JP3884537B2 - Tire vulcanization mold and vulcanization molding method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
One of the present invention relates to a tire vulcanization mold, more specifically, a split halved tire vulcanization mold that is detachably attached to an upper and lower dome type vulcanizer, In the case of a conventional mold, only a very small amount of processing is applied to this. When a new mold is manufactured, simple parts are added at the same time, and a large number of vent holes are omitted. Even if a vent hole is provided, the number can be greatly reduced compared to the conventional case, and it is possible to vulcanize the unvulcanized tire advantageously without causing a bear failure in the tire, Moreover, regarding tire molds for vulcanization molding of tires that can be stopped at a cost increase that can be offset with the cost of vent hole processing,
The second of the present invention relates to a tire vulcanization molding method, and more particularly, to a tire vulcanization molding method using the mold of the present invention, and in particular, the tire after vulcanization molding has no spew, Even if there are spews, the number can be reduced to a very small number, so that the number of processing steps can be reduced and the cost can be reduced, and there is no generation of bears and there is no spew removal marks, or there are spew removal marks. The present invention relates to a method for vulcanizing and molding a tire capable of providing a tire having an excellent appearance that is very small.
[0002]
[Prior art]
When an unvulcanized tire is vulcanized and molded with a mold, a high pressure gas such as high pressure steam of 14 to 28 kgf / cm ² , high pressure nitrogen gas, etc. is introduced into the unvulcanized tire to introduce an unvulcanized tire on the inner surface of the mold. Is pressed to form an outer contour of a predetermined shape on the product tire.
[0003]
At that time, when air is trapped (trapped ) between the inner surface of the mold and the tire to be vulcanized, the inner surface of the mold is generally called a bear on the outer surface of the product tire after completion of the vulcanization molding. It is a well-known fact that non-contact appearance defects are formed.
[0004]
Therefore, in order to prevent this defect from occurring, it is well known to provide a large number of vent holes that allow the air trapped in the mold to escape, and if the bear defect still does not improve, cut vent holes that connect between the vent holes. ing. Of course, the vent hole penetrates the mold and discharges trapped air to the outside of the mold.
[0005]
However, while vent holes are also escape routes for trapped air, it is inevitable that rubber that has increased the fluidity of unvulcanized tires during vulcanization molding will flow into the vent holes. When the rubber becomes a product tire, it forms an elongated rubber protruding column called a spew. This type of spew has nothing to do with tire performance and, on the other hand, detracts from the appearance of the tire and must be excised in the finishing process. Therefore, vent holes are a necessary evil. The smaller the number, the better and the better.
[0006]
Therefore, Japanese Patent Application Laid-Open No. Sho 62-21 4 906 proposes a method for molding a pneumatic tire in which there is no spew in a vulcanization molding using a mold having a split mold and an upper and lower mold. Is a closed space between the upper and lower molds that contain unvulcanized tires before the molds are completely closed by providing a sealing mechanism around each of the upper and lower mold matching molds. The surface of the unvulcanized tire is formed on the top of the rib for forming the tread pattern, which is preformed by supplying a fluid of 10 to 100 kPa into the inner bladder of the unvulcanized tire and making the upper and lower molds approach each other. Is generated by reducing the pressure in the closed space to 1 / 13H (H is the rib height mm) or less of the pressure in the bladder until the shoulder side space in the contact portion is sealed by this contact. Block That, it is that.
[0007]
[Problems to be solved by the invention]
In the method proposed by the above publication, when the mold is attached to a dome type vulcanizer, the vulcanizer must be stopped before full closure to vacuum the inside of the dome. It is necessary to newly provide a sealing mechanism. However, since the outer dimension of the dome itself is remarkably large, this type of sealing mechanism is not only technically difficult, but also requires a large capital investment when the number of vulcanizers is large. In addition, originally, only a small space between the mold forming the closed space and the unvulcanized tire is sufficient, but the entire space inside the dome must be vacuumed, and the vacuum efficiency is remarkably inferior.
[0008]
In order to solve the above problem, an attempt was made to provide a sealing mechanism in the container by using a container that wraps and divides the upper and lower molds and applying the mold accommodated in the container to the dome type vulcanizer (Japanese Patent Laid-Open No. Hei. 9-183124) . The structure of this type of sealing mechanism is simple and highly accurate, and it has been found that the purpose can be achieved in terms of eliminating spews and reducing the number of spews. In the end, the mold will increase in cost, and in terms of performance, a vacuum layer is formed between the container and the mold, so it is difficult for the heat source in the dome, such as steam heat, to be transmitted to the mold. As a result, it has been found that there is a problem of lack of reality that the vulcanization molding time must be greatly extended.
