CN102101345A - Injection molding method - Google Patents
Injection molding method Download PDFInfo
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- CN102101345A CN102101345A CN2009103120038A CN200910312003A CN102101345A CN 102101345 A CN102101345 A CN 102101345A CN 2009103120038 A CN2009103120038 A CN 2009103120038A CN 200910312003 A CN200910312003 A CN 200910312003A CN 102101345 A CN102101345 A CN 102101345A
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- injection molding
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection molding method. An injection molding mold and an injection molding machine are used for manufacturing a plastic product. The injection molding mold comprises a first mold body and a second mold body; a first cavity is formed in the first mold body; and a second cavity which is communicated with the first cavity is formed in the second mold body. The plastic product is arranged on the body of a device and comprises a first molded body positioned in the body and a second molded body of which at least one part of the surface is exposed out of the body. The injection molding method comprises the following steps of: injecting a first molten plastic material into the first cavity, and cooling and molding the first plastic material to form the first molded body; injecting a second molten plastic material into the second cavity, cooling and molding the second plastic material to form the second molded body on the first molded body; and taking the molded plastic product out. By the injection molding method, the influence of the rough molded surface of the mold on the outer surface of the injection-molded plastic product is lowered by secondary injection molding, and the flatness of the outer surface of the plastic product can be improved.
Description
Technical field
The present invention relates to injection molding technology, relate in particular to a kind of injection molding forming method.
Background technology
When using injection molding forming method to make some plastic cement products, normally disposable injection melt plastic cement in mould promptly obtains plastic cement products behind the cooling forming.Because the common out-of-flatness of structure of the non-appearance of plastic cement products, appearance then needs very smooth, therefore when mfg. moulding die, general more smooth corresponding to the die of the appearance of plastic cement products, then generally all more coarse corresponding to the die of the non-appearance of plastic cement products.But when the melt plastic cement cooled and solidified of injecting, it is inhomogeneous that the die of coarse non-appearance will cause the melt plastic cement in the whole die cavity to be shunk, thereby make that the appearance of the plastic cement products after the moulding is also smooth inadequately.
Summary of the invention
In view of this, be necessary to provide a kind of injection molding forming method that improves the plastic cement products quality.
A kind of injection molding forming method, it adopts injection forming mold and injection moulding machine to make plastic cement products.This injection forming mold comprises first die body and second die body, forms first die cavity in first die body, forms second die cavity that is communicated with first die cavity in second die body.Described plastic cement products is used to be installed in the body of a device, and described plastic cement products comprises and is positioned at second formed body that expose from body on described intrinsic first formed body and at least a portion surface.Described injection molding forming method comprises:
To first plastic material of described first die cavity injection fusion, and cooling forming, to form described first formed body;
To second plastic material of described second die cavity injection fusion, and cooling forming, to form described second formed body at described first formed body on the surface of second die cavity, second formed body and first formed body mutually combine; And
Take out the plastic cement products of moulding.
Compared to common single injection-molded method, above-mentioned injection molding forming method is by the quadric injection mould moulding, can reduce of the influence of coarse molding surface, thereby improve the flatness of the outer surface of plastic cement products, to improve the quality of plastic cement products the outer surface of the plastic cement products of injection mo(u)lding.
Description of drawings
Fig. 1 is the flow chart of the injection molding forming method of a better embodiment.
Fig. 2-the 5th, the schematic diagram of each step in the injection molding forming method among Fig. 1.
The component symbol explanation
Below in conjunction with accompanying drawing, be described in further detail.
