JPH05337969A - Method for molding oil seal and oil seal ring - Google Patents
Method for molding oil seal and oil seal ringInfo
- Publication number
- JPH05337969A JPH05337969A JP4177805A JP17780592A JPH05337969A JP H05337969 A JPH05337969 A JP H05337969A JP 4177805 A JP4177805 A JP 4177805A JP 17780592 A JP17780592 A JP 17780592A JP H05337969 A JPH05337969 A JP H05337969A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- oil seal
- molding
- arrangement portion
- ring arrangement
- 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
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は各種機器に用いられるオ
イルシールの成形方法及びオイルシールへと成形される
オイルシールの環に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding an oil seal used in various devices and an oil seal ring molded into the oil seal.
【０００２】[0002]
【従来の技術】従来、オイルシールの成形方法としては
図２に示すような方法が知られている。2. Description of the Related Art Conventionally, a method shown in FIG. 2 has been known as a method for molding an oil seal.
【０００３】即ち金型１０２，１０３，１０４より構成
されるオイルシール成形型１０１の環配置部１０８へオ
イルシールの環１０７を配置して成形を行っている。That is, molding is performed by arranging the ring 107 of the oil seal on the ring arranging portion 108 of the oil seal molding die 101 composed of the molds 102, 103 and 104.
【０００４】[0004]
【発明が解決しようとする課題】ところで、オイルシー
ルの環１０７を環配置部１０８へ配置する場合、図２
（ｂ）に示すように環の内周部１１４´と環配置部１０
８の側筒部１１３との間隔（クリアランス）ｄが小さく
なるように設定されている。By the way, when the ring 107 of the oil seal is arranged in the ring arrangement portion 108, as shown in FIG.
As shown in (b), the inner peripheral portion 114 ′ of the ring and the ring arrangement portion 10
8 is set so that the clearance (clearance) d from the side tubular portion 113 becomes smaller.
【０００５】これはクリアランスｄを大きくすると成形
時に環１０７が変形を起こしてしまうからである。This is because when the clearance d is increased, the ring 107 is deformed during molding.
【０００６】このような理由でクリアランスｄは小さく
設定されなければならないため、前述のオイルシールの
成形方法でオイルシールの環１０７を環配置部１０８へ
配置すると、環１０７の内周部先端１１４（環１０７が
環配置部１０８へ配置される際に環配置部１０８の際１
１３を通る部分）が金型１０４の錐部１１１の終端部１
１２に引っ掛かり、図２（ａ）に示すように傾斜した状
態で配置されてしまい、不良品ができてしまうことがあ
った。For this reason, the clearance d must be set small. Therefore, when the ring 107 of the oil seal is arranged in the ring arrangement portion 108 by the above-described oil seal molding method, the tip 114 ( 1 when the ring 107 is arranged on the ring arrangement part 108
13 is the end portion 1 of the conical portion 111 of the mold 104.
There was a case where the product was caught in No. 12 and was arranged in an inclined state as shown in FIG.
【０００７】本発明は上記課題を解決するためになされ
たもので、その目的とするところは、オイルシールの環
が環配置部へ配置される際に正しい位置で配置されて成
形が行われるオイルシールの成形方法を提供することに
ある。The present invention has been made to solve the above problems, and an object of the present invention is to form an oil by arranging a ring of an oil seal in a correct position when the ring is arranged in a ring arrangement portion. It is to provide a method of molding a seal.
【０００８】また他の目的は環配置部へ配置される際に
正しい位置で配置されるオイルシールの環を提供するこ
とにある。Yet another object is to provide an oil seal ring that is properly positioned when placed in the ring placement section.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明にあっては、オイルシール成形型の環配置部へ
オイルシールの環を配置して成形を行うオイルシールの
成形方法において、前記オイルシールの環が前記環配置
部へ配置される際に該オイルシールの環で該環配置部の
際を通る部分をあらかじめ欠いて欠部を形成しておき、
該欠部が形成されたオイルシールの環を前記環配置部へ
配置して成形を行うことを特徴とする。In order to achieve the above object, the present invention provides a method for molding an oil seal in which a ring of an oil seal is arranged in a ring arrangement portion of an oil seal molding die for molding. When the ring of the oil seal is arranged in the ring arrangement portion, a portion passing through the ring arrangement portion of the ring of the oil seal is previously cut to form a cutout portion,
It is characterized in that the ring of the oil seal in which the cutout portion is formed is arranged in the ring arrangement portion and molding is performed.
