WO2010109603A1

WO2010109603A1 - Tire vulcanizer

Info

Publication number: WO2010109603A1
Application number: PCT/JP2009/055926
Authority: WO
Inventors: 矢野英治; 田野實貴彦
Original assignee: 平田機工株式会社
Priority date: 2009-03-25
Filing date: 2009-03-25
Publication date: 2010-09-30

Abstract

A tire vulcanizer is equipped with an inner circumferential wall which surrounds a center post, an outer circumferential wall which surrounds the aforementioned inner circumferential wall, a partitioning wall which radially divides the space between the aforementioned inner circumferential wall and the aforementioned outer circumferential wall into an inner space toward the aforementioned inner circumferential wall and connected to a bladder, and an outer space toward the aforementioned outer circumferential wall and connected to the aforementioned bladder, and a circulation means which cyclically supplies and discharges a heated liquid into and out of the aforementioned bladder via the aforementioned inner space and the aforementioned outer space. The aforementioned circulation means has a cylindrical rotating body with a center hole through which the aforementioned center post passes, and a fin section which is formed at the top of the aforementioned rotating body, and is equipped with an impeller member which is provided inside the aforementioned outer circumferential wall, a bearing section which supports the aforementioned impeller member while allowing it to rotate freely around the aforementioned center post, and a drive means which rotates the aforementioned impeller member.

Description

Tire vulcanizer

The present invention relates to a tire vulcanizing apparatus that performs vulcanization molding of a raw tire.

As a tire vulcanizing apparatus for vulcanizing and molding an unvulcanized raw tire (also called a green tire), an apparatus using a mold having a groove for forming a specific pattern on the surface of the tire and a bladder is used. It has been proposed (for example, Japanese Patent No. 3199780). In such a tire vulcanizing device, the bladder is inflated so as to closely adhere to the inner surface of the raw tire loaded in the mold, and a high-temperature and high-pressure heating fluid is supplied into the bladder to thereby provide a raw tire. The green tire is pressed against the mold while heating the inner wall surface uniformly. Then, vulcanization molding is performed by heating the green tire from outside and inside with the heated mold and the heating fluid in the bladder.

In addition, a so-called center post type tire vulcanizing apparatus in which the upper clamp part of the bladder can be moved up and down has been proposed (for example, Japanese Patent Laid-Open No. 07-088848, Japanese Patent Laid-Open No. 07-329066, Japanese Special (Kaihei 2001-322128). In this center post type tire vulcanizing apparatus, when the raw tire is set in the apparatus, it is possible to prevent the bladder and the raw tire from interfering with each other and to perform vulcanization molding of raw tires of different sizes. There are advantages.

Here, in order for the raw tire to be uniformly vulcanized and molded throughout, it is desirable that the temperature distribution of the heating fluid is uniform in the bladder. Therefore, Japanese Laid-Open Patent Publication No. 07-088848, Japanese Laid-Open Patent Publication No. 07-329066, and Japanese Laid-open Patent Publication No. 2001-322128 disclose tire vulcanizing apparatuses having a circulating function of heated fluid.

However, as shown in FIG. 1 of Japanese Patent Application Laid-Open No. 2001-322128, a device having a mechanism that circulates a heated fluid by rotating a fan or the like will fail if the rotating mechanism is heated by the heated fluid. It may be likely to occur or its life may be shortened. In particular, when the bearing portion is heated, the fan or the like may not rotate smoothly.

An object of the present invention is to provide a tire vulcanizing apparatus that reduces the influence of heat of the heating fluid on the heating fluid circulation mechanism.

