JPS6366650B2 - - Google Patents
Info
- Publication number
- JPS6366650B2 JPS6366650B2 JP15590883A JP15590883A JPS6366650B2 JP S6366650 B2 JPS6366650 B2 JP S6366650B2 JP 15590883 A JP15590883 A JP 15590883A JP 15590883 A JP15590883 A JP 15590883A JP S6366650 B2 JPS6366650 B2 JP S6366650B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- cog
- unvulcanized
- mold
- molded body
- 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
Links
- 238000004073 vulcanization Methods 0.000 claims description 31
- 239000011159 matrix material Substances 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000000750 progressive effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 16
- 239000002184 metal Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000007849 functional defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は長尺ローエツジコグ付きＶベルトの
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a long V-belt with row edge cogs.
従来この種のベルトの製造方法としては、例え
ばドラム方式ではドラムの表面にゴム製コグ付き
母型を巻き付け、その上にＶ芯ゴムシートを含む
ベルトの構成材を順次巻き付けて未加硫ベルト成
形体を成形し、さらにその表面に円筒状ジヤケツ
トを嵌め込み、加硫缶内にて加硫する方法が採用
されていた。しかしその際オープン状のコグ付き
母型を所定の長さに切断して無端状にドラム表面
に巻付ける作業の折ベルト長さがコグピツチで常
に正確に割り切れることはまずまれで、このため
ベルトのジヨイント部にあつてベルトのコグ形状
に、品質的に特に問題はなくともコグピツチズレ
の発生をみることは度々経験するところであつ
た。 Conventional methods for manufacturing this type of belt include, for example, the drum method, in which a rubber cog-equipped matrix is wrapped around the surface of the drum, and the belt components, including a V-core rubber sheet, are sequentially wrapped around it to form an unvulcanized belt. The method used was to mold a body, fit a cylindrical jacket onto its surface, and then vulcanize it in a vulcanizing can. However, in this process, the length of the folded belt, which involves cutting an open cog-equipped matrix to a predetermined length and winding it endlessly around the drum surface, is rarely divisible accurately by the cog pitch. I have often experienced the occurrence of cog pitch deviation in the cog shape of the belt at the joint portion, even though there is no particular problem in terms of quality.
また近時一般産業用Ｖベルトのローエツジ化が
検討され、可撓性良好な長尺なローエツジコグ付
きＶベルトの要求が高まつてきているが、前述し
たドラム方式では加硫缶の大きさにおのずから限
度があり、ためにこれに代るものとして長尺もの
のベルト成形加硫作業には、広く未加硫ベルト成
形体を平板状のコグ付き金型を用いて順送り加硫
するプレス加硫成形方式が採用されている。 In recent years, the use of low-edge V-belts for general industrial use has been considered, and the demand for long V-belts with good flexibility and low-edge cogs has been increasing. As an alternative to this method, there is a press vulcanization method that progressively vulcanizes an unvulcanized belt molded body using a flat cog-equipped mold. has been adopted.
プレス加硫方式における順送り加硫は、プレス
両端部分にあつて気泡の発生やボリユームオーバ
ー、ベルト成形体のゴムの流出などの幣害を取り
去るためにベルト成形体の加硫境界部分は冷却装
置をもつて半加硫の状態とされ、初回のプレス加
硫につづく順送り作業後の第２回目以降は加硫さ
れたコグベルト成形部と未加硫ベルト成形部を同
一プレス内にて一部重複して加硫する必要があ
る。この折母型金型のコグ部はすでに加硫された
ベルトのうち端部に位置するコグ部に嵌合せしめ
て行う。この折一般的にベルト長さは必らずしも
金型のコグピツチで割り切れるとは限らず、無端
状ベルト成形体の初回加硫ゾーンと最終の加硫ゾ
ーンのコグ部の連続成形は、大抵の場合コグの端
数の発生を見る。このコグ端数の出る未加硫無端
ベルト成形体をコグ付き金型で型付け加硫すると
最終加硫時、ベルトのコグ部が金型のコグ部と一
致せずあえて型付け加硫作業を強行することによ
りベルトのコグ部が破壊されるなどの解決されな
ければならない問題点が残されていた。この問題
点を取り除く一手段として端数は発生してもドラ
ム上で母型と一体成形した未加硫エンドレスベル
トを母型と共に取外し、別個のプレス加硫機にて
順送り加硫し、加硫後母型を取外す方法もある。
この場合ベルトコグ部が破壊される事態は解決で
きるが、母型を一つづつ取外すための作業が余分
に加わり、又加硫時の熱と圧力によつて母型が再
使用できず無駄が生じ、これに伴いベルトはコス
ト高となるなど経済面で新らたな問題点の発生を
