JPH0556984U - Weft processing device for fluid jet loom - Google Patents

Abstract

(57) [Abstract] [Purpose] In a fluid jet loom, when weft insertion failure occurs, the weft yarn should be delivered without fail, and
Prevents weft entanglement and yarn breakage, and improves removal performance. [Configuration] When weft insertion failure occurs, the weft cutting operation of the regular cutter 17 is prevented, and then the main nozzle 1 (or 2) and the warp W are sewn between the main nozzle 1 (or 2) and the warp W.
The weft yarn Y continuous to the suction pipe 22 with the arm 21.
When passing it to the suction hole 23 of the suction pipe 23, the weft Y is guided near the front of the suction hole 23 by driving the arm 21 in a direction including both the crossing component and the horizontal component.
Suction with the suction air flow. After that, the weft yarn Y that is connected to the main nozzle 1 or the suction hole 23 is cut, the weft yarn Y that is connected to the cloth fell 15 side is extracted from the cloth fell 15 side, and the extracted weft yarn Y is sucked out of the loom by the suction pipe 22. And then discharge.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a weft processing device for removing a weft when a weft insertion failure occurs in a fluid jet loom such as a water jet loom or an air jet loom.

[0002]

[Prior Art]

 An example of a weft processing device for a fluid jet loom of this type is disclosed in Japanese Patent Application Laid-Open No. 62-18 4146. This is as shown in FIG. That is, when weft insertion failure occurs, the weft Y is blown up into a substantially U-shape between the main nozzle 130 and the cloth fell 132 by the air flow ejected from the blow-up nozzle 131 arranged below the main nozzle 130. After being positioned in the space between the rotating body 134 and the winding body 135 in the winding device 133, the wind blown up by the air flow ejected from the blow nozzle 136 at the axial center of the winding body 13 5. The yarn Y is blown into the discharge hole 137 at the axial center of the rotating body 134. As a result, the weft Y does not shift from the position of the regular cutter 138 and is not cut, and remains connected from the main nozzle 130 to the cloth fell 132 side, and during this time, the loom automatically reverses after being stopped, The weft Y, which has been incompletely inserted in the weft while being connected to the main nozzle 130, is exposed to the cloth fell 132. Subsequently, as the winding body 135 is moved toward the rotating body 134 side, the tip of the frustoconical winding surface 139 of the winding body 135 is pressed against the fitting portion of the discharge hole 137 of the rotating body 134. Hold a part of the weft Y connected to the main nozzle 130, cut the weft Y connected to the main nozzle 130 side from the holding portion with a removing cutter 140, and then wind the rotary member 134 in rotation. The body 135 is driven to rotate, and the weft Y, which is not properly inserted into the winding surface 139 of the winding body 135, is removed from the cloth fell 132 side. After that, the winding body 135 is separated from the rotating body 134 as shown in the figure, the rotational driving of the rotating body 134 is stopped, and the winding body 135 is wound up by the air flow ejected from the blow nozzle 136. The weft Y is discharged into the yarn catching box 141 through a discharge hole 137 in the rotating body 134.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional example, the weft Y that is continuous from the main nozzle 130 to the weave 132 is blown up by the air flow ejected from the blow-up nozzle 131, so the weft Y that is blown up is blown up. The weft Y may not be retained by the rotating body 134 and the take-up body 135 because it may not be blown up to the gap between the rotating body 134 and the take-up body 135 by being separated from the air flow from the nozzle 130. There is. Further, since the weft Y is wound by the follower rotation of the winding body 135, the weft Y is formed in the space between the rotating body 134 and the winding body 135 by the air flow from the blowing nozzle 130. After being blown up, the winding body 135 is moved forward to be held by the rotating body 134 and the winding body 135, and while being wound on the winding surface 139 of the winding body 135, the winding body is wound. There is a possibility that it cannot be completely removed from the cloth fell 132 side by being entangled between 135 and the bearing member 142 that rotatably supports the wound body 135.

Therefore, the applicant of the present invention, when the weft insertion failure occurs, after blocking the weft cutting operation of the regular cutter, the weft thread continuing from the main nozzle to the weave side is passed by the arm to the suction hole of the suction pipe, and this arm is passed. We propose a weft processing device for a fluid jet loom that cuts the weft yarns connected to the main nozzle side and removes the weft yarns connected to the front side. However, when transferring the weft yarns from the main nozzle to the suction hole of the suction pipe by the arm, the arm secures the optimum position for the transfer to the suction hole of the suction pipe due to the layout around the main nozzle. It was found that if not done, delivery would fail unless the suction force of the suction pipe was increased. However, if the suction force of the suction pipe is increased, the weft may break due to the impact during suction.

Therefore, in the present invention, when weft insertion failure occurs, the weft insertion from the main nozzle to the suction hole of the suction pipe by the arm of the weft thread connected to the front side of the weave is ensured, and the weft insertion is ensured. The challenge is to improve the removal performance of defective wefts.

[0006]

[Means for Solving the Problems]

 In the first invention, when a weft insertion failure occurs, the weft cutting operation of the regular cutter is blocked, and then the weft thread continuing from the main nozzle to the weave side is transferred to the suction hole of the suction pipe by an arm, and from this arm. A weft processing device for a fluid jet loom that cuts the weft yarns connected to the nozzle side and removes the weft yarns connected to the weave side from the weave side, wherein the arm is a cross component from the main nozzle to the weft yarns connected to the weave side. And means for driving in a direction including both the horizontal component toward the suction hole side of the suction pipe and the horizontal component.

