JPH06248535A - Lease defect detector - Google Patents

Abstract

PURPOSE:To obtain a lease defect detector capable of being easily installed to a loom having no function to detect lease defects. CONSTITUTION:A proximity switch 24 outputs a heald frame actuating signal corresponding to an opening and closing operation of a heald frame 3 and a heald frame actuating memory 25 memorizes the heald frame actuating signals. Before operating a loom 1, a counter 27 is set with a unit weave number for one cycle through a unit weave number driving panel 26 and counts timing signals showing rotations of a dobby machine 4 from the beginning of the loom 1 operation. A system pattern memory 28 memorizes the heald frame actuating signal for one cycle from the beginning. A checking operation unit 29 checks the present heald frame actuating signal with the corresponding heald frame signal in the system pattern memory and judges yes or no for a lease defect. When a lease defect is detected, a lease defect memory 30 outputs an abnormal signal to a computer controlled unit 5 and lets a display 31 indicate a line number of the heald frame 3 and a state of lease defects.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twill detecting device, and more particularly to a twill detecting device which can be easily added to a loom having no twill detecting function.

[0002]

2. Description of the Related Art Conventionally, as a loom, a computer control section for sequentially outputting a command signal for each unit structure to a dobby machine is provided, and this computer control section generates a traverse detection function, that is, a malfunction occurs in the dobby machine. A loom of a type having a function of detecting a drop is known (for example, see Japanese Patent Laid-Open No. 58-41932).

[0003]

However, according to the above-mentioned prior art, since the computer control unit is preliminarily incorporated with the crown detection function, another type in which the computer control unit does not have the crown detection function. However, there is a problem that it is difficult to newly add a twill detecting function to the loom.

In view of the above problems, the present invention provides a twill detecting device which can be easily added to a loom having no twill detecting function and can detect the twill. The purpose is to

[0005]

In order to solve the above problems, a traverse detecting device according to the present invention is a heald frame motion detector that outputs a heald frame operation signal corresponding to an opening operation and a closing operation of a heddle frame. And a tissue pattern memory for sequentially storing the heddle frame operation signals output from the heddle frame operation detector during the period from the start of the operation of the loom until the end of the first cycle. After the completion of one cycle, the heald frame operation signal sequentially output from the heald frame detector and the corresponding heald frame operation signal stored in the tissue pattern memory are collated, and a collation calculation is performed to determine whether or not a twill has occurred. And a section.

[0006]

When the loom starts to operate, the heddle frame operation detector sequentially outputs the heddle frame operation signals in accordance with the opening operation and the closing operation of the heddle frame. The tissue pattern memory sequentially stores the heald frame operation signals output from the heddle frame operation detector from the start of the operation of the loom to the end of the first cycle.

When the first one cycle is completed,
After that, the collation calculation unit collates the heald frame operation signals sequentially output from the heald frame detector with the corresponding heald frame operation signals stored in the tissue pattern memory as described above, and determines whether or not the heald occurs. Make a judgment.

The collation calculation unit that has detected the crossover causes the display to appropriately display the column number of the heddle frame in which the crossover has occurred.

Therefore, according to the present invention, it becomes possible to detect a traverse in a loom that does not have a traverse detection function, and it is possible to easily add to such a loom.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of application of the cross detection device according to one embodiment.

In FIG. 1, 1 is a weaving machine including a dobby machine, and 2 is a twill detecting device. Below, loom 1
And each structure of the fall detection device 2 will be described in order.

Loom 1 The loom 1 is a dobby machine 4 that opens and closes a plurality of heddle frames 3, and a command signal sequence that is preset for the dobby machine 4 in accordance with the unit structure that constitutes the fabric structure. , And a computer control unit 5 for outputting in synchronization with the rotation of the loom 1.

The dobby machine 4 has a structure corresponding to one heald frame 3 as shown in FIG. Since this dobby machine 4 is publicly known, each component will be briefly described below.

In FIG. 3, reference numeral 6 denotes a vibration axis which periodically vibrates in the direction of arrow a.

Reference numeral 7 represents an electromagnet that is magnetized / demagnetized based on a command signal from the computer control unit 5.

Reference numeral 8 periodically oscillates in the direction of arrow b due to the vibration of the vibrating shaft 6 when the electromagnet 7 is in the demagnetized state.
When the electromagnet 7 is in the magnetized state, the selector lever is held in the state of being attracted to the electromagnet 7 as shown by the solid line even if the vibration shaft 6 tries to move to the state shown by the chain double-dashed line. When the electromagnet 7 is in the demagnetized state, the selector lever 8 operates as shown in (b) with respect to the loom angle (a) as shown in FIG.

