EP0311743B1 - Squeegee device - Google Patents

Squeegee device Download PDF

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Publication number
EP0311743B1
EP0311743B1 EP88107936A EP88107936A EP0311743B1 EP 0311743 B1 EP0311743 B1 EP 0311743B1 EP 88107936 A EP88107936 A EP 88107936A EP 88107936 A EP88107936 A EP 88107936A EP 0311743 B1 EP0311743 B1 EP 0311743B1
Authority
EP
European Patent Office
Prior art keywords
profile member
squeegee
longitudinal axis
pivot bearing
bearing
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
EP88107936A
Other languages
German (de)
French (fr)
Other versions
EP0311743A1 (en
Inventor
Johannes Zimmer
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.)
Individual
Original Assignee
Individual
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 claimed from DE8713789U external-priority patent/DE8713789U1/en
Priority claimed from EP87730128A external-priority patent/EP0311730B1/en
Priority claimed from EP87730126A external-priority patent/EP0311728B1/en
Application filed by Individual filed Critical Individual
Priority to AT88107936T priority Critical patent/ATE69981T1/en
Publication of EP0311743A1 publication Critical patent/EP0311743A1/en
Application granted granted Critical
Publication of EP0311743B1 publication Critical patent/EP0311743B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B05C11/042—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/044—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for holding the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/045—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by the blades themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts
    • B41F15/084—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts simultaneously printing on two sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B41F15/426—Inking units comprising squeegees or doctors the squeegees or doctors being magnetically attracted