【００１０】また、オイルシール成形型の環配置部へ配
置されることでオイルシールへと成形されるオイルシー
ルの環において、前記環配置部へ配置される際に該環配
置部の際を通る部分を欠いて欠部を形成したことを特徴
とする。Further, in the ring of the oil seal which is molded into the oil seal by being arranged in the ring arrangement portion of the oil seal molding die, when it is arranged in the ring arrangement portion, it passes through the ring arrangement portion. It is characterized in that a cutout is formed by lacking a portion.
【００１１】[0011]
【作用】上記した本発明に係るオイルシールの成形方法
にあっては、オイルシールの環で環配置部の際を通る部
分をあらかじめ欠いておいて環を環配置部へ配置するの
で、環が環配置部にひっかかって傾いた状態で配置され
ることが防がれる。In the above-described oil seal molding method according to the present invention, since the ring of the oil seal is arranged in the ring arrangement portion by omitting the portion passing through the ring arrangement portion in advance, the ring is It is prevented that the ring arrangement part is caught and tilted.
【００１２】また、オイルシールの環で環配置部の際を
通る部分をあらかじめ欠いておくことで、環配置部へ配
置する際に環は環配置部にひっかからない。Further, since the portion of the ring of the oil seal passing through the ring arrangement portion is previously cut, the ring does not get caught in the ring arrangement portion when the ring is arranged in the ring arrangement portion.
【００１３】[0013]
【実施例】以下に本発明に係るオイルシールの成形方法
及びオイルシールの環を図示の実施例に基づいて説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An oil seal molding method and an oil seal ring according to the present invention will be described below with reference to the illustrated embodiments.
【００１４】図１（ａ）において、１はオイルシール成
形型で、上型２，中型３，下型４とより成り、それら各
型２，３，４によってオイルシール５（図１（ｃ））の
形を成すキャビティ６が形成される。In FIG. 1 (a), reference numeral 1 is an oil seal mold, which comprises an upper mold 2, a middle mold 3, and a lower mold 4, and an oil seal 5 (FIG. 1 (c)) is formed by these molds 2, 3, 4. ) Is formed.
【００１５】下型４でキャビティ６の下部を成す部分に
は、オイルシールの環７が配置される環配置部８が形成
されている。A ring arranging portion 8 in which a ring 7 of an oil seal is arranged is formed in a portion of the lower mold 4 which forms a lower portion of the cavity 6.
【００１６】環配置部８は、オイルシールの環７の下端
面９が当接することでオイルシールの環７を載置した状
態で保持する載置部１０と、テーパ状に角が切欠かれた
錐部１１と、錐部１１の終端部１２より下方に切り立っ
た側筒部１３と、を有して成っている。The ring arrangement portion 8 has a taper-shaped notch, and a mounting portion 10 for holding the oil seal ring 7 in a mounted state by abutting the lower end surface 9 of the oil seal ring 7. It has a conical portion 11 and a side tubular portion 13 that stands up below the terminal end 12 of the conical portion 11.
【００１７】環配置部１０へ配置される際にオイルシー
ルの環７で、環配置部１０の側筒部１３の際を通る部分
としての、環の内周部先端１４は環状に欠かれて欠部１
５を形成している。In the ring 7 of the oil seal when it is arranged in the ring arrangement portion 10, the inner peripheral end 14 of the ring, which is a portion that passes by the side cylindrical portion 13 of the ring arrangement portion 10, is notched in a ring shape. Missing part 1
5 is formed.
【００１８】そして環状に欠かれることで環状に段を成
す、欠部１５の段部１６は、錐部１１の終端部１２と略
対向する位置に設定されると共に、面取りされてＲ形状
を成している。The step portion 16 of the notch 15 is set at a position substantially facing the terminal end portion 12 of the conical portion 11 and is chamfered to form an R shape. is doing.
【００１９】なお、欠部１５の径方向Ａの幅は環７の板
厚の２０％程度以内にされている。The width of the notch 15 in the radial direction A is set within about 20% of the plate thickness of the ring 7.
