Fiber Bundle Concentrator Same-Direction Roller Drive

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Solution Overview

Problem

In fiber bundle concentrating devices, foreign materials like cotton fly can be drawn between the counter shaft and the bottom roller due to opposite rotation directions, leading to inefficiencies and potential contamination.

Innovation Solution

A compacting unit with a suction portion and a bottom delivery roller, where the counter shaft rotates in the same direction as the feeding bottom roller, and is connected through a power transmission device to ensure both rollers rotate in the same direction, preventing foreign material entry.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the counter shaft rotates in the opposite direction to the bottom roller, then the fiber bundle can be fed through the drafting mechanism, but foreign materials are likely to be drawn between the counter shaft and the bottom roller

Engineering Contradiction:

Improvefiber bundle feedingVSAvoidforeign material contamination

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the rotation direction relationship between the counter shaft and bottom roller. Instead of rotating in opposite directions, both the counter shaft and bottom roller now rotate in the same direction, which prevents foreign materials from being drawn between them while still enabling fiber bundle feeding

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If the counter shaft is driven independently of the feeding bottom roller, then the rotation control is flexible, but the mechanism complexity increases

Engineering Contradiction:

Improverotation control flexibilityVSAvoiddriving mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the driving mechanisms by making the counter shaft and bottom roller rotate in the same direction through a unified power transmission system. This reduces the complexity of independent driving mechanisms while maintaining the flexibility of rotation control through the gear transmission ratio adjustment

Inventive Principle:

Principle #5Merging (Combining)

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 effectively prevents foreign materials from entering between the rollers, enhancing the concentration process and reducing contamination, while maintaining a compact design without requiring additional components.

Implementation Method 1

a suction portion that draws in and concentrates a fiber bundle fed from a pair of feeding rollers in a feeding direction

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentEP4527998A1Fiber bundle concentrating device in spinning frame

Publication Date: 2025.03.26 TOYOTA INDUSTRIES CORP

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AI summary

In a fiber bundle concentrating device (20), a counter shaft (30) rotates in the same rotation direction (R1) as a front bottom roller (112) and transmits rotation of the counter shaft to a bottom delivery roller (23) through a power transmission device (40) such that the bottom delivery roller rotates in the same rotation direction (R3) as the front bottom roller (112).