CN102441966A - Mould structure for controlling warping of plastic injection product and product thereof - Google Patents
Mould structure for controlling warping of plastic injection product and product thereof Download PDFInfo
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- CN102441966A CN102441966A CN2010105051872A CN201010505187A CN102441966A CN 102441966 A CN102441966 A CN 102441966A CN 2010105051872 A CN2010105051872 A CN 2010105051872A CN 201010505187 A CN201010505187 A CN 201010505187A CN 102441966 A CN102441966 A CN 102441966A
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Abstract
The invention discloses a mould structure for controlling warping of a plastic injection product and a product thereof. The mould structure consists of a first half mould and a second half mould, wherein the first half mould and the second half mould are correspondingly provided with a first mould cavity and a second mould cavity; one side of the first mould cavity or the second mould cavity corresponding to one of the first half mould and the second half mould is provided with at least one abruptly changing thickness structure; and the manufactured plastic injection product is correspondingly provided with an abruptly changing thickness part. Thereby, flow and cooling modes can be changed through the abruptly changing thickness part; continuous shrinkage is interrupted locally; and the warping problem produced by mould temperature difference and a product structure is controlled by changing warping direction and warpage.
Description
Technical field
The present invention relates to a kind of technical field of plastics ejection formation, relate in particular to a kind of mould structure and the goods thereof that can control the warpage issues that is caused because of mould temperature difference XOR product structure.
Background technology
Because characteristic such as light weight and the moulding free degree be wide, the ejection formation product has been widely used in many fields, for example computer industry, telecommunications, steam turbine car, connector, high precision product or the like in recent years.Penetrate in the goods manufacture process at plastics, warpage is common defect problem.
Plastics penetrate goods in the process of moulding; The temperature of male and female mould can be because the water route design; And cause the mould temperature uneven, especially as far as flat ejection formation goods, the temperature contrast of male and female mould can cause plastics to penetrate the problem of goods warpage in process of production.
See also Fig. 1, it penetrates the different sketch map that causes the product warpage of the goods two side form temperature difference for plastics.(a) part shows that the mold temperature when the upper and lower both sides of plastics ejaculation goods 80a is under the state of uniform temp (50 ℃) in Fig. 1; Plastics can not deform after penetrating goods 80a cooling; And (b) part shows among Fig. 1; Under the mold temperature of the upper and lower both sides of plastics ejaculation goods 80b state inequality, plastics penetrate the problem that buckling deformation then can take place after goods 80b cools off.
For overcome on business, the warpage issues that temperature contrast caused of master mold; Common way is to improve the cooling system of male and female mould; For example: see through the design and the temperature control of cooling water channel; Avoid the male and female mould in cooling procedure, to produce the temperature difference, purpose is to eliminate the problem that plastics that the temperature difference brings penetrate the goods warpage thus.
But,, make the design of cooling water channel receive many restrictions because product design makes mould structure that different mechanisms such as taper pin, thimble must be set.
Ejecting forming decoration in mould (In-Mold Decoration; IMD) processing procedure be a kind of be on film surface, to impose printing, hot-forming, die-cut; The processing procedure of last and plastic tie synthesis type; It can exempt secondary operation program and manpower man-hour thereof; The plastics of its manufacturing penetrate the plastic product that goods can satisfy 3C, household electrical appliances, LOGO inscription plate and auto parts, light, thin, short and small goods such as particularly at present popular phone housing and various instrument face plate.
But molten plastic and film contact side can produce long-pending heat in the IMD processing procedure; Make and be easy to generate the temperature difference between the male and female mould; If use traditional cooling water channel design and temperature controlled method to solve the problem that plastics penetrate the goods warpage; After mold temperature is drawn high, may make mould structure generation problem.
Can know that to sum up the mould temperature difference between the male and female mould is different with product structure difference etc., all possibly cause plastics to penetrate the problem of goods warpage.Therefore, plastics penetrate the warpage issues of goods or IMD goods as how lower cost, easier processing procedure solve, just become major subjects of the present invention.
Summary of the invention
The object of the present invention is to provide a kind of mould structure that plastics penetrate the goods warpage of controlling, thereby solve the defective that exists in the prior art.
The present invention realizes through following technical scheme:
A kind of mould structure of controlling plastics ejaculation goods warpage is characterized in that, comprising:
One first half module, this first half module has one first die cavity;
One second half module, this second half module has one second die cavity, and this second die cavity and this first die cavity involute plastics and penetrate shape of products;
One running channel, this running channel are formed in this first half module and/or this second half module, and this running channel ecto-entad perforation is to this first die cavity and this formed space of second die cavity, so that plastics are injected through this running channel; And
At least one sudden change thickness structure, this sudden change thickness structure are formed at the one side of this first half module and one of them pairing this first die cavity of this second half module or this second die cavity.
