EP2845738B1 - Dispositif d'impression de récipients - Google Patents

Dispositif d'impression de récipients Download PDF

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Publication number
EP2845738B1
EP2845738B1 EP14178474.4A EP14178474A EP2845738B1 EP 2845738 B1 EP2845738 B1 EP 2845738B1 EP 14178474 A EP14178474 A EP 14178474A EP 2845738 B1 EP2845738 B1 EP 2845738B1
Authority
EP
European Patent Office
Prior art keywords
container
rotor
printing
enclosure
curing station
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.)
Active
Application number
EP14178474.4A
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German (de)
English (en)
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EP2845738A1 (fr
Inventor
Frank Winzinger
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.)
Krones AG
Original Assignee
Krones AG
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Filing date
Publication date
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Publication of EP2845738A1 publication Critical patent/EP2845738A1/fr
Application granted granted Critical
Publication of EP2845738B1 publication Critical patent/EP2845738B1/fr
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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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • 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 relates to a device for printing on containers, in particular of bottles or cans, with a preferably multi-colored print image and for subsequent fixing of the printed image.
  • Containers for products are imprinted to identify the product and / or for a high quality product presentation.
  • the printing can be applied either directly to a printing section of a container outer surface (direct printing) or as additional pressure on a label.
  • the ink or ink is applied with one or more printheads directly on the container outer surface or the label.
  • the printed image may have, for example, characters, logos, patterns and color gradients.
  • the containers to be printed are usually conveyed with a transport device, for example with a rotor in the manner of a carousel and thereby printed by the printheads with light-curing inks or inks.
  • the printed image can continue to be monochrome or multicolored.
  • multicolor print images separate print heads are frequently provided per printing ink, which apply the respective printing ink to the printing section according to the inkjet method.
  • each individual ink fixation for example by drying by means of hot air, infrared radiation, UV radiation, microwaves, electron beams and the like, take place.
  • the multi-color print image can be generated with one or more printheads according to the principle of "wet in wet printing" in a single printing process and then fixed.
  • the device described below uses, in particular, irradiation with UV radiation or electron beams for fixing the printed image, but is not limited to the use of UV radiation or electron beams.
  • UV radiation When UV radiation is used, the initially liquid ink or ink on the containers becomes stationary with one on the rotor arranged curing station / curing device irradiated with UV light and thereby fixed.
  • the device may comprise a plurality of curing stations, which cure the ink or ink in each case after the printing of a color.
  • a single curing station as in the above-mentioned "wet in wet printing" is arranged in the transport direction to all printheads and so all inks or inks of the printed image are cured simultaneously.
  • FR2782376 A1 shows an apparatus for printing on containers, wherein leakage of UV radiation should be avoided from the enclosing box of the curing station.
  • the object of the present invention to provide a device for printing on containers, which shields directly and indirectly emerging scattered radiation during the curing process and thereby overcomes the disadvantages mentioned above.
  • the device should effectively and reliably shield the radiation used without impeding the flow of containers through the printing device.
  • the apparatus comprises a printing station having at least one printhead disposed in the periphery of the rotor such that the containers are transported past the printing station by the rotor. It is also conceivable to arrange the print heads on the rotor co-rotating.
  • the container receptacle and the protective device are designed in particular such that the housing is formed only after the last in circulation before the curing station arranged printing station, or after the last position in which is printed, and remains only in the curing station.
  • the housing formed immediately after the curing process, ie before any eventual, the curing station next in circulation next printing station by relative movement of the container receptacle and the part of the protective device is dissolved again.
  • the formed enclosure thus serves exclusively as a shielding of the radiation used during the curing process.
  • the region of the curing station can thus be defined as a partial region of the angular region of the rotor or of the section of the transport path of the containers, which is located between the closest printing stations before and after the curing station (or if no further printing station is present, until the downstream discharge conveyor). extends and includes at least the curing station. Accordingly, the at least one entrained container is in the irradiation by the curing station in a substantially closed chamber, which is formed by the part of the protective device, the container receptacle and / or the curing station itself.
  • the curing station is located in a part of the peripheral region of the conveyor, which is arranged in the direction of rotation between 60 ° and 5 °, preferably between 40 ° and 10 ° before a dispensing position of the container from the rotor to the discharge conveyor.
  • a complete revolution of the rotor is 360 °.
  • the relative movement of the container receptacle and the protective device may take place along the circumference of the rotor and / or along an axial direction of the rotor and / or along a radial direction of the rotor.
  • the formed enclosure can consist of several parts.
  • the housing formed may have an "inner” part located radially inwards with respect to the rotor axis, an "outer” part located radially outside with respect to the rotor axis, a "lower” part located at the bottom with respect to a footprint of the printing device, with respect to the footprint top side "upper” part and / or one or more along the rotor circumference laterally located side elements.
  • the individual parts can each be formed as part of the protective device, the curing station and / or the container receptacle.
  • the individual parts may be formed by means of the dimensions of the containers to be printed, the container receptacles and / or the curing station suitably sized and shaped sheets, metal or plastic elements, which, for example, channel-shaped, U-shaped, box-shaped, plate-shaped, angular, wavy, etc. may be formed.
  • the special shape of the individual parts is freely adaptable to the requirements of the printing device, as long as the formed housing prevents a direct and optionally indirect exit of the radiation emitted by the curing station.
  • the prevention of direct radiation leakage may mean that a beam emanating from the curing station and / or the container outer surface is reflected or scattered at least once at the enclosure before exiting the chamber formed by the enclosure.
