a rotary plastic molding apparatus having internal packing space is featured . a nozzle is divided into channels equal to the number of casting device disks . grooves are disposed in casting disks for supplying the melt . the grooves are displaced relative to each other and slots are provided between them to introduce packing lintels . the mold is divided into sections . in each section , an accumulator and sockets for molding articles are provided . the components communicate among themselves and can be oriented at definite angles . the accumulator is disposed before the molds . holes are provided to supply the melt from the accumulator to the molds . certain holes can be closed to get a certain article drawing . the transition section of the accumulator is divided into sections for uniform division of the melt . the number of sections is equal to the number of sockets . centers of sockets are connected with the mold inner space by means of holes for casting articles with lugs or for supplying additional melt component to the socket .