Welding method and welding device for complex curved vehicle lamp

Abstract

The invention relates to a welding method and a welding device of a complex curved surface vehicle lamp. The welding method comprises the following steps that according to the material of the vehicle lamp to be welded and the curvature of a curved surface of the vehicle lamp, welding parameters of the complex curved surface vehicle lamp to be welded are set in a laser generator; a lamp body to be welded and a light-distributing lens are driven by an air cylinder to be in contact with a transparent pressing film; the transparent pressing film tightly compresses the lamp body and the transparent pressing film, wherein the transparent pressing film and the light-distributing lens are consistent in shape; the laser generator is started, and the laser generator generates laser beams with different powers according to the set welding parameters, the material of the complex curved surface vehicle lamp and the curvatures of different curved surface positions of the vehicle lamp to be welded; after the laser beams are subject to light condensation through the transparent pressing film, welding along a welding part is performed according to set welding speed. The welding method is very low in energy consumption, environment pollution is not caused, and the problems that the current welding method of the complex curved surface vehicle lamp is relatively high in energy consumption and poor in welding quality and causes environment pollution are solved.

Description

technical field [0001] The invention relates to the technical field of automobile lamps, in particular to a welding method and a welding device for welding complex curved surface lamps by laser. Background technique [0002] At present, friction welding and hot plate welding are generally used for the welding of car lights. During friction welding, the rotating workpiece starts to rotate at a high speed driven by the motor, and the moving workpiece gradually moves closer to the rotating workpiece under the action of axial force. After the workpieces on both sides are contacted and pressed tightly, some asperities on the friction interface first bond and shear, and generate frictional heat. As the actual contact area increases, the friction torque rises rapidly, and the temperature at the friction interface rises accordingly, and the friction interface is gradually covered by a layer of high-temperature viscoplastic material. At this time, the relative movement of the workp...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a welding method for complex curved surface lamps. The welding method uses laser welding to realize the welding of complex curved surface lamps. The energy consumption is very low and there is no environmental pollution. It is used to solve the problem of existing complex curved surface lamps. The welding method has high energy consumption, poor welding quality and environmental pollution.

Images