CN104494082A - Injection molding process of PP plastic smart toilet seat base plate - Google Patents

Injection molding process of PP plastic smart toilet seat base plate Download PDF

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Publication number
CN104494082A
CN104494082A CN201410768892.XA CN201410768892A CN104494082A CN 104494082 A CN104494082 A CN 104494082A CN 201410768892 A CN201410768892 A CN 201410768892A CN 104494082 A CN104494082 A CN 104494082A
Authority
CN
China
Prior art keywords
injection
plastics
injection molding
base plate
preheating
Prior art date
Application number
CN201410768892.XA
Other languages
Chinese (zh)
Inventor
王俊
Original Assignee
上海亚虹模具股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海亚虹模具股份有限公司 filed Critical 上海亚虹模具股份有限公司
Priority to CN201410768892.XA priority Critical patent/CN104494082A/en
Publication of CN104494082A publication Critical patent/CN104494082A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/766Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/77Measuring, controlling or regulating of velocity or pressure of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10Polymers of propylene
    • B29K2023/12PP, i.e. polypropylene

Abstract

The invention provides an injection molding process of a PP plastic smart toilet seat base plate. The injection molding process is characterized by comprising the first step of drying the PP plastics and then preheating to the range of 80-90 DEG C, the second step of performing preheating treatment on an injection molding system and an injection molding die, preheating the injection molding system to the range of 195-215 DEG C, preheating a fixed die in the injection molding die to the range of 60+/-5 DEG C and preheating a movable die to the range of 35+/-5 DEG C, and the third step of adding the PP plastics preheated in the first step to the injection molding system of the second step, heating until the PP plastics are in a molten state, injecting the molten PP plastics into the injection molding die by use of a nozzle, maintaining the pressure for 10-15 seconds under the condition that the first section of maintained pressure is 30+/-5bar, and maintaining the pressure for 4-6 seconds under the condition that the second section of maintained pressure is 10+/-5bar, and then naturally cooling for 25 seconds and demolding to obtain the PP plastic smart toilet seat base plate. The injection molding process of the PP plastic smart toilet seat base plate has the advantages that the process steps are simple and convenient to realize, the molding period and the production cost of the base plate are reduced, and the surface quality and the mechanical properties of the finished product are effectively improved.

