JP3536803B2 - Continuous vulcanization equipment for rubber hose and method for producing rubber hose using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION

The present invention relates to a rubber hose continuous vulcanizing apparatus and a method for manufacturing a rubber hose using the same.

[0002]

2. Description of the Related Art Conventionally, a rubber hose has been manufactured by winding an unvulcanized rubber hose extruded on an outer peripheral surface of a mandrel onto a drum after applying a resin coating on the outer peripheral surface thereof, and then winding it on a heating furnace (vulcanization) After heating and vulcanization in a can for a set time, the drum is taken out of the heating furnace, and then the mandrel and the coating resin are removed from the rubber hose after vulcanization.

[0003] However, this production method is a batch system in which vulcanization is performed in a heating furnace for each drum around which an unvulcanized rubber hose is wound, and the drum is placed before and after the heating furnace in addition to the problem of poor efficiency. Is necessary, and they occupy a large space together with the heating furnace.

On the other hand, various facilities have been proposed for continuously vulcanizing an unvulcanized rubber hose. As one of them, a vulcanization method has been proposed in which an unvulcanized rubber hose is continuously fed and immersed in a molten salt as a heating medium to perform vulcanization continuously.

[0005] However, in the case of this equipment, the line length becomes extremely long, and the equipment itself becomes extremely expensive, which makes the equipment itself very expensive, and the equipment occupies a large space. is there. In addition to the need for a washing step after immersion in the molten salt,
There is a problem that the number of times that the coating resin can be recycled is small and the running cost is high.

On the other hand, as shown in FIG. 7, a large number of pulleys are arranged in a heating furnace in two rows, and unvulcanized rubber hoses are continuously wound therearound. While the vulcanized rubber hose is continuously moved in the heating furnace, it is retained in the heating furnace for a set time, during which time the unvulcanized rubber hose is heated and vulcanized, and then the vulcanized rubber hose from the last pulley is vulcanized. Has been proposed to take out of the heating furnace.

In the figure, reference numeral 200 denotes a pulley in the first row;
Represents a pulley in the second row, and an unvulcanized rubber hose 2
04 is the pulley 2 in the second row from the pulley 200-1 in the first row
After moving to 02-1, it further moves from pulley 202-1 to pulley 200-2, further to 202-2, and moves to final pulley 202-n. And it is taken out of the heating furnace from the last pulley 202-n.

[0008]

However, even this vulcanizing equipment has a problem that the equipment becomes large and occupies a large space. In the case of this vulcanization equipment, the part wound around the pulley of the unvulcanized rubber hose is
One half is in direct contact with the pulleys and is not directly exposed to hot air, so the first row of pulleys and the second row of pulleys must be spaced sufficiently apart to expose the entire hose to hot air. Must. Further, in each of the pulleys in the first row and the pulley in the second row, the interval between the pulleys is inevitably set to a certain interval or more.

Therefore, in the case of this equipment, for example, a length of 600
The rubber hose must always stay in the heating furnace for more than m, and the space between the pulleys is widened, and the vulcanization equipment itself is inevitably increased in size. Further, in this vulcanizing equipment, the pulley itself is large (for example, about 2 m in diameter), the cost required for the pulley is high (about 600,000 yen per one), and the equipment cost is high.

Further, when the rubber hose expands due to heating in the heating furnace, there is a problem that the rubber hose falls off from the pulley (removal of the wheel). To prevent this, the tension of the rubber hose between the pulley and the pulley is properly controlled. And a complicated mechanism for it are required, and the running cost is high in addition to the equipment cost.

Further, the unvulcanized rubber hose has a large area,
Since the rubber hose comes into direct contact with the pulley over its length, there is a problem in terms of uniform heating of the rubber hose, and also a problem in the stability of the quality of the obtained vulcanized rubber hose.

[0012]

SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem. Claim 1 relates to a continuous vulcanization facility for rubber hoses.
(B) a heating furnace, (b) a vertical rotating body having a vertical axis rotatably housed inside the heating furnace, and (c) rotating the vertical rotating body about the vertical axis. A driving device, the vertical rotating body includes a plurality of vertical bars arranged at predetermined intervals in a circumferential direction along a virtual circumferential surface, and fixedly fixes upper and lower portions of the plurality of vertical bars. A pair of holding members for holding the vertical bars, and by rotating the vertical rotating body with the driving device, unvulcanized rubber hoses are continuously connected to the upper and outer peripheries of the vertical bars arranged in the circumferential direction. And the wound hose is sequentially shifted downward by its own weight, and the vulcanized hose can be sent out from the lower part.

