JPH0618700B2 - Elastomer article vulcanizing method and vulcanizing apparatus thereof - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of vulcanizing an elastomer article and a vulcanizing apparatus thereof.

[Conventional technology]

Conventionally, as a method of gas vulcanizing an elastomer article such as an automobile tire using a vulcanizer, a case where a bladder is provided will be described. As shown in FIG. 10, the bladder c is expanded by supplying shaping internal pressure. Then, the elastomer article b is shaped until it is close to the shape of the inner surface of the die, the die is closed, and the elastomer article b (the tire of the automobile is shown in the figure) is mounted in the die a. After passing along the inner surface of the mold, steam as a heating medium is provided in the central mechanism of the vulcanizer from an outlet e communicating with the supply passage d, and from a position below the center of the mold into the vulcanization chamber inner space f. When the tire b reaches a predetermined temperature or when a predetermined time elapses, the supply of the steam is stopped, and then the steam b is supplied in a substantially horizontal direction to heat and pressurize the tire b. One or a high pressure pressurizing medium such as a combustion gas or nitrogen is provided horizontally from the same outlet e or at the same height as the steam outlet e and communicates with the supply passage. The gas is blown horizontally from the exclusive outlet to the tire inner space, and the temperature of the tire b is maintained at a predetermined temperature by this gas.

[Problems to be Solved by the Invention]

In the conventional technology, since steam is blown out in a substantially horizontal direction from the position below the center of the vulcanization chamber, condensed drainage is accumulated in the lower part of the lower surface of the tire without being discharged,
Prevents heating of the lower sidewall. In other words, as the flow of steam weakens as the internal pressure rises, and the internal flow stops, the enthalpy is lost and the steam becomes fine steam, which becomes minute water droplets, and the relative specific gravity increases, causing sedimentation and overheating. As-is steam rises due to its small relative specific gravity. As a result, a temperature gradient occurs in the vertical direction inside the tire. In addition, the temperature of the pressurized gas is relatively lower than that of steam, and it is blown horizontally toward the lower part of the tire from the same nozzle at the lower part of the tire as the steam, so the part where the gas flow hits (the lower bead part, etc.) is cooled. In the state where the temperature is lowered and the inflow of gas is stopped with the increase of the internal pressure and the internal flow is stopped, the specific gravity is relatively larger than that of the steam, and it is easy to accumulate in the lower part of the internal space f of the tire.
Therefore, the temperature of the lower side wall and the lower bead portion with which the low temperature gas comes into contact decreases.

On the other hand, the steam is biased to the upper part of the internal space f, and the low-temperature gas is supplied by the gas introduced at high pressure,
The steam is adiabatically compressed for a short time and the temperature rises,
This will raise the temperature of the upper sidewall portion.

Therefore, in the inner space f of the tire, a layer g mainly containing steam is formed in the upper part thereof, a layer h mainly containing gas is formed in the lower part, and a layer i of the steam drain is formed in the lowermost part. Therefore, as shown in FIG. 2, the temperature inside the tire shows a rising tendency as shown by the phantom line 16 at the point A of the upper bead portion of the tire after the gas is supplied, and at the point of the lower bead portion of the tire. B
Then, after introducing the gas, a downward trend as shown by the imaginary line 15 is exhibited, and therefore a large temperature difference (for example, between the points A and B) (for example,
13 ° C) will occur.

Further, as shown in FIG. 3, at the point C of the upper sidewall portion of the tire, after the gas is supplied, there is a rising tendency as shown by the imaginary line 16a, and at the point D of the lower sidewall of the tire 2, After introducing the gas, the temperature as shown by the phantom line 15a does not rise. Therefore, a large temperature difference (for example, 12 ° C.) occurs between the points C and D.

When a large temperature difference as described above occurs, this is not completely eliminated by the end of vulcanization, so that the upper and lower side surfaces of the tire b have different degrees of vulcanization from each other, which is unfavorable in terms of quality and temperature rise. The required vulcanization time is set in accordance with the lower portion of the tire, which requires a longer time than necessary, which is not preferable from the viewpoint of productivity and energy saving.

