Spinning Winder Distribution Guide Curvature Radius
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Solution Overview
Problem
Existing spinning winders cause significant damage to yarns due to high contact pressure at distribution guides, especially when the bending angle is large, and require frequent maintenance due to rapid rotation of distribution guides, which is not suitable for varying yarn thicknesses.
Innovation Solution
A spinning winder with distribution guides having a curvature radius of 3mm to 8mm at sliding surfaces and not rotating during yarn running, along with a sliding position change mechanism to extend guide life and prevent yarn drop-off, allows for increased bending angles without apparatus height increase and reduces maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the godet rollers are highly positioned to reduce the bending angle of yarn, then the yarn damage is reduced, but the apparatus size becomes large
Solution Approach 1:
The distribution guide is designed with a curved surface having a specific radius of curvature (3mm to 8mm) that matches the yarn thickness. This curvature allows the yarn to bend smoothly around the guide surface, reducing contact pressure and yarn damage without requiring the godet rollers to be positioned at excessive heights, thereby maintaining a compact apparatus size.
2Object-affected harmful factors
If the distribution guides are rotatably supported to reduce yarn damage, then yarn damage is restrained, but frequent maintenance is required due to bearing wear
Solution Approach 1:
Instead of rotating the distribution guide to reduce yarn damage, the invention inverts the approach by making the distribution guide stationary and allowing the yarn to slide over its curved surface. This eliminates the need for bearings and rotation mechanisms, thereby reducing maintenance frequency while still restraining yarn damage through the optimized curvature radius.
3Object-affected harmful factors
If the distribution guides are rotated by a driving unit to reduce yarn damage, then yarn damage is restrained, but a large force is exerted on thin yarn causing damage
Solution Approach 1:
The invention eliminates the rotation mechanism entirely and uses a stationary distribution guide with an optimized curved surface. The yarn slides over this surface under minimal friction, avoiding the large forces that would be exerted by a rotating distribution guide on thin yarn, while still achieving the goal of restraining yarn damage.
Solution Approach 2:
The curvature radius of the distribution guide is specifically set within the range of 3mm to 8mm, which optimizes the contact characteristics between the guide and yarn. This parameter optimization reduces contact pressure and friction, allowing the yarn to pass through smoothly without experiencing excessive forces that would cause damage, particularly to thin yarn.
4Productivity
If a large number of distribution guides are aligned to handle more yarns, then the spinning capacity is increased, but the bending angle of yarn becomes large at outer distribution guides
Solution Approach 1:
Each distribution guide is equipped with a curved surface having a radius of curvature between 3mm to 8mm, which allows yarn to bend smoothly even at larger distances from the godet rollers. This curvature design enables the system to accommodate a larger number of distribution guides aligned axially to increase spinning capacity, while maintaining acceptable bending angles and minimizing yarn damage at outer distribution guides.
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
Minimizes yarn damage by controlling contact pressure and eliminating the need for frequent maintenance, while maintaining a compact apparatus size and accommodating varying yarn thicknesses.
Implementation Method 1
distribution guides that bend the yarns spun out from the spinning unit and distribute the yarns to the respective bobbins attached to the winding spindle, curvature radii of the distribution guides at sliding surfaces on which the yarns slide
Data Source
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AI summary
Damage on yarns is restrained while allowing the bending angles of the yarns at distribution guides by which the yarns spun out from a spinning unit are distributed to be large. Yarns 10 serially spun out and supplied from a spinning machine are conveyed to a winding unit below by two godet rollers, and in a winding unit the yarns 10 are distributed by fulcrum guides 13 and then wound onto bobbins attached to a bobbin holder. Each fulcrum guide 13 is a column having a radius of not shorter than 3mm and not longer than 8mm, and the yarn 10 is threaded on the outer circumference of the fulcrum guide 13. By rotating the fulcrum guide 13, the sliding position between the fulcrum guide 13 and the yarn 10 is changed. Furthermore, the movement of the yarn 10 threaded on the fulcrum guide 13 is restrained in the axial directions of the fulcrum guide 13, because the yarn 10 is arranged to pass through a slit 25a made through a restraining guide 25 which is provided above the fulcrum guide 13.