EP0311730B1 - Squeegee - Google Patents

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Publication number
EP0311730B1
EP0311730B1 EP87730128A EP87730128A EP0311730B1 EP 0311730 B1 EP0311730 B1 EP 0311730B1 EP 87730128 A EP87730128 A EP 87730128A EP 87730128 A EP87730128 A EP 87730128A EP 0311730 B1 EP0311730 B1 EP 0311730B1
Authority
EP
European Patent Office
Prior art keywords
doctor
profile strip
profile
squeegee
application
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
EP87730128A
Other languages
German (de)
French (fr)
Other versions
EP0311730A1 (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
Application filed by Individual filed Critical Individual
Priority to DE8787730128T priority Critical patent/DE3784724D1/en
Priority to EP87730128A priority patent/EP0311730B1/en
Priority to AT87730128T priority patent/ATE86546T1/en
Priority to AT88107936T priority patent/ATE69981T1/en
Priority to US07/381,680 priority patent/US4993352A/en
Priority to US07/469,562 priority patent/US5156682A/en
Priority to ES198888107936T priority patent/ES2028938T3/en
Priority to DE8888107937T priority patent/DE3874274D1/en
Priority to AU19311/88A priority patent/AU1931188A/en
Priority to PCT/EP1988/000431 priority patent/WO1989003256A1/en
Priority to DE8888107935T priority patent/DE3879354D1/en
Priority to AU17814/88A priority patent/AU1781488A/en
Priority to BR888807241A priority patent/BR8807241A/en
Priority to PCT/EP1988/000432 priority patent/WO1989003257A1/en
Priority to EP88107936A priority patent/EP0311743B1/en
Priority to ES198888107935T priority patent/ES2040775T3/en
Priority to EP88107937A priority patent/EP0311744B1/en
Priority to BR888807240A priority patent/BR8807240A/en
Priority to JP63504693A priority patent/JPH02502797A/en
Priority to ES198888107937T priority patent/ES2035150T3/en
Priority to JP63504087A priority patent/JPH03501822A/en
Priority to AT88107937T priority patent/ATE80067T1/en
Priority to BR888807742A priority patent/BR8807742A/en
Priority to HU883948A priority patent/HU207469B/en
Priority to AU17901/88A priority patent/AU1790188A/en
Priority to DE8888107936T priority patent/DE3866669D1/en
Priority to US07/469,561 priority patent/US5134958A/en
Priority to JP63504300A priority patent/JPH02501540A/en
Priority to JP63504452A priority patent/JPH03501823A/en
Priority to HU883933A priority patent/HU209375B/en
Priority to AU17221/88A priority patent/AU1722188A/en
Priority to PCT/EP1988/000433 priority patent/WO1989003258A1/en
Priority to AT88107935T priority patent/ATE86890T1/en
Priority to EP88107938A priority patent/EP0311745B1/en
Priority to HU883421A priority patent/HU213082B/en
Priority to BR888807750A priority patent/BR8807750A/en
Priority to PCT/EP1988/000434 priority patent/WO1989003259A1/en
Priority to HU883513A priority patent/HU207004B/en
Priority to DE8888107938T priority patent/DE3878630D1/en
Priority to AT88107938T priority patent/ATE85904T1/en
Priority to EP88107935A priority patent/EP0311742B1/en
Priority to US07/255,604 priority patent/US4920914A/en
Publication of EP0311730A1 publication Critical patent/EP0311730A1/en
Priority to US07/364,436 priority patent/US4998500A/en
Priority to US07/501,258 priority patent/US5063873A/en
Application granted granted Critical
Publication of EP0311730B1 publication Critical patent/EP0311730B1/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
    • 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

