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Overflow type high-precision rapid stereolithographic 3D printer capable of realizing shaping in liquid bath

A 3D printer and internal molding technology, which is applied in the direction of additive processing, etc., can solve the problems of complex coating and sealing operations, inability to control the thickness of resin coating, and inability to realize rapid prototyping, etc., to achieve fewer processes and maintain a stable liquid level Effect

Active Publication Date: 2015-12-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A coating type SLA3D printer announced by Chinese patent (CN104890242A), which includes a light source device, a computer control device, a resin coating tank, a resin box, and a molding platform, wherein the light source device is arranged under the resin coating tank to control the resin coating tank. For irradiation, the resin box and molding platform are set above the resin coating tank, and the computer control device controls the horizontal movement of the resin coating tank and the lifting of the molding platform, but the thickness of the resin coating cannot be controlled, and each coating and sealing operation is complicated , cannot achieve rapid prototyping

Method used

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  • Overflow type high-precision rapid stereolithographic 3D printer capable of realizing shaping in liquid bath
  • Overflow type high-precision rapid stereolithographic 3D printer capable of realizing shaping in liquid bath
  • Overflow type high-precision rapid stereolithographic 3D printer capable of realizing shaping in liquid bath

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Embodiment approach 1

[0021] Implementation mode one: if figure 1 As shown, the 3D printer with convenient, fast and high-precision printing of the present invention includes an overflow part, a drive component part and an ultraviolet component, and these components are fixed on the frame 6 . The overflow part includes a liquid inlet buffer device 7, a peristaltic pump 8, a liquid container 10, and an overflow pipe 11. The liquid inlet buffer device 7 is connected with the liquid inlet hole at the bottom of the liquid tank 2 through a screw thread pair, And the liquid tank 2 is arranged on the intermediate partition 30; the other end of the liquid inlet buffer device is connected to the output port of the peristaltic pump 8 through a conduit, and the interface is a pagoda joint; the input end of the peristaltic pump 8 passes through the conduit 22 and the liquid The bottom of the bottle 10 is connected, and the bottom of the liquid holding bottle 10 is connected with a conduit 22 and the lower end ...

Embodiment approach 2

[0023] Embodiment 2: According to the design of a fast and high-precision 3D printer described in Embodiment 1, a projector is used to irradiate ultraviolet rays in the cured and formed ultraviolet components. But relatively speaking, the use of laser irradiation can improve the accuracy and molding speed to a greater extent. That is to replace the projector with a laser device. Specifically, the laser emitter emits laser light on the vibrating mirror, and the vibrating mirror converts the electrical signal into curing light through high-frequency scanning to achieve molding and curing.

Embodiment approach 3

[0024] Embodiment 3: According to the above embodiment, the overflow assembly can be replaced in terms of the functional requirements of adjusting the liquid level balance, and the float liquid level regulator is connected to the liquid bottle. The liquid bottle is in the long-open state. When the liquid level is low At the height of the required liquid level, the valve opens to inject the liquid into the liquid bottle; when the liquid level exceeds the demand, it flows from the overflow pipe to the liquid bottle again to achieve the leveling of the liquid level. This method does not need to put the liquid Keep pouring into the tank.

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Abstract

The invention provides an overflow type high-precision rapid stereolithographic 3D printer capable of realizing shaping in a liquid bath. The printer comprises a driving assembly, an overflow part and a stereolithographic assembly. The driving assembly is such configured that a motor drives rotation of a lead screw via a shaft coupling, then a spring nut cooperated with the lead screw drives a junction plate to move, and the junction plate moves up and down via two linear bearings sleeving optical shafts and then drives simultaneous movement of a shaping plate via connecting rods. The overflow part such configured that a peristaltic pump slowly sends a liquid in an external liquid holding bottle into the liquid bath via a conduit and the liquid over a prescribed surface in the liquid bath flows back to the liquid holding bottle through an overflow pipe so as to realize stabilization of a liquid level. The stereolithographic assembly is such configured that a projector fixed by a top fixed plate irradiates ultraviolet light rays onto the liquid level in the bottom liquid bath directly via an object plate so as to meet work demands. The overflow type high-precision rapid stereolithographic 3D printer has high precision and a fast speed.

Description

technical field [0001] The invention relates to a 3D printer, in particular to an overflow type high-precision and fast light-curing 3D printer formed in a liquid tank, belonging to the field of 3D printers. Background technique [0002] There are currently four types of 3D printers used in the market: fusion deposition, fusion fiber, fusion filament manufacturing and light curing. 3D printers can superimpose printing materials such as metals, ceramics, plastics and resins layer by layer, and finally turn the design drawings in smart electronic devices (such as computers or servers) into real objects. The 3D objects printed by 3D printers can be molds, dolls, food, and machine parts with high precision requirements. [0003] The printer based on the first three principles is a kind of 3D printer that is widely used and mature in technology. However, this type of printer is formed by layered accumulation, which determines that it is difficult for this forming technology to p...

Claims

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Application Information

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IPC IPC(8): B29C67/00B33Y30/00
Inventor 陈东良陈磊汪永远庄博刘冲李宁杰王博张志远周凯邵兆稳
Owner HARBIN ENG UNIV
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