Injection molding machine with external apparatus, e.g. with a power distributor

An injection molding machine system (1, 2) includes multiple injection molding machines (30, 50, 42, 62) and a power distributor (20, 27) configured to supply electric power to the injection molding machines (30, 50, 42, 62). The power distributor (20, 27) includes an electric power accumulating part (26) configured to store electric power regenerated by the injection molding machines (30, 50, 42, 62).