JPS5833443A - Preparation of toothed belt - Google Patents
Preparation of toothed beltInfo
- Publication number
- JPS5833443A JPS5833443A JP13295981A JP13295981A JPS5833443A JP S5833443 A JPS5833443 A JP S5833443A JP 13295981 A JP13295981 A JP 13295981A JP 13295981 A JP13295981 A JP 13295981A JP S5833443 A JPS5833443 A JP S5833443A
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- reinforcing cloth
- reinforcing
- reinforcing fabric
- 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
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
- B29D29/08—Toothed driving belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は歯部表面を補強布をもって被覆せしめたポリウ
レタン製歯付ベルトの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a polyurethane toothed belt whose toothed surfaces are covered with a reinforcing cloth.
特にベルトの製造過程中にて補強布を歯付ベルトの歯形
表面部に正確に付着せしめることにより、従来この種め
ベルトにあって多発していた歯元クラックを71!実に
防止してベルトライフを増大せしめること、また正確な
ベルト歯部を形成せしめることにより円滑なベルト駆動
を達し得るようにしたものである。In particular, by accurately attaching the reinforcing cloth to the tooth profile surface of the toothed belt during the belt manufacturing process, we can eliminate tooth base cracks that frequently occur in conventional seed belts! In fact, the belt life is increased by preventing this, and by forming accurate belt teeth, smooth belt driving can be achieved.
従来、ポリフレクン製歯付きベルトの製造法としては外
周面軸方向に複数の歯形溝を有する円筒状内金型の外周
面に補強布を無端状に巻付けるか、或は補強布を内金型
の歯形溝に沿わせて無端状に巻付け、その上にロープ抗
張体をスパイラルに巻付け、ついでこの内金型の外側に
円筒状外金型を同心状にセットし、内金型と外金型との
空隙部に液状ウレタンエラストマーを注入し、ウレタン
エラストマーを抗張体間を通して内金型の歯形溝に充填
せしめてベルトの歯部を形成せしめると共に抗張体を埋
設せしめた状態にてベルト引張部を同時に形成せしめ、
フレクンエラストマー硬化後金型よりベルト成形体を取
外し、このベルト成形体を円周方向に所定幅に輪切し、
複数本の歯付ベルトを得る方法が最も一般的な製造法で
あるが、ロープ抗張体の捲回時、或は液状ウレタンエラ
ストマーの歯部への充填時に補強布の位置ずれが発生し
、ベルト歯部表面に気泡が発生したり、歯部表面の補強
布にしわ、たるみなどが発生し、円滑なベルト駆動を望
む上で最も重要な個所たるベルト歯形部の均一かつ正確
゛な成形作業に多々問題点があった。Conventionally, the manufacturing method for polyflex toothed belts has been to endlessly wrap a reinforcing cloth around the outer circumferential surface of a cylindrical inner mold that has a plurality of tooth grooves in the axial direction of the outer circumferential surface, or to wrap the reinforcing cloth around the inner mold. The rope is wound endlessly along the tooth grooves, and the rope tensile body is spirally wound on top of it.A cylindrical outer mold is then set concentrically on the outside of this inner mold, and the inner mold and Liquid urethane elastomer is injected into the gap between it and the outer mold, and the urethane elastomer is passed between the tensile members and filled into the tooth grooves of the inner mold to form the teeth of the belt, and the tensile member is embedded. to form a belt tension portion at the same time,
After the flexible elastomer hardens, the belt molded body is removed from the mold, and the belt molded body is cut into rings of a predetermined width in the circumferential direction.
The most common manufacturing method is to obtain multiple toothed belts, but the reinforcing fabric may become misaligned when winding the rope tension member or filling the teeth with liquid urethane elastomer. Air bubbles may occur on the surface of the belt teeth, wrinkles or sag may occur in the reinforcing cloth on the surface of the teeth, and uniform and accurate shaping of the belt tooth profile is the most important area for smooth belt drive. had many problems.
