KR20110063963A - Tread rubber jointing method in the tire manufacturing - Google Patents

Tread rubber jointing method in the tire manufacturing Download PDF

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Publication number
KR20110063963A
KR20110063963A KR1020090120357A KR20090120357A KR20110063963A KR 20110063963 A KR20110063963 A KR 20110063963A KR 1020090120357 A KR1020090120357 A KR 1020090120357A KR 20090120357 A KR20090120357 A KR 20090120357A KR 20110063963 A KR20110063963 A KR 20110063963A
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South Korea
Prior art keywords
tread rubber
concavo
convex part
inclined surface
tire
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KR1020090120357A
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Korean (ko)
Inventor
김영진
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한국타이어 주식회사
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Priority to KR1020090120357A priority Critical patent/KR20110063963A/en
Publication of KR20110063963A publication Critical patent/KR20110063963A/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)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
    • 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
    • B29D30/42—Endless textile bands without bead-rings
    • B29D2030/421—General aspects of the joining methods and devices for creating the bands
    • B29D2030/422—Butt joining
    • 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
    • B29D30/42—Endless textile bands without bead-rings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

PURPOSE: A tread rubber bonding method in the tire manufacturing process is provided to prevent a tire thickness from getting thin in a tire transporting or queuing process due to a glissement of junction parts. CONSTITUTION: The tread rubber bonding method includes following steps. A tread rubber(2) is tied and installed to a drum(1). Inclined surfaces(3,4) are formed in both ends of the tread rubber and one inclined surface lies one upon another. Concavo-convex part is formed to each corresponding inclined surface. Each inclined surface is bonded to be interlocked with each other by the concavo-convex part. The concavo-convex part includes a protrusion and a concave part. The protrusion is formed in one side of the incline surface of the concavo-convex part. The concave part is formed in the other side of the incline surface of the concavo-convex part.

Description

타이어 제조 공정에 있어서의 트레드 고무 접합 방법{Tread rubber jointing method in the tire manufacturing}Tread rubber jointing method in the tire manufacturing}

본 발명은 타이어제조 공정중의 그린타이어 제조시에 있어서의 트레드고무 설치 방법에 관한 것이다.The present invention relates to a tread rubber installation method in manufacturing a green tire during a tire manufacturing process.

타이어를 제조하는 공정은, 그린타이어를 제조하는 공정과 그린타이어에 열과 유황을 가하는 가황공정으로 대별될 수 있는 바, 그린타이어를 제조함에 있어서는, 드럼에 인너라이너층을 형성시키는 고무층을 설치하고, 그 위에 카카스층을 설치하며, 카카스층의 중심부에 벨트층을 설치하고, 벨트층 위에 트레드고무를 설치하며, 트레드고무 양측에 사이드월고무를 설치하고, 사이드월 외측의 카카스층 양단에 비드부를 설치한 후, 드럼으로부터 빼어내어 형성시키게 된다. 본 발명은 이와 같은 그린 타이어 제조 공정에 있어서, 트레드고무를 설치하는 기술에 관한 것이다.The tire manufacturing process can be roughly divided into a process of manufacturing a green tire and a vulcanization process of applying heat and sulfur to the green tire. In manufacturing a green tire, a rubber layer for forming an inner liner layer is provided on a drum. Carcass layer is installed on it, belt layer is installed in the center of the carcass layer, tread rubber is installed on the belt layer, sidewall rubber is installed on both sides of the tread rubber, and on both ends of the carcass layer outside the sidewall. After the bead portion is provided, it is removed from the drum and formed. The present invention relates to a technique for installing a tread rubber in such a green tire manufacturing process.

