CN109352912A - Injection mold and injection molding forming method - Google Patents
Injection mold and injection molding forming method Download PDFInfo
- Publication number
- CN109352912A CN109352912A CN201811235407.7A CN201811235407A CN109352912A CN 109352912 A CN109352912 A CN 109352912A CN 201811235407 A CN201811235407 A CN 201811235407A CN 109352912 A CN109352912 A CN 109352912A
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- CN
- China
- Prior art keywords
- boss
- injection mold
- metalwork
- injection
- cavity
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- 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.)
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/14065—Positioning or centering articles in the mould
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of injection mold, is used for plastic parts in conjunction with metalwork.The injection mold includes male model and master mold, and the male model and the master mold surround injection mold cavity, and the cavity wall of the injection mold cavity is equipped with boss, and the boss is used to support the metalwork, and supports with the surface periphery of the metalwork towards the cavity wall.The application is by being arranged boss in the cavity wall of injection mold cavity in the injection mold, when metalwork carries out injection molding, the boss, which is pressed into the metalwork, is pressed on the metalwork in the cavity wall of the injection mold cavity, it will not enter between metalwork and the surface during the extremely strong melt plastic cement of mobility is injected into the injection mold cavity, reduce phenomena such as generating excessive glue or burr, also there is no need to carry out excessive repair to the male model and master mold after the completion of injection molding, finished product rate can be effectively improved, production efficiency is improved.
Description
Technical field
The present invention relates to injection molding field, in particular to a kind of injection mold and injection molding forming method.
Background technique
With economic rapid development, mobile phone is increasingly popularized, and becomes indispensable communication tool in people's daily life.
Mobile phone shell material includes the shells material such as face-piece, middle shell, battery cover, can be all molded using metalwork in Mo Nei and plastic parts as face-piece
Mode formed.Due to handset structure design limitation, metal, which matches to close with plastic rubber mold structure, can be related to many plane envelopes
Glue and it is inserted through sealing, generally all cooperates again with plastic mould after the completion of metalwork is individually molded embryo material and be molded, and then completed whole
The injection molding of a face-piece.
Common metal part will can just eventually become single finished product, metalwork and plastic cement by multiple processes after injection molding
All there is certain dimensional tolerances for mode part, when completing to be molded after metalwork is put into plastic mold manually or automatically,
Due to the cumulative limit of metalwork and plastic cement mode, sealing position is difficult to be bonded completely, causes the product being molded by that can exist
The problems such as excessive glue, burr.
Summary of the invention
The purpose of the present invention is to provide a kind of injection molds, reduce the product yield of injection molding, reduce excessive glue, burr
The problems such as.
The present invention also provides a kind of injection molding forming methods.
Injection mold of the present invention is used for by plastic parts in conjunction with metalwork, including the male model and master mold being oppositely arranged,
The male model and the master mold surround injection mold cavity, and the cavity wall of the injection mold cavity is equipped with boss, described in the boss support
Metalwork, and supported with the surface periphery of the metalwork towards the cavity wall.
Wherein, the cross section of the boss is arc-shaped.
Wherein, the distance between circumferential surface of the boss and the metalwork is between 0.5mm~1.0mm.
Wherein, the width of the boss is between 0.8mm~1mm.
Wherein, the height of the boss is between 0.03mm~0.05mm.
Wherein, the boss includes multiple sub- boss, and multiple sub- boss surround closed bulge loop, the bulge loop and institute
The circumferential surface for stating metalwork is parallel.
Wherein, the boss includes multiple sub- boss, multiple sub- boss interval settings.
Wherein, the boss and the male model or the master mold are integrally formed.
Injection molding forming method of the present invention includes:
There is provided an injection mold, wherein the above-mentioned injection mold of injection mold；
Metalwork is put into the injection mold cavity of the injection mold, wherein the surface periphery of the metalwork with it is described
Boss in injection mold cavity cavity wall supports；
The plastic material of molten condition is injected in the injection mold cavity, the plastic cement for wrapping up the metalwork circumferential surface is obtained
Part.
Wherein, the cross section of the boss is arc-shaped.
Boss is arranged in the cavity wall of injection mold cavity in injection mold of the present invention, when metalwork carries out injection molding,
The boss, which is pressed into the metalwork, is pressed on the metalwork in the cavity wall of the injection mold cavity, when mobility pole
Strong melt plastic cement is may not flow into during being injected into the injection mold cavity between metalwork and the surface, is reduced to generate and be overflow
Phenomena such as glue or burr, also there is no need to carry out excessive repair to the male model and master mold after the completion of injection molding, effectively
Finished product rate is improved, production efficiency is improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of injection mold of the present invention
Fig. 2 is the enlarged structure schematic diagram of region A in injection mold described in Fig. 1.
Fig. 3 is the overlooking structure diagram of master mold in injection mold described in Fig. 1.
Fig. 4 is the flow diagram of injection molding forming method of the present invention.
Fig. 5 is the planar structure schematic diagram of preset mobile telephone surface shell.