[0009]
Therefore, the invention described in claim 1 of this application has a simple structure with a low degree of difficulty of the technology used, requires a very low investment cost, and does not require a vent hole under high vulcanization molding efficiency. Or, if necessary, it is only necessary to arrange a few vent holes, and one of the purposes is to provide a mold for vulcanization molding of a tire that does not cause a bear failure in the vulcanization molding tire,
The invention described in claims 2 to 4 of this application can be stopped only by applying extremely simple processing to the currently operating dome type vulcanizer, and the vulcanizer is described in claim 1 above. A second object of the present invention is to provide a tire vulcanization molding method in which a mold can be detachably attached and a bear failure can be completely prevented by a mold having a small number of vent holes.
[0010]
[Means for Solving the Problems]
In order to achieve one of the above objects, the invention described in claim 1 is a two-sided and vertically aligned tire vulcanization mold that is detachably attached to an upper and lower dome type vulcanizer.
One of the upper mold and the lower mold includes a cylinder having a cylindrical inner peripheral surface that is fixed to the outer peripheral surface and protrudes from the outer peripheral surface of the mold, and the other mold Is provided with an annular seal member that is slidably engageable with the inner peripheral surface of the cylinder on its outer periphery
At the vertical dome separation position within the range of the vertical movement distance of the upper mold dome with respect to the lower mold dome of the vulcanizer, the inner peripheral surface of the cylinder of one mold and the annular seal member of the other mold are A sealing mechanism to be engaged,
An exhaust hole that communicates from the outer peripheral joint surface of one of the upper and lower molds to the outside of the mold through the outer peripheral part, and for exhaust that extends from the outside of the vulcanizer to the end of the exhaust hole in which an exhaust system having a seal joint for receiving a pipe joint that is sealing secured to the distal end of the tube detachably.
[0011]
In such a mold for vulcanization molding, the mold in the case of providing a vent hole although the number is small, the upper mold and the lower mold are an inner mold that forms the outer shape of the tire, and an inner mold. The inner mold has a plurality of vent holes communicating with the inner surface and the outer surface, and all of the vent holes communicate with the outer surface of the inner mold. And a vent groove extending to the mating surface of the upper and lower molds. In addition, on the inner surface of the upper and lower molds including the above inner molds, various patterns such as tire tread patterns, tire sizes, tire types and brand names, names, etc. for displaying characters, patterns, and other irregularities Is formed.
[0012]
In order to achieve the second object, the invention described in claim 2 of the present invention is a dome type vulcanizer having a function of moving the upper dome vertically and vertically within a predetermined separation distance with respect to the lower dome. When loading the unvulcanized tire to the vulcanization mold of the split-up and bottom-attached vulcanization molding,
A vulcanization mold having the seal mechanism and the exhaust system according to claim 1 is attached to a vulcanizer, and an unvulcanized tire is loaded on the lower mold of the mold,
The above-mentioned exhaust joint seal joint of the mold and the exhaust pipe joint at one end connected to the vacuum means extending from the outside of the vulcanizer are jointed, and the upper mold dome descends vertically toward the lower mold dome The upper mold dome is temporarily stopped at the position where the sealing mechanism is in operation, and the vacuum means is operated during the stop to suck air between the inner surface of the mold and the outer surface of the unvulcanized tire. To the outside of the vulcanizer , and the space is brought into a low vacuum state in the range of 20 to 100 Torr ,
After this discharge has passed for a predetermined time, the upper and lower dome and the upper and lower molds are fully closed. Immediately after this full closure, a pressurized body with a pressurized fluid is applied to the inner surface of the unvulcanized tire, and the inner surface of the mold is not yet closed. Press the vulcanized tire for a predetermined time,
A method for vulcanizing and molding a tire is characterized in that after shaping of an unvulcanized tire is completed, a high-temperature gas is supplied to the inside of the dome of the vulcanizer, thereby vulcanizing and molding the unvulcanized tire.
[0014]
In a preferred embodiment, as in the invention according to claim 3, once the stop position of the middle of the upper dome toward the lower dome descends vertically, the upper mold die is in contact with the green tire immediately before Position.
