EP0983847B1 - Screen printing machine - Google Patents

Screen printing machine Download PDF

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Publication number
EP0983847B1
EP0983847B1 EP99115234A EP99115234A EP0983847B1 EP 0983847 B1 EP0983847 B1 EP 0983847B1 EP 99115234 A EP99115234 A EP 99115234A EP 99115234 A EP99115234 A EP 99115234A EP 0983847 B1 EP0983847 B1 EP 0983847B1
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EP
European Patent Office
Prior art keywords
screen
screen printing
holding means
printing apparatus
carriage
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.)
Expired - Fee Related
Application number
EP99115234A
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German (de)
French (fr)
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EP0983847A1 (en
Inventor
Karl Ludwig Rahe
Erich Bänsch
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.)
Werner Kammann Maschinenfabrik GmbH and Co KG
Original Assignee
Werner Kammann Maschinenfabrik GmbH and Co KG
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Publication of EP0983847A1 publication Critical patent/EP0983847A1/en
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Publication of EP0983847B1 publication Critical patent/EP0983847B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • 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
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/10—Screen printing machines characterised by their constructional features
    • B41P2215/11—Registering devices
    • B41P2215/112—Registering devices with means for displacing the frame

Definitions

  • the invention relates to a screen printing device according to the preamble of claim 1.
  • This subsequent adjustment is especially for such screen printing devices necessary in which several Print stations exist and the object is consecutive is provided with several partial print images that become one Complete the overall print image.
  • the. right one Positioning the partial print images to each other for the Print quality plays a particularly important role.
  • the requirement of Subsequent correction is therefore necessary for plastic bottles particularly important because this, for example through subsequent shrinking of the plastic, by internal Exposure to compressed air during printing Flaming the surface and other influences certain Can experience dimensional changes.
  • the invention is therefore based on the object of a screen printing device of the type described in the introduction that the at least one screen printing stencil without much time essentially parallel to the directions in which the Screen printing stencil is moved during the printing process, subsequently z. B. to compensate for dimensional deviations which have objects can be set in a simple manner can, without the need, the mechanical Connection between drive device and screen slide influence.
  • the means used should be simple and be easy to use and take into account the fact that the system consisting of sieve slide and holder in the course of the Printing processes very strong deceleration and acceleration forces is exposed as well as no major additional Require effort. The latter is particularly important if the screen printing device has a plurality of stencils which successively provide the object with partial print images becomes.
  • a screen printing machine is known from EP-A-488092, the Slidably mounted sieve is provided with servomotors regulating adjustment of the position of the sieve in longitudinal and Querrichtüng, the servomotors in turn electrically with at least one surveillance camera for reading registration marks or color shifts are connected.
  • This screen printing machine which is used to print web material, However, has no releasable locking device through which Sieve holder and sieve carriage independent of the servomotors are interconnectable.
  • the teaching according to the invention gives the possibility of permanent Monitoring the print image quality using, for example appropriate cameras a kind of control loop for each screen printing stencil produce such that when a deviation occurs the position of the print image or partial print image on the Object from the target position a corresponding correction of the Position of the screen printing stencil takes place.
  • This correction leads for a corresponding correction only for the following object the position of the print image relative to the object.
  • the invention enables a marked improvement the image quality, which is achieved automatically constant monitoring by the operator is not necessary, although this possibility is also within of the scope of the invention.
