CN106273277B - Plastic mould and the method being molded using plastic mould - Google Patents
Plastic mould and the method being molded using plastic mould Download PDFInfo
- Publication number
- CN106273277B CN106273277B CN201610790171.8A CN201610790171A CN106273277B CN 106273277 B CN106273277 B CN 106273277B CN 201610790171 A CN201610790171 A CN 201610790171A CN 106273277 B CN106273277 B CN 106273277B
- Authority
- CN
- China
- Prior art keywords
- cast gate
- frustum
- injection molding
- cone
- plastic mould
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 52
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920000034 Plastomer Polymers 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Telephone Set Structure (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
This application involves mobile electrical equipment accessory production field more particularly to plastic mould and the methods being molded using plastic mould.Plastic mould includes：The frustum of a cone groove of indent is arranged at the cast gate of dynamic model for the dynamic model and cover half being used cooperatively, and cast gate is arranged in the slot bottom of frustum of a cone groove, and is connected to cast gate.Injection moulding process includes：The cast gate of dynamic model is connect with injection molding machine；Start dynamic model and injection molding machine is molded, obtains injection molding body；The cast gate of injection molding body is cut off；By the frustum of a cone removal of the injection molding body after excision cast gate, cleaning, drying obtains injection-molded finished.Frustum of a cone groove is arranged in the present invention at the cast gate of dynamic model, after injection molding, injection molding body itself forms the frustum of a cone at cast gate, to increase the intensity of ontology glue thickness, with the increasing of ontology glue thickness, gate thickness can also be increased suitably, met cast gate and filled entire injection molding body enough into the amount of pouring, while the gate location intensity of injection molding body ontology is sufficiently strong and be unlikely to be drawn by the resistance of cast gate recessed.
Description
Technical field
It is carried out this application involves mobile electrical equipment accessory production field more particularly to plastic mould and using plastic mould
The method of injection molding is mainly used in the production of mobile phone battery cover.
Background technology
Mobile phone battery cover thickness on the market is substantially in 1.0mm or so at present, and such thickness is for mold injection molding
For there is no too big difficulty.But chase the mobile phone light-weighted age at this, what mobile phone shells was done thinner has become
A kind of fashion trend.Now many battery cover thickness has even accomplished 0.6mm sizes below.However so weak thickness
Also it gives subsequent injection molding production to bring prodigious problem, shrinks as product is molded imperfect, product, cast gate draws the problems such as recessed very
It is more.And most common is exactly that cast gate draws recessed problem.Conventional solution has 2 kinds now：The first, makees cast gate thin, profit
It is produced with high rate of fire injection moulding machine.Disadvantage is that high rate of fire molding machine price is more much higher than common molding machine, and production cost is without excellent
Gesture；High rate of fire can cause product some unexpected problems occur, such as cause product to thicken, burr is walked in the faces product PL.Second
Kind, cast gate is done it is thin, by adjustment injection moulding machine parameter, as possible by dent trace do it is light do it is shallow, then with post-processing (as spray
Apply, lose line etc.) cover.The disadvantage is that method is palliative, does not solve the problems, such as that drawing is recessed from basic, hidden simply by other methods
It covers.Once it is required that dent is still visible if plastic cement products material shipment (without any post-processing).
Invention content
A kind of method being molded this application provides plastic mould and using plastic mould, can improve superthin plastic
Ontology resist cast gate ejection resistance, avoid the occurrence of draw concave as.
This application provides a kind of plastic moulds comprising：The dynamic model and cover half being used cooperatively, at the cast gate of the dynamic model
The frustum of a cone groove of indent is set, and cast gate is arranged in the slot bottom of the frustum of a cone groove, and is connected to the cast gate.
In some embodiments, preferably, the base diameter of the frustum of a cone groove is less than notch diameter.
In some embodiments, preferably, the base diameter of the frustum of a cone groove is more than the width of the cast gate.
In some embodiments, preferably, the cell wall thickness of the frustum of a cone groove is more than the thickness of the cast gate.
In some embodiments, preferably, the cast gate is tedge.
In some embodiments, preferably, the thickness of the plastic mould injecting products is less than or equal to 0.6 millimeter.
