JPH06306784A - Steel cord, its production and tire using the same - Google Patents
Steel cord, its production and tire using the sameInfo
- Publication number
- JPH06306784A JPH06306784A JP5116537A JP11653793A JPH06306784A JP H06306784 A JPH06306784 A JP H06306784A JP 5116537 A JP5116537 A JP 5116537A JP 11653793 A JP11653793 A JP 11653793A JP H06306784 A JPH06306784 A JP H06306784A
- Authority
- JP
- Japan
- Prior art keywords
- code
- cord
- metal
- steel cord
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- 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
- D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
- D07B1/0653—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires in the core
-
- 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
- D07B2201/2047—Cores
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2059—Cores characterised by their structure comprising wires
- D07B2201/206—Cores characterised by their structure comprising wires arranged parallel to the axis
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/20—Type of machine
- D07B2207/207—Sequential double twisting devices
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/20—Type of machine
- D07B2207/207—Sequential double twisting devices
- D07B2207/208—Sequential double twisting devices characterised by at least partially unwinding the twist of the upstream double twisting step
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/20—Type of machine
- D07B2207/209—Tubular strander
Landscapes
- Ropes Or Cables (AREA)
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、タイヤ等の補強用スチ
−ルコ−ドに関し、詳しくは２＋３構造のスチ−ルコ−
ドであって、制御されたコ−ドト−ションと優れた耐疲
労性を有するスチ−ルコ−ド及びその製法に係るもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing steel cord for tires and the like, and more particularly to a steel cord having a 2 + 3 structure.
The present invention relates to a steel cord having a controlled code motion and excellent fatigue resistance, and a method for manufacturing the steel cord.
【０００２】[0002]
【従来の技術】タイヤの補強材として用いられるスチ−
ルコ−ドは、タイヤ製造のカレンダ−工程のおいて平行
に引き揃えられ、シ−ト状のゴムで被覆させてゴムとの
複合体（以下トリ−トという）とし、続いて裁断工程に
て上記トリ−トを一定の間隔でコ−ド長手方向に対し斜
めに裁断してトリ−ト部材を得、この裁断されたトリ−
ト部材の側面同士を接合し、トリ−トの長さ方向に対し
て斜めにスチ−ルコ−ドが配置された帯状のトリ−ト材
としてタイヤベルト部に用いられる。BACKGROUND OF THE INVENTION Steel used as a reinforcing material for tires.
The rucodes are aligned in parallel during the calendar process of tire production, covered with a sheet-like rubber to form a composite with rubber (hereinafter referred to as a treat), and then in a cutting process. The above-mentioned triat is cut at a constant interval obliquely with respect to the longitudinal direction of the code to obtain a triat member, and this triat is cut.
It is used for a tire belt portion as a belt-shaped trilate material in which side surfaces of a toe member are joined to each other and a steel code is obliquely arranged with respect to the longitudinal direction of the trite member.
【０００３】ここで用いられるスチ−ルコ−ドは、通常
は残留ト−ションを有しているため、裁断時にトリ−ト
端部でのコ−ドの拘束が解放されると、コ−ド断面円周
方向に回転しようとする力を発生し、その結果、トリ−
ト部材端部の跳ね上がりが起こる。このような端部の跳
ね上がった形状のトリ−ト部材は、次の接合工程におい
て側面同士を接合できないという問題点がある。そし
て、この跳ね上がりの程度が大きくない場合は、手動に
より跳ね上がりを矯正して接合することができるが、手
動で矯正する手間がかかるという問題点と、接合部（矯
正部）のコ−ド打ち込みの乱れが避けられず、外観不良
及びこれに起因するタイヤベルト部の耐久性が低下する
という問題点がある。The steel cord used here usually has a residual torsion, so that when the cord is released from the restraint at the end of the treat during cutting, the cord is released. A force that tries to rotate in the circumferential direction of the cross section is generated, and as a result,
Bounce of the end of the belt member occurs. Such a baffle-shaped treat member has a problem that the side faces cannot be joined together in the next joining process. If the degree of the bounce is not large, the bounce can be manually corrected and joined, but there is the problem that it takes time and effort to correct the bounce manually, and the cord driving of the joint (correction portion) is required. Disturbance is unavoidable, and there is a problem in that the appearance is poor and the durability of the tire belt portion is deteriorated.
【０００４】さて、通常はタイヤ補強用スチ−ルコ−ド
では、特に乗用車用タイヤのベルト部には１×ｎ構造の
クロ−ズタイプ若しくはオ−プンタイプのコ−ド、又は
ｍ＋ｎ構造のコ−ドが従来から用いられている。この後
者のｍ＋ｎ構造のコ−ドは、クロ−ズタイプでもゴム浸
透性に優れるという利点があり、又、従来より生産性の
観点からバンチャ−タイプの撚線機で製造されてきた。Generally, in a tire-reinforcing steel cord, particularly in a belt portion of a passenger car tire, a cross type or open type code of 1 × n structure or a code of m + n structure. Has been used conventionally. The latter code of m + n structure has an advantage that it is excellent in rubber permeability even in a cloth type, and has been manufactured by a buncher type twisting machine from the viewpoint of productivity from the past.