According to the present invention, there is provided a tire vulcanizing device for vulcanizing the raw tire by supplying a heated fluid to a bladder disposed inside the raw tire in a mold and inflating the bladder. A center post extending in the vertical direction, an inner peripheral wall surrounding the periphery of the center post, an outer peripheral wall surrounding the inner peripheral wall, and a space between the inner peripheral wall and the outer peripheral wall communicated with the bladder. A partition wall that divides radially into an inner space on the side, an outer space on the outer peripheral wall side that communicates with the bladder, a center post lifting and lowering means that lifts and lowers the center post relative to the inner peripheral wall, and an inner space of the bladder Circulation means for circulating and supplying the heating fluid to and from the inner space and the outer space, and heating means for heating the circulating heating fluid, wherein the circulation means is the center. post A cylindrical rotating body having a penetrating central hole; and a fin portion formed in an upper portion of the rotating body and provided in a communication space communicating the lower end of the inner space and the lower end of the outer space, An impeller member provided in an outer peripheral wall, a bearing provided around the rotating body in the outer peripheral wall and rotatably supporting the impeller member around the center post, and a drive for rotating the impeller member And a tire vulcanizing device.

In the tire vulcanizing apparatus according to the present invention, the rotating body of the impeller member supported by the bearing portion is positioned below the fin portion, and the circulation portion of the heating fluid includes the fin portion. The communication space is folded. Therefore, it can suppress that a heating fluid flows into the said bearing part, and can reduce the situation where a malfunction arises because the said rotary body and the said bearing part are heated with a heating fluid.

It is a front view of tire vulcanizer A concerning one embodiment of the present invention. 1 is a side view of a tire vulcanizing apparatus A. FIG. 1 is a sectional view of a tire vulcanizing apparatus A. FIG. FIG. 4 is a sectional view taken along line XX in FIG. 3. FIG. 4 is a sectional view taken along line YY in FIG. 3. 3 is a partial cross-sectional view around a housing member 32. FIG. It is explanatory drawing of a vulcanization molding process. It is explanatory drawing of a vulcanization molding process. 4 is a perspective view of a partition wall 34. FIG.

FIG. 1 is a front view of a tire vulcanizing apparatus A according to an embodiment of the present invention. The tire vulcanizing apparatus A includes a mold apparatus B, which will be described later, and performs a vulcanization molding process on a raw tire. 2 is a side view of the tire vulcanizing apparatus A, and FIG. 3 is a cross-sectional view of the tire vulcanizing apparatus A. Although FIG. 3 includes a partially enlarged view, the center post 10 is shown in cross section in the partially enlarged view. 4 is a cross-sectional view taken along line XX in FIG. 3, and FIG. 5 is a cross-sectional view taken along line YY in FIG. FIG. 6 is a partial cross-sectional view around the housing member 32.

The tire vulcanizing apparatus A includes a center unit 1 and a center unit lifting device 2. The center unit 1 includes a center post 10 extending in the vertical direction. In the case of this embodiment, the center post 10 is a long tubular member, and a screw groove is formed on the lower peripheral surface of the center post 10 to form a ball screw 10a. A bladder holding portion 11 on the flange is provided on the upper portion of the center post 10. A ring-shaped clamp member 12 is attached to the periphery of the bladder holding portion 11. The bladder BL is a tire-like bag body having openings on the upper side and the lower side of the center thereof, and has elasticity that allows expansion and contraction. The bladder BL is sandwiched between the periphery of the bladder holding portion 11 and the clamp member 12 at the periphery of the upper opening, and is held airtight by the bladder holding portion 11 and the clamp member 12.

The center unit 1 includes an inner peripheral wall 20 and an outer peripheral wall 30. In the case of this embodiment, the inner peripheral wall 20 forms a cylindrical body concentric with the center post 10 and surrounds the periphery of the center post 10. The outer peripheral wall 30 includes

housing members

31 and 32 surrounding the inner peripheral wall 20 and a housing member 33 below the housing member 32.

