JP4763499B2 - Tire conveyor - Google Patents

Description

  The present invention relates to a tire conveying device that conveys a tire in a vertical direction and a horizontal direction.

  The tire holding part in the conventional tire conveyance device has a plurality of metal chucks arranged radially in a plan view.

As an example, in the loader (tire holding portion) 1 disclosed in Patent Document 1, the plurality of chucks 2 move in the radial direction in conjunction with the expansion / contraction operation of the expansion / contraction cylinder 6. A raw tire is obtained by hooking a claw portion extending outward in the radial direction from a radially inner side to a bead portion of a raw tire (not shown), and further moving the chuck 2 radially outward to press the raw tire from the radial inner side. Is held by the loader 1. Thus, the raw tire is carried in the tire vulcanizer by moving the loader 1 holding the raw tire in the vertical direction and the horizontal direction by the moving mechanism.
JP-A-8-90560

  However, the technique of Patent Document 1 requires a plurality of chucks, a telescopic cylinder and a link device that move these chucks in the radial direction, and the like. Therefore, the tire holding part becomes complicated and large, and the manufacturing cost of the tire conveying device is high, and the weight of the tire holding part is large.

  Accordingly, an object of the present invention is to provide a lightweight tire transport device that has a simple structure and is low in manufacturing cost.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, a tire conveyance device of the present invention is a tire conveyance device that holds and conveys a tire, and is provided at a main body portion having a circular outer periphery and at one end of the main body portion. A holding plate for holding the tire having a plate portion that is larger in the radial direction than the main body, a moving mechanism for moving the holding plate in the transport direction, and an attached and added to the outer peripheral surface of the main body. An expansion holding member that expands when a pressure medium is supplied to the inside, and the tire is pressed against the holding plate by the peripheral edge of the tire opening being pressed from the inside in the radial direction by the expansion of the expansion holding member. held, the plate part, that provided in contact from the tire outer side with respect to the bead portion of the tire.

According to this configuration, since the tire is held by the expansion of the expansion holding member, it is possible to obtain a low-cost and lightweight tire transfer device with a simple configuration compared to a tire transfer device using a plurality of chucks. Further, the tire is more reliably held by the holding plate.

  The expansion holding member may be formed in an annular shape and contact with the peripheral edge portion on the entire circumference. According to this, the structure of the expansion holding member can be simplified. Furthermore, since the expansion holding member expands over the entire circumference, the tire can be centered with respect to the holding plate.

  When the tire is not attached, the outer diameter of the inflation holding member is smaller than the inner diameter of the peripheral edge when no pressurized medium is supplied to the inside of the inflation holding member, and the inside of the inflation holding member When the pressurizing medium is supplied, the inner diameter of the peripheral edge may be larger. According to this, since the contact area between the expansion holding member and the tire can be increased, the tire can be held more reliably.

  Moreover, the tire conveying apparatus of this invention can also be used in the conveyance process of a raw tire or a vulcanized tire.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  Here, an embodiment will be described in which the tire conveyance device according to the present invention is used in a process of supplying a raw tire to a tire vulcanizer.

  First, the whole structure of the tire conveying apparatus which concerns on this embodiment is demonstrated using FIG. The tire conveyance device 1 according to the present embodiment conveys the raw tire 4 in the vertical direction and the horizontal direction, and as shown in FIG. 1, a holding plate 10 for holding the raw tire 4 and a holding plate 10. And a moving mechanism 50 for moving the sensor in the vertical direction and the horizontal direction.

  The moving mechanism 50 is installed and fixed at a fixed position (floor surface, device frame, etc.) and extends in the vertical direction. The moving mechanism 50 can be swung in the circumferential direction and moved in the axial direction. The movable turning part 52 is attached to the movable turning part 52 and the arm 53 is fixed to the movable turning part 52 and extends in the horizontal direction. A support shaft 15 extends from the upper surface of the holding plate 10, and the support shaft 15 is fixed to an arm 53 extending in the horizontal direction. With this configuration, the raw tire 4 is conveyed in the vertical direction (in the direction of the arrow X in the figure) by the vertical movement of the movable turning unit 52 with respect to the pole 51, and the raw tire 4 is horizontally moved by the rotation of the movable turning unit 52 with respect to the pole 51. It is conveyed in the direction of arrow Y in the figure.