The present invention has been made to solve such conventional drawbacks, a temperature difference does not occur inside the elastomer article during gas vulcanization, and uniform vulcanization is performed,
An object of the present invention is to provide a vulcanization device for elastomer articles, which can achieve reduction in energy loss.

[Means for Solving the Problems]

In order to achieve the above object, one of the methods for vulcanizing an elastomer article in the present invention is to heat the elastomer article by mounting the elastomer article in a vulcanization chamber of a mold and supplying a heating medium such as steam to the vulcanization chamber. When pressure is applied and the elastomer article reaches a predetermined temperature, or when a predetermined time elapses, the supply of the heating medium is stopped, and then an inert gas such as nitrogen is used as a pressure medium and the heating medium is used. A method for vulcanizing an elastomer article, which is supplied at the same or high pressure until the end of the remaining time of the heating step, and after the heating step is completed, the vulcanizing medium that is a mixture of the heating medium and the pressurizing medium is discharged to complete the vulcanization. In, the heating medium, which becomes a flow from the equator or the vicinity thereof of the elastomer article to the lower opening end edge portion through the lower side wall portion, is sprayed obliquely downward from the position above the center portion of the mold, and It is intended to blow obliquely upward toward the upper side wall portion to its upper opening edge portion of the elastomeric article of the pressurized medium from the center position below the mold.

Another method for vulcanizing an elastomer article according to the present invention is to spray a heating medium, which becomes a flow toward the equator through a lower side wall portion of the elastomer article, obliquely downward from a position above a central portion of the mold, and The pressure medium is sprayed obliquely upward from the position below the center of the mold toward the upper side wall of the elastomer article or the upper opening end edge thereof.

One elastomer article vulcanizing apparatus according to the present invention is such that a vulcanization chamber of a mold is mounted with an elastomer article and a heating medium such as steam is supplied to heat and pressurize the elastomer article so that the elastomer article has a predetermined size. When the temperature is reached or when a predetermined time elapses, the supply of the heating medium is stopped, and then an inert gas such as nitrogen is used as a pressurizing medium at the same or high pressure as the heating medium and the rest of the heating step. In a vulcanization apparatus for an elastomeric article which is supplied until the end of time and maintains the temperature of the elastomeric article at a predetermined temperature, heating which becomes a flow from the equator of the elastomeric article or in the vicinity thereof to a lower opening end edge portion through a lower sidewall portion. A heating medium outlet for spraying the medium obliquely downward is formed on the upper bladder holding portion or the center post head which is arranged at a position above the center of the mold. In addition, a pressurizing medium outlet for spraying the pressurizing medium obliquely upward from a position below the central portion of the mold toward the upper side wall portion of the elastomer article or the upper opening end edge portion thereof is provided in the mold. It is formed in a bag well or a lower bladder holding portion arranged at a position below the center of the mold.

Another elastomer article vulcanizing apparatus according to the present invention has a heating medium outlet for blowing a heating medium obliquely downwardly, which becomes a flow toward the equator, through a lower side wall portion of the elastomer article, a center portion of the mold. The pressurizing medium is formed on the upper bladder holding portion or the center post head arranged at the upper position, and the pressure medium is applied from the lower position of the center of the mold to the upper side wall of the elastomer article or the upper opening edge thereof. A pressure medium outlet for spraying diagonally upward toward
It is formed in a bag well or a lower bladder holding portion arranged below the center of the mold.

Further, in the above-mentioned vulcanizing apparatus, it is preferable that the heating medium outlet is formed in a detachable outlet nozzle, and the pressurized medium outlet is formed in a detachable outlet nozzle.

[Action]

When the heating medium is blown from the position above the center of the mold toward the tire equator or its vicinity, most of the heating medium follows the shape of the inner surface of the tire, passes through the equator or its vicinity through the lower side wall, and further to the lower bead. Flow toward the section, and the drain pool in the lower part of the tire is pushed out and discharged from the inside of the tire.For example, when it is blown toward the lower side wall of the tire, the drain pool is blown away by the jet flow. Therefore, it is possible to prevent the heating delay of the lower side wall portion due to the drain accumulation under the tire.

