Tray-free packing method and tray-free packing device of brick stack

The invention discloses a tray-free packing method and a tray-free packing device of a brick stack. The tray-free packing device comprises a feeding machine, a clamping and transporting device, a cyclic conveying line, binding machines and a plurality of transfer trays; the feeding machine is arranged on a return track to complete the movement and positioning of a steaming-curing truck, and the return track runs through the clamping and transporting device; the cyclic conveying line is a closed rectangular annular cyclic conveying chain and comprises an empty-tray conveying chain-type conveyor belt, a secondary folding and clamping chain-type conveyor belt, an elevation and pushing mechanism, a primary binding chain-type conveyor belt, a secondary elevation and pushing mechanism, a secondary binding chain-type conveyor belt, a stack unloading chain-type conveyor belt, an empty-tray feeding chain-type conveyor belt and the a tray transportferring device; two binding machines respectively stretches across the p