JPS63225765A - Manufacture of oil seal - Google Patents
Manufacture of oil sealInfo
- Publication number
- JPS63225765A JPS63225765A JP62057811A JP5781187A JPS63225765A JP S63225765 A JPS63225765 A JP S63225765A JP 62057811 A JP62057811 A JP 62057811A JP 5781187 A JP5781187 A JP 5781187A JP S63225765 A JPS63225765 A JP S63225765A
- Authority
- JP
- Japan
- Prior art keywords
- resin material
- mold
- annular resin
- annular
- oil seal
- 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 18
- 239000000463 material Substances 0.000 claims abstract description 56
- 239000011347 resin Substances 0.000 claims abstract description 55
- 229920005989 resin Polymers 0.000 claims abstract description 55
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 239000013013 elastic material Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 101100268134 Caenorhabditis elegans zig-7 gene Proteins 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はオイルシールの製造方法、特に、リップしゅう
動面に樹脂、例えば４フツ化エチレン樹脂（テフロン）
を接着するオイルシール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 an oil seal, and in particular, to a lip sliding surface using a resin such as tetrafluoroethylene resin (Teflon).
The present invention relates to a method of manufacturing an oil seal for bonding.
従来のオイルシールの製造方法を第４図を参照して説明
する。第４図を参照すると、成形型の成形キャビティ２
にゴム状弾性体素材を配置し、前の製造工程で加熱され
ている成形型１の成形キャビティ２に隣接した台座２０
上に環状の樹脂素材３を配置する。樹脂素材３を台座２
ｏ上に配置後、成形型ｌの上型４と下型５とを閉鎖する
ことによってゴム弾性体素材を加硫・成形してオイルシ
ールの耐熱性、耐圧性、耐摩耗性を向上させるため樹脂
素材３４リツプしゅう動面６に接着するようになってい
る。A conventional oil seal manufacturing method will be explained with reference to FIG. Referring to FIG. 4, the mold cavity 2 of the mold
A pedestal 20 adjacent to the molding cavity 2 of the mold 1, on which a rubber-like elastic material is placed and heated in the previous manufacturing process.
An annular resin material 3 is placed on top. Place resin material 3 on pedestal 2
After placing it on the oil seal, the upper mold 4 and lower mold 5 of the mold l are closed to vulcanize and mold the rubber elastic material to improve the heat resistance, pressure resistance, and abrasion resistance of the oil seal. The resin material 34 is adapted to be adhered to the lip sliding surface 6.
ところで、成形型ｌの台座２ｏ上に環状の樹脂素材３を
載置する際、成形型が前の工程のオイルシールを製造す
るために加熱されており、その熱によって樹脂素材３が
熱膨張して外周縁が半径方向に伸びるため成形後、リッ
プしゆう動面に接着された樹脂素材３の所定位置からの
ずれ１７を生じる。又、樹脂素材３が台座２０に確実に
位置決めされていないために成形の際樹脂素材３が所定
位置からずれることもある。これによって接着部材のず
れ１７（第５図参照）を生じ、その結果、リップ部の耐
熱性、耐圧性等の物理特性を低下させるという問題があ
った。特に、熱膨張による伸びの場合オイルシールの直
径が大きくなればなるほどそのずれが大きくなるという
傾向がある。By the way, when the annular resin material 3 is placed on the pedestal 2o of the mold l, the mold is heated to manufacture the oil seal in the previous step, and the resin material 3 thermally expands due to the heat. Since the outer peripheral edge extends in the radial direction, the resin material 3 adhered to the lip sliding surface may be displaced 17 from a predetermined position after molding. Furthermore, since the resin material 3 is not reliably positioned on the pedestal 20, the resin material 3 may shift from a predetermined position during molding. This causes a shift 17 (see FIG. 5) of the adhesive member, resulting in a problem of deterioration of physical properties such as heat resistance and pressure resistance of the lip portion. In particular, in the case of elongation due to thermal expansion, there is a tendency that the larger the diameter of the oil seal, the greater the deviation.
本発明は、上記問題に鑑みなされたもので、その目的と
する処は、樹脂素材を確実に位置、決めすると同時に樹
脂素材が熱膨張で変形して伸び所定位置からずれること
によってリップ部のシール機能が低下することを防止し
、オイルシールの不良品を排除し得るオイルシールの製
造方法を提供するにある。The present invention has been made in view of the above problems, and its purpose is to securely position and determine the resin material, and at the same time seal the lip portion by deforming and elongating the resin material due to thermal expansion and causing it to deviate from a predetermined position. To provide a method for manufacturing an oil seal that can prevent deterioration of function and eliminate defective oil seals.