  • the enclosure can not be made airtight. For radiation protection to the outside, however, seals may be present along the edges of the individual elements of the enclosure.
  • the relative movement of the container receptacle and the part of the protective device can take place by means of a drive of the rotor, a separately formed drive and / or a correspondingly formed control cam in cooperation with the drive of the rotor.
  • the drives can in each case be designed as electric motors, in particular as stepper motors or servomotors, which can be controlled by means of a control and / or regulating unit of the printing device.
  • the printing device can be used as part of a container treatment machine in a processing plant for beverages, cosmetics or hygiene products.
  • the printing device may be arranged downstream of a filling installation for filling a product into the containers.
  • the printing device can also be arranged directly downstream of a stretch blow molding machine for PET bottles.
  • the containers may be intended to contain drinks, cosmetics, toiletries, pastes, chemical, biological and / or pharmaceutical products.
  • the containers may be plastic bottles, glass bottles, cans and / or tubes.
  • the containers may in particular be PET bottles.
  • the bottles are empty when printing and curing the ink. This facilitates handling when printing and allows more accurate printing, as imbalance of the container when turning in front of the printhead cause less large moments on the images than would be the case with filled bottles.
  • the printing device comprises a transport device, which is designed as a rotor, in particular in the form of a carousel for containers.
  • the rotor is thereby rotated about its axis of rotation by means of a drive which can be controlled by means of a control and / or regulating unit, so that the plurality of container receptacles of the rotor circulate on a circular path around the axis of rotation.
  • the rotation of the rotor takes place in particular continuously, so greater performance can be achieved.
  • the plurality of container receptacles may be arranged along regular angular segments along the circumference of the carousel.
  • the container receptacles can be designed, for example, as an optionally driven with a direct drive, aligned parallel to the axis of rotation of the rotor, individual axes of rotation rotatable turntable and additionally optionally include a centering device.
  • the turntable and the centering device can be designed to clamp the container to be carried along by the respective container receptacle on the container bottom or on the container mouth.
  • the container receptacles may in particular have a container receiving area with a receiving device, in which the respective received container can be clamped.
  • the containers can be transported by slaves through the printing device.
  • the recordings have means for recording of the slaves. It is possible that a container is clamped so only with its mouth in the slave that he needs no further support in the ground area.
  • turntables in the rotor can be dispensed with in this case.
  • the rotary drive then sits in the means for receiving the slaves.
  • the container receptacles are adapted to receive the containers from the at least one feed conveyor, for example in the form of an infeed star, along the circumference of the carousel and after treatment by the printing station (s) and / or curing station (s) on the at least one discharge conveyor , for example, in the form of an outlet star deliver.
  • the at least one printing station and the at least one curing station are arranged in the periphery of the rotor.
  • a plurality of printing stations and / or curing stations can be arranged with respect to the intervals of successive container receptacles along the circumference of the rotor, that several containers are treated simultaneously by different printing stations and / or curing stations, in particular simultaneously.
  • the at least one printing station is arranged in such a way in the periphery of the rotor that the containers are transported past the printing station due to the rotational movement of the rotor.
  • the containers to be printed are positioned by clocked rotation of the rotor in front of the print head of the respective printing station and printed there by rotation of the container recording by means of a direct drive area or while passing the container on Print head of the respective printing station printed on the surface due to the continuous rotational movement.
  • a rotation of the container receptacle by means of the direct drive about its axis of rotation can additionally take place.
  • the clocked or continuous rotational movement and the rotation of the container receptacles can be controlled and / or regulated by means of the control and / or regulating unit.
  • the at least one printing station and the at least one curing station may be arranged stationarily in the periphery of the rotor.
  • a stationary arrangement here means that the printing station or the curing station does not move circumferentially with the rotor.
  • the printing station and / or the curing station with respect to the axial and / or the radial direction of the rotor can be designed to be movable and / or tiltable.
  • the printing station and / or the curing station can be stationary, ie immobile relative to a footprint of the printing device, wherein the printing station and / or the curing station can be in particular fixedly connected to the printing device.
  • a footprint can serve in particular the bottom of a room / a hall.
  • the printing device may comprise a plurality of printing stations, in particular those for applying a respective printing ink, which may be arranged successively along the circumference of the rotor.
  • each printing station in the direction of rotation of the container receptacles downstream of each one Aushärtestation for fixing the currently printed ink or ink or after the last in the direction of rotation last printing station for printing a whole section of the container outer surface a single curing station for fixing the generated print image can be provided. It can also be used after each print with a printhead Intermediate pinning be carried out and done at the end of a final curing in the curing station.
  • the at least one printing station in each case comprises at least one print head, in particular a direct print head.
  • the at least one print head has a multiplicity of printing nozzles or printing openings for discharging the printing ink or ink, which are arranged, for example, in at least one row and are electrically controllable individually for discharging the printing ink or ink and for this purpose at the respective nozzle opening a pressure-generating element , For example, in the form of an electrode or a piezoelectric element having.
  • the print head can furthermore be made tiltable within a predetermined angular range with respect to a first axis (longitudinal axis) perpendicular to the exit direction of the ink or ink and / or with respect to a second axis (transverse axis) perpendicular to the exit direction of the ink or ink respective tilt angle can be adjusted by means of a control and / or regulating unit so that the exiting ink jet impinges as perpendicular as possible to each surface element of the container outer surface to be printed.
  • the ink or ink applied by means of the printing station can in particular be light-curing printing ink.
  • Light-curing printing ink in this case means that a chemical reaction is triggered by light radiation, in particular in the UV range, in the printing ink, by which the liquid printing ink is converted into a substantially solid or pasty phase.
