CN101746023A - Injection molding method of integrated hollow plastic spoiler - Google Patents
Injection molding method of integrated hollow plastic spoiler Download PDFInfo
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- CN101746023A CN101746023A CN200810237170A CN200810237170A CN101746023A CN 101746023 A CN101746023 A CN 101746023A CN 200810237170 A CN200810237170 A CN 200810237170A CN 200810237170 A CN200810237170 A CN 200810237170A CN 101746023 A CN101746023 A CN 101746023A
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- medium
- spoiler
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- whole hollow
- plastic
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Abstract
The invention relates to an injection molding method of an integrated hollow plastic spoiler, which is characterized in that a high-pressured medium auxiliary injection molding process is adopted, and the process comprises the following steps: raw material drying, injection machine plasticizing, molten material injection, medium auxiliary hollow molding, pressure retaining cooling, die opening taking and examination boxing. The integrated hollow core layer structure of the product is formed after medium auxiliary molding, and the adopted medium can be high-pressure inert gas, liquid, steam, and the like. In the medium auxiliary injection molding, the high-pressure medium is filled into the core layer of the product through a medium channel and a medium inlet and outlet arranged on a die moving mold, and the core layer position forms an effective cavity, so that the purpose of medium auxiliary injection molding is realized. The method can produce a car plastic spoiler which has the advantages of smooth and full appearance line, good rigidity, light weight and use cost of raw material reducing.
Description
Technical field:
Present technique relates to the making of various car parts, especially relates to the whole hollow medium auxiliary injection forming technology of car plastic spoiler.Belong to vehicles attachment technique field.
Background technology:
Car trunk covers the protrusion that a similar duck shape of tail is installed in the rear end, will block from the air-flow that roof sweeps away and form to the active force that presses down, and this protrusion promptly is called spoiler.High-grade car generally all is equipped with spoiler, to improve the power and the appearance property of car.Spoiler according to the aerodynamic principle design has obtained using widely in developed countries such as America and Europes at present.Spoiler on the market mainly contains two kinds of method moulding now, and a kind of is direct injection mo(u)lding, and the product surface of this kind technological forming is more coarse, and streamline has some setbacks full, and rigidity is relatively poor, and product is heavier, and presentation quality is with whole dynamic relatively poor; Another kind is blow molding, and the product appearance of this kind technological forming is second-rate, and the product wall unevenness is even, normal retain to have remove the vestige of overlap and clout after the product blow molding and cause the product appearance defective serious.Along with the development of Hyundai Motor body lightening, also require more and more lighter to corresponding vehicle body parts; And along with the continuous development of modern aesthetic idea, people require also more and more higher for the presentation quality of automobile.But all exist the deficiency of these aspects at present with the spoiler of direct injection moulding and blow molding.
Technology contents:
The objective of the invention is to overcome at present on the market heavier etc. the deficiency of the relatively poor and weight of the direct outward appearance of injection moulding and blow molding spoiler, provide a kind of and can obviously reduce car spoiler weight, improve its presentation quality, the medium assisted injection molding method of the whole hollow of product sandwich layer.
