Flexible Screen Coiling Test Apparatus with Dynamic Tension Control
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Solution Overview
Problem
Existing testing devices for flexible screens often cause uneven force distribution, leading to damage and inaccuracies in evaluating the coiling characteristics due to local bulging and deformation during coil testing.
Innovation Solution
An apparatus comprising a slide rail, a reel, a clamping module with pressure sensing sub-modules, and a drive module that adjusts the reel's rotation angular velocity based on detected tension forces to maintain consistent tension, preventing local bulging and ensuring accurate coiling performance evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the testing device clamps the flexible screen during coiling performance evaluation, then the coiling characteristic can be tested, but uneven force is caused at two ends of the screen leading to damage and large evaluation errors
Solution Approach 1:
The testing device incorporates a force sensor that provides real-time feedback on the tension force applied to the flexible screen. The control system uses this feedback to dynamically adjust the driving speed of the reel, ensuring uniform force distribution and preventing screen damage while maintaining accurate coiling characteristic evaluation.
Solution Approach 2:
The system transitions from static clamping to dynamic control by adjusting the reel's driving speed based on real-time force sensor data. This dynamic adjustment ensures that the flexible screen experiences uniform tension throughout the coiling process, preventing local bulging and deformation while enabling accurate measurement.
2Productivity
If the reel rotates to drive the flexible screen to coil around it, then coiling performance can be evaluated, but locally uneven force causes local bulging and deformation of the screen body
Solution Approach 1:
The force sensor continuously monitors the tension distribution during coiling and provides feedback to the control system. When local uneven force is detected, the system adjusts the reel's rotation speed to redistribute the force uniformly, preventing local bulging and deformation while maintaining efficient coiling testing.
Solution Approach 2:
The system changes the operational parameters (reel rotation speed) based on real-time force measurements. By dynamically adjusting the rotation speed parameter, the system maintains uniform force distribution on the screen body during coiling, preventing deformation while preserving testing efficiency.
3Force
If the screen body bends at a large angle at the reel during initial coiling, then coiling can start, but uneven force results in large error in evaluating coiling characteristic
Solution Approach 1:
The force sensor provides real-time feedback on the tension force during initial coiling. The control system uses this feedback to adjust the reel's driving speed, ensuring that the screen body bends at appropriate angles with uniform force distribution, thereby eliminating large evaluation errors while maintaining effective coiling initiation.
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 apparatus stabilizes the flexible screen during coiling, reduces damage, and improves the accuracy of coiling characteristic evaluation by maintaining consistent tension and preventing local bulging, ensuring smooth and precise testing.
Implementation Method 1
The pressure sensing sub-modules are configured to detect tension force received by the flexible screen in the extension direction of the slide rail and generate a tension detection signal
Implementation Method 2
The reel is configured to rotate to drive the flexible screen to fit to the reel and coil around the reel
Data Source
AI summary
An apparatus for testing a flexible screen. The apparatus for testing a flexible screen includes a slide rail, a reel, a clamping module and a drive module. The reel is fixed to one end of the slide rail. The axial direction of the reel is perpendicular to the extension direction of the slide rail. The flexible screen includes a first end and a second end which are disposed opposite to each other. The reel is configured to fix the first end of the flexible screen and rotate to drive the flexible screen to fit to the reel and coil around the reel. The clamping module is configured to clamp the second end of the flexible screen. The reel is further configured to rotate to drive, through the flexible screen, the clamping module to slide along the slide rail towards the reel.