KR100276362B1 - Radial tire without belt cution and manufacturing method - Google Patents

Radial tire without belt cution and manufacturing method Download PDF

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Publication number
KR100276362B1
KR100276362B1 KR1019980013315A KR19980013315A KR100276362B1 KR 100276362 B1 KR100276362 B1 KR 100276362B1 KR 1019980013315 A KR1019980013315 A KR 1019980013315A KR 19980013315 A KR19980013315 A KR 19980013315A KR 100276362 B1 KR100276362 B1 KR 100276362B1
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South Korea
Prior art keywords
belt
manufacturing
radial tire
ply
side wall
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KR1019980013315A
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Korean (ko)
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KR19990080232A (en
Inventor
이충주
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신형인
금호산업주식회사
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Publication of KR19990080232A publication Critical patent/KR19990080232A/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)
    • B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • 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)
    • B29D30/72—Side-walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C2009/1885—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers with belt ply between adjacent carcass plies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tyre Moulding (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: A radial tire without a belt cushion and a method for manufacturing thereof are provided to reduce the cost by manufacturing a tire of the same function simply without adding the progresses of manufacturing with increasing the size of the needed length a little in manufacturing a side wall. CONSTITUTION: In the radial tire without the belt cushion and the method for manufacturing thereof, a few stages are included. In the first stage, a carcass fly(6) is turned up and the first belt fly(1) is stuck to the center of the carcass fly(6). In the second stage, a side wall(1) is stuck to the turn up side of the carcass fly(6) and an upper part(3a) of the side wall(3) overlaps the end of the first belt fly(1) about 5-10mm. In the third stage, the second belt fly(2) is stuck on the first belt fly(1) and the end of the second belt fly covers some parts of the overlapped part of the side wall(3). In the fourth stage, a tread(7) formed by compression is laid on the second belt fly(2) and the wing strip part of the tread(7) covers the upper part(3a) of the wall(3).

Description

벨트 쿠션이 없는 래디알 타이어 및 그 제조방법Radial tires without belt cushions and manufacturing method thereof

본 발명은 2장의 벨트 플라이를 갖는 승용차용 래디알 타이어와 그 제조방법에 관한 것으로서, 특히 벨트 플라이 사이로 사이드 월의 상단부를 삽설하여 이부분이 벨트 쿠션의 역할을 대신 수행하도록 한 벨트 쿠션이 없는 래디알 타이어 및 그 제조방법에 관한 것이다.The present invention relates to a radial tire for a passenger car having two belt plies and a method of manufacturing the same. In particular, a belt cushionless radiator having an upper end portion of a sidewall inserted between belt plies so that this part performs a role of a belt cushion instead. It relates to an egg tire and a method of manufacturing the same.

도 2는 벨트 쿠션을 가지는 종래 래디알 타이어의 부분 종단면도이다.2 is a partial longitudinal sectional view of a conventional radial tire with a belt cushion.

일반적으로, 래디알 타이어는 제1벨트 플라이(11)와 제2벨트 플라이(12)속의 보강코드가 스틸재질이기 때문에, 벨트 플라이의 접합 단부(端部)에서 응력집중 현상이 일어나 서로 분리되기 쉽다.In general, since the radial tire has a reinforcing cord in the first belt ply 11 and the second belt ply 12 made of steel, stress concentration occurs at the joint end of the belt ply and is easily separated from each other. .

따라서, 종래에는 이부분에서의 응력집중 현상을 완화시키기 위해, 벨트 플라이(11)(12)의 접합 단부에 두께가 얇은 벨트 쿠션(4)을 삽설하여 탄력성을 증가시키는 경우가 있다.Therefore, in order to alleviate the stress concentration phenomenon in this part conventionally, the belt cushion 4 with a thin thickness is inserted in the joining edge part of the belt plies 11 and 12, and elasticity may be increased.

