A positioning control method for roll changing push-pull cart in cold rolling mill

Abstract

The invention provides a cold-rolling mill roll-changing push-and-pull cart positioning control method which comprises three parts namely setting the parameter of a position detection encoder, positioning, judging and controlling the position of a roll-changing push-and-pull cart, and outputting the speed setting of the roll-changing push-and-pull cart. A position positioning, judging and settingfunctional block is adopted to output the current position state and the position setting value of the roll-changing push-and-pull cart; and a position positioning controlling functional block positions and controls the position of the roll-changing push-and-pull cart according to the position setting value. After the cold-rolling mill roll-changing push-and-pull cart positioning control method isapplied in the automatic roll-changing process of a cold continuous rolling production line, precise control over the migration distance of the roll-changing push-and-pull cart is realized, and occurance of the migration failure of the roll-changing push-and-pull cart is reduced, so that the roll-changing time is shortened, the working performance and the equipment operation rate are improved andincreased, and the requirements of the manufacturing technique are met.

Description

technical field [0001] The invention belongs to the technical field of roll changing process automation of a cold continuous rolling production line, and in particular relates to a positioning control method for a roll changing push-pull car in the cold continuous rolling production process. Background technique [0002] The rolling speed of modern high-speed cold rolling mills is increasing, which greatly accelerates the wear of the rolls, making the replacement times of the rolls more and more frequent. The working rolls of the cold rolling mills are replaced at least once per shift, so the time for changing rolls is shortened. It is crucial to ensure product quality, reduce downtime, increase mill availability, increase production and reduce costs. It can be said that the rapid replacement of rolls has great economic significance for cold rolling mill operations. [0003] In order to meet the requirements of the production process and ensure that the surface and thicknes...

AI Technical Summary

Problems solved by technology

Especially during automatic roll change, once the positioning control is inaccurate, so that the roll change push-pull cart does not move in place, the automatic roll change will be interrupted, requiring manual operation by the operator, which not only prolongs the roll change time, but also reduces production efficiency. At the same time, it also increases the unsafe factors of production

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