KR101010802B1 - The air valve of tire mold and the air vent system of tire mold using it - Google Patents

The air valve of tire mold and the air vent system of tire mold using it Download PDF

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Publication number
KR101010802B1
KR101010802B1 KR1020080097173A KR20080097173A KR101010802B1 KR 101010802 B1 KR101010802 B1 KR 101010802B1 KR 1020080097173 A KR1020080097173 A KR 1020080097173A KR 20080097173 A KR20080097173 A KR 20080097173A KR 101010802 B1 KR101010802 B1 KR 101010802B1
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KR
South Korea
Prior art keywords
tire
vulcanization mold
air
air valve
mold
Prior art date
Application number
KR1020080097173A
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Korean (ko)
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KR20100037853A (en
Inventor
이광원
Original Assignee
금호타이어 주식회사
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Priority to KR1020080097173A priority Critical patent/KR101010802B1/en
Publication of KR20100037853A publication Critical patent/KR20100037853A/en
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Publication of KR101010802B1 publication Critical patent/KR101010802B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/0617—Venting devices, e.g. vent plugs or inserts

Abstract

The present invention is installed on the tread pattern portion of the tire vulcanization mold, the tire vulcanization mold air valve and the tire vulcanization mold air using the same to easily discharge the air existing between the outer surface of the green tire and the vulcanization mold during tire vulcanization As for the discharge structure,

The air valve installed in the tread portion of the tire vulcanization mold, characterized in that composed of a body having an air discharge hole in the center, and the tension member for opening and closing the air discharge hole is assembled to the body to block the inflow of rubber,

The vulcanization mold includes a plurality of through-holes penetrating the inside and the outside of the mold body so that the air valve can be installed, and the tread pattern segments are integrally formed without being divided, so that the remaining air between the green tire and the tire vulcanization mold is smooth. While being able to be discharged, the inflow of rubber is blocked by the action of the tension plate, thereby preventing the rubber extraction.

Tire, Vulcanization Mold, Air Valve, Tension

Description

Air valve of tire vulcanization mold and air discharge structure of tire vulcanization mold using same {THE AIR VALVE OF TIRE MOLD AND THE AIR VENT SYSTEM OF TIRE MOLD USING IT}

The present invention relates to an air releasing structure of a tire vulcanization mold that minimizes the occurrence of extraction during tire vulcanization and facilitates the discharge of air. Particularly, the present invention is installed on the tread pattern portion of the tire vulcanization mold, and the outer surface and vulcanization of the green tire when the tire is vulcanized. The present invention relates to an air valve of a tire vulcanization mold and an air discharge structure of a tire vulcanization mold using the same so as to easily discharge the air existing between the molds and prevent the generation of the vent rubber.

In general, in the tire manufacturing process, the tire is produced in the molding machine by attaching and modifying various semi-finished products such as extrusion and cutting and beads to produce a green tire having a shape similar to the finished product. Through the process, the final product is produced.

In the vulcanization process, first, the green tire is placed in the vulcanization mold in the vulcanizer, the vulcanization mold is closed, and after applying heat and pressure for a certain time, the green tire is in close contact with the vulcanization mold and the tread pattern formed on the vulcanization mold is applied to the green tire. Refers to the process to be formed. At this time, in the vulcanization process, a mold manufactured to a size suitable for the size of the tire is used.

During the vulcanization process, if air remains between the vulcanization mold and the green case, the surface of the finished tire will be unevenly formed. Therefore, the air or gas remaining in the vulcanization mold must be removed after the vulcanization ends. In the related art, as shown in FIG. 1, a vent line 2 for discharging air is formed along a width direction of the tire vulcanization mold 1 to discharge air through the vent line.

However, according to the related art, when manufacturing the vulcanization mold constituting the vent line, as shown in FIG. 1, in order to secure the vent line of the vulcanization mold, a plurality of segments of the vulcanization mold are divided into a plurality of tread patterns. The uniformity of the split vent line should be ensured, and the manufacturing process is complicated, expensive vulcanization mold manufacturing cost and a long production period are required, and there is a difficulty that precision is required for assembly and disassembly even after manufacturing.

In addition, in order to discharge air or gas remaining in the vulcanization mold, conventionally, an air outlet having a diameter of about 1.2 mm to 1.6 mm is formed in upper and lower molds to achieve a desired purpose. Vented rubber or extruded rubber through the air outlet protrudes from the surface of the tire, or sticks out between the seams of the mold, which requires trimming to remove the rubber, which is often trimmed. The use of a knife has the disadvantage that the appearance of the tire is not clean after trimming.

The present invention has been made to solve the above problems, it is inserted into a plurality of through-holes formed in the body of the integral tire vulcanization mold that does not divide the segment to allow the remaining air to be discharged smoothly, as well as venting during vulcanization It is an object of the present invention to provide an air valve of a tire vulcanization mold and an air discharge structure of a tire vulcanization mold using the same, which can prevent the inflow of rubber to clean the appearance of the final tire product without trimming.

