Patent Publication Number: US-2022219418-A1

Title: Tire manufacturing device and tire manufacturing method

Description:
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. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a plan view of a tire manufacturing device. 
         FIG. 2  is a front view of a molding drum. 
         FIG. 3  is a left side view of a stitcher device. 
         FIG. 4  is a time chart of a tire manufacturing method. 
         FIG. 5  is a plan view of the tire manufacturing device when a stitcher is being performed. 
         FIG. 6  is a plan view of the tire manufacturing device when the stitcher device is retracted to a standby position. 
         FIG. 7  is a plan view of the tire manufacturing device when the molding drum is in a transfer position. 
         FIG. 8  is a plan view of the tire manufacturing device when two molding drums are placed on a turntable. 
         FIG. 9  is a plan view of a tire manufacturing device of Modification 1. 
         FIG. 10  is a plan view of a tire manufacturing device of Modification 2. 
         FIG. 11  is a plan view of the tire manufacturing device of Modification 2 when a transport device is moved to a transfer position. 
         FIG. 12  is a plan view of the tire manufacturing device of Modification 2 when a molding drum of an inner liner layer enters a transport device. 
         FIG. 13  is a plan view of the tire manufacturing device of Modification 2 when the molding drum of the inner liner layer enters a stitcher device. 
         FIG. 14  is a schematic cross-sectional view showing each constituting member of a tire in an exploded manner. 
     
    
    
     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. 14  shows constituting members of a pneumatic tire in an exploded manner. As shown in  FIG. 14 , the constituting members of the pneumatic tire include an inner liner  1   a , chafers  1   b , and side walls  1   c . Depending on the type of tire to be manufactured, a layer in which the inner liner  1   a  and the chafers  1   b  are laminated may be called an inner liner layer. However, in the present embodiment, a layer in which the inner liner  1   a , the chafers  1   b , and the side walls  1   c  are laminated is called as an inner liner layer  1 , and in a tire manufacturing process, the inner liner  1   a , the chafers  1   b , and the side walls  1   c  are laminated to mold one inner liner layer  1 . 
     In addition, the constituting members provided on an outer diameter side of the inner liner layer  1  in the tire manufacturing process include one or more ( 2  in a case of the figure) carcass plies  2   a  and a squeegee  2   b . The carcass plies  2   a  and squeegee  2   b  are molded as a ply layer  2  in the tire manufacturing process. In the tire manufacturing process, the inner liner layer  1  and the ply layer  2  are 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 beads  3 . 
     In addition, the constituting members provided on the outer diameter side of the carcass band in the tire manufacturing process include one or more belts  4   a  ( 2  in a case of the figure), a reinforcing layer  4   b , a base  4   c , and a cap  4   d . The base  4   c  and the cap  4   d  are integrated to form a tread. In the tire manufacturing process, the belts  4   a , the reinforcing layer  4   b , 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 beads  3  are set and expanded into a tire shape to form a raw tire before vulcanization molding. In addition to the constituting members shown in  FIG. 14 , various members are used for the pneumatic tire as needed. 
     Next, a tire manufacturing device  10  of the present embodiment will be described. As shown in  FIG. 1 , the tire manufacturing device  10  of the present embodiment includes: a first molding drum D 1 ; a second molding drum D 2 ; a first moving portion  11  in which the molding drums D 1  and D 2  move in order to mold the inner liner layer  1 ; a second moving portion  12  in which the molding drums D 1  and D 2  move in order to mold the ply layer  2  on the inner liner layer  1 ; a turntable  13  that exchanges the molding drums D 1  and D 2  between the first moving portion  11  and the second moving portion  12 ; and a stitcher device  40  that presses from above the ply layer  2  laminated on the inner liner layer  1 . Further, the tire manufacturing device  10  is provided with a stitcher position  15  where the stitcher device  40  performs pressing, and a transfer position  16  described later. 
     Then, as shown in  FIG. 1 , the first moving portion  11 , the turntable  13 , the second moving portion  12 , the stitcher position  15 , and the transfer position  16  are arranged in this order. However, the stitcher position  15  is located on the second moving portion  12  and near an end portion of the second moving portion  12  on the transfer position  16  side. 