트레드고무를 드럼에 설치함에 있어서는 판상의 트레드고무를 드럼에 감싸 듯 말아 트레드 양단을 붙여 설치하게 되는데, 트레드 고무 양단을 잇대어 설치하는 방법으로는, 첨부된 도면 도1의 (가)에 도시된 바와 같이, 트레드 고무 양단을 맞대어 결합 설치하는 버트 조인트(Butt joint) 방법, 첨부된 도면 도1의 (나)(다)에 도시된 바와 같이 트레드 고무 양단이 겹쳐지게 하여 계면의 넓이가 넓게 설치하는 오버 레이(Over lay) 조인트 방법이 있으며, 오버레이 조인트 방법에 있어서도, 겹쳐지는 양측 부위가 경사면으로 된 오버레이 조인트 방법(나)과 겹쳐지는 양측 부위가 계단형으로 된 오버레이 조인트 방법(다)이 있다. 위와 같은 조인트 방법 중 실제로 타이어를 제조함에 있어서는 겹침 부위에 있어서의 계면 면적을 확대시키고자 하는 오버레이 조인트 방법이 흔히 사용되고 있다. 그러나, 이러한 오버레이 조인트 방법으로 트레드 양단을 결착시킨다 하더라도 차기 공정인 가황 공정 수행을 위하여 그린타이어를 운반하고 기다리는 과정에서 접합된 트레드 양단이 서로 미끄러져 이격되는 현상이 발생할 수 있고 이러한 미끄러짐이 발생하게되면 접합 부위의 두께가 얇아져 타이어의 유니포미티(Uniformity)를 훼손하게되는 중대한 결점이 있다. In the installation of the tread rubber on the drum, the tread rubber is rolled up as if wrapped around the drum, and both ends of the tread are attached to each other. As a method of connecting both ends of the tread rubber, the tread rubber is installed as shown in FIG. Similarly, butt joint (butt joint) method for mounting the two ends of the tread rubber against each other, as shown in Fig. 1 (b) (c) of the accompanying drawings, the ends of the tread rubber overlap so as to install a wide area of the interface There is an over lay joint method, and also in the overlay joint method, there is an overlay joint method (c) in which both sides overlapped with a stepped overlay joint method (b) in which an inclined surface overlaps. In the above-described joint method, in actual tire manufacturing, an overlay joint method for increasing the interface area at the overlapped part is commonly used. However, even if the two ends of the tread is bound by the overlay joint method, the two ends of the treads that are joined may slip away from each other in the process of transporting and waiting for the green tire to perform the next vulcanization process. There is a significant drawback that the thickness of the joints becomes thinner, which undermines the uniformity of the tire.

이에 본 발명은 트레드고무의 양단에 경사면을 형성시켜 트레드 양단의 경사면을 겹쳐지게 접합시키는 오버레이 조인트 방법으로 트레드 고무를 설치하되, 그린타이어를 가황하기 위하여 운반하거나 대기하는 도중 오버 랩(Over wrap)된 접합 부위가 미끄러져 접합부위의 두께가 얇아지는 현상이 발생되지 아니하게 하는 트레드고무 설치방법을 제공하여야 한다는 과제를 해결하고자 한다.Therefore, the present invention is to install the tread rubber as an overlay joint method for forming the inclined surfaces at both ends of the tread rubber to overlap the inclined surfaces of both tread, overlapped during transportation or waiting to vulcanize the green tire In order to solve the problem of providing a tread rubber installation method to prevent the phenomenon that the joint portion is slipped and the thickness of the joint portion is not generated.

위와 같은 과제를 해결하기 위하여 본 발명은, 트레드고무의 양단에 경사면을 형성시켜 트레드 양단의 경사면을 겹쳐지게 접합시키는 오버레이 조인트법으로 트레드를 설치하되, 오버 랩(Over wrap)되는 양측 경사면 중 일측 경사면에는 돌기를 형성시키고 타측 경사면에는 상기 돌기에 대응하는 요홈을 형성시켜 양측을 접합시킴으로써, 일측 경사면의 돌기가 타측 경사면의 요홈에 결합되어 트레드 양단의 결착을 완강히 하는 방법을 제공한다.In order to solve the above problems, the present invention, by forming an inclined surface on both ends of the tread rubber to install the tread by the overlay joint method to join the inclined surfaces of both ends of the tread, one side of the inclined surface of the overlapping (overlap) The protrusion is formed on the other inclined surface to form a groove corresponding to the protrusion to join both sides, thereby providing a method for the protrusion of one inclined surface is coupled to the groove of the other inclined surface to loosen the binding of both ends of the tread.

위와 같은 본 발명의 방법은, 트레드 고무의 양측 접합 경사면이 돌기와 요홈으로 결착되어 미끄러짐이 발생되지 아니하며 따라서 겹쳐 연결되는 부위에 미끄러짐으로 인한 얇아짐 염려가 없게되고 따라서 트레드 두께 변경으로 인한 타이어 유포미티 손상의 염려를 감소시킬 수 있는 효과가 있다.In the method of the present invention as described above, both sides of the joint slope of the tread rubber is bound with protrusions and grooves so that no slip is generated, and thus there is no fear of thinning due to slipping at the overlapped areas, and thus tire eucomity damage due to tread thickness change. There is an effect that can reduce the worry of.

드럼(1)에 트레드 고무(2)를 감아 설치하되 트레드고무(2)의 양단에 경사면(3, 4)을 형성시켜 양측 경사면이 겹쳐지게 설치함에 있어서, 본 발명은, 양 측 경사면(3, 4)에 서로 대응하는 요철부를 형성시켜서 양측 경사면(3, 4)이 요철부에 의하여 맞물리게 접합시키는 방법을 제공한다.While the tread rubber 2 is wound around the drum 1, the inclined surfaces 3 and 4 are formed at both ends of the tread rubber 2 so that the two inclined surfaces overlap each other. Provided is a method of forming concave and convex portions corresponding to each other in 4) so that both inclined surfaces 3 and 4 are engaged by the concave and convex portions.

