Tyre Mounting Device Automatic Position Adjustment

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Solution Overview

Problem

Conventional tyre mounting and demounting machines are complex, requiring high control efforts and precise positioning, which increases operational time and complexity, especially when handling both mounting and demounting tasks.

Innovation Solution

A method and machine design that simplifies control by using a movable mounting/demounting device with automatic adjustment based on an initial reference position, allowing manual adjustment in one direction while automatically adjusting in another, reducing the need for exhaustive control and minimizing machine complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple tool carrier arms are provided with separate mounting and demounting tools, then the machine can perform both mounting and demounting operations, but the device complexity and control effort increase significantly

Engineering Contradiction:
Improvecapability to perform mounting and demounting operationsVSAvoidnumber of tool carrier arms and tools
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A single tool carrier arm is designed to carry both mounting tools and demounting tools, allowing the same physical structure to perform multiple functions. The control unit selectively activates appropriate tools based on the operation type, eliminating the need for separate dedicated tool carrier arms for mounting and demounting operations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines mounting tools and demounting tools onto a single tool carrier arm structure. This merging of previously separate functions into one integrated system reduces the overall number of components and simplifies the mechanical design while maintaining full operational capability for both mounting and demounting tasks.

Inventive Principle:
Principle #5Merging (Combining)

2Measurement precision

If precise positioning control is implemented for tool selection and placement, then operation accuracy improves, but control effort and operational time increase

Engineering Contradiction:
Improvepositioning accuracy of mounting/demounting deviceVSAvoidoperational time for tool positioning
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The control unit automatically determines the appropriate tool position and activates the corresponding tool without requiring manual intervention for tool selection or positioning. The system self-manages the complex coordination of multiple tools on the carrier arm, reducing both control effort and operational time while maintaining precise positioning accuracy.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The control unit monitors the position and state of the tool carrier arm and automatically adjusts tool activation timing based on real-time position feedback. This closed-loop control ensures precise tool positioning and activation while minimizing the time required for tool changes and positioning operations.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3501862B1Method for mounting and demounting a tyre to and from a wheel rim
Publication Date: 2022.08.03 SNAP ON EQUIP SRL
  • EP3501862B1 patent drawingFigure 1
  • EP3501862B1 patent drawingFigure 2
  • EP3501862B1 patent drawingFigure 3

AI summary

The invention relates to a method for mounting/demounting a tyre (T) on a rim (R). The method comprises the steps of: determining an initial reference position for the mounting/demounting device (U1, U2), said initial reference position being proximal to an edge (E) of the wheel rim (R); linking the position of the mounting/demounting device (U1, U2) with the initial reference position; adjusting the position of the mounting/demounting device (U1, U2) with respect to either the first or the second direction; continuously detecting the position of the mounting/demounting device (U1, U2) with respect to said either first or second direction; and continuously and automatically adjusting the position of the mounting/demounting device (U1, U2), with respect to the other one of said either first or second direction, at least in dependence of the initial reference position.