Ball type laser transmission welding clamping device

Abstract

A ball-type laser transmission welding clamping device, which includes a PC, a stepping motor control system, X, Y, and Z-axis feed mechanisms, and also includes: a pressure applying mechanism, a connecting mechanism and a pressing mechanism; the hydraulic control system adjusts The hydraulic small thimble makes the downward pressing force of the four pressure rods equal to the pre-pressing force, and the connecting mechanism transmits this pressing force to the clamping mechanism, and finally makes the downward pressing force of the pressing block equal to the pre-pressing force ;The bottom die and the upper clamping device in the clamping mechanism cooperate to clamp the upper workpiece and the lower workpiece to realize the clamping of the curved surface workpiece; the stepping motor control system controls the laser to move along the predetermined route to realize the clamping of the curved surface workpiece Welding; the thermoplastic laser transmission welding clamping device can realize the welding of curved surface workpieces, and can precisely control the welding path and pressing force, improve the overall strength and rigidity of the welded parts, and use multiple balls to press to avoid single point Contact, improve the quality of the processed workpiece.

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 ball-type 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 can overcome this disadvantage

Images