Control device of injection molding machine, injection molding machine, and method of controlling injection molding machine
AssigneeSumitomo Heavy Industries, Ltd.
InventorsYutaka TSUTSUMI, Daigo HOTTA, Shun SHIBUYA, Yuki MATSUI
Life of this patent
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Abstract
A technique for suppressing molding defects is provided. A control device of an injection molding machine includes: a mold clamping control unit that controls, with respect to an actual value of a mold clamping force for pressing a stationary mold and a movable mold after pressurizing of the mold clamping force is completed and before a molding material reaches parting surfaces of the stationary mold and the movable mold, a range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces to an upper limit or less.
Claims8
A control device of an injection molding machine comprising:
- a mold clamping control unit that, with respect to an actual value of a mold clamping force for pressing a stationary mold and a movable mold after pressurizing of the mold clamping force is completed and before a molding material reaches parting surfaces of the stationary mold and the movable mold,
- controls a range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces to be equal to or less than an upper limit value, wherein the upper limit value is set or corrected according to a selected molding material or a selected viscosity of the molding material.
A control device of an injection molding machine comprising:
- a mold clamping control unit that, with respect to an actual value of a mold clamping force for pressing a stationary mold and a movable mold after pressurizing of the mold clamping force is completed and before a molding material reaches parting surfaces of the stationary mold and the movable mold,
- based on a first range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces in one molding cycle,
- before an injection process of a subsequent molding cycle performed after completion of the one molding cycle starts,
- either controls a second range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces in another molding cycle to satisfy a predetermined condition, or determines whether burrs occur depending on the molding material.
Dependencies are inferred from the claim text.