KR101708894B1 - Bead lock apparatus of greentire shaping drum machine - Google Patents

Bead lock apparatus of greentire shaping drum machine Download PDF

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Publication number
KR101708894B1
KR101708894B1 KR1020150109299A KR20150109299A KR101708894B1 KR 101708894 B1 KR101708894 B1 KR 101708894B1 KR 1020150109299 A KR1020150109299 A KR 1020150109299A KR 20150109299 A KR20150109299 A KR 20150109299A KR 101708894 B1 KR101708894 B1 KR 101708894B1
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KR
South Korea
Prior art keywords
bead
bead lock
carcass
finger
turn
Prior art date
Application number
KR1020150109299A
Other languages
Korean (ko)
Other versions
KR20170016535A (en
Inventor
황상훈
Original Assignee
한국타이어 주식회사
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Filing date
Publication date
Application filed by 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020150109299A priority Critical patent/KR101708894B1/en
Publication of KR20170016535A publication Critical patent/KR20170016535A/en
Application granted granted Critical
Publication of KR101708894B1 publication Critical patent/KR101708894B1/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
    • B29D30/244—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
    • B29D30/247—Arrangements for the first stage only, e.g. means for radially expanding the drum to lock the beads
    • 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
    • B29D30/32—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

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

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead lock apparatus for a shaping drum apparatus for molding a green tire during heavy-duty green tire molding, and more particularly to a bead lock apparatus for forming bead locks The present invention relates to a bead lock apparatus for a green tire cleaning drum apparatus which is formed so as to reduce a bead crack.
For this purpose, the present invention is characterized in that the bead part (1) completed in the primary case and the secondary case is fixed to the bead lock (2) and the carcass (3) and the side wall (4) A bead lock apparatus for a tire cleaning drum apparatus, wherein a carcass fixing finger (6) is provided between the bead lock (2) and the turnup finger (5), wherein a fixed finger bundle (7) is configured to linearly reciprocate in the axial direction of the shaping drum (9) together with the turn-up finger bundle (8) provided with the turn-up fingers (5).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bead lock apparatus for a green tire cleaning drum,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead lock apparatus for a shaping drum apparatus for molding a green tire during heavy-duty green tire molding, and more particularly to a bead lock apparatus for forming bead locks The present invention relates to a bead lock apparatus for a green tire cleaning drum apparatus which is formed so as to reduce a bead crack.

As is well known, in the molding process in the manufacture of tires, all components used in a tire are sequentially stuck on a molding drum to form a cylindrical green tire.

During molding of the heavy duty green tire during the tire molding operation, the kaka and the sidewall are turned up around the bead in the shaping drum of the molding machine.

3, when the green tire for heavy load is formed in the shaping drum 109, the green tire for the heavy load runs along the periphery of the bead portion 101 which is fixedly secured to the bead lock 102 of the shaping drum 109 The carcass 103 and the sidewall 104 are turned up by turn-up fingers 105 and adhered closely to the bead portion 101.

However, during the turn-up operation of the conventional carcass 103, a shear stress is generated at the turn-up end of the carcass 103 due to the carcass cord wave generated at the turn-up end of the carcass 103.

Generally, in heavy-duty tires, there are various causes of shear stress at the turn-up end of the carcass. However, the shear stress at the turn-up end of the carcass due to the torsional motion of the tire may be the greatest cause. The occurrence of the shear stress at the turn-up end of the carcass due to the described carcass cord wave generation may also be another cause for bead cracks.

Therefore, various techniques for reducing the occurrence of shear stress at the turn-up end of the carcass have been proposed. However, most of them have a structure in which reinforcing means is provided to improve the separation of the carcass turn- As a result, there is a problem that the operation is additionally required.

Patent No. 10-1462899 (November 12, 2014) Registration No. 10-0532623 (Nov. 24, 2005)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method of manufacturing a tire for semi-finished tire, A green tire fixing drum for improving the bead crack due to the reduction of the cord wave phenomenon at the carcass turn-up end portion of the green tire due to the formation of the wave while preventing the wave phenomenon in which the carcass cords are bent at the turn- And it is an object of the present invention to provide a bead lock device of a facility.

In order to accomplish the above object, the present invention provides a bead lock apparatus for a green tire cleaning drum apparatus, which fixes a bead portion completed in a primary case and a secondary case to a bead lock to turn up a carcass and a sidewall with a turn- A carcass fixing finger is provided between the bead lock and the turn-up finger, and the fixed finger bundle provided with the carcass fixing finger is linearly reciprocated in the axial direction of the shaping drum together with the turn-up finger bundle provided with the turn-up finger .

The bead lock device of the green tire cleaning drum apparatus according to the present invention is characterized in that when the carcass and the sidewall are turned up and attached at the bead portion fixedly seated on the bead lock of the cleaning drum for the molding operation of the heavy duty tire, So that the cord wave phenomenon in which the turn-up end of the cage is bent can be reduced, and the cracking of the bead portion of the tire can be reduced.

1 is a partial cross-sectional view of a green tire cleaning drum with a bead lock device according to the present invention,
Figures 2 (A) - (E) illustrate flowcharts of operating states of the present invention,
3 is a partial cross-sectional view showing a part of a conventional green tire cleaning drum.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is needless to say that the technical spirit of the present invention is not limited to the following preferred embodiments, and can be practiced by those skilled in the art.

