JP2020069775A - Multi-layer rubber member manufacturing apparatus and multi-layer rubber member manufacturing method - Google Patents

Multi-layer rubber member manufacturing apparatus and multi-layer rubber member manufacturing method Download PDF

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JP2020069775A
JP2020069775A JP2018207563A JP2018207563A JP2020069775A JP 2020069775 A JP2020069775 A JP 2020069775A JP 2018207563 A JP2018207563 A JP 2018207563A JP 2018207563 A JP2018207563 A JP 2018207563A JP 2020069775 A JP2020069775 A JP 2020069775A
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rubber
conveyor
multilayer
rubber member
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JP7192406B2 (en
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武 中戸川
Takeshi Nakatogawa
武 中戸川
博幸 鬼松
Hiroyuki Onimatsu
博幸 鬼松
薫 久保田
Kaoru Kubota
薫 久保田
昇 石原
Noboru Ishihara
昇 石原
拓磨 小西
Takuma Konishi
拓磨 小西
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Sumitomo Rubber Industries Ltd
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Abstract

To provide a multi-layer rubber member manufacturing apparatus and a multi-layer rubber member manufacturing method whereby, change of a cross-sectional shape, size, ratio of rubber regions or the like of the multi-layer rubber member is easily performed only by change of a die plate of each rubber extruder, thereby achieving reduction of equipment cost and improvement of productivity.SOLUTION: There is provided a multi-layer rubber member manufacturing apparatus that forms a multi-layer rubber member G0 in which a cross section thereof is divided into a first rubber region Y1, a second rubber region Y2, and a third rubber region Y3. The manufacturing apparatus comprises first to third conveyors 5 to 7 for respectively conveying first to third rubber bodies G1 to G3 from the first to third rubber extruders 2 to 4. The second conveyor 6 has a downstream end E2L that is interrupted above the first conveyor 5, and a two-layered rubber QA is formed by stacking the second rubber body G2 to be sent from the downstream end E2L on the first rubber body G1 of the first conveyor 5. The third conveyor 7 stacks the third rubber body G3 on the two-layered rubber QA to form the multi-layer rubber member Q0.SELECTED DRAWING: Figure 2

Description

本発明は、タイヤのビードエーペックスゴムの製造に好適であり、断面が3つのゴム領域に区分された多層ゴム部材を構成簡易に製造しうる多層ゴム部材の製造装置、及び製造方法に関する。   The present invention relates to a manufacturing apparatus and a manufacturing method of a multilayer rubber member, which is suitable for manufacturing a bead apex rubber of a tire and can easily manufacture a multilayer rubber member having a cross section divided into three rubber regions.

図10に示すように、重荷重用タイヤのビードエーペックスゴムaとして、硬質のゴムからなる半径方向内側のゴム領域a1と、軟質のゴムからなる半径方向外側のゴム領域a2と、このゴム領域a2のタイヤ軸方向の外面に隣接されるシート状のゴム領域a3とに区分された多層構造のゴムが使用される(例えば特許文献1参照)。   As shown in FIG. 10, as a bead apex rubber a of a heavy-duty tire, a radially inner rubber region a1 made of hard rubber, a radially outer rubber region a2 made of soft rubber, and a rubber region a2 A rubber having a multilayer structure divided into a sheet-shaped rubber region a3 adjacent to the outer surface in the tire axial direction is used (for example, refer to Patent Document 1).

この多層構造のビードエーペックスゴムaは、従来、3層ゴム押出装置によって押出し成形される。3層ゴム押出装置は、3つのゴム押出機の各前端部が取り付く押出しヘッドを具え、この押出しヘッドには、プリフォーマとダイプレートとが取り付く。プリフォーマは予成形流路を有し、各ゴム押出機から別々に押し出されるゴムを、それぞれ予成形しかつ所定の配分(ゴム領域a1〜a3の面積比に応じた配分)にて合流させる。又ダイプレートは成形口を具え、前記予成形された合流ゴムを、最終の断面形状に押し出し成形する。   This bead apex rubber a having a multilayer structure is conventionally extruded by a three-layer rubber extruding device. The three-layer rubber extruder comprises an extrusion head to which the front ends of the three rubber extruders are attached, to which preformer and die plate are attached. The preformer has a preforming channel, and preforms the rubber extruded separately from each rubber extruder and joins them in a predetermined distribution (distribution according to the area ratio of the rubber regions a1 to a3). Further, the die plate has a molding port, and the preformed combined rubber is extruded into a final sectional shape.

他方、ビードエーペックスゴムaでは、タイヤのサイズや種類に応じて、その断面形状、サイズ、ゴム領域a1〜a3の比率等が相違する。しかし、3層ゴム押出装置において、前記断面形状、サイズ、ゴム領域a1〜a3の比率等を変更する場合、それに応じてプリフォーマ及びダイプレートを変更し交換する必要が有り、設備コストの増加や交換作業に伴う生産性の低下を招く。特に、プリフォーマは、構造が複雑かつ交換作業に時間を要するため、上記の問題点の主原因となる。   On the other hand, in the bead apex rubber a, the cross-sectional shape, the size, the ratio of the rubber regions a1 to a3, and the like differ depending on the size and type of the tire. However, in the three-layer rubber extrusion device, when the cross-sectional shape, size, ratio of the rubber regions a1 to a3, etc. are changed, it is necessary to change and replace the preformer and die plate accordingly, which increases equipment cost and Productivity is reduced due to replacement work. In particular, the preformer has a complicated structure and requires a long time for replacement work, and thus is a main cause of the above problems.

特開2008−37367号公報JP, 2008-37367, A

本発明は、特にタイヤのビードエーペックスゴムの製造に好適に採用でき、多層ゴム部材の断面形状、サイズ、ゴム領域の比率等の変更を、各ゴム押出し機のダイプレートの変更のみで容易に行うことができ、設備コストの低減や生産性の向上に貢献しうる多層ゴム部材の製造装置、及び製造方法を提供することを課題としている。   INDUSTRIAL APPLICABILITY The present invention can be particularly suitably applied to the production of bead apex rubber for tires, and easily changes the cross-sectional shape, size, ratio of rubber regions, etc. of a multilayer rubber member only by changing the die plate of each rubber extruder. It is an object of the present invention to provide a manufacturing apparatus and a manufacturing method of a multi-layer rubber member that can contribute to reduction of equipment cost and improvement of productivity.