A second invention is, when a weft insertion failure occurs, after blocking the weft cutting operation of the regular cutter, the weft yarn continuing from the main nozzle to the weave side is transferred to the suction hole of the suction pipe by the arm, A weft processing device for a fluid jet loom that cuts the weft yarns connected to the main nozzle side from the arm and removes the weft yarns connected to the weave side from the weave side, wherein the arm intersects the weft yarns connected to the weave side from the main nozzle. There is provided means for driving the suction pipe of the suction pipe to the arm side.

[0008]

[Action]

 In the first invention, after the weft insertion failure occurs and the weft cutting operation of the regular cutter is blocked, the weft yarn that is continuous from the main nozzle to the weave between the main nozzle and the warp yarn is connected to the suction pipe by the arm. When delivering to the suction hole, by driving the arm in a direction that includes both the crossing component and the horizontal component, the weft thread that is connected to the arm from the main nozzle is guided to the vicinity of the suction pipe in front of the suction hole. Suction with suction air flow. After this, the weft yarns connected to the suction holes of the suction pipe are cut from the main nozzle, the weft yarns connected to the weaving side are extracted from the weaving side, and the extracted wefts are sucked out of the loom by the suction pipe and discharged.

In the second invention, after the weft insertion failure occurs and the weft cutting operation of the regular cutter is prevented, the weft yarns connected between the main nozzle and the warp before the weaving are formed in the arm between the main nozzle and the warp yarn. When transferring to the suction hole of the suction pipe, by driving the arm in the intersecting direction, the weft yarns connected to the arm from the main nozzle are guided in front of the suction hole of the suction pipe, and the suction hole of the suction pipe is moved to the arm side. Then, approach the weft and suck it with the suction airflow of the suction pipe. After this, the weft thread that is connected to the suction hole of the suction pipe is cut from the main nozzle, the weft thread that is connected to the weave side is extracted from the weave side, and the extracted weft thread is sucked out of the loom by the suction pipe and discharged.

[0010]

【Example】

 FIG. 1 shows the outer appearance of the fluid ejecting loom on the main nozzle side, which is equipped with a weft processing apparatus as a first embodiment.

The weaving machine shown in FIG. 1 is a water jet room having a plurality of main nozzles 1 and 2, and a plurality of wefts Y are provided corresponding to the main nozzles 1 and 2 and are not shown. From the weft measuring and storing device, a pair of upper and lower holding bodies 8 held by electromagnetic actuators 6 and 7 of a plurality of weft holding devices 4 and 5 mounted on the base plate 3 corresponding to the main nozzles 1 and 2. , 9, 10, 11 and then to the main nozzles 1, 2. Then, at the time of weft insertion, the weft holding device to be paired with the main nozzle 1 is formed by releasing the holding bodies 8 and 9 of the weft holding device 4 paired with the main nozzle 1 and water jet from the main nozzle 1. The weft Y of one side or the weft Y of the other side is alternately placed on the jet water flow for each preset number of picks by the releasing operation of the holding bodies 10 and 11 of No. 5 and the water jet from the main nozzle 2. And weft-insert into the warp opening 12. Following this weft insertion, the reeds 14 attached to the reed holding table 13 connected to the repulsion driving mechanism (not shown) perform the repulsion movement. By this beating operation, the weft yarn Y inserted in the warp yarn opening 12 is beaten at the cloth fell 15 and is crossed up and down with the warp yarn W to be woven into the woven fabric 16. Then, in the vicinity of the beating point, the common cutter 17 cuts the beated yarn Y between the main nozzle 1 or 2 and the cloth cloth 15. The weft insertion, beating, and cutting are sequentially repeated to woven the woven fabric 16. In FIG. 1, the front end of the main nozzle 1 located on the front side (the front side of the loom) is located on the opposite side of the warp W row from the front end of the other main nozzle 2. Due to the difference in the tip positions of the one main nozzle 1 and the other main nozzle 2, the weft Y to be wefted can be prevented from being entangled with the weft Y waiting for weft insertion.

As shown in FIG. 1 and FIG. 2, the weft processing device 20 causes the main nozzles 1 and 2 and the warp W to pass after the weft insertion failure occurs and the weft cutting operation of the common cutter 17 is blocked. In the meantime, the weft Y continuous from the main nozzle 1 or 2 to the weave 15 is guided near the front of the suction hole 23 of the suction pipe 22 by the arm 21, and the weft Y continuous from the main nozzle 1 or 2 to the arm 21 is The weft Y drawn from the main nozzle 1 or 2 to the suction hole 23 of the suction pipe 22 is cut by the suction cutter 22, and the weft Y connected to the suction hole 22 of the suction pipe 22 is cut by the removing cutter 24. The weft yarn Y held by the ripper 25 is pulled out from the cloth fell 15 side by the yarn pulling operation of the arm 21, and the pulled weft yarn Y is sucked by the suction pipe 2. The weft yarn sensor 26 detects the presence or absence of the weft yarn Y connected to the arm 21 from the main nozzle 1 or 2 at the suction pipe 22 while it is sucked out of the loom at 2 and discharged.