Further, by blowing the pressurized medium (gas) upward, for example, in the vicinity of the upper side wall portion, the low temperature gas flow is obliquely directed to the relatively high temperature steam portion unevenly distributed in the upper portion due to the temperature gradient in the vertical direction in the tire. And without causing adiabatic compression of steam, its jetting kinetic energy produces a swirling stir flow in the longitudinal direction with respect to steam,
Eliminates uneven distribution of high temperature steam and eliminates temperature gradients inside the tire. Further, due to the uneven distribution of high-temperature steam and the vertical temperature gradient in the tire, the upper part of the tire, which has become relatively hot, is cooled, and the vertical temperature of the tire is made uniform.

In addition, if the blowing nozzle is removable, the blowing direction of the heating medium and the pressurizing medium can be changed by changing the nozzle, and the optimum direction can be selected according to the size and shape of the elastomer article. ， It can be set to blow out at an angle to obtain the maximum effect.

〔Example〕

Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a rolling-in-bladder type vulcanizing apparatus for a tire as an example of an elastomer article according to the present invention. This apparatus is equipped with a raw tire 2 in a vulcanizing chamber of a mold 1 and has an upper end portion. The bladder 3 held by the upper bladder holding portion 10 and the lower end portion held by the lower bladder holding portion 11.
By making pre-shaping inner pressure filling the raw tire 2 near the inner surface of the mold 1, then closing the mold and supplying a heating medium such as steam into the bladder 3 to heat the tire 2. When the tire 2 in FIG. 1 is pressed, the tire 2 reaches a predetermined temperature, or when a predetermined time elapses, the supply of the heating medium is stopped, and then a gas such as nitrogen is added. The tire 2 is supplied as a pressure medium at the same pressure as or higher than that of the heating medium until the end of the remaining time of the heating step.
The temperature is maintained at a predetermined temperature to complete the vulcanization. Here, the elastomeric article is a ring-shaped article having a concave portion opening to the inner peripheral surface side like the tire 2.

Then, the upper bladder holding portion 10 has the center post 41
The upper body is provided with a ring body 42, a block body 43, and a blowout nozzle 45 attached to the block body 43. The ring body 42 and the block body 43 are fixed to each other with bolts 12, and the upper clamp is provided. A ring 48 is formed, and the ring body 42 and the block body 43 hold the upper inner end portion 21 of the bladder 3 in a sandwiched manner. Further, the blow-out nozzle 45 has a ring shape as shown in FIG. 4A and is detachably fitted into the block body 43,
An annular space 44 is formed between the block body 43 and the block body 43. Further, the blow-out nozzle 45 is provided with a blow-out port 4 that connects the empty chamber 44 and the vulcanization chamber. And this outlet 4
Are formed along the circumferential direction at predetermined intervals.
The direction, the number, and the diameter of the air outlets 4 are selected to match the tire size.

In addition, a heating medium such as steam is vacant in the block body 43.
A supply passage 40 for supplying to 44 is connected, and the supply passage 40 penetrates the bag well 46 and is connected to the steam source. Therefore, the heating medium from the passage 40 is blown into the vulcanization chamber from the air outlet 4 through the empty chamber 44. The blow-out nozzle 45 has a plurality of blow-out ports 4 that open downward toward a desired portion in a region P extending from the equator (tread center) E inside the tire or the vicinity thereof to the lower side wall portion 24 of the tire 2 or the vicinity thereof. Individually prepared. In the embodiment shown in FIG. 1, as shown by the arrow, the air outlet 4 is open toward the vicinity of the lower part of the equator E, so that the heating medium crosses the tire inner space 6 as shown by the arrow. , Is jetted obliquely downward, the jet flow moves along the inner surface of the tire, passes through the lower side wall portion 24, pushes the drain reservoir toward the lower bead portion 28 side, and the bag well
Discharge into 46. The outlet 4a of the outlet 4 is inclined with respect to the radial direction as shown in FIG. 4B, and the heating medium blown out from the outlet 4 is swirled in the circumferential direction.

