EP3863856B1 - Screen printing device having a screen printing stencil as well as using method - Google Patents
Screen printing device having a screen printing stencil as well as using method Download PDFInfo
- Publication number
- EP3863856B1 EP3863856B1 EP19723409.9A EP19723409A EP3863856B1 EP 3863856 B1 EP3863856 B1 EP 3863856B1 EP 19723409 A EP19723409 A EP 19723409A EP 3863856 B1 EP3863856 B1 EP 3863856B1
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- EP
- European Patent Office
- Prior art keywords
- printing
- screen
- doctor blade
- printing device
- printed
- Prior art date
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- 238000007650 screen-printing Methods 0.000 title claims description 66
- 238000000034 method Methods 0.000 title claims description 26
- 238000007639 printing Methods 0.000 claims description 71
- 230000033001 locomotion Effects 0.000 claims description 16
- 238000010021 flat screen printing Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
- B41F15/423—Driving means for reciprocating squeegees
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0804—Machines for printing sheets
- B41F15/0813—Machines for printing sheets with flat screens
- B41F15/0818—Machines for printing sheets with flat screens with a stationary screen and a moving squeegee
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0863—Machines with a plurality of flat screens mounted on a turntable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces
- B41F15/0877—Machines for printing on articles having essentially cylindrical surfaces of varying cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/0895—Machines for printing on curved surfaces not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/16—Printing tables
- B41F15/18—Supports for workpieces
- B41F15/30—Supports for workpieces for articles with curved surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/44—Squeegees or doctors
- B41F15/46—Squeegees or doctors with two or more operative parts
Definitions
- the invention relates to a screen printing device with a screen printing stencil according to the preamble of claim 1 and a method for using the same.
- a screen printing device with at least two squeegee systems involved alternately in the printing process, the squeegee systems being guided in a circumferential manner by chains, with the respective squeegees being used alternately and being returned to their starting point after the printing process is complete.
- the squeegee run z. B. against each other by a constant phase angle of z. B. offset from 180 °.
- the squeegee blades can be guided by two endless chains arranged side by side and parallel to each other.
- a screen printing device with a screen printing stencil can be removed, with at least two squeegee systems each acting on this screen printing stencil being provided, with the at least two squeegee systems being arranged in the same printing process to apply printing ink to an object to be printed, each of these squeegee systems having at least one squeegee, each of these squeegees being arranged to sweep over the screen printing stencil, each of these squeegee systems being individually controlled by a control unit.
- a screen printing device with a printing screen, a printing squeegee and a support for a print material to be printed is known, wherein at least one articulated-arm robot is provided for moving the printing squeegee and/or the support relative to the printing screen.
- a screen printing device for printing curved surfaces is known, with a printing squeegee, a printing screen held in a screen frame and means for moving the printing squeegee, the screen frame being flexible at least in sections on at least one side.
- the DE 10 2005 006 732 A1 contains the reference to a printing squeegee attached to a squeegee holder, the squeegee holder being guided by guide arms, it being possible for these guide arms to be the arms of a free-form robot which is not further specified.
- the DE 44 31 596 C1 relates to a device for printing the surface of objects, with a printing device and two mutually independent compound slides which are opposite one another in relation to a central plane and can be moved parallel to one another, each of which has holders for receiving and handling the objects during the printing process, which project into the central plane lying between the planes of movement of the two compound slides and cover one and the same field of motion in this plane and can be moved with the aid of the cross slides in such a way that they pick up the objects to be printed directly from a feed conveyor, feed them to the printing device and, after printing, set them down on a discharge conveyor.
- This device can be designed as a screen printing machine.
