JPH03126533A - Manufacture of v ribbed belt - Google Patents
Manufacture of v ribbed beltInfo
- Publication number
- JPH03126533A JPH03126533A JP26458389A JP26458389A JPH03126533A JP H03126533 A JPH03126533 A JP H03126533A JP 26458389 A JP26458389 A JP 26458389A JP 26458389 A JP26458389 A JP 26458389A JP H03126533 A JPH03126533 A JP H03126533A
- Authority
- JP
- Japan
- Prior art keywords
- canvas
- rib
- belt
- rubber sheet
- mold
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 238000007667 floating Methods 0.000 claims abstract description 11
- 238000004049 embossing Methods 0.000 claims abstract 7
- 238000000465 moulding Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 21
- 238000004073 vulcanization Methods 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000004636 vulcanized rubber Substances 0.000 claims 1
- 230000003449 preventive effect Effects 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- KVBYPTUGEKVEIJ-UHFFFAOYSA-N benzene-1,3-diol;formaldehyde Chemical compound O=C.OC1=CC=CC(O)=C1 KVBYPTUGEKVEIJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はＶリブドベルトの製造方法に関し、特にベル
トの長手方向に伸びる複数本の■形すブの表面を補強用
帆布にて被覆したＶリブドベルトの製造方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing a V-ribbed belt, and more particularly to a V-ribbed belt in which the surfaces of a plurality of ■-shaped ribs extending in the longitudinal direction of the belt are covered with reinforcing canvas. Relating to a manufacturing method.
（従来の技術）
動力伝動用ベルトたる■リブドベルトは、■ベルトに比
べると厚味が薄いため、曲げ応力が少なく、小プーリに
対する使用可能域が広く、コンパクトな設計が可能で、
また省エネルギー効果も十Ｉｏ顕著である。また、■ベ
ルトに比べ、■リブドベルトは駆動時プーリ溝への沈み
込みに原因するベルト張力の低下も少なく、このためベ
ルトライフも長くなるなど、ちくの長所を備えており、
その用途も自動車、農機、家庭用電化機器など拡大の一
途を辿っている。(Conventional technology) ■ Ribbed belts, which are power transmission belts, are thinner than ■ belts, so they have less bending stress, can be used over a wide range of small pulleys, and can be designed compactly.
Moreover, the energy saving effect is also remarkable. In addition, compared to ■belts, ■ribbed belts have the advantage of being less likely to lose belt tension due to sinking into the pulley groove during driving, and therefore have a longer belt life.
Its applications are also expanding, including automobiles, agricultural machinery, and household electrical appliances.
Ｖリブドベルトは、以上その一例を示すごとく、多数の
長所を保有しているも、過大な張力や回転変動が加わる
とベルトはスリップしやすく、この結果リブゴムの摩耗
、クラック、脱落の発生などベルトライフを短縮せしめ
る原因も多々内在せしめている。Although V-ribbed belts have many advantages, as shown in the examples above, the belt tends to slip when excessive tension or rotational fluctuations are applied, resulting in wear, cracking, and falling off of the rib rubber, which reduces belt life. There are many underlying causes that shorten the term.
さらに、Ｖリブの大きさは、■ベルトに比べ小さいため
、プーリ溝内にはダスト、砂、泥などが溜まり易く、こ
れが原因で、リブゴムの摩耗がおこり易く、これまたベ
ルトライフを短縮化する結果となる
また、最近では■リブドベルトを用いた駆動装置より発
生する騒音の問題も無視できない問題点の一つとして加
わり、例えばベルトのプーリ周方向でのスリップによる
発音、ベルトがプーリに対して出入りする折の、プーリ
径方向でのスリップ摩擦による異音の発生など、騒音に
対する改善要求も高まって来ている。Furthermore, the size of the V-rib is smaller than that of the belt, so dust, sand, mud, etc. tend to accumulate in the pulley groove, which causes the rib rubber to wear easily, which also shortens the belt life. As a result, in recent years, the problem of noise generated by drive devices using ribbed belts has also been added as a problem that cannot be ignored. At the same time, there is an increasing demand for improvements in noise reduction, such as the occurrence of abnormal noise due to slip friction in the radial direction of the pulley.
