Spun Yarn Take-up Apparatus with Segmented Guide Rollers
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Solution Overview
Problem
The existing spun yarn take-up apparatus faces challenges in efficiently transferring yarns from a spinning apparatus to a winding unit due to the long distance between processing areas, leading to issues with yarn handover success rates and increased risk of yarn breakage, especially when using a large guide roller with high contact resistance.
Innovation Solution
The apparatus incorporates a yarn take-down device with yarn threading portions spaced apart in a direction intersecting with the up-down direction, allowing for precise capture and transfer of yarns, and includes features like a yarn convergence guide and holding unit to manage yarns deviated from the primary path, enhancing the handover success rate and reducing the risk of yarn breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large guide roller is used to increase the distance between yarn parts, then the handover success rate improves, but the apparatus size increases and contact resistance increases causing yarn breakage
Solution Approach 1:
The guide roller is divided into multiple smaller guide rollers arranged in sequence along the yarn path. Each guide roller is spaced apart from the others, creating multiple discrete guidance points. This segmentation maintains the total guidance distance needed for reliable handover while using smaller individual rollers that reduce contact resistance and prevent yarn breakage.
2Reliability
If a large guide roller is used to increase the distance between yarn parts, then the handover success rate improves, but contact resistance increases causing yarn breakage
Solution Approach 1:
The guide roller is divided into multiple smaller guide rollers arranged in sequence along the yarn path. Each guide roller is spaced apart from the others, creating multiple discrete guidance points. This segmentation maintains the total guidance distance needed for reliable handover while using smaller individual rollers that reduce contact resistance and prevent yarn breakage.
3Device complexity
If yarns are placed on a single guide roller, then the apparatus is compact, but the design freedom for receiving tools is decreased and handover success rate is lowered
Solution Approach 1:
The guide roller is divided into multiple smaller guide rollers arranged in sequence along the yarn path. Each guide roller is spaced apart from the others, creating multiple discrete guidance points. This segmentation maintains the total guidance distance needed for reliable handover while using smaller individual rollers that reduce contact resistance and prevent yarn breakage.
Solution Approach 2:
Multiple guide rollers are arranged in a spatial sequence along the yarn path, utilizing the longitudinal dimension of the apparatus. This arrangement provides multiple reception points for yarns at different positions along the path, increasing design freedom for receiving tools while maintaining a compact overall structure through efficient spatial utilization.
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 configuration improves the yarn handover success rate by maintaining yarn distance and reducing contact resistance, allowing for efficient transfer and handling of yarns, even when the guide roller is large, and provides design flexibility for receiving tools.
Implementation Method 1
a first yarn sucking unit provided in the first yarn processing space and configured to suck and retain the yarns spun out from the spinning apparatus
Implementation Method 2
a yarn take-down device configured to take the yarns retained by the first yarn sucking unit down from the first yarn processing space to the second yarn processing space
Data Source
Figure 1
Figure 2
Figure 3(a)~3(c)
AI summary
The success rate of handover of yarns which are taken down by a yarn take-down device is improved. A spun yarn take-up apparatus includes a take-up unit 6 provided on the first floor, a yarn sucking device 47 provided on the second floor to suck and retain yarns Y spun out from a spinning apparatus 2, and a yarn take-down device 4 configured to take the yarns retained by the yarn sucking device 47 down from the second floor to the first floor. The yarn take-down device 4 includes two yarn threading portions 42 which are separated from each other in a direction intersecting with an up-down direction, and each yarn Y is threaded onto these yarn threading portions in order.