According to a second aspect of the present invention, in the first aspect, the holding member is an annular frame.

According to a third aspect of the present invention, there is provided a supply guide having a hose insertion hole for supplying the unvulcanized rubber hose to an upper portion and an outer periphery of the vertical rotating body according to any one of the first and second aspects. Is provided at a fixed position near the side of the upper outer periphery of the vertical rotating body.

According to a fourth aspect of the present invention, in the first aspect, the unvulcanized rubber hose supplied to an upper outer periphery of the vertical rotary body is provided below the vertical rotary body. And a guide retainer which guides the vertical rotating body and exerts a downward pressing force with the rotation of the vertical rotating body is provided near the side of the upper outer periphery of the vertical rotating body.

According to a fifth aspect of the present invention, in any one of the first to third aspects, at least a surface layer of the vertical bar is made of a sliding material.

[0017] What according to claim 6, the vertical guide bar in any one of claims 1 to 5, which further located outside the hose in the state wound around the outer peripheral side of the front Kitate bars falling off prevents the hose Is provided.

A seventh aspect of the present invention relates to a method of manufacturing a rubber hose, comprising: extruding an unvulcanized rubber hose into a long length along the outer peripheral surface of a flexible mandrel; Coating the outer periphery of the rubber hose with a coating material, and continuously inserting the unvulcanized rubber hose coated with the coating material into a heating furnace and rotatably housed inside the heating furnace. A vertical rotating body having a plurality of vertical bars arranged at predetermined intervals in the circumferential direction between the upper holding member and the lower holding member is sequentially wound downward from the upper part of the outer periphery of the rotating body, and the wound rubber hose has its own weight. Moving the rubber hose downward and continuously removing it from the lower part, and vulcanizing the rubber hose by retaining the rubber hose in the heating furnace for a set time from the insertion to the removal, and after the vulcanization taken out of the heating furnace From the hose Characterized in that it comprises a step of removing the timber and mandrel, the.

According to an eighth aspect of the present invention, in accordance with the seventh aspect, a dummy hose having a predetermined length is connected to a tip end of the unvulcanized rubber hose so that the tip of the unvulcanized rubber hose is heated. The time from insertion into the furnace to removal from the furnace is set to the set time.

According to a ninth aspect, there is provided one of the seventh and eighth aspects.
Extruding the unvulcanized rubber hose into a long length
A wire reinforcing layer between the inner rubber layer and the outer rubber layer.
Forming and vulcanizing.
Prior to the heating, the unvulcanized rubber
The wire reinforcement layer is guided while the wire is continuously supplied.
Heating and heating the unvulcanized rubber hose from the inside to raise the temperature.
The method is further characterized by further comprising a preheating step of performing a preheating step.

[0021]

As described above, the continuous vulcanizing equipment according to claim 1 comprises a plurality of vertical bars arranged at predetermined intervals along a circumferential surface and a holding member for holding the vertical bars at upper and lower portions. The vertical rotating body provided is housed inside the heating furnace, and the unvulcanized rubber hose inserted into the heating furnace is continuously connected to the outer peripheral side of the tower-type vertical rotating body, specifically, to a plurality of vertical bars. While being wound, the hose after being vulcanized in the wound state is continuously discharged from the lower part.In the case of this vulcanization equipment, the unvulcanized wound around the vertical rotating body The rubber hose can be sufficiently exposed (contacted) to the hot air inside and outside the vertical rotating body at the portion between the vertical bars,
The heat from the hot air can be efficiently and sufficiently applied to the unvulcanized rubber hose.

That is, the unvulcanized rubber hose only slightly touches the vertical bar when it is wound around the vertical rotating body, and substantially the most part is exposed to hot air. Thereby, the unvulcanized rubber hose can be uniformly heated in the heating furnace, and the quality of the vulcanized hose becomes stable.

