KR20010088682A - Green Tire Manufacture Method - Google Patents

Green Tire Manufacture Method Download PDF

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Publication number
KR20010088682A
KR20010088682A KR1020010050230A KR20010050230A KR20010088682A KR 20010088682 A KR20010088682 A KR 20010088682A KR 1020010050230 A KR1020010050230 A KR 1020010050230A KR 20010050230 A KR20010050230 A KR 20010050230A KR 20010088682 A KR20010088682 A KR 20010088682A
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KR
South Korea
Prior art keywords
semi
drum
finished product
green tire
sequentially
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KR1020010050230A
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Korean (ko)
Inventor
장윤태
Original Assignee
조충환
한국타이어 주식회사
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Priority to KR1020010050230A priority Critical patent/KR20010088682A/en
Publication of KR20010088682A publication Critical patent/KR20010088682A/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)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • 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)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/244—Drums for manufacturing substantially cylindrical tyre components with cores or beads, e.g. carcasses
    • B29D30/246—Drums for the multiple stage building process, i.e. the building-up of the cylindrical carcass is realised on one drum and the toroidal expansion is realised after transferring on another drum
    • 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)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/30—Applying the layers; Guiding or stretching the layers during application

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

Abstract

PURPOSE: Provided is a production process of green tire which enlarges the diameter of a second semi-product in producing the second semi-product to eliminate residual internal stress so that it helps binding power between components in a belt and a tread part after vulcanization. CONSTITUTION: The production process of green tire comprises the steps of: (i) jointing an innerliner, a carcass or so on sequentially on a band drum to produce a ring-typed band member; (ii) after inserting the band member into the mold drum of a first mold device(12), jointing bead, a rim cushion, a side wall or so on sequentially to produce a ring-typed first semi-product; (iii) jointing multiple belts and treads on the belt drum sequentially to produce a ring-typed second semi-product; and (iv) after inserting the second and the first semi-product into a shaping drum, jointing them each other to produce ring-typed green tire with an arc type in section.

Description

그린타이어 제조방법{Green Tire Manufacture Method}Green Tire Manufacture Method

본 발명은 그린타이어를 제조하는 방법에 관한 것으로, 제 2반제품을 제조하는 공정상에서 제 2반제품의 직경을 팽창시켜서, 이의 잔류응력이 제거되도록 하여, 직경확대로 인한 잔류응력에 의해 발생되는 문제점들이 해소되도록 하는 그린타이어의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a green tire, in the process of manufacturing the second semi-finished product by expanding the diameter of the second semi-finished product, so that the residual stress thereof is removed, problems caused by the residual stress due to the diameter expansion It relates to a manufacturing method of the green tire to be eliminated.

주지된 바와 같이, 타이어는 다수의 부재들을 접합하여 그린타이어를 성형한 후에 이를 가류시켜서 완성하게 된다.As is well known, the tire is completed by joining a plurality of members to form a green tire and then vulcanizing it.