本願の第1の発明は、長さ方向と直角な断面が、第1ゴムからなる第1ゴム領域と、第2ゴムからなる第2ゴム領域と、第3ゴムからなる第3ゴム領域とに区分された長尺の多層ゴム部材の製造装置であって、
第1のゴム押出し機と、
第2のゴム押出し機と、
第3のゴム押出し機と、
前記第1のゴム押出し機から押し出される第1ゴム体を搬送する第1搬送コンベヤと、
前記第1搬送コンベヤの上方を通り、かつ前記第2のゴム押出し機から押し出される第2ゴム体を、前記第1ゴム体と同方向に搬送する第2搬送コンベヤと、
前記第3のゴム押出し機から押し出される第3ゴム体を搬送する第3搬送コンベヤとを具え、
前記第2搬送コンベヤは、その搬送方向の下流側端部が前記第1搬送コンベヤの搬送面の上方で途切れ、前記下流側端部から送り出される第2ゴム体を、前記第1搬送コンベヤの第1ゴム体上に第1の合流位置で重ね合わせて2層ゴムを形成し、
前記第3搬送コンベヤは、前記第3ゴム体を、前記2層ゴム上に第2の合流位置で重ね合わせて多層ゴム部材を形成する。
A first invention of the present application is such that a cross section perpendicular to a length direction has a first rubber region made of a first rubber, a second rubber region made of a second rubber, and a third rubber region made of a third rubber. A manufacturing apparatus for a long-divided multi-layered rubber member,
A first rubber extruder,
A second rubber extruder,
A third rubber extruder,
A first conveyor that conveys a first rubber body extruded from the first rubber extruder,
A second conveyor that conveys a second rubber body that passes above the first conveyor and is extruded from the second rubber extruder in the same direction as the first rubber body;
A third conveyor that conveys a third rubber body extruded from the third rubber extruder,
The second transport conveyor has a downstream end in the transport direction that is interrupted above the transport surface of the first transport conveyor, and a second rubber body fed from the downstream end is transferred to the first transport conveyor. One rubber body is superposed at the first joining position to form a two-layer rubber,
The third conveyor conveys the third rubber body on the second-layer rubber at a second joining position to form a multi-layer rubber member.

本発明に係る多層ゴム部材の製造装置では、前記第1の合流位置より下流側に、前記2層ゴムの第1ゴム体と第2ゴム体とを圧接させる第1の圧接手段を具えるのが好ましい。   The apparatus for manufacturing a multilayer rubber member according to the present invention comprises a first press-contact means for press-contacting the first rubber body and the second rubber body of the two-layer rubber on the downstream side of the first joining position. Is preferred.

本発明に係る多層ゴム部材の製造装置では、前記第2の合流位置より下流側に、前記多層ゴム部材の第3ゴム体と2層ゴムとを圧接させる第2の圧接手段を具えるのが好ましい。   In the manufacturing apparatus for a multilayer rubber member according to the present invention, a second press-contact means for press-contacting the third rubber body of the multilayer rubber member and the two-layer rubber is provided downstream of the second joining position. preferable.

本発明に係る多層ゴム部材の製造装置では、前記第1、第2、第3のゴム押出し機は、それぞれ前端部にギアポンプを具えるのが好ましい。   In the multilayer rubber member manufacturing apparatus according to the present invention, it is preferable that the first, second and third rubber extruders each include a gear pump at a front end portion thereof.

本発明に係る多層ゴム部材の製造装置では、前記第1搬送コンベヤの搬送速度に応じて、前記第1のゴム押出し機のゴム押出し速度を変化させ、かつ前記第2搬送コンベヤの搬送速度に応じて、前記第2のゴム押出し機のゴム押出速度を変化させる速度制御手段を具えるのが好ましい。   In the manufacturing apparatus for a multilayer rubber member according to the present invention, the rubber extrusion speed of the first rubber extruder is changed according to the transfer speed of the first transfer conveyor, and the transfer speed of the second transfer conveyor is changed. Therefore, it is preferable to provide a speed control means for changing the rubber extrusion speed of the second rubber extruder.

本発明に係る多層ゴム部材の製造装置では、前記多層ゴム部材は、タイヤの環状ビードコアの外周面に貼り着されるビードエーペックスゴム用であるのが好ましい。   In the manufacturing apparatus for a multilayer rubber member according to the present invention, it is preferable that the multilayer rubber member is for bead apex rubber adhered to the outer peripheral surface of the annular bead core of the tire.

本発明に係る多層ゴム部材の製造装置では、前記多層ゴム部材を、所定長さで切断して順次ビードエーペックスゴムを得るための切断手段を含むのが好ましい。   In the apparatus for manufacturing a multilayer rubber member according to the present invention, it is preferable that the multilayer rubber member includes cutting means for cutting the multilayer rubber member in a predetermined length to sequentially obtain a bead apex rubber.

本発明に係る多層ゴム部材の製造装置では、前記切断手段と前記第1搬送コンベヤとの間に、前記多層ゴム部材を一時的に貯留するフェスツーン部が配されるのが好ましい。   In the apparatus for manufacturing a multilayer rubber member according to the present invention, it is preferable that a festoon portion for temporarily storing the multilayer rubber member is arranged between the cutting means and the first conveyor.

本発明に係る多層ゴム部材の製造装置では、前記切断手段は、前記ビードエーペックスゴムの周方向に延びる第1側部が、周方向に延びる第2側部よりも長くなるように多層ゴム部材を切断し、
前記ビードエーペックスゴムの各々の第2側部は、ビードコアの半径方向外側の表面上に配置されるのが好ましい。
In the manufacturing apparatus for a multilayer rubber member according to the present invention, the cutting means is configured to cut the multilayer rubber member such that a first side portion of the bead apex rubber extending in the circumferential direction is longer than a second side portion extending in the circumferential direction. Disconnect,
The second side of each of the bead apex rubbers is preferably located on the radially outer surface of the bead core.

本発明に係る多層ゴム部材の製造装置では、前記切断手段は、隣接するビードエーペックスゴムの間から独立した三角形または台形の部分を切断するように多層ゴム部材を切断するのが好ましい。   In the multi-layer rubber member manufacturing apparatus according to the present invention, it is preferable that the cutting means cut the multi-layer rubber member so as to cut an independent triangular or trapezoidal portion from between adjacent bead apex rubbers.

