Full-automatic board connecting system for rotary-cut raw veneer and board connecting method of full-automatic board connecting system

The full-automatic plate receiving system for rotary cutting of the raw material veneer comprises a turnover device, the turnover device comprises a turnover belt, the turnover belt comprises an upper-layer conveying belt and a lower-layer conveying belt, the upper-layer conveying belt and the lower-layer conveying belt operate synchronously, and a conveying channel is formed by the space between the upper-layer conveying belt and the lower-layer conveying belt; the conveying channel is divided into a first conveying section, a second conveying section, a third conveying section and a fourth conveying section in the direction from upstream to downstream, the third conveying section is arranged in a triangular shape, the fourth conveying section horizontally extends from back to front, and the first conveying section and the second conveying section convey veneers to the third conveying section to be turned over to reach the fourth conveying section; the discharging device comprises a position detection sensor