Sonic Fluid Jet Yarn Entanglement
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Solution Overview
Problem
In yarn spinning, the interruption of yarn movement during spinneret plate exchange or yarn breakage leads to significant waste and risk of disturbing neighboring yarns, especially when reconnecting yarns at high speeds or with high yarn counts or wet yarns, where achieving a strong connection is difficult.
Innovation Solution
A method involving a fluid jet directed at sonic speed to entangle a first yarn with a main yarn, aligning them parallel and intermingling filaments to form mechanical friction points, effectively reducing waste and operator intervention by ensuring seamless reintegration at the yarn speed of the main yarn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual guidance with aspirator is used to reintroduce yarn, then yarn can be guided through spinning line, but excess yarn length is removed creating waste and operator disturbance risk increases
Solution Approach 1:
The moving yarn automatically guides the stagnant yarn through the spinning line using its own motion, eliminating the need for operator intervention with aspirators. The yarn reintroduction process becomes self-service driven by the continuous motion of the moving yarn, reducing both waste and operational complexity
Solution Approach 2:
The moving yarn acts as an intermediary carrier that transports the stagnant yarn through the spinning line. By connecting the stagnant yarn to the moving yarn, the system uses the motion of one yarn to drive the reintroduction of another, eliminating the need for separate guidance mechanisms
2Strength
If fluid jet is used to entangle yarns when both are stagnant, then connection strength can be controlled, but connection fails when yarns are moving or have high yarn count
Solution Approach 1:
The patent changes the physical parameters of the fluid jet by directing it at sonic speed, which fundamentally alters its interaction with the yarn filaments. This extreme velocity parameter enables the fluid jet to effectively separate and intermingle filaments even when yarns are moving or have high yarn counts, where conventional sub-sonic jets fail
Solution Approach 2:
The fluid jet is applied in a controlled temporal manner - directed onto the yarns for a specific duration to create the entanglement connection, then stopped. This periodic application allows precise control over connection formation while adapting to moving yarns, as the jet can be synchronized with the yarn motion cycle
3Quantity of substance
If yarn count increases, then yarn thickness increases, but connection strength between yarns decreases
Solution Approach 1:
By increasing the fluid jet velocity to sonic speed, the patent overcomes the reduced effectiveness caused by higher yarn counts. The extreme jet velocity generates sufficient force to separate and intermingle the larger number of filaments in thick yarns, creating adequate friction points for strong connections despite the increased yarn diameter
4Quantity of substance
If yarn is wet, then effective filament weight increases, but fluid jet effectiveness to separate filaments decreases
Solution Approach 1:
The patent changes the fluid jet velocity parameter to sonic speed, which provides sufficient force to overcome the increased effective weight of wet filaments. The high-velocity jet penetrates the coherent forces holding wet filaments together, enabling effective separation and intermingling despite the yarn being wet
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 method enables efficient entanglement of high-yarn-count and wet yarns, reducing waste and operator involvement by maintaining yarn speed and strength of connection, even at high speeds, thus optimizing yarn production.
Implementation Method 1
directing a fluid jet onto the first yarn for separating filaments and/or groups of filaments in the first yarn from each other
Implementation Method 2
the fluid jet is directed onto the first yarn at least at sonic speed
Implementation Method 3
intermingles the filaments and/or groups of filaments of the first yarn with filaments and/or groups of filaments of the main yarn to form mechanical friction points between filaments and/or groups of filaments from both yarns
Data Source
Figure 1~2
AI summary
A fluid jet is directed onto a first yarn at least at sonic speed to entangle the first yarn, which is aligned substantially parallel to a main yarn, into the main yarn enabling that yarns having a high yarn count and/or wet yarns can be entangled.