JPH0932925A - Gasket integral forming method for resin part - Google Patents
Gasket integral forming method for resin partInfo
- Publication number
- JPH0932925A JPH0932925A JP20745495A JP20745495A JPH0932925A JP H0932925 A JPH0932925 A JP H0932925A JP 20745495 A JP20745495 A JP 20745495A JP 20745495 A JP20745495 A JP 20745495A JP H0932925 A JPH0932925 A JP H0932925A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- groove
- gasket groove
- resin part
- molding
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、樹脂部品に対するガ
スケットの一体成形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 for integrally molding a gasket with a resin part.
【０００２】[0002]
【従来の技術及びその課題】従来、図４に示すような樹
脂部品１に形成されたガスケット溝２内にガスケットを
一体成形させるに際し、この樹脂部品１を一方の型とみ
なして、この樹脂部品１に密封型５を図５のように密着
整合させて、密封型５に形成されている成形空間Ｋ内に
２液混合熱硬化型のシリコンを充填して、前記ガスケッ
ト溝２内にシリコンによるガスケットＧを一体形成する
のであるが、前記密封型５には一対の突起５１，５１が
形成されており、この突起５１，５１が前記ガスケット
溝２の周囲に配置され、密封型５と樹脂部品１を型締め
する力により、樹脂部品１が高温の状態であるため、こ
の突起５１，５１を介しガスケット溝２の開口側すなわ
ち成形空間Ｋ側が塑性変形されて、開口側の幅ｈ２がガ
スケット溝２の底の幅ｈ１よりも狭小となり、これによ
りガスケットＧの脱落防止を図っている。2. Description of the Related Art Conventionally, when integrally molding a gasket in a gasket groove 2 formed in a resin component 1 as shown in FIG. 4, this resin component 1 is regarded as one mold and this resin component is regarded as one mold. As shown in FIG. 5, the sealing die 5 is closely aligned with the sealing die 5, and the molding space K formed in the sealing die 5 is filled with a two-liquid mixed thermosetting type silicon, and the gasket groove 2 is filled with silicon. Although the gasket G is integrally formed, a pair of protrusions 51, 51 is formed on the sealing mold 5, and the protrusions 51, 51 are arranged around the gasket groove 2 to form the sealing mold 5 and the resin component. Since the resin component 1 is in a high temperature state due to the force of clamping the mold 1, the opening side of the gasket groove 2, that is, the molding space K side is plastically deformed through the protrusions 51, 51, and the width h2 on the opening side is reduced to the gasket groove. Bottom of 2 It becomes narrower than the width h1, thereby aiming the captive gasket G.
【０００３】このような従来方法においては、ガスケッ
ト溝２の周囲を機械的に塑性変形させるため、密封型５
の突起５１，５１を当接させるスペースが樹脂部品１側
に必要であり、樹脂部品１が極めて小さい部品である場
合にはこのような突起５１，５１を当接させるスペース
がないため、このような方法は使用できないという問題
点があった。また、樹脂部品１を高温の状態としてシリ
コンを充填させるものであり、設備が大型化して専用機
械が必要であるという問題点があった。また、成形させ
るガスケットＧの圧縮率を一定範囲に収めるために図６
のような専用のスペーサー５２，５２を設ける必要があ
り、構造が複雑となってコストアップしてしまうという
問題点もあった。In such a conventional method, since the periphery of the gasket groove 2 is mechanically plastically deformed, the sealed mold 5 is used.
Since a space for abutting the projections 51, 51 on the resin component 1 side is necessary, and when the resin component 1 is an extremely small component, there is no space for abutting the protrusions 51, 51. There was a problem that this method could not be used. Further, since the resin component 1 is filled with silicon in a high temperature state, there is a problem that the equipment becomes large and a dedicated machine is required. Further, in order to keep the compression rate of the gasket G to be molded within a certain range, FIG.
It is necessary to provide the dedicated spacers 52, 52 as described above, and there is also a problem that the structure becomes complicated and the cost increases.
