JPH0412687A - Winder controller - Google Patents

Abstract

PURPOSE:To protect a spool by operating and setting an acceleration/ deceleration time through a controller while considering the spool allowable torque of a rewind roll. CONSTITUTION:A winder controller comprises a winding rate setter 1 for setting the speed of a DC motor 13 such that the torque of a DC generator 15 for imparting tension on the paper of a rewind roll 14 will be within the spool allowable torque of the rewind roll, a unit 16 for operating the roll diameter based on the capacity of the DC generator 15 and the spool allowable torque of the rewind roll 14, a unit 17 for operating total inertia moment of the rewind roll 14, a rewinding rate setter 1, and an acceleration/deceleration time operating unit 19 for operating an effective acceleration/deceleration capacity based on operation results from the roll diameter operating unit 16 and the moment operating unit 17 and an output from the tension setter 2 and determining a minimum acceleration/deceleration time. A controller operates a set acceleration/ deceleration time and performs acceleration/deceleration upto the set speed without exceeding the spool allowable torque.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a winder control device for driving a paper winder.

(Prior Art) Generally, there is a DC generator that applies tension to the paper on the unwinding roll of a winder, a thyristor control device for driving the DC generator, a DC motor that drives the roll that winds the paper, and a DC motor drive. The acceleration/deceleration time of the thyristor control device is determined by the set times of the acceleration time setter and deceleration time setter.

For example, in a winding machine with a maximum winding speed of Nmax, the acceleration time setting is tac. , where the current winding speed is N and the set speed is N', the time required to reach the set speed N' (acceleration completion time) is t.

It is calculated by Therefore, the DC generator, DC motor, and thyristor control device output power to complete the acceleration at the time t.

However, in the conventional device, the DC generator, DC motor, and thyristor control device output as necessary depending on the settings of the acceleration time setter and deceleration time setter, so the spool allowable torque of the first unwinding roll is If the output torque is lower than the output torque of the generator and thyristor control device, the spool may be deformed or destroyed. Therefore, not only does this recovery require a large amount of effort, but also because winding machines generally complete one winding cycle in a cycle of about 10 minutes, this significantly reduces productivity at paper mills. I was letting it happen.

(Problem to be Solved by the Invention) When the allowable spool torque of the unwinding roll is less than the output torque of the DC generator and thyristor control device, the spool should be To provide a winding machine control device capable of accelerating and decelerating up to a set speed.

[Structure of the invention]

(Means for Solving the Problems) The present invention includes a DC motor that drives a roll for winding paper;
A DC generator that applies tension to the paper on the rewind roll, a tension setting device that sets the tension applied to the paper, a speed detector that detects the speed of the DC generator, and a paper density setting device that sets the density of the paper. A winding machine consisting of a paper III setting device that sets the paper width of the roll paper, a roll diameter setting device that sets the diameter of the unwinding roll, and a spool diameter switching device that changes the spool diameter of the rewinding roll. The control device includes a winding speed setting device that sets the speed of the DC motor so that the torque of the DC generator that applies tension to the paper on the rewind roll is within the permissible spool torque of the rewind roll, and a winding speed setting device that sets the speed of the DC motor so that the torque of the DC generator that applies tension to the paper on the rewind roll is within the permissible spool torque of the rewind roll; A roll diameter calculation device that calculates the roll diameter from the spool allowable torque of the rewind roll.

A precision setting device, a circumference ratio π, a paper width setting device, a UWW roll setting device, a spool diameter switching device, a moment calculation device that calculates the total moment of inertia of the rewinding roll from the moment of inertia of the spool and the moment of inertia of the DC generator, A winding machine control device comprising an acceleration/deceleration time calculation device that calculates the effective acceleration/deceleration capacity from the take-up speed setting device, the roll diameter calculation device, the calculation results of the moment calculation device, and the tension setting device and determines the minimum acceleration/deceleration time. It is.

(Function) By inputting the rotation speed of the unwinding roll into the controller, the allowable output capacity of the DC generator and thyristor control device at the spool allowable torque is calculated, and the required capacity and capacity due to the moment of inertia of the unwinding roll are calculated. By calculating the capacity required to apply tension to the paper and calculating the time required to complete acceleration/deceleration at the allowable output capacity, acceleration/deceleration is performed to the set speed without exceeding the spool allowable torque.

(Example) Next, an example of the present invention will be described. FIG. 1 shows a DC motor 13 that drives a roll that winds up paper 22, a DC generator 15 that applies tension to the paper on the rewind roll 14, a tension setting device 2 that sets the tension applied to each sheet of paper 22, and a DC power generator. Machine 15
a speed detector 18 that detects the speed of the paper 22, a paper density setter 3 that sets the density of the paper 22, a paper width setter 4 that sets the paper width of the roll paper, and a U-roll diameter setting that sets the rewind roll diameter. 5 and a spool diameter switch 6 that switches the spool diameter of the rewind roll 14. In the winder control device, a DC generator 15 applies tension to the paper on the rewind roll 14.
The winding speed setting device 1 sets the speed of the DC motor 13 so that the torque is within the spool allowable torque of the rewind roll, and the roll diameter is calculated from the DC generator capacity and the spool allowable torque of the rewind roll 14. roll diameter calculation device 16, paper density setting device 3, pi, paper width setting device 4, UW roll diameter film setting device 5, spool diameter switching device 6, moment of inertia of the spool, and moment of inertia of the DC generator 15. The effective acceleration/deceleration capacity is calculated from the moment calculation device 17 which calculates the total moment of inertia of the unwinding roll 14, the calculation results of the 1-winding speed setting device 1, the roll diameter calculation device 16, the moment calculation device 17, and the tension setting device 2. 2 shows a winding machine control device comprising an acceleration/deceleration time calculating device 19 that determines the minimum acceleration/deceleration time.

