Yarn Winder Cover Member Airflow Guide
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Solution Overview
Problem
The increase in package diameter during yarn winding in yarn winders with multiple bobbins leads to increased air resistance and power consumption, as the accompanied airflow separates from the package surface, causing inefficiencies in the winding process.
Innovation Solution
The implementation of a yarn winder design featuring a first cover member and a second cover member, strategically positioned to guide the accompanied airflow along the package surface and into gaps between packages, reducing air separation and thus minimizing air resistance and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of bobbins is increased to increase productivity, then productivity is improved, but power consumption is increased due to increased air resistance
Solution Approach 1:
The patent converts the harmful accompanied airflow that causes air resistance into a beneficial controlled flow. By introducing guide panels that direct the airflow along the package surface and into gaps between packages, the previously harmful air separation is transformed into a controlled flow pattern that reduces drag and power consumption while maintaining high productivity with multiple bobbins
2Productivity
If the diameter of package is increased during yarn winding, then the winding capacity is improved, but air resistance is increased causing power consumption to increase
Solution Approach 1:
The patent introduces guide panels as intermediary elements between the rotating packages and the surrounding air. These panels act as mediators that control and direct the airflow, preventing direct air separation from the package surface and reducing the harmful air resistance that would otherwise increase with package diameter
3Device complexity
If the shielding panel is provided in the downstream side only, then the device complexity is reduced, but air separation from package surface cannot be suppressed
Solution Approach 1:
The patent divides the airflow control function into multiple segments: guide panels on both upstream and downstream sides, with each segment performing a specific function. The upstream panels prevent air separation at the leading edge, while downstream panels manage flow separation at the trailing edge, creating a comprehensive airflow control system that is more effective than a single shielding panel
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 design effectively suppresses air separation from the package surface, reducing power consumption and maintaining the quality of the wound packages by minimizing weight increase and preventing contact issues with the cover members.
Implementation Method 1
A part of this accompanied flow F is separated (separated air f shown in FIG. 10) from the outer circumferential surface of the package P' in accordance with the rotation of the package P'
Data Source
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AI summary
An object of the present invention is to suppress air resistance applied to packages at the time of winding of yarns in a yarn winder including a bobbin holder to which plural bobbins are attached, so as to reduce power consumption. A yarn winder 4 related to the present invention includes a bobbin holder 24 which is rotatably supported by the base 20, which extends along an axial direction which is along the horizontal direction, and to which bobbins B, which are capable of respectively winding yarns Y, are attached to be aligned in the axial direction, a contact roller 25 which extends in the direction of the axis and which makes contact with outer circumferential surfaces of packages P formed by winding the yarns Y onto the respective bobbins B, and a first cover member 41 which is provided in an area provided upstream of a contact point C in a rotational direction of each of the packages P and which guides air to gaps between the adjacent packages P. The contact point C is between the packages P and the contact roller 25. The air flows toward the contact point C in accordance with rotation of the packages P.