Multi-material micro-scale 3D printing device and printing method thereof

A 3D printing, micro-scale technology, applied in the field of additive manufacturing, to achieve the effect of simple production, material saving and cumbersome preparation process

Inactive Publication Date: 2017-09-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrojet printing has a wide range of material applicability (from insulating polymers to conductive polymers, from suspensions to single-walled carbon nanotube solutions, from metal materials, inorganic functional materials to biological materials, etc.), high-resolution printing The outstanding advantages of viscous liquid, low cost and simple structure make it have outstanding potential in multi-material micro-scale 3D printing. However, the existing multi-material electrojet printing is mainly based on multi-nozzle and single-nozzle active mixing technology. Insufficiency of multi-nozzle and single-nozzle active hybrid 3D printing

Method used

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  • Multi-material micro-scale 3D printing device and printing method thereof
  • Multi-material micro-scale 3D printing device and printing method thereof
  • Multi-material micro-scale 3D printing device and printing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a typical implementation of the present application, such as figure 1 As shown, a multi-material micro-scale 3D printing device is provided; including an electrohydrodynamic nozzle system and a working platform for mixing and printing a variety of materials;

[0036] The nozzle system includes a feeding device, a micro-mixing device, an ultraviolet curing lamp and a micro-nozzle, and the feeding device is provided with several micro-injection pumps and several feeding pipelines; the micro-mixing device is provided with A passive micro-mixer for effective mixing of materials with a high viscosity difference; the passive micro-mixer includes a liquid inlet flow channel, a mixing flow channel and a liquid outlet flow channel, and the number of the liquid inlet flow channels is not less than two, of which It is connected with the feeding pipeline of the feeding device, and the mixing flow channel is selected to have a flow channel structure that can effectively micro-mix...

Embodiment 2

[0044] figure 2 It is a schematic diagram of the principle of the passive micro-mixer in the nozzle system of the present invention, mainly including the liquid inlet flow channel 14, the mixing flow channel 15, and the liquid outlet flow channel 16; among them, multiple liquid inlet flow channels 14 can be selected to realize a variety of materials Micro-mixing, the mixing channel 15 selects a micro-mixer that can effectively mix high-viscosity difference liquids to achieve multi-ratio mixing of various materials, especially materials with different physical properties, such as the selection of mixing channels using sudden expansion The effect breaks the pressure balance at the fluid contact surface, and combines the split-recombination structure to induce the global fluid disturbance of the passive micro-mixer. The liquid outlet channel is connected to the micro-nozzle to provide micro-mixed and uniform micro-printed materials.

Embodiment 3

[0046] image 3 It is a schematic diagram of the preparation process of a micro-scale three-dimensional functionally graded structure device. First, the relevant software is used to optimize the gradient distribution of the material; then, the orthogonal experiment method is used to study the matching rules of the process parameters of mixed polymer micro-mixing, electrospray printing and deposition molding , set the relevant process parameters of each process; finally, multi-material micro-scale 3D printing is used to realize the preparation of micro-scale three-dimensional functionally graded structure devices. Specific steps are as follows:

[0047] Step 1: Perform cleaning and hydrophobic / hydrophilic coating treatment on the printed substrate 5. After cleaning the printed substrate, change its wetting characteristics by hydrophobic or hydrophilic treatment to realize the bottom surface morphology of the three-dimensional microstructure device. Effective control;

[0048]...

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Abstract

The invention discloses a multi-material micro-scale 3D printing device and printing method. The multi-material micro-scale 3D printing device comprises an electric fluid power nozzle system used for mixing and printing various materials. The nozzle system comprise a feeding device, a micro-mixing device, ultraviolet light curing lights and a micro-nozzle. The feeding device is provided with a plurality of micro-injection pumps and feeding pipelines. A passive micro-mixer used for effectively mixing the high-viscosity-difference materials is arranged in the micro-mixing device and comprises two or more fluid inlet flow channels, a mixing flow channel and a fluid outlet flow channel. The two or more fluid inlet flow channels are connected with the feeding pipelines of the feeding device. The mixing flow channel is of a flow channel structure capable of effectively micro-mixing high-viscosity-difference fluids and other fluids. The fluid outlet flow channel is connected with the micro-nozzle. The ultraviolet light curing lights are mounted around an outlet of the micro-nozzle.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a multi-material microscale 3D printing device and a printing method thereof. Background technique [0002] At present, with the development of micro-nano technology, complex three-dimensional microstructures have a wide range of applications and demands in the fields of micro-nano electromechanical systems, microfluidic chips, micro-optical devices, printed electronics, metamaterials, and functionally graded materials. However, existing micro-nano manufacturing technologies such as optical lithography, electron beam lithography, laser microfabrication, soft lithography, and nanoimprint lithography are difficult to realize true three-dimensional micro-scale complex structures (only two-dimensional and 2.5-dimensional micro-scale structure), and these manufacturing technologies have problems such as high cost, long cycle time, and single material. Micro-scale 3D ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/112B29C64/314B29C64/336B29C64/282B33Y30/00B33Y40/00
CPCB33Y30/00B33Y40/00
Inventor 朱晓阳兰红波钱垒王赫赵佳伟杨建军
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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