これらの問題点および改善要求に対処するため、リブゴ
ムの表面を布で被覆することにより、リブゴム表面の摩
耗その他の問題点を減少せしめる多数の試みがなされて
いる。従来、この種の■リブドベルトの製造方法として
は、例えば特公昭５８−３４６９７号公報に開示されて
いるように、伸縮性帆布を用いて、緩やかな波形状に型
付けした加硫スリーブを切削加工する方法、あるいは特
開昭６２−１８８８３７号公報に開示されているように
、未加硫成型体の外表面を切削して、リブ形状を成型し
、その表面を帆布にて被覆して加硫成型する方法などが
提案されている。To address these problems and demands for improvement, numerous attempts have been made to reduce wear and other problems on the rib rubber surface by covering the surface of the rib rubber with cloth. Conventionally, as a manufacturing method for this type of ribbed belt, for example, as disclosed in Japanese Patent Publication No. 58-34697, a vulcanized sleeve shaped into a gentle wave shape is cut using elastic canvas. method, or as disclosed in JP-A-62-188837, the outer surface of an unvulcanized molded body is cut to form a rib shape, the surface is covered with canvas, and vulcanization molding is performed. There are several methods proposed.
（発明が解決しようとする課題）
しかしながら、前者の製造方法では、Ｖ形すブ部を帆布
にて被覆するに際し、伸縮性帆布の伸縮方向をベルトの
長さ方向に用いるためリブ形の成形が困難となり、また
伸縮性帆布の伸縮方向をベルトの巾方向に用いるとリブ
の形成は容易になるが、ベルトは屈曲性が悪くなり、ベ
ルト駆動時の屈曲による発熱、クラックの発生などの不
具合が発生する。(Problem to be Solved by the Invention) However, in the former manufacturing method, when covering the V-shaped rib portion with canvas, the stretching direction of the stretchable canvas is used in the longitudinal direction of the belt, so forming the rib shape is difficult. In addition, if the stretch direction of the stretchable canvas is used in the width direction of the belt, it becomes easier to form ribs, but the belt becomes less flexible and causes problems such as heat generation and cracks due to bending when the belt is driven. Occur.
また、後者の製造方法では、短繊維の配向性は良いが、
未加硫状態でリブを形成し、その上に帆布をリブ形状に
沿って被覆するのが非常に困難である。In addition, in the latter manufacturing method, although the orientation of the short fibers is good,
It is very difficult to form ribs in an unvulcanized state and then cover them with canvas along the shape of the ribs.
そして、現在のところ、Ｖリブ群の形状を崩すことなく
、かつベルト局長方向へのゴム引き布の伸びを４０％以
上に確保しうるゴム引き布をもって、リブゴムを被覆し
た望ましい■リブドベルトの製造方法は提案されていな
い。At present, it is desirable to cover the rib rubber with a rubberized cloth that can ensure the elongation of the rubberized cloth in the direction of the belt length to 40% or more without destroying the shape of the V-rib group. has not been proposed.
この発明は、■リブ群を被覆するベルト巾方向の別件が
大きい帆布にあっても、リブ形状に沿い、正確な■リブ
形状を保持しうるＶリブドベルトの製造方法を提供する
ことを目的とする。An object of the present invention is to provide a method for manufacturing a V-ribbed belt that can follow the rib shape and maintain an accurate rib shape even if the canvas covering the rib group has a large width direction. .
（課題を解決するための手段）
上記目的を達成するための、この発明のＶリブドベルｊ
・の製造方法の要部は、実にＶリブドベルトのうち、帆
布を被覆せしめたＶリブ部を中心とする帆布付きリブ型
付体を中心とする製造方法にあり、リブ溝群を設けたモ
ールドには、ゴム付伸縮性帆布が、その伸縮方向をリブ
溝の長さ方向に一致せしめて配され、帆布の端部よりリ
ブ溝内へ少なくとも二本の型付治具をもって、一本の型
付作業時には、他方の治具はリブ溝内にて型付は状態を
維持せしめて、順次型付けし、この型付は後の帆布は、
リブ溝内に細線状の浮上り阻止用治具による押え込んだ
状況下にて、リブ溝内に充Ｊｎされるための未加硫ゴム
シートにて帆布の型付は部を押え、ゴムシートのリブ溝
内へ加圧光重の進行と時を同じくして、浮上り阻止用治
具を抜去し、帆布付きリブ型付体の予備成型が完了する
。そして別途成形された成型モールド上に未加硫ベルト
構成体と前記帆布付きリブ型付体とは重ね合され、無端
状の未加硫ベルト成型体の形成後、加硫、カット作業に
より、Ｖリブドベルトが製造されることを特徴とする。(Means for Solving the Problem) A V-ribbed bell of the present invention to achieve the above object.
