Back to results
US 2011/0277942 A1Published application
Machine for regeneration of pneumatic tyres
OwnerLeonardo Cappucciniinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerLeonardo Cappucciniinventor
Estimating the term…
There is described a machine (1) for regeneration of pneumatic tyres (2) comprising a beading device (5) for axial locking of the pneumatic tyre to be regenerated in the direction of the revolving axis of the pneumatic tyre (2) which provides an untranslatable bead (6) and a translatable bead (7) in said direction, a work rasp (9) mounted on a spindle (25), inflation means (66) of the pneumatic tyre and a discharge cochlea (77). Said machine further comprises a roughing miller (8) suitable to prepare the pneumatic tyre to a subsequent finishing by means of the rasp (9), said miller (8) being mounted on the same spindle (25) of the rasp (9) and after it, and constituted of a monoblock (27) with discharge channels (28) for chips produced by inserts (29) with a curved profile (30) providing a plurality of planar blades (31) joined by discharge grooves (32) of the chips produced.
A machine for regeneration of pneumatic tyres comprising a beading device for axial locking of the pneumatic tyre to be regenerated in the direction of the revolving axis of the pneumatic tyre which provides an untranslatable bead and a translatable bead in said direction, a work rasp mounted on a spindle, inflation means of the pneumatic tyre and a discharge cochlea, characterized in that it comprises also a roughing miller suitable to prepare the pneumatic tyre to a subsequent finishing by means of the rasp, said miller being mounted on the same spindle of said rasp and after it, and constituted of a monoblock with discharge channels for chips produced by inserts with a curved profile providing a plurality of planar blades joined by discharge grooves of the chips produced.
A miller for roughing a tread of a pneumatic tyre to be regenerated, characterized in that it is constituted of a monoblock with discharge channels for chips produced by inserts with a curved profile which provides a plurality of planar blades joined by discharge grooves for the chips produced.
A process for regeneration of a pneumatic tyre comprising the locking of a beading device of a pneumatic tyre which provides an untranslatable bead and a translatable bead, characterized in that it provides the start of an oil-pressure beading circuit at a predetermined use pressure, the simultaneous opening of two lock solenoid valves to build oil pressure in chambers of an oil-pressure cylinder, the operation of a choking solenoid valve to generate a first quick displace approach movement beyond the beading measure of the translatable bead to the untranslatable bead on which the pneumatic tyre is mounted, the inflation of the pneumatic tyre, operating again said solenoid valves a second slow displace movement in the opposite direction is generated to bring back the translatable bead to a distance from said untranslatable bead equal to said beading measure, and finally the two lock solenoid valves are closed again to keep said oil of chambers in pressure for an effective axial lock of the pneumatic tyre necessary to a subsequent removal machining of the tread worn material by means of suitable tools.
Dependencies are inferred from the claim text.