Textile Thread Guiding Device Degressive Spring Tension
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Solution Overview
Problem
Existing textile machines face challenges in maintaining consistent thread tension during the production of textile fabrics, leading to irregularities in the fabric quality due to varying tension forces applied by traditional thread guide devices using deformable springs.
Innovation Solution
A thread guide device with a force element having a degressive force-deformation relationship or a constant force spring, ensuring a consistent tension force by maintaining a force ratio of 0.8 to 1.2 across the displacement range, thereby minimizing variations in thread tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a deformable spring is used in the thread guide device to provide variable deflection, then the thread feed can adapt to relative movements of processing elements, but the tensioning force on the textile thread varies during processing
Solution Approach 1:
The patent changes the force-deformation parameter relationship of the spring from linear to degressive. The degressive spring is designed such that its stiffness decreases as deformation increases, specifically calibrated so that the ratio of deformation forces at different positions within the deflection range remains between 0.8 and 1.2. This parameter modification allows the spring to provide both adaptive deflection and relatively constant tension.
2Reliability
If a linear spring is used to tension the textile thread, then the thread can be guided under tension, but the thread tension varies during processing leading to irregularities in fabric quality
Solution Approach 1:
The patent modifies the physical parameter of the spring's force-deformation relationship from linear to degressive. The degressive spring characteristic is specifically designed to maintain force ratio between 0.8 and 1.2 across the operating range, thereby providing reliable thread guidance while ensuring consistent fabric quality by minimizing tension variations.
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 solution ensures uniform thread tension, resulting in higher product quality by preventing excessive stretching or contraction of textile threads, thus enhancing the consistency and quality of the textile fabric produced.
Implementation Method 1
The force element comprises at least one first elastic spring element, which is deformed by a displacement of a displacement point of the first spring element along a displacement direction
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
The invention provides a textile machine 100 for the production of textile fabrics, comprising a textile yarn storage unit 1, a working area 3 in which the textile machine 100 processes textile yarns 200 from the textile yarn storage unit 1, and a yarn guiding device 2 by which a textile yarn 200 is guided under tension from the textile yarn storage unit 1 to the working area 3, wherein the yarn guiding device 2 in turn comprises a deflecting element 11, which deflects a textile yarn 200 in contact with it from the textile yarn storage unit 1 into the working area 3, wherein the deflecting element 11 is movably mounted relative to the textile yarn storage unit 1 in a displacement range between a first and a second end position, and a tensioning device 13a; 13b; 13c; 13d; 13e; which supports the deflecting element 11.13f comprises a tension force on the textile thread 200, 200' in contact with the deflecting element 11 and for this purpose comprises a force element 30a; 30b; 30c; 30d; 30e deformable by displacement of the deflecting element 11, in which a ratio of a deformation force of the force element 30a; 30b; 30c; 30d; 30e averaged over the displacement range of the deflecting element 11 to the deformation force of the force element 30a; 30b; 30c; 30d; 30e in the first or in the second end position of the deflecting element 11 is 0.8 to 1.2;