JP2009114583A - Method for producing steel cord for rubber article having flat cross-section and apparatus for flattening steel cord for rubber article - Google Patents

Method for producing steel cord for rubber article having flat cross-section and apparatus for flattening steel cord for rubber article Download PDF

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JP2009114583A
JP2009114583A JP2007288655A JP2007288655A JP2009114583A JP 2009114583 A JP2009114583 A JP 2009114583A JP 2007288655 A JP2007288655 A JP 2007288655A JP 2007288655 A JP2007288655 A JP 2007288655A JP 2009114583 A JP2009114583 A JP 2009114583A
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steel cord
rollers
flat
section
cross
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JP5014955B2 (en
JP2009114583A5 (en
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Hiroyuki Matsuo
博行 松尾
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Bridgestone Corp
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Bridgestone Corp
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/007—Making ropes or cables from special materials or of particular form comprising postformed and thereby radially plastically deformed elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/027—Postforming of ropes or strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2016—Strands characterised by their cross-sectional shape
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2016—Strands characterised by their cross-sectional shape
    • D07B2201/2018—Strands characterised by their cross-sectional shape oval
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2019—Strands pressed to shape

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  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a steel cord for rubber articles, capable of adjusting the flatness of the steel cord cross-section over a wide range and sufficiently correcting the straightness of the steel cord and to provide a flattening apparatus for the production. <P>SOLUTION: A flat roller group 24X consisting of three flat rollers 24A is placed at the inlet side P of a steel cord 10 to apply repeated bending to the steel cord 10 and flatten the cross-section of the steel cord 10, and a fluted roller group 24Y consisting of six fluted rollers 24B is placed at the outlet side Q after the flattening stage to correct the straightness of the flattened steel cord 10 and make possible separate adjustment of the biting ratio of the flat roller 24A and the biting ratio of the fluted roller 24B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば、空気入りタイヤのプライやベルトになど使用されるゴム物品補強用スチールコードの製造方法に関するもので、特に、コードの断面が扁平であるスチールコードを製造する方法とゴム物品用スチールコードの扁平化装置とに関する。   The present invention relates to a method for manufacturing a steel cord for reinforcing rubber articles used for, for example, a ply or a belt of a pneumatic tire, and more particularly to a method for manufacturing a steel cord having a flat cross section and a rubber article. The present invention relates to a flattening device for steel cords.

近年、タイヤ補強用スチールコードとして、図３に示すような、扁平断面を有するスチールコード１０が製造されている。このような扁平断面を有するスチールコード１０は、例えば、図４に示すように、スチールフィラメントを３〜６本撚り合わせたスチールコード１０をその軸線方向に沿って通過させながら、複数のローラ５１（５１Ａ，５１Ｂ）により、上記スチールコード１０に繰り返し応力を与えてその断面を扁平化する。このとき、スチールコード１０の入り口側Ｐと出口側Ｑのローラには溝付きローラ５１Ａを配置し、中間部のローラには、平坦な円周面を有する溝なしローラ５１Ｂを配置して扁平化処理する。これにより、全てのローラを溝付きローラとした場合に比較して、スチールコード１０に同じたわみ量Ｓ（％）を与えても大きな扁平度Ｍを得ることができるので、スチールコード断面の扁平の度合いを大幅に変更することができる（例えば、特許文献１，２）。
なお、たわみ量Ｓ（％）は、図５の符号δで表わされる、スチールコードの入線時の位置と出線時の位置とを結んだ仮想直線ｍに対してローラ５１を押し込んだ量（以下、噛み込量という）と、上記仮想直線ｍの同じ側にあるローラ５１，５１の間隔Ｌとを用いて、Ｓ＝（δ／Ｌ）×１００で表わされる。また、扁平度Ｍは、スチールコード１０の断面のコード長径をａ、コード短径をｂとしたときに、Ｍ＝ａ／ｂで表わされる。なお、図３において、符号１０Ｗは、スチールコード１０を構成するスチールフィラメントである。
特許第３３３９９５０号公報 特開２００５−１７９８５９号公報 In recent years, a steel cord 10 having a flat cross section as shown in FIG. 3 has been manufactured as a steel cord for reinforcing tires. For example, as shown in FIG. 4, the steel cord 10 having such a flat cross-section has a plurality of rollers 51 ( 51A, 51B), the steel cord 10 is repeatedly stressed to flatten the cross section. At this time, a grooved roller 51A is arranged on the entrance side P and the exit side Q of the steel cord 10, and a grooveless roller 51B having a flat circumferential surface is arranged on the intermediate roller, thereby flattening. To process. Thereby, compared with the case where all the rollers are grooved rollers, a large flatness M can be obtained even when the same deflection amount S (%) is given to the steel cord 10, so that the flatness of the cross section of the steel cord can be obtained. The degree can be significantly changed (for example, Patent Documents 1 and 2).
The deflection amount S (%) is an amount (hereinafter referred to as the amount of pressing of the roller 51) with respect to an imaginary straight line m connecting the steel cord entry position and the exit position represented by the symbol δ in FIG. ), And the distance L between the rollers 51 on the same side of the imaginary straight line m, and S = (δ / L) × 100. The flatness M is represented by M = a / b, where a is the major axis of the cross section of the steel cord 10 and b is the minor axis of the cord. In FIG. 3, reference numeral 10 </ b> W is a steel filament constituting the steel cord 10.
Japanese Patent No. 3333950 JP 2005-179859 A