本願の第2の発明は多層ゴム部材の製造方法であって、第1の発明の多層ゴム部材の製造装置を用い、長さ方向と直角な断面が、第1ゴムからなる第1ゴム領域と、第2ゴムからなる第2ゴム領域と、第3ゴムからなる第3ゴム領域とに区分された長尺の多層ゴム部材を製造する。   A second invention of the present application is a method for manufacturing a multi-layer rubber member, wherein the cross-section perpendicular to the longitudinal direction is a first rubber region made of the first rubber, using the multi-layer rubber member manufacturing apparatus of the first invention. A long multi-layered rubber member divided into a second rubber region made of the second rubber and a third rubber region made of the third rubber is manufactured.

本発明の多層ゴム部材の製造装置では、従来の3層ゴム押出装置におけるプリフォーマの役割を、第1搬送コンベヤ、第2搬送コンベヤ、及び第3搬送コンベヤに分担させている。そして、第2搬送コンベヤから送り出される第2ゴム体を、第1搬送コンベヤによって搬送される第1ゴム体上に、重ね合わせて合流させ2層ゴムを形成している。又第3搬送コンベヤから送り出される第3ゴム体を、前記2層ゴム上に重ね合わせて合流させ多層ゴム部材を形成している。   In the manufacturing apparatus for a multilayer rubber member of the present invention, the role of the preformer in the conventional three-layer rubber extrusion apparatus is shared by the first conveyor, the second conveyor, and the third conveyor. Then, the second rubber body sent out from the second conveyor is superposed on and merged with the first rubber body conveyed by the first conveyor to form a two-layer rubber. Further, the third rubber body sent out from the third conveyor is superposed on the two-layer rubber and merged to form a multi-layer rubber member.

従って、多層ゴム部材の断面形状、サイズ、ゴム領域の比率等を変更する場合、第1〜第3のゴム押出し機のダイプレートのみ変更し、第1ゴム体〜第3ゴム体の断面形状、サイズ等を変更することで対応しうる。即ち、従来のプリフォーマが不要となり、それに伴う設備コストの増加や生産性の低下を抑制することができる。なおダイプレートの種類数は増加するものの、ダイプレートは構造簡易、かつ小型であるため、設備コストや生産性への影響は、プリフォーマに比して小である。   Therefore, when changing the cross-sectional shape, size, ratio of rubber regions, etc. of the multilayer rubber member, only the die plates of the first to third rubber extruders are changed to change the cross-sectional shapes of the first rubber body to the third rubber body, This can be handled by changing the size, etc. That is, the conventional preformer becomes unnecessary, and it is possible to suppress an increase in equipment cost and a decrease in productivity accompanying it. Although the number of types of die plates increases, the die plates have a simple structure and are small in size, so that the influence on the equipment cost and the productivity is smaller than that of the preformer.

本発明の多層ゴム部材の製造装置の一実施例を概念的に示す側面図である。It is a side view which shows notionally one Example of the manufacturing apparatus of the multilayer rubber member of this invention. その主要部を拡大して示す側面図である。It is a side view which expands and shows the main part. 第1ゴム体と第2ゴム体との合流前後を示す斜視図である。It is a perspective view showing before and after a 1st rubber body and a 2nd rubber body merge. 第1ゴム体と第2ゴム体との合流を説明する断面図である。It is sectional drawing explaining the merging of a 1st rubber body and a 2nd rubber body. 第3ゴム体と2層ゴムとの合流前後を示す斜視図である。It is a perspective view which shows the 3rd rubber body and two-layer rubber before and after joining. (a)、(b)は、第1、第2の圧接手段を概念的に示す断面図である。(A), (b) is sectional drawing which shows the 1st and 2nd press contact means notionally. 多層ゴム部材のビードコアへの貼り付けを示す平面図である。It is a top view showing pasting to a bead core of a multilayer rubber member. (a)、(b)は、切断手段を概念的に示す断面図である。(A), (b) is sectional drawing which shows a cutting means notionally. 多層ゴム部材の一実施例を概念的に示す断面図である。It is sectional drawing which shows notionally one Example of a multilayer rubber member. タイヤのビードエーペックスゴムを示す断面図である。It is sectional drawing which shows the bead apex rubber of a tire.

以下、本発明の実施の形態について、詳細に説明する。
図1に示すように、本実施形態の多層ゴム部材の製造装置1(単に「製造装置1」という場合がある。)は、第1のゴム押出し機2と、第2のゴム押出し機3と、第3のゴム押出し機4(図5に示す)と、第1搬送コンベヤ5と、第2搬送コンベヤ6と、第3搬送コンベヤ7とを含む。本例の製造装置1は、さらに第1の圧接手段9、第2の圧接手段10、及び切断手段8を具える。
Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, a manufacturing apparatus 1 for a multilayer rubber member of the present embodiment (which may be simply referred to as “manufacturing apparatus 1”) includes a first rubber extruder 2 and a second rubber extruder 3. , A third rubber extruder 4 (shown in FIG. 5), a first conveyor 5, a second conveyor 6, and a third conveyor 7. The manufacturing apparatus 1 of this example further includes a first press contacting means 9, a second press contacting means 10, and a cutting means 8.

製造装置1は、長尺の多層ゴム部材G0を形成するために用いられる。   The manufacturing apparatus 1 is used to form a long multi-layer rubber member G0.

図9に示すように、多層ゴム部材G0は、長さ方向と直角な断面が、第1ゴムg1からなる第1ゴム領域Y1と、第2ゴムg2からなる第2ゴム領域Y2と、第3ゴムg3からなる第3ゴム領域Y3とに区分されている。本例では、多層ゴム部材G0が、ビードエーペックスゴム形成用として形成される場合が示される。   As shown in FIG. 9, the multilayer rubber member G0 has a first rubber region Y1 made of the first rubber g1, a second rubber region Y2 made of the second rubber g2, and a third rubber region Y3 in a cross section perpendicular to the length direction. It is divided into a third rubber region Y3 made of rubber g3. In this example, a case where the multilayer rubber member G0 is formed for forming a bead apex rubber is shown.

具体的には、多層ゴム部材G0が、所定長さで切断され、かつその切断片が、タイヤの環状ビードコア30の外周面に貼り着されることによりビードエーペックスゴム31が形成される。   Specifically, the multilayer rubber member G0 is cut into a predetermined length, and the cut pieces are attached to the outer peripheral surface of the annular bead core 30 of the tire to form the bead apex rubber 31.

