Loom Heddle Frame Cross Point Dynamics for Fabric Texture
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Solution Overview
Problem
Conventional weaving methods fail to produce woven fabrics with unique textures, as they lack the ability to dynamically change the cross point and driving amount of the weft during the weaving process, resulting in a uniform and unvaried appearance.
Innovation Solution
A weaving method that sets a special operation pattern for the loom's heddle frames, including a first pattern with multiple weaving cycles where the cross point changes in the upper and lower direction, and a second pattern that returns the cross point to the initial position, while also varying the cross timing to differ from the beating time, thereby altering the tension and driving amount of the weft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional weaving method is used with fixed operation patterns, then the weaving process is simple and stable, but the woven fabric lacks unique textures and visual interest
Solution Approach 1:
The patent applies dynamics by making the cross point position variable rather than fixed. The operation pattern dynamically adjusts the cross point position in the upper and lower directions during the weaving process, allowing the weaving device to adapt and produce varied textures. This dynamic adjustment enables the same loom to create multiple fabric textures without mechanical modifications.
Solution Approach 2:
The patent changes the parameter of cross point position to create texture variety. By varying the cross point position parameter in the operation pattern, the weaving process produces different fabric appearances. Additionally, changing the cross timing parameter relative to the beating time further modifies the driving amount of the weft, enhancing texture diversity.
2Illumination intensity
If the cross point is kept fixed during weaving, then the weaving process is stable and easy to control, but the woven fabric surface appears uniform without shading effects
Solution Approach 1:
The patent makes the cross point position dynamic rather than static. The operation pattern causes the cross point to move in the upper and lower directions during weaving cycles, which creates shading effects on the fabric surface. This dynamic movement intercepts light differently, producing visual interest while remaining controllable through programmed patterns.
3Adaptability or versatility
If the cross timing is set the same as the beating time, then the weaving process is straightforward, but the driving amount of the weft remains constant and texture variety is limited
Solution Approach 1:
The patent changes the timing parameter by setting the cross timing differently from the beating time. This parameter change causes the driving amount of the weft to vary during the weaving process, as the reed drives the weft at different positions depending on the cross point location. This creates texture variety while the timing relationship remains systematically controllable.
Data Source
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AI summary
A weaving method in a loom includes setting at least a part of heddle frames (2) as a target heddle frame, and setting an operation pattern set for the target heddle frame as a special operation pattern. The special operation pattern is an operation pattern for one repeat of a weaving pattern set in a form of assigning height position information to each weaving cycle. The height position information is information about a cross point and having a cross timing of warps. The special operation pattern includes a first pattern having a first setting weaving cycle, and a second pattern set after the first pattern. The first pattern is set to change the cross point toward one side in an upper-lower direction, and the second pattern is set to change the cross point toward a first cross point of the first setting weaving cycle.