EP2977212B2 - Machine d'impression directe dotée de système d'alimentation en encre - Google Patents

Machine d'impression directe dotée de système d'alimentation en encre Download PDF

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Publication number
EP2977212B2
EP2977212B2 EP15172843.3A EP15172843A EP2977212B2 EP 2977212 B2 EP2977212 B2 EP 2977212B2 EP 15172843 A EP15172843 A EP 15172843A EP 2977212 B2 EP2977212 B2 EP 2977212B2
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EP
European Patent Office
Prior art keywords
ink
printing
carousel
tank
printing machine
Prior art date
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Not-in-force
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EP15172843.3A
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German (de)
English (en)
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EP2977212A3 (fr
EP2977212A2 (fr
EP2977212B1 (fr
Inventor
Frank Winzinger
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Krones AG
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Krones AG
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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
    • B41J3/407—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

Definitions

  • the present invention describes a direct printing machine for printing containers, such as bottles, and a corresponding printing method.
  • Direct printing machines for printing are known from the prior art.
  • a direct printing machine which has an ink supply which is arranged in a stationary part of the direct printing machine.
  • This ink supply system includes a main tank in the stationary part of the machine. From this, ink is transferred to one or more printing modules, for example via rotary distributors.
  • the printing modules are located in the rotating part of the printing machine.
  • Auxiliary tanks can also be assigned to the pressure modules.
  • the EP 2605909 B1 shows a direct printing machine with several printing modules, each of which is arranged with a container receptacle running along on the carousel and enables a container to be printed at different heights.
  • the print modules each require separate ink supplies.
  • the problem to be solved by the invention is to provide a direct printing machine that includes an improved ink supply system.
  • an ink supply system comprising at least two ink tanks and at least one supply line that can supply ink from the ink tanks to at least one of the printing stations, is arranged on the direct printing machine so that it rotates with the carousel.
  • the arrangement of the ink supply system running on the carousel facilitates the ink supply to the individual printing stations. Structurally complicated rotary distribution systems can be dispensed with.
  • the machine is rotary ink manifold-less and the ink tanks are concentric and stacked with respect to the axis of rotation of the carousel.
  • the ink tank and the entire ink supply system are arranged on the rotating part of the direct printing machine. This means that the tank and/or the entire ink supply system rotates with the carousel/the rotating part of the machine when it is in operation. This means that there is no stationary tank, that is to say one that is arranged in the stationary part of the machine so that it is stationary relative to it, and that the ink supply system is designed without a rotary distributor.
  • a stationary tank which can only be connected to the direct printing machine when it is at a standstill, it being possible for the stationary tank to be connected to the ink tanks via two refill connections which are connected to the ink tanks and which are arranged on the periphery of the carousel and between two adjacent printing stations .
  • each printing station comprises a printing segment that contains at least one printing module and is detachably connected to the station, with the printing module being connected to a supply line when installed. An exchange of the pressure segments can be easily guaranteed.
  • Each printing station on the carousel or each printing segment comprises, as an embodiment of the printing module, in particular at least one digitally controlled ink jet print head.
  • each printing station comprises a container receptacle, the container receptacle and the pressure segment being designed as separate components or as one component. This makes it easier to exchange the pressure segments, since the container receptacles do not have to be exchanged at the same time.
  • the printing segment comprises a plurality of printing modules which are arranged concentrically around the longitudinal axis of a container located in the printing station.
  • the concentric arrangement allows a simple supply of ink via appropriate supply lines, for example from above.
  • the direct printing machine can be characterized in that each printing module is assigned a shield that can be moved between a rest position and a shielding position in which the shield shields printing nozzles of the printing module.
  • the shielding of the individual print modules protects the print nozzles from contamination by ink from other print modules in the vicinity and can be used, for example, when using UV light to cure ink on the container, to prevent ink from drying on the print nozzles.
  • the direct printing machine is characterized in that the ink supply system also has at least one controllable feed pump for pumping ink from the ink tank to the printing stations and at least one Return pump are provided for pumping ink from the printing stations in the ink tank.
  • the ink supply system also has at least one controllable feed pump for pumping ink from the ink tank to the printing stations and at least one Return pump are provided for pumping ink from the printing stations in the ink tank.
