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Three-dimensional printing method based on fluid support

A three-dimensional printing and three-dimensional printer technology, applied in the field of three-dimensional printing, can solve the problems of increasing the production time of three-dimensional printing, comprehensive manufacturing cost, limiting the scope of materials, etc., so as to improve the printing yield, reduce the comprehensive cost, and reduce the printing and design experience requirements. Effect

Inactive Publication Date: 2018-11-23
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These additional steps increase the production time and overall manufacturing cost of 3D printing
At the same time, the current 3D printing technology also requires the processed materials to have high strength, so as to avoid the failure of printing due to force deformation under the action of its own weight, thus limiting the range of applicable materials

Method used

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  • Three-dimensional printing method based on fluid support
  • Three-dimensional printing method based on fluid support
  • Three-dimensional printing method based on fluid support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1. Add 4.7%-5.2% nano-scale hydrophilic silica to the benzyl silicone oil with a viscosity of 50-100cps and a refractive index of 1.460-1.480, and disperse it evenly with planetary stirring. After the stirring is completed, you can get Fluid Support Material 2. It is filled in a glass container 11, and the container 11 is put into a vacuum defoaming machine to remove the air bubbles in the fluid under vacuum conditions for use.

[0034] Step 2: Add a latent curing agent to the epoxy resin and mix it evenly with planetary agitation. After the agitation is completed, the printing material is obtained and poured into the syringe 12 for use.

[0035] Step 3. In this example, a direct-writing 3D printer using air pressure extrusion is used to slice the model 3 to be printed, generate G code, and copy it to the controller of printer 1 with a U disk.

[0036] Step 4. Place the container 11 containing the oily fluid on the platform of the printer 1, execute the G code and...

Embodiment 2

[0040] Step 1: Add 3%-5% magnesium lithium silicate nanopowder to the ultrapure water, disperse it evenly with needle tip ultrasound, and then let it stand for 24 hours until it is stable, and then obtain the supporting fluid 2 .

[0041] Step 2. Addition curing liquid silicone rubber is used to mix the two components, then add thickener and crosslinking retarder, and mix well with planetary stirring. After the stirring is completed, the printing material is obtained and poured into the syringe 12 to be used.

[0042] Step 3. In this example, a direct-writing 3D printer using air pressure extrusion is used to slice the model 3 to be printed, generate G code, and copy it to the controller of printer 1 with a U disk.

[0043] Step 4. Place the container 11 containing the support fluid 2 on the platform of the printer 1, execute the G code and use air pressure control to realize the continuous extrusion of silica gel, so that it can be printed smoothly in the hydrogel fluid and p...

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Abstract

The invention discloses a three-dimensional printing method based on fluid support. The printing method comprises the following steps that (1) a supporting fluid material is prepared, and then is putinto a container; (2) a three-dimensional model to be printed is sliced, and then a printer is used for printing a structure in the supporting fluid material in the step (1); (3) the structure which is printed in the step (2) is enabled to undergo post-curing in the supporting fluid material; and (4) after curing is completed, the printed structure is taken out by using a colander. According to the printing method, a supporting structure does not need to be designed and machined additionally, therefore, the structure range suitable for printing processing can be expanded, the printing yield isincreased, the post-processing process is simplified, and the printing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional printing, and in particular relates to a three-dimensional printing method using fluid as a supporting material. Background technique [0002] The 3D printing technology based on additive manufacturing is a new processing and manufacturing technology in recent years, which has revolutionary significance. After decades of development, the current three-dimensional molding technology is relatively mature, mainly including the following types: material extrusion molding, light curing molding, powder coating laser sintering molding, etc. [0003] The principle of the current 3D printing technology is mainly to print materials into two-dimensional graphics, and form various three-dimensional structures by vertically accumulating and stacking layer by layer. Due to the self-weight of the material, 3D printing technology requires an additional support when manufacturing overhanging structures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106B29C64/255B33Y10/00B33Y30/00
CPCB29C64/106B29C64/255B33Y10/00B33Y30/00
Inventor 王佳辰孔德圣
Owner NANJING UNIV
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