CN101256426B - Notebook computer casing injection shaping method - Google Patents
Notebook computer casing injection shaping method Download PDFInfo
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- CN101256426B CN101256426B CN2007100734166A CN200710073416A CN101256426B CN 101256426 B CN101256426 B CN 101256426B CN 2007100734166 A CN2007100734166 A CN 2007100734166A CN 200710073416 A CN200710073416 A CN 200710073416A CN 101256426 B CN101256426 B CN 101256426B
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Abstract
The invention relates to a notebook PC case, consists of a body (1) formed by injection molding, a protecting layer (2) attached to the body (1) when injection molded, and a middle layer (2) positioned therebetween. The invention also provides a method for manufacturing the notebook PC case, comprising: processing PC or PET sheet material used as the protecting layer; combining the middle layer with the protecting layer by printing; processing the combination of the middle layer and the protecting layer; putting the combination into an injection molding mould cavity of the case, injection molding and forming the body integrated with the middle layer and the protecting layer. The embodiment of the invention has the following beneficial effects: the outer surface of the case of the notebook computer is durable, not easy to damage or scrape, the printed pattern thereon is not easy to drop off or pollute and has environment-protecting effect.
Description
Technical field
The present invention relates to a kind of injection molding forming method, more particularly, relate to a kind of injection molding forming method of notebook computer casing.
Background technology
The moulding when shell of notebook computer is most, the most technologies such as traditional spraying, printing that adopt of its outside surface.Along with the more and more rejuvenation of use crowd of notebook computer, the consumer is also more and more higher to the personalization requirement of notebook computer, and this requirement not only shows on the performance of notebook computer, equally, also shows on its moulding color; And commercial, the moulding of notebook computer, its surperficial pattern and color always are one of its attractions.Usually, the various notebook computer of rich color, pattern is than the easier sale of notebook computer of single tones such as traditional silver color or grey.Though the shell of traditional notebook computer is handled also and can be satisfied the demands of consumers to a certain extent by the technology of spraying, printing, but the permanance by the outside surface of the notebook computer shell of conventional process is bad, fragile, scratch, or surface printing easily comes off and pollutes.
Summary of the invention
C) combination of described middle layer of processing and described protective seam;
D) described combination is put into the molding mold cavity of this notebook computer shell, and injection moulding forms the body that fuses together with described protective seam and middle layer, and wherein, described injection moulding process adopts low-pressure injection molding, and its technological parameter comprises: 250 ℃-280 ℃ of injection temperatures; Injection moulding process comprises four-stage: the phase one injection pressure comprises 120MPa-130MPa; The subordinate phase injection pressure comprises 110MPa-120MPa; The phase III injection pressure comprises 100MPa-110MPa; Packing stage keep-ups pressure and comprises 60MPa-80MPa.
In method of the present invention, described step a) is divided into following steps:
A1) described PC or PET sheet material are cut out the size of reserving in advance;
C) combination of described middle layer 2 of processing and described protective seam 3;
D) described combination is put into the molding mold cavity of this notebook computer shell, and injection moulding forms the body 1 that fuses together with described protective seam 3 and middle layer 2, and wherein, described injection moulding process adopts low-pressure injection molding, and its technological parameter comprises: 250 ℃-280 ℃ of injection temperatures; Injection moulding process comprises four-stage: the phase one injection pressure comprises 120MPa-130MPa; The subordinate phase injection pressure comprises 110MPa-120MPa; The phase III injection pressure comprises 100MPa-110MPa; Packing stage keep-ups pressure and comprises 60MPa-80MPa.
In method of the present invention, described step a) is divided into following steps:
A1) described PC or PET sheet material are cut out the size of reserving in advance;
A2) one side of described PC or PET sheet material is made cure process.
In method of the present invention, described step c) is divided into following steps:
C1) described combination is passed through high temperature or high-pressure molding;
C2) redundance with the described combination after the described moulding cuts, and makes described combination identical with described notebook computer casing surface.