  • the screen printing stencil 10 is interposed by mounting slides 18 carried by a U-shaped frame 12, whose two legs 14 are substantially transverse to those of the Screen printing stencil executed during the printing process Movements run and each with one of two rails 15 existing guide for one of the bracket slide 18 provided are, the sliding shoes 16 worn by him along the respective two guide rails 15 for fine adjustment of the Screen printing stencil 10 in the direction of the longitudinal axis of the one to be printed Object 17 is displaceable.
  • everyone is an actuator 20 is assigned to the two mounting slides 18, which is fixed to the respective legs 14 via holding plates 19 is appropriate.
  • the non-rotatable spindle 22 of the respective Actuator 20 is with the associated mounting slide 18th connected so that an actuation of the servomotor 20 and the this caused an axial displacement of the spindle 22 corresponding axial displacement of the support slide 18 and thus the one attached to the two mounting slides 18 Screen printing stencil 10 causes.
  • the frame 12 is opposed by the screen holder 24 carried vertically adjustable.
  • the latter is with two in provided essential vertical guide rails 25 on which Slide shoes 28 are guided, which are attached to the support frame 12 are.
  • the vertical adjustability of the support frame 12 serves to adjust the height of the screen printing stencil 10 the dimension of the object to be printed such that with a larger Diameter of the object and the screen printing template the support frame 12 may be arranged in a higher position have to. In the respective operating position, the support frame 12 using suitable locking devices on the sieve holder 24 fixed.
  • the screen holder 24 is carried by the screen slide 30, the one in the direction of arrows 32, 34 (Fig. 2) back and forth Executes movement and for this purpose with a suitable drive connected is.
  • the screen slide is with two guide rails 36 (Fig. 3) provided on which the corresponding Sieve holder 24 provided with sliding shoes 38 also in the direction the arrows 32 and 34 is linearly displaceable.
  • the setting the sieve holder 24 by moving accordingly the guide rails 36 is carried out by a servomotor 40 which attached to a plate 41 carried by the sieve slide 30 is.
  • the non-rotatable, but axially adjustable spindle 42 is connected to the sieve holder 24, so that an actuation of the servomotor 40 a corresponding linear displacement of the Screen holder 24 and thus the screen printing stencil 10 causes.
  • detachable means are provided, through which sieve slides 30 and sieve holder 24 during normal operation, i.e. connected independently of the stepper motor 40 are so that the forces acting on the system from the screen slide 30 on the sieve holder 24 and vice versa not Actuator 40 and spindle 42 are transmitted.
  • the system is provided with a clamping cartridge 46 by the Sieve holder 24 is worn and includes a spar 48, the Screen carriage 30 is attached via mounting plates 50.
  • the Clamping cartridge 46 can be actuated in a suitable manner such that between a position in which it is clamped on the spar 48 and a position in which the clamping is released is adjustable. In their effective position, in which the clamping cartridge is firmly connected to the spar 48 by means of clamping is, the driving forces from the screen carriage 30 over the Spar 48 and the clamping cartridge 46 on the screen holder 24 transmitted so that the actuator 40 and the associated spindle 42 are at least largely relieved of these forces.
  • the Klammpatrone 46 is only when the screen holder 24th compared to the screen slide using the servomotor 40 is to be moved along the guides 36, solved. After done Adjustment will then put the collet back in its place brought into effective position in which they sieve slides 30 and Sieve holder 24 firmly connected.
  • the sieve slide 30 is on its underside with a rod-shaped Section 44 connected from a profile material on which which causes the screen carriage 30 to move back and forth Drive attacks.
  • This section 44 of profile material can in the presence of several screen printing stations in the 3 would be arranged one behind the other extend over all printing stations and with the screen slide all printing stations connected and so as a common Serve element for the transmission of the drive movements.
  • the holder for the object by means of which the object during of the printing process synchronized with the linear movement of the Screen printing stencil in contact with it around its longitudinal axis or an axis parallel to it is rotated for reasons of Clarity not shown in the drawing.
  • the drive for the object holder can z. B. about one rack each from the screen slide or from the common one Profile rail 44 on a connected to the object holder Gear are transmitted. It is a means and configurations to any person skilled in the field of screen printing are common.

Description

Die Erfindung betrifft eine Siebdruckvorrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to a screen printing device according to the preamble of claim 1.

