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Method for 3D printing by utilizing multi-wavelength light

A 3D printing, multi-wavelength technology, applied in the direction of 3D object support structure, additive manufacturing, processing and manufacturing, etc., can solve the problems of increased printing cost, large optical and mechanical loss, etc., to achieve improved service life, low energy requirements, and reduced manufacturing costs Effect

Inactive Publication Date: 2019-01-18
NINGBO SHISHENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the wavelength of light required for the polymerization of photosensitive materials is related to its own material properties and photoinitiators. However, due to the limitation of the wavelength of DLP optical machines on the market, the current photosensitive materials are all processed by a single 380-410nm wavelength of light. Curing, while the light machine and single light source work for a long time, it needs to output a lot of energy, the loss of the light machine is large, and the light machine becomes a consumable part of the light curing 3D printing equipment, which increases the printing cost

Method used

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  • Method for 3D printing by utilizing multi-wavelength light
  • Method for 3D printing by utilizing multi-wavelength light
  • Method for 3D printing by utilizing multi-wavelength light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Use light-curing 3D printing equipment to perform multi-wavelength 3D printing according to the above steps, wherein the radiation source 3 is an optical machine, and the light source of the optical machine includes bulb 1 and bulb 2. Bulb 1 provides light with a wavelength of 200-300nm, and bulb 2 provides light with a wavelength Illumination of 350-450nm; the polymerizable liquid 4 includes two mixed components, which can be polymerized and cured under 200-300nm and 350-450nm wavelength light irradiation respectively.

[0042] The lights of different wavelengths emitted by the light machine during the 3D printing process are projected onto the light-curing molding surface 6 without overlapping each other. The projection of light emitted by bulb 1 is projection 1, and the projection of light emitted by bulb 2 is projection 2. For example, image 3 As shown, the radiation range 7 of the radiation source is projected on the light-curing molding surface 6, wherein the proj...

Embodiment 2

[0044] Use light-curing 3D printing equipment to perform multi-wavelength 3D printing according to the above steps, wherein the radiation source 3 is an optical machine, and the light source of the optical machine includes bulb 1 and bulb 2. Bulb 1 provides light with a wavelength of 200-300nm, and bulb 2 provides light with a wavelength Illumination of 350-450nm; the polymerizable liquid 4 includes two mixed components, which can be polymerized and cured under 200-300nm and 350-450nm wavelength light irradiation respectively.

[0045] The lights of different wavelengths emitted by the light machine during the 3D printing process are projected onto the light-curing molding surface 6 and partially overlapped. The projection of light emitted by bulb 1 is projection 1, and the projection of light emitted by bulb 2 is projection 2, as shown in Figure 4 As shown, the radiation range 7 of the radiation source is projected on the photocuring molding surface 6, wherein the first proje...

Embodiment 3

[0047] Use light-curing 3D printing equipment to perform multi-wavelength 3D printing according to the above steps, wherein the radiation source 3 is an optical machine, and the light source of the optical machine includes bulb 1 and bulb 2. Bulb 1 provides light with a wavelength of 200-300nm, and bulb 2 provides light with a wavelength Illumination of 350-450nm; the polymerizable liquid 4 includes two mixed components, which can be polymerized and cured under 200-300nm and 350-450nm wavelength light irradiation respectively.

[0048] The lights of different wavelengths emitted by the light machine during the 3D printing process are projected onto the light-curing molding surface 6 to completely overlap, the projection of the light emitted by bulb 1 is projection 1, and the projection of light emitted by bulb 2 is projection 2, for example Figure 5 As shown, the radiation range 7 of the radiation source is projected on the photocuring molding surface 6, wherein the projection...

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Abstract

The invention discloses a method for 3D printing by utilizing multi-wavelength light. A mixed polymerizable fluid composed of multiple components is taken as a raw material; during a curing process after radiation is received by the raw material, different components can absorb radiations in different wavelengths so as to perform polymerization reaction; the components are cured and molded so as to jointly form a 3D printing component; the radiation sources for supplying polymerization energy are in wider scope, so that the component selectivity of the corresponding polymerizable fluid is higher and the performance after the curing of raw material is various; multiple radiation sources are adopted and the energy supplied by each radiation source is reduced, namely, the demand on energy ofeach light source in 3D printing is low, so that the manufacturing cost of equipment is lowered and the service life of single light source is prolonged.

Description

technical field [0001] The invention relates to the technical field of three-dimensional molding, in particular to a method for 3D printing using multi-wavelength light. Background technique [0002] The technical principle of light-curing 3D manufacturing is to layer the 3D model in one direction to obtain the contour information or image information of each layer, and then use the light source to realize the data information of each layer, and combine the polymer monomer and prepolymer The photoinitiator (photosensitizer) is composed, and after being irradiated by UV light, it causes a polymerization reaction, completes the curing of each layer, repeats iterations, and finally forms a three-dimensional solid model. Due to the short production cycle and low production cost of 3D manufacturing, and there is no need to consider the size of the product market, that is, 3D models with different products can use the same equipment and consumables to produce different products, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106B29C64/264B29C64/386B33Y10/00B33Y30/00B33Y50/00
CPCB29C64/106B29C64/264B29C64/386B33Y10/00B33Y30/00B33Y50/00
Inventor 姚志锋李方胡梦龙其他发明人请求不公开姓名
Owner NINGBO SHISHENG TECH CO LTD
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