Rolling device for diamond-shaped steel tube

Abstract

The invention discloses a rolling device for a diamond-shaped steel tube. The rolling device comprises a horizontal rack and a vertical rack; the horizontal rack comprises a base, a left support plate and a right support plate; a cross roc glidingly matched with the upper ends of the roll shafts of a left roll and a right roll is arranged on the left support plate and the right support plate; the base is also provided with a first blowpipe for blowing the left roll and the right roll; the cross rod is provided with a second blowpipe and a third blowpipe, wherein the second blowpipe is used for blowing a top roll, and the third blowpipe is used for blowing the diamond-shaped steel tube. According to the rolling device disclosed by the invention, blowing is performed on the left roll, the right roll, the top roll, a bottom roll and the steel tube respectively by the blowpipes, so that gravel and the like can be avoided remaining on the rolls and the steel tube, and the phenomenon that impurities enter junction surfaces of the rolls and the steel tube to cause the rolling defect can be avoided; moreover, the upper ends of the roll shafts of the left roll and the right roll are supported by the left support plate, the right support plate and the cross rod, and thus, the mechanical properties of the rolls can be greatly improved, the problems of vibration, deflection and looseness during the long-term use of the left roll and the right roll are avoided, and the rolling quality can be effectively improved.

Description

technical field [0001] The invention relates to rolling equipment, in particular to a rolling mill for rolling rectangular steel pipes. Background technique [0002] The diamond-shaped steel pipe rolling device includes a left roll, a right roll, a horizontal rack for installing the left and right rolls, an upper roll, a lower roll, and a vertical rack for installing the upper and lower rolls, and the horizontal rack and the vertical rack for rolling The lines are arranged one after the other independently of the other. [0003] In the prior art, the rolls are not equipped with cleaning devices during the rolling process, so that during the rolling overshoot, it is easy for sundries such as gravel to enter the joint surface between the rolls and the steel pipe, resulting in rolling defects. [0004] And because the left and right rolls are vertically arranged on the horizontal frame, the left and right rolls will be subjected to the horizontal impact force of the steel pipe...

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a diamond-shaped steel pipe rolling device to solve the problem of rolling defects caused by gravel entering the joint surface between the roll and the steel pipe, and the left and right rolls on the horizontal frame have poor resistance to horizontal impact and are prone to deviation. Slant and loose problems

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