JPS609952A - Cut warp yarn treatment in 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 Technical Field The present invention relates to a method for treating cut warp yarns in a loom.

PRIOR ART In general, when warp threads are cut during weaving, the loom must be stopped and the cut warp threads must be disposed of in order to maintain the quality of the woven fabric. That is, when warp yarns are cut, the loom must be stopped, the cut warp yarns must be taken out, and they must be reconnected to the woven fabric.

Conventionally, the work of taking out the cut warp threads has been done manually. However, as shown in Figure 1, the warp group ■ is sent out from the warp beam 1, but the number of warp yarns in the warp group T reaches several thousand, so the operation to remove the cut warp threads is not easy and takes a lot of work time. It required Also, warp yarn breakage tends to occur near the warp shedding system 2 shown in Figure 1, but since this position is far from the warp beam 1, that is, the rear side of the loom, processing the cut warp yarns is a very complicated task. It became.

Furthermore, stopping the loom for a long time to process the cut warp threads reduces operating efficiency, which goes against the improvement in productivity, which is the reason why we are aiming for higher speed looms.

Purpose The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a cut warp in a loom that can reliably take out the cut warp from a group of warps without manual intervention and that can cope with the automation of the loom. The purpose is to provide a processing method.

Structure In order to achieve the above-mentioned object, the present invention employs a method of suctioning the warp suction means based on a warp cut detection signal from the warp cut detection means and suctioning and separating the cut warp threads on the warp beam side from the warp group. ing.

First Embodiment Hereinafter, a first embodiment embodying the present invention will be explained based on FIGS. 2 to 4. Both ends of the back roller 3 that guide the warp group T sent out from the warp beam 1 to the weaving position Pneumatic or hydraulic cylinders 4 are provided above, and a suction nozzle 5, which is longer than the width of the warp group T, is suspended between the cylinders 4 and supported by the piston rods 4a of both cylinders 4. A suction vibro connected to a suction device (not shown) is connected to the upper center of the suction nozzle 5 . As shown in FIG. 4, the vibro is provided with a warp detecting device 7 consisting of a light emitting/receiving element.

As shown in FIG. 1, a warp break detection device 8 is disposed between the back row 53 and the weaving position. As is well known, the warp break detection device 8 has droppers 11 inserted through a plurality of rows of contact pars 9 connected to a power source, respectively.
Each dropper 11 is supported by the tension of the warp threads drawn through the hole 10 so as not to be connected to the contact parr 9.

Therefore, when one of the lower warp threads is cut, the dropper 11 falls and comes into contact with the contact parr 9, and a warp cut detection signal is issued and the machine is stopped. Based on this, the pair of hydraulic cylinders 4 are operated, and a suction device (not shown) connected to the suction nozzle 5 is operated.

In this embodiment, when a warp cut occurs, a cut warp process is automatically performed to take out the cut warp from the warp group. Therefore, the effect of this cutting warp treatment will be explained next.

Now, when the loom is operating normally, the suction nozzle 5 is placed in the retracted position shown by the solid line in FIG. When one of the warps in the warp group T is cut, the dropper 11 suspended and supported by the warp falls, and a warp cut detection signal is generated. Based on the detection signal, the machine is stopped, the suction device (not shown) is activated, and the piston rods 4a of both hydraulic cylinders 4 are
is operated for extrusion. Accordingly, the suction nozzle 5 is moved and placed directly above the warp group T, as shown by the chain line in FIG.

As shown in FIG. 4, the cut warp threads T2 on the warp beam 1 side are attracted by the suction action of the suction nozzle 5 and separated from the warp group T. The cut warp T2 sucked into the suction vibro through the nozzle 5 is detected by the warp detection device 7. Based on this detection result, the piston rod 4a is operated for suction, and the suction nozzle 5 is returned to the retracted position.

In this way, no matter which warp in the warp group T is cut, the cut warp T2 on the warp beam 1 side is reliably suctioned and separated from the warp group T by the suction nozzle 5. The processing can be carried out in a shorter time than conventional manual processing methods, which eliminates the complexity of the processing work and can contribute to improving the operating efficiency and productivity of the loom.

After the cut warp threads T2 are suction-separated from the warp group T, it is necessary to add a spare system to the cut warp threads T2 and connect them to the woven fabric through the dropper 11 and the warp shedding system.

Although this work is done manually, the cut warp processing method of the present invention suggests the possibility of automatically connecting cut warp threads on the warp beam side to the woven fabric side, which can contribute to the automation of looms. .

In this embodiment, the suction by the suction nozzle 5 was performed simultaneously with the extrusion operation of the piston rod 4a based on the warp yarn cutting detection signal, but the suction was started after the suction nozzle 5 was moved and placed directly above the warp group T. You may. In addition, the cut warp threads can be more reliably separated by suction by pinching the 81 warp threads and injecting fluid from a position facing the suction nozzle 5 toward the same nozzle 5, or the suction nozzle 5 is intermittently applied to the warp group T. May be brought into contact.

