Device for tracing and detecting interior plate blank head position of fixed width machine

Abstract

The invention provides a device for tracing and detecting an interior plate blank head position of a fixed width machine. The device for tracing and detecting the interior the plate blank head position of the fixed width machine comprises a fixed width machine control PLC and a fixed width machine first-level control system connected with the fixed width machine control PLC; the input end of the fixed width machine control PLC is connected with a main transmission motor current signal, a pressing die size, and an inlet pinch roller pressure signal. The fixed width machine control PLC comprises a filtering module, a counting module, a plate blank head position calculating module and a communication module; filter shaping is conducted on the main transmission motor signal by the filtering module; the number of impulses of the main transmission motor current signal is accumulated by the counting module; the plate blank head position is calculated by the plate blank head position counting module, and the calculation formula is a plate blank head position value=28.96m+the number of the impulses of the main transmission motor current signal*the pressing die size; the plate blank head position value is transmitted to the fixed width machine first-level control system in real time by the communication module; the filtering module judges monitored currents, and the impulses are effective when the currents are larger than or equal to 4000A every time.

Description

technical field [0001] The invention relates to a device for tracking and detecting the position of a slab head inside a slab head, which belongs to the field of electrical basic automation control and is directly applied to the control of a hot-rolling sizing press (hereinafter referred to as a sizing machine). Background technique [0002] The sizing machine on the hot rolling line is located after the roughing descaling machine and before the other rolling mills, and is used for continuous width lateral pressure on the entire length of the slab. Therefore, the tracking position of the slab on the sizing machine must be accurate. If the position tracking of the head of the slab is inaccurate, it will affect the control of the roll gap control of the side pressure of the sizing machine, the roll gap control of the guide roller and the pinch roller. It directly leads to the decline of the control accuracy of the exit slab width, and in serious cases, the pinch roller and gu...

AI Technical Summary

Problems solved by technology

However, when the diameter of the pinch roller is abnormally worn, or the shape of the slab is not good and slips, the position value of the head of the slab calculated by this method is far greater than the actual position of the head of the slab, resulting in abnormal production

Images