JPH0353107B2 - - Google Patents
Info
- Publication number
- JPH0353107B2 JPH0353107B2 JP61047695A JP4769586A JPH0353107B2 JP H0353107 B2 JPH0353107 B2 JP H0353107B2 JP 61047695 A JP61047695 A JP 61047695A JP 4769586 A JP4769586 A JP 4769586A JP H0353107 B2 JPH0353107 B2 JP H0353107B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- rope
- unvulcanized rubber
- unvulcanized
- tensile
- 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.)
- Expired - Lifetime
Links
- 229920001971 elastomer Polymers 0.000 claims description 41
- 239000005060 rubber Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 description 9
- 239000011295 pitch Substances 0.000 description 5
- 239000004636 vulcanized rubber Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 241001441571 Hiodontidae Species 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
- B29D29/103—Multi-ribbed driving belts
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は複数個のＶベルトを上部で一体に連結
した構造の圧縮部分，抗張体部分ならびに引張部
分よりなる多リブベルトの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a multi-rib belt having a structure in which a plurality of V-belts are integrally connected at the upper part, and is composed of a compression section, a tensile section, and a tension section.
（従来の技術）
従来、多リブベルトの製造方法としては例えば
米国特許第3822516号明細書（特開昭52−17552号
公報参照）の如く加硫ベルトスリーブの外周面を
Ｖ形グラインダーで研摩する方法、米国特許第
3839116号明細書（特公昭52−15310号公報参照）
の如く、複数のリブを設けた母型上に伸縮性帆布
を置き、次いでゴムシート，抗張体ロープを巻付
け、外側より圧縮加硫してポリＶベルトを製造す
る方法などが知られている。(Prior Art) Conventionally, as a method of manufacturing a multi-rib belt, there has been a method of grinding the outer circumferential surface of a vulcanized belt sleeve with a V-shaped grinder, as disclosed in U.S. Pat. , U.S. Patent No.
Specification No. 3839116 (see Japanese Patent Publication No. 15310/1983)
There is a known method of manufacturing a poly V belt by placing an elastic canvas on a matrix having multiple ribs, then wrapping a rubber sheet and tensile rope around it, and compression-vulcanizing it from the outside. There is.
（発明が解決しようとする問題点）
しかし、前者の方法ではリブ形成のために多量
の加硫ゴムスクラツプが発生し、又、多大の研摩
時間を必要とし非効率的な欠点があり、一方、後
者の方法では加硫中に抗張体ロープがベルト圧縮
部に落ち込みロープの配列が不均一になつてベル
ト走行時、早期破損の原因となり、又、加硫時、
未加硫ゴムシートと母型の間の空気が抜けなくな
り、リブ形状不良の原因となる問題があり、何れ
も不完全な状態を脱却するに至つていない。(Problems to be Solved by the Invention) However, the former method generates a large amount of vulcanized rubber scrap to form the ribs and requires a large amount of polishing time, making it inefficient. In this method, the tensile rope falls into the belt compression part during vulcanization, and the rope becomes unevenly arranged, causing early breakage when the belt runs.
There is a problem in that the air between the unvulcanized rubber sheet and the matrix cannot escape, causing a defective rib shape, and in both cases, the incomplete state has not been overcome.
本発明は、かかる従来方法の諸事情に鑑み、そ
の問題点を解消すべく種々検討を重ねた結果、到
達するに至つたもので、抗張体ロープを均一に配
列したリブ形状のよい多リブベルトを得ることな
らびに該ベルトのリブ形成時における加硫ゴムス
クラツプおよび研摩時間を大幅に減少せしめ、効
率のよい製造方法を得ることを目的とするものも
のである。 In view of the various circumstances of the conventional method, the present invention was achieved as a result of various studies to solve the problems, and is a multi-ribbed belt with a good rib shape in which tensile ropes are uniformly arranged. The object of the present invention is to obtain an efficient manufacturing method by significantly reducing the vulcanized rubber scraping and polishing time during rib formation of the belt.