Insbesondere beim Bedrucken von Objekten aus Kunststoff, beispielsweise Flaschen aus Kunststoff, ergibt sich die Notwendigkeit, die Einstellung der Siebdruckschablone zum zu bedruckenden Objekt häufig zu korrigieren, um so die Position der Siebdruckscha-blone bzw. des darin befindlichen Druckbildes an die Position der zu bedruckenden Oberfläche des Objektes anzupassen. Diese nachträgliche Anpassung ist vor allem bei solchen Siebdruck-vorrichtungen notwendig, bei denen mehrere Druckstationen vorhanden sind und das Objekt aufeinanderfolgend mit mehreren Teildruckbildern versehen wird, die sich zu einem Gesamt-Druckbild ergänzen. Hierbei spielt die. richtige Positionierung der Teildruckbilder zueinander für die Druckgualität eine besonders große Rolle. Das Erfordernis des nachträglichen Korrigierens ist bei Kunststoffflaschen deshalb besonders wichtig, da diese, beispielsweise durch nachträgliches Schrumpfen des Kunststoffes, durch innere Beaufschlagung durch Druckluft während des Bedruckens, durch Beflammen der Oberfläche und andere Einflüsse gewisse Dimensionsänderungen erfahren können.Especially when printing on plastic objects, for example plastic bottles, the results Need to adjust the screen printing stencil too printing object frequently to correct the position the screen printing template or the print image contained therein to the position of the surface of the object to be printed adapt. This subsequent adjustment is especially for such screen printing devices necessary in which several Print stations exist and the object is consecutive is provided with several partial print images that become one Complete the overall print image. Here the. right one Positioning the partial print images to each other for the Print quality plays a particularly important role. The requirement of Subsequent correction is therefore necessary for plastic bottles particularly important because this, for example through subsequent shrinking of the plastic, by internal Exposure to compressed air during printing Flaming the surface and other influences certain Can experience dimensional changes.

Die nachträglich, also nach der Grundeinstellung aller Siebdruckschablonen einer Siebdruckmaschine vor Beginn der Bedruckung eines Loses gleicher Objekte , erfolgende Korrektur oder Nachjustierung einzelner Schablonen hat natürlich nur ein geringes Ausmaß, welches normalerweise nur den Bruchteil eines Millimeters beträgt. Trotzdem ist sie zur Erzielung einer guten Druckqualität erforderlich. Bei bekannten Siebdruckmaschinen ist das manuelle nachträgliche Korrigieren oder Justieren, wenn es überhaupt durchgeführt wird, sehr zeitaufwendig.The retrospectively, i.e. after everyone's basic setting Screen printing stencils from a screen printing machine before printing begins a lot of the same objects, correction made or readjusting individual templates has of course only one small extent, which is usually only a fraction of a Is millimeters. Nevertheless, it is to achieve a good one Print quality required. In known screen printing machines manual subsequent correction or adjustment if it is is done at all, very time consuming.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Siebdruckvorrichtung der einleitend beschriebenen Art so auszugestalten, daß die wenigstens eine Siebdruckschablone ohne großen Zeitaufwand im wesentlichen parallel zu den Richtungen, in denen die Siebdruckschablone während des Druckvorganges bewegt wird, nachträglich z. B. zur Kompensation von Dimensionsabweichungen, die die Objekte aufweisen, auf einfache Weise eingestellt werden kann, ohne daß die Notwendigkeit besteht, dazu die mechanische Verbindung zwischen Antriebseinrichtung und Siebschlitten zu beeinflussen. Die dazu verwendeten Mittel sollen einfach und leicht bedienbar sein und die Tatsache berücksichtigen, daß das aus Siebschlitten und Halterung bestehende System im Zuge der Bedruckungsvorgänge sehr starken Verzögerungs- und Beschleunigungskräften ausgesetzt ist sowie keinen großen zusätzlichen Aufwand erfordern. Letzteres ist insbesondere dann wichtig, wenn die Siebdruckvorrichtung mehrere Schablonen aufweist, mittels welcher das Objekt aufeinanderfolgend mit Teildruckbildern versehen wird.The invention is therefore based on the object of a screen printing device of the type described in the introduction that the at least one screen printing stencil without much time essentially parallel to the directions in which the Screen printing stencil is moved during the printing process, subsequently z. B. to compensate for dimensional deviations which have objects can be set in a simple manner can, without the need, the mechanical Connection between drive device and screen slide influence. The means used should be simple and be easy to use and take into account the fact that the system consisting of sieve slide and holder in the course of the Printing processes very strong deceleration and acceleration forces is exposed as well as no major additional Require effort. The latter is particularly important if the screen printing device has a plurality of stencils which successively provide the object with partial print images becomes.

