Rolling mill capable of rapidly replacing roller and roller replacing method thereof

Abstract

The invention discloses a rolling mill capable of rapidly replacing a roller and a roller replacing method thereof. The rolling mill comprises a frame assembly, a roller assembly and a roller replacing device, wherein an operating side frame of the frame assembly is provided with a window through which an entire roller group can be moved out; an operating side frame end cover is fixedly arranged on a shift-out trolley of the roller replacing device and is attached to the operating side frame; the operating side frame end cover or the shift-out trolley is provided with a hook; and the hook andthe roller group or the roller group trolley are fixed with each other along the direction of the shift-out trolley, and are in sliding fit with each other along the direction of a traversing guide rail. During roller replacement with the rolling replacing method disclosed by the invention, the entire operating side frame end cover and the entire roller group are moved out / in and are positioned quickly and accurately without detaching or moving the operating side frame, so that frequent repeated positioning of the frame is avoided. Compared with the prior art, the rolling mill has the advantages that: the equipment running stability is enhanced, the production and manufacturing requirements on the rolling mill are lowered, the equipment maintainability is enhanced, the dimensional accuracy of a rolled product is more stable, the roller replacing time is shorter, and the production efficiency is higher.

Description

technical field [0001] The invention relates to the field of section steel production equipment, in particular to a rolling mill and a roll changing method for the rolling mill. Background technique [0002] At present, the production of section steel generally adopts the universal rolling method, among which the universal rolling mill is the most important equipment for the production of section steel. During the rolling process of the universal rolling mill, the rolls wear out quickly, and the roll group needs to be replaced frequently. Therefore, the roll changing operation The length of time determines the production efficiency of the universal rolling mill to a large extent. [0003] The universal rolling mill mainly includes rolls and stands, in which the rolls are composed of a pair of horizontal rolls and a pair of vertical rolls. Its characteristic is that the axes of the rolls are in the same vertical plane, and each roll can slide in the stand to move the workpie...

AI Technical Summary

Problems solved by technology

[0004] In the practical application of the above-mentioned roll changing method, it is necessary to disassemble or move the frame to achieve the purpose of loading or taking out the roll, such as a rolling mill disclosed in the patent "CN201140198Y", when changing the roll, it is necessary to move and operate the side frame, so , adopting the above-mentioned method of changing rolls will inevitably lead to high repeated positioning accuracy of the frame, and the manufacturing and installation of the frame are extremely demanding, thereby increasing the time of changing rolls and the cost of manufacturing. In addition, the mobile frame is often disassembled, making the equipment Poor stability and low maintainability, these factors will seriously affect the precision and production efficiency of rolled products

[0005] Therefore, it is necessary to explore a rolling mill and a roll changing method of the rolling mill, which can realize rapid roll changing without dismantling or moving the rack, so as to avoid poor equipment stability and low maintainability caused by frequent dismantling and moving of the rack, and at the same time reduce the roll changing time , reduce the manufacturing cost of the rolling mill

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