JP2002275743A - Method for preventing development of weaving bar in weaving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control an amount of adjustment of relative position of cloth fell position and beating up position according to an action mode of automatic repair apparatus for dissolving a suspension cause of weaving machine and to deal with development of weaving bar different in each action mode. SOLUTION: In a weaving machine equipped with a weaving bar development preventing apparatus 30 for adjusting the relative position of cloth fell position and beating up position with suspension of a weaving machine 1 by a fixed amount of drive and preventing the development of weaving bar and an automatic repair apparatus (APR apparatus 20) for dissolving the suspension cause of the weaving machine 1, the amount of drive of the weaving bar development preventing apparatus 30 is controlled according to the action mode of the automatic repair apparatus (APR apparatus 20).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting a relative position between a weaving position and a beating position after a loom is stopped to prevent a weaving step from being caused by the loom being stopped.

[0002]

2. Description of the Related Art As the control for adjusting the relative position between the cloth fell position and the beating position, there is, for example, a fell control control or a kickback control by driving a feeding device and a winding device of a loom. The term "fell control control" as used herein means a control in which after the loom is stopped, one or both of the delivery motor and the take-up motor are driven by a predetermined amount in a direction to loosen the warp, and the cloth fell is moved to the take-up side. Also, kickback control means that before the loom restarts,
This refers to control in which one or both of the delivery motor and the take-up motor are driven by a predetermined amount to move the cloth fell to the delivery side. The following is a conventional technique relating to such control.

Japanese Unexamined Patent Publication (Kokai) No. 63-270842 discloses a method for preventing the occurrence of a weaving step in a loom, in which the driving amount and the driving direction of a delivery motor are changed in accordance with the cause of the stop. Japanese Unexamined Patent Publication (Kokai) No. 58-186640 discloses a "method of controlling a weaving step prevention device of a loom", which discloses that the weaving step prevention device is operated only in a predetermined case where the cause of stop is other than a poor weft insertion failure. . As described above, it is conventionally known that the adjustment of the cloth fell position caused by the stoppage of the loom is made different depending on the cause of the stoppage of the loom.

[0004]

According to the above-mentioned prior art, since the control amount is determined for each stop cause, when the stop cause is the same, the adjustment is always performed with the same control amount. However, according to this control, depending on the operation mode of the automatic repairing device for eliminating the cause of the stoppage, it cannot be said that it is always appropriate, and in some cases, it is not possible to cope with the occurrence of the weaving step. There are things you can't do.

Hereinafter, this will be described a case where the loom provided with the defective yarn removing device is stopped due to a poor weft insertion, and a case where the cloth fell position with respect to the beating position is adjusted by the fell control control or the kickback control. .

[0006] a) In a woven fabric factory, the defective yarn removing device may be set to an inoperative state depending on the situation at that time. When the defective yarn removing device is operated and when it is not operated, the operation mode of the loom after the stop is greatly different, and the stop time affecting the weaving stage is also greatly different. As described above, in each case of the operation and the non-operation of the defective yarn removing device, the state of each element causing the weaving step is different, and the appearance of the weaving step thus generated is different. Therefore, the fel control control or the kickback control using one type of control amount cannot appropriately cope with both the operation and the non-operation of the defective yarn removing device, and cannot effectively prevent the generation of all weaving steps.

B) Even when the defective yarn removing device is operated, the operation mode of the loom after stopping greatly differs between when the operation of removing the defective yarn is successful and when it is failed. Therefore, even in this case, as in the above, the state of each element that causes the weaving step is different, so that kickback control using one type of control amount cannot cope with each case, and all the weaving steps occur. Cannot be prevented.

Similarly, the same applies to the case where the operation of removing the defective yarn removing device in which the loom remains in the stopped state fails and the case where the defective yarn removing device is not operated. Even if the stop time is the same, kickback control using the same control amount cannot handle both cases.

