JPH09172795A - Winder controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the tension control property during winding operation by detecting the instant when a front drum idles, and adding the amount of load shouldered until idling by the front drum, in the form of compensation of peed gain, and changing the operation over to the single operation of only the rear drum. SOLUTION: A drum idling detection circuit 38 detects the idling of a front drum. At the same time with the detection of idling, a speed gain compensating circuit 37 outputs the signals for the winding load of the front drum right before the idling to a rear drum speed control circuit 33. A rear drum variable speed driver performs the speed control and the tension control of the rear drum, according to the output value from the rear drum tension control circuit 22. With the timing of the drum idling detection circuit 38 having ceased to detect the idling of the front drum, it is recovered to the load sharing control in stationary condition by both drums.

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 When a wound product roll has a defect in a part thereof, an operator manually cuts (cuts or tears) the paper. The diameter of the roll in the raised portion is smaller than that in other portions, and the roll surface becomes non-uniform.

Therefore, of the two winding rolls (front drum roll and rear drum roll), the front drum side loses contact with the roll surface and slips (idling).
When the winding occurs, the front drum does not contribute to the normal winding operation, and the balance of the drum roll load sharing control, which is important for controlling the winding speed and the winding tension during the winding operation, becomes unbalanced. There was a problem that the taking could not be done smoothly.

[0004]

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 causes an overspeed more than a desired speed without load.

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 suddenly changes. Come on.

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

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 that the front drum bears from the moment when the idle idles to the time before idle. The winding machine control device that can improve the tension control characteristics during the winding operation by adding minutes to the rear drum in the form of velocity gain correction and switching to single lung operation of only the rear drum. It is intended to be provided.

[0008]