In order to achieve the above object, the present invention, in the tire vulcanization mold air valve is installed in the through-hole formed in the vulcanization mold used for the vulcanization of the green tire to discharge the air generated during the vulcanization of the tire, the air discharge in the center A body having a hole and a tension member assembled to the body and configured to open and close the air discharge hole to block the inflow of rubber.

In addition, in the present invention, the tension member is characterized by consisting of a cover for opening and closing the air discharge hole by a tension action, a coupling portion to be coupled to the body, and a tension connection portion connecting the cover and the coupling portion. do.

In the present invention, the length of the air valve is 3 ~ 10mm, the diameter is characterized in that 2 ~ 3.5mm.

In addition, the air discharging structure of the tire vulcanization mold of the present invention is a tire vulcanization mold air discharging structure in which the green tire is vulcanized to form a tread pattern, wherein the vulcanization mold is formed in the mold body so that an air valve can be installed. And a plurality of through-holes penetrating through the outside, and the tread pattern segment is integrally formed without being divided.

As described above, according to the present invention, the remaining air between the green tire and the tire vulcanization mold can be smoothly discharged, but rubber inflow is blocked due to the action of the tension plate, so that rubber extraction does not occur. Unlike the valve shape of the use of the tension member, it is convenient to operate, there is an advantage that is not limited by the cleaning (cleaning) method.

In addition, according to the present invention, by forming the tread segment of the tire vulcanization mold into one body without dividing it into many pieces, it is possible to reduce the manufacturing cost of the vulcanizing mold and to shorten the manufacturing time, and to easily assemble and dismantle even after the production. It can reduce the maintenance cost of vulcanization mold.

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

Figure 2 is a plan view showing a part of the tire vulcanization mold using the air valve according to the present invention, Figure 3 is a perspective view showing an air valve of the tire vulcanization mold according to the present invention, Figure 4 is an air according to the present invention Figure 5 is a perspective view showing the tension member of the valve, Figure 5 is a perspective view showing the body of the air valve according to the present invention, Figure 6 is a partial cross-sectional view showing a state in which the air valve according to the present invention is installed in a vulcanization mold.

The tire vulcanization mold air valve 4 according to the present invention is installed in the through hole 3 formed in the vulcanization mold used in the vulcanization process for forming a tread in the green tire, and discharges air generated when the tire is vulcanized. It consists of a cylindrical body (6) having a cylindrical air discharge hole (5) and a tension member (7) assembled to the body (6).

As shown in FIG. 4, the tension member 7 of the present invention includes a cover 7a for opening and closing the air discharge hole 5, a coupling part 7b for coupling to the body 5, and the cover ( It consists of a tension connection part 7c which connects 7a) and the said coupling part 7b.

As shown in FIG. 5, the body 6 of the present invention has a small diameter portion 6a to which the tension member 7 is coupled.

The air discharge hole 5 is opened by the tensioning action of the cover 7a and the tension connecting portion 7c before contacting the green case during vulcanization so that air is discharged, and the cover 7a when contacting the green case. It is blocked by the to prevent the entry of the vent rubber. As such, unlike the conventional spring type valve shape, the tension member 7 is used, so that the operation is convenient and is not restricted by the cleaning method.

On the other hand, it is preferable that the length of the said air valve 4 is 3-10 mm, and the diameter is 2-3.5 mm. If the length of the air valve 4 is 3mm or less, it is difficult to install smoothly in the vulcanization mold, and if the length of the air valve 4 is 10mm or more, air is not discharged smoothly. Because it can occur. In addition, if the diameter of the air valve (4) is less than 2mm, it is difficult to manufacture, if the diameter of the through hole (3) should also be formed to be more than 3.5mm in the case of more than 3.5mm because drilling takes a lot of time and is inefficient and inefficient Because.

In addition, as shown in Figure 2, the tire vulcanization mold air discharge structure of the present invention is provided with a plurality of through-holes 3 penetrating the inside and outside of the mold body so that the air valve (4) can be installed For example, a vulcanization mold is formed in which the tread pattern segment is not divided and is integrally formed. Accordingly, the manufacturing cost of the vulcanization mold can be reduced and the manufacturing time can be shortened, and the assembly and disassembly can be easily performed even after manufacture, thereby reducing the maintenance cost of the vulcanization mold.

Tire vulcanization mold air valve of the present invention configured as described above and the vulcanization mold air discharge structure using the same, the phenomenon that the rubber is introduced into the air discharge hole 5 by the tension member 7 while the air is smoothly discharged Since no extraction rubber is formed on the surface of the tire after vulcanization, the conventional trimming operation for removing it is unnecessary, resulting in productivity improvement due to reduction of labor, and vent rubber protruding from the surface of the tire. There is no concern that the tire can be produced with a clean appearance.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited to the specific embodiments, and those skilled in the art may appropriately change within the scope described in the claims of the present invention. It will be possible.

