Connecting device and connecting method of metal-and-plastic mixed thin-wall structure

Abstract

The invention discloses a connecting device of a metal-and-plastic mixed thin-wall structure. The device comprises a femtosecond laser device which can emit laser beams, a four-axis movement platform which can conduct planar motion, a fixture and a computer, wherein the fixture is arranged at the top surface of the four-axis movement platform and can apply clamping acting force to edges of a metal workpiece and / or a transparent plastic workpiece, the computer is electrically connected with the femtosecond laser device and the four-axis movement platform separately, and the femtosecond laser device emits the laser beams to make the laser beams irradiate an irradiating surface of the workpiece clamped by the fixture. The invention further provides a connecting method of utilizing the connecting device of the metal-and-plastic mixed thin-wall structure. Compared with the prior art, the technical problem of welding of hetero-incompatible materials of plastic and metal is solved, and the work reliability and work efficiency of laser connection of metal and plastic are improved.

Description

Technical field [0001] The invention relates to the technical field of laser processing, in particular to a metal and plastic mixed thin-wall structure connection device and connection method. Background technique [0002] With the emergence of new materials and new structures, materials formed by the combination of metallic materials and non-metallic materials have been greatly developed. In particular, the hybrid structure of plastic and metal has great advantages in technical fields such as medical equipment, packaging industry, auto parts, and electronic device packaging because of its light weight and high strength and other mechanical and physical properties. [0003] In the prior art, bonding, mechanical riveting, NMT technology, brazing and ultrasonic welding are mainly used when connecting plastics and metals. However, in the above-mentioned process methods, there may be poor appearance, or insufficient joint strength, or Shortcomings such as low production efficiency. H...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, bonding, mechanical riveting, NMT technology, brazing and ultrasonic welding are mainly used to connect plastics and metals. Disadvantages such as low production efficiency

Laser processing is used to connect two different types of materials, metal and plastic, because it has better advantages, so it is applied. However, in this process, because the melting points of the two types of materials are quite different, the relative The capacity is low, and it is difficult to form a compound between metal and plastic in the fusion zone; in addition, there is an oxide film on the surface of the metal material, which hinders the combination of two different types of materials, and when plastic and metal are processed and connected, air bubbles are easily generated and there are two kinds of materials Therefore, the structure formed by the connection between the two is unstable

Images