JP4803358B2 - Tire molding equipment - Google Patents

Description

  The present invention relates to a tire molding device used for manufacturing a radial tire for a passenger car, for example.

  Generally, this type of tire forming apparatus is supplied from a band drum that forms a cylindrical band member by winding a sheet-like member such as an inner liner or a carcass supplied from a predetermined member supplying apparatus, and from another member supplying apparatus. A belt drum for forming a cylindrical belt member by winding a sheet-like member such as a belt and a tread, a band gripper for gripping a band member formed by the band drum, and a cylindrical shape by the belt drum A belt gripping machine that grips the belt member, a band member, and a shaping drum that forms the belt member into a tire shape are provided, and the band forming step, the belt forming step, and the shaping step are performed simultaneously.

  In the tire molding apparatus, if each process is completed almost simultaneously, production efficiency can be improved. However, as the number of types of belt members increases, for example, the number of belt members increases. An imbalance occurs in the cycle time between processes, and the overall production efficiency is lowered.

  In order to solve this problem, it is known that the belt molding process is performed by a pair of belt drums to shorten the cycle time of the belt molding process (see, for example, Patent Document 1). In this case, the cycle time of the band forming step and the shaping step becomes longer than that of the belt forming step, and eventually there is a problem that the production efficiency cannot be sufficiently improved.

  Therefore, a band molding machine having a pair of band drums, a belt molding machine having a pair of belt drums, and a shaping molding machine having a pair of shaping drums are provided, and each step is performed by two drums. What was made is known (for example, refer patent document 2).

That is, in this tire molding apparatus, during the first band molding process in which a part of the band member is wound around one band drum, on the part of the member wound around the other band drum. A second band forming process for winding other members is performed, and after these processes are completed, the positions of the band drums are switched with each other by rotating the band drums around the main body of the molding machine. In addition, during the first belt forming process in which a part of the belt member is wound around one belt drum, the other member is wound on the part of the member wound around the other belt drum. After performing these belt forming steps 2 and completing these steps, the respective belt drums are rotated around the main body of the molding machine so that the positions thereof are interchanged. Furthermore, while performing the first shaping step of assembling the band member to the belt member on one shaping drum, the second shaping step of forming the band member and belt member of the other shaping drum with a stitcher is performed, After these steps are completed, the respective shaping drums are rotated around the molding machine main body so that the positions are interchanged.
JP-A-6-31831 Special table 2001-500466 gazette

  By the way, the first shaping step is a step of forming the unvulcanized tire by expanding the band member in the radial direction and press-bonding the band member to the inner peripheral surface of the belt member. On the other hand, the second shaping step is a step of pressing the surface of the unvulcanized tire with a stitcher while rotating the unvulcanized tire, but it is necessary to uniformly press the surface of the unvulcanized tire with the stitcher in order to improve the quality. Therefore, it takes a longer time than the first shaping step. For this reason, in the case where each shaping drum is replaced at the same time as in the tire molding device, one shaping drum that has finished the first shaping step waits until the second shaping step of the other shaping drum is finished. As a result, the entire cycle time cannot be shortened by the waiting time.

  The present invention has been made in view of the above problems, and its object is to perform a part of the shaping process with one shaping drum and the other shaping process with the other shaping drum. Even if it is a case, it is providing the tire shaping | molding apparatus which does not produce useless waiting time in one of each shaping drum.

  To achieve the above object, the present invention provides a band drum for forming a cylindrical band member disposed on the inner peripheral side of a tire, a belt drum for forming a belt member disposed on the outer peripheral side of a tire, and a band A band gripper for gripping the band member formed by the drum, a belt gripper for gripping the belt member formed by the belt drum, and a pair of shaping drums for forming the band member and the belt member into a tire shape, A tire forming apparatus in which a first shaping step for assembling the band member to the belt member on the shaping drum and a second shaping step for forming the band member and the belt member of the shaping drum with a stitcher are performed by each shaping drum. 1 having each of the shaping drums. The shaping machine is provided such that one shaping machine is movably provided at a predetermined position where the first shaping process is performed and a predetermined position where the second shaping process is performed, and the other shaping machine is provided. Each of the predetermined positions for performing one shaping process and the other predetermined positions for performing the second shaping process are movably provided.

  Thereby, one shaping machine can be moved independently from a predetermined position for performing the first shaping step to a predetermined position for performing the second shaping step, and the other shaping machine can be moved to the first shaping step. Can be moved independently from the predetermined position for performing the second shaping step to the other predetermined position for performing the second shaping step. For example, when the shaping step by one shaping molding machine is completed, the second by the other shaping molding device is performed. Even when the shaping process is not completed, it is possible to move one shaping machine that has completed the first shaping process to a position for performing the second shaping process.

