JPH0731879U - Weft insertion defective yarn removing device for fluid jet loom - Google Patents

Abstract

(57) [Summary] [Purpose] When removing defective weft-inserted yarn that is continuous from the tip of the weft-insertion nozzle in the warp row by winding it up on the drum, the entanglement caused by the bouncing of the defective weft-insertion yarn that is out of the warp constraint is removed. To prevent. Also, by changing the pulling speed during winding,
Make sure to remove it from the cloth fell. [Structure] The drum 20 is fixedly arranged at a predetermined position on the front end side of the weft insertion nozzle 2 and close to the defective weft insertion yarn. The winding arm 28 (claw portion 30) rotates around the drum 20 and engages with the defective weft insertion yarn, and then winds it around the drum 20 while guiding it and pulls it out of the warp yarn row. Here, on the warp row side of the winding arm 28, a baffle plate 56 for receiving the bouncing weft insertion defective thread is provided. In addition, the weft insertion defective yarn is guided by the concave portion 57 at the edge of the baffle plate 56 which is offset from the center of rotation of the winding arm 28, and the pulling speed is changed. Further, the weft inserting nozzle 2 is covered by the overhanging portion 32 which is continuous with the base portion 29 of the winding arm 28 within a predetermined rotation range.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a defective weft insertion yarn removing device for a fluid jet loom that removes defective weft insertion yarns connected to the warp yarn row from the tip of the weft insertion nozzle after a weft insertion defect occurs.

[0002]

[Prior art]

 When a fluid injection type loom detects a weft insertion failure during weft insertion, it prevents the cutter from cutting the weft thread at the tip of the weft insertion nozzle, and prevents the next weft insertion. To stop. Then, the main shaft of the loom is reversed to open the warp yarns to expose the defective weft-insertion yarns connected to the warp row from the tip of the weft insertion nozzle to the weft. Therefore, from this state, it is necessary to pull out and remove the defective weft insertion yarn from the warp row.

As a weft-insertion defective yarn removing device for this purpose, for example, the devices described in JP-A-62-177258 and JP-A-63-21957 are known. In this device, a winding pin is projected in the radial direction from a rotating drum arranged at a predetermined position between the tip of the weft inserting nozzle and the warp yarn row, and the winding pin catches the defective weft inserting yarn. By winding the weft insertion defective yarn from the warp row and the weft drawn from the weft accumulating device side through the weft insertion nozzle on the right and left drum surfaces of the winding pin, the weft insertion defective thread is placed in the warp row. Pull out from. After winding the defective weft insertion yarn, the yarn on the drum is cut by a cutter arranged in the drum, and the cut yarn is removed by suction with a suction pipe connected to the suction cover that covers the drum. ing.

[0004]

[Problems to be solved by the device]

 However, in such a conventional weft-insertion-defective yarn removing device, as the weft-insertion-defective yarn is wound on the drum, the tension of the weft-insertion-defective yarn, which is constrained by the warp, increases, and the weft-insertion-defective yarn becomes the warp yarn. If it is suddenly released from the restraint, the tension will drop sharply, and as a result, it will bounce back to the side of the drum, which is the pulling side, and it will become entangled with the drum and the weft-insertion nozzle, making it impossible to properly wind the defective weft-insertion yarn around the drum. Therefore, there is a problem that the defective weft insertion yarn cannot be removed.

Further, when the defective weft-insertion yarn is pulled out from the warp yarn row, the yarn is continuously pulled at an almost constant pulling speed, so that the yarn is not always sufficiently peeled off from the warp yarn. Due to continuous application of excessive force, defective weft insertion may cause thread breakage, making removal difficult, or instead of causing poor weft insertion thread breakage, warp breakage may occur. There was also the problem that troublesome repair work may be necessary.

In view of the above-mentioned conventional problems, the present invention entangles with a drum or the like even if a weft-insertion defective yarn in which the tension is drastically lowered due to the warp being unconstrained is rebounded toward the pulling side. The first purpose is to prevent the above. Also, when pulling out a defective weft insertion yarn from the warp row, the pulling speed is changed to ensure that the yarn is removed from the warp yarn (textile), so that the defective weft insertion yarn or warp yarn breakage can be prevented. The second purpose is to enable prevention.

