Thermal Imaging for Additive Build Material Delivery Monitoring
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Solution Overview
Problem
Existing additive manufacturing systems lack automated detection of insufficient build material delivery, often requiring human intervention and leading to uncontrolled printing or wastage of materials.
Innovation Solution
The integration of thermal imaging apparatus and a controller system that uses emissivity differences and edge detection algorithms to automatically detect and respond to insufficient build material delivery, enabling the system to pause the printing process and prevent material wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated detection of build material delivery is implemented, then material delivery monitoring reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces mechanical or manual monitoring methods with a thermal imaging system that uses optical/thermal fields to detect build material delivery. The thermal camera captures temperature differences between the build material and the build plate, automatically identifying when material delivery is insufficient without requiring physical sensors or manual inspection.
Solution Approach 2:
The system enables the additive manufacturing system to self-monitor and self-diagnose material delivery issues. By continuously capturing thermal images and analyzing temperature differences, the system automatically detects material delivery problems and can trigger alerts or pause operations without external intervention, making the monitoring function self-sufficient.
2Device complexity
If manual monitoring of build material delivery is used, then device complexity is reduced, but loss of time increases due to uncontrolled printing
Solution Approach 1:
The thermal imaging system operates continuously throughout the additive manufacturing process, capturing thermal images at regular intervals or in real-time. This continuous monitoring ensures that material delivery issues are detected immediately when they occur, eliminating gaps in surveillance and enabling immediate response to prevent wasted printing time.
Solution Approach 2:
The system establishes a feedback loop where thermal image data is continuously analyzed, and when insufficient build material is detected, the system can provide immediate feedback by triggering alerts, notifying operators, or pausing the printing process. This closed-loop feedback mechanism ensures rapid response to material delivery issues, minimizing time loss.
3Productivity
If automated thermal imaging detection is implemented, then material utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs thermal imaging technology to replace complex mechanical sensing systems or manual monitoring procedures. By utilizing thermal radiation detection and image processing algorithms, the system achieves automated material delivery monitoring with simpler mechanical components, improving material utilization through precise detection of delivery issues.
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 solution allows for automatic detection of build material depletion without human intervention, preventing uncontrolled printing and enabling quick refilling, thus improving the efficiency and material utilization in additive manufacturing processes.
Implementation Method 1
a thermal imaging apparatus to measure a temperature of at least one build material delivery element in the system
Data Source
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AI summary
Measures for use in an additive manufacturing system. The temperature of at least one build material delivery hole in a printbed area of the system is measured. An emissivity of the at least one build material delivery hole is compared with a known emissivity of a build material being used in additive manufacturing by the system at the measured temperature. In response to the comparison indicating a difference in emissivity, it is determined that at least a portion of the at least one build material delivery hole is not covered by build material.