Further, since heat can be efficiently and favorably applied to the unvulcanized rubber hose in the heating furnace, the vulcanization time can be shortened. In the present invention, the heating medium in the heating furnace is not limited to the above-described hot air, and heating steam may be used, or liquid may be used in some cases.

In the present invention, since the unvulcanized rubber hose can be wound around the vertical rotating body in a state of being closely attached to the upper and lower sides, the vertical rotating body itself may be small, so that the vulcanization equipment It can be made compact.

In addition, since the vertical rotating body only needs to include a plurality of vertical bars and a holding member for holding the vertical bars, the structure is simple, and the vertical rotating body can be reduced in size and the equipment cost can be reduced. It can be cheap.

In the vulcanizing equipment of the present invention, the rubber hose wound around the vertical rotating body is gradually moved downward along the vertical bar by utilizing its own weight. The thermal expansion of the rubber hose then serves to aid its migration.

That is, in the conventional continuous vulcanizing equipment using the pulleys shown in FIG. 7, the expansion of the rubber hose causes the wheels to come off from the pulleys, which hinders smooth hose feeding. On the contrary, the rubber hose thermally expands to reduce the friction between the rubber hose and the vertical bar, which causes the rubber hose wound around the vertical bar to move smoothly downward, and the thermal expansion of the rubber hose itself is a smooth hose feed To achieve.

Therefore, according to the present invention, the supply guide for supplying the unvulcanized rubber hose to the upper part of the vertical rotating body through the hose insertion hole is fixed at a position near the side of the outer periphery of the upper part of the vertical rotating body. A complicated traverse mechanism for sequentially winding the unvulcanized rubber hose around the vertical rotating body from the lower side to the upper side by sequentially shifting the supply guide from the lower side to the upper side can be provided. Although not particularly required (claim 3), this also contributes to the realization of a simplified vulcanization facility.

Here, the holding member can be an annular frame (claim 2). Further, the holding member can be arranged at the upper and lower ends of the plurality of vertical bars, and the upper and lower ends of each vertical bar can be fixed to the holding member. The annular frame may be a circular frame, that is, a circular frame.

Next, a fourth aspect of the present invention is to vertically guide the unvulcanized rubber hose supplied to the upper part of the vertical rotary body and to apply a guide presser which exerts a downward pressing force with the rotation of the rotary body. It is provided near the side of the upper outer periphery of the mold rotating body, and by the action of this guide press, a downward force is exerted on the rubber hose wound around the vertical rotating body,
The downward movement of the rubber hose due to its own weight can be assisted.

That is, by providing the guide retainer, it is possible to realize a smoother automatic feed of the rubber hose wound around the vertical rotary body downward. In this case, at least the surface layer of the vertical bar can be made of a slippery material such as Teflon (registered trademark) or the like (claim 5). In this case, the vertical bar is wound around the vertical rotating body. The rubber hose can be moved downward (sending) using its own weight more smoothly.

In the vulcanizing facility of the present invention, a vertical guide bar for preventing the rubber hose from falling off is provided at a position further outside the rubber hose wound around the outer peripheral side of the vertical bar in the vertical rotating body. (Claim 6).
By doing so, the rubber hose can be guided and held between the guide bar and the vertical bar.

According to a seventh aspect of the present invention, there is provided a method for producing a rubber hose using the above-mentioned equipment. According to this method, the rubber hose is efficiently produced with a short vulcanization time by utilizing the advantages of the above-mentioned vulcanization equipment. It can be carried out.

In this case, a dummy hose having a predetermined length can be connected to the tip of the unvulcanized rubber hose. By doing so, the yield can be increased.

Next, the ninth aspect of the present invention precedes the vulcanizing step.
Induction heating of the wire reinforcement layer of the unvulcanized rubber hose,
Preliminary heating of unvulcanized rubber hose from inside by heating
The heating step is performed, and in this way, the unvulcanized
The rubber hose must be preheated before vulcanization.
Therefore, the vulcanization time during vulcanization can be shortened.
Wear.

