Cutter locking valve mechanism of full-hydraulic paper cutting machine

The invention discloses a cutter locking valve mechanism of a full-hydraulic paper cutting machine, which comprises a cutter locking valve body (14). A longitudinal inlet (18) and a transverse outlet (19) which are communicated with each other are arranged in the cutter locking valve body, a left valve spool (8) and a right valve spool (10) which are connected with each other are mounted at a crossed position of the longitudinal inlet and the transverse outlet of the cutter locking valve body, the left valve spool is connected with an adjusting rod (2), and a catch (11) is mounted at the outer end of the right valve spool by a spring (13). The adjusting rod rotates to push the left valve spool, so that the right valve spool and the cutter locking valve body can be opened or closed, whether pressure oil of a hydraulic system is outputted or not is controlled, and an effect that a cutter device stops cutting at the lowest position is realized. In addition, the cutter locking valve mechanism of the full-hydrauli