本発明は補強布の乱れによって発生する正確なベルト歯
部の成形作業の失敗を未然に防止すると害を主眼として
、補強布を型付けして、あらかじめ歯形型付き補強布を
形成し、ついでこれを内金型歯部に沿って正確に位置せ
しめた構成にある。The present invention aims to prevent the failure of the accurate forming operation of the belt teeth caused by the disorder of the reinforcing cloth, and the reinforcing cloth is molded to form a reinforcing cloth with a tooth pattern in advance, and then this is The structure is precisely positioned along the teeth of the inner mold.
つぎに本発明に係るポリフレクン製歯付きベルトの製造
法を図面を用い乍ら説明する。Next, a method for manufacturing a polyflex toothed belt according to the present invention will be explained with reference to the drawings.
まず第1工程として、第1図に例示するとおり、内側当
接面にそれぞれ入れ子状の複数の歯形(3)を設けた上
下1対の型付盤(1)、(2)の間に捲縮ナイロン経糸
と通常のナイロン緯糸で織成した伸縮性帆布あるいは不
織布、編布などからなる補強布(4)を、特に補強布(
4)が伸縮性帆布の場合、帆布の伸縮方向性を下側型付
盤(2)の歯形(3)(3)と直交状態に配する。補強
布(4)にポリウレタンニジストマーを全曲に塗布し、
この補強布(4)を上下型付盤(1)(2)にて挾持し
、外部より所定時間加圧加熱し、補強布(4)に8透し
た保形用のポリウレタンニジストマーが硬化して歯形型
付き補強布(4a)が得られる(第2図参照)。First, as the first step, as illustrated in FIG. A reinforcing fabric (4) made of stretchable canvas, non-woven fabric, knitted fabric, etc. woven with shrunk nylon warp and normal nylon weft is used, especially reinforcing fabric (4).
If 4) is a stretchable canvas, the stretch direction of the canvas is arranged perpendicular to the tooth profile (3) (3) of the lower molding board (2). Apply polyurethane nystomer to the reinforcing cloth (4) on all songs,
This reinforcing cloth (4) is held between upper and lower molding plates (1) and (2) and heated under pressure from the outside for a predetermined period of time to harden the shape-retaining polyurethane nidistomer that has passed through the reinforcing cloth (4). A reinforcing cloth (4a) with a tooth pattern is obtained (see FIG. 2).
つぎの第2工程は前記歯形型付き補強布(4a)の両端
の歯溝部分を歯形繋ぎ片にて強化固定せしめ、歯形補強
布の一段の保形効果を目的としたもので、第3図に示す
ごとく型付盤の上盤(1)を外し、歯形型付き補強布を
付着せしめたままの下側型付盤(2)の両端部を1対の
端板(6)(6)による下側型付盤(2)へのボルト(
7)などの締着により閉鎖し、第4図に示すような、あ
らかじめ成形された歯形フレタン棒状体(8)を−木兄
、下側型付盤(2)の歯溝中央部に、即ち歯形型付き補
強布(4a)の中央部にそれぞれ嵌め込み、これにより
前記端板(6)と嵌入せしめた歯形棒状体(8)の端面
間に空隙部(9)を派生せしめ(第゛8図参照)、つい
でこの空隙部(9)にポリウレタンニジストマーを注入
し、下側型付盤(2)の上に土板00を載せ、これを外
部より加圧加熱して空隙部(9)K注入した:r−ラス
トマーを硬化せしめてのち、上板(10,歯形フレタン
棒状体(8)と順次取外して、第5図に示す両端溝部分
をウレタン製歯形繋ぎ片(5)(5)にて保形固定せし
めた繋ぎ片付き歯形補強布(41))が下側型付盤(2
)より収り外される。The next second step is to strengthen and fix the tooth groove portions at both ends of the reinforcing fabric with tooth profile (4a) with tooth profile connecting pieces, and to further improve the shape retention effect of the tooth profile reinforcing fabric, as shown in Fig. 3. As shown in the figure, remove the upper plate (1) of the molding board, and attach both ends of the lower molding board (2) with the tooth-shaped reinforcing cloth still attached using a pair of end plates (6) (6). Bolts to the lower molding board (2) (
7), etc., and place a pre-formed tooth-shaped Frethane rod-shaped body (8) as shown in Fig. 4 in the center of the tooth groove of the lower molding plate (2), i.e. Each reinforcing cloth with a tooth profile (4a) is fitted into the center part thereof, thereby creating a gap (9) between the end plate (6) and the end face of the fitted tooth profile rod (8) (Fig. 8). ), then polyurethane distomer is injected into this void (9), the clay plate 00 is placed on the lower molding board (2), and this is heated under pressure from the outside to form the void (9) K. After curing the injected r-lastomer, remove the top plate (10) and the tooth-shaped urethane rod-shaped body (8) in sequence, and attach the grooves at both ends shown in Fig. 5 to the urethane tooth-shaped connecting pieces (5) (5). The tooth-shaped reinforcing cloth (41) with connecting piece which is fixed and shape-retaining is placed on the lower molding plate (2).