- the DE 11 2012 005 138 T5 relates to a mask holder for holding a mask to be brought into contact with a substrate in a screen printing machine, the mask holder comprising: right and left side support parts that support both the right and left sides of the mask set horizontally from the front; an actuator capable of a moving operation in a front-back direction with respect to the right and left side support members; a rod member provided so as to extend along a lateral portion of the right and left side support members in the front-rear direction such that a front end of the rod member is connected to the operating member; a trailing edge stopper which is connected to a rear end of the rod member and is moved in the front-rear direction by the rod member by the moving operation in the front-back direction with respect to the right and left side support members by the operating member and by the fixing operation of the rod member is fixed to the right and left side support parts by the operating member on the right and left side support parts and which is abutted against a rear edge of the mask whose right and left sides are
- the WO 2008/083257 A2 relates to an apparatus for printing designs or images on a small or limited area of a substrate.
- the apparatus includes a screen printing assembly, a print head, and a guide assembly.
- a squeegee and a flood bar of the printhead are positioned at a predetermined position.
- the invention is based on the object of creating a screen printing device with a screen printing stencil, wherein the use of at least two squeegee systems each acting on this screen printing stencil is flexibly adapted or at least adaptable to the object to be printed.
- a screen printing stencil 01 in particular a flat printing screen stencil, is in a z. B. stationarily arranged preferably rectangular in particular rigid frame 02 and z. B. arranged in a linear printing machine or in a rotary table printing machine.
- a linear printing machine having a screen printing device is e.g. B. from the DE 10 2017 214 073 A1 known.
- a rotary table printing machine having a screen printing device is e.g. B. from the EP 2 995 453 A1 known. Both types of printing machine are used to print objects 03, which z. B.
- the object 03 to be printed is usually stored in a transport system and is guided through the printing machine by means of the transport system, with the object to be printed 03 is arranged at least briefly on the screen printing stencil 01 by the relevant transport system during the printing process, ie is positioned there, preferably below the screen printing stencil 01.
- the lateral surface of the relevant in the printing process z. B. is printed on an object 03 rotating about its longitudinal axis 24 in that the object 03 to be printed is unrolled in contact with the screen printing stencil 01.
- a larger number of objects 03 are preferably printed sequentially by the screen printing device, e.g.
- the relevant screen printing device in a linear printing machine or in a rotary table printing machine.
- the screen printing device is working in an industrial printing process for printing mass-produced articles, in particular round bodies 03 or hollow bodies 03, e.g. B. the respective lateral surface of bottles made of glass or plastic, preferably bottles for beverages or cosmetics.
- each doctor blade systems 04; 06 in each case at least one squeegee 07; 08, each of these squeegees 07; 08 is arranged sweeping over the screen printing stencil 01.
- Each of these doctor blades 07; 08 thus performs a relative movement with respect to the screen printing stencil 01, which is preferably arranged in a stationary manner.
- the at least one squeegee 07; 08 of each of the squeegee systems 04; 06 is in a plane E1; E2 out, these levels E1; E2 spaced apart and arranged parallel to each other.
- the at least one squeegee 07; 08 of each of the squeegee systems 04; 06 is in particular in a vertical plane E1; E2 led.
- the respective squeegee 07; 08 each of these squeegee systems 04; 06 is each of a robot 09; 11 out or moved, with one - in the 2 indicated - trajectory 21 of the doctor blade 07 in question; 08 of each squeegee system 04; 06 is freely programmed in each case, which means that a respective at least two-dimensional movement path 21 of the doctor blade 07; 08 of each squeegee system 04; 06 each by a controller of the relevant robot 09; 11 is fixed.
- the respective path of movement 21 of the doctor blade 07; 08 of the squeegee system in question 04; 06 is programmed as a function of a contour of the object 03 to be printed with this screen printing device, ie set to the respective squeegee 07; 08, particularly if the contour of the object 03 to be printed is uneven or discontinuous, the screen printing stencil 01 is positioned selectively, i.e. only at selected positions of a print image to be applied, and the robots 09; 11 to be painted over the screen printing template 01.
- the Robots 09; 11 are each designed as a parallel-arm robot with rod kinematics or as a so-called delta robot 09; 11 or as a robot with delta kinematics.
