CN1301378C - Method for sealing metal through inserts and plastics on injection moulding members - Google Patents
Method for sealing metal through inserts and plastics on injection moulding members Download PDFInfo
- Publication number
- CN1301378C CN1301378C CNB2004100243584A CN200410024358A CN1301378C CN 1301378 C CN1301378 C CN 1301378C CN B2004100243584 A CNB2004100243584 A CN B2004100243584A CN 200410024358 A CN200410024358 A CN 200410024358A CN 1301378 C CN1301378 C CN 1301378C
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- Prior art keywords
- inserts
- metal
- heat
- sealing
- plastic
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Abstract
The present invention relates to a sealing method between a metal penetration embedding component and plastic on a plastic molding component. In the plastic molding operation, the metal penetration embedding component and the plastic are molded into a whole. Both end parts of the metal penetration embedding component are exposed out of a plastic main body. The periphery of the embedded part of the metal penetration embedding part is provided with a heat shrinking material used for a sealing function and integrally embedded into the plastic with the metal penetration embedding component. In the heat shrinking operation, the heating shrinking material is leaked from sealing rubber which firmly fills a gap between a heat shrinking pipe and the metal penetration embedding component to completely solve the sealing problem of the heat shrinking pipe and the metal penetration embedding component. The sealing method has the advantages of simple technology, good sealing performance and low sealing cost.
Description
Technical field
The present invention relates to encapsulating method, being automobile more specifically connects sealing between inserts and the plastics with the metal on the moulding.
Background technique
At present, the use of metal insert moulding that has plastics is very extensive, is that requirement is sealing between the two and many component are arranged.Because the material of working of plastics and metal insert is different, their thermal expansion coefficient is inequality, injection moulding is all at high temperature carried out, just have the slit when being returned to normal temperature between the two, with passing service time, its sealability can be worse and worse, and under the situation that requires to seal, the component of this explained hereafter do not reach seal request.Comparatively abominable as the electric switch Environmental Conditions of using on the automobile, modal problem sealing problem, the long-time back of using is different with the thermal coefficient of expansion of plastic body owing to metal insert, form the gap and cause between the interface of metal insert and plastic body, pressure medium such as water, wet goods can see through the gap and enter the electric switch end, burn into damages appliance circuit, even causes electric short circuit.For solving this sealing problem, way commonly used at present has two kinds, a kind of is that the metal insert that embeds is made different in nature curved shape, reach the effect that improves sealing by the embedding interface that prolongs between inserts and the plastics, but this mode exists still two kinds of materials because of the different interfacial gaps that form of thermal coefficient of expansion, for a long time still there is sealing problem in the time, another kind is that inserts is made two links, its joint adds seal ring, and this sealing effect is passable, but manufacture cost is higher.
Summary of the invention
The objective of the invention is to overcome the defective that metal on the existing moulding connects sealing means between inserts and the plastic body, provide a kind of and seal reliable, the simple metal of manufacturing process and connect the encapsulating method between inserts and the plastic body.
The technical solution adopted for the present invention to solve the technical problems is: metal connects the encapsulating method between inserts and the plastic body, during injection moulding metal connect inserts and plastic injection-moulded be one, metal connects the two end part of inserts and exposes plastic body, and metal is useful in the material contracting with heat and metal perforation inserts one embedding plastics of seal action around connecting the inserts embedded part.
Material contracting with heat is a polyolefin band glue heat-shrink tube.
The heat-shrink tube pyrocondensation is connected on the inserts at metal, and heat-shrink tube oozes out sealer during pyrocondensation.
Add man-hour, in advance material contracting with heat is socketed in the embedded part that metal connects inserts, annotating with plastics during injection moulding is one.
Beneficial effect of the present invention: technology is simple, good seal performance, and the sealing cost is low.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is that sealing configuration of the present invention is faced diagrammatic sectional view.
Fig. 2 is the application example sectional view of the present invention in automobile usefulness folk art term heat-sensitive electric switch.
Fig. 3 is the application example sectional view of the present invention in automobile usefulness temperature transducer.
Among the figure, 1. metal connects inserts, 2. plastic body, 3. material contracting with heat.
