KR920009952B1 - Forming method for bead preformed articles of tire - Google Patents

Forming method for bead preformed articles of tire Download PDF

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Publication number
KR920009952B1
KR920009952B1 KR1019900013898A KR900013898A KR920009952B1 KR 920009952 B1 KR920009952 B1 KR 920009952B1 KR 1019900013898 A KR1019900013898 A KR 1019900013898A KR 900013898 A KR900013898 A KR 900013898A KR 920009952 B1 KR920009952 B1 KR 920009952B1
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KR
South Korea
Prior art keywords
bead
wire
clamp
winding
tire
Prior art date
Application number
KR1019900013898A
Other languages
Korean (ko)
Other versions
KR920006101A (en
Inventor
김경수
오세철
박성수
Original Assignee
주식회사 금호
박삼구
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1019900013898A priority Critical patent/KR920009952B1/en
Publication of KR920006101A publication Critical patent/KR920006101A/en
Application granted granted Critical
Publication of KR920009952B1 publication Critical patent/KR920009952B1/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
    • 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
    • B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
    • B29D30/18—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)
    • B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Method for manufacturing beads for automobile tire comprises (1) winding a circular wire to give a hexagonal cross-sectional configuration, (2) installing T-type clamp composed of flat member and vertical member on the upper surface of the wound wire, (3) forming bead by winding over again arround the wound wire in which the clamp is installed, and (4) attaching apex onto the bead by using injection molding. The semifinished bead product is used for reinforcing the strength of tire.

Description

승용차 타이어의 비드 반제품의 제조방법Manufacturing method of semi-finished bead of passenger car tire

제1도는 종래의 타이어 비드부 단면도.1 is a cross-sectional view of a conventional tire bead portion.

제2a도, 제2b도는 종래의 비드 반제품의 단면약도 및 앤드포인트부의 사시도.2A and 2B are cross-sectional schematics and perspective views of an end point of a conventional bead semifinished product.

제3도는 본 발명에 따른 다양한 육각형 비드의 단면도.3 is a cross-sectional view of various hexagonal beads according to the present invention.

제4도는 본 발명에 따른 비드에 삽입되는 클램프의 사시도.4 is a perspective view of a clamp inserted into a bead according to the present invention.

제5도는 본 발명에 따른 비드에 클램프의 삽입상태를 나타내는 단면약도.Figure 5 is a cross-sectional view showing the insertion state of the clamp in the bead according to the present invention.

제6도는 본 발명에 따른 비드에 에어팩스를 부착하는 상태를 나타내는 사출몰드의 단면도.6 is a cross-sectional view of an injection mold showing a state in which an air fax is attached to beads according to the present invention.

제7도는 본 발명에 따른 완성된 비드 반제품의 단면도.7 is a cross-sectional view of the finished bead semifinished product according to the present invention.

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

1 : 비드(bead) 2 : 에이팩스(Apex)1: bead 2: Apex

3 : 플리퍼(flipper) 4 : 카커스(carcass)3: flipper 4: carcass

5 : 내측라이너(liner) 6 : 원형와이어5: inner liner 6: round wire

7 : 클램프 8 : 평면부재7 clamp 8 flat member

9 : 수직부재 10 : 사출몰드 상형9: vertical member 10: injection mold upper mold

11 : 사출몰드 하형11: injection mold lower mold

본 발명은 승용차 타이어에 관한 것으로, 더욱 상세하게는, 승용차 타이어의 강도 보강을 위해 사용되는 비드 반제품의 제조방법에 관한 것이다.The present invention relates to a passenger car tire, and more particularly, to a method for producing a bead semi-finished product used for reinforcing strength of a passenger car tire.

공기압 타이어의 강도 보강을 위해 내측의 라이너, 카커스 사이에 끼워지는 비드 반제품은, 종래에는 그 제조에 있어서, 제1도와 제2a도에 도시된 바와 같이, 원형의 와이어(6)를 와인딩 드럼을 이용하여 [선×회]로 와인딩하여 비드(1)를 형성하고, 이런 [선×회] 비드상에 에이팩스(2)(Apex)를 접착하고, 이들을 플리퍼(3)(fLipper)로 감쌓아 제조되고 있다.Bead semi-finished products sandwiched between the inner liner and the carcass to reinforce the strength of the pneumatic tire are conventionally manufactured by winding the winding wire 6 of the winding drum as shown in FIGS. 1 and 2a. Winding by using [line x times] to form beads 1, and attaching Apex 2 (Apex) on these [line x times] beads, and wrapping them with a flipper 3 (fLipper) Is being manufactured.

