Controlling injection moulding stroke speed - as function of pressure temperature and speed of flow front in mould

摘要

A controller for injection moulding machines, esp. those where the screw is used for plasticising and injection, comprises a pressure meter for reading the pressure in the mould and a control unit for regulating the injection pressure as a function of this. In addition to the pressure meter, one or more additional meters are used for measuring the flow front speed and/or the temperature in the mould; the injection pressure and/or speed, and in particular the advance speed of the screw during injection, are regulated as a function of these readings.