Filament Winding Device with Linear Opening Member
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Solution Overview
Problem
Existing filament winding devices struggle to evenly spread and wind fiber bundles around a liner due to circular-shaped spreading guides, leading to gaps and reduced strength, as the fiber bundles are not effectively flattened and spread in the width direction.
Innovation Solution
A filament winding device with a helical winding head featuring fiber bundle guides and an opening member with a linear orthogonal cross-section inner peripheral surface, allowing for efficient spreading and flattening of fiber bundles, preventing gaps and ensuring even winding by matching the number of opening surfaces with fiber bundle guides and using a regulating portion to prevent shifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner peripheral surface of the spreading guide has a circular shape, then the fiber bundle makes contact with a circular arc shaped portion and is rubbed and opened, but the fiber bundle is less likely to become flat and spread in the width direction
Solution Approach 1:
The patent changes the circular shape of the inner peripheral surface to a polygonal shape with flat sections. This asymmetric transformation allows the fiber bundle to contact flat surfaces rather than curved surfaces, enabling effective flattening and spreading in the width direction while maintaining the opening function.
Solution Approach 2:
The patent modifies the geometric parameters of the inner peripheral surface by introducing flat sections with linear cross-sections. This parameter change transforms the contact geometry from curved to flat, enabling the fiber bundle to be flattened and spread effectively without requiring excessive rubbing force.
2Ease of operation
If the fiber bundle is rubbed and opened by a circular arc shaped surface, then the opening action is achieved, but gaps easily form between fiber bundles in the peripheral direction
Solution Approach 1:
The polygonal shape with flat sections creates asymmetric contact zones that properly align multiple fiber bundles. The flat sections provide stable contact surfaces that prevent peripheral shifting and ensure uniform spacing between adjacent fiber bundles during the winding process.
Solution Approach 2:
The inner peripheral surface is segmented into multiple flat sections rather than being a continuous circular arc. Each flat section corresponds to a specific fiber bundle path, providing dedicated contact zones that maintain proper spacing and prevent gaps between adjacent bundles.
3Device complexity
If multiple fiber bundles share a common opening surface, then the structure is simplified, but the fiber bundles interfere with each other and cannot be lined without gaps
Solution Approach 1:
The opening member's inner peripheral surface is divided into multiple distinct flat sections, with each section dedicated to opening and guiding a specific fiber bundle. This segmentation prevents interference between adjacent bundles while maintaining a compact integrated structure, achieving both simplicity and precision.
Solution Approach 2:
Different sections of the inner peripheral surface are optimized for specific functions: flat sections provide stable contact for individual fiber bundles, while the overall polygonal structure maintains structural integrity. Each local region is tailored to handle specific fiber bundles without interfering with others.
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 device effectively spreads and flattens fiber bundles, preventing gaps and ensuring even winding around the liner, enhancing the strength and uniformity of the wound structure while minimizing damage and interference between bundles.
Implementation Method 1
The fiber bundle travels while making contact with the inner peripheral surface of the spreading guide to be rubbed and opened by the inner peripheral surface of the spreading guide
Data Source
AI summary
A helical winding unit includes a plurality of guides arrayed in a peripheral direction of a liner, and adapted to guide each of a plurality of fiber bundles supplied to the helical winding unit to the liner, and an opening member arranged downstream of the plurality of guides in a travelling direction of the fiber bundle, and including an inner peripheral surface for forming a hole, through which the plurality of fiber bundles are inserted from one side to the other side in the axial direction. A plurality of opening surfaces on which the plurality of fiber bundles travel while making contact are formed on the inner peripheral surface of the opening member, and a cross-sectional shape orthogonal to the axial direction of each opening surface is linear.