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A method for removing 3D printing water-soluble support materials

A technology of 3D printing and support materials, which is applied in the direction of 3D object support structures, additive processing, metal processing equipment, etc., can solve the problems that the samples cannot meet the requirements, the support materials cannot be removed, and it is difficult to thoroughly clean the water-soluble support materials. Shorten the post-processing time of 3D printing, solve the visualization problem, and achieve the effect of small structure size

Active Publication Date: 2019-06-21
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the support material is mainly composed of soluble materials and uniformly arranged matrix materials, it has a certain strength and is not easy to be damaged. It is difficult to thoroughly clean the water-soluble support material by using a simple alkaline solution for dissolving and cleaning. Unable to clear, causing the sample to fail to meet the requirements

Method used

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  • A method for removing 3D printing water-soluble support materials
  • A method for removing 3D printing water-soluble support materials
  • A method for removing 3D printing water-soluble support materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Objet Connex350 from Stratasys was used to make 3D printing samples. The molding material was Vero Clear transparent photosensitive resin, the support material was grid Fullcure 706 water-soluble support material, and the grid density type was Lite.

[0051] Stir the alkali solvent, silicate solvent, active agent and water according to the ratio of 2:1:1:96 by weight to prepare a mixed solvent; at 25°C, place the 3D printed sample in the mixed solution and pass 40KHz ultrasonic waves The washing machine vibrates and cleans to ensure the structural destruction of the internal support material.

[0052] Then place the 3D printed sample in a mixed solution with a stirring speed of 10r / min. After soaking for 15 hours, the residue was blown out by 0MPa pressure gas, and finally cleaned repeatedly by a peristaltic pump for 60 hours to thoroughly clean the 3D printed support material.

[0053] For cleaning materials testing, before and after treatment, such as figure 1 and ...

Embodiment 2

[0055] Objet Connex350 from Stratasys was used to make 3D printing samples. The molding material was Vero Clear transparent photosensitive resin, the support material was grid Fullcure 706 water-soluble support material, and the grid density type was Standard.

[0056] Stir the alkali solvent, silicate solvent, active agent and water according to the weight ratio of 2:1:1:96 to prepare a mixed solvent; at 0°C, place the 3D printed sample in the mixed solution and pass 40KHz ultrasonic waves The washing machine vibrates and cleans to ensure the structural destruction of the internal support material.

[0057] Then place the 3D printed sample in a mixed solution with a stirring speed of 200r / min. After soaking for 20 hours, the residue is blown out by a gas pressure of 0.4MPa. Finally, the 3D printed support material can be thoroughly cleaned by a peristaltic pump for 68 hours. .

[0058] For cleaning materials testing, before and after treatment, such as image 3 and Figure...

Embodiment 3

[0060] Objet Connex350 from Stratasys was used to make 3D printing samples. The molding material was Vero Clear transparent photosensitive resin, the support material was grid Fullcure 706 water-soluble support material, and the grid density type was Heavy.

[0061] Stir the alkali solvent, silicate solvent, active agent and water according to the weight ratio of 2:1:1:96 to prepare a mixed solvent; at 30°C, place the 3D printed sample in the mixed solution and pass 40KHz ultrasonic waves The washing machine vibrates and cleans to ensure the structural destruction of the internal support material.

[0062] Then place the 3D printed sample in a mixed solution with a stirring speed of 500r / min. After soaking for 24 hours, the residue is blown out by a gas pressure of 0.8MPa. Finally, the 3D printed support material can be thoroughly cleaned by a peristaltic pump for 72 hours. .

[0063] For cleaning materials testing, before and after treatment, such as Figure 5 and Figure ...

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Abstract

The invention relates to the technical field of 3D printing post-processing, in particular to a method for removing 3D printing water-soluble support materials. A method for removing 3D printing water-soluble support materials, comprising the following steps: 3D printing samples are placed in a mixed solution, ultrasonically treated; soaked in a vortex, and then air pressure blows out the residue; cleaning and drying are enough; the mixed solution is an alkali A mixed solution of a solvent, a silicate solvent, an active agent and water, wherein the mass ratio of the alkali solvent, the silicate solvent, the active agent and the water is 1.5-3:0.8-1.5: 0.8‑1.5: 95‑97. The method has the characteristics of low environmental requirements, simple operation, low cost, high efficiency, and does not damage the precision and surface properties of the photosensitive resin molding material.

Description

technical field [0001] The invention relates to the technical field of 3D printing post-processing, in particular to a method for removing 3D printing water-soluble support materials. Background technique [0002] 3D printing technology, that is, additive technology, is realized through digital file formats (such as STL) and material printers. 3D printing technology can personalize precision models such as multi-curved surfaces, asymmetry, and complex structures. It has the advantages of low cost, short cycle, high precision, and strong reproducibility. It has been widely used in biomedicine, aerospace, and cultural creativity. , industrial models, geological models, petrochemical and other fields. The general preparation process of 3D printing technology is: (1) 3D design. Through three-dimensional scanning or computer modeling software modeling, establish a three-dimensional data model, and "slice" the three-dimensional data model in a certain way, and guide the computer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/35B29C64/379B33Y40/00
CPCB29C64/35B29C64/379B33Y40/00
Inventor 杨伟张东晓雷刚王会杰
Owner PEKING UNIV