Powder feeding device used for manufacturing three-dimensional object and powder feeding method of powder feeding device

Abstract

The invention discloses a powder feeding device used for manufacturing a three-dimensional object and a powder feeding method of the powder feeding device. The powder feeding device comprises a powderstorage trough, powder feeding hoppers, a powder feeding box, a powder feeding rotating shaft, a first gear, a second gear, a drive mechanism and a control system. The powder storage trough is sequentially provided with at least one first feeding station switch and at least one first discharging station switch from top to bottom. Butterfly valves are arranged at the bottoms of the powder feedinghoppers and are used for controlling whether powder falls to the powder storage trough or not under control of the control system. One end of the powder feeding rotating shaft is connected with the first gear, the second gear is connected with the drive mechanism, and the first gear and the second gear are engaged. When the second gear is driven by the drive mechanism to rotate, the first gear isdriven to rotate, and therefore the powder feeding rotating shaft is driven to rotate, so that powder of the powder storage trough falls to the powder feeding box under rotating of the powder feedingrotating shaft and falls to the powder feeding position through an outlet of the powder feeding box. According to the powder feeding device used for manufacturing the three-dimensional object and thepowder feeding method of the powder feeding device, the rotating speed is stable, the rotating powder discharging speed is stable and fluent, and gear transmission is stable.

Description

technical field [0001] The invention relates to the technical field of three-dimensional object manufacturing, in particular to a powder feeding device and a powder feeding method for manufacturing three-dimensional objects. Background technique [0002] As one of the additive manufacturing technologies, selective laser sintering technology, its basic working process is: the powder feeding device sends a certain amount of powder to the worktable, and the powder spreading device spreads a layer of powder material on the molding cylinder On the upper surface of the part, the galvanometer system controls the laser to scan the solid part of the powder layer according to the cross-sectional profile of the layer, so that the powder is melted and bonded with the formed part below; The thickness of one layer is lowered, the powder spreading device moves to the powder supply device, the powder supply device sends a certain amount of powder to the work table, and the powder spreading ...

AI Technical Summary

Problems solved by technology

[0004] Based on this, the present invention provides a powder feeding device and a powder feeding method for manufacturing three-dimensional objects, which solves the problem of local lack of powder on the printing surface due to the poor powder fluidity of the upper powder feeding method in the prior art; and the powder amount is replenished Not in time, thus affecting the technical problems of powder feeding stability and work efficiency

Images