Cassette Transfer Device Dynamic Height Adjustment
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Solution Overview
Problem
Existing lift and transfer devices in automatic manufacturing and storage systems face challenges with precise positioning and collision issues when handling heavy cassettes, particularly those with metal plates, due to height mismatches and structural yielding, leading to noise, damage, and increased maintenance needs.
Innovation Solution
The solution involves using two successive lifting movements and lowering movements of the transfer device to smoothly transfer cassettes, with support rolls on the lifting carriage and cassette, allowing for precise height adjustment and minimizing friction, thus reducing the need for precise rack positioning and minimizing the number of support rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If cassettes are transferred using conventional lift and transfer devices, then the transfer process can be automated, but height mismatches and structural yielding cause collisions, noise, and damage to heavy cassettes
Solution Approach 1:
The lifting carriage is designed with dynamic height adjustment capability, allowing it to adapt its position to match the cassette height during transfer. This dynamic adjustment prevents collisions and damage by ensuring smooth engagement between the carriage and cassette regardless of initial height mismatches or structural yielding in the rack.
2Object-affected harmful factors
If precise positioning is used to prevent collisions, then damage to cassettes is reduced, but the complexity of the positioning system increases
Solution Approach 1:
The system uses the rack's own structural features (supports and brackets) to facilitate precise positioning during transfer. The lifting carriage utilizes the existing rack infrastructure rather than requiring additional complex positioning mechanisms, allowing the system to achieve precise alignment through self-service utilization of available structural elements.
3Quantity of substance
If heavy cassettes are handled with conventional devices, then storage capacity is maintained, but the force effects from collisions increase noise and maintenance needs
Solution Approach 1:
The lifting carriage incorporates cushioning mechanisms that are activated before contact with the cassette during transfer. This beforehand cushioning absorbs the impact forces that would otherwise cause collisions, noise, and damage to heavy cassettes, thereby reducing maintenance requirements while maintaining full storage capacity.
4Ease of operation
If support rolls are used on the lifting carriage, then friction during transfer is reduced, but the number of required support rolls increases device complexity
Solution Approach 1:
The invention extracts and utilizes the rack's existing support brackets and structural features to provide the necessary support during transfer, rather than adding numerous support rolls to the lifting carriage. This approach reduces friction and improves transfer smoothness while minimizing the number of additional components required on the carriage itself.
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 method enables safe handling of heavy loads without damaging structures, reduces maintenance needs, and simplifies the transfer process by minimizing friction and precision requirements, allowing for efficient transfer of cassettes between the rack and the stacker crane.
Implementation Method 1
minimizing friction, thus reducing the need for precise rack positioning
Data Source
AI summary
A method and a storage and manipulation system for manipulating and transferring cassettes used for storage. The system includes a rack for storing cassettes. The rack includes supports on which the cassette rests. A transfer device includes a slide, onto which the cassette can be transferred. The slide includes a lifting and lowering movement. The transfer device also includes grippers that grip the cassette and moving it onto or off the slide. The slide can be placed underneath the front part of the cassette and, by a lifting movement, elevate the front part of the cassette such that the cassette can be transferred along the support onto the slide. A rear part of the cassette is simultaneously supported by the support. The slide can also lower the front part of the cassette onto the support when the rear part of the cassette is transferred onto the support of the rack.