Cardboard feeding mechanism

The utility model discloses a cardboard feeding mechanism which is applied in a carton forming machine and comprises a cardboard platform (1). The cardboard platform is provided with a feeding motor (5), a side pressing board (15) and a front pressing board (11). The feeding motor is connected to a pushing paper slide plate (6) which is disposed on the cardboard platform and between the side pressing boards through a middle coupling assembly. The front end of the pushing paper slide plate is provided with a pushing paper piece (8). A paper feeding pad (9) is disposed on the cardboard platform (1) and below the front pressing board (11). The cardboard feeding mechanism is advantageous in that a cardboard at the bottom of a pile of cardboards is pushed out by the pushing paper piece through the sliding of the pushing paper slide plate, and the cardboard passes the front pressing board and the paper feeding pad, and then is discharged by the cardboard feeding mechanism, and thereby with the bottom-to-top feeding mode, feeding can be directly conducted above the cardboard, and no pause is required during feeding; feeding time is saved, work efficiency is high and automation degree is high; high requirement of mechanical automation production can be met, and efficiency of cardboard conveying is obviously improved.