しかしながら、上記従来の方法では、スチールコード１０の断面の扁平の度合いを広い範囲で調整することは可能であるが、出線されるスチールコード１０の真直性が十分ではないといった問題点があった。   However, in the above conventional method, the flatness of the cross section of the steel cord 10 can be adjusted in a wide range, but there is a problem that the straightness of the outgoing steel cord 10 is not sufficient. .

本発明は、上記従来の問題点に鑑みてなされたもので、スチールコード断面の扁平の度合いを広い範囲で調整することができるとともに、スチールコードの真直性を十分に矯正することのできるゴム物品用スチールコードの製造方法とこれに用いられる扁平化装置を提供することを目的とする。   The present invention has been made in view of the above-mentioned conventional problems, and can adjust the degree of flatness of the cross section of the steel cord in a wide range and can sufficiently correct the straightness of the steel cord. An object of the present invention is to provide a steel cord manufacturing method and a flattening device used therefor.

本願の請求項１に記載の発明は、ゴムが被覆されたスチールフィラメントを３本以上撚り合わせて成るスチールコードを上記スチールコードの通過方向と直交する方向から挟むように、かつ、その位置が上記スチールコードの通過方向にずれて配置された複数のローラを備えた扁平化装置に上記スチールコードを入線させ、上記スチールコードを上記ローラの間を通過させながら、上記各ローラを所定の噛み量で上記スチールコードに接触させて、上記スチールコードに繰り返し曲げを与え、上記スチールコードの断面を扁平化する扁平断面を有するゴム物品用スチールコードの製造方法において、上記スチールコードの入線側に配置される連続する少なくとも３個のローラとして、円周表面が平坦である平ローラを用いて上記スチールコードの断面を扁平化するとともに、上記平ローラの後段に、円周表面の中央部に上記円周に沿った溝部が設けられた溝付きローラを少なくとも３個配置して、上記平ローラによって断面が扁平化されたスチールコードの真直性を矯正するようにしたことを特徴とするものである。
なお、真直性はスチールコードの延長方向に対して直線から所定長さＬあたりどれだけずれているかを示す量である。
また、請求項２に記載の発明は、ゴムが被覆されたスチールフィラメントを３本以上撚り合わせて成るスチールコードを、上記スチールコードの通過方向と直交する方向から挟むように、かつ、その位置が上記スチールコードの通過方向にずれて配置された複数のローラを備え、上記スチールコードを上記ローラの間を通過させながら、上記各ローラを所定の噛み量で上記スチールコードに接触させて、上記スチールコードに繰り返し曲げを与え、上記スチールコードの断面を扁平化するゴム物品用スチールコードの扁平化装置であって、上記スチールコードの入線側に連続して配置される円周表面が平坦である少なくとも３個の平ローラから成るローラ群と、これらの平ローラ群の後段で、上記スチールコードの出線側に連続して配置される少なくとも３個の、円周表面の中央部に上記円周に沿った溝部が設けられた溝付きローラから成る溝付きローラ群とを備えたことを特徴とするものである。
請求項３に記載の発明は、請求項２に記載のゴム物品用スチールコードの扁平化装置において、上記平ローラ群のローラの噛み込み量と、上記溝付きローラ群のローラの噛みこみ量とを独立に設定可能としたものである。 The invention according to claim 1 of the present application is such that a steel cord formed by twisting three or more steel filaments coated with rubber is sandwiched from a direction perpendicular to the passing direction of the steel cord, and the position thereof is The steel cord is inserted into a flattening device having a plurality of rollers arranged so as to be shifted in the passing direction of the steel cord, and the rollers are passed at a predetermined amount while the steel cord is passed between the rollers. In the method for manufacturing a steel cord for a rubber article having a flat cross section in which the steel cord is brought into contact with the steel cord and repeatedly bent and the cross section of the steel cord is flattened, the steel cord is disposed on the incoming side of the steel cord. A flat roller having a flat circumferential surface is used as at least three continuous rollers. And at least three grooved rollers provided with grooves along the circumference at the center of the circumferential surface at the rear stage of the flat roller. It is characterized by correcting the straightness of the flattened steel cord.
The straightness is an amount indicating how much the predetermined length L is deviated from the straight line with respect to the extending direction of the steel cord.
According to a second aspect of the present invention, a steel cord formed by twisting three or more steel filaments coated with rubber is sandwiched from a direction perpendicular to the passing direction of the steel cord, and the position thereof is A plurality of rollers arranged to be shifted in the passing direction of the steel cord, and the steel cord is brought into contact with the steel cord with a predetermined biting amount while passing the steel cord between the rollers, A flattening device for a steel cord for a rubber article for repeatedly bending a cord and flattening a cross section of the steel cord, wherein at least a circumferential surface continuously arranged on an incoming line side of the steel cord is flat A roller group consisting of three flat rollers and the rear stage of these flat roller groups are continuously arranged on the outgoing side of the steel cord. At least three, and is characterized in that the groove along the circumference in the central portion of the circumferential surface and a grooved roller group consisting of grooved rollers provided.
According to a third aspect of the present invention, in the flattening device for a steel cord for rubber articles according to the second aspect, the amount of engagement of the rollers of the flat roller group, and the amount of engagement of the rollers of the grooved roller group, Can be set independently.