The object of the present invention is achieved like this: for Heavy Weight and the relatively poor deficiency of presentation quality that overcomes direct injection molding product, must form hollow structure at the sandwich layer of product, be characterized in adopting medium auxiliary injection forming process moulding (this medium can be high-pressure inert gas, liquid, steam etc.), its processing step is:
---raw-material dehumidifying baking material
---raw material add the injector plasticizing
---injector is injected into mold cavity with molten plastic
---the whole hollow molding of product sandwich layer
---the pressurize cooling and shaping
---open mould and take out product
---product finishing check back vanning
The idiographic flow and the parameter of its each step are as follows:
1). the technological process and the relevant parameter of raw material dehumidifying baking material:
Open behind heating power supply, the blower fan → constant temperature setting-up time and record → to be formed behind technological process raw material → send into roasting plant → design temperature
Raw material A BS
Roasting plant can be special-purpose baking box or directly utilizes the dry charging basket of injector
Dehumidifying baking material mode hot air circulation
85～100 ℃ of baking temperatures
Drying time is more than 2 hours
The drying medium air
2). raw material plasticizing charging barrel temperature parameter is set:
One section 225～240 ℃
Two sections 235～250 ℃
Three sections 235～245 ℃
Four sections 230～240 ℃
Five sections 220～230 ℃
Six sections 200～220 ℃
3). the melt injection parameters is set:
Injection pressure 28～32Mpa
Inject time 9～12s
4). the pressure and the time parameter of the whole hollow molding of sandwich layer are set:
Pressure bar time s
3000～4000 8～18
2200～3200 18～25
1800～2800 16～22
1200～2200 12～20
1000～1800 5～15
5). the cooling and shaping time: 100～200s
Present technique is applied to the car spoiler industry with the whole blow molding process of product sandwich layer, the whole hollow of the car spoiler sandwich layer of producing by the auxiliary injection forming process of media such as gas or liquid or steam, the outward appearance streamline is smooth and easy full, good rigidly, product weight is light, the development trend that meets Modern Car has promoted the development of car industry and injection moulding industry.Continuous reduction along with the car price, requirement for the aspects such as material, outward appearance and performance of automobile is more and more higher, adopt the car spoiler of the whole hollow auxiliary injection forming process of product sandwich layer production not only on appearance property, to reach higher requirement, and because the cost of the raw material use the reduction especially product that its hollow structure institute obviously reduces, promoted the competitiveness of this product and whole car.
Description of drawings:
Fig. 1 is spoiler technological process of production figure of the present invention
Fig. 2 is the auxiliary whole hollow injection forming die structure schematic diagram of spoiler medium
Fig. 3 looks schematic diagram for the auxiliary whole hollow injection moulding spoiler master of medium of the present invention
Fig. 4 is the auxiliary whole hollow injection moulding spoiler elevational schematic view of medium of the present invention
Fig. 5 is the A-A cross-sectional schematic (amplification) of Fig. 1
Among the figure: 1. needle-valve order hot runner, 2. assistant formation medium channel, 3. cover half, 4. spoiler product (die cavity), 5. medium is imported and exported, 6. dynamic model, 7. ejector pin of die set is 8. installed cylinder, 9. the whole sandwich layer cavity of product.
Specific embodiment 1:
The auxiliary whole hollow injection moulding process flow process of car spoiler sandwich layer gas is referring to Fig. 1.It is to adopt high-pressure inert gas medium auxiliary injection forming process, and processing step is:
---raw-material dehumidifying baking material
---raw material add the injector plasticizing
---injector is injected into mold cavity with molten plastic
---the sandwich layer that high-pressure inert gas is charged into product carries out whole hollow assistant formation
---the pressurize cooling and shaping
---open mould and take out product
---product finishing check back vanning
Embodiment is: raw material ABS is put into the dry charging basket of injector under 90 ℃ of constant temperature dry 3 hours, enter then in the injector barrel and plastify, plasticizing melt well is through the injector nozzle, the needle-valve order hot runner 1 of mould and be injected into the die cavity 4 of mould, melt stops to inject when closely being full of mold cavity exists side by side soon the high-pressure inert gas medium through the medium channel 2 of mould, medium import and export 5 charge into the sandwich layer of spoiler product 4, continue to promote molten plastic and be full of entire die die cavity 4, sandwich layer at product forms a monoblock type cavity simultaneously, the pressurize of reducing pressure step by step then, removal high-pressure inert gas step by step, until the goods cooling fully, the dynamic model 6 and the cover half 3 of last mould are opened, and product is ejected by the push rod 7 of mould and through finishing and boxing for later use after the assay was approved.
