Pouring cap opening treatment device and precast concrete component forming mold

The utility model provides a pouring cap opening processing device and a concrete prefabricated part forming die. The pouring cap opening processing device comprises a sleeve and a piston arranged in the sleeve in a sleeved mode, a connecting piece is arranged at one end of the sleeve, a profiling opening is formed in the other end of the sleeve, a lead screw is movably arranged on the connecting piece in a penetrating mode, one end of the lead screw extends into the sleeve and is connected with the piston, the other end of the lead screw is located on the outer side of the sleeve, and the other end of the lead screw is connected with the profiling opening. When the lead screw rotates relative to the connecting piece and drives the piston to move axially, the lower surface of the piston can coincide with the profiling opening. Compared with the prior art, the pouring cap opening processing device provided by the utility model can utilize the lower surface of the piston as a forming surface during concrete pou