Core Yarn Feeder Flow Contour for Low-Turbulence Rotor Spinning
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Solution Overview
Problem
Existing textile machines, particularly rotor spinning machines, produce blended yarns with suboptimal quality due to issues with fiber separation and wrapping, leading to defects and increased cleaning efforts.
Innovation Solution
A textile machine with a disentangling roller housing and fiber guide channel, incorporating a core yarn feeder and flow contour, ensures optimal airflow and streamlined introduction of core yarn, reducing turbulence and improving fiber separation and winding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a core yarn is fed into a yarn production process using a feed tube led through the open end face of the spinning turbine, then the core yarn can be introduced into the spinning groove, but the quality of the resulting yarn deteriorates due to turbulent flows and poor fiber separation
Solution Approach 1:
A flow contour is introduced as an intermediary element in the fiber guide channel to mediate and smooth the airflow. This flow contour acts as a mediator between the core yarn feeder and the spinning rotor, transforming turbulent flows into laminar flows, thereby improving yarn quality without requiring fundamental changes to the core yarn feeding mechanism
Solution Approach 2:
The invention changes the flow parameter from turbulent to laminar by introducing a flow contour with specific geometric parameters (bulge shape, transition areas). This parameter change in the flow regime allows the core yarn and fibers to be transported smoothly to the spinning rotor, eliminating the harmful turbulent effects while maintaining the core yarn feeding function
2Productivity
If fibers are discharged from the disentangling roller housing through a fiber guide channel, then fibers can be fed to the spinning rotor, but turbulent flows cause poor fiber separation and wrapping
Solution Approach 1:
The flow contour serves as an intermediary element within the fiber guide channel that mediates the transition of fibers from the disentangling roller housing to the spinning rotor. By smoothing the airflow through this intermediary structure, the system maintains high fiber transport efficiency while achieving superior fiber separation and wrapping quality
Solution Approach 2:
The flow contour incorporates a bulge shape with curved surfaces that guide the airflow smoothly. This curvature in the flow contour design allows for laminar flow patterns that effectively separate and wrap fibers around the core yarn, improving fiber separation quality while maintaining transport efficiency
3Manufacturing precision
If a core yarn feeder is introduced at the inlet of the fiber guide channel, then the core yarn can be streamlined into the channel, but the device complexity increases
Solution Approach 1:
The core yarn feeder is merged with the flow contour structure, combining two functional elements into a single integrated component. This merging reduces the number of separate parts and simplifies the overall device structure while achieving uniform core yarn wrapping through the coordinated action of the feeder and flow contour
Solution Approach 2:
The flow contour structure serves multiple functions: it smooths airflow, guides the core yarn, and facilitates fiber separation. By making this single element multi-functional, the invention avoids adding separate dedicated components for each function, thereby reducing device complexity while improving core yarn wrapping uniformity
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
Enhances yarn quality by minimizing turbulent flows, improving fiber separation, and reducing resource expenditure on cleaning, while ensuring efficient and uniform wrapping of core yarn with separated fibers.
Implementation Method 1
minimizing turbulent flows
Implementation Method 2
ensures optimal airflow
Implementation Method 3
disentangling roller for disentangling a fiber sliver into largely separated fibers
Implementation Method 4
fibers attach themselves around the core yarn to wrap around it
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
The invention relates to a textile machine, in particular a rotor spinning machine, comprising a disentangling roller housing for enclosing a disentangling roller for disentangling a fiber sliver into largely separated fibers and a fiber guide channel, wherein the fiber guide channel is arranged on the disentangling roller housing in such a way as to discharge the largely separated fibers from the disentangling roller housing and feed them to a spinning rotor. To improve textile machines and increase yarn quality, it is provided that a core yarn feeder is arranged and configured at a transition area between the fiber guide channel and the disentangling roller housing at the inlet of the fiber guide channel, in such a way as to introduce a core yarn into the fiber guide channel in order to feed the core yarn through the fiber guide channel to the spinning rotor.