JP2004052148A - Loom misoperation prevention device - Google Patents

Abstract

An object of the present invention is to prevent a decrease in fabric quality caused by restarting operation without repairing the cause of a stoppage by an operator.
The erroneous operation prevention device is configured to perform a forward or reverse rotation operation on a drive shaft of an opening device after a loom is stopped by a detection signal from an abnormality detection sensor to a rotation angle at which a weft inserted immediately before the stop can be removed. Is stored, and at least one of the second information indicating that the normal rotation or the reverse rotation operation has not been performed up to the operation start rotation angle of the loom, is stored. When the first or second information is stored at the time of input, the operation of the loom is prevented.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for preventing an operation from being erroneously restarted after a stop caused by an abnormality in a loom such as a weft stop or a stop.
[0002]
[Prior art]
When the loom stops (stops) at the loom, such as a weft stop caused by a poor weft insertion or a defective weft, or a stop caused by a defective warp such as a broken warp, an operator removes the defective yarn, removes the yarn. After the repair work for the cause of the stop (the cause of the stop) such as the repair of the cut, the operation is restarted.
[0003]
[Problem to be solved]
From the above, in general, the loom enables the operation button (operation command switch) for operating the loom while stopped. For this reason, in the conventional loom, if the operator operates the operation button even though the operator does not perform the repair, the operation of the loom is restarted. In such a case, the quality of the fabric is reduced.
[0004]
An object of the present invention is to prevent a decrease in fabric quality due to restarting operation without repairing the cause of a standstill by an operator.
[0005]
[Solutions, actions, and effects]
A first erroneous operation prevention device according to the present invention includes an abnormality detection sensor that detects an abnormality of a weft insertion, a weft or a warp, and stops a loom by an abnormality detection signal, and controls a loom by an operation command signal from an operation command switch. And a control device for operation. The control device indicates that, after the loom is stopped by the abnormality detection signal, the drive shaft of the shedding device does not execute the normal rotation or the reverse rotation operation up to the rotation angle at which the weft inserted just before the stop can be removed. Means for storing at least one of the first information and second information indicating that the forward rotation or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed, and the second information when the operation command signal is input. An operation inhibiting circuit for inhibiting operation of the loom when the first or second information is stored.
[0006]
According to the first erroneous operation prevention device, after the loom is stopped by the abnormality detection signal of the weft insertion, the weft or the warp, the drive shaft of the shedding device is rotated up to the rotation angle at which the weft inserted just before the stop can be removed. Until a reversing or reversing operation is performed, or until a forward or reversing operation is performed up to the operation start rotation angle of the loom, the restart of the loom is prevented. Deterioration of fabric quality due to erroneous operation after stoppage is prevented.
[0007]
The loom is a pile loom, and the operation preventing circuit is configured to perform the operation at the time of inputting the operation command signal, regardless of whether the generation time of the detection signal is a first pick or a loose pick when a pile is formed. The operation of the loom may be blocked when the first or second information is stored.
[0008]
A second malfunction prevention device according to the present invention includes an abnormality detection sensor that detects an abnormality in a weft insertion, a weft or a warp, and stops the loom by an abnormality detection signal, and controls the loom by an operation command signal from an operation command switch. And a control device for operation. The control device may further comprise, after the loom has been stopped by the abnormality detection signal, the drive shaft of the shedding device can be rotated right before the stop to a rotation angle at which the second weft one pick before the first weft inserted can be removed. At least one of first information indicating that the rotation or reverse operation has not been executed and second information indicating that the forward or reverse operation up to the operation start rotation angle of the loom has not been executed are stored. Means for preventing the operation of the loom when the first or second information is stored when the operation command signal is input.
[0009]
According to the second malfunction prevention device, after the loom is stopped by the weft insertion, the weft or warp abnormality detection signal, the drive shaft of the shedding device is moved one pick before the first weft inserted just before the stop. Loom operation is prevented from restarting until a forward or reverse operation up to the rotation angle at which the second weft can be removed or until a forward or reverse operation up to the operation start rotation angle of the loom is performed. Therefore, a decrease in the quality of the woven fabric due to an erroneous operation after stopping due to an abnormality in the weft insertion, the weft or the warp is prevented. Also, for a loom from which two wefts should be removed to prevent a weaving step before the loom is restarted, the weft removal is reliably performed, so that a weaving step due to an erroneous operation does not occur.
[0010]
A third erroneous operation prevention device according to the present invention stops an operation of a loom by an operation command signal from an operation command switch, while stopping the loom by an abnormality detection sensor that detects an abnormality of an ear braid or a catch code, and an abnormality detection signal. And a control device for operation. The control device is configured such that, after the loom is stopped by the abnormality detection signal, the drive shaft of the shedding device is rotated up to a rotation angle at which the breakage of the yarn forming device or the yarn end processing device using the ear braided yarn or the catch cord is repaired. At least one of the first information indicating that the forward rotation or the reverse rotation of the loom has not been executed, and the second information indicating that the jogging or the reverse rotation of the loom to the operation start rotation angle has not been executed. Means for storing, and an operation inhibiting circuit for inhibiting operation of the loom when the first or second information is stored when the operation command signal is input.
[0011]
According to the third erroneous operation prevention device, after the loom is stopped by the abnormality detection signal of the ear braid or the catch cord, the drive shaft of the opening device is moved to the rotation angle at which the repair work on the ear braid or the catch cord is performed. Until the forward or reverse operation is performed, or until the forward or reverse rotation operation to the operation start rotation angle of the loom is performed, the restart of the loom is prevented. Deterioration of the fabric quality due to a later malfunction is prevented.
[0012]
In any of the erroneous operation prevention devices, the control device detects that the command signal of the first or second condition is input, or detects that the precursor drive shaft has been rotated, and detects the first or second condition. And detecting means for generating a detection signal for storing the second information.
[0013]
A fourth erroneous operation prevention device according to the present invention includes an abnormality detection sensor that detects an abnormality of a yarn supply weft supplied for weft insertion, a loom being stopped by an abnormality detection signal, and an operation command switch. And a control device for operating the loom in response to the operation command signal. The control device, after stopping the loom by the abnormality detection signal, means for storing first information indicating that the operation when setting the weft in the weft length storage device or the weft insertion device is not executed, An operation inhibiting circuit for inhibiting the operation of the loom when the first information is stored when the operation command signal is input.
[0014]
According to the fourth malfunction prevention device, after the loom is stopped by the abnormality detection signal of the supplied weft supplied for weft insertion, the weft is set in the weft length measuring storage device or the weft insertion device. Until the operation is performed, the restart of the operation of the loom is prevented, so that the quality of the woven fabric is prevented from deteriorating due to the erroneous operation after the stop due to the abnormality in the weft supply.