ビードエーペックスゴム31は、第1ゴム領域Y1と第2ゴム領域Y2とからなる断面略三角形状の本体部31Aを有する。本体部31Aは、環状ビードコア30の外周面に貼り着される底面S1と、底面S1のタイヤ軸方向内端Piから半径方向外端Ptまでのびる内側面S2と、底面S1のタイヤ軸方向外端Poから半径方向外端Ptまでのびる外側面S3とで囲まれる。又本体部31Aは、底面S1上の点P1と、内側面S2上の点P2とを結ぶ斜面S4により、半径方向内側の第1ゴム領域Y1と、半径方向外側の第2ゴム領域Y2とに区分される。前記第1ゴムg1は、第2ゴムg2よりもゴム硬度が大な硬質のゴムから形成され、タイヤのビード剛性を高める。又ビードエーペックスゴム31は、本体部31Aの外側面S3に隣接される薄いシート状の第3ゴム領域Y3を具える。この第3ゴム領域Y3をなす第3ゴムg3は、第2ゴムg2よりも軟質のゴムから形成され、カーカスプライの折返し端を起点とした剥離損傷を防止する。   The bead apex rubber 31 has a main body 31A having a first rubber region Y1 and a second rubber region Y2 and having a substantially triangular cross section. The body portion 31A includes a bottom surface S1 attached to the outer peripheral surface of the annular bead core 30, an inner side surface S2 extending from a tire axial inner end Pi of the bottom surface S1 to a radial outer end Pt, and a tire axial outer end of the bottom surface S1. It is surrounded by the outer surface S3 extending from Po to the radially outer end Pt. Further, the body portion 31A has a first rubber region Y1 on the radially inner side and a second rubber region Y2 on the radially outer side due to the slope S4 connecting the point P1 on the bottom surface S1 and the point P2 on the inner side surface S2. Be divided. The first rubber g1 is formed of a hard rubber having a larger rubber hardness than the second rubber g2, and enhances the bead rigidity of the tire. The bead apex rubber 31 also includes a thin sheet-shaped third rubber region Y3 adjacent to the outer surface S3 of the main body 31A. The third rubber g3 forming the third rubber region Y3 is made of a softer rubber than the second rubber g2, and prevents peeling damage starting from the folded end of the carcass ply.

図1に示すように、第1のゴム押出し機2、第2のゴム押出し機3、及び第3のゴム押出し機4(図5に示す)は、それぞれ、単層ゴム押出し機であって、本例では、スクリュー式の押出し機本体12Aの前端部に、ギアポンプ12Bを具えたものが例示される。第1のゴム押出し機2は、第1ゴム領域Y1に近似した断面形状の第1ゴム体G1を押し出す。第2のゴム押出し機3は、第2ゴム領域Y2に近似した断面形状の第2ゴム体G2を押し出す。第3のゴム押出し機4は、第3ゴム領域Y3に近似した断面形状の第3ゴム体G3を押し出す。   As shown in FIG. 1, the first rubber extruder 2, the second rubber extruder 3, and the third rubber extruder 4 (shown in FIG. 5) are each a single-layer rubber extruder, In this example, a screw type extruder main body 12A having a gear pump 12B at the front end is illustrated. The first rubber extruder 2 pushes out the first rubber body G1 having a cross-sectional shape similar to the first rubber region Y1. The second rubber extruder 3 pushes out the second rubber body G2 having a cross-sectional shape similar to the second rubber region Y2. The third rubber extruder 4 pushes out the third rubber body G3 having a cross-sectional shape similar to the third rubber region Y3.

押出し機本体12A及びギアポンプ12Bとして、周知構造を有する従来の種々の装置が適宜採用しうる。   As the extruder main body 12A and the gear pump 12B, various conventional devices having a well-known structure can be appropriately adopted.

第1搬送コンベヤ5、第2搬送コンベヤ6、及び第3搬送コンベヤ7は、本例では、それぞれベルトコンベヤ部11を含む。このベルトコンベヤ部11は、搬送ベルトが複数の案内ローラにより周回可能に巻装された周知構造をなす。ベルトコンベヤ部11に代えて、ローラコンベヤを採用することもできる。   The first transfer conveyor 5, the second transfer conveyor 6, and the third transfer conveyor 7 each include a belt conveyor unit 11 in this example. The belt conveyor unit 11 has a well-known structure in which a conveyor belt is wound by a plurality of guide rollers so as to be wound around. A roller conveyor may be used instead of the belt conveyor unit 11.

そして、第1搬送コンベヤ5は、第1のゴム押出し機2から受け取った第1ゴム体G1を、搬送方向の下流側端部E1Lまで長さ方向に搬送する。第2搬送コンベヤ6は、第1搬送コンベヤ5の上方を通る。又第2搬送コンベヤ6は、第2のゴム押出し機3から受け取った第2ゴム体G2を、搬送方向の下流側端部E2Lまで、第1ゴム体G1と同方向に搬送する。   Then, the first transport conveyor 5 transports the first rubber body G1 received from the first rubber extruder 2 in the length direction to the downstream end E1L in the transport direction. The second transfer conveyor 6 passes above the first transfer conveyor 5. Moreover, the 2nd conveyance conveyor 6 conveys the 2nd rubber body G2 received from the 2nd rubber extrusion machine 3 to the downstream side end part E2L of a conveyance direction in the same direction as the 1st rubber body G1.

図2、3に示すように、本例では、第1搬送コンベヤ5は、その搬送面5s上で、前記内側面S2をなす第1ゴム体G1の面S2aを受ける。又第2搬送コンベヤ6も、その搬送面6s上で、前記内側面S2をなす第2ゴム体G2の面S2bを受ける。   As shown in FIGS. 2 and 3, in this example, the first transport conveyor 5 receives the surface S2a of the first rubber body G1 forming the inner side surface S2 on the transport surface 5s. The second conveyor 6 also receives the surface S2b of the second rubber body G2 forming the inner side surface S2 on the conveyor surface 6s.

第2搬送コンベヤ6の下流側端部E2Lが、第1搬送コンベヤ5の搬送面5sの上方で途切れることにより、前記下流側端部E2Lから送り出される第2ゴム体G2は、第1搬送コンベヤ5の第1ゴム体G1上に、第1の合流位置Q1にて重ね合わされる。そして第1の合流位置Q1よりも下流側では、前記斜面S4をなす第1ゴム体G1の面S4aと第2ゴム体G2の面S4bとが上下に重なり合って2層ゴムGAが形成される。   Since the downstream end E2L of the second transfer conveyor 6 is interrupted above the transfer surface 5s of the first transfer conveyor 5, the second rubber body G2 sent out from the downstream end E2L is the first transfer conveyor 5 Are superposed on the first rubber body G1 at the first joining position Q1. Then, on the downstream side of the first joining position Q1, the surface S4a of the first rubber body G1 forming the slope S4 and the surface S4b of the second rubber body G2 are vertically overlapped to form a two-layer rubber GA.

