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
Estimating the term…
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.
Claims3
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, the rubber strip has a flattened triangular cross section,
- a thickest section of the rubber strip corresponds to a base portion and a thinnest section of the rubber strip corresponds to a top portion, and
- prior to the opposite ends of the rubber strip contacting one another, in at least one of the opposite ends of the rubber strip, the top portion is extended without an extension of the base portion.
Dependencies are inferred from the claim text.