JP4599533B2 - Tire cooling device after vulcanization - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a post-vulcanized tire cooling device (PCI device: post-cure inflator) used for rapidly cooling a post-vulcanized tire vulcanized by a mold in a tire vulcanizing device.
[0002]
[Prior art]
The tire vulcanizing device is provided with a post-vulcanized tire cooling device for cooling a vulcanized tire vulcanized and molded by a mold. An inflator device mounted on the inner peripheral surface and upper and lower rims mounted on the bead portion of the vulcanized tire are provided.
Inflation air is supplied to the inflator and the vulcanized tire is pressed and supported from the inside, and the beads are supported by the upper and lower rims so that the shape of the vulcanized tire is maintained and natural heat radiation is maintained. It is designed to be cooled.
[0003]
[Problems to be solved by the invention]
However, the conventional vulcanized tire cooling device has a problem in that the ambient temperature on the tire surface rises and the cooling time becomes long because of cooling by natural heat dissipation.
For this reason, the work efficiency is reduced, and in order to solve this problem, there is a problem that the equipment cost is burdened, for example, two post-vulcanized tire cooling devices are required for one die.
[0004]
The present invention has been made to solve the above-described problems, and in particular, it is an object of the present invention to provide a post-vulcanized tire cooling apparatus capable of rapid cooling by centrally cooling a bead portion having a long cooling time. It is said.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the post-vulcanized tire cooling device according to the present invention (Claim 1) is mounted on an inflator attached to the inner peripheral surface of the post-vulcanized tire and on a bead portion of the post-vulcanized tire. In the vulcanized tire cooling device with the upper and lower rims,
By forming a hollow flow path inside the upper and lower rims, connecting a cooling air supply pipe to the hollow flow path, and supplying cooling air from the cooling air supply pipe to the hollow flow path inside the rim, vulcanization is performed. The rear tire was configured to be cooled.
In this vulcanized tire cooling device, inflated air is supplied to the inflating device so that the vulcanized tire is pressurized and supported from the inside, and the bead portion is supported by the upper and lower rims. Cooling air is supplied to the hollow flow path formed in the above.
As a result, the upper and lower rims cooled by the cooling air serve as a cooling medium, and the vulcanized tire, in particular, the bead portion having a large rubber thickness can be intensively cooled.
[0006]
Further, in the post-vulcanized tire cooling device of the present invention, an air supply pipe is connected to the hollow flow path, and the discharge port of the air supply pipe is allowed to face the outer surface of the tire after vulcanization, particularly the portion from the shoulder portion to the tread portion. There exists the aspect (Claim 2) made like this.
In this case, the cooling air flows into the air feeding pipe through a hollow channel formed inside the rim, and blows out from the discharge port of the air feeding pipe to the outer surface of the vulcanized tire, particularly from the shoulder portion to the tread portion. Is done.
Therefore, in addition to the cooling of the bead portion by the upper and lower rims, the portion from the shoulder portion to the tread portion can be simultaneously cooled by blowing out from the air supply pipe, and the entire tire can be efficiently cooled.
[0007]
In the vulcanized tire cooling device of the present invention, an air supply pipe for supplying the inflation air to the inflation device and an inflation air in the inflation device are supplied to the air supply pipe to the inflation device. There is an aspect (Claim 3) in which a flow path switching valve that can be switched to an external air discharge flow path for releasing to the outside air is provided.
Inflation air is supplied to the inflation device through an air supply pipe in order to pressurize and support the inner peripheral surface of the tire. The supplied inflation air is heated by heat from the tire after vulcanization. Will be.
Therefore, if the air supply pipe is provided with a flow path switching valve, the inflation air heated by the outside air discharge flow path is discharged, and new inflation air is supplied through the air supply flow path, the inflation is periodically performed. Air can be replaced, and cooling from the inside of the tire can be promoted. Note that cooling air may be used for the inflation air.
[0008]
Further, in the post-vulcanized tire cooling device of the present invention, there is an aspect (claim 4) in which a water spray cooling pipe for spraying mist air or water on the outer surface of the post-vulcanized tire is provided.
Thus, if a sprinkling cooling pipe is added and provided, cooling using the heat of vaporization of water can be performed, and further rapid cooling can be performed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The specific configuration of the present invention is not limited to this embodiment.
FIG. 1 is a schematic diagram showing a post-vulcanized tire cooling device according to an embodiment of the present invention.
[0010]
In the figure, reference numeral 1 denotes a vulcanized tire to be cooled, which is obtained by vulcanizing and molding a green tire (raw tire) with a mold in a vulcanization molding process which is a pre-process of a cooling process by a post-vulcanization tire cooling device. is there. In the figure, 10 is a bead portion, 11 is a shoulder portion, and 12 is a tread portion.
[0011]
