JP2014136416A - Molding method and molding apparatus of pneumatic tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stick laminated strip members in a condition that the laminated strip members are surely and closely contacted to each other by exhausting efficiently and sufficiently residual air among the strip members, when sticking a strip member constituting a pneumatic tire onto stuck strip members stuck on a molding drum.SOLUTION: A pneumatic tire molding method includes a winding process for winding a strip member discharged by a strip member discharge device onto an outer peripheral surface of a molding drum or an outer peripheral surface of strip members on the outer peripheral surface of the molding drum, and a compression-bonding process for compression-bonding the discharged strip member to the outer peripheral surface of the molding drum or the outer peripheral surface of the strip members on the outer peripheral surface of the molding drum at the same time as the winding process. In the compression-bonding process, compression-bonding in the all area of the compression-bonding width in the axial direction of the drum for the strip members to be stuck is performed at a same time, and the compression-bonding process of each of the plural strip members is performed every time when each winding process of the plural strip members is finished.

Description

  The present invention relates to a pneumatic tire molding method and molding equipment.

  In the process of pasting the unvulcanized rubber member constituting the pneumatic tire on the inner liner on the molding drum, or further pasting another unvulcanized rubber member on the pasted unvulcanized rubber member, Since air remains between the pasting surfaces, conventionally, the unvulcanized rubber member pasted on the molding drum is pressurized with a crimping roll called a stitching roll, and the air between the pasting surfaces is discharged. (See Patent Document 1).

International Publication No. 2009/150934

  The conventional air discharge method using a pressure-bonding roll has the disadvantages that the pressure-bonding force is strong and the carcass ply is easily wrinkled. Moreover, the process of pressurizing with a pressure-bonding roll after pasting all members was separately required. An object of this invention is to provide the method and installation which can discharge | emit the residual air between strip | belt-shaped members efficiently and fully.

  The invention according to claim 1 is a pneumatic tire molding method in which a plurality of belt-shaped members constituting a pneumatic tire are sequentially attached to the outer peripheral surface of the molding drum, wherein the plurality of belt-shaped members with respect to the outer peripheral surface of the molding drum Is a winding step of winding the belt-shaped member carried out from the belt-shaped member unloading device around the outer peripheral surface of the molding drum or the peripheral surface of the already-bonded belt-shaped member already pasted on the outer peripheral surface of the molding drum, Simultaneously with the winding step, the belt-like member wound around the outer peripheral surface of the molding drum or the outer peripheral surface of the already-attached belt-like member already attached to the outer peripheral surface of the molding drum is moved on the outer peripheral surface of the molding drum. It consists of a crimping process for crimping to the already-adhered band-shaped part, and in this crimping process, the crimping within the entire crimping width region in the drum axis direction of the band-shaped member to be crimped is performed simultaneously. Deeds, the crimping process of the plurality of the belt-shaped member, a pneumatic tire molding method characterized by each winding step of the plurality of the belt-shaped member is performed each time the ends.

  According to the present invention, it is possible to efficiently produce a high-quality pneumatic tire in which the belt-shaped members constituting the tire are in close contact with each other.

  Further, whenever the belt-like member carried out from the belt-like member carrying-out means is wound around the already-attached belt-like member on the outer peripheral surface of the molding drum, the belt-like member is directly attached to the belt-like member on the outer peripheral surface of the molding drum. Since it is crimped to the member, it becomes possible to closely adhere both the band-like members to each other without gaps, and it is possible to reliably discharge the residual air between the plurality of band-like members to be laminated, and to produce a highly reliable pneumatic tire. be able to.