[0015]
The fifth malfunction prevention device according to the present invention includes a first abnormality detection sensor that detects an abnormality in weft insertion, a weft or a warp, and a second abnormality detection sensor that detects an abnormality in an ear braid or a catch cord. A third abnormality detection sensor for detecting an abnormality of the weft weft supplied for weft insertion, and stopping the loom by an abnormality detection signal from the first, second or third abnormality detection sensor. And a control device for operating the loom in response to an operation command signal from the operation command switch. The control device may further comprise: after the loom is stopped by the abnormality detection signal from the first abnormality detection sensor, the drive shaft of the shedding device rotates forward or backward until the rotation angle at which the weft inserted immediately before the stop can be removed. Information indicating that the rotation has not been executed, second information indicating that the forward rotation or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed, the first weft inserted just before the stop. The third information indicating that the normal rotation or the reverse rotation operation up to the rotation angle at which the second weft can be removed one pick before is not executed, and the normal rotation or the reverse rotation operation up to the operation start rotation angle of the loom. The drive shaft of the opening device after the loom is stopped by the abnormality detection signal from the second abnormality detection sensor and at least one of the fourth information indicating the non-execution, and the ear forming device using the ear braid yarn Or the yarn end using the catch cord Information indicating that the normal rotation or the reverse rotation operation up to the rotation angle at which the yarn breakage of the control device is repaired has not been executed, that the jogging or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed. After the loom is stopped by the abnormality detection signal from the third abnormality detection sensor, the operation for setting the weft in the weft length measuring storage device or the weft insertion device is not executed. Means for storing at least one of the seventh information to be represented, and the first or second information being stored or the third or fourth information being stored when the operation command signal is input. An operation inhibiting circuit for preventing operation of the loom when the fifth or sixth information is stored or when the seventh information is stored.
[0016]
The fifth malfunction prevention device also prevents a decrease in the quality of the woven fabric due to a malfunction after the stop due to an abnormality in the weft insertion, the weft or the warp, or the ear braid, the catch cord or the supply weft.
[0017]
A sixth erroneous operation prevention device according to the present invention stops an operation of a loom by an operation command signal from an operation command switch, while stopping the loom by an abnormality detection sensor that detects an abnormality of a weft or a warp, and the abnormality detection signal. And a control device. The control device includes an operation inhibiting circuit that inhibits operation of the loom when the abnormality detection signal is in an input state when the operation command signal is input.
[0018]
According to the sixth erroneous operation prevention device, when the operation detection command signal is input, if the abnormality detection signal of the weft or the warp is in the input state, the operation restart of the loom is prevented. Deterioration of fabric quality due to erroneous operation after stoppage is prevented.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIG. 1, a malfunction preventing device 10 is used in, for example, an air jet loom that uses compressed air as a weft insertion fluid.
[0020]
In the air jet loom, the weft 14 wound around the yarn feeder 12 is measured by the length measuring and storing device 16 to a predetermined length, and is locked and stored by the locking pin device 18. It acts as a weft, and its tip is passed through the main nozzle 20.
[0021]
The weft passed through the main nozzle 20 is unwound for a predetermined period by the locking pin device 18, is ejected from the main nozzle 18 together with the compressed air, and is opened by the compressed air ejected from the plurality of sub-nozzles 22. Wefted.
[0022]
The inserted weft is beaten by the reed 26 before the weaving of the woven fabric 28, cut by the cutter 30, and cut from the weft portion connected to the length measuring and storing device 16 via the main nozzle 20.
[0023]
Of the warp yarns 24, a plurality of warp yarns 24a located at the end of the weft insertion side in the weaving width direction are used as catch cords, and a plurality of ear braid yarns 24b located inside the catch cord 24a and the weft insertion end. The plurality of ear braid yarns 24b located in the part are used as ear braid yarns formed by the ear forming device 32 in the tuft. The opening movement of the catch cord and the warp can be performed by an opening device that is connected to and driven by the main shaft 50 or an opening device that is driven by a motor that is driven in synchronization with the rotation of the main shaft 50.
[0024]
The air-injection loom also includes a pair of weft feelers 34 and 36 that are spaced apart in the weft insertion direction on the opposite side of the weft insertion side, and a cut or looseness of the warp 24 is detected. A dropper device 38, a catch code sensor 40 for detecting cutting or loosening of the catch code 24a, a yarn feeding weft sensor 42 for detecting cutting of the weft (yarn feeding weft) 14 drawn from the yarn supplying body 12, and each ear. And an ear-braid sensor 44 that is arranged on the forming device 32 and detects the cutting of the ear-braid yarn 24b.
[0025]
The weft feeler 34 is a known H1 feeler that detects the leading end of a properly inserted weft, and the weft feeler 36 is a known H1 feeler that detects when the inserted weft becomes a long pick, a broken body, or the like. H2 feeler. The catch code sensor 40 operates in the same manner as the dropper device 38, and detects cutting or loosening of the catch code 24a.
[0026]
As the ear forming device 32 and the ear assembly yarn sensor 44, those described in Japanese Utility Model Laid-Open Publication No. 62-30364 can be used. Such an ear forming device 32 forms a pair of ear-assembled yarn guiding holes on a turntable that is rotated in synchronization with the rotation of the main shaft 50, and forms a kinking structure by the rotation of the turntable. Such an ear forming device 32 may be connected to the main shaft 50 and driven, or may be driven by a motor driven in synchronization with the rotation of the main shaft 50.
[0027]
Although not described in detail, the ear braid sensor 44 corresponds to a yarn abnormality due to the rotating arm urged by a spring in opposition to the tension of the ear braid and the elastic force of the spring when the ear braid is abnormal. A sensor member for detecting that the ear braid has arrived at the position and outputting an abnormal signal.
[0028]
The ear forming device 32 and the ear assembly yarn sensor 44 may use devices and sensors other than the devices and sensors described above.
[0029]
Each of the weft feelers 34 and 36 and the ear assembly yarn sensor 44 functions as a weft sensor, and each of the dropper device 38, the catch code sensor 40, and the supply weft sensor 42 functions as a warp sensor. The detection signals of these sensors are supplied to the control device 46 of the erroneous operation prevention device 10 as abnormality detection signals.
[0030]
The control device 46 also serves as a main control device for controlling various devices of the loom, including a driving motor (spindle motor) 48 of the loom. For this reason, the control device 46 receives the rotation angle signal θ from the encoder 52 that detects the rotation angle of the main shaft 50, in addition to the above-described detection signal, and receives various set values set in the setting device 54, The rotation of the driving motor 48 is controlled based on the data such as the signal and the set value.
[0031]
Referring to FIG. 2, the control device 46 includes an input port 60, an output port 62, a central processing unit (CPU) 64 also serving as an operation prevention circuit, and a storage 66 for storing various information. I have.
