Abstract: Device for detecting patterns on a travelling substrate, namely on a substrate being deposited on a sheet or on web matter, wherein the substrate is a metallized foil travelling in a travelling direction. The device comprises a housing for a first incidental beam issued from a first source of light, a second incidental beam issued from a second source of light, an optical measuring system, a photosensitive sensor respectively delivering beams reflected from the substrate and an electronic unit connected to a communication port. The optical measuring system is telecentric, the first incidental beam crosses a telecentric lighting system and the second incidental beam crosses an oblique lighting system.

Abstract: A device for successively transporting sheets in a platen press includes gripper bars with respective ends fixedly attached to two flexible of endless loop elements. Each loop element is engaged respectively with an intermittent drive wheel and at least one free wheel. A rectangular working chase and a movable platen arranged on both sides of the path of the grippers of the said bar. Nozzles are connected to a compressed air supply, for directing air jets towards the movable platen during a stopping phase of the gripper bars, in order to successively stop the sheets between the working chase and the movable platen. The nozzles are located below the transverse rear edge of the working chase.

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: The blanking station of a diecutting press comprises an upper cradle for a blanking device and gripper bars for conveying the sheets in progress. This upper cradle includes devices for the removable mounting alternately of a blanking device or of a delivery device of non-severed sheets. At least one cam for opening grippers of the said gripper bars, and the cam is mounted in a removable manner.

Abstract: To adjust peripheral register of engraved cylinders, the positions of a respective angular register mark arranged on each cylinder is measured with respect to a zero reference, and an angular printing mark characteristic of the position of the engraving is associated with each cylinder. The data of the job to be run are stored. The respective angular displacements of the engraved cylinders are indexed with respect to a reference cylinder in accordance with the job. By determining the web length separating two printing points of two successive engraved cylinders, this length is divided by the peripheral length of the cylinder and the remaining amount of the division is used for determining the angular indexing. Each cylinder is then brought into its angular indexed position, is first disconnected from a common transmission, and then all the cylinders are simultaneously reconnected to the transmission.

Abstract: A device for rotary conversion of a web or sheet material by cooperating cylindrical tools. The tools are arranged in a cassette. A driving device connects with the tools for rotating them. The cassette with the tools is placed in an adaptive cassette receiver. The driving device includes a motor and is supported on the lid of the cassette receiver. The cassette is placeable in and removable from the cassette receiver and is secured there and the driving device is connected to the tools.

Abstract: A method for tightening an embossing plate ring on a chuck of a rotary embossing press, wherein the chuck is intended to be connected to a heater for leading the embossing plate ring to a working temperature. Between the chuck and the embossing plate ring is a split transmission ring made of a material having an expansion coefficient which is higher than that of materials used for the chuck and the embossing plate ring to cause the blocking of the embossing plate ring onto the chuck at the working temperature of the embossing plate ring.

Abstract: A feeding and aligning device for a folder-gluer of blanks of folded and pasted cardboard boxes has at least one thrust to stop the blanks in order to crosswise align the angles between the various fold-pasted parts thereof before introducing them into a delivery area where these blanks are pressed. A mechanism introduces the blanks into the delivery area. The thrust has a driving mechanism that defines a moving trajectory for the thrust above the blanks, forming an acute angle with the conveying direction of these blanks which are moved by a conveyor that moves it along the conveying direction.

Abstract: A device for controlling delivery of sheets from a stack includes a lift for a stack of sheets. A sheet inserter removes sheets from the top of the stack to move them. A detector detects the front top level of the stack and measures the extent of variations in the level of the stack. A computer receives a measurement from the detector and acts on a first electric motor for the lift to raise the stack. A source of information connected to the computer relates to the supply frequency in real time and to the nominal thickness of the sheets. The computer output is connecting to a sheet supply frequency varying device for controlling the first motor to the lift. The computer is programmed so that the signal at its output is characteristic of the difference between the measured level of the stack and the calculated level thereof. An auxiliary supply device may support and raise the stack, based on the computer program, independently of the lift.

Abstract: An independent motor/reductor drives a conveyance device that feeds a converting press. The converting press includes a number of stations including a feeding station, a converting station, a waste stripping station and a delivery station. The conveyance device services the stations and includes two endless gripper bar chains to convey sheet material through the converting press. A transverse drive shaft drives the conveyance device under the control of the independent motor/reductor. The independent motor/reductor provides motion trajectories for the conveyance device that are independent of, but synchronized with, the serviced stations. The arrangement improves throughput, reduces machine wear and results in a simplified design.

Abstract: Method and apparatus for checking the quality of blanks processed with a machine processing blanks of at least a certain type, comprising: carrying out a registering for said possible blank types, feeding a register parameter (n) defining a required number of blanks per pile, loading a pile of blanks into a device, conveying the blanks of the pile throughout a registering area ensuring the scanning of the printing and/or diecutting quality of said blanks, defining which type the registered blank is the better related, stripping the blank if it has printing and/or diecutting defects, and piling up the registered blanks that were not stripped so as to pile up a new pile until it comprises n blanks, and repeating the steps, and apparatus for the foregoing.

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: An apparatus for conveying blanks or sheets that are arranged in piles includes a frame that has an input and an output and a pre-section that aligns the piles of blanks along a longitudinal conveying path. The pile of blanks is conveyed to a turn-over grip that swivels around the horizontal axis that extends transversely to the longitudinal conveying path. The turn-over grip includes two conveying units that are juxtaposed to one another with one of them being used to deliver the piles entering the turn-over grip and the other which is used to remove the piles after the turn-over grip has turned the pile upside down. A tightening mechanism presses one of the conveying units towards the other during the rotation of the turn-over grip. A pusher carriage is situated between the two conveying units and driven by a motor.

Abstract: A stack of sheets, e.g. cardboard, with each sheet having lines of cut longitudinally and/or transversely. Apparatus for breaking the nicks connecting two edges of line of cut on the stacked sheets includes a first support and transport moving longitudinally and a first clamp thereabove for clamping the sheets, a first device for separating the clamped sheets along a transverse cut line. A second support and transport device moves the sheets thereat transversely until positioned so that the longitudinal line of cut is positioned so that the sheets may be clamped and the stacked sheets may be separated transversely along the longitudinal line of cut. A conveyor for shifting the sheet transversely to reposition the longitudinal line of cut for separation.

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: 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: A 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). A pair of horizontal transverse rails (5, 11) supports an upper stripping tool for a waste stripping operation, or a blanking tool for a blanking operation. The first rail (5) is fixed relative to the chase and the second rail is movable in a longitudinal direction. The profile of the rails allows receiving and maintaining in an operational waste stripping position, a pull-out chase of an upper tool or an upper stripping board, and/or blanking board for blanking operation.

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: 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: A supply device for a machine working cardboard sheets. At least one conveying unit for the conveyance one by one of the sheets. A hold-down stop for preventing conveyance of a pile of the sheets above the conveying unit while permitting conveyance of the bottom sheet. A plurality of rising units at the conveying unit, the raising units being alternatively moveable by pivoting between an upraised position above the upper level of the conveying unit, and a lowered position at the highest aligned with that upper level. Each rising unit is connected to a programmable control unit in order to provide a single command respectively for each one of the rising units. An adjustable height wear surface shoe on each rising unit.