JPH04138093A - Winder controller - Google Patents

Abstract

PURPOSE:To utilize the capacity of winder facility upto the rating thereof and to shorten the operating time per a single winding roll by determining the diameter of a rewind roll based on outputs from a rewind roll speed detector and a winding drum speed detector, determining the flywheel effect of the rewind roll based on the diameter of the rewind roll and then determining an accelerating/decelerating time of the rewind roll based on the flywheel effect of the rewind roll and the capacity of a rewind roll driver. CONSTITUTION:Diameter of a rewind roll is determined by a rewind roll diameter operating circuit 13 based on outputs from a rewind roll speed detector 3 and a winding drum speed detector 9 and the diameter of a rewind drum. GD<2> (flywheel effect) of the rewind roll is then determined by a rewind roll GD<2> operating circuit 14 based on a rewind roll diameter D, a roll width L and a roll density rho. An accelerating/decelerating time operating circuit 16 then operates an accelerating/decelerating time based on a GD<2>= piD<4>Lrho/4 of roll the capacity 15 of a roll driver and a winding speed reference 17, and an acceleration/deceleration rate limit circuit 18 determines the acceleration/ deceleration rate of the winder driver based on the winding speed reference and the accelerating/decelerating time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a winding machine control device for unwinding and rewinding a sheet-like roll of paper or plastic.

(Prior art) When a roll of material wound by a paper machine or a drawing machine is divided into product rolls of appropriate length by a winder, the acceleration/deceleration time of the winder is determined based on the maximum GD2 of the unwinding roll. (flywheel effect)
This was determined based on the capacity of the drive unit.

(Problem to be solved by the invention) In the conventional technology, even if the roll diameter of the unwinding roll decreases every time the product roll is wound and GD2 decreases, the acceleration/deceleration time does not change. When downsized, there was a drawback that the capacity of the drive device could not be utilized up to its rated capacity.

In view of the above-mentioned problems, the present invention provides a control device for a winding machine that can utilize the equipment capacity of the winding machine up to its rated capacity, shorten the operating time per winding roll, and improve operational efficiency. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a rewind roll drive motor that drives a rewind roll, a rewind roll speed detector that measures the rotational speed of the rewind roll drive motor, A take-up drum drive motor that drives a take-up drum used in combination with a rewind roll, a take-up drum speed detector that measures the rotational speed of the take-up roll drive motor, and a take-up drum speed detector that measures the rotational speed of the take-up roll drive motor. a rewind roll diameter calculation circuit that calculates the diameter of the rewind roll from the output signal and the output signal of the rewind roll speed detector;
A rewind roll GD2 calculation circuit that calculates the GD2 value of the rewind roll from the output of the rewind roll diameter calculation circuit, and a rewind roll GD2 calculation circuit that calculates the GD2 value of the rewind roll from the output of the rewind roll GD2 calculation circuit and the output of the rewind roll drive device capacity circuit. A winding machine control device comprising: an acceleration/deceleration time calculation circuit for determining the acceleration time or deceleration time of be.

(Function) Detects the speed of the rewind roll drive device that drives the rewind roll, detects the speed of the take-up drum drive device that drives the take-up roll, and detects the speed of the rewind roll speed detector and the take-up drum speed. The diameter of the unwinding roll is determined from the detector, and the GD2 of the unwinding roll is determined from the diameter of the unwinding roll.
The acceleration time and deceleration time of the rewind roll are determined from the capacity of the rewind roll drive device, and the acceleration/deceleration rate of the winder drive device is determined from the acceleration/deceleration time.

(Example) Next, an example of the present invention will be described. FIG. 1 shows a rewind roll drive motor 2 that drives a rewind roll 1, a rewind roll speed detector 3 that measures the rotational speed of the rewind roll drive motor 2, and a rewind roll used in combination with the rewind roll 1. A winding drum drive motor [7] that drives the winding roll 4, a winding drum speed detector 9 that measures the rotational speed of the winding drum drive motor 7, and an output signal of the winding drum speed detector 9 and rewinding. A rewind roll diameter calculation circuit 13 that calculates the diameter of the rewind roll 1 from the output signal of the roll speed detector 3, and a rewind roll that calculates the GDZ value of the rewind roll 1 from the output of the rewind roll diameter calculation circuit I3. a diameter calculation circuit 14; an acceleration/deceleration time calculation circuit 16 that calculates the acceleration time or deceleration time of the rewind roll 1 from the output of the rewind roll GD2 calculation circuit 14 and the output of the rewind roll drive device capacity circuit 15;
A winding machine control device is shown which includes an acceleration/deceleration rate limiting circuit 18 that determines the acceleration/deceleration rate of the winding drum drive motor 7 based on the output of the acceleration/deceleration time calculation circuit 16.

