JPH0733025B2 - Tire vulcanizing press - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tire vulcanizing press.

(Prior Art) A tire vulcanizing press includes an upper mold element and a lower mold element that can be opened and closed mutually, and an elastic molded body that can expand and contract the inner surface shape of a green tire loaded in the mold element. It is shaped and vulcanized while being shaped via a heat and pressure medium enclosed therein.

Until now, in this tire vulcanizing press, it was common to place the green tire on the lower mold element, but this may cause the green tire to deform into a flat shape due to its own weight. It was

Therefore, as disclosed in Japanese Patent Laid-Open No. Sho 60-36111, the green tire loaded in the mold element is held by a rubber bag and held in a suspended state, and before shaping. There is a technique for press-fitting a pressurized fluid for inflating the green tire with the upper and lower bead portions of the green tire attached to the upper and lower bead rings of the mold element to accurately position the green tire and the mold element.

(Problems to be Solved by the Invention) By the way, the conventional technique described in the above publication is to hold the green tire in a suspended state, that is, to suspend the green tire. For hanging, a rubber bag is provided at the center of the upper mold element.

Therefore, there is a problem that the rubber bag is exposed to a high temperature inside the mold element, and the life of the rubber bag is extremely shortened.

Further, in the prior art, a filling plate for supplying a pressurized fluid for tire inflation is projected below a rubber bag for hanging a tire, and this projection is an elastic molded body from below. However, there is a problem in terms of accurate shaping, and there is a problem in that the durability of the elastic molded body is reduced.

The present invention uses a mechanical link with a plurality of sectors that can be opened and closed in the radial direction as a means for grasping the upper bead of a green tire loaded in a mold element and suspending it in a hanging manner. , Even if the sector link is adopted,
It is an object to provide an improved tire vulcanizing press which does not obstruct the elastic molding for shaping.

(Means for Solving the Problem) The present invention includes a link 25B that includes an upper mold element 4 and a lower mold element 1 that can be opened and closed with respect to each other, and is vertically extended to the upper mold element 4 side.
And a plurality of sectors 25, each of which is composed of a portion 25C having a partial circular shape that is radially outward from the lower end side of the link 25B, are provided in a radial arrangement so as to be freely changeable between an open position and a closed position,
The green tire T can be loaded into the mold elements 1 and 4 by gripping the upper bead T1 of the green tire T through the sector 25, and the inner surface shape of the green tire T loaded into the mold elements 1 and 4 In the tire vulcanizing press for shaping and vulcanizing the elastic molded body 8 which can be expanded and contracted and the heat and pressure medium enclosed therein, the following technical means have been taken to achieve the above-mentioned object.

That is, according to the present invention, an inner cylinder 16 having a bead ring 18 which is a part of the mold element 4 on the lower bottom side is provided on the upper mold element 4 side so as to be able to move up and down relatively. A sector housing 21 that holds the sector 25 between the open position and the closed position is provided so as to be able to move up and down relatively, and the upper bead T1 of the green tire T has a bead ring 18 provided on the inner cylinder 16 and a partial circle of the sector 25. It can be sandwiched by a portion 25C having a circular shape, and further, a circular portion 25C of the closed sector 25 can be accommodated on the lower bottom side of the inner cylinder 16, and further elastic during vulcanization. A ring fitting portion 25G for receiving the upper mounting ring 9 of the molded body 8 and holding the same is provided.

Further, according to the present invention, the filler ring 46 is attached to the lower end side of the center housing 21, and the partially circular portion 25C of the closed sector 25 is accommodated on the filler ring 46, and further, the upper portion of the green tire T. The part 25C, which is a circular part of the sector 25 for gripping the bead T1, has a filler ring 46.
The filler ring 46 is positioned below the portion 25C so that the filler ring 46 can be extended more radially outward.
The ring fitting portion 25G is formed on the lower surface side of the. In addition, the present invention guides the position change between the open position and the closed position of the sector 25 on the joint surface between the part 25C having the partially circular shape of the sector 25 and the filler ring 46,
It is characterized in that a concavo-convex means 47 for preventing the elastic molded body 8 from entering is provided between the open position portion 25C and the filler ring 46.