[0032]
In the setting unit 54, various control data for the loom, upper conditions such as operation inhibition release conditions, and the like are set. The control circuit 46 receives the detection signals from the sensors 34, 36, 38, 40, 42, 44 and the rotation angle signal θ from the encoder 52 at an input port, and transmits various information set in the setting device 54. Read.
[0033]
The control device 46 also includes an operation command from an operation command button 68 for operating the loom, a jog command from the jog command button 70 for jogging the loom, a reverse rotation command from a reverse rotation command button 72 for reverse rotation of the loom, and a loom. From the stop command button 74 for stopping the operation, the unwinding command from the unwinding command button 76 for unwinding the weft from the length measuring and storing device, and one weft insertion into the length measuring and storing device 16 when the loom is stopped. The input port 60 receives a preliminary winding instruction from a preliminary winding instruction button 78 for extra winding and storing of a weft.
[0034]
The control device 46 controls the electromagnetic force for applying a braking force to the ear forming device 32, the switch 80 for opening and closing the current path to the driving motor 48, the driving motor 48, and the main shaft 50 based on the various signals, data, and instructions received. A switch 84 that opens and closes a current path to the brake 82, a current controller 88 that controls a current supplied to a drive motor 86 for the yarn guide of the length measuring and storing device 16, and a locking pin solenoid 90 of the length measuring and storing device 16. A predetermined control signal is supplied via the output port 62 to each of the drive circuit 92, the weft insertion device 94, and the warp shedding device 96 for controlling the energization of the motor.
[0035]
The control device 46 also controls an indicator light 98 for displaying the operation inhibition state. Thereby, the operator is notified that the vehicle is in the operation inhibition state. However, the operation inhibition state may be notified to the worker by text, an alarm sound or voice.
[0036]
The operation inhibition by the control device 46 is performed by software according to a program stored in the storage device 66, similarly to other control of the loom.
[0037]
Here, the operation of the erroneous operation preventing device 10 will be described below by taking as an example a case where a weft insertion error occurs during operation of the loom and an abnormality detection signal is output from the weft feeler 36 or 38.
[0038]
If a weft insertion error occurs, an abnormality detection signal is output from the weft feeler 36 or 38, so that the control device 46 first stops the loom.
[0039]
Next, the control device 46 automatically reverses the loom to a rotation angle at which the weft insertion error yarn can be removed and reverses the rotation to a rotation angle at which the loom is set to the standby state, and disables the operation command button 68 to operate the loom. Place in blocking state.
[0040]
The control device 46 notifies the worker that the loom is in the stopped state (standby state) via a not-shown indicator light or the like, and turns on the indicator light 98 to indicate that the operation is in the operation inhibition state. Even if the operation command is input by pressing the operation command button 68, the operation command is invalidated.
[0041]
When the worker arrives, the worker operates the reverse command button to reverse the loom to remove the weft inserted immediately before the stop of the loom (that is, the incorrect weft insertion). As a result, the weft insertion error yarn is exposed before the weaving and can be removed, and the preparation for the weft removal is completed.
[0042]
Then, when the operator operates the reverse rotation command button after removing the weft insertion error yarn from the open cloth, the controller 46 automatically or reversely rotates the loom to the rotation angle at which the operation of the loom is resumed. Reverse by command input. As a result, preparation for restarting the operation is completed. Thereafter, the control device 46 activates the operation command button 68 and restarts the operation of the loom when the operation command is input.
[0043]
The timing of disabling the operation command button 68 and setting the operation in the operation inhibition state can be any time from when the cause of the stoppage occurs to when the loom is stopped at the rotation angle at which the loom is in the standby state.
[0044]
On the other hand, the timing of releasing the operation inhibition state and enabling the operation command button 68 (that is, the operation command) is set at the rotation angle at which the operation of the loom is restarted, or the weft inserted just before the stop is used. Any time after the time when the reverse rotation operation is performed up to the removable rotation angle may be performed. The removal of the weft insertion error yarn may be performed by an operator or may be performed automatically.
[0045]
Next, the operation of the erroneous operation prevention device 10 will be described in more detail with reference to FIGS.
[0046]
If a stop cause occurs during normal operation of the loom (step 100), the control device 46 executes a loom stop step for stopping the loom (step 101). In step 101, first, the power supply to the driving motor 48 is stopped, and the braking force of the electromagnetic brake 82 is applied to the main shaft 50 to stop the loom (primary stop). The loom is reversely rotated automatically or manually to a rotation angle at which the loom can be removed, and the loom is stopped at a rotation angle at which the loom is brought into a standby state (secondary stop).
[0047]
Next, after the secondary stop, the control device 46 puts the loom in the stopped state (standby state) and turns on the operation inhibition flag (step 102). As a result, the operation command button 68 is invalidated, the indicator lamp 98 is turned on, and the loom is put into the operation inhibition state. The operation prevention flag is information indicating that an operation required for restoration or operation restart has not been executed, and the set state of this flag is set in the internal memory of the CPU 64 or the storage 66.
[0048]
In the above-described operation inhibition state, the control device 46 waits until an appropriate command button is pressed.
[0049]
Referring to FIG. 4, when an appropriate command button is pressed next (step 103), control device 46 determines whether or not the pressed command button is an operation command button (step 104).
[0050]
If the pressed command button is an operation command button, the control device 46 returns to step 103 and waits for another command button to be pressed because the operation is in the operation inhibition state.
[0051]
When another command button is pressed, the control device 46 causes the loom to perform an operation corresponding to the command button pressed for restoring the cause of the stop (step 105). Specifically, in the case of a weft insertion error, step 105 reverses the driving motor 48 and the main shaft 50 to a rotation angle 180 ° at which the weft inserted immediately before the stop can be removed, and reverses the opening device 96.
[0052]
Next, the control device 46 determines whether or not the condition for releasing the operation inhibition state (operation inhibition state unwinding condition) has been cleared (step 106). The condition for the determination is, for example, that the rotation is reversed to a predetermined rotation angle, more specifically, the rotation is reversed to a rotation angle of 300 ° at which the operation of the loom is restarted. The state unwinding condition can be set in advance via the setting unit 54. In this case, the control device 46 monitors the rotation angle signal θ of the main shaft 50 of the loom over the period in which the main shaft 50 is performing reverse rotation, and determines whether or not the set operation inhibition state unwinding condition is cleared. It can be performed.
[0053]
When the normal rotation or the reverse rotation has been completed, if the above-described operation inhibition state unwinding condition has not been cleared, the control device 46 returns to step 103 and waits for another command button to be pressed. Specifically, even if the operator stops the loom at 180 ° by the reverse operation in step 105, the operation inhibition state is still not cleared, so the process returns to step 103 and the next command button is pressed. Wait for that.