Accordingly, an object of the present invention is to eliminate the cause of a stoppage of a loom in a loom for preventing a weaving step by adjusting a relative position between a weaving position and a beating position when the loom is stopped. Is to control the amount of adjustment of the relative position between the cloth fell position and the beating position in accordance with the operation mode of the automatic repair device of the above, so that it is possible to cope with the occurrence of different weaving steps for each operation mode.

[0010]

SUMMARY OF THE INVENTION In view of the above-mentioned object, the present invention adjusts the relative position between the weaving position and the beating position with a predetermined driving amount when the loom is stopped, and adjusts the position of the weaving step. In a loom equipped with a weaving step occurrence preventing device for preventing occurrence and an automatic repair device for eliminating the cause of stopping the loom, the driving amount of the weaving step occurrence preventing device is set to an operation mode of the automatic repair device. Is controlled accordingly.

In the above description, the meaning of "with the stop of the loom" includes not only during the stop of the loom but also before and after the stop. Further, the adjustment of the relative position is not limited to adjusting the cloth fell position with respect to the beating position as in the case of the fel control control, but also includes adjusting the beating position. The operation mode also includes the operation / non-operation of the automatic repair device and the success / failure of the repair operation. It should be noted that the automatic repairing apparatus to which the present invention is applied involves the movement (opening movement) of the warp in the automatic repairing.

With the above control, even if the cause of the stop is the same, the relative position between the cloth fell position and the beating position can be adjusted with a drive amount corresponding to the operation mode of the automatic repairing device, for example, the defective yarn removing device. Is performed. This makes it possible to cope with any of the weaving steps generated in different aspects for each operation mode, and to reliably prevent the weaving steps in all cases.

[0013] The weaving step prevention device drives at least one of the delivery motor of the delivery device and the winding motor of the winding device before the automatic repair device operates after the loom is stopped, and performs beating. Adjusting the weaving position relative to the position, or before restarting the loom due to the stoppage of the loom, and after operating the automatic repairing device, at least one of the sending motor of the sending device and the winding motor of the winding device. The motor is driven to adjust the cloth fell position relative to the beating position.

The automatic repairing device is a defective yarn removing device, and when the stop cause is a weft insertion failure, the drive amount of the weaving stage prevention device is adjusted according to the operation mode of the defective yarn removing device. Control.

[0015]

FIG. 1 shows a loom 1 according to the present invention. In the loom 1 of FIG. 1, the warp yarn 2 is sent out from the warp beam 3, passes through the tension roll 4 and the warp break detecting device 5, and forms an opening 7 by the opening movement of the heald 6.
Here, it is interlaced with the inserted weft 8 and the reed 9
The woven fabric 11 is beaten to zero. The woven fabric 11 is wound on a winding beam 15 via a guide roll 12, a friction roll 13, and a press roll 14.

The loom 1 is controlled by a loom control device 16. The loom control device 16 detects the rotation angle of the main shaft 17 by the encoder 18, and outputs a signal of the detected rotation angle, a warp break signal from the warp break detection device 5, a weft insertion failure signal from the weft feeler 19, and the like. As inputs, the control of a defective yarn removing device (hereinafter, referred to as an APR device) 20, a sending control device 21, and a winding control device 22 is executed.

The delivery control device 21 includes a tension roll 4
At the position, the tension of the warp 2 is detected by the tension detector 23, and the rotation of the delivery motor 24 is controlled to drive the warp beam 3 in the sending-out direction so that the detected tension becomes a target tension value. . The rotation of the delivery motor 24 is detected by the encoder 25 and is returned to the delivery control device 21.

The winding control device 22 includes the encoder 1
The rotation amount of the main shaft 17 is detected by 8 and the rotation of the winding motor 26 is controlled in accordance with the rotation amount of the main shaft 17 to drive the friction roll 13 in the winding direction. The rotation of the winding motor 26 is detected by the encoder 27,
It is returned to the winding control device 22.