여기서 우선 [선×회]비드라는 용어를 설명하면 제2a도에 도시된 바와 같이, 예를들어 [5×5 ] 비드의 경우 5개의 원형스틸 와이어를 일렬로 하여 이를 5회 감는 것을 의미한다.Here, the term [line × times] bead will be described first as shown in FIG. 2A, for example, in the case of [5 × 5] beads, five round steel wires are lined up in a row.

이러한 종래의 비드 반제품의 제조방법은, 비드(1)의 와인딩 단면이, 제2a도와 같이, 4각형으로 형성되어 카커스(4)로 감쌀때, 비드(1)의 4각 모서리에 응력이 집중되어 변형을 초래하고, [선×회]비드(1)에 에이팩스(2)를 부착할때에 엔드포인트부에 공기가 들어가게 되며, [선×회]비드(1)상에 에이팩스(2)를 직접 부착하므로 비드와 에이팩스의 결합이 강력하지 못하여, 이들을 플리퍼(3)로 감싸는 공정이 요구된다는 단점이 있다.In the conventional method for manufacturing a bead semifinished product, when the winding cross section of the bead 1 is formed into a quadrangular shape and wrapped in the carcass 4, as shown in FIG. 2A, stress is concentrated at the four corners of the bead 1. To cause deformation, and when the apex (2) is attached to the [line x turn] beads (1), air enters the endpoint portion, and the apex (2) is placed on the [line x turn] beads (1). ) Directly attaches the beads and the apex is not strong, there is a disadvantage that the process of wrapping them with the flipper (3) is required.

그러므로, 본 발명의 목적은, 비드의 모서리부의 변형을 감소시키고, 엔드포인트부로의 공기인입을 감소시키는 한편 플리퍼 부착공정을 생략할 수 있는, 승용차 타이어의 비드 반제품의 제조방법을 제공하려는 것이다.It is therefore an object of the present invention to provide a method for producing bead semifinished products of a passenger car tire, which can reduce the deformation of the edges of the beads, reduce the air entry into the endpoints, and omit the flipper attachment process.

본 발명에 따른, 승용차 타이어의 비드 반제품의 제조방법은, 하나의 원형 와이어를 그 와인딩 단면이 6각형이 되도록 소정 횟수로 와인딩하고, 평면부재와 상기 부재상에 일체로 형성된 T형의 수직부재를 포함하는 클램프를 상기 소정횟수로 와인딩된 와이어의 윗면에 상기 클램프의 평면부재를 장착하고, 상기 클램프바 장착된 상태에서 상기 수직부재가 와이어 사이로 돌출되는 한편, 그 와인딩 단면이 계속 6각형을 이르는 형상으로, 상기 와이어를 소정횟수 더 와인딩하여 비드를 형성한 후, 상기 비드의 상기 수직부재가 돌출된 측에 에이팩스를 사출몰드에 의해서 부착하는 단계를 포함한다.According to the present invention, a method for manufacturing a bead semi-finished product of a passenger car tire, winding a single circular wire a predetermined number of times so that the winding cross-section is hexagonal, and the T-shaped vertical member integrally formed on the flat member and the member Mounting a clamp comprising a flat member of the clamp on the upper surface of the wire wound by the predetermined number of times, the vertical member protrudes between the wire while the clamp bar is mounted, while the winding cross-section continues to form a hexagon In addition, after winding the wire further a predetermined number of times to form a bead, the step of attaching an afax by injection molding on the side of the vertical member of the bead protruding.

이하, 본 발명을 첨부도면에 관련하여 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제3도에 도시된 바와 같이, 하나의 와이어(6)를 와인딩 드럼을 이용하여 소정횟수로 와인딩하면 와인딩된 단면이 희망하는 다양한 형상의 6각형을 형성하게 되며, 상기 와이어의 마지막회의 와인딩 전에, 제4a도와 제4b도에 도시된 바와 같은 직사각형 평면부재(8)와 상기 부재(8)에 일체로 형성된 “T”형의 수직부재(9)로 이루어진 클램프(7)를, 삽입하여, 제3도에 도시된 바와 같이, 상기 와이어의 마지막회의 와인딩에 의해 상기 수직부재(9)가 돌출된 비드(1)가 형성된다.As shown in FIG. 3, when one wire 6 is wound by a predetermined number of times using a winding drum, a wound cross section forms a hexagon of various shapes, and before winding the last time of the wire, A clamp 7 consisting of a rectangular planar member 8 as shown in FIGS. 4A and 4B and a vertical member 9 of “T” type integrally formed in the member 8 is inserted, and a third As shown in the figure, the bead 1 from which the vertical member 9 protrudes is formed by the last winding of the wire.

