ACTUATION MAGNET FOR MOVING A CLOSURE NEEDLE OF A HOT-RUNNER NOZZLE OF AN INJECTION MOULDING TOOL

摘要

The invention relates to an actuation magnet for moving a closure needle of a hot-runner nozzle of an injection moulding tool, with an armature which is coupled in movement to the closure needle, and may be displaced between a first and a second core by way of subjecting at least one coil to current, as well as with a permanent magnet which is arranged in a manner such that it exerts an additional magnetic force onto the armature in at least one, preferably in two movement directions.