Powder sieving device of 3D printing device

Abstract

The invention discloses a powder sieving device of a 3D printing device. The device comprises a supporting plate, a sieving plate, a powder discharging plate and a linkage device, the lower end of thepowder discharging plate is sequentially provided with a transverse rectangular groove and a longitudinal rectangular groove from bottom to top, the supporting plate is arranged in the transverse rectangular groove, the sieving plate is arranged in the longitudinal rectangular groove, the two ends of the powder discharging plate are each provided with a sliding groove and a check block, a slidingrod is arranged on each check block, a spring and a sliding block are arranged on each sliding rod, the bottom end of each sliding block is connected with the sieving plate, a powder storage groove is formed in the powder discharging plate, a powder outlet is formed in the bottom of the powder storage groove, a mounting groove is formed in the supporting plate, a spring and a lower abutting blockare arranged in the mounting groove, the lower end of the lower abutting block is connected with the spring, the upper end of the lower abutting block is in contact fit with the lower end of the sieving plate, L-shaped grooves are formed in the two sides of the powder outlet, L-shaped abutting blocks and springs are arranged in the L-shaped grooves, the upper ends of the L-shaped abutting blocksare connected with the springs, and the lower ends of the L-shaped abutting blocks are in contact fit with the upper end of the sieving plate. The device can be matched with the motion period of a scraping knife, and powder output and powder laying are more uniform.

Description

technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to a powder sieving device of a 3D printing device. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, can quickly manufacture various structurally complex parts based on three-dimensional models. 3D printing technology enables the structural design of parts to be free from the restrictions of traditional manufacturing technology, which improves the manufacturing capacity of the process; at the same time, 3D printing technology also has the advantages of short product development cycle and low research and development costs. 3D printing technology has developed rapidly in recent years, and it has been widely used in medical, automotive, aerospace, art and other industries, and can almost directly form parts of any complex geometry. [0003] The powder spreading device in the prior art is all together with the scraper...

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Problems solved by technology

[0003] The powder spreading device in the prior art is all together with the scraper, and the powder is applied at the same time as the powder is applied, but there will be uneven powder application, which will affect the quality of the product after printing.

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