Foamed resin molding mold, a manufacturing method of the foamed resin molded article and the resin foam product

摘要

Provided is an injection foaming mold capable of preventing, when formed resin molding is performed by a partial core back, degradation of an outer appearance and component precision, and occurrence of swelling when a portion that is not subjected to the core back is taken out of a die. The injection foaming mold includes at least: a fixed core (1) that avoids moving; and a movable core (2) that performs the core back. The injection foaming mold further includes a capacity change shape portion (6), which is formed in a region in which a capacity in the die is changed smoothly and continuously from the fixed core side to the movable core side, the capacity change shape portion (6) being formed at a boundary between the fixed core (1) and the movable core (2).