In some embodiments, preferably, the injecting products include：Mobile phone battery cover, phone cover.
The present invention also provides a kind of methods being molded using above-mentioned plastic mould comprising：
The cast gate of dynamic model is connect by Connection Step with injection molding machine；
Injection step, starts dynamic model and injection molding machine is molded, and obtains injection molding body；
Excision step cuts off the cast gate of injection molding body；
Removal step removes the frustum of a cone of the injection molding body after excision cast gate, and cleaning, drying obtains injection-molded finished.
In some embodiments, preferably, in the excision step, cast gate excision is carried out using water dividing gap cutter.
In some embodiments, preferably, in the removal step, frustum of a cone removal is carried out using numerically-controlled machine tool.
In some embodiments, preferably, the injection-molded finished thickness is less than or equal to 0.6 millimeter.
In some embodiments, preferably, the frustum of a cone groove of indent, the frustum of a cone are set at the cast gate of the dynamic model
Cast gate is arranged in the slot bottom of groove, and is connected to the cast gate.
In some embodiments, preferably, described injection-molded finished to include：Mobile phone battery cover, phone cover.
Technical solution provided by the present application can reach following advantageous effect：
Frustum of a cone groove is arranged in scheme provided herein at the cast gate of dynamic model, and after injection molding, injection molding body itself is pouring
The frustum of a cone is formed at mouthful, to increase the intensity of ontology glue thickness, with the increasing of ontology glue thickness, gate thickness can also suitably add
Greatly, meet cast gate and fill entire injection molding body enough into the amount of pouring, at the same injection molding body ontology gate location intensity it is sufficiently strong without
It is recessed as being drawn by the resistance of cast gate.
It should be understood that above general description and following detailed description is merely exemplary, this can not be limited
Application.
Description of the drawings
Fig. 1 is the structural schematic diagram of the mobile phone battery cover produced by plastic mould in the application one embodiment；
Fig. 2 is the hand containing cast gate and the frustum of a cone obtained after being molded using plastic mould in the application one embodiment
The structural schematic diagram of machine battery lid injection molding body；
Fig. 3 is the schematic diagram that cast gate is cut off in the application one embodiment；
Fig. 4 is the schematic diagram that the frustum of a cone is removed in the application one embodiment；
Fig. 5 is the method schematic diagram being molded using plastic mould in the application one embodiment.
Reference numeral：
1, cast gate；
2, the frustum of a cone；
3, water dividing gap cutter；
4, numerically-controlled machine tool.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Specific implementation mode
It is described in further detail below by specific embodiment and in conjunction with attached drawing to the application.It is described in text
"front", "rear", "left", "right", "upper", "lower" are using the placement status of the plastic mould in attached drawing as reference.
When injection molding body in view of producing relatively thin (thickness be less than or equal to 0.6 millimeter), demoulded between injection molding body and cast gate
It is recessed to be susceptible to drawing, present embodiments provides a kind of plastic mould, injection molding body is produced using the plastic mould, is improved well
Draw concave as.
The plastic mould includes：The frustum of a cone groove of indent is arranged at the cast gate of dynamic model for the dynamic model and cover half being used cooperatively,
Cast gate is arranged in the slot bottom of frustum of a cone groove, and is connected to cast gate.
Frustum of a cone groove is set at the cast gate of dynamic model, and after injection molding, injection molding body itself forms the frustum of a cone at cast gate, to increase
The intensity for adding ontology glue thickness, with the increasing of ontology glue thickness, gate thickness can also be increased suitably, meet cast gate into the amount of pouring foot
Enough fill entire injection molding body, while the gate location intensity of injection molding body ontology is sufficiently strong and be unlikely to be drawn by the resistance of cast gate recessed.
The program is described in detail followed by some embodiments.It is described in order to more convenient, to produce mobile phone electricity
It is described for the lid of pond, the mobile phone battery cover thinner thickness of production, is less than or equal to 0.6 millimeter, as shown in Figure 1.
Under conventional thinking, common battery cover is averaged glue thickness generally between 0.8--1.2mm, the cast gate of plastic mould
Thickness (T1 ≈ 0.8T) generally between 0.7--1.0mm.If the too thin product that just will appear of gate thickness causes into glue amount deficiency
The filling of product starved is discontented；Cast gate, which is not easy to separate with product, if gate thickness is too thick may result in battery cover cast gate and draws high.