Figure 1 shows that the schematic diagram of the injection molding forming method 100 of a better embodiment.This injection molding forming method 100 comprises step 102-108:
Step 102: please join Fig. 2, be provided for the injection forming mold 200 and the injection moulding machine 300 of forming plastic cement product.This injection forming mold 200 comprises first die body 22 and second die body 24.Form in first die body 22 in first die cavity, 220, the second die bodys 24 and form second die cavity 240 that is communicated with first die cavity 220.In the present embodiment, it is more coarse with respect to being positioned at second die cavity 240, second mold cavity surface 242 on every side to be positioned at first die cavity 220, first mold cavity surface 222 on every side.First die body 22 is used for moulding first formed body, and second die body 24 is used for moulding second formed body.In the present embodiment, this injection forming mold 200 is the dual-color forming mould, and this injection moulding machine 300 is the double-shot moulding machine.This injection forming mold 200 also comprises the runner 28 that is used for the cast gate 26 of injection moulding machine 300 butt joint, is used to be connected cast gate 26 and first die cavity 220, second die cavity 240.This injection moulding machine 300 comprises the nozzle 32 to the plastic material of injection forming mold 200 injection fusions.
Step 104: please join Fig. 3 and Fig. 4 in the lump, to first plastic material of first die cavity, 220 injection fusions, and cooling forming, to form first formed body 226.At this moment, although first formed body 226 is still smooth inadequately under the influence of the first coarse mold cavity surface 222 towards the first formed body surface 228 of second die cavity 240, this first formed body surface 228 can be more smooth with respect to first mold cavity surface 222.In this step, the nozzle 32 of injection moulding machine 300 is docked with the cast gate 26 of first die body 22, close first die body 22 and second die body 24, first plastic material with fusion injects first die cavity 220 by runner 28 then.When injecting first plastic material, injection forming mold is cooled off, so that the first plastic material cooling forming of fusion.
Step 106: to second plastic material of second die cavity, 240 injection fusions, and cooling forming, on first formed body 226, to form second formed body 246.In the present embodiment, second formed body 246 covers the first formed body surface 228 fully.In this step, injection forming mold 200 is turned over turnback, the cast gate 26 of second die body 24 is docked with nozzle 32, second plastic material with fusion injects second die cavity 240 by runner 28 then.When injecting second plastic material, injection forming mold 200 is cooled off, so that the second plastic material cooling forming of fusion.Behind the second plastic material cooling forming, second formed body 246 and first formed body 226 are combined into plastic cement products 400.This plastic cement products 400 is used to be installed in the device body of (figure does not show), and first formed body 226 is positioned at the body of this device, and expose from body at least a portion surface of second formed body 246.
By on the first formed body surface 228 more smooth, carrying out the injection mo(u)lding second time than first mold cavity surface 222, reduced the influence of the surface smoothness of coarse 222 pairs second formed bodys 246 of first mold cavity surface widely, thereby made the second formed body surface more smooth.In the present embodiment, second plastic material is identical with first plastic material.Be understandable that second plastic material and first plastic material also can be different materials.When second plastic material and first plastic material not simultaneously, preferably, the fusing point of second plastic material is lower than the fusing point of first plastic material, so that second plastic material of fusion can not melt first formed body 226.
Step 108: please join Fig. 5, separately first die body 22 and second die body 24 take out the plastic cement products 400 of moulding.In this step, separately behind first die body 22 and second die body 24, the plastic cement products 400 of moulding is ejected taking-up then.
Compared to common single injection-molded method, above-mentioned injection molding forming method can reduce the influence of coarse molding surface to the outer surface of the plastic cement products of injection mo(u)lding by the quadric injection mould moulding, thereby improves the quality of plastic cement products.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (7)
1. injection molding forming method, it adopts injection forming mold and injection moulding machine to make plastic cement products; This injection forming mold comprises first die body and second die body, forms first die cavity in first die body, forms second die cavity that is communicated with first die cavity in second die body; Described plastic cement products is used to be installed in the body of a device, and described plastic cement products comprises and be positioned at second formed body that expose from body on described intrinsic first formed body and at least a portion surface that described injection molding forming method comprises:
To first plastic material of described first die cavity injection fusion, and cooling forming, to form described first formed body;
To second plastic material of described second die cavity injection fusion, and cooling forming, to form described second formed body at described first formed body on the surface of second die cavity, second formed body and first formed body mutually combine; And
Take out the plastic cement products of moulding.
