CN106476198B - Bumper assembly injection molding process method - Google Patents
Bumper assembly injection molding process method Download PDFInfo
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- CN106476198B CN106476198B CN201611228827.3A CN201611228827A CN106476198B CN 106476198 B CN106476198 B CN 106476198B CN 201611228827 A CN201611228827 A CN 201611228827A CN 106476198 B CN106476198 B CN 106476198B
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- injection
- cast gate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of bumper assembly injection molding process method.Include: injection molding raw material selection material is PP+EPDM and fills ash content in the talcum powder of 10-20 ‰；Material shrinkage chooses mold shrinkage as reference value, and takes median 1.0%.Carry out the control of technological parameter when injection molding, include to use more cast gate sequential injections: cast gate distributing position for, bumper upper and lower surfaces be it is equidistant be uniformly distributed, and KB limit is set into glue amount to the cast gate of upper and lower surface middle position；Injection process control section includes speed control and pressure control；The constant of mold temperature is kept using cooling-water machine；Barrel is divided into multistage, and medium temperature is high, two sides temperature is successively decreased.The method of the present invention is able to solve in bumper assembly injection moulding process since the factor complexity of after-contraction influence is unstable, and shrinkage degree can not quantify the problem of determining immediately, can be improved the qualification rate of product, improves production efficiency.
Description
Technical field
The present invention relates to injection molding process technical fields, are related specifically to a kind of bumper assembly injection molding work
Process.
Background technique
Automobile front and back end is equipped with bumper, not only there is decoration functions, more importantly absorbs and mitigate foreign impacts power, protection
Vehicle body protects the safety device of vehicle body and occupant safety function.Bumper has safeguard protection, decoration vehicle and improves vehicle
Air dynamic behaviour the effects of.From the safety point of view, automobile occurs to can play a buffer role in when low speed collision accident, before protection
Aftercarriage；It can play the role of certain protection pedestrian when accident occurs with pedestrian.From the appearance point of view, there is dicoration,
Important component as decoration car appearance；Meanwhile there are also certain aerodynamic actions for bumper.With automobile work
In the extensive application of auto industry, bumper also moves towards as a kind of important safety device for the development of industry and engineering plastics
The road of innovation.Automobile front/rear collision bumper will also be pursued and car body moulding other than keeping original defencive function at present
Harmony pursues the lightweight of itself with uniformly.The front/rear collision bumper of car is all made of plastics, and people are known as plastics insurance
Thick stick.The plastics that plastic bumper uses generally use Polyester and polypropylene-based two kinds of materials, using injection moulding legal system
At.
Now, injection molding process improves production efficiency direction and develops, generally in order to improve life towards injection cycle is shortened
Efficiency is produced, is used in injection mold injection moulding process and increases plasticizing capacity, shortens injection time, accelerates template movement speed
Deng, in addition, the improvement in relation to injection mold injection system is also taken, and the improvement of clamping system, the change of cooling efficiency method
It is exactly in order to save time, to shorten the production cycle Deng, purpose, increases yield.
Bumper assembly is because its assembly relation is numerous, and poor, gap in face that surface appearance requires etc. is particularly important,
Required precision is higher, exception occurs and directly contributes unqualified and scrap.In addition assembly relation structure in the face B is even more to require its size smart
Standard, consequence caused by exception occur is assembly difficulty or can not assemble.Tracing it to its cause is, most of bumper skins use
Polypropylene (PP) modified material injection molding, though and the injection molding mouldability of the material is excellent, its it is maximum the disadvantage is that shrink, even if mould
Tool die sinking shrinking percentage control is proper, but subsequent technique change easilys lead to dimensional discrepancy, causes the unqualified and client of batch
Complaint happens occasionally.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, it is total to provide a kind of solution bumper
At, since the factor complexity of after-contraction influence is unstable, shrinkage degree can not quantify the problem of determining immediately, mention in injection moulding process
The qualification rate of high product improves the bumper assembly injection molding process method of production efficiency.