  According to the present invention, for example, even when the second shaping process by the other shaping machine is not finished at the time when the shaping process by one shaping machine is finished, the one shaping that has finished the first shaping process. The molding machine can be moved to a position for performing the second shaping step. As a result, unnecessary waiting time does not occur in one of the shaping machines, so that overall cycle time can be shortened and productivity can be improved.

  1 to 9 show an embodiment of the present invention. FIG. 1 is a plan view of a tire forming apparatus, FIGS. 2 to 7 are plan views showing the operation thereof, and FIG. 8 shows an operation of the tire forming apparatus. FIG. 9 is a time chart showing the operation of the comparative example.

  This tire molding apparatus includes a band molding machine 10 that molds a cylindrical band member A disposed on the inner peripheral side of a tire, and a belt molding machine that molds a cylindrical belt member B disposed on the outer peripheral side of the tire. 20, a band gripping machine 30 that grips the band member A molded by the band drum 11 of the band molding machine 10, and a belt gripping machine 40 that grips the belt member B molded by the belt drum 21 of the belt molding machine 20. , A pair of shaping machines 50 that form the band member A and the belt member B into a tire shape, a pair of first pushers 60 and a pair of second pushers 70 that fold the bead portion of the band member A on the shaping drum 51. And a pair of stitchers 80 that press the surfaces of the band member A and the belt member B formed into a tire shape by the shaping drum 51. And a tire unloading apparatus 90 for unloading the finished green tire C which is molded in the shaping forming machine 50 from the shaping drum 51 to another position.

  The band molding machine 10 has a known configuration in which a sheet-like rubber member is wound around a band drum 11 and molded into a cylindrical shape, and a pair of band drums 11 arranged coaxially with each other are disposed on both ends of the molding machine main body 12. I have. Each band drum 11 is supported by a pair of rotating shafts extending from the molding machine main body 12, and is rotated by a motor (not shown). The respective band drums 11 are arranged on a predetermined axis X1, and the positions thereof are interchanged on the axis X1 by the rotation of the molding machine body 12. That is, the molding machine main body 12 is provided to be rotatable about an axis orthogonal to the axis of each band drum 11 by the rotation drive unit 13 so that each band drum 11 rotates on a vertical plane including the axis X1. It has become. On one side of the band drum 11 located on one side of the band forming machine 10 in the axial direction (opposite to the shaping drum 51), a transfer drum 14 for supplying a sheet-like member such as an inner liner and a carcass to the band drum 11 and a plurality of drums The trays 15 are provided, and each tray 15 is loaded with a sheet-like member cut in advance to a predetermined length. That is, the trays 15 are arranged in a direction perpendicular to the axis of the band drum 11, and after the sheet-like members of the trays 15 are sequentially wound around the transfer drum 14 moving toward the band drum 11, the sheet-like members are The transfer drum 14 is wound around the band drum 11. Further, a first member for supplying sheet-like members such as sidewalls and rim cushions to the band drum 11 on one side of the band drum 11 located on the other axial side (the shaping drum 51 side) of the band forming machine 10. A supply conveyor 16 is provided.

Each belt molding machine 20 has a known configuration in which a sheet-like rubber member is wound around a belt drum 21 and molded into a cylindrical shape, and one belt drum 21 is provided on each end of the molding machine main body 22. The belt drum 21 is supported by a rotating shaft extending from the molding machine main body 22 and is rotated by a motor (not shown). The belt drum 21 of each belt molding machine 20 is disposed on two axes X2 and X3 parallel to the axis X1, and moves along the axes X2 and X3 together with the molding machine main body 22 by the moving mechanism 23, respectively. Yes. Further, the positions of the belt drums 21 on the axes X2 and X3 are interchanged with each other by the rotation of the molding machine body 22. That is, each molding machine main body 22 is provided so as to be rotatable about an axis orthogonal to the axis of each belt drum 21 by a rotation drive unit (not shown), and each belt drum 11 rotates on a plane. . A second member supply conveyor 24 that supplies a sheet-like member such as a belt to the belt drum 21 is provided on one side of the one belt drum 21. Further, on one side of the other belt drum 21, a third member supply conveyor 25 that supplies a sheet-like member such as a belt cover to the belt drum 21 and a sheet-like member such as a tread to the belt drum 21 are supplied. A fourth member supply conveyor 26 is provided.

