Patent ID: 6910875

Claim:
A device for producing an unvulcanized rubber member for tire manufacturing, the device comprising: an extruder including a die for continuously extruding the unvulcanized rubber member, the die including notches for forming a plurality of rib-protrusions on the unvulcanized rubber member, which rib-protrusions extend in a direction corresponding to a circumferential direction of the tire; conveying apparatus disposed to receive the unvulcanized rubber member from the extruder and convey the unvulcanized rubber member in the extrusion direction of the unvulcanized rubber member; and a roller disposed to rotate while pressing a surface of the unvulcanized rubber member being conveyed by the conveying apparatus, the roller including an outer circumferential surface with protruding portions for forming a plurality of continuous grooves in the unvulcanized rubber member, each of said grooves extending continuously in a direction corresponding to a radial direction of the tire and intersecting the plurality of rib-protrusions.