Description

A kind of PP plastics Intelligent toilet seat base plate Shooting Technique
Technical field
The present invention relates to a kind of PP plastics Intelligent toilet seat base plate Shooting Technique of injection mo(u)lding.
Background technology
In recent years, rapidly, people are no longer satisfied with the using function of Intelligent toilet seat in Intelligent toilet seat development, to the requirement of its outward appearance and the requirement of environmental protection more and more higher.Because existing Shooting Technique exists certain defect in implementation process, as processing step is complicated, cycle length and high in cost of production defect, the product quality of existing technique is not high simultaneously, particularly during injection moulding PP working of plastics, the size caused due to material behavior is unstable, distortion, the problem of appearance of to reprint books in a reduce format etc. and assembly problem, be difficult to the demand reaching application.
Summary of the invention
The object of this invention is to provide a kind of PP plastics Intelligent toilet seat base plate Shooting Technique, reduce baseplate molding cycle and production cost with simple implementation step, effectively improve the quality of products.
In order to achieve the above object, the invention provides a kind of PP plastics Intelligent toilet seat base plate Shooting Technique, it is characterized in that, comprising:
The first step: be preheating to 80 DEG C-90 DEG C by after the drying of PP plastics;
Second step: carry out the pre-heat treatment to adapted to injection system and injection mold, adapted to injection system is preheating to 195 DEG C-215 DEG C, the cover half in injection mold is preheating to 60 DEG C ± 5 DEG C, dynamic model is preheating to 35 DEG C ± 5 DEG C;
3rd step: the PP plastics after first step preheating are joined in the adapted to injection system of second step, be heated to molten condition, by the PP plastics of melting by nozzle injection in injection mold, described injection process is divided into three phases: first stage injection pressure is 100 ± 5bar, second stage injection pressure is 110 ± 5bar, phase III injection pressure is 90 ± 5bar, two stages are divided to carry out pressurize process afterwards, first stage dwell pressure is 30 ± 5bar, pressurize 10s-15s, second stage dwell pressure is 10 ± 5bar, pressurize 4-6s; Naturally cool 25s, the demoulding, obtain PP plastics Intelligent toilet seat base plate.
Preferably, the first stage of described injection process is expelled to 10% ~ 20% of small product size, injection speed is 110 ~ 115g/s, second stage is expelled to 80% ~ 90% of small product size, injection speed is 230 ~ 250g/s, phase III is expelled to 94% ~ 98% of small product size, and injection speed is 80 ~ 100g/s.
Preferably, in described second step, the preheat temperature of each section of adapted to injection system is: one section of temperature is 210 DEG C ± 5 DEG C, and two sections of temperature are 210 DEG C ± 5 DEG C, and three sections of temperature are 205 DEG C ± 5 DEG C, and four sections of temperature are 205 DEG C ± 5 DEG C, and five sections of temperature are 200 DEG C ± 5 DEG C.
Compared with prior art, the invention has the beneficial effects as follows:
Present invention process step is simply convenient to realize, and reduces molding cycle and the production cost of base plate, effectively raises surface quality and the mechanical property of finished product, not only reach the dimensional requirement needed for assembling, simultaneously the aesthetics height very of product surface.
Accompanying drawing explanation
Fig. 1 is injection mold structure schematic diagram.In figure, 1 is dynamic model, and 2 is product, and 3 is cover half, and 4 is nozzle.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment
As shown in Figure 1, be injection mold structure schematic diagram, product 2 is placed between dynamic model 1 and cover half 3, and nozzle 4 is placed in cover half 3 side.
P plastics Intelligent toilet seat base plate Shooting Technique of the present invention, adopts above-mentioned injection mold, is specially:
(1) drying that 85 DEG C of baking ovens carry out PP plastics 4 hours is utilized.
(2) the pre-heat treatment is carried out to adapted to injection system (extra large sky MA7000) and injection mold, adapted to injection system be preheating to 200 DEG C-210 DEG C, its preheat temperature of each section is: one section of temperature is 210 DEG C, two sections of temperature are 210 DEG C, three sections of temperature are 205 DEG C, four sections of temperature are 205 DEG C, and five sections of temperature are 200 DEG C.Cover half in injection mold is preheating to 60 DEG C, dynamic model is preheating to 35 DEG C;
(3) the PP plastics after preheating are joined in adapted to injection system, be heated to molten condition, by the PP plastics of melting by nozzle injection in injection mold, described injection process is divided into three phases: the first stage is expelled to 15% of small product size, injection pressure is 100 ± 5bar, injection speed is 112g/s, second stage is expelled to 85% of small product size, injection pressure is 110 ± 5bar, injection speed is 240g/s, phase III is expelled to 96% of small product size, injection pressure is 90 ± 5bar, injection speed divides two stages to carry out pressurize after being 90g/s., first stage dwell pressure is under the condition of 30 ± 5bar, pressurize 10s, second stage dwell pressure is under the condition of 10 ± 5bar, pressurize 5s, naturally cool 25s, the demoulding, obtain PP plastics Intelligent toilet seat base plate
Cool time of the present invention is 25s, significantly shortens compared with 35s with the cool time needed for traditional handicraft, reduces molding cycle and the production cost of base plate; The dynamic model of traditional handicraft and cover half mould Wen Douwei 60 DEG C, because base plate structurally has a large cambered surface, two ends are round-corner transitions, define corner effect, two ends heat build-up temperature is high, and medium temperature is low, after product depanning, large cambered surface buckling deformation is large, and impact assembling, volume production qualification rate is only 80%.Present invention process is by dynamic model mould temperature drop to about 35 DEG C, and cover half temperature 60 DEG C is constant, makes product shift to an earlier date cooling and shaping in mould, reduces the after-contraction after depanning, reduce deflection, and existing volume production qualification rate is promoted to 95%.

Claims (3)

1. a PP plastics Intelligent toilet seat base plate Shooting Technique, is characterized in that, comprising:
The first step: be preheating to 80 DEG C-90 DEG C by after the drying of PP plastics;
Second step: carry out the pre-heat treatment to adapted to injection system and injection mold, adapted to injection system is preheating to 195 DEG C-215 DEG C, the cover half in injection mold is preheating to 60 DEG C ± 5 DEG C, dynamic model is preheating to 35 DEG C ± 5 DEG C;
3rd step: the PP plastics after first step preheating are joined in the adapted to injection system of second step, be heated to molten condition, by the PP plastics of melting by nozzle injection in injection mold, described injection process is divided into three phases: first stage injection pressure is 100 ± 5bar, second stage injection pressure is 110 ± 5bar, phase III injection pressure is 90 ± 5bar, two stages are divided to carry out pressurize process afterwards, first stage dwell pressure is 30 ± 5bar, pressurize 10s-15s, second stage dwell pressure is 10 ± 5bar, pressurize 4-6s; Naturally cool 25s, the demoulding, obtain PP plastics Intelligent toilet seat base plate.
2. PP plastics Intelligent toilet seat base plate Shooting Technique as claimed in claim 1, it is characterized in that, the first stage of described injection process is expelled to 10% ~ 20% of small product size, injection speed is 110 ~ 115g/s, second stage is expelled to 80% ~ 90% of small product size, injection speed is 230 ~ 250g/s, and the phase III is expelled to 94% ~ 98% of small product size, and injection speed is 80 ~ 100g/s.
3. PP plastics Intelligent toilet seat base plate Shooting Technique as claimed in claim 1, it is characterized in that, in described second step, the preheat temperature of each section of adapted to injection system is: one section of temperature is 210 DEG C ± 5 DEG C, two sections of temperature are 210 DEG C ± 5 DEG C, three sections of temperature are 205 DEG C ± 5 DEG C, four sections of temperature are 205 DEG C ± 5 DEG C, and five sections of temperature are 200 DEG C ± 5 DEG C.
CN201410768892.XA 2014-12-12 2014-12-12 Injection molding process of PP plastic smart toilet seat base plate CN104494082A (en)

