KR100258739B1 - Bead locking device for manufacturing tire - Google Patents

Bead locking device for manufacturing tire Download PDF

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Publication number
KR100258739B1
KR100258739B1 KR1019970046209A KR19970046209A KR100258739B1 KR 100258739 B1 KR100258739 B1 KR 100258739B1 KR 1019970046209 A KR1019970046209 A KR 1019970046209A KR 19970046209 A KR19970046209 A KR 19970046209A KR 100258739 B1 KR100258739 B1 KR 100258739B1
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KR
South Korea
Prior art keywords
bead
locking device
bead locking
tire
contractible
Prior art date
Application number
KR1019970046209A
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Korean (ko)
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KR19990024837A (en
Inventor
이태희
Original Assignee
홍건희
한국타이어주식회사
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Priority to KR1019970046209A priority Critical patent/KR100258739B1/en
Publication of KR19990024837A publication Critical patent/KR19990024837A/en
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Publication of KR100258739B1 publication Critical patent/KR100258739B1/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
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • 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
    • B29D2030/2628—Bladders for shaping the inner parts of the tyre beads or sidewalls
    • 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
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3214—Locking the beads on the drum; details of the drum in the bead locking areas, e.g. drum shoulders

Abstract

PURPOSE: A bead locking apparatus for manufacturing a tire is provided to be used in common to the tires of various size, to improve the productivity of a tire, and to lower the inferiority rate of a bead. CONSTITUTION: A bead locking apparatus is formed with a contractible and expandable member(3) on the circumference of a rim(2). The contractible and expandable member is contracted or expanded by using inlet air. The rim forms a short projected portion on the both side ends of the bead locking apparatus. A recess(31) is formed on the upper central portion of the contractible and expandable member to allow a bead(1) to be rested. The outer diameter of the contractible and expandable member is freely adjusted, thereby tires of various size are formed by using one bead locking apparatus. Also, since the compression of the bead is easily adjusted, the inferiority rate of the bead is lowered.

Description

타이어 제조용 비드 록킹(Locking)장치Bead Locking Device for Tire Manufacturing

본 발명은 타이어의 성형 공정에서 성형 드럼에 설치되는 비드를 고정시키는 비드 록킹장치에 관한 것으로서, 더욱 상세하게는 하나의 비드 록킹장치로써, 다양한 규격의 타이어에 공용으로 사용할 수 있도록 하여 생산성을 향상시킬 수 있도록 하고 확개되는 록킹장치의 진원도를 균일하게 하여 비드부의 불량 율을 감소시킬수 있게 하는 타이어 제조용 비드 록킹(Locking) 장치에 관한 것이다.The present invention relates to a bead locking device for fixing a bead installed in the forming drum in the molding process of the tire, and more particularly as one bead locking device, to be used in common to tires of various specifications to improve productivity The present invention relates to a bead locking device for tire manufacturing, which makes it possible to reduce the defect rate of the bead part by making the roundness of the locking device to be expanded and uniform.

일반적인 타이어의 성형 공정은 먼전 성형 드럼에 인너라이너와 사이드 월을 권회시키고, 인너라이너의 상면에 카카스를 부착시킨다.In general, the tire forming process winds the inner liner and the side wall on the first forming drum, and attaches the carcass to the upper surface of the inner liner.

이어 링형상을 이루는 비드부를 카카스의 양측에 삽입시키고, 드럼의 내측에 설치된 비드 록킹장치를 동작시켜 비드를 고정시킨 상태에서 타이어를 부풀러 사이드 월과 카카스를 접착시키고 이의 상부에 벨트층과 트레드층을 접착시켜 그린 타이어를 성형하게 되는 것이다.Then, the bead portions forming the ring shape are inserted into both sides of the carcass, and the bead locking device installed inside the drum is operated to inflate the tires while inflating the tires, thereby adhering the sidewalls and carcasses, and the belt layer and the upper part thereof. The tread layer is bonded to form a green tire.

첨부된 도면 도 1 및 도 2는 종래에 있어서의 비드 록킹장치를 도시한 정면도와 발췌 단면도이다.1 and 2 are a front view and an excerpt sectional view showing a bead locking device according to the related art.

도 1 및 도 2에 도시되는 바와 같이, 종래에 있어서의 비드 록킹장치는 실린더장치(40)와 연결된 링크(41)에 결합되어 확개동작하는 다수의 세그먼트(50)로 구성되는 것으로 상기 세그먼트(50)의 외측에는 고무커버(51)가 설치된다.As shown in Fig. 1 and Fig. 2, the bead locking device in the prior art is composed of a plurality of segments 50, which are coupled to the link 41 connected to the cylinder device 40, and which are operated to expand. At the outside of the rubber cover 51 is installed.

