KR20110047071A - Trade mold segment, tire vulcanizing mold comprising the said segment, and setting method for the tire vulcanizing mold - Google Patents

Abstract

PURPOSE: A tread mold segment, a tire vulcanizing mold, and an assembly method for a tire vulcanizing mold are provided to enable simple and low-cost assembly of a tire vulcanizing mold because an insert mold of a tread mold segment can be separately replaced. CONSTITUTION: A tread mold segment comprises a base mold(10) which is fixed to a container, an insert mold(15) which is inserted in a joint groove of the base mold and formed with an embossed tread pattern on the interior thereof, and a plate(50) which is attached to cover the sides of the base mold and the insert mold corresponding to upper and lower side molds(30,40).

Description

TRADE MOLD SEGMENT, TIRE VULCANIZING MOLD COMPRISING THE SAID SEGMENT, AND SETTING METHOD FOR THE TIRE VULCANIZING MOLD}

The present invention relates to a tread mold segment, a tire vulcanization mold including the same, and a method for assembling a tire vulcanization mold. The tread mold segment forming a tread portion during tire vulcanization can be easily configured and replaced according to a tread shape. It relates to a segment structure that can easily remove the tire rubber by-products that are stuck or cured in the gap during vulcanization.

In general, in the tire manufacturing process, when the molding process is completed, a vulcanization process is performed to make the produced green case or green case into a final finished product. In the vulcanization process of vulcanizing the green case, the green case is put into the tire vulcanizer and heat and pressure is applied for a predetermined time. In the process, the green case is held in close contact with the vulcanization mold of the vulcanizer and is formed by the tread mold segments and the upper and lower side molds. The tread pattern and side portions of the tire are formed.

A general tire vulcanizer is a structure in which a plurality of sector molds for forming a tire are coupled to a container, and in particular, a plurality of sector molds or segments for forming a tread portion of a tire are connected to constitute a tread mold.

1 is a cross-sectional view showing a portion of a conventional tire vulcanizer, as can be seen with reference to Figure 1, the vulcanizer is a segment (1) and the upper side mold (1) of the tread mold in an outer container (not shown) forming a basic structure ( 3) and the lower side mold 4 is coupled to the green case 2 is a device that is vulcanized therein.

However, due to the large size of the green case (2) during the vulcanization process or the minute gaps between the segments (1) and the upper and lower side molds (3, 4), rubber by-products may form and stick or harden.

2 shows an enlarged view of the formation of a rubber by-product between the segment 1 of FIG. 1 and the gap between the upper and lower side molds 3 and 4.

When the rubber of the green case 2 is bitten by the gap between the connecting surface of the segment 1 and the upper and lower side molds 3 and 4 or flows into the fine gap by pressure, it is fixed by heat, and this process is repeated. As the by-products such as fixed rubber is cured as much as possible, the process of periodically removing by-products such as fixed rubber is required.

However, in the process of removing the hardened rubber by-products fixed in the prior art, there is a problem that the connection surface of the segment 1 made of aluminum is damaged, and time and cost are required to be removed.

On the other hand, when formed as an integrated tread segment structure, the thickness of the segment mold is thick according to the size of the tire, there is also a problem that requires a large material cost when manufacturing the segment mold.

Therefore, it is possible to easily and easily remove by-products such as rubber generated during the vulcanization process without complicating the vulcanization process of the tire, and to easily apply various tread patterns without replacing the tread mold of the tire. There is a need for development of the structure of the mold.

The present invention has been made to solve the above problems, the object of the present invention is to propose a structure of a segment mold that can easily remove by-products such as hardened rubber generated during the vulcanization process in the tire vulcanizer. .

In addition, another object of the present invention is to propose a segment structure of the tread mold that can be applied to the tread patterns of a variety of tires to easily configure the tire vulcanizer and to manufacture a tire according to various tread patterns.

In addition, a method of assembling the vulcanization mold of the tire vulcanizing apparatus of the present invention, while using a conventional coupling process of the tire vulcanizing apparatus, proposes a method of increasing the production yield by easily vulcanizing the tire in various tread shapes and removing by-products generated in the process. can do.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the description of the present invention .

Tire tread mold segment according to an embodiment of the present invention for achieving the above object in each segment of the tread mold forming the tread portion of the tire when the tire is vulcanized, is fixed to the container and the fastening groove is formed on the inner surface A base mold, an insert mold fitted into a fastening groove of the base mold, and having a tread pattern embossed therein; and the base mold and the insert matching the upper and lower side molds. And a plate that is padded and fastened to cover the sides of the mold.

