KR100361777B1 - Side Notch Automatic Control Method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side notcher automatic control method for removing notches generated after welding strips having different widths and strips in a cold rolling process, and in particular by a manual operation. The present invention relates to a method of automatically controlling a side-notch that can improve production efficiency and quickly control by converting an operation into an automatic operation, the first step of which an end of a preceding strip and a trailing strip are welded by a welding machine and then moved to a check position; A second step of determining whether a notch is formed in the welded portion of the strip at the check position; a third step of obtaining a value obtained by subtracting the moving distance of the notch position from the distance of the check position; and using the subtracted program logic for line control. The fourth step of inputting to the controller and the work side and drive side running are performed by the welder notch control. A fifth step of performing a step, a sixth step of calculating and transmitting a data memory to a DC motor controller and reversing the strip, a seventh step of detecting the strip by the optical sensor of the side notch, and stopping the strip; After removing the notch portion of the strip characterized in that it provides an automatic side notch control method comprising the eighth step of transferring to the next process.

Description

Side Notch Automatic Control Method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of automatically controlling a side notcher for removing notches generated in a welded part when welding strips and strips having different widths in a cold rolling process. This invention relates to a method for automatically controlling side-notch that can improve production efficiency and control quickly by switching to automatic operation.

1 is a view showing a conveyor system equipped with a welder and a side notch, Figure 2 is a view showing a side notch for removing the notch generated in the weld when welding the strip and the strip in the cold rolling process.

The side notch 2 has a sharp width deviation at the weld 11 of the preceding strip 9 and the trailing strip 10 after the preceding strip 9 and the trailing strip 10 are welded by the welder 1. It is a facility for cutting on both sides of the strip in the same shape as the notching portions 12-1 and 12-2 so as to remove the notch formed by the. In order to form the shapes of the notching portions 12-1 and 12-2, both sides of the strip are cut while the cylinders 13-1 and 13-2 are advanced back and forth.

At this time, the automatic operation of the side notch 2 is enabled by the driver selecting the automatic mode before welding in the welding machine 1. However, when the automatic mode is selected after the welding is completed due to the driver's error, the automatic operation of the side notch becomes impossible. Therefore, the driver changes the width of the preceding strip 9 and the trailing strip 10 and the welded portion at the check position 3. (11) When both sides are checked and an abnormality occurs, after backward operation of the abnormal part to the working position of the notch 2 by manual operation, the both sides of the abnormal part are cut and notched parts 12-1 and 12-2. ) To form the shape.

In other words, when welding the leading strip 9 and the trailing strip 10 in progress, the side notches 2 are provided in order to remove the notch portion due to the sudden width difference between the two strips in the welding portion 11. The check position 3 is located at a position spaced apart from the side notch 2, and the operator checks the abnormality of the weld 11 or the width deviation of both strips in the check position 3. As described above, the reason why the operator determines whether there is a notch at the check position 3 is that the notch may not be removed from the side notch 2.

In this case, the operator rotates the DC motors 7-1 and 7-2 manually by manually operating the control button. When the notch part is located in the side notch by manually rotating the back side, the side of the strip is cut in the shape of the notching parts 12-1 and 12-2. After that, the strip is processed again.

However, in the above-described notch control method, the operator manually reverses the strip so that the operator cannot accurately grasp the retraction distance. As a result, the operator does not accurately position the notch of the strip in the side notch, thereby removing the notch. Delays occur.

The present invention is to solve the above-described problems, when the notch is not removed due to the malfunction of the side notch, to provide a side notch automatic control method that can work quickly by automatically backing the notch to the side notch accurately Its purpose is to.

In order to achieve the above object, the present invention provides a first step of moving the welded portion formed by welding the ends of the preceding strip and the trailing strip to the check position, and the notch portion is formed in the weld portion of the strip in the check position. A second step of checking whether there is a presence; a third step of obtaining a value obtained by subtracting the distance of a no-position position in the welder from the distance of the check position in the welder; and a fourth step of inputting the subtracted value into the program logic controller for line control. And a fifth step in which work side and drive side running are performed by welder notch control, a sixth step of calculating a data memory, transmitting the data memory to a DC motor controller, and reversing the strip; The seventh step of detecting and stopping the strip; Characterized in that the lip is provided to the subsequent step side nocheo automatic control method comprising an eighth step in which the transfer.

1 shows a conveyor system in which a welder and side notches are installed.

Figure 2 is a view showing a side notch to prevent a sudden width change in the welding portion of the strip and strip in the cold rolling process.

3 is a block diagram of a method for automatically controlling side notches according to the present invention.

4 is a flowchart of a method for automatically controlling a side notch according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: welding machine

2: notch

3: Check Position

15: PLC for line control

16: PLC for welding machine control

Hereinafter, with reference to the accompanying drawings will be described the present invention.

3 is a block diagram of a method for automatically controlling side notches according to the present invention, and FIG. 4 is a flowchart of a method for automatically controlling side notches according to the present invention.

First, in steps 18 and 19, after welding is completed in the welder 1, the strips 9 and 10 advance and stop at the check position 3. In step 20, the operator detects the abnormality and width change of the weld at the check position 3, if there is no abnormality, proceeds to step 37 to proceed with the strip, and if the abnormality of the weld is found, proceeds to step 21 to automatically open the door. Select the mode.

In step 22, the distance a from the welder 1 to the check position 3 and the distance b from the welder 1 to the notch position are subtracted through the position control pulse generator 6. Then, the subtracted value is input to the program logic controller 15 (PLC) for line control.

In step 25, when the line control program logic controller 15 transmits the input data to the DC motor controllers 17-1 and 17-2, the controllers 17-1 and 17-2 transmit the data. The DC motors 7-1 and 7-2 are driven to backward run the strip so that the weld 11 moves to the position of the notch.

After the backward running of the strip is completed, in steps 26 to 34, the operation of the welder notch is controlled by the welder control program logic controller 16 to achieve the workside running 27 and the driveside running 31. At this time, when the strip is detected by the photosensors 8-1, 8-2, 8-3, and 8-4, the running of the work side and the running of the drive side are stopped.

In step 35, the side of the strip is cut into the same shape as the notches 12-1 and 12-2 to remove the notches formed in the weld 11. When this notch removal operation is completed, in step 36, the notch 2 is returned to return the workside and the driveside to their original positions.

Then, the strip from which the notch is removed proceeds to the next process.

The present invention provides an effect of providing an automatic side notch control method capable of quickly removing the notch by automatically reversing the notch to the side notch automatically when the strip is not removed due to the malfunction of the side notch. There is.

Claims (1)

In the automatic control method of the side notch for removing the notch when the strip advances without the notch formed on the welded end portion of the preceding strip and the trailing strip by the welding machine to reach the check position. , Providing data to a line control program logic controller by subtracting a distance from the welder to the check position from the welder; Controlling the DC motor controller to drive the DC motor to move the welding part to the notch by the provided data; When the welding portion reaches the notch, running the workside and the driveside of the notch by a welder control program logic controller, and removing the notch portion by side cutting operation of the strip according to the strip detection of the optical sensor. Side notch automatic control method characterized in that.