Definitions

  • the invention relates to a doctor blade device for applying application material such as foamable substances of different viscosities, coating materials, lacquers, adhesives, pastes or the like. on an application surface (substrate) with at least one doctor-magnet-extending doctor blade that extends in the length of the doctor device, the doctor device comprising a profile body with its longitudinal axis extending in the direction of the longitudinal axis of the doctor blade and a pivot bearing articulating the profile body, and wherein the doctor blade and / or the profile body at least partially consist of magnetically acting parts.
  • application material such as foamable substances of different viscosities, coating materials, lacquers, adhesives, pastes or the like.
  • Such a squeegee device in which the squeegee is optionally also formed with a nozzle integrated in it, is used in machines for flat stencil printing, for round stencil applications and / or devices for stencilless full-area applications, the application width or the doctor extension in particular can be several meters.
  • sample applications printing
  • full-surface applications e.g. impregnation, coating, dyeing, painting
  • a squeegee used in each case and / or a squeegee device comprising it are of significant importance with regard to the handling and application options of an application device and with regard to the substance application result.
  • a squeegee holder provided as a profile round rod is provided with a pivot bearing which has an adjusting mechanism arranged in a carrier body and having a gear mechanism for the optional but firmly adjustable rotation of the profile round rod about an axis lying transversely to the working direction includes.
  • the carrier body is movably supported transversely to the work surface via a paint tube by means of a straight guide on a machine frame.
  • a doctor blade clamped in the doctor blade holder is rigidly connected to the ink tube via the carrier body, the device parts extending in the longitudinal direction of the doctor blade also being rigidly connected to one another.
  • the total weight of the ink tube, carrier body, swivel gear and doctor blade holder is supported by the doctor blade.
  • the loading of the doctor blade with the weight of the entire doctor device leads along the application width to curvatures and possibly to uncontrolled permanent bending and thus to damage, transverse positions and / or incorrect positions of the doctor blade, so that the quality of the application result when starting an application device, but also is significantly impaired during operation due to sudden irregularities along the application area and may even be unusable.
  • doctor blade curvatures have considerable adverse effects on the printing result.
  • a time-consuming and costly readjustment of the doctor device and / or even the replacement of destroyed doctor blades is necessary.
  • the invention is based on the object to provide a squeegee device comprising at least one magnetically compressible squeegee with a pivot bearing which ensures canting-free, bending-free and pressure-accurate self-adjustment and alignment of the squeegee to an application surface.
  • the pivot bearing is arranged and designed as on the profile body forming or guiding the doctor blade in such a way that the profile body has at least one pivot axis perpendicular to its longitudinal axis relative to a position parallel to the application surface is freely tiltable.
  • the doctor blade profile body according to the invention with free pivot bearing about at least one axis perpendicular to the longitudinal axis of the profile body ensures a tension-free and tilt-free self-adjusting alignment of the doctor blade over the length of the device (application width).
  • the pivot bearing comprises a multiple pivot bearing with which the profile body can also be freely pivoted about at least one axis parallel to its longitudinal axis.
  • the pivot bearing comprises a multiple pivot bearing with which the profile body can be pivoted freely in all spatial directions. In this way, free adjustment and alignment of the squeegee is ensured along all working positions.
  • the pivot bearing is designed in the form of a ball-and-socket joint or an eyelet joint that has hooked-in eyelets.
  • the pivot bearing can also be expedient for the pivot bearing to comprise link bearings arranged in the region of the longitudinal ends of the profile body, the profile body being held with arms, each in the side link bearing in directions transverse and longitudinally to the longitudinal axis of the profile body are kept mobile.
  • the arms in the respective link bearing are advantageously held so as to be pivotable about an axis parallel to the longitudinal axis of the profile body to be able to freely adjust the effective squeegee area and / or the magnetically effective mass of the squeegee or profile body by changing the inclination of these elements to the application area.
  • a special design of the link pivot bearing further consists in the fact that each arm is held so as to be pivotable about its axis of extension.
  • the pivot bearing is arranged on a guide bearing with which the pivot bearing can be moved in at least one direction perpendicular to the longitudinal axis of the profile body. Due to the pivot bearing, which comprises several degrees of freedom, any irregularities in the bearing arrangement that may occur are automatically compensated for. This can be carried out relatively easily, since the accuracy does not have to be too high.
  • the invention provides that the pivot point or the pivot points of the pivot bearing are arranged in a plane which perpendicularly intersects the longitudinal axis of the profile body and in which the pivot point of the profile body lies, the pivot bearing being at a certain distance from an opposing system for held the substrate and avoided pivoting about an axis parallel to the longitudinal axis of the profile body or is limited in the direction of the counter system.
  • the articulation in or in the area of the center of gravity is moreover very generally very advantageous in every embodiment of the invention, since a very smooth self-adjustment that can be achieved under magnetic pressure can be achieved in this way.
  • a particularly expedient and advantageous embodiment of the invention consists in that the profile body is designed as a supporting body which causes the doctor blade to be pressed against the application surface and has a receptacle or recess which is arranged parallel to its longitudinal axis and in which the doctor blade is mounted in the form of a doctor blade.
  • the profile body can also be tilted about the longitudinal axis of the roller doctor, the receiving web area coming into contact with the roller doctor along different apex lines. The roller doctor blade is guided and aligned with the recess in the profile body.
  • doctor blade profiles can be formed on the profile body.
  • it can have a blade doctor blade in the form of a blade, a profile strip with a round or wedge-shaped working edge, but also a profile surface arranged in addition to a doctor blade.
  • the latter is formed in the doctor blade direction in front of a doctor blade in the area of the substance to be applied, so that it forms a wedge-shaped space for the latter relative to a stencil or a web of material, the size of which can be used to control a doctor blade and / or a dosage for the application.
  • the profile body is articulated freely pivotable about an axis parallel to its longitudinal axis.
  • the free self-adjustment and alignment of the. Achieved according to the invention, which can be brought about under magnetic force Profile body or the doctor blade is particularly well suited for a doctor blade device in which the profile body comprises a magnetic device arranged along its longitudinal axis, such as a permanent or electromagnet or a series arrangement of such elements.
  • a doctor blade device can work against a magnetizable substrate web system, for example in the form of a steel table or a steel roller, without the arrangement of a magnetic bar on the counter system being necessary.
  • Each squeegee device 1 comprises a possibly magnetizable profile body 2, which is provided together with a working or squeegee edge 54 of a squeegee 5 for acting on an application surface (substrate web) 6.
  • an application substance 61 is applied to the application surface 6, possibly by means of a pattern template such as a flat template or a round template 9.
  • the substrate web 6 is guided or held on a (counter) contact surface 8.
  • an electro-magnetic bar 7 Arranged on the contact surface 8 is an electro-magnetic bar 7 which extends over the application width and which magnetically detects the profile body 2 consisting of magnetizable material, including the optionally magnetizable doctor blade 5, for the purpose of contact pressure.
  • a pivot bearing 3 of doctor blades 1 is designed in the form of a ball joint 41 which, as can be seen in FIG. 3, in the middle of the length L (application width) of a magnetizable profile body 2 laterally on this with a ball joint shell is arranged.
  • the multiple pivot point of the ball joint 41 is thus arranged in a plane 21 which perpendicularly intersects the longitudinal axis 20 of the profile body in its position parallel to the application surface and in which the pivot point of the profile body 2 lies. With the ball bearing 41, the profile body 2 is freely pivotable about all spatial directions.
  • the profile body 2 can be freely tilted or pivoted about an axis 45 directed perpendicular to its longitudinal axis 20, this axis 45 assuming the positions of a family of axes oriented perpendicular to the longitudinal axis 20 of the body, by in turn rotating around a ball joint 20 parallel to the longitudinal axis 20 of the body.
  • axis 46 is freely pivotable or rotatable.
  • the ball joint 41 also provides for the profile body 2 to be freely pivotable about a ball joint axis 47 perpendicular to the axis 45, which in turn is thus freely pivotable or rotatable about the ball joint axis 46 and about the axis 45.
  • the profile body 2 or a doctor blade 5 arranged on it are self-adjusting when a magnetic pressure of the profile body 2 in the direction of the application surface 6 or the system 8 by means of magnetizing the magnetic bar arranged below the system 8 7 takes place.
  • Each squeegee 5 comes into contact with the application surface 6 without any impairment by the profile body mounting without tilting and curvature.
  • the ball joint 41 is carried by a holding part 32 of an application device.
  • the ball joint 41 is arranged to be movable in directions perpendicular to and along the counter system 8.
  • a guide bearing 31 is provided within the application device (FIG. 1), with which the holding part 32 can be moved or pivoted in at least some of the directions shown in FIG. 1. It can be seen that by changing the distance of the ball joint 41 from the system 8 by means of the guide bearing 31, a controlled pivoting of the profile body about the ball joint axis 46 can be carried out in a simple manner.
  • the profile body 2 is designed as a possibly magnetizable support body which causes a squeegee 5 to be pressed against the application surface 6 and has a recess 25 arranged parallel to its longitudinal axis 20, in which the squeegee 5 is mounted in the form of a magnetizable roller squeegee 51. This is in the recess 25 freely rotatable.
  • a profile surface 53 which borders on the recess 25, is formed on the profile body 2 and extends along and parallel to the longitudinal axis 20 of the body. It effects a metering of the substance 61 lying in front of the doctor blade 41. A specific pre-doctoring can also be achieved with it. Checking and control of the metering or the doctoring take place in a simple manner by changing the inclination of the profile surface 53 as a result of a change in the distance of the ball joint 41 from the system 8.
  • a blade doctor blade or blade 52 is arranged on the magnetizable profile body 2.
  • the inclination of this blade relative to the system 8 like the inclination of the profile surface 53 in the exemplary embodiment according to FIG. 2, can be varied by changing the distance of the ball joint 41.
  • FIG. 4 and 5 show a further embodiment of a pivot bearing 3 for a profile body 2.
  • the profile body 2 is in each case connected to an arm 22 in the region of its longitudinal ends.
  • Each arm is held with its free end in a link bearing in such a way that it can be moved in directions transverse and along the longitudinal axis 20 of the profile body.
  • an oscillating, swing-like suspension for the profile body 2 is achieved, which can be freely pivoted at least about an axis parallel to its longitudinal axis 20 and also about an axis 47 perpendicular to this, the axis 47 in turn being free about the longitudinal axis 20 is pivotable.
  • a doctor blade 5 with a wedge-shaped working edge 54 is formed on the profile body 2 in its longitudinal direction, which works against a roller 8 forming a system.
  • a magnetic bar 7 for magnetically pressing the magnetizable profile body 2 in the direction of the roller system 8 is arranged inside the roller 8.
  • FIG. 4 shows a top view according to a view BB in FIG. 5, the transverse mobility of the profile body 2 relative to the roller 8. It can be seen that the profile body 2 comes into contact with the roller 8 or against a substrate web vertically guided past the working edge 54 without tilting and self-adjusting.
  • a further doctor device 1 is shown in side view, longitudinal view (section A-B) and top view.
  • a pivot bearing 3 arranged on the profile body 2 is designed as a carriage-like or drawer-like bearing.
  • a pair of rollers or wheels 43 is arranged on the end faces of the profile body 2.
  • the rollers run on support surfaces or webs 44. These webs 44 are part of a bearing 40 and extend transversely to an application surface 6.
  • the directions of movement are shown in FIGS. 6 and 8.
  • the bearing 40 is pivotable about an axis 46 parallel to the longitudinal direction of the doctor device 1. 6, while it is not shown in FIGS.
  • the profile body 2 made of magnetizable material works with its doctor blade edge 54 against a magnetically detecting magnetic bar 7, which is arranged within a roller 8, which forms a contact or guide body for the application surface 6 and over in the longitudinal direction of the device 1 the application width extends.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Surgical Instruments (AREA)
  • Massaging Devices (AREA)
  • Confectionery (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Glass Compositions (AREA)
  • Polarising Elements (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Physical Vapour Deposition (AREA)
  • Materials For Medical Uses (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Paper (AREA)
  • Telephone Function (AREA)
  • Seal Device For Vehicle (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Screen Printers (AREA)
  • Power Steering Mechanism (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Pinball Game Machines (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

The doctor device has a profile member pivotally mounted to a retaining member that is carried on a mount. Vertical movement of the mount causes angular displacement of the profile member thereby changing the material applicaton area disposed adjacent and upstream of the doctor. The doctor is either a doctor blade or roll doctor. In the case of a roll doctor, a receptacle is formed in the profile member and the roll doctor is magnetically retained with the receptacle. During application of a material to an application surface with the roll doctor, the roll doctor is magnetically attracted to the application surface by a second magnetic device located beneath the application surface or work surface.