1 is a plan view of a portion of a conventional tire vulcanization mold.

2 is a plan view of a part of the tire vulcanization mold using the air valve according to the present invention.

3 is a perspective view of an air valve of a tire vulcanization mold according to the present invention.

4 is a perspective view of a tension member of the air valve according to the present invention;

5 is a cross-sectional view of the body of the air valve according to the present invention.

Figure 6 is a partial cross-sectional view of the air valve installed in the vulcanization mold according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: vulcanization mold 2: split vent line

3: through-hole 4: air valve

5 air discharge hole 6 body

6a: small diameter part 7: tension member

7a: cover 7b: coupling portion

7c: tension connection

Claims (5)

In the tire vulcanization mold air valve (4) is provided in the through hole (3) formed in the vulcanization mold used for vulcanization of the green tire, and discharges the air generated during the vulcanization of the tire, A body 6 having an air discharge hole 5 at its center, and a tension member 7 assembled to the body 6 to open and close the air discharge hole 5 so that the inflow of rubber is blocked; The tension member 7 includes a cover 7a for opening and closing the air discharge hole 5 by a tensioning action, a coupling portion 7b coupled to the body 6, and the cover 7a and the coupling. An air valve of a tire vulcanization mold, comprising a tension connecting portion (7c) connecting the portion (7b). delete The method of claim 1, The body (6) is a vulcanization mold air valve, characterized in that it comprises a small diameter portion (6a) to which the engaging portion (7b) of the tension member (7) is engaged. The method according to claim 1 or 3, The length of the air valve (4) is 3 ~ 10mm, the diameter of the tire vulcanization mold air valve, characterized in that 2 ~ 3.5mm. In the air discharge structure of the tire vulcanization mold which vulcanizes the green tire to form a tread pattern, The vulcanization mold is provided with a plurality of through-holes (3) penetrating the inside and outside of the mold body so that the air valve (4) according to claim 1 or 3 can be installed, A tire vulcanization mold air exhaust structure, characterized in that the tread pattern segment is formed integrally without being divided.
KR1020080097173A 2008-10-02 2008-10-02 The air valve of tire mold and the air vent system of tire mold using it KR101010802B1 (en)

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KR1020080097173A KR101010802B1 (en) 2008-10-02 2008-10-02 The air valve of tire mold and the air vent system of tire mold using it

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Application Number Priority Date Filing Date Title
KR1020080097173A KR101010802B1 (en) 2008-10-02 2008-10-02 The air valve of tire mold and the air vent system of tire mold using it

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KR101010802B1 true KR101010802B1 (en) 2011-01-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105946148A (en) * 2016-06-27 2016-09-21 山东豪迈机械科技股份有限公司 Exhaust device and tire mold
KR20190046304A (en) * 2017-10-26 2019-05-07 금호타이어 주식회사 Vent plug for tire vulcanizing mold

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101658312B1 (en) 2015-05-14 2016-09-20 금호타이어 주식회사 Vent Plug for Tire Cure Mold
KR20160148964A (en) 2015-06-17 2016-12-27 금호타이어 주식회사 Vent Plug for Tire Cure Mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200144037Y1 (en) 1996-12-02 1999-06-15 홍건희 A vulcanization mold structure for protecting a forming of vent rubber for a tire
KR20010044037A (en) * 2000-04-04 2001-06-05 최규진 Box formed by bonding only at one facet
JP2006103026A (en) * 2004-10-01 2006-04-20 Yokohama Rubber Co Ltd:The Tire mold, plug used in vent hole of tire mold and tire manufactured using tire mold
JP2006150602A (en) * 2004-11-25 2006-06-15 Yokohama Rubber Co Ltd:The Tire mold, plug therefor and tire manufactured using tire mold
KR100683953B1 (en) * 2005-09-29 2007-02-16 금호타이어 주식회사 Air vent valve for tire mold

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200144037Y1 (en) 1996-12-02 1999-06-15 홍건희 A vulcanization mold structure for protecting a forming of vent rubber for a tire
KR20010044037A (en) * 2000-04-04 2001-06-05 최규진 Box formed by bonding only at one facet
JP2006103026A (en) * 2004-10-01 2006-04-20 Yokohama Rubber Co Ltd:The Tire mold, plug used in vent hole of tire mold and tire manufactured using tire mold
JP2006150602A (en) * 2004-11-25 2006-06-15 Yokohama Rubber Co Ltd:The Tire mold, plug therefor and tire manufactured using tire mold
KR100683953B1 (en) * 2005-09-29 2007-02-16 금호타이어 주식회사 Air vent valve for tire mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105946148A (en) * 2016-06-27 2016-09-21 山东豪迈机械科技股份有限公司 Exhaust device and tire mold
KR20190046304A (en) * 2017-10-26 2019-05-07 금호타이어 주식회사 Vent plug for tire vulcanizing mold
KR101995773B1 (en) 2017-10-26 2019-07-03 금호타이어 주식회사 Vent plug for tire vulcanizing mold

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