【０００５】バンチャ−タイプの撚線機を用いて作製さ
れるスチ−ルコ−ドは、コ−ドを構成する金属素線に捻
りが加わるため、高いコ−ドト−ションを有することと
なり、このコ−ドト−ションを低減する方法として、従
来から図１に示すヒステリシスル−プの理論に基づき、
図２に示すようなタ−ビン５を用いてきた。図１は、コ
−ドのインプットト−ションとアウトプットト−ション
との関係を示すヒステリシスル−プであり、図２は、バ
ンチャ−タイプの撚線機の概念図を示す。図１中、ａ〜
ｅは図２にて示すバンチャ−タイプ撚線機の各ステップ
でのヒステリシスを示す。A steel cord manufactured by using a buncher type twisting machine has a high cord totion because the metal wire constituting the cord is twisted. As a method of reducing the coding, conventionally, based on the theory of the hysteresis loop shown in FIG. 1,
A turbine 5 as shown in FIG. 2 has been used. FIG. 1 is a hysteresis loop showing the relationship between the input and output directions of the code, and FIG. 2 is a conceptual diagram of a buncher type twisting machine. In FIG. 1, a to
e shows the hysteresis at each step of the buncher type twisting machine shown in FIG.
【０００６】このｍ＋ｎ構造のコ−ドにおいては、相互
に撚り合わせない金属素線ｍの巻出しをバンチャ−フラ
イヤ−の外部に設置し、他の撚り合わせる金属素線ｎの
巻出しをフライヤ−内部に設置することでｍ＋ｎ構造を
得ることとなる。図２にあって、金属素線ｍはフライヤ
−外のボビン１より巻き出され、第１フライヤ−２をも
って撚られ、次いで、フライヤ−内のボビン３より巻き
出される金属素線ｎと共に第２フライヤ−４にて撚り合
わせることで、金属素線ｍは撚りが戻され、一方、金属
素線ｎを撚り合わせることでｍ＋ｎ構造とし、タ−ビン
５により撚りがセットされ、ボビン７に巻き取られるこ
ととなる。In the code of the m + n structure, the unwinding of the metal element wires m which are not twisted to each other is set outside the buncher flyer, and the unwinding of the other metal element wires n to be twisted is applied to the flyer. By installing it inside, an m + n structure will be obtained. In FIG. 2, the metal wire m is unwound from the bobbin 1 outside the flyer, twisted with the first flyer-2, and then the second metal wire n is unwound from the bobbin 3 inside the flyer. By twisting with the flyer-4, the twist of the metal element wire m is returned, while twisting the metal element wires n into an m + n structure, the twist is set by the turbine 5 and wound on the bobbin 7. Will be done.
【０００７】さて、この図の場合、バンチャ−フライヤ
−内部から巻出された金属素線ｎは、従来から知られて
いるヒステリシスル−プに従うが、バンチャ−フライヤ
−外部から巻出した金属素線ｍは、第１フライヤ−
（２）によって、最終コ−ドと逆方向で同ピッチに撚ら
れ、再び第２フライヤ−（４）によりこの撚りが解かれ
るため、ヒステリシスル−プは図１に示すような形状と
なる。図中、Ａはバンチャ−フライヤ−内部から巻き出
された金属素線ｎのヒステリシスル−プであり、Ｂは外
部から巻き出された金属素線ｍのル−プである。In the case of this figure, the metal wire n wound from the inside of the buncher-flyer follows the conventionally known hysteresis loop, but the metal wire wound from the outside of the buncher-flyer is as follows. Line m is the first flyer
By (2), the final cord is twisted at the same pitch in the opposite direction, and this twist is unwound again by the second flyer (4), so that the hysteresis loop has a shape as shown in FIG. In the figure, A is the hysteresis loop of the metal wire n unwound from the inside of the buncher-flyer, and B is the loop of the metal wire m unwound from the outside.
【０００８】即ち、バンチャ−フライヤ−内部から巻出
した金属素線ｎと、外部から巻出した金属素線ｍにタ−
ビンを用い同じ捩り戻しを加えた場合、ヒステリシスル
−プは図１に示すようになり、バウシンガ−効果によっ
て、フライヤ−内部から巻出した金属素線ｎと外部から
巻出した金属素線ｍとでは、大きなト−ション差を有す
る。これは製造上の原理的問題であり、バンチャ−タイ
プの撚線機を用いてｍ＋ｎ構造のコ−ドを製造する限り
回避することは不可能である。That is, the metal wire n wound from the inside of the buncher flyer and the metal wire m wound from the outside are connected to each other.
When the same untwisting is applied using a bottle, the hysteresis loop becomes as shown in FIG. 1, and due to the Bauschinger effect, the metal wire n unwound from the inside of the flyer and the metal wire m unwound from the outside. There is a large difference in torsion between and. This is a principle problem in manufacturing and cannot be avoided as long as a cord of the m + n structure is manufactured by using a buncher type twisting machine.