Description

Die Erfindung betrifft ein Rakelgerät zum Auftragen von Auftragsmaterial wie ggf. schäumbaren Substanzen unterschiedlicher Viskosität, Beschichtungsstoffen, Lacken, Klebern, Pasten od.dgl. auf eine Auftragsfläche (Substrat) mit mindestens einer in Länge des Rakelgeräts sich erstreckenden, durch Magnetkraft anpreßbaren Rakel, wobei das Rakelgerät einen mit seiner Längsachse sich in Richtung der Längsachse der Rakel erstreckenden Profilkörper sowie eine den Profilkörper anlenkende Schwenklagerung umfaßt und wobei die Rakel und/oder der Profilkörper wenigstens teilweise aus magnetisch wirkenden Teilen bestehen. Ein solches Rakelgerät, in dem die Rakel ggf. auch mit einer in sie integrierten Düse ausgebildet ist, wird in Maschinen für Flachschablonen-Druck, für Rundschablonen-Auftragungen und/oder Vorrichtungen für schablonenlose vollflächige Auftragungen verwendet, wobei die Auftragungsbreite bzw. die Rakelerstreckung insbesondere mehrere Meter betragen kann. Je nach Maschinentyp lassen sich bemusternde Auftragungen (Bedrucken) und/oder vollflächige Auftragungen (z.B. Imprägnieren, Beschichten, Färben, Lackieren) ausführen.The invention relates to a doctor blade device for applying application material such as foamable substances of different viscosities, coating materials, lacquers, adhesives, pastes or the like. on an application surface (substrate) with at least one doctor-magnet-extending doctor blade that extends in the length of the doctor device, the doctor device comprising a profile body with its longitudinal axis extending in the direction of the longitudinal axis of the doctor blade and a pivot bearing articulating the profile body, and wherein the doctor blade and / or the profile body at least partially consist of magnetically acting parts. Such a squeegee device, in which the squeegee is optionally also formed with a nozzle integrated in it, is used in machines for flat stencil printing, for round stencil applications and / or devices for stencilless full-area applications, the application width or the doctor extension in particular can be several meters. Depending on the machine type, sample applications (printing) and / or full-surface applications (e.g. impregnation, coating, dyeing, painting) can be carried out.

Einer jeweils verwendeten Rakel und/oder eines sie umfassenden Rakelgeräts kommen maßgebliche Bedeutung hinsichtlich der Handhabungs- und Einsatzmoglichkeiten einer Auftragungsvorrichtung sowie hinsichtlich des Substanz-Auftragungsergebnisses zu.A squeegee used in each case and / or a squeegee device comprising it are of significant importance with regard to the handling and application options of an application device and with regard to the substance application result.

Bei einer bekannten Rakelvorrichtung (CH-A-464 967) ist ein als Profilrundstab vorgesehener Rakelhalter mit einer Schwenklagerung versehen, die einen in einem Trägerkörper angeordneten und ein Zahnradgetriebe aufweisenden Verstellmechanismus zur wahlweisen, aber fest einzustellenden Drehung des Profilrundstabes um eine quer zur Arbeitsrichtung liegende Achse umfaßt. Der Trägerkörper ist über ein Farbrohr mittels einer Geradführung an einem Maschinengestell quer zur Arbeitsfläche beweglich gelagert. Beim Rakeln muß die Drehposition des Rakelhalters fest eingestellt bleiben. Damit ist ein in den Rakelhalter eingespanntes Rakelblatt über den Trägerkörper starr mit dem Farbrohr verbunden, wobei auch die in Längsrichtung des Rakelblattes sich erstreckenden Geräteteile starr miteinander verbunden sind. So stützt sich das Gesamtgewicht von Farbrohr, Trägerkörper, Schwenkgetriebe und Rakelhalter über das Rakelblatt ab. Die Belastung des Rakelblattes mit dem Eigengewicht des gesamten Rakelgeräts führt entlang der Auftragungsbreite zu Krümmungen und ggf. zu unkontollierten dauerhaften Verbiegungen und damit zu Beschädigungen, Querstellungen und/oder zu Fehlpositionen des Rakelblattes, so daß die Qualität des Auftragungsergebnisses beim Anlauf einer Auftragungsvorrichtung, aber auch während des Betriebs infolge plötzlicher Unregelmäßigkeiten entlang der Auftragungsfläche erheblich beeinträchtigt ist und sogar unbrauchbar sein kann. Dabei ist zu berücksichtigen, daß insbesondere bei großen Auftragungsbreiten schon minimale Rakelkrümmungen beträchtliche nachteilige Auswirkungen für das Druckergebnis zur Folge haben. So ist ggf. ein zeit- und kostenaufwendiges Nachjustieren des Rakelgerätes und/oder sogar der Austausch zerstörter Rakeln erforderlich.In a known squeegee device (CH-A-464 967), a squeegee holder provided as a profile round rod is provided with a pivot bearing which has an adjusting mechanism arranged in a carrier body and having a gear mechanism for the optional but firmly adjustable rotation of the profile round rod about an axis lying transversely to the working direction includes. The carrier body is movably supported transversely to the work surface via a paint tube by means of a straight guide on a machine frame. When squeegee, the rotary position of the squeegee holder must remain fixed. Thus, a doctor blade clamped in the doctor blade holder is rigidly connected to the ink tube via the carrier body, the device parts extending in the longitudinal direction of the doctor blade also being rigidly connected to one another. The total weight of the ink tube, carrier body, swivel gear and doctor blade holder is supported by the doctor blade. The loading of the doctor blade with the weight of the entire doctor device leads along the application width to curvatures and possibly to uncontrolled permanent bending and thus to damage, transverse positions and / or incorrect positions of the doctor blade, so that the quality of the application result when starting an application device, but also is significantly impaired during operation due to sudden irregularities along the application area and may even be unusable. It has to be taken into account that, especially with large application widths, even minimal doctor blade curvatures have considerable adverse effects on the printing result. For example, a time-consuming and costly readjustment of the doctor device and / or even the replacement of destroyed doctor blades is necessary.

Abs. Weiterhin ist es bekannt, an der Rückseite einer schwenkbeweglich gehaltenen Blatt-Streichrakel eine über die Auftragungsbreite fest mit der Rakel verbundene magnetisierbare Leiste vorzusehen, wobei die Rakel mittels dieser durch Magnetkraft eines unterhalb der Auftragungsfläche angeordneten Magnetbalkens in Richtung auf die Auftragungsfläche magnetisch anpreßbar ist (DE-OS 34 19 590).Abs. Furthermore, it is known on the back of a swiveling blade squeegee to provide a magnetizable bar firmly connected to the squeegee over the application width, the squeegee being able to be pressed magnetically in the direction of the application surface by means of the magnetic force of a magnetic bar arranged below the application surface (DE-OS 34 19 590).

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein mindestens eine magnetisch anpreßbare Rakel umfassendes Rakelgerät mit einer Schwenklagerung zu schaffen, die eine verkantungsfreie, verbiegungsfreie sowie druckgenaue Selbsteinstellung und -ausrichtung der Rakel an eine Auftragsfläche gewährleistet.In contrast, the invention is based on the object to provide a squeegee device comprising at least one magnetically compressible squeegee with a pivot bearing which ensures canting-free, bending-free and pressure-accurate self-adjustment and alignment of the squeegee to an application surface.