To achieve the goals above, the invention adopts the following technical scheme:
Bumper assembly injection molding process method, which is characterized in that include as follows in injection molding process
Step:
It is molded raw material selection: the material PP+EPDM's and talcum powder (choosing filling ash content in 10-20 ‰) of use
Modified product.Polypropylene PP is a kind of crystalline material, has certain shrinkage, but the molding shrinkage of polypropylene modification material
Small compared with virgin pp, between the substantially 40%--70% of virgin pp, and PP is as crystalline material, the addition of filler and auxiliary agent
Crystallinity directly is destroyed, at different temperature, the speed of crystallization is different, will cause shrinking percentage and there is variation.It was painting
Cheng Zhong, secondary baking can draw the recrystallization of PP, be contracted in 3-5mm twice, therefore for the size of product, existing parameter ratio
It is more.It is shunk caused by pressure maintaining feeding in molding and the after-contraction of depanning all will lead to the fluctuation of size, therefore use 10-
The after-contraction size of the MODIFIED PP material of 20 ‰ fillings is more stable.
The determination of mold die sinking shrinking percentage: the deviation of material shrinkage necessarily causes the size of product bad.For PP+
For EPDM other than the property of material itself, shrinking percentage additionally depend on shape of product, mould structure, injection moulding speed, pressure and
Temperature.The material shrinkage that usual material supplier provides is a range, is referred to if it is some definite value for some shape
Product for, have the reference value of the mold shrinkage of larger process window, take median under normal conditions: such as shrinking percentage
0.95-1.05% takes 1.0%.；
The control of technological parameter, the influence to size of technological parameter is mainly by following aspect:
Using more cast gate sequential injections: in the case where other technological parameters are certain, more cast gate sequence valve opening positions or
The control of time directly results in the variation of product partly or wholly size.Since bumper is mostly more cast gate sequential injections, in this way
The glue amount variation of each cast gate directly results in local size fluctuation, and the entire size of bumper is partially long, it may appear that and return pulley camber goes out,
Fender face difference is higher by, by resetting cast gate, cast gate distributing position are as follows: in bumper upper and lower surfaces is equidistant
KB limit is set into glue amount from being uniformly distributed, and to the cast gate of upper and lower surface middle position, wherein among lower surface
The glue amount of cast gate at position is limited in pressure maintaining again after 200-245mm, and the limitation glue amount of the cast gate of upper surface middle position exists
180mm, cast gate does not participate in pressure maintaining at the position；The cast gate of upper and lower surface middle position can be single cast gate or double cast gate.This
To adjust upper cubing entrucking size into glue amount normal by controlling epidermis middle part position for sample, meets the requirements, vertical to the adjustment of size
Pole is shown in shadow, and analysis volume shrinking percentage can be seen that the colloid compaction rate at intermediate position directly results in the journey of after-contraction on mould stream
Degree.
Injection speed: injection speed has large effect to the surface quality and product size of product.The note of injection molding machine
Penetrating process control section includes speed control and pressure control, wherein and for pressure limit in 70-120bar, speed is divided into four gears,
One gear is the 30-60% of maximum speed, and second gear is 40-the 60% of maximum speed, and three gears are the 20-50% of maximum speed, and four gears are
The 10-30% of maximum speed in injection process, is injected according to speed that the needs of setting choose one of gear.If
Required injection pressure is no more than the injection pressure of setting, and injection process is controlled by the speed of setting, if required pressure
Power is higher than the pressure of setting, and injection process switchs to pressure control by speed control, injection pressure is adjusted until entering and is pressed
Power range, for the injection speed margin of tolerance positive and negative 10%, injection moulding speed is too fast, can be mingled with portion gas during melt flows,
Product surface forms bubble etc., while the consistency decline of product, easy to form deflated and size are less than normal.But if speed
Cross slow, the flowing of melt can be hindered in the injection molding later period, the scarce material in injection process later period easy to form and deflated, while product
Stress is relatively concentrated near cast gate, and stress release after baking may cause local deformation and pressure line, influence appearance and product
Size.Most sensitive to injection pressure in technique in view of polypropylene material, control injection speed appropriate becomes particularly important.
