Tire manufacturing device and tire manufacturing method

A tire manufacturing device includes: a molding drum; a first moving portion in which the molding drum moves in order to mold an inner liner layer on the molding drum; a second moving portion in which the molding drum moves in order to mold a ply layer on the inner liner layer; a stitcher position where a carcass band is formed by performing pressing from above the ply layer laminated on the inner liner layer; and a transfer position where the carcass band is transferred from the molding drum to a transport device that transports the carcass band to a subsequent process, and the stitcher position and the transfer position are adjacent to each other.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2021-002415 (filing date: Jan. 8, 2021). This application includes all of contents of Japanese Patent Application 2021-002415 by reference to Japanese Patent Application 2021-002415.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a tire manufacturing device and a tire manufacturing method.

2. Description of the Related Art

As described in WO 2006/048924 (Patent Literature 1), in manufacture of a pneumatic tire, a carcass band and a belt band are separately molded, and then they are combined and molded as a tire. The carcass band includes an inner liner layer made of an inner liner, a chafer, a side wall, and the like, and a ply layer made of a squeegee, one or more carcass plies, and the like.

As described in Patent Literature 1, in the manufacture of the carcass band, first, the side wall, the chafer, and the inner liner are laminated on a molding drum to mold the inner liner layer, and the squeegee and the carcass ply are laminated on the inner liner layer to mold the ply layer. After that, the carcass band is completed through a process called a stitcher of pressing the ply layer from above by a roller.

The carcass band is sent to a next process, and integrated with the belt band or the like consisting of a belt and a tread to become a raw tire before vulcanization molding.

Incidentally, in a carcass band manufacturing device in the related art, as described in Patent Literature 1, a first moving portion in which a molding drum moves in order to mold an inner liner layer and a second moving portion in which the molding drum moves in order to mold a ply layer are provided adjacent to each other. A stitcher device is provided at an end portion of the second moving portion on a side opposite to the first moving portion. In addition, an end portion of the first moving portion on a side opposite to the second moving portion is in a transfer position where the carcass band is transferred to a transport device in order to send the carcass band to the next process.

Then, one molding drum moves in an order of the first moving portion, the second moving portion, a location of the stitcher device, and the transfer position, and the carcass band is molded and carried out to a subsequent process.

However, it takes time to mold an inner liner layer in a first moving portion. In particular, when a long rubber strip extruded from an extruding machine is helically wound around a molding drum to mold a tire constituting member, it may take time to mold the inner liner layer. In particular, when a large volume inner liner layer made of a side wall is molded from a rubber strip, or when a particularly thin inner liner layer is molded from a rubber strip, it tends to take time to mold the inner liner layer.

Therefore, even if the molding of a carcass band by a stitcher device is completed early during the molding of the inner liner layer, the carcass band is not transferred to a transfer position until the molding of the inner liner layer is completed, which is inefficient.

SUMMARY OF THE INVENTION

Therefore, an object of the invention is to provide an efficient tire manufacturing device and tire manufacturing method.

A tire manufacturing device of an embodiment includes: a molding drum; a first moving portion in which the molding drum moves in order to mold an inner liner layer on the molding drum; a second moving portion in which the molding drum moves in order to mold a ply layer on the inner liner layer; a stitcher position where a carcass band is formed by performing pressing from above the ply layer laminated on the inner liner layer; and a transfer position where the carcass band is transferred from the molding drum to a transport device that transports the carcass band to a subsequent process, and the stitcher position and the transfer position are adjacent to each other.

In addition, a tire manufacturing method of the embodiment includes: a step of molding an inner liner layer on a molding drum while moving the molding drum in a first moving portion; a step of molding a ply layer on the inner liner layer on the molding drum while moving the molding drum in a second moving portion; a step of forming a carcass band by performing pressing from above the ply layer laminated on the inner liner layer in a stitcher position; and a step of transferring the carcass band to a transport device that transports the carcass band to a subsequent process at a transfer position, and the carcass band is transferred from the stitcher position to the adjacent transfer position.

According to the tire manufacturing device and the tire manufacturing method of the embodiment, a pneumatic tire can be efficiently manufactured.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

An embodiment will be described with reference to drawings. The embodiment described below is merely an example, and appropriate modifications without departing from the spirit of the invention are included in a scope of the invention.