A third object of the present invention is to effectively prevent the weft insertion nozzle from being entangled due to the bouncing of the defective weft insertion yarn.

[0008]

[Means for Solving the Problems]

 According to the present invention, the winding arm that rotates across the defective weft insertion yarn between the weft insertion nozzle and the warp row and the defective weft insertion thread that is pulled out from the warp row by the winding arm are wound. Device for removing defective weft yarn of fluid jet loom including drum, cutter for cutting defective weft yarn wound on the drum, and removing means for removing defective yarn for weft insertion cut by the cutter In order to achieve the first object, the baffle plate is arranged between the drum and the warp row.

In order to achieve the above-mentioned second object, a guide portion for guiding a defective weft-inserting yarn from the warp yarn row is formed at an edge of the baffle plate which is offset from the center of rotation of the winding arm. It is a composition. Furthermore, in order to achieve the third object, the base of the winding arm on the center of rotation side is located between the drum and the baffle plate, and is connected to the base to rotate the winding arm within a predetermined rotation range. The cover is formed to cover the weft inserting nozzle when viewed from the weft inserting side.

[0010]

[Action]

 In the above configuration, the defective weft insertion yarn is wound around the drum while being pulled out from the warp yarn row by the winding arm that rotates so as to traverse the defective weft insertion yarn between the weft insertion nozzle and the warp yarn row. If the defective weft insertion yarn suddenly comes out of the warp restraint during winding of the defective weft insertion yarn, the tension of the defective weft insertion yarn will suddenly decrease and will bounce to the pulling side and become entangled with the drum. Although there is a risk, it is possible to prevent entanglement with the drum etc. by disposing a baffle between the drum and the warp row, and receiving the wefted defective yarn that has bounced back by the baffle.

[0011] Further, by guiding the weft-insertion defective yarn that is pulled out from the warp row by the guide portion formed on the edge of the baffle plate which is deviated from the rotation center of the winding arm, the winding arm can be rotated to the rotating position. As a result, the distance from the guide portion at the edge of the baffle plate to the winding arm changes, which changes the pulling speed of the defective weft insertion yarn. Therefore, the defective weft-insertion yarn can be pulled intermittently by increasing or decreasing the pulling force, so that the worker can pull the defective weft-insertion yarn as if pulling it off the weaving cloth. It is possible to ensure the removal of the defective weft insertion yarn.

Further, the base portion on the rotation center side of the winding arm is located between the drum and the baffle plate, and is connected to this base portion in a predetermined rotation range of the winding arm as seen from the side of the weft inserting side. By forming a cover that covers the nozzle, it is possible to prevent entanglement of the weft insertion nozzle due to rebound of the defective weft insertion yarn. Especially when changing the pulling speed of a defective weft-insertion yarn, if the defective weft-insertion yarn suddenly comes out of the warp constraint when the pulling speed increases, the tension of the defective weft-insertion yarn decreases more rapidly and rebounds. However, the cover may cover the weft inserting nozzle at this time.

The defective weft-insertion yarn wound around the drum is cut by a cutter, removed by a removing means, and discharged out of the system.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the loom seen from the weft insertion side during normal operation, and FIG. 2 is a side view of the loom seen from the weft insertion side when removing defective weft insertion yarns. 1 and 2, 1 is a weft insertion side frame of a loom, 2 is a weft insertion nozzle (for example, a water jet nozzle), 3 is a heddle, 4 is a warp yarn, 5 is a reed, 6 is a cloth weave, and 7 is a woven cloth. Is shown.

A bracket 11 is fixed to the upper end of a column 10 standing on the upper surface of the weft insertion side frame 1 of the loom, and a rotary shaft 12 is supported by the bracket 11 so as to be capable of reciprocating angular movement. Then, a bevel gear (not shown) fixed to the tip of the output shaft of the forward / reverse rotatable motor 13 held by the bracket 11 and a bevel gear (not shown) fixed to the rotating shaft 12 are provided. By engaging with each other, the rotating shaft 12 makes a reciprocating angular motion by the forward / reverse rotation of the motor 13. The base end of the swing arm 14 is fixed to the rotary shaft 12 so that the swing arm 14 swings when the motor 13 rotates forward and backward.