The main part of the manufacturing method of ・ is actually the manufacturing method that centers on the rib-shaped body with canvas, which is centered on the V-rib part covered with canvas among V-ribbed belts, and the mold with rib groove groups. In this method, a stretchable canvas with rubber is arranged so that its stretching direction coincides with the length direction of the rib groove, and at least two molding jigs are inserted into the rib groove from the end of the canvas, and one molding tool is inserted into the rib groove. During work, the other jig maintains the molding state in the rib groove, and molds are made one after another.
Under the condition that the rib groove is held down by a jig for preventing floating in the shape of a thin line, the canvas is pressed down with an unvulcanized rubber sheet to fill the rib groove, and the rubber sheet is pressed down. At the same time as the pressurized light weight advances into the rib groove, the floating prevention jig is removed, and the preliminary forming of the rib-shaped body with canvas is completed. Then, the unvulcanized belt structure and the ribbed body with canvas are superimposed on a separately formed mold, and after forming an endless unvulcanized belt molded body, vulcanization and cutting operations are performed to form a V It is characterized in that a ribbed belt is produced.
（実施例）
つぎに、この発明に係る■リブドベルトの製造方法につ
き、その具体的実施例を図面を用いて説明する。(Examples) Next, specific examples of the method for manufacturing a ribbed belt according to the present invention will be described with reference to the drawings.
第１図は帆布付きリブ型付体の円筒モールドを用いての
予備成型工程を示す断面図、第２図は帆布付きリブ型付
体一部の斜視図、第３図は帆布付きリブ型付体の平板モ
ールドを用いての予備成型工程を示すモールド一部分の
斜視図である。図中、（１）は周面にて軸方向に伸びる
リブ溝（２）と突条（３）を全周に亘って所定のピッチ
をもって設けたリブ型付体成形用の金属製円筒モールド
である。Figure 1 is a cross-sectional view showing the preliminary molding process of a rib-type body with canvas and a cylindrical mold, Figure 2 is a perspective view of a part of the rib-type body with canvas, and Figure 3 is a rib-type body with canvas. FIG. 4 is a perspective view of a portion of the mold showing a preforming process using a flat plate mold for the body. In the figure, (1) is a metal cylindrical mold for body forming with a rib type, which has rib grooves (2) and protrusions (3) extending in the axial direction on the circumferential surface at a predetermined pitch over the entire circumference. be.
このモールド（１）は、その表面が８０℃前後に予熱さ
れており、該モールド（１）の外周面に、剛性の大きい
ゴム付き伸縮性帆布（４）を、帆布（４）の伸縮方向を
モールドのリブ溝（２）の長さ方向に一致せしめて、順
次巻付けて行く。よって伸縮性帆布の伸縮性のない剛性
の大きい方向は、モールドの円周方向に一致している。The surface of this mold (1) is preheated to around 80°C, and a highly rigid elastic canvas (4) with rubber is attached to the outer circumferential surface of the mold (1), and the direction of expansion and contraction of the canvas (4) is Wrap it sequentially so that it matches the length direction of the rib groove (2) of the mold. Therefore, the direction in which the stretchable canvas has no stretchability and high rigidity coincides with the circumferential direction of the mold.
