Folding Test Machine With Adjustable Curvature Radius
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Solution Overview
Problem
Existing methods for testing the durability of thin glass or resin substrates, particularly in flexible displays, are inefficient as they rely on manual bending and cannot consistently replicate the evenly-curved curvature required for bow-shaped folding, making it difficult to assess substrate performance across varying curvature radii and arc lengths.
Innovation Solution
A folding test machine with a boxed-frame design featuring moveable walls and rotatable holding parts allows for controlled, repeated bow-shaped bending of substrates by adjusting the curvature radius and arc length, utilizing plate springs to maintain an evenly-curved curvature and minimize internal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual bending is used to test substrate durability, then flexibility assessment is possible, but testing efficiency and consistency are poor
Solution Approach 1:
The patent replaces the manual mechanical bending system with an automated mechanical testing system. The testing machine uses a movable wall with holding parts that automatically bend the substrate according to predetermined parameters, eliminating manual operation inconsistencies and significantly improving both testing efficiency and reliability.
Solution Approach 2:
The patent introduces dynamic adjustable parameters including curvature radius (R1, R2) and arc length (L1, L2) that can be modified through the movable wall's position and the holding parts' rotation angles. This dynamic adjustability allows systematic testing under various curvature conditions, enhancing both productivity and reliability.
2Adaptability or versatility
If the substrate is bent with fixed curvature parameters, then testing is simple, but adaptability to different curvature conditions is limited
Solution Approach 1:
The patent employs dynamic parameters including curvature radii (R1, R2) and arc lengths (L1, L2) that can be adjusted by changing the movable wall's position and the holding parts' rotation angles. This allows the same device structure to accommodate multiple curvature conditions, achieving high adaptability without proportionally increasing device complexity.
Solution Approach 2:
The testing machine is designed with universal functionality to test substrates under various curvature conditions using the same basic structure. The movable wall and rotatable holding parts can be configured for different curvature radii and arc lengths, making the device versatile for multiple testing scenarios without requiring separate specialized equipment for each condition.
3Ease of operation
If the holding parts are fixed in position, then the structure is simple, but internal stress cannot be relieved during bending
Solution Approach 1:
The holding parts are designed to be rotatable about their respective axes, allowing dynamic adjustment of the substrate's orientation during bending. This rotational capability enables proper alignment and stress distribution during the bending process, improving ease of operation while the modular rotatable design keeps the overall structural complexity manageable.
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
Enables precise and efficient testing of substrates by allowing for variable curvature and bending shapes, reducing manual effort and ensuring consistent stress distribution, thereby improving the assessment of substrate durability across different curvature conditions.
Implementation Method 1
the workpiece and a plate spring other than the object are held by the holding parts on the both ends thereof so as to be bridged between the fixed wall and the moveable wall in a bow-shaped manner
Data Source
AI summary
A folding test machine to measure the durability against folding can be operated by minor adjustment even if a radius of curvature of the folding or an arc length of the folding is changed. A fixed wall and a moveable wall are opposingly provided in an approximately box-shaped frame and a holding part to hold a workpiece is provided on the top of each of the fixed wall and the moveable wall in a rotatable manner in a vertical plane of the rotation. And the workpiece and a plate spring are held on the respective opposing end portions so as to be bridged between the fixed wall and the moveable wall in a curved manner such that the moveable wall is moved closer to and farther from the fixed wall repeatedly such that the work is folded repeatedly.