Patents Assigned to Bobst (Shanghai) Ltd
  • Patent number: 11420436
    Abstract: A device (10) for fastening a doctor blade (3) to a doctor blade (1) chamber body (2) comprising: at least one clamping flange (11) configured to press the doctor blade (3) onto the doctor blade (1) chamber body (2), at least a first fastener (20), and at least one second fastener (30), wherein the first fastener (20) comprises at least a first retaining section (21) having an upper end (21a) and a lower end (21b), a second section (22) different from the first retaining section (21), and wherein the second fastener (30) comprises at least a first portion (31) having at least one retaining element (34a), a second portion (32) having at least one retaining element (34b), an intermediate portion (33) devoid of retaining element and arranged between the first portion (31) and the second portion (32).
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: August 23, 2022
    Assignee: Bobst Lyon
    Inventors: Rene Bazin, Philippe Fleury, Julien Mattrand
  • Patent number: 11413857
    Abstract: A bearing assembly (26) is described. It is suitable for supporting a printing cylinder or an anilox roll in a printing machine and comprises at least one roller bearing (28, 30) being configured for receiving a shaft (12b, 14b, 16b) associated with the printing cylinder or the anilox roll. Additionally, it has a first support part (32) carrying the roller bearing (28, 30) and a second support part (34) being a carrier element of the printing machine or being configured for being mounted to a carrier element of the printing machine. Furthermore, a fluid chamber (36) is provided acting between the roller bearing (28, 30) and the second support part (34). Moreover, a printing machine is presented wherein a shaft (12b, 14b, 16b) associated with a printing cylinder or an anilox roll thereof is supported by such a bearing assembly (26).
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: August 16, 2022
    Assignee: BOBST BIELEFELD GMBH
    Inventors: Jorg Fortmann, Alexander Sudermann
  • Publication number: 20220242688
    Abstract: The invention relates to a suction brake for use with a sheet conveyor configured to convey a succession of flat elements in sheet form along a conveying path between a first location and a second location, the suction brake comprising: a hollow body having an interior cavity and a face that defines a plurality of suction apertures that communicate with the interior cavity; an obturator arrangement coupled to the hollow body and moveable with respect to the suction apertures; the obturator arrangement being moveable between an open position, in which the obturator arrangement exposes the suction apertures to a maximum extent, and a restricted position, in which the obturator arrangement occludes the suction apertures to a maximum extent. The obturator may rotate or be linearly translated in moving between the open and restricted positions.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 4, 2022
    Applicant: BOBST MEX SA
    Inventors: Yann DELLEY, Steven STOJANOVIC-ROTH, Jean-Claude REBEAUD
  • Publication number: 20220227143
    Abstract: A printing machine (10) for printing on a substrate having the form of a web (12) is described. It comprises a web entry unit (14) for receiving the web (12) on which a printing process is to be performed and a web exit unit (20) for dispensing the web (12) after the printing process. Furthermore, at least two printing units (26, 28, 30, 32, 34, 36, 38) are provided, wherein each of the printing units (26, 28, 30, 32, 34, 36, 38) is configured for applying an ink of a predetermined color on the web (12). Additionally at least two web paths (A, B) are provided between the web entry unit (14) and the web exit unit (20), each of the web paths (A, B) passing by all of the printing units (26, 28, 30, 32, 34, 36, 38). The web paths (A, B) pass the printing units (26, 28, 30, 32, 34, 36, 38) in a differing sequence. Moreover, a method for changing a color sequence within a printing process is presented.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 21, 2022
    Applicant: BOBST MEX SA
    Inventor: Wolfgang RUOFF
  • Patent number: 11390067
    Abstract: The present invention discloses a printing unit with an automated sleeve change process. A sleeve can be prepared for the next printing job while the current job is running, thereby reducing the changeover time. Also, the printing unit can handle printing sleeves of very different sizes without any special additional adjustments to be made. The printing unit translates the printing roller and the inking roller on a horizontal line to engage and dis-engage the printing roller. The invention is convenient for large printing sleeves because the sleeve can be slipped over a shaft that remains in the unit. The setup results in a very rigid system, which guarantees an excellent printing quality.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: July 19, 2022
    Assignee: BOBST FIRENZE S.R.L.
