Steel pipe end rounding machine

Abstract

The invention discloses a steel pipe end rounding machine, which comprises a body, wherein two sections of rails are symmetrically arranged on the body; a driving vehicle is arranged on the rail; rotating rollers are arranged between the two sections of rails; a steel pipe is arranged between two rotating rollers; a fixing seat is arranged on the driving vehicle; a lower adjusting cylinder is arranged on the fixing seat; a piston rod of the lower adjusting cylinder is arranged at the lower end of a die bracket; the lower part of the die bracket is provided with a lower rounding die; the upper end of the die bracket is provided with a tension cylinder; a piston rod of the tension cylinder is connected with an upper rounding die; the upper rounding die is arranged on a lifting sliding rack; and the lifting sliding rack is arranged on the die bracket. The steel pipe end rounding machine is ingenious in structure and reasonable in design, and the function of improving the ovality of the pipe end of the steel pipes of different lengths and specifications.

Description

technical field [0001] The invention belongs to the technical field of straight seam submerged arc welded pipe production line equipment, and in particular relates to a straight seam submerged arc welded pipe whose ellipse at the end of the pipe is corrected and restored to a circular shape before the chamfering machine pours out the welding groove so as to reduce the ellipticity of the end of the pipe. Tube end rounding machine. Background technique [0002] In the production line of large longitudinal submerged arc welded pipes, the ellipticity of the pipe ends of the finished steel pipes should not be too large, otherwise, it is easy to cause misalignment when two steel pipes are welded together on site. The past experience is to measure the outer diameter of each steel pipe on site, and weld two steel pipes with relatively similar outer diameters in a team, but the workload is heavy and the efficiency is low. In order to solve this problem, the method of expanding the m...

AI Technical Summary

Problems solved by technology

In the past, most of the manufacturing experience used the hydraulic jack to expand the pipe end. Manual operation is inefficient and has potential safety hazards. If more automated equipment can be manufactured, the labor intensity will be greatly reduced and the productivity will be increased. There will be a very high market. promotional value

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