JPH08223961A - Controller for winder - Google Patents

Abstract

PURPOSE: To enhance accuracy of tension control during the winding operation by correcting the output reference value from a tension reference operating circuit based on the drum winding tension value immediately before idling the front or rear drum. CONSTITUTION: A drum idling detection circuit 17 is connected with a rotation speed detector 21 or 22 for the rear or front drum and detects idling of the rear or front drum. A winding tension memory circuit 18 is connected with the drum idling detection circuit 17 and a winding hardness control circuit 16 and stores the drum winding tension immediately before provision of an output signal from the drum idling detection circuit 17. A winding tension correcting circuit 19 is connected with the winding tension memory circuit 18 and corrects the output reference value from a tension reference operating circuit 10 based on a drum winding tension value stored in the memory circuit 18. A speed control circuit 15 is connected with the rear drum rotation speed detector 21 and a winding speed setter 8 and delivers a speed control signal to an adder 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding machine control device for continuously winding a roll material such as paper, film and iron.

[0002]

2. Description of the Related Art Conventionally, when a wound roll of a product contains a defect point, an operator manually cuts (cuts or tears) the paper of that part.
At this time, the roll diameter of the cut portion becomes smaller than that of the other portions, and the roll surface becomes uneven. Therefore, when the front drum side of the two winding rolls (front drum roll and rear drum roll) loses contact with the roll surface and slips (idling) occur, the front drum contributes to the winding operation. There is a problem that the drum roll load sharing control, which is important in controlling the winding tension during the winding operation, is unbalanced and the winding is not performed smoothly.

[0003]

As described above, when a part of the product roll is cut by the operator, when the cut portion reaches the front drum side, it is placed between the front drum and the product roll. A gap is created and the front drum runs idle. Therefore, the front drum, with no load,
Cause an overspeed above the desired speed.

At this time, since the front drum does not contribute to the normal winding operation, the balance of the load (tension) sharing control by the drive system of the two front drums and the rear drum is normally lost, and the tension control changes suddenly. cause.

Further, when the rear drum alone is operated and the tension on the take-up roll side is insufficient, the web may be pulled backward by the rewind roll and run in the reverse direction.

The present invention is to solve the above-mentioned problems of the prior art, and detects the moment when the front drum idles, and the load (tension) that the front drum bears from the moment when the idle idles to the time before idle. Is added to the rear drum as a correction amount and switched to single lung operation of only the rear drum, thereby providing a winder control device capable of improving the tension control characteristics during the winding operation. .

[0007]

SUMMARY OF THE INVENTION A winder control device according to the present invention comprises a rewinding roll variable speed drive device for variable speed driving a motor generator connected to a central shaft of a rewinding roll, and a winding roll control device. A plurality of take-up roll variable speed drive devices that variably control the rotational speeds of a plurality of take-up roll drive motors that drive the surface, and a rewinding tension of the rewind roll variable speed drive device and A tension setter that presets the take-up tension, a take-up speed setter that presets the take-up speed of the take-up roll, a loss compensation circuit that outputs load loss depending on the take-up speed, and the inertia of the entire rewind roll. An inertial acceleration / deceleration compensation circuit that outputs the inertial moment compensation value during acceleration / deceleration operation by the moment, and the tension reference signal to the take-up roll variable speed drive device by correcting the set value of the tension setter with the load loss and the inertia moment compensation value. To A tension reference calculation circuit that applies force, a winding hardness control circuit that controls the winding tension shared by the winding roll variable speed drive device, and a drum that detects that either the rear drum or the front drum idles. An idle rotation detection circuit, a winding tension storage circuit that stores the drum winding tension value immediately before the drum idle rotation detection signal is output by the drum idle rotation detection circuit, and a drum winding tension stored in this winding tension storage circuit. And a winding tension correction circuit that corrects the output reference value of the tension reference calculation circuit according to the value.

[0008]