  • the supply line can comprise at least one main line for transporting ink from the ink tank, which extends at least along part of the circumference of the carousel, with one or more secondary lines leading from the main line to the printing stations and at least one branch line from each of the printing stations to the main line lead, wherein ink can be discharged from the ink tank via a first connection of the main line to the ink tank and introduced into the ink tank via a second connection of the main line.
  • the number of pumps required can be reduced since it is sufficient if a corresponding pressure is produced in the main line provided. Ink can also be saved in this way, since unused ink can be pumped back into the ink tank.
  • a further embodiment provides that several ink tanks are provided, each ink tank being assigned separate feed lines, the ink tanks being arranged either concentrically around an axis of rotation of the carousel or one above the other parallel to the axis of rotation of the carousel or distributed non-concentrically.
  • the ink tanks With a large number of ink tanks, on the one hand more complex print images can be generated (e.g. multicolored) and on the other hand it is possible to prevent machine downtimes due to an empty ink tank.
  • each tank is preferably assigned to a specific ink color.
  • the inks stored in the tanks can have different colors in pairs, but several tanks or a subset of the tanks can also contain the same color.
  • the ink supply system can be arranged in the carousel.
  • the arrangement of the ink supply system directly in the carousel offers the advantage that the supply lines can be kept as short as possible.
  • the refill connection is arranged between two adjacent printing stations.
  • a refilling of the ink tanks or the ink tank can thus be guaranteed by stopping the direct printing machine in a position suitable for the operator to reach the refill connection.
  • the refilling connection can be placed at a height of between 0.1 and 2.5 m and preferably between 0.5 and 2 m above the ground on which the machine is installed.
  • multiple refill connections can also be present, each of which is assigned to a tank.
  • the individual refilling connections can be arranged at the same position in the circumferential direction of the machine, for example at different heights, or alternatively between respective different stations at the same height.
  • the arrangement at the same position in the circumferential direction means that the refilling connections are all arranged between exactly two adjacent printing stations.
  • the refill connections can, for example, be arranged as "bundles" between the printing stations or, for example, can be arranged at a distance from one another on a straight line parallel to the axis of rotation of the carousel.
  • each printing segment or each printing station includes a rotary drive which is coupled to the receptacle for the containers. With the drive, the containers are rotated relative to the carousel during printing, in particular about their longitudinal axis, in order to generate a relative movement from the print head to the container.
  • the machine particularly preferably rotates continuously during operation. In certain cases, however, it can also be operated intermittently.
  • only one color is provided in a machine and several similar machines are set up one after the other in the direction of transport of the containers in order to successively apply different colors to the container.
  • the stationary tank is provided with a connection which, according to the invention, can only be connected to the machine when it is at a standstill.
  • This can be designed in such a way that it has a coupling which can be automatically docked to the refill connection or connections via drives.
  • a pump can be provided for this purpose in the stationary part, which is activated for refilling.
  • the machine rotates about a vertically oriented axis of rotation that intersects the center of the earth.
  • An additional auxiliary tank (per colour) can also be provided on the rotating part of the machine, which is constantly fed by a main tank which also rotates and which is refilled according to the invention.
  • the auxiliary tank can be at a certain level and its level can always be kept constant by regulation using a sensor. From the auxiliary tank, the ink arrives in particular at the feed pump already mentioned.
  • the method according to the invention for printing containers such as bottles is characterized in that the containers are picked up and printed by printing stations on a rotating carousel, with an ink supply system rotating with the carousel supplying ink from an ink tank to at least one of the printing stations via a supply line, the Direct printing machine is formed ink rotary distributorless and wherein the ink tanks are arranged concentrically and one above the other with respect to the axis of rotation of the carousel.
  • a stationary tank is provided with a connection which is only connected to the direct printing machine when it is at a standstill, the stationary tank being connected to the ink tanks via two refill connections connected to the ink tanks, which are arranged on the circumference of the carousel and between two adjacent printing stations, for refilling the ink tanks.
  • This process allows the printing stations to be supplied with ink much more directly, while long transport distances for the printing ink can be minimized.
  • the method is characterized in that ink is pumped from the ink tank into the supply line via a controllable supply pump and ink is pumped back into the ink tank via a return pump, the pumping capacity of the return pump being higher at all times than the pump line of the supply pump, so that there is a vacuum at the pressure nozzles of the printing station.
  • the pump capacity of the feed pump is controlled as a function of the fill level of the ink tank and/or as a function of the rotational speed of the carousel.
