Abstract: A method for forming a belt-like rubber sheet S by extruding rubber on a drum outer peripheral surface 3a by an extruder 2 includes: a front end forming step for forming a front end S1 having a wedge-shaped cross section; an intermediate part forming step for forming an intermediate part S2 having a desired thickness; and a rear end forming step for forming a rear end S3 having a wedge-shaped cross section by gradually decreasing an extrusion amount of the rubber to zero from a predetermined extrusion amount in a predetermined time, gradually decreasing the rotational speed of the drum outer peripheral surface 3a to zero from a predetermined rotational speed in the predetermined time, and gradually decreasing a distance from the drum outer peripheral surface 3a to a die 21 to an extrusion end distance from a predetermined distance in the predetermined time.

Abstract: A bead core covering method for covering an annular bead core with a long, belt-like rubber sheet, includes: affixing a part in a width direction of the rubber sheet onto an outer surface of the bead core that is rotating; and winding a remaining part in the width direction of the rubber sheet having been affixed to the outer surface of the bead core along a cross-sectional shape of the bead core sequentially from the part in the width direction toward an end in the width direction, wherein, the remaining part in the width direction of the rubber sheet is bonded under pressure to the outer surface of the bead core by outer peripheral surfaces of first and second bending rollers that are rotating, and peripheral speeds of the first second bending rollers are higher than the peripheral speed of the bead core.

Abstract: A bead core coating method for coating an annular bead core with a belt-shaped rubber sheet including the steps of: winding the rubber sheet extruded on an outer circumferential surface of a rotary drum; sticking a part of the rubber sheet to an outer surface of the bead core which is in rotation; and winding a remaining part of the rubber sheet stuck on the outer surface of the bead core while sequentially sticking the remaining part along the outer surface of the bead core, wherein air is blown to a sheet portion including the end that is not stuck to the outer surface of the bead core in the currently-winding rubber sheet in a first direction toward the end along a sheet surface or a second direction inclined toward an outer surface side of the bead core as compared with the first direction.

Abstract: A bead core coating method for coating an annular bead core with a belt-shaped rubber sheet, including the steps of: winding the rubber sheet around an outer circumferential surface of a rotary drum; sticking a central portion of the rubber sheet to an outer surface of the bead core; and winding both ends in the width direction of the rubber sheet stuck on the outer surface of the bead core while sequentially sticking both ends in the width direction along the outer surface of the bead core from the central portion in the width direction toward each end in the width direction, wherein in the step of sticking, air is blown to a gap generated between the central portion in the width direction of the rubber sheet and the outer circumferential surface of the rotary drum at a place where the rubber sheet is peeled from the rotary drum.

Abstract: A bead member manufacturing method for manufacturing a bead member by forming an annular bead filler in an outer peripheral side of an annular bead core includes a step of arranging the bead core on a forming surface of a forming table, a step of forming a first bead filler portion by winding a first rubber in an area closer to an outer side in a width direction than a side surface which does not face toward the forming surface in the outer peripheral surface of the arranged bead core, a step of turning over and rearranging the bead core and the first bead filler portion on the forming surface, and a step of forming a second bead filler portion by winding a second rubber in the outer peripheral sides of the bead core and the first bead filler portion so as to form the bead filler.

Abstract: A bead core coating method for coating an annular bead core with a belt-shaped rubber sheet including the steps of: winding the rubber sheet extruded on an outer circumferential surface of a rotary drum; sticking a part of the rubber sheet to an outer surface of the bead core which is in rotation; and winding a remaining part of the rubber sheet stuck on the outer surface of the bead core while sequentially sticking the remaining part along the outer surface of the bead core, wherein air is blown to a sheet portion including the end that is not stuck to the outer surface of the bead core in the currently-winding rubber sheet in a first direction toward the end along a sheet surface or a second direction inclined toward an outer surface side of the bead core as compared with the first direction.

Abstract: A bead core coating method for coating an annular bead core with a belt-shaped rubber sheet, including the steps of: winding the rubber sheet around an outer circumferential surface of a rotary drum; sticking a central portion of the rubber sheet to an outer surface of the bead core; and winding both ends in the width direction of the rubber sheet stuck on the outer surface of the bead core while sequentially sticking both ends in the width direction along the outer surface of the bead core from the central portion in the width direction toward each end in the width direction, wherein in the step of sticking, air is blown to a gap generated between the central portion in the width direction of the rubber sheet and the outer circumferential surface of the rotary drum at a place where the rubber sheet is peeled from the rotary drum.