【０００４】[0004]
【課題を解決するための手段】本発明は上記従来の問題
点に鑑み案出したものであって、専用機械等を必要とせ
ず、また小さな樹脂部品であっても良好にガスケットを
一体成形することのできる成形法を提供せんことを目的
とし、その要旨は、樹脂部品に形成されたガスケット溝
内に２液混合熱硬化シリコンを充填してガスケットを前
記ガスケット溝内に一体成形する成形法であって、前記
樹脂部品のガスケット溝の開口側に該ガスケット溝より
大径の係合溝を該ガスケット溝と同心状に形成し、前記
樹脂部品に密着整合される密封型には、前記係合溝に密
着係合し前記ガスケット溝より僅かに小径の成形空間を
形成する圧縮率規制突起を突設し、該圧縮率規制突起を
前記係合溝に密着係合させた状態で前記ガスケット溝及
び成形空間内にシリコンを加圧充填し、シリコンの硬化
するまで加圧力を維持することである。The present invention has been devised in view of the above-mentioned problems of the prior art, and does not require a dedicated machine or the like, and even if it is a small resin part, the gasket can be integrally molded well. The purpose of the present invention is not to provide a molding method capable of forming a gasket, and the gist thereof is a molding method in which a gasket groove formed in a resin part is filled with a two-component mixed thermosetting silicone to integrally mold the gasket into the gasket groove. And an engaging groove having a diameter larger than that of the gasket groove is formed concentrically with the gasket groove on the opening side of the gasket groove of the resin component, and the engagement is provided in the sealed type that is closely aligned with the resin component. A compression rate restricting protrusion is formed so as to tightly engage with the groove to form a molding space having a diameter slightly smaller than that of the gasket groove, and the gasket groove and the gasket groove in a state where the compression rate restricting protrusion is closely engaged with the engaging groove. In the molding space Con was pressure filled with, it is to maintain the pressure until the curing of the silicone.
【０００５】[0005]
【作用】樹脂部品側に形成された係合溝内に、密封型に
形成された圧縮率規制突起を密着係合させて、この状態
で成形空間及びガスケット溝内にシリコンを圧入し、硬
化するまで加圧し続けることにより、ガスケット内部に
ガスケット溝の内壁への加圧力が発生して、これにより
強固にガスケットをガスケット溝内に固着させて脱落防
止を図ることができる。[Function] A compression rate regulating projection formed in a hermetic mold is closely engaged with an engagement groove formed on the resin component side, and in this state, silicon is pressed into the molding space and the gasket groove to cure. By continuing to pressurize the gasket, a pressure is applied to the inner wall of the gasket groove inside the gasket, whereby the gasket can be firmly fixed in the gasket groove and prevented from falling off.
【０００６】[0006]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は、樹脂部品１に密封型５を用いて、ガスケ
ット溝２内にガスケットを一体成形する際の、樹脂部品
１と密封型５の要部分解断面構成図であり、樹脂部品１
には所定位置にガスケット溝２が形成されており、この
ガスケット溝２の上面開口側には、このガスケット溝２
よりも大径の係合溝３がガスケット溝２と同心状に形成
されており、樹脂部品１の上面側はシール面４を形成し
ている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded cross-sectional configuration diagram of essential parts of the resin component 1 and the sealing die 5 when integrally molding a gasket in the gasket groove 2 by using the sealing die 5 for the resin component 1.
Has a gasket groove 2 formed at a predetermined position, and the gasket groove 2 is provided on the upper surface opening side of the gasket groove 2.
An engagement groove 3 having a larger diameter than that of the gasket groove 2 is formed concentrically with the gasket groove 2, and a sealing surface 4 is formed on the upper surface side of the resin component 1.
【０００７】一方、このシール面４に密着整合するシー
ル面５ａを有する密封型５には、２液混合熱硬化シリコ
ンを外部より注入する注入口７が形成されており、この
注入口７の内端側には成形空間Ｋが形成され、この成形
空間Ｋの両側には下方へ突出して圧縮率規制突起６，６
が突出形成されたものとなっており、この圧縮率規制突
起６，６は前記係合溝３内に密着状に係合できる寸法に
形成され、密封型５が樹脂部品１と整合一体化された時
には、圧縮率規制突起６，６が係合溝３の内壁または底
壁に密着状となってシール性が確保されるものとなって
いる。On the other hand, in the hermetic mold 5 having the sealing surface 5a which is closely aligned with the sealing surface 4, an injection port 7 for injecting the two-liquid mixed thermosetting silicon from the outside is formed. A molding space K is formed on the end side, and compression rate regulating projections 6, 6 are projected downward on both sides of the molding space K.
Are formed so as to project. The compression rate restricting protrusions 6 and 6 are formed in such a size that they can be tightly engaged with each other in the engaging groove 3, and the sealing mold 5 is aligned and integrated with the resin component 1. In this case, the compression rate restricting projections 6 and 6 are in close contact with the inner wall or the bottom wall of the engagement groove 3 to ensure the sealing property.