Mold temperature: the constant of mold temperature is kept using cooling-water machine, can be reduced the fluctuation of molding shrinkage, improves ruler
The stability of very little precision.It can be conducive to reduce molding shrinkage using lower mold temperature in the conceived case.Because of mould
Temperature is lower, and crystallinity is low, and lower crystallinity can reduce shrinking percentage.But the low stability for being unfavorable for size of crystallization, from ruler
Very little stability is set out, and needs to properly increase mold temperature, makes product crystallization uniformly, constant mould temperature is conducive to the steady of size
Fixed, for cooling-water machine set temperature usually at 18-25 degrees Celsius, mold surface temperature is more suitable between 25-45 degrees Celsius.
Barrel is divided into multistage by barrel temperature, and according to medium temperature height, the principle successively decreased toward two sides temperature carries out temperature control
System.
In the above scheme, the inspection monitoring of stocking up of raw material, the control of raw material filler ash content ratio, the proportion is without public affairs
Difference is absolute value, and allowable error is thousand/0.05-0.1, can be measured by grey sorting-detecting instrument.
In the above scheme, injecting products weight Weighing control, epidermis weight generally product weight up and down thousand/
Control in four.
In the above scheme, epidermis Data Detection can also be carried out using three coordinate measuring machine, epidermis data is pressed in advance
Mould time time segment of breaking forth measures admission basic data, can 10 minutes according to the time period, 30 minutes, 2 small period measurement notes
Whether the size of molding product is qualified, after 2 bakings, measures respectively again.
In the above scheme, injection time 6-12s, dwell time 6-15s, check the injection molding machine actual act time and
Parameter compares variation or variation it can be seen that process according to this monitoring table and curve table and controlled process card, timely sends out
Existing problem can allow bad elimination in startup stage.
It in the above scheme, further include having die waterway design, uniformity, each position temperature difference are accomplished in die waterway design
Control preferably, if structure design limits, avoids water route Path too long within 5 DEG C as far as possible, and single water route controls within 2m,
All water routes can also be subjected to length combination, length is evenly arranged, and each two groups of active and inactive mold is always into always out, two cooling-water machines are controlled respectively
Brake cover half.
In the above scheme, the barrel is uniformly divided into seven sections, the original toward two sides temperature successively decreased high according to medium temperature
Then, seven sections of temperature range is respectively as follows: 210-240 DEG C of nozzle, and one section 220-240 DEG C, two sections 225-240 DEG C, three sections of 230-
240 DEG C, four sections 210-220 DEG C, five sections 200-210 DEG C, six sections 190-200 DEG C, seven sections 170-190 DEG C, feed opening 80-120
℃。
The method of the present invention has following significant advantage compared with tradition:
The method of the present invention is able to solve in bumper assembly injection moulding process due to the factor complexity of after-contraction influence not
Stablize, shrinkage degree can not quantify the problem of determining immediately, can be improved the qualification rate of product, improve production efficiency.
Detailed description of the invention
Fig. 1 is guarantor's epidermis cast gate sequence bit map/bitmap after the embodiment of the present invention
Fig. 2 is guarantor's epidermis cast gate sequence bit map/bitmap before the embodiment of the present invention
In figure: 1,2,3,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19,20 be the volume of injection gate
Number.
Specific embodiment
It is right below according to specific embodiment and in conjunction with attached drawing in order to be understood the contents of the present invention readily apparent
The present invention is described in further detail.
The product structure design of the present embodiment:, clearance requirement higher position poor for face is fully considered in the design phase
Structure design, to shield its impact effect to greatest extent.
Injection molding raw material selection: the material PP+EPDM and filling ash content that the exterior trims part such as bumper mainly uses exist
The modified product of the talcum powder of 10-20 ‰.The inspection monitoring of stocking up of raw material, the control of raw material filler ash content ratio, the proportion
Zero allowance is absolute value, and allowable error is thousand/0.05-0.1, can be measured by grey sorting-detecting instrument.
