JPH07208261A - Method for forming cylinder head cover - Google Patents
Method for forming cylinder head coverInfo
- Publication number
- JPH07208261A JPH07208261A JP672794A JP672794A JPH07208261A JP H07208261 A JPH07208261 A JP H07208261A JP 672794 A JP672794 A JP 672794A JP 672794 A JP672794 A JP 672794A JP H07208261 A JPH07208261 A JP H07208261A
- Authority
- JP
- Japan
- Prior art keywords
- sealing material
- cylinder head
- mold
- head cover
- groove
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、シリンダヘッドカバ
ーの成形方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of molding a cylinder head cover.
【０００２】[0002]
【従来の技術】樹脂製の部品に弾性シール材が付設され
た複合物品を製造する方法としては、例えば特公昭６３
−４５２９２号公報に示されているものがある。2. Description of the Related Art As a method for producing a composite article in which an elastic sealing material is attached to resin parts, for example, Japanese Patent Publication No.
There is one disclosed in Japanese Patent Publication No. 45292.
【０００３】これは、互いに置き換え可能な一対の金型
の一方でプラスチック成型物本体を成形し、次に片側の
金型内に成型物本体を保持したまま、他方の金型の片側
と置き換え、成型物本体のシール面に弾性シール材を成
形するものである。This is because a plastic molded body is molded by one of a pair of molds which can be replaced with each other, and then the molded body is held in the mold on one side and is replaced with one side of the other mold. An elastic sealing material is molded on the sealing surface of the molded body.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記成
型物本体が高温下で使用されたり、油にさらされる環境
で使用される場合には、弾性シール材としてシリコン樹
脂やポリウレタン樹脂を用いると、耐油性が悪かった
り、熱ヘタリ性が悪く、高温下での油のシールには不適
当である。However, when the molded body is used at high temperature or in an environment exposed to oil, if silicone resin or polyurethane resin is used as the elastic sealant, oil resistance will be improved. It is not suitable for oil sealing under high temperature because of poor heat resistance and heat settling property.
【０００５】そこで、弾性シール材をアクリルゴムの様
な高温下でも充分油のシールができる材質にすれば良い
が、それではプラスチック成型物本体を上記方法で製造
する際に１５０℃〜２００℃程度の熱が加わってしまう
ため、成型物本体が熱変形してしまう。Therefore, the elastic sealing material may be made of a material such as acrylic rubber which can sufficiently seal oil even at high temperatures. However, when the plastic molded body is manufactured by the above-mentioned method, the elastic sealing material has a temperature of about 150 to 200 ° C. Since the heat is applied, the molded body is thermally deformed.
【０００６】そこで、この発明は熱変形を生じさせるこ
となくシール材を一体成形可能なシリンダヘッドカバー
の成形方法を提供するものである。Therefore, the present invention provides a method of molding a cylinder head cover which can integrally mold a seal material without causing thermal deformation.
【０００７】[0007]
【課題を解決するための手段】アクリル系のゴムから成
るシール材がエンドレスに予備成形され、このシール材
を金型の溝に嵌合させて位置決めしシール材をインサー
トとして樹脂製のカバー本体を射出成形する。[Means for Solving the Problems] A sealing material made of acrylic rubber is preformed endlessly, and the sealing material is fitted into a groove of a mold for positioning, and a resin cover main body is inserted with the sealing material as an insert. Injection molding.
【０００８】ここで、上記シール材の断面形状をアンダ
ーカット形状としても良く、シール材を金型の溝に対し
て圧入して固定するようにしても良い。Here, the cross-sectional shape of the sealing material may be an undercut shape, or the sealing material may be press-fitted and fixed in the groove of the mold.
【０００９】[0009]
【作用】シール材を予備成形することで、シール材をカ
バー本体の後に成形する場合のようにカバー本体に熱に
よる変形等が生ずるのを防止する。By preforming the seal material, it is possible to prevent the cover body from being deformed by heat as in the case where the seal material is formed after the cover body.
【００１０】また、シール材の断面形状をアンダーカッ
ト形状とすることで、カバー本体からシール材が脱落す
るのを防止でき、シール材を金型の溝に対して圧入する
ことによりシール材を金型に対して確実に固定すること
を可能とする。Further, by making the cross-sectional shape of the sealing material into an undercut shape, it is possible to prevent the sealing material from falling off from the cover body, and by pressing the sealing material into the groove of the mold, It is possible to securely fix it to the mold.
【００１１】[0011]
【実施例】以下、この発明の実施例を図面と共に説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１に示すのはシリンダヘッドカバーの射
出成形用の各々金型としての上型１と下型２であって、
凸状に形成された下型２には環状の溝３が形成され、こ
こに予備成形されたアクリル系のゴム（アクリルゴム，
エチレンアクリルゴム）から成るエンドレス形状のシー
ル材４を嵌合して位置決めしておく。FIG. 1 shows an upper mold 1 and a lower mold 2 each as a mold for injection molding of a cylinder head cover.
