3d printer and 3d printing method

Abstract

The invention discloses a 3D printer, which includes a printing chamber, a printing assembly and a carrying platform are arranged inside the printing chamber, the printing assembly is arranged above the carrying platform, the printing assembly includes a printing support and is connected to the The print head assembly and the curing light assembly on the printing support, the printing support moves along the printing direction, and in the printing direction, the printing head assembly is located in front of the curing light assembly, and the printing head assembly includes printing The main print head of the model main body and the auxiliary print head for printing the support material, the material of the model main body is photosensitive resin, the printing temperature inside the printing chamber is lower than the solidification temperature of the support material, and the support material is printed on the printing surface. freeze at temperature. The invention also discloses a 3D printing method. The support material in the 3D printer and the 3D printing method of the present invention is easy to remove.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a 3D printer and a 3D printing method. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital files, using powder or curable materials, and manufacturing products by layer-by-layer printing. It is in sharp contrast to the subtractive manufacturing technology used in traditional manufacturing. In contrast, 3D printing is an additive manufacturing technology that forms the final product by superimposing layers of materials. [0003] SLA printer (using stereolithography, SLA) is one of the earliest commercial 3D printers. This type of printer uses UV-cured photosensitive resin to form a printing layer. After printing a layer, the support platform is downward (or upward) Move a certain distance to allow the photosensitive resin layer to cover the previous layer of printing surface again, and then continue to cure. The phot...

AI Technical Summary

Problems solved by technology

However, there are currently four major problems with the support material: 1. The process of removing the support material from the main body of the model is relatively difficult, requiring special solvents, high-frequency vibration or other technical means; 2. The removal efficiency of the support material is low and takes a long time; 3. After the support material is removed, there is still a part remaining on the main body of the model and cannot be avoided

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