Material shrinkage takes median: shrinking percentage 0.95-1.05% takes 1.0%.
The water route of mold design: die waterway designs each position temperature difference and controls within 5 DEG C, the control of single water route 2m with
It is interior.
The control of technological parameter, the influence to size of technological parameter is mainly by following aspect:
Using more cast gate sequential injections: since bumper is mostly more cast gate sequential injections, cast gate distributing position are as follows: insuring
Thick stick upper and lower surfaces be it is equidistant be uniformly distributed, injection time 6-12s, dwell time 6-15s, as shown in Figure 1
Protecting epidermis afterwards is 9 points into glue, and the glue amount variation of cast gate each in this way directly results in local size fluctuation, the entire ruler of bumper
It is very little partially long, it may appear that return pulley camber goes out, and fender face difference is higher by, and No. 3 cast gate glue amounts are limited in 200mm by technological parameter, and 4
Number cast gate glue amount is limited in 240mm, limits pressure maintaining again after glue amount, for No. 7 cast gates limitation glue amounts in 180mm, No. 7 cast gates do not participate in guarantor
Pressure.
The preceding adjustment method for protecting epidermis is also in this way, protecting epidermis before as shown in Figure 2 is 10 points into glue, by technological parameter by 18
Number cast gate glue amount is limited in 220mm, limits pressure maintaining again after glue amount, for No. 13 cast gates limitation glue amounts in 180mm, No. 13 cast gates do not participate in guarantor
Pressure.
Injection speed: the injection process control section of injection molding machine includes speed control and pressure control, wherein pressure model
It is trapped among 70-120bar, speed is divided into four gears, and a gear is the 30-60% of maximum speed, and second gear is 40-the 60% of maximum speed, three
Gear is the 20-50% of maximum speed, and four gears are the 10-30% of maximum speed, in injection process, is chosen wherein according to the needs of setting
One gear speed injected.If required pressure is higher than the pressure of setting, injection process is switched to press by speed control
Power control injection pressure is adjusted until entering pressure limit, the injection speed margin of tolerance is within positive and negative 10%.
Mold temperature: the constant of mold temperature is kept using cooling-water machine, cooling-water machine set temperature is at 20 degrees Celsius, mold
Surface temperature is more suitable at 30 degrees Celsius.
Barrel is uniformly divided into seven sections by barrel temperature, according to medium temperature height, the principle successively decreased toward two sides temperature, and seven sections
Temperature be respectively as follows: 210-240 DEG C of nozzle, one section 220-240 DEG C, two sections 225-240 DEG C, three sections 240 DEG C of 230-, four sections
210-220 DEG C, five sections 200-210 DEG C, six sections 190-200 DEG C, seven sections 170-190 DEG C, 80-120 DEG C of feed opening.
Epidermis Data Detection can also be carried out using three coordinate measuring machine after injection, in advance to epidermis data according to out
Mould time time segment measures admission basic data, 10 minutes according to the time period, 30 minutes, 2 small periods measurement injecting products
Size it is whether qualified, 2 times baking after, measure respectively again.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection scope.