  The band gripping machine 30 has a known configuration in which the outer peripheral surface of the band member A is gripped in the radial direction by a plurality of gripping members, and is disposed on the same axis X1 as the band drum 11. In this case, the band gripper 30 is provided so as to be movable on the axis X1 by the moving mechanism 31, and can be moved to the band drum 11 and the shaping drum 51, respectively.

  The belt gripping machine 40 has a known configuration in which the outer peripheral surface of the belt member B is gripped in the radial direction by a plurality of gripping members, and is perpendicular to the axes X1 and X2 by the moving mechanism 41 between the axis X1 and the axis X2. In addition to being provided so as to be movable in the direction, it is provided so as to be movable on the axis X1.

  Each shaping molding machine 50 has a well-known configuration in which the band member A is expanded in the radial direction and assembled to the inner peripheral surface side of the belt member B to form a tire shape. One end is provided on each end. The shaping drum 51 is supported by a rotating shaft extending from the molding machine main body 52 and is rotated by a motor (not shown). Further, each molding machine main body 52 is provided so as to be independently movable in a direction orthogonal to the axis X1 by the moving mechanism 53, and one shaping molding machine 50 reciprocates in the width direction from the axis X1 and the other shaping. The molding machine 50 reciprocates from the axis X1 to the other in the width direction.

  Each of the first pushers 60 has a well-known configuration in which a ring-shaped member through which the band member A can be inserted is pressed against the band member A of the shaping drum 51 from one end side in the axial direction through a bladder (not shown). The machine 50 is provided at a position where the machine moves from the axis X1 to one side in the width direction, and the other shaping machine 50 is provided at a position where the machine 50 moves from the axis X1 to the other side in the width direction. Each first pusher 60 is provided so as to be movable in the axial direction of the shaping drum 51 by a moving mechanism 61.

  Each of the second pushers 70 has a known configuration in which a ring-shaped member that can be inserted through the band member A is pressed against the band member A of the shaping drum 51 from the other end side in the axial direction via a bladder (not shown). The mechanism is provided so as to be movable in the axial direction of the shaping drum 51.

  Each stitcher 80 has a known configuration in which a roller (not shown) is pressed against the surfaces of the band member A and the belt member B rotated by the shaping drum 51, and one of the shaping machines 50 is moved from the axis X1 to one side in the width direction. The other shaping machine 50 is provided at a position moved from the axis X1 to the other in the width direction.

  The tire unloader 90 has a known configuration in which the outer peripheral surface of the finished green tire C is gripped by a pair of gripping members (not shown), and is provided so as to be movable in a direction perpendicular to the axis X1 by a moving mechanism (not shown). It is provided to be movable on the top.

  In the tire forming apparatus configured as described above, a sheet-like member is wound around one band drum 11 of the band forming machine 10 by the transfer drum 14 (first band forming step), and the other band drum 11 is wound around the other band drum 11. A sheet-like member is wound from the first member supply conveyor 16 (second band forming step). At this time, a sheet-like member is already wound around the other band drum 11 by the transfer drum 14, and the band member A is formed by the other band drum 11. That is, when the first band forming process is performed with one band drum 11, the second band forming process is performed with the other band drum 11, and the second band forming process is performed with one band drum 11. When performing, the first band forming step is performed on the other band drum 11.

In addition, a sheet-like member is wound around the belt drum 21 of one belt forming machine 20 from the second member supply conveyor 24 (first belt forming step), and the belt drum 21 of the other belt forming machine 20 is The sheet-shaped member is wound from the third member supply conveyor 25, the other belt forming machine 20 moves to the fourth member supply conveyor 26 side, and the sheet-shaped member is transferred from the fourth member supply device 26 to the belt drum 21. Wrapped (second belt forming step). At this time, a sheet-like member is already wound around the belt drum 21 of the other belt forming machine 20 from the third member supply conveyor 24, and the belt member B is formed by the other belt drum 21. That is, when the first belt forming process is performed with one belt drum 21, the second belt forming process is performed with the other belt drum 21, and the second belt forming process is performed with one belt drum 21. When it is performed, the first belt forming step is performed on the other belt drum 21.

  Next, after the band gripping machine 30 moves to the other band drum 11 as shown in FIG. 2 and the band member A of the band drum 11 is gripped by the band gripping machine 30, the band gripping machine as shown in FIG. As 30 moves to the shaping drum 51 on the axis X1, the band forming machine 10 rotates and the position of each band drum 11 is switched. Next, after the band member A is moved from the band gripper 40 to the shaping drum 51, the band gripper 30 returns to the band forming machine 10 side as shown in FIG.

