| 摘要 |
An operating device (10) for shut-off needles in injection moulding tools with 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 second direction (D2) that is perpendicular to the first direction (D1). At least two slide elements (50) are arranged between the displaceable element (20) and the guide rails (30) in grooves (40) running obliquely with respect to the first direction (D1) and to the second direction (D2), which convert a movement of the guide rails (30) in the first direction (D1) into a displacement motion of the displaceable element (20) in the second direction (D2). In order to achieve a flexible and easily manageable construction that permits inexpensive subsequent extensions and/or changes, the invention provides that at least one additional displaceable element (120) is arranged at the guide rails, where at least two slide elements (150) are arranged between the additional displaceable element (120) and the additional guide rails (130) in grooves (140) running obliquely with respect to the first direction (D1) and to the second direction (D2).
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