Abstract: Delivery and ejection device (20) for flat elements (2) into a machine working them, in particular into a machine (10) of packaging production continuously delivering a plurality of lines of flat elements (2) arranged into parallel streams (22) successively onto three conveyor belts (13, 23, 33). These streams are recurringly delivered into a stacker (40) thanks to a mechanism (60) of drive and interruption of the streams. The device (20) allows to separately reject at least one stream towards a reject conveyor belt (90) comprising flat elements (2) scanned as being defective. The mechanism (60) includes two carriages, one upper (61) and the other lower (62), able to move simultaneously, at the same speed and into opposite direction along a axis parallel to the streams lines (22).

Abstract: Scanning device (1) for register marks (21, 22, 31, 32) printed onto a substrate (2) travelling into a polychrome printing machine. This device comprises at least one light source (3, 4) enlightening, onto the substrate (2), a lighting area (5) crossed by the register marks (21, 22, 31, 32), an optic (6) which allows obtaining onto a photosensitive element (7) the images of said register marks named as a plurality of portions (8) successively scanned with a certain scanning rate, as well as a microprocessor (9) driving the light of the light source (3, 4) and controlling electric pulses issued by pixels (17) of the photosensitive element (7). The source (3, 4) enlightens the lighting area (5) of the substrate (2) with at least one modulation of its color and/or of its intensity during the simultaneous or sequential scanning of at least two register marks. (21, 22, 31, 32).

Abstract: This system for fixing and guiding a bearing (3) in a slot (5) in a frame (8) comprises elongate flat fixing members (14) extending straddle-fashion between the coplanar respective end faces of the respective uprights (6, 7) of the frame and of the said bearing (3). Extending through each of said fixing members (14) are three cut-outs, one of which is in the form of an elongate closed opening and the other two in the form of slots open at one of their ends, disposed at the respective two ends of the said elongate opening. A strip perpendicular to the said uprights (6, 7) is formed between said elongate opening and each of said open slots adapted to form in the said fixing member (14) two fixing lugs disposed on either side of said slot, one lug being fixed to the upright (6; 7) and the other to the said bearing (3).

Abstract: The cutting plate of a press for shaping sheets of paper or cardboard comprises a bottom beam receiving a support plate (1) on which a metal cutting plate (7) is placed, the support plate (1) has means for adjusting its position in a horizontal plane and means for fixing the cutting plate (7). The support plate (1), on a first side thereof, has at least one moving stirrup (15, 16), the said moving stirrup being adapted to take up a clamping position where it prevents the cutting plate (7) from sliding on the support plate (1) and an inoperative position where it enables the cutting plate (7) to slide on the support plate (1). The side opposite the first side and one of the adjacent sides are provided with at least one fixed stirrup (10, 11, 12, 13, 14) disposed so that portions of the edge of the cutting plate (7) can be slid into the said fixed stirrups and be gripped under the moving stirrups in the clamping position.

Abstract: A master tool for a reception station on a press for shaping sheets of paper or cardboard, comprising a moving slide and a number of bars (1) adapted to form a grid for non-stop reception of blanks and a bottom separating tool comprising two boards (4, 5) adjustable on two transverse beams (9, 10) of the moving slide, the beams having top edges having the same profile, the profile of the top edge comprising a number of serrated recesses in shape matching the cross-section of the bars (1), the serrated recesses being adjusted to correspond to the transverse positions of the openings in the bottom blank-separating tool.

Abstract: The device comprises a lifting mechanism (1), a sheet-inserting means, means for detecting the front top level of the stack (32) connected to a computer acting on an electric motor (11) of the stack-lifting mechanism (1), and means for raising the stack (4). The detector (32) of the front level of the stack (4) comprises means for measuring the extent of variations in the level of the stack. The computer is also connected to a source of information (17) relating to the supply frequency in real time and to the nominal thickness of the sheets. The computer output is connected to a frequency-varying means for controlling the electric motor (11), the computer being designed so that the value of the signal appearing at its output is characteristic of the difference between the measured level of the stack (4) and the calculated level.

