JPS63143157A - Correcting method for mechanical loss data of winder - Google Patents

Abstract

PURPOSE:To automatically correct the mechanical loss data by calculating the compensation data of the mechanical loss and comparing it with the preset mechanical loss data to determine the correction coefficient at the time of pre-drive. CONSTITUTION:When an A-axis motor 22 is winding and a B-axis motor 2 starts the pre-drive, a switch 5 is set to the speed control mode contact 7 side, and the speed is synchronized with the line speed. After synchronization is completed, a speed feedback signal 11 and torque commands N, T are read. Next, the compensation torque TMC for the mechanical loss at the speed N is determined based on the mechanical loss data in a tension controller 8, the correction coefficient K=T/TMC is calculated, the mechanical loss data are multiplied by K and written in the mechanical compensation data. When the B-axis is operated for winding after the rewinding action, the switch 5 is set to the contact 6 side, and mechanical loss compensation is performed via the data at the time of pre-drive. Accordingly, winding can be performed invariably with the fixed tension.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an apparatus for winding a long material with a constant tension.
The present invention relates to a method for correcting mechanical loss data.

[Conventional technology]

For example, when winding up a metal strip, a long film material, or the like onto a take-up roll, it is necessary to wind it up at a constant tension in order to prevent distortion and the like from occurring.

The configuration of a general winding device system is shown in FIG. 3. Reference numeral 1 denotes a winding roll, which is driven by an electric motor 2. The tension and speed of this electric motor 2 are set by a tension setting device 9 and a speed setting device 13, respectively, and by a switching device 5,
It can be switched between six contact points for the winding mode and seven contact points for the speed control mode.

In the winding mode, the speed feedback signal 11 of the electric motor 112 detected by the speed detector 3 and the long material speed signal 16 detected by the long material speed detector 15 are input to the tension controller 8, and the tension is set. A torque command signal is sent to the current controller 4 by calculation with the value set by the controller 9, and the tension of the electric motor 2 is controlled.

In the speed control mode, the deviation between the speed feedback signal 11 and the speed reference value set by the speed setter 13 is sent to the speed controller 12, and the current controller 4 performs speed control. During normal line operation, the take-up mode is used, and when the take-up machine is to be operated at full size or reverse size, it is controlled by switching to speed mode.

In this winding device, mechanical loss becomes a problem.

In a winding/take-up device without a tension detector, the required torques T and l of the electric motor are calculated as follows.

TM ”Tyn+Txc+T+c ・+・++・+
+...+++tl) However, TtH: Tension bone torque T'xc: Mechanical loss compensation torque T1. : Inertia acceleration/deceleration compensation torque tension bone torque T? N is calculated based on parameters such as the tension setting, the diameter of one turn, and the gear ratio. During line operation at a constant speed, T+c=0.

Here, if the mechanical loss compensation torques T and lc cannot be compensated accurately, the tension will not be as set.
This is clearer than the fl1 expression.

Conventionally, the mechanical loss compensation data has been written in the mechanical loss compensation data in the tension controller 8 by setting the switching device 5 to the speed control mode and measuring the mechanical loss at the time of trial run adjustment or maintenance inspection.

[Problem that the invention seeks to solve]

In this conventional method, the mechanical loss compensation data once set does not change, so if the mechanical loss changes due to machine adjustments or changes in ambient temperature, the tension will change.

The present invention was made in view of the above circumstances, and an object of the present invention is to automatically correct mechanical loss compensation data and perform control to maintain a constant tension even in the face of fluctuations in external conditions. do.

[Means for solving problems]

In order to achieve this object, the mechanical loss data correction method for a winding device of the present invention is a device that winds a long material at a constant tension, and which has a mechanical loss compensation function. Automatically measured value of mechanical loss for take-up roll speed at
A correction coefficient is obtained by comparing the mechanical loss compensation value calculated from the mechanical loss data of the tension controller at the winding roll speed, and the mechanical loss data is corrected by the correction coefficient during the rewinding operation. do.

[Effect]

In the present invention, during the rewinding operation of the take-up roll, pre-drive, that is, synchronized operation in which the circumferential speed of the new roll is made to match the line speed in advance in order to rewind without stopping the line, is performed. Automatically measure mechanical loss. Then, a correction coefficient is determined by comparing the measured value at the take-up roll speed at the time of completion of pre-drive with mechanical loss data previously set in the tension controller at that speed. Based on this correction coefficient, the mechanical loss data set in the tension controller is corrected to perform mechanical loss compensation in the next winding operation.

This makes it possible to always wind up a long material with a constant tension even when the machine is adjusted or the ambient temperature changes.

(Example) Hereinafter, the present invention will be specifically described based on an example shown in the drawings.

FIG. 2 is a block diagram of an apparatus for implementing the automatic mechanical loss correction method of the present invention. In Figure 2,
1 is a B1111 take-up roll, and 21 is an A-axis take-up roll. 22 is an A-axis heavy machine for driving the A-axis take-up roll 21. In FIG. 2, parts corresponding to those in FIG. 3 are given the same reference numerals and their explanation will be omitted.

FIG. 1 is an example of a flow chart for implementing the present invention.

To explain the present invention in detail with reference to FIG. 1, first, when the A-axis heavy machine 22 is winding and the B-axis heavy machine 2 starts pre-drive for rewinding, the switching device 5 controls the speed. It becomes a contact point on the mode 7 side and synchronizes with the line speed. When synchronization is complete, a 10 second timer starts. Speed feedback signal IHN□ with 1 second sampling after 10 seconds has elapsed)
and torque command 10 (T++ty) are read five times, and their average values N AV and T 4 v are calculated.

According to the mechanical loss data in the tension controller 8, the speed is N.
Mechanical loss compensation torque T1. Calculate IC.

k=T^w/Tnc ・・・・・・・・・・・・
(2) Calculate the correction coefficient k using equation (2). The mechanical loss data in the tension controller 8 is multiplied by , and written as mechanical loss compensation data.

After the rewinding operation, when the B axis performs a winding operation, the switch 5 becomes a contact point on the winding mode 6 side, and performs mechanical loss compensation using data corrected during pre-drive.

〔Effect of the invention〕

As described above, in the present invention, mechanical loss compensation data is calculated during pre-drive, and the correction coefficient is determined by comparing the calculated data with preset mechanical loss data. That's what I do.

This allows mechanical loss data to be automatically corrected during line operation without any special operations. Therefore, it is possible to always wind up a long material with a constant tension even when external conditions change, which is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a flowchart for implementing the present invention, and FIG.
The figure is a block diagram of a winding device to which the method according to the present invention is applied, and FIG. 3 is a block diagram of a general winding device. bBB shaft take-up roll 2: B-axis heavy machine 3: B-axis speed detector 4: B-axis current controller 5: B-axis switch 6: B-axis winding mode 7: B-axis speed control mode 8: B-axis tension control Device 9: B-axis tension setting device 10: B
Axis torque command

Claims (1)

[Claims] 1. In a winding device that winds a long material with a constant tension and has a mechanical loss compensation function, the value of the mechanical loss automatically measured for the winding roll speed at the time of completion of pre-drive and the winding. A correction coefficient is obtained by comparing a mechanical loss compensation value calculated from mechanical loss data of a tension controller at a take-up roll speed, and the mechanical loss data is corrected by the correction coefficient during a rewinding operation. A method for correcting mechanical loss data of a sampling device.