The housing member 31 is formed in a cylindrical shape concentric with the center post 10. A plurality of intake openings 311 and exhaust openings 312 are formed on the upper peripheral surface of the housing member 31 along the circumferential direction. A flange-like bladder holding portion 313 is provided below the

openings

311 and 312 in the outer periphery of the housing member 31. A ring-shaped clamp member 314 is attached to the periphery of the bladder holding portion 313. The bladder BL is sandwiched between the periphery of the bladder holding portion 313 and the clamp member 314, and the bladder BL is held in an airtight manner by the bladder holding portion 313 and the clamp member 314. The bladder BL is detachably held in the tire vulcanizing apparatus A by the bladder holding portion 11 and the clamp member 12, and the bladder holding portion 313 and the clamp member 314. Further, a flange portion 31 a that protrudes toward the center portion side is formed at the lower portion of the housing member 31.

The inner peripheral wall 20 and the housing member 31 are fixed to each other by a connecting member 21 at their upper end portions. The connecting member 21 is a disk-like member having a hole through which the center post 10 passes at the center thereof, and a bearing 22 that supports the center post 10 is provided in the hole. The bearing 22 smoothly guides the elevation of the center post 10. An upper end portion of the inner peripheral wall 20 is fixed to the connecting member 21 via a seal member 20a. The seal member 20a hermetically blocks the internal space of the inner peripheral wall 20 from the outside.

A partition wall 34 is provided in the internal space of the housing member 31. FIG. 9 is a perspective view of the partition wall 34. The partition wall 34 partitions the space between the inner peripheral wall 20 and the housing member 31 into an inner space S1 on the inner peripheral wall 20 side and an outer space S2 on the housing member 31 side in the radial direction. The inner space S1 communicates with the inner space of the bladder BL through the opening 311. The inner peripheral surface of the partition wall 34 has a cylindrical shape as a whole, and is formed in a cylindrical main body 34a concentric with the center post 10 and an upper portion formed at the upper end of the main body 34a and having a diameter larger than that of the main body 34a. An enlarged diameter portion 34b, a lower diameter enlarged portion 34c formed at the lower end portion of the main body portion 34a and having a larger diameter than the main body portion 34a, and extended from the upper enlarged diameter portion 34b to the lower enlarged diameter portion 34c, A plurality of rib portions 34d provided in the circumferential direction of the main body portion 34a. The outer space S2 is further partitioned in the circumferential direction by the rib portion 34d.

The main body portion 34 a and the upper enlarged diameter portion 34 b are surrounded by the housing member 31, and the end portion of the upper enlarged diameter portion 34 b is the inner periphery of the boundary portion between the opening 311 and the opening 312 of the housing member 31. Near the surface. The rib portion 34d of the partition wall 34 has a stepped portion 34d '. The partition wall 34 is supported in a mounted state on the flange portion 31 a such that the step portion 34 d ′ engages on the flange portion 31 a of the housing member 31.

The outer partition wall 35 is also provided in the internal space of the housing member 31. The outer partition wall 35 is a cylindrical body concentric with the center post 10 and partitions the outer space S2 in a radial direction into a space S21 on the partition wall 34 side and a space S22 on the housing member 31 side. The space S21 communicates with the internal space of the bladder BL through the opening 312. The outer partition wall 35 is supported by the housing member 31. In the space S21, a plurality of heating units 36 that heat the heating fluid that passes through the space S21 are arranged in the spaces separated by the rib portions 34d in the circumferential direction. By arranging a plurality of heating units 36 extending vertically along the longitudinal direction of the main body 34a in the circumferential direction in the space S21, the heating fluid can be heated more uniformly. The outer partition wall 35 may be a circular cylindrical member. Alternatively, the outer partition wall 35 may be connected to the rib portion 34d so that the partition wall 34 and the outer partition wall 35 are integrally formed.

In the case of this embodiment, the heating unit 36 is a rod-shaped housing element that contains a heating element such as a heating wire, and is supported by the partition wall 34, for example. The space S22 functions as a heat insulating space that reduces the heat of the heating fluid passing through the space S21 from reaching the housing member 31. The heating unit 36 may be provided in the inner space S1. In other words, the recovery system that circulates and passes the relatively low temperature heating fluid from the bladder BL in the space S21 may be a supply system that circulates and passes the relatively high temperature heating fluid to the bladder BL in the inner space S1.

