Ring-Shaped Material Supply for Uniform Large-Scale 3D Printing
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Solution Overview
Problem
Existing additive layer production methods face inefficiencies and quality issues, particularly when producing large workpieces, as they often struggle to maintain high quality and efficiency.
Innovation Solution
The apparatus includes a process chamber with a ring-like material supply unit, a multi-wall structure, and a gas supply system, allowing for omnidirectional material distribution and solidification, along with a positioning system and safety device to ensure precise positioning and safety during the additive layer construction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional additive layer production methods are used for large workpieces, then production efficiency can be improved, but workpiece quality deteriorates
Solution Approach 1:
The process chamber is divided into multiple independently controllable heating zones along the travel direction. Each zone can be heated to different temperatures simultaneously, allowing different regions of the workpiece to receive optimized thermal treatment. This segmentation enables high-speed processing while maintaining uniform quality across the entire workpiece by independently controlling parameters in each zone.
2Device complexity
If material supply is performed from a single direction, then device complexity is reduced, but material distribution uniformity deteriorates
Solution Approach 1:
The material supply unit employs an asymmetric ring-like structure with non-uniform material ejection ports distributed around the ring. The ports are positioned and sized differently to compensate for the directional movement of the process chamber, ensuring that material is deposited uniformly across the build area despite the chamber moving in a single direction. This asymmetric design achieves omnidirectional material distribution effect without requiring a complex multi-directional supply system.
3Productivity
If the process chamber is moved during material solidification, then productivity increases, but positioning precision deteriorates
Solution Approach 1:
The system dynamically adjusts the heating zones' temperature profiles and positions in real-time based on the process chamber's movement state. The heating zones are designed to be movable or adjustable along the travel direction, allowing the system to maintain optimal thermal conditions on the material layer even as the chamber moves. This dynamic adaptation enables high-speed chamber movement while preserving positioning precision and workpiece quality.
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 enhances the efficiency and quality of additive layer production for large workpieces by ensuring uniform material distribution and precise positioning, while maintaining safety standards.
Implementation Method 1
a gas flow device adapted to form a flow of gas above a surface of the area of the material layer that is to be solidified
Implementation Method 2
a heating unit adapted to heat up the material supplied on the carrier
Implementation Method 3
a solidification device adapted to solidify the material supplied to the carrier and/or the preceding material layers on top of the carrier for producing the three-dimensional workpiece
Implementation Method 4
The laser radiation penetrating into the powder layer causes heating and consequently melting or sintering of the raw material powder particles
Implementation Method 5
Selective laser melting or laser sintering can be used in particular for the production of prototypes, tools, replacement parts or medical prostheses
Data Source
AI summary
We describe a process chamber, an apparatus, a modular system, a method, a safety device, a positioning system and a system for producing a three-dimensional workpiece and/or for use thereof when producing a three-dimensional workpiece. The process chamber for producing the three-dimensional workpiece via an additive layer construction method comprises: a material supply unit comprising a substantially ring-like shaped end portion at a first side of the process chamber, wherein the material supply unit is adapted to supply, via the end portion, material to a carrier on which the material is to be processed by the process chamber for producing the three-dimensional workpiece, and an opening at the first side of the process chamber for processing, by the process chamber, the material supplied on the carrier in order to produce the three-dimensional workpiece, wherein the substantially ring-like shaped end portion surrounds the opening.