FIG. 2 shows a weaving step prevention device 30 of the loom control device 16 for realizing the weaving step occurrence prevention method of the present invention. The weaving step prevention device 30 employs a fell control control and a kickback control by a sending device (a sending control device 21 / a sending motor 24) and a winding device (a winding control device 22 / a winding motor 26).

Fell control and kickback control are performed by a sending device (a sending control device 21 and a sending motor 2).
4) and take-up device (take-up control device 22 / take-up motor 2)
This is executed by driving either one or both of 6). In the method of preventing the occurrence of a weaving step according to the present invention, the relative position between the cloth fell position and the beating position is adjusted by performing only one or both of the fell control control and the kickback control.

The following description is based on the transmission device (transmission control device 2).
1. The feed motor 24) executes the fell control control and the kickback control, and sets the cause of the stoppage of the loom 1 to the weft insertion failure, and sets the automatic repair device to the APR device 20.
Is illustrated.

When only one of the Fell control control and the kickback control is performed, or both of them are performed, or when the control is performed, the sending device (the sending control device 21 and the sending motor 24) and the winding device (the winding device) Whether to drive one or both of the control device 22 and the winding motor 26) is determined by the setting means 28 of the weaving step prevention device 30.
And by the operation command means 29 by the operator.

The Fel control control means 31 comprises a setting device 33 and a control device 35. The setting device 33 has A
The Fel control amount according to each of the operation settings [operation (ON) or non-operation (OFF)] of the PR device 20 and the Fel control amount according to another stop cause, for example, warp breakage, are set.

The controller 35 discriminates the cause of the stop by the signal from the stop cause discriminating means 37 based on the operation command signal from the operation command means 29. The operation setting of the device 20 is determined, the Fel control amount corresponding to each is called from the setting device 33, and the drive amount corresponding to the Fel control amount is output to the transmission control device 21 as a command signal.

An operation command to the fel control control means 31 is issued based on the generation of a loom stop signal due to an abnormal signal. The abnormal signal here is a weft insertion failure signal (feeler signal) from the weft feeler 19.

The kickback control means 32 includes a setting unit 34
And a controller 36. In the setting unit 34, in addition to the kickback amount when the operation setting of the APR device 20 is ON, the operation setting of the APR device 20 is OFF, and the APR device 2
The kickback amount for each stop time according to the failure of the defective thread removing operation of 0 and other stop causes is set as drive data. This drive data sets a plurality of stop times at predetermined time intervals, and calculates a kickback amount for each stop time, for example, stop time: kickback amount = 0 to 5
Minutes: a, 6 to 10 minutes: b,... Generally, the stop time: kickback amount is set so as to increase stepwise, but does not necessarily have to increase at each time interval.

Based on the operation command signal from the operation command means 29, the controller 36 determines the cause of the stop by the signal from the stop cause determination means 37. If the weft insertion is poor, the APR operation setting means 38 The operation setting of the APR device 20 is determined, and when the operation setting of the APR device 20 is ON, the success or failure of the removal operation is determined based on a signal from the APR operation determination unit 39.

When the operation setting of the APR device 20 is ON, the controller 36 calls up the kickback amount corresponding to the kickback amount from the setting device 34, and the drive amount corresponding to the kickback amount as a command signal as a command signal. Output to

The operation setting of the APR device 20 is OFF, AP
In the case of the failure of the removing operation of the R device 20 and other causes of the stop, the controller 36 selects the drive data corresponding to each case, and measures the stop time of the loom 1 by the stop time measuring means 40, Based on the measurement result, the setting device 34
, A corresponding kickback amount in the drive data is called, and a drive amount corresponding to the kickback amount is output to the transmission control device 21 as a command signal.

An operation command to the kickback control means 32 is issued based on a command signal of completion of the removing operation by the APR device 20, a restart command signal by an operator's button operation, or the like.

