Textile Machine Belt Noise Reduction via Twill Weave Shift
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Solution Overview
Problem
Textile machine belts often produce uncomfortable running noise in the 6000 to 8000 Hz frequency range due to contact with pulleys, which affects the working environment.
Innovation Solution
A textile machine belt featuring a canvas core with a twill weave texture, where aggregates are shifted at a predetermined interval, reducing surface undulations and noise. The canvas core is combined with resin layers and rubber layers for adhesion and flexibility, providing a flattened surface and increased tensile strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional belt structure with rubber layer is used, then abrasion resistance and bending resistance are provided, but running noise in the 6000 to 8000 Hz frequency range increases causing discomfort
Solution Approach 1:
The patent applies composite materials by combining a canvas core made of polyester and polyamide filaments with rubber layers. The canvas core provides structural stability and noise reduction properties, while the rubber layers maintain abrasion and bending resistance. This composite structure resolves the contradiction by integrating materials with complementary functions.
Solution Approach 2:
The patent applies local quality by creating a canvas core with non-uniform filament arrangement where polyester and polyamide filaments are distributed in specific patterns. This local variation in material composition optimizes both noise reduction in the 6000-8000 Hz range and maintains mechanical reliability through strategic placement of different filament types.
2Object-affected harmful factors
If aggregates in the canvas core are uniformly distributed, then manufacturing simplicity is maintained, but surface undulations occur leading to increased running noise
Solution Approach 1:
The patent applies asymmetry by intentionally creating a non-uniform distribution of aggregates in the canvas core. The polyester and polyamide filaments are arranged in asymmetric patterns rather than uniform distribution, which suppresses surface undulations and reduces running noise while remaining manufacturable through conventional weaving techniques.
3Productivity
If the belt operates for a long period, then productivity is maintained, but surface properties deteriorate leading to increased running noise
Solution Approach 1:
The patent applies inversion by designing the canvas core structure to prevent surface degradation rather than merely addressing it after occurrence. The interwoven polyester and polyamide filaments create a stable structure that resists wear and maintains surface properties over long periods, inverting the conventional approach of dealing with degradation after it occurs.
Solution Approach 2:
The patent applies parameter changes by selecting specific material properties for the canvas core filaments, including their composition ratio, thickness, and arrangement density. These parameter optimizations ensure the belt maintains its surface properties and noise reduction performance even after extended operation periods.
Data Source
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AI summary
The present invention provides a belt for a textile machine capable of reducing running noise caused during belt running. A canvas core used in the belt is constituted by a woven fabric based on a twill weave texture in which a warp crosses a plurality of wefts and aggregates (19) of weave points at which the warp crosses the wefts are regularly shifted in one longitudinal direction (L) of the belt to form a twill line (17), and some of the aggregates (19) in the twill line (17) are shifted at a predetermined interval in the opposite direction to the one longitudinal direction.