Reference numeral 9 is a selector lever 8 and a link mechanism 1.
When the selector lever 8 is swung in the combined direction of the arrow c direction and the arrow d direction by 0 and the selector lever 8 is attracted to the electromagnet 7, the vertical fish levers 11, 1 are moved at a predetermined timing.
2, while the selector lever 8 is not attracted to the electromagnet 7, the upper and lower fish levers 11, 12
Represents a pusher that does not press. When the electromagnet 7 is in the demagnetized state, the pusher 9 operates as shown in (c) with respect to the loom angle (a) as shown in FIG.

Reference numeral 11 denotes an upper fish lever which is swung in the direction of arrow e by the pusher 9 and the tension coil spring 13.

Reference numeral 12 denotes a lower fish lever which is swung in the direction of arrow f by the pusher 9 and the tension coil spring 13.

Numeral 14 periodically oscillates in the direction of arrow h by the periodic oscillation of the oscillating shaft 16 in the direction of arrow g, and in the direction of arrow i by the oscillation of the upper fish lever 11 in the direction of arrow e. It represents an upper hook that swings and engages with the upper knife 17 based on these combined movements and is held in the engaged state, released from the engaged state, or held in the disengaged state.
Reference numeral 15 indicates a periodic swing of the swing shaft 16 in the direction of arrow g to swing in the direction of arrow j, and a swing of the lower fish lever 12 in the direction of arrow f to swing in the direction of arrow k. , A lower hook that engages the lower knife 18 and is held in the engaged state, released from the engaged state, or held in the disengaged state based on the combined operation of these. Top and bottom hook 1
As shown in Fig. 2, 4 and 15 correspond to the loom angle (a)
It operates as shown in (d). In addition, as shown in FIG. 2 (d)
(n-1), (n), etc. represent the numbers of unit organizations.

In addition, 19 is a vertical lever having an upper knife 17 connected to the upper end and a lower knife 18 connected to the lower end, 20 is a stopper for the upper knife 17, 21
Is a stopper for the lower knife 18, 22 is a jack lever, and 23 is a wire rope for pulling the heald frame 3.

As shown in FIG. 2, the computer control unit 5 sends a command signal for each unit organization at a predetermined timing to the electromagnet 7 of the dobby machine 4, as shown by (e) with respect to the loom angle (a). Is output to.

Fall Detection Device 2 The fall detection device 2 includes a proximity switch 24 provided in one-to-one correspondence with a side motion device (not shown) of each heald frame 3. Each proximity switch 24 functions as a heald frame operation detector that outputs a heald frame operation signal corresponding to an opening operation or a closing operation of the heddle frame 3, and the heald frame operation memory 2
It is connected to 5. The heald frame operation memory 25 is configured to store a heald frame operation signal from each proximity switch 24, in other words, an opening operation or a closing operation of each heald frame 3.

Further, the twill detecting device 2 is provided with a unit-tissue number driving panel 26. The unit organization number input panel 26 is operated by an operator before the operation of the loom 1 is started, and the operator inputs the number of unit organizations for one cycle. A counter 27 is connected to the unit organization number input panel 26, and the unit organization number input through the unit organization number input panel 26 is set in the counter 27. The counter 27 is provided with a timing signal generating means (not shown) built in the dobby machine 4 after the loom 1 starts to operate (for example, a cam disposed on the rotating shaft of the dobby machine 4 and a cam disposed opposite to the cam). After the timing signal (see (f) in FIG. 2) from the proximity switch) is counted and the count value of this timing signal (f) becomes equal to the number of unit tissues, Is configured to prohibit the storage operation of the heald frame operation signal by the tissue pattern memory 28, which will be described later.

The twill detection device 2 also includes a tissue pattern memory 28. The tissue pattern memory 28 sequentially stores the heald frame operation signals stored in the heald frame operation memory 25 after the loom 1 starts to operate, and the counter 2
When 7 counts up as described above, the heald frame operation signal is not stored thereafter. In other words, the tissue pattern memory 28 is configured to store the heddle frame operation signal for the first one cycle after the loom 1 starts operating.