Diese Aufgabe wird in Verbindung mit den Merkmalen des eingangs genannten Rakelgerätes dadurch gelöst, daß die Schwenklagerung als an dem die Rakel bildenden oder führenden Profilkörper derart angeordnet und ausgebildet ist, daß der Profilkörper gegenüber einer zur Auftragsfläche parallelen Lage um mindestens eine zu seiner Längsachse senkrechte Schwenkachse frei kippbar ist. Der erfindungsgemäße Rakel-Profilkörper mit freier Schwenklagerung um mindestens eine zu der Profilkörper-Längsachse senkrechte Achse gewährleistet eine verspannungsfreie und verkantungsfreie sich selbst einstellende Ausrichtung der Rakel über die Länge der Vorrichtung (Auftragungsbreite). Während des Einschaltens der magnetischen Anpressung und/oder im Betrieb der Vorrichtung wird die Rakel frei, d.h. ohne herkömmlich lagerbedingte Zwangskräfte positioniert und gehalten. Dabei paßt sie sich während des Auftragungsbetriebs an ggf. auftretende Neigungsunregelmäßigkeiten in der Lage der Auftragungsfläche (Substratbahn) an. So ist im Zusammenhang mit der magnetischen Anpressung eine Optimierung sowohl für den Beginn des Auftragungsbetriebs, als auch während der Auftragung erreicht. Nachteilige Verbiegungen und/oder Nachjustierungen der Lager, die häufig in Auftragungsvorrichtungen mit herkömmlichen magnetisch anpreßbaren Rakelgeräten durchgeführt werden müssen, entfallen. Die Lebensdauer von Profilkörper und/oder Rakel ist erheblich erhöht, da deren Beschädigung durch lagerbedingte Einspannungen und/oder Verspannungen beseitigt ist. Auch entfallen die ggf. bei herkömmlichen Rakelgeräten erforderlichen Nachbearbeitungen oder Nachrichtungen verspannter Rakeln und/ oder Profilkörper.This object is achieved in connection with the features of the doctor device mentioned at the outset in that the pivot bearing is arranged and designed as on the profile body forming or guiding the doctor blade in such a way that the profile body has at least one pivot axis perpendicular to its longitudinal axis relative to a position parallel to the application surface is freely tiltable. The doctor blade profile body according to the invention with free pivot bearing about at least one axis perpendicular to the longitudinal axis of the profile body ensures a tension-free and tilt-free self-adjusting alignment of the doctor blade over the length of the device (application width). When the magnetic pressure is switched on and / or during the operation of the device, the doctor blade is positioned and held freely, ie without conventional bearing-related constraining forces. It adapts to any inclination irregularities that may occur in the position of the application surface (substrate web) during application operation. In connection with the magnetic pressure, an optimization is achieved both for the start of the application operation and during the application. Adverse bending and / or readjustments of the bearings, which often have to be carried out in application devices with conventional magnetically pressed doctor devices, are eliminated. The lifespan of the profile body and / or doctor blade is considerably increased, since their damage is eliminated by clampings and / or tension caused by the bearing. The post-processing or re-tensioning of doctor blades, which may be necessary with conventional doctor blades, is also eliminated. or profile body.

Zum Variieren eines Substanzraumes, eines Substanzstaudruckes und/oder des Anpreßdruckes ist eine Veränderbarkeit des Neigungswinkels einer Rakel- oder Streichkante und/oder des Profilkörpers gegenüber einer Auftragsfläche von großer Bedeutung. Eine sehr einfache und gezielte Beeinflussung dieser Parameter, insbesondere auch während des kontinuierlichen Auftragungsbetriebs, wird in Weiterbildung der Erfindung dadurch erreicht, daß die Schwenklagerung ein Mehrfach-Schwenklager umfaßt, mit dem der Profilkörper auch um mindestens eine zu seiner Längsachse parallele Achse frei schwenkbar ist. In besonderer Gestaltung umfaßt die Schwenklagerung ein Mehrfach-Schwenklager, mit dem der Profilkörper um sämtliche Raumrichtungen frei schwenkbar ist. Auf diese Weist ist eine freie Einstellung und Ausrichtung der Rakel entlang sämtlicher Arbeitslagen sichergestellt.In order to vary a substance space, a substance back pressure and / or the contact pressure, it is very important to be able to change the angle of inclination of a doctor blade or coating edge and / or the profile body relative to an application surface. A very simple and targeted influencing of these parameters, in particular also during continuous application operation, is achieved in a further development of the invention in that the pivot bearing comprises a multiple pivot bearing with which the profile body can also be freely pivoted about at least one axis parallel to its longitudinal axis. In a special design, the pivot bearing comprises a multiple pivot bearing with which the profile body can be pivoted freely in all spatial directions. In this way, free adjustment and alignment of the squeegee is ensured along all working positions.

Gemäß einer Ausführungsart der Erfindung ist die Schwenklagerung in Form eines Kugelgelenks oder eines ineinander eingehängte Ösen aufweisenden Ösengelenks ausgebildet. Mit einem derartigen Lager ist die freie Schwenkanlenkung des die Rakel bildenden oder führenden Profilkörpers konstruktiv besonders einfach verwirklicht.According to one embodiment of the invention, the pivot bearing is designed in the form of a ball-and-socket joint or an eyelet joint that has hooked-in eyelets. With such a bearing, the free swivel articulation of the profile body forming or guiding the squeegee is particularly simple in terms of construction.

Gemäß einer anderen Ausführungsform der Erfindung kann es aber auch zweckmäßig sein, daß die Schwenklagerung im Bereich der längsseitigen Enden des Profilkörpers angeordnete Kulissenlager umfaßt, wobei der Profilkörper mit Armen gehalten ist, die jeweils in dem seitlichen Kulissenlager in Richtungen quer und längs zur Längsachse des Profilkörpers beweglich gehalten sind. Bei dieser Ausführungsform sind die Arme in dem jeweiligen Kulissenlager vorteilhaft um eine zur Längsachse des Profilkörpers parallele Achse schwenkbeweglich gehalten, um die wirksame Rakelfläche und/oder die magnetisch wirksame Masse von Rakel bzw. Profilkörper durch Veränderung der Neigungslage dieser Elemente zur Auftragsfläche frei einstellen zu können. Eine besondere Ausbildung der Kulissen-Schwenklagerung besteht weiter darin, daß jeder Arm um seine Erstreckungsachse schwenkbeweglich gehalten ist.According to another embodiment of the invention, however, it can also be expedient for the pivot bearing to comprise link bearings arranged in the region of the longitudinal ends of the profile body, the profile body being held with arms, each in the side link bearing in directions transverse and longitudinally to the longitudinal axis of the profile body are kept mobile. In this embodiment, the arms in the respective link bearing are advantageously held so as to be pivotable about an axis parallel to the longitudinal axis of the profile body to be able to freely adjust the effective squeegee area and / or the magnetically effective mass of the squeegee or profile body by changing the inclination of these elements to the application area. A special design of the link pivot bearing further consists in the fact that each arm is held so as to be pivotable about its axis of extension.

Zur Steuerung des Neigungswinkels der Rakel bzw. des Profilkörpers gegenüber einer ortsfesten Anlage für die Auftragsfläche ist vorgesehen, daß die Schwenklagerung an einer Führungslagerung angeordnet ist, mit der die Schwenklagerung in mindestens einer Richtung senkrecht zu der Längsachse des Profilkörpers bewegbar ist. Aufgrund der mehrere Freiheitsgrade umfassenden Schwenklagerung werden ggf. auftretende Lagerunregelmäßigkeiten der Führungslagerung selbsttätig ausgeglichen. So kann diese relativ einfach ausgeführt werden, da an ihre Genauigkeit keine allzu hohen Anforderungen gestellt werden müssen.To control the angle of inclination of the squeegee or the profile body relative to a stationary system for the application surface, it is provided that the pivot bearing is arranged on a guide bearing with which the pivot bearing can be moved in at least one direction perpendicular to the longitudinal axis of the profile body. Due to the pivot bearing, which comprises several degrees of freedom, any irregularities in the bearing arrangement that may occur are automatically compensated for. This can be carried out relatively easily, since the accuracy does not have to be too high.

