Applicator Elevation Angle for Leakage Prevention in 3D Printing
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Solution Overview
Problem
Existing rapid prototyping techniques face issues with material leakage from applicators, leading to malformed objects and interference with system operation, as prior solutions involving active pressure control and distant material storage result in overly complex apparatuses.
Innovation Solution
The use of an applicator that projects material at an elevation angle with no substantial downward component, typically between -10° and +90°, to allow leaked material to fall freely, combined with a controller coordinating the applicator and surface movement for precise layer deposition, and the application of a supporting substance to enable complex object fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active pressure control and distant material storage are used to prevent material leakage, then material leakage is reduced, but the apparatus becomes overly complex
Solution Approach 1:
The harmful effect of material leakage is addressed by extracting the material storage function from the immediate vicinity of the applicator. Material is stored at a distance and delivered only when needed, removing the source of potential leakage from the critical deposition zone and simplifying the overall apparatus design.
Solution Approach 2:
A controlled material delivery system acts as an intermediary between the distant material storage and the applicator. This mediator ensures material is transferred only when required for deposition, preventing unauthorized or uncontrolled leakage while maintaining simple apparatus architecture.
2Manufacturing precision
If material is projected with a downward component, then deposition accuracy is improved, but leaked material contaminates the object and system
Solution Approach 1:
The potential harm of material leakage is converted into a benefit by orienting the applicator so that any leaked material falls away from the object rather than onto it. The downward gravity force, which could cause contamination, is redirected to serve as a safety mechanism that protects the object from leaked material.
Solution Approach 2:
The problem of material contamination is solved by changing the spatial dimension of leakage protection. Instead of trying to prevent leakage in the horizontal deposition plane, the system uses the vertical dimension to direct leaked material away from the object, creating a safe leakage path in a different spatial dimension.
3Productivity
If the applicator moves in the vertical direction, then layer deposition is enabled, but material leakage increases due to acceleration forces
Solution Approach 1:
The applicator is pre-positioned at an optimized elevation angle before material deposition begins. This preliminary configuration ensures that the applicator is optimally oriented to minimize leakage susceptibility before any vertical movement or material ejection occurs, preventing leakage issues before they can arise during acceleration phases.
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 approach reduces the risk of material leakage, simplifies the apparatus, and allows for the creation of complex objects with features like overhangs, while maintaining the integrity of the final product, as leaked material does not contaminate the object and the system operates more robustly and fail-safely.
Implementation Method 1
Projecting the material in a direction with no substantial downward component may result in any material (or other substance) that has leaked from the applicator falling free of the surface and object being made
Data Source
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AI summary
An apparatus for making an object is disclosed herein.