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Plastic Injection Molding Machine - Blog
Plastic injection molding process means under the given conditions,plastic parts can be made by
the injection machine and injection mould.The following are the plastic injection molding process' steps:
Mould clamping and locking in plastic injection molding process
Firstly , themould should be clamped under the condition of high speed and low pressure.When the female mould and male mould become closer , the speed will be lower .In order to lock the mould closely, the pressure will be higher and the speed will be lower.
2.Injection device move forward in plastic injection molding process
The nozzle and the mold runner entrance can be jointed with the pressure ,which can make a good preparation for the injection.
Injection and pressure maintaining in plastic injection molding process
The pressure which screw head act on the melt material called first pressure. The feeding effect by the pressure maintaining can avoid the melt material shrinkage ,it is the second pressure.
Cooling parts and preplastification in plastic injection molding process
In order to shorten the cycle time, the preplastification and the parts cooling can be done at the same time.while the parts cool down by the mould's cool effect , the screw's movement can finish the preplastification process.Usually,the preplastification time is less than cooling time.
The injection device's backward in plastic injection molding process
Whether the injection device back or not is depended on the plastic's process technology.The injection device's backward can avoid lower temperature of the plastic material in nozzle by the long-term contact of the nozzle and mould.
Mould opening and piecework ejector in plastic injection molding process
When the plastic parts cool down ,the mould should be opened , with the function of the ejection system ,the workpiece can be ejected .
Dakumar injection machinery company is a subsidiary company ofSINOGROUPE company .We are the famous injection machine manufacturer and innovator in china .If there are anything we cna do for you please contact me,MISS MAY.
SKYPE:sinomould-16
E-mail:dkm@dakumar.com
MSN：dkm@dakumar.com
Tag: plastic injection molding process of china injection machinethe injection machinethe injection machine china
Time, Pressure and Temperature in Injection Molding--Temperture
There are three factors which are important to the injection molding process. These three factors are time, pressure and temperature. In this passage, we talk about temperature in injection molding.
Temperature
Among all kinds of temperature, extruder barrel temperature, nozzle temperature andmould temperature are the most important three ones during injection molding process.
Extruder barrel temperature
During injection molding process, extruder barrel temperature, nozzle temperature and mould temperature should be controlled carefully. Among these three one, the former two is related to the plasticizing and flowability of plastic while the latter one is related to the flowability and cooling of plastic in injection molding process. Different plastic has different melting point and thermo-decomposed temperature, the injection molding temperature should be kept between them. Usually high temperature means relatively good flowability, which sometimes will lead to overflowing and flash while low temperature equals to relative bad flowablity, which will result in melt line,unfilled parts and ripple in injection molding process.
Nozzle temperature
Generally the nozzle temperature should be lower than the barrel temperature. If the nozzle temperature is too high in injection molding process, melting plastic will drool in nozzle and the plastic will decompose because of high temperature. And if the nozzle pressure is too low, cold material may block the nozzle or may be injected into cavities in injection molding process which will lead to unqualified products.
Mould temperature
Mold temperature is also very important because it can directly impact the flowability, the cooling speed and the performance of plastic products.
If still any questions, please contact Dakuamr Machinery Co., Ltd.
Edited by Cina Zhu
Skype: sinomould-13
MSN: dkm@dakumar.com
E-mail: dkm@dakumar.com/dkm@dakumar.com
Tag: time in injection molding processtemperature in injection molding processpressure in injection molding processinjection molding and timeinjection molding and temperatureinjection molding and pressure
Robot for injection machine can imitate the part function of human upper limb, and it can be controlled automatically to deliver products as arranged.
When the arm of robot falls, the mould in the injection machine will open.
The injection machine ejects products and then sends an ejection signal to the robot.
The robot stretches into the cavity and grabs the products.
Then the robot sprays release agent to the cavity.
Then the robot rises and leaves the cavity.
The robot sends a mould closing signal and then makes theinjection machine closed.
Then the robot lays the products in the assigned position.
