Scroll plate mould

The invention discloses a scroll plate mould, and belongs to the technical field of scroll plate processing. The scroll plate mould comprises a convex mould and a concave mould, a cylindrical groove and a scroll groove communicating up and down are formed in the concave mould, the convex mould and the cylindrical groove jointly form an annular bulge on a scroll plate, the scroll groove is used forforming a scroll body on the scroll plate, the scroll groove comprises a plurality of sequential-connected forming groove sections in the extending direction of the scroll groove, each forming groovesection comprises a forming groove section speed adjusting section and a forming groove section speed non-adjusting section in the groove depth direction of the corresponding forming groove section,and each forming groove section speed adjusting section is close to the cylindrical groove and used for adjusting the flow velocity of a scroll plate billet in the groove depth direction of the scrollgroove so as to make the he