Gas protection device for welded joint formed by laser flexible welding

Abstract

The invention provides a gas protection device for a welded joint formed by laser flexible welding. Two fixing bolts are mounted on a welding head; a protection gas nozzle is connected to a height adjustment plate; a sliding chute is formed in the height adjustment plate, so that the height adjustment plate can be used for adjusting the height of the protection gas nozzle and a transverse distance between the protection gas nozzle and the welding head; a fixed angle is formed at the lower end of the height adjustment plate; the gas nozzle is always in an optimal protection gas lateral blowing angle; the section of a protection gas spraying opening is an elliptical section. By the chute in the height adjustment plate, nuts on the fixing bolts and the fixed angle at the lower end of the height adjustment plate, the upper and lower distance and the left and right distance of the protection gas nozzle can be adjusted, and the angle of the protection gas nozzle can be fixed; therefore, the welded joint can be always well protected by protection gas, a welding defect, caused by poor protection, of the welded joint is avoided, and the welding quality is guaranteed.

Description

Technical field [0001] The invention relates to a gas protection device during laser welding, in particular to a gas protection device for welding seams during laser flexible welding. It belongs to the field of laser welding technology. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy density laser beam as a source for welding. Because of its advantages such as high energy density, deep penetration, high precision, and strong adaptability, it has been valued by developed countries. Laser welding plays a very important role in the welding of some special materials and structures. This welding method is more and more widely used in high-tech fields such as aerospace, electronics, automobile manufacturing, and nuclear power. [0003] Welding robots are advanced welding equipment developed on the basis of industrial robots and are robot production units specialized in welding. Since the welding robot has many advantages s...

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Problems solved by technology

[0007] Aiming at the problem that the welding seam protection effect of the laser flexible welding system is uneven during welding, this invention proposes a laser flexible welding seam gas protection device, which aims to realize all-round gas protection for the complex space curve weld seam, avoid The tendency of welding defects due to poor protection during the welding process, resulting in good weld quality

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