CN102407587A - Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell - Google Patents
Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell Download PDFInfo
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- CN102407587A CN102407587A CN2010102912441A CN201010291244A CN102407587A CN 102407587 A CN102407587 A CN 102407587A CN 2010102912441 A CN2010102912441 A CN 2010102912441A CN 201010291244 A CN201010291244 A CN 201010291244A CN 102407587 A CN102407587 A CN 102407587A
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Abstract
The invention discloses an injection molding process for a polyphenylene oxide (PPO) plastic air conditioner shell. The process comprises the following steps of: (1) pretreating a raw material; (2) pretreating an injection molding system and an injection mold; (3) plasticizing; (4) injecting; (5) keeping pressure; (6) cooling for molding; and (7) demolding. The process is simple in implementation steps, the molding cycle is effectively shortened, and production cost is effectively reduced; meanwhile, the quality of a finished product prepared by the process is effectively improved through corresponding process conditions.
Description
Technical field
The present invention relates to the injection moulding field, be specifically related to a kind of Shooting Technique.
Background technology
Injection moulding is a kind of method of industrial products production moulding.Product uses rubber injection mold and plastic injection-moulded usually.Injection moulding also can divide the injection mo(u)lding die pressing. and casting die.Injection (mo(u)lding) machine (being called for short injector or injection machine) is to utilize mould for plastics to process the main former of the plastic products of different shape thermoplastic or thermosetting material, and injection moulding realizes through injection machine and mould.
For satisfying the aesthetic requirement of consumer for the air-conditioner housing outward appearance, simultaneously also for environmental protection more, adopting the spraying-free high-surface gloss traceless injection molding technology to produce air-conditioner housing becomes main flow day by day.The generation of this technology and development be unable to do without the continuous development and the innovation of plastics forming technique, have contained many aspects such as glazed plastic material, high-gloss injection mold, mould temperature temperature control device.
In recent years, people no longer are satisfied with the function of use of air-conditioning, and are increasingly high to the appreciation taste and the requirements of green environmental protection of its outward appearance.Because traditional injection moulding process is first injection moulding air-conditioner housing; And then the method for spraying, neither environmental protection, quality is also unstable; Numerous international and domestic well-known manufacturers have abandoned out-of-date methods one after another, then adopt a kind of novel forming technology---the spraying-free high-surface gloss traceless injection molding technology.This technology can make air-conditioner housing surface gloss height and defectives such as weldless line, current mark and shrink mark, and need not follow-up spraying process, thereby reduces very favourable to environmental protection and cost.Be unable to do without closely cooperating of glazed plastic material, high-gloss injection mold, mould temperature temperature control device and injection machine and Shooting Technique owing to exempt to spray the enforcement of high light beam molding technology.
But also there is certain defective in existing Shooting Technique in implementation process, and like defectives such as processing step complicacy, cycle length and cost height, the end product quality of existing technology is not high simultaneously, is difficult to meet people's requirements of making.
Summary of the invention
The present invention is in order to solve the existing existing defective of Shooting Technique; And a kind of novel injection molding process is provided, this process implementing step is simple, effectively reduces molding cycle and production cost; Through corresponding technological conditions, effectively improve the end product quality of this technology simultaneously.
In order to achieve the above object, the present invention adopts following step:
A kind of PPO plastics air-conditioner housing Shooting Technique, this technology is implemented based on corresponding adapted to injection system and injection mold, and said technology comprises the steps:
(1) pretreatment of raw material: utilize baking oven that the PPO plastics are carried out 3 hours drying, and the PPO plastics are heated to 75 ℃-95 ℃;
(2) adapted to injection system and injection mold preliminary treatment: the barrel in the adapted to injection system is heated to 200 ℃-260 ℃, and the hot flow path in the adapted to injection system is heated to 230 ℃-260 ℃; Cover half in the injection mold is heated to 65 ℃-75 ℃, and dynamic model is heated to 45 ℃-55 ℃;
(3) plasticizing: the good PPO plastics of step (1) preliminary treatment are added in the barrel that step (2) is handled, be heated to molten condition;
(4) injection: the PPO plastics of molten condition are expelled in the heated mould through the nozzle through the hot flow path of step (2) processing, and injection pressure is 100kg/cm
2-120kg/cm
2
(5) pressurize: carry out pressurize through even injection;
(6) cooling forming: the time of cooling forming is 38s;
(7) demoulding: demoulding while hot.
Carry out pressurize in the said step (5) and be divided into three phases: the pressure of phase I pressurize is 67kg/cm
2, the dwell time is 2s; The pressure of second stage pressurize is 77kg/cm
2, the dwell time is 3s; The pressure of phase III pressurize is 86kg/cm
2-105kg/cm
2, the dwell time is 5-8s.