(Examples and Operations) In the drawings, reference numeral 1 denotes a lower mold element, which is configured by providing a lower mold 3 on a lower platen 2 having a built-in vulcanization source.

Reference numeral 4 is an upper mold element, and an upper platen 5 having a built-in heating source.
The upper mold 6 is provided on the above.

In this embodiment, the upper mold element 4 can be tilted or vertically moved with respect to the lower mold element 1 to perform mold clamping and mold opening, and the upper and lower mold elements 1 and 4 are provided so as to be openable and closable with respect to each other.
When the molds are clamped as shown in FIG. 14, the molds are molded to form the outer shape of the green tire T having the upper bead T1 and the lower bead T2 which are shaped by fitting the lower mold 3 and the upper mold 6 to each other. In addition to modeling, heating pressure medium such as steam can be supplied from the outer peripheral areas of the upper and lower molds 3 and 6.

A central mechanism 7 is provided as a concentric core on the center of the mold on the side of the lower mold element 1, and has a bladder such as a flexible rubber bag on the upper part thereof, that is, an elastic molding pair 8 on the inner surface of the tire and an upper mounting ring 9. And the lower mounting ring 10 (see FIG. 5).

A pressure medium such as steam of ² to 3 kg / cm ² can be radially supplied from the lower region of the molded body 8 into the male molded body 8 of the central mechanism 7 during shaping. During vulcanization, the pressure medium can be pressurized to, for example, about 21 kg / cm ² (temperature is about 180 ° C.), and after vulcanization, the pressure medium can be drained.

Further, in the central mechanism 7, a cylindrical body 13 having a lower bead ring 12 forming a part of the lower mold 3 at the top is vertically inserted into a fixed guide cylinder 11 provided vertically on the lower mold element 1 side. The upper and lower attachment rings 9 and 10 are relatively moved up and down in the cylindrical body 13 to allow the elastic molded body 8 to expand and contract.

In FIGS. 1, 3, and 4, reference numeral 14 is an upper guide cylinder, which is vertically fixed to the upper platen 5, and an outer cylinder (outer cylinder) 15 is vertically inserted into the upper guide cylinder 14. ing.

Reference numeral 16 is an inner cylinder (inner cylinder), which is vertically inserted into the outer cylinder 15 and includes a canopy portion 16A and a tubular portion 16B.
A guide groove 16C that is long in the up-down direction (vertical direction) is formed on the outer periphery of B, and a guide shoe 15A attached to the outer cylinder 15 is engaged with the guide groove 16C.

Reference numeral 17 denotes an inner cylinder lifting / lowering drive body, which is composed of a fluid cylinder 17A provided upright on the canopy portion of the outer cylinder 15 and a piston rod 17B extending from a piston fitted to the cylinder 17A. The end (lower end) of the rod 17B is connected to the canopy portion 16A of the inner cylinder 16.

Therefore, the inner cylinder 16 is lifted and lowered by the expansion and contraction operation of the lift driver 17.
The driving bodies 17 are provided in pairs at diagonal positions as shown in FIG.

Reference numeral 18 denotes an upper bead ring, which constitutes a part of the upper mold 6, and is provided at the lower end (lower bottom) side of the tubular portion 16B of the inner cylinder 16 so as to be detachably fixed by a screw structure or the like. A sector restriction ring 19 is fixed to the upper position of the ring 18 with a screw 20 or the like.

Therefore, the upper bead ring 18 fits into the annular recess 6A of the upper mold 6 so as to form a part of the upper mold 6 by the raising and lowering of the inner cylinder 16, and can be detached below the recess 6A of the upper mold 6. Has been done.