1 is a cross-sectional view of a pneumatic tire according to an embodiment of the present invention. The cross-sectional view which showed the state by which a tire structural member is sequentially arrange | positioned to a molding drum. The front view of the shaping | molding equipment of the pneumatic tire which concerns on the form of one Example of this invention. FIG. 4 is a front view of a pneumatic tire molding facility according to an embodiment of the present invention viewed from the IV direction in FIG. 3. It is the arrow line view which illustrated the arrangement | sequence state of the macholol in the shaping | molding equipment of the pneumatic tire cut | disconnected by the VV line | wire of FIG. FIG. 6 is a longitudinal sectional view of macolol and a macolol peripheral portion cut along the line VI-VI in FIG. 5. It is a VII-VII arrow line view of FIG. It is a VIII-VIII transverse cross section of Drawing 7. FIG. 5 is a plan view illustrating an arrangement state of maco rolls when the leading edge in the attaching direction of the inner liner first attached to the outer peripheral surface of the molding drum coincides with the generatrix of the outer peripheral surface of the molding drum. It is the top view which illustrated the arrangement | sequence state of a macholol in case a chafer is affixed next to an inner liner, and the position where a chafer is affixed. It is the top view which illustrated the arrangement | positioning state of a macolol and the position where a carcass ply is affixed when a carcass ply is affixed next to a chafer. It is the top view which illustrated the arrangement | sequence state of the macolol at the time of the sticking direction frontmost edge of the inner liner first affixed on the outer peripheral surface of a shaping | molding drum being formed in a parallelogram.

Hereinafter, Example 1 which illustrated the implementation status of the pneumatic tire molding method and pneumatic tire molding facility according to the present invention illustrated in FIGS. 1 to 11 will be described.
A pneumatic tire 0 having a cross-sectional shape as shown in FIG. 1 includes an inner liner 2, a chafer 3, a carcass ply 4, a bead 5, a bead filler 6, a sidewall 7, a belt 8 and a belt shown in FIG. The belt-shaped member 1 made of a tread 9 or the like is used, and is molded according to the pneumatic tire molding method of the present invention using the pneumatic tire molding facility 10 of the present invention shown in FIGS.

First, the structure of the pneumatic tire molding facility 10 of the present invention will be described.
In the pneumatic tire molding facility 10, the direction in which the belt-like member 1 is carried out to the molding drum 11 by the belt-like member unloading device 15 is the front, the direction parallel to the drum rotation shaft 13 of the molding drum 11 is the left-right direction, The direction orthogonal to the left-right direction is the up-down direction.

  The molding drum 11 is rotationally driven at a preset rotational speed by a motor (not shown) connected to the drum rotation shaft 13, and in the belt-shaped member unloading device 15, an endless belt 17 is installed on a pair of pulleys 16 and One of the pulleys 16 is rotationally driven in conjunction with the molding drum 11 so that the peripheral speed is the same as the peripheral speed of the drum outer peripheral surface 12, and the transport direction extension surface of the transport surface 17a of the endless belt 17 is molded. The direction of the drum 11 is substantially in contact with the drum outer peripheral surface 12.

  In addition, the belt-shaped member 1 has a rectangular parallelepiped-shaped crimp unit casing 21 flat in the vertical and horizontal directions where the maco roll 33 of the belt-shaped member crimping device 20 is in contact with the conveyance surface 17a of the endless belt 17 adjacent to the drum outer peripheral surface 12. The molding drum 11 is disposed along the upper and lower surfaces connecting the portion adjacent to the drum outer peripheral surface 12 and the drum rotation shaft 13.

  As shown in FIG. 4, a number of compartments 23 are formed in the crimping unit casing 21 of the belt-shaped member crimping apparatus 20 with partition walls 22 arranged at equal intervals in the left-right direction. As shown in the figure, the macolol unit 24 is fitted in the compartment 23 so as to be movable in the front-rear direction, and the unit drive shaft 25 oriented in the front-rear direction penetrates the macolol unit 24, and both ends of the unit drive shaft 25 are Is fitted and supported by a pivot 26 provided on the inner surface of the crimping unit casing 21, and a unit front / rear drive motor 27 (see FIGS. 7 and 8) is provided in the macolol unit 24. When the unit drive shaft 25 is rotated forward and backward by the motor 27, the macolol unit 24 can move back and forth within the crimping unit casing 21.

  Further, as shown in FIG. 7, an opening 21b communicating with the lower wall 21a of the crimping unit casing 21 in the vertical direction is formed, and the Macolol pivot support plate 29 is slid back and forth and up and down in the opening 21b. A rack 29a is formed on one side of the Macoroll pivotal support plate 29, and the gear 30 that meshes with the rack 29a is connected to the Macoroll unit 24 and an elevating motor 31 (see FIG. 8). It is integrally fitted to the rotating shaft 31a, and the Macolor pivot support plate 29 can be moved up and down by forward and reverse rotation of the lifting motor 31.