- Delta Robot 09; 11 have several, preferably at least three arms 12; 13, which by means of joints, in particular universal joints, with a common base 14; 16 are connected, the shape of these arms 12; 13 remind of the Greek letter delta.
- the axes of a spider-like delta robot 09; 11 form a closed kinematic chain in their interaction.
- the base 14; 16 of the respective delta robot 09; 11 is above the moving parts of the relevant delta robot 09; 11 arranged in particular stationary, ie z. B. on a mounting frame 17 of a linear printing machine or a rotary table printing machine.
- From base 14; 16 extend the plurality, preferably at least three arms 12; 13, in particular articulated arms 12; 13 each down, i. H. down.
- the lower ends of these arms 12; 13 are in turn compared to the respective base 14; 16 smaller in area, z. B. triangular or square platform 18; 19, the so-called gripper platform.
- the respective squeegee 07; 08 of each of the squeegee systems 04; 06 is connected to the respective arms 12; 13 moving platform 18; 19 and is therefore connected by the respective movement of the relevant platform 18; 19 out in their respective movement behavior.
- the drive technology is the following: If at least one motor 22, in particular electric, controlled by the control unit; 23, which is in the base 14; 16 is located, the respective axis of at least one of the articulated arms 12; 13 drives, the platform 18 arranged below moves; 19 along X and/or Y and/or Z traverse paths, ie along one-dimensional or two-dimensional or three-dimensional traverse paths - visually on the sides of a parallelogram.
- delta robots 09; 11 also perform rotational movements.
- the articulated arms 12; 13 of robots 09; 11 of this type can be driven, ie moved, by a linear drive and/or by a rotary drive.
- the squeegee drive of the screen printing device is controlled by means of a delta robot 09; 11 to train.
- This screen printing device is used in particular for printing objects 03 designed as a round body 03 or as a hollow body 03.
- a linear printing machine or a rotary table printing machine is provided with at least one screen printing device having the features described above.
- a squeegee drive by means of controlled robots 09; 11 is very precise and allows individual adjustment of a squeegee pressure and/or a squeegee position and/or a squeegee speed.
- an object 03 to be printed is first measured, at least in terms of its contour, after which the respective movement path 21 of the respective squeegee 07; 08 of each squeegee system 04; 06 is programmed and executed respectively. It can be provided that the relevant doctor blades 07; 08 different squeegee systems 04, but involved in the same printing process; 06 alternately or with a time delay be used.
- a robot 09 designed as a parallel-arm robot with rod kinematics or as a delta robot; 11 has the advantage over known, in particular industrially used, articulated-arm robots that it enables the circulation speeds required for printing mass-produced articles in the first place, with these circulation speeds usually being in the range of up to three cycles per second.
- Articulated arm systems based on the design of an industrial robot are not designed for this and are therefore not suitable for the use intended according to the invention.
- the comprehensive spatial flexibility of handling offered by articulated arm systems is not an advantage for the present application in a screen printing device, in particular in a screen printing device arranged in a linear printing machine or rotary table printing machine, but on the contrary leads to considerable limitations in the dynamics due to the masses to be moved in articulated arm systems .
- the free programmability of a robot according to the invention solves a problem in comparison to squeegee systems known from the prior art described in the introduction, which lies in the high material stress on the screen fabric in the printing process.
- Conventional systems such as B. in the DE 20 20 424 A described chain system, are characterized in that the same point loading of the screen fabric always occurs at the place where the squeegee is inserted.
- the screen typically breaks and thus the production carried out with the screen printing device is interrupted.
