Rotating Bead Breaker Tool for Tire Mounting Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tire mounting-demounting machines require constant operator intervention for bead breaking, leading to potential tire or rim damage and increased production and maintenance costs due to the need for precise manual control of bead breaker rollers.
Innovation Solution
A bead breaker group with a rotatably mounted flat tool having an abutment front and a curved engagement-penetration zone, allowing for precise positioning and automatic penetration between the tire bead and rim flange, reducing operator dependency and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional bead breaker rollers are used with manual control, then the operator can perform bead breaking operations, but constant operator intervention is required and there is risk of tire or rim damage due to imprecise manual control
Solution Approach 1:
The bead breaker tool is designed to automatically position itself between the tire bead and rim flange through its own weight and geometry. The tool self-aligns using the abutment front against the rim flange and the curved engagement-penetration zone naturally guides penetration, eliminating the need for constant operator intervention and reducing manual control errors that could cause damage.
2Extent of automation
If feeler pins and controller are added to automate bead breaker positioning, then automation is improved, but production and maintenance costs increase considerably
Solution Approach 1:
The system achieves automation through the inherent mechanical design of the bead breaker tool itself, which self-positions using its geometry and weight. This eliminates the need for expensive sensors, controllers, and complex automation systems while still providing automatic positioning functionality.
Solution Approach 2:
The invention replaces expensive electronic automation components with a simple, durable mechanical design that achieves the same positioning function through clever use of gravity, geometry, and friction, significantly reducing production and maintenance costs.
3Device complexity
If conventional bead breaker rollers are used, then bead breaking can be performed, but the structure is complex and positioning precision is difficult to achieve
Solution Approach 1:
The bead breaker tool incorporates specific local geometric features including an abutment front for precise positioning against the rim flange and a curved engagement-penetration zone for controlled insertion. These localized structural qualities enable accurate positioning without complex overall system design.
Data Source
AI summary
The present invention relates to a bead breaker group for bead breaking a tire of a tired wheel equipped with rim with bead-engagement flanges, the bead breaker group comprising a support (2, 5) and at least one bead breaker tool (3) mounted for rotation around a pin (4) borne by the support (2, 5), the bead breaker tool being substantially flat and comprising:at least one portion configured as an abutment front (3b, 3d, 3f) against a flange of a rim of a tired wheel to be bead broken; andat least one portion having curved peripheral edge substantially coaxial with the pin (4) and intended to act as an engagement-penetration zone (3a, 3c, 3e) between the flange of a rim and the bead of a tire to be bead broken,the distance between the abutment front (3b, 3d, 3f) and the pin (4) being less than the distance between the pin (4) and the at least one engagement-penetration zone (3a, 3c, 3e).