Control method for injection moulding
AssigneeTetra Laval Holdings & Finance S.A.
InventorPeter LINDBERG
Life of this patent
Estimating the term…
Abstract
A control method for an injection moulding system having an extruder, feeding material continuously to an accumulator, portioning material intermittently to an injection device, wherein the control method is configured to drive the extruder at a high speed or at a low speed respectively, the high speed and the low speed defining an extruder speed interval, the method comprising acquiring a value for an actual positional change for the accumulator (ΔPOSACT), comparing the value for the actual positional change (ΔPOSACT) with a predicted value for the positional change (ΔPOSPRED), and adjusting a speed of the extruder based on a result of the comparison.
Claims10
A control method for an injection moulding system having an extruder, feeding material continuously to an accumulator, portioning material intermittently to an injection device, wherein the control method is configured to drive the extruder at a high speed or at a low speed respectively, the high speed and the low speed defining an extruder speed interval, the method comprising:
- acquiring a value for an actual positional change for the accumulator;
- comparing the value for the actual positional change with a predicted value for the positional change;
- and
- adjusting a speed of the extruder based on a result of the comparison.
Dependencies are inferred from the claim text.