JPH0949128A - Method and control device for simultaneous pipe changer of spinning machine - Google Patents

Abstract

(57) Abstract: When a full bobbin withdrawal error occurs during the operation of the pipe changing device, the time required to complete the pipe changing operation is set to the same level as when there is no drawing error. SOLUTION: A doffing bar provided with a bobbin gripping device is displaced up and down between a spindle row and a transfer device arranged below it to perform pipe replacement work. If the full bobbin on the spindle is left unremoved, the trouble notification means is activated based on the detection signal of the left unremoved bobbin detection means to notify the operator of the occurrence of the trouble, and the pipe replacement device is set to the full remnant remaining on the spindle. The bobbin sequentially continues operations that do not hinder the tube changing operation. If the problem is resolved by the time the doffing bar starts inserting the empty bobbin into the spindle, the pipe replacement operation is continued.If the problem is not resolved, the operation before inserting the empty bobbin into the spindle is started. The pipe replacement operation is interrupted in the state. After the trouble is resolved, the replacement operation is continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method and a control device for a pipe changing device for a spinning machine such as a ring spinning machine and a ring twisting machine.

[0002]

2. Description of the Related Art In recent years, automation in spinning factories has progressed,
In a spinning machine such as a ring spinning machine and a ring twisting machine, a doffing device for automatically doffing and inserting a new empty bobbin into a spindle is carried out by a doffing device. As a pipe changing device, there is a whole-pile simultaneous pipe changing device provided for each spinning machine stand. In the all-mass simultaneous pipe changer, a conveyor device in which pegs are projected below the spindle row of the spinning machine stand at the same pitch as the spindle pitch is provided, and the spindle pitch is the same between the conveyor apparatus and the spindle row. A pedestal with a middle peg protruding from the pitch is provided. A doffing bar equipped with bobbin gripping devices arranged at the same pitch as the spindle pitch is displaced up and down between the spindle row and the conveyor device by the pantograph mechanism, and the entire pantograph mechanism approaches the spinning machine stand. Is configured to be rotatable to a position separated from. (For example, JP-A-48-309
70, JP-A-2-289130, JP-A-5
-195344).

As shown in FIG. 5, the doffing bar 61
The pantograph mechanism 62 for displacing up and down is provided by a reciprocating movement of a drive shaft 63 extending along the machine base longitudinal direction, and includes a ball screw mechanism driven by a motor as a driving means of the drive shaft 63 in a forward and reverse direction. A so-called power cylinder (not shown) is used. Further, the entire pantograph mechanism 62 is driven by the rotating means to drive the drive shaft 6.
It is designed to be rotated about the rotation center 3.

During pipe replacement work, the bobbin gripping device 61a mounted on the duffing bar 61 moves along the line indicated by the arrow in FIG. 5 (a), and the peg 64a of the conveyor device 64 is moved.
After inserting the empty bobbin E pulled out from above into the intermediate peg 65, the empty bobbin E reaches the position corresponding to the upper side of the full bobbin F on the spindle 66. Next, the bobbin gripping device 61a is shown in FIG.
Move along the line indicated by the arrow in FIG.
After pulling out the upper full bobbin F, it is inserted on the peg 64a of the conveyor device 64. Next, the empty bobbin E on the intermediate peg 65 is moved again along the line indicated by the arrow in FIG.
After being inserted into the spindle 66, it moves along the line indicated by the arrow in FIG. 5B to return to the standby position above the peg 64a.

Further, this type of pipe changing device is provided with a sensor for detecting a mistake in pulling out the full bobbin from the spindle 66 (for example, Japanese Patent Publication No. 48-3339). In addition, in Japanese Patent Laid-Open No. 2-160939, not only is there a mistake in pulling out the full bobbin from the spindle 66,
There is disclosed a device that manages the work of the pipe changing device by providing a sensor that detects a mistake in pulling up the empty bobbin E from the peg 64a of the conveyor device 64 and a mistake in releasing the bobbin from the bobbin holding device 61a. As this type of sensor, a transmissive sensor consisting of a light emitter and a light receiver is used,
It is arranged so that the light beam from the light projector passes above the tip of the spindle and passes through the position corresponding to the top of the full bobbin F inserted in the spindle along the longitudinal direction of the machine base to reach the light receiver.

[0006]

In the conventional apparatus equipped with the sensor for detecting the full bobbin withdrawal error, when the sensor outputs a detection signal of the full bobbin withdrawal error, the operation of the pipe changing device is stopped. It has become so. For example, as shown in FIG.
When the sensor 67 outputs a detection signal for the remaining full bobbin F while the full bobbin F is pulled up from the spindle 66 and moved to a position where the full bobbin F is moved downward, the operation of the pipe changing device is stopped. Then, after the worker pulls out the full bobbin F from the spindle 66 and operates the restart switch of the pipe changing device, the operation is restarted.

After the operation is restarted, the doffing bar 61 moves to a position where the full bobbin F is inserted into the peg 64a, and after the insertion, the doffing bar 61 moves upward to grip the empty bobbin E on the intermediate peg 65 and hold the empty bobbin E. It is inserted into the spindle 66 and then moved to the standby position. That is, conventionally, when the pipe replacement device is temporarily stopped due to a pull-out error of the full bobbin F, it takes time for all the operations of the pipe replacement device to be completed after the operator treats the remaining full bobbin F. There has been a problem that the spinning machine standstill time becomes long and the productivity decreases.

The present invention has been made in view of the above problems, and an object thereof is to replace a tube after the operator has treated the miss bobbin when a full bobbin is pulled out while the tube replacement device is operating. (EN) Provided are a method and a device for controlling a simultaneous pipe changer of a spinning machine, which can shorten the operation time of the device and make the time required for completing the pipe change operation the same as when there was no mistake in drawing. is there.

[0009]

In order to achieve the above object, in the invention according to claim 1, a doffing bar provided with a bobbin holding device is provided between a spindle row and a transfer device arranged below the spindle row. In a simultaneous pipe changer that performs lifting and displacing work to change pipes, if unremoved parts are left when the full bobbin on the spindle is pulled out, the trouble notification means is activated based on the detection signal from the unremoved bobbin detection means. The operator is informed of the occurrence of the trouble, and the pipe changing device continues the operations in which the full bobbin remaining on the spindle does not hinder the pipe changing operation.The doffing bar grips the empty bobbin and the empty bobbin is set on the spindle. If the trouble is resolved before the inserting operation is started, continue the operation, and if the trouble is not resolved, insert an empty bobbin into the spindle. Interrupt the pipe replacement operation in a state before starting the work, and so as to continue the Kankawa operation after the trouble is resolved.

According to a second aspect of the present invention, a simultaneous pipe change operation is performed in which a doffing bar having a bobbin holding device is displaced up and down between a spindle row and a transfer device arranged below the spindle row. In the device, an unremoved bobbin detecting means for detecting an unremoved bobbin on the spindle, and a trouble occurrence informing means for informing the occurrence of the unremoved bobbin based on the unremoved bobbin detection signal of the unremoved bobbin detecting means, and Even if the leftover detection signal is output, the operation of the doffing bar is continued, and the leftover detection signal must be output before the doffing bar holding the empty bobbin inserts the empty bobbin into the spindle. For example, the tube replacement operation is continued, and if the unplugged detection signal is output, the tube replacement operation is temporarily stopped and the unplugged bobbin detection means is removed. Leaving detection signal provided with control means for resuming the pipe replacement operation of Doffinguba after no longer output.