Second Embodiment Next, a second embodiment embodying the present invention will be explained based on FIG. 4, and a pair of substantially U-shaped brackets 12 and 13 are fixed to the piston rods 4a of both cylinders 4. A motor 14 is provided on the bracket 12 (the bracket on the right side in the figure m5).
A belt is connected between the pulley 15 fixed to the drive shaft 14a of 18 is attached.

A suction nozzle 19 connected to a suction device (not shown) is fixed to the belt 18, and is movable together with the belt 18. One circumferential nozzle is provided with a detection device (not shown) similar to the warp detection device 7.

Now, when the loom is operating normally, one suction nozzle is placed in the retracted position shown in FIG.

When any of the warps in the warp group T is cut, the dropper 11 drops and a warp cut detection signal is issued, as in the first embodiment. Then, the piston rod 4a is pushed out, the bracket 12.13 is lowered, and the suction nozzle 19 is moved to the outside just above the end of the warp group T, as shown in FIG. Next, the motor 14 is rotated in the normal direction, and the suction nozzle 19 traverses directly above the warp group T together with the belt 18. When the nozzle 19 reaches the cut warp,
The cut warp threads are suctioned and separated from the warp thread group T by the suction action of the same nozzle 19. When the cut warp threads are suctioned into the nozzle 19 and detected by the warp detection device provided in the nozzle 19, the operation of the motor 14 is stopped, the piston rod 4a is activated for suction, and one suction nozzle is activated. As shown by the chain line in FIG. 6, it rises from the cut warp suction position.

In this embodiment, the same effect as in the first embodiment can be obtained, but since the suction nozzle 19 stops at the position of the cut warp, it is easy to easily adjust the dropper 11 through which the cut warp should be passed and the insertion position in the warp shedding system. It has the effect of being able to be found. Therefore, this embodiment provides a more specific means for automatically connecting the cut warp yarns on the warp beam side to the woven fabric side.

In any of the embodiments described above, the suction of the cut warp threads is carried out at the rear of the loom, so that it is possible to easily connect the spare system to the cut warp threads manually, for example.

Further, in the first embodiment, the suction nozzle 5 is connected to the back roller 3.
The nozzle 5 is arranged above to suction and separate the cut warp threads T2 on the warp beam 1 side from the warp group T, but the nozzle 5 may be arranged near the warp shedding system where warp threads are easily cut, or The cut warp T2 may be sucked while moving the suction nozzle 5 disposed near the warp shedding system toward the rear side of the loom. In this case, the movement of the suction nozzle 5 along the warp group T is performed by moving the pair of hydraulic cylinders 4 in the tan longitudinal direction.

Also in the second embodiment, it is also possible to suction the cut warp yarns with one suction nozzle at locations other than the vicinity of the back roller 3.

Effects As detailed above, in the present invention, the warp suction means is operated to suction based on the warp cut detection signal from the warp cut detection means, and the cut warp on the warp beam side is suctioned and separated from the warp group. The cut warp threads can be reliably taken out from the warp group without complicated manual work, and the cut warp processing can also be automated.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a loom, Fig. 2 is a perspective view not showing an embodiment of the present invention, Fig. 3 is a partially cutaway side view showing a state in which cut warp yarns are sucked, and Fig. 4. 5 is a perspective view showing a separate aspect of the present invention, and FIG. 5 is a perspective view showing a change from FIG. 4. Warbbee l\1, hydraulic cylinder 4, suction nozzle 5.1
9. Warp break detection device 8, motor 14, belt 18, warp group T1 cut warp T2° Patent applicant: Toyota Industries Corporation.
Patent Attorney On 1) Hironobu 1st R! lJ 3rd BQ

Claims (1)

[Scope of Claims] 1. Cutting in a loom, characterized in that the warp suction means is suction operated based on the warp cut detection signal from the warp cut detection means, and the cut warp on the warp beam side is suction-separated from the warp group. Warp processing method. 2. The warp suction means is connected to a pair of hydraulic cylinders respectively disposed above both ends of the warp group and a suction device,
2. The method for processing cut warp threads in a loom according to claim 1, further comprising a suction nozzle that is longer than the width of a group of warp threads suspended and supported by the piston rods of both cylinders. 3. The warp suction means is suspended and supported by a pair of hydraulic cylinders respectively disposed above both ends of the warp group and piston rods of both cylinders, and is provided on a pair of brackets facing each other and on one bracket. Claim 1 comprises a motor, a belt stretched between both brackets and operated by the motor, and a suction nozzle fixed to the belt and connected to a suction device. A method for processing cut warp threads in the m-machine described above.