Gating system of guider blade blank

The invention discloses a pouring system for a guider blade blank, belongs to the technical field of guider blade blank manufacturing processes, and solves the technical problem of low blank forming efficiency of product pouring in the prior art. Comprising a sprue cup, a blade part and a sprue structure communicated with the sprue cup, the sprue structure comprises a sprue upper section, a sprue lower section and a bottom cross gate which are arranged in an integrated structure, and the sprue upper section is communicated with a blade large margin plate inner sprue through the top and bottom cross gate; the blade large margin plate flow gate is communicated with the top end of the blade part; the bottom cross gate is communicated with the bottom end of the blade part through a blade small margin plate flow gate, and the cross section area of the blade small margin plate flow gate is larger than that of the top bottom cross gate; and the sectional area of the bottom cross gate is larger than that of the strai