A powder feeder

Abstract

The invention discloses a powder supply and spreader, which belongs to the field of additive manufacturing. It includes a powder storage chamber, a powder supply roller, a powder spreading roller, a level detector and a power device. The powder supply roller is a rotor structure; the powder spreading roller is cylindrical; the powder supply roller includes a first powder supply rotor and The first powder storage tank, the second powder supply rotor and the second powder storage tank; the first and second powder storage tanks are arranged at the inner bottom of the powder storage chamber and are higher than the powder spreading roller; the second powder storage tank The first and second powder supply rotors are respectively installed in the first and second powder storage tanks, the first and second powder supply rotors and the first and second powder storage tanks are symmetrical to the powder spreading roller; the first , The second powder supply rotor is equipped with powder feeding blades, which are equidistantly fixed on the powder supply rotor. The invention adopts the rotor structure with powder feeding blades to realize quantitative powder supply and powder spreading, increases the powder supply amount and improves efficiency; adopts cylindrical powder spreading roller and sets the powder outlet on the powder spreading roller to realize uniform powder spreading. Spread powder to improve the quality of powder spread.

Description

Technical field [0001] The present invention relates to the field of additive manufacturing, to a 3D printer, and particularly relates to a powder for dusting is one kind of 3D printers. Background technique [0002] Additive manufacturing a finished part processed by layering a scanning manner. In the process, each layer finished processing, a decreased thickness of the table, for the powder dusting powder is then fed by the amount of dusting powder paving mechanism, after the layer by laser powder sintering process. This process is repeated, the final completion of processing. [0003] In additive manufacturing that is 3D printing technology, to solve the problem for the powder dusting has been the hot topic of 3D printing technology, a variety of devices on the market for the powder dusting proposed, due to various deficiencies, also in the use It has been difficult to meet the desired effect. 3D printing technology in the field of powder spreading their quality determine the ...

AI Technical Summary

Problems solved by technology

[0003] In the field of additive manufacturing, that is, 3D printing technology, solving the problem of powder supply and spreading has always been a hot spot in the research of 3D printing technology. The various powder supply and spreading devices proposed on the market are not suitable for use due to various deficiencies. It has been difficult to meet the ideal effect

If some powder supply and spreading devices are designed separately, powder is spread while external powder is supplied, which will undoubtedly increase the structure and equipment volume, resulting in an increase in equipment cost, and it is also difficult to achieve a good powder spreading effect; some devices will supply powder Combining powder spreading, the initial idea is of course to improve the efficiency and improve the quality of powder spreading. Some use a single scraper, but it is difficult to improve the quality of powder spreading; some use double scrapers, but due to some shortcomings in the design The scraper is easily damaged, such as encountering hard particles; most devices do not dig deeply for quantitative powder supply, resulting in waste of powder

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