KR20120066420A - Flat building drum for greentire - Google Patents

Flat building drum for greentire Download PDF

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Publication number
KR20120066420A
KR20120066420A KR1020100127761A KR20100127761A KR20120066420A KR 20120066420 A KR20120066420 A KR 20120066420A KR 1020100127761 A KR1020100127761 A KR 1020100127761A KR 20100127761 A KR20100127761 A KR 20100127761A KR 20120066420 A KR20120066420 A KR 20120066420A
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KR
South Korea
Prior art keywords
bead
brother
turn
green tire
drum
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Application number
KR1020100127761A
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Korean (ko)
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KR101306042B1 (en
Inventor
이현규
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한국타이어 주식회사
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Priority to KR1020100127761A priority Critical patent/KR101306042B1/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
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • B29D2030/2614—Bladders associated with the building drum, e.g. bladders used for the toroidal expansion, bladders for turning-up the plies
    • 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
    • B29D2030/2657—Radially expandable and contractable drum comprising a set of circumferentially arranged rigid elements, e.g. fingers or arms

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

Abstract

PURPOSE: A flat building drum for green tires is provided to reduce air inflow rate by delivering uniform pressure to inside the green tire and to prevent break phenomenon in low series tire molding, thereby obtaining smooth inner profile. CONSTITUTION: A flat building drum for green tires comprises a bead lock(2), a shoulder finger(3), a turn up brother(4), and a main spindle(5). In the bead lock, a bead(1) is settled. The shoulder finger supports a bead filler by being installed near the bead lock. The turn up brother is turned up by the shoulder finger. The turn up brother is expanded by pneumatics. The turn up brother is expanded to inner side and thread edge part of the green tire(6). The main spindle rotates drum facilities.

Description

그린타이어를 제조하는 소경 성형드럼{Flat building drum for greentire}Small diameter drum for manufacturing green tires {Flat building drum for greentire}

본 발명은 고출력 차량용 로우시리즈 타이어(Low series tire)를 제조할 때 성형공정에서 그린타이어를 성형하는 소경 성형드럼에 관한 것으로, 더욱 상세하게는 그린타이어 성형시 이 그린타이어의 내부 사이드와 트레드 엣지(Edge)의 지지방식을 블라더(Bladder)로 이용하여 지지하는 그린타이어를 제조하는 소경 성형드럼에 관한 것이다.The present invention relates to a small-diameter forming drum for forming a green tire in a molding process when manufacturing a low-power tire for a high power vehicle, and more particularly, to an inner side and a tread edge of the green tire when forming a green tire. It relates to a small diameter forming drum for producing a green tire to support the support method of the edge (Bladder).

최근 전통적인 운송수단으로서 차량의 개념을 레져, 모터 스포츠를 포함한 일종의 문화 일부로 자리를 잡아가고 있기 때문에 차량의 성능은 점점 고성능화되고 있으며, 이런 차량의 고출력을 지원하기 위해 초고성능 타이어(Ultra High Performance Tire ; UHPT) 시장은 점점 커지고 있다.As the concept of vehicles has recently become a part of culture, including leisure and motor sports, the performance of vehicles has become increasingly high performance. Ultra High Performance Tire (Ultra High Performance Tire) to support the high output of these vehicles; UHPT) market is growing.

이런 상황에서 고출력 차량용 로우시리즈 타이어의 수요가 증가하고 있기 때문에 타이어 제조 메이커는 고유한 제조기술을 이용하여 이를 제조하고 있는 실정이다.In this situation, as the demand for low-power tires for high-power vehicles is increasing, tire makers manufacture them using unique manufacturing techniques.

일반적으로 소경 성형드럼을 활용하여 로우시리즈 타이어를 제조함에 있어서 도 2와 같은 소경 성형드럼을 사용하게 되는바, 도 2는 소경 성형드럼의 센터 테크를 기준으로 한쪽만을 도시하고 있는데, 이는 반대쪽도 동일한 구조로 되어 있기 때문이다.In general, when manufacturing a low-series tire using a small diameter forming drum, a small diameter forming drum as shown in FIG. 2 is used. FIG. 2 shows only one side based on the center tech of the small diameter forming drum. Because it is a structure.

즉, 비드(101)를 안착시키는 비드락(102)과, 이 비드락(102)에 이웃하여 설치하여 비드필러(101a)를 보유 지지해 주는 쇼울더 핑거(103), 이 쇼울더 핑거(103)에 의해 턴업되는 턴업 브라더(104) 및, 드럼설비를 회전시키는 메인 스핀들(105)로 이루어져 있으며, 그린타이어 성형시 도 3에 도시된 바와 같이 각 반제품을 카카스 성형드럼 위에 적층한 후 그린타이어 내부에 1 ~ 3bar의 공기압(화살표 방향)을 넣고 외부 스티처(107)을 이용하여 각 반제품을 압착시키는데, 비드(101)의 내측인 경우 쇼울더 핑거(103)가 상승하면서 비드필러(101a)를 압착하게 된다.That is, the bead lock 102 which seats the bead 101, the shoulder finger 103 which is installed adjacent to this bead lock 102, and holds the bead filler 101a, and this shoulder finger 103 is carried out. It consists of a turn-up brother 104 is turned up by, and the main spindle 105 for rotating the drum equipment, and as shown in Figure 3 during the green tire molding each semi-finished product laminated on the carcass molding drum and then inside the green tire Press the air pressure (arrow direction) of 1 ~ 3bar and press each semi-finished product by using the outer stitcher 107. In the case of the inside of the bead 101, the shoulder finger 103 is raised to press the bead filler 101a. do.

그러나 종래 이러한 구조는 상기 비드(101)는 강체로 지지하고 그린타이어(106)의 내부 사이드와 트레드부는 공기압이 지지하며서 "A"부분과 같이 꺾임부분이 발생하게 되는 문제점과, 트레드 압출물을 부착한 후에 이루어지는 스티처(107)에 의한 스티칭 과정(이는 스티처가 그린타이어를 압착하여 눌러주는 공정임)시, 그린타이어(106) 내부에 압력저하 및 단차 발생으로 인해 그린타이어(106) 구조 내에 에어가 포집되며, 이로 인해 가류공정 후 완성타이어 내부에 에어가 잔존하는 불량이 발생할 수 있다.However, in the conventional structure, the bead 101 is supported by a rigid body, and the inner side and the tread portion of the green tire 106 are supported by pneumatic pressure, so that a bent portion occurs such as an "A" portion, and a tread extrudate is attached. When the stitching process is performed by the stitcher 107 (the stitcher presses and presses the green tire), the air in the green tire 106 structure is reduced due to the pressure drop and the generation of the step inside the green tire 106. Is collected, which may cause defects in which air remains in the finished tire after the vulcanization process.

이에 본 발명은 상기와 같은 종래 문제점을 감안하여 발명된 것으로, 로우시리즈 타이어 성형시 비드필러 엣지부분의 꺾임 현상을 방지하면 원활한 내측 프로파일을 얻을 수 있으면서 균일한 압력을 그린타이어 내측에 전달하여 에어 유입의 발생을 줄일 수 있는 그린타이어를 제조하는 소경 성형드럼을 제공함에 그 목적이 있다.Accordingly, the present invention is in view of the above-described conventional problems. When the low-series tires are formed, the bead filler edge is prevented from being bent, and a smooth inner profile can be obtained. It is an object of the present invention to provide a small-diameter drum for producing a green tire that can reduce the occurrence of.

상기와 같은 목적을 달성하기 위한 본 발명은 비드가 안착되는 비드락과 이 비드락에 이웃 설치하여 비드필러를 보유 지지해 주는 쇼울더 핑거, 이 쇼울더 핑거에 의해 턴업되는 턴업 브라더 및, 드럼설비를 회전시키는 메인 스핀들로 이루어진 그린타이어를 제조하는 소경 성형드럼에 있어서, 상기 턴업 브라더는 공기압에 의해 팽창되어 그린타이어의 내부 사이드와 트레드 엣지까지 팽창되는 구조로 되어 있다.The present invention for achieving the above object is a bead lock on which the beads are seated and a shoulder finger to be installed adjacent to the bead lock to hold the bead filler, a turn-up brother is turned up by this shoulder finger, and the drum equipment is rotated In a small diameter forming drum for manufacturing a green tire consisting of a main spindle, the turn-up brother has a structure in which it expands by air pressure and expands to an inner side and a tread edge of the green tire.

이와 같은 본 발명에 따른 그린타이어를 제조하는 소경 성형드럼은 그린타이어 내부의 압력 발생시 비 브라더 형의 소경 성형드럼에 비해 균일한 압력을 그린타이어 내측에 전달하여 에어 유입 발생을 줄일 수 있으면서 로우시리즈 타이어 성형시 비드필러의 엣지부분에 꺾임 현상을 방지하여 원활한 내측 프로파일을 얻을 수 있는 효과를 갖는다.The small-diameter forming drum for manufacturing the green tire according to the present invention has a low series tire while reducing the inflow of air by transmitting a uniform pressure inside the green tire as compared to the non-brader-type small forming drum when the pressure inside the green tire is generated. It prevents the bending of the edge portion of the bead filler during molding has the effect of obtaining a smooth inner profile.

도 1은 본 발명에 따른 소경 성형드럼의 부분 단면도,
도 2는 통상적인 종래 소경 성형드럼의 한쪽 단면도,
도 3은 종래 소경 성형드럼의 부분 단면도이다.1 is a partial cross-sectional view of a small diameter forming drum according to the present invention,
Figure 2 is a cross-sectional view of a conventional conventional small diameter drum,
3 is a partial cross-sectional view of a conventional small diameter forming drum.

