EP1080885B1 - Method and apparatus for making a cylinder stencyl - Google Patents

Method and apparatus for making a cylinder stencyl Download PDF

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Publication number
EP1080885B1
EP1080885B1 EP99117201A EP99117201A EP1080885B1 EP 1080885 B1 EP1080885 B1 EP 1080885B1 EP 99117201 A EP99117201 A EP 99117201A EP 99117201 A EP99117201 A EP 99117201A EP 1080885 B1 EP1080885 B1 EP 1080885B1
Authority
EP
European Patent Office
Prior art keywords
shaft
printing cylinder
screen
screen printing
support
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 - Lifetime
Application number
EP99117201A
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German (de)
French (fr)
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EP1080885A1 (en
Inventor
Heinz Endres
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.)
Schablonentechnik Kufstein GmbH
Original Assignee
Schablonentechnik Kufstein GmbH
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
Priority to ES99117201T priority Critical patent/ES2212435T3/en
Application filed by Schablonentechnik Kufstein GmbH filed Critical Schablonentechnik Kufstein GmbH
Priority to EP99117201A priority patent/EP1080885B1/en
Priority to DE59908113T priority patent/DE59908113D1/en
Priority to AT99117201T priority patent/ATE256554T1/en
Priority to TR2000/02492A priority patent/TR200002492A3/en
Priority to MXPA00008481A priority patent/MXPA00008481A/en
Priority to BR0003975-6A priority patent/BR0003975A/en
Priority to CNB001243179A priority patent/CN1170675C/en
Publication of EP1080885A1 publication Critical patent/EP1080885A1/en
Application granted granted Critical
Publication of EP1080885B1 publication Critical patent/EP1080885B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing

Definitions

  • a method and an apparatus for producing a screen printing cylinder are already known from FR-A-1 552 436 and DE-AS 1 671 499. It is about the production of a two-layer screen printing or rotary screen printing cylinder for textile printing.
  • the screen printing cylinder too can be equipped with end rings, can have a structure as it for example, is known from British Patent 1,050,649. There is a relatively coarse-mesh cylinder from a relatively fine-mesh cylinder surround.
  • the screen printing cylinder held on the front on bundles, which are rotatably attached to a cross member are. Presses against the outer surface of the screen printing cylinder from the inside a backup roller which extends in the longitudinal direction of the screen printing cylinder.
  • a pinch roller Extends outside the screen printing cylinder and parallel to the backup roller a pinch roller, which is at a distance from the backup roller.
  • a pinch roller Extends outside the screen printing cylinder and parallel to the backup roller.
  • the gap between the support roller and the squeeze roller is tangential to the screen printing cylinder a die can be passed through, the plate-shaped and with is provided with a pattern. Pattern is determined by this matrix Masking material applied to the surface of the screen printing cylinder to to close this area.
  • the screen printing cylinder rotates, which is rotatably mounted on the cross member on the bundles, when the die is transported through the gap between the pinch roller and back-up roller.
  • the screen printing cylinder is one in which the inner cylinder relatively firm and the outer cylinder is relatively flexible, for example made of nylon consists.
  • gauze Screen printing cylinder for use.
  • Gauze can be nylon or plastic sieves with different mesh sizes.
  • the gauze is on two stable and for example metallic End rings with a certain diameter glued on. However, they would be thus produced screen printing cylinder completely unstable, so that between the two or possibly three spacer rods are arranged on both end rings, to keep the end rings at a distance.
  • These spacer bars are exclusive for transporting and storing and if necessary when developing the Screen printing cylinder used. For coating, sampling and printing these spacer bars are removed again, as with these steps the fixation of the screen printing cylinder or its end rings from the respective Machines is accomplished.
  • Such a screen printing cylinder is horizontal on one of the machines mentioned arranged, the gauze constricts in the middle. With others Words, the outside diameter of the screen printing cylinder increases Middle down. This can be done by stretching the gauze lengthways Screen printing cylinders can only be partially compensated for by the end rings be moved apart.
  • the plexiglass shell and film are removed from the screen printing cylinder removed and the screen printing cylinder itself from the exposure machine away. Then the exposed photosensitive layer developed, dried, possibly retouched and cured, so that the screen printing cylinder is then ready to print.
  • the conventional method is relatively cumbersome because u. a. the plexiglass bowls must be used to the cylinder peripheral wall when patterning or exposing via film in a radial position to keep the radial position of the peripheral wall in the area of Squeegee corresponds to later printing. Otherwise they will be distorted Received samples.
  • the invention has for its object a method of the aforementioned Kind in such a way that the handling of the screen printing cylinder is improved especially in the patterning. There should also be one suitable device created for performing this method become.
  • the method according to the invention permits a considerably simpler one Handling the screen printing cylinder when sampling, since this is only needs to be placed on the sampling device without it is necessary to surround it with additional pressure elements or inflate a hose roller lying in it.
  • the touchdown and Losing weight on the device or from the device thus takes place relatively easy.
  • the system and the sample in Area of this system ensures that always flawless and undistorted Also receive prints when printing on tiles or ceramics if the printing area or squeegee is there during the printing process where the system was previously located.
  • a Roll used, the longitudinal axis of which is parallel to the cylinder longitudinal axis. Since the roller itself can rotate freely about its longitudinal axis, Rotation of the screen printing cylinder about its cylinder axis and runs on the inner peripheral surface of the screen printing cylinder. By this rolling process is avoided that additional tensions in the Circumferential wall of the screen printing cylinder are transferred, resulting in a leads to even better print quality.
  • the jacket of the screen printing cylinder can be used in many different ways be sampled.
  • the sampling process always takes place from the outside, thus on the outer peripheral surface of the screen printing cylinder.
  • the sampling of the jacket can be carried out that a masking liquid is applied directly to this according to the pattern becomes.
  • a masking liquid can be a curable liquid, wax, a Metal alloy, and the like.
  • a gauze is used as the coat, the pores or Has openings with a certain mesh size.
  • the gauze can also consist of nylon or another plastic. It's relatively flexible in order not to damage tiles or ceramics in particular when printing and so as not to harm yourself.
  • the machine end rings, the clamping device, the system and the processing station can all be on one bed of a processing machine are located, which is approximately lathe-shaped.
  • the screen printing cylinder can be easily applied to the machine for the purpose of sampling put on and take it off again, so that the processing step the sampling overall considerably simplified.
  • the system is preferably as about its longitudinal axis rotatable shaft which is fixedly positioned in its angular position and rests via a gear on the axis on which the end rings are seated and which is rotated to rotate the screen printing cylinder. In this respect it follows a compact unit.
  • the processing station sits on a carriage of the processing machine, the carriage in turn on a guide rail is slidable, which rests on the machine bed and extends parallel to the longitudinal direction of the shaft on which the screen printing cylinder has been put on.
  • the processing station can be used as Spray head for spraying liquids or other viscous media be trained.
  • the spray head can also be designed that it is suitable for spraying liquid metal alloys, for example for spraying out woody metal. It can move other processing units behind an ejection opening have, such as a heat source for hardening the sprayed liquid by applying heat.
  • the processing station can also have an exposure head have to light-sensitive layers for example with focused To be able to expose radiation or around other layers with more focused To be able to remove radiation.
  • focused radiation it can be focused laser radiation, for example.
  • a spray head with one behind it in the direction of movement could also be used Exposure source to be provided so that after spraying a Area of a mask has an underlying photosensitive layer can expose large areas immediately through the mask.
  • Figures 1 to 3 show a device according to the invention for sampling a screen printing cylinder in accordance with the invention Method.
