Extrusion forming device for plastic preparation

The extrusion forming device comprises a base, a rubber extrusion pipe and a rotary knob, the rubber extrusion pipe and the rotary knob are installed on the base, a frame and a frame plate are fixedly arranged at the upper end of the base, a hopper is fixedly arranged at the upper end of the frame through an equipment frame, and a feeding pipe is fixedly arranged at the bottom of the hopper; an intermittent transmission part which is matched with the rotating support rod to control the sieve tray to rotate is arranged on the third cross rod; and when the third cross rod rotates, the knob is controlled to rotate through a reversing transmission part. According to the glue melting device, the supporting rod drives the supporting arm to rotate synchronously, the rotating disc controls the screening disc to intermittently deflect by a certain angle through the gap transmission component, particles with large particle sizes continue to be screened off, in the process that the screening disc rotates to switch the p