Tyre-changing machine hooking tool tilting mechanism
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Solution Overview
Problem
Existing tyre-changing machines are not always practical and easy to use, as the hooking tool positioning is not perfect, leading to inefficient tyre removal and fitting processes, which results in high labour and maintenance costs.
Innovation Solution
A tyre-changing machine with a supporting frame, a rotating clamping device, and a hooking tool that can tilt around a parallel axis, allowing the hooking tool to be easily inserted between the tyre bead and the rim, facilitating easier bead detachment and reducing tyre deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hooking tool is positioned with rotation axis tangent to the wheel rim, then the bead does not undergo heavy stresses and tyre deformation is prevented, but the hooking tool positioning is not perfect and the machine is not easy to use
Solution Approach 1:
The hooking tool is made rotatable around an axis orthogonal to the wheel rotation axis, allowing dynamic adjustment of the tool's orientation during the bead removal process. This enables the tool to maintain optimal positioning relative to the moving bead while preventing excessive tyre deformation through controlled rotation during operation.
Solution Approach 2:
The inclination angle of the hooking tool is made variable through rotational movement, allowing the operator to adjust the tool's orientation parameter to match the specific geometry of different tyre-bead-rim assemblies. This parameter adjustment enables perfect positioning for each operational context while maintaining deformation prevention.
2Device complexity
If the pushing tool inclination is fixed, then the machine structure is simpler, but the pushing tool cannot exercise perfect thrust on the bead in all cases
Solution Approach 1:
The pushing tool is equipped with tilting means that allow dynamic adjustment of its inclination angle during operation. This enables the pushing tool to adapt its orientation to the specific geometry of the tyre bead and rim, ensuring perfect thrust application for effective bead breaking without requiring complex reconfigurable mechanisms.
Solution Approach 2:
The inclination angle of the pushing tool is made variable through the tilting mechanism, allowing operational adjustment of this critical parameter to optimize the thrust vector for different tyre sizes, bead positions, and rim geometries, thereby improving operational effectiveness while maintaining relatively simple device structure.
3Productivity
If the hooking tool is inserted between the bead and rim edge to grip the bead, then the bead can be removed from the wheel rim, but the tool positioning is not perfect leading to inefficient operations
Solution Approach 1:
The hooking tool's rotatable mounting allows it to dynamically adjust its orientation as it moves between the bead and rim edge during insertion and gripping operations. This dynamic positioning capability ensures the tool maintains perfect alignment with the bead geometry throughout the removal process, eliminating positioning errors and improving operational efficiency.
Solution Approach 2:
The rotational degree of freedom of the hooking tool enables real-time adjustment of its angular parameter during operation, allowing precise positioning relative to the bead-rim interface. This parameter adjustment ensures optimal gripping geometry for efficient bead removal while maintaining ease of operation.
Data Source
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AI summary
A tire changing machine (1) comprising a frame for a rotating clamping device (3) suitable for supporting a wheel and place it in rotation around a work axis (A), a hooking tool (4) for hooking the tyre which is associable with the frame and is provided with an elongated portion (5) to remove the bead, first sliding means (S) associable with the frame and suitable for moving one between the rotating clamping device (3) and the hooking tool (4) along a first direction (D) substantially parallel to the portion of the tool, second sliding means associable with the frame and suitable for moving the rotating clamping device and/or the hooking tool along a second direction (E) substantially orthogonal to the portion of the tool, and also tilting means of the rotating clamping device, characterized in that the tilting means are suitable for rotating around a tilting axis (B) parallel to the second direction (E).