[0036]

An embodiment in which the present invention is applied to the production of a high-pressure rubber hose containing a wire reinforcing layer will be described in detail with reference to the drawings. First, in FIG. 1, reference numeral 10 denotes a high-pressure rubber hose containing a wire reinforcing layer, and an inner rubber layer 12 is provided.
And an outer rubber layer 14 and a wire reinforcing layer 16 therebetween. Here, the inner rubber layer 12 has an inner diameter of 9.
The outer rubber layer 14 has an outer diameter of 14.7 mm and a thickness of 0.9 mm, and has an outer diameter of 12.1 mm and a thickness of 1.4 mm.

FIG. 1 shows a rubber hose 10 in the course of manufacturing, 18 shows a flexible mandrel, and 2 shows a mandrel.
0 denotes a coating layer that covers the entire rubber hose 10. In this example, both the mandrel 18 and the coating layer 20 are made of a resin material.

FIG. 2 shows a continuous vulcanizing facility for vulcanizing the rubber hose 10. As shown in the figure, the vulcanizing equipment 22 has a heating furnace 24 and a vertical rotating body 26 housed therein. Reference numeral 28 denotes a frame for rotatably supporting the vertical rotary body 26. The frame 28 has a rectangular frame-shaped base 30 at the lower end thereof.
On the top, two portal-shaped support members including a vertical column portion 28a and a beam portion 28b are installed at 90 ° apart in the circumferential direction.

The vertical rotating body 26 has a circular upper annular frame 32 and a lower annular frame 34, each of which is circular, and these are connected by vertical bars 36 arranged at predetermined intervals in the circumferential direction. Specifically, the vertical rotating body 26 has a number of vertical bars 36 arranged at predetermined intervals along the circumferential surface,
The upper ends of the vertical bars 36 are fixed to the upper annular frame 32,
The lower ends are fixed to the lower annular frame 34, respectively.
In this example, each vertical bar 36 is made of a Teflon material having a good slip.

The vertical rotating body 26 also has a rotating shaft 38 vertically arranged at the center thereof.
The upper end and the lower end of the
It is rotatably supported between b and the base 30. That is, the vertical rotating body 26 is rotatably supported by the frame 28 at the upper and lower ends of the rotating shaft 38.

The upper ends of the plurality of vertical bars 36 are fixed to the outer peripheral surface of the upper annular frame 32, and the lower ends are fixed to the inner peripheral side of the upper surface of the lower annular frame 34. Here, the annular upper surface of the lower annular frame 34 is configured as a support surface 40 that supports the rubber hose 10 wound around the outer periphery of the vertical rotary body 26 many times as shown in FIG.

Reference numeral 42 denotes a motor for rotating and driving the vertical rotary body 26 around a vertically extending central axis, which is mounted on a mounting plate 44. Preferably this motor 42
Is connected via a belt 46 to a disk 48 fixed to the rotating shaft 38 of the vertical rotary body 26, and the driving force of the motor 42 is transmitted to the disk 48. Thus, the vertical rotary body 26 is driven to rotate about the axis thereof together with the rotary shaft 38.

Reference numeral 50 denotes a supply guide which is fixed at a predetermined height of a vertical column 28a provided near the outer periphery of the vertical rotary body 26 and has a cylindrical shape.
Two. That is, the supply guide 50 is disposed near the side of the upper outer periphery of the vertical rotating body 26. Heating furnace 2
The rubber hose 10 inserted into the inside 4 is supplied to the vertical rotary body 26 through the hose insertion hole 52 in the supply guide 50, and is supplied to the outer periphery thereof, specifically, the vertical bar 36 provided in the circumferential direction. It is wound along.

A guide holder 54 for guiding the supplied rubber hose 10 downward and exerting a downward pressing force is fixed to the adjacent vertical column portion 28a at a position below the supply guide 50 by a predetermined distance. I have. This guide presser 5
The lower surface 4 has a guide surface 56 that is inclined or curved obliquely upward at the distal end portion of the lower surface, and has a horizontal pressing surface 58 at the proximal end portion.

In FIGS. 2 and 3, reference numeral 75 denotes a beam 28.
b is a guide bar attached and supported. The guide bar 75 is located outside the rubber hose 10 wound around the vertical rotary body 26, and
0 functions to prevent falling from the vertical rotating body 26.

