Laser welding head and welding equipment

Abstract

The invention discloses a laser welding head and welding equipment provided with the laser welding head. The laser welding head comprises a laser source, a rear powerful laser output head, a front weak laser output assembly which is relatively fixed to the front side of the rear powerful laser output head, and a light guide device, wherein the front weak laser output assembly can output laser withstrength lower than that of the rear powerful laser output head; and the light guide device is used for guiding output light of the laser source to the front weak laser output assembly and the rear powerful laser output head. In a welding process, laser output by the front weak laser output assembly firstly heat films at the two sides of a welding seam, and the films are removed after being heated; and then, laser output by the rear powerful laser output head heats and welds the welding seam. According to the laser welding head disclosed by the invention, film removing and welding are integrated, so that automatic film removal is simultaneously performed at the front side of a welding spot, and therefore, an existing manual film tearing way is avoided, and labor cost is reduced.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a laser welding head and welding equipment. Background technique [0002] Laminated stainless steel refers to stainless steel with a thin film on the surface, which plays a role in protecting the surface of stainless steel during transportation. Laminated stainless steel is the main production material in the home appliance and kitchen utensils industries. When welding stainless steel, the film on the surface of the stainless steel will greatly reduce the welding quality. During welding, the coating near the gap between the two plates will flow to the molten pool, which will interfere with the liquid phase flow of the molten pool and easily cause holes, pores or splashes , and even serious defects such as undercut. Therefore, the film on the surface of the stainless steel needs to be removed before welding, but the current method of manually tearing the film by hand has high la...

AI Technical Summary

Problems solved by technology

When welding stainless steel, the film on the surface of the stainless steel will greatly reduce the welding quality. During welding, the coating near the gap between the two plates will flow to the molten pool, which will interfere with the liquid phase flow of the molten pool and easily cause holes, pores or splashes , and even serious defects such as undercut

Therefore, it is necessary to remove the film on the surface of the stainless steel before welding, but the current method of manually tearing the film by hand has high labor costs

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