Preloaded Tool Unit for Tire Mounting and Demounting
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Solution Overview
Problem
Existing tire mounting and demounting tools are complex, require precise positioning, and need multiple parts or drives, making them difficult to control and inefficient for both mounting and demounting processes.
Innovation Solution
A mounting/demounting tool unit with a pivotally mounted hook on a tool carrier arm, featuring a tensioning and positioning mechanism that holds the tool in a resting/operating position, allowing for simple construction and reduced control efforts, enabling both mounting and demounting with a single tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hook-shaped demounting tool is used to engage the tyre bead, then the tool can grip and move the tyre bead out of the rim, but the tool must be positioned very close to the rim edge which requires precise control and increases control efforts
Solution Approach 1:
A positioning element is introduced as an intermediary component between the demounting tool and the tool carrier arm. This positioning element automatically engages with a corresponding positioning surface on the tool carrier arm, serving as a mediator that automatically establishes the correct spatial relationship between the tool and rim without requiring precise manual positioning or complex control mechanisms
Solution Approach 2:
The demounting tool is designed to be self-positioning through the positioning element that automatically engages with the tool carrier arm. The tool automatically orients itself in the correct position relative to the rim edge through this self-service mechanism, eliminating the need for external precise positioning control
2Adaptability or versatility
If multiple separate tools or complex mechanisms are used for mounting and demounting, then specific functions can be performed, but the device complexity increases and control efforts increase
Solution Approach 1:
The tool carrier arm is designed with universal functionality to perform both mounting and demounting operations. By integrating the positioning element that enables precise tool positioning and using a single tool unit with hook element, the system achieves multi-functionality without requiring separate specialized tools for each operation, thereby reducing overall device complexity
Solution Approach 2:
The positioning function and the demounting/mounting function are merged into a single integrated system. The positioning element is combined with the tool carrier arm structure, and the demounting tool with hook element is integrated onto the same carrier arm, eliminating the need for separate positioning mechanisms and separate tools
3Productivity
If the tool is positioned close to the rim edge for effective engagement, then demounting can be performed, but the tool may pivot uncontrolled towards the rim requiring additional control efforts
Solution Approach 1:
The complex mechanical control system for precise tool positioning is replaced by a simple geometric positioning mechanism. The positioning element on the tool engages with a positioning surface on the tool carrier arm, creating a deterministic mechanical constraint that automatically maintains stable tool positioning relative to the rim without requiring active control systems
Solution Approach 2:
The correct positioning relationship between the tool and tool carrier arm is established in advance through the positioning element and positioning surface design. This preliminary geometric configuration ensures that when the tool is brought close to the rim edge for effective engagement, it maintains stable orientation and prevents uncontrolled pivoting
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
The solution simplifies the tire mounting and demounting process by reducing the need for precise positioning and minimizing the number of parts, enhancing efficiency and ease of use while preventing tool rotation towards the rim during demounting and allowing secure grip during mounting.
Implementation Method 1
The mounting support tool element (310) is supported by the bead breaker tool element (210), when in the operative position, such that unintentional movement of the mounting support tool element may be omitted
Data Source
AI summary
The present invention relates to a mounting/demounting tool unit for mounting a tyre to or demounting a tyre from a rim of a vehicle wheel and for being adapted to be attached to a tyre mounting/demounting machine, including: a longitudinally extending tool carrier arm having a center line and a first as well as a second end, a mounting/demounting tool having a first as well as a second end and a hook arranged in the region of the second end, and being pivotally mounted to the tool carrier arm in the region of its first end, wherein means for reversibly urging the mounting/demounting tool in a resting/operating position and for positioning the mounting/demounting tool in said resting/operating position are provided.