3D printing system

A 3D printing and wavelength conversion unit technology, applied in the field of 3D printing systems, can solve the problems of low UV light output power, aging, and limited printing efficiency

Pending Publication Date: 2021-05-18
YLX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, UV light has certain environmental hazards. When it irradiates human skin, it can cause skin erythema and aging. Limits the improvement of printing efficiency
[0004] Especially when printing some multi-color models, such as human organ models, in order to restore the shape of the organs more realistically, it is necessary to use a variety of different materials to express blood vessels, bones, institutions and other tissues in the workpiece, because different 3D printing materials The light absorption range is different, so the monochromatic light source 3D printer cannot meet the printing of various materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, the light emitting unit 10 of the 3D printing system is a blue semiconductor laser, the wavelength conversion unit 20 includes a control unit, and a fluorescent pink wheel driven by the control unit, the fluorescent pink wheel includes The powder-free ring area 2011, the green phosphor ring area 2012 and the red phosphor ring area 2013 are set in sequence outside.

[0053] The above-mentioned 3D printing system is loaded on the 3D printing equipment, and blue light curing resin is added in the 3D printing equipment. Set the optical power density of the pattern directed to the surface of the photocurable material to be cured to 10mW / cm 2 , the printing layer thickness is 0.05mm, and the single layer curing time is 2s.

[0054] Printing starts, the blue semiconductor laser emits 445nm blue excitation light after the control unit 40 applies an external current, and then the excitation light is guided to the powder-free ring area 2011 of the fluorescent...

Embodiment 2

[0056]In this embodiment, the light emitting unit 10 of the 3D printing system is a blue semiconductor laser, the wavelength conversion unit 20 includes a control unit, and a fluorescent pink wheel driven by the control unit, the fluorescent pink wheel includes The powder-free ring area 2011, the green phosphor ring area 2012 and the red phosphor ring area 2013 are set in sequence outside.

[0057] Load the above 3D printing system on a 3D printing device, and add green light-curable resin to the 3D printing device. Compared with Embodiment 1, the type of photocurable resin in this embodiment is changed, and the control unit needs to adjust the working parameters of the 3D printing system before 3D printing can be performed. Specifically, the optical power density of the pattern to be guided to the surface of the photocurable material to be cured ranged from 10mW / cm 2 Adjust to 15mW / cm 2 , and move the position of the fluorescent pink wheel 201 , so that the excitation light...

Embodiment 3

[0060] In this embodiment, the light emitting unit 10 of the 3D printing system is a blue semiconductor laser, the wavelength conversion unit 20 includes a control unit, and a fluorescent pink wheel driven by the control unit, the fluorescent pink wheel includes The powder-free ring area 2011, the green phosphor ring area 2012 and the red phosphor ring area 2013 are set in sequence outside.

[0061] Load the above 3D printing system on a 3D printing device, and add red light-curable resin to the 3D printing device. Compared with Embodiment 1, the type of photocurable resin in this embodiment is changed, and the control unit needs to adjust the working parameters of the 3D printing system before 3D printing can be performed. Specifically, the optical power density of the pattern to be guided to the surface of the photocurable material to be cured ranged from 10mW / cm 2 Adjust to 30mW / cm 2 , adjust the curing time of the single layer from 2s to 3s, and move the position of the ...

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Abstract

The invention discloses a 3D printing system. The 3D printing system comprises a light-emitting unit for emitting excitation light, a wavelength conversion unit, a combination lens unit, a DMD digital micromirror unit and a control unit, wherein the wavelength conversion unit is used for receiving the excitation light and outputting curing light; the combination lens unit is used for refracting the curing light to the DMD digital micromirror unit and guiding the curing light reflected by the DMD digital micromirror unit to a to-be-cured light curing material; the DMD digital micromirror unit is used for receiving the curing light refracted by the combination lens unit and selectively reflecting the curing light; and the control unit is electrically connected with the light-emitting unit, the wavelength conversion unit, the combination lens unit and the DMD digital micromirror unit. According to the 3D printing system, the light-emitting unit is used as a curing light source, and the wavelength conversion unit is additionally arranged, so that the laser wavelength of the curing light source can be adjusted, harm caused by ultraviolet light is avoided, monochromatic light curing material limitation is broken through, the system has the advantages of being safe, environmentally friendly, high in light-emitting efficiency, good in light beam quality and the like, and multi-color 3D printing can be achieved.

Description

technical field [0001] The invention relates to a 3D printing system, belonging to the technical field of 3D printing. Background technique [0002] 3D Printing (3D Printing), also known as Additive Manufacturing, is an emerging rapid prototyping (Rapid Prototyping Manufacturing) technology, which has the advantages of high molding efficiency, low material cost, and the ability to prepare complex structures. Unique manufacturing advantages It has been greatly favored by various fields and is known as the symbol of the third industrial revolution. 3D printing technology is based on the computer three-dimensional design model, and uses laser sintering, heating melting or light curing to accumulate and add materials such as metal, ceramic powder or polymer resin layer by layer, so as to manufacture physical products. 3D printing technology involves a variety of molding methods. Based on the principle of photo-curing molding, the printing technologies using photo-curing resin a...

Claims

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Application Information

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IPC IPC(8): B29C64/268B29C64/286B29C64/393B33Y30/00B33Y50/02
CPCB29C64/268B29C64/286B29C64/393B33Y30/00B33Y50/02
Inventor 崔可建
Owner YLX INC
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