EP0426014B1 - Device for applying a substance to a web of material - Google Patents
Device for applying a substance to a web of material Download PDFInfo
- Publication number
- EP0426014B1 EP0426014B1 EP90120525A EP90120525A EP0426014B1 EP 0426014 B1 EP0426014 B1 EP 0426014B1 EP 90120525 A EP90120525 A EP 90120525A EP 90120525 A EP90120525 A EP 90120525A EP 0426014 B1 EP0426014 B1 EP 0426014B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- squeegee
- roller
- end plates
- supporting bar
- doctor
- 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
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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
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
Definitions
- the invention relates to a device for applying a substance to a web by means of a magnetically pressed squeegee, wherein a supporting beam parallel to the squeegee carries axial limiting parts for the squeegee in the form of end plates extending normal to the supporting bar, and that the connection between the supporting bar and the end plate is actuated a handle is detachable.
- the advantage of the magnetic pressure of the doctor blade lies primarily in the fact that the pressure force of the doctor blade does not have to be introduced into it via lateral bearings, so that the doctor blade does not bend. Nevertheless, limiting parts for their movement make sense even when the doctor is pressed magnetically.
- Lateral end plates which usually serve at the same time to delimit the ink sump, can cooperate, for example, with a magnetically pressed doctor blade, in that they position a doctor blade roller exactly normal to the web direction by means of inclined surfaces.
- the squeegee rollers can be loosely guided in end plates arranged on the side of the support bar, so that they can be easily removed from the template after the application process has ended.
- Thin rollers are guided directly in a hole in the end plates that is open at the bottom, thicker rollers are provided with side journals, which are undercut by the end plates.
- magnetically pressed doctor blades can also be guided in vertical guide grooves of the end plates, with either the cross section of the doctor blade as such fitting into the guide groove or the doctor blade being provided with lateral guide pins.
- the variety of possible end plates is further increased by the fact that these can optionally also be magnetically attractable or displaceable in the vertical direction.
- a device has become known from WO88 / 09725 in which the end plates are pulled off the side of the carrying bar after loosening two screws (handles).
- the carrying bar does not have to be replaced as a result.
- a disadvantage of the known device is that a lateral removal of the end plates presupposes that the ends of the support bar are free.
- the invention provides a possibility of quickly and perpendicularly pulling off the end plates perpendicular to the direction of the support beam even when the support beam is installed.
- a pin is provided on the end plate, which can be pulled against the force of a spring by means of the handle from a slot into which a protruding from the support bar, parallel to the support bar, which is penetrated by the pin, can be inserted.
- doctoring devices with doctoring rollers which are cone-shaped at the ends and are connected to the end plates in such a way that the doctoring roller does not have any of the possible spatial arrangements of the doctoring device, that is to say neither in the installed state nor when or dismantling or transport, can be involuntarily separated from the support beam.
- the pin-shaped end of the roller doctor engages in a cage adjoining the end plate and is held in this by a cage cover, which in turn is held in place by a plug pin on the End plate is secured.
- the interchangeability of the end plate itself allows the doctor blade in one To store recess of the end plate, as is known per se from DE-U-87 13 787. Since the end plates are not easily removable there, however, horizontal slots have to be connected to the recesses which receive the end pins of the doctor blade, through which the bearing pins of the doctor roller are guided during insertion. In operation, the bearing journals are located lower than these lateral slots, so that there is no fear of the roller doctor being inadvertently lost. When the roller doctor device is rotated around the spar that carries the end plates, the doctor roller can fall out of the holder and thereby damage the surrounding circular templates. This possibility also exists when the roller doctor device is inserted and when it is removed, so that there are concerns in the known device against handling the roller doctor device together with the doctor roller.
- FIG. 1 is a view of a support beam with an end plate attached thereto
- FIG. 2 shows the inside view of the end plate from FIG. 1
- FIG. 3 shows a horizontal section through the recess 3 in FIG. 1
- FIG. 4 shows the assembly of the device according to FIG . 1.
- the device shown in Fig. 1 is used to apply a substance to a base 7 by means of a doctor roller 1, which is arranged by a magnet, not shown, arranged below the base 7 is attracted.
- a doctor roller 1 which is arranged by a magnet, not shown, arranged below the base 7 is attracted.
- Such devices are known and are not described in detail here.