【００２０】上記構成のオイルシールの環７を用いたオ
イルシールの成形方法について以下に説明する。A method of molding an oil seal using the ring 7 of the oil seal having the above structure will be described below.
【００２１】オイルシールの環７は下型４の上方より環
配置部８へ向けて落ろされ、環７の下端面９が環配置部
８の載置部１０に載置されることで、配置がなされる。The ring 7 of the oil seal is dropped from above the lower die 4 toward the ring arrangement portion 8, and the lower end surface 9 of the ring 7 is placed on the placing portion 10 of the ring arrangement portion 8, Placement is done.
【００２２】ところで、環７の内周部先端１４は環状に
欠かれてあらかじめ欠部１５が形成されているので、環
７が環配置部８へ向けて落ろされる際に、環７の内周部
先端１４が環配置部８の錐部１１の終端部１２に引っか
かるのが防がれる。By the way, since the tip 14 of the inner peripheral portion of the ring 7 is notched in a ring shape and the notch 15 is formed in advance, when the ring 7 is dropped toward the ring arrangement portion 8, the ring 7 is It is possible to prevent the tip 14 of the inner peripheral portion from being caught by the terminal portion 12 of the conical portion 11 of the ring arrangement portion 8.
【００２３】また、欠部１５の段部１６は錐部１１の終
端部１２と略対向する位置に設定されると共に、面取り
されてＲ形状を成しているので、段部１６が終端部１２
と接触してもそのＲ形状によって引っかかりが防がれ、
環７が傾いて配置されるのが防がれる。Further, since the step portion 16 of the cutout portion 15 is set at a position substantially facing the terminal end portion 12 of the conical portion 11 and is chamfered to form an R shape, the step portion 16 is formed.
Even if it comes in contact with, the R shape prevents it from getting caught,
It is prevented that the ring 7 is tilted.
【００２４】ここで、仮に傾いた状態で配置されたとし
ても段部１６がＲ形状を成しているため生地１７が流入
されていく状態下で正規の配置に環７が移動することが
可能で、実際それが観察された。Even if the ring 7 is placed in a tilted state, the step portion 16 has an R shape, so that the ring 7 can be moved to a regular position while the cloth 17 is being introduced. So, in fact, it was observed.
【００２５】なお、欠部１５の径方向Ａの幅は環７の板
厚の２０％程度以内にされているので、従来の環の製作
方法と同一工程で欠部１５を備えた環７を製作すること
ができ、欠部１５を設けることによっても工程増となる
ことはない。Since the width of the notch 15 in the radial direction A is set within about 20% of the plate thickness of the ring 7, the ring 7 having the notch 15 is formed in the same step as the conventional ring manufacturing method. It can be manufactured, and the provision of the notch 15 does not increase the number of steps.
【００２６】以上述べたように、オイルシールの環７に
欠部１５を設けておいてオイルシール５を成形すること
により、オイルシールの環７は環配置部８に正しく載置
され、不良品が減少した。As described above, by forming the notch 15 in the ring 7 of the oil seal and molding the oil seal 5, the ring 7 of the oil seal is correctly placed on the ring arrangement portion 8 and a defective product is obtained. Has decreased.
【００２７】そして、環７が正しく載置されるため、オ
イルシールの成形時に環供給が停止されることがなくな
り、オイルシールの製作が従来に比べて容易になった。Since the ring 7 is properly placed, the ring supply is not stopped when the oil seal is molded, and the oil seal is easier to manufacture than before.
【００２８】また、それに伴ってオイルシールの品質も
向上させることができた。In addition, the quality of the oil seal could be improved accordingly.
【００２９】[0029]
【発明の効果】以上説明したように、本発明に係るオイ
ルシールの成形方法にあっては、オイルシールの環で環
配置部の際を通る部分をあらかじめ欠いておいて環を環
配置部へ配置するので、環が環配置部にひっかかって傾
いた状態で配置されることが防がれる。As described above, in the method for molding an oil seal according to the present invention, the ring of the oil seal is cut into the ring arrangement portion by omitting the portion passing through the ring arrangement portion in advance. Since the ring is arranged, it can be prevented that the ring is caught in the ring arrangement portion and is inclined.