みた。 In progressive vulcanization in the press vulcanization method, a cooling device is used at the vulcanization boundary of the belt molding to eliminate problems such as the generation of air bubbles, volume overflow, and outflow of rubber from the belt molding at both ends of the press. It is considered to be in a semi-vulcanized state, and from the second time onwards after the sequential feeding operation following the first press vulcanization, the vulcanized cog belt forming part and the unvulcanized belt forming part are partially overlapped in the same press. It is necessary to vulcanize it. The cog portion of this folding master mold is fitted into the cog portion located at the end of the already vulcanized belt. In general, the belt length is not necessarily divisible by the cog pitch of the mold, and the continuous molding of the cog parts of the initial vulcanization zone and the final vulcanization zone of an endless belt molded body is usually In the case of , look at the occurrence of the fraction of the cog. If this unvulcanized endless belt molded product with cog fractions is molded and vulcanized using a mold with cogs, the cog part of the belt will not match the cog part of the mold during final vulcanization, and the molding vulcanization work will be forced. However, there were still problems that needed to be solved, such as the cog part of the belt being destroyed. One way to eliminate this problem is to remove the unvulcanized endless belt, which was molded integrally with the matrix on the drum together with the matrix, even if some fraction occurs, and sequentially vulcanize it in a separate press vulcanizer. There is also a way to remove the matrix.
In this case, the problem of the belt cog being destroyed can be solved, but extra work is required to remove the mother molds one by one, and the heat and pressure during vulcanization make it impossible to reuse the mother molds, resulting in waste. As a result, new economic problems have arisen, such as the increased cost of belts.
この発明は前記各種ベルトの加硫方法が内在せ
しめる欠点を除去改善せしめんとするもので、そ
の基本は順送り方式によるプレス加硫方法を本流
としながら、最終のプレス加硫時、母型のコグピ
ツチの一端にすでに加硫送りされたベルトコグピ
ツチ（最終のプレス加硫の一つ前に加硫されたベ
ルトコグピツチ部）を合わすと他端のベルトコグ
ピツチ（最初にプレス加硫されたベルトコグピツ
チ部）が母型のコグピツチに正確に嵌合しないケ
ースが殆んどであるが、この折このまま強引にプ
レス加硫を行うとベルトのコグ部が破壊されるこ
とを懸念し、最終のプレス加硫用のコグ付き母型
モールドを伸縮性を有する弾性母型モールドを採
用し、これをもつて加硫せしめることにより、ベ
ルトのコグ成形時、未加硫の状態に残された最終
のベルトコグ部成形領域の長さに応じて弾性母型
モールドをして伸縮せしめ、長尺ベルトにあつて
もコグ精度がかなり良好で、且つ加硫作業の簡易
化を達成せしめることができた。 This invention aims to eliminate and improve the drawbacks inherent in the various belt vulcanization methods described above, and its basic principle is to use the progressive press vulcanization method as the main method, but to adjust the cog pitch of the matrix during the final press vulcanization. When the belt cog pitch that has already been vulcanized and sent to one end (the belt cog pitch that was vulcanized before the final press vulcanization) is put together, the belt cog pitch at the other end (the belt cog pitch that was press vulcanized first) will be the same as the mother mold. In most cases, the belt does not fit correctly into the cog pitch, but we are concerned that the cog part of the belt will be destroyed if press vulcanization is performed forcibly as it is, so By using an elastic master mold with elasticity as the mold and vulcanizing it, the length of the final belt cog forming area left unvulcanized during belt cog forming is Accordingly, an elastic matrix mold was used to expand and contract, and even with a long belt, the cog accuracy was quite good, and the vulcanization work was simplified.
以下、最終コグ成形を伴うプレス加硫作業時の
み、伸縮性のある弾性母型モールドを用いること
を特徴とする長尺ローエツジコグ付きＶベルトの
製造方法の具体的二三の実施例を図面を用い乍ら
説明する。 Hereinafter, with reference to drawings, we will explain two or three specific examples of a method for manufacturing a V-belt with a long row edge cog, which is characterized in that a stretchable elastic matrix mold is used only during the press vulcanization work that accompanies final cog forming. I will explain.
