KR20130078562A - Pneumatic vehicle tire and its production methode - Google Patents

Pneumatic vehicle tire and its production methode Download PDF

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Publication number
KR20130078562A
KR20130078562A KR1020110147578A KR20110147578A KR20130078562A KR 20130078562 A KR20130078562 A KR 20130078562A KR 1020110147578 A KR1020110147578 A KR 1020110147578A KR 20110147578 A KR20110147578 A KR 20110147578A KR 20130078562 A KR20130078562 A KR 20130078562A
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KR
South Korea
Prior art keywords
reinforcing cord
groove
tire
insertion block
unit
Prior art date
Application number
KR1020110147578A
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Korean (ko)
Inventor
곽현환
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한국타이어 주식회사
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Priority to KR1020110147578A priority Critical patent/KR20130078562A/en
Publication of KR20130078562A publication Critical patent/KR20130078562A/en

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    • 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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
    • 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
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • 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
    • 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
    • B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
    • B29D2030/0022—Handling green tyres, e.g. transferring or storing between tyre manufacturing steps
    • 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
    • B29D30/005—General arrangement or lay-out of plants for the processing of tyres or parts thereof
    • B29D2030/0055—Optimization of the cycle times of the tyre manufacturing process, e.g. adaptation of the tyre building process to the vulcanization process

Abstract

PURPOSE: A pneumatic tire for a vehicle and a manufacturing method thereof are provided to reinforce the lateral stiffness of a shoulder unit in which a groove is formed and not to disturb heat emission of the shoulder unit. CONSTITUTION: A pneumatic tire for a vehicle comprises a tread unit (1), a sidewall unit (2), and a bead unit (3). A groove (5) is formed on a shoulder unit (4) between the tread unit and the sidewall unit. A reinforcement cord (6) is installed on the groove, and the reinforcement cord crosses the groove in a driving direction and a vertical direction.

Description

차량용 공기입 타이어와 그 제조방법{Pneumatic vehicle tire and its production methode}Pneumatic vehicle tire and its production methode

본 발명은 차량용 공기입 타이어에 관한 것으로, 특히 숄더부의 발열성능을 유지하면서 횡방향의 강성을 강화시키는 기술에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire for a vehicle, and more particularly, to a technique for strengthening the stiffness in the lateral direction while maintaining the heat generation performance of the shoulder portion.

타이어의 발열성능을 좋게 하거나, 편마모 등을 개선하기 위해 숄더부에 홈이나, 구멍을 내는 연구가 지속적으로 제기되어왔다. 그러나 이러한 연구는 타이어의 횡강성을 저하시키는 결과를 동반한다. In order to improve the heat generation performance of tires and to improve the wear and tear on the shoulders, studies have been continuously made to form grooves or holes in the shoulders. This study, however, is accompanied by a reduction in the lateral stiffness of the tire.

종래발명기술에 있어서 이러한 홈이 있는 타이어의 횡강성 저하를 보강하는 기술은 전무한 실정이다. 숄더부의 변형을 축소시키기 위하여 숄더부를 보강하는 기술로서 공개특허 10-2007-0097252에서는, 항공기 타이어의 숄더부에 강화코드를 삽입하여 변형을 감소시키는 기술을 개시하고 있다. 그러나 이는 숄더부의 열방출을 막는 역할을 하여 내구성을 저하시키는 결과를 수반한다.
In the related art, there is no technique for reinforcing the lateral stiffness reduction of the grooved tire. Patent Document 10-2007-0097252 discloses a technique for reducing deformation by inserting a reinforcement cord into a shoulder portion of an aircraft tire as a technique for reinforcing a shoulder portion in order to reduce the deformation of the shoulder portion. However, this serves to prevent the heat dissipation of the shoulder portion, accompanied by a result of reducing the durability.

즉, 홈이 형성된 숄더부의 횡방향의 강성을 보강하면서도 숄더부의 열방출을 방해하지 아니하는 기술이 요구되는 것이다.
That is, a technique for reinforcing the stiffness in the transverse direction of the shoulder portion in which the groove is formed does not interfere with heat dissipation of the shoulder portion.

