JP4656743B2 - Winding products of steel filament for tire reinforcement - Google Patents
Winding products of steel filament for tire reinforcement Download PDFInfo
- Publication number
- JP4656743B2 JP4656743B2 JP2001053797A JP2001053797A JP4656743B2 JP 4656743 B2 JP4656743 B2 JP 4656743B2 JP 2001053797 A JP2001053797 A JP 2001053797A JP 2001053797 A JP2001053797 A JP 2001053797A JP 4656743 B2 JP4656743 B2 JP 4656743B2
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- JP
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- Prior art keywords
- wire
- corrugation
- wires
- bobbin
- single 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H55/00—Wound packages of filamentary material
- B65H55/005—Wound packages of filamentary material with two or more filaments wound in parallel on the bobbin
-
- 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
-
- 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
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- Ropes Or Cables (AREA)
- Tires In General (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、自動車用タイヤの補強材である単一のスチールフィラメントの巻取製品に関する。
【０００２】
【従来の技術】
従来、この種の補強材には、細径スチール素線を複数本稠密に撚り合わせた、所謂スチールコードと称する撚鋼線が用いられている。上記スチールコードは一般に、スチール線材に鉛パテンチング等の熱処理と伸線加工とを繰り返し行った後、ブラスメッキを施し、さらに所定の線径まで伸線加工を行って素線とし、次いでこの素線を複数本撚り合わせることにより製造されている。
【０００３】
ところで、タイヤ補強材としての不可欠な要件は、必要な強度を有し、しかも優れた柔軟性を具備することである。上記スチールコードにあっては、その素線がナイロン、ポリエステル等の繊維素線に比べ強度面で優れるが、柔軟性に劣るため、複数本の素線を撚り合わせて柔軟性を向上しようとするものである。このため、撚り工程を要し、容易かつ安価に製造できないという問題がある。
【０００４】
また、タイヤが小石、縁石等に乗り上げた際、補強材であるスチールコードが破断することがあるため、この種の補強材としては、高い伸度を有し、耐衝撃吸収性に優れた補強材が望まれている。
【０００５】
上記事情に鑑み、現在撚り工程を要せず安価に製造でき、かつ高い伸度を有し、柔軟性に優れる単一フィラメント構造のタイヤ補強材を実用化することが考えられている。
【０００６】
単一フィラメント構造のタイヤ補強材（以下、「単線」ということもある）として、例えば特開昭４８−６３９６１号公報に単線を波状に加工成形したものが、また特開昭５０−４３５９号公報に単線を螺旋状に加工成形したものが、夫々開示されている。
【０００７】
先に提案された上記各公報に開示された補強材にあっては、単一フィラメント構造とすることにより撚り工程を省略し、また波状あるいは螺旋状の波形くせを加工成形することにより破断時伸びを大きくして柔軟性を向上することができる。
【発明が解決しようとする課題】
【０００８】
しかしながら、上記波形くせを有する単線は破断伸びが大きくなる分、低荷重での伸びも大きくならざるを得ない。この低荷重時伸びがあまり大きいと、タイヤ製造工程の一部であるカレンダー工程（補強材をゴムシートで挟み込む工程）において補強材の弛みを防止する目的で負荷される張力によって波形くせが伸びてしまう。この伸びた状態、すなわち元に戻ろうとする応力が作用した状態でゴムシートが成形されるため、仕上がったシートが折れ曲がるといったトラブルが発生する。
