Coiled pipe forming roller assembly

Abstract

The present invention relates to a wrapping pipe welder in particular to a coiled pipe forming roller battery; the invention consists of multilevel a plurality of pairs of upper and lower shaping rollers installed on upper and lower roller output shafts of the wrapping pipe welder. The material input end is the primary level and the output end is the last level; all rollers are arranged according to this sequence and kept on the same central line; the cavity of every pair of upper and lower shaping rollers is reduced and limited level by level and the cavity of the rollers at the last level reaches the set size. In the process that the belting is shaped into a semi-circle one and reduced into a vertical seam-type coiled pipe by being reduced and limited level by level, the cavity of every pair of shaping rollers makes the belting form a smooth arc without hard angle for transition and the phenomenon of local stress concentration will not happen; and then the belting is wrapped on the wrapping pipe welder by an aluminum core rod to be welded; the welding line is stable without oscillation and the welding quality is high with little welding error.

Description

technical field [0001] The invention relates to a clad welded pipe machine, in particular to a rolling tube forming roller set, which is the first choice key supporting component on the clad welded pipe machine. Background technique [0002] At present, all manufacturers of copper-clad aluminum wire products in China usually have the same problem in the cladding welding pipe machine used for continuous welding after the copper strip is clad on the aluminum rod, that is, the accumulation error is formed when the coiled tube is clad and welded. Its main performance is that the weld seam is unstable and swings from side to side. Trace it to its cause except the factor of the manufacturing precision of equipment, the precision of the sub-shape of coiling tube roller just becomes the main factor. Because the geometric shape of the tape during the rolling process is changing at any time, resulting in an increase in the stress points on the circumferential surface of the tube. Whe...

AI Technical Summary

Problems solved by technology

Because the geometric shape of the tape during the rolling process is changing at any time, resulting in an increase in the stress points on the circumferential surface of the tube. When welding the open pipe seam, as the temperature of the welding part increases, The existing stress will be released as the temperature rises. Due to the release of stress, the weld seam will be unstable and swing left and right, which will affect the welding quality.

Images