[0054]
Thereafter, after the operator removes the weft insertion error yarn, the command button is operated again (step 103), and the main shaft 50, which is the corresponding device, is reversed to the rotation angle 300 ° at which the operation of the loom is resumed (step 103). 105), when the controller 46 determines whether or not the set operation inhibition state unwinding condition has been cleared and detects that the rotation angle signal θ of the main shaft 50 has become 300 ° (step 106). The controller 46 turns off the operation inhibition flag, thereafter releases the operation inhibition state, and validates the operation instruction by operating the operation instruction button 68 (step 107).
[0055]
Referring to FIG. 5, when the operation command button 68 is pressed (step 108), the control device 46 restarts the operation of the loom because the operation inhibition state has already been released (step 109). Thereafter, the control device 46 performs a normal loom control.
[0056]
As described above, in the loom that removes the weft in response to the weft abnormality and restarts the operation, the operation inhibition state release condition is set via the setting device 54. Such an operation-unblocking state unwinding condition may be, for example, a timing when preparation for restarting the operation of the loom is completed, that is, any timing after the start of reverse rotation after the removal of the weft. More specifically, a condition that the rotation angle reaches 300 ° at which the loom resumes operation by the reverse rotation operation can be set as the operation inhibition state release condition.
[0057]
Therefore, in the step 106 for judging whether or not the operation inhibition condition is cleared in the flowcharts shown in FIGS. 3 to 5 described above, it is determined whether or not the operation inhibition state release condition set as described above is satisfied. Is determined each time the push button is operated.
[0058]
That is, after the removal of the weft, the operation command is invalidated until the reverse rotation operation to the rotation angle of 300 ° is performed to restart the operation of the loom, and then the process is switched to the next processing step by the determination in step 106, and the operation command is changed. Enabled. As a result, erroneous operation of the loom can be reliably prevented, and the inconvenience of reducing the woven fabric quality due to erroneous operation, which has conventionally been a problem, can be reliably prevented.
[0059]
As the operation inhibition state release condition, in addition to the above, at the time when preparation for weft removal is completed, that is, at any time after the start of the reverse operation for weft removal, more specifically, by the reverse operation for weft removal A rotation angle of 180 ° that can remove the second weft yarn may be used. Even when such a condition for canceling the operation inhibition state is set, the determination corresponding to the set condition is performed, so that the erroneous operation and the trouble caused by the operation can be prevented as described above.
[0060]
When the operation of the loom can be performed at a rotation angle of 180 ° at which the weft can be removed as described above, the risk of erroneous operation is reduced as compared with the case where the time when the preparation for operation restart is completed is set as the operation inhibition state release condition. Occurs. However, in practice, the worker can sufficiently recognize that the weft should be removed based on the operation inhibition state so far, so that the worker can perform the driving operation without removing the weft or perform the operation without removing the weft. Is less likely to forget the operation of reversing the rotation angle up to 300 ° to perform the driving operation. Therefore, even if the operation inhibition state is released at a rotation angle of 180 ° at which the weft can be removed, no significant problem occurs.
[0061]
FIG. 6 shows an example of the operation of the loom from the occurrence of the weft insertion error to the restart of the operation when the operation restart angle of the loom is 300 °. In this case, the weft insertion error may be based on any of the detection signals of the weft feelers 34 and 36.
[0062]
FIG. 6 shows an embodiment of the operation of the loom by the control device 46 when the loom is stopped by the detection signal from the weft feeler 38 or 40 and the control device 46 executes a restoration process for restoring a stop cause (abnormal weft insertion). Is shown.
[0063]
FIG. 6 also shows that, due to an error in weft insertion of the weft 14a indicated by a circle including an X in FIG. 6B, a cause of stoppage occurred at time T1, and the rotation angle of the weft 14a by 300 ° during the weft insertion cycle. Shows an example in which the braking device 82 is operated and the loom is stopped at 250 ° during the next weft insertion cycle of the weft 14b.
[0064]
As shown in FIG. 6C, when a weft insertion failure occurs, the control device 46 operates the electromagnetic brake 82 from around 300 °. Thus, the loom coasts to about 250 ° in the next weft insertion cycle and stops (primary stop).
[0065]
The controller 46 then automatically reverses the loom at a low speed up to 300 °. When the loom reaches 300 ° by the reverse rotation, the reverse rotation of the main shaft 50 is stopped (secondary stop), and a message that “weft stop has occurred” is displayed on display means (not shown) to wait for the arrival of the worker. It goes into a standby state. The rotation angle 300 ° of the main shaft 50 is an angle at which the warp is closed in order to prevent a weaving step from being caused by the elongation of the warp during standby.
[0066]
When the worker arrives, the worker immediately presses the reverse rotation command button in order to repair (remove) the adjacent miss thread 14a which is the cause of the stoppage and the weft insertion error. Thereby, control device 46 reverses main shaft 50 to 180 ° in response to the reverse rotation command. The rotation angle 180 ° of the main shaft 50 is an angle at which the warp is opened, and the miss yarn 14a is exposed before the weaving. In other words, at this point, the preparation for removing the weft is completed. Therefore, the operator can remove the miss thread 14a in the exposed state.
[0067]
Whether or not the preparation for removing the weft is completed can be identified based on whether or not the loom has been rotated at a low speed up to 180 ° after the first stop. Preferably, the determination of whether the weft removal preparation is completed or not is made by a guard sensor disposed on the cloth fell for ensuring the safety of the worker, or by preventing the weft insertion water flow from scattering as in a water jet loom. For this purpose, the output signal dense fog of various sensors such as a sensor for detecting the opening and closing of a cover door provided in the front may be added to the above-mentioned determination condition.
[0068]
Next, when the reverse rotation command button 72 is pressed again by the operator and the reverse rotation command is input to the control device 46 again, the control device 46 further reverses the loom at a low speed up to 300 °. At this point, since the preparation for restarting the operation is completed, the operation inhibition state is released, and the indicator 98 is turned off.
[0069]
In the embodiment shown in FIG. 6, the control device 46 may be configured to release the operation stop state when the reverse rotation command button 68 is pressed a predetermined number of times. However, whether or not the condition for canceling the operation inhibition state is satisfied by removing the miss yarn 14a is identified by AND conditions of pressing the reverse rotation command button 72 and that the loom has been rotated up to 300 °. Is more preferable.
[0070]
Next, when the operation command button 68 is pressed and an operation command is input, the control device 46 restarts the operation of the loom.
[0071]
Instead of performing the reverse rotation and the operation restart of the loom in the operation restart preparation based on the input of the reverse rotation command and the operation command by pressing the reverse rotation command button 72 and the operation command button 68, a corresponding command by pressing a command switch (not shown) is issued. You may make it perform automatically and continuously based on an input. In this case, the operation inhibition state is automatically released when the command button is operated or the main shaft 50 is rotated up to 300 °.
[0072]
FIG. 6 shows an example in which one miss yarn 14a is removed in the case of a weft insertion mistake. However, the miss yarn 14a and the weft 14 inserted before it may be removed. Also, in cases other than a weft insertion error such as a stoppage or a yarn feeding weft error, one or more weft yarns may be removed regardless of the cause of a standstill.
[0073]
Also, in the embodiment shown in FIG. 6, the weaving machine is reversed in both the preparation for removing the weft and the preparation for restarting the operation. However, as shown in FIG. After the command button is pressed, the loom may be normally rotated at a low speed from 180 ° to 300 ° at a low speed, and then the operation inhibition state may be released. In this case, a new weft is inserted into the woven fabric instead of the miss yarn.
[0074]
The embodiment shown in FIG. 6 is an example of plain weave, but can also be applied to pile weave. The pile fabric is generally formed by weaving a pile weave and a ground weave in a predetermined length. For example, in a three-weft towel weave, a pile is formed by two loose picks and one first pick.
[0075]
In the case of the pile fabric as described above, regardless of whether the loose pick or the first pick is stopped or stopped, as described above, the loom is rotated forward or backward to the rotation angle at which the weft can be removed. By blocking the operation of the loom until the preparation for removing the weft is completed, the operator can reliably perform the weft removal operation.
[0076]
FIG. 7 shows an embodiment in which two wefts are removed regardless of the cause of the stop and the cause of the stop is repaired. In this embodiment, in a woven fabric such as a glass woven fabric using glass fibers, the effect of preventing the generation of a weaving step is enhanced.
[0077]
In FIG. 7, when one of the causes of the stoppage occurs, the control device 46 activates the electromagnetic brake 82 from 300 °. Thus, the loom coasts to about 250 ° in the next weft insertion cycle and stops (primary stop).
[0078]
The controller 46 then automatically reverses the loom at a low speed up to 300 °. When the reverse rotation reaches 300 ° as a result of the reverse rotation, the loom stops the reverse rotation of the main shaft 50 (tertiary stop), and displays information that “weft stoppage has occurred” on display means (not shown) to display the information of the operator. It is in a waiting state waiting for arrival. The rotation angle 300 ° of the main shaft 50 is an angle at which the warp shedding is closed in order to prevent the generation of a weaving step, as described above.
[0079]
When the worker arrives, the worker operates the reverse rotation command button to remove the weft inserted just before the stop. Thereby, the control device 46 reverses the main shaft 50 in response to the reverse rotation command. When the rotation angle reaches 180 °, the reverse rotation is stopped (secondary stop). As described above, the rotation angle 180 ° of the main shaft 50 is an angle at which the warp shedding is opened, and at this rotation angle, the miss yarn 14a is exposed before the weaving. For this reason, the operator can remove the first weft that is exposed.
[0080]
Next, when the reverse rotation command button 72 is pressed by the operator, the control device 46 further reverses the loom at a low speed up to 300 ° and stops it (fourth stop).
[0081]
Next, the operator presses the reverse rotation instruction button to further remove the previous weft. Accordingly, the control device 46 further reverses the loom at a low speed to 180 °, at which the previous weft can be removed, and stops the loom by receiving the reverse rotation command (fifth stop). At this point, the preparation for weft removal is completed, and the previous weft is removed by the operator at the rotation angle position.
[0082]
The reverse rotation from the position where the first weft can be removed (the rotation angle of the secondary stop) to the position where the previous weft can be removed (the rotation angle of the fifth stop) may be performed continuously.
[0083]
Next, when the reverse rotation command button 72 is further pressed by the operator and a reverse rotation command is input to the control device 46, the control device further reverses the loom at a low speed up to 300 ° and stops the loom (sixth stop). At this point, since the preparation for restarting the operation is completed, the operation inhibition state is released, and the indicator 98 is turned off.
[0084]
Also in the embodiment shown in FIG. 7, the control device 46 may be configured to release the operation inhibition state when the reverse rotation command button 72 is pressed a predetermined number of times.
[0085]
Next, when the operation command button 68 is pressed and an operation command is input, the control device 46 restarts the operation of the loom.
[0086]
Regardless of the cause of the stop, as described above, even in a loom in which two wefts are removed and the machine is restarted, the operation inhibition state release condition set in the control device 46 is set via the setter 54. .
[0087]
Such an operation inhibition state release condition may be, for example, a time when the preparation for restarting the operation of the loom is completed, that is, an arbitrary time after the start of reverse rotation after the removal of the second weft. More specifically, the condition for canceling the operation inhibition state may be that the rotation angle of the loom reaches 300 ° at which the loom starts operating by the reverse operation for the second weft.
[0088]
In this case, in step 106 of the flowcharts shown in FIGS. 3 to 6 for determining whether or not the operation inhibition condition has been cleared, it is determined whether or not the set operation inhibition state release condition has been satisfied. , Every time a push button is operated. Eventually, after the second weft is removed, the operation command is invalidated until the reverse rotation operation to the rotation angle of 300 ° is performed to restart the operation, and then the next processing step is performed by the determination in step. The operation command is validated by switching. For this reason, erroneous operation can be reliably prevented.
[0089]
As the condition for canceling the operation inhibition state, the time when the preparation for removing the weft is completed, that is, any time after the start of the operation for removing the second weft, more specifically, the time for removing the second weft is removed. The condition may be that the main shaft reaches a rotation angle of 180 ° at which the second weft can be removed by the reversing operation. In this case, erroneous operation and inconvenience caused thereby can be prevented by determining whether or not the rotation angle has reached the point at which the second weft can be removed.
[0090]
By doing so, as described above, the operation of the loom can be started from the rotation angle of 180 ° at which the second weft can be removed. In comparison with the case, there is a danger of a malfunction. However, in practice, the worker can sufficiently recognize that the weft should be removed based on the operation inhibition state so far, so that the worker can perform the driving operation without removing the weft or perform the operation without removing the weft. Is less likely to forget the operation of reversing the rotation angle up to 300 ° to perform the driving operation. Therefore, even if the operation inhibition state is released at a rotation angle of 180 ° at which the weft can be removed, no significant problem occurs.
[0091]
FIG. 8 shows a case where a repair process is performed to repair the cause of a standstill (ear braid abnormality) at the time of a standstill due to the output of an abnormality detection signal (for example, an ear break thread break signal) by the ear braid sensor 44. One embodiment of the operation of the loom by the control device 46 will be described.
[0092]
When the abnormality of the ear braid occurs at time T1, the control device 46 first activates the electromagnetic brake 82 from 300 °. Thus, the loom coasts to about 250 ° in the next weft insertion cycle and stops (primary stop).
[0093]
The controller 46 then automatically reverses the loom at a low speed up to 300 ° to put the loom into a standby state.
[0094]
Next, when the jogging command button 70 is pressed and the jogging command is input, the control device 46 jogs the loom to an angle at which the restoration process can be performed and stops the loom (secondary stop). This completes the preparation for the restoration process, and thus allows the loom to be in the operation inhibition state. At the rotational position of the loom, a process of repairing an abnormal ear braid is performed.
[0095]
Next, when the reverse rotation command button 72 is pressed to input a reverse rotation command, the control device further reverses the loom at a low speed up to 300 °.
[0096]
In the embodiment shown in FIG. 8, the control device 46 releases the operation stop state when the inching command button 72 or the reverse rotation command button 74 is pressed.
[0097]
Next, the control device 46 restarts the operation of the loom when the operation command button 68 is pressed and the operation command is input.
[0098]
As described above, in a loom that involves a forward rotation or a reverse rotation operation when the abnormality of the ear braid is restored, the operation inhibition state release condition set in the control device 46 is set via the setting device 54.
[0099]
As such a condition for canceling the operation inhibition state, a rotation operation to a rotation angle at which the operation of the loom is resumed after the repair operation of the ear braid is performed. A condition in which the rotation angle reaches 300 ° at which the operation of the loom is resumed by the moving operation or the reverse rotation operation may be set as the operation inhibition state release condition.
[0100]
In this case, in step 106 of the flowcharts shown in FIGS. 3 to 6 for determining whether or not the operation inhibition condition has been cleared, it is determined whether or not the set operation inhibition state release condition has been satisfied. , Every time a push button is operated. Eventually, the operation command is invalidated until the rotation angle at which the inching or reverse rotation is executed is reached, and thereafter, the operation is switched to the next processing step by the determination in step 106, and the operation command is made valid. For this reason, it is possible to reliably prevent erroneous operation when the ear braid is abnormal.
[0101]
As a condition for canceling the operation inhibition state, a rotation operation to a rotation angle at which the repair work of the ear braid is easy to perform, more specifically, that the jogging operation or the reverse operation is performed after the break of the ear braid, or that the loom is Any rotation angle that is arbitrarily determined between the rotation angle 300 ° in the standby state and the rotation angle located at the top dead center where the bobbin of the ear braid yarn on the side where the abnormality has occurred is easily repaired can be used.
[0102]
By doing so, the determination is made in response to such an operation inhibition state canceling condition, so that the erroneous operation can be reliably prevented as described above. In this case, there is a risk of erroneous operation as compared with the case where the time when the preparation for the operation restart is completed is set as the operation inhibition state release condition.
[0103]
However, in practice, the operator can already fully recognize that the abnormality of the ear braid should be repaired by the operation inhibition state so far, so that the operator does not need to repair such abnormality. It is unlikely that the driver will perform the driving operation or forget the operation of jogging or reversing the rotation angle to 300 ° to resume the driving operation. Therefore, even if the above setting is performed, it does not matter much.
[0104]
The embodiment of FIG. 8 can be applied also when the dropper device 38 or the catch code sensor 44 outputs an abnormality detection signal.
[0105]
The opening device 96 may be driven by being connected to the main shaft 50, or may be driven by a dedicated motor separate from the main shaft 50, such as a pick finder device or an electric opening device. Is also good.
[0106]
In that case, the rotation (forward rotation and reverse rotation) with respect to the main shaft may be read as the rotation (forward rotation and reverse rotation) with respect to the opening device, respectively. In the case of a woven fabric having a small number of opening repeats such as plain weave and twill weave, For example, instead of reverse rotation for weft removal or the like, the rotation may be realized by normal rotation of the main shaft or the drive shaft of the shedding device.
[0107]
Further, in the case where the rotation is accompanied by the rotation of the main shaft, the condition for canceling the operation inhibition state set via the setting device 54 is provided that the rotation angle of the main shaft to be repaired is reached. If the program is set so that the operation is automatically performed, the operation can be set as a condition for canceling without the operator confirming the rotation angle.
[0108]
FIG. 9 shows a repair process for repairing a stall cause (abnormality of the weft supply weft) at the time of a stop due to the output of the abnormality detection signal (for example, the breakage signal of the weft supply weft) by the yarn supply weft sensor 42. One embodiment of the operation of the loom by the control device 46 will be described.
[0109]
When an abnormality of the yarn supply weft occurs at time T1, the control device 46 first activates the electromagnetic brake 82 from around 300 ° in response to an abnormality signal from the sensor 42. Thus, the loom coasts to about 250 ° in the next weft insertion cycle and stops (primary stop).
[0110]
The controller 46 then automatically reverses the loom at a low speed up to 300 °. At this rotational position, since the preparation for the repair processing is completed, the repair processing for the yarn supply weft abnormality is performed.
[0111]
Next, the control device 46 restarts the operation of the loom when the operation command button 68 is pressed and the operation command is input.
[0112]
In the example shown in FIG. 1, the length measuring and storing device 16 is of a type in which a yarn guide is rotated to wind a weft 14 having a predetermined length around a drum. More specifically, it includes a yarn guide that is driven to rotate along the peripheral surface of the fixed drum by an electric motor independent of the main shaft motor, and a locking pin that is driven by an electromagnetic solenoid to advance and retreat with respect to the peripheral surface of the fixed drum. It is a known weft length measuring and storing device.
[0113]
Such a weft length measuring and storing device has a function of rotating a yarn guide in advance by a predetermined amount to wind a weft around a fixed drum (preliminary winding function), and a function of advancing a locking pin prior to operation of a loom. And a push button that allows the user to manually execute the function of unwinding (the unwinding function).
[0114]
Therefore, in the process of repairing the yarn supply weft abnormality, the unwinding command button 76 is pressed to remove the weft remaining on the fixed drum, and the preliminary winding command button 78 is pressed to pre-wind a new weft. Settings such as setting to the latter weft insertion nozzle are performed.
[0115]
The operation of the unwind command button 76 corresponds to the completion of the restoration preparation, and the operation of the preliminary winding command button 78 corresponds to the completion of the operation restart preparation.
[0116]
As described above, in a loom that involves some operation of the length measuring and storing device when the abnormality of the yarn supply weft is repaired, the operation inhibition state release condition set in the control device 46 is set by the setter 54 in the same manner as described above. Is set via
[0117]
As such a condition for canceling the operation inhibition state, the cancel command button 76 and the preliminary winding command button 78 described above may be operated. In this case, in step 106 of the flowcharts shown in FIGS. 3 to 6 for determining whether or not the operation inhibition condition has been cleared, it is determined whether or not the set operation inhibition state release condition has been satisfied. , Every time a push button is operated. Eventually, the operation command is invalidated until the weft unwinding or the preliminary winding is executed, and thereafter, the process is switched to the next processing step by the determination in step 106, and the operation command is made valid. For this reason, it is possible to reliably prevent erroneous operation when an abnormality occurs in the yarn supply weft.