Claims (5)
1. bumper assembly injection molding process method, which is characterized in that during injection molding process, including just like
Lower step:
Be molded raw material selection: the material used is PP+EPDM and fills ash content in the talcum powder of 10-20 ‰；
The determination of mold die sinking shrinking percentage: mold is opened shrinking percentage using material shrinkage as reference value, with material shrinkage
0.95-1.05% takes median 1.0%；
The control for carrying out technological parameter when injection molding, includes following content:
Use more cast gate sequential injections: cast gate distributing position for, bumper upper and lower surfaces be it is equidistant uniformly point
Cloth, and KB limit is set into glue amount to the cast gate of upper and lower surface middle position, wherein lower surface middle position
The glue amount of cast gate is limited in pressure maintaining again after 200-245mm, and the glue amount of the cast gate of upper surface middle position is limited in 180mm, should
Cast gate does not participate in pressure maintaining at position；The cast gate of upper and lower surface middle position is single cast gate or double cast gate；
Injection speed: injection process control section includes speed control and pressure control, wherein pressure limit is in 70-
120bar, speed are divided into four gears, and a gear is the 30-60% of maximum speed, and second gear is the 40-60% of maximum speed, and three gears are highest
The 20-50% of speed, four gears are the 10-30% of maximum speed；In injection process, one of gear is chosen according to the needs of setting
Speed injected；If required injection pressure be no more than setting injection pressure, injection process by setting speed into
Row control, if required pressure is higher than the pressure of setting, injection process switchs to pressure control by speed control, by injection pressure
It is adjusted until entering pressure limit, the injection speed margin of tolerance is positive and negative 10%；
Mold temperature: the constant of mold temperature is kept using cooling-water machine, cooling-water machine temperature is set in 18-25 DEG C, die surface temperature
Degree is set in 25-45 DEG C；
Barrel is divided into seven sections by barrel temperature, according to medium temperature height, the principle successively decreased toward two sides temperature, and temperature range difference
Are as follows: 210-240 DEG C of nozzle, one section 220-240 DEG C, two sections 225-240 DEG C, three sections 230-240 DEG C, four sections 210-220 DEG C, five sections
200-210 DEG C, six sections 190-200 DEG C, seven sections 170-190 DEG C, 80-120 DEG C of feed opening.
2. bumper assembly injection molding process method as described in claim 1, it is characterised in that: in injection molding raw material
In selection, it is thousand/0.05-0.1 that raw material, which fill ash content ratio control error, and is measured by grey sorting-detecting instrument.
3. bumper assembly injection molding process method as described in claim 1, it is characterised in that: surveyed using three coordinates
Amount machine carries out epidermis Data Detection, measures admission basic data according to depanning time time segment to epidermis data in advance,
10 minutes according to the time period, 30 minutes, the size of 2 small periods measurement injecting products it is whether qualified, after 2 bakings, again respectively into
Row measurement.
4. bumper assembly injection molding process method as described in claim 1, it is characterised in that: in injection moulding process
In, injection time 6-12s, dwell time 6-15s.
5. bumper assembly injection molding process method as described in claim 1, it is characterised in that: further include having mold
Water route design, within 5 DEG C, single water route controls within 2m each position temperature difference control of die waterway, two cooling-water machine difference
Control active and inactive mold.
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| CN106881808A (en) * | 2017-03-20 | 2017-06-23 | 重庆佳速汽车零部件有限公司 | A kind of automobile closes the Shooting Technique control method of heavy plastics part |
| JP6474448B2 (en) | 2017-04-07 | 2019-02-27 | ファナック株式会社 | Injection molding system |
| CN113524605B (en) * | 2021-06-23 | 2023-06-23 | 卡奥斯模具(青岛)有限公司 | Method and device for setting technological parameters of injection molding machine |
| CN114290631B (en) * | 2021-12-28 | 2024-04-16 | 武汉燎原模塑有限公司 | Injection molding test process and investigation method for automobile bumper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125816A (en) * | 1984-07-16 | 1986-02-04 | Tsuoisu Kk | Injection molding method and injection molding machine |
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| CN1296440A (en) * | 1998-02-12 | 2001-05-23 | 莫尔德弗洛有限公司 | Automated molding technology for thermoplastic injection molding |
| CN103192483A (en) * | 2013-04-25 | 2013-07-10 | 江苏洪昌科技股份有限公司 | Injection molding process of PP (polypropylene) front bumper |
| CN103756154A (en) * | 2014-01-22 | 2014-04-30 | 深圳市科聚新材料有限公司 | Polypropylene composite and preparation method thereof |
| CN105799118A (en) * | 2016-05-25 | 2016-07-27 | 山东时风（集团）有限责任公司 | Manufacturing method for large-section electric vehicle bumper and forming mold used for large-section electric vehicle bumper |
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