本発明によれば、スチールコードの断面を扁平化する際に、はじめに、平ローラを用いて上記スチールコードの断面を扁平化した後、上記断面が扁平化されたスチールコードを溝付きローラに通して上記スチールコードの真直性を矯正するようにしたので、スチールコードの扁平度を広い範囲で調整することができるとともに、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを得ることができる。
このとき、上記平ローラ群のローラの噛み込み量と、上記溝付きローラ群のローラの噛みこみ量とを独立に設定可能とすれば、スチールコードの扁平度の調整と、扁平化されたスチールコードの真直性の調整とを別個にできるので、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを確実に得ることができる。 According to the present invention, when flattening the cross section of the steel cord, first, the flat section of the steel cord is flattened using a flat roller, and then the steel cord having the flattened cross section is passed through the grooved roller. Since the straightness of the steel cord is corrected, the flatness of the steel cord can be adjusted in a wide range, and a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained. Can do.
At this time, if the amount of biting of the roller of the flat roller group and the amount of biting of the roller of the grooved roller group can be set independently, the adjustment of the flatness of the steel cord and the flattened steel Since the straightness of the cord can be adjusted separately, a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained with certainty.

以下、本発明の最良の形態について図面に基づき説明する。
図１及び図２は本最良の形態に関わる扁平化装置２０の概要を示す図で、各図において、矢印で示す方向が扁平化処理されるスチールコード１０の軸線方向である。スチールコード１０の入線側をＰ、出線側をＱとすると、ＰからＱに向かう方向がスチールコード１０の通線方向となる。以下、同図の左,右方向である上記通線方向を扁平化装置２０の長手方向、同図の上,下方向を扁平化装置２０の幅方向、紙面に垂直な方向を高さ方向とする。
同図において、２１は横断面がＬ字状の基台で、この基台２１は平板状のベース部２１Ａとこのベース部２１Ａの入線側Ｐから見て左側に上側に突出するロール設置部２１Ｂとを備えている。上記基台２１の入線側Ｐから見て右側に位置する段差部２１Ｃには、当該基台２１の幅方向に延長する２本のレール部材２２Ｍ，２２Ｎが設けられている。これら２本のレール部材２２Ｍ，２２Ｎのうち入線側Ｐのレール部材２２Ｍには、上記レール部材２２Ｍに沿って幅方向にスライドするブロック状の第１のスライド部材２３Ｍが搭載されており、出線側Ｑのレール部材２２Ｎには、ブロック状の第２のスライド部材２３Ｎが上記レール部材２２Ｎに沿って幅方向にスライド可能に搭載されている。上記ロール設置部２１Ｂと上記第１及び第２のスライド部材２３Ｍ，２３Ｎの上面の位置は、上記基台２１の底面からは同じ高さになるように、それぞれの寸法が設定されている。
上記ロール設置部２１Ｂの上面２１ａには６つローラ２４（２４Ａ，２４Ｂ）が、回転軸が上記上面２１ａに垂直になるように、かつ、隣接するローラ同士の間隔Ｌが全て等しくなるように配置されている。一方、第１のスライド部材２３Ｍの上面２３ａには２つローラ２４Ａが、第２のスライド部材２３Ｎの上面２３ｂには４つローラ２４Ｂが、回転軸が上記上面２１ａに垂直になるように配置されている。ここで、上記第１及び第２のスライド部材２３Ｍ，２３Ｎの上面２３ａ、２３ｂに配置された６つのローラ２４（２４Ａ，２４Ｂ）も隣接するローラ同士の間隔Ｌが全て等しくなるように配置されており、かつ、これら６つのローラ２４は、上記ロール設置部２１Ｂの上面２１ａに配置された６つローラ２４よりも入線側Ｐに（Ｌ／２）だけずれて配置されている。すなわち、上記１２個のローラ２４（２４Ａ，２４Ｂ）は、スチールコード１０の通線方向に沿って千鳥状に配置されている。これにより、上記スチールコード１０の右側と左側とからローラ２４を所定の噛み量で当接させて、上記スチールコード１０の左,右方向に繰り返し曲げを与えて上記スチールコード１０の断面を扁平化することができる。
また、符号２５は上記第１及び第２のスライド部材２３Ｍ，２３Ｎを上記レール部材２２Ｍ，２２Ｎに沿ってそれぞれ別個にスライドさせて、上記ロール設置部２１Ｂと上記第１のスライド部材２３Ｍとの間隔Ｗｘと、上記ロール設置部２１Ｂと上記第２のスライド部材２３Ｎとの間隔Ｗｙとをそれぞれ別個に設定する噛みこみ量調整手段である。
本例では、上記噛みこみ量調整手段２５を、一端が上記第１のスライド部材２３Ｍの側面２３ｃに当接する調整ボルト２５ａと、一端が上記第２のスライド部材２３Ｎの側面２３ｄにそれぞれ当接する２本の調整ボルト２５ｂ，２５ｂと、上記基台２１のロール設置部２１Ｂとは反対側の側面２１ｂに固定された、上記調整ボルト２５ａ，２５ｂがそれぞれ螺入される雌ねじ部２５ｃ，２５ｃが設けられた固定坂２５ｄと、この固定坂２５ｄと上記第１及び第２のスライド部材２３Ｍ，２３Ｎとを連結する戻しバネ（図示せず）とから構成した。なお、図２では、上記噛みこみ量調整手段２５を省略した。 Hereinafter, the best mode of the present invention will be described with reference to the drawings.
1 and 2 are views showing an outline of the flattening device 20 according to the best mode, and in each figure, the direction indicated by the arrow is the axial direction of the steel cord 10 to be flattened. If the incoming line side of the steel cord 10 is P and the outgoing line side is Q, the direction from P to Q is the passing direction of the steel cord 10. In the following, the above-mentioned line direction, which is the left and right directions in the figure, is the longitudinal direction of the flattening device 20, the top and bottom directions are the width direction of the flattening device 20, and the direction perpendicular to the page is the height direction. To do.