（問題点を解決するための手段）
即ち、本発明の特徴とするところは、円筒状ド
ラムの外周面に、円周方向にのびる複数のＶ型溝
を有し、該溝の底部に一溝当たり少なくとも１個
の空気抜き穴を設けた母型モールドを設置し、該
母型モールド上にJISムーニー粘度計による
ML(1+4)100℃の値が20〜95の未加硫ゴムシートを
巻付け、その上に100℃×30分熱収縮力が
0.8grf／ｄ以下の抗張体ロープをロープ径の1.7倍
以下のスピニングピツチでスパイラル状に巻付
け、更に１〜複数層のゴム付帆布を巻き付けて無
端状未加硫ベルトスリーブを形成し、次いでその
外周面より円筒状の金属性バンド又はゴム製ジヤ
ケツトよりなる押圧体で加熱加圧し、未加硫ゴム
を母型モールドのＶ型溝に充填せしめ、リブ形状
を形成することにある。(Means for Solving the Problems) That is, the present invention is characterized by having a plurality of V-shaped grooves extending in the circumferential direction on the outer peripheral surface of the cylindrical drum, and one groove at the bottom of the grooves. A mother mold with at least one air vent hole per hole is installed, and a JIS Mooney viscometer is used on the mother mold.
ML (1+4) Wrap an unvulcanized rubber sheet with a value of 20 to 95 at 100℃, and apply heat shrinkage force on it for 30 minutes at 100℃.
A tensile rope of 0.8grf/d or less is spirally wound with a spinning pitch of 1.7 times the rope diameter or less, and one to multiple layers of rubberized canvas are further wound to form an endless unvulcanized belt sleeve. Next, the outer circumferential surface of the mold is heated and pressed with a pressing member made of a cylindrical metal band or a rubber jacket, and the unvulcanized rubber is filled into the V-shaped groove of the mother mold to form a rib shape.
（作用）
上記の製造方法を使用することにより、母型モ
ールドの上に巻き付けられた無端状未加硫ゴムシ
ートは加硫時に流動状態を呈し、円筒状押圧体の
押圧力によつて母型モールドのＶ型溝の方向に向
かつて押圧され、該Ｖ型溝内に流入して溝内を充
填する。(Function) By using the above manufacturing method, the endless unvulcanized rubber sheet wrapped around the mother mold exhibits a fluid state during vulcanization, and the pressing force of the cylindrical pressing body causes the endless unvulcanized rubber sheet to form a fluid state. It is pressed toward the V-shaped groove of the mold, flows into the V-shaped groove, and fills the groove.
このとき、未加硫ゴムシートと母型モールドの
Ｖ型溝との間に存在する空気は母型モールドの空
気抜き穴を通して逃げ、未加硫流動ゴムの流入を
スムーズとする。 At this time, the air existing between the unvulcanized rubber sheet and the V-shaped groove of the mother mold escapes through the air vent hole of the mother mold, allowing smooth flow of the unvulcanized fluid rubber.
又、抗張体ロープが所要の熱収縮応力を具有す
ることにより加硫時の熱収縮は少なくロープの位
置変化も起こることがない。 Furthermore, since the tensile rope has the required heat shrinkage stress, heat shrinkage during vulcanization is small and the position of the rope does not change.
（実施例）
以下、更に本発明に係る多リブベルトの製造方
法につき、添付図面を参照しつつ詳細に説明す
る。(Example) Hereinafter, a method for manufacturing a multi-rib belt according to the present invention will be described in detail with reference to the accompanying drawings.
第１図乃至第３図は本発明に係る製造方法の成
形及び加硫各工程の態様を示す横断面図である。 1 to 3 are cross-sectional views showing aspects of the molding and vulcanization steps of the manufacturing method according to the present invention.
これら各図において１は円筒状ドラム、２は円
周方向に複数のＶ型溝Ｇと帯状突起Ｔを交互に設
けた硬度50（JIS）以上のゴム製母型モールドで、
該母型モールド２の溝Ｇの底部には空気抜き穴３
が一溝当たり１個設けられている。 In each of these figures, 1 is a cylindrical drum, 2 is a rubber mother mold with a hardness of 50 (JIS) or higher, which is provided with a plurality of V-shaped grooves G and band-shaped protrusions T alternately in the circumferential direction.
