EP2868477A1 - Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse - Google Patents

Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse Download PDF

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Publication number
EP2868477A1
EP2868477A1 EP20140000308 EP14000308A EP2868477A1 EP 2868477 A1 EP2868477 A1 EP 2868477A1 EP 20140000308 EP20140000308 EP 20140000308 EP 14000308 A EP14000308 A EP 14000308A EP 2868477 A1 EP2868477 A1 EP 2868477A1
Authority
EP
European Patent Office
Prior art keywords
printing
cleaning
rotary table
workpiece
hollow body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140000308
Other languages
German (de)
English (en)
Other versions
EP2868477B1 (fr
Inventor
Stefan Drexler
Steffen Osswald
Thomas Pflüger
Joachim Schulz
Joachim Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hinterkopf GmbH
Original Assignee
Hinterkopf GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hinterkopf GmbH filed Critical Hinterkopf GmbH
Priority to EP14000308.8A priority Critical patent/EP2868477B1/fr
Priority to PL14000308T priority patent/PL2868477T3/pl
Publication of EP2868477A1 publication Critical patent/EP2868477A1/fr
Application granted granted Critical
Publication of EP2868477B1 publication Critical patent/EP2868477B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Definitions

  • the invention relates to a printing press for printing on at least one side open hollow bodies, with a machine frame, on which a workpiece rotary table is rotatably mounted, with a workpiece rotary table associated drive unit for a rotational positioning of the workpiece rotary table about a rotation axis, with workpiece holders, which are to receive printing Hollow bodies are formed and each rotatably mounted on the workpiece rotary table, with drive means for rotational movement of the workpiece holders and at least one machine frame associated printing device for printing a peripheral surface of a recorded on the workpiece holder hollow body, wherein the printing device comprises at least one print head with a series arrangement of Farbdosierianan , which are designed for the contactless delivery of ink to a surface of the hollow body to be printed, wherein the drive unit as a brush this electric motor is formed and a stator fixed to the machine frame and a rotatable relative to the stator formed, coupled to the workpiece rotary table rotor, wherein the drive unit is associated with a control unit
  • a processing device and a method for operating a processing device are known, wherein the processing device has a plurality of working devices, which are arranged along a conveying path for the container blanks to be processed and wherein at least one of the working devices can be designed as a printing device to make an impression of an outer surface of the container blanks ,
  • the object of the invention is to provide a printing machine and a method for operating a printing press, with which an improved print quality can be ensured.
  • the Farbdosieriana are arranged on a discharge surface of the print head and are designed for dispensing color particles in a dispensing direction and that the printing device comprises a cleaning station, which is designed for cleaning the dispensing surface and opposite to perform the cleaning in the dispensing direction is arranged to the delivery surface.
  • the print head is arranged within the printing device such that the discharge surface is opposite to the peripheral surface of the hollow body to be printed.
  • the ink dosing elements which are designed in particular as ink nozzles, are aligned with the peripheral surface in such a way that a discharge of ink from the ink dosing elements ensures a preferential impact in the radial direction on the usually cylindrical circumferential surface of the hollow body.
  • the Farbdosierium are formed such that the discharge directions of the individual Farbdosieretti a printhead in a common, especially aligned transversely to the discharge surface, discharge plane lie.
  • this discharge plane also includes an axis of rotation of the workpiece holders and thus ensures at least an almost exactly vertical impact of the color particles on the peripheral surface of the hollow body to be printed.
  • the colorant particles emitted by the paint dosing elements in the dispensing direction are small droplets of ink, the ink preferably being designed to cure with ultraviolet light.
  • deposits of ink residues may form on the delivery surface of the printhead which may have undesirable effects on the discharge direction and / or the dispensed size of the colorant particles and possibly lead to clogging of the respective ink metering element.
  • a cleaning station is provided.
  • This cleaning station can be arranged during a cleaning operation opposite to the delivery surface and is preferably arranged during a rest phase away from the delivery surface.
