EP0209896B1 - Method and apparatus for decorating metal or plastic containers - Google Patents
Method and apparatus for decorating metal or plastic containers Download PDFInfo
- Publication number
- EP0209896B1 EP0209896B1 EP86110123A EP86110123A EP0209896B1 EP 0209896 B1 EP0209896 B1 EP 0209896B1 EP 86110123 A EP86110123 A EP 86110123A EP 86110123 A EP86110123 A EP 86110123A EP 0209896 B1 EP0209896 B1 EP 0209896B1
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- EP
- European Patent Office
- Prior art keywords
- container
- containers
- nozzles
- round
- cross
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0442—Installation or apparatus for applying liquid or other fluent material to separate articles rotated during spraying operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
- B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/413—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material for metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0082—Digital printing on bodies of particular shapes
- B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/26—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for marking or coding completed packages
Definitions
- the invention relates to a device and a method for decorating containers made of metal, plastic, glass, cardboard or paper, also as a composite, which are at least partially delimited in cross-section by round or round-shaped wall sections by applying printed images which are at least over extend a part of the round or round-oval wall sections onto a rotating object, in particular for the all-round printing of round or round-oval containers with the use of a movable carriage arrangement with nozzles directed towards the object according to the ink jet method using ink or pigmented paint jets.
- the object of the invention is therefore to propose a device and a method of the type mentioned in the introduction, in which the printing plates which are otherwise necessary and carried by the rollers are eliminated and with one and the same device a pressure-free transmission of the most varied of printed images is made possible.
- a device which is characterized by a holding device which accommodates the containers individually and which acts on the containers outside their outer surfaces to be printed, by a drive device for driving the containers in the holding device rotating about their longitudinal axis, by a distance provided from the located in the holder container gradually parallel to Benzofterlijnsachse or continuously movable slide arrangement with directed towards the container nozzle, after the ink - to be decorated jet method by means of ink or pigmented paint jets by means of program-controlled application of individual colored dots along parallel peripheral lines on the wall of the Generate the print image as a raster image, and by a sensor for measuring the distance of the nozzles from the container in the jet direction and by a control and drive device for adjusting the nozzles in R. towards and away from the container.
- the InkzJet method is known per se, for example for the application of inscriptions on various documents as well as on medicinal tablets (DE-OS-2 849 495) and is also used for printing coding strips on packaging containers for optical scanning.
- the ink jet method offers the possibility of using the color mixing laws to create complex print images and can also be carried out by contactless application of the individual color dots on surfaces that are not smooth, so that, for example, the corrugated area of these cans in packaging cans the decor picture can be included.
- a raster image is generated which, with a corresponding sequence of the color dots, appears optically as a surface image and no longer as a raster image.
- the decor can be changed without changing the color and printing form simply by changing the program for the application of the individual color dots, the program control being carried out electronically and by the appropriate selection of the grid with the aid of a partial overlap of the color dots also allowing the halftone generation.
- the printed image can arise during easily controllable relative movements between the container and the ink or paint jet generating device.
- the container can be made to rotate, while the device for generating the ink or lacquer jets can be held stationary.
- the individual color points are applied along parallel screw lines or line sections. For example, it is only necessary to move the container around to drive its longitudinal axis in rotation and at the same time to move it continuously in the direction of its longitudinal axis according to the desired pitch of the helix.
- the individual color dots can be applied directly next to one another and / or partially overlapping one another, the latter being considered in particular for the production of halftones.
- the containers described above can also be driven to rotate about their longitudinal axis and the spray nozzles can be moved stepwise in the direction of the longitudinal axis of the containers so that the color dots line up in the longitudinal direction and on the circumference of the container.
- the containers are driven to rotate about their longitudinal axis and the spray nozzles are moved linearly to the longitudinal axis of the containers in such a way that the pitch of the helix generated by the color points of the nozzles corresponds to the width of the helix corresponds.
- the new device is particularly suitable for containers with an annular cylindrical cross section and is particularly suitable for these containers for applying all-round printing.
- the method is not limited to the use of the aforementioned containers, but it can also be used for containers which have an oval shape that is different from the circular cross-sectional shape.
- the distance is kept constant expediently via a sensor for measuring the distance of the nozzles from the container in the jet direction and with a control and drive device for adjusting the nozzles in the direction of the container or away from it.
- the electronic program control in the ink jet method enables the direct transfer of print images from a template to the containers to be printed.
- a print template can be optically scanned and divided into pixels with detection of the local and color coordinates in order to convert the coordinates assigned to the pixels into digital data and to forward them to the program control for the spray nozzles for generating the print image.
- the digital data can be stored in the usual way on a corresponding data carrier and called up at any time to generate the print image or used for program control of the spray nozzles.
- the holding device and the drive device for the container and the movable carriage arrangement according to the invention are advantageously designed in the manner of a support.