Abstract: Converting press for paper or cardboard sheets including a waste stripping station and/or a blanking station with a pull-out chase (1, 2, 3, 4) comprising a pair of horizontal transverse rails (5, 11) receiving an upper stripping tool, respectively a blanking tool, from which the first rail (5) is fixed compared to aforesaid chase and from which the second rail is movable in a longitudinal direction, and whose profile allows receiving and maintaining in an operational waste stripping position, respectively blanking position, either a pull-out chase of an upper tool or an upper stripping board, respectively blanking board.

Abstract: The machine controlled by the device comprises a set of cutting tools interchangeable in dependence on the blank to be cut, means adjustable in dependence on the jobs to be performed by each tool, and means for actuating the adjustable means. The control device comprises a memory (1) associated with each cutting tool in order to store the data relating to the characteristics of the tool and of the operations for adjusting the machine (5) in order to use the tool, reading means (2) for reading the data in the said memory, means (3) for displaying a menu relating to the data and control means (4) for generating and transmitting control signals (6, 7, 8) to the actuating means in dependence on the menu.

Abstract: Delivery station for a converting press for paper or carboard sheets with a transverse roller located downstream from the delivery area and a movable carriage downstream from the aforesaid roller (18), being able to receive a plurality of bars so as to form a non-stop blanking delivery rack, the aforesaid carriage being guided by a carrying device (4, 5) in longitudinal direction; the carrying device and the transverse roller are assembled in a vertically movable frame (1) suspended on both sides by chains (24) run by only one motor (19) through a transmission shaft (22); the vertical run of the delivery rack is adjustable between a high position and a low position, the low position being determined by the length of the lower blanking tool joggers.

Abstract: The braking device comprises at least one flexible braking means (1) extending across the trajectory of the sheets (2) and mounted so as to pivot around a transverse axis (4) so that its trajectory around the said axis intersects the trajectory of the sheets (2), the direction of rotation of the end of the said flexible braking means (1) and intersecting the trajectory of the sheets (2) being opposite the direction of motion of the sheets, and also comprises drive means for pivoting the braking means (1) in dependence on the longitudinal dimensions of the sheets (2) and the frequency with which they pass. The means driving the braking means (1) around the said transverse axis (4) comprise a variable-speed electromagnetic actuator (5) connected to control means which in real time record the parameters relating to the longitudinal dimension of the sheets and the frequency with which they pass.

Abstract: A device for positioning sheets in a station of a sheet-processing machine comprising a movable bearing surface for holding at least one edge zone of a sheet, actuators driving the bearing surface in the plane thereof, gripping means accompanying the motion of the bearing surface and adapted to grip or release the edge zone of the sheet between a sheet-gripping means (16) and the bearing surface. The sheet-gripping means (16) is connected to the bearing surface by at least one joint comprising a number of levers (10, 18) forming a parallelogram articulated around horizontal pivot axes (11, 13, 17, 19). A piston (24) comprising a permanently compressed spring eliminates the radial clearance between the pivot axes. Lateral clearance thereof is eliminated by a spring strip which is rigid in the transverse direction.

Abstract: A device for processing of printing defects detected in a printing machine which in a first phase delivers a printed support. The printing defects (20, 21, 22) on the support (1) are detected in a detection station. A database connected to the detection station can simultaneously store information relating to each detected printing defect. The processing device connected to the database can, in a second phase, process the stored information in order to evaluate the quality of overall printing of the printed support and can use various possible scenarios, even before the support (1) is cut in a third phase, to define all those portions (23) of the support which should be removed in order to improve the final quality of the printed product within the limit of a restriction in the number of portions which it has been agreed to cut out.

Abstract: A sheet-processing machine operating in cycles, inter alia a shaping press, during which a cyclic excess air pressure is produced in a covered part of the machine, where the covered part has an opening (6) on the perimeter of which a diaphragm is fixed, the diaphragm being made of an elastic material which is substantially impermeable and resistant to the oil lubricating the machine (9).

Abstract: This device comprises a frame carrying means for conveying blanks according to a substantially plane path and two parallel shafts (10, 11), which are mounted so as to be rotatable on both sides of the plane of said path and comprising tool supports (19a, 19b, 20a, 20b) for inducing a shearing between the adjacent edges of a cutting line during their displacement, in order to break nicks on the cutting line. Each parallel shaft (10, 11) comprises at least one tool support (19a, 19b, 20a, 20b) for connecting the shearing tools to said respective shafts (10, 11) and means for angularly (10a, 11a) and longitudinally positioning these tool supports (19a, 19b, 20a, 20b) on said respective shafts (10, 11).