〔問題点を解決するための手段〕
前記目的は、本発明によれば環状樹脂素材の内周縁をお
さえ治具で固定して成形型内の所定位置に位置決めする
工程と、位置決めされた環状樹脂素材の伸びをおさえ治
具によって抑えつつゴム状弾性体素材を、加硫成形して
ゴム状弾性体素材に環状樹脂素材を一体に接着する工程
と、上記環状樹脂素材とゴム状弾性体素材の余剰部分を
切断する工程とからなるオイルシールの製造方法によっ
て達成される。[Means for Solving the Problems] According to the present invention, the above objects include a step of fixing the inner peripheral edge of the annular resin material with a pressing jig and positioning it at a predetermined position in a mold, and A step of vulcanizing and molding the rubber-like elastic material while suppressing the elongation of the material using a jig and bonding the annular resin material to the rubber-like elastic material; and a step of bonding the annular resin material and the rubber-like elastic material together. This is achieved by an oil seal manufacturing method that includes the step of cutting off the excess portion.
リップしゅう動面を備えるゴム状弾性体素材を成形型の
成形キャビティ内に配置する０次に円環状のおさえ治具
でリップしゅう動面に接着するための環状樹脂素材の内
周縁を固定して、成形型内の所定位置に位置決めする。A rubber-like elastic material with a lip sliding surface is placed in the molding cavity of the mold.The inner circumferential edge of the annular resin material for adhesion to the lip sliding surface is fixed using a zero-order annular holding jig. , and position it in a predetermined position within the mold.
次に環状樹脂素材の伸びをおさえ治具によって抑えなが
らゴム状弾性体素材を加硫成形してゴム状弾性体素材に
環状樹脂素材を一体に接着する。おさえ治具によって、
樹脂素材が正確に位置決めされ、半径方向の内局縁を固
定するため、加硫成形時に樹脂素材が熱膨張して変形し
て半径方向外側へ伸びることが防止される。その後、環
状樹脂素材とゴム状弾性体素材の余剰部分を切断する。Next, the rubber-like elastic material is vulcanized and molded while the elongation of the annular resin material is suppressed using a jig, and the annular resin material is integrally bonded to the rubber-like elastic material. With the holding jig,
Since the resin material is accurately positioned and the radially inner inner edge is fixed, the resin material is prevented from thermally expanding, deforming, and extending radially outward during vulcanization molding. After that, the excess portions of the annular resin material and the rubber-like elastic material are cut off.
以下に本発明を図示の実施例に基づいて説明する。まず
第１図を参照すると、本発明によるおさえ治具７は円環
状であり上方部分８と下方部分とからなる。上方部分８
の先端部は、傾斜面ｌＯを有し、ゴム状弾性体素材の成
形時にゴム状弾性体素材のリップし喰う動面６に当接す
るようになっている。樹脂素材３例えば４フツ化エチレ
ン樹脂３は、上方部分８と下方部分９との間に配置され
る。上方部分８の先端部の下面１１と下方部分９の先端
部の上面１２には凸部１３と凹部１４が夫々設けられて
いる。又、上方部分８と下方部分９を樹脂素材３を間に
挟んで固定するボルト等の固定用部品を通すための孔１
５．１６が設けられている。この孔１５．１６は、円環
状のおさえ治具７の円周上に複数個設けられている。上
方部分８と下方部分９との凹凸部分は下面１１と上面１
２が平坦である場合に比して樹脂素材３に対して半径方
向内側に向かう引張りを与えるように形成されている。The present invention will be explained below based on illustrated embodiments. First, referring to FIG. 1, the holding jig 7 according to the present invention has an annular shape and consists of an upper portion 8 and a lower portion. Upper part 8
The tip has an inclined surface lO, and is adapted to come into contact with a moving surface 6 that lips and bites the rubber-like elastic material during molding of the rubber-like elastic material. A resin material 3, for example, a tetrafluoroethylene resin 3, is arranged between the upper part 8 and the lower part 9. A convex portion 13 and a concave portion 14 are provided on the lower surface 11 of the distal end of the upper portion 8 and the upper surface 12 of the distal end of the lower portion 9, respectively. Also, holes 1 are provided for passing fixing parts such as bolts to fix the upper part 8 and the lower part 9 with the resin material 3 in between.
