CN109927270A - A kind of preparation method in blow molding foaming air duct - Google Patents
A kind of preparation method in blow molding foaming air duct Download PDFInfo
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- CN109927270A CN109927270A CN201910165631.1A CN201910165631A CN109927270A CN 109927270 A CN109927270 A CN 109927270A CN 201910165631 A CN201910165631 A CN 201910165631A CN 109927270 A CN109927270 A CN 109927270A
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- air duct
- foaming agent
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- blow molding
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Abstract
The present invention relates to automobile air conditioning technology fields, the especially a kind of preparation method in blow molding foaming air duct, include the following steps；Step 1: prepare material；Step 2: the mixing of plastic pellet and foaming agent；Step 3: being dosed into feeding mechanism；Step 4: heating and melting；Step 5: mixture is foamed；Step 6: mold forms；The present invention can reduce the weight of components, make air duct more lightweight, also reduce the noise that air duct vibration generates during automobile is advanced, ride comfort is improved, the time of foaming is controllable, and pressure size control range is accurate, the prefabricated time can determine, it is controllable to reach technique, production cost is low, high-efficient, be easily industrialized.
Description
Technical field
The present invention relates to the preparation methods in automobile air conditioning technology field more particularly to a kind of blow molding foaming air duct.
Background technique
The automotive energy-saving emission-reducing target that the Chinese government releases in recent years, it is, in general, that vehicle weight is bigger for automobile
The carbon dioxide of more oil consumption, generation is more, therefore the light-weighted demand of automobile is more and more urgent, to mould Dai Gang, improve product
Structure and use light material are one of automotive light weight technology Research approach；
At present for vehicle air conditioner duct, there are following technical problems in air duct: 1) mixture is sent out in accumulator blow moulding machine
The time of bubble is uncontrollable, 2) in mold after pressure size control range when mixture squeezes out is uncertain, 3) mixture squeezes out
The prefabricated time is uncertain in type chamber.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods in blow molding foaming air duct, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the goals above, present invention employs following technical solutions:
The preparation method for designing a kind of blow molding foaming air duct, includes the following steps；
Step 1: prepare material；
Following components including weight percent: plastic pellet 98-99%, foaming agent 1-2%；
Step 2: the mixing of plastic pellet and foaming agent；
Above-mentioned material is weighed using electronic scale, is added in blender stirs 1-2h according to the above ratio, stir material sufficiently
It mixes uniformly；
Step 3: being dosed into feeding mechanism；
The material mixed is added in feeding mechanism by hopper and is transported in accumulator blow moulding machine；
Step 4: heating and melting；
S1, accumulator blow moulding machine screw slenderness ratio is adjusted to 23:1, for adjusting above-mentioned mixing material in material cylinder blow moulding machine
Foamed time；
S2, the motor of equipment is changed to servo motor to adjust the rate stirred in equipment and then control the time；
S3, it mixing material is subjected to sufficient heating and melting obtains mixture A；
Step 5: mixture is foamed；
Y1, mixture A bubble in mold cavity will be ruptured not in mixture A injection mold；
Y2, increase pressure control table before blowing needle above mold, make pressure control between 0.4-0.6bar；
Y3, mold close mode locking, according to the molding time of the size of product control blow molding；
Step 6: mold forms；
Product after molding is removed from the molds modified, trimming and punching.
Preferably, in step 1, the foaming agent is hydrazides foaming agent, dinitroso class foaming agent, azo foaming
Any two kinds of mixture in agent.
Preferably, in step 4, the temperature of the heating and melting is 160-200 DEG C.
Preferably, in step 4, the revolving speed of the screw rod is 200-400r/min.
A kind of preparation method in blow molding foaming air duct proposed by the present invention, beneficial effect are:
1, the present invention can reduce the weight of components, make air duct more lightweight, also reduces air duct during automobile is advanced and shakes
The raw noise of movable property, improves ride comfort；
2, the present invention provides the preparation method of the material, and the time of foaming is controllable, and pressure size control range is accurate, prefabricated
Time is high-efficient, be easily industrialized it was determined that reach that technique is controllable, and production cost is low.
Detailed description of the invention
Fig. 1 is air duct main view of the present invention；
Fig. 2 is air duct bottom view of the present invention；
Fig. 3 is air duct positive structure schematic of the present invention；
Fig. 4 is air duct top view of the present invention.
In figure: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
A kind of embodiment 1, referring to Fig.1-4, the preparation method in blow molding foaming air duct, includes the following steps；
Step 1: prepare material；
Following components including weight percent: plastic pellet 99%, foaming agent 1%；
The foaming agent is the mixture of hydrazides foaming agent, two kinds of dinitroso class foaming agent.
Step 2: the mixing of plastic pellet and foaming agent；
Above-mentioned material is weighed using electronic scale, is added in blender stirs 1.5h according to the above ratio, stir material sufficiently
It mixes uniformly；
Step 3: being dosed into feeding mechanism；
The material mixed is added in feeding mechanism by hopper and is transported in accumulator blow moulding machine；
Step 4: heating and melting；
S1, accumulator blow moulding machine screw slenderness ratio is adjusted to 23:1, for adjusting above-mentioned mixing material in material cylinder blow moulding machine
Foamed time；
S2, the motor of equipment is changed to servo motor to adjust the rate stirred in equipment and then control the time；
S3, it mixing material is subjected to sufficient heating and melting obtains mixture A；
The temperature of the heating and melting is 180 DEG C；
The revolving speed of the screw rod is 350r/min；
Step 5: mixture is foamed；
Y1, mixture A bubble in mold cavity will be ruptured not in mixture A injection mold；
Y2, increase pressure control table before blowing needle above mold, make pressure control in 0.5bar；
Y3, mold close mode locking, according to the molding time of the size of product control blow molding；
Step 6: mold forms；
Product after molding is removed from the molds modified, trimming and punching.
