CN107322873A - Lid and preparation method on a kind of Mobile terminal main board - Google Patents
Lid and preparation method on a kind of Mobile terminal main board Download PDFInfo
- Publication number
- CN107322873A CN107322873A CN201710625121.9A CN201710625121A CN107322873A CN 107322873 A CN107322873 A CN 107322873A CN 201710625121 A CN201710625121 A CN 201710625121A CN 107322873 A CN107322873 A CN 107322873A
- Authority
- CN
- China
- Prior art keywords
- ebonite
- mobile terminal
- face
- flexible glue
- piece body
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
Abstract
The embodiments of the invention provide lid and preparation method on a kind of Mobile terminal main board, wherein preparation method includes making the face-piece body of mobile terminal；Face-piece body is carried out on ebonite injection, the side panel that ebonite is coated on to the surrounding of face-piece body by double-color mold；Flexible glue injection is carried out to the face-piece body for being coated with ebonite by double-color mold, flexible glue is coated on the outer surface of ebonite.The embodiment of the present invention solves the problem of water resistance covered on Mobile terminal main board in the prior art is not good.
Description
Technical field
The present invention relates to lid and preparation method in field of mobile terminals, more particularly to a kind of Mobile terminal main board.
Background technology
With continuing to develop for smart mobile phone, smart mobile phone has become the indispensable instrument in people's life.Daily
In life, smart mobile phone serves not only as communication tool, is also used as digital camera, game machine, E-mail address and wallet etc.,
Brought great convenience for people's daily life.But, due to the imprecision of mobile phone waterproof, very may be used when mobile phone is intake
The loss of user data can be caused, therefore it is to improve an importance of handset security to carry out mobile phone waterproof.
Wherein, the waterproof on cell phone mainboard between lid and battery cover is a critically important ring.In the prior art, on mainboard
The technique of lid is only limitted to ebonite gold filled category, and by being covered on mainboard pasting the progress such as auxiliary material foam, silica gel between battery cover
Waterproof, but the water resistance of such waterproof construction is not good, does not reach expected waterproof effect.
The content of the invention
It is an object of the invention to provide lid and preparation method on a kind of Mobile terminal main board, to solve to move in the prior art
The problem of water resistance covered on terminal mainboard is not good.
In a first aspect, the embodiment of the present invention provides the preparation method covered on a kind of Mobile terminal main board, including：
Make the face-piece body of mobile terminal；
Ebonite injection is carried out to the face-piece body by double-color mold, ebonite is coated on to the surrounding of the face-piece body
Side panel on；
Flexible glue injection is carried out to the face-piece body for being coated with the ebonite by the double-color mold, flexible glue is coated on institute
State on the outer surface of ebonite.
Second aspect, the embodiment of the present invention is additionally provided and covered on a kind of Mobile terminal main board, on the Mobile terminal main board
Lid is using obtained by the preparation method covered on the Mobile terminal main board in first aspect；Lid includes on the Mobile terminal main board：
Face-piece body, wherein ebonite is coated with the side panel of the surrounding of the face-piece body, and in the outer of the ebonite
Flexible glue is coated with surface.
So, when the embodiment of the present invention is covered on making Mobile terminal main board, face-piece body is carried out by double-color mold
Ebonite is molded, on the side panel that ebonite is coated on to the surrounding of face-piece body, then by double-color mold to being coated with ebonite
Face-piece body carries out flexible glue injection, and flexible glue is coated on the outer surface of ebonite so that ebonite injection and flexible glue are moulded in same
In-mold molding, improves the production yield covered on Mobile terminal main board；In addition, face-piece body one of the flexible glue with being coated with ebonite
It is body formed so that when the cell rear cover of lid and mobile terminal coordinates on Mobile terminal main board, flexible glue and cell rear cover can be passed through
Side interference crush seal, compatible horizontal waterproof, it is to avoid lid and cell rear cover relief on Mobile terminal main board reduces
The unstability of assembling, and water resistance is improved, solve the water resistance covered on Mobile terminal main board in the prior art
Not good the problem of.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 represents the step flow chart for the preparation method covered in embodiments of the invention on Mobile terminal main board；
Fig. 2 represents the structural representation covered in embodiments of the invention on Mobile terminal main board.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
As shown in figure 1, be the step flow chart for the preparation method covered on Mobile terminal main board in embodiments of the invention, should
Preparation method includes：
Step 101, the face-piece body of mobile terminal is made；
In this step, specifically, face-piece body can be the die casting of the materials such as magnesium alloy, titanium magnesium alloy and aluminium alloy
Product.In addition, make face-piece body when, it is only necessary to use common manufacture craft, you can with using " die cast-
Go to the mouth of a river-go burr-tapping-ground and cleaned-chemical conversion " manufacture craft make face-piece body.