FIG. 3 shows an operation sequence of the Fell control control. In this FIG.
1 starts the Fel control in response to the input of the operation command signal from the operation command means 29 accompanying the stop of the loom. First, the signal from the stop cause determination means 37 causes the stop cause weft insertion failure? Make a judgment. This stop cause weft insertion failure? When the determination is NO, the Fell control control means 31 determines the cause of the stop by the stop cause determination means 37, selects a drive amount corresponding to the cause of the stop from the Fell control amount, and sends the drive amount based on the selected drive amount. The motor 24 is driven to adjust the cloth fell position.

Also, the cause of the stop is poor weft insertion? By the judgment of, Y
At the time of ES, the Fel control control means 31 inputs the operation command signal of the operation command means 29 and
Operation setting of 0? Is determined, if YES, the delivery motor 24 is driven by the drive amount m1, and if NO, the delivery motor 24 is driven by the drive amount m2 to adjust the cloth fell position.

As described above, by the Fel control control,
The weaving step prevention device 30 is provided with the delivery motor 24 before the operation of the APR device 20 as an automatic repair device after the loom 1 is stopped.
To adjust the cloth fell position with respect to the beating position.

FIGS. 4 and 5 show the operation sequence of kickback control. In FIG. 4, the kickback control means 32
Starts kickback control according to the input of the operation command signal from the operation command means 29 after the loom is stopped, and the stop cause weft insertion failure by the signal from the stop cause determination means 37? YES, the operation of the APR device 20 by the signal from the APR operation setting means 38? When the judgment is YES, the process proceeds to the connector indicated by the number 1 with a circle in FIG. YES, APR device 20 operation setting? When the determination is NO, the process proceeds to the connector with the number 2 with a circle in FIG. When the determination is NO, the stop cause is determined by the signal of the stop cause determination means 37, and then the process proceeds to the connector indicated by the numeral 3 in FIG.

In FIG. 5, after the transition from the connector with the number 1 with a circle, the kickback control means 32 determines whether the APR operation determination means 39 succeeded in removing the defective yarn by operating the APR device 20? If the determination is YES, the sending motor 24 is driven by the drive amount n1 to adjust the cloth fell position with respect to the beating position. If the determination is NO, the drive data n2 is selected, the measured value of the stop time by the stop time measuring means 40 is input, the drive amount n2t is determined, and the delivery motor 24 is driven by the drive amount n2t. After that, the cloth fell position with respect to the beating position is adjusted, and the process ends.

In FIG. 5, after the shift from the connector indicated by the number 2 with a circle, the kickback control means 32 sets the drive data n
3 and input the measured value of the stop time to obtain the drive amount n3.
t is determined, the delivery motor 24 is driven by the drive amount n3t, the cloth fell position with respect to the beating position is adjusted, and the process is terminated.

Further, in FIG. 5, after shifting from the connector indicated by the number 3 with a circle, the kickback control means 32 selects appropriate drive data according to the cause of the stop, and inputs a measured value of the stop time. Then, the optimum drive amount is determined, the delivery motor 24 is driven by this drive amount, the cloth fell position with respect to the beating position is adjusted, and the process is terminated.

As described above, in the kickback control, the weaving prevention device 30 controls the delivery motor 24 before the restarting of the loom 1 due to the stoppage of the loom 1 and after the operation of the APR device 20 as the automatic repairing device. Drive to adjust the cloth fell position relative to the beating position.

The weaving step prevention device 30 is not limited to the above,
What is necessary is just to adjust the cloth fell position and the beating position accompanying the stop of the loom 1. For example, Japanese Patent Application Laid-Open No. 3-343743.
The device may change the beating position (beating point) immediately after the restart, or may be a device that displaces a guide roll and / or a tension roll by an actuator whose displacement can be adjusted.

