Automated Thermal Analysis Sample Prep With Weighing and Crimping
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Solution Overview
Problem
Current sample preparation for thermal analytical instruments like DSC and SDT is manual, time-consuming, and prone to errors, requiring approximately 30 steps and involving handling of small pans, weighing, and crimping, which is tedious and inefficient.
Innovation Solution
An automated sample preparation system with an autosampler, balance module, and crimping module that automates the process of picking up pans, weighing, and crimping, using an automated gripping system to handle pans and lids, and a crimping module to create hermetic seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual sample preparation is performed, then flexibility and adaptability are maintained, but time consumption and error rates increase significantly
Solution Approach 1:
The system enables self-service automation where the autosampler automatically performs sample preparation tasks including picking pans, weighing samples, and crimping lids without human intervention. The automated gripping system manipulates sample containers through predefined sequences, eliminating manual labor while maintaining consistent quality across all samples.
Solution Approach 2:
Manual mechanical operations are replaced with automated mechanical systems. The autosampler uses robotic gripping mechanisms to handle sample containers, electronic balances for weighing, and automated crimping devices for sealing, substituting human hand operations with programmable mechanical systems that improve precision and speed.
2Measurement precision
If multiple manual steps are performed for each sample, then measurement accuracy is maintained, but the preparation process becomes tedious and error-prone
Solution Approach 1:
The automated system performs sample preparation operations continuously without interruption. The autosampler moves seamlessly between weighing, sample loading, and crimping operations, eliminating the start-stop nature of manual preparation. Multiple samples are processed in sequential order without resetting procedures, maintaining continuous productive action throughout the preparation cycle.
Solution Approach 2:
The system incorporates feedback mechanisms where the electronic balance provides real-time weight data to the control system, which automatically adjusts sample loading to achieve target weights. The automated crimping system uses feedback from position sensors to ensure consistent sealing force and alignment, maintaining precision through closed-loop control.
3Ease of operation
If manual handling of small pans and lids is performed, then dexterity requirements are met, but operator fatigue and errors increase
Solution Approach 1:
The automated gripping system performs self-service handling of sample containers, eliminating the need for operator dexterity. The robotic gripper is programmed with precise positioning and manipulation sequences that consistently handle small pans and lids without fatigue or variation, ensuring reliable operation across thousands of samples.
Solution Approach 2:
The system uses digital copying of procedural sequences rather than repeated manual execution. The exact same handling, weighing, and crimping procedures are copied and executed identically for each sample through automated programming, eliminating human variability and ensuring reproducible results across all samples.
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
Reduces human error and significantly speeds up the sample preparation process, allowing for efficient and accurate automated sample handling and sealing, enhancing the usability and precision of thermal analysis instruments.
Implementation Method 1
providing the pan to a balance module by the automated gripping system, wherein the balance module is configured to perform weight measurement on the pan
Implementation Method 2
providing the pan to a crimping module by the automated gripping system after a sample is loaded into the pan, wherein the crimping module is configured to seal the pan with an automated crimping process
Data Source
AI summary
A method of automated sample preparation for thermal analysis includes picking up, with an automated gripping system of an autosampler, a pan located in a pan well of a sample tray; and performing an automated sample preparation procedure including at least one of: providing the pan to a balance module by the automated gripping system, wherein the balance module is configured to perform weight measurement on the pan; and providing the pan to a crimping module by the automated gripping system after a sample is loaded into the pan, wherein the crimping module is configured to seal the pan with an automated crimping process.