Waterjet cutting machine comprising a device for moving a plate in a plane

The present invention relates to a device (2, 20) for moving a plate (3) in a plane P parallel to same, said plate comprising at least two opposite edges (31, 32) parallel to one another. Said device is characterized in that it comprises at least: - two arms (21, 22) parallel to one another and movable in a plane parallel to said plane P, one (21) of said arms (21, 22) being directly moved by a first actuator (23, 203), the other arm (22) being driven by said first arm via a connection member (24), - a drive member (25) mounted on the free end of each of said two arms (21, 22) such as to be pivotable about an axis (251) perpendicular to said plane P and moved by a second actuator (26), each drive member (25) engaging with an actuation member (33) arranged along one of the edges (31, 32) of the plate (3).