Interlacing Device Yarn Containment Fluid Ejection
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Solution Overview
Problem
Existing interlacing devices for multifilament yarns face issues such as yarn jumping out through the insertion slit and fluid being blown out, due to the slit's proximity to the yarn passage center, which affects interlacing performance.
Innovation Solution
An interlacing device with a configuration where the yarn traveling space is formed by a groove and a surface, with the slit located upstream of the groove bottom and away from it, featuring a fluid ejecting hole with a cross-section longer in the yarn travel direction and narrower in the insertion direction, preventing yarn jumping and fluid ejection through the slit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the insertion slit is positioned close to the center of the yarn passage, then the yarn can be easily inserted into the yarn traveling space, but the yarn is likely to jump out through the insertion slit and fluid is likely to be blown out
Solution Approach 1:
The groove is designed with non-uniform width, being wider at the opening and narrower at the bottom, creating different local characteristics along its length. This allows the opening to facilitate yarn insertion while the narrower bottom portion prevents yarn jump-out and fluid blow-out, resolving the contradiction between ease of insertion and containment reliability.
2Productivity
If the fluid ejecting hole is positioned to jet fluid strongly against the yarn, then interlacing performance is improved, but fluid is more likely to be blown out through the insertion slit
Solution Approach 1:
The groove's varying width creates different functional zones: the wider opening area allows fluid to jet strongly against the yarn for good interlacing performance, while the narrower bottom portion restricts fluid blow-out through the insertion slit, thus resolving the contradiction between interlacing effectiveness and fluid containment.
3Reliability
If the groove is formed to extend inward with a wider inner portion, then yarn containment and fluid flow control are improved, but manufacturing complexity increases
Solution Approach 1:
The interlacing device is divided into separate components (first interlacing piece with groove and second interlacing piece with insertion slit), allowing the groove to be formed independently in one piece while the insertion slit is formed in another. This segmentation simplifies the manufacturing of each individual component while achieving the desired complex overall structure for reliable yarn containment and fluid flow control.
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 configuration enhances interlacing performance by preventing yarn escape, ensuring symmetric fluid flow, and inhibiting fluid ejection through the slit, while allowing easy manufacturing due to the combined groove and surface design.
Implementation Method 1
a fluid ejecting hole formed in the first surface so that a fluid is ejecting through the fluid ejecting hole
Data Source
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AI summary
The present invention provides an interlacing device (100) including a first interlacing piece (2) having a first surface (7) and a fluid ejecting hole (10) formed in the first surface (7) so that fluid is ejected through the fluid ejecting hole (10), and a second interlacing piece (2) having a second surface (8) and a yarn traveling groove (11) formed in the second surface (8). The first surface (7) and the second surface (8) are arranged opposite each other so as to combine the yarn traveling groove (11) and the first surface (7) together to form a yarn traveling space (18) as a space through which the multifilament yarn Y to be interlaced travels so that the yarn traveling space (18) communicates with the fluid ejecting hole (10) and to form a slit (12) as a gap through which the multifilament yarn Y can be inserted into the yarn traveling space (18) in a direction perpendicular to a yarn traveling direction of the multifilament yarn Y. The yarn traveling groove (11) extends inward in a direction perpendicular to the second surface (8).