Then, in the bagwell 46, a supply passage 50 for supplying a gas such as nitrogen.
And the supply passage 50 is connected to an annular supply relay chamber 51 formed inside the bag well 46. Further, the relay chamber 51 is connected to and connected to a plurality of supply passages 52 arranged in a predetermined gap along the circumferential direction, and a blowout nozzle 54 for blowing out gas is bolted to the upper opening of the supply passage 52. 20
Is removably attached to the upper area of Bagwell 46 via. The supply nozzle 52 has a supply passage 52.
A plurality of air outlets 5 that communicate with the vulcanization chamber are provided at predetermined intervals in the circumferential direction. That is, the pressurized medium from the supply passage 50 enters the plurality of supply passages 52 through the relay chamber 51, and the blowout port 5
Is blown into the vulcanization chamber. This blowing nozzle 54 is
There are a plurality of ring-shaped openings as shown in the drawing, in which the outlets 5 open upward toward a desired portion in a region Q extending from the upper center of the mold 1 to the upper side wall 25 of the tire 2. Individually prepared. In the embodiment shown in FIG. 1, the outlet 5 is open toward the vicinity of the upper side wall portion 25 of the tire 2. Therefore, in this case, the pressurizing medium traverses the tire inner space 6 as indicated by the arrow. It is blown out diagonally upward. As described above, the pressurized medium (gas) is blown from the lower position of the center of the mold 1 toward the upper side wall portion 25 of the elastomer article or the upper opening end edge portion (that is, the upper bead portion) 70. The distance that the flow passes through the tire inner space 6 is long, so that the mixing and stirring effect with the steam is further increased, and the temperature difference in the tire inner space 6 is eliminated. Further, the blown pressure medium is swirled in the circumferential direction,
The outlet 5a is inclined with respect to the radial direction as shown in FIG. 5B.

A drain, steam, and gas discharge passage 23 is provided below the bagwell 46, and its tip portion is open to the internal space 6 of the tire.

Next, a method of vulcanizing the tire 2 as an elastomer article using the apparatus configured as described above will be described.

First, the raw tire 2 is mounted on the outer surface of the bladder, and the shaping medium is supplied through a pipe (not shown) to expand the bladder 3 and bring the tire 2 along the inner surface of the mold, and then the mold is closed.

Next, steam having a pressure of 15 kg / cm ² is supplied to the supply passage 40, and the steam is supplied from the outlet 4 to the vulcanization chamber (that is, the internal space 6 in the bladder 3) for 5 minutes. That is, the steam from the air outlet 4 is blown toward the vicinity of the lower portion of the equator E (that is, the tread center portion) of the tire 2, and as shown by the arrow, most of the steam flows downward along the tire inner surface shape, and further, The jet flows from the lower side wall portion 24 toward the lower bead portion 28.

Therefore, the drain pool at the lower part inside the tire is guided to the discharge passage 23 and discharged by this jet flow, and the temperature of the lower side surface part 24 also rises.

Then, the temperature of the tire 2 is raised by the steam supply to a temperature necessary for proceeding the vulcanization reaction, for example, to about 180 ° C. Then, a pressurized gas having a pressure of 18 kg / cm ² is supplied to the gas supply passage 50 at a low temperature of about room temperature (for example, 40 ° C.), and is jetted upward from the blow-out port 5 into the internal space 6 for 5 minutes. That is, the gas blown upward from the outlet 5 cools and stirs the upper part of the internal space 6, then gradually goes downward and is mixed with the internal steam.

Therefore, the internal space 6 is prevented from having a large temperature difference between the upper portion and the lower portion due to the cooling effect and the mixing action of the upper portion in the tire 2 due to the upward gas flow. Therefore, it is possible to prevent the temperature difference between the upper portion and the lower portion of the internal space from occurring as in the conventional example.

Then, after vulcanization, a valve of a pipe (not shown) is opened to discharge the mixture of gas and steam in the internal space from the discharge line. Next, the valve is closed and the other valves are opened, the upper clamp ring is lowered, and the center post 41, bagwell 46 and lower bladder holding portion 11 are lowered to remove the bladder 3 from the tire 2 and open the mold 1. , Remove the vulcanized tire 2.

In the figure, S represents steam as a heating medium, and G represents gas as a pressurizing medium.