  • a desired pressure level in the lines for printing can thus be set at any time depending on the operating parameters.
  • the refill port may be located between two adjacent printing stations.
  • the carousel when refilling of the ink tank is necessary, the carousel can be stopped in a position where the refill port is accessible from outside the direct print machine. Downtimes for refilling printing ink can thus be minimized and the overall throughput or the overall performance of the machine can be increased.
  • the machine comprises at least one conveyor that brings the containers into the machine and one that discharges the printed containers from the machine. The rotational position when the machine is stopped is chosen so that the refilling connection comes to a stop at a different position in the circumferential direction than the two conveyors.
  • ink is transported from the ink tank along a main line and supplied to individual printing stations via secondary lines and conducted from the printing stations into the main line via derivations, with the ink being conducted from the ink tank into the main line via a first connection of the main line and via a second Connection of the main line is routed from the main line into the ink tank.
  • only one feed pump and one return pump are required, which produce a desired pressure level in the main line, with the ink being supplied to the individual printing stations via the secondary lines, which enables a targeted pressure supply.
  • a filling level sensor is arranged in each tank of the machine, with which the filling level of the tank is measured.
  • the operator can be shown (for example on a touch screen of the machine) how much ink is left in the tank or how long the machine can still be operated at the current performance with the current filling.
  • a warning signal can also be given at a certain remaining production time so that the operator can prepare to refill the tank.
  • the machine can stop automatically when the tank is empty.
  • the containers to be printed are in particular PET bottles.
  • a method for cleaning the ink supply is also provided.
  • residues of ink are first removed from the tank or tanks via a drain connection (and reused if necessary after cleaning) and then a cleaning agent is poured into the refill connection or refill connections, which is used by the existing pumps (supply pump and return pump for example) is passed through the ink supply system over a period of time.
  • the cleaning agent in particular liquid, is removed via a drain connection and refilled with ink.
  • cleaning can be performed at regular intervals, or, for example, when an operator refills a tank with the wrong color of ink. In order to avoid the latter, there can be a system on the refilling connections which avoids incorrect refilling.
  • adapters specifically provided for the color can be provided on the refill connection and refill cartridges adapted to them, which are adapted to one another via an individual geometry of the connection opening or the pouring openings of the cartridges.
  • the method of cleaning and/or the system on the refilling connections may be additional to the machine, but it may also be an invention independent of what has been described previously.
  • the direct printing machine is designed as a rotary machine with a carousel 101 .
  • the carousel 101 is arranged on a stationary part 120 of the container treatment machine and comprises one or more printing stations 110 on the periphery of the entire carousel, which can print on a container.
  • the printing stations include at least one printing segment 111, in which one or more printing modules can be arranged.
  • the spatial arrangement of the printing modules in the printing segment is arbitrary.
  • the printing modules can be arranged at a constant distance around a bottle or container 130 introduced into the printing station, for example on a semicircle. Alternatively, several printing modules can be arranged one above the other in planes running parallel to the axis of rotation. Combinations of these are also possible.
  • An ink supply system 103 is provided to ensure that the print modules are supplied with ink.
  • This ink supply system is arranged to rotate with the carousel 101, it not necessarily having to be located directly in the carousel.
  • the ink supply system comprises at least one ink tank 102, in which the ink required for printing the container is stored, and one or more supply lines 131 to 13n, each of which is connected to a respective printing segment or a printing module of a printing segment.
  • At least two ink tanks are provided according to the invention. In particular when multicolored printing is intended, it is advantageous to provide separate ink tanks which, according to the invention, are stacked are arranged concentrically parallel to the axis of rotation or, for example, are distributed non-concentrically rotating with the carousel.
  • the ink tanks are preferably mounted directly on the carousel, so that no additional space has to be kept free in the standing part 120 of the printing machine 100 in order to allow the ink tanks to be rotated.
  • the tanks can be designed as ring lines.
  • rotary machines or carousels are provided, each of which can realize a single-color print.
  • the containers can then be transferred from one carousel to the next and a corresponding monochrome print can be applied in each carousel.
  • a central carousel can be provided, which enables both the feeding of the containers and the removal of the containers to and from the respective carousels.
  • the individual carousels that carry out the printing then have an ink tank and a corresponding ink supply system and can be used according to the in 1 be formed carousel shown.