【０００８】なお、圧縮率規制突起６，６内の成形空間
Ｋは前記ガスケット溝２の幅寸法よりも僅かに小径なも
のとなっており、図２のように密封型５を整合させた状
態では、前記圧縮率規制突起６，６がガスケット溝２の
上面開口端に被せ状に配置される。この図２の状態か
ら、前記注入口７より２液混合熱硬化シリコンを加圧状
態で注入すると、シリコンは成形空間Ｋ内に充填され、
かつガスケット溝２内に充填されて内部で硬化されてガ
スケットＧが形成されるが、シリコンが硬化するまでの
間は加圧力を継続させることにより、成形されるガスケ
ットＧの内部にはガスケット溝２の内周側面に対し押圧
力が発生することとなり、このガスケット内部で発生す
るガスケット溝２の内周側面に対する加圧押圧力によ
り、ガスケットＧは強固にガスケット溝２内に固着状態
となり、ガスケットＧが抜脱することがない。なお、樹
脂部品１より密封５を脱型した状態では、図３に示すよ
うに、ガスケットＧの上端側の外周には適度な空間Ｓが
形成されることとなり、この空間Ｓは使用時にガスケッ
トＧが良好に圧縮される圧縮空間となり得るものであ
る。The molding space K in the compression rate restricting projections 6 and 6 has a diameter slightly smaller than the width dimension of the gasket groove 2, and the sealing mold 5 is aligned as shown in FIG. Then, the compression rate restricting protrusions 6 and 6 are arranged so as to cover the open end of the upper surface of the gasket groove 2. From this state of FIG. 2, when the two-liquid mixed thermosetting silicone is injected from the inlet 7 under pressure, the silicone is filled in the molding space K,
In addition, the gasket G is filled in the gasket groove 2 and cured inside to form the gasket G. By continuing the pressure until the silicone is cured, the gasket groove 2 is formed inside the formed gasket G. A pressing force is generated on the inner peripheral side surface of the gasket G. Due to the pressing force applied to the inner peripheral side surface of the gasket groove 2 generated inside the gasket, the gasket G is firmly fixed in the gasket groove 2 and the gasket G Does not come off. When the seal 5 is removed from the resin component 1, as shown in FIG. 3, an appropriate space S is formed on the outer periphery of the gasket G on the upper end side. Is a compression space that can be satisfactorily compressed.
【０００９】このように本例では、シリコンを加圧注入
し加圧力を持続させる段階で、ガスケット内部に発生す
る膨脹力により強固にガスケット溝２内にガスケットＧ
を固着させるものであり、従来のような突起５１，５１
によりガスケット溝２を塑性変形させてガスケットの抜
脱防止を図るものではないため、突起５１，５１が不要
であり、従って、樹脂部品１が小さい部品であっても良
好にガスケット溝２内にガスケットＧを一体成形させる
ことができるものとなる。また、圧縮率規制突起６によ
りガスケットＧの圧縮率が適度に規制されるため、従来
のようなスペーサー５２は不要となり、構造が単純で、
大型の専用機等を必要とせず、コストを低減させてガス
ケットを一体成形することができる。As described above, in this embodiment, at the stage of injecting silicon under pressure to maintain the applied pressure, the expansion force generated inside the gasket firmly holds the gasket G in the gasket groove 2.
The projections 51, 51 as in the conventional case
Since the gasket groove 2 is not plastically deformed to prevent the gasket from being pulled out, the protrusions 51, 51 are not necessary, and therefore, even if the resin component 1 is a small component, the gasket groove 2 can be satisfactorily placed in the gasket groove 2. G can be integrally molded. Further, since the compression rate of the gasket G is appropriately regulated by the compression rate regulation projection 6, the conventional spacer 52 becomes unnecessary, and the structure is simple,
The gasket can be integrally formed at a low cost without requiring a large dedicated machine or the like.
