EP3686012B1 - Dispositif d'impression rotatif, montage de groupe d'impression pour un dispositif d'impression rotatif et procédé de fonctionnement d'un dispositif d'impression rotatif - Google Patents

Dispositif d'impression rotatif, montage de groupe d'impression pour un dispositif d'impression rotatif et procédé de fonctionnement d'un dispositif d'impression rotatif Download PDF

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Publication number
EP3686012B1
EP3686012B1 EP19214197.6A EP19214197A EP3686012B1 EP 3686012 B1 EP3686012 B1 EP 3686012B1 EP 19214197 A EP19214197 A EP 19214197A EP 3686012 B1 EP3686012 B1 EP 3686012B1
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EP
European Patent Office
Prior art keywords
printing
unit structure
printing unit
rotary
motor
Prior art date
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EP19214197.6A
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German (de)
English (en)
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EP3686012A1 (fr
Inventor
Fabian Krause
Dirk Schreckenbach
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Mayr Melnhof Karton AG
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Mayr Melnhof Karton AG
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Priority to PL19214197T priority Critical patent/PL3686012T3/pl
Publication of EP3686012A1 publication Critical patent/EP3686012A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders

Definitions

  • the invention relates to a rotary printing device according to the preamble of patent claim 1. Further aspects of the invention relate to a printing unit structure for a rotary printing device and a method for operating a rotary printing device.
  • a side and circumferential register mechanism for a printing machine which has cooperating elongate actuating means which are rotatably driven by remote-controlled motors to adjust the position of a plate cylinder laterally and circumferentially by thrust bearings which carry the ends of the controls next to the end of the plate cylinder.
  • One of the actuating means is in the form of an elongated shaft which has an external thread on its outer surface. The shaft is used to carry out a lateral position register.
  • the DE 103 52 619 A1 describes a web-fed rotary printing press for printing one or more webs.
  • a page register control / regulation aligns a print image as a whole in its axial position.
  • a forme cylinder or a printing forme located on the forme cylinder is moved axially relative to the web by means of an adjusting means.
  • the EP 1 110 722 A1 and the DE 41 38 479 A1 disclose rotary printing devices comprising the features of the preamble of claim 1.
  • the invention is based on the object of creating a rotary printing device, a printing unit structure and a method of the type mentioned at the beginning which enables an improved compensation of errors occurring during the operation of the rotary printing device.
  • a first aspect of the invention relates to a rotary printing device.
  • the rotary printing device comprises at least one printing unit structure which has at least one printing cylinder for printing a printing medium. Furthermore, the rotary printing device comprises at least one movement device which is set up to move the at least one printing unit structure relative to a device component of the rotary printing device and against at least one transverse force acting on the at least one printing cylinder during operation of the rotary printing device in the direction of a target position of the at least one printing unit structure .
  • the rotary printing device can also be referred to as a rotary printing press.
  • the printing medium can be guided along the printing cylinder for printing, with ink applied to the printing cylinder being able to be transferred to the printing medium.
  • the device component can be designed, for example, as a machine stand of the rotary printing device.
  • ink can also be stripped from the at least one printing cylinder using a squeegee of the rotary printing device or the printing unit structure and the printing medium can be glued, for example to another printing medium.
  • the transverse force can act on the at least one printing cylinder during printing, when the ink is stripped off and when the printing medium is glued.
  • the transverse force or at least a transverse force component of the transverse force can act in the direction of a cylinder center axis of the pressure cylinder.
  • the printing unit structure can comprise at least one fixing component which can be designed to be coupled to the movement device in order to displace the printing unit structure, that is to say the at least one printing cylinder, together with the fixing component.
  • the fixing component can be designed in various ways and can also be connected in one piece to the pressure cylinder. It is conceivable here to design the fixing component as a coupling area which is arranged on the at least one printing cylinder and on which the movement device can act, that is to say, for example, can bring about an exertion of force to move the at least one printing unit structure.
  • the fixing component can also be designed, for example, as a cylinder shaft on which the pressure cylinder can be received and on which the movement device can act.
  • the fixing component and the movement device can be designed for force-transmitting coupling with one another.
  • the at least one movement device comprises at least one linear motor, which has motor components for moving the at least one printing unit structure in the direction of the target position, of which a first motor component is held on the at least one printing unit structure and is linearly movable relative to a second motor component .
  • Moving the at least one printing unit structure in the direction of the target position using the at least one linear motor is advantageous because the linear motor can be used to react particularly quickly to the transverse force, so that, for example, register deviations can be counteracted particularly quickly.
  • the register deviations can also be referred to as register errors.
  • the linear motor enables particularly fast movement speeds of the printing unit structure to be achieved and thus a particularly rapid movement of the printing unit structure in the direction of the desired position.
  • the at least one linear motor By means of the at least one linear motor, in particular a compensation force counteracting the transverse force can be exerted on the printing unit structure so quickly that the transverse force can be compensated before it leads to register deviations.
  • the use of the at least one linear motor thus enables an overall improved compensation of the Operation of the rotary printing device occurring errors, to which register deviations are to be counted.
  • One of the motor components can be designed as a rotor of the at least one linear motor and another of the motor components can be designed as a stator of the at least one linear motor.
  • the first motor component can be designed as a rotor and the second motor component as a stator.
  • the first motor component can be designed as a stator and the second motor component as a rotor.
  • the rotor of the linear motor can topologically correspond to a stator of a rotating electric motor and the stator can topologically correspond to a rotor of the rotating electric motor.