  • the printing ink can be polymerized, for example, optionally radicals are formed in the printing ink.
  • Printing ink may mean here that it is an ink, a paint, a varnish or the like.
  • the protection device may be completely stationary, completely synchronous with a container receptacle or partially stationary and partially synchronously encircling (see the further developments below).
  • the curing station can have at least one radiation source for emitting UV radiation or electrons.
  • UV radiation in a wavelength range of 200 nm to 480 nm can be used to cure light-curing printing ink.
  • the radiation source may be a medium pressure mercury vapor, high pressure, or high pressure lamp.
  • the radiation source may be a gas discharge lamp, an arc lamp, an LED lamp or a UV light emitting diode.
  • Extraction may be provided at the curing station to prevent ozone leakage into the machine or the environment.
  • the ozone is preferably decomposed by means of a catalyst after aspiration.
  • In the suction fan is provided to generate a small negative pressure in the enclosure. If all elements of the housing which are not co-rotating with the rotor are movable or deliverable, a flexible hose is particularly suitable for connection to the opening.
  • the container receptacle and the protective device can be designed such that the enclosure formed by the container receptacle and the Schutzeichcardi encloses at least the radiation source in addition to the entrained container.
  • both the entrained container and the radiation source of the curing station are in a chamber formed by the housing during the fixing process.
  • At least a part of the protective device can be arranged fixedly in the region of the curing station.
  • the at least one part may be mechanically connected to a stationary part of the printing device.
  • At least one inner part of the housing formed with respect to a radial direction of the rotor can be designed as a stationary part of the protective device in the region of the curing station.
  • the fixed inner part may, as mentioned above, be mechanically connected to a fixed part of the printing device and in particular be plate-shaped, U-shaped, semi-cylindrical or box-shaped.
  • the inner part forms that part of the housing which faces the radiation source of the curing station arranged in the periphery of the rotor and thus causes radiation which misses the container to be effectively shielded.
  • An embodiment of the inner part of the enclosure as a fixed element is mechanically particularly easy to implement and also inexpensive, since per curing station only an inner part of the enclosure must be provided.
  • At least one with respect to the radial direction of the rotor inner part of the enclosure formed may be formed as a synchronously with the container receiving part of the protective device.
  • the inner part for this purpose can be mechanically connected to the rotor, for example with a shaft or a mechanical axis of the rotor.
  • a separate inner part of the protective device is generally provided for each container receptacle. The relative movement, by which the housing is formed in the region of the curing station, in this case either with respect to a further part of the protective device in Area of the curing station in the direction of rotation and / or take place along the axial direction of the rotor.
  • Synchronous with the container receptacles encircling inner parts of the protective device can advantageously also serve for shielding of printing ink or printing ink containing aerosol in the area of the printing stations.
  • the inner parts may be designed to be exchangeable for cleaning purposes.
  • an outer part of the housing formed with respect to the radial direction of the rotor can be formed as a fixed part of the protective device in the region of the curing station, wherein the protective device is arranged along an axial direction of the rotor offset from the printing station, and wherein the container receptacle is designed to be movable in the axial direction in the region of the curing station.
  • the outer part of the housing formed may be formed, for example, as a rear wall and / or side walls (with respect to the rotor) of the curing station.
  • the protective device ie both its running or stationary inner and its fixed outer part, along the axial direction of the rotor offset from the printing station.
  • the curing station along the axial direction of the rotor can be arranged offset to the printing station.
  • the container receptacle is in the field of Aushärtestation, for example by attachment to a parallel to the axis of rotation aligned, adjustable bearing, z. B. a rod, designed to be movable in the axial direction.
  • the respective container receptacle is moved with the entrained container in the feed to the curing station from the level of the upstream printing station in the plane of the curing station in the axial direction and then optionally returned to a plane of a downstream printing station.
  • the container is retracted for fixing in the housing formed.
  • the protective device can have corresponding passage openings for the container and / or the container receptacle.
  • the container receptacle can also form the lower and / or upper part of the housing and thus prevent leakage of radiation down and / or above. Layers here are always planes to understand on which the axis of rotation of the rotor is vertical.
  • the printing device may further comprise a control cam, which is designed such that the container receptacle is moved in the region of the curing station via the control cam in the axial direction such that the entrained container is retracted into the formed housing.
  • a control cam can be provided, for example, in the lower region of the rotor along the circumference of the rotor, wherein the axially movable bearing, on which the container receptacle is arranged, rolls over a roller or a sliding element during the rotational movement of the rotor on the control cam or slides, so that the profile of the cam in cooperation with the drive of the rotor in a simple manner causes the axial movement of the container receptacle in the region of the curing station.
  • the bearing of the container receptacle may have a separate drive, e.g. B. in the form of a driven linear axis, which drives the container receiving controlled by a control and / or regulating unit in the housing formed.
  • the control and / or regulating unit can also be designed so that certain containers should not be retracted into the housing formed, for example, since a fixing should take place later or is not necessary. This allows a single printing device with a variety of Aushärtestationen both for fixing each individual ink as well as for the "wet in wet printing" flexible use.
  • both the inner part and the outer part of the housing formed are formed as fixed parts in the region of the curing station, the fixed parts of the protective device and the container receptacle are thus solely by relatively moving the container receptacle along the axial direction of the rotor in Brought effect.
  • the printing device further comprises a drive and / or a control curve, by which and / or which the outer part of the housing for forming the housing in the region of the curing station can be pivoted and / or moved.