In the figure, reference numeral 21 denotes a base having an L-shaped cross section. The base 21 is a flat base portion 21A and a roll installation portion 21B that protrudes upward on the left side when viewed from the incoming line side P of the base portion 21A. And. Two rail members 22 </ b> M and 22 </ b> N extending in the width direction of the base 21 are provided on the step portion 21 </ b> C located on the right side when viewed from the entry line side P of the base 21. Of these two rail members 22M and 22N, the rail member 22M on the incoming line side P is mounted with a block-like first slide member 23M that slides in the width direction along the rail member 22M. A block-shaped second slide member 23N is mounted on the rail member 22N on the side Q so as to be slidable in the width direction along the rail member 22N. The positions of the upper surfaces of the roll installation portion 21B and the first and second slide members 23M and 23N are set so that the respective heights are the same from the bottom surface of the base 21.
Six rollers 24 (24A, 24B) are arranged on the upper surface 21a of the roll installation portion 21B so that the rotation axis is perpendicular to the upper surface 21a and the intervals L between adjacent rollers are all equal. Has been. On the other hand, two rollers 24A are arranged on the upper surface 23a of the first slide member 23M, and four rollers 24B are arranged on the upper surface 23b of the second slide member 23N so that the rotation axis is perpendicular to the upper surface 21a. ing. Here, the six rollers 24 (24A, 24B) arranged on the upper surfaces 23a, 23b of the first and second slide members 23M, 23N are also arranged so that the intervals L between adjacent rollers are all equal. In addition, these six rollers 24 are arranged so as to be shifted by (L / 2) on the incoming line side P with respect to the six rollers 24 arranged on the upper surface 21a of the roll installation portion 21B. That is, the twelve rollers 24 (24A, 24B) are arranged in a staggered manner along the direction of the steel cord 10 through. As a result, the roller 24 is brought into contact with the right and left sides of the steel cord 10 with a predetermined amount of engagement, and is repeatedly bent in the left and right directions of the steel cord 10 to flatten the cross section of the steel cord 10. can do.
Reference numeral 25 denotes a distance between the roll installation portion 21B and the first slide member 23M by sliding the first and second slide members 23M and 23N separately along the rail members 22M and 22N. The biting amount adjusting means sets Wx and the interval Wy between the roll installation portion 21B and the second slide member 23N separately.
In this example, the biting amount adjusting means 25 has an adjustment bolt 25a whose one end is in contact with the side surface 23c of the first slide member 23M and one end which is in contact with the side surface 23d of the second slide member 23N. Adjustment bolts 25b, 25b, and female screw portions 25c, 25c fixed to a side surface 21b of the base 21 opposite to the roll installation portion 21B, into which the adjustment bolts 25a, 25b are respectively screwed. The fixed slope 25d and a return spring (not shown) for connecting the fixed slope 25d and the first and second slide members 23M and 23N. In FIG. 2, the biting amount adjusting means 25 is omitted.