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

본 발명은 도 1에 도시된 바와 같이 비드(1)가 안착되는 비드락(2)과, 이 비드락(2)에 이웃 설치하여 비드필러(1a)를 보유 지지해 주는 쇼울더 핑거(3), 이 쇼울더 핑거(3)에 의해 턴업되는 턴업 브라더(4) 및, 드럼설비를 회전시키는 메인 스핀들(5)을 구비하여 이루어진 그린타이어를 제조하는 소경 성형드럼에 있어서, 상기 턴업 브라더(4)는 공기압에 의해 팽창되어 그린타이어(6)의 내부 사이드와 트레드 엣지 부분까지 팽창되는 구조로 이루어져 있다.As shown in FIG. 1, the bead lock 2 on which the bead 1 is seated, the shoulder finger 3 which is installed adjacent to the bead lock 2 and holds the bead filler 1a, In the small-diameter forming drum for producing a green tire comprising a turn-up brother (4) turned up by the shoulder finger (3) and a main spindle (5) for rotating drum equipment, the turn-up brother (4) is a pneumatic pressure. It is expanded by the structure consists of a structure that is expanded to the inner side and the tread edge portion of the green tire (6).

즉, 본 발명은 상기 턴업 브라더(1)를 그린타이어(6)의 내측으로 연장설치하고, 이 턴업 브라더(4)에 공급되는 공기압을 통상적인 공기 주입밸브를 이용하여 그 내부에 약 2 ~ 4bar의 공기가 충전될 수 있도록 되어 있다.That is, the present invention extends the turn-up brother 1 to the inside of the green tire 6, and the air pressure supplied to the turn-up brother 4 is about 2 to 4 bar therein using a conventional air injection valve. Air can be charged.

이 같이 공기압이 충전된 턴업 브라더(4)는 그린타이어(6)의 내측 프로파일을 따라 팽창하여 이 그린타이어(6)의 내측을 지지함에 따라 종래의 구조보다 우수한 압착효과를 나타내고, 균일한 내부 압착으로 에어 유입의 발생을 대폭 줄일 수 있도록 되어 있다.The air pressure-filled turn-up brother 4 expands along the inner profile of the green tire 6 to support the inside of the green tire 6, and thus exhibits a better compression effect than the conventional structure, and uniform internal compression. This greatly reduces the inflow of air.

1 : 비드(Bead),
2 : 비드락(Bead Lock),
3 : 쇼울더 핑거(Shoulder Finger)
4 : 턴업 브라더(Turn up Bladder),
5 : 메인 스핀들(Main spindle),
6 : 그린타이어.1: Bead,
2: bead lock,
3: Shoulder Finger
4: Turn up Bladder,
5: main spindle,
6: green tires.

Claims (1)

비드(1)가 안착되는 비드락(2)과, 이 비드락(2)에 이웃 설치하여 비드필러(1a)를 보유 지지해 주는 쇼울더 핑거(3), 이 쇼울더 핑거(3)에 의해 턴업되는 턴업 브라더(4) 및, 드럼설비를 회전시키는 메인 스핀들(5)을 구비하여 이루어진 그린타이어를 제조하는 소경 성형드럼에 있어서,
상기 턴업 브라더(4)는 공기압에 의해 팽창되어 그린타이어(6)의 내부 사이드와 트레드 엣지 부분까지 팽창되는 구조로 이루어진 것을 특징으로 하는 그린타이어를 제조하는 소경 성형드럼.The bead lock 2 to which the bead 1 is seated, the shoulder finger 3 which is installed adjacent to the bead lock 2 to hold the bead filler 1a, and which is turned up by the shoulder finger 3 In a small diameter forming drum for manufacturing a green tire comprising a turn-up brother (4) and a main spindle (5) for rotating drum equipment,
The turn-up brother (4) is a small diameter forming drum for producing a green tire, characterized in that the expansion is made by the air pressure to the inner side and the tread edge portion of the green tire (6).
KR1020100127761A 2010-12-14 2010-12-14 Flat building drum for greentire KR101306042B1 (en)

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KR1020100127761A KR101306042B1 (en) 2010-12-14 2010-12-14 Flat building drum for greentire

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Application Number Priority Date Filing Date Title
KR1020100127761A KR101306042B1 (en) 2010-12-14 2010-12-14 Flat building drum for greentire

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KR101306042B1 KR101306042B1 (en) 2013-09-09

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EP4005784A1 (en) 2020-11-30 2022-06-01 Dongbang Engineering Co., Ltd. Mechanical shoulderless tire building drum

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JP4423725B2 (en) 2000-02-16 2010-03-03 横浜ゴム株式会社 Turn-up bladder device for tire molding drum
KR100976582B1 (en) 2008-09-22 2010-08-17 한국타이어 주식회사 Greentire inside support finger of flat building drum

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