Abstract: In a bead wire winding and forming device, a guide mechanism guiding a bead wire to a former is supported to be movable in a tangential direction of the former and includes a movable body capable of clamping and unclamping the bead wire, a guide body supported on the movable body to be swingable in a plane parallel to a rotational axis of the former and having a guide portion for guiding the bead wire in the tangential direction of the former, and a restriction member for allowing the swing motion of the guide body when the movable body is at a retracted position but for restricting the swing motion of the guide body when the movable body is at an advanced position.

Abstract: A body ply turn-up device for turning up at least one width-end portion of a body ply expanded into a toroidal shape includes a plurality of arm components movable in the axial direction of an operating shaft and pivotable radially of the operating shaft. Guide members are respectively supported on an end portion of each arm component and coil springs are interposed in respective spaces between guide members. Elastic members respectively cover the outer surfaces of the coil springs for performing pressing at spaces between spiral wire portions thereof when the arm components are pivoted radially outward of the operating shaft. Alternatively, the guide portions include portions which are smaller than the inner diameter of the coil spring and which extend to positions nearly touching each other at a center in a lengthwise direction of each coil spring in a state that the arm components are contracted.

Abstract: A body ply turn-up device for turning up at least one width-end portion of a body ply expanded into a toroidal shape includes a plurality of arm components movable in the axial direction of an operating shaft and pivotable radially of the operating shaft. Guide members are respectively supported on an end portion of each arm component and coil springs are interposed in respective spaces between guide members. Elastic members respectively cover the outer surfaces of the coil springs for performing pressing at spaces between spiral wire portions thereof when the arm components are pivoted radially outward of the operating shaft. Alternatively, the guide portions include portions which are smaller than the inner diameter of the coil spring and which extend to positions nearly touching each other at a center in a lengthwise direction of each coil spring in a state that the arm components are contracted.

Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.

Abstract: In a bead wire winding and forming device, a guide mechanism guiding a bead wire to a former is supported to be movable in a tangential direction of the former and includes a movable body capable of clamping and unclamping the bead wire, a guide body supported on the movable body to be swingable in a plane parallel to a rotational axis of the former and having a guide portion for guiding the bead wire in the tangential direction of the former, and a restriction member for allowing the swing motion of the guide body when the movable body is at a retracted position but for restricting the swing motion of the guide body when the movable body is at an advanced position.

Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.