KR101331080B1 - Belt building drum for tire manufacture - Google Patents

Belt building drum for tire manufacture Download PDF

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Publication number
KR101331080B1
KR101331080B1 KR1020120095802A KR20120095802A KR101331080B1 KR 101331080 B1 KR101331080 B1 KR 101331080B1 KR 1020120095802 A KR1020120095802 A KR 1020120095802A KR 20120095802 A KR20120095802 A KR 20120095802A KR 101331080 B1 KR101331080 B1 KR 101331080B1
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KR
South Korea
Prior art keywords
belt
segments
forming drum
contact
drum
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Application number
KR1020120095802A
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Korean (ko)
Inventor
최병철
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한국타이어 주식회사
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Priority to KR1020120095802A priority Critical patent/KR101331080B1/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
    • B29D30/242—Drums for manufacturing substantially cylindrical tyre components without cores or beads, e.g. treads or belts
    • 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
    • B29D30/30—Applying the layers; Guiding or stretching the layers during application
    • 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
    • B29D2030/2642—Adjusting the diameter of the drum, to match its circumference with the length of ply

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

Abstract

The present invention relates to a belt building drum used for belt building in a tire building process and, more particularly, to a belt building drum for manufacturing tires which improves air remaining in a belt by promoting stitching effects in belt building assembly while improving out of roundness of a belt. The belt building drum for manufacturing tires builds a belt (3) by swallowing and shrinking segments (1) in a radiation direction based on a virtual central axis (2) while the segments are in contact or distanced from each other and winding and compressing the belt. The respective segments comprise trapezoid shaped plates and are arranged in reverse directions from adjacent segments so that hypotenuses can be installed to be in contact. The respective segments are locked with rods (5) which are able to rotate around hinge axis (4).

Description

타이어 제조용 벨트 성형드럼{Belt building drum for tire manufacture}Belt building drum for tire manufacturing

본 발명은 타이어 성형공정에서 벨트 성형시 이용되는 벨트 성형드럼에 관한 것으로, 특히 벨트 성형 조립시 스티칭(Stitching) 효과의 증대로 벨트 내의 에어 잔존을 개선 시키면서 벨트의 진원도 향상이 이루어지는 타이어 제조용 벨트 성형드럼에 관한 것이다.The present invention relates to a belt forming drum used in belt forming in a tire forming process, and in particular, a belt forming drum for improving a roundness of a belt while improving air remaining in the belt due to an increased stitching effect during belt forming assembly. It is about.

타이어 제조시 성형공정은 타이어에 사용되는 모든 재료를 성형기(Building machine)에서 순차적으로 붙여서 원통형의 그린타이어(일명, 생타이어라 함)를 만드는 작업이다.In the manufacturing of tires, a molding process is a process of forming a cylindrical green tire (also called a green tire) by sequentially attaching all materials used in a tire in a building machine.

이와 같은 성형공정에서 벨트 성형드럼에서는 벨트를 와인딩 시키어 압착(Stitching) 시켜주도록 되어 있다.In this molding process, the belt molding drum is configured to wind the belt and to compress the belt.

즉, 도 4에 도시된 벨트 성형드럼(100)에 벨트 케이스(103)를 와인딩 시키어 이 벨트 성형드럼(100)을 방사방향으로 팽창시키도록 되어 있었다.That is, the belt shaping drum 100 is wound on the belt shaping drum 100 shown in FIG. 4 to expand the belt shaping drum 100 in the radial direction.

그러나 종래 벨트 성형드럼(100)은 이 벨트 성형드럼(100)이 팽창되면 각각의 세그먼트(101, Segment)들이 도 5 (F)와 같이 수축된 상태에서 도 5 (E)와 같이 팽창되어지는데, 이때 벨트 성형드럼(100)의 설비 구조상 각각의 세그먼트(101)의 사이가 벌어져 유격(d)이 발생하게 된다.However, in the conventional belt forming drum 100, when the belt forming drum 100 is expanded, each segment 101 (segment) is expanded as shown in FIG. 5 (E) in a contracted state as shown in FIG. At this time, the gap between the segments 101 due to the installation structure of the belt forming drum 100 is generated a gap (d).