As shown in FIG. 6, the housing member 32 is formed in a cylindrical shape concentric with the center post 10 as a whole, and is connected to the lower end of the housing member 31. The housing member 32 includes an upper surrounding portion 321, an intermediate surrounding portion 322, and a lower surrounding portion 323, and the upper surrounding portion 321 and the lower surrounding portion 323 are larger in diameter than the intermediate surrounding portion 322.

A vortex chamber-like communication in which the lower end of the inner space S1 and the lower end of the space S21 are communicated with each other at the lower end of the housing member 31, the upper surrounding portion 321, the partition wall 20, and the lower enlarged portion 34c of the partition wall 34. A space S3 is formed. The upper surrounding portion 321 surrounds the lower diameter enlarged portion 34 c of the partition wall 34 and the fin portion 40 a of the impeller member 40. The upper surrounding part 321 is provided with a plurality of heating fluid supply / recovery holes 321a spaced apart in the circumferential direction. A heating fluid supply and recovery device 42 is connected to the supply / recovery hole 321a, and a heating fluid such as nitrogen gas is supplied to the bladder BL via the communication space S3. Further, the heated fluid discharged from the bladder BL to the inner space S1 is circulated and collected into the communication space S3 via the impeller member 40. The supply / recovery device 42 includes, for example, a tank that accumulates the heating fluid, a compressor that pumps or sucks the heating fluid, and a valve that seals the supply / recovery hole 321a and confines the heating fluid to the center unit 1 side. .

The center unit 1 rotates an impeller member 40, a bearing 41, and an impeller member 40 described below as a circulation device that circulates the supply and discharge of the heating fluid into the bladder BL through the inner space S1 and the space S21. A drive device is provided.

The impeller member 40 is formed in a cylindrical rotating body 40b having a center hole 40c through which the center post 10 and the inner peripheral wall 20 penetrate, and a fin portion 40a provided on the upper side of the rotating body 40b and facing the communication space S3. And is provided in the housing member 32.

A bearing portion 41 is provided in the housing member 32. The housing member 32 has a projecting portion 322c projecting inward on the inner peripheral portion of the intermediate surrounding portion 322, and the body portion of the bearing portion 41 is fitted inside the projecting portion 322c. A flange portion 41c of 41 is seated on the upper surface of the protruding portion. The bearing portion 41 is a cylindrical body that surrounds the periphery of the rotating body 40 b and supports the impeller member 40 so as to be rotatable around the center post 10. The bearing portion 41 is formed with a ring-shaped ring groove 41a that is open on the inner peripheral surface thereof, and at least two air passages 41b that are open on the outer peripheral surface of the bearing portion 41 are communicated with the groove 41a. .

Air passages

322a and 322b communicating with the air passage 41b are formed in the intermediate surrounding portion 322.

An air supply device 43 such as a compressor for supplying compressed air is connected to the air passage 322a. The compressed air supplied from the air supply device 43 passes through the air passage 322a, the air passage 41b, and the ring groove 41a, and passes through the air passage (not shown) formed in the main body of the bearing portion 41. The gap ga between the inner peripheral surfaces, a part of the upper surface, the lower surface of the fin portion 40a, the gap gb between the inner peripheral surfaces, a part of the upper surface of the main body 521a of the transmission member 521, and the lower surface of the bearing 41. Between the air passage 41b and the air passage 322b and exhausted to the outside. Note that a part of the bearing portion 41 facing the inner peripheral surface is formed of a porous material, and micropores of the porous material are used to supply and discharge air to the inner peripheral surface of the bearing portion 41. It is good.

