EP3568303A1 - Machine d'impression au tampon - Google Patents

Machine d'impression au tampon

Info

Publication number
EP3568303A1
EP3568303A1 EP18705969.6A EP18705969A EP3568303A1 EP 3568303 A1 EP3568303 A1 EP 3568303A1 EP 18705969 A EP18705969 A EP 18705969A EP 3568303 A1 EP3568303 A1 EP 3568303A1
Authority
EP
European Patent Office
Prior art keywords
cliché
workpiece
pad
printing machine
measuring 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
EP18705969.6A
Other languages
German (de)
English (en)
Inventor
Andreas Hensel
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 EP3568303A1 publication Critical patent/EP3568303A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/001—Pad printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/14—Automatic control of tripping devices by feelers, photoelectric devices, pneumatic devices, or other detectors

Definitions

  • the present invention relates to a pad printing machine according to the
  • the invention relates in particular to a pad printing machine with at least one cliché recorded in a cliché carrier and at least one printing pad for receiving a printed image from the at least one cliché recorded in the cliché carrier.
  • the pad printing machine according to the invention is in particular as a
  • Such pad printing machines (English: ubend printing machine) have as a print head on a printing pad (English: transfer ubend), which is a stamp element made of elastic material.
  • a tampon printing machine can be designed for fully automatic operation or for manual operation.
  • the range of movement of the printhead or tampon carrier and the plate carrier is preferably shielded for safety reasons, so that no hand or the like can be clamped between them on the one hand and a workpiece carrier on the other hand.
  • pad printing machines which are designed for manual operation, with manual loading and
  • Pad printing machine can be switched on only if two remote control elements are operated simultaneously with both hands.
  • the invention enables the problem to be solved to provide a compact pad printing machine of the type mentioned above, on which various printing programs can be driven, and in which a change from a Beyakprogramm to another Betikprogramm in a simple and fast manner.
  • Pad printing machine according to the invention are specified in the dependent claims.
  • the pad printing machine is assigned an optical adjustment system which has a cliché measuring system designed as a measuring station for measuring the at least one cliché of the pad printing machine, wherein the cliché measuring system embodied as a measuring station has a stationary camera system with at least one camera is arranged stationary with respect to a cliché holder belonging to the cliché-surveying system.
  • the cliché measuring system embodied as a measuring station has a stationary camera system with at least one camera is arranged stationary with respect to a cliché holder belonging to the cliché-surveying system.
  • belonging to the cliché surveying cliché holder is separate from the
  • the cliché measuring system is designed to determine a local position of a cliché recorded on the cliché measuring system belonging to the cliché holder on the basis of image data taken with the aid of the at least one camera of the stationary camera system.
  • the cliché measuring system is designed to determine position tolerances of a cliché recorded on the cliché holder belonging to the cliché measuring system on the basis of the image data.
  • Pad printing machine is the at least one printing pad between a color receiving position and a color discharge position is movable, wherein the printing pad in its ink receiving position so in relation to the at least one recorded in the plate carrier of the pad printing machine
  • Clichés is positioned that through the printing pad a printed image of the at least one cliché is receivable, and wherein the printing pad in its ink dispensing position so with respect to a in a workpiece carrier of the
  • Tampon printing machine recorded and located in a printing station of the pad printing machine workpiece is positioned so that a previously recorded by the printing pad print image is transferable to the value piece.
  • the workpiece measuring system it is conceivable for the workpiece measuring system to have a stationary camera system with at least one camera which is arranged stationarily with respect to a printing station of the pad printing machine.
  • the workpiece carrier of the pad printing machine is located within the printing station in its color pickup position when the at least one print head with respect to this workpiece carrier in his
  • Ink dispensing position is located, in which case a previously received by the print head print image is transferable to the recorded from the workpiece carrier workpiece.
  • the workpiece carrier it is conceivable for the workpiece carrier to be movable from its ink receiving position into a loading / unloading position and vice versa, wherein in the loading / unloading position, a workpiece can preferably be positioned manually on the workpiece carrier or is preferably manually removable from the workpiece carrier.
  • the workpiece-measuring system of the optical adjustment system is adapted to measure a workpiece received in the workpiece carrier of the pad printing machine, for which purpose a stationary camera system with at least one camera is used, which and unloading the pad printing machine stationary.
  • the optical adjustment system further comprises a workpiece-measuring system
  • the workpiece-measuring system is formed, based on the recorded with the camera system of the workpiece-measuring system deviations of an actual position of the workpiece from a target Position.
  • the workpiece-measuring system is designed, depending on the detected position deviations corresponding
  • Workpiece carrier can be performed to accurately position a paint on the workpiece for each color.
