WO2003074881A1

WO2003074881A1 - Fluid feed device, and tire vulcanizing equipment using the fluid feed device

Info

Publication number: WO2003074881A1
Application number: PCT/JP2003/002682
Authority: WO
Inventors: Naofumi Yoshimi
Original assignee: Ichimaru Giken Co., Ltd.
Priority date: 2002-03-07
Filing date: 2003-03-06
Publication date: 2003-09-12
Also published as: AU2003221327A1; JP2006022644A

Abstract

A fluid feed device (A) capable of eliminating a trouble with a drive motor due to heat and pressure by preventing heat and pressure from being transmitted from a rotating shaft side to a drive motor side even if fluid is hot, wherein fluid sucked from a suction port (13) is discharged from a discharge port (14) by the rotation of an impeller (2), driven side permanent magnets (4) are fitted to the rotating shaft (21) of the impeller, drive side permanent magnets (5) are fitted to a drive shaft (motor shaft (31) of the motor (3)) for rotating the rotating shaft, and the drive side permanent magnets and the driven side permanent magnets are opposed to each other, in the state of non-contact with each other, through non-magnetic substance.

Description

TECHNICAL FIELD A fluid feeder and a tire vulcanizer using the fluid feeder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid feeder for transferring and circulating a fluid (steam, gas, liquid) through a pipeline, and a tire vulcanizing device using the fluid feeder.

2. Description of the Related Art Conventionally, there are various types of fluid feeders, such as a pump and a blower, in which an impeller is rotated by a drive motor to discharge fluid sucked from a suction port through a discharge port.

However, in such a conventional fluid feeder, since the rotating shaft of the impeller is connected to the motor shaft of the drive motor, especially when the fluid has a high temperature and a high pressure (for example, a high temperature and a high pressure steam), The heat and pressure are transmitted from the rotating shaft to the drive motor side, causing a problem with the drive motor.

In addition, the tire vulcanizer has upper and lower dies, and a bladder that expands and contracts by supplying and discharging steam (heating fluid). The steam is supplied to the inner surface of the raw tire set inside the dies to expand the tire. In this case, a technique has been proposed in which the steam supplied to expand the bladder is circulated in a closed circuit to eliminate the temperature difference in the bladder.

For example, in the technology described in Japanese Patent Application Laid-Open No. Sho 62-33631, a steam supply pipe and a steam discharge pipe connected to the inside of the bladder and a communication that connects the steam supply pipe and the steam pipe are connected. An external circulation circuit is formed with the pipe, and a pump is disposed in the communication pipe, a suction valve is provided on a suction side of the pump, and a discharge valve is provided on a discharge side. The valve is provided with a valve.

However, in such a method in which the steam sent by the pump is circulated by switching between the suction valve and the discharge valve, the steam pressure pulsates, causing a pressure change in the bladder, and the bladder is pressed at a constant pressure on the raw tire. It deviates from the basic condition of evening vulcanization of pressing against the inner surface of the steel.

Also, there is a technique using a jet pump as a pump as in the technique disclosed in Japanese Utility Model Application Laid-Open No. 5-13713.However, since the pressure inside the bladder must be reduced, the pressure change Will happen.

Further, in the technology described in Japanese Patent Application Laid-Open Nos. 57-138390 and 59-159587, the steam circulation device is provided at the center of the bladder. It is installed in the mechanism.

If the steam circulation device is installed in the central mechanism in the bladder, the structure becomes very complicated, the cost increases, and maintenance (disassembly and assembly) becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems. By making the rotating shaft of the impeller non-contact with the motor shaft of the driving motor, the fluid has a high temperature. Even if the heat and pressure are not transmitted from the rotating shaft side to the drive motor side, the first task is to provide a fluid feeder that can eliminate the trouble of the drive motor due to heat and pressure. .

It is a second object of the present invention to provide a fluid feeder that can rotate the impeller by direct drive using a drive motor while keeping the rotation shaft of the impeller out of contact.