[0015]
In another preferred embodiment, as in the invention described in claim 4 , the discharge of air between the inner surface of the mold and the outer surface of the unvulcanized tire by the operation of the vacuum means is performed outside the vulcanizer. Continue until shaping of the unvulcanized tire. In other words, there are two types of this air discharge operation, the first type is the case where there is a complex intricate unevenness on the inner surface of the mold, in which case it takes the above air discharge form, Suitable for complete prevention of bear failure. In the second type, if there are convex parts such as ribs with a relatively simple shape on the inner surface of the mold and complete air discharge is possible in a short time without requiring much time, the inner surface of the mold The air discharge is completed before pressing the unvulcanized tire.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a left half cross-sectional view showing a state in which an air is discharged before fully closing a split mold for tire vulcanization molding,
FIG. 2 is a cross-sectional view schematically illustrating a main part of the dome type vulcanizer in which the upper and lower domes are perpendicular to each other and once stopped, and the tire vulcanization mold housed inside the upper and lower dome .
[0017]
In FIG. 1, a tire vulcanization mold (hereinafter referred to as a mold) 1 that is a split-up / down mold includes an upper mold 2 and a lower mold 3. Are separated from each other by a vertical distance D (mm) in a state where the central axes E of the two coincide. An upper mold 2 of the illustrated mold 1 has an inner mold 2a and an outer mold 2b that is fixedly accommodated by a bolt 4 or the like, and the lower mold 3 is also an inner mold. 3a and an outer mold 3b for fixing and housing the same with bolts 4 or the like. The tires are all shaped by the inner surfaces of the inner molds 2a and 3a .
[0018]
One of the upper and lower molds 2 and 3, in the illustrated example, the lower mold 3 is provided with a cylinder 5 fixed to the outer peripheral surface thereof. The cylinder 5 is preferably protruded upward from the outer peripheral mating surface 5s of the lower mold 3, and the protruding tip is preferably tapered to prevent galling. Further, at least the inner peripheral surface of the cylinder 5 above the outer peripheral mating surface 5s needs to be a cylindrical inner surface capable of maintaining a complete seal state in cooperation with an annular seal member described later. Although the illustrated cylinder 5 is separately attached to the existing lower mold 3, it is advantageous to create it integrally with the outer mold 3 b when newly manufactured.
[0019]
The other mold of the upper and lower molds 2 and 3, in the illustrated example, the upper mold 2 is provided with an annular seal member 6 on the outer periphery thereof. The annular seal member 6 can be slidably engaged with the inner peripheral surface of the cylinder 5 at the positions of the illustrated upper and lower molds 2 and 3. It is preferable to embed in the dovetail groove of the upper mold 2 in order to prevent the slide from falling off. The annular seal member 6 may be a heat-resistant O-ring. However, the annular seal member 6 has sufficient heat resistance that can withstand a sufficient period of time at a high temperature during vulcanization molding, for example, 180 to 200 ° C. Any material that has a material such as a fluororesin is suitable.
[0020]
The separation distance D between the upper and lower molds 2 and 3 for operating the sealing mechanism by the cooperation of the cylinder 5 and the annular seal member 6 is the vertical vertical direction of the upper mold dome with respect to the lower mold dome of the dome type vulcanizer to which the mold 1 is attached. It must not be zero within the range of travel distance.
[0021]
An exhaust hole 7 extending downward from the outer peripheral mating surface 5s of the lower mold 3 to the vicinity of the lower end is formed, a horizontal hole is provided so as to be orthogonal to the exhaust hole 7, and a taper tube screw is machined in the horizontal hole. The female or male seal joint 8 is coupled to this. The seal joint 8 is connected to a pipe joint at the tip of an exhaust tube extending from a dome type vulcanizer described later.
[0022]
In FIG. 1, for convenience of explanation, both the mold type having the vent hole 9 and the mold type having no vent hole are shown in the same figure, but in reality, the tread portion sandwiching the equator plane of the tire is shown. Except for a special case where the complexity of the pattern is significantly different on both sides, the mold 1 is divided into the mold 1 provided with the vent hole 9 and the mold 1 not provided at all.
