JP2654980B2 - Yarn sheet winding control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn sheet winding device such as a gluing device, and particularly to a winding control device for the yarn sheet winding device.

2. Description of the Related Art This type of winding control device is configured as a tension control system. The tension control system detects the tension of the thread sheet,
Adjust the rotation speed of the winding motor according to the tension,
The winding sheet winds the yarn sheet under a predetermined tension.

By the way, if the initial winding of the yarn sheet fails when the take-up beam is replaced, the yarn sheet is detected as being in a loose state, so the tension control system tries to absorb the slack state and operates the winding motor at high speed. Rotate. This results in an unusually high speed of the winding beam and a dangerous operating state of the winding device.

Therefore, in the invention of Japanese Utility Model Application Laid-Open No. 53-122407, when a fragile material such as paper is moved in tension, the speed control operation is automatically switched to the tension control operation when the tension value reaches a set point. It is disclosed that. According to this control method, abnormal rotation of the drive motor can be prevented, but a drive motor for the speed setting resistor is indispensable in the speed control process at the time of paper re-passing, and the speed setting portion is complicated.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to omit a motor for driving a speed setting resistor and the like, and to simplify a speed control system.

Means for Solving the Problems Based on the above object, the present invention does not use an electric motor for driving a speed setting resistor or the like as a system in which the speed control system of the yarn sheet take-up control device follows the control system of the feeding speed. In addition, by interposing a memory at the switching portion between the speed control system and the tension control system, the initial winding operation is not repeated in an operation state other than the change of the winding beam.

FIG. 1 shows a configuration of a winding control device 2 together with a yarn sheet winding device 1.

The yarn sheet 3 includes a guide roll 4 and a delivery roll 5.
As a result, it travels at a predetermined speed, contacts the tension roll 6, passes through the guide roll 7, and is wound up by the winding beam 8. The delivery roll 5 is driven by a delivery motor 9 and controlled by an operation circuit 10. The take-up beam 8 is connected to the take-up motor 11.
And controlled by the winding control device 2 of the present invention.

The winding control device 2 includes a ratio converter 12, a speed controller
13, tension detector 14, tension controller 15, winding discriminator 16,
It comprises a memory 17 and a switch 18.

The ratio converter 12 is connected at one input terminal to a pulse generator 19 connected to the winding motor 11 and at the other input terminal to a ratio calculator 27 connected to a barrel diameter setting device 28. The output side is connected to an input terminal of the speed controller 13 via an addition point 20. The barrel diameter setting device 28 is connected to an up switch 30 and a down switch 31 for changing a set value at an input end, and is connected to a barrel diameter indicator 29 at an output side. The operation circuit 10
The pulse generator 21 connected to the output terminal or the feed motor 9 is also connected to the input terminal of the speed controller 13 via the addition point 20.

Further, the tension detector 14 is mechanically connected to the tension roll 6, connected to the negative input terminal of the winding discriminator 16 on the output side, and further connected to the input of the tension controller 15 via the addition point 22. Connected to the end. The winding tension setting device 23 and the operating tension setting device 24 are electrically connected to each other, and one of the winding tension setting devices 23 is connected to the positive input terminal of the winding discriminator 16. The operating tension setting device 24 is connected to the input terminal of the tension controller 15 via the addition point 22.

The winding discriminator 16 is constituted by a comparator, and is connected to a relay 25 for operating the switch 18 via a storage device 17. The speed controller 13 and the tension controller 15 perform a PID operation, and are connected on the output side to the drive 26 of the winding motor 11 via the contacts 18b and 18a of the switch 18.

When the initial operation of the winding device 1 is started, the operator sets a new winding beam 8 and sets the winding start end of the yarn sheet 3 to a state where the winding start end of the yarn sheet 3 can be wound around the outer periphery of the winding drum. Keep it. At this time, the storage unit 17 receives a reset signal by a signal of a proximity switch or the like in response to a mechanism of the new take-up beam 8 or by an operation of the operator, and is set to the reset state. The contact 18a of the container 18 is set to the off state, and the contact 18b is set to the on state. by this,
At the time of the initial operation, the speed controller 13 can drive the take-up motor 11 via the driver 26 based on the target line speed signal of the operation circuit 10.

Thereafter, in response to a start command from the operator, the operation circuit 10 starts the feed motor 9, accelerates gradually from a low speed, drives the draw roll 5 at the target line speed, and feeds the thread sheet 3. So, the speed controller
Reference numeral 13 designates a line speed signal as a reference, and uses the output signal from the ratio converter 12 as a feedback output, sends out the winding motor 11 via the driver 26 under the PID operation, and follows the rotation of the motor 9 at a predetermined ratio. Drive. Here, the ratio converter 12 converts the take-up speed signal from the pulse generator 19 at a predetermined ratio K to obtain an output signal. Therefore, the winding beam 8 is controlled so as to satisfy the following relationship.

