Automatic rubber turning device of open mill

The utility model relates to the field of open mills, in particular to an automatic rubber turning device of an open mill, which comprises a rubber turning mechanism and a driving mechanism used for driving the rubber turning mechanism, the driving mechanism comprises a screw rod, two ends of the screw rod are rotatably connected on a frame body of the open mill, the rubber turning mechanism comprises a rolling shaft and a sliding rail, and the rolling shaft is connected with the sliding rail. The two ends of the sliding rail are fixedly installed on a frame body of the open mill, the rolling shaft, the lead screw and the sliding rail are sequentially arranged in parallel, the rubber turning mechanism further comprises at least two sets of sliding blocks, lead screw sleeves and limiting rods, one ends of the sliding blocks and the limiting rods in each set are fixedly installed on the two sides of the corresponding lead screw sleeve, the other ends of the sliding blocks are connected to the sliding rail in a