- the carriage arrangement can be designed particularly effectively in that it has a cross-sectionally C-shaped or U-shaped support for the nozzles directed onto the surface of the container.
- the slide arrangement can have a cross slide with a holding device for the nozzles for moving the nozzles in the longitudinal and transverse directions of the container.
- FIG. 1 shows a container to be printed, generally designated 1, which in this example is designed as a can to be printed all around.
- the container is received or clamped between pressure plates 2 and 2a movable in the longitudinal axis of the container, the plate 2a being rotatably held on the shaft 3a, while the plate 2 is connected in a rotationally secure manner to the shaft 3, which in turn can be driven by a motor 4 .
- a slide arrangement 6 can be moved in the direction of the double arrow 7, held and connected to a corresponding drive motor 8 on a rail 5 which runs parallel to the longitudinal axis of the container 1.
- the slide arrangement 6 supports an approximately C-shaped support 9, which surrounds the container 1 to be printed on part of its circumference and is equipped on its side facing the container 1 with nozzles 10 to 13 or nozzle heads directed towards the container surface.
- the individual nozzles or nozzle heads can be equipped as spray nozzles or nozzle heads for applying different colors in order to provide the container 1 with a four-color print job.
- the rotation generated by the motor 4 Movement of the container on the one hand and the movement of the carriage 6 by means of the motor 8 generated in the direction of the longitudinal axis of the container can be coordinated with one another via a control device 14 so that the color points applied to the container 1 by means of the nozzles or nozzle heads are applied along a helix.
- the nozzles 10 to 13 or nozzle heads are offset from one another in the direction of the longitudinal axis of the container according to FIG. 3 by a predetermined angle ⁇ , specifically the angle ⁇ is set so that the individual nozzles or nozzle blocks with their inks or pigmented ones Lacquer blasting can reach all points on the surface of the container 1 except for the outermost peripheral edge zones, so that a full four-color print can be applied to the circumference of the container.
- the nozzles or nozzle assemblies are arranged offset by an angular distance a about the axis of rotation of the container 1.
- the conveying path 24 of the containers 1 is also indicated, on which the containers are fed to the printing station or from which they are removed from the printing station.
- the containers 1, which in this case have the shape of bottles, can be transferred to the printing station via a turntable arrangement 15 along the conveying path 24 according to FIG. 2 and removed again from this station.
- FIG. 4 schematically shows a feed conveyor 16 on which the containers 1 are fed to the turntable arrangement 15.
- Another discharge conveyor not shown in the drawing, takes over the printed containers in order to pass them on for further processing.
- the containers 1 reach the pressure plate 2 which can be driven by a motor 4 and are held between the plates mentioned by means of the pressure plate 2a which can be moved in the direction of the double arrow 17.
- the turntable arrangement 15 is rotated step by step about its central longitudinal axis 19 by a motor 18, so that the containers 1 each reach the printing station shown in FIG. 2, which is shown schematically in FIG. 4 in the left part of this figure.
- the container 1 is set into rotational movements via the pressure plate 2 and the motor 4 connected to it, while the carrier 9 is moved with the nozzles 10 to 13 arranged on its inside in a direction parallel to the longitudinal axis of the container via the motor 8, as has already been described in connection with FIGS. 1 to 3.
- a stepping motor 8 which interacts with the slide 6, can also perform a discontinuous displacement movement of the slide by the width of one color point or, if appropriate, also several color points with a corresponding arrangement of nozzle heads, in order to run parallel to one another in the circumferential direction of the container To generate rows of color dots, which in turn lead to the desired print image.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Ink Jet (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printing Methods (AREA)
- Duplication Or Marking (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Dekorieren von Behältern aus Metall, Kunststoff, Glas, Pappe oder Papier, auch als Verbundstoff, die wenigstens teilweise im Querschnitt gesehen von runden oder rundovalen Wandungsabschnitten begrenzt sind, durch Auftragen von Druckbildern, welche sich zumindest über einen Teil der runden oder rundovalen Wandungsabschnitte erstrecken, auf ein rotierendes Objekt, insbesondere zum Rundumbedrucken von im Querschnitt runden oder rundovalen Behältern, unter Einsatz einer verfahrbaren Schlittenanordnung mit auf das Objekt gerichteten Düsen nach der Ink Jet-Methode mittels Tinten-oder pigmentierter Lackstrahlen.The invention relates to a device and a method for decorating containers made of metal, plastic, glass, cardboard or paper, also as a composite, which are at least partially delimited in cross-section by round or round-shaped wall sections by applying printed images which are at least over extend a part of the round or round-oval wall sections onto a rotating object, in particular for the all-round printing of round or round-oval containers with the use of a movable carriage arrangement with nozzles directed towards the object according to the ink jet method using ink or pigmented paint jets.
