Provided is a conveyance device allowing reduction in occurrence of a defect such as air entering or uniformity degradation. The conveyance device of the present invention includes an annular frame capable of surrounding the outer peripheries of a first drum and a second drum, and a sucker provided for the annular frame. The sucker includes a plurality of center suction pads provided side by side in the circumferential direction of the annular frame to suck a center portion of a tire forming member in an axial direction, a plurality of end suction pads provided side by side in the circumferential direction to suck end portions of the tire forming member in the axial direction, a gap provided along the circumferential direction between the center suction pads and the end suction pads, and an adjustment device that adjusts the length of the gap in the axial direction.

A method for building belt assemblies for tyres for vehicle wheels is described. The method includes building a crossed belt structure on a forming drum. Depending on the type of tyre to be produced, the method selects whether to build a belt assembly having a cylindrical shaping or a belt assembly having a toroidal shaping. In order to build a belt assembly having a cylindrical shaping, a zero degrees belt layer is deposited on the forming drum in a radially outer position with respect to the crossed belt structure. In order to build a belt assembly having a toroidal shaping, the crossed belt structure is picked up from the forming drum. The crossed belt structure is then toroidally shaped and transferred onto another forming drum. A zero degrees belt layer is then deposited on the other forming drum in a radially outer position with respect to the toroidally shaped crossed belt structure.

The invention discloses a method for manufacturing a bulletproof and explosion-proof tubeless tire, first, the innerliner is attached to the carcass cord ply to make the carcass innerliner, and then the steel wire braided layers and the intermediate rubber layers are laminated to each other to make an explosion-proof layer, using a first stage building machine to complete the first stage forming of the carcass innerliner, explosion-proof layer and belt to obtain a semi-finished embryo, and then using a second stage building machine, the semi-finished embryo and the tread slab base are formed in the second stage to obtain the embryo, which is baked and stored for 896 h and then vulcanised to obtain a bulletproof and explosion-proof tire; through the second stage forming process, the invention solves the problem that the explosion-proof layer is difficult to form due to the excessively hard metal material when making the embryo.

The invention discloses a method for manufacturing a bulletproof and explosion-proof tubeless tire, first, the innerliner is attached to the carcass cord ply to make the carcass innerliner, and then the steel wire braided layers and the intermediate rubber layers are laminated to each other to make an explosion-proof layer, using a first stage building machine to complete the first stage forming of the carcass innerliner, explosion-proof layer and belt to obtain a semi-finished embryo, and then using a second stage building machine, the semi-finished embryo and the tread slab base are formed in the second stage to obtain the embryo, which is baked and stored for 896 h and then vulcanised to obtain a bulletproof and explosion-proof tire; through the second stage forming process, the invention solves the problem that the explosion-proof layer is difficult to form due to the excessively hard metal material when making the embryo.

Provided is a method of manufacturing a tire and a system for manufacturing a tire. A forming drum body to which a tire component is bonded after completion of a forming operation in an operation station is temporarily placed in a placement apparatus. While the forming drum body is temporarily placed in the placement apparatus, the mass of the green tire is inspected by a mass meter as a predetermined quality of a green tire formed by the tire component bonded to the forming drum body during forming or after completion of the forming, and the profile shape of the green tire is inspected by a profile sensor.

Provided is a method of manufacturing a tire and a system for manufacturing a tire. A forming drum body to which a tire component is bonded after completion of a forming operation in an operation station is temporarily placed in a placement apparatus. While the forming drum body is temporarily placed in the placement apparatus, the mass of the green tire is inspected by a mass meter as a predetermined quality of a green tire formed by the tire component bonded to the forming drum body during forming or after completion of the forming, and the profile shape of the green tire is inspected by a profile sensor.

A process and a plant for producing tyres for vehicle wheels are described. Building of a crown structure of the tyre includes building a crossed belt structure on a substantially cylindrical first forming drum, transferring the crossed belt structure from the first forming drum to an annular holding member, positioning a second forming drum in a radially inner position with respect to the annular holding member, transferring the crossed belt structure from the annular holding member to the second forming drum by radially expanding the second forming drum until it is brought into contact with the crossed belt structure so as to toroidally shape the crossed belt structure, and depositing at least one zero degrees belt layer on the second forming drum in a radially outer position with respect to the toroidally-shaped crossed belt structure.

The facility comprises a tire-building station that is configured to form an uncured tire on a core. A curing station is configured to cure the assembly formed by the core and the uncured tire so as to obtain a cured annular tire. An extraction station is configured to separate, after the curing operation, the cured tire from the core. The curing station has a first, heating, thermal source which presses against the exchange face of the core for the curing operation and is then dissociated from the core and remains in the curing station in order to leave the exchange face free again when the core and the cured tire are transferred to the extraction station so that a second, refrigerating, thermal source of the extraction station takes the place of the first thermal source in contact with the exchange face of the core so as to cool the core.

The facility comprises a tire-building station that is configured to form an uncured tire on a core. A curing station is configured to cure the assembly formed by the core and the uncured tire so as to obtain a cured annular tire. An extraction station is configured to separate, after the curing operation, the cured tire from the core. The curing station has a first, heating, thermal source which presses against the exchange face of the core for the curing operation and is then dissociated from the core and remains in the curing station in order to leave the exchange face free again when the core and the cured tire are transferred to the extraction station so that a second, refrigerating, thermal source of the extraction station takes the place of the first thermal source in contact with the exchange face of the core so as to cool the core.

Provided are a method of manufacturing a tire and a system for manufacturing a tire. A plurality of forming drum bodies are allowed to be temporarily placed on a placement device between work stations adjacent to each other, and at least three of the work stations adjacent to each other are provided in the forming step. In accordance with a specification of a green tire, a plurality of the work stations necessary are selected, and a movement path of the forming drum body is determined. A robot arm disposed at a position corresponding to the movement path is used, the placement device disposed at a position corresponding to the movement path is utilized to deliver the forming drum body, thereby the forming drum body is moved along the movement path, and a forming work is performed in each of the selected work stations to form the green tire.