KR100317843B1 - Tires with buffer holes - Google Patents

Abstract

The green tie is placed between the upper and lower molds, and when the mold starts to close, a strong pressure is applied to the inside, and the green tire is expanded by the pressure to contact the mold, and heat and pressure are applied inside and outside the mold. This opens and the tire is discharged.

Thereafter, the tire is inflated for a period of time to form a tire according to the present invention in which a buffer hole is formed.

Description

Tires with buffer holes

The present invention relates to a tire in which a buffer hole is formed so as to penetrate laterally through a thick rubber layer of a portion in contact with the ground of the tire.

Typically, a tubeless tire is formed of a bead consisting of copper plated high-strength steel wire for fixing to a wheel disk, an inner liner is formed to prevent leakage of charged air, and can withstand the high load of the tire. Carcass is formed on the inner circumference of the tire so that a side wall is formed to alleviate the impact from the road surface of the tire, and a thick rubber layer and a tread where a belt is adopted to increase safety at the part in contact with the ground. Is formed.

Therefore, in order to have such a configuration, it is usually manufactured through the following manufacturing process.

First, in the refining process, various chemicals are added to the raw rubber and mixed.

Next, in the extrusion process, the mixed rubber is discharged through the extruder in a constant width and thickness according to the specification and the application for each part.

The tread is formed by cooling and cutting the rubber discharged from the extruder.

Then, in the beading process, rubber is applied to the high strength steel wire to a certain thickness, and the steel wire is passed through the bead wire extruder to form beads.

Next, in the rolling step, a rubber film having a predetermined thickness is uniformly applied to the face of the raw cord paper to form a topping cord paper.

The topping cord paper is cut at a constant width and angle in the cutting process.

The cut coat is bonded and wound on a liner to form carcass.

The carcass is made of woven or steel cord paper, and serves to support the dimensional retention and load of the tire.

Next, a molding process is performed.

In this process, all tire constituent materials produced in the above processes are sequentially joined in a molding machine.

First, after the bead and the carcass is combined, a tread is attached to the carcass to form a green tire.

Finally, the vulcanization or vulcanization process is carried out.

The green tire manufactured in the molding process is inserted into a mold, and heat and pressure are applied inside and outside.

As a result, sulfur and other chemicals will react with the rubber.

By this chemical reaction, the high molecular molecules are combined with sulfur to become a stable compound, whereby the tire produced by the vulcanization process obtains a unique tread design and elasticity by the mold.

The above processes are shown schematically in FIG. 1.

Conventional tires manufactured as described above are used to prevent damage to the vehicle due to excessive impact and thus durability of the vehicle is always maintained, heat of tires generated at high speeds is rapidly released, or excessive air pressure is applied to the tires. Preventing damage to the tire is prevented, or proper air pressure is maintained to shorten the braking distance has a problem that it is difficult to prevent the accident in advance.

Accordingly, the present invention is to provide a tire that acts to alleviate the impact when the vehicle is running, to provide an excellent ride feeling, and to overcome the above problems.

The present invention provides a tire with a buffer hole, which is produced by using a special mold in the above vulcanization step.

Tire of the present invention, the refining and extrusion process for forming the tread, the bead process for forming the bead, the rolling process and cutting process for forming the carcass, combine the beads and carcass and attach the tread to the carcass The manufacture of a tire having a buffer hole manufactured by a molding process for forming a green tire and a vulcanization process for manufacturing a final tire is performed in the vulcanization process, in which the tire is in contact with the ground by using a mold having one or more protrusions formed on a lower surface thereof. Multiple holes are formed in the thick rubber layer.

1 is a process chart at the time of manufacturing a conventional tire,

2 is a plan view of a tire according to the present invention;

2a is an enlarged perspective view of a mold for manufacturing a tire according to the present invention;

3 is a sectional view of a state in which a hole of the present invention is formed;

Figure 3a is a cross-sectional view showing a hole through the thick rubber layer

〈Description of the symbols for the main parts of the drawings〉

10: tire 11,12: mold

13: protrusion 15: rubber layer

16: hole

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. 2, a plan view of a molded tire according to the present invention is shown.

The side of the tire of the present invention is provided with one or more buffer holes 16 through which a thick rubber layer 15 penetrates.

As described above, in order to manufacture a tire, a tread is formed in a refining process and an extrusion process, rubber is applied to the steel wire to form beads, and a carcass made of fabric is formed in the rolling process. Then, beads and carcass are combined in a molding process, and a tread is attached to carcass to form a green tire.

Then, the green tire is inserted between the molds for manufacturing the tire 10 according to the present invention. As shown in FIG. 2A, the mold is composed of two molds 11 and 12. Finally, in the vulcanization or vulcanization process, the green tire between the molds 11 and 12 is pressed and heated to manufacture the tire 10 in which the buffer hole 16 of the present invention is formed.

More specifically, the vulcanization process includes a green tire inside paint application process, a vulcanization process, and an expansion process.

After the green tire is disposed between the molds 11 and 12, a strong pressure acts inside when the molds 11 and 12 start to close.

The green tie is inflated by pressure and contacts the inner walls of the molds 11 and 12 via a plurality of protrusions 13 protruding from the inner surface of the mold. Thereafter, heat and pressure are applied internally and externally, so that the buffer hole 16 of the present invention is formed in the thick rubber layer 15 as shown in Fig. 3A.

The height of the plurality of protrusions 13 protruding from the inner surfaces of the molds 11 and 12 corresponds to half the tire width.

In the inflation process, the material of the green tire is formed with a buffer hole 16 by the protrusion 13.

The tie shown in FIG. 3 shows a plurality of buffer holes 16 in the rubber layer 15 in contact with the ground, which rubber layer 15 has a thickness large enough to support the load applied to the tire 10.

The tire 10 shown in FIG. 3A shows a state where the shock absorbing hole 16 penetrates, and the shock absorbing hole 16 corresponds to the load.

Therefore, these shock absorbing holes are elliptical or round or vary depending on the respective load and air resistance, and the shock absorbing holes 16 are free from distortion during rotation of the tire.

According to the present invention described above, the tire formed with the cushioning hole serves to mitigate an impact when driving the vehicle. Accordingly, the vehicle equipped with the tire of the present invention provides excellent ride comfort, prevents the vehicle from being damaged by excessive shock, thereby improving durability of the vehicle, rapidly dissipating the heat of the tie generated during high-speed driving, and excessive tires. It prevents the air pressure from being applied and prevents the breakage of the tie, and maintains the proper air pressure to shorten the braking distance.

In addition, the tire with a buffer hole manufactured according to the present invention can be applied to all kinds of tires.

Those skilled in the art will be able to easily make various modifications without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims should not be limited to the description herein, but should be construed broadly.

Claims (1)

Refining and extruding process for forming tread, bead process for forming bead, rolling process and cutting process for forming carcass, forming process for forming green tire by combining the bit and carcass and attaching tread to carcass and A tire manufactured by a vulcanization process for producing a final tire, the tire having a cushioning hole characterized in that a plurality of buffer holes (16) are formed in the rubber layer (15) of the tie (10) in contact with the ground.