     The molding drums D 1  and D 2  have a cylindrical shape, and outer diameters thereof can be expanded or contracted by a well-known structure. When the inner liner layer  1  and the ply layer  2  are molded on the molding drums D 1  and D 2 , the outer diameters of the molding drums D 1  and D 2  are in an expanded state. When the inner liner layer  1  or the like is removed from the molding drums D 1  and D 2 , the outer diameters of the molding drums D 1  and D 2  are contracted. 
     As shown in  FIG. 2 , the molding drums D 1  and D 2  have a horizontal rotation shaft  20 . The molding drums D 1  and D 2  can rotate around the rotation shaft  20 . One end portion of the rotation shaft  20  is supported by a rotation device  21 . The rotation device  21  is provided with a motor for rotating the molding drums D 1  and D 2 . The rotation device  21  is mounted on a moving base  22 . 
     As shown in  FIG. 1 , the first moving portion  11  and the second moving portion  12  consist of rails  11   a  and  12   a , respectively. The moving base  22  runs on these rails  11   a  and  12   a . Therefore, the molding drums D 1  and D 2  can move the first moving portion  11  and the second moving portion  12 . The first moving portion  11  and the second moving portion  12  are parallel to each other. Extending directions of the first moving portion  11  and the second moving portion  12 , moving directions of the molding drums D 1  and D 2 , and an extending direction of the rotation shaft  20  of the moving molding drums D 1  and D 2  are the same. 
     A first extruding machine  30 , a second extruding machine  31 , and a third extruding machine  32  are arranged as a part of the tire manufacturing device  10  beside the first moving portion  11 . The first extruding machine  30 , the second extruding machine  31 , and the third extruding machine  32  are arranged along the first moving portion  11 . The first extruding machine  30 , the second extruding machine  31 , and the third extruding machine  32  are rubber supply devices, respectively. The first extruding machine  30 , the second extruding machine  31 , and the third extruding machine  32  extrude rubber strips, which are long rubber members, toward the molding drums D 1  and D 2  of the first moving portion  11 , respectively. 
     The rubber strip extruded from the first extruding machine  30  is for forming the side wall  1   c . Further, the rubber strip extruded from the second extruding machine  31  is for forming the chafers  1   b . In addition, the rubber strip extruded from the third extruding machine  32  is for forming the inner liner  1   a.    
     When the molding drums D 1  and D 2  move in front of the first extruding machine  30  and stop, the first extruding machine  30  starts extruding the rubber strip toward the molding drums D 1  and D 2 . While the first extruding machine extrudes the rubber strip, the molding drums D 1  and D 2  move at a constant speed in the extending direction of the rotation shaft  20  while rotating around the rotation shaft  20 . In this way, the rubber strip is helically wound around the molding drums D 1  and D 2 , and the side walls  1   c  are molded. The chafers  1   b  and the inner liner  1   a  are also molded by helically winding a rubber strip in the same manner as the side walls  1   c.    
     The molding drums D 1  and D 2  move on the first moving portion  11  and stop in front of the first extruding machine  30 , the front of the second extruding machine  31 , and the front of the third extruding machine  32 , respectively. Each time the molding drums are stopped, the rubber strip is helically wound around the molding drums D 1  and D 2 , and the tire constituting members (the side walls  1   c , the chafers  1   b , and the inner liner  1   a ) are molded. When these tire constituting members are molded, the inner liner layer  1  is completed. 
     A fourth extruding machine  33 , a first ply supply device  34 , and a second ply supply device  35  are arranged as a part of the tire manufacturing device  10  beside the second moving portion  12 . The fourth extruding machine  33  and the ply supply devices  34  and  35  are arranged so as to sandwich the second moving portion  12 . 
     The fourth extruding machine  33  is a rubber supply device. The fourth extruding machine  33  extrudes a rubber strip, which is a long rubber for forming the squeegee  2   b , toward the molding drums D 1  and D 2  of the second moving portion  12 . The squeegee  2   b  is molded by the fourth extruding machine  33  in the same method as a method of molding the side walls  1   c  by the first extruding machine  30 . 
     In addition, when the molding drums D 1  and D 2  move in front of the first ply supply device  34  and stop, the first ply supply device  34  sends sheet-shaped carcass plies  2   a  toward the molding drums D 1  and D 2 . The molding drums D 1  and D 2  are rotated to wind up the sheet-shaped carcass plies  2   a . Therefore, layers of the carcass plies  2   a  are molded on the molding drums D 1  and D 2 . The second ply supply device  35  also sends the sheet-shaped carcass plies  2   a  toward the molding drums D 1  and D 2  in the same manner as the first ply supply device  34 . Therefore, layers of second carcass plies  2   a  are molded on the molding drums D 1  and D 2 . 