Specifically, the arm 21 includes a plate-shaped shield member 30. A V-shaped thread catching portion 31 is formed on the shielding member 30. The lower portion of the shield member 30 is connected to the support member 32 by a pin 33 so as to be rotatable in the suction hole 23 direction of the suction pipe 22 and in the warp W row direction. A single-acting spring type air cylinder 34 as an actuator is attached to the upper surface of the support member 32. The operating rod of the air cylinder 34 is rotatably connected by a pin 36 to a protrusion 35 provided on the lower portion of the shielding member 30. An operating rod of an air cylinder 37 as an actuator is fastened to the lower surface of the support member 32. These air cylinders 33, 37 are arranged so that the arm 21 moves in a direction including both a crossing component from the main nozzle 1 or 2 to the weft yarn Y connected to the cloth fell 15 side and a horizontal component toward the suction hole 23 side of the suction pipe 22. Constitutes a means for driving the. That is, when the air cylinder 34 is contractively driven and the shielding member 30 of the arm 21 is erected so as to be substantially orthogonal to the support member 32, the air cylinder 37 is driven to expand and contract, whereby the yarn catching portion 31 of the arm 21 moves. A diagram below the main nozzles 1 and 2 and above the suction holes 23 of the suction pipe 22 and a steady stop position (position deviating from the weft flying path from the main nozzles 1 and 2) shown by a chain line in FIG. 1 is moved up and down to the thread take-up position indicated by a phantom line, and while the shield member 30 of the arm 21 is standing up and stopped at the thread take-up position, the air cylinder 37 is driven to expand and contract to cause the shield member 30 of the arm 21 to move. However, with the pin 33 as the center, the standing position shown in phantom in FIG. 1 and the yarn delivery shown in solid line in FIG. 1 tilting toward the suction hole 23 side of the suction pipe 22. To swing and position.

The suction pipe 22 is incorporated around the main nozzles 1 and 2, specifically, in an apparatus main body 40 which is arranged above the main nozzles 1 and 2 with a space therebetween. The suction pipe 22 communicates with a suction hole 23 opened on the front surface of the apparatus body 40 on the arm 21 side. An injection port 41 shown in FIG. 2 is provided at an axially intermediate portion of the suction pipe 22. An air supply pipe 42, which is connected to a pressurized air supply source (not shown) and is attached to a rear surface of the apparatus body 40 located on the side opposite to the arm 21, is connected to the injection port 41. By injecting air into the suction pipe 22 toward the outlet side of the suction pipe 22, a suction airflow is generated in the suction holes 23 connected to the suction pipe 22, and a traction airflow is generated at the outlet side of the suction pipe 22. A discharge pipe 43 connected to a yarn catching device (not shown) is connected to an outlet side of the suction pipe 22 projecting from the rear surface of the device body 40. The apparatus body 40 is arranged such that the suction hole 23 is located in the middle of the main nozzles 1 and 2 when viewed from above.

The removal cutter 24 is arranged in a recessed surface portion 46 formed stepwise below the suction hole 23 on the front surface of the apparatus body 40, and is a single-acting actuator incorporated in the apparatus body 40. It is connected to an operating rod of a spring type air cylinder 47, and when the air cylinder 47 is driven to expand and contract, it scissors to cut the weft Y. Around the removal cutter 24, a protection member 50 and a guide member 51 are provided.

The protective member 50 and the guide member 51 are integrated as shown in FIGS. 1 and 3. Specifically, the protection member 50 includes a square plate-shaped substrate 52. As shown in FIGS. 3 (A) and 3 (D), a plurality of screw insertion holes 53 are formed at the rear end of the base plate 52. It is attached to the lower surface of the apparatus main body 40 with a screw 54 shown in FIG. As shown in FIGS. 3A to 3C, the left and right walls 55 and 56 are provided on the upper surface of the front end portion of the substrate 52, which protrudes toward the warp W row side of the apparatus body 40, and the removal cutter 24 is open. It stands upright with a facing gap that does not interfere with. The left and right walls 55 and 56 are arranged on both the left and right sides of the removal cutter 24 when the substrate 52 is attached to the apparatus body 40, and protect the fingers of the operator from the removal cutter 24. The guide member 51 is arranged around the left and right walls 55 and 56 of the substrate 52. That is, the guide member 51 includes the guide groove 57, the lower guide surface portion 58, and the front guide surface portion 59. As shown in FIGS. 3A to 3C, the guide groove 57 is a slit cut from the front end to the rear end of the substrate 52 located between the left and right walls 55 and 56 in a substantially U-shape in plan view. It has become. Wide-angle inclined guide surfaces 60 and 61 are formed at the left and right corners of the tip opening of the guide groove 57, which serves as a slit, for facilitating the weft Y to be drawn into the guide groove 57. As shown in FIGS. 3B to 3D, the lower guide surface portion 58 is formed in the lower half of the lower surface of the substrate 52 so as to bulge downward. Left and right slopes 63, 64 are formed so as to be gradually inclined downward from the center to the left and right. As shown in FIGS. 3 (A) to 3 (D), the front guide surface portion 59 guides from the left and right sides from the front end surface of the base plate 52 to the front end surfaces of the left and right walls 55 and 56 and the front end surface of the bulging portion 62. The left and right slopes 65 and 66 are gradually inclined toward the guide surfaces 60 and 61 of the groove 57. The guide groove 57, the lower guide surface portion 58, and the front guide surface portion 59 are removed from the main nozzle 1 or 2 of which the weft insertion has failed in the process of the arm 21 moving from the stationary stop position to the thread take-up position. First, the lower guide surface portion 58 and the front guide surface portion 59 guide the weft yarn Y connected to the yarn catching portion 31 of the arm 21 into the guide groove 57, and then the weft yarn Y is drawn into the guide groove 57 from the guide surfaces 60 and 61. As a result, the guide groove 57 allows the weft yarn Y to be provided between the blades of the open cutter 24. The weft yarn Y, which extends from the guide groove 57 to the yarn catching portion 31 of the arm 21, crosses the suction hole 23 vertically in front of the suction hole 23 of the device body 40.

The gripper 25 is provided with a pair of sandwiching bodies 69 and 70 made of synthetic resin or metal shown in FIG. The upper holding body 69 is fastened to an operating rod of a single-acting spring type air cylinder 71 as an actuator incorporated in the apparatus main body 40, and when the air cylinder 71 extends and contracts, the suction hole 23 is vertically crossed. The weft yarn Y sucked into the suction hole 23 is held and released by approaching and separating from the lower sandwiching body 70 exposed on the side surface of the suction hole 23.

