Abstract: A creasing-folding machine, for producing paper and bookbinding articles, has a feed unit, for feeding sheets along a feed path, a creasing unit, and a folding unit in series with one another; the creasing unit has at least one creasing roller positioned with its axis perpendicular to the feed path and having, on its lateral surface, a creasing blade extending crosswise to the feed path, and a pressure roller which cooperates with an opposite face of each sheet to the creasing roller; the creasing unit is interposed between the feed unit and the folding unit to perform transverse creasing operations upstream from the folding unit.

Abstract: A machine for producing articles of sheet material, having a conveyor with powered rollers for feeding blanks along a path; pressure devices for holding the blanks in contact with the powered rollers; and operating devices which interact with the blanks to perform operations, in particular folding and gluing operations, on the blanks as the blanks travel along the path. The conveyor has a number of drive members arranged along the path, and to which the pressure devices are connectable by universal transmission assemblies.

Abstract: A creasing-folding machine, for producing paper and bookbinding articles, has a feed unit, for feeding sheets along a feed path, a creasing unit, and a folding unit in series with one another; the creasing unit has at least one creasing roller positioned with its axis perpendicular to the feed path and having, on its lateral surface, a creasing blade extending crosswise to the feed path, and a pressure roller which cooperates with an opposite face of each sheet to the creasing roller; the creasing unit is interposed between the feed unit and the folding unit to perform continuous transverse creasing operations upstream from the folding unit.

Abstract: A machine for producing articles of sheet material, having a conveyor with powered rollers for feeding blanks along a path; pressure devices for holding the blanks in contact with the powered rollers; and operating devices which interact with the blanks to perform operations, in particular folding and gluing operations, on the blanks as the blanks travel along the path. The conveyor has a number of drive members arranged along the path, and to which the pressure devices are connectable by universal transmission assemblies.

Abstract: A clamp for connecting together a set of structural bars having a body defining at least one pair of prismatic guides for positioning one of the bars within the clamp and a locking mechanism for securing the bars inside the guides. The body is defined by four sheet metal plates arranged parallel and facing each other in pairs of two, each pair of two arranged perpendicular to the other such that each pair is connected to the other collectively along four parallel edges of the body. The prismatic guides are each defined by a pair of aligned seats formed along respective sides of each pair of facing plates.

Abstract: In a machine for forming articles of sheet material, an orderly succession of flat blanks is fed along a forming path on a roller conveyor having powered rollers equally spaced with a given spacing; on the roller conveyor, the blanks are maintained contacting the rollers by idle-wheel pressure devices, and are deformed by folding devices; the pressure devices and folding devices being fitted to respective gantry-type frames having respective removable cross members, and which can be set to a number of predetermined reference positions and locked in such positions releasably with respect to the roller conveyor; and a continuous guide and slide adjusting assembly being interposed between each frame and the respective pressure devices and folding devices to adjust the position of the devices on the roller conveyor as a function of the shape and size of the blanks.

Abstract: A clamp for connecting bars, and having a body defining at least one pair of prismatic guides for respective bars; and means for locking the bars inside the guides; the body is defined by four sheet metal plates arranged parallel and facing in twos, and connected substantially along the edges of the body; and the guides are each defined by a pair of aligned seats formed along respective sides of two respective facing plates.

Abstract: In a machine for forming articles of sheet material, an orderly succession of flat blanks is fed along a forming path on a roller conveyor having powered rollers equally spaced with a given spacing; on the roller conveyor, the blanks are maintained contacting the rollers by idle-wheel pressure devices, and are deformed by folding devices; the pressure devices and folding devices being fitted to respective gantry-type frames having respective removable cross members, and which can be set to a number of predetermined reference positions and locked in such positions releasably with respect to the roller conveyor; and a continuous guide and slide adjusting assembly being interposed between each frame and the respective pressure devices and folding devices to adjust the position of the devices on the roller conveyor as a function of the shape and size of the blanks.