EP3865306A1 - Station d'alignement permettant d'aligner un objet d'impression à imprimer au moyen d'une machine d'impression, en particulier monnaie et procédé d'alignement d'un tel objet d'impression - Google Patents

Station d'alignement permettant d'aligner un objet d'impression à imprimer au moyen d'une machine d'impression, en particulier monnaie et procédé d'alignement d'un tel objet d'impression Download PDF

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Publication number
EP3865306A1
EP3865306A1 EP21155148.6A EP21155148A EP3865306A1 EP 3865306 A1 EP3865306 A1 EP 3865306A1 EP 21155148 A EP21155148 A EP 21155148A EP 3865306 A1 EP3865306 A1 EP 3865306A1
Authority
EP
European Patent Office
Prior art keywords
print object
alignment
optical detection
detection system
positioning system
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.)
Pending
Application number
EP21155148.6A
Other languages
German (de)
English (en)
Inventor
Manfred Bletscher
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of EP3865306A1 publication Critical patent/EP3865306A1/fr
Pending legal-status Critical Current

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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
    • B41J3/40731—Holders for objects, e. g. holders specially adapted to the shape of the object to be printed or adapted to hold several 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
    • B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • 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
    • B41J11/02—Platens
    • B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
    • 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
    • B41J3/28—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing downwardly on flat surfaces, e.g. of books, drawings, boxes, envelopes, e.g. flat-bed ink-jet printers