SUMMARY OF THE INVENTION A winder controller according to the present invention comprises a motor generator connected to a central shaft of a rewind roll to drive the rewind roll, and a rotation detecting a rotation speed of the motor generator. A speed detector, a rewinding roll variable speed driving device that drives the motor generator at a variable speed, a front drum that contacts the rotating surface of the winding roll and drives the winding roll to rotate, and a front drum that drives the front drum. An electric motor, a first rotational speed detector that detects the rotational speed of the front drum electric motor, a front drum variable speed drive device that drives the front drum electric motor at a variable speed, and a front that controls the tension setting of the front drum variable speed drive device. A drum tension control circuit, a rear drum that comes into contact with the rear surface of the winding roll and drives the winding roll to rotate, a rear drum motor that drives the rear drum, and a rear drum motor. A second rotation speed detector that detects the rotation speed of the drum motor, a rear drum variable speed drive device that drives the rear drum motor at a variable speed, a rear drum tension control circuit that controls the tension setting of the rear drum variable speed drive device, and a rewinding device. A tension detector that detects the tension of the web wound from the roll to the take-up roll, a take-up tension setting device that presets the take-up tension of the web, and a take-up speed that presets the take-up speed of the take-up roll. Setting device, loss compensation circuit that calculates load loss based on winding speed, acceleration / deceleration compensation circuit that calculates inertia moment compensation value during acceleration / deceleration operation based on the inertia moment of the rewinding roll, and winding tension setting device A tension reference calculation circuit that outputs a tension reference signal according to the take-up tension setting value, a winding hardness control circuit that controls the winding tension shared by the front drum and the rear drum, and a flon. Equipped with a drum idling detection circuit that detects idling of the drum or the rear drum, and a speed gain correction circuit that corrects the speed gain of the front drum speed control circuit or the rear drum speed control circuit based on the drum idling detection signal output from the drum idling detection circuit. It is characterized by that.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a winder control device according to the present invention will be described. 1 and 2, the motor generator 7 is a device that is connected to the central shaft of the rewinding roll 13 and drives the rewinding roll 13. The rotation speed detector 10 is, for example, a detector that is directly connected to the rotation shaft of the motor generator 7 and detects the rotation speed of the motor generator 7. The rewinding roll variable speed drive device 4 is a device that is connected to the motor generator 7 and drives the motor generator 7 at a variable speed. The front drum 16 is a drum that comes into contact with the front rotating surface of the winding roll 14 and rotates to drive the winding roll 14 to rotate. The front drum electric motor 9 is an electric motor that is mechanically coupled to the front drum 9 and drives the front drum 9. The rotation speed detector 12 is, for example, a detector that is directly connected to the rotation shaft of the front drum electric motor 9 and detects the rotation speed of the front drum electric motor 9. The front drum variable speed drive device 6 is a device that is connected to the front drum electric motor 9 and drives the front drum electric motor 9 at a variable speed. The front drum tension control circuit 23 shown in FIG. 2 is a circuit that is connected to the front drum variable speed drive device 6 and controls the tension setting of the front drum variable speed drive device 6. The rear drum 15 comes into contact with the rear rotating surface of the winding roll 14 and rotates to rotate the winding roll 1.
4 is a drum that rotationally drives 4. The rear drum motor 8 is mechanically coupled to the rear drum 15 to
Is an electric motor that drives. The rotation speed detector 11 is, for example, a detector that is directly connected to the rotation shaft of the rear drum electric motor 8 and detects the rotation speed of the rear drum electric motor 8. The rear drum variable speed drive device 5 is a device that is connected to the rear drum electric motor 8 and drives the rear drum electric motor 8 at a variable speed. The rear drum tension control circuit 22 is a circuit that is connected to the rear drum variable speed drive device 5 and controls the tension setting of the rear drum variable speed drive device 5. The tension detector 17 is a detector that detects the tension of the web 18 rewound from the rewinding roll 13 to the takeup roll 14, and the tension control circuit 21 controls the rewinding roll variable speed drive device 4. The winding tension setting device 2 is a setting device that presets the winding tension of the web (rolled material) 18, and the winding tension set value is detected by the rotation speed detector 12 or the rotation speed detection via the adders 35 and 36. It is added to the speed signal of the device 11 and added to the front drum speed control circuit 34 and the rear drum speed control circuit 33, respectively.
The winding speed setting device 3 is a setting device that presets the winding speed of the winding roll 14. The loss compensation circuit 27 is a circuit that calculates the load loss based on the winding speed. The acceleration / deceleration compensation circuit 29 is a circuit that calculates an inertia moment compensation value during acceleration / deceleration operation based on the inertia moment of the rewinding roll 13. The tension reference calculation circuit 28 is a circuit which is connected to the winding tension setter 2 and outputs a tension reference signal according to the winding tension set value of the winding tension setter 2. The load loss signal output from the loss compensation circuit 27, the tension reference signal output from the tension reference calculation circuit 28, and the inertia moment compensation value output from the acceleration / deceleration compensation circuit 29 are added by the adder 30, and the rear drum speed control circuit is added. The control signal output from 33 is added by the adder 31 and added to the rear drum tension control circuit 22. The winding hardness control circuit 32 is a circuit that is connected to the front drum speed control circuit 34 and the rear drum speed control circuit 33 and controls the winding tension shared by the front drum 16 and the rear drum 15. The drum idling detection circuit 33 is a circuit that controls the winding tension shared by the rotation speed detector 15. This is a circuit for detecting idle rotation of the front drum 16 or the rear drum 15. The speed gain correction circuit 37 is a circuit that corrects the speed gain of the rear drum speed control circuit 33 or the front drum speed control circuit 34 based on the drum idle detection signal output from the drum idle detection circuit 38.