Diese Aufgabe wird mit den im Kennzeichen des Anspruches 1 angegebenen Mitteln gelöst.This task is performed with those specified in the characterizing part of claim 1 Means solved.

zwar ist aus EP-A-488092 eine Siebdruckmaschine bekannt, deren verschiebbar gelagertes Sieb mit Stellmotoren versehen ist zur regelnden Einstellung der Position des Siebes in Längs- und Querrichtüng, wobei die Stellmotore ihrerseits elektrisch mit mindestens einer Überwachungskamera für die Ablesung von Passermarken oder Farbverschiebungen verbunden sind. Diese Siebdruckmaschine, die zum Bedrucken von bahnförmigem Material dient, weist jedoch keine lösbare Feststelleinrichtung auf, durch welche siebhalterung und Siebschlitten unabhängig von den Stellmotoren miteinander verbindbar sind. a screen printing machine is known from EP-A-488092, the Slidably mounted sieve is provided with servomotors regulating adjustment of the position of the sieve in longitudinal and Querrichtüng, the servomotors in turn electrically with at least one surveillance camera for reading registration marks or color shifts are connected. This screen printing machine, which is used to print web material, However, has no releasable locking device through which Sieve holder and sieve carriage independent of the servomotors are interconnectable.

Die Lehre gemäß der Erfindung gibt die Möglichkeit, durch ständiges Überwachen der Druckbildqualität beispielsweise mittels entsprechender Kameras eine Art Regelkreis für jede Siebdruckschablone herzustellen derart, daß bei Auftreten einer Abweichung der Position des Druckbildes bzw. Teildruckbildes auf dem Objekt von der Soll-Position eine entsprechende Korrektur der Position der Siebdruckschablone erfolgt. Diese Korrektur führt zwar erst beim folgenden Objekt zu einer entsprechenden Korrektur der Position des Druckbildes relativ zum Objekt. Dies stellt jedoch keinen wesentlichen Nachteil dar, da es im allgemeinen nur darauf ankommen kann, ein Optimum zwischen Qualität des Druckbildes und dem dafür erforderlichen Aufwand zu erreichen. Dazu ist es insbesondere erforderlich, beginnende Abweichungen von der Soll-Position des Druckbildes oder Teil-Druckbildes relativ zum Objekt bzw. zu den anderen Teil-Druckbildern so früh wie möglich zu erkennen und ihnen durch entsprechende Korrektur der Position der Siebdruckschablone bzw. des in dieser befindlichen Druckbildes entgegenzuwirken.The teaching according to the invention gives the possibility of permanent Monitoring the print image quality using, for example appropriate cameras a kind of control loop for each screen printing stencil produce such that when a deviation occurs the position of the print image or partial print image on the Object from the target position a corresponding correction of the Position of the screen printing stencil takes place. This correction leads for a corresponding correction only for the following object the position of the print image relative to the object. This poses however, not a major disadvantage since it is generally can only count on an optimum between the quality of the To achieve the printed image and the effort required. For this it is particularly necessary to start deviations from the target position of the printed image or partial printed image relative to the object or to the other partial print images so early as possible to recognize and correct them accordingly the position of the screen printing stencil or the one in it Counteract the printed image.

Eine Überwachung beispielsweise durch eine Kamera würde bereits geringe Abweichungen von der Soll-Position erkennen und veranlassen, daß über den Regelkreis korrigierend eingegriffen wird. In Abhängigkeit von der gewünschten Qualität des Gesamt-Druckbildes ist es möglich, in Transportrichtung der Objekte hinter jeder einzelnen Druckstation eine Kamera vorzusehen, in welchem Fall sofort nach dem Bedruckungsvorgang das Teil-Druckbild erfaßt würde. Es ist aber auch möglich, beispielsweise bei einer Druckmaschine mit vier Druckstationen, die vom Objekt aufeinanderfolgend durchlaufen werden, lediglich eine Kamera hinter der in Transportrichtung der Objekte letzten Druckstation anzuordnen und das aus mehreren Teil-Druckbildern zusammengesetzte Gesamtdruckbild zu überprüfen, wobei es bei Verwendung unterschiedlicher Farben mit den heute verfügbaren Kameras möglich ist, zwischen den Einzeldruckbildern zu unterscheiden und jedes Einzeldruckbild bezüglich seiner Position zu erfassen und zu beurteilen.Monitoring by a camera, for example, would already be recognize and initiate minor deviations from the target position, that intervened correctively via the control loop becomes. Depending on the desired quality of the overall print image it is possible in the direction of transport of the objects to provide a camera behind each printing station, in which case the partial print image immediately after the printing process would be captured. But it is also possible, for example at a printing press with four printing stations by the object run through in succession, just one camera behind the last printing station in the transport direction of the objects to arrange and that composed of several partial print images Check overall print image, using it when using different colors possible with the cameras available today is to differentiate between the individual print images and to capture each individual print image with regard to its position and to judge.

