Bead Breaking Unit Automatic Extraction Mechanism
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Solution Overview
Problem
Existing bead breaking units for tire changing machines require significant manual effort for blade extraction after bead breaking, especially for large wheels, and can be inefficient when the blade gets trapped, often necessitating multiple operators and increased time and personnel usage.
Innovation Solution
A bead breaking unit with a rotatable arm and actuator system that includes temporary coupling means and selection mechanisms, allowing the arm to automatically move from a work position to an away position after bead breaking, reducing manual labor and enabling versatile use based on tire type and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual extraction of the blade is used after bead breaking, then the device structure remains simple, but significant physical effort is required by the operator especially for large wheels
Solution Approach 1:
The system performs self-service by automatically extracting the blade from the wheel using the actuator cylinder and arm mechanism, eliminating the need for operator intervention and physical effort during blade extraction
Solution Approach 2:
The manual mechanical extraction process is replaced with an automated actuator cylinder system that uses fluid pressure to move the arm and extract the blade automatically
2Productivity
If manual blade extraction is required, then fewer mechanical components are needed, but multiple operators may be necessary when the blade gets trapped between tyre bead and rim edge
Solution Approach 1:
The system automatically handles blade extraction without requiring additional operators, even when the blade becomes trapped, by using the actuator to apply force and free the blade
Solution Approach 2:
The system provides operational feedback through the actuator mechanism that allows operators to monitor the extraction process and intervene if necessary, improving reliability without requiring constant manual assistance
3Ease of operation
If the arm is freely rotatable during idle position, then the device is easier to position, but the arm may move unpredictably during operation
Solution Approach 1:
The arm positioning system transitions from a static fixed position to a dynamic controlled position, allowing the arm to be freely positionable during idle states while maintaining stable, controlled positioning during operational states through the actuator mechanism
Data Source
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AI summary
The bead breaking unit (1) for tyre changing machines comprises an arm (2) having a bead breaking tool (4) and associated rotatable with a supporting structure (3), actuator means (6) having a mobile element (7) associated sliding with the arm (2), dragging means (10) for dragging the arm (2), associated with the mobile element (7) and suitable for operating during the movement of the mobile element (7) from an extracted position to a retracted position to bring the arm (2) to the work position, temporary coupling means (10, 12, 13, 14, 15) between the mobile element (7) and the arm (2), and selection means (11) associated with the temporary coupling means (10, 12, 13, 14, 15) and suitable for operating/disconnecting the temporary coupling means (10, 12, 13, 14, 15).