  • the first motor component can be moved exclusively linearly relative to the second motor component.
  • the first motor component for moving the at least one printing unit structure in the direction of the desired position can be moved exclusively linearly and without rotation relative to the second motor component. This advantageously enables torque-free operation of the at least one linear motor during the movement of the at least one printing unit structure in the direction of the setpoint position, so that accordingly no torque support of the linear motor is required.
  • the second motor component can preferably be held stationary relative to the first motor component, as a result of which a particularly precise, needs-based movement of the at least one printing unit structure can take place in a simple manner.
  • the second motor component can be fixed, for example, on a frame or on the device component of the rotary printing device.
  • the device component can be designed, for example, as a machine stand of the rotary printing device.
  • the frame can be assigned to the rotary printing device.
  • the rotary printing device can comprise the frame.
  • the at least one printing unit structure is designed as a printing unit carriage and has respective rollers and / or wheels for supporting a weight force of the at least one printing unit structure on a contact surface.
  • rollers or wheels enable a particularly low-friction movement of the printing unit structure, which is designed as a printing unit carriage.
  • the rollers or wheels enable a particularly low-cost movement of the Printing unit build-up from standstill, with particularly low static friction to be overcome for moving.
  • This enables the at least one linear motor to accelerate the printing unit structure, which is designed as a printing unit carriage, to a particularly high degree.
  • the movement of the printing unit structure in the direction of the target position can take place correspondingly quickly using the motor components of the linear motor.
  • the footprint can be assigned to respective rails on which the rollers or wheels can roll.
  • the rails can be assigned to the rotary printing device. Such rails enable a particularly low-friction movement of the printing unit structure, which is designed as a printing unit carriage.
  • the rotary printing device comprises at least one control device, which is set up to control the linear motor in the event of a deviation of the at least one printing unit structure from the target position in order to thereby bring about a relative movement between the motor components and thereby the at least one printing unit structure in the direction of the To move target position.
  • the control device can generally be designed as a register control system.
  • the at least one linear motor controlled and regulated by means of the control device can counteract any deviation, which is oriented along a cylinder center axis of the printing cylinder and caused by the transverse force, and which can also be referred to as a lateral offset.
  • the deviation (the lateral offset) can not only be compensated for again after it has arisen, but can also be effectively limited due to a particularly high movement speed that can be achieved by means of the at least one linear motor, even while it arises.
  • the rotary printing device comprises at least one displacement sensor which is set up to detect the deviation from the target position and which transmits signals is coupled to the control device.
  • the displacement sensor can be fixed to the facility component, for example.
  • the displacement sensor can preferably be designed as a contactless displacement sensor, which enables wear-free measurement of the deviation on the basis of the displacement sensor.
  • the first motor component and the second motor component for moving the printing unit structure in the direction of the target position are arranged without contact with one another.
  • the expression that the first motor component and the second motor component for moving the printing unit structure in the direction of the target position are arranged without contact with one another is to be understood here as meaning that the first motor component and the second motor component move during the movement of the printing unit structure (based on the at least one linear motor in the direction of the target position).
  • the first motor component and the second motor component can preferably overlap without contact in order to move the printing unit structure, so that not only the occurrence of mechanical friction can be avoided, but the motor components can also be arranged relative to one another in a particularly space-saving manner.
  • the at least one printing unit structure designed as a printing unit carriage, is free of service brakes which act on its respective rollers and / or wheels in order to delay the printing unit structure.
  • This is advantageous since it is thus possible to completely dispense with service brakes other than the at least one linear motor, since the printing unit structure, which is designed as a printing unit carriage, is both accelerated and decelerated by means of the at least one linear motor can.
  • the at least one printing unit structure comprises at least one drive motor for driving the at least one printing cylinder. This is advantageous because the printing unit structure can thereby be used in a particularly flexible manner, drive devices for driving the printing cylinder that are separate from the printing unit structure can be dispensed with.
  • the at least one printing unit structure comprises at least one clutch, via which the at least one drive motor can be coupled to the at least one printing cylinder in a torque-transmitting manner.
  • the clutch allows coupling in, which enables torque transmission between the drive motor and the pressure cylinder, and disengagement, in which the torque transmission between the drive motor and the pressure cylinder is interrupted, particularly as required.
  • the at least one printing unit structure comprises at least one impression roller, by means of which the printing medium can be pressed against the at least one printing cylinder when it is being printed using the at least one printing cylinder.
  • This is advantageous because it enables the printing medium to be trapped between the impression roller and the printing cylinder by the printing unit structure.
  • the printing medium can be printed under its guidance or passage between the impression roller and the printing cylinder when the rotary printing device is in operation.
  • the at least one printing unit structure comprises at least one ink tray for providing ink for the at least one printing cylinder. This is advantageous because the printing unit structure can be used particularly flexibly, in which case ink containers separate from the printing unit structure for supplying the printing cylinder can be dispensed with.
  • a second aspect of the invention relates to a printing unit structure for a rotary printing device according to the first aspect of the invention.
  • the printing unit structure comprises a fixing component for fixing one of the motor components of the linear motor of the at least one movement device.
