A method suitable for multi-material multi-process 3D printing and printing device used

Abstract

The invention discloses a multi-material and multi-process 3D printing method and a printing device used. The printing device used is composed of a moving bed device, an induction drum processing device, a curing device, a forming table, a cleaner, a waste bin and a supply Composed of silos, the forming table, cleaning device and feeding silo are respectively set on the moving bed device, the waste bin is set at the lower end of the cleaning device, and the induction drum processing device and curing device are respectively set in the moving bed device; the photosensitive drum is used for selective adsorption The solid powder material is then directional rolled on the processed forming table to achieve selective laying of powder, solidifying different types of powder materials according to the process information, and then using the auxiliary powder spreading system to lay the supporting material on the forming table, reducing the thickness of a powder layer , such a cycle, layer by layer stacking can be multi-material, multi-functional three-dimensional entity, realizes selective powder spreading, improves efficiency, saves materials, and realizes laser sintering, glue bonding and thermosetting multi-process molding.

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 forming methods of powder bed 3D printing technology mainly include three technologies: Selective Laser Sintering (SLS for short), Selective Laser Melting (SLM for short) and Three-Dimensional Printing (3DP for short). Lay a thin layer of powder material in a cylinder that can be lifted, and then selectively use laser sintering or spray binder in a specific area to make it solidify, and then lay the next layer of powder, and then ...

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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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