CN105984076A - Double-shot injection moulding shell and injection mold - Google Patents
Double-shot injection moulding shell and injection mold Download PDFInfo
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- CN105984076A CN105984076A CN201510096894.3A CN201510096894A CN105984076A CN 105984076 A CN105984076 A CN 105984076A CN 201510096894 A CN201510096894 A CN 201510096894A CN 105984076 A CN105984076 A CN 105984076A
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- plastic layer
- faying face
- double
- projection
- moulding shell
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to structural design of a shell and discloses a double-shot injection moulding shell and an injection mold. The double-shot injection moulding shell comprises a first plastic layer and a second plastic layer combined with each other, wherein a first combining surface of the first plastic layer is provided with at least one first convex block; a second combining surface of the second plastic layer is provided with a first concave groove corresponding to the first convex block; the first plastic layer and the second plastic layer are combined through the first combining surface and the second combining surface; the first convex block is tightly embedded in the first concave groove. Therefore, the combining area of the two plastic layers of the double-shot injection moulding shell is increased to enable the combination of the two plastic layers to be firmer and prevent the two plastic layers from stripping.
Description
Technical field
The present invention relates to the structure design of housing, particularly to a kind of double-shot moulding shell and injection mould
Tool.
Background technology
The shells such as three anti-mobile phones at present, flat board, transmitter receiver all use double-shot moulding, often have PC+TPU,
PC+PC, PC+ABS, PA+TPU etc., everybody frequently with bi-material average thickness combine set
Meter.But injection product out is often stranded gas, and bi-material combines loosely, be unable to undergo high temperature, high humidity,
The dependence tests such as a water small piece of land surrounded by water, product uses a period of time outer layer to come off.
Summary of the invention
It is an object of the invention to provide a kind of double-shot moulding shell and injection mold, increase double-colored
The bonded area of two plastic layers in injection mo(u)lding shell, so that the combination of two plastic layers is more firm
Gu, it is to avoid the stripping of two plastic layers.
For solving above-mentioned technical problem, embodiments of the present invention provide outside a kind of double-shot moulding
Shell, comprises the first plastic layer and the second plastic layer combined, the first faying face of described first plastic layer
On there is at least one first projection, the second faying face of described second plastic layer has corresponding to described
First groove of one projection, described first plastic layer and described second plastic layer are by described first faying face
Combine with described second faying face and described first projection is closely embedded in described first groove.
Embodiment of the present invention in terms of existing technologies, on the first faying face of described first plastic layer
There is at least one first projection, the second faying face of described second plastic layer has corresponding to described first
First groove of projection, thus, increase the bonded area of two plastic layers in double-shot moulding shell,
The combination making two plastic layers is more firm, it is to avoid the stripping of two plastic layers.
It addition, there is at least one first rough region, on described second faying face on described first faying face
Having the second rough region corresponding to described first rough region, described first rough region is closely fitted together to
In described second rough region.Thus increase the bonded area of two plastic layers further, to increase further
Combine greatly dynamics.
It addition, described first plastic layer has at least one crosses glue hole, described the second of described second plastic layer
Having corresponding to described the second projection crossing glue hole on faying face, described second projection is closely embedded in described
Cross glue hole.Thus increase the bonded area of two plastic layers further, combine dynamics with further increase.
It addition, described first plastic layer has at least one steam vent, described the second of described second plastic layer
Having the 3rd projection corresponding to described steam vent on faying face, described 3rd projection is closely embedded in described
Steam vent, wherein, in described second plastic layer ejection formation in described first plastic layer time, described aerofluxus
Hole is for discharging the gas in injection mold.Thus, it is to avoid described second plastic layer ejection formation is in described
Produce tired gas during the first plastic layer so that two kinds of plastic materials fully combine, faying face can also be increased simultaneously
Long-pending.
Embodiments of the present invention additionally provide the injection mold of a kind of double-shot moulding shell, are used for noting
The molded double-shot moulding shell comprising the first plastic layer and the second plastic layer, described first plastic layer
The first faying face on there is at least one first projection, the injection mold bag of described double-shot moulding shell
Containing: male model, the first master mold and the second master mold, described first master mold and described male model are for injection mo(u)lding institute
Stating the first plastic layer, described second master mold and described male model are for injection mo(u)lding on described first plastic layer
Described second plastic layer is to form described double-shot moulding shell；Have on the inwall of described first master mold
At least one wall depressed part, the inwall of described first master mold is corresponding to forming the first of described first plastic layer
Faying face, described wall depressed part is corresponding to forming described first projection.