  • the fixing component can preferably be designed to establish and release a connection between this motor component and the printing unit structure or the at least one printing cylinder without tools. For example, using the fixing component, a clamping connection can be established and released as this connection without tools.
  • the fixing component can therefore be designed to clamp the motor component.
  • a third aspect of the invention relates to a method for operating a rotary printing device in which at least one printing unit structure of the rotary printing device, which has at least one printing cylinder, is used to print a printing medium, and in which at least one movement device of the rotary printing device is used to relative to the at least one printing unit structure a device component of the rotary printing device and against at least one transverse force acting on the at least one printing cylinder during operation of the rotary printing device in the direction of a target position of the at least one printing unit structure.
  • the at least one printing unit structure is moved in the direction of the target position by motor components of at least one linear motor of the at least one movement device, a first motor component of the motor components being held on the at least one printing unit structure and being moved linearly relative to a second motor component of the motor components.
  • the second motor component can be held stationary while the at least one printing unit structure is being moved.
  • the first Motor component are moved relative to the stationary held second motor component.
  • the method advantageously enables an improved compensation of errors occurring during the operation of the rotary printing device.
  • the at least one printing unit structure is designed as a printing unit carriage and has respective rollers and / or wheels for supporting a weight force of the at least one printing unit structure on a contact surface.
  • the at least one printing unit structure is moved in the direction of the target position as a function of a relative offset between the at least one printing unit structure and at least one additional printing unit structure of the rotary printing device that is upstream or downstream of the at least one printing unit structure when printing the printing medium.
  • This is advantageous because it reacts effectively to the relative offset between the at least one printing unit structure and the additional printing unit structure, and errors (for example registration errors) can be avoided or at least reduced as a result.
  • the target position of the at least one printing unit structure can be determined as a function of the relative offset with the aid of a control device of the rotary printing device.
  • the target position can generally correspond to that position of the at least one printing unit structure in which the errors can be avoided or at least minimized.
  • upstream is to be understood in the context of the disclosure that the additional printing unit structure can be used for processing, ie for printing, the printing medium when the rotary printing device is operated.
  • downstream is to be understood in the context of the disclosure, that when the rotary printing device is operated, the additional printing unit structure can be used for processing, that is to say for printing, the printing medium after the at least one printing unit structure.
  • the at least one printing unit structure as a function of the relative offset between the at least one printing unit structure and the additional printing unit structure upstream of the at least one printing unit structure and as a function of a further relative offset between the at least one printing unit structure and one, the at least one Printing unit structure downstream, further additional printing unit structure is moved in the direction of the target position. This is advantageous because it allows any errors that would occur due to the relative offset and additionally or alternatively due to the further relative offset to be compensated or at least minimized with little effort on the basis of the movement of the at least one printing unit structure.
  • Fig. 1 shows an example of a schematic representation of a rotary printing system 100 known from the prior art.
  • the rotary printing system 100 comprises a printing unit carriage 112, which has several rollers 132, 134.
  • the printing unit carriage 112 can roll on a running rail 136 of the rotary printing system 100 using the rollers 132, 134 and can be moved linearly and relative to a machine stand 124 of the rotary printing system 100.
  • the printing unit carriage 112 includes an ink tray 114, a printing cylinder 116 and an impression roller 118.
  • the printing unit carriage 112 includes a drive motor 122 for driving the printing cylinder 116 and a coupling 120 for coupling and decoupling a torque transmission between the drive motor 122 and the printing cylinder 116 as required.
  • the rotary printing system 100 furthermore comprises a servomotor 126 and a pneumatic cylinder 128, which enables a mechanical coupling between the printing unit carriage 112 and the machine frame 124 via a clamping device 130 of the rotary printing system 100.
  • the printing unit carriage 112 can be brought up to the machine stand 124 of the rotary printing system 100, which can also be referred to as a printing unit, by an operator via the running rail 136, with the rollers 132, 134 being able to roll on the running rail 136.
  • the clamping device 130 can be activated, for example, by pressing a button and enables the printing unit carriage 112 to be clamped to the pneumatic cylinder 128, as a result of which the printing unit carriage 112 can then be held on the machine stand 124 via the pneumatic cylinder 128.
  • a tensile force (not shown) acting in the direction of the machine stand 124 can be exerted on the printing unit carriage 112 by means of the pneumatic cylinder 128.
  • a control device 140 can be used to control the servomotor 126 in a control mode, whereby the servomotor can move the printing unit carriage 112 away from the machine stand 124, i.e. to the left in the plane of the drawing or in the opposite direction, which is indicated by a double arrow which illustrates a direction of movement 138 of the printing unit carriage 112 that can be predetermined by the servomotor 126 is shown.
  • a tensile force and, additionally or alternatively, a thrust force act on the pneumatic cylinder 128, depending on the direction in which the servomotor 126 moves the printing unit carriage 112 in accordance with the direction of movement 138.
  • the servomotor 126 can, for example, move the printing unit carriage 112 away from the machine stand 124 and thus to the left, but one based on the pneumatic cylinder 128
  • the pneumatic force used is not sufficient to pull the printing unit carriage 112 in the opposite direction, that is to say in the direction of the machine stand 124, during normal operation. If the pressurization of the pneumatic cylinder 128 with compressed air is increased, increased wear and tear of a servo gear of the servo motor 126 can occur in control mode. In addition, it may happen that the servomotor 126 is no longer sufficient to bring about a movement of the printing unit carriage 112 against the pneumatic force generated with the aid of the pneumatic cylinder 128.