  • the screen printing cylinder 1 consists of two end rings 2 and 3, which carry a gauze 4 on the circumference. Opposite margins the gauze 4 are along the peripheral edges of the end rings 2 and 3 with these glued, the abutting edges of the gauze 4 also preferably connected by gluing, so that the End rings 2 and 3 together with the gauze 4 form the screen printing cylinder 1.
  • a central longitudinal axis 5 of the screen printing cylinder 1 or End rings 2 and 3 are coaxial with a rotatably mounted shaft 6 with shaft sections 6a and 6b.
  • the shaft sections 6a and 6b are rigid with each other connected.
  • the shaft section 6b is suitable coupled with a rotary drive.
  • the shaft section 6b is rigidly connected to it Machine end ring 7.
  • This machine end ring 7 sits firmly on the shaft section 6b and when the shaft section 6b rotates therefrom taken along accordingly.
  • Sitting on the other shaft section 6a another machine end ring 8, which rotates when the shaft section 6a is rotated accordingly by the latter, but on the shaft section 6a is displaceable in its longitudinal direction.
  • Set screw 9 To postpone of the machine end ring 8 along the shaft section 6a is used Set screw 9, when it rotates in one direction or the other the machine end ring 8 along the shaft section 6a accordingly is moved forward or back.
  • the machine end ring 7 is included the end ring 3 rigidly coupled, while the machine end ring 8 with the End ring 2 is rigidly coupled.
  • the coupling takes place via clamping rings 10 and 11, as will be explained.
  • the clamping rings 10 and 11 exist each made up of a pair of half shells that overlap at one end Hinge are connected together and at the other end one Have clamp closure, so that when closing the respective Clamp closures, the clamping rings 10 and 11, the respective end rings 3, 7 or 2, 8 holding together.
  • the screen printing cylinder 1 is mounted so that it is removed with the machine end ring 8 is first placed on the shaft 6, after which the End ring 3 with the machine end ring 7 using the clamping ring 10 are interconnected. Then the machine end ring 8 pushed onto the shaft section 6a, and it will be under Using the clamping ring 11, the end rings 2 and 8 are clamped together.
  • the set screw 9 is turned so that the machine end ring 8 removed from the machine end ring 7, in this way the between the end rings 2 and 3 lying gauze 4 in the longitudinal direction of the shaft 6 tighten.
  • a gear housing 12 is located on shaft 6. This gear housing 12 is fixed in space and is not when the shaft 6 rotates taken. This is described in more detail below. With the gearbox 12 is connected to a bracket 13 which extends in the longitudinal direction the shaft 6 extends and in the direction of the cylinder longitudinal axis 5 a length has, which corresponds approximately to the inner distance of the end rings 2 and 3.
  • the Gear housing 12 is located approximately in the longitudinal direction of the shaft 6 in the middle of the screen printing cylinder 1, so that the bracket 13, the gear housing 12 in The longitudinal direction of the shaft 6 projects approximately equally far on both sides.
  • the bracket 13 has a bearing device at each of its two free ends 19 and 20 on towards the inner wall of the screen printing cylinder 1 point. Between the bearing devices 19 and 20 is a roller 21 freely rotatably supported on their end faces.
  • the roller 21 has one constant diameter over its length and extends in the longitudinal direction also seen practically over the entire length of the bracket 13 can be seen from that required for the storage facilities 19 and 20 Space off.
  • the roller 21 or its longitudinal axis 22 is parallel to the cylinder longitudinal axis 5. Mispositioning can be done with the help of the above described adjustment mechanism from the elongated holes 14 and 15 and the screws 16 and 17 are balanced.
  • the diameter of the Roller 21 is selected so that the bearing devices 19 and 20 in the direction a little overhanging the inside of the gauze 4.
  • the roller 21 is thus achieved that the gauze 4 in the region of the roller 21 parallel to the longitudinal axis of the cylinder 5 is held.
  • the roller 21 can radially so far be pressed outwards that the gauze 4 also the end rings 2 and 3 slightly overlooked in the radial direction. It is important that the gauze 4 with her patterning surface practically over the entire length of the roller 21st and thus practically parallel over the entire length of the screen printing cylinder 1 comes to rest on shaft 6 or cylinder longitudinal axis 5.
  • a processing station 23 is arranged opposite the roller 21.
  • This processing station 23 is in the longitudinal direction of the cylinder longitudinal axis 5 slidably mounted and can therefore be parallel to the screen printing cylinder 1 in the area in which the gauze 4 the roller 21 is applied tangentially. Over the entire length of the roller 21 is thus an equal distance between the gauze 4 and the processing station 23 ensured. Keeping this distance constant over The length of the screen printing cylinder is important in the later printing process create perfect patterns using the screen printing cylinder 1 to be able to.
  • the processing station 23 is mounted on a carriage 24 which runs along is slidable by guideways 25, which on a machine bed 26 of the device are mounted.
  • the guideways 25 run parallel to the cylinder axis 5.
  • Guideways 25 and Machine bed 26 can best be seen in FIG.
  • the processing station 23 can be any suitable station act with which the gauze 4 can be sampled.
  • the processing station 23 be a spray head with which a liquid Medium or a viscous medium sprayed onto the gauze 4 to Close through openings according to the pattern.
  • the processing station is accordingly 23 designed.
  • the processing station 23 can also be an optical one Station, such as one for emitting a laser beam, with which a light-sensitive layer located on the gauze 4 is exposed leaves, which is then developed to make the photosensitive Open layer according to pattern.
  • a laser beam could also be emitted be directly with him a closure layer located on the gauze 4 to remove according to the pattern, i.e. to burn it away.
  • the processing station 23 could also have several in the longitudinal direction the cylinder longitudinal axis 5 processing areas lying one behind the other exhibit.
  • a first processing area could be, for example on the gauze 4 lying photosensitive layer with a liquid and sample opaque medium during a second editing area the processing station 23 the patterned photosensitive Layer exposed.
  • Further exemplary embodiments would be conceivable. It is only important that the processing or Sampling of the gauze always in Area of tangential contact between gauze 4 and roller 21 in Longitudinal direction of the roller 21 and at the same distance from the processing station 23 to the roller 21. Only in this way is a good reproduction the pattern in the later printing process.
  • FIG 2 shows the device according to the invention seen from the side and partly in the cut.
  • the same elements as in Figure are the same Reference numerals and are not described again.
  • the gauze 4 is only patterned where it rolls the 21st touches tangentially. In this area there is a perfect sample ensures that only there the gauze 4 is always a constant distance from Processing station 23 has.
  • the gauze 4 is sampled in such a way that with the screen printing cylinder 1 rotating, the processing station 23rd moves in the longitudinal direction of the roller 21.
  • FIG. 3 shows an axial section through the screen printing cylinder 1 in the area the wave 6.
  • the shaft sections 6a and 6b carry over the machine end rings 7 and 8 the screen printing cylinder 1, as already mentioned.
  • the half shells of the Clamping rings 10 and 11 can be swung out around the screen printing cylinder 1 to release. It can then be removed after removing the machine end ring 8 are deducted from the shaft section 6a from the entire shaft 6.
  • the shaft 6 is supported on the right side in FIG. 3 on a bearing block 27 which is firmly mounted on the machine bed 26.
  • the machine bed 26 is in Figure 3 only indicated schematically.
  • a firmly connected to the shaft 6 Axle shoulder 28 serves to drive the shaft 6 and is not shown Pulley firmly connected, driven by a belt becomes.
  • the drive rod 29 rotates on the one hand Longitudinal cylinder axis 5 at a distance, while on the other hand the drive rod 29 performs an additional self-rotation because the gear 31 meshes with the internal toothing of the ring gear 33.
  • the latter is firm arranged. Since here the gear 30 is also carried accordingly is and meshes with the internal teeth of the ring gear 32, it remains with the ring gear 32 fixedly connected gear housing 12 fixed in space, and so that the bracket 13 connected to the gear housing 12 and the with the bracket 13 connected roller 21, which is only about their Longitudinal axis 22 can rotate freely.
  • roller 21 remains dimensionally stable, so retains with regard to it Longitudinal axis 22 at a predetermined angular position. So the roller 21 comes when the screen printing cylinder 1 is rotated about the cylinder longitudinal axis 5 always to lie opposite the processing station 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Screen Printers (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printing Methods (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)