[0023]
When the vent hole 9 is provided (see the upper mold 2), the upper mold 2 is constituted by an inner mold 2a and an outer mold 2b that is fixedly accommodated by a bolt 4 or the like as shown in the figure. It is necessary to provide the minimum necessary number of through vent holes 9 only in the inner mold 2a. Further, vent grooves 10 and 11 for connecting these vent holes 9 vertically and horizontally with the outer surface of the inner mold 2a are provided, and either of the vent grooves 10 or 11, in the illustrated example, the vent groove 10 is connected to the outer peripheral surface of the upper and lower molds. Open for 5 s. The same applies to the lower mold 3.
[0024]
Reference numerals 12 and 13 shown in FIG. 1 are bead rings in accordance with a custom for forming a bead portion of a tire, and therefore, the conventional ring only has to be processed with a groove for mounting a seal member. It is a sealing member for maintaining the degree.
[0025]
The mold 1 described above does not have a particularly complicated configuration, and thus has a simple configuration that can be produced in the factory, so that the mold 1 can be obtained without much cost increase. This is a remodeling cost that is sufficiently commensurate with a reduction in the processing cost of the vent hole 9, and the new manufacturing cost of the mold 1 is rather low.
[0026]
Hereinafter, FIG. 2 will be described with respect to a dome type vulcanizer (hereinafter referred to as a vulcanizer) 20 to which the above-described mold 1 is detachably attached and its operation.
The vulcanizer 20 is divided into an upper dome 21 and a lower dome 22, the lower dome 22 is fixed to the floor, the upper dome 21 is moved up and down, and a fully closed state with respect to the lower dome 22 is in operation. It's time. At the beginning of the opening / closing operation of the upper dome 21, the upper dome 21 moves vertically up and down along the central axis of the upper and lower dome 21, 22 for a predetermined separation distance. It exhibits a curved motion along a curve and takes a stop position (not shown) diagonally above the lower dome 22.
[0027]
A fluid of a high pressure heating source for heating the mold 1 and the unvulcanized tire accommodated therein, for example, high temperature and high pressure steam, is supplied to the inner space of the upper and lower dome 21 and 22 so that the upper and lower dome 21 and 22 are engaged with each other. Packing 23, 24 as a sealing member that also serves as heat insulation is fixed to the contact surface. The main bodies 21-1 and 22-1 of the upper and lower dome 21 and 22 are made of steel, and most of the outer periphery thereof is covered with a thick heat insulating material 25.
[0028]
1 and 2 below, the upper mold 2 of the mold 1 is detachably attached to the upper mold dome 21, and the lower mold 3 is detachably attached to the lower mold dome 22. Prior to mounting the lower mold 3, the pipe joint fixed to the tip of the exhaust tube extending from the lower mold dome 22 is connected to the female or male seal joint 8 of the lower mold 3.
[0029]
Prior to the operation of the vulcanizer 20, unvulcanized tires (not shown) are loaded into the lower mold 3 and then the upper mold dome 21 starts to descend and the vulcanizer 20 enters an operating state. The upper mold dome 21 continues to descend toward the lower mold dome 22, and the upper mold dome 21 changes from a curved motion to the vertical descending motion with respect to the lower mold dome 22, and the distance d between the packings 23 and 24 is predetermined. When the value becomes, the upper die dome 21 is temporarily stopped.
[0030]
This temporary stop position is a position where the separation distance D of the upper and lower molds 2, 3 ≈ the distance d between the packings 23, 24 is in the range of 10 to 100 mm. A seal mechanism in cooperation with the seal member 6 works, and the space between the outer surface of the unvulcanized tire and the inner surface of the mold 1 forms a completely closed space. In addition, a pressurized body made of a conventional pressurized fluid (not shown) such as a rubber bladder is inserted inside the unvulcanized tire after being expanded to some extent, so that the outer surface of the bead portion of the unvulcanized tire is completely closed. Has been. Further, it is preferable that the temporary stop position is a position immediately before the contact between the upper mold 2 and the unvulcanized tire, and the distance d between the packings 23 and 24 is determined in consideration of this point. And
[0031]
During this temporary stop, the vacuum means is operated via the exhaust tube 26 connected to the vacuum means (not shown) to exist in a closed space between the outer side surface of the unvulcanized tire and the inner side surface of the mold 1. The sucked air is sucked, and the sucked air is discharged to the outside of the vulcanizer 20. Thus between the closed space, a low vacuum state in the range of 20~100Torr in the case of mold 1 having a vent hole 9. The vacuum means may be, for example, either a vacuum pump itself or a relatively large vacuum tank connected to several vulcanizers 20 and connected to a vacuum pump.