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 a press-on squeegee, which is integrated in a pivotable profile strip.
  • a squeegee device is used in machines for flat stencil printing, for round stencil applications and / or devices for stencilless full-area applications, the width of the application area or the doctor blade extension can be several meters.
  • sample applications (printing) and / or full-surface applications e.g. impregnation, coating, dyeing, painting
  • the doctor blade used in each case and / or a doctor device comprising it is of crucial importance with regard to the operating and application possibilities of a machine and with regard to the substance application result.
  • a doctor blade device of the type mentioned with the features a) and b) of claim 1 is known from (WO-A 80/02400).
  • this known device comprises a roller doctor integrated in the profile bar, the profile bar being pivotable about the axis of the roller doctor.
  • the pivoting position of the profile strip forming an auxiliary device is to be locked by special mechanical means which must have an adjustable inclined bearing surface for the auxiliary device.
  • the magnetic contact force must be increased considerably towards larger, firmly locked swivel positions. It is therefore not possible to precisely regulate and adjust the application result or the substance application in a wide range or very finely by simply changing the congestion gap.
  • the overall arrangement comprising the paint tube, the support and the doctor blade in a rigid connection can be adjusted with special additional storage and locking means of an application / printing machine into a swivel position to be locked in a fixed manner around the contact line of the doctor blade on an application surface.
  • a squeegee device is also known (DE-A 25 44 784), in which a squeegee roller can be pressed against the back of a separately arranged profiled strip which is spaced from the rolling surface of the squeegee roller.
  • Squeegee devices of this type comprise components which must be kept available to influence the application result and / or adapted to one another for each type of machine. With the squeegee roller, which can be pressed onto the back of the profiled strip, it is possible, in addition to a roller squeegee effect, to produce a doctor blade effect which influences the application result, but only to a limited extent.
  • a squeegee rail (squeegee element) rigidly connected to a support bar and to the handlebars is to be set into an angular position that is firmly locked relative to the application surface by means of a crank lever drive.
  • An air chamber for pressing the doctor blade is arranged between the doctor blade rail and a doctor blade attached to it.
  • the means for locking the squeegee element require a relatively large mounting space, and there is an undesirable dependency of the size of the substance gap on the pneumatic contact pressure. A defined change in the application result during machine operation is not possible.
  • the application quantity, the size of the substance space and / or its shape must be determined with the choice of the doctor blade and / or associated profile strips before starting up a printing device.
  • the wrong choice of a doctor roller, for example in multicolor machines can have a very disadvantageous effect.
  • the invention has for its object to a particularly simple and compact, easy-to-use and in particular universally usable doctor blade device create, with which the application result or the substance application can be adjusted without replacement of parts in a wide range or to a large extent and also very finely acting and in particular can be continuously, precisely and definedly changed during the operation of a machine.
  • the doctor device With the joint arrangement on the profile strip, the doctor device, which can be handled in one piece, ensures universal use in a wide variety of machines and / or setting or changing an application result, in particular during machine operation.
  • the substance storage space can be easily specified or changed with regard to size or shape and / or an application angle of a substance accumulation wedge which is formed in doctor blade extension in front of a doctor blade or in front of its application or pressure line.
  • this eliminates the conventional requirement of a doctor blade exchange and / or the hitherto usual use of several specially designed doctor blades and / or the previously required special choice of the size of magnetizable doctor blade device masses for the doctor blade systems with magnetic pressure which are very advantageous per se.
  • doctor device according to the invention can be operated with a doctor blade or a doctor blade.
  • the mechanical and / or material-elastic joint arranged eccentrically to the longitudinal center of gravity of the profile strip the pivoting mobility of the profile strip is favored.
  • a very advantageous embodiment of the profile element according to the invention is that it is at least one of the Squeegee or profile surface facing the application surface, which is parallel to the longitudinal axis and which forms a working gap and / or application material space which tapers or narrows substantially in the direction of the area of a doctor pressure line.
  • a flat-shaped working gap can be formed with the squeegee / profile surface, which can be changed in particular up to approximately the wedge angle by the profile element pivoting mobility, while for other applications a steep-shaped substance storage space formed with the squeegee / profile surface or working gap is particularly useful.
  • a relatively large pressure is exerted on the substance with a flat working gap or a flat substance wedge, so that the depth of penetration into a substrate is correspondingly large.
  • a relatively large substance space is achieved with a steep working gap, in which case the pressure on the substance is relatively low.
  • a flat-shaped working gap or a steep-shaped working gap can be changed continuously and - if desired - only slightly by the pivoting design of the profile element.
  • a doctor blade is alternatively mounted in a direction facing away from an application surface, the profile strip in particular being cut free on the side facing away from the application surface in such a way that a recess is formed on the rear side of the doctor blade .
  • a very advantageous embodiment consists in that the profile strip is designed to be integrated with a roller doctor blade, in that it is mounted or carried in a receptacle, in particular a rectangular cross section of the profile strip, as a rotatable doctor blade roller.
  • the profile element can be tilted or pivoted about an extension axis of the doctor roller.
  • the web sliding surface of a groove-shaped, axially parallel receptacle can tilt around its apex area, bearing against the doctor roller, whereby this system advantageously acts as a sealing strip, so that no substance can get into the area behind the doctor roller.
  • a magnetizable roller doctor is rotatably supported by the force of a magnetic device arranged in a longitudinal axis parallel to the longitudinal axis of the profile strip in a receptacle, in particular a rectangular cross section, extending in an axis parallel to the longitudinal axis, against the sliding surface or coating .
  • the magnet device comprises a permanent magnet which is arranged along the longitudinal axis of the profile strip and in particular is designed as a support element.
  • the permanent magnet support element consists of a magnetizable material, so that the support element and also the doctor roller itself can be magnetically attracted by means of a magnetic device arranged under the application surface for doctor pressure.
  • the profiled strip and the doctor blade roller form a very practical handling unit which can be installed or removed together in a printing device, in particular in the relatively narrow space in a round stencil, and can also be cleaned as a unit.
  • the permanent magnet doctor roll holder or storage is very suitable for holding a roll of small diameter and long length, since there would be a great risk of bending if such a roll were handled alone.
  • the weight of the profile element together with the weight of the support element advantageously forms a counterweight to the storage area formed in front of the doctor roller in operation. This effect can be increased by increasing the magnetic force of a magnetic device arranged under the application surface. If necessary, however, the force resulting from the structural weight of the profile strip and the weight of the supporting element can also be counteracted by a correspondingly opposite generation of magnetic force of the magnetic device.
  • the back pressure can be adapted, which is brought about by the profile strip with its storage surface, which is designed in particular as a profile surface, and counteracts the substance back pressure, which in turn depends on the respective width of the storage surface, the respective substance viscosity and the respective Machine working speed is dependent.
  • The, in particular rod-shaped, permanent magnet lying above the doctor extension has a double function. Outside of the machine operating state, due to its permanent magnetic force, it acts as a squeegee roller holding rod or bar, while during operation of the machine it serves as a magnetizable mass that can be attracted by the magnetic device to exert profile strip or squeegee pressure.
  • the doctor device can be operated with doctor rolls of relatively small diameter.
  • these are - as is not possible with conventional doctor devices or devices - due to the functional unit formed with the profile bar for applying practically any desired amount of substance.
  • This universal application of a relatively thin doctor roller rod is achieved, in particular, in that, if necessary, an increase in the magnetic pull-on force on the support element or the profile bar which rests on the doctor roller is effected.
  • the advantageous design of the profile element with an integrated doctor blade roller of relatively small diameter is not limited to the mounting of the doctor blade roller with a permanent magnet.
  • the doctor roller rests on a lateral flank of its, in particular, groove-shaped receptacle.
  • a seal against the accumulation substance along the doctor blade extension can be achieved by itself or possibly in addition to the crown system described as advantageous.
  • the roller squeegee is movably mounted in the receptacle transversely to its doctor extension, so that, if desired, it can be brought into contact with one of the (groove) receiving flanks.
  • the profile element supports a circular axis element which is parallel to the longitudinal axis and which runs freely in sliding bearings, that forms a doctor blade or with which a doctor blade is rotatably mounted.
  • the magnetic contact pressure of the profile element can be achieved in particular in that it consists at least partially of magnetizable material.
  • the profile element With regard to the ability of the profile element to be pressed, that is to say a good contact pressure of a squeegee line onto a stencil or onto an application surface along the squeegee extension or the application width, it is advantageous - as has already been pointed out in connection with an expedient embodiment - that the profile element has at least one in the squeegee extension includes in particular continuous support element with a mass serving the doctor pressure.
  • the support element made of magnetizable material such as steel or the like. consists.
  • a supporting element which mechanically stabilizes the profile element in addition to the mass-pressing function, advantageously also in doctor blade extension, that is to say performs a stiffening function, is expediently designed with statically suitable cross sections.
  • statically suitable cross sections In particular, it is provided with a rectangular or circular cross section.
  • the profile element for at least one connection element, preferably in the form of a plug or clamping element for fast Detachable pivot linkage.
  • connection element preferably in the form of a plug or clamping element for fast Detachable pivot linkage.
  • a further special embodiment of the profile element is that it can be pivoted by means of a swivel arm arranged on it.
  • the profile element is held at a certain distance from an application surface or from a template, in which case it is very expedient to design the profile element with a permanently magnetically mounted doctor roller, as has been described above .
  • the squeegee roller can be torn off from the profile element permanent magnet as a result of the profile element distance from the application surface / template, so that it no longer has contact with the web surface of a groove-shaped, in particular rectangular, receptacle.
  • the squeegee roller When the printing device is at a standstill, on the other hand, due to the attraction of the permanent magnet, the squeegee roller jumps into a position in contact with the receiving land surface, in which it lies at a distance from an application surface or template.
  • the handling unit consisting of the profile element and the doctor roller can then simply be removed from the printing device or, conversely, correspondingly easily inserted into it.
  • the stowage or profile surfaces of the profile element can advantageously be flat and / or suitably curved to influence the substance storage space in a special way.
  • the profile element consists at least partially of plastic with regard to easy manufacture and / or advantageous handling. It can be used in printing devices with magnetic pressing means (profile element with at least partially magnetizable mass or magnetizable supporting element), mechanical, hydraulic, and / or pneumatic pressing devices.
  • Each squeegee device 3 extends in a circular stencil 7.
  • a printing blanket 8 is a web forming the substrate or application surface 4, which moves during printing operation by means of the printing blanket 8 in the running direction L and thereby by pressing a squeegee 301, 302 against the Stencil 7 is printed by its pattern with a substance 5 lying in the running direction L in front of a doctor pressure line 36.
  • a profile element 30 which is partly made of plastic, as parallel to one by the doctor extension certain longitudinal or hinge axis 320 extending profile strip 31 is formed.
  • a magnetizable support element 35 with a rectangular cross section in the form of a carrier is embedded in the profile element plastic part.
  • the support element 35 fits snugly around a permanently magnetic support element part 340 lying along the doctor blade extension.
  • a non-magnetizable sliding surface 315 is arranged, which forms the web part of a groove-shaped receptacle 314 having a rectangular cross-section parallel to the longitudinal axis and forming the application surface 4 is open and a roller doctor blade 302 is supported.
  • the flank walls also have a sliding coating. The roller doctor blade is guided freely in the receptacle 314.
  • the profile strip 31 can be magnetically attracted with the support element 35, 340 along its extent evenly in the direction of the printing blanket 8 by means of a magnetic device 6 arranged below it.
  • Each profile strip 31 according to FIGS. 1 and 2 comprises a swivel arm profile 38, the arm axis 380 of which can be pivoted about the hinge axis 320 is perpendicular to the longitudinal axis 312 of the support element.
  • Each profile strip 31 can be tilted or pivoted about an extension axis of the doctor roller 302 in directions K1 or K2.
  • the arm 38 is always mounted in a printing device in such a way that the profile strip 31 can perform a tilting movement around the doctor roller 302.
  • the axis 320 in FIG. 1 can be movable in all polar (radial) coordinate directions lying perpendicular to the joint axis 320.
  • Fig. 2 there is a fixed distance A between the hinge axis 320 and the printing blanket 8. This makes it possible for the doctor roller 302 to be torn off with magnetic attraction by the magnetic device 6 from the receiving land surface 315 for pressing against the template 7, such as this is shown in Fig. 2.
  • the doctor roller 302 bears sealingly on an abutment line 317 parallel to the longitudinal axis of one of the flank surfaces of the receptacle 314.
  • the doctor roller 302 can also be brought into contact with the other receiving flank surface.
  • 3 and 4 each show a profile bar 31, in which a doctor blade 301 is mounted or held in the lower area facing the application surface 4 by means of a profile bearing plate 318 integrated into the profile bar 31.
  • the squeegee 302 is along the line 36 against the stencil 7 or the application surface 4 pressed.
  • a recess 37 is formed on the profile bar 31 in the area of the rear of the doctor bar, ie above the line 36.
  • the profile bearing plate 318 extends to a small extent into the area of the recess.
  • the profile strip 31 is designed to be pivotable by means of a swivel bracket 32 in the form of a hinge joint 321 with a joint axis 320 parallel to the longitudinal axis.
  • the joint 321 is arranged outside the center of gravity or longitudinal axis 312 of the support element 35 on the side of the profile element 31 facing away from the squeegee strip or pressure line 36, so that it can be pivoted about the squeegee pressure line 36 as a result of a pivoting movement S. This can be brought about simply by changing the distance between the hinge axis 320 and the application surface 4, as is shown in FIGS. 3 and 4 with different distances A1 and A2.
  • doctor blades or profile surfaces 311 and 310 facing the longitudinal axis parallel to the application surface 4 are formed on the underside of the profile bar 31, each of which has a working gap tapering or narrowing in the direction of the region of the doctor pressure line 36 and thus one Form application material room 51 or 52.
  • the profile surface 311 lies directly in front of the doctor blade 301 or 302 and, viewed in the opposite direction L, merges into the profile surface 310. This extends to the application surface 4 at a steeper angle than the surface 311.
  • the working wedge or substance storage space 51 formed by the profile surface 311 is therefore always flatter than the wedge-shaped substance space 52.
  • the substance space 51 opens out between the profile surface 311 and the template 7 into the doctor pressure line 36.
  • the surface 311 essentially performs the application function of the squeegee device 3, while the squeegee roller 302 seals against substance along the squeegee line 36 and in particular squeegee 7 cleanly.
  • a doctor blade effect for the application result or adjust the application effect from a predominantly doctor blade effect to a doctor blade effect or vice versa.
  • the swiveling or tilting movement can very advantageously also take place during machine operation in order to change the application result.
  • a doctor blade is always made of the profile element embedding or encompassing it, in this form storing it, in spatial and functional relation to the substance storage spaces held and operated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)