It addition, described second master mold has multiple water inlet.Thus so that the flow distance of plastic cement solution
Relatively short, reduce plastic cement solution thermal loss in flow process, allow the bi-material can be the most molten
It is combined.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the double-shot moulding shell according to first embodiment of the invention；
Fig. 2 is the schematic diagram of the first plastic layer according to first embodiment of the invention；
Fig. 3 is the schematic diagram of the first plastic layer according to second embodiment of the invention；
Fig. 4 is the schematic diagram of the first plastic layer according to third embodiment of the invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Bright each embodiment is explained in detail.But, it will be understood by those skilled in the art that
In each embodiment of the present invention, propose many technology to make reader be more fully understood that the application thin
Joint.But, even if there is no these ins and outs and many variations based on following embodiment and amendment,
The application each claim technical scheme required for protection can also be realized.
First embodiment of the present invention relates to a kind of double-shot moulding shell, as shown in Figure 1, 2.
Double-shot moulding shell 1 comprises the first plastic layer 11 and the second plastic layer 12, is respectively provided with the first knot
Conjunction face S and the second faying face (not shown), the first plastic layer and the second plastic layer are by the first faying face
Combine with the second faying face.Wherein, the first plastic layer and the second plastic layer are respectively internal layer and outer layer,
But this is not intended to be limited in any by present embodiment.Double-shot moulding shell 1 for example, phone housing,
Or the shell of other products.Present embodiment to the first plastic layer and the concrete shape of the second plastic layer and
Size is also not intended to be limited in any, and those skilled in the art can be actually needed design according to product.
In present embodiment, the first faying face S of the first plastic layer 11 comprises the first basic faying face
S1 and the first side wall faying face S2, the first side wall faying face S are extended out by the first basic faying face S1
And around the first basic faying face S1.First basic faying face S1 wraps respectively with the first side wall faying face S2
Containing multiple first projections 111, to increase the surface area of the first faying face S.Wherein, multiple first projections
111 the most square or strips, but this is not intended to be limited in any by present embodiment.Further,
The first projection 111 being positioned on the first side wall faying face S2 can also be for dovetail shaped or barb-like.Need
Illustrate is, it is contemplated that the convenience of mould die sinking, the most only by dovetail shaped or the first barb-like projection
It is arranged on the first side wall faying face S2.
In present embodiment, the second plastic layer 12 is penetrated on the first faying face S of the first plastic layer 11
Go out molding to be incorporated into the first plastic layer 11.During ejection formation, corresponding on the first faying face S
The position of multiple first projections 111, the second plastic layer 12 is formed multiple first groove, the first projection
111 are closely embedded in the first groove, thus increase the first faying face and the bonded area of the second faying face.
Further, the dovetail shaped on the first side wall faying face S2 or the first barb-like projection also enhance knot
Make a concerted effort to spend.
Second embodiment of the present invention relates to a kind of double-shot moulding shell, as shown in Figure 3.Second
Embodiment and the first embodiment are roughly the same, are in place of the main distinction: implement in the present invention second
In mode, the first faying face S of the first plastic layer 11 also has multiple first rough region 112, slightly
Rough region for example, has veined region.During ejection formation, corresponding on the first faying face S
The position of multiple first rough region 112, the second plastic layer 12 is formed multiple second rough region, many
Individual first rough region is the most closely embedded in multiple second rough region (not shown).Thus, first
Rough region and the second rough region can increase the first faying face S and the bonded area of the second faying face,
The dynamics of combination can also be increased simultaneously.Wherein, present embodiment to the first rough region in the first faying face
Particular location on S is not intended to be limited in any, and Fig. 3 only schematically shows.
