JPH06110558A - Winding-up controller - Google Patents

Abstract

PURPOSE:To decrease a space for free loop while eliminating the detecting mechanism of a loop amount by controlling winding-up speed while adding a prescribed acceleration set value when restarting after a winding-up shaft is exchanged. CONSTITUTION:When a winding-up shaft motor 10 is stopped in the case of exchanging a winding-up shaft 9 since it is made full, a fed sheet member 8 is stored in a free loop 7. This storing amount is calculated by integrating difference between the output of a feeding amount detection circuit 13 and the output of a winding-up amount detection circuit 14 at a comparator circuit 15. When the winding-up shaft 9 is exchanged and operated by applying the speed command of an IN side section +alpha from an acceleration setter 17, the storing amount is gradually decreased, and the amount is calculated by the comparator circuit 15. When the storing amount is turned to zero, this is received by a switching circuit 16, and the control of the winding-up shaft 9 is switched from the speed control of the acceleration setter 17 to current control. At such a time, a current command signal is changed by an input limiter 19 for gradually changing it from a load current value to a set current value, and the winding-up shaft 9 can be smoothly changed to the set current value of normal operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding control device for a winding machine for a sheet material conveying line such as paper and film.

[0002]

2. Description of the Related Art In the prior art, in order to obtain a speed correction signal according to the loop amount in the reservoir, a complicated mechanism including a carriage and a reservoir position detector and a large space are required, and depending on the winding machine, There was a problem that it was difficult to install.

[0003]

That is, a complicated mechanism and a large space are required to obtain the loop amount in the reservoir, which causes a problem that mechanical attachment is not possible.

The present invention has been made based on the above reasons, and provides a winding control device in a free loop which requires a simple mechanism and a small space.

[0005]

According to the present invention, there is provided an entrance side section electric motor for driving an entrance side section roll of a sheet material to be conveyed, and an entrance side section speed detector for measuring a rotation speed of the entrance side section motor. A feed amount detection circuit that calculates the feed amount of the sheet material and outputs the feed amount signal based on the input section rotation speed signal from the input side section speed detector, and a sheet material free loop to the rear side. A take-up roll speed detector that detects the rotation speed of the take-up roll that is installed, a take-up shaft motor that is installed on the rear side of the take-up roll and that drives a take-up shaft that takes up the sheet material, and the take-up shaft motor. A winding shaft control device for controlling the rotation speed of the winding shaft motor;
From the load current value to the set current value, compare the load current of the take-up axis motor and the set current value of the take-up axis with an acceleration speed setter that gives the additional acceleration set value when restarting the take-up axis motor. An input limiter that outputs a gradually changing current setting change signal and a winding amount signal that outputs the winding amount signal by calculating the winding amount of the winding shaft from the winding roll rotation speed signal from the winding roll speed detector. It is added by a take-up amount inspection circuit, a comparison circuit that compares and calculates the feed-in amount signal and the take-up amount signal, and integrates the difference between the feed-in amount and the take-up amount and outputs the result. The winding control device is provided with a switching circuit for switching the acceleration set value or the current setting change signal and inputting it to the winding shaft control device.

[0006]

In the winding control device of the present invention, the entrance side section roll of the sheet material to be conveyed is driven, the rotation speed of the entrance side section motor is measured, and the entrance side section speed from the entrance side section speed detector is measured. The signal calculates the feed amount of the sheet material and outputs the feed amount signal to detect the rotation speed of the take-up roll installed on the rear side of the free loop of the sheet material, and further on the rear side of the take-up roll. Drives the take-up shaft that winds the sheet material with the take-up shaft motor installed in, controls the rotation speed of the take-up shaft motor, and gives the acceleration set value added at the time of restart acceleration of the take-up shaft motor. The load current of the winding shaft motor is compared with the current setting value of the winding shaft, a current setting change signal that gradually changes from the load current value to the set current value is output, and the winding roll speed detector takes up the winding roll. Depending on the rotation speed signal, The take-up amount is calculated and the take-up amount signal is output, the feed-in amount signal and the take-up amount signal are compared and calculated, the difference between the feed-in amount and the take-up amount is integrated and output, and the output of the comparison circuit The acceleration setting value or current setting change signal added by the signal is switched and input to the winding axis control device.