Abstract

A squeegee (3) for the application of application material such as optionally foamable substances of different viscosities, coating materials, paints, adhesives, pastes or the like onto an application surface, having at least one squeegee capable of being pressed such as a coating squeegee or a roller squeegee (302) is universally applicable and has a compact form of construction, the result of application being capable of adjustment, without exchange of components, over a broad range or very finely and, in particular, and of being modified in a continuous, precise and well-defined manner even during operation of a squeegee machine. To this end, the squeegee (3) is constructed as a profile element (30) which is capable of swivelling about a longitudinal axis (320) determined by the extension of the squeegee and carries the squeegee (302). <IMAGE>

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 einer anpreßbaren Rakel, die in eine verschwenkbare Profilleiste integrierte ist. Ein solches Rakelgerät wird in Maschinen für Flachschablonen-Druck, für Rundschablonen-Auftragungen und/oder Vorrichtungen für schablonenlose vollflächige Auftragungen verwendet, wobei die Breite der Auftragsfläche bzw. die Rakelerstreckung mehrere Meter betragen kann. Je nach Maschinentyp lassen sich bemusternde Auftragungen (Bedrucken) und/oder vollflächige Auftragungen (z.B. Imprägnieren, Beschichten, Färben, Lackieren) ausführen. Der jeweils verwendeten Rakel und/oder einer sie umfassenden Rakelvorrichtung kommt maßgebliche Bedeutung hinsichtlich der Bedienungs- und Einsatzmöglichkeiten einer Maschine sowie hinsichtlich des Substanz-Auftragungsergebnisses zu.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 a press-on squeegee, which is integrated in a pivotable profile strip. Such a squeegee device is used in machines for flat stencil printing, for round stencil applications and / or devices for stencilless full-area applications, the width of the application area or the doctor blade extension 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. The doctor blade used in each case and / or a doctor device comprising it is of crucial importance with regard to the operating and application possibilities of a machine and with regard to the substance application result.

Ein Rakelgerät der genannten Art mit den Merkmalen a) und b) des Anspruches 1 ist aus (WO-A 80/02400) bekannt. Zudem umfaßt dieses bekannte Gerät eine in die Profilleiste integrierte Rollrakel, wobei die Profilleiste um die Achse der Rollrakel verschwenkbar ist. Die Schwenkposition der eine Hilfsvorrichtung bildenden Profilleiste ist durch spezielle mechanische Mittel zu arretieren, die eine verstellbare schräge Lagerfläche für die Hilfsvorrichtung aufweisen müssen. Zu größeren fest arretierten Schwenkpositionen hin muß die magnetische Anpreßkraft erheblich erhöht werden. Damit ist es nicht möglich, das Auftragungsergebnis bzw. den Substanzauftrag in einem weiten Bereich oder sehr feinwirkend allein durch Veränderung des Stauspalts genau zu regulieren und einzustellen.A doctor blade device of the type mentioned with the features a) and b) of claim 1 is known from (WO-A 80/02400). In addition, this known device comprises a roller doctor integrated in the profile bar, the profile bar being pivotable about the axis of the roller doctor. The pivoting position of the profile strip forming an auxiliary device is to be locked by special mechanical means which must have an adjustable inclined bearing surface for the auxiliary device. The magnetic contact force must be increased considerably towards larger, firmly locked swivel positions. It is therefore not possible to precisely regulate and adjust the application result or the substance application in a wide range or very finely by simply changing the congestion gap.

Eine andere, zur mechanischen Anpressung einer Streichrakel vorgesehene Rakelvorrichtung (DE-A 30 06 658) umfaßt einen starr mit der Streichrakel und einem Farbrohr verbundenen Träger. Die das Farbrohr, den Träger und die Streichrakel in starrer Verbindung umfassende Gesamtanordnung ist mit besonderen zusätzlichen Lager- und Feststellmitteln einer Auftragungs-/Druckmaschine in eine fest zu arretierende Schwenkposition um die Anlagelinie der Streichrakel an einer Auftragsfläche einzustellen.Another squeegee device (DE-A 30 06 658) provided for the mechanical pressing of a doctor blade comprises a support rigidly connected to the doctor blade and an ink tube. The overall arrangement comprising the paint tube, the support and the doctor blade in a rigid connection can be adjusted with special additional storage and locking means of an application / printing machine into a swivel position to be locked in a fixed manner around the contact line of the doctor blade on an application surface.

Auch ist eine Rakelvorrichtung bekannt (DE-A 25 44 784), bei der eine Rakelrolle an die Rückseite einer gesondert angeordneten, von der Abrollfläche der Rakelrolle distanzierten Profilleiste anpreßbar ist. Solche Rakelgeräte umfassen Bauteile, die zur Beeinflussung des Auftragungsergebnisses und/oder für jeden Maschinentyp aneinander angepaßt zur Verfügung gehalten werden müssen. Mit der an die Profilleistenrückseite anpreßbaren Rakelrolle kann, allerdings nur in praktisch beschränktem Maß, zusätzlich zu einer Rollrakelwirkung eine das Auftragungsergebnis beeinflussende Streichrakelwirkung erzeugt werden. Gemäß einer noch anderen Rakeleinrichtung (DE-A 22 07 935) ist eine mit einem Tragholm und mit Lenkern starr verbundene Rakelschiene (Rakelelement) in eine gegenüber der Auftragsfläche fest zu arretierende Winkellage mittels eines Kurbel-Hebel-Triebs einzustellen. Zwischen der Rakelschiene und einer an dieser befestigten Abstreichklinge ist eine Luftkammer zur Anpressung der Streichklinge angeordnet. Die Mittel zum Arretieren des Rakelelements erfordern einen relativ großen Montageraum, und es besteht eine unerwünschte Abhängigkeit der Größe des Substanzspalts von der pneumatischen Anpreßkraft. Eine definierte Änderung des Auftragungsergebnisses während des Maschinenbetriebs ist nicht möglich. Bei den bekannten Vorrichtungen müssen die Auftragungsmenge, die Größe des Substanzraumes und/oder dessen Form mit der Wahl der Rakel und/oder zugeordneter Profilleisten vor Inbetriebnahme einer Druckvorrichtung bestimmt werden. Insbesondere kann sich die falsche Wahl einer Rakelrolle z.B. bei Mehrfarbenmaschinen sehr nachteilig auswirken.A squeegee device is also known (DE-A 25 44 784), in which a squeegee roller can be pressed against the back of a separately arranged profiled strip which is spaced from the rolling surface of the squeegee roller. Squeegee devices of this type comprise components which must be kept available to influence the application result and / or adapted to one another for each type of machine. With the squeegee roller, which can be pressed onto the back of the profiled strip, it is possible, in addition to a roller squeegee effect, to produce a doctor blade effect which influences the application result, but only to a limited extent. According to yet another squeegee device (DE-A 22 07 935), a squeegee rail (squeegee element) rigidly connected to a support bar and to the handlebars is to be set into an angular position that is firmly locked relative to the application surface by means of a crank lever drive. An air chamber for pressing the doctor blade is arranged between the doctor blade rail and a doctor blade attached to it. The means for locking the squeegee element require a relatively large mounting space, and there is an undesirable dependency of the size of the substance gap on the pneumatic contact pressure. A defined change in the application result during machine operation is not possible. In the known devices, the application quantity, the size of the substance space and / or its shape must be determined with the choice of the doctor blade and / or associated profile strips before starting up a printing device. In particular, the wrong choice of a doctor roller, for example in multicolor machines, can have a very disadvantageous effect.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein besonders einfach und kompakt bauendes, leicht handhabbares und insbesondere universell verwendbares Rakelgerät zu schaffen, mit dem das Auftragungsergebnis bzw. der Substanzauftrag ohne Austausch von Teilen in einem weiten Bereich bzw. in großem Maß sowie auch sehr feinwirkend eingestellt werden kann und insbesondere auch während des Betriebes einer Maschine kontinuierlich, genau und definiert veränderbar sind.In contrast, the invention has for its object to a particularly simple and compact, easy-to-use and in particular universally usable doctor blade device create, with which the application result or the substance application can be adjusted without replacement of parts in a wide range or to a large extent and also very finely acting and in particular can be continuously, precisely and definedly changed during the operation of a machine.

