Longitudinal-seam laser welding positioning device for thin-wall circular tube

Abstract

The invention provides a longitudinal seam laser welding positioning device for a thin-wall circular tube, comprising a support core shaft assembly of a molding sheet, an axial positioning mechanism, an opposite-seam positioning mechanism and an abutted-seam pressing mechanism, wherein the abutted-seam pressing mechanism comprises a lower supporting plate positioned below the support core shaft and a driving mechanism thereof as well as a left claw, a right claw and a driving mechanism, wherein the left claw and the right claw are arranged at the left side and the right side of the support core shaft; the opposite-seam positioning mechanism comprises an axial opposite-seam slot arranged on the support core shaft; the axial positioning mechanism comprises a positioning block at one end of the support core shaft and a stop block at the other end of the support core shaft, wherein the stop block is driven by using a screw rod; the driving mechanism of the lower support plate comprises a driving cylinder, a lower support plate sliding seat, a driving cylinder and vertical guide rails positioned at the front and the back of the driving cylinder, wherein the output end of the driving cylinder is connected to the lower part of a lower beam of the lower support plate sliding seat, and sliding seat guide sleeves are arranged at the front and the back of the lower support plate sliding seat and play a leading role by matching with the two vertical guide rails; the lower support plate is arranged on an upper beam of the lower support plate sliding seat; and the left claw is driven by using a screw rod, and the right claw is driven by adopting an abutted-seam cylinder.

Description

technical field [0001] The invention relates to a laser welding positioning device for the longitudinal seam of a thin-walled circular pipe. The welding positioning device is a supporting device of a numerical control laser welding machine, and belongs to the technical field of mold fixtures. Background technique [0002] Laser welding is one of the important aspects of the application of laser processing material processing technology. Due to its advantages of narrow weld seam, deep penetration, parallel sides of the weld seam, small heat-affected zone, and small welding deformation, it is widely used in machinery manufacturing, aerospace , automotive industry, powder metallurgy, biomedical microelectronics industry and other fields. The principle of laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction between the laser and the metal, the metal absorbs the laser and converts it into heat energy, which melts the metal and then...

AI Technical Summary

Problems solved by technology

[0004] The existing positioning device for longitudinal seam welding of thin-walled circular pipes cannot meet the process requirements of laser welding in terms of positioning accuracy and reliability

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