Das Dekorieren von Behältern der vorgenannten Art durch Auftragen von Druckbildern erfolgt bisher ausschließlich unter Verwendung von Druckwalzen, welche mit den Behältern im Bereich des aufzubringenden Druckbildes in Kontakt gebracht werden, wobei die Druckwalzen zur Übertragung des Druckbildes mit einem vorbestimmten Druck an die Behälter angedrückt werden müssen. Dabei ist es erforderlich, die Umfangsgeschwindigkeit der Druckwalzen und der Behälter im Bereich der Berührungsflächen zu synchronisieren, was insbesondere bei der Bedruckung von Behältern während einer Förderbewegung zu einem außerordentlich großen Aufwand führt.The decorating of containers of the aforementioned type by applying printed images has hitherto only been carried out using printing rollers which are brought into contact with the containers in the area of the printed image to be applied, the printing rollers having to be pressed onto the containers at a predetermined pressure in order to transfer the printed image . It is necessary to synchronize the peripheral speed of the pressure rollers and the containers in the area of the contact surfaces, which leads to an extraordinarily great effort, particularly when printing containers during a conveying movement.
Infolge der sich berührenden Oberflächen des Behälters und der Druckwalze können erhebliche Beeinträchtigungen des Druckbildes durch kleinste Fremdkörper in Form von Kratzern oder dgl. auftreten, wenn diese kleinen Fremdkörper zwischen die zu bedruckende Oberfläche und die Druckwalze gelangen. Eine Änderung des Druckbildes erfordert bei den bekannten Verfahren den Austausch der Walzen und ggf. auch der jeweiligen Farbwerke. Mit den bekannten Verfahren ist es in der Regel auch nicht möglich, im Rahmen des aufzubringenden Druckbildes Halbtöne zu drucken.As a result of the contacting surfaces of the container and the printing roller, considerable impairments of the printed image due to the smallest foreign bodies in the form of scratches or the like can occur if these small foreign bodies get between the surface to be printed and the printing roller. A change in the printed image in the known methods requires the rollers and possibly also the respective inking units to be replaced. With the known methods, it is also generally not possible to print halftones in the context of the print image to be applied.
Aufgabe der Erfindung ist es daher, eine Vorrichtung und ein Verfahren der einleitend genannten Art vorzuschlagen, bei denen die sonst notwendigen von den Walzen getragenen Druckformen in Fortfall kommen und mit ein und derselben Einrichtung eine andruckfreie Übertragung der verschiedensten Druckbilder ermöglicht wird. Diese Aufgabe wird durch eine Vorrichtung gelöst, die gekennzeichnet ist durch eine die Behälter einzeln aufnehmende Halteeinrichtung, welche an den Behältern außerhalb ihrer zu bedruckenden Außenoberflächen angreift, durch eine Antriebseinrichtung, um die Behälter in der Halteeinrichtung um ihre Längsachse rotierend anzutreiben, durch eine im Abstand von dem in der Halteeinrichtung befindlichen Behälter vorgesehene parallel zur Behäfterlängsachse schrittweise oder kontinuierlich verfahrbare Schlittenanordnung mit auf den Behälter gerichteten Düsen, die nach der Ink-Jet-Methode mittels Tinten oder pigmentierter Lackstrahlen durch programmgesteuertes Aufbringen einzelner Farbpunkte entlang paralleler Umfangslinien auf der Wandung des zu dekorierenden Behälters das Druckbild als Rasterbild erzeugen, sowie durch einen Sensor zur Messung des Abstandes der Düsen von dem Behälter in Strahlrichtung und durch eine Regel- und Antriebseinrichtung zur Verstellung der Düsen in Richtung auf den Behälter und von ihm weg.The object of the invention is therefore to propose a device and a method of the type mentioned in the introduction, in which the printing plates which are otherwise necessary and carried by the rollers are eliminated and with one and the same device a pressure-free transmission of the most varied of printed images is made possible. This object is achieved by a device which is characterized by a holding device which accommodates the containers individually and which acts on the containers outside their outer surfaces to be printed, by a drive device for driving the containers in the holding device rotating about their longitudinal axis, by a distance provided from the located in the holder container gradually parallel to Behäfterlängsachse or continuously movable slide arrangement with directed towards the container nozzle, after the ink - to be decorated jet method by means of ink or pigmented paint jets by means of program-controlled application of individual colored dots along parallel peripheral lines on the wall of the Generate the print image as a raster image, and by a sensor for measuring the distance of the nozzles from the container in the jet direction and by a control and drive device for adjusting the nozzles in R. towards and away from the container.
Die InkzJet-Methode ist zwar an sich, beispielsweise für das Aufbringen von Beschriftungen auf verschiedenen Unterlagen wie auch auf Arzneimittelformlingen, bekannt (DE-OS-2 849 495) und wird auch für das Aufdrucken von Kodierungsstreifen auf Verpackungsbehältern für die optische Abtastung angewendet.The InkzJet method is known per se, for example for the application of inscriptions on various documents as well as on medicinal tablets (DE-OS-2 849 495) and is also used for printing coding strips on packaging containers for optical scanning.
