Adjustable powder laying mechanism for metal powder printer

Abstract

The invention relates to the field of metal powder printing, in particular to an adjustable powder laying mechanism for a metal powder printer. The adjustable powder laying mechanism comprises a connecting seat, a lifting frame, an adjusting screw rod, two powder laying scraping strips and two mini air cylinders, wherein the lifting frame is arranged in a vertical state, and one end of the liftingframe is in sliding connection with one side of the connecting seat; the two powder laying scraping strips are symmetrically arranged on the two sides of the lower end of the lifting frame in an attached mode and are arranged in a horizontal state, the two mini air cylinders are symmetrically arranged on the two sides of the upper half portion of the lifting frame, and the output ends of the twomini air cylinders are connected with the corresponding powder laying scraping strips; and one supporting plates is horizontally arranged at the bottom of the connecting seat in an extending mode. According to the adjustable powder laying mechanism for the metal powder printer, the minimum distance between the scraping strips a the printing platform is adjusted by rotating the adjusting screw rodso that the powder laying thickness can be flexibly adjusted, the two arranged scraping strips are switched up and down for powder laying, and it is guaranteed that metal powder is always located between the two scraping strips in the powder laying process, so that material waste is avoided.

Description

technical field [0001] The invention relates to the field of metal powder printing, in particular to an adjustable powder spreading mechanism for a metal powder printer. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology, also known as additive manufacturing. It is based on digital model files, using powdered metal or plastic and other bondable materials to construct by layer-by-layer printing. object technology. [0003] Ordinary printers used in daily life can print flat objects designed by computers, and the so-called 3D printers are basically the same as ordinary printers, but the printing materials are somewhat different. The printing materials of ordinary printers are ink and paper, while 3D printers are equipped with metal Different "printing materials" such as ceramics, plastics, sand, etc. are real raw materials. After the printer is connected to the computer, the "printing materials" can be superimposed layer by layer through...

AI Technical Summary

Problems solved by technology

[0004] In a metal powder printer, before the print head works, a layer of metal powder needs to be laid on the printing platform, and then the print head is formed into the desired shape by laser sintering. Therefore, the powder spreading process is particularly important. Whether the powder spreading is uniform or not It affects the printing quality of the product. At the same time, the powder thickness of many powder spreading mechanisms is relatively fixed and cannot be adjusted. Therefore, it is necessary to design a more flexible metal powder printing powder spreading mechanism.

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