Tire Joint Distribution Control for Evenness Optimization
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Solution Overview
Problem
Existing tire manufacturing processes lack control over the distribution and positioning of building joints and preparation joints, leading to unevenness and potential integrity issues in the tire structure, affecting geometric evenness, mass distribution, and stiffness uniformity.
Innovation Solution
A method is developed to control the distribution of building joints and preparation joints using an algorithm that generates a joint-distribution model, optimizing the relative and mutual position of these joints to improve tire evenness, specifically by calculating and controlling the deposition of selected components to achieve desired parameters such as Radial Runout and Radial Force Variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If building joints and preparation joints are distributed without control in existing manufacturing processes, then production speed is maintained, but tire evenness and structural integrity deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-calculating the optimal distribution of building joints and preparation joints before tire manufacturing. The algorithm determines the relative positions of joints in advance, ensuring evenness is optimized before the actual building process begins, rather than adjusting during production.
Solution Approach 2:
The patent implements feedback by using a control system that monitors and adjusts the distribution of building joints and preparation joints based on calculated optimal positions. The system compares actual joint positions with target positions and makes real-time adjustments to maintain evenness standards throughout production.
2Reliability
If the relative position of building joints and preparation joints is optimized using an algorithm, then tire evenness and quality consistency improve, but manufacturing process complexity increases
Solution Approach 1:
The control system continuously monitors joint positions and compares them against optimal positions calculated by the algorithm, providing real-time feedback to adjust the manufacturing process and maintain consistent quality across production batches.
Solution Approach 2:
The algorithm optimizes specific parameters such as the relative angular position and linear distance between building joints and preparation joints. By systematically varying and controlling these parameters, the system achieves improved tire evenness and quality consistency.
3Strength
If control is implemented over the distribution and positioning of building joints and preparation joints, then tire structural integrity and evenness improve, but production time and process complexity increase
Solution Approach 1:
The optimal joint distribution is calculated before manufacturing begins, allowing the production process to proceed efficiently without interruptions for adjustments. This pre-planning ensures structural integrity is built into the tire from the start rather than requiring rework later.
Solution Approach 2:
The patent replaces manual or trial-and-error joint positioning with an automated algorithmic system that calculates optimal positions. This substitution of mechanical/manual processes with computational methods reduces production time while improving structural integrity.
Data Source
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AI summary
A method of controlling building of a tyre, comprises: defining an assembly of selected components including an assembly of selected joints comprising at least two building joints (GCi) and at least one preparation joint (GPj); calculating the relative position of the selected joints the relative position of the at least one preparation joint (GPj) on the respective component being known, using at least one algorithm adapted to optimise the value of at least one first parameter describing the tyre evenness; controlling deposition of the selected components comprising the selected joints for obtaining the calculated relative position of the selected joints themselves. The invention also relates to a group of at least one first and second tyre belonging to the same production batch.