EP3334606B1 - Machine d'impression pour des récipients et procédé d'impression de récipients - Google Patents

Machine d'impression pour des récipients et procédé d'impression de récipients Download PDF

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Publication number
EP3334606B1
EP3334606B1 EP16727732.6A EP16727732A EP3334606B1 EP 3334606 B1 EP3334606 B1 EP 3334606B1 EP 16727732 A EP16727732 A EP 16727732A EP 3334606 B1 EP3334606 B1 EP 3334606B1
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EP
European Patent Office
Prior art keywords
printing
containers
container table
printing heads
period
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Application number
EP16727732.6A
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German (de)
English (en)
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EP3334606A1 (fr
Inventor
Georg Gertlowski
Matthias Wahl
Peggy Heimer
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Krones AG
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Krones AG
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Publication of EP3334606A1 publication Critical patent/EP3334606A1/fr
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    • 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

Definitions

  • the invention relates to a printing machine for containers and a method for printing containers.
  • containers such as beverage bottles
  • containers can be circulated around stationary treatment units on a container table and, with the containers rotating around them, equipped with printed images and / or labels.
  • the constantly changing distance between the curved container walls and the respective unit is particularly problematic when printing by means of inkjet printheads.
  • the DE 10 2011 009 391 before printheads on a movable along the circumference of a container table mounts in sync with the containers to be printed during printing and the mounts after printing back to their starting position against the transport direction of the container.
  • the print heads are arranged substantially above the container side wall to be printed during printing.
  • the disadvantage here is that the containers must then be placed in a lying position during printing and rotated centered around themselves. In addition to the centering in the mouth region of the containers, this requires the containers to be supported and rolled off in the side wall region. This can cause the containers to run out of round and correspondingly fluctuating pressure gaps.
  • the printheads of the DE 10 2011 009 391 are carried along with the containers over a comparatively large machine angle range, so that the containers cannot be processed as a container stream with a uniform transport division throughout, but only in groups, between the gaps, in order to move the print heads back to their starting position for printing on the next container group . As a result, this machine concept poses considerable problems in terms of insufficient machine performance and centering of the containers.
  • a printing machine for containers according to claim 1. Accordingly, this comprises: a continuously rotatable container table, on which centering brackets for the containers which are rotatable about themselves about vertical axes are arranged distributed uniformly over the circumference at a distance from a transport division; and at least one stationary printing station for printing on the containers.
  • the printing station comprises at least two printheads which are arranged at a distance from one another and which are connected by a common carrier and which are designed to oscillate with the containers and move back and forth within a machine angle segment of the printing press, and in particular of the container table.
  • the oscillation of the printheads comprises a first half-period and a second half-period, the first half-period being used for printing on the containers and the common carrier running with the printheads in accordance with the transport movement of the container table with the associated centering brackets and containers in a constant relative position, after which in the second half-period, the common carrier with the print heads returns to the reversal point at the beginning of the first half-period of the oscillation by a return movement, and the return movement opposite to the transport movement is controlled in such a way that the trailing containers only reach their assigned print heads when these have arrived at the reversal point at the beginning of the first half-period or are waiting there for the trailing containers.
  • Holding and rotating the containers around vertical axes only requires centering in the head region and possibly in the base region of the containers. This makes it easier to maintain a predetermined print distance between a cylindrical container side wall, for example, and a moving print head. For example, standing on turntables, the containers are clamped from above by means of centering heads or the like.
  • each centering bracket of the container table can be equipped with one container in the sense of a continuous container flow.
  • the fact that at least two printheads are moved with the container table at a distance from the transport division means that the machine output can be increased compared to individually carried printheads.
  • the printing station comprises in particular exactly two printheads which are arranged at a distance from one another and which run together with the centering brackets during printing.
  • the machine angle segment is to be understood as an angle segment between the outer reversal points of the printheads which are moved together. This is, for example, the angular segment between a start position of a first print head and the end position of a second print head based on a half period of the oscillation.
  • the print heads are preferably fastened on a common carrier which can be pivoted about the axis of rotation of the container table or can be moved along a circular arc in this regard.
  • the print heads thus oscillate essentially along a circular arc with a constant pressure distance from the respectively assigned centering brackets or containers.
  • the carrier and the print heads are preferably electrically controlled in such a way that the print heads move with the containers during printing at the angular speed of the container table and in particular move back at a higher angular speed in comparison therewith.
