Funnel-shaped crystallizer copper plate mould of continuous casting sheet billet

The invention discloses a funnel-shaped crystallizer copper plate mould of a continuous casting sheet billet. The funnel-shaped crystallizer copper plate mould comprises a cooling water tank, a cooling water tank surface, inlaid strips, a rib plate and a water through hole in the rib plate, wherein the front side of the cooling water tank is a funnel-shaped working face, and the back surface of the cooling water tank has a cooling function; the inlaid strips are inserted into the cooling water tank to control the section dimension of the cooling water tank; the rib plate is arranged between the cooling water tank; the inlaid strips are connected with two positioning mechanisms arranged on the upper part and the lower part of the cooling water tank surface; the inlaid strips and the cooling water tank form a water passing sectional area and are fixed through the positioning mechanisms; the cooling water tank sectional area of the high-temperature area of the copper plate mould is smaller than the area of the middle lower part; a distance between the working face of the high-temperature area of the copper plate mould and the bottom surface of the cooling water tank of the copper plate is smaller than the distance of the middle lower part; a distance between the center of the water hole of the high-temperature area of the copper plate mould and the working face of the copper plate mould is smaller than the distance of the middle lower part; therefore, the defect that water flow on a regulation screw position disorders since the area of the water tank is occupied because the regulation screw is adopted to regulate the inlaid strips is overcome, the service life of the copper plate mould is prolonged, and meanwhile, the quality of a continuous casting billet is stably improved.