That is, the rewind roll drive motor 2 drives the rewind roll 1, the rewind roll speed detector 3, the winding drums 5 and 6 that drive the winding roll 1, and the winding drum 5.6. A control device for controlling the winding drum drive motor and the winding drum speed detector 9, the rewind roll drive motor 2 and the winding drum drive motor 7, the rewind roll speed detector 3 and the winding drum speed detector 9. Rewinding roll 1 due to the speed difference of
A rewinding roll diameter calculation circuit 13 calculates the roll diameter of the rewinding roll 1 from the width of the rewinding roll 1 and the roll density of the rewinding roll 1.
a rewind roll GD2 calculation circuit 14 for calculating GD2 of;
An acceleration/deceleration time calculation circuit 16 that calculates the shortest acceleration/deceleration time from the rewind roll GD2 and the rewind roll drive device I5, a speed reference circuit 17 that determines the operating speed of the winder, and a speed reference circuit 17 that determines the speed of the control device based on the slope of the acceleration/deceleration time. This winder control device includes an acceleration/deceleration rate limiting circuit 18 that changes a reference input, and a torque limiting circuit that limits the output torque of the rewinding roll drive device according to the roll diameter of the rewinding roll 1.

GD2 of the unwinding roll 1 is proportional to the fourth power of the roll diameter, and acceleration/deceleration time is proportional to GD2 if the drive capacity is the same, so the roll diameter decreases each time a product roll is wound from the unwinding roll 1. is detected by the unwinding roll speed detector 3 and the winding drum speed detector 9, and the diameter of the unwinding roll 1 is calculated from this and the diameter of the winding drum 5.
Calculate the CD2 of the unwinding roll at that time from the mouth-small density, calculate the acceleration time from stop to operating speed and the deceleration time from operating speed to stop from roll GD2 and unwinding roll drive capacity 15, and then is the acceleration/deceleration gradient of the winding drum control device 11 on the unwinding roll 1.

Here, W is the weight ffi of the roll, and D is the roll diameter.

Also Here, L is the roll width, ρ is the roll density.

Here, N is the driving speed, Ta is acceleration torque Ru.

A rewind roll drive motor 2 that drives the rewind roll 1 is controlled by a rewind roll control device IO. The winding drums 5 and 6 that drive the winding roll 4 and the winding drum drive motor 7.8 that drives the winding drum are controlled by a winding drum drive control device 11.
Controlled by 12. The roll diameter of the rewinding roll is calculated by the rewinding roll diameter calculation circuit 13 from the rewinding roll speed detector 3, the winding drum speed detector 9, and the winding drum diameter.

Next, the rewind roll GD2 is calculated by the rewind roll CD2 calculation circuit 14 from the rewind roll diameter, roll width, and roll density. The acceleration/deceleration time calculation circuit 16 calculates the acceleration/deceleration time from the rewind roll drive capacity 15 and the winding speed standard 17, and then the acceleration/deceleration rate limiting circuit 18 calculates the acceleration/deceleration time from the winding speed standard and the acceleration/deceleration time. Determine the acceleration/deceleration rate of the drive device.

FIG. 2 shows the initial unwinding roll, and FIG. 3 shows the winding speed and winding time per product roll using the diameter of the unwinding roll when several product rolls are wound.

When winding the first product roll from the initial unwinding roll at the second exit, the roll diameter of the unwinding roll is the maximum and therefore C
D2 is also the maximum. Acceleration time 23 and deceleration time 24 determined from CD2 and drive device capacity are maximum, and winding time 2
2 is the longest length, 27 is the winding speed, and 25.26 is the acceleration gradient and deceleration gradient of the control device at this time, respectively.

On the other hand, FIG. 3 shows a case where several product rolls are wound up and the next product roll is wound from a state where the diameter of the unwinding roll is reduced to 28, and the diameter of the unwinding roll is smaller than the initial diameter.
Therefore, the roll diameter and roll width.

CD2 determined from the roll density is also small, and the shortest acceleration time determined from CD2 and drive device capacity is 30. Minimum deceleration time 31
Both can be made smaller than the initial unwinding roll diameter, and the winding time 29 per product roll can be shorter than when winding the first product roll. 34 is the winding speed, and 32 and 33 are the acceleration gradient and deceleration gradient of the control device at this time, respectively.

[Effects of the Invention] According to the present invention, as the diameter of the unwinding roll is reduced, the operating time per product roll can be shortened, and a winding control device for a winding machine is provided that can improve the operating efficiency of the equipment. be able to.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a winding control device showing one embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams thereof. 3... Rewinding roll speed detector 9... Winding drum speed detector 13... Rewinding roll diameter calculation circuit 14... Rewinding roll CD2 calculation circuit 15... Rewinding roll drive device capacity 16... Acceleration/deceleration time calculation circuit 17... Winding speed reference 18... Acceleration/deceleration rate limiting circuit 1

Claims (1)

[Claims] A rewind roll drive motor that drives the rewind roll, a rewind roll speed detector that measures the rotational speed of the rewind roll drive motor, and a rewind roll drive motor that drives the take-up roll used in combination with the rewind roll. A take-up drum drive motor, a take-up drum speed detector that measures the rotational speed of the take-up drum drive motor, and an output signal of the take-up drum speed detector and an output signal of the rewind roll speed detector to determine the winding speed. a rewind roll diameter calculation circuit that calculates the diameter of the rewind roll; a rewind roll GD^2 calculation circuit that calculates the GD^2 value of the rewind roll from the output of the rewind roll diameter calculation circuit; an acceleration time calculation circuit that calculates the acceleration time or deceleration time of the rewind roll from the output of the roll GD^2 calculation circuit and the output of the rewind roll drive device capacity circuit; A winding machine control device comprising an acceleration/deceleration rate limiting circuit that determines the acceleration/deceleration rate of a drive motor.