이러한 벨트 성형드럼(100)의 팽창에 따라 발생되는 세그먼트(101)의 유격(d)에 의해 벨트 케이스(103)는 이 유격(d)만큼 스티칭 압착 작업시 압착을 제대로 부여받지 못하여 에어가 잔존하거나 벨트의 진원도에 영향을 끼치어 타이어의 균일성(Uniformity) 성능에 악영향으로 작용하였다.Due to the clearance d of the segment 101 generated by the expansion of the belt forming drum 100, the belt case 103 may not be properly compressed in the stitching compression operation by the clearance d, and thus air may remain. It affected the roundness of the belt and adversely affected the uniformity performance of the tire.

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 벨트 성형시 스티칭 효과의 증대로 벨트 내의 에어 잔존을 없애면서 벨트의 진원도 향상을 도모하여 타이어의 균일성 성능을 개선할 수 있는 타이어 제조용 벨트 성형드럼을 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the conventional problems as described above, a tire that can improve the uniformity performance of the tire by improving the roundness of the belt while eliminating the air remaining in the belt by increasing the stitching effect when forming the belt The object is to provide a belt forming drum for manufacturing.

상기와 같은 목적을 달성하기 위한 본 발명은 세그먼트들이 서로 맞닿아 지거나 이격되면서 중심축을 기준으로 방사방향으로 팽창 및 수축하고 팽창된 상태에서 벨트 케이스가 와인딩되어 압착 작업으로 벨트를 성형하는 타이어 제조용 벨트 성형드럼에 있어서, 상기 각각의 세그먼트는 사다리꼴 형태의 판으로 이루어지고, 이웃한 세그먼트와 역방향으로 배치되어 빗면들이 서로 접하여 설치되고, 상기 각각의 세그먼트는 힌지축을 지점으로 회전 가능한 로드가 체결되어 이루어져 있다.In order to achieve the above object, the present invention provides a belt manufacturing belt for forming a belt by compressing a belt case in which the segments are inflated and shrunk in a radial direction with respect to the central axis while the segments are in contact with or spaced apart from each other and the expanded state. In the drum, each of the segments is made of a trapezoidal plate, it is disposed in the opposite direction to the neighboring segments are installed in contact with each other, and each segment consists of a rod that is rotatable around the hinge axis.

이와 같은 본 발명에 따른 타이어 제조용 벨트 성형드럼은 벨트 케이스 성형 조립시 압착효과 증대로 벨트 내의 에어 잔존을 개선할 뿐만 아니라, 벨트 케이스의 진원도 향상으로 타이어에 균일성 성능 기선에도 도움을 준다.Such a belt forming drum for manufacturing a tire according to the present invention not only improves the air remaining in the belt by increasing the compression effect during the belt case molding assembly, but also helps improve the uniformity performance of the tire by improving the roundness of the belt case.

도 1은 본 발명에 따른 타이어 제조용 벨트 성형드럼의 사시도,
도 2 (A)와 (B)는 도 1에서 벨트를 제거한 상태에서 벨트 성형드럼의 팽창상태와 수축상태를 보여주는 도면들로서, (A)는 팽창상태 도면이고, (B)는 수축상태 도면,
도 3 (C)와 (D)는 도 1의 벨트 성형드럼에서 세그먼트(Segment)의 작동상태를 보여주는 도면들로서, (C)는 팽창상태의 세그먼트의 도면이고, (D)는 수축상태의 세그먼트의 도면,
도 4는 종래 타이어 제조용 벨트 성형드럼의 사시도,
도 5 (E)와 (F)는 종래 벨트 성형드럼에서 세그먼트의 작동상태를 보여주는 확대 부분도면들로서, (E)는 팽창상태의 세그먼트 도면이고, (F)는 수축상태의 세그먼트 도면이다.1 is a perspective view of a belt forming drum for manufacturing a tire according to the present invention;
2 (A) and (B) is a view showing an expanded state and a contracted state of the belt forming drum in the state of removing the belt in Figure 1, (A) is an expanded state diagram, (B) is a contraction state diagram,
3 (C) and (D) are views showing the operating state of the segment in the belt forming drum of FIG. 1, (C) is a view of the segment in the expanded state, (D) of the segment in the contracted state drawing,
4 is a perspective view of a belt forming drum for manufacturing a conventional tire,
5 (E) and (F) are enlarged partial views showing an operating state of a segment in a conventional belt forming drum, (E) is a segment view in an expanded state, and (F) is a segment view in a contracted state.

