JPS55141309A - Controller for rolling mill - Google Patents

Abstract

PURPOSE: To surely send out the thickness data to the controller, by meorizing the thickness for every unit length, by removing the cutting length of the tip, etc., from the memory data, and by installing the device for synchronizing this thickness value with the finishing mills' interstand tension control.

CONSTITUTION: The thickness for every unit length is operated by the delivery side thickness arithmetic unit 17 depending on signals, etc., sent from the roll gap detector 12 and the load cell 14 of the roughing mill 10; the result of operation is memorized by the first memory unit 19. When the sheet length as far as the cutting point is operated by the cutting length arithmetic unit 34, the data of n-pieces as far as this cutting point are removed from the data of the first memory unit 19 in the second memory unit 35. When the cutting of the crop is finished and the sheet is bitten into the first finishing mill 70, the pulse generator 61 produces the pulse signal. Synchronizing with this pulse signal, the thickness value memorized in the second memory unit 35 is transmitted as the data for the finishing mills' interstand tensin controller 82, etc., and thereby, the roll driver 13 is controlled.

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