- One of a robot A guided squeegee system makes it possible to vary the squeegee insertion point geometrically within a zone defined with regard to the screen printing stencil, with the otherwise identical function of the squeegee system (e.g. with regard to register maintenance), and thus achieve more even fabric loading and a longer screen service life.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
Description
Die Erfindung betrifft eine Siebdruckvorrichtung mit einer Siebdruckschablone gemäß dem Oberbegriff des Anspruches 1 sowie ein Verfahren zur Verwendung derselben.The invention relates to a screen printing device with a screen printing stencil according to the preamble of claim 1 and a method for using the same.
Durch die
Der
Durch die
Aus der
Die
Die
Der Erfindung liegt die Aufgabe zugrunde, eine Siebdruckvorrichtung mit einer Siebdruckschablone zu schaffen, wobei ein Einsatz von mindestens zwei jeweils auf diese Siebdruckschablone wirkenden Rakelsystemen flexibel an den zu bedruckenden Gegenstand angepasst oder zumindest anpassbar ist.The invention is based on the object of creating a screen printing device with a screen printing stencil, wherein the use of at least two squeegee systems each acting on this screen printing stencil is flexibly adapted or at least adaptable to the object to be printed.
Die Aufgabe wird erfindungsgemäß durch eine Vorrichtung bzw. ein Verfahren gemäß Anspruch 1 bzw. 8 gelöst. Die abhängigen Ansprüche betreffen vorteilhafte Ausgestaltungen und/oder Weiterbildungen der gefundenen Lösung.The object is achieved according to the invention by a device and a method according to claims 1 and 8, respectively. The dependent claims relate to advantageous refinements and/or developments of the solution found.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Rakel in ihrer jeweiligen Bewegung artikel-individuell geführt werden können. Auch andere spezifische Bewegungen, die z. B. im unmittelbaren Anschluss nach dem eigentlichen Druckprozess erfolgen, sind durch entsprechende Programmierung der Roboter möglich. Somit ergeben sich für die am Druckprozess beteiligten Rakel voneinander unabhängige individuelle Bewegungsabläufe jeweils ohne eine durch ein Führungssystem starr vorgegebene Bewegungsbahn und auch ohne eine z. B. mechanische Zwangskopplung bei einer gleichzeitigen Verwendung von mehreren Rakeln. Gerade für das Bedrucken von Massenartikeln ist es auch vorteilhaft, dass die Zeit zwischen zwei Druckvorgängen verringert werden kann, weil z. B. Wartezeiten verkürzt werden oder entfallen.The advantages that can be achieved with the invention consist in particular in the fact that the respective movement of the squeegees can be guided individually for each article. Also other specific movements, e.g. B. immediately after the actual printing process, are possible through appropriate programming of the robot. This results in independent, individual movement sequences for the squeegees involved in the printing process, each without a trajectory rigidly predetermined by a guide system and also without a z. B. mechanical forced coupling with a simultaneous use of several doctor blades. Especially for the printing of mass-produced items, it is also advantageous that the time between two printing processes can be reduced, because e.g. B. Waiting times can be shortened or eliminated.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher beschrieben.An embodiment of the invention is shown in the drawings and is described in more detail below.
Es zeigen:
- Fig. 1
- eine erste Variante einer Siebdruckvorrichtung;
- Fig. 2
- eine zweite Variante der Siebdruckvorrichtung.
- 1
- a first variant of a screen printing device;
- 2
- a second variant of the screen printing device.
