Thin Section Preparing Apparatus Velocity Synchronization
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Solution Overview
Problem
Existing thin section preparing apparatuses face challenges in maintaining cutter sharpness and preventing wrinkles or breakages during the automated slicing and transport of thin sections, as different velocity vectors act on the sliced and unsliced portions of the thin section, leading to inefficiencies and poor quality samples.
Innovation Solution
A thin section preparing apparatus and method that utilizes a cutter with a predetermined pull angle, an approaching and separating mechanism, and a carrying mechanism with a control unit to synchronize the travel velocities of the embedded block and the carrying body, ensuring equal velocity vectors for both sliced and unsliced portions, thereby maintaining cutter sharpness and preventing wrinkles or breakages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an endless belt is used to automatically carry sliced thin sections, then productivity is improved by automating the transport process, but manufacturing precision deteriorates due to wrinkles or breakages occurring in the thin section during transfer
Solution Approach 1:
A transfer belt is introduced as an intermediary carrier between the slicing cutter and the endless belt. The transfer belt receives the thin section from the cutter, transports it to the endless belt, and then separates from the process. This intermediary mechanism allows automated transport while maintaining thin section integrity by providing a controlled, gentle transfer process that prevents wrinkles and breakages.
2Duration of action of stationary object
If a pull angle is provided to the cutter with respect to the embedded block, then the cutter sharpness is maintained for longer periods, but the velocity vectors of sliced and unsliced portions differ causing wrinkles or breakages
Solution Approach 1:
The system dynamically coordinates the movement of multiple components: the embedded block moves in the approaching and separating direction, the cutter moves in the pulling direction with a pull angle, and the transfer belt moves in the transport direction. By dynamically adjusting and synchronizing these movements, the velocity vectors of both sliced and unsliced portions are made equal, preventing wrinkles and breakages while maintaining the beneficial pull angle for cutter sharpness.
3Productivity
If the embedded block and carrying body move at different velocities, then automated continuous slicing is achieved, but different velocity vectors act on thin section portions leading to wrinkles or breakages
Solution Approach 1:
The control unit continuously monitors and coordinates the velocities of the embedded block, cutter, and transfer belt. By implementing feedback control, the system adjusts the movement speeds to ensure that the velocity vectors of sliced and unsliced portions remain equal throughout the slicing process. This maintains thin section quality while enabling automated continuous operation.
Data Source
AI summary
A thin section preparing apparatus prepares a thin section from an embedded block having a biological sample embedded and carries the thin section. The thin section preparing apparatus includes a cutter, an approaching and separating mechanism, a carrying mechanism, a moving unit, a sliding mechanism and a control unit. The cutter slices the block at a pull angle. The approaching and separating mechanism relatively moves the block and the cutter along an approaching and separating direction. The carrying mechanism having a carrying body is arranged as one end side is near a nose, and the moving unit moves the body along a transport direction. The sliding mechanism relatively moves the block and the body along a moving direction. The control unit controls a combined velocity vector that combines a transport velocity vector of the body along the transport direction with a travel velocity vector of the body along the moving direction to be nearly equal to a block velocity vector of the embedded block along the approaching and separating direction.