JP6373954B2 - Tire manufacturing apparatus and tire manufacturing method - Google Patents

Description

  The present invention relates to a tire manufacturing apparatus and a tire manufacturing method. Specifically, the present invention relates to a tire manufacturing apparatus and a tire manufacturing method that can improve the productivity of tire manufacturing by continuously and efficiently performing a molding operation of a tire using a sheet-like member.

  For example, as shown in FIG. 4, an automobile tire has two layers of carcass plies 101 a and 101 b in which a plurality of reinforcing cords are arranged in a radial direction between a pair of left and right bead portions 100. Both ends in the tire width direction of the plies 101a and 101b are wound around the bead core 102 from the inside to the outside of the tire. A bead filler 103 is disposed on the outer peripheral side of the bead core 102, and the bead filler 103 is wrapped by carcass plies 101a and 101b.

  In addition, at least two belt layers 105a and 105b in which a plurality of reinforcing cords are covered with a rubber member are provided on the outer peripheral side of the carcass plies 101a and 101b in the tread portion 104, respectively. These belt layers 105a and 105b are disposed such that the reinforcing cords are inclined with respect to the tire circumferential direction and the reinforcing cords cross each other between the belt layers (Patent Document 1).

  Such a tire is molded through a manufacturing process as disclosed in Patent Document 2, for example. That is, as shown in FIG. 5A, after the inner liner rubber 202 is wound around the outer periphery of the cylindrical first molding drum 200 to form a cylindrical shape, both outer portions in the axial direction of the inner liner rubber 202 are formed. A reinforcing rubber 203 having a substantially crescent-shaped cross section is wound around the outer periphery. Then, a carcass ply 204 wider than the inner liner rubber 202 is wound around the inner liner rubber 202, the reinforcing rubber 203, and the outer periphery of the first molding drum 200 to mold a cylindrical band (band molding).

  Next, as shown in FIG. 5 (b), the first molding drum 200 between the folded bladders is bulged outward in the radial direction, and the reinforcing rubber 203, the entire inner liner rubber 202, and the center of the carcass ply 204 in the axial direction. The diameter of the portion is increased, and the bead core 205 is set in close contact with the step located at the boundary between the axially central portion and the axially outer portions of the carcass ply 204.

  Thereafter, the bladder 206 is inflated, the carcass ply 204 axially outside the bead core 205 is folded back around the bead core 205, and tread rubber or sidewall rubber is wound around the outer periphery of the carcass ply 204 to mold the green case 207. (Primary molding).

  Next, as shown in FIG. 6, the green case 207 is taken out from the first molding drum 200 and mounted on the second molding drum 201, and then the green case 207 is brought close to the bead cores 205 to form a substantially toroidal shape. A belt tread band 208 made of a tread rubber and a belt member formed in a cylindrical shape with another band molding drum in advance, and the diameter of the green case 207 is increased. A green tire is molded (secondary molding). Finally, this green tire is carried into a vulcanizer and vulcanized to obtain a pneumatic tire as a final product.

JP 2001-277813 A JP 2003-071950 A

  By the way, in the conventional tire manufacturing apparatus described above, the carcass ply is used in the band molding for molding the band and the primary molding process for molding the green case through the band molding. It is impossible to wind a rubber member such as a tread rubber and a sidewall unless the winding of the molding drum is completed.

  For this reason, when winding a rubber member such as a tread rubber and a sidewall, a waiting time is required until the carcass ply is wound on the molding drum. In particular, in recent tires, the carcass ply has a multi-layer structure, and in that case, in addition to the time required for winding the carcass ply on the first layer, the Since the time required for winding the carcass ply is required, a considerable amount of time is required from the band molding to the primary molding process for molding the green case, resulting in a decrease in tire manufacturing productivity. .

  On the other hand, in order to shorten the molding time, for example, if the molding drum is forcibly rotated at a high speed to increase the winding speed for winding the carcass ply around the molding drum, the carcass ply will be deformed. There is a risk of changing the shape and performance of the tire as the final product.

  The present invention was devised in view of the above points, and tire manufacturing that can improve tire manufacturing productivity by continuously and efficiently performing a molding operation of a tire using a sheet-like member. An object is to provide an apparatus and a tire manufacturing method.