この伸縮性帆布（４）は綿、人絹などの天然繊維または
アラミド、ビニロンなどの熱溶融しない合成繊維を、単
独に、あるいは前記繊維とナイロン、Ｉ’ Ｅ Ｔなど
の熱可塑性繊維の混紡糸からなり、ウーリー加工された
捲縮緯糸と通常の経糸または弾性糸と通常経糸で織製さ
れた汎布、その他メリヤス織物、経緯糸とも綿糸よりな
るワイドアンゲス帆布などにて構成されている。これに
よりベルト完成後帆布はベルト長さ方向に４０％以上の
伸縮性を確保するよう配慮されている。モールド（１）
面に配されたゴム付き伸縮性帆布（４）は、帆布の端部
より、リブ溝（２）の形状に略一致せしめた形状からな
る、少なくとも二本の長手の型付治具（５）にて、順次
リブ溝（２）内に帆布（４）を押し込んで型付けする。This stretchable canvas (4) is made of natural fibers such as cotton and human silk, or synthetic fibers that do not melt under heat such as aramid and vinylon, either alone or a blend of the above fibers and thermoplastic fibers such as nylon and I'ET. It is composed of general cloth woven with woolly-processed crimped weft and normal warp or elastic yarn and normal warp, other knitted fabrics, and wide Anges canvas made of cotton threads for both warp and warp. As a result, consideration is given to ensuring that the canvas after the belt is completed has an elasticity of 40% or more in the length direction of the belt. Mold (1)
The elastic canvas with rubber (4) arranged on the surface has at least two long molding jigs (5) having a shape that approximately matches the shape of the rib groove (2) from the end of the canvas. , the canvas (4) is successively pushed into the rib groove (2) and shaped.
治具（５）による新らたな形材は作業の折、片側の治具
（５）は、依然としてリブ溝中にて帆布の型付は押し付
は作業を継続していることにより、帆布へ作用する引っ
ばり力による帆布の移動を抑制することができる。The new shape created by jig (5) is being worked on, and the jig (5) on one side is still working on shaping and pressing the canvas in the rib grooves. It is possible to suppress the movement of the canvas due to the tensile force acting on the canvas.
そして、モールドのリブ溝に押し込まれての帆布の型付
は作業は、モールドが保有する予熱により帆布の型付け
は状態は効果的に持続される。長手の型付治具（５）が
リブ溝（２）より離れ、リブ溝内に残って型付けされた
帆布（４）の四部毎には、リブ溝（２）に沿っての引き
抜き容易な、例えばピアノ線などからなる細線状の浮上
り阻止用治具（６）が装備される。The work of shaping the canvas by being pushed into the rib groove of the mold is effectively maintained due to the preheating held by the mold. The long molding jig (5) is separated from the rib groove (2), and each of the four parts of the canvas (4) remaining in the rib groove and molded is provided with a molding tool that can be easily pulled out along the rib groove (2). For example, a thin wire-like floating prevention jig (6) made of piano wire or the like is provided.
浮上り阻止用治具（６）にて、リブ溝に型付き状態にあ
る帆布（４）は、帆布（４）の上方に位置する未加硫ゴ
ムシート（７）にてモールド上にその動きを抑制された
状況下にて、浮上り阻止用治具（６）はリブ溝（２）部
より引き抜れると同時に未加硫ゴムシート（７）は回転
可能な抑圧ロール（８）にて加圧されながら、帆布の凹
部に充填され、伸縮性帆布（４）と未加硫ゴムシート（
７）は一体止される。この作業を順次繰り返すことによ
り、第２図に示す未加硫帆布付きリブ型付体（９）が形
成され、予備成型工程が完了する。The canvas (4), which is molded into the rib grooves by the floating prevention jig (6), is prevented from moving on the mold by the unvulcanized rubber sheet (7) located above the canvas (4). Under such conditions, the floating prevention jig (6) is pulled out from the rib groove (2), and at the same time the unvulcanized rubber sheet (7) is pulled out by the rotatable suppression roll (8). While being pressurized, the recesses of the canvas are filled, and the elastic canvas (4) and unvulcanized rubber sheet (
7) is completely stopped. By sequentially repeating this operation, the rib-shaped body (9) with unvulcanized canvas shown in FIG. 2 is formed, and the preforming process is completed.
なお、この未加硫ゴムシート（７）はその充ｍ作業に先
立って、その充填作業を容易なものとすべく予熱処理し
ておくことが望ましく、また必要に応じ、同シート内に
は綿糸、ナイロン糸、ポリエステル糸、レーヨン糸など
からなる短繊維が混入されている。なお、帆布付きリブ
型付体（９）はその型付を確実なものとするため、半加
硫状態あるいは加硫状態にすることも可能である。In addition, it is desirable that this unvulcanized rubber sheet (7) be preheated prior to its filling operation in order to facilitate the filling operation, and if necessary, cotton thread may be inserted into the sheet. , short fibers made of nylon thread, polyester thread, rayon thread, etc. are mixed in. In addition, in order to ensure the shaping of the canvas-attached rib-shaped body (9), it is also possible to make it in a semi-vulcanized state or a vulcanized state.