  • several carousels, which provide the containers with all colors can be supplied from a central distributor.
  • Figure 2a +b show top views of a direct printing machine 100, the lines to the individual printing segments or printing modules 211-218 also being shown.
  • a central tank 102 is provided, which is arranged concentrically around the axis of rotation R.
  • the configurations according to Figures 2a and 2b can also be applied to a plurality of tanks which, according to the invention, are arranged concentrically one above the other, parallel to the axis of rotation, or which, for example, are distributed non-concentrically on the carousel.
  • the shape of the ink tank is also arbitrary.
  • cylindrical tanks arranged concentrically to the axis of rotation R of the carousel can be provided.
  • ink tanks can also be adapted to the rest of the carousel structure in order to leave enough space for other components such as control or cooling. It can also be provided that more than one ink tank is provided per color.
  • auxiliary tanks can be provided in the rotating part of the direct printing machine, rotating with the carousel. These can provide a temporary supply of ink when the main tanks are empty or nearly empty to reduce downtime.
  • a main line 205 is provided through which ink can be conveyed from the ink tank 102.
  • At least one feed pump 281 and one return pump 282 are provided for this purpose.
  • the feed pump 281 pumps ink out of the tank 102 and transports it through the main line 205 at a certain pressure.
  • the return pump 282, on the other hand, sucks the ink out of the main line and feeds it back into the ink tank 102 in the direction of the arrow shown.
  • On the main line 205 one or more secondary lines 251-258 are arranged, which lead from the main line to the pressure segments 211-218.
  • each secondary line comprises two separate lines, not shown, one of which contains ink from the main line to the print module and the other ink from the print module back to the main line.
  • the first line 257 in the series can have a larger diameter than the last line 256.
  • the main line is particularly broken at this point and leads directly to the print head - or in other words there is the secondary lines do not, but the main line leads directly to the print heads.
  • main lines 250 and 260 are provided, which can supply a specific angular section of the carousel 101 or printing stations or printing segments arranged in this area with printing ink from the ink tank.
  • the structure of the individual main lines and secondary lines 250 and 251-253 or 260 and 261-263 is analogous to those as shown in Figure 2a have been described. Choosing a shorter main line can, however, favor the creation of certain pressure conditions in the lines.
  • a feed pump 281 or 283 and a return pump 282 or 284 are provided on the respective main lines 250 and 260 .
  • FIG. 2a and 2b shows 1 an embodiment in which separate leads lead from the ink tank to each individual print segment of a print station.
  • a supply and a return pump it is necessary for a supply and a return pump to be attached to the respective supply lines, so that ink can be conveyed from the ink tank to the respective printing station on the "outward way" and ink can be conveyed from the printing station or The respective print module or print segment can be transported back into the ink tank.
  • the pump capacity of the feed pump can be set in a controllable manner, so that it can be set as a function, for example, of the rotational speed of the carousel and/or as a function of the filling level of the respective ink tank.
  • the mains in the 1 and 2a +b each act on the side of the ink tank or lead back to it, it is particularly advantageous if the line leading out of the ink tank acts on the underside of the ink tank and the line leading back into the ink tank is arranged on the top of the ink tank.
  • the bottom of the ink tank is the side that is closer to the center of the earth or to the surface or ground on which the direct press is installed.
  • one embodiment provides for the entire ink supply system to be arranged directly in the carousel.
  • each print segment 330 and the corresponding printing modules 331-334 can be designed for printing the container surface in different colors. This means that the individual print modules are each connected via lines 311-314 to pairs of different ink tanks, so that each print module applies a different color to the surface of the container from the other print modules. However, this is not absolutely necessary. In this way, each printing module can also apply the same color, for example black or blue, to the surface of the container. In this case, each printing module can be provided for applying the printing ink in a different area from the rest of the printing module, or each printing module can bring about the application of a specific motif.
  • a centering device which comprises a centering bell 371 and a stationary or rotating plate 372 assigned to this centering bell.
  • the container shown in dashed lines can be clamped and fixed and optionally rotated about its longitudinal axis or, for example, moved up and down parallel to its longitudinal axis.
  • the rotary drive can also be moved to the centering bell 371 in order to dispense with the turntable 372 or the lower receptacle and to accommodate the containers hanging in the centering bell (e.g. via a bracket additionally attached to the centering bell, which is attached to another part of the mouth area of the container (e.g. carrying ring) attacks).
