Integral conveyor wall panel of nodular cast iron; Fish-scale powerful paper suction head,four pick up and four forward suck heads, the suction head can adjust various suction angles according to the deformation of the paper; Adjustable suction tube, suction head and air valve are treated with super hard alloy; 3 anti-collision devices for feeder heads; Horizontal paper separating and blowing device; The main and auxiliary stackers non-stop alternately, and the feeder non-stop operation, the maximum stack height is 1600mm; The electric left and right fine-tuning device for the main feeding paper stacker; The pre-stacking device is equipped with a track so that the operator can accurately and conveniently feed the paper stack into the feeder; Electromechanical double sheet detector.