Reference numeral 21 denotes a sector housing, which is composed of a canopy portion 21A and a tubular portion 21B, is fitted and inserted into the inner barrel 16, and can be relatively moved up and down via a slide bush 22 and the like.

Reference numeral 23 denotes an elevator drive body for the sector housing, and as shown in FIG. 6, it is provided as a pair with the inner cylinder elevator drive body 17 being 90 ° out of phase with each other. Part 16
Fluid cylinder 23A mounted on the A side and the cylinder 23
Piston rod 2 extended from the piston fitted to A
3B, the end of the rod 23B is connected to the canopy portion 21A of the sector housing 21.

Therefore, the sector housing 21 can be relatively moved up and down in the inner cylinder 16 through the expansion / contraction operation of the lift drive member 23.

24 is a sector attachment, which is the canopy of the sector housing 21.
The ring-shaped seating portion 24A is fitted to the central portion on the lower end surface of 21A, and is detachably fixed by a bolt or the like (not shown). Below the ring-shaped seating portion 24A, the phase is 9
Legs 24B, which are shifted by 0 °, are extended (see FIG. 7).

Reference numeral 25 denotes a sector. As shown in FIG. 8, a flat circular link 25B having an arm 25A is provided with a portion 25C, which is a partial circle in a plan view, in a substantially horizontal direction and a radially outward direction by a bolt 26 or the like. It is extended so as to project.

The plate-like link 25B has a mounting hole 25E in its boss portion 25D and extends vertically, and has a so-called "goose neck" shape as is apparent from FIG. It has a mounting hole 25F.

Further, the portion 25C has a so-called "sickle shape" as shown in FIG. 7, and the ring fitting portion 25G is provided on the lower bottom surface side of the portion 25C.
Are formed.

The sector 25 is rotatably supported around the axis of the fulcrum shaft 27 by inserting the fulcrum shaft 27 into the leg portion 24B of the sector fixture 24 and the mounting hole 25E, and the arm 25A of the sector 25 is ring-shaped. Seat 2
Inner cylinder 1 with link 25B arranged as the circumscribing direction with respect to 4A
It is housed in 6 and vertically extended downward, and further, the portion 25C can be opened and closed around the fulcrum shaft 27 in the open position and the closed position, and in the closed position, the lower bottom side of the inner cylinder 16 In the open position, each portion 25C is formed into a substantially perfect circular shape and is radially expanded to allow the upper bead T1 of the green tire T to be engaged in the radial direction. (See FIGS. 4 and 7).

Reference numeral 28 denotes a sector opening / closing mechanism, which includes an inner tube 29, an outer tube 30, a guide tube 31, and the like. The tubes 29, 30, and 31 are provided on the upper die element side at the center of the die element with a common axis. .

The guide tube 31 is erected on the canopy portion 16A of the inner cylinder 16 and has a stopper 31A on the top thereof. The outer tube 30 is inserted into the guide tube 31, and the lower end thereof is erected on the canopy portion 21A of the sector housing 21, and both tubes 30,
Reference numeral 31 is relatively movable up and down, and a fluid cylinder 33 is provided above the outer tube 30 via a mounting base 32.

Further, the inner tube 29 is inserted into the outer tube 30 so as to penetrate the sector attachment 24, a cam ring 36 having a peripheral groove 35 formed between the upper and lower flanges 34 is attached to the lower end, and a feed ring is attached to the upper end. The piston rod 33A of the fluid cylinder 33 is connected via the air elbow 37, the air feeding pipe 38 of the pressurized fluid (air) is communicated with the air feeding elbow 37, and the inner tube 29
The pressurized fluid can be fed into the mold elements 1 and 4 from its lower end via the.

As shown in FIG. 7, a cam roller is provided in the circumferential groove 35 of the karim ring 36.
39 is fitted, and the cam roller 39 is mounted by inserting the roller support shaft 40 into the mounting hole 25F of the arm 25A in each sector 25.

