Multi-process 3D (three dimensional) printing method

Abstract

The invention provides a multi-process 3D (three dimensional) printing method. A three-dimensional model is subjected to hierarchical processing to obtain the material composition and profile information of each layer of cross section; different printing mechanisms are selected according to different material composition information; in a powder distributing mechanism, a gradient material printing mechanism and a microdroplet ink jet printing head mechanism, different powder or liquid materials are respectively loaded into corresponding material boxes according to different printing regions and different printing materials, and the materials are evenly printed on the corresponding printing regions in sequence, so the integrated printing of mixed material objects of different kinds and structures is realized by adopting multiple materials and multiple technologies. The multi-process 3D printing method has the advantages that the limitation of the existing 3D printing that a single technology is adopted and only single-material homogeneous printing is realized is overcome; the printing of a complex structure is easily realized; and convenience is provided for printing a 3D object.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a multi-process 3D printing method. Background technique [0002] 3D printing is a kind of additive manufacturing and rapid prototyping. It is based on digital model files and uses powder, liquid, liquid-solid mixture, wire, sheet and other forms of metals, polymers, ceramics, and biological materials. Materials, etc., the technology of constructing objects by layer-by-layer printing. Its advantages are precise physical replication, unlimited combinations of materials, unlimited design space, and easy realization of complex structures, which are beyond the reach of traditional manufacturing methods. [0003] 3D printing mainly includes the following molding technologies: selective laser sintering (SLS) is to sinter the solid part of the powder according to the interface profile information; selective laser sintering (SLM) is to rapidly melt the powder material with a laser b...

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Problems solved by technology

[0007] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide users with a multi-process 3D printing method, which overcomes the single process of the 3D printing device and method in the prior art, and the single printing material that can be completed cannot be realized. Defects in the overall printing of multi-material mixed-molded objects

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