Fig. 6 is the schematic diagram of the section structure after the completion of the injection molding of injection molding forming method described in Fig. 4.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, better embodiment of the present invention provides a kind of injection mold 100, is mainly used for passing through injection molding
Molding is combined plastic parts with metalwork 200.The basic principle of the metalwork injection molding is that metalwork is fixed on mold in advance
Middle appropriate location, plastic material, which is heated to fusing point or more, makes its fusing, and makes in the plastic cement injection mold of melting, wait melt modeling
Glue is cooling and the metalwork cured plastic cement that is cooled is packed tightly and is embedded in product after solidifying, and has just obtained the modeling of predetermined shape and size
Glue product.
The injection mold 100 includes the male model 10 and master mold 20 being oppositely arranged.The male model 10 and the master mold 20 enclose
At injection mold cavity 101, the cavity wall of the injection mold cavity 101 is equipped with boss 30, and the metalwork 200 is made in the boss 30,
And it is supported with the surface periphery of metalwork 200 towards the cavity wall.It should be noted that not to described convex in the application
The concrete shape of platform 30 is limited, such as the boss 30 can be dotted boss or linear boss.
Boss 30 is arranged in injection mold 100 of the present invention in the cavity wall of injection mold cavity 101, carries out in metalwork 200
When injection molding, the boss 30, which is pressed into the metalwork 200, makes the metalwork 200 be pressed on the injection mold cavity
In 101 cavity wall, metalwork will not be entered during the extremely strong melt plastic cement of mobility is injected into the injection mold cavity 101
Between 200 and the surface 201, reduces plastic cement products and the problems such as excessive glue or burr occur, also there is no need to after the completion of injection molding
Excessive repair is carried out to the position for generating excessive glue or burr in the male model 10 and the master mold 20, effectively improves product
Yield rate improves production efficiency.
In the present embodiment, the male model 10 is punch-pin, and the master mold 20 is cavity plate, the male model 10 and 20 phase of master mold
Cooperatively form the injection die cavities 101.Specifically, the boss 30 is set to the master mold 20 towards the surface of the male model 10
On 201, and the boss 30 and the master mold 20 are integrally formed, and can not only be guaranteed between the boss 30 and the master mold 20
Connective stability, prevent the boss 30 from falling off from the master mold 20, it can also be ensured that the boss 30 and the master mold
The leakproofness of 20 junctions prevents the plastic cement melted in injection moulding process from flowing into the junction of the boss 30 and the master mold 20.
The cross section of the boss 30 is that arc-shaped, arc-shaped boss 30 has preferable intensity, in the male model 10 and the mother
In 20 clamping process of mould, the metalwork 200 most starts to be that line is contacted with the boss 30, it is easier to by the metalwork
200 are pressed on the surface 201 of the master mold 20.Further, the width of the boss 30 is between 0.8mm~1mm, height
Between 0.03mm~0.05mm, when guaranteeing that the metalwork 200 is pressed on the surface 201, the boss 30 will not
Biggish impression is left on the metalwork 200.It is described convex in the other embodiments of herein described injection mold 100
Platform 30 also can be set on the surface of male model 10, and be integrally formed with the male model 10.It should be noted that the boss 30 can
With according to actual needs come be alternatively provided on the male model 10 or the master mold 20 with prevent excessive glue phenomenon generate.
The distance between circumferential surface of the boss 30 and the metalwork 200 is between 0.5mm~1.0mm.Wherein, described
The circumferential surface of metalwork 200 is the face that metalwork 200 is contacted with plastic material described in injection molding process, referred to as sealing face.
The boss 30 is set in the position with a distance from the sealing face 0.5mm~1.0mm, makes the metalwork 200 and the boss
30 compress fitting to guarantee that the metalwork 200 is pressed on the surface 201 of the master mold 20, guarantee the plastic cement in injection moulding process
The generation for the problems such as melt may not flow between the metalwork 200 and the surface 201, avoid excessive glue or burr.
Referring to Fig. 3, the boss 30 includes multiple sub- boss 31, and each sub- boss 31 is along institute in the present embodiment
The circumferentially extending of metalwork 200 is stated, is flowed between the metalwork 200 and the surface 201 to avoid the plastic cement of flowing.It needs
Illustrate, the specific location of multiple sub- boss 31 can be set to the position for being easy to happen excessive glue or burr according to actual needs
It sets.Specifically, multiple sub- boss 31 surround closed bulge loop, the bulge loop is parallel with the circumferential surface of the metalwork 200.It needs
It is noted that in the other embodiments of herein described injection mold 100, the multiple sub- interval of boss 31 settings, often
The position of the one sub- boss 31 can be adaptively adjusted according to actual needs.
Referring to Fig. 4, the application also provides a kind of injection molding forming method, metalwork is carried out using above-mentioned injection mold 100
Injection molding.Next, the application will be prepared for mobile telephone surface shell 300 using above-mentioned injection mold 100 to the injection molding
Method is specifically described.
Step S1 provides an injection mold.Wherein, the injection mold is above-mentioned injection mold 100.
