Sample Handling Tool With Vertical Coupling Mechanism
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Solution Overview
Problem
Existing sample handling devices require complex and inflexible tool changing processes, with tools being susceptible to damage due to intricate mechanisms and directional changes, limiting their versatility and reliability.
Innovation Solution
A tool design with a holding device integrated into the tool, allowing for coupling and decoupling in a single direction, simplifying the process and reducing susceptibility to damage, along with a sample handling device that can move the tool holder vertically and horizontally to accommodate various tool types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tools are changed manually, then the device structure remains simple, but the productivity and automation level are low
Solution Approach 1:
The tool holder is designed to automatically perform the functions of picking up, moving, and coupling tools during the coupling/decoupling process. When the tool holder moves vertically, it automatically positions the holding device to engage with the tool's fastening device, eliminating the need for separate pickup arms or complex mechanical grippers.
Solution Approach 2:
The tool holder serves multiple functions: it holds the tool during analysis, automatically picks up the tool from storage positions, moves the tool to the analysis position, and couples the tool to the analysis device. This multi-functionality is achieved through the integrated holding device that can engage with different tool types using the same vertical coupling mechanism.
2Productivity
If a pickup arm with complex mechanisms is used for automatic tool changing, then productivity increases, but the tool is susceptible to damage due to intricate mechanisms and directional changes
Solution Approach 1:
The coupling mechanism is segmented into two independent interfaces: the fastening device interface (for attaching the tool to the tool holder) and the holding device interface (for positioning and securing the holding device). This segmentation allows each interface to be optimized independently, with the holding device providing robust vertical coupling that eliminates lateral forces on the tool.
Solution Approach 2:
The holding device is extracted from the tool holder body and implemented as a separate, movable component that engages with the tool independently. This allows the holding device to be positioned optimally for vertical coupling while the fastening device remains fixed on the tool holder, separating the coupling functions to reduce complexity and damage risk.
3Device complexity
If the holding device is integrated into the tool holder, then the device structure is simplified, but the adaptability to different tool types is reduced
Solution Approach 1:
The holding device is designed to move vertically relative to the fastening device, allowing dynamic adjustment of its position. This vertical movement enables the holding device to accommodate tools of different heights and configurations while maintaining the same coupling mechanism, providing adaptability without increasing overall device complexity.
Solution Approach 2:
The fastening device and holding device are designed with different local characteristics: the fastening device provides secure attachment with form-fitting connections, while the holding device provides positioning and support with vertical movement capability. Each interface is optimized for its specific function, allowing the system to handle diverse tool types effectively.
4Reliability
If sequential movements in different directions are required for tool coupling, then the coupling can be secure, but the ease of operation and time efficiency are reduced
Solution Approach 1:
The vertical movement of the tool holder simultaneously achieves multiple objectives: it positions the holding device for engagement, couples the holding device to the tool, and secures the tool in the analysis position. This merging of functions into a single vertical motion eliminates the need for sequential horizontal and vertical movements, simplifying operation while maintaining coupling security through the form-fitting connection elements.
Data Source
AI summary
In the case of a tool (140) for handling a sample, which comprises a fastening device (141) for detachably fastening the tool to a tool holder of a sample handling device and a sample manipulation device attached to the fastening device (141), for example designed as a syringe (150), this includes a holding device, for example in the form of a needle guide (160), which on the one hand is movable in a coupling direction (165) attached to the fastening device (141) and on the other hand is detachable from or attached to the tool holder in the coupling direction (165).