- the end plates 4 which not only form a side boundary for the substance to be applied, but also allow the exact alignment of the doctor roller 1 normal to the direction of movement of the base 7 due to the inclined surfaces 6 at the bottom of the recess 3.
- the end plates 4 allow the squeegee roller 1, which is loosely guided in the recess 3, to be lifted out together with the carrying spar 9 after the machining process has ended, or to pivot it.
- the length of the doctor roller 1 and the pin 2 and the recesses 3 for the pin 2 are dimensioned so that the doctor roller 1 can not fall out of the recesses 3 in any position.
- the end plate 4 can be displaced vertically in relation to the support bar 9 between a sheet metal 10 running vertically in the machining direction and a guide plate 11 and can be detached from the support bar 9 by means of the handle 12.
- the end plate 4 has a slot 13, which is penetrated by a pin 14. This pin can be retracted against the force of a spring 17, which is supported on the one hand on a fixed plug 18 and on the other hand on a movable disk 19. This is the end plate 4 easily detachable by means of the handle 12.
- the end plate 4 carrying the doctor roller 1 is pushed onto the fastening plate 15 in the direction thereof until the pin 14 penetrates the opening 16 in the fastening plate 15. Since this opening 16 only loosely surrounds the pin 14, there is a certain vertical mobility for the end plate. In the lateral direction, this is secured by the plate 10 and by the guide plate 11 on the mounting plate 15. A magnetizable plate on the outside of the end part 4 allows it to be pressed against the base 7.
Abstract
Description
Die Erfindung bezieht sich auf eine Einrichtung zum Auftragen einer Substanz auf eine Warenbahn mittels einer magnetisch angepreßten Rakel, wobei ein zur Rakel paralleler Tragholm axiale Begrenzungsteile für die Rakel in Form normal zum Tragholm verlaufender Endplatten trägt, und daß die Verbindung zwischen Tragholm und Endplatte durch Betätigung eines Handgriffes lösbar ist.The invention relates to a device for applying a substance to a web by means of a magnetically pressed squeegee, wherein a supporting beam parallel to the squeegee carries axial limiting parts for the squeegee in the form of end plates extending normal to the supporting bar, and that the connection between the supporting bar and the end plate is actuated a handle is detachable.
Der Vorteil der magnetischen Anpressung von Rakeln liegt vor allem darin, daß die Anpreßkraft der Rakel nicht über seitliche Lager in diese eingeführt werden muß, sodaß es bei nicht zur Durchbiegung der Rakel kommt. Dennoch sind auch bei magnetischer Anpressung von Rakeln Begrenzungsteile für deren Bewegung sinnvoll. Seitliche Endplatten, welche üblicherweise gleichzeitig zur Begrenzung des Farbsumpfes dienen, können beispielsweise mit einer magnetisch angepreßten Rakel zusammenwirken, indem sie mittels Schrägflächen eine Rakelrolle genau normal zur Bahnrichtung stellen. Außerdem können die Rakelrollen in seitlich am Tragholm angeordneten Endplatten lose geführt sein, sodaß sie nach Beendigung des Auftragsvorganges leicht aus der Schablone entfernt werden können. Dünne Rollen sind dabei direkt in einer nach unten offenen Bohrung der Endplatten geführt, dickere Rollen werden mit seitlichen Achszapfen versehen, welche von den Endplatten untergriffen werden. Alternativ zu Rollrakeln können auch magnetisch angepreßte Streichrakeln in vertikalen Führungsnuten der Endplatten geführt sein, wobei entweder der Querschnitt der Streichrakel als solcher in die Führungsnut paßt oder die Streichrakel mit seitlichen Führungszapfen versehen ist. Die Vielfalt der möglichen Endplatten wird noch dadurch erhöht, daß diese wahlweise auch magnetisch anziehbar oder in Vertikalrichtung verschiebbar sein können.The advantage of the magnetic pressure of the doctor blade lies primarily in the fact that the pressure force of the doctor blade does not have to be introduced into it via lateral bearings, so that the doctor blade does not bend. Nevertheless, limiting parts for their movement make sense even when the doctor is pressed magnetically. Lateral end plates, which usually serve at the same time to delimit the ink sump, can cooperate, for example, with a magnetically pressed doctor blade, in that they position a doctor blade roller exactly normal to the web direction by means of inclined surfaces. In addition, the squeegee rollers can be loosely guided in end plates arranged on the side of the support bar, so that they can be easily removed from the template after the application process has ended. Thin rollers are guided directly in a hole in the end plates that is open at the bottom, thicker rollers are provided with side journals, which are undercut by the end plates. As an alternative to roller doctor blades, magnetically pressed doctor blades can also be guided in vertical guide grooves of the end plates, with either the cross section of the doctor blade as such fitting into the guide groove or the doctor blade being provided with lateral guide pins. The variety of possible end plates is further increased by the fact that these can optionally also be magnetically attractable or displaceable in the vertical direction.