FIG. 3 shows a state in which the rubber hose 10 is continuously vulcanized using the continuous vulcanizing equipment 22. As shown in the figure, in this vulcanizing facility, the supplied unvulcanized rubber hose 10 is supplied from a supply guide 50 to the vertical rotary body 26, and the peripheral hose is rotated along with the rotation of the vertical rotary body 26. It winds continuously around the outer periphery of the vertical bar 36 arranged in the direction. At the same time, the hose 10 is continuously taken out from the lower part of the vertical rotary body 26.

The unvulcanized rubber hose 10 wound around the vertical rotary body 26 gradually moves downward while maintaining the wound state by its own weight by taking out the rubber hose 10 from the lower part of the vertical rotary body 26. Go and turn body 26
After being moved to the lower end of the rotating body 26, the rotating body 26 is taken out to the outside. During this time, the unvulcanized rubber hose 10 stays inside the heating furnace 24 for a set time, and during the stay, heating is performed by hot air inside the heating furnace 24 to perform vulcanization.

In FIG. 3, reference numeral 10A denotes a dummy hose.
By connecting to the tip of the rubber hose 10, the tip of the rubber hose 10 can be kept wound around the vertical rotary body 26 for the set vulcanization time. That is, the portion on the tip side of the rubber hose 10 can be heated and vulcanized inside the heating furnace 24 for a set time.

In the continuous vulcanization facility of this embodiment, the unvulcanized rubber hose 10 is supplied to the vertical rotary body 26 from a fixed height through a supply guide 50 and is wound. Therefore, if the frictional force between the vertical bar 36 and the unvulcanized rubber hose 10 is large, the frictional force at the beginning of the winding causes the rubber hose 10 in the lower position and the rubber hose 10 in the upper position.
May temporarily form a gap.

However, in the vulcanizing equipment 22 of this embodiment, the guide retainer 54 is provided, and a downward force is exerted on the rubber hose 10 wound around the vertical rotary body 26 with the rotation of the rotary body 26. Also vertical bar 36
Is made of a slippery Teflon material, so that the unvulcanized rubber hose 10 additionally supplied is connected to the heating furnace 2.
The uncured rubber hose 10 wound around the upper part of the vertical rotating body 26
After that, the body moves smoothly downward by its own weight, and is wound around the rotating body 26 in a state of being in close contact with each other.
That is, in the vulcanizing equipment 22 of this example, the supplied unvulcanized rubber hose 10 is smoothly fed downward by the above-described action, and is automatically wound around the rotating body 26 in a state of being in close contact with each other. Go.

FIGS. 4 and 5 show a manufacturing process of the hose 10. In this manufacturing method, as shown in FIG. 4, the mandrel 18 wound around the drum 60 is continuously taken out, and the extruder 62 first extrudes rubber on the outer peripheral surface of the mandrel 18 to form the inner rubber layer 12. I do.

Next, the inner rubber layer 12 is
After the adhesive is applied to the outer peripheral surface of the inner rubber layer 12, a conductive wire 70 is braided on the outer peripheral surface of the inner rubber layer 12 by a braider 68 in a subsequent step. The wire reinforcing layer 16 is formed. Then, it is wound around the drum 72.

Subsequently, as shown in FIG. 5, the intermediate product having the inner rubber layer 12 and the wire reinforcing layer 16 formed on the outer peripheral surface of the mandrel 18 is continuously extruded while continuously being taken by the take-off machines 74 and 86. The outer rubber layer 14 is continuously extruded on the outside of the wire reinforcing layer 16 by the machine 76.

After passing through the vacuum layer 78, the resin material is extruded by the resin extruder 80, and the coating layer 20 is continuously formed on the outer peripheral surface of the outer rubber layer 14. Then, after passing this through a cooling water tank 82, induction heating is performed by a high frequency induction heating device 84, and preliminary heating is performed prior to vulcanization performed later.

FIG. 6 shows a main part of the high-frequency induction heating device 84. As shown in FIG. 6, the high-frequency induction heating device 84 has a coil 98 at the tip of an arm 96. By passing the rubber hose 10 through the inside of the coil 98, the wire reinforcing layer 16 is heated by the electromagnetic induction action.