Jedenfalls ermöglicht die Erfindung eine merkliche Verbesserung der Druckbildqualität, wobei dies auf automatischem Weg erreicht wird, eine ständige Überwachung durch die Bedienungsperson somit nicht erforderlich ist, wenngleich auch diese Möglichkeit innerhalb des Bereiches der Erfindung liegt.In any case, the invention enables a marked improvement the image quality, which is achieved automatically constant monitoring by the operator is not necessary, although this possibility is also within of the scope of the invention.

Weitere Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen.Further details of the invention emerge from the subclaims.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
die Draufsicht der für die Anbringung einer Siebdruckschablone in einer Druckstation erforderlichen Teile,
Fig. 2
die dazugehörige Vorderansicht,
Fig. 3
die dazugehörige Seitenansicht.
In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1
the top view of the parts required for attaching a screen printing stencil in a printing station,
Fig. 2
the associated front view,
Fig. 3
the associated side view.

Die Siebdruckschablone 10 wird unter Zwischenschaltung von Halterungsschlitten 18 von einem U-förmigen Rahmen 12 getragen, dessen beide Schenkel 14 im wesentlichen quer zu den von der Siebdruckschablone während des Bedruckungsvorganges ausgeführten Bewegungen verlaufen und mit jeweils einer aus zwei Schienen 15 bestehenden Führung für einen der Halterungs-schlitten 18 versehen sind, der über von ihm getragene Gleitschuhe 16 entlang den jeweiligen beiden Führungsschienen 15 zur Feineinstellung der Siebdruckschablone 10 in Richtung der Längsachse des zu bedrukkenden Objektes 17 verschiebbar ist. Zu diesem Zweck ist jedem der beiden Halterungsschlitten 18 ein Stellmotor 20 zugeordnet, welcher an den jeweiligen Schenkeln 14 über Halteplatten 19 fest angebracht ist. Die nicht drehbare Spindel 22 des jeweiligen Stellmotors 20 ist mit dem zugehörigen Halterungsschlitten 18 verbunden, so daß eine Betätigung des Stellmotors 20 und die dadurch verursachte axiale Verschiebung der Spindel 22 eine entsprechende axiale Verschiebung des Halterungsschlittens 18 und damit der an den beiden Halterungsschlitten 18 angebrachte Siebdruckschablone 10 bewirkt.The screen printing stencil 10 is interposed by mounting slides 18 carried by a U-shaped frame 12, whose two legs 14 are substantially transverse to those of the Screen printing stencil executed during the printing process Movements run and each with one of two rails 15 existing guide for one of the bracket slide 18 provided are, the sliding shoes 16 worn by him along the respective two guide rails 15 for fine adjustment of the Screen printing stencil 10 in the direction of the longitudinal axis of the one to be printed Object 17 is displaceable. For this purpose, everyone is an actuator 20 is assigned to the two mounting slides 18, which is fixed to the respective legs 14 via holding plates 19 is appropriate. The non-rotatable spindle 22 of the respective Actuator 20 is with the associated mounting slide 18th connected so that an actuation of the servomotor 20 and the this caused an axial displacement of the spindle 22 corresponding axial displacement of the support slide 18 and thus the one attached to the two mounting slides 18 Screen printing stencil 10 causes.

Der Rahmen 12 wird von der Siebhalterung 24 dieser gegenüber vertikal verstellbar getragen. Dazu ist letztere mit zwei im wesentlichen vertikalen Führungsschienen 25 versehen, an denen Gleitschuhe 28 geführt sind, die am Tragrahmen 12 angebracht sind. Die vertikale Einstellbarkeit des Halterungsrahmens 12 dient der Anpassung der Höhenlage der Siebdruckschablone 10 an die Abmessung des zu bedruckenden Objektes derart, daß mit größerem Durchmesser des Objektes die Siebdruckschablone und damit der Tragrahmen 12 in einer höheren Position angeordnet sein müssen. In der jeweiligen Betriebslage wird der Tragrahmen 12 unter Verwendung von geeigneten Feststellmitteln an der Siebhalterung 24 fixiert.The frame 12 is opposed by the screen holder 24 carried vertically adjustable. The latter is with two in provided essential vertical guide rails 25 on which Slide shoes 28 are guided, which are attached to the support frame 12 are. The vertical adjustability of the support frame 12 serves to adjust the height of the screen printing stencil 10 the dimension of the object to be printed such that with a larger Diameter of the object and the screen printing template the support frame 12 may be arranged in a higher position have to. In the respective operating position, the support frame 12 using suitable locking devices on the sieve holder 24 fixed.