【００１０】[0010]
【発明の効果】本発明は、樹脂部品に形成されたガスケ
ット溝内に２液混合熱硬化シリコンを充填してガスケッ
トを前記ガスケット溝内に一体成形する成形法であっ
て、前記樹脂部品のガスケット溝の開口側に該ガスケッ
ト溝より大径の係合溝を該ガスケット溝と同心状に形成
し、前記樹脂部品に密着整合される密封型には、前記係
合溝に密着係合し前記ガスケット溝より僅かに小径の成
形空間を形成する圧縮率規制突起を突設し、該圧縮率規
制突起を前記係合溝に密着係合させた状態で前記ガスケ
ット溝及び成形空間内にシリコンを加圧充填し、シリコ
ンの硬化するまで加圧力を維持することによりガスケッ
トを一体成形するものであり、シリコンを加圧注入し加
圧力を持続させる段階で、ガスケット内部に発生する膨
脹力により強固にガスケット溝内にガスケットを固着さ
せ、ガスケットの抜脱を良好に防ぐことができるものと
なり、従来のような専用機等を必要とせず、コストを低
減させ、かつ小型の樹脂部品に対しても良好にガスケッ
ト溝内にガスケットを一体成形させることが可能となる
効果を有する。The present invention is a molding method for filling a two-component mixed thermosetting silicone into a gasket groove formed in a resin part to integrally mold the gasket into the gasket groove. An engagement groove having a diameter larger than that of the gasket groove is formed on the opening side of the groove concentrically with the gasket groove. A compression rate regulating projection that forms a molding space having a diameter slightly smaller than the groove is provided in a protruding manner, and silicon is pressed into the gasket groove and the molding space with the compression rate regulating projection being in close contact with the engagement groove. The gasket is integrally molded by filling it and maintaining the pressure until the silicone hardens, and at the stage where the pressure is injected and the pressure is maintained, the expansion force generated inside the gasket makes the gasket stronger. The gasket can be firmly fixed in the gasket groove to prevent the gasket from coming off satisfactorily. It does not require a dedicated machine like the conventional one, reduces the cost, and is also good for small resin parts. In addition, it is possible to integrally form the gasket in the gasket groove.
【図１】樹脂部品と密封型の要部分解断面構成図であ
る。FIG. 1 is an exploded cross-sectional configuration diagram of a resin part and a sealed type main part.
【図２】図１の密封型を樹脂部品に整合させた状態の断
面構成図である。FIG. 2 is a cross-sectional configuration diagram showing a state in which the sealed mold of FIG. 1 is aligned with a resin component.
【図３】ガスケット溝内に一体成形されたガスケットの
要部断面図である。FIG. 3 is a cross-sectional view of a main part of a gasket integrally molded in a gasket groove.
【図４】従来の樹脂部品の全体断面図である。FIG. 4 is an overall sectional view of a conventional resin component.
【図５】従来のガスケットの一体成形法の密封型の整合
状態の断面構成図である。FIG. 5 is a cross-sectional configuration diagram of a sealed type in a conventional gasket integral molding method in an aligned state.
【図６】従来の成形法によるスペーサーの説明図であ
る。FIG. 6 is an explanatory diagram of a spacer formed by a conventional molding method.
１ 樹脂部品 ２ ガスケット溝 ３ 係合溝 ４ シール面 ５ 密封型 ５ａ シール面 ６ 圧縮率規制突起 ７ 注入口 Ｋ 成形空間 Ｇ ガスケット Ｓ 空間 1 Resin Parts 2 Gasket Groove 3 Engagement Groove 4 Sealing Surface 5 Sealing Type 5a Sealing Surface 6 Compressibility Control Protrusion 7 Injection Port K Molding Space G Gasket S Space
Claims (1)
２液混合熱硬化シリコンを充填してガスケットを前記ガ
スケット溝内に一体成形する成形法であって、前記樹脂
部品のガスケット溝の開口側に該ガスケット溝より大径
の係合溝を該ガスケット溝と同心状に形成し、前記樹脂
部品に密着整合される密封型には、前記係合溝に密着係
合し前記ガスケット溝より僅かに小径の成形空間を形成
する圧縮率規制突起を突設し、該圧縮率規制突起を前記
係合溝に密着係合させた状態で前記ガスケット溝及び成
形空間内にシリコンを加圧充填し、シリコンの硬化する
まで加圧力を維持することを特徴とする樹脂部品に対す
るガスケットの一体成形法。1. A molding method for filling a gasket groove formed in a resin part with two-liquid mixed thermosetting silicone to integrally form a gasket in the gasket groove, the opening side of the gasket groove of the resin part. An engagement groove having a diameter larger than that of the gasket groove is formed concentrically with the gasket groove, and in a sealed mold that is closely aligned with the resin component, the engagement type is closely engaged with the engagement groove and slightly smaller than the gasket groove. A compression rate restricting projection that forms a small-diameter molding space is provided in a protruding manner, and silicon is pressure-filled into the gasket groove and the molding space in a state where the compression rate restricting projection is closely engaged with the engaging groove. A method of integrally molding a gasket to a resin part, which is characterized by maintaining a pressure force until it is cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20745495A JP3569858B2 (en) | 1995-07-21 | 1995-07-21 | Integral molding method of gasket for resin parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20745495A JP3569858B2 (en) | 1995-07-21 | 1995-07-21 | Integral molding method of gasket for resin parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0932925A true JPH0932925A (en) | 1997-02-07 |