An annular groove 3 is formed in the lower mold 2 formed in a convex shape, and an acrylic rubber (acrylic rubber,
An endless seal material 4 made of ethylene acrylic rubber is fitted and positioned.
【００１３】次いで、下型２に対して凹状の上型１を型
締めし、注入ゲート５から樹脂（ガラス繊維入りナイロ
ン）を射出し（図２参照）、図３に示すようにシール材
４がカバー本体６の取付下面６Ａに一体となったシリン
ダヘッドカバーを得る。Next, the concave upper mold 1 is clamped with respect to the lower mold 2 and resin (nylon containing glass fiber) is injected from the injection gate 5 (see FIG. 2), and as shown in FIG. A cylinder head cover integrated with the lower mounting surface 6A of the cover body 6 is obtained.
【００１４】ここで、上記シール材４をアクリル系のゴ
ムとしたのは、ニトリルゴムでは耐熱性が低く、シリコ
ンゴムでは強度が低く、かつ高価で耐油膨潤性が大き
く、フッ素ゴムでは、成形加工性が悪く、かつ高価だか
らである。Here, the reason why the sealing material 4 is made of acrylic rubber is that nitrile rubber has low heat resistance, silicon rubber has low strength, is expensive and has high oil swelling resistance, and fluororubber has a molding process. This is because it is not good and expensive.
【００１５】ここで、図４に示すようにシール材４の断
面形状を上部が徐々に幅広となったアンダーカット形状
にしたり、図５に示すように上部にフランジ部４Ａが形
成されたアンダーカット形状にしたり、図６に示すよう
に上部に球状部４Ｂが形成されたアンダーカット形状に
しても良い。このようにすることでシール材４がカバー
本体６の取付下面６Ａから脱落するのを防止することが
できる。Here, as shown in FIG. 4, the cross-sectional shape of the sealing material 4 is an undercut shape in which the upper portion is gradually widened, or as shown in FIG. 5, an undercut in which a flange portion 4A is formed on the upper portion. The shape may be changed to an undercut shape in which a spherical portion 4B is formed on the upper portion as shown in FIG. By doing so, it is possible to prevent the sealing material 4 from falling off the mounting lower surface 6A of the cover body 6.
【００１６】また、図７に示すように、下型２の溝３に
嵌合するシール材４の下部の幅寸法Ｂを基部の幅寸法Ａ
よりも大きくし、溝３の形状もこれに整合させてシール
材４を圧入したり、あるいは溝３の幅寸法に対してシー
ル材４の幅寸法を大きめにしておきシール材４を溝３に
圧入するようにしても良い。このようにすることで、シ
ール材４を確実に下型２に固定することができる。Further, as shown in FIG. 7, the width dimension B of the lower portion of the sealing material 4 fitted in the groove 3 of the lower mold 2 is changed to the width dimension A of the base portion.
The width of the sealing material 4 is larger than that of the groove 3, and the width of the sealing material 4 is made larger than the width of the groove 3, and the sealing material 4 is set in the groove 3. You may make it press-fit. By doing so, the sealing material 4 can be reliably fixed to the lower mold 2.
【００１７】尚、上記図７に示したシール材４は上部に
フランジ部４Ａが形成されたアンダーカット形状のもの
であるが、アンダーカット形状のものでなくても良い。
また、上記圧入構造はシール材４に部分的に設けるよう
にしても良い。Although the sealing material 4 shown in FIG. 7 has an undercut shape in which the flange portion 4A is formed on the upper portion, it does not have to be an undercut shape.
Further, the press-fitting structure may be partially provided in the seal material 4.
【００１８】このようにしてシリンダヘッドカバーを製
造することにより、カバー本体６が熱により変形したり
するようなことがなく高品質の製品を得ることができ
る。By manufacturing the cylinder head cover in this way, a high quality product can be obtained without the cover body 6 being deformed by heat.
【００１９】[0019]
【発明の効果】請求項１に記載された発明によれば、樹
脂成型物本体を製造してこれにシール材を一体成形する
方法に比較して、カバー本体に熱変形等が生ずることが
なくなり、製品品質を高めることができる。According to the invention described in claim 1, as compared with the method of manufacturing the resin molded product body and integrally molding the sealing material on the resin molded product body, thermal deformation or the like does not occur in the cover body. , Can improve product quality.
【００２０】請求項２に記載された発明によれば、シー
ル材の断面形状をアンダーカット形状としたことによ
り、成形後シール材がカバー本体から脱落することがな
く、したがってカバー本体の組み付け作業を確実かつ容
易に行なうことができる。According to the second aspect of the present invention, since the sealing material has an undercut shape in cross section, the sealing material does not fall off from the cover body after molding. It can be performed reliably and easily.