Die Siebhalterung 24 wird vom Siebschlitten 30 getragen, der eine in Richtung der Pfeile 32, 34 (Fig. 2) hin- und hergehende Bewegung ausführt und zu diesem Zweck mit einem geeigneten Antrieb verbunden ist. Der Siebschlitten ist mit zwei Führungsschienen 36 (Fig. 3) versehen, an denen die mit entsprechenden Gleitschuhen 38 versehene Siebhalterung 24 ebenfalls in Richtung der Pfeile 32 bzw. 34 linear verschiebbar ist. Die Einstellung der Siebhalterung 24 durch entsprechendes Verschieben entlang den Führungsschienen 36 erfolgt durch einen Stellmotor 40, der an einer vom Siebschlitten 30 getragenen Platte 41 angebracht ist. Die nicht rotierbare, sondern axial verstellbare Spindel 42 ist mit der Siebhalterung 24 verbunden, so daß eine Betätigung des Stellmotors 40 eine entsprechende Linearverschiebung der Siebhalterung 24 und damit der Siebdruckschablone 10 bewirkt.The screen holder 24 is carried by the screen slide 30, the one in the direction of arrows 32, 34 (Fig. 2) back and forth Executes movement and for this purpose with a suitable drive connected is. The screen slide is with two guide rails 36 (Fig. 3) provided on which the corresponding Sieve holder 24 provided with sliding shoes 38 also in the direction the arrows 32 and 34 is linearly displaceable. The setting the sieve holder 24 by moving accordingly the guide rails 36 is carried out by a servomotor 40 which attached to a plate 41 carried by the sieve slide 30 is. The non-rotatable, but axially adjustable spindle 42 is connected to the sieve holder 24, so that an actuation of the servomotor 40 a corresponding linear displacement of the Screen holder 24 and thus the screen printing stencil 10 causes.

Da das aus Siebschlitten 30 und Siebhalterung 24 bestehende System aufgrund der fortlaufenden Hin- und Herbewegungen im Zuge der Bedruckungsvorgänge sehr starken Verzögerungs- und Beschleunigungskräften ausgesetzt ist, sind, lösbare Mittel vorgesehen, durch welche Siebschlitten 30 und Siebhalterung 24 während des normalen Betriebes zusätzlich, d.h., unabhängig vom Schrittmotor 40 miteinander verbunden sind, so daß die auf das System einwirkenden Kräfte vom Siebschlitten 30 auf die Siebhalterung 24 und umgekehrt nicht über Stellmotor 40 und Spindel 42 übertragen werden. Zu diesem Zweck ist das System mit einer Klemmpatrone 46 versehen, die von der Siebhalterung 24 getragen ist und einen Holm 48 umfaßt, der am Siebschlitten 30 über Halterungsplatten 50 befestigt ist. Die Klemmpatrone 46 ist in geeigneter Weise betätigbar derart, daß sie zwischen einer Position, in welcher sie am Holm 48 festgeklemmt ist, und einer Position, in welcher die Klemmung gelöst ist, einstellbar ist. In ihrer wirksamen Position, in welcher die Klemmpatrone mittels Klemmung mit dem Holm 48 fest verbunden ist, werden die Antriebskräfte vom Siebschlitten 30 über den Holm 48 und die Klemmpatrone 46 auf die Siebhalterung 24 übertragen, so daß der Stellmotor 40 und die zugehörige Spindel 42 von diesen Kräften zumindest weitgehend entlastet sind. Die Klammpatrone 46 wird lediglich dann, wenn die Siebhalterung 24 gegenüber dem Siebschlitten unter Verwendung des Stellmotors 40 entlang den Führungen 36 zu verschieben ist, gelöst. Nach erfolgter Justierung wird dann die Spannpatrone wieder in ihre wirksame Position gebracht, in welcher sie Siebschlitten 30 und Siebhalterung 24 fest miteinander verbindet.Since that consists of sieve slide 30 and sieve holder 24 System due to the continuous back and forth movements in the train the printing processes very strong deceleration and acceleration forces is exposed, detachable means are provided, through which sieve slides 30 and sieve holder 24 during normal operation, i.e. connected independently of the stepper motor 40 are so that the forces acting on the system from the screen slide 30 on the sieve holder 24 and vice versa not Actuator 40 and spindle 42 are transmitted. To this end the system is provided with a clamping cartridge 46 by the Sieve holder 24 is worn and includes a spar 48, the Screen carriage 30 is attached via mounting plates 50. The Clamping cartridge 46 can be actuated in a suitable manner such that between a position in which it is clamped on the spar 48 and a position in which the clamping is released is adjustable. In their effective position, in which the clamping cartridge is firmly connected to the spar 48 by means of clamping is, the driving forces from the screen carriage 30 over the Spar 48 and the clamping cartridge 46 on the screen holder 24 transmitted so that the actuator 40 and the associated spindle 42 are at least largely relieved of these forces. The Klammpatrone 46 is only when the screen holder 24th compared to the screen slide using the servomotor 40 is to be moved along the guides 36, solved. After done Adjustment will then put the collet back in its place brought into effective position in which they sieve slides 30 and Sieve holder 24 firmly connected.

