Yarn Winding Package Rotation for Centrifugal End Separation
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Solution Overview
Problem
Conventional yarn winding machines face inefficiencies in energy consumption due to the need for strong negative pressure to catch yarn ends, which can be stuck or attached to the package, leading to increased energy usage and reduced operational efficiency.
Innovation Solution
The yarn winding machine employs a configuration where the package is rotated at a second rotational speed to separate yarn ends from the package using centrifugal force, allowing for reliable catching with a weaker negative pressure, thereby reducing energy consumption and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stronger negative pressure is applied to catch the yarn end, then the yarn end catching reliability is improved, but the energy consumption increases
Solution Approach 1:
The package rotation is performed as a preliminary action before yarn end catching to separate the yarn end from the package surface using centrifugal force. This preliminary separation action eliminates the need for strong negative pressure, allowing the system to use weaker suction while maintaining reliable catching performance.
Solution Approach 2:
The package rotation acts as an intermediary mechanism between the yarn breakage detection and the yarn end catching process. By rotating the package, the system creates centrifugal force that intermediates the separation of the yarn end from the package, making the subsequent catching process more efficient and less energy-consuming.
2Reliability
If the package is rotated at high speed to separate yarn ends using centrifugal force, then the yarn end catching reliability is improved, but the device complexity increases
Solution Approach 1:
The package itself serves as the centrifugal separation device by rotating it on its axis. The existing package structure and rotation mechanism are utilized to generate centrifugal force, eliminating the need for additional specialized separation devices or complex mechanical structures.
Solution Approach 2:
The package rotation mechanism serves multiple functions: it both winds the yarn during normal operation and separates the yarn end using centrifugal force during breakage recovery. This multi-functionality reduces the need for separate dedicated components, thereby minimizing device complexity.
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 approach enhances energy efficiency by lowering power consumption while maintaining reliable yarn end catching performance, minimizing downtime due to yarn breaks and improving overall operational efficiency.
Implementation Method 1
the package is caused to rotate in a winding direction of the yarn and the yarn end is caught by the action of centrifugal force
Implementation Method 2
a yarn catching/guiding device which catches the yarn end from the package by the action of negative pressure suction inside a tube member
Data Source
Figure 1
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AI summary
A winding unit 10 includes a yarn supplying section (15), a yarn winding section (17, 17'), a yarn joining device (38), a first catching / guiding device (30), and a unit controlling section (100). When guiding a yarn end to the yarn joining device (38), if the first catching / guiding device (30) fails in catching the yarn end from a package (22, 22'), the unit controlling section (100) causes the package (22, 22') to rotate in a winding direction of the yarn at a second rotational speed (V2) at which the yarn is wound at a speed of 800 m/min or more. Otherwise the package (22, 22') is rotated at a first rotational speed (V1).