Aus der US-PS-3 975 740 ist es bekannt, mit der Ink-Jet-Methode einen auf eine rotierende Trommel aufgespannten Aufzeichnungsträger mit einem vorgegebenen u.U. auch farbigen Bild zu versehen. Dabei werden die Düsen während des Sprühens in Längsrichtung der rotierenden Trommel verschoben.From US Pat. No. 3,975,740 it is known to use the ink-jet method to record a record carrier that is clamped onto a rotating drum and that may have a predetermined value. also to provide a colored picture. The nozzles are moved in the longitudinal direction of the rotating drum during spraying.
Diese bekannten Vorrichtungen sind jedoch für die flächendeckende Bedruckung eines zu dekorierenden Behälters mit einem Druckbild nicht geeignet.However, these known devices are not suitable for the area-wide printing of a container to be decorated with a printed image.
Jedoch bietet die Ink-Jet-Methode die Möglichkeit, mit Hilfe der Farbmischgesetze eine komplexe Druckbilderzeugung vorzunehmen und läßt sich auch durch das kontaktlose Aufbringen der einzelnen Farbpunkte auf Oberflächen vornehmen, die nicht glatt sind, so daß beispielsweise bei Verpackungsdosen auch der Sickenbereich dieser Dosen in das Dekorbild einbezogen werden kann. Durch entsprechendes Aufbringen der einzelnen Farbpunkte entlang dicht nebeneinander angeordneter paralleler Umfangslinien auf der Wandung des Behälters wird ein Rasterbild erzeugt, welches bei entsprechender Folge der Farbpunkte optisch als Flächenbild und nicht mehr als Rasterbild erscheint. Ein Dekorwechsel erfolgt ohne Farb- und Druckformenwechsel allein durch entsprechende Änderung des Programmes für das Aufbringen der einzelnen Farbpunkte, wobei die Programmsteuerung elektronisch vorgenommen wird und durch die entsprechende Wahl des Rasters mit Hilfe einer teilweisen Überdeckung der Farbpunkte auch die Halbtonerzeugung gestattet.However, the ink jet method offers the possibility of using the color mixing laws to create complex print images and can also be carried out by contactless application of the individual color dots on surfaces that are not smooth, so that, for example, the corrugated area of these cans in packaging cans the decor picture can be included. By appropriately applying the individual color dots along parallel circumferential lines arranged closely next to one another on the wall of the container, a raster image is generated which, with a corresponding sequence of the color dots, appears optically as a surface image and no longer as a raster image. The decor can be changed without changing the color and printing form simply by changing the program for the application of the individual color dots, the program control being carried out electronically and by the appropriate selection of the grid with the aid of a partial overlap of the color dots also allowing the halftone generation.
Durch die Aufbringung der einzelnen Farbpunkte entlang paralleler Umfangslinien auf der Wandung des Behälters kann das Druckbild während einfach steuerbarer Relativbewegungen zwischen dem Behälter und der tinten- oder lackstrahlerzeugenden Einrichtung entstehen. So kann beispielsweise der Behälter in Rotationsbewegungen versetzt werden, während die Einrichtung zur Erzeugung der Tinten- bzw. Lackstrahlen ortsfest gehalten werden kann. Dabei ist es zweckmäßig, wenn die einzelnen Farbpunkte entlang paralleler Schraubenlinien oder -linienabschnitte aufgebracht werden. Hierzu ist es beispielsweise nur erforderlich, den Behälter um seine Längsachse rotierend anzutreiben und ihn gleichzeitig in Richtung seiner Längsachse kontinuierlich entsprechend der gewünschten Steigung der Schraubenlinie zu bewegen.By applying the individual color dots along parallel circumferential lines on the wall of the container, the printed image can arise during easily controllable relative movements between the container and the ink or paint jet generating device. For example, the container can be made to rotate, while the device for generating the ink or lacquer jets can be held stationary. It is expedient if the individual color points are applied along parallel screw lines or line sections. For example, it is only necessary to move the container around to drive its longitudinal axis in rotation and at the same time to move it continuously in the direction of its longitudinal axis according to the desired pitch of the helix.
Die einzelnen Farbpunkte können dabei unmittelbar nebeneinander und/oder teils einander überdeckend aufgebracht werden, wobei letzteres insbesondere für die Halbtonerzeugung in Betracht kommt.The individual color dots can be applied directly next to one another and / or partially overlapping one another, the latter being considered in particular for the production of halftones.