).
第3工程として、前記歯形型付き補強布(4b)を第6
図のように、外周全面軸方向に多数の歯形溝を設けた円
筒状内金型α′4に、内金型の歯形溝03部に予めポリ
ウレタンニジストマーを薄くスプレーして付着せしめた
後、内金型(2)の歯形溝03に補強布(4b)の歯形
部を合致せしめて、補強布(4b)の両端に形成せしめ
た歯形繋ぎ片(5)(5)を補強布と共に内金型の歯形
溝03内に強く押し込みながら内金型周面に無端状に巻
付ける。As a third step, the tooth-shaped reinforcing cloth (4b) is
As shown in the figure, a cylindrical inner mold α'4 having a large number of tooth-shaped grooves in the axial direction on the entire outer circumference is coated with a thin layer of polyurethane nystomer sprayed in advance on the tooth-shaped groove 03 portion of the inner mold. The tooth profile portions of the reinforcing cloth (4b) are matched with the tooth profile grooves 03 of the inner mold (2), and the tooth profile connecting pieces (5) (5) formed at both ends of the reinforcing cloth (4b) are inserted into the inner mold together with the reinforcing cloth. It is wrapped endlessly around the circumferential surface of the inner mold while being strongly pushed into the tooth-shaped groove 03 of the mold.
6′)発明にあっては補強布の歯形繋ぎ片部(5) (
5)を内金型溝部に押し込む方式を採用したので補強布
(4b)の内金型Q44外而への@前固定は簡易なもの
となり、その定着は強固確実なものとなる。6') In the invention, the tooth-shaped connecting piece (5) of the reinforcing cloth (
Since the method of pushing 5) into the groove of the inner mold is adopted, the reinforcing cloth (4b) can be easily fixed to the outer part of the inner mold Q44, and its fixation is strong and reliable.
第4工程として、内金型α4外周而に噛合状態をもって
巻きついた補強布(4b)の表面に公知の方法にてスチ
ールワイヤ、テトロン(商標名)、ナイロン繊維などの
低伸度高強力のロープ抗張体OQをスパイラルに春付け
る。As the fourth step, a low elongation, high strength material such as steel wire, Tetron (trade name), nylon fiber, etc. Attach the rope tension body OQ to the spiral spring.
かくして第5工程として繋ぎ片付き歯形型付き補強布(
4b)の外周面にロープ抗張体を巻き付けた内金型の外
側に同心状に円筒状外金型(図示省略)をセットし、内
外両金型の両端部は端壁をもって封鎖され、内外両全型
によって形成された空隙部に液状ウレタンエラストマー
を注入し、エラストマーは空隙部を満たし、ベルトの歯
部および引張部が充填成形され、所定時間の加熱により
加硫硬化が進行し、広幅の歯付ベルト成形体が形成され
る。Thus, in the fifth step, reinforcing cloth with a tooth pattern and a connecting piece (
4b) A cylindrical outer mold (not shown) is set concentrically outside the inner mold with a rope tensile body wrapped around the outer peripheral surface of the mold. Liquid urethane elastomer is injected into the gap formed by both molds, the elastomer fills the gap, and the teeth and tension parts of the belt are filled and molded. Vulcanization hardening progresses by heating for a predetermined period of time, creating a wide width. A toothed belt molded body is formed.
