CN102922668A - Waterproof silica gel injection mold structure - Google Patents
Waterproof silica gel injection mold structure Download PDFInfo
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- CN102922668A CN102922668A CN201210431913XA CN201210431913A CN102922668A CN 102922668 A CN102922668 A CN 102922668A CN 201210431913X A CN201210431913X A CN 201210431913XA CN 201210431913 A CN201210431913 A CN 201210431913A CN 102922668 A CN102922668 A CN 102922668A
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- gel injection
- cavity
- silica gel
- injection mold
- plastic cement
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Abstract
Disclosed is a waterproof silica gel injection mold structure. Secondary waterproof silica gel injection molding is performed on a formed plastic structural part. The injection mold comprises a front mold core and a back mold core, wherein an accommodating cavity is arranged at a position corresponding to a protruding portion of the plastic structural part on the back mold core, a heat insulating sleeve is arranged in the accommodating cavity, the back mold core is further provided with an insert, a silica gel injection molding system, a cooling system and a heating rod, and a waterproof silica gel injection molding cavity is formed among the insert, the back mold core and the plastic structural part. According to the injection mold, the effect on dimensional accuracy, production of defective products and economic losses caused by heat radiation to the plastic structural part due to the high temperature in the mold during silica gel molding are avoided.
Description
Technical field
The present invention relates to a kind of water-proof silica-gel injection mold structure, the water-proof silica-gel injection mold structure on the plastic cement structural member that especially has been integrated by double-colored technological forming.
Background technology
The 3C electronic product has certain requirement to water-proof function usually, take mobile phone USB lid as example, mobile phone USB lid is generally plastic cement and adds the TPU dual-color forming, wherein lid is plastic material, be the TPU material from the extended afterbody of lid, buckle and muscle position, traditional method is to realize the waterproof purpose with the way that silica gel ring is pasted in manual operations, but its assembly precision of this mode is difficult to guarantee, easily cause size unstable, classification of waterproof is difficult to ensure the problems such as card.Simultaneously, owing to needing manual operations, can't carry out automated production, efficient is difficult to improve.Present technique is mainly the in-mould injection liquid-state silicon gel, make its thermoset forming, but the heat resistance of TPU is relatively relatively poor in the bi-material of mobile phone USB lid, and liquid-state silicon gel needs higher temperature usually when in-molded, therefore in the process of follow-up liquid-state silicon gel moulding, TPU easily causes its original size greatly to be shunk owing to being subjected to thermal contraction, thereby produce a large amount of defective products, cause larger economic loss.
Summary of the invention
For overcoming the problem of the deficiencies in the prior art and existence, the invention provides a kind of plastic cement structural member and in the water-proof silica-gel injection molding process, the plastic cement structural member is carried out thermal insulation protection, guarantee the water-proof silica-gel injection mold structure of its original dimensional accuracy.
The present invention is achieved by the following technical solutions:
A kind of water-proof silica-gel injection mold structure, carry out water-proof silica-gel injection moulding post forming in type plastic cement structural member, described injection mold comprises front cavity and rear cavity, the described rear cavity position that ledge is corresponding on the plastic cement structural member is provided with cavity volume, be provided with collet in the cavity volume, also be provided with mold insert, silica gel adapted to injection system, cooling system and heating bar on the rear cavity, described mold insert, rear cavity are with forming water-proof silica-gel injection moulding die cavity between the plastic cement structural member.
Described collet is the box type of interior sky, and box portion is fixed on rear cavity, and the lid partial fixing is in front cavity.
The yielding position of described plastic cement structural member is suspended in the collet when the matched moulds state.
Described heating bar is the heating bar that carries the warming line, every group of independent temperature control.
The present invention compared with the prior art, collet design boxing, in matched moulds silica gel injection molding process, the plastic cement structural member holds yielding position and is suspended in the collet, independent heat insulation processing is carried out at this mutability position, because the collet intracavity space is enough large, mould high temperature is on the heat radiation impact of plastic cement structural member before and after can effectively avoiding; Adopt the mould heat insulation effect of this structure significantly to promote, the plastic cement structural member can adopt preferably plastic material of heat resistance, thereby the silica gel sulfuration can be adopted higher temperature, obtains shorter molding cycle, greatly improves the production capacity of unit equipment.
Description of drawings
Fig. 1 is matched moulds duty cut-away illustration of the present invention;
Fig. 2 is the plastic parts structural representation among a certain embodiment of the present invention;
Fig. 3 is collet structural representation of the present invention.
Among the figure: 1-front cavity, 2-rear cavity, 3-mold insert, 4-plastic cement structural member, 41-afterbody, 42-buckle, 5-collet, 51-box body, 52-lid, 6-heating bar, 7-silica gel injection moulding die cavity.
The specific embodiment
Understanding for the ease of those skilled in the art is described in further detail the present invention below in conjunction with accompanying drawing.Should be pointed out that specific embodiment described herein only is used for explaining the present invention, be not intended to limit the present invention.
