Tyre Building Conveyor Belt Positioning Reference
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Solution Overview
Problem
Inaccurate deposition of elongated elements on forming drums in tyre building plants due to variable conveyor belt thickness and imprecise length measurement, leading to quality issues in tyre production.
Innovation Solution
A tyre building plant with a supply device featuring a conveyor belt and a fixed detection element to establish a reference point, allowing precise positioning and cutting of elongated elements, minimizing errors from conveyor belt movement and dimensional variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conveyor belt is used to transport the elongated element, then the element can be supplied continuously to the forming drum, but the variable thickness of the conveyor belt causes inaccurate positioning and deposition of the element
Solution Approach 1:
A detection element fixed to the conveyor belt serves as an intermediary reference marker. This marker is detected by a sensor to establish a known reference position, allowing the system to compensate for belt thickness variations and achieve accurate positioning of the elongated element despite the flexible nature of the conveyor belt
Solution Approach 2:
The system replaces purely mechanical positioning methods with an optical/electronic detection system. A sensor detects the position of the detection element on the conveyor belt, and this information is used to control the cutting and deposition timing, substituting mechanical precision requirements with sensor-based position feedback
2Manufacturing precision
If the elongated element is cut to desired length before deposition, then the tyre components can be accurately sized, but imprecise length measurement leads to quality issues in tyre production
Solution Approach 1:
The detection element is positioned at a known reference distance from the cutting point. The system detects the position of this marker before cutting occurs, allowing preliminary calculation and adjustment of the cutting position to ensure accurate length measurement and subsequent precise cutting of the elongated element
Solution Approach 2:
The sensor provides feedback on the position of the detection element to the control system. This feedback loop allows the system to adjust the cutting timing and position based on the actual detected location, compensating for any variations and ensuring precise length measurement and accurate cutting
Data Source
AI summary
A tyre building plant (1; 100) comprises a forming drum (4) and a supply device (10) for supplying an elongated element (3) towards the forming drum. The supply device comprises at least one conveyor belt (11; 101) which extends in a supply direction (X) between a loading region (12), in which the elongated element is loaded on the conveyor belt and an unloading region (13), a control unit (19) for controlling the loading of the elongated element (3) on the conveyor belt (11; 101), at least a first detection element which is fixed with a first portion (20) of the conveyor belt, a sensor (22) which is fixed and independent with respect to the conveyor belt and which detects the position of the first portion (20) with respect to the supply device. The loading of the elongated element on the conveyor belt is performed when the first portion is at a predefined reference distance from the loading region (12).