The invention discloses an automatic
cutting and
smoothing mechanism. The automatic
cutting and
smoothing mechanism comprises a printer, wherein a lower supporting plate is arranged on the surface wall at one side of the printer; a paper outlet is formed in a position, above the lower supporting plate, on the surface wall at one side of the printer; a
fixed frame is welded on a position, above thepaper outlet, on the surface wall at one side of the printer; a
smoothing roller is rotatably connected on the
fixed frame through a rotary shaft; the smoothing roller is in transmission connection with an
electric motor inside the printer through a belt; a U-shaped frame is welded on a position, at one side of the smoothing roller, on the
fixed frame; the U-shaped frame is fixedly equipped witha cutter through a telescopic air cylinder; and a
cutting slot matched with the cutter for use is formed in the lower supporting plate. According to the automatic cutting and smoothing mechanism disclosed by the invention, the fixed frame is firstly arranged, and the
electric motor is arranged on the fixed frame for driving the smoothing roller rotated by the
electric motor; and the smoothing roller is arranged, so that printed electrocardiograph paper can be smoothed and conveyed in an auxiliary mode, and therefore, the electrocardiograph paper is conveniently observed and discharged.