Figure 10 shows a die-casting machine. The material is supplied from the parts on the left-hand side, into the die on the right hand side.
The supply side has a horizontal cylinder containing the molten metal (the pressure chamber). Fresh liquid is supplied from a funnel-shaped reservoir above this chamber. The plunger is a solid cylinder that pushes the liquid towards the right.
The die contains two parts that join to form the cavity which will be filled with metal. The left part is called the cover die, and it contains a horizontal tube through it (the sprue) that supplies the liquid.
The right-hand part of the die (the ejector die) has two horizontal ejector pins from the cavity through to the outside.
So, the plunger pushes the molten metal through the pressure chamber and sprue, into the cavity.