  Further, as shown in FIG. 2, each belt forming machine 20 rotates to change the position of each belt forming machine 20, and then the belt forming machine 20 moves to a belt gripping machine 40 waiting on the axis X2 of the belt drum 21. After the belt member B of the belt drum 21 is gripped by the belt gripper 40, the belt forming machine 20 returns to the original position as shown in FIG. After that, as shown in FIG. 4, the belt gripper 40 that grips the belt member B moves on the axis X1 and also moves to one shaping drum 51 on the axis X1.

  Further, as shown in FIG. 5, a sheet-like member is wound around the belt drum 21 of one belt forming machine 20 from the second member supply conveyor 24 (first belt forming step), and the other belt forming machine 20 A sheet-like member is wound around the belt drum 21 from the third member supply conveyor 25, and the other belt forming machine 20 moves to the fourth member supply conveyor 26 side. A sheet-like member is wound from 26 (second belt forming step). At this time, a sheet-like member is already wound around the belt drum 21 of the other belt forming machine 20 from the third member supply conveyor 24, and the belt member B is formed by the other belt drum 21.

  Next, in one shaping molding machine 50, after the band member A is radially expanded by the shaping drum 51 and assembled to the inner peripheral surface of the belt member B (first shaping step), as shown in FIG. One shaping molding machine 50 moves to one stitcher 80 side. Further, in the other shaping molding machine 50, the band member A and the belt member B are already molded into a tire shape, and the first pusher 60 and the second pusher 70 move to the shaping drum 51 side, and each pusher. By 60 and 70, the bead part of the band member A is folded back to the side wall side. Subsequently, after the band member A and the belt member B of the other shaping drum 51 are formed by the stitcher 80 (second shaping step), the other shaping machine 50 moves on the axis X1 as shown in FIG. To do. That is, when the first shaping process is performed with one shaping drum 51, the second shaping process is performed with the other shaping drum 51, and the second shaping process is performed with one shaping drum 51. In some cases, the first shaping drum 51 performs the first shaping step.

  Thereafter, as shown in FIG. 7, the tire unloader 90 moves to the other shaping machine 50 moved on the axis X1, and the completed green tire C of the shaping drum 51 is gripped by the tire unloader 90, and the completed green The tire C is conveyed to a predetermined position in the subsequent process.

  Here, the operation of each shaping machine 50 in the shaping step will be described with reference to the time chart of FIG. The numbers given for each operation block in the figure are the ratios corresponding to the time required for each operation when the cycle time of the shaping process is “100”, and are shown in parentheses in the following description.

  That is, one shaping machine 50 performs the first shaping process on the axis X1 (24), and when the first shaping process is completed, it moves to one stitcher 80 (5) and the second shaping process. A process is performed (50). When the second shaping step is completed, it moves on the axis X1 (5), and the finished green tire C is taken out from one shaping machine 50 by the tire unloader 90 (16). Thus, the shaping process by one shaping machine 50 is completed.

  Similarly, the other shaping machine 50 performs the first shaping process on the axis X1 while the one shaping machine 50 is performing the second shaping process (24). When the process is completed, the process moves to the other stitcher 80 (5), and the second shaping process is performed (50). When the second shaping step is completed, it moves on the axis X1 (5), and the finished green tire C is taken out from one shaping machine 50 by the tire unloader 90 (16). Thus, the shaping process by the other shaping machine 50 is completed.

  Next, a comparative example in which a pair of shaping drums are simultaneously replaced as in the conventional example will be described with reference to the time chart of FIG. In addition, the number attached | subjected for every operation | movement block in the same figure is a ratio corresponding to the required time of each operation | movement when the cycle time of the shaping process in embodiment (FIG. 8) of this invention is set to "100", In the following description, it is shown in parentheses.

  That is, one shaping drum performs the first shaping process (24) and waits until the second shaping process by the other shaping drum is completed (10) when the first shaping process is completed. And after the 2nd shaping process by the other shaping drum is complete | finished, it moves simultaneously with the other shaping drum (5), and performs a 2nd shaping process (50). When the second shaping step is completed, the second shaping step moves simultaneously with the other shaping drum (5), and the finished green tire is taken out (16). Thus, the shaping process using one of the shaping drums is completed.