  In order to achieve the above object, a tire manufacturing apparatus according to the present invention includes a support column extending in a vertical axis direction, a horizontal rotation shaft portion attached at a predetermined position in the height direction of the support column, and the horizontal rotation. A rotating jig supported by the shaft, a cylindrical first molding drum disposed on one of the rotating jigs, the axis of which is substantially parallel to the axis of the horizontal rotating shaft, and the rotating jig The first molding drum is disposed on the outer periphery of a rotating orbit drawn by the rotating jig, the second molding drum having a cylindrical shape whose axis is substantially parallel to the axis of the horizontal rotation shaft portion And a sheet-like member supply device for supplying the sheet-like member to the outer peripheral surface of the second molding drum.

  Here, the horizontal rotation shaft portion is attached to a predetermined position in the height direction of the support column extending in the vertical axis direction, so that the rotation control provided with the first molding drum and the second molding drum, which will be described later. The tool can be rotated in the horizontal axis direction. In other words, since the first molding drum and the second molding drum rotate vertically in the vertical axis direction, it is possible to secure a sufficient work space compared to the lateral rotation around the vertical axis, thereby improving the work efficiency. Can do.

  Further, by having the first molding drum and the second molding drum, in the tire molding process, one molding process is assigned to the first molding drum and the other molding process is allocated to the second molding drum. Thus, work efficiency can be increased by proceeding with different work processes at the same time.

  In addition, the arrangement of the cylindrical first molding drum and the second molding drum so that the axes thereof are substantially parallel to the axis of the horizontal rotation shaft portion prevents the entire apparatus from spreading in the rotational circumferential direction. The entire apparatus can be made compact.

  Further, the first molding drum and the second molding are provided by having a rotating jig that is pivotally supported by the horizontal rotation shaft portion and in which the first molding drum is disposed on one side and the second molding drum is disposed on the other side. The drum can be rotated with a predetermined rotation radius, and the first molding drum and the second molding drum can be stopped at arbitrary positions.

  Moreover, by having a sheet-shaped member supply device that supplies a sheet-shaped member to the first molding drum and the second molding drum, the sheet-shaped member supply device changes the first molding drum and the second molding drum. On the other hand, a sheet-like member can be supplied and wound around the outer periphery of the first molding drum and the second molding drum. In addition, while the sheet-shaped part is being supplied to the first molding drum by the sheet-shaped member supply device, the manual operation process by the operator can be advanced at the same time in the second molding drum, so that the work efficiency can be improved. Can be increased.

  In addition, since the sheet-like member supply device is positioned on the outer periphery of the rotation path drawn by the rotating jig, the sheet-like member is efficiently put into the first molding drum without complicating the arrangement of the sheet-like member supply device. , And a second molding drum.

  In addition, when the first molding drum and the second molding drum are arranged in a straight line on the rotating jig with the horizontal rotation shaft portion interposed therebetween, the first molding drum and the second molding drum are predetermined. The positions of the first molding drum and the second molding drum can be reversed by rotating 180 ° from the position. Thus, for example, when different work processes are performed on the first molding drum and the second molding drum, the first operation is performed by a simple work of rotating the rotary jig 180 ° when each work process is completed. The molding drum and the second molding drum can be moved to the next work process.

  Further, the first molding drum and the second molding drum are arranged so that the shaft centers of the respective drums are equidistant from each other with the horizontal rotation shaft portion interposed therebetween, whereby the first molding drum and the second molding drum are arranged. Since the rotation radius of the molding drum can be the same, even when the first molding drum and the second molding drum are reversed from a predetermined position, without changing the arrangement of the peripheral device and the operator, Continuous work is possible, and work efficiency can be improved.

  Further, in the first molding drum and the second molding drum, a line connecting the axis of the first molding drum and the axis of the second molding drum is in a predetermined direction with respect to the vertical axis. When installed at an angle, for example, in the first molding drum and the second molding drum arranged on the lower side in the vertical axis direction, even when manual work by the operator intervenes. The workability can be improved.

  When the sheet-like member supply device has a band member supply device that supplies a band member necessary for band molding and a rubber member supply device that supplies a rubber member wound around the outer periphery of the band member, The band member supplied from the member supply device is wound around the first molding drum, and the rubber member supplied from the rubber member supply device is wound around the second molding drum. Thus, the work of the first molding drum and the second molding drum can be carried out, so that the work efficiency can be improved.

  In addition, when the band member supply device and the rubber member supply device are vertically arranged along the height direction of the support column, the band member supply device and the rubber member supply device are arranged along the rotation direction of the rotating jig. Therefore, the work process positions of the first molding drum and the second molding drum can be changed only by rotating the rotating jig.