  • control unit for a control of the drive unit for performing rotational step movements of the workpiece rotary table about the axis of rotation in a freely selectable sequence of at least two different Angular step sizes is formed.
  • further working means are provided on the machine frame of the printing press in addition to the printing device, which are preferably arranged in a constant angular pitch to the axis of rotation.
  • the control unit is designed at least for carrying out a further rotary step movement, which comprises an angular increment which deviates from the first angular increment.
  • the drive unit is associated with a sensor device connected to the control device for determining a rotational position of the rotor and that the control unit is designed for a freely selectable setting of a rotational position of the workpiece rotary table relative to the printing device is.
  • the sensor means which is, for example, an incremental rotary encoder, preferably an encoder
  • the control device can at any time an exact determination of the angular position of the rotor and the associated workpiece rotary table relative to the stator, which in turn is set on the machine , carry out.
  • the control device can release electrical power to the rotor in order to achieve the desired rotational position of the workpiece rotary table relative to the printing device.
  • This default can be done either in the form of a controlled or controlled control of the drive unit, so that the workpiece rotary table can be positioned exactly opposite the printing device.
  • a printing operation can then be carried out with high-precision alignment of the hollow body with respect to the printing device and preferably stationary workpiece rotary table.
  • control device is adapted to bring the drive unit when reaching the predetermined rotational position of the workpiece rotary table relative to the printing device in a braked state, so that no further relative movement between the workpiece rotary table and printing device takes place, could possibly cause an undesirable distortion of the applied print image.
  • a corresponding algorithm is stored in the control unit, which is provided for the coordination of the activities of the drive unit and the printing device and maintains the braking state for the drive means until the printing operation is completed.
  • the cleaning station comprises at least one fluid nozzle for a, in particular contactless, provision of a cleaning fluid to the delivery surface.
  • the print head comprises several hundred or even several thousand, in particular straight lined, Farbdosieriana, which are arranged in particular in a uniform pitch and have a diameter of a few hundredths of a millimeter.
  • the cleaning fluid is preferably a cleaning fluid which, in particular without contact, is provided with a fluid nozzle to the delivery surface and leads there to eliminate the undesired accumulations of color particle residues.
  • the cleaning station comprises at least one suction means for a suction of the cleaning fluid used for cleaning the discharge surface.
  • the suction means can be ensured that even with a supply of a large volume of fluid flow to the discharge surface rapid and low-pollution cleaning of the print head can be performed.
  • the cleaning station is associated with a storage tank for the cleaning fluid and a storage tank for spent cleaning fluid.
  • each of the storage tanks is connected via a fluid line and an intermediate feed pump with the fluid nozzle or a suction mouth in the cleaning station.
  • the cleaning station comprises a sealing means for a, in particular edge-side, sealing engagement with the delivery surface.
  • the cleaning station together with the print head can determine a cleaning volume that is essentially determined by the delivery surface and the sealant.
  • this cleaning volume the desired supply and removal of cleaning fluid is made to the discharge surface or from the delivery surface, without contaminating an environment of the print head with cleaning fluid and / or detached ink or paint residues.
  • the delivery surface of the print head is rectangular, accordingly, the sealant is also at least substantially rectangular and is sealingly against the delivery surface.
  • an edge-sealing contact of the sealant is provided on the delivery surface in order to accept the lowest possible requirements for positioning of the cleaning station relative to the print head.
  • the sealing means may include a circumferential, arranged in a plane sealing edge, which is designed for the sealing contact with the delivery surface is particularly advantageous.
  • the cleaning station is arranged with at least one guide means movable on the printing device and that at least one coupled to the control unit actuating means for moving the cleaning station between a rest position away from the printhead and an applied to the print head function position is formed. It is particularly advantageous if the actuating means in a double function as well
  • Guiding means is formed, as may be the case, for example, when using a hydraulic cylinder or pneumatic cylinder or an electric actuator.
