JP2796874B2 - Water jet room watering control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a water jet loom watering control device.

[Conventional technology]

Japanese Utility Model Laid-Open Publication No. 51-30260 discloses an automatic water supply means for preventing drying of a thread, a woven fabric, or the like while the water jet loom is stopped. By such watering during stoppage, it is possible to prevent the adhesion of yarns such as glue from drying,
Upon subsequent restart of the water jet loom,
The same state as during operation can be ensured for yarn, woven fabric, and the like.

[Problems of the prior art]

During normal operating hours, when the water jet loom stops, the weaver relatively quickly reaches the stopped water jet loom and takes the necessary action to restart,
The downtime of the water jet loom is relatively short. Therefore, the need for watering is low and a small amount of watering is sufficient.

On the other hand, if the water jet loom stops temporarily during operation during unmanned operation periods such as nights and holidays, the water jet loom will be continuously stopped until the operation is resumed after the stoppage, during which time woven fabric etc. It will dry. Therefore, watering at this time is important and indispensable.

According to the above prior art, the same watering state is set in both cases of stopping the water jet loom during normal operation and stopping the water jet loom during unmanned operation. Therefore, if the watering state is set in accordance with one stop state, there is a problem that a necessary watering state cannot be obtained when the other is stopped.

In order to solve this, it is conceivable to change the sprinkling state in advance during unmanned operation at night. But,
The task of setting and changing the watering state each time unattended operation is performed is very complicated.

In addition, the invention of Japanese Utility Model Application No. 1-117006 discloses that the water sprinkling device is operated after a predetermined time after the water jet loom is stopped. However, the same problem as described above also exists therein.

[Object of the invention]

Therefore, an object of the present invention is to make it possible to switch the sprinkling state by a simple operation.
Another object of the present invention is to automatically set an appropriate watering state according to the suspension period of the water jet loom, so that it can be restarted in a good state at the start of operation.

[Solution of the Invention]

Therefore, the present invention prepares a controller in a long-term stop mode in order to cope with a long-term stop period, in addition to a controller in a relatively short-term normal stop mode, and manually controls these two controllers. Alternatively, it is selectively switched by an automatically operable changeover switch, so that a command signal from these controllers can drive the motor of the water supply pump in each period under an appropriate watering operation.

[Function of the invention]

In the case of a manual changeover switch, the weaver switches the changeover switch to the normal stop mode controller during normal operation, and to the long stop mode controller during unattended operation at night or on holidays. Switch.

During normal operation, when the water jet loom stops, the controller in the normal stop mode, for example, periodically generates a command signal, drives the pump motor, activates the water sprinkler, and periodically operates the woven cloth. Water is sprinkled, and repair work is performed by the weaver. On the other hand, when the water jet loom stops during unmanned operation at night or on holidays, the controller in the long-term stop mode generates a command signal at a relatively long cycle and periodically drives the pump of the sprinkler. In addition to preventing drying of woven cloth, etc., a command signal is generated during the preparation period before the operation start time as necessary, and the sprinkler is forcibly operated regardless of the periodic command signal generation timing. , Watering the woven fabric, etc., and preparing for the subsequent normal operation.

In addition, when the changeover switch is an automatic operation type, the changeover switch is normally switched to the controller side in the normal stop mode. Alternatively, when the operation is stopped in a state where the automatic restoration is impossible, the operation device of the changeover switch switches the changeover switch to the controller side in the long-term stop mode.

Therefore, an appropriate watering operation can be secured according to the length of the stop time.

〔Example〕

FIG. 1 shows an outline of the water jet loom 1.

A large number of warp yarns 2 are fed out of a feed beam 3 as a sheet, passed through a tension roll 4, along a warp line, passed through a dropper 5, and formed with a weft 7 before weaving while forming an opening by opening movement of a heald 6. Interlacing, the woven cloth 9 is formed by the beating movement of the reed 8. Then, the woven fabric 9 is wound on a cloth winding beam 11 via a winding roll 10.

Note that the tension of the warp yarn 2 is detected by the tension detector 12 at the position of the displaceable tension roll 4 and becomes an input to the feed control device 13. This feed control device 13
Compares the target tension value with the tension value detected by the tension detector 12, controls the rotation of the feed motor 14 according to the deviation, and controls the rotation amount of the feed beam 3, that is, the feed amount of the warp yarn 2. Control.

On the other hand, the water spray device 15 drives a pump 18 by a motor 17 to supply water 20 in a water tank 19 to one or two or more water supply pipes 16 in the weaving width direction. From above, at least one of the heald 6, the warp thread 7, the reed 8, and the woven fabric 9 is sprayed with mist-like water 20 from above to prevent the woven fabric 9 and the like from drying.

The water supply pipe 16 is in the weaving width direction and is attached in a fixed state, or is supported rotatably around the axis of the water supply pipe 16 so that it can be driven by a swing mechanism or the like. Is provided. Here, the motor 17
Is controlled by the watering control device 22 of the present invention.

 FIG. 2 shows the configuration of the watering control device 22.

The control device 22 for watering includes a controller 23 in a normal stop mode, a controller 24 in a long-term stop mode, and these controllers 23,
It is assembled by a changeover switch 25 that selectively connects the output terminal of the motor 24 to the input terminal of the drive circuit 26 of the motor 17.

The controller 23 in the normal stop mode includes a cycle setting circuit.
27, a pulse generation circuit 28, an AND circuit 29, and a one-shot circuit 30. The output terminal of the controller 23 is connected to one contact 251 of the changeover switch 25.

The controller 24 in the long-term stop mode includes a cycle setting circuit.
31, a pulse oscillating circuit 32, an AND circuit 33, a one-shot circuit 34, as required, a time setting unit 35, a comparator 36, a clock
37, AND circuit 38, one-shot circuit 39 and OR circuit
Assembled by 40 and connected to the other contact 252 of switch 25 at the output of controller 24.

The movable contact 250 of the changeover switch 25 is configured, for example, as a manual changeover type, and interlocks with the preparation switch 42 that is pressed before the loom is started as necessary.

During normal operation, the weaver turns on the preparation switch 42 before starting, and sets the movable contact 250 of the changeover switch 25 to the contact 251.
Switch to the side.

When a stop signal such as a weft stop or a vertical stop is generated during weaving after the activation of the water jet loom 1, the signal is supplied to one input terminal of the AND circuit 29 via the input terminal 43 and is set to “H” level. Given as input. Since the pulse oscillation circuit 28 generates a pulse output at the cycle t1 set by the cycle setting circuit 27, the AND circuit 29 sends the pulse to the one-shot circuit 30. Therefore, the one-shot circuit 30 starts a predetermined time after receiving the pulse.
Generates command signal S1 over T1 and switches
The motor 17 of the pump 18 is sent to a drive circuit 26 via 25 and is driven. In this way, the pump 18
At t1, it is driven periodically over time T1. For this reason, as shown in FIG. 3, the water sprinkling device 15 sprinkles water on the woven fabric 9 or the like at a predetermined cycle t1 during the stop period of the water jet loom 1 for a relatively short period of time to prevent them from drying. Go. During this time, the weaver removes the cause of the stop, performs necessary repair work, and
To restart. As a result, the stop signal changes to the “L” level, and the AND circuit 29 blocks the passage of the pulse and sets the state in which the command signal S1 is not output.

When the water jet loom 1 enters unmanned operation for night or holiday unmanned operation, the weaver switches the changeover switch 25 and switches its movable contact 250 to the contact 252.

When a stop signal is generated during unattended operation,
Sends a pulse output from the pulse oscillation circuit 32 to the one-shot circuit 34 at a cycle t2 set by the cycle setting circuit 31, generates a command signal S2 over a time T2, and outputs a drive circuit through the OR circuit 40 and the changeover switch 25. Send to 26. Therefore, as shown in FIG. 3, the watering device 15 continues the watering operation over a long stop period at a period t2 and a time T2. Here, the period t2
Is set to be longer than the period t1 as an example, and the time T2 may be shorter than the time T1.

During the preparation period before the shift to the normal operation time after the unmanned operation period has elapsed, the comparator 36 receives the time signal from the clock 37 on the one hand, and receives the time signal from the time setting device 35 from the other input. With the watering time as an input, an “H” level output is generated at the time of coincidence of both times, and is passed through the AND circuit 38 under the condition of a “H” level stop signal, driving the one-shot circuit 39, and the time T3. A command signal S3 is generated, and this is
The motor 17 is driven via the changeover switch 25 and the drive circuit 26. Therefore, the watering device 15 is a one-shot circuit 34.
Even before the arrival of the periodic command signal S2, the sprinkling device 15 is forcibly activated at a predetermined time before the normal operation start time, so that the woven cloth 9 and the like can be set to a state in which weaving can be resumed immediately. To go.

Of course, the periods t1, t2, and the times T1, T2, T3 are set in advance to appropriate values according to the type of fabric, the type of thread, the processing status thereof, and the like.

The changeover switch 25 can switch the movable contact 250 to the contact 251 side in conjunction with the ON operation of the preparation switch 42 that is pressed before the loom is started.
Before starting normal operation, first set the controller in the long-term stop mode.
It is necessary to switch the movable contact 250, which had been switched to the contact 252 side to select 24, to the contact 251 side, to select the controller 23 in the normal stop mode. If the movable contact 250 is switched to the contact 251 side in conjunction with the ON operation of the preparation switch 42 that is always pressed, forgetting to switch the changeover switch 25 can be prevented. Note that a start switch of the loom may be used instead of the preparation switch. In short, it is sufficient to use a signal related to the start operation of the loom. Further, when the normal operation start time comes, the movable contact 250 of the changeover switch 25 of each loom may be simultaneously switched to the contact 251 side by a command from the central control host computer.

[Other embodiments]

In the above embodiment, the changeover switch 25 is of a manual type, and is operated independently or in conjunction with the preparation switch 42 and the like. However, the changeover switch 25 may be automatically operated by the operation device 41 as illustrated in FIG. That is, after inputting the stop signal, the operating device 41 automatically switches the changeover switch 25 from the contact 251 to the contact 252 after a lapse of a certain long time, or inputs an unrepairable signal from an automatic repair device or the like. Or when a switch command is input from the central control host computer at a predetermined operation end time, the changeover switch 25 is set to the contacts 251 to 252.
Automatically switch to. In addition, this changeover switch 25
Is interlocked with a target value setting switch or the like in the feed control device 13 as necessary, so that the target tension of the warp yarn 7 is set to be lower than the tension at the time of weaving when the machine is stopped for a long period of time. Thus, the elongation of the warp yarn 7 during stoppage is prevented, and the occurrence of a stop stage is prevented. In order to prevent elongation of the warp yarn 7 during stoppage, the loom is stopped at a crank angle at which the warp yarn is in an open state at least during a short-term stoppage or a long-term stoppage. Is preferred.

Note that the controller 23 in the normal stop mode of the above embodiment periodically generates the command signal S1, but instead, the command signal S1 is generated only after a certain period of time after the loom is stopped.
Is generated, and the command signal S1 is not generated during a short period of time. The changeover switch 25
The contact 251 may be configured to be normally grounded, and a command signal S1 for instructing not to spray water at all while the loom is stopped may be generated. That is, in the present invention,
The “sprinkling operation appropriate for a short-term stop” includes not sprinkling at all. In addition, the controller 24 in the long-term stop mode
Is performed in combination with periodic watering and intensive watering before operation, but is configured as a method that performs only one of periodic watering and forced watering before operation. You can also.

Also, since the water for watering 20 can be taken from the tap water, the control target of the watering control device 22 is not the motor 17,
It may be an electromagnetic valve in a water supply pipe.

〔The invention's effect〕

In the present invention, the watering state can be selected only by a simple switching operation of the changeover switch, so that an appropriate watering state can be set according to the stopped state of the water jet loom, and a troublesome adjustment such as setting or changing the watering state can be performed. Operation can be omitted.

In the long-term stop mode, when watering is performed in parallel with periodic watering and forced watering before starting, watering is always performed before weaving is restarted. Cloth, healds, reeds, and the like are set in an appropriate state in advance for resuming weaving.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a water jet loom, FIG. 2 is a block diagram of a watering control device, FIG. 3 is an operation explanatory diagram, and FIG. 4 is a block diagram of a changeover switch operating portion. 1 ... water jet loom, 2 ... warp yarn, 6 ...
Heald, 7 ... weft, 8 ... reed, 9 ... woven cloth, 15 ...
Sprinkler device, 16 ... water supply pipe, 17 ... motor, 18 ... pump, 20 ... water, 22 ... sprinkler control device, 23, 24 ... controller, 25 ... changeover switch, 26 ... drive circuit.

Claims (3)

(57) [Claims] In a watering device for supplying water to a watering nozzle and watering at least one of a heald, a reed and a woven cloth while the water jet loom is stopped, a watering operation command signal suitable for a short-term stoppage is provided. A controller in a normal stop mode that occurs, a controller in a long-term stop mode that generates a command signal of a watering operation corresponding to a long-term stop, and a command signal from one of the two controllers. A water jet loom watering control device, characterized in that the device comprises a feed changeover switch. 2. The controller according to claim 1, wherein said controller comprises a periodic signal generating means, and said controller in said long-term stop mode generates a command signal having a cycle longer than that of said controller in said normal stop mode. 2. The water jet loom watering control device according to claim 1, wherein the control device is constituted by means. 3. The controller in the long-term stop mode is constituted by means for forcibly generating a command signal during a preparation period before a restart start time of the water jet loom. The control device for watering a water jet loom according to claim 1.