     The molding drums D 1  and D 2  move on the second moving portion  12  and stop in front of the fourth extruding machine  33 , in front of the first ply supply device  34 , and in front of the second ply supply device  35 , respectively. Each time the molding drums stop, the rubber strip or the carcass plies  2   a  are wound around the molding drums D 1  and D 2 , and the tire constituting members (the squeegee  2   b  and the carcass plies  2   a ) are molded. When these tire constituting members are molded, the ply layer  2  is completed. 
     The stitcher device  40  is provided near an end portion of the second moving portion  12  on a side opposite to the first moving portion  11 . As shown in  FIG. 3 , the stitcher device  40  has a main body  41  and a plurality of rollers  43 . The main body  41  of the stitcher device  40  is formed with a circular hole  42  when viewed from the extending direction of the second moving portion  12 . A plurality of rollers  43  are arranged along a circumferential direction of the hole  42 . These rollers  43  are arranged in an annular shape. These rollers  43  are 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 body  41 . 
     When the stitcher device  40  is at the stitcher position  15 , the molding drums D 1  and D 2  in which the inner liner layer  1  and the ply layer  2  are laminated can enter the inner diameter side of an annular ring formed by the plurality of rollers  43 . When the molding drums D 1  and D 2  enter the inner diameter side of the annular ring formed by the plurality of rollers  43 , the plurality of rollers  43  advance toward the molding drums D 1  and D 2  and press the ply layer  2 . Further, by moving the molding drums D 1  and D 2  in the extending direction of the rotation shaft  20  (the extending direction of the second moving portion  12 ) while maintaining a pressed state, the whole of the ply layer  2  is pressed by the rollers to be brought into close contact with the inner liner layer  1 , and forms the carcass band. Hereinafter, the pressing of the ply layer  2  by the rollers  43  by a method in this paragraph will be referred to as “performing a stitcher”. 
     As shown in  FIGS. 1 and 3 , the stitcher device  40  is suspended from a rail  44 . The rail  44  extends in a direction orthogonal to the extending direction of the second moving portion  12 . The rail  44  extends horizontally from a location above the second moving portion  12  to a location away from the second moving portion  12 . The stitcher device  40  can be moved along the rail  44  by a servomotor  45  provided at an upper portion thereof. That is, the stitcher device  40  can be moved in the direction orthogonal to the moving direction of the molding drums D 1  and D 2  (which is also the extending direction of the second moving portion  12 ). 
     In a moving range of the stitcher device  40 , the location above the second moving portion  12  is the stitcher position  15 . In addition, in the moving range of the stitcher device  40 , the location away from the second moving portion is referred to as a standby position  17 . The stitcher device  40  is advanced to the stitcher position  15  when performing the stitcher, and is retracted to the standby position  17  when the molding drums D 1  and D 2  move between the stitcher position  15  and the transfer position  16 . 
     The circular turntable  13  is provided between the first moving portion  11  and the second moving portion  12 . A right end portion of the first moving portion  11  is in contact with the turntable  13 , and a left end portion of the second moving portion  12  is in contact with the turntable  13 . 
     The turntable  13  is rotatable by 180° by a motor provided below the turntable  13 . The turntable  13  is provided with rails  11   b  and  12   b  which are connected to the rails  11   a  of the first moving portion  11  and the rails  12   a  of the second moving portion  12 , respectively. The two rails  11   b  and  12   b  on the turntable  13  are parallel. 
     When the turntable  13  is in a first state, the rails  11   a  of the first moving portion  11  and one of the rails  11   b  of the turntable  13  are connected to each other, and the rails  12   a  of the second moving portion  12  and the other of rails  12   b  of the turntable  13  are connected to each other. When the turntable  13  is rotated by 180° to be in a second state, the rails  11   a  of the first moving portion  11  and the other of the rails  12   b  of the turntable  13  are connected to each other, and the rails  12   a  of the second moving portion  12  and one of the rails  11   b  of the turntable  13  are connected to each other. 