The concrete parameter of its each step is as follows:
1). the relevant parameter of raw material dehumidifying baking material:
90 ℃ of baking temperatures
3 hours drying times
2). raw material plasticizing charging barrel temperature parameter is set:
One section 235 ℃
Two sections 245 ℃
Three sections 240 ℃
Four sections 235 ℃
Five sections 225 ℃
Six sections 210 ℃
3). the melt injection parameters is set:
Injection pressure 31Mpa
Inject time 11s
4). the air pressure of gas assistant formation and time parameter are set:
Air pressure bar time s
3500 10
2800 20
2300 20
1800 15
1500 6
5). the cooling and shaping time: 120s
Specific embodiment 2:
The auxiliary whole hollow injection moulding process flow process of car spoiler sandwich layer oil is referring to Fig. 1.It is to adopt hydraulic oil medium auxiliary injection forming process, and processing step is:
---raw-material dehumidifying baking material
---raw material add the injector plasticizing
---injector is injected into mold cavity with molten plastic
---the sandwich layer that hydraulic oil is charged into product carries out whole hollow assistant formation
---the pressurize cooling and shaping
---open mould and take out product
---product finishing check back vanning
Embodiment is: raw material ABS is put into the dry charging basket of injector under 90 ℃ of constant temperature dry 3 hours, enter then in the injector barrel and plastify, plasticizing melt well is through the injector nozzle, the needle-valve order hot runner 1 of mould and be injected into the die cavity 4 of mould, melt stops to inject when closely being full of mold cavity 4 exists side by side soon the hydraulic oil medium through the medium channel 2 of mould, medium import and export 5 charge into the sandwich layer of spoiler product 4, continue to promote molten plastic and be full of entire die die cavity 4, sandwich layer at product 4 forms a monoblock type cavity simultaneously, the pressurize of reducing pressure step by step then, removal hydraulic oil step by step, until the goods cooling fully, the dynamic model 6 and the cover half 3 of last mould are opened, and product is ejected by the push rod 7 of mould and through finishing and boxing for later use after the assay was approved.
The concrete parameter of its each step is as follows:
1). the relevant parameter of raw material dehumidifying baking material:
90 ℃ of baking temperatures
3 hours drying times
2). raw material plasticizing charging barrel temperature parameter is set:
Seven sections 235 ℃
Eight sections 245 ℃
Nine sections 240 ℃
Ten sections 235 ℃
11 sections 225 ℃
12 sections 210 ℃
3). the melt injection parameters is set:
Injection pressure 31Mpa
Inject time 11s
4). the pressure of oily assistant formation and time parameter are set:
Pressure bar time s
3200 10
2500 20
2000 20
1500 15
1200 6
5). the cooling and shaping time: 120s
Specific embodiment 3:
The auxiliary whole hollow injection moulding process flow process of car spoiler sandwich layer steam is referring to Fig. 1.It is to adopt high steam medium auxiliary injection forming process, and processing step is:
---raw-material dehumidifying baking material
---raw material add the injector plasticizing
---injector is injected into mold cavity with molten plastic
---the sandwich layer that high steam is charged into product carries out whole hollow assistant formation
---the pressurize cooling and shaping
---open mould and take out product
---product finishing check back vanning
Embodiment is: raw material ABS is put into the dry charging basket of injector under 90 ℃ of constant temperature dry 3 hours, enter then in the injector barrel and plastify, plasticizing melt well is through the injector nozzle, the needle-valve order hot runner 1 of mould and be injected into the die cavity 4 of mould, melt stops to inject when closely being full of mold cavity 4 exists side by side soon the high steam medium through the medium channel 2 of mould, medium import and export 5 charge into the sandwich layer of spoiler product 4, continue to promote molten plastic and be full of entire die die cavity 4, sandwich layer at product forms a monoblock type cavity simultaneously, the pressurize of reducing pressure step by step then, removal high steam step by step, until goods 4 coolings fully, the dynamic model 6 and the cover half 3 of last mould are opened, and product is ejected by the push rod 7 of mould and through finishing and boxing for later use after the assay was approved.
