A combined tire-disassembling device is provided, and includes a first shaft with a pressing wheel at an end of the first shaft, and a second shaft with a disassembling and assembling hook at a first end of the second shaft, where a combined frame is provided on the first shaft, a shaft hole matched with the second shaft is provided in the combined frame, one end of a driving oil cylinder of second shaft is connected with the second end of the second shaft, and the other end of the driving oil cylinder of second shaft is connected with the combined frame. A large horizontal tire changer is further provided, which includes a base platform, a sliding platform provided at one end of the base platform, a chuck assembly and a tire disassembling mechanism a hydraulic driving device and an operating console.

The present invention concerns a tyre-changing machine provided with a basic structure that can rest on the ground, a retaining and rotation unit mounted on an upper part of the structure and adapted to retain and set the rim (C) of a wheel (R) in rotation around an axis of rotation of the wheel (Z-Z) and a holding column associated with the retaining and rotation unit and intended to support a tool for mounting/disassembling a tyre (P) onto/from the rim (C) of the wheel (R). Advantageously, the tool comprises a hooked end which can rotate passively around an axis of rotation (X-X) orthogonal to the axis of rotation of the wheel (Z-Z).

A machine (M) for mounting and demounting a tyre (P) relative to a corresponding rim (C) of a vehicle wheel (R) comprises a wheel-holder unit (200) that is movable in rotation about a vertical axis of rotation (Y) and movable in translation along an axis of translation (X) towards and away from the machine (M). The machine (M) comprises a main arm (400) and a working unit (500) connected to the main arm (400) and including a first arm (501a) pivoted to the main arm (400) at a hinge point (F) and a first sidewall pressing tool (502a) which is configured to come into abutment against a sidewall of the tyre (P) of the wheel (R) mounted on the wheel-holder unit (200) and which is connected to the first arm (501a). The main arm (400) is movable by translation parallel to the horizontal axis of translation (X) towards and away from a column (101) to keep the hinge point (F) vertically aligned with the vertical axis of rotation (Y) of the wheel-holder unit (200), responsive to a movement in translation of the wheel-holder unit (200).

A machine (M) for mounting and demounting a tyre (P) relative to a corresponding rim (C) of a vehicle wheel (R) comprises a column (100) including a slideway (101) to which there is slidably coupled a tool holder carriage (300) that includes a first arm (401) with a demounting tool and a mounting tool (402, 403) connected to it. The first arm (401) runs along a first, horizontal sliding axis (X1). The tool holder carriage (300) also comprises a second arm, provided with a bead seater tool (502) and slidable along a second, horizontal sliding axis (X2) that is spaced from the first sliding axis (X1), and a third arm (601) with a bead breaker disc (602) connected to it.

A machine for fitting and removing a tyre from a corresponding rim of a wheel of a vehicle, comprising: a wheel-holder unit rotating about a first axis (A) and slidably coupled to a groove provided in a base; a column; an upper operating head, provided with at least one upper fitting tool, at least one further tool, angularly spaced from the upper fitting tool, by a predetermined angle, and a wall pressing tool that can be placed in a working position which is operatively in contact with the wheel simultaneously with the upper fitting tool.

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.

A machine (1) configured to remove and mount a tyre from and on a respective rim of a vehicle wheel (2), comprises: an operating arm (4) directed along a longitudinal orientation; a head (5) supported by the operating arm (4); a first tool and a second tool. The first tool is connected to the head (5) and projects in a first direction; the second tool is connected to the head (5) and, in a first operating configuration of the head (5), is disposed in a first position where it projects in a second direction, opposite to the first direction. The second tool is pivoted to the head (5) to rotate about an axis of tilt (406′) transverse to the longitudinal orientation (402) to move from the first position to a second position, corresponding to a second operating configuration of the head (5) and tilted upside down relative to the first position, to project in the first direction.

A tyre changing machine (1), configured to remove a tyre from a respective rim of a vehicle wheel (2), comprises an operating arm (4) which includes: a supporting structure (401); a head (5) movable along a longitudinal axis (402) relative to the supporting structure (401); a removal tool (403) pivoted to the head (5) to rotate relative thereto about an axis of oscillation (405′) transverse to the longitudinal axis (402); a driving member (6) movable along an operating axis (402′) parallel to the longitudinal axis (402) relative to the supporting structure (401) and to the head (5), and articulated to the removal tool (403) at an operating point (P) which is spaced from the axis of oscillation (405′); an actuator (407) comprising a stationary member (407a), connected to the supporting structure (401), and a movable member (407b), adapted to drive the removal tool (403) in rotation and in translation; a coupling member (7) coupled to the supporting structure (401), to the head (5) and to the driving member (6). The movable member (407b) of the actuator (407) is connected to the driving member (6) to directly drive it along the operating axis (402′).

A tyre changing machine (1), configured to remove a tyre from a respective rim of a vehicle wheel (2), comprises an operating arm (4) which includes: a supporting structure (401); a head (5) movable along a longitudinal axis (402) relative to the supporting structure (401); a removal tool (403) pivoted to the head (5) to rotate relative thereto about an axis of oscillation (405) transverse to the longitudinal axis (402); a driving member (6) movable along an operating axis (402) parallel to the longitudinal axis (402) relative to the supporting structure (401) and to the head (5), and articulated to the removal tool (403) at an operating point (P) which is spaced from the axis of oscillation (405); an actuator (407) comprising a stationary member (407a), connected to the supporting structure (401), and a movable member (407b), adapted to drive the removal tool (403) in rotation and in translation; a coupling member (7) coupled to the supporting structure (401), to the head (5) and to the driving member (6). The movable member (407b) of the actuator (407) is connected to the driving member (6) to directly drive it along the operating axis (402).

A tyre changing apparatus (1) for demounting and mounting a tyre relative to a respective rim of a vehicle wheel (2) comprises: a frame (10); a chuck (11), connected to the frame (10) to rotate about an axis of rotation (A); a working tool (12), connected to the frame (10) and movable towards and away from the chuck; an electric motor (13), connected to the chuck (11) to impart a rotation speed and a working torque to it; a controller (14), including a power unit (141) configured to supply voltage and current as a function of a drive signal (101); a processing unit (142) configured to generate the drive signal (101) and programmed to derive a control parameter (102) representing the working torque delivered to the electric motor (13) and to apply a torque-limiting function as a function of the control parameter (102). The processing unit (142) is programmed to derive an activation parameter and, as a function of the activation parameter, to switch between an activated configuration, in which the torque-limiting function is enabled, and a deactivated configuration in which the torque-limiting function is disabled.