Resin Coating Device with Segmented Die for Glass Fiber
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Solution Overview
Problem
Existing resin coating devices face challenges in achieving uniform thickness when coating glass fibers with resin, often resulting in uneven coatings due to fiber vibration during the coating process.
Innovation Solution
A resin coating device design featuring a die with specific diameter-reduced and land portions that restrain fiber vibration, combined with an intermediate portion and multiple resin supply paths to ensure uniform resin application and prevent air bubbles, allowing for precise coating of glass fibers with two resins simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional coating device is used to coat glass fiber with resin, then the coating process can be completed, but the thickness of the coating becomes uneven due to fiber vibration
Solution Approach 1:
The patent introduces an intermediate portion as a mediator between the first and second alignment portions. This intermediate portion with larger diameter provides a transition zone that stabilizes the fiber before it enters the second alignment portion, preventing fiber vibration and ensuring uniform coating thickness.
Solution Approach 2:
The die is segmented into multiple functional portions: first alignment portion with diameter-reduced part and land, intermediate portion with larger diameter, and second alignment portion with diameter-reduced part and land. Each segment performs a specific function in stabilizing the fiber and controlling resin flow to achieve uniform coating.
2Device complexity
If the die structure is simplified, then the device complexity is reduced, but the ability to prevent fiber vibration and ensure uniform coating is compromised
Solution Approach 1:
The die is divided into distinct functional segments (first alignment portion, intermediate portion, second alignment portion) with specific geometric features. This segmentation allows each part to perform its function efficiently while maintaining overall structural simplicity and ease of manufacturing.
Solution Approach 2:
Different portions of the die have different local qualities: the alignment portions have reduced diameters with land features for fiber positioning, while the intermediate portion has a larger diameter for stabilization. This local differentiation optimizes each region's function without requiring complex overall structure.
3Device complexity
If resin is supplied through a single path, then the supply system is simpler, but the ability to prevent air bubbles and ensure uniform resin distribution is reduced
Solution Approach 1:
The resin supply system is segmented into multiple independent supply paths that feed resin into different portions of the die. This segmentation allows uniform resin distribution throughout the die cavity and prevents air bubble formation, while each supply path remains structurally simple.
4Productivity
If only one resin is applied, then the coating process is simpler, but the ability to provide functional differentiation through multi-layer coating is lost
Solution Approach 1:
The coating device is segmented to support multiple resin application systems, allowing different resins to be applied through separate supply paths and die holes. This enables functional differentiation through multi-layer coating while maintaining efficient simultaneous operation.
Data Source
AI summary
A resin coating device for coating a surface of a glass fiber, includes: a point having a point hole; a die disposed directly below the point and including a first alignment portion, a second alignment portion, and a first die hole; and a first resin supply path. The second alignment portion is disposed below the first alignment portion. The first alignment portion includes a first diameter-reduced portion, and a first land portion disposed, connected to the first diameter-reduced portion, and having a constant diameter in the traveling direction. The second alignment portion includes a second diameter-reduced portion, and a second land portion, connected to the second diameter-reduced portion, and having a constant diameter in the traveling direction. The first diameter-reduced portion, the first land portion, the second diameter-reduced portion, and the second land portion are each a part of the first die hole.