Arcuate Piston Material Supply System for Additive Manufacturing
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Solution Overview
Problem
Conventional additive manufacturing systems face interruptions and inefficiencies in providing build material to the supply receptacle, requiring manual refilling and disrupting production.
Innovation Solution
A system with an arcuate supply receptacle and a movable piston that allows continuous or semi-continuous material supply, including a method to move the piston between extended and retracted positions to manage build material flow and prevent interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual refilling of the supply receptacle is used, then the system structure is simple, but production is interrupted and productivity decreases
Solution Approach 1:
The piston is made movable between extended and retracted positions, transforming a static supply receptacle into a dynamic system. This allows automated material transfer from the dosing hopper to the build area, eliminating manual refilling interruptions while maintaining system functionality.
Solution Approach 2:
The system enables self-service operation where the movable piston automatically transfers build material from the dosing hopper to the supply receptacle as needed. The purge valve also provides self-cleaning functionality, removing excess material automatically without external intervention, thereby maintaining continuous production.
2Ease of operation
If the supply receptacle is positioned within the build enclosure, then material supply is convenient, but manual refilling requires opening the enclosure and causes interruptions
Solution Approach 1:
The movable piston enables continuous material supply operation. As build material is consumed in the build area, the piston automatically replenishes the supply receptacle from the dosing hopper without stopping production. The purge valve continuously removes excess material, ensuring smooth operation throughout the manufacturing process.
Solution Approach 2:
The movable piston acts as an intermediary mechanism between the dosing hopper and the supply receptacle. It facilitates automatic material transfer without requiring direct human intervention or opening the build enclosure, thereby maintaining operational convenience while eliminating refilling interruptions.
3Productivity
If build material is continuously supplied to the build area, then productivity increases, but excess material accumulation occurs
Solution Approach 1:
The purge valve provides a feedback mechanism that monitors and removes excess build material from the build area. As material is supplied to maintain continuous production, the purge valve simultaneously removes unused or excess material, preventing accumulation and waste while maintaining the optimal material level for continuous operation.
Data Source
AI summary
A system (100) includes a build area positioned along a working surface (102), an arcuate supply receptacle (110) defining one or more supply receptacle sidewalls (118, 120) and an upwardly-facing receptacle opening (114) spaced apart from the build area along the working surface, an arcuate piston positioned at least partially within the arcuate supply receptacle (110), where the arcuate piston (130), the upwardly-facing receptacle opening, and the one or more supply receptacle sidewalls (118, 120) at least partially define an interior space (116), and the arcuate piston is positionable between an extended position, in which the interior space has an extended volume, and a retracted position, in which the interior space has a retracted volume that is greater than the extended volume.