A system (10) for butt-joining two or more rubber strips (B1, B2) selected in accordance with a predetermined rubber mixture recipe in order to feed at least one extruder with a complex strip of rubber material (B12) made from the butt joined rubber strips is disclosed. The system includes at least one conveyor that transports the rubber strips from an inlet (12) of the system to an outlet (14) of the butt-joining system; a frame (18) that operationally supports the conveyor to allow the continuous transport of the rubber strips and also to allow the simultaneous butt-joining of the rubber strips fed to the system; and a roller system (20) that butt-joins the rubber strips without penetration. The invention also relates to a process for butt-joining rubber strips that is performed by the system.

A belt forming system may include an upstream conveyor, a downstream conveyor located downstream of the upstream conveyor, and a belt assembly system in communication with the upstream conveyor and the downstream conveyor. The belt assembly system may also include an arm, an actuator for moving the arm, and/or a holding component coupled to the arm and adapted to move a strip section from the upstream conveyor to a desired position on the downstream conveyor such that the strip section is oriented at a predetermined angle on the downstream conveyor. In one embodiment, the belt forming system comprises a belt cutter. The present disclosure also relates to a method for manufacturing at least a portion of a tire belt.

A belt forming system may include an upstream conveyor, a downstream conveyor located downstream of the upstream conveyor, and a belt assembly system in communication with the upstream conveyor and the downstream conveyor. The belt assembly system may also include an arm, an actuator for moving the arm, and/or a holding component coupled to the arm and adapted to move a strip section from the upstream conveyor to a desired position on the downstream conveyor such that the strip section is oriented at a predetermined angle on the downstream conveyor. In one embodiment, the belt forming system comprises a belt cutter. The present disclosure also relates to a method for manufacturing at least a portion of a tire belt.

Cord ply joiner for a tire includes a first pressurizer having first pressing member and first pressure receiving member in upper and lower sides, and a second pressurizer having second pressing member and second pressure receiving member in the upper and lower sides. A first code ply positioning mechanism positions a first code ply by bringing a tail end of the first code ply into contact with a side surface of the second pressure receiving member, a first code ply fixing mechanism lowers the cord end pressing member so the first cord ply is fixed, and a second code ply positioning mechanism positions the tip of the second code ply by bringing the tip into contact with a side surface of the cord end pressing member. The first pressurizer and the second pressurizer are brought close to each other, whereby a shearing force is applied to an overlapped portion.

Cord ply joiner for a tire includes a first pressurizer having first pressing member and first pressure receiving member in upper and lower sides, and a second pressurizer having second pressing member and second pressure receiving member in the upper and lower sides. A first code ply positioning mechanism positions a first code ply by bringing a tail end of the first code ply into contact with a side surface of the second pressure receiving member, a first code ply fixing mechanism lowers the cord end pressing member so the first cord ply is fixed, and a second code ply positioning mechanism positions the tip of the second code ply by bringing the tip into contact with a side surface of the cord end pressing member. The first pressurizer and the second pressurizer are brought close to each other, whereby a shearing force is applied to an overlapped portion.

Provided are a rubber sheet member joining device and method. At least one opposing surface of a pair of gripping parts is provided with a contact member having a contact surface projecting toward an other opposing surface of the pair of gripping parts; the pair of gripping parts grip ranges in proximity to end surfaces in a state in which end surfaces project from the one opposing surface toward the other opposing surface; the total of end surface projection amounts of the end surfaces from the opposing surfaces is set to be a predetermined length larger than a separation distance between the opposing surfaces when the contact member is sandwiched between the opposing surfaces; and by bringing the contact member into a state of being sandwiched between the opposing surfaces, the movement of the gripping parts in proximity to each other is stopped and the end surfaces are joined together.

A belt layer is provided at a tire radial direction (arrow R direction) outer side of a carcass. This belt layer is structured to include a reinforcing portion and a resin portion. The reinforcing portion of the belt is formed by reinforcing cords crossing, and surfaces of the resin cords are covered by the resin portion.

A belt layer is provided at a tire radial direction (arrow R direction) outer side of a carcass. This belt layer is structured to include a reinforcing portion and a resin portion. The reinforcing portion of the belt is formed by reinforcing cords crossing, and surfaces of the resin cords are covered by the resin portion.

A method of manufacturing a tire including a reinforcing cord continuously wound a plurality of times in a tire circumferential direction or wound in the tire circumferential direction while continuously extending in a tire width direction.

A preceding carcass cord from one feeding unit is used to form a carcass layer while being fed to a forming drum, and a leading edge portion of a next carcass cord is paid out from another feeding unit in advance. When a predetermined length of the preceding carcass cord is fed, a splice mechanism is used to join the leading edge portion of the next carcass cord to the preceding carcass cord to make the leading edge portion of the next carcass cord continuous with the preceding carcass cord. Then, with the next carcass cord fed to the forming drum, formation of the carcass layer is continued to complete the carcass layer.

A method forms a butt joint between ends of first and second plies and splices the first and second plies together. The method includes the steps of: positioning a first splice edge of a first ply at a first location; positioning a second splice edge of a second ply at a second location, the second splice edge being left bare; wrapping a gum strip around the first splice edge such that the first gum strip forms a U-shaped structure in section that allows the first gum strip to extend from a first planar side of the first ply over the first splice edge to a second opposite planar side of the first ply; not wrapping a gum strip around the second splice edge; placing the first splice edge in abutting relationship to the second splice edge; and stitching the first splice edge to the second splice edge such that stitches each extend from the first planar side of the first ply, through the gum strip, to the first planar side of the second ply.