Abstract: The present invention relates to suction bar system for a converting machine (10), the suction bar system comprising at least one suction bar assembly (31) comprising a suction plate mounted on a transverse beam having an internal air supply channel (34). The suction plate (36) comprises a plurality of main airflow channels (48) wherein each of the main airflow channels (48) is provided with a first suction opening (46a) and a second suction opening 46b. The main airflow channel (48) is provided with a constricted section (S2) with a first connecting duct (50) configured to generate a pressure drop in the first suction opening (46a).

Abstract: The present invention relates to an alignment module (11) for a converting machine (1). The alignment module comprises an alignment device (30) having an upper pressing member (22), a lower conveyor (24) and a guide (26). The guide is further provided with a downwardly sloping inlet end (32), the inlet end being configured to direct a lateral portion of the blank under the guide, while contacting the lateral guiding surface (40) with an internal segment edge (S1, S2) of the blank, the internal segment edge being arranged closer to the central longitudinal axis of the blank than the lateral portion of the blank positioned under the guide.

Abstract: The present invention generally relates to a feeder device and a sheet-fed processing machine. The feeder device comprises a rotation mechanism, a displacement mechanism, and a feeder flap. The rotation mechanism is configured to cause a rotating movement of the feeder flap for supplying a sheet to be fed into the sheet-fed processing machine towards a reception device of the sheet-fed processing machine. The displacement mechanism is configured to cause a displacement movement of the feeder flap according to a displacement direction.

Abstract: The invention relates to an inspection device (42) for a converting machine (10), the inspection device comprising a camera (49) configured to capture an image of a portion of a blank (1) provided with a reference mark (30). The camera is arranged inside an external housing shroud (70), and wherein a thermoelectric element (78) is arranged between the camera and the external housing shroud.

Abstract: A method for fine adjustment of the position of ink drops printed by at least one printing head (12) of a printing device, the printing head (12) being a two-dimensional printing head (12) comprising a plurality of nozzles (30). In one method step, an ink drop is dispensed at a plurality of nozzles (30) of the at least one printing head (12) simultaneously to print an image, preferably at all nozzles (30) of the printing head (12). In another method step, the printed image is captured by a camera (20), wherein the camera (20) captures the pattern of dots printed by the printing head (12) and the captured pattern is compared to a pattern (36) of the nozzles (30) of the printing head (12).

Abstract: A method is provided for cutting, creasing and/or embossing a cardboard in a cardboard processing machine comprising a rotary die cutting machine, the rotary die cutting machine comprising a first rotating cylinder and a second rotating cylinder, wherein the first and the second cylinder has a cutting, creasing and/or embossing area and a compensation area that extends along the circumference of the respective cylinder. A continuous cardboard web printed with a plurality of printed sections is run between the two cylinders in a processing direction, wherein a printing length (I) of a printed section is shorter than a circumference of the rotating cylinders. Afterwards the cardboard web is pulled back in a direction opposite to the processing direction to such an extent that after a full rotation of the rotating cylinders the cutting, creasing and/or embossing area of the rotating cylinders meets the beginning of the second printed section.

Abstract: The present invention relates to a banding module (34) for applying bands around stacks (S) of sheet elements (2?). The banding module comprises a first and a second lateral guides (130a, 130b) configured to contact and guide lateral sides of the stack as it is introduced into the banding module. Each guide comprises a gap (G) which is aligned with a banding zone and allowing a band to pass through the gap and contact the stack.

Abstract: The present invention generally relates to a method for handling sheets by a die-cutting machine having a platen press with a cutting device. Using a lifting device, a first sheet and a second sheet are separated from a plurality of sheets and fed to the platen press. Using an alignment device, the first and the second sheet are aligned such that they reach a reception location simultaneously, in register, and stacked. Using a gripper bar, the stacked sheets are captured at the reception location and transported to the cutting device of the platen press. Since the sheets are stacked, they are cut simultaneously in a single cutting operation.

Abstract: A method for aligning printing heads (12) of a printing device is provided, the printing heads (12) being two-dimensional printing heads (12) comprising a plurality of nozzles (30). In one method step, an ink drop is dispensed at a plurality of nozzles (30) of every printing head (12) simultaneously to print an image, preferably at all nozzles (30) of every printing head (12). In another step, the printed image is captured by a camera (20) whose resolution may be smaller than the print resolution. The position and/or orientation of each of the printing heads (12) is determined based on the image captured by the camera (20) and the deviation of the position and/or orientation of each printing head (12) from a target position and/or orientation is determined. The position and/or the orientation of the printing heads (12) is adjusted based on the determined deviation. Moreover, a printing device (10) is provided.

Abstract: The present invention relates to a feeder module for a converting machine, the feeder module comprises an upper feeder assembly, and a lower feeder assembly comprising a loading surface configured to receive a stack of sheets. The upper feeder assembly (20) comprises a gauge (32), wherein a distance (d1) between a vertical distal end of the gauge and the loading surface defines a clearance through which a lowermost positioned sheet in the stack can pass at a time. A feed roll assembly (34) located downstream of the gauge comprises an upper feed roller (35a) and a lower feed roller (35b). The lower feeder assembly (22) and the lower feed roller are displaceable in the vertical direction.

Abstract: The present invention relates to an alignment module (11) for lateral alignment of blanks (2). The alignment module is configured to receive the blank between the upper pressing member (22) and a lower alignment conveyor (25) and convey the blank obliquely against a guide (26). The upper pressing member comprises a plurality of pressing rollers (42), comprising an upper pressing member (22) provided with a plurality of pressing rollers (42). At least some of the pressing rollers are connected to a respective actuator (54). The actuator is configured to displace the pressing roller (42) in the vertical direction, and wherein the alignment module further comprises a control unit (32) and a memory (34), wherein the control unit is configured to determine a required displacement for each pressing roller and actuate each respective actuator to perform the required displacement.

Abstract: The present invention relates to suction bar system for a converting machine (10), the suction bar system comprising at least one suction bar assembly (31) comprising a suction plate mounted on a transverse beam having an internal air supply channel (34). The suction plate (36) comprises a plurality of main airflow channels (48) wherein each of the main airflow channels (48) is provided with a first suction opening (46a) and a second suction opening 46b. The main airflow channel (48) is provided with a constricted section (S2) with a first connecting duct (50) configured to generate a pressure drop in the first suction opening (46a).

Abstract: The present invention relates to a feeder module for a blank joining module, the feeder module comprising an upper feeder device and a lower feeder device, each feeder device comprising a loading surface configured to receive a stack of blanks and each feeder device being configured to discharge the blanks one by one in a direction of transportation, and wherein the upper feeder device is displaceable in the direction of transportation such that the upper loading surface is horizontally offset in relation to the lower loading surface.

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