Additive manufacturing powder falling device

Abstract

The invention discloses an additive manufacturing powder falling device. The additive manufacturing powder falling device comprises a powder feeding box. A powder outlet is formed in the bottom of the powder feeding box. A powder homogenizing mechanism and a powder feeding mechanism are sequentially arranged below the powder feeding box and arranged in empty grooves with the upper portions and the lower portions opened. The empty grooves are in communication through a hollow structure with the upper portion and the lower portion opened. The upper opening of the powder homogenizing mechanism is connected with the powder outlet of the powder feeding box. The problems of uneven powder falling and the like are solved through the powder homogenizing mechanism, the powder feeding mechanism can accurately control the powder feeding amount of powder, quantitative powder feeding is achieved, meanwhile, powder waste is reduced, and the powder paving quality is improved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a powder dropping device for additive manufacturing. Background technique [0002] Additive manufacturing technology can also be called 3D printing technology, which realizes the printing of three-dimensional models through the process of automatic numerical control layer-by-layer material accumulation. Compared with traditional processing technology, 3D printing technology does not need to make additional molds, and can directly process finished products. Moreover, it can overcome the special structural obstacles that cannot be realized by traditional machining, can realize the simplified production of any complex structural parts, and can automatically, directly and accurately transform design ideas from CAD models into models or devices with certain functions. [0003] 3D printing technology can be divided into selective laser sintering technology (SLS), select...

AI Technical Summary

Problems solved by technology

[0004] The existing additive manufacturing equipment based on the powder spreading method is to raise the powder supply box to a layer thickness, and the forming cylinder is lowered to a layer thickness, and the scraper scrapes the powder from the powder supply cylinder into the forming cylinder to complete the powder spreading process. Some problems, such as the powder spreading process is too cumbersome, which affects the production efficiency; the powder supply tank requires a relatively large size, which increases the volume of the equipment, and requires a large amount of powder without increasing operating costs.

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