【００２１】請求項３に記載された発明によれば、シー
ル材を金型の溝に対して圧入して固定することによりシ
ール材を金型に対して確実に固定することができる。According to the third aspect of the invention, the sealing material can be reliably fixed to the mold by press-fitting and fixing the sealing material into the groove of the mold.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例の成形前の説明図。FIG. 1 is an explanatory view of an embodiment of the present invention before molding.
【図２】同型締め状態を示す説明図。FIG. 2 is an explanatory view showing a mold clamped state.
【図３】製品の断面説明図。FIG. 3 is an explanatory cross-sectional view of a product.
【図４】他の実施例の要部断面図。FIG. 4 is a cross-sectional view of the essential parts of another embodiment.
【図５】別の実施例の要部断面図。FIG. 5 is a sectional view of a main part of another embodiment.
【図６】更に別の実施例の要部断面図。FIG. 6 is a sectional view of a main part of still another embodiment.
【図７】他のシール材のセット状態を示す要部断面図。FIG. 7 is a cross-sectional view of essential parts showing a set state of another seal material.
１…上型（金型） ２…下型（金型） ３…溝 ４…シール材 ６…カバー本体 1 ... Upper mold (mold) 2 ... Lower mold (mold) 3 ... Groove 4 ... Seal material 6 ... Cover body
Claims (3)
ンドレスに予後成形され、このシール材を金型の溝に嵌
合させて位置決めしシール材をインサートとして樹脂製
のカバー本体を射出成形することを特徴とするシリンダ
ヘッドカバーの成形方法。1. A seal material made of acrylic rubber is endlessly prognosed, the seal material is fitted into a groove of a mold and positioned, and a resin cover body is injection-molded by using the seal material as an insert. And a method for forming a cylinder head cover.
ト形状としたことを特徴とする請求項１記載のシリンダ
ヘッドカバーの成形方法。2. The method of molding a cylinder head cover according to claim 1, wherein the cross-sectional shape of the sealing material is an undercut shape.
て固定することを特徴とする請求項１又は２記載のシリ
ンダヘッドカバーの成形方法。3. The method of molding a cylinder head cover according to claim 1, wherein the sealing material is press-fitted and fixed in a groove of a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP672794A JPH07208261A (en) | 1994-01-26 | 1994-01-26 | Method for forming cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP672794A JPH07208261A (en) | 1994-01-26 | 1994-01-26 | Method for forming cylinder head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07208261A true JPH07208261A (en) | 1995-08-08 |
Family
ID=11646283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP672794A Pending JPH07208261A (en) | 1994-01-26 | 1994-01-26 | Method for forming cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07208261A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100501458B1 (en) * | 2001-07-12 | 2005-07-18 | 이용학 | Sealing cap of an injecting port for a liquid-containing pack and manufacturing method thereof |
| FR2867412A1 (en) * | 2004-03-02 | 2005-09-16 | Skf Ab | CONNECTION BETWEEN AN ELASTOMERIC PART AND A COMPONENT AND METHOD FOR REALIZING THIS CONNECTION |
| DE102005033905A1 (en) * | 2005-07-15 | 2007-01-25 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Cover, sump or cap-shaped housing connection part manufacturing method for e.g. oil sump, involves spraying plastic onto elastomer unit for forming housing unit, and durably connecting housing unit to frame-shaped fastening part |
| WO2007009738A2 (en) * | 2005-07-15 | 2007-01-25 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Method for producing a cover-, pan- or cap-shaped housing composite part for a motor vehicle unit, and a housing composite part for a motor vehicle unit |
-
1994
- 1994-01-26 JP JP672794A patent/JPH07208261A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100501458B1 (en) * | 2001-07-12 | 2005-07-18 | 이용학 | Sealing cap of an injecting port for a liquid-containing pack and manufacturing method thereof |
| FR2867412A1 (en) * | 2004-03-02 | 2005-09-16 | Skf Ab | CONNECTION BETWEEN AN ELASTOMERIC PART AND A COMPONENT AND METHOD FOR REALIZING THIS CONNECTION |
| DE102005033905A1 (en) * | 2005-07-15 | 2007-01-25 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Cover, sump or cap-shaped housing connection part manufacturing method for e.g. oil sump, involves spraying plastic onto elastomer unit for forming housing unit, and durably connecting housing unit to frame-shaped fastening part |
| WO2007009738A2 (en) * | 2005-07-15 | 2007-01-25 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Method for producing a cover-, pan- or cap-shaped housing composite part for a motor vehicle unit, and a housing composite part for a motor vehicle unit |
| WO2007009738A3 (en) * | 2005-07-15 | 2007-06-28 | Bruss Dichtungstechnik | Method for producing a cover-, pan- or cap-shaped housing composite part for a motor vehicle unit, and a housing composite part for a motor vehicle unit |
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