Three-roller centering device for rolling mill

Abstract

The invention discloses a three-roller centering device for a rolling mill, which solves the problem that the guide device can not adapt steel pipes with different specifications. The three-roller centering device for the rolling mill comprises an upper guide roller driving cylinder (2) and a lower guide roller driving cylinder (3) which are arranged on a rack (1). An L-shaped swing arm (4), a T-shaped swing arm (6) and a reversed V-shaped swing arm (8) are hinged on the rack (1), a first adjusting pad (5) which can adjust the amplitude of swing of the L-shaped swing arm (4) is arranged between the L-shaped swing arm (4) and the rack (1), and a second adjusting pad (7) which can adjust the amplitude of swing of the T-shaped swing arm (6) is arranged between the T-shaped swing arm (6) and the rack (1). A hinged shaft (18) connected with a driving motor (20) is provided with a driving sprocket (17), and a driven sprocket (15) is arranged on a shaft (14) of one end of a lower left guide roller (10). A chain (16) is arranged between the driven sprocket (15) and the driving sprocket (17). The three-roller centering device for the rolling mill adapts the steel pipes with different specifications and reduces the operation cost of equipment.

Description

technical field [0001] The invention belongs to the field of seamless steel pipe production in the metallurgical industry, and in particular relates to a three-roller centering device for front centering and pre-rotation or backstage of a rolling mill. Background technique [0002] The production technology of the existing seamless steel pipe is diverse, and the capillary tube after perforation can be produced by different rolling processes through different rolling mills. When the steel pipe is rolled on the skew rolling mill, the steel pipe must be guided to ensure the stability of rolling and improve the precision of the steel pipe after rolling. The guide devices used on the skew rolling mill include L-shaped guide grooves, long guide roller structures, fixed guide grooves, etc. During the rolling process, the L-shaped guide groove has poor guidance to the steel pipe, poor rolling stability, inconvenient specification replacement, and a large number of replacement part...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a three-roller centering device for a rolling mill, which solves the problem that the guide device used on the existing skew rolling mill cannot adapt to various specifications of steel pipes and cannot bite into the steel pipe smoothly

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