Abstract

The rotatable cylinder fabric (4) during its patterning process is stretched between end rings (2, 3) and is supported from inside by means of a roll (21) - which extends virtually over the entire length of the cylinder screen against the external patterning head (23). An Independent claim is also included for an apparatus for implementation of the proposed method. It comprises means for rotating and fixing in required angular positions the cylinder fabric, and supporting it from inside during the patterning process.

Description

Ein Verfahren und eine Vorrichtung zur Herstellung eines Siebdruckzylinders sind bereits aus der FR-A-1 552 436 bzw. der DE-AS 1 671 499 bekannt. Dort geht es um die Herstellung eines zweilagigen Siebdruck- bzw. Rotationsrasterdruckzylinders für den Textildruck. Der Siebdruckzylinder, der auch mit Endringen ausgestattet sein kann, kann einen Aufbau aufweisen, wie er zum Beispiel aus der Britischen Patentschrift 1 050 649 bekannt ist. Dort ist ein relativ grobmaschiger Zylinder von einem relativ feinmaschigen Zylinder umgeben. Beim eingangs genannten Stand der Technik wird der Siebdruckzylinder stirnseitig auf Bunden gehalten, die drehbar an einem Querträger befestigt sind. Gegen die Mantelfläche des Siebdruckzylinders drückt von innen eine Stützwalze, die sich in Längsrichtung des Siebdruckzylinders erstreckt. Außerhalb des Siebdruckzylinders und parallel zur Stützwalze erstreckt sich eine Quetschrolle, die der Stützwalze im Abstand gegenüberliegt. Durch den Spalt zwischen Stützwalze und Quetschrolle ist tangential zum Siebdruckzylinder eine Matrize hindurchführbar, die plattenförmig ausgebildet und mit einem Muster versehen ist. Durch diese Matrize hindurch wird musterbedingt Abdeckmaterial auf die Oberfläche des Siebdruckzylinders aufgetragen, um diesen bereichsweise zu verschließen. Dabei erfolgt die Drehung des Siebdruckzylinders, der über die Bunde auf dem Querträger drehbar gelagert ist, beim Transport der Matrize durch den Spaltbereich zwischen Quetschrolle und Stützwalze hindurch. Nach der Britischen Patentschrift 1 050 649 handelt es sich bei dem Siebdruckzylinder um einen solchen, bei der der Innenzylinder relativ fest und der Außenzylinder relativ flexibel ist, etwa aus Nylon besteht. A method and an apparatus for producing a screen printing cylinder are already known from FR-A-1 552 436 and DE-AS 1 671 499. It is about the production of a two-layer screen printing or rotary screen printing cylinder for textile printing. The screen printing cylinder, too can be equipped with end rings, can have a structure as it for example, is known from British Patent 1,050,649. There is a relatively coarse-mesh cylinder from a relatively fine-mesh cylinder surround. In the prior art mentioned at the beginning, the screen printing cylinder held on the front on bundles, which are rotatably attached to a cross member are. Presses against the outer surface of the screen printing cylinder from the inside a backup roller which extends in the longitudinal direction of the screen printing cylinder. Extends outside the screen printing cylinder and parallel to the backup roller a pinch roller, which is at a distance from the backup roller. By the The gap between the support roller and the squeeze roller is tangential to the screen printing cylinder a die can be passed through, the plate-shaped and with is provided with a pattern. Pattern is determined by this matrix Masking material applied to the surface of the screen printing cylinder to to close this area. The screen printing cylinder rotates, which is rotatably mounted on the cross member on the bundles, when the die is transported through the gap between the pinch roller and back-up roller. Acting according to British Patent 1,050,649 the screen printing cylinder is one in which the inner cylinder relatively firm and the outer cylinder is relatively flexible, for example made of nylon consists.

Um Fliesen oder Keramik bedrucken zu können, kommen u. a. mit Gaze bespannte Siebdruckzylinder zum Einsatz. Gaze können Nylon- bzw. Kunststoffsiebe mit verschiedener Maschenweite sein. Zur Bildung der Siebdruckzylinder wird die Gaze auf zwei stabile und zum Beispiel metallische Endringe mit bestimmtem Durchmesser aufgeklebt. Allersdings wären die so hergestellten Siebdruckzylinder komplett instabil, so daß zwischen die beiden Endringe zwei oder ggf. drei Distanzstangen angeordnet werden, um die Endringe auf Abstand zu halten. Diese Distanzstangen werden ausschließlich zum Transportieren und Lagern und ggf. beim Entwickeln der Siebdruckzylinder verwendet. Zum Beschichten, Bemustern und Drucken werden diese Distanzstangen wieder entfernt, da bei diesen Arbeitsschritten die Fixierung der Siebdruckzylinder bzw. ihrer Endringe von den jeweiligen Maschinen bewerkstelligt wird.To be able to print on tiles or ceramics, a. covered with gauze Screen printing cylinder for use. Gauze can be nylon or plastic sieves with different mesh sizes. To form the screen printing cylinder the gauze is on two stable and for example metallic End rings with a certain diameter glued on. However, they would be thus produced screen printing cylinder completely unstable, so that between the two or possibly three spacer rods are arranged on both end rings, to keep the end rings at a distance. These spacer bars are exclusive for transporting and storing and if necessary when developing the Screen printing cylinder used. For coating, sampling and printing these spacer bars are removed again, as with these steps the fixation of the screen printing cylinder or its end rings from the respective Machines is accomplished.

Ist ein solcher Siebdruckzylinder auf einer der genannten Maschinen horizontal angeordnet, schnürt sich die Gaze in der Mitte ein. Mit anderen Worten nimmt der Außendurchmesser des Siebdruckzylinders zu seiner Mitte hin ab. Dies kann durch Spannen der Gaze in Längsrichtung des Siebdruckzylinders nur zum Teil kompensiert werden, indem die Endringe auseinandergefahren werden.Such a screen printing cylinder is horizontal on one of the machines mentioned arranged, the gauze constricts in the middle. With others Words, the outside diameter of the screen printing cylinder increases Middle down. This can be done by stretching the gauze lengthways Screen printing cylinders can only be partially compensated for by the end rings be moved apart.

Soll eine mit einem lichtempfindlichen Lack zum Beispiel innen und außen beschichtete Gaze, die zylindrisch auf gegenüberliegenden Endringen befestigt ist, in einer Belichtungsmaschine bemustert werden, so wird herkömmlicherweise um die Gaze herum ein Film mit dem zu druckenden Muster herumgelegt, durch den hindurch die Gaze belichtet wird. Damit der Film exakt an der Umfangsoberfläche der Gaze anliegt, um Hohlkopien zu vermeiden, wird außen eine zylindrische Plexiglasschale über den gesamten Umfang der Gaze aufgespannt, während eine innen liegende Schlauchwalze den durch die Gaze gebildeten Siebdruckzylinder aufbläst und dessen Mantel gegen die Plexiglasschale drückt, wobei der Film zwischen der Außenseite der Gaze und der Innenseite der Plexiglasschale zu liegen kommt. Anschließend wird die auf der Gaze liegende lichtempfindliche Schicht durch den Film hindurch belichtet, also auch durch die Plexiglasschale hindurch, und zwar mit geeigneter Strahlung und über einen vorbestimmten Zeitraum.Should one with a light-sensitive lacquer, for example, inside and outside coated gauze, which is attached to opposite end rings is patterned in an exposure machine, it becomes conventional around the gauze a film with the pattern to be printed laid around, through which the gauze is exposed. So that Film lies exactly on the circumferential surface of the gauze to make hollow copies avoid, a cylindrical plexiglass shell on the outside Circumference of the gauze stretched out while an inner tube roller inflates the screen printing cylinder formed by the gauze and its Press the jacket against the plexiglass shell, with the film between the To lie outside of the gauze and the inside of the plexiglass shell comes. Then the photosensitive material lying on the gauze becomes Layer exposed through the film, including the plexiglass shell through, with suitable radiation and over a predetermined Period.

Nach dem Belichten werden Plexiglasschale und Film vom Siebdruckzylinder abgenommen und der Siebdruckzylinder selbst aus der Belichtungsmaschine entfernt. Sodann wird die belichtete lichtempfindliche Schicht entwickelt, getrocknet, ggf. retuschiert und ausgehärtet, so daß der Siebdruckzylinder dann druckfertig ist.After exposure, the plexiglass shell and film are removed from the screen printing cylinder removed and the screen printing cylinder itself from the exposure machine away. Then the exposed photosensitive layer developed, dried, possibly retouched and cured, so that the screen printing cylinder is then ready to print.

Beim Drucken mit Hilfe des Siebdruckzylinders wird mittels einer Innenrakel die Druckfarbe durch die jetzt bemusterte Gaze hindurch auf zum Beispiel Fliesen gedrückt. Dabei wird die Gaze im Bereich der Rakel auf etwa den Durchmesser der Endringe ausgedehnt bzw. verformt.When printing with the help of the screen printing cylinder, using an inner squeegee the printing ink through to the now patterned gauze Example tiles pressed. The gauze in the area of the doctor blade is about the diameter of the end rings expanded or deformed.

Das herkömmliche Verfahren ist relativ umständlich, da u. a. die Plexiglasschalen zum Einsatz kommen müssen, um die Zylinderumfangswandung beim Bemustern bzw. Belichten über Film in einer radialen Position zu halten, die der radialen Position der Umfangswandung im Bereich der Rakel beim späteren Drucken entspricht. Andernfalls werden verzerrte Muster erhalten.The conventional method is relatively cumbersome because u. a. the plexiglass bowls must be used to the cylinder peripheral wall when patterning or exposing via film in a radial position to keep the radial position of the peripheral wall in the area of Squeegee corresponds to later printing. Otherwise they will be distorted Received samples.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art so weiterzubilden, daß die Handhabung der Siebdruckzylinder insbesondere beim Bemustern verbessert wird. Es soll ebenfalls eine zur Durchführung dieses Verfahrens geeignete Vorrichtung geschaffen werden.The invention has for its object a method of the aforementioned Kind in such a way that the handling of the screen printing cylinder is improved especially in the patterning. There should also be one suitable device created for performing this method become.

Die verfahrensseitige Lösung der gestellten Aufgabe ist im Anspruch 1 angegeben. Dagegen ist die vorrichtungsseitige Lösung der gestellten Aufgabe im Anspruch 8 genannt. Vorteilhafte Ausgestaltungen der Erfindung sind den jeweils nachgeordneten Unteransprüchen zu entnehmen.The procedural solution to the problem is set out in claim 1. In contrast, the device-side solution is the task called in claim 8. Advantageous embodiments of the invention can be found in the subordinate claims.