Also, in the tire vulcanizer, the heating fluid supplied to inflate the bladder can be circulated without pressure pulsation, and can be easily retrofitted to the existing piping system. The central mechanism in the bladder A third object is to provide a tire vulcanizing apparatus that can circulate the heating fluid with a simple structure without any modification and eliminate the temperature difference in the bladder. Disclosure of the invention

In order to solve the first problem, a fluid feeder according to the present invention (claim 1) is a fluid feeder configured to discharge fluid sucked from a suction port from a discharge port by rotation of an impeller. A driven permanent magnet is attached to a rotating shaft of the impeller, and a driving permanent magnet is attached to a driving shaft for rotating the rotating shaft. The driving permanent magnet and the driven permanent magnet are attached to each other. The configuration is such that they are arranged to face each other in a non-contact state via a non-magnetic or weak magnetic substance.

In the fluid feeder (Claim 1), the driving-side permanent magnet and the driven-side permanent magnet are disposed so as to face each other in a radial direction or a thrust direction in a non-contact state via a non-magnetic material or a weak magnetic material. (Claim 2). In order to solve the second problem, a fluid feeder according to the present invention (claim 3) is a fluid feeder configured to discharge a fluid sucked from a suction port from a discharge port by rotation of an impeller. A driven-side permanent magnet is attached to the rotating shaft of the impeller, and a plurality of coils are disposed on the driven-side permanent magnet so as to face the non-contact state via a non-magnetic material or a weak magnetic material; The plurality of coils are used as a staying coil of a drive motor for rotating the rotating shaft, and the rotating shaft is also used as a drive motor rotating shaft.

In the fluid feeder (Claims 1 to 3), there is a mode (Claim 4) in which the non-magnetic material or the weak magnetic material is formed on a partition member that partitions a rotation shaft side and a drive shaft side.

In order to solve the third problem, a tire vulcanizing apparatus according to the present invention (claim 5) is provided. Is

A tire vulcanizer using the fluid feeder according to any one of claims 1 to 4, comprising: upper and lower dies; and a bladder that expands and contracts by supplying and discharging a heating fluid. In a tire vulcanizing apparatus in which a bladder expanded by supplying a heating fluid is pressed against an inner surface of a raw tire set therein, a fluid supply pipe and a fluid discharge pipe connected to the inside of the bladder; An external circulation circuit is formed by a communication pipe that connects the supply pipe and the fluid discharge pipe, and the fluid feeder is disposed in the middle of the external circulation circuit. In the tire vulcanizing device (Claim 5), there is a mode (Claim 6) in which the fluid feeder and the heating device are arranged in the middle of the external circulation circuit. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a sectional view showing a fluid feeder according to a first embodiment of the present invention.

FIG. 2 is a front view showing an impeller of the fluid feeder.

FIG. 3 is a sectional view showing a fluid feeder according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a fluid feeder according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a fluid feeder according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a fluid feeder according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing a fluid feeder according to a sixth embodiment of the present invention.

FIG. 8 is a schematic sectional view showing an embodiment of the tire vulcanizing apparatus of the present invention.

FIG. 9 is a schematic sectional view showing an embodiment of the tire vulcanizing apparatus of the present invention.

FIG. 10 is a schematic sectional view showing an embodiment of the tire vulcanizing apparatus of the present invention.

FIG. 11 is a schematic sectional view showing an embodiment of the tire vulcanizing apparatus of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. The specific configuration of the present invention is not limited to the following embodiments.

FIG. 1 is a sectional view of a fluid feeder according to a first embodiment of the present invention, and FIG. 2 is a front view showing an impeller of the fluid feeder.

In the figure, reference numeral 1 denotes a casing, in which a fluid feed chamber 11 and a drive unit accommodation chamber 12 are formed.

In the casing 1, a suction port 13 is formed in a central portion, and a discharge port 14 is formed in an outer periphery. The suction port 13 and the discharge port 14 are communicated with the fluid feed chamber 11 .

Inside the casing 1, a non-magnetic material (titanium, stainless steel, plastic, aluminum, ceramic, etc. or a composite material containing them) or a weak magnetic material (titanium, stainless steel, aluminum, etc., or a composite material containing them) The partition member 15 formed of the material is attached.

The partition member 15 is formed in a cup shape that partitions the drive unit housing space 12 into the rotating shaft side 21 of the impeller 2 and the motor shaft 31 (drive shaft) of the drive motor 3.

An impeller 2 using a plate fan is disposed in the fluid feed space 11, and a rotating shaft 21 of the impeller 2 is rotatably supported on an inner surface of the partition member 15. '

Therefore, the impeller 2 and the rotary shaft 21 are sealed by the partition member 15 on the fluid feed space 11 side.