[0032]
After a period of time during which suction and discharge of air in the closed space is within the above vacuum range, the upper and lower molds 21 and 22 are fully closed, that is, the upper and lower molds 2 and 3 are also fully closed. Simultaneously with the full closure, a pressure body, for example, a rubber bladder supplied with a pressurized fluid having a predetermined pressure is applied to the inner surface of the unvulcanized tire so that the ribs or convex portions, concave portions and smooth portions provided on the inner surface of the mold 1 are not yet applied. The vulcanized tire is shaped by contact pressing for a predetermined time, for example, 2 to 10 minutes. At this time, since only a very small amount of air exists between the inner surface of the mold 1 and the outer surface of the unvulcanized tire, the air cannot be trapped, and therefore no bear failure occurs. The appropriate internal pressure for shaping the pressure body is in the range of 5 to 30 kgf / cm ² .
[0033]
If it is inevitable that the closed space is divided into a plurality of places, or if it is occasionally, as shown in the upper mold 2 of FIG. 9 and the vent grooves 10, 11 can completely prevent the occurrence of bear failure. In this case, since it is necessary to form an air flow in the vent hole 9 and the vent grooves 10 and 11 even during the shaping of the unvulcanized tire, the air suction exhaust by the above-described vacuum means is continued during the shaping. Shall be implemented.
[0034]
Simultaneously with the shaping of the unvulcanized tire, a valve provided in the middle of the exhaust tube 26 connected to the vacuum means, for example, an electromagnetic valve (not shown) is closed to stop the operation of the vacuum means, Air discharge operation with the uncured tire outer surface is stopped. Simultaneously with the stop of the air discharge operation, high temperature gas, for example, high temperature steam is supplied in the direction of the arrow through the supply pipe 27 into the dome 21 and 22 of the vulcanizer 20 to vulcanize the unvulcanized tire. The steam pressure is in the range of 3 to 10 kgf / cm ² and the steam temperature is in the range of 100 to 200 ° C.
[0035]
If the vulcanization molding method described above using the mold 1 and the vulcanizer 20 to which the mold 1 is attached is formed, it is formed between the inner surface of the mold 1 and the outer surface of the unvulcanized tire. Since the closed space is only a very small volume, the exhaust efficiency is high and the vacuum of the closed space can be increased. As a result, the stop time is extremely short, and the productivity of the vulcanization molding process is not much. Without damaging, the tire after vulcanization molding has no spew, or even if it is present, only a very limited number can be used, and it can completely prevent the occurrence of bear failure, and the failure due to bear A significant reduction in the rate and the appearance of the tire can be achieved.
[0036]
In particular, in the case of a tire using foamed rubber as the outer rubber of the tread rubber of the tire, for example, a tire for agricultural machinery, high temperature foamed rubber immediately after vulcanization molding has low tensile strength. Is cut off in the middle, and the remaining spewed portion stops inside the vent hole, causing clogging. Therefore, in the subsequent tire vulcanization molding, there are a large number of vent holes that do not serve as air escapes, so there are many troubles that bears occur at a large number of locations per tire. According to the vulcanization molding method described above using the vulcanizer 20 to which the mold 1 is attached, this type of trouble can be eradicated.
[0037]
Furthermore, not only the mold 1 but also the vulcanizer 20 need not be subjected to new large-scale processing or additional equipment or expensive parts, and the conventional vulcanizer 20 is sufficient. In other words, it is sufficient to attach the exhaust tube 26 and the joint connected to the vacuum means. Even with the vacuum means, the exhaust efficiency is extremely high, so that it has a great advantage that a very small investment is required in total.
[0038]
【The invention's effect】
According to the invention described in claim 1 of this application , it has a simple structure that does not require specially advanced technology, requires very low investment cost, and has a high ventilating molding efficiency. Even if necessary, only a few vent holes need to be arranged, and a vulcanization mold for a tire that does not cause a bear failure in the vulcanization molded tire can be provided.
According to the invention described in claims 2 to 4 of this application , even in the dome type vulcanizer currently in operation, the vulcanizer which is stopped only by performing extremely simple processing on the dome type vulcanizer is described in the above claim 1. The vulcanization molding of the tire that can completely prevent the occurrence of bear failure even if the number of vent holes is greatly reduced compared to the conventional one even if the mold has complicated protrusions on the inner surface by attaching the mold A method can be provided.