  As shown in FIG. 7, a pair of guide rolls 35 in contact with the front and rear surfaces of the upper part of the macolol pivot support plate 29 are pivotally supported. The guide roll 35 is prevented from inclining back and forth, so that the macoroll pivotal support plate 29 can be moved up and down smoothly when the elevating motor 31 operates. In addition, if the guide roll 35 is provided not only on the upper part of the macolol pivot support plate 29 but also on the lower part, the macolol pivot support plate 29 can be raised and lowered more smoothly.

  Furthermore, a maco roll 33 is pivotally supported on the lower end portion of the macho roll pivot plate 29 via a roll support shaft 32, and the thickness of each part in the width direction of the belt-like member 1 is changed on the outer circumference of the maco roll 33. Accordingly, an elastic outer ring 34 is formed in which the elastic restoring force does not change greatly.

  Each belt-like member crimping device 20 is provided with one unit drive shaft 25 at the substantially vertical center of the crimp unit casing 21, but two unit drive shafts 25 are provided above and below the crimp unit casing 21, If the unit drive shaft 25 is connected by a chain transmission means or the like, the machol unit 24 can be driven smoothly.

  Next, a method for molding the pneumatic tire 0 using the pneumatic tire molding facility 10 shown in FIGS. 3 to 8 will be described.

  First, when a highly airtight inner liner 2 formed in a rectangular shape is affixed to the drum outer peripheral surface 12 of the molding drum 11, in FIG. On the basis of the control signal, the unit front / rear drive motor 27 (see FIG. 8) in the macolol unit 24 is driven to appropriately rotate the unit drive shaft 25, and is bent stepwise along the line VI-VI in FIG. After moving the macoroll unit 24 in a substantially inverted V shape, the elevating motor 31 brings the macolol 33 into contact with the drum outer peripheral surface 12 of the molding drum 11.

  Next, in FIG. 3, while the drum rotating shaft 13 of the forming drum 11 is rotated counterclockwise, the inner liner 2 is moved at the same transfer speed as the peripheral speed of the drum rotating shaft 13 by the belt-shaped member unloading device 15. As shown in FIG. 5, the inner liner 2 moves in the direction of arrow A, and the leading edge 2a of the inner liner 2 approaches the belt-like member crimping device 20 and lift motor as shown in FIG. By the forward rotation of 31, the Macolol pivotal support plate 29 descends, and the Macolol 33 of the inverted V-shaped leading Macolol unit 24 a comes into contact with the left and right central portions of the distal end edge 2 a (see FIG. 9). The edge 2a is pressure-bonded to the drum outer peripheral surface 12 of the molding drum 11, and interlocked with the rotation of the molding drum 11, by the maco roll 33 of the maco roll unit 24 adjacent to the left and right from the leading maco roll unit 24a. Since the leading edge 2a is pressed one after another toward the left and right sides, the residual air in the space between the drum outer peripheral surface 12 and the inner liner 2 moves in the left and right direction, and the left and right edges of the inner liner 2 As a result, the drum outer peripheral surface 12 and the inner liner 2 can be in close contact with each other without gaps.

  Since the inner liner 2 is pasted when the rear end edge (not shown) of the inner liner 2 passes just below the right and left outermost maco rolls 33, the inside of the maco roll unit 24 of the crimping unit casing 21 thereafter. In addition, after moving only 3 to 4 macolol units 24 adjacent to the left and right sides respectively in an inverted V shape as shown in FIG. 10, only the macolol 33 of the macolol unit 24 is lowered, Two chafers 3 are unloaded on both the left and right sides of the inner liner 2 affixed to the drum outer peripheral surface 12 of the molding drum 11, and the same operations as described above are carried out to attach the two chafers 3 to the inner liner. 2 can be adhered to both the left and right side portions without a gap.