그러나, 대개의 경우는 상기 벨트 플라이(11)(12)에도 얇은 두께로 스킨 러버(SKIN RUBBER)가 톱핑(TOPPING)되어 있어서, 응력 완화를 위해 벨트 쿠션(4)을 사용하는 경우는 흔치 않다.However, in most cases, the skin ply (SKIN RUBBER) is also thinned to the belt plies (11, 12), and the belt cushion (4) is rarely used for stress relaxation.

오히려, 도 3에 도시한 것처럼, 벨트 플라이(21)(22)의 양 끝부분에 에지 캡플라이(5)를 감아 붙임으로써, 고속 주행시, 상기 에지 캡플라이(5)가 수축작용을 하여 벨트 플라이간의 분리를 억제시키는 경우가 많다.On the contrary, as shown in FIG. 3, the edge cap plies 5 are wound around both ends of the belt plies 21 and 22, so that the edge cap plies 5 contract and act upon the belt plies at high speed. In many cases, the separation of liver is suppressed.

그러나, 상기 2가지 타입의 래디알 타이어는 그 어떤 경우에도 벨트 쿠션(4) 또는 에지 캡플라이(5)를 만드는 제조공정 및 이의 부착공정이 부수하기 때문에, 타이어 제작공정이 복잡해지고, 또한 제작시간이 길어져 생산생이 떨어지는 단점이 있다. 뿐만 아니라, 2가지의 공정이 추가적으로 적용됨에 따라서 생산 설비가 비대해지고, 따라서 비용이 증가함과 동시에 장치의 설치면적이 넓어지는 단점이 있다.However, since the two types of radial tires are accompanied by a manufacturing process for attaching the belt cushion 4 or the edge cap ply 5 and its attachment process in any case, the tire manufacturing process becomes complicated and also the production time. There is a disadvantage in that the longer the product is falling. In addition, as two processes are additionally applied, the production equipment is enlarged, and thus the cost is increased and the installation area of the apparatus is widened.

본 발명은 이러한 종래의 래디알 타이어가 갖고 있던 문제점들, 예컨대 제작공정의 추가 및 제조비용 상승 등의 문제점을 개선하기 위해 안출한 것으로서, 벨트 쿠션이나 에지 캡플라이 없이도 벨트 플라이간의 분리(세퍼레이션) 현상을 억제할 수 있는 래디알 타이어와 그 제조방법을 제공함이 목적이다.The present invention has been made to improve the problems of the conventional radial tires, such as the addition of a manufacturing process and increase the manufacturing cost, the separation between the belt ply without a belt cushion or edge cap ply (separation) It is an object of the present invention to provide a radial tire capable of suppressing the phenomenon and a manufacturing method thereof.

본 발명에서는 이러한 상기의 목적을 달성하기 위하여, 통상적인 크기보다 약간 길게 사이드 월을 압연한 다음, 이 사이드 월의 상단부분을 제1벨트 플라이와 제2벨트 플라이의 접합 단부 사이로 삽설하여 압착·성형함을 특징으로 한다.In the present invention, in order to achieve the above object, the side wall is rolled slightly longer than the usual size, and then the upper end portion of the side wall is inserted between the joint ends of the first belt ply and the second belt ply to be crimped and molded. It is characterized by.

도 1은 본 발명에 따른 래디알 타이어의 부분 종단면도,1 is a partial longitudinal sectional view of a radial tire according to the present invention;

도 2는 벨트 쿠션을 가지는 종래 래디알 타이어의 부분 종단면도,2 is a partial longitudinal cross-sectional view of a conventional radial tire having a belt cushion;

도 3은 벨트 쿠션 대신 에지 캡플라이를 갖는 종래 래디알 타이어의 부분 종단면도.3 is a partial longitudinal cross-sectional view of a conventional radial tire with an edge cap ply instead of a belt cushion.

〔도면 부호의 설명〕[Description of Drawing Reference]

1...제1벨트 플라이, 2...제2벨트 플라이,1 ... 1st belt ply, 2 ... 2nd belt ply,

3...사이드 월, 4...벨트 쿠션,3 ... side wall, 4 ... belt cushion,

5...에지 캡플라이, 6...카카스 플라이,5 ... edge cap fly, 6 ... carcass fly,

7...트래드.7 ... Trad.

