nozzle of an injection molding tool the actuation magnet has an armature which is coupled in movement to the closure needle and may be displaced between first and second cores by subjecting at least one coil to current a permanent magnet is arranged in a manner such that it exerts an additional magnetic force on the armature in at least one preferably two movement directions application_number US 12544008 A description first a first embodiment of the invention is described by way of fig1 the actuation magnet 2 represented in fig1 comprises a soft magnetic cylindrical yoke or housing 4 a first coil 6 which may be subjected to current and a second coil 8 which may be subjected to current which are spaced from one another in the direction of the longitudinal axis a are in each case arranged in the housing 4 about a longitudinal axis a of the housing 4 the coils 6 and 8 are connected electrically in series so that they may be subjected to current in the same direction the housing 4 in each of its two end sides concentrically to its longitudinal axis a comprises an opening wherein a first soft magnetic core 10 projects into a first opening and a second soft magnetic core 12 projects into a second opening into the housing 4 the core 10.