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A self-levelling inkjet 3D printing method

A 3D printing, 3D printer technology, applied in manufacturing, additive processing, liquid material additive processing, etc., can solve the problem of uneven product surface, achieve the effect of improving printing efficiency, clean and smooth appearance, and avoiding removal steps

Active Publication Date: 2019-01-15
北京彩韵数码科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an inkjet 3D printing method for automatic leveling. The printing layer has an automatic leveling effect because it is printed in a liquid state, which solves the problem of uneven product surfaces in the prior art, and because no support material is needed It can be formed, which greatly improves the printing efficiency. The injection material can be changed according to the needs during printing, and a part of the molding material does not need to pass through the nozzle, which expands the selection range of this part of the molding material

Method used

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  • A self-levelling inkjet 3D printing method
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  • A self-levelling inkjet 3D printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The technical solutions in the embodiments of the present invention are clearly and completely described below.

[0038] A self-levelling 3D inkjet printing material formulation blue jetting material comprising:

[0039] Colorant 2.9g:

[0040] Blue colorant (PENN COLOR 9S1494) 2.9g

[0041] Photoinitiator 7g:

[0042]

[0043] UV-curable unsaturated monomer 84g:

[0044]

[0045] The above blue jet material has a viscosity of 10 cp at 25°C and a surface tension of 20 dynes.

[0046] A self-levelling 3D inkjet printing material formulation comprising:

[0047] Colorant 6.7g:

[0048] Red colorant (PENN COLOR 9R1519) 6.7g

[0049] Photoinitiator 1g:

[0050] 1-Hydroxy-cyclohexyl-phenylmethanone 1g

[0051] UV-curable unsaturated monomer 75g:

[0052] Neopentyl glycol diacrylate 48g

[0053] Trimethylolpropane Triacrylate 27g

[0054] Surfactant 0.2g:

[0055] BYK3500 0.2g

[0056] The above red spray material has a viscosity of 25 cp at 25°C and a surf...

Embodiment 2

[0074] A jetting material of a formulation of a self-leveling 3D inkjet printing material comprises:

[0075] Photoinitiator 5.5g:

[0076] 1-Hydroxy-cyclohexyl-phenylmethanone 1g

[0077] Isopropylthioxanthone 2.5g

[0078] Bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide 2g

[0079] UV-curable unsaturated monomer 81.5g:

[0080] 2-Phenylbenzyl-2-dimethylamine-1-(4-morpholinebenzylphenyl)butanone 1.5g

[0081] Neopentyl glycol diacrylate 48g

[0082] Trimethylolpropane Triacrylate 32g

[0083] Surfactant 1g:

[0084] BYK3500 1g

[0085] The above sprayed material has a viscosity of 25 cp at 25°C and a surface tension of 50 dynes.

[0086] The preparation method of above injection material is:

[0087] In the dark, add the photoinitiator, UV-curable unsaturated monomer and surfactant into a stirring container according to the above weight, mix well under stirring, the stirring speed is 30 rpm, and then slowly Heating to 50°C for 30 minutes to fully dissolve the init...

Embodiment 3

[0102] A self-levelling 3D inkjet printing material formulation blue jetting material comprising:

[0103] Colorant 11.1g:

[0104] Black colorant (PENN COLOR 9B989) 11.1g

[0105] Photoinitiator 7g:

[0106]

[0107] UV-curable unsaturated monomer 88g:

[0108] Pentaerythritol Triacrylate 28g

[0109] Neopentyl glycol diacrylate 60g

[0110] Surfactant 1g:

[0111] BYK3500 0.1g

[0112] The above sprayed material has a viscosity of 50 cp at 25°C and a surface tension of 50 dynes.

[0113] The preparation method of above injection material is:

[0114] Preparation of black spray material: In the dark, add the photoinitiator, UV-curable unsaturated monomer and surfactant into a stirring container according to the above weight, and mix evenly under stirring at a stirring speed of 30 rpm, and then slowly heated to 60°C for 10 minutes to allow the initiator to fully dissolve and form a homogeneous mixture, then lower the temperature to about 30°C, and at a stirring spee...

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Abstract

The invention provides an automatic-leveling ink jet 3D printing method. Firstly, a mixture containing a photoinitiator and an ultraviolet curing material is added into an ink box of a 3D printer; a liquid trough is formed below a jet head of the printer; a height-adjustable supporting stand is arranged at the bottom in the liquid trough, the ultraviolet curing material is added into the liquid trough, and the plane of the supporting stand is initially set to be lower than the horizontal plane of liquid in the liquid trough; a model to be printed is input into the 3D printer for printing setting; and the printer is started, the material is jetted onto the supporting stand through the jet head and mixed with the liquid in the liquid trough in the supporting stand, ultraviolet irradiation is performed for forming, and a needed model is formed through sequential and repeated printing deposition. Printing is performed in the liquid state every time, and the liquid level can be automatically leveled or pushed to be even through motive power, so that the surface of an obtained product is smooth and flat, and the problem of uneven surfaces of products in the prior art is solved; and besides, forming can be achieved without a supporting material, so that the printing efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of inkjet printing, and in particular relates to an inkjet 3D printing method that can be automatically flattened. Background technique [0002] 3D printers have been in commercial use for about 30 years and are no longer new technology to professionals in the field. Over the past 30 years, it has been used by designers, engineers and scientists to create one-off mechanical products and models. With a 3D printer, we can build a model of any item we imagined in the computer, and turn it into a real object through the printer. Different types of 3D printing technologies have different molding principles and system characteristics due to the different molding materials used, but the basic principles are the same, that is, "layer-by-layer manufacturing, layer-by-layer superposition". At present, 3D printing technologies mainly include inkjet, volumetric molding and laser sintering. Inkjet 3D printing technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/106B33Y10/00
CPCB33Y10/00
Inventor 金荣侯光宇龙登莲
Owner 北京彩韵数码科技有限公司
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