Pipe bender and forming method for manufacturing round pipe by using pipe bender

Abstract

The invention relates to a pipe bender and a forming method for manufacturing a round pipe by using the pipe bender. The pipe bender comprises a stander, and a pipe conveying mechanism and a pipe bending mechanism which are arranged on the stander, wherein the pipe conveying mechanism comprises a conveying mechanism and a pipe discharging mechanism arranged between the conveying mechanism and the pipe bending mechanism; the pipe discharging mechanism comprises a shaft vertically arranged on the stander; a roller capable of moving up and down along the shaft is sleeved on the shaft; an annular concave surface matched with a pipe blank is formed on the roller; the pipe bending mechanism comprises a rotary cylinder; the outer circle of the cylinder is processed into a spiral slot corresponding to the pipe blank; a clamp for fixing the end of the pipe blank is arranged at the lower end of the pipe bending mechanism; and the moving speed of the roller on the shaft is equal to the rotating speed of the cylinder. According to the spiral motion of the pipe bending mechanism, the pipe bender can form a plurality of round pipes at one time, so that the production efficiency is improved greatly.

Description

technical field [0001] The invention relates to a pipe bending machine and a forming method for making circular pipes by using the pipe bending machine, specifically, it is applied to forming circular pipes such as pressure equalizing rings from straight pipes. Background technique [0002] In many occasions, it is necessary to use large-diameter pipe circles, such as anti-halo rings on power lines. Traditional anti-halation rings are generally welded by multiple arc circles, which makes the overall dimensional accuracy poor and affects the anti-halation effect. In addition, this anti-halation ring is complicated to manufacture and requires multiple welds. [0003] For this reason, the patent application number 2009100284318 provides a 360 ° pipe bender, which bends the pipe end when the straight pipe is fed, so that the straight pipe is plastically deformed according to the set center and radius. In order to bend the pipe into a complete 360°, the pinch roller group, guid...

AI Technical Summary

Problems solved by technology

[0004] The 360° pipe bending machine provided by the above patent application can only form one round tube at a time. After the round tube is formed, the tube must be broken before the next round tube can be formed. The processing lacks continuity and the production efficiency is low, so it cannot meet the needs of large-scale production. The production demand needs to be further improved

Images