Specifically, first presetting the specific structure and size of the mobile telephone surface shell 300, such as before preparing mobile telephone surface shell 300
Shown in Fig. 5.The mobile telephone surface shell 300 includes steel disc 310 and the plastic structure part 320 for covering 310 circumferential surface of steel disc.Wherein,
The steel disc 310 be subsequent injection molding process in metalwork 200, along the steel disc 310 circumferentially extend and with the steel
The similar cabling 330 of 310 shape of piece is 30 cabling of boss designed.
Metalwork 200 is put into the injection mold cavity 101 of the injection mold 100 by step S2.Specifically, by steel disc 310
It is put into injection mold cavity 101, and the surface periphery of steel disc 310 is supported with the boss 30 in the cavity wall of the injection mold cavity 101.Institute
The surface that boss 30 is pressed into the steel disc 310 is stated, so that the surface of the steel disc 310 is fitted closely with the cavity wall 201.
The plastic material of molten condition is injected in the injection mold cavity 101, obtains wrapping up the metalwork by step S3
The plastic parts 40 of 200 circumferential surfaces.Specifically, due to the steel disc 310 and 30 compression fit of boss, injection moulding process in this step
The plastic cement of middle melting is all blocked on other than the circumferential surface of the steel disc 310, is formed after cooling and solidifying and is wrapped in the steel disc 310
The plastic parts 40 of circumferential surface, as shown in Figure 6.
It should be noted that the method for preparing the mobile telephone surface shell 300 further includes demoulding, CNC processing and surface treatment
Etc. techniques, since these steps are not related to inventive point of the invention, no further details to be given herein,
Injection mold 100 of the present invention utilizes the space of injection mold itself, under the premise of not changing product structure,
Boss 30 is set in the cavity wall of the injection mold cavity 101, makes institute to precompressed sealing is done between metalwork 200 and the boss 30
It states metalwork 200 to be pressed in the cavity wall of the injection mold cavity 101, in injection moulding process, the extremely strong plastic cement melt of mobility is not
It can flow between the metalwork 200 and the cavity wall, avoid the appearance of excessive glue or burr problem, solve to injection mold
It carries out repeating to repair brought cost and time, it is automatic to ensure that product can be realized steadily in the long term in injection molding production process
Metaplasia produces, and the benefit of product greatly promotes.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and wants according to right of the present invention
Made equivalent variations is sought, is still belonged to the scope covered by the invention.
Claims (10)
1. a kind of injection mold is used for plastic parts in conjunction with metalwork, which is characterized in that including male model and master mold, the public affairs
Mould and the master mold surround injection mold cavity, and the cavity wall of the injection mold cavity is equipped with boss, and the boss is used to support the gold
Belong to part, and is supported with the surface periphery of the metalwork towards the cavity wall.
2. injection mold as described in claim 1, which is characterized in that the cross section of the boss is arc-shaped.
3. injection mold as described in claim 1, which is characterized in that between the boss and the circumferential surface of the metalwork away from
From between 0.5mm~1.0mm.
4. injection mold as described in claim 1, which is characterized in that the width of the boss is between 0.8mm~1mm.
5. injection mold as claimed in claim 4, which is characterized in that the height of the boss 0.03mm~0.05mm it
Between.
6. injection mold as described in claim 1, which is characterized in that the boss includes multiple sub- boss, multiple sons
Boss surrounds closed bulge loop, and the bulge loop is parallel with the circumferential surface of the metalwork.
7. injection mold as described in claim 1, which is characterized in that the boss includes multiple sub- boss, multiple sons
The setting of boss interval.
8. injection mold as described in any one of claims 1 to 7, which is characterized in that the boss and the male model are described
Master mold is integrally formed.
9. a kind of injection molding forming method characterized by comprising
There is provided an injection mold, wherein the injection mold is injection mold according to any one of claims 1 to 8；
Metalwork is put into the injection mold cavity of the injection mold, wherein the surface periphery of the metalwork and the injection molding
Boss in die cavity cavity wall supports；
The plastic material of molten condition is injected in the injection mold cavity, the plastic parts for wrapping up the metalwork circumferential surface is obtained.
10. injection molding forming method as claimed in claim 9, which is characterized in that the cross section of the boss is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811235407.7A CN109352912A (en) | 2018-10-23 | 2018-10-23 | Injection mold and injection molding forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811235407.7A CN109352912A (en) | 2018-10-23 | 2018-10-23 | Injection mold and injection molding forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109352912A true CN109352912A (en) | 2019-02-19 |
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ID=65346208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811235407.7A Pending CN109352912A (en) | 2018-10-23 | 2018-10-23 | Injection mold and injection molding forming method |
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| Country | Link |
|---|---|
| CN (1) | CN109352912A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206527983U (en) * | 2017-01-13 | 2017-09-29 | 广东龙昕科技有限公司 | A kind of glue sealing structure of mould |
-
2018
- 2018-10-23 CN CN201811235407.7A patent/CN109352912A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206527983U (en) * | 2017-01-13 | 2017-09-29 | 广东龙昕科技有限公司 | A kind of glue sealing structure of mould |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190219 |
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| RJ01 | Rejection of invention patent application after publication |