  Further, as shown in FIG. 11, the carcass ply 4 extends over the outer portion of the two chafers 3 attached to the left and right side portions of the inner liner 2 and the portion protruding from the chafer 3 to the inner liner 2. Can be molded in the same manner as described above, and by sequentially performing such operations on the bead 5, the bead filler 6, the sidewall 7, the belt 8 and the tread 9, an unvulcanized pneumatic green tire can be molded. This pneumatic green tire can be inserted into an upper and lower split mold of a vulcanizer (not shown), and then affixed to the inner liner of the pneumatic green tire, and a high-temperature and high-pressure fluid is injected into the bladder to complete the pneumatic tire. be able to.

  Further, the inner liner 2, the chafer 3, and the carcass ply 4 that are the belt-like members 1 are moved without moving the plurality of maco rolls 33 toward each other over the entire width direction of the molding drum 11 with respect to the drum rotating shaft 13 of the molding drum 11. , Beads 5 ... are stacked one after another, so that the air between the laminated strips 1 can flow to the outside of the molding drum 11 and be released into the atmosphere, so high-quality pneumatic tires can be produced efficiently. can do.

  In the embodiment shown in FIGS. 1 to 11, the leading edge 2 a of the inner liner 2 attached to the drum outer peripheral surface 12 of the molding drum 11 is perpendicular to the side edge of the inner liner 2. When the leading edge 2a of the tire overlaps with the trailing edge (not shown), the overlapping portion may be concentrated in one place with respect to the circumferential direction of the pneumatic tire 0. To avoid this, it is formed in a parallelogram. When the inner liner 2 is used, as shown in FIG. 12, the distances X, Y between the left and right ends 2c, 2d of the two leading edges 2b of the inner liner 2 and the left and right outermost ends 33c, 33d Since the left and right outer edges 33c and 33d are separated from the left and right outer edges of the rear end edge of the inner liner 2 at the same time, the residual between the inner liner 2 and the drum outer peripheral surface 12 of the molding drum 11 As a result, the exhaust of air is terminated at the same time, and the exhaust of the pneumatic tire 0 can be evenly discharged.

  Each time the belt-like member 1 carried out from the belt-like member carrying-out device 15 is wound around the already-attached belt-like member 1 on the outer peripheral surface 12 of the molding drum, the belt-like member 1 is directly put on the outer peripheral surface 12 of the molding drum. Since the two belt-like members 1 can be brought into close contact with each other without any gaps, the residual air between the plurality of belt-like members 1 to be stacked can be surely discharged and reliable. A highly efficient pneumatic tire 0 can be produced.

  In general, the band-like member 1 attached to the already-attached belt-like member 1 already stuck to the outer peripheral surface 12 of the molding drum is such that the thickness of the peripheral part of any belt-like member 1 is in the other central part. According to the conventional tire molding equipment 10 which is thinner than that of the belt-shaped member 1 and presses the belt-shaped member 1 with an integrated crimping roll, the pressure applied to the thin peripheral portion of the belt-shaped member 1 is low. As a result of increasing the rotational torque of the lifting / lowering motor 31, only the thin peripheral portion of the band-shaped member 1 to be bonded to the already-bonded band-shaped member 1 can be strongly pressure-bonded. The peripheral part of the strip-shaped member 1 to be peeled off is difficult to peel off, and it is possible to reliably keep the adhered state to the already-bonded strip-shaped member 1.

  When the subsequent band member 1 is bonded to the already bonded band member 1 that has already been bonded to the outer peripheral surface 12 of the molding drum 11, it comes into contact with the previously bonded band member 1 other than the subsequent band member 1. By pulling up the maco roll 33 upward, it is possible not to apply unnecessary pressure-bonding force to the already-bonded region, so that the pressure-bonding force more than necessary is not applied to the already-bonded belt-shaped member 1. Therefore, the already-attached belt-like member 1 can retain its initial shape and is not deformed, and the cord in the already-attached belt-like member 1 is prevented from being deformed into a wave shape.

  With respect to the unvulcanized rubber member 1 that is easily deformed, the air between the unvulcanized rubber members 1 can be sufficiently discharged with the minimum necessary pressure, and the deformation of the unvulcanized rubber member 1 due to excessive pressure can be prevented. Can be avoided.