【０００９】このため、バンチャ−タイプの撚線機を用
いて製造したｍ＋ｎコ−ドは、夫々大きく異なるト−シ
ョンを有した金属素線により構成されている。即ち、上
述の方法により製造したｍ＋ｎコ−ドト−ションは、夫
々大きく異なるト−ションを有する金属素線の釣り合い
により形成されているため、非常に不安定な状態であ
る。このため、コ−ドト−ションを安定させることが困
難であり、裁断工程においてトリ−トの端部が跳ね上が
るという問題が発生しやすい。Therefore, the m + n cords manufactured by using the buncher type twisting machine are composed of metal element wires having different torsions. That is, the m + n code tongue manufactured by the above-mentioned method is in a very unstable state because it is formed by the balance of the metal element wires having the torsions greatly different from each other. For this reason, it is difficult to stabilize the codetion, and the problem that the end portion of the treat jumps up during the cutting process easily occurs.
【００１０】又、上述理由によりｍ＋ｎコ−ドの金属素
線は夫々大きく異なるト−ションを有するため、フレア
を発生させ易く、カレンダ−工程での作業性も非常に悪
い。又、バンチャ−タイプで撚り合わせる場合、チュ−
ブラ−タイプに比べ加工量が多く、又、撚り合わせ時に
素線同士の接触が大きいため、金属素線に傷が入りやす
く疲労性が低下するという問題もあった。Further, for the above-mentioned reason, since the metal wires of m + n cords have different torsions, flare is likely to occur and workability in the calendering process is very poor. When twisting with a buncher type,
There is also a problem that the amount of processing is larger than that of the blur type and that the contact between strands during twisting is large, so that the metal strands are easily scratched and the fatigue property is reduced.
【００１１】[0011]
【発明が解決しようとする課題】この発明が解決しよう
とする課題は、コ−ドト−ションを大幅に低減し、耐疲
労性に優れた形態を有するｍ＋ｎ構造のコ−ドのうちの
代表的な２＋３構造のコ−ド及びその製法並びにそのコ
−ドを用いたタイヤを提供することである。The problem to be solved by the present invention is typical of the codes of the m + n structure having a form that has a significantly reduced codetion and is excellent in fatigue resistance. Another object of the present invention is to provide a code having a 2 + 3 structure, a method for producing the same, and a tire using the code.
【００１２】[0012]
【課題を解決するための手段】本発明の第１は、２＋３
構造のコ−ドであって、２を構成する金属素線の配置
が、コ−ド断面における当該金属素線の中心点を結ぶ線
の方向が、コ−ドの長さ方向で変化せず、かつ３を構成
する金属素線の配置が、コ−ド断面における当該金属素
線によって形成されるく字状の外接曲線が、コ−ドの長
さ方向で変化しない断面形状であることを特徴とするス
チ−ルコ−ドにかかるものである。ここで、２の型付け
率を３の型付け率より小さく（１以下）することで上述
の断面形状を得ることができる。又、チュ−ブラ−タイ
プの撚線機を用いて撚り合わせることで、金属素線に残
留ト−ションを有しない上述の２＋３構造のコ−ドであ
る。The first aspect of the present invention is 2 + 3.
The code of the structure is such that the arrangement of the metal element wires constituting 2 is such that the direction of the line connecting the center points of the metal element wires in the code section does not change in the length direction of the code. , And the arrangement of the metal wires constituting 3 is such that the V-shaped circumscribed curve formed by the metal wires in the code cross section has a cross-sectional shape that does not change in the length direction of the code. It is related to the characteristic steel code. Here, the above-mentioned cross-sectional shape can be obtained by making the molding ratio of 2 smaller than the molding ratio of 3 (1 or less). Further, the cord is of the above-mentioned 2 + 3 structure in which the metal wire has no residual torsion by twisting using a tuber type twisting machine.
【００１３】一方、本発明の第２は、チュ−ブラ−撚線
機を用いて撚合わせる２＋３構造のスチ−ルコ−ドの製
法であって、２を構成する金属素線の巻出しがチュ−ブ
ラ−の外側に設置され、３を構成する金属素線の巻出し
がチュ−ブラ−内にあり、次いで型付け治具で金属素線
を型付するにおいて、２を構成する金属素線の型付を３
を構成する金属素線の型付より小さくし、その後２と３
の両金属素線を撚り合わせるものである。ここで、２を
構成する金属素線にオイルを付着させることにより、よ
り均一な型付けを行うことができるものである。次い
で、撚合わされた２＋３構造コ−ドに高い張力を付加し
ながら真直性矯正ロ−ラ−群を通過させることを特徴と
するスチ−ルコ−ドの製法を提供するものである。On the other hand, the second aspect of the present invention is a method of manufacturing a steel cord having a 2 + 3 structure in which a metal wire for forming 2 is unwound by using a tuber twisting machine. -There is an unwinding of the metal element wire 3 which is installed on the outside of the bra and which constitutes the 3 inside the tuber, and then when the metal element wire is molded by a molding jig, Typed 3
It is made smaller than the type of the metal wire that composes, and then 2 and 3
The two metal wires are twisted together. Here, by making oil adhere to the metal element wires that form the element 2, more uniform patterning can be performed. Then, there is provided a method for manufacturing a steel cord, which comprises passing a straightness straightening roller group while applying a high tension to the twisted 2 + 3 structure cord.