Diese Aufgabe wird gemäß Anspruch 1 gelöst. Das einstückig handhabbare Rakelgerät gewährleistet mit der Gelenkanordnung an der Profilleiste einen universellen Einsatz in den verschiedensten Maschinen und/oder ein Einstellen oder Ändern eines Auftragungsergebnisses insbesondere während eines Maschinenbetriebes. Der Substanzstauraum kann hinsichtlich Größe oder Form und/oder eines Auftragungswinkels eines Substanzstaukeiles, der sich in Rakelerstreckung vor einer Rakel bzw. vor deren Auftrags- oder -anpreßlinie ausbildet, einfach vorgegeben oder verändert werden. Damit entfällt insbesondere das herkömmliche Erfordernis eines Rakelaustausches und/oder die bisher übliche Verwendung von mehreren speziell gestalteten Rakeln und/oder die bisher erforderliche spezielle Wahl der Größe magnetisierbarer Rakelvorrichtungsmassen für die an sich sehr vorteilhaften Rakelsysteme mit magnetischer Anpressung.This object is achieved according to claim 1. With the joint arrangement on the profile strip, the doctor device, which can be handled in one piece, ensures universal use in a wide variety of machines and / or setting or changing an application result, in particular during machine operation. The substance storage space can be easily specified or changed with regard to size or shape and / or an application angle of a substance accumulation wedge which is formed in doctor blade extension in front of a doctor blade or in front of its application or pressure line. In particular, this eliminates the conventional requirement of a doctor blade exchange and / or the hitherto usual use of several specially designed doctor blades and / or the previously required special choice of the size of magnetizable doctor blade device masses for the doctor blade systems with magnetic pressure which are very advantageous per se.

Besonders vorteilhaft ist, daß das erfindungsgemäße Rakelgerät mit einer Streichrakel oder einer Rollrakel betrieben werden kann. Mit den außermittig zur Längsschwerpunktachse der Profilleiste angeordneten mechanischen und/oder material-elastischen Gelenk ist die Schwenkbeweglichkeit der Profilleiste begünstigt.It is particularly advantageous that the doctor device according to the invention can be operated with a doctor blade or a doctor blade. With the mechanical and / or material-elastic joint arranged eccentrically to the longitudinal center of gravity of the profile strip, the pivoting mobility of the profile strip is favored.

Eine sehr vorteilhafter Ausgestalung des erfindungsgemäßen Profilelementes besteht darin, daß es wenigstens eine der Auftragsfläche zugewandte, längsachsenparallele Rakel- oder Profilfläche aufweist, die einen im wesentlichen in Richtung auf den Bereich einer Rakelanpressungslinie sich keilförmig verjüngenden oder sich verengenden Arbeitsspalt und/oder Auftragsmaterialraum ausbildet. Damit ist infolge der schwenkbeweglichen Profilelementgestaltung eine besonders gute Wirkverbindung mit der in dem Profilelement gelagerten Rakel und folglich eine sehr universelle Funktionseinheit zwischen Profilfläche und Rakel ausgebildet. Durch die Schwenkbeweglichkeit ist der Arbeitsspalt bzw. der Substanzstauraum insbesondere auch während eines Maschinenbetriebes in großem Umfang veränderbar. Für bestimmte Auftragungen ist es besonders zweckmäßig, daß mit der Rakel-/Profilfläche ein flachförmiger Arbeitsspalt ausbildbar ist, der durch die Profilelement-Schwenkbeweglichkeit insbesondere bis annähernd zum Keilwinkel Null veränderbar ist, während für andere Anwendungen ein mit der Rakel-/Profilfläche ausgebildeter steilförmiger Substanzstauraum oder Arbeitsspalt besonders zweckmäßig ist. Mit einem flachförmigen Arbeitsspalt bzw. einem flachen Substanzkeil wird ein relativ großer Druck auf die Substanz ausgeübt, so daß die Eindringtiefe in ein Substrat entsprechend groß ist. Mit einem steilförmigen Arbeitsspalt ist ein relativ großer Substanzraum erreicht, wobei in einem solchen Fall der Druck auf die Substanz relativ gering ist. Jeweils ein flachförmiger Arbeitsspalt bzw. ein steilförmiger Arbeitsspalt lassen sich durch die schwenkbewegliche Gestaltung des Profilelements kontinuierlich und - falls gewünscht - nur geringfügig ändern. Besonders zweckmäßig kann es aber auch sein, einem flachförmigen Arbeitsspalt einen relativ steilförmigen Arbeitsspalt vorzuordnen, wobei das Profilelement für diese Ausgestaltung zwei geeignet ausgerichtete Profilflächen aufweist.A very advantageous embodiment of the profile element according to the invention is that it is at least one of the Squeegee or profile surface facing the application surface, which is parallel to the longitudinal axis and which forms a working gap and / or application material space which tapers or narrows substantially in the direction of the area of a doctor pressure line. As a result of the pivotable profile element design, a particularly good operative connection is formed with the doctor blade mounted in the profile element and consequently a very universal functional unit between profile surface and doctor blade. Due to the pivoting mobility, the working gap or the substance storage space can be changed to a large extent, especially during machine operation. For certain applications, it is particularly expedient that a flat-shaped working gap can be formed with the squeegee / profile surface, which can be changed in particular up to approximately the wedge angle by the profile element pivoting mobility, while for other applications a steep-shaped substance storage space formed with the squeegee / profile surface or working gap is particularly useful. A relatively large pressure is exerted on the substance with a flat working gap or a flat substance wedge, so that the depth of penetration into a substrate is correspondingly large. A relatively large substance space is achieved with a steep working gap, in which case the pressure on the substance is relatively low. A flat-shaped working gap or a steep-shaped working gap can be changed continuously and - if desired - only slightly by the pivoting design of the profile element. However, it can also be particularly expedient to arrange a relatively steep-shaped working gap in front of a flat-shaped working gap, the profile element having two suitably oriented profile surfaces for this configuration.

Hinsichtlich einer sehr vorteilhaften Beweglichkeit bzw. Elastizität einer Streichrakelklinge ist vorgesehen, daß eine Streichrakel in von einer Auftragsfläche abgewandter Richtung ausweichlich gelagert ist, wobei insbesondere die Profilleiste auf der der Auftragsfläche abgewandten Seite derart freigeschnitten ist, daß auf der Rückseite der Streichrakel ein Rezeß gebildet ist.With regard to a very advantageous mobility or elasticity of a doctor blade, it is provided that a doctor blade is alternatively mounted in a direction facing away from an application surface, the profile strip in particular being cut free on the side facing away from the application surface in such a way that a recess is formed on the rear side of the doctor blade .

Eine sehr vorteilhafte Ausgestaltung besteht darin, daß die Profilleiste mit einer Rollrakel integriert ausgebildet ist, indem diese in einer Aufnahme insbesondere rechteckigen Querschnitts der Profilleiste als drehbare Rakelrolle gelagert oder getragen ist. Bei dieser Ausgestaltung ist das Profilelement kippbar oder schwenkbar um eine Erstreckungsachse der Rakelrolle. Insbesondere kann die Steg-Gleitfläche einer nutförmigen, achsenparallelen Aufnahme unter Anlage an der Rakelrolle um deren Scheitelbereich kippen, womit diese Anlage vorteilhaft als Dichtleiste wirkt, so daß keine Substanz in den Bereich hinter die Rakelrolle gelangen kann.A very advantageous embodiment consists in that the profile strip is designed to be integrated with a roller doctor blade, in that it is mounted or carried in a receptacle, in particular a rectangular cross section of the profile strip, as a rotatable doctor blade roller. In this embodiment, the profile element can be tilted or pivoted about an extension axis of the doctor roller. In particular, the web sliding surface of a groove-shaped, axially parallel receptacle can tilt around its apex area, bearing against the doctor roller, whereby this system advantageously acts as a sealing strip, so that no substance can get into the area behind the doctor roller.

Bei der Profilelement-Gestaltung mit integrierter Rakelrolle erreicht man dadurch wesentliche Vorteile, daß eine magnetisierbare Rollrakel durch die Kraft einer in einer längsachsenparallen Längsachse der Profilleiste angeordneten Magnetvorrichtung in einer in einer längsachsenparallelen Achse sich erstreckenden Aufnahme insbesondere rechteckigen Querschnitts gegen Gleitfläche oder -belag drehbar gelagert ist. Besonders vorteilhaft ist es, daß die Magnetvorrichtung einen entlang der Profilleistenlängsachse angeordneten, insbesondere als Tragelement ausgebildeten Permanentmagneten umfaßt. Eine weitere sehr zweckmäßige Kombinationsmaßnahme besteht darin, daß das Permanentmagnet-Tragelement aus einem magnetisierbaren Material besteht, so daß Tragelement sowie aber auch die Rakelrolle selbst mittels einer unter der Auftragsfläche angeordneten Magnetvorrichtung zur Rakelanpressung magnetisch anziehbar sind. Damit kann eine Reihe von sehr wesentlichen Vorteilen erreicht werden. Insbesondere bilden Profilleiste und Rakelrolle eine sehr praktische Handhabungseinheit, die gemeinsam in eine Druckvorrichtung, insbesondere in den relativ engen Raum in einer Rundschablone, eingebaut bzw. aus dieser herausgenommen und auch als Einheit gereinigt werden kann.In the case of profile element design with an integrated doctor roller, significant advantages are achieved in that a magnetizable roller doctor is rotatably supported by the force of a magnetic device arranged in a longitudinal axis parallel to the longitudinal axis of the profile strip in a receptacle, in particular a rectangular cross section, extending in an axis parallel to the longitudinal axis, against the sliding surface or coating . It is particularly advantageous that the magnet device comprises a permanent magnet which is arranged along the longitudinal axis of the profile strip and in particular is designed as a support element. Another very useful combination measure consists in that the permanent magnet support element consists of a magnetizable material, so that the support element and also the doctor roller itself can be magnetically attracted by means of a magnetic device arranged under the application surface for doctor pressure. This enables a number of very important advantages to be achieved. In particular, the profiled strip and the doctor blade roller form a very practical handling unit which can be installed or removed together in a printing device, in particular in the relatively narrow space in a round stencil, and can also be cleaned as a unit.