Definitions

  • the present invention relates generally to coins having a finished or treated surface and, more particularly, to methods of making such coins.
  • Coins are circular or in different shapes minted or poured means of payment, which are either in circulation (currency coins) or as commemorative coins in use. This also includes commemorative coins that are specially minted for the collector's market.
  • the term "coin” used herein is in no way intended to be restricted to legal tender, but also to include medals that can be produced by private individuals.
  • coins can be made from different coin metals, with metals such as gold and silver giving the coin a high value.
  • the type of coin metal or the composition of the alloy is a way of determining the value of a coin.
  • the type of minting or the number of copies of the coins can also have an influence on the value.
  • the type of motifs, which form the basis for the embossing or pressing, is almost innumerable and includes all kinds of representations, such as architectural buildings or famous personalities.
  • a print image is transferred directly from a file or a data stream from a computer to a printing machine without using a static printing form.
  • Electrophotography or inkjet printing are particularly suitable as digital printing.
  • digital printing is particularly suitable for working economically even with low print runs down to unique items.
  • the present invention is based on the object of specifying a solution with which coins can be precisely printed in an efficient and economical manner, in particular coins that have a filigree embossing or pressing, and in which the print image is precise with respect to the embossing or pressing is to be aligned.
  • the alignment station according to the invention is used for aligning a print object to be printed by means of a printing machine, in particular a coin, the alignment station having a specimen slide holder which is designed to hold a specimen slide with at least one print object (for example a coin) received and / or held by the specimen slide. to keep. So that a precise alignment of the print object picked up and / or held by the specimen can be carried out in a manner that is as automated as possible and, in particular, fully automated, the alignment station according to the invention furthermore has an optical detection system which is designed to contact-free a relative position and / or alignment of the at least one print object to detect the slide and / or a reference.
  • the alignment station has a positioning system which is designed to manipulate the at least one print object in such a way that the relative position and / or alignment of the print object to the specimen slide and / or to the reference of a previously defined or definable position (target position) and / or alignment (target alignment).
  • the alignment station enables an automated orientation and / or alignment of round coins and medals on the basis of their relief or on the basis of other references in order to correctly supply this position to a digital printing system, in particular for multicolor digital printing.
  • a drive preferably in the form of an XY linear drive
  • the optical detection system is assigned to the optical detection system in order to align the optical detection system over the at least one print object, if necessary and in particular vertically.
  • the positioning system is assigned a drive, preferably in the form of an XY linear drive, for the needs-based and in particular vertical alignment of the positioning system over the at least one print object.
  • the positioning system preferably has at least one manipulator, which is preferably movable in the Z direction relative to the at least one print object.
  • the at least one manipulator of the positioning system is designed to set a rotational alignment of the at least one print object with respect to the object carrier and / or with respect to the reference, if necessary.
  • Z direction used herein is to be understood as meaning the vertical, while the X and Y directions describe the corresponding coordinate axes in the horizontal.
  • a friction rotating station for example, can be used as a manipulator of the positioning system.
  • the invention is not restricted to such manipulators.
  • the optical detection system preferably has a camera, in particular a camera with integrated lighting, in order, if necessary, to detect the relative position and / or alignment of the at least one print object to the object carrier and / or to a reference.
  • the optical detection system has a CCD camera with integrated lighting, this CCD camera being designed in a state when it is aligned, in particular, perpendicular to the at least one print object, at least one area of the print object , such as to detect an area of the embossing and / or pressing of the coin.
  • a control device with an evaluation device is assigned to the optical detection system.
  • the control device is designed, if necessary, to control the drive assigned to the optical detection system in such a way that the optical detection system is aligned in particular perpendicularly with respect to the at least one print object.
  • that serves optical detection system In its aligned state, that serves optical detection system then to detect a position and / or position alignment of at least one area of the at least one print object.
  • the position position and / or position alignment is preferably detected in that at least one area of an embossing or pressing of the print object is recorded by the optical detection system.
  • the evaluation device is preferably designed to compare the position position and / or position alignment detected by the optical detection system, i.e. the area recorded by the optical detection system, for example the embossing or pressing of the print object, with a predetermined or definable target position and / or target alignment. This takes place, for example, in that the alignment of the embossing / pressing area of the print object recorded by the optical detection system is compared with a reference image of at least this embossing / pressing area stored in a storage device of the evaluation device.
  • the evaluation device calculates a movement to be performed on the at least one print object, in particular a rotational movement.
  • This calculated movement in particular a rotational movement, corresponds to the movement that is necessary and is to be executed by the positioning system so that an actual position and / or actual alignment of the at least one print object corresponds to the target position and / or target alignment.
  • the control device is designed to control the drive assigned to the positioning system, if necessary, in such a way that the positioning system is aligned in particular perpendicularly with respect to the at least one print object.
  • the control device is preferably also designed to control the positioning system in the aligned state in such a way that the movement calculated by the evaluation device, in particular rotational movement, is carried out on the at least one print object by the positioning system.
  • the specimen slide of the alignment station can be used for each object to be picked up and / or held by the specimen slide
  • Print object has a pivot bearing holder, in particular in the form of a recess adapted to the format of the at least one print object.
  • the pivot bearing holder is adapted in particular to the format of the at least one print object.
  • the object carrier is in particular assigned a locking device, such as, for example, in the form of a clamping bar or a clamping bar arrangement, in order to allow all degrees of freedom of movement of at least one of to lock the rotary bearing holder recorded print object.
  • the specimen slide has a multiplicity of pivot bearing mountings which are arranged next to one another along a line extending in the X direction. It is advisable here for the optical detection system and the positioning system to be assigned a common drive, preferably in the form of an XY linear drive, and / or for the optical detection system and the positioning system to be motion-coupled in such a way that a distance in the X direction between corresponds to the optical detection system and the positioning system at a distance between two adjacent pivot mounts.
  • a distance in the X direction between the optical detection system and the positioning system is selected such that in a state when the optical detection system is aligned in particular perpendicularly over a first pivot bearing holder of the slide, the Positioning system is aligned in particular perpendicularly over a preferably directly adjacent to the first pivot bearing bracket second pivot bearing bracket.
  • the invention relates not only to an alignment station of the type described above, but also to a method for aligning at least one print object to be printed by means of a printing machine, in particular a coin or medal. It is provided here that a specimen slide is initially positioned in a specimen slide holder of an alignment station, in particular an alignment station of the type according to the invention. It is preferably provided here that the specimen slide holder has a centering in order to position the specimen slide in the correct position.
  • the at least one print object is placed in a pivot bearing holder of the slide. This process step can be carried out manually, for example.
  • a relative position and / or alignment of the at least one print object to the object carrier or to a reference is detected.
  • at least part of an embossing and / or pressing of the at least one print object is recorded as an image file for this purpose.
  • the relative position and / or alignment of the at least one print object to the object carrier or to the reference i.e. in particular the image file that was recorded by the optical detection system, is then evaluated in order to calculate any movement to be carried out, in particular a rotary movement, of the at least one print object which is necessary so that the relative position and / or orientation of the at least one print object corresponds to a predetermined or definable nominal position and / or nominal orientation. Accordingly, the at least one print object is then manipulated in such a way that the position and / or orientation of the print object relative to the object carrier or to the reference corresponds to a position and / or orientation specified in advance.
  • Alignment station 1 shown schematically serves to align round print objects 2, in particular coins and / or medals, which are then printed by means of a printing machine.
  • the alignment station 1 has a slide holder 3 which is designed to hold a slide 4 with the print objects 2 picked up by the slide 4.
  • the slide holder 3 is assigned a centering 5 for this purpose in order to position the slide 4 in the correct position.
  • the exemplary alignment station 1 also has an optical detection system 8 which is designed to detect a relative position and / or alignment of the print objects 2 picked up by the specimen slide 4 to the specimen slide 4 and / or to a reference in a contactless manner.
  • the optical detection system 8 has a camera, such as, for example, a CCD camera, with integrated lighting.
  • a positioning system 9 is provided which is designed to manipulate the print objects 2 one after the other in such a way that their relative position and / or orientation to the object carrier 4 and / or to a reference corresponds to a predetermined or definable target position and / or target orientation.
  • the optical detection system 8 and the Positioning system 9 is assigned a common drive consisting of a Y drive 6 and an X drive 7. In this way, the optical detection system 8 and the positioning system 9 are coupled for movement in the XY direction.
  • the optical detection system 8 is an in FIG. 1 Not shown control device associated with an evaluation device.
  • the control device is designed, if necessary, to control the XY drive 6, 7 assigned to the optical acquisition system 8 in such a way that the optical acquisition system 8 is aligned one after the other, in particular perpendicularly with respect to the respective print objects 2.
  • the optical detection system 8 is designed to record an image of at least one area of the print object and in particular of at least one area of an embossing and / or pressing of the print object 2 in its state, in particular perpendicularly aligned with respect to a print object 2, in order to determine a corresponding position and position / or to detect the position alignment of the print object 2.
  • Evaluation device not shown, of the control device is designed to compare the image of the print object or the area of the embossing / pressing of the print object 2 recorded by the optical detection system with a reference image stored in a storage device of the evaluation device.
  • the position position and / or position orientation of the print object 2 detected by the optical detection system 8 is compared with a predetermined or definable nominal position and / or nominal orientation.
  • the evaluation device calculates a movement to be carried out on the print object 2, in particular a rotational movement Movement, in particular rotational movement, corresponds to a movement that is necessary and to be carried out by the positioning system 9 so that an actual position and / or actual alignment of the print object 2 corresponds to the predetermined target position and / or target alignment.
  • the control device of the alignment station 1 is also designed to control the X-Y drive 6, 7 if necessary in such a way that the positioning system 9 is aligned in particular perpendicularly with respect to a print object 2 to be manipulated.
  • the positioning system 9 has at least one manipulator, which is preferably movable in the Z direction relative to the print object 2 to be manipulated and is designed to set a rotational alignment of the print object 2 with the object carrier 4 and / or with a reference, if necessary.
  • the manipulator of the positioning system 9 can be, for example, a friction rotary manipulator. In the state of the positioning system 9 aligned with respect to the print object 2 to be manipulated, this is controlled by the control device of the alignment station 1 in such a way that the movement previously calculated by the evaluation device, in particular a rotational movement, is carried out on the corresponding print object 2.
  • the specimen slide 4 has for each print object 2 to be received by the specimen slide 4 a rotary bearing holder in the form of a recess adapted to the format of the print object 2.
  • the printed objects 2 are stored in such a way that - with the exception of a rotational movement about an axis of rotation in the Z direction and a translational movement in the direction of the axis of rotation - all other degrees of freedom of movement of the printed objects 2 are prevented.
  • the object carrier 4 is assigned a locking device 10 in order, if necessary, to lock all degrees of freedom of movement of the printed objects 2 received by the rotary bearing mounts.
  • This locking device 10 can be designed, for example, as a clamping strip arrangement.
  • the specimen slide 4 has a total of three rows running in the X direction, each with six rotary bearing mounts for the print objects 2 to be aligned.
  • a distance in the X direction between the optical detection system 8 and the positioning system 9 is selected such that in a state when the optical detection system 8 is in particular perpendicular aligned over a first pivot bearing holder of the specimen slide 4, the positioning system 9 is aligned in particular perpendicularly over a second pivot bearing holder that is preferably directly adjacent to the first pivot bearing holder.
  • an empty object carrier 4 is positioned in the correct position in the alignment station 1 by means of the centering device 5.
  • the print objects 2 to be printed later are placed, preferably manually, in the empty pivot bearing holders.
  • a central basic positioning of the print objects 2 takes place through the format-adapted recess (milling) of the pivot bearing mounts.
  • the optical detection system 8 is moved over the center of the individual print objects 2 and the position of the print objects 2 is stored.
  • the coupled positioning system 9 moves with the at least one manipulator, preferably designed as a friction rotation station, over the center of the print objects 2 and rotates them into the optimal printing position according to the values determined by the optical detection system 8 or the evaluation device assigned to the optical detection system 8 .
  • the locking device assigned to the slide 4 is then activated and any degrees of freedom of movement of the printed objects 2 relative to the slide 4 are frozen.
  • Alignment station 1 shown schematically, after an orientation of the first row of printed objects, the slide 4 is moved row by row and the printed objects 2 stored there are correspondingly aligned / oriented. After all the print objects 2 have been aligned and after the locking device 10 has been activated, the object carrier 4 can be removed from the centering device 5 and inserted into the printing machine for printing.
  • the invention is not limited to the in FIG. 1
  • the exemplary embodiment shown of the alignment station shown is limited, but also relates in particular to a system consisting of an alignment station 1 of the type described above and a Printing machine, in particular a digital printing machine such as an inkjet printer.
  • the object carrier 4 is assigned a mechanical lifter in order to lift the printed objects 2 out of the rotary bearing mounts of the object carrier 4 after the printing objects 2 have been printed in the printing machine.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)
EP21155148.6A 2020-02-12 2021-02-04 Station d'alignement permettant d'aligner un objet d'impression à imprimer au moyen d'une machine d'impression, en particulier monnaie et procédé d'alignement d'un tel objet d'impression Pending EP3865306A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020103650.7A DE102020103650A1 (de) 2020-02-12 2020-02-12 Ausrichtstation zum ausrichten eines mittels einer druckmaschine zu bedruckenden druckobjekts, insbesondere münze und verfahren zum ausrichten eines solchen druckobjekts

Publications (1)

Publication Number Publication Date
EP3865306A1 true EP3865306A1 (fr) 2021-08-18

Family

ID=74553612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21155148.6A Pending EP3865306A1 (fr) 2020-02-12 2021-02-04 Station d'alignement permettant d'aligner un objet d'impression à imprimer au moyen d'une machine d'impression, en particulier monnaie et procédé d'alignement d'un tel objet d'impression

Country Status (2)

Country Link
EP (1) EP3865306A1 (fr)
DE (1) DE102020103650A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080022866A1 (en) * 2006-07-26 2008-01-31 Heidelberger Druckmaschinen Ag Sheet punching and embossing machine with register orienting and method for operating a sheet punching and embossing machine
US20090110829A1 (en) * 2007-10-31 2009-04-30 Johnson L Urdenis System And Method For Marking Honeycombs And Associating Manufacturing Data Therewith
US20110100241A1 (en) * 2008-06-19 2011-05-05 Itw Morlock Gmbh Pad printing machine
US20130033544A1 (en) * 2010-02-17 2013-02-07 Thomas Peter Device and method for printing surfaces of material panels, especially wood panels, with a multi-colour image
US20140285825A1 (en) * 2013-03-22 2014-09-25 pita4 mobile LLC Mobile Printing Device
US10308037B2 (en) * 2017-04-03 2019-06-04 Xerox Corporation Thermoformed customized object holder for direct to object printers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2858151B2 (ja) 1990-02-23 1999-02-17 キヤノン株式会社 可動部材位置決め機構
DE102005034510B3 (de) 2005-07-20 2006-09-21 Till Westberg Vorrichtung und Verfahren zur Herstellung eines mit verschiedenen Belägen belegten Teiggebäcks sowie Teiggebäck
EP2679389B1 (fr) 2012-06-26 2015-01-07 Teca-Print AG Poste d'orientation et procédé d'orientation d'un moyen d'une presse par rapport à des objets à imprimer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080022866A1 (en) * 2006-07-26 2008-01-31 Heidelberger Druckmaschinen Ag Sheet punching and embossing machine with register orienting and method for operating a sheet punching and embossing machine
US20090110829A1 (en) * 2007-10-31 2009-04-30 Johnson L Urdenis System And Method For Marking Honeycombs And Associating Manufacturing Data Therewith
US20110100241A1 (en) * 2008-06-19 2011-05-05 Itw Morlock Gmbh Pad printing machine
US20130033544A1 (en) * 2010-02-17 2013-02-07 Thomas Peter Device and method for printing surfaces of material panels, especially wood panels, with a multi-colour image
US20140285825A1 (en) * 2013-03-22 2014-09-25 pita4 mobile LLC Mobile Printing Device
US10308037B2 (en) * 2017-04-03 2019-06-04 Xerox Corporation Thermoformed customized object holder for direct to object printers

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Publication number Publication date
DE102020103650A1 (de) 2021-08-12

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