  Furthermore, when the work process by the rubber member supply device includes a process that requires manual work by the operator, the rubber member supply device is positioned on the lower side in the vertical axis direction than the band member supply device. Can improve the work efficiency.

  When the band member supply device is an inner rubber supply device that supplies inner rubber and a carcass ply supply device that supplies at least one layer of carcass ply, the first molding drum or the second molding drum An inner rubber and a carcass ply can be wound around the outer periphery of the belt to form a band.

  When the rubber member supply device is a tread rubber supply device that supplies at least tread rubber, the tread rubber can be wound around the outer periphery of the first molding drum or the second molding drum.

  In addition, when the rubber member supply device is arranged on the lower side in the vertical axis direction of the band member supply device, the work from the operator's perspective is performed on each molding drum moved to a position corresponding to the rubber member supply device. Is easy. That is, in the work process in which the rubber member supplied from the rubber member supply device is wound around each molding drum, a plurality of manual work processes are generated by the operator. Therefore, the band member supply device, which is a fully automated work process, is arranged on the upper side in the vertical axis direction, and the rubber member supply device that requires a manual work process by the operator is arranged on the lower side in the vertical axis direction, thereby improving the overall work efficiency. Can be increased.

  In order to achieve the above object, a tire manufacturing method of the present invention includes a cylindrical first molding drum that is pivotally supported by a horizontal rotation shaft portion and whose axis is substantially parallel to the axis of the horizontal rotation shaft portion. On the other hand, a band member necessary for band molding is wound around the outer periphery of the first molding drum of the rotary jig in which the cylindrical second molding drum whose axis is substantially parallel to the axis of the horizontal rotation shaft portion is disposed. A first band member winding step for mounting, a first reversing step for rotating the rotating jig around a horizontal axis, and reversing the positions of the first molding drum and the second molding drum, A second band member winding step of winding a band member necessary for band molding around the outer periphery of the molding drum of No. 2, and a rubber member wound around the outer periphery of the first molding drum on which the band member is wound And then the first green case molding process to mold the green case A first removal step of taking out the green case from the first molding drum; and a second reversal for rotating the rotating jig around a horizontal axis to reverse the positions of the first molding drum and the second molding drum. A second green case molding step of forming a green case by winding a rubber member around an outer periphery of the second molding drum around which the band member is wound, and from the second molding drum to the green case And a second extraction step for extracting.

  Here, a cylindrical first molding drum that is pivotally supported by the horizontal rotation shaft portion, the axis of which is substantially parallel to the axis of the horizontal rotation shaft portion, and the cylinder whose axis is substantially parallel to the axis of the horizontal rotation shaft portion. Since the rotary jig provided with the first molding drum and the second molding drum rotates vertically in the vertical axis direction by having the rotary jig provided with the second molding drum in the shape of the vertical Compared to the horizontal rotation around the shaft, a sufficient work space can be secured, and the work efficiency can be improved.

  In addition, by having a first band member winding step of winding a band member necessary for band molding around the outer periphery of the first molding drum, each member constituting the band is wound around the outer periphery of the first molding drum. Can be disguised.

  Further, the first molding drum and the second molding drum are provided by having a first reversing step of rotating the rotating jig in the horizontal axis direction and reversing the positions of the first molding drum and the second molding drum. By a simple operation of reversing the position of the tire, it is possible to continuously form the tire without waiting time and to improve the work efficiency.

  Further, by having a second band member winding step of winding a band member necessary for band molding around the outer periphery of the second molding drum, the band member constituting the band is wound around the outer periphery of the second molding drum. Can be disguised.

  In addition, the first green case molding step in which the rubber member is wound around the outer periphery of the first molding drum on which the band member is wound to mold the green case is provided. A green case as the primary molding can be molded by winding a rubber member around the outer periphery of the molding drum.

  In addition, by having a first removal step of removing the green case from the first molding drum, a rubber member is wound around the outer periphery of the first molding drum, and the completed green case is taken out, whereby the first molding is performed. The drum can be advanced to the next work step.

  Further, the first molding drum and the second molding drum are provided by having a second reversing step of rotating the rotating jig in the horizontal axis direction and reversing the positions of the first molding drum and the second molding drum. By a simple operation of reversing the position of the tire, it is possible to continuously form the tire without waiting time and to improve the work efficiency.