Abstract: Device and method for the automatic register setting of printings printed by plate cylinders (6, 7, 8, n1) in a rotary machine using inks of a plurality of colors. The printing machine particularly comprises a succession of printing units (3, 4, 5, n), at least one pulse generator (23), two pull rollers (14, 15) located downstream of said printing units (3, 4, 5, n), means (7, 8, n1, 12, 13, n3) of correction to correct some register errors, scanning heads (24, 25, n6) each located near and downstream to the respective printing units (4, 5, n). Each printing unit (3, 4, 5, n) particularly includes one of said plate cylinders (6, 7, 8, n1) as well as one of said pressing cylinders (9, 10, 11, n2). Each pressing cylinder being controlled by one of the control units (20, 21, 22, n5).

Abstract: Device (1) for the longitudinal alignment of plate elements (2) within an infeed station of a machine working them. The aforementioned device is secured by two lateral brackets (9, 10) between which is settled a conveyor track for the said plate elements, comprising two plates (5, 6) folded downwise according to a line (7) non-perpendicular in the meaning of the shifting (3) of the said plate elements (2). The latter are moved downstream by means of at least two conveyor belts running around at least two pulleys (15, 16) secured between unmovable bearings (11-14) at the input of the said device. The device (1) has on its leading edge a protection plate (39) over which are flaps (30-32) movable and interdependent of a transverse shaft (24) connecting the leading edges of the two lateral brackets (9, 10). This shaft is moved by an alternate rotation between 0 and 45 degrees, synchronized with the production speed of the machine in order to allow the successive alignment of the said plate elements (2).

Abstract: This device comprises devices (11-13) for securing tools (10) to a supporting and heating plate (3). The heat exchange surface of the supporting and heating plate (3) is continuous, the securing devices (11-13) being arranged to permit securing of each of these tools (10) in any position within an adjusting range determined on the surface of the supporting and heating plate (3). This permits adjusting the position of, the securing the tools (10) to the supporting and heating plate (3). This device also comprises devices (7-9) for positioning the supporting and heating plate (3) on a removable frame (1) of a press for hot transfer of portions of metallic films onto a paper or cardboard substrate.

Abstract: This web feeding device comprises at least one spindle (11, 12, 13) pivotally mounted in a frame (14), each spindle connected to a pair of drive motors and longitudinally divided into two sections (11a, 11b; 12a, 12b; 13a, 13b) that are mounted so as to rotate independently of one another. Two drive mechanisms (8, 25; 9, 26; 10, 27) for these two sections (11a, 11b; 12a, 12b; 13a, 13b) are connected at the same end of the spindle (11, 12, 13). The section (11a, 12a, 13a) adjacent to this end is in the form of a tubular element pivotally mounted on an axial shaft (4, 5, 6). The tubular element is connected to one drive mechanism (25, 26, 27), and the end of the shaft (4, 5, 6) adjacent to the common end of the spindle (11, 12, 13) is connected to the other drive mechanism (8, 9, 10), whereas the other end of the shaft (4, 5, 6 ) is secured to the second section (11b, 12b, 13b) of the spindle.

Abstract: A conveying device for sheet-like workpieces having low specific gravity (21), such as paper or cardboard, comprises two median conveying elements (11, 12) arranged side by side along the path of the workpieces (21), for changing the orientation of the sheets or plates about a perpendicular axis. Separate drive mechanisms with adjustable speed (18) are connected to each of the median conveying elements (11, 12). A plenum (22) provided with a fan (23) is used to apply a downward air pressure to the workpieces (21), pressing them against the median conveying elements (11, 12) in order to transmit different speeds to each of the surface parts of the workpieces (21) in contact with the respective conveying elements (11, 12).

Abstract: A roller or belt correction device for lateral alignment, during converting, of partly folded workpieces in a folder-gluer, consists of a lower structure above which is mounted an upper structure pivoting in the horizontal plane. This upper structure comprises a row of conveying elements which are in contact with the lower plane surface of the workpieces and which are driven by a distinct means at adjustable speed. The device comprises a guiding element which is parallely movable to a axis materializing the initial virtual line against which the workpieces have been previously supported in their upstream conveying path before being rotated in a conveying device.