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
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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.
Claims12
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:
- in a single molding cycle,
- controls a range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces to satisfy a predetermined condition, or
- determines whether burrs occur depending on 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:
- in a single molding cycle,
- controls a range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces to satisfy a predetermined condition, or
- determines whether burrs occur depending on the molding material,
- wherein the mold clamping control unit determines that no burrs occur in a case where the actual value of the mold clamping force increases and thereafter decreases and the range of increase becomes equal to or less than a threshold as the molding material reaches the parting surfaces.
A method of controlling an injection molding machine comprising:
- 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:
- in a single molding cycle,
- controlling a range of increase in the actual value of the mold clamping force after the molding material reaches the parting surfaces to satisfy a predetermined condition, or
- determining whether burrs occur depending on the molding material.
Dependencies are inferred from the claim text.