A device unit 15 which is a main part of the weft insertion failure yarn removing device is held on the tip end side of the swing arm 14, and the swing arm 14 swings upward as shown in FIG. 1 during normal operation. While the machine unit 15 is retracted above the weaving machine by the movement, when removing the defective weft insertion yarn, the machine arm 15 is swung downward as shown in FIG. It is designed to be brought to a position. FIG. 3 shows a side view of the main part (apparatus unit 15) of the weft-insertion yarn removing device when the defective weft-inserting yarn is removed, as seen from the side opposite to the weft-inserting side.

Reference numeral 16 denotes a lamp, which is turned on when the swing arm 14 swings downward and the apparatus unit 15 is moved to the weft insertion position and brought to the defective yarn removal position, whereby the weft insertion defective yarn is removed. It informs that it is inside. Next, the device unit 15 which is a main part of the weft insertion defective yarn removing device will be described with reference to FIGS. 4 to 10 in addition to FIGS.

FIG. 4 is a front view of the device unit 15 corresponding to the view of the arrow A in FIG. 3, FIG. 5 is a horizontal cross-sectional view corresponding to the cross-sectional view taken along the line BB of FIG. 4, and FIG. FIG. 7 is a side view corresponding to the DD sectional view of FIG. 4, FIG. 8 is a side view corresponding to the EE sectional view of FIG. 4, and FIG. It is a side view corresponding to the FF sectional view of FIG. However, in FIG. 4, the rotational position of the winding arm 28, which will be described later, is different from the other figures. Further, FIG. 10 is a side view of the device unit 15 when viewed from the side of the reverse weft insertion with the winding arm 28 rotated, which is different from that of FIG.

As shown in FIG. 5, the device unit 15 includes a base plate 17 fixed to the tip of the swing arm 14, a bracket 18 fixed to the front of the base plate 17, and a bracket 18 fixed to the rear of the base plate 17. The drum 20 is fixed to the side of the base plate 17 and the bracket 18 on the weft insertion side. Here, the drum 20 is fixed so that its axis is parallel to and above the defective weft insertion yarn between the weft insertion nozzle 2 and the four rows of warp yarns (near the tip of the weft insertion nozzle 2). (See Figure 4).

The drum 20 has a peripheral groove 21 having a V-shaped cross section on the outer peripheral surface thereof. The bottom portion of the peripheral groove 21 on the upper side of the drum 20 is cut out to form a deep groove portion 22 (see FIG. 8), which is a substantially semicircular groove as a whole. A plurality of pins 23 are planted along the arcuate bottom of the V-shaped circumferential groove 21 and slightly outward of the bottom so as to cross the V-shaped circumferential groove 21 at appropriate intervals. The bad weft insertion yarn is wound around these pins 23. Further, a plurality of ribs 24 are radially formed on the side surface of the circumferential groove 21 having a V-shaped cross section on the side of the winding arm 28 described later (see FIG. 9) so as to form a convex portion.

A rotary shaft 25 is provided so as to penetrate the center of the drum 20, and the rotary shaft 25 is rotatably supported by bearings 26 and 27 provided on both sides of the bracket 18. The winding arm 28 is fixed to the end of the rotary shaft 25 protruding outside the drum 20. The winding arm 28 bends the peripheral edge of a disk-shaped base portion 29 attached to the end of the rotary shaft 25 toward the drum 20 side so as to cover the drum 20, and a winding direction from a part thereof. With the shape in which the claw portion 30 is projected obliquely in the counterclockwise rotation direction, the claw portion 30 is inserted between the weft insertion nozzle 2 and the four warp threads (near the tip of the weft insertion nozzle 2). After engaging with the defective yarn, the concave portion 31 formed by the base portion 29 and the claw portion 30 guides the defective weft-inserting yarn. Further, the base portion 29 is not a perfect circular shape, and a portion (32) on the upstream side in the winding direction from the protruding position of the claw portion 30 is largely overhanged so that the main nozzle 2 can be rotated within a predetermined rotation range of the winding arm 28. It is a cover that covers the tip side of the (see Fig. 10).