  • the workpiece-measuring system it is conceivable to determine a local position of a workpiece received on the workpiece carrier by means of image data taken with the aid of the at least one camera of the stationary camera system of the workpiece-measuring system.
  • the recorded image data can also be used to position and manufacturing tolerances on the
  • Workpiece carrier recorded workpiece to determine.
  • this further comprises a positioning device for selectively or on-demand positioning of the at least one print head in its color dispensing position and / or in its color pickup position, wherein the positioning device is formed in the positioning of the print head in his
  • the pad printing machine according to the invention is therefore characterized in particular by the fact that camera systems are used to detect the position of clichés and workpieces. With the information thus obtained, both positional deviations of the plates and the workpieces can be determined. By calculating correction values, compensation movements can be carried out during the printing process in order to control the application of paint on the surface
  • Pad printing machine uses a stationary camera system for measuring the clichés. All clichés used by the pad printing machine are placed one after the other in the measuring station, whereby for each cliché after measuring, the associated cliché holder is assigned, in which the cliché used in the machine. The adjustment system thus knows the orientation of the cliché in the assigned cliché holder in the pad printing machine.
  • the camera system for the detection of the clichés is designed as an autonomous measuring station, which camera system can be arranged locally both within a machine frame of the pad printing machine, as well as externally.
  • An interface between the autonomous measuring station (camera system of the optical adjustment system) and the pad printing machine then provides the required measured values.
  • the optical adjustment system is particularly suitable for as
  • Tamper-type presses the adjustment system being usable both in machines with linear tampon movements (type MPA) and in machines with turrets arranged in the manner of a carousel (type M KM). Also the use of the optical adjustment system in linear transfer presses (type MLT) is possible. In this case, the workpiece is passed successively under several printing machines, each performing an application of paint.
  • Embodiment of the invention Tampondruckmasch described in detail.
  • FIG. 1 schematically in an isometric view an exemplary one
  • Embodiment of a pad printing machine with linear tampon movement (type MPA) running pad printing machine according to the invention
  • FIG. 2 schematically and in an isometric view the
  • FIG. 3 schematically shows a detail of FIG. 2 concerning the at the
  • the pad printing machine 100 shown schematically in the drawings according to the invention comprises a pad printing machine, which has at least one pad printing for printing a workpiece in one
  • the pad printing system 100 comprises a
  • Workpiece carrier 10 for holding a workpiece to be printed in a printable printing position in the printing station 40th
  • the workpiece carrier 10 may be associated with a positioning device, by which the workpiece carrier 10 together with a workpiece to be printed automatically successively positioned in each case one of at least two different printing positions in the same printing station to the workpiece successively to likewise at least two different Betiks kind imprint.
  • the pad printing machine 50 may in particular be designed to print the workpiece in question in the same printing station 40 successively in the different printing positions on the different printing parts.
  • the pad printing machine 50 may be formed to successively print the workpiece in question in one and the same printing position in a printing station 40.
  • a numerical controller is for numerical program control of the functions of the pad printing machine 50 and the functions of
  • the workpiece positioning device is designed to move the workpiece carrier 10 in at least two coordinate axes extending transversely to each other.
  • the coordinate axes are preferably in a common plane.
  • a cross slide unit having a longitudinal slide and a Quersch suffered.
  • the longitudinal slide is movable along a longitudinal coordinate axis and guided in a longitudinal guide, for example two guide rails.
  • the cross slide is along one Transverse coordinate axis movable and guided by a transverse guide, which are provided on the longitudinal slide.
  • the longitudinal guides and / or the transverse guides can rails, ribs, grooves
  • the longitudinal guides may be side edges of a machine frame; and the transverse guides may be side edges of the longitudinal slide.
  • the transverse coordinate axis extends transversely
  • Workpiece carrier 10 can be arranged on the cross slide.
  • the workpiece carrier 10 is connected to the cross slide by a hinge such that the workpiece carrier 10 can perform relative to m cross slide rotational movements, preferably about a horizontal axis of rotation.
  • the joint may also be configured to allow other or additional movements in other directions.
  • the Tam pondruckmaschine 50 also has a machine frame and at least one movable therein arranged printing unit support 20 on which at least one, preferably a plurality of pad printing 21 are arranged.
  • FIG. For example, Figure 2 shows four pad printing units 21. According to others
  • Embodiments are, for example, six pad printing units 21 or a different number.
  • the pad printing 21 are by moving the
  • Printing unit carrier 20 successively in the printing station 40 and then moved away from this, for printing the workpiece in the printing station 40.
  • the movements of the printing unit support 20 may be linear.
