JPH0480133B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for processing cut warp threads in a loom.

Prior Art Generally, 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,
If a warp yarn breaks, the loom must be stopped, the cut warp yarn must be taken out, and it 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 Fig. 1, the warp group T is sent out from the warp beam 1, but since the number of warp yarns in the warp group T reaches several thousand, it is not easy to remove the cut warp yarns, and it takes a lot of work time. It was something that 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 was becoming.

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 purpose is to provide a method for cutting warp threads in a loom that can reliably take out cut warp threads from a group of warp threads without manual intervention and that can cope with automation of the loom. An object of the present invention is to provide a warp processing method.

Configuration In order to achieve the above object, in the present invention, after the loom is stopped based on a warp cut detection signal from the warp cut detection means, the warp suction means, which is usually in a retracted position separated from the warp group, is moved near the weft group. , the warp suction means is operated to suction the warp suction means, the warp suction means performs suction operation over the entire width direction of the warp group to suction and separate the cut warp from the warp group, and then the warp suction means is operated to suction the warp yarns. Measures are being taken to move them to a position away from the group.

First Example Hereinafter, the first example embodying the present invention will be described in the following sections.
To explain based on FIG. 4, pneumatic or hydraulic cylinders 4 are provided above both ends of the cross roller 3 that guides the warp group T sent out from the warp beam 1 to the weaving position. Suction nozzle 5 longer than the width of the warp group T
is suspended and supported by piston rods 4a of both cylinders 4. A suction pipe 6 connected to a suction device (not shown) is connected to the upper center of the suction nozzle 5. As shown in FIG. 3, the pipe 6 is provided with a warp detection device 7 consisting of a light emitting/receiving element.

A first
As shown in the figure, a warp break detection device 8 is provided. As is well known, the weft breakage detection device 8 has a dropper 11 inserted through a plurality of rows of contact bars 9 connected to a power source, and each dropper 11 is connected to the contact bar 9 by the tension of the warp drawn through the hole 10. It is supported not to do so.
Therefore, when any of the warp groups T is cut, the dropper 11 falls and comes into contact with the contact bar 9, and a warp cut detection signal is issued to stop the machine, but in this embodiment, the same signal is simultaneously detected. Based on this, the pair of hydraulic cylinders 4 are operated, and
A suction device (not shown) connected to the suction nozzle 5 is activated.

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. 3, the suction nozzle 5
The cut warp T on the warp beam 1 side is cut by the suction action of
2 is suctioned and separated from the warp group T. The cut warp threads T2 sucked into the suction pipe 6 through the nozzle 5 are detected by the warp thread 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 suctioning and separating the cut warp thread T2 from the warp thread group T,
Add a spare thread to the same cut warp T2, and
And it is necessary to connect it to the woven fabric side through the warp shedding system. Although this work is done manually, the cut warp processing method of this example suggests the possibility of automatically connecting the cut warp on the warp beam side to the woven fabric, which could contribute to the automation of looms. be.

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 yarns T. Good too. In addition, the cut warp yarns can be more reliably suctioned and separated by injecting fluid toward the suction nozzle 5 from a position facing the suction nozzle 5 while holding the warp group T, or the suction nozzle 5 can be intermittently applied to the warp group T. May be brought into contact.

Second Embodiment Next, the second embodiment embodying the present invention will be explained in the fourth embodiment.
5, hydraulic cylinders 4 similar to those in the first embodiment are provided above both ends of the back crawler 3, and the piston rods 4a of both cylinders 4 are provided with a pair of substantially U-shaped piston rods. Brackets 12 and 13 are fixed. A motor 14 is provided on the bracket 12 (the right bracket in FIG. 4), and a pulley 15 fixed to a drive shaft 14a of the motor 14 rotates around the bracket 13 (the left bracket in FIG. 4). A belt 18 is hung between a pulley 17 fixed to a movably provided support shaft 16. 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. The nozzle 19 is provided with a detection device (not shown) similar to the warp detection device 7.

Now, when the loom is operating normally, the suction nozzle 19 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 brackets 12 and 13 are 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 forward 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 is separated from the warp group T by the suction action of the nozzle 19. The cut warp threads are sucked into the nozzle 19, and the nozzle 1
When detected by the warp detection device provided at 9, the operation of the motor 14 is stopped, and the piston rod 4a is operated for suction, and the suction nozzle 1
9 rises from the cut warp suction position as shown by the chain line in FIG.

In this embodiment, the same effect as in the first embodiment can be obtained, but by stopping the suction nozzle 19 at the position of the cut warp, the insertion position in the dropper 11 and the warp shedding system through which the cut warp should be passed can be easily determined. It has the effect of being discoverable. 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 work such as manually connecting the spare threads to the cut warp threads can be easily carried out.

In addition, in the first embodiment, the suction nozzle 5 was arranged above the warp roller 3 to suction and separate the cut warp threads T2 on the warp beam 1 side from the warp group T. The suction nozzle 5 may be placed near the warp shedding system where cutting is likely to occur, or the suction nozzle 5 may be placed near the warp shedding system.
Cut warp T2 while moving toward the rear side of the loom.
may be inhaled. In this case, the suction nozzle 5 is moved along the warp group T by moving the pair of hydraulic cylinders 4 in the front-rear direction of the loom.

Also, in the second embodiment, the suction nozzle 19
It is also possible to suction the cut warp threads at a location other than the vicinity of the bat crawler 3.

Effects As detailed above, according to the present invention, when a warp breakage is detected, the cut warp threads are separated by suction by the warp suction means that performs a suction operation over the entire width direction of the warp group, thereby eliminating the need for complicated manual work. There is no need to perform cut warp separation work, and the cut warp can be taken out quickly and reliably, and the suction operation of the warp suction means is performed only when a warp cut is detected, so the operating cost of the warp suction means can be kept to the necessary minimum. Moreover, the warp suction means is always in a retracted position away from the warp group, and only moves to the vicinity of the warp group when the cut warp is being suctioned and separated, and is moved to a position separated from the warp group after the cut warp is suctioned and separated. Since it is configured to move to , it has an excellent effect that it does not interfere with the warp repair work that is performed after the cut warp is suctioned and separated.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a loom, Fig. 2 is a perspective view showing an embodiment embodying the present invention, Fig. 3 is a partially cutaway side view showing the state of suction of cut warp yarns, and Fig. 4 is a perspective view showing an embodiment of the present invention. FIG. 5 is a perspective view showing another example of the present invention, and FIG. 5 is a perspective view showing a change from FIG. 4. Warp beam...1, Hydraulic cylinder...4, Suction nozzle...5,19, Warp cut detection device...
8, Motor...14, Belt...18, Warp group...
...T, cut warp thread...T2.

Claims (1)

[Scope of Claims] 1. After stopping the loom based on the warp cut detection signal from the warp cut detection means, the warp suction means, which is usually in a retracted position separated from the warp group, is moved to the vicinity of the warp group to perform the same operation. A position where the warp suction means is separated from the warp group after the warp suction means is operated to suction and the warp suction means performs a suction operation over the entire width direction of the warp group to suction and separate the cut warp from the warp group. A method for processing cut warp threads in a loom, characterized by moving the cut warp threads to a loom. 2. The warp suction means includes a pair of hydraulic cylinders respectively disposed above both ends of the warp group, and a suction nozzle longer than the width of the warp group connected to a suction device and suspended and supported by piston rods of both cylinders. A method for processing cut warp yarns in a loom according to claim 1, which comprises: 3. The warp suction means includes a pair of hydraulic cylinders disposed above both ends of the warp group, a pair of brackets that are suspended and supported by the piston rods of both cylinders, and a motor provided on one of the brackets. , 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 a loom.