本発明による扁平化装置２０では、上記ローラ２４のうち、上記スチールコードの入線側Ｐに配置される３つのローラとして、円周表面が平坦である平ローラ２４Ａを用い、この３つの平ローラ２４Ａの後段に配置された９つのローラとして、円周表面の中央部に円周に沿った溝部が設けられた溝付きローラ２４Ｂを用いている。以下、上記３つの平ローラ２４Ａから成るローラ群を平ローラ群２４Ｘ、上記９つの溝付きローラ２４Ｂから成るローラ群を溝付きローラ群２４Ｙという。本例では、上記平ローラ群２４Ｘのローラ２４Ａを用いてスチールコード１０の扁平度Ｍを調整し、上記溝付きローラ群２４Ｙのローラ２４Ｂを用いて真直性を矯正する。
ローラ２４Ａ，２４Ａの間隔（長手方向の間隔）Ｌが一定のときにスチールコード１０の扁平度Ｍを大きくする場合には、図５のδで示した噛み込量をある程度大きく取る必要があることから、スチールコード１０の両側にあるローラ２４Ａ，２４Ａの間隔を狭くする必要がある。すなわち、ロール設置部２１Ｂと上記第１のスライド部材２３Ｍとの間隔Ｗｘを狭くする必要がある。一方、真直性を矯正するためには噛み込量δは扁平化時の噛み込量δよりも小さくする方がよい。すなわち、ロール設置部２１Ｂと上記第２のスライド部材２３Ｎとの間隔Ｗｙを上記間隔Ｗｘよりも大きくする必要がある。
本例では、上記間隔Ｗｘと上記間隔Ｗｙとをそれぞれ別個に設定することのできる噛みこみ量調整手段２５を備えているので、上記間隔Ｗｙを上記間隔Ｗｘよりも大きくすることが可能である。具体的には、第１のスライド部材２３Ｍに当接する噛みこみ量調整手段２５の調整ボルト２５ａの押し込み量を大きくし、第２のスライド部材２３Ｎに当接する調整ボルト２５ｂ，２５ｂの押し込み量を小さくすればよい。
これにより、表面が平坦な平ローラ２４Ａから成る平ローラ群２４Ｘにより扁平化されたスチールコード１０の真直度を、表面に溝が設けられた溝付きローラ２４Ｂから成る溝付きローラ群２４Ｙにより矯正することができるので、スチールコード１０の扁平度Ｍを広い範囲で調整することができるとともに、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを得ることができる。 In the flattening device 20 according to the present invention, among the rollers 24, as the three rollers arranged on the steel cord entrance side P, flat rollers 24A having a flat circumferential surface are used, and the three flat rollers 24A are used. As the nine rollers arranged in the subsequent stage, a grooved roller 24B in which a groove portion along the circumference is provided at the center of the circumferential surface is used. Hereinafter, the roller group including the three flat rollers 24A is referred to as a flat roller group 24X, and the roller group including the nine grooved rollers 24B is referred to as a grooved roller group 24Y. In this example, the flatness M of the steel cord 10 is adjusted using the roller 24A of the flat roller group 24X, and the straightness is corrected using the roller 24B of the grooved roller group 24Y.
In order to increase the flatness M of the steel cord 10 when the distance (interval in the longitudinal direction) L between the rollers 24A and 24A is constant, it is necessary to increase the biting amount indicated by δ in FIG. Therefore, it is necessary to narrow the distance between the rollers 24A and 24A on both sides of the steel cord 10. That is, it is necessary to narrow the interval Wx between the roll installation portion 21B and the first slide member 23M. On the other hand, in order to correct the straightness, it is better to make the biting amount δ smaller than the biting amount δ at the time of flattening. That is, it is necessary to make the interval Wy between the roll installation portion 21B and the second slide member 23N larger than the interval Wx.
In this example, since the engagement amount adjusting means 25 that can set the interval Wx and the interval Wy separately is provided, the interval Wy can be made larger than the interval Wx. Specifically, the pushing amount of the adjusting bolt 25a of the biting amount adjusting means 25 that comes into contact with the first slide member 23M is increased, and the pushing amount of the adjusting bolts 25b and 25b that are brought into contact with the second slide member 23N is reduced. do it.
Accordingly, the straightness of the steel cord 10 flattened by the flat roller group 24X including the flat roller 24A having a flat surface is corrected by the grooved roller group 24Y including the grooved roller 24B having a groove on the surface. Therefore, the flatness M of the steel cord 10 can be adjusted in a wide range, and a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained.