Embodiment:
Add man-hour, connect the special material contracting with heat (abbreviation heat-shrink tube) of insert surface cover one deck at metal earlier, heat-shrink tube oozes out sealer during pyrocondensation, makes metal connect at first sealing between inserts and the material contracting with heat.Secondly, heat-shrink tube and plastics have compatibility, sealing easily, sealer is firmly filled the slit between heat-shrink tube and the metal perforation inserts, and the cold effect of rising of material contracting with heat can compensate well because of metal connects the gap that the thermal coefficient of expansion difference causes between inserts and the plastic body, and the two sealing problem is thoroughly solved.
Material contracting with heat is a polyolefin band glue heat-shrink tube.
Claims (3)
1. metal connects encapsulating method between inserts and the plastic body on the moulding, during injection moulding metal connect inserts and plastic injection-moulded be one, metal connects the two end part of inserts and exposes plastic body, it is characterized in that the material contracting with heat and the metal that are useful on seal action around metal connects the inserts embedded part connect in the inserts one embedding plastics.
2. metal connects the encapsulating method between inserts and the plastic body on the moulding as claimed in claim 1, it is characterized in that described material contracting with heat is a polyolefin band glue heat-shrink tube.
3. metal connects the encapsulating method between inserts and the plastic body on the moulding as claimed in claim 1, it is characterized in that the heat-shrink tube pyrocondensation is connected on the inserts at metal, and heat-shrink tube oozes out sealer during pyrocondensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100243584A CN1301378C (en) | 2004-06-22 | 2004-06-22 | Method for sealing metal through inserts and plastics on injection moulding members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100243584A CN1301378C (en) | 2004-06-22 | 2004-06-22 | Method for sealing metal through inserts and plastics on injection moulding members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594924A CN1594924A (en) | 2005-03-16 |
| CN1301378C true CN1301378C (en) | 2007-02-21 |
Family
ID=34663460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100243584A Expired - Fee Related CN1301378C (en) | 2004-06-22 | 2004-06-22 | Method for sealing metal through inserts and plastics on injection moulding members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1301378C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458195A (en) * | 2018-02-22 | 2018-08-28 | 宁波央腾汽车电子有限公司 | A kind of sealing structure and forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4615031A (en) * | 1982-07-27 | 1986-09-30 | International Standard Electric Corporation | Injection laser packages |
| CN2491487Y (en) * | 2001-08-29 | 2002-05-15 | 宁波波尔新型建材开发有限公司 | Expansion compensator |
| DE10118771A1 (en) * | 2001-04-09 | 2002-11-07 | Woco Franz Josef Wolf & Co Gmbh | Sealing for a metal part overmolded with plastic |
| CN2527831Y (en) * | 2002-01-04 | 2002-12-25 | 徐亚平 | Plastic water supply pipe rubber ring sealing copper plastic joint |
| CN1458711A (en) * | 2002-05-16 | 2003-11-26 | 福州中能电力设备有限公司 | Cable joint and its producing method |
| CN2599340Y (en) * | 2003-02-18 | 2004-01-14 | 王高献 | Plastic gate valve |
-
2004
- 2004-06-22 CN CNB2004100243584A patent/CN1301378C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4615031A (en) * | 1982-07-27 | 1986-09-30 | International Standard Electric Corporation | Injection laser packages |
| DE10118771A1 (en) * | 2001-04-09 | 2002-11-07 | Woco Franz Josef Wolf & Co Gmbh | Sealing for a metal part overmolded with plastic |
| CN2491487Y (en) * | 2001-08-29 | 2002-05-15 | 宁波波尔新型建材开发有限公司 | Expansion compensator |
| CN2527831Y (en) * | 2002-01-04 | 2002-12-25 | 徐亚平 | Plastic water supply pipe rubber ring sealing copper plastic joint |
| CN1458711A (en) * | 2002-05-16 | 2003-11-26 | 福州中能电力设备有限公司 | Cable joint and its producing method |
| CN2599340Y (en) * | 2003-02-18 | 2004-01-14 | 王高献 | Plastic gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1594924A (en) | 2005-03-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Feng Zongju Document name: Notification to Pay the Fees |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070221 Termination date: 20100622 |