이하, 본 발명의 바람직한 실시예를 첨부도면에 의거 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 타이어 제조용 벨트 성형드럼에 벨트가 장착된 상태를 보여주는 벨트 성형드럼의 사시도이다.1 is a perspective view of a belt forming drum showing a state in which a belt is mounted on a belt forming drum for manufacturing a tire according to the present invention.

본 발명은 도면에 도시된 바와 같이, 세그먼트(1)들이 서로 맞닿아 지거나 이격되면서 가상 중심축(2)을 기준으로 방사방향으로 팽창 및 수축하고 팽창된 상태에서 벨트(3)가 와인딩되어 압착작업으로 벨트(3)를 성형하는 타이어 제조용 벨트 성형드럼에 있어서, 상기 각각의 세그먼트(1)는 사다리꼴 형태의 판으로 이루어지고, 이웃한 세그먼트(1)와 역방향으로 배치되어 빗변(1a)들이 서로 접하여 설치되며, 상기 각각의 세그먼트(1)는 힌지축(4)을 지점으로 회전 가능한 로드(5)와 체결되어 있다.As shown in the figure, the segments 1 are in contact with or spaced apart from each other while expanding and contracting in a radial direction with respect to the virtual central axis 2 and the belt 3 is wound in the expanded state and the compression operation In the belt forming drum for manufacturing tires for forming the belt 3, the segments 1 are each formed of a trapezoidal plate, and are disposed in a direction opposite to the adjacent segments 1 so that the hypotenuses 1a are in contact with each other. Each segment 1 is fastened to a rod 5 rotatable about a hinge axis 4.

여기서 상기 세그먼트(1)들은 가상 중심축(2)에서 힌지축(4)을 매개로 연결된 로드(5)가 장착되어 있는데, 이 로드(5)가 힌지축(4)을 기준으로 도 3의(D)의 화살표 방향으로 회전하게 되면, 상기 세그먼트(1)도 해당 로드(5)를 따라 동일한 방향으로 회동하게 된다.Here, the segments 1 are mounted with rods 5 connected to each other via a hinge axis 4 from the virtual central axis 2, and the rods 5 are connected to the hinge axis 4 of FIG. When rotated in the direction of the arrow of D), the segment 1 is also rotated in the same direction along the rod (5).

이 같이 본 발명에서는 벨트 성형드럼의 외주면을 형성하는 세그먼트(1)들이 사다리꼴 형태의 판으로 이루어지면서 이웃한 세그먼트들과 빗면(1a)들이 맞닿아지면 역방향으로 배치되어 있기에 상기 벨트 성형드럼의 팽창 또는 수축시 상기 세그먼트(1)들 사이의 이격이 발생하지 않도록 되어 있다.Thus, in the present invention, since the segments 1 forming the outer circumferential surface of the belt forming drum are formed in a trapezoidal plate and adjacent segments and the inclined surface 1a are disposed in the opposite direction, the belt forming drum is inflated or expanded. The gap between the segments 1 does not occur during contraction.

즉, 도 2 (A)와 같이 벨트 성형드럼이 팽창되어진 경우에는 도 3 (C)와 같이 각각의 세그먼트(1)들은 해당 로드(5)들이 힌지축(4)을 기준으로 수직방향으로 작용함에 따라, 세그먼트(1)들은 이웃한 세그먼트 빗면(1a)들이 서로 맞닿아 접촉되어 세그먼트(1)들 사이의 이격이 발생하지 않는다.That is, when the belt forming drum is expanded as shown in FIG. 2 (A), as shown in FIG. 3 (C), each of the segments 1 has the rods 5 acting in the vertical direction with respect to the hinge axis 4. Accordingly, the segments 1 are in contact with the adjacent segment oblique surfaces 1a so that there is no separation between the segments 1.