Slimline battery lid (≤0.6mm) is produced in currently available technology cast gate occur recessed basic reason is drawn to be its injection molding
The average glue thickness too weak (average glue thickness is generally in 0.6mm or less) of body ontology can not bear cast gate to its ejection resistance.If
Runner section setting too thin product at all can not mould filling it is complete；If too thick ejection resistance will be by this weak 0.6mm glue
Draw concave change shape in position.
For this purpose, inventor improves plastic mould, the slot of indent is set in the cast gate position of dynamic model, the shape of slot is
Cast gate is arranged on the bottom of the frustum of a cone in the frustum of a cone, and cast gate is connected to frustum of a cone groove.So operation, can be obtained cast gate after injection molding
The more injection molding bodies of the frustum of a cone in position, the frustum of a cone increases the thickness at injection molding body cast gate position as a result, and then it is de- to enhance cast gate
The resistance of mould.In addition the thickness of cast gate need not be too thin, avoids occurring into the inadequate situation of glue amount.
The contact area of the frustum of a cone and mobile phone battery cover injection molding body ontology in order to further increase is noted close to mobile phone battery cover
One end of plastomer ontology is the notch of frustum of a cone groove, and the diameter of notch is more than the diameter of slot bottom.
Meanwhile cast gate is set on slot bottom, the base diameter of frustum of a cone groove is more than the width of cast gate.Frustum of a cone groove
Cell wall thickness is more than the thickness of cast gate.
Injection operation based on mobile phone battery cover, plastic mould is equipped with 6 frustum of a cone grooves, Mei Geyuan in the present embodiment
One tedge is set on frustum.
It should be noted that using the plastic mould to produce mobile phone battery cover in the present embodiment, as shown in Fig. 2, mobile phone
6 frustums of a cone 2 are set on battery cover ontology, have cast gate 1, those skilled in the art that can use the modeling as needed on the frustum of a cone
Sealing rubber die produces relatively thin injecting products, such as：All kinds of battery covers, phone cover etc..It is not listed one by one herein.
With reference to above-mentioned plastic mould, the method being molded using the plastic mould is provided, as shown in figure 5, its
Including：
Step 110, the cast gate of dynamic model is connect with injection molding machine；
The frustum of a cone groove of indent is set at the cast gate of the dynamic model, and cast gate, and and cast gate is arranged in the slot bottom of frustum of a cone groove
Connection.
Step 210, start dynamic model and injection molding machine is molded, obtain injection molding body；
Dynamic model close to cover half, injection molding machine by cast gate into the space between dynamic model and cover half into glue, obtain injection molding body, should
Injection molding body (mobile phone battery cover injection molding body) also carries the frustum of a cone and cast gate.
Step 310, the cast gate of injection molding body is cut off；
The excision of mobile phone battery cover injection molding body cast gate is carried out using lathe and the excision of water dividing gap cutter 3, Fig. 3 shows excision
Figure.
Step 410, the frustum of a cone of the injection molding body after excision cast gate is removed；
Further 6 frustums of a cone are removed using numerically-controlled machine tool 4, the thickness of frustum of a cone position is made to meet battery of mobile phone
The thickness requirement (being less than or equal to 0.6 millimeter) of lid, such as 0.6 millimeter or 0.5 millimeter etc..Fig. 4 shows frustum of a cone removal figure.
Step 510, cleaning, drying obtains injection-molded finished.
It can be obtained cast gate after cleaning, drying and do not draw recessed slimline battery lid non-defective unit.
In short, can to solve the problems, such as that slimline battery lid cast gate is drawn recessed by the present invention, and method is simple, and simple structure is easy to
Operation is with reproducibility, generalization.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of plastic mould, which is characterized in that including：The dynamic model and cover half being used cooperatively are arranged at the cast gate of the dynamic model
Cast gate is arranged in the edge of the frustum of a cone groove of indent, the slot bottom of the frustum of a cone groove, and is connected to the cast gate；The cast gate
Area close to the end face of the slot bottom of the frustum of a cone groove is much smaller than the area of the slot bottom of the frustum of a cone groove；The cast gate
Side include the both ends of a smooth cambered surface and one for connecting the cambered surface plane, the cambered surface is perpendicular to the circle
The slot bottom of frustum groove, the plane are increasingly towards the direction far from the cambered surface from the slot bottom and tilt.