Step 102, ebonite injection is carried out to face-piece body by double-color mold, ebonite is coated on to the surrounding of face-piece body
Side panel on；
In this step, specifically, when completing face-piece body, as shown in Fig. 2 double-color mold opposite can be passed through
Shell body 1 is carried out on ebonite injection, the side panel that ebonite 2 is coated on to the surrounding of face-piece body 1.
It is preferred that, the material of ebonite 2 can be polyamide and the mixture of 50% glass fibre.
In addition, before the step of carrying out ebonite injection to face-piece body by double-color mold, in order to improve ebonite injection
Success rate, can first open up positioning hole on face-piece body, wherein positioning hole and the locating dowel in rear cavity in double-color mold
Relatively；Then positioning hole is located in locating dowel by manipulator, and it is by the suction nozzle of double-color mold that the suction of face-piece body is fixed
In rear cavity.Specifically, the scope in the unilateral gap between positioning hole and locating dowel is 0.02mm to 0.03mm.So, lead to
Cross manipulator to be implanted into face-piece body in the rear cavity of double-color mold, be accurately positioned by positioning hole with locating dowel so that face-piece
Body has obtained accurate restriction in the plane, is then sucked face-piece body in place by the suction nozzle of double-color mold so that face-piece
The accurate limitation that body is obtained on the direction vertical with plane.Certainly, face-piece body is inhaled in the suction nozzle by double-color mold
After being scheduled in rear cavity, face-piece body can be detected by charge coupled cell (Charge-coupled Device, CCD)
Whether precise positioning.
Step 103, flexible glue injection is carried out to the face-piece body for being coated with ebonite by double-color mold, flexible glue is coated on firmly
On the outer surface of glue.
In this step, specifically, after obtaining being coated with the face-piece body of ebonite, with continued reference to Fig. 2, can pass through
Double-color mold is carried out on flexible glue injection, the outer surface that flexible glue 3 is coated on to ebonite 2 to the face-piece body 1 for being coated with ebonite 2, from
And the mobile terminal face-piece completed.
Specifically, the material of flexible glue 3 can be TPUE rubber.
So, the embodiment of the present invention first carries out ebonite injection by double-color mold to face-piece body, and ebonite is coated on into face
On the side panel of the surrounding of shell body, flexible glue injection is then carried out to the face-piece body for being coated with ebonite by double-color mold, will
Flexible glue is coated on the outer surface of ebonite so that ebonite is molded and flexible glue is moulded in same in-mold molding, rather than first will be hard
Replanted after the shaping of glue semi-finished product in soft jelly mould, while this production yield covered on Mobile terminal main board is improved so that
When the cell rear cover of lid and mobile terminal coordinates on Mobile terminal main board, it can be interfered by the side of flexible glue and cell rear cover and squeezed
Means of press seals, so that compatible horizontal waterproof；Additionally due to the extrusion stress during extruding of side is smaller, this avoids mobile terminal master
Lid and cell rear cover relief, reduce the unstability of assembling on plate, and improve water resistance, solve in the prior art
The problem of water resistance covered on Mobile terminal main board is not good.
In addition, further, as shown in Fig. 2 when carrying out ebonite injection to face-piece body by double-color mold, Ke Yitong
Mould before the first of double-color mold is crossed, ebonite injection is carried out to face-piece body 1, the first side 21 of ebonite 2 is coated on face-piece sheet
A rank caved inward is formed on the side panel of the surrounding of body 1, and in second side 22 relative with first side 21 on ebonite 2
Ladder-shaper structure 23.
Specifically, the step structure includes cave inward the successively the first side wall to be formed, second sidewall and the 3rd side wall,
The height A of wherein the first side wall is at least 0.5mm, and the height sum B of second sidewall and the 3rd side wall is at least 1.3mm, and
Horizontal range C between 3rd side wall and the first side wall is at least 0.5mm.Specifically, the height A of the first side wall can be as soft
The sealing position of glue, you can to inject flexible glue since the lower end of the first side wall；In addition second sidewall and the height of the 3rd side wall it
With the length fit dimension that B is flexible glue side, i.e., when being molded flexible glue, the injection length of flexible glue is at least 1.3mm；In addition, the
Horizontal range C between three side walls and the first side wall is the fit dimension between flexible glue and cell rear cover 4.