本例では、第1搬送コンベヤ5は、搬送面5sが搬送方向下流側に向かって上傾斜でのびる傾斜搬送部5Aと、この傾斜搬送部5Aに屈曲部Jで連なり搬送方向下流にのびる搬送面5sが略水平な水平搬送部5Bとを具える。又第2搬送コンベヤ6は、下流側端部E2Lが、傾斜搬送部5Aの上方で途切れ、かつ第2搬送コンベヤ6の搬送面6sの延長面が、水平搬送部5Bの搬送面5sと面一状に整一するのが好ましい。   In the present example, the first conveyor 5 includes an inclined conveyor 5A having a conveyor surface 5s extending upward toward the downstream side in the conveyor direction, and a conveyor surface connected to the inclined conveyor 5A at a bent portion J and extending downstream in the conveyor direction. 5s includes a horizontal transport unit 5B that is substantially horizontal. The downstream end E2L of the second transfer conveyor 6 is interrupted above the inclined transfer unit 5A, and the extension surface of the transfer surface 6s of the second transfer conveyor 6 is flush with the transfer surface 5s of the horizontal transfer unit 5B. It is preferable to make uniform.

図4に示すように、傾斜搬送部5A上の第1ゴム体G1は、搬送の進行とともに上昇し、下流側端部E2Lから送り出された第2ゴム体G2と、面S4a、S4bが重なり合って接合される。このとき、搬送面6sの延長面が、水平搬送部5Bの搬送面5sと面一状をなすことで、円滑かつ精度の良い接合を行いうる。なお図2では、便宜上、搬送面6sが、水平搬送部5Bの搬送面5sよりも、第1ゴム体G1の厚さ分だけ上方に描かれている。   As shown in FIG. 4, the first rubber body G1 on the inclined conveyance unit 5A rises as the conveyance progresses, and the surfaces S4a and S4b overlap with the second rubber body G2 delivered from the downstream end E2L. To be joined. At this time, the extension surface of the transport surface 6s is flush with the transport surface 5s of the horizontal transport portion 5B, so that smooth and accurate joining can be performed. Note that in FIG. 2, for convenience, the transport surface 6s is drawn above the transport surface 5s of the horizontal transport unit 5B by the thickness of the first rubber body G1.

なお接合精度を高めるために、前記点P2をなす第1ゴム体G1の点P2aを通る垂線Z上に前記点P2をなす第2ゴム体G2の点P2bが位置するように、第1ゴム体G1、第2ゴム体G2を搬送するのが好ましい。   In order to improve the joining accuracy, the first rubber body is arranged such that the point P2b of the second rubber body G2 forming the point P2 is located on the perpendicular line Z passing through the point P2a of the first rubber body G1 forming the point P2. It is preferable to convey G1 and the second rubber body G2.

図5に示すように、第3搬送コンベヤ7は、第3のゴム押出し機4から押し出される第3ゴム体G3を、2層ゴムGA上に搬送し、かつこの2層ゴムGAと第2の合流位置Q2で重ね合わせて多層ゴム部材G0を形成する。   As shown in FIG. 5, the third transfer conveyor 7 transfers the third rubber body G3 extruded from the third rubber extruder 4 onto the two-layer rubber GA, and the two-layer rubber GA and the second rubber GA. The multi-layered rubber member G0 is formed by superposing at the merging position Q2.

本例では、第3搬送コンベヤ7は、ベルトコンベヤ部11と、向き変え部13とを具える。ベルトコンベヤ部11は、第1搬送コンベヤ5の上方を通り、第1搬送コンベヤ5の搬送方向とは交差する向き、本例では直交する向きで第3ゴム体G3を搬送する。   In this example, the third conveyor 7 includes a belt conveyor section 11 and a direction changing section 13. The belt conveyor unit 11 passes above the first transfer conveyor 5 and transfers the third rubber body G3 in a direction intersecting the transfer direction of the first transfer conveyor 5, that is, a direction orthogonal to the transfer direction in this example.

又向き変え部13は、ベルトコンベヤ部11から受け取った第3ゴム体G3を、第1搬送コンベヤ5上の2層ゴムGAと同方向に向き変えする。本例では、向き変え部13は、軸心が第1搬送コンベヤ5の搬送方向と同方向に向く上の案内ローラ13aと、軸心が第1搬送コンベヤ5の搬送方向と直交する向きに向く下の案内ローラ13bとを含み、この間で第3ゴム体G3に捻りを加えることにより、第3ゴム体G3の向き変えが行われる。   The direction changing unit 13 changes the direction of the third rubber body G3 received from the belt conveyor unit 11 in the same direction as the two-layer rubber GA on the first transport conveyor 5. In this example, the direction changing portion 13 has an upper guide roller 13a whose axis is oriented in the same direction as the transport direction of the first transport conveyor 5 and a direction whose axis is orthogonal to the transport direction of the first transport conveyor 5. By including a lower guide roller 13b and twisting the third rubber body G3 between them, the orientation of the third rubber body G3 is changed.

図2に示すように、第1の合流位置Q1より下流側に、第1の圧接手段9が配されるとともに、第2の合流位置Q2より下流側に、第2の圧接手段10が配される。   As shown in FIG. 2, the first pressure contact means 9 is arranged downstream of the first merge position Q1, and the second pressure contact means 10 is arranged downstream of the second merge position Q2. It

第1の圧接手段9は、2層ゴムGAにおける第2ゴム体G2を第1ゴム体G1に押し付けて両者を圧接させる。又第2の圧接手段10は、多層ゴム部材G0における第3ゴム体G3を2層ゴムGAに押し付けて両者を圧接させる。   The first press-contact means 9 presses the second rubber body G2 of the two-layer rubber GA against the first rubber body G1 to press them together. The second pressing means 10 presses the third rubber body G3 of the multilayer rubber member G0 against the two-layer rubber GA to bring them into pressure contact.