Next, FIG. 2 shows temperatures at a point A of the upper bead portion of the tire and a point B of the lower bead portion thereof, as shown in FIG. That is, the point A shows a temperature tendency as shown in the graph 18 after the gas is supplied, and the point B shows a temperature tendency as shown in the graph 17 after the introduction of the gas. The temperature difference between the two is about 4 ° C, which is higher than the conventional example (13 ° C).
It has decreased significantly.

Next, as shown in FIG. 3, the temperature at the point C of the upper side wall and the point D of the lower side wall of the tire 2 when the apparatus according to the present invention shown in FIG. 1 is used is shown in FIG. Is shown. That is, at the point C, after the gas supply, the graph 18a
The temperature tendency is as shown by, and the point D shows the temperature tendency as shown in the graph 17a after the gas is supplied. The temperature difference between the points C and D is about 3 ° C. (° C) significantly decreased.

Next, FIG. 6 shows another embodiment. In this case, the outlet 4
The heating medium is blown toward the lower side wall portion 24 of the tire 2 so that the heating medium is blown downward from the direction shown in FIG. The other structure is the same as that in FIG. 1, and therefore its explanation is omitted.

Therefore, in this case, the heating medium flows into the lower side wall portion 24 from the lower bead portion 28 as shown by the arrow, and further becomes a jet flow toward the lower vicinity of the tire equator E, and the drain accumulated in the lower side wall portion 24 is Blown off from the lower side wall 24,
Has a pushing effect. That is, the lower side wall portion 24 is prevented from obstructing the heating due to the drain pool.

Further, FIG. 7 shows an embodiment in the case where another rolling-in-bladder type vulcanizing device is used. In this device, the center post 41 is provided with a heating medium (steam) supply passage 40, In addition, the upper bladder holding portion 10 is provided with a plurality of outlet passages 26 ... Which are arranged radially and are connected to the supply passage 40 so as to communicate therewith. A ring-shaped blowing nozzle is provided at the opening of the blowing passage 26.
45 can be attached and removed freely. Also, this blowing nozzle 45
Is a blow-out port 4 for blowing the heating medium obliquely downward toward the tire equator E (tread center portion) as indicated by the arrow.
Is equipped with. Further, if the outlet passage 4a of the outlet 4 is inclined with respect to the radial direction, the heating medium turns in the tire inner space 6 in the circumferential direction.

Further, the bag well 46 is provided with a supply passage 50 for the pressurized medium and a discharge passage 23 for drain discharge, and the supply passage 50
A ring-shaped blow-out nozzle 54 is detachably attached to the opening of the. 30 is a locking bolt. The blow-out nozzle 54 is provided with a plurality of blow-out ports 5 arranged at predetermined intervals in the circumferential direction, and the blow-out ports 5 are the upper side wall portions of the tire 2.
It is opened so that the pressurized medium is blown out toward 25. It should be noted that if the blowout path 5a is inclined with respect to the radial direction, the pressurizing medium turns in the tire inner space 6 in the circumferential direction.

Next, FIG. 8 shows still another embodiment using a so-called bagomatic type (BOM) vulcanizing apparatus. In this apparatus, a center post 41 is provided with a heating medium (steam) supply passage 40, A plurality of supply passages 39 are radially provided in the upper bladder holding portion 10, and the supply passages 39 are connected to the supply passage 40 so as to communicate with each other. And
A ring-shaped blow-out nozzle 45 is detachably attached to the opening of the supply passage 39 with a bolt (not shown), and the blow-out port 4 is obliquely downward from the vulcanization chamber, for example, the tire equator E or the tire equator E thereof. It opens toward the bottom. That is, this nozzle 45 is attached with the nozzle 4 having the optimum direction, diameter and number according to the shape and size of the tire.

Thus, the support body (hub) 60 of the lower bladder holding portion 11 is provided with the supply passage 50 for the pressurized medium (gas), and communicates with the passage 50, and the upper direction of the vulcanization chamber, for example, the upper side. A plurality of outlets 5 ... Are opened in the direction toward the side wall portion 25.
The blow-out ports 5 ... Are provided with blow-out nozzles 54 that are detachably attached to the support body 60 with bolts (not shown). That is, the nozzle 54 having the outlets 5 of the optimum direction, diameter and number according to the shape and size of the tire is attached.

