A Powder Bed Substrate Rotation Apparatus for Supportless Printing

Abstract

A powder bed substrate rotation device that can realize unsupported printing, including a frame, the bottom of the frame is connected to the bottom plate of the frame, and a lead screw is installed at 4 corners inside the frame, and the two opposite corners are the first wire The two opposite corners are the second lead screw, the bottom of the first lead screw is connected with the first stepping motor through a coupling, the bottom of the second lead screw is directly inserted on the bottom plate of the frame, and can rotate freely; 4 lead screws A bracket is connected to the top, the middle part of the frame is connected to the powder storage plate, the bracket passes through the powder storage plate, the top of the bracket is connected to the ball head structure through a rotating structure, and the printing substrate is connected to the ball head structure; the invention can make printing The substrate is tilted at any angle within the set angle range, thereby changing the printing direction and realizing unsupported printing; it has good sealing performance, high degree of integration, sensitive control, stable structure, wide application range, and can realize unsupported printing, etc. advantage.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a powder bed substrate rotating device capable of unsupported printing. Background technique [0002] In the existing powder bed printing equipment, the printing substrate can only move up and down in the cavity. When the printing parts are more complicated, it is necessary to add support to the part of the structure to avoid the external force of the scraper during the powder spreading process. The structure produces subsidence, which affects the overall accuracy of the part; after the printing is completed, the support structure needs to be removed, but some internal structure supports are often difficult to remove, and when the support is removed, the internal stress of the part will be released, resulting in deformation of the part. This affects the overall accuracy of the part. Contents of the invention [0003] In order to overcome the above-mentioned shor...

AI Technical Summary

Problems solved by technology

[0002] In the existing powder bed printing equipment, the printing substrate can only move up and down in the cavity. When the printing parts are more complicated, it is necessary to add support to the part of the structure to avoid the external force of the scraper during the powder spreading process. The structure produces subsidence, which affects the overall accuracy of the part; after the printing is completed, the support structure needs to be removed, but some internal structure supports are often difficult to remove, and when the support is removed, the internal stress of the part will be released, resulting in deformation of the part. In turn affecting the overall accuracy of the part

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