Vertical rolling mill with press roll device

Abstract

The invention discloses an vertical rolling mill with a press roll device. The vertical rolling mill comprises a base, a rolling mill body which is disposed on the base and comprises a rolling mill stand, vertical rolls and a drive system and the press roll device. The press roll device comprises oil cylinders, an upper crossbeam, a lower crossbeam, press rolls and a guide cylinder. The oil cylinder is disposed on the upper portion of the upper crossbeam. A piston rod of each oil cylinder penetrates the upper crossbeam to be connected with a connecting rod fixed on the upper portion of the lower crossbeam. Support plates are disposed on the lower portion of the lower crossbeam. The press rolls are disposed between every two support plates. The guide cylinder is disposed between the upper crossbeam and the lower crossbeam. By the press roll device, billet rollover caused by unavailable hole patterns of the vertical rolls during vertical rolling can be prevented effectively, multi-specification rolling can be achieved on the premise that rolls of a single rolling machine need not to be replaced, time for roll replacing is saved, production efficiency is increased, and production cost is lowered.

Description

technical field [0001] The invention relates to an vertical roller mill, in particular to an vertical roller mill with a pressure roller device. Background technique [0002] In the traditional vertical roll mill, the roll is fixed in the mill frame and can only move left and right and cannot be lifted up and down. During the rolling process, only a section of the effective working surface of the roll can be used, so that the roll can only be opened with a single pass. Each specification The passes can only be rolled to the corresponding shape, and can only be used once. If different rolling shapes are realized on the same rolling production line, the rolls must be replaced, resulting in frequent replacement of the rolls, which is not only a waste of time, but also frequently replaces the rolls Cause cost height, waste many drawbacks. How to increase the number of times the rolls are used, prolong the use time, reduce the number and time of changing the rolls, even without ...

AI Technical Summary

Problems solved by technology

However, this rolling mill only overcomes the drawbacks of traditional rolling mills that can only open a single pass and requires frequent roll replacement. It does not solve the problem of realizing different rolling shapes on the same rolling production line without changing rolls or opening holes on the rolls. type of problem

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