以上の予備成型工程は、成型モールドとして円筒状モー
ルドを中心に説明したが、このモールドは第３図に示す
ように平板モールド（１）を用いることも勿論可能であ
る。その詳細は円筒状モールド（１）上での作業と略同
様であるので、その詳細な説明はこれを割愛する。Although the above preliminary molding process has been mainly explained using a cylindrical mold as the mold, it is of course possible to use a flat plate mold (1) as shown in FIG. 3. Since the details are substantially the same as those for the cylindrical mold (1), a detailed explanation thereof will be omitted.
引続き、第４図に示すように、円筒状ドラム１））の外
周面に経緯綿糸よりなるゴム付バイアス帆布（交差角８
０〜１５５°）、若しくは経糸にウーリーナイロン捲縮
糸を用いたゴム付伸縮性帆布（１０）を１〜複数層（通
常１〜３層）無端状に巻き付ける。そして、その上にＮ
ＩＬ％Ｓ Ｂ ｆｔ、（゛Ｒ１１目ｊ、ＩＩＮＢ几など
の単一桟゛、若しくはこれらを適宜ブレンドした厚みの
薄い上部接着ゴムシート（１２）を巻付け、更にその上
にロープ抗張体（１１）を巻付けるが、この巻付けはロ
ープ抗張体の配列状態に影響を及ぼすため、一定のテン
ションで均一に巻付ける必要があり、通常はイソシア′
ネート系及びＩＩＦＬ（レゾルシン・ホルマリン・ラテ
ックス）液でその表面を処理し、かつ熱延伸処理を施し
たポリエステル繊維、ナイロン、ケブラー（商品名）あ
るいはガラス繊維などの低伸度高強力のロープ抗張体（
１１）を一定張力下でスパイラル状に巻付け、その上に
上部接着ゴムシート（１２）と同材質の下部接着ゴム層
（１３）を巻付けて抗張体（１１）を接着ゴム層（１２
）（１３）中に埋設せしめて、ベルト構成部材の一部を
形成し、その上に前記予備成形工程で成形ずみの帆布付
リブ型付体（９）をリブ部を軸方向と直角になるように
調整しながら巻き付けて、円筒状の広巾の未加硫成形体
（１４）を得て成形工程が完了する。Subsequently, as shown in Fig. 4, a rubberized bias canvas (crossing angle 8
0 to 155°) or a rubberized elastic canvas (10) using woolly nylon crimped yarn as the warp is wound endlessly in one to multiple layers (usually one to three layers). And on top of that
IL%S B ft, (a single crosspiece such as R11, IINB) or a thin upper adhesive rubber sheet (12) made of an appropriate blend of these is wrapped, and a rope tensile member (12) is wrapped around it. 11), but since this winding affects the arrangement of the rope tensile body, it is necessary to wind it uniformly with a constant tension, and usually
Low elongation, high strength rope tensile strength such as polyester fiber, nylon, Kevlar (trade name) or glass fiber whose surface has been treated with nate-based or IIFL (resorcinol formalin latex) liquid and subjected to hot stretching treatment. body(
11) in a spiral shape under constant tension, and then a lower adhesive rubber layer (13) made of the same material as the upper adhesive rubber sheet (12) is wound on top of it, and the tensile member (11) is wrapped around the adhesive rubber layer (12).
) (13) to form a part of the belt component, and on top of it, the canvas-attached rib-shaped body (9) formed in the preforming process is placed so that the rib part is perpendicular to the axial direction. The molding process is completed by winding the unvulcanized molded body (14) with a wide cylindrical shape.
以上は、連成型により得られたベルト成型体を中心に説
明したが、正成型のベルト成型体をもって■リブドベル
トを得ることもできる。即ち、予備成型された帆布付き
リブ型付体（９）を、リブ溝を外周表面に有する弾性母
型モールドを被覆せしめた円筒状モールドに嵌め込み、
未加硫下部接着ゴムシート、抗張体ロープ、未加硫上部
接着ゴムシートおよびゴム付帆布などからなるベルト構
成部材を順次巻付けて無端状の未加硫ベルト成形体を形
成する。Although the above description has focused on a belt molded body obtained by continuous molding, a ribbed belt can also be obtained using a belt molded body of regular molding. That is, the preformed canvas-attached rib-shaped body (9) is fitted into a cylindrical mold covered with an elastic matrix mold having rib grooves on the outer peripheral surface.
