KR100248635B1 - A vulcanization press having a nozzle for injecting a release agent - Google Patents

Abstract

A vulcanizer having a releasing agent injection nozzle according to the present invention includes a plurality of arms fixed to a rotating shaft, and each vulcanizer for unloading a tire which has been completed by a unloader movable up and down from the vulcanizer, wherein each arm Release agent injection nozzles are installed at the end and the middle portion of the rotating shaft and the portions where the respective arms intersect with each other, so that the outer surface of the bladder is separated from the tire while the unloader is raised to unload the vulcanized tire. It is characterized by spraying a release agent to.

Description

Vulcanizer with release agent injection nozzle

The present invention relates to a vulcanizer having a releasing agent injection nozzle, in particular, a releasing agent is evenly sprayed inside the green tire, and a releasing agent injection nozzle equipped with a releasing agent injection nozzle such that the sprayed release agent can be sufficiently dried before the start of vulcanization of the green tire. It is about.

In general, the green tire is also called a green case and refers to a green tire completed only in a structural aspect through a molding process. The raw tire is pressurized and heated in the vulcanizer, and a vulcanization process is performed. Only after the vulcanization process is a tire having rubber characteristics of the actual tire suitable for driving.

Meanwhile, in the vulcanizer, the green tire is inserted between the upper mold and the lower mold, and the rubber pocket called a bladder is inflated inside the green tire to heat the green tire while pressing the green tire toward the mold side, and the bladder is steamed therein. Hot water is supplied to heat and press the green tires.

However, as described above, the bladder is a kind of rubber bag made of isobutylene isoprene rubber, generally called butyl rubber, or made of a polymer halogenated at the end thereof, so that the green surface of the green tire is heated and pressed. Bladder sticks to the inner surface of the tire, that is, the inner liner surface.

When the bladder is pressed against the inner surface of the green tire, the bladder and the tire are not separated from each other, so that it is not easy to remove the tire from the vulcanizer, and the target green tire after the waiting process is introduced into the vulcanizer. There was a problem that the work process is delayed by the number.

Therefore, before the vulcanization process, a release agent is applied to the inner surface of the green tire in advance to prevent the bladder from being pressed onto the green tire during vulcanization so that the bladder and the green tire can be separated smoothly after vulcanization. Doing.

However, in order to apply the release agent to the inner surface of the green tire as described above, not only a separate release agent injection device is required, but also the green tires are transported to the release agent injection device and the place where the release release agent green tire is dried (the release agent is not properly dried Otherwise, the inner surface of the tire becomes poor), and since the dried green tires must be transported with a vulcanizer, a lot of space is required, and many additional facilities such as a conveyer and a conveyor are needed to maintain and repair the facility. It became expensive.

Therefore, in order to solve the above-mentioned difficulty, US Patent No. 5,556,558 of GOOD YEAR Co., Ltd. is equipped with a nozzle for injecting a release agent to the loader shoe at the end of the loader for transporting the green tires, so that the loader can insert the green tire into the mold. When transporting, the release agent is injected from the nozzle to fill the release agent between the bladder and the green tire, thereby allowing the tire to be easily separated from the bladder at the end of vulcanization, thereby solving the above-mentioned problems caused when using a separate release agent injection facility. It was.

However, in the Goodyear patent, the injection nozzle is installed at a position corresponding to the upper side of the green tire, so that the amount of the release agent is applied to the upper layer portion of the bladder, etc., relatively higher than the other portion, and the release agent flows to the bottom, Inner liner portions corresponding to the sidewalls and the bead portions of the upper side of the tire were relatively less in the amount of release coating, resulting in a problem of inferior tires as the amount of release coating was uneven between each part of the green tire.

In addition, when the vulcanization process is performed while the release agent filled between the green tire and the bladder is not completely dried, the inside of the tire is deteriorated due to moisture, and a sufficient drying time is required to prevent this, so the process is delayed. There was another issue of becoming.

Accordingly, the present invention has been made to solve the above problems, by changing the installation position of the spray nozzles, the release agent is evenly applied to each part of the green tire, and the release agent can be dried quickly after application of the release agent is vulcanized It is an object of the present invention to provide a vulcanizer having a release agent injection nozzle in which a tire after the end is smoothly separated from the bladder and a defect does not occur on the inner surface of the tire.

1 is a longitudinal sectional view of a tire vulcanizer,

Figure 2 is a plan view of the center of the vulcanizer equipped with a release agent injection nozzle according to the present invention.

* Explanation of symbols for the main parts of the drawings

1-upper mold, 2-press,

3-Hamold, 4-Green Tire,

5-sink, 6-loader,

7-loader shoe, 8-bladder,

9-lower ring, 10-upper ring,

11-Unloader, 12-Center Post,

13-conveyor, 14-nozzle,

15-pivot, 16-arm,

17-roller.