양측 경사면(3, 4)에 형성시키는 요철부는 서로 대응하는 톱니형으로 형성시켜 접합시킬 수 있으나, 본 발명은 이에서 나아가, 미끄러짐의 방지효과를 증진시키기 위하여 일측 경사면(3)에는 돌출부(31)를 형성시키고, 타측 경사면(4)에는 요함부(41)를 형성시켜서 양측 경사면이 완강하게 결합되게 하는 접합 방법을 제공한다.Uneven parts formed on both inclined surfaces (3, 4) can be joined to each other by forming a corresponding tooth shape, but the present invention further extends from the one side inclined surface (3) in order to enhance the effect of preventing slips (31) And a concave portion 41 on the other inclined surface 4 to provide a joining method in which both inclined surfaces are firmly coupled.

돌출부(31)나 요함부(41)의 형상은 첨부된 도면에 도식된 사각기둥과 사각 기둥홈의 형상에 한하지 아니하며 원기둥모양, 세모모양 등 임의 형상의 돌출부나 요함부로 형성될 수 있음은 물론이다.The shape of the protrusions 31 or recesses 41 is not limited to the shape of the square pillars and the square pillar grooves illustrated in the accompanying drawings, and may be formed as protrusions or recesses of any shape such as a cylinder shape or a triangular shape. to be.

도1은 종래의 트레드고무 설치 방법을 도시한 간략 설명도로서1 is a simplified explanatory view showing a conventional tread rubber installation method

(가)는 버트 조인트 방법  (A) Butt joint method

(나)(다)는 오버 레이 조인트 방법으로, (나)는 접합부위가 경사면으로 되는 조인트 방법이고, (다)는 접합 부위가 계단으로 되는 조인트 방법임.  (B) (C) is the overlay joint method, (B) is the joint method where the joint is a slope, and (C) is the joint method where the joint is a step.

도2는 본 발명의 방법인 조인트 방법의 일 예시 설명도2 is an exemplary explanatory view of a joint method which is the method of the present invention.

도3은 본 발명의 방법인 조인트 방법의 일 예시 발췌 사시도Figure 3 is a perspective view of an example of a joint method of the present invention

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1. 드럼Drum

2. 트레드고무2. Tread rubber

3, 4. 경사면3, 4. slope

31. 돌출부31.Protrusion

41. 요함부 41.

Claims (2)

드럼(1)에 트레드 고무(2)를 감아 설치하되 트레드고무(2)의 양단에 경사면(3, 4)을 형성시켜 양측 경사면이 겹쳐지게 설치함에 있어서, 양측 경사면(3, 4)에 서로 대응하는 요철부를 형성시켜서 양측 경사면(3, 4)이 요철부에 의하여 맞물리게 접합시키는 것을 특징으로 하는 타이어 제조 공정에 있어서의 트레드 고무 접합 방법.The tread rubber 2 is wound around the drum 1, and inclined surfaces 3 and 4 are formed at both ends of the tread rubber 2 so that both inclined surfaces overlap each other. A tread rubber bonding method in a tire manufacturing process characterized by forming an uneven portion to be joined so that both inclined surfaces (3, 4) are engaged by the uneven portion. 제1항에 있어서, 요철부는 일측 경사면에 형성시킨 돌출부와 타측 경사며에 형성시킨 요함부로 된 것임을 특징으로 하는 타이어 제조 공정에 있어서의 트레드 고무 접합 방법.The tread rubber bonding method in a tire manufacturing process according to claim 1, wherein the uneven portion is a protrusion formed on one slope and a recess formed on the other slope.
KR1020090120357A 2009-12-07 2009-12-07 Tread rubber jointing method in the tire manufacturing KR20110063963A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017109434A (en) * 2015-12-18 2017-06-22 東洋ゴム工業株式会社 Tire and manufacturing method of the same
KR20200106330A (en) 2019-03-04 2020-09-14 류길수 Method for manufacturing tire having improved durability introduced surface treatment process of rubber sheet and tread bonding process using plasma
KR102272736B1 (en) * 2020-04-02 2021-07-05 넥센타이어 주식회사 A structure of tire tread end

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017109434A (en) * 2015-12-18 2017-06-22 東洋ゴム工業株式会社 Tire and manufacturing method of the same
KR20200106330A (en) 2019-03-04 2020-09-14 류길수 Method for manufacturing tire having improved durability introduced surface treatment process of rubber sheet and tread bonding process using plasma
KR102272736B1 (en) * 2020-04-02 2021-07-05 넥센타이어 주식회사 A structure of tire tread end

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