Spun Yarn Take-Up Guide Layout to Prevent Monofilament Entanglement
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Solution Overview
Problem
Existing spun yarn take-up machines entangle multiple monofilament yarns during the winding process, making it difficult to unwind and separate them effectively in subsequent processes.
Innovation Solution
The spun yarn take-up machine employs a traverse guide, fulcrum guide, and bending guide arrangement that applies tension to the mother yarn, ensuring monofilament yarns run side by side or slightly separated, with non-rotatable fulcrum and bending guides to prevent entanglement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple monofilament yarns are guided through the same yarn path in a conventional spun yarn take-up machine, then yarn production efficiency is improved, but the monofilament yarns become entangled with each other
Solution Approach 1:
The yarn path is segmented into multiple distinct paths by introducing a bending guide that creates separate traversal routes for each monofilament yarn. This segmentation prevents the yarns from crossing and entangling while still allowing them to be guided through the take-up machine, thus maintaining high production efficiency without the harmful entanglement effect.
Solution Approach 2:
The bending guide introduces a new spatial dimension to the yarn path arrangement. By creating a bent path configuration rather than straight parallel paths, the invention uses dimensional variation to separate the yarns in space, preventing entanglement while maintaining the efficiency of processing multiple yarns simultaneously.
2Device complexity
If a mother yarn is wound onto a bobbin without interlacing, then the package structure is simplified, but the monofilament yarns become difficult to separate in subsequent processes
Solution Approach 1:
The bending guide is positioned to act on the mother yarn before it is wound onto the bobbin. This preliminary action creates a controlled bent path that maintains separation between monofilament yarns during the winding process, ensuring that when the yarns are later unwound, they remain separable despite the simplified non-interlaced package structure.
Solution Approach 2:
The bending guide creates a curved path for the mother yarn traversal. This curvature introduces a geometric feature that prevents the monofilament yarns from collapsing into each other during winding, maintaining their individual trajectories and ensuring ease of separation in subsequent processes while keeping the package structure simple.
3Adaptability or versatility
If the fulcrum guide and bending guide are made rotatable, then the yarn path flexibility is increased, but the monofilament yarns become more prone to entanglement
Solution Approach 1:
Instead of making the guides rotatable to increase flexibility, the invention inverts the approach by making the guides non-rotatable and fixed in position. The flexibility is then achieved through the fixed bent geometric configuration of the guides, which maintains consistent yarn separation and prevents entanglement while still allowing adaptable yarn path management.
Data Source
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AI summary
Entanglement of monofilament yarns during the production of a mother yarns MY is suppressed. A spun yarn take-up system 1 includes a traverse guide 22, a fulcrum guide 21, a yarn guide 16, and a bending guide 26. The fulcrum guide 21 is positioned above the traverse guide 22 and on the upstream side in the running direction of the mother yarn MY, and extends in the left-right direction (first axial direction). The yarn guide 16 is provided on the upstream side of the fulcrum guide 21 in the running direction. The bending guide 26 is provided between the yarn guide 16 and the fulcrum guide 21 in the running direction. When viewed in the first axial direction, a bending contact surface 26a of the bending guide 26 is arranged on the same side as the fulcrum guide 21 and faces the opposite side of the fulcrum virtual tangent VLP in the fulcrum normal direction, with reference to the fulcrum virtual tangent VLP.