  In addition, the second green case molding step in which the rubber member is wound around the outer periphery of the second molding drum on which the band member is wound to form the green case is provided. A green case as the primary molding can be molded by winding a rubber member around the outer periphery of the molding drum.

  In addition, by having a second removal step of removing the green case from the second molding drum, a rubber member is wound around the outer periphery of the second molding drum, and the completed green case is taken out, whereby the second molding is performed. The drum can be advanced to the next work step.

  Further, the first band member winding step and the second band member winding step include an inner liner rubber winding step in which an inner liner rubber is wound around the outer periphery of the first molding drum or the second molding drum. And a carcass ply winding step of winding at least one layer of the carcass ply, the band can be formed by winding the inner liner rubber and the carcass ply, respectively.

  The first green case molding step and the second green case molding step include a first molding drum in which a band member is wound, or a bead wire driving step of driving a bead wire around the outer periphery of the second molding drum, and a carcass When the carcass ply folding process for bending both ends of the ply is included, the first green case molding process and the second green case molding process include a manual work process by an operator, thereby relatively long working time. The balance of the process time with the band member winding process can be maintained, and the overall work efficiency can be improved.

  The tire manufacturing apparatus and the tire manufacturing method according to the present invention can improve the productivity of tire manufacturing by continuously and efficiently performing the molding operation of the tire using the sheet-like member. .

1 is a perspective view of a tire manufacturing apparatus according to an embodiment of the present invention. It is a side view of the tire manufacturing apparatus shown in FIG. It is a figure which shows the tire manufacturing process using the tire manufacturing apparatus which concerns on embodiment of this invention. It is a figure which shows a prior art. It is a figure which shows a prior art. It is a figure which shows a prior art.

  Hereinafter, embodiments of the present invention of a tire manufacturing apparatus and a tire manufacturing method will be described with reference to the drawings for understanding of the present invention. For convenience of explanation in each figure, in the state where the tire manufacturing apparatus 1 is installed, the upward direction from the installation surface of the tire manufacturing apparatus 1 is the upward direction, the opposite direction of the upward direction is the downward direction, the upward direction and the downward direction. An axial direction represented is defined as a vertical axis direction, and an axial direction perpendicular to the vertical axis direction is defined as a horizontal axis direction.

  First, the whole structure of the tire manufacturing apparatus 1 which concerns on embodiment of this invention is demonstrated using FIG. 1 and FIG. The tire manufacturing apparatus 1 includes a molding drum 2 as a tire molding machine, a jig 3 that supports the molding drum 2, and a sheet-shaped member supply device 4 that supplies the molding drum 2 with a sheet-shaped member necessary for tire molding. It is mainly composed.

  The molding drum 2 includes a first molding drum 21 and a second molding drum 22 having the same structure. That is, the molding drum 2 has a drum diameter corresponding to a rim diameter of a raw tire (not shown) to be molded, and a drum body 23 having a cylindrical shape that can be expanded or contracted as a whole, And a coating 24 formed on the outer peripheral surface of the drum main body 23.

  A sheet-like member 7 such as an inner rubber 71, a first carcass ply 72, a second carcass ply 73, and a tread rubber 74, which will be described later, which is a green tire molding member, is wound around the coating 24. ing. Further, the surface of the film 24 is composed of, for example, a silicon layer or an adhesive rubber member so that the winding start end of the sheet-like member 7 can be held.

  The jig 3 is a jig that supports the first molding drum 21 and the second molding drum 22, and is fixed to the base 31 and the base 31 that are mainly installed on the installation surface and extends in the vertical axis direction. Supporting column 32, a horizontal rotating shaft portion 33 attached near the upper end of the supporting column 32, and a rotating jig 34 supported by the horizontal rotating shaft portion 33 and supporting the first molding drum 21 and the second molding drum 22. It is composed of

  Here, the horizontal rotation shaft portion 33 is not necessarily attached near the upper end of the support column 32. For example, the column 32 may be attached to a substantially central portion in the height direction, and the attachment position can be changed as appropriate.

  Moreover, it is not always necessary to have the base 31 installed on the installation surface. The support column 32 may be installed directly on the installation surface on which the jig 3 is installed.

  The rotating jig 34 is generally elongated in the horizontal axis direction in a state of being pivotally supported by the horizontal rotating shaft portion 33, and a fitting hole portion 341 that is fitted to the horizontal rotating shaft portion 33 at a substantially central portion thereof. Is formed, and can be rotated in the normal rotation direction and the reverse direction around the horizontal axis with the horizontal rotation shaft portion 33 as a fulcrum by a drive device such as a drive motor (not shown).