An air vent hole 3 is provided at the bottom of the groove G of the mother mold 2.
One groove is provided for each groove.
なお、この空気抜き穴３は１個に限らず必要に
応じて２個以上設けてもよいことは勿論である。 Note that the number of air vent holes 3 is not limited to one, and it goes without saying that two or more may be provided as necessary.
そして、本発明方法は、かかるゴム製母型モー
ルド２を使用し、先ず、成形工程において、第１
図に示す如く円筒状ドラム１の上に上記母型モー
ルド２を被覆し、この母型モールド２の突起Ｔ上
にNR（天然ゴム），SBR（スチレン・ブタジエン
ゴム），CR（クロロプレンゴム）などの単一材又
はこれらを適宜ブレンドした一定厚みの未加硫ゴ
ムシート４を無端状に巻付ける。 Then, the method of the present invention uses such a rubber mother mold 2, and first, in the molding process, the first
As shown in the figure, the cylindrical drum 1 is covered with the master mold 2, and the protrusions T of the master mold 2 are coated with NR (natural rubber), SBR (styrene-butadiene rubber), CR (chloroprene rubber), etc. An unvulcanized rubber sheet 4 made of a single material or an appropriate blend of these and having a constant thickness is wrapped endlessly.
なお、このとき、前記未加硫ゴムシート４は、
JISムーニー粘度計によりムーニー値、即ち、
ML(1+4)100℃が20〜95であることが必要である。
ここで、ムーニー値が20未満であると、次いでス
ピニングする抗張体ロープが未加硫ゴム中に不均
一に埋設し、成形時ベルト張力の均一な維持がで
きなくなる。又、一方、ムーニー値が95以上で
は、加硫時におけるゴムの流入が悪くなり、リブ
形状不良になるため、前記20〜95が好適である。 At this time, the unvulcanized rubber sheet 4 is
Mooney value by JIS Mooney viscometer, i.e.
ML (1+4) 100℃ needs to be 20-95.
Here, if the Mooney value is less than 20, the tensile rope to be spun next will be embedded unevenly in the unvulcanized rubber, making it impossible to maintain uniform belt tension during molding. On the other hand, if the Mooney value is 95 or more, the inflow of rubber during vulcanization will be poor and the shape of the ribs will be poor, so the above-mentioned range of 20 to 95 is preferable.
次いで、前記無端状に巻き付けられた未加硫ゴ
ムシート４の上に抗張体ロープ５を巻付けるが、
孔張体ロープ５は例えばポリエステル，ナイロ
ン，ケブラー（商品名），ガラス繊維等からなる
ロープで、100℃×30分後の熱収縮力が0.8grf／
ｄ（ｄ：ロープのデニール数）以下のロープを、
ロープ径の1.7倍以下のスピニングピツチでスパ
イラル状に巻付けることが必要である。 Next, a tensile rope 5 is wrapped around the unvulcanized rubber sheet 4 wrapped endlessly.
The porous rope 5 is a rope made of, for example, polyester, nylon, Kevlar (trade name), glass fiber, etc., and has a heat shrinkage force of 0.8grf/ after 30 minutes at 100°C.
d (d: rope denier) or less rope,
It is necessary to wind the rope in a spiral with a spinning pitch that is less than 1.7 times the rope diameter.
若し、前記抗張体ロープのスピニングピツチ、
即ち、ロープ同志の間隔がロープ径の1.7倍を越
えると、ロープの配列が次第に不均一になるばか
りでなく、ベルト１本当たりの抗張体ロープ本数
が不足してベルト強力が低下するため、1.7倍以
下のスピニングピツチが好適である。そして更に
上記抗張体ロープ５の上に前記未加硫ゴムシート
４と同質の一定厚みの薄い未加硫ゴムシート４′
を巻付け、最後に１〜複数層のゴム付帆布６を巻
付けて、成形工程が完了する。 If the spinning pitch of the tensile rope,
In other words, if the distance between the ropes exceeds 1.7 times the rope diameter, not only will the arrangement of the ropes gradually become uneven, but the number of tensile ropes per belt will be insufficient and the strength of the belt will decrease. A spinning pitch of 1.7 times or less is suitable. Furthermore, a thin unvulcanized rubber sheet 4' having a constant thickness and the same quality as the unvulcanized rubber sheet 4 is placed on the tensile rope 5.