A drive motor 3 is attached to the rear end of the casing 1, and a cylindrical rotating body 32 is attached to a motor shaft 31 (drive shaft) of the drive motor 3. The cylindrical rotating body 32 is supported by the outer surface of the partition member 15.

When the driven permanent magnet 4 is attached to the outer periphery of the rotating shaft 21, In addition, a drive-side permanent magnet 5 is attached to the inner periphery of the cylindrical rotating body 32, and the drive-side permanent magnet 5 and the driven-side permanent magnet 4 are partitioned by a non-magnetic material or a weak magnetic material. They are arranged so as to face each other in the radial direction in a non-contact state via 5.

A blade 33 protrudes from the outer periphery of the cylindrical rotating body 32, and the air in the casing 1 is exhausted by the rotation of the blade 33 accompanying the rotation of the cylindrical rotating body 32. From the exhaust.

In the fluid feeder A configured as described above, when the drive motor 3 is driven, the cylindrical rotating body 32 attached to the motor shaft 31 rotates with the drive-side permanent magnet 5.

Since the drive-side permanent magnet 5 and the driven-side permanent magnet 4 attached to the rotating shaft 21 are opposed in the radial direction, the driven-side permanent magnet 4 is driven by the attraction of the two permanent magnets 4 and 5. The permanent magnet 5 rotates. As a result, the rotating shaft 21 rotates with the impeller 2, and the rotation of the impeller 2 sucks fluid from the suction port 13 into the fluid feed space 11 and discharges the sucked fluid into the discharge port 14. Can be discharged from

In this case, since the suction and discharge of the fluid are performed by the impeller 2, the suction and discharge of the fluid can be performed continuously without pulsation.

Further, since the drive-side permanent magnet 5 and the driven-side permanent magnet 4 are radially opposed to each other in a non-contact state via a partition member 15 as a non-magnetic material or a weak magnetic material, the rotating shaft 2 No heat is transmitted from 1 to the motor shaft 31.

In addition, since the rotating shaft 21 and the motor shaft 31 are completely separated by the partition member 15, the rotating shaft 21 is in a sealed state, and the pressure resistance can be improved.

Next, FIG. 3 is a sectional view of a fluid feeder according to a second embodiment of the present invention. In the fluid feeder B, a driven permanent magnet 4 is attached to the inner periphery of a cylindrical body 22 attached to a rotating shaft 21 of an impeller 2, while a motor shaft 3 1 ( A drive-side permanent magnet 5 is attached to the outer periphery of the drive shaft).

The drive-side permanent magnet 5 and the driven-side permanent magnet 4 are arranged so as to face each other in a radial direction in a non-contact state via a partition member 15 as a non-magnetic material or a weak magnetic material. Following the drive in evening 3, the driven permanent magnets 4 are linked to the driven permanent magnets 5 and rotated by the inquiries of the two permanent magnets 4 and 5.

Since other configurations and operations are the same as those of the first embodiment, the same reference numerals in the drawings denote the same parts, and a description thereof will be omitted.

This fluid feeder C is provided with left and right fluid feeders 10, 10 sharing the rotary shaft 21 by attaching impellers 2, 2 on the left and right of the rotary shaft 21. The driven-side permanent magnet 4 is attached to the outer periphery of 21.

A partition member 15 as a non-magnetic or weak magnetic material is attached so as to surround the outer periphery of the rotary shaft 21. A belt pulley 31 a (drive shaft) is mounted on the outer periphery of the partition member 15. A drive-side permanent magnet 5 is attached to the inner periphery of the belt pulley 31a, and is rotatably supported. The drive-side permanent magnet 5 and the driven-side permanent magnet 4 form the partition member 15 In the radial direction in a non-contacting state.

The belt pulley 31a is driven to rotate by a belt 31c wound around the belt pulley 31 of the driving motor 3.

Therefore, when the drive motor 3 is driven, the fluid feeder C rotates the belt pulley 31 a as a drive shaft with the drive-side permanent magnet 5 due to the transmission of rotational power by the belt 31 c. .

Then, the driven permanent magnet 4 is linked to the drive permanent magnet 5 and rotates. this As a result, the rotating shaft 21 rotates with the left and right impellers 2, 2, and the rotation of the impellers 2, 2 causes the left and right fluid feed portions 10, 10 to send the fluid from the suction port 13, respectively. The fluid can be sucked into the space 11 and the sucked fluid can be discharged from the outlet 14.

