Powder feeding device for forming selective laser melting digital material

Abstract

The invention discloses a powder feeding device for selective laser melting digital material forming. The powder feeding device comprises two independent powder feeding mechanisms. The two independent powder feeding mechanisms have multi-material weighing and distributing and fixed-point conveying functions; powder of various different materials can be quantitatively and accurately supplied according to the required weight ratio, so that the ratio of the powder in each powder spreading layer is controllable; and the specified material can be accurately conveyed to a preset position of a forming surface, so that the material composition in different directions in each powder paving layer is changed in a gradient manner. According to the powder feeding device, the two independent powder feeding mechanisms are organically integrated, powder laying can be considered, powder of different materials can be put in a fixed-point and fixed-area mode, the powder utilization rate and the multi-material applicability are greatly improved, and a brand-new technical scheme about combination of powder laying and multi-material powder leakage is provided for the technical field of 3D printing.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a powder feeding device for laser selective melting digital material forming. Background technique [0002] Digital material laser selective melting technology is an additive manufacturing technology that uses a variety of powder materials (at least one of which is a metal material) to prepare a single complex functional part with a variety of material structures. [0003] Up to now, most of the commercialized rapid prototyping machines are designed and manufactured based on a single material product, and 3D printing is often limited to using only one material at a time, or mixed printing of different materials. It is difficult to meet the increasing complexity requirements of industrial products and the flexibility and efficiency requirements required by the globalization of the market. [0004] However, digital materials have great potential for demanding requirements in ...

AI Technical Summary

Problems solved by technology

[0003] Up to now, most of the commercialized rapid prototyping machines are designed and manufactured based on a single material product, and 3D printing is often limited to using only one material at a time, or mixed printing of different materials

It is difficult to meet the increasing complexity requirements of industrial products and the flexibility and efficiency requirements required by market globalization

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