Die Erfindung betrifft zunächst ein Verfahren zur Herstellung eines Siebdruckzylinders, mit folgenden Schritten:

  • ein Mantel des Siebdruckzylinders wird nur durch eine von zwei Endringen gehaltene flexible Gaze gebildet, die für Flüssigkeiten bzw. pastöse Massen durchlässig ist;
  • die Endringe sitzen koaxial auf einer drehbar gelagerten Welle, von der sie bei Drehung mitgenommen werden;
  • durch Verschieben der Endringe voneinander weg wird der Mantel gespannt;
  • eine auf einer Seite der Welle sitzende und sich wenigstens annähernd über die gesamte Länge des Siebdruckzylinders erstreckende Anlage drückt den Mantel von innen in eine parallel zur Welle liegende Position;
  • bei Drehung der Welle wird die Anlage raumstabil gehalten; und
  • eine Bemusterung des Siebdruckzylinders von außen erfolgt bei dessen Drehung nur im Bereich dieser Anlage mittels einer Bearbeitungsstation, die parallel zur Welle verschoben wird.
The invention initially relates to a method for producing a screen printing cylinder, comprising the following steps:
  • a jacket of the screen printing cylinder is formed only by a flexible gauze held by two end rings, which is permeable to liquids or pasty masses;
  • the end rings sit coaxially on a rotatably mounted shaft, from which they are carried when they rotate;
  • by moving the end rings away from each other, the jacket is stretched;
  • a system seated on one side of the shaft and extending at least approximately over the entire length of the screen printing cylinder presses the jacket from the inside into a position lying parallel to the shaft;
  • when the shaft rotates, the system is kept stable; and
  • The screen printing cylinder is sampled from the outside when it is rotated only in the area of this system by means of a processing station which is displaced parallel to the shaft.

Das erfindungsgemäße Verfahren gestattet eine erheblich einfachere Handhabung des Siebdruckzylinders beim Bemustern, da dieser lediglich auf die Bemusterungsvorrichtung aufgesetzt zu werden braucht, ohne daß es erforderlich ist, ihn noch mit weiteren Anpreßelementen zu umgeben oder eine in ihm liegende Schlauchwalze aufzublasen. Das Aufsetzen und Abnehmen auf die Vorrichtung bzw. von der Vorrichtung gestaltet sich somit relativ leicht. Außerdem wird durch die Anlage und das Bemustern im Bereich dieser Anlage sichergestellt, daß immer einwandfreie und unverzerrte Drucke auch beim Bedrucken von Fliesen bzw. Keramik erhalten werden, wenn der Druckbereich bzw. die Rakel beim Druckvorgang dort liegen, wo sich zuvor die Anlage befand.The method according to the invention permits a considerably simpler one Handling the screen printing cylinder when sampling, since this is only needs to be placed on the sampling device without it is necessary to surround it with additional pressure elements or inflate a hose roller lying in it. The touchdown and Losing weight on the device or from the device thus takes place relatively easy. In addition, the system and the sample in Area of this system ensures that always flawless and undistorted Also receive prints when printing on tiles or ceramics if the printing area or squeegee is there during the printing process where the system was previously located.

Nach einer vorteilhaften Ausgestaltung der Erfindung wird als Anlage eine Walze verwendet, deren Längsachse parallel zur Zylinderlängsachse liegt. Da sich die Walze selbst frei um ihre Längsachse drehen kann, wird sie bei Drehung des Siebdruckzylinders um seine Zylinderachse mitgenommen und läuft auf der Innenumfangsfläche des Siebdruckzylinders ab. Durch diesen Abrollvorgang wird vermieden, daß zusätzliche Spannungen in die Umfangswandung des Siebdruckzylinders übertragen werden, was zu einer noch besseren Druckqualität führt. According to an advantageous embodiment of the invention, a Roll used, the longitudinal axis of which is parallel to the cylinder longitudinal axis. Since the roller itself can rotate freely about its longitudinal axis, Rotation of the screen printing cylinder about its cylinder axis and runs on the inner peripheral surface of the screen printing cylinder. By this rolling process is avoided that additional tensions in the Circumferential wall of the screen printing cylinder are transferred, resulting in a leads to even better print quality.

Der Mantel des Siebdruckzylinders kann auf die verschiedensten Weisen bemustert werden. Dabei erfolgt der Bemusterungsvorgang immer von außen, also an der äußeren Umfangsoberfläche des Siebdruckzylinders.The jacket of the screen printing cylinder can be used in many different ways be sampled. The sampling process always takes place from the outside, thus on the outer peripheral surface of the screen printing cylinder.

Zum Beispiel kann die Bemusterung des Mantels so durchgeführt werden, daß auf diesen direkt eine Abdeckflüssigkeit mustergemäß aufgebracht wird. Es kann sich hier um eine aushärtbare Flüssigkeit, um Wachs, eine Metall-Legierung, und dergleichen, handeln.For example, the sampling of the jacket can be carried out that a masking liquid is applied directly to this according to the pattern becomes. It can be a curable liquid, wax, a Metal alloy, and the like.

Möglich ist es aber auch, zur Bemusterung des Mantels eine auf ihr liegende lichtempfindliche Schicht mustergemäß zu belichten und anschließend zu entwickeln. Dabei kann die Belichtung direkt erfolgen, beispielsweise mit Hilfe eines ein- und ausschaltbaren Laserstrahls. Die Belichtung könnte aber auch großflächig über einen Film erfolgen, der tangential an der äußeren Umfangsfläche des Mantels entlanggeführt wird und sich ebenfalls auf der Anlage abstützt.It is also possible, however, to lay one on top of it to sample the coat expose the photosensitive layer according to the pattern and then to develop. The exposure can take place directly, for example with the help of a laser beam that can be switched on and off. The exposure could also be done over a large area using a film that is tangential is guided along the outer peripheral surface of the jacket and itself also based on the system.

Andererseits ist es aber auch möglich, durch einen Spritzvorgang der o. g. Art zunächst einen auf dem Mantel liegenden lichtempfindlichen Film mit lichtundurchlässiger Abdeckflüssigkeit musterbedingt abzudecken, um auf diese Weise eine Maske herzustellen, durch die anschließend hindurch belichtet wird.On the other hand, it is also possible to spray the above-mentioned. Art first with a light-sensitive film lying on the coat opaque masking liquid to cover according to pattern in this way to produce a mask, through which subsequently is exposed.

Schließlich besteht eine andere Möglichkeit zur Bemusterung des Mantels darin, eine auf ihm liegende Schicht unmittelbar mustergemäß durch Bestrahlung abzutragen, etwa durch Wegbrennen mittels eine fokussierten Laserstrahls. Hier muß allerdings das Schichtmaterial im Vergleich zum Material des Mantels so gewählt sein, daß kein Durchbrennen des Mantels selbst erfolgt. Finally, there is another way to sample the jacket in it, a layer lying on it directly according to pattern by irradiation abrasion, for example by burning away with a focused Laser beam. Here, however, the layer material must be compared to The material of the jacket must be chosen so that the jacket does not burn through done itself.

Als Mantel wird eine Gaze verwendet, die Poren bzw. Öffnungen mit bestimmter Maschenweite aufweist. Dabei kann die Gaze auch aus Nylon oder einem anderen Kunststoff bestehen. Sie ist relativ flexibel, um insbesondere Fliesen bzw. Keramik beim Bedrucken nicht zu beschädigen und um sich selbst nicht zu beschädigen.A gauze is used as the coat, the pores or Has openings with a certain mesh size. The gauze can also consist of nylon or another plastic. It's relatively flexible in order not to damage tiles or ceramics in particular when printing and so as not to harm yourself.

Die Erfindung betrifft außerdem eine Vorrichtung zur Herstellung eines Siebdruckzylinders, mit :

  • auf einer drehbaren Welle angeordneten Maschinenendringen zum stirnseitigen Halten des Siebdruckzylinders koaxial zur Welle;
  • einer Spanneinrichtung zum Spannen des Siebdruckzylinders in Längsrichtung der Welle;
  • einer innen und nur an einer Seite der Welle liegenden und sich wenigstens annähernd über die gesamte Länge des Siebdruckzylinders erstreckenden Anlage, die den Mantel des Siebdruckzylinders in eine parallel zur Welle liegende Position drückt, wobei
  • die Anlage über ein Getriebe auf der Welle sitzt, das sie bei Drehung der Welle raumstabil hält; und
  • einer Bearbeitungsstation zur Bemusterung des Siebdruckzylinders von außen, die der Anlage gegenüberliegend positioniert und parallel zur Welle verschiebbar ist.
The invention also relates to a device for producing a screen printing cylinder, comprising:
  • machine end rings arranged on a rotatable shaft for holding the screen printing cylinder on the end face coaxial to the shaft;
  • a tensioning device for tensioning the screen printing cylinder in the longitudinal direction of the shaft;
  • a system lying inside and only on one side of the shaft and extending at least approximately over the entire length of the screen printing cylinder, which presses the jacket of the screen printing cylinder into a position lying parallel to the shaft, wherein
  • the system sits on the shaft via a gearbox, which keeps it stable when the shaft rotates; and
  • a processing station for sampling the screen printing cylinder from the outside, which is positioned opposite the system and can be moved parallel to the shaft.

Die Maschinenendringe, die Spanneinrichtung, die Anlage und die Bearbeitungsstation können sich sämtlich auf einem Bett einer Bearbeitungsmaschine befinden, die etwa drehbankartig ausgebildet ist. Der Siebdruckzylinder läßt sich zum Zwecke der Bemusterung in einfacher Weise auf die Maschine aufsetzen und von dieser wieder abnehmen, so daß sich der Bearbeitungsschritt der Bemusterung insgesamt erheblich vereinfacht.The machine end rings, the clamping device, the system and the processing station can all be on one bed of a processing machine are located, which is approximately lathe-shaped. The screen printing cylinder can be easily applied to the machine for the purpose of sampling put on and take it off again, so that the processing step the sampling overall considerably simplified.

Wie bereits erwähnt, ist die Anlage vorzugsweise als um ihre Längsachse drehbare Welle ausgebildet, die in ihrer Winkellage fest positioniert ist und über ein Getriebe auf derjenigen Achse ruht, auf der die Endringe sitzen und die zur Drehung des Siebdruckzylinders gedreht wird. Insofern ergibt sich eine kompakte Baueinheit. As already mentioned, the system is preferably as about its longitudinal axis rotatable shaft which is fixedly positioned in its angular position and rests via a gear on the axis on which the end rings are seated and which is rotated to rotate the screen printing cylinder. In this respect it follows a compact unit.

Die Bearbeitungsstation sitzt auf einem Schlitten der Bearbeitungsmaschine, wobei der Schlitten seinerseits auf einer Führungsschiene gleitend verschiebbar ist, welche auf dem Maschinenbett ruht und sich parallel zur Längsrichtung der Welle erstreckt, auf die der Siebdruckzylinder aufgesetzt worden ist.The processing station sits on a carriage of the processing machine, the carriage in turn on a guide rail is slidable, which rests on the machine bed and extends parallel to the longitudinal direction of the shaft on which the screen printing cylinder has been put on.

Die B earbeitungsstation kann nach einer Ausgestaltung der Erfindung als Spritzkopf zum Ausspritzen von Flüssigkeiten oder anderen viskosen Medien ausgebildet sein. Dabei kann der Spritzkopf auch so gestaltet sein, daß er sich zum Ausspritzen flüssiger Metall-Legierungen eignet, etwa zum Ausspritzen von Woodschem Metall. Er kann in Bewegungsrichtung hinter einer Ausspritzöffnung auch noch andere Bearbeitungseinheiten aufweisen, etwa eine Heizquelle zum Härten der ausgespritzen Flüssigkeit durch Anwendung von Hitze.According to one embodiment of the invention, the processing station can be used as Spray head for spraying liquids or other viscous media be trained. The spray head can also be designed that it is suitable for spraying liquid metal alloys, for example for spraying out woody metal. It can move other processing units behind an ejection opening have, such as a heat source for hardening the sprayed liquid by applying heat.

Andererseits kann die Bearbeitungsstation aber auch einen Belichtungskopf aufweisen, um lichtempfindliche Schichten zum Beispiel mit fokussierter Strahlung belichten zu können oder um andere Schichten mit fokussierter Strahlung abtragen zu können. Bei der fokussierten Strahlung kann es sich zum Beispiel um fokussierte Laserstrahlung handeln.On the other hand, the processing station can also have an exposure head have to light-sensitive layers for example with focused To be able to expose radiation or around other layers with more focused To be able to remove radiation. With focused radiation it can be focused laser radiation, for example.

Auch könnte ein Spritzkopf mit einer in Bewegungsrichtung hinter ihm liegenden Belichtungsquelle versehen sein, so daß er nach Aufspritzen eines Bereichs einer Maske eine darunterliegende lichtempfindliche Schicht durch die Maske hindurch sofort großflächig belichten kann.A spray head with one behind it in the direction of movement could also be used Exposure source to be provided so that after spraying a Area of a mask has an underlying photosensitive layer can expose large areas immediately through the mask.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnung näher beschrieben. Es zeigen:

  • Figur 1 eine Draufsicht auf eine Vorrichtung zur Bemusterung eines Siebdruckzylinders;
  • Figur 2 eine Seitenansicht der Vorrichtung nach Figur 1, teilweise im Schnitt; und
  • Figur 3 einen Axialschnitt durch die Vorrichtung nach Figur 1.
    • An embodiment of the invention is described below with reference to the drawing. Show it:
  • Figure 1 is a plan view of a device for patterning a screen printing cylinder;
  • Figure 2 is a side view of the device of Figure 1, partly in section; and
  • FIG. 3 shows an axial section through the device according to FIG. 1.

    • Die Figuren 1 bis 3 zeigen eine Vorrichtung nach der Erfindung zur Bemusterung eines Siebdruckzylinders in Übereinstimmung mit dem erfindungsgemäßen Verfahren.Figures 1 to 3 show a device according to the invention for sampling a screen printing cylinder in accordance with the invention Method.

    Gemäß Figur 1 besteht der Siebdruckzylinder 1 aus zwei Endringen 2 und 3, die eine Gaze 4 umfangsseitig tragen. Gegenüberliegende Seitenränder der Gaze 4 sind entlang der Umfangsränder der Endringe 2 und 3 mit diesen verklebt, wobei die aneinanderstoßenden Ränder der Gaze 4 ebenfalls, vorzugsweise durch Verklebung, miteinander verbunden sind, so daß die Endringe 2 und 3 zusammen mit der Gaze 4 den Siebdruckzylinder 1 bilden.According to Figure 1, the screen printing cylinder 1 consists of two end rings 2 and 3, which carry a gauze 4 on the circumference. Opposite margins the gauze 4 are along the peripheral edges of the end rings 2 and 3 with these glued, the abutting edges of the gauze 4 also preferably connected by gluing, so that the End rings 2 and 3 together with the gauze 4 form the screen printing cylinder 1.

    Eine zentrale Zylinderlängsachse 5 des Siebdruckzylinders 1 bzw. der Endringe 2 und 3 liegt koaxial zu einer drehbar gelagerten Welle 6 mit Wellenabschnitten 6a und 6b. Die Wellenabschnitte 6a und 6b sind starr miteinander verbunden. Dabei ist der Wellenabschnitt 6b in geeigneter Weise mit einem Drehantrieb gekoppelt.A central longitudinal axis 5 of the screen printing cylinder 1 or End rings 2 and 3 are coaxial with a rotatably mounted shaft 6 with shaft sections 6a and 6b. The shaft sections 6a and 6b are rigid with each other connected. The shaft section 6b is suitable coupled with a rotary drive.

    Auf dem Wellenabschnitt 6b befindet sich starr mit diesem verbunden ein Maschinenendring 7. Dieser Maschinenendring 7 sitzt fest auf dem Wellenabschnitt 6b und wird bei Drehung des Wellenabschnitts 6b von diesem entsprechend mitgenommen. Auf dem anderen Wellenabschnitt 6a sitzt ein weiterer Maschinenendring 8, der bei Drehung des Wellenabschnitts 6a von diesem entsprechend mitgedreht wird, der jedoch auf dem Wellenabschnitt 6a in dessen Längsrichtung verschiebbar ist. Zur Verschiebung des Maschinenendrings 8 entlang des Wellenabschnitts 6a dient eine Stellschraube 9, bei deren Drehung in der einen oder anderen Richtung der Maschinenendring 8 entlang des Wellenabschnitts 6a entsprechend vor- oder zurückbewegt wird.The shaft section 6b is rigidly connected to it Machine end ring 7. This machine end ring 7 sits firmly on the shaft section 6b and when the shaft section 6b rotates therefrom taken along accordingly. Sitting on the other shaft section 6a another machine end ring 8, which rotates when the shaft section 6a is rotated accordingly by the latter, but on the shaft section 6a is displaceable in its longitudinal direction. To postpone of the machine end ring 8 along the shaft section 6a is used Set screw 9, when it rotates in one direction or the other the machine end ring 8 along the shaft section 6a accordingly is moved forward or back.

    Wie weiter unten noch ausgeführt wird, ist der Maschinenendring 7 mit dem Endring 3 starr gekoppelt, während der Maschinenendring 8 mit dem Endring 2 starr gekoppelt ist. Die Kopplung erfolgt über Klemmringe 10 und 11, wie noch erläutert wird. Dabei bestehen die Klemmringe 10 und 11 jeweils aus einem Paar von Halbschalen, die an einem Ende über ein Scharnier miteinander verbunden sind und am anderen Ende einen Klemmverschluß aufweisen, so daß beim Verschließen der jeweiligen Klemmverschlüsse die Klemmringe 10 und 11 die jeweiligen Endringe 3, 7 bzw. 2, 8 klemmend zusammenhalten.As will be explained further below, the machine end ring 7 is included the end ring 3 rigidly coupled, while the machine end ring 8 with the End ring 2 is rigidly coupled. The coupling takes place via clamping rings 10 and 11, as will be explained. The clamping rings 10 and 11 exist each made up of a pair of half shells that overlap at one end Hinge are connected together and at the other end one Have clamp closure, so that when closing the respective Clamp closures, the clamping rings 10 and 11, the respective end rings 3, 7 or 2, 8 holding together.

