Efficient polishing-free automatic pipe making machine and pipe making method

Abstract

The invention discloses an efficient polishing-free automatic pipe making machine and a pipe making method. The pipe making machine comprises a steel belt unwinding device, a steel belt flattening device, a steel belt edge folding device, a steel belt folding device, a folding and welding device, a steel pipe shaping device and a shaping sizing device which are arranged in sequence. The steel beltedge folding device presses the edges of two sides of a flattened steel belt into right-angled secondary bent edges, the steel belt folding device presses the steel belt to enable two side edges of the steel belt to be gradually bent upward and then folded, and the edges of two sides of the steel belt of the folding and welding device are welded to form a steel pipe. According to a pipe manufacturing process, the two edges of the steel belt are gradually pressed into the groove shape, then the steel belt is folded, the edges on two sides are located in the groove body after being folded, andduring use, a weld joint can be shielded in the groove, so that the using appearance is not affected. Therefore, it is not needed to polish the weld joint, and the production efficiency can be greatlyimproved and the problems caused by weld joint grinding are solved. The surface of a tubular product is free of weld joints and polishing traces, the surface state can be smooth easily, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of special-shaped pipe production and processing, in particular to a high-efficiency grinding-free automatic pipe making machine and a pipe making method. Background technique [0002] When making traditional stainless steel grooved pipes, it is generally used to make grooves in the center of the steel strip first, then curl the steel strips, and make grooved steel pipes after welding. The weld seam of this kind of pipe is on the outer surface of the pipe body , the weld seam is uneven and the color is different from the original steel, so the weld seam must be ground off and then polished. However, the pipe welding process is accompanied by many uncertain factors. The weld seam is uneven, and some places cannot be polished during grinding. Therefore, there are obvious unevenness and obvious grinding marks in some parts, which greatly affect the quality of the product. Therefore, it is necessary to carry out two sand...

AI Technical Summary

Problems solved by technology

However, the pipe welding process is accompanied by many uncertain factors. The weld seam is uneven, and some places cannot be polished during grinding. Therefore, there are obvious unevenness and obvious grinding marks in some parts, which greatly affect the quality of the product. Therefore, it is necessary to carry out two sanding

However, the secondary grinding can only remove the redundant and scratched parts on the surface, and cannot repair the uneven surface of the pipe. Therefore, the quality of the grooved pipe produced by the traditional pipe making machine is not high, and the production efficiency is low.

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