第1、第2の圧接手段9、10は同構成であり、昇降移動可能に支持されかつ下降により第2ゴム体G2を第1ゴム体G1に押し付ける、或いは第3ゴム体G3を2層ゴムGAに押し付ける押付け体16を具える。   The first and second press-contact means 9 and 10 have the same structure, and are supported so as to be movable up and down and move downward to press the second rubber body G2 against the first rubber body G1 or the third rubber body G3 into a two-layer rubber. A pressing body 16 for pressing the GA is provided.

押付け体16は、シリンダ等の昇降具17と、そのロッド端にホルダ18を介して回転可能に支持される押圧ローラ19とを含む。押圧ローラ19は、図6(a)、(b)に示すように、ホルダ18に枢支される芯金19Aと、その周囲に配されるスポンジ材等からなる変形可能な軟質部19Bとを具える。そして、軟質部19Bの圧縮変形により、例えば断面略三角形状の2層ゴムGA、及び多層ゴム部材G0において、第2ゴム体G2と第1ゴム体G1、及び第3ゴム体G3と2層ゴムGAとを均一に圧接させて接合させうる。押圧ローラ19として、種々のものが採用しうる。   The pressing body 16 includes an elevating tool 17 such as a cylinder, and a pressing roller 19 rotatably supported on a rod end of the lifting tool 17 via a holder 18. As shown in FIGS. 6 (a) and 6 (b), the pressing roller 19 includes a cored bar 19A pivotally supported by the holder 18 and a deformable soft part 19B made of a sponge material or the like arranged around the cored bar 19A. Equipped. Then, due to the compressive deformation of the soft part 19B, for example, in the two-layer rubber GA having a substantially triangular cross section and the multilayer rubber member G0, the second rubber body G2 and the first rubber body G1, and the third rubber body G3 and the two-layer rubber The GA and the GA can be evenly pressed and joined together. As the pressing roller 19, various types can be adopted.

図1に示すように、切断手段8は、第1搬送コンベヤ5から連続的に送られる多層ゴム部材G0を受け取る受取りコンベヤ部14と、この受取りコンベヤ部14上で、多層ゴム部材G0を所定長さで切断して順次ビードエーペックスゴム31を得るための切断部15とを具える。   As shown in FIG. 1, the cutting means 8 receives a multi-layered rubber member G0 continuously fed from the first transfer conveyor 5, and a receiving conveyor unit 14 and a predetermined length of the multi-layered rubber member G0 on the receiving conveyor unit 14. And a cutting portion 15 for sequentially obtaining the bead apex rubber 31 by cutting.

受取りコンベヤ部14は、多層ゴム部材G0を間欠送りし、停止中に、切断部15により多層ゴム部材G0を所定長さで切断する。なお第1搬送コンベヤ5による連続搬送と、受取りコンベヤ部14による間欠送りとを同期させるため、第1搬送コンベヤ5と受取りコンベヤ部14との間に、多層ゴム部材G0を一時的に貯留するフェスツーン部28が配される。   The receiving conveyor section 14 intermittently feeds the multi-layered rubber member G0, and cuts the multi-layered rubber member G0 with a predetermined length by the cutting section 15 during the stop. A festoon for temporarily storing the multi-layer rubber member G0 between the first transfer conveyor 5 and the receiving conveyor unit 14 in order to synchronize the continuous transfer by the first transfer conveyor 5 and the intermittent feeding by the receiving conveyor unit 14. The part 28 is arranged.

前記「所定長さ」とは、ビードエーペックスゴム31が、環状ビードコア30の外周面で一周巻きしうる長さを意味する。   The “predetermined length” means a length by which the bead apex rubber 31 can be wound around the outer peripheral surface of the annular bead core 30 once.

図7に示すように、一周巻きした後の周方向の端面e1、e2同士を突き合わせて接合させるためには、ビードエーペックスゴム31の周方向に延びる第1側部K1が、周方向に延びる第2側部K2よりも長くなるように多層ゴム部材G0を切断する必要がある。第2側部K2は、底面S1に相当し、環状ビードコア30の半径方向外側の表面上に配置される。又第1側部K1は、外端Ptに相当する。   As shown in FIG. 7, in order to butt and join the end faces e1 and e2 in the circumferential direction after one turn, the first side portion K1 of the bead apex rubber 31 extending in the circumferential direction is a first side portion extending in the circumferential direction. It is necessary to cut the multilayer rubber member G0 so that it is longer than the two side portions K2. The second side portion K2 corresponds to the bottom surface S1 and is arranged on the radially outer surface of the annular bead core 30. The first side portion K1 corresponds to the outer end Pt.

そのために、切断手段8は、隣接するビードエーペックスゴム31、31の間から独立した三角形または台形の部分20を切断するように多層ゴム部材A0を切断する。切断する部分20の第1側部K1側の長さLiは、第2側部K2側の長さLoよりも大である。   For that purpose, the cutting means 8 cuts the multilayer rubber member A0 so as to cut the independent triangular or trapezoidal portion 20 from between the adjacent bead apex rubbers 31, 31. The length Li of the portion 20 to be cut on the first side K1 side is larger than the length Lo on the second side K2 side.

図8(a)に誇張して示すように、本例の切断部15は、多層ゴム部材G0の長さ方向に対して歯部21aが直角な第1カッタ21と、前記長さ方向に対して鋭角な角度αで歯部22aが傾く第2カッタ22とを具える。第2カッタ22は、第1カッタ21よりも下流側で多層ゴム部材G0を切断する。なお第1カッタ21及び第2カッタ22は、本例では、例えばシリンダ等の進退具(図示省略)により、それぞれ歯部21a、22aと直角な向きに進退可能に支持される。又図8(b)に示すように、第1カッタ21及び第2カッタ22は、多層ゴム部材G0の厚さ方向に対して鋭角な角度βで傾斜するのも好ましい。このように角度βで傾斜することにより、周方向の端面e1、e2間の接合面積を増加でき、接合強固を高めうる。なお切断部15としては、前記部分20を有して切断しうるものであれば、種々のものが採用しうる。   As shown in an exaggerated manner in FIG. 8A, the cutting portion 15 of this example includes a first cutter 21 whose tooth portion 21a is perpendicular to the length direction of the multilayer rubber member G0, and a cutting portion 15 with respect to the length direction. And a second cutter 22 in which the tooth portion 22a is inclined at an acute angle α. The second cutter 22 cuts the multilayer rubber member G0 on the downstream side of the first cutter 21. In this example, the first cutter 21 and the second cutter 22 are supported by an advancing / retreating tool (not shown) such as a cylinder so as to be capable of advancing / retreating in a direction perpendicular to the tooth portions 21a and 22a, respectively. Further, as shown in FIG. 8B, it is also preferable that the first cutter 21 and the second cutter 22 are inclined at an acute angle β with respect to the thickness direction of the multilayer rubber member G0. By inclining at the angle β in this way, the joining area between the end faces e1 and e2 in the circumferential direction can be increased, and the joining strength can be enhanced. As the cutting part 15, various types can be adopted as long as it has the part 20 and can be cut.

本例の製造装置1は、速度制御手段27(図示省略)をさらに具える。この速度制御手段27は、第1搬送コンベヤ5の搬送速度V1cに応じて、第1のゴム押出し機2のゴム押出し速度V1gを変化させる。又速度制御手段27は、第2搬送コンベヤ6の搬送速度V2cに応じて、第2のゴム押出し機3のゴム押出し速度V2gを変化させる。   The manufacturing apparatus 1 of this example further includes speed control means 27 (not shown). The speed control means 27 changes the rubber extrusion speed V1g of the first rubber extruder 2 according to the transfer speed V1c of the first transfer conveyor 5. Further, the speed control means 27 changes the rubber extrusion speed V2g of the second rubber extruder 3 according to the transfer speed V2c of the second transfer conveyor 6.

具体的には、通常、多層ゴム部材G0を形成する際、第1搬送コンベヤ5の搬送速度V1c、第2搬送コンベヤ6の搬送速度V2c、第3搬送コンベヤ7の搬送速度V3c、及び多層ゴム部材G0を環状ビードコア30に貼り付ける速度は、互いに等しい定常速度で運転されるのが好ましい。   Specifically, when forming the multi-layered rubber member G0, usually, the transfer speed V1c of the first transfer conveyor 5, the transfer speed V2c of the second transfer conveyor 6, the transfer speed V3c of the third transfer conveyor 7, and the multi-layered rubber member. The speed at which G0 is attached to the annular bead core 30 is preferably operated at a steady speed equal to each other.

多層ゴム部材G0の切断時は、受取りコンベヤ部14を停止させた状態で行われる。このとき、第1搬送コンベヤ5、第2搬送コンベヤ6、及び第3搬送コンベヤ7の搬送速度V1c〜V3cは、前記定常速度よりも遅い低速度、好ましくは停止に近い低速度で運転されるのが望ましい。   When cutting the multi-layered rubber member G0, the receiving conveyor unit 14 is stopped. At this time, the transfer speeds V1c to V3c of the first transfer conveyor 5, the second transfer conveyor 6, and the third transfer conveyor 7 are operated at a lower speed than the steady speed, preferably at a low speed close to a stop. Is desirable.

そこで、受取りコンベヤ部14のオン/オフに同期させて搬送速度V1c〜V3cを停止に近い低速度に切り替えるとともに、速度制御手段27は、前記搬送速度V1c〜V3cに応じて、第1〜第3のゴム押出し機2〜4のゴム押出し速度V1g〜V3gを変化させる。   Therefore, the transfer speeds V1c to V3c are switched to low speeds close to the stop in synchronization with turning on / off of the receiving conveyor unit 14, and the speed control means 27 determines the first to third speeds according to the transfer speeds V1c to V3c. The rubber extrusion speeds V1g to V3g of the rubber extruders 2 to 4 are changed.

又多層ゴム部材の製造方法では、前記製造装置1を用いることで、長さ方向と直角な断面が、第1ゴムg1からなる第1ゴム領域Y1と、第2ゴムg2からなる第2ゴム領域Y2、第3ゴムg3からなる第3ゴム領域Y3とに区分された長尺の多層ゴム部材G0を構成簡易に製造することができる。   Further, in the method for manufacturing a multilayer rubber member, by using the manufacturing apparatus 1, a cross section perpendicular to the length direction has a first rubber region Y1 made of the first rubber g1 and a second rubber region made of the second rubber g2. The long multi-layered rubber member G0 divided into Y2 and the third rubber region Y3 including the third rubber g3 can be manufactured with a simple structure.

以上、本発明の特に好ましい実施形態について詳述したが、本発明は図示の実施形態に限定されることなく、種々の態様に変形して実施しうる。   Although the particularly preferred embodiments of the present invention have been described above in detail, the present invention is not limited to the illustrated embodiments and can be modified into various modes.

1 製造装置
2 第1のゴム押出し機
3 第2のゴム押出し機
4 第3のゴム押出し機
5 第1搬送コンベヤ
5s 搬送面
6 第2搬送コンベヤ
6s 搬送面
7 第3搬送コンベヤ
8 切断手段
9 第1の圧接手段
10 第2の圧接手段
12B ギアポンプ
20 部分
27 速度制御手段
28 フェスツーン部
30 環状ビードコア
31 ビードエーペックスゴム
E2L 流側端部
G0 多層ゴム部材
G1 第1ゴム体
G2 第2ゴム体
G3 第3ゴム体
GA 2層ゴム
g1 第1ゴム
g2 第2ゴム
g3 第3ゴム
K1 第1側部
K2 第2側部
Q1 第1の合流位置
Q2 第2の合流位置
Y1 第1ゴム領域
Y2 第2ゴム領域
Y3 第3ゴム領域
1 Manufacturing Apparatus 2 First Rubber Extruder 3 Second Rubber Extruder 4 Third Rubber Extruder 5 First Conveyor 5s Conveying Surface 6 Second Conveying Conveyor 6s Conveying Surface 7 Third Conveying Conveyor 8 Cutting Means 9th 1 pressure contact means 10 2nd pressure contact means 12B gear pump 20 part 27 speed control means 28 festoon part 30 annular bead core 31 bead apex rubber E2L flow side end G0 multi-layer rubber member G1 first rubber body G2 second rubber body G3 third Rubber body GA Two-layer rubber g1 First rubber g2 Second rubber g3 Third rubber K1 First side part K2 Second side part Q1 First merging position Q2 Second merging position Y1 First rubber region Y2 Second rubber region Y3 Third rubber area

Claims (11)