[0118]
In the embodiment shown in FIG. 9, the control device 46 releases the operation stop state when the unwinding instruction button 76 or the preliminary winding instruction button 78 is pressed. However, an operation for another device such as a weft insertion device may be used to release the operation stop state. More specifically, an operation signal for causing the jet airflow from the main nozzle to be different between a normal time and a restoration time as in an air jet loom may be used. Further, instead of the output of the command means, the output of a sensor for detecting whether or not the repair work has been performed may be used.
[0119]
The length measuring and storing device may be another type of device. Further, the yarn supply weft sensor 42 is of a type that detects the weft supplied to the length measuring and storing device, but another type of sensor may be used. In addition, the installation location of the sensor is not limited to the illustrated position, and may be provided at any location on the yarn path.
[0120]
In order to cope with multiple stop causes, the above-mentioned erroneous operation prevention technology including restoration processing is stored in advance as a software program for each monitoring target, and erroneous operation prevention is performed according to the cause of the stalled stop. What is necessary is just to make the controller 46 execute the technique.
[0121]
As described above, the processing related to the operation inhibition may be performed by hardware instead of processing by software. For example, when the restoration involves some rotation of the loom, the following can be performed.
[0122]
An operation permission circuit shown in FIG. 10 can be disposed between the operation command button 68 and the control device 46 in the apparatus shown in FIG.
[0123]
In the case of a malfunction prevention device that executes the malfunction prevention technology shown in FIG. 9, the operation permission circuit 110 is connected to the input of the control device 46, and the timing signal generator 112 that generates various timing signals is connected to the operation permission circuit 110. A timing setter 114 for connecting to an input and setting various timings can be connected to the timing signal generator 112.
[0124]
In the timing setting unit 114, various timings such as the rotation angle of the main shaft to be stopped for the restoration process, the preparation for the restoration process, the preparation for the restart of the operation, and the like are set as the rotation angle of the main shaft.
[0125]
The timing signal generator 112 receives the rotation angle signal θ of the main shaft 50 from the encoder 52, and outputs a timing signal to the operation permission circuit 110 every time the rotation angle of the main shaft 50 reaches the angle set in the timing setting device.
[0126]
The operation permitting circuit 110 outputs a driving permitting signal S1 indicating that the condition for releasing the operation inhibition state is satisfied when the condition for canceling the operation inhibiting condition is satisfied. And an AND circuit 118 that outputs the AND signal of the control signal to the control device 46 as a driving operation signal S2.
[0127]
The discrimination circuit 116 receives the detection signal S3 from the sensors 34, 36, 38, 40, 42, and 44, the output signal of the timing signal generator 112, the release command from the release command button 76, and the preliminary winding command button 78. And a loom stop signal S4 (or an automatic reverse rotation completion signal S5) from the controller 46.
[0128]
The discriminating circuit 116 is turned off by the input of the loom stop signal S4 (or the automatic reversal completion signal S5), and thereafter, when repairing a weft abnormality or the like involves rotation of the loom, the loom is moved to the operation restart angle. The operation permission signal S1 is turned on by reaching (or performing the operation thereof), and turned on by the input of a command signal from the preliminary winding command button when the yarn supply weft is abnormal. Is output.
[0129]
The discriminating circuit 116 reaches the angle at which the repair is performed in response to the cause of the stop such as the removal of the weft insertion error yarn (or the operation is performed), as in the above-described embodiment. The operation permission signal S1 may be turned on.
[0130]
Therefore, the operation permission circuit 110 releases the operation inhibition state when the operation permission signal S1 is generated, and then outputs the operation signal S2 to the control device 46 when an operation command is input.
[0131]
The circuit shown in FIG. 10 can also be applied to the erroneous operation prevention technology shown in FIGS.
[0132]
Further, the release of the operation inhibition state can be determined using the output signal of the sensor when the operation command button is pressed. 1 and 2 can be realized by the software processing shown in FIG. In FIG. 1, the weft sensors 34, 36, 42 and the warp sensors 38, 40, 44 are of a type that always outputs an abnormality detection signal during abnormality detection.
[0133]
In FIG. 11, when the operator presses the operation command button 68 after the restoration process is completed (step 120), the control device 46 detects that the weft sensors 34, 36, 42 and the warp sensors 38, 40, 44 are abnormal. It is determined whether or not it has been performed (step 121).
[0134]
If the result of determination in step 121 is that at least an abnormal signal has been output from the sensor that caused the stop, the operation is not performed, and the control device 46 returns to step 120 and presses the operation command button 68 to perform repair work. Wait for press. At this time, it is preferable to indicate this to the operator by indicating it to the display lamp 98.
[0135]
However, if at least the sensor that caused the stop does not output an abnormal signal, the control device 46 turns off the operation inhibition flag to release the operation inhibition state, and then proceeds to the step of FIG. 5 (step 122). .
[0136]
As described above, the processing related to the operation inhibition may be performed by hardware instead of processing by software. For example, an operation permission circuit shown in FIG. 12 can be arranged between the operation command button 68 and the control device 46 in the apparatus shown in FIG.
[0137]
In the case of the malfunction prevention device that executes the malfunction prevention technology illustrated in FIG. 9, the operation permission circuit 130 can be connected to the input of the control device 46.
[0138]
The operation permission circuit 130 includes a determination circuit 132 to which an abnormality detection signal from the sensors 38, 42, and 44 and an operation command from the operation command button 68 are input, a delay circuit 134 for delaying the operation command for a predetermined time, and a determination circuit 132 And an AND circuit 134 that outputs an AND signal of both output signals S1 and S6 of the delay circuit 134.
[0139]
The determination circuit 132 determines whether or not an abnormality detection signal is output from the sensors 38, 42, and 44 when an operation command is input from the operation command button. If the abnormality detection signal is not output, the operation inhibition state is set. The operation permission signal S1 is released and output to the AND circuit 136.
[0140]
Therefore, the discrimination circuit 130 outputs the driving operation signal S2 to the control device 46 after the elapse of the delay time of the delay circuit 134 when the driving command is input. In other words, while the abnormality detection signal is output from the sensors 38, 42, and 44, the determination circuit 132 invalidates the operation command and maintains the operation inhibition state.
[0141]
The operation inhibiting function may be disabled by a changeover switch or the like as necessary, for example, at the time of weaving or adjustment operation of the loom. Further, it is more convenient to provide a reset button for resetting the operation prevention function so that the operator can recognize the state of the loom and reset the operation prevention function so that the operation can be immediately performed.
[0142]
The present invention can be applied not only to an air jet loom and a liquid jet loom, but also to a shuttleless loom such as a rapier loom, and can also be applied to a shuttle loom.
[0143]
The present invention is not limited to the above embodiments, and can be variously modified without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a view showing an embodiment of a loom provided with a malfunction prevention device according to the present invention.
