The invention relates to a method and centering assembly (1) for centering a tire component (9), wherein the method comprises the steps of placing the tire component on and conveying it from a first conveyor (2) towards a second conveyor (3), determining the position of a first longitudinal edge (91), transversely moving the first conveyor (2) and thereby aligning the first longitudinal edge (91) along a first reference on the second conveyor (3), conveying the tire component from the first conveyor (2) onto the second conveyor (3) while determining the position of a second longitudinal edge (92), wherein the tire component has a center between the first longitudinal edge (91) and the second longitudinal edge (92), conveying the tire component from the second conveyor (3) towards a drum (4), laterally moving the drum (4) to align the center of the tire component with a center of a desired application position of the tire component on the drum, and conveying the tire component from the second conveyor (3) onto the drum (4).

A device for supplying a tire-constituting member includes a placement portion to which a tire-constituting member is supplied from the rear side to be placed on the placement portion, a first holding device to hold the tire-constituting member front end portion and is movable, a second holding device to hold the tire-constituting member rear end portion cut to a predetermined length and is movable, a detection device to detect the front end portion position placed on the placement portion, and a control unit which calculates deviation amounts with respect to preset reference positions of the front end portion according to data from the detection device and drives the first holding device in a state where the rear end portion is held by the second holding device such that the front end portion is positioned at the reference position according to the calculation results.

A device for supplying a tire-constituting member includes a placement portion to which a tire-constituting member is supplied from the rear side to be placed on the placement portion, a first holding device to hold the tire-constituting member front end portion and is movable, a second holding device to hold the tire-constituting member rear end portion cut to a predetermined length and is movable, a detection device to detect the front end portion position placed on the placement portion, and a control unit which calculates deviation amounts with respect to preset reference positions of the front end portion according to data from the detection device and drives the first holding device in a state where the rear end portion is held by the second holding device such that the front end portion is positioned at the reference position according to the calculation results.