  • the guide means serve to ensure a precise alignment of the cleaning station for the system on the printing device, in particular on the print head.
  • the actuating means is provided to perform the desired movement of the cleaning station between a rest position away from the printhead, in which the printhead can be used for printing the hollow body, and a voltage applied to the print head operating position.
  • more than one adjusting means can be used to perform the desired movement of the cleaning station between rest position and functional positions.
  • the control device comprises at least one frequency converter, which is designed to provide electrical drive energy to the rotor and which is fixed to the rotor.
  • a circulating magnetic field can be imparted to the rotor in order to produce a rotational movement with respect to the stator.
  • the rotor comprises a coil arrangement which, when electric drive energy is provided, generates the required circulating magnetic field and thus can interact magnetically with the stator, which in turn is preferably provided with a permanent magnet arrangement or a further coil arrangement.
  • the rotor With at least one electrical coil arrangement, it is advantageous if a number of electrical connections which have to be provided by the stationary machine frame to the rotatable rotor are kept small in order to minimize a number of electrical rotary joints. Accordingly, it is advantageous if the electrical drive energy for a plurality of coil arrangements of the rotor can be provided by respectively assigned frequency converters which are fixed to the rotor. In this case, the transmission of a supply voltage and a drive signal from the machine frame to the rotor is sufficient since the distribution of the electrical drive energy takes place only at the rotor by the frequency converter accommodated there.
  • the printing device comprises a plurality of print heads, wherein at least one of the print heads is movably arranged along an extension axis of the Farbdosierimplantation on a print head carrier and that the movably mounted print head is associated with an electrically controllable adjusting means for adjusting a relative position relative to the at least one further print head ,
  • the at least two print heads are provided for the printing of the same hollow body.
  • These printheads can be positioned relative to one another by means of the electrically controllable adjusting device in such a way that arranged from the adjacent printhead ink particles arranged on the peripheral surface of the hollow body to be printed in such a favorable manner that a printed image on the hollow body has a resolution higher than the resolution of each printhead is.
  • the cleaning station is designed to individually the at least two print heads of the printing device to clean, which can be reliably prevented even in a relatively movable arrangement of the print heads to each other a penetration of the cleaning fluid in areas away from the delivery surface. It is advantageous if the cleaning device can be moved relative to the printheads so that they each come in sealing engagement with the printhead to be cleaned.
  • the print heads are aligned parallel to each other and arranged directly adjacent to the extension axis of the Farbdosieriata, in particular slidably adjacent to each other.
  • the printing press comprises a workpiece rotary table mounted rotatably on a machine frame, a drive unit designed as a brushless electric motor for introducing rotary step movements onto the workpiece rotary table, a control unit for providing electrical energy to the drive unit, a plurality of workpiece holders arranged rotatably mounted on the workpiece rotary table for recording, end open hollow bodies and several circular Workstations arranged on a circumference of the workpiece rotary table, wherein at least one of the workstations is designed as a printing device.
  • the method according to the invention comprises the steps of: moving the workpiece rotary table in successive rotary incremental movements with a first angular pitch about an axis of rotation in order to arrange hollow bodies to be printed on the workpiece holders opposite the workstations, printing on a respective hollow body respectively associated with the pressure device, temporarily moving the workpiece rotary table a second angular pitch about the axis of rotation, to ensure an arrangement of the hollow body away from the workstations in a maintenance position and performing a maintenance and / or cleaning operation on the workstations, completion of the rotary step movement for moving the hollow body to the next workstation after completion of the maintenance and / or cleaning process.
  • the steps for the workpiece rotary table with which the workpiece holders are arranged on the workpiece rotary table in each case opposite to the workstations.
  • at least one hollow body passes into a working area of the printing device and can be printed during the rest phase of the rotary step movement, for which purpose preferably a rotation of the workpiece holder is provided about an axis of rotation of the workpiece rotary table aligned rotation axis.
