A floating laser transmission welding clamping device

Abstract

The invention relates to a floating type laser transmission welding clamping apparatus, which comprises a PC machine, a stepper motor control system, an X axis feeding system, a Y axis feeding system and a Z axis feeding system, and further comprises a pressure applying mechanism and pressing mechanisms, wherein a hydraulic control system adjusts a hydraulic small thimble so as to make the sum of the downward pressing force of two rollers be equal to the pre-pressing force, the bottom mold the movable pressing device in the pressing mechanism are matched to press the upper work-piece and the lower work-piece so as to achieve the clamping on the curved surface work-piece, the stepper motor control system controls laser to move along the predetermined route so as to achieve the welding on the curved surface work-piece, and with the laser transmission welding clamping apparatus of the thermoplastic plastic, the welding on the 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 through a plurality of the rollers is adopted so as to avoid stress concentration after processing, and the quality of the processed work-piece is improved.

Description

technical field [0001] The invention relates to the field of laser transmission welding, in particular to a clamping device for laser transmission welding between thermoplastics or between thermoplastics and metal materials, in particular to a floating laser transmission welding clamping device. Background technique [0002] Plastic products have the advantages of light weight, high strength, low density, low cost, excellent elasticity, and corrosion resistance. Therefore, plastics are used more and more widely, especially thermoplastics. Most thermoplastic products are molded products. Affected by 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 Combining multiple simple injection molded parts, a variety of joining methods for thermoplastics have emerged. Traditional mechanical connection ...

AI Technical Summary

Problems solved by technology

The disadvantage is that only some planar welds (that is, the surface is required to be flat) can be welded, and the welding of three-dimensional welds cannot be realized, but the application of three-dimensional weldments in practical applications is more and more

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 device that overcomes these disadvantages

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