In the winding machine control device of the present invention, a plurality of motor generators connected to the central shaft of the rewinding roll are driven at a variable speed by the rewinding roll variable speed drive device to drive the surface of the winding roll. The rotational speed of the take-up roll drive motor is variably controlled by a plurality of take-up roll variable speed drive devices, and the rewinding tension of the take-up roll variable speed drive device and the take-up tension of the take-up roll variable speed drive motor are preset. Set the winding speed of the take-up roll in advance, output the load loss by the take-up speed, output the inertia moment compensation value during acceleration / deceleration operation by the inertia moment of the entire rewind roll, and set the tension setter's The tension reference signal is output to the winding roll variable speed drive device after being corrected by the set value and the inertia moment compensation value, and the winding tension controlled by the winding roll variable speed drive device is controlled by the winding hardness control circuit. Detecting the idling of either the rear drum or the front drum, the drum take-up tension detection circuit stores the drum take-up tension value immediately before the drum idling detection signal is output, and stores it in the take-up tension storage circuit. It is characterized in that the output reference value of the tension reference calculation circuit is corrected by the stored drum winding tension value.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the winding machine control device of the present invention will be described below. 1 and 2, the rewinding roll variable speed drive device 1 is a control circuit that drives the motor generator 47 connected to the central shaft of the rewinding roll 53 at a variable speed, and the rotation speed of the motor generator 47 is the winding speed. It is detected by the return roll rotation speed detector 50. The take-up roll variable speed driving devices 2 and 3 are control circuits that variably control the rotational speeds of the rear drum 55 and the front drum 56 that drive the surface of the take-up roll 54, respectively. It is detected by the speed detector 21 and the front drum rotation speed detector 22. The tension setter 7 controls the rewinding tension of the rewinding roll variable speed drive unit 1 and the winding tension of the takeup roll variable speed drive units 2 and 3 in tension control circuits 4, 5, and 6.
It is a setting device that is set in advance via. Winding speed setting device 8
Is a setting device for presetting the winding speed of the winding roll 54. The loss compensation circuit 9 outputs a load loss (mechanical loss) depending on the winding speed, and the inertial acceleration / deceleration compensation circuit 11 outputs an inertial moment compensation value during acceleration / deceleration operation based on the inertial moment of the entire rewinding roll. The tension reference calculation circuit 10 is connected to the loss compensation circuit 9 and the inertial acceleration / deceleration compensation circuit 11 via the adder 12 with the set value of the tension setter 7 as a reference, and the load loss from the loss compensation circuit 9 and the inertial acceleration / deceleration. Compensation circuit 11
Corrected by the moment of inertia compensation value from the adder 1
A tension reference signal is output to the take-up roll variable speed driving devices 2 and 3 via the adder 3 and the adder 14. Roll hardness control circuit 1
Reference numeral 6 denotes a circuit for controlling the take-up tension shared by the take-up roll variable speed drive devices 2, 3 through tension control circuits 5, 6.
The drum idling detection circuit 17 includes the rear drum rotation speed detector 2
1 and the front drum rotation speed detector 22 and detects that one of the rear drum 55 and the front drum 56 idles. The winding tension storage circuit 18 is connected to the drum idle detection circuit 17 and the winding hardness control circuit 16, and stores the drum winding tension value immediately before the drum idle detection circuit 17 outputs the drum idle detection signal. The winding tension correction circuit 19 is the winding tension storage circuit 1
8 and corrects the output reference value of the tension reference calculation circuit 10 by the drum winding tension value stored in the winding tension storage circuit 18. The speed control circuit 15 includes a rear drum rotation speed detector 21 and a winding speed setting device 8 via an adder 20.
And outputs a speed control signal to the adder 14. Further, 57 shown in FIG. 1 is a tension detector for detecting the tension of the web (roll material) 58, and 60 is a winding machine control circuit constituted by these circuits. C-Ref, SR
ef is a drive control signal, that is, in this embodiment, the motor generator 47 connected to the central axis of the rewinding roll 53 and the rotation speed detector 50 for detecting the rotation speed of the motor generator 47.
A rewinding roll variable speed drive device 1 that drives the motor generator 47 at a variable speed, electric motors 48 and 49 that drive the surface of the take-up roll 54, and a rotation speed detector that detects the rotation speeds of the electric motors 48 and 49. 51 and 52, winding roll variable speed driving devices 2 and 3 for driving the winding roll 54 at a variable speed, and the web 5.
8, a tension detector 57 for detecting the tension of the web 8, a tension setting device 7 for setting the winding tension of the web 58, a winding speed setting device 8 for setting the winding speed, a tension setting device 7 and a winding speed setting. A current reference signal is supplied to the rewinding roll variable speed driving device 1 and a speed reference is supplied to the winding roll variable speed driving devices 2 and 3 in accordance with each set value of the winding device 8 and the detection signals of the rotation speed detectors 50, 51 and 52. In the controller 60 of the winder that outputs a signal,
A loss compensation circuit 9 that outputs a load loss (mechanical loss) depending on the winding speed, an inertial acceleration / deceleration compensation circuit 11 that outputs inertial moment compensation during acceleration / deceleration operation based on the inertial moment of the entire rewinding roll, and a tension setter 7. A tension reference calculation circuit 10 that outputs a tension reference signal to the winding roll variable speed drive devices 5 and 6 according to the set value, and a winding hardness control circuit 16 that controls the winding tension shared by the two winding drums. A drum idling detection circuit 17 for detecting idling of one of the two take-up drums, and a take-up tension of the take-up drum immediately before a drum idling detection circuit 17 outputs a drum idling detection signal are stored. Winding tension memory circuit 18 and winding tension memory circuit 18
2 shows a winding machine control device including a winding tension correction circuit 19 for outputting the winding tension stored in FIG. 1 as a tension correction value for the other winding drum.

The winding machine control circuit 60 shown in FIG.
In contrast, the set values of the winding tension setting device 7 and the winding speed setting device 8, the tension detector 57, and the rewinding roll rotation speed detector 5 are set.
0, rear drum rotation speed detector 21, front drum rotation speed detector 22, rewind roll variable speed drive device 1, take-up roll variable speed drive devices 2 and 3 are input, and rewind roll variable speed drive is input. The current reference is output to the device 1, and the speed reference is output to the winding roll variable speed drive devices 2 and 3.

