High-speed continuous photocuring type 3D printing device and working method thereof

A 3D printing and light curing technology, applied in manufacturing auxiliary devices, 3D object support structures, manufacturing tools, etc., can solve the problem of affecting light efficiency and quality of formed parts, oxygen and ultraviolet light permeable Teflon materials are expensive and printing. Speed ​​and quality limitations, etc., to solve the problem of rapid resin reflow in large areas, realize rapid resin replenishment, and achieve high-speed continuous printing.

Active Publication Date: 2017-02-22
SHENZHEN ELEGOO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this point-by-point scanning photocuring method has the following disadvantages: the forming efficiency is low (about 8~12x10 4 mm 3 /h); there is a large shrinkage during curing, and the workpiece is warped
[0005] (1) The oxygen-permeable and UV-permeable Teflon materials used are very expensive and require special manufacturing processes
[0006] (2) When the photosensitive resin undergoes a cross-linking and curing reaction, a large amount of heat will be released, which will cause the temperature of the beam irradiation area to rise. Reduced, affecting light efficiency and quality of formed parts
[0007] (3) A large number of heat sources are released by CLIP high-speed continuous curing. The existing solutions cannot discharge and release the heat in a timely and effective manner. Therefore, the current forming workpiece of the CLIP process is limited to printing of smaller-sized objects (the heat generated by small-s

Method used

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  • High-speed continuous photocuring type 3D printing device and working method thereof
  • High-speed continuous photocuring type 3D printing device and working method thereof
  • High-speed continuous photocuring type 3D printing device and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] figure 1 It is a schematic diagram of the structure and principle of the high-speed continuous photocuring 3D printing device of Embodiment 1 of the present invention, figure 2 It is a three-dimensional view of the structure and principle of the high-speed continuous light-curing 3D printing device of Embodiment 1 of the present invention. Embodiment 1 The high-speed continuous light-curing 3D printing device includes: DLP optical machine 1, ultraviolet LED lamp 2, oxygen supply cooling unit 3, oil-free air compressor 4, cooling air intake pipeline 5, pressurized air intake pipeline 6, cooling outlet Air pipeline 7 , oxygen supply cooling chamber 8 , window box 9 , raw material supply unit 10 , chassis 11 , printing platform 12 , connecting bracket 13 , and Z-direction workbench 14 . The imaging unit consisting of the DLP optical machine 1 and the ultraviolet LED lamp 2 is located in the lower chamber of the chassis 11; the oxygen supply cooling unit 3 and the oil-fre...

Embodiment 2

[0077] Embodiment 2 The schematic diagram of the structure and principle of the printing device is as follows Figure 4 As shown, the liquid crystal display technology is used to generate a dynamic mask. Wherein imaging is made up of ultraviolet LED module group 19, Fresnel lens 20, liquid crystal display screen 21, and the ultraviolet light that ultraviolet LED module group 19 produces is after being collimated by Fresnel lens 20, irradiates on the liquid crystal display screen 21, and liquid crystal display screen 21 The display screen 21 plays the image information continuously, thereby generating the projected image required for curing.

Embodiment 3

[0079] As another embodiment, the cooling outlet pipeline 7 is set so that the outlet pressure can be adjusted. When the air pressure in the closed space formed by the oxygen supply cooling chamber 8 and the composite oxygen-enriched membrane 16 reaches a certain threshold, it can be discharged through the cooling outlet pipeline 7. By increasing the air pressure in the enclosed space, the rate of oxygen passing through the composite oxygen-enriched membrane is improved ability.

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Abstract

The invention discloses a high-speed continuous photocuring type 3D printing device and a working method thereof. The 3D printing device comprises a machine case body which is divided into an upper cavity and a lower cavity by a middle partition board, wherein an image forming module is arranged in the lower cavity, a window box and an oxygen supply cooling module are arranged in the upper cavity and are combined to be fixedly mounted on the middle partition board, the oxygen supply cooling module is arranged right below the window box, and the image forming module I is arranged right below the window box; a printing platform is arranged right above the window box and is mounted on a Z-direction worktable; and the window box is connected with a raw material feeding unit. The 3D printing device is integrated with the advantages of a compound oxygen-rich film, oxygen supply cooling and liquid surface auxiliary pressurization of the window box, so that the low-cost and efficient continuous printing of large-sized products with arbitrary shapes is realized, the range of applicable materials is wide, the printed products are high in precision and quality and good in uniformity, and the process is stable and reliable. An industrial-grade solution is provided for the high-speed continuous photocuring type 3D printing.

Description

technical field [0001] The invention relates to the technical fields of additive manufacturing and 3D printing, in particular to a high-speed continuous photocuring 3D printing device and a working method thereof. Background technique [0002] Stereolithography is the earliest, most mature, and most widely used additive manufacturing (3D printing) technology. After nearly 30 years of development, it has developed from the initial stereolithography (SL) to Many new processes, such as Microstereolithography, Integral SL, Projection Microstereolithography, Digital Light Processing (DLP) 3D printing, Continuous Liquid Interface Production , CLIP), two-photon polymerization laser direct writing 3D printing, etc. [0003] Traditional stereolithography is to use laser galvanometer or mask technology to control the illumination area, so that the resin is cured layer by layer in the controllable illumination area, and a three-dimensional solid model is generated after layer-by-layer...

Claims

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Application Information

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IPC IPC(8): B29C64/129B29C64/30B29C64/291B29C64/307B33Y30/00
CPCB33Y30/00
Inventor 兰红波钱垒段玉岗李涤尘
Owner SHENZHEN ELEGOO TECH CO LTD
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