  • the arrangement of the pressure segment 330 of the individual pressure modules 331-334 is provided independently of the centering device, so that two separate assemblies are involved.
  • the pressure segment 330 as a whole or each one of the pressure modules 331-334 can be removed is provided in the printing station 110.
  • quick-change connections to the lines 311-314 can enable pressure modules 331-334 to be exchanged or removed and inserted in an uncomplicated manner.
  • self-sealing couplings can be provided on each line for this purpose, which close themselves when they are released, so that no ink can run out.
  • the print segment 430 is provided as a kind of frame on which the print modules 431-433 are arranged.
  • This frame can be a frame into which the print modules can be clicked or screwed, for example.
  • the entire print segment is preferably connected to the carousel 101 via connections 481 and 482, such as plug-in or screw connections, so that it can also be removed from the carousel as a whole.
  • An additional expansion of individual print modules 431-433 is advantageous.
  • the individual print modules 431-433 are connected to the ink tank 102 via the corresponding supply lines 411-413.
  • the ink tank is divided into three separate individual tanks 421-423, which are each connected to only one supply line 411-413.
  • a drain can also be integrated in the supply lines - depending on whether a vacuum is required at the print head 411-413.
  • the ink tanks are arranged concentrically one above the other parallel to the axis of rotation of the carousel. While they appear to have similar sizes in the illustration, a correspondingly adapted ink tank with a corresponding filling volume can of course be used depending on the necessary ink requirement for the individual printing modules.
  • the printing modules 431-433 on the printing segment 430 are arranged closer to the axis of rotation R of the carousel than the container 490 clamped in the centering device, it is also conceivable in another embodiment that the printing modules are on the opposite side of the container 490, i.e farther from the axis of rotation of the carousel than the clamped container. As a result, more space is gained for the individual printing modules and supply lines in the direction of rotation of the carousel, so that, for example, more printing modules can be arranged in each individual printing segment.
  • FIG 5 shows a further embodiment of a direct printing machine 500 according to the invention.
  • the ink tanks 502 and 503 are arranged concentrically and one above the other in relation to the axis of rotation R of the carousel.
  • refill connections are arranged on the outer periphery of the direct printing machine 500 . These refill connections can be arranged, for example, in the stationary part of the direct printing machine and can lead via a corresponding line and a rotary distributor to the ink tanks that are moved along with it.
  • the ink would be transported directly from the refill connections into the tanks 502 and 503 due to the negative pressure present according to the invention due to the higher pump capacity of the return pump compared to the feed pump.
  • the refill connections 520 and 530 are connected directly to the tanks 502 and 503 via the lines 521 and 531, it can be advantageous if a corresponding pump is arranged in the lines, the pumping direction of which runs in the direction of the tanks.
  • the illustrated embodiment shows two refill ports 520 and 530 co-located between the two printing stations 110 and 110'. It is of course also conceivable for more than one refill connection to be provided for one and the same ink tank, for example 502 or 503, in which case the corresponding refill connections can then be distributed uniformly around the circumference of the carousel of the direct printing machine 500, for example. Since such machines are usually not accessible from all sides, it can be ensured that at least one of the connections can be reached for refilling after only a small rotation (if at all) of the carousel when the direct printing machine is at a standstill.
  • the connections 520 and 521 are provided as couplings into which a hose or a cartridge with a suitable counterpart can be docked. In the simplest case, however, these are funnel-shaped connections into which the ink can be poured from above (not shown).
  • Figure 6a and 6b show further advantageous embodiments of the individual printing stations or printing segments.
  • a print module of a print segment is shown.
  • the printing module 111 includes a plurality of printing nozzles 611 that can print on a container 130 . If several pressure modules are used in a pressure segment of a pressure station, there is a risk that despite the negative pressure applied by the return pump, as in Figures 2a and 2b described, unintentionally when printing the container 130 ink drops or resulting mist on opposite or adjacent printing modules hit, for example by the wind at high speed rotation of the carousel.
  • shields 690 can be provided for each printing module, which can be moved in front of the relevant printing module 111 and in particular in front of the printing nozzles 611 when the printing module is not in operation.
  • the shielding 690 can be moved laterally from the printing module 111 to in front of the printing nozzles 611 (in particular in the horizontal direction) or the shielding 690 can be positioned above or below the printing module in the non-shielding state and then moved in front of the printing nozzles 611.