  • the print heads can thus be moved synchronously with the containers during printing.
  • the print heads can thus be carried within a first half period of the oscillation, during printing, with a constant position relative to the axis of rotation of the centering brackets or the containers.
  • the duration of a work cycle of the printing station can be shortened compared to an oscillation with identical half-periods. That is, the half period of the synchronized moving of the print heads preferably lasts longer than the subsequent half period of the return of the print heads to their starting position.
  • the carrier is preferably driven by means of an electric motor, in particular a servomotor.
  • an electric motor in particular a servomotor.
  • the electric motor preferably comprises at least one long stator with a guide rail designed as a circular arc segment and at least one rotor guided along it.
  • the long stator is then preferably designed as a motor module with integrated power electronics and position detection for the rotor.
  • the long stator can in particular be aligned concentrically with respect to the axis of rotation of the container table.
  • the long stator can also be supplied inductively with electrical energy by means of an inductive energy supply.
  • the centering brackets are preferably also driven by means of separate electric motors, in particular servomotors. This enables the initial rotational position of the containers for printing and the print feed to be set precisely with respect to the print heads.
  • the print quality can also be set, for example by adjusting the print resolution.
  • the carrier can preferably be controlled in such a way that the machine angle segment is at most three times, in particular at most twice, a machine angle formed between the print heads.
  • two print heads of a printing station enclose a machine angle corresponding to exactly one transport division of the container table.
  • three print heads of a printing station enclose a machine angle corresponding to exactly two transport divisions of the container table.
  • the printing station is preferably of modular design such that it can be docked pointing to the axis of rotation of the container table.
  • several printing stations with uniform mechanical couplings and electrical connections are available.
  • printing stations can be easily exchanged and / or docked in different press angle areas of the press.
  • cameras or further printheads which can be moved synchronously with the oscillating printheads, are also arranged opposite the printheads with respect to a pitch circle for the containers.
  • the cameras and / or further print heads are then preferably arranged within the pitch circle, so that the containers are positioned between them and the print heads oscillating on the holders outside.
  • the print heads are preferably inkjet print heads for direct printing on the containers. This means that high-quality print images can also be produced for different products and / or quality requirements without having to change the print stations.
  • the printing press preferably further comprises a treatment table mechanically interlocked with the container table and continuously rotatable with at least one modular treatment table and stationary dockable treatment station for pretreating the containers, and / or a treatment table mechanically blocked and continuously rotatable with the container table with at least one modular and stationary dockable treatment station for aftertreatment of the containers.
  • a treatment table mechanically interlocked with the container table and continuously rotatable with at least one modular treatment table and stationary dockable treatment station for pretreating the containers
  • / or a treatment table mechanically blocked and continuously rotatable with the container table with at least one modular and stationary dockable treatment station for aftertreatment of the containers.
  • Such treatment stations then preferably comprise at least two treatment modules which are arranged at a distance from one another and which can oscillate with the container within a machine angle segment of the respective treatment table and move back and forth
  • the treatment station upstream or downstream of the printing station for aligning, pretreating, post-treating and / or inspecting the containers on the container table would also be conceivable, the treatment station then comprising at least two treatment modules which are arranged at a distance from the transport division and which are within a further machine angle segment of the printing press or the container table are oscillating with the container and can be moved back.
  • the machine angle range between the inlet and outlet of the containers can be used flexibly for several treatment steps.
  • the individual treatment steps can take place with an oscillating movement of the treatment modules with the machine power of the printing stations, in particular with half-periods of the oscillation as described above for the printing stations.
  • the object is also achieved with a method for printing containers according to claim 11.
  • the containers are transported as a continuous flow of containers at intervals of one transport division to another on a container table.
  • at least two printheads which are connected via a common carrier, oscillate partially circumferentially on the container table at a constant distance from the transport division.
  • the print heads run synchronously with the container table during printing.
  • the containers are rotated around themselves about vertical axes.
  • the oscillation of the printheads comprises a first half-period and a second half-period, with the containers being printed in the first half-period and the common carrier with the printheads corresponding to the transport movement of the container table with the associated centering brackets and containers running in a constant relative position, subsequently in In the second half-period, the common carrier with the print heads returns to the reversal point at the beginning of the first half-period of the oscillation by a return movement, and the return movement opposite to the transport movement is controlled in such a way that the trailing containers only reach their respectively assigned print heads when these have arrived at the turning point at the beginning of the first half-period or are waiting there for the trailing containers.
