What Is injection mould?
Injection moulding (or injection molding) is a manufacturing process used to produce plastic parts in high volumes. It involves injecting molten plastic material into a custom-designed mold (or mould), where it cools and solidifies into the desired shape. The mold itself is a precision tool, typically made of hardened steel or aluminum, that defines the geometry, surface texture, and dimensions of the final product.
Key Components of an Injection Mould:
1.Cavity & Core:
The cavity forms the outer shape of the part.
The core creates internal features (e.g., holes, hollow sections).
2.Runner System:
Channels that deliver molten plastic from the injection machine nozzle to the mould cavities.
3.Cooling System:
Channels for circulating coolant to solidify the plastic quickly and evenly.
4.Ejection System:
Pins or plates that push the solidified part out of the mould after cooling.
5.Vents:
Small gaps to allow air to escape during injection, preventing defects like bubbles.
How It Works (Simplified):
Melting: Plastic pellets are heated until molten.
Injection: The molten plastic is forced into the mould under high pressure.
Cooling: The plastic cools and hardens inside the mould.
Ejection: The mould opens, and the finished part is removed.
Repeat: The cycle repeats for mass production.