The drive mechanism of the winding arm 28 (rotary shaft 25) will be described. As shown in FIG. 5, a bevel gear 34 is fixed to an output shaft 33 of a motor 19 capable of rotating in the forward and reverse directions. By engaging the gear 34 with the bevel gear 35 fixed to the rotating shaft 25 of the winding arm 28, the winding arm 28 can be rotated in the winding direction by the forward rotation of the motor 19. Further, a work piece 36 is attached to the rotary shaft 25, and its position is detected by a proximity switch 37, so that the rotation speed and the stop phase of the winding arm 28 can be controlled.

Further, as shown in FIGS. 6 and 8, the drum 20 is provided with a cutter storage space 38 having a rectangular cross section at a portion eccentric from the center thereof. The cutter storage space 38 is located in the space 38. Has been placed. The cutter 39 is composed of a fixed blade 41 fixed in the drum 20 by a screw 40 and a movable blade 43 that can rotate the rotation of a pin 42, and is sandwiched by the swinging of an arm portion 44 connected to the movable blade 43. Exercise is done. Here, the fixed blade 41 and the movable blade 43 face each other across the deep groove portion 22 in the open state, and when the movable blade 43 moves to the fixed blade 41 side, the fixed blade 41 is wound around the pin 23 to be deep groove portion 22. It is possible to cut the defective weft insertion thread that is threaded through.

Explaining the drive mechanism of the cutter 39, as shown in FIGS. 5 and 6, a one-way clutch 45 is attached to the boss portion of the bevel gear 34 fixed to the output shaft 33 of the motor 19 capable of rotating in the forward and reverse directions. An eccentric cam 46 is attached via the. The one-way clutch 45 includes a notch 47 formed on the outer peripheral surface of the boss portion of the bevel gear 34 and a leaf spring 49 protruding from the notch 48 formed on the inner peripheral surface of the eccentric cam 46. When the bevel gear 34 rotates clockwise in FIG. 6 during normal rotation of the rotor 19, the leaf spring 49 is bent in the notch 48 on the eccentric cam 46 side, and the rotation of the bevel gear 34 is changed. Although not transmitted to 46, when the bevel gear 34 rotates counterclockwise in FIG. 6 when the motor 19 rotates in the reverse direction, the leaf spring 49 engages with the notch 47 on the bevel gear 34 side, and the bevel gear 34 is engaged. The rotation of the gear 34 is transmitted to the eccentric cam 46.

Then, one end of the connecting rod 50 is rotatably attached to the eccentric cam 46 by fitting it to the outer periphery thereof, and the other end of the connecting rod 50 is connected to the arm portion 44 of the movable blade 43 by the pin 51. There is. Further, a return spring 52 acts on the connecting rod 50 to regulate the position of the eccentric cam 46 when the eccentric cam 46 receives no driving force, and the movable blade 43 is opened at this time.

Further, as shown in FIG. 8, a suction pipe 53 as a removing means is provided by being fixed to the swing arm 14, and the tip side thereof is flattened to form the suction port 54 and the peripheral groove of the drum 20. Inside 21, it faces the cutter 39 and is downstream of the cutter 39 in the winding direction. A flexible pipe 55 is connected to the base end side of the suction pipe 53 as shown in FIGS. 1 and 2, and is connected to a suction port of a blower (not shown). As the blower, for a water jet loom, a dewatering cylinder for dewatering a woven fabric can be used.

Further, as shown in FIGS. 3 and 5, a baffle plate 56 that covers the winding arms 28 and the drum 20 is arranged at a position closer to the four-row side than the winding arms 28. Here, the baffle plate 56 is bent at its base end side into an L-shape and fixed together with the motor 19. The lower edge of the baffle plate 56 is located below the center of rotation of the winding arm 28, and extends to a position where only the weft inserting nozzle 2 can be seen when viewed from the reverse weft entering side. In addition, the guide position of the defective weft-insertion yarn, which is guided along the edge of the weft-insertion-defective yarn at the time of winding the weft-insertion-defective yarn, is restricted on the non-weaving front side (right side in FIG. 3) of the lower edge of the baffle plate 56. Therefore, a recess 57 is provided as a guide. Then, the section 59 of the limit switch 58 attached to the back side of the baffle plate 56 is positioned so as to close the recess 57, and the defective weft insertion thread guided by the recess 57 is brought into contact with the section 59, and When overtension is generated in the limit switch 58, the limit switch 58 is turned on due to an increase in the displacement amount of the segment 59.