2. injection molding forming method as claimed in claim 1 is characterized in that, described first plastic material and second plastic material are same material.
3. injection molding forming method as claimed in claim 1 is characterized in that, described first plastic material and second plastic material are different materials.
4. injection molding forming method as claimed in claim 3 is characterized in that the fusing point of described second plastic material is lower than the fusing point of first plastic material.
5. injection molding forming method as claimed in claim 1 is characterized in that, described second formed body covers the surface of first formed body towards second die cavity fully.
6. injection molding forming method as claimed in claim 1 is characterized in that, described injection moulding machine is the double-shot moulding machine.
7. injection molding forming method as claimed in claim 1 is characterized in that the circumferential surface of described first die cavity is more coarse than the circumferential surface of second die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103120038A CN102101345A (en) | 2009-12-22 | 2009-12-22 | Injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103120038A CN102101345A (en) | 2009-12-22 | 2009-12-22 | Injection molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102101345A true CN102101345A (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103120038A Pending CN102101345A (en) | 2009-12-22 | 2009-12-22 | Injection molding method |
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| Country | Link |
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| CN (1) | CN102101345A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770269A (en) * | 2014-01-16 | 2014-05-07 | 深圳市飞荣达科技股份有限公司 | Combined power cover plate and preparation method thereof |
| CN105773907A (en) * | 2016-05-13 | 2016-07-20 | 东莞铭普光磁股份有限公司 | Electronic tag plug of optical fiber connector and injection molding method of electronic tag plug |
| CN112519102A (en) * | 2020-10-28 | 2021-03-19 | 惠州市德威塑胶制品有限公司 | Method for forming bicolor plastic product |
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| CN101380803A (en) * | 2008-10-23 | 2009-03-11 | 东莞毅昌模具制造注塑有限公司 | Injection mold for forming double-layer double-color shell products and injection molding method using the mold |
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- 2009-12-22 CN CN2009103120038A patent/CN102101345A/en active Pending
Patent Citations (9)
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| JPH1015992A (en) * | 1996-07-04 | 1998-01-20 | Kintou Kagaku Kk | Core back injection molding method and its molding |
| CN1182664A (en) * | 1997-10-10 | 1998-05-27 | 温州市凯达眼镜实业公司 | Method for injection moulding plastic nearsight lens |
| CN1460584A (en) * | 2002-05-15 | 2003-12-10 | 岐阜车体工业株式会社 | Casting mould |
| US20040080079A1 (en) * | 2002-10-28 | 2004-04-29 | Teng-Jen Yang | Method for forming a plastic article having two colors and a molding device of the method |
| CN1611340A (en) * | 2003-10-29 | 2005-05-04 | 昆山渝隆精密模具制品有限公司 | Injection moulding method for producing mobile phone keyboard |
| CN1982028A (en) * | 2005-12-12 | 2007-06-20 | 昆山渝榕电子有限公司 | Integrated injection forming method |
| CN101108526A (en) * | 2007-08-17 | 2008-01-23 | 常熟市汽车饰件有限公司 | Double-shot molding method for vehicle internal decoration seat armrest |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770269A (en) * | 2014-01-16 | 2014-05-07 | 深圳市飞荣达科技股份有限公司 | Combined power cover plate and preparation method thereof |
| CN103770269B (en) * | 2014-01-16 | 2016-09-14 | 深圳市飞荣达科技股份有限公司 | A kind of composite power source cover plate and preparation method thereof |
| CN105773907A (en) * | 2016-05-13 | 2016-07-20 | 东莞铭普光磁股份有限公司 | Electronic tag plug of optical fiber connector and injection molding method of electronic tag plug |
| CN105773907B (en) * | 2016-05-13 | 2018-02-06 | 东莞铭普光磁股份有限公司 | A kind of joints of optical fibre electronic tag plug and its injection moulding process |
| CN112519102A (en) * | 2020-10-28 | 2021-03-19 | 惠州市德威塑胶制品有限公司 | Method for forming bicolor plastic product |
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