  • Pad printing machine 50 a carousel machine, wherein the
  • Printing unit carrier 20 is rotatable about a vertical axis of rotation to successively move the pad printing units 21 arranged thereon in the printing station 40 and again away therefrom, for printing the workpiece in the printing station 40th
  • the pad printing machine 50 is constructed from a Dahlzah l of series-arranged single-color pa Kunststoffwerke TAG, wherein a workpiece to be printed is successively fed to the individual monochrome pad printing.
  • Each pad printing unit 21 includes at least one pad carrier for holding a tampon 22 and a drive for moving up and down the
  • the pad printing machine 50 further has at least one cliché carrier 30 for holding a cliché 31 (also called printing plate).
  • Cliché carrier 30 is fixedly arranged together with the cliché 31, wherein a cliché carrier 30 associated with the ink pot by means of a drive (not shown) between a rear position and a front position in the Z direction is displaceable.
  • a cliché carrier 30 associated with the ink pot by means of a drive (not shown) between a rear position and a front position in the Z direction is displaceable.
  • a print image area of the plate 31 under the ink pot for receiving color in recessed areas of the printed image area.
  • the rear position of the paint pot is the provided with color print image area under the printing pad 22 so that the printing pad 22 by picking up and moving color and dam it the print image from the print image area of the plate 31 can take men.
  • the pad printing machine 50 has a plurality of plate carriers (here: exactly seven plate carriers 30) with the associated paint pot of each plate carrier 30 horizontally in Z-direction between a color pickup position of the plate 31 and a color discharge position of the
  • the corresponding color cup moves back and forth relative to the corresponding cliche 31 along the Z axis in the horizontal direction, the lower edge of the cup formed as a squeegee slides on the surface of the plate 31.
  • the color cup is open at the bottom to the surface of the plate 31 , so that the ink present in the paint cup on the surface of the plate 31st stands and can penetrate into a printed image which is formed in the surface of the plate 31 by at least one print image recess.
  • Print image pit is within the inner circumference of the paint cup when the cliché 31 is in the ink pickup position.
  • Print image indentation is in the color dispensing position under the as
  • Print pad 22 executed printhead, which is supported by a pad carrier.
  • the plate carrier 30 together with the plate 31 by means of a drive (not shown) displaceable between a rear position and a front position in the Z direction.
  • a drive (not shown) displaceable between a rear position and a front position in the Z direction.
  • the rear position is a print image area of the plate 31 under a paint pot for receiving color in recessed areas of the printed image area.
  • the front position the color-printed image area is located under the printing pad 22, so that the printing pad 22 by Ab- and
  • the cliché carrier 30 is then moved together with the cliché 31 by means of the drive (not shown) back to its rear position. Thereafter, the printing pad 22 can be moved by means of the drive to the printing station 40 and there down to the workpiece to be printed in order to transfer the color to the workpiece.
  • the printing pad 22 is moved back up again by the drive and the printing pad 22 can be moved again to the plate 31.
  • the respective paint cups can be held by a holding device in a defined cup positioning, the front and
  • all drives can be linear drives or rotary drives, for example electric motors or pneumatic or hydraulic drives
  • the tampon carrier is together with the printing pad 22, after the recording of ink from the print image recess of the plate 31, again upwardly movable to an intermediate position or preferably into one
  • the pad printing machine 50 shown schematically in the drawings of the pad printing machine according to the invention is designed as a machine with a linear tampon movement (type MPA).
  • the pad carrier is moved with the printing pad 22 along an X-axis horizontally in the printing station 40 and then along the Y-axis in a down
  • Printing position moves there to print the ink from the printing pad 22 on a workpiece.
  • the workpiece is carried by a workpiece carrier 10 and brought into a predetermined position and held there.
  • the predetermined position is a position of the workpiece, in which the correction values determined with the optical adjustment system 1 have already been taken into account.
  • the kbar in this context, it is, for example, if the
  • Workpiece carrier 10 is movable in the Y direction and is rotatable about a C axis to correct corresponding deviations in the Y direction and in the rotation, while the printing pad 22 corrects X values.
  • the workpiece carrier 10 may be formed in various ways and manner, for example for holding only a single workpiece or for
  • Mounting of a plurality of workpieces wherein the workpiece carrier 10 in a horizontal plane movable in a straight line or (as schematically indicated in Figure 2) may be arranged rotatably about a rotational axis.
  • the color transferred from the corresponding printing pad 22 to the workpiece has, in accordance with the at least one printed image depression of the printing plate 31, the form of a writing and / or a picture and / or a symbol and / or another marking.
  • an optical adjustment system 1 with two camera systems 2, 3 is used.
  • One of the two camera systems 2, 3 is part of a measuring station 45 and serves to detect the position of a cliché 31 inserted in the measuring station 45 in order to determine any positional tolerances of the cliché 31 inserted in the measuring station 45.