Third embodiment of the present invention relates to a kind of double-shot moulding shell, as shown in Figure 4.Second
Embodiment and the first embodiment are roughly the same, are in place of the main distinction: implement in the present invention second
In mode, the first faying face S of the first plastic layer 11 also has multiple glue hole 113 excessively.In penetrating into
During type, corresponding to the positions crossing glue hole 113 multiple on the first faying face S, the second plastic layer 12
The multiple second projection (not shown) of upper formation, multiple second projections are the most closely embedded in multiple glue hole excessively
113.Thus so that in injection moulding process, two kinds of plastic materials fully combine, and increase the first combination the most further
Face S and the bonded area of the second faying face.Wherein, cross that glue hole 113 is the most square or strip, so
And this is not intended to be limited in any by present embodiment.
Further, the first plastic layer also has multiple steam vent (not shown), the of the second plastic layer
There is on two faying faces the 3rd projection (not shown) corresponding to steam vent.The effect of steam vent is:
In the second plastic layer ejection formation in the first plastic layer time, discharge the gas in injection mold.Thus, make
Will not be stranded gas when obtaining second time injection (i.e. ejection formation the second plastic layer), two kinds of plastic materials are fully tied
Close, bonded area can also be increased simultaneously.
4th embodiment of the present invention relates to the injection mold of a kind of double-shot moulding shell, is used for noting
The molded double-shot moulding shell comprising the first plastic layer and the second plastic layer.Wherein, the first plastic cement
Having at least one first projection on first faying face of layer, it is right that the second faying face of the second plastic layer has
First groove of the first projection described in Ying Yu.The injection mold of double-shot moulding shell comprises: male model,
First master mold and the second master mold, the first master mold and male model are for injection mo(u)lding the first plastic layer, the second master mold
With male model for injection mo(u)lding the second plastic layer on the first plastic layer to form double-shot moulding shell.
In present embodiment, the inwall of the first master mold comprises end inwall and side inwall, and side inwall by the end
The edge of wall extends out.All can comprise multiple wall depressed part on end inwall and side inwall, wall caves in
Portion can be square or strip, but this is not intended to be limited in any by present embodiment.Further, in side
Wall depressed part on wall can be also dovetail shaped or barb-like (in view of the convenience of die sinking, only by side
The wall depressed part of wall is set to dovetail shaped or barb-like).When injection mo(u)lding the first plastic layer, first
The end inwall of master mold, side inwall and male model be internally formed the first die cavity, this first cavity is corresponding to real
The size and shape of the first plastic layer needed for border.Wherein, the inwall of the first master mold corresponds to formation first
First faying face of plastic layer.That is, end inwall is corresponding to forming the first basic faying face, on end inwall
Wall depressed part is corresponding to forming the first projection on the first basic faying face；Side inwall is corresponding to formation the
One sidewall faying face, the wall depressed part on the inwall of side is corresponding to forming first on the first side wall faying face
Projection.
In present embodiment, the end inwall of the first master mold also comprises multiple wall rough region, with correspondence
Multiple first rough region on the basic faying face of form the first plastic layer first.The end of the first master mold
Multiple wall projection can also be had inside inwall and/or side.According to actual needs, can be by wall projection
It is sized and dimensioned to the size corresponding to crossing glue hole, substantially combines being correspondingly formed the first of the first plastic layer
Multiple glue holes excessively on face and/or the first side wall faying face；Or, can being sized and dimensioned to wall projection
Corresponding to the size of steam vent, to be correspondingly formed the first of the first plastic layer the basic faying face and/or first
Multiple steam vents on sidewall faying face.
In present embodiment, the second master mold has multiple water inlet.When injection mo(u)lding the second plastic layer,
First the first plastic layer is positioned in the second die cavity that the second master mold and male model are formed, then by multiple enter water
Mouth is injected simultaneously into plastic cement solution, with molding the second plastic layer on the first plastic layer.Multiple water inlets can
The flow distance making plastic cement solution is relatively short, thus reduces plastic cement solution heat in flow process
Loss, bi-material can fully be fused together, i.e. makes the first plastic layer and the second plastic layer more
Add and be firmly combined together.
It is seen that, the 4th embodiment is and the double-shot moulding described in the first to the 3rd embodiment
The injection mold embodiment that shell is corresponding, the 4th embodiment can be mutual with the first to the 3rd embodiment
Coordinate and implement.The relevant technical details mentioned in first to the 3rd embodiment is the most still
Effectively, in order to reduce repetition, repeat no more here.Correspondingly, that mentions in the 4th embodiment is relevant
Ins and outs are also applicable in the first embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are realize the present invention concrete
Embodiment, and in actual applications, can to it, various changes can be made in the form and details, and the most inclined
From the spirit and scope of the present invention.