Therefore, each sector 25 is vertically movable together with the sector housing 21, and the inner tube 30 is vertically moved by the expansion and contraction operation of the fluid cylinder 33.
The cam roller 39 and the circumferential groove 35 are engaged with each other so that the cam roller 39 can swing (open and close) around the fulcrum shaft 27.

Note that reference numeral 41 is a stroke adjuster, and the stroke of the sector housing 21 can be adjusted by contacting the stopper 31A.

Reference numeral 42 is a carrying member for the green tire T, and 43 is an upper dome.

FIGS. 16 to 20 show a second embodiment which is an improvement of the first embodiment described above. Since the basic structure and the operation are common to those of the first embodiment, common parts are indicated by common symbols, and The differences will be mainly described.

16 and 17, the sector attachment 24 is formed on the inner peripheral surface of the cylindrical portion 21B of the sector housing 21, and the sector 2 is attached to the sector attachment 24 via the fulcrum shaft 27, the bush 27A, and the like.
The upper part of 5 is swingably supported, and the cam roller 39 provided in each sector 25 is fitted in the circumferential groove 35 of the cam ring 36.

In this example, four legs 21C are extended downward from the lower end of the tubular portion 21B in the sector housing 21 in a radial arrangement in a plan view, and bolts 45 are screwed from below into screw holes 44 formed in each leg 21C. , The filler ring 46 is attached to the lower end side of the sector housing 21, and the filler ring
46 is fitted on the inner peripheral surface of the inner cylinder 16 so as to be vertically movable.

The outer surface of the filler ring 46 is mirror-finished by chrome plating or the like, and the lower surface of the ring 46 is
A ring fitting portion 25G for receiving and holding the upper mounting ring 9 having the elastic molded body 8 is formed.

Further, at the position where the partial circular portion 25C of each sector 25 is closed, the portion 25C is placed on the filler ring 46, and the filler ring 46 is positioned below the portion 25C, and the elastic molded body 8 is formed. Directly contacts the part 25C,
Block with the filler ring 46, here the filler ring 46
Has a protector function.

Between the joint surface of the portion 25C and the filler ring 46, the uneven means 47 is provided, the uneven means 47 is formed as a direction to guide the opening and closing direction of the portion 25C, in the present embodiment the lower surface of the portion 25C. The tooth-shaped uneven line 47A formed on the upper surface of the filler ring 46 and the tooth-shaped uneven line 47B formed on the upper surface of the filler ring 46, and the both uneven lines 47A and 47B can be occlusably separated from each other.

Here, the concavo-convex means 47 serves to prevent the elastic molded body 8 from entering and getting caught by making the gap 48 between the portion 25C and the upper surface of the filler ring 46 as small as possible as shown in FIG. However, it will be clarified by the operation described later.

21 and 22 show a third embodiment of the present invention which is different from the above-mentioned second embodiment in that the uneven means 47 is not formed between the portion 25C and the filler ring 46. Three
Also in the embodiment and the second embodiment, the filler ring is used.
From the viewpoint of suppressing the sliding contact resistance (friction) with the elastic molded body 8 and preventing the elastic molded body 8 from being scratched by the sliding contact,
The corners are rounded so that the pressing is soft.

Next, the series of operations of the first embodiment of the present invention will be described with reference to FIGS. 9 to 15, and the operations of the second and third embodiments will also be described.

FIG. 9 shows that the upper mold element 4 and the lower mold element 1 are opened, the upper bead ring 18 and the lower bead ring 12 are fitted to the respective molds 6 and 3, and the sector 25 is in the closed position. The circular portion 25C is housed in the inner cylinder 16, and the central mechanism 7 is on standby.

In this state, the green tire T is loaded by the loading member 42 into the mold elements 4 and 1 so as to be substantially concentric.

