Adaptive Guide Roller for Can Changer Sliver Breakage

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Solution Overview

Problem

Existing can changers face difficulties in quickly and reliably changing round cans due to their unstable structure, heavy weight, and varying sizes, leading to potential damage and fluctuations in fiber sliver guidance, which affects the productivity of card production.

Innovation Solution

A device with a slidably mounted turntable and an adaptive guide device that follows the movement of the turntable, featuring pivotable guide rollers to ensure the fiber sliver is always guided perpendicularly to the axis of rotation, preventing sliver breakage and allowing for efficient can changes, especially for larger cans.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the turntable is moved quickly for fast can changeover, then productivity is improved, but the fiber strip may jump off the guide roller causing breakage

Engineering Contradiction:

Improvecan changeover speedVSAvoidfiber strip guidance stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The guide roller is made pivotable rather than fixed, allowing it to dynamically adjust its position and angle in response to turntable movement. This dynamic adjustment maintains proper fiber strip alignment during fast can changeovers, preventing strip breakage while enabling high productivity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The guide roller's pivotable design provides automatic feedback adjustment - as the turntable moves to different positions, the guide roller automatically pivots to maintain the correct perpendicular alignment with the fiber strip path, ensuring continuous reliable guidance without manual intervention.

Inventive Principle:

Principle #23Feedback

2Reliability

If the fiber strip is guided perpendicular to the roller axis, then strip breakage is prevented, but the guide device becomes more complex

Engineering Contradiction:

Improvefiber strip guidance stabilityVSAvoidguide device structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of a complex fixed guide structure with multiple adjustment mechanisms, the invention uses a simple pivotable guide roller that achieves perpendicular alignment through a single rotational degree of freedom, reducing overall device complexity while maintaining reliability.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If the turntable is stationary, then the structure is simple, but the fiber strip guidance changes with can size variations

Engineering Contradiction:

Improveturntable structureVSAvoidfiber strip guidance adaptation

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The guide roller is designed to pivot in response to turntable movement, automatically adapting to different can sizes and positions. This dynamic adjustment capability allows the same simple structure to work with various can dimensions without requiring complex adaptive mechanisms.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP3331792B1Device for filling a can with a sliver

Publication Date: 2019.09.11 TRUETZSCHLER GMBH & CO KG

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AI summary

The present invention relates to a device for filling a can with a sliver produced in a spinning preparation installation, e.g. a drawing frame, carding machine or combing machine. The device is suitable to receive an empty and a full can at the same time, and comprises a depositing head (13) with a rotary plate (14). According to the invention, at least the rotary plate (14) is movably mounted, the device having at least one guide device (40) that can be adapted to the course of the sliver while the rotary plate (14) is moved.