Multi-Line 3D Printing Device for Material Segregation
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Solution Overview
Problem
Current 3D printing technologies face challenges in preventing mixing of materials between layers and controlling material distribution, especially when using multiple materials, which limits the precision and complexity of multi-layer objects.
Innovation Solution
A 3D printing device with a material transfer unit, thickness control unit, and 3D printing module that allows selective injection and solidification of materials on multiple lines, accompanied by a material processing module for washing and drying to prevent mixing and enhance layer separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single line film supply method is used for photopolymerization printing, then the device complexity is reduced, but the manufacturing precision deteriorates due to inability to prevent material mixing and control material distribution
Solution Approach 1:
The film supply system is segmented into multiple independent lines (first line, second line, etc.), each capable of supplying different photopolymerization materials. This segmentation allows independent control of material flow on each line, preventing mixing while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
Different regions of the film supply system are assigned different material types based on local requirements. Each line is configured with specific material properties (viscosity, composition, curing characteristics) suited for particular printing zones, enabling precise material distribution control without requiring complete system redesign.
2Productivity
If multiple materials are supplied without washing and drying processes, then the productivity is improved, but the manufacturing precision deteriorates due to material mixing between layers
Solution Approach 1:
Washing and drying processes are performed as preliminary actions between material transitions on the film supply lines. These pre-treatment steps prepare the substrate before the next material is applied, ensuring clean layer separation while maintaining high productivity through automated, rapid processing cycles.
Solution Approach 2:
The washing and drying processes act as intermediary steps between different material applications. These intermediary processes remove residual materials from previous layers and prepare the surface for optimal adhesion of subsequent materials, preventing mixing while enabling continuous high-speed printing.
3Productivity
If film supply in continuous line is used, then the productivity is improved through continuous material supply, but the manufacturing precision deteriorates without proper thickness control
Solution Approach 1:
The film supply system incorporates dynamic thickness control mechanisms that can adjust material flow rates, film tension, and deposition speed in real-time during continuous printing. This dynamic adjustment maintains uniform layer thickness despite variations in printing speed and material properties, enabling both high productivity and precision.
Solution Approach 2:
The system controls layer thickness by changing key parameters including film supply speed, material viscosity, and deposition pressure. These parameter adjustments are made dynamically during continuous operation to maintain consistent thickness uniformity across different printing conditions and material types.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the formation of multi-layer objects with precise control over material distribution, preventing mixing between layers and reducing printing time, while allowing for easy separation of the final object from the device.
Implementation Method 1
a 3D printing module for solidifying the photopolymerization materials
Implementation Method 2
a material transfer unit comprising a first line and a second line; a material supply unit for supplying different photopolymerization materials on the lines, respectively
Implementation Method 3
a thickness control unit for controlling thickness of the photopolymerization materials supplied by the material supply unit
Data Source
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AI summary
The present invention relates to a 3D printing device for multiple materials comprising: a material transfer unit (1100) comprising at least two lines (1100a, 1100b); a material supply unit (1200) to supply at least one type of printing material on each line of the material transfer unit; a thickness control unit (1300) to control a thickness of a material supplied by the material supply unit; a 3D printing module (1400) to solidify the material controlled with the thickness by the thickness control unit to a predefined shape to solidify the material on one line and to move to the other line so as to solidify the material on the other line; a material processing module (1500) to perform washing or drying for the material solidified by the 3D printing module; and a collecting module (1600) to collect the printing material unused during the printing.