JPH0680220B2 - Weft selection device for loom - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a weft selection device for a loom, and more specifically to a selection output from a control unit in synchronization with the operation of the loom according to a stored weave pattern pattern. The present invention relates to an improvement of a weft color display function of an electronic weft selection device that selects a predetermined weft according to a command signal. (Hereinafter, the weft color means not only the color of the thread, but also the type of weft that differs depending on the twisting method, the thickness, the material, etc.) (Prior Art) As a conventional example of the electronic weft selecting device described above, JP-A-58-104248 and 59-211653 and 211654 are available. Each of these weft selections has a display portion, although there are some differences in its specific configuration, and the weft color in the current weft insertion cycle is displayed there. For example, if one cycle of the weave pattern is "11223444" and the current weft insertion cycle is the eighth step, 4 is displayed as the weft color.

If, for example, a plain weave with the above-mentioned weave pattern is manufactured with a rapier loom and a defective weft is generated in the fifth step (weft color = 3), braking is applied after the next weft is inserted due to inertial rotation of the loom. And the rotation of the loom is stopped in the sixth step (weft color = 4). Repairs in this case will be performed by the following means. First, the next weft inserted in the sixth step is removed. Then, since the rapier loom cannot be rotated in the reverse direction, the defective weft yarn is removed by squeezing the weft yarn once without rotating the rapier. At this time, since the weft selecting device operates in synchronization with the operation of the loom, the weaving pattern in the weft selecting device is returned despite returning to the fourth step (weft color = 2) in the actual weaving pattern. Is recognized as having proceeded to the seventh step (weft color = 4), and this is displayed.

In addition, the influence of the defective weft (weft color = 3) is the fourth
Since it may extend to the weft of the step (weft color = 2), in that case, the weft may be forward-rotated once more when the front weft is exposed and removed. In this case, although the actual woven pattern pattern has returned to the third step (weft color = 2), the woven pattern in the weft selection device has proceeded to the eighth step (weft color = 4). Is recognized, and this is displayed. This relationship is shown in the table.

In order to eliminate such a difference between the actual woven pattern and the displayed woven pattern, the displayed woven pattern is returned to the actual woven pattern by push button operation etc. I need to do it.

Defect There is no particular problem if the weaving caused by the generation of wefts is about 2 to 3 picks in the front and back, but in the case of more than several picks, idle hitting is performed many times and push button operation each time. It is necessary to return the steps and make a mouthpiece. At this time, there is a case where the mess of the worker makes it difficult to understand the mouth.

When such a situation is reached, conventionally, there is no other measure than collating the fabric design sheet in which the weave pattern stored in the weft selection device is described with the actual fabric pattern,
This work was very time-consuming and cumbersome. The present invention seeks to solve the problems found in the prior art.

(Basic Configuration for Solving Problems) In the first invention, the weft color is displayed on the display section of the weft selection device over a plurality of continuous weft insertion cycles including the current weft insertion cycle. Is the gist.

(Preferred Embodiment) FIG. 1 shows an example of a display panel on which the woven pattern shown in Table 1 is displayed. On the left side of the display panel 10, there is a step display section 11 that simultaneously displays a plurality of consecutive steps including the current weft insertion cycle, and in the center, a weft color that displays the weft colors corresponding to the displayed steps in the same order. A display unit 12 is provided. On the upper right side, there is a keyboard section 13 for setting a woven pattern.
However, on the lower right side, there is provided a repeat display section 14 showing the repeat of the selected weft color. In addition, the display window showing the steps and repeats of the current weft insertion cycle has a frame line 17
It is surrounded by. However, instead of this, the color of the window may be different from the others. Push buttons 15 and 16 for manually moving the step forward or backward are provided below the repeat display portion 14.

In the illustrated example, the step display section 11 has a display window of 8 lines, so all the steps (second to first) of the weave pattern in Table 1 are performed.
Step) is displayed, the current weft insertion cycle is the eighth step, and the weft color is "4". Since the pick color is the third pick since the weft color has changed to "4", "3" is displayed in the repeat display section.