FIG. 2 is an electric circuit diagram showing one embodiment of a malfunction prevention device according to the present invention.
FIG. 3 is a flowchart illustrating the operation of the apparatus shown in FIG. 2;
FIG. 4 is a view showing a flowchart for explaining the operation following FIG. 3;
FIG. 5 is a view showing a flowchart for explaining the operation following FIG. 4;
FIG. 6 is a view showing a state of a loom for explaining a first embodiment of a malfunction prevention technique according to the present invention.
FIG. 7 is a diagram showing a state of a loom for explaining a second embodiment of the erroneous operation prevention technology according to the present invention.
FIG. 8 is a view showing a state of a loom for explaining a third embodiment of the erroneous operation prevention technique according to the present invention.
FIG. 9 is a diagram showing a state of a loom for explaining a fourth embodiment of the erroneous operation prevention technique according to the present invention.
FIG. 10 is an electric circuit diagram showing a fifth embodiment of the erroneous operation prevention technique according to the present invention.
FIG. 11 is a diagram showing a flowchart.
FIG. 12 is an electric circuit diagram showing an embodiment of a device for preventing malfunction according to a sixth embodiment.
[Explanation of symbols]
10 Misoperation prevention device
14 weft
16 Measurement and storage device
20 Main nozzle
22 sub nozzle
24 warp
24a catch code
24b ear braid
26 Reed
28 Woven cloth
30 cutters
32 Ear forming device
34,36 weft feeler
38 Dropper
40 catch code sensor
42 Yarn feed weft sensor
44 Ear Braid Sensor
48 Drive motor
50 spindle
52 encoder
82 Electromagnetic brake

Claims (8)

Weft insertion, an abnormality detection sensor for detecting an abnormality of the weft or warp, and a control device for stopping the loom by the abnormality detection signal and operating the loom by the operation command signal from the operation command switch,
The control device indicates that, after the loom is stopped by the abnormality detection signal, the drive shaft of the shedding device does not execute the normal rotation or the reverse rotation operation up to the rotation angle at which the weft inserted just before the stop can be removed. Means for storing at least one of the first information and second information indicating that the forward rotation or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed, and the second information when the operation command signal is input. A device for preventing operation of the loom when the first or second information is stored. The loom is a pile loom, and the operation preventing circuit is configured to perform the operation at the time of inputting the operation command signal, regardless of whether the generation time of the detection signal is a first pick or a loose pick when a pile is formed. The erroneous operation prevention device according to claim 1, wherein the operation of the loom is prevented when the first or second information is stored. Weft insertion, an abnormality detection sensor for detecting an abnormality of the weft or warp, and a control device for stopping the loom by the abnormality detection signal and operating the loom by the operation command signal from the operation command switch,
The control device may further comprise, after the loom has been stopped by the abnormality detection signal, the drive shaft of the shedding device can be rotated right before the stop to a rotation angle at which the second weft one pick before the first weft inserted can be removed. At least one of first information indicating that the rotation or reverse operation has not been executed and second information indicating that the forward or reverse operation up to the operation start rotation angle of the loom has not been executed are stored. And a means for preventing operation of the loom when the first or second information is stored when the operation command signal is input. An abnormality detection sensor that detects an abnormality of the ear braid or the catch cord, and a control device that stops the loom with the abnormality detection signal and operates the loom with the operation command signal from the operation command switch,
The control device is configured such that, after the loom is stopped by the abnormality detection signal, the drive shaft of the shedding device is rotated up to a rotation angle at which the breakage of the yarn forming device or the yarn end processing device using the ear braided yarn or the catch cord is repaired. At least one of the first information indicating that the forward rotation or the reverse rotation of the loom has not been executed, and the second information indicating that the jogging or the reverse rotation of the loom to the operation start rotation angle has not been executed. An apparatus for preventing erroneous operation of a loom, comprising: means for storing; and an operation prevention circuit for preventing operation of the loom when the first or second information is stored when the operation command signal is input. The controller detects that the command signal of the forward or reverse operation has been input or that the precursor drive shaft has been rotated, and generates a detection signal for erasing the storage of the first or second information. The erroneous operation prevention device according to any one of claims 1 to 4, further comprising a detection unit that performs the operation. Includes an abnormality detection sensor that detects an abnormality in the yarn supply weft supplied for weft insertion, and a control device that stops the loom with the abnormality detection signal and operates the loom with an operation command signal from the operation command switch. ,
The control device, after stopping the loom by the abnormality detection signal, means for storing first information indicating that the operation when setting the weft in the weft length storage device or the weft insertion device is not executed, An operation prevention circuit for preventing operation of the loom when the first information is stored when the operation command signal is input. A first abnormality detection sensor for detecting an abnormality of a weft insertion, a weft or a warp, a second abnormality detection sensor for detecting an abnormality of an ear braid or a catch cord, and a supplied weft supplied for the weft insertion A third abnormality detection sensor for detecting abnormality of the loom, and stopping the loom by an abnormality detection signal from the first, second or third abnormality detection sensor, and controlling the loom by an operation command signal from the operation command switch. Including a control device to operate,
The control device controls the drive shaft of the shedding device to rotate forward or reverse to a rotation angle at which the weft inserted immediately before the stop can be removed after the loom is stopped by the abnormality detection signal from the first abnormality detection sensor. Information indicating that the rotation has not been executed, second information indicating that the forward rotation or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed, the first weft inserted just before the stop. The third information indicating that the normal rotation or the reverse rotation operation up to the rotation angle at which the second weft can be removed one pick before is not executed, and the normal rotation or the reverse rotation operation up to the operation start rotation angle of the loom. At least one piece of fourth information indicating that execution has not been performed;
After the loom is stopped by the abnormality detection signal from the second abnormality detection sensor, the drive shaft of the shedding device is used to repair the breakage of the yarn with respect to the ear forming device using the ear braid yarn or the yarn end processing device using the catch cord. Fifth information indicating that the normal rotation or the reverse rotation operation up to the rotation angle at which the rotation is performed has not been executed, sixth information indicating that the jogging or the reverse rotation operation up to the operation start rotation angle of the loom has not been executed, And after stopping the loom by the abnormality detection signal from the third abnormality detection sensor, at least the seventh information indicating that the operation when setting the weft in the weft length storage device or the weft insertion device is not executed. One,
Means for storing
When the operation command signal is input, the operation of the loom is prevented when the first or second information is stored or the third or fourth information is stored, and the fifth or An operation preventing circuit for preventing the operation of the loom when the information of No. 6 is stored or the seventh information is stored. An abnormality detection sensor for detecting an abnormality of the weft or warp, and a control device for stopping the loom by the abnormality detection signal and operating the loom by an operation command signal from an operation command switch,
The control device includes an operation prevention circuit that prevents an operation of the loom when the abnormality detection signal is in an input state when an operation command signal is input.

Images