Statt der vorbeschriebenen schraubenlinienartigen Rotationsbewegung der Behälter können diese auch um ihre Längsachse rotierend angetrieben und die Spritzdüsen in Richtung der Längsachse der Behälter schrittweise so bewegt werden, daß sich die Farbpunkte in Längsrichtung und auf dem Umfang des Behälters aneinanderreihen.Instead of the helical rotational movement of the containers described above, they can also be driven to rotate about their longitudinal axis and the spray nozzles can be moved stepwise in the direction of the longitudinal axis of the containers so that the color dots line up in the longitudinal direction and on the circumference of the container.
Um ein optisch deckend in Erscheinung tretendes Dekorbild zu erzeugen, ist es zweckmäßig, wenn die Behälter um ihre Längsachse rotierend angetrieben und die Spritzdüsen linear zur Längsachse der Behälter so bewegt werden, daß die Steigung der von den Farbpunkten der Düsen erzeugten Schraubenlinie der Breite der Schraubenlinie entspricht.In order to create an optically opaque decorative image, it is expedient if the containers are driven to rotate about their longitudinal axis and the spray nozzles are moved linearly to the longitudinal axis of the containers in such a way that the pitch of the helix generated by the color points of the nozzles corresponds to the width of the helix corresponds.
Die neue Vorrichtung ist insbesondere geeignet für Behälter mit kreisringförmigem zylindrischem Querschnitt und eignet sich dabei für diese Behälter insbesondere zum Aufbringen einer Rundumbedruckung.The new device is particularly suitable for containers with an annular cylindrical cross section and is particularly suitable for these containers for applying all-round printing.
Andererseits ist das Verfahren jedoch nicht zur Anwendung auf die vorgenannten Behälter beschränkt, sondern es läßt sich auch für Behälter verwenden, die eine von der kreisringförmigen Querschnittsgestalt abweichende, insbesondere ovale Form aufweisen. In diesem Falle ist es jedoch zweckmäßig, den Abstand der Spritzdüsen zu dem ihnen jeweils gegenüberliegenden Bereich der Behälteroberfläche konstant zu halten. Dies ist deshalb zweckmäßig, weil anderenfalls durch den unterschiedlichen Abstand der Behälteroberfläche von den Spritzdüsen die aufgebrachten Farbpunkte einen unterschiedlichen Durchmesser bzw. eine unterschiedliche Form aufweisen und hierdurch die Einheitlichkeit des Rasters und auch das farbliche Erscheinungsbild der einzelnen Flächen durch teilweise überdekkende Farbpunkte empfindlich gestört werden kann.On the other hand, however, the method is not limited to the use of the aforementioned containers, but it can also be used for containers which have an oval shape that is different from the circular cross-sectional shape. In this case, however, it is expedient to keep the distance between the spray nozzles and the region of the container surface opposite them in each case constant. This is expedient because otherwise the color points applied have a different diameter or a different shape due to the different spacing of the container surface from the spray nozzles, and the uniformity of the grid and also the color appearance of the individual areas can be severely disturbed by partially covering color points .
Das Konstanthalten des Abstandes erfolgt zweckmäßig über einen Sensor zur Messung des Abstandes der Düsen von dem Behälter in Strahlrichtung und mit einer Regel und Antriebseinrichtung zur Verstellung der Düsen in Richtung auf den Behälter oder von ihm weg.The distance is kept constant expediently via a sensor for measuring the distance of the nozzles from the container in the jet direction and with a control and drive device for adjusting the nozzles in the direction of the container or away from it.
Die elektronische Programmsteuerung bei der Ink-Jet-Methode ermöglicht die unmittelbare Übertragung von Druckbildern von einer Vorlage auf die zu bedruckenden Behälter. Zu diesem Zweck kann erfindungsgemäß eine Druckvorlage optisch abgetastet und in Bildpunkte unter Erfassung der örtlichen und farblichen Koordinaten unterteilt werden, um die den Bildpunkten zugeordneten Koordinaten in digitale Daten umzuwandeln und der Programmsteuerung für die Spritzdüsen zur Erzeugung des Druckbildes zuzuleiten. Dabei können die digitalen Daten in der üblichen Weise auf einem entsprechenden Datenträger gespeichert und jederzeit zur Erzeugung des Druckbildes abgerufen bzw. zur Programmsteuerung der Spritzdüsen verwendet werden.The electronic program control in the ink jet method enables the direct transfer of print images from a template to the containers to be printed. For this purpose, according to the invention, a print template can be optically scanned and divided into pixels with detection of the local and color coordinates in order to convert the coordinates assigned to the pixels into digital data and to forward them to the program control for the spray nozzles for generating the print image. The digital data can be stored in the usual way on a corresponding data carrier and called up at any time to generate the print image or used for program control of the spray nozzles.
Die Halteeinrichtung sowie die Antriebseinrichtung für den Behälter und die verfahrbare Schlittenanordnung gemäß der Erfindung sind vorteilhafterweise nach Art eines Supports ausgebildet.The holding device and the drive device for the container and the movable carriage arrangement according to the invention are advantageously designed in the manner of a support.