長さ方向と直角な断面が、第1ゴムからなる第1ゴム領域と、第2ゴムからなる第2ゴム領域と、第3ゴムからなる第3ゴム領域とに区分された長尺の多層ゴム部材の製造装置であって、
第1のゴム押出し機と、
第2のゴム押出し機と、
第3のゴム押出し機と、
前記第1のゴム押出し機から押し出される第1ゴム体を搬送する第1搬送コンベヤと、
前記第1搬送コンベヤの上方を通り、かつ前記第2のゴム押出し機から押し出される第2ゴム体を、前記第1ゴム体と同方向に搬送する第2搬送コンベヤと、
前記第3のゴム押出し機から押し出される第3ゴム体を搬送する第3搬送コンベヤとを具え、
前記第2搬送コンベヤは、その搬送方向の下流側端部が前記第1搬送コンベヤの搬送面の上方で途切れ、前記下流側端部から送り出される第2ゴム体を、前記第1搬送コンベヤの第1ゴム体上に第1の合流位置で重ね合わせて2層ゴムを形成し、
前記第3搬送コンベヤは、前記第3ゴム体を、前記2層ゴム上に第2の合流位置で重ね合わせて多層ゴム部材を形成する、
多層ゴム部材の製造装置。
A long multi-layered rubber whose cross section perpendicular to the length direction is divided into a first rubber region made of a first rubber, a second rubber region made of a second rubber, and a third rubber region made of a third rubber. A device for manufacturing a member,
A first rubber extruder,
A second rubber extruder,
A third rubber extruder,
A first conveyor that conveys a first rubber body extruded from the first rubber extruder,
A second conveyor that conveys a second rubber body that passes above the first conveyor and is extruded from the second rubber extruder in the same direction as the first rubber body;
A third conveyor that conveys a third rubber body extruded from the third rubber extruder,
The second transport conveyor has a downstream end in the transport direction that is interrupted above the transport surface of the first transport conveyor, and a second rubber body fed from the downstream end is transferred to the first transport conveyor. One rubber body is superposed at the first merging position to form a two-layer rubber,
The third conveyor conveys the third rubber body on the second-layer rubber at a second merging position to form a multi-layer rubber member.
Multi-layer rubber member manufacturing equipment.
前記第1の合流位置より下流側に、前記2層ゴムの第1ゴム体と第2ゴム体とを圧接させる第1の圧接手段を具える、
請求項1記載の多層ゴム部材の製造装置。
Downstream of the first merging position, there is provided a first press-contact means for press-contacting the first rubber body and the second rubber body of the two-layer rubber.
The apparatus for manufacturing a multilayer rubber member according to claim 1.
前記第2の合流位置より下流側に、前記多層ゴム部材の第3ゴム体と2層ゴムとを圧接させる第2の圧接手段を具える、
請求項1又は2記載の多層ゴム部材の製造装置。
Downstream of the second merging position, a second press-contact means for press-contacting the third rubber body of the multilayer rubber member and the two-layer rubber is provided.
The apparatus for manufacturing a multilayer rubber member according to claim 1.
前記第1、第2、第3のゴム押出し機は、それぞれ前端部にギアポンプを具える、 請求項1〜3の何れかに記載の多層ゴム部材の製造装置。   The said 1st, 2nd, 3rd rubber extruder is equipped with the gear pump in the front-end part, respectively, The manufacturing apparatus of the multilayer rubber member in any one of Claims 1-3. 前記第1搬送コンベヤの搬送速度に応じて、前記第1のゴム押出し機のゴム押出し速度を変化させ、かつ前記第2搬送コンベヤの搬送速度に応じて、前記第2のゴム押出し機のゴム押出速度を変化させる速度制御手段を具える、
請求項1〜4の何れかに記載の多層ゴム部材の製造装置。
The rubber extrusion speed of the first rubber extruder is changed according to the transfer speed of the first transfer conveyor, and the rubber extrusion of the second rubber extruder is changed according to the transfer speed of the second transfer conveyor. With speed control means to change speed,
The manufacturing apparatus of the multilayer rubber member according to claim 1.
前記多層ゴム部材は、タイヤの環状ビードコアの外周面に貼り着されるビードエーペックスゴム用である、
請求項1〜5の何れかに記載の多層ゴム部材の製造装置。
The multi-layer rubber member is for bead apex rubber to be attached to the outer peripheral surface of the annular bead core of the tire,
The apparatus for manufacturing a multilayer rubber member according to claim 1.
前記多層ゴム部材を、所定長さで切断して順次ビードエーペックスゴムを得るための切断手段を含む、
請求項6記載の多層ゴム部材の製造装置。
The multilayer rubber member, including a cutting means for cutting the predetermined length to obtain a bead apex rubber sequentially,
The apparatus for manufacturing a multilayer rubber member according to claim 6.
前記切断手段と前記第1搬送コンベヤとの間に、前記多層ゴム部材を一時的に貯留するフェスツーン部が配される、
請求項7記載の多層ゴム部材の製造装置。
A festoon portion for temporarily storing the multilayer rubber member is arranged between the cutting means and the first conveyor.
The apparatus for manufacturing a multilayer rubber member according to claim 7.
前記切断手段は、前記ビードエーペックスゴムの周方向に延びる第1側部が、周方向に延びる第2側部よりも長くなるように多層ゴム部材を切断し、
前記ビードエーペックスゴムの各々の第2側部は、ビードコアの半径方向外側の表面上に配置される、
請求項7又は8記載の多層ゴム部材の製造装置。
The cutting means cuts the multilayer rubber member such that a first side portion of the bead apex rubber extending in the circumferential direction is longer than a second side portion extending in the circumferential direction,
A second side of each of the bead apex rubbers is disposed on a radially outer surface of the bead core,
The apparatus for manufacturing a multilayer rubber member according to claim 7.
前記切断手段は、隣接するビードエーペックスゴムの間から独立した三角形または台形の部分を切断するように多層ゴム部材を切断する、
請求項9記載の多層ゴム部材の製造装置。
The cutting means cuts the multilayer rubber member so as to cut an independent triangular or trapezoidal portion from between adjacent bead apex rubbers,
The apparatus for manufacturing a multilayer rubber member according to claim 9.
請求項1〜10の何れかに記載の多層ゴム部材の製造装置を用い、長さ方向と直角な断面が、第1ゴムからなる第1ゴム領域と、第2ゴムからなる第2ゴム領域と、第3ゴムからなる第3ゴム領域とに区分された長尺の多層ゴム部材を製造する、
多層ゴム部材の製造方法。
The apparatus for manufacturing a multilayer rubber member according to any one of claims 1 to 10, wherein a cross section perpendicular to a length direction includes a first rubber region made of a first rubber and a second rubber region made of a second rubber. Manufacturing a long multi-layered rubber member divided into a third rubber region made of a third rubber,
Method for manufacturing multi-layer rubber member.
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