    Inventors: Francesco Biancalani, Federico D'Annunzio, Ludovico Frati, Giacomo Maccalli, Mauro Maccalli
  • Publication number: 20220219467
    Abstract: An inkjet printing machine for printing individual sheets comprises at least one printing station and a transport system (100) for transporting the individual sheets through the printing station, along a transport direction. The transport system (100) comprises at least one gripper conveyor (150) movable along the transport direction, for gripping one of the individual sheets defining a sheet position in transport direction. The transport system (100) further comprises at least one support conveyor (190) movable along the transport direction for supporting a region of the individual sheet, wherein the supported individual sheet and the support conveyor (190) are movable along the transport direction with respect to each other. The printing machine allows for efficient and flexible handling of individual sheets, in particular large format sheets of materials such as corrugated cardboard or other materials that have a certain degree of inherent stability.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 14, 2022
    Applicant: BOBST MEX SA
    Inventors: Olivier FREYMOND, Patrick WITTWER, Javier PEREZ, Nicolas MOSETTI, Mathieu GAVIN, David POUSAZ, Romain BERSIER
  • Publication number: 20220219925
    Abstract: A sheet processing device has a moveable beam (36) that moves in the vertical direction, a gripper bar (30) for gripping a sheet that travels through the sheet processing device (10), and a gripper bar locking device (40) that can lock the gripper bar (30) in a precise position. The gripper bar locking device (40) has a locking lever (68) that is pivoting between a rest position and a locking position. The locking lever (68) is connected to a vertical linear guide coupled with the moveable beam (36) resulting in a precise, compact and simple system to lock the gripper bar.
    Type: Application
    Filed: April 29, 2020
    Publication date: July 14, 2022
    Applicant: BOBST MEX SA
    Inventors: David GENTIL, Arnaud JONET
  • Publication number: 20220219926
    Abstract: A machine for processing individual sheets comprises at least one processing station, in particular in inkjet printing station, and a transport system (100) for transporting the individual sheets through the processing station, along a transport direction. The transport system (100) comprises at least one gripper conveyor (150) movable along the transport direction, for gripping one of the individual sheets defining a sheet position in transport direction. The transport system (100) further comprises at least one support conveyor (190) movable along the transport direction for supporting a region of the individual sheet, wherein the support conveyor (190) comprises a vacuum system for supporting the individual sheet on an interacting surface of the support conveyor, the vacuum system comprising a plurality of orifices in the interacting surface.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 14, 2022
    Applicant: BOBST MEX SA
    Inventors: Olivier FREYMOND, Patrick WITTWER, Javier PEREZ, Nicolas MOSETTI, Romain BERSIER, Mathieu GAVIN, Roberto VALTERIO
  • Patent number: 11383510
    Abstract: The invention discloses an inking system for a rotary printing machine, like a flexographic or rotogravure press. The inking system uses the nip area between two cylinders of the machine as the sole source for inking the printing cylinder. This results in an inking system with very little ink, thereby gaining in reaction time and ink waste.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: July 12, 2022
    Assignee: BOBST FIRENZE S.R.L.
    Inventor: Federico D'Annunzio
  • Publication number: 20220203669
    Abstract: A platen press with a press toggle mechanism (43) having a driving member (14) and a press toggle column (44). The press toggle column (44) comprises a driven member (38), a first toggle lever (46) assigned to the driven member (38) and a second toggle lever (48) assigned to the driven member (38). The first toggle lever (46) has a first contact surface (50) and the second toggle lever (48) has a second contact surface (52). Both toggle levers (46, 48) contact each other via their contact surfaces (50, 52), and wherein both contact surfaces (50, 52) are convex-shaped.
