Abstract: The invention concerns a process for fractionating hydrocarbon feeds employing at least one fractionation zone provided with separation contact means, and at least two switchable bottom zones which can be connected to the bottom of the fractionation zone in a manner such that at least a first of the bottom zones operates with said fractionation zone, in alternation, for a period at most equal to a plugging period, in a manner such that when at least the first of the bottom zones becomes plugged or before it becomes plugged, it is disconnected from the fractionation zone in order to be cleaned while the feed fractionation process continues with at least one other of the bottom zones.

Abstract: The present invention relates to a method and device for transferring cutouts (6), for manufacturing packaging boxes having polygonal cross-sections, from a magazine (3) from a vertical stack, consisting of at least one stack (4, 5) of cutouts made of a cardboard or corrugated cardboard sheet material comprising notches. The method and device of the invention involve locating the top cutout of the stack using a camera (10), preliminarily detaching the cutout from the remainder of the stack, gripping, by means of suction, the thus-located top cutout, moving said cutout by means of a robotic arm (17) and releasing same to a next station, for or prior to subsequent shaping, and repeating the above cycle of steps with the next top cutout.

Abstract: The invention relates to a device (1) and a method for preparing a packaging box (2, 74) from at least one storage location (3) for a stack (4, 68, 69) of corrugated cardboard cut-outs, including means (6) for moving the stack forward while same is being unstacked and means (7) for unstacking the cut-outs by means of suction. Since the cut-outs are stacked vertically, the means (6) for moving the stack forward comprise a plate (8) for lifting the stack vertically up to an engagement plane (9) for the cut-out (28) located on top. The device comprises means (27) for locating the X, Y, Z position (pi) of the top cut-out in the storage location and means (29) for calculating the X, Y, Z path, comprising a vertical component, and means for unstacking on the basis of said position (pi), which are designed to control the movement of said unstacking means between a position (9) for grasping the cut-out and a position for positioning same a predetermined work station likewise located at X, Y, Z.

Abstract: The present invention relates to a method and device for transferring cutouts (6), for manufacturing packaging boxes having polygonal cross-sections, from a magazine (3) from a vertical stack, consisting of at least one stack (4, 5) of cutouts made of a cardboard or corrugated cardboard sheet material comprising notches. The method and device of the invention involve locating the top cutout of the stack using a camera (10), preliminarily detaching the cutout from the remainder of the stack, gripping, by means of suction, the thus-located top cutout, moving said cutout by means of a robotic arm (17) and releasing same to a next station, for or prior to subsequent shaping, and repeating the above cycle of steps with the next top cutout.