The invention relates to an applicator unit, a tire building device and a method for applying a strip to a drum, wherein the applicator unit comprises an applicator roller and a cutter, wherein the applicator roller comprises a roller body that is rotatable about a roller axis for applying the strip to the drum in an application direction perpendicular to said roller axis, wherein the applicator roller and the cutter are configured to cooperate for cutting the strip on the applicator roller along a helical cutting path about the roller axis.

An apparatus for building a tire for a vehicle wheel includes at least one forming support and at least one assembly device for assembling components of elastomeric material on the forming support. The at least one assembly device includes at least one dispensing device for dispensing a continuous elongated element of elastomeric material and at least one application device for applying the continuous elongated element in a form of coils disposed in side by side relationship or at least partly superposed, wound on the forming support and forming the at least one component of elastomeric material of the tire. The apparatus also includes at least one pressure device operatively acting on an applied portion of the continuous elongated element, wherein the pressure device includes a central roller and two side rollers, each laterally offset relative to the central roller and on the opposite side relative to the other side roller.

An apparatus for building a tire for a vehicle wheel includes at least one forming support and at least one assembly device for assembling components of elastomeric material on the forming support. The at least one assembly device includes at least one dispensing device for dispensing a continuous elongated element of elastomeric material and at least one application device for applying the continuous elongated element in a form of coils disposed in side by side relationship or at least partly superposed, wound on the forming support and forming the at least one component of elastomeric material of the tire. The apparatus also includes at least one pressure device operatively acting on an applied portion of the continuous elongated element, wherein the pressure device includes a central roller and two side rollers, each laterally offset relative to the central roller and on the opposite side relative to the other side roller.

A method of controlling deposition of a continuous elongated element in building a tire for vehicle wheels, includes: feeding an initial end of a continuous elongated element of elastomeric material through a slit bounded by a first roller and a second roller of a calender; retaining the continuous elongated element against a peripheral surface of the first roller; laying the initial end of the continuous elongated element against a deposition surface; rotating the calender around an oscillation axis that is substantially coincident with a contact generatrix between the first roller and the second roller; and dragging along the continuous elongated element together with the deposition surface.

A method of controlling deposition of a continuous elongated element in building a tire for vehicle wheels, includes: feeding an initial end of a continuous elongated element of elastomeric material through a slit bounded by a first roller and a second roller of a calender; retaining the continuous elongated element against a peripheral surface of the first roller; laying the initial end of the continuous elongated element against a deposition surface; rotating the calender around an oscillation axis that is substantially coincident with a contact generatrix between the first roller and the second roller; and dragging along the continuous elongated element together with the deposition surface.

Each of a plurality of pressure rolls is displaced around the shaft member and pressurizes the tire constituent member. Each of a plurality of supporting parts supports the pressure roll rotatably from the inside of the pressure roll and is displaced integrally with the pressure roll. A plurality of pressure holes are formed in a plurality of points of the shaft member corresponding to positions of the plurality of pressure rolls so as to extend in the pressurization direction for the tire constituent member. Each of a plurality of moving members projects in the pressurization direction from the pressure hole so as to pressurize the pressure roll. Each of a plurality of supply pipes is arranged in the inside space around the shaft member so as to each supply the pressurizing medium for pressurizing the moving member into the pressure hole.

Each of a plurality of pressure rolls is displaced around the shaft member and pressurizes the tire constituent member. Each of a plurality of supporting parts supports the pressure roll rotatably from the inside of the pressure roll and is displaced integrally with the pressure roll. A plurality of pressure holes are formed in a plurality of points of the shaft member corresponding to positions of the plurality of pressure rolls so as to extend in the pressurization direction for the tire constituent member. Each of a plurality of moving members projects in the pressurization direction from the pressure hole so as to pressurize the pressure roll. Each of a plurality of supply pipes is arranged in the inside space around the shaft member so as to each supply the pressurizing medium for pressurizing the moving member into the pressure hole.

A stitching roller is provided for stitching a strip, in particular a continuous strip for strip-winding. The stitching roller includes a roller body that is rotatable about a roller axis. The roller body comprises a circumferential member and a support member provided with a connection end that is connected to the circumferential member and a base end for coupling of the stitching roller to a rotation shaft. The support member is made of a flexible material that allows for the circumferential member to tilt relative to the base end from a neutral orientation into a tilted orientation. The support member includes one or more reinforcements that reinforce the axial stiffness of the support member from the outer radius towards the inner radius.

A stitching roller is provided for stitching a strip, in particular a continuous strip for strip-winding. The stitching roller includes a roller body that is rotatable about a roller axis. The roller body comprises a circumferential member and a support member provided with a connection end that is connected to the circumferential member and a base end for coupling of the stitching roller to a rotation shaft. The support member is made of a flexible material that allows for the circumferential member to tilt relative to the base end from a neutral orientation into a tilted orientation. The support member includes one or more reinforcements that reinforce the axial stiffness of the support member from the outer radius towards the inner radius.

There is provided an apparatus configured to adhere a belt-shaped tire member onto a mold drum including: a feeding device including the belt-shaped tire member arranged so as to be capable of being fed and a transferring and adhering device configured to transfer the belt-shaped tire member from the feeding device side to the mold drum side and adhere the belt-shaped tire member onto the mold drum, wherein the transferring and adhering device includes: a transferring device configured to circulate between the feeding device side and the mold drum side and transfer the belt-shaped tire member sucked on the feeding device side to the mold drum side; and a separating unit configured to separate the transferred belt-shaped tire member on the mold drum side from the transferring device and adhere the belt-shaped tire member onto the mold drum.