CN102922668B - Waterproof silica gel injection mold structure - Google Patents
Waterproof silica gel injection mold structure Download PDFInfo
- Publication number
- CN102922668B CN102922668B CN201210431913.XA CN201210431913A CN102922668B CN 102922668 B CN102922668 B CN 102922668B CN 201210431913 A CN201210431913 A CN 201210431913A CN 102922668 B CN102922668 B CN 102922668B
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- China
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- silica gel
- gel injection
- cavity
- 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 Waterproof silica gel injection mold structure, the Waterproof silica gel injection mold structure on the plastic cement structural member be especially integrated by double-colored technological forming.
Background technology
3C electronic product there are certain requirements water-proof function usually, cover for mobile phone USB, mobile phone USB lid is generally plastic cement and adds TPU dual-color forming, wherein lid is plastic material, the afterbody extended from lid, buckle and muscle position are TPU material, and traditional method uses manual operations to paste the way of silica gel ring to realize waterproof object, but its assembly precision of this mode is difficult to ensure, easily cause size unstable, classification of waterproof is difficult to ensure the problems such as card.Meanwhile, due to needs manual operations, cannot carry out automated production, efficiency is difficult to improve.Present technique is mainly in-mould injection liquid-state silicon gel, make its thermoset forming, but the heat resistance of TPU is relatively poor in the bi-material that mobile phone USB covers, and liquid-state silicon gel usually needs higher temperature when in-molded, therefore, in the process that follow-up liquid-state silicon gel is shaping, TPU, due to heat shrinkable, easily causes its original size greatly to be shunk, thus produce a large amount of defective products, cause larger economic loss.
Summary of the invention
For overcoming the deficiencies in the prior art and Problems existing, the invention provides a kind of plastic cement structural member, in water-proof silica-gel injection molding process, thermal insulation protection being carried out to plastic cement structural member, ensureing the Waterproof silica gel injection mold structure of its original dimensional accuracy.
The present invention is achieved by the following technical solutions:
A kind of Waterproof silica gel injection mold structure, water-proof silica-gel injection moulding post forming is carried out 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 plastic cement structural member is provided with cavity volume, collet is provided with in cavity volume, rear cavity is also provided with mold insert, silica gel adapted to injection system, cooling system and heating bar, described mold insert, rear cavity form water-proof silica-gel injection moulding die cavity with between plastic cement structural member.
Described collet is the cell type of interior sky, and box portion is fixed on rear cavity, and cassette cover portion is fixed on front cavity.
The described yielding position of plastic cement structural member is suspended in collet when matched moulds state.
Described heating bar is the heating bar carrying warming line, often organizes independent temperature control.
The present invention compared with the prior art, collet is designed to cell type, in matched moulds silica gel injection molding process, plastic cement structural member holds yielding position and is suspended in collet, independent heat insulation process is carried out to this mutability position, because collet intracavity space is enough large, front and back mould high temperature can be effectively avoided to affect the heat radiation of plastic cement structural member; Adopt the mould heat insulation effect of this structure significantly to promote, plastic cement structural member can adopt the good plastic material of heat resistance, thus silica gel sulfuration can adopt higher temperature, obtains shorter molding cycle, greatly improves the production capacity of unit equipment.
Accompanying drawing explanation
Fig. 1 is matched moulds duty cut-away illustration of the present invention;
Fig. 2 is the plastic parts structural representation in a certain embodiment of the present invention;
Fig. 3 is collet structural representation of the present invention.
In 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.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with accompanying drawing, the present invention is described in further detail.It should be pointed out that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
As shown in accompanying drawing 1,2,3, a kind of Waterproof silica gel injection mold structure, water-proof silica-gel injection mo(u)lding is carried out in type plastic cement structural member 4, plastic cement structural member 4 adds 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 as the buckle 42 of plastic cement structural member 4 and the position of afterbody 41, elongated afterbody 41 is yielding position; Be provided with collet 5 in cavity volume, the afterbody 41 of plastic cement structural member 4 is suspended in collet 5, and there is enough large space collet 5 inside, and reducing mold temperature under maximum case affects the heat radiation of the elongate tail 41 of plastic cement structural member 4.Plastic cement structural member 4 is the good plastic material of heat resistance, to use higher curing temperature during silica gel injection mo(u)lding, shortens molding cycle, improves unit equipment production capacity.Described collet 5 is the cell 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, and during matched moulds state, elongated afterbody 41 envelopes by collet 5.Rear cavity 2 is also provided with mold insert 3, silica gel adapted to injection system, cooling system and heating bar 6, described heating bar 6, for carrying the heating bar of warming line, often organizes independent temperature control; Described mold insert 3, rear cavity 2 form silica gel injection moulding die cavity 7 with between plastic cement structural member 4; The silica gel that the present embodiment adopts is self-adhering-type liquid-state silicon gel, ensures the adhesion strength with plastic cement structural member 4.
The content mentioned in above-described embodiment is not limitation of the invention, and under the prerequisite not departing from inventive concept of the present invention, any apparent replacement is all within protection scope of the present invention.
Claims (4)
1. a Waterproof silica gel injection mold structure, water-proof silica-gel injection moulding post forming is carried out 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 plastic cement structural member is provided with cavity volume, collet (5) is provided with in cavity volume, rear cavity (2) is also provided with mold insert (3), silica gel adapted to injection system, cooling system and heating bar (6), described mold insert (3), rear cavity (2) form water-proof silica-gel injection moulding die cavity with between plastic cement structural member (4).
2. Waterproof silica gel injection mold structure according to claim 1, is characterized in that: the cell type that described collet (5) is interior sky, and box body (51) partial fixing is in rear cavity (2), and lid (52) partial fixing is in front cavity (1).
3. Waterproof silica gel injection mold structure according to claim 2, is characterized in that: the yielding position of described plastic cement structural member (4) is suspended in collet (5) when matched moulds state.
4. Waterproof silica gel injection mold structure according to claim 3, is characterized in that: described heating bar (6), for carrying the heating bar of warming line, often organizes 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 CN102922668A (en) | 2013-02-13 |
| CN102922668B true CN102922668B (en) | 2015-05-13 |
Family
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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)
| Country | Link |
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| CN (1) | CN102922668B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106572613B (en) * | 2014-10-15 | 2019-07-26 | 广东劲胜智能集团股份有限公司 | Ultra-thin waterproof case battery integrated formed structure, making apparatus and production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| 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 |
-
2012
- 2012-11-01 CN CN201210431913.XA patent/CN102922668B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN102922668A (en) | 2013-02-13 |
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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 |