Abstract: The invention relates to a device for erecting flat folding box blanks or the like that comprises a chase (34) and a form punch (33). When the form punch is introduced into the chase, the walls of the folding box blank (1), which is arranged between the form punch and the chase, are folded upward. When the walls are folded upward, the form punch and the chase are synchronously moved in a direction of conveyance of the folding box blanks. According to the invention, the form punch and the chase are each mounted in a crank mechanism (31, 32). A device of this type can be provided with a very simple structural design and can be economically produced. In addition, the device can be easily and quickly retrofitted.