Der Siebschlitten 30 ist an seiner Unterseite mit einem stangenförmigen Abschnitt 44 aus einem Profilmaterial verbunden, an dem der die Hin- und Herbewegung des Siebschlittens 30 bewirkende Antrieb angreift. Dieser Abschnitt 44 aus Profilmaterial kann bei Vorhandensein von mehreren Siebdruckstationen, die in der Seitenansicht gemäß Fig. 3 hintereinander angeordnet wären, sich über alle Druckstationen erstrecken und mit den Siebschlitten sämtlicher Druckstationen verbunden sein und so als gemeinsames Element für die Übertragung der Antriebsbewegungen dienen.The sieve slide 30 is on its underside with a rod-shaped Section 44 connected from a profile material on which which causes the screen carriage 30 to move back and forth Drive attacks. This section 44 of profile material can in the presence of several screen printing stations in the 3 would be arranged one behind the other extend over all printing stations and with the screen slide all printing stations connected and so as a common Serve element for the transmission of the drive movements.

Die Halterung für das Objekt, mittels welcher das Objekt während des Bedruckungsvorganges synchron zu der Linearbewegung der Siebdruckschablone in Kontakt mit dieser um seine Längsachse oder eine dazu parallele Achse rotiert wird, ist aus Gründen der Übersichtlichkeit in der Zeichnung nicht dargestellt. Der Antrieb für die Objekthalterung kann in üblicher Weise z. B. über jeweils eine Zahnstange vom Siebschlitten oder von der gemeinsamen Profilschiene 44 auf ein mit der Objekthalterung verbundenes Zahnrad übertragen werden. Es handelt sich dabei um Mittel und Ausgestaltungen, die jedem Fachmann auf dem Gebiet des Siebdruckens geläufig sind.The holder for the object, by means of which the object during of the printing process synchronized with the linear movement of the Screen printing stencil in contact with it around its longitudinal axis or an axis parallel to it is rotated for reasons of Clarity not shown in the drawing. The drive for the object holder can z. B. about one rack each from the screen slide or from the common one Profile rail 44 on a connected to the object holder Gear are transmitted. It is a means and configurations to any person skilled in the field of screen printing are common.

