| 摘要 |
In an apparatus for monitoring and controlling index cutting machines for cutting finger notch indexes in books or the like, which consists of a fixed bottom cutter 2 a top cutter 4 movable vertically, a horizontally movable holder 9 for the book 7 enabling the edge in which the index is to be cut to be correctly positioned between the bottom and top cutters, and a finger guard 10, the vertical movability of the top cutter being controlled by a sensor 12, 13 which determines whether the cutting area is free from objects, it is proposed, for the purpose of ensuring that the monitored gap above fixed cutter 2 is adjusted according to the increase of the thickness of the book, that a magazine of sensors 12, 13 be disposed with vertical spacing of finger gap width (about 10 mm) and be coupled to other sensors 14, which sense the horizontal feed of the book, in such a manner that at a book thickness which reaches a first lower most sensor (12, 13), and which corresponds to the finger gap width spacing, a first sensor (14) sensing the horizontal feed deactivates said first sensor (12, 13), and that the other adjusted sensors (12, 13; 14) control similar operations in dependence on the height and feed of the book. <IMAGE> |