  The macolol 33 that has once contacted the band-shaped member 1 to be pasted maintains the state of contact with the band-shaped member 1 to be pasted until the pasting operation is completed. Since 33 is separated from the belt-like member 1, there is no gap between the belt-like member 1 already pasted and the belt-like member 1 to be pasted thereon, and the laminated belt-like members 1 are strongly bonded to each other. There is no risk of residual air intervening.

  A plurality of belt-like members 1 constituting the pneumatic tire 0 are successively carried out by a belt-like member unloading device toward the outer peripheral surface 12 of the molding drum 11 formed in the cylindrical body, and the cylindrical body molding drum 11 is Winding around the outer peripheral surface 12 of the already-bonded strip-shaped member 1 on the outer peripheral surface 12 of the molding drum rotating around the center line of the sheet, and simultaneously performing the winding step and the crimping step of the strip-shaped member 1 to be crimped. The crimping | compression-bonding process of the strip | belt-shaped member 1 can be performed whenever each winding process of the said some strip | belt-shaped member 1 is complete | finished.

  The pressure-bonding roll is constituted by a plurality of maco rolls 33 divided into required parts over the width direction of the molding drum 11, and the thickness of each part in the width direction of the belt-like member 1 is accommodated on the outer periphery of the maco roll 33. Since the elastic outer ring 34 that can be appropriately elastically deformed is provided, the band-shaped member 1 that is pressure-bonded by the macolol 33 is provided with the macolol 33 for each part of the band-shaped member 1 in the width direction of the molding drum 11. As a result of being able to apply an appropriate pressure, the air between the band-shaped member 1 and the member to be adhered on the outer peripheral surface 12 of the molding drum can be reliably discharged without deformation of the band-shaped member 1.

  In a plan view of the molding drum 11 as viewed from above, the pasting start edge width of the band-shaped member 1 that is pasted on the pasted band-shaped member 1 on the outer peripheral surface 12 of the molding drum 11 in the width direction. At the center of the direction, the left and right center maco rolls 33 corresponding to the center of the pasting start edge direction of the band-shaped member 1 among the plurality of maco rolls 33 are disposed, and the center maco rolls 33 are sequentially separated from each other in the width direction of the molding drum 11. The remaining maco roll 33 is disposed across the width direction of the outer peripheral surface 12 of the molding drum in a state where the remaining maco roll 33 is disposed at a position away from the start edge of the band-shaped member 1 toward the rotation direction of the molding drum 1. Among the plurality of maco rolls 33, the left and right central maco rolls 33 corresponding to the center of the band start member 1 in the width direction of the pasting are pressure-bonded to the center of the band start member 1 by the rotation of the molding drum 11, and the molding is performed. Drum 11 As the rotation proceeds, a plurality of left and right maco rolls 33 adjacent to the central maco roll 33 press the application start edges of the belt-like member 1 one after another, so that the outer peripheral surface 12 of the molding drum 11 or the molding drum 11 is present in the gap between the belt-like member 1 wound around the outer peripheral surface of the already-attached belt-like member 1 already attached to the outer peripheral surface 12 of the belt 11 and the already-attached belt-like member 1 on the outer peripheral surface of the molding drum 11. As a result of air being able to be smoothly discharged into the atmosphere while flowing from the central portion in the width direction of the strip-shaped member 1 toward the left and right edges of the strip-shaped member 1, the two strip-shaped members 1 on the molding drum 11 are integrated with each other. Therefore, it is possible to efficiently produce a high-quality pneumatic tire 0.

  When the inner liner 2 formed in a parallelogram is attached to the outer peripheral surface 12 of the cylindrical molding drum 11, the inner liner 2 is rotated in the direction of rotation of the molding drum 11 from the rightmost one of the left and right application directions. One outermost maco roll 33 of the plurality of maco rolls 33 is disposed at a point separated by a predetermined length X, and is separated by a predetermined length X in the rotational direction of the forming drum 11 from the other end of the inner liner 2 in the attaching direction. The other outermost macho roll 33 of the plurality of maco rolls 33 is disposed at the point where the left and right central maco rolls 33 and the left and right outermost maco rolls 33 are excluded from the left and right central maco rolls 33. 33 and the left and right outermost macho rolls 33 are arranged on a straight line connecting the left and right outermost macho rolls 33 so that the left and right outermost macho rolls 33 At the same time from the last edge of the liner 2, the parallelogram inner liner 2 can be crimped and pasted at the same time, and the parallelogram inner liner 2 can be applied evenly to the outer peripheral surface 12 of the molding drum. It can be carried out uniformly.