  • the rotation of the containers is preferably controlled electrically in order to provide the containers with a predetermined pressure during printing, in particular counter to the direction of rotation of the container table Print feed relative to the printheads to rotate itself. This enables high-quality print images that can also be flexibly adapted to different products without having to convert the printing stations.
  • the containers are preferably rotated at least half-circumferentially, in particular fully, around themselves during printing. In this way, continuous and / or qualitatively uniform print images can be generated with constant positioning of the longitudinal axis of the container in front of the print head.
  • the print heads preferably oscillate in a work cycle in which the print heads are moved back within a proportion of at most 40 percent, in particular at most 30 percent, of the duration of the work cycle against the transport movement of the containers. This minimizes the machine angle segment required for printing with a particular printing station. In other words, a machine angle segment available for the printing station can mainly be used for the printing process itself.
  • the duty cycle consists of a first half period of the oscillation for printing and a second half period of the oscillation for moving the print heads back.
  • the print feed on the print head is preferably at least 300 mm / s. This enables the machine performance of the printing press to be optimized for use in beverage filling systems.
  • At least one of the print heads is selectively inactivated in the event of a fault and the printing is continued with the rotation of the container table at a reduced angular speed.
  • the printing press 1 comprises, in a first preferred embodiment, three or a different number of stationary printing stations 2, 3, 4, at each of which a first print head 5 and a second print head 6 on a common carrier 7 for executing an extensive oscillation 8 with respect to a container table 9 which can be rotated continuously in the transport direction 9a.
  • the partial circumferential oscillation 8 of the print heads 5, 6 sweeps over a machine angle range 10, which is defined by an outer reversal point 5a of the first print head 5 and an outer reversal point 6a of the second print head 6.
  • the common carrier and the second printhead are shown with solid lines at the outer reversal point of the first printhead and in dashed lines at the reversal point of the second printhead and provided with the reference numerals 7 'and 6'.
  • the transport division 9b of the container table 9, the pitch circle 9c of the container table 9 for containers 11 to be printed and the axis of rotation 9d of the container table are also indicated.
  • the machine angle segment 10 between the outer reversal points 5a, 6a is two transport divisions 9b. However, this is not absolutely necessary, like the example of Figures 2A to 2C on the basis of a first half period of the oscillation 8 for printing on the container 11.
  • a section of the container table 9 is indicated with centering brackets 12, each of which is equipped with a container 11 to be printed, for example a bottle.
  • the centering brackets 12 can be rotated about vertical axes of rotation 12a and, for example, each comprise a turntable 12c individually driven by an electric motor 12b and a rotatable centering head 12d for the top of the container, see for example that Figure 6 .
  • the common carrier 7 with the first print head 5 and the second print head 6 is indicated schematically.
  • the transport direction 9a is only an example of that of Figure 1 opposite.
  • FIG. 2A shows a state at a first reversal point 8a of the oscillation, that is to say at the beginning of the first half period of the oscillation 8.
  • the first half period is used for printing on the container 11.
  • the machine angle segment 10, which is swept by the print heads 5, 6 during the oscillation 8, is indicated schematically as an arc segment, as is the machine angle 10a formed between the print heads. From the first reversal point 8a, the common movement of the print heads 5, 6 is synchronized with the angular velocity of the container table 9.
  • the print heads 5, 6 thus run in accordance with the transport movement 9a with the associated centering brackets 12 and containers 11 in a constant relative position.
  • the Figure 2B illustrates a state during the first half period in which the print heads 5, 6 which are synchronously running have already partially equipped the containers 11 with a print image 11a.
  • the containers 11 are continuously rotated about the axes of rotation 12a of the centering brackets 12 with a rotational movement 12e which is preferably opposite to the transport movement 9a.
  • the Figure 2C shows the common carrier 7 with the print heads 5, 6 at a second reversal point 8b of the oscillation, that is, at the end of the first half period of the oscillation 8.
  • the printing process has ended at the latest at this point in time and the printed image 11a is preferably formed in full.
  • the container 11 is preferably rotated completely around itself during the synchronized moving of the print heads 5, 6.
  • stationary guide device 7a for example a rail, a suitable swivel mechanism or the like, which can also be part of a linear motor system.