The molding process is completed by wrapping one or more layers of rubberized canvas 6.
かくして、以上より得られた未加硫ベルトスリ
ーブは以後、次の加硫工程に移され、加硫され
る。 The unvulcanized belt sleeve thus obtained is then transferred to the next vulcanization step and vulcanized.
加硫工程では、第２図，第３図に示す如く、未
加硫ベルトスリーブの外周面に例えば硬度50以上
のゴム製円筒ジヤケツト、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ーなどで、第２図の如
くゴム付帆布６の上面より矢印Ａ方向に加圧加熱
することにより行われるが、このとき、未加硫ゴ
ムシート４は流動状態を呈し、押圧体Ｐの押圧力
と相俟つて矢印Ｂ方向、即ち、母型モールド２の
Ｖ形溝Ｇに向つて押圧され、母型モールド２の帯
状突起Ｔが未加硫ゴム４中に喰い込んで未加硫ゴ
ム４がＶ溝Ｇ中に充填され、同時に上下未加硫ゴ
ムシート４，４′の流動化した未加硫ゴムが抗張
体ロープ５の周囲を埋めて、上面にゴム付帆布６
が貼着された引張部分と、下面にＶリブを有する
圧縮部分を各々形成し、多リブベルトを形成す
る。 In the vulcanization process, as shown in Figures 2 and 3, a pressing body P made of, for example, a rubber cylindrical jacket with a hardness of 50 or more or a thin stainless steel band is fitted onto the outer peripheral surface of the unvulcanized belt sleeve, and then high pressure steam is applied. Alternatively, this can be carried out by applying pressure and heating in the direction of arrow A from the upper surface of the rubber covered canvas 6 using a pipe heater, etc., as shown in FIG. Together with the pressing force of , the rubber is pressed in the direction of arrow B, that is, toward the V-shaped groove G of the mother mold 2, and the band-like protrusion T of the mother mold 2 bites into the unvulcanized rubber 4, causing it to become unvulcanized. The rubber 4 is filled into the V-groove G, and at the same time, the fluidized unvulcanized rubber of the upper and lower unvulcanized rubber sheets 4, 4' fills the area around the tensile rope 5, and a rubberized canvas 6 is formed on the upper surface.
A multi-rib belt is formed by forming a tensile part to which is attached and a compression part having a V-rib on the lower surface.
この際、未加硫ゴムシート４とＶ型溝Ｇの間に
存在する空気は母型モールド２の空気抜き穴３よ
り外部に逃げていくため、未加硫ゴムの流入がス
ムーズになり、正確なリブ形状が得られる。又、
抗張体ロープ５の100℃×30分の熱収縮応力が
0.8grf／ｄ以上では加熱によりロープ自体が熱収
縮し、ロープ並びが悪くなるので、前述のように
熱収縮応力は0.8grf／ｄ以下が必要で、このよう
な熱収縮応力の抗張体ロープを使用することによ
り、ロープの位置変化、即ち、ゴム中への落ち込
みが防止できる。 At this time, the air existing between the unvulcanized rubber sheet 4 and the V-shaped groove G escapes to the outside through the air vent hole 3 of the mother mold 2, so that the unvulcanized rubber flows in smoothly and accurately. A rib shape is obtained. or,
The heat shrinkage stress of tensile rope 5 at 100℃ x 30 minutes is
If it exceeds 0.8grf/d, the rope itself will shrink due to heating and the rope alignment will deteriorate, so as mentioned above, the heat shrinkage stress must be 0.8grf/d or less, and tensile ropes with such heat shrinkage stress By using this, it is possible to prevent the rope from changing its position, that is, from falling into the rubber.
かくして、加硫後、押圧体Ｐを外し、加硫ベル
トスリーブを母型モールド２より取り外すと、第
４図の如き抗張体ロープ５を上下未加硫ゴム４，
４′による加硫ゴム７，７′中に埋設し、上部にゴ
ム付帆布６が貼着され、下面に複数リブを一体に
加硫形成したローエツジタイプの多リブベルトａ
を得ることができる。 After vulcanization, when the pressing body P is removed and the vulcanized belt sleeve is removed from the master mold 2, the tensile rope 5 as shown in FIG.
