Shearing mechanism for shearing machine for oblique planes at ends of packaging strips

The invention discloses a shearing mechanism for a shearing machine for oblique planes at the ends of packaging strips. The shearing mechanism is arranged on a framework of the shearing machine and comprises two cutters which are respectively used for shearing the front ends and the tail ends of the packaging strips to form the oblique planes at the ends of the packaging strips. The two cutters are oppositely arranged on two sides of a packaging strip shearing position in the shearing machine, are obliquely arranged towards the packaging strip shearing position to form a V-shaped structure and are respectively arranged in corresponding cutter guiding grooves, and two crank arms which are hinged onto the framework are respectively connected to the tails of the two cutters, and are driven by cylinders of the crank arms to swing around hinged joints, so that the cutters can be driven to reciprocate along the cutter guiding grooves, and the packaging strips which pass the packaging strip shearing position can be