Even in this case, if the blowout passages 5a are respectively inclined with respect to the radial direction, the ejected gas flows out in the inner space 6 of the vulcanization chamber so as to swirl in the circumferential direction, and the steam inside the Mix effectively with.

Further, a discharge passage 9 for steam and gas is formed in the support body 60 of the lower bladder holding portion, the upper end portion of this discharge passage 9 extends in the outer diameter direction, and the tip opening portion thereof is located in the tire inner space 6. It is open at the place.

In the present invention, however, the pressurized medium (gas) may be blown upward from the lower position of the center of the apparatus to the inside of the vulcanization chamber regardless of the blowing position and direction of the heating medium (steam). Good. Here, the lower position of the center of the mold 1 means
For example, in a rolling in bladder type vulcanizer, this is the upper end position of the bag well 46 (as described above), as shown in FIGS. 1 and 7. That is, the blowing nozzle 54 is detachably attached to the upper area of the bag well 46. The blow-out nozzle 54 is provided with a plurality of blow-out openings 5 ... Opening in the circumferential direction from a position above the center of the mold 1 toward a desired portion of the area Q extending from the upper side wall 25 of the tire 2. Has been. In this case, it is preferable that the air outlets 5 ... Are at the same position as or slightly lower than the upper end of the lower bead portion 28 of the tire 2. In the illustrated example, the air outlets 5 ...
28 It is positioned slightly lower than the top edge.

Therefore, the gas is blown directly across the tire inner space 6 directly, the distance that the gas flow passes through this space is increased, the mixing and stirring effect with steam is further increased, and the temperature difference in the tire inner space 6 is increased. Is eliminated.

Further, in the bagomatic type vulcanizer, as shown in FIG. 8, the position below the center of the mold 1 (as described above) is the position above the support 60 of the lower bladder holding portion 11.
That is, the blowing nozzle 54 is detachably attached to the upper portion of the support 60. Then, in the blowing nozzle 54, the area Q
Are provided along the circumferential direction.

Therefore, also in this case, as in the case shown in FIG. 1 and FIG. 7, the distance that the gas flow passes through the tire inner space 6 is long, and the temperature difference in the tire inner space 6 is eliminated.

However, according to the present invention, as shown in FIG. 9, the present invention can be applied to a so-called bladderless type vulcanizer which does not use a bladder. In this case, as shown in FIG. Receive the rings 29, 29.

Further, in this embodiment, the steam blowing mechanism is such that the block body 43 is attached to the head of the center post, the ring-shaped blowing nozzle 45 is attached to the block body 43, and the empty chamber 44 is provided. Is connected to a steam supply passage 40 and the nozzle 45 is provided with an outlet port 4. Further, the gas blowing mechanism is provided with a blowing nozzle 54 in the upper area of the bagwell 46,
The gas supply passage 50 is connected to the blow-out nozzle 54, and the blow-out port 5 is provided in the nozzle 54. That is, the steam is blown downward from the outlet 4 at the upper position, and the gas is blown upward from the outlet 5 at the lower position.

It should be noted that the present invention is not limited to the above-described embodiments, and the design can be freely changed without departing from the scope of the present invention. For example, in FIG. 1, the supply passage 40 for steam is provided in the center post 41. Is also free.

〔The invention's effect〕

 The present invention has the following effects.

According to the method of claim 1 and the device of claim 3,
The heating medium becomes a flow from the equator of the elastomer article or its vicinity to the lower opening end edge portion through the lower side wall portion,
This flow can drain the drain that tends to collect on the lower sidewall of the elastomeric article during vulcanization.

This can prevent the heating delay of the lower side wall portion due to the drain.

