Preparation device and preparation method of honeycomb core material

The invention discloses a preparation device and a preparation method of a honeycomb core material. The preparation device comprises a first mold plate, and the first mold plate is provided with a plurality of first mold grooves, and a first mold convex surface is arranged between every two adjacent first mold grooves; a second mold plate which is arranged opposite to the first mold plate, a plurality of second mold grooves are arranged on the second mold plate, and a second mold convex surface is arranged between every two adjacent second mold grooves; a plurality of core molds which are arranged between the first mold plate and the second mold plate; and wherein the cross sections of the core molds are regular polygon, and the side lengths of the cross sections of the core molds are equal to the side length of the cross section of the first mold groove or the second mold groove, so that the core molds can be arranged in the first mold groove and the second mold groove. The technical problems of complex hone