まず第１の工程は、表面にゴム製スリーブ１２
を被覆せしめた円筒状ドラム１１の外周面には、
短繊維群２が配向された一定厚みの未加硫Ｖ芯ゴ
ムシート１を前記短繊維２が円筒状ドラム１１の
円周方向に対し直角となるように無端状に巻付
け、ついで下部クツシヨンゴムシート３ａ、その
上に抗張体ロープ４を一定張力下にてスパイラル
状に巻付けた後、上部クツシヨンゴムシート３ｂ
を巻付け、更に短繊維２群を同じく円周方向に対
し直角となるよう配向せしめた上芯ゴムシート５
を巻付け、その外周面を少なくとも１枚のゴム付
き伸縮性帆布６をもつて被覆し、その部分斜視図
を第２図に示す無端状のスリーブ形の未加硫ベル
ト成形体１０を形成する。 The first step is to attach a rubber sleeve 12 to the surface.
The outer peripheral surface of the cylindrical drum 11 coated with
An unvulcanized V-core rubber sheet 1 of a constant thickness in which short fiber groups 2 are oriented is wrapped endlessly so that the short fibers 2 are perpendicular to the circumferential direction of the cylindrical drum 11, and then the lower cushion is wrapped. After wrapping the tensile rope 4 in a spiral shape under a constant tension on the rubber sheet 3a, the upper cushion rubber sheet 3b is formed.
an upper core rubber sheet 5 in which two groups of short fibers are also oriented perpendicularly to the circumferential direction.
The outer circumferential surface of the unvulcanized belt is covered with at least one sheet of rubberized elastic canvas 6 to form an endless sleeve-shaped unvulcanized belt molded body 10 whose partial perspective view is shown in FIG. .
つぎに第２工程にあつては、第３図、第４図に
示すように円筒状ドラム１１より取り外した未加
硫ベルト成形体１０を軸間距離調整可能な２個の
平プーリ２１，２１間に懸架し、ベルト成形体１
０の表面側に上盤２２を、ベルト成形体１０の底
面側に中盤２３を、さらにベルト成形体の下向き
表面側に下盤２４をそれぞれ配し、各盤のベルト
挾持面に金型モールド２５，２６，２６，２７を
装備せしめ、ベルトの表面側に接するモールド２
５および２７面は平滑面２８を呈し、一方ベルト
の底面側に接するモールド２６，２６は所定間隔
にて金型モールドの幅方向にのびる突条２９と凹
溝３０を交互に設けたコグ面を有し、さらに前記
金型モールド２５，２６，２６，２７の左右両側
部には、加硫時ゴムの流出を防止するためのエツ
ジ３１が隆設されている。また各金型の前後の両
端部における幅方向（前記エツジ３１と直交する
方向）には冷却装置３２、より詳しくは冷却流体
供給パイプが備えられ、加硫時、ベルト成形体の
加硫済部分と未加硫部分との境界部分における極
端なボリユームオーバー、スポンジの発生、ベル
ト成形体を構成するゴムの流出の発生等を本装置
３２をもつて抑制せしめている。 Next, in the second step, as shown in FIG. 3 and FIG. The belt molded body 1 is suspended between
An upper plate 22 is disposed on the front side of the belt molded body 10, a middle plate 23 is arranged on the bottom side of the belt molded body 10, and a lower plate 24 is arranged on the downward facing surface side of the belt molded body, and a metal mold 25 is placed on the belt clamping surface of each plate. , 26, 26, 27 and is in contact with the surface side of the belt.
The surfaces 5 and 27 have smooth surfaces 28, while the molds 26 and 26 in contact with the bottom side of the belt have cog surfaces alternately provided with protrusions 29 and grooves 30 extending in the width direction of the mold at predetermined intervals. Furthermore, edges 31 are provided on both left and right sides of the metal molds 25, 26, 26, and 27 to prevent rubber from flowing out during vulcanization. In addition, a cooling device 32, more specifically a cooling fluid supply pipe, is provided in the width direction (direction perpendicular to the edge 31) at both front and rear ends of each mold, and during vulcanization, the vulcanized portion of the belt molded body is This device 32 suppresses extreme volume overflow, generation of sponging, and outflow of the rubber constituting the belt molded body at the boundary between the belt molded body and the unvulcanized portion.