According to the inventions of claims 1 and 2,
During pipe replacement work, when the doffing bar pulls out the full bobbin on the spindle, if there is leftover
The unremoved bobbin detecting means detects it. The trouble notification means is operated based on the leftover detection signal from the leftover removal bobbin detection means to notify the operator of the occurrence of the trouble. Even if there is an unplugged portion, the pipe replacement device sequentially continues the operation in which the full bobbin remaining on the spindle does not hinder the pipe replacement operation. When the trouble is resolved by the time when the doffing bar holds the empty bobbin and starts the operation of inserting the empty bobbin into the spindle, the pipe changing device continues the operation. If the trouble is not resolved by the time the empty bobbin is inserted into the spindle, the pipe changing device interrupts the pipe changing operation in the state before starting the operation to insert the empty bobbin into the spindle. Wait until the trouble is resolved, and restart the replacement operation after the trouble is resolved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 2, a large number of spindles 3 are arranged at a constant pitch on a spindle rail 2 of a ring spinning machine stand (hereinafter referred to as a spinning machine stand) 1. Below the spindle rail 2, a bobbin is known to be transferred using a peg tray 4 (for example,
The transfer device 5 of JP-A-63-145438) is provided. A support bar 6 is provided on the front side of the spindle rail 2.
Are extended along the spindle rail 2, and an intermediate peg 7 is projected on the upper surface of the support bar 6 at the same pitch as the spindle pitch. Further, the spinning machine base 1 is equipped with a pipe changing device 8 of a known configuration and having a whole spindle and simultaneous type.

A doffing bar 10 provided with a bobbin holding device 9 (shown in FIG. 3) is a so-called pantograph mechanism 11.
The pantograph mechanism 11 is configured to be rotatable about the drive shaft 12 in the direction orthogonal to the longitudinal direction of the spinning machine frame 1 by the vertical movement of the pantograph mechanism 11. The first link 13 that constitutes the pantograph mechanism 11
The first end portion is connected to the movable bracket 14 that is fixed to the drive shaft 12 so as to be integrally movable, and the doffing bar 10 is connected to the second end portion. The second link 15 that constitutes the pantograph mechanism 11 includes the drive shaft 12
The position of the fixed bracket 16 is slidably supported, and the pin is connected to a support bracket 17 rotatably supported by the drive shaft 12. The drive shaft 12 is reciprocated by the operation of a power cylinder 18 arranged at one end of the spinning machine base 1, and when the drive shaft 12 is moved forward (moved to the left side in FIG. 2), the doffing bar 10 is moved.
Is raised, and the doffing bar 10 is lowered during the backward movement. The power cylinder 18 has a ball screw mechanism, and the rotational force of the motor M (shown in FIG. 4) is converted into a force for reciprocating the drive shaft 12 via the ball screw mechanism.

As shown in FIG. 3, a lever 19 is integrally provided on the support bracket 17 so as to extend toward the inside of the spinning machine stand 1. The lever 19 has its tip connected to a known drive mechanism via a link (not shown), and an air cylinder (not shown) driven by the drive mechanism operates to drive the support shaft 17 together with the drive shaft 12.
Is rotated around the center. When the piston rod is in the retracted state, the lever 19 is in a substantially horizontal state, and the pantograph mechanism 11 is held in a vertical state. When the piston rod is in the maximum protruding state, the lever 19 has its tip directed upward. The entire pantograph mechanism 11 is tilted and turned to the outermost position.
Further, when the piston rod is held at the intermediate position, the bobbin holding device 9 is located on the extension of the central axis of the intermediate peg 7.

As shown in FIG. 2, the spinning machine base 1 is provided with a sensor as an unremoved bobbin detecting means for detecting an unremoved bobbin when the full bobbin F is withdrawn from the spindle 3. The sensor is a light projector 20a and a light receiver 20.
b, the light beam from the projector 20a passes above the tip of the spindle 3 and passes through a position corresponding to the top of the full bobbin F inserted in the spindle 3 along the longitudinal direction of the machine base to reach the light receiver 20b. It is arranged to do. The spinning machine base 1 is provided with a trouble indicator lamp 21 as trouble occurrence notifying means for notifying the occurrence of the unremoved bobbin based on the output signal of the light receiver 20b.