【００１４】又、本発明の第３は上記した特徴を有する
２＋３構造のスチ−ルコ−ドをゴム中に埋設した補強材
としたタイヤであり、これを特にタイヤのベルト層に適
用したものである。A third aspect of the present invention is a tire having a steel cord having a 2 + 3 structure having the above-mentioned characteristics as a reinforcing material embedded in rubber, which is particularly applied to a belt layer of the tire. is there.
【００１５】[0015]
【作用】本発明の第１であるコ−ドは、チュ−ブラ−タ
イプの撚線機を用いてｍ＋ｎ構造のコ−ドを作製するこ
とで、金属素線に入る傷を低減させることができ、又、
金属素線に捩りが加わらないのでコ−ドト−ションをよ
り低減させることができる。The code according to the first aspect of the present invention is capable of reducing scratches entering a metal wire by producing a code of m + n structure using a tuber type twisting machine. Yes, again
Since no twist is applied to the metal element wire, it is possible to further reduce the coding.
【００１６】チュ−ブラ−タイプの撚線機で、ｍ＋ｎ構
造のような断面が左右対称でないコ−ドを撚り合わせる
時、コ−ドの断面形態においてｍ又はｎの金属素線の配
置を正常な箇所にすることができず、長さ方向で不均一
な配置になり、金属素線の入れ替わり等が起こるため、
正常なｍ＋ｎ構造の形状を有するコ−ドを得ることがで
きないが、この発明においては、ｍの金属素線の型付け
をｎのそれより小さくしたので、ｍ及びｎの各々の金属
素線の配置を長さ方向に安定して正常な位置に保つこと
ができることとなったものである。In a tuber type twisting machine, when twisting cords whose cross sections such as the m + n structure are not symmetrical to each other, the metal element wires of m or n are normally arranged in the cross sectional shape of the cords. It is not possible to place it in such a place, it becomes unevenly arranged in the length direction, and the exchange of metal wires occurs, so
Although it is not possible to obtain a code having a normal shape of m + n structure, in the present invention, since the metal wire of m is typed smaller than that of n, the arrangement of the metal wires of m and n is arranged. It is now possible to stably maintain the normal position in the longitudinal direction.
【００１７】そして、コ−ド断面においては、ｍに相当
する金属素線の配置が、コ−ド断面における２つの素線
の中心点を結ぶ線の方向がコ−ドの長さ方向で変化しな
いので、２本の素線の部分において真直性等のコ−ドの
形態的物理特性が優れる。従って、タイヤベルト部に埋
設された時、打ち込み間隔乱れが生じないのでタイヤの
ユニフォ−ミティ−が優れるものとなる。In the code section, the arrangement of the metal element wires corresponding to m is such that the direction of the line connecting the center points of the two element wires in the code section changes in the length direction of the code. Therefore, the morphological physical properties of the cord such as straightness are excellent in the two strands. Therefore, when embedded in the tire belt portion, the driving interval is not disturbed, and the uniformity of the tire is excellent.
【００１８】一方、３を構成する金属素線において、コ
−ド断面における３を構成する金属素線によって形成さ
れるく字状の外接曲線が、コ−ドの長さ方向で変化しな
いので、３の金属素線は正常な螺旋形態になり、個々の
金属素線３への張力負担を均一にでき、金属素線の一部
に応力が集中することがなく、又、２と３との金属素線
間に隙間を設けることができるので、バンチャ−撚りで
作製した隙間のないコンパクト型コ−ドに比べ、金属素
線同士の接触力が低減することとなり、タイヤ走行時の
耐久性が向上することになる。又、この発明にかかる撚
形状は、コ−ドの２及び３の金属素線のコ−ド断面にお
ける配置は、２の型付け率を３の型付け率より小さくす
ることで、得られる２の群と３の群との金属素線間に隙
間がもたらされ、コ−ド内へゴムが浸透して隙間をなく
すものであって、このため、タイヤが水分環境下におか
れても錆が発生することがない。On the other hand, in the metal element wire forming the code 3, the V-shaped circumscribed curve formed by the metal element wire forming the code 3 in the code cross section does not change in the length direction of the code. The metal wire of No. 3 has a normal spiral shape, the tension load on each metal wire 3 can be made uniform, and stress is not concentrated on a part of the metal wire. Since a gap can be provided between the metal strands, the contact force between the metal strands is reduced as compared with a compact type cord having no gap formed by buncher-twisting, and durability during tire running is reduced. Will be improved. Further, the twisted shape according to the present invention can be obtained by arranging the metal wires 2 and 3 of the cord in the code cross section by making the molding ratio of 2 smaller than the molding ratio of 3. A gap is created between the metal wires of the groups 3 and 3, and the rubber penetrates into the cord to eliminate the gap. Therefore, even if the tire is exposed to a moisture environment, rust does not occur. It never happens.
【００１９】[0019]
【実施例】以下、実施例に基づいて更に具体的に説明す
る。コ−ドを構成する金属素線は、ＪＩＳＧ・３５０６
に規定されたＳＷＲＨ８２Ａ又はそれに準ずるを原材料
の鋼材として用い、予め熱処理と伸線された抗張力が３
２０〜３３０ｋｇ／ｍｍ2 で、線径が０．２３ｍのもの
を用いた。作製したコ−ドは、２＋３構造で一定の撚り
ピッチで撚り合わせた。EXAMPLES Hereinafter, more detailed description will be given based on examples. The metal wires that make up the code are JISG 3506
Using SWRH82A specified in 1) or its equivalent as the raw material steel material, the pre-heat treatment and the drawn tensile strength are 3
A wire having a wire diameter of 20 to 330 kg / mm 2 and a wire diameter of 0.23 m was used. The produced cord was twisted with a constant twist pitch in a 2 + 3 structure.
【００２０】コ−ドの作製は、図３に示すようにチュ−
ブラ−タイプの撚線機１０を用い、ｍに当たる２本の金
属素線は、チュ−ブ１１の外側に設置された巻き出し装
置１２1 から巻き出され、集束治具１３で引き揃えら
れ、これをチュ−ブ外壁１４を通過させ、かつ２本の金
属素線を一つの型付け装置１５を通過させた後、３を構
成する金属素線と撚り合わせることとなる。３を構成す
る金属素線（ｎ）は、チュ−ブ内に設置された巻き出し
装置１２2から繰り出され、これをチュ−ブ外壁１４に
案内した後、個々の金属素線に対し個々の型付け装置１
６を通過させた後、２を構成する金属素線と撚り合わせ
たものである。撚り合わされた２＋２構造及び２＋３構
造のコ−ドは、真直性矯正ロ−ラ群１７を通過させた
後、巻き取り装置１９に巻き取られる。図４は本発明で
用いられる型付け装置の正面図である。As shown in FIG. 3, the cord is manufactured by using a tude.
Bra - using the type of stranding machine 10, two metal wires hitting the m, Ju - unwound from the feeding apparatus 12 1 is installed on the outside of the probe 11, aligned drawn by focusing jig 13, This is passed through the outer wall 14 of the tube, and two metal wires are passed through one molding device 15, and then twisted together with the metal wires forming part 3. Metal filaments constituting the 3 (n) is Ju - fed unwinding from the apparatus 12 2 is placed in the parts, which Ju - was guided to blanking the outer wall 14, of the individual to the individual metal wires Typing device 1
After passing 6 through, it is twisted with the metal element wire constituting 2. The twisted cords of the 2 + 2 structure and the 2 + 3 structure are passed through the straightening roller group 17 and then wound up by the winding device 19. FIG. 4 is a front view of the molding device used in the present invention.
【００２１】尚、実施例にかかるコ−ドは、２を構成す
る金属素線を集束治具１３の箇所においてオイリング装
置１８にてスピンドル油を塗布した。次に、千鳥足状に
配置された型付けピンからなる型付け装置１６の配置を
２と３とで異なる形状にし、２の型付け率を３の型付け
率より小さくした。又、２＋３構造に撚り合わせた後に
真直性矯正装置１７を通過させるに当たって、通過時の
引張テンションを付加（１５ｋｇ／本）して矯正した。In the cord according to the example, spindle oil was applied by the oiling device 18 to the metal jig forming the wire 2 at the position of the focusing jig 13. Next, the arrangement of the molding device 16 including the molding pins arranged in a zigzag pattern was changed between 2 and 3, and the molding ratio of 2 was made smaller than the molding ratio of 3. Further, after passing through the straightness straightening device 17 after being twisted into a 2 + 3 structure, a tensile tension at the time of passing was added (15 kg / piece) for straightening.
【００２２】（コ−ドの構造）図５は本発明のスチ−ル
コ−ドを示す側面図であり、特にコ−ド長さ方向で１／
４ピッチ分づつのコ−ド断面を観察した。即ち、コ−ド
の観察部位はＡ−Ａ線、Ｂ−Ｂ線、Ｃ−Ｃ線、Ｄ−Ｄ線
であり、以後はこれの繰り返しである。(Structure of Code) FIG. 5 is a side view showing the steel code of the present invention.
The code cross section was observed every 4 pitches. That is, the observed parts of the code are the AA line, the BB line, the CC line, and the DD line, and these are repeated thereafter.
【００２３】さて、図６に示すように、Ａ−Ａ線にあっ
て、２本の金属素線ｍは、上下方向に並んで位置してお
り、３本の金属素線ｎはく字状をなして金属素線ｍの直
上に位置している。Now, as shown in FIG. 6, in the AA line, the two metal wires m are located side by side in the vertical direction, and the three metal wires n are in the shape of a V-shape. And is located directly above the metal wire m.
【００２４】しかるに、図７で示すＢ−Ｂ線にあって
は、Ａ−Ａ線の位置より１／４ピッチ進んだ位置にあ
り、２本の金属素線ｍはその位置が変っても上下方向に
並んで位置することには変わりがない。一方、３本の金
属素線ｎは、く字状をなしてはいるが、これが９０度回
転し、金属素線ｍの右側に位置していることが分かる。On the other hand, in the line BB shown in FIG. 7, it is at a position which is a quarter pitch ahead of the position of the line AA, and the two metal element wires m are vertically moved even if the position is changed. There is no change in being located side by side in the direction. On the other hand, although the three metal wires n have a V shape, it turns out that they rotate 90 degrees and are located on the right side of the metal wire m.
