A process and a drum for looping annular anchoring structures in a process for building tyres for vehicle wheels includes: depositing a loop on a drum including a radially expandable/contractible intermediate annular portion and, in a position axially adjacent to the opposite axial ends of the intermediate annular portion, a pair of radially expandable/contractible lateral annular portions; associating an annular anchoring structure with a radially outer annular surface portion of the loop defined at the intermediate annular portion; and turning up each of opposite end edges of the loop on the annular anchoring structure through the lateral annular portions as a result of a thrusting stress imparted by a respective lateral annular portion of the pair of lateral annular portions because of a synchronous radial movement and a synchronous axial displacement of a respective plurality of circumferentially adjacent first angular sectors.

A process and a drum for looping annular anchoring structures in a process for building tyres for vehicle wheels includes: depositing a loop on a drum including a radially expandable/contractible intermediate annular portion and, in a position axially adjacent to the opposite axial ends of the intermediate annular portion, a pair of radially expandable/contractible lateral annular portions; associating an annular anchoring structure with a radially outer annular surface portion of the loop defined at the intermediate annular portion; and turning up each of opposite end edges of the loop on the annular anchoring structure through the lateral annular portions as a result of a thrusting stress imparted by a respective lateral annular portion of the pair of lateral annular portions because of a synchronous radial movement and a synchronous axial displacement of a respective plurality of circumferentially adjacent first angular sectors.

The present invention discloses a bead wire wrapper device and a wrapper method. The bead wire wrapper device comprises a rack body; the rack body is provided with a winding unit, an H-shaped wheel assembly, a paper cutting mechanism, a paper guiding mechanism and a rubber applying mechanism; the winding unit comprises a first winding shaft and a second winding shaft; the H-shaped wheel assembly comprises an H-shaped wheel and a drive unit driving the H-shaped wheel to rotate; the paper cutting mechanism is configured to cut off film materials directly or indirectly fed by the winding unit; the paper guiding mechanism comprises a motion mechanism, the motion mechanism is provided with an adsorption assembly and a pressing assembly, the adsorption assembly is configured to adsorb the film materials through negative pressure and send the cut-off tail ends of the film materials to the H-shaped wheel under the action of the motion mechanism, and the pressing assembly is configured to move to the H-shaped wheel under the action of the motion mechanism and press the film materials; and the rubber applying mechanism is configured to paste rubber strips to the film materials on the H-shaped wheel.

A winding device is provided that includes a base plate that is rotated by a rotary shaft and segments. With rotation of the base plate, a wire is wound on the outer circumference of the segments, which rotate integrally with the base plate, to form a bead ring. The winding device includes an manipulation shaft that is rotated by a handle, and conversion mechanisms that are provided between the manipulation shaft and each of the segments The conversion mechanisms transmit and convert rotation of the manipulation shaft to movement of each segment in the radial direction of the base plate.

A winding device is provided that includes a base plate that is rotated by a rotary shaft and segments. With rotation of the base plate, a wire is wound on the outer circumference of the segments, which rotate integrally with the base plate, to form a bead ring. The winding device includes an manipulation shaft that is rotated by a handle, and conversion mechanisms that are provided between the manipulation shaft and each of the segments The conversion mechanisms transmit and convert rotation of the manipulation shaft to movement of each segment in the radial direction of the base plate.

A plant (1) for looping annular anchoring structures (100) includes a looping device (2), a separation station (8a) and a coupling station (8b). A handling apparatus (3) is interlocked to the looping device (2) for managing the plant (1) by moving the plurality of annular anchoring structures (100) coupled to respective separation elements (300), the looped annular anchoring structures (200) coupled to respective separation elements (300) and the separation elements (300a). The separation elements (300) are fed, coupled to respective annular anchoring structures (100), along a feeding section (A1). The separation elements (300a) separated by respective annular anchoring structures (100, 200) are transferred from the separation station (8a) to the coupling station (8b) along a transfer section (T), stationing in at least a first intermediate station (11, 11a). The separation elements (300) are moved away, coupled to respective looped annular anchoring structures (200), along a moving-apart section (A2).

A plant (1) for looping annular anchoring structures (100) includes a looping device (2), a separation station (8a) and a coupling station (8b). A handling apparatus (3) is interlocked to the looping device (2) for managing the plant (1) by moving the plurality of annular anchoring structures (100) coupled to respective separation elements (300), the looped annular anchoring structures (200) coupled to respective separation elements (300) and the separation elements (300a). The separation elements (300) are fed, coupled to respective annular anchoring structures (100), along a feeding section (A1). The separation elements (300a) separated by respective annular anchoring structures (100, 200) are transferred from the separation station (8a) to the coupling station (8b) along a transfer section (T), stationing in at least a first intermediate station (11, 11a). The separation elements (300) are moved away, coupled to respective looped annular anchoring structures (200), along a moving-apart section (A2).

A bead core of the present disclosure is a bead core comprising an annular body in which a strip member comprising one or more bead wires coated with a coating resin is wound and stacked, and in an axial cross section of the annular body, an interface between stacks adjacent to each other is non-linear. A manufacturing method of a bead core of the present disclosure comprises an annular body forming step of winding and stacking a strip member comprising one or more bead wires coated with a coating resin to form an annular body, and the strip member has a side that comes in contact with an adjacent stack in the annular body forming step and that is non-linear in a cross section orthogonal to an extending direction of the strip member.

A bead core of the present disclosure is a bead core comprising an annular body in which a strip member comprising one or more bead wires coated with a coating resin is wound and stacked, and in an axial cross section of the annular body, an interface between stacks adjacent to each other is non-linear. A manufacturing method of a bead core of the present disclosure comprises an annular body forming step of winding and stacking a strip member comprising one or more bead wires coated with a coating resin to form an annular body, and the strip member has a side that comes in contact with an adjacent stack in the annular body forming step and that is non-linear in a cross section orthogonal to an extending direction of the strip member.

A cutting apparatus for an elongate wire is provided, and includes a housing that supports a first cutter that has a body, a recess, and a cutting blade. The cutting blade is disposed upon a wall of the body that defines the recess, the first cutter is fixed with respect to the housing. The housing additionally supports a second cutter that has a body, a recess, and a cutting blade, wherein the cutting blade is disposed upon a wall of the body that defines the recess. The second cutter is normally positioned with respect to the first cutter such that the recess of the first cutter is aligned with the recess of the second cutter, and is movable to a second position where the recess of the second cutter translates with respect to the recess of the first cutter, such that the respective cutting blades translate toward each other.