  • the entire curing station that is to say including the radiation source and the outer part of the housing, can be designed to be pivotable and / or movable in the radial and / or axial direction of the rotor.
  • a pivoting can in particular take place about an axis arranged tangentially to the circumference of the rotor.
  • the rotor and / or the respective container receptacle have a control cam which cooperates with a part of the pivoting device such that the outer part of the housing and optionally the curing station is pivoted by moving the respective container receptacle in the region of the curing station in a working position and by Move the respective container receptacle out of the range of the curing station is pivoted into a waiting position.
  • the pivotable part of the enclosure together with the container receptacle and / or other parts of the protection device and / or the curing station forms the enclosure for shielding direct and indirect scattered radiation during the curing process.
  • the pivoting can take place by means of a separate drive and a control and / or regulating unit which controls and / or regulates the drive in dependence on a relative position of the respective container receptacle to the curing station.
  • a separate drive and a control and / or regulating unit which controls and / or regulates the drive in dependence on a relative position of the respective container receptacle to the curing station.
  • a method of the outer part of the housing in the radial and / or axial direction of the rotor can be realized for example by means of a driven by a controllable drive linear axis.
  • a combination of several movements is conceivable to fold over the outer part and optionally the curing station via a container in the region of the curing station, lower, zoom in from the side or the like.
  • the radial direction of the rotor inner part of the housing formed together with a respect to the radial direction outer part of the housing formed and at least one connecting the inner and outer part of the side member formed housing as a synchronous with the container receptacle be formed circumferential part of the protective device, wherein the synchronously rotating part of the protective device is designed to be movable along an axial direction of the rotor.
  • the inner and outer part of the at least one side member fixed mechanically be connected to each other and together the jacket of the housing formed, z. B. in the form of an upwardly and downwardly open cylinder.
  • the part of the protective device By moving the part of the protective device along the axial direction of the rotor that rotates synchronously with the respective container receptacle, the part of the protective device can be moved relative to the container receptacle so that it closes the peripheral part upwards and / or downwards.
  • Side element means here and below that the respective element is arranged substantially on the side facing the direction of movement or averted side of the housing formed.
  • the printing apparatus may further comprise a drive and / or a control curve, by which and / or which of the synchronously rotating part of the protective device for forming the housing in the region of the curing station from a along the axial direction relative to the printing station offset position in the direction the container receptacle is moved.
  • a rest position is in accordance with this development so synchronous circumferential part of the protective device arranged in a plane axially offset to the plane of the printing station, from where it is only to carry out the curing process in the plane of the printing station, so the level of the container receptacle, procedure, generally lowered, is.
  • the mobility of the part of the protective device can be implemented analogously to the above-described movability of the container receptacle by means of a suitable bearing, a correspondingly shaped control cam and / or a separate, controllable drive.
  • the protective device may comprise at least one movable side element as part of the housing formed and a closing device which is designed such that the movable side element is opened for retracting a container into the housing and closed after retraction.
  • the at least one movable side element may, for example, be fastened with one or more hinges to one of the above-described inner or outer parts of the housing formed and opened by means of the closing device for retracting or opening the container and closed for the curing process.
  • the closing device can be formed mechanically and, for example, be automatically actuated by the movement of the container carrying leading container receptacle in the region of the curing station.
  • the closing device may also be formed electrically or electromagnetically and be actuated electronically by means of a control and / or regulating unit.
  • the containers can be particularly elegant retract into the housing formed. This is particularly advantageous for fixed parts of the protective device.
  • the protective device can be designed such that the housing formed can surround more than one container.
  • the housing formed can be made spacious enough that the container carrying the printed container receptacle along a predetermined angular range of the rotor can move within the chamber formed by the housing.
  • the required angle range is essentially predetermined by the requirements of the at least one printing station and the printing process used.
  • the container receptacle is designed such that it at least partially closes the housing formed in the region of the curing station in an axial direction of the rotor.
  • a turntable container receptacle serve as a conclusion down.
  • the dimensions and shapes of the corresponding elements of the container receptacle can be adapted to the dimensions and shapes of the remaining parts of the protective device.
  • the elements of the container receptacle may overlap with the remaining parts of the protective device after formation of the housing.
  • the housing formed can be designed such that it encloses the entrained container and the radiation source substantially light-tight.
  • substantially light-tight means that both the direct and indirect leakage due to scattering or reflection of a jet emanating from the curing station and / or the container outer surface are prevented from the housing.
  • the housing forming parts of the protective device, the container receptacle and / or the curing station can be shaped so that they form-fit engage in forming the enclosure and / or form an overlap.
  • the elements of the housing can have a surface coating on the inner side with respect to the chamber formed, which absorbs the radiation used to at least 70%, preferably at least 90%. The surface coating may be substantially absorbent to the radiation used.
  • the inside of the housing formed can be formed with a structured surface, optionally with corrugations.
  • the rotor is set up to cycle both cyclically and continuously.
  • oval or flat containers are passed past the printheads in a continuous pass and round containers are stopped in a clocking operation in front of the respective printheads and rotated in front of them about their longitudinal axis.
  • the control for the movable parts of the housing may be designed to control these elements differently depending on the mode of operation of the machine, so that, for example, the moving parts are delivered faster in a continuous run than in a clock mode.
  • the housing can exchange between the two operating modes.
  • the elements of the housing to be changed are detachably attached to the rotor or to the stationary parts of the machine, in particular by means of quick-release fasteners.
  • a solubility of the housing can be provided.
  • the print heads co-rotating on the rotor.