Line speed signal = K × winding speed signal Here, the ratio K is set so that the circumferential speed of the winding beam 8 is slightly higher than the circumferential speed of the delivery roll 5. That is, the ratio calculator 27 inputs the barrel diameter of the take-up beam 8 set by the barrel diameter setter 28, and this barrel diameter and the preset take-up beam 8
The ratio K is obtained from the ratio k of each peripheral speed between the feed roll 5 and the feed roll 5 and a constant unique to the system such as the roll diameter and the gear ratio of the feed roll 5 and input to the ratio converter 12.

For this reason, the output of the speed controller 13, that is, the speed operation signal, is higher than the peripheral speed of the delivery roll 5 than the take-up beam 8
Is set to a large value for the peripheral speed. Therefore, at this point, even if the yarn sheet 3 is not correctly wound around the outer periphery of the take-up beam 8, the take-up beam 8
Is rotated slightly faster than the line speed of the thread sheet 3 at the delivery roll 5. In setting the barrel diameter, the setting can be changed by operating the up switch 30 and the down switch 31 while referring to the display 29.

In this way, the speed controller 13 outputs a speed operation signal in a direction to eliminate the difference based on the difference between the output signal from the ratio converter 12 and the line speed signal, and
, The rotation speed of the take-up motor 11 is controlled to follow the rotation of the delivery motor 9.

Eventually, when the winding amount of the thread sheet 3 increases at the take-up beam 8, the thread sheet 3 is completely wound around the outer periphery of the take-up beam 8. In this process, since the winding speed at the winding position is set slightly higher than the line speed of the yarn sheet 3 at the feed roll 5, the tension of the yarn sheet 3 is It gradually increases in the section with the beam 8, that is, in the tension detection position. This increase in tension causes the yarn sheet 3
Can be confirmed that the is wound up correctly.

In this process, the tension of the thread sheet 3, ie, the tension detector 14
When the tension signal is equal to or larger than the signal of the set winding tension set by the winding tension setting unit 23, the winding discriminator 16 generates a switching operation signal, and the memory 17 is set by this. Activate the relay 25. For this reason, the switch 18 switches the winding motor 11 to be controlled by the tension controller 15 by turning the contact 18a on and, instead, turning the contact 18b off. Here, even if the storage device 17 outputs the initial winding operation signal, and then the tension signal is smaller than the set winding tension and the switching operation signal is turned off,
Maintain the output of the winding operation signal. Therefore, when a steady operation is started, the switch 18 keeps the contact 18a on regardless of the change of the discrimination content of the winding discriminator 16. Note that the ratio K is set so that the winding peripheral speed when the winding diameter of the winding beam 8 is the minimum is somewhat higher than the peripheral speed of the delivery roll 5. In the state where the winding diameter of No. 8 is large, it is not established. Therefore, after the new winding beam 8 has been set, the fact that the initial winding operation has been completed is stored, so that even if the winding device 1 is temporarily stopped due to thread breakage or the like during the steady operation. In addition, even if the operation state is stopped due to the power failure, even if the tension of the thread sheet 3 becomes loose and becomes lower than the set winding tension in the subsequent re-operation, the winding control device 2 restarts the initial winding operation. Will not do.

After this switching, the tension controller 15 sets the set operation tension signal set in advance by the operation tension setter 24 as a target tension, and based on the deviation between the target operation tension signal and the tension signal, cancels the deviation of the tension. A tension operation signal is generated, the rotation of the winding motor 11 is controlled via the driver 26, and the winding beam 8 is rotated. Therefore, when the initial operation state elapses, the winding device 1 is controlled by the tension control system of the winding control device 2, and winds the thread sheet 3 under the target tension.

Here, the winding tension setting device 23 and the operating tension setting device 24 are electrically linked to each other. When the operator changes the set operating tension due to a change in the thread type, the set winding tension is also linked to this. Therefore, every time the set operation tension is set or changed, it is not necessary to set or change the set winding tension in accordance with the set operation tension.

Other Embodiments of the Invention In the above embodiment, the voltage of the operating tension setter 24 is divided and, for example, about 80% of the set operating tension signal is set as the set winding tension signal. May be connected to different set voltages, and may be mechanically linked at the variable adjustment unit, or may be provided in a non-linked relationship. In the above embodiment, the ratio converter 12 is interposed in the feedback path. However, as shown in FIG. 2, the ratio may be 1 / K and may be interposed in the line speed signal circuit.

