Take-up winder intermediate guide reduces yarn bend angle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional take-up winders face challenges in reducing the bend angle of yarns at guides while maintaining yarn quality, leading to increased construction costs and decreased operability due to the need to install the second godet roller at a higher position, which degrades cooling and heating efficiency.
Innovation Solution
The take-up winder configuration includes additional guides upstream of the traverse support point guides to share the bend angle, reducing the apparent bend angle at the traverse support point guides and allowing the second godet roller to be installed at a lower position without increasing the number of guides, thus maintaining yarn quality and reducing construction costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the length of the bobbin holder is increased to increase the number of packages simultaneously formed, then productivity is improved, but the bend angle of the yarn at the traverse support point guide increases causing yarn quality degradation
Solution Approach 1:
The invention introduces an intermediate guide between the second godet roller and the traverse support point guide to segment the yarn path. This intermediate guide shares the bend angle with the traverse support point guide, allowing each guide to operate within acceptable bend angle limits while still accommodating the increased bobbin holder length for higher productivity
Solution Approach 2:
The intermediate guide acts as a mediator in the yarn path between the second godet roller and the traverse support point guide. It regulates the yarn path and distributes the bend angle, preventing excessive bending at any single guide while maintaining yarn quality
2Manufacturing precision
If the second godet roller is installed at a higher position to reduce the bend angle at the traverse support point guide, then yarn quality is maintained, but construction costs increase and cooling and heating efficiency decrease
Solution Approach 1:
Instead of vertically repositioning the second godet roller, the invention segments the horizontal yarn path by introducing an intermediate guide. This approach maintains the second godet roller at its original position, avoiding increased construction costs and improving cooling and heating efficiency while still achieving acceptable bend angles
Solution Approach 2:
The invention addresses the bend angle problem by utilizing the horizontal dimension through the intermediate guide rather than the vertical dimension. This allows the second godet roller to remain at its original height while still managing yarn bend angles through the intermediate guide's positioning
3Manufacturing precision
If additional guides are added to reduce the bend angle at each guide, then yarn quality is maintained, but resistance to yarn travel increases
Solution Approach 1:
The invention applies local quality by positioning the intermediate guide specifically at the location where the yarn path needs regulation. This targeted approach reduces the bend angle at critical points without requiring multiple guides throughout the entire path, thereby minimizing added resistance while maintaining yarn quality
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
An object of the present invention is to set a bend angle θ equal to or smaller than a management upper-limit bend angle θk and to reduce the need to install a second godet roller at a higher position without the need to increase the number of guides. A take-up winder 1 includes a spinning section 2, a first godet roller 3 and a second godet roller 4 arranged in order along yarn paths of yarns Y spun by the spinning section 2, a bobbin holder 5 supporting a plurality of take-up bobbins 7 around which the respective yarns Y fed from the second godet droller 4 are wound, and a plurality of traverse support point guides 6 each configured to set a traverse support point for traversing of the corresponding one of the yarns Y fed from the second godet roller 4. The plurality of winding bobbins 7 are coaxially supported by the bobbin holder 5. The axial direction 4j of the second godet roller 4 is set to be orthogonal to the axial direction 7j of the take-up bobbins 7. Each of the yarns Y bent at the respective traverse support point guides 6 by more than the management upper-limit bend angle θk is bent by a close guide 9 provided upstream of and close to the corresponding traverse support point guide 6.