| 摘要 |
Provided is a malfunction monitoring method for an injection molding machine, the method being capable of detecting as a malfunction the presence of a foreign object such as a portion of a molding between the molds on the basis of a change in torque value during mold-opening, which occurs in the first half of a low pressure mold-closing process that is performed before a high pressure mold-closing process, and when such a malfunction occurs, being capable of quickly stopping the mold closure action. When the injection molding machine (1) is being operated, if the torque value of a servo motor (17) in a malfunction-monitoring region (S-E) deviates from the range between an upper limit (U) torque value and a lower limit (L) torque value, a malfunction-determining means (25) determines that a foreign object is present between the molds and when the malfunction-determining means (25) determines that a foreign object is present, a servo motor-stopping means (26) stops the servo motor (17). |