FIG.14shows constituting members of a pneumatic tire in an exploded manner. As shown inFIG.14, the constituting members of the pneumatic tire include an inner liner1a, chafers1b, and side walls1c. Depending on the type of tire to be manufactured, a layer in which the inner liner1aand the chafers1bare laminated may be called an inner liner layer. However, in the present embodiment, a layer in which the inner liner1a, the chafers1b, and the side walls1care laminated is called as an inner liner layer1, and in a tire manufacturing process, the inner liner1a, the chafers1b, and the side walls1care laminated to mold one inner liner layer1.

In addition, the constituting members provided on an outer diameter side of the inner liner layer1in the tire manufacturing process include one or more (2in a case of the figure) carcass plies2aand a squeegee2b. The carcass plies2aand squeegee2bare molded as a ply layer2in the tire manufacturing process. In the tire manufacturing process, the inner liner layer1and the ply layer2are combined to form a carcass band.

In addition, the constituting members provided on the outer diameter side of the carcass band in the tire manufacturing process include a pair of beads3.

In addition, the constituting members provided on the outer diameter side of the carcass band in the tire manufacturing process include one or more belts4a(2in a case of the figure), a reinforcing layer4b, a base4c, and a cap4d. The base4cand the cap4dare integrated to form a tread. In the tire manufacturing process, the belts4a, the reinforcing layer4b, and the tread are laminated to form a belt band.

The belt band is combined with the outer diameter side of the carcass band in which the beads3are set and expanded into a tire shape to form a raw tire before vulcanization molding. In addition to the constituting members shown inFIG.14, various members are used for the pneumatic tire as needed.

Next, a tire manufacturing device10of the present embodiment will be described. As shown inFIG.1, the tire manufacturing device10of the present embodiment includes: a first molding drum D1; a second molding drum D2; a first moving portion11in which the molding drums D1and D2move in order to mold the inner liner layer1; a second moving portion12in which the molding drums D1and D2move in order to mold the ply layer2on the inner liner layer1; a turntable13that exchanges the molding drums D1and D2between the first moving portion11and the second moving portion12; and a stitcher device40that presses from above the ply layer2laminated on the inner liner layer1. Further, the tire manufacturing device10is provided with a stitcher position15where the stitcher device40performs pressing, and a transfer position16described later.

Then, as shown inFIG.1, the first moving portion11, the turntable13, the second moving portion12, the stitcher position15, and the transfer position16are arranged in this order. However, the stitcher position15is located on the second moving portion12and near an end portion of the second moving portion12on the transfer position16side.

The molding drums D1and D2have a cylindrical shape, and outer diameters thereof can be expanded or contracted by a well-known structure. When the inner liner layer1and the ply layer2are molded on the molding drums D1and D2, the outer diameters of the molding drums D1and D2are in an expanded state. When the inner liner layer1or the like is removed from the molding drums D1and D2, the outer diameters of the molding drums D1and D2are contracted.

As shown inFIG.2, the molding drums D1and D2have a horizontal rotation shaft20. The molding drums D1and D2can rotate around the rotation shaft20. One end portion of the rotation shaft20is supported by a rotation device21. The rotation device21is provided with a motor for rotating the molding drums D1and D2. The rotation device21is mounted on a moving base22.

As shown inFIG.1, the first moving portion11and the second moving portion12consist of rails11aand12a, respectively. The moving base22runs on these rails11aand12a. Therefore, the molding drums D1and D2can move the first moving portion11and the second moving portion12. The first moving portion11and the second moving portion12are parallel to each other. Extending directions of the first moving portion11and the second moving portion12, moving directions of the molding drums D1and D2, and an extending direction of the rotation shaft20of the moving molding drums D1and D2are the same.

A first extruding machine30, a second extruding machine31, and a third extruding machine32are arranged as a part of the tire manufacturing device10beside the first moving portion11. The first extruding machine30, the second extruding machine31, and the third extruding machine32are arranged along the first moving portion11. The first extruding machine30, the second extruding machine31, and the third extruding machine32are rubber supply devices, respectively. The first extruding machine30, the second extruding machine31, and the third extruding machine32extrude rubber strips, which are long rubber members, toward the molding drums D1and D2of the first moving portion11, respectively.

The rubber strip extruded from the first extruding machine30is for forming the side wall1c. Further, the rubber strip extruded from the second extruding machine31is for forming the chafers1b. In addition, the rubber strip extruded from the third extruding machine32is for forming the inner liner1a.

