MOLDING ASSISTANCE DEVICE FOR INJECTION MOLDING MACHINE

A molding assistance device includes: a data input section for inputting resin related data including reinforcing fiber data, and molding machine related data including at least screw data; a calculation expression data setting section in which solid phase rate calculation expression data are set, the solid phase rate calculation expression data being used for calculation of a solid phase rate of molten resin containing reinforcing fibers in a heating cylinder on the basis of input data inputted from the data input section and molding condition data set by a molding condition setting section; and a calculation processing functional section which includes at least a solid phase rate calculation processing section and a fiber state calculation processing section. The solid phase rate calculation processing section obtains an estimated solid phase rate of the reinforcing fiber-containing molten resin at the time of completion of metering by calculation processing based on the solid phase rate calculation expression data. The fiber state calculation processing section obtains an estimated breakage rate of the reinforcing fibers at the time of completion of metering.