Patent ID: 6682334
Filing Date: 2004-01-27
Classification: B29C

Abstract:
A closing unit for use with an injection molding unit for processing plastic material, comprising:a fixed mold mounting plate; a moveable mold mounting plate; a linkage for connecting the moveable mounting plate to the fixed mounting plate; at least two spindles arranged in series and having thread pitches configured in opposite manner, one spindle operatively connected to the fixed mounting plate, and with the other spindle connected to the linkage; a drive mechanism for moving the moveable mounting plate relative to the fixed mounting plate, said drive mechanism including a sleeve-like force transmission element, which is arranged in concentric surrounding relationship to the spindles and has opposite end faces, and a first electric motor, which is operatively connected to the force transmission element; and at least two spindle nuts, one spindle nut arranged at one of the end faces of the force transmission element and interacting with the force transmission element and one of the spindles, and the other spindle nut arranged at the other end face of the force transmission element and interacting with the force transmission element and the other one of the spindles.