When the green tire T is loaded into the mold elements 4 and 1, the inner cylinder 1
6 is lowered through the extension operation of the driving body 17, the upper bead ring 18 is separated from the recess 6A of the upper mold 6, and the upper bead ring 18 is moved to the upper bead T1 of the green tire T.
The tire T is suspended and prepared for suspension here.

The lowering of the inner cylinder 16 is ensured in the vertical direction by the guide shoe 15A and the guide groove 16C.

The inner cylinder 16 is lowered and the upper bead ring 18 is moved to the upper bead T1.
When pushed, the sector housing 21 is relatively lowered below the inner cylinder 16 due to the extension of the driving body 23 in synchronism with this pushing, and the sector 25 is kept in this closed state in accordance with this lowering. While being held or maintained, it is lowered vertically downward and is located below the upper bead ring 18, where
The portion 25C of the sector 25, that is, the chuck portion is inserted into the green tire T from the upper bead T1 side (see FIG. 10).

In the second embodiment, the filler ring 46 is located below the portion 25C and is located below the upper bead ring 18 (see FIG. 19; the same applies to the third embodiment).

The state shown in FIGS. 10 and 19 is a substantial suspension preparation posture of the green tire T.

By extending the fluid cylinder 33 (see FIG. 2) of the sector opening / closing mechanism 28 from the state shown in FIGS. 10 and 19, the inner tube 29 is lowered, and the cam ring 36 attached to the lower end of the tube 29 is also lowered. Since the cam roller 39 of the sector 25 is engaged with the cam ring 36,
The sector 25 supported via the fulcrum shaft 27 is
As shown in FIG. 11, the chuck portion 25C with the center as the center is changed to the open position and is pressed against the inner surface side of the upper bead T1 of the green tire T, where the upper bead ring 18 of the inner cylinder 16 and the chuck are attached. The green bead T is mechanically suspended by grasping the upper bead T1 by the cooperation with the portion 25C to perform (see FIG. 11).

In the second embodiment, when the portion 25C is moved to the open position, it is accurately moved by the guiding action of the uneven means 47, and since it has the uneven lines 47A and 47B, the gap 48 is very small as shown in FIG. (Less than the third embodiment shown in FIG. 22).

In this suspension, the chucking part 25C is
In each of the third embodiments, a partial circle is formed, and the green tires T are securely chucked and suspended because they are radially arranged radially outward.

The lower bead ring 12 is closed by relatively closing the upper and lower mold elements 1 and 4 while maintaining or maintaining the suspended state of the mechanical green tire T by the upper bead ring 18 and the chuck portion 25C. After pressing the lower bead T2 of the green tire T, the arrow C in FIG.
As shown by, the pressurized fluid (air) is fed into the green tire T through the inner tube 29, and the green tire T is inflated therein.

Then, as shown in FIG. 12, the upper bead ring 18 is fitted into the recess 64 of the upper die 6 by relative movement, and the upper bead ring 18 having a chuck function until now is inserted into the upper die 6 here. In this state, the elastic molded body 8 of the central mechanism 7 is inflated by supplying a thermal pressure medium such as steam, and the inner surface of the green tire T is sequentially shaped from the lower side.

In this shaping process, even if the top portion 7A of the central mechanism 7 projects upward, the sector 25 is in the radial arrangement, the link 25B extends vertically, and the chuck portion 25C projects radially outward. Because
There is a space in the central portion surrounded by the link 25B, and this space avoids interference between the top portion 7A and the sector 25.

In addition, in the second and third embodiments, the ring fitting portion 25G of the filler ring 46 holds the upper link 9 as shown by the phantom line in FIG. 20, and the elastic molded body 8 directly contacts the portion 25C. This is prevented by the filler ring 46, and furthermore, the elastic molded body 8 is prevented from being occluded via the gap 48.