  Next, the holding of the raw tire 4 by the holding plate 10 will be described with reference to FIG. 2 is an enlarged cross-sectional view of a region corresponding to a broken line portion A in FIG.

  As shown in FIG. 2, the holding plate 10 includes a circular plate portion 12 and a cylindrical main body portion 13 provided on the lower surface of the plate portion 12 and having a circular outer periphery. The outer diameter of the main body 13 is smaller than the plate 12 in the radial direction. The raw tire 4 is held concentrically with the main body portion 13 of the holding plate 10. The support shaft 15 extends from the upper surface of the plate portion 12. In addition, by forming the main body part 13 in a cylindrical shape, the main body part 13 can be reduced in weight, and the pressurizing medium path 11 described later can be easily installed inside the main body part 13.

  An annular expansion holding member 40 is attached to the outer peripheral surface 13a of the main body 13 and is expanded toward the radially outer side of the main body 13 when a pressurized medium (for example, air) is supplied to the inside. Here, the raw tire 4 comes into contact with the expansion holding member 40 at the peripheral edge portion of the raw tire 4 formed by the bead portion 4c. Further, the raw tire 4 is held on the holding plate 10 by the peripheral edge of the raw tire 4 being opened from the inside in the radial direction by the expansion of the expansion holding member 40.

  Further, the holding plate 10 is provided with an inner disc portion 14, and the main body portion 13 is sandwiched between the plate portion 12 and the inner disc portion 14. The outer diameter of the inner disk part 14 is larger than the outer diameter of the main body part 13. Further, since the axial length of the raw tire 4 and the distance between the plate portion 12 and the inner disc portion 14 of the expansion holding member 40 are substantially equal, the expansion holding member 40 is composed of the plate portion 12 and the main body portion. 13 and a groove formed by the inner disk part 14.

  As shown in FIGS. 1 and 2, the tire conveyance device 1 is formed with a pressure medium path 11 for supplying a pressure medium to the inside of the expansion holding member 40, and is not illustrated through this. The pressurized medium from the pressurized medium supply source is sent into the expansion holding member 40. Further, the pressurized medium path 11 passes through the inside of the holding plate 10, passes through the main body portion 13, and is opened to the inside of the expansion holding member 40 through the through hole 41 a of the base member 41 on the outer peripheral side. Is formed.

  In the present embodiment, the pressure medium path 11 is one. FIG. 2 shows an axial section including the pressurized medium path 11, and the axial section does not always become a section including the pressurized medium path 11.

  Next, the structure of the expansion holding member 40 will be described with reference to FIG. 3 is an enlarged cross-sectional view of a region corresponding to a broken line portion B in FIG.

  FIG. 3 shows a state in which the raw tire 4 is not attached to the tire transport device 1, a solid line portion indicates a state in which no pressurized medium is supplied to the inside of the expansion holding member 40, and a broken line portion indicates the expansion holding member 40. The pressurized medium is supplied to the inside of the container and expanded. Here, the partial raw tire 4 is shown for reference of the magnitude relationship, and is shown concentrically with the expansion holding member 40. FIG. 4 shows a state in which the raw tire 4 is attached to the tire conveyance device 1 and the pressurized medium is supplied into the expansion holding member 40.

  An annular base member 41 is fixed to the outer peripheral surface 13 a of the main body 13, and the expansion holding member 40 is attached to the outer peripheral surface 13 a via the base member 41. The pressurizing medium discharge port 11a at the tip of the pressurizing medium path 11 is located inside the through hole 41a of the base member through the through hole 13b formed to penetrate from the inside of the main body 13 to the outside. The expansion holding member 40 is a stretchable member (for example, a rubber-based composition such as EPDM) that can seal the pressurized medium, and is locked to the base portion 41 by the locking portions 42a and 42b. .

