Residual powder recovery processing system of 3D printing equipment

Abstract

A residual powder recovery processing system of 3D printing equipment comprises a vacuum pump, a residual powder collecting container, a new powder collecting container, a waste residue collecting container, a first cyclone separation tank, a second cyclone separation tank and a vibrating screen. The vacuum pump comprises an air suction port and an exhaust port. The exhaust port is sequentially and selectively communicated with the residual powder collecting container, the feeding end of the first cyclone separation tank and the feeding end of the second cyclone separation tank, and the air suction port is communicated with the exhaust end of the second cyclone separation tank. The discharging end of the first cyclone separation tank is selectively communicated with the feeding end of the vibrating screen, and the discharging end of the vibrating screen is communicated with the new powder collecting container. The discharging end of the second cyclone separation tank is communicated with the waste residue collecting container. According to the residual powder recovery processing system of the 3D printing equipment, unmanned screening operation can be basically achieved, a large amount of powder can be automatically conveyed and screened, internal circulation can be achieved through a certain amount of inert gas, the inert gas is saved, the powder performance is protected, the dust storm risk is avoided, and the personal safety of operators is protected.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a waste powder recycling and processing system of 3D printing equipment. Background technique [0002] Additive Manufacturing technology (Additive Manufacturing, AM) is an advanced manufacturing technology with the advantages of digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and various types of materials. Among them, Selective Laser Melting (SLM) is one of the rapidly developing additive manufacturing technologies in recent years. Its basic process is as follows: the upper powder feeding device sends a certain amount of metal powder to the work table, conventional powder spreading and The scraper mechanism spreads a layer of powder material on the upper surface of the formed part of the forming cylinder, and the galvanometer system controls the laser to scan the solid part of the powder layer according to the cross-se...

AI Technical Summary

Problems solved by technology

[0004] With the demand of the market, the size of our forming cylinder and printing workpiece is getting larger and larger, and the amount of powder produced by printing a forming cylinder is also increasing. It is not only very laborious to use the previous manual method to transport and process the remaining powder. And it is very dangerous, because some metal powders have strong activity and are easily oxidized in the natural air. The oxidized powder not only affects the sintering performance, but may even form a dust explosion during the gas transportation and screening process, which not only pollutes the environment, Moreover, the powder contacting the operator may bring safety hazards to personnel.

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