That is, the motor generator 7 connected to the central shaft of the rewinding roll 13, the rotation speed detector 10 for detecting the rotation speed of the motor generator 7, and the rewinding for driving the motor generator 7 at a variable speed. The roll variable speed drive device 4, the front drum electric motor 9 and the rear drum electric motor 8 that drive the surface of the winding roll 14, the rotation speed detectors 11 and 12 that detect the rotation speeds of these electric motors, and the winding roll 14. A front drum variable speed drive device 6 and a rear drum variable speed drive device 5 that drive variable speed, a tension detector 17 that detects the tension of the web 18, a winding tension setting device 2 that sets the winding tension of the web 18, In accordance with the winding speed setting device 3 for setting the winding speed, the settings of the winding tension setting device 2 and the winding speed setting device 3, and the detection signals of the rotation speed detectors 10, 11 and 12, the rewinding roll variable speed is set. Drive equipment In the winding machine control device 1 which outputs a tension reference signal to 4 and a speed reference signal to the front and rear drum variable speed drive devices 5 and 6, a loss compensation circuit 27 which outputs a load loss depending on the winding speed, An acceleration / deceleration compensating circuit 29 that outputs an inertia moment compensation value during acceleration / deceleration operation based on the inertia moment of the entire return roll, and a tension reference signal to the front drum and rear drum variable speed drive devices 5 and 6 according to the settings of the winding tension setter 2. And a winding hardness control circuit 3 for controlling the winding tensions shared by the front drum 16 and the rear drum 15.
2 and a drum idling detection circuit 38 for detecting idling of one of the front drum 16 and the rear drum 15.
And a speed gain correction circuit 37 which receives a drum slip detection signal output from the drum slip detection circuit 38 and outputs a speed gain correction value of the other drum. . Then, for the winder controller 1, the set values of the winding tension setting device 2 and the winding speed setting device 3, the tension detector 17, the rotation speed detectors 10, 11, and 1 are set.
2. Actual operation data of each variable speed control device is input, the current reference is applied to the rewinding roll variable speed drive device 4, and the winding roll 14
The speed reference is output to the variable speed controller.

Further, FIG. 2 shows a structure in which, when a part of the product roll is cut, the timing at which one of the winding drums idles is detected and the speed gain is corrected for the other winding drum. Has been done.

FIG. 1 shows the positional relationship among the take-up roll 14, the rear drum 15, the front drum 16, and the cut position of the take-up roll 14.

That is, when the cut point (cut start position P) reaches the point A, the roll diameter r of the take-up roll 14 is smaller than that of the other parts, so that the front drum 16 is Gap between the winding roll 14 (hatched area)
Occurs, the front drum 16 loses contact with the winding roll 14 and slips. Therefore, the front drum 16 does not contribute to the load sharing control with the rear drum 15, and the tension on the winder is lost.

The drum idling detection circuit 38 detects idling of the front drum 16. Simultaneously with the slip detection, the speed gain correction circuit 37 causes the front drum 16 immediately before the slip to rotate.
The winding load of is output to the rear drum speed control circuit 33 as a speed gain correction value for the rear drum 15. The rear drum variable speed drive device 5 includes a rear drum tension control circuit 22.
The speed and tension of the rear drum 15 are controlled according to the output value of

Next, after the judged point passes the point A,
When the point B is reached, a gap (hatched portion) is formed between the winding roll 14 and the rear drum 15 and between the winding roll 14 and the front drum 16 at both contact points A and B. Since the take-up roll 14 can freely move in the vertical direction as shown by arrow K, it automatically drops downward, and again at the points A and B, the front drum 16 and the rear drum 15 again. It returns to the original state where it came into contact with.

Then, at the timing (time) when the drum idling detection circuit 38 stops detecting idling of the front drum 16, the rear drum 15 by the speed gain correction circuit 37 is detected.
The speed gain correction is stopped and the steady state load sharing control by both the front drum 16 and the rear drum 15 is restored.

In the present embodiment, the timing at which idling of the front drum is no longer detected is regarded as the point (point) for returning to normal operation, but the timing for returning control to normal operation is at a determined position. Reaches the point B and the take-up roll 14 falls, so that the point A
It is also possible to calculate the time required for the rotation between AB after the idling of the front drum 16 in the above is started.

