Tire Building Drum Winding Length Deviation Control

Solution Overview

Problem

The existing methods for winding tire components onto a tire building drum face challenges due to length deviations, leading to manufacturing inaccuracies and preventing fully automated winding processes.

Innovation Solution

A method involving a servicer with a controllable pressure system and adjustable transport speeds to adjust the length of tire components, ensuring accurate butt splicing by stretching or compressing the material through differential speeds and friction control, allowing for automated and precise winding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual reconnection of material strips is performed to compensate for length deviations, then the winding process can continue, but manufacturing inaccuracies occur and quality deteriorates

Engineering Contradiction:

Improvewinding process continuityVSAvoidlength accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical reconnection operations with an automated control system that uses sensors to detect length deviations and automatically adjusts winding parameters. The control unit processes measurements from length measurement devices and modifies winding speed, tension, and positioning to compensate for deviations without manual intervention, eliminating the need for operator detachment and reconnection operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a feedback control system where length measurement devices continuously monitor the actual length of material strips during winding. The control unit receives real-time measurements, compares them against target values, and automatically adjusts winding parameters to compensate for deviations. This closed-loop feedback mechanism ensures consistent length accuracy throughout the automated winding process.

Inventive Principle:

Principle #23Feedback

2Extent of automation

If fully automated winding is implemented, then productivity increases, but length deviations cause manufacturing inaccuracies

Engineering Contradiction:

Improvewinding automationVSAvoidlength consistency

Core Design Contradiction:

Extent of automationVSManufacturing precision

Solution Approach 1:

The patent replaces manual length adjustment operations with an automated control system that uses sensors to detect length deviations and automatically adjusts winding parameters. The control unit processes measurements from length measurement devices and modifies winding speed, tension, and positioning to compensate for deviations without manual intervention, enabling fully automated winding while maintaining precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent dynamically adjusts multiple winding parameters including winding speed, tension force, and positioning coordinates based on detected length deviations. The control unit modifies these parameters in real-time to compensate for variations in material strip length, ensuring that the final wound product meets specifications even when input materials have deviations.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If length deviations are not compensated, then automated winding is possible, but manufacturing quality deteriorates

Engineering Contradiction:

Improveautomated production speedVSAvoidtire dimensional accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent implements a feedback control system where length measurement devices continuously monitor the actual length of material strips during winding. The control unit receives real-time measurements, compares them against target values, and automatically adjusts winding parameters to compensate for deviations. This closed-loop feedback mechanism ensures consistent length accuracy and tire dimensional accuracy throughout the automated winding process.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent dynamically adjusts multiple winding parameters including winding speed, tension force, and positioning coordinates based on detected length deviations. The control unit modifies these parameters in real-time to compensate for variations in material strip length, ensuring that the final wound product meets specifications and maintains high manufacturing quality.

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

Enables fully automated and high-quality tire manufacturing by compensating for length deviations, ensuring accurate splicing and improving the overall manufacturing quality of vehicle tires.

Implementation Method 1

with a controllable pressure system of the servicer, a friction acting on the first tire component is generated, as a result of which the length of the first tire component can be stretched or compressed

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP2756945B1Method for the manufacture of vehicle tyres with a tyre construction drum

Publication Date: 2016.09.21 CONTINENTAL REIFEN DEUTSCHLAND GMBH

Figure 1~3
Figure 4

AI summary

The method involves determining actual length of tire component (2) that is wound on and passed under tire manufacturing drum (4). A length adjustment of tire component is achieved, while deviation in actual length of tire component is set via control algorithm of different speeds (3,5). The tire component is stretched or compressed while adjustable presser (1) generates acting friction on tire component. The front end (7) and rear end of tire component wound on tire manufacturing drum is spliced together for completing manufacturing of vehicle tire.