For example, the first molding drum may be made of a steel carcass, a nylon steel chaffer, a black sidewall, or the like. And the secondary molding drum is manufactured by attaching the first through fourth belts and the tread extruded product to the secondary case.

Then, the primary case and the secondary case are assembled and molded in the cleaning drum 9 to which the present invention is applied.

1, the bead portion 1 finished in the primary case and the secondary case is fixed to the bead lock 2, so that the carcass 3 and the side wall 4 are fixed to the turn-up finger (6) is provided between the bead lock (2) and the turn-up finger (5), and the carcass fastening finger (6) is provided between the bead lock Is provided with a turn-up finger bundle 8 provided with a turn-up finger 5 so as to linearly reciprocate in the axial direction of the shaping drum 9. The turn-

The carcass fixing fingers 6 are adapted to move upward and downward along the inclined side surfaces 10a of the bead lock support 10.

In order to reduce the bead crack of the tire during use of the heavy duty tire, the present invention reduces the wave phenomenon of the carcass cords generated at the end of the carcass 3, which is turned up at the bead portion 1, Device.

The working state of the present invention will be described with reference to Fig.

First, as shown in Fig. 2A, the bead lock 2 of the shaving drum 9 rises in the direction of the arrow and the bead portion 1, which is the semi-finished products of the tire molded in the primary case and the secondary case, And the sidewall 4 are seated and fixed to the bead lock 2.

Then, as shown in Fig. 2 (B), the fixed finger bundle 7 having the carcass fixing finger 6 and the turn-up finger bundle 8 together are moved in the direction of the arrow in the center direction of the shaping drum 9 The carcass fastening fingers 6 are lifted along the inclined side surfaces 10a of the bead lock supports 10 and are lifted along the carcass 3 and the sidewalls 4 about the bead 1. [ Up.

2 (C), the carcass fixing finger 6 holds the end of the carcass 3 in a state of being stopped at the turn-up end of the carcass 3, and the turn- The sidewall 4 rises up from the upper portion of the casting finger 6.

2 (D), when the turn-up finger 5 is returned to the home position while descending, the shaking drum 9 is rotated and the stitcher 11 moves up and down the sidewall 4, At this time, the carcass fastening fingers 6 fix the carcass cords at the ends of the carcass 3.

2 (E), when the stitching operation by the stitcher 11 is finished, as the fixed finger bundle 7 moves backward in the arrow direction, the carcass fixing finger 6 also descends Descends along the inclined side surface 10a of the bead lock support 10 and returns to the original position to be returned to the next tire forming operation.

The bead lock device of the green tire cleaning drum apparatus according to the present invention reduces the cord wave phenomenon in which the carcass cord generated at the carcass turn-up end turned up at the bead portion during the heavy-duty tire forming operation is reduced, It helps strengthen the durability against the cracks.

1: bead portion, 2: bead lock,
3: Carcass, 4: Sidewall,
5: Turn up finger, 6: Carcass fastening finger,
7: fixed finger bundle, 8: turnup finger bundle,
9: Shaping drum, 10: Bead lock support,
11: Stitcher.

Claims (2)

A green tire cleaning drum apparatus in which the bead portion 1 finished in the primary case and the secondary case is fixed to the bead lock 2 and the carcass 3 and the sidewall 4 are turned up by the turn- In the bead lock device of the present invention,
A carcass fixing finger 6 is installed between the bead lock 2 and the turn-up finger 5 and the fixed finger bundle 7 provided with the carcass fixing finger 6 is turned on When the carcass fixing fingers 6 are lifted and lowered along the inclined side face 10a of the bead lock support 10 in a linear reciprocating motion in the axial direction of the shaping drum 9 together with the finger bundle 8 And the bead lock device of the green tire cleaning drum assembly. delete
KR1020150109299A 2015-08-03 2015-08-03 Bead lock apparatus of greentire shaping drum machine KR101708894B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150109299A KR101708894B1 (en) 2015-08-03 2015-08-03 Bead lock apparatus of greentire shaping drum machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150109299A KR101708894B1 (en) 2015-08-03 2015-08-03 Bead lock apparatus of greentire shaping drum machine

Publications (2)

Publication Number Publication Date
KR20170016535A KR20170016535A (en) 2017-02-14
KR101708894B1 true KR101708894B1 (en) 2017-02-22

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Family Applications (1)

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KR1020150109299A KR101708894B1 (en) 2015-08-03 2015-08-03 Bead lock apparatus of greentire shaping drum machine

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102258523B1 (en) * 2020-05-20 2021-06-02 주식회사 동방엔지니어링 Bead lock forward and backward driving device for forming drum

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100532623B1 (en) * 2003-09-19 2005-12-01 한국타이어 주식회사 Building Drum Machine for Greentire
JP2006130748A (en) 2004-11-04 2006-05-25 Bridgestone Corp Tire molding machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100559114B1 (en) * 1997-05-23 2006-03-13 브이엠아이 에페 홀랜드비.브이. Tyre building drum with turn-up apparatus
KR100441959B1 (en) * 2001-12-28 2004-07-27 한국타이어 주식회사 Carcass Building Drum Apparatus for Green Tire
KR101462899B1 (en) 2013-07-26 2014-12-04 한국타이어 주식회사 Shaping drum for green tire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100532623B1 (en) * 2003-09-19 2005-12-01 한국타이어 주식회사 Building Drum Machine for Greentire
JP2006130748A (en) 2004-11-04 2006-05-25 Bridgestone Corp Tire molding machine

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