Tray stacking machine

The utility model provides a tray stacking machine, relates to the technical field of logistics transportation, mainly aims at solving the technical problems that in the prior art, tray recycling depends on manpower, and the automation degree is low, and provides tray stacking machine equipment which can be highly automated. The tray stacking machine comprises a rack, a pallet fork mechanism and a bracket mechanism, wherein the rack is of a frame structure; the pallet fork mechanism is fixedly arranged on the rack and can reciprocate along a fixed path relative to the rack; the pallet fork mechanism comprises a tray taking fork and an opening and closing driving unit, the opening and closing driving unit comprises an opening and closing motor, an opening and closing belt wheel and an opening and closing synchronous belt fixedly connected with the tray taking fork, and the opening and closing motor drives the opening and closing synchronous belt to rotate through the opening and closing belt wheel so as to dri