Die Permanentmagnet-Rakelrollenhalterung bzw. Lagerung ist sehr zweckmäßig für die Aufnahme einer Rolle kleinen Durchmessers und großer Länge geeignet, da bei Alleinhandhabung einer solchen Rolle große Verbiegungsgefahr bestehen würde. Das Gewicht des Profilelements zusammen mit dem Gewicht des Tragelements bildet vorteilhaft ein Gegengewicht auf den vor der Rakelrolle im Betrieb gebildeten Staubereich. Dieser Effekt kann durch eine Erhöhung der Magnetkraft einer unter der Auftragsfläche angeordneten Magnetvorrichtung verstärkt werden. Im Bedarfsfall kann aber auch der aus dem Konstruktionsgewicht der Profilleiste sowie dem Tragelementgewicht resultierenden Kraft durch eine entsprechend gegensinnige Erzeugung von Magnetkraft der Magnetvorrichtung entgegengewirkt werden. Durch während des Betriebes veränderbare Magnetkraft der Magnetvorrichtung unterhalb der Auftragsfläche kann der Gegendruck angepaßt werden, der durch die Profilleiste mit ihrer insbesondere als Profilfläche ausgebildeten Staufläche bewirkt ist und dem Substanzstaudruck entgegenwirkt, der seinerseits von der jeweiligen Breite der Staufläche, der jeweiligen Substanzviskosität und der jeweiligen Maschinenarbeitsgeschwindigkeit abhängig ist. Dem über der Rakelerstreckung liegenden insbesondere stabförmigen Permanentmagneten kommt eine Doppelfunktion zu. Außerhalb des Maschinenbetriebszustandes wirkt er infolge seiner Permanentmagnetkraft als Rakelrollen-Haltestab oder -Balken, während er im Betrieb der Maschine als magnetisierbare, von der Magnetvorrichtung anziehbare Masse zur Ausübung der Profilleisten- bzw. Rakelanpressung dient. Mit der (Permanent-) Magnet-Rakelrollenhalterung ist - wie bereits erwähnt - erreicht, daß das Rakelgerät mit Rakelrollen relativ kleinen Durchmessers betrieben werden kann. Diese sind aber dennoch - wie dies bei herkömmlichen Rakelgeräten oder -vorrichtungen nicht möglich ist - infolge der mit der Profilleiste ausgebildeten Funktionseinheit zum Auftrag praktisch jeder gewünschten Substanzmenge verwendbar. Diese universelle Einsatzmöglichkeit eines relativ dünnen Rakelrollenstabes wird u.a. insbesondere auch dadurch erreicht, daß im Bedarfsfall eine Verstärkung der magnetischen Anzieh-Anpreßkraft auf das Tragelement bzw. die Profilleiste, die auf der Rakelrolle aufliegt, bewirkt wird. Die vorteilhafte Ausbildung des Profilelements mit integrierter Rakelrolle relativ kleinen Durchmessers ist nicht auf die Lagerung der Rakelrolle mit Permanentmagnet beschränkt.The permanent magnet doctor roll holder or storage is very suitable for holding a roll of small diameter and long length, since there would be a great risk of bending if such a roll were handled alone. The weight of the profile element together with the weight of the support element advantageously forms a counterweight to the storage area formed in front of the doctor roller in operation. This effect can be increased by increasing the magnetic force of a magnetic device arranged under the application surface. If necessary, however, the force resulting from the structural weight of the profile strip and the weight of the supporting element can also be counteracted by a correspondingly opposite generation of magnetic force of the magnetic device. By changing the magnetic force of the magnetic device below the application surface during operation, the back pressure can be adapted, which is brought about by the profile strip with its storage surface, which is designed in particular as a profile surface, and counteracts the substance back pressure, which in turn depends on the respective width of the storage surface, the respective substance viscosity and the respective Machine working speed is dependent. The, in particular rod-shaped, permanent magnet lying above the doctor extension has a double function. Outside of the machine operating state, due to its permanent magnetic force, it acts as a squeegee roller holding rod or bar, while during operation of the machine it serves as a magnetizable mass that can be attracted by the magnetic device to exert profile strip or squeegee pressure. With the (permanent) magnetic doctor roll holder, as already mentioned, it is achieved that the doctor device can be operated with doctor rolls of relatively small diameter. However, these are - as is not possible with conventional doctor devices or devices - due to the functional unit formed with the profile bar for applying practically any desired amount of substance. This universal application of a relatively thin doctor roller rod is achieved, in particular, in that, if necessary, an increase in the magnetic pull-on force on the support element or the profile bar which rests on the doctor roller is effected. The advantageous design of the profile element with an integrated doctor blade roller of relatively small diameter is not limited to the mounting of the doctor blade roller with a permanent magnet.

Bei der mit integrierter Rollrakel ausgebildeten Profilleiste kann sehr zweckmäßig erreicht werden, daß die Rakelrolle an einer seitlichen Flanke ihrer insbesondere nutförmigen Aufnahme anliegt. Damit kann für sich oder ggf. zusätzlich zu der als vorteilhaft beschriebenen Scheitelanlage eine Abdichtung gegen die Stausubstanz entlang der Rakelerstreckung erreicht werden. Dabei ist es vorteilhaft, daß die Rollrakel quer zu ihrer Rakelerstreckung beweglich in der Aufnahme gelagert ist, so daß nach Wahl eine Anlage an eine der (Nut-)Aufnahmeflanken herbeiführbar ist.In the case of the profiled strip designed with an integrated doctor blade, it can be very expediently achieved that the doctor roller rests on a lateral flank of its, in particular, groove-shaped receptacle. In this way, a seal against the accumulation substance along the doctor blade extension can be achieved by itself or possibly in addition to the crown system described as advantageous. It is advantageous that the roller squeegee is movably mounted in the receptacle transversely to its doctor extension, so that, if desired, it can be brought into contact with one of the (groove) receiving flanks.

Gemäß einer weiteren Ausgestaltung der Erfindung ist hinsichtlich eines sehr einfach bauenden Profilelements mit integrierter Rollrakel vorgesehen, daß das Profilelement ein längsachsenparalleles, in Gleitlagerung frei laufendes kreisrundes Achsenelement lagert, daß eine Rollrakel bildet oder mit dem eine Rollrakel drehbar gelagert ist.According to a further embodiment of the invention, with respect to a very simple profile element with an integrated doctor blade, it is provided that the profile element supports a circular axis element which is parallel to the longitudinal axis and which runs freely in sliding bearings, that forms a doctor blade or with which a doctor blade is rotatably mounted.

Die magnetische Anpreßbarkeit des Profilelements kann insbesondere dadurch erreicht werden, daß es wenigstens teilweise aus magnetisierbarem Material besteht. Hinsichtlich der Anpreßbarkeit des Profilelements, also einer guten Anpreßbarkeit einer Rakellinie auf eine Schablone bzw. auf eine Auftragsfläche entlang der Rakelerstreckung bzw. der Auftragsbreite ist es vorteilhaft - worauf im Zusammenhang mit einer zweckmäßigen Ausgestaltung schon hingewiesen wurde -, daß das Profilelement in Rakelerstreckung mindestens ein insbesondere durchgängiges Tragelement mit einer der Rakelanpressung dienenden Masse umfaßt. Hinsichtlich der magnetischen Anpreßbarkeit ist vorgesehen, daß das Tragelement aus magnetisierbarem Material wie Stahl od.dgl. besteht. Ein Tragelement, das das Profilelement neben der Masse-Anpreßfunktion vorteilhaft auch in Rakelerstreckung mechanisch stabilisiert, also eine Versteifungsfunktion ausübt, wird zweckmäßig mit statisch geeigneten Querschnitten ausgebildet. Insbesondere ist es mit rechteckigem oder kreisrundem Querschnitt vorgesehen.The magnetic contact pressure of the profile element can be achieved in particular in that it consists at least partially of magnetizable material. With regard to the ability of the profile element to be pressed, that is to say a good contact pressure of a squeegee line onto a stencil or onto an application surface along the squeegee extension or the application width, it is advantageous - as has already been pointed out in connection with an expedient embodiment - that the profile element has at least one in the squeegee extension includes in particular continuous support element with a mass serving the doctor pressure. With regard to the magnetic pressability, it is provided that the support element made of magnetizable material such as steel or the like. consists. A supporting element, which mechanically stabilizes the profile element in addition to the mass-pressing function, advantageously also in doctor blade extension, that is to say performs a stiffening function, is expediently designed with statically suitable cross sections. In particular, it is provided with a rectangular or circular cross section.

