A multi-faceted LCD light source 3D printing device with one-time molding
A 3D printing and light source technology, applied in the field of 3D printing, can solve the problems of slow LCD printing speed, low precision, and small size of DLP one-time forming printing, and achieve the effect of low cost
Active Publication Date: 2022-02-22
JILIN UNIV
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Problems solved by technology
[0006] The present invention proposes a multi-faceted LCD light source 3D printing device for one-time molding, which is used to solve the problems of slow printing speed of existing LCD, small printing size and low precision of DLP one-time molding, and can take advantage of both advantages at the same time, and can print out instantly Higher precision, larger prints
Method used
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Embodiment 1
[0028] Such as figure 1 As shown, in this embodiment, a multi-faceted LCD light source 3D printing device formed at one time mainly includes: a support frame, a light source system, a projection device and a motion mechanism of the projection device.
[0029] Described light source system is made up of UV light source 1, convex lens 2, support bar 3, Fresnel lens 4, lower polarizing film 5, LCD display screen 6 and upper polarizing film 7, wherein Fresnel lens 4, lower polarizing film 5, The LCD display screen 6 and the upper polarizing film 7 are stacked sequentially from bottom to top to form a printing platform, and the printing platform is horizontally erected on the ground through the supporting frame 14, and the polarization angles of the lower polarizing film 5 and the upper polarizing film 7 are the same;
[0030] When the focal length of the convex lens 2 is f, the distance between the LCD display screen 6 and the convex lens 2 is greater than 2f, and the distance bet...
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The invention discloses a multi-faceted LCD light source 3D printing device formed at one time, which includes a support frame, a light source system, a projection device and a motion mechanism of the projection device. The light source system includes a UV light source, a convex lens, and a Fresnel lens arranged in sequence from bottom to top. , Lower polarizing film, LCD display and upper polarizing film. Among them, the Fresnel lens, the lower polarizing film, the LCD liquid crystal display and the upper polarizing film form the printing platform, the photosensitive resin tank is set on the printing platform, the LCD display shows the three-view information of the printed part, and the place to be printed is on the LCD display There is a selective transparent area on the surface, and in other areas without image display, the ultraviolet light is blocked, and the light emitted by the light source system is sorted out and then transmitted to the photosensitive resin tank through the projection device, realizing the combination of LCD light curing 3D printing technology and The printing technology combined with one-time molding 3D printing technology combines the high precision of LCD printing with the high efficiency of one-time molding.
Description
technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a large-sized micro-nano LCD photocuring 3D printing device. Background technique [0002] A mainstream branch of 3D printing technology is photocuring printing technology, which uses the principle of photopolymerization and then curing after irradiating liquid photosensitive resin with ultraviolet light beams, so that materials can be accumulated point by point or layer by layer. Photocuring printing technology is mainly divided into SLA, DLP and LCD projection technology. Among them, SLA is called stereolithography technology, which uses a laser beam to quickly scan and irradiate the photosensitive resin point by point to make it solidified. SLA technology is also mainly used for molding photosensitive resin materials, which has the characteristics of wide application. DLP and LCD projection technology project the entire layer of images onto the photosensitive...
Claims
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IPC IPC(8): B29C64/264B29C64/135B33Y30/00B33Y10/00
CPCB29C64/264B29C64/135B33Y30/00B33Y10/00
Inventor 孙慧超耿浩棒陈少康杨家林吉翔宇
Owner JILIN UNIV