상기 그린타이어의 제조방법을 도 1에 도시된 그린타이어 성형장치(10)와 연계하여 설명해 보면, 밴드성형장치(11)의 밴드드럼상에 인너라이너와 카카스 및 체퍼 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 밴드부재를 제조하는 공정과 ; 제1 성형장치(12)의 성형드럼상에 밴드부재를 끼워넣은 후, 밴드부재의 외주면에 비드(비드필라 포함)와 림쿠션(험프스트립 포함) 및 사이드월(숄더엣지 포함) 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제1 반제품을 제조하는 공정 ; 벨트드럼장치(13)의 벨트드럼상에 다수의 벨트와 트래드를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제2 반제품을 제조하는 공정 및 ; 쉐이핑장치(14)의 쉐이핑드럼상에 제2 반제품과 제1 반제품을 순차적으로 끼워넣은 후, 이들을 상호 접합시키면서 굴곡성형하여, 단면이 호를 이루면서 전체 형상이 링형태를 이루는 그린타이어를 완성하는 공정으로 이루어진다. 여기서, 상기 밴드성형장치(11)와 제1 성형장치(12)는 각각 독립된 하나의 유닛을 이루며, 상기 벨트드럼장치(13)와 쉐이핑장치(14)는 이들(13,14)을 하나로 묶어서 통상 제2 성형장치라고 칭한다. 또한, 도 1에는 도시되지 않았지만, 각 구성장치(11,12,13,14,20)들 간에는 반제품들(밴드부재, 제1 반제품, 제2 반제품)을 공정진행방향으로 이송하는 이송수단들이 설치된다.Referring to the manufacturing method of the green tire in connection with the green tire forming apparatus 10 shown in Figure 1, the components such as the inner liner, carcass and chafer on the band drum of the band forming apparatus 11 in sequence Bonding to form a band member whose overall shape is ring-shaped; After inserting the band member on the forming drum of the first molding apparatus 12, components such as beads (including bead pillars), rim cushions (including hump strips) and sidewalls (including shoulder edges) are formed on the outer circumferential surface of the band member. Joining sequentially to produce a first semi-finished product whose overall shape is ring-shaped; A step of sequentially joining a plurality of belts and treads on the belt drum of the belt drum device 13 to produce a second semi-finished product whose overall shape is ring-shaped; The second semi-finished product and the first semi-finished product are sequentially inserted on the shaping drum of the shaping device 14, and then bent and bonded to each other, thereby completing a green tire having an arc in cross section and a ring shape. Is done. Here, the band forming apparatus 11 and the first forming apparatus 12 each constitute an independent unit, and the belt drum apparatus 13 and the shaping apparatus 14 bundle these 13 and 14 into one unit. It is called a 2nd shaping | molding apparatus. In addition, although not shown in Figure 1, the transfer means for transferring the semi-finished products (band member, the first semi-finished product, the second semi-finished product) between each component device (11, 12, 13, 14, 20) is installed do.

상기 완성되어진 그린타이어는 이후 가류장치(20)의 가류금형에 삽입되어 가류되어서 제품타이어로 제조된다.The finished green tire is then inserted into the vulcanization mold of the vulcanizing device 20 to be vulcanized and manufactured into a product tire.

한편, 상기 가류장치(20)에 의한 그린타이어의 가류시, 브래더(혹은 에어백)의 팽창 압력에 의해서 그린타이어의 직경(내·외경)이 확대되는데, 그 확대량은 제1벨트와 카카스의 접합면을 기준으로 할 때, 통상 1.5 ∼ 5.0% 정도를 이룬다.On the other hand, when the green tire is vulcanized by the vulcanizing device 20, the diameter (inner and outer diameter) of the green tire is enlarged by the inflation pressure of the bladder (or airbag), and the enlargement amount is the first belt and the carcass. Based on the joining surface of, it is usually about 1.5 to 5.0%.

이와같이, 그린타이어의 직경이 확대되면, 가류완료 후에 잔류응력에 의해서, 타이어 구성인자들간의 결속력이 불균일하게 분포되므로, 제품타이어의 균일성과 내구성이 저하되는 문제가 발생된다.In this way, when the diameter of the green tire is enlarged, since the binding force between the tire constituent factors is unevenly distributed by residual stress after the completion of vulcanization, there is a problem that the uniformity and durability of the product tire are deteriorated.

그린타이어의 중심쪽에 위치되는 상기 제1반제품(인너라이너 + 카카스 + 체퍼 + 비드 + 림쿠션 + 사이드월)의 경우에는 직경확대가 상대적으로 작으므로, 가류완료 후에 잔류응력의 발생이 미미하다고 할 수 있지만, 그린타이어의 외곽을 이루는 제2반제품(벨트 + 트래드)의 경우에는 직경확대가 비교적 크게 발생되므로, 가류완료 후에 잔류응력이 크게 발생된다.In the case of the first semi-finished product (inner liner + carcass + chafer + bead + rim cushion + sidewall) located at the center of the green tire, the diameter enlargement is relatively small, so that residual stress is not generated after vulcanization completion. However, in the case of the second semi-finished product (belt + tread) that forms the outer part of the green tire, the diameter enlargement is relatively large, so that the residual stress is large after the completion of vulcanization.

그러나, 상기 종래 기술에 따르면, 제2 반제품을 제조하는 공정이 단지 직경변화가 없는 고정형 벨트드럼상에 벨트와 트래드를 순차적으로 감아서 상호 접합하도록 되어 있어서, 그린타이어 가류시 직경확대로 인해 발생되는 문제들을 해소할 수 없었다.However, according to the prior art, the process of manufacturing the second semi-finished product is only to be sequentially bonded by winding the belt and the tread on a fixed belt drum with no change in diameter, which is caused by diameter expansion during green tire vulcanization. Problems could not be solved.

