EP3121017B1 - Machine pour imprimer simultanément sur deux surfaces parallèles - Google Patents

Machine pour imprimer simultanément sur deux surfaces parallèles Download PDF

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Publication number
EP3121017B1
EP3121017B1 EP16171933.1A EP16171933A EP3121017B1 EP 3121017 B1 EP3121017 B1 EP 3121017B1 EP 16171933 A EP16171933 A EP 16171933A EP 3121017 B1 EP3121017 B1 EP 3121017B1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
centring
printing
machine
parallel surfaces
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
EP16171933.1A
Other languages
German (de)
English (en)
Other versions
EP3121017A1 (fr
Inventor
Victor LIMIÑANA OROBITG
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.)
VL Limitronic SL
Original Assignee
VL Limitronic SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VL Limitronic SL filed Critical VL Limitronic SL
Publication of EP3121017A1 publication Critical patent/EP3121017A1/fr
Application granted granted Critical
Publication of EP3121017B1 publication Critical patent/EP3121017B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4073Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F17/00Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/24Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on flat surfaces of polyhedral articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices 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
    • B41J11/0045Guides for printing material
    • B41J11/0055Lateral guides, e.g. guides for preventing skewed conveyance of printing material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/001Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00Actions or mechanisms not otherwise provided for
    • B41J25/304Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/54Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
    • B41J3/543Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads

Definitions

  • the present invention describes a printer for simultaneously printing decorative elements, graphics or informative legends on two parallel surfaces of a three-dimensional object. Moreover, the printer that is the object of the invention can be used on a wide range of products.
  • printers that are able to print on both sides of a flat surface. These printers are aimed at printing bi-dimensional components, typically paper, and they have seen great improvements.
  • the printer In order to be able to adapt the printout to other surfaces, the printer must be readjusted beforehand.
  • the machine that is the object of the invention makes it possible to decorate and customise packaging to the highest level since it is possible to decorate pre-decorated packaging or boxes with specific graphics for different products, saving manufacturers from having to store multiple stocks and also giving them the capacity to work with smaller batches without having to use other customisation methods such as adhesive labels.
  • the present invention addresses these problems that still have not been addressed by the current state of the art by introducing a printer for printing simultaneously on two surfaces, with a high capacity to print objects and a high adaptability for printing objects of multiple formats thanks to its ability to modify the structure of the machine so that it can print on surfaces of any size or kind, in a simple and easy way.
  • a printer for printing simultaneously on two surfaces with a high capacity to print objects and a high adaptability for printing objects of multiple formats thanks to its ability to modify the structure of the machine so that it can print on surfaces of any size or kind, in a simple and easy way.
  • Document US4814795 discloses an ink jet head holder supported from a frame that includes a transversely movable rod supporting an ink jet print head with a similar print head holder on the opposite side of the frame.
  • a conveyor for conveying an object having opposed print-receiving surfaces between the print heads.
  • Longitudinal channels are supported by the frame on opposite sides of the conveyor.
  • the print heads are supported on the longitudinal channels and side guide rails are also supported on the channels.
  • the channels are laterally movable to vary the width of the path of packages on the conveyor.
  • the side guide rails are also adjustable laterally relative to the print heads.
  • the print heads have cam faces for contacting the packages at a predetermined transverse distance from the print head nozzles. Biasing means hold the print heads with the cam faces bearing against the print-receiving surfaces that are printed by ink from the nozzles.
  • Document EP1974928 discloses a device (1) that has a printer (10) i.e. ink-jet printer, imprinting a surface of a three-dimensional article e.g. plate, and a conveyor bringing about a relative movement between the printer and the article to be imprinted. A surface of the article to be imprinted is brought into a predetermined relative relationship to the printer by a positioning unit (30).
  • the printer has a set of printing units (12, 14) that are associated with respective stop elements e.g. stop rolls.
  • the positioning unit has two stop elements, where one of the stop elements is movable.
  • An independent claim is also included for a method for imprinting a container.
  • Document US5101224 discloses a pair of ink jet print heads that are arranged on opposite sides of a conveyor to apply ink markings to the opposed surfaces of material conveyed on the conveyor.
  • the print heads support ink jet nozzle blocks having at least one ink jet nozzle and are pivotally biased out over the conveyor in the path of the conveyed material.
  • a pair of cams positioned on opposite sides of the ink jet nozzle blocks maintain a critical spacing between the nozzle block and the surface of the material. Ramp surfaces and an exit cam control the rate at which the ink jet print heads are pivoted away from and toward the path of the conveyed material as the material is conveyed before the ink jet print heads.
  • the present invention describes a printer for printing simultaneously on two parallel surfaces of a three-dimensional object.
  • the printer comprises a conveyor belt, a centring station, a printing area and a control unit.
  • the conveyor belt is in charge of transporting the objects to be printed and comprises means for extension in order to modify the height of the conveyor belt in relation to the printheads.
  • the centring station features two centring structures placed symmetrically in relation to the longitudinal axis of the conveyor belt, which overlaps the conveyor belt along its length.
  • the function of the centring station is to collect the objects to be printed and centre them on the conveyor belt.
  • the centring structures comprise centring components on which the objects slide while transported by the conveyor belt.
  • the centring structures have the capacity to draw closer together or further apart by means of a fitting device that can be connected to each of the centring structures or to the assembly, so that both move simultaneously.
  • the centring structures also comprise means for extension in order to modify the height of the guiding components.
  • the printing area comprises two mobile bases, each of them comprising at least one printhead.
  • the mobile bases are located at each side of the conveyor belt and have the capacity to move in both the perpendicular directions to the longitudinal axis of the conveyor belt by means of an actuator and one lift respectively.
  • the assembly of the actuator and the lift can also operate on each of the mobile bases or on both bases at the same time if they are adequately connected.
  • the control unit comprises means to obtain data about the dimensions of the object to be printed, which have an effect on the actuation of the devices influencing the configuration of the centring station and the mobile bases. It also receives data from the photocells in order to activate the printheads and the light emitters.
  • the present invention describes a printer for printing simultaneously on the two lateral, parallel surfaces of a three-dimensional object.
  • the printer that is the object of the invention comprises a conveyor belt (1), preferably placed horizontally, that transports the objects about to be printed.
  • the objects enter the conveyor belt (1) through a centring station (2) that overlaps with it, and that comprises two centring structures (3) placed symmetrically in relation to the longitudinal axis of the conveyor belt (1).
  • the centring structures (3) are placed symmetrically in relation to the longitudinal axis of the conveyor belt (1) and separate significantly at the mouth in order to create a wider entrance point, so that the objects to be printed can easily enter the device.