１対の平プーリ２１，２１間に懸架されたベル
ト成形体１０は往路側および復帰側の２個所にて
中盤２３に装備せしめたコグ面を設けた金型モー
ルド２６，２６面に、上下両盤２２，２４に装備
せしめた平滑面２８を有する金型モールド２５お
よび２７が、ベルト成形体１０を挾持せしめて圧
接し、所定の温度及び圧力をもつて、ベルト成形
体１０にはコグの成形と共に加硫が進行し、この
折各金型モールドに装備せしめた冷却装置３２を
もつてベルト成形体の加硫済部分と未加硫部分の
境界部にあつて気泡の発生、盛り上り（ボリユー
ムオーバー）現象を抑止する。加硫済ベルト成形
体は金型モールドの加硫領域より順送りされて移
動し、加硫済部分の後方部の冷却装置３２の作用
により半加硫状態のベルトコグ部を再度金型モー
ルドの前方コグ部に嵌合せしめて該半加硫部のみ
は再度の加熱、加圧により次位部分と共に加硫が
行われ、この作業が順次繰り返えされながらベル
ト成形体の最後の加硫ゾーンを未加硫の状態に残
して第２工程は終了する。（よつて無端状のベル
ト成形体には上下２個所にて加硫工程が同時に進
行しているため、結果的には２個所の未加硫ゾー
ンが残されることとなる。）
つぎに、第５図に示す、第３の工程にあつては
前記第２工程において未加硫ベルト成形体にあつ
て未加硫のままに残された最終加硫領域の加硫に
向けられる。即ちベルト成形体１０の表面側に配
された上盤４１および底面側に配された下盤４２
のそれぞれベルト挾持面側には平滑面４３を有す
る金型モールド４４および所定間隔にモールド幅
方向にのびる突条４５と凹溝４６を交互に配した
コグ面を有する伸縮性を保有せしめた弾性母型モ
ールド４７を装備せしめ、かつ両側面部にゴム流
出防止用エツジ（図示せず）を隆設せしめた二段
プレス加硫機をもつて２個所の残存未加硫ベルト
成形体部分は所定の温度、圧力にて加硫される。 The belt molded body 10 suspended between a pair of flat pulleys 21, 21 is placed on both upper and lower sides of a metal mold 26, 26, which is provided with a cog surface and is equipped on the middle plate 23 at two places, on the forward side and the return side. The metal molds 25 and 27 having smooth surfaces 28 provided on the disks 22 and 24 sandwich and press the belt molded body 10, and at a predetermined temperature and pressure, the belt molded body 10 is molded into a cog. At the same time, vulcanization progresses, and at this time, the cooling device 32 installed in each metal mold is used to prevent the generation of air bubbles and increase the volume at the boundary between the vulcanized and unvulcanized parts of the belt molded body. over) phenomenon. The vulcanized belt molded body is progressively fed from the vulcanization area of the metal mold, and the semi-vulcanized belt cog part is moved again to the front cog of the metal mold by the action of the cooling device 32 at the rear part of the vulcanized part. The semi-vulcanized part is heated and pressurized again to be cured together with the next part, and this process is repeated one after another until the last vulcanized zone of the belt molded body is left unvulcanized. The second step ends with the sulfur remaining in the sulfur state. (Thus, since the vulcanization process is proceeding at the same time in the upper and lower parts of the endless belt molded body, two unvulcanized zones are left as a result.) In the third step shown in FIG. 5, the final vulcanized region of the unvulcanized belt molded body left unvulcanized in the second step is vulcanized. That is, an upper plate 41 arranged on the front side of the belt molded body 10 and a lower plate 42 arranged on the bottom side.
Each of the belt clamping surfaces has a metal mold 44 having a smooth surface 43 and an elastic matrix having elasticity and having a cog surface in which protrusions 45 and grooves 46 extending in the width direction of the mold are alternately arranged at predetermined intervals. Using a two-stage press vulcanizer equipped with a mold 47 and having raised edges (not shown) on both sides to prevent rubber from flowing out, the two remaining unvulcanized belt molded parts are brought to a predetermined temperature. , vulcanized under pressure.
前記第２工程にて加硫された最終加硫済ベルト
の後尾コグ部７ａを弾性母型モールド４７の前方
コグ部に嵌合し、又最初の加硫済ベルトの先頭コ
グ部を弾性母型モールド４７の後方コグ部７ｂに
それぞれ嵌合し（該ベルトのコグ部分は冷却装置
３２をもつて半加硫の状態にある）、上盤４１を
下盤４２側に降下加圧せしめベルト成形体１０の
うち残された長さ(l)をもつて表わされた未加硫領
域が最終的に加硫される。 The trailing cog portion 7a of the final vulcanized belt vulcanized in the second step is fitted into the front cog portion of the elastic matrix mold 47, and the leading cog portion of the first vulcanized belt is fitted into the elastic matrix mold 47. They are fitted into the rear cog portions 7b of the mold 47 (the cog portions of the belt are in a semi-vulcanized state with the cooling device 32), and the upper plate 41 is lowered and pressed toward the lower plate 42 to form a belt molded body. The unvulcanized area, represented by the remaining length (l) out of 10, is finally vulcanized.