  • the return movement 8c opposite the transport movement 9a is controlled in such a way that the trailing containers 11 'only reach their respectively assigned print heads 5, 6 when they have reached the first reversal point 8a or are waiting there for the trailing containers 11'.
  • the second half period of the oscillation 8 can be shortened for this purpose by executing the return movement 8c with a larger absolute angular velocity than the transport movement 9a.
  • the temporal share of the return movement 8c in a work cycle the printing station 2, 3, 4 is then smaller than the time portion of the synchronous running of the print heads 5, 6 with the centering brackets 12.
  • a work cycle can be realized in which the duration of the second half period of the oscillation or the return movement 8c is merely 40 percent, especially the highest 30 percent, of the work cycle.
  • the machine angle segment 10 required for the oscillation 8 of the print heads 5, 6 can thereby be minimized.
  • the printheads 5, 6 with respect to the pitch circle 9c opposite printheads 15, 16 can be formed on a common support 17 in the region of the container table 9.
  • the common carrier 17 with the further printing heads 15, 16 can then preferably be moved synchronously with the oscillation of the common carrier 7 and the printing heads 5, 6. This applies at least to the synchronous moving with the centering brackets 12 or the containers 11 in the first half period of the oscillation 8, optionally also for the return movement 8c in the second half period. This is in the Figure 1 only indicated schematically.
  • cameras 18, 19 could likewise be designed to run on a common carrier 20 synchronously with the print heads 5, 6 and the common carrier 7 of a printing station 2, 3, 4.
  • the cameras 18, 19 could also be formed on a common carrier 20, for example offset by a transport division 9b, to at least one printing station 2, 3, 4.
  • the cameras 18, 19 could be height-adjustable to check different containers 11 or container areas.
  • treatment modules 21, 22 could be formed with a common carrier 23, which in principle oscillates in the manner described above, at further treatment stations 24 of the printing press 1.
  • a post-treatment unit for drying prints is exemplarily indicated schematically.
  • an inlet star wheel 25 and an outlet star wheel 26 are indicated in the Figure 1 .
  • Servo motors are preferably formed at the printing stations 2, 3, 4 and / or treatment stations 24 for driving the common carriers 7, 17, 20, 23.
  • the centering brackets 12 are preferably rotated individually about themselves by means of servomotors.
  • the centering brackets 12 are preferably rotated counter to the transport movement 9a during printing.
  • the servomotors can be connected to the carriers 7, 17, 20, 13 and the centering brackets 12 by means of conventional drive technology and are therefore not shown separately.
  • the Individual servomotors of the printing press 1 can be controlled in a flexible manner by means of conventional control devices 27 and preferably bidirectional data exchange 27a.
  • the oscillation 8 and the rotary movement 12e of the centering brackets 12 about themselves can be flexibly adapted in this way to the transport movement 9a of the container table 9 and the required print quality on the containers 11 and their diameter.
  • the servo motors enable individual setting of the initial rotational position of individual containers 11 for printing.
  • the possibly random rotational position of the individual containers 11 when entering the printing press 1 can be recognized, for example, by means of an alignment unit (not shown) and corrected for the subsequent printing processes in the initial rotational position.
  • the common supports 7 preferably comprise carriages or runners which are movable in the circumferential direction and thus run along an arc 9e along the container table 9.
  • Corresponding pivoting devices, which enable pivoting about the vertical axis of rotation of the container table 9, are also conceivable.
  • the printing machine 1 can be used as follows:
  • the containers 11 are transferred to the container table 9 as a continuous container flow with a uniform transport division 9b, so that each centering bracket 12 is equipped with one container 11 downstream of the inlet star 25.
  • the containers 11 are fed to the printing stations 2, 3, 4 in this way and the print heads 5, 6 are moved synchronously on the common supports 7 with the containers 11 as soon as the containers 11 reach the assigned print heads 5, 6 to have.
  • the print heads 5, 6 then run synchronously with the containers 11 over a predetermined machine angle segment 10, until a predetermined print image 11a has preferably been applied in full on the containers 11. However, a full print is not absolutely necessary.
  • the carriers 7 then move back to their starting position for printing on the subsequent containers 11.
  • the machine angle segment 10 provided for the printing process can in principle be set as desired depending on the size of the printed image 11a, the desired quality of the printed image 11a, the rotational speed of the container table 9, the container diameter and / or the printing speed possible with the print heads 5, 6.
  • the containers 11 could be printed in the area of the first printing station 2 with a first color component of a color model, such as RGB or CMYK, and in the subsequent printing stations 3, 4 with further color components of the same color model.
  • a first color component of a color model such as RGB or CMYK
  • the use of servomotors in the printing stations 2, 3, 4 and in the centering brackets 12 ensures high precision of the individual partial printed images with respect to one another.
  • Carrying the print heads 5, 6, 15, 16, the cameras 18, 19 or other treatment modules 21, 22 synchronized within the machine angle segments 10 enables treatment or inspection with a constant relative position between the centering brackets 12 and the individual print heads / cameras / treatment modules comparatively high machine performance.
  • three printheads / cameras / treatment modules could each be attached to a common support 7, 17, 20, 23 and carried synchronously with the centering brackets 12 and the containers 11 by means of partial oscillation 8.
  • the partial oscillation 8 corresponds to a work cycle of the printing stations 2, 3, 4. This can be composed, for example, of a first half period for printing from 50 to 80% and a second half period from 50 to 20% to a total of 100%.
  • one of the print heads 5, 6 fails, it is only conceivable to deactivate the defective print head and the functionally corresponding print heads of further printing stations and to let the printing press 1 continue to run at half the power until the defect has been remedied. A total failure of the printing press 1 due to a defect in an individual print head 5 can thus be avoided or at least minimized in time.
  • the printing machine 31 in a second preferred embodiment comprises a plurality of modular printing stations 32 to 37, which can be designed, for example, for printing with different colors.
  • Each of the printing stations 32 to 37 comprises a first print head 5 and a second print head 6, which are fastened to a common carrier 7 for executing the partial circumferential oscillation 8, as was described above for the printing press 1 of the first embodiment.
  • All of the functions previously described with regard to the printing stations 2, 3 and 4 can also be carried out with the modular printing stations 32 to 37, so that the partial oscillation 8 and the associated printing processes for the printing press 31 of the second embodiment are not described and shown again. Consequently, in the Figures 3 to 6 Equally functionally equivalent elements and symbols with the same reference numerals as in the Figures 1 and 2A to 2C .
  • the printing machine 31 of the second embodiment differs from the printing machine 1 of the first embodiment essentially in that only one input-side treatment module 38 for aligning the rotational position of the containers 11 and otherwise only modular printing stations 32 to 37 are docked stationary on the container table 9. Further treatment stations 39, 40 for pretreating the containers 11 by means of flaming, corona treatment or plasma treatment, and a treatment station 41 for applying and drying a primer or the like are docked stationary on an entrance-side first treatment table 42. Likewise, on the output side, a treatment station 43 for UV drying, a treatment station 44 for imaging container inspection and / or a treatment station 45 for sealing the printed containers 11 with a protective layer, a varnish or the like are docked stationary on a second treatment table 46 on the output side.
  • Transport stars 47 are formed, for example, in a manner known per se between the container table 9 and the treatment table 42, 46 on the input or output side. A corresponding transport star 47 can also be formed at the entrance of the treatment table 42.
  • the transport stars 47 can handle the containers 11, for example, by neck handling, in particular if the containers 11 are empty containers acts.
  • the container table 9 and the treatment tables 42, 46 are thus preferably mechanically interlocked.
  • a conventional machine inlet 48 with a feed screw or the like and a conventional machine outlet 49 which can include, for example, a multifunctional star 49a, a transfer star 49b and / or a conveyor path 49c, are also schematically indicated. These optional diversion variants are in the Figure 3 partially shown in dashed lines.
  • an optionally block-type stretch blow molding machine 100 connected to the printing machine 31.
  • the printing machine 31 of the second embodiment offers the advantage over the first embodiment that the entire area of the container table 9 can be used for aligning and printing the containers 11 and mutual impairments of different treatment steps due to the spatial division on the container table 9, the first treatment table 42 and the second treatment table 46 can be avoided.
  • the printing stations 32 to 37 each comprise a mobile underframe 50, an ink supply 51, a frame 52 and an attached long stator 53 with a guide profile or the like and ball-guided runners 54, on which the first and second print heads 5, 6 by means of of the common support 7 are attached.
  • the print heads 5, 6 are connected to the ink supply 51, for example, by supply lines 55 with quick connectors or the like.
  • the modular printing stations 32 to 37 further preferably comprise a cover 56, the interior of which can be air-conditioned, for example.
  • the subordinate 50 can be designed, for example, as an aggregate carriage that can be moved on rollers 57.
  • individual modular printing stations 32 to 37 can be docked stationary, for example with the aid of mechanical couplings 58, laterally in the region of the container table 9.
  • the modular printing stations 32 to 37 are connected, for example, by means of a plug connection (not shown) to the container table 9 for supplying energy and for transmitting data.
  • the individual units present in the printing station 32 to 37 can thus be supplied with electrical and / or pneumatic energy as well as controlled centrally by the printing machine 31.
  • the individual modular printing stations 32 to 37 identified by the printing machine 31. This also applies to further treatment stations 39 to 41 and 43 to 45.
  • An embodiment of the printing machine 31 is particularly advantageous, in which it transmits address information to the individual printing stations 32 to 37 and to the treatment stations 38 to 41 and 43 to 45.
  • address information is, for example, an internet protocol address.
  • the address information can be transmitted both before the opposite transmission of identification data to the printing press 31 and afterwards. It is particularly advantageous here for the operator to assign fixed Internet protocol addresses via the printing press 31 to the individual modular printing stations 32 to 37 and modular treatment stations 38 to 41 and 43 to 45.
  • a transmission of the address information from the printing press 31 to the individual modular ones is particularly advantageous here Printing stations and / or treatment stations before the transmission of the respective identification data to the printing press 31. In this case, the communication between the container table 9 and the individual modular printing stations and / or treatment stations can take place under the assigned address information, for example a corresponding network address.
  • the Figure 6 shows a modular printing station 32 to 37 in the docked state on the container table 9.
  • a motor-operated docking station 60 is preferably formed on the treatment table 9, with which the printing station 32 to 37 locked by means of the couplings 59 can be raised, so that the Rollers 57 are relieved.
  • the printing station 32 to 37 is then in a position that is stationary and mechanically fixed with respect to the container table 9.
  • centering brackets 12 are shown in a preferred embodiment with turntables 12c, servomotors 12b, centering heads 12d and lifting units 12f assigned to them.
  • the long stator 53 is designed in the form of a circular arc, so that the print heads 5, 6 run concentrically to the axis of rotation 9d of the container table 9 along a circular arc 9e.
  • individual ring segments of the long stator are designed as motor modules comprising power electronics and path detection for the runners 54.
  • the associated runners 54 have, for example, a play-free roller bearing on the long stator 53.
  • the motor modules then act equally as a guide rail and as an active drive for the runners 54. This allows the movement sequences described above for the partially circumferential Execute oscillation 8 in a precise and flexible manner and adapt to the respective requirements when printing on the container 11.
  • modular printing stations 32 to 37 and the modular treatment stations 38 to 41 and 43 to 45 do not necessarily have to be mobile. These could just as well stand on spherical feet and be detachably docked in the area of the container table 9 or the treatment tables 42, 46. Rather, modular is to be understood to mean that the individual modular stations have interfaces of the same type, so that they can be exchangeably attached to the container table 9 or to the treatment tables 42, 46.
  • modular treatment stations shown as examples can be used in the same way as those in FIGS Figures 3 to 5 shown printing station 32 to 37 based on a combination of the treatment modules 5, 6 corresponding treatment modules, which are movable by means of runners 54 on a long stator 53 along an arc.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Printing Methods (AREA)

Claims (15)

  1. Machine d'impression (1, 31) pour récipients (11), avec une table à récipients (9) tournant en continu, sur laquelle sont disposés des supports de centrage (12) pour les récipients, qui peuvent tourner autour d'axes verticaux (12a) sur eux-mêmes, à distance d'une division de transport (9b) et répartis uniformément sur la circonférence, et avec au moins une station d'impression fixe (2 - 4, 32 - 37) pour l'impression des récipients, la station d'impression comprenant au moins deux têtes d'impression (5, 6) qui sont disposées à distance l'une de l'autre dans le pas de transport, sont reliées par un support commun (7) et peuvent être déplacées de manière oscillante à l'intérieur d'un segment angulaire (10) de la machine d'impression, en avançant avec les récipients et en reculant,
    dans laquelle l'oscillation des têtes d'impression comprend une première demi-période et une seconde demi-période, la première demi-période étant destinée à l'impression sur les récipients (11), le support commun avec les têtes d'impression se déplaçant avec les supports de centrage associés et les récipients en position relative constante en fonction du mouvement de transport (9a) de la table des récipients,
    dans laquelle, par la suite, dans la deuxième demi-période, le support commun avec les têtes d'impression revient au point d'inversion (8a) au début de la première demi-période d'oscillation par un mouvement de retour (8c), et
    dans laquelle le mouvement de retour opposé au mouvement de transport est contrôlé de telle sorte que les récipients arrière (11 ') n'atteignent leur tête d'impression associée respective que lorsque celle-ci est arrivée au point de retournement au début de la première demi-période ou y attend les récipients arrière.
