Laser transmission welding clamping system for automobile lamp and method of laser transmission welding clamping system

Abstract

The invention provides a laser transmission welding clamping system for an automobile lamp and a method of the laser transmission welding clamping system. The laser transmission welding clamping system comprises a laser emitting system, a control system and a clamping system. The laser emitting system comprises a laser emitter, a laser controller and a mechanical arm. The control system comprises a laser controller, a computer and an air pressure control system. The clamping system comprises an upper die, a base, clamping heads, a connection rod, a high-speed air cylinder, an air exhaust through hole, a vacuum generator, an automobile lamp shade and an automobile lamp body. According to the laser transmission welding clamping system for the automobile lamp, laser serves as energy, clamping devices which are evenly distributed provide uniform clamping force, the clamping force can be adjusted through the clamping system and the control system, the clamping actions of the clamping heads can be controlled, and therefore laser transmission welding of the automobile lamp is achieved, and the welding efficiency and the welding quality of the automobile lamp are improved.

Description

technical field [0001] The invention belongs to the field of laser processing and manufacturing and laser transmission welding of polymers, in particular to a clamping system and method for laser transmission welding of lamp bodies and lampshades of automobile lamps. Background technique [0002] In recent years, with the increasingly prominent problems of energy shortage and environmental pollution, governments and automobile manufacturers have higher and higher requirements for energy conservation and environmental protection of automobiles. The realization of automobile lightweight has become the current development trend of the world automobile industry. Thermoplastic polymers and their composite materials have the advantages of light weight of finished products, excellent physical properties, low cost, energy saving and shock resistance, etc., and are an important way to realize the lightweight of automobiles. Using thermoplastic parts to replace metal parts can meet the...

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Problems solved by technology

[0004] However, in practical applications, since the shape of the car lamp is relatively complicated, and its welding position is located at the outermost periphery of the lamp, it is necessary to ensure the clamping of the lamp body and the lampshade during the welding process of the lamp, and to ensure that the welding During the process, the fixture will not block the laser irradiation to the position to be welded, which brings a problem to the laser transmission welding clamping device of the car lamp. Solving this problem will undoubtedly promote the wide application of laser transmission welding in the automotive lamp

[0005] The Globo welding device invented by Leister is ingenious. Its welding head has a glass ball. This glass ball can not only focus the laser beam, but also exert a pressing force. Its main advantage is that it can realize welding of any three-dimensional weld seam. But what it adopts is a single point contact, which easily leads to stress concentration after welding. In addition, the long-term rolling friction of the glass ball will easily cause the surface of the glass ball to wear and make the optical performance of the glass ball worse. Therefore, there is an urgent need for a method that can overcome the above shortcomings. device

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