The overhanging portion (cover) 32 of the base portion 29 of the winding arm 28 reaches the uppermost position from the lowermost position where the claw portion 30 of the winding arm 28 is wefted and passes in front of the nozzle 2. Until then, as shown in FIG. 10, it projects downward from the lower edge of the baffle plate 56 and covers the front end side of the weft inserting nozzle 2 when viewed from the side opposite to the weft inserting side. Next, the weft insertion defective yarn removing operation will be described.

When the occurrence of weft insertion failure is detected during weft insertion during normal operation of the loom, the weft cutter is prevented from being cut by a weaving cutter (not shown) at the tip side of the weft insertion nozzle 2, and Block the weft insertion and stop the loom. Then, the main shaft of the loom is reversed to open the warp yarns 4 to expose the weft-defective yarns which are continuous from the tip of the weft insertion nozzle 2 in the four rows of warp yarns to the cloth fell 6. The weft gripping device 8 (see FIG. 4) on the yarn supplying side of the weft insertion nozzle 2 is closed so that the weft is not pulled out from the weft accumulating device side. However, in order to prevent the defective weft insertion yarn from coming off from the winding arm 28, the weft holding device 8 is opened before winding and the fluid is jetted from the weft insertion nozzle 2 for a predetermined time, so that the weft storage device is released. Alternatively, one roll may be jetted into the warp opening.

Thereafter, the swing arm 14 is swung downward by the motor 13 to bring the device unit 15 to a position directly above the weft inserting nozzle 2, whereby the drum 20 is moved to the weft inserting nozzle 2 and the four warp threads. And (above the leading edge of the weft insertion nozzle 2) above the defective weft insertion yarn. At this time, the lamp 16 is turned on to inform that the defective weft insertion yarn is being removed. Further, at this time, the tip end of the claw portion 30 is pushed down the weft-insertion defective yarn, and the tip portion of the claw portion 30 is regulated so as to be removed from above the weft inserting nozzle 2 so that the claw portion 30 cannot be engaged. There is.

From this state, first, the motor 19 is rotated in the forward direction, and the output shaft 33 drives the rotating shaft 25 via the bevel gears 34 and 35, whereby the winding arm is rotated counterclockwise in FIG. Rotate 28. Even if the bevel gear 34 rotates, at this time, the eccentric cam 46 does not rotate and the cutter 39 is kept open due to the directionality of the one-way clutch 45. By the rotation of the winding arm 28, first, the claw portion 30 of the winding arm 28 is engaged with the defective weft insertion yarn between the weft insertion nozzle 2 and the four warp yarns, and the concave portion 31 between the claw portion 30 and the base portion 29 is formed. We will be able to get the wrong weft insertion thread in mind.

On the weft inserting nozzle 2 side, since the weft grasping device 8 (see FIG. 4) grasps the weft, the winding arm 28 rotates to pull out the defective weft inserting yarn from the four warp yarn rows. The defective weft insertion yarn is wound around the circumferential groove 21 of the drum 20 with the tip of the weft insertion nozzle 2 as a base point. At this time, the weft-insertion defective yarn wound around the circumferential groove 21 of the drum 20 by the rotation of the winding arm 28 descends along the rib 24 on the side surface when entering the circumferential groove 21 of the drum 20, Finally, it is wound around the pin 23. Therefore, not only the bottom surface side of the winding part is floated by the pin 23 but also the side surface side is also floated by the rib 24, so that the contact area is small even if the weft insertion defective yarn is wet with weft insertion water. Since there are few, sticking can be prevented. This facilitates suction removal, which will be described later.

In addition, the defective weft insertion yarn that is pulled out from the four rows of warp yarns is guided by the lower edge of the baffle plate 56 and passes through the concave portion 57, but the concave portion 57 as the guide portion is used. Since the winding arm 28 is displaced downward from the center of rotation, the distance from the concave portion 57 as the guide portion to the winding arm 28 (concave 31) changes depending on the rotation position of the winding arm 28, which The pulling speed of the defective thread changes. That is, the pulling speed of the defective weft insertion yarn becomes the minimum in a section of about 90 ° upstream of the lowermost position where the claw portion 30 of the winding arm 28 passes in front of the weft insertion nozzle 2 and thereafter. The traction speed increases until it reaches the uppermost position, and decreases when returning from the uppermost position to the lowermost position. Therefore, since the weft insertion defective yarn can be pulled intermittently by varying the pulling force, the yarn can be reliably peeled off from the warp yarn 4.

