Equipment for manufacturing three-dimensional object and powder feeding device thereof

Abstract

The invention provides equipment for manufacturing a three-dimensional object and a powder feeding device thereof. The powder feeding device comprises a powder feeding box provided with a bottom opening, a powder driver, a roller provided with a plurality of grooves and a driving mechanism for driving the roller to move rotatably, wherein the powder driver is arranged in the powder feeding box, the roller is arranged at the bottom opening of the powder feeding box, and powder in the powder feeding box falls from a groove of the roller under the action of the powder driver as the roller is tightly matched with the bottom opening of the powder feeding box so as to feed powder. Under the action of the powder driver, the mobility of the powder is enhanced, and an effect of applying pressure downward is achieved. Therefore, the powder can fall into the groove of the roller more continuously, so that the it is further ensured that the groove is filled with powder, and therefore, the powder feeding stability is guaranteed by means of the equipment for manufacturing the three-dimensional object and the powder feeding device thereof.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a device for manufacturing a three-dimensional object and a powder feeding device thereof. Background technique [0002] Additive Manufacturing technology (Additive Manufacturing, referred to as AM) is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. The degree of limitation does not require any tooling and molds, so the application range is very wide. As one of the additive manufacturing technologies, Selective Laser Sintering (SLS) has developed very rapidly in recent years. Its main process is: the powder feeding device sends a certain amount of powder to the work surface, and the powder spreading device Spread a layer of powder material on the upper surface of the formed part of the piston, and the...

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Problems solved by technology

[0003] In the prior art, the powder feeding device is generally divided into upper powder feeding and lower powder feeding. The upper powder feeding includes the powder feeding box and the roller arranged under the box. The rotating motion makes the powder in the groove fall to complete the powder feeding. Although this powder feeding method has the advantages of occupying a small space and adding raw material powder at any time, the disadvantage is that due to the poor fluidity of the powder, the powder in the groove does not Filling, resulting in a lack of powder feeding volume, which in turn affects the technical problem of powder feeding stability

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