JPH0749613B2 - Loom abnormal stop device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an abnormal stop device for a loom, and more specifically, to an abnormal signal when an abnormality such as a weft insertion error occurs in a weaving system in a fluid jet loom, for example. The present invention relates to a device for abnormally stopping a loom on the basis of the stop signal, which includes an abnormal signal transmitting means for transmitting the abnormal signal and a stop signal transmitting means for processing the abnormal signal and transmitting a stop signal.

[Conventional technology]

FIG. 4 illustrates a conventional abnormal stop device based on the above weft insertion error.

The apparatus includes an abnormal signal transmitting means 1 for detecting an occurrence of a weft insertion error and transmitting an abnormal signal S1 each time, and a stop signal transmitting means 2 for processing the abnormal signal S1 and transmitting a stop signal S2. Provide. The above-described processing of the abnormal signal S1 includes a method of converting the abnormal signal into a stop signal each time the abnormal signal is transmitted, for example, Japanese Patent Publication No. 55-32815 or Japanese Patent Publication No. 59-2.
As disclosed in Japanese Patent No. 6690, there is a method of storing an abnormal signal in relation to the length of cloth and time, and transmitting a stop signal if the frequency of occurrence of the abnormal signal exceeds a set value. Then, either method can be adopted.

The controller 3 controls various operation of the loom and is provided with a start switch 4, a stop switch 5, etc. When a weaving operator operates the start switch 4, a start command S3 is issued.
When the stop switch 5 is operated, and the stop signal S2
When is input, the controller sets a predetermined stop phase and issues a stop command S4.

The contactor 6 closes and opens the power supply circuit of the main motor 7 for driving the loom in response to the start command S3 and the stop command S4, and simultaneously opens and closes the circuit of the electromagnetic brake 8 of the motor. This starts or stops the loom.

With the above configuration, when the abnormal signal S1 is processed as described above and the stop signal S2 is transmitted, the loom abnormally stops. Here, the weaving worker repairs the cause of the abnormality, and after performing necessary maintenance work, operates the start switch 4 to restart. Then, these abnormal stop and restart data are sent to the centralized control section of the weaving factory for production management. For example, for a loom having an abnormal stop frequency excessively, it is determined that some constant factor exists, and the operator is instructed to further perform maintenance work.

[Problems to be solved by the invention]

In large-scale weaving factories, one weaving worker is usually responsible for dozens of looms or more in recent years. In such a case, weaving workers are mainly involved in abnormal stop due to work efficiency. It is necessary to divide labor by imposing restoration of the direct cause and entrusting maintenance workers with troublesome maintenance work.

By the way, if the division of labor is promoted as described above, there arises a problem that a serious failure of the loom may be caused.
For example, if weft insertion error is caused by opening failure due to a problem that occurred in the warp shedding device, the frequency of abnormal stop due to this will increase, so the maintenance management department will judge that inspection and maintenance are necessary and Work plans can be created based on the negotiations. However, if the weaving worker is repeatedly restarted by the time the maintenance worker arrives, a serious failure such as damage to the shedding device is finally caused.

Therefore, an object of the present invention is to prevent the above failures from occurring.

[Means for Invention]

Means of the present invention for solving the above-mentioned problems, maintenance command transmitting means for transmitting a maintenance command when the frequency reaches a set value while counting the frequency of the abnormal stop for each predetermined weaving section, and the maintenance command Therefore, the starting prohibition means for prohibiting the restart of the loom and the starting prohibition of the starting prohibition means are released,
The loom is provided with resetting means that enables restarting.

[Action]

According to the above-mentioned means, the restart of the loom is prohibited based on the maintenance command, so that the present condition of the defective portion that has occurred is not maintained and a serious failure does not occur. Then, when the maintenance is completed, the resetting means can promptly restart the vehicle.

[Embodiment 1] FIG. 1 shows an embodiment of the present invention. In this embodiment, a maintenance command transmitting means 10 and a start prohibiting means 15 are added to the conventional device shown in FIG. 4, and the same parts as those of the conventional device are designated by the same reference numerals and duplicated. The description is omitted.

The maintenance command transmitting means 10 is, for example, a command transmitter 11 composed of a flip-flop and a section setting device using a clock, for example.
It has 12 and a reset switch 13 which is a reset means. The command transmitter 11 inputs the stop signal S2 and counts the input frequency, and the time interval set in the interval setter 12,
For example, it is reset each time a control signal indicating one shift of 8 hours is input, and while repeating such a cycle, when the input frequency of the stop signal S2 reaches a set value during the one cycle, a high level maintenance command S5 is output.

The start prohibiting means 15 has a display 16 and a lock switch 17.

The display 16 is, for example, a display lamp, which is turned on in response to the maintenance command S5 and displays a message indicating that the starting operation is prohibited.

The lock switch 17 has a power transistor 18 provided in the transmission path of the start command S3, and transmits the maintenance command S5 to its base via an inverter 19. Therefore a maintenance directive
When S5 is transmitted, the transistor 18 becomes non-conductive and the transmission path for the start command S3 is cut off, so the weaving operator operates the loom even if the weaving operator overlooks the display on the display 16 and restarts. Never. The start prohibiting means 15 may be configured with either the display 16 or the lock switch 17.

The maintenance command S5 is also sent via the interface 20 to the centralized control section 21 of the weaving mill, where the maintenance work plan is established as described above. Then, after the maintenance worker has searched for the cause of the abnormality and repaired it, when the reset switch 13 is operated to reset the command transmitter 11, the loom returns to a restartable state.

[Embodiment 2] FIG. 2 shows another embodiment of the present invention. The same parts as those of the conventional device are designated by the reference numerals of FIG. 4 and their explanations are omitted.

The centralized control unit 22 comprises a maintenance command transmitting means 25 for controlling all the loom of the weaving factory. Memory of the transmitting means 25
26 indicates the stop signal S2 via the interface 23 of each loom.
And the machine number signal from the machine number transmitter 24 is input and stored, and the calculator 27 samples the data stored in the memory 26 and collates with the section signal such as the time section set in the section setter 28. Then, the frequency of generation of the stop signal S2 is calculated. The result of this calculation is recorded in the recorder 30 together with the data of the memory 26 and the section setter 28 and provided for production management and the like. The command transmitter 29 inputs the above-mentioned frequency calculated by the calculator 27, and when the value reaches the set value, it displays that fact on the indicator light 31 together with the number machine, and at the same time sends the maintenance command S5 and sends it. Is transmitted to the start prohibiting means 35 of the loom via the interface 23.

The start prohibiting means 35 includes a display 36 for displaying the above-mentioned display in response to the maintenance command S5 and a lock switch 45. An example of the lock switch will be described below with reference to FIG.

The contactor 6 comprises a contact point 6a of the main motor 7 and a contact point 6b of the electromagnetic brake 8. When the push button type start switch 4 is operated, a start command is issued.
S3 is emitted to close the contact point 6a, which closes the self-holding contact 42 of the relay 41, and at the same time, the brake contact 43 interposed in the electric path of the contact point 6b.
Opens. As a result, the electromagnetic brake 8 is released, the main motor 7 is started, and the loom is operated.

The lock switch 45 includes a normally closed switch contact 46 arranged in series with the starting switch 4, an electromagnetic actuator 47 for opening the switch contact, and an operation signal transmitter 48 using, for example, a monostable multivibrator. Amplifier 49,
It has a resetter 50 which is a reset means. When the maintenance command S5 is issued, the operation signal transmitter 48 receives it and outputs a continuous operation signal, and this operation signal is input to the electromagnetic actuator 47 via the amplifier 49. As a result, the switch contact 46 is continuously opened, so that the loom is not operated even if the start switch 4 is operated.

When the maintenance work is thus completed, the resetter 50 is operated to cut off the operation signal from the operation signal transmitter 48, and then the start switch 4 is operated to restart the loom. The reset signal from the resetter 50 is also sent to the maintenance command transmitting means 25 for storage and recording.

〔effect〕

As described above, according to the present invention, when the frequency of abnormal stop exceeds the limit, the loom is judged to be in need of maintenance, restart is prohibited, and restart is performed after maintenance. It is possible to avoid the fact that the cause of abnormality develops and causes a serious failure, and the weaving can be restarted promptly after the cause of abnormality is eliminated.

[Brief description of drawings]

FIG. 1 is a device block diagram showing an embodiment of the present invention, and FIG.
FIG. 3 is a block diagram of an apparatus showing another embodiment of the present invention, FIG. 3 is a detailed block diagram of an essential portion of FIG. 2, and FIG. 4 is a block diagram illustrating a conventional apparatus. 1 ... Abnormal signal transmitting means, 2 ... Stop signal transmitting means 4 ... Start switch, 5 ... Stop switch 10 ... Maintenance command transmitting means, 11 ... Command transmitter 12 ... Section setting device, 15 ... Starting prohibition means 16 …… Display unit, 17 …… Lock switch 25 …… Maintenance command sending means, 26 …… Memory 27 …… Calculator, 29 …… Command sending unit 35 …… Starting prohibition means, 36 …… Display unit 45 …… Lock switch, S1 …… Abnormal signal S2 …… Stop signal, S5 …… Maintenance command

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsutoshi Ono 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) References JP-A-50-118062 (JP, A) JP-A-54-42457 (JP, A)

Claims (1)

[Claims] 1. An abnormal signal transmitting means (1) for transmitting an abnormal signal (S1) when an abnormality occurs in a weaving system, and a stop signal transmitting means (1) for processing the abnormal signal and transmitting a stop signal (S2). 2) In the device for abnormally stopping the loom based on the stop signal, a maintenance command for counting the frequency of the abnormal stop for each predetermined weaving section and issuing a maintenance command when the frequency reaches a set value The transmitting means (10, 25), the start prohibiting means (15, 35) for prohibiting the restart of the loom in response to the maintenance command, and the start prohibiting of the start prohibiting means are released to restart the loom. An abnormal stopping device for a loom, which is provided with reset means (13, 50) for enabling the above.