  Further, support portions 342 and 342 for supporting the first molding drum 21 and the second molding drum 22 are provided on one end side and the other end side of the rotating jig 34. The first molding drum 21 and the second molding drum 22 are attached to the support portions 342 and 342 so that the axes L1 and L2 thereof are substantially parallel to the axis L3 of the horizontal rotation shaft 33.

  The arrangement relationship between the first molding drum 21 and the second molding drum 22 is such that the distance from the axis of the first molding drum 21 to the axis of the horizontal rotation shaft portion 33 and the axis of the second molding drum 22. The distance from the center to the axis of the horizontal rotation shaft portion 33 is approximately equal, and the axis of the first molding drum 21, the axis of the second molding drum 22, and the axis of the horizontal rotation shaft portion 33. Are arranged so that the line connecting the two is on a straight line.

  Further, the line connecting the axis of the first molding drum 21 and the axis of the second molding drum 22 is relative to the molding drum in which the molding drum located on the upper side is located below the vertical axis direction. Thus, the first molding drum 21 and the second molding drum 22 are arranged so as to be inclined at a predetermined angle toward the sheet-like member supply device 7 side.

  Here, the rotating jig 34 does not necessarily have to be rotated in the normal rotation direction and the reverse direction with the horizontal rotation shaft portion 33 as a fulcrum. For example, the drive device may be controlled so as to allow rotation only in one direction of the normal rotation direction or the reverse rotation direction.

  Further, the axis L1 of the first molding drum 21, the axis L2 of the second molding drum 22, and the axis L3 of the horizontal rotation shaft portion 33 are not necessarily configured to be substantially parallel. However, the tire manufacturing apparatus is configured such that the axis L1 of the first molding drum 21, the axis L2 of the second molding drum 22, and the axis L3 of the horizontal rotation shaft portion 33 are arranged substantially parallel to each other. Therefore, the tire manufacturing apparatus 1 can be made compact.

  In addition, the arrangement relationship between the first molding drum 21 and the second molding drum 22 is not limited to the distance from the axis of the first molding drum 21 to the axis of the horizontal rotation shaft portion 33 and the second molding drum. It is not necessary that the distances from the axis 22 to the axis of the horizontal rotation shaft portion 33 are substantially equal. For example, the distance from the axis of the second molding drum 22 to the axis of the horizontal rotation shaft 33 is longer (shorter) than the distance from the axis of the first molding drum 21 to the axis of the horizontal rotation shaft 33. ) May be set as follows. However, the positional relationship between the first molding drum 21 and the second molding drum 22 is such that the distance from the axis of the first molding drum 21 to the axis of the horizontal rotation shaft portion 33 and the second molding drum 22 Since the distance from the shaft center to the shaft center of the horizontal rotation shaft portion 33 is substantially equal, the first rotation of the rotation jig 34 with the horizontal rotation shaft portion 33 as a fulcrum is performed. Since the rotational radii of the molding drum 21 and the second molding drum 22 can be made the same, even when the first molding drum 21 and the second molding drum 22 are reversed from a predetermined position, the peripheral device, In addition, continuous work can be performed without changing the arrangement of the workers, and work efficiency can be further improved.

  Further, it is not always necessary that the line connecting the axis of the first molding drum 21, the axis of the second molding drum 22, and the axis of the horizontal rotation shaft portion 33 is in a straight line. . For example, you may arrange | position so that the line which connects each axial center may be bent. However, when the axis of the first molding drum 21, the axis of the second molding drum 22, and the axis of the horizontal rotation shaft portion 33 are arranged so as to be in a straight line, the rotation jig 34. The positional relationship between the first molding drum 21 and the second molding drum 22 can be reversed by a simple operation of rotating (reversing) the shaft by 180 ° in the vertical axis direction (vertical direction). Therefore, the drive control of the rotating jig 34 can be simplified.

