To provide a molding machine with which a cycle time can be shortened and a size can be compact while assuring a stable operation.

First mold sections 7A and 7B as well as second mold sections 8A and 8B are provided movably between a molding position A for injection molding and molding preparing positions B and C separated from the position A so that the sections 7A and 7B as well as the sections 8A and 8B are not opposed to each other. While one of molds 1A and 1B molds, a molding 2 and a runner 4 are taken out from the other of the molds 1A and 1B. Thus, since it is not necessary to largely open the mold 1, a stroke of a mold clamping unit is shortened, the cycle time is shortened, and the molding machine 6 can be reduced in size.