[0007]

EXAMPLE An example of the present invention will be described below. In FIG. 1, 2 is an entrance side section electric motor 8 for driving the entrance side section roll 1 of a sheet material 8 to be conveyed, 4 is an entrance side section speed detector for measuring the rotation speed of the entrance side section motor 2, 13 is an entrance side A feed amount detection circuit that calculates the feed amount of the sheet material 8 and outputs the feed amount signal by the input side section rotation speed signal from the section speed detector 4, 6 is provided after the free loop 7 of the sheet material 8. Winding roll speed detector for detecting the rotation speed of the winding roll 5 installed on the side,
The sheet material 8 is installed on the further rear side of the winding roll 5.
A take-up shaft motor for driving the take-up shaft 9 for taking up the take-up shaft, 11 a take-up shaft control device for controlling the rotation speed of the take-up shaft motor 10,
Reference numeral 17 is an acceleration speed setting device which gives an acceleration set value added at the time of restart acceleration of the winding shaft motor 10, and 19 is a load current which compares the load current of the winding shaft motor 10 with the current setting value of the winding shaft 9. An input limiter that outputs a current setting change signal that gradually changes from a value to a set current value, and 14 is a winding shaft 9 according to the winding roll rotation speed signal from the winding roll speed detector 6.
The winding amount inspection circuit for calculating the winding amount of the above and outputting the winding amount signal, 15 compares and calculates the feeding amount signal and the winding amount signal, and integrates the difference between the feeding amount and the winding amount. Comparing circuit for outputting
Reference numeral 6 denotes a winding control device including a switching circuit for switching the acceleration setting value or the current setting change signal added by the output signal of the comparison circuit 15 and inputting the signal to the winding shaft control device 11. Previously, when replacing the take-up shaft, in the transport line for sheet material such as paper and film that has a reservoir for storing the fed sheet from the previous stage, calculate the feed amount of the input side section and output it The detection circuit 13 and the winding amount detection circuit 14 which calculates and outputs the winding amount of the winding shaft 9.
And the output of the feed amount detection circuit 13 and the output of the winding amount detection circuit 14 are compared and calculated, the difference is integrated and output, and the output of the comparison circuit 15 is received by the winding section control device 3. Switching circuit 16 for switching the control method, and winding shaft 9
The acceleration speed setting device 17 for giving the speed command of the entry side speed + α to the winding shaft control device 11 at the time of restart acceleration, the load current value of the winding shaft motor 10, and the setting value of the winding shaft current setting device. In comparison, the winding control device includes an input limiter 19 that outputs a signal that gradually changes from the load current value to the set current value, and the sheet material accumulates during normal winding operation, that is, in the free loop. When not looped and the loop amount is zero,
The winding shaft is operated by current control at the current value set by the current setting device.

On the other hand, when the winding shaft 9 is fully wound and the winding shaft motor 10 is stopped when the winding shaft 9 is replaced, the sheet material 8 fed from the entry side section is free looped.
Will be saved in. Since the free loop 7 is included, the entrainment amount is the output of the entrainment amount detection circuit 13 and the entrainment amount detection circuit 14.
Is calculated, and the difference is integrated by the comparison circuit 15. In addition, since the free loop 7 is included, the winding amount is 9
Will be accumulated until the start of operation. The take-up shaft 9 is replaced with a new one, and the new take-up shaft 9 is given a speed command for the entry side section + α by the acceleration speed setting device 17 and is speed-controlled at the speed of the entry side section + α. Is operated at the speed of the entry side section + α, the amount of jamming gradually decreases due to the free loop 7, and the amount is calculated by the comparison circuit 15. When the accumulated amount is zero, that is, when the output amount of the feed amount detection circuit 13 and the output amount of the winding amount detection circuit 14 become equal and the output of the comparison circuit 15 becomes zero, the zero output of the comparison circuit 15 is set to the winding shaft. The switching circuit 15 for switching the control system of 9 receives the control of the winding shaft 9 from the speed control by the command signal from the acceleration speed setting device 17 to the current control by the command signal from the current setting device.

At this time, the current command signal to the control device for the winding shaft motor is gradually changed from the load current value to the set current value of the current setter by the input limiter 19 to set the current from the load current value at the time of switching. The input gradually changes to the set current value of the device, and the winding shaft 9 can smoothly shift from the current value at the time of switching to the set current value at the time of current control in normal operation.

That is, in FIG. 1, the feed amount detection for calculating the feed amount of the input side section by the output signal from the input side section speed detector 4 in the preceding stage of the winding shaft and outputting a signal corresponding to the feed amount. The circuit 13 and the output signal of the winding roll speed detector 6 calculate the bad winding and output a signal corresponding to the winding amount, and the output of the feeding amount detection circuit 13 and the winding amount. The outputs of the charge amount detection circuits 14 are compared, the differences are integrated,
Control of the take-up axis control device 11 in response to the output of the comparison circuit 15 that outputs a signal corresponding to the loop amount of the free loop 7 and the output of the comparison circuit 15 being zero, that is, the loop amount of the free loop 7 being zero. Acceleration speed setting device 1
Switching circuit 16 for switching from speed control by a command signal from 7 to current control by a command signal from the current setter 18
And an acceleration speed setting device 1 which gives a speed command for the entry side section + α to the winding shaft control device 11 when the winding shaft 9 is restarted and accelerated.
7 and an input limiter 19 that compares the load current value of the winding shaft motor 10 with the set value of the current setting of the winding shaft 9 and outputs a signal that gradually changes from the load current value to the set current value. The winding control device provided is shown.