Mit der Erfindung ist es auf einfache Weise möglich, den Profilkörper bzw. die Rakel jeweils über deren Längserstreckung in einem festen (geringfügigen) äquidistanten Abstand zu einer Anlage für die Auftragsfläche selbsttätig zu positionieren und zu halten. Diese gegenüber einer Warenbahn (Auftragsfläche) kontaktlose Positionierung ist für einige Auftragungsarten von großer Bedeutung. Zu diesem Zweck sieht die Erfindung vor, daß der Schwenkpunkt bzw. die Schwenkpunkte der Schwenklagerung in einer Ebene angeordnet sind, die die Längsachse des Profilkörpers senkrecht schneidet und in der der Schwenkpunkt des Profilkörpers liegt, wobei die Schwenklagerung in einem bestimmten Abstand zu einer Gegenanlage für das Substrat gehalten und Schwenkbeweglichkeit um eine zu der Profilkörper-Längsachse parallele Achse vermieden oder in Richtung auf die Gegenanlage begrenzt ist. Die Anlenkung in oder im Bereich der Schwerpunktebene ist darüber hinaus ganz allgemein bei jeder Ausführungsform der Erfindung sehr vorteilhaft, da so eine sehr leichtgängige, unter Magnet-Anpreßkraft zu bewerkstelligende Selbsteinstellung erreichbar ist.With the invention, it is possible in a simple manner to automatically position and hold the profile body or the doctor blade over its longitudinal extent at a fixed (slight) equidistant distance from a system for the application area. This contactless positioning in relation to a web (order area) is of great importance for some types of order. For this purpose, the invention provides that the pivot point or the pivot points of the pivot bearing are arranged in a plane which perpendicularly intersects the longitudinal axis of the profile body and in which the pivot point of the profile body lies, the pivot bearing being at a certain distance from an opposing system for held the substrate and avoided pivoting about an axis parallel to the longitudinal axis of the profile body or is limited in the direction of the counter system. The articulation in or in the area of the center of gravity is moreover very generally very advantageous in every embodiment of the invention, since a very smooth self-adjustment that can be achieved under magnetic pressure can be achieved in this way.

Eine besonders zweckmäßige und vorteilhafte Ausgestaltung der Erfindung besteht, darin, daß der Profilkörper als ein die Anpressung der Rakel gegen die Auftragsfläche bewirkender Tragkörper mit einer parallel zu seiner Längsachse angeordneten Aufnahme oder Ausnehmung ausgebildet ist, in der die Rakel in Form einer Rollrakel gelagert ist. Der Profilkörper ist auch um die Längsachse der Rollrakel kippbar, wobei der Aufnahme-Stegbereich entlang verschiedener Scheitellinien der Rollrakel an dieser zu Anlage kommt. Die Rollrakel ist mit der Ausnehmung in dem Profilkörper geführt und ausgerichtet.A particularly expedient and advantageous embodiment of the invention consists in that the profile body is designed as a supporting body which causes the doctor blade to be pressed against the application surface and has a receptacle or recess which is arranged parallel to its longitudinal axis and in which the doctor blade is mounted in the form of a doctor blade. The profile body can also be tilted about the longitudinal axis of the roller doctor, the receiving web area coming into contact with the roller doctor along different apex lines. The roller doctor blade is guided and aligned with the recess in the profile body.

An dem Profilkörper können die verschiedensten Rakelprofile ausgebildet sein. So kann er insbesondere eine Blatt-Streichrakel in Form einer Klinge, eine Profilleiste mit einer rund- oder keilförmigen Arbeitskante, aber auch eine zusätzlich zu einer Rakel angeordnete Profilfläche aufweisen. Letztere wird in Rakelrichtung vor einer Rakel im Bereich der aufzutragenden Substanz ausgebildet, so daß sie für diese gegenüber einer Schablone oder einer Warenbahn einen keilförmigen Raum bildet, mit dessen Größe eine Vorrakelung und/oder eine Dosierung für die Auftragung steuerbar ist. Für eine solche Ausführung wird der Profilkörper um eine zu seiner Längsachse parallele Achse frei schwenkbar angelenkt.A wide variety of doctor blade profiles can be formed on the profile body. In particular, it can have a blade doctor blade in the form of a blade, a profile strip with a round or wedge-shaped working edge, but also a profile surface arranged in addition to a doctor blade. The latter is formed in the doctor blade direction in front of a doctor blade in the area of the substance to be applied, so that it forms a wedge-shaped space for the latter relative to a stencil or a web of material, the size of which can be used to control a doctor blade and / or a dosage for the application. For such an embodiment, the profile body is articulated freely pivotable about an axis parallel to its longitudinal axis.

Die erfindungsgemäß erreichte, unter Magnetkraft herbeiführbare freie Selbsteinstellung und -ausrichtung des Profilkörpers bzw. der Rakel ist besonders gut für ein Rakelgerät geeignet, in dem der Profilkörper eine entlang seiner Längsachse angeordnete Magnetvorrichtung wie einen Permanent- oder Elektromagneten oder eine Reihenanordnung solcher Elemente umfaßt. Ein derartiges Rakelgerät kann gegen eine magnetisierbare Substratbahn-Anlage z.B. in Form eines Stahltisches oder einer Stahlwalze arbeiten, ohne daß die Anordnung eines Magnetbalkens an der Gegenanlage erforderlich ist.The free self-adjustment and alignment of the. Achieved according to the invention, which can be brought about under magnetic force Profile body or the doctor blade is particularly well suited for a doctor blade device in which the profile body comprises a magnetic device arranged along its longitudinal axis, such as a permanent or electromagnet or a series arrangement of such elements. Such a doctor blade device can work against a magnetizable substrate web system, for example in the form of a steel table or a steel roller, without the arrangement of a magnetic bar on the counter system being necessary.

Weitere Zweckmäßigkeiten, Ausgestaltungen und Ausführungsbeispiele der Erfindung gehen aus den Unteransprüchen sowie der im folgenden beschriebenen schematischen Zeichnung hervor. Es zeigen

Fig. 1 und 2
im Querschnitt jeweils ein erfindungsgemäßes Rakelgerät,
Fig. 3
die Längsansicht des erfindungsgemäßen Rakelgerätes der Fig. 1 in Richtung A ohne Halteteil,
Fig. 4
eine Draufsicht auf ein erfindungsgemäßes Rakelgerät mit einem entlang einer Walze sich erstreckenden Rakel-Profilkörper und
Fig. 5
ein erfindungsgemäßes Rakelgerät mit einer Kulissen-Schwenklagerung eines entlang einer Walze sich erstreckenden Rakel-Profilkörpers und
Fig. 6 bis 8
ein weiteres erfindungsgemäßes Rakelgerät.
Further expediencies, refinements and exemplary embodiments of the invention emerge from the subclaims and the schematic drawing described below. Show it
1 and 2
in cross section one doctor blade device according to the invention,
Fig. 3
1 in the direction A without the holding part,
Fig. 4
a plan view of a doctor device according to the invention with a doctor body and extending along a roller
Fig. 5
a doctor blade device according to the invention with a pivoting pivot bearing of a doctor blade body extending along a roller and
6 to 8
another doctor device according to the invention.

Die in den Figuren dargestellten Rakelgeräte 1 sind Teile einer nicht dargestellten Auftragungsvorrichtung. Jedes Rakelgerät 1 umfaßt einen ggf. magnetisierbaren Profilkörper 2, der zusammen mit einer Arbeits- oder Rakelkante 54 einer Rakel 5 zur Einwirkung auf eine Auftragsfläche (Substratbahn) 6 vorgesehen ist. Bei magnetischer Anpressung der Arbeits-/Rakelkante 54 und bei deren Relativbewegung entlang der Auftragsfläche 6 wird eine Auftragssubstanz 61 ggf. durch eine Bemusterungsschablone wie eine Flachschablone oder eine Rundschablone 9 auf die Auftragsfläche 6 aufgetragen. Die Substratbahn 6 ist an einer (Gegen-) Anlagefläche 8 geführt oder gehalten. An der Anlagefläche 8 ist ein über die Auftragungsbreite sich erstreckender Elektro-Magnetbalken 7 angeordnet, der den aus magnetisierbarem Material bestehenden Profilkörper 2 einschließlich der ggf. magnetisierbaren Rakel 5 zum Zwecke der Anpressung magnetisch erfaßt.The doctoring devices 1 shown in the figures are parts an application device, not shown. Each squeegee device 1 comprises a possibly magnetizable profile body 2, which is provided together with a working or squeegee edge 54 of a squeegee 5 for acting on an application surface (substrate web) 6. When the working / doctor edge 54 is pressed magnetically and when it moves relative to the application surface 6, an application substance 61 is applied to the application surface 6, possibly by means of a pattern template such as a flat template or a round template 9. The substrate web 6 is guided or held on a (counter) contact surface 8. Arranged on the contact surface 8 is an electro-magnetic bar 7 which extends over the application width and which magnetically detects the profile body 2 consisting of magnetizable material, including the optionally magnetizable doctor blade 5, for the purpose of contact pressure.

Gemäß Fig. 1 und 2 ist eine Schwenklagerung 3 erfindungsgemäßer Rakelgeräte 1 in Form eines Kugelgelenks 41 ausgebildet, das, wie aus Fig. 3 hervorgeht, in der Mitte der Länge L (Auftragungsbreite) eines magnetisierbaren Profilkörpers 2 seitlich an diesem mit einer Kugel-Gelenkschale angeordnet ist. Damit ist der Mehrfach-Schwenkpunkt des Kugelgelenks 41 in einer Ebene 21 angeordnet, die die Längsachse 20 des Profilkörpers in seiner zur Auftragsfläche parallelen Lage senkrecht schneidet und in der der Schwenkpunkt des Profilkörpers 2 liegt. Mit der Kugellagerung 41 ist der Profilkörper 2 um sämtlicher Raumrichtungen frei schwenkbar gelagert.1 and 2, a pivot bearing 3 of doctor blades 1 according to the invention is designed in the form of a ball joint 41 which, as can be seen in FIG. 3, in the middle of the length L (application width) of a magnetizable profile body 2 laterally on this with a ball joint shell is arranged. The multiple pivot point of the ball joint 41 is thus arranged in a plane 21 which perpendicularly intersects the longitudinal axis 20 of the profile body in its position parallel to the application surface and in which the pivot point of the profile body 2 lies. With the ball bearing 41, the profile body 2 is freely pivotable about all spatial directions.

Insbesondere ist der Profilkörper 2 um eine zu seiner Längsachse 20 senkrecht gerichtete Achse 45 frei kippbar oder schwenkbar, wobei diese Achse 45 die Positionen einer Schar von zu der Körperlängsachse 20 senkrecht gerichteten Achsen einnimmt, indem sie ihrerseits um eine zu der Körperlängsachse 20 parallele Kugelgelenk-Achse 46 frei schwenkbar oder drehbar ist. Insbesondere ist mittels des Kugelgelenks 41 auch eine freie Schwenkbarkeit des Profilkörpers 2 um eine zu der Achse 45 senkrechte Kugelgelenk-Achse 47 vorgesehen, die damit ihrerseits um die Kugelgelenk-Achse 46 sowie um die Achse 45 frei schwenkbar oder drehbar ist. Damit ist erreicht, daß der Profilkörper 2 bzw. eine an ihm angeordnete Rakel 5 sich selbst einstellend gelagert sind, wenn eine magnetische Anpressung des Profilkörpers 2 in Richtung auf die Auftragsfläche 6 bzw. die Anlage 8 mittels einer Magnetisierung des unterhalb der Anlage 8 angeordneten Magnetbalkens 7 erfolgt. Jede Rakel 5 kommt ohne jegliche Beeinträchtigung durch die Profilkörperlagerung verkippungs- und verkrümmungsfrei zur Anlage gegen die Auftragsfläche 6.In particular, the profile body 2 can be freely tilted or pivoted about an axis 45 directed perpendicular to its longitudinal axis 20, this axis 45 assuming the positions of a family of axes oriented perpendicular to the longitudinal axis 20 of the body, by in turn rotating around a ball joint 20 parallel to the longitudinal axis 20 of the body. axis 46 is freely pivotable or rotatable. In particular, the ball joint 41 also provides for the profile body 2 to be freely pivotable about a ball joint axis 47 perpendicular to the axis 45, which in turn is thus freely pivotable or rotatable about the ball joint axis 46 and about the axis 45. It is thereby achieved that the profile body 2 or a doctor blade 5 arranged on it are self-adjusting when a magnetic pressure of the profile body 2 in the direction of the application surface 6 or the system 8 by means of magnetizing the magnetic bar arranged below the system 8 7 takes place. Each squeegee 5 comes into contact with the application surface 6 without any impairment by the profile body mounting without tilting and curvature.

Wie in Fig. 1 und 2 gezeigt, ist das Kugelgelenk 41 von einem Halteteil 32 einer Auftragungsvorrichtung getragen. Mit diesem ist das Kugelgelenk 41 in Richtungen senkrecht zu und längs der Gegenanlage 8 bewegbar angeordnet. Insbesondere ist innerhalb der Auftragungsvorrichtung eine Führungslagerung 31 vorgesehen (Fig. 1), mit der das Halteteil 32 in wenigstens einige der in Fig. 1 eingetragene Richtungen bewegbar oder schwenkbar ist. Man erkennt, daß durch eine Abstandsveränderung des Kugelgelenks 41 gegenüber der Anlage 8 mittels des Führungslagers 31 auf einfache Weise ein gesteuertes Schwenken des Profilkörpers um die Kugelgelenk-Achse 46 ausführbar ist.As shown in FIGS. 1 and 2, the ball joint 41 is carried by a holding part 32 of an application device. With this, the ball joint 41 is arranged to be movable in directions perpendicular to and along the counter system 8. In particular, a guide bearing 31 is provided within the application device (FIG. 1), with which the holding part 32 can be moved or pivoted in at least some of the directions shown in FIG. 1. It can be seen that by changing the distance of the ball joint 41 from the system 8 by means of the guide bearing 31, a controlled pivoting of the profile body about the ball joint axis 46 can be carried out in a simple manner.

In Fig. 1 ist der Profilkörper 2 als ein die Anpressung einer Rakel 5 gegen die Auftragsfläche 6 bewirkender ggf. magnetisierbarer Tragkörper mit einer parallel zu seiner Längsachse 20 angeordneten Ausnehmung 25 ausgebildet, in der die Rakel 5 in Form einer magnetisierbaren Rollrakel 51 gelagert ist. Diese ist in der Ausnehmung 25 frei drehbar.In Fig. 1, the profile body 2 is designed as a possibly magnetizable support body which causes a squeegee 5 to be pressed against the application surface 6 and has a recess 25 arranged parallel to its longitudinal axis 20, in which the squeegee 5 is mounted in the form of a magnetizable roller squeegee 51. This is in the recess 25 freely rotatable.