【０００９】
また、従来のスチールコードを単線に置き換える場合、タイヤの強度面から考えてスチールコードを構成する素線数と同数の単線をタイヤに埋め込む必要があり、これに伴う数百から数千にも及ぶボビン数の増加およびクリールスタンド（繰り出し装置）の増設といった膨大な設備投資が必要となる。この問題を解決する手段として、１ボビンに複数本の単線を巻き付けることが考えられているが、この複数本同時に巻かれたボビンから実際に波形くせを有する単線を引き出すと、単線同士が絡み合って引き出しができなくなったり、ひどい場合にはもつれて断線といったトラブルが発生する。このトラブルはタイヤ製造において大幅な作業性の低下を引き起こすものである。
【００１０】
発明者は上記問題を解決するべく鋭意研究を行った結果、柔軟性を損なうことなく、低荷重での伸びを抑えることができる最適な線径、引張強度および縦弾性係数の領域が存在することを見出し、しかもこの単線は複数本を撚り合わせずに同時に巻き付けても単線同士の絡み合いを生じることなく引き出せることを知見して本発明を完成した。
【００１１】
本発明は、波形くせを有する単線における上記問題を解決するためになされたもので、その課題は、柔軟性を損なうことなく低加重時の伸びを抑制したタイヤ補強用スチールフィラメントを提供すること、および複数本の単線を１つのボビンに巻き付けても、単線同士の絡み合いを生じることなく引き出しができるタイヤ補強用スチールフィラメントの巻取製品を提供することにある。
【００１２】
【課題を解決するための手段】
上記課題を解決するための発明は、長手に亘り略螺旋状あるいは略平面状の波形くせを有する単一のスチールフィラメントにおいて、線径が０．２５〜０．４５ｍｍで引張強度が２９００〜４０００Ｎ／mm2であり、かつ上記波形くせを施した後の縦弾性係数が１６３〜１８０ＧＰａであることを特徴とするスチールフィラメントを複数本撚り合わせることなく１つのボビンに巻き付けた巻取製品である。
【００１３】
ここで、縦弾性係数とは、単線に加えられた単純引張力と、引張りに伴い生じる歪みに対する比、すなわち単線の「伸びにくさ」を示す係数である。一般的には真っ直ぐな単線で得られる係数であるが、本発明においては、くせ付けされた単線での値を意味し、破断荷重の１０〜３０％の荷重負荷領域、すなわち単線の波形くせが伸びきって真っ直ぐとなる前の低荷重域で求められる値である。この縦弾性係数は単線の引張試験結果から求めることができる。
【００１４】
ところで、上記構成における数値限定は、各種実験の結果から導き出したものであり、線径を０．２５〜０．４５mmとしたのは、０．２５mm未満では充分な強力が得られないため、タイヤに埋め込む本数が多くなり、埋め込まれた各単線の間隔（埋め込みピッチ）が小さくなりすぎて隣り合う単線同士が接触し、フレッティング摩耗の原因となるためである。しかも剛性が低く、低荷重における伸長度が大きくなりすぎて、カレンダー工程における引き出し時の張力で容易に伸び、この伸びた状態でゴムに埋め込まれるため、タイヤの衝撃吸収性が低下することによる。また０．４５mmを越えると充分な柔軟性が得られず、タイヤの衝撃吸収性が低下するためである。
【００１５】
また、引張強度を２９００〜４０００Ｎ／mm2としたのは、２９００Ｎ／mm2未満では強力が小さすぎて、上記と同様の理由からフレッティング摩耗の原因となったり、衝撃吸収性が低下するためであり、また４０００Ｎ／mm2を越えると強力が高くなり過ぎ、伸線加工時の断線が多発するためである。
【００１６】
さらに、上記線径、引張強度の範囲において縦弾性係数を１６３〜１８０ＧＰａとすることで、柔軟性を損なうことなく低荷重時の伸びを抑制することができる。ちなみに、くせ付けしていない炭素鋼単線の縦弾性係数は２００〜２１０ＧＰａである。
【００１７】
そして、上記構成の単線を複数本撚り合わさずに同時に巻き付けたボビンから、単線を引き出しても、引き出し時の弛みを防止する目的で負荷される張力と波形くせのスプリング効果による弾性力とで素線同士が反発しあって絡み合いを防止することができる。
【００１８】
ところで、１ボビンに巻き付ける単線の本数は、２本又は３本が好ましい。これは３本を越えると線径、引張強度および縦弾性係数を上記構成範囲内においても単線同士の絡み合いが発生しやすくなるからである。
【００１９】
上記構成において、単線に施す略螺旋状の波形くせとは、横断面の見かけの形状が円だけではなく、楕円やトラック形状も含む。
【００２０】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【００２１】
図１は、本発明の実施の一形態を示す単線の概略平面図である。
【００２２】
図１に示す単線１は、線径が０．２５〜０．４５mm、引張強度が２９００〜４０００Ｎ／mm２で、長手方向に略螺旋状の波形くせを有するものである。この波形くせを有する状態での縦弾性係数は１６３〜１８０ＧＰａである。