     Since the rails are connected in this way, the molding drums D 1  and D 2  can move between the first moving portion  11  and the turntable  13  and can move between the second moving portion  12  and the turntable  13  in the first state and the second state. Then, the molding drums D 1  and D 2  can move between the first moving portion  11  and the second moving portion  12  by passing through the turntable  13 . 
     However, a location adjacent to the end portion of the second moving portion  12  on the side opposite to the first moving portion  11  is the transfer position  16 . The transfer position  16  is a location where the completed carcass band is transferred from the molding drums D 1  and D 2  to a transport device  18 . 
     The transport device  18  is 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 D 1  and D 2  can enter an inner diameter side of the transport device  18  while holding the carcass band on an outer diameter surface. After the molding drums enter the inner diameter side, the suction members of the transport device  18  holds the outer diameter surface of the carcass band, and the diameters of the molding drums D 1  and D 2  are reduced, so that the carcass band is transferred from the molding drums D 1  and D 2  to the transport device  18 . 
     Next, a tire manufacturing method using the tire manufacturing device  10  of the present embodiment will be described. The tire manufacturing method of the present embodiment is executed by controlling each portion of the tire manufacturing device  10  by a control device (not shown). 
     As shown in  FIG. 4  (time chart), the molding of the inner liner layer  1  in the first moving portion  11  and the molding of the ply layer  2  in the second moving portion  12  are performed in parallel at the same time. 
     Specifically, in the first moving portion  11 , the inner liner  1   a , the chafers  1   b , and the side walls  1   c  are molded on the first molding drum D 1  in this order. Therefore, the inner liner layer  1  is completed. In addition, in the second moving portion  12 , the second molding drum D 2  (the second molding drum D 2  in the second moving portion  12  already holds the inner liner layer  1 ) moves, and the squeegee  2   b  and the carcass plies  2   a  are laminated on the inner liner layer  1  in this order. Therefore, the ply layer  2  is completed on the inner liner layer  1 . 
     In the second moving portion  12 , the stitcher is continuously performed after the ply layer  2  is completed. Specifically, in the second moving portion  12 , the stitcher device  40  moves to the stitcher position  15  as shown in  FIG. 1  at the same time as the completion of the ply layer  2  or at the timing before and after the completion of the ply layer  2 . Then, after the ply layer  2  is completed, the second molding drum D 2  moves to the stitcher position  15  and enters the hole  42  of the stitcher device  40  as shown in  FIG. 5 . When the second molding drum D 2  enters the hole  42 , the rollers  43  of the stitcher device  40  advances toward the second molding drum D 2  and presses the ply layer  2  on the second molding drum D 2 . While the pressed state by the rollers  43  is maintained, the second molding drum D 2  reciprocates a plurality of times in the extending direction of the rotation shaft  20 , so that the ply layer  2  comes into close contact with the inner liner layer  1  and forms a carcass band. 
     Further, on the second moving portion  12  side, when the stitcher is finished, the second molding drum D 2  is temporarily retracted from the stitcher position  15  to a location on the turntable  13  side. While the second molding drum D 2  is retracted to the location on the turntable  13  side, the stitcher device  40  retracts to the standby position  17  as shown in  FIG. 6 . After the stitcher device  40  is retracted, the second molding drum D 2  moves to the transfer position  16  as shown in  FIG. 7 . The transport device  18  is on standby at the transfer position  16 , and the carcass band is transferred from the second molding drum D 2  to the transport device  18 . 
     When the inner liner layer  1  is completed in the first moving portion  11 , the first molding drum D 1  moves to the turntable  13  while holding the inner liner layer  1 . In addition, after the carcass band is transferred to the transport device  18 , the second molding drum D 2  moves to the turntable  13  without holding anything. 
     As shown in  FIG. 8 , when the first molding drum D 1  and the second molding drum D 2  are placed on the turntable  13 , the turntable  13  rotates 180°. As a result, the first molding drum D 1  moves to the second moving portion  12  side, and the second molding drum D 2  moves to the first moving portion  11  side. 
     After the molding drums D 1  and D 2  move via the turntable  13 , the molding of the inner liner layer  1  in the first moving portion  11  and the molding of the ply layer  2  in the second moving portion  12  are performed again in parallel at the same time. 
