This machine is connected to means and cleaning cotton carding between units. Upper and lower cotton box structure, the overall rigidity, precision, good sealing. Cotton manifold equipped with a pressure sensor, ensuring uniform density cotton inside cotton. Lower cotton box with fan and blowing through the static pressure diffusion cycle, so that the whole machine deputy in the lower cotton tank pressure evenly. Imported pressure sensor, according to the box under pressure to control cotton cotton box feed roller speed, to ensure the next cotton tank pressure is more stable. Forward feed use of cotton, elastic grip. Spiral arrangement comb beater, small fiber damage.