The rotating body 40b is supported concentrically with the center post 10 in a non-contact state by the pressure of compressed air injected from the inner peripheral surface of the bearing portion 41 to the radially inward and upper and lower surfaces. Then, by rotating the impeller member 40 around the center post 10, it is possible to generate an air flow from the internal space S1 toward the first space S21 indicated by an arrow in FIG. 6 in the communication space S3. The direction of the airflow may be opposite to the direction indicated by the arrow in FIG. 6 (the direction from the space S21 toward S1), and the direction of the airflow can be set by the shape of the fin portion 40a and the like. As described above, in the present embodiment, the bearing portion 41 is a non-contact type air bearing. However, other non-contact type bearings may be used, and contact type bearings such as a slide bearing and a rolling bearing may be used. Other types of bearings such as bearings can also be employed.

The housing member 33 is formed in a cylindrical shape concentric with the center post 10 as a whole, and is connected to the lower end of the housing member 32. An opening 33 a is formed in the peripheral wall of the housing member 33.

Next, a drive device that rotates the impeller member 40 will be described. The drive device includes a motor 51 and a transmission device 52 that transmits the output of the motor 51 to the impeller member 40. In the present embodiment, the motor 51 is disposed outside the outer peripheral wall 30. Although the motor 51 may be arranged inside the outer peripheral wall 30, it is possible to more effectively prevent the influence of the heat of the heating fluid from reaching the motor 51 by arranging the motor 51 outside.

The transmission device 52 includes a transmission member 521, a transmission member 522, a bearing 523, and gears 524 and 525. The transmission member 521 has a center hole through which the center post 10 and the inner peripheral wall 20 pass, and a cylindrical main body 521a concentric with the center post 10, and a magnetic force generator 521b provided on the outer periphery of the main body 521a. And is connected to the lower end of the rotating body 40b of the impeller member 40. In the case of this embodiment, the magnetic force generation part 521b is a permanent magnet. The magnetic force generator 521b is disposed, for example, over the entire outer periphery of the main body 521a or at a plurality of locations in the circumferential direction of the outer periphery.

The transmission member 522 has a center hole through which the center post 10 passes, and is provided integrally with the center post 522a and the main body 522a. Part 522c and magnetic force generation part 522b provided on the inner periphery of cylinder part 522c. In the case of this embodiment, the magnetic force generation part 522b is a permanent magnet. The magnetic force generator 522b is disposed, for example, over the entire circumference of the inner peripheral portion of the cylindrical portion 522c or at a plurality of locations in the circumferential direction of the inner peripheral portion.

The transmission member 522 is supported by a bearing 523 so as to be rotatable concentrically with the center post 10. The bearing 523 is supported by a cylindrical support member 33 b fixed at the center of the housing member 33. The outer peripheral portion of the support member 33b is formed in a fin shape, and improves the heat dissipation of heat generated with rotational friction.

The gear 524 is fixed to the lower part of the transmission member 522. The gear 525 is fixed to the output shaft of the motor 51, and the gear 524 and the gear 525 mesh with each other at the opening 33 a of the housing member 33. Accordingly, when the motor 51 is driven, the transmission member 522 is rotated, the transmission member 521 is also rotated by the magnetic force between the magnetic force generators 521b and 522b, and the impeller member 40 is rotated.

In the present embodiment, the magnetic force generation part 521b and the magnetic force generation part 522b are arranged in the radial direction, but may be arranged in the vertical direction. Further, although the impeller member 40 is rotated by the motor 51, other configurations may be adopted. For example, the magnetic force generation part 522b is an electromagnet provided in the circumferential direction on the inner peripheral part of the cylindrical part 522c, and the impeller member 40 is rotated by the magnetic force between the electromagnet and the magnetic force generation part 521b by sequentially exciting each electromagnet. It is good also as composition to do. In this case, a member corresponding to the transmission member 522 is fixed.