  • an intermediate position is driven in the inventive method from the workpiece rotary table, which is based on the working position by movement of the workpiece rotary table with a second angular pitch results.
  • the respective workpiece holders are away from the workstations, so that an advantageous accessibility of the workstations is ensured and they can be maintained, for example, or cleaning operations can be performed.
  • it is provided to carry out a cleaning process on the printing device with the aid of a cleaning station, in order then to resume the regular machining operation for the printing press by completing the rotary step movement until reaching the first angular graduation.
  • this is provided in the inventive method to carry out a cleaning of the printing device with the cleaning station in the maintenance position, which is arranged with at least one guide means movable on the printing device and by a coupled to the control unit actuating means from a rest position away from the printing device in a the printing device adjacent functional position can be moved.
  • a sealing system of the cleaning station is occupied at least one print head of the printing device and that a, preferably contactless, supply of a cleaning fluid to a discharge surface of the print head and a discharge of the cleaning fluid from the delivery surface means the cleaning station is made.
  • a determination of a print image quality is performed on the printed hollow body with a sensor device and that a carrying out of the cleaning function of the determined print image quality is made.
  • a sensor device is provided, with the aid of which the entire print image or sections of the printed image on the hollow body can be detected and evaluated in order to draw conclusions about the contamination of the print heads.
  • at least one hollow body is printed with a special test pattern and a detection of the print image quality is carried out on the printed test hollow body.
  • One in the FIG. 1 illustrated printing machine 1 comprises a rotatable about a perpendicular to the plane of the FIG. 1 Aligned rotation axis 2 mounted workpiece rotary table 3 and a plurality of pairs of examples mounted on the workpiece rotary table workpiece holders 4.
  • the workpiece holders 4 are not shown with drive means to exemplary parallel to the plane of the FIG. 1 aligned rotational axes 5 individually rotatably mounted and provided for receiving sleeve-shaped, in particular designed as aerosol can blanks or tube blanks, at least substantially cylindrical hollow bodies 6.
  • the workpiece holders 4 are designed as mandrels on which the hollow body 6 designed as a hollow body, in particular as a hollow cylinder open at least on one side, can be plugged.
  • the workpiece holders 4 In one of the workpiece holders 4 during a rotational movement of the workpiece rotary table 3 about the axis of rotation 2 swept annular region 7, the extends in the radial direction about the workpiece rotary table 3, a plurality of work stations 8 to 18 are arranged, which are designed for processing and / or testing of the transported hollow body 6. Since it is in the view according to the FIG. 1 is a plan view and the workstations 9 to 17 are arranged by way of example in the vertical direction above the workpiece holders 4, the workstations are shown 9 to 17 only in dashed lines.
  • the work station 8 is a loading station, on which the cylindrical hollow body 6 are exemplarily in pairs on the workpiece holders 4 by a suitable transport device 19, which is coupled to a conveyor system, not shown, for the cylindrical hollow body 6, pushed.
  • a rotary position of the cylindrical hollow body 6 is determined at the workstation 9 by a first optical scanning of the cylindrical hollow body 6, for example to ensure correct rotational alignment of the cylindrical hollow body 6 for a printing operation taking place at the workstation 10.
  • This is particularly important if the surface to be printed on the hollow body 6 is provided with features that are to be in a predetermined manner with the applied print image in a predetermined manner. These features may be, for example, local embossing and / or embossing in and / or out of the surface of the article 6 and / or pre-printed areas, which in turn are to serve as a primer for the subsequent printing.
  • It can preferably be provided to print on a partially reshaped or already completely reshaped article 6, which in particular embosses and / or embossments, so that an alignment of the printed image with respect to the deformed Regions takes place and not, as it was previously known from practice, a deformation of the hollow body 6 based on a pre-applied printed image is made.
  • it is provided to print a reshaped aerosol can blank with indentations and / or characteristics locally or over its entire peripheral surface, wherein the aerosol can blank after printing in the printed areas with a protective coating, in particular a transparent varnish, can be coated and then ready for a filling ,
  • the workstation 10 includes an example in the FIGS. 4 to 7 closer to printing device 20, on which the cylindrical hollow body 6 during rotation about respective axes of rotation 5 using printheads 21, 22, as shown in the FIGS. 4 to 7 are shown in more detail and described below, are printed in a predetermined range. Furthermore, the workstation 10 comprises a cleaning station 23, which is designed to clean the print heads 21, 22 and whose operation is also described in more detail below.
  • the work station 14 is embodied as an inspection device by way of example and makes it possible to determine a print quality of the print image applied by the printing device 21 to the peripheral surface of the object 6.
  • the other workstations 11 to 13 and 15 to 17 are used for further processing of the cylindrical hollow body 6, for example, for applying a protective coating on the printing or for mounting components to the hollow body. 6
  • At the workstation 18 takes place an unloading process in which the cylindrical hollow body 6 by means of a transport device 24 are deducted from the mandrel-like workpiece holders 4 and fed to a not shown further transport system.
  • the workpiece rotary table 4 is exemplarily designed as an asynchronous machine in the form of an external rotor and comprises according to the illustration of FIG. 4 a radially arranged inside, also at least to be regarded as a component of a machine frame stator 25 to which a plurality of schematically illustrated, circularly arranged magnetic means 26, 27 are mounted.
  • the magnet means 26, 27 are designed to provide magnetic fields oriented in the radial direction in each case and can be designed, for example, as current-carrying coils or permanent magnets.
  • the stator 25 is circularly surrounded by a rotor 28 which is rotatably mounted on the stator 25 by means of a bearing device, not shown, and which forms an air gap 29 with the stator 25.
  • coils 30 are arranged on the rotor 28, which can provide a predominantly oriented in the radial direction magnetic field when current is applied.
  • the coils 30 are each arranged in segment-like space sections with nikringabismesförmigem cross-section and electrically connected to frequency converters 31.
  • the frequency converter 31 are used for the coordinated provision of the coil currents to the respective connected coils 30.
  • each of the frequency converter 31 is connected to two coils.
  • the frequency converter 31 are electrically connected to a control device 32, which in turn via a rotary connection, not shown, electrically connected to a supply voltage terminal and to a higher-level machine control, not shown, in particular a programmable logic controller (PLC) is.
  • PLC programmable logic controller
  • the programmable logic controller is used to coordinate all work processes for the printing press 1 and in particular provides movement commands for the drive unit 33 formed by the stator 25, rotor 28, frequency converters 31 and control device 32.
  • control unit 32 is also designed to control the workstations 8 to 18, in particular also for the control of the pressure device 20 and the cleaning station 23.
  • each coil is associated with an individual frequency converter.
  • a plurality of coils are connected to a frequency converter.
  • the control device 32 is assigned a rotational position sensor 34, whose sensor signal is processed in the control device 32 and evaluated.
  • the position of the rotor 28 relative to the stator 25 can be determined in order to make an adapted energization of the coils 30 as a function of a movement command to be executed, which is made available in particular by the programmable logic controller.
  • rotor 28 For stepwise processing of the hollow body 6 to the respective workstations 8 to 18 formed in the form of the workpiece rotary table 3 rotor 28 performs a rotary step movement by a first angular increment with the angle W, in which the paired workpiece holders 4 from one of the respective workstation 8 to 18 opposite position to be transported to one of the respective subsequent workstation 8 to 18 opposite position.
  • the rotational step movement is hereby carried out as a sequence of an acceleration from standstill, a deceleration from the achieved target speed and a subsequent standstill time, wherein at least the deceleration is performed in a controlled operation of the drive unit 33.
  • the drive unit 33 is designed such that the acceleration and deceleration of the workpiece rotary table 3 are freely adjustable over a wide range and the downtime and can be adapted to the requirements of processing the respective cylindrical hollow body 6 at the workstations 8 to 18.
  • provision can be made for a regulation of the rotational position for the rotor 28 relative to the stator 25 during the machining, in particular during the printing, of the hollow body 6 in a manner in which a movement of the rotor 28 is minimized, in particular zero, by one Distortion of the printed image to avoid.
  • the drive unit 33 for the workpiece rotary table 3 can be controlled in such a way that the workpiece holders 4 execute an intermediate step with a second angular increment, for example at an angle W / 2, ie half the angle W.
  • the workpiece holders 4 are not arranged opposite to the workstations 8 to 18, but rather are arranged apart or between the workstations 8 to 18, as shown in the FIG. 2 is shown schematically.
  • the intermediate step of the workpiece rotary table 3 can thus be used in particular for cleaning or other maintenance of workstations 8 to 18, for example for carrying out a cleaning of the printing device 20 with the cleaning station 23.
  • the in the FIGS. 4 to 7 schematically illustrated printing device 20 is designed for printing a peripheral surface of an article 6.
  • the printing device 20 according to the illustration of FIG. 5 two mutually parallel, linearly movable print heads 21, 22, which are mounted on a serving as a print head carrier body 35 of the printing device 20 in a common guide recess 36.
  • Each of the two print heads 21, 22 can be displaced individually along the guide recess 36 by means of an associated actuating means 37, 38.
  • each adjusting means 37, 38 each comprise a spindle motor 39, 40 and a rotatably mounted in the base body 35, with the respective spindle motor 39, 40 rotatably connected drive spindle 41, 42.
  • the adjusting means 37, 38 are not shown in detail with the control device 32nd electrically connected and can be controlled to perform the printing operation of the controller 32.
  • the strip-like trained trained print heads 21, 22 have each exemplarily a row of nozzles 43, 44, which is designed as a series of nozzles along a straight line, the nozzles can also be referred to as Farbdosierimplantation.
  • the rows of nozzles 43, 44 are respectively disposed on discharge surfaces 45, 46 of the print heads 21, 22 and formed to dispense color particles in a dispensing direction 47.
  • the dispensing direction is aligned transversely to the discharge surface 45, 46, which is embodied as an example.
  • the nozzles are each associated with individually controllable piezo drives, which are used for a discharge of ink droplets through the nozzles and are electrically connected in a manner not shown electrically connected to the controller 32 so that a stored in the controller 32 print image by selective control of the respective piezoelectric drives and a color discharge caused thereby by the respective nozzles on the, preferably rotating, object 6 can be transmitted.
  • a printing device 20 is provided, in which the two printing heads 21, 22 are designed, for example, to emit a single color.
  • a plurality of printing devices may be provided, with which a multi-color print on the object 6 can take place.
  • an arrangement of the nozzles is provided in a predetermined and constant pitch, so that each adjacent nozzles arranged along the respective nozzle row 43, 44 always have the same distance from each other.
  • the pitch for the nozzles sets a resolution along the respective nozzle row 43, 44 for a print image that can be created by the print heads 21, 22.
  • the print heads 21, 22 arranged adjacent to one another can be arranged offset relative to one another by using the respective adjusting means 37, 38 such that ink droplets emitted by the second print head 22 in each case between the print heads first print head 21 ink droplets impinge on the object 6, whereby an increase, in particular a doubling, the resolution of the printed image in the direction of the extension of the nozzle rows 43, 44 can be achieved.
  • each nozzle of each print head 21, 22 can be driven by the controller 32 at a predetermined frequency, and can discharge ink droplets onto the peripheral surface of the article 6 at the predetermined frequency.
  • the frequency determines the resolution for the printed image in the circumferential direction. At a low rotational speed results in a high resolution in the circumferential direction, at high rotational speed results in a low resolution in the circumferential direction.
  • a functional module 48 is arranged opposite the respective printing device 20.
  • the functional module 48 includes a cleaning station 23 and a drying station 50.
  • the functional module 48 is set by way of example to an actuator arrangement 51 which comprises a horizontal actuator 52 and a vertical actuator 53, which allows movement of the functional module 48 in two mutually perpendicular spatial directions.
  • the horizontal actuator 52 and the vertical actuator 53 also serve as guides for the functional assembly 48, see FIG that this can be positioned exactly opposite the printing device 20.
  • the drying station 50 is exemplarily designed as a source for emitting ultraviolet radiation and is designed for curing the ink droplets dispensed onto the object 6, wherein a radiation direction for the ultraviolet radiation is preferably selected to be parallel to the dispensing direction 47 for the ink droplets.
  • the cleaning station 23 comprises a dimensionally stable carrier part 54 which serves for mechanical coupling to the drying station 50.
  • a sealant 55 is attached by way of example cohesively, which is made of an elastic, in particular rubber-elastic material.
  • the sealing means 55 has a cuboid shell geometry and comprises a recess 56, which is bounded by a circumferential sealing lip 57.
  • the sealing lip 57 has a in the representation of FIGS. 6 and 7 dashed shown trapezoidal cross section, which tapers with increasing distance from the support member 54.
  • the bores 58 are designed as nozzles with a circular cross-section.
  • the holes 59 are formed as recesses of rectangular cross-section.
  • the bores 58 communicate with a supply channel, not shown, in the carrier part 54 in a communicating connection, so that a cleaning fluid that is introduced into the channel can exit through the bores 58.
  • the inlet channel opens out on a side surface of the carrier part 54 and is connected via a hose connection 62 to a pump 60.
  • the pump 60 is in turn connected via a hose connection 63 to a storage tank 66, is stored in the cleaning fluid.
  • the pump 60 may be activated and deactivated by the controller 32 to force the cleaning fluid through the bores 58.
  • the holes 59 are connected to a non-illustrated flow channel in the support member 54 in communicating connection.
  • the drainage channel terminates at a side surface of the support member 54 and is connected via a hose connection 64 to a pump 61.
  • the pump 61 is in turn connected via a hose connection 65 to a storage tank 67 in which contaminated cleaning fluid can be stored.
  • the pump 60 may be activated and deactivated by the control device 32 to draw cleaning fluid through the holes 59.
  • the cleaning station 23 can, with the aid of the actuator assembly 50 from a in FIG. 6 illustrated rest position in a in FIG. 7 shown functional position are brought if the workpiece rotary table 3 is located in the maintenance position, in which the workpiece holders 4 are arranged away from the work stations 8 to 18.
  • the two print heads 21, 22 are positioned exactly next to one another by suitable control of the adjusting means 37, 38.
  • the sealing means 55 of the cleaning station 23 is placed in sealing engagement with the two delivery surfaces 45, 46 of the print heads 21, 22.
  • the two pumps 60, 61 are activated, so that cleaning fluid from the first storage tank 66 is conveyed through the bores 58 acting as nozzles on the delivery surfaces 45, 46 and there can wash existing ink residues.
  • the contaminated cleaning fluid can be sucked through the holes 59 and into the storage tank 67 promoted.
  • an alternate operation of the two pumps 60, 61 may be provided.
  • the workpiece rotary table 3 is controlled such that the respective workpiece holders 4 in the in FIG. 2 shown intermediate position between two workstations 9 to 17 are arranged so that no disturbing hollow body between the printing station 20 and the cleaning station 23 are arranged.
  • the cleaning station 23 is removed from the printing station 20 by means of the actuator arrangement 50. Subsequently, the workpiece rotary table 3 is controlled such that the respective workpiece holders 4 in the in FIG. 1 opposite position to the workstations reach 9 to 17. In this case, the drying station 50 arrives in a position opposite to the printing device 20, so that print heads 21, 22 can be activated, cured or dried on the object 6 discharged color.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
EP14000308.8A 2013-10-09 2014-01-28 Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse Active EP2868477B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14000308.8A EP2868477B1 (fr) 2013-10-09 2014-01-28 Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse
PL14000308T PL2868477T3 (pl) 2013-10-09 2014-01-28 Maszyna drukarska do zadrukowywania korpusów wydrążonych, otwartych przynajmniej z jednej strony i sposób eksploatacji maszyny drukarskiej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13004852.3A EP2860036B1 (fr) 2013-10-09 2013-10-09 Dispositif d'impression, imprimante et procédé de fonctionnement d'un dispositif d'impression
EP14000308.8A EP2868477B1 (fr) 2013-10-09 2014-01-28 Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse

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EP2868477A1 true EP2868477A1 (fr) 2015-05-06
EP2868477B1 EP2868477B1 (fr) 2017-12-20

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EP13004852.3A Active EP2860036B1 (fr) 2013-10-09 2013-10-09 Dispositif d'impression, imprimante et procédé de fonctionnement d'un dispositif d'impression
EP14000308.8A Active EP2868477B1 (fr) 2013-10-09 2014-01-28 Presse pour l'impression de corps creux ouverts au moins sur un côté et procédé de fonctionnement d'une presse

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EP (2) EP2860036B1 (fr)
ES (2) ES2768283T3 (fr)
PL (2) PL2860036T3 (fr)

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PL3088189T3 (pl) 2015-04-30 2021-05-31 Hinterkopf Gmbh Urządzenie drukujące i sposób zadrukowywania obiektu drukowanego
DE102015215227A1 (de) * 2015-08-10 2017-02-16 Krones Ag Behälterbehandlungsmaschine und Verfahren zur Bedruckung von Behältern
DE102015215224A1 (de) * 2015-08-10 2017-02-16 Krones Ag Behälterbehandlungsmaschine und Verfahren zur Bedruckung von Behältern
JP2018532614A (ja) * 2015-08-31 2018-11-08 ザ プロクター アンド ギャンブル カンパニー 物品上に物質を堆積させるための平行動作の方法
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DE202015007209U1 (de) 2015-10-16 2015-11-11 Hinterkopf Gmbh Druckmaschine zur Bedruckung von hülsenförmigen Werkstücken
DE102016107087A1 (de) * 2016-04-18 2017-10-19 Till Gmbh Verfahren und Vorrichtung zum digitalen Bedrucken von 3-dimensionalen Objekten
IT201600098327A1 (it) * 2016-09-30 2018-03-30 Omso Officina Macchine Per Stampa Su Oggetti Spa Macchina per la stampa a getto d'inchiostro di oggetti tridimensionali, in particolare di oggetti tubolari
ES2737953T3 (es) 2017-01-17 2020-01-17 Hinterkopf Gmbh Pieza en bruto de lata y procedimiento de mecanizado para un cuerpo hueco
DE102017215433A1 (de) * 2017-09-04 2019-04-04 Krones Ag Direktdruckmaschine zum Aufbringen einer Druckschicht auf Behälter
ES2823252T3 (es) 2017-10-17 2021-05-06 Hinterkopf Gmbh Impresora digital de mesa circular y mecanismo de impresión
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CN111806097A (zh) * 2020-07-21 2020-10-23 北京美科艺数码科技发展有限公司 一种喷墨打印装置及其翻面模式打印方法
CN115027143A (zh) * 2022-06-24 2022-09-09 王功庆 一种圆柱体侧表面uv印刷设备

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Also Published As

Publication number Publication date
EP2860036A1 (fr) 2015-04-15
EP2860036B1 (fr) 2019-12-04
EP2868477B1 (fr) 2017-12-20
ES2661382T3 (es) 2018-03-28
PL2868477T3 (pl) 2018-06-29
ES2768283T3 (es) 2020-06-22
PL2860036T3 (pl) 2020-08-24

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