【００２３】
縦弾性係数は、線径、引張強度あるいはくせ付けピッチ（図１中のａ）や、見かけの外径（図１中のｂ）あるいは波高で特定される波形くせの形状によって調整することができる。
【００２４】
図２は、本発明の実施の一形態を示すもので、図１に示す単線１を２本巻き付けたボビン２から単線１、１を同時に引き出している状態を示す概略斜視図である。
【００２５】
ところで、複数本の単線を１つのボビンに巻き付ける手段としては、複数本の単線を同時に伸線できる伸線機で所望の線径に伸線した後、伸線機と巻取機の間に設けたくせ付け装置で波形くせを施して、１つのボビンに同時に巻き取る仕方と、シングル伸線機により１本づつ伸線し、それぞれに波形くせを施して同時に巻き取る仕方がある。このシングル伸線機によるときは、くせ付けを別工程で行ってもよい。
【００２６】
【実施例】
次に本発明の実施例を比較例と比較し具体的に説明する。
【００２７】
鋼種がＪＩＳにおけるＳＷＲＳ８２Ａ相当である線径５．５mmの線材に、パテンチング、伸線加工を繰り返して、表面にブラスメッキを施した後、さらに伸線加工して線径０．２５〜０．４５mmに仕上げた後、螺旋状の波形くせを施した数種類の単線を製造した。そしてこれらを１本づつボビンに巻き取った。
【００２８】
単線の製造に当たっては、線径と引張強度および螺旋状の波形くせの見かけの外径及びピッチを種々組み合わせて、本発明の条件を満たす実施例の単線と本発明の条件から外れた比較例の単線とを製造した。ただし、線径及び引張強度は本発明の構成要件の範囲内とした。
【００２９】
続いて、上記単線を実際にボビンから引き出してゴムシートに挟み込み、シートの曲がりを観察した。
【００３０】
次に、上記ブラスメッキ後の線材を、２本を同時に伸線できるダブル伸線機にて線径０．２５〜０．４５mmまで伸線加工した後、螺旋状の波形くせを施し、この２本の単線を１つのボビンに同時に巻き取って巻取製品を得た。
【００３１】
続いて、この巻取製品から２本の単線を、カレンダー工程における標準的な速度と張力で同時に引き出し、それらを引き離したときの単線同士の絡み合いの発生有無を比較した。その結果を表１に示す。なお、表中の「本数」はボビンに巻き付けた単線の本数を示し、「絡み合い有無」の欄における○は絡み合いが発生しなかったもの、×は発生したものを示す。
【００３２】
【表１】
なお、単線に略螺旋状の波形くせを施す手段としては、特公昭６３−６３２９３号公報に示されるように、供給される単線を軸心として回転するくせ付け装置で以て一定の螺旋状のくせ付けをする仕方がある。
また、略平面上の波形くせを施す手段としては、上記螺旋状の波形くせを施した後ローラ等で押圧して得る仕方や、歯車等に噛み込ませる仕方がある。
【００３４】
本発明および比較例の単線のくせ付けは、高速回転するくせ付け装置上に設けた３本のピン間に単線を通して行った。波形くせの見かけの外径およびピッチの調整は、くせ付けピンの径や間隔、押し込み程度や単線の張力並びにくせ付け装置の回転数を種々選択して決定した。
【００３５】
本発明の単線は、ゴムシートに挟み込んでもシートの曲がりが発生せず、また表１から明らかなように、本発明の単線を複数本同時に巻き付けたボビンから引き出しても単線同士の絡み合いが発生しないことが確認された。
【００３６】
また、他の鋼種および略平面状の波形くせにおいても同様の効果が得られることも確認した。
【００３７】
【発明の効果】
本発明の単線は、波形くせを有するので柔軟性に優れ、しかも線径、引張強度および縦弾性係数を特定したので、低荷重時の伸びが小さく、カレンダー工程において単線に負荷される張力による伸びを小さく抑えることができる。よってゴム中における単線の元に戻ろうとする応力が小さいので仕上がったゴムシートが折れ曲がることがない。
また、本発明の単線を１つのボビンに複数本同時に巻き付けた巻取製品は、単線同士の絡み合いや絡み合いに起因する断線を生じることなく引き出すことができ、タイヤ製造時の作業性の低下を防止することができる。さらに、ボビン数の増加およびクリールスタンドの増設が不要で、それに伴う設置面積の増加も防げるので設備投資することなく、タイヤの補強用として単線の実用化が図れる。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示す単線の概略平面図である。
【図２】本発明の実施の一形態を示すもので、ボビンから単線を引き出している状態を示す概略斜視図である。
【符号の説明】
１ 単線
２ ボビン
ａ くせピッチ
ｂ 見かけの外径又は波高[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wound product of a single steel filament , which is a reinforcing material for automobile tires.
