To increase speed during press molding by minimizing a vertically moving stroke for the press molding action of an upper mold base and to miniaturize an actuation means for the vertical movement of the upper base, a driving device, and others.

An upper mold base 6 which is installed vertically movably in an upper place above the guide part 3 of a base 2 and bas the first upper mold 26, an lower mold base 5 which is installed vertically movably in a lower place facing the upper place and has the first lower mold, an intermediate mold base 7 which is set between the upper mold base and the lower mold base, with the descent from the set position obstructed, and has the second upper mold 28 corresponding to the first lower mold and the second lower mold 29 corresponding to the first upper mold, the first actuation means which moves the upper mold base vertically to the intermediate mold base, and the second actuation means which moves the lower mold base vertically to the intermediate mold base are provided. The lower mold base and the upper mold base are moved vertically to the side of the intermediate mold base, and a basis supplied to the first lower mold, the second upper mold, the second lower mold, and the first upper mold respectively is press-molded.