The weft sensor 26 is attached to a protruding portion 72 that is formed so as to bulge above the suction hole 23 of the apparatus body 40. This weft sensor 26 is of a non-contact type such as a photoelectric reflection type. The detection action portion of the weft sensor 26 is exposed on the lower surface of the protrusion 72 that is inclined upward and detects the weft Y connected to the arm 21 from the suction hole 23. On the lower surface of the projecting portion 72, a cleaning groove 73 is formed which is continuous with the detecting portion of the weft sensor 26. One half of the cleaning groove 73 separated from the weft sensor 26 is covered with a lid 74 attached to the lower surface of the protrusion 72. The cleaning groove 73 covered with the lid 74 is connected to an air supply pipe 75 connected to a pressurized air supply source (not shown) and attached to the upper surface of the protrusion 72. The air is ejected from the side to the detection action portion of the weft sensor 26 in the lateral direction, and the dirt attached to the detection action portion of the weft sensor 26 is blown away to wash the detection action portion of the weft sensor 26. Further, a vertical groove 76 is formed above the weft sensor 26 at the corner between the lower surface and the upper surface of the protruding portion 72.

FIG. 4 shows the whole of a fluid jet loom equipped with the weft yarn treating apparatus 20 as the one embodiment. In FIG. 4, a plurality of main nozzles 1 and 2, a water supply system 77 for these main nozzles, weft gripping devices 4 and 5 provided corresponding to the main nozzles 1 and 2, and main nozzles 1 and 2 are provided. One of the weft measuring and storing device 83 and the yarn guides 89A and 89B provided corresponding to the main nozzles 1 and 2 is shown for the sake of simplicity.

In FIG. 4, the water supply system 77 of the main nozzle 1 supplies water stored in a constant water level tank 79 from a water source 78 such as tap water to a cam 80 and a link mechanism on a main shaft of a loom (not shown). The water pump 82, which is interlocked via 81, injects from the main nozzle 1 at a predetermined pressure and at a predetermined timing.

The weft measuring and storing device 83 includes a drum 84 held in a stationary state, a winding arm 85 rotatably driven by a motor (not shown), and a locking claw 87 driven by an electromagnetic actuator 86. The weft Y is drawn from the yarn supplying body 88 through the yarn guide 89A, the winding arm 85, the yarn guide 89B, and the weft gripping device 4 to the main nozzle 1 in order, and by the electromagnetic actuator 86 driven by the controller 90. The locking claw 87 is inserted into the peripheral surface of the drum 84, and the weft Y is locked by the locking claw 87 by the rotational driving of the winding arm 85 and wound around the peripheral surface of the drum 84 to store the length measurement. The weft insertion of the weft Y is performed by pulling out the locking claw 87 from the drum 84 at a predetermined nail pulling timing, and subsequently, by the releasing operation of the weft holding device 4 and the water jet of the main nozzle 1. ..

The control device 90 detects the detection signal from the weft arrival sensor 91 provided on the side of the warp W row opposite to the main nozzles 1 and 2 and the weft Y from the angle sensor (not shown) of the main shaft of the loom before weaving. By taking in the rotation angle signal with the repulsion that reaches 15 as 0 °, the weft Y is not properly wefted during the weft insertion period, and the weft arrival detection sensor 91 does not detect the weft Y When it is judged that weft insertion failure has occurred, a stop signal due to weft insertion failure is output, the cutting operation of the common cutter 17 is stopped, and the main shaft of the loom is stopped in forward rotation, reverse rotation drive, reverse rotation. The actuators of the weft gripping device 4 and the leak valve of the air supply system to the air cylinder 34 of the arm 21 of the weft processing device 20 are provided for the purpose of auto-starting. An on-off valve 92, a flow path switching valve 93 of an air supply system to the air cylinder 37 of the arm 21, an on-off valve 94 of an air supply system to the suction pipe 22, and an air cylinder 47 of the removal cutter 24 to the air cylinder 47. Open / close valve 95 having a leak valve for the air supply system, open / close valve 96 having a leak valve for the air supply system to the air cylinder 71 of the gripper 25, and opening / closing the air supply system to the air supply pipe 75 of the cleaning groove 73. While the valve 97 is driven according to a preset program, the weft yarn Y connected to the arm 21 from the main nozzle 1 in the suction pipe 22 is successfully sucked by the detection signal from the weft sensor 26 of the weft processing device 20. The completion of the withdrawal of the weft yarn Y from the cloth fell 15 side is monitored.

Reference numeral 98 in FIG. 4 is a heald.

Next, the weft insertion defective yarn removing operation of the first embodiment will be described with reference to the flow charts of FIGS. 5 and 6 and the state diagrams of FIGS. 7 to 11.

First, prior to the operation of the loom, the operator turns on or off the weft processing device switch (not shown) according to the fabric type. Specifically, the weft processing device switch is turned on when the product type is emphasized and is turned off when the operating rate is emphasized. Further, during normal operation of the loom, the arm 21 of the weft processing device 20 is stopped at the stationary stop position, and the grippers 69, 70 of the gripper 25 are in the releasing operation (separating operation).