  • dead times can occur in regular operation, which can have a negative effect on the printing performance and quality of a print register of the rotary printing system 100.
  • these dead times are difficult to interpret for the operator.
  • Fig. 2 and Fig. 3 each show schematic representations of an exemplary variant of a rotary printing device 10, by means of which the problems mentioned can be at least largely solved.
  • the rotary printing device 10 can provide improved compensation for errors that occur during the operation of the rotary printing device 10.
  • the rotary printing device 10 comprises a printing unit structure 20, which in the present case has a printing cylinder 30 for printing a printing medium 12.
  • the print medium 12 is present only in Fig. 3 indicated schematically and can be designed, for example, as a paper web or as a cardboard web.
  • the rotary printing device 10 can generally also be designed as a rotary printing machine and be referred to as such.
  • the rotary printing device 10 can be designed as a gravure printing machine.
  • the rotary printing device 10 also includes a movement device 50.
  • the movement device 50 is designed and set up to move the printing unit structure 20 relative to a device component 14 of the rotary printing device 10 and against one, when the Rotary printing device 10 to move the transverse force F_Q acting on the at least one printing cylinder 30 in the direction of a target position P_S of the printing unit structure 20.
  • the transverse force F_Q and the set position P_S are exemplified in Fig. 3 shown.
  • the printing unit structure 20 comprises at least one drive motor 40 for driving the printing cylinder 30, as well as a coupling 42, via which the drive motor 40 can be coupled to the printing cylinder 30 in a torque-transmitting manner.
  • the printing unit structure 20 also includes an impression roller 32, by means of which the printing medium 12 can be adapted to the at least one printing cylinder 30 when it is being printed using the printing cylinder 30.
  • An ink pan 26 of the printing unit structure 20 serves at least to provide ink for the printing cylinder 30.
  • the printing unit structure 20 can, as in Fig. 2 and Fig. 3 Shown, for example, be designed as a printing unit carriage and have respective rollers 22, 24 and additionally or alternatively to the rollers 22, 24 respective wheels, not shown here, for supporting a weight F_G of the printing unit structure 20 on a contact surface S_A.
  • the contact area S_A can be assigned to respective rails S which are parallel to one another and on which the rollers 22, 24 can roll.
  • the rails S can be assigned to the rotary printing device 10.
  • the printing unit assembly 20 designed as a printing unit carriage, can be completely free of service brakes acting on its respective rollers 22, 24 or wheels in order to decelerate the printing unit assembly 20, as in FIG Fig. 2 and Fig. 3 is shown. Instead of using such service brakes, the printing unit structure 20 can be decelerated and accelerated exclusively via the movement device 50.
  • the movement device 50 comprises a linear motor 60, which is used to move the printing unit structure 20 in the direction of the target position P_S according to a a linear relative movement R, illustrated by a double arrow.
  • the linear motor 60 alone can be used to delay and accelerate the printing unit structure 20 relative to the device component 14, for example.
  • the linear motor 60 in the present case has two motor components 62, 64, of which a first motor component 62 is held on the printing unit structure and can be moved linearly relative to a second motor component 64, which is held stationary with respect to the first motor component 62.
  • the first motor component 62 can only be moved linearly and thus free of rotation and rotation-free relative to the second motor component 64, as a result of which the linear motor 60 enables the printing unit structure 20 to be moved particularly precisely and directly.
  • the second motor component 64 can be held stationary on the device component 14, which is designed as a machine stand in the present case, which is not further illustrated here.
  • the second motor component 64 can be held stationary on a frame 16, as in FIG Fig. 2 and Fig. 3 shown.
  • the rotary printing device 10 can include the frame 16.
  • the first motor component 62 and the second motor component 64 are arranged to move the printing unit structure 20 in the direction of the setpoint position P_S without contact with one another.
  • the printing unit structure 20 comprises a fixing component 44 for fixing one of the motor components 62, 64 of the linear motor 60 of the movement device 50.
  • the fixing component 44 is designed in the present case to fix and hold the first motor component 62 on the printing unit structure 20.
  • the fixing component 44 can be fixed to a housing 21 of the printing unit structure 20, for example.
  • the rollers 22, 24 can also be rotatably mounted on the housing 21.
  • the paint tray 26, the drive motor 40 and the coupling 42 can also be mounted on the housing 21.
  • the rotary printing device comprises 10 a control device 80.
  • the control device 80 can generally be designed as a register control system of the rotary printing device 10.
  • the control device 80 is set up and designed to control the linear motor 60 in a, in Fig. 3 indicated deviation A of the printing unit structure 20 from the target position P_S to thereby cause the relative movement R between the printing unit structure 20 and the device component 14 (and the frame 16) and at the same time between the motor components 62, 64 and thereby the at least one printing unit structure 20 in the direction the set position P_S to move.
  • the target position P_S corresponds to that position of the printing unit structure 20 in which the printing medium 12 can be printed with as few errors as possible, ideally without errors, so that, for example, register errors or register errors, in particular page register errors, can at least largely be avoided or even excluded.
  • the deviation A of the (entire) printing unit structure 20 is illustrated only in the area of a printing cylinder shaft 34 by means of a dashed illustration of one end of the printing cylinder shaft 34.
  • the printing cylinder 30 can be rotatably supported, for example on the ink pan 26, via the printing cylinder shaft 34, wherein the printing cylinder shaft 34 can be supported and rotatably mounted, for example, on respective bearings not shown here. These bearings can be integrated into the paint tray 26, for example.
  • the rotary printing device 10 includes a non-contact displacement sensor 90 for carrying out the control operation using the control device 80, which is designed and set up to detect the deviation A from the setpoint position P_S and which is coupled to the control device 80 in a signal-transmitting manner.
  • Position feedback from the printing unit assembly 20 can be provided via the displacement sensor 90, and the displacement sensor 90 can be used to detect whether the deviation A of the printing unit assembly 20 from its target position P_S occurs when the rotary printing device 10 is in operation.
  • a deviation amount of the deviation A can be precisely detected using the displacement sensor 90.
