Seedling conveying device of rice transplanting and sowing machine

The seedling conveying device comprises a box body, the outer wall of one side of the box body is rotationally connected with a side plate, the top of the box body is rotationally connected with a top plate, the top of the top plate is in threaded connection with a plurality of bolts, the bolts are in threaded connection with the box body, and a plurality of movable grooves are formed in the two ends of the inner wall of the box body. A movable block is slidably connected to the inner wall of the movable groove, third springs are fixedly connected to the top and the bottom of the movable block, and the other ends of the third springs are fixedly connected with the inner wall of the movable groove. Seedlings can be borne by the transmission mechanism in the box body, conveying and discharging of the seedlings are facilitated, the seedlings in the box body can be discharged from the side face conveniently by arranging the side plates of the box body, conveying and discharging convenience is improved, a movable