Lift type reciprocating automatic plate turnover machine and method

The invention discloses a lift type reciprocating automatic plate turnover machine and a method, and belongs to the technical field of machinery. One end of a double-output shaft of a speed reducing motor is connected with a first universal coupling; the speed reducing motor is fixed on the ground; the first universal coupling is connected with a first lower reversing box; the first lower reversing box is fixed on a frame, and is connected with a second universal coupling; the second universal coupling is connected with a first upper reversing box; the first upper reversing box is fixed on the frame, and is connected with a first driving shaft through a coupling; the first driving shaft is fixed on the frame through a plummer block, and is connected with a first driving chain wheel; a first driven shaft is connected with a first driven chain wheel; two ends of a first chain are respectively connected with a first counterweight and a double-layer conveying roller way; and the first chain is connected with the