2. plastic mould as described in claim 1, which is characterized in that it is straight that the base diameter of the frustum of a cone groove is less than notch
Diameter.
3. plastic mould as described in claim 1, which is characterized in that the base diameter of the frustum of a cone groove is more than described pour
The width of mouth.
4. plastic mould as described in claim 1, which is characterized in that the cell wall thickness of the frustum of a cone groove is more than described pour
The thickness of mouth.
5. plastic mould as described in claim 1, which is characterized in that the cast gate is tedge.
6. plastic mould as described in any one in claim 1-5, which is characterized in that the thickness of the plastic mould injecting products
Less than or equal to 0.6 millimeter.
7. plastic mould as claimed in claim 6, which is characterized in that the injecting products include：Mobile phone battery cover, mobile phone
Lid.
8. a kind of method being molded using any one of claim 1-7 plastic moulds, which is characterized in that including：
The cast gate of dynamic model is connect by Connection Step with injection molding machine；
Injection step, starts dynamic model and injection molding machine is molded, and obtains injection molding body；
Excision step cuts off the cast gate of injection molding body；
Removal step removes the frustum of a cone of the injection molding body after excision cast gate, and cleaning, drying obtains injection-molded finished.
9. method as claimed in claim 8, which is characterized in that
In the excision step, cast gate excision is carried out using water dividing gap cutter；And/or
In the removal step, frustum of a cone removal is carried out using numerically-controlled machine tool；And/or
The injection-molded finished thickness is less than or equal to 0.6 millimeter.
10. method as claimed in claim 8 or 9, which is characterized in that the frustum of a cone that indent is arranged at the cast gate of the dynamic model is recessed
Cast gate is arranged in the slot bottom of slot, the frustum of a cone groove, and is connected to the cast gate；And/or described injection-molded finished include：Mobile phone
Battery cover, phone cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790171.8A CN106273277B (en) | 2016-08-31 | 2016-08-31 | Plastic mould and the method being molded using plastic mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790171.8A CN106273277B (en) | 2016-08-31 | 2016-08-31 | Plastic mould and the method being molded using plastic mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106273277A CN106273277A (en) | 2017-01-04 |
| CN106273277B true CN106273277B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610790171.8A Expired - Fee Related CN106273277B (en) | 2016-08-31 | 2016-08-31 | Plastic mould and the method being molded using plastic mould |
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| CN (1) | CN106273277B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039725A (en) * | 2019-05-23 | 2019-07-23 | 广东格林精密部件股份有限公司 | A kind of ultra-thin 5G mobile phone battery cover and its manufacturing process |
| CN110126210B (en) * | 2019-05-30 | 2024-06-21 | 开平市盈光机电科技有限公司 | Mobile phone shell blank |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848518A (en) * | 2012-09-18 | 2013-01-02 | 福建省石狮市通达电器有限公司 | Injection molding production technique of IML (In Mold Labelling) ultrathin workpieces |
| CN205439091U (en) * | 2016-01-05 | 2016-08-10 | 深圳市美格智能技术股份有限公司 | Exempt from glued structure of advancing of type of spouting line face battery cover single -point formula |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5453167A (en) * | 1977-10-06 | 1979-04-26 | Teijin Ltd | Production of polyester injection molded product and device therefor |
-
2016
- 2016-08-31 CN CN201610790171.8A patent/CN106273277B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848518A (en) * | 2012-09-18 | 2013-01-02 | 福建省石狮市通达电器有限公司 | Injection molding production technique of IML (In Mold Labelling) ultrathin workpieces |
| CN205439091U (en) * | 2016-01-05 | 2016-08-10 | 深圳市美格智能技术股份有限公司 | Exempt from glued structure of advancing of type of spouting line face battery cover single -point formula |
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| Publication number | Publication date |
|---|---|
| CN106273277A (en) | 2017-01-04 |
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