The Shooting Technique that obtains according to technique scheme has the following advantages:
(1) this processing step simply is convenient to realize;
(2) save material, reduce cost;
(3) shorten molding cycle, improve machine efficiency;
(4) improve products surface quality and mechanical property;
(5) improve automaticity;
(6) improve injection-molded item surface aesthetic degree.
Description of drawings
Further specify the present invention below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 is a flow chart of the present invention;
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Injection molding process provided by the invention can be used for the injection mo(u)lding of air-conditioner housing, and it is implemented based on corresponding adapted to injection system and injection mold.
Adapted to injection system among the present invention is to utilize TOP-TIP to carry out injection moulding, and is directed against the design feature of air-conditioner housing, and the hot flow path work point among the present invention is 21 groups.
And injection mold mainly is made up of dynamic model and cover half.
To above-mentioned situation, the practical implementation of its Shooting Technique is (referring to Fig. 1) as follows:
(1) pretreatment of raw material
This step utilizes baking oven that the PPO plastics are carried out 3 hours drying, and the PPO plastics are heated to 75 ℃-95 ℃.
(2) injection machine and mould preliminary treatment
Barrel in the adapted to injection system has 7, and all barrels are carried out heat treated, makes each barrel reach corresponding temperature (temperature difference is ± 10 ℃) respectively:
1、225℃；2、245℃；3、250℃；4、250℃；5、235℃；6、225℃；7、210℃。
21 groups of hot flow paths are heated to corresponding temperature (temperature difference is ± 10 ℃) respectively
1、250℃；2、250℃；3、250℃；4、250℃；5、250℃；6、250℃；7、250℃；8、250℃；9、250℃；10、250℃；11、250℃；12、250℃；13、250℃；14、240℃；15、240℃；16、240℃；17、240℃；18、240℃；19、240℃；20、240℃；21、240℃。
Fixed half and moving half in the injection mold is heated to corresponding temperature (temperature difference is ± 5 ℃) respectively:
Cover half is 70 ℃; Dynamic model is 50 ℃.
(3) plasticizing:
The good PPO plastics of step (1) preliminary treatment are added in the barrel that step (2) is handled, be heated to molten condition.
(4) injection:
The PPO plastics of the molten condition nozzle through the hot flow path handled through step (2) is expelled in the heated mould, and the injection moulding in this step is divided into 6 stages:
The phase I injection pressure is 115kg/cm
2
The second stage injection pressure is 120kg/cm
2
The phase III injection pressure is 115kg/cm
2
The stage injection pressure is 108kg/cm
2
The five-stage injection pressure is 100kg/cm
2, and time that should the stage be 10s;
The 6th stage injection pressure is 40kg/cm
2
(5) pressurize:
Carry out pressurize through even injection, and this pressurize operation is divided into three phases:
The pressure of phase I pressurize is 67kg/cm
2, the dwell time is 2s;
The pressure of second stage pressurize is 77kg/cm
2, the dwell time is 3s;
The pressure of phase III pressurize is 86kg/cm
2-105kg/cm
2, the dwell time is 5-8s.
(6) cooling forming:
The time of cooling forming is 38s.
(7) demoulding:
The stripping means of this step is a demoulding while hot.
Form the injection moulding operation by such scheme, its whole molding cycle is 102s.So effective shortening product molding cycle and saving plastic raw materials.
After above-mentioned injection moulding, can check and packaging process goods:
(1) visual examination is checked the outward appearance of product, and requirement of products is an indispensable material, cracked; Can not have that material is spent, reprinted books in a reduce format, scratch, impression of the hand, stain, bad phenomenon such as vaporific;
(2) diaphragm pastes and pays: the diaphragm of usefulness is done the protection subsides to the glassy surface of housing and is paid, and the remaining standard of diaphragm is about 1cm, and it is accurately smooth to paste benchmark.
The air-conditioner housing goods that form through technology provided by the invention have favorable surface quality and mechanical property; The aesthetics height very of product surface can reach required quality of item requirement simultaneously.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. PPO plastics air-conditioner housing Shooting Technique, this technology is implemented based on corresponding adapted to injection system and injection mold, it is characterized in that, and said technology comprises the steps:
(1) pretreatment of raw material: utilize baking oven that the PPO plastics are carried out 3 hours drying, and the PPO plastics are heated to 75 ℃-95 ℃;
(2) adapted to injection system and injection mold preliminary treatment: the barrel in the adapted to injection system is heated to 200 ℃-260 ℃, and the hot flow path in the adapted to injection system is heated to 230 ℃-260 ℃; Cover half in the injection mold is heated to 65 ℃-75 ℃, and dynamic model is heated to 45 ℃-55 ℃;
(3) plasticizing: the good PPO plastics of step (1) preliminary treatment are added in the barrel that step (2) is handled, be heated to molten condition;
(4) injection: the PPO plastics of molten condition are expelled in the heated mould through the nozzle through the hot flow path of step (2) processing, and injection pressure is 100kg/cm
2-120kg/cm
2
(5) pressurize: carry out pressurize through even injection;
(6) cooling forming: the time of cooling forming is 38s;
(7) demoulding: demoulding while hot.