  • Each of the centring structures (3) comprises a series of guiding components (4) to position the object to be printed.
  • the guiding components (4) located on the centring structures (3) can be, for example, horizontal rows with a plurality of rollers positioned with their axes in vertical position, so that the products slide laterally on the surface of the rollers while the conveyor belt (1) transports them along, centring them in the desired position.
  • several fitting devices (7) trigger the lineal movement of the centring structures (3) along guides, so that they can draw closer together or further apart depending on the transverse dimension existing between the surfaces of the object to be printed.
  • the centring structures (3) are joined together so that a single fitting device (7) operates on the centring structures (3), which move symmetrically.
  • the height of the structures (3) of the centring station (2) may be modified by extension means, which are not shown on the figures, and that modify the distance between the guiding components (4) along the length of several guides depending on the height of the object to be printed.
  • the printer that is the object of the invention comprises extension means, which are not shown on the figures, which modify the height of the conveyor belt (1) all along the guides, allowing the height of the conveyor belt (1) to be changed so that the printer is adaptable to objects of different heights.
  • the printer comprises a printing area where two groups of printheads (6) are located on each of the respective mobile bases (5). Even though each group can comprise a single printhead (6), they will preferably comprise several printheads aligned preferably in relation to the direction the conveyor belt (1) moves.
  • the mobile bases (5) are located facing each other at both sides of the conveyor belt (1), and although they are not necessarily symmetrical, they are separated symmetrically from the longitudinal axis of the conveyor belt (1).
  • each of the mobile bases (5) comprises an actuator (8) and a lift (9) in order to move the object along a series of guides on the two directions perpendicular to the longitudinal axis of the conveyor belt (1) respectively, these directions preferably being vertical and horizontal respectively.
  • the mobile bases (5) are joined together so that a single actuator (8) and a single lift (9) operate on the mobile bases (5), them moving symmetrically along each of the two directions in relation to the longitudinal axis of the conveyor belt (1).
  • the printer that is the object of the invention also comprises light emitters (10) that will preferably emit ultraviolet light and that will activate once the printout has been performed. They will preferably be located on each of the mobile bases (5).
  • the light emitters (10) are activated to cure the ink when printing on surfaces that are not very porous and when the ink requires an additional curing or drying treatment. For this reason, they should be located somewhere behind the groups of printheads (6) in relation to the direction the conveyor belt (1) moves.
  • the printer that is the object of the invention comprises a photocell (11) that detects the arrival of an object to be printed.
  • the photocell (11) is located on a lane, preferably parallel to the conveyor belt (1), and is attached to a mobile base (5) so that it can be moved in order to determine how close it needs to be in relation to the printheads (6). Even though a single photocell (11) is normally enough, two photocells (11) can be included, one on each side of the mobile base (5), in order to trigger the printheads (6) and the light emitter (10), which are located on the respective sides of the conveyor belt (1).
  • the transverse dimension of the object between the two parallel surfaces to be printed and the vertical length of the surfaces to be printed are key data for programming the printer that is the object of the invention, since they allow it to have the versatility it seeks.
  • This data is used to program the fitting devices (7) of the centring station (2), the means for moving the mobile bases (5), both the actuator (8) and the lift (9), and the means for extension in order to modify the height of the conveyor belt (1) or the existing centring structures (3) depending on the embodiment of the invention, so that they are positioned in the appropriate place for printing the object.
  • the printheads (6) also have the capacity to move vertically all along the height of the object to be printed, and they are also capable of printing at zero level of the object, which is the level of the conveyor belt (1). This is the reason why the width of the conveyor belt (1) is smaller than the width of the object to be printed, which protrudes from the conveyor belt (1) on both sides.
  • centring station (2) is located before the printheads (6) in relation to the movement of the conveyor belt (1), so that they do not interfere with each other.
  • the printheads (6) are aligned but positioned alternately so that there are two areas projecting ink at different heights.
  • the printer that is the object of the invention also comprises a control unit in charge of processing all the information regarding the positioning and activation of the different devices, which are controlled electronically.
  • the control unit comprises means to collect data about the object to be printed, primarily in relation to its dimensions. The information is then sent to the control unit by means of, for example, reading the dimensions of the object using a computer vision device, reading an identification code or sending the data from an external device or from a data base.
  • This information determines how the printer modifies its printing parameters in relation to the object about to be printed, regulating the devices in charge of positioning the centring station (2) and the mobile bases (5) and, more specifically, the fitting devices (7) of the centring structures (3), and the actuators (8) and the lifts (9) of the mobile bases (5), and the means for extending the height of the centring structures (3) or the conveyor belt (1).
  • the control unit is also connected to the light emitters (10), which will be triggered depending on the type of packaging to be printed, as described above, and the photocells (10), which will determine when the printheads (6) will be triggered.
  • the printer can be programmed to only modify the printed design in those cases when the same object is used for different situations such as, for example, printing the same message in different languages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Handling Of Sheets (AREA)