Die
Die jeweilige Rakel 07; 08 jedes dieser Rakelsysteme 04; 06 ist jeweils von einem Roboter 09; 11 geführt bzw. bewegt, wobei eine - in der
Die Roboter 09; 11 sind jeweils als ein Parallelarmroboter mit Stabkinematik oder als ein sogenannter Delta-Roboter 09; 11 bzw. als ein Roboter mit Deltakinematik ausgebildet. Delta-Roboter 09; 11 weisen mehrere, vorzugsweise mindestens drei Arme 12; 13 auf, die mittels Gelenken, insbesondere Universalgelenken mit einer gemeinsamen Basis 14; 16 verbunden sind, wobei die Form dieser Arme 12; 13 an den griechischen Buchstaben Delta erinnern. Die Achsen eines spinnenartigen Delta-Roboters 09; 11 bilden in ihrem Zusammenspiel eine geschlossene kinematische Kette. Die Basis 14; 16 des jeweiligen Delta-Roboters 09; 11 ist jeweils oberhalb der sich bewegenden Teile des betreffenden Delta-Roboters 09; 11 insbesondere ortsfest angeordnet, also z. B. an einem Montagerahmen 17 einer Lineardruckmaschine oder einer Rundtischdruckmaschine. Von der Basis 14; 16 erstrecken sich die mehreren, vorzugsweise mindestens drei Arme 12; 13, insbesondere Gelenkarme 12; 13 jeweils nach unten, d. h. abwärts. Die unteren Enden dieser Arme 12; 13 sind ihrerseits mit einer im Vergleich zur jeweiligen Basis 14; 16 flächenmäßig kleineren, z. B. dreieckigen oder viereckigen Plattform 18; 19, der sogenannten Greiferplattform verbunden. Die jeweilige Rakel 07; 08 von jedem der jeweils auf die Siebdruckschablone 01 wirkenden Rakelsysteme 04; 06 ist mit der jeweiligen jeweils von den betreffenden Armen 12; 13 bewegten Plattform 18; 19 verbunden und wird daher durch die jeweilige Bewegung der betreffenden Plattform 18; 19 in ihrem jeweiligen Bewegungsverhalten geführt.The Robots 09; 11 are each designed as a parallel-arm robot with rod kinematics or as a so-called
Bei der vorgenannten Art von Roboter 09; 11 ist die Antriebstechnik folgende:
Wenn mindestens ein insbesondere elektrischer von der Steuereinheit gesteuerter Motor 22; 23, welcher sich in der Basis 14; 16 befindet, die jeweilige Achse von mindestens einem der Gelenkarme 12; 13 antreibt, bewegt sich die unten angeordnete Plattform 18; 19 entlang von X- und/oder Y- und/oder Z-Verfahrwegen, d. h. entlang von eindimensionalen oder zweidimensionalen oder dreidimensionalen Verfahrwegen - visuell auf den Seiten eines Parallelogramms. Je nach der Anzahl der Freiheitsgrade können Delta-Roboter 09; 11 auch Rotationsbewegungen ausführen. Die Gelenkarme 12; 13 von Robotern 09; 11 dieser Bauart können von einem linearen Antrieb und/oder von einem Drehantrieb angetrieben, d. h. bewegt werden. Da der jeweilige Antrieb oder Motor 22; 23 für die Gelenkarme 12; 13 jeweils in der betreffenden Basis 14; 16 angeordnet ist, weisen die Gelenkarme 12; 13 der vorgeschlagenen Roboter 09; 11 selbst keinen von der Steuereinheit gesteuerten Antrieb oder Motor 22; 23 auf. Die Gelenkarme 12; 13 weisen daher nur eine vergleichsweise geringe Masse und/oder Trägheit auf.In the aforementioned type of
If at least one
Es wird erfindungsgemäß vorgesehen, den Rakelantrieb der Siebdruckvorrichtung mittels Delta-Roboter 09; 11 auszubilden. Diese Siebdruckvorrichtung wird insbesondere zum Bedrucken von jeweils als ein Rundkörper 03 oder als ein Hohlkörper 03 ausgebildeten Gegenständen 03 verwendet. In einer sehr vorteilhaften Ausführungsform ist vorgesehen, eine Lineardruckmaschine oder eine Rundtischdruckmaschine jeweils mit mindestens einer Siebdruckvorrichtung mit den zuvor beschriebenen Merkmalen auszubilden.According to the invention, the squeegee drive of the screen printing device is controlled by means of a