  • the latter embodiment offers the advantage that no space has to be kept free for the shielding in the printing plane, so that a number of printing modules can be arranged next to one another.
  • Figure 6b 14 shows an alternative embodiment, in which instead of providing a separate shield for each pressure module, the container is inserted into a shield 695.
  • this shielding can, for example, be designed as a cylinder and should be rotatable at least about an axis parallel to the longitudinal axis L of the container 130 .
  • the shield 695 includes an opening 696 that is at least large enough to allow ink jets from a print module 111' to fully penetrate the opening and apply a printed image to the container. For this purpose, when the printing module 111' is to print the container, the shield 695 is rotated so that the opening 696 points in the direction of the printing nozzles 611.
  • the shield 695 must be larger than the reservoir 130, this avoids the splattering of ink drops that might hit other print modules 111.
  • a UV light source placed in the same plane is shielded. This effect can be further supported by the fact that the printing module 111' is moved closer to the opening 690 and thus to the container surface during the printing process, so that the row of printing nozzles may even be located within the imaginary solid cylinder jacket of the shielding 695, which means that accidental splashing of Ink on other print modules can be completely or almost completely suppressed.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (15)

  1. Machine d'impression directe (100) pour l'impression sur des contenants (130) comme par exemple des bouteilles, comprenant un carrousel (101) avec un grand nombre de postes d'impression (110), qui sont en mesure d'accueillir un contenant et d'imprimer sur celui-ci, la machine comprenant également un système d'alimentation en encre (103), qui comprend au moins deux réservoirs d'encre (102, 103) et au moins une conduite d'alimentation (131-13n) susceptible d'amener de l'encre du réservoir d'encre (102) à au moins l'un des postes d'impression (110), et qui est agencé sur la machine d'impression directe (100) en étant en rotation avec le carrousel (101), et la machine étant réalisée exempte de distributeur rotatif d'encre, caractérisée en ce que les réservoirs d'encre (102, 103) sont agencés de manière concentrique et l'un au-dessus de l'autre par rapport à un axe de rotation du carrousel et en ce qu'il est prévu un réservoir stationnaire avec un raccord de branchement, qui ne peut être relié à la machine d'impression directe qu'à l'état de repos de la machine d'impression directe, le réservoir stationnaire pouvant être relié aux réservoirs d'encre (102, 103) par l'intermédiaire de deux raccords de recharge (520, 530) reliés aux réservoirs d'encre (102, 103), qui sont agencés à la périphérie du carrousel et entre deux postes d'impression voisins.
  2. Machine d'impression directe (100) selon la revendication 1, caractérisée en ce que chaque poste d'impression (110) comprend un segment d'impression (330), qui renferme au moins un module d'impression (331-334) et est relié de manière amovible au poste d'impression (110), une liaison du module d'impression (331-334) avec une conduite d'alimentation (311-314) étant établie dans l'état monté.
  3. Machine d'impression directe selon la revendication 2, caractérisée en ce que chaque poste d'impression (110) comprend un emplacement d'accueil de contenant, l'emplacement d'accueil de contenant et le segment d'impression (330) étant réalisés sous forme de pièces séparées ou sous la forme d'une seule pièce.
  4. Machine d'impression directe selon la revendication 2 ou 3, caractérisée en ce que le segment d'impression (330) comprend plusieurs modules d'impression (331-334), qui sont agencés de manière concentrique autour de l'axe longitudinal d'un contenant se trouvant dans le poste d'impression (110).
  5. Machine d'impression directe selon l'une des revendications 2 à 4, caractérisée en ce qu'à chaque module d'impression (111) est associé un écran de protection (690), qui peut être déplacé entre une position de repos et une position de protection dans laquelle l'écran de protection (690) protège les buses d'impression (611) du module d'impression (111).
  6. Machine d'impression directe selon l'une des revendications 1 à 5, caractérisée en ce que le système d'alimentation en encre comprend, en outre, au moins une pompe d'alimentation (281) pouvant être régulée et destinée à pomper de l'encre du réservoir d'encre (102) vers les postes d'impression, et au moins une pompe de retour (282) pour pomper de l'encre des postes d'impression vers le réservoir d'encre (102).
