Additive Manufacturing Powder Reclamation via Vacuum Suction
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Solution Overview
Problem
Conventional additive manufacturing machines face issues with powder refill, leading to misdirected powder, spillage, and increased material costs due to inefficiencies in the refill process, which results in operational issues and imperfections in finished components.
Innovation Solution
A vertical additive manufacturing machine with a powder reclamation system that includes a vacuum pump and suction inlet to collect misdirected powder during refill, and a return duct with a filter mechanism to reuse the collected powder, along with a precise powder deposition system using independently controllable powder gates and a recoater for even layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional refill process is used, then powder can be supplied to hopper, but misdirected powder and spillage occur leading to material waste
Solution Approach 1:
The vacuum system captures misdirected powder that would otherwise be wasted and returns it to the powder supply source, converting the harmful effect of misdirected powder into a beneficial recycling process
Solution Approach 2:
The system recovers powder that would normally be discarded during the refill process through vacuum collection and returns it to the powder supply source, preventing material waste
2Reliability
If powder is dispensed during refill, then hopper is replenished, but misdirected powder creates operational issues and imperfections
Solution Approach 1:
The vacuum system captures misdirected powder that would otherwise cause operational issues and component imperfections, converting this harmful byproduct into a recoverable resource
3Loss of substance
If vacuum system is added for powder collection, then powder waste is reduced, but system complexity increases
Solution Approach 1:
The vacuum system acts as an intermediary between the refill process and powder recovery, capturing misdirected powder and returning it to the supply source through a dedicated collection and return pathway
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 system reduces powder waste, maintains a clean operating environment, and ensures precise powder deposition, thereby improving the quality of finished components and reducing material costs by reusing collected powder.
Implementation Method 1
A powder reclamation system includes a vacuum pump for generating a vacuum and a vacuum duct extending from the vacuum pump to a suction inlet
Implementation Method 2
the suction inlet being positioned for collecting misdirected additive powder dispensed during the refill process
Data Source
AI summary
An additive manufacturing machine (910) includes a build unit (920) comprising a powder dispenser (906) including a hopper (1004) for receiving a volume of additive powder (1006). A powder supply system (1000) includes a powder supply source (1010) for providing additive powder (1006) into the hopper (1004) during a refill process. A powder reclamation system (1002) includes a vacuum pump (1030) coupled to a vacuum duct (1034, 1036) defining a suction inlet (1040) positioned for collecting misdirected additive powder (1006) dispensed during the refill process. A return duct (1038) includes a filter mechanism (1050) may filter and return the collected additive powder (1006) back to the powder supply source (1010) for reuse.