That is, r is the winding roll radius [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 can be calculated as t = θ / ω = 60rθ / v [sec].

As described above, in the present invention, the contact between the surface of the winding roll is eliminated and the moment when one winding drum idles is detected by the drum idle detection circuit, and the idle rotation detection signal is output from this circuit. Then, the speed gain correction circuit adjusts the winding tension (load), which was being loaded by the idling winding drum, to the variable speed drive device of the other winding drum that is not idling. Output to the speed control circuit. At this point, the operation is switched to single lung operation using only one winding drum, and when the drum idle detection circuit stops detecting idle rotation of the winding drum, the winding tension correction for the other winding drum is stopped. At this point, it is possible to return to the normal operation state by both of the two winding drums.

As described above, the winding operation can be made smooth and efficient, and the yield of product roll production can be improved.

[0021]

According to the present invention, in spite of the simple structure, the winding operation by both the front drum and the rear drum is automatically changed to the single lung operation by the rear drum alone without depending on the manual operation by the human system. Switching is performed, and conversely, it is possible to return from single lung operation to normal operation by both the front drum and the rear drum, and there is an effect that speed control and tension control of the winder can be stably performed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a winder control device showing an embodiment of the present invention.

FIG. 2 is a block diagram illustrating the functions of FIG.

[Explanation of symbols]

 2 Winding tension setting device 3 Winding speed setting device 4 Rewinding roll variable speed driving device 5 Rear drum variable speed driving device 6 Front drum variable speed driving device 7 Motor generator 8 Rear drum electric motor 9 Front drum electric motor 10, 11, 12 rotations Speed detector 13 Rewinding roll 14 Winding roll 15 Rear drum 16 Front drum 17 Tension setting device 22 Rear drum tension control circuit 23 Front drum tension control circuit 27 Loss compensation circuit 28 Tension reference calculation circuit 29 Acceleration / deceleration compensation circuit 32 Roll solidity control Circuit 33 Rear drum speed control circuit 34 Front drum speed control circuit 38 Drum idle detection circuit

Claims (1)

[Claims] 1. A motor generator connected to a central shaft of a rewinding roll to drive the rewinding roll, a rotation speed detector for detecting a rotation speed of the motor generator, and a variable speed of the motor generator. A rewinding roll variable speed drive device for driving, a front drum for rotating the take-up roll by contacting a front rotating surface of the take-up roll, a front drum electric motor for driving the front drum, and a front drum electric motor for driving the front drum. A first rotation speed detector that detects a rotation speed, a front drum variable speed drive device that drives the front drum electric motor at a variable speed, and a front drum tension control circuit that controls tension setting of the front drum variable speed drive device. A rear drum that comes into contact with a rear surface of the winding roll to drive the winding roll to rotate, and a rear drum motor that drives the rear drum. A second rotation speed detector for detecting the rotation speed of the rear drum electric motor; and a rear drum variable speed drive device for driving the rear drum electric motor at a variable speed,
A rear drum tension control circuit that controls the tension setting of the rear drum variable speed drive device, a tension detector that detects the tension of the web rewound from the rewinding roll to the take-up roll, and a take-up tension of the web in advance. The take-up tension setter to set, the take-up speed setter to preset the take-up speed of the take-up roll, the loss compensation circuit to calculate the load loss from the take-up speed, and the moment of inertia of the rewinding roll. An acceleration / deceleration compensation circuit that calculates an inertia moment compensation value during acceleration / deceleration operation, a tension reference calculation circuit that outputs a tension reference signal according to the winding tension set value of the winding tension setter, and the front drum and the rear drum. A winding hardness control circuit for controlling the winding tension to be shared, a drum idling detection circuit for detecting idling of the front drum or the rear drum, and a drum idling detection circuit. The front drum speed control circuit or the rear drum speed control circuit winder control device comprising anda speed gain correction circuit for correcting the speed gain of the drum idling detection signal outputted from the detection circuit.