Composite material grating type structure forming tool and hot press forming method

The invention relates to a molding tool and method, in particular to a molding tool and method for a composite material grating type structure and a hot press molding method. Positioning groove sets are arranged on the upper surface of the lower die plate in an array mode, core dies of columnar structures are inserted and fixed in the positioning groove sets, the upper die plate and the lower die plate are structurally symmetrical and are inserted and fixed to the tops of the core dies, and the outer die body is a vertically-through hollow shell, is supported between the lower die plate and the upper die plate and surrounds the core dies in a matched mode. Penetrating holes are formed in the upper pressing plate in an array mode, the upper pressing plate is arranged in the outer mold body in an attached mode and can move along the core mold, the lower pressing plate and the upper pressing plate are the same in structure, the lower pressing plate is connected with the outer mold body through an elastic lifting