반면에, 도 2 (B)와 같이 벨트 성형드럼이 수축되어진 경우에는 도 3 (D)와 같이 각각의 세그먼트(1)들은 해당 로드(5)들이 도 3 (C)와 같은 상태에서 도 3 (D)의 화살표 방향처럼 힌지축(4)을 지점으로 서로 반대방향으로 벌어지도록 회전함에 따라, 세그먼트(1)들은 이웃한 세그먼트의 빗면(1a)들을 따라 회전 이동되면서 수축됨으로써, 벨트 성형드럼의 수축이 이루어지게 된다.On the other hand, when the belt forming drum is contracted as shown in FIG. 2 (B), each segment 1 as shown in FIG. 3 (D) has the same rod 5 as shown in FIG. 3 (C). As the hinge axis 4 rotates to the point in the opposite direction to each other as in the direction of the arrow of D), the segments 1 are contracted while being rotated along the inclined planes 1a of the neighboring segments, thereby contracting the belt forming drum. This is done.

상기와 같은 본 발명에 따른 타이어 제조용 벨트 성형드럼은 벨트 성형시 벨트를 압축할 때 종래의 벨트 성형드럼에서 야기되는 세그먼트(1)들 사이의 틈새 사이에서 발생할 수 있는 벨트 내 에어 잔존과 같은 문제점과 성형되는 벨트의 진원도 문제점을 개선시킬 수 있도록 되어 있다.The belt forming drum for manufacturing a tire according to the present invention as described above has problems such as air residual in the belt which may occur between the gaps between the segments 1 caused in the conventional belt forming drum when the belt is compressed during belt forming. The roundness of the belt to be molded can be improved to improve the problem.

1 : 세그먼트(Segment), 1a : 빗변,
2 : 중심축, 3 : 벨트,
4 : 힌지축, 5 : 로드(Rod).1: Segment, 1a: hypotenuse,
2: central axis, 3: belt,
4: Hinge Shaft, 5: Rod.

Claims (2)

세그먼트(1)들이 서로 맞닿아 지거나 이격되면서 가상 중심축(2)을 기준으로 방사방향으로 팽창 및 수축하고 팽창된 상태에서 벨트(3)가 와인딩되어 압착작업으로 벨트(3)를 성형하는 타이어 제조용 벨트 성형드럼에 있어서,
상기 각각의 세그먼트(1)는 사다리꼴 형태의 판으로 이루어지고, 이웃한 세그먼트(1)와 역방향으로 배치되어 빗변(1a)들이 서로 접하여 설치되며, 상기 각각의 세그먼트(1)는 힌지축(4)을 지점으로 회전 가능한 로드(5)와 체결되어 이루어진 것을 특징으로 하는 타이어 제조용 벨트 성형드럼.For manufacturing tires, in which the segments 1 are in contact with or spaced apart from each other and expand and contract radially about the virtual central axis 2 and the belt 3 is wound in an expanded state to form the belt 3 by pressing. In belt forming drum,
Each of the segments 1 is made of a trapezoidal plate, and is disposed in a direction opposite to the adjacent segments 1 so that the hypotenuses 1a are installed in contact with each other, and each of the segments 1 has a hinge shaft 4. Belt forming drum for tire production, characterized in that it is fastened to the rotatable rod (5) to the point. 제 1항에 있어서,
상기 세그먼트(1)들은 해당 힌지축(4)을 지점으로 빗면(1a)을 따라 서로 반대 방향으로 회전하도록 이루어진 것을 특징으로 하는 타이어 제조용 벨트 성형드럼.The method of claim 1,
Belt segment forming drum for tires, characterized in that the segments (1) are made to rotate in opposite directions along the inclined surface (1a) to the hinge axis (4) to the point.
KR1020120095802A 2012-08-30 2012-08-30 Belt building drum for tire manufacture KR101331080B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04232732A (en) * 1990-07-07 1992-08-21 Continental Ag Manufacture of belt bucket for vehicle pneumatic tire
JP2007136935A (en) 2005-11-21 2007-06-07 Bridgestone Corp Rigid body segment for tire molding drum and tire molding drum using it
JP4643709B2 (en) * 2006-05-19 2011-03-02 東洋ゴム工業株式会社 Band removal method and band molding drum for band molding drum

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04232732A (en) * 1990-07-07 1992-08-21 Continental Ag Manufacture of belt bucket for vehicle pneumatic tire
JP2007136935A (en) 2005-11-21 2007-06-07 Bridgestone Corp Rigid body segment for tire molding drum and tire molding drum using it
JP4643709B2 (en) * 2006-05-19 2011-03-02 東洋ゴム工業株式会社 Band removal method and band molding drum for band molding drum

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