Next, FIG. 5 is a sectional view showing a fluid feeder according to a fourth embodiment of the present invention. In the fluid feeder D, the driven permanent magnet 4 attached to the rotating shaft 21 of the impeller 2 and the drive permanent magnet 5 attached to the motor shaft 31 (drive shaft) of the drive motor 3 are: They face each other in the thrust direction in a non-contact state via a partition member 15 as a nonmagnetic material or a weak magnetic material.

Next, FIG. 6 is a sectional view showing a fluid feeder according to a fifth embodiment of the present invention. In the fluid feeder E, a plurality of coils 6 are provided in a non-contact manner around a driven permanent magnet 4 attached to the rotating shaft 21 of the impeller 2 via a partition member 15 as a non-magnetic or weak magnetic material. They are arranged to face each other in the state.

The plurality of coils 6 are used as a staying coil of the drive motor 3a, and the rotating shaft 21 is also used as a mouth of the drive motor 3a. The drive motor 3a is formed as a DC motor whose magnetic poles are switched by a commutator (not shown).

Therefore, when a current is applied to the coil 6, the magnetic pole of the coil 6 and the magnetic pole of the driven-side permanent magnet 4 repeatedly attract and repel through the commutator, and the rotating shaft 21 that is also used as the rotor is directly driven ( (Direct drive) to rotate the impeller 2. As a result, the drive system can be simplified. You.

Next, FIG. 7 is a schematic view showing a fluid feeder according to a sixth embodiment of the present invention. In the fluid feeder F, a driven permanent magnet 4 is mounted on the inner circumference of a cylindrical rotating body 22 mounted on the rotating shaft 21 of the impeller 2, and a plurality of coils are mounted on the inner circumference of the driven permanent magnet 4. 6 are disposed so as to face each other in a non-contact state via a partition member 15 as a non-magnetic material or a weak magnetic material.

The plurality of coils 6 are used as a staying coil of the drive motor 3a, and the rotary shaft 21 has a direct drive (direct drive) structure also used as a rotor of the drive motor 3a. I have.

In the fluid feeder of the present invention, an axial fan, a sirocco fan, an evening fan, or the like can be used as the impeller in addition to the plate fan.

The fluid to be sent may be steam, gas, or liquid, and the installation target may be installed in the middle of a pipeline to transfer fluid, or may be installed in a circulation pipeline. And can be used for fluid circulation.

In addition, because the rotating shaft rotates in a non-contact manner, the rotating shaft may lose synchronism due to slippage. It can be detected by value. Of course, the step-out of the rotating shaft can be detected by using a normal proximity sensor or a magnetic sensor.

Next, FIG. 8 is a schematic sectional view showing an embodiment of a tire vulcanizing apparatus using the fluid feeder A (shown in FIG. 1) of the first embodiment. The tire vulcanizing apparatus G includes upper and lower dies 7, 7 and a bladder 70 that expands and contracts by supplying and discharging the heating fluid. The inner surface of a raw tire T set inside the dies 7, 7 Then, the bladder 70 expanded by the supply of the heating fluid (high-temperature and high-pressure steam) is pressed to perform vulcanization molding while holding the green tire T.

Inside the bladder 70, a fluid supply pipe 8a provided with an on-off valve 80 and a fluid discharge pipe 8b provided with an on-off valve 81 are connected. Also at the position closer to the bladder 70, the fluid supply pipe 8a and the fluid discharge pipe 8b are connected by a communication pipe 8c, and external circulation is performed by the communication pipe 8c, the fluid supply pipe 8a, and the fluid discharge pipe 8b. Circuit 8 is formed. Therefore, a closed circulation circuit is formed between the external circulation circuit 8 and the inside of the bladder 70. The on-off valve 82 is also provided on the communication pipe 8c.

The fluid feeder A is provided in the middle of the external circulation circuit 8. In this embodiment, the fluid feeder A is provided in the middle of the fluid supply pipe 8a. 13 is connected to the on-off valve 80 side, and the discharge port 14 is connected to the bladder 70 side.

Further, in the external circulation circuit 8, a heating device 9 is provided in the fluid discharge pipe 8b.

