Adjustable mother roll slitting knife rest of diaphragm slitting machine

The utility model relates to the technical field of film slitting, in particular to an adjustable mother roll slitting knife rest of a diaphragm slitting machine, which comprises an adjusting knife rest, an adjusting sliding groove and a locking sliding groove are arranged on the adjusting knife rest, the adjusting sliding groove and the locking sliding groove are arranged in a penetrating mode, a locking sliding block is arranged in the locking sliding groove in a sliding mode, and the locking sliding block is arranged in the locking sliding groove in a sliding mode. A rotating adjusting mechanism is arranged on the outer side of the adjusting tool rest, a zero-position limiting block is fixedly arranged at the end, away from the rotating adjusting mechanism, in the adjusting sliding groove, a plurality of adjusting sliding blocks are arranged between the zero-position limiting block and the locking sliding block, and slitting tools are arranged among the adjusting sliding blocks in an inserted mode. The sli