  Further, the molding drum in which the line connecting the axial center of the first molding drum 21 and the axial center of the second molding drum 22 is located on the upper side with respect to the vertical axis direction is necessarily located on the lower side. However, the first molding drum 21 and the second molding drum 22 do not have to be arranged so as to be inclined at a predetermined angle toward the sheet-like member supply device 7 side. The line connecting the axis of the first molding drum 21 and the axis of the second molding drum 22 may be installed so as to be parallel to the vertical axis direction. However, the line connecting the axis of the first molding drum 21 and the axis of the second molding drum 22 is inclined at a predetermined angle with respect to the vertical axis, for example, in the vertical axis direction lower direction. This makes it easy for the operator to perform manual operations on the molding drum located on the side, and also ensures safety in the manual operation process.

  The sheet-like member supply device 4 includes a band member supply device 5 that supplies a band member as the sheet-like member 7 to the molding drum 2, and a tread rubber supply device 6 that supplies a tread rubber 74 to the molding drum 2. .

  The band member supply device 5 supplies members necessary for band molding to the molding drum 2, specifically, an inner rubber supply device 51 that supplies an inner rubber 71, and a first layer first layer. The first carcass ply supply device 52 that supplies the carcass ply 72 and the second carcass ply supply device 53 that supplies the second carcass ply 73 of the second layer are configured.

  Here, the band member supply device 5 does not necessarily have to include the first carcass ply supply device 52 and the second carcass ply supply device 53. The number can be appropriately increased or decreased depending on the number of stacked carcass plies.

  The band member supply device 5 and the tread rubber supply device 6 are arranged hierarchically in the vertical axis direction, and the second carcass ply supply device 53 and the first carcass ply supply are sequentially arranged from the top of the band member supply device 5. A device 52 and an inner rubber supply device 51 are respectively arranged.

  Further, the tread rubber supply device 6 is disposed at a position spaced downward by a predetermined distance from the inner rubber supply device 51 disposed in the lowermost layer of the band member supply device 5.

  Here, the band member supply device 5 is not necessarily arranged in the order of the second carcass ply supply device 53, the first carcass ply supply device 52, and the inner rubber supply device 51 in order from the top. . These can be appropriately changed in consideration of the manufacturing process in tire molding.

  Further, the tread rubber supply device 6 does not necessarily have to be disposed below the band member supply device 5. For example, you may arrange | position above the band member supply apparatus 5. FIG. However, when the tread rubber 74 is wound around the outer periphery of the molding drum 2 and the molded green case 8 is taken out from the molding drum 2, an operator's manual work may be required. Therefore, it is preferable that the tread rubber supply device 6 is disposed below the band member supply device 5.

  In the inner rubber supply device 51, an inner rubber 71 is wound around a shaft 511, and a roller 512 around which the inner rubber 71 is wound is disposed above the shaft 511. An inner rubber conveyance conveyor 513 capable of conveying the inner rubber 71 to the molding drum 2 is provided on the molding drum 2 side of the inner rubber supply device 51.

  As with the inner rubber supply device 51, the first carcass ply supply device 52 and the second carcass ply supply device 53 have the first carcass ply 72 and the second carcass ply 73 as the shaft 521. 531, and rollers 522 and 532 around which the first carcass ply 72 and the second carcass ply 73 are wound are arranged above the shafts 521 and 531.

  The first carcass ply 72 and the second carcass ply 73 can be conveyed to the molding drum 2 on the molding drum 2 side of the first carcass ply supply device 52 and the second carcass ply supply device 53. A first carcass ply transfer conveyor 523 and a second carcass ply transfer conveyor 533 are provided.

  In the tread rubber supply device 6, a tread rubber 74 is wound around a shaft 61, and a roller 62 around which the tread rubber supply device 6 is wound is disposed above the shaft 61. A tread rubber conveyance conveyor 63 that can convey the tread rubber 74 to the molding drum 2 is provided on the molding drum 2 side of the tread rubber supply device 6.

  The inner rubber conveyor 513, the first carcass ply conveyor 523, the second carcass ply conveyor 533, and the tread rubber conveyor 63 are so-called belt conveyors, which are driven by a servo motor (not shown), etc. The vicinity of the tip of the molding drum 2 side can be swung up and down by a hydraulic cylinder (not shown), for example, and can be moved close to and away from the molding drum 2.

  The inner rubber transfer conveyor 513, the first carcass ply transfer conveyor 523, the second carcass ply transfer conveyor 533, and the tread rubber transfer conveyor 63 are located below the first molding drum 21 and the second molding drum 22. The sheet-like member is supplied by entering the side (lower surface).

