JPS6014861B2 - How to operate a shuttleless loom - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in an automatic operation method for a mumura loom, and a method for automatically operating a loom after distinguishing between an erroneous stop signal and a stop signal by repeating automatic stop and automatic start. be.

In recent years, fluid jet looms have become extremely popular, and because these looms have high productivity, weaving costs have been significantly reduced.

Furthermore, unlike the Azusa loom, the non-Sugi loom has less chance of failure, so improvements have been made to further reduce weaving costs through unmanned operation. In addition, when a mistake occurs during the weaving process, especially a striped yarn flying mistake, unless the loom is stopped, a large number of defective products will be produced. Therefore, many means have been developed to detect such mistakes. ing.

All of the devices developed so far are designed to prevent excessive stopping when the horizontal thread is flying normally.
These devices can greatly reduce the occurrence of erroneous signals, but in practice it is difficult to eliminate them, and even if they were possible, the devices would be extremely expensive. It will be done. As mentioned above, with the development of a device to detect errors in running the weft yarn, it has become possible to operate the loom continuously for longer periods of time as the number of times the loom is turned down has decreased.

Particularly during continuous operation at night, it has become possible to operate without an operator for a certain period of time. The inventors of the present invention have conducted numerous studies to reduce the number of stops for normally equipped fluid jet looms, but even with repeated improvements to the operating method such as the weft feeler, the number of stops per million picks has increased. 2
It is extremely difficult to keep the number of machines in operation below 80 times, and when carrying out unmanned operation for 8 hours from the temple at night until 6 a.m. the next morning, the ratio of the number of machines that operate continuously until 6 a.m. the next morning is 80.
% or more was extremely difficult.

After analyzing the reasons for the stoppage during the aforementioned late-night unmanned operation, we found that:
50 of the total number of machine stoppages occur when the machine is thick while the horizontal thread is flying normally, and there is no abnormality other than the horizontal thread.
It was found that up to %. In other words, the aircraft were stopped even when there was no need to do so, and this was a major hindrance to unmanned operation, especially at night.

The present invention has been achieved in order to eliminate the drawbacks of the prior art, and uses extremely simple means to automatically determine whether a signal truly requires a stop or a signal that does not. The present invention provides a method.

The automatic operation method for a cupless loom according to the present invention automatically starts a loom that has been stopped once and continuously operates the loom.

In the present invention, continuous operation refers to a case where the loom operates two or more revolutions. The present invention further automatically performs a starting operation to start the machine, and when stopping the machine immediately after starting, the automatic starting operation is repeated a predetermined number of times to determine whether the platform is too thick due to a signal error and to perform automatic operation. It is. In addition, in the present invention, "to loom immediately" refers to a case where the loom looms after one rotation of the loom. In addition, the present invention further automatically performs a starting operation to start the machine, and even when the machine is restarted after continuous operation, the automatic starting operation is repeated a predetermined number of times to determine whether or not the thick base is due to a signal error. The aim is to drive the car automatically.

The operating principle of the method of operating a cupless loom according to the present invention will be explained.

A: First, the loom is stopped by a stop signal issued from the filler.

B: When the loom stops, a timer is started by the stop signal, and the loom starts automatically after a certain period of time.

In this case, if the stop signal is of a nature that should truly stop the loom, the loom will stop immediately, or even if it is started, it will immediately stop again. However, in this case, if the signal at the time of stop is false, that is, the loom is stopped due to an error signal even though the chocolate yarn is flying normally, the loom continues to move by the automatic start signal. When the machine stops at a signal that requires it to stop, unnecessarily repeating automatic starts and stops not only deteriorates the quality of the fabric but also causes machine failure, so it must be avoided.

Therefore, in order to prevent unnecessary starting as mentioned above, a timer and a counter are provided to memorize the number of times of starting and stopping within a certain period of time, and the automatic starting device is stopped after a certain number of starting and stopping operations have been repeated. It composes.

Specifically, if the automatic start device is operated after a certain period of time after the machine stops, and the machine does not start, the automatic start operation is repeated a certain number of times.
If the engine still does not start, it is essentially treated as a stopped engine. In addition, if a device that has been stopped for a while continues to operate and then stops working for a short time, the startup operation is repeated again, and if this is repeated a certain number of times, it is treated as a working device. Next, an outline of an apparatus for carrying out the present invention will be explained.

The figure shows a block diagram of an automatic starting circuit for a loomless loom. A stop signal A of the loom main body 1 is transmitted to a timer 2 which can be preset, and at the same time a counter 3 which can be preset is activated.

The loom 1 is stopped by the stop signal A, but the timer 2
Start signal B is issued after a certain period of time due to the operation of
Loom 1 starts automatically. The number of stops of the loom 1 is stored by a counter 3, and when this number reaches a certain number, the loom is completely stopped by a stop signal C. Furthermore, if the stop signal A is not issued from the loom 1 after the start signal B is issued and the loom rotates two or more times, the timer 2 determines whether the loom will continue to operate automatically. is stored in the counter 3, and after the number of continuous activations reaches a certain value, the stop signal C
When this is issued, the loom will come to a complete stop.
In the case of unmanned operation, the automatic starting circuit is activated as described above, but in normal manned operation, automatic starting is dangerous, so operate switch 4 to prevent the automatic starting circuit from activating. You can also do it.

Also, when an alarm device is used to automatically start, it should be activated. - The illustrated circuit is constituted by a general electric circuit, but this is not particularly limited. The present invention is characterized in that an automatic starting circuit is added to a conventional cupless loom, and the loom is repeatedly stopped and automatically started a plurality of times.

With the above configuration, if the loom stops due to an error signal, it will automatically start using the automatic start signal, which prevents the loom from stopping unnecessarily as in the past, and significantly improves the operating rate. That's what I do.

Especially when operating a loom automatically at night or during holidays, it is possible to prevent the loom from stopping due to incorrect signals.
Unmanned operation can be carried out at high operating rates. The present invention can be used in the operation of fluid, particularly water or air, rounded looms, but can also be used in non-grilled looms such as rapier looms, gripper shuttle looms, etc.

In addition, the present invention allows the operator to stop the loom at will by incorporating a manual switch into the automatic start circuit.
When the loom is in manned operation, turn the switch to ○FF.
It is recommended that safety precautions be taken for workers.

Next, the effects of the present invention will be explained with reference to Examples.

Example Nissan Kao Target Room LW-51, 210 skin,
10 machines were designated as A block, and the other 10 machines of the same type were designated as B block.

Each loom in A-lock was equipped with an automatic start circuit, while the 10 looms in B-block did not have an automatic start device as before. These 20 looms have 15 pieces of warp polyester processed yarn, 15 pieces of interlaced yarn, and 15 pieces of horizontal polyester processed yarn.
4 installed a 2/2-il with a raw density of 101 x 83 bottles/inch and continued continuous operation for one month. From 6:00 a.m. to 10:00 p.m., a special machine is deployed for normal two-shift operation, and for eight hours from 1,000 p.m. to 6:00 a.m., all workers, including the special machine, are removed and the operation is completely unmanned. When we conducted the operation, we obtained the results as shown in the table below (average values for one month).
. The remaining operating rate is the number of looms that operated continuously from 10:00 in the evening to 6:00 in the morning.

・Represents the ratio to the total number of vehicles. As is clear from the above results, the A block equipped with an automatic starting circuit improved the remaining operation rate by about 10% compared to the B block without the device, and the A reversal rate improved by about 3% in terms of quality.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of an automatic starting circuit for a loom embodying the present invention. 1... Loom body, 2... Timer that starts when the loom stops, 3... Counter, 4... Switch for not operating the automatic start circuit. Figure 1

Claims (1)

[Scope of Claims] 1. A shuttleless loom, which is characterized in that the shuttleless loom automatically performs a starting operation after a predetermined period of time after it has stopped in response to a signal from a defect sensing means, and is operated continuously. how to drive. 2. If a shuttleless loom is started by automatically performing a starting operation after a predetermined period of time after it has stopped in response to a signal from a defect detection means, and the machine stops immediately after starting, the automatic starting operation is repeated a predetermined number of times and the machine is restarted within a predetermined number of times. 2. The method of operating a shuttleless loom according to claim 1, wherein the loom is completely stopped if the loom does not operate continuously. 3 The shuttleless loom automatically performs a starting operation after a predetermined period of time after it has stopped in response to a signal from the defect detection means, and when the machine continues to operate after starting and then stops again, the automatic starting operation is performed again. A shuttleless loom according to claim 1 or 2, characterized in that when this operation is repeated a predetermined number of times within a predetermined time and the loom is stopped again, the loom is completely stopped. How to drive.