| JP3569858B2 JP3569858B2 (en) | 2004-09-29 |
Family
ID=16540044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20745495A Expired - Fee Related JP3569858B2 (en) | 1995-07-21 | 1995-07-21 | Integral molding method of gasket for resin parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3569858B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121081A (en) * | 2003-10-15 | 2005-05-12 | Uchiyama Mfg Corp | Cylinder head gasket |
| JP2008232159A (en) * | 2007-03-16 | 2008-10-02 | Nok Corp | Manufacturing method for base material integrated type seal structure |
| JP2008232160A (en) * | 2007-03-16 | 2008-10-02 | Nok Corp | Manufacturing method for base material integrated type seal structure |
| JP2014152929A (en) * | 2013-02-08 | 2014-08-25 | Denso Corp | Case having connection part to be sealed |
| CN108240335A (en) * | 2012-07-23 | 2018-07-03 | 艾默生环境优化技术有限公司 | For the injection molding sealing element of compressor |
-
1995
- 1995-07-21 JP JP20745495A patent/JP3569858B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121081A (en) * | 2003-10-15 | 2005-05-12 | Uchiyama Mfg Corp | Cylinder head gasket |
| JP2008232159A (en) * | 2007-03-16 | 2008-10-02 | Nok Corp | Manufacturing method for base material integrated type seal structure |
| JP2008232160A (en) * | 2007-03-16 | 2008-10-02 | Nok Corp | Manufacturing method for base material integrated type seal structure |
| CN108240335A (en) * | 2012-07-23 | 2018-07-03 | 艾默生环境优化技术有限公司 | For the injection molding sealing element of compressor |
| CN108240335B (en) * | 2012-07-23 | 2019-09-20 | 艾默生环境优化技术有限公司 | Injection molding sealing element for compressor |
| JP2014152929A (en) * | 2013-02-08 | 2014-08-25 | Denso Corp | Case having connection part to be sealed |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3569858B2 (en) | 2004-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6382557B2 (en) | Reactor and manufacturing method thereof | |
| KR920017221A (en) | Semiconductor device manufacturing method and mold assembly thereof | |
| US5880401A (en) | Plastic housing of the flameproof enclosure ignition protection type | |
| JP4248394B2 (en) | Instrument having a seal between two housing shells | |
| JPH0932925A (en) | Gasket integral forming method for resin part | |
| JP2015201593A (en) | seal structure | |
| CN112303231A (en) | Sealing member and waterproof structure | |
| JP2014152929A (en) | Case having connection part to be sealed | |
| JPH0834467A (en) | Waterproof type housing structure | |
| WO2016075788A1 (en) | Water-proof control unit and manufacturing method for water-proof control unit | |
| JPH1074560A (en) | Case integrated connector and its forming method | |
| KR200345068Y1 (en) | A sealing structure between a cosmetic vessel and a cap thereof | |
| CN104204499A (en) | Tightly overmoulded component and method for producing such a component | |
| JP2720670B2 (en) | Enclosure engagement structure for small communication equipment | |
| US2859483A (en) | Coalescence of pre-molded parts | |
| JPH01236531A (en) | Rotary switch tightly sealed with anaerobic seal | |
| JP4092952B2 (en) | Resin molding method and apparatus for compacting stator | |
| JP2553934Y2 (en) | Waterproof structure of electrical equipment cable outlet | |
| US6302673B1 (en) | Integrated circuit chip mold seal | |
| JPH04357631A (en) | Seal structure of microswitch | |
| KR960001227Y1 (en) | Pressing apparatus of gasket molder | |
| JPH0655216U (en) | Coil parts using toroidal core | |
| JP2589081Y2 (en) | Waterproof structure of housing | |
| JP2001035588A (en) | Waterproof connector | |
| JP2018166231A (en) | Reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Effective date: 20040226 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040525 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040610 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |