摘要:
A sheet finisher of the invention includes a saddle-stitching unit to stitch a center of a sheet bundle, a folding unit to fold the center and to form a fold, a first and a second rollers that move along a direction of the fold while nipping and pressing the fold of the sheet bundle and reinforce the fold, and a drive section to move the first and the second rollers along the fold from a standby position apart from an edge of the sheet bundle, and the first and the second rollers are separate from each other in a thickness direction of the sheet bundle at the standby position, and after the first and the second rollers reach to a position where they pass the edge of the sheet bundle of a processable maximum size, they come close to each other in the thickness direction and nip the fold.
摘要:
A device for folding sheets of a medium into a booklet is provided. The device includes a frame; a cam mechanism attached to the frame; a lever attached to the frame, the lever being actuated by the cam mechanism; a first scissor arm attached to the frame, the first scissor arm being actuated by the lever; a pair of first rolls, one of the first rolls being movable by the first scissor arm; a second scissor arm attached to the frame, the second scissor arm being actuated by the lever; a pair of second rolls, one of the second rolls being movable by the second scissor arm; a crease blade for contacting the sheets to create a crease in the sheets; and a controller that controls a position of the crease blade, a gap between the pair of first rolls, and a gap between the pair of second rolls. The rotation of the cam mechanism through a first period of rotation causes the crease blade to move in a contact direction to create the crease in the sheets by pushing the sheets between the first rolls, the rotation of the cam mechanism through a second period of rotation causes the crease blade to move in a retracting direction away from the sheets, the gap between the pair of first rolls is controlled by the controller based on a total thickness of the sheets to be folded, and the position of the crease blade is controlled by the controller based on the total thickness of the sheets to be folded.
摘要:
A variable length cutting device includes a cutting cylinder and a transfer cylinder. The transfer cylinder cooperates with the cutting cylinder for cutting a ribbon into signatures having a desired cutoff length. An adjustable diameter portion of the transfer cylinder can be moved in a direction toward and away from the central axis of the transfer cylinder for adjusting the desired cutoff length of the signatures.
摘要:
A sheet processing apparatus having: a first roller pair for nipping a sheet so as to subject the sheet to first folding; a stopper member for stopping advance of the sheet after the first folding; a guide for flexing the sheet whose advance is stopped by the stopper member; a second roller pair for nipping the sheet flexed by the guide so as to subject the sheet to second folding; and a switch member for leading the sheet to be subjected to the second folding onto a first path having the stopper member mounted thereon, and leading the sheet to be subjected only to the first folding onto a second path connected to an outside of the apparatus, wherein the guide comes into stronger contact with the sheet to be subjected to the first folding and the second folding than the sheet to be subjected only to the first folding.
摘要:
Folding apparatus for signatures having a given format includes at least a first longitudinal folding device, a plurality of cylinders arranged in succession thereafter and followed by at least a second longitudinal folding device. Also included are a cylinder section having a base frame, and two cross-fold systems operatable independently of one another and integrated in the base frame. Each of the cross-fold systems has cylinders for guidingly carrying signatures having a given format, the signature-carrying cylinders being of such diameter as to have an outer cylindrical surface extending over the circumference thereof adequate for carrying one behind the other at one time at least two of the signatures having the given format.
摘要:
A fan delivery for a folding apparatus is provided, having at least one fan wheel including a number of fan-wheel elements and having a signature guide member that is movable relative to the fan wheel, in which the signature guide member has at least one arm that is introducible into a space defined by two fan-wheel elements. A folding apparatus is also provided.
摘要:
A folding cylinder for a folding apparatus of a rotary printing press having displaceable mechanisms which are connected with at least one spindle which is arranged in the folding cylinder, spaced radially from its shaft and can be turned by an adjustment spindle arranged in a coaxial bore in the shaft. The adjustment spindle is secured against rotation with respect to the shaft but is axially displaceable in its bore, and, axially spaced, is firmly attached to a pull which has two courses that extend towards each other, pass over a guide pulley, arranged in a radial opening of the bore to a drive disk which is fastened on the spindle and wrapped by the pull chain.
摘要:
Apparatus for forming a longitudinal fold in a web of paper includes a paper feed arrangement, paper folding means arranged below and downstream of the paper feed arrangement, and guide means extending between the paper feed arrangement and the paper folding means. The paper feed arrangement includes a support on which are mounted a pair of tractor drives engageable with the edges of the web. The support is movable in a transverse direction to alter the position of the web relative to the paper folding means.
摘要:
A sheet processing apparatus of the present invention includes a folding mechanism that includes a folding roller pair disposed along a conveyance path of sheets, the folding mechanism pushing the sheets from a direction orthogonal to a conveyance direction into a nip portion between the pair of folding rollers and rotating the folding roller pair to fold the sheets; and a discharge roller pair for discharging, into a paper discharge tray, the sheets that have been folded by the rotation of the folding roller pair, wherein each roller of the folding roller pair has a multilayer structure including a first layer roller and a second layer roller disposed on the outer periphery of the first roller, with the hardness of the first layer roller being higher than the hardness of the second layer roller.
摘要:
A device for diverting signatures into pockets of at least two slow-down devices is provided. The device includes a set of high-speed tapes (3) arranged downstream of a pair of cutting cylinders (2). A set of diverting belts (6) comprises raised surface portions (6.3) and non-raised surface portions (6.4). The set of high-speed tapes (3) is assigned to the diverting belts (6) to ride on the raised and non-raised surface portions (6.3, 6.4) thereof, thus, periodically altering a signature conveying path (1) of signatures.