| 摘要 |
PROBLEM TO BE SOLVED: To work a dead zone of a plate without changing a work clamper. SOLUTION: A first dog is arranged to operate a corresponding mechanically operated selector valve 6 when any dead zone Z is positioned in a prescribed range S slightly longer in the left side/right side than the left/right range of a working region A, and further a second dog 73 is arranged to move a corresponding clamper in the forward direction when the dead zone Z is advanced into the working region.
|