  Similarly, the other shaping drum performs the first shaping step while the one shaping drum is performing the second shaping step (24), and when the first shaping step is completed, Wait until the second shaping process by the drum is completed (10). And after the 2nd shaping process by one shaping drum is complete | finished, it moves simultaneously with one shaping drum (5), and performs a 2nd shaping process (50). When the second shaping step is completed, it moves simultaneously with one shaping drum (5), and the finished green tire is taken out (16). Thus, the shaping process using the other shaping drum is completed.

  According to the comparative example, since the waiting time (10) of the shaping drum is generated, the cycle time of the shaping process is “110”, which is longer by “10” than the embodiment of the present invention.

  As described above, according to the tire molding apparatus of the present embodiment, the pair of shaping molding machines 50 each having the shaping drum 51 are provided, and one shaping molding machine 50 has a predetermined position where the first shaping process is performed and the second position. Each of the shaping machines 50 is provided at a predetermined position for performing the first shaping step and another predetermined position for performing the second shaping step. Since it is provided so as to be movable alone, even if the second shaping process is not completed at the time when the first shaping process is completed, one shaping molding machine 50 that has completed the first shaping process is immediately connected to the second shaping machine 50. It can move to the position which performs the shaping process of this. As a result, unnecessary waiting time does not occur in the shaping process by each shaping machine 50, so that the overall cycle time can be shortened and productivity can be improved.

  Also, a first band forming step of winding a part of the band member A around the band drum 11 and a second part of winding another member of the band member A on the part of the member wound around the band drum 11. Since the band forming process is performed by the pair of band drums 11, the second band forming process is performed by the other band drum 11 while the first band drum 11 is performing the first band forming process. This can shorten the cycle time of the band forming process.

  Further, a first belt forming step of winding a part of the belt member B around the belt drum 21 and a second part of winding the other member of the belt member B on the part of the member wound around the belt drum 21. Since the belt forming step is performed by the pair of belt drums 21, the second belt forming step is performed by the other belt drum 21 while the first belt forming step is performed by one belt drum 21. And the cycle time of the belt forming process can be shortened.

  In addition, since a plurality of trays 15 on which the sheet-like members wound around the band drum 11 are placed and a transfer drum 14 around which the members placed on the respective trays 15 are wound around the band drum 11 are provided. Even when a tire is manufactured, a sheet-like member that has been cut in advance according to the type of tire can be placed on each tray 15, which is extremely advantageous for high-mix low-volume production.

The top view of the tire forming device which shows one Embodiment of this invention Plan view showing operation of tire molding apparatus Plan view showing operation of tire molding apparatus Plan view showing operation of tire molding apparatus Plan view showing operation of tire molding apparatus Plan view showing operation of tire molding apparatus Plan view showing operation of tire molding apparatus Time chart showing operation of tire molding equipment Time chart showing operation of comparative example

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Band molding machine, 11 ... Band drum, 20 ... Belt molding machine, 21 ... Belt drum, 30 ... Band gripping machine, 40 ... Belt gripping machine, 50 ... Shaping molding machine, 51 ... Shaping drum, 80 ... Stitcher, A ... band member, B ... belt member.

Claims (4)

A band drum for forming a cylindrical band member arranged on the inner peripheral side of the tire, a belt drum for forming a belt member arranged on the outer peripheral side of the tire, and a band for gripping the band member formed by the band drum A gripping machine, a belt gripping machine that grips a belt member formed by a belt drum, and a pair of shaping drums that form the band member and the belt member into a tire shape, and the band member is assembled to the belt member on the shaping drum. In the tire shaping apparatus in which the first shaping step and the second shaping step of shaping the band member and belt member of the shaping drum with a stitcher are performed by each shaping drum,
A pair of shaping machines each having the respective shaping drums;
One shaping molding machine is provided so as to be independently movable to a predetermined position for performing the first shaping step and a predetermined position for performing the second shaping step,
A tire shaping apparatus, wherein the other shaping machine is movably provided at the predetermined position where the first shaping process is performed and the other predetermined position where the second shaping process is performed. A pair of bands includes a first band forming step of winding a part of the band member around the band drum and a second band forming step of winding another member on the part of the member wound around the band drum. The tire forming apparatus according to claim 1, wherein each of the tire forming apparatuses is configured to be performed by a drum. A pair of belts includes a first belt forming step of winding a part of the belt member around the belt drum and a second belt forming step of winding another member on the part of the member wound around the belt drum. The tire forming apparatus according to claim 1, wherein each of the tire forming apparatuses is configured to be performed by a drum. At least one tray for placing a member wound around the band drum;
The tire molding apparatus according to claim 1, 2 or 3, further comprising: a transfer drum that winds the member placed on the tray and winds the member around the band drum.

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