Tyre Changing Machine Curvilinear Head Motion
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Solution Overview
Problem
Existing tyre changing machines often experience imperfect grip of the removal tool on the tyre bead, leading to potential jamming and require complex actuator control for efficient operation, resulting in increased complexity and cost.
Innovation Solution
A machine with a simplified structure featuring a single actuator for moving the operating head in a curvilinear sideways motion, combined with a grip tool that moves between idle, fitting, and entrainment configurations, allowing for effective tyre removal without supplementary actuators and minimizing stress on the tyre.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple actuators are used to control the operating head and removal tool, then the tyre removal precision and control are improved, but the device complexity and cost increase
Solution Approach 1:
The patent combines multiple actuators into a single actuator that controls both the operating head movement and the removal tool positioning through a integrated mechanism. This merging reduces the number of separate control systems while maintaining the precision needed for tyre removal operations.
Solution Approach 2:
The single actuator is designed to perform multiple functions: positioning the operating head, controlling the removal tool movement, and coordinating the gripping action. This multi-functional design eliminates the need for separate actuators for each function, simplifying the overall system.
2Device complexity
If a simple structure with single actuator is used, then the device complexity is reduced, but the reliability of tyre bead grip may deteriorate
Solution Approach 1:
The removal tool is designed with dynamic movement capabilities, allowing it to transition between retracted and extended positions while maintaining flexible gripping action. This dynamic design enables the simple structure to adapt to different tyre configurations and maintain reliable bead grip throughout the removal process.
Solution Approach 2:
The patent introduces an intermediary mechanism that connects the single actuator to the removal tool, ensuring force transmission and grip stability. This intermediary element acts as a mediator between the simplified actuator system and the tyre bead, maintaining reliable grip despite the reduced complexity.
Data Source
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AI summary
The machine for removing and fitting tyres and wheel rims for vehicles comprises a supporting structure (2) of clamping and rotating means (3) for clamping and rotating the rim (A) of a vehicle wheel around a rotation axis (C), at least one operating unit (4) which is associated moving with the supporting structure (2) and which comprises at least one operating head (5) for fitting and removing a tyre (B) onto/from the rim provided with a pushing body (12) for pushing at least one portion of the side surface of the tyre (B) and with a grip tool (14) for gripping at least one section of the tyre bead, an actuator element (6) for operating the sideways movement of the operating head (5) with respect to the structure (2) and guide means (9;10) of such sideways movement along a substantially curvilinear direction between a first configuration, in which the operating head (5) is substantially close to the clamping and rotating means (3) and a second configuration, in which the operating head (5) is substantially moved away from the clamping and rotating means (3).