2. a kind of PPO plastics air-conditioner housing Shooting Technique according to claim 1 is characterized in that carry out pressurize in the said step (5) and be divided into three phases: the pressure of phase I pressurize is 67kg/cm
2, the dwell time is 2s; The pressure of second stage pressurize is 77kg/cm
2, the dwell time is 3s; The pressure of phase III pressurize is 86kg/cm
2-105kg/cm
2, the dwell time is 5-8s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010291244.1A CN102407587B (en) | 2010-09-25 | 2010-09-25 | Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010291244.1A CN102407587B (en) | 2010-09-25 | 2010-09-25 | Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell |
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| CN102407587A true CN102407587A (en) | 2012-04-11 |
| CN102407587B CN102407587B (en) | 2014-03-05 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173027A (en) * | 2011-01-08 | 2011-09-07 | 王�忠 | Injection molding device and process for injection molding of highlight injection molded part with metallic taste by utilizing same |
| CN103538201A (en) * | 2012-07-17 | 2014-01-29 | 贵州华昌群建模塑有限公司 | Assisting type steam highlight traceless injection moulding process of front housing of large-size LED (Light Emitting Diode) television |
| CN104494082A (en) * | 2014-12-12 | 2015-04-08 | 上海亚虹模具股份有限公司 | Injection molding process of PP plastic smart toilet seat base plate |
| CN104669573A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Injection molding method of plastic food steamer |
| CN105563781A (en) * | 2015-12-30 | 2016-05-11 | 苏州乔布注塑工业有限公司 | Injection molding process for plastic composite material |
| CN106079234A (en) * | 2016-06-24 | 2016-11-09 | 芜湖恒信汽车内饰制造有限公司 | A kind of PA GF30 material is coated with the front-end module Shooting Technique of panel beating |
| CN106113429A (en) * | 2016-06-27 | 2016-11-16 | 芜湖恒信汽车内饰制造有限公司 | A kind of Shooting Technique of PP LGF30 material battery carrier |
| CN106113379A (en) * | 2016-06-24 | 2016-11-16 | 芜湖恒信汽车内饰制造有限公司 | A kind of Shooting Technique of PA GF30 material radiator bearer |
| CN109109259A (en) * | 2018-07-27 | 2019-01-01 | 上海浦东美灵塑料制品有限公司 | A kind of modified air-conditioner housing injection molding process |
| CN109130062A (en) * | 2018-07-27 | 2019-01-04 | 上海浦东美灵塑料制品有限公司 | A kind of improved washing machine cover board injection molding process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173027A (en) * | 2011-01-08 | 2011-09-07 | 王�忠 | Injection molding device and process for injection molding of highlight injection molded part with metallic taste by utilizing same |
| CN103538201A (en) * | 2012-07-17 | 2014-01-29 | 贵州华昌群建模塑有限公司 | Assisting type steam highlight traceless injection moulding process of front housing of large-size LED (Light Emitting Diode) television |
| CN104669573A (en) * | 2013-11-28 | 2015-06-03 | 上海杰事杰新材料(集团)股份有限公司 | Injection molding method of plastic food steamer |
| CN104494082A (en) * | 2014-12-12 | 2015-04-08 | 上海亚虹模具股份有限公司 | Injection molding process of PP plastic smart toilet seat base plate |
| CN105563781A (en) * | 2015-12-30 | 2016-05-11 | 苏州乔布注塑工业有限公司 | Injection molding process for plastic composite material |
| CN106079234A (en) * | 2016-06-24 | 2016-11-09 | 芜湖恒信汽车内饰制造有限公司 | A kind of PA GF30 material is coated with the front-end module Shooting Technique of panel beating |
| CN106113379A (en) * | 2016-06-24 | 2016-11-16 | 芜湖恒信汽车内饰制造有限公司 | A kind of Shooting Technique of PA GF30 material radiator bearer |
| CN106113429A (en) * | 2016-06-27 | 2016-11-16 | 芜湖恒信汽车内饰制造有限公司 | A kind of Shooting Technique of PP LGF30 material battery carrier |
| CN109109259A (en) * | 2018-07-27 | 2019-01-01 | 上海浦东美灵塑料制品有限公司 | A kind of modified air-conditioner housing injection molding process |
| CN109130062A (en) * | 2018-07-27 | 2019-01-04 | 上海浦东美灵塑料制品有限公司 | A kind of improved washing machine cover board injection molding process |
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