JP5019109B2 - Manufacturing method of toothed belt - Google Patents

Manufacturing method of toothed belt Download PDF

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Publication number
JP5019109B2
JP5019109B2 JP2007144537A JP2007144537A JP5019109B2 JP 5019109 B2 JP5019109 B2 JP 5019109B2 JP 2007144537 A JP2007144537 A JP 2007144537A JP 2007144537 A JP2007144537 A JP 2007144537A JP 5019109 B2 JP5019109 B2 JP 5019109B2
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Prior art keywords
toothed belt
toothed
manufacturing
belt
core wire
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JP2008296445A (en
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英樹 増子
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Nok Corp
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Nok Corp
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Description

本発明は、歯付ベルトの製造方法に関する。
また、本発明は、プーリーとの噛合いが良好な歯付ベルトの製造方法に
関する。
更に、本発明は、歯付ベルトのピッチライン（心線中心）をプーリーのピッチライン（円）により近付けることにより、心線の疲労が少ない歯付ベルトの製造方法に関する。 The present invention relates to a method for manufacturing a toothed belt .
The present invention also relates to a method for manufacturing a toothed belt having good meshing with a pulley.
Furthermore, the present invention relates to a method for manufacturing a toothed belt with less fatigue of the core wire by bringing the pitch line (center of the core wire) of the toothed belt closer to the pitch line (circle) of the pulley.

従来、歯付ベルトを製造する場合の一例を、図１および図４に示す。
この装置は、図１に示すように、基本的には三個の回転ローラ１、１、１と、上側の二つの回転ローラ１、１相互間に配設され、且つ、図４に示す様に、凹み部形成突起３１の先端周面の略中央に、軸方向に伸びる一本の突起３１１を有する歯付金型３と、これら回転ローラ１，１を利用して張設されたベルト２とから構成されている。 Conventional examples of manufacturing a toothed belt are shown in FIGS. 1 and 4.
As shown in FIG. 1, this apparatus is basically arranged between three rotating rollers 1, 1, 1 and the upper two rotating rollers 1, 1, and as shown in FIG. In addition, a toothed mold 3 having a single protrusion 311 extending in the axial direction at a substantially central portion of the tip peripheral surface of the recess forming protrusion 31, and a belt 2 stretched using these rotating rollers 1, 1. It consists of and.

ここで、図上下側の回転ローラ１はベルト２用のテンションローラとし機能し、このローラにより不使用時には、ベルト２が歯付金型３の歯先に圧接し、液状の弾性材が歯付金型３とベルト２との間隙Ｘに流し込まれた使用状態のときには、これら相互間に弾性材が挟まって一定の距離が保たれるようにしてある。   Here, the rotating roller 1 on the upper and lower sides of the figure functions as a tension roller for the belt 2, and when not in use, the belt 2 presses against the tooth tip of the toothed mold 3 and the liquid elastic material is toothed. In the state of use in which the mold 3 and the belt 2 are poured into the gap X, an elastic material is sandwiched between them so that a certain distance is maintained.

この装置では、図１に示すように、歯付金型３とベルト２との間に心線４を挿入介在させ、ベルト２を回転させるべく回転ローラ１を回転させながら、間隙Ｘに液状の弾性材を流し込むようにして歯付ベルト５を完成させる。
完成した歯付ベルト５は、突起３１１の存在により、図４に示す如く心線４が位置決めされた状態で埋設された（歯底面から一定の距離を有する）ものとなっている。 In this apparatus, as shown in FIG. 1, a core wire 4 is inserted between the toothed mold 3 and the belt 2, and the rotating roller 1 is rotated to rotate the belt 2. The toothed belt 5 is completed by pouring the elastic material.
The completed toothed belt 5 is embedded (having a certain distance from the tooth bottom surface) with the core wire 4 positioned as shown in FIG. 4 due to the presence of the protrusion 311.

しかしながら、上記歯付ベルトは、凹み部形成突起３１の先端周面の略中央に、軸方向に伸びる一本の突起３１１と、心線４とが当接する態様で製造されていくことから、図４に示す如く、心線４は多角形（多角化）となっている。
そして、凹み部形成突起３１の数が少なく成る程、多角化の傾向は強くなる。
このため、歯付ベルトのピッチライン（心線中心）がプーリーのピッチライン（円）と大きく異なってくるため、プーリーとの噛合いが悪く、心線の疲労が大きい問題を惹起していた。 However, the toothed belt is manufactured in such a manner that the one core 3 is in contact with the one protrusion 311 extending in the axial direction substantially at the center of the front peripheral surface of the recess forming protrusion 31. As shown in FIG. 4, the core 4 is a polygon (diversification).
And the tendency of diversification becomes strong, so that the number of the recessed part formation protrusion 31 decreases.
For this reason, since the pitch line (center of the core wire) of the toothed belt is greatly different from the pitch line (circle) of the pulley, the meshing with the pulley is poor, causing a problem of large fatigue of the core wire.