【００２５】又、図８で示すＣ−Ｃ線は、Ｂ−Ｂ線の位
置より１／４ピッチだけ進んだ位置であり、２本の金属
素線ｍに対し、く字状の金属素線ｎが真下に位置するも
のである。The line C--C shown in FIG. 8 is a position which is advanced from the position of line B--B by 1/4 pitch, and is a V-shaped metal element wire with respect to two metal element wires m. n is located directly below.
【００２６】更に、図９で示すＤ−Ｄ線は、Ｃ−Ｃ線よ
り更に１／４ピッチ進んだ位置であり、金属素線ｍに対
して左側にく字状をなして位置することとなる。Further, the line D-D shown in FIG. 9 is a position which is further advanced by 1/4 pitch from the line C-C, and is located in the left side of the metal wire m in a V shape. Become.
【００２７】そして、Ｅ−Ｅ線における金属素線は図６
と同様となる。即ち、本発明のスチ−ルコ−ドは、各断
面において金属素線ｍ及び金属素線ｎはその位置は異に
するが、夫々の素線間での配列は同じであることが大き
な特徴となっている。The metal element line along the line EE is shown in FIG.
Is similar to. That is, in the steel cord of the present invention, the positions of the metal wires m and the metal wires n are different in each cross section, but the arrangement is the same between the respective wires. Has become.
【００２８】一方、図１０〜図１３で示したスチ−ルコ
−ドの断面は、特公平３−２３６７３号に基づくもので
あって、前記した図６〜図９と同様位置の断面図であ
る。しかるに、この従来例にあっては、２本の金属素線
ｍについてはその位置関係は変わらないが、３本の金属
素線ｎについてはく字状になったり直線状になったり大
きく変化することが分かる。On the other hand, the cross section of the steel cord shown in FIGS. 10 to 13 is based on JP-B-3-23673, and is a cross sectional view at the same position as in FIGS. 6 to 9 described above. . However, in this conventional example, the positional relationship of the two metal element wires m does not change, but the three metal element wires n have a V shape or a linear shape, which greatly changes. I understand.
【００２９】（コ−ドテスト）実施例１と２は、型付け
比率を変えた場合のコ−ドによる例であり、一方、従来
例１はバンチャ−撚線機による２＋３構造のコ−ドの例
である。又、実施例３はスピンドル油を塗布しないも
の、比較例１〜２は真直性矯正装置を通過させるに当た
って引張テンションを新たに付加しない（７〜８ｋｇ／
本）ものであり、型付け比率も異なっている例である。(Code Test) Examples 1 and 2 are examples of the code when the molding ratio is changed, while Conventional Example 1 is an example of the code of 2 + 3 structure by the buncher-twisting machine. Is. In addition, Example 3 does not apply spindle oil, and Comparative Examples 1 and 2 do not newly add tensile tension when passing through the straightness straightening device (7 to 8 kg /
This is an example in which the typing ratio is different.
【００３０】コ−ドのト−ションの測定は、リ−ルから
コ−ドをその端末を拘束した状態で６ｍ引き出し、次い
で、端末の拘束を開放した時のコ−ドの回転を測定して
評価した。ト−ションの値は、コ−ドが撚り締まる方向
を正の値として測定した。疲労性の評価は、ＪＩＳ規格
Ｌ１０１７に規定する圧縮曲疲労強さ試験に準じたベル
ト屈曲によって行った。又、跳ね上がりは裁断後のトリ
−トを水平な面に置いた時の端部の高さで測定した。結
果を表１にその製造条件と共に示す。The cord torsion is measured by pulling the cord out of the reel for 6 m with the terminal restrained, and then measuring the rotation of the cord when the terminal restraint is released. Evaluated. The torsion value was measured with a positive value in the direction in which the cord was twisted. Fatigue was evaluated by belt bending according to the compression bending fatigue strength test specified in JIS L1017. Also, the jumping up was measured by the height of the end portion when the cut treat was placed on a horizontal surface. The results are shown in Table 1 together with the production conditions.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１に示す通り、この発明の実施例にかか
るコ−ドは比較例に比べコ−ドト−ションが大幅に改良
され、トリ−トの跳ね上がりを低減し、金属素線表面の
傷を低減するものであって、耐疲労性に優れると共にカ
レンダ−工程での作業性が向上できる。As shown in Table 1, the code according to the example of the present invention has a significantly improved code tongue as compared with the comparative example, the jump of the trite is reduced, and the surface of the metal wire is scratched. And the workability in the calendar process can be improved.
【００３３】[0033]
【発明の効果】この発明に係るコ−ドは、従来のコ−ド
のように残留ト−ションを有さないので、トリ−ト裁断
時の端部の跳ね上がりをなくすことができ、又、２及び
３の撚形状の物理特性に優れると共に、２群と３群の金
属素線間に隙間を有するため、耐疲労性に優れ、かつ錆
の発生も抑制することができ工業上極めて有用である。Since the code according to the present invention has no residual torsion unlike the conventional code, it is possible to prevent the end portion from jumping up during the cutting of the treat, and Excellent in physical properties of the twisted shape of 2 and 3 and having a gap between the metal wires of the 2nd and 3rd groups, so that it has excellent fatigue resistance and can suppress the generation of rust. is there.
【図１】図１は、バンチャ−タイプの撚線機を用いて作
製されるスチ−ルコ−ドのコ−ドト−ションを示すヒス
テリシスル−プである。FIG. 1 is a hysteresis loop showing the code code of a steel cord produced by using a buncher type twisting machine.
【図２】図２は、バンチャ−タイプの撚線機の概念図を
示す。FIG. 2 shows a conceptual diagram of a buncher type twisting machine.
【図３】図３は、本発明で使用されるチュ−ブラ−タイ
プの撚線機の概念図である。FIG. 3 is a conceptual diagram of a tuber type twisting machine used in the present invention.
【図４】図４は、型付け治具の正面図である。FIG. 4 is a front view of a molding jig.
【図５】図５は、本発明のコ−ドの側面図である。FIG. 5 is a side view of the code of the present invention.
【図６】図６は、図５に示した本発明のコ−ドのＡ−Ａ
線での断面図である。FIG. 6 is an AA of the code of the present invention shown in FIG.
It is sectional drawing in a line.
【図７】図７は、図５に示した本発明のコ−ドのＢ−Ｂ
線での断面図である。7 is a BB of the code of the present invention shown in FIG.
It is sectional drawing in a line.
【図８】図８は、図５に示した本発明のコ−ドのＣ−Ｃ
線での断面図である。FIG. 8 is a CC of the code of the present invention shown in FIG.
It is sectional drawing in a line.
【図９】図９は、図５に示した本発明のコ−ドのＤ−Ｄ
線での断面図である。FIG. 9 is a DD of the code of the present invention shown in FIG.
It is sectional drawing in a line.
【図１０】図１０は、特公平３−２３６７３号による従
来のコ−ドの図６と同様位置の断面図である。FIG. 10 is a sectional view of a conventional code according to Japanese Examined Patent Publication No. 3-23673 at the same position as in FIG.
【図１１】図１１は、特公平３−２３６７３号による従
来のコ−ドの図７と同様位置の断面図である。11 is a sectional view of a conventional code according to Japanese Examined Patent Publication No. 3-23673 at the same position as in FIG. 7.
【図１２】図１２は、特公平３−２３６７３号による従
来のコ−ドの図８と同様位置の断面図である。FIG. 12 is a sectional view of a conventional code according to Japanese Patent Publication No. 3-23673 at the same position as in FIG.
【図１３】図１３は、特公平３−２３６７３号による従
来のコ−ドの図９と同様位置の断面図である。13 is a sectional view of a conventional code according to Japanese Examined Patent Publication No. 3-23673 at the same position as in FIG.
１０‥‥チュ−ブラ−タイプの撚線機、 １１‥‥チュ−ブ、 １２1 、１２2 ‥‥巻き出し装置、 １３‥‥集束治具、 １４‥‥チュ−ブ外壁、 １５、１６‥‥型付け装置、 １７‥‥真直性矯正装置（ロ−ラ群）、 １７1 、１７2 ‥‥張力付加ロ−ラ、 １８‥‥オイリング装置、 １９‥‥巻き取り装置、 ｍ‥‥金属素線、 ｎ‥‥金属素線。10 ... tuber type twisting machine, 11 ... tube, 12 1 , 12 2 ... unwinding device, 13 ... focusing jig, 14 ... tube outer wall, 15, 16 ...・ ・ ・ Molding device, 17 ・ ・ ・ Straightness straightening device (roller group), 17 1 , 17 2・ ・ ・ Tensioning roller, 18 ・ ・ ・ Oiling device, 19 ・ ・ ・ Winding device, m ・ ・ ・ Metal wire , N ... Metal wire.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 喜田 優樹 栃木県黒磯市下中野800 ブリヂストンベ カルトスチ−ルコ−ド株式会社栃木工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuki Kida 800 Shimotanakano, Kuroiso City, Tochigi Prefecture Bridgestone Bekato Steel Code Co., Ltd. Tochigi Plant
Claims (5)
する金属素線の配置が、コ−ド断面における当該金属素
線の中心点を結ぶ線の方向が、コ−ドの長さ方向で変化
せず、かつ３を構成する金属素線の配置が、コ−ド断面
における当該金属素線によって形成されるく字型の外接
曲線が、コ−ドの長さ方向で変化しない断面形状である
ことを特徴とするスチ−ルコ−ド。1. A code having a 2 + 3 structure, wherein the arrangement of the metal wires constituting 2 is such that the direction of a line connecting the center points of the metal wires in the code cross section is the length of the code. The arrangement of the metal wires constituting 3 does not change in the vertical direction, and the V-shaped circumscribed curve formed by the metal wires in the code cross section does not change in the length direction of the code. A steel cord having a sectional shape.
（１以下）ことを特徴とする請求項第１項記載のスチ−
ルコ−ド。2. The steel sheet according to claim 1, wherein the patterning rate of 2 is smaller than the patterning rate of 3 (1 or less).
Rukode.
とを特徴とする請求項１記載のスチ−ルコ−ド。3. The steel cord according to claim 1, wherein the metal wire has no residual torsion.