Specifically, in practical operation, the first cephacoria first and rear cavity matched moulds, the first cephacoria action reserve follow-up note
Mould flexible glue step structure, then matched moulds in place after, the nozzle of double-color mold one inject ebonite, be molded finally by pressurize,
First cephacoria is ejected, and obtains the face-piece body being molded by ebonite.So, the second side 22 of ebonite 2 is formed into one to concave
Sunken step structure 23, can make it that flexible glue can be moulded in the step structure 23 to be formed when carrying out flexible glue injection,
And when enabling on Mobile terminal main board the lid to coordinate fixed with cell rear cover 4, can be by the side of flexible glue 3 and cell rear cover 4
Crush seal is interfered on side, reaches the effect of waterproof.
Further, after step structure is obtained, with continued reference to Fig. 2, by double-color mold to being coated with ebonite
Face-piece body when carrying out flexible glue injection, the face-piece body for being coated with ebonite can be entered by mould before the second of double-color mold
Row flexible glue is molded, on the outer surface that the first side of flexible glue 3 is coated on to second sidewall and the 3rd side wall, and on flexible glue 3 with
A projection knot outwardly, for the cell rear cover clamping with mobile terminal is formed in the relative second side of first side
Structure 31.Its relief structure 31 can be formed at any position in the second side on flexible glue.Specifically, the of flexible glue 3
Two side faces and the first side wall flush, and the outwardly height of projection D of bulge-structure 31 is at least 0.1mm, and bulge-structure
31 Breadth Maximum E is at least 0.3mm.So, when can make it that lid coordinates fixed with cell rear cover 4 on Mobile terminal main board,
Flexible glue 3 can play a part of waterproof sealing, and bulge-structure 31 can be connected in cell rear cover 4, so as to add shifting
While lid is with cell rear cover fix tightly solidity on dynamic terminal mainboard, waterproof seal is added.
Specifically, when implementing flexible glue injection, after the face-piece body for obtaining being molded by ebonite, double-color mold
Suction nozzle all the time by face-piece body inhale be scheduled in rear cavity, rear cavity is remained stationary as, now double-color mold rotate the second cephacoria, will
Second cephacoria carries out matched moulds with rear cavity, and then two nozzles are molded flexible glue in step structure so that flexible glue is in the second cephacoria
Line position is molded, and flicks what the thimble ejection in the second cephacoria and line position, and rear cavity was molded by flexible glue after last pressurize shaping
Product, and taken out product by manipulator, so far complete the whole manufacturing process covered on Mobile terminal main board.
So, covered by double-color mold using on double color mould technological forming Mobile terminal main board, i.e. ebonite injection and flexible glue
Injection is completed all in same cover die, rather than will first be replanted after the shaping of ebonite semi-finished product in soft jelly mould, and this is improving shifting
While the production yield covered on dynamic terminal mainboard so that the cell rear cover of lid and mobile terminal coordinates on Mobile terminal main board
When, crush seal can be interfered by the side of flexible glue and cell rear cover, so that compatible horizontal waterproof；Additionally due to side is squeezed
Extrusion stress during pressure is smaller, and this avoids lid and cell rear cover relief on Mobile terminal main board, reduces the unstable of assembling
Property, and water resistance is improved, solve the problem of water resistance covered on Mobile terminal main board in the prior art is not good.
Covered in addition, the embodiment of the present invention is additionally provided on a kind of Mobile terminal main board, cover and pass through on the Mobile terminal main board
The preparation method covered on above-mentioned Mobile terminal main board is made.
Wherein, referring to Fig. 2, lid includes on the Mobile terminal main board：The side of face-piece body 1, the wherein surrounding of face-piece body 1
Ebonite 2 is coated with panel, and is coated with the outer surface of ebonite 2 flexible glue 3.
, can be by the side of flexible glue 3 and cell rear cover 4 when lid coordinates with cell rear cover 4 so on Mobile terminal main board
Interfere crush seal, compatible transverse direction waterproof in side；Additionally due to the extrusion stress during extruding of side is smaller, this avoids mobile terminal
Lid and cell rear cover relief, reduce the unstability of assembling on mainboard, and improve water resistance, solve prior art
The problem of water resistance covered on middle Mobile terminal main board is not good.
Specifically, the material of ebonite can be polyamide and the mixture of 50% glass fibre.In addition, the material of flexible glue can
Think TPUE rubber.