A steam jacket or an electric heating heater is used for the heating device 9. The heating device 9 heats a heating fluid in a closed circulation circuit formed by the external circulation circuit 8 and the inside of the bladder 70. To prevent the temperature and pressure of the heated fluid from dropping. The mounting position of the heating device 9 may be anywhere in the external circulation circuit 8.

Therefore, when the open / close valves 80, 81 are opened with the raw tire T set in the molds 7, 7, and the heating fluid is supplied from the fluid supply pipe 8a, the bladder 70 The heating fluid flows into the inside, and the on-off valves 80 and 81 are closed in a state where the inside of the bladder 70 is filled with the heating fluid.

At this time, since the fluid feeder A is disposed in the fluid supply pipe 8a, the operation of the fluid feeder A allows the heated fluid to flow into the bladder 170 smoothly and quickly.

After filling the inside of the bladder 70 with the heating fluid as described above, the on-off valve 82 of the communication pipe 8c is opened, the external circulation circuit 8 is opened, and the bladder 70 is circulated with the inside. A closed circuit is formed.

In this state, the fluid feeder A is operated to circulate the heating fluid in the closed circulation circuit by the rotation of the impeller 2, and the circulation of the heating fluid eliminates the temperature difference in the bladder 70. be able to.

In particular, since the fluid feeder A performs the suction and discharge of the heating fluid by the impeller 2 as described above, the suction and discharge of the fluid can be performed continuously without pulsation, The pressure change in the bladder 70 can be prevented. Thus, the basic condition of tire vulcanization of pressing the bladder 70 against the inner surface of the green tire T with a constant pressure can be secured.

As described above, the green tire T is vulcanized while circulating the heating fluid. After the vulcanization molding is completed, the on-off valve 81 is opened, and the on-off valves 80 and 82 are closed to operate the fluid feeder A, whereby the bladder 70 is opened. The heating fluid filled inside can be discharged from the fluid discharge pipe 8b.

Next, FIG. 9 is a piping diagram showing a main part of an embodiment of the tire vulcanizing apparatus.

The tire vulcanizing apparatus H is an example in which a fluid feeder A (shown in FIG. 1) is disposed in a fluid discharge pipe 8b, and an inlet 13 of the fluid feeder A is connected to a bladder 70 side. The discharge port 14 is connected to the on-off valve 81 side. This makes it possible to discharge the heating fluid from inside the bladder 170 smoothly and quickly.

Since other configurations and operations are the same as those of the embodiment of FIG. 8, the same reference numerals are used for the drawings, and description thereof will be omitted.

Next, FIG. 10 is a piping diagram showing a main part of an embodiment of the tire vulcanizing apparatus.

The tire vulcanizing apparatus J is an example using the fluid feeder C (shown in FIG. 4), in which one fluid feeder 10 is disposed in a fluid supply pipe 8a, and the other fluid feeder 10 is provided. Is disposed in the fluid discharge pipe 8b.

Thereby, the circulation of the heating fluid in the closed circulation circuit, and the supply to the bladder 70 and the discharge from the bladder 70 can be performed more smoothly and quickly. Since other configurations and operations are the same as those of the embodiment of FIG. 8, the same reference numerals are used for the drawings, and description thereof will be omitted.

Next, FIG. 11 is a piping diagram showing a main part of an embodiment of the tire vulcanizing apparatus.

This tire vulcanizing apparatus K is an example in which a fluid feeder A (shown in FIG. 1) is disposed in a communication pipe 8c, and an inlet 13 of the fluid feeder A is connected to a fluid discharge pipe 8b side. The discharge port 14 is connected to the fluid supply pipe 8a.

Further, a second discharge pipe 8d is branched and piped between the on-off valve 80 and the communication pipe connection portion 83 in the fluid supply pipe 8a, and an on-off valve 84 is provided in the second discharge pipe 8d. Have been.