  • the amount of deviation can, for example, correspond to a value of 100 ⁇ m or less, for example 50 ⁇ m or 25 ⁇ m.
  • control device 80 can control the linear motor 60, so that the motor component 62 and, with this motor component 62, the printing unit structure 20 according to the relative movement R relative to the frame 16 and to the device component 14 and to the second motor component 64 in the direction of the target position P_S can be moved.
  • regulated operation of the rotary printing device 10 also includes a result of the movement by the regulating device 80, with the result already occurring in real time during the Movement, that is, the adjustment of the printing unit structure 20 by the control device 80 is taken into account and has a direct influence on a control quality that can be achieved by means of the control device 80.
  • the printing unit assembly 20 having the printing cylinder 30 is used to print the printing medium 12.
  • the movement device 50 is used to move the printing unit structure 20 relative to the device component 14 and against the transverse force F_Q acting on the printing cylinder 30 during operation of the rotary printing device 10 in the direction of the setpoint position P_S of the printing unit structure 20.
  • the printing unit assembly 20 is moved by the motor components 62, 64 of the linear motor 60 of the movement device 50 in the direction of the target position P_S, the first motor component 62 of the motor components 62, 64 being held on the printing unit assembly 20 and relative to the second motor component 64 of the motor components 62, 64 is moved and wherein the second motor component 64 is held stationary with respect to the first motor component 62.
  • the printing unit assembly 20 (here: printing unit carriage) can be pushed by an operator in the direction of the device component 14, the first motor component 62, which is fixed to the housing 21 by means of the fixing component 44 and which can also be referred to as an actuator, Can be introduced without contact into the second motor component 64, which can also be referred to as a stator.
  • the second motor component 64 can then be energized and, as a result, a magnetic force can be exerted on the first motor component 62 by the second motor component 64.
  • the magnetic force fixes the printing unit structure 20 in the present case on the frame 16.
  • a current positioning of the printing unit structure 20 can be measured via the displacement sensor 90 and transmitted to the control device 80.
  • control device 80 controls the linear motor 60 in such a way that it moves the printing unit structure 20 into a predetermined central position.
  • control mode register control mode
  • the printing unit assembly 20 is moved as required by the linear motor 60 as part of the relative movement R, with defined thrust or tensile forces for moving the printing unit assembly 20 using the linear motor 60 being able to be exerted at any time. If larger amounts of force of these thrust or tensile forces are required due to mechanical defects or contamination, an amount of current required to determine the linear motor 60 can first be continuously increased in order to meet the need for the larger amounts of force with the same control quality.
  • a warning can be output by means of the control device 80 and the necessary maintenance can be indicated. If there is no reaction to this warning within a predetermined reaction time, the rotary printing device 10 can be switched off automatically.
  • the use of the linear motor 60 in connection with the control device 80 never leads to a situation in which the printing unit structure 20 and thus the printing cylinder 30 are not defined by the linear motor 60 exerted thrust or tensile forces and works without electronic monitoring.
  • the control device 80 can be connected to any Time received feedback from the linear motor 60 about its current load status and whether the control quality is sufficient for the respective predetermined parameters.
  • the control device 80 can include a display, for example.
  • the displacement sensor 90 enables high-resolution displacement measurement and the linear motor 60 enables highly dynamic movement of the printing unit structure 20, it being possible to react to the transverse force F_Q almost in real time without losing control quality in the register control.
  • the printing unit assembly 20 can generally be moved in the direction of the target position P_S depending on a relative offset V between the printing unit assembly 20 and an additional printing unit assembly 70 of the rotary printing device 10 that is upstream or downstream of the printing unit assembly 20 when printing the printing medium 12. This can be done by controlling the linear motor 60 by the control device 80.
  • the additional printing unit structure 70 is only shown in FIG Fig. 3 and shown in a very abstract way.
  • the additional printing unit structure 70 can comprise an additional printing cylinder 72 and an additional impression roller 74.
  • the additional printing unit structure 70 can be constructed entirely analogously to the printing unit structure 20, i.e. also have additional printing unit structure components not shown here, such as an additional ink tray, an additional drive motor and an additional clutch, to name just a few examples.
  • the additional printing unit structure 70 can be moved by an additional linear motor, likewise not shown and controlled in a controlled manner by the regulating device 80.
  • the additional printing unit assembly 70 is connected upstream of the printing unit assembly 20, so that the printing of the printing medium 12 by the additional printing unit assembly 70 takes place prior to the printing of the printing medium 12 by the printing unit assembly 20.
  • the regulating device 80 can generally be set up to displace the printing unit structure 20 also as a function of the relative offset V in the direction of the setpoint position P_S.
  • the linear motor 60 activated and operated in a regulated manner by means of the regulating device 80 a particularly high level of control accuracy can be achieved.
  • this enables what is known as pilot control of the lateral movement of the printing unit structure 20, which takes place parallel to the cylinder center axis 31, in the direction of the setpoint position P_S.
  • the printing unit structure 20 or the printing cylinder 30 can be moved into the target position P_S by means of the linear motor 60 controlled by the control device 80, so that in a further printing unit structure connected downstream of the printing unit structure 20, a further relative offset can occur, but can have a smaller amount than the relative offset V.
  • a conceivable value for the relative offset V corresponds, for example, to an amount of 0.5 mm.
  • Such a “pre-control” of the printing unit structure 20 is made possible in particular due to the small bearing clearances and the particularly high regulating speed which can be achieved by the linear motor 60 controlled with the aid of the regulating device 80.
  • the deviation A can be regulated with a deviation amount of 50 ⁇ m or even 25 ⁇ m, i.e. the printing unit assembly 20 or the printing cylinder 30 can accordingly be moved into the target position P_S if the deviation A shows this Has deviation amount.