At this time, the inner surface of the base mold may be formed in a shape corresponding to the shape of the outer surface of the insert mold is in close contact with the inner surface of the base mold and the outer surface of the insert mold.

In the present invention, both side end portions of the insert mold fastened to the plate may be formed to protrude higher than both side end portions of the base mold.

At this time, one side of the plate and the insert mold and the base mold are fastened may be a step shape, but is not necessarily limited to this will be sufficient if the shape can be attached to the insert mold and the base mold at once.

The plate may have at least one pair of fastening portions fastened to the side surfaces of the base mold and the insert mold, and the fastening portions may be fastening bolts.

At least one fastening part may be formed on a side of the base mold and a side of the insert mold so that the plate may be coupled through the fastening part.

A through hole in which a fastening means is formed may also be formed in the coupled plate.

Preferably, the fastening means is a tightening bolt, through which the tightening bolts fix both ends of the base mold and the insert mold together with the plate.

On the other hand, the tire vulcanization mold according to an embodiment of the present invention for solving the above problems, a container in which the tread mold for forming the tread portion of the tire is fixed, each segment constituting the tread mold, the image forming the side of the tire In the tire vulcanization mold composed of a lower side mold for vulcanizing the green case, the base is fixed to the container and the fastening groove is formed on the inner side, the base mold is fitted into the fastening groove of the base mold is coupled to the inside tread The insert mold is embossed with a pattern, and the base mold matching the upper and lower side molds and a plate which is padded and fastened to cover the side surfaces of the insert mold.

At this time, the inner surface of the base mold is formed in a shape corresponding to the shape of the outer surface of the insert mold can be matched with the contact surface.

In addition, it is preferable that both end portions of the insert mold fastened to the plate are formed to protrude higher than both end portions of the base mold, and vice versa in some cases, and may be formed to be flat without height difference.

In some cases, one surface coupled to the insert mold and the base mold of the plate may have a stepped shape.

The method of assembling the tire vulcanization mold in the vulcanization process of the tire manufacturing process according to an embodiment of the present invention for solving the above problems, the upper and lower side mold bonding step of forming the side of the tire, and forming the tread portion of the tire In the segment joining step for forming a tread mold, the segment joining step, the step of fixing the base mold having a fastening groove formed on the inner surface to the container, the insert mold in which the tread pattern is embossed inside the base Fastening to a fastening groove of a mold, and attaching a plate to side surfaces of the base mold and the insert mold.

Since the plate may be attached in a separate process, when the by-products generated in the vulcanization process of the tire are cured or adhered to the plate, it may be replaced with a new plate. Therefore, this can easily remove the cured rubber by-products and the like generated in the gap of the component mold of the tire vulcanization mold.

One side of the plate attached to the insert mold and the base mold is preferably a stepped shape, but is not necessarily limited thereto.

The present invention can propose a segment mold structure and an assembly method of a tire vulcanization mold so that by-products such as rubber generated in the gap of the tire vulcanization mold can be easily removed in the vulcanization process of the tire manufacturing process.

In addition, the present invention reduces the increase in manufacturing cost and the complexity of the process according to the various tread patterns when manufacturing the new segment mold, and simplify the process of assembling the tire vulcanization mold by separately manufacturing and replacing only the partial insert mold of the segment. And to be carried out at a low cost there is an effect of reducing the repair cost, manufacturing cost and time of the tire.

In the manufacturing process of pneumatic tires, the molding process is carried out in the rolling, extrusion, cutting, and bead processes, which are semi-finished products that are processed according to specifications, and then assembled in the molding machine according to specifications to make green case and The process of taking over.

Subsequently, the vulcanization process of the tire process is a process of making the tire of elastic rubber by squeezing for a predetermined time by supplying a predetermined pressure and a heat source in and out of the mold by putting the manufactured green case into a mold. The three major components of vulcanization are Time, Pressure, and Temperature. The vulcanization methods include Steam Cure, Hot Water Cure, and Gas Cure.

The final shape of the tire is completed through the forming process and the vulcanization process. In the process of forming the green case, each layer constituting the tire structure is stacked and finally, the pattern of the tread portion of the tire and the shape of the side are made.