[0002]
[Prior art]
Conventionally, a stranded steel wire called a so-called steel cord in which a plurality of small diameter steel wires are densely twisted together is used for this type of reinforcing material. The steel cord is generally subjected to heat treatment such as lead patenting and wire drawing on a steel wire, followed by brass plating, further drawing to a predetermined wire diameter to obtain a wire, and then this wire It is manufactured by twisting a plurality of wires.
[0003]
By the way, an indispensable requirement as a tire reinforcing material is to have necessary strength and excellent flexibility. In the above steel cord, the strands are superior in strength compared to fiber strands such as nylon and polyester, but because they are inferior in flexibility, they try to improve flexibility by twisting multiple strands. Is. For this reason, there exists a problem that a twist process is required and cannot be manufactured easily and inexpensively.
[0004]
In addition, when the tire rides on pebbles, curbs, etc., the steel cord that is the reinforcing material may break, so this type of reinforcing material has high elongation and is excellent in shock absorption A material is desired.
[0005]
In view of the above circumstances, it is currently considered to put into practical use a tire reinforcement material having a single filament structure that can be manufactured at low cost without requiring a twisting process, has high elongation, and is excellent in flexibility.
[0006]
As a tire reinforcing material having a single filament structure (hereinafter sometimes referred to as “single wire”), for example, a single wire processed into a wave shape in Japanese Patent Laid-Open No. 48-63961, or Japanese Patent Laid-Open No. 50-4359 is disclosed. Further, a single wire processed into a spiral shape is disclosed.
[0007]
In the reinforcing materials disclosed in the above-mentioned respective publications, the twisting process is omitted by adopting a single filament structure, and the elongation at break is achieved by processing and forming a wavy or helical corrugation. To increase flexibility.
[Problems to be solved by the invention]
[0008]
However, the single wire having the corrugation is inevitably increased in elongation at low load as the elongation at break increases. If this elongation at low load is too large, the wrinkle will be stretched by the tension applied to prevent loosening of the reinforcing material in the calendar process (the process of sandwiching the reinforcing material with a rubber sheet), which is part of the tire manufacturing process. End up. Since the rubber sheet is molded in this stretched state, that is, in a state where a stress for returning to the original state is applied, a trouble that the finished sheet is bent occurs.
[0009]
In addition, when replacing the conventional steel cord with a single wire, it is necessary to embed the same number of single wires as the number of wires constituting the steel cord in consideration of the strength of the tire, and the accompanying hundreds to thousands Enormous capital investment is required such as an increase in the number of bobbins and an additional creel stand (feeding device). As a means to solve this problem, it is considered that a plurality of single wires are wound around one bobbin. However, when a single wire having a corrugation is actually pulled out from the bobbin wound at the same time, the single wires are intertwined with each other. If it becomes impossible to pull out or is severe, troubles such as tangling and disconnection occur. This trouble causes a significant decrease in workability in tire manufacture.
[0010]
The inventor has conducted extensive research to solve the above problems, and as a result, there are areas of optimum wire diameter, tensile strength, and longitudinal elastic modulus that can suppress elongation under low load without impairing flexibility. In addition, the inventors have found that even if a single wire is wound simultaneously without twisting a plurality of wires, the present invention has been completed.
[0011]
The present invention was made in order to solve the above-mentioned problem in a single wire having a corrugation, and the task is to provide a steel filament for tire reinforcement that suppresses elongation at low load without impairing flexibility, Another object of the present invention is to provide a tire reinforcing steel filament winding product that can be pulled out without causing tangling of single wires even when a plurality of single wires are wound around one bobbin.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a single steel filament having a substantially spiral or substantially planar corrugation over its length, and has a wire diameter of 0.25 to 0.45 mm and a tensile strength of 2900 to 4000 N / a mm 2, and a winding product wound around the one bobbin without aligning the steel filaments, characterized in that the modulus of longitudinal elasticity after being subjected to the waveform habit is 163 ～180GPa plural twisting.
[0013]
Here, the longitudinal elastic modulus is a coefficient indicating the ratio of the simple tensile force applied to the single wire and the strain caused by the tension, that is, the “hardness of elongation” of the single wire. Generally, it is a coefficient obtained with a straight single wire, but in the present invention, it means a value with a single wire attached, and a load load region of 10 to 30% of the breaking load, that is, a single wire corrugation. It is a value obtained in a low load region before it is fully stretched and straightened. This longitudinal elastic modulus can be obtained from the tensile test result of a single wire.