On the other hand, when the operator turns on the main switch (not shown) of the loom, the control device 90 starts executing the process (step 101). Then, when the weft absence detection signal is input from the weft arrival sensor 91 to the control device 90 during the weft insertion period while the weft processing device switch is turned on, the function of the weft measurement storage device 83 is determined. The pawl 87 is inserted in the drum 84, and the control device 90 determines that a weft insertion failure has occurred and outputs a stop signal (step 103), and then determines the cause of the stop signal. When the stop signal is output by the warp breakage detection signal from the warp dropper (not shown) (NO in step 104), an error signal is output to the error indicator (not shown) to prepare for the warp breakage repair by the operator. Therefore, the subsequent weft processing is stopped (step 105). On the contrary, when the stop signal is output from the weft arrival sensor 91 as a weft-free detection signal (YES in step 104), the processing for removing the defective weft insertion yarn is started, and the weaving machine is in normal operation during inertia operation. While stopping the cutting operation of the cutter 17, the electromagnetic actuators 6 and 7 are operated to hold the weft holding devices 4 and 5 to prevent the weft insertion of the next pick, and to rotate the weaving machine spindle rotated 180 degrees by inertia. Is stopped at the rotation angle position, the on-off valve 97 is operated, and air is jetted from the cleaning groove 73 for a fixed time of about 1 or 2 seconds to wash the detection action portion of the weft sensor 26 with air (steps 106-). 108). In the forward rotation stop state at this rotation angle position of 180 °, as shown in step 107, the weft Y, which has been beaten in the warp opening when the weft insertion failure occurs, is placed above and below the warp W. While interlaced, the warp shed is almost maximal.

Subsequently, the control device 90 supplies light emission power to the weft thread sensor 26, and inspects whether the weft thread sensor 26 is dirty by an ON / OFF signal from the weft thread sensor 26 according to the amount of reflected light received. (Step 109). That is, when the weft yarn sensor 26 is in the photoelectric reflection type when there is no stain on the detecting portion of the weft yarn sensor 26 and it is normal, the amount of received light of the reflected light from the weft yarn sensor 26 is threshold. When the value is less than the value, the weft sensor 26 outputs an off signal, and conversely, when the wetting sensor 26 is in an abnormal state in which dirt is attached to the detection action portion, the amount of light received by the weft sensor 26 that is equal to or greater than the threshold value is detected. Then, the weft sensor 26 outputs an ON signal. Therefore, when the weft thread sensor 26 outputs the ON signal (NO in step 109), it means that the weft thread sensor 26 is dirty. Therefore, the control device 90 outputs an error signal to the error indicator and In order to prepare for the cleaning of the weft sensor 26 by a person, the subsequent weft processing is stopped (step 110).

On the contrary, when the weft sensor 26 outputs the off signal (YES in step 109), it means that the weft sensor 26 is normal. Therefore, the control device 90 causes the weaving machine spindle to rotate 180 °. Reverse rotation (primary reverse rotation inching) is performed at low speed to the angle stop position (step 111). When the main shaft of the loom stops at the primary reverse rotation stop position, as shown in step 111, the weft Y, which is inferior in weft insertion, is released from the intersection with the warp W and is exposed to the cloth fell 15.

Subsequently, the control device 90 drives the flow path switching valve 93 and the opening / closing valve 94 to raise and stop the arm 21 in the standing state from the steady stop position to the thread take-up position, and at the same time, the suction hole of the suction pipe 22. A suction airflow is generated at 23 (step 112). That is, when the arm 21 in the upright state is lifted, the weft yarn Y extending from the main nozzle 1 to the arm 21 is divided into the left and right slopes 64 and 65 which are the lower guide surface portion 58 of the guide member 51 and the left and right slopes 65 and 66 which are the front guide surface portions 59. It is guided while coming into contact, inserted into the guide groove 57 through the guide surfaces 60 and 61 of the protection member 50, and is positioned in front of the suction hole 23 through the gap between the blades of the open removal cutter 24. Then, when the arm 21 stops at the thread take-up position as shown by the phantom line in FIG. 7, the control device 90 drives the open / close valve 92 to move the arm 21 about the pin 33 and the thread take-up position shown by the phantom line in FIG. Inclination from the stand to the yarn delivery position shown by the solid line in FIG. 7 (step 113). As a result, the arm 21 approaches the suction hole 23 of the suction pipe 22, and the weft yarn Y connected to the yarn catching portion 31 of the arm 21 from the main nozzle 1 is inserted into the vertical groove 76 and the suction hole 23 of the suction pipe 22 is inserted. The weft Y, which is guided near the front of the suction hole 23 and is positioned near the front of the suction hole 23, is sucked into the suction hole 23 by the suction airflow of the suction pipe 22, as shown in FIG. At this time, in the state where the arm 21 is stopped at the guide position of the weft Y to the suction hole 23 (the same as the yarn take-up position and the yarn delivery position in the first embodiment), the shielding member 30 is located in front of the suction hole 23. Since they are arranged like a screen while being separated from each other, as shown in FIG. 8, when sucking the weft yarn Y which is continuous with the main nozzle 1 and the yarn catching portion 31 of the raised arm 21, the suction yarn 23 is sucked. Due to the barrier effect of the shielding member 30, the suction force of the tension pipe 22 does not act on the weft yarn Y connected to the weaving cloth 15 side from the yarn catching portion 31 of the arm 21, and the weft yarn Y on the weaving cloth 15 side is applied to the arm 21. Never get entangled in.

Subsequently, the control device 90 drives the open / close valve 92 to return the arm 21 from the yarn delivery position shown by the solid line in FIG. 8 to the yarn take-up position shown by the virtual line in FIG. After that, the control device 90 drives the flow path switching valve 93 to lower and stop the arm 21 from the thread take-up position to the steady stop position (steps 114 and 115). As shown in FIG. 9, the weft yarn Y slackened between the weaving cloth 15 and the weaving cloth 15 is drawn into the suction hole 23 by the suction force of the suction pipe 22.