A low edge type multi-rib belt a which is embedded in vulcanized rubber 7, 7' by 4', has a rubberized canvas 6 attached to the upper part, and has multiple ribs integrally vulcanized on the lower surface.
can be obtained.
なお、ここで未加硫ゴムシート４を巻付ける前
にゴム付帆布６を巻付け、以下同様の工程をとる
ことによりラツプタイプの多リブベルトを得るこ
ともできる。 Note that a wrap-type multi-rib belt can also be obtained by wrapping a rubberized canvas 6 before wrapping the unvulcanized rubber sheet 4 and following the same steps.
又、前記未加硫ゴムシート４中にリブの耐亀裂
性を向上すべく短繊維群を横方向に混入配向すれ
ば、より補強されたベルトを形成することも可能
である。 Moreover, if short fibers are mixed and oriented in the lateral direction in the unvulcanized rubber sheet 4 in order to improve the crack resistance of the ribs, it is also possible to form a more reinforced belt.
更に前記説明では、ゴム付帆布６の下面に一定
厚みの薄い未加硫ゴムシート４′を使用している
が、未加硫ゴムシート４単独でもよく、押圧力に
よりこの未加硫ゴムシートをロープ間より上面に
流出せしめ抗張体ロープ周りを部分的に被覆した
引張部分を形成することもできる。 Furthermore, in the above description, a thin unvulcanized rubber sheet 4' with a certain thickness is used on the lower surface of the rubberized canvas 6, but the unvulcanized rubber sheet 4 may be used alone, and the unvulcanized rubber sheet 4 is It is also possible to form a tensile portion that flows out from between the ropes to the upper surface and partially covers the tensile rope.
（発明の効果）
以上の如く、本発明多リブベルトの製造方法
は、Ｖ形溝に少なくとも１個の空気抜き穴を設け
た弾性母型モールドに所定のムーニー粘度を有す
る未加硫ゴムシート、その上に熱収縮力の小さい
抗張体ロープを所定間隔のスピニングピツチで巻
き付け、外面より加圧加熱してＶ形溝に未加硫ゴ
ムを流入し、充填せしめてＶリブ部を形成するこ
とにより、未加硫ゴムの流入がスムーズとなり、
又、従来のＶ形研摩と異なりゴム表面が均一で、
かつ正確なリブ形状が得られ、しかも抗張体ロー
プの配列が均一であるため、ベルト強力の低下の
懸念もなく、ベルト寿命を大幅に向上でき、更に
リブ形成時における加硫ゴムスクラツプの発生を
皆無にし、リブ研削時間が減少し、大幅なコスト
ダウンを図ることができるなどの諸効果があり、
工業的方法としてその有用性が今後、大きく期待
される方法である。(Effects of the Invention) As described above, the method for manufacturing a multi-rib belt of the present invention involves placing an unvulcanized rubber sheet having a predetermined Mooney viscosity in an elastic matrix mold having at least one air vent hole in a V-shaped groove; By winding a tensile rope with a small heat shrinkage force around spinning pitches at predetermined intervals, applying pressure and heating from the outside surface, and filling the V-shaped groove with unvulcanized rubber, the V-rib portion is formed. The unvulcanized rubber flows smoothly,
Also, unlike conventional V-shaped polishing, the rubber surface is uniform,
Moreover, since accurate rib shape can be obtained and the tensile ropes are arranged uniformly, there is no concern that the belt strength will decrease, and the belt life can be greatly improved.Furthermore, the occurrence of vulcanized rubber scrap when forming the ribs can be avoided. It has various effects such as eliminating the need for grinding, reducing rib grinding time, and significantly reducing costs.
This method is highly expected to be useful as an industrial method in the future.
