Triangular Flow Path Prepreg Impregnation Device
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Solution Overview
Problem
Conventional prepreg preparation devices face challenges in achieving high resin impregnation ratios and surface uniformity, often resulting in excessive resin use and surface discoloration due to their box-like shape and reliance on pin members for impregnation.
Innovation Solution
A prepreg preparation device incorporating both a flow path-type and a box-type impregnation part within a single mold, where the flow path is triangularly shaped and maintains a constant cross-sectional area, and pin members rotate to alternately touch the fiber, ensuring uniform resin application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a box-like mold is used for impregnation, then the mold structure is simple and easy to manufacture, but excessive resin is required and surface discoloration occurs
Solution Approach 1:
The mold is divided into two distinct impregnation parts: a injection-type impregnation part with a flow path and a box-type impregnation part. This segmentation allows each part to serve a specific function - the injection part delivers resin efficiently while the box-type part provides containment, thereby reducing overall resin consumption while maintaining structural simplicity
Solution Approach 2:
Different regions of the mold are given different functional qualities - the injection-type impregnation part is designed for controlled resin delivery with a defined flow path, while the box-type impregnation part provides containment. This local differentiation optimizes resin distribution and reduces waste
2Device complexity
If pin members are used for fiber transfer, then the device structure is simple, but resin impregnation ratio cannot be guaranteed
Solution Approach 1:
The impregnation process is segmented into two stages: first, pin members transfer the fiber to achieve basic positioning with simple structure; second, the injection-type impregnation part delivers resin through its flow path to ensure proper impregnation ratio. This segmentation allows each component to focus on its strength while achieving overall process goals
Solution Approach 2:
The injection-type impregnation part acts as an intermediary between the resin source and the fiber, using its flow path structure to control and regulate resin delivery. This intermediary mechanism ensures precise resin impregnation ratio while the pin members handle only the fiber transfer function
3Reliability
If excessive resin is used to ensure impregnation, then impregnation coverage is improved, but surface discoloration and uniformity issues occur
Solution Approach 1:
The injection-type impregnation part provides localized, controlled resin delivery through its flow path, ensuring adequate impregnation coverage only where needed. This prevents excessive resin accumulation that causes surface discoloration while maintaining reliable impregnation in critical areas
Solution Approach 2:
Instead of using excessive resin throughout the entire mold, the injection-type impregnation part delivers resin partially and selectively through its flow path to exactly where impregnation is needed, achieving reliable coverage without the harmful effects of over-impregnation
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
This configuration reduces resin usage, improves surface color uniformity, and enhances resin impregnation ratios, leading to prepregs with increased flexural strength and modulus.
Implementation Method 1
a flow path-type impregnation part (110) having a flow path (111) penetrating a corresponding section in a length direction, and impregnating, with a resin (R) filling inside the flow path (111), a reinforced fiber (Fiber) introduced into the flow path (111) while being transferred by way of the flow path (111)
Implementation Method 2
pin members rotate to alternately touch the fiber, ensuring uniform resin application
Data Source
AI summary
A prepreg preparation device and a prepreg preparation method using the same are disclosed. According to an embodiment of the present invention, the prepreg preparation device comprises: a flow path-type impregnation part for impregnating, with a resin, a reinforced fiber transferred along a flow path; and a box-type impregnation part for impregnating, with the resin, the reinforced fiber transferred through a box-type space by passing through the flow path-type impregnation part.