このように、本最良の形態によれば、スチールコード１０の入線側Ｐに３つの平ローラ２４Ａから成る平ローラ群２４Ｘを配置して上記スチールコード１０に繰り返し曲げを与えて上記スチールコード１０の断面を扁平化するとともに、その後段の出線側Ｑに、６つの溝付きローラ２４Ｂから成る溝付きローラ群２４Ｙを配置して、上記扁平化されたスチールコード１０の真直度を矯正するようにしたので、スチールコード１０の扁平度を広い範囲で調整することができるとともに、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを得ることができる。
また、スチールコード１０の右側で平ローラ２４Ａが搭載された第１のスライド部材２３Ｍと左側のローラ２４Ａが搭載されたロール設置部２１Ｂとの間隔Ｗｘと、スチールコード１０の右側で溝付きローラ２４Ｂが搭載された第２のスライド部材２３Ｎと左側のローラ２４Ｂが搭載されたロール設置部２１Ｂとの間隔Ｗｙとを別個に設定する噛みこみ量調整手段２５を設けて、上記平ローラ２４Ａの噛み込量を大きくし、上記溝付きローラ２４Ｂの噛み込量を小さくするようにしたので、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを確実に得ることができる。 Thus, according to this best mode, the flat roller group 24X composed of the three flat rollers 24A is arranged on the incoming line side P of the steel cord 10, and the steel cord 10 is repeatedly bent so that the steel cord 10 The cross section is flattened, and a grooved roller group 24Y composed of six grooved rollers 24B is arranged on the outgoing line side Q at the subsequent stage so as to correct the straightness of the flattened steel cord 10. Therefore, the flatness of the steel cord 10 can be adjusted in a wide range, and a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained.
Further, the distance Wx between the first slide member 23M on which the flat roller 24A is mounted on the right side of the steel cord 10 and the roll installation portion 21B on which the left roller 24A is mounted, and the grooved roller 24B on the right side of the steel cord 10 Is provided with a biting amount adjusting means 25 for separately setting an interval Wy between the second slide member 23N on which the roller is mounted and the roll installing portion 21B on which the left roller 24B is mounted. Since the amount is increased and the biting amount of the grooved roller 24B is reduced, a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained with certainty.

なお、上記最良の形態では、平ローラ群２４Ｘのローラ数を３つとし、溝付きローラ群２４Ｙのローラ数を６つとしたが、これに限るものではなく、ローラ数は、スチールコード１０の種類や扁平度Ｍの大きさなどにより、適宜決定すればよい。
また、上記例では、調整ボルト２５ａ，２５ｂの押し込み量により噛みこみ量を調整する噛みこみ量調整手段２５を設けたが、油圧シリンダ装置など他の手段を用いて噛みこみ量を調整するようにしてもよい。 In the above-described best mode, the number of rollers of the flat roller group 24X is three and the number of rollers of the grooved roller group 24Y is six. However, the number of rollers is not limited to this, and the number of rollers is the type of the steel cord 10. Or the magnitude of the flatness M may be determined as appropriate.
In the above example, the engagement amount adjusting means 25 for adjusting the engagement amount by adjusting the pushing amount of the adjusting bolts 25a and 25b is provided. However, the engagement amount is adjusted by using other means such as a hydraulic cylinder device. May be.

図１，２に示した扁平化装置を用いて、図５に示すような、２無撚り×φ０．３８＋８×０．３４φの扁平コードを作製し、その扁平度と真直性とを測定した結果を以下の表１に示す。

Figure 2009114583
本発明の扁平コードは、Ｗｘ＜Ｗｙとして作製したものである。
比較例の扁平コードは、Ｗｘ＝Ｗｙとして作製したものである。
表１から明らかなように、本発明による扁平化装置で作製したスチールコードは高い扁平度を有するとともに真直性にも優れていることが確認された。 Using the flattening apparatus shown in FIGS. 1 and 2, a flat cord of 2 untwisted × φ0.38 + 8 × 0.34φ as shown in FIG. 5 was produced, and the flatness and straightness were measured. Is shown in Table 1 below.
Figure 2009114583
 The flat cord of the present invention is manufactured as Wx <Wy.
The flat cord of the comparative example is manufactured with Wx = Wy.
As is clear from Table 1, it was confirmed that the steel cord produced by the flattening apparatus according to the present invention has high flatness and excellent straightness.

本発明によれば、広い範囲の扁平度を有するスチールコードを製造することができるとともに、真直性にも優れた扁平断面を有するゴム物品補強用スチールコードを得ることができるので、これを空気入りタイヤなどベルトやプライなどに適応すれば、空気入りタイヤの品質を向上させることができる。   According to the present invention, a steel cord having a wide range of flatness can be produced, and a steel cord for reinforcing rubber articles having a flat cross section excellent in straightness can be obtained. By adapting to tires such as belts and plies, the quality of pneumatic tires can be improved.

本発明の最良の形態に関わる扁平化装置の概要を示す平面図である。It is a top view which shows the outline | summary of the flattening apparatus in connection with the best form of this invention. 本最良の形態に関わる扁平化装置の概要を示す斜視図である。It is a perspective view which shows the outline | summary of the flattening apparatus in connection with this best form. スチールコードの断面を示す図である。It is a figure which shows the cross section of a steel cord. 従来の扁平断面を有するスチールコードの製造方法を示す図である。It is a figure which shows the manufacturing method of the steel cord which has the conventional flat cross section. 扁平化処理におけるたわみ率を説明するための図である。It is a figure for demonstrating the deflection rate in a flattening process.

符号の説明Explanation of symbols

１０ スチールコード、２０ 扁平化装置、２１ 基台、２１Ａ ベース部、
２１Ｂ ロール設置部、２１Ｃ 段差部、２１ａ ロール設置部の上面、
２１ｂ 基台の側面、２２Ｍ，２２Ｎ レール部材、２３Ｍ 第１のスライド部材、
２３Ｎ 第２のスライド部材、２３ａ 第１のスライド部材の上面、
２３ｂ 第２のスライド部材の上面、２４Ａ 平ローラ、２４Ｂ 溝付きローラ、
２４Ｘ 平ローラ群、２４Ｙ 溝付きローラ群、２５ 噛みこみ量調整手段、
２５ａ、２５ｂ 調整ボルト、２５ｃ 雌ねじ部、２５ｄ 固定坂、Ｐ 入線側、
Ｑ 出線側。 10 steel cord, 20 flattening device, 21 base, 21A base,
21B Roll installation part, 21C Step part, 21a Upper surface of roll installation part,
21b Side surface of base, 22M, 22N rail member, 23M first slide member,
23N second slide member, 23a upper surface of the first slide member,
23b The upper surface of the second slide member, 24A flat roller, 24B grooved roller,
24X flat roller group, 24Y grooved roller group, 25 engagement amount adjusting means,
25a, 25b Adjustment bolt, 25c Female thread, 25d Fixed slope, P Inlet side,
Q Outlet side.

