1results about How to "High precision computing" patented technology

An injection molding machine (1) is provided with: an injection device (10) that injects a resin material melted by a heating cylinder (11) in which a screw (20) is arranged inside from a nozzle (12); a mold (75) that is composed of a fixed mold (76) and a movable mold (77) and has a cavity (75a) filled with the resin material; a load cell (60) that detects a pressure acting on the screw (20); and a control device (100) that controls a mold internal pressure; the control device (100) has: a pressure loss acquisition section (111) that acquires, as a pressure loss, the pressure detected by the load cell (60) when the resin material is injected from the nozzle (12) in contact with the fixed mold (76) in a state in which the fixed mold (76) and the movable mold (77) are open; an injection pressure acquisition section (112) that acquires, as an injection pressure, the pressure detected by the load cell (60) when the resin material is injected from the nozzle (12) to the cavity (75a) in a state in which the mold (75) is closed; and a virtual mold internal pressure calculation section (114) that calculates a virtual mold internal pressure V by subtracting the pressure loss from the injection pressure.