Effect of the Invention In the present invention, in the initial stage of winding a new take-up beam, even if the take-up fails, the take-up motor always follows the rotation of the feed motor as a speed control system. Danger due to high-speed rotation can be prevented beforehand without high-speed rotation.

In the speed control process, the take-up motor is speed-controlled by the ratio converter by the ratio converter so that a predetermined tension is applied to the yarn sheet, so that an electric motor for speed adjustment becomes unnecessary. Further, when the tension of the thread sheet exceeds the set winding tension in the winding discriminator, the system is switched from the speed control system to the tension control system. Therefore, the fluctuation of the tension at the time of switching is suppressed to a low level, and a smooth transition can be realized.

If the setting device for the set winding tension and the setting device for the set operation tension are electrically or mechanically linked, when the set operation tension is changed with the change of the thread type, the set winding tension is also linked to this. Therefore, when the setting of the set operation tension is changed, the operation of changing the setting of the set winding tension can be omitted. Thereby, when the set operation tension is changed, forgetting to reset the set winding tension or setting mistake can be prevented beforehand, so that there is no possibility that the fluctuation of the tension at the time of switching will increase.

In addition, if a memory is added to the output side of the winding discriminator, a new beam is set, and the fact that the initial winding has been completed is stored. When the device is temporarily stopped, or when the winding device stops due to a power failure, the control device may incorrectly operate even if the tension of the thread sheet becomes loose and lower than the set winding tension during the subsequent restart. Without restarting the initial winding operation, safe driving can always be expected.

[Brief description of the drawings]

FIG. 1 is a block diagram of a winding control device of the present invention, and FIG. 2 is a block diagram of another embodiment. DESCRIPTION OF SYMBOLS 1 ... Thread sheet take-up device, 2 ... Take-up control device, 3 ... Thread sheet, 5 ... Delivery roll, 8 ... Take-up beam, 9 ... Delivery motor, 10 ... Operation circuit, 11 …… Rewind motor, 12… Ratio converter, 13 ……
Speed controller, 14 ... Tension detector, 15 ... Tension controller, 16
… Wind discriminator, 17… memory, 18… switcher, 23… wind tension setter, 24… operation tension setter, 25… relay, 26… drive.

Claims (3)

(57) [Claims] In a winding device for rotating a winding beam by a winding motor and winding a yarn sheet around the winding beam, one of a winding speed signal and a line speed signal is inputted, and a predetermined signal is inputted. A ratio converter for converting a signal in a ratio, and a speed control for outputting a speed operation signal in a deviation canceling direction based on a difference between an output signal of the ratio converter and the other of the winding speed signal and the line speed signal. A tension detector that detects the tension of the thread sheet between the feeding roll and the take-up beam and outputs a tension signal; and a tension operation signal in a deviation eliminating direction based on the deviation between the tension signal and the set operation tension. A tension controller that outputs a signal, a winding discriminator that compares the tension signal with the set winding tension, and outputs a switching operation signal when the tension signal is equal to or greater than the set winding tension. A switch for selecting a speed operation signal when an operation signal is not output, and selecting a tension operation signal when it is output, and driving the winding motor in response to the signal selected by the switch. A winding control device comprising a driving device. 2. A winding device for rotating a winding beam by a winding motor and winding a yarn sheet around the winding beam, wherein one of a winding speed signal and a line speed signal is inputted, and A ratio converter for converting a signal in a ratio, and a speed control for outputting a speed operation signal in a deviation canceling direction based on a difference between an output signal of the ratio converter and the other of the winding speed signal and the line speed signal. A tension detector that detects the tension of the thread sheet between the feeding roll and the take-up beam and outputs a tension signal; and a tension operation signal in a deviation eliminating direction based on the deviation between the tension signal and the set operation tension. A tension controller that outputs a signal, a winding discriminator that compares the tension signal with the set winding tension, and outputs a switching operation signal when the tension signal is equal to or greater than the set winding tension; A memory that stores the output of the first switching operation signal after setting the arm, and a speed operation signal that is selected when the switching operation signal is not output, and tension is output when the switching operation signal is output. A winding control device, comprising: a switch for selecting an operation signal; and a driver for receiving the signal selected by the switch and driving the winding motor. 3. The winding of a thread sheet according to claim 1, wherein the setting device of the set winding tension and the setting device of the set operation tension are electrically linked. Take control unit.