Rotating Guide Roll for Fiber Bundle Yarn Path Stabilization

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Solution Overview

Problem

Conventional fiber bundle winding devices fail to stabilize the yarn path without causing entanglement of single fibers, leading to poor quality winding packages and deformation of tape-like fiber bundles during winding and unwinding.

Innovation Solution

A fiber bundle traversing device with a yarn path guide featuring a guide roll and supporting member with a rotating shaft at a right angle to the guide roll, allowing the guide roll to incline and adjust to yarn path variations, ensuring the fiber bundle is guided automatically back to its original path, and a manufacturing apparatus using this guide to maintain a stable and uniform yarn width.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a wide guide roll is used to allow yarn path variation, then the fiber bundle can be conveyed without entanglement, but the yarn path stability deteriorates leading to poor winding quality

Engineering Contradiction:

Improveentanglement of single fibersVSAvoidyarn path stability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The guide roll is made rotatable about its shaft to dynamically adjust its orientation. When the fiber bundle deviates from the central yarn path, the guide roll automatically rotates to incline toward the deviation side, guiding the bundle back to the central path. This dynamic adjustment maintains yarn path stability without causing entanglement.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The guide roll automatically responds to yarn path deviations through self-rotation based on the position of the fiber bundle. The system uses the deviation itself as the signal to trigger the corrective action (rotation of the guide roll), eliminating the need for external sensors or control mechanisms.

Inventive Principle:

Principle #25Self-service

2Manufacturing precision

If the yarn path is stabilized using conventional guide rolls, then winding quality improves, but the fiber bundle travels obliquely causing friction and deterioration

Engineering Contradiction:

Improvewinding package qualityVSAvoidfriction and fiber bundle deterioration

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The guide roll dynamically inclines by rotating about its shaft in response to fiber bundle position. When the bundle travels obliquely, the guide roll rotates to align its surface perpendicular to the bundle direction, ensuring straight travel and eliminating oblique friction while maintaining stable yarn path.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If a fixed guide roll is used, then the device structure is simple, but it cannot adapt to yarn path variations causing entanglement

Engineering Contradiction:

Improveguide roll structureVSAvoidyarn path variation and entanglement

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The guide roll is designed to rotate about its shaft, transforming it from a fixed structure to a dynamic one. This simple rotational degree of freedom enables the guide roll to adapt to yarn path variations automatically, preventing entanglement without adding complex control systems.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8123156B2Yarn path guide, traversing device of fiber bundle and system for producing fiber bundle package

Publication Date: 2012.02.28 TORAY INDUSTRIES INC

AI summary

A traversing device for stabilizing the yarn path of a thin and uniform flat fiber bundle without causing any trouble, e.g. entanglement of single fibers, and ensuring a good winding appearance of the winding package of fiber bundle, and a yarn path guide for stabilizing the yarn path without causing any trouble, e.g. entanglement of single fibers.