As shown in FIG. 4, a control device C as a control means for controlling the operation of the pipe changing device 8 includes a central processing unit (hereinafter referred to as CPU) 22 and a read-only memory (ROM) storing a control program. Program memory 23 and a readable and rewritable memory (RAM)
And a working memory 24. The work memory 24 stores the input data input by the input device 25,
The calculation results and the like in the CPU 22 are temporarily stored. CPU
22 operates based on the program data stored in the program memory 23. The rotary encoder 26 for detecting the rotation amount of the ball screw of the power cylinder 18 is connected to the CPU 22 via the input / output interface 27,
The CPU 22 determines the position of the drive shaft 12, that is, the doffing bar 1 based on the output signal of the rotary encoder 26.
The position of 0 is calculated. The CPU 22 is connected to the motor M via the input / output interface 27, the drive circuit 28a, and the inverter 29, and is connected to the control valve 30 that controls the supply of compressed air to the air cylinder that drives the drive mechanism that rotates the pantograph mechanism 11. It is connected via the output interface 27 and the drive circuit 28b.

The CPU 22 is connected to the sensors S1 to S3 for detecting the rotational position of the pantograph mechanism 11 via the input / output interface 27, and confirms the position of the pantograph mechanism 11 based on the output signals from the sensors S1 to S3. . The sensors S1 to S3 each output an ON signal when the piston rod of the air cylinder that drives the drive mechanism that rotates the pantograph mechanism 11 moves to the maximum protruding position, the intermediate protruding position, and the retracted position. .

The CPU 22 controls the motor M and the control valve 30 based on the output signals of the rotary encoder 26 and the sensors S1 to S3 to control the operation of the power cylinder 18 and the air cylinder, and sequentially moves the doffing bar 10 to a predetermined position. Let them do the pipe replacement work. When the CPU 22 interrupts the pipe replacement work, when the output signal of the operation switch 31 is input, the CPU 22 causes the pipe replacement device 8 to sequentially perform the operations after the suspension so as to complete the pipe replacement work. When the doffing bar 10 holding the empty bobbin E performs an empty bobbin insertion operation on the spindle 3, the CPU 22 temporarily stops the tube changing operation when the unremoved detection signal is output from the light receiver 20b. The tube changing operation of the doffing bar 10 is restarted after the unplugged detection signal is no longer output.

Next, the operation of the apparatus constructed as described above will be described with reference to the flow chart of FIG. The peg tray 4 in which the empty bobbin E is inserted is carried into the position corresponding to the spindle 3 on the transfer device 5 while the spinning machine stand 1 is in operation.
Then, after the spinning machine stand 1 is stopped due to the full pipe, the pipe changing device 8 is operated.

During the pipe replacement work, first, in step S1, the doffing bar 10 (bobbin holding device 9) is moved down from the standby position to the holding position of the empty bobbin E on the peg tray 4, and the empty bobbin E is gripped. After gripping the empty bobbin E, the arrow a → shown in FIG.
The empty bobbin E is inserted into the intermediate peg 7 by moving in the order of b → c → d → e. Next, arrows f → g → h shown in FIG.
And the full bobbin F is gripped (step S
3) After that, in step S4, the doffing bar 10 is moved in the order of arrow i → j shown in FIG. 3B, and after the full bobbin F is pulled out from the spindle 3, it is moved to the open position where it is separated from the spinning machine stand 1. To reach.

Next, the CPU 22 determines the light receiver 2 in step S5.
The presence or absence of the unremoved bobbin is determined based on the output signal of 0b. If there is no unremoved bobbin, the process proceeds to step S6.
If there is an unremoved bobbin, the process proceeds to step S7, the trouble indicator lamp 21 is turned on, and then the process proceeds to step S6. Then, in step S6, the bobbin holding device 9 is moved in the order of arrows k → l → m shown in FIG. 3B, and the full bobbin F is inserted into the peg 4a. Next, the arrow a → shown in FIG.
The bobbin holding device 9 is moved in the order of b → c → d → e → f, and the empty bobbin E is pulled out from the intermediate peg 7 (step S8).

In this state, the CPU 22 judges the presence or absence of the unremoved bobbin based on the output signal of the light receiver 20b (step S9). If there is no unremoved bobbin, the bobbin holding device 9 is moved to the arrow shown in FIG. 3 (a). The empty bobbin E is inserted into the spindle 3 by moving in the order of g → h (step S1).
0). Then, after that, the bobbin holding device 9 is moved to the position shown in FIG.
Are moved in the order of arrows i → j → k → l, and the bobbin holding device 9 returns to the standby position (the position shown in FIG. 3A) above the peg 4a (step S11). The pipe replacement operation is completed. From the time when the trouble indicator lamp 21 is turned on in step S7 to the time when it is determined in step S9 whether or not there is an unremoved bobbin, the operator notices that the trouble indicator lamp 21 is on and takes out the unremoved bobbin from the spindle 3. Have room for. Therefore, step S7
Even if the trouble indicator lamp 21 is turned on, the trouble measure is usually taken before the step S9 is executed, and the trouble indicator lamp 21 is turned off. As a result, even if the trouble indicator lamp 21 is turned on in step S7, a series of pipe replacement work is performed without interrupting the work, as in the case where there is no unplugged portion.

If the CPU 22 determines in step S9 that there is a bobbin left unremoved due to the operator's work delay or the like, the operation proceeds to step S12, and the operation of the pipe changing device 8 is temporarily stopped.
Wait for the operator to troubleshoot. When the trouble is resolved in step S13, that is, when the full bobbin F is pulled out from the spindle 3, the CPU is detected based on the output signal of the light receiver 20b.
22 turns off the trouble indicator lamp 21 in step S14. When the operator operates the operation switch 31 to turn it on in step S15, the CPU 22 proceeds to step S10 and causes the pipe replacement device 8 to perform the pipe replacement operation after the interruption, that is, step S10 and step S11.

Conventionally, if there is a bobbin left unremoved in step S5, the light receiver 20b detects it, and the tube change operation of the tube changer 8 is stopped based on the detection signal, and the trouble indicator lamp 21 is turned on. It Then, when the operator operates the operation switch 31 after troubleshooting, the pipe changing device 8 restarts the pipe changing operation. Therefore, the waiting time until the operator finishes the trouble treatment is added to the pipe replacement work as it is, and the pipe replacement time is prolonged.

However, in this embodiment, step S5
Even if the full bobbin F is left unremoved, the tube changing operation is not interrupted, and at least a step before the bobbin holding device 9 inserts the empty bobbin E pulled out from the intermediate peg 7 into the spindle 3,
That is, the pipe replacement operation is continued until step S8. Therefore,
If the worker finishes the trouble treatment until Step S8 is completed, Steps S10 and S11 are performed in the same manner as when there is no unremoved portion, and even if there is an unremoved portion of the full bobbin F, the pipe replacement work time Does not last long.

If the operator has not completed the trouble treatment until step S8 is completed, the pipe replacement operation is interrupted in the state where step S8 is completed, the trouble treatment by the worker is completed, and the operation switch 31 is turned on. After being turned on, steps S10 and S11 are performed. Even in this case, since a part of the pipe changing operation, that is, steps S6 and S8 are completed after the trouble occurs and before the operator finishes the trouble correcting operation, the pipe changing operation performed after the trouble correcting is reduced. , The time extension until the replacement is completed becomes shorter.

In addition to the above effects, this embodiment has the following effects. (B) Since the trouble indicator lamp 21 is turned on as a trouble notifying means, the operator can easily confirm the occurrence of trouble.

The present invention is not limited to the above embodiment, but may be embodied as follows, for example. (1) Like the device disclosed in JP-A-51-40438, an empty bobbin is inserted into every other peg on a conveying device having pegs at a pitch of half the spindle pitch. Alternatively, it may be applied to a device for exchanging empty bobbins and full bobbins between the transfer device and the spindle without using the intermediate peg. In this case, the pantograph mechanism 11
Is rotated between two positions, a vertical position and a rotating position rotated outward.