Moreover, since the pressurizing medium is blown out from the position below the center of the mold toward the upper side wall of the elastomeric article, the flow of steam (heating medium) into the elastomeric article weakens and then the uneven distribution in the upper part occurs. In addition, the low-temperature gas flow is directed obliquely to the high-temperature steam, and without adiabatically compressing the steam, the jet kinetic energy causes a vertical swirling stirring flow against the steam to eliminate the uneven distribution of high-temperature steam, Due to the temperature gradient in the elastomer article, the upper and lower temperatures of the elastomer article that have become relatively high in temperature can be made uniform.

Therefore, the elastomer article can be uniformly vulcanized, and a high quality product can be provided.

Further, since it is not necessary to separately provide a drain discharge mechanism to discharge the drain, there is an advantage that the entire apparatus is simplified.

Further, by eliminating the temperature difference between the upper and lower sides, the vulcanization time can be shortened, and the productivity can be improved and the energy loss can be reduced.

Further, according to the method of claim 2 and the apparatus of claim 4, the heating medium flows toward the equator through the lower side wall portion of the elastomer article, and tends to collect on the lower side wall portion of the elastomer article during vulcanization. The drain can be blown away by the jet flow and pushed away.

Then, as in the vulcanizing method of claim 1 and the vulcanizing apparatus of claim 3, the pressurizing medium is blown out from the position below the center of the mold 1 toward the upper side wall of the elastomer article. The upper and lower temperatures can be made uniform.

Therefore, also in this case, it is possible to provide a high-quality product, and it is possible to obtain the action and effect such that it is not necessary to separately provide a drain discharge mechanism or the like.

Further, in the heating device in which the blowing nozzles 45 and 54 are replaceable, the blowing nozzles 45 and 54 having the blowing direction corresponding to the shape and size of the elastomer article can be easily attached, and the heating can be performed in the optimum direction and amount. A medium and a pressurized medium can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a vulcanizing apparatus according to the present invention, FIGS. 2 and 3 are graphs showing a temperature difference between elastomer articles, and FIG. 4A is a simplified blowout nozzle for a heating medium. Fig. 4B is a perspective view, Fig. 4B is the same plan view, Fig. 5A is a simplified perspective view of a blowing nozzle for a pressurized medium, Fig. 5B is the same plan view, and Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Fig. 9. FIG. 6 is a sectional view showing another embodiment, respectively.
FIG. 10 is a sectional view of a conventional example. 1 ... Mold, 4, 5 ... Air outlet, 10 ... Upper bladder holding part, 11 ... Lower bladder holding part, 24 ... Lower side wall part,
25 ... Upper side wall, 45,54 ... Blow-off nozzle, 60 ... Support, P, Q ... area.

Front page continuation (51) Int.Cl. ⁵ Identification number Office reference number FI Technical indication location B29L 30:00 4F (72) Inventor Michito Kobayashi 5-9-11 Gogaoka, Toyota City, Aichi Prefecture (72) Inventor Masaaki Ijiri 4-2-1 Shiratori, Shiratori, Togo-cho, Aichi-gun, Aichi 408-407 (72) Inventor Nobuhiko Irie 1-1, Atunoura-cho, Nagasaki-shi, Nagasaki Mitsubishi Heavy Industries, Ltd. (72) Hasegawa Akira 1-1 Nagasaki City Nagano City Nagano Shipbuilding Co., Ltd. Nagasaki Shipbuilding Co., Ltd. (72) Inventor Hideaki Katayama 1-1 Nagasaki City Nagasaki City Nagano City Akinouracho Shipyard Nagasaki Shipyard Co., Ltd. (72) Inventor Murakami Toshifumi 1-1 Nagasaki, Nagasaki, Nagano, Nagasaki, Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Katsuyoshi Sakaguchi Nagasaki, Nagasaki, 1-1, Nagasaki, Mitsubishi Heavy Industries, Ltd., Nagasaki Shipyard (56) References JP-A-2-147207 (JP, A)

Claims (6)