  The outer peripheral surface of the belt-like member 1 is pressed against the outer peripheral surface of the belt-like member 1 corresponding to the thickness of each part of the belt-like member 1 attached to the outer peripheral surface of the molding drum or the outer peripheral surface of the belt-like member 1 already attached to the outer peripheral surface 12 of the molding drum. Since the upper and lower positions of the plurality of maco rolls 33 can be controlled appropriately, each part of the band-like member 1 to be attached is attached to the outer peripheral surface 12 of the mating drum on the other side or the outer peripheral surface 12 of the forming drum. As a result of being able to be crimped to each of them with an appropriate pressure, the air between the belt-like member 1 and its counterpart member can be exhausted automatically and surely and efficiently evenly, and both the members 1 can be joined together. it can.

  Even if there is a variation in the set thickness at each part of the band-shaped member 1 to be pasted, the band-shaped member 1 can be crimped to the member to be crimped by an appropriate pressing force without being greatly affected by the variation. As a result, the two can be integrally coupled without generating a gap between the belt-shaped member 1 and the member to be bonded.

  Other than the periphery of the band-shaped member 1 wound around the outer peripheral surface 12 of the molding drum or the outer surface of the band-shaped member that is wound around the outer peripheral surface 12 of the molding drum 11 and crimped. Since it is set higher than the pressure-bonding force, the strip-shaped member 1 is prevented from peeling off from the peripheral portion.

DESCRIPTION OF SYMBOLS 0 ... Pneumatic tire, 1 ... Band-shaped member, 2 ... Inner liner, 3 ... Chafer, 4 ... Carcass ply, 5 ... Bead, 6 ... Bead filler, 7 ... Side wall, 8 ... Belt, 9 ... Tread, 10 ... Air Entering tire molding equipment, 11 ... molding drum, 12 ... drum outer peripheral surface, 13 ... drum rotating shaft, 15 ... belt-like member unloading device, 16 ... pulley, 17 ... endless belt,
20 ... strip-shaped member crimping device, 21 ... crimping unit casing, 22 ... partition wall, 23 ... compartment, 24 ... macoroll unit, 25 ... unit drive shaft, 26 ... pivot support, 27 ... unit front / rear drive motor, 28 ... notch Guide part, 29 ... Makorol pivot plate,
30 ... gear, 31 ... elevating motor, 32 ... roll support shaft, 33 ... maco roll, 34 ... elastic outer ring, 35 ... guide roll.

Further, as shown in FIG. 11, the carcass ply 4 extends over the outer portion of the two chafers 3 attached to the left and right side portions of the inner liner 2 and the portion protruding from the chafer 3 to the inner liner 2. Can be molded in the same manner as described above, and by sequentially performing such operations on the bead 5, the bead filler 6, the belt 7, the tread 8, and the sidewall 9 , an unvulcanized pneumatic green tire can be molded. This pneumatic green tire can be inserted into the upper and lower split molds of a vulcanizer (not shown), and then affixed to the inner liner of the pneumatic green tire, and high temperature and high pressure fluid is injected into the bladder to complete the pneumatic tire. be able to.

Further, as shown in FIG. 11, the carcass ply 4 extends over the outer portion of the two chafers 3 attached to the left and right side portions of the inner liner 2 and the portion protruding from the chafer 3 to the inner liner 2. Can be molded in the same manner as described above, and by sequentially performing such operations on the bead 5, the bead filler 6, the belt 7, the tread 8, and the sidewall 9 , an unvulcanized pneumatic green tire can be molded. This pneumatic green tire can be inserted into the upper and lower split molds of a vulcanizer (not shown), and then affixed to the inner liner of the pneumatic green tire, and high temperature and high pressure fluid is injected into the bladder to complete the pneumatic tire. be able to.