Aus WO88/09725 ist eine Einrichtung bekannt geworden, bei welcher die Endplatten nach Lösen zweier Schrauben (Handgriffe) seitlich vom Tragholm abgezogen werden. Beim Wechsel des Rakeldurchmessers oder der Rakelart, und damit der Endplatten, muß dadurch nicht auch der Tragholm ausgewechselt werden. Nachteilig an der bekannten Einrichtung ist jedoch, daß ein seitliches Abziehen der Endplatten voraussetzt, daß die Enden des Tragholmes frei sind. Die Erfindung sieht demgegenüber eine Möglichkeit vor, die Endplatten auch bei eingebautem Tragholm rasch und senkrecht zur Richtung des Tragholmes abzuziehen. Dies wird dadurch erreicht, daß an der Endplatte ein Zapfen vorgesehen ist, der gegen die Kraft einer Feder mittels des Handgriffes aus einem Schlitz herausziehbar ist, in welchen ein vom Tragholm abstehendes, zum Tragholm paralleles Befestigungsblech, das vom Zapfen durchsetzt wird, einführbar ist.A device has become known from WO88 / 09725 in which the end plates are pulled off the side of the carrying bar after loosening two screws (handles). When changing the doctor blade diameter or the doctor blade type, and thus the end plates, the carrying bar does not have to be replaced as a result. A disadvantage of the known device, however, is that a lateral removal of the end plates presupposes that the ends of the support bar are free. In contrast, the invention provides a possibility of quickly and perpendicularly pulling off the end plates perpendicular to the direction of the support beam even when the support beam is installed. This is achieved in that a pin is provided on the end plate, which can be pulled against the force of a spring by means of the handle from a slot into which a protruding from the support bar, parallel to the support bar, which is penetrated by the pin, can be inserted.
Besonders vorteilhat ist die Anwendung der Erfindung bei Rakelgeräten mit Rakelrollen, die an den Enden zapfenförmig ausgebildet sind und derart mit den Endplatten in Verbindung stehen, daß die Rakelrolle in keiner der möglichen räumlichen Anordnungen des Rakelgerätes, also weder in eingebautem Zustand, noch beim Ein- oder Ausbauen oder Transport, unwillkürlich vom Tragholm getrennt werden kann. Soweit solche Einrichtungen bisher überhaupt bekannt geworden sind (vgl. WO88/09725), ist vorgesehen, daß das zapfenförmige Ende der Rollrakel in einen an die Endplatte anschließenden Käfig eingreift und in diesem durch einen Käfigdeckel gehalten ist, der seinerseits wiederum durch einen Steckbolzen an der Endplatte gesichert ist. Die erfindungsgemäß vorgesehene Auswechselbarkeit der Endplatte selbst erlaubt es demgegenüber, die Rakel in einer Ausnehmung der Endplatte zu lagern, wie dies an sich aus DE-U-87 13 787 bekannt ist. Da dort die Endplatten nicht leicht entfernbar sind, müssen jedoch an die Ausnehmungen, welche die endseitigen Zapfen der Rakel aufnehmen, horizontale Schlitze anschließen, durch welche die Lagerungszapfen der Rakelrolle beim Einlegen geführt werden. Im Betrieb befinden sich die Lagerungszapfen tiefer als diese seitlichen Schlitze, sodaß ein unabsichtliches Verlieren der Rollrakel nicht zu befürchten ist. Bei einem Verdrehen des Rollrakelgerätes um den die Endplatten tragenden Holm kann die Rakelrolle jedoch aus der Halterung fallen und dabei die umgebenden Rundschablonen beschädigen. Auch beim Einlegen des Rollrakelgerätes und beim Entfernen desselben besteht diese Möglichkeit, sodaß bei der bekannten Einrichtung Bedenken dagegen bestehen, das Rollrakelgerät zusammen mit der Rakelrolle zu handhaben.The use of the invention is particularly advantageous for doctoring devices with doctoring rollers which are cone-shaped at the ends and are connected to the end plates in such a way that the doctoring roller does not have any of the possible spatial arrangements of the doctoring device, that is to say neither in the installed state nor when or dismantling