かくして半加硫のコグ部分は再度の加熱加圧に
より完全なる加硫が実現される。この発明にあつ
ても、特に第３工程において（第５図参照）ほと
んどのベルトサイズにおいて残存未加硫領域の長
さ(l)は母型モールドのコグピツチで割りきれず端
数が発生するが、この母型モールドは伸縮性を保
有せしめた弾性体をもつて構成せしめているため
残存未加硫ベルト成形部が嵌合する部分の母型モ
ールドは自在に伸縮し、極めて容易に端数を吸収
する。 In this way, the semi-vulcanized cog portion is completely vulcanized by heating and pressurizing again. Even in this invention, especially in the third step (see Figure 5), for most belt sizes, the length (l) of the remaining unvulcanized area cannot be divided by the cog pitch of the master mold, and a fraction occurs. Since this master mold is made of an elastic body that has elasticity, the part of the master mold where the remaining unvulcanized belt molding part fits freely expands and contracts, and absorbs fractions extremely easily. .
即ち残存未加硫部の長さ(l)が短かい場合は母型
モールドを収縮させ、反対に長い場合は母型モー
ルドを伸張させて未加硫ゾーンの長短に対応し該
部をコグ成形と同時に加硫せしめる。 In other words, if the length (l) of the remaining unvulcanized part is short, the master mold is shrunk, and if it is long, the master mold is expanded to correspond to the length of the unvulcanized zone, and the part is cog-molded. Vulcanize at the same time.
なお上述した弾性母型モールドは硬度70〜80゜
（JIS規格）、100％モジユラス100Kg／cm2以下、切
断時の伸び200％以上の物性を満足せしめるもの
であればよく、必らずしもゴム製のものに限定さ
れるものではない。 The above-mentioned elastic matrix mold may be one that satisfies physical properties such as hardness of 70 to 80° (JIS standard), 100% modulus of 100 kg/cm 2 or less, and elongation at cutting of 200% or more. It is not limited to those made of rubber.
かくして全長成形加硫されたベルト成形体は最
終工程にて一定幅でＶ型にカツトされ第６図に示
すコグ７部を連設せしめた長尺ローエツジコグ付
きＶベルト１０′を得る。 In the final step, the full-length molded and vulcanized belt molded body is cut into a V-shape with a constant width to obtain a long row-edge cog-equipped V-belt 10' in which seven cogs are connected in series as shown in FIG.
以上詳述したベルトの製造方法は幅広の無端状
ベルト成形体のコグ成形を伴うプレス加硫後、幅
広のスリーブ状のベルト成形体を輪切りして複数
本のコグ付きＶベルトを製造する実施例を開示し
たものであるが、無端状の幅広のベルト成形体を
加硫に先立つて所定幅にＶカツトとして１本毎の
独立した無端状のベルト成形体をして複数本同時
にコグ成形を伴うプレス加硫することによつても
又コグ付きＶベルトを得ることができ、その製造
方法の具体的実施例を以下図面を用いて説明す
る。 The belt manufacturing method detailed above is an embodiment in which a wide endless belt molded body is press-cured with cog forming, and then the wide sleeve-shaped belt molded body is cut into rounds to manufacture a plurality of V-belts with cogs. However, prior to vulcanization, a wide endless belt molded body is V-cutted to a predetermined width, and each endless belt molded body is made into an independent endless belt molded body, and multiple belts are cog-formed at the same time. A V-belt with cogs can also be obtained by press vulcanization, and a specific example of the manufacturing method will be described below with reference to the drawings.
尚、この実施例にあつては既述せる先の実施例
にて開示せる工程の略全工程を用いているため重
複する作業工程にあつてはその詳細はこれを割愛
して説明を続けることとする。 In addition, since this example uses almost all the steps disclosed in the previous examples, the details of the overlapping work steps will be omitted and the explanation will be continued. shall be.