     Specifically, the ply layer  2  is laminated on the first molding drum D 1  that moves to the second moving portion  12 , and the ply layer  2  is stitched. The carcass band completed by the stitcher is transferred to the transport device  18  at the transfer position  16 . Further, the inner liner layer  1  is molded in the second molding drum D 2  that moves to the first moving portion  11 . 
     The molding of the inner liner layer  1  in the first moving portion  11  and the molding of the ply layer  2  in the second moving portion  12  as described above are repeated. 
     The carcass band transferred to the transport device  18  is transported to the subsequent process. In the subsequent process, well-known processes such as a process in which the bead  3  is 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 belt  4   a  and 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 device  10  of the present embodiment, the stitcher position  15  and the transfer position  16  are adjacent to each other. Therefore, the completed carcass band after the stitcher is finished can be immediately sent to the transfer position  16 . 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 position  16 , it is not necessary to pass through the first moving portion  11  or the like, and therefore, there is no problem that the carcass band is not sent to the transfer position  16  until the molding of the inner liner layer  1  in the first moving portion  11  is completed. 
     In addition, in the tire manufacturing device  10  of the present embodiment, the first moving portion  11 , the second moving portion  12 , the stitcher position  15 , and the transfer position  16  are arranged in this order. Therefore, a member is transported in one direction from the first moving portion  11  in which the inner liner layer  1  is molded to the transfer position  16  to which the carcass band is transported. Therefore, a manufacturing efficiency of the carcass band is good. 
     In addition, in the tire manufacturing device  10  of the present embodiment, the stitcher device  40  for performing the stitcher at the stitcher position  15  can advance and retreat with respect to the stitcher position  15 . Therefore, when the molding drums D 1  and D 2  move from the stitcher position to the transfer position  16  in order to transfer the carcass band, the stitcher device  40  can be separated from the stitcher position  15  and does not interfere with the movement of the molding drums D 1  and D 2 . 
     In addition, in the tire manufacturing device  10  of the present embodiment, in the first moving portion  11 , the rubber strips extruded from the first extruding machine  30 , the second extruding machine  31 , and the third extruding machine  32  are helically wound around the molding drums D 1  and D 2  to mold the inner liner layer  1 . It takes time to mold the inner liner layer  1  by helically winding such rubber strips. 
     However, in the tire manufacturing device  10  of the present embodiment, an assembled body of the inner liner layer  1  and the ply layer  2  in front of the stitcher can be sent to the stitcher position  15  without passing through the first moving portion  11 . In addition, the carcass band after the stitcher can be sent to the transfer position  16  without passing through the first moving portion  11 . Therefore, even if it takes time to mold the inner liner layer  1  in the first moving portion  11 , the assembled body of the inner liner layer  1  and the ply layer  2  can be sent to the stitcher position  15  without waiting for the completion of the molding, and the carcass band can be sent to the transfer position  16 . 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 position  15  to the adjacent transfer position  16 , 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. 
     Modification 1 
     In a modification shown in  FIG. 9 , a shaft  116  extending in a vertical direction is provided on one of left and right sides of the stitcher device  40 . The stitcher device  40  can rotate 90° around the shaft  116  when viewed from above. 
     When the molding drums D 1  and D 2  move between the stitcher position  15  and the transfer position  16 , or the like, the stitcher device  40  stands by in parallel with the second moving portion  12  at one of left and right standby positions  117  of the second moving portion  12 . The stitcher device  40  when at the standby position  117  is shown by a broken line in  FIG. 9 . 
     On the other hand, when the stitcher device  40  performs the stitcher, the stitcher device  40  rotates 90° around the shaft  116  and advances to the stitcher position  15 . The stitcher device  40  when at the stitcher position  15  is shown by a solid line in  FIG. 9 . 
     Modification 2 
     In a modification shown in  FIG. 10 , a first moving portion  211  and a second moving portion  212  are provided in parallel. The first moving portion  211  is a location where inner liner layer molding drums D 21  and D 22  for molding the inner liner layer  1  move. In addition, the second moving portion  212  is a location where a ply layer molding drum D 23  for molding the ply layer  2  moves. 
     The first moving portion  211  is further separated into a first-first moving portion  211   a  and a first-second moving portion  211   b . In addition, a turntable  213  is arranged between the first-first moving portion  211   a  and the first-second moving portion  211   b . The turntable  213  of the present modification is the same as the turntable  13  of the embodiment. 