Generally, in the vulcanization process, a sectional vulcanization mold in which a sector mold for forming a tread portion of a tire is divided into a plurality of pieces is provided with upper and lower side molds installed in a container such as a top plate and a bottom plate, respectively. In the periphery of the plurality of segments for tread mold for molding the tread portion of the tire is configured to be combined.

The present invention is a modified structure of the segment fixed to the container to form a tread can be easily replaced according to the tread pattern, a structure that can easily remove the debris, such as rubber by-products generated in the vulcanization process It is suggested.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a cross-sectional view showing a structure of a tire vulcanization mold according to an embodiment of the present invention.

Referring to FIG. 3, the vulcanization mold of the tire according to the exemplary embodiment of the present invention is not shown, but a container to which the tread segment mold is attached and fixed, a base mold 10 which is a part of a segment fixed to the container, and Insert mold 15 is fixed to the inside of the base mold 10, the upper side mold 30 and the lower side mold 40 to form the side shape of the tire, and the base mold 10 and the insert mold 15 It consists of a plate 50 padded on both side ends.

The base mold 10 has a fastening groove (not shown) to fix the insert mold 15 to the inside of the base mold 10. Of course, the fixing of the base mold and the insert mold is not limited to the fastening groove.

Preferably, the contact surface of the base mold and the insert mold may have a corresponding shape.

The inner surface of the insert mold 15 is embossed with a tread pattern so that the tread shape of the tire can be formed.

By replacing only the insert mold there is an advantage that can be applied to various tread patterns in the tire vulcanization process.

In the conventional tire vulcanization apparatus, the tread segment had to go through a process of fabricating various embossed segments according to the tread shape of the tire and then assembling the mold. Therefore, human and time efforts were required in a separate mold fabrication process and a mold assembly process.

However, the segment as in the present invention has an effect that can significantly reduce the human and time effort required compared to the production of a segment with a large volume and thickness because only the insert mold inside and replaceable.

The thickness of the insert mold is not particularly limited and may be sufficient if it is manufactured to a thickness that can withstand the temperature and pressure of the vulcanization process. The thinner the thickness, the less effort and cost of the mold manufacturing process.

On the other hand, the plate 50 is padded to cover both sides of the base mold 10 and the insert mold 15, which is matched with the upper and lower side molds 30 and 40 between the upper and lower sides, and the fastening means is fastened. In one embodiment it may be composed of a tightening bolt (60).

The plate 50 is replaced with a new plate to easily remove the adhesion of rubber by-products that may occur whenever the vulcanization process of the tire is performed.

That is, by removing the fastening bolt 60 of the plate 50 can be attached to the side plate of the base mold 10 and the insert mold 15 can be attached to the removable plate parts that can be removed separately, rubber by-products can be removed very easily Can be.

In addition, since the tread segment is divided into two molds instead of a single unit, the tightening bolt 60 is removed and only the insert mold 15 is removed to replace the insert mold with a new type of tread pattern. Easy to handle and can have the effect of reducing the manufacturing cost of the mold.

4 to 6 is a tire vulcanization mold according to an embodiment of the present invention, the tread mold segments forming the tire tread mold is separated and modeled for each component.

FIG. 4 is a segment mold which is fixed to the outer container in the tire vulcanizing device as a base mold 10 constituting the outside of the segment and is basically joined without replacement.

Although not shown separately in FIG. 4, in some cases, a fastening means such as a fastening groove coupled to and fixed to the insert mold to be attached to the inner surface may be included.

FIG. 5 schematically illustrates the insert mold 15 fixed to the inner surface of the base mold 10 of FIG. 4. Although not shown in FIG. 5, the inner surface of the insert mold 15 may be embossed with various tread patterns.

By only inserting the insert mold 15 into the tread pattern of the desired tire and replacing it with the base mold 10, the tread pattern may be variously manufactured through economical manufacturing cost and process.

After the base mold 10 of FIG. 4 and the insert mold 15 of FIG. 5 are attached, the plate 50 of FIG. 6 is padded and attached to both ends of the upper and lower side molds.

Although not shown in FIGS. 4 and 5, the side cross-sections of the base mold 10 and the insert mold 15 include fastening means that can be coupled to the plate of FIG. 6. The fastening means is combined with the fastening means of the plate of FIG. 6 to fix and engage the base mold 10, the insert mold 15, and the plate 50.

At this time, the fastening means is not particularly limited, but the fastening means may be in the form of bolts and nuts, or may be a groove or through hole through which the fastening bolts may be tightened. In FIG. 6, a through hole 61 is formed so that at least one or more fastening bolts may be tightened in the plate 50.