まず第１の工程において先の第１図を中心とし
た円筒状ドラム１１の外周面にＶ芯ゴムシート１
を含む各種ベルト構成材を積層状に巻き付けてな
る幅広のスリーブ形未加硫ベルト成形体１０の成
形工程は同一である。この時点にて第２工程とし
てスリーブ形の未加硫ベルト成形体１０を所定幅
に輪切り状にカツトとして後、スカイビングマシ
ンにてその両側面をほぼ逆台形状にスカイブして
独立した複数本の無端状未加硫Ｖベルト成形体１
０Ａを形成する。次の第３工程にあつては先に第
３図を中心として説明したと基本的には略同様で
あるが、第７図、第８図に示すごとく軸間距離を
調整可能とした２個のＶ溝付きプーリ２１Ａ，２
１Ａ間に複数本の未加硫Ｖベルト成形体１０Ａ，
１０Ａを同時に懸架し、Ｖベルト成形体１０Ａの
表及び底面部に対面してそれぞれ上盤２２Ａ、中
盤２３Ａおよび下盤２４Ａを配し、各盤のＶベル
ト成形体１０Ａ側に金型モールド２５Ａ，２６
Ａ，２６Ａ，２７Ａを装備せしめる構成も同様で
あるが、この折の金型モールド２５Ａ，２７Ａは
モールド幅方向に等間隔に、平滑面を有する複数
のアーチ面２８Ａを有し、各アーチ面２８Ａと相
対応して金型モールド２６Ａ，２６Ａには逆台形
溝３３が形成され、且つこの逆台形溝３３の底部
は所定の間隔に突条２９Ａ凹溝３０Ａを交互に設
けたコグ面を呈し、また各金型の前後両端部には
金型の幅方向にのびる冷却装置３２Ａ、より詳し
くは冷却流体供給パイプが備えられている。 First, in the first step, a V-core rubber sheet 1 is placed on the outer peripheral surface of the cylindrical drum 11 centered at the point shown in FIG.
The molding process of the wide sleeve-shaped unvulcanized belt molded body 10, which is formed by winding various belt constituent materials including the following in a laminated manner, is the same. At this point, as a second step, the sleeve-shaped unvulcanized belt molded body 10 is cut into rings of a predetermined width, and then both sides are skived into a substantially inverted trapezoid shape using a skiving machine to create a plurality of independent pieces. Endless unvulcanized V-belt molded body 1
Forms 0A. The next third step is basically the same as the one explained above with reference to FIG. 3, but as shown in FIGS. 7 and 8, there are two V-groove pulley 21A, 2
A plurality of unvulcanized V-belt molded bodies 10A between 1A,
10A are suspended at the same time, and an upper plate 22A, a middle plate 23A, and a lower plate 24A are arranged facing the front and bottom parts of the V-belt molded body 10A, respectively, and a mold 25A, 26
The configuration for equipping A, 26A, 27A is the same, but the metal molds 25A, 27A at this time have a plurality of arch surfaces 28A having smooth surfaces at equal intervals in the mold width direction, and each arch surface 28A Correspondingly, an inverted trapezoidal groove 33 is formed in the molds 26A, 26A, and the bottom of the inverted trapezoidal groove 33 has a cog surface in which protrusions 29A and grooves 30A are alternately provided at predetermined intervals. Further, a cooling device 32A, more specifically a cooling fluid supply pipe, is provided at both front and rear ends of each mold, extending in the width direction of the mold.
無端状の未加硫Ｖベルト成形体１０Ａは金型モ
ールドに嵌合・挾持され、所定の温度及び圧力を
加えられて順次コグ成形を伴う加硫が施され、金
型モールドの加硫領域より順送りされて移動し、
ベルト成形体１０Ａの最後の加硫ゾーンを長さ(l)
だけ未加硫の状態に残して次の工程に移る。 The endless unvulcanized V-belt molded body 10A is fitted and clamped in a metal mold, and is sequentially vulcanized with cog forming by applying a predetermined temperature and pressure. It moves sequentially,
The length (l) of the last vulcanized zone of belt molded body 10A
Leave only the unvulcanized state and move on to the next step.
つぎの第４の工程は第９図に示す未加硫のまま
残されたベルト成形体のコグ成形を伴う加硫作業
に向けられるが、この作業のための成形加硫モー
ルドはアーチ面４３Ａを有する金型モールド４４
Ａおよび逆台形溝５３を設け、この逆台形溝５３
の底部に突条４５Ａおよび凹溝４６Ａを交互に形
成したコグ面を形成せしめた伸縮性を保有せしめ
た弾性母型モールド４７Ａを装備せしめた二段プ
レス加硫機をもつて残存未加硫ベルト成形部分は
すでに第５図をもつて説明したと同様なコグ成形
を伴う加硫作業が行われ、第１０図に示すコグ７
部を連設せしめた長尺ローエツジコグ付きＶベル
ト１０A′を得る。 The next fourth step is a vulcanization operation involving cog formation of the belt molded body left unvulcanized as shown in FIG. A metal mold 44 having
A and an inverted trapezoidal groove 53 are provided, and this inverted trapezoidal groove 53
The remaining unvulcanized belt is produced using a two-stage press vulcanizer equipped with an elastic matrix mold 47A that has elasticity and has a cog surface with alternating protrusions 45A and grooves 46A formed on the bottom of the belt. The molded part was vulcanized with cog molding similar to that already explained with reference to FIG. 5, and the cog 7 shown in FIG.
