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Continuous 3D (three-dimensional) printing system

A 3D printing and photosensitive resin technology, applied in 3D object support structure, additive manufacturing, manufacturing tools, etc., can solve the problems of long leveling time, precision restriction, and long printing cycle of photosensitive resin, so as to avoid the refilling process of photosensitive resin , Continuous fast printing, long printing time effect

Active Publication Date: 2019-01-18
TAIZHOU POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional photocuring 3D printing technology finally obtains a 3D entity by layer-by-layer stacking. This method makes the accuracy of the printed product restricted by the layer thickness; Long print cycles due to photoresin leveling time (top-down printing) or the need to mechanically peel the cured layer from the tank inner floor and resin refill (bottom-up printing)
However, there are no reports on photosensitive resin systems specifically for continuous 3D printing

Method used

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  • Continuous 3D (three-dimensional) printing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the continuous 3D printing system of this embodiment includes a light-transmitting window (1), an uncured layer (2), a photosensitive resin (3), a trough (4), an optical device (5), and an object stage (6 ), motor (7) and cured product (8), described light-transmitting window (1) is positioned at the bottom of trough (4); described photosensitive resin (3) is located at the inside of trough (4);

[0030] The photosensitive resin (3) contains titanium dioxide nanoparticles and a component that can be photocatalytically degraded into a polymerization inhibitor;

[0031] The photosensitive resin (3) contains nano-titanium dioxide particles with a particle size of 1 nm; the crystal form of the nano-titanium dioxide is an anatase structure.

[0032] In the photosensitive resin (3), the component that can be photocatalytically degraded into a polymerization inhibitor is quinhydrone;

[0033] The formation process of the uncured layer is as follows...

Embodiment 2

[0038] Such as figure 1 As shown, the continuous 3D printing system of this embodiment includes a light-transmitting window (1), an uncured layer (2), a photosensitive resin (3), a trough (4), an optical device (5), and an object stage (6 ), a motor (7) and a cured product (8), the light-transmitting window (1) is located at the bottom of the trough (4); the photosensitive resin (3) is located inside the trough (4);

[0039] The photosensitive resin (3) contains titanium dioxide nanoparticles and a component that can be photocatalytically degraded into a polymerization inhibitor;

[0040] The photosensitive resin (3) contains nano-titanium dioxide particles with a particle size of 300 nm; the crystal form of the nano-titanium dioxide is an anatase structure.

[0041] In the photosensitive resin (3), the component that can be photocatalytically degraded into a polymerization inhibitor is bis(2-diphenylphosphophenyl) ether;

[0042] The formation process of the uncured layer is ...

Embodiment 3

[0047] Such as figure 1 As shown, the continuous 3D printing system of this embodiment includes a light-transmitting window (1), an uncured layer (2), a photosensitive resin (3), a trough (4), an optical device (5), and an object stage (6 ), a motor (7) and a cured product (8), the light-transmitting window (1) is located at the bottom of the trough (4); the photosensitive resin (3) is located inside the trough (4);

[0048] The photosensitive resin (3) contains titanium dioxide nanoparticles and a component that can be photocatalytically degraded into a polymerization inhibitor;

[0049] The photosensitive resin (3) contains nano-titanium dioxide particles with a particle size of 30 nm; the crystal form of the nano-titanium dioxide is an anatase structure.

[0050] The components that can be photocatalytically degraded into polymerization inhibitors in the photosensitive resin (3) are quinhydrone and hydrogen peroxide, and the molar ratio is 4:1;

[0051] The formation proc...

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Abstract

The invention provides a continuous 3D (three-dimensional) printing system. The continuous 3D printing system comprises a light transmission window (1), a non-curing layer (2), a photosensitive resin(3), a material tank (4), optical equipment (5), an object carrying stage (6), a motor (7) and a curing product (8), wherein the light transmission window (1) is positioned at the bottom part of the material tank (4); the photosensitive resin (3) is arranged in the material tank (4), and contains titanium dioxide nanoparticles and components which can be degraded into a blocking agent by visible light catalysis. The continuous 3D printing system has the beneficial effects that the non-curing layer is formed in the light transmission window in the printing process, the curing body mechanical stripping and photosensitive resin refilling process of the traditional 3D printing method can be effectively avoided, the continuous printing effect is realized, and the printing speed is higher than the printing speed of the traditional photosensitive resin 3D method, and is more than 20 times higher than the printing speed of the traditional 3D method; in the printing process, the thickness of the light transmission window is 3 to 50mm, the easiness in cracking and deformation in the printing process is avoided under the function of mold plugging force, the precision of the printed product ishigher, and the printing speed is comparable with the latest CLIP technique and reaches 500mm / h.

Description

technical field [0001] The invention relates to a continuous 3D printing system, belonging to the technical field of printing. Background technique [0002] Generally, 3D printing is a technology of manufacturing three-dimensional products by adding materials layer by layer. This technology is a combination of cutting-edge technologies in many fields and is known as the core technology of the "third industrial revolution". Among them, the light-curing 3D printing rapid prototyping process has the characteristics of low energy consumption, low cost, and high forming precision. At present, the traditional photocuring 3D printing technology finally obtains a 3D entity by layer-by-layer stacking. This method makes the accuracy of the printed product restricted by the layer thickness; Long print cycles due to photoresin leveling time (top-down printing) or the need to mechanically peel the cured layer from the tank inner floor and resin refill (bottom-up printing). [0003] Mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/129B29C64/20B29C64/286B33Y30/00
CPCB33Y30/00B29C64/129B29C64/20B29C64/286
Inventor 何岷洪刘柳李曙生梁子骐于雯张云峰
Owner TAIZHOU POLYTECHNIC COLLEGE
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