Three-dimensional laser plastic welding processing head

Abstract

The invention relates to a three-dimensional laser plastic welding processing head which belongs to the field of applications of laser technologies. In order to realize synchronization of laser output and pressure output, realize large-area three-dimensional welding and simultaneously enabling the pressure exerted during welding to be uniform, the three-dimensional laser plastic welding processing head comprises a shell, a cylindrical roller, two pipe shells, two pulleys, four springs and a cylindrical lens, wherein the pipe shells are respectively connected at the two ends of the cylindrical roller, the pulleys are respectively sheathed and embedded on the outer sides of the pipe shells, two springs are fixedly connected on each pulley, the other end of each spring is fixedly connected with the shell, and the cylindrical lens is fixedly embedded at the middle part of the shell. The cylindrical roller is adopted for outputting linear light spots, the springs are mounted on the two sides of the cylindrical roller, the pressure direction and the pressure intensity can be automatically regulated along with fluctuations of a plastic surface, the cylindrical roller is always close to the plastic surface in a precise tangent mode, and the pressure is exerted vertically, thus the high-quality plastic welding can be obtained.

Description

technical field [0001] A three-dimensional laser plastic welding processing head belongs to the application field of laser technology. It is especially suitable for large-scale three-dimensional plastic weldments that require line light spots for plastic welding, and can achieve fast welding. Background technique [0002] With the development of laser technology, laser plastic welding has been widely used in automobiles, medicine, electronics and other fields. The current laser plastic welding is characterized in that two layers of plastic must be satisfied: one layer transmits the laser beam, and the other layer absorbs the laser beam. The welding process is roughly that the laser beam is incident from the side of the transmissive plastic, hits the interface of the two layers of plastic, is absorbed by the absorbing plastic, and the surface temperature of the absorbing plastic rises to cause thermal melting, and at the same time, heat conduction occurs to the transparent p...

AI Technical Summary

Problems solved by technology

However, its light spot output is a spot light spot, which can perform contour welding well, but it is not suitable for some surface welding with a slightly larger area. It needs to scan back and forth for welding, which undoubtedly increases the cost and production cycle.

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