[0014]
By the way, the numerical limitation in the above configuration is derived from the results of various experiments, and the wire diameter is set to 0.25 to 0.45 mm because sufficient strength cannot be obtained if the wire diameter is less than 0.25 mm. This is because the number of embedded single wires increases, the interval between the embedded single wires (embedding pitch) becomes too small, and adjacent single wires come into contact with each other, causing fretting wear. In addition, since the rigidity is low and the degree of elongation at low load becomes too large, it is easily stretched by the tension at the time of drawing in the calendar process, and is embedded in the rubber in this stretched state, so that the impact absorbability of the tire is lowered. Further, if it exceeds 0.45 mm, sufficient flexibility cannot be obtained, and the impact absorption of the tire is lowered.
[0015]
In addition, the tensile strength is set to 2900 to 4000 N / mm 2 because the strength is too low at less than 2900 N / mm 2 , which may cause fretting wear or decrease the shock absorption for the same reason as above. Further, if it exceeds 4000 N / mm 2 , the strength becomes too high, and disconnection occurs frequently during wire drawing.
[0016]
Furthermore, by setting the longitudinal elastic modulus to 163 to 180 GPa in the range of the wire diameter and the tensile strength, it is possible to suppress the elongation at a low load without impairing the flexibility. By the way, the longitudinal elastic modulus of the carbon steel single wire that is not attached is 200 to 210 GPa.
[0017]
Then, even if a single wire is pulled out from a bobbin that is wound simultaneously without twisting a plurality of single wires having the above structure, the tension applied to prevent loosening during pulling and the elastic force due to the wavy spring effect Lines repel each other and entanglement can be prevented.
[0018]
By the way, the number of single wires wound around one bobbin is preferably two or three. This is because if the number exceeds 3, the tangling between the single wires is likely to occur even within the above-described configuration ranges of the wire diameter, tensile strength, and longitudinal elastic modulus.
[0019]
In the above configuration, the substantially spiral corrugation applied to a single wire includes not only a circle having an apparent shape in a cross section but also an ellipse and a track shape.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
FIG. 1 is a schematic plan view of a single line showing an embodiment of the present invention.
[0022]
The
[0023]
The longitudinal elastic modulus can be adjusted by the shape of the corrugation that is specified by the wire diameter, the tensile strength, the creaking pitch (a in FIG. 1), the apparent outer diameter (b in FIG. 1), or the wave height. .
[0024]
FIG. 2 shows an embodiment of the present invention, and is a schematic perspective view showing a state in which the
[0025]
By the way, as a means for winding a plurality of single wires around one bobbin, a wire drawing machine capable of drawing a plurality of single wires at the same time is drawn to a desired wire diameter, and then provided between the wire drawing machine and the winder. There are a method of applying a corrugation with a tucking device and winding it around one bobbin at the same time, and a method of drawing one by one with a single wire drawing machine and applying a wave shape to each of them and winding them up simultaneously. When using this single wire drawing machine, the squeezing may be performed in a separate process.
[0026]
【Example】
Next, an example of the present invention will be specifically described in comparison with a comparative example.
[0027]
A steel wire with a wire diameter of 5.5 mm corresponding to SWRS82A in JIS is repeatedly subjected to patenting and wire drawing, and after the surface is subjected to brass plating, the wire is further drawn to obtain a wire diameter of 0.25 to 0.45 mm. After finishing, several types of single wires with spiral corrugation were produced. These were wound around bobbins one by one.
[0028]
In the production of a single wire, various combinations of wire diameter, tensile strength, and apparent outer diameter and pitch of a helical corrugation are used to produce a single wire that satisfies the conditions of the present invention and a comparative example that deviates from the conditions of the present invention. A single wire was manufactured. However, the wire diameter and tensile strength were within the range of the constituent requirements of the present invention.
[0029]
Subsequently, the single wire was actually pulled out from the bobbin and sandwiched between rubber sheets, and the bending of the sheet was observed.
[0030]
Next, the brass-plated wire rod is drawn to a wire diameter of 0.25 to 0.45 mm with a double wire drawing machine capable of drawing two wires at the same time, and then a spiral corrugation is applied. A single wire of the book was simultaneously wound on one bobbin to obtain a wound product.
[0031]
Subsequently, two single wires were simultaneously drawn from the wound product at the standard speed and tension in the calendar process, and the occurrence of entanglement between the single wires when they were separated was compared. The results are shown in Table 1. In the table, “number” indicates the number of single wires wound around the bobbin, “o” in the “entanglement presence / absence” column indicates that no entanglement has occurred, and “x” indicates that it has occurred.