また、この種の問題を解決するために、心線に樹脂を被覆したものを使用する歯付ベルトが提案された（特開平０７−３０８９７４号公報）。
しかし、製造コストが嵩み現実的ではなかった。 In order to solve this type of problem, a toothed belt using a resin coated core is proposed (Japanese Patent Laid-Open No. 07-308974).
However, the manufacturing cost is high and it is not realistic.

特開平０７−３０８９７４号公報JP 07-308974 A

本発明は、このような課題に鑑みてなされたものであり歯付ベルトのピッチライン（心線中心）をプーリーのピッチライン（円）に、より近付けることにより、プーリーとの噛合いが良好で、心線の疲労が少ない歯付ベルトを提供することである。   The present invention has been made in view of such problems, and by bringing the pitch line (center of the core) of the toothed belt closer to the pitch line (circle) of the pulley, the engagement with the pulley is good. It is to provide a toothed belt with less fatigue of the core wire.

本発明の歯付ベルトの製造方法は、歯付金型を備えた装置で歯付ベルトを製造する方法において、前記歯付金型の凹み部形成突起の各々に、心線を保持するための前記凹み部形成突起の周方向両端に位置する突起を複数個設け、前記突起により前記心線を保持しつつ歯付ベルトを製造することを特徴とする。 The method for manufacturing a toothed belt according to the present invention is a method for manufacturing a toothed belt using an apparatus having a toothed mold, for holding a core wire in each of the recess forming protrusions of the toothed mold. A plurality of protrusions positioned at both ends in the circumferential direction of the recess-forming protrusions are provided, and a toothed belt is manufactured while holding the core wire by the protrusions .

本発明は、以下に記載されるような効果を奏する。
請求項１記載の発明の歯付ベルトの製造方法によれば、歯底の周方向幅を最大限に生かす事が出来る為、耐久性の良好な歯付ベルトとすることが出来る。 The present invention has the following effects.
According to the method for manufacturing a toothed belt of the first aspect of the invention, since the circumferential width of the tooth bottom can be utilized to the maximum, a toothed belt having excellent durability can be obtained.

以下、本発明を実施するための最良の形態について説明する。
第１図及び第２図に基づき、発明を実施するための一例について説明する。
この種歯付ベルトの製造方法は、回転ローラ１で張設されたスチール製のベルト２と、このベルト２に対して一定の角度分だけ接触させた歯付金型３とを備えた装置で歯付ベルトを製造するものである。 Hereinafter, the best mode for carrying out the present invention will be described.
An example for carrying out the invention will be described with reference to FIG. 1 and FIG.
This seed toothed belt manufacturing method is an apparatus provided with a steel belt 2 stretched by a rotating roller 1 and a toothed mold 3 brought into contact with the belt 2 by a certain angle. A toothed belt is manufactured.

そして、歯付金型３の凹み部形成突起３１の各々に、心線４を保持するための突起３１１を、周方向両端に位置する形で２個設け、この凹み部形成突起３１の各々に設けた2個の突起３１１、３１１により心線４を保持しつつ歯付金型３を回転させ、ついで、ベルト２と歯付金型３との間隙Xに液状弾性材を流し込むことにより歯付ベルトを製造する。
心線４は、スチールコードやアラミド繊維等が使用されるが、本発明に係る歯付ベルトでは、心線にスチールコードを使用した。
また、心線４は、複数本が互いに平行で、等間隔に歯付金型3上に巻きついて存在する。 Then, each of the recessed portion forming protrusions 31 of the toothed mold 3 is provided with two protrusions 311 for holding the core wire 4 so as to be positioned at both ends in the circumferential direction, and each of the recessed portion forming protrusions 31 is provided. The toothed mold 3 is rotated while the core wire 4 is held by the two projections 311 and 311 provided, and then the liquid elastic material is poured into the gap X between the belt 2 and the toothed mold 3 to add the teeth. Manufacture belts.
For the core 4, a steel cord, an aramid fiber, or the like is used. In the toothed belt according to the present invention, a steel cord is used for the core.
A plurality of core wires 4 are parallel to each other and wound around the toothed mold 3 at equal intervals.