Claims (8)

  1. A screen printing apparatus comprising at least one screen printing stencil (10) mounted to a screen holding means (24) which is carried by a screen carriage (30) reciprocatable in the printing direction, and a holding means for the article to be printed, which performs a rotational movement during the printing operation, as well as a first drive means for the screen carriage (30), wherein connected between the first drive means which produces the reciprocating movement of the screen printing stencil (10) during the printing operation and the screen printing stencil (10) is a second drive means (40) by which the screen printing stencil is adjustable relative to the first drive means in the direction of the movement performed in the printing operation and in opposite relationship thereto, characterised in that there is provided a releasable fixing means (46, 48) by which the screen holding means (24) and the screen carriage (30) can be fixedly connected together independently of the drive means (40) providing for adjustment of the screen holding means (24) and the first drive means also provides the drive for a holding means for the article (17).
  2. A screen printing apparatus according to claim 1 characterised in that mounted on the screen carriage (30) is a guide (38) for the screen holding means (24), along which guide the screen holding means (24) can be linearly displaced.
  3. A screen printing apparatus according to claim 1 characterised in that the second drive means is in the form of a stepping motor (40).
  4. A screen printing apparatus according to claim 3 characterised in that the stepping motor (40) is carried by the screen carriage (30) and the spindle (42) of the stepping motor (40) is connected to the screen holding means (24).
  5. A screen printing apparatus according to claim 1 characterised in that the screen holding means (24) is also adjustable relative to the screen carriage (30) in a direction perpendicular to the movement produced by the first drive means.
  6. A screen printing apparatus according to claim 5 characterised in that the screen holding means (24) is provided with at least one control motor (20), by means of which the screen printing stencil is displaceable with respect to the screen holding means (24).
  7. A screen printing apparatus according to claim 1 characterised in that there are provided at least two printing stations in which in succession the article is provided with an individual print image and all individual print images supplement each other to form an overall print image.
  8. A screen printing apparatus according to claim 1 characterised in that there is provided at least one camera which detects the print image on the article and in the event of a deviation of the print image on the article can effect a correction of the position of the screen printing stencil if necessary.
EP99115234A 1998-08-27 1999-08-02 Screen printing machine Expired - Fee Related EP0983847B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19838983 1998-08-27
DE19838983A DE19838983A1 (en) 1998-08-27 1998-08-27 Screen printing device

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EP0983847A1 EP0983847A1 (en) 2000-03-08
EP0983847B1 true EP0983847B1 (en) 2002-10-23

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EP99115234A Expired - Fee Related EP0983847B1 (en) 1998-08-27 1999-08-02 Screen printing machine

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DE (2) DE19838983A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100462228C (en) * 2007-08-17 2009-02-18 武汉科技学院 Silk screen device of the multiaspect adjusting frame
DE102011122848A1 (en) 2011-10-19 2013-04-25 Krones Aktiengesellschaft Printing device for use in bottle filling system for applying e.g. paint on bottle, has holder holding squeegee so that squeegee end is spread over screen and prints paint on container, where distance between end and holder is variable
DE102011084798A1 (en) 2011-10-19 2013-04-25 Krones Aktiengesellschaft Printing device for containers
CN105479931B (en) * 2015-12-24 2018-01-30 武汉纺织大学 Fixation and adjusting means and its application method for the screen frame of screen printing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1536992A1 (en) * 1967-03-22 1970-02-26 Kammann Fa Werner Screen printing machine
US3941053A (en) * 1973-09-27 1976-03-02 James A. Black Printing press
US4084505A (en) * 1976-06-14 1978-04-18 Shiro Ichinose Device for adjusting phase of flat screen
SE8405067L (en) * 1984-10-10 1986-04-11 Svecia Silkscreen Maskiner Ab DEVICE FOR INSTALLING IN A STONE PRINTING MACHINE FROM A PRINCIPAL OF A STONE CILATED SAMPLES CONCERNING OTHER MONSTERS IN CONDITIONS TO A STANDARD PROPOSED MATERIAL
DE3730409A1 (en) * 1987-09-10 1989-03-23 Balsfulland Gmbh Maschf Geb Screen printing machine
US5129155A (en) * 1990-10-02 1992-07-14 M & R Printing Equipment, Inc. Automatic screen registration device and method therefor
DE4037678A1 (en) * 1990-11-27 1992-06-04 Klemm Gerhard Maschfab SCREEN PRINTING MACHINE
EP0736379A3 (en) * 1995-03-14 1997-08-13 Salvador Gali Long table serigra phic printing machine with balanced propulsion and equidirectional compensated adjustable repeat
US5553547A (en) * 1995-06-06 1996-09-10 Miller Process Coating Co. Laser controlled indexer for printing on ware

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DE19838983A1 (en) 2000-03-02
EP0983847A1 (en) 2000-03-08

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