1. Injection cycle

1.1 Injection cycle sequence

The minimum injection cycle is shown in figure 1 .

To achieve this cycle, the main functions of an injection moulding machine are :

• open and close the mold ;

• lock the mold ;

• inject the molten material into the mould;

• keep the melt under pressure in the cavities;

• eject parts after cooling;

• melt the material.

Starting with plastic in granular form and ending with injection-moulded parts available...