Whole-disc cutting device for grafted seedlings

The invention discloses a grafted seedling whole-disc cutting device which comprises a rack, a conveying mechanism, a seedling disc positioning mechanism, a rotary clamping mechanism, a cutting mechanism, an auxiliary seedling falling mechanism and a PLC, and the conveying mechanism, the rotary clamping mechanism, the cutting mechanism and the auxiliary seedling falling mechanism are all arranged on the rack; the conveying mechanism is used for conveying seedling trays, the seedling tray positioning mechanism is located on one side of the conveying mechanism and used for positioning the seedling trays, the cutting mechanism is used for cutting grafted seedlings clamped by the rotary clamping mechanism, and the rotary clamping mechanism comprises a lower clamping jaw, an upper clamping jaw, an upper clamping set and a lower clamping set. The PLC is used for controlling the conveying mechanism, the seedling tray positioning mechanism, the rotary clamping mechanism and the cutting mechanism to work. The lower cl