After everything has been well done, the robot will back to in situ and prepare for the next action.
sinomould-17Tag: injection machine appropriation manipulatorrobot supplier Chinatop manipulator exporterChinese robot sellerrobot for injection moulding machine
In mould labeling turnkey project
sinomould-14Tag: syringe production lineIML system production linepipe fitting production linePET bottle production lineone stop service supplier
plastic machinery manufacturer & molding machinery china supplier, Dakumar Injection Machinery offers flexible injection molding machines withCE certification. Dakumar offers CE stangard molding machines for European markets.
CE injection machine is more and more popular in nowadays plastic molding field, not only because its more precision machine running than normal injection machine, but also it is more safer during manufacturing which fully protect operators.
Check the below picture of Dakumar CE machine, you can see that CE machine with larger safety door with top closer, also special cover design for nozzle part firmly prevent plastic material spray out during manufacturing. Except these external structures different, oil parts and electronical parts also special designed.
Miss Diana
dkm@dakumar.com
Tag: CE machineCE injection molding machineCE plastic machinerymolding machinery chinaplastic machinery manufacturer supply
Water cap molding line is a mass production line for cap mass production.We could offer you a high efficiency cap production line for different kinds of caps.
Water cap molding line include manufacturing workshop with high speedinjection molding machine,water cap mould,water chiller,autoloader,water supply,air supply and power supply.There also required a technical person for the machine operating.
For the cap with high quantity requirement,sometimes we will suggest use die casting molding instead of multi-cavity cap mould.Die casting molding could help to increase the mass production quantity.
There is huge consuming for the caps and bottles for soft drinkings,as most of the bottles and caps are disposable after the drinking finished.That's why there are large demand for the cap and bottle molding line.If we could reduce the molding cycle time 1s,we could increase the production efficiency 5%-20%.So a good injection molding machine and a well designed cap mould is very important for the cap molding line.
Post by Celina
Email: dkm@dakumar.com
: sinomould.dakumar7
MSN: dkm@dakumar.com
Tag: cap mass production linecap with die castingcap thief ring cutting machinecap injection molding lineairtight cap design
Dakumar machinery Co.,ltd is a Chinese injection machine manufacturer, supplyinjection machine China, is the one of the best China injection machine factory. DKM devoted itself to providing a complete injection molding strategy to meet customer's requirements. In the terms of different requirements, we can help users choose the suitable injection machine China.
We supply 8 series of injection machine China, and now we have developed oil-electricity hybrids injection machine China, is a big breakthrough for DKM in Chinese injection machine manufacture industry. This kind of Chinese injection machine is suitable for high speed and high precisive injection moulding products. Last year, we started one-stop service for new plastic factories built.Our group has grabbed the terrific opportunity to put forward to this service because of that we can supply both injection moulds and injection machine in China, and in last month, we successfully completed one project on that, the client come from Guinea who bought 5 sets new Chinese injection machines to start his plastic factory. No matter what customer’s requirements is, we will try our best to find a fine solution to their problems.
If you are the one who needs Chinese plastic injection moulds, pls contact SinoMould, if you are feel interested in plastic injection machine China, pls contact Dakumar. If you just have the idea to build a new factory ,pls contact me. I will give some tips for how to find the suitable plastic injection moulds or injection machines China.
Post by Joyce 
Email: dkm@dakumar.com/dkm@dakumar.com
Tag: China injection machine supplierChinese injection machineChinese injection machine manufacturerinjection machine companies Chinainjection machine factory China
There are various ofinjection machine producing various of injection products.With the strengthening of environmental protection consciousness,the standard injection machine is improved to servoinjection machine.The servoinjection machine use the high-performance servo dynamic control system,the oil pump as the power source. It has the following advantages:
High energy savings
Under normal operating conditions,compared with conventional hydraulic injection molding machines.energy savings of 20-80% can be achieved.
Molding stability
Compared with conventionalinjection molding machines,repeatability is greatly improved due to servo motor closed-loop control.
Quick response
Featuring a dynamic servo motor with a response time of only 0.05seconds.
Quite operation
The machine runs at much lower noise levels ,particular in low speed applications.
Reliable holding pressure
Compared with traditional hydraulic machine the holding pressure is more stable and does not have limitation.
Better oil temperature stability
The servo system only delivers hydraulic oil as it is needed for the various functions.This prevents unnecessary generation of heat and substantially reduces oil cooling requirements.