  Here, the inner rubber transport conveyor 513, the first carcass ply transport conveyor 523, the second carcass ply transport conveyor 533, and the tread rubber transport conveyor 63 are not necessarily the first molding drum 21 and the second molding drum 22. It is not necessary to enter the lower side (lower surface) of the sheet and supply the sheet-like member. For example, each conveyance conveyor may enter the upper side (upper surface) of each molding drum, and the sheet-like member 7 may be supplied. However, the clearance between the sheet-shaped member supply device 4 and each molding drum can be minimized by the fact that each conveyance conveyor enters the lower side (lower surface) of each molding drum.

  Next, based on FIG. 3, the manufacturing method of the tire using these tire manufacturing apparatuses 1 is demonstrated. In the figure, “1” indicates the first molding drum 21 and “2” indicates the second molding drum 22.

  First, as shown in FIG. 3A, the tire manufacturing apparatus 1 includes a first molding drum 21 disposed on the upper side and a second molding drum 22 disposed on the lower side, and the shaft of the first molding drum 21. The tire is manufactured by setting the straight line connecting the core and the axis of the second molding drum 22 as the initial state when the first molding drum 21 is inclined to the sheet-like member supply device 7 side with respect to the vertical axis. Production of a tire by the apparatus 1 is started.

  Here, the arrangement state in which the first molding drum 21 is on the upper side and the second molding drum 22 is on the lower side does not necessarily have to be the initial state at the start of manufacture. A state where the first molding drum 21 is disposed on the lower side and the second molding drum 22 is disposed on the upper side may be set as an initial state of manufacturing start. In the embodiment of the present invention, for convenience of explanation, an arrangement state in which the first molding drum 21 is on the upper side and the second molding drum 22 is on the lower side is an initial state at which the tire manufacturing apparatus 1 starts manufacturing.

  From the state of FIG. 3A, as shown in FIG. 3B, the sheet-like member 7 constituting the band member is supplied from the band member supply device 5 to the first molding drum 21, and the first Is wound around the outer periphery of the molding drum 21 (band molding).

  Specifically, first, the inner rubber 71 is wound around the outer periphery of the first molding drum 21 through the inner rubber conveyor 513 from the inner rubber supply device 51. Subsequently, from the first carcass ply supply device 52, the first carcass ply 72 of the first layer passes through the first carcass ply transport conveyor 523 and the first molding drum 21 on which the inner rubber 71 is wound is wound. It is wound around the outer periphery. Further, from the second carcass ply supply device 53, the second carcass ply 73 of the second layer is wound around the first carcass ply 72 of the first layer through the second carcass ply transport conveyor 533. It is wound around the outer periphery of the first molding drum 21.

  Winding of a sheet-like member 7 (inner rubber 71, first layer first carcass ply 72, second layer second carcass ply 73) constituting a band member around the outer periphery of the first molding drum 21 Is completed, the bead is set, and as shown in FIG. 3C, the rotating jig 34 is rotated forward by 180 ° with the horizontal rotating shaft portion 33 as a fulcrum, and the first molding drum 21 and the second molding are performed. The position of the drum 22 is reversed.

  In a state where the first molding drum 21 and the second molding drum 22 are reversed, as shown in FIG. 3D, the band member is supplied from the band member supply device 5 to the second molding drum 22. The constituent sheet-like member 7 is supplied and wound around the outer periphery of the second molding drum 22 (band molding).

  Specifically, in the same manner as the band member winding process for the first molding drum 21 described above, the inner rubber 71 is first transferred from the inner rubber supply device 51 to the inner rubber conveyor 513 for the second molding drum 22. Is wound around the outer periphery of the second molding drum 22. Subsequently, from the first carcass ply supply device 52, the first carcass ply 72 of the first layer passes through the first carcass ply transport conveyor 523, and the second molding drum 22 around which the inner rubber 71 is wound. It is wound around the outer periphery. Further, the second molding drum 22 in which the second carcass ply 73 is wound around the second carcass ply supply device 53 through the second carcass ply transport conveyor 533 from the second carcass ply supply device 53. Wound around the outer periphery of the

  On the other hand, for the first molding drum 21 on which the band member is wound, the tread rubber 74 is supplied from the tread rubber supply device 6 and wound around the outer periphery of the first molding drum 21, so that the primary molding is performed. The green case 8 is completed and taken out from the first molding drum 21.

