3D printing method suitable for multiple materials and multiple processes and used printing device

Abstract

The invention discloses a 3D printing method suitable for multiple materials and multiple processes and a used printing device. The used printing device comprises a moving lathe bed device, a sensing drum processing device, a curing device, a forming table, a cleaner, a waste material bin and a material supply bin; the forming table, the cleaner and the material supply bin are arranged on the moving lathe bed body; the waste material bin is arranged at the lower end of the cleaner; the sensing drum processing device and the curing device are arranged in the moving lathe body device. The 3D printing method comprises the following steps: using a photosensitive drum to selectively adsorb solid powder materials, then carrying out directional rolling on the processed forming table to realize selective powder laying, curing the different types of powder materials according to technique information, then using an auxiliary powder paving system to lay a supporting material on the forming table, descending the thickness of a powder layer, and repeating the steps to obtain a multi-material and multi-functional three-dimensional object through overlapping layer by layer. Selective powder laying is realized, the efficiency is improved, the materials are saved, and multi-process forming of laser sintering, glue bonding and thermocuring is realized.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a multi-material and multi-process 3D printing method and a printing device used therefor. Background technique [0002] 3D printing is a new manufacturing technology that gradually emerged in the late 1980s. 3D printing is also called rapid prototyping or additive manufacturing technology. , is manufactured layer by layer by a computer-controlled 3D printing system, and superimposed layer by layer to obtain the target three-dimensional product. [0003] The molding methods of powder bed 3D printing technology mainly include three technologies: selective laser sintering (Selective Laser Sintering, SLS for short), selective laser melting (Selective Laser Melting, SLM for short) and three-dimensional printing (Three-Dimensional Printing, 3DP for short). The material is laid in a thin layer in the cylinder that can be lifted, and then laser sintering or spraying adhesive is selectively u...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the above-mentioned existing powder bed 3D printing process can only realize the printing of a single material, and cannot realize the printing of multi-material parts and multi-material assemblies. One printing device can only realize one molding process, and the printing method Complicated, slow molding speed and other problems, and provide a multi-material multi-process 3D printing method and printing device used

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