第１図は本発明に係る多リブベルト製造方法の
成形態様を示す部分横断面図、第２図及び第３図
は同方法の加硫態様を示す部分横断面図、第４図
は本発明方法によつて得られた多リブベルトの部
分斜視図である。
１……円筒状ドラム、２……母型モールド、３
……空気抜き穴、４，４′……未加硫ゴムシート、
５……抗張体ロープ、６……ゴム付帆布、７，
７′……加硫ゴム、Ｐ……押圧体、Ｇ……母型モ
ールドＶ型溝、Ｔ……母型モールド突起、ａ……
多リブベルト。
FIG. 1 is a partial cross-sectional view showing the forming mode of the multi-rib belt manufacturing method according to the present invention, FIGS. 2 and 3 are partial cross-sectional views showing the vulcanization mode of the same method, and FIG. 4 is the method of the present invention. FIG. 2 is a partial perspective view of a multi-rib belt obtained by. 1... Cylindrical drum, 2... Mother mold, 3
...Air vent hole, 4,4'...Unvulcanized rubber sheet,
5... Tensile rope, 6... Rubber canvas, 7,
7'... Vulcanized rubber, P... Pressing body, G... Master mold V-shaped groove, T... Master mold projection, a...
Multi-ribbed belt.
Claims (1)
複数のＶ型溝を有し、該Ｖ型溝の底部に一溝当た
り少なくとも１個の空気抜き穴を設けた母型モー
ルドを設置し、該母型モールド上に、JISムーニ
ー粘度計によるML(1+4)100℃の値が20〜95の未加
硫ゴムシートを巻付け、その上に、100℃×30分
熱収縮力が0.8grf／ｄ以下の抗張体ロープをロー
プ径の1.7倍以下のスピニングピツチでスパイラ
ル状に巻付け、更に１〜複数層のゴム付帆布を巻
き付けて無端状未加硫ベルトスリーブを形成し、
次いでその外周面より円筒状押圧体で加熱加圧
し、未加硫ゴムを母型モールドＶ型溝に流入充填
せしめ、リブ形状を形成することを特徴とする多
リブベルトの製造方法。1. A master mold having a plurality of V-shaped grooves extending in the circumferential direction on the outer circumferential surface of a cylindrical drum and having at least one air vent hole per groove at the bottom of the V-shaped grooves is installed, An unvulcanized rubber sheet with a JIS Mooney viscometer ML (1+4) value of 20 to 95 at 100℃ is wrapped around the mother mold, and a heat shrinkage force of 0.8grf is wrapped on top of the sheet for 30 minutes at 100℃. A tensile rope of /d or less is spirally wound with a spinning pitch of 1.7 times the rope diameter or less, and one to multiple layers of rubberized canvas are further wound to form an endless unvulcanized belt sleeve,
A method for manufacturing a multi-ribbed belt, characterized in that the outer circumferential surface of the belt is heated and pressurized using a cylindrical pressing body to cause unvulcanized rubber to flow into and fill the V-shaped grooves of the mother mold to form a rib shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4769586A JPS62204932A (en) | 1986-03-04 | 1986-03-04 | Manufacture of multi-ribbed belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4769586A JPS62204932A (en) | 1986-03-04 | 1986-03-04 | Manufacture of multi-ribbed belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62204932A JPS62204932A (en) | 1987-09-09 |
| JPH0353107B2 true JPH0353107B2 (en) | 1991-08-14 |
Family
ID=12782416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4769586A Granted JPS62204932A (en) | 1986-03-04 | 1986-03-04 | Manufacture of multi-ribbed belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62204932A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020158629A1 (en) * | 2019-01-28 | 2020-08-06 | 三ツ星ベルト株式会社 | V-ribbed belt and method for producing same |
| JP2021071194A (en) * | 2019-01-28 | 2021-05-06 | 三ツ星ベルト株式会社 | V-ribbed belt and manufacturing method thereof |
-
1986
- 1986-03-04 JP JP4769586A patent/JPS62204932A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020158629A1 (en) * | 2019-01-28 | 2020-08-06 | 三ツ星ベルト株式会社 | V-ribbed belt and method for producing same |
| JP2021071194A (en) * | 2019-01-28 | 2021-05-06 | 三ツ星ベルト株式会社 | V-ribbed belt and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62204932A (en) | 1987-09-09 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |