A device and method for continuously replenishing DLP photocuring with natural flow

A light-curing device and natural flow technology, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve the problems of slow continuous molding speed and limit the development of DLP light-curing technology, and achieve the effect of saving production time

Active Publication Date: 2019-10-18
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Although DLP photo-curing technology has developed rapidly and has been widely used in industries, transportation, molds, and medical fields, the current continuous molding rate of DLP photo-curing molding equipment is slow.
Limits the further development of DLP light curing technology

Method used

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  • A device and method for continuously replenishing DLP photocuring with natural flow
  • A device and method for continuously replenishing DLP photocuring with natural flow
  • A device and method for continuously replenishing DLP photocuring with natural flow

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Embodiment

[0027] Such as Figures 1 to 4 shown. The invention discloses a natural flow continuous supplementary DLP photocuring device, which includes an inclined resin trough 10, a molding platform 11 that can move up and down correspondingly arranged directly above the resin trough 10, and a resin set at the high end of the resin trough 10. Supplementary device 3, a photosensitive resin storage device 8 arranged at the lower end of the resin tank 10, a DLP projector 4 arranged below the resin tank 10;

[0028] A resin circulation device 9 is provided between the photosensitive resin storage device 8 and the resin replenishment device 3, and the resin circulation device 9 is used to circulate and transport the photosensitive resin in the photosensitive resin storage device 8 to the resin replenishment device 3;

[0029] Between the high-end side plate and the low-end side plate of the resin trough 10 and the bottom surface of the resin trough 10, there are parallel passages for the fl...

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Abstract

The invention discloses a natural flow and continuous supplement digital light processing (DLP) light curing device and method. The device comprises an oblique resin trough, a forming platform which is correspondingly arranged over the resin trough and can move up and down, a resin supplementing device arranged at the high end of the resin trough, a photosensitive resin storage device arranged at the lower end of the resin trough, and a DLP projector arranged below the resin trough. A parallel channel for photosensitive resin to flow is formed between a high end side plate of the resin trough and the bottom face of the resin trough in parallel, and a parallel channel for the photosensitive resin to flow is formed between a lower end side plate of the resin trough and the bottom face of the resin trough in parallel. The photosensitive resin in the resin supplementing device flows along the whole bottom face of the resin trough under the action of gravity, and a thickness uniform photosensitive resin layer is formed on the whole bottom face of the resin trough. The device is easy and convenient to operate, and constant supplementing and continuous forming of the resin material are achieved. Compared with an ordinary DLP printer, the device and method have the beneficial effects that the waiting time for resin back flowing is shortened, and the DLP light curing manufacturing speed is increased.

Description

technical field [0001] The invention relates to the field of rapid prototyping of DLP light-cured photosensitive resins, in particular to a device and method for continuously supplementing DLP light-cure with natural flow. Background technique [0002] Digital Light Processing (DLP) molding technology is a kind of additive manufacturing technology and the latest development technology of rapid prototyping technology. In this technology, the 3D model of the part needs to be sliced ​​and processed on the main control system to divide the 3D model into a series of 2D plane images, and then control the DLP projection system to realize the projection of the images. The cross-sectional graphics are generated by each lens corresponding to each pixel on the current material layer. This pattern is projected onto the surface of the UV-curable liquid photosensitive resin through a digital micromirror device (DMD), and is cured or hardened at the pixel position. At the same time, cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/124B29C64/20B29C64/321B33Y10/00B33Y30/00B33Y40/00
Inventor 宋长辉林康杰杨永强彭乔忠王迪
Owner SOUTH CHINA UNIV OF TECH
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