  • the other of the two camera systems 2, 3 detects the position of the inserted into the workpiece carrier 10 workpiece in the loading and unloading station 42 to determine any existing position and manufacturing tolerances of the workpiece.
  • Corresponding correction values are calculated from the determined values, wherein this is preferably carried out in a control unit which can be activated for the corresponding actuators.
  • a control unit which can be activated for the corresponding actuators.
  • Embodiment are for position detection in the measuring station 45, the clichés 31 provided with alignment marks. That assigned to the measuring station 45
  • Camera system 3 records the position of the adjustment marks and determines the position deviations for rotation and X and Y offsets.
  • the pad printing machine 50 is basically designed in the
  • Pad printing machine 50 As shown in the schematic illustration in FIG. 2 can be seen in the exemplary embodiment illustrated in the drawings Pad printing machine 50 according to the invention the individual clichés 31 side by side (ie, in the X direction) arranged.
  • the printheads (print pads 22) move horizontally on a gantry to the clichés 31 and to the workpiece.
  • Pad printing machine 50 with reference to the schematic representation in FIG. 2 described in more detail.
  • a workpiece to be printed on the loading and unloading station 42 of the machine is inserted into the workpiece holder of the workpiece carrier 10.
  • Workpiece holder detects the contours of the workpiece. Based on the image data recorded by the camera, a control unit calculates therefrom all position deviations from a desired position (rotation, as well as X and Y tolerances). The position deviations arise both from the different insertion position (rotation) during manual workpiece change, as well as from manufacturing tolerances in the production of the workpiece. Since the printed image is to be aligned exactly with respect to the workpiece, these tolerances must be compensated.
  • a pendulum axle pivots the two workpiece holders or
  • Workpiece carrier 10 by 180 °, so that the workpiece holder m is moved with the previously measured workpiece from the loading and unloading station 42 in the printing position.
  • the workpiece holder from the earlier heren printing position is now located at the loading and unloading station 42.
  • a previously printed workpiece can be removed and a new, unprinted workpiece can be inserted.
  • the workpiece in the Maschinen Swissaufnah me in printing position is printed during it.
  • the up to seven color separations from the doctor units are transferred by the two printing pads 22 on the two pad carriers or spillages to the workpiece located in the printing position.
  • the workpiece carrier 10 with the workpiece holder and the workpiece received therein can be moved in a rotation axis about the C-axis and in the Y-axis.
  • the two tamper carriers or spouts move in the X direction.
  • the position deviations from the desired position (rotation, as well as X and Y Tolerances) for each color separation individually compensated.
  • FIG. 3 shows the measuring station 45 in more detail.
  • each cliché 31 to be measured in the measuring station 45 is provided with two diagonally opposite reference marks 32
  • Reference marks 32 aligned.
  • Camera system 3 in the measuring station 45 can measure the position of the reference marks 32 exactly.
  • Tam plywood 50 must be calibrated once when the machine is commissioned. These measure the exact orientation of the axes to each other and the Drehpu surfaces of the workpiece holders.
  • These one-time machine calibration calibrations include axis calibration and pressure calibration.
  • Unloading station 42 a measuring plate with a reference image placed.
  • the machine then performs defined movements of the workpiece holder, which are detected by the camera system 2.
  • the orientations of the axes are determined. This process is carried out for each of the two Maschinen Industriesaufnah men, as meh rere workpiece holders are provided which - as shown in FIG. 2 - can be successively transferred from a loading and unloading station 42 in a printing station 45.
  • print operations on a smooth work piece are performed with a reference print image for each color separation.
  • the camera of the camera system 2 detects the position of the applied print image via the loading and unloading station 42.
  • Position deviations can be exactly determined between the individual color separations. So that all color separations are exactly superimposed, the necessary correction values are calculated and saved for each color separation. This process is performed for each of the two workpiece holders, if several Werk Anlagenaufnah men are provided, which - as shown in FIG. 2 - can be successively transferred from a loading and unloading station 42 in a printing station 45.
  • Print images for each doctor unit / plate carrier 30 known.
  • the diameter of the workpiece is entered in the system to determine the evaluation range of the camera image. After that, the print image is first printed with all colors on a smooth workpiece (without
  • the printed image is included as a reference and displayed on a screen.
  • the smooth workpiece is replaced by a workpiece with embossing.
  • the camera above the loading and unloading station 42 now displays the two images (the previously recorded reference image and the image of the unprinted, embossed workpiece) overlying.
  • the two images can be superimposed as well as the later print should be positioned on the workpiece.
  • the corrections made are the output values required for printing and are converted into position corrections for the machine axes and taken into account in the subsequent processes.
  • the clichés 31 can also be formed by the cliché carrier 30 itself, instead of being a separate element.
  • an upper surface of the disc carrier 30 is formed as a cliché surface, in which the at least one
  • Print image recess is formed.