or transport, can be involuntarily separated from the support beam. As far as such devices have become known (cf. WO88 / 09725), it is provided that the pin-shaped end of the roller doctor engages in a cage adjoining the end plate and is held in this by a cage cover, which in turn is held in place by a plug pin on the End plate is secured. The interchangeability of the end plate itself, according to the invention, allows the doctor blade in one To store recess of the end plate, as is known per se from DE-U-87 13 787. Since the end plates are not easily removable there, however, horizontal slots have to be connected to the recesses which receive the end pins of the doctor blade, through which the bearing pins of the doctor roller are guided during insertion. In operation, the bearing journals are located lower than these lateral slots, so that there is no fear of the roller doctor being inadvertently lost. When the roller doctor device is rotated around the spar that carries the end plates, the doctor roller can fall out of the holder and thereby damage the surrounding circular templates. This possibility also exists when the roller doctor device is inserted and when it is removed, so that there are concerns in the known device against handling the roller doctor device together with the doctor roller.
Durch die erfindungsgemäße Möglichkeit, die Endplatten des Gerätes rasch zu entfernen, wird es somit sinnvoll, eine Rakelrolle unverlierbar an den Endplatten selbst zu lagern.Because of the possibility according to the invention of quickly removing the end plates of the device, it is therefore sensible to store a doctor roll captively on the end plates themselves.
Beispiele für die konstruktive Durchführung des der Erfindung zugrundeliegenden Gedankens werden anhand der Zeichnung erläutert.Examples of the constructive implementation of the idea on which the invention is based are explained with the aid of the drawing.
Fig. 1 ist die Ansicht eines Tragholms mit daran befestigter Endplatte, Fig. 2 die Innenansicht der Endplatte von Fig. 1, Fig. 3 ein Horizontalschnitt durch die Ausnehmung 3 in Fig. 1, und Fig. 4 zeigt die Montage der Einrichtung nach Fig. 1.1 is a view of a support beam with an end plate attached thereto, FIG. 2 shows the inside view of the end plate from FIG. 1, FIG. 3 shows a horizontal section through the
Die in Fig. 1 dargestellte Einrichtung dient zum Auftragen einer Substanz auf eine Unterlage 7 mittels einer Rakelrolle 1, welche durch einen unterhalb der Unterlage 7 angeordneten, nicht dargestellten Magneten angezogen wird. Derartige Einrichtungen sind bekannt und werden hier nicht näher beschrieben.The device shown in Fig. 1 is used to apply a substance to a
Unerwünschte horizontale Auslenkungen der Rakelrolle 1 in Arbeitsrichtung werden durch eine elastische Stützlippe 8 verhindert, welche mit dem quer zur Bearbeitungsrichtung verlaufenden Tragholm 9 dauerhaft verbunden ist. Wesentlich für die Erfindung sind die Endplatten 4, welche nicht nur eine Seitenbegrenzung für die aufzutragende Substanz bilden, sondern auch durch die Schrägflächen 6 am Grunde der Ausnehmung 3 die exakte Ausrichtung der Rakelrolle 1 normal zur Bewegungsrichtung der Unterlage 7 erlauben. Insbesondere erlauben es die Endplatten 4, die lose in der Ausnehmung 3 geführte Rakelrolle 1 nach Beendigung des Bearbeitungsvorganges samt dem Tragholm 9 auszuheben oder um diesen zu verschwenken. Die Länge der Rakelrolle 1 und der Zapfen 2 sowie die Ausnehmungen 3 für die Zapfen 2 sind so dimensioniert, daß die Rakelrolle 1 in keiner Lage aus den Ausnehmungen 3 herausfallen kann.Unwanted horizontal deflections of the
Die Endplatte 4 ist zwischen einem vertikal in Bearbeitungsrichtung verlaufenden Blech 10 und einer Führungsplatte 11 vertikal gegenüber dem Tragholm 9 verschiebbar und mittels des Handgriffes 12 vom Tragholm 9 lösbar.The
