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Multi-material photocuring 3D printing equipment

A 3D printing and light-curing technology, applied in the field of 3D printing, can solve the problems of limiting the types of 3D printing materials, easy cross-contamination of 3D printing materials, and limiting the forming size, etc., to improve the precision and quality of light-curing forming, and avoid interlayer Effect of poor binding and mechanical mismatch, avoiding cross-contamination

Pending Publication Date: 2021-08-31
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-resin tank design of the above patent application has the following outstanding problems: (1) The number of resin tanks limits the types of 3D printing materials (generally no more than four); (2) 3D printing materials in different resin tanks are extremely prone to cross-contamination; ( 3) The size of the resin tank limits the forming size, making it difficult to form large-sized parts; (4) The design of the resin tank limits the state of the 3D printing material (usually a low-viscosity polymer resin material), which is difficult to apply to high Viscosity paste (such as ceramic paste)
The above problems seriously restrict the application and promotion of multi-material photo-curing 3D printing technology

Method used

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  • Multi-material photocuring 3D printing equipment

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Embodiment 1

[0037] Such as figure 2As shown, in the embodiment of the present invention, different types of materials can be coated on a two-dimensional plane through the integrated nozzle extrusion mechanism, and the extruded material (low-viscosity slurry or high-viscosity paste material) can be evenly moistened by the scraper 31. Wet spreading, and then adjusting the UV curing parameters to obtain a matching light curing effect, so that multiple materials in the two-dimensional plane can be cross-linked and cured at the same time, and a multi-material part blank with high mechanical stability can be formed in one piece. The invention can coat a variety of UV curable materials (including polymers, ceramics, metals and composite materials) in a two-dimensional plane, and can form super-large multi-material parts (the size of the formed part depends on the size of the forming platform).

Embodiment 2

[0039] Such as image 3 As shown, the embodiment of the present invention can achieve interlayer coating of different types of materials through the integrated nozzle extrusion mechanism, and the extruded material (low-viscosity slurry or high-viscosity paste material) can be evenly wetted and spread by the scraper 31 , and then optimize the light curing effect by real-time adjustment of UV light source parameters to enhance the interface bonding performance between layers of heterogeneous materials, and form a multi-material part green body with high interface bonding performance in an integrated manner. The invention can realize the overall manufacturing of homogeneous and heterogeneous gradient material parts compounded by various materials such as polymer, ceramic, metal and composite materials thereof.

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Abstract

The invention discloses multi-material photocuring 3D printing equipment, and belongs to the technical field of 3D printing. The multi-material photocuring 3D printing equipment comprises a forming platform, an integrated nozzle extrusion mechanism, a coating spreading mechanism and a photocuring mechanism, wherein the integrated nozzle extrusion mechanism is arranged above the forming platform, comprises a plurality of extrusion nozzles and a plurality of charging barrels corresponding to the extrusion nozzles, discharge ports of the charging barrels communicate with the extrusion nozzles through conveying pipes, the coating spreading mechanism is arranged on one side of the forming platform, and the photocuring mechanism is arranged above the forming platform; and different kinds of printing materials are sequentially stacked on the forming platform through the plurality of extrusion nozzles, the stacked printing materials are evenly spread through the coating spreading mechanism, and the photocuring mechanism provides a light source for curing the printing materials and enables the printing materials to be polymerized and formed by adjusting a light path. The multi-material photocuring 3D printing equipment can achieve integral manufacturing of large-size multi-material parts, is easy to operate, can avoid mutual pollution of different materials, is high in interface bonding performance of formed heterogeneous materials, and is suitable for preparing heterogeneous and multi-level structure heterogeneous materials.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and more specifically relates to a multi-material photocuring 3D printing device. Background technique [0002] 3D printing (that is, additive manufacturing) technology is based on the principle of discrete accumulation, driven by the three-dimensional data of parts, and directly manufactures parts "bottom-up" through the method of accumulating materials layer by layer, breaking through the traditional technology in forming complex structural parts. bottleneck. Among them, photocuring 3D printing technology based on the principle of ultraviolet photopolymerization of photosensitive polymers has significant advantages in the manufacture of complex and fine structures. In recent years, it has become one of the most potential technical means for manufacturing high-precision, high-performance polymer and ceramic lamp parts. [0003] At present, more and more stringent service conditions often re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106B29C64/112B29C64/124B29C64/209B29C64/214B29C64/268B29C64/20B33Y10/00B33Y30/00
CPCB29C64/106B29C64/112B29C64/124B29C64/209B29C64/214B29C64/268B29C64/20B33Y10/00B33Y30/00
Inventor 闫春泽陈安南程立金陈双王长顺史玉升吴甲民李晨辉
Owner HUAZHONG UNIV OF SCI & TECH
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