Continuous constant-volume quantitative feeding device for powder materials

Abstract

The invention relates to a continuous constant-volume quantitative feeding device for powder materials, which comprises a vacuum feeding machine, a storage box, a feeding level sensor, a discharging level sensor, a sealing cavity, a powder conveying device, a multi-stage powder cleaning device and a linking platform, wherein the vacuum feeding machine is fixed above the storage box; the storage box is fixed above the sealing cavity; the powder conveying device and the multi-stage powder cleaning device are accommodated in the sealed cavity; the feeding level sensor and the discharging level sensor are fixed on the side wall of the storage box; the powder conveying device comprises a driving motor, a driving synchronous belt wheel, a driven synchronous belt wheel and a conveying belt; the driving motor is connected with the driving synchronous belt wheel through a synchronous belt; the conveying belt comprises a forward toothed belt and a reverse toothed belt which are integrally formed, the forward toothed belt is arranged on the driving synchronous belt wheel and the driven synchronous belt wheel in a sleeving mode, the convex face of the reverse toothed belt is tangent to the side wall of the storage box, powder in the storage box falls into a groove of the reverse toothed belt, and the sealing cavity is communicated with a linkage platform through a discharging opening.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a continuous constant volume and quantitative feeding device for powder materials. Background technique [0002] Powder bed laser selective sintering 3D printing is to control the laser beam to scan the powder plane according to the pattern. After the scanning is completed, the powder spreading roller spreads a layer of powder material on the upper surface of the formed part, and heats it to just below the powder At a certain temperature at the sintering point, the control system controls the laser beam to scan on the powder according to the cross-sectional pattern of the layer, so that the temperature of the powder rises to the melting point for sintering and bonding with the formed part below. After the sintering of a layer of cross-section is completed, the workbench is lowered by one layer of thickness, and the laying roller spreads a layer of uniform and dense powder on th...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a continuous constant volume and quantitative feeding device for powder materials, which can continuously feed materials during the 3D printing process without interruption, and can supply according to the actual material demand, and can Precise feeding, avoiding insufficient feeding or waste of feeding, saving time and effort, saving resources and reducing waste

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