After that, the control device 90 drives the open / close valves 95 and 96 to cut the weft yarn Y connected to the suction hole 23 from the main nozzle 1 by the removing cutter 24 and hold the weft yarn by the gripper 25 (step 116).

Then, again, the control device 90 drives the flow path switching valve 93 to raise and stop the arm 21 to the thread take-up position (step 117), and then the control device 90 moves from the suction hole 23 to the cloth fell 15 It is inspected whether the weft yarn Y connected to the side is broken (step 118). That is, the control device 90 supplies the light emission power to the weft thread sensor 26, determines whether the weft thread sensor 26 is in the ON operation, and when the weft thread sensor 26 is in the OFF operation (NO in step 118), the arm is turned on. Since the weft Y does not lift due to the rise of 21 and the weft Y is cut, an error signal is output to the error indicator and the subsequent weft processing is stopped in preparation for the weft processing by the operator ( Step 119). On the contrary, when the weft sensor 26 is on (YES in step 118), it means that the weft Y is lifted by the rise of the arm 21 and the weft Y is not broken. Therefore, the gripper 25 is moved to the air cylinder 72. A spring built in the arm moves the arm 21 downward and stops the arm 21 from the thread take-up position to the stationary stop position (step 120). The weft yarn Y which is loosened by the releasing operation of the gripper 25 and the lowering of the arm 21 is sucked by the suction force of the suction pipe 22.

Subsequent to the lowering of the arm 21, the control device 90 drives the opening / closing valve 96 and the flow path switching valve 93, and as shown in FIG. 10, the grippers 69 and 70 of the gripper 25 suck the suction holes. After holding the weft Y in 23, the arm 21 is lifted and stopped from the stationary stop position to the yarn take-up position, the weft Y is pulled out from the weft 15 side, and the number of times the arm 21 is lifted is counted (step 121). That is, by raising the arm 21 in the standing state while holding the weft Y with the gripper 25, as shown by the solid line in FIG. 11, the weft path between the suction hole 23 and the cloth fell 15 becomes longer, Y is pulled out from the cloth fell 15 side.

Then, following the ascent of the arm 21, the control device 90 supplies light emission power to the weft sensor 26, determines whether the weft sensor 26 is off, and the weft sensor 26 is on. If it is (step 122 is NO), it means that the weft Y is not completely pulled out from the cloth fell 15 side, so the control device 90 drives the open / close valve 96 and the flow path switching valve 93, The gripper 25 is released by the spring built in the air cylinder 71, and the arm 21 is lowered from the thread take-up position to the stationary stop position and stopped (step 123). This pulls from the cloth fell 15 shown by the solid line in FIG. The pulled-out weft yarn Y does not loosen as the arm 21 descends, and is sucked from the suction hole 23 by the suction force of the suction pipe 22 as shown by an imaginary line in FIG. It is sucked into the discharge pipe 43 through the suction pipe 22.

After that, the controller 90 determines whether the number of times the arm 21 is lifted counted in step 121 is 10 times or more as a reference number preset in the controller 90, and the counted number of lifts is counted. Is greater than the reference number (10 times) (YES in step 124), the weft Y is entangled with the warp W and cannot be pulled out, which means that the weft Y has failed to be removed. Therefore, an error signal is displayed on the error indicator. In order to prepare for the weft processing by the operator after outputting, the subsequent weft processing is stopped (step 125). On the contrary, when the counted number of times of rising is less than 10 (NO in step 124), the weft Y is not broken by the rising of the arm 21 at the previous step 121, but from the cloth fell 15 side. Since it means that the weft yarn Y is not completely pulled out, the control device 90 again drives the open / close valve 96 and the flow path switching valve 93 to hold the gripper 25 and raise the arm 21 to weave the weft yarn Y. Repeat pulling from the front 15 side. That is, when the weft sensor 26 is turned on in step 122, the combination of the holding operation of the gripper 25 and the raising of the arm 21 and the releasing operation of the gripper 25 are performed up to the counted number of times of ascent is 9. The combination with the lowering of the arm 21 is repeated.

If YES at step 122 and the weft yarn sensor 26 is off, the weft yarn Y is completely pulled out from the cloth fell 15 by the holding operation of the gripper 25 and the raising of the arm 21. This means that the control device 90 drives the open / close valve 96 and the flow path switching valve 93 to lower and stop the arm 21 to the steady stop position and release the gripper 25 (step 126). As a result, the weft yarn Y is discharged from the suction hole 23 to the outside of the machine through the holding bodies 69 and 70 of the gripper 25 which are separated from each other, the suction pipe 22 and the discharge pipe 43.

Subsequently, the control device 90 drives the opening / closing valve 94 to stop the suction of the suction pipe 22, and reverses the loom main shaft at a low rotational angle position of 180 ° (secondary reverse inching) and re-executes. After the start is announced (step 127), the ready button (not shown) of the loom is automatically turned on (step 128), and the run button (not shown) of the loom is automatically turned on (step 129). As a result, one cycle of the process for removing the weft yarn Y that has become defective in weft insertion is completed, and as shown in FIG. 4, the weaving operation of the loom is automatically restarted (auto start) (step 130).

In short, in the fluid jet loom including the plurality of main nozzles 1 and 2 as in the first embodiment, the weft insertion failure from the main nozzle 1 and the weft insertion failure from the main nozzle 2 are different. When the weft Y is transferred to the suction hole 23 of the suction pipe 22 by the arm 21, the main nozzles 1 and 2 are arranged at different positions. By tilting the weft toward the suction hole 23 side, the weft yarn Y connected to the arm 21 from the main nozzle 1 or 2 is brought closer to the front of the suction hole 23, and the weft yarn Y is reliably delivered.

Second Embodiment FIG. 12 shows a weft processing device as a second embodiment. In the second embodiment, the same parts as those in the first embodiment are designated by the same reference numerals.

In the second embodiment shown in FIG. 12, a withdrawal arm 12A provided with a shielding member 30 that can be raised and lowered in an intersecting direction that is substantially orthogonal to the weft Y that is continuous from the main nozzle 1 to the weave 15 side. , A guide arm 101 that swings up and down around the support shaft 100, and when a weft insertion failure occurs, first, rotate the guide arm 101 upward from a steady stop position shown by a solid line. Thus, the weft yarn Y that is continuous from the main nozzle 1 to the cloth fell 15 (see FIG. 1) side is guided near the front of the suction hole 23. Then, after the weft Y is sucked into the suction hole 23 by the suction force of the suction pipe 22 as shown by the alternate long and short dash line (after guiding the weft Y to the vicinity of the front of the suction hole 23 by the guide arm 101), The guide arm 101 is returned to the stationary stop position and stopped. Next, the removal cutter 24 cuts the weft yarn Y extending from the main nozzle 1 to the suction hole 23 side, and holds the cut weft yarn Y side on the cloth fell 15 side by the grippers 69, 70 of the gripper 25. After that, the shielding member 30 is raised from the steady stop position shown by the solid line to the yarn take-up position shown by the phantom line, so that the weft yarn Y is pulled out from the cloth fell 15 side.

Third Embodiment FIG. 13 shows a weft processing device as a third embodiment.

In the third embodiment shown in FIG. 13, one end of the lever 102 is connected to the shield member 30 of the arm 21B, and the other end of the lever 102 is installed on the side of the main body 40 opposite to the main nozzle 1. The shield member 30 is connected to the fixed shaft 103, and the shield member 30 is configured to swing up and down about the fixed shaft 103 by an actuator (not shown). The shield member 30 covers the device main body 40 from the stationary stop position shown by the solid line. By swinging to the yarn take-up position indicated by the phantom line, the weft yarn Y that is continuous from the main nozzle 1 to the cloth fell 15 side passes through the lower guide surface part 58 and the front guide surface part 59 of the guide member 51 as shown in the phantom line. While being inserted into the guide groove 57, between the blades of the open removal cutter 24, and the vertical groove 76, the guide groove 57 is lifted upward and is located near the front of the suction hole 23 of the suction pipe 22. After being guided, it is characterized in that it is sucked into the suction hole 23 by the suction force of the suction pipe 22.

Fourth Embodiment FIG. 14 shows a weft processing device as a fourth embodiment.

In the fourth embodiment shown in FIG. 14 (A), the arm 21C is driven up and down in a direction intersecting with the weft yarn Y extending from the main nozzle 1 to the cloth fell 15 side so as to be substantially orthogonal to the suction pipe. The suction holes 23 of 22 are reciprocally driven substantially horizontally toward the arm 21C. Specifically, the flange 104 is coupled to the shield member 30 of the arm 21C provided with the yarn catching portion 31. An operating rod of an air cylinder 37 as an actuator is fastened to the flange 104. The air cylinder 37 serves as means for driving the arm 21C in a direction intersecting with the weft Y extending from the main nozzle 1 to the weave 15 side. Accordingly, the yarn catching portion 31 of the arm 21C is driven by the expansion and contraction of the air cylinder 37, so that the stationary stop position below the main nozzle 1 (refer to the state shown by the one-dot chain line in FIG. 1) and the suction hole 23 of the suction pipe 22. Also goes up and down to the thread take-up position shown by the solid line in FIG. 14 (A).

The apparatus main body 40 provided with the suction hole 23 of the suction pipe 22 is slidably assembled to the fixed base 108 via a guide mechanism 107 including a guide groove 105 and a guide rail 106. The guide groove 105 is a dovetail groove shown in FIG. 14 (B), which is formed on the upper surface of the fixed base 108 which is arranged above the apparatus main body 40 with a space therebetween. The guide rail 106 is formed on the lower surface of the fixed plate 109 coupled to the bottom of the apparatus body 40 and has a cross-sectional shape that slidably engages with the dovetail groove. The fixed plate 109 has a pin 110 projecting downward. The pin 110 is inserted in a penetrating state while loosely fitting in a long hole 111 formed in the front portion of the fixed base 108. An air cylinder 112 as an actuator is attached to the rear portion of the fixed base 108. The air cylinder 112 is means for driving the suction hole 23 of the suction pipe 22 to the arm 21C side. A vertical end portion of an angled connecting member 113 is fastened to the operating rod of the air cylinder 112. The vertical end of the connecting member 113 is inserted in a penetrating state while being loosely fitted in a long hole 114 different from the above formed in the rear portion of the fixed base 108. The horizontal end of the connecting member 113 located below the fixed base 108 is coupled to the lower end of the pin 110 projecting from the fixed plate 109, which projects below the fixed base 108. Accordingly, the expansion and contraction drive of the air cylinder 112 causes the device body 40 to reciprocate in a substantially horizontal direction along the guide mechanism 107, and thus the suction hole 23 of the suction pipe 22 is separated from the arm 21C in FIG. It is driven to the steady stop position shown in A) and the yarn delivery position shown in FIG. 15 which is close to the arm 21C.

Again, as shown in FIG. 14A, a U-shaped protection member 116 is attached to the recessed surface portion 115 of the apparatus main body 40 in which the removal cutter 24 is arranged. The upper and lower walls 117 and 118 of the protection member 116 are spaced apart from the removing cutter 24, and protect the fingers of the operator from the removing cutter 24. Guide grooves 119 and 120 as guide members are individually formed in the upper and lower walls 117 and 118, respectively. These guide grooves 119, 120 move the weft Y from the main nozzle 1 to the yarn catching section 31 of the arm 21C by the movement of the arm 21C from the stationary stop position to the yarn catching position. I will guide you to. The weft Y, which extends from the upper guide groove 119A to the yarn catching portion 31 of the arm 21C, crosses the suction hole 23 up and down in front of the suction hole 23 of the apparatus body 40.