Next, a partition cylinder 324 is provided in the lower surrounding portion 323 of the housing member 32. The partition cylinder 324 has a cylindrical shape as a whole, an interposition part 324 a interposed between the outer peripheral part of the transmission member 521 and the cylinder part 522 c of the transmission member 522, and an outer connection part 324 b connected to the housing member 32. And an inner connection portion 324 c connected to the inner peripheral wall 20. The inner connection portion 324c is connected to the lower end of the inner peripheral wall 20 via a seal member 324d, and the partition cylinder 324 is hermetically sealed in the space on the transmission member 521 side and the space on the transmission member 522 side in the housing member 32. Partition. Thereby, it can prevent that a heating fluid leaks below rather than the partition cylinder 324. FIG. The interposition part 324a is interposed between the outer peripheral part of the transmission member 521 and the cylindrical part 522c of the transmission member 522. By using the magnetic force for power transmission between the transmission member 521 and the transmission member 522, Power can be transmitted without hindrance. The inner peripheral wall 20 is sealed at its lower end by the sealing member 324d and at its upper end by the sealing member 20a, so that the heating fluid leaks to the outside of the

housing members

31 and 32 and causes heat damage. It is possible to prevent the change, and to reduce the variation in temperature change during the heat treatment in the heat treatment space.

Next, the center post lifting / lowering device 60 that lifts and lowers the center post 10 relative to the inner peripheral wall 20 will be described. In the present embodiment, the center post 10 is moved up and down by a ball screw mechanism as described below, but other types of mechanisms may be employed.

A guide groove 10 b is formed along the longitudinal direction of the center post 10 in a portion of the ball screw 10 a below the center post 10. At the bottom 33c of the housing member 33, there is provided a holding portion 62 that holds and holds a ball nut 61 that meshes with the ball screw 10a in a freely rotatable manner.

Gears

63 and 64 and a motor 65 are provided as a drive unit for rotating the ball nut 61 around the center post 10. The gear 63 is connected to the lower end of the ball nut 61. The gear 64 is fixed to the output shaft of the motor 65. Thus, by driving the motor 65, the ball nut 61 is rotated via the

gears

64 and 63. However, since the height position of the ball nut 61 is fixed by the holding portion 62, the ball screw 10a is raised and lowered. At this time, a sliding member (not shown) fixedly provided on the upper portion of the ball nut 61 is fitted into the guide groove 10b and is slid along the guide groove 10b. For this reason, the rotation of the center post 10 is restricted, and the center post 10 is moved up and down without rotating.

Next, the center unit lifting device 2 will be described. The center unit lifting device 2 includes a base portion 70. A pair of elevating rail members 71 and a pair of side panels 72 are erected on the base portion 70. A slider 73 is attached to each lifting rail member 71. The slider 73 is guided by the elevating rail member 71 and can move up and down.

A support portion 74 is fixed to the slider 73. The support portion 74 includes a base plate 74a fixed to the slider 73, and a pair of side plates 74b protruding forward from the base plate 74a. The housing member 33 is fixed to the side plate 74b, and the support portion 74 supports the center unit 1. Further, the

motors

51 and 65 described above are supported on the side plate 74b via

brackets

51a and 65a.

The pair of side panels 72 are connected by a beam member 75. A ball screw 76 is rotatably supported between the beam member 75 and the base portion 70. A ball nut 77 is engaged with the ball screw 76, and the ball nut 77 and the support portion 74 are connected by a connecting member 78.

A motor 79 is supported on the base unit 70. A gear 80 is fixed to the output shaft of the motor 79. A gear 81 that meshes with the gear 80 is connected to the lower end of the ball screw 76. When the motor 79 is driven, the ball screw 76 rotates through the

gears

80 and 81, and the center nut 1 moves up and down by moving the ball nut 77 upward or downward along the ball screw 76.

A brake device 82 is mounted on the beam member 75. The brake device 82 is a disc brake, and exerts a braking force against the rotation of the ball screw 76 by sandwiching a disc connected to the upper end portion of the ball screw 76 with a caliper. When the center unit 1 stops at a predetermined position, the brake device 82 is used to keep the center unit 1 stopped at that position.

Next, an example of a vulcanization molding process by the tire vulcanizing apparatus A having such a configuration will be described. 7 and 8 are explanatory diagrams of the vulcanization molding process. FIGS. 7 and 8 show a mold apparatus B constituting a mold apparatus portion of the tire vulcanizing apparatus A as an example. The mold apparatus B includes a mold lifting / lowering apparatus 101 and a base apparatus 102.