이하, 첨부된 도면을 참조하여 본 발명에 따른 벨트 쿠션이 없는 래디알 타이어와 그의 제조방법에 관하여 상세히 설명한다.Hereinafter, a radial tire without a belt cushion and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.

첨부된 도면중 도 1은 본 발명에 따른 래디알 타이어의 부분 종단면도이다.1 is a partial longitudinal cross-sectional view of a radial tire according to the present invention.

상기 도면에서 참조되는 바와 같이, 본 발명에 따른 래디알 타이어는As referred to in the figure, the radial tire according to the present invention

카카스 플라이(6)를 턴업시킨 후 그 중앙부분에 제1벨트 플라이(1)를 감아 붙이는 제 1단계와;A first step of turning up the carcass ply 6 and winding the first belt ply 1 around the center portion thereof;

상기 카카스 플라이(6)의 턴업 면쪽에 종래보다 조금 길게 압연한 사이드 월(3)을 부착하여, 상기 사이드 월(3)의 상단부분(3a)이 제1벨트 플라이(1)의 단부를 약 5-10㎜ 정도 오버랩되도록 하는 제 2단계와;The sidewall 3 rolled a little longer than the conventional one is attached to the turn-up face of the carcass ply 6, so that the upper end portion 3a of the sidewall 3 weakens the end of the first belt ply 1. A second step of overlapping by about 5-10 mm;

제2벨트 플라이(2)를 상기 제1벨트 플라이(1) 위에 부착하되 상기 제2벨트 플라이(2)의 끝부분이 상기 사이드 월(3)의 오버랩 부분을 일부 덮도록 부착하는 제 3단계와;A third step of attaching a second belt ply (2) on the first belt ply (1), with the end of the second belt ply (2) covering a portion of the overlap of the sidewall (3); ;

상기 제2벨트 플라이(2) 위에 소정 두께로 압출성형한 트래드(7)를 얹은 다음, 상기 트래드의 윙스트립 부분이 사이드 월(3)의 상단부분(3a)까지 덮도록 압착하는 제 4단계를 거쳐 제작된다.The fourth step of placing a tread (7) extruded to a predetermined thickness on the second belt ply (2), and then compressed so that the wing strip portion of the tread to cover the upper end portion (3a) of the side wall (3) After being produced.

여기서, 본 발명의 제작공정중 종래와 동일한 과정은 중복 설명을 피하기 위해 생략하였음을 밝혀 둔다.Here, the same process as the prior art of the manufacturing process of the present invention will be omitted to avoid redundant description.

이와 같이 하여, 본 발명의 방법으로 제작된 래디알 타이어는 도 1에 도시된 것처럼, 사이드 월(3)의 상단부분(3a)이 제1벨트 플라이(1)와 제2벨트 플라이(2) 사이로 대략 5-10㎜ 정도 삽설된 형태를 나타낸다.Thus, in the radial tire manufactured by the method of the present invention, as shown in FIG. 1, the upper end portion 3a of the side wall 3 is placed between the first belt ply 1 and the second belt ply 2. The inserted shape is about 5-10 mm.

상기 사이드 월(3)의 상단부분(3a), 더욱 엄밀히 말하면, 제1벨트 플라이(1)와 오버랩된 부분은 종래의 벨트 쿠션(4) 또는 에지 캡플라이(5)와 마찬가지로 충격흡수 및 응력 완화의 역할을 수행하게 됨으로써, 벨트 플라이간의 접합 단부에서 흔히 발생하던 세퍼레이션 현상을 방지하게 된다.The upper portion 3a of the side wall 3, more precisely, the portion overlapped with the first belt ply 1 is shock absorbed and stress relieved as in the conventional belt cushion 4 or the edge cap ply 5. By performing the role of, it is possible to prevent the separation phenomenon that commonly occurs at the junction between the belt ply.

