Abstract: A paper folding station with a paper-feeder and a first pair of motorized rollers supported at a delivery end of the paper-feeder about respective parallel axes to draw sheets of paper from the feeder. One of the rollers is mounted on a first adjustable support. A folding buckle is provided to receive the sheets from the first pair of rollers through an inlet mouth. The buckle has a barrier causing the sheets to stop and bend into the shape of a groove below the inlet mouth. A second pair of rollers is supported near the inlet mouth about respective parallel axes to pinch the groove and to make a transverse fold on the sheet. The paper-folding station further comprises at least one transverse beam to guide the sheet near the inlet mouth.

Abstract: A paper folding station with a paper-feeder and a first pair of motorized rollers supported at a delivery end of the paper-feeder about respective parallel axes to draw sheets of paper from the feeder. One of the rollers is mounted on a first adjustable support. A folding buckle is provided to receive the sheets from the first pair of rollers through an inlet mouth. The buckle has a barrier causing the sheets to stop and bend into the shape of a groove below the inlet mouth. A second pair of rollers is supported near the inlet mouth about respective parallel axes to pinch the groove and to make a transverse fold on the sheet. The paper-folding station further comprises at least one transverse beam to guide the sheet near the inlet mouth.

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 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.