Rotary Carousel Sample Handling System for Misalignment Reduction
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Solution Overview
Problem
Existing test sample handling systems, both queueing and fully automated, face limitations such as limited queueing positions, misalignment of test samples, difficulty in interrupting or reordering tests, and wastefulness due to operator errors and misidentification, especially when dealing with tacky elastomeric materials.
Innovation Solution
A test sample handling system featuring a rotary sample holder with a carrier cylinder and adjustable carrier arm, combined with a lifter mechanism that allows for precise positioning and transfer of test samples, enabling efficient and accurate sample handling and testing without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If queueing systems with limited positions are used, then the system structure is simple, but the productivity is reduced due to frequent operator intervention
Solution Approach 1:
The system divides samples into two distinct groups: tacky samples placed on the lower film and non-tacky samples placed in pockets of the holding device. This segmentation allows each sample type to be handled by its optimal mechanism, resolving the contradiction by enabling high throughput for tacky samples through continuous film feeding while maintaining simplicity for non-tacky samples through automated pocket-based handling.
Solution Approach 2:
The system dynamically switches between two operational modes: queueing mode for tacky samples where the lower film continuously feeds samples to the testing region, and automated pick-up mode for non-tacky samples where the pick-up mechanism retrieves samples from holding device pockets. This dynamic adaptation maximizes productivity for each sample type without requiring a completely complex system redesign.
2Ease of operation
If hand placement of test samples is used, then the ease of operation is improved, but the manufacturing precision deteriorates due to misalignment
Solution Approach 1:
The lower film acts as an intermediary carrier that receives pre-aligned samples from the operator and transports them precisely to the testing region. The film's controlled feeding mechanism ensures that once samples are placed on it, their position is maintained with high precision throughout transport, resolving the contradiction between easy manual placement and precise alignment delivery.
Solution Approach 2:
The system replaces the operator's manual alignment task with a mechanical film feeding system. The lower film's controlled motion and tensioning mechanisms automatically maintain sample alignment during transport, substituting the imprecise human alignment process with a more precise mechanical delivery system.
3Adaptability or versatility
If queueing systems with fixed sample order are used, then the device complexity is reduced, but the adaptability deteriorates when reordering is needed
Solution Approach 1:
The lower film serves multiple functions: it acts as a conveyor for tacky samples, a temporary holding surface for reordering operations, and a alignment guide. The carrier arm also performs multiple tasks including picking samples, positioning them on the film, and adjusting their positions. This multi-functionality provides reordering capability without requiring separate dedicated mechanisms for each function.
Solution Approach 2:
The system enables operator-initiated reordering where the operator can directly manipulate samples on the lower film to rearrange them in the desired sequence. The film's flexible nature allows samples to be easily moved and repositioned without complex automated reordering mechanisms, providing adaptability through simple manual intervention.
4Ease of operation
If film is fed through testing region without testing (skipping positions), then the ease of operation is improved for batch differentiation, but the loss of substance increases due to film waste
Solution Approach 1:
The system extracts and isolates the batch identification function from the continuous film feeding process. By providing discrete pocket positions in the holding device for different batches, samples from different batches can be clearly separated and identified without requiring large sections of film to be skipped. The pick-up mechanism only retrieves samples from occupied pockets, preventing unnecessary film waste while maintaining easy batch differentiation.
Data Source
AI summary
A test sample handling system for transporting test samples to a testing mechanism comprises a rotary sample holder including a carrier cylinder configured to rotate about a central rotational axis thereof and a carrier arm adjustable between a retracted position and an extended position. A carrier is configured to support one of the test samples and is removably coupled to the carrier cylinder. A lifter mechanism is adjustable between a lowered position and a raised position with the adjustment of the carrier arm from the retracted position to the extended position including a decoupling of the carrier from the carrier cylinder and a transporting of the carrier and the corresponding one of the samples to a position above the lifter mechanism. An adjustment of the lifter mechanism from the lowered position to the raised position includes a removal of the one of the samples from being supported by the carrier.