[Claims] 1. A vulcanization chamber of a mold 1 in which an elastomer article is mounted and a heating medium such as steam is supplied to heat and pressurize the elastomer article, and when the elastomer article reaches a predetermined temperature, Or, when a predetermined time has elapsed, supply of the heating medium is stopped, and then an inert gas such as nitrogen is supplied as a pressurized medium at the same or high pressure as the heating medium until the end of the remaining time of the heating step, After the heating process,
In a method for vulcanizing an elastomer article in which a vulcanizing medium, which is a mixture of a heating medium and a pressurizing medium, is discharged to complete vulcanization, a lower opening end is provided from the equator E of the elastomer article or its vicinity through a lower side wall portion 24. A heating medium, which becomes a flow toward the edge portion 28, is sprayed obliquely downward from a position above the center of the mold 1, and the pressure medium is applied from the position below the center of the mold 1 to the upper side wall of the elastomer article. A method for vulcanizing an elastomer article, which comprises spraying obliquely upward toward the portion (25) or the upper opening edge portion (70) thereof. 2. A vulcanization chamber of a mold 1 is equipped with an elastomer article and a heating medium such as steam is supplied to heat and pressurize the elastomer article, and when the elastomer article reaches a predetermined temperature, Or, when a predetermined time has elapsed, supply of the heating medium is stopped, and then an inert gas such as nitrogen is supplied as a pressurized medium at the same or high pressure as the heating medium until the end of the remaining time of the heating step, After the heating process,
In an elastomer article vulcanizing method for completing vulcanization by discharging a vulcanizing medium which is a mixture of a heating medium and a pressurizing medium, a heating medium which becomes a flow toward the equator E through a lower side wall portion 24 of the elastomer article. Is sprayed obliquely downward from a position above the center of the mold 1, and the pressurizing medium is applied from the position below the center of the mold 1 to the upper side wall 25 of the elastomer article or the upper opening edge 70 thereof. A method for vulcanizing an elastomer article, characterized in that the elastomer article is sprayed obliquely upward. 3. When the elastomer article is mounted in the vulcanization chamber of the mold 1 and a heating medium such as steam is supplied to heat and pressurize the elastomer article to reach a predetermined temperature, or When a predetermined time has elapsed, the supply of the heating medium is stopped, and then an inert gas such as nitrogen is supplied as a pressurized medium at the same or higher pressure as the heating medium until the end of the remaining time of the heating step. In a vulcanization device for an elastomer article that maintains the temperature of the elastomer article at a predetermined temperature, a heating medium that becomes a flow from the equator E of the elastomer article or its vicinity through the lower side wall portion 24 toward the lower opening end edge portion 28 is slanted downward. Outlet 4 for heating medium
Is formed on the upper bladder holding portion 10 or the center post head arranged at a position above the center of the mold 1, and
A pressurizing medium outlet 5 for spraying the pressurizing medium obliquely upward from a position below the center of the mold 1 toward the upper side wall 25 of the elastomer article or the upper opening edge 70 thereof.
Is a bag well arranged at a position below the center of the mold 1.
46 or a device for vulcanizing an elastomer article, which is formed on the lower bladder holding portion 11. 4. When the elastomer article is mounted in the vulcanization chamber of the mold 1 and a heating medium such as steam is supplied to heat and pressurize the elastomer article to reach a predetermined temperature, or When a predetermined time has elapsed, the supply of the heating medium is stopped, and then an inert gas such as nitrogen is supplied as a pressurized medium at the same or higher pressure as the heating medium until the end of the remaining time of the heating step. In a vulcanization device for an elastomer article for maintaining the temperature of the elastomer article at a predetermined temperature, a heating medium outlet 4 for blowing a heating medium obliquely downward, which becomes a flow toward the equator E through the lower side wall portion 24 of the elastomer article. Is formed in the upper bladder holding portion 10 or the center post head arranged above the center of the mold 1, and the pressure medium is located below the center of the mold 1. From the upper side wall portion 25 of the elastomer article to the upper opening end edge portion 70 of the elastomer article, and a blowout port 5 for the pressurized medium is provided at a position below the center of the mold 1 in the bag well. 46 or a device for vulcanizing an elastomer article, which is formed on the lower bladder holding portion 11. 5. The elastomer article vulcanizing apparatus according to claim 3, wherein the heating medium outlet 4 is formed in a detachable outlet nozzle 45. 6. The elastomer article vulcanizing apparatus according to claim 3, wherein the pressure medium outlet 5 is formed in a detachable outlet nozzle 54.