Implement the injection molding forming method of notebook computer casing of the present invention, has following beneficial effect: because being combined in before the injection moulding at middle layer and protective seam, so can be according to different customer requirements, different middle layers is provided, thereby satisfy more and more important personalized requirement, and can reduce the production cycle; Because protective seam is positioned at the outside in described middle layer, the user can not touch the middle layer, can not cause damage to the middle layer naturally yet again; so this notebook computer casing outside surface good endurance; not fragile, scratch, the pattern of its printing is difficult drop-off and pollution also, has environment protecting.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the section of structure on notebook computer casing surface in the embodiment of the invention;
Fig. 2 is the outside synoptic diagram of notebook computer casing loam cake in the embodiment of the invention;
Fig. 3 is the process flow diagram of the injection molding forming method of notebook computer casing in the embodiment of the invention.
Embodiment
As shown in Figure 1, in an embodiment of the present invention, the outside surface of the described notebook computer casing (outside surface when being shut of upper side in notebook computer, comprise end face, bottom surface and side) comprising: body 1, middle layer 2 and protective seam 3, described protective seam 3 and described body 1 are integrated, described middle layer 2 is between described protective seam 3 and described body 1, in the present embodiment, described middle layer 2 is resistant to elevated temperatures printing ink, described protective seam 3 is transparent, PET sheet material (polyethylene terephthalate), certainly, in actual applications, also can select PC sheet material (polycarbonate) for use; In the present embodiment, described PET sheet material size is on demand cut out, with described protective seam 3, be that the one side of described PET sheet material is through cure process, make its hardness reach HB-3H, in use can not scratch, in the one side without the overcure processing of described PET sheet material with assurance, form with serigraphy, with described middle layer 2, promptly resistant to elevated temperatures printing ink is printed on the described PET sheet material by the pattern that designs; Described middle layer 2 and described protective seam 3 in shaping mould through the gas high-pressure molding, and die-cut crop unnecessary limit after, make the external surface shape of itself and described notebook computer shell suitable.
Usually, the product injection mold is divided into dynamic model and cover half, and space middle behind described dynamic model and the cover half matched moulds is a die cavity, and the inside surface that constitutes above-mentioned space on described dynamic model and the cover half is a profile, and in fact, described profile is exactly the outside surface or the inside surface of this product.In the present embodiment; described notebook computer casing is no exception; the injection mold of its shell is divided into dynamic model and cover half equally; the profile of the outside surface of its shell is positioned on the dynamic model; the profile of above-mentioned middle layer 2 and the profile of protective seam 3 and described outer surface of outer cover is suitable; in fact be exactly and above-mentioned dynamic model on the profile of described outer surface of outer cover suitable; described middle layer 2 and protective seam 3 are placed on the profile of the outer surface of outer cover in the described dynamic model; mold-closing injection; because what injection machine was injected die cavity during injection moulding is the plastic cement melt; the full described die cavity of this melt filling; and cooled and solidified and form described body 1; in above-mentioned process, the body 1 of described ot-yet-hardened and described middle layer 2 and protective seam 3 fusions form a complete notebook computer casing.The middle layer 2 of this notebook computer casing comprises printing ink, and this middle layer 2 combines by silk-screen and described protective seam 3, so can use a secondary mould, obtains notebook computer shell numerous different patterns, that color is various.
Fig. 2 is the outside synoptic diagram of loam cake in the present embodiment, in Fig. 2, can see that there is the pattern of Hua Jiye in the described notebook computer casing loam cake outside, and this pattern is that described middle layer 2 is formed.In actual applications, be not limited to pattern and the color of Fig. 2 certainly,, just can obtain the different patterns or the notebook computer casing of color as long as when above-mentioned silk-screen, print different design and colors.
In the present embodiment; adopted the injection moulding process of in-mode inserts injection moulding (IN MOLDING LABEL) to finish the production of described notebook computer casing; be the labeling printing in the in-mode inserts injection moulding when combining with described protective seam 3 in described middle layer 2; the above-mentioned protective seam that prints 3 is being put into injection mold; and beginning is during injection moulding; adopted low-pressure injection molding technology; further guarantee described middle layer 2 formed patterns and described body 1 and described protective seam 3 more firm bonding, and in order to make described notebook computer casing that higher injection moulding quality and yield rate be arranged when the injection mo(u)lding.
