MUMBAI, India, Sept. 14 -- Intellectual Property India has published a patent application (202617060741 A) filed by Shibaura Machine Co. , Ltd. on May 13, 2026, for Injection Molding Machine And Method For Detecting Mold Internal Pressure.
Inventors include Hatta, Yuta; Matsubayashi, Haruyuki; and Yamaishi, Shouhei.
The application for the patent was published on September 11, 2026, under issue no. 37/2026.
Abstract: An injection molding machine (1) comprises: an injection device (10) that injects, from a nozzle (12), a resin material that has been melted in a heating barrel (11) inside of which a screw (20) is disposed; a mold (75) that comprises a fixed mold (76) and a mobile mold (77) and has a cavity (75a) that is filled with the resin material; a load cell (60) that detects pressure acting on the screw (20); and a control device (100) that controls mold internal pressure. The control device (100) comprises: a pressure loss acquisition unit (111) that acquires, as a pressure loss, pressure detected by the load cell (60) when the resin material has been injected from the nozzle (12) contacting the fixed mold (76) in a state in which the fixed mold (76) and the mobile mold (77) are open; an injection pressure acquisition unit (112) that acquires, as an injection pressure, a pressure detected by the load cell (60) when the resin material has been injected from the nozzle (12) into the cavity (75a) in a state in which the mold (75) is closed; and a virtual mold internal pressure calculation unit (114) that calculates a virtual mold internal pressure V by subtracting the pressure loss from the injection pressure.
Disclaimer: Curated by HT Syndication.