In addition, further, with continued reference to Fig. 2, the first side 21 of ebonite 2 is coated on the side of the surrounding of face-piece body 1
A step structure 23 caved inward is formed on panel, and in the second side 22 relative with first side 21 on ebonite 2.
Wherein step structure 23 includes cave inward the successively the first side wall to be formed, second sidewall and the 3rd side wall, its
The height A of middle the first side wall is at least 0.5mm, and the height sum B of second sidewall and the 3rd side wall is at least 1.3mm, and
Horizontal range C between three side walls and the first side wall is at least 0.5mm.
Specifically, the step structure 23 can be used for filling flexible glue 3.The height A of wherein the first side wall can be used as flexible glue
Sealing position, you can with since the lower end of the first side wall inject flexible glue；In addition the height sum B of second sidewall and the 3rd side wall
For the length fit dimension of flexible glue side, i.e., when being molded flexible glue, the injection length of flexible glue is at least 1.3mm；In addition, the 3rd side
Horizontal range C between wall and the first side wall is the fit dimension between flexible glue and cell rear cover 4.
In addition, further, with continued reference to Fig. 2, the first side of flexible glue 3 is coated on the outer of second sidewall and the 3rd side wall
Formed on surface, and in the second side relative with first side on flexible glue 3 it is one outwardly, for mobile terminal
The bulge-structure 31 of the clamping of cell rear cover 4.Specifically, the second side of flexible glue 3 and the first side wall flush, and bulge-structure 31
Outwardly height of projection D is at least 0.1mm, and the Breadth Maximum E of bulge-structure 31 is at least 0.3mm.So, it can make
When lid coordinates fixed with cell rear cover 4 on Mobile terminal main board, flexible glue 3 can play a part of waterproof sealing, and raised knot
Structure 31 can be connected in cell rear cover 4, so that lid and cell rear cover fix tightly solidity on Mobile terminal main board is added
Meanwhile, add waterproof seal.
So, by coating ebonite on the side panel of the surrounding of face-piece body, and coat on the outer surface of ebonite soft
Glue, when this is covered on Mobile terminal main board with cell rear cover cooperation, can be interfered by the side of flexible glue and cell rear cover and extruded
Sealing, compatible transverse direction waterproof；Additionally due to the extrusion stress during extruding of side is smaller, this avoid on Mobile terminal main board lid with
Cell rear cover relief, reduces the unstability of assembling, and improves water resistance, solves mobile terminal in the prior art
The problem of water resistance covered on mainboard is not good.
Above-described is the preferred embodiment of the present invention, it should be pointed out that come for the ordinary person of the art
Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (16)
1. the preparation method covered on a kind of Mobile terminal main board, it is characterised in that including：
Make the face-piece body of mobile terminal；
Ebonite injection is carried out to the face-piece body by double-color mold, ebonite is coated on to the side of the surrounding of the face-piece body
On panel；
Flexible glue injection is carried out to the face-piece body for being coated with the ebonite by the double-color mold, flexible glue is coated on described hard
On the outer surface of glue.
2. preparation method according to claim 1, it is characterised in that the material of the ebonite is polyamide and 50% glass
The mixture of fiber.
3. preparation method according to claim 1, it is characterised in that the material of the flexible glue is thermoplastic polyurethane elastic
Body rubber.
4. preparation method according to claim 1, it is characterised in that described to be entered by double-color mold to the face-piece body
Before the step of row ebonite is molded, in addition to：
Positioning hole is opened up on the face-piece body, wherein the positioning hole and the locating dowel in rear cavity in the double-color mold
Relatively；
The positioning hole is located in the locating dowel by manipulator, and by the suction nozzle of the double-color mold by the face
Shell body, which is inhaled, to be scheduled in the rear cavity.
5. preparation method according to claim 4, it is characterised in that unilateral between the positioning hole and the locating dowel
The scope in gap is 0.02mm to 0.03mm.
6. preparation method according to claim 1, it is characterised in that described to be entered by double-color mold to the face-piece body
The step of row ebonite is molded, including：
By mould before the first of the double-color mold, ebonite injection is carried out to the face-piece body, by the first side bag of ebonite
On the side panel for the surrounding for overlaying on the face-piece body, and the second side formation one relative with the first side on ebonite
The step structure caved inward.
7. preparation method according to claim 6, it is characterised in that the step structure includes the shape that caves inward successively
Into the first side wall, second sidewall and the 3rd side wall, wherein the height of the first side wall is at least 0.5mm, and described second
The height sum of side wall and the 3rd side wall be at least level between 1.3mm, and the 3rd side wall and the first side wall away from
From at least 0.5mm.