In short, according to the fourth embodiment, when the weft yarn Y that is continuous from the main nozzle 1 to the cloth fell 15 side is transferred to the suction hole 23 of the suction pipe 22, first, FIG. As shown in FIG. 4, by raising and stopping the arm 21C from the stationary stop position to the yarn take-up position, the weft yarn Y that is continuous from the main nozzle 1 to the cloth fell 15 side is guided by the guide groove 119 and the blade of the open cutter 24. It is guided to the front of the suction hole 23 of the suction pipe 22 while sequentially passing through the space and the guide groove 120. Next, in a state where the arm 21C is stopped at the thread take-up position, as shown in FIG. 14 (B), the air cylinder 112 is driven to move the device body 40 to the arm 21C side, and the suction pipe 22 The suction hole 23 is brought closer to the weft yarn Y connected to the yarn catching portion 31 of the arm 21C from the main nozzle 1, and the suction force of the suction pipe 22 sucks the weft yarn Y into the suction hole 23.

In the first to fourth embodiments, the structure in which the gripper 25 is assembled to the device main body 40 provided with the suction pipe 22 is shown. However, in the present invention, the gripper 25 is the arm 21 or 21A, 21B, and 21C also have the same effect.

In addition, in the second to fourth embodiments, one main nozzle 1 is shown for the sake of simplification of description, but a type in which a plurality of main nozzles are provided is similar to the first embodiment. It can also be applied to

[0050]

[Effect of the device]

 As described above, according to the present invention, after the weft insertion failure occurs and the weft cutting operation of the regular cutter is prevented, the weft yarns connected from the main nozzle to the weaving cloth are connected between the main nozzle and the warp yarn. When passing the suction pipe of the suction pipe by the arm, the arm and the suction pipe are made to come close to each other, so that even if the suction force of the suction pipe is weak, the suction hole ensures that the weft thread that continues from the main nozzle to the arm is secured. Can be sucked into. Therefore, not only in the case of a fluid jet loom equipped with a plurality of main nozzles but also in the case of a fluid jet loom equipped with a single main nozzle, weft delivery is ensured during the course of weft processing. As a result, the weft removal performance for which weft insertion failure has been improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing the area around a weft insertion nozzle of a loom according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of a suction-removed portion of the first embodiment.

3A and 3B show a protection member and a guide member of the first embodiment, where FIG. 3A is a top view, FIG. 3B is a front view, and FIG.
Is a sectional view taken along the line C-C, and (D) is a bottom view.

FIG. 4 is a schematic diagram showing the entire loom of the first embodiment.

FIG. 5 is a flowchart of the first embodiment.

FIG. 6 is a flowchart of the first embodiment.

FIG. 7 is a state diagram showing a state in which the weft yarn of the first embodiment is guided in front of a suction hole by an arm.

FIG. 8 is a state diagram showing an initial state in which the guided weft of the first embodiment is sucked into a suction hole.

FIG. 9 is a state diagram showing a state in which the guided weft of the first embodiment is deeply sucked into a suction hole.

FIG. 10 is a state diagram showing a state where wefts are held by the gripper of the first embodiment.

FIG. 11 is a plan view showing a state in which the weft of the first embodiment is pulled out from the cloth fell side by the arm.

FIG. 12 is a sectional view showing an essential part of a second embodiment of the present invention.

FIG. 13 is a side view showing an essential part of a third embodiment of the present invention.

FIG. 14 shows an essential part of a fourth embodiment of the present invention, in which (A) is a partially cutaway side view and (B) is B-.
Sectional drawing which follows the B line.

FIG. 15 is an operation explanatory view of the fourth embodiment.

FIG. 16 is a sectional view showing a main part of a conventional example.

[Explanation of symbols]

 1, 2 ... Main nozzle 17 ... Regular cutter 20 ... Weft processing device 21, 21B, 21C, ... Arm 21A ... Extraction arm 22 ... Suction pipe 23 ... Suction hole 24 ... Removal cutter 25 ... Gripper 26 ... Weft sensor 34 ... Air Cylinder (arm horizontal driving means) 40 ... Air cylinder (arm raising / lowering driving means) 90 ... Control device 101 ... Guide arm 112 ... Air cylinder (suction hole driving means) Y ... Weft

Claims (2)

[Scope of utility model registration request] 1. When a weft insertion failure occurs, the weft cutting operation of the regular cutter is prevented, and then the weft yarns connected to the weave side from the main nozzle are transferred by an arm to the suction hole of the suction pipe, and from this arm to the main nozzle side. A weft processing device of a fluid jet type loom that cuts continuous wefts and removes the continuous wefts from the weaving side, wherein the arm is a cross component of the main nozzles to the continuous wefts and the suction pipe. A weft processing device for a fluid jet loom, characterized in that means for driving in a direction including both a horizontal component and a horizontal component toward the suction hole side is provided. 2. When a weft insertion failure occurs, the weft cutting operation of the regular cutter is prevented, and then the weft yarn continuing from the main nozzle to the weave side is transferred by an arm to the suction hole of the suction pipe, and from this arm to the main nozzle side. A weft processing device of a fluid jet loom that cuts continuous wefts and removes the continuous wefts from the weaving side, and means for driving the arm in a direction intersecting the main nozzles with the continuous wefts. A means for driving the suction hole of the suction pipe to the arm side, and a weft processing device for a fluid jet loom.