    Der Siebdruckzylinder 1 wird so montiert, daß er bei abgenommenem Maschinenendring 8 zunächst auf die Welle 6 aufgesetzt wird, wonach der Endring 3 mit dem Maschinenendring 7 unter Verwendung des Klemmrings 10 miteinander verbunden werden. Dann wird der Maschinenendring 8 auf den Wellenabschnitt 6a aufgeschoben, und es werden unter Verwendung des Klemmrings 11 die Endringe 2 und 8 miteinander verklemmt. Die Stellschraube 9 wird so gedreht, daß sich der Maschinenendring 8 vom Maschinenendring 7 entfernt, um auf diese Weise die zwischen den Endringen 2 und 3 liegende Gaze 4 in Längsrichtung der Welle 6 zu spannen.The screen printing cylinder 1 is mounted so that it is removed with the machine end ring 8 is first placed on the shaft 6, after which the End ring 3 with the machine end ring 7 using the clamping ring 10 are interconnected. Then the machine end ring 8 pushed onto the shaft section 6a, and it will be under Using the clamping ring 11, the end rings 2 and 8 are clamped together. The set screw 9 is turned so that the machine end ring 8 removed from the machine end ring 7, in this way the between the end rings 2 and 3 lying gauze 4 in the longitudinal direction of the shaft 6 tighten.

    Auf der Welle 6 befindet sich ein Getriebegehäuse 12. Dieses Getriebegehäuse 12 ist raumfest angeordnet und wird bei Drehung der Welle 6 nicht mitgenommen. Dies wird weiter unten näher beschrieben. Mit dem Getriebegehäuse 12 ist eine Halterung 13 verbunden, die sich in Längsrichtung der Welle 6 erstreckt und in Richtung der Zylinderlängsachse 5 eine Länge aufweist, die etwa dem Innenabstand der Endringe 2 und 3 entspricht. Das Getriebegehäuse 12 sitzt in Längsrichtung der Welle 6 etwa mittig im Siebdruckzylinder 1, so daß die Halterung 13 das Getriebegehäuse 12 in Längsrichtung der Welle 6 nach beiden Seiten etwa gleich weit überragt. Zur Verschiebung der Halterung 13 senkrecht zur Zylinderlängsachse 5 sind in der Halterung radiale Längsschlitze 14 und 15 vorhanden, durch die Schrauben 16, 17 hindurchgeführt sind, welche fest in einen Ansatz 18 eingeschraubt sind, der mit dem Getriebegehäuse 12 fest verbunden ist. Durch Lösen der Schrauben 16, 17 läßt sich die Halterung 13 radial zur Zylinderlängsachse 5 justieren. Danach werden die Schrauben 16 und 17 wieder festgezogen.A gear housing 12 is located on shaft 6. This gear housing 12 is fixed in space and is not when the shaft 6 rotates taken. This is described in more detail below. With the gearbox 12 is connected to a bracket 13 which extends in the longitudinal direction the shaft 6 extends and in the direction of the cylinder longitudinal axis 5 a length has, which corresponds approximately to the inner distance of the end rings 2 and 3. The Gear housing 12 is located approximately in the longitudinal direction of the shaft 6 in the middle of the screen printing cylinder 1, so that the bracket 13, the gear housing 12 in The longitudinal direction of the shaft 6 projects approximately equally far on both sides. To move the bracket 13 perpendicular to the cylinder axis 5 there are radial longitudinal slots 14 and 15 in the holder the screws 16, 17 are passed, which are firmly in a shoulder 18th are screwed in, which is firmly connected to the gear housing 12. By loosening the screws 16, 17, the bracket 13 can be radially Adjust cylinder longitudinal axis 5. Then the screws 16 and 17 tightened again.

    Die Halterung 13 weist an ihren beiden freien Enden jeweils eine Lagereinrichtung 19 und 20 auf, die in Richtung zur Innenwand des Siebdruckzylinders 1 weisen. Zwischen den Lagereinrichtungen 19 und 20 ist eine Walze 21 über ihre Stirnseiten frei drehbar gelagert. Die Walze 21 weist einen über ihre Länge konstanten Durchmesser auf und erstreckt sich in Längsrichtung gesehen ebenfalls praktisch über die gesamte Länge der Halterung 13, sieht man von dem für die Lagereinrichtungen 19 und 20 benötigten Raum ab. Dabei liegt die Walze 21 bzw. deren Längsachse 22 parallel zur Zylinderlängsachse 5 . Fehlpositionierungen können mit Hilfe des oben beschriebenen Justiermechanismus aus den Langlöchern 14 und 15 und den Schrauben 16 und 17 ausgeglichen werden. Der Durchmesser der Walze 21 ist so gewählt, daß sie die Lagereinrichtungen 19 und 20 in Richtung zur Innenseite der Gaze 4 ein wenig überragt. Durch die Walze 21 wird somit erreicht, daß die Gaze 4 im Bereich der Walze 21 parallel zur Zylinderlängsachse 5 gehalten wird. Dabei kann die Walze 21 so weit radial nach außen gedrückt sein, daß die Gaze 4 auch die Endringe 2 und 3 ein wenig in Radialrichtung überragt. Wichtig ist, daß die Gaze 4 mit ihrer zu bemusternden Oberfläche praktisch über die gesamte Länge der Walze 21 und damit praktisch über die gesamte Länge des Siebdruckzylinders 1 parallel zur Welle 6 bzw. Zylinderlängsachse 5 zu liegen kommt.The bracket 13 has a bearing device at each of its two free ends 19 and 20 on towards the inner wall of the screen printing cylinder 1 point. Between the bearing devices 19 and 20 is a roller 21 freely rotatably supported on their end faces. The roller 21 has one constant diameter over its length and extends in the longitudinal direction also seen practically over the entire length of the bracket 13 can be seen from that required for the storage facilities 19 and 20 Space off. The roller 21 or its longitudinal axis 22 is parallel to the cylinder longitudinal axis 5. Mispositioning can be done with the help of the above described adjustment mechanism from the elongated holes 14 and 15 and the screws 16 and 17 are balanced. The diameter of the Roller 21 is selected so that the bearing devices 19 and 20 in the direction a little overhanging the inside of the gauze 4. Through the roller 21 is thus achieved that the gauze 4 in the region of the roller 21 parallel to the longitudinal axis of the cylinder 5 is held. The roller 21 can radially so far be pressed outwards that the gauze 4 also the end rings 2 and 3 slightly overlooked in the radial direction. It is important that the gauze 4 with her patterning surface practically over the entire length of the roller 21st and thus practically parallel over the entire length of the screen printing cylinder 1 comes to rest on shaft 6 or cylinder longitudinal axis 5.

    Der Walze 21 gegenüberliegend ist eine Bearbeitungsstation 23 angeordnet. Diese Bearbeitungsstation 23 ist in Längsrichtung der Zylinderlängsachse 5 verschiebbar gelagert und kann somit parallel zum Siebdruckzylinder 1 in demjenigen Bereich verschoben werden, in welchem die Gaze 4 die Walze 21 tangential beaufschlagt. Über die gesamte Länge der Walze 21 wird somit ein gleicher Abstand zwischen der Gaze 4 und der Bearbeitungsstation 23 sichergestellt. Die Konstanthaltung dieses Abstands über die Länge des Siebdruckzylinders ist wichtig, um im späteren Druckprozeß unter Verwendung des Siebdruckzylinders 1 einwandfreie Muster erzeugen zu können. A processing station 23 is arranged opposite the roller 21. This processing station 23 is in the longitudinal direction of the cylinder longitudinal axis 5 slidably mounted and can therefore be parallel to the screen printing cylinder 1 in the area in which the gauze 4 the roller 21 is applied tangentially. Over the entire length of the roller 21 is thus an equal distance between the gauze 4 and the processing station 23 ensured. Keeping this distance constant over The length of the screen printing cylinder is important in the later printing process create perfect patterns using the screen printing cylinder 1 to be able to.

    Die Bearbeitungsstation 23 ist auf einem Schlitten 24 montiert, der entlang von Führungsbahnen 25 verschiebbar ist, welche an einem Maschinenbett 26 der Vorrichtung montiert sind. Die Führungsbahnen 25 verlaufen dabei parallel zur Zylinderlängsachse 5. Führungsbahnen 25 und Maschinenbett 26 sind am besten in Figur 2 zu erkennen.The processing station 23 is mounted on a carriage 24 which runs along is slidable by guideways 25, which on a machine bed 26 of the device are mounted. The guideways 25 run parallel to the cylinder axis 5. Guideways 25 and Machine bed 26 can best be seen in FIG.