Therefore, when the heating fluid is circulated in the closed circuit, the on-off valve 82 is opened, and the on-off valves 80, 81, 84 are closed, and the fluid feeder A is operated. When supplying the heating fluid to the bladder 70, the on-off valves 80, 81 are opened, and the on-off valves 82, 84 are closed, and the fluid feeder A is not operated. When the heating fluid is discharged from the bladder 70, the on-off valves 81, 82, 84 are opened, the on-off valve 80 is closed, and the fluid feeder A is operated. 3 Thereby, the fluid can be discharged from both the fluid discharge pipe 8b and the second discharge pipe 8d, and the discharge from the bladder 170 can be performed more smoothly and quickly. The mounting direction of the fluid feeder A is, as shown in the illustrated example, a direction in which the heating fluid is circulated in the order of the fluid supply pipe 8a—the bladder 70 → the fluid discharge pipe 8b → the communication pipe 8c. The fluid discharge pipe 8b → the bladder 70 → the fluid supply pipe 8a → the communication pipe 8c can be mounted in the direction of circulation.

Since other configurations and operations are the same as those of the embodiment of FIG. 8, the same reference numerals are used for the drawings, and description thereof will be omitted. Industrial applicability

As described above, in the fluid feeder (Claim 1 or 2) of the present invention, since the rotating shaft of the impeller is not in contact with the motor shaft of the driving motor, the fluid is heated at a high temperature. Even if there is, the heat is not transmitted from the rotating shaft side to the drive motor side, and the trouble of the drive motor due to the heat can be solved.

Further, in the fluid feeder of the present invention (claim 3), the impeller can be rotated by a direct drive by a driving motor while the rotating shaft of the impeller is kept out of contact, so that the fluid is Even if the temperature is high, the heat is not transmitted from the rotating shaft side to the drive motor side, and the structure can be simplified.

Further, in the fluid feeder of the present invention (claim 4), since the non-magnetic material is formed on the partition member that partitions the rotary shaft side and the motor shaft side, the rotary shaft side has a sealed structure. And the pressure resistance performance can be improved.

Further, in the tire vulcanizing apparatus of the present invention (claim 5), the heating element supplied for inflating the bladder is circulated without pressure pulsation, so that the temperature difference within the bladder 1 Pressure fluctuation can be eliminated.

In addition, since it has an external circulation path, it can be easily retrofitted to existing piping systems. 4 It can be attached easily and can be a simple structure without any modification to the central mechanism in the bladder.

Further, in the tire vulcanizing machine of the present invention (claim 6), the heating device can heat the heating fluid in the closed circulation circuit, so that the temperature and pressure of the heating fluid decrease. Can be prevented.

Claims

5 Claims

1. A fluid feeder in which a fluid sucked from a suction port is discharged from a discharge port by rotation of an impeller, wherein a driven-side permanent magnet is attached to a rotation shaft of the impeller to rotate the rotation shaft. A drive-side permanent magnet is attached to a drive shaft for the drive, and the drive-side permanent magnet and the driven-side permanent magnet are arranged so as to face each other in a non-contact state via a non-magnetic material or a weak magnetic material. A fluid feeder.

2. The fluid feeder according to claim 1, wherein the drive-side permanent magnet and the driven-side permanent magnet face each other in a radial direction or a thrust direction in a non-contact state via a non-magnetic material or a weak magnetic material. Fluid feeder provided.

3. A fluid feeder in which a fluid sucked from a suction port is discharged from a discharge port by rotation of an impeller, wherein a driven-side permanent magnet is attached to a rotating shaft of the impeller, and the driven-side permanent magnet is A plurality of coils are disposed so as to face each other in a non-contact state via a non-magnetic material or a weak magnetic material, and the plurality of coils are used as a staying coil of a drive motor for rotating the rotation shaft. A fluid feeder, wherein the rotary shaft is also used as a drive motor outlet.

4. The fluid feeder according to any one of claims 1 to 3, wherein the non-magnetic material or the weak magnetic material is formed on a partition member that partitions a rotation shaft side and a drive shaft side.

5. A tire vulcanizing apparatus using the fluid feeder according to any one of claims 1 to 4, comprising upper and lower dies, and a bladder that expands and contracts by supplying and discharging a heating fluid, wherein the dies are provided. The tire vulcanizer that presses the bladder expanded by the supply of the heating fluid against the inner surface of the raw tire set inside the tire An external circulation circuit is formed by a fluid supply pipe and a fluid discharge pipe connected to the inside of the bladder, and a communication pipe communicating the fluid supply pipe and the fluid discharge pipe. A tire vulcanizing device characterized in that a feeding device is provided.

6. The tire vulcanizing apparatus according to claim 5, wherein the fluid feeding device and the heating device are arranged in the middle of the external circulation circuit.