JP2566198B2 - Weft selection device for loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weft selecting device for a loom, and more particularly to a weft selecting device according to a stored weaving pattern in response to a selection command signal output from a control section in synchronization with the operation of the loom. The present invention relates to an improvement in butt alignment work in an electronic weft selection device for selection.

In the following description, the "weft color" means not only the color of the weft, but also the kind of weft that differs in at least one of the twist mode, thickness and material.

[0003]

2. Description of the Related Art Japanese Patent Laid-Open Nos. 58-104248 and 59-21 are known as conventional examples of the above-mentioned electronic weft selecting device.
There are techniques disclosed in 1653 and 59-21164. Although these prior arts have some differences in their specific configurations, each device has a display unit, on which the weft color in the current weft insertion cycle is displayed. For example, a woven pattern 1
If the circulation is "1,1,2,2,3,4,4,4" and the current weft insertion cycle is the eighth step, "4" is displayed as the weft color on the display of the device. .

Incidentally, it is assumed that, for example, a plain weave having the above-mentioned woven pattern is woven by a rapier loom and a defective weft is generated in the fifth step (weft color = 3). At this time, the next weft thread is also inserted due to the inertial rotation of the loom, so that the rotation of the loom is stopped in the sixth step (weft color = 4) by braking. In this case, the defect repair is performed by the following procedure. First, the next weft inserted in the sixth step is removed. Then, since the rapier loom cannot be operated in the reverse direction, the defective weft is squeezed out and removed by one forward rotation of the loom (that is, idle driving is performed) without the rapier holding the weft.

However, in the structure of the prior application as described above, there is a problem that the actual weave pattern and the displayed weave pattern do not match due to the normal rotation of the loom associated with such defect repair. It will come. This is shown in Table 1.
Will be described more specifically.

[0006]

[Table 1]

As described above, when the weaving machine is rotated in the normal direction during the defect repair, the weft selecting device operates in synchronization with the operation of the weaving machine, so that the weave pattern in the device is the seventh step (weft color = 4). It is recognized as having proceeded to step 3, and this is displayed on the display unit. However, in the actual woven pattern, the process returns to the fourth step (weft color = 2). That is, the result is that the actual woven pattern does not match the displayed woven pattern.

Further, the influence of the defective weft (weft color = 3) may extend to the weft (weft color = 2) of the preceding fourth step. In that case, the weaving machine may be rotated once again in order to allow the front weft yarn to come out and be removed. In this case, the woven pattern in the device is recognized as having advanced to the eighth step (weft color = 4), and this is displayed on the display unit. However, in the actual woven pattern, the process returns to the third step (weft color = 2). Therefore, the result is that the actual woven pattern does not match the displayed woven pattern.

That is, every time one defective weft yarn is removed in the defect repair, the woven pattern step in the apparatus is increased and the actual woven pattern step is decreased.
In order to eliminate such a difference between the displayed woven pattern pattern and the actual woven pattern pattern, an operator makes an adjustment to match the displayed woven pattern pattern with the actual woven pattern pattern by a push button operation or the like. There is a need.

Defective weaving caused by the generation of the weft yarn
There is no particular problem as long as it covers 3 picks. However, if the flaw reaches a pick beyond that level, it is necessary to hit the blank several times and operate the push button each time to make a butt. This work may cause confusion of the workers and prevent the correct contact.

When such a situation is reached, in the prior art, there is no other measure than collating the woven fabric design sheet in which the woven pattern pattern stored in the weft selecting device is described with the actual woven pattern pattern. But this work is very time consuming,
In addition, the work was quite troublesome.

In order to solve such a problem, in the weft selection device proposed by the applicant in the original application, the weft selection device has a plurality of continuous weft insertion cycles including the current weft insertion cycle in the display section. The weft color is displayed.

Defects When the weaving machine is stopped by weaving the weft yarns, the worker performs blanking as necessary while observing the state of the defects in the woven fabric, and removes the weft yarns for repair. As a result of such a configuration, in the proposed system, when the repair is completed, the step is moved forward or backward by the push button operation while visually checking the display pattern so as to match the actual woven pattern, and the mouth is adjusted. You can
That is, since it is not necessary to rely on the textile design document, the knives can be easily and reliably adjusted.

[0014]

However, even if the weft selecting device is constructed as described above, it is not possible to sufficiently cope with the case where wefts of the same weft color are continuously inserted. In particular, when all the steps displayed on the display unit are the same, the above-mentioned display of the weft color loses its original meaning and cannot be dealt with at all. That is, the mouth-to-mouth operation cannot be performed easily and accurately.

The basic object of the present invention is to sufficiently cope with such a case, and in a loom of the type in which weft yarns are selected based on a preset weave pattern pattern, the same weft color is used. Even when wefts are continuously wefted, it is necessary to easily and accurately adjust the butt.

Another object of the present invention is to provide a weft selection device which displays a weft color over a plurality of continuous weft insertion cycles including the current weft insertion cycle in a display unit, in a weft selection device having the same weft color. It is to easily and accurately adjust the alignment even when the weft insertion is continuously performed in excess of the number of display steps on the display unit.

[0017]

Therefore, in the present invention, a repeat display portion is provided on the display panel, and the accumulated repeat number after switching to the current weft color is displayed here.

[0018]

[Operation] At the time of aligning, the operator looks at the actual weave pattern of the fabric and counts the number of continuous weft insertions after the weft yarn presently existing in the fabric is switched to the weft color. . After that, the step is moved forward or backward by the push button operation, and the numerical value of the accumulated repeat display is made to match the counted number.