As shown in FIG. 3, in a state where the raw tire 4 is not attached to the tire transport device 1, the outer diameter D _O of the expansion holding member 40 when the pressurized medium is not supplied to the inside of the expansion holding member 40 is , peripheral edge of the opening of the green tire 4, which is formed by the bead portion 4c is smaller than the inner diameter D _B of the (opening) (solid line). Further, the maximum outer diameter D _P of the expansion holding member 40 when a state where the inside to the pressurized medium of the expansion holding member 40 is supplied is greater than the inner diameter D _B of the peripheral edge of the opening of the green tire 4 (opening) (Dashed line part).

In addition, as shown in FIG. 4, when the pressurized medium is supplied to the inside of the expansion holding member 40 in a state where the raw tire 4 is attached to the tire conveyance device 1, the expansion holding member 40 expands and bead While deforming so as to fit the shape of the portion 4c, it is in close contact with the surface of the bead portion 4c (contact with the surface). Thus, the tire 4 is held by the holding plate 10 by the tire 4 being pressed from the radially inner side by the expansion of the expansion holding member 40. The outer diameter D _C of the circular plate portion 13, the larger than the inner diameter D _BP of the peripheral edge of the opening of the green tire 4, which is formed by the bead portions 4c, the expansion of the expandable holding member 40, the bead portion 4c is pressed toward the disc portion 12 side of the holding plate 10.

  Next, operation | movement of the tire conveying apparatus 1 which concerns on this embodiment is demonstrated using FIG. As schematically shown in FIG. 5A, in the present embodiment, it is assumed that the tire conveyance device 1 is disposed in the vicinity of the tire vulcanizer V as a loader for carrying a raw tire.

  The raw tire 4 molded by a tire molding machine (not shown) is stored in a storage area (not shown). Then, as necessary, the raw tire 4 stored in the storage area is transferred to the raw tire table C and positioned below the holding plate 10 of the tire conveyance device 1. In the state of FIG. 5A, the holding plate 10 is positioned above the position of the raw tire table C.

  Next, the movement turning part 52 moves downward, so that the holding plate 10 is lowered to a position where the plate part 12 of the holding plate 10 and the bead part 4c of the raw tire 4 come into contact with each other.

  Next, a pressurizing medium is supplied from a pressurizing medium supply source (not shown) to the inside of the expansion holding member 40, the expansion holding member 40 expands, and is deformed to fit the shape of the bead portion 4c by the bead portion 4c. The green tire 4 to be formed is in close contact with the peripheral edge (opening) where the green tire 4 is opened. Thus, the raw tire 4 is held by the holding plate 10 by the raw tire 4 being pressed from the inside in the radial direction by the expansion of the expansion holding member 40 (FIG. 4). Further, since the bead portion 4 c is pressed toward the plate portion 12 side of the holding plate 10 by the expansion of the expansion holding member 40, the raw tire 4 is more reliably held by the holding plate 10. In this way, the raw tire 4 on the raw tire table C is held by the holding plate 10 (FIG. 5A). The pressurized medium from the pressurized medium supply source is continuously supplied to the inside of the expansion holding member 40 so as to maintain a predetermined pressure.

  Next, when the moving swivel unit 52 moves upward, the holding plate 10 and the raw tire 4 held by the holding plate 10 rise.

  Next, the holding revolving part 52 and the green tire 4 are conveyed above the lower mold of the tire vulcanizer V by turning the moving turning part 52 in the circumferential direction.

  Next, when the moving swivel unit 52 moves downward, the holding plate 10 and the raw tire 4 are lowered, and the raw tire 4 is installed in the lower mold of the tire vulcanizer V (FIG. 5 ( b)).

  Next, the pressure medium path 11 is blocked and the pressure inside the expansion holding member 40 is reduced. Here, the expansion holding member 40 contracts and returns to its original shape, and the raw tire 4 is not held by the holding plate 10.

  Next, the moving turning part 52 moves upward, leaving the raw tire 4 inside the tire vulcanizer V, the holding plate 10 is raised and turned, and retracted out of the tire vulcanizer, Conveyance of the green tire 4 to the tire vulcanizer V is completed.

