Tire Assembling Device Using Reaction Force for Tool Angular Movement

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Solution Overview

Problem

Existing tire mounting and dismounting machines are complex to produce and require manual control during each work step, and existing solutions that use reaction forces for angular movement are not efficient for quick assembly and disassembly.

Innovation Solution

A device with a sliding extension component and articulated working tool that uses reaction forces from the tire and rim for angular movement, supported by a simple actuation system that moves the extension component along a sliding direction, allowing efficient and quick assembly and disassembly without active angular actuators.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional actuators are used to drive tool angular movement during each work step, then precise control is achieved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvecontrol precisionVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The tool uses the reaction force generated during the work process itself to drive its own angular movement. The reaction force from engaging the tire and rim automatically rotates the tool about the articulation axis, eliminating the need for external actuators to provide rotational control.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces complex mechanical actuator systems with a simpler mechanism where the reaction force directly drives the angular movement. This substitution eliminates multiple actuators, control systems, and associated components while maintaining functional control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If manual control operations are performed during every work step, then precise operation control is achieved, but productivity decreases

Engineering Contradiction:
Improveoperation controlVSAvoidproductivity
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The system performs control operations automatically through the reaction force mechanism. Once the tool engages the workpiece, the reaction force automatically drives the angular movement and positioning, eliminating the need for continuous manual control inputs during each work step.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If complex actuation systems are used for tool angular movement, then control precision is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvecontrol precisionVSAvoidease of manufacture
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent extracts and eliminates the complex actuator systems from the design, retaining only the essential sliding mechanism and articulation. By removing unnecessary components, the design becomes simpler to manufacture while still achieving the required control through the reaction force mechanism.

Inventive Principle:
Principle #2Taking out (Extraction)

4Device complexity

If reaction forces are used to drive tool angular movement, then device complexity is reduced, but assembly and disassembly speed may be affected

Engineering Contradiction:
Improvedevice complexityVSAvoidassembly speed
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The system dynamically adapts to the workpiece geometry through the reaction force mechanism. The tool automatically adjusts its angular position in real-time as it engages different portions of the tire and rim, enabling efficient assembly and disassembly without rigid mechanical guidance systems.

Inventive Principle:
Principle #15Dynamics

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 efficient and quick tire assembly and disassembly with a simpler structure, using reaction forces to move the tool angularly and follow the wheel profile, reducing the complexity of the machine and improving the assembly and disassembly process.

Implementation Method 1

the working tool (4) is articulated to the extension or stem component (3) so as to be angularly movable, in use, with respect to the extension or stem component (3) by means of the reaction force exerted to the working tool (4) by a rim (W) and/or tyre (T)

Methodology Applied
Scientific EffectReaction force: Reaction (physics)

Data Source

PatentEP2987661B1Device for assembling-disassembling a tyred wheel, as well as machine comprising such a device
Publication Date: 2019.10.23 BUTLER ENG & MARKETING SPA
  • EP2987661B1 patent drawingFigure 1~4
  • EP2987661B1 patent drawingFigure 5~7
  • EP2987661B1 patent drawingFigure 8~11

AI summary

The present invention concerns a device for assembling-disassembling a tyred wheel (TW) comprising a support component (2), an extension or stem component (3) connected to the support component (2), a working tool (4) articulated to the extension or stem component (3) and actuation means (9) intended to drive the sliding of the extension or stem component (3) with respect to the support component (2).