Machine for mounting and demounting a tyre relative to a corresponding rim and wheel servicing method

A method for performing a service on a vehicle wheel, comprising the following steps:

• preparing a machine for mounting and demounting a tyre relative to a corresponding rim of a vehicle wheel, the machine comprising:
• a column including a slideway extending along a vertical direction;
• a wheel-holder unit rotating about an axis of rotation, parallel to the vertical direction;
• a tool holder carriage comprising a mounting tool a first arm, a second arm and a third arm;
• a demounting tool connected to the first arm;
• a bead seater tool connected to the second arm;
• a bead breaker disc connected to the third arm;
• wherein the method comprises the following steps:
• moving the tool holder carriage along the slideway from a rest position, where it is away from the wheel-holder unit, to a working position where it is close to the wheel-holder unit from above to operate on the wheel;
• moving the first arm along a first horizontal sliding axis between a rest position, where it is retracted towards the column, and a working position, where it is extracted away from the column so that one between the demounting tool and the mounting tool is inserted between the bead of the tyre and an annular edge of the rim;
• moving the second arm along a second horizontal sliding axis that is spaced from the first horizontal sliding axis, between a rest position, where it is retracted towards the column, and a working position, where it is extracted away from the column so that the bead seater tool can operate on a sidewall of the tyre to apply a flattening pressure thereon.

A machine for mounting and demounting a tyre relative to a corresponding rim of a vehicle wheel, comprising:

• a column including a slideway extending along a vertical direction;
• a wheel-holder unit rotating about an axis of rotation, parallel to the vertical direction;
• a tool holder carriage that is movable along the slideway between a working position, where it is close to the wheel-holder unit from above to operate on the wheel, and a rest position, where it is away from the wheel-holder unit, wherein the tool holder carriage includes:
• a first arm, movable slidably along a first horizontal sliding axis between a rest position, where it is retracted towards the column, and a working position, where it is extracted away from the column;
• a mounting tool, connected to the first arm and configured to be inserted between a bead of the tyre and an annular edge of the wheel rim in order to mount the tyre;
• a demounting tool, connected to the first arm and configured to be inserted between the bead of the tyre and the annular edge of the rim to demount the tyre;
• a second arm, slidably movable along a second horizontal sliding axis, spaced from the first horizontal sliding axis, between a rest position, where it is retracted towards the column, and a working position, where it is extracted away from the column;
• a bead seater tool, connected to the second arm and configured to operate on a sidewall of the tyre to apply a flattening pressure thereon;
• a third arm;
• a bead breaker disc connected to the third arm,
• wherein the third arm is movable by rotation about a horizontal axis transverse to the first horizontal sliding axis to tilt it between a rest position, where the bead breaker disc is distal from the wheel and a working position, where the bead breaker disc is proximal to the wheel.