The mold lifting device 101 supports the upper mold 110a and the side mold 110b, and is lifted and lowered by a drive unit (not shown). The side mold 110 b is supported by the slide unit 104. The base device 102 supports the lower mold 110c. The heater 103 heats the molds 110a to 110c.

The tire vulcanizing apparatus A first sets the center unit 1 to a height suitable for the mold apparatus B by the center unit lifting / lowering apparatus 2. Since the center unit 1 can be moved up and down by the center unit lifting and lowering device 2, the center unit 1 can be set to an optimum height according to the type of raw tire for different mold devices. Next, as shown in the upper side of FIG. 7, the center post 10 is raised so that the bladder BL extends in the vertical direction. This prevents the bladder BL and the raw tire T from interfering when the raw tire T is set on the mold 110c of the base device 102.

The raw tire T is transferred by a transfer device (not shown) and set on the mold 110c. Thereafter, the die lifting device 101 is lowered and the center post 10 is lowered. During the lowering of the mold lifting device 101, the slide portion 104 is landed on the base device 102, and both the slide portions 104 are moved inward as the mold lifting device 101 is lowered. As a result, as shown in the lower side of FIG. 7, all the molds 110 a to 110 c are set on the raw tire T.

Next, the heater 103 is operated to heat the molds 110a to 110c. Further, the supply / recovery device 42 supplies the heated fluid to the bladder BL via the space S1. As the heating fluid is supplied, the bladder BL expands, and the bladder BL comes into close contact with the inner surface of the raw tire T as shown in FIG. Then, the heating unit 36 is operated to generate heat, and the heating fluid is circulated in the center unit 1.

Specifically, the impeller member 40 is rotated by driving the motor 51. As a result, the heating fluid circulates through the path in the bladder BL → the opening 311 → the inner space S1 → the communication space S3 → the space S21 → the opening 312 → the bladder BL. The heating fluid is heated by the heating unit 36 in the process of circulation and is maintained at a required temperature. In the bladder BL, since the heated fluid is constantly blown out from the opening 312 and the heated fluid is discharged to the opening 311, the flow of the heated fluid in the bladder BL is promoted, and the temperature distribution in the bladder BL is increased. Becomes uniform. Thus, the raw tire T can be vulcanized and molded.

In the case of this embodiment, the rotating body 40b of the impeller member 40 supported by the bearing portion 41 is located below the fin portion 40a, and the circulating flow of the heating fluid is a communication space in which the fin portion 40a is disposed. Wrapped at S3. Therefore, it can suppress that a heating fluid flows into the bearing part 41, and can reduce the situation where a malfunction arises because the rotary body 40b and the bearing part 41 are heated with a heating fluid. In particular, in this embodiment, since the bearing part 41 is an air bearing, the influence of the heat of the heating fluid which flows into the bearing part 41 can be prevented.

