Simple steel die center line positioning device

The invention discloses a simple steel mould center line positioning device, which belongs to the technical field of concrete product steel mould transformation, and comprises a positioning mechanism and a moving mechanism, the positioning mechanism comprises a diamond cone, a diamond cone fixing ring and an adjusting screw rod for connecting the positioning mechanism and the moving mechanism; the moving mechanism comprises an auxiliary mechanism, a first moving assembly and a second moving assembly; the auxiliary mechanism comprises a handle, a first leaning rod and a second leaning rod; the adjusting screw rod is screwed in the second leaning rod; the diamond awl is movably connected to the bottom of the diamond awl fixing ring through a connecting sleeve; the diamond cone fixing ring is arranged on the adjusting screw rod in a sleeving manner; one end of the handle is connected with the second leaning rod, and the other end of the handle is connected with the second moving assembly; the first leaning rod i