An dem Profilkörper 2 ist eine an die Ausnehmung 25 grenzende Profilfläche 53 ausgebildet, die sich entlang der Körperlängsachse 20 und parallel zu dieser erstreckt. Sie bewirkt eine Dosierung der vor der Rollrakel 41 liegenden Substanz 61. Auch kann mit ihr eine gezielte Vorrakelung erzielt sein. Kontrolle und Steuerung der Dosierung bzw. der Vorrakelung erfolgen auf einfache Weise durch Änderung der Neigungslage der Profilfläche 53 infolge einer Abstandsänderung des Kugelgelenks 41 gegenüber der Anlage 8.A profile surface 53, which borders on the recess 25, is formed on the profile body 2 and extends along and parallel to the longitudinal axis 20 of the body. It effects a metering of the substance 61 lying in front of the doctor blade 41. A specific pre-doctoring can also be achieved with it. Checking and control of the metering or the doctoring take place in a simple manner by changing the inclination of the profile surface 53 as a result of a change in the distance of the ball joint 41 from the system 8.

In Fig. 2 ist an dem magnetisierbaren Profilkörper 2 eine Blatt-Streichrakel oder Klinge 52 angeordnet. Die Neigung dieser Klinge gegenüber der Anlage 8 ist ebenso wie die Neigung der Profilfläche 53 in dem Ausführungsbeispiel gemäß Fig. 2 durch Abstandsänderung des Kugelgelenks 41 variierbar.In FIG. 2, a blade doctor blade or blade 52 is arranged on the magnetizable profile body 2. The inclination of this blade relative to the system 8, like the inclination of the profile surface 53 in the exemplary embodiment according to FIG. 2, can be varied by changing the distance of the ball joint 41.

Fig. 4 und 5 zeigen eine weitere Ausführungsform eines Schwenklagers 3 für einen Profilkörper 2. Wie in Fig. 5 dargestellt, ist der Profilkörper 2 im Bereich seiner längsseitigen Enden jeweils mit einem Arm 22 verbunden. Jeder Arm ist mit seinem freien Ende in einem Kulissenlager derart gehalten, daß er in Richtungen quer und längs zur Längsachse 20 des Profilkörpers bewegbar ist. Au diese Weise ist eine pendelnde, Schaukel-ähnliche Aufhängung für den Profilkörper 2 erreicht, der wenigstens um eine zu seiner Längsachse 20 parallele Achse und zudem um eine zu dieser senkrechten Achse 47 frei schwenkbar ist, wobei die Achse 47 ihrerseits um die Längsachse 20 frei schwenkbar ist.4 and 5 show a further embodiment of a pivot bearing 3 for a profile body 2. As shown in FIG. 5, the profile body 2 is in each case connected to an arm 22 in the region of its longitudinal ends. Each arm is held with its free end in a link bearing in such a way that it can be moved in directions transverse and along the longitudinal axis 20 of the profile body. In this way, an oscillating, swing-like suspension for the profile body 2 is achieved, which can be freely pivoted at least about an axis parallel to its longitudinal axis 20 and also about an axis 47 perpendicular to this, the axis 47 in turn being free about the longitudinal axis 20 is pivotable.

An dem Profilkörper 2 ist in seiner Längsrichtung eine Rakel 5 mit einer keilförmigen Arbeitskante 54 ausgebildet, die gegen eine eine Anlage 8 bildende Walze arbeitet. Innerhalb der Walze 8 ist ein Magnetbalken 7 zur magnetischen Anpressung des magnetisierbaren Profilkörpers 2 in Richtung auf die Walzenanlage 8 angeordnet. In Fig. 4 ist in Draufsicht gemäß einer Ansicht B-B in Fig. 5 die Querbeweglichkeit des Profilkörpers 2 gegenüber der Walze 8 dargestellt. Man erkennt, daß der Profilkörper 2 gegen die Walze 8 bzw. an eine vertikal an der Arbeitskante 54 vorbeigefühte Substratbahn verkippungsfrei und sich selbst einstellend zur Anlage kommt.A doctor blade 5 with a wedge-shaped working edge 54 is formed on the profile body 2 in its longitudinal direction, which works against a roller 8 forming a system. A magnetic bar 7 for magnetically pressing the magnetizable profile body 2 in the direction of the roller system 8 is arranged inside the roller 8. FIG. 4 shows a top view according to a view BB in FIG. 5, the transverse mobility of the profile body 2 relative to the roller 8. It can be seen that the profile body 2 comes into contact with the roller 8 or against a substrate web vertically guided past the working edge 54 without tilting and self-adjusting.

In Fig. 6 bis 8 ist ein weiteres erfindungsgemäßes Rakelgerät 1 in Seitenansicht, Längsansicht (Schnitt A-B) und Draufsicht dargestellt. Eine an dem Profilkörper 2 angeordnete Schwenklagerung 3 ist als Wagen- oder Schubladen-ähnliches Lager ausgebildet. An den Stirnseiten des Profilkörpers 2 ist jeweils ein Rollen- oder Radpaar 43 angeordnet. Die Rollen laufen an Auflageflächen oder -bahnen 44. Diese Bahnen 44 sind Bestandteil einer Lagerung 40 und erstrecken sich quer zu einer Auftragsfläche 6. Auf diese Weise ist der Profilkörper 2 mit einer Rakelkante 54 in Quer- und Längsrichtung zu der Auftragsfläche 6 verfahrbar oder ortsveränderbar. Die Bewegungsrichtungen sind in Fig. 6 und 8 eingetragen. Die Lagerung 40 ist um eine zu der Längsrichtung des Rakelgeräts 1 parallele Achse 46 schwenkbeweglich. Diese Schwenkbeweglichkeit geht aus Fig. 6 hervor, während sie in den Fig. 7 und 8 nicht näher dargestellt ist. Damit ist eine freie Einstellung der Neigungslage des Profilkörpers 2 gegenüber der Auftragsfläche 6 erreicht. - Der aus magnetisierbarem Material bestehende Profilkörper 2 arbeitet mit seiner Streich-Rakelkante 54 gegen einen ihn magnetisch erfassenden Magnetbalken 7, der innerhalb einer Walze 8 angeordnet ist, die einen Anlage- oder Führungskörper für die Auftragsfläche 6 bildet und sich in Längsrichtung des Gerätes 1 über die Auftragungsbreite erstreckt.6 to 8 a further doctor device 1 according to the invention is shown in side view, longitudinal view (section A-B) and top view. A pivot bearing 3 arranged on the profile body 2 is designed as a carriage-like or drawer-like bearing. A pair of rollers or wheels 43 is arranged on the end faces of the profile body 2. The rollers run on support surfaces or webs 44. These webs 44 are part of a bearing 40 and extend transversely to an application surface 6. In this way, the profile body 2 with a doctor edge 54 can be moved in the transverse and longitudinal direction to the application surface 6 or can be changed in position . The directions of movement are shown in FIGS. 6 and 8. The bearing 40 is pivotable about an axis 46 parallel to the longitudinal direction of the doctor device 1. 6, while it is not shown in FIGS. 7 and 8. A free adjustment of the inclination of the profile body 2 relative to the application surface 6 is thus achieved. - The profile body 2 made of magnetizable material works with its doctor blade edge 54 against a magnetically detecting magnetic bar 7, which is arranged within a roller 8, which forms a contact or guide body for the application surface 6 and over in the longitudinal direction of the device 1 the application width extends.