In addition, when the weft insertion defective yarn is overtensioned for some reason, the weft insertion defective yarn increases the displacement amount of the segment 59 of the limit switch 58 in the concave portion 57 of the baffle plate 56. The limit switch 58 is turned on. Therefore, when the limit switch 58 is turned on, the rotation of the motor 19 is stopped, the weft insertion defective yarn removing operation is interrupted, and this is notified.

When the defective weft-insertion yarn is suddenly separated from the restraint of the warp yarn 4 during winding of the defective weft-insertion yarn, the tension of the defective weft-insertion yarn is drastically lowered and the winding arm 28 side is closed. There is a risk of bounces and entanglement with the winding arm 28 or the drum 20, but by arranging the baffle 56 between the winding arm 28 and the four rows of warp, and receiving the bounced defective weft insertion yarn by the baffle 56, It is possible to prevent the winding arm 28 and the drum 20 from being entangled with each other.

In addition, the pulling speed for the defective weft insertion yarn becomes the minimum in the section of about 90 ° upstream of the lowermost position where the claw portion 30 of the winding arm 28 passes in front of the weft insertion nozzle 2, and thereafter, the uppermost position. When the pulling speed increases until the position is reached, and the defective weft-insertion yarn suddenly separates from the restraint of the warp 4 at this increase, the tension of the defective weft-insertion yarn decreases more rapidly and the rebound increases. At this time, since the tip end side of the weft inserting nozzle 2 is covered by the overhanging portion (cover) 32 of the winding arm 28, it is possible to prevent entanglement with the weft inserting nozzle 2.

After the number of rotations of the winding arm 28 reaches a predetermined number of rotations, or when a sensor (not shown) detects that a defective weft insertion yarn has been pulled out from the warp row, the motor 19 is stopped. , Reverse this motor 19. Then, the eccentric cam 46 is rotationally driven via the one-way clutch 45 by the rotation of the bevel gear 34 due to the reverse rotation of the output shaft 33 of the motor 19. Then, the rotation of the eccentric cam 46 causes the movable blade 43 of the cutter 39 to swing through the connecting rod 50, and the pinching movement in cooperation with the fixed blade 41 is performed, so that the circumferential groove 21 of the drum 20 is moved. A plurality of weft insertion defective yarns, which are wound around the pin 23 a plurality of times inside and are passed through the deep groove portion 22, are collectively cut. In addition, the movable blade 43 is pinched and cut multiple times to ensure the cutting.

Further, since the drum 20 is fixed and the position of the cutter 39 does not change, the protruding length of the weft thread to be inserted next from the tip of the weft insertion nozzle 2 can also be defined by this cutting. During the cutting, the winding arm 28 rotates in the direction opposite to the winding direction due to the rotation of the bevel gear 34, but since the weft insertion defective yarn has already been wound around the drum 20, it only idles. Is.

Then, suction by the suction pipe 53 is started immediately before this cutting, and the defective weft-inserted yarn cut on the drum 20 is sucked from the suction port 54 and discharged to the outside of the system. Here, since the suction port 54 of the suction pipe 53 is arranged in the vicinity of the cutter 39 and on the downstream side of the cutter 39 in the winding direction, the suction is ensured even if the suction area is small. . On the other hand, when the suction port is arranged on the upstream side of the cutter in the winding direction, the defective weft insertion yarn shorter than the last one winding cannot be removed.

After cutting with the cutter 39, the motor 19 is stopped, but the motor 19 is stopped at a fixed position by a signal from the proximity switch 37, and the winding arm 28 and the cutter 39 are moved to a predetermined position (see FIG. 3). Stop). After that, the swing arm 14 is swung upward by the motor 13 to retract the device unit 15 above the loom. At this time, the lamp 16 is turned off.

