Laser transmission welding clamping apparatus capable of achieving any curved surface welding

Abstract

The invention relates to a laser transmission welding clamping apparatus used between thermoplastic plastics or between a thermoplastic plastic and a metal material and capable of achieving any curved surface welding. The laser transmission welding clamping apparatus comprises a PC machine, a PLC controller, a hydraulic system, a pressure sensor and a light source control system, and further comprises a pressure applying system, a pressing component and a periphery fixation member, wherein the pressure applying system applies uniform pressing force on the surface of the two-dimensional pressing component, the pressing component transmits the pressing force to the upper work-piece and the lower work-piece and the pressing force is uniformly distributed so as to achieve the clamping on the complex work-piece, and laser performs the welding on the work-piece under the control of the PC machine. According to the present invention, with the laser transmission welding clamping apparatus of the thermoplastic plastic, the welding on the any curved surface work-piece can be achieved, the welding path and the pressing force can be precisely controlled, the whole strength and the stiffness of the welded member can be increased, the pressing of the upper mold and the lower mold is adopted, the pressing force is uniformly distributed on the surface, the stress concentration after processing is voided, and the quality of the processed work-piece is improved.

Description

technical field [0001] The invention relates to a laser welding technology, in particular to a laser transmission welding clamping device between thermoplastics or between thermoplastics and metal materials, in particular to a laser transmission welding clamping device capable of welding any curved surface. Background technique [0002] Plastic products have the advantages of light weight, high strength, low density, low cost, excellent elasticity, and corrosion resistance. Because of these advantages, plastic products are used more and more, and thermoplastics are more widely used. However, affected by many aspects such as injection molding, extrusion processing technology and mold making, many plastic products with irregular shapes or complex structures are difficult to be injection molded at one time. Usually, the most economical and effective method is to combine multiple simple injection molded parts. Together, therefore, a wide variety of joining methods for thermoplas...

AI Technical Summary

Problems solved by technology

Patent "Laser Transmission Welding Follow-up Clamping Device", application number: 201210462627.X, although this device can realize three-dimensional weld welding, but the clamping force is uneven. According to relevant research, during the welding process, the pressing force The size and uniformity have a great influence on the quality of the weldment

Secondly, the Globo welding device invented by Leister is quite 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 any three-dimensional welding seam. Welding, and the structure is compact, but it uses a single point of contact, which is likely to lead 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 A kind of device that can overcome above shortcoming

Images