Abstract: The invention relates to a printhead assembly (10) comprising a printhead (12) and an interface plate (14) connected to the printhead (12), the printhead (12) having a flange (16) and a housing (18) extending from the flange (16), the interface plate (14) comprising an opening (20) and being placed over the housing (18) such that it abuts at the flange (16), a biasing spring (26) being provided which is connected to the housing (18), abuts at the interface plate (14) and exerts a biasing force onto the interface plate (14) so as to press it against the flange (16).

Abstract: A measuring tool (28) for a pressing station (16) of a cardboard processing machine (10), in particular a die-cutting and/or creasing machine, configured to be inserted between an upper platen (24) and a lower platen (26) of the pressing station, the measuring tool (28) comprising at least one sensor (30) composed of one or several distance sensors (32), the sensors (32) being configured to measure a vertical distance to a support surface (38) at a plurality of measuring points when the measuring tool (28) is inserted in the pressing station (16) and the pressing station is closed. Furthermore, a method for providing a compensation sheet (50) for a pressing station (16) of a cardboard processing machine (10) is provided.

Abstract: A method is provided for providing a compensation sheet (34) for an individual and specific pressing station unit (16) of a cardboard processing machine (10), in particular a die-cutting and/or creasing machine. The method comprises determining an unevenness of an upper platen (24) with respect to a lower platen (26) of a pressing station (16) during a pressing process, establishing at least one compensation sheet (34) with a varying thickness for compensating said unevenness, and producing said sheet (34). The sheet's shape does not depend on the processing job carried out by the machine. Furthermore, the method provides several compensation sheets (34, 34?), each sheet being optimized for a given operating pressure.

Abstract: The present invention relates to a digital printing module (22) comprising at least one print head (25) having a nozzle plate (27) provided with a plurality of nozzles (29). The print head is mounted in a rotatable chassis (106) allowing a rotation of the print head between a printing position (A) in which the nozzle plate is facing vertically upwards and a cleaning position (B) in which the nozzle plate is facing vertically downwards.

Abstract: A method is disclosed for adjusting a phase difference between at least a first printing unit (12) of a printing device (10) and a second printing unit (14) of the printing device (10), each printing unit (12, 14) comprising at least one printing head (16), wherein the at least first and second printing units (12, 14) are arranged with a distance to each other with respect to a paper travel direction (20). Moreover, a printing device (10) is disclosed.

Abstract: The present invention relates to a conveyor system (30) for transporting blanks (2?) in a converting machine (1). The conveyor system comprises an endless first conveyor belt (32a) and a support structure (38). The support structure (38) comprising a plurality of rollers (56), each roller being attached to a roller frame (54) and arranged in a line, the roller frames being connected to each other by a connection mechanism (62). The connection mechanism (62) is extendable and retractable in the direction of transportation, such that a contact length (Lc) of the first conveyor belt is modified and all rollers remain in contact with the first conveyor belt.

Abstract: The invention relates to a blanking station comprising a blanking tool (12), at least one blank receiving unit (14, 16) for receiving and piling of blanks (20) in a blank collecting space (22) in a piling direction, and at least one flexible guide (18), located between the blanking tool (12) and the receiving unit (14, 16), wherein the flexible guide (18) comprises at least one guiding surface (32) adapted for guiding the blanks (20), being oriented in parallel to the piling direction and arranged so as to define an outer contour of the blank collecting space (22), and wherein the flexible guide (18) further comprises at least one flexible portion (28), located in proximity to the blank receiving unit (14, 16), wherein the flexible portion (28) is elastically deformable in a first direction along the outer contour of the blank collecting space (22) and wherein the flexible portion (28) has a lower stiffness in the first direction than in a second direction perpendicular to the outer contour of the blank colle

Abstract: A method for manufacturing a patching sheet for a pressing station of a cardboard processing machine comprises obtaining a job recipe, the job recipe defining a model layout of creases to be applied in a blank being creased in the cardboard processing machine. Then, a blank is creased in the pressing station of the cardboard processing machine based on the model layout to obtain a trial sheet comprising creases, each of the creases in the trial sheet being associated to one of the creases of the model layout. An image of the creases in the trial sheet is measured by an imaging system. Based on the measured image, the quality of each crease in the trial sheet is computed to obtain a list of defective creases needing correction. For each defective crease, a thickness of a patch to be applied on the patching sheet for correcting the defective crease is determined to obtain a list of patches; and the patching sheet is built according to the list of patches. Further, a cardboard processing system is provided.

Abstract: A method for manufacturing a patching sheet for a pressing station of a cardboard processing machine, the method comprising the following steps: obtaining a job recipe, the job recipe defining a model layout of cuts to be applied in a blank being cut in the cardboard processing machine; cutting a sheet of blanks in the pressing station of the cardboard processing machine according to the model layout to obtain a trial sheet comprising cuts, each of the cuts in the trial sheet being associated to one of the cuts of the model layout; measuring, by an imaging system, an image of the cuts in the trial sheet; the location of said cuts being defined by the model layout computing, based on the measured image, the quality of each cut in the trial sheet to obtain a list of defective cuts needing correction; determining, for each defective cut, a thickness of a patch to be applied on the patching sheet for correcting the defective cut to obtain a list of patches; and building the patching sheet according to the list

Abstract: The invention relates to a mounting device (10) for mounting a supporting board (12) in a flatbed die cutting machine (2), having a support, first and second adjustment units (30), and an adjustable abutment unit (32), the adjustment units (30) and the abutment unit (32) being arranged spaced from each other at the support (11) for receiving the supporting board (12) in a position which is adjustable with respect to the support (11), the mounting device (10) having actuators (46, 56) associated with the adjustment units (30) and the abutment unit (32).

