High precision light-cured resin molding 3 D (three dimensional) printer

A light-curing resin and 3D printer technology, applied in the field of 3D printers, can solve the problems of low light content, invisible product molding, waste of resin, etc., and achieve obvious technological progress, easy printing and separation, and scientific and reasonable design.

Inactive Publication Date: 2015-02-04
UNIQUE MULTIDIMENSION DALIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"The light source of this patent application is a projection device, and the projection lens is located above the processing platform. Not only does it need a high-power lighting lamp as the light source, but also when the light curing resin is used, the light content of the wavelength suitable for the light curing resin is very low. It takes a lot of waste to get the resin to cure with little reaction
At the same time, the projection equipment increases the size of the printer, and the bottom layer of the product is printed first during the printing process, and then the printing platform descends into the liquid and then prints the upper layer. In this process, the cured semi-finished products are all descended into the liquid with the printing platform. Therefore, the process of forming the product cannot be seen. At the same time, if the printed product is high, there needs to be a deep enough liquid tank and liquid resin
[0003] At the same time, there is also a technician, Wang Chengwei, who disclosed his invention "LCD liquid crystal screen selective light transmiss

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: A 3D printer formed by high-precision light-cured resin. The printing size range of this printer is 160*110*200mm (length*width*height). The technical solution adopted is:

[0026] Including the LED light source 3, the power of the LED light source 3 is 200W, and the specification is 14 strings and 14 parallels. The bottom of the LED light source 3 is provided with a heat conduction unit 2 and a heat dissipation unit 1, the heat conduction unit 2 adopts a heat pipe or a heat plate, the heat dissipation unit 1 is provided with fins and a fan for heat dissipation, and the fan outlet is arranged at the bottom of the printer to exhaust air.

[0027] The LED light source 3 is an ultraviolet LED light source with a wavelength of 375-405NM, and a luminous flux 4 is arranged between the periphery of the LED light source 3 and the upper Fresnel lens 6; the luminous flux 4 adopts an aluminum alloy plate.

[0028] The area of ​​the Fresnel lens 6 can cover the liquid...

Embodiment 2

[0044] Such as image 3 As shown, as another embodiment, the light source of the present invention adopts a plane LED light board 15, and the area of ​​the plane LED light board 15 is larger than that of the liquid crystal screen 7, and the distance between the two is about 10mm. The Fresnel lens is canceled, and the plane LED light board 15 The light from the light directly hits the liquid crystal screen 7, and in this embodiment, there is basically no light spots, no dark corners are formed, the light loss is small, and the printing accuracy is improved. The heat dissipation of the flat LED light board 15 adopts the heat conduction unit 2 and the heat dissipation unit 1 , and the heat conduction unit 2 adopts a high-efficiency heat plate to dissipate the heat of the plane LDE light board 15 and the liquid crystal screen 7 . The planar LDE light plate 15 selects an ultraviolet light source with a wavelength of 375-405NM.

Embodiment 3

[0046] As another embodiment, the printing platform 11 is a hollow or solid structure, its side view is a rectangular structure, the upper surface is a whole plane, and the bottom plate of the printing platform 11 is also a whole plane, which is used for bonding the printed product top. The upper surface of the printing platform 11 is provided with 4 pull-up threaded holes.

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Abstract

A high precision light-cured resin molding 3 D (three dimensional) printer comprises a LED (light-emitting diode) light source, an optical lens is arranged between the periphery of the LED light source and a Fresnel lens on the upper part, the size of the Fresnel lens can cover a LCD screen, the LCD screen is arranged in a LCD screen outer frame, and the upper surface of the LCD screen and the upper surface of the LCD screen outer frame are horizontal; a liquid storage tank is placed just above the LCD screen by a liquid storage tank fixing frame; a liquid storage tank bottom plate is a plastic film material, and is tensioned; and the liquid storage tank bottom plate is covered with a high light transmission release type membrane, the release type membrane is easy to be stripped from printed cured resin, liquid resin is stored in the liquid storage tank; a print platform is arranged on the upper part of the liquid storage tank, the upper surface of the print platform is connected with a fixed plate, the fixed plate is connected with a lifting arm, the lifting arm is fixed on a lifting column, and the lifting column is arranged on a lifting base. The high precision light-cured resin molding 3 D printer realizes the high precision and high efficiency 3D print, and has the advantages of compact structure, and small volume.

Description

technical field [0001] The invention relates to a 3D printer, in particular to a 3D printer formed by photocuring resin. Background technique [0002] At present, in the field of 3D printing, photo-curing liquid resin selective area curing molding technology is a branch of technology, because of its high precision and high efficiency, it will become the mainstream technology of desktop machines in the future. The existing photocuring printers are classified into: 1. Laser drawing imaging ultraviolet spectrum photocuring technology, 2. Projector image irradiation molding technology, and 3. Laser scanning imaging photocuring technology. Dozens of patents have been applied for in this field at home and abroad, among which the patent with the application number 201310417401.2 and the name "A Surface Forming 3D Printing Equipment" is the closest to the present invention. The specific structure of the patent application includes: It is used to hold liquid light-curing materials; ...

Claims

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Application Information

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IPC IPC(8): B29C67/00
Inventor 青泉阳烨
Owner UNIQUE MULTIDIMENSION DALIAN TECH
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