  As described above, according to the tire conveyance device 1 according to the present embodiment, since the raw tire 4 (tire) is held by the expansion of the expansion holding member 40, the tire conveyance device uses a plurality of chucks that expand and contract by the link mechanism. In comparison, the structure is simple, and the simple structure provides a low-cost and lightweight tire transport device. In addition, since the holding plate 10 that is the tire holding portion is reduced in weight, the stopping accuracy in the movement of the holding plate 10 in the vertical direction and the horizontal direction is improved. Therefore, using this apparatus, it becomes easy to accurately convey the tire to, for example, the center of a tire vulcanizer or the center of a PCI (post-cure inflation) apparatus.

  In addition, since the expansion holding member 40 is soft, the bead portion 4c of the raw tire 4 is less likely to be damaged than when a metal chuck is used.

  Further, the holding plate 10 has a main body portion 13 whose outer periphery is formed in a circular shape, and the expansion holding member 40 is formed in an annular shape and is attached to the outer peripheral surface 13a of the main body portion 13, so that it has a simple configuration. Thus, a lightweight tire transport device 1 with a low manufacturing cost can be obtained.

  In addition, since the expansion holding member 40 is formed in an annular shape and contacts with a peripheral edge portion (opening portion formed by a bead) that the tire opens on the entire circumference, the structure of the expansion holding member 40 can be simplified. it can. Further, since the expansion holding member 40 expands over the entire circumference, the tire can be centered with respect to the holding plate 10.

In addition, when the raw tire 4 (tire) is not attached, the outer diameter D _O of the expansion holding member 40 when the pressurized medium is not supplied to the inside of the expansion holding member 40 is the raw tire 4 (tire). smaller than the inner diameter D _B of the peripheral edge of the opening (opening formed by a bead) to. The outer diameter D _P of the expansion holding member 40 when the inside to the pressurized medium of the expansion holding member 40 is provided, the inner diameter D _B of the peripheral portion when the inside to pressurizing medium expansion holding member 40 is supplied Bigger than. Therefore, since it presses so that a surface may contact from the inner periphery side with respect to the tire peripheral part by which the outer periphery is restrict | limited by the bead, the raw tire 4 can be hold | maintained more reliably.

The holding plate 10 has a plate portion 12 having an outer diameter dimension (outer diameter D _C ) larger in the radial direction than the main body portion 13 at one end of the main body portion 13, and the outer diameter size of the plate portion 12. Since the (outer diameter D _C ) is provided so as to come into contact with the bead portion 4 c of the raw tire 4 (tire) from the tire outer side, the raw tire 4 is more reliably held by the holding plate 10.

  Moreover, the tire conveying apparatus 1 which concerns on this invention can be used in the process of carrying in the raw tire 4 to a tire vulcanizer like this embodiment. However, the present invention is not limited to such a form, and can be used for other tire conveying processes. For example, the present invention can be applied to a process of carrying out a vulcanized tire from the inside of a tire vulcanizer and other tire handling processes.

  Next, a modified example of the tire conveyance device 1 according to the present embodiment will be described with reference to FIG. FIG. 6 is an enlarged cross-sectional view of the tire transport device according to this modification in a region corresponding to the broken line portion B in FIG. In addition, in this modification, about the same part (213, 213a, 214) corresponding to the structural member of the tire conveying apparatus 1 which concerns on said one embodiment, the code | symbol (13, 13a, 214) of said one embodiment. 14) are sequentially matched with each other, and the description of the similar parts is omitted. The portions other than the portion shown in FIG. 6 are the same as those in the above-described embodiment, and thus description thereof is omitted.

  In the holding plate 210 of the tire conveyance device 2 according to this modification, a cylindrical reduced diameter main body 313 having an outer diameter smaller than that of the main body 213 is further provided below the inner disk portion 214. An annular expansion holding member 340 having an outer diameter smaller than that of the expansion holding member 240 is attached to the outer peripheral surface 313 a of the reduced diameter main body 313. The pressurizing medium paths 211 and 311 are formed, and the pressurizing medium is sent to the inside of the expansion holding members 240 and 340 through each of them. With such a configuration, two types of tires having different minimum inner diameters of the bead portions can be held and transported by the tire transport device 2 without replacing the holding plate 210.

  In this modification, two types of annular expansion holding members having different outer diameters are attached, but a structure in which three or more types are attached may be used. Further, the pressurized medium supply sources of the pressurized medium paths 211 and 311 may be provided separately or the same. If they are the same, a valve may be provided to switch the flow path according to the size of the raw tire. Further, the pressurizing medium path inside the holding plate 210 and the external pressurizing medium path may be detachably connected by a one-touch coupler or the like.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims.