The preheating by the high frequency induction heating device 84 has the following meaning. In the step shown in FIG. 4, if the wire 70 is braided on the outer peripheral surface immediately after extruding the inner rubber layer 12 to form the wire reinforcing layer 16, the inner rubber layer 12 is crushed by the tension of the wire 70. . Therefore, in order to prevent the inner rubber layer 12 from being crushed, the inner rubber layer 12 is cooled with liquid nitrogen and then braided to form the wire reinforcing layer 16.

To perform such a treatment, the vulcanizing equipment 22
Immediately before performing vulcanization, the inside of the unvulcanized rubber hose 10 including the inner rubber layer 12 is in a somewhat cold state. Therefore, in this manufacturing method, the high-frequency induction heating device 84
By performing the induction heating by the unvulcanized rubber hose 10
Is preliminarily heated from the inside (preliminary heating). By performing this preheating, vulcanization in the vulcanization facility 22 can be completed in a short time.

The preheated unvulcanized rubber hose 1
Subsequently, 0 is sent to the tower-type vertical rotating body 26 inside the vulcanizing equipment 22 by the feeding device 88, and is continuously wound from the upper part thereof. As described above, the unvulcanized rubber hose 10 wound around the vertical rotator 26 gradually moves downward by its own weight with the rotation of the vertical rotator 26, and moves from the lowermost portion of the vertical rotator 26. The sheet is taken out to the outside by the take-off machine 90,
The resin coating layer 20 is peeled off by the
It is continuously wound by 4. Note that the mandrel 18 is thereafter removed, where the high-pressure hose product after vulcanization is obtained.

As described above, in this embodiment, the unvulcanized rubber hose 10 wound around the vertical rotary body 26 is connected to the vertical bar 36 and the vertical bar 3.
6 can be brought into sufficient contact with the hot air in the heating furnace, and the heat from the hot air can be efficiently and sufficiently applied to the unvulcanized rubber hose 10. As a result, the unvulcanized rubber hose 10 can be uniformly heated in the heating furnace 24, and the quality of the rubber hose 10 after vulcanization becomes stable, and heat is efficiently and well applied in the heating furnace 24. Therefore, the vulcanization time can be shortened.

The unvulcanized rubber hose 10 is connected to the vertical rotating body 2
6, the vertical rotating body 26 itself can be small, and therefore the vulcanizing equipment 22 itself can be made compact. Costs can be reduced.

In this example, the friction between the hose 10 and the vertical bar 36 is reduced by the thermal expansion of the hose 10, whereby the hose 10 wound around the vertical bar 36 smoothly moves downward, The thermal expansion itself of 10 realizes smooth hose feeding. In addition, by providing the surface layer of the vertical bar 36 with a sliding material such as Teflon having a good sliding property and by providing the guide presser 54, a smoother downward movement of the hose 10 wound around the vertical rotary body 26 can be achieved. Automatic feed can be realized.

In this embodiment, a complicated traverse mechanism for sequentially winding the unvulcanized rubber hose 10 upward from the lower side around the vertical rotary body 26 is not particularly required. This contributes to the simplification of equipment.

In the present embodiment, a dummy hose 10A having a predetermined length is connected to the end of the unvulcanized rubber hose 10 for vulcanization, so that the yield can be increased.

Since the unvulcanized rubber hose 10 is supplied into the vulcanization equipment 22 in a state of being preheated by the high-frequency induction heating device 84, the vulcanization time can be further shortened, and Manufacturing can be made even more efficient.

Although the embodiments of the present invention have been described in detail, this is merely an example, and the present invention can be configured and implemented in various modified forms and modes without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a view showing a rubber hose with a wire reinforcing layer to which the present invention is applied in a state in which the rubber hose is being manufactured.

FIG. 2 is a view showing a continuous vulcanizing facility according to one embodiment of the present invention.

FIG. 3 is a view showing a state in which continuous vulcanization is performed using the continuous vulcanization equipment of FIG. 2;

FIG. 4 is a view showing some steps of a hose manufacturing method of the present invention.

FIG. 5 is a view showing a step following the step shown in FIG. 4;

6 is a diagram showing a configuration of a main part of the high-frequency induction heating device in FIG. 5;

FIG. 7 is a diagram showing an example of a conventional continuous vulcanization facility.

