Yarn Winder Fulcrum Guide Wear Suppression
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Solution Overview
Problem
Existing yarn winders face issues with local wear of fulcrum guides due to continuous high-speed contact with yarns, leading to quality deterioration and bearing damage from high-speed rotation, necessitating a solution that suppresses local wear without requiring bearings.
Innovation Solution
A yarn winder design featuring a movement mechanism to move fulcrum guides between winding and threading positions, with an automatic rotation mechanism for at least one fulcrum guide during threading, preventing high-speed rotation during winding and thus eliminating the need for bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fulcrum guides are arranged to be freely rotatable, then local wearing is suppressed, but bearings are needed and they get damaged soon due to high-speed rotation
Solution Approach 1:
The fulcrum guide is designed to change its rotational state dynamically: it rotates during threading operations to prevent local wearing, and remains stationary during winding operations to avoid high-speed rotation damage. This dynamic adaptation resolves the contradiction between preventing wear and avoiding bearing damage.
Solution Approach 2:
The fulcrum guide performs periodic rotation only during specific phases (threading) rather than continuous rotation. This periodic action allows wear prevention when needed while avoiding the harmful effects of continuous high-speed rotation, eliminating the need for bearings.
2Reliability
If fulcrum guides do not rotate during yarn winding, then high-speed rotation damage is avoided, but local wearing occurs due to continuous contact with the same parts
Solution Approach 1:
The fulcrum guide transitions from a static non-rotating state during winding to a rotating state during threading. This dynamic behavior allows the system to avoid bearing damage during high-speed winding while preventing local wearing through periodic rotation during threading phases.
Solution Approach 2:
The fulcrum guide is rotated in advance during threading operations before the winding process begins. This preliminary rotation redistributes the contact areas, preventing local wearing from occurring during the subsequent winding operation where the guide remains stationary.
3Object-affected harmful factors
If fulcrum guides are rotated at high speed during yarn running, then local wearing is suppressed, but cost and labor are needed for bearing maintenance
Solution Approach 1:
Instead of continuous high-speed rotation during yarn running, the fulcrum guide rotates periodically only during threading operations. This eliminates the need for bearings and their associated maintenance costs and labor, while still achieving wear suppression through periodic redistribution of contact areas.
Solution Approach 2:
The bearing component is completely removed from the system by eliminating continuous rotation of the fulcrum guide. By taking out the bearing requirement through periodic rather than continuous rotation, maintenance costs and labor are eliminated entirely.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
A yarn winder (10) in which local wearing of fulcrum guides (16) is reliably suppressed and the fulcrum guides (16) does not need bearings is provided. Fulcrum guides (16) are rollers each having a central axis, having outer circumferential surfaces on which the yarns (Y) are placed, and being arranged not to rotate about the central axis during yarn winding. The yarn winder (10) includes: a movement mechanism (20) configured to move the fulcrum guides (16) between winding positions where the yarn winding is performed and yarn threading positions where yarn threading is performed; and a rotation mechanism (30, 40 , 50) configured to automatically rotate at least one of the fulcrum guides (16) about the central axis, when the movement mechanism (20) moves the fulcrum guides (16) between the winding positions and the yarn threading positions.