As the shaping progresses, the sector 25 is brought into the closed position by the closing operation by the cam ring 36 and the relative ascent of the sector housing 21 near the final process, and the chuck portion 25C is housed in the inner cylinder 16 as shown in FIG. Moreover, in the first embodiment, the upper mounting ring 9 is fitted to the ring fitting portion 25G of the portion 25C and is fixedly held (see FIG. 13).

In the second embodiment, the portion 25C is closed by the guiding action of the concavo-convex means 47 so as to fit on the filler ring 46.

Next, as shown in FIG. 14, the green tire T is vulcanized and molded in the mold clamped state.
Is provided as a part of the mold and the chuck part
25C is housed in the inner cylinder 16, and the conformability of the elastic molded body 8 is secured well.

When the predetermined vulcanization molding is completed, the elastic molded body 8 in the central mechanism 7 is reduced and accommodated, the mold is opened, the molded tire T4 is released from the lower bead ring 12 in the central mechanism 7, and the carry-in member 42 is loaded. It is carried out of the mold via (see Fig. 15).

(Effect of the Invention) According to the present invention, since the green tire to be loaded into the mold element can be loaded in a state of being suspended (suspended), flat deformation and the like due to the freedom of the tire can be avoided. In addition to the basic operation and effect described below, there are the following unique advantages.

As a means for suspending the green tire, a mechanical means including an upper bead ring provided on the lower end side of the inner cylinder and a partially circular portion (chuck portion) on the lower end side of the sector housed inside the inner cylinder is adopted. Therefore, even if it is exposed to high temperature, it can be highly durable.

Further, since the upper bead of the tire formed by the upper bead ring and the partial circular portion can be gripped from the inside and the outside over substantially the entire circumference, the suspended state of the tire can be securely held or maintained.

Further, since the upper bead ring has both a tire chucking function and a mold part function, the number of parts can be reduced, and simplification of the structure can be expected. Since the ring has a chuck function, the simplification of the structure is remarkable.

Also, the sectors are arranged in a radial arrangement, and when this is in the closed position, the partial circular portion is housed on the lower bottom side of the inner cylinder, so interference with the top portion of the central mechanism can be avoided, and the partial circular portion is Since it is housed in the bottom of the cylinder, the upper bead ring can be firmly held during vulcanization, and a tire of good quality can be molded.

Furthermore, since the fitting part that receives and fits the upper mounting ring of the central mechanism is provided, not only interference of the upper part of the central mechanism can be avoided, but also the centering of the central mechanism is ensured and the center is displaced. Can be molded without.

Further, since a filler ring is provided below the partial circular portion and attached to the lower end side of the sector housing, direct contact of the elastic molded body with the partial circular portion is prevented by the filler ring. Damage to the elastic molded body can be suppressed, and durability is improved.

In addition, the filler ring is attached to the sector housing and can be moved up and down in the inner cylinder together with the housing. By forming the fitting portion of the upper attachment ring on the lower surface side of the filler ring, the misalignment of the central mechanism is perfect. It can be prevented.

Furthermore, between the joint surface of the partial circular portion and the filler ring,
Since the unevenness means is provided and the gap between the filler ring and the partial circular portion can be minimized by this unevenness means, not only the biting of the elastic molded body can be completely prevented, but also the unevenness means causes the gap between the opening and closing positions of the partial circular portion. Guidance can also be provided, where the suspension of the tire by the sector can be done accurately.