When the molding drums D1and D2move in front of the first extruding machine30and stop, the first extruding machine30starts extruding the rubber strip toward the molding drums D1and D2. While the first extruding machine extrudes the rubber strip, the molding drums D1and D2move at a constant speed in the extending direction of the rotation shaft20while rotating around the rotation shaft20. In this way, the rubber strip is helically wound around the molding drums D1and D2, and the side walls1care molded. The chafers1band the inner liner1aare also molded by helically winding a rubber strip in the same manner as the side walls1c.

The molding drums D1and D2move on the first moving portion11and stop in front of the first extruding machine30, the front of the second extruding machine31, and the front of the third extruding machine32, respectively. Each time the molding drums are stopped, the rubber strip is helically wound around the molding drums D1and D2, and the tire constituting members (the side walls1c, the chafers1b, and the inner liner1a) are molded. When these tire constituting members are molded, the inner liner layer1is completed.

A fourth extruding machine33, a first ply supply device34, and a second ply supply device35are arranged as a part of the tire manufacturing device10beside the second moving portion12. The fourth extruding machine33and the ply supply devices34and35are arranged so as to sandwich the second moving portion12.

The fourth extruding machine33is a rubber supply device. The fourth extruding machine33extrudes a rubber strip, which is a long rubber for forming the squeegee2b, toward the molding drums D1and D2of the second moving portion12. The squeegee2bis molded by the fourth extruding machine33in the same method as a method of molding the side walls1cby the first extruding machine30.

In addition, when the molding drums D1and D2move in front of the first ply supply device34and stop, the first ply supply device34sends sheet-shaped carcass plies2atoward the molding drums D1and D2. The molding drums D1and D2are rotated to wind up the sheet-shaped carcass plies2a. Therefore, layers of the carcass plies2aare molded on the molding drums D1and D2. The second ply supply device35also sends the sheet-shaped carcass plies2atoward the molding drums D1and D2in the same manner as the first ply supply device34. Therefore, layers of second carcass plies2aare molded on the molding drums D1and D2.

The molding drums D1and D2move on the second moving portion12and stop in front of the fourth extruding machine33, in front of the first ply supply device34, and in front of the second ply supply device35, respectively. Each time the molding drums stop, the rubber strip or the carcass plies2aare wound around the molding drums D1and D2, and the tire constituting members (the squeegee2band the carcass plies2a) are molded. When these tire constituting members are molded, the ply layer2is completed.

The stitcher device40is provided near an end portion of the second moving portion12on a side opposite to the first moving portion11. As shown inFIG.3, the stitcher device40has a main body41and a plurality of rollers43. The main body41of the stitcher device40is formed with a circular hole42when viewed from the extending direction of the second moving portion12. A plurality of rollers43are arranged along a circumferential direction of the hole42. These rollers43are arranged in an annular shape. These rollers43are simultaneously advanced toward an inner diameter side and retracted toward an outer diameter side by a device such as a cylinder provided inside the main body41.

When the stitcher device40is at the stitcher position15, the molding drums D1and D2in which the inner liner layer1and the ply layer2are laminated can enter the inner diameter side of an annular ring formed by the plurality of rollers43. When the molding drums D1and D2enter the inner diameter side of the annular ring formed by the plurality of rollers43, the plurality of rollers43advance toward the molding drums D1and D2and press the ply layer2. Further, by moving the molding drums D1and D2in the extending direction of the rotation shaft20(the extending direction of the second moving portion12) while maintaining a pressed state, the whole of the ply layer2is pressed by the rollers to be brought into close contact with the inner liner layer1, and forms the carcass band. Hereinafter, the pressing of the ply layer2by the rollers43by a method in this paragraph will be referred to as “performing a stitcher”.

As shown inFIGS.1and3, the stitcher device40is suspended from a rail44. The rail44extends in a direction orthogonal to the extending direction of the second moving portion12. The rail44extends horizontally from a location above the second moving portion12to a location away from the second moving portion12. The stitcher device40can be moved along the rail44by a servomotor45provided at an upper portion thereof. That is, the stitcher device40can be moved in the direction orthogonal to the moving direction of the molding drums D1and D2(which is also the extending direction of the second moving portion12).