A kind of embodiment 2, referring to Fig.1-4, the preparation method in blow molding foaming air duct, includes the following steps；
Step 1: prepare material；
Following components including weight percent: plastic pellet 98%, foaming agent 2%；
The foaming agent is hydrazides foaming agent, two kinds of azo foaming agent of mixture；
Step 2: the mixing of plastic pellet and foaming agent；
Above-mentioned material is weighed using electronic scale, is added in blender stirs 1.3h according to the above ratio, stir material sufficiently
It mixes uniformly；
Step 3: being dosed into feeding mechanism；
The material mixed is added in feeding mechanism by hopper and is transported in accumulator blow moulding machine；
Step 4: heating and melting；
S1, accumulator blow moulding machine screw slenderness ratio is adjusted to 23:1, for adjusting above-mentioned mixing material in material cylinder blow moulding machine
Foamed time；
S2, the motor of equipment is changed to servo motor to adjust the rate stirred in equipment and then control the time；
S3, it mixing material is subjected to sufficient heating and melting obtains mixture A；
The temperature of the heating and melting is 190 DEG C；
The revolving speed of the screw rod is 330r/min；
Step 5: mixture is foamed；
Y1, mixture A bubble in mold cavity will be ruptured not in mixture A injection mold；
Y2, increase pressure control table before blowing needle above mold, make pressure control in 0.45bar；
Y3, mold close mode locking, according to the molding time of the size of product control blow molding；
Step 6: mold forms；
Product after molding is removed from the molds modified, trimming and punching.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of preparation method in blow molding foaming air duct, it is characterised in that: include the following steps；
Step 1: prepare material；
Following components including weight percent: plastic pellet 98-99%, foaming agent 1-2%；
Step 2: the mixing of plastic pellet and foaming agent；
Above-mentioned material is weighed using electronic scale, is added in blender stirs 1-2h according to the above ratio, stir material sufficiently
It mixes uniformly；
Step 3: being dosed into feeding mechanism；
The material mixed is added in feeding mechanism by hopper and is transported in accumulator blow moulding machine；
Step 4: heating and melting；
S1, accumulator blow moulding machine screw slenderness ratio is adjusted to 23:1, for adjusting above-mentioned mixing material in material cylinder blow moulding machine
Foamed time；
S2, the motor of equipment is changed to servo motor to adjust the rate stirred in equipment and then control the time；
S3, it mixing material is subjected to sufficient heating and melting obtains mixture A；
Step 5: mixture is foamed；
Y1, mixture A bubble in mold cavity will be ruptured not in mixture A injection mold；
Y2, increase pressure control table before blowing needle above mold, make pressure control between 0.4-0.6bar；
Y3, mold close mode locking, according to the molding time of the size of product control blow molding；
Step 6: mold forms；
Product after molding is removed from the molds modified, trimming and punching.
2. a kind of preparation method in blow molding foaming air duct according to claim 1, it is characterised in that: described in step 1
Foaming agent is hydrazides foaming agent, dinitroso class foaming agent, any two kinds of mixture in azo foaming agent.
3. a kind of preparation method in blow molding foaming air duct according to claim 1, it is characterised in that: described in step 4
The temperature of heating and melting is 160-200 DEG C.
4. a kind of preparation method in blow molding foaming air duct according to claim 1, it is characterised in that: described in step 4
The revolving speed of screw rod is 200-400r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165631.1A CN109927270A (en) | 2019-03-06 | 2019-03-06 | A kind of preparation method in blow molding foaming air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165631.1A CN109927270A (en) | 2019-03-06 | 2019-03-06 | A kind of preparation method in blow molding foaming air duct |
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| CN109927270A true CN109927270A (en) | 2019-06-25 |
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| CN201910165631.1A Pending CN109927270A (en) | 2019-03-06 | 2019-03-06 | A kind of preparation method in blow molding foaming air duct |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114379061A (en) * | 2022-01-18 | 2022-04-22 | 浙江吉利控股集团有限公司 | Preparation method of heavy commercial vehicle air inlet channel |
| CN114425895A (en) * | 2022-01-12 | 2022-05-03 | 中国第一汽车股份有限公司 | Environment-friendly composite micro-foaming air duct and production process thereof |
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| CN201093836Y (en) * | 2007-09-21 | 2008-07-30 | 伊莱克斯(中国)电器有限公司 | Air channel structure of blow molding shaping |
| CN106808671A (en) * | 2017-03-02 | 2017-06-09 | 浙江峻和橡胶科技有限公司 | One kind blowing foaming air channel technique and its process equipment |
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| CN106738751A (en) * | 2017-03-07 | 2017-05-31 | 中国科学技术大学 | A kind of blown film apparatus and its experimental technique that structure detection in situ is carried out with X-ray scattering combination |
| CN108641194A (en) * | 2018-03-26 | 2018-10-12 | 南京聚隆科技股份有限公司 | A kind of hollow blow molding fretting map tool box material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425895A (en) * | 2022-01-12 | 2022-05-03 | 中国第一汽车股份有限公司 | Environment-friendly composite micro-foaming air duct and production process thereof |
| CN114379061A (en) * | 2022-01-18 | 2022-04-22 | 浙江吉利控股集团有限公司 | Preparation method of heavy commercial vehicle air inlet channel |
| CN114379061B (en) * | 2022-01-18 | 2024-01-09 | 浙江吉利控股集团有限公司 | Preparation method of heavy commercial vehicle air inlet channel |
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Application publication date: 20190625 |
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