Tyre Component Deposition Anomaly Detection via Position Monitoring
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Solution Overview
Problem
Conventional tyre manufacturing processes face challenges in detecting deposition anomalies of continuous elongated elements during the manufacturing of tyre components, leading to geometric irregularities and potential waste, as existing methods are sensitive to forming support rotation speed and lack sensitivity in identifying excess or lack of material.
Innovation Solution
A method involving the calculation of a mobile sum of position differences between successive sampling times, compared to predetermined threshold values, to detect anomalies in the deposition process, enhancing sensitivity and reliability by emphasizing position variations and discriminating between geometric and structural irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional detection methods are used to monitor deposition during tyre component manufacturing, then the process can continue without interruption, but deposition anomalies and geometric irregularities go undetected leading to waste
Solution Approach 1:
The patent applies preliminary action by detecting deposition anomalies during the manufacturing process itself, before the tyre component is completed. The system monitors the position of the continuous elongated element as it is being deposited and placed on the forming support, enabling early detection of irregularities such as excess or lack of material, breaks, or misalignments. This allows for immediate intervention before waste is generated.
Solution Approach 2:
The patent implements feedback by continuously monitoring the position of the pressing member and the deposited material during the manufacturing process. The system compares the actual position data against expected parameters and provides real-time feedback to detect anomalies. This feedback mechanism enables the system to identify deposition irregularities as they occur, allowing for immediate corrective action to prevent material waste.
2Measurement precision
If existing detection methods are used, then the manufacturing process remains simple, but the sensitivity to detect excess or lack of material is insufficient
Solution Approach 1:
The patent uses an intermediary approach by introducing a detection system that monitors the position of the pressing member and the deposited material. This intermediary detection layer acts as a mediator between the deposition process and the quality control outcome, providing enhanced sensitivity in detecting anomalies such as excess or lack of material without requiring complex intervention in the core manufacturing process.
Solution Approach 2:
The patent replaces simple mechanical detection methods with a more sophisticated detection system that uses position monitoring and data processing. Instead of relying on basic mechanical sensors, the system uses precise position measurement of the pressing member and computational analysis to detect deposition anomalies, thereby increasing measurement precision while accepting increased system complexity.
3Reliability
If detection methods sensitive to forming support rotation speed are used, then detection may occur, but the results vary with rotation speed reducing reliability
Solution Approach 1:
The patent applies dynamics by making the detection system adaptive to varying forming support rotation speeds. The system dynamically adjusts its monitoring parameters and analysis methods based on the current rotation speed, ensuring consistent anomaly detection regardless of speed variations. This dynamic adaptation maintains detection reliability across different operating conditions.
Solution Approach 2:
The patent uses parameter changes by adjusting the detection criteria and analysis parameters based on the forming support rotation speed. The system modifies its detection thresholds, sampling rates, and evaluation parameters to account for speed variations, thereby maintaining consistent detection capability across different rotation speeds and eliminating rotation speed dependency from the detection reliability.
Data Source
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AI summary
The invention concerns a method an equipment for controlling a manufacturing process of a component of a tyre for vehicle wheels, wherein at least one continuous elongated element (3) fed by a supplying member (4,5) is placed on a forming support (2) by means of at least one pressing member (6,8,7) active on said at least continuous elongated element (3) along an application direction (A). During the manfacturing of the component of the tyre it is provided to: - acquire at successive sampling times Ti, the value Pi of a quantity indicative of the position of the pressing member (6,8,7) along the application direction (A), where i is an integer greater than or equal to 1, Ti = i* 1/f and f is the sampling frequency.