8. preparation method according to claim 7, it is characterised in that described described to being coated with by the double-color mold
The step of face-piece body of ebonite carries out flexible glue injection includes：
By mould before the second of the double-color mold, flexible glue injection is carried out to the face-piece body for being coated with the ebonite, will be described
The first side of flexible glue is coated on the outer surface of the second sidewall and the 3rd side wall, and on flexible glue with the first side
A bulge-structure outwardly, for the cell rear cover clamping with mobile terminal is formed in relative second side.
9. preparation method according to claim 8, it is characterised in that the second side of the flexible glue and the first side wall
Flush, and the outwardly height of projection of the bulge-structure is at least 0.1mm, and the bulge-structure Breadth Maximum extremely
It is 0.3mm less.
10. covered on a kind of Mobile terminal main board, it is characterised in that lid is using such as claim 1 to 9 on the Mobile terminal main board
Obtained by the preparation method covered on Mobile terminal main board described in any one；Lid includes on the Mobile terminal main board：
Face-piece body, wherein ebonite is coated with the side panel of the surrounding of the face-piece body, and in the outer surface of the ebonite
On be coated with flexible glue.
11. covered on Mobile terminal main board according to claim 10, it is characterised in that the first side cladding of the ebonite
One is formed on the side panel of the surrounding of the face-piece body, and in the second side relative with the first side on ebonite
The step structure caved inward.
12. covered on Mobile terminal main board according to claim 11, it is characterised in that the step structure is included successively
Cave inward the first side wall to be formed, second sidewall and the 3rd side wall, wherein the height of the first side wall is at least 0.5mm,
And the second sidewall and the height sum of the 3rd side wall are at least 1.3mm, and the 3rd side wall and the first side wall it
Between horizontal range be at least 0.5mm.
13. covered on Mobile terminal main board according to claim 12, it is characterised in that the first side cladding of the flexible glue
On the outer surface of the second sidewall and the 3rd side wall, and shape in the second side relative with the first side on flexible glue
Into a bulge-structure outwardly, for the cell rear cover clamping with mobile terminal.
14. covered on Mobile terminal main board according to claim 13, it is characterised in that the second side of the flexible glue and institute
State the first side wall flush, and the outwardly height of projection of the bulge-structure is at least 0.1mm, and the bulge-structure
Breadth Maximum is at least 0.3mm.
15. covered on Mobile terminal main board according to claim 10, it is characterised in that the material of the ebonite is polyamide
With the mixture of 50% glass fibre.
16. covered on Mobile terminal main board according to claim 10, it is characterised in that the material of the flexible glue is thermoplasticity
Elastic polyurethane body rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625121.9A CN107322873A (en) | 2017-07-27 | 2017-07-27 | Lid and preparation method on a kind of Mobile terminal main board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625121.9A CN107322873A (en) | 2017-07-27 | 2017-07-27 | Lid and preparation method on a kind of Mobile terminal main board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107322873A true CN107322873A (en) | 2017-11-07 |
Family
ID=60200141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625121.9A Pending CN107322873A (en) | 2017-07-27 | 2017-07-27 | Lid and preparation method on a kind of Mobile terminal main board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107322873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474562A (en) * | 2020-10-27 | 2022-05-13 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
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| CN104999619A (en) * | 2015-07-31 | 2015-10-28 | 锦丰科技（深圳）有限公司 | Bi-color mold injection molding glue sealing structure and operation method thereof |
| CN105711035A (en) * | 2016-04-05 | 2016-06-29 | 东莞劲胜精密组件股份有限公司 | Double-color molding product and method |
| CN106514968A (en) * | 2016-12-30 | 2017-03-22 | 浙江工商职业技术学院 | Design of double-color injection mold of automobile interior trim strips |
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| CN103660136A (en) * | 2012-09-07 | 2014-03-26 | 汉达精密电子(昆山)有限公司 | Bicolor rubber frame-glass combination casing and manufacturing method thereof |
| CN104626470A (en) * | 2015-02-11 | 2015-05-20 | 宁波双林模具有限公司 | Two-color mold with inner rotating core |
| CN104999619A (en) * | 2015-07-31 | 2015-10-28 | 锦丰科技（深圳）有限公司 | Bi-color mold injection molding glue sealing structure and operation method thereof |
| CN105711035A (en) * | 2016-04-05 | 2016-06-29 | 东莞劲胜精密组件股份有限公司 | Double-color molding product and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114474562A (en) * | 2020-10-27 | 2022-05-13 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
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