Fiber Guide Passage Curvature for Air Spinning Convergence

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Solution Overview

Problem

Conventional fiber guides in air spinning devices do not effectively converge fiber bundles, leading to increased fiber waste and inefficient spinning processes.

Innovation Solution

A fiber guide with a specifically configured passage, featuring inclined inner wall lines and a curved transverse section, which guides fibers downstream while converging them suitably and reducing fiber loss, is introduced.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If a straight passage is used in the fiber guide, then the structure is simple, but the fiber bundle cannot be converged suitably leading to increased fiber waste

Engineering Contradiction:

Improvefiber wasteVSAvoidpassage configuration

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The fiber passage is configured with curved inner wall lines instead of straight lines. The first and second inner wall lines are formed as curved lines when viewed in the axial direction, creating a converging effect that reduces fiber waste while maintaining reasonable structural complexity.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The inclination angles of the inner wall lines are optimized within specific ranges (25°-70° for the first virtual straight line, 5°-30° for the second virtual straight line). This parameter optimization achieves suitable fiber convergence while controlling the complexity of the passage configuration.

Inventive Principle:

Principle #35Parameter changes

2Shape

If the inner wall lines are highly inclined, then fiber convergence is improved, but fiber alignment and smooth guidance may be compromised

Engineering Contradiction:

Improvefiber bundle convergenceVSAvoidfiber guidance smoothness

Core Design Contradiction:

ShapeVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

Different sections of the fiber passage have different inner wall line configurations. The first and second inner wall lines have different inclination characteristics, creating localized convergence zones that accommodate both fiber bundling and smooth guidance requirements.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4335955A1Fiber guide, air spinning device, and air spinning machine

Publication Date: 2024.03.13 MURATA MASCH LTD

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AI summary

In a fiber guide 101, a first cross section of a distorted passage 111 cut along a plane parallel to an axial direction of the fiber guide 101 includes a first inner wall line WL1 and a second inner wall line WL2. A distance between a first upstream end point AU1 on the first inner wall line WL1 and a second upstream end point AU2 on the second inner wall line WL2 is longer than a distance between a first downstream end point AD1 on the first inner wall line WL1 and a second downstream end point AD2 on the second inner wall line WL2. A first virtual straight line VL1 connecting the first upstream end point AU1 and the first downstream end point AD1 is inclined at an inclination angle of 25° or more and 70° or less with respect to the axial direction of the fiber guide 101.