Tyre Bead Reinforcement via Curved Deposition
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Solution Overview
Problem
Conventional tyre manufacturing processes require separate production and assembly of components, leading to inefficiencies and potential defects in the reinforcing structure at the bead region, particularly with complex geometries.
Innovation Solution
A process involving the sequential deposition of deformed pieces from a continuous reinforcing band-like element on a toroidal support along a predetermined curvilinear path, ensuring homogeneous and uniform reinforcing structures at the bead region without overlapping or gaps, using a device with gripping and deformation capabilities to adapt pieces to the curvature of the support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional separate production and assembly of tyre components is used, then manufacturing flexibility is maintained, but manufacturing efficiency decreases and defects in reinforcing structure increase
Solution Approach 1:
The patent merges the production and assembly operations into a single integrated process where reinforcing elements are deposited directly onto the toroidal support in their final positions, eliminating the need for separate production and assembly steps. This combining of operations directly improves manufacturing efficiency while reducing defects in the reinforcing structure at the bead region.
2Manufacturing precision
If reinforcing elements are deposited without deformation adaptation, then deposition speed is maintained, but placement precision deteriorates causing overlapping or gaps
Solution Approach 1:
The patent applies preliminary deformation to the reinforcing elements before deposition, pre-shaping them to match the curvature of the toroidal support. This preliminary action ensures that when the elements are deposited, they automatically conform to the support geometry without requiring complex real-time adjustment mechanisms, thereby achieving high placement precision while keeping the deformation mechanism relatively simple.
Solution Approach 2:
The patent specifically addresses the curvature of the toroidal support by deforming the reinforcing elements to match this curved geometry. The deformation process adapts the elements to the specific curvature of the support, ensuring precise placement along the curvilinear path and eliminating overlapping or gaps that would occur with straight elements on a curved surface.
3Manufacturing precision
If deformed pieces are deposited sequentially along curvilinear path, then uniformity of reinforcing structure is improved, but deposition time increases
Solution Approach 1:
The patent employs continuous deposition along the curvilinear path of the toroidal support, with the depositing device moving continuously to place deformed reinforcing elements in sequence. This continuous action maintains uniformity of the reinforcing structure while minimizing idle time between deposition steps, effectively reducing the overall deposition time compared to intermittent or batch processes.
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 method enables the production of high-quality tyres with improved performance by ensuring precise placement and adherence of reinforcing elements, reducing defects and enhancing the uniformity and homogeneity of the reinforcing structure at the bead region.
Implementation Method 1
deforming the piece according to the curvature of a deposition part of the deposition path intended to receive the piece
Implementation Method 2
depositing the deformed piece at the deposition part
Data Source
AI summary
A process and apparatus for manufacturing tires for vehicle wheels, includes building, on a toroidal support, a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with annular anchoring structures, the building step of the carcass structure includes forming at least one reinforcing structure, operatively associated with the annular anchoring structures through deposition on the toroidal support of at least one reinforcing element along a predetermined curvilinear deposition path. The deposition of the at least one reinforcing element includes the steps of: cutting to size a piece of at least one reinforcing continuous band-like element fed by a feeding device along a predetermined feeding direction, deforming the piece obtained according to the curvature of a deposition part of the deposition path intended to receive the piece, and depositing the deformed piece at the deposition part.