Landscapes

  • Printing Methods (AREA)

Abstract

L'invention concerne une machine d'impression au tampon (50) comportant au moins un cliché (31), logé dans un support de cliché (30) et au moins un tampon d'impression (22), pour enregistrer une image d'impression à partir de l'au moins un cliché (31) logé dans le support de cliché (30). Le but de l'invention est de réaliser une machine d'impression au tampon la plus compact possible (50) sur laquelle des diverses applications d'impression peuvent être exécutées et dans lequel un remplacement d'une application d'impression contre une autre application d'impression est effectué de manière facile et rapide; selon l'invention la machine d'impression au tampon (50) est associée à un système de réglage (1) optique, lequel comporte un système de mesure de cliché conçu sous la forme d'une station de mesure (45), pour mesurer l'au moins un cliché d'impression (31) de la machine d'impression au tampon (50), ledit système de mesure de cliché conçu sous la forme d'une station de mesure (45) comportant un système de caméra (3) stationnaire pourvu d'au moins une caméra, laquelle est agencée de manière fixe par rapport à un port-cliché (46) faisant partie du système de mesure de cliché.
EP18705969.6A 2017-01-11 2018-01-09 Machine d'impression au tampon Pending EP3568303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017100423.8A DE102017100423A1 (de) 2017-01-11 2017-01-11 Tampondruckmaschine
PCT/IB2018/000070 WO2018130908A1 (fr) 2017-01-11 2018-01-09 Machine d'impression au tampon

Publications (1)

Publication Number Publication Date
EP3568303A1 true EP3568303A1 (fr) 2019-11-20

Family

ID=61244642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18705969.6A Pending EP3568303A1 (fr) 2017-01-11 2018-01-09 Machine d'impression au tampon

Country Status (3)

Country Link
EP (1) EP3568303A1 (fr)
DE (1) DE102017100423A1 (fr)
WO (1) WO2018130908A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509665A (zh) * 2019-10-09 2019-11-29 蓝思智能机器人(长沙)有限公司 一种移印机
CN112277447A (zh) * 2020-10-28 2021-01-29 广东创智智能装备有限公司 一种工件在线移印系统
BE1029347B1 (nl) * 2021-04-28 2022-12-05 Printing Int Productbedrukking

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005068199A1 (fr) * 2004-01-19 2005-07-28 Siemens Aktiengesellschaft Dispositif et procede de superposition precise
DE102005048467A1 (de) 2005-10-07 2007-04-12 Itw Morlock Gmbh Tampondruckmaschine
DE102005060550A1 (de) 2005-12-17 2007-06-28 Itw Morlock Gmbh Tampondruckmaschine
DE202006020754U1 (de) 2006-02-03 2010-01-07 Itw Morlock Gmbh Tampondruckanlage
DE102008029299B4 (de) * 2008-06-19 2012-02-16 Itw Morlock Gmbh Tampondruckmaschine
DE102008029300B4 (de) * 2008-06-19 2012-01-26 Itw Morlock Gmbh Tampondruckmaschine
EP2444248B1 (fr) * 2010-10-19 2013-07-03 Teca-Print AG Imprimante à tampon et procédé d'impression au moins en deux étapes d'un objet
EP2746050B1 (fr) * 2012-12-20 2017-02-01 Teca-Print AG Machine d'impression par tampographie et Procédé de fonctionnement d'une machine d'impression par tampographie
EP2842747B1 (fr) * 2013-09-02 2019-12-04 Teca-Print AG Machine et procédé d'impression à tampon rotatif pour l'impression d'une face extérieure essentiellement cylindrique d'un objet à imprimer

Also Published As

Publication number Publication date
DE102017100423A1 (de) 2018-07-12
WO2018130908A1 (fr) 2018-07-19

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