  • the enclosure may in this case comprise an additional element which shields exactly the running printhead.
  • the follower print head is located on the rotor radially inward of the axis of rotation in comparison to the container.
  • the additional element could in this case be introduced between the print head and the container to be printed.
  • the container in an axial direction of the follower printhead on reaching the curing station removed and learns in a different plane its radiation treatment.
  • a non-rotatable on the rotor element between the container or the curing device and the print head can also be retracted.
  • the housing is formed only in the region of the curing station, problems can be avoided, for example, due to possible collisions of the container with the housing when receiving the container from a feed conveyor or when dispensing the container to a discharge conveyor. As a result, overall higher rotational speeds of the rotor and thus higher throughputs of the printing device are possible.
  • the housing element is moved shortly after the contact of the container at the position of the curing device in a working position in which the element together with another element of the enclosure shields the container from the environment.
  • the other element is mounted in particular co-rotating on the rotor.
  • a conversion of the device even with changing dimensions (regardless of whether constant shape of the cross-section or cycle operation / continuous operation) of containers may be necessary.
  • parts of the curing device or the housing and / or the radiation source are then adjusted (position or intensity) and / or replaced.
  • the distance of the radiation source is adapted to the container - this can be done via a relative movement to the housing elements or together with the adjustment of a housing element relative to another housing element.
  • the intensity of the extraction of ozone can be adjusted, especially if the intensity of the radiation is changed.
  • the adjustment of the radiation source or the housing element to which the radiation source is attached can also be done automatically via a motor.
  • the distance setting is particularly necessary when changing from oval or rectangular to round bottles.
  • round bottles where the distance between the drying of the ink on a bottle can be kept constant, it would be possible to cure the ink to non-round bottles, depending on the shape of the container, on rotation of the container, in the direction of the To adjust the axis of rotation of the rotor and back away from it in order to maintain a constant distance constantly.
  • a container treatment apparatus for printing on containers 110 can be seen in a plan view.
  • the exemplary embodiment shown here with a carousel 100 as a transport system often occurs in container treatment devices of the beverage industry, but also in the cosmetics and hygiene sector.
  • a single-lane container stream 140 is provided by a Einteilschnecke (not shown) with a predetermined pitch and then fed to an inlet star 150, which receives the container 110 individually and passes on to the container receptacles of the carousel 100.
  • the containers Prior to transfer to the infeed star 150, the containers may pass through a corona tunnel where they may be statically charged to achieve an improved or sharper print image.
  • the containers are shown in this exemplary representation for the sake of simplicity with a circular cross-section, z. B. as bottles or bottle-like containers. It is understood, however, that the shape of the container receptacles can be adapted in a simple manner not rotationally symmetrical containers.
  • container receptacles can be used, which can generally be used for containers of various shapes and sizes by interchangeable or adaptable receptacles for containers with certain surface shapes are arranged on or on the container receptacles.
  • the container receptacles 130 are arranged at uniform angular intervals about the axis of rotation 160 of the rotor of the carousel 100 offset on the carousel. In this case, each container receptacle is preferably rotatable about its respective axis of rotation. An extension of the rotor axis 160 intersects the center of the earth. The containers are thus transported in a horizontal plane.
  • the container receivers 130 are guided past a plurality of printing stations 120a-e located at the periphery of the carousel.
  • a printing section is printed on the respective container outer surface as the containers carried by the container receptacles pass by.
  • the printing stations 120a-e may use the same printing section with inks of different colors, e.g. As white, yellow, magenta, cyan and black, print or print different sections with the or the respective colors.
  • the last printing station 120e may apply a seal or cover layer to protect the print image from external influences.
  • a curing station 125 for fixing the printed image is arranged on the periphery of the carousel.
  • the fixation can be done depending on the ink or ink by means of UV radiation, electron beams, microwaves or the like.
  • the printing stations 120a-e and the curing station 125 are formed in this representation fixed at the periphery of the carousel. there the curing station can be arranged in a different plane than the printing stations.
  • several curing stations, z. B. each in the wake to a printing station be arranged on the periphery of the rotor 100.
  • the container recordings at a predetermined speed at the respective printing stations 120a -e are passed.
  • the rotor 100 may be clocked or continuously rotated, depending on which printing method is used.
  • the angular distances between adjacent container receptacles 130 can be adapted to the arrangement of the printing stations 120a-e and the curing station 125 such that a plurality of containers can always be treated simultaneously in different treatment phases.
  • the rotor 100 is operated cyclically.
  • the bottles 110 remain in front of the respective print heads 120a-e and rotate - driven by their recordings - in front of the print head by 360 °. In this case, it is then possible to continue to rotate the rotor by two pitches per cycle in order to utilize the additional print head set. If five printheads are used per set, the order may be the same in order a to e for the second set.
  • the order of the second printhead set must be changed so that each color can be applied to each bottle, for example in the following order : b, a, d, c. It would then be desirable that in the Aushärtestation 125 two bottles can be included or there is an additional Aushärtestation next to 125. As an alternative to this procedure, so many bottles can be produced in one cycle be how printheads or Aushärtepositionen are present. In that case, the order of the printheads 120a-e of the sets may be the same.
  • the containers 110 are preferably transferred individually to an outlet star 155, which in turn forwards them to an outlet flow 145.
  • the containers are in an enclosure during the curing process which may be formed in different ways by relative movement of the respective container receptacle 130 and at least a portion of the enclosure forming guard (see below).
  • the enclosure is formed only for the curing process and canceled after completion of the curing process.