液状弾製材としては、各種のゴム状若しくは樹脂状弾性材が使用されるが、本発明に係る歯付ベルトの製造方法では、ウレタンゴムを使用した。
一般的に、歯付金型の凹み部形成突起３１の数が大きいほど、巻きつけられた心線４は円に近づくが、凹み部形成突起３１の数が少なく成る程、多角化（心線の折れ曲がる割合）の傾向が強くなり、理想とする円から心線中心が離れていくが、本発明によれば、この傾向を鈍化させることが出来る。
すなわち、凹み部形成突起３１の周方向幅と、凹み部形成突起３１間の窪みの周方向幅が同じと仮定すると、本発明の歯付ベルトによれば、約2倍の凹み部形成突起３１の数のものに匹敵する真円度が得られる。
また、本発明に係る歯付ベルトは、歯付ベルトの歯底５に、成形時に心線４を支持するための凹み部６を複数個設けている。
そして、この凹み部６は、歯底５の歯部７の裾野近傍に各々設ける態様としている。
このことにより、歯底の幅を最大限に生かす事が出来る。 As the liquid elastic material, various rubber-like or resin-like elastic materials are used. In the manufacturing method of the toothed belt according to the present invention, urethane rubber is used.
In general, the larger the number of the recessed portion forming protrusions 31 of the toothed mold, the closer the wound core wire 4 is to a circle, but the smaller the number of the recessed portion forming protrusions 31 is, the more diversified (core wire is. The tendency of the bending ratio) becomes stronger, and the center of the core line moves away from the ideal circle. According to the present invention, this tendency can be slowed down.
That is, assuming that the circumferential width of the recess forming protrusion 31 and the circumferential width of the recess between the recess forming protrusions 31 are the same, according to the toothed belt of the present invention, approximately twice the recessed section forming protrusion 31 is formed. A roundness comparable to that of can be obtained.
In addition, the toothed belt according to the present invention is provided with a plurality of recesses 6 for supporting the core wire 4 at the time of molding on the tooth bottom 5 of the toothed belt.
And this recessed part 6 is set as the aspect provided in the skirt vicinity of the tooth | gear part 7 of the tooth base 5, respectively.
This makes it possible to maximize the width of the tooth bottom.

また、本発明は上述の発明を実施するための最良の形態に限らず本発明の要旨を逸脱することなくその他種々の構成を採り得ることはもちろんである。   Further, the present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.

歯付ベルトの製造方法の一例を示す装置の概念図である。It is a conceptual diagram of the apparatus which shows an example of the manufacturing method of a toothed belt. 本発明にかかる歯付ベルトが製造される一例を示した装置の部分断面図である。It is the fragmentary sectional view of the apparatus which showed an example with which the toothed belt concerning this invention is manufactured. 本発明にかかる歯付ベルトの部分断面図である。It is a fragmentary sectional view of a toothed belt concerning the present invention. 従来技術にかかる歯付ベルトが製造される一例を示した装置の部分断面図である。It is the fragmentary sectional view of the apparatus which showed an example with which the toothed belt concerning a prior art is manufactured.

符号の説明Explanation of symbols

１ 回転ローラ
２ ベルト
３ 歯付金型
４ 心線
５ 歯付ベルト
６ 凹み部
７ 歯部
８ 歯底
３１ 凹み部形成突起
３１１ 突起 DESCRIPTION OF SYMBOLS 1 Rotating roller 2 Belt 3 Toothed metal mold 4 Core wire 5 Toothed belt 6 Recessed portion 7 Toothed portion 8 Tooth bottom 31 Recessed portion forming protrusion 311 Protrusion

Claims (1)

歯付金型（３）を備えた装置で歯付ベルトを製造する方法において、前記歯付金型（３）の凹み部形成突起（３１）の各々に、心線（４）を保持するための前記凹み部形成突起（３１）の周方向両端に位置する突起（３１１）を複数個設け、前記突起（３１１、３１１）により前記心線（４）を保持しつつ歯付ベルトを製造することを特徴とする歯付ベルトの製造方法。In a method of manufacturing a toothed belt with an apparatus provided with a toothed mold (3), a core wire (4) is held on each of the recess forming protrusions (31) of the toothed mold (3). A plurality of protrusions (311) located at both ends in the circumferential direction of the recess forming protrusion (31) are provided, and a toothed belt is manufactured while holding the core wire (4) by the protrusions (311 and 311). The manufacturing method of the toothed belt characterized by these.
JP2007144537A 2007-05-31 2007-05-31 Manufacturing method of toothed belt Expired - Fee Related JP5019109B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7141716B2 (en) 2019-07-23 2022-09-26 株式会社高山自動車 Drive system development support device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154642U (en) * 1984-03-23 1985-10-15 バンドー化学株式会社 toothed belt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7141716B2 (en) 2019-07-23 2022-09-26 株式会社高山自動車 Drive system development support device

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