5.16 is provided. A plurality of holes 15 and 16 are provided on the circumference of the annular holding jig 7. The uneven parts of the upper part 8 and the lower part 9 are the lower surface 11 and the upper surface 1.
The resin material 3 is formed so as to apply a radially inward tension to the resin material 3 compared to the case where the resin material 2 is flat.
このように構成されたオイルシール製造装置によれば、
まず環状の樹脂素材３を上方部分８と下方部分９との間
に配置し、ボルト１８で固定する。その結果、環状の樹
脂の内周縁が上方部分と下方部分で挟持され固定される
。その後、成形型の上型４と下型５との間の所定の位置
に挿入され位置決めされる０次に、成形型１を作動させ
て、環状樹脂素材の伸びをおさえ治具７によって抑えつ
つ予め成形型１内に配置されたゴム弾性素材２１を加硫
・成形して、樹脂素材３をゴム状弾性体素材２１のリッ
プしゅう動面６に接着する。最後に、上記環状樹脂素材
３とゴム状弾性体素材２１の余剰部分を斜線部２２で切
断する。又、おさえ治具７を複数個作っておき、常に常
温時に樹脂素材３を固定するのが好ましい、すなわち、
一度使用した治具は、次のオイルシールの製造工程では
使用せずに、別の治具を使用すれば樹脂素材の固定は常
に常温で行なわれ得、樹脂素材３の設定時の熱膨張を防
止し得る。第２図にはおさえ治具７を用いた成形前のオ
イルシールを、第３図には成形後のオイルシールを示す
。According to the oil seal manufacturing apparatus configured in this way,
First, the annular resin material 3 is placed between the upper part 8 and the lower part 9 and fixed with bolts 18. As a result, the inner peripheral edge of the annular resin is sandwiched and fixed between the upper and lower parts. After that, the mold 1 is inserted and positioned at a predetermined position between the upper mold 4 and the lower mold 5 of the mold, and the mold 1 is operated to suppress the elongation of the annular resin material with the jig 7. The rubber elastic material 21 placed in advance in the mold 1 is vulcanized and molded, and the resin material 3 is adhered to the lip sliding surface 6 of the rubber-like elastic material 21. Finally, the excess portions of the annular resin material 3 and the rubber-like elastic material 21 are cut at the diagonal line portion 22. Also, it is preferable to make a plurality of holding jigs 7 and always fix the resin material 3 at room temperature, that is,
The jig that has been used once is not used in the next oil seal manufacturing process, and if another jig is used, the resin material can be fixed at room temperature at all times, and the thermal expansion during setting of the resin material 3 can be prevented. Can be prevented. FIG. 2 shows the oil seal before molding using the holding jig 7, and FIG. 3 shows the oil seal after molding.
本発明によれば、環状樹脂素材の内周縁をおさえ治具で
固定して成形型内の所定位置に位置決めする工程と位置
決めされた環状樹脂素材の伸びをおさえ治具で抑えつつ
ゴム状弾性体素材を加硫成形してゴム状弾性体素材に環
状樹脂素材を一体に接着する工程とを有するが故に、樹
脂素材を確実に所定位置に固定することができ、又、成
形時に樹脂素材か熱膨張により又はゴム流動により伸び
所定位置からずれることによってリップ部のシール機能
が低下することを防止しオイルシールの不良品を排除し
得る。更に、複数個のおさえ治具を順次使用すれば、予
めおさえ治具に樹脂素材を設定することかできるので成
形型にその都度樹脂素材を設定する時間を短縮すること
ができるので生産効率を上げることができる。According to the present invention, the process of fixing the inner peripheral edge of the annular resin material with a holding jig and positioning it at a predetermined position in the mold, and suppressing the elongation of the positioned annular resin material with the holding jig while holding the rubber-like elastic material Because the process involves vulcanization molding the material and bonding the annular resin material to the rubber-like elastic material, the resin material can be securely fixed in place, and the resin material is not heated during molding. It is possible to prevent the sealing function of the lip portion from deteriorating due to expansion or movement of the rubber and from being displaced from a predetermined position, thereby eliminating defective oil seals. Furthermore, if you use multiple holding jigs in sequence, you can set the resin material on the holding jigs in advance, which reduces the time it takes to set the resin material on the mold each time, increasing production efficiency. be able to.