  • FIG. 2 schematically illustrates an enclosure according to the present invention with reference to a first exemplary embodiment.
  • the illustrated development has a stationary, along the axial direction of the rotor 100 relative to the plane of the printing station 120 offset arranged housing.
  • FIG. 2 shows a cross section along the line AA (as indicated at the top right) through the rotor of FIG. 1 , where the small circles represent symbolically the inlet and outlet stars 150, 155.
  • the housing 225 shown by way of example comprises a stationary outer part 275 of the protective device and, due to the cross section, only partially shown, in the circumferential direction of the rotor front and rear, movable side members 270, which by means of a closing device (not shown) for retracting or extending the container 110 is opened and closed to fix the printed image.
  • a closing device for retracting or extending the container 110 is opened and closed to fix the printed image.
  • the sidewalls are closed in a circular motion around the container. In the sectional view hatched therefore only the inner part of the side walls 270.
  • the side walls can also be moved linearly - seen from above then form the two side walls 270 with the stationary element 275 a triangle.
  • the outer part 275 of the protective device simultaneously forms the rear wall and optionally the side walls or the inner wall of the curing station 125.
  • a radiation source 226, in particular for emitting UV radiation or electron beams is provided , which is enclosed by the housing formed 225.
  • the stationary housing 225 has a passage opening 280 for the container 110 and optionally for a turntable 130 of the container receptacle, which can be shaped and dimensioned so that the turntable 130 of the container receptacle after retraction of the container 110 formed Enclosure 225 closes down.
  • the turntable 130 may be dimensioned so that it protrudes beyond the shell of the housing 225 formed by the inner part 270, the outer part 275 and the side elements and thereby effectively prevents radiation from escaping downwards.
  • the turntable is part of the enclosure, so to speak. Below refers here and below on a footprint 165, z. B. a bottom on which the rotor 100 of the printing device is.
  • the rotor 100 schematically shown here includes a direct drive not provided with positional markers (magnets are indicated with white boxes directly to the right and left of the shaft, the stator provided with coils with the large white box to the right of the shaft) and retainers in FIG a lower and an upper level. In this case, the rotor 100 rotates about the rotation axis 160.
  • the container receptacles in the non-limiting embodiment shown each comprise a turntable 130 and a centering device 135 for clamping the container bottom or the container mouth when receiving the container 110 from an inlet star 150.
  • the centering device 135 may, in particular for clamping bottles or bottle-like containers 110, have a centering bell.
  • the turntable 130 and the centering device 135 are each mounted on along the axial direction of the rotor 100 movable rods 250a and 250b, which are guided by means of the lower and the upper holding device of the rotor 100 in a circular path.
  • the bottles 110 are transported in the neck handling prior to transfer to the receptacles 130, 135.
  • On the upper rod 250b another, not shown drive is present.
  • the rod 250a is automatically moved by means of a control cam 240 arranged in the lower region of the rotor 100 due to the rotational movement of the rotor.
  • the control cam 240 has a corresponding profile on which the rods 250a roll or slide by means of cam followers (rollers, wheels or plain bearings) 245.
  • the profile is chosen such that the containers 110 are moved to a lower level for treatment by the printing station 120 and raised for treatment by the curing station 125 on an upwardly offset plane.
  • By lifting the container 110 is thereby retracted into the housing 225, which is closed by closing the side members and thus the inner member 270 and by means of the turntable 130 down and to all sides light-tight.
  • the housing formed 225 can be closed upwards light-tight. Thus, neither direct nor indirect radiation penetrates out of the enclosure 225 during the curing process.
  • the stationary curing station 125 is located at a sufficient height, e.g. B. over the heads of Operators, can also be dispensed with a shield upwards in general.
  • the turntable 130 is dispensed with the turntable 130 and the bottle held only by the upper receptacle 135.
  • the side walls or the inner wall of the housing are completely stationary and immovable.
  • the enclosure is then preferably slightly below the plane on which the print heads 120 are arranged.
  • the enclosure is then designed as a pot in which the container 110 is retracted from above.
  • the centering or holding head 135 includes a bell for closing the pot.
  • the Figures 3 and 4 show schematically an alternative development according to the present invention, in which the housing is formed by pivoting about a tangent to the circulation of the rotor 100 arranged axis 390 pivotable portion 325 of the housing.
  • the pivotable part 325 of the housing in this case comprises an outer part 375 and has a recess 380 for the passage of the centering device 135 and the container 110 when the part 325 from a waiting position, as in FIG. 3 shown in a working position, as in FIG. 4 shown, is pivoted about the container 110.
  • the outer part 375 forms in the illustrated, non-limiting embodiment simultaneously the rear wall and optionally the side walls of Aushärtestation 125 and also surrounds the radiation source 326.
  • the entire curing station together with the housing 325 from a waiting position ( FIG. 3 ) into a working position ( FIG. 4 ) pivoted about the axis 390.
  • Only the inner part 370 of the housing is not pivoted, but runs synchronously with the respective container receptacle 130, as shown here.
  • a synchronously circumscribing inner portion 370 in addition to forming the enclosure in the region of the curing station, may also serve as a baffle plate for printing ink in the area of the printing station 120.
  • the inner part 370 may be mechanically connected to the shaft of the rotor 100.
  • the pivoting of the pivotable part 325 of the housing and optionally the curing station 125 between the waiting position and the working position can be connected by means of a rotor and circumferential cam, which cooperates with, for example, an arm of the pivoting device, or by means of a separate drive.
