Rotatable Conveyor Powder Distributor for Additive Manufacturing
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Solution Overview
Problem
Smaller additive manufacturing apparatuses face challenges in reliably delivering powder material to a build location while minimizing exposure to moving components, which can lead to contamination of nearby components.
Innovation Solution
An additive manufacturing apparatus with a rotatable support conveyor and a powder distributor featuring a rake portion that moves powder material from a storage vessel to a build platform, reducing contamination by precise delivery and allowing for efficient layer formation within a compact process chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a smaller additive manufacturing apparatus is used for prototyping, then the apparatus size is reduced, but the ability to repeatedly deliver powder material becomes compromised
Solution Approach 1:
The powder delivery system is segmented into distinct functional zones: a powder storage vessel, a delivery mechanism with rotating conveyor, and a build platform area. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system compactness
Solution Approach 2:
The patent employs a rotating conveyor mechanism that dynamically transports powder material from the storage vessel to the build platform. This dynamic delivery system enables repeated and reliable powder supply within a compact footprint by efficiently utilizing rotational motion to move material through the confined space
2Productivity
If powder material is delivered repeatedly in a smaller volume, then the powder delivery frequency increases, but contamination of nearby moving components increases
Solution Approach 1:
The patent extracts and isolates the powder material from the main process chamber by using a separate, enclosed storage vessel. This extraction prevents powder contamination of other components while maintaining high delivery frequency through the controlled rotating conveyor mechanism
Solution Approach 2:
The rotating conveyor acts as an intermediary mechanism that transfers powder material from the enclosed storage vessel to the build platform. This intermediary approach allows frequent powder delivery while the enclosed vessel design prevents contamination of surrounding components
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
The solution enables reliable and repeatable delivery of powder material to the build platform, reducing contamination risks and enhancing the capability for precise three-dimensional object formation within a compact and efficient manufacturing process.
Implementation Method 1
powder material falls from the powder storage vessel, through the opening and into a space between the rotatable support conveyor and the bottom of the process chamber housing
Implementation Method 2
a powder distributor that includes a rake portion that is located between the rotatable support conveyor and the bottom of the process chamber housing
Data Source
AI summary
An additive manufacturing apparatus for forming a three-dimensional article through successive fusion of parts of layers of a powder material, which parts correspond to successive cross-sections of the three-dimensional article includes a process chamber housing enclosing a process chamber. A rotatable support conveyor is rotatably connected to a bottom of the process chamber housing by a rotatable shaft. The rotatable support conveyor includes an opening that extends therethrough for dispensing powder material from a powder storage vessel located on the rotatable support conveyor and a powder distributor that includes a rake portion that is located between the rotatable support conveyor and the bottom of the process chamber housing.