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US 12,611,897 B2Granted
Tire changing apparatus
AssigneeNexion S.P.A.
InventorGiulio Corghi
Life of this patent
Estimating the term…
Abstract
An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus includes: a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set it in rotation about an axis of rotation; a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre; a hydraulic circuit comprising a pump; a plurality of hydraulic actuators, connected to the hydraulic circuit; the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously.
Claims18
An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus comprises:
- a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set the wheel in rotation about an axis of rotation;
- a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre;
- a hydraulic circuit comprising a pump;
- a plurality of hydraulic actuators, connected to the hydraulic circuit, wherein each actuator of the plurality of actuators defines an internal space and includes a piston which is slidable inside the internal space, wherein the piston divides the internal space into an opening chamber and a closing chamber,
- wherein the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously,
- wherein the hydraulic circuit comprises a rephasing system, configured to automatically realign the actuators of the plurality of actuators, wherein the rephasing system comprises an electronic card and one or more electrovalves positioned in respective one or more realignment branches of the hydraulic circuit, wherein the electronic card is programmed to open the one or more electrovalves, responsive to a predetermined event, to establish additional fluid communication between the actuators of the plurality of actuators, wherein the rephasing system includes a number of electrovalves which is equal to the number of actuators of the plurality of actuators and also includes, for each electrovalve, a calibrated throttle located in the respective realignment branch.
3 more elements
A method for demounting a tyre from a respective wheel rim, comprising the following steps:
- receiving and locking the wheel to a wheel-holder unit;
- rotating the wheel about an axis of rotation by means of the wheel-holder unit;
- moving a plurality of tools, wherein one or more tools of the plurality interact with the tyre to demount the tyre;
- synchronously driving a plurality of hydraulic actuators by means of a hydraulic circuit comprising a pump and connected to the actuators of the plurality of actuators, and
- automatically realigning the actuators of the plurality of actuators, wherein the step of automatically realigning comprises opening one or more electrovalves located in respective one or more realignment branches of the hydraulic circuit to establish fluid communication between the actuators of the plurality of actuators, wherein the one or more electrovalves are opened through an electronic card, responsive to a predetermined event, wherein a number of electrovalves is equal to the number of actuators of the plurality of actuators and wherein for each electrovalve, a calibrated throttle located in the respective realignment branch.
2 more elements
An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus comprises:
- a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set it in rotation about an axis of rotation;
- a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre;
- a hydraulic circuit comprising a pump (9);
- a plurality of hydraulic actuators, connected to the hydraulic circuit, wherein each actuator of the plurality of actuators defines an internal space and includes a piston which is slidable inside the internal space, wherein the piston divides the internal space into an opening chamber and a closing chamber,
- wherein the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously, wherein the hydraulic circuit comprises a rephasing system, configured to automatically realign the actuators of the plurality of actuators, wherein the rephasing system comprises an electronic card and one or more electrovalves positioned in respective one or more realignment branches of the hydraulic circuit, wherein the electronic card is programmed to open the one or more electrovalves, responsive to a predetermined event, to establish additional fluid communication between the actuators of the plurality of actuators, wherein the rephasing system includes, for each electrovalve, a calibrated throttle located in the respective realignment branch.
2 more elements
Dependencies are inferred from the claim text.