이상과 같이, 본 발명의 방법에 따라서 제작된 래디알 타이어는 사이드 월(3)의 제작시, 요구되는 길이만큼 사이즈를 약간 증가시켜 주기만 하면 됨으로 부수적인 작업공정의 추가없이 동일 성능의 타이어를 간단히 제작할 수 있고, 따라서 비용을 절감할 수 있으며, 벨트 쿠션(4)이나 에지 캡플라이(5) 없이도 벨트 플라이간의 분리(세퍼레이션) 현상을 억제할 수 있는 장점이 있다.As described above, the radial tire manufactured according to the method of the present invention simply increases the size slightly by the required length at the time of manufacturing the sidewall 3, so that tires of the same performance can be easily obtained without the additional work process. It is possible to manufacture, thus reducing the cost, there is an advantage that can suppress the separation (separation) phenomenon between the belt plies without the belt cushion 4 or the edge cap ply (5).

Claims (2)

공기입 래디알 타이어의 제조방법에 있어서,In the manufacturing method of a pneumatic radial tire, 카카스 플라이(6)를 턴업시킨 후 그 중앙부분에 제1벨트 플라이(1)를 감아 붙이는 제 1단계와;A first step of turning up the carcass ply 6 and winding the first belt ply 1 around the center portion thereof; 상기 카카스 플라이(6)의 턴업 면쪽에 사이드 월(3)을 부착하여, 상기 사이드 월(3)의 상단부분(3a)이 제1벨트 플라이(1)의 단부를 5-10㎜ 정도 오버랩되도록 하는 제 2단계와;The side wall 3 is attached to the turn-up face of the carcass ply 6 so that the upper end portion 3a of the side wall 3 overlaps the end portion of the first belt ply 1 by about 5-10 mm. A second step of doing; 제2벨트 플라이(2)를 상기 제1벨트 플라이(1) 위에 부착하되 상기 제2벨트 플라이(2)의 끝부분이 상기 사이드 월(3)의 오버랩 부분을 일부 덮도록 부착하는 제 3단계와;A third step of attaching a second belt ply (2) on the first belt ply (1), with the end of the second belt ply (2) covering a portion of the overlap of the sidewall (3); ; 상기 제2벨트 플라이(2) 위에, 소정 두께로 압출성형한 트래드(7)를 얹은 다음, 상기 트래드의 윙스트립 부분이 사이드 월(3)의 상단부분(3a)까지 덮도록 압착하는 제 4단계로 이루어진 것을 특징으로 하는 벨트 쿠션이 없는 래디알 타이어의 제조방법.On the second belt ply 2, a fourth step of placing a tread 7 extruded to a predetermined thickness and compressing the wing strip portion of the tread to cover the upper end portion 3a of the side wall 3 Radial tire manufacturing method without a belt cushion, characterized in that consisting of. 2장의 벨트 플라이를 갖는 승용차용 래디알 타이어에 있어서,In a radial tire for a passenger car having two belt plies, 제1벨트 플라이(1)와 제2벨트 플라이(2)의 접합 단부에, 사이드 월(3)의 상단부분(3a)을 5-10㎜ 삽설하여 만든 것을 특징으로 하는 벨트 쿠션이 없는 래디알 타이어.Radial tire without belt cushion, characterized in that the upper end portion 3a of the side wall 3 is inserted 5-10 mm at the joining end of the first belt ply 1 and the second belt ply 2. .
KR1019980013315A 1998-04-14 1998-04-14 Radial tire without belt cution and manufacturing method KR100276362B1 (en)

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KR100794736B1 (en) * 2006-06-29 2008-01-15 금호타이어 주식회사 Pneumatic tire

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980000876A (en) * 1996-06-13 1998-03-30 남일 Manufacturing method of sidewall assembly for pneumatic tire which improves productivity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980000876A (en) * 1996-06-13 1998-03-30 남일 Manufacturing method of sidewall assembly for pneumatic tire which improves productivity

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