JPH0742633B2 - Loom operation record device - Google Patents

Description

The present invention relates to an operation history recording device for a loom, and more specifically, when an abnormality occurs in a weaving system or the like and the loom stops, the cause of the abnormality after the abnormal stop is The present invention relates to an apparatus that enables the operation history to be grasped by recording the time until the vehicle is repaired and restarted.

[Conventional technology]

The operation history recording device is used for maintenance management of the loom, and the following will be explained by taking an abnormal stop due to a weft insertion error in the shuttleless loom as an example.

Abnormal stop of the shuttleless loom is often due to weft insertion error.This weft insertion error is caused either by an accidental and minor cause or by a permanent cause that occurs in the weaving system.In the former case, the cause is The loom can be restored to normal operation by repairing and restarting the loom in a short time.

However, if the abnormal stop is repeated after the restart, it is judged that some constant cause has occurred, so the worker inspects the related parts and finds the abnormal cause, and repairs it. To restart. If the abnormal stop is repeated, the above-mentioned inspection and repair work are performed assuming that there is a further factor, and thus the loom is maintained in a good condition. And this latter inspection and repair work requires a lot of time.

However, in a recent weaving factory, one worker usually handles several tens of looms, so that it becomes difficult to grasp the above-mentioned work history for each loom.

In such a case, the operation history recording device records the abnormal stop frequency of the loom and the stop time thereof, and provides these operation histories for maintenance management. In other words, the required time for inspection and repair work, and hence the type of cause of abnormality, can be determined based on the length of the above-mentioned stop time, and thus necessary maintenance measures can be established.

〔problem〕

By the way, in the above-mentioned conventional device, there is a problem that an erroneous maintenance measure may be established without properly determining the type of the cause of abnormality.

That is, under the condition that the number of workers is limited as described above, if a plurality of looms overlap and stop, a certain loom waits until the restoration work starts, and as a result,
This is because the stop time and the actual work time often do not match.

Therefore, an object of the present invention is to make it possible to accurately grasp the actual repair work time.

[Means for Invention]

The means of the present invention for solving the above-mentioned problems is an operation history recording apparatus for recording the time until the cause of the abnormality is repaired and restarted after the abnormality of the loom is abnormally stopped. A work start detector that sends a signal Sr, a start switch that sends a start signal S1 based on a starting operation, and a means 25 that records the time of sending the work start signal Sr and the start signal S1 Is.

[Action]

According to the above-mentioned means, the actual repair work time can be grasped from both records of the detection signal transmission time of the work start detector and the start signal transmission time of the start switch. Further, since the work start detector detects the repair work start operation and sends a signal, and the start switch detects the start operation and sends a signal, it does not require a special operation from the worker. These signals will definitely be emitted automatically.

〔Example〕

An example in which the present invention is applied to a fluid jet loom will be described with reference to FIGS. 1 and 2.

As in the conventional case, the main motor 1 for driving the loom
Is connected to a power source via a relay switch 2, and when a start preparation switch (not shown) is turned on and the start switch 3 is operated, a start command S1 is issued from the operation control section 21 of the control device 20 in the loom, and the relay is relayed. When the switch 2 is closed and the stop switch 4 is operated, a stop command S2 is issued from the operation control section and the relay switch is opened.

Further, the loom has an abnormality detector 5 as in the conventional one. In order to simplify the explanation, if the abnormality detector 5 is composed of two kinds of weft insertion error detector 6 and a trailing cut detector 7, from these detectors, the weft insertion error signal Sw or the trailing cut signal is detected. When Sy is issued, the operation control unit 21 processes these abnormal signals and issues the stop command S2, and the relay switch 2
To stop the loom. Further, when the above-mentioned stop is caused by an abnormal signal, the operation control unit 21 causes the display 22 to display the fact, and the worker performs the above-mentioned repair work on the loom for which the abnormal stop is displayed.

The work start detector 23 detects an initial operation performed by a worker during the above-mentioned repair work and transmits a detection signal. An operation detection switch or the like that responds to the clutch disengagement operation or the reverse operation of the loom can be used.

FIG. 3 illustrates a work start detector additionally installed in the water jet loom. Water jet looms are generally heddle 8 and reed 9
And has a gate-shaped frame 11 standing on the machine base 10 between
Attach the cover 12 to this frame so that it can swing
The sprayed water is prevented from scattering by covering the portion from 13 to the woven cloth 14. The cover 12 is always opened at the start of the repair work as shown by the chain double-dashed line.
The work start detector 23 in this example is composed of a limit switch fixed to the frame body 11. When the cover 12 is opened, it contacts the closed switch and is closed, and thereafter continuously outputs a detection signal.

The work control unit 21 is configured as a means for transmitting a work start signal, receives the detection signal, converts it into a single pulse rising at the beginning of the transmission, and outputs this single pulse as a work start signal Sr.

The operation history recording unit 25 of the control device 20 includes an abnormality discriminator 26, a memory 27 as a means for recording the time when a work start signal is transmitted, a calculator 28, a clock 29, and a record display 30.
And so on.

The abnormal state discriminator 26 inputs the abnormal state signal from the abnormal state detector 5 and discriminates the weft insertion error signal Sw or the cut-off signal Sy from their input paths or signal waveforms, and processes these signals individually. Then, the abnormality identification signals Sw ′ and Sy ′ having different signal levels or signal waveforms are output.

The memory 27 stores a start command S1, a stop command S2, an abnormality identification signal Sw ′ or Sy ′ indicating the cause of the stop, and a work start signal Sr.
Is recorded and stored on the time axis of the memory, and when the operator finishes the repair work and operates the start switch 3, the (re) start command S1 transmitted thereby is recorded.

The calculator 28 retrieves the record stored in the memory 27, calculates the transmission frequency of the stop command S2, and the transmission time interval of the work start signal Sr and the (re) start command S1 and returns them to the memory 27. Store. The clock 29 inputs a predetermined rest time and other work rest time to the arithmetic unit 28 in a time series, and the arithmetic unit subtracts this input time from the above time interval to calculate the true restoration work time. .

Thus, the record stored in the memory 27 is displayed on the record display 30 such as a display and provided for use by the worker.
Further, it is sent to the central control device 31 of the weaving factory and used for production management and maintenance management of the entire factory.

The embodiment is as described above. In this embodiment, the cause of the abnormality is identified and recorded, and the actual restorative time is determined by excluding the work rest time, so that more precise management can be performed.

〔effect〕

As described above, according to the present invention, the actual abnormality cause repair time is surely recorded, so an appropriate maintenance measure can be obtained based on the operation history.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention, FIG. 2 is an operation flowchart of the apparatus of FIG. 1, and FIG. 3 is a loom showing an embodiment of a work start detector of the present invention. It is a side view of a main part. 1 ... Main motor 3 ... Starting switch 4 ... Stop switch 5 ... Abnormality detector 20 ... Control device 21 ... Operation control unit (means for transmitting work start signal) 23 ... Work start detector 25 ... … Operation history recording unit 27 …… Memory (means to record the time when the work start signal is sent) 30 …… Record indicator S1 …… Start command S2 …… Stop command Sr …… Work start signal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsutoshi Ono 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) References Japanese Patent Publication No. 45-38384 (JP, B1)

Claims (1)

[Claims] 1. An operation history recording device for recording the time until the cause of the abnormality is repaired and restarted after the abnormality of the loom is abnormally stopped, based on a repair work start operation of the cause of abnormality.
The operation of the loom including a work start detector that sends a work start signal, a start switch that sends a start signal S1 based on a start operation, and a means 25 that records the time when the work start signal Sr and the start signal S1 are sent. History recording device.