  The carcass wound around the outer periphery of the first molding drum 21 before the tread rubber 74 is wound around the outer periphery of the first molding drum 21 with the first molding drum 21 positioned on the lower side. A step of winding an annular bead wire (not shown) and a step of bending both ends of the first carcass ply 72 and the second carcass ply 73 may be provided on the outer peripheral surfaces of both ends in the width direction of the plies 72 and 73, respectively. .

  When the green case 8 is removed from the first molding drum 21, the rotating jig 34 is subsequently rotated by 180 ° as shown in FIG. 3E, and the positions of the first molding drum 21 and the second molding drum 22 are detected. Is reversed.

  For the inverted first molding drum 21, as shown in FIG. 3 (f), the sheet-like member 7 constituting the band member is supplied again from the band member supply device 5, and the process for band molding is performed. Be started. On the other hand, the tread rubber 74 is supplied from the tread rubber supply device 6 to the second molding drum 22 for which the band molding has been completed, and is wound around the outer periphery of the second molding drum 22, so that the green case 8 as the primary molding. Is completed and taken out from the second molding drum 22.

  By repeating the above steps, it is possible to carry out continuously in a short time from the band molding to the molding of the green case 8 as the primary molding.

  As described above, in the tire manufacturing apparatus and the tire manufacturing method according to the present invention, the tire manufacturing productivity can be improved by continuously and efficiently performing the molding operation of the tire using the sheet-like member. It has become.

DESCRIPTION OF SYMBOLS 1 Tire manufacturing apparatus 2 Molding drum 21 1st molding drum 22 2nd molding drum 23 Drum main body 24 Film | membrane 3 Jig | tool 31 Base 32 Support | pillar 33 Horizontal rotating shaft part 34 Rotating jig 341 Fitting hole part 342 Support part 4 Sheet-like member supply device 5 Band member supply device 51 Inner rubber supply device 511 Shaft 512 roller 513 Inner rubber transport conveyor 52 First carcass ply supply device 521 Shaft 522 Roller 523 First carcass ply transport conveyor 53 Second carcass ply Supply device 531 Shaft 532 Roller 533 Second carcass ply transport conveyor 6 Tread rubber supply device 61 Shaft 62 Roller 63 Tread rubber transport conveyor 7 Sheet-like member 71 Inner rubber 72 First carcass ply 73 Second carcass ply 74 Reddogomu 8 green case L1, L2, L3 axis

Claims (2)

A support column extending in the vertical axis direction, a horizontal rotation shaft portion attached at a predetermined position in the height direction of the support column, a rotation jig supported by the horizontal rotation shaft portion, and a rotation jig A pair of cylindrical forming drums arranged at both ends and whose axis is substantially parallel to the axis of the horizontal rotation shaft portion, and the outer periphery of a rotating track drawn by the rotating jig, and a sheet on the outer peripheral surface of the forming drum In a tire manufacturing apparatus comprising a sheet-like member supply device that supplies a member-like member ,
The horizontal rotating shaft portion pivotally supports the rotating jig so that the molding drum can be reversed to a first molding position on the vertically upper side and a second molding position on the vertically lower side,
The sheet-like member supply device includes a band member supply device that supplies a band member to the molding drum on one side of the first molding position, and a rubber that supplies a rubber member to the molding drum on the other side of the second molding position. A tire manufacturing apparatus in which member supply devices are arranged in tandem along the height direction of the columns . A cylindrical first molding drum that is pivotally supported by the horizontal rotation shaft portion, one side of which is substantially parallel to the axis of the horizontal rotation shaft portion, and the other is that the axis is substantially parallel to the axis of the horizontal rotation shaft portion; In addition, a band member necessary for band molding is wound around the outer periphery of the first molding drum of a rotary jig in which a cylindrical second molding drum positioned vertically below the first molding drum is disposed. A first band member winding step to be worn;
A first reversing step of rotating the rotating jig around a horizontal axis and reversing the positions of the first molding drum and the second molding drum;
A second band member winding step of winding a band member necessary for band molding around the outer periphery of the second molding drum;
Simultaneously with the second band member winding step, a first green case molding step of molding a green case by winding a rubber member around the outer periphery of the first molding drum on which the band member is wound,
A first removal step of removing the green case from the first molding drum;
A second reversing step of rotating the rotating jig around a horizontal axis and reversing the positions of the first molding drum and the second molding drum;
A second green case molding step of molding a green case by winding a rubber member around an outer periphery of the second molding drum on which the band member is wound;
A second removal step of removing the green case from the second molding drum.
Tire manufacturing method.

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