In a moving range of the stitcher device40, the location above the second moving portion12is the stitcher position15. In addition, in the moving range of the stitcher device40, the location away from the second moving portion is referred to as a standby position17. The stitcher device40is advanced to the stitcher position15when performing the stitcher, and is retracted to the standby position17when the molding drums D1and D2move between the stitcher position15and the transfer position16.

The circular turntable13is provided between the first moving portion11and the second moving portion12. A right end portion of the first moving portion11is in contact with the turntable13, and a left end portion of the second moving portion12is in contact with the turntable13.

The turntable13is rotatable by 180° by a motor provided below the turntable13. The turntable13is provided with rails11band12bwhich are connected to the rails11aof the first moving portion11and the rails12aof the second moving portion12, respectively. The two rails11band12bon the turntable13are parallel.

When the turntable13is in a first state, the rails11aof the first moving portion11and one of the rails11bof the turntable13are connected to each other, and the rails12aof the second moving portion12and the other of rails12bof the turntable13are connected to each other. When the turntable13is rotated by 180° to be in a second state, the rails11aof the first moving portion11and the other of the rails12bof the turntable13are connected to each other, and the rails12aof the second moving portion12and one of the rails11bof the turntable13are connected to each other.

Since the rails are connected in this way, the molding drums D1and D2can move between the first moving portion11and the turntable13and can move between the second moving portion12and the turntable13in the first state and the second state. Then, the molding drums D1and D2can move between the first moving portion11and the second moving portion12by passing through the turntable13.

However, a location adjacent to the end portion of the second moving portion12on the side opposite to the first moving portion11is the transfer position16. The transfer position16is a location where the completed carcass band is transferred from the molding drums D1and D2to a transport device18.

The transport device18is a device in which a large number of suction members are provided on an inner diameter side of a cylindrical tubular portion, and is generally called a transfer or the like. The molding drums D1and D2can enter an inner diameter side of the transport device18while holding the carcass band on an outer diameter surface. After the molding drums enter the inner diameter side, the suction members of the transport device18holds the outer diameter surface of the carcass band, and the diameters of the molding drums D1and D2are reduced, so that the carcass band is transferred from the molding drums D1and D2to the transport device18.

Next, a tire manufacturing method using the tire manufacturing device10of the present embodiment will be described. The tire manufacturing method of the present embodiment is executed by controlling each portion of the tire manufacturing device10by a control device (not shown).

As shown inFIG.4(time chart), the molding of the inner liner layer1in the first moving portion11and the molding of the ply layer2in the second moving portion12are performed in parallel at the same time.

Specifically, in the first moving portion11, the inner liner1a, the chafers1b, and the side walls1care molded on the first molding drum D1in this order. Therefore, the inner liner layer1is completed. In addition, in the second moving portion12, the second molding drum D2(the second molding drum D2in the second moving portion12already holds the inner liner layer1) moves, and the squeegee2band the carcass plies2aare laminated on the inner liner layer1in this order. Therefore, the ply layer2is completed on the inner liner layer1.

In the second moving portion12, the stitcher is continuously performed after the ply layer2is completed. Specifically, in the second moving portion12, the stitcher device40moves to the stitcher position15as shown inFIG.1at the same time as the completion of the ply layer2or at the timing before and after the completion of the ply layer2. Then, after the ply layer2is completed, the second molding drum D2moves to the stitcher position15and enters the hole42of the stitcher device40as shown inFIG.5. When the second molding drum D2enters the hole42, the rollers43of the stitcher device40advances toward the second molding drum D2and presses the ply layer2on the second molding drum D2. While the pressed state by the rollers43is maintained, the second molding drum D2reciprocates a plurality of times in the extending direction of the rotation shaft20, so that the ply layer2comes into close contact with the inner liner layer1and forms a carcass band.

Further, on the second moving portion12side, when the stitcher is finished, the second molding drum D2is temporarily retracted from the stitcher position15to a location on the turntable13side. While the second molding drum D2is retracted to the location on the turntable13side, the stitcher device40retracts to the standby position17as shown inFIG.6. After the stitcher device40is retracted, the second molding drum D2moves to the transfer position16as shown inFIG.7. The transport device18is on standby at the transfer position16, and the carcass band is transferred from the second molding drum D2to the transport device18.

When the inner liner layer1is completed in the first moving portion11, the first molding drum D1moves to the turntable13while holding the inner liner layer1. In addition, after the carcass band is transferred to the transport device18, the second molding drum D2moves to the turntable13without holding anything.

As shown inFIG.8, when the first molding drum D1and the second molding drum D2are placed on the turntable13, the turntable13rotates 180°. As a result, the first molding drum D1moves to the second moving portion12side, and the second molding drum D2moves to the first moving portion11side.

After the molding drums D1and D2move via the turntable13, the molding of the inner liner layer1in the first moving portion11and the molding of the ply layer2in the second moving portion12are performed again in parallel at the same time.

Specifically, the ply layer2is laminated on the first molding drum D1that moves to the second moving portion12, and the ply layer2is stitched. The carcass band completed by the stitcher is transferred to the transport device18at the transfer position16. Further, the inner liner layer1is molded in the second molding drum D2that moves to the first moving portion11.

The molding of the inner liner layer1in the first moving portion11and the molding of the ply layer2in the second moving portion12as described above are repeated.

The carcass band transferred to the transport device18is transported to the subsequent process. In the subsequent process, well-known processes such as a process in which the bead3is set in the carcass band, a process in which the carcass band is expanded into the tire shape, a process in which the belt band (a cylindrical member including the belt4aand the tread) is combined with the expanded carcass band, and the like are performed, and a raw tire is completed. When the raw tire is placed in a mold and vulcanized, a pneumatic tire is completed.

Next, an effect of the present embodiment will be described. As described above, in the tire manufacturing device10of the present embodiment, the stitcher position15and the transfer position16are adjacent to each other. Therefore, the completed carcass band after the stitcher is finished can be immediately sent to the transfer position16. Therefore, a manufacturing efficiency of the tire is good.

In addition, when the completed carcass band after the stitcher is finished is sent to the transfer position16, it is not necessary to pass through the first moving portion11or the like, and therefore, there is no problem that the carcass band is not sent to the transfer position16until the molding of the inner liner layer1in the first moving portion11is completed.

In addition, in the tire manufacturing device10of the present embodiment, the first moving portion11, the second moving portion12, the stitcher position15, and the transfer position16are arranged in this order. Therefore, a member is transported in one direction from the first moving portion11in which the inner liner layer1is molded to the transfer position16to which the carcass band is transported. Therefore, a manufacturing efficiency of the carcass band is good.

In addition, in the tire manufacturing device10of the present embodiment, the stitcher device40for performing the stitcher at the stitcher position15can advance and retreat with respect to the stitcher position15. Therefore, when the molding drums D1and D2move from the stitcher position to the transfer position16in order to transfer the carcass band, the stitcher device40can be separated from the stitcher position15and does not interfere with the movement of the molding drums D1and D2.

In addition, in the tire manufacturing device10of the present embodiment, in the first moving portion11, the rubber strips extruded from the first extruding machine30, the second extruding machine31, and the third extruding machine32are helically wound around the molding drums D1and D2to mold the inner liner layer1. It takes time to mold the inner liner layer1by helically winding such rubber strips.

However, in the tire manufacturing device10of the present embodiment, an assembled body of the inner liner layer1and the ply layer2in front of the stitcher can be sent to the stitcher position15without passing through the first moving portion11. In addition, the carcass band after the stitcher can be sent to the transfer position16without passing through the first moving portion11. Therefore, even if it takes time to mold the inner liner layer1in the first moving portion11, the assembled body of the inner liner layer1and the ply layer2can be sent to the stitcher position15without waiting for the completion of the molding, and the carcass band can be sent to the transfer position16. Therefore, the manufacturing efficiency of the carcass band is good.

In addition, in the tire manufacturing method of the present embodiment, since the carcass band is sent from the stitcher position15to the adjacent transfer position16, the manufacturing efficiency of the carcass band is good.

Various modifications can be made to the above embodiment. Hereinafter, modifications of the embodiment will be described.

In a modification shown inFIG.9, a shaft116extending in a vertical direction is provided on one of left and right sides of the stitcher device40. The stitcher device40can rotate 90° around the shaft116when viewed from above.

When the molding drums D1and D2move between the stitcher position15and the transfer position16, or the like, the stitcher device40stands by in parallel with the second moving portion12at one of left and right standby positions117of the second moving portion12. The stitcher device40when at the standby position117is shown by a broken line inFIG.9.