Ein Rakelantrieb mittels gesteuerter Roboter 09; 11 ist sehr präzise und gestattet eine individuelle Einstellung von einem Rakeldruck und/oder einer Rakelposition und/oder einer Rakelgeschwindigkeit. In vorteilhafter Weise wird ein zu bedruckender Gegenstand 03 zuerst zumindest in seiner Kontur vermessen, wonach dann in Abhängigkeit vom Messergebnis die jeweilige Bewegungsbahn 21 der betreffenden Rakel 07; 08 eines jeden Rakelsystems 04; 06 jeweils programmiert und ausgeführt wird. Dabei kann vorgesehen sein, dass die betreffenden Rakel 07; 08 unterschiedlicher, aber am selben Druckprozess beteiligter Rakelsysteme 04; 06 jeweils wechselweise oder zeitversetzt zum Einsatz gebracht werden.A squeegee drive by means of controlled
Ein als Parallelarmroboter mit Stabkinematik oder als Delta-Roboter ausgebildeter Roboter 09; 11 hat gegenüber bekannten insbesondere industriell genutzten Gelenkarmrobotern den Vorzug, die zum Bedrucken von Massenartikeln geforderten Umlaufgeschwindigkeiten überhaupt erst zu ermöglichen, wobei diese Umlaufgeschwindigkeiten üblicherweise im Bereich von bis zu drei Zyklen pro Sekunde liegen. Hierfür sind Gelenkarmsysteme nach Bauart eines Industrieroboters nicht ausgelegt und deshalb für die erfindungsgemäß beabsichtigte Verwendung nicht geeignet. Die von Gelenkarmsystemen gebotene umfassende räumliche Flexibilität der Handhabung ist für den hier vorliegenden Einsatzzweck in einer Siebdruckvorrichtung, insbesondere in einer in einer Lineardruckmaschine oder Rundtischdruckmaschine angeordneten Siebdruckvorrichtung kein Vorzug, sondern führt ganz im Gegenteil aufgrund der bei Gelenkarmsystemen zu bewegenden Massen zu erheblichen Einschränkungen in der Dynamik. Ganz anders ist der Sachverhalt bei einem Parallelarmroboter mit Stabkinematik oder bei einem Delta-Roboter. Dadurch, dass bei einem Parallelarmroboter mit Stabkinematik oder bei einem Delta-Roboter die jeweiligen Antriebe außerhalb der Armkinematik angeordnet sind, haben diese Parallelkinematiken nur geringe bewegte Massen und können deshalb die erforderliche sehr hohe Geschwindigkeit und Dynamik erreichen.A
Ferner löst die freie Programmierbarkeit eines erfindungsgemäßen Roboters gegenüber aus dem einleitend beschriebenen Stand der Technik bekannten Rakelsystemen ein Problem, welches in der hohen Materialbelastung des Siebgewebes im Druckprozess liegt. Konventionelle Systeme, wie das z. B. in der
- 0101
- Siebdruckschablonescreen printing stencil
- 0202
- Rahmenframe
- 0303
- Gegenstand; HohlkörperObject; hollow body
- 0404
- Rakelsystemsqueegee system
- 0606
- Rakelsystemsqueegee system
- 0707
- Rakelsqueegee
- 0808
- Rakelsqueegee
- 0909
- Roboter; Delta-RoboterRobot; Delta robot
- 1111
- Roboter; Delta-RoboterRobot; Delta robot
- 1212
- Arm; GelenkarmPoor; articulated arm
- 1313
- Arm; GelenkarmPoor; articulated arm
- 1414
- BasisBase
- 1616
- BasisBase
- 1717
- Montagerahmenmounting frame
- 1818
- Plattformplatform
- 1919
- Plattformplatform
- 2121
- Bewegungsbahntrajectory
- 2222
- Motorengine
- 2323
- Motorengine
- 2424
- Längsachselongitudinal axis
- E1E1
- Ebenelevel
- E2E2
- Ebenelevel
Claims (15)
- A screen-printing device having a screen-printing stencil (01), wherein at least two doctor blade systems (04; 06) respectively acting on this screen-printing stencil (01) are provided, wherein in a same printing process the at least two doctor blade systems (04; 06) are arranged respectively applying printing ink to an object (03) to be printed, wherein each of these doctor blade systems (04; 06) respectively has at least one doctor blade (07; 08), wherein one is arranged to sweep over each of these doctor blade systems (04; 06) via the screen-printing stencil (01), wherein each of these doctor blade systems (04; 06) is individually controlled by a control unit, characterized in that the at least one doctor blade (07; 08) of each of these doctor blade systems (04; 06) is respectively moved by a robot (09; 11), wherein a respective at least two-dimensional motion path (21) of the respective doctor blade (07; 08) of each doctor blade system (04; 06) is respectively freely programmed and established by the controller of the relevant robot (09; 11), wherein the robots (09; 11) are each parallel arm robots with rod kinematics.
- The screen-printing device according to claim 1, characterized in that the respective motion path (21) of the respective doctor blade (07; 08) of each doctor blade system (04; 06) is established depending on a contour of the object (03) to be printed with this screen-printing device.
- The screen-printing device according to claim 1 or 2, characterized in that the screen-printing stencil (01) is configured as a flat screen-printing stencil and/or is enclosed in a stationary frame (02).
- The screen-printing device according to claim 1 or 2 or 3, characterized in that the robots (09; 11) each have several arms (12; 13), wherein the arms (12; 13) of the respective robot (09; 11) are respectively connected by means of hinges to a same base (14; 16), wherein the relevant base (14; 16) of the respective robot (09; 11) is respectively arranged above the moving parts of the relevant robot (09; 11) and the arms (12; 13) respectively extend downward from the relevant base (14; 16), wherein the lower ends of these arms (12; 13) for their part are connected to a platform (18; 19) that is smaller compared to the respective base (14; 16), wherein the at least one doctor blade (07; 08) of each of the respective doctor blade systems (04; 06) acting on the screen-printing stencil (01) is respectively connected to the respective platform (18; 19) moved by the relevant arms (12; 13), whereby at least one motor (22; 23) controlled by the control unit is respectively arranged as a drive for the movement to be executed only in the relevant base (14; 16) by at least one of the arms (12; 13) of the respective robot (09; 11).
- The screen-printing device according to claim 1 or 2 or 3 or 4, characterized in that the respective at least one doctor blade (07; 08) is respectively guided by each of the doctor blade systems (04; 06) on a plane (E1; E2), wherein these planes (E1; E2) are spaced apart from one another and arranged parallel to one another.
- The screen-printing device according to claim 5, characterized in that, with respect to a longitudinal axis (24) of the object (03) to be printed, the planes (E1; E2) parallel to each other are arranged one after the other on the same longitudinal axis.
- The screen-printing device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that a doctor blade pressure and/or a doctor blade position and/or a doctor blade speed are individually set in each of the doctor blade systems (04; 06).
- A method for using a screen-printing device according to at least one of claims 1 to 7, characterized in that the screen-printing device is used to print at least one respective object (03) respectively configured as a hollow body (03) or round body (03).
- The method according to claim 8, characterized in that the at least one object (03) to be printed is first measured at least in its contour, after which then, depending on the measurement result, the respective motion path (21) of the respective doctor blade (07; 08) of each doctor blade system (04; 06) is respectively established in a program and the relevant robot (09; 11) is controlled by the control unit according to the programmatic establishment.
- The method according to claim 8 or 9, characterized in that, in the event of an uneven or unsteady contour profile of the object to be printed (03), the respective doctor blade (07; 08) of each doctor blade system (04; 06) is only thrown on at selected positions of a printed image to be applied to the screen-printing stencil (01) and arranged to sweep over this screen-printing stencil (01).
- The method according to claim 8 or 9 or 10, characterized in that the respective doctor blades (07; 08) of different doctor blade systems (04; 06) are respectively used alternately or in staggered manner in the printing process.
