| 摘要 |
PURPOSE:To prevent breakage of mechanism from happening by automatically correcting die clamping force only after the die clamping force is out of permissible range at sequentially prescribed number of times and stopping the machine at the time of occurrence of abnormal state still after correcting. CONSTITUTION:After clamping parting faces of a fixed die 17 and a movable die 18 are joined, die height adjustment is executed to set the die clamping force a prescribed value, which is inputted to an arithmetic and control unit 1. Further, it is instructed to the arithmetic and control unit 1 that the correction of the die clamping force is executed at the fixed number of times when the measured values with a detecting sensor 3 are sequentially out of the permissible range and that the operation is stopped at the fixed number of times when the measured values of the die clamping force are sequentially out of the permissible range still after correcting. Therefore, it can accurately deal with not unexpected fluctuation in the die clamping force, but only fluctuation in die clamping force caused by heat expansion of the die. Further, when the measured values of the die clamping force sequentially show the abnormal values at the prescribed number of times, it is judged as the abnormal state, and the machine is stopped and the breakage of the mechanism can be prevented from happening. |
