Flying shear control system based on position ring

Abstract

The invention discloses a flying shear control system based on a position ring. The flying shear control system comprises a proximity switch and a photoelectric pulse coder, which are electrically connected to a direct-current speed regulating device used for controlling a flying shear; the direct-current speed regulating device controls a flying shear drive motor to realize driving of the flying shear; and the proximity switch, the photoelectric pulse coder and the direct-current speed regulating device are connected through a logic or gate module. According to the technical scheme, the flying shear control system based on the position ring controls the flying shear drive motor through a trigger signal generated by the photoelectric pulse coder under a specific pulse number, so that dual-signal trigger control based on the proximity switch and the photoelectric pulse coder is formed in the control process of the flying shear through the trigger signal of the photoelectric pulse coder and the logic or gate module, and continuous operation of the flying shear still can be ensured under the condition that the proximity switch is damaged, and thus, stability of flying shear work is remarkably improved.

Description

technical field [0001] The invention relates to the field of steel rolling processing, in particular to a position loop-based flying shear control system. Background technique [0002] In the production process of the rolling mill, in order to remove the deformed head and tail of the continuous rolling steel bar, and to realize the double-length function in the bar production, it is necessary to set up a flying shear device to perform cutting operations such as head, tail, double-length, and broken sections. Flying shears are usually Driven by a DC motor. The shearing process involves start-up acceleration, constant-speed shearing, and deceleration return. After the rolled piece leaves the scissors, the proximity switch detects the position of the knife arm and triggers the deceleration control. At the same time, the pulse number of the speed measuring encoder is cleared to make the knife arm Return to the initial position and wait for the next cut. However, the proximity ...

AI Technical Summary

Problems solved by technology

However, the proximity switch is prone to failures such as damage and detection failure during use, resulting in the failure of the flying shears to complete the cutting function normally.

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