Axial Drum Yarn Management for False Twist Homogenization
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Solution Overview
Problem
The existing wire management systems upstream of heat treatment interfaces face issues with homogeneity in wire treatment quality due to divergences in processing operations, leading to inconsistent treatment of wires.
Innovation Solution
A device comprising an axial drum with a fixed support and a curling box, which generates a false twist in wires without tension before thermal fixing, ensuring homogenization and preventing tangling, with a pendulum rotary movement and gripping surfaces to facilitate smooth wire rotation and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wire management systems are used to bring multiple yarns together into a strand, then the yarns can be processed simultaneously, but the treatment quality becomes non-uniform across different wires
Solution Approach 1:
The patent introduces a dynamic element (the drum) that rotates to actively manage and redistribute yarns during processing. This rotation creates varying positions and tensions for different yarns within the strand, ensuring more uniform treatment across all wires while maintaining simultaneous processing capability
Solution Approach 2:
The drum rotation changes the physical parameters of yarn management by varying the position, tension, and arrangement of yarns within the strand during processing. This dynamic parameter change ensures that all yarns receive consistent treatment despite being processed simultaneously
2Ease of operation
If yarns are tensioned during processing, then they can be controlled and directed, but tangling occurs and homogeneity is compromised
Solution Approach 1:
The drum provides dynamic control of yarns through rotation rather than static tensioning. The rotating drum guides yarns through the processing zone without applying continuous tension, maintaining control while preventing the tangling and non-uniform treatment that result from tension-based systems
3Manufacturing precision
If a drum is introduced to manage yarns, then homogeneity of treatment can be improved, but the device complexity increases
Solution Approach 1:
The drum serves multiple functions simultaneously: it guides yarns through the processing zone, distributes them uniformly, controls their movement without tension, and prevents tangling. This multi-functionality achieves homogeneity of treatment without requiring multiple separate devices, thereby limiting the increase in device complexity
Data Source
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AI summary
The present invention relates to a device for managing (1) yarns in a yarn processing line downstream of a curling box (2) and upstream of a means for thermally fixing the curl, said device (1) comprising a fixed support (3), the inlet of the curling box (2) being formed by one or more curl rollers (7) for feeding at least one yarn into the curling box (2), characterized in that the device (1) comprises at least one axial drum (4) positioned upstream of the thermally fixing means, the drum (4) being traversed by a yarn in the curling box (2) and mounted on the fixed support (3) of the device (1) so as to operate a substantially axial rotation allowing to generate at least one false twist to the yarns being processed.