第１図は、本発明によるおさえ治具の縦断面図、第２図
は、おさえ治具の成形前の成形型での位置を示す縦断面
図、第３図は、成形後のおさえ治具の位置を示す縦断面
図、第４図は、従来例のオイルシールの製造方法を示す
縦断面図及び第５図は、従来のオイルシールの製造方法
によって製造されたオイルシールの縦断面図である。
符号の説明
ｌ・・・成形型 ２・・・成形用キャビティ
３：環状樹脂素材 ４・・・上型
５・・・下型 ７・・・おさえ治具８・・
・上方部分 ９・・・下方部分ＩＯ・・・傾斜
面
第１図
第４図
第５図Fig. 1 is a longitudinal cross-sectional view of a holding jig according to the present invention, Fig. 2 is a longitudinal cross-sectional view showing the position of the holding jig in the mold before molding, and Fig. 3 is a longitudinal cross-sectional view of the holding jig after molding. FIG. 4 is a vertical cross-sectional view showing the conventional oil seal manufacturing method, and FIG. 5 is a vertical cross-sectional view of the oil seal manufactured by the conventional oil seal manufacturing method. be. Explanation of symbols l... Molding mold 2... Molding cavity 3: Annular resin material 4... Upper mold 5... Lower mold 7... Holding jig 8...
・Upper part 9...Lower part IO...Slanted surface Figure 1 Figure 4 Figure 5
Claims (2)
形型内の所定位置に位置決めする工程と、位置決めされ
た環状樹脂素材の伸びをおさえ治具によって抑えつつ、
ゴム状弾性体素材を、加硫成形してゴム状弾性体素材に
環状樹脂素材を一体に接着する工程と、上記環状樹脂素
材とゴム状弾性体素材の余剰部分を切断する工程とから
なるオイルシールの製造方法。(1) The process of fixing the inner peripheral edge of the annular resin material with a holding jig and positioning it at a predetermined position in the mold, and suppressing the elongation of the positioned annular resin material with the holding jig,
An oil consisting of a step of vulcanizing and molding a rubber-like elastic material to integrally adhere a circular resin material to the rubber-like elastic material, and a step of cutting the excess portions of the annular resin material and the rubber-like elastic material. Seal manufacturing method.
なり、上部支持体の下面及び下部支持体の上面は樹脂素
材を確実に固定するため互いに協働する凹凸部を有する
ことを特徴とする特許請求の範囲第１項に記載のオイル
シールの製造方法。(2) The holding jig consists of an upper support and a lower support, and the lower surface of the upper support and the upper surface of the lower support have uneven parts that cooperate with each other to securely fix the resin material. A method for manufacturing an oil seal according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057811A JPH0830539B2 (en) | 1987-03-12 | 1987-03-12 | Oil seal manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62057811A JPH0830539B2 (en) | 1987-03-12 | 1987-03-12 | Oil seal manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63225765A true JPS63225765A (en) | 1988-09-20 |
| JPH0830539B2 JPH0830539B2 (en) | 1996-03-27 |
Family
ID=13066306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62057811A Expired - Lifetime JPH0830539B2 (en) | 1987-03-12 | 1987-03-12 | Oil seal manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0830539B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565507U (en) * | 1992-02-24 | 1993-08-31 | エヌオーケー株式会社 | Mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851964U (en) * | 1981-10-06 | 1983-04-08 | 日新製鋼株式会社 | polishing jig |
| JPS5893854U (en) * | 1981-12-21 | 1983-06-25 | 大成道路株式会社 | Jig for direct tensile testing of concrete specimens |
| JPS60227064A (en) * | 1985-04-04 | 1985-11-12 | フエデラル・モーギユル・コーポレーシヨン | Radial lip seal and production unit thereof |
-
1987
- 1987-03-12 JP JP62057811A patent/JPH0830539B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851964U (en) * | 1981-10-06 | 1983-04-08 | 日新製鋼株式会社 | polishing jig |
| JPS5893854U (en) * | 1981-12-21 | 1983-06-25 | 大成道路株式会社 | Jig for direct tensile testing of concrete specimens |
| JPS60227064A (en) * | 1985-04-04 | 1985-11-12 | フエデラル・モーギユル・コーポレーシヨン | Radial lip seal and production unit thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565507U (en) * | 1992-02-24 | 1993-08-31 | エヌオーケー株式会社 | Mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0830539B2 (en) | 1996-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |