CN101254642A - Dual-color one-shot forming injection mold and injection molding method thereof - Google Patents
Dual-color one-shot forming injection mold and injection molding method thereof Download PDFInfo
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- CN101254642A CN101254642A CNA2008100809966A CN200810080996A CN101254642A CN 101254642 A CN101254642 A CN 101254642A CN A2008100809966 A CNA2008100809966 A CN A2008100809966A CN 200810080996 A CN200810080996 A CN 200810080996A CN 101254642 A CN101254642 A CN 101254642A
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Abstract
The invention discloses an injection molding mold for double-color one-step molding injection mold and an injection molding method by using the mold. The double-color one-step molding injection mold comprises a mold cavity consisting of a cavity (1) and a core (2), and a movable separator (4) for dividing the mold cavity into two sections. The injection molding method by using the injection mold comprises the following steps: closing the mold, and dividing the mold cavity by the separator; injecting a first material; injecting a second material; closing the injection hole (1); retreating the separator; and closing the injection hole (2), cooling, keeping the pressure, and de-molding to eject a plastic part. Alternatively, the second material is injected after cooling the first material, keeping the temperature and retreating the separator. The injection mold and the molding method are used for injection molding of double-color plastic parts, with the advantages simple production process and stable product quality. The mold has the advantages of simple structure, easy manufacture and low cost.
Description
Affiliated technical field
The injection molding forming method that the present invention relates to a kind of plastic injection mould and use this mould especially refers to be used for the injection mold and the injection molding forming method of dual-color one-shot forming.
Background technology
Current many products all adopt the plastics of two kinds of different colours or unlike material, combine with opaque material as transparent material, red white double-colored product.For the plastic of this many materials or polychrome, when moulding, adopt following two kinds of methods usually.
1. use post forming method: two kinds of plastic material moulding at twice; Product carries out a kind of material of the injection mo(u)lding first time from a mold, and depanning is put into an other mold again and carried out the injection mo(u)lding second time after taking out.This moulding technology need be finished by 2 molds, but does not need special double coloured plastic injection machine.Make double-colored adhesion strength of moulding in this way poor, element precision is low, and the surface is comparatively coarse.The cycle of a product of its moulding simultaneously is longer, and management difficulty is higher.
2. use the rotary die one-shot forming: the injection moulding on a special injection machine of multiple plastic material, divide moulding several times, need to use a cover rotary die.Rotary die comprises many group die cavities and core, and the shape of each die cavity is different, a kind of material product of difference moulding, and the shape of core is just the same.Behind first kind of material of injection, the forward and backward mould of mould is rotated with the center, carries out the injection of second kind of material again.Make and to make the outward appearance of product beautiful in this way.But mould involves great expense, the specification requirement height, and be restricted the service life of mould.
Summary of the invention
The object of the present invention is to provide a kind of dual-color one-shot forming injection mold and injection molding forming method, it can realize using a secondary mould to finish the injection moulding of multiple plastics, and mould structure is simple, is easy to make and use.
The technical solution adopted for the present invention to solve the technical problems is: the dual-color one-shot forming injection mold constitutes die cavity by mold cavity and core, uses a mobilizable separator that die cavity is separated into two parts, and the core of separation partly uses and inserts.This separator cuts off die cavity when matched moulds, withdraws from the injection that a segment distance carries out second kind of material again behind a kind of material of injection.
In the mould of a multi-cavity mold, can place separator by a die cavity therein, place separator respectively in perhaps a plurality of die cavitys.
Separator can be placed on the dynamic model side, and uses hydraulic cylinder to control.
Need use a double coloured plastic injection machine when using the double-colored plastic of dual-color one-shot forming injection mould processing, this injection machine has two barrels, and two nozzles are arranged.The step of double-colored single injection-molded is as follows:
Step 1: closing molding, and separator is pushed to the operating position separates die cavity.
Step 2: inject first kind of plastic material to the die cavity of separating with first nozzle.
Step 3: inject second kind of plastic material to die cavity with second nozzle.
Step 4: close first nozzle.
Step 5: separator is stepped back a wall thickness distance.
Step 6: close second nozzle.
Step 7: carry out the pressurize cooling.
Step 8: die sinking, and eject plastic.
Also can adopt following steps:
Step 1: closing molding, and separator is pushed to the operating position separates die cavity.
Step 2: inject first kind of plastic material with first nozzle to the die cavity of separating, and cool off pressurize.
Step 3: separator is stepped back a wall thickness distance.
Step 4: inject second kind of plastic material with second nozzle to die cavity, and cool off pressurize.
Step 5: die sinking, and eject plastic.
The present invention compared with prior art has following beneficial effect:
Use the present invention to carry out two materials or double-colored plastic part production, when injection mo(u)lding, because the restriction of separator, will be in the zone that limits when injecting for the first time.Carry out the injection second time after separator withdrawed from, the material of injection will be directly bonded on the material that has been shaped of injection for the first time for the second time, thereby make two kinds of materials in conjunction with as a whole.Since when injecting for the second time, not cooling fully of the material of injection for the first time, thereby can obtain very high bond strength.
Use the present invention to carry out double-colored plastic part production, only need a secondary mould, and can one-shot forming, improved working (machining) efficiency, and can ensure the quality of products and good product appearance.
Mould structure of the present invention is simple, and is approaching with ordinary injection die, and need not to be rotated in forming process, thereby the manufacturing of mould is relative simple and easy with maintenance, and cost significantly descends.
Description of drawings
Fig. 1 is the schematic diagrames of one embodiment of the present of invention before first kind of material of injection.
Fig. 2 is the schematic diagrames of one embodiment of the present of invention behind first kind of material of injection.
Fig. 3 is the schematic diagrames of one embodiment of the present of invention before second kind of material of injection.
Fig. 4 is the schematic diagrames of one embodiment of the present of invention behind second kind of material of injection.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1～embodiment illustrated in fig. 4, the dual-color one-shot forming injection mold constitutes die cavity by mold cavity (1) and core (2), uses a mobilizable separator (4) that die cavity is separated into two parts, and the core in the separator is partly made insert (3).Separator (4) is positioned at the dynamic model side, and is controlled by hydraulic cylinder (5).
When using this mould to carry out injection mo(u)lding, carry out according to the following steps:
Step 1: closing molding, and separator (4) is pushed to the operating position of fitting with die cavity (1) separates die cavity.
Step 2: inject first kind plastic material (61) through cast gate (11) to the die cavity of separating with first nozzle, and cool off pressurize.
Step 3: separator (4) is stepped back a wall thickness distance.
Step 4: inject second kind plastic material (62) through cast gate (12) to die cavity with second nozzle, and cool off pressurize.
Step 5: die sinking, and eject plastic.
By above-mentioned steps, the material of injection fuses with the material of injecting for the first time and is one for the second time, finishes the injection mo(u)lding of dual-color plastic goods.
Claims (5)
1. dual-color one-shot forming injection mold is characterized in that: constitute die cavity by mold cavity (1) and core (2), use a mobilizable separator (4) that die cavity is separated into two parts, the core of separation is partly made insert (3).Separator (4) cuts off die cavity when matched moulds, withdraws from the injection that a segment distance carries out second kind of material again behind a kind of material of injection.
2. dual-color one-shot forming injection mold as claimed in claim 1 is characterized in that: described mold cavity (1) can constitute a plurality of die cavitys with core (2), uses separator in one or more die cavitys therein.
3. many materials one-shot forming injection mold as claimed in claim 1 or 2 is characterized in that: described separator (4) is in the dynamic model side.
4. an injection molding forming method that utilizes dual-color one-shot forming injection mold as claimed in claim 1 is characterized in that, the step of injection mo(u)lding is as follows:
Step 1: closing molding, and separator is pushed to the operating position separates die cavity.
Step 2: inject first kind of plastic material to the die cavity of separating with first nozzle.
Step 3: inject second kind of plastic material to die cavity with second nozzle.
Step 4: close first nozzle.
Step 5: separator is stepped back a wall thickness distance.
Step 6: close second nozzle.
Step 7: carry out the pressurize cooling.
Step 8: die sinking, and eject plastic.
5. an injection molding forming method that utilizes dual-color one-shot forming injection mold as claimed in claim 1 is characterized in that, the step of injection mo(u)lding is as follows:
Step 1: closing molding, and separator is pushed to the operating position separates die cavity.
Step 2: inject first kind of plastic material with first nozzle to the die cavity of separating, and cool off pressurize.
Step 3: separator is stepped back a wall thickness distance.
Step 4: inject second kind of plastic material with second nozzle to die cavity, and cool off pressurize.
Step 5: die sinking, and eject plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100809966A CN101254642A (en) | 2008-03-02 | 2008-03-02 | Dual-color one-shot forming injection mold and injection molding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100809966A CN101254642A (en) | 2008-03-02 | 2008-03-02 | Dual-color one-shot forming injection mold and injection molding method thereof |
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| CN101254642A true CN101254642A (en) | 2008-09-03 |
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| CNA2008100809966A Pending CN101254642A (en) | 2008-03-02 | 2008-03-02 | Dual-color one-shot forming injection mold and injection molding method thereof |
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Cited By (19)
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| CN101890784A (en) * | 2010-06-28 | 2010-11-24 | 上海子元汽车零部件有限公司 | Molding method of double-density product |
| CN102233648A (en) * | 2010-04-23 | 2011-11-09 | 天津联盈电子塑料制品有限公司 | One-time injection molding process for double-component material, and mould used by same |
| CN102294787A (en) * | 2011-08-11 | 2011-12-28 | 上海小糸车灯有限公司 | Groove structure of material sealing rib insert and application thereof |
| CN103096833A (en) * | 2010-07-30 | 2013-05-08 | 株式会社普罗凯尔 | Electric toothbrush, toothbrush bristle assembly, and method for manufacturing the toothbrush bristle assembly |
| WO2013117127A1 (en) * | 2012-02-08 | 2013-08-15 | 珠海天威飞马打印耗材有限公司 | Method for manufacturing scraping knife |
| CN103624214A (en) * | 2012-08-25 | 2014-03-12 | 天津湶钰冒口有限公司 | One-time forming manufacturing technology for internal heat riser |
| CN104669522A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Children bicycle pedal forming plastic mold |
| CN104669531A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Handlebar inside seat forming plastic mold |
| CN104669532A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Plastic mold for molding vehicle handle shell |
| CN105014864A (en) * | 2014-05-02 | 2015-11-04 | 东芝机械株式会社 | Molding apparatus, method of molding, and molded products |
| CN105345974A (en) * | 2015-12-10 | 2016-02-24 | 吴明武 | Method for preparing dual-color zone or multiple-color zone soft shell |
| CN105437439A (en) * | 2015-12-10 | 2016-03-30 | 吴明武 | Method for preparing soft shell |
| CN105881808A (en) * | 2014-09-28 | 2016-08-24 | 宁波东昊汽车部件有限公司 | Ventilation door double-color mold |
| CN107088991A (en) * | 2017-05-27 | 2017-08-25 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of top cover and the different bottle cap of body color |
| CN107457960A (en) * | 2017-08-16 | 2017-12-12 | 全兴工装设备（南京）有限公司 | Automotive trimming door plate double-color and double-hardness injection mold and its forming method |
| CN110696298A (en) * | 2019-11-27 | 2020-01-17 | 童爱霞 | Injection mold |
| CN111590817A (en) * | 2020-06-03 | 2020-08-28 | 程链 | Injection molding plate forming mold with framework and using method thereof |
| CN113733461A (en) * | 2021-10-11 | 2021-12-03 | 玫瑰塑胶(昆山)有限公司 | Packaging box with different-color three-dimensional marks and injection molding mold thereof |
| CN114261064A (en) * | 2021-12-31 | 2022-04-01 | 江苏启钊精密模具有限公司 | Injection mold and injection method for forming plane color matching product |
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2008
- 2008-03-02 CN CNA2008100809966A patent/CN101254642A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233648A (en) * | 2010-04-23 | 2011-11-09 | 天津联盈电子塑料制品有限公司 | One-time injection molding process for double-component material, and mould used by same |
| CN101890784A (en) * | 2010-06-28 | 2010-11-24 | 上海子元汽车零部件有限公司 | Molding method of double-density product |
| CN101890784B (en) * | 2010-06-28 | 2013-04-24 | 上海子元汽车零部件有限公司 | Molding method of double-density product |
| CN103096833A (en) * | 2010-07-30 | 2013-05-08 | 株式会社普罗凯尔 | Electric toothbrush, toothbrush bristle assembly, and method for manufacturing the toothbrush bristle assembly |
| CN103096833B (en) * | 2010-07-30 | 2015-06-24 | 株式会社普罗凯尔 | Electric toothbrush, toothbrush bristle assembly, and method for manufacturing the toothbrush bristle assembly |
| CN102294787A (en) * | 2011-08-11 | 2011-12-28 | 上海小糸车灯有限公司 | Groove structure of material sealing rib insert and application thereof |
| CN102294787B (en) * | 2011-08-11 | 2013-05-29 | 上海小糸车灯有限公司 | Groove structure of material sealing rib insert and application thereof |
| WO2013117127A1 (en) * | 2012-02-08 | 2013-08-15 | 珠海天威飞马打印耗材有限公司 | Method for manufacturing scraping knife |
| CN103624214A (en) * | 2012-08-25 | 2014-03-12 | 天津湶钰冒口有限公司 | One-time forming manufacturing technology for internal heat riser |
| CN104669522A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Children bicycle pedal forming plastic mold |
| CN104669531A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Handlebar inside seat forming plastic mold |
| CN104669532A (en) * | 2013-12-02 | 2015-06-03 | 苏州市吴中区临湖俊峰机械厂 | Plastic mold for molding vehicle handle shell |
| CN105014864A (en) * | 2014-05-02 | 2015-11-04 | 东芝机械株式会社 | Molding apparatus, method of molding, and molded products |
| US9844901B2 (en) | 2014-05-02 | 2017-12-19 | Toshiba Kikai Kabushiki Kaisha | Molding apparatus, method of molding, and molded products |
| US10124517B2 (en) | 2014-05-02 | 2018-11-13 | Toshiba Kikai Kabushiki Kaisha | Molding apparatus, method of molding, and molded products |
| CN105881808A (en) * | 2014-09-28 | 2016-08-24 | 宁波东昊汽车部件有限公司 | Ventilation door double-color mold |
| CN105437439A (en) * | 2015-12-10 | 2016-03-30 | 吴明武 | Method for preparing soft shell |
| CN105345974A (en) * | 2015-12-10 | 2016-02-24 | 吴明武 | Method for preparing dual-color zone or multiple-color zone soft shell |
| CN107088991A (en) * | 2017-05-27 | 2017-08-25 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of top cover and the different bottle cap of body color |
| CN107088991B (en) * | 2017-05-27 | 2023-03-21 | 张家港市天江精密模具制造有限公司 | Injection mold of bottle cap with top cap and body different in color |
| CN107457960A (en) * | 2017-08-16 | 2017-12-12 | 全兴工装设备（南京）有限公司 | Automotive trimming door plate double-color and double-hardness injection mold and its forming method |
| CN110696298A (en) * | 2019-11-27 | 2020-01-17 | 童爱霞 | Injection mold |
| CN110696298B (en) * | 2019-11-27 | 2021-07-30 | 宁波市国盛仪表有限公司 | Injection mold |
| CN111590817A (en) * | 2020-06-03 | 2020-08-28 | 程链 | Injection molding plate forming mold with framework and using method thereof |
| CN113733461A (en) * | 2021-10-11 | 2021-12-03 | 玫瑰塑胶(昆山)有限公司 | Packaging box with different-color three-dimensional marks and injection molding mold thereof |
| CN114261064A (en) * | 2021-12-31 | 2022-04-01 | 江苏启钊精密模具有限公司 | Injection mold and injection method for forming plane color matching product |
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Open date: 20080903 |