  • typical errors for which register deviations (in the direction of the cylinder center axis 31 and thus in the transverse direction of the printing medium 12) with a register deviation amount of 100 ⁇ m belong to be regulated by exact repositioning, that is to say by exact movement of the printing unit structure 20 and of the printing cylinder 30 in the direction of the target position P_S, when the rotary printing device 10 is in operation.
  • the rotary printing device 10 can generally be used for doctor blade intaglio printing.
  • the printing medium 12 can therefore be printed by doctor blade gravure using the rotary printing device 10.
  • different forces act on the rotary printing device 10, which is why the register is subject to constant fluctuations when printing the printing medium 12 in its transverse direction, i.e. parallel to the cylinder center axis 31, for example caused by the deviation A.
  • These fluctuations or the deviation A must be compensated for as early as possible.
  • the deviation A can be caused, for example, by an oscillating movement of a squeegee (not shown) assigned to the printing unit structure 20, the deviation A being different depending on which squeegee stroke of the squeegee and which printing speed is set.
  • a thin film of solvents and pigments can be present between the doctor blade and the printing cylinder 30 at those points of the printing cylinder 30 where no ink is to be applied, whereby this film can act like a sliding film. So that the squeegee does not permissibly drag over the printing cylinder 30, the squeegee is moved back and forth in an oscillating manner parallel to the cylinder center axis 31, whereby the transverse force F_Q (oscillating) can occur accordingly.
  • the transverse force F_Q can also occur, for example, as a result of a spontaneous adhesion of a further printing medium to the printing medium 12 (adhesion of a new material web to the previous material web).
  • deviation A or relative offset V occurs particularly frequently.
  • Deviation A or relative offset V caused by gluing can be corrected immediately by a so-called web edge controller when the rotary printing device 10 is fed into the machine, but it can by a combination of a larger than the thickness of the print medium 12, a glue point created during gluing between the further (new) print medium and the print medium 12 and the deviation A or the relative offset V and their respective correction to at least briefly raise the impression roller 32 and / or the additional pressurist 74 come.
  • the pressure medium 12 can be displaced relative to the pressure cylinder 30, as a result of which the pressure medium 12 can exert the transverse force F_Q with a considerable amount of force, for example on the pressure cylinder 30.
  • the occurrence of the transverse force F_Q can be counteracted by the rotary printing device 10, in particular by the linear motor 60 controlled by the regulating device 80, within a very short reaction time, the printing unit structure 20 or the printing cylinder 30 being able to be adjusted with high precision using the linear motor 60.
  • the control device 80 which is embodied here as a register control system, allows the corresponding register to be controlled autonomously for each cylinder revolution of the printing cylinder 30, the additional printing cylinder 72 and further printing cylinders of the rotary printing device 10. If fluctuations occur, such as temperature changes or changes in tension in the printing medium 12, there may also be register deviations, for example, in the longitudinal direction of the printing medium and thus perpendicular to the cylinder center axis 31 come. In the event of these register deviations on the printing cylinder 30, the control device 80 can transmit control signals to the drive motor 40 and thereby correct the register deviations by accelerating or decelerating a rotational speed of the printing cylinder 30 specified by the drive motor 40. In the case of the deviation A in the lateral direction, the movement of the printing unit structure 20 or the printing cylinder 30 can be corrected by controlling the linear motor 60 by means of the control device 80.
  • the movement of the at least one printing unit structure 20 in the direction of the setpoint position P_S can be carried out exclusively by exerting force by means of the linear motor 60 of the rotary printing device 10. Accordingly, the movement of the at least one printing unit structure 20 in the direction of the target position P_S can be carried out exclusively by exerting force by means of the linear motor 60 of the rotary printing device 10. In order to move the at least one printing unit structure 20, acceleration and deceleration (braking) of the at least one printing unit structure 20 can thus take place exclusively through the exertion of force by means of the linear motor 60.
  • the acceleration and deceleration of the at least one printing unit structure 20 in the direction of the setpoint position P_S is made possible in particular without the need for acceleration components and deceleration components other than the at least one linear motor 60.
  • the acceleration components that can be dispensed with include, for example, spindle drives or other electric motors.
  • One of the delay components that can be dispensed with is a service brake, for example.
  • the movement of the printing unit structure 20, any bearing corrections and a compensation of the occurring transverse force F_Q can take place exclusively by means of the linear motor 60.
  • the linear motor 60 can not only achieve a very high accuracy of up to 0.1 ⁇ m when moving the printing unit structure 20 but an extremely high reaction speed can also be achieved in order to react to errors that occur.
  • an annular gap can be formed between the first motor component 62 and the second motor component 64.
  • the annular gap can have a gap width of, for example, 1 mm. This enables a wear-free relative movement of the first motor component 62 relative to the second motor component 64.
  • the control device 80 can control the linear motor 60 with high accuracy based on the measurement data control generated control signals of the control device 80.
  • the linear motor 60 By controlling the linear motor 60 using the control signals of the control device 80 (here: register control system), the linear motor 60 can be operated in a highly dynamic manner and react to the transverse force F_Q that occurs.
  • the printing unit structure 20 can also be regulated and held at a distance of less than 10 ⁇ m from the target position P_S under the action of the transverse force F_Q using the linear motor 60 controlled by the control device 80 when the rotary printing device is operated.
  • the transverse force F_Q acting on the printing cylinder 30 or the printing unit assembly 20 can move the printing cylinder 30 or the printing unit assembly 20 out of its target position P_S for a short time, but the deviation A from the target position P_S that occurs can immediately be compensated for by the linear motor 60. Getting corrected.
  • the linear motor 60 controlled by the control device 80 can compensate for the deviation A even if it suddenly occurs, for example as a result of the printing medium 12 sticking, at high speed, for example 0.6 mm / s to 1 mm / s, and with almost no overshoot will.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (12)