As shown in Figure 3, the embodiment of the invention is made through following method:
Step a): handle PC or PET sheet material as described protective seam 3; In described step a), further comprise the steps:
A1) described PC or PET sheet material are cut out the size of reserving in advance, the PC or the PET sheet material that are about to whole utilize mould or other tool scissors to be cut into the size more bigger than this notebook computer casing;
A2) one side of described PC or PET sheet material is made cure process, carry out cure process in the one side of the sheet material of cutting out, so that this carries out the outermost of the one side of cure process at whole notebook computer casing after the machine-shaping, it is difficult for being scratched to make the surface.
Step b) combines middle layer 2 by printing and described protective seam 3; In the present embodiment, be resistant to elevated temperatures printing ink in the described middle layer 2 of this step, described printing ink is printed onto on the described protective seam 3 by the mode with silk-screen, on promptly above-mentioned PC or the PET sheet material not by the one side of cure process.
Step c) is handled the combination of described middle layer 2 and described protective seam 3; Also further comprise the steps: in described step c)
C1) described combination is passed through high temperature or/and high-pressure molding, in the present embodiment, what adopt is to carry out high pressure and high-pressure molding in mould, utilize high temperature to make the combination of described sheet material and printing ink softening, and then make it become the profile consistent with the outside surface of described notebook computer casing with gases at high pressure;
C2) redundance with the described combination after the described moulding cuts, make described combination identical with described notebook computer casing surface, be to carry out die-cut die cutting die by 6 oil cylinders drive slide blocks to cut sheet in the present embodiment, neither damage the pattern that described sheet material, printing ink and printing ink form, can not make sheet material corrugation again, shrink, and the profile physical dimension after wanting strict control die-cut.
The described combination of step d) is put into the molding mold cavity of this notebook computer shell; injection moulding; form the body 1 that fuses together with described protective seam 3 and middle layer 2; combination after the above-mentioned moulding is suitable because of the outside surface of its profile and this notebook computer shell; so this puts into this shell injection mold cavity in conjunction with physical efficiency; and be close to its profile; behind the matched moulds; the beginning injection moulding; chew the melt that enters by the needle-valve heat of injection mold described combination is further promoted to be close to profile, described melt cooling back forms described notebook computer casing body 1.
In described step d), adopt the technology of low-pressure injection molding.In low-pressure injection molding, injection moulding process comprises a plurality of injection phase and packing stage, the adjustment of Shooting Technique parameters such as injection pressure is provided with extremely important, and described injection parameters may directly influence the final mass of product and the adhesion of described body 1 and described combination.In the present embodiment, described low-pressure injection molding process comprises three injection phase and a packing stage, and its technological parameter is: 260 ℃ of injection temperatures; The phase one injection pressure comprises 120MPa; The subordinate phase injection pressure comprises 110MPa; The phase III injection pressure comprises 100MPa; Packing stage keep-ups pressure and comprises 65MPa.
In the present embodiment; because described middle layer 2 is that heatproof is higher than 280 ℃ printing ink; so in above-mentioned injection moulding process, can keep originally being printed on the pattern on the described protective seam 3; certainly; the maintenance of this pattern is also relevant with the temperature of injection moulding, pressure, time etc., and different technological parameters may cause different yield rates or different effects.