Further, the post-vulcanized tire cooling device includes an inflation device 2 that is attached to the inner peripheral surface of the post-vulcanized tire 1 in a balloon shape and upper and lower portions that are attached to the bead portion 10 of the post-vulcanized tire 1. Rims 3 and 3, and by supplying inflation air from the air supply pipe 20 to the inflation device 2, the vulcanized tire 1 is pressed and supported from the inside, and the bead portion 10 is supported by the upper and lower rims 3 and 3. , 10 is supported, and the vulcanized tire 1 is cooled in this supported state.
[0012]
A hollow flow path 30 is formed inside the upper and lower rims 3, 3, and a cooling air supply pipe 31 is connected to the hollow flow path 30.
Accordingly, by supplying cooling air from the cooling air supply pipe 31 to the hollow flow path 30 inside the rim 3, the upper and lower rims 3, 3 cooled by the cooling air serve as a cooling medium, and the vulcanized tire 1, In particular, the bead portions 10 and 10 having a large rubber thickness can be intensively cooled from the outer surface.
[0013]
Further, an air supply pipe 32 is connected to the hollow flow path 30 through a connecting pipe 33, and the discharge port 34 of the air supply pipe 32 is exposed to a portion from the shoulder portion 11 to the tread portion 12 of the tire 1 after vulcanization. It is like that. The air supply pipe 32 is formed in an annular shape so as to follow the tire shape, and discharge ports 34 such as round holes and slit holes are formed in the air supply pipe 32 at regular intervals.
Therefore, the cooling air from the cooling air supply pipe 31 passes through the hollow flow path 30 formed inside the rim 3 and then flows into the air supply pipe 32 via the connecting pipe 33 and is added from the discharge port 34 of the air supply pipe 32. It blows off to the outer surface of the tire 1 after vulcanization, in particular, the portion from the shoulder portion 11 to the tread portion 12.
Therefore, in addition to the cooling of the bead part 10 by the upper and lower rims 3, the part from the shoulder part 11 to the tread part 12 by the blowing from the air supply pipe 32 can be simultaneously cooled, and the entire tire can be efficiently cooled.
[0014]
The air supply pipe 20 to the inflation device 2 is provided with a flow path switching valve 21. The flow path switching valve 21 includes an air supply flow path (arrow A) for supplying inflation air to the inflation device 2, and an outside air discharge flow for releasing inflation air in the inflation device 2 to the outside air. It is formed by a three-way valve that can be switched to a path (arrow B).
Inflation air is supplied to the inflation device 2 through the air supply pipe 20 in order to pressurize and support the inner peripheral surface of the tire, and the supplied inflation air is heated from the tire 1 after vulcanization. It will be heated by.
Therefore, after the heated inflation air is discharged to the outside air through the outside air discharge passage B, the passage switching valve 21 is switched so that the inflation air is newly supplied through the air supply passage A. Inflation air can be replaced and cooling from inside the tire can be promoted. If cooling air is used for the inflation air, cooling can be promoted more effectively.
[0015]
In addition, the post-vulcanized tire cooling device is provided with sprinkling cooling pipes 4 and 4.
The sprinkling cooling pipe 4 is such that mist-like air or water is blown directly onto the outer surface of the tire 1 after vulcanization, whereby cooling using the heat of vaporization of water can be performed, and further rapid cooling is performed. Will be able to.
[0016]
【The invention's effect】
As described above, in the post-vulcanized tire cooling apparatus of the present invention, unlike the conventional cooling by natural heat dissipation, the hollow flow path formed in the rim (Claim 1) is connected to the hollow flow path. In order to actively cool the tire after vulcanization by the air supply pipe (Claim 2), the flow path switching valve (Claim 3) provided in the air supply pipe of the inflator, and the water spray cooling pipe (Claim 4), The cooling time can be greatly shortened, and the effects of improving the cooling work efficiency and reducing the equipment can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a tire cooling device after vulcanization according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tire after vulcanization 10 Bead part 11 Shoulder part 12 Tread part 2 Inflation device 20 Air supply pipe 21 Flow path switching valve A Air supply flow path B Outside air discharge flow path 3 Rim 30 Hollow flow path 31 Cooling air supply pipe 32 Trachea 33 Connecting pipe 34 Discharge port 4 Sprinkling cooling pipe

Claims (4)

In an inflation device mounted on the inner peripheral surface of a vulcanized tire, and a vulcanized tire cooling device including upper and lower rims mounted on a bead portion of the vulcanized tire,
By forming a hollow flow path inside the upper and lower rims, connecting a cooling air supply pipe to the hollow flow path, and supplying cooling air from the cooling air supply pipe to the hollow flow path inside the rim, vulcanization is performed. A vulcanized tire cooling apparatus, wherein the rear tire is cooled. 2. The post-vulcanized tire cooling apparatus according to claim 1, wherein an air supply pipe is connected to the hollow flow path, and a discharge port of the air supply pipe faces the outer surface of the tire after vulcanization. The vulcanized tire cooling device according to claim 1 or 2, wherein an air supply pipe for supplying the inflation air to the inflation device is supplied to an air supply pipe to the inflation device, and the inflation in the inflation device. A vulcanized tire cooling device provided with a flow path switching valve capable of switching to an external air discharge flow path for releasing air to the external air. The post-vulcanized tire cooling device according to claim 1, 2 or 3, wherein the post-vulcanized tire cooling device is provided with a water spray cooling pipe for spraying mist air or water on the outer surface of the post-vulcanized tire.

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