이와 같은 종래의 비드 록킹장치는 성형 드럼에 인너라이너와 사이드월 및 카카스를 권회시키고, 카카스의 양측에 비드(1)를 삽입시킨 상태에서 실린더장치 (40)를 동작시키게 되면 실린더장치에 연결된 링크(41)가 전진 동작되면서 이에 결합된 다수의 세그먼트(51)를 외측으로 확개시켜 세그먼트(50)의 외측에 설치된 고무커버(51)가 비드(1)내경에 압착되어 비드를 고정시키게 되는 것이다.Such a conventional bead locking device is wound around the inner liner, sidewall and carcass in the forming drum, and when the cylinder device 40 is operated while the bead 1 is inserted into both sides of the carcass, the cylinder device 40 is connected to the cylinder device. As the link 41 moves forward, the plurality of segments 51 coupled to the link 41 are extended to the outside so that the rubber cover 51 installed on the outside of the segment 50 is pressed onto the bead 1 to fix the beads. .

그러나 이와 같은 종래의 비드 록킹장치는 비드(1)를 압착 고정시키는 세그먼트(50)가 다수 개로 분할 되어 있고, 이들이 기구적인 장치에 의하여 확개동작됨으로써, 비드(1)의 내경에 압착되는 정도가 일정하지 못하지 못한 결점이 있다.However, such a conventional bead locking device is divided into a plurality of segments 50 for crimping and fixing the bead 1, and the degree of being compressed to the inner diameter of the bead 1 by a mechanical device is extended. There is a flaw that cannot be done.

세그먼트(5)가 비드(1)에 압착되는 정도가 일정하지 못한 경우 즉, 압착 정도가 약한 경우에는 카카스 및 인너라이너를 부풀리는 동작시 에어가 누출되는 문제점이 발생되고, 압착 정도가 너무 강한 경우에는 비드부에 눌림이 발생되는 문제점이 있는 것이다.When the degree of compression of the segment 5 to the beads 1 is not constant, that is, when the degree of compression is weak, air leaks during the operation of inflating the carcass and the inner liner, and the pressure is too strong. In this case, there is a problem in that the bead is pressed.

또한 종래의 비드 록킹장치는 세그먼트(50)의 팽창경 조정이 불가능하여 다른 규격의 타이어를 성형시키기 위하여는 록킹장치를 교환시켜야만 되어 작업 공정이 복잡하고 생산성이 저하되는 문제점도 있는 것이다.In addition, the conventional bead locking device is not possible to adjust the expansion diameter of the segment 50, so in order to form a tire of a different standard, the locking device has to be replaced, there is also a problem that the work process is complicated and productivity is lowered.

본 발명은 전술한 문제점을 해결하기 위해 안출된 것으로서, 본 발명은 하나의 비드 록킹장치로서 다양한 규격의 타이어를 성형시킬 수 있도록 하고, 비드를 압착하는 압착부의 진원도를 균일하게 하여 불량 율을 감소시킬 수 있도록 하는 타이어 제조용 비드 록킹(Locking)장치를 제공함에 그 목적이 있다.The present invention has been made to solve the above-described problems, the present invention is to be able to form a tire of various specifications as one bead locking device, and to reduce the defective rate by uniformity of the roundness of the crimping portion for pressing the beads It is an object of the present invention to provide a bead locking device for manufacturing tires.

본 발명은 상기와 같은 목적을 달성하기 위해서 다음과 같이 구성된다. 즉, 양측단에 단턱을 이루는 림의 외주연에 공기의 유입에 의하여 팽창 동작되는 블라더를 설치시키되, 상기 블라더의 상면 중앙에 비드가 안착될 수 있게 하는 요홈을 형성시켜 구성되는 것에 특징을 둔 것이다.The present invention is configured as follows to achieve the above object. That is, the bladder is installed on the outer periphery of the rim forming the stepped on both sides of the expansion operation by the inflow of air, but is formed by forming a groove to allow the bead to be seated in the center of the upper surface of the bladder I put it.

제1도는 종래의 비드 록킹장치를 도시한 정면도.1 is a front view showing a conventional bead locking device.

제2도는 종래의 비드 록킹장치를 확대 도시한 발췌 단면도.Figure 2 is an enlarged cross-sectional view showing a conventional bead locking device.

제3도는 본 발명의 비드 록킹장치를 도시한 정면도.3 is a front view showing the bead locking device of the present invention.

제4도는 본 발명의 비드 록킹장치를 확대 도시한 발췌 단면도.Figure 4 is an enlarged cross-sectional view showing the bead locking device of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 비드 2 : 림1: bead 2: rim

3 : 블라더 21 : 단턱3: bladder 21: step

31 : 요홈31: groove

이하에서는 첨부 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부된 도면 도 3은 본 발명의 비드 록킹장치를 도시한 정면도이고, 도 4은 본 발명의 비드 록킹장치를 도시한 발췌 단면도이다.3 is a front view showing the bead locking device of the present invention, Figure 4 is an excerpt cross-sectional view showing the bead locking device of the present invention.

