Pinch Roll Control With Friction Adaptation for Rolled Product Positioning

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Solution Overview

Problem

Existing methods for positioning rolled products on a cooling bed require experienced operators to determine the correct trigger time and transport speed for the pinch roll, making the process inefficient and unreliable.

Innovation Solution

A control method that uses a model based on the coefficient of friction to determine the trigger time and transport speed, with a measuring device detecting the position or derivation in time of the rolled product to update the coefficient and adapt the process for improved positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If an operator manually determines the trigger time and transport speed, then positioning accuracy can be achieved with experienced operators, but the process becomes inefficient and unreliable

Engineering Contradiction:

Improvepositioning accuracyVSAvoidprocess efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs self-adjustment by automatically determining trigger time and transport speed based on detected rolled product characteristics, eliminating the need for operator intervention and achieving consistent positioning accuracy without manual input

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system uses sensors to detect rolled product characteristics and feeds this information back to the control device, which automatically adjusts trigger time and transport speed parameters to achieve precise positioning while improving process efficiency

Inventive Principle:

Principle #23Feedback

2Reliability

If an experienced operator determines trigger time and transport speed, then reliable positioning is achieved, but the process requires human expertise and becomes less reliable without experienced operators

Engineering Contradiction:

Improvepositioning reliabilityVSAvoidoperational simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The control device automatically determines optimal trigger time and transport speed based on detected rolled product characteristics, making the system self-sufficient and eliminating dependency on operator expertise while maintaining consistent positioning reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system replaces manual operator judgment with automated sensing and control mechanisms, using sensors and control algorithms to determine trigger time and transport speed, thereby achieving reliable positioning without requiring human expertise

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If a fixed model is used for determining trigger time and transport speed, then the control method is simple, but it cannot adapt to variations in rolled product characteristics

Engineering Contradiction:

Improvecontrol method simplicityVSAvoidadaptation to product variations

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The system transitions from static fixed parameters to dynamic adaptive parameters by continuously detecting rolled product characteristics and automatically adjusting trigger time and transport speed in real-time, enabling adaptation to product variations while maintaining control simplicity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control device automatically modifies operational parameters (trigger time and transport speed) based on detected rolled product characteristics, allowing the system to adapt to different product variations without increasing operational complexity

Inventive Principle:

Principle #35Parameter changes

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 approach enables simple, efficient, and reliable positioning of rolled products by automatically determining and adjusting the trigger time and transport speed, ensuring reproducible and deterministic behavior.

Implementation Method 1

a measuring device detects iteratively a position or a derivation in time of the position of the respective rolled product

Methodology Applied

Scientific EffectDoppler effect: Doppler Effect

Data Source

PatentUS10994318B2Sliding transport of rolled product with adaptation of friction

Publication Date: 2021.05.04 PRIMETALS TECH GERMANY GMBH

AI summary

A pinch roll delivers a respective rolled product. A control device opens the pinch roll at a respective trigger time and at a respective transport speed of the respective rolled product. The control device determines the respective trigger time and/or the respective transport speed using a model that depends on a coefficient of friction. After opening the pinch roll, a measuring device detects iteratively a position or a derivation in time of the position of the respective rolled product. The detected positions or the detected derivations in time of the position are provided to the control device. The control device in dependency on the positions or the derivations in time of the position updates the coefficient of friction and uses the updated coefficient of friction for determining the respective trigger time and/or the respective transport speed for the next rolled product delivered by the pinch roll.