject the weft yarn to the opposite weft insertion side with the mis-thread exposed on the fabric front, and to inject the injected weft yarn from the opposite weft insertion side. At the same time as suction, the weft yarn is pulled on the F flow side of the fluid injection nozzle, and then the weft yarn is cut near the drawn fabric, thereby removing the miss yarn M connected to the weft yarn. .

[Effect]

According to this means, the weft yarn is ejected to the side opposite to the weft insertion side with the miss yarn exposed on the woven fabric front, and the ejected weft yarn is sucked from the side opposite to the weft insertion side. Then, the continuous weft threads and misplaced threads are sucked while maintaining a V-shape opening on the side opposite to the weft insertion side, and when they are pulled, the misplaced threads are separated from the warp threads and removed. Thereafter, the weft yarn is pulled at the upstream side of the fluid injection nozzle, and the weft yarn is cut near the pulling section. Then, the cut weft yarn joins the missed yarn and is sucked together with the missed yarn to the side opposite to the weft insertion side. Furthermore, the weft yarn near the traction portion is under tension and will not bend.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A weft removal method according to an embodiment of the present invention will now be described in detail based on an air injection loom for carrying out the method shown in the accompanying drawings.

FIG. 1 is a diagram schematically showing the configuration of an air injection loom.

In the figure, 25 is a main nozzle as a fluid injection nozzle, which is fixed to a holder 27 of a reed 26 and connected to a pressurized air supply source 28 via an on-off valve (not shown).
Is it a device that drives the on-off valve in synchronization with the main shaft 30? (not shown) opens the valve to eject pressurized air at a predetermined timing.

The main shaft 30 is driven by a main motor 31 via a belt 32 and is braked by an electromagnetic brake 33. Reference numeral 34 denotes an auxiliary motor that drives the t-axis 30 at a slow speed via a belt 35.

36 is an angle sensor that detects the reference angle of the main shaft.

Reference numeral 40 denotes a weft yarn supply section, which includes a drum-type weft yarn length measuring and storage device W1 that supplies the weft yarn W from the yarn supplying body 41 to the main nozzle 25.
It is equipped with 42. This weft length measuring and storage device 42 is attached to a drum 43 which is held stationary, and a winding arm 4 that rotates relative to the drum 43 is held stationary.
4, wrap the weft W with the arm 4, and wrap the locking body 45, 46 with the arm 4.
The weft W is moved in and out of the drum 43 while maintaining a predetermined relationship with the rotation of the weft 4, and the weft W is supplied to the main nozzle 25 by the length of one weft insertion. 47 is a weft brake, and the fixed piece 4
8 and a clamping body 49 driven by a rotary solenoid shade.
The supply of the weft W between the weft length measuring and storage device 42 and the main nozzle 25 is stopped by pressing the holding member 49 against the fixed piece 48.

Reference numeral 50 denotes a drive device for the weft length measuring and storage device 42, which is provided with a driven shaft 52 that rotates the wrapping arm 44 via a belt 51, and a one-position clutch 53 that connects this driven shaft 52 to the main shaft 30. There is. 54 is a sick device, which is driven by an air actuator 56 connected to the pressurized air supply source 28 via a solenoid valve 55;
This is used to disconnect and connect the one-position clutch 53. In addition, the belt 51 marked with is an electromagnetic clutch 57.
It is also driven by an auxiliary motor 58 which rotates via the auxiliary motor 58. 59 is a proximity switch, and 300 on the T axis 30
It faces an operating piece 59a attached to the driven shaft 52 at a position of .degree.

60 is a weft pulling device arranged near the weft path between the main nozzle 25 and the fabric edge. This is shown in Figure 2(a)(b)
As shown in (c) and (d), a traction opening 61 through which the weft W is drawn is provided on the side of the air guide groove 29a formed in the layer 29. air passage 62
．． Open 63. The first air passage 62 is connected to the pressurized air supply source 28 via the check halupro 4 and the solenoid pulp 65, while the second air passage 63 is connected to the #l Enoki basket 66, and The weft W is drawn in by receiving the jet air from the air passage 62. Note that 67 is a thread guide fitted into the opening of the pulling port 61.