Es ist es zweckmäßig, daß das Profilelement mindestens ein Anschlußelement, vorzugsweise in Form eines Steck- oder Klemmelementes zur schnell lösbaren Schwenkanlenkung aufweist. Je nach Anordnung eines Gelenks bzw. eines Anschlußelements relativ zu der längsachsenparallelen Schwerpunktlinie des Profilelements ist auf einfache Weise erreicht, daß es entweder rechts- oder linksherum schwenkbar ist.It is expedient that the profile element for at least one connection element, preferably in the form of a plug or clamping element for fast Detachable pivot linkage. Depending on the arrangement of a joint or a connecting element relative to the longitudinal axis of the center of gravity of the profile element, it is easily achieved that it can be pivoted either to the right or to the left.

Eine weitere besondere Ausgestaltung des Profilelementes besteht darin, daß es mittels eines an ihm angeordneten Schwenkarmes schwenkbeweglich ist. Insbesondere mit dieser Ausführungsform kann erreicht werden, daß das Profilelement in einem bestimmten Abstand zu einer Auftragsfläche bzw. zu einer Schablone gehalten wird, wobei es in einem solchen Fall sehr zweckmäßig ist, das Profilelement mit permanentmagnetisch gelagerter Rakelrolle auszubilden, wie dies vorstehend beschrieben worden ist. Im Betriebszustand einer mit dem Rakelgerät arbeitenden Druckvorrichtung kann die Rakelrolle infolge des Profilelement-Abstandes zu der Auftragsfläche/Schablone von dem Profilelement-Permanentmagneten abgerissen werden, so daß sie also keinen Kontakt mehr mit der Stegfläche einer nutförmigen, insbesondere rechteckförmigen Aufnahme hat. Im Betriebsstillstand der Druckvorrichtung hingegen springt die Rakelrolle aufgrund der Anziehungskraft des Permanentmagneten in eine an der Aufnahme-Stegfläche anliegende Position, in der sie in Distanz zu einer Auftragsfläche bzw. Schablone liegt. Die Funktions-bzw. Handhabungseinheit aus Profilelement und Rakelrolle kann der Druckvorrichtung dann einfach entnommen bzw. umgekehrt entsprchend leicht in sie eingesetzt werde.A further special embodiment of the profile element is that it can be pivoted by means of a swivel arm arranged on it. In particular, with this embodiment it can be achieved that the profile element is held at a certain distance from an application surface or from a template, in which case it is very expedient to design the profile element with a permanently magnetically mounted doctor roller, as has been described above . In the operating state of a printing device working with the squeegee device, the squeegee roller can be torn off from the profile element permanent magnet as a result of the profile element distance from the application surface / template, so that it no longer has contact with the web surface of a groove-shaped, in particular rectangular, receptacle. When the printing device is at a standstill, on the other hand, due to the attraction of the permanent magnet, the squeegee roller jumps into a position in contact with the receiving land surface, in which it lies at a distance from an application surface or template. The functional or. The handling unit consisting of the profile element and the doctor roller can then simply be removed from the printing device or, conversely, correspondingly easily inserted into it.

Die Stau- bzw. Profilflächen des Profilelements können je nach dem gewünschten Anwendungsfall vorteilhaft eben und/oder geeignet gekrümmt zur speziellen Beeinflussung des Substanzstauraumes ausgebildet sein.Depending on the desired application, the stowage or profile surfaces of the profile element can advantageously be flat and / or suitably curved to influence the substance storage space in a special way.

Besonders vorteilhaft ist es, daß das Profilelement hinsichtlich einer leichten Herstellung und/oder vorteilhaften Handhabbarkeit wenigstens teilweise aus Kunststoff besteht. Es kann in Druckvorrichtungen mit magnetischen Anpressungsmitteln (Profilelement mit wenigstens teilweise magnetisierbarer Masse oder magnetisierbarem Tragelement), mechanischen, hydraulischen, und/oder pneumatischen Anpreßeinrichtungen eingesetzt werden.It is particularly advantageous that the profile element consists at least partially of plastic with regard to easy manufacture and / or advantageous handling. It can be used in printing devices with magnetic pressing means (profile element with at least partially magnetizable mass or magnetizable supporting element), mechanical, hydraulic, and / or pneumatic pressing devices.

Weitere Zweckmäßigkeiten, Ausgestaltungen und Ausführungsbeispiele der Erfindung gehen aus der im folgenden beschriebenen schematischen Zeichnung hervor. Es zeigen jeweils in Seitenansicht und Schnittdarstellung

Fig.1 und 2
erfindungsgemäße Rakelgeräte mit integrierter, permanentmagnetisch getragener Rakelrolle und
Fig. 3 und 4
erfindungsgemäße Rakelgeräte mit integriert gelagertem Streichgerät sowie magnetisierbarem Tragelement.
Further expediencies, refinements and exemplary embodiments of the invention emerge from the schematic drawing described below. They each show a side view and a sectional view
Fig. 1 and 2
Doctor devices according to the invention with integrated, permanently magnetically carried doctor roller and
3 and 4
Doctor devices according to the invention with an integrated coating device and a magnetizable support element.

In Fig.1 bis 4 ist jeweils ein Rakelgerät 3 in einer Maschine für eine Rundschablonen-Auftragung dargestellt. Jedes Rakelgerät 3 erstreckt sich in einer Rundschablone 7. Zwischen dieser und einer Druckdecke 8 liegt eine die Substrat- oder Auftragsfläche 4 bildende Warenbahn, die beim Druckbetrieb mittels der Druckdecke 8 in Laufrichtung L bewegt und dabei durch die Anpressung einer Rakel 301, 302 gegen die Schablone 7 durch deren Muster mit einer in Laufrichtung L vor einer Rakelanpreßlinie 36 liegenden Substanz 5 bedruckt wird.1 to 4 each show a squeegee device 3 in a machine for a circular stencil application. Each squeegee device 3 extends in a circular stencil 7. Between this and a printing blanket 8 is a web forming the substrate or application surface 4, which moves during printing operation by means of the printing blanket 8 in the running direction L and thereby by pressing a squeegee 301, 302 against the Stencil 7 is printed by its pattern with a substance 5 lying in the running direction L in front of a doctor pressure line 36.

In Fig.1 und 2 ist ein Profilelement 30, das teilweise aus Kunststoff besteht, als parallel zu einer durch die Rakelerstreckung bestimmten Längs- bzw. Gelenkachse 320 sich erstreckende Profilleiste 31 ausgebildet. Entlang ihrer Erstreckung ist ein magnetisierbares Tragelement 35 rechtwinkligen Querschnitts in Form eines Trägers in den Profilelement-Kunststoffteil eingebettet. Das Tragelement 35 umgibt satt anliegend ein permanentmagnetisches, entlang der Rakelerstreckung liegendes Tragelementteil 340. An der der Auftragsfläche 4 zugewandten Seite des Tragelements 35 ist eine nicht magnetisierbare Gleitfläche 315 angeordnet, die den Stegteil einer nutförmigen, längsachsenparallelen Aufnahme 314 rechteckigen Querschnitts bildet, die zur Auftragsfläche 4 hin offen ist und eine Rollrakel 302 lagert. Auch die Flankenwandungen tragen einen Gleitbelag. So ist die Rollrakel in der Aufnahme 314 frei laufend geführt.1 and 2 is a profile element 30, which is partly made of plastic, as parallel to one by the doctor extension certain longitudinal or hinge axis 320 extending profile strip 31 is formed. Along its extension, a magnetizable support element 35 with a rectangular cross section in the form of a carrier is embedded in the profile element plastic part. The support element 35 fits snugly around a permanently magnetic support element part 340 lying along the doctor blade extension. On the side of the support element 35 facing the application surface 4, a non-magnetizable sliding surface 315 is arranged, which forms the web part of a groove-shaped receptacle 314 having a rectangular cross-section parallel to the longitudinal axis and forming the application surface 4 is open and a roller doctor blade 302 is supported. The flank walls also have a sliding coating. The roller doctor blade is guided freely in the receptacle 314.

Die Profilleiste 31 ist mit dem Tragelement 35, 340 entlang ihrer Erstreckung gleichmäßig in Richtung auf die Druckdecke 8 mittels eines unter dieser angeordneten Magnetvorrichtung 6 magnetisch anziehbar.The profile strip 31 can be magnetically attracted with the support element 35, 340 along its extent evenly in the direction of the printing blanket 8 by means of a magnetic device 6 arranged below it.

Jede Profilleiste 31 gemäß Fig.1 und 2 umfaßt ein Schwenkarmprofil 38, dessen um die Gelenkachse 320 schwenkbare Armachse 380 senkrecht auf der Tragelement-Längsachse 312 steht. Jede Profilleiste 31 ist um eine Erstreckungsachse der Rakelrolle 302 in Richtungen K1 bzw. K2 kipp- bzw. schwenkbar. Stets wird der Arm 38 in einer Druckvorrichtung so gelagert, daß die Profilleiste 31 um die Rakelrolle 302 eine Kippbewegung ausführen kann. Insbesondere kann die Achse 320 in Fig. 1 in sämtliche senkrecht zu der Gelenkachse 320 liegende Polar-(Radial)Koordinatenrichtungen beweglich sein.Each profile strip 31 according to FIGS. 1 and 2 comprises a swivel arm profile 38, the arm axis 380 of which can be pivoted about the hinge axis 320 is perpendicular to the longitudinal axis 312 of the support element. Each profile strip 31 can be tilted or pivoted about an extension axis of the doctor roller 302 in directions K1 or K2. The arm 38 is always mounted in a printing device in such a way that the profile strip 31 can perform a tilting movement around the doctor roller 302. In particular, the axis 320 in FIG. 1 can be movable in all polar (radial) coordinate directions lying perpendicular to the joint axis 320.