Die Schlittenanordnung kann besonders wirkungsvoll dadurch gestaltet werden, daß sie einen im Querschnitt C- oder U-förmigen, den zu bedruckenden Behälter umgreifenden Träger für die auf die Behälteroberfläche gerichteten Düsen aufweist.The carriage arrangement can be designed particularly effectively in that it has a cross-sectionally C-shaped or U-shaped support for the nozzles directed onto the surface of the container.
Insbesondere kann die Schlittenanordnung einen Kreuzschlitten mit einer Halteeinrichtung für die Düsen zum Verfahren der Düsen in Längs-und Querrichtung des Behälters aufweisen.In particular, the slide arrangement can have a cross slide with a holding device for the nozzles for moving the nozzles in the longitudinal and transverse directions of the container.
Die Erfindung wird anhand der beigefügten schematischen Zeichnungen erläutert.The invention will be explained with reference to the attached schematic drawings.
Es zeigen:
- Fig. 1 die prinzipielle Ausbildung einer Vorrichtung zur Durchführung des Verfahrens in einem Schnitt entlang der Schnittlinie I - I der Fig. 2,
- Fig. 2 einen Schnitt durch die Anordnung nach Fig. 1 entlang der Schnittlinie II - 11,
- Fig. 3 eine Abwicklung der Düsenkopfanordnung nach Fig. 2,
- Fig. 4 rein schematisch eine Drehtelleranordnung mit einer Vorrichtung gemäß den Fig. 1 und 2.
- 1 shows the basic design of a device for performing the method in a section along the section line I - I of FIG. 2,
- 2 shows a section through the arrangement according to FIG. 1 along the section line II-11,
- 3 shows a development of the nozzle head arrangement according to FIG. 2,
- 4 purely schematically a turntable arrangement with a device according to FIGS. 1 and 2.
In der Fig. 1 ist ein insgesamt mit 1 bezeichneter zu bedruckender Behälter erkennbar, welcher in diesem Beispiel als rundum zu bedruckende Dose ausgebildet ist. Der Behälter ist zwischen in Längsachse des Behälters bewegbaren Andruckplatten 2 und 2a aufgenommen bzw. eingespannt, wobei die Platte 2a rotierbar auf der Welle 3a gehalten ist, während die Platte 2 drehsicher mit der Welle 3 verbunden ist, die ihrerseits über einen Motor 4 antreibbar ist.1 shows a container to be printed, generally designated 1, which in this example is designed as a can to be printed all around. The container is received or clamped between
Auf einer im Abstand zur Längsachse des Behälters 1 parallel verlaufenden Schiene 5 ist eine Schlittenanordnung 6 in Richtung des Doppelpfeiles 7 verfahrbar, gehalten und mit einem entsprechenden Antriebsmotor 8 verbunden. Die Schiittenanordnung 6 stützt einen etwa C-förmigen Träger 9 ab, weicher den zu bedruckenden Behälter 1 auf einem Teil seines Umfanges umgreift und der auf seiner dem Behälter 1 zugekehrten Seite mit auf die Behälteroberfläche gerichteten Düsen 10 bis 13 bzw. Düsenköpfen ausgerüstet ist. Die einzelnen Düsen bzw. Düsenköpfe können dabei als Spritzdüsen bzw. Düsenköpfe für das Aufbringen unterschiedlicher Farben ausgerüstet sein, um den Behälter 1 mit einem Vierfarben-Druckauftrag zu versehen.A
Die mittels des Motors 4 erzeugte Rotationsbewegung des Behälters einerseits und die in Richtung der Behälterlängsachse erzeugte Verfahrbewegung des Schlittens 6 mittels des Motors 8 können über eine Steuereinrichtung 14 so aufeinander abgestimmt werden, daß die auf den Behälter 1 mittels der Düsen bzw. Düsenköpfe aufgebrachten Farbpunkte entlang einer Schraubenlinie aufgebracht werden.The rotation generated by the
Die Düsen 10 bis 13 bzw. Düsenköpfe sind dabei in Richtung zur Behälterlängsachse gemäß Fig. 3 um einen vorbestimmten Winkel β gegeneinander versetzt, und zwar wird der Winkel β dabei so eingestellt, daß die einzelnen Düsen bzw. Düsenstöcke mit ihren Tinten- bzw. pigmentierten Lackstrahlen bis auf die äußersten umfänglichen Randzonen sämtliche Stellen der Oberfläche des Behälters 1 erreichen können, so daß ein deckender Vierfarbdruck auf den Behälterumfang aufgebracht werden kann. Die Düsen bzw. Düsenstöcke sind dabei gemäß Fig. 2 um einen Winkelabstand a um die Rotationsachse des Behälters 1 versetzt angeordnet.The