To obtain a long V-belt 10A' with a continuous row edge cog.
以上詳述のとおり、この発明はその長さ(l)の最
終未加硫ゾーンを残してそれ以前はコグ面付き金
型モールドを用いて何らベルトのコグ部の存在に
ついて考慮することなくプレス加硫作業をつづ
け、最終的に残された未加硫ゾーン部をコグ形成
を伴うプレス加硫工程にあつて、特に伸縮性に富
みその長さを未加硫ベルト成形体領域の長さ(l)に
対応せしめうる弾性コグ付き母型モールドを用い
たプレス加硫工程を配置せしめることにより、残
存未加硫ゾーンと金型コグピツチの間に生ずるず
れを容易に吸収することができ、ベルトのコグ部
の形状を大きく損うこともなく、又弾性を有する
コグ付き母型モールドのスクラツプの低減および
特別繁雑な作業を必要とせず整然としたコグ群を
隆設せしめた長尺Ｖベルトを得ることができた。 As described in detail above, the present invention leaves a final unvulcanized zone of length (l) and presses the belt using a die mold with a cog surface without considering the presence of the cog portion of the belt. The curing process is continued, and the unvulcanized zone that remains is subjected to a press curing process that involves cog formation. ) By arranging the press vulcanization process using a master mold with elastic cogs that can correspond to It is possible to obtain a long V-belt with raised cog groups in an orderly manner without significantly damaging the shape of the parts, reducing the amount of scrap of an elastic mother mold with cogs, and without requiring particularly complicated work. did it.
なおこの発明の加硫方法によつて得られた最終
加硫工程によつて得られたベルトのコグ部の他部
に比較してのごくわずかなずれはこのコグ機能が
専らＶベルトのベンデイング性を希求している点
より機能上の欠陥とはならず、小径プーリへの掛
巻にあつても早期腹部クラツクの発生なしで走行
できた。 It should be noted that the very slight deviation of the cog part of the belt obtained by the final vulcanization process according to the vulcanization method of the present invention compared to other parts is due to this cog function exclusively due to the bending property of the V-belt. Since this was desired, there was no functional defect, and even when it was wrapped around a small diameter pulley, it was able to run without causing early abdominal cracks.
第１図は未加硫ベルト成形体の成形態様を示す
横断面図、第２図は無端状未加硫ベルト成形体の
部分斜視図、第３図はコグ成形作業を伴うプレス
加硫工程を示す側面図（但しモールド部のみを切
欠いて示す）、第４図は第３図のＡ−Ａ線におけ
る拡大切断面図（但し未加硫ベルト成形体は図示
せず）、第５図は弾性母型モールドを備えたプレ
ス加硫機を用いての加硫工程を示す側面図（但し
モールド部のみを切欠いて示す）、第６図は長尺
ローエツジコグ付きＶベルトの一部斜視図、第７
図は他の実施例を示す第３図に相当する図、第８
図は第７図のＢ−Ｂ線における拡大切断面図（但
し未加硫Ｖベルト成形体群は図示せず）、第９図
は他の実施例を示す第５図に相当する図、第１０
図は他の実施例によつて得られた第６図に相当す
る図である。
図中、１は未加硫Ｖ芯ゴムシート、４は抗張体
ロープ、５は上芯ゴムシート、７はベルトのコグ
部、１０，１０Ａは無端未加硫ベルト成形体、１
０′，１０A′は長尺ローエツジコグ付きＶベル
ト、２１，２１Ａはプーリ、２５，２５Ａ、２
６，２６Ａ，２７，２７Ａ、４４，４４Ａは金型
モールド、２９，４５，２９Ａ，４５Ａは突条、
３０，４６，３０Ａ，４６Ａは凹溝、４７，４７
Ａは弾性母型モールドを示す。
Figure 1 is a cross-sectional view showing the form of an unvulcanized belt molded body, Figure 2 is a partial perspective view of an endless unvulcanized belt molded body, and Figure 3 is a press vulcanization process involving cog forming work. 4 is an enlarged cross-sectional view taken along line A-A in FIG. 3 (however, the unvulcanized belt molded body is not shown), and FIG. 5 is an elastic A side view showing the vulcanization process using a press vulcanizer equipped with a matrix mold (however, only the mold part is shown cut away), FIG. 6 is a partial perspective view of a V-belt with a long row edge cog, and FIG.
