Winding method and winding device for bead filler for tire
AssigneesFuji Seiko Co., Ltd., Fuji Shoji Co., Ltd.
InventorsSHIGEAKI NOMURA, AKIRA SEKO
Life of this patent
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Abstract
A rubber strip is transported to a molding drum. At this stage, a cutter cuts the rubber strip into a predetermined length. If a sensor detects the finishing end of the rubber strip when the rubber strip is transported, a sucker, which transports the rubber strip while drawing the rubber strip, is temporarily stopped or the movement speed of the sucker is decreased. As a result, a top portion of the rubber strip is extended in the longitudinal direction of the rubber strip. This compensates for the amount of shrinkage of the rubber strip after extrusion, thus restraining shrinkage of the rubber strip.
Claims6
A winding method for a bead filler for a tire including winding a rubber strip of a predetermined length in an annular shape and joining opposite ends of the rubber strip to each other,
- wherein, prior to the joining of the opposite ends of the rubber strip, at least one of the opposite ends of the rubber strip is extended.
A winding device for a bead filler for a tire comprising:
- a molding drum for molding a rubber strip in an annular shape;
- a main transport member for transporting the rubber strip of a predetermined length to an outer peripheral surface of the molding drum;
- and
- an auxiliary transport member for cooperating with the main transport member to transport the rubber strip,
- wherein the rubber strip is extended by regulating a transport speed of the auxiliary transport member.
Dependencies are inferred from the claim text.