Fiber Bundle Chuck Device with Elastic Guides
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chuck devices for fiber bundles in hoop winding applications struggle to maintain a firm grip, especially under high tension, leading to fiber bundles falling out during winding and cutting processes, and when holding multiple bundles, the holding force is not effectively transmitted.
Innovation Solution
A chuck device with a pair of hands that can be opened and closed, featuring guides that regulate and bend the fiber bundles under closure, supported by elastic bodies, and a pad for additional friction to securely hold the bundles, ensuring they are gripped firmly even under high tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high fluid pressure is applied to increase sandwiching force, then holding force is improved, but fiber bundles still fall out under high tension
Solution Approach 1:
The invention changes the fundamental mechanism from pressure-based holding to tension-based holding. The guides are configured to regulate and bend fiber bundles, and under closing state, they hold the fiber bundle by being close to each other with tension applied to the fiber bundle. This parameter change from compression (fluid pressure) to tension (fiber tension) resolves the contradiction by utilizing the fiber's own tension to improve holding reliability.
Solution Approach 2:
The invention introduces dynamic adaptation where the guides automatically adjust their holding mechanism based on the applied tension. When tension is applied to the fiber bundle, the guides close and hold the fiber bundle by being close to each other with the tension applied. This dynamic response ensures that holding force increases with fiber tension, maintaining reliability under varying load conditions.
2Force
If friction is increased on the hands, then holding force is improved, but fiber bundles still fall out under high tension
Solution Approach 1:
The invention fundamentally changes the holding mechanism from friction-based to tension-based. Instead of relying on increased friction between the hands and fiber bundles, the guides utilize the tension applied to the fiber bundle to close and hold the fiber bundle securely. This parameter change resolves the contradiction by making holding force dependent on fiber tension rather than friction.
3Productivity
If multiple fiber bundles are held collectively, then winding efficiency is improved, but holding force is not transmitted to all bundles
Solution Approach 1:
The invention segments the holding function across multiple guides that individually regulate and bend fiber bundles. Each guide can independently respond to tension in its associated fiber bundle, ensuring that holding force is properly distributed to all bundles while maintaining collective handling for improved winding efficiency.
4Reliability
If the hoop winding device moves in axial direction, then positioning is improved, but fiber bundles fall out due to tension variation
Solution Approach 1:
The invention introduces dynamic adaptation where the guides automatically adjust their holding mechanism based on the applied tension. When tension is applied to the fiber bundle during axial movement, the guides close and hold the fiber bundle by being close to each other with the tension applied. This dynamic response ensures that holding force increases with fiber tension, maintaining reliability during positioning movements.
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 enhanced chuck device effectively maintains a firm grip on fiber bundles, preventing them from falling out during winding and cutting, even when multiple bundles are held, by utilizing tension and friction to securely sandwich the fibers.
Implementation Method 1
The hand includes supporting bodies adapted to support the plurality of guides. Under the closing state, the guides are close to each other by the supporting bodies being elastically deformed with the tension applied on the fiber bundle.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A chuck device (51) for a fiber bundle (F), and includes a pair of hands (61, 62) adapted to be opened/closed. The pair of hands (61, 62) includes a plurality of guides (63) adapted to regulate and bend the fiber bundle (F) under a closing state, and to release the fiber bundle (F) under an opening state. Under the closing state, the plurality of guides (63) holds the fiber bundle (F) by being close to each other with tension applied on the fiber bundle (F).