Im Detail ergibt sich die lösbare Befestigung und die Verschiebbarkeit der Endplatte 4 aus Fig. 2 und 4.The detachable fastening and the displaceability of the
Wie aus Fig. 2 ersichtlich ist, weist die Endplatte 4 einen Schlitz 13 auf, welcher von einem Zapfen 14 durchdrungen wird. Dieser Zapfen kann gegen die Kraft einer Feder 17 zurückgezogen werden, welche sich einerseits an einem feststehenden Stöpsel 18, andererseits an einer beweglichen Scheibe 19 abstützt. Dadurch ist die Endplatte 4 leicht mittels des Handgriffes 12 lösbar.As can be seen from FIG. 2, the
Wie aus Fig. 4 ersichtlich, wird die die Rakelrolle 1 tragende Endplatte 4 in Richtung des Befestigungsbleches 15 auf dieses aufgeschoben, bis der Zapfen 14 die Öffnung 16 im Befestigungsblech 15 durchdringt. Da diese Öffnung 16 den Zapfen 14 nur lose umschließt, besteht eine gewisse vertikale Beweglichkeit für die Endplatte. In seitlicher Richtung ist diese durch das Blech 10 und durch die Führungsplatte 11 am Befestigungsblech 15 gesichert. Eine magnetisierbare Platte an der Außenseite des Endteiles 4 erlaubt dessen Anpressung gegen die Unterlage 7.As can be seen from FIG. 4, the
Claims (3)
- Device for applying a substance to a material web by means of a magnetically applied squeegee, wherein a supporting bar (9) parallel to the squeegee carries axial limiting parts for the squeegee in the form of end plates (4) extending normally with respect to the supporting bar (9), and that the connection between the supporting bar (9) and end plate (4) can be released by the operation of a handle (12), characterised in that a pin (14) is provided on the end plate (4), which, against the force of a spring (17), can be withdrawn by means of the handle (12) from a slot (13) into which a fixing plate (15) distanced from the supporting bar (9) and parallel to the supporting bar (9), and which is penetrated by the pin (14), can be introduced.
- Device according to claim 1, characterised in that the squeegee is configured as a squeegee roller (1), which is provided on its ends with pins (2) which protrude into recesses (3) in the end plates (4), wherein the length of the squeegee roller (1) and the pins (2) as well as the recesses (3) for the pins are dimensioned so that the squeegee cannot fall out of the recesses (3) in any position.
- Device according to claim 1 or 2, characterised in that on the surface located on the base of the recess (3) is configured entirely or at least in part diagonally with respect to the axis of the squeegee roller (1).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8912899U | 1989-10-28 | ||
| DE8912899U DE8912899U1 (en) | 1989-10-28 | 1989-10-28 | |
| DE9003129U | 1990-03-15 | ||
| DE9003129U DE9003129U1 (en) | 1990-03-15 | 1990-03-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0426014A2 EP0426014A2 (en) | 1991-05-08 |
| EP0426014A3 EP0426014A3 (en) | 1991-07-17 |
| EP0426014B1 true EP0426014B1 (en) | 1994-12-21 |
Family
ID=25955466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90120525A Expired - Lifetime EP0426014B1 (en) | 1989-10-28 | 1990-10-26 | Device for applying a substance to a web of material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0426014B1 (en) |
| AT (1) | ATE115914T1 (en) |
| DE (1) | DE59008077D1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919097A (en) * | 1956-08-22 | 1959-12-29 | Ivan C Bohlman | Holding device |
| DE8709029U1 (en) * | 1987-06-30 | 1988-11-03 | Zimmer, Johannes, Klagenfurt, Kaernten, At |
-
1990
- 1990-10-26 EP EP90120525A patent/EP0426014B1/en not_active Expired - Lifetime
- 1990-10-26 DE DE59008077T patent/DE59008077D1/en not_active Expired - Fee Related
- 1990-10-26 AT AT90120525T patent/ATE115914T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE115914T1 (en) | 1995-01-15 |
| EP0426014A3 (en) | 1991-07-17 |
| EP0426014A2 (en) | 1991-05-08 |
| DE59008077D1 (en) | 1995-02-02 |
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