Laser optical path guiding system of laser sinter molding equipment

Abstract

The invention discloses a laser optical path guiding system of laser sinter molding equipment. The laser optical path guiding system of the laser sinter molding equipment comprises a laser source, a beam expander matched with the laser source, a scanning galvanometer device matched with the beam expander and a flat field focusing lens connected with the scanning galvanometer device. The laser sinter molding equipment is provided with a molding platform, a focal plane of the flat field focusing lens is overlapped with the molding platform, and the focus point of the lens is arranged at the center of the molding platform. Due to the mentioned structure, not only can printing of a three-dimensional component be achieved very well, but also each optical component can be connected into a whole without clearances, drifting of light beams is avoided, at the same time dust and vibration are prevented. In addition, protection of optical elements like the galvanometers and the like is considered. The laser optical path guiding system is compact in structure, short in optical path, small in light energy consumption, and convenient to debug.

Description

technical field [0001] The invention relates to the field of selective laser sintering forming technology equipment at normal temperature, in particular to the laser light path guiding system of laser sintering forming equipment Background technique [0002] SLS technology (SLS: Selective Laser Sintering, selective laser sintering of powder materials) is a rapid prototyping process, which spreads material powder on the upper surface of the formed part and scrapes it; uses a high-intensity CO2 laser on the newly laid The cross-section of the part is scanned on the new layer; the material powder is sintered together under high-intensity laser irradiation to obtain the cross-section of the part and connected with the formed part below; when the cross-section of one layer is sintered, a new layer is laid Powder material, selectively sintered lower section. All in all, SLS technology uses laser to selectively sinter solid powder in layers, and makes the sintered solidified layer...

AI Technical Summary

Problems solved by technology

However, the current laser light path guidance system is prone to drifting light beams, and dust is easy to fall into the machine, which will have a negative impact on the optical path, cause a lot of light energy loss, and make system debugging difficult.

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