Metal shredding machine convenient to extrude and used for recycling metal composite material

The utility model relates to the technical field of metal shredding machines, and discloses a metal shredding machine convenient to extrude for recycling metal composite materials, which comprises a bottom plate, a metal shredding machine and a knife tackle, the metal shredding machine is arranged at the top of the bottom plate, the knife tackle is arranged in the metal shredding machine, a trapezoidal feeding port is arranged above the knife tackle, and the knife tackle is arranged in the bottom plate. And a discharging opening is formed below the cutter set, and an extrusion device is arranged at the top of the bottom plate. A first motor is started to drive a screw rod to rotate, the screw rod is in threaded connection with a movable plate, so that the movable plate moves left and right, two first sliding blocks are in sliding connection in sliding grooves in the top and the bottom respectively, rotation of the movable plate is limited, the movable plate drives a movable rod to move, and therefore an extru