The cause of the stop is not limited to poor encroachment, but may be any of the following cases. The defect of the weft other than the defective weft insertion is as follows. (1) In the case of automatic ejection to avoid weaving the seam between the yarn feeders, the automatic repairing device becomes an APR device or other automatic ejection device, and (2) the yarn feeding In the case of breakage, that is, in the case of yarn breakage between the yarn supplying body and the weft insertion nozzle, the automatic repair device is an automatic yarn breakage repair device (AFR device). Further, as the warp defect, (3) in the case of warp breakage, the automatic repairing device becomes a warp breakage automatic repairing device.

[0041]

According to the present invention, the drive amount of the weaving step prevention device is controlled in accordance with the operation mode of the automatic repair device. Therefore, even if the cause of the stop is the same, the drive amount is controlled in accordance with the operation mode of the automatic repair device. The relative position between the cloth fell position and the beating position is adjusted with the driving amount. This makes it possible to cope with any of the weaving steps that occur in different aspects for each operation mode, and it is possible to reliably prevent the weaving steps in all the modes.

Before the automatic repair device is operated after the loom is stopped,
In the embodiment in which at least one of the feed motor and the take-up motor is driven to adjust the cloth fell position with respect to the beating position, regardless of the operation mode of the automatic repairing device, the cloth fell position is adjusted with respect to the beating position. it can.

In the embodiment in which at least one of the delivery motor and the take-up motor is driven after the automatic repairing device is operated to adjust the cloth fell position with respect to the beating position, the defective yarn removing device as the automatic repairing device is used. The cloth fell position can be adjusted with respect to the beating position in accordance with the operation mode.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of a loom and a control system of the loom.

FIG. 2 is a block diagram of a loom control device.

FIG. 3 is a flowchart of the Fell control control.

FIG. 4 is a flowchart of the first half of kickback control.

FIG. 5 is a flowchart of the latter half of kickback control.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Loom 2 Warp 3 Warp beam 4 Tension roll 5 Warp break detecting device 6 Heald 7 Opening 8 Weft 9 Reed 10 Weaving 11 Woven cloth 12 Guide roll 13 Friction roll 14 Press roll 15 Winding beam 16 Loom control device 17 Main shaft 18 Encoder Reference Signs List 19 weft yarner 20 defective yarn removing device (APR device) as automatic repairing device 21 sending control device 22 take-up control device 23 tension detector 24 sending motor 25 encoder 26 winding motor 27 encoder 28 setting means 29 operation command means 30 weaving Step generation prevention device 31 Fell control control means 32 Kickback control means 33 Setter 34 Setter 35 Controller 36 Controller 37 Stop cause determining means 38 APR operation setting means 39 APR operation determining means 40 Stop time measuring means

Claims (4)

[Claims] 1. A weaving step prevention device for adjusting the relative position between a weaving position and a beating position according to a predetermined driving amount when a loom stops, and a weaving step prevention device for preventing the occurrence of a weaving step. A loom including an automatic repairing device for eliminating the cause, wherein the driving amount of the weaving stage prevention device is controlled in accordance with the operation mode of the automatic repairing device. Method. 2. The apparatus according to claim 1, wherein the weaving step prevention device drives at least one of a delivery motor of a delivery device and a take-up motor of a take-up device before the operation of the automatic repair device after the loom is stopped, and performs beating. 2. The method according to claim 1, wherein the weaving position is adjusted with respect to the position. 3. The weaving step generation preventing device, at least one of a sending motor of a sending device and a winding motor of a winding device before the restart of the loom due to the stoppage of the loom and after the operation of the automatic repairing device. 2. The method according to claim 1, wherein the motor is driven to adjust the cloth fell position relative to the beating position. 4. The automatic repairing device is a defective yarn removing device, and when the loom is stopped due to a poor weft insertion, the drive amount of the weaving step generation preventing device is adjusted according to the operation mode of the defective yarn removing device. The method for preventing weaving step occurrence in a loom according to claim 1, wherein