  • the movably formed part 325 of the housing and optionally the curing station 125 can also be moved linearly in the radial and / or axial direction, for example with a linear axis driven by a controllable drive.
  • the swiveling device is arranged in the same plane as the printing station 120, in particular in the case of synchronously circulating inner parts 370.
  • FIG. 5 shows an alternative exemplary embodiment of the in FIG. 2 shown, axially offset housing according to the present invention, in which an inner part 570, preferably including the side walls of the housing rotates synchronously with the respective container receptacle 130.
  • the synchronously rotating inner parts 570 are thus arranged on the same plane as the stationary part 225 of the housing and the curing station 125, namely along the axial direction of the rotor 100 to the plane of the printing station 120 offset upwards.
  • the circulating parts 570 are mechanically connected to a shaft of the rotor 100.
  • the height offset is greater than the maximum height of the containers 110 to be treated.
  • the enclosure is formed by relative movement of the container receptacle and / or parts of the protective device only immediately before reaching the curing station and also canceled after completion of the fixing process.
  • Any side elements are opened to retract one or more containers by means of a closing device and closed to treat the container.
  • the side elements may be attached to an inner part of the protective device and / or an outer part of the protective device.
  • horizontally hinged sheets or movable U-shaped side segments are conceivable. The page elements can thereby overlap with the inner and / or outer part such that no radiation can escape laterally from the housing formed.
  • the housing is only in the area of the curing station 125, when receiving and dispensing the containers from an inlet star 150 or to an outlet star 155, no collisions can occur with possibly rotating parts of the protective device, so that the protective device does not hinder the flow of containers. Thereby, the rotational speed of the rotor 100 can be increased and the total throughput of containers can be increased.
  • the UV lamp 226, 326 can be adjusted relative to the outer housing 275, 375 or with the outer housing together such that a distance to the container can be varied.
  • the enclosure is designed interchangeable.
  • the containers are rotated once around their axis during the stay in the enclosure by means of the recording.
  • an already mentioned slave use is conceivable in which the container is preferably suspended and only an upper receptacle 135 is used. In that case, the enclosures can be closed from below with a stationary one.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Ink Jet (AREA)
  • Printing Methods (AREA)
  • Coating Apparatus (AREA)

Claims (15)

  1. Dispositif d'impression destiné à l'impression sur des contenants (110), comprenant :
    un rotor (100) pouvant être entraîné et comportant un grand nombre de supports d'accueil de contenant (130) rotatifs autour d'axes de rotation individuels orientés parallèlement à l'axe de rotation du rotor, et à l'aide desquels les contenants (110) peuvent être déplacés en révolution entre au moins un transporteur d'amenée (150) et au moins un transporteur d'évacuation (155) ;
    au moins une tête d'impression pour l'application d'une image imprimée sur les contenants ;
    au moins un poste de durcissement (125), qui assure le durcissement de l'image imprimée ayant été appliquée sur une surface extérieure de contenant d'un contenant (110), qui est agencé de manière stationnaire à la périphérie du rotor (100), et qui, en se référant au mouvement de révolution, est agencé en aval de la position (120) dans laquelle l'image imprimée est appliquée sur le contenant ; et
    au moins un dispositif de protection ;
    dispositif d'impression
    dans lequel au moins un support d'accueil de contenant (130) et le dispositif de protection sont réalisés de manière telle que, par déplacement relatif du support d'accueil de contenant (130) et d'au moins une partie du dispositif de protection, il soit formé dans la zone du poste de durcissement (125), une enceinte de capotage pour au moins un contenant (110) embarqué par le support d'accueil de contenant (130) ; et
    dans lequel le support d'accueil de contenant (130) est réalisé de manière à fermer au moins partiellement, dans une direction axiale du rotor (100), l'enceinte de capotage dans la zone du poste de durcissement (125).
  2. Dispositif d'impression selon la revendication 1, dans lequel le poste de durcissement (125) comprend au moins une source de rayonnement (226, 326) pour l'émission de rayonnement UV ou d'électrons.
  3. Dispositif d'impression selon la revendication 2, dans lequel l'enceinte de capotage formée par le support d'accueil de contenant (130) et le dispositif de protection, enferme en plus du contenant (110) embarqué, au moins la source de rayonnement (226, 326).
  4. Dispositif d'impression selon l'une des revendications précédentes, dans lequel au moins une partie (270, 275, 370) du dispositif de protection est agencé en position fixe dans la zone du poste de durcissement (125).
  5. Dispositif d'impression selon la revendication 4, dans lequel au moins une partie (270, 370) de l'enceinte de capotage formée, qui est intérieure relativement à une direction radiale du rotor (100), est réalisée en tant que partie en position fixe du dispositif de protection dans la zone du poste de durcissement (125).
  6. Dispositif d'impression selon l'une des revendications 1 à 3, dans lequel au moins une partie (370, 570) de l'enceinte de capotage formée, qui est intérieure relativement à une direction radiale du rotor (100), est réalisée en tant qu'une partie de l'enceinte de capotage en révolution synchrone avec le support d'accueil de contenant (130).
  7. Dispositif d'impression selon la revendication 5 ou la revendication 6,
    dans lequel une partie (225) de l'enceinte de capotage formée, qui est extérieure relativement à une direction radiale du rotor (100), est réalisée en tant que partie en position fixe (275) du dispositif de protection dans la zone du poste de durcissement (125) ;
    dans lequel le dispositif de protection est agencé de manière décalée par rapport au poste d'impression (120), le long d'une direction axiale du rotor (100) ; et
    dans lequel le support d'accueil de contenant (130) est réalisé déplaçable dans la direction axiale, dans la zone du poste de durcissement (125).
