Method and system for manufacturing tire member

Abstract

Continuously performed is a process of applying, by an X-ray inspection device, X-rays to a predetermined length range from a top surface side of a tire member while conveying the tire member in a longitudinal direction by using a conveying device to acquire image data based on X-ray transmittance. The image data of the predetermined length range continuous without gaps in the longitudinal direction is acquired. Based on contrast in each piece of the image data, a magnitude of variation in the longitudinal direction of a distribution of a constituent member formed of unvulcanized rubber having a larger mass and a higher content rate of a specific component in the tire member is calculated by a calculation device. The variation is corrected by controlling, based on the magnitude of the variation, a rotation speed of a screw disposed in at least one extruder by a control device.