Table of Contents
Which parameters are fixed before starting injection Moulding?
The process parameters such as cycle time, fill time, cooling time, injection time, injection speed, injection pressure, holding pressure, melting temperature, mould temperature and so on need to be optimized in order to produce finished plastic parts with good quality.
How do I start injection molding?
In layman’s terms, injection molding boils down to four simple steps:
- Melt material.
- Inject the molten material into a mold.
- Let the molten material cool to a solid state.
- Remove the hardened material from the mold.
What are the main safety hazards when working with an injection molding machine?
Accident reports of CSST (the province’s occupational safety and health commission) indicate that this industry occasionally experiences incidents involving injection molding machines. The types of injuries reported range from small cuts, burns, avulsions, amputations, fractures, sprains and electric shocks to deaths.
What is plastic Mould temperature?
A common range typically lies between 300 and 800°F (149 and 426°C). The temperature maintained in the mold is equally as important as the temperature profile in the barrel. The mold is maintained at a lower temperature than the barrel to allow the plastic to cool.
How injection molding process works?
The injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. The plastic is melted in the injection molding machine and then injected into the mold, where it cools and solidifies into the final part.
How to set up the injection molding machine?
Injection Mold Setup. First, the initial setting, this is done during the clamping of the mold when the injection molding machine is closed to make the clamping of the mold on the fixed machine plate possible. Second, the final setting, after the mold heater/ cooling is connected and the injection mold reached the required process…
How to maintain the plastic injection mold?
During closing of the injection mold make sure that that all the connection on the mold, injection mold heater and safety connections have enough slack and not wear during opening and closing of the plastic injection mold.
How do I check the ejector safety sensor during injection mold setup?
Connect and check the ejector safety sensor during injection mold setup before you close the mold for the mold height setting. Check the working of the sensor by placing a small piece of paper between the mold plate and ejector plate, if the sensor is working correctly the injection mold will not close.
What are the risks of injection molding?
The risk of mold damage by wrong operation or failing of the injection mold is high; To reduce the risk core pull molds must be equipped with position sensors, to use the core pull option the injection molding machine must be equipped with a core pull program.