As described above, the loom can be restarted. In the present embodiment, a fixed drum system, that is, a fixed drum 20 arranged at a predetermined position near at least the defective weft insertion yarn between the weft insertion nozzle 2 and the four warp threads when removing the defective weft insertion yarn is used. A system is used in which the circumference of the fixed drum 20 is rotated so as to traverse between the weft insertion nozzle 2 and the four rows of warp yarns and the winding arm 28 is wound around the fixed drum 20 while guiding the defective weft insertion yarn. As a result, compared to the rotary drum system described in the above publication, it is sufficient to remove only the defective weft insertion yarn, and there is an advantage that the weft yarn is pulled out from the weft yarn storage device side and wasted in a small amount.

In the rotary drum system described in the above publication, the winding pins protruding from the rotary drum wind the defective weft insertion yarn from the warp row and the weft yarn on the weft storage device side on the left and right drum surfaces thereof. This is because there is a problem in that the weft on the weft storage device side is wasted for about one pick. However, the present invention is not limited to the fixed drum system of this embodiment, but may be the rotary drum system described in the above publication, that is, the system in which the drum is rotated together with the winding arm.

[0043]

[Effect of device]

 As described above, according to the present invention, even if defective weft-insertion yarn rebounds toward the traction side when the weft-insertion defective yarn is unwound from the constraint of the warp when the yarn is wound around the drum, the tension drops sharply. Entanglement on the drum etc. can be prevented, and the winding on the drum becomes good, so that the defective weft insertion yarn can be reliably removed.

Further, when the weft-insertion defective yarn is pulled out from the warp yarn row, by changing the pulling speed, it is possible to ensure the peeling from the warp yarn. Further, it is possible to effectively prevent entanglement of the weft insertion nozzle due to the bouncing of the defective weft insertion yarn.

[Brief description of drawings]

FIG. 1 is a side view of a loom seen from the weft inserting side during normal operation, showing an embodiment of the present invention.

[Fig. 2] Side view of the loom seen from the weft inserting side when weft insertion defective yarn is removed

FIG. 3 is a side view of a main part of the defective weft insertion yarn removing device as viewed from the side opposite to the weft insertion side.

FIG. 4 is a front view of a main part corresponding to a view taken along arrow A in FIG.

5 is a horizontal cross-sectional view corresponding to the cross-sectional view taken along the line BB of FIG.

6 is a front vertical sectional view corresponding to the CC sectional view of FIG.

FIG. 7 is a side view corresponding to the DD sectional view of FIG. 4;

8 is a side view corresponding to the EE sectional view of FIG. 4;

9 is a side view corresponding to the FF sectional view of FIG. 4;

FIG. 10 is a side view of the main part of the weft insertion defective yarn removing device, which is different from that in FIG.

[Explanation of symbols]

 2 Weft insertion nozzle 4 Warp 14 Swing arm 15 Device unit 19 Motor 20 Drum 21 Circumferential groove 23 Pin 25 Rotating shaft 28 Winding arm 29 Base 30 Claw 31 Recess 32 Overhang (cover) 39 Cutter 53 Suction pipe 56 Baffle plate 57 recess (guide) 58 limit switch

Claims (3)

[Scope of utility model registration request] 1. A winding arm that rotates so as to traverse a defective weft insertion yarn between a weft insertion nozzle and a warp row, and a weft insertion defective thread pulled out from the warp row by this winding arm. In a weft insertion defective yarn removing device for a fluid jet loom, comprising a drum, a cutter for cutting the defective weft insertion yarn wound around the drum, and a removing unit for removing the defective weft insertion yarn cut by the cutter A device for removing a defective weft insertion yarn of a fluid jet loom, wherein a baffle plate is arranged between the drum and the warp row. 2. A fluid according to claim 1, wherein a guide portion for guiding a weft-insertion defective yarn from a warp yarn row is formed at an end edge of the baffle plate which is displaced from the center of rotation of the winding arm. Weft removal defective yarn removing device for jet loom. 3. A weft insertion base as seen from the anti-weft insertion side in a predetermined rotation range of the winding arm, wherein a base portion of the winding arm on the rotation center side is located between the drum and the baffle plate. 3. A device for removing defective weft insertion yarns for a fluid jet loom according to claim 1, wherein a cover for covering the nozzle is formed.