Wherein, this sudden change thickness structure is a fin or a groove.It is trapezoidal that the cross section of this fin or this groove slightly is.
The present invention also provides a kind of plastics of controlling warpage to penetrate article construction, and these plastics ejaculation goods side therein have at least one sudden change thickness structure.
Wherein, this sudden change thickness structure is a fin or a groove.It is trapezoidal that the cross section of this fin or this groove slightly is.
The mould structure that control plastics of the present invention penetrate the goods warpage is provided with the sudden change thickness structure in the die cavity of mould, make the goods of ejection formation have sudden change thickness structure, therefore can change warp direction, and reach the purpose that the control plastics penetrate the goods warpage.
Because can changing, sudden change thickness flows and refrigerating mode; And the continuous contraction on the local interruption goods; And can change warp direction and warpage degree; So just can partly control because the warpage issues that the mould temperature difference XOR product structure of two-half die is produced by sudden change thickness structure on the mould and the sudden change thickness that on goods, is produced thereof, to solve the warpage issues that general plastics penetrate goods or IMD goods.
Description of drawings
Fig. 1 penetrates the different sketch map that causes the product warpage of the goods two side form temperature difference for plastics;
Fig. 2 is the structural representation of mould of the present invention;
Fig. 3 is the structural representation of plastics ejection formation goods of the present invention;
Fig. 4 is the structural representation of sudden change thickness structure test case;
The amount of warpage chart that Fig. 5 produces for the plastics ejection formation goods of the sudden change thickness structure that has varying number under the different mold temperatures.
Description of reference numerals: first half module-1; First die cavity-11; Second half module-2; Second die cavity-21; Running channel-3; Sudden change thickness structure-4; Plastics ejection formation goods-5,5a, 5b, 5c, 5d; Sudden change thickness structure-51,51a, 51b, 51c, 51d; Plastics penetrate goods-80a, 80b; The sudden change thickness position degree of depth-t; Plastics ejection formation products thickness-t
c
The specific embodiment
Below in conjunction with accompanying drawing, do more detailed explanation with other technical characterictic and advantage to the present invention is above-mentioned.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of mould of the present invention; Fig. 3 is the structural representation of plastics ejection formation goods of the present invention.
The present invention controls the mould structure of plastics ejaculation goods warpage and mainly is made up of one first half module 1 and 2 of one second half modules; This first half module has one first die cavity 11; 2 pairs of this second half modules should have one second die cavity 21 by first die cavity 11, and this second die cavity 21 involutes plastics ejaculation shape of products with this first die cavity 11.
In the present embodiment; This first half module 1 is the form of master mold; This second half module 2 then is the form of male model; And be provided with a running channel 3 in this first half module 1 and 2 of this second half modules, this running channel 3 be end face by this first half module 1 after extending below again bending be communicated in this first die cavity 11, and this running channel 3 also has part to be positioned on the composition surface of this second half module 2 and this first half module 1; And connect to this second die cavity 21, the plastics that ejection formation is used can inject this first die cavity 11 and this second die cavity 21 via this running channel 3.
And be provided with at least one sudden change thickness structure 4 away from the one side of this second half module 2 in first die cavity 11 of this first half module 1; In the present embodiment; Be be example explanation, and respectively this sudden change thickness structure 4 slightly is trapezoidal protruding rib morphology for the cross section with four roads sudden changes thickness structure 4.
Certainly when implementing; The version of mould is not limited to above-described structure, and this sudden change thickness structure 4 is not limited to the form of fin, also can this sudden change thickness structure be designed to a groove form; And its cross section also can be trapezoidal, or other is convenient to the shape of the demoulding.
And the sudden change thickness structure 4 in the mould can be arranged on the wherein one side of the die cavity of arbitrary half module as required, and influence sudden change thickness structure 4 is provided with the factor of position and comprises: the mould temperature difference is different can to cause that with product structure difference etc. plastics penetrate the factor of goods warpage.
And above-mentioned control plastics penetrate the plastics ejection formation goods 5 of the mould structure institute moulding of goods warpage and have at least one sudden change thickness position 51 corresponding to the sudden change thickness structure 4 of first half module 1 of plastics ejection shaping die; Has sudden change thickness position, four roads 51 in the present embodiment; And the thickness position 51 that respectively suddenlys change is the form fit with aforementioned sudden change thickness structure 4, and the cross section slightly is trapezoidal groove structure form.