Claims (6)

  1. Machine pour imprimer simultanément sur deux surfaces parallèles d'un objet tridimensionnel, comprenant :
    - une bande transporteuse (1),
    - une station de centrage (2) comprenant deux structures de centrage (3) placées symétriquement par rapport à l'axe longitudinal de la bande transporteuse (1), qui chevauche la bande transporteuse (1) longitudinalement,
    - une zone d'impression comprenant deux bases mobiles (5), chaque base mobile (5) ayant au moins une tête d'impression (6) et étant située de chaque côté de la bande transporteuse (1),
    - deux dispositifs d'ajustement (7),
    - deux actionneurs (8),
    - deux élévateurs (9), et
    - une unité de commande,
    dans laquelle,
    - les structures de centrage (3) ont la capacité de se rapprocher ou de s'éloigner au moyen des deux dispositifs d'ajustement (7),
    - les bases mobiles (5) ont la capacité de se déplacer dans les deux directions perpendiculaires à l'axe longitudinal de la bande transporteuse (1) au moyen des deux actionneurs (8) et des deux élévateurs (9), respectivement, et
    - l'unité de commande comprend des moyens pour collecter des données concernant les dimensions de l'objet à imprimer, lesdites données déterminant la configuration de la station de centrage (2) et l'emplacement des bases mobiles (5) des têtes d'impression (6), les données collectées déterminant la manière dont l'imprimante modifie ses paramètres d'impression par rapport à l'objet qui va être imprimé, les paramètres d'impression régulant les dispositifs suivants :
    - les dispositifs d'ajustement (7) des structures de centrage (3),
    - les actionneurs (8) et les élévateurs (6) des bases mobiles (5), et
    - des moyens pour étendre la hauteur des structures de centrage (3) ou de la bande transporteuse (1) ;
    lesdits différents dispositifs étant commandés de manière électronique.
  2. Machine pour imprimer simultanément sur deux surfaces parallèles selon la revendication 1, caractérisée en ce qu'elle comprend au moins une photocellule (11) pour détecter un objet à imprimer.
  3. Machine pour imprimer simultanément sur deux surfaces parallèles selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'elle comprend au moins un émetteur de lumière (10) afin de sécher l'impression.
  4. Machine pour imprimer simultanément sur deux surfaces parallèles selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comprend des moyens d'extension afin de modifier la hauteur de composants de guidage (4).
  5. Machine pour imprimer simultanément sur deux surfaces parallèles selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comprend des moyens d'extension afin de modifier la hauteur de la bande transporteuse (1) par rapport aux têtes d'impression (6).
  6. Machine pour imprimer simultanément sur deux surfaces parallèles selon la revendication 2, caractérisée en ce que la au moins une photocellule (11) est chargée de déclencher les têtes d'impression (5) et les émetteurs de lumière (10).
EP16171933.1A 2015-06-26 2016-05-30 Machine pour imprimer simultanément sur deux surfaces parallèles Active EP3121017B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201530915A ES2550727B1 (es) 2015-06-26 2015-06-26 Máquina para imprimir simultáneamente en dos superficies paralelas

Publications (2)

Publication Number Publication Date
EP3121017A1 EP3121017A1 (fr) 2017-01-25
EP3121017B1 true EP3121017B1 (fr) 2019-11-20

Family

ID=54393229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16171933.1A Active EP3121017B1 (fr) 2015-06-26 2016-05-30 Machine pour imprimer simultanément sur deux surfaces parallèles

Country Status (2)

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EP (1) EP3121017B1 (fr)
ES (2) ES2550727B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11685157B2 (en) 2021-07-12 2023-06-27 Electronics For Imaging, Inc. Upwards jetting digital printing platform

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106585122B (zh) * 2016-11-30 2017-12-05 绍兴诚邦化纤有限公司 一种应用于自动生产线上的打码装置
CN107098154B (zh) * 2017-03-14 2019-04-26 肇庆国耀精密机械制造有限公司 一种自动化生产线上的打码检测装置
CN107901604A (zh) * 2017-11-26 2018-04-13 刘梦思 一种断路器生产线喷码装置
CN110482205A (zh) * 2019-08-26 2019-11-22 珠海格力智能装备有限公司 压紧机构及具有其的喷印设备
CN110421979B (zh) * 2019-08-28 2023-08-25 福州普洛机械制造有限公司 一种单双面铅笔滚筒打印机及其工作方法
KR102103133B1 (ko) * 2020-02-21 2020-04-21 김정열 가열 컨베이어 장치
CN117382317B (zh) * 2023-09-08 2024-03-19 山东福特尔新材料科技有限公司 一种多涂层块毯自动定位打印系统

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JPS5615358A (en) * 1979-07-19 1981-02-14 Muramatsu Tekkosho:Kk Printer for box
JPS58116155A (ja) * 1981-12-29 1983-07-11 Suketate Kamanaka 立体物の捺印装置
US4814795A (en) * 1987-05-01 1989-03-21 Marsh Company Ink jet head holder
US5101224A (en) * 1989-06-13 1992-03-31 Marsh Company Ink jet print head support
JPH04355137A (ja) * 1991-05-31 1992-12-09 Suzuki Motor Corp 印字システム
PL1974928T3 (pl) * 2007-03-27 2010-04-30 Homag Holzbearbeitungssysteme Ag Sposób drukowania na pojemniku trójwymiarowym

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11685157B2 (en) 2021-07-12 2023-06-27 Electronics For Imaging, Inc. Upwards jetting digital printing platform

Also Published As

Publication number Publication date
ES2769247T3 (es) 2020-06-25
EP3121017A1 (fr) 2017-01-25
ES2550727B1 (es) 2016-09-14
ES2550727A1 (es) 2015-11-11

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