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 of the display panel
13 is a writing circuit 31 via the interface 21, and pushbuttons 15 and 16 are a reading command circuit 32 via the interface 22.
, Respectively. This interface 22
A timing detection mechanism 18 is also connected to. The timing detection mechanism 18 generates one pulse for one rotation of the crank 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 of the display panel and the repeat display section 14 are connected to a computer system via an interface 23.
An actuator group 19 such as a solenoid for driving a finger (not shown) for selecting a weft yarn is also connected to the interface 23.

The writing circuit 31 has a function of writing the texture pattern set by the keyboard 13 in the memory while being displayed on the display unit, and the output side thereof has the texture pattern storage circuit 33 (corresponding to the above memory). And interface 23 display circuit
It is connected to 231. 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 the timing detection mechanism 18 or the push buttons 15, 16 are connected.
A read command is given to the read circuit 34 in response to the signal from.

The reading circuit 34 is connected to a shift register 35 that can shift forward and backward. The shift register 35 has a number of registers corresponding to the number of windows of the weft color display section 12, and sequentially shifts the register contents each time there is an input from the read circuit 34, and the number of steps is always the same as the number of registers. And a selection signal (read from the weave pattern storage circuit 33) consisting of weft color. The output side of the shift register 35 is connected to the display driving circuit 231 of the interface 23, and the output side of the register corresponding to the current weft insertion cycle of the register is connected to the actuator driving circuit 232 of the interface 23. ing. The actuator drive circuit 232 is connected to the actuator group 19.

A weft color change detection circuit 36 is further connected to the read circuit 34, detects a weft color change of the weave pattern read from the weave pattern storage circuit 33, and outputs a reset signal 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. The counting circuit 37 counts the read command from the read command circuit 32 and displays the count value on the repeat display section 14, but when the weft color is switched, it is reset by receiving a signal from the weft color switching detection circuit 36. It

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 steps for reading. When a signal is received from the reverse push button 16, on the contrary, the steps are sequentially returned to instruct to read. Further, in relation to these signals, the read circuit 34 shifts the shift register 35 from the "forward" side in the figure when advancing the step, and shifts it from the "backward" side when returning the step. . 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 a faulty weft and stopping it, the worker performs blanking as necessary while checking the state of the flaw in the woven fabric, and removes the weft for repair. When the repair is completed, the step is moved forward or backward by a push button operation while matching with the actual woven pattern, and the mouth is adjusted.

Although a plurality of steps and weft colors are displayed in the above example, one step display may be used for setting, and only one weft color display may be displayed. The display method is not necessarily segment display, and may be CRT or the like. Further, the weft color display is expressed by numbers, but it may be displayed by a symbol or a display in accordance with the actual color of the weft. Furthermore, although the invention finds particular advantage in rapier looms, it can also be applied to other looms.

(Effect of the invention) Since the weft thread color display is performed before and after the current weft insertion cycle, it is possible to easily and without error relying on the woven fabric design sheet to reduce mistakes and improve woven fabric quality. To do. In addition, since the stop time before and after repair can be shortened, the operation rate will be improved and the number of stop defects will be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a display panel of a weft selection device of the present invention, and FIG. 2 is a block diagram showing an example of a computer system for its use. 10 …… Display panel, 12 …… Weft color display 11 …… Step display, 14 …… Repeat display 18 …… Timing detection mechanism 19 …… Actuator group

Claims (2)

[Claims] 1. A method for selecting wefts based on a preset weave pattern pattern, wherein at least the weft color display portion of the display panel includes a plurality of continuous weft insertion cycles including the current weft insertion cycle. A weft selection device for a loom, which displays weft color display over the entire length. 2. The apparatus according to claim 1, wherein the step display on the display panel also performs a plurality of step displays corresponding to the weft color display section.