And if mould part adopts the sudden change thickness structure of groove form, then the sudden change thickness position of these plastics ejection formation goods 5 is the cross section for slightly being trapezoidal rib structures.
Please refer to Fig. 3 again, the degree of depth at each 4 pairs of plastics ejection formations of thickness structure goods, 5 formed sudden change thickness position 51 that suddenly change is t, and the thickness of plastics ejection formation goods 5 is t
c, then change in depth is than (Depth Change Ratio) t
r=t/t
c
Because the Volume Changes of abrupt changes in thickness structure can form discontinuous contraction; And help transmission, the diffusion of temperature; And then can improve because the warpage issues that the male and female mould temperature difference is caused; Therefore the process conditions relevant with the volume of abrupt changes in thickness structure all can influence the warpage degree of ejection formation goods like the change in depth ratio and the numerical value change of quantity, position, and can do different adjustment variations to these process conditions according to required.
Below illustrate the technology that penetrates the goods warpage with sudden change thickness structure control plastics.
After deliberation, aforesaid sudden change thickness structure can influence the warpage degree of plastics ejection formation goods, sees also Fig. 4, and it is the structural representation with the plastics ejection formation goods at varying number sudden change thickness position.The plastics ejection formation goods 5a of (a) has sudden change thickness position 51a one among Fig. 4; (b) plastics ejection formation goods 5b has two roads sudden change thickness position 51b; (c) plastics ejection formation goods 5c has three roads sudden change thickness position 51c; And plastics ejection formation goods 5d (d) has four roads sudden change thickness position 51d; When plastics ejection formation goods 5a, 5b, 5c and 5d are by two identical half modules of temperature when made; Because wherein one side has sudden change thickness position 51a, 51b, 51c or 51d, therefore made plastics ejection formation goods 5a, 5b, 5c and 5d can have the phenomenon of warpage to take place.Hence one can see that, and sudden change thickness position can produce the effect of warpage to plastics ejection formation goods.
See also Fig. 5, it is under the different mold temperatures, has the amount of warpage chart that the plastics ejection formation goods of the sudden change thickness structure of varying number produce.(a) among Fig. 5 is the mold temperature of two half modules when being 25 ℃, the amount of warpage variation diagram of plastics ejection formation goods 5a, 5b, 5c and 5d; (b) of Fig. 5 is the mold temperature of two half modules when being 50 ℃, the amount of warpage variation diagram of plastics ejection formation goods 5a, 5b, 5c and 5d; (c) of Fig. 5 is the mold temperature of two half modules when being 75 ℃, the amount of warpage variation diagram of plastics ejection formation goods 5a, 5b, 5c and 5d.
Learn that after deliberation sudden change thickness can change and flows and refrigerating mode, and local interruption shrinks continuously, and can change warp direction and amount of warpage.And can verify by the test result of Fig. 4 and Fig. 5; The sudden change thickness position of varying number can cause different amount of warpage to change really to the plastics ejection formation goods of processing under the different mold temperatures; And the variation of amount of warpage also can change i.e. variation shown in the dotted arrow among Fig. 5 along with the position difference of sudden change thickness structure.
In view of the above, the sudden change thickness structure is arranged in first half module 1 of mould, makes the one side moulding sudden change thickness position 51 of the plastics ejection formation goods 5 of moulding corresponding to first half module 1.Thus, just can control because the amount of warpage that the mould temperature difference XOR product structure of two-half die is produced, to solve the warpage issues that general plastics penetrate goods or IMD goods by the amount of warpage that sudden change thickness position is produced.
The above is merely preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and in spirit that claim of the present invention limited and scope, can carry out many changes to it, revise, in addition equivalent, but all will fall in protection scope of the present invention.
Claims (10)
1. control the mould structure that plastics penetrate the goods warpage for one kind, it is characterized in that, comprising:
One first half module, this first half module has one first die cavity;
One second half module, this second half module has one second die cavity, and this second die cavity and this first die cavity involute plastics and penetrate shape of products;
One running channel, this running channel are formed in this first half module and/or this second half module, and this running channel ecto-entad perforation is to this first die cavity and this formed space of second die cavity, so that plastics are injected through this running channel; And
At least one sudden change thickness structure, this sudden change thickness structure are formed at the one side of this first half module and one of them pairing this first die cavity of this second half module or this second die cavity.
2. control plastics as claimed in claim 1 penetrate the mould structure of goods warpage, it is characterized in that this sudden change thickness structure is a fin.
3. control plastics as claimed in claim 2 penetrate the mould structure of goods warpage, it is characterized in that it is trapezoidal that the cross section of this fin slightly is.