  2. Machine d'impression selon la revendication 1, dans laquelle les têtes d'impression (5, 6) sont montées sur un support commun (7) qui peut être pivoté autour de l'axe de rotation (9d) de la table à récipients (9) ou déplacé le long d'un arc de cercle correspondant.
  3. Machine d'impression selon la revendication 2, dans laquelle le support (7) et les têtes d'impression (5, 6) sont commandés électriquement de sorte que les têtes d'impression se déplacent avec les récipients (11) à la vitesse angulaire de la table à récipients (9) pendant l'impression, et en particulier se déplacent en arrière à une vitesse angulaire plus élevée en comparaison.
  4. Machine d'impression selon les revendications 2 ou 3, dans laquelle le support (7) est entraîné au moyen d'un moteur électrique, en particulier un servomoteur.
  5. Machine à imprimer selon la revendication 4, dans laquelle le moteur électrique comprend au moins un long stator (53) en forme de segment d'arc circulaire avec un rail de guidage et au moins un rotor (54) guidé le long du rail de guidage.
  6. Machine d'impression selon l'une des revendications 2 à 4, dans laquelle le support (7) peut être commandé de telle manière que le segment d'angle de machine (10) comprend au maximum trois fois un angle de machine (10a) formé entre les têtes d'impression (5, 6).
  7. Machine d'impression selon au moins l'une des revendications précédentes,
    dans laquelle la station d'impression (32 - 37) est conçue de manière modulaire de telle sorte qu'elle peut être amarrée en pointant sur l'axe de rotation (9d) de la table à récipients (9).
  8. Machine d'impression selon au moins l'une des revendications précédentes,
    dans laquelle en outre, par rapport à un cercle primitif (9c) pour les récipients (11), des caméras (18, 19) ou d'autres têtes d'impression (15, 16) sont disposées en face des têtes d'impression (5, 6), qui peuvent être déplacées de manière oscillante en synchronisme avec les têtes d'impression (5, 6).
  9. Machine d'impression selon au moins l'une des revendications précédentes,
    dans laquelle les têtes d'impression (5, 6) sont des têtes d'impression à jet d'encre pour l'impression directe des récipients (11).
  10. Machine d'impression selon au moins l'une des revendications précédentes, comprenant en outre une table de traitement (42) verrouillée mécaniquement avec la table à récipients (9) et pouvant tourner en continu, avec au moins une station de traitement (39-41) stationnaire et pouvant être amarrée de manière modulaire pour le prétraitement des récipients (11), et/ou comprenant une table de traitement (46) verrouillée mécaniquement avec la table à récipients (9) et pouvant tourner en continu, avec au moins une station de traitement (43-45) stationnaire et pouvant être amarrée de manière modulaire pour le post-traitement des récipients (11).
  11. Procédé d'impression de récipients (11), dans lequel ceux-ci sont transportés sous forme d'un flux continu de récipients sur une table à récipients (9) à une distance d'une division de transport (9b) respective l'un de l'autre et au moins deux têtes d'impression (5, 6), qui sont reliées par un support commun (7), oscillent partiellement sur la circonférence de la table à récipients à la distance de la division de transport l'une de l'autre, et dans lequel les têtes d'impression tournent en synchronisme avec la table à récipients pendant l'impression et les récipients sont tournés autour d'eux-mêmes autour d'axes verticaux (12a),
    dans lequel l'oscillation des têtes d'impression comprend une première demi-période et une seconde demi-période, dans lequel, dans la première demi-période, les récipients (11) sont imprimés, et dans lequel le support commun avec les têtes d'impression se déplace avec les supports de centrage et les récipients associés en position relative constante selon le mouvement de transport (9a) de la table des récipients,
    dans lequel, par la suite, dans la deuxième demi-période, le support commun avec les têtes d'impression revient au point d'inversion (8a) au début de la première demi-période d'oscillation par un mouvement de retour (8c), et
    dans lequel le mouvement de retour opposé au mouvement de transport est contrôlé de telle sorte que les récipients arrière (11') n'atteignent leur tête d'impression associée respective que lorsque celle-ci est arrivée au point de retournement au début de la première demi-période ou y attend les récipients arrière.
  12. Procédé selon la revendication 11, dans lequel le mouvement de rotation (12b) des récipients (11) autour d'eux-mêmes est commandé électriquement afin de faire tourner les récipients pendant l'impression au moins de façon semi-circonférentielle et en particulier au moins entièrement autour d'eux-mêmes avec une avance d'impression prédéterminée par rapport aux têtes d'impression (5, 6), en particulier dans le sens opposé au mouvement de transport (9a) de la table de récipients (9).
  13. Procédé selon l'une des revendications 11 à 12, dans lequel les têtes d'impression (5, 6) oscillent dans un cycle de travail dans lequel les têtes d'impression sont ramenées contre le mouvement de transport (9a) de la table de récipient (9) dans une proportion de 40% au maximum, en particulier de 30% au maximum, de la durée du cycle de travail.
  14. Procédé selon l'une des revendications 11 à 13, dans lequel l'avance d'impression au niveau de la tête d'impression (5, 6) est d'au moins 300 mm/s.
  15. Procédé selon l'une des revendications 11 à 14, dans lequel au moins l'une des têtes d'impression (5, 6) est sélectivement désactivée en cas de défaut et l'impression est poursuivie à une vitesse angulaire réduite tout en faisant tourner la table du récipient (9).
EP16727732.6A 2015-08-11 2016-06-09 Machine d'impression pour des récipients et procédé d'impression de récipients Active EP3334606B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015215295.2A DE102015215295A1 (de) 2015-08-11 2015-08-11 Druckmaschine für Behälter und Verfahren zum Bedrucken von Behältern
PCT/EP2016/063126 WO2017025217A1 (fr) 2015-08-11 2016-06-09 Machine d'impression pour des récipients et procédé d'impression de récipients

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EP3334606A1 EP3334606A1 (fr) 2018-06-20
EP3334606B1 true EP3334606B1 (fr) 2020-06-17

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CN (1) CN208290741U (fr)
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US11207898B2 (en) * 2017-04-26 2021-12-28 Pailprint (Pty) Ltd Print bar structure, a printing apparatus, and a method of printing
DE102017111598A1 (de) 2017-05-29 2018-11-29 Krones Ag Kamera für Übergabeüberwachung
DE102017215446A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckmaschine zum Direktbedrucken von Behältern
DE102017215430A1 (de) * 2017-09-04 2019-03-07 Krones Ag Direktdruckmaschine und -verfahren zur Bedruckung von Behältern mit einem Direktdruck
DE102017215459A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckmaschine zum Direktbedrucken von Behältern
CN114104785A (zh) * 2021-12-10 2022-03-01 南昌印钞有限公司 一种印刷输纸机预装纸设备
CN115583102B (zh) * 2022-11-02 2023-07-14 广东赛肯户外运动器械有限公司 一种渔轮双面自动印刷机

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GB2250952B (en) * 1990-11-28 1994-02-16 Harry Thomason Apparatus for applying printed matter to objects
DE102007050490A1 (de) * 2007-10-19 2009-04-23 Khs Ag Vorrichtung und Verfahren zum Bedrucken von Behältern
WO2009018893A1 (fr) * 2007-08-03 2009-02-12 Khs Ag Dispositif et procédé pour décorer des contenants par impression
DE102008012502B4 (de) 2008-03-04 2021-05-12 Krones Aktiengesellschaft Vorrichtung zum kontinuierlichen Bedrucken von Behältern mit gekrümmter Druckfläche
DE102009013477B4 (de) * 2009-03-19 2012-01-12 Khs Gmbh Druckvorrichtung zum Bedrucken von Flaschen oder dergleichen Behältern
DE102011009391A1 (de) 2011-01-25 2012-07-26 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Bedrucken von Behältern
DE102013208065A1 (de) * 2013-05-02 2013-07-04 Krones Ag Rundläufermaschine zur Bedruckung von Behältern

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CN208290741U (zh) 2018-12-28
DE102015215295A1 (de) 2017-02-16
WO2017025217A1 (fr) 2017-02-16
EP3334606A1 (fr) 2018-06-20

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