70 is a weft suction device provided on the side opposite to weft insertion,
The structure is substantially the same as the weft traction device 60 described above, and the check valve 71. The weft W is drawn into the mesh basket 66 by air injected from the pressurized air supply source 28 via the solenoid pulp 72 and the mechanical valve 73.

Reference numeral 80 denotes a cutter device, which advances the cutter 81 when a weft insertion error occurs as will be described later.
The cutting is performed near the downstream side of the weft pulling device fi60. In detail, it is configured as shown in FIG.

In the figure, 82 is an air actuator fixed to a bracket 83 fixed to the frame of the loom, and the fixed blade 81a of the cutter 81 is fixed to the bracket 85 fixed to the tip of the protruding rod 84. A movable blade 81b is rotatably pivoted to a bin 86 fixed to 85. The air actuator 82 is a solenoid pulp 87. It is connected to the pressurized air supply $28 via check valve 88. A rod 90 is pivotally attached to the end of the movable blade 81b by a pin 91. This rod 90 passes through the bracket 85 in a slidable manner and is fixed. 96 is a cylindrical body fixed to the bracket 83, through which the rod 90 is inserted. Both end surfaces of this cylinder 96 are stoppers 96a.

96b. A compression spring 97 is interposed between the movable blade 81b and the bracket 85. Since pressurized air is not supplied to the air actuator 82 during operation of the loom, the protruding rod 84 is a built-in spring (not shown). Since it is retracted by the stopper 9
5 comes into contact with the stopper 96b and its movement is restricted, and the spring 97 rotates the 11 hinged blade 81b counterclockwise to form an opening 81c, which is located outside the swing Oa of the reed 26. . When pressurized air is supplied to the air actuator 82, the protruding rod 84 protrudes toward the group 26 side.

At this time, until the stopper 92 comes into contact with the stopper 96a, the moving blade 81b is rotated counterclockwise to form the opening 81c. Then, since the rod 90 is prevented from advancing by the stopper 92, only the bracket 85 moves against the biasing force of the spring 97, and the Itf movable blade 81b rotates clockwise to move the weft W to the
cut off The air actuator 82 is positioned so that the ejection port 84 is prevented from protruding immediately after this cutting is completed. When the solenoid pulp 87 is closed, the spring built into the air actuator 82 causes the protruding rod 84 to retreat from the group 26 side. Along with this, the stopper 93 is first moved to the bracket 85 by the spring 97'! ! The if movable blade 81b is rotated counterclockwise until it contacts J, and then the cutter 81 retreats from the reed 26 side together with the rod 90, and the stopper 95 abuts against the stopper 96b to stop the movement. and wait.

Reference numeral 100 denotes a cutter disposed between the main nozzle 25 and the selvedge, which cuts the weft yarn after beating is finished r. This cutter 100 is set so as not to cut the weft yarn if there is a weft insertion error.

101 is a cutter for cutting the weft W between the main nozzle 25 and the weft pulling device 60, which operates only when the loom is started;
This is for adjusting the tip of the weft W.

Reference numeral 110 denotes a weft yarn detector using an optical sensor or the like, which is attached to the F flow side end of the weft flight path.

The presence or absence of the weft W is detected in the latter half of the weft insertion period.

Further, 120 is a control device configured by the microcomputer 1, and this control device 120 includes a start preparation switch 121, a start switch 122, and a start switch 122 operated by the operator.
ON and OFF signals from the stop switch 123, 1: Angle signal from the angle sensor 36 and the proximity switch 59
- further based on the presence or absence of a weft detection signal from the weft detector 110, the solenoid valve 54° rake 3
3. Main motor 31. The auxiliary motor 34°51N controls the thread brake 47, etc.