  7. Machine d'impression directe selon l'une des revendications 1 à 6, caractérisée en ce que la conduite d'alimentation comprend au moins une conduite principale (205) pour le transport d'encre en provenance du réservoir d'encre (102), qui s'étend au moins le long d'une partie de la périphérie du carrousel (101), une ou plusieurs conduites auxiliaires (251-258) menant de la conduite principale (205) aux postes d'impression (251-258) et au moins une conduite d'évacuation menant respectivement de chacun des postes d'impression à la conduite principale (205), de l'encre pouvant être extraite du réservoir d'encre (102), par l'intermédiaire d'un premier raccord de branchement de la conduite principale (205) au réservoir d'encre (102), et pouvant être introduite dans le réservoir d'encre (102) par l'intermédiaire d'un deuxième raccord de branchement de la conduite principale (205) .
  8. Machine d'impression directe selon l'une des revendications 1 à 7, caractérisée en ce que sont prévus plusieurs réservoirs d'encre, des conduites d'alimentation séparées étant associées à chaque réservoir d'encre, et les réservoirs d'encre étant agencés en étant répartis de manière concentrique autour d'un axe de rotation du carrousel, ou parallèlement à l'axe de rotation du carrousel, ou bien de manière non concentrique.
  9. Machine d'impression directe selon l'une des revendications 1 à 8, caractérisée en ce que le système d'alimentation en encre est agencé dans le carrousel.
  10. Machine d'impression directe selon l'une des revendications 1 à 9, caractérisée en ce que le raccord de recharge (520, 530) est agencé entre deux postes d'impression voisins (110, 110').
  11. Procédé pour l'impression sur des contenants comme par exemple des bouteilles, au moyen d'une machine d'impression directe (100), les contenants étant accueillis et imprimés par des postes d'impression (110) sur un carrousel (101) en rotation, un système d'alimentation en encre (103), qui est en rotation avec le carrousel, amenant de l'encre en provenance de deux réservoirs d'encre (102) à au moins l'un des postes d'impression (110) par l'intermédiaire d'une conduite d'alimentation (131-13n), la machine d'impression directe étant une machine d'impression directe exempte de distributeur rotatif d'encre, caractérisé en ce que les réservoirs d'encre (102, 103) sont agencés de manière concentrique et l'un au-dessus de l'autre par rapport à l'axe de rotation du carrousel et en ce qu'il est prévu un réservoir stationnaire avec un raccord de branchement, qui n'est relié à la machine d'impression directe qu'à l'état de repos de la machine d'impression directe, le réservoir stationnaire étant relié au réservoir d'encre (102) par l'intermédiaire de deux raccords de recharge (520, 530) reliés aux réservoirs d'encre (102, 103) et agencés à la périphérie du carrousel et entre deux postes d'impression voisins, en vue de la recharge des réservoirs d'encre (102, 103).
  12. Procédé selon la revendication 11, caractérisé en ce que par l'intermédiaire d'une pompe d'alimentation (281) pouvant être régulée, de l'encre du réservoir d'encre (102) est pompée dans la conduite d'alimentation, et de l'encre est pompée en retour dans le réservoir d'encre par l'intermédiaire d'une pompe de retour (282), la puissance de pompage de la pompe de retour étant à tout moment supérieure à la puissance de pompage de la pompe d'alimentation, de sorte qu'une dépression règne au niveau des buses d'impression du poste d'impression.
  13. Procédé selon la revendication 12, caractérisé en ce que la puissance de pompage de la pompe d'alimentation est commandée en fonction du niveau de remplissage du réservoir d'encre (102) et/ou en fonction de la vitesse périphérique du carrousel (101).
  14. Procédé selon l'une des revendications 11 à 13, caractérisé en ce que de l'encre peut être amenée au réservoir d'encre (502, 503) par l'intermédiaire du raccord de recharge (520, 530), le raccord de recharge (520, 530) étant agencé entre deux postes d'impression voisins (110, 110'), et lorsqu'une recharge du réservoir d'encre s'avère nécessaire, le carrousel est amené à l'arrêt dans une position dans laquelle le raccord de recharge est accessible de l'extérieur de la machine d'impression directe.