이에, 본 발명은 트레드부와 사이드월부 사이의 숄더부에 숄더그루브 등의 홈이 형성된 것에 있어서, 상기 홈에 주행방향의 수직방향으로 홈을 가로지르는 보강코드를 설치함으로써 상기와 같은 문제를 해결하고자 한다.
Accordingly, the present invention is to solve the above problems by providing a groove such as a shoulder groove in the shoulder portion between the tread portion and the side wall portion, by installing a reinforcing cord crossing the groove in the vertical direction of the driving direction. do.

본 발명은 타이어가 코너링 주행시에는 횡방향 힘에 의해 숄더부에 인장이 발생하는데, 이러한 인장이 발생할 경우에 보강코드가 인장력에 대해 저항력을 제공함으로써 숄더부의 횡강성을 크게 증가 시켜서 코너링 주행성능을 향상시킨다. 즉 홈이 형성된 숄더부의 횡방향의 강성을 보강하면서도 숄더부의 열방출을 방해하지 아니하는 효과가 있다. According to the present invention, when the tire is cornering, tension is generated in the shoulder portion by the lateral force. When such tension occurs, the reinforcing cord provides resistance to the tensile force, thereby greatly increasing the lateral rigidity of the shoulder portion, thereby improving cornering driving performance. Let's do it. In other words, while the groove is formed to reinforce the stiffness in the lateral direction of the shoulder portion there is an effect that does not interfere with the heat release of the shoulder portion.

또한, 상기 숄더부의 홈은 직진 주행시 하중을 받으면 숄더부에 횡방향으로 가해지는 압축력을 상쇄시키는 역할을 수행하는데, 상기 홈에 적용되는 본 발명의 보강코드는 압축시 코드가 휘어지게 됨으로써 상기 홈의 압축력 완화효과를 그대로 유지하게 하여 타이어의 내마모성을 향상시킬 수 있는 것이다.
In addition, the groove of the shoulder portion serves to cancel the compressive force applied to the shoulder portion in the lateral direction when the load is subjected to the straight running, the reinforcement cord of the present invention applied to the groove is bent in the code when the compression of the groove It is possible to improve the wear resistance of the tire by maintaining the compression force mitigation effect as it is.

도1은 본 발명의 요부사시도.
도2은 숄더부가 압축력을 받는 경우의 단면도.
도3은 본 발명의 보강코드삽입블럭의 사시도.
도4는 보강코드삽입블럭의 밀기부가 밀려나온 상태의 사시도.
도5는 금형에 설치된 보강코드삽입블럭 주변의 가류되는 상태를 설명한 요부단면도.
도6은 보강코드삽입블럭이 숄더부의 홈을 형성한 상태의 요부사시도(금형은 도시를 생략함).
도7은 보강코드삽입블럭이 숄더부의 홈을 형성한 상태의 요부단면도.
도8은 보강코드삽입블럭의 밀기부가 밀려나와 잔류고무를 제거하는 실시예를 설명하는 설명도.1 is a perspective view of the main portion of the present invention.
2 is a cross-sectional view when the shoulder portion receives a compressive force.
Figure 3 is a perspective view of the reinforcing cord insertion block of the present invention.
Figure 4 is a perspective view of the pushed out portion of the reinforcement cord insertion block.
Fig. 5 is a sectional view of the main portion illustrating the state of being vulcanized around the reinforcing cord insertion block installed in the mold.
Fig. 6 is a perspective view of a main part in which a reinforcing cord insertion block forms a groove of a shoulder portion (a mold is not shown).
Fig. 7 is a sectional view of the main part in the state where the reinforcing cord insertion block forms the groove of the shoulder portion.
8 is an explanatory view for explaining an embodiment in which the pushing portion of the reinforcing cord insertion block is pushed out to remove residual rubber;

본 발명은 차량용 공기입 타이어에 관한 것으로, 특히 숄더부의 발열성능을 유지하면서 횡방향의 강성을 강화시키는 기술에 관한 것으로서, 트레드부(1)와 사이드월부(2) 및 비드부(3)로 구성되며, 상기 트레드부(1)와 사이드월부(2) 사이의 숄더부(4)에 홈(5)이 형성된 것에 있어서, 상기 홈(5)에 주행방향과 수직방향으로 홈(5)을 가로지르는 보강코드(6)가 설치된 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire for a vehicle, and more particularly, to a technique for strengthening the stiffness in the lateral direction while maintaining the heat generation performance of a shoulder portion. The groove 5 is formed in the shoulder portion 4 between the tread portion 1 and the side wall portion 2. The groove 5 crosses the groove 5 in a direction perpendicular to the traveling direction. Reinforcement cord 6 is characterized in that it is installed.

상기 보강코드(6)는 말단에 걸림부(61)가 형성되는 것이 바람직하다. 상기 걸림부(61)는 보강코드(6)에 인장력이 가해지는 경우 보강코드(6)가 숄더부 고무내에서 이탈하지 않게 한다. 상기 걸림부(61)의 형상은 힘이 가해졌을 경우 고무를 손상시키지 아니하도록 모나지 아니한 곡면을 갖는 구형인 것이 바람직하다. The reinforcing cord 6 is preferably formed with a catch portion 61 at the end. The locking portion 61 prevents the reinforcing cord 6 from being detached from the shoulder rubber when a tensile force is applied to the reinforcing cord 6. It is preferable that the shape of the locking portion 61 is a spherical shape having a curved surface that does not angular so as not to damage the rubber when a force is applied.

코너링 주행시에는 타이어의 숄더부는 횡방향으로 당기는 인장력을 받게 된다. 상기 보강코드(6)는 횡방향의 인장력에 대하여 저항함으로써 타이어의 횡강성을 크게 증가시켜준다.In cornering driving, the shoulder portion of the tire is subjected to a pulling force in the transverse direction. The reinforcing cord 6 greatly increases the lateral stiffness of the tire by resisting the tensile force in the lateral direction.

직진 주행시에는 하중을 받으면 도2 에서와 같이 압축력이 발생한다. 이러한 압축으로 인해 타이어 숄더부가 마모될 수 있는데, 본 발명의 보강코드(6)는 압축시에는 코드가 휘어지게 됨으로써, 타이어 강성에 영향을 주지 않는다. 즉 숄더부 내마모성능 향상을 위해 홈이 형성된 경우에는 그 내마모성 향상 효과를 그대로 반영할 수 있게 된다.
When driving straight, compressive force is generated as shown in FIG. Due to this compression, the tire shoulder part may be worn. The reinforcing cord 6 of the present invention is bent when the cord is compressed, and thus does not affect the tire rigidity. That is, when the groove is formed to improve the wear resistance of the shoulder portion, the effect of improving the wear resistance can be reflected as it is.

상기의 구성을 얻기 위하여, 본 발명은 타이어를 가류장치로 가류하여 타이어를 제조하는 것에 있어서, In order to obtain the above structure, the present invention is to manufacture a tire by vulcanizing the tire with a vulcanizing device,

가류장치의 금형(7)에 보강코드삽입블럭(71)이 설치되고, 상기 보강코드삽입블럭(71)에 보강코드(6)를 장착하는 장착단계;A reinforcing cord insertion block (71) is installed in the mold (7) of the vulcanizing apparatus, and a mounting step of mounting the reinforcing cord (6) on the reinforcing cord insertion block (71);

타이어를 가류장치로 가류하여, 금형(7)에 설치된 보강코드삽입블럭(71)에 장착된 보강코드(6)가 가류된 타이어 내로 삽입되는 가류단계;A vulcanization step of vulcanizing the tire with a vulcanizing device such that the reinforcing cord 6 mounted on the reinforcing cord insertion block 71 installed in the mold 7 is inserted into the vulcanized tire;

가류 후, 보강코드삽입블럭(71)의 밀기부(711)를 밀어 각 보강코드 삽입블럭(71) 사이의 잔류고무를 제거하는 잔류고무제거단계;After vulcanization, by pushing the pushing portion 711 of the reinforcing cord insertion block 71 to remove the residual rubber between each reinforcing cord insertion block 71;

를 포함하는 것을 특징으로 하는 공기입 타이어의 제조방법을 제공한다.
It provides a method of manufacturing a pneumatic tire comprising a.

가류장치의 금형(7)에 보강코드삽입블럭(71)이 설치되고, 상기 보강코드삽입블럭(71)에 보강코드(6)를 장착하는 장착단계에서, 상기 보강코드삽입블럭(71)은 도3에 도시된 바와 같이, 내측에 밀기부(711)가 삽입되며, 상기 밀기부(711)에는 홈(712)이 형성되어 보강코드(6)를 구속할 수 있도록 한다. The reinforcing cord insertion block 71 is installed in the mold 7 of the vulcanizing apparatus, and the reinforcing cord insertion block 71 is mounted in the mounting step of attaching the reinforcing cord 6 to the reinforcing cord insertion block 71. As shown in FIG. 3, the pushing part 711 is inserted into the inside, and the pushing part 711 is provided with a groove 712 to restrain the reinforcing cord 6.

상기 보강코드삽입블럭(71)의 밀기부(711)는 도4에 도시된 바와 같이 화살표방향으로 밀려나갈 수 있도록 구성된다.
Pushing portion 711 of the reinforcing cord insertion block 71 is configured to be pushed in the direction of the arrow, as shown in FIG.

타이어를 가류장치로 가류하여, 금형(7)에 설치된 보강코드삽입블럭(71)에 장착된 보강코드(6)가 가류된 타이어 내로 삽입되는 가류단계에 있어서, 도5에 도시되는 바와 같이 보강코드삽입블럭(71)들이 숄더부의 홈(5)을 형성한다. 도6은 보강코드삽입블럭(71)들이 홈(5)을 형성하고, 가류되면서 보강코드(6)가 그린타이어로 파고들어 삽입되어진 상태를 도시한다(금형(7)의 도시는 생략함).
In the vulcanizing step in which the tire is vulcanized by the vulcanizing device and the reinforcing cord 6 mounted in the reinforcing cord insertion block 71 installed in the mold 7 is inserted into the vulcanized tire, as shown in FIG. 5. The insertion blocks 71 form the grooves 5 of the shoulder portion. Fig. 6 shows a state in which the reinforcement cord insertion blocks 71 form the grooves 5, and the reinforcement cords 6 are inserted into the green tires while being vulcanized (not shown in the mold 7).

가류 후, 보강코드삽입블럭(71)의 밀기부(711)를 밀어 각 보강코드 삽입블럭(71) 사이의 잔류고무를 제거하는 잔류고무제거단계에서는, 도7에 도시된 바와 같이, 각 보강코드삽입블럭(71) 사이의 잔류고무(A)를 밀기부(711)를 밀어 제거하게 된다. 이때 최초의 밀기부(711)를 밀면 다음차례의 보강코드삽입블럭(71)의 밀기부(711)도 같이 밀려나가기 때문에 일괄적으로 다수의 잔류고무(A)들을 제거할 수 있어 공정의 효율을 높인다. 한편, 홈(712)에 물려있던 보강코드(6)는 홈(712)을 따라 들어감으로써 밀기부(711)에 의해 밀려나지 아니한다. In the residual rubber removal step of removing the residual rubber between the respective reinforcing cord inserting blocks 71 by pushing the pushing portion 711 of the reinforcing cord inserting block 71 after vulcanization, as shown in FIG. The residual rubber A between the insertion blocks 71 is removed by pushing the pusher 711. At this time, if the first pusher 711 is pushed, the pusher 711 of the reinforcement cord insertion block 71 is pushed out next time, so that a plurality of residual rubbers A can be removed in a batch, thereby improving the efficiency of the process. Increase On the other hand, the reinforcing cord 6 that was bitten by the groove 712 is not pushed by the pusher 711 by entering along the groove 712.

이후, 보강코드삽입블럭(71)을 제거하여 타이어를 완성시키게 된다.
After that, the reinforcement cord insertion block 71 is removed to complete the tire.

1. 트레드부
2. 사이드월부
3. 비드부
4. 숄더부
5. 홈
6. 보강코드
61. 걸림부
7. 금형
71. 보강코드삽입블럭
711. 밀기부
712. 홈1. Tread section
2. Sidewall
3. Bead portion
4. Shoulder
5. Home
6. Reinforcement cord
61. Hanging part
7. Mold
71. Reinforcement cord insertion block
711. Pusher
712. Home

Claims (3)

트레드부(1)와 사이드월부(2) 및 비드부(3)로 구성되며, 상기 트레드부(1)와 사이드월부(2) 사이의 숄더부(4)에 홈(5)이 형성된 것에 있어서, 상기 홈(5)에 주행방향의 수직방향으로 홈(5)을 가로지르는 보강코드(6)가 설치된 것을 특징으로 하는 차량용 공기입 타이어.
In the tread portion 1, the side wall portion 2 and the bead portion 3, the groove 5 is formed in the shoulder portion 4 between the tread portion 1 and the side wall portion 2, A pneumatic tire for a vehicle, characterized in that a reinforcement cord (6) is installed in the groove (5) across the groove (5) in the vertical direction of the travel direction.
제1항에 있어서, 상기 보강코드(6)는 말단에 걸림부(61)가 형성되는 것을 특징으로 하는 차량용 공기입 타이어.
2. The pneumatic tire for a vehicle according to claim 1, wherein the reinforcing cord (6) has a catching portion (61) formed at an end thereof.
타이어를 가류장치로 가류하여 타이어를 제조하는 것에 있어서,
가류장치의 금형(7)에 보강코드삽입블럭(71)이 설치되고, 상기 보강코드삽입블럭(71)에 보강코드(6)를 장착하는 장착단계;
타이어를 가류장치로 가류하여, 금형(7)에 설치된 보강코드삽입블럭(71)에 장착된 보강코드(6)가 가류된 타이어 내로 삽입되는 가류단계;
가류 후, 보강코드삽입블럭(71)의 밀기부(711)를 밀어 각 보강코드 삽입블럭(71) 사이의 잔류고무를 제거하는 잔류고무제거단계;
를 포함하는 것을 특징으로 하는 공기입 타이어의 제조방법.

In manufacturing a tire by vulcanizing the tire with a vulcanizing device,
A reinforcing cord insertion block (71) is installed in the mold (7) of the vulcanizing apparatus, and a mounting step of mounting the reinforcing cord (6) on the reinforcing cord insertion block (71);
A vulcanization step of vulcanizing the tire with a vulcanizing device such that the reinforcing cord 6 mounted on the reinforcing cord insertion block 71 installed in the mold 7 is inserted into the vulcanized tire;
After vulcanization, by pushing the pushing portion 711 of the reinforcing cord insertion block 71 to remove the residual rubber between each reinforcing cord insertion block 71;
Method of manufacturing a pneumatic tire comprising a.

KR1020110147578A 2011-12-30 2011-12-30 Pneumatic vehicle tire and its production methode KR20130078562A (en)

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WO2017056455A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056456A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Method for manufacturing a noise reducing tread
WO2017056457A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056459A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056458A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
US20180001715A1 (en) * 2014-12-26 2018-01-04 Compagnie Generale Des Etablissements Michelin Tire tread for reducing noise
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US20180001715A1 (en) * 2014-12-26 2018-01-04 Compagnie Generale Des Etablissements Michelin Tire tread for reducing noise
EP3356160A4 (en) * 2015-09-30 2019-05-01 Compagnie Générale des Etablissements Michelin Method for manufacturing a noise reducing tread
US10427371B2 (en) 2015-09-30 2019-10-01 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056459A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056458A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056456A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Method for manufacturing a noise reducing tread
CN108136620A (en) * 2015-09-30 2018-06-08 米其林企业总公司 For manufacturing the molded element of lower noise tyre surface
WO2017056457A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
US10800119B2 (en) 2015-09-30 2020-10-13 Compagnie Generale Des Etablissements Michelin Method for manufacturing a noise reducing tread
EP3356106A4 (en) * 2015-09-30 2019-04-24 Compagnie Générale des Etablissements Michelin Molding element for manufacturing a noise reducing tread
US10421240B2 (en) 2015-09-30 2019-09-24 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
WO2017056455A1 (en) 2015-09-30 2017-04-06 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
US10427370B2 (en) 2015-09-30 2019-10-01 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
US10500767B2 (en) 2015-09-30 2019-12-10 Compagnie Generale Des Etablissements Michelin Molding element for manufacturing a noise reducing tread
CN108136620B (en) * 2015-09-30 2020-06-16 米其林企业总公司 Moulding element and mould for manufacturing a noise-reduced tread
CN109795264A (en) * 2017-11-17 2019-05-24 东洋橡胶工业株式会社 Pneumatic tire

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