[Explanation of symbols]

10 Rubber hose 10A dummy hose 16 Wire reinforcement layer 18 Mandrel 20 Coating layer 22 Vulcanizing equipment 24 heating furnace 26 Vertical rotating body 28 frames 32 Upper annular frame 34 Lower annular frame 36 vertical bar 38 Rotation axis 42 motor 50 Hose input guide 52 Hose insertion hole 54 Guide retainer 75 Guide Bar 84 High frequency induction heating device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI B29L 23:00 B29L 23:00 (56) References JP-A-5-138662 (JP, A) JP-A-55-140542 (JP) , A) (58) Fields studied (Int. Cl. ⁷ , DB name) B29C 35/00-35/14 B29C 47/04 F16L 11/04

Claims (9)

(57) [Claims] 1. A heating furnace; and (B) a vertical rotating body having a vertical axis rotatably housed inside the heating furnace;
(C) a drive device for driving the vertical rotary body to rotate about the vertical axis, wherein the vertical rotary body is disposed at predetermined intervals in a circumferential direction along the virtual circumferential surface, and An unvulcanized rubber hose comprising: a vertical bar; and a pair of holding members for fixing the upper and lower portions of the plurality of vertical bars and holding the vertical bars, and rotating the vertical rotary body by the driving device. Are continuously supplied to the upper and outer peripheries of the vertical bars arranged in the circumferential direction and wound, and the wound hose is sequentially shifted downward by its own weight, and the vulcanized hose is sent out from the lower portion. Continuous vulcanizing equipment for rubber hoses. 2. The rubber hose continuous vulcanizing equipment according to claim 1, wherein the holding member is an annular frame. 3. A supply guide provided with a hose insertion hole for supplying the unvulcanized rubber hose to an upper portion and an outer periphery of the vertical rotary body according to claim 1 , wherein the vertical guide is provided with a hose insertion hole. A continuous vulcanizing facility for rubber hoses, which is fixedly provided near the side of the upper outer periphery of the body. 4. The vertical rotating body according to claim 1, wherein the unvulcanized rubber hose supplied to an upper outer periphery of the vertical rotating body is guided downward, and A continuous vulcanizing facility for rubber hoses, characterized in that a guide presser that exerts a downward pressing force with the rotation of the vertical rotary body is provided near the side of the upper outer periphery of the vertical rotary body. 5. The continuous vulcanizing equipment for a rubber hose according to claim 1, wherein at least a surface layer of the vertical bar is made of a sliding material. 6. In any one of claims 1 to 5, before the Kitate further positioned outside the bar periphery of the state wound around the side hose of vertical guide bars for drop-off preventing the hose is provided Rubber hose continuous vulcanization equipment. 7. A step of extruding an unvulcanized rubber hose into a long length along the outer peripheral surface of a flexible mandrel, and covering the outer periphery of the extruded long unvulcanized rubber hose with a coating material. An upper holding member and a lower holding member rotatably housed inside the heating furnace by continuously inserting the unvulcanized rubber hose coated with the coating material into the heating furnace. A vertical rotating body provided with a plurality of vertical bars arranged at predetermined intervals in the circumferential direction is sequentially wound downward from the upper part of the outer periphery, and the wound rubber hose is moved downward by its own weight and continuously from the lower part. Removing the rubber hose from the heating furnace, and vulcanizing the rubber hose from the heating furnace for a set time, and removing the coating material and the mandrel from the vulcanized hose removed from the heating furnace. And a process Method for producing a rubber hose, characterized in that there. 8. The method according to claim 7, wherein a dummy hose having a predetermined length is connected to a tip end of the unvulcanized rubber hose so that the tip of the unvulcanized rubber hose is inserted into the heating furnace. A method for producing a rubber hose, characterized in that the time from the end to the removal is set to the set time. 9. The method according to claim 7, wherein
The process of extruding a vulcanized rubber hose into a long length is the inner rubber
Forming a wire reinforcing layer between the outer rubber layer and the outer rubber layer.
Prior to the vulcanizing step,
The unvulcanized rubber hose is continuously supplied to the wave induction heating device.
While feeding, induction heating the wire reinforcing layer, the unvulcanized
Pre-heating process for heating the rubber hose from inside and raising the temperature
A method for producing a rubber hose, further comprising:
Law.