Claims (9)
1. a double-shot moulding shell, comprises the first plastic layer and the second plastic layer combined,
It is characterized in that:
There is on first faying face of described first plastic layer at least one first projection, described second plastic layer
The second faying face on there is the first groove corresponding to described first projection, described first plastic layer and institute
State the second plastic layer to be combined with described second faying face by described first faying face and described first convex
Block is closely embedded in described first groove.
Double-shot moulding shell the most according to claim 1, it is characterised in that described first
Faying face comprises the first basic faying face and the first side wall faying face, and described the first side wall faying face is by described
The edge of the first basic faying face extends out, and be positioned on described the first side wall faying face is described first convex
Block is dovetail shaped or barb-like.
Double-shot moulding shell the most according to claim 1, it is characterised in that described first
There is on faying face at least one first rough region, described second faying face has corresponding to described first
Second rough region of rough region, described first rough region is closely embedded in described second rough region
Territory.
Double-shot moulding shell the most according to claim 1, it is characterised in that described first
Plastic layer have at least one cross glue hole, described second faying face of described second plastic layer has corresponding to
Second projection in described glue hole excessively, described second projection is closely embedded in described glue hole excessively.
Double-shot moulding shell the most according to claim 1, it is characterised in that described first
Plastic layer has at least one steam vent, described second faying face of described second plastic layer has corresponding to
3rd projection of described steam vent, described 3rd projection is closely embedded in described steam vent,
Wherein, in described second plastic layer ejection formation in described first plastic layer time, described steam vent use
Gas in discharging injection mold.
6. the injection mold of a double-shot moulding shell, it is characterised in that for injection mo(u)lding bag
Double-shot moulding shell containing the first plastic layer and the second plastic layer, the first knot of described first plastic layer
Having at least one first projection on conjunction face, the injection mold of described double-shot moulding shell comprises:
Male model, the first master mold and the second master mold, described first master mold and described male model are for injection mo(u)lding institute
Stating the first plastic layer, described second master mold and described male model are for injection mo(u)lding on described first plastic layer
Described second plastic layer is to form described double-shot moulding shell；
There is on the inwall of described first master mold at least one wall depressed part, the inwall pair of described first master mold
Should be in forming the first faying face of described first plastic layer, described wall depressed part is corresponding to forming described the
One projection.
The injection mold of double-shot moulding shell the most according to claim 6, it is characterised in that
There is on described first faying face at least one first rough region, the inwall of described first master mold has to
A few wall rough region, described wall rough region is corresponding to forming described first rough region.
The injection mold of double-shot moulding shell the most according to claim 6, it is characterised in that
Described first plastic layer has at least one and crosses glue hole, and the inwall of described first master mold has at least one wall
Projection, described wall projection crosses glue hole corresponding to formation is described.
The injection mold of double-shot moulding shell the most according to claim 6, it is characterised in that
Described second master mold has multiple water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096894.3A CN105984076A (en) | 2015-03-04 | 2015-03-04 | Double-shot injection moulding shell and injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096894.3A CN105984076A (en) | 2015-03-04 | 2015-03-04 | Double-shot injection moulding shell and injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105984076A true CN105984076A (en) | 2016-10-05 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510096894.3A Pending CN105984076A (en) | 2015-03-04 | 2015-03-04 | Double-shot injection moulding shell and injection mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN105984076A (en) |
Cited By (2)
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| CN107932822A (en) * | 2016-10-12 | 2018-04-20 | 现代自动车株式会社 | The manufacture method of doorsteps OR gate sill |
| CN111231222A (en) * | 2020-01-18 | 2020-06-05 | 深圳市吉迩科技有限公司 | Three-proofing aerosol generating device main body, aerosol generating device and double-color injection molding method |
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| CN111231222B (en) * | 2020-01-18 | 2022-03-29 | 深圳市吉迩科技有限公司 | Three-proofing aerosol generating device main body, aerosol generating device and double-color injection molding method |
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Application publication date: 20161005 |