상기 클램프(7)는, 바람직하게는, 고무와의 접착성을 위해 황동도금한 스릴박판으로 형성되고, 상기 클램프(7)의 수직부재(9)의 높이는 비드(7)와 에이팩스(2)의 결합성을 위해 상기 원형 와이어(6)의 반경의 3배 내지 5배가 바람직하다.The clamp 7 is preferably formed of a thrilled thin plate plated with brass for adhesion to rubber, and the height of the vertical member 9 of the clamp 7 is a bead 7 and an afax 2. 3 to 5 times the radius of the circular wire 6 is preferred for bonding.

제5도에서는, 4개의 클램프(7)가 등각도로 배치되어 있으나, 비드(1)와 에이팩스(2)와의 결합력은 사용되는 클램프의 수가 많을수록 강해질 것이다.In FIG. 5, although four clamps 7 are arranged at an isometric angle, the coupling force between the beads 1 and the afax 2 will be stronger as the number of clamps used is increased.

상기 비드(1)에, 제6도에 도시된 바와 같이, 통상의 사출몰드의 상형(10)과 하형(11)을 이용하여 에이팩스(2)를 부착성형하여, 제7a도와 제7b도와 같은 비드 반제품이 완성된다.As shown in FIG. 6, the apex 2 is attached to the bead 1 using the upper mold 10 and the lower mold 11 of a conventional injection mold, and the same as in FIGS. 7a and 7b. Bead semi-finished product is completed.

본 발명에 다른, 상기 하니의 와이어에 의한 비드는 그 단면이 6각형이므로 비드 반제품에 카커스를 감쌀때에 집중되는 응력을 6면으로 분산하여 수용하므로 종래의 4각형의 비드보다 그 변형이 감소되며, 하나의 와이어를 와인딩하여 비드를 형성하므로 앤드포인트부에 의한 공기인입이 감소되고, 비드와 에이팩스간에 클램프를 삽입함으로써 비드와 에이팩스간의 결합력이 증대되어 플리퍼의 부착을 생략할 수 있다.According to the present invention, since the bead by the wire of the honeysuckle is hexagonal in cross section, the stress concentrated when wrapping the carcass in the bead semi-finished product is dispersed and accommodated in six sides, so that its deformation is reduced compared to the conventional quadrangular bead. Since the wire is wound to form a bead, the air intake by the end portion is reduced, and a clamping force between the bead and the ax is increased by inserting a clamp between the bead and the afax, so that the attachment of the flipper can be omitted.

Claims (1)

원형의 와이어로 비드를 형성한 후 에이팩스를 부착하는 승용차 타이어의 비드 반제품의 제조방법에 있어서, 하나의 원형 와이어를 그 와인딩 단면이 6각형이 되도록 소정횟수로 와인딩하고, 평면부재와 상기 부재상에 일체로 형성된 T형의 수직부재를 포함하는 클램프를 상기 소정횟수로 와인딩된 와이어의 윗면에 상기 클램프의 평면부재를 장착하고, 상기 클램프가 장착된 상태에서 상기 수직부재가 와이어사이로 돌출되는 한편 그 와인딩 단면이 계속 6각형을 이루는 형상으로, 상기 와이어를 소정횟수 더 와인딩하여 비드를 형성하고, 상기 비드의 수직부재가 돌출된 측에 에이팩스를 사출몰드에 의해 부착하는, 단계를 포함하는 승용차 타이어의 비드 반제품 제조방법.In the bead semi-finished product manufacturing method of a passenger car tire which attaches an afax after forming a bead with a circular wire, the one round wire is wound by a predetermined number of times so that the winding cross section becomes a hexagon, A clamp comprising a T-shaped vertical member integrally formed in the clamp is mounted on the upper surface of the wire wound the predetermined number of times, and the vertical member protrudes between the wires while the clamp is mounted. Passenger car tires comprising the step of winding the wire further a predetermined number of times to form a bead in a shape in which the winding cross-section continues, and attaching an apex to the side from which the vertical member of the bead is protruded by an injection mold. Bead semi-finished product manufacturing method.
KR1019900013898A 1990-09-04 1990-09-04 Forming method for bead preformed articles of tire KR920009952B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900013898A KR920009952B1 (en) 1990-09-04 1990-09-04 Forming method for bead preformed articles of tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900013898A KR920009952B1 (en) 1990-09-04 1990-09-04 Forming method for bead preformed articles of tire

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KR920006101A KR920006101A (en) 1992-04-27
KR920009952B1 true KR920009952B1 (en) 1992-11-06

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101069077B1 (en) * 2010-02-19 2011-09-29 금호타이어 주식회사 Pneumatic tire with preassembly single semifinished product
KR102065637B1 (en) 2018-09-04 2020-01-13 금호타이어 주식회사 Bead former apparatus and bead forming method using the same
CN110091461A (en) * 2019-05-28 2019-08-06 天津恒泰善驰科技有限公司 A kind of triangle rubber injection molding apparatus

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