  15. Procédé selon l'une des revendications 11 à 14, caractérisé en ce que de l'encre en provenance du réservoir d'encre (102) est transportée le long d'une conduite principale (205), et amenée à des postes d'impression (251-258) individuels par l'intermédiaire de conduites auxiliaires (251-258), et est menée des postes d'impression à la conduite principale par l'intermédiaire de conduites d'évacuation, l'encre étant menée, par l'intermédiaire d'un premier raccord de branchement de la conduite principale (205), du réservoir d'encre (102) dans la conduite principale (205), et, par l'intermédiaire d'un deuxième raccord de branchement de la conduite principale (205), de cette conduite principale (205) au réservoir d'encre (102).
EP15172843.3A 2014-07-25 2015-06-19 Machine d'impression directe dotée de système d'alimentation en encre Not-in-force EP2977212B2 (fr)

Applications Claiming Priority (1)

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DE102014110520.6A DE102014110520A1 (de) 2014-07-25 2014-07-25 Direktdruckmaschine mit Tintenversorgungssystem

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EP2977212A2 EP2977212A2 (fr) 2016-01-27
EP2977212A3 EP2977212A3 (fr) 2016-07-13
EP2977212B1 EP2977212B1 (fr) 2019-01-16
EP2977212B2 true EP2977212B2 (fr) 2023-02-22

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CN106004085A (zh) * 2016-07-04 2016-10-12 迈得医疗工业设备股份有限公司 喷码装置和喷码方法
DE102016217882B4 (de) 2016-09-19 2024-04-04 Kba-Metronic Gmbh Verfahren zum Betreiben eines Druckaggregats
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
DE102016226166A1 (de) * 2016-12-23 2018-06-28 Krones Ag Verfahren und Direktdruckmaschine zur Bedruckung von Behältern aus unterschiedlichen Materialtypen im Direktdruck
DE102017215475A1 (de) * 2017-09-04 2019-03-07 Krones Ag Direktdruckmaschine und -verfahren zur Bedruckung von Behältern mit einem Direktdruck
DE102018109083A1 (de) * 2018-04-17 2019-10-17 Khs Gmbh Vorrichtung zum Direktbedrucken von Behältern
CN109501476B (zh) * 2018-12-21 2020-01-17 苏州斯莱克精密设备股份有限公司 一种数码印罐机打印精度控制方法以及数码印罐机

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US7845784B2 (en) * 2006-12-28 2010-12-07 Kabushiki Kaisha Toshiba Ink supplying mechanism and ink supplying method
DE102009013477B4 (de) * 2009-03-19 2012-01-12 Khs Gmbh Druckvorrichtung zum Bedrucken von Flaschen oder dergleichen Behältern
DE102009020702B4 (de) 2009-05-11 2011-09-15 Khs Gmbh Drucksystem zum Bedrucken von Flaschen oder dergleichen Behältern sowie Druckvorrichtung oder -maschine mit einem solchen Drucksystem
DE102009058219A1 (de) * 2009-12-15 2011-06-16 Till, Volker, Dipl.-Ing. Anlage zum Bedrucken von Behältern
DE102010020958B4 (de) 2010-05-19 2012-05-03 Khs Gmbh Vorrichtung sowie Verfahren zum Bedrucken, insbesondere zum mehrfarbigen Bedrucken von Behältern
DE102010034780A1 (de) 2010-08-18 2012-02-23 Volker Till Vorrichtung und Verfahren zum Bedrucken von Behältern
CN103502100B (zh) * 2011-04-25 2015-10-14 昭和铝罐株式会社 图像形成装置及形成有图像的罐体的制造方法
DE102012005926A1 (de) * 2012-03-26 2013-09-26 Khs Gmbh Verfahren sowie Vorrichtung zum Behandeln von Packmitteln
DE102013208065A1 (de) 2013-05-02 2013-07-04 Krones Ag Rundläufermaschine zur Bedruckung von Behältern
DE102013217679A1 (de) 2013-09-04 2015-03-05 Heidelberger Druckmaschinen Ag Druckmaschine für den Tintenstrahldruck auf Behälter
DE102013110108A1 (de) 2013-09-13 2015-03-19 Khs Gmbh Drucksystem zum Bedrucken von Flaschen oder dergleichen Behältern sowie Druckvorrichtung oder –maschine mit einem solchen Drucksystem

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EP2977212A3 (fr) 2016-07-13
EP2977212A2 (fr) 2016-01-27
DE102014110520A1 (de) 2016-01-28
EP2977212B1 (fr) 2019-01-16
CN105291597A (zh) 2016-02-03

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