SAFETY DEVICE OF INJECTION MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To enhance the safety of an injector for injecting a supercritical fluid in a cylinder and to prevent the damage of the injector. SOLUTION: A pressure sensor 10 is arranged in the vicinity of the injector 7 attached to the cylinder 1 and the output signal thereof is taken in a controller 4 to always monitor the pressure in the cylinder 1. Further. At the time of generation of abnormal pressure, a stop command is commanded to a screw drive device 3 from the controller 4 to stop a cycle. Furthermore, a bursting plate 11 is arranged in the vicinity of the injector 7 to constitute a fail-safe electrical/mechanical safety system.