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Coaxial 3D printing process and equipment

A 3D printing, coaxial technology, applied in the field of 3D printing, can solve the problem of difficult to meet market demand, and achieve the effect of reducing the consumption of consumables, reducing the weight of products, and expanding the scope of application

Active Publication Date: 2019-01-11
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the market pays more and more attention to the field of low-carbon environmental protection, the demand for lightweight products is also becoming more and more significant. The current 3D printing lightweight approach has been difficult to meet market demand

Method used

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  • Coaxial 3D printing process and equipment
  • Coaxial 3D printing process and equipment

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Embodiment Construction

[0020] A kind of coaxial 3D printing equipment of the present invention, such as figure 1 As shown, it mainly includes piston 1, inner layer heating jacket 2, outer layer heating jacket 3, outer layer material channel 4, heat preservation jacket 5, annular airflow outlet sleeve 6, heat insulation layer 7 and piston barrel 8, and piston barrel 8 is placed Enter the inner layer material 10, the inner layer heating jacket 2 will heat and preheat the melted inner layer material 10, and the outer layer heating jacket 3 will heat and melt the outer layer material 9 located in the outer layer material channel 4, and the piston 1 will compress it during the printing process. The inner layer material 10 enters the range of the insulation cover 5; the outer layer material 9 is introduced into the outer layer material channel 4 through a piston extruder or a screw extruder; the insulation cover 5 is used to make the coaxial The material has good fluidity, so that it can be extruded smoot...

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Abstract

The invention provides a coaxial 3D printing process and equipment, which are used for printing different coaxial fuse wires of inner and outer materials through coaxial nozzles. According to the process, the outer layer is a main use layer and determines the mechanical performance of a product; the inner layer for extruding wire materials is an assistant forming layer, the section of the extrudedouter layer annular material is prevented from collapsing; the assistant forming layer can be made of a material with relatively small relative volume density or a material which can be removed later; the outer layer is a performance guarantee layer, the section of a coaxial wire material can be similar to an annulus during performance analysis, and the strength of a product with an annular section is better than that of a product with a round section when the section areas are the same according to theoretically mechanic analysis, so that the strength of the product manufactured by the process and equipment under the situation that weight is not changed, and further light weight of 3D printing technology can be realized. The process and equipment can be used for optimizing product performance, such as fire-proof products, anticorrosive products and performance enhanced products to meet the requirement of different use conditions, so that the application range of 3D printed products can be expanded.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a coaxial 3D printing process and equipment. Background technique [0002] 3D printing technology is widely used in many aspects such as mold manufacturing, industrial design, construction, household products and medical treatment. This technology can print out products according to the requirements. At present, the measures to realize the lightweight of 3D printing products mainly include optimizing the original structure of the product or changing the filling ratio of the product in the horizontal direction, and have not directly optimized the structure of the filament itself, which is the smallest component unit of 3D printing. [0003] One of the existing 3D printing technology's countermeasures for lightweight is to reduce the filling ratio in the XY plane to save materials under the premise of meeting the technical requirements (the discussion in this invention puts the product i...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/205B33Y30/00
CPCB29C64/118B29C64/205B33Y30/00
Inventor 杨卫民马昊鹏王修磊阎华焦志伟丁玉梅
Owner BEIJING UNIV OF CHEM TECH
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