In Fig.1 wird die Aufnahme-Stegfläche 315 entlang der längsachsenparallelen Anlagelinie 316 durch die Wirkung der Magnetvorrichtung 6 in Kombination mit den magnetisierbaren Massen der Tragelementteile 35 und 340 und deren Gewicht auf die Rakelrolle 302 gepreßt, die dadurch ihrerseits entlang ihrer Erstreckung auf die Schablone 7 gepreßt ist. Im Bereich des Rakelrollenscheitelbereichs schwenkt oder kippt die Profilleiste 31 um die dadurch sich in diesem Bereich im Scheitelbereich der Rakelrolle 302 verlagernde Anlagelinie 316.In Figure 1, the receiving land 315 along the longitudinal axis parallel line 316 by the action of Magnet device 6 in combination with the magnetizable masses of the support element parts 35 and 340 and their weight is pressed onto the squeegee roller 302, which in turn is thereby pressed onto the template 7 along its extent. In the region of the doctor roller apex region, the profiled strip 31 pivots or tilts around the contact line 316 which is thereby displaced in this region in the apex region of the doctor roller 302.

In Fig. 2 besteht zwischen der Gelenkachse 320 und der Druckdecke 8 ein fester Abstand A. Dadurch ist es möglich, daß die Rakelrolle 302 unter magnetischer Anziehung durch die Magnetvorrichtung 6 von der Aufnahme-Stegfläche 315 zur Anpressung auf die Schablone 7 abgerissen wird, wie dies in Fig. 2 dargestellt.In Fig. 2 there is a fixed distance A between the hinge axis 320 and the printing blanket 8. This makes it possible for the doctor roller 302 to be torn off with magnetic attraction by the magnetic device 6 from the receiving land surface 315 for pressing against the template 7, such as this is shown in Fig. 2.

In Fig.1 und 2 liegt die Rakelrolle 302 dichtend an einer längsachsenparallelen Anlagelinie 317 einer der Flankenflächen der Aufnahme 314 an. Durch geeignetes Kippen und/oder Verlagern der Gelenkachse 320 kann die Rakelrolle 302 auch an der anderen Aufnahme-Flankenfläche zur Anlage gebracht werden.In FIGS. 1 and 2, the doctor roller 302 bears sealingly on an abutment line 317 parallel to the longitudinal axis of one of the flank surfaces of the receptacle 314. By suitably tilting and / or moving the hinge axis 320, the doctor roller 302 can also be brought into contact with the other receiving flank surface.

Man erkennt, daß die Profilleiste im Betriebsstillstand der Druckvorrichtung, d.h. bei wirkungsloser Magnetvorrichtung 6, zusammen mit der durch den Permanentmagneten 340 im angezogenen Zustand in der Aufnahme 314 gelagerten bzw. getragenen Rakelrolle 302 als einheitliches, einstückiges, quasi einteiliges Bauelement handhabbar ist.It can be seen that the profile bar when the printing device is at a standstill, i.e. when the magnetic device 6 is ineffective, together with the doctor roller 302 which is supported or supported by the permanent magnet 340 in the drawn-in state in the receptacle 314, it can be handled as a uniform, one-piece, quasi-one-piece component.

Fig. 3 und 4 zeigen jeweils eine Profilleiste 31, in der eine Streichrakel 301 im unteren der Auftragsfläche 4 zugewandten Bereich mittels einer in die Profilleiste 31 integrierten Profillagerplatte 318 gelagert bzw. gehalten ist.3 and 4 each show a profile bar 31, in which a doctor blade 301 is mounted or held in the lower area facing the application surface 4 by means of a profile bearing plate 318 integrated into the profile bar 31.

Durch ein in die Profilleiste 31 eingebettetes, in Rakelerstreckung liegendes balkenförmiges Tragelement 35 rechteckigen Querschnitts mit magnetisierbarer Masse, das oberhalb der Rakel 301 im Bereich ihres freien Endes angeordnet ist, wird die Rakel 302 entlang der Linie 36 gegen die Schablone 7 bzw. die Auftragsfläche 4 gepreßt. An der Profilleiste 31 ist im Bereich der Rückseite der Rakelleiste, also oberhalb der Linie 36 ein Rezeß 37 gebildet. Dabei erstreckt sich die Profillagerplatte 318 um ein geringes Maß bis in den Bereich des Rezesses.By means of a beam-shaped support element 35 of rectangular cross section with magnetizable mass embedded in the squeegee extension and lying in the squeegee extension, which is arranged above the squeegee 301 in the region of its free end, the squeegee 302 is along the line 36 against the stencil 7 or the application surface 4 pressed. A recess 37 is formed on the profile bar 31 in the area of the rear of the doctor bar, ie above the line 36. The profile bearing plate 318 extends to a small extent into the area of the recess.

In Fig. 3 und 4 ist die Profilleiste 31 mittels einer Schwenkhalterung 32 in Form eines Scharniergelenks 321 mit längsachsenparalleler Gelenkachse 320 schwenkbeweglich gestaltet. Das Gelenk 321 ist jeweils außerhalb der Schwerpunktslinie oder Längsachse 312 des Tragelements 35 an der der Rakelleiste bzw. -anpreßlinie 36 abgewandten Seite des Profilelements 31 angeordnet, so daß es um die Rakelanpreßlinie 36 infolge einer Schwenkbewegung S schwenkbeweglich ist. Diese kann einfach mittels einer Abstandsänderung der Gelenkachse 320 gegenüber der Auftragsfläche 4 herbeigeführt werden, wie dies in Fig. 3 und 4 mit unterschiedlichen Abständen A1 und A2 dargestellt ist.3 and 4, the profile strip 31 is designed to be pivotable by means of a swivel bracket 32 in the form of a hinge joint 321 with a joint axis 320 parallel to the longitudinal axis. The joint 321 is arranged outside the center of gravity or longitudinal axis 312 of the support element 35 on the side of the profile element 31 facing away from the squeegee strip or pressure line 36, so that it can be pivoted about the squeegee pressure line 36 as a result of a pivoting movement S. This can be brought about simply by changing the distance between the hinge axis 320 and the application surface 4, as is shown in FIGS. 3 and 4 with different distances A1 and A2.

In Fig.1 bis 4 sind jeweils an der Unterseite der Profilleiste 31 der Auftragsfläche 4 zugewandte, längsachsenparallelen Rakel- oder Profilflächen 311 und 310 ausgebildet, die jeweils einen in Richtung auf den Bereich der Rakelanpressungslinie 36 sich keilförmig verjüngenden oder sich verengenden Arbeitsspalt und damit einen Auftragsmaterialraum 51 bzw. 52 ausbilden. Die Profilfläche 311 liegt unmittelbar vor der Rakel 301 bzw. 302 und geht, in Gegen-Laufrichtung L gesehen, in die Profilfläche 310 über. Diese verläuft zu der Auftragsfläche 4 in einem steileren Winkel als die Fläche 311. Der durch die Profilfläche 311 gebildete Arbeitskeil bzw. Substanzstauraum 51 ist also stets flacher als der keilförmige Substanzraum 52. Der Substanzraum 51 mündet zwischen Profilfläche 311 und Schablone 7 in die Rakelanpreßlinie 36.In FIGS. 1 to 4, doctor blades or profile surfaces 311 and 310 facing the longitudinal axis parallel to the application surface 4 are formed on the underside of the profile bar 31, each of which has a working gap tapering or narrowing in the direction of the region of the doctor pressure line 36 and thus one Form application material room 51 or 52. The profile surface 311 lies directly in front of the doctor blade 301 or 302 and, viewed in the opposite direction L, merges into the profile surface 310. This extends to the application surface 4 at a steeper angle than the surface 311. The working wedge or substance storage space 51 formed by the profile surface 311 is therefore always flatter than the wedge-shaped substance space 52. The substance space 51 opens out between the profile surface 311 and the template 7 into the doctor pressure line 36.

Man erkennt, daß durch eine Schwenkbewegung der Profilleiste 31 um die Rakelrolle 302 (Fig.1 und 2) bzw. um die Scharnier-Gelenkachse 320 (Fig. 3 und 4) eine einfache und gezielte Veränderung der Substanzstauräume 51 und 52 erfolgt. Der Stauraum 51 bzw. die Profilfläche 311 wirkt unmittelbar mit der an die Rakellinie 36 angepreßten Rakelleiste zusammen. Z.B. bildet die Profilfläche 311 in Fig.1 einen relativ flachen Arbeitsspalt r aus. Mit einem flachen Arbeitsspalt unmittelbar vor der Rakelrolle ist erreicht, daß die Fläche 311 im wesentlichen die Auftragsfunktion des Rakelgeräts 3 ausübt, während die Rakelrolle 302 entlang der Rakellinie 36 gegen Substanz abdichtet und insbesondere die Schablone 7 sauber rakelt.It can be seen that a simple and targeted change of the substance storage spaces 51 and 52 takes place by a pivoting movement of the profile strip 31 about the doctor roller 302 (FIGS. 1 and 2) or about the hinge joint axis 320 (FIGS. 3 and 4). The storage space 51 or the profile surface 311 interacts directly with the squeegee strip pressed against the squeegee line 36. E.g. The profile surface 311 in FIG. 1 forms a relatively flat working gap r. With a flat working gap directly in front of the squeegee roller, it is achieved that the surface 311 essentially performs the application function of the squeegee device 3, while the squeegee roller 302 seals against substance along the squeegee line 36 and in particular squeegee 7 cleanly.