[Brief description of the drawings]
FIG. 1 is a left half sectional view of a mold according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part of a dome type vulcanizer as an example of an embodiment of the present invention that accommodates the mold shown in FIG. 1;
[Explanation of symbols]
1 Split-up-and-down type tire vulcanization mold 2 Upper mold 2a Inner mold 2b Outer mold 3 Lower mold 3a Inner mold 3b Outer mold 4 Bolt 5 Cylinder 5s Alignment of upper and lower molds Surface 6 Annular seal member 7 Exhaust hole 8 Seal joint 9 Vent hole 10, 11 Vent groove 12, 13 Bead ring 14 Seal member 20 Dome type vulcanizer 21 Upper dome 21-1 Upper dome body 22 Lower dome 22- DESCRIPTION OF SYMBOLS 1 Lower mold dome main body 23, 24 Packing 25 Heat insulation material 26 Exhaust tube 27 High temperature gas supply pipe D Vertical separation distance of upper and lower mold dies d Distance between upper and lower packing

Claims (4)

In the mold for tire vulcanization molding of split-up and down type that is detachably attached to the top and bottom dome type vulcanizer,
One of the upper mold and the lower mold includes a cylinder having a cylindrical inner peripheral surface that is fixed to the outer peripheral surface and protrudes from the outer peripheral surface of the mold, and the other mold Is provided with an annular seal member that is slidably engageable with the inner peripheral surface of the cylinder on its outer periphery
At the vertical dome separation position within the range of the vertical movement distance of the upper mold dome with respect to the lower mold dome of the vulcanizer, the inner peripheral surface of the cylinder of one mold and the annular seal member of the other mold are A sealing mechanism to be engaged,
An exhaust hole that communicates from the outer peripheral joint surface of one of the upper and lower molds to the outside of the mold through the outer peripheral part, and for exhaust that extends from the outside of the vulcanizer to the end of the exhaust hole An exhaust system having a seal joint that removably receives a pipe joint that is sealed and attached to the tip of the tube, and an upper mold and a lower mold that form an outer shape of the tire, and an inner mold The inner mold has a plurality of vent holes communicating with the inner surface and the outer surface, and all of the vent holes communicate with the outer surface of the inner mold. to, vulcanization molding mold of the tire, characterized in Rukoto a vent groove extending up to the upper and lower mold mating surfaces of. Unvulcanized tires for vulcanization molds of split halves that are detachably attached to a dome type vulcanizer that has the function of moving the upper dome vertically and vertically within a predetermined separation distance relative to the lower dome When vulcanizing and molding,
A vulcanization mold having the seal mechanism and the exhaust system according to claim 1 is attached to a vulcanizer, and an unvulcanized tire is loaded on the lower mold of the mold,
The above-mentioned exhaust joint seal joint of the mold and the pipe joint at the other end of the exhaust tube extending from the outside of the vulcanizer and connected at one end to the vacuum means are jointed, and the upper mold dome descends vertically toward the lower mold dome The upper mold dome is temporarily stopped at the position where the sealing mechanism is in operation, and the vacuum means is operated during the stop to suck air between the inner surface of the mold and the outer surface of the unvulcanized tire. To the outside of the vulcanizer , and the space is brought into a low vacuum state in the range of 20 to 100 Torr,
After this discharge has passed for a predetermined time, the upper and lower dome and the upper and lower molds are fully closed. Immediately after this full closure, a pressurized body with a pressurized fluid is applied to the inner surface of the unvulcanized tire, and the inner surface of the mold is not yet closed. Press the vulcanized tire for a predetermined time,
A method for vulcanizing and molding a tire, characterized in that after shaping of an unvulcanized tire is completed, a high-temperature gas is supplied into the inside of the dome of the vulcanizer, thereby performing vulcanization molding on the unvulcanized tire. Vulcanization method according to claim 2, just before the position where the upper dome toward the lower mold dome once the stop position of the middle of descending vertically, the upper mold die is in contact with the green tire. According to claim 2 or 3 continues to discharge to the vulcanizer outside air between the inner surface and the unvulcanized tire outer surface of the mold by the operation of Bakyuumu means to the shaping completion of the unvulcanized tire Vulcanization molding method.

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