    Bei der Bearbeitungsstation 23 kann es sich um irgendeine geeignete Station handeln, mit der sich die Gaze 4 bemustern läßt. Beispielsweise kann die Bearbeitungsstation 23 ein Spritzkopf sein, mit dem sich ein flüssiges Medium oder ein viskoses Medium auf die Gaze 4 aufspritzen läßt, um deren Durchgangsöffnungen mustergemäß zu verschließen. Bei dem flüssigen Medium kann es sich um aushärtbare Tinte, Wachs oder gar um eine flüssige Metall-Legierung handeln. Entsprechend ist die Bearbeitungsstation 23 ausgestaltet. Die Bearbeitungsstation 23 kann aber auch eine optische Station sein, etwa eine solche zur Aussendung eines Laserstrahls, mit dem sich eine auf der Gaze 4 befindliche lichtempfindliche Schicht belichten läßt, die anschließend entwickelt wird, um die lichtempfindliche Schicht mustergemäß zu öffnen. Es könnte aber auch ein Laserstrahl ausgesandt werden, um direkt mit ihm eine auf der Gaze 4 befindliche Verschlußschicht musterbedingt abzutragen, also wegzubrennen. Nicht zuletzt könnte die Bearbeitungsstation 23 aber auch mehrere in Längsrichtung der Zylinderlängsachse 5 hintereinanderliegende Bearbeitungsbereiche aufweisen. Ein erster Bearbeitungsbereich könnte zum Beispiel eine auf der Gaze 4 liegende lichtempfindliche Schicht mit einem flüssigen und lichtundurchlässigen Medium bemustern, während ein zweiter Bearbeitungsbereich der Bearbeitungsstation 23 die so bemusterte lichtempfindliche Schicht belichtet. Weitere Ausführungsbeispiele wären denkbar. Wichtig ist nur, daß die Bearbeitungbzw. Bemusterung der Gaze immer im Bereich der tangentialen Berührung zwischen Gaze 4 und Walze 21 in Längsrichtung der Walze 21 und unter gleichem Abstand von Bearbeitungsstation 23 zur Walze 21 erfolgt. Nur auf diese Weise ist eine gute Reproduktion des Musters beim späteren Druckprozeß sichergestellt.The processing station 23 can be any suitable station act with which the gauze 4 can be sampled. For example the processing station 23 be a spray head with which a liquid Medium or a viscous medium sprayed onto the gauze 4 to Close through openings according to the pattern. With the liquid Medium can be curable ink, wax or even one act liquid metal alloy. The processing station is accordingly 23 designed. The processing station 23 can also be an optical one Station, such as one for emitting a laser beam, with which a light-sensitive layer located on the gauze 4 is exposed leaves, which is then developed to make the photosensitive Open layer according to pattern. A laser beam could also be emitted be directly with him a closure layer located on the gauze 4 to remove according to the pattern, i.e. to burn it away. Not least the processing station 23 could also have several in the longitudinal direction the cylinder longitudinal axis 5 processing areas lying one behind the other exhibit. A first processing area could be, for example on the gauze 4 lying photosensitive layer with a liquid and sample opaque medium during a second editing area the processing station 23 the patterned photosensitive Layer exposed. Further exemplary embodiments would be conceivable. It is only important that the processing or Sampling of the gauze always in Area of tangential contact between gauze 4 and roller 21 in Longitudinal direction of the roller 21 and at the same distance from the processing station 23 to the roller 21. Only in this way is a good reproduction the pattern in the later printing process.

    Die Figur 2 zeigt die erfindungsgemäße Vorrichtung von der Seite gesehen und teilweise im Schnitt. Gleiche Elemente wie in Figur sind mit den gleichen Bezugszeichen versehen und werden nicht nochmals beschrieben. Man erkennt, daß die Gaze 4 nur dort bemustert wird, wo sie die Walze 21 tangential berührt. In diesem Bereich ist eine einwandfreie Bemusterung gewährleistet, da nur dort die Gaze 4 immer einen konstanten Abstand zur Bearbeitungsstation 23 aufweist. Die Bemusterung der Gaze 4 erfolgt so, daß sich bei drehendem Siebdruckzylinder 1 die Bearbeitungsstation 23 in Längsrichtung der Walze 21 verschiebt.Figure 2 shows the device according to the invention seen from the side and partly in the cut. The same elements as in Figure are the same Reference numerals and are not described again. It can be seen that the gauze 4 is only patterned where it rolls the 21st touches tangentially. In this area there is a perfect sample ensures that only there the gauze 4 is always a constant distance from Processing station 23 has. The gauze 4 is sampled in such a way that with the screen printing cylinder 1 rotating, the processing station 23rd moves in the longitudinal direction of the roller 21.

    Die Figur 3 zeigt einen Axialschnitt durch den Siebdruckzylinder 1 im Bereich der Welle 6.FIG. 3 shows an axial section through the screen printing cylinder 1 in the area the wave 6.

    Die Wellenabschnitte 6a und 6b tragen über die Maschinenendringe 7 und 8 den Siebdruckzylinder 1, wie bereits erwähnt. Dabei umgreifen die Klemmringe 10 und 11 bzw. deren jeweilige Halbschalen radial nach außen stehende Ansätze 3a, 7a bzw. 2a, 8a von Endring 3 und Maschinenendring 7 bzw. Endring 2 und Maschinenendring 8, so daß auf diese Weise der Siebdruckzylinder 1 auf der Welle 6 gehalten wird. Die Halbschalen der Klemmringe 10 und 11 können abgeschwenkt werden, um den Siebdruckzylinder 1 freizugeben. Er kann dann nach Abnahme des Maschinenendrings 8 vom Wellenabschnitt 6a von der gesamten Welle 6 abgezogen werden.The shaft sections 6a and 6b carry over the machine end rings 7 and 8 the screen printing cylinder 1, as already mentioned. Thereby embrace the Clamping rings 10 and 11 or their respective half shells radially outwards standing approaches 3a, 7a and 2a, 8a of end ring 3 and machine end ring 7 or end ring 2 and machine end ring 8, so that in this way the screen printing cylinder 1 is held on the shaft 6. The half shells of the Clamping rings 10 and 11 can be swung out around the screen printing cylinder 1 to release. It can then be removed after removing the machine end ring 8 are deducted from the shaft section 6a from the entire shaft 6.

    Die Welle 6 ist rechtsseitig in Figur 3 auf einem Lagerbock 27 gelagert, der auf dem Maschinenbett 26 fest montiert ist. Das Maschinenbett 26 ist in Figur 3 nur schematisch angedeutet. Ein mit der Welle 6 fest verbundener Achsansatz 28 dient zum Antrieb der Welle 6 und ist mit einer nicht dargestellten Riemenscheibe fest verbunden, die über einen Riemen angetrieben wird.The shaft 6 is supported on the right side in FIG. 3 on a bearing block 27 which is firmly mounted on the machine bed 26. The machine bed 26 is in Figure 3 only indicated schematically. A firmly connected to the shaft 6 Axle shoulder 28 serves to drive the shaft 6 and is not shown Pulley firmly connected, driven by a belt becomes.

    Innerhalb des Wellenabschnitts 6b befindet sich eine außerhalb der Zylinderlängsachse 5 gelagerte Antriebsstange 29. Diese Antriebsstange 29 weist an ihren beiden gegenüberliegenden Enden jeweils ein fest mit ihr verbundenes Zahnrad 30 bzw. 31 auf. Bei Drehung der Welle 6 wird somit die Antriebsstange 29 im Abstand um die Zylinderlängsachse 5 herumbewegt. Bei dieser Bewegung kämmen die Zahnräder 30, 31 jeweils mit der Innenverzahnung eines Zahnkranzringes 32, 33. Der Zahnkranzring 32 ist fest im Getriebegehäuse 12 angeordnet, während der Zahnkranzring 33 fest im Lagerbock 27 angeordnet ist. Wird also die Welle 6 über den Achsansatz 28 gedreht, so dreht sich einerseits die Antriebsstange 29 um die Zylinderlängsachse 5 im Abstand herum, während andererseits die Antriebsstange 29 eine zusätzliche Eigenrotation ausführt, weil das Zahnrad 31 mit der Innenverzahnung des Zahnkranzes 33 kämmt. Letzteres ist fest angeordnet. Da hierbei auch das Zahnrad 30 entsprechend mitgenommen wird und mit der Innenverzahnung des Zahnkranzes 32 kämmt, bleibt das mit dem Zahnkranz 32 fest verbundene Getriebegehäuse 12 raumfest, und damit die mit dem Getriebegehäuse 12 verbundene Halterung 13 sowie die mit der Halterung 13 verbundene Walze 21, die sich lediglich um ihre Längsachse 22 frei drehen kann.Inside the shaft section 6b is an outside of the cylinder longitudinal axis 5 mounted drive rod 29. This drive rod 29 has a fixed with it at its two opposite ends connected gear 30 or 31. When the shaft 6 rotates the drive rod 29 moves around the cylinder longitudinal axis 5 at a distance. During this movement, the gears 30, 31 mesh with each Internal toothing of a ring gear 32, 33. The ring gear 32 is fixed in the gear housing 12, while the ring gear 33rd is fixedly arranged in the bearing block 27. So the shaft 6 over the axis approach 28 rotated, the drive rod 29 rotates on the one hand Longitudinal cylinder axis 5 at a distance, while on the other hand the drive rod 29 performs an additional self-rotation because the gear 31 meshes with the internal toothing of the ring gear 33. The latter is firm arranged. Since here the gear 30 is also carried accordingly is and meshes with the internal teeth of the ring gear 32, it remains with the ring gear 32 fixedly connected gear housing 12 fixed in space, and so that the bracket 13 connected to the gear housing 12 and the with the bracket 13 connected roller 21, which is only about their Longitudinal axis 22 can rotate freely.