  For example, in the above embodiment, the expansion holding member is attached to the holding plate via the base member. However, the present invention is not limited to this configuration, and the expansion holding member may be directly attached to the holding plate.

  In the above embodiment, the material of the expansion holding member is a stretchable member that can seal the pressurized medium (for example, a rubber-based composition such as ethylene / propylene rubber), but is not limited thereto. The cloth may be impregnated with rubber to increase the strength. Moreover, when the rubber composition is EPDM, a highly durable expansion holding member can be obtained by using a rubber having a hardness in the range of 40 to 70. Moreover, in said embodiment, although the cyclic | annular expansion | swelling holding member was used, if it can hold | maintain and lift a tire, it will not be restricted to this form. For example, a plurality of expansion holding members may be intermittently attached to the outer peripheral surface of the holding plate main body, and the pressure medium may be separately supplied to each inside.

  In the above embodiment, the plate portion has a circular shape, but other shapes (for example, a polygonal fan shape) may be used, and an inner disk portion and a support shaft are provided. However, the inner disk portion and the support shaft may not be provided.

  Moreover, the structure of the moving mechanism in said embodiment is an example, and is not restricted to such a structure. Further, the carrying-in to the tire vulcanizer in the above embodiment is not limited to this form, for example, a raw tire that is carried by a conveyor instead of going to grab the raw tire on the raw tire stand. May be carried into a tire vulcanizer.

  Moreover, in the said embodiment, although the air which is easy to ensure in a factory is illustrated as an example of a pressurization medium, other gas (for example, inert gas) etc. pressurize an expansion holding member from the inside, and expand it. There may be.

Schematic which showed the whole structure of the tire conveying apparatus which concerns on one Embodiment of this invention. The expanded sectional view of the area | region corresponded to the broken-line part A of FIG. The expanded sectional view of the area | region corresponded to the broken-line part B of FIG. 2, and the partial expanded sectional view of the raw tire shown concentrically with the expansion | swelling holding member in a figure. The expanded sectional view of the area | region corresponded to the broken-line part B of FIG. 2 in the state by which the raw tire was attached to the tire conveying apparatus. Schematic which showed operation | movement of the tire conveying apparatus of FIG. (A) is the state which hold | maintained the raw tire which has been conveyed. (B) is the state which is conveying the raw tire inside a tire vulcanizer. The expanded sectional view of the tire conveying apparatus which concerns on the modification of this embodiment in the area | region corresponded to the broken-line part B of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Tire conveying apparatus 4 Raw tire 4c Bead part 10, 210 Holding plate 40, 240, 340 Expansion holding member 12, 212 Plate part 13, 213 Main body part 13a, 23a, 213a Outer peripheral surface 50 Moving mechanism

Claims (4)

In a tire transport device that holds and transports a tire,
A holding plate for holding a tire having a main body portion whose outer periphery is formed in a circular shape and a plate portion that is provided at one end of the main body portion and is larger in the radial direction than the main body portion ;
A moving mechanism for moving the holding plate in the conveying direction;
An expansion holding member that is attached to the outer peripheral surface of the main body and expands when a pressurized medium is supplied to the inside;
The tire is held on the holding plate by the peripheral edge of the tire opening being pressed from the inside in the radial direction by the expansion of the expansion holding member ,
The plate portion includes a tire conveying apparatus which is characterized that you have provided in contact with the tire outer side with respect to the bead portion of the tire. The tire conveyance device according to claim 1, wherein the expansion holding member is formed in an annular shape and is in contact with the peripheral portion on the entire circumference. When the tire is not attached, the outer diameter of the inflation holding member is smaller than the inner diameter of the peripheral edge when no pressurized medium is supplied to the inside of the inflation holding member, and the inside of the inflation holding member The tire conveying device according to claim 2 , wherein when the pressurized medium is supplied to the tire, the tire conveying device is larger than the inner diameter of the peripheral portion. The tire conveyance apparatus of any one of Claims 1-3 used in the conveyance process of a raw tire or a vulcanized tire.

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