Cassette Securing Device for Glass Plate Positioning
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Solution Overview
Problem
Conventional cassettes used for carrying and processing glass plates in LCD manufacturing suffer from position offsets during transportation, leading to mismachining tolerance and potential industrial accidents due to vibrations and shocks, as they lack effective mechanisms to adjust the position of glass plates.
Innovation Solution
The cassette incorporates a securing device with a stop mechanism and clamping mechanism, featuring a stop bar and stop block that can adjust and clamp the glass plates in place, preventing position offsets during transport and automatically releasing for loading and unloading, utilizing a combination of link levers and springs to ensure secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional cassette design is used for carrying glass plates, then the structure is simple and easy to manufacture, but position offsets occur during transportation leading to mismachining tolerance
Solution Approach 1:
The patent applies the dynamics principle by making the stop bar slidable along the post and the securing portion movable horizontally. This dynamic design allows the cassette to automatically adjust and compensate for position offsets during transportation, transforming a static structure into an adaptive one that maintains manufacturing precision without requiring complex external adjustment devices.
Solution Approach 2:
The securing device is designed to be self-adjusting and self-clamping. The stop bar can slide to accommodate position offsets, and the securing portion automatically engages with the glass plate edges without external intervention. This self-service mechanism resolves the position accuracy issue while keeping the overall structure relatively simple.
2Reliability
If a securing device with stop mechanism and clamping mechanism is added to the cassette, then position offsets are prevented during transport, but the device complexity increases
Solution Approach 1:
The patent merges the stop mechanism and clamping mechanism into a single integrated securing device. The stop bar serves both as a stopper and a transmission element for the clamping mechanism, while the securing portion combines the clamping function with the engagement feature. This merging reduces the number of separate components and simplifies the overall structure while maintaining reliability.
Solution Approach 2:
The dynamic design of the slidable stop bar and movable securing portion allows the device to adapt to position offsets automatically. The stop bar can slide along the post to accommodate lateral movements, and the securing portion can move horizontally to maintain proper engagement, thereby ensuring stability without requiring a complex fixed structure.
3Manufacturing precision
If the stop bar is made slidable through the stop projection, then automatic position adjustment is enabled, but the ease of operation for loading and unloading is reduced
Solution Approach 1:
The securing device is designed to automatically adjust and clamp without requiring manual intervention during normal operation. The slidable stop bar and movable securing portion self-regulate to accommodate position offsets, eliminating the need for operators to manually adjust positions during loading and unloading, thus maintaining ease of operation while achieving precise position adjustment.
Solution Approach 2:
The dynamic design allows the securing device to automatically adapt to position changes during loading and unloading operations. The stop bar can slide and the securing portion can move to maintain proper engagement, reducing the operational burden on workers while ensuring manufacturing precision is maintained throughout the handling process.
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
The solution effectively prevents position offsets and mismachining tolerance by securely clamping glass plates in place during transport and automatically releasing them for handling, enhancing manufacturing precision and safety while maintaining a simple and cost-effective design.
Implementation Method 1
utilizing a combination of link levers and springs to ensure secure positioning
Implementation Method 2
a stop block disposed on a side of the stop bar. A lower end of the stop bar extends beyond a plane of the base plate when the stop block is bearing against an upper surface of the stop projection
Implementation Method 3
a first connection part with a rotation shaft in a middle portion of the first connection part being fixed to the one post and with one end connected with the stop bar in a transmission way
Data Source
AI summary
An embodiment of the invention provides a cassette comprising a top plate, a base plate, a plurality of posts arranged between the top plate and the base plate and defining an operation space, a securing device comprising a stop mechanism and a clamping mechanism and arranged along with one post. The stop mechanism comprises a stop projection provided on an outer side of the one of posts, a stop bar parallel to the one post and slidable disposed through the stop projection, and a stop block disposed on a side of the stop bar. A lower end of the stop bar extends beyond a plane of the base plate when the stop block is bearing against an upper surface of the stop projection. The clamping mechanism comprises a first connection part with a rotation shaft in a middle portion of the first connection part being fixed to the one post and with one end connected with the stop bar in a transmission way, and a securing portion, which connects with the other end of the first connection part and is driven by the first connection part to move horizontally with respect to the one post when an up-and-down movement of the stop bar leads to rotation of the first connection part.