Claims (3)

ゴムが被覆されたスチールフィラメントを３本以上撚り合わせて成るスチールコードを上記スチールコードの通過方向と直交する方向から挟むように、かつ、その位置が上記スチールコードの通過方向にずれて配置された複数のローラを備えた扁平化装置に上記スチールコードを入線させ、上記スチールコードを上記ローラの間を通過させながら、上記各ローラを所定の噛み量で上記スチールコードに接触させて、上記スチールコードに繰り返し曲げを与え、上記スチールコードの断面を扁平化する扁平断面を有するゴム物品用スチールコードの製造方法において、上記スチールコードの入線側に配置される連続する少なくとも３個のローラとして、円周表面が平坦である平ローラを用いて上記スチールコードの断面を扁平化するとともに、上記平ローラの後段に、円周表面の中央部に上記円周に沿った溝部が設けられた溝付きローラを少なくとも３個配置して、上記平ローラによって断面が扁平化されたスチールコードの真直性を矯正するようにしたことを特徴とする扁平断面を有するゴム物品用スチールコードの製造方法。   The steel cord formed by twisting three or more steel filaments coated with rubber is sandwiched from the direction perpendicular to the passing direction of the steel cord, and the position is shifted in the passing direction of the steel cord. The steel cord is inserted into a flattening device having a plurality of rollers, and the steel cord is brought into contact with the steel cord with a predetermined amount of engagement while passing the steel cord between the rollers. In the method of manufacturing a steel cord for a rubber article having a flat cross section that is repeatedly bent and flattened the cross section of the steel cord, at least three continuous rollers arranged on the wire entry side of the steel cord, While flattening the cross section of the steel cord using a flat roller with a flat surface, At least three grooved rollers provided with grooves along the circumference at the center of the circumferential surface are arranged at the rear stage of the flat roller, and the straightness of the steel cord whose cross section is flattened by the flat roller. A method for producing a steel cord for rubber articles having a flat cross section characterized by correcting the property. ゴムが被覆されたスチールフィラメントを３本以上撚り合わせて成るスチールコードを、上記スチールコードの通過方向と直交する方向から挟むように、かつ、その位置が上記スチールコードの通過方向にずれて配置された複数のローラを備え、上記スチールコードを上記ローラの間を通過させながら、上記各ローラを所定の噛み量で上記スチールコードに接触させて、上記スチールコードに繰り返し曲げを与え、上記スチールコードの断面を扁平化するゴム物品用スチールコードの扁平化装置であって、上記スチールコードの入線側に連続して配置される円周表面が平坦である少なくとも３個の平ローラから成るローラ群と、これらの平ローラ群の後段で、上記スチールコードの出線側に連続して配置される少なくとも３個の、円周表面の中央部に上記円周に沿った溝部が設けられた溝付きローラから成る溝付きローラ群とを備えたことを特徴とするゴム物品用スチールコードの扁平化装置。   A steel cord formed by twisting three or more steel filaments coated with rubber is sandwiched from a direction perpendicular to the passing direction of the steel cord, and the position is shifted in the passing direction of the steel cord. A plurality of rollers, and while passing the steel cord between the rollers, the rollers are brought into contact with the steel cord at a predetermined biting amount, the steel cord is repeatedly bent, and the steel cord A flattening device for a steel cord for a rubber article for flattening a cross section, the roller group comprising at least three flat rollers having a flat circumferential surface arranged continuously on the incoming line side of the steel cord, After these flat rollers, at least three circumferential surfaces arranged continuously on the outgoing side of the steel cord Central portion flattening device of the rubber article for a steel cord, characterized in that a grooved roller groups grooves along the circumference consist of grooved rollers provided. 上記平ローラ群のローラの噛み込み量と、上記溝付きローラ群のローラの噛みこみ量とが独立に設定可能であることを特徴とする請求項２に記載のゴム物品用スチールコードの扁平化装置。   The flattening of the steel cord for rubber articles according to claim 2, wherein the amount of engagement of the rollers of the flat roller group and the amount of engagement of the rollers of the grooved roller group can be set independently. apparatus.
JP2007288655A 2007-11-06 2007-11-06 Manufacturing method of steel cord for rubber article having flat cross section and flattening device for steel cord for rubber article Expired - Fee Related JP5014955B2 (en)

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