Further, in FIG. 2, when a part of the product roll is cut, the timing of idling of one winding drum is detected, and the winding tension is corrected for the other winding drum. It is shown.

FIG. 3 is an enlarged view showing the positional relationship between the take-up roll and the two take-up drums and the cut position of the take-up roll.

In FIG. 3, when the cut point reaches the point A, the roll diameter of the take-up roll 54 is smaller than that of the other parts, so that the front drum 56 and the take-up roll 54 are separated from each other. There is a gap between the front drum 5
6 loses contact with the winding roll 54 and slips (slip)
To do. Therefore, the front drum 56 is rear drum 55.
It does not contribute to the load sharing control with the and the tension on the winder is lost.

In FIG. 2, a drum idle detection circuit 17 detects idle rotation of the front drum 56. At the same time, the winding tension storage circuit 18 outputs the stored winding tension value of the front drum 56 immediately before idling to the winding tension correction circuit 19. The winding tension correction value is output from the winding tension correction circuit 19, and is added to the output values from the loss compensation circuit 9, the tension reference calculation circuit 10, and the inertia acceleration / deceleration compensation circuit 11 in the adder 13. . The tension value output from the adder 13 is added to the speed reference value output from the speed control circuit 15 by the adder 14 and output to the tension control circuit 5 of the rear drum 55. Winding roll variable speed drive device 5 for the rear drum 55
Is the rear drum 55 according to the output value from the tension control circuit 5.
Speed control and tension control.

Next, in FIG. 3, when the cut point reaches the point B after passing the point A, the take-up roll 54, the rear drum 55, and the take-up roll at both contact points of the points A and B. A gap is created between 54 and the front drum 56.
Since the take-up roll 54 can freely move in the vertical direction P, it automatically drops downward and again comes into contact with the front drum 56 and the rear drum 55 at the points A and B to the original state. Return to.

Incidentally, M indicates a cutting start position.

In FIG. 2, when the drum idling detection circuit 17 stops detecting the idling of the front drum 56, the tension correction on the rear drum 55 by the winding tension correction circuit 19 is stopped, and the front drum 56 and the rear drum 5 are stopped.
Return to the steady-state load sharing control by both of the two winding drums of No. 5.

In the present embodiment, the front drum 56
The timing at which idling is no longer detected is grasped as the point for returning to normal operation. In FIG. 3, the timing for returning control to normal operation is such that the cut position reaches point B and the winding roll 54 Since it is the position where it falls, it is possible to calculate the time required for rotation between points A and B after the idling of the front drum 56 at point A is started. That is, in FIG. 3, r is the winding roll diameter [m], v is the winding speed [mpm], θ is the angle [rad] of the arc AB, and ω is the angular velocity of the winding [rad / sec] (= v /
r), the arrival time at point A is calculated as t = θ / ω = 60rθ / v [sec].

According to this embodiment, smoothing of the winding operation,
It is possible to accelerate production and improve the yield of product roll production.

[0020]

According to the present invention, in spite of the simple construction, the winding operation by both the front drum and the rear drum is automatically switched to the single lung operation by the rear drum alone without depending on the operation by the human system. In addition, the operation from one lung operation can be resumed to the operation using both the front drum and the rear drum normally, and the tension control can be stably performed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a winder controller according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing details of FIG.

FIG. 3 is another explanatory view showing the operation of FIG.

[Explanation of symbols]

 2, 3 Take-up roll variable speed drive device 7 Tension setting device 10 Tension reference calculation circuit 16 Winding hardness control circuit 17 Drum idle detection circuit 18 Winding tension storage circuit 19 Winding tension correction circuit

Claims (1)

[Claims] 1. A rewinding roll variable speed drive device for variable speed driving a motor generator connected to a central shaft of a rewinding roll, and rotational speeds of a plurality of winding roll drive motors for driving the surface of the winding roll. A plurality of take-up roll variable speed drive devices for respectively variably controlling, a tension setting device that presets the rewinding tension of the rewind roll variable speed drive device and the take-up tension of the take-up roll variable speed drive device, A winding speed setting device that presets the winding speed of the winding roll, a loss compensation circuit that outputs a load loss based on the winding speed, and an inertia moment compensation during acceleration / deceleration operation based on the inertia moment of the entire rewinding roll. An inertial acceleration / deceleration compensating circuit for outputting a value, and a tensioning signal for outputting a tension reference signal to the winding roll variable speed drive device by correcting the set value of the tension setter with the load loss and the inertia moment compensation value. A force reference calculation circuit, a winding hardness control circuit for controlling the winding tension shared by the winding roll variable speed drive device, and a drum idle rotation detecting either the rear drum or the front drum idle rotation. A detection circuit, a winding tension storage circuit for storing a drum winding tension value immediately before the drum idle detection signal is output by the drum idle detection circuit, and the drum winding tension stored in the winding tension storage circuit. A winding tension controller that corrects the output reference value of the tension reference calculation circuit according to the value.