Jacquard Pattern Generation for Preform Yarn Reduction
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Solution Overview
Problem
The existing methods for generating jacquard patterns for preforms with complex structures and variable thicknesses are inefficient and inaccurate due to the large number of yarn reduction points, making it difficult to generate the jacquard pattern directly from the preform's structure without errors.
Innovation Solution
A method that first generates an initial jacquard pattern based on the preform's structural information and then adjusts it using yarn reduction information, allowing for automatic generation of the jacquard pattern without needing to acquire the weave structure at each interweaving point, thereby improving efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the jacquard pattern is generated directly according to the structure of the preform by acquiring weave structure at each interweaving point, then the accuracy of the generated jacquard pattern can be maintained, but the generation efficiency becomes very low due to the large number of interweaving points
Solution Approach 1:
The patent segments the preform structure into primitive structures (basic units without yarn reduction) and processes them separately. By dividing the complex preform into manageable segments, the system can generate the jacquard pattern more efficiently without needing to process every single interweaving point individually, thus improving productivity while maintaining accuracy through systematic processing of each primitive structure.
Solution Approach 2:
The patent performs preliminary action by first generating the jacquard pattern based on the primitive structure before yarn reduction is applied. This preliminary generation allows the system to establish the base pattern once, and then only needs to adjust it for yarn reduction at specific locations, significantly reducing the overall processing time compared to generating the pattern at every interweaving point from scratch.
2Manufacturing precision
If the jacquard pattern is generated by acquiring weave structure at each interweaving point, then the accuracy can be maintained, but the complexity of the generation process increases due to the large number of yarn reduction points
Solution Approach 1:
The patent divides the complex generation process into segments by processing primitive structures separately. Instead of handling every interweaving point uniformly, the system identifies and processes only the critical interweaving points where yarn reduction occurs, simplifying the overall process complexity while maintaining accuracy at those key locations.
Solution Approach 2:
The patent extracts the essential information needed for jacquard pattern generation from the primitive structure and applies it only where necessary. By taking out the core structural information and using it to generate the base pattern, then only adjusting at specific yarn reduction points, the system reduces the complexity of processing while maintaining the required accuracy.
3Adaptability or versatility
If yarn reduction is applied to create variable thickness preforms, then the preform can achieve complex structures and shapes, but the number of yarn reduction points increases making the jacquard pattern generation difficult and error-prone
Solution Approach 1:
The patent performs preliminary action by generating the jacquard pattern based on the primitive structure before applying yarn reduction. This allows the system to establish the correct pattern once for the base structure, and then only needs to make localized adjustments at yarn reduction points, reducing the likelihood of errors compared to trying to generate the complete pattern after all yarn reductions are applied.
Solution Approach 2:
The patent uses the primitive structure as a template or copy that represents the basic weave pattern. By copying this primitive structure and then applying yarn reduction modifications, the system can maintain accuracy while handling complex variable thickness preforms. The primitive structure serves as a reference that can be reused and modified rather than regenerating the entire pattern from scratch.
Data Source
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AI summary
The present application discloses a method and a device for generating a jacquard pattern of a preform, and an electronic device and a storage medium. The method comprises acquiring initial structure information of a preform to be prepared; generating an initial jacquard pattern of the preform to be prepared according to the initial structure information; pixel values of pixels in the initial jacquard pattern, comprising a first pixel value and a second pixel value, are equal to the first pixel value when warp yarns corresponding to the pixels are located above corresponding weft yarns, and are equal to the second pixel value when warp yarns corresponding to the pixels are located below corresponding weft yarns; acquiring yarn reduction information of the preform to be prepared, the yarn reduction information comprises an actual warp yarn layer number and yarn reduction position information at interweaving points of each column of warp yarns and each column of weft yarns in the preform to be prepared; and adjusting the initial jacquard pattern according to the yarn reduction information to obtain the jacquard pattern of the preform to be prepared. The present application can be implemented to automatically generate a jacquard pattern of the preform to be prepared with high efficiency and high accuracy.