Abstract: The invention discloses a sheet processing machine with an alignment plate at the input. The sheets are piled against the plate, and during each machine cycle, the bottommost sheet is extracted and delivered to a gripper bar of the machine. The alignment plate can move precisely longitudinally and diagonally to adjust the position and the skew of the sheet for correct positioning in the gripper bar. The alignment plate is guaranteed to be kept vertical by using a pair of synchronized linear actuators on each side of the plate. The machine can adapt to varying sheet thickness by adjusting the gap below that plate thanks to a motorized gauge. To even better position the sheets, a set of abutments is provided after the plate, and at a fixed distance to the plate. The abutments are pivoting to get out of the way of the gripper bar when needed.

Abstract: The present invention relates to a feeder module for discharging sheets into a converting machine. The feeder module comprises a movable discharge conveyor comprising a plurality of belt conveyors which are configured to move between a discharge position (DP) in which the belt conveyors are contacting the lowermost positioned sheet in the stack and discharges said sheet, and a clearing position (CP) in which the conveyor belts are located underneath the loading surface.

Abstract: The invention relates to a method for improving the consistency of the color density over the printing width of an inkjet printer (10) comprising the steps of: Printing a 2-dimensional pattern (32), wherein the 2-dimensional pattern (32) has the same nominal print density over a printing width and varying nominal print densities in printing direction; Dividing the 2-dimensional pattern (32) in multiple columns (38) across the printing width; Recording with a camera (24) at least one color value for each nominal print density in each of the columns (38); Deriving a correction curve for each column (38) from the recorded color values; and Correcting printing signals and/or printing patterns with the correction curves. Furthermore, the invention relates to an inkjet printer (10).

Abstract: The present invention generally relates to a hybrid blanking frame for a sheet processing machine, a blanking system, and a sheet processing machine. The hybrid blanking frame comprises a circumferential frame enclosing an interior space. A movable bar is mounted between opposite side frame portions of the circumferential frame. The hybrid blanking frame is configured to support a full-sheet-delivery setup, a guillotine setup, and a quick-lock blanking setup.

Abstract: A sheet processing machine with a transfer mechanism for moving sheets along a handling direction of the sheet processing machine and with a waste evacuation device (36) for releasing the sheets. The transfer mechanism comprises a sheet handling element (28) for moving a sheet, the sheet handling element (28) comprising at least one sliding element (54). The sheet handling element (28) is adapted to release the sheet when passing the waste evacuation device (36). The waste evacuation device comprises at least one alignment element (38) adapted to interact with the at least one sliding element (54) for minimizing deformation of the sheet handling element (28) when passing the waste evacuation device (36).

Abstract: The present invention relates to a blank joining module for a converting machine. The blank joining module comprises an upper feeder device configured to feed and transport an upper blank (2b) and a lower blank (2a) towards a junction point (J) where the upper blank is superposed onto the lower blank. The blank joining module comprises a register control system comprising a sensing system and a position correction device (86) configured to displace the upper blank to be aligned to the lower blank.

Abstract: The invention relates to grasping system comprising a grasping head (15) for a sheet transporting device, in particular for transporting an insert sheet to be inserted between rows of folding boxes in a receptacle, the grasping head (15) having at least one support frame (80) and a plurality of aspiration elements (17, 18). The aspiration elements (17, 18) are mounted on holding elements (50) which are received on the support frame (80) so as to be displaceable with respect to the support frame (80).

Abstract: The invention relates to an inkjet printing system (10) and method for controlling the jetting ink viscosity. A printing head (16) comprises a first pressure sensor (20) located at a fluid inlet (26) and a second pressure sensor (22) located at a fluid outlet (28). A control unit (24) is configured to retrieve the volumetric flow (Q) from a supply pump (18) of the inkjet printing system (10) and the inlet and outlet pressures (P_in, P_out) from the pressure sensors (20, 22). The control unit (24) is further configured to calculate an actual flow resistance (R_a) and a required temperature change (?T) of the ink such that a calibrated ink viscosity (?_ref) is obtained.

Abstract: A sheet processing machine (10) with a jam detection device (44, 46), the jam detection device (44, 46) comprising a light emitting element and a light receiving element forming a light barrier in a detection zone (53, 78) of a processing station of the sheet processing machine (10). The jam detection device (44, 46) further comprises a control unit (48) being connected to the light receiving element and being adapted to register if the light barrier is interrupted.

Abstract: A reel support assembly (14) for a web material processing machine is described. The reel support assembly (14) comprises a support frame (16) and at least a first support arm unit (34a) having at least one holding stub (40) for mounting a reel (12) on the first support arm unit (34a). Furthermore, the reel support assembly (14) comprises an elevator unit (24) having a support element (26) on which a reel (12) may be placed. The support element (26) is supported on the support frame (16) in a vertically movable manner. Additionally, a hotfoil stamping machine (10) is presented which comprises such a reel support assembly (14). The reel support assembly (14) is arranged at an upstream end of the hotfoil stamping machine (10) with respect to a web travelling direction.