最後の第6エ程として、かくして得られた歯付きベルト
成形体は内外両金型より取外され、円周方向に所定幅を
もって輪切りされ、第7図に示す歯部全面を補強布にて
正確に被覆されたポリフレタン製歯付ベルト0Qが得ら
れる。In the final sixth step, the thus obtained toothed belt molded body is removed from both the inner and outer molds, cut into rings with a predetermined width in the circumferential direction, and the entire surface of the toothed part shown in Fig. 7 is covered with reinforcing cloth. A precisely coated polyurethane toothed belt 0Q is obtained.
本発明は歯部全面を補強布を正確に被覆せしめてベルト
歯部の強化を意図したもので、この補強布の所定位置で
の正確な定着被覆作業は多々困難を伴うものであったが
、本発明にあっては補強布にポリウレタンエラストマー
を塗布して加熱加圧を併用した型付は作業により、あら
かじめ歯形型付き補強布を作成し、さらにこの補強布の
両端溝部分をウレタン製歯形繋き片にて固定せしめ、一
段の保形強化を図り、この繋ぎ片付き補強布を内金型の
溝付周面に噛合状態をもって強固に巻着せしめる折、こ
の歯形繋ぎ片部分を押圧して内金型表面に安定着せしめ
うるので、爾後のロープ抗張体の巻着は作業、液状フレ
タンエラストマーの注入作業の折にも補強布のずれ、し
わつき、折れ曲りなどベルト歯部の成形に致命的欠陥を
発生せしめる原因を完全に除去せしめることができ、補
強AJはベルトの歯部全面に亘って正確かつ強固に定着
されるので、爾後のベルトにあって歯元クラッタの発生
もなく、かつ噛合状態良好なベルトを艮期に亘って維持
せしめることができる。The present invention is intended to strengthen the belt teeth by accurately covering the entire surface of the teeth with a reinforcing cloth. Accurately fixing and covering the reinforcing cloth at a predetermined position has been accompanied by many difficulties. In the present invention, the reinforcing cloth is coated with polyurethane elastomer and molded using heat and pressure.The reinforcing cloth with tooth-shaped shapes is created in advance, and the grooves at both ends of this reinforcing cloth are connected to the urethane tooth-shaped shapes. When the reinforcing cloth with connecting piece is firmly wrapped around the grooved circumferential surface of the inner mold in an interlocking state, the toothed connecting piece is pressed and the inner mold is tightened. Since it can be stably attached to the mold surface, it can be used to prevent the reinforcing fabric from shifting, wrinkling, or bending during the subsequent wrapping of the rope tensile material or during the injection of liquid urethane elastomer into the belt teeth. The cause of fatal defects can be completely eliminated, and the reinforcing AJ is accurately and firmly fixed over the entire surface of the belt's teeth, so there will be no tooth root clutter in future belts. Moreover, a belt in a good meshing state can be maintained throughout the cutting period.
第1図は型付盤の部分斜視図、第2図は歯J杉i1,1
7(−Jき補強布の一部斜視図、第3図は繋き゛片イ・
1き)W付き補強布の成形過程を示す斜視図、第4図は
歯形ウレタン棒状体の斜視図、第5図は繋き片+tき補
強布の斜視図、第6図は弊ぎ片付き七111強イ1fを
1.1曲に定着せしめた内金型の斜tJj区1、第7図
はこの発明を実施して得られた歯付きベルトの−814
の糸斗視図である。
図中、(1)、(2)はり、■型付盤、(3)は歯形、
(4)は補強布、(4a)は歯形型付き補強布、(4b
)に1繁きH−付き補強布、(5)(5)は歯形繋ぎ片
、(1つはF)号4?、惺1. (13は歯形溝、α均
はロープ抗張体を示す。
第4図
bFigure 1 is a partial perspective view of the molding board, Figure 2 is tooth J cedar i1,1
7 (-J) A partial perspective view of the reinforcing fabric, Figure 3 shows the connecting piece.