Next, the operation of the air injection type loom mentioned above will be explained. First, regarding the basic a-manufacturing interlock, the main shaft 30 shown in Fig. 4
The explanation will be given according to a timing chart based on the rotation angle of.

When the operator turns on the start preparation switch 121, the following preparation operations are first performed. That is, the solenoid valve 72 is opened, the electromagnetic clutch 57 is released, and the weft brake 47 is released. In this state, Shichirin 30 is 30
0'' position is maintained, but when the operator then turns on the start switch 122, the electromagnetic brake 33 is released, power is supplied to the main motor 31, and the loom starts.

Since the solenoid valve 55 is closed during w& machine rotation, the one-body nine clutch 53 is in a connected state. Therefore, the main shaft 30 is rotated by the main motor 31 to drive the warp system, and the driven shaft 52 is also rotated, so that the winding arm 44 starts winding the weft W around the drum 43, and by the time of weft insertion, the winding arm 44 starts winding the weft W around the drum 43. ) The weft W for one cotton insertion is wound between 45 and 46, and the length of the weft W is measured and stored [until around 906].

Immediately before the start of weft insertion, pressurized air is injected from the main nozzle 25, and immediately after that, the locking body 46 is pulled out from the drum 43, and the weft W is ejected from the nozzle 25 together with the pressurized air to perform weft insertion. When the weft yarn W flies in the direction opposite to the weft insertion side and reaches the edge of the fabric, the jetting from the r nozzle 25 stops just before the end of the weft yarn W stored in the drum 43 is caught by the IE body 45. At the same time, the mechanical valve 73 opens and the weft suction device 70 sucks the tip of the weft W. Immediately after the 0m insertion, the locking body 46 engages the drum 43, and then the locking body 45 engages the drum. Suction is further continued in the state where the suction is removed from 43. This suction continues until beating is performed (from around 230" to around 20e)
. During the above-mentioned suction, beating is performed at the θ'' position of the main shaft 30. After beating, the cutter is placed near the 5° position of the shaft 30.
O cuts the weft yarn W inserted as described above.

Note that when the locking body 46 engages the drum 43 and immediately thereafter the locking body 45 is removed from the drum 43 as shown in ]2, the weft W for one weft insertion of the next cycle is transferred to the drum 43. After that, the same operation as above is repeated.

Let us assume that a weft insertion error occurs during normal weaving operations as described in .

The control device 120 performs processing according to the flows shown in FIG. 5 and PJ to FIG. 8, that is, as shown in FIG. After performing the control (1-3, 1-4), weft insertion error monitoring (1-5), warp defect monitoring (1-6), and stop switch are performed based on the detection signal from the weft detection unit 110. 123 ON operation monitoring (1-7) is performed. For example, if the tip of the weft W gets caught in the warp Y and a weft insertion error occurs, the weft detector 110 detects this during the beating process, and the weft insertion error signal is turned on (1-8
), first set the off-spindle [1-angle to 180° for the next cycle (1-9).

Then, as shown in FIG.
1 stop F control, excitation control of the electromagnetic brake 33, and stopping the supply of air to the main nozzle 25 1-1 The weft brake 47 grips the weft, and the cutter 100 is brought into a non-operating state (2-1).

The main shaft 30 is stopped +L L , and the control device 120 recognizes this stop based on the angle signal from the angle sensor 36 (2-2). At this stop angle of 180 @, the reed 26 is at the most retracted position from the front. , the opening 1 of the warp yarns Y is at its maximum, and the miss yarns M are connected to the front of the weaving (Fig. 9A,
B$sho).

When the control device 120 confirms the stop F, it determines whether or not the cause of this stop is a mistake in inserting the cotton.
2-3) Since the cause of the stoppage is a weft insertion error, the solenoid valve 55 is opened (2-4). - The one-position clutch 53 is released by opening the solenoid valve 55.

Next, the 'Iti magnetic brake 33 is released, and the auxiliary motor 34 is started to rotate the main shaft 360° (one rotation of the main shaft) in the reverse rotation direction (2-5). 180 of the cycle where the weft insertion error occurred
”, and when this position is detected (2-6), the power supply to the auxiliary motor 34 is stopped and the electromagnetic brake 33 is excited to brake the L axis 30 (2-7).At the same time, the weft brake 47 is activated. Release the weft W from being held (2-
7) Due to the above operation, the miss yarn M is exposed on the fabric front (see A and B in Fig. 1O).

Next, as shown in FIG. 7, the electromagnetic clutch 57 is
Rotate the auxiliary motor 53 (3-1).

The weft yarn W is stored in the drum 43 for two times of weft insertion, and the related IE body 4
6 is removed from the drum 43, the auxiliary motor 58 is stopped (3-2) (see FIGS. 11A and 11B). After stopping the auxiliary motor 58, when air is injected from the main nozzle 25 (3-3), since the locking body 46 has been removed from the drum 43, the air injected from the main nozzle 25 causes the weft yarn W to is ejected into the opening of the warp Y in a substantially V-shape while remaining connected to the miss yarn M. Already in the am operation, the solenoid valve 72 is in the open state, and the current stop 1
1st place? ? At (1soo), the mechanical valve 73 is opened, and the tip of the ejected weft W is sucked by the weft suction device 70 (Fig. 12A, B).
By this suction from the side opposite to the weft insertion side, the misplaced yarn M is sequentially pulled off from the fabric front and extends straight from the main nozzle 25 to the introduction [I] of the weft suction device 70 (Fig. 13A, B).
(see), this jetting from the T nozzle 25 is carried out for a time of ↑ minutes until the miss thread M is torn off from the fabric. Incidentally, when the sensor detects that the misplaced thread M has been torn off from the fabric, the jetting from the first nozzle 25 may be stopped.

Next, the solenoid valve 65- is opened to operate the weft pulling device 63 (3-4). In this case, as shown in FIG. 15, air is injected from the first air passage 62 toward the second air passage 63, and the weft W is drawn toward the first air passage 63, causing a mistake. The weft W connected to the yarn M is pulled by a weft pulling device 60 and a weft suction device 70, and is stretched with a predetermined tension between them. When the solenoid valve 87 is opened in this state (3-5), the cutter device 80 is activated and the cutter 81 is moved to the weft pulling device 60.
The cutter 81 advances to the vicinity of the downstream side and cuts the weft W located on the fifth stream side. Then, the cut weft W
is sucked by the weft suction device 70 and discarded into the mesh basket 66 (see FIGS. 14A and 14B and FIG. 16).

In this case, since air is being injected from the main nozzle 25,
The jet air collides with the fixed blades 81a and ii (moving blades 81b) of the cutter 81, creating a turbulent flow. Even if the weft W is swayed by this turbulence, the As shown in Fig. 16, the weft traction device 6
Since the weft yarn W is drawn in at zero, it is under tension and hardly swings, so the cutter 81
The situation where the weft W escapes from the opening 81c is prevented 11, and the weft W is reliably cut.

Furthermore, even if air is not injected from the main nozzle 25, the weft W on the main nozzle 25 side after cutting is drawn into the second air passage 63 of the weft traction device 60, as shown in FIG. Therefore, a situation in which the main nozzle 25 is pulled out due to reaction after cutting is prevented. Then, by closing the solenoid valve 65, the cutter 81 is returned to the retracted position and the injection from the main nozzle 25 is stopped (3-6).

After that, the electromagnetic brake 33 is released and the main shaft 30 is rotated 2400 degrees in reverse by the auxiliary motor 34 (3-7).
, 300 of the previous cycle in which the weft insertion error occurred with the main spindle 30.
° (loom starting position) (3-8), stops power supply to the auxiliary motor 34]- and excites the electromagnetic brake 33 to stop the main shaft 30]- (3-9) (17th
(See Figures A and B).

Next, with the solenoid valve 65 open, the auxiliary motor 58 is rotated to start storing the weft yarn W in the drum 43 (3-10), and the rotation angle of the driven shaft 52 is 30
At a point beyond 0°, the proximity switch 59 is turned on. At this timing -r (3-11), the solenoid valve 55 is closed (3-12). Due to this valve closing, the air actuator 56 is operated and the one-position clutch 53 is brought into a connectable state. However, since the one-position clutch 53 is only connected at 300", the driven shaft 52 is rotated further and the one-position clutch 53 is connected at the next 300".Then, the auxiliary motor 58 is connected to the machine on the main shaft 30 side. Immediately after this, the electromagnetic clutch 57 is set to 0FFL.
The motor is brought into a released state, and power supply to the auxiliary motor 58 is stopped (3-13).

- On the other hand, the locking bodies 45 and 46 engage and leave the drum 43 at predetermined timing, and when the locking body 46 leaves, the weft W is ejected from the main nozzle 25, but The weft W is sucked in by the weft pulling device 60 and is waiting in a tensioned state.

Thereafter, the weft W between the day nozzle 25 and the weft pulling device 60 is cut by the cutter lO1 (3-14).

Then, as shown in Figure 8, close the solenoid valve 65 (4-1) to prepare for weft insertion (see Figure 18).
Also, the state is set in such a state that the scissor cutting operation by the cutter 100 is possible (4-2). Then, the center of gravity brake 33 is released (4-3), and the control device 120 enters the state of monitoring the start preparation switch 121 in step (1-1) in FIG. In this state, the loom is in a restartable state y8. In the above embodiment, the weft traction device 60 is
Although the weft W is cut by the cutter 80 near the flow side of the slightly drawn fabric, the cutter 80 is not necessarily limited to this, and it may be cut near the flow side of the pulling section. In this case, it is preferable to cut the weft yarn W while jetting air from the main nozzle to prevent the weft W from coming out from the main nozzle 25 due to reaction.

〔Effect of the invention〕

As explained above, according to the weft thread removal method of the present invention, the weft threads connected to the miss threads are not pulled out from the fluid jet nozzle and can be reliably cut, so that there is no problem in restarting the loom. I can do it! Can defend against double attacks.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of the configuration of an air injection loom for carrying out the present invention, and Fig. 2 (a), (b), (c), and (d) show the structure and installation of the weft traction device. 3 is a front view showing the structure of the cutter device, 4 is a timing chart of each part based on the rotation angle of the main shaft, Figures 5 to 8 are diagrams showing the le 1m device c7) J'170-, Figures 9 to 18 are diagrams showing the process of removing misplaced threads when a weft insertion error occurs, and Figure 19 is a diagram showing the conventional Figures 20 and 21 are diagrams showing an example of an air injection loom implementing a weft removal method, and Figures 20 and 21 are views showing an air injection loom implementing a weft removal method according to a prior example that solves the conventional problems. be. W...Weft M...Missed thread 10.25...T nozzle (fluid injection nozzle) 30...
・Main shaft 40...Weft supply unit 50...Drive device 60...Weft pulling device 70...Weft suction device 80...Cutter device 81...Cutter 110...Weft detector 120 ...Control device Fig. 8 Fig. 15 - Fig. 16 *t9 Fig. 20

Claims (1)

[Claims] The weft yarn (
When a weft insertion error occurs when weft insertion is performed by injecting thread W), after beating the error yarn (M), the loom is stopped while it is connected to the fluid injection nozzle (25), and then In the weft removal method in which the misplaced yarn (M) is exposed to the fabric front (C1) and removed, the weft is removed to the opposite weft insertion side with the miss yarn (M) exposed to the fabric front (C1). (
W) is injected, the injected weft (W) is sucked from the opposite weft entry side, the weft is pulled on the downstream side of the fluid injection nozzle (25), and then the weft (W) is pulled in the vicinity of this pulling section. ) by cutting the weft (W)
A method for removing weft threads in a fluid injection type loom, which removes misplaced threads (M) connected to the loom.