Cutting mechanism of ream wrapping machine

The utility model relates to the field of ream paper packaging machinery, in particular to a cutting mechanism of a ream wrapping machine. The cutting mechanism of the ream wrapping machine comprises a paper roll frame, a tensioning mechanism, an encoder, a paper feeding mechanism, a paper cutting mechanism and a machine frame, wherein a paper roll releasing mechanism is arranged at the front part of the machine frame, a gravity roller is included in the tensioning mechanism, and a roller cutter is included in the paper cutting mechanism; due to the arrangement of the paper roll releasing mechanism, dual powered traction is achieved, abrasion to a paper feeding rubber roll is reduced, and the service life of the paper feeding rubber roll is greatly prolonged; the gravity roller is used for tensioning and collating paper, so that the stability of paper conveying is ensured; and due to the adoption of the paper cutting mechanism provided with the disc-shaped roller cutter, the service life of the cutter is prol