a second cavity half mold 24 and half mold 27 the clamping pressure between both platens 14 16 with in between swivel platen 22 is realized in a manner known per se via tie bars and a hydraulic clamping unit for applying the clamping pressure as shown in fig1 3 the second plasticizing unit 32 is arranged on the moving platen 16 in a vertical disposition a mounting 30 is hereby secured to the top of the platen 16 for attachment of the plasticizing unit 32 which has a plasticizing cylinder 34 situated at the end face of the mounting outside of the clamping unit 12 in other words the plasticizing cylinder 34 is situated outside of the moving platen 16 at a distance thereto a melt deflection device 36 is mounted to the moving platen 16 and extends there through to port into the cavity of the closed molding tools 24 27 the plasticizing cylinder 34 can be connected to the melt deflection device 36 so that melt produced in the plasticizing unit 32 can be introduced via the melt deflection device 36 into the cavity although not shown in the drawings it will be understood by persons skilled in the art.