Automatic board turning device based on gypsum board processing

The utility model discloses an automatic plate turning device based on gypsum board processing, which comprises a turning cylinder and a U-shaped plate turning fork, and a plurality of contact structures are arranged on a side plate of the plate turning fork. The contact structure comprises a mounting hole formed in the side plate, a rolling bearing located in the mounting hole, a mandrel, a bearing hole and a positioning hole which are formed in a pair of opposite hole walls of the mounting hole respectively, a spring installed in the bearing hole and a countersunk bolt which is in threaded connection with the side plate and abuts against the mandrel, and the mandrel is in interference fit with an inner hole of the rolling bearing. The two ends of each spring are inserted into the corresponding bearing hole and the corresponding positioning hole respectively, and one end of each spring abuts against the bottom of the corresponding bearing hole through a spring; and a separation opening is formed in the side