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Application Number Priority Date Filing Date Title
CN201410768892.XA CN104494082A (en) 2014-12-12 2014-12-12 Injection molding process of PP plastic smart toilet seat base plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410768892.XA CN104494082A (en) 2014-12-12 2014-12-12 Injection molding process of PP plastic smart toilet seat base plate

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104960135A (en) * 2015-04-30 2015-10-07 苏州乔布注塑工业有限公司 PP plastic injection molding process
CN105690697A (en) * 2016-03-05 2016-06-22 苏州立创精密模具科技有限公司 Injection molding method of battery shell grid baffle
CN105751466A (en) * 2016-03-05 2016-07-13 苏州立创精密模具科技有限公司 Convex slide injection molding method
CN106113428A (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 PP LGF30 material fronts module
CN106335156A (en) * 2016-09-29 2017-01-18 广西大学 Injection molding process for PP material bumper
CN106696164A (en) * 2017-01-20 2017-05-24 埃维柯塑料科技(安徽)有限公司 PP material part injection molding process for plastic valve
CN107415189A (en) * 2017-08-22 2017-12-01 泉州市万家宝儿童用品股份有限公司 A kind of injection molding process of children dinning chair accessory
CN109109258A (en) * 2017-06-26 2019-01-01 湖南雨创环保工程有限公司 A kind of formula and preparation process of rainwater water storage module
CN110561704A (en) * 2019-10-22 2019-12-13 河源市豪业塑胶五金制品有限公司 Double-injection molding process of plastic product

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CN102407587A (en) * 2010-09-25 2012-04-11 上海浦东美灵塑料制品有限公司 Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell
CN102516642A (en) * 2011-11-23 2012-06-27 安徽宜万丰电器有限公司 Automobile support and manufacturing method thereof
CN102975346A (en) * 2012-12-04 2013-03-20 成都航天模塑股份有限公司 Method and mold for producing engine decoration covers and applications thereof
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
CN103612361A (en) * 2013-11-23 2014-03-05 诸暨市泰昂机械有限公司 Injection molding process
CN103802292A (en) * 2012-11-12 2014-05-21 惠州东风易进工业有限公司 Manufacturing technology method of automobile motor fan housing

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
CN102407587A (en) * 2010-09-25 2012-04-11 上海浦东美灵塑料制品有限公司 Injection molding process for polyphenylene oxide (PPO) plastic air conditioner shell
CN102516642A (en) * 2011-11-23 2012-06-27 安徽宜万丰电器有限公司 Automobile support and manufacturing method thereof
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
CN103802292A (en) * 2012-11-12 2014-05-21 惠州东风易进工业有限公司 Manufacturing technology method of automobile motor fan housing
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104960135A (en) * 2015-04-30 2015-10-07 苏州乔布注塑工业有限公司 PP plastic injection molding process
CN105690697A (en) * 2016-03-05 2016-06-22 苏州立创精密模具科技有限公司 Injection molding method of battery shell grid baffle
CN105751466A (en) * 2016-03-05 2016-07-13 苏州立创精密模具科技有限公司 Convex slide injection molding method
CN105690697B (en) * 2016-03-05 2018-02-27 苏州立创精密模具科技有限公司 Battery case grid baffle plate injection molding forming method
CN106113428A (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 PP LGF30 material fronts module
CN106335156A (en) * 2016-09-29 2017-01-18 广西大学 Injection molding process for PP material bumper
CN106696164A (en) * 2017-01-20 2017-05-24 埃维柯塑料科技(安徽)有限公司 PP material part injection molding process for plastic valve
CN109109258A (en) * 2017-06-26 2019-01-01 湖南雨创环保工程有限公司 A kind of formula and preparation process of rainwater water storage module
CN107415189A (en) * 2017-08-22 2017-12-01 泉州市万家宝儿童用品股份有限公司 A kind of injection molding process of children dinning chair accessory
CN110561704A (en) * 2019-10-22 2019-12-13 河源市豪业塑胶五金制品有限公司 Double-injection molding process of plastic product

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Application publication date: 20150408

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