따라서, 그린타이어의 가류공정시의 직경확대로 인해서, 가류완료 후에 벨트와 트래드부분의 구성인자들의 결속력이 잔류응력에 의해서 불균일하게 분포되어, 제품타이어의 균일성과 내구성이 저하되는 문제가 발생되었다.Therefore, due to the expansion of the diameter of the green tire during the vulcanization process, the binding force of the constituent factors of the belt and the tread portion is unevenly distributed by the residual stress after the completion of the vulcanization, resulting in a problem that the uniformity and durability of the product tire are deteriorated.

더욱이, 벨트가 4층 이상으로 구비되는 대형 타이어의 경우에는 상기 문제점이 더욱 심각하게 발생된다.Moreover, the problem is more serious in the case of large tires having four or more layers of belts.

이에 본 발명은 상기와 같은 문제를 해소하기 위해 발명된 것으로, 제2 반제품을 제조하는 공정상에서 제2 반제품의 직경을 팽창시켜서, 이의 잔류응력이 제거되도록 하여, 직경확대로 인한 잔류응력에 의해 발생되는 문제점들이 해소되도록 하는 그린타이어의 제조방법을 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the above problems, by expanding the diameter of the second semi-finished product in the process of manufacturing the second semi-finished product, so that the residual stress thereof is removed, generated by the residual stress due to the diameter expansion It is an object of the present invention to provide a method for manufacturing a green tire to solve the problems.

도 1은 그린타이어 제조장치의 주요구성요소들을 도시한 도시한 도면이다.1 is a view showing the main components of the green tire manufacturing apparatus.

10 ; 그린타이어 성형장치, 11 ; 밴드성형장치,10; Green tire forming apparatus, 11; Band Forming Device,

12 ; 제1성형장치, 13 ; 벨트드럼장치,12; First molding apparatus, 13; Belt Drum Unit,

14 ; 쉐이핑장치, 20 ; 가류장치.14; Shaping device, 20; Vulcanizer.

상기와 같은 목적을 달성하기 위한 본 발명은, 밴드성형장치의 밴드드럼상에 인너라이너와 카카스 및 체퍼 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 밴드부재를 제조하는 공정과 ; 제1 성형장치의 성형드럼상에 밴드부재를 끼워넣은 후, 밴드부재의 외주면에 비드(비드필라 포함)와 림쿠션(험프스트립 포함) 및 사이드월(숄더엣지 포함) 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제1 반제품을 제조하는 공정 ; 벨트드럼장치의 벨트드럼상에 다수의 벨트와 트래드를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제2 반제품을 제조하는 공정 및 ; 쉐이핑장치의 쉐이핑드럼상에 제2 반제품과 제1 반제품을 순차적으로 끼워넣은 후, 이들을 상호 접합시키면서 굴곡성형하여, 단면이 호를 이루면서 전체 형상이 링형태를 이루는 그린타이어를 완성하는 공정으로 이루어진 그린타이어 제조방법에 있어서, 상기 제2 반제품을 제조하는 공정시, 다수의 벨트와 트래드를 벨트드럼에 순차적으로 접합시킨 후에, 벨트드럼의 직경을 임의의 값만큼 확대하는 것을 특징으로 하는 방법으로 되어 있다.In order to achieve the above object, the present invention, by connecting the inner liner and the components such as carcass and chafer sequentially on the band drum of the band forming apparatus, to produce a band member having a ring shape as a whole And; After inserting the band member on the forming drum of the first molding apparatus, components such as beads (including bead pillars), rim cushions (including hump strips) and sidewalls (including shoulder edges) are sequentially arranged on the outer circumferential surface of the band member. Bonding to form a first semi-finished product whose overall shape is ring-shaped; A step of sequentially joining a plurality of belts and treads on a belt drum of the belt drum device to produce a second semi-finished product whose overall shape is ring-shaped; The second semi-finished product and the first semi-finished product are sequentially inserted on the shaping drum of the shaping device, and then bent and bonded together to form a green tire having a circular cross section and a ring-shaped green tire. In the tire manufacturing method, in the process of manufacturing the second semi-finished product, after joining a plurality of belts and treads to the belt drum sequentially, the diameter of the belt drum is enlarged by an arbitrary value. .

이하 본 발명을 첨부된 예시도면을 참고로 하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 그린타이어 제조방법은, 밴드성형장치(11 ; 도 1 참조)의 밴드드럼상에 인너라이너와 카카스 및 체퍼 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 밴드부재를 제조하는 공정과 ; 제1 성형장치(12 ; 도 2 참조)의 성형드럼상에 밴드부재를 끼워넣은 후, 밴드부재의 외주면에 비드(비드필라 포함)와 림쿠션(험프스트립 포함) 및 사이드월(숄더엣지 포함) 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제1 반제품을 제조하는 공정 ; 벨트드럼장치(13 ; 도 3 참조)의 벨트드럼상에 다수의 벨트와 트래드를 순차적으로 접합시킨 후에, 벨트드럼의 직경을 임의의 값만큼 확대시켜서, 전체 형상이 링형태를 이루는 제2 반제품을 제조하는 공정 및 ; 쉐이핑장치(14 ; 도 4 참조)의 쉐이핑드럼상에 제2 반제품과 제1 반제품을 순차적으로 끼워넣은 후, 이들을 상호 접합시키면서 굴곡성형하여, 단면이 호를 이루면서 전체 형상이 링형태를 이루는 그린타이어를 완성하는 공정으로 이루어진다.In the method of manufacturing the green tire according to the present invention, an inner liner, a carcass, and a chafer are sequentially joined to the band drum of the band forming apparatus 11 (see FIG. 1), and the band is formed in a ring shape as a whole. Manufacturing a member; After inserting the band member on the forming drum of the first molding apparatus 12 (see FIG. 2), the bead (including the bead pillar), the rim cushion (including the hump strip) and the sidewall (including the shoulder edge) are formed on the outer circumferential surface of the band member. A step of sequentially joining components such as the first step to produce a first semi-finished product whose overall shape is ring-shaped; After sequentially joining a plurality of belts and treads on the belt drum of the belt drum device 13 (see FIG. 3), the diameter of the belt drum is enlarged by an arbitrary value to obtain a second semi-finished product whose overall shape is ring-shaped. Manufacturing process; The second semi-finished product and the first semi-finished product are sequentially inserted on the shaping drum of the shaping device 14 (see FIG. 4), and then bent while joining each other to form a green tire having an arc in cross section and a ring shape. It consists of a process to complete.

본 발명에 따르면, 제2 반제품을 제조하는 공정에서 제2 반제품의 직경을 확대시키므로, 이의 잔류응력이 제거되어, 가류시 그린타이어의 직경이 확대되더라도, 가류완료 후에 벨트와 트래드부분의 구성인자들의 결속력이 균일하게 유지되게 된다.According to the present invention, since the diameter of the second semi-finished product is enlarged in the process of manufacturing the second semi-finished product, even though the residual stress thereof is removed, even if the diameter of the green tire is enlarged during vulcanization, The binding force is kept uniform.

아래 표 1은 종래 기술에 따른 타이어와, 본 발명에 따른 타이어의 물성실험값을 도시한 것이다.Table 1 below shows the physical property test values of the tire according to the prior art and the tire according to the present invention.

강성의 편차(kgf)Variation of Stiffness (kgf) 내구성(%)durability(%) 종래 기술에 따른 타이어Tire according to the prior art 9090 100100 본 발명에 따른 타이어Tire according to the invention 6060 150150

여기서, 본 일예에서는, 타이어의 접지폭이 180 ∼ 300mm인 중하중용 래디알 타이어를 그 대상으로 하였고, 본 발명에 따른 타이어의 경우, 확대된 벨트드럼의 직경(DX)은 초기 벨트드럼 직경(D)의 1.005 ∼ 1.030배의 범위를 만족하도록 하였다.Here, in the present example, a heavy load radial tire having a ground width of the tire of 180 to 300 mm is used as the object, and in the case of the tire according to the present invention, the diameter D X of the enlarged belt drum is the initial belt drum diameter ( The range of 1.005 to 1.030 times of D) was satisfied.

상기 표 1을 참고해 보면, 본 발명에 따른 타이어가 종래 기술에 따른 타이어에 비해서 균일성과 내구성이 모두 우수하다는 것을 알 수 있다.Referring to Table 1, it can be seen that the tire according to the present invention is superior in both uniformity and durability as compared to the tire according to the prior art.

이상 상기한 바와 같은 본 발명에 따르면, 제2 반제품을 제조하는 공정에서 제2 반제품의 직경을 확대시켜서 이의 잔류응력을 제거하므로, 가류시 그린타이어의 직경이 확대되더라도, 가류완료 후에 벨트와 트래드부분의 구성인자들의 결속력이 균일하게 유지된다.According to the present invention as described above, since the diameter of the second semi-finished product is removed in the process of manufacturing the second semi-finished product to remove the residual stress, even if the diameter of the green tire is expanded during vulcanization, the belt and the tread portion after the completion of vulcanization The binding force of the constituents of is kept uniform.

따라서, 제품타이어의 내구성이 향상되고, 제품 신뢰성이 향상되는 효과가 있다.Therefore, the durability of the product tire is improved and product reliability is improved.

Claims (2)

밴드성형장치(11)의 밴드드럼상에 인너라이너와 카카스 및 체퍼 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 밴드부재를 제조하는 공정과 ; 제1 성형장치(12)의 성형드럼상에 밴드부재를 끼워넣은 후, 밴드부재의 외주면에 비드(비드필라 포함)와 림쿠션(험프스트립 포함) 및 사이드월(숄더엣지 포함) 등의 구성요소를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제1반제품을 제조하는 공정 ; 벨트드럼장치(13)의 벨트드럼상에 다수의 벨트와 트래드를 순차적으로 접합시켜서, 전체 형상이 링형태를 이루는 제2 반제품을 제조하는 공정 및 ; 쉐이핑장치(14)의 쉐이핑드럼상에 제2 반제품과 제1 반제품을 순차적으로 끼워넣은 후, 이들을 상호 접합시키면서 굴곡성형하여, 단면이 호를 이루면서 전체 형상이 링형태를 이루는 그린타이어를 완성하는 공정으로 이루어진 그린타이어 제조방법에 있어서,A step of sequentially joining components such as an inner liner and a carcass and a chafer on the band drum of the band forming apparatus 11 to produce a band member having an overall ring shape; After inserting the band member on the forming drum of the first molding apparatus 12, components such as beads (including bead pillars), rim cushions (including hump strips) and sidewalls (including shoulder edges) are formed on the outer circumferential surface of the band member. Joining sequentially to produce a first semi-finished product whose overall shape is ring-shaped; A step of sequentially joining a plurality of belts and treads on the belt drum of the belt drum device 13 to produce a second semi-finished product whose overall shape is ring-shaped; The second semi-finished product and the first semi-finished product are sequentially inserted on the shaping drum of the shaping device 14, and then bent and bonded to each other to form a green tire having an arc in cross section and a ring shape. In the green tire manufacturing method consisting of, 상기 제2 반제품을 제조하는 공정시, 다수의 벨트와 트래드를 벨트드럼에 순차적으로 접합시킨 후에, 벨트드럼의 직경을 임의의 값만큼 확대하는 것을 특징으로 하는 그린타이어 제조방법.In the process of manufacturing the second semi-finished product, after the plurality of belts and treads are sequentially bonded to the belt drum, the diameter of the belt drum is enlarged by an arbitrary value. 제 1항에 있어서, 상기 확대된 벨트드럼의 직경(DX)은, 타이어의 접지폭이 180 ∼ 300mm인 중하중용 래디알 타이어인 경우, 초기 벨트드럼 직경(D)의 1.005 ∼ 1.030배의 범위를 만족하는 것을 특징으로 하는 그린타이어 제조방법.The diameter (D X ) of the enlarged belt drum is in the range of 1.005 to 1.030 times the initial belt drum diameter (D) in the case of a heavy-load radial tire having a ground width of the tire of 180 to 300 mm. Green tire manufacturing method characterized in that to satisfy.
KR1020010050230A 2001-08-21 2001-08-21 Green Tire Manufacture Method KR20010088682A (en)

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