Consideration of the screw injection speed profile in the simulation of the injection moulding process

The screw antechamber and the machine nozzle are now considered in the filling simulation program CADMOULD-3D. The volume flow rate in the gate as input variable of the filling simulation is substituted by the screw stroke and the screw injection speed profile. This corresponds to the machine settings of an injection moulding machine. The output variable of the calculation is now a volume flow rate at the gate developing with time. The volume flow rate at the gate and the volume flow rates inside the mould are very important process parameters determining the process course and the quality of the moulded part. Better simulation results can be expected by considering the screw antechamber and the machine nozzle.