Method and device for monitoring, documenting, and/or controlling an injection molding machine
AssigneePriamus System Technologies AG
InventorChristopherus Bader
Life of this patent
Estimating the term…
Abstract
A method for monitoring, documenting, and/or controlling an injection molding machine (P) having an injection molding tool (1) into which a melt is introduced, wherein a viscosity of the melt in the injection molding tool (1) is determined directly.
Claims16
A method for determining the viscosity of a melt in an injection mold of an injection molding machine, comprising the step of determining the viscosity of a melt when in the injection mold as a function of the respective quotients of shear stress and shear rate determined on the basis of pressure differences (Δp), the geometry of the cavity (1.1;
- 9;
- 17;
- 20) and the flow rate (Δt) of the melt.
A device for determining the viscosity of a melt in an injection molding machine wherein at least one mold internal pressure sensor and/or mold wall temperature sensor (10, 11, 18, 21, 22) is provided for establishing a viscosity of a melt in at least one cavity (1.1, 9, 17, 20) of an injection mold (1) of an injection molding machine (P) and can be used for determining the pressure differences that can be ascertained during a phase of injecting the melt into the at least one cavity (1.1, 9, 17, 20) and, by way of the geometry of the at least one cavity (1.1, 9, 17, 20), the respective quotients for the viscosity from the respective shear stresses and shear rates.
Dependencies are inferred from the claim text.