A method of welding stainless steel light unit without cutting strips and corresponding tooling structure

Abstract

The invention provides a method for welding stainless steel optical units without cutting steel belt, and has the advantages of overcoming the defects at the butting parts, satisfying the requirements of laser welding and directly welding without cutting steel belts so as to reduce the production cost. The method comprises the following steps: shielding the border positions on two sides of two steel belts needing opposite side connection; welding the exposed opposite side connection positions through welding equipment to complete the opposite side connection of the two steel belts; placing the integrated steel belt on two steel belt placing frames; forming stainless steel pipes through a longitudinal tubing die after the two steel belt placing frames discharge the steel belts at the same time; welding the shielded border positions on the two sides of the steel belts by a laser continuous welding device in the process of forming the stainless steel pipes in the longitudinal tubing die.

Description

technical field [0001] The present invention relates to the technical field of optical communication, and specifically relates to a method for welding stainless steel optical units without cutting strips. The invention also provides a tooling structure corresponding to the method for welding stainless steel optical units without cutting strips. Background technique [0002] Most domestic companies currently use laser welding technology for optical fiber composite overhead ground wires (OPGW for short) and optical fiber composite overhead phase wires (OPPC for short). The steel strip with a certain width is cut into the steel strip with the corresponding width of the forming die owned by the company, and some waste edges are subtracted, so that some steel strips are wasted in the production of sleeves. Usually, the company uses more than one set of forming molds, such as φ5.0, φ4.6, φ3.5 and other specifications of forming molds. Different forming molds require different widt...

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the table that as the size of the forming die increases, the utilization rate of the steel strip increases. However, due to the limitation of the elongation of the steel strip and the diameter of the light unit, the use of large-size forming dies is bound to be limited. The utilization rate is low, so that the production cost is high; and in the existing method, the cost of the cutting knife also further increases the production cost due to the need for the steel strip to be cut.

To sum up, the original method of trimming the opposite sides of the steel strips and then performing longitudinal cladding welding has high production costs.

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