4. control plastics as claimed in claim 1 penetrate the mould structure of goods warpage, it is characterized in that this sudden change thickness structure is a groove.
5. control plastics as claimed in claim 4 penetrate the mould structure of goods warpage, it is characterized in that it is trapezoidal that the cross section of this groove slightly is.
6. the plastics that can control warpage penetrate article construction, it is characterized in that, these plastics ejaculation goods side therein have at least one sudden change thickness structure.
7. penetrate article construction like the said plastics of controlling warpage of claim 6, it is characterized in that this sudden change thickness structure is a fin.
8. penetrate article construction like the said plastics of controlling warpage of claim 7, it is characterized in that it is trapezoidal that the cross section of this fin slightly is.
9. penetrate article construction like the said plastics of controlling warpage of claim 6, it is characterized in that this sudden change thickness structure is a groove.
10. penetrate article construction like the said plastics of controlling warpage of claim 9, it is characterized in that it is trapezoidal that the cross section of this groove slightly is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051872A CN102441966A (en) | 2010-10-09 | 2010-10-09 | Mould structure for controlling warping of plastic injection product and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105051872A CN102441966A (en) | 2010-10-09 | 2010-10-09 | Mould structure for controlling warping of plastic injection product and product thereof |
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| CN102441966A true CN102441966A (en) | 2012-05-09 |
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| CN2010105051872A Pending CN102441966A (en) | 2010-10-09 | 2010-10-09 | Mould structure for controlling warping of plastic injection product and product thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738599A (en) * | 2017-02-23 | 2017-05-31 | 佛山市顺德区百年科技有限公司 | The processing method of irregular elongated injecting products, injection mold and product |
| CN107150123A (en) * | 2016-03-04 | 2017-09-12 | 中原大学 | Metal ejection and back pressure system and method thereof |
Citations (7)
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|---|---|---|---|---|
| JPH05286295A (en) * | 1992-04-15 | 1993-11-02 | Dainippon Printing Co Ltd | Production of ic card substrate and mold for producing said substrate |
| US20050106074A1 (en) * | 2003-08-08 | 2005-05-19 | Enplas Corporation | Sample handling plate |
| CN1636703A (en) * | 2003-11-18 | 2005-07-13 | I&P有限公司 | Axle body and producing method thereof |
| JP2007210321A (en) * | 2006-01-12 | 2007-08-23 | Daicel Chem Ind Ltd | Rod-like molding |
| CN101407098A (en) * | 2007-10-12 | 2009-04-15 | 深圳富泰宏精密工业有限公司 | Mould and method for moulding moulded product by using the same |
| CN101409988A (en) * | 2007-10-09 | 2009-04-15 | 深圳富泰宏精密工业有限公司 | Casing and mold for manufacturing the same |
| TWM373815U (en) * | 2009-06-12 | 2010-02-11 | Cheng Uei Prec Ind Co Ltd | Mold with cut in advance structure |
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2010
- 2010-10-09 CN CN2010105051872A patent/CN102441966A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05286295A (en) * | 1992-04-15 | 1993-11-02 | Dainippon Printing Co Ltd | Production of ic card substrate and mold for producing said substrate |
| US20050106074A1 (en) * | 2003-08-08 | 2005-05-19 | Enplas Corporation | Sample handling plate |
| CN1636703A (en) * | 2003-11-18 | 2005-07-13 | I&P有限公司 | Axle body and producing method thereof |
| JP2007210321A (en) * | 2006-01-12 | 2007-08-23 | Daicel Chem Ind Ltd | Rod-like molding |
| CN101409988A (en) * | 2007-10-09 | 2009-04-15 | 深圳富泰宏精密工业有限公司 | Casing and mold for manufacturing the same |
| CN101407098A (en) * | 2007-10-12 | 2009-04-15 | 深圳富泰宏精密工业有限公司 | Mould and method for moulding moulded product by using the same |
| TWM373815U (en) * | 2009-06-12 | 2010-02-11 | Cheng Uei Prec Ind Co Ltd | Mold with cut in advance structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150123A (en) * | 2016-03-04 | 2017-09-12 | 中原大学 | Metal ejection and back pressure system and method thereof |
| CN106738599A (en) * | 2017-02-23 | 2017-05-31 | 佛山市顺德区百年科技有限公司 | The processing method of irregular elongated injecting products, injection mold and product |
| CN106738599B (en) * | 2017-02-23 | 2019-10-15 | 佛山市顺德区百年科技有限公司 | Processing method, injection mold and the product of irregular elongated injecting products |
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Application publication date: 20120509 |