Claims (13)

  1. Squeegee device (1) for applying material, such as optionally foamable substances of different viscosity, coating substances, varnishes, adhesives, pastes, etc. to an application surface (6) (substrate) with at least one squeegee (5, 51) extending in the longitudinal direction of the squeegee device and pressable by magnetic force, the squeegee device (1) comprising a profile member (2) extending with its longitudinal axis (20) in the direction of the longitudinal axis of the squeegee (5, 51), as well as a pivot bearing articulating the profile member (2), and the squeegee (5, 51) and/or the profile member consisting at least partly of magnetically acting parts, characterized in that the pivot bearing (3) is constructed and arranged on the profile member (2), which forms or guides the squeegee (5, 51) in such a manner that the profile member (2) is freely tiltable with respect to a position parallel to the application surface (6) about at least one pivot axis (45) perpendicular to its longitudinal axis (20).
  2. Squeegee device according to claim 1, characterized in that the pivot bearing (3) comprises a multiple pivot bearing (4) with which the profile member (2) is freely pivotable about at least one axis (46) parallel to its longitudinal axis (20).
  3. Squeegee device according to claims 1 or 2, characterized in that the pivot bearing (3) comprises a multiple pivot bearing (4) with which the profile member (2) is freely pivotable about all directions in space.
  4. Squeegee device according to one of the claims 1 to 3, characterized in that the pivot bearing (3) is constructed in the form of a spherical joint (41) or a ring joint having rings suspended into one another.
  5. Squeegee device according to one of the claims 1 to 3, characterized in that the pivot bearing (3) comprises link bearings (42) arranged in the vicinity of the longitudinal side ends of the profile member (2), the profile member (2) being held with arms (22), which are respectively movably held in the lateral link bearing (43) in directions transverse to and/or along the longitudinal axis (20) of the profile member.
  6. Squeegee device according to claim 5, characterized in that the arms (22) are pivotably held in the respective link bearing (43) about an axis (46) parallel to the longitudinal axis (20) of the profile member (2).
  7. Squeegee device according to claims 5 or 6, characterized in that each arm (22) is pivotably held about its extension axis.
  8. Squeegee device according to one of the claims 1 to 3, characterized in that the pivot bearing (3) comprises ball, roller, needle and/or slide bearings (43) arranged on the profile member (2) as well as a guide path or bearing surface (44) extending transversely with respect to the application surface (6), the profile member, in a position parallel to the guide path or bearing surface, being transversely and laterally positionally variable with respect to the bearing surface.
  9. Squeegee device according to one of the claims 1 to 8, characterized in that the pivot bearing (3) is arranged on a guide bearing (31) with which the pivot bearing (3) is movable in at least one direction perpendicular to the longitudinal axis (20) of the profile member (2).
  10. Squeegee device according to one of the claims 1 to 9, characterized in that the pivot point resp. the pivot points of the pivot bearing (3) are arranged in or in the vicinity of a plane (21), which perpendicularly intersects the longitudinal axis (20) of the profile member (2) in its position (49) parallel to the application surface (6) and in which is located the centre of gravity (23) of the profile member.
  11. Squeegee device according to one of the claims 1 to 10, characterized in that the profile member (2) is constructed as a support body, which effects pressing of the squeegee (5) against the application surface (6) and which has a receptacle or recess (25) parallel to its longitudinal axis (20), in which is mounted the squeegee (5) in the form of a roller doctor (51).
  12. Squeegee device according to one of the claims 1 to 11, characterized in that on the profile member (2) is arranged or formed at least one squeegee (5), such as a profile strip, a blade (52) and/or a profiled surface (53).
  13. Squeegee device according to one of the claims 1 to 12, characterized in that the profile member (2) comprises a magnet device, such as a permanent magnet or an electromagnet or a row of such components, arranged along its longitudinal axis (20).
EP88107936A 1987-10-10 1988-05-18 Squeegee device Expired - Lifetime EP0311743B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107936T ATE69981T1 (en) 1987-10-10 1988-05-18 SQUEEGEE.

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE8713789U DE8713789U1 (en) 1987-10-10 1987-10-10 Squeegee device
DE19873734747 DE3734747A1 (en) 1987-10-10 1987-10-10 Doctor device
EP87730126 1987-10-10
DE8713788U 1987-10-10
EP87730128A EP0311730B1 (en) 1987-10-10 1987-10-10 Squeegee
DE8713789U 1987-10-10
DE3734747 1987-10-10
DE8713788U DE8713788U1 (en) 1987-10-10 1987-10-10 Squeegee device
EP87730126A EP0311728B1 (en) 1987-10-10 1987-10-10 Doctoring device
EP87730128 1987-10-10

Publications (2)

Publication Number Publication Date
EP0311743A1 EP0311743A1 (en) 1989-04-19
EP0311743B1 true EP0311743B1 (en) 1991-12-04

Family

ID=27511111

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EP88107937A Expired - Lifetime EP0311744B1 (en) 1987-10-10 1988-05-18 Coating device
EP88107938A Expired - Lifetime EP0311745B1 (en) 1987-10-10 1988-05-18 Coating device
EP88107936A Expired - Lifetime EP0311743B1 (en) 1987-10-10 1988-05-18 Squeegee device

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EP88107937A Expired - Lifetime EP0311744B1 (en) 1987-10-10 1988-05-18 Coating device
EP88107938A Expired - Lifetime EP0311745B1 (en) 1987-10-10 1988-05-18 Coating device

Country Status (10)

Country Link
US (6) US4993352A (en)
EP (3) EP0311744B1 (en)
JP (4) JPH02502797A (en)
AT (3) ATE85904T1 (en)
AU (4) AU1722188A (en)
BR (4) BR8807240A (en)
DE (3) DE3874274D1 (en)
ES (3) ES2035150T3 (en)
HU (4) HU209375B (en)
WO (4) WO1989003256A1 (en)

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Also Published As

Publication number Publication date
ATE69981T1 (en) 1991-12-15
ATE85904T1 (en) 1993-03-15
US4920914A (en) 1990-05-01
HU883933D0 (en) 1990-09-28
HUT60168A (en) 1992-08-28
WO1989003256A1 (en) 1989-04-20
ES2035150T3 (en) 1993-04-16
AU1781488A (en) 1989-05-02
JPH02501540A (en) 1990-05-31
US5156682A (en) 1992-10-20
HU207004B (en) 1993-03-01
BR8807241A (en) 1989-10-31
JPH02502797A (en) 1990-09-06
HUT53308A (en) 1990-10-28
ES2028938T3 (en) 1992-07-16
BR8807240A (en) 1990-03-01
JPH03501823A (en) 1991-04-25
HU883513D0 (en) 1990-11-28
HU883421D0 (en) 1990-07-28
WO1989003259A1 (en) 1989-04-20
HU883948D0 (en) 1990-11-28
DE3879354D1 (en) 1993-04-22
DE3878630D1 (en) 1993-04-01
EP0311745B1 (en) 1993-02-24
HUT52998A (en) 1990-09-28
DE3874274D1 (en) 1992-10-08
AU1722188A (en) 1989-05-02
EP0311744A1 (en) 1989-04-19
US5134958A (en) 1992-08-04
WO1989003258A1 (en) 1989-04-20
US4993352A (en) 1991-02-19
ATE80067T1 (en) 1992-09-15
HU213082B (en) 1997-02-28
HU209375B (en) 1994-05-30
BR8807750A (en) 1990-10-09
WO1989003257A1 (en) 1989-04-20
US5063873A (en) 1991-11-12
AU1790188A (en) 1989-05-02
AU1931188A (en) 1989-05-02
ES2040775T3 (en) 1993-11-01
HUT60167A (en) 1992-08-28
EP0311743A1 (en) 1989-04-19
EP0311744B1 (en) 1992-09-02
JPH03501822A (en) 1991-04-25
US4998500A (en) 1991-03-12
HU207469B (en) 1993-04-28
BR8807742A (en) 1990-08-07
EP0311745A1 (en) 1989-04-19

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