Bead Breaking Unit with Adjustable Blade Tilting
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Solution Overview
Problem
Existing bead breaking units for tire changing machines lack the ability to simplify and speed up blade inclination and tilting adjustments, making them inefficient for varying tire hardness and types.
Innovation Solution
A bead breaking unit with oscillating and tilting mechanisms, featuring adjustable blade angles and a crank mechanism for easy positioning, allowing for optimal blade alignment based on tire hardness, using a supporting structure with integral plates and a spring for tilting assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blade inclination adjustment is made manually for different tire types, then bead breaking effectiveness is improved, but adjustment time and operational complexity increase
Solution Approach 1:
The blade assembly is made dynamically adjustable through a positioning mechanism that allows the blade to be set at multiple predefined angular positions (e.g., 21° and 27°) relative to the resting surface. This enables quick adaptation to different tire hardness levels without manual reconfiguration, resolving the contradiction between effectiveness and adjustment time.
Solution Approach 2:
The system changes the angular parameter of the blade inclination to optimize bead breaking for different tire types. By providing predefined angular positions that correspond to different tire hardness levels, the system allows rapid parameter adjustment without complex manual intervention, addressing both effectiveness and time efficiency.
2Manufacturing precision
If blade inclination is adjusted for optimal tire contact, then bead breaking precision is improved, but device complexity increases
Solution Approach 1:
The positioning mechanism pre-establishes correct angular positions for the blade (e.g., 21° and 27°) that are optimized for different tire hardness levels. This preliminary configuration eliminates the need for complex real-time adjustments during operation, achieving precision without excessive complexity.
Solution Approach 2:
The system incorporates self-aligning features where the blade positioning mechanism automatically guides the blade to the correct angular position relative to the resting surface. This self-service capability ensures precise alignment without requiring complex external adjustment apparatus.
3Ease of operation
If tilting mechanism is added to assist blade insertion, then ease of operation is improved, but device complexity and cost increase
Solution Approach 1:
The tilting mechanism is integrated with the existing blade positioning system, combining the angular adjustment function with the tilting assistance function in a unified mechanism. This merging approach provides ease of operation without proportionally increasing overall device complexity.
Solution Approach 2:
The positioning mechanism acts as an intermediary that facilitates smooth blade insertion by providing controlled tilting motion. This intermediary function reduces the direct mechanical complexity required for blade insertion while maintaining ease of operation.
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
Enables faster and more precise bead breaking by allowing simple adjustment of blade inclination and tilting, optimizing the bead breaking process for different tire types and hardness levels, reducing stress on the tire during detachment.
Implementation Method 1
such tilting can be locked by means of a suitable pin lock. Generally speaking, in case of need, such tilting makes it easier to fit the blade between the tyre bead and the edge of the rim.
Data Source
Figure 1
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Figure 4~5
AI summary
The bead breaking unit (1) for tyre changing machines comprises an arm (2) associated revolving with a supporting structure (3), a bead breaking tool (4) associated with the arm (2), movement means (6) operatively associated with the arm (2) and suitable for moving the arm (2) from a disengaging position, wherein the bead breaking tool (4) is substantially moved away from a tyre of a wheel to undergo bead breaking, to an operating position, wherein the bead breaking tool (4) is suitable for engaging on the tyre, the arm (2) having tilting means (7) of the bead breaking tool (4) suitable for allowing the partial rotation of the bead breaking tool (4) when it is engaged on the tyre, adjustment means (11) for adjusting the angular position of said bead breaking tool (4) and activation/deactivation means (12) of said tilting means (7).