Shown in accompanying drawing 1,2,3, a kind of water-proof silica-gel injection mold structure, in type plastic cement structural member 4 is carried out the water-proof silica-gel injection mo(u)lding, plastic cement structural member 4 adds the TPU dual-color forming for plastic cement, described injection mold comprises front cavity 1 and rear cavity 2, described rear cavity 2 position that ledge is corresponding on plastic cement structural member 4 is provided with cavity volume, and such as the position of buckle 42 and the afterbody 41 of plastic cement structural member 4, elongated afterbody 41 is yielding position; Be provided with collet 5 in the cavity volume, the afterbody 41 of plastic cement structural member 4 is suspended in the collet 5, and there is enough large space collet 5 inside, reduces mold temperature under the maximum case to the heat radiation impact of the elongated afterbody 41 of plastic cement structural member 4.Plastic cement structural member 4 is preferably plastic material of heat resistance, in order to use higher curing temperature during the silica gel injection mo(u)lding, shortens molding cycle, improves the unit equipment production capacity.Described collet 5 is the box type of interior sky, and box body 51 partial fixings are in rear cavity 2, and lid 52 partial fixings are in front cavity 1, and collet 5 envelopes elongated afterbody 41 during the matched moulds state.Also be provided with mold insert 3, silica gel adapted to injection system, cooling system and heating bar 6 on the rear cavity 2, described heating bar 6 is for carrying the heating bar of warming line, every group of independent temperature control; Described mold insert 3, rear cavity 2 are with forming silica gel injection moulding die cavity 7 between the plastic cement structural member 4; The silica gel that the present embodiment adopts is the self-adhering-type liquid-state silicon gel, guarantees the adhesion strength with plastic cement structural member 4.
The content of mentioning in above-described embodiment is not to be limitation of the invention, and under the prerequisite that does not break away from inventive concept of the present invention, any apparent replacement is all within protection scope of the present invention.
Claims (4)
1. water-proof silica-gel injection mold structure, carry out water-proof silica-gel injection moulding post forming in type plastic cement structural member (4), described injection mold comprises front cavity (1) and rear cavity (2), it is characterized in that: described rear cavity (2) position that ledge is corresponding on the plastic cement structural member is provided with cavity volume, be provided with collet (5) in the cavity volume, also be provided with mold insert (3), silica gel adapted to injection system, cooling system and heating bar (6) on the rear cavity (2), described mold insert (3), rear cavity (2) are with forming water-proof silica-gel injection moulding die cavity between the plastic cement structural member (4).
2. water-proof silica-gel injection mold structure according to claim 1, it is characterized in that: described collet (5) is the box type of interior sky, and box body (51) partial fixing is in rear cavity (2), and lid (52) partial fixing is in front cavity (1).
3. water-proof silica-gel injection mold structure according to claim 2, it is characterized in that: the yielding position of described plastic cement structural member (4) is suspended in the collet (5) when the matched moulds state.
4. water-proof silica-gel injection mold structure according to claim 3 is characterized in that: described heating bar (6) is for carrying the heating bar of warming line, every group of independent temperature control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431913.XA CN102922668B (en) | 2012-11-01 | 2012-11-01 | Waterproof silica gel injection mold structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210431913.XA CN102922668B (en) | 2012-11-01 | 2012-11-01 | Waterproof silica gel injection mold structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102922668A true CN102922668A (en) | 2013-02-13 |
| CN102922668B CN102922668B (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210431913.XA Expired - Fee Related CN102922668B (en) | 2012-11-01 | 2012-11-01 | Waterproof silica gel injection mold structure |
Country Status (1)
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| CN (1) | CN102922668B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106572613A (en) * | 2014-10-15 | 2017-04-19 | 东莞劲胜精密组件股份有限公司 | Ultra-thin waterproof shell and battery integrally molded structure, manufacture apparatus and manufacture method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023765A1 (en) * | 2002-09-06 | 2004-03-18 | Watercom Co., Ltd. | Portable electronic product with waterproof structure and waterproofing method thereof |
| EP2047411A2 (en) * | 2006-07-31 | 2009-04-15 | Oberthur Technologies | Information medium having a male connector and method for producing same |
| CN101471190A (en) * | 2007-12-25 | 2009-07-01 | 比亚迪股份有限公司 | Water-proof keyboard and its manufacturing process |
| CN201333783Y (en) * | 2009-01-19 | 2009-10-28 | 东莞市永新塑胶五金有限公司 | Improved structure of USB interface mold |
| CN202911089U (en) * | 2012-11-01 | 2013-05-01 | 东莞劲胜精密组件股份有限公司 | Waterproof silica gel injection mold structure |
-
2012
- 2012-11-01 CN CN201210431913.XA patent/CN102922668B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023765A1 (en) * | 2002-09-06 | 2004-03-18 | Watercom Co., Ltd. | Portable electronic product with waterproof structure and waterproofing method thereof |
| EP2047411A2 (en) * | 2006-07-31 | 2009-04-15 | Oberthur Technologies | Information medium having a male connector and method for producing same |
| CN101471190A (en) * | 2007-12-25 | 2009-07-01 | 比亚迪股份有限公司 | Water-proof keyboard and its manufacturing process |
| CN201333783Y (en) * | 2009-01-19 | 2009-10-28 | 东莞市永新塑胶五金有限公司 | Improved structure of USB interface mold |
| CN202911089U (en) * | 2012-11-01 | 2013-05-01 | 东莞劲胜精密组件股份有限公司 | Waterproof silica gel injection mold structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106572613A (en) * | 2014-10-15 | 2017-04-19 | 东莞劲胜精密组件股份有限公司 | Ultra-thin waterproof shell and battery integrally molded structure, manufacture apparatus and manufacture method |
| CN104333987B (en) * | 2014-10-15 | 2017-06-06 | 东莞劲胜精密组件股份有限公司 | Ultra-thin waterproof case battery integrated formed structure, making apparatus and preparation method |
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| Publication number | Publication date |
|---|---|
| CN102922668B (en) | 2015-05-13 |
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| C14 | Grant of patent or utility model | ||
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Address after: Changan town in Guangdong province Dongguan City Zhen'an 523878 corner management section Patentee after: Guangdong wins smart group Limited by Share Ltd Address before: Changan town in Guangdong province Dongguan City Zhen'an 523878 corner management section Patentee before: Dongguan Janus Precision Components Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20191101 |