Further, the fall detection device 2 includes a collation calculation unit 29. After the completion of the first cycle, the collation calculation unit 29 synchronizes with the timing signal (f) from the timing signal generating means and the heald frame operation signal stored in the heald frame operation memory 25 and the tissue pattern. It is configured to compare with the corresponding heald frame operation signal stored in the memory 28 to determine whether or not the occurrence of the crossover has occurred ((g) in FIG. 2).
reference). The collation calculation unit 29 uses the timing signal
The forward / reverse rotation of the loom 1 is judged based on (f),
The above collation is configured to be performed only during normal rotation.

Further, the drop detection device 2 includes a drop memory 30. The memory 30 is configured to output an abnormal signal to the computer control unit 5 at the timing based on the timing signal (f) when the collation calculation unit 29 detects the memory. ing. The output timing of this abnormal signal is such that the loom 1 can be stopped in a section other than the section in which the reverse rotation of the loom 1 is prohibited (see FIG. 2 (h)). It is set. Further, the traverse memory 30 stores the column number of the heald frame 3 in which the traverse has occurred and the traverse state (which indicates whether the traverse occurs due to a mistake in adsorption of the electromagnet 7 or a traverse due to a mistake in separation). These are configured to be displayed on the display 31.

Reference numeral 32 represents a reset button for resetting the contents of the cross memory 30.

Next, the operation of the drop detection device 2 configured as described above will be described.

First, before starting the operation of the loom 1, the number of unit organizations for one cycle is set in the counter 27 through the unit organization number input panel 26 by the operator's operation.

Then, the operation of the loom 1 is started. When the loom 1 starts to operate, the proximity switch 24 outputs a heddle frame operation signal corresponding to the opening operation and the closing operation of the heddle frame 3, and the heddle frame operation signal is sent to the heddle frame operation memory 25 to the tissue pattern memory 28. It will be remembered sequentially. On the other hand, the counter 27 counts the timing signal (f).

When the count value of the counter 27 becomes equal to the number of unit tissues, the tissue pattern memory 2
8 finishes the storage operation of the heddle frame operation signal. Therefore, the heddle frame operation signal for the first one cycle after the loom 1 starts operating is stored in the tissue pattern memory 28.

After that, the collation calculation unit 29 starts its operation, and this collation calculation unit 29 receives the heddle frame operation signal stored in the heddle frame operation memory 25 and the tissue pattern memory 2.
8 is compared with the corresponding heald frame operation signal stored as described above, and the presence or absence of the occurrence of the crossover is sequentially determined.

When the collation calculation unit 29 detects the crossover, the crossover memory 30 outputs an abnormal signal indicating that the crossover has occurred to the computer control unit 5 at a timing based on the timing signal (f). The computer control unit 5, which has received this abnormality signal, carries out a process of stopping the loom 1 in the section excluding the section in which the reverse rotation is prohibited from the forward rotation. Further, the traverse memory 30 stores the column number of the heddle frame 3 in which the traverse has occurred and the traverse state (which indicates whether the traverse occurs due to an adsorption error of the electromagnet 7 or a detachment error). Display these 3
Display on 1.

After the loom 1 is stopped, the loom 1 is manually or automatically reversely rotated to pick up the weft and restart (see (i) in FIG. 2). Further, the stack memory 30 is reset by the reset button 32.

As described above, according to the twill detecting device 2 of this embodiment, the loom 1 does not have the twill detecting function.
In the above, it is possible to detect the drop and to easily add it to the loom 1.

The above-mentioned dobby machine 4 is a so-called computer dobby machine, but the present invention is not limited to this and can be applied to a mechanical dobby machine.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an application system of a twill detection device according to an embodiment.

FIG. 2 is a flowchart showing the operation of the system.

FIG. 3 is a block diagram of the dobby machine of the same system.

[Explanation of symbols]

 1 Loom 2 Twill detection device 3 Heald frame 24 Proximity switch (Heald frame operation detector) 28 Tissue pattern memory 29 Collation calculation unit

Claims (1)

[Claims] 1. A heddle frame motion detector that outputs a heddle frame motion signal corresponding to an opening motion and a closing motion of a heddle frame, and a heddle frame motion detector during the period from the start of the operation of the loom to the end of the first cycle. A tissue pattern memory for sequentially storing the heddle frame operation signal output from the heddle frame operation detector, and the heddle frame operation signal and the heddle frame operation signal sequentially output from the heddle frame detector after completion of the first one cycle. Collate with the corresponding heald frame operation signal stored in the tissue pattern memory,
A collapsing detection unit, comprising: a collation calculation unit that determines whether or not a collapsing has occurred.