도 3 및 도 4에 도시된 바와 같이, 본 발명은 양측단에 단턱(21)을 이루는 림(1)의 외주연(22)의 공기의 유입과 배출 동작에 의하여 팽창 및 수축 동작을 이루는 블라더(3)를 설치시켜 구성되는 것으로, 상기 블라더(3)의 상면 중앙에 비드 (1)가 안착될 수 있게 하는 요홈(31)을 형성시켜 구성되는 것이다.As shown in Figure 3 and 4, the present invention is the bladder to achieve the expansion and contraction operation by the air inlet and outlet operation of the outer periphery 22 of the rim (1) forming a step (21) at both ends It is configured by installing (3), and is formed by forming a groove 31 for allowing the beads (1) to be seated in the center of the upper surface of the bladder (3).

이와 같이 구성되는 본 발명은 작용 효과를 설명하면 다음과 같다.The present invention configured as described above will be described as follows.

성형 드럼에 인너라이너와 사이드 월을 권회시키고, 인너라이너의 상면에 카카스를 부착시킨 다음 링형상을 이루는 비드부를 카카스의 양측에 삽입시킨다.The inner liner and the side wall are wound on the forming drum, carcass is attached to the upper surface of the inner liner, and the bead portions forming the ring shape are inserted at both sides of the carcass.

이어 드럼의 내측에 설치된 비드 록킹장치의 블라더(3)내로 공기를 유입시키게 되면 블라더가 팽창되면서 비드(1)의 내경을 압착시켜 고정시키게 된다.Subsequently, when air is introduced into the bladder 3 of the bead locking device installed inside the drum, the bladder is expanded to compress and fix the inner diameter of the bead 1.

이와 같이 비드(1)를 고정시킨 상태에서 타이어를 부풀러 사이드 월과 카카스를 접착시키고 이의 상부에 벨트층과 트레드층을 접착시켜 그린 타이어의 성형 작업을 완료한다.In this way, in the state in which the bead 1 is fixed, the tire is inflated to bond the side wall and the carcass, and the belt layer and the tread layer are adhered to the upper part thereof to complete the molding operation of the green tire.

본 발명은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용하는 범위 내에서 다양하게 변형하여 실시할 수가 있다.The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention.

이상에서와 같이 본 발명에 따르면 블라더의 외경을 자유롭게 조정할 수 있어 하나의 비드 록킹장치로 다양한 규격의 타이어를 성형시킬 수 있게 되어 생산성을 향상시킬 수 있게 되며, 비드내경에 압착되는 정도를 용이하게 조정할 수 있어 불량 율을 감소시킬 수 있는 효과와 아울러 종래의 비드 록킹장치에 비하여 비교적 그 구조가 간단하여 제작비용과 유지 보수에 따른 비용을 절감시킬 수 있는 효과가 있는 것이다.As described above, according to the present invention, it is possible to freely adjust the outer diameter of the bladder to form tires of various sizes with one bead locking device, thereby improving productivity, and easily compressing the inner diameter of the bead. It is possible to adjust the effect of reducing the defective rate as well as the structure is relatively simple compared to the conventional bead locking device has the effect of reducing the cost of manufacturing and maintenance.

Claims (1)

양측단에 단턱(21)을 이루는 림(2)의 외주연(22)에 공기의 유입에 의하여 팽창 동작되는 블라더(3)를 설치시켜 구성되는 것으로, 상기 블라더(3)의 상면 중앙에 비드(1)가 안착될 수 있게 하는 요홈(31)을 형성시켜 구성되는 것을 특징으로 하는 타이어 제조용 비드 록킹(Locking)장치.It is configured to install a bladder (3) which is expanded by the inflow of air on the outer periphery (22) of the rim (2) forming the step (21) at both ends, in the center of the upper surface of the bladder (3) Bead locking device for manufacturing a tire, characterized in that formed by forming a groove (31) to allow the bead (1) to be seated.
KR1019970046209A 1997-09-08 1997-09-08 Bead locking device for manufacturing tire KR100258739B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970046209A KR100258739B1 (en) 1997-09-08 1997-09-08 Bead locking device for manufacturing tire

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Application Number Priority Date Filing Date Title
KR1019970046209A KR100258739B1 (en) 1997-09-08 1997-09-08 Bead locking device for manufacturing tire

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KR19990024837A KR19990024837A (en) 1999-04-06
KR100258739B1 true KR100258739B1 (en) 2000-06-15

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4005784A1 (en) * 2020-11-30 2022-06-01 Dongbang Engineering Co., Ltd. Mechanical shoulderless tire building drum

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940009636U (en) * 1992-10-30 1994-05-21 한국타이어제조 주식회사 Bead lock device of tire forming drum

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940009636U (en) * 1992-10-30 1994-05-21 한국타이어제조 주식회사 Bead lock device of tire forming drum

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