Abstract: A conveying device for conveying a rubber member extruded in a curved state from an extrusion device, the device including a support and a plurality of rollers which are spirally arranged around the support to constitute a spiral conveying path and which rotate while supporting a lower surface of the rubber member, wherein an outer diameter of each of the rollers increases from one end to the other end in an axial direction, the one end being rotatably fixed to the support, and the plurality of rollers include drive rollers which rotate and drive.

Abstract: In a bead filler forming device configured to forma bead filler by annularly applying, to a forming surface of a rotating table, rubber extruded via a mouthpiece from an extruder in a band shaped manner, and by joining end portions of the band-shaped rubber. The mouthpiece includes a leading end surface, a discharge port which is formed in the leading end surface, a land portion which extends from the discharge port in a single cross section, and a flow rate regulating portion which is provided in an upstream side of the land portion and makes a flow rate of the rubber flowing to an outer peripheral side flow path of the land portion larger than a flow rate of the rubber flowing to an inner peripheral side flow path of the land portion.

Abstract: In a conveying method of a rubber member for receiving the rubber member which is supplied from a supply device and is curved, and transferring the received rubber member to a supply receiving device in a curved state, the method includes a step of winding the rubber member from a leading end portion onto a mounting surface of a rotary table by forwardly rotating the rotary table and receiving the rubber member from the supply device in a state in which a rear end portion of the rubber member is not in contact with the mounting surface, a step of moving the rotary table from a receiving position to a transferring position, and a step of winding back the rubber member from the rear end portion so as to transfer the rubber member to the supply receiving device by reversely rotating the rotary table.

Abstract: A bead core covering method for covering an annular bead core with a belt-like rubber sheet includes winding the rubber sheet extruded by an extruding machine via a mouth piece around an outer peripheral surface of a rotary drum from a leading end portion, attaching a part in a width direction of the rubber sheet on the outer peripheral surface of the rotary drum to an outer surface of the bead core, which rotates, from the leading end portion before the rubber sheet is wound over an entire periphery of the outer peripheral surface of the rotary drum, and wrapping a remaining portion in the width direction of the rubber sheet attached to the outer surface of the bead core along a cross-sectional shape of the bead core.

Abstract: The object of the present invention is to provide a method and an apparatus for molding an annular member capable of accurately molding an annular member into a predetermined cross-sectional shape even if the annular member has a thick-walled inner peripheral part and a thin-walled outer peripheral part.

Abstract: A bead member manufacturing method for manufacturing a bead member by forming an annular bead filler in an outer peripheral side of an annular bead core includes a step of arranging the bead core on a forming surface of a forming table, a step of forming a first bead filler portion by winding a first rubber in an area closer to an outer side in a width direction than a side surface which does not face toward the forming surface in the outer peripheral surface of the arranged bead core, a step of turning over and rearranging the bead core and the first bead filler portion on the forming surface, and a step of forming a second bead filler portion by winding a second rubber in the outer peripheral sides of the bead core and the first bead filler portion so as to form the bead filler.

Abstract: In a conveying method of a rubber member for receiving the rubber member which is supplied from a supply device and is curved, and transferring the received rubber member to a supply receiving device in a curved state, the method includes a step of winding the rubber member from a leading end portion onto a mounting surface of a rotary table by forwardly rotating the rotary table and receiving the rubber member from the supply device in a state in which a rear end portion of the rubber member is not in contact with the mounting surface, a step of moving the rotary table from a receiving position to a transferring position, and a step of winding back the rubber member from the rear end portion so as to transfer the rubber member to the supply receiving device by reversely rotating the rotary table.

Abstract: A conveying device which receives a curved rubber member supplied from a supply device and delivers the rubber member to a supply target device, the conveying device including a rotary table having an annular mounting surface on which the curved rubber member is placed, and a moving mechanism capable of moving the rotary table between a receiving position and a delivery position, wherein the rotary table is rotated at the receiving position to roll up the rubber member, is moved from the receiving position to the delivery position, and is reversely rotated at the delivery position to roll back the rubber member.

Abstract: A conveying device for conveying a rubber member extruded in a curved state from an extrusion device, the device including a support and a plurality of rollers which are spirally arranged around the support to constitute a spiral conveying path and which rotate while supporting a lower surface of the rubber member, wherein an outer diameter of each of the rollers increases from one end to the other end in an axial direction, the one end being rotatably fixed to the support, and the plurality of rollers include drive rollers which rotate and drive.

Abstract: The object of the present invention is to provide a method and an apparatus for molding an annular member capable of accurately molding an annular member into a predetermined cross-sectional shape even if the annular member has a thick-walled inner peripheral part and a thin-walled outer peripheral part.