The present invention provides a device for producing an unvulcanized rubber
member for tire manufacturing. The device includes an extruder with a die that
extrudes the unvulcanized rubber member to form multiple rib-protrusions that extend
in a direction corresponding to a circumferential direction of the tire. A conveying
apparatus receives the unvulcanized rubber member and conveys it in the extrusion
direction. A roller has an outer surface with protruding portions that form multiple
grooves in the unvulcanized rubber member that extend in a direction radial direction
of the tire and intersect the rib-protrusions.