The concrete parameter of its each step is as follows:
1). the relevant parameter of raw material dehumidifying baking material:
90 ℃ of baking temperatures
3 hours drying times
2). raw material plasticizing charging barrel temperature parameter is set:
13 sections 235 ℃
14 sections 245 ℃
15 sections 240 ℃
16 sections 235 ℃
17 sections 225 ℃
18 sections 210 ℃
3). the melt injection parameters is set:
Injection pressure 31Mpa
Inject time 11s
4). the air pressure of steam assistant formation and time parameter are set:
Air pressure bar time s
3800 15
3000 23
2500 20
2000 18
1600 12
5). the cooling and shaping time: 180s.
Claims (5)
1. the injection moulding method of a whole hollow plastic spoiler is characterized in that it is to adopt the moulding of high-pressure medium auxiliary injection forming process, and its processing step is:
---raw-material dehumidifying baking material
---raw material add the injector plasticizing
---injector is injected into mold cavity with molten plastic
---the sandwich layer that high-pressure medium is charged into product is assisted hollow molding
---the pressurize cooling and shaping
---open mould and take out product
---product finishing check back vanning is stand-by.
2. the injection moulding method of a kind of whole hollow plastic spoiler according to claim 1 is characterized in that the car plastic spoiler of this method institute moulding is the core structure of whole hollow.
3. according to the injection moulding method of claim 1 and 2 described a kind of whole hollow plastic spoilers, it is characterized in that the employed medium of core structure of the whole hollow of this method moulding car plastic spoiler is a high-pressure inert gas.
4. according to the injection moulding method of claim 1 and 2 described a kind of whole hollow plastic spoilers, it is characterized in that the employed medium of core structure of the whole hollow of this method moulding car plastic spoiler is a highly pressurised liquid, as oil, water etc.
5. according to the injection moulding method of claim 1 and 2 described a kind of whole hollow plastic spoilers, it is characterized in that the employed medium of core structure of the whole hollow of this method moulding car plastic spoiler is a high steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810237170A CN101746023A (en) | 2008-12-22 | 2008-12-22 | Injection molding method of integrated hollow plastic spoiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810237170A CN101746023A (en) | 2008-12-22 | 2008-12-22 | Injection molding method of integrated hollow plastic spoiler |
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| Publication Number | Publication Date |
|---|---|
| CN101746023A true CN101746023A (en) | 2010-06-23 |
Family
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|---|---|---|---|
| CN200810237170A Pending CN101746023A (en) | 2008-12-22 | 2008-12-22 | Injection molding method of integrated hollow plastic spoiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669508A (en) * | 2015-02-03 | 2015-06-03 | 上海诚烨汽车零部件有限公司 | Technology for processing bright decoration panel |
| CN104859116A (en) * | 2015-06-03 | 2015-08-26 | 安徽雷风动力科技有限公司 | Clamping plate for shaping water chamber |
| CN104877250A (en) * | 2015-05-22 | 2015-09-02 | 广州石头造环保科技股份有限公司 | Hollow injection-molded environment-friendly high-inorganic filled chopsticks and preparation process thereof |
| CN104884225B (en) * | 2013-03-28 | 2016-08-24 | 株式会社沙迪克 | Screw position adjusting apparatus |
| CN105965771A (en) * | 2016-05-03 | 2016-09-28 | 江阴标榜汽车部件有限公司 | High molecular material pipeline injection moulding technology |
-
2008
- 2008-12-22 CN CN200810237170A patent/CN101746023A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104884225B (en) * | 2013-03-28 | 2016-08-24 | 株式会社沙迪克 | Screw position adjusting apparatus |
| CN104669508A (en) * | 2015-02-03 | 2015-06-03 | 上海诚烨汽车零部件有限公司 | Technology for processing bright decoration panel |
| CN104877250A (en) * | 2015-05-22 | 2015-09-02 | 广州石头造环保科技股份有限公司 | Hollow injection-molded environment-friendly high-inorganic filled chopsticks and preparation process thereof |
| CN104859116A (en) * | 2015-06-03 | 2015-08-26 | 安徽雷风动力科技有限公司 | Clamping plate for shaping water chamber |
| CN105965771A (en) * | 2016-05-03 | 2016-09-28 | 江阴标榜汽车部件有限公司 | High molecular material pipeline injection moulding technology |
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Open date: 20100623 |