A 3D powder printing powder removal mechanism

Abstract

The invention relates to a powder removing mechanism for 3D powder printing. The powder removing mechanism comprises a bottom cleaning brush mechanism, a middle connecting mechanism and a top drivingmechanism, wherein the bottom cleaning brush mechanism comprises a brush head rotating seat of a cylinder structure; a rotary motor A is arranged in the brush head rotating seat; a cleaning brush bristle pressing sleeve is connected onto the outer wall of the brush head rotating seat in a sliding manner; a pressing hole is formed in the end part of the cleaning brush bristle pressing sleeve; the middle connecting mechanism comprises a connecting plate; a connecting column is arranged at the back of the brush head rotating seat; the connecting plate is fixedly connected with the connecting column; a linear driving mechanism A is arranged on the connecting plate; a linear driving end of the linear driving mechanism A is connected onto the cleaning brush bristle pressing sleeve; the top driving mechanism comprises a universal hinging mechanism and a supporting plate; the universal hinging mechanism is connected between the supporting column and the supporting plate; at least two groups oflinear driving mechanisms B are arranged on the supporting plate, and are connected onto the supporting plate by means of hinging rods; and the annular inclined angle between any two adjacent lineardriving mechanisms B is at least 30 degrees.

Description

technical field [0001] The invention relates to a powder removal mechanism for 3D layer-by-layer printing, and specifically belongs to a 3D powder printing powder removal mechanism. Background technique [0002] In the layer-by-layer printing of 3D powder printing, the powder is added layer by layer to the surface of the printed object through the feeder. After the printing is completed, the powder is removed by a special blower mechanism, and this method can only be used for some parts with open surfaces; for Parts with a closed surface inside can only be cleaned layer by layer after printing layer by layer. Because the layer-by-layer cleaning is in the state of being filled with protective gas during the printing process, it is not possible to use blowers and other equipment to clean it, which is easy to cause The uneven cooling temperature of the workpiece leads to poor strength or local shrinkage; while the cleaning brush method cannot clean the printing powder embedded ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problems of uneven cooling temperature and poor cleaning effect of the cleaning brush in the prior art of 3D powder printing air blowing cleaning, and to provide a 3D powder printing powder removal mechanism

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