The back surface of the plate 50 of FIG. 6 is a surface attached to the side end portions of the base mold 10 and the insert mold 15, and the back side is the height of the side end portions of the base mold 10 and the insert mold 15. It may be formed in a step shape depending on the difference.

However, this may be formed as a flat cross section instead of a step shape as one embodiment.

The present invention has been described above in connection with specific embodiments of the present invention, but this is only an example and the present invention is not limited thereto. Those skilled in the art can change or modify the described embodiments without departing from the scope of the present invention, and such changes or modifications are within the scope of the present invention. In addition, the materials of each component described herein can be readily selected and substituted for various materials known to those skilled in the art. Those skilled in the art will also appreciate that some of the components described herein can be omitted without degrading performance or adding components to improve performance. In addition, those skilled in the art may change the order of the method steps described herein depending on the process environment or equipment. Therefore, the scope of the present invention should be determined by the appended claims and equivalents thereof, not by the embodiments described.

1 is a cross-sectional view showing a structure of a tire vulcanization mold according to the prior art.

2 is an enlarged view of a tire rubber by-product fixed or cured in a gap of a tire vulcanization mold according to the prior art.

3 is a cross-sectional view showing a structure of a tire vulcanization mold according to an embodiment of the present invention.

4 to 6 are diagrams each showing a segment mold structure of a tire vulcanization mold according to an embodiment of the present invention.

{Description of symbols for main parts of the drawing}

1: tread segment 2, 20: green case

3, 30: upper side mold 4, 40: lower side mold

5: Enlarged view of rubber by-products fixed or cured during vulcanization

10: base mold of the tread segment

15: insert mold of tread segment

50: plate 60: tightening bolt

61: hole for tightening bolt

Claims (12)

In each segment of the tread mold forming the tread portion of the tire during vulcanization, A base mold fixed to the container and having a fastening groove formed on an inner side thereof; An insert mold fitted into a coupling groove of the base mold and having a tread pattern embossed therein; And A tread mold segment comprising a plate that is padded and fastened to cover the sides of the insert mold and the base mold in conformity with upper and lower side molds. The method of claim 1, Tread mold segment, characterized in that the inner surface of the base mold has a shape corresponding to the shape of the outer surface of the insert mold. The method of claim 1, Tread mold segment, characterized in that formed on both sides of the insert mold to be engaged with the plate protrudes higher than both sides of the base mold. The method of claim 1, Tread mold segment, characterized in that one surface that is engaged with the insert mold and the base mold of the plate has a stepped shape. The method of claim 1, And the plate has at least one pair of fastening portions engaged with the side surfaces of the base mold and the insert mold. In the tire vulcanization mold constituting the green case consisting of a container in which the tread mold for forming the tread portion of the tire is fixed, each segment constituting the tread mold, the upper and lower side molds forming the side of the tire vulcanize the green case, The segment is A base mold fixed to the container and having a fastening groove formed on an inner side thereof; An insert mold fitted into a coupling groove of the base mold and having a tread pattern embossed therein; And And a plate which is padded and fastened to cover side surfaces of the base mold and the insert mold, which are matched with the upper and lower side molds. The method of claim 6, The inner side surface of the base mold is a tire vulcanization mold, characterized in that the shape corresponding to the shape of the outer surface of the insert mold. The method of claim 6, Tire vulcanization mold, characterized in that formed on both sides of the insert mold is fastened with the plate protrudes higher than both sides of the base mold. The method of claim 6, One side of the plate is engaged with the insert mold and the base mold is a tire vulcanization mold, characterized in that the stepped shape. In the method of assembling a tire vulcanization mold comprising an upper and lower side mold joining step of forming a side of the tire, and a segment joining step of forming a tread mold forming a tread portion of the tire, The segment joining step, Fixing a base mold having a fastening groove formed on an inner surface thereof to a container; Fastening an insert mold having a tread pattern embossed therein into a fastening groove of the base mold; And Assembling the tire vulcanization mold, characterized in that the step of attaching a plate on the side of the base mold and the insert mold. The method of claim 10, One side of the plate is attached to the insert mold and the base mold assembly method of the tire vulcanization mold, characterized in that the step shape. The method of claim 10, The plate is a method of assembling a tire vulcanization mold, characterized in that when the by-products are cured or fixed in the vulcanization process of the tire.

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