２＋３構造のスチ−ルコ−ドの製法であって、２を構成
する金属素線の巻出しがチュ−ブラ−の外側に設置さ
れ、３を構成する金属素線の巻出しがチュ−ブラ−内に
あり、型付け治具で金属素線を型付するにおいて、２を
構成する金属素線の型付を３を構成する金属素線の型付
より小さくし、その後２と３の両金属素線を撚り合わ
せ、次いで、撚合わされた２＋３構造コ−ドに高い張力
を付加しながら真直性矯正ロ−ラ−群を通過させること
を特徴とするスチ−ルコ−ドの製法。4. A method for manufacturing a steel cord having a 2 + 3 structure in which a twister twisting machine is used for twisting, and the unwinding of the metal element wires constituting 2 is set outside the tuber. In the tuber, the unwinding of the metal element wires constituting 3 is carried out, and when the metal element wires are molded by a molding jig, The wire is made smaller than the type of the wire, and then both the metal wires 2 and 3 are twisted and then passed through the straightness straightening roller group while applying high tension to the twisted 2 + 3 structural cord. A method for producing a steel cord, which is characterized in that
−ドを補強材としたことを特徴とするタイヤ。5. A tire characterized by using the steel cord according to any one of claims 1 to 3 as a reinforcing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653793A JP3180324B2 (en) | 1993-04-19 | 1993-04-19 | Steel code, method for producing the same, and tire using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653793A JP3180324B2 (en) | 1993-04-19 | 1993-04-19 | Steel code, method for producing the same, and tire using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06306784A true JPH06306784A (en) | 1994-11-01 |
| JP3180324B2 JP3180324B2 (en) | 2001-06-25 |
Family
ID=14689584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11653793A Expired - Fee Related JP3180324B2 (en) | 1993-04-19 | 1993-04-19 | Steel code, method for producing the same, and tire using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3180324B2 (en) |
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|---|---|---|---|---|
| JP2007063706A (en) * | 2005-08-31 | 2007-03-15 | Yokohama Rubber Co Ltd:The | Steel cord for rubber reinforcement |
| JP2010281009A (en) * | 2009-06-04 | 2010-12-16 | Bridgestone Corp | Method for producing steel cord |
| JP2011195998A (en) * | 2010-03-23 | 2011-10-06 | Bridgestone Corp | Method for producing steel cord |
| WO2012128372A1 (en) | 2011-03-24 | 2012-09-27 | 株式会社ブリヂストン | Steel cord for rubber article reinforcement and pneumatic radial tire using same |
| JP2013199193A (en) * | 2012-03-23 | 2013-10-03 | Bridgestone Corp | Pneumatic radial tire |
| JP2014025161A (en) * | 2012-07-26 | 2014-02-06 | Bridgestone Corp | Steel cord for reinforcing rubber article and pneumatic radial tire including the same |
| WO2015169521A1 (en) * | 2014-05-08 | 2015-11-12 | Nv Bekaert Sa | Steel cord with reduced residual torsions |
| WO2020173759A1 (en) * | 2019-02-26 | 2020-09-03 | Nv Bekaert Sa | A steel cord for rubber reinforcement |
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1993
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063706A (en) * | 2005-08-31 | 2007-03-15 | Yokohama Rubber Co Ltd:The | Steel cord for rubber reinforcement |
| JP2010281009A (en) * | 2009-06-04 | 2010-12-16 | Bridgestone Corp | Method for producing steel cord |
| JP2011195998A (en) * | 2010-03-23 | 2011-10-06 | Bridgestone Corp | Method for producing steel cord |
| US9637844B2 (en) | 2011-03-24 | 2017-05-02 | Bridgestone Corporation | Steel cord for rubber article reinforcement and pneumatic radial tire using same |
| WO2012128372A1 (en) | 2011-03-24 | 2012-09-27 | 株式会社ブリヂストン | Steel cord for rubber article reinforcement and pneumatic radial tire using same |
| JP2013199193A (en) * | 2012-03-23 | 2013-10-03 | Bridgestone Corp | Pneumatic radial tire |
| JP2014025161A (en) * | 2012-07-26 | 2014-02-06 | Bridgestone Corp | Steel cord for reinforcing rubber article and pneumatic radial tire including the same |
| WO2015169521A1 (en) * | 2014-05-08 | 2015-11-12 | Nv Bekaert Sa | Steel cord with reduced residual torsions |
| CN106460317A (en) * | 2014-05-08 | 2017-02-22 | 贝卡尔特公司 | Steel cord with reduced residual torsions |
| JP2017515008A (en) * | 2014-05-08 | 2017-06-08 | エン・ベー・ベカルト・ソシエテ・アノニムN.V. Bekaert S.A. | Steel cord with reduced residual twist |
| EA031220B1 (en) * | 2014-05-08 | 2018-12-28 | Нв Бекаэрт Са | Steel cord with reduced residual torsions |
| CN106460317B (en) * | 2014-05-08 | 2019-05-03 | 贝卡尔特公司 | The steel cord of remaining torsion with reduction |
| US10487448B2 (en) | 2014-05-08 | 2019-11-26 | Nv Bekaert Sa | Steel cord with reduced residual torsions |
| WO2020173759A1 (en) * | 2019-02-26 | 2020-09-03 | Nv Bekaert Sa | A steel cord for rubber reinforcement |
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| Publication number | Publication date |
|---|---|
| JP3180324B2 (en) | 2001-06-25 |
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