Patent ID: 7309307

Claim:
A device for folding flaps of box blanks having crease lines extending transverse to a travel direction of the blanks, for use on a folder-gluer, wherein the folder-gluer has a frame and a plurality of crossbars secured to the frame; the device comprising a drive mechanism operable for feeding the box blanks in the travel direction; a rotary member rotatable around an axis transverse to the travel direction and having a free end; a motor operable for driving rotation of the at least one rotary member; at least one folding arm rotatable with the rotary member being fixed to the free end of the rotary member; a removable linking member removably connected to any of the support crossbars secured to the frame of the folder-gluer; an adjusting device operable for adjusting the position of the at least one folding arm with respect to the support; a synchronization device of the motor comprising: an encoder in desmodromic connection with the drive mechanism of the box blanks; and a detector of the passage past a reference position of the box blanks on the folder-gluer.