An adjustable powder spreading mechanism for metal powder printers

Abstract

The invention relates to the field of metal powder printing, in particular to an adjustable powder spreading mechanism for a metal powder printer, which includes a connecting seat, a lifting frame, an adjusting screw, two powder spreading scrapers and two mini cylinders, and the lifting frame is vertical It is set in a straight state and one end is slidingly connected to one side of the connecting seat. The two powder spreading scrapers are symmetrical and fitted on both sides of the lower end of the lifting frame. The powder spreading scrapers are set in a horizontal state, and the two mini cylinders are symmetrical. It is arranged on both sides of the upper half of the lifting frame, and the output ends of the two are connected to the corresponding powder spreading scraper. A support plate is horizontally extended at the bottom of the connecting seat. The invention adjusts the scraper and printing by rotating the adjusting screw. The minimum distance between the platforms can flexibly adjust the thickness of the powder spreading. By setting the two scrapers to switch up and down for powder spreading, it is ensured that the metal powder is always between the two scrapers during the powder spreading process, without causing waste of material.

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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