- A linear printing press or rotary table printing machine, in each case having at least one screen-printing device, in each case according to at least one of claims 1 to 7 and in each case having a transport system, wherein the at least one object (03) to be printed is respectively stored in the transport system and is guided by means of the transport system through the printing press, wherein the relevant object (03) to be printed in the printing process is arranged at least for a short period at the screen-printing stencil (01) of the relevant screen-printing device arranged in the printing press by the transport system.
- The linear printing press or rotary table printing machine according to claim 12, characterized in that the object (03) to be printed in the printing process is arranged by the transport system below the screen-printing stencil (01) of the relevant screen-printing device arranged in the printing press.
- The linear printing press or rotary table printing machine according to claim 12 or 13, characterized in that the respective base (14; 16) of the relevant robot (09; 11) is respectively arranged stationarily on a mounting frame (17) of the linear printing press or rotary table printing machine.
- A method for using a linear printing press or rotary table printing machine according to claim 12 or 13 or 14, characterized in that the screen-printing device arranged in the linear printing press or rotary table printing machine is used in an industrial printing process to print mass-produced items and/or that between 300 and 600 objects (03) per minute are printed sequentially in the linear printing press or rotary table printing machine by the relevant screen-printing device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018124754.0A DE102018124754B4 (en) | 2018-10-08 | 2018-10-08 | Screen printing device with a screen printing stencil and with at least two squeegee systems involved in the printing process |
PCT/EP2019/062045 WO2020074136A1 (en) | 2018-10-08 | 2019-05-10 | Screen printing device having a screen printing stencil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3863856A1 EP3863856A1 (en) | 2021-08-18 |
EP3863856B1 true EP3863856B1 (en) | 2022-10-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19723409.9A Active EP3863856B1 (en) | 2018-10-08 | 2019-05-10 | Screen printing device having a screen printing stencil as well as using method |
Country Status (7)
Country | Link |
---|---|
US (1) | US11338569B2 (en) |
EP (1) | EP3863856B1 (en) |
CN (1) | CN112912250B (en) |
DE (1) | DE102018124754B4 (en) |
MX (1) | MX2020013897A (en) |
PL (1) | PL3863856T3 (en) |
WO (1) | WO2020074136A1 (en) |
Citations (1)
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DE102005006732A1 (en) * | 2005-02-02 | 2006-08-10 | Thieme Gmbh & Co. Kg | screen printing device |
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2018
- 2018-10-08 DE DE102018124754.0A patent/DE102018124754B4/en not_active Expired - Fee Related
-
2019
- 2019-05-10 CN CN201980047313.3A patent/CN112912250B/en active Active
- 2019-05-10 WO PCT/EP2019/062045 patent/WO2020074136A1/en unknown
- 2019-05-10 MX MX2020013897A patent/MX2020013897A/en unknown
- 2019-05-10 EP EP19723409.9A patent/EP3863856B1/en active Active
- 2019-05-10 US US17/255,460 patent/US11338569B2/en active Active
- 2019-05-10 PL PL19723409.9T patent/PL3863856T3/en unknown
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DE102005006732A1 (en) * | 2005-02-02 | 2006-08-10 | Thieme Gmbh & Co. Kg | screen printing device |
Also Published As
Publication number | Publication date |
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CN112912250B (en) | 2022-09-06 |
MX2020013897A (en) | 2021-04-13 |
CN112912250A (en) | 2021-06-04 |
DE102018124754B4 (en) | 2022-03-24 |
US20210252846A1 (en) | 2021-08-19 |
PL3863856T3 (en) | 2023-01-23 |
WO2020074136A1 (en) | 2020-04-16 |
EP3863856A1 (en) | 2021-08-18 |
US11338569B2 (en) | 2022-05-24 |
DE102018124754A1 (en) | 2020-04-09 |
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