On the other hand, when the stitcher device40performs the stitcher, the stitcher device40rotates 90° around the shaft116and advances to the stitcher position15. The stitcher device40when at the stitcher position15is shown by a solid line inFIG.9.

In a modification shown inFIG.10, a first moving portion211and a second moving portion212are provided in parallel. The first moving portion211is a location where inner liner layer molding drums D21and D22for molding the inner liner layer1move. In addition, the second moving portion212is a location where a ply layer molding drum D23for molding the ply layer2moves.

The first moving portion211is further separated into a first-first moving portion211aand a first-second moving portion211b. In addition, a turntable213is arranged between the first-first moving portion211aand the first-second moving portion211b. The turntable213of the present modification is the same as the turntable13of the embodiment.

Two extruding machines230and231are arranged beside the first-first moving portion211a, and one extruding machine232is arranged beside the first-second moving portion211b. The inner liner layer1is molded by winding rubber strips from the extruding machines230,231, and232while the inner liner layer molding drums D21and D22move back and forth between the first-first moving portion211aand the first-second moving portion211bvia the turntable213.

In addition, ply supply devices234and235and an extruding machine233are arranged beside the second moving portion212. While the ply layer molding drum D23moves in the second moving portion212, the ply layer2is molded by winding the carcass plies2afrom the ply supply devices234and235and winding the rubber strip from the extruding machine233.

In the vicinity of an end portion of the first-second moving portion211b, a stitcher position215is set on a rail of the first-second moving portion211b. At the stitcher position215, the same stitcher device40as that of the above embodiment can advance and retreat.

A transfer position216is provided adjacent to the stitcher position215. The transfer position216is a location where the carcass band completed at the stitcher position215is transferred to a transport device218. The transport device218has a cylindrical shape and can hold the ply layer2and the carcass band on an inner diameter side thereof.

From a location adjacent to an end portion of the second moving portion212to the transfer position216, a third moving portion201extending in a direction perpendicular to the first moving portion211and the second moving portion212is provided. The transport device218is movable in the third moving portion201.

A fourth moving portion202is provided at a location on a side opposite to the stitcher position215with the transfer position216interposed therebetween. A bead set drum D24for setting the bead3on an outer diameter side of the carcass band can move in the fourth moving portion202.

In a carcass band manufacturing method in this modification, first, the molding of the inner liner layer1in the first moving portion211and the molding of the ply layer2in the second moving portion212are performed in parallel.

Next, as shown inFIG.11, the transport device218receives the ply layer2from the ply layer molding drum D23and moves to the transfer position216. Further, the stitcher device40retreats from the stitcher position215to a standby position217.

When the transport device218reaches the transfer position216, as shown inFIG.12, the inner liner layer molding drum D22(or D21) enters the inner diameter side of the transport device218while holding the inner liner layer1. Then, the ply layer2is transferred from the transport device218to the outer diameter side of the inner liner layer1held by the inner liner layer molding drum D22(or D21). Therefore, an assembled body of the inner liner layer1and the ply layer2is completed on the inner liner layer molding drum D22(or D21).

Next, the inner liner layer molding drum D22(or D21) holding the assembled body of the inner liner layer1and the ply layer2retracts from the transfer position216(that is, moves toward the turntable213side), and retreats from the stitcher position215.

Next, the stitcher device40advances to the stitcher position215. Next, as shown inFIG.13, the inner liner layer molding drum D22(or D21) holding the assembled body of the inner liner layer1and the ply layer2enters the hole42of the stitcher device40at the stitcher position215. Then, the stitcher is performed by the stitcher device40, and the carcass band is completed on the inner liner layer molding drum D22(or D21).

Next, the inner liner layer molding drum D22(or D21) retracts from the stitcher position215(that is, moves to the turntable213side) while holding the carcass band. Next, the stitcher device40also retreats from the stitcher position215to the standby position217.

Next, while the inner liner layer molding drum D22(or D21) holds the carcass band, the inner liner layer molding drum D22(or D21) enters the inner diameter side of the transport device218at the transfer position216in the same manner as inFIG.12, and transfers the carcass band to the transport device218. After that, the transport device218transfers the carcass band to the bead set drum D24. The bead set drum D24moves in the fourth moving portion202to transport the carcass band to the next process.

Even in the device and method of this modification, since the stitcher position215and the transfer position216are adjacent to each other, the carcass band can be efficiently molded.