3D Printing Build Area Geometry Optimization
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Solution Overview
Problem
The geometry and dimensioning of the build area in existing 3D printing machines are not optimally selected, leading to suboptimal process speed, cost-effectiveness, and quality issues in high-speed sintering and laser sintering processes.
Innovation Solution
A 3D printing device with a build area characterized by a size ratio Y>X>Z, where Y:X is between 1.1 to 3.0, optimized for high-speed sintering or laser sintering processes, incorporating a double-cooled sintering assembly with a closed air-cooling circuit coupled to a fluid-based cooling circuit for improved temperature management and process efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the build volume is increased to produce larger parts, then the part size capability is improved, but the build volume speed decreases leading to longer processing times
Solution Approach 1:
The patent applies dynamics by making the build area geometry adjustable and adaptable. The build area is configured with specific dimensional ratios (Y:X between 1.1 to 3.0) that can be optimized for different part sizes while maintaining efficient processing. This allows the system to dynamically adapt its effective build volume to match the specific requirements of each job, rather than being constrained by a fixed geometry that compromises either size or speed.
Solution Approach 2:
The patent changes the geometric parameters of the build area, specifically establishing that the Y dimension should be 1.1 to 3.0 times the X dimension. This parameter optimization enables the system to achieve both larger build volumes and maintained build volume speeds by altering the fundamental dimensional relationships of the build space, rather than simply scaling all dimensions uniformly.
2Productivity
If the build area geometry is optimized for high-speed sintering, then the process speed is improved, but temperature management becomes more challenging
Solution Approach 1:
The patent applies segmentation by dividing the temperature management system into multiple independent cooling circuits. A first closed cooling air circuit and a second fluid-based cooling circuit are implemented, each handling different aspects of thermal control. This segmentation allows high-speed sintering to proceed efficiently while temperature management is distributed across multiple specialized systems, preventing any single point from becoming a bottleneck.
Solution Approach 2:
The patent introduces cooling air and cooling fluid as intermediary substances between the sintering process and the environment. These intermediaries absorb and transport heat away from the build area, enabling high-speed sintering to occur without compromising temperature management. The cooling air circuit handles immediate thermal control during sintering, while the fluid-based circuit provides additional thermal regulation capacity.
3Loss of time
If the build area dimensions are increased to reduce the number of layers, then the layer count is reduced, but the surface area to volume ratio decreases affecting cooling efficiency
Solution Approach 1:
The patent employs pneumatic (cooling air circuit) and hydraulic (cooling fluid circuit) systems to enhance cooling efficiency in the optimized build area geometry. These fluid-based cooling systems compensate for the reduced surface area to volume ratio by providing active, high-capacity heat removal pathways, allowing larger build volumes with fewer layers to be cooled efficiently despite the geometric constraints.
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
This configuration optimizes process times, improves temperature management, and enhances the cost-effectiveness and quality of the 3D printing process, allowing for the conservation and recycling of non-sintered particle material.
Implementation Method 1
a double-cooled sintering assembly with a closed air-cooling circuit coupled to a fluid-based cooling circuit for improved temperature management
Data Source
AI summary
The invention relates to a 3D printing device having an advantageous geometry of the build area.