(2) A sensor is provided for detecting the unremoved portion of the empty bobbin E from the peg 4a.
The second trouble indicator lamp is turned on when it is detected that the unplugged portion is left. If the operator cannot remove the empty bobbin E by the time the bobbin holding device 9 holding the full bobbin F inserts the full bobbin F into the peg 4a, before the full bobbin F insertion operation. The pipe replacement operation may be interrupted at a stage, and the pipe replacement operation may be restarted after troubleshooting.

(3) As the trouble notifying means, instead of the means for notifying the trouble by light emission such as an indicator lamp, a means for notifying the trouble by a sound such as a buzzer may be provided.
However, the operator is more likely to recognize the occurrence of the trouble by the light notification than the sound notification.

Inventions other than those described in the claims that can be grasped from the above-described embodiments and modifications will be described below along with their effects. (1) In the inventions according to claim 1 and claim 2,
An indicator light is used as a trouble notification means. in this case,
It is easy for the operator to recognize the occurrence of trouble.

[0032]

As described above in detail, according to the first and second aspects of the present invention, even if there is a mistake in pulling out the full bobbin during the operation of the pipe changing device, the operator can treat the miss bobbin. It is possible to shorten the operation time of the subsequent pipe replacement device, and it is possible to reduce the time required until the pipe replacement operation is completed to the same extent as when there is no drawing error.

[Brief description of drawings]

FIG. 1 is a flowchart showing the operation of the embodiment.

FIG. 2 is a schematic front view showing a spinning machine base and a pipe changing device.

FIG. 3 is a schematic side view showing the operation.

FIG. 4 is a block diagram of a control device.

FIG. 5 is a schematic side view showing the operation of the conventional device.

[Explanation of symbols]

3 ... Spindle, 5 ... Transfer device, 8 ... Tube changing device, 9 ... Bobbin gripping device, 10 ... Duffing bar, 20a ... Projector that constitutes unremoved bobbin detection means, 20b ... Similarly light receiver, 21 ... Trouble occurrence notification Trouble indicator light as means, 22 ... CPU constituting control means, C ... Control device as control means, E ... Empty bobbin, F ... Full bobbin.

Claims (2)

[Claims] 1. A simultaneous pipe changing device for performing pipe changing work by vertically moving a doffing bar equipped with a bobbin holding device between a spindle train and a transfer device arranged below the spindle train. If the unremoved bobbin is left during bobbin withdrawal operation, the trouble notification means is activated based on the detection signal of the unremoved bobbin detection means to notify the operator of the occurrence of the trouble, and the full bobbin remaining on the spindle in the transfer device. Will continue the operations that do not hinder the pipe changing operation, and if the trouble is resolved before the doffing bar grips the empty bobbin and starts the operation of inserting the empty bobbin into the spindle, continue the operation. If the problem is not solved, the trouble is solved by interrupting the tube changing operation in the state before starting the operation of inserting the empty bobbin into the spindle. The method of simultaneous type pipe replacement device spinning machine to continue Kankawa operation. 2. A simultaneous pipe changing device for changing pipes by vertically moving a doffing bar equipped with a bobbin holding device between a spindle row and a transfer device arranged below the spindle row. Unremoved bobbin detection means for detecting unremoved bobbin, trouble occurrence notification means for informing the occurrence of unremoved bobbin based on the unremoved bobbin detection signal of the unremoved bobbin detection means, and the unremoved detection signal Even if the doffing bar continues to operate and the doffing bar holding the empty bobbin inserts the empty bobbin into the spindle, the pipe replacement operation is continued unless the unremoved detection signal is output. If the leftover removal detection signal is output, the tube replacement operation is temporarily stopped, and the leftover removal bobbin detection means outputs the leftover removal detection signal. A control device for a simultaneous pipe changing device of a spinning machine, which is provided with a control means for restarting the pipe changing operation of the doffing bar after it disappears.