DESCRIPTION OF SYMBOLS 0 ... Pneumatic tire, 1 ... Band-shaped member, 2 ... Inner liner, 3 ... Chafer, 4 ... Carcass ply, 5 ... Bead, 6 ... Bead filler, 7 ... Belt, 8 ... Tread, 9 ... Side wall , 10 ... Air Included tire molding equipment, 11 ... molding drum, 12 ... drum outer peripheral surface, 13 ... drum rotating shaft, 15 ... strip member unloading device, 16 ... pulley, 17 ... endless belt, 20 ... strip member crimping device, 21 ... crimp unit casing , 22 ... Bulkhead, 23 ... Compartment, 24 ... Macoroll unit, 25 ... Unit drive shaft, 26 ... Pivot, 27 ... Unit front / rear drive motor, 28 ... Notch guide, 29 ... Macorol pivot plate, 30 ... Gear 31, lift motor 32, roll support shaft 33, maco roll 34, elastic outer ring 35 35 guide roll

Claims (5)

A pneumatic tire molding method in which a plurality of belt-shaped members constituting a pneumatic tire are sequentially attached to the outer peripheral surface of a molding drum,
Affixing the plurality of belt-shaped members to the outer peripheral surface of the molding drum is as follows:
A winding step of winding the belt-shaped member carried out from the belt-shaped member carrying-out device around the outer circumferential surface of the molding drum or the outer surface of the pasted belt-shaped member already pasted on the outer circumferential surface of the molding drum;
Simultaneously with the winding step, the belt-like member wound around the outer peripheral surface of the molding drum or the outer peripheral surface of the already-attached belt-like member already attached to the outer peripheral surface of the molding drum is moved on the outer peripheral surface of the molding drum. It consists of a crimping process that crimps to the pasted belt-like part,
In the crimping step, the pneumatic tire molding method is characterized in that the crimping of the band-shaped member to be crimped is simultaneously performed in the entire crimping width region in the drum axial direction.   2. The pneumatic tire according to claim 1, wherein in the crimping step of the plurality of belt-shaped members, a crimping force at a peripheral portion of each belt-shaped member is higher than a crimping force at a portion other than the peripheral portion of each belt-shaped member. Molding method. A molding drum that is formed in a cylindrical body and is driven to rotate about the center line of the cylindrical body;
A plurality of belt-shaped members constituting the pneumatic tire are successively carried out toward the outer peripheral surface of the molding drum, and the outer peripheral surface of the molding drum, or an already pasted band-shaped member already bonded to the outer peripheral surface of the molding drum A belt-like member unloading device for winding;
The belt-like member wound around the outer peripheral surface of the molding drum that has been unloaded from the belt-like member unloading device and already attached to the outer peripheral surface of the molding drum is wound around the outer periphery of the molding drum. A pneumatic tire molding facility comprising a belt-shaped member crimping device that simultaneously crimps an already-bonded belt-shaped member on a surface during winding. The pressure-bonding roll for the pressure-bonding process used in the band-shaped member pressure bonding apparatus is
Oriented parallel to the rotation center axis of the molding drum,
The pressure-bonding roll is composed of a multiple roller roll (hereinafter referred to as “maco roll”) divided into a plurality of parts in the width direction of the molding drum.
Corresponding to the thickness of each band-shaped member divided into a plurality of parts across the width direction of each of the plurality of band-shaped members, the bottom surface of each macoroll that contacts each width-direction part of each band-shaped member The pneumatic tire molding equipment according to claim 3, wherein the belt-like member is pressure-bonded to the already-attached belt-like member on the outer peripheral surface of the molding drum in a state where the heights are set.   The pressing force control mechanism further includes a pressure-bonding force applied to a peripheral portion of the band-shaped member wound around the outer peripheral surface of the molding drum, or an outer surface of the already-bonded band-shaped member wound around and crimped to the outer peripheral surface of the molding drum. 5. The pneumatic tire molding facility according to claim 4, wherein a crimping force with respect to a peripheral part of another belt-like member different from the crimped belt-like member is set higher than a crimping force other than the peripheral part of the belt-like member.

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