    Drehen sich also Welle 6 und Siebdruckzylinder 1 um die Zylinderlängsachse 5, so bleibt die Walze 21 raumstabil, behält also hinsichtlich ihrer Längsachse 22 eine vorbestimmte Winkellage bei. Die Walze 21 kommt also bei Drehung des Siebdruckzylinders 1 um die Zylinderlängsachse 5 immer gegenüber der Bearbeitungsstation 23 zu liegen.So shaft 6 and screen printing cylinder 1 rotate about the cylinder's longitudinal axis 5, the roller 21 remains dimensionally stable, so retains with regard to it Longitudinal axis 22 at a predetermined angular position. So the roller 21 comes when the screen printing cylinder 1 is rotated about the cylinder longitudinal axis 5 always to lie opposite the processing station 23.

    Claims (11)

    1. Method of producing a screen-printing cylinder (1), having the following steps:
      a) a cover (4) of the screen-printing cylinder (1) is formed only by a flexible mesh which is held by two end rings (2, 3) and is permeable to liquids or pasty compounds;
      b) the end rings (2, 3) are situated coaxially on a shaft (6) which is mounted such that it can rotate and by which they are carried along during rotation;
      c) the cover (4) is tensioned by the end rings (2, 3) being displaced away from each other;
      d) a support (21) which is situated on one side of the shaft (6) and extends at least approximately over the entire length of the screen-printing cylinder (1) presses the cover (4) from the inside into a position lying parallel to the shaft (6);
      e) during rotation of the shaft (6), the support (21) is held in a physically stable manner; and
      f) the screen-printing cylinder (1) is patterned from the outside during its rotation only in the region of this support (21) by means of a processing station (23) which is displaced parallel to the shaft (6).
    2. Method according to Claim 1, characterized in that the support (21) used is a roll, whose longitudinal axis (22) is parallel to the shaft (6) .
    3. Method according to Claim 1 or 2, characterized in that in order to pattern the cover (4), a covering liquid is applied directly to the latter in accordance with a pattern.
    4. Method according to Claim 1 or 2, characterized in that in order to pattern the cover (4), a light-sensitive layer situated on it is exposed in accordance with a pattern, and developed.
    5. Method according to Claim 4, characterized in that before being exposed, the light-sensitive layer is patterned using an opaque covering liquid.
    6. Method according to Claim 1 or 2, characterized in that in order to pattern the cover (4) a layer situated on it is removed by irradiation in accordance with a pattern.
    7. Method according to Claim 1, characterized in that a mesh (4) consisting of nylon, polyester or another polymer is used.
    8. Apparatus for producing a screen-printing cylinder (1), comprising:
      a) machine end rings (7, 8) arranged on a rotatable shaft (6) to hold the screen-printing cylinder (1) at the ends, coaxially with respect to the shaft (6);
      b) a tensioning device (8, 9) for tensioning the screen-printing cylinder (1) in the longitudinal direction of the shaft (6);
      c) a support (21) which is situated inside and on only one side of the shaft (6) and extends at least approximately over the entire length of the screen-printing cylinder (1), which presses the cover (4) of the screen-printing cylinder (1) into a position lying parallel to the shaft (6),
      d) the support (21) being seated on the shaft (6) via a mechanism (29, 30, 32) which holds it in a physically stable manner during rotation of the shaft (6); and
      e) a processing station (23) for patterning the screen-printing cylinder (1) from the outside, which is positioned opposite the support (21) and can be displaced parallel to the shaft (6).
    9. Apparatus according to Claim 8, characterized in that the support (21) is a roll that can rotate about its longitudinal axis.
    10. Apparatus according to one of Claims 8, 9, characterized in that the processing station (23) has a spray head for spraying out liquids or viscous media.
    11. Apparatus according to one of Claims 8, 9, characterized in that the processing station (23) has an exposure head or irradiation head.
    EP99117201A 1999-09-01 1999-09-01 Method and apparatus for making a cylinder stencyl Expired - Lifetime EP1080885B1 (en)

    Priority Applications (8)

    Application Number Priority Date Filing Date Title
    EP99117201A EP1080885B1 (en) 1999-09-01 1999-09-01 Method and apparatus for making a cylinder stencyl
    DE59908113T DE59908113D1 (en) 1999-09-01 1999-09-01 Method and device for producing a screen printing cylinder
    AT99117201T ATE256554T1 (en) 1999-09-01 1999-09-01 METHOD AND DEVICE FOR PRODUCING A SCREEN PRINTING CYLINDER
    ES99117201T ES2212435T3 (en) 1999-09-01 1999-09-01 PROCEDURE AND DEVICE FOR MANUFACTURING A CYLINDER FOR SERIGRAPHY.
    TR2000/02492A TR200002492A3 (en) 1999-09-01 2000-08-25 Production method and apparatus of a screen printing roller
    MXPA00008481A MXPA00008481A (en) 1999-09-01 2000-08-30 Method and apparatus for making a cylinder stencyl.
    BR0003975-6A BR0003975A (en) 1999-09-01 2000-09-01 Method and apparatus for producing a cylinder for screen printing
    CNB001243179A CN1170675C (en) 1999-09-01 2000-09-01 Method and apparatus for making drum for screen print

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP99117201A EP1080885B1 (en) 1999-09-01 1999-09-01 Method and apparatus for making a cylinder stencyl

    Publications (2)

    Publication Number Publication Date
    EP1080885A1 EP1080885A1 (en) 2001-03-07
    EP1080885B1 true EP1080885B1 (en) 2003-12-17

    Family

    ID=8238904

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99117201A Expired - Lifetime EP1080885B1 (en) 1999-09-01 1999-09-01 Method and apparatus for making a cylinder stencyl

    Country Status (8)

    Country Link
    EP (1) EP1080885B1 (en)
    CN (1) CN1170675C (en)
    AT (1) ATE256554T1 (en)
    BR (1) BR0003975A (en)
    DE (1) DE59908113D1 (en)
    ES (1) ES2212435T3 (en)
    MX (1) MXPA00008481A (en)
    TR (1) TR200002492A3 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN103802445B (en) * 2014-02-20 2015-11-04 成都印钞有限公司 Clamping device of a kind of bank note edition and preparation method thereof
    CN104527227B (en) * 2014-12-10 2017-01-11 成都印钞有限公司 Stencil clamping sizing device and sizing method thereof
    CN105206174A (en) * 2015-09-10 2015-12-30 东莞市雷崴电子有限公司 Manufacture method of battery label

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1208109A (en) * 1967-01-20 1970-10-07 Aljaba Ltd Improvements in or relating to rotary screen printing cylinders
    EP0641649A1 (en) * 1993-09-04 1995-03-08 Kissel & Wolf GmbH Process for stripping a stencil coating on screen printing forms and device for implementing this process
    ATE165768T1 (en) * 1994-02-02 1998-05-15 Schablonentechnik Kufstein Ag METHOD AND DEVICE FOR PRODUCING A SCREEN PRINTING STENCIL
    EP0792059A1 (en) * 1996-02-21 1997-08-27 Schablonentechnik Kufstein Aktiengesellschaft Method and apparatus for fabricating a stencil printing sheet

    Also Published As

    Publication number Publication date
    ES2212435T3 (en) 2004-07-16
    CN1288817A (en) 2001-03-28
    MXPA00008481A (en) 2005-06-30
    EP1080885A1 (en) 2001-03-07
    BR0003975A (en) 2001-11-20
    DE59908113D1 (en) 2004-01-29
    TR200002492A2 (en) 2001-04-20
    TR200002492A3 (en) 2001-04-20
    ATE256554T1 (en) 2004-01-15
    CN1170675C (en) 2004-10-13

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