DAKUMAR injection machinery company are the servoinjection machine of various specification supplier.If there are anything we can do for you ,please contact me ,MAY.
SKYPE:sinomould-16
E-mail:dkm@dakumar.com
MSN：dkm@dakumar.com
Tag: power save injection mouling machineservo power save injection machine china manufacturerThe power save injection machine chinese makerservo power save injection machine made in chinaThe servo injection machine in china
how to solve charred streaks
When in production, some customer will have meet the problem of charred streaks on the samples. So when appear charred streaks, how to solve charred streaks? Now i will explain to you when appear charred streaks, how to solve charred streaks.
1. Decrease the barrel temperature
2. Check the hot runner temperature and then decrease temperature of the hot runner
3. Adapt small diameter screw
4. Decrease injection speed.
Please according to above methods to solve charred streaks when happen charred streaks.
If you still have the problem of how to solve charred streaks, please feel free to contact me.
Miss Diana
dkm@dakumar.com
Tag: how to solve charred streaksappear charred streakssolve charred streaksdefect anlysis of charred streakscharred streaks on the samplesolve charred streaks when injection
Choose the right type of injection mould
We have many kinds of injection moulding machine ,as PET&PVC injection machine, dual-color injection moulding machine ,clear color change hover-type injection moulding machine,servo power save injection moulding machine and so on,according to you series to select the model.
Can hold the mould in
In there ,we should get the mould size to see if the machine can hold the mould in ,we should know some information about the moulding machine ,as the space between tie-bar,max.mould height and min .mould height and also the rotary table size is suitable enough.
It depends on the moulded part size to confirm the toggle stroke and ejector sroke if can smoothly pick the part out ,the toggle stroke need the more than twice height than the part in the demould direction.and the ejector stork can successfully eject the part.
When inject the plastic,there will form a power to push inside and avoid the mould is opened by the power ,we should choose the enough clamp tonnage machine which should big than the outward power.
How to do it ?it need to analyze the weight of moulded part and the cavity number,we also need to choose the suitable "screw diameter ".
It depends on the screw L/D ratio and injection pressure,they are opposite to each other.
Such as the thinwall products,which need the high speed inject to form a perfect shape.
sinomould-14Tag: chinese injection machien supplierinjection machine maker chinaexport injection machien factoryinjection mahien industry
Dakumar machinery Co.,ltd, is one of most famous plastic injection machinemaking factory in China,suppying suitable plastic injection machine as customers' request and we are good at to find a perfect solution to their problems.
Sometimes, the Clients bought our injection moulds and said there are some problems with the moulds, but we can swear that once the moulds was delivered out of our company ,the quality of the mould should be ensured.In this situation ,you should check your plastic injection machine.So, good injection moulds and plastic injection mahcines is not the only factors which influence the quality of theplastic injection molding prodcuts, A good cooperation between the injection moulds and plastic injection machine is the most important keypoint and an experienced engineer can adjust the plastic injection machine to suit the injection moulds.If the client's company don't have the technicians, we can send our engineers to their company and help clients to adjust the plastic injection machine. Also we can offer technology training and plastic injection molding workshop management training. All in all, we offer not only plastic injection machine ,but a perfect service.
If you want to buy a plastic injection machine without fear of attacks from behind, pls come to contact us. Dakumar maybe is not the best choice ,but must be the most suitable partner for you.
Post by Joyce Liu 
Tag: Plastic injection machine manufacture ChinaChinese injection moulding machine makerChinese plastic molding machine supplierproviding Chinese injection machinery.
PET machine is specialized in producing PET preforms. Our company Dakumar Machinery is a professional PET injection machine maker, it is one of the biggestPET machine making company in China. DKM PET machine, has the special design of screw and barrel.
DKM PET machine screw is 20% larger of standard machine. Large PET machine screw can have bigger injection weight. Large PET machine screw can have good holding pressure impact.. PET machine have high plastiization capacity.
Now Dakumar Machinery has achieve a lot of process inPET machine. Our PET machine win a good reputation all over the world.
If you want to order good quality PET machine, please contact me.
Miss Diana
dkm@dakumar.com
Tag: order PET injection machineChina PET machinePET injection machine makerbuy PET machinePET machine making company
