Modular Tire Changing Operating Head with Hook Tool
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Solution Overview
Problem
Existing tire-changing machines require specific structural adaptations for different types and often cause unwanted tire bead deformations due to excessive tension during extraction.
Innovation Solution
An operating head with a support arrangement and actuator device that can be easily mounted on various tire-changing machines, featuring a hook-shaped tool with a transformation arrangement to reduce tension by moving along the inner rim profile, and a quick coupling system for easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If actuators are integrated on the mobile arm of the tire-changing machine, then the tool can be moved between bead gripping position and extraction position, but the operating head becomes specific to each machine and hard to adapt for use on different tire-changing machines
Solution Approach 1:
The operating head is divided into separate modular components: the support arrangement and the tool with actuator device can be detached and mounted on different machines. This segmentation allows the same tool assembly to be used across multiple tire-changing machines without requiring machine-specific integration.
Solution Approach 2:
The support arrangement is designed with universal mounting capabilities that can interface with different types of tire-changing machines. The actuator device mounted on the support arrangement can perform the same bead extraction function across various machine models, eliminating the need for machine-specific operating heads.
2Productivity
If the tool presses on the side of the tire to extract the bead above the annular flange, then the tire bead can be removed from the rim, but excessive tension causes unwanted deformations of the tire bead
Solution Approach 1:
The tool features a curved end part that conforms to the curvature of the tire bead and rim flange. This curved geometry allows the tool to engage and extract the bead following its natural arc, distributing force more evenly and reducing localized excessive tension that would cause deformation.
Solution Approach 2:
The actuator device controls the extraction motion parameters, adjusting the speed, force, and trajectory of the tool during bead extraction. By optimizing these parameters, the system achieves efficient bead removal while maintaining tension within safe limits to prevent deformation.
Data Source
AI summary
An operating head for removing and fitting wheel tires for vehicles includes a support arrangement associable with an arm of a tire-changing machine, a removal tool having a substantially hook-shaped free extremity, associated with the support arrangement and moving between a fastening-on position of a section of the bead of a tire of a wheel fixed on the tire-changing machine and a position of extraction of the bead section from the rim of the wheel, and at least an actuator device supported by the support arrangement and associated with the tool, in which the actuator device is suitable for moving the tool between the fastening-on position and the extraction position.