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3D printing device and method

A technology of 3D printing and printing platform, applied in the direction of 3D object support structure, additive manufacturing, processing platform/substrate, etc., can solve the problems of model damage and reduce printing efficiency, so as to improve the success rate, increase the printing speed and the printing success rate , the effect of reducing the pulling force

Active Publication Date: 2020-02-18
江西迈亚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is usually raised to a height of a few centimeters, and then lowered to the height required for the layered thickness. This process greatly reduces the printing efficiency
Second, if the area of ​​the solidified layer is too large, the resulting pulling force will be greater, which may cause damage to the model when the printing platform rises
One disadvantage of this solution is that it has a certain selectivity for photosensitive resins, and photosensitive resins with relatively high hydrophilicity (such as some polyurethane acrylates containing hydrophilic polyether segments) are not compatible with this gel release layer.

Method used

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  • 3D printing device and method
  • 3D printing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Tridefluorooctyl acrylate 10g

[0047] Perfluoropolyether diacrylate MD700 (Solvay) 0.1g

[0048] Fluorine Oil Krytox 100 90g

[0049] Initiator BPO 0.1g

[0050] The above proportioned mixed solution is poured on a 3 mm thick quartz glass plate, and kept in a 60-degree oven for 1 hour to form a fluorine-containing gel layer, and the thickness of the gel layer is 2 mm.

Embodiment 2

[0052] Tridecyl octyl acrylate 6g

[0053] Perfluoropolyether diacrylate MD700 (Solvay) 4g

[0054] Fluorine Oil Krytox 200 40g

[0055] Initiator BPO 0.1g

[0056] Pouring the above proportioned mixed solution in H 2 SO 4 -H 2 o 2 The treated 3mm quartz glass plate is kept in a 60-degree oven for 1 hour to form a hydrogel layer, and the thickness of the hydrogel layer is 1mm.

Embodiment 3

[0058] Polysiloxane acrylate (Mw=200) 10g

[0059] Polysiloxane diacrylate (1000mPa.s) 1g

[0060] Methyl silicone oil (100mPa.s) water 90g

[0061] AIBN (initiator) 0.1g

[0062] The above proportioned mixed solution was poured on a plasma-treated 3 mm acrylic plate, and kept in an 80-degree oven for 3 hours to form a gel layer with a thickness of 3 mm.

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Abstract

The invention discloses a 3D printing device. The 3D printing device comprises a resin tank, a printing platform and a light source system. A hard transparent plate is arranged on the bottom face of the resin tank, a transparent gel layer is arranged on the hard transparent plate, the printing platform is located on the upper portion of the resin tank, a light source of the light source system isarranged on the lower portion of the hard transparent plate, and the gel layer contains silicone oil or fluorocarbon oil. The invention further provides a 3D printing method. According to the 3D printing device and method, drawing force during releasing can be obviously reduced, and meanwhile, conventional all photosensitive resin on the market can be compatible.

Description

technical field [0001] The invention relates to rapid prototyping technology, in particular to a photocuring 3D printing device and method. Background technique [0002] Light-curing 3D printing uses liquid photosensitive resin as the printing material, which is cured with light of a specific wavelength. The whole process has no mechanical force and heating process, and has the highest molding precision. Photocuring 3D printing mainly includes two types of technologies: Stereolithography (SLA) and Digital Light Processing (DLP). Among them, the process of DLP is to design a three-dimensional solid model and perform slice processing, and the generated image is projected onto the surface of the liquid photosensitive resin through a digital projector, so that the resin in a specific area is cured. Then the printing platform moves up for a certain distance, and after the surface of the cured layer is completely replenished with liquid resin, the next projection is performed, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/124B29C64/135B29C64/20B29C64/245B29C64/264B29C64/268B33Y30/00
CPCB29C64/124B29C64/135B29C64/20B29C64/245B29C64/264B29C64/268B33Y30/00
Inventor 吴晶军
Owner 江西迈亚科技有限公司
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