1) A perspective view showing the forming process of reinforcing cloth with W, FIG. 4 is a perspective view of a tooth-shaped urethane rod, FIG. Figure 7 shows -814 of the toothed belt obtained by implementing this invention.
FIG. In the figure, (1), (2) beams, ■ molding board, (3) tooth profile,
(4) is reinforcing cloth, (4a) is reinforcing cloth with tooth pattern, (4b
) has one reinforcing cloth with H-, (5) (5) has a tooth-shaped connecting piece, (one is F) No. 4? , 惺1. (13 indicates the tooth groove, and α indicates the rope tension member. Fig. 4b
Claims (1)
を一対の型付盤にて挾持し、これを加熱加圧して歯形型
付き補強布を形成後、この補強布の両端の溝部分を歯形
繋ぎ片にて保形強化し、周面軸方向に歯形溝群を刻設し
、該溝内にポリウレタンニジストマー薄層を付着せしめ
た円筒状内金型の周りに前記歯形繋ぎ片付き補強布を噛
合状態に押圧巻装し、その表面にロープ抗張体をスパイ
ラルに巻着後、同心状に外金型を組合せ、両金型間に液
状ウレタンエラストマーを注入、硬化せしめて製出され
たベルト成形体を輪切りにしてなる歯付きベルトの製造
法。(1) A reinforcing cloth coated with polyurethane nystomer is sandwiched between a pair of molding plates, heated and pressed to form a reinforcing cloth with a toothed shape, and then the grooves at both ends of this reinforcing cloth are made into toothed connecting pieces. The reinforcing cloth with the tooth-shaped connecting piece is meshed around a cylindrical inner mold in which a group of tooth-shaped grooves are carved in the axial direction of the circumferential surface and a thin layer of polyurethane distomer is adhered to the inside of the groove. After pressure winding and spirally wrapping a rope tensile material on its surface, outer molds are assembled concentrically, and liquid urethane elastomer is injected between both molds and cured to produce a belt molded product. A method for manufacturing toothed belts that are cut into rings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13295981A JPS6042022B2 (en) | 1981-08-24 | 1981-08-24 | Manufacturing method of toothed belt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13295981A JPS6042022B2 (en) | 1981-08-24 | 1981-08-24 | Manufacturing method of toothed belt |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5833443A true JPS5833443A (en) | 1983-02-26 |
JPS6042022B2 JPS6042022B2 (en) | 1985-09-19 |
Family
ID=15093494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13295981A Expired JPS6042022B2 (en) | 1981-08-24 | 1981-08-24 | Manufacturing method of toothed belt |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6042022B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2541933A1 (en) * | 1983-03-01 | 1984-09-07 | Mitsuboshi Belting Ltd | Process for manufacturing a cogged-belt sleeve |
JPS63209909A (en) * | 1987-02-27 | 1988-08-31 | Nitta Kk | Manufacture of endless transmission belt |
JPH02269031A (en) * | 1990-03-23 | 1990-11-02 | Bando Chem Ind Ltd | Preparation of transmission belt |
-
1981
- 1981-08-24 JP JP13295981A patent/JPS6042022B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2541933A1 (en) * | 1983-03-01 | 1984-09-07 | Mitsuboshi Belting Ltd | Process for manufacturing a cogged-belt sleeve |
JPS63209909A (en) * | 1987-02-27 | 1988-08-31 | Nitta Kk | Manufacture of endless transmission belt |
JPH0362536B2 (en) * | 1987-02-27 | 1991-09-26 | Nitta Kk | |
JPH02269031A (en) * | 1990-03-23 | 1990-11-02 | Bando Chem Ind Ltd | Preparation of transmission belt |
Also Published As
Publication number | Publication date |
---|---|
JPS6042022B2 (en) | 1985-09-19 |
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