OPERATING DEVICE FOR SHUT-OFF NEEDLES IN INJECTION-MOULDING DEVICES WITH NEEDLE VALVE NOZZLES

摘要

An operating device (10) for shut-off needles in tooling for injection-moulding processes using needle valve nozzles has a displaceable element (20) to which at least two shut-off needles (16) can be fastened and which can be moved, between two guide rails (30) mounted so as to be longitudinally displaceable in a first direction (D1), in a second direction (D2) running perpendicularly to the first direction (D1). Between the displaceable element (20) and the guide rails (30), at least two slide elements (50) have been arranged in grooves (40) which run obliquely with respect to the first direction (D1) and to the second direction (D2), and these convert a movement of the guide rails (30) in the first direction (D1) into a displacement movement of the displaceable element (20) in the second direction (D2). In order to ensure that the structure is flexible and easy to operate, and permits inexpensive subsequent extension and/or changes, the invention provides arrangement, at the guide rails, of at least one further displaceable element (120), and arrangement, between the further displaceable element (120) and the further guide rails (130), of at least two slide elements (150) in grooves (140) running obliquely with respect to the first direction (D1) and to the second direction (D2).