That is, 1 is an inlet side section located in front of the winding shaft 9, 2 is an inlet side section motor for driving the inlet side section 1, 3 is an inlet side section control device for controlling the inlet side section motor, and 4 is Entry side section motor 3
The inlet section speed detector for detecting the speed of the inlet section, 5 is a winding roll that rotates at the same speed as the surface speed of the winding shaft 9, and 6 is attached to the winding roller 5, A take-up roll speed detector for detecting the speed of the take-in roll 5, a free loop 7 for accumulating the sheet material 8 from the entrance side section 1 by stopping the take-up shaft 9 at the time of replacement, and the accumulated amount is zero during normal operation. It has become. 8 is a sheet material that is conveyed from the entry side section 1 and is wound by a winding shaft 9, and 9 is a winding shaft that winds the sheet material 8 and is temporarily stopped when a specified full winding amount is wound, and another empty space is provided. This is a mechanism for repeating the operation of replacing the take-up shaft with a new take-up shaft and newly taking up the sheet material 8. 10 is a winding shaft motor that drives the winding shaft 9, 11 is a winding shaft control device that controls the winding shaft motor 10, 12 is a current detector that detects the load current value of the winding shaft motor 10, and 13 is A feed amount detection circuit that receives the output of the entry side section speed detector 4 and calculates the feed amount of the entry side section 1 and outputs a signal corresponding to the feed amount, 14 indicates the output of the winding roll speed detector 6. A winding amount detection circuit that receives and calculates a winding amount and outputs a signal corresponding to the winding amount. Reference numeral 15 compares the output of the feeding amount detection circuit 13 and the output of the winding amount detection circuit 14, and determines the difference. This is a comparison circuit that integrates and outputs, that is, a signal corresponding to the loop amount of the free loop 7. 16 receives the output of the comparison circuit 15, and when the output is zero, that is, the loop amount of the free loop 7 has become zero, the winding shaft control device 11
A switching circuit for switching the control method of (1) from speed control based on a command signal from the acceleration speed setting device 17 to current control based on a command signal from the current setting device 18, and 17 is a winding axis control device
In the acceleration speed setting device that gives a command signal of the speed of the entry side section + α to the winding shaft 9, the winding shaft 9 is operated at the speed set by the acceleration speed setting device at the time of restart after replacement. The amount of loop accumulated in the free loop 7 will decrease while it is stopped by replacement.

Further, the input side section + α of the set value of the acceleration speed setter changes correspondingly depending on the output signal level of the comparison circuit 15, and when the free loop amount is zero, the set value is the input side section. It will be equal. Reference numeral 18 is a current setting device that gives a specified current setting value to the winding shaft control device 11 during normal operation. The input limiter outputs a signal that gradually changes from the value to the set value of the current setter 18.

With the above configuration and operation, a complicated mechanism and a large space for obtaining a velocity correction signal according to the loop amount in the reservoir are unnecessary, and the problem of mechanical attachment is eliminated.

[0014]

According to the present invention, the winding control can be performed even with a free loop having a simple and small space without a mechanism for detecting the amount of loop, and the problem that mechanical attachment is not possible can be eliminated.

[Brief description of drawings]

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

[Explanation of symbols]

 4 Input side section speed detector 6 Winding roll speed detector 10 Winding shaft motor 11 Winding shaft control device 12 Current detector 13 Feed amount detection circuit 14 Winding amount detection circuit 15 Comparison circuit 16 Switching circuit 17 Acceleration speed Setting device 19 Input limiter

Claims (1)

[Claims] 1. An entrance-side section motor that drives an entrance-side section roll of a sheet material to be conveyed, an entrance-side section speed detector that measures a rotation speed of the entrance-side section motor, and an entrance-side section speed detector. The feed amount detection circuit that calculates the feed amount of the sheet material by the input side section rotation speed signal and outputs the feed amount signal, and the winding roll installed on the rear side of the free loop of the sheet material. A take-up roll speed detector that detects a rotation speed, a take-up shaft motor that is installed on the rear side of the take-up roll and drives a take-up shaft that takes up the sheet material, and the rotation of the take-up shaft motor. A winding shaft control device for controlling the speed, an acceleration speed setting device for giving an acceleration set value added at the time of restart acceleration of the winding shaft motor, a load current of the winding shaft motor, and a winding shaft current setting. Ratio values In comparison, an input limiter that outputs a current setting change signal that gradually changes from the load current value to the set current value, and the winding of the winding shaft by the winding roll rotation speed signal from the winding roll speed detector. A winding amount inspection circuit that calculates a winding amount and outputs a winding amount signal is compared with the feeding amount signal and the winding amount signal to calculate a difference between the feeding amount and the winding amount. A winding circuit comprising a comparison circuit for integrating and outputting, and a switching circuit for switching the added acceleration set value or the current setting change signal by an output signal of the comparison circuit and inputting the signal to the winding shaft control device. Control device.