     Two extruding machines  230  and  231  are arranged beside the first-first moving portion  211   a , and one extruding machine  232  is arranged beside the first-second moving portion  211   b . The inner liner layer  1  is molded by winding rubber strips from the extruding machines  230 ,  231 , and  232  while the inner liner layer molding drums D 21  and D 22  move back and forth between the first-first moving portion  211   a  and the first-second moving portion  211   b  via the turntable  213 . 
     In addition, ply supply devices  234  and  235  and an extruding machine  233  are arranged beside the second moving portion  212 . While the ply layer molding drum D 23  moves in the second moving portion  212 , the ply layer  2  is molded by winding the carcass plies  2   a  from the ply supply devices  234  and  235  and winding the rubber strip from the extruding machine  233 . 
     In the vicinity of an end portion of the first-second moving portion  211   b , a stitcher position  215  is set on a rail of the first-second moving portion  211   b . At the stitcher position  215 , the same stitcher device  40  as that of the above embodiment can advance and retreat. 
     A transfer position  216  is provided adjacent to the stitcher position  215 . The transfer position  216  is a location where the carcass band completed at the stitcher position  215  is transferred to a transport device  218 . The transport device  218  has a cylindrical shape and can hold the ply layer  2  and the carcass band on an inner diameter side thereof. 
     From a location adjacent to an end portion of the second moving portion  212  to the transfer position  216 , a third moving portion  201  extending in a direction perpendicular to the first moving portion  211  and the second moving portion  212  is provided. The transport device  218  is movable in the third moving portion  201 . 
     A fourth moving portion  202  is provided at a location on a side opposite to the stitcher position  215  with the transfer position  216  interposed therebetween. A bead set drum D 24  for setting the bead  3  on an outer diameter side of the carcass band can move in the fourth moving portion  202 . 
     In a carcass band manufacturing method in this modification, first, the molding of the inner liner layer  1  in the first moving portion  211  and the molding of the ply layer  2  in the second moving portion  212  are performed in parallel. 
     Next, as shown in  FIG. 11 , the transport device  218  receives the ply layer  2  from the ply layer molding drum D 23  and moves to the transfer position  216 . Further, the stitcher device  40  retreats from the stitcher position  215  to a standby position  217 . 
     When the transport device  218  reaches the transfer position  216 , as shown in  FIG. 12 , the inner liner layer molding drum D 22  (or D 21 ) enters the inner diameter side of the transport device  218  while holding the inner liner layer  1 . Then, the ply layer  2  is transferred from the transport device  218  to the outer diameter side of the inner liner layer  1  held by the inner liner layer molding drum D 22  (or D 21 ). Therefore, an assembled body of the inner liner layer  1  and the ply layer  2  is completed on the inner liner layer molding drum D 22  (or D 21 ). 
     Next, the inner liner layer molding drum D 22  (or D 21 ) holding the assembled body of the inner liner layer  1  and the ply layer  2  retracts from the transfer position  216  (that is, moves toward the turntable  213  side), and retreats from the stitcher position  215 . 
     Next, the stitcher device  40  advances to the stitcher position  215 . Next, as shown in  FIG. 13 , the inner liner layer molding drum D 22  (or D 21 ) holding the assembled body of the inner liner layer  1  and the ply layer  2  enters the hole  42  of the stitcher device  40  at the stitcher position  215 . Then, the stitcher is performed by the stitcher device  40 , and the carcass band is completed on the inner liner layer molding drum D 22  (or D 21 ). 
     Next, the inner liner layer molding drum D 22  (or D 21 ) retracts from the stitcher position  215  (that is, moves to the turntable  213  side) while holding the carcass band. Next, the stitcher device  40  also retreats from the stitcher position  215  to the standby position  217 . 
     Next, while the inner liner layer molding drum D 22  (or D 21 ) holds the carcass band, the inner liner layer molding drum D 22  (or D 21 ) enters the inner diameter side of the transport device  218  at the transfer position  216  in the same manner as in  FIG. 12 , and transfers the carcass band to the transport device  218 . After that, the transport device  218  transfers the carcass band to the bead set drum D 24 . The bead set drum D 24  moves in the fourth moving portion  202  to transport the carcass band to the next process. 
     Even in the device and method of this modification, since the stitcher position  215  and the transfer position  216  are adjacent to each other, the carcass band can be efficiently molded.