Multifunctional Nozzle for Spinning Machine Yarn Production
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Solution Overview
Problem
Current spinning technologies, such as ring spinning and rotor spinning, face limitations in producing yarns with optimal strength, uniformity, hairiness, and manufacturing costs, with each method having specific advantages and disadvantages, and there is a need for a solution that combines the benefits of open and ring yarns while avoiding the drawbacks of parallel fibers and abdominal binding.
Innovation Solution
A multifunction nozzle for spinning machines that generates a vertebral fluid flow using a pressure-covered nozzle housing with a nozzle canal, a fluid inlet, a nozzle body, and a ring gap, allowing for the production of yarns with real rotation and improved properties by integrating isolated fibers without an unintended core, enabling the combination of advantages from open and ring yarns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If ring spinning process is used, then yarn strength and uniformity are improved, but spinning speed is limited to low speeds
Solution Approach 1:
The invention uses a jet of pressurized gas (pneumatics) to transport fibers and create the spinning vortex, replacing the mechanical ring-traveler system. This allows high-speed operation while maintaining yarn quality through controlled aerodynamic forces rather than mechanical constraints.
Solution Approach 2:
The invention replaces the mechanical ring-traveler system with an aerodynamic jet spinning mechanism. The pressurized gas jet creates a vortex that twists and compacts fibers without requiring physical contact between traveler and ring, enabling higher spinning speeds while maintaining yarn strength.
2Productivity
If rotor spinning process is used, then spinning speed and productivity are improved, but yarn strength and uniformity deteriorate due to belly bands and wrap-around fibers
Solution Approach 1:
The invention uses a controlled pressurized gas jet to transport and twist fibers, replacing the rotor's mechanical fiber collection and twisting mechanism. This pneumatic approach creates more uniform fiber distribution and twist without the belly bands and wrap-around fibers characteristic of rotor spinning, improving yarn strength while maintaining high speed.
Solution Approach 2:
The invention changes the fundamental spinning parameter from mechanical rotation ( rotor) to controlled pneumatic vortex flow. By adjusting gas pressure, flow rate, and nozzle geometry, the system optimizes fiber twist and compactness to eliminate belly bands while maintaining high productivity.
3Productivity
If single-jet air-jet spinning is used, then spinning speed is improved, but yarn strength and uniformity deteriorate due to limited fiber processing capability
Solution Approach 1:
The invention segments the fiber processing into distinct zones within the gas jet: a primary vortex zone for fiber twisting and a secondary compacting zone for yarn formation. This multi-zone approach allows better control over fiber orientation and twist distribution, improving yarn strength while maintaining high spinning speed.
Solution Approach 2:
The invention transitions from a single linear jet flow to a three-dimensional vortex flow field with radial and axial components. This dimensional change creates a more complex fiber trajectory that enhances fiber-twist interaction and yarn compactness, improving strength while maintaining productivity.
4Productivity
If higher spinning rotor speeds are used, then productivity is improved, but the number of belly bands increases reducing yarn quality
Solution Approach 1:
The invention uses pneumatic forces to control fiber motion and twist, replacing the mechanical rotor system that generates belly bands. The pressurized gas jet creates a controlled vortex that uniformly distributes fibers along the yarn length, eliminating the periodic fiber bunching that creates belly bands even at high speeds.
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
The nozzle enables the production of yarns with enhanced strength, uniformity, and reduced hairiness, suitable for a wider range of applications, with increased spinning speed and productivity, and the ability to produce threads that are free from disturbing abdominal binding and circulating fibers.
Implementation Method 1
a fluid inlet for admitting a pressurized fluid into the nozzle channel to create a swirling fluid flow within the nozzle channel
Implementation Method 2
a fiber sliver, previously drawn in a drafting device and consisting of predominantly parallel fibers, is air-spun into a yarn-forming element by means of a vortex air flow generated in an air-jet spinneret
Data Source
Figure 1~2
Figure 3~5
Figure 4
AI summary
The invention relates to a multifunctional nozzle for a spinning machine, said nozzle being used to produce at least one improved real twist yarn. The multifunctional nozzle additionally facilitates the production of a real twist yarn with which the advantages of an open-end yarn can be at least partly combined with those of a ring yarn. For this purpose, the multifunctional nozzle comprises a nozzle channel which is provided in a nozzle housing, is open on one side, and in which a vortex flow can be generated. Furthermore, a nozzle body which is designed to be shorter than the nozzle channel is provided with a through-channel for the passage of a thread or fiber band, wherein an annular gap with at least one narrow point is formed within the nozzle channel, said annular gap tapering on both sides at the narrow point. The narrow point is arranged downstream of a fluid inlet which leads to the nozzle channel. Furthermore, a hollow body-type flow conducting body is provided between the annular gap and the open end of the nozzle channel for guiding the thread or fiber band together with a fluid, said annular gap being formed between the nozzle body and the nozzle housing and/or the flow conducting body.