A DEVICE AND A METHOD FOR MOVING A JET MEMBER

摘要

A device for moving a jet member (6) having a nozzle comprises a carriage (4) with a base portion (5) to which the jet member is connected. The carriage is movable in a substantially rectilinear first path along a guide member (3). The connection of the jet member to the base portion provides a movability of the jet member (6) with respect to the base portion (5) and by that said carriage comprising a movability of the jet member for moving an impact point of the jet in a second path perpendicularly to said first path. A control unit is controlling a driving arrangement to combine a movement of the carriage along the guide member (3) and a movement of the jet member with respect to the base portion of the carriage so as to make an impact point of the jet on a said layer to travel with a constant speed over the layer.