【００３０】また、オイルシールの環で環配置部の際を
通る部分をあらかじめ欠いておくことで、環配置部へ配
置する際に環は環配置部にひっかからない。Further, since the portion of the ring of the oil seal that passes through the ring arrangement portion is previously cut off, the ring does not get caught in the ring arrangement portion when the ring is arranged in the ring arrangement portion.
【図１】本発明の一実施例に係るオイルシールの成形方
法及びオイルシールの環について説明するための図であ
り、（ａ）はオイルシール成形型に同オイルシールの環
が載置された成形前の状態を示す図、（ｂ）は同オイル
シール環を示す図、（ｃ）は同成形方法によって製作さ
れたオイルシールの半断面図である。FIG. 1 is a view for explaining a method of forming an oil seal and an oil seal ring according to an embodiment of the present invention, and FIG. 1 (a) shows the oil seal ring placed on an oil seal mold. It is a figure which shows the state before shaping | molding, (b) is a figure which shows the same oil seal ring, (c) is a half cross-sectional view of the oil seal manufactured by the same shaping | molding method.
【図２】従来のオイルシールの成形方法及びオイルシー
ルの環について説明するための図であり、（ａ）はオイ
ルシール成形型に同オイルシールの環が不良状態で載置
された成形前の状態を示す図、（ｂ）は同オイルシール
環が位置決めされた成形後の状態を示す図、（ｃ）は同
成形方法によって正しい状態で製作されたオイルシール
の半断面図である。FIG. 2 is a view for explaining a conventional method of molding an oil seal and a ring of the oil seal, and FIG. 2 (a) is a view showing a state before molding in which the ring of the oil seal is placed in a defective state on an oil seal molding die. The figure which shows a state, (b) is a figure which shows the state after shaping | molding in which the oil seal ring was positioned, and (c) is a half cross-sectional view of the oil seal manufactured in the correct state by the shaping method.
１ オイルシール成形型 ７ オイルシールの環 ８ 環配置部 １５ 欠部 1 Oil seal forming die 7 Oil seal ring 8 Ring arrangement part 15 Missing part
Claims (2)
シールの環を配置して成形を行うオイルシールの成形方
法において、 前記オイルシールの環が前記環配置部へ配置される際に
該オイルシールの環で該環配置部の際を通る部分をあら
かじめ欠いて欠部を形成しておき、該欠部が形成された
オイルシールの環を前記環配置部へ配置して成形を行う
ことを特徴とするオイルシールの成形方法。1. A method for forming an oil seal in which an oil seal ring is arranged in a ring arrangement portion of an oil seal molding die for molding, wherein the oil seal ring is arranged in the ring arrangement portion. A portion of the seal ring passing through the ring arrangement portion is previously cut out to form a cutout portion, and the ring of the oil seal having the cutout portion is arranged in the ring arrangement portion to perform molding. Characteristic oil seal molding method.
れることでオイルシールへと成形されるオイルシールの
環において、 前記環配置部へ配置される際に該環配置部の際を通る部
分を欠いて欠部を形成したことを特徴とするオイルシー
ルの環。2. A ring of an oil seal that is molded into an oil seal by being arranged in the ring arrangement portion of an oil seal mold, and passes through the ring arrangement portion when arranged in the ring arrangement portion. A ring of an oil seal, characterized in that a notch is formed by omitting a part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17780592A JP3285222B2 (en) | 1992-06-12 | 1992-06-12 | Oil seal molding method and oil seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17780592A JP3285222B2 (en) | 1992-06-12 | 1992-06-12 | Oil seal molding method and oil seal ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05337969A true JPH05337969A (en) | 1993-12-21 |
| JP3285222B2 JP3285222B2 (en) | 2002-05-27 |
Family
ID=16037399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17780592A Expired - Fee Related JP3285222B2 (en) | 1992-06-12 | 1992-06-12 | Oil seal molding method and oil seal ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3285222B2 (en) |
-
1992
- 1992-06-12 JP JP17780592A patent/JP3285222B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3285222B2 (en) | 2002-05-27 |
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Legal Events
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|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020129 |
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| LAPS | Cancellation because of no payment of annual fees |