Abstract:
A signature folding device includes a rotating belt and a plurality of blades attached to the belt, each of the plurality of blades contacting one of the signatures over an entire length of the one signature at a same time. Also disclosed is a method for folding a signature comprising transporting the signature on a fold table having a gap, the signature moving in a transport direction and forming a plane. A folding blade having a blade edge is moved in a direction both perpendicular and parallel to the transport direction, the blade edge being parallel to the plane upon contact with the signature, so as to pass through the gap and fold the signature.
Abstract:
The present invention relates to a folder apparatus including a first cylinder for transporting a product and a folding cylinder rotatably engaged with the first cylinder at a nip. A product guiding device is assigned to a transition area between surfaces of the first cylinder and the folding cylinder, the guiding device having a smoothing element which includes different sections of product contacting elements being angled in opposite directions.
Abstract:
In order to set the sheet guidance devices of a folder simply and quickly for the production of once or twice cross-folded products and to guide the products reliably and carefully, a tongue and a tongue bar are arranged in the runout gap of the folding blade cylinder and gripper/folding knife cylinder. To produce twice cross-folded products, the tongue can be moved out of the runout gap, after which a guidance device with a somewhat arc-shaped contour is directed to the runout gap.
Abstract:
A method of folding a sheet, cut from at least one advancing web of material electrostatically bonded at least on one side and preferably consisting of paper or of a composite manufactured therefrom, transferred to a collecting cylinder, picked up in the vicinity of its midline by a folding cylinder that rests against the collecting cylinder in a nip along the midline of the sheet, and drawn completely over the folding cylinder while both halves of the sheet are folded together along the midline as the rotation continues, whereby the cylinders rotate in opposite directions and the web is charged at least outside the cylinders if necessary. An electrostatic field exerts a force of attraction in the nip (which is upstream in the direction that the two cylinders rotate in) on the top of the sheet (which is pulled off in a direction opposite the one that the collecting cylinder rotates in) toward a guide and the sheet is accordingly attracted and transferred to the folding cylinder.
Abstract:
To permit introduction of adjacently located sheet elements (20, 22), for example folded sheets (24), received from a folding flap cylinder (2), with the fold line or spine leading and with the sheet elements spread apart, a guide belt (13) has laterally projecting fingers (12) which engage between the sheet elements (20, 22), the guide belt being positioned adjacent to and operating at essentially the same speed as a pair of transport belts (25, 26) between which the sheet elements are being transported. The fingers are inserted between the sheet elements as a sheet (24) is folded or two individual sheet elements are gripped by a folding flap or gripper cylinder (2), and remain between the sheet elements upon transport by the transport belt system. At a delivery region, adjacent a storage unit, the guide belt is deflected over a roller, thereby twisting the fingers and spreading the sheet elements apart adjacent their trailing ends, by guiding the guide belt in a path different from the transport belt system. Preferably, the spread-apart sheet elements are transferred to an accordion or zig-zag pocket structure, for example made of elastic sheet elements, which, to receive the spread-apart sheet elements, has the accordion pockets spread, for example for a worm (50).
Abstract:
The apparatus and method for folding a sheet or signature wherein the sheet or signature is passed edgewise along an arcuate path, a portion of the sheet or signature intermediate the leading and trailing edges thereof is gripped and withdrawn from the first arcuate path to a tangential second arcuate path, and a fluid or air stream is directed counter to and away from the second path to smoothly guide and gently fold the leading edge back upon the trailing edge.
Abstract:
To permit high speed operation of printing substrate handling apparatus, using cylinders operating, for example, at speeds in the order of about 650 rpm, with positive guidings of sheets, a sheet folding and handling cylinder in the form of spaced staggered circumferential cylindrical portions has a plurality of sets of rollers (13, 14, 15) located within the circumferential outline thereof. An endless conveyer belt, cable or the like (11) is guided by a first guide roller (12) located adjacent the contact line of a sheet collection cylinder (2) and the sheet folding and handling cylinder (1) to guide the belts (11) to as close to the contact line (A) of said cylinders and then into the circumferential outline, to be then guided by the rollers (13, 14, 15) within the outline, one--preferably the leading one (15)--being positioned more inwardly of the circumference than the others, so that the angle which the belts (11) make at the contact line with the circumference of the handling and folding cylinder changes upon rotation of the folding cylinder to permit penetration within the circumference of the folding cylinder of a cutter or folding blade (6) to cut a web, or fold a sheet being transported on the collection cylinder (2). The belts are guided out of the circumference of the sheet handling and folding cylinder (1) in essentially trangential direction to lift the folded edge (8) out of grippers (7) on the folding cylinder and gently transfer the sheets to further belt conveyors (33, 34).
Abstract:
The invention is concerned with a device for slowing down a fed printing specimen as it is fed to the paddle wheel, and includes a pair of rollers, one of which is adjustable relative to the other to provide for an adjustable wedge portion therebetween which includes means to slow the speed of the fed printing specimen down as it is fed to the paddle wheel.
Abstract:
A sheet folding device includes a sheet loading unit, a folding processing unit, and an ejection roller. The folding processing unit includes a folding roller pair. A sheet alignment part and a sheet moving part are provided. A sheet loading tray includes an upstream-side loading part and a downstream-side loading part. The sheet alignment part includes an upstream-side alignment part and a downstream-side alignment part. The downstream-side alignment part includes a side plate, a fixed guide plate, and a movable guide plate supported on the side plate in such a manner as to be swingable between a retreat position and a regulation position.
Abstract:
A parallel folding apparatus of a folding machine, which can automatically exercise position control of brush guides in accordance with folding specifications while the machine is in operation, is provided. In the parallel folding apparatus of the folding machine, comprising: a first jaw cylinder (26), an upper second jaw cylinder (27), and a lower second jaw cylinder (28) arranged, with their circumferential surfaces in contact with one another, grippers (36a to 36d) of the upper second jaw cylinder, or grippers (36a to 36d, 38b, 38d) of the upper second jaw cylinder and the lower second jaw cylinder, being arranged to double-parallel-fold a signature in cooperation with knives of the first jaw cylinder; and brush guides (41) disposed along the circumferential surface of the first jaw cylinder located upstream, in the rotating direction, of the points of contact of the first jaw cylinder with the upper second jaw cylinder and the lower second jaw cylinder, each brush guide is provided so as to be movable toward and away from the circumferential surface of the first jaw cylinder by a pair of (right and left) drive portions (44a, 44b) comprising threaded shafts (51a, 51b) and brackets (58a, 58b) driven by motors (47a, 47b) with rotary encoders (55a, 55b).