The present invention for achieving the above object, in the vulcanizer having a plurality of arms fixed to the rotating shaft and unloaded tire from the vulcanizer by the unloader movable up and down, each of the arms Release agent injection nozzles are installed at the end, the intermediate portion, and the portions at which the pivot shaft and the arms intersect, so that the outer surface of the bladder is separated from the tire while the unloader is raised to unload the tire which has been fully vulcanized. Provided is a vulcanizer with a spray nozzle, characterized in that for spraying a release agent.

Therefore, since the release agent is evenly sprayed on the contact surface between the bladder and the green tie, the separation of the bladder and the green tire is very easy after the end of vulcanization, and the drying is performed quickly after the release of the release agent, so that defects due to undriing of the release agent are eliminated. It does not occur, and there is an effect of shortening the running time of the vulcanization process.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of a vulcanizer in a state in which the tire is separated from the mold of the vulcanizer at the end of vulcanization of the tire, and the upper mold 1 is opened.

In the vulcanizer, the upper mold 1 is moved by the press 2 to seal the lower mold 3 to create a closed space in which the green tire 4 is vulcanized, and the green tire 4 flows into the space. The green tire is to be released after the end of vulcanization.

The green tire waits on the water tank 5 provided at the lower side of the vulcanizer and is picked up by the loader shoe 7 of the loader 6 and transferred to the upper portion of the lower mold 3.

After that, the press 2 is operated so that the upper mold 1 is brought into close contact with the lower mold 3 and completely closed, and internal pressure flows into the bladder 8 to start vulcanization.

When the vulcanization is finished, the upper mold 1 rises vertically and the tire 4 remains in the lower mold 3, whereby the lower ring 9 rises so that the tire 4 rises in the lower mold 3. Off).

As described above, when the lower ring 9 is raised, the upper ring 10 is also raised so that the tire is separated from the bladder 8 as the bladder 8 is lengthened in the vertical direction and contracted inward.

After the tire 4 and the bladder 8 are separated, the unloader 11 moves forward from below the press 2 to the underside of the tire 4 about the lower ring 9 and then the lower ring. When (9) is lowered, the tire (4) is separated from the lower ring (9) and positioned on the unloader (11), the unloader (11) is raised to the maximum position to lift the vulcanized tire to the center post (12) When turned over, the tire is moved to the conveyor 13.

Subsequently, the next vulcanization process proceeds while the green tires waiting in the tank 5 repeat the same steps as described above.

In the present invention, a plurality of nozzles 14 are mounted on the unloader 11 of the vulcanizer as shown in FIG. 2.

The unloader 11 consists of two arms 16 fixed to the pivot shaft 15, on which a plurality of rollers 17 are mounted.

The arm 16 is a part directly supporting the tire, and the rollers 17 allow the tire to be easily released to the outside when the unloader 11 is raised and tilted by the rotation of the rotational shaft 15.

The nozzle 14 is installed at the end portion and the middle portion of both arms 16 and the intersection portion of the pivot shaft 15 and the arm 16, and the bladder 8 so that the release agent is sprayed toward the bladder 8. Are installed facing each other. In this embodiment, six nozzles 14 are installed, but the number of installation of the nozzles 14 is not necessarily limited thereto, and may be appropriately adjusted by the spray angle of the nozzles.

That is, the installed nozzles should just be able to evenly distribute the release agent to the entire outer surface of the bladder (8).

On the other hand, although not shown in Figure 2, each nozzle 14 is connected to the tank containing the release agent through an oil pipe, the pump is provided on the flow path to enable the injection of the release agent through the nozzle, the pump Sensors are provided so that the unloader 11 can be operated at the same time as they rise, and an electronic control unit for controlling them organically is of course mounted.

As described above, a basic configuration necessary for injecting the fluid, that is, a series of components from the tank to the nozzle is a widely used technique, and thus detailed description thereof will be omitted.

On the other hand, when vulcanization is finished and the unloader 11 starts to rise, the release agent is sprayed toward the bladder 8 at each nozzle 14 at a time, and the spraying is performed while the unloader 11 is raised. Continues.

Therefore, the release agent is applied to the entire bladder 8 so that the part without the release agent is not applied in the part in contact with the green tire, and the release agent is applied in the step of releasing the finished vulcanized tire so that the green to be vulcanized Since the tire is placed on top of the mold, the releasing agent drying time can be secured more than when the releasing agent is applied, and since the releasing agent is injected into the bladder 8 in a high temperature state immediately after the end of vulcanization, the releasing agent is dried more quickly. do.

As described above, according to the present invention, since the release agent is evenly sprayed on the contact surface between the bladder and the green tire, the separation of the bladder and the green tire is very easy after the end of vulcanization, and the drying is performed quickly after the release of the release agent. The defects due to undrying do not occur, thereby reducing the running time of the vulcanization process.

Claims (1)

In the vulcanizer having a plurality of arms fixed to the rotating shaft and unloading the tire which has been fully vulcanized by the unloader movable up and down, the end and middle portions of each of the arms and the rotating shaft and the respective arms are Release agent injection nozzles are provided at the intersections, so that the release nozzle is sprayed on the outer surface of the bladder separated from the tire while the unloader is raised to unload the finished vulcanized tire. Vulcanizer.

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