Tire Bead Wire Spiral Bonding for Internal-Diameter Control
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Solution Overview
Problem
Existing tire manufacturing methods result in variations in the internal diameter of the bead, which can affect the fitting of the tire onto a rim.
Innovation Solution
A tire manufacturing method involving the use of a bonding roller supported by a piston rod to press and move a bead wire in a radial direction parallel to the core's rotation axis, forming a spiral shape on the tire configuration member, with a pressing force ranging from 3N to 100N, to stabilize the internal diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional bead manufacturing methods are used, then the manufacturing process is simple, but the internal diameter of the bead varies
Solution Approach 1:
The pressing device is designed to move dynamically during the bead formation process. The pressing member moves in the radial direction of the core while maintaining parallel pressing, creating a dynamic bonding process that ensures consistent internal diameter. This dynamic movement allows the pressing force to be applied uniformly along the spiral path of the bead wire.
Solution Approach 2:
The pressing force is controlled within a specific range (3N to 100N) to optimize the bonding of bead wire to the tire configuration member. By controlling the pressing force parameter and the movement trajectory in the radial direction, the internal diameter consistency is improved without excessive device complexity.
2Strength
If the bead wire is pressed with high force, then the bonding strength increases, but the internal diameter variation increases
Solution Approach 1:
Instead of applying high pressing force statically, the pressing device moves dynamically in the radial direction while applying controlled force (3N to 100N). This dynamic approach distributes the bonding action along the spiral path, maintaining both bonding strength and internal diameter consistency.
Solution Approach 2:
The pressing action is extended from a single-point static press to a multi-dimensional dynamic process. The pressing member moves in the radial direction while the bead wire is fed in the axial direction, creating a spiral bonding path that ensures uniform bonding strength and consistent internal diameter throughout the bead.
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 effectively suppresses variations in the internal diameter of the bead, ensuring proper fitting of the tire onto a rim by maintaining a consistent internal diameter during the manufacturing process.
Implementation Method 1
a bonding roller supported by a piston rod of an air cylinder provided parallel to the rotation axis line
Implementation Method 2
bonding a bead wire to an outside face of a tire configuration member including an un-vulcanized rubber
Data Source
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AI summary
A method of manufacturing a tire configured by bonding a bead wire to an outside face of a tire configuration member including an un-vulcanized rubber supported from an inside by a core, including pressing the bead wire against the outside face by pressing parallel to a rotation axis line of the core, and moving the bead wire in a radial direction of the core while maintaining the parallel pressing state so as to bond in a spiral shape and form a bead.