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公开(公告)号：US11969989B2
公开(公告)日：2024-04-30
申请号：US17759312
申请日：2021-01-20
申请人： BOBST BIELEFELD GMBH
CPC分类号： B41F31/02 , B41F31/04 , B41F35/008
摘要： A printing machine (10) comprises a doctor blade (14), a drive system (20) for urging the doctor blade (14) against a printing cylinder (16) of the printing machine (10), a sensor (32) adapted for sensing a force with which the doctor blade (14) is urged against the printing cylinder (16), and a mechanical locking element (34) adapted for locking the drive system (20) in its operating position.
Further, a method of operating a printing machine (10) is presented.-
公开(公告)号：US11691411B2
公开(公告)日：2023-07-04
申请号：US17455570
申请日：2021-11-18
申请人： Bobst Bielefeld GmbH
发明人： Frank Rudolph
CPC分类号： B41F27/005 , B41F5/24 , B41F27/1275
摘要： A method for attaching a printing plate (12), especially a flexographic printing plate, to a printing cylinder (14) is described. In a first step, the printing plate (12) is provided in a substantially flat condition. Thereafter, an outer circumference of the printing cylinder (14) is arranged adjacent to an edge of the printing plate (12). Subsequently, the printing cylinder (14) is translatorily moved over the printing plate (12) while rotating such that the printing plate (12) is rolled-up on the printing cylinder (14). Additionally, an apparatus (10) for attaching a printing plate (12) to a printing cylinder (14) is presented. The apparatus (10) comprises a printing plate support unit (16) having a substantially flat support surface (18) for supporting the printing plate (12) to be mounted on the printing cylinder (14), and a printing cylinder support unit (36) for supporting and moving the printing cylinder (14). The printing cylinder support unit (36) comprises a translatory drive means (42) for translatorily moving the printing cylinder (14) in a direction parallel to the support surface (18).
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公开(公告)号：US20230045510A1
公开(公告)日：2023-02-09
申请号：US17759061
申请日：2021-01-06
申请人： BOBST BIELEFELD GMBH
发明人： Volker CASPARI , Johannes SCHMIDT
摘要： A doctor blade system of a printing machine comprises a doctor blade (12), a blade support (14) and a clamping element (16), wherein the doctor blade (12) is arranged at a contact surface (24) on a front side (20) of the blade support (14) and pressed against the contact surface (24) by a pressing area (34) of the clamping element (16). The clamping element (16) has a bearing surface (40) arranged at a backside (27) of the blade support (14).
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公开(公告)号：US11413857B2
公开(公告)日：2022-08-16
申请号：US17326118
申请日：2021-05-20
申请人： Bobst Bielefeld GmbH
发明人： Jorg Fortmann , Alexander Sudermann
摘要： 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).
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公开(公告)号：US20220203697A1
公开(公告)日：2022-06-30
申请号：US17595415
申请日：2020-05-07
申请人： BOBST BIELEFELD GMBH
发明人： Andreas GARBSCH , Heiner VEDDER
IPC分类号： B41J2/21
摘要： 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.
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公开(公告)号：USD943666S1
公开(公告)日：2022-02-15
申请号：US35509728
申请日：2020-06-09
申请人： BOBST BIELEFELD GMBH
设计人： Antonio Longo
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公开(公告)号：US20220001681A1
公开(公告)日：2022-01-06
申请号：US17361021
申请日：2021-06-28
申请人： BOBST BIELEFELD GMBH
发明人： Rene HEINZE
摘要： A dryer unit (18) for applying a dryer gas to a sheet material inside a printing machine comprises a dryer body (20) having a first set (26) of dryer gas output openings (28). These openings (28) are arranged in a substantially regular pattern covering an application width (20a) of the dryer unit (18). Additionally, at least one dryer gas output slot (38) is arranged upstream the first set (26) of dryer gas output openings (28). Furthermore, a printing machine is presented which comprises such a dryer unit (18).
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公开(公告)号：US11052652B2
公开(公告)日：2021-07-06
申请号：US16302965
申请日：2017-05-24
申请人： BOBST BIELEFELD GMBH
发明人： Thomas Boje , Lorenz Landenberger
摘要： The invention is about a valve system to grip a sleeve over a mandrel in a press, in particular on how the gripper is brought toward and away from the mandrel and sleeve assembly. The gripper is disengaged from the sleeve, following first a straight path and then a helicoidal path, thanks to an ad-hoc slot machined on an axle. This allows to disengage the gripper and set it out of the way for handling the sleeve, with a single motor and a single instruction.
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公开(公告)号：US20210146677A1
公开(公告)日：2021-05-20
申请号：US17090617
申请日：2020-11-05
申请人： Bobst Bielefeld GmbH
发明人： Fred ROSTALSKI
摘要： A method for the determination of print parameters of a printing machine, particularly a flexographic printing machine, comprises the following steps: First, a print form (12) is provided and mounted on a print cylinder (14). Then, at least one high-resolution image of the surface of the print form (12) is recorded by means of a 3D camera (18). On the basis of the at least one high-resolution image a height profile of the print form (12) is determined and then a simulated print image is calculated on the basis of the height profile and an initial set of print parameters. Finally, optimized print parameters are determined by checking and/or varying the print parameters of the initial set. For this purpose, a simulated print image is calculated again after the print parameters have been varied.
In addition, a test stand is specified on which such a method can be carried out.-
公开(公告)号：US20190143667A1
公开(公告)日：2019-05-16
申请号：US16302965
申请日：2017-05-24
申请人： BOBST BIELEFELD GMBH
发明人： Thomas BOJE , Lorenz LANDENBERGER
摘要： The invention is about a valve system to grip a sleeve over a mandrel in a press, in particular on how the gripper is brought toward and away from the mandrel and sleeve assembly. The gripper is disengaged from the sleeve, following first a straight path and then a helicoidal path, thanks to an ad-hoc slot machined on an axle. This allows to disengage the gripper and set it out of the way for handling the sleeve, with a single motor and a single instruction.
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