In der Fig. 2 ist noch der Förderweg 24 der Behälter 1 angedeutet, auf dem die Behälter der Bedruckungsstation zugeführt bzw. von der sie aus der Bedruckungsstation abgeführt werden.In FIG. 2, the
Gemäß Fig. 4 können die Behälter 1, welche in diesem Falle die Form von Flaschen aufweisen, über eine Drehtelleranordnung 15 entlang dem Förderweg 24 gemäß Fig. 2 in die Bedrukkungsstation überführt und aus dieser Station wieder abgeführt werden.According to FIG. 4, the
Die Fig. 4 zeigt schematisch einen Zuförderer 16, auf welchem die Behälter 1 der Drehtelleranordnung 15 zugeleitet werden. Ein weiterer in der Zeichnung nicht wiedergegebener Abfuhrförderer übernimmt die bedruckten Behälter, um diese der Weiterbehandlung zuzuleiten.FIG. 4 schematically shows a
Die Behälter 1 gelangen auf die durch einen Motor 4 antreibbare Andruckplatte 2 und werden mittels der in Richtung des Doppelpfeiles 17 bewegbaren Andruckplatte 2a eingespannt zwischen den genannten Platten gehalten. Die Drehtelleranordnung 15 wird über einen Motor 18 schrittweise um ihre Mittellängsachse 19 gedreht, so daß die Behälter 1 jeweils in die in Fig. 2 wiedergegebene Bedruckungsstation gelangen, welche in der Fig. 4 im linken Teil dieser Figur schematisch dargestellt ist. In dieser Position wird der Behälter 1 über die Andruckplatte 2 und den mit dieser verbundenen Motor 4 in Rotationsbewegungen versetzt, während der Träger 9 mit den auf seiner Innenseite angeordneten Düsen 10 bis 13 in Richtung parallel zur Längsachse des Behälters über den Motor 8 verfahren wird, wie dies bereits in Verbindung mit den Figuren 1 bis 3 beschrieben wurde.The
Bei der beschriebenen Anordnung erfolgt die Bedruckung der Behälter 1 mit Hilfe der Düsen bzw. Düsenköpfe entlang einer Schraubenlinie. Statt dessen kann jedoch auch durch einen Schrittschaltmotor 8, welcher mit dem Schlitten 6 zusammenwirkt, eine diskontinuierliche Verschiebebewegung des Schlittens jeweils um die Breite eines Farbpunktes oder ggf. auch mehrerer Farbpunkte bei entsprechender Anordnung von Düsenköpfen erfolgen, um in Umfangsrichtung des Behälters gesehen parallel zueinander verlaufende Farbpunktreihen zu erzeugen, die ihrerseits dann insgesamt zu dem gewünschten Druckbild führen.In the arrangement described, the printing of the
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86110123T ATE50167T1 (en) | 1985-07-26 | 1986-07-23 | METHOD AND DEVICE FOR DECORATING METAL OR PLASTIC CONTAINERS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3526769 | 1985-07-26 | ||
DE19853526769 DE3526769A1 (en) | 1985-07-26 | 1985-07-26 | METHOD FOR DECORATING METAL OR PLASTIC CONTAINERS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0209896A2 EP0209896A2 (en) | 1987-01-28 |
EP0209896A3 EP0209896A3 (en) | 1987-07-22 |
EP0209896B1 true EP0209896B1 (en) | 1990-02-07 |
Family
ID=6276838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86110123A Expired - Lifetime EP0209896B1 (en) | 1985-07-26 | 1986-07-23 | Method and apparatus for decorating metal or plastic containers |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0209896B1 (en) |
JP (1) | JPS6227170A (en) |
AT (1) | ATE50167T1 (en) |
CA (1) | CA1277176C (en) |
DE (2) | DE3526769A1 (en) |
DK (1) | DK330286A (en) |
ES (1) | ES2000753A6 (en) |
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EP0240651A1 (en) * | 1986-02-01 | 1987-10-14 | Schmalbach-Lubeca AG | Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof |
EP0385624A1 (en) * | 1989-03-02 | 1990-09-05 | Cmb Foodcan Plc | An apparatus for, and a method of, printing a pattern on a container component |
EP0494363A2 (en) * | 1990-12-08 | 1992-07-15 | Francotyp-Postalia GmbH | Liquid jet printer for franking machine |
EP0761438A2 (en) * | 1995-09-05 | 1997-03-12 | Tampoprint GmbH | Device for applying designs |
EP1110740A1 (en) * | 1998-09-02 | 2001-06-27 | Star Micronics Co., Ltd. | Method and apparatus for printing on endless medium, method and apparatus for rotary printing, and rotary printing head |
EP1225053A2 (en) * | 2001-01-17 | 2002-07-24 | Dolphin Packaging limited | Printing process and apparatus |