Claims (3)
1. the injection molding forming method of a notebook computer casing, described notebook computer casing comprise the body (1) that injection moulding forms, protective seam (3) and the middle layer between the two (2) of outside surface, it is characterized in that, comprise the steps:
A) processing is as the PC or the PET sheet material of described protective seam (3);
B) middle layer (2) are combined by printing and described protective seam (3), described middle layer (2) are resistant to elevated temperatures printing ink;
C) handle the combination of described middle layer (2) and described protective seam (3);
D) described combination is put into the molding mold cavity of this notebook computer shell, injection moulding, form the body (1) that fuses together with described protective seam (3) and middle layer (2), wherein, described injection moulding process adopts low-pressure injection molding, its technological parameter comprises: 250 ℃-280 ℃ of injection temperatures, and injection moulding process comprises four-stage: the phase one injection pressure comprises 120MPa-130MPa; The subordinate phase injection pressure comprises 110MPa-120MPa; The phase III injection pressure comprises 100MPa-110MPa; The 4th packing stage keep-ups pressure and comprises 60MPa-80MPa.
2. method according to claim 1 is characterized in that, described step a) is divided into following steps:
A1) will cut out the size of reserving in advance as the PC or the PET sheet material of described protective seam (3);
A2) one side of described PC or PET sheet material is made cure process.
3. method according to claim 1 is characterized in that, described step c) is divided into following steps:
C1) described combination is passed through high temperature or high-pressure molding;
C2) redundance with described combination cuts, and makes described combination identical with described notebook computer casing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100734166A CN101256426B (en) | 2007-02-28 | 2007-02-28 | Notebook computer casing injection shaping method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100734166A CN101256426B (en) | 2007-02-28 | 2007-02-28 | Notebook computer casing injection shaping method |
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| CN101256426A CN101256426A (en) | 2008-09-03 |
| CN101256426B true CN101256426B (en) | 2011-11-09 |
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| CN2007100734166A Active CN101256426B (en) | 2007-02-28 | 2007-02-28 | Notebook computer casing injection shaping method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105224027A (en) * | 2015-10-22 | 2016-01-06 | 泰逸电子（昆山）有限公司 | A kind of nylon glass fiber composite material notebook computer drain pan and Shooting Technique thereof |
| CN107283977B (en) * | 2017-07-12 | 2019-03-26 | 合肥东恒锐电子科技有限公司 | A kind of composite material for computer casing |
| CN108839504A (en) * | 2018-08-03 | 2018-11-20 | 合肥联宝信息技术有限公司 | A kind of shell and surface treatment method and the electronic equipment for including the shell |
| CN111571969A (en) * | 2020-05-25 | 2020-08-25 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Substrate for green body printing of MLCC wet process and preparation method thereof |
| CN112662125A (en) * | 2020-12-23 | 2021-04-16 | 太仓市众翔精密五金有限公司 | High-strength pressure-resistant notebook computer cover and injection molding process thereof |
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| CN1232277A (en) * | 1998-04-13 | 1999-10-20 | 固特橡胶股份有限公司 | Method for making light transmission film key and products thereof |
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| CN2678874Y (en) * | 2004-03-14 | 2005-02-16 | 林云 | Plastic member having surface coated decoration face |
| CN201063130Y (en) * | 2007-02-28 | 2008-05-21 | 深圳市群达行精密模具有限公司 | Casing of note book computer |
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| CN1232277A (en) * | 1998-04-13 | 1999-10-20 | 固特橡胶股份有限公司 | Method for making light transmission film key and products thereof |
| CN1396062A (en) * | 2001-07-16 | 2003-02-12 | 太乙印刷企业股份有限公司 | Planography plus screen print technology for IMD hot press and ejection forming |
| CN2678874Y (en) * | 2004-03-14 | 2005-02-16 | 林云 | Plastic member having surface coated decoration face |
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Owner name: KUNDA PLASTIC ELECTRONIC (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: QUNDAHANG PRECISION MOULD CO., LTD., SHENZHEN CITY Effective date: 20110907 |
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Effective date of registration: 20110907 Address after: 518112 Guangdong, Longgang District, Bantian District, Shenzhen street, Bantian community, Bantian South Road, No. 6 group, three, 403, 2, 3, 4 Applicant after: Shenzhen Qundahang Plastic Electronic Co., Ltd. Address before: 518112, No. 6, South Bantian Road, Sakamoto village, Buji Town, Longgang District, Guangdong, Shenzhen Applicant before: Qundahang Precision Mould Co., Ltd., Shenzhen City |
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