[0032]
[Table 1]
As a means for applying a substantially spiral waveform to a single wire, as shown in Japanese Examined Patent Publication No. 63-63293, a constant spiral shape can be obtained by a kneading device that rotates around the supplied single wire as an axis. There is a way to make a habit.
Further, as means for applying a corrugation on a substantially flat surface, there are a method of applying the helical corrugation and then pressing it with a roller or the like, and a method of engaging with a gear or the like.
[0034]
In the present invention and the comparative example, the single wire was kneaded through a single wire between three pins provided on a kneading device rotating at high speed. The adjustment of the apparent outer diameter and pitch of the corrugation is determined by various selections of the diameter and spacing of the crimping pins, the degree of pushing, the tension of the single wire, and the rotational speed of the tacking device.
[0035]
Even if the single wire of the present invention is sandwiched between rubber sheets, the sheet does not bend, and as is clear from Table 1, the single wires of the present invention are not entangled even when pulled out from a bobbin on which a plurality of single wires are wound simultaneously. It was confirmed.
[0036]
It was also confirmed that similar effects can be obtained with other steel types and substantially planar corrugations.
[0037]
【The invention's effect】
Since the single wire of the present invention has a corrugation, it has excellent flexibility, and since the wire diameter, tensile strength and longitudinal elastic modulus are specified, the elongation at low load is small, and the elongation due to the tension applied to the single wire in the calendar process Can be kept small. Therefore, since the stress for returning to the original line in the rubber is small, the finished rubber sheet will not be bent.
In addition, a wound product in which a plurality of single wires of the present invention are wound simultaneously on one bobbin can be pulled out without causing tangling of single wires or disconnection due to entanglement, thereby preventing deterioration in workability during tire manufacturing. can do. Furthermore, since the increase in the number of bobbins and the addition of a creel stand are unnecessary and the increase in the installation area associated therewith can be prevented, a single wire can be put to practical use as a tire reinforcement without making capital investment.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a single line showing an embodiment of the present invention.
FIG. 2, showing an embodiment of the present invention, is a schematic perspective view showing a state in which a single wire is drawn from a bobbin.
[Explanation of symbols]
1
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001053797A JP4656743B2 (en) | 2001-02-28 | 2001-02-28 | Winding products of steel filament for tire reinforcement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001053797A JP4656743B2 (en) | 2001-02-28 | 2001-02-28 | Winding products of steel filament for tire reinforcement |
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| Publication Number | Publication Date |
|---|---|
| JP2002266265A JP2002266265A (en) | 2002-09-18 |
| JP4656743B2 true JP4656743B2 (en) | 2011-03-23 |
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| JP2001053797A Expired - Fee Related JP4656743B2 (en) | 2001-02-28 | 2001-02-28 | Winding products of steel filament for tire reinforcement |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186585A (en) * | 1985-02-12 | 1986-08-20 | 住友電気工業株式会社 | Bobbin wound steel code |
| JPH02140939U (en) * | 1989-04-25 | 1990-11-26 | ||
| JPH0484395U (en) * | 1990-11-30 | 1992-07-22 | ||
| JPH0484396U (en) * | 1990-11-30 | 1992-07-22 | ||
| JPH04304319A (en) * | 1991-04-02 | 1992-10-27 | Tokyo Seiko Co Ltd | Metallic filament for rubber composite material and its manufacture |
| JPH05345503A (en) * | 1992-06-15 | 1993-12-27 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH06255313A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH10236108A (en) * | 1997-02-24 | 1998-09-08 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JP2001039108A (en) * | 1999-07-28 | 2001-02-13 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
-
2001
- 2001-02-28 JP JP2001053797A patent/JP4656743B2/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186585A (en) * | 1985-02-12 | 1986-08-20 | 住友電気工業株式会社 | Bobbin wound steel code |
| JPH02140939U (en) * | 1989-04-25 | 1990-11-26 | ||
| JPH0484395U (en) * | 1990-11-30 | 1992-07-22 | ||
| JPH0484396U (en) * | 1990-11-30 | 1992-07-22 | ||
| JPH04304319A (en) * | 1991-04-02 | 1992-10-27 | Tokyo Seiko Co Ltd | Metallic filament for rubber composite material and its manufacture |
| JPH05345503A (en) * | 1992-06-15 | 1993-12-27 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH06255313A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH10236108A (en) * | 1997-02-24 | 1998-09-08 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JP2001039108A (en) * | 1999-07-28 | 2001-02-13 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002266265A (en) | 2002-09-18 |
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