3D Woven Preform Jacquard Pattern Generation from Yarn Position Data

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Solution Overview

Problem

The existing methods for generating jacquard patterns in 3D woven preforms are inefficient and prone to errors, especially for complex structures, due to the manual operation of coloring color blocks, which limits accuracy and efficiency.

Innovation Solution

A method and device that acquire structure information of a unit structure, including warp and weft yarn numbers and positional relationships, to automatically generate jacquard patterns by determining pixel values based on the correspondence and positional relationship between warp and weft yarns, reducing the workload of manual pixel coloring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual operation is used to color color blocks in the jacquard pattern generation process, then the method is simple to implement, but the efficiency and accuracy of jacquard pattern generation are low

Engineering Contradiction:

Improvesimplicity of implementationVSAvoidefficiency of jacquard pattern generation

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent replaces the manual mechanical coloring operation with an automated computer-based system. The system automatically determines pixel values by calculating the positional relationships between warp and weft yarns based on structure information, eliminating the need for manual intervention in the coloring process while significantly improving generation efficiency and accuracy

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service automation where the jacquard pattern generation process automatically determines pixel values through algorithmic calculation of yarn positional relationships. The computer system independently processes structure information and generates the complete jacquard pattern without requiring manual operation, achieving both high efficiency and accuracy

Inventive Principle:

Principle #25Self-service

2Ease of manufacture

If manual operation is used to color color blocks in the jacquard pattern generation process, then the method is simple to implement, but the accuracy of jacquard pattern generation is low

Engineering Contradiction:

Improvesimplicity of implementationVSAvoidaccuracy of jacquard pattern generation

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates feedback mechanisms where the computer automatically verifies and adjusts pixel values based on the calculated positional relationships between yarns. This closed-loop approach ensures high accuracy in jacquard pattern generation by continuously checking and correcting the pattern data

Inventive Principle:

Principle #23Feedback

3Use of energy by moving object

If the existing manual method is used for generating jacquard patterns, then less computational resources are needed, but the generation process is time consuming and error-prone

Engineering Contradiction:

Improvecomputational resource consumptionVSAvoidtime for jacquard pattern generation

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The system performs preliminary actions by pre-calculating and storing the positional relationships between warp and weft yarns in structure information. This pre-processing enables rapid generation of jacquard patterns when needed, significantly reducing generation time while the computational resources required are standard for modern computing systems

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11525194B2Method and device for generating jacquard pattern, electronic device and readable storage medium

Publication Date: 2022.12.13 NANJING FIBERGLASS RES & DESIGN INST CO LTD

AI summary

The present application discloses a method and device for generating a jacquard pattern, an electronic device. The method comprises: acquiring structure information of a unit structure of a preform to be prepared, wherein the structure information comprises a positional relationship between the warp yarns and the weft yarns of the unit structure of a preform to be prepared; obtaining a row number and a column number of the jacquard pattern to be generated, and correspondence between each pixel in the jacquard pattern to be generated and the warp yarns and weft yarns of the unit structure of the preform to be prepared, according to the structure information; and obtaining a pixel value of each pixel according to the correspondence and the positional relationship between the warp yarns and the weft yarns, and generating the jacquard pattern to be generated.