US6578476B2 (en) * | 2001-03-05 | 2003-06-17 | Tlcd Corporation | Print product on demand |
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EP2479036A1 (en) | 2011-01-25 | 2012-07-25 | Krones AG | Method and device for printing containers |
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- 1986-07-18 JP JP61168247A patent/JPS6227170A/en active Pending
- 1986-07-21 CA CA000514255A patent/CA1277176C/en not_active Expired - Lifetime
- 1986-07-23 DE DE8686110123T patent/DE3668799D1/en not_active Expired - Lifetime
- 1986-07-23 AT AT86110123T patent/ATE50167T1/en not_active IP Right Cessation
- 1986-07-23 EP EP86110123A patent/EP0209896B1/en not_active Expired - Lifetime
- 1986-07-24 ES ES8600587A patent/ES2000753A6/en not_active Expired
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0240651A1 (en) * | 1986-02-01 | 1987-10-14 | Schmalbach-Lubeca AG | Process and device for applying liquid anticorrosive agents to corrosion-susceptible parts of packing vessels or parts thereof |
US4842887A (en) * | 1986-02-01 | 1989-06-27 | Schmalbach-Lubeca Ag | Method of and system for coating exposed can edges |
AU587890B2 (en) * | 1986-02-01 | 1989-08-31 | Schmalbach-Lubeca Ag | Method of and apparatus for applying liquid corrosion inhibitors to corrosion exposed regions of packaging containers or parts thereof |
EP0385624A1 (en) * | 1989-03-02 | 1990-09-05 | Cmb Foodcan Plc | An apparatus for, and a method of, printing a pattern on a container component |
US5029523A (en) * | 1989-03-02 | 1991-07-09 | Cmb Foodcan Plc | Apparatus for, and a method of, printing a pattern on a container component |
AU619945B2 (en) * | 1989-03-02 | 1992-02-06 | Cmb Foodcan Plc | An apparatus for, and a method of, printing a pattern on a container component |
EP0494363A2 (en) * | 1990-12-08 | 1992-07-15 | Francotyp-Postalia GmbH | Liquid jet printer for franking machine |
EP0494363A3 (en) * | 1990-12-08 | 1992-08-19 | Francotyp-Postalia Gmbh | Liquid jet printer for franking machine |
EP0761438A2 (en) * | 1995-09-05 | 1997-03-12 | Tampoprint GmbH | Device for applying designs |
EP1110740A1 (en) * | 1998-09-02 | 2001-06-27 | Star Micronics Co., Ltd. | Method and apparatus for printing on endless medium, method and apparatus for rotary printing, and rotary printing head |
EP1225053A2 (en) * | 2001-01-17 | 2002-07-24 | Dolphin Packaging limited | Printing process and apparatus |
EP1225053A3 (en) * | 2001-01-17 | 2003-05-14 | Dolphin Packaging limited | Printing process and apparatus |
US6578476B2 (en) * | 2001-03-05 | 2003-06-17 | Tlcd Corporation | Print product on demand |
WO2004009360A1 (en) * | 2002-07-22 | 2004-01-29 | Sealed Air Limited | Printing process and apparatus |
CN101547794B (en) * | 2006-08-16 | 2012-12-26 | Khs有限责任公司 | Method for circumferentially printing containers |
EP2479036A1 (en) | 2011-01-25 | 2012-07-25 | Krones AG | Method and device for printing containers |
EP2479037A1 (en) | 2011-01-25 | 2012-07-25 | Krones AG | Method and device for printing containers |
DE102011009393A1 (en) | 2011-01-25 | 2012-07-26 | Krones Aktiengesellschaft | Device for printing of containers such as beverage bottles and polyethylene terephthalate bottles on their surfaces, has rotating transport unit for container to be printed and for conveying container to printing station |
DE102011009391A1 (en) | 2011-01-25 | 2012-07-26 | Krones Aktiengesellschaft | Apparatus and method for printing on containers |
DE102011009395A1 (en) | 2011-01-25 | 2012-07-26 | Krones Aktiengesellschaft | Apparatus and method for printing on containers |
CN106470843A (en) * | 2014-07-11 | 2017-03-01 | 精工爱普生株式会社 | Recording equipment and recording method |
Also Published As
Publication number | Publication date |
---|---|
DK330286D0 (en) | 1986-07-11 |
DE3668799D1 (en) | 1990-03-15 |
ATE50167T1 (en) | 1990-02-15 |
DK330286A (en) | 1987-01-27 |
EP0209896A2 (en) | 1987-01-28 |
CA1277176C (en) | 1990-12-04 |
EP0209896A3 (en) | 1987-07-22 |
DE3526769A1 (en) | 1987-01-29 |
ES2000753A6 (en) | 1988-03-16 |
JPS6227170A (en) | 1987-02-05 |
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