  1. Dispositif d'impression rotatif (10), comportant :
    - au moins un montage de groupe d'impression (20), qui comporte au moins un cylindre d'impression (30) pour imprimer un support d'impression (12) ,
    et
    - au moins un moyen de déplacement (50), qui est conçu pour déplacer l'au moins un montage de groupe d'impression (20) par rapport à un composant de configuration (14) du dispositif d'impression rotatif (10), et contre au moins une force transversale (F_Q) agissant sur l'au moins un cylindre d'impression (30) lors du fonctionnement du dispositif d'impression rotatif (10), dans la direction d'une position de consigne (P_S) de l'au moins un montage de groupe d'impression (20),
    dans lequel l'au moins un moyen de déplacement (50) comporte au moins un moteur linéaire (60), qui comporte des composants du moteur (62, 64) pour déplacer l'au moins un montage de groupe d'impression (20) dans la direction de la position de consigne (P_S), dont un premier composant du moteur (62) des composants du moteur (62, 64) est couplé à l'au moins un montage de groupe d'impression (20), et est déplaçable linéairement par rapport à un second composant du moteur (64), caractérisé en ce que l'au moins un montage de groupe d'impression (20) est conçu en tant que chariot de groupe d'impression, et comporte des rouleaux respectifs (22, 24) et/ou des roues respectives pour supporter une force de poids (F_G) de l'au moins un montage de groupe d'impression (20) sur une bande de roulement (S_A).
  2. Dispositif d'impression rotatif (10) selon la revendication 1,
    caractérisé en ce que
    le dispositif d'impression rotatif (10) comporte au moins un dispositif de réglage (80), qui est conçu pour commander le moteur linéaire (60) dans le cas d'un écart (A) de l'au moins un montage de groupe d'impression (20) de la position de consigne (P_S), pour ainsi entraîner un mouvement relatif entre les composants du moteur (62, 64), et déplacer en l'occurence l'au moins un montage de groupe d'impression (20) dans la direction de la position de consigne (P_S).
  3. Dispositif d'impression rotatif (10) selon la revendication 2,
    caractérisé en ce que
    le dispositif d'impression rotatif (10) comporte au moins un capteur de déplacement (90), qui est conçu pour détecter l'écart de la position de consigne (P_S), et qui est couplé au dispositif de réglage (80) en transmettant par des signaux.
  4. Dispositif d'impression rotatif (10) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le premier composant du moteur (62) et le second composant du moteur (64) sont agencés sans contact entre eux pour déplacer le montage de groupe d'impression (20) dans la direction de la position de consigne (P_S).
  5. Dispositif d'impression rotatif (10) selon la revendication 1,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20), conçu en tant que chariot de groupe d'impression, est sans des freins de service agissant sur ses rouleaux respectifs (22, 24) et/ou ses roues respectives pour retarder le montage de groupe d'impression (20).
  6. Dispositif d'impression rotatif (10) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20) comporte au moins un moteur d'entraînement (40) pour entraîner l'au moins un cylindre d'impression (30).
  7. Dispositif d'impression rotatif (10) selon la revendication 6,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20) comporte au moins un embrayage (42), par lequel l'au moins un moteur d'entraînement (40) peut être embrayé avec l'au moins un cylindre d'impression (30) en permettant la transmission de couple.
  8. Dispositif d'impression rotatif (10) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20) comporte au moins un rouleau presseur (32), au moyen duquel le support d'impression (12), lors de son impression, peut être pressé à l'au moins un cylindre d'impression (30) par l'intermédiaire de l'au moins un cylindre d'impression (30).
  9. Dispositif d'impression rotatif (10) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20) comporte au moins un bac à encre (26) pour fournir de l'encre pour l'au moins un cylindre d'impression (30).
  10. Montage de groupe d'impression (20) pour un dispositif d'impression rotatif (10) selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    le montage de groupe d'impression (20) comporte un composant de fixation (44) pour fixer un des composants du moteur (62, 64) du moteur linéaire (60) de l'au moins un moyen de déplacement (50).
  11. Procédé de fonctionnement d'un dispositif d'impression rotatif (10), dans lequel au moins un montage de groupe d'impression (20) du dispositif d'impression rotatif (10), comportant un cylindre d'impression (30), est utilisé pour imprimer un support d'impression (12), et dans lequel au moins un moyen de déplacement (50) du dispositif d'impression rotatif (10) est utilisé pour déplacer l'au moins un montage de groupe d'impression (20) par rapport à un composant de configuration (14) du dispositif d'impression rotatif (10), et contre au moins une force transversale (F_Q), agissant sur l'au moins un cylindre d'impression (30) lors du fonctionnement du dispositif d'impression rotatif (10), dans la direction d'une position de consigne (P_S) de l'au moins un montage de groupe d'impression (20), dans lequel l'au moins un montage de groupe d'impression (20) est déplacé par des composants du moteur (62, 64) de l'au moins un moteur linéaire (60) de l'au moins un moyen de déplacement (50) dans la direction de la position de consigne (P_S), dans lequel un premier composant du moteur (62) des composants du moteur (62, 64) est couplé à l'au moins un montage de groupe d'impression (20), et est déplacé linéairement par rapport à un second composant du moteur (64) des composants du moteur (62, 64), caractérisé en ce que l'au moins un montage de groupe d'impression (20) est conçu en tant que chariot de groupe d'impression, et comporte des rouleaux respectifs (22, 24) et/ou des roues respectives pour supporter une force de poids (F_G) de l'au moins un montage de groupe d'impression (20) sur une bande de roulement (S_A).
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    l'au moins un montage de groupe d'impression (20) est déplacé dans la direction de la position de consigne (P_S), en fonction d'un décalage relatif (V) entre l'au moins un montage de groupe d'impression (20) et de l'au moins un montage de groupe d'impression supplémentaire (70) du dispositif d'impression rotatif (10), dont le montage de groupe d'impression supplémentaire (70) est monté en amont ou en aval de l'au moins un montage de groupe d'impression (20) lors de l'impression du support d'impression (12).
EP19214197.6A 2018-12-14 2019-12-06 Dispositif d'impression rotatif, montage de groupe d'impression pour un dispositif d'impression rotatif et procédé de fonctionnement d'un dispositif d'impression rotatif Active EP3686012B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19214197T PL3686012T3 (pl) 2018-12-14 2019-12-06 Urządzenie do druku rotacyjnego, jednostka drukująca do urządzenia do druku rotacyjnego i sposób eksploatacji urządzenia do druku rotacyjnego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018132299.2A DE102018132299A1 (de) 2018-12-14 2018-12-14 Rotationsdruckeinrichtung, Druckwerkaufbau für eine Rotationsdruckeinrichtung und Verfahren zum Betreiben einer Rotationsdruckeinrichtung

Publications (2)

Publication Number Publication Date
EP3686012A1 EP3686012A1 (fr) 2020-07-29
EP3686012B1 true EP3686012B1 (fr) 2021-09-29

Family

ID=68834977

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Application Number Title Priority Date Filing Date
EP19214197.6A Active EP3686012B1 (fr) 2018-12-14 2019-12-06 Dispositif d'impression rotatif, montage de groupe d'impression pour un dispositif d'impression rotatif et procédé de fonctionnement d'un dispositif d'impression rotatif

Country Status (4)

Country Link
EP (1) EP3686012B1 (fr)
DE (1) DE102018132299A1 (fr)
HU (1) HUE057238T2 (fr)
PL (1) PL3686012T3 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709634A (en) 1986-10-02 1987-12-01 Rockwell International Corporation Plate cylinder register control
DE4138479C3 (de) * 1991-11-22 1998-01-08 Baumueller Nuernberg Gmbh Verfahren und Anordnung für einen Elektromotor zum Antrieb eines Drehkörpers, insbesondere des druckgebenden Zylinders einer Druckmaschine
DE29522290U1 (de) * 1994-08-30 2001-03-29 Roland Man Druckmasch Offsetdruckmaschine
WO2004082939A1 (fr) * 2003-03-20 2004-09-30 Comexi, S.A. Procede d'enregistrement de differentes couleurs en flexographie et imprimante flexographique a dispositif permettant la mise en oeuvre dudit procede
DE10352619B4 (de) 2003-07-11 2012-09-27 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung zur Beeinflussung des Fan-Out-Effektes
DE102006043716A1 (de) * 2006-09-18 2008-03-27 Robert Bosch Gmbh Axial verschiebbarer Direktantrieb

Also Published As

Publication number Publication date
EP3686012A1 (fr) 2020-07-29
PL3686012T3 (pl) 2022-01-31
DE102018132299A1 (de) 2020-06-18
HUE057238T2 (hu) 2022-04-28

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