The figures are a diagram corresponding to FIG. 3 showing another embodiment, and a diagram corresponding to FIG. 8.
The figure is an enlarged cross-sectional view taken along the line B-B of FIG. 7 (however, the group of unvulcanized V-belt molded bodies is not shown), FIG. 9 is a view corresponding to FIG. 5 showing another example, and FIG. 10
The figure is a diagram corresponding to FIG. 6 obtained by another example. In the figure, 1 is an unvulcanized V-core rubber sheet, 4 is a tensile rope, 5 is an upper core rubber sheet, 7 is a cog part of the belt, 10, 10A is an endless unvulcanized belt molded body, 1
0', 10A' are V-belts with long row edge cogs, 21, 21A are pulleys, 25, 25A, 2
6, 26A, 27, 27A, 44, 44A are metal molds, 29, 45, 29A, 45A are protrusions,
30, 46, 30A, 46A are grooves, 47, 47
A shows an elastic matrix mold.
Claims (1)
に巻付けて無端状の未加硫ベルト成形体を形成す
る第１工程、つぎに前記未加硫ベルト成形体の表
面側に平滑面を持つモールドを、又底面側に一定
のピツチにてコグを形成したモールドをそれぞれ
配し、前記無端状の未加硫ベルト成形体を、前記
一対のモールド間にて順送りしてコグ成形を伴う
プレス加硫する工程にあつて、順送り中のベルト
成形体の最終のプレス加硫する領域を未加硫のま
ま残す第２工程、つぎに前記未加硫のまま残され
た領域部を、ベルト表面側に配した平滑面を持つ
モールドと、ベルト底面側に配した、前記未加硫
のまま残された領域の長さ(l)に応じて、該部にコ
グ成形時発生する端数を吸収するように、その長
さを調整したコグを有する伸縮性をもつた弾性母
型を装着したモールドとの間に挟持してコグ成形
を伴うプレス加硫する第３工程、前記第１工程又
は第３工程後にＶ形ベルトのカツト工程が加えら
れることを特徴とする長尺コグ付きＶベルトの製
造方法。1. A first step of forming an endless unvulcanized belt molded body by winding belt constituent materials including a V-core rubber sheet in a laminated manner, and then forming a smooth surface on the surface side of the unvulcanized belt molded body. A mold with cogs formed at a constant pitch on the bottom side is arranged respectively, and the endless unvulcanized belt molded body is sequentially fed between the pair of molds and press-processed with cog forming. In the curing step, the second step is to leave the final press-cured area of the belt molded body unvulcanized during the progressive feeding, and then the area left unvulcanized is removed from the belt surface side. A mold with a smooth surface is placed on the bottom side of the belt, and a mold is placed on the bottom side of the belt to absorb the fractions generated during cog molding, depending on the length (l) of the area left unvulcanized. and a third step of press vulcanization accompanied by cog forming by sandwiching it between a mold equipped with a stretchable elastic matrix having a cog whose length is adjusted, the first step or the third step. A method for producing a long cog-equipped V-belt, characterized in that a V-shaped belt cutting step is subsequently added.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15590883A JPS6046220A (en) | 1983-08-25 | 1983-08-25 | Manufacture of long v-belt with cog |
| IN105/MAS/84A IN159226B (en) | 1983-08-25 | 1984-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15590883A JPS6046220A (en) | 1983-08-25 | 1983-08-25 | Manufacture of long v-belt with cog |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6046220A JPS6046220A (en) | 1985-03-13 |
| JPS6366650B2 true JPS6366650B2 (en) | 1988-12-21 |
Family
ID=15616139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15590883A Granted JPS6046220A (en) | 1983-08-25 | 1983-08-25 | Manufacture of long v-belt with cog |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6046220A (en) |
| IN (1) | IN159226B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63185838U (en) * | 1987-05-20 | 1988-11-29 | ||
| ES2023738A6 (en) * | 1990-02-02 | 1992-02-01 | Landolt Fritz Ag | Support structure for steep slope |
-
1983
- 1983-08-25 JP JP15590883A patent/JPS6046220A/en active Granted
-
1984
- 1984-02-18 IN IN105/MAS/84A patent/IN159226B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6046220A (en) | 1985-03-13 |
| IN159226B (en) | 1987-04-11 |
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