    Type: Application
    Filed: May 26, 2020
    Publication date: June 30, 2022
    Applicant: BOBST MEX SA
    Inventors: Christophe DE GAILLANDE, Guy DELALOYE, Steven STOJANOVIC-ROTH, Lukas TILLER
  • Publication number: 20220203697
    Abstract: A printing system for printing on a material has an ink formulation module (18) for providing an ink recipe, a printing unit (12), a sensor for generating color measurement data (CMD), and a control module (16) being connected to the sensor (14) and to the printing unit (12). The color measurement data (CMD) comprises at least one actual ink color value and the control module (16) is configured to receive at least one unit parameter (UP) from the printing unit (12), to receive the color measurement data (CMD) from the sensor (14) and to transmit the at least one unit parameter (UP) and the color measurement data (CMD) to the ink formulation module (18). Moreover, the ink formulation module (18) is configured to create at least one adjusted recipe (AR). Furthermore, a method for adjusting an ink recipe of a printing system (10) is provided.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 30, 2022
    Applicant: BOBST BIELEFELD GMBH
    Inventors: Andreas GARBSCH, Heiner VEDDER
  • Publication number: 20220194072
    Abstract: A hot foil stamping press has a pressing system for pressing a foil onto a sheet, a blow unit which is positioned at a distance to the pressing system for directing a stream of gas between the sheet and the foil. The stream of gas to detaches the foil from the sheet after each stamping cycle. A gripper bar is arranged between the blow unit and the pressing system for gripping the sheet. A flow guiding element is arranged between the blow unit and the pressing system, preferably on the gripper bar, for directing the gas from the blow unit between the sheet and the foil. Said element avoids the losses in the stream of gas due to the aperture that exist between the grippers in a typical gripper bar.
    Type: Application
    Filed: March 24, 2020
    Publication date: June 23, 2022
    Applicant: BOBST MEX SA
    Inventor: David GENTIL
  • Publication number: 20220194730
    Abstract: A gripper assembly for recovering a layout (22) from a sheet material (12) is presented. It comprises a vacuum gripper (26) with a gripper body (32) on which an array of air flow openings (34a, 34b) is arranged. Air flow openings (34a) associated with one or more blanks (20) of the layout (22) are selectively open and air flow openings (34b) associated to waste (28) of the sheet material (12) are selectively closed. Additionally, an apparatus for recovering a layout (22) from a sheet material (12) comprising such a gripper assembly is described. Furthermore, a method for separating a layout (22) from waste (28) of a sheet material (12) is explained.
    Type: Application
    Filed: March 17, 2020
    Publication date: June 23, 2022
    Applicant: BOBST MEX SA
    Inventors: Paul HORNICK, Yannick ROULIN, Roberto VALTERIO
  • Publication number: 20220194074
    Abstract: A clamping shaft (12) for a rotationally driven part (14) is described. It comprises at least one fluid chamber (28a, 28b) being located inside a shaft body (16) and being delimited by a piston (30a, 30b) and a cylinder part (32a. 32b). Additionally, the fluid chamber (28a, 28b) is delimited by an elastic clamping region (24a, 24b) having a first diameter if the piston (30a, 30b) and the cylinder part (32a, 32b) are in a first relative position, and a second diameter if the piston (30a, 30b) and the cylinder part (32a, 32b) are in a second relative position. Furthermore, a preloading unit (38) is provided, biasing the piston (30a, 30b) and the cylinder part (32a, 32b) towards the second relative position. Moreover, a printing cylinder unit (10) of a printing machine is presented comprising such a clamping shaft (12). Also, a method for operating a clamping shaft (12) is explained.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 23, 2022
    Applicant: BOBST BIELEFELD GmbH
    Inventors: Alexander SUDERMANN, Jörg FORTMANN
  • Publication number: 20220184935
    Abstract: A hot foil stamping press with a pressing table (10) on which a sheet can be advanced, a pressing system (20) for pressing a foil (14) onto the sheet, a guiding system (18) for guiding the foil (14) over the sheet, the guiding system (18) defining a foil transportation path which extends across the path along which the sheet is being advanced, a holder (11) for receiving a supply (12) of foil, and a discarding system (22) for the used foil, the holder being arranged at an operator side of the press.