Belt constituent members consisting of an unvulcanized lower adhesive rubber sheet, a tensile rope, an unvulcanized upper adhesive rubber sheet, rubberized canvas, and the like are sequentially wound to form an endless unvulcanized belt molded body.
かくして、得られた広［１］の未加硫ベルト構成体（１
４）は、以後、っぎの加硫成型工程に移され加硫される
。Thus, the obtained wide [1] unvulcanized belt structure (1
4) is then transferred to the next vulcanization molding step and vulcanized.
加硫工程では、公知の加硫成型で行われるが、例えば第
４図、第５図に示すように、未加硫ベルト構成体（１４
）の周囲に内面円周方向にリブ溝（１５）を有する金型
若しくは弾性体母型モールド（１６）を嵌め込み、その
外側にゴム製円筒ジャケット、もしくは薄いステンレス
バンドなどよりなる押圧体（Ｐ）を嵌め込み、高圧蒸気
もしくはパイプヒータなどで加圧加熱することにより、
広巾の加硫ベルト成形体（１７）が得られ、加硫成型工
程が完了する（第５図）。The vulcanization process is carried out by known vulcanization molding, and for example, as shown in FIGS. 4 and 5, an unvulcanized belt structure (14
) is fitted with a mold or an elastic matrix mold (16) having rib grooves (15) in the inner circumferential direction, and a pressing body (P) made of a rubber cylindrical jacket or a thin stainless steel band is fitted on the outside thereof. By fitting and heating under pressure with high pressure steam or pipe heater,
A wide vulcanized belt molded body (17) is obtained, and the vulcanization molding process is completed (FIG. 5).
このようにして、加硫成型が終わると抑圧体（１’）を
外し、加硫ベルト成形体（１７）を円筒状ドラムσ））
、母型モールド（１６）より取り外し、所定のリブ数と
なるように輪切りを行ない、反転することにより、第６
図に示すように、抗張体ロープ・（１１）を上下接着ゴ
ム（１２）（１３）中に埋設し、上部にゴム付帆布（１
０）とリブ表面に剛性の大きいゴム付き伸縮性帆布（４
）が貼着された■リブドベルド（１８）を得ることがで
きる。In this way, when the vulcanization molding is completed, the suppressor (1') is removed and the vulcanized belt molded body (17) is transferred to the cylindrical drum σ)).
The sixth
As shown in the figure, a tensile rope (11) is embedded in upper and lower adhesive rubber (12) (13), and a canvas with rubber (1
0) and elastic canvas with high rigidity rubber on the rib surface (4
) can be obtained. ■ Ribbed belt (18) can be obtained.
なお、加硫成型は、リブ溝を有する平面状の上金型と平
面状の下金型とからなる加硫金型を未加硫ベルト成型体
に適用して行なうプレス加硫、リブ溝を有するロートキ
ュアーに未加硫ベルト成型体を巻回し、圧縮下で回転し
ながら行なうロートキュアー加硫および内面の周方向に
リブ溝を有する円筒状の加硫金型に未加硫ベルト成型体
を嵌め込み、内側に加硫用の円筒スリーブを適用し、内
側より加熱加圧するインナーモールド加硫などが成型方
法と関連して適宜選択される。Vulcanization molding is press vulcanization, which is performed by applying a vulcanization mold consisting of a planar upper mold with rib grooves and a flat lower mold to an unvulcanized belt molding, and press vulcanization with rib grooves. The unvulcanized belt molded body is wound around a rotocure, and rotocure vulcanization is performed while rotating under compression. Inner mold vulcanization, in which a cylindrical sleeve for vulcanization is applied to the inside of the sleeve and heated and pressurized from the inside, is appropriately selected depending on the molding method.
（発明の効果）
この発明はベルト下面にて、ベルト長手方向に伸びるリ
ブ群の表面を剛性の大きい帆布にて被覆するにあたって
、正確なリブ形状を保持した帆布の被覆に発明の主眼を
置き、特に伸縮性を有する帆布の伸縮性をＶリブの長手
方向に一致せしめることにより、■リブドベルトの小径
プーリにも十分対応できるよう屈曲性の良好さを確保せ
しめ、また帆布の伸縮性をベルトの■リブ長手方向に配
することにより、当然予想されるベルト幅方向の型付の
困難性を、少なくとも二本の型付治具を用いて、一本の
治具による型付は作業遂行時には、他の型付治具はリブ
溝内に帆布を押え込んだ状態にて、帆布の動きを阻止し
、さらに型付治具がリブ溝より離脱した後は、帆布の型
付を維持するために細線状の浮上り阻止用治具にて帆布
の動きを阻止し、この状態にて帆布の動きを、さらに充
Ｊｎを目的とする未加硫ゴムシートの一部にて帆布を押
え込み、未加硫ゴムシートの加圧充填作業と時を同じく
して一作業の邪魔となる細線状の浮き上り阻止治具の抜
去を進行せしめたものである。(Effects of the Invention) In covering the surface of the rib group extending in the longitudinal direction of the belt on the lower surface of the belt with a highly rigid canvas, the main focus of the invention is to cover the canvas with a canvas that maintains an accurate rib shape. In particular, by matching the elasticity of the stretchable canvas to the longitudinal direction of the V-rib, we ensured good flexibility to be able to accommodate the small diameter pulleys of the ribbed belt, and also matched the elasticity of the canvas to the belt's By arranging the ribs in the longitudinal direction, it is necessary to use at least two shaping jigs to avoid the difficulty of shaping in the width direction of the belt. The molding jig prevents the movement of the canvas by holding the canvas inside the rib groove, and after the molding jig leaves the rib groove, a thin wire is used to maintain the molding of the canvas. The movement of the canvas is prevented using a floating prevention jig, and in this state, the canvas is further held down with a part of an unvulcanized rubber sheet for the purpose of filling. At the same time as the pressurized filling of the rubber sheet, the removal of a thin wire-like lifting prevention jig that was an obstacle to the work was proceeded.
この発明は、全てベルト巾方向に即１性を有し、型付作
業に困難性を内在せしめた帆布をして、多段に亘る型付
は作業のために効果的に型付き帆布の動きを阻止せしめ
ることにより、連続して正確なる形状を保持した■リブ
ドベルトを製造することができる。In this invention, all canvases have uniformity in the width direction of the belt, making it difficult to type the canvas, and the multi-stage patterning effectively controls the movement of the patterned canvas for the work. By blocking the belt, it is possible to manufacture a ribbed belt that continuously maintains an accurate shape.
第１図は帆布付きリブ型付体の円筒モールドを用いての
予備成型工程を示す断面図、第２図は帆布付きリブ型付
体の一部の斜視図、第３図は帆布付きリブ型付体の平板
モールドを用いて予備成型工程を示すモールド一部分の
斜視図、第４図は未加硫ベルト成型体の加硫成型工程に
おけるリブ溝付金型の嵌合直前の工程を示す部分断面図
、第５図はその後の加硫成型工程完了時の第４図に相当
する図、第６図は■リブドベルト一部の斜視図である。
図中、１，１・・・・・・金型（モールド）２・・・・
・リブ溝
４・・・・ゴム付伸縮性帆布
５・・・・・・長手型付治具
６・・・・・・細線状の浮上り阻止治具７・・・・・・
未加硫ゴムシート
８・・・・・・押圧ロール
９・・・・・帆布付きリブ型付体
１４・・・・・・未加硫ベルト構成体
第
図
４コ゛ム付伸縮性帆布
９帆布付きリブ型付体
１４未加硫ベルト構成体
１８ ｖリフ下ベルト
８・・・・・Ｖ
ノブドベルト
第
４
図
６
第
図
８Fig. 1 is a sectional view showing the preliminary molding process of a rib-type body with a canvas using a cylindrical mold, Fig. 2 is a perspective view of a part of the rib-type body with a canvas, and Fig. 3 is a rib-type with a canvas. A perspective view of a part of the mold showing the preforming process using a flat plate mold with an attached body, and FIG. 4 is a partial cross section showing the process immediately before fitting the rib-grooved mold in the vulcanization molding process of the unvulcanized belt molded body. 5 is a view corresponding to FIG. 4 when the subsequent vulcanization molding process is completed, and FIG. 6 is a perspective view of a part of the ribbed belt. In the figure, 1, 1... Mold 2...