  8. Dispositif d'impression selon la revendication 7, comprenant, par ailleurs, une came de commande (240), qui est réalisée de manière telle, que le support d'accueil de contenant (130), dans la zone du poste de durcissement (125), soit déplacé dans la direction axiale par l'intermédiaire de la came de commande (240) de façon telle que le contenant (110) embarqué soit introduit dans l'enceinte de capotage formée.
  9. Dispositif d'impression selon la revendication 5 ou la revendication 6,
    dans lequel une partie (325) de l'enceinte de capotage formée, qui est extérieure relativement à une direction radiale du rotor (100), est réalisée en tant que partie (375) du dispositif de protection, qui est pivotante et/ou déplaçable dans la direction radiale et/ou déplaçable dans une direction axiale du rotor (100), à la périphérie du rotor (100) ; et
    le dispositif d'impression comprend, par ailleurs, un entraînement et/ou une came de commande, par l'intermédiaire duquel et/ou de laquelle la partie extérieure (325) de l'enceinte de capotage peut être pivotée et/ou déplacée pour former l'enceinte de capotage dans la zone du poste de durcissement (125).
  10. Dispositif d'impression selon la revendication 6,
    dans lequel une partie de l'enceinte de capotage formée, qui est intérieure relativement à la direction radiale du rotor (100), en commun avec une partie de l'enceinte de capotage formée, qui est extérieure relativement à la direction radiale, et au moins un élément latéral de l'enceinte de capotage formée, qui relie la partie intérieure et la partie extérieure, est réalisée en tant que partie du dispositif de protection, qui est en révolution synchrone avec le support d'accueil de contenant (130) ; et
    la partie du dispositif de protection, qui est en révolution synchrone, étant réalisée déplaçable le long d'une direction axiale du rotor (100).
  11. Dispositif d'impression selon la revendication 10,
    le dispositif d'impression comprenant, par ailleurs un entraînement et/ou une came de commande, par l'intermédiaire duquel et/ou de laquelle la partie du dispositif de protection, qui est en révolution synchrone, est déplacée, à partir d'une position décalée le long de la direction axiale par rapport au poste d'impression (120), en direction du support d'accueil de contenant (130), pour former l'enceinte de capotage dans la zone du poste de durcissement (125).
  12. Dispositif d'impression selon l'une des revendications 1 à 9,
    dans lequel le dispositif de protection comprend au moins un élément latéral mobile en tant que partie de l'enceinte de capotage formée, et un dispositif de fermeture,
    qui est réalisé de manière telle, que l'élément latéral mobile s'ouvre pour permettre l'entrée d'un contenant (110) dans l'enceinte de protection, puis se referme après l'entrée du contenant.
  13. Dispositif d'impression selon l'une des revendications précédentes,
    dans lequel le dispositif de protection est réalisé de manière telle, que l'enceinte de protection formée puisse enfermer plus qu'un contenant (110).
  14. Dispositif d'impression selon l'une des revendications 2 à 13,
    dans lequel l'enceinte de capotage formée enferme le contenant (110) embarqué et la source de rayonnement (226, 326), sensiblement de manière étanche à la lumière.
  15. Dispositif d'impression selon l'une des revendications précédentes,
    dans lequel au moins des parties, comme par exemple des éléments de l'enceinte de capotage ou une lampe UV du poste de durcissement, sont fixés à celui-ci de manière amovible et/ou déplaçable.
EP14178474.4A 2013-09-04 2014-07-25 Dispositif d'impression de récipients Active EP2845738B1 (fr)

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DE102015215227A1 (de) * 2015-08-10 2017-02-16 Krones Ag Behälterbehandlungsmaschine und Verfahren zur Bedruckung von Behältern
DE102015222996A1 (de) * 2015-11-20 2017-05-24 Krones Ag Aushärtestation und Verfahren zum Aushärten von Druckfarbe eines Direktdrucks auf Behältern
CN105774259A (zh) * 2016-03-29 2016-07-20 苏州恩欧西智能科技有限公司 回转体产品的激光打标装置
US9827784B1 (en) * 2016-05-25 2017-11-28 Xerox Corporation System for printing on three-dimensional (3D) objects
DE102017215446A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckmaschine zum Direktbedrucken von Behältern
DE102018211337A1 (de) * 2018-07-10 2020-01-16 Krones Ag Direktdruckmaschine und -verfahren zur Bedruckung von Behältern mit einem Direktdruck
CN111689144A (zh) * 2020-06-10 2020-09-22 合肥仁邦医疗机械有限公司 一种用于试管标记装置
DE102020132134A1 (de) 2020-12-03 2022-06-09 Krones Aktiengesellschaft Direktdruckmaschine
CN112549806B (zh) * 2020-12-09 2022-09-16 黑龙江世轩塑料制品有限公司 一种塑料产品的快速印刷工艺
CN115534522B (zh) * 2022-09-26 2023-11-03 湖南华庆科技有限公司 一种手机背壳膜片喷码设备

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EP1491336A1 (fr) * 2003-06-23 2004-12-29 Machines Dubuit Machine d'impression d'objets à protection améliorée vis-à-vis du rayonnement ultraviolet
FR2985683A1 (fr) * 2012-01-16 2013-07-19 Jean Luc Perret Machine d'impression sur articles en trois dimensions et procede d'impression

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DE102013217665A1 (de) 2015-03-05
CN104417035B (zh) 2017-05-24
CN104417035A (zh) 2015-03-18

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