Safety protecting device of rubber cutting machine

The utility model discloses a safety protecting device of a rubber cutting machine. A protecting journal (15) is arranged on a piston rod (6) above a journal (14), two semicircular protecting rings (16) are abutted to hoop the protecting journal (15) and are fixed together by a bolt, a mounting hole is disposed on each end surface of each semicircular protecting ring (16), the mounting holes are penetratingly provided with long bolts (12), tails of the long bolts (12) penetrate through semicircular press plates (8) and match with a rubber cutting head (3) in a threaded manner, heads of the long bolts (12) are positioned above the semicircular protecting ring (16), and a gap is reserved between the head of each long bolt (12) and the corresponding semicircular protecting ring (16). The safety protecting device is simple in structure, unique in design and convenient in installation, and realizes safety protection effect, personal safety of operators is guaranteed during operation, and operational safety of equi