Claims

A tire vulcanizing device for vulcanizing the raw tire by supplying a heating fluid to a bladder disposed inside the green tire in the mold and inflating the bladder,
A center post extending vertically,
An inner peripheral wall surrounding the center post;
An outer peripheral wall surrounding the inner peripheral wall;
A partition wall that radially divides a space between the inner peripheral wall and the outer peripheral wall into an inner space on the inner peripheral wall side communicating with the bladder and an outer space on the outer peripheral wall side communicating with the bladder; ,
Center post lifting and lowering means for lifting and lowering the center post relative to the inner peripheral wall;
Circulating means for circulating and supplying the heated fluid into and out of the bladder through the inner space and the outer space;
Heating means for heating the circulating heating fluid;
With
The circulating means is
A cylindrical rotating body having a center hole through which the center post passes, and a fin portion provided in a communication space formed at an upper portion of the rotating body and communicating with a lower end of the inner space and a lower end of the outer space. And an impeller member provided in the outer peripheral wall;
A bearing portion provided around the rotating body in the outer peripheral wall and rotatably supporting the impeller member around the center post;
Drive means for rotating the impeller member;
A tire vulcanizing apparatus comprising:
The driving means includes
A motor provided outside the outer peripheral wall;
Transmission means for transmitting the output of the motor to the impeller member;
The tire vulcanizer according to claim 1, comprising:
The driving means includes
A motor,
Transmission means for transmitting the output of the motor to the impeller member,
The transmission means includes
A cylindrical first main body portion having a center hole through which the center post passes, and a first magnetic force generation portion provided on an outer peripheral portion of the first main body portion, are connected to a lower end portion of the rotating body. A first transmission member;
A cylindrical second main body portion having a center hole through which the center post passes, a cylindrical portion provided integrally with the second main body portion and surrounding the periphery of the first transmission member, and an inner peripheral portion of the cylindrical portion A second transmission member having a second magnetic force generator provided on the center post and rotatably supported around the center post;
The tire vulcanizing apparatus according to claim 1, comprising:
The tire vulcanizing apparatus according to claim 3, wherein each of the first and second magnetic force generators is a permanent magnet.
An interposition part interposed between the outer peripheral part of the first transmission member and the cylindrical part of the second transmission member, an outer connection part connected to the outer peripheral wall, and an inner connection connected to the inner peripheral wall The partition cylinder body which has a portion and partitions the inside of the outer peripheral wall into the space on the first transmission member side and the space on the second transmission member side in an airtight manner. Tire vulcanizer.
An upper holding portion provided on an upper portion of the center post and holding a peripheral edge of the upper opening of the bladder;
A lower holding portion that is provided on the outer periphery of the outer peripheral wall and holds the periphery of the lower opening of the bladder;
The tire vulcanizer according to claim 1, comprising:
The partition wall is
A cylindrical body,
An upper diameter-expanded portion formed at the upper end of the main body and having a diameter larger than that of the main body;
A lower diameter-expanded portion formed at the lower end of the main body and having a diameter larger than that of the main body;
Have
The outer peripheral wall is
A first housing member surrounding the main body portion and the upper enlarged diameter portion;
A second housing member surrounding the lower diameter portion, the communication space, the impeller member, and the bearing portion and connected to a lower end of the first housing member;
With
The second housing member is
A first surrounding portion surrounding the bearing portion;
A diameter of the first surrounding portion that is larger than that of the first surrounding portion, a lower surrounding portion, the communication space, and a second surrounding portion that surrounds the fin portion of the impeller member;
The tire vulcanizer according to claim 1, comprising:
The communication space is
The tire vulcanizing apparatus according to claim 7, wherein the tire vulcanizing device is formed by the first housing member, the second surrounding portion of the second housing member, and the lower diameter enlarged portion of the partition wall. .
The supply / recovery means connected to the second surrounding portion of the second housing member and supplying / recovering the heated fluid to / from the inner space or the outer space. Tire vulcanizer.
2. The tire vulcanizing apparatus according to claim 1, wherein the heating means is provided in either the outer space or the inner space.
An outer partition wall that radially divides the outer space into a first space on the partition wall side through which the heating fluid circulates and a second space on the outer peripheral wall side;
2. The tire vulcanizing apparatus according to claim 1, wherein the heating means is a plurality of heating elements provided in the circumferential direction in the first space.
Air supply means for supplying air between the bearing portion and the peripheral surface of the rotating body;
The tire vulcanizing apparatus according to claim 1, wherein the rotating body is supported concentrically with the center post by the pressure of the air.
The center post lifting means is
A ball nut screwed with a ball screw provided on the lower peripheral surface of the center post;
A drive unit for rotating the ball nut around the center post;
The tire vulcanizer according to claim 1, comprising:
A center unit comprising the center post, the inner peripheral wall, the outer peripheral wall, the partition wall, the center post lifting and lowering means, and the driving means;
Center unit elevating means for elevating the center unit;
The tire vulcanizer according to claim 1, comprising: