Industrie Pirelli S.p.a.

Societa' Pneumatici Pirelli Societa Per Azioni

Pirelli Coordinamento Pneumatici S.p.a.

Bruno Colombani

Renato Caretta

Antonio Pacciarini

Franco Bottasso

Renato Coretta

A plant for assembling elastomeric pneumatic tires having a plurality of assembling drums (2) moveable along a predetermined assembling path. Each drum encounters, according to a pre-established sequence, a number of primary work stations (10, 11, 12, 13) each intended for the application of a respective main component (4, 5, 6, 7) common to a plurality of carcass types included in a predetermined production range. Alongside the primary stations are auxiliary work stations (14, 15) intended for applying specifically provided accessory components (8, 9), each being designed for a particular carcass type. Each auxiliary station can be removed and replaced by a different station depending on the type of process to be carried out and is movable between a rest position in which it is perpendicularly moved away from the assembling path and a work position in which it is operatively disposed along the assembling path, in order to execute the application of the respective accessory component. The primary work stations (10, 11, 12, 13) can be moved close to and apart from each other along the assembling path.

Plant for making tire carcasses for vehicle wheels

A process and apparatus for the manufacture of pneumatic tires comprising a carcass formed of reinforcing plies and bead cores are disclosed. The tire carcass is built up around a first drum in cylindrical configuration and bead cores are applied to the carcass. The carcass is transferred telescopically to and around a second expandable drum. The carcass is then torically shaped and the ends of the plies turned-up around the bead cores.

Process for manufacturing pneumatic tires

Apparatus for manufacturing pneumatic tires

A process and apparatus are provided for making a bead wire and bead zone filler for a vehicle tire. The apparatus has a rotatable drum and deformable tubular member disposed on the drum. The external surface of the tubular member is adapted to receive a strip of elastomeric material to be shaped into the bead zone filler. The tubular member is changed from tubular to annular shape with a fluid under pressure.

Process and apparatus for making a combination bead wire and bead zone

A process is provided for turning-up sidestrips and the ends of body plies on the sidewalls of a torus-shaped tire body. The body of the tire is expanded circumferentially, the ends are turned over and the sidewall strips are stitched simultaneously. An apparatus for practicing the process has a device provided with a support for the assembly which turns-up the sidestrips and ends of the body plies which permits insertion and removal of the assembly in the cavity of the tire.

Process and apparatus for turning-up the sidewalls and body plies of

An apparatus is provided for assembling reinforcing rings and bead filler with a vehicle tire carcass. The apparatus has an expandable drum and a device for centering and locking the rings on the drum. The device comprises a support member which is coaxial with the drum and has bars which form a cage slidably disposed on the drum. The device also has a centering device for centering the rings on the drum.

Apparatus for setting bead rings on the carcass of a vehicle tire

A device for removing a tire from the drum of a tire building machine is mounted on the transfer ring of the device which transfers the assembled plies of a breaker structure to the tire building drum. The device has a frame-like cradle with a pivotable bottom member and a drive member for moving the frame-like member against a bottom segment of the tire. It also has a swinging arm member and a fluid actuated cylinder for disposing the arm against a side of the tire. The swinging arm structure is movable parallel to the axis of the drum to slide a shaped tire from the drum. The pivotable bottom of the cradle-like member is pivoted to discharge the tire.

Growing community of inventors

Milan, Italy

Bruno Colombani