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 to 15 show the first embodiment thereof. FIG. 1 is an elevational sectional view of an upper side of a tire vulcanizing press, and FIG. 2 is an upper part of FIG. Elevation sectional view showing the side,
FIG. 3 is an elevational sectional view showing an intermediate portion of FIG. 1, FIG. 4 is an elevational sectional view of a lower portion of FIG. 1, which also shows an operating state, and FIG. 5 is a tire vulcanizing press. 6 is an elevational sectional view of a main part of the central mechanism of FIG. 6, FIG.
FIG. 4 is a partially cutaway sectional view taken along the line BB of FIG. 4, showing the operating state together. FIG. 8 is a partially cutaway elevation view showing only the sector, and FIGS. 9 to 15 are shown. FIG. 16 is a vertical sectional view showing a series of operating steps of the tire vulcanizing press of the present invention in order from green tire charging to molded tire unloading, and FIGS. 16 to 20 show a second embodiment of the present invention. Fig. 16 is an elevational sectional view of an essential part, Fig. 17 is a sectional view taken along the line CC of Fig. 16, Fig. 18
FIG. 16 is a sectional view taken along the line D--D in FIG. 16, FIGS. 19 and 20 are sectional elevational views showing the operation, FIGS. 21 and 22 are the third embodiment of the present invention, and FIG. FIG. 22 is a sectional view showing only an essential part, and FIG. 22 is a sectional view showing the same operation. 1 ... Lower mold element, 4 ... Upper mold element, 7 ... Central mechanism, 8
...... Internal elastic molding, 16 …… Inner cylinder, 18 …… Upper bead ring, 21 …… Sector housing, 25 …… Sector, 25C
...... Partial circular part, 25G …… Mating part, 46 …… Filler ring, 47 …… Asperity means.

Claims (5)

[Claims] 1. An upper mold element 4 and a lower mold element 1 which can be opened and closed mutually.
And a vertically extended link 25 on the upper mold element 4 side.
A plurality of sectors 25, each of which is composed of a portion 25C having a partial circular shape in a radial direction from the lower end side of the link 25B toward the radially outer side, are provided in a radial arrangement so as to be freely changeable between an open position and a closed position,
The green tire T can be loaded into the mold elements 1 and 4 by gripping the upper bead T1 of the green tire T through the sector 25, and the inner surface shape of the green tire T loaded into the mold elements 1 and 4 In a tire vulcanizing press for shaping and vulcanizing a flexible elastic body 8 which can be expanded and contracted and a heat and pressure medium enclosed therein, a bead which is a part of the upper mold element 4 side. ring
An inner cylinder 16 having 18 on the lower bottom side is provided so as to be able to move up and down relatively, and a sector housing 21 that holds a plurality of sectors 25 in the inner cylinder 16 so as to be changeable between an open position and a closed position is relatively moveable. The upper bead T1 of the green tire T is provided so as to be able to be sandwiched by the bead ring 18 provided on the inner cylinder 16 and the partially circular portion 25C of the sector 25, and further, the partially circular portion of the closed sector 25. The curved portion 25C is accommodated in the lower bottom side of the inner cylinder 16, and further, a ring fitting portion 25G for receiving and holding the upper mounting ring 9 having the elastic molded body 8 during vulcanization is provided. A tire vulcanizing press characterized by being provided. 2. The tire vulcanizing press according to claim 1, wherein the ring fitting portion 25G is formed below the partially circular portion 25C of the sector 25. 3. A filler ring 46 is attached to the lower end side of the center housing 21, and a circular section 25C of the closed sector 25 is accommodated on the filler ring 46, and the upper bead of the green tire T is further provided. The portion 25C, which is the circular shape of the sector 25 to hold T1, is the filler ring 46.
The filler ring 46 is positioned below the portion 25C so that the filler ring 46 can be extended more radially outward.
The tire vulcanizing press according to claim 1, wherein a ring fitting portion 25G is formed on the lower surface side of the tire. 4. A portion of the open position, which guides the position change between the open position and the closed position of the sector 25, on the joint surface between the circular portion 25C of the sector 25 and the filler ring 46.
The tire vulcanizing press according to claim 3, further comprising a concavo-convex means 47 for preventing the elastic molded body 8 from entering between the 25C and the filler ring 46. 5. The tire vulcanization according to claim 3, wherein the filler ring 46 is mirror-finished by chrome plating or the like to reduce sliding contact wear with the elastic molded body 8. press.