    Type: Application
    Filed: March 20, 2019
    Publication date: June 16, 2022
    Applicant: BOBST MEX SA
    Inventors: Christophe DE GAILLANDE, Christoph VOLLMER, Haoming SONG
  • Publication number: 20220176669
    Abstract: The unit for forming a plate element (2) for the continuous flow manufacturing of folding boxes (CA1, CA2) from plate elements (3), the plate elements (3) being successively inserted into the unit (2) and moving in a feed direction (FD), comprising pairs of rotary cylindrical shafts (2001-2031, 2002-2032), carrying forming tooling, which forms the plate elements (4) using slitting, creasing and cutting operations, comprising a cutting unit (21), and pairs of rotary cylindrical shafts (2001-2031, 2002-2032),
    Type: Application
    Filed: March 6, 2020
    Publication date: June 9, 2022
    Applicant: BOBST LYON
    Inventor: Phillippe FLEURY
  • Publication number: 20220182556
    Abstract: This invention is about an imaging system that uses conventional cameras and a single laser line to perform quality control at the output of a converting machine or a press. The system uses several cameras distributed over the width of the printed sheets. Thanks to the laser line, it can reconstruct the complete image of the printed matter even when the sheets are not perfectly flat or at varying height, compensating geometric as well as photometric distortions. The use of conventional cameras results in a cost effective system.
    Type: Application
    Filed: March 18, 2020
    Publication date: June 9, 2022
    Applicant: BOBST MEX SA
    Inventors: Francis PILLOUD, Pablo ANTOLINEZ, Olivier PORRET
  • Publication number: 20220176493
    Abstract: The present invention discloses a method to calibrate a laser cutting machine without stopping the production. The method is adapted to laser cutting machine which use a conveyor belt to convey the sheets while cutting them with the laser. The method allows to place calibration marks at locations on the sheet that are convenient according to the production job, thereby minimising the waste of material.
    Type: Application
    Filed: March 18, 2020
    Publication date: June 9, 2022
    Applicant: BOBST MEX SA
    Inventors: Philippe GUGLIELMETTI, Paul PIRON
  • Publication number: 20220176691
    Abstract: An ink supply system (10) comprises an ink chamber (12); an ink line (14) with a Venturi nozzle (16), wherein the ink chamber (12) has an inlet (18), which is connected to the ink line (14) upstream of the Venturi nozzle (16), and an outlet (24), which is connected to the suction side of the Venturi nozzle (16); an ink reservoir (30) from which the ink is transferred by a pump (28) to the inlet (18) and into the ink line (32); and an ink return line (32), which connects the downstream end of the Venturi nozzle (16) with the ink reservoir (30).
    Type: Application
    Filed: March 24, 2020
    Publication date: June 9, 2022
    Applicant: BOBST BIELEFELD GmbH
    Inventor: Michael KARAKATSANIS
  • Publication number: 20220156755
    Abstract: A method for providing authenticity information has the following steps: a) providing a blank packaging (11) for a product to a printing machine (12), b) receiving or generating a template of the visual identifier (40) by the printing machine (12), c) applying, in particular printing, at least the visual identifier (40) on the packaging (11) by the printing machine (12), d) providing the packaging (11) having the visual identifier (40) to the quality control unit (14), e) receiving a packaging (11) for a product by a quality control unit (14), the packaging (11) having a visual identifier (40), f) reading the visual identifier (40) by the quality control unit (14), g) creating a first block (B), being a block of a blockchain, based on the visual identifier (40) by the quality control unit (14), the block comprising information about the visual identifier (40) and information about the packaging (11), and h) providing the first block (B) to the associated blockchain network (20) by the quality control unit
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Applicant: BOBST MEX SA
    Inventor: Stylianos MANOUSAKIS