Patent ID: 7866975

Claim:
Operating device ( 10 ) for shut-off needles in injection moulding tools with needle valve nozzles, said device having a displaceable element ( 20 ) with at least two shut-off needles ( 16 ), said element moved between two guide rails ( 30 ) mounted so as to be longitudinally displaceable in a second direction (D 2 ) that is perpendicular to a first direction (D 1 ), where at least two slide elements ( 50 ) are arranged between the displaceable element ( 20 ) and the guide rails ( 30 ) in grooves ( 40 ) running obliquely to the first direction (D 1 ) and to the second direction (D 2 ) which convert a movement of the guide rails ( 30 ) in the first direction (D 1 ) into a displacement motion of the displaceable element ( 20 ) in the second direction (D 2 ), characterized in that at least two additional guide rails ( 130 ) can be coupled to the guide rails ( 30 ) between which at least one additional displaceable element ( 120 ) is arranged which at least two additional shut-off needles ( 116 ) can be fastened to, 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 to the first direction (D 1 ) and to the second direction (D 2 ), which convert a movement of the additional guide rails ( 130 ) along the first direction (D 1 ) into a displacement motion of the additional displaceable element ( 120 ) in the second direction (D 2 ).