Control method of injection molding machine and control device of injection molding machine
AssigneeSumitomo Heavy Industries, Ltd.
InventorsHirotsugu Marumoto, Masahiro Iwahashi, Yutaka Tsutsumi, Kazuya Hiraiwa
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Abstract
A control method of an injection molding machine that molds a molding product including a skin layer and a core layer in a mold unit by injecting a molding material to the mold unit from a nozzle, the control method including controlling, at a starting time of an injection process, a temperature of the molding material used to form the skin layer so as to be higher than a temperature of the molding material used to form the core layer.
Claims6
A control device of an injection molding machine that molds a molding product including a skin layer and a core layer in a mold unit by injecting a molding material to the mold unit from a nozzle, the control device comprising:
- a temperature control part configured to control at least one heater provided separately from the mold unit and attached to a cylinder of the injection molding machine, and using the at least one heater to control a first temperature of the skin layer and a second temperature of the core layer, wherein the molding material forms the core layer which is filled inside the skin layer while forming the skin layer, and the molding material that forms the core layer and the skin layer is the same.
A control device of an injection molding machine, the injection molding machine including a cylinder, a nozzle provided at a tip of the cylinder, a first heater configured to heat the cylinder, and a second heater configured to heat the nozzle, the injection molding machine being configured to mold a molding product including a skin layer and a core layer in a mold unit by injecting a molding material to the mold unit from the nozzle, the control device comprising:
- a temperature control part configured to control a temperature of at least part of the second heater so as to be higher than a temperature of the first heater, both of the first heater and the second heater being provided separately from the mold unit and attached to the cylinder of the injection molding machine, and a first temperature of the skin layer and a second temperature of the core layer, wherein the molding material forms the core layer which is filled inside the skin layer while forming the skin layer, and the molding material that forms the core layer and the skin layer is the same.
Dependencies are inferred from the claim text.