A laser switching module and 3D printing equipment

Abstract

The invention discloses a laser switching module and 3D printing equipment, which include an outer cylinder and a switching assembly arranged in the outer cylinder. The switching assembly can rotate in the cylinder cavity of the outer cylinder. There are reflective elements, one of which is arranged on the rotating shaft, the light entrance hole faces one of the reflective elements, and the other reflective element faces the light exit hole, and the light exit hole is arranged coaxially with the rotating shaft. When in use, two laser generators are arranged at intervals on the right side of the light entrance hole. By rotating the switch assembly, the light entrance holes are respectively directed to different laser generators. Through the reflection of the reflective element, the light in the light exit hole can be irradiated. Different laser beams are emitted, so as to realize the switching of the laser emitted from the light exit hole.

Description

technical field [0001] The invention relates to laser printing equipment, in particular to a laser switching module and 3D printing equipment. Background technique [0002] Laser selective melting 3D printing technology uses high-energy-density lasers as heat sources, based on the principle of layer-by-layer accumulation of discrete materials, and based on the product's 3D CAD model, using high-energy-density laser beams to melt metal powder or wire point by point, line by line, and layer by layer In order to accumulate, the single-layer spherical metal powder is melted and solidified quickly by laser irradiation, and then the formed area is covered with metal powder, and this process is repeated to finally form a metal workpiece. [0003] If the laser element works for a long time, it is prone to overheating, resulting in a decrease in the life of the laser generator. The workpieces that need to be printed often require high precision in some positions, while low precision...

AI Technical Summary

Problems solved by technology

[0003] If the laser element works for a long time, it is prone to overheating, resulting in a decrease in the life of the laser generator

The workpieces that need to be printed often require high precision in some positions, while low precision is required in some positions, and the existing laser printing equipment can only be equipped with a laser generator, resulting in relatively fixed printing accuracy and printing speed of the existing laser printing equipment of

Even if two or more laser generators are set up, it is impossible for multiple laser generators to process the workpiece. The range of process adjustment is very narrow, because the accuracy of laser printing is very high, whether it is moving the laser generator Or move the workpiece and let different laser generators re-match the position of the workpiece, it will inevitably accumulate large errors, resulting in printing defects

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