・Rib groove 4...Elastic canvas with rubber 5...Longitudinal mold attachment jig 6...Thin line-shaped lifting prevention jig 7...
Unvulcanized rubber sheet 8...Press roll 9...Ribbed body with canvas 14...Unvulcanized belt structure Figure 4 Elastic canvas with comb 9 With canvas Rib-type attached body 14 Unvulcanized belt structure 18 v Riff lower belt 8...V Knobbed belt No. 4 Fig. 6 Fig. 8
Claims (2)
致せしめてゴム付伸縮性帆布をモールド上に配し、帆布
の端部より、順次リブ溝内への少なくとも二本の型付治
具にて帆布の型付作業を、一本の型付作業時、他方の治
具はリブ溝内にて型付け状態を維持しているよう交互に
行い、型付け後の帆布はリブ溝内に細線状の浮上り阻止
用治具により押え込まれた状態で、充填用未加硫ゴムシ
ートの帆布への押え付状況下にて、前記浮上り阻止用治
具のリブ溝よりの引き抜きと共に未加硫ゴムシートのリ
ブ溝内への加圧充填による帆布付きリブ型付体の予備成
型の完了後、別途形成した成型モールド上の未加硫ベル
ト構成体とこの帆布付きリブ型付体を重ね合せ、無端状
の未加硫ベルト成型体の形成後、加硫、カット作業が行
われるＶリブドベルトの製造方法。(1) Arrange a rubberized elastic canvas on the mold with the stretching direction aligned with the length direction of the rib groove group of the mold, and at least two molds are sequentially placed into the rib grooves from the end of the canvas. Stamping the canvas using jigs is carried out alternately so that while one jigs are working, the other jig maintains the embossed state within the rib grooves, and the canvas after embossing is placed inside the rib grooves. While the unvulcanized rubber sheet for filling is being pressed against the canvas while being held down by the thin line-shaped floating prevention jig, the unvulcanized rubber sheet for filling is pulled out from the rib groove and the unvulcanized rubber sheet is pressed down. After completing the preforming of the canvas-covered rib-shaped body by pressurizing and filling the rib grooves of the vulcanized rubber sheet, the canvas-covered rib-shaped body is overlapped with the unvulcanized belt structure on a separately formed mold. A method for manufacturing a V-ribbed belt, in which after forming an endless unvulcanized belt molding, vulcanization and cutting operations are performed.
さ方向に４０％以上の伸縮性を保有している請求項１記
載のＶリブドベルトの製造方法。(2) The method for manufacturing a V-ribbed belt according to claim 1, wherein the stretchable canvas covering the belt rib portion has a stretchability of 40% or more in the longitudinal direction of the belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26458389A JP2628090B2 (en) | 1989-10-11 | 1989-10-11 | Method for manufacturing V-ribbed belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26458389A JP2628090B2 (en) | 1989-10-11 | 1989-10-11 | Method for manufacturing V-ribbed belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03126533A true JPH03126533A (en) | 1991-05-29 |
| JP2628090B2 JP2628090B2 (en) | 1997-07-09 |
Family
ID=17405311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26458389A Expired - Fee Related JP2628090B2 (en) | 1989-10-11 | 1989-10-11 | Method for manufacturing V-ribbed belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2628090B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07504736A (en) * | 1992-03-02 | 1995-05-25 | デイコ プロダクツ，インコーポレイテッド | Toothed belt structure mainly formed of thermoplastic material and method for manufacturing the same |
| JP2010125725A (en) * | 2008-11-28 | 2010-06-10 | Mitsuboshi Belting Ltd | Method of manufacturing wrapped v-belt |
-
1989
- 1989-10-11 JP JP26458389A patent/JP2628090B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07504736A (en) * | 1992-03-02 | 1995-05-25 | デイコ プロダクツ，インコーポレイテッド | Toothed belt structure mainly formed of thermoplastic material and method for manufacturing the same |
| JP2010125725A (en) * | 2008-11-28 | 2010-06-10 | Mitsuboshi Belting Ltd | Method of manufacturing wrapped v-belt |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2628090B2 (en) | 1997-07-09 |
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