[0019]

EXAMPLES FIG. 1 shows an example of a display panel,
The woven pattern shown in Table 1 is displayed there. On the left side of the display panel 10, a step display section 11 that simultaneously displays a plurality of consecutive steps including the current weft insertion cycle is displayed, and in the center of the panel, the weft color corresponding to each displayed step is displayed in the same order. A weft color display unit 12 is provided.

A keyboard 13 for setting a weave pattern is provided on the upper right side of the panel, and a repeat display section 14 for displaying the repeat of the selected weft color is provided on the lower right side.

The display window showing the steps and repeats of the current weft insertion cycle is surrounded by a frame line 17. However, instead of such a frame line, the window color may be different from the others. On the lower side of the repeat display portion 14, push buttons 15 and 1 for moving the step forward or backward are provided.
6 is provided.

In the illustrated example, since the step display section 11 has a display window of 8 lines, all steps (second to first steps) of the weave pattern in Table 1 are displayed, and The insertion cycle is the eighth step and the weft color is "4". Further, when the repeat display portion 14 is viewed, since it is displayed as "3", it is understood that it is the third pick after the weft color becomes "4".

As shown in FIG. 2, the display panel of the weft selection device of the present invention is connected to a computer system via an interface.

That is, on the input side, the keyboard 13 of the display panel is connected to the writing circuit 31 via the interface 21, and the push buttons 15 and 16 are connected to the read command circuit 32 via the interface 22.
The interface 22 has a timing detection mechanism 18
Is also connected. The timing detection mechanism 18 generates one pulse for each rotation of the crankshaft of the loom, and is composed of, for example, a proximity switch opposite the crankshaft.

On the output side, the step and weft color display sections 11 and 12 and the repeat display section 14 of the display panel are connected to a computer system via an interface 23. Further, the interface 23 includes an actuator group 1 such as a solenoid for driving a finger (not shown) for selecting a weft thread.
9 is also connected.

The writing circuit 31 has a function of writing the weave pattern set by the keyboard 13 in the memory while displaying it on the display unit. The output side of the writing circuit 31 is connected to the weave pattern storage circuit 33 (corresponding to the above memory) and the display section drive circuit 231 of the interface 23. The woven pattern storage circuit 33 is further connected to the reading circuit 34.

The output side of the read command circuit 32 is connected to the read circuit 34, and receives a signal from the timing detection mechanism 18 or the push buttons 15 and 16 to give a read command to the read circuit 34.

The readout circuit 34 is connected to a shift register 35 that can shift forward and backward. The shift register 35 is provided in the weft color display section 12
The number of registers corresponds to the number of windows, and the contents of the registers are sequentially shifted each time there is an input from the read circuit 34. Also this shift register 35
Always stores a selection signal consisting of steps corresponding to the number of registers and weft colors (read out from the weave pattern storage circuit 33). The output side of the shift register 35 is the display unit drive circuit 231 of the interface 23.
It is connected to the. The output side of the register having the contents corresponding to the current weft insertion cycle is the actuator drive circuit 232 of the interface 23.
It is connected to the. The actuator drive circuit 232 is connected to the actuator group 19.

A weft color switching detection circuit 36 is further connected to the reading circuit 34, and the weave pattern storage circuit 3 is provided.
The weft color switching of the weave pattern read out from No. 3 is detected and a reset signal is output to the counting circuit 37.

The input side of the counting circuit 37 is further connected to the read command circuit 32, and the output side thereof is connected to the repeat display section 14 of the display panel via the display section drive circuit 233 of the interface 23. Counting circuit 37
Causes the repeat display unit 14 to display the count value of the read command from the read command circuit 32. When the weft color is switched, it is reset by receiving a signal from the weft color switching detection circuit 36.

When the read command circuit 32 receives signals from the timing detection mechanism 18 and the forward push button 15, the read command circuit 32 commands the read circuit 34 to sequentially advance the reading. When a signal is received from the reverse push button 16, on the contrary, an instruction is issued to sequentially return the steps and read them.

Further, in connection with these signals, the reading circuit 3
4 is a shift register 35 for advancing steps
Shift from the "forward" side in the figure. When the step is returned, it is shifted from the "reverse" side. Similarly, the weft color change detection circuit 36 adds the read command when advancing the step, and subtracts the read command when returning the step.

Next, the operation will be described. When weaving after finishing the repair work, the operator looks at the weave pattern of the actual woven fabric and sees how many weft yarns are present in the weaving fabric since the weft yarns present in the weaving fabric have been switched to the weft color. Count. After that, the step is moved forward or backward by the push button operation, and the numerical value of the accumulated repeat display is made to match the counted number. This completes the butt alignment.

In the above example, the display method is segment display, but CRT or the like may be used. Further, the present invention is particularly advantageously applied to a rapier loom, but can be applied to other looms as long as the weaving machine is of a type in which weft yarns are selected based on a preset weave pattern.

[0035]

As is apparent from the above, according to the present invention, wefts of the same weft color are continuously sewn, especially when wefting is continuously performed over the number of display steps in the display section. It can be done easily and accurately.

[Brief description of drawings]

FIG. 1 is a front view showing a display panel of a weft selection device of the present invention.

FIG. 2 is a block diagram illustrating an example of a computer system for its use.

[Explanation of symbols]

 10 Display Panel 11 Step Display Section 12 Weft Thread Color Display Section 13 Weave Pattern Setting Keyboard 14 Repeat Display Section 15 and 16 Push Buttons for Step Forward / Reverse Step 18 Timing Detection Mechanism 19 Actuator Group

Claims (1)

(57) [Claims] 1. A method for selecting a weft thread based on a preset weave pattern pattern, wherein a repeat display portion is provided on a display panel, and a weft thread color after switching to the current weft color is provided here. A weft selection device for a loom, wherein the cumulative number of repeats is displayed.