With the configuration of this embodiment, the torque of the DC generator 15 that applies tension to the paper on the rewind roll 14 is applied to the roll based on the rotational speed of the rewind roll 14 so that the torque is within the allowable spool torque of the rewind roll 14. calculate the allowable output capacity from the DC generator 15 and the thyristor control device 12, calculate the capacity due to the moment of inertia of the rewinding roll 14, and the capacity required to apply tension to the paper, The controller calculates and automatically sets the acceleration/deceleration time set value by comparing it with the allowable output capacity.

That is, first, the winding speed setting device 1, tension setting device 2, paper density setting device 3, paper width setting device 4, tV roll diameter film setting device 5, spool diameter switching device 6 are set in advance, and the As fixed data, set the DC generator capacity 6, spool allowable torque 7, pi 8, spool inertia 9, DC generator moment of inertia 10, and spool diameter 27.
In this state, when a driving command is given to the thyristor control devices 11 and 12 to start the DC motor 13 and at the same time to start the DC generator 15 that drives the rewind roll 14, the roll diameter calculation device 16 The roll diameter rotation speed when the roll diameter set by the Uv roll diameter membrane setting device 5 reaches the winding speed (m/wjn) set by the 1-winding speed setting device 1 is calculated, and the fixed data DC The possible output capacity P (kW) of the DC generator is calculated from the generator capacity 6 and the spool allowable torque 7. Now, suppose that the DC generator capacity is Po, the spool allowable torque is T, the 0110-le diameter is Du, the winding speed is V, the Uu rotational speed is N, and the pi is π. The values set by the paper density setting device 3, the pi circumference π, the paper width setting device 4, and the utm diameter setting device 5, the fixed data spool diameter 27, the moment of inertia of the DC generator 10, and the moment of inertia of the spool. 9, the rewinding roll total moment of inertia ΣGD2 is calculated. Current paper density M1 paper width, spool diameter 3. Moment of inertia of DC generator KM, moment of inertia of spool K
s, ΣGD"=-X7CXMXLX (Du4-
Ds') +K14+KS (kg-m) DC generator output capacity P and total inertia moment ΣG calculated by this moment calculation device 17 and roll diameter calculation device 16
D2, the values set by the tension setting device 2, paper width setting device 4, and winding speed setting device 1, and the speed feedback signal 18 of the DC generator are input to the acceleration/deceleration time calculation device 19, and the effective acceleration/deceleration capacity P' Calculate.

Find the minimum acceleration/deceleration time. Incidentally, since the calculation formulas are different for acceleration and deceleration, the winding speed at the time of inputting the operation command and the value of the winding speed setting device 1 are compared. Acceleration time tac Deceleration time jdee
, the speed of the DC generator is N', then at the time of an acceleration command and at the time of a deceleration command, however, the minimum value of the determined jacc+jdee is determined in accordance with the specifications of the winding machine.

The speed detector 20 detects the speed of the DC motor 13 by reading the acceleration/deceleration times tace and tdec calculated by the acceleration/deceleration time calculation device 19 in the same way as a human-based acceleration/deceleration time setting device, and returns the speed. No. 48 20a
Accordingly, the speed of the DC motor 13 is controlled by the phase control device 21 by comparing it with the speed reference signal 1a set by the winding speed setting device 1.

On the other hand, the tension of one sheet of paper 22 is detected by a tension detector 23,
This tension feedback signal 23a is compared with the tension reference signal 2a set by the tension setting device 2, and the tension of the DC generator 15 is controlled by the phase control device 24.

As the operation continues in this manner, the paper 22 is transferred from the rewind roll 14 to the take-up roll 25 and is wound up.

In addition, if there is a defective point on the paper 22 on the way, the DC motor 13 and the DC generator 15 are decelerated and stopped at that point, the defective point is repaired, and then the DC motor 13 and the DC generator 1 are
Accelerate 5 again. Therefore, the control device of this winding machine allows acceleration and deceleration to the set speed without exceeding the allowable torque of the spool.

〔Effect of the invention〕

According to the present invention, the spool can be effectively protected by calculating and setting the acceleration/deceleration time using the controller in consideration of the spool allowable torque of the rewind roll.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a winding machine control device showing an embodiment of the present invention. 1... Winding speed setting device, 2... Tension setting device, 6...
・Spool diameter switch, 16...Roll diameter calculation device, 1
7... Moment calculation device, 19... Acceleration/deceleration time calculation device. Agent Patent Attorney Norio Ogo

Claims (1)

[Claims] A DC motor that drives a roll for winding paper, a DC generator that applies tension to the paper on the unwinding roll, a tension setting device that sets the tension applied to the paper, and a speed detector that detects the speed of the DC generator. , a paper density setting device for setting the paper density, a setting device for setting the paper width of the roll paper, a rewinding roll diameter setting device for setting the rewinding roll diameter, and a spool diameter setting device for switching the spool diameter of the rewinding roll. In the winding machine control device, the speed of the DC motor is set so that the torque of the DC generator that applies tension to the paper on the unwinding roll is within the permissible spool torque of the unwinding roll. a speed setting device, a roll diameter calculation device that calculates the roll diameter from the DC generator capacity and the allowable spool torque of the rewinding roll, the paper density setting device, the pi, the paper width setting device, and the rewinding roll diameter. a moment calculation device that calculates a total moment of inertia of the unwinding roll from a setting device, the spool diameter switching device, a moment of inertia of the spool, and a moment of inertia of the DC generator, the winding speed setting device, and the roll diameter calculation device; A winding machine control device comprising an acceleration/deceleration time calculation device that calculates an effective acceleration/deceleration capacity from the calculation results of the moment calculation device and the tension setting device to determine a minimum acceleration/deceleration time.