Mit der Kombination einer bzw. mehrerer Profilleistenflächen mit der Rakelrolle bzw. der Streichrakel ist unter Veränderung der Schwenkposition der Profilleiste 31 und damit Veränderung der Anstellwinkel der Profilflächen mit ein und demselben Rakelgerät auf sehr wirksame und universelle Weise erreicht, eine Streichrakelwirkung für das Auftragungsergebnis bzw. die Auftragungswirkung von einer überwiegenden Rollrakelwirkung zu einer Streichrakelwirkung oder umgekehrt feinwirkend einzustellen. Die Schwenk- bzw. Kippbewegung kann sehr vorteilhaft auch während des Maschinenbetriebs zur Veränderung des Auftragungsergebnisses erfolgen. Stets wird erfindungsgemäß eine Rakel von dem sie einbettenden bzw. umgreifenden, in dieser Form sie lagernden Profilelement in räumlicher und funktioneller Beziehung zu den Substanzstauräumen gehalten und betrieben. Mit dem erfindungsgemäßen, die Rakel integrierenden Rakelgerät ist eine Bau- und Funktionseinheit erreicht, die besonders einfach handhabbar, universell einsetzbar und für eine Vielzahl unterschiedlicher Auftragungsergebnisse schwenkbeweglich steuerbar ist.With the combination of one or more profiled strip surfaces with the doctor blade roller or the doctor blade, changing the pivoting position of the profiled strip 31 and thus changing the angle of attack of the profiled surfaces with one and the same doctoring device is achieved in a very effective and universal manner, a doctor blade effect for the application result or adjust the application effect from a predominantly doctor blade effect to a doctor blade effect or vice versa. The swiveling or tilting movement can very advantageously also take place during machine operation in order to change the application result. According to the invention, a doctor blade is always made of the profile element embedding or encompassing it, in this form storing it, in spatial and functional relation to the substance storage spaces held and operated. With the squeegee device according to the invention which integrates the squeegee, a structural and functional unit is achieved which is particularly easy to handle, can be used universally and can be pivotally controlled for a large number of different application results.

BezugszeichenlisteReference symbol list

33rd
RakelgerätSqueegee
3030th
ProfilelementProfile element
301301
StreichrakelSqueegee
302302
RollrakelSqueegee
3131
ProfilleisteProfile bar
310310
Rakel-/ProfilflächeSqueegee / profile surface
311311
Rakel-/ProfilflächeSqueegee / profile surface
312312
LängsachseLongitudinal axis
314314
Aufnahmeadmission
315315
Gleitfläche, -belagSliding surface, lining
316316
AnlagelinieInvestment line
317317
AnlagelinieInvestment line
318318
Profil-LagerplatteProfile bearing plate
3232
Schwenkhalterung, GelenkSwivel bracket, joint
320320
GelenkachseHinge axis
321321
ScharniergelenkHinge joint
340340
PermanentmagnetPermanent magnet
3535
Tragelement, TrägerSupporting element, carrier
3636
RakelanpreßlinieDoctor pressure line
3737
RezeßRecessive
3838
SchwenkarmSwivel arm
44th
AuftragsflächeOrder area
55
AuftragsmaterialOrder material
5151
AuftragsmaterialraumOrder material room
5252
SubstanzstauraumSubstance storage space
66
MagnetvorrichtungMagnetic device
77
RundschabloneCircular template
88th
DruckdeckePrinting blanket
AA
Abstanddistance
SS
SchwenkbewegungSwivel motion
LL
LaufrichtungRunning direction
rr
ArbeitsspaltWorking gap
K1K1
KippbewegungTilting movement
K2K2
KippbewegungTilting movement

Claims (15)

  1. Doctor device (3) for the application of material (5), such as optionally foamable substances having differing viscosity, coating substances, lacquers, adhesives, pastes, etc. to an application surface (4) having the following features:
    a) the doctor device (3) comprises a profile strip (30) forming a one-piece handling unit and in which a doctor (301, 302) is integrated;
    b) the profile strip (30) and/or parts (35, 301, 302, 340) integrated therein are at least partially made from a material on which is acting a magnetic field of a magnetic device (6) arranged below the application surface in order to magnetically press the doctor (301, 302) toward the application surface (4);
    c) a part integrated in the profile strip (30) is either formed as a coating blade doctor (301) or as a roll doctor (302);
    d) a mechanical or material-elastic hinge (32) is arranged on the profile strip (30), the longitudinal axis of the hinge forming a joint axis (320) determined by the extension of the doctor and extending excentrically with respect to the longitudinal centre of gravity axis (312) of the profile strip (30), the latter axis (312) being parallel with the longitudinal axis, wherein
    e) the profile strip (30) is pivotable about the joint axis (320) as well as about the pressing line (36) of the coating blade doctor (301) and about the roll doctor (302), respectively, so that the profile strip (30), under the influence of the magnetic force of the magnetic device, can be retained in a tilting position being determined by the spacing (A, A1, A2) of the joint (32) from the application surface (4).
  2. Doctor device according to claim 1, characterized in that the profile strip (30) has at least one longitudinally axially parallel doctor or profile surface (310, 311) facing the application surface (4) and which forms an operating gap (r) and/or application material area (51, 52) tapering in wedge-shaped manner in the direction of the vicinity of a doctor pressing line (36).
  3. Doctor device according to claim 2, characterized in that a low-angle shaped operating gap (r) can be formed by the doctor/profile surface (311), the gap being changeable by the pivoting movability of the profile strip, in particular up to a wedge angle of approximately zero.
  4. Doctor device according to claim 2, characterized in that a high-angle shaped operating gap (r) can be formed by the doctor/profile surface (310), the gap being changeable by the pivoting movability of the profile strip.
  5. Doctor device according to one of the claims 1 to 4, characterized in that a coating doctor (301) can give way in the direction remote from the application surface (4), wherein in particular the profile strip (31) is cut free on the side remote from the application surface (4) in such a manner that a recess (37) is formed on the back side of the coating doctor (301).
  6. Doctor device according to one of the claims 1 to 4, characterized in that a roll doctor (302) is carried or mounted as a freely running doctor roll in a receptacle (314) of the profile strip (31), the receptacle preferably having a rectangular cross-section.
  7. Doctor device according to claim 6, characterized in that a magnetizable roll doctor (302) is mounted in a receptacle (314), preferably having a rectangular cross-section, in free running manner against a sliding surface or coating (315) of the profile strip (31) by the force of a magnetic device being arranged in an axis (312) which is parallel to the longitudinal axis of the profile strip (31).
  8. Doctor device according to claim 7, characterized in that the magnetic device (34) comprises a permanent magnet (340) arranged along the longitudinal axis (312) of the profile strip and in particular constructed as a support member (35).
  9. Doctor device according to one of the claims 6 to 8, characterized in that the roll doctor (302) is movably mounted in the receptacle (314) transversely to its extension.
  10. Doctor device according to one of the claims 1 to 9, characterized in that the profile strip (30) comprises at least one support member (35), in particular through support member, extending with the doctor and having a mass serving for the pressing of the doctor.
  11. Doctor device according to claim 10, characterized in that the support member (35) is made from a magnetizable material such as steel or the like.
  12. Doctor device according to claim 10 or 11, characterized in that the support member (35) has a rectangular or circular cross-section.
  13. Doctor device according to one of the claims 1 to 12, characterized in that the profile strip (30) comprises at least one connecting element, preferably in the form of a plug or clamp element, for the rapidly detachable pivoting connection.
  14. Doctor device according to one of the claims 1 to 13, characterized in that the profile strip (30) is pivotable by means of a swivelling arm (38) arranged on the profile strip.
  15. Doctor device according to one of the claims 1 to 14, characterized in that the profile strip (30) is partially made of plastic.
EP87730128A 1987-10-10 1987-10-10 Squeegee Expired - Lifetime EP0311730B1 (en)

Priority Applications (44)

Application Number Priority Date Filing Date Title
DE8787730128T DE3784724D1 (en) 1987-10-10 1987-10-10 Squeegee.
EP87730128A EP0311730B1 (en) 1987-10-10 1987-10-10 Squeegee
AT87730128T ATE86546T1 (en) 1987-10-10 1987-10-10 SQUEEGEE.
AT88107936T ATE69981T1 (en) 1987-10-10 1988-05-18 SQUEEGEE.
US07/381,680 US4993352A (en) 1987-10-10 1988-05-18 Squeegee device
US07/469,562 US5156682A (en) 1987-10-10 1988-05-18 Pressing device for doctor having segments linked together
ES198888107936T ES2028938T3 (en) 1987