Device for controlling automatic centering of cold-rolling strip steel uncoiler

Abstract

The invention discloses a device for controlling automatic centering of a cold-rolling strip steel uncoiler. The device comprises 1, three infrared photoelectric sensors for detecting strip steel deviation and strip steel uncoiling threading, 2, two electromagnetic induction switches for detecting an uncoiler displacement signal, 3, a limit switch for detecting a displacement limit of a width arrangement block, and 4, a tachogenerator for detecting a rate signal of an uncoiler driving motor, feeding back the rate signal into a proportional amplifier and providing detection signals to a control loop composed of a press-button, six relays and a programmable controller. Through the detection signals, the relays are controlled respectively to act so that a width arrangement motor and a proportional reversing valve are controlled to act according to demands. The proportional amplifier provides signals to the proportional reversing valve and the proportional reversing valve drives a hydraulic cylinder so that an uncoiler moves transversely. The width arrangement motor drives a screw rod so that strip steel width arrangement is realized. The device realizes automatic centering of an uncoiler base, strip steel uncoiling threading detection, automatic edge-search width-arrangement of strip steel, and deflection correction of strip steel, can effectively reduce spare parts and a maintenance cost, and can guarantee normal operation of a cold-rolling unit.

Description

technical field [0001] The invention relates to an automatic centering control device for a cold-rolled strip uncoiler. Background technique [0002] Under the control of the centering device (CPC), the uncoiler of the cold rolling mill can move laterally between the transmission side and the operation side of the conventional process. Under the control of the centering device, the strip steel is kept at the center of the rolling mill production line. [0003] The drive motor drives the tensioning shaft of the uncoiler through the gearbox to realize the uncoiling of the steel coil. After the coil is uncoiled, the steel strip moves forward in the C-shaped frame. A screw rod with opposite threads is installed on the C-shaped frame. The two ends of the screw rod are respectively equipped with The fixed width block, the screw is driven by the fixed width motor, and the width of the strip on the C-frame is realized through the fixed width block according to the width of the strip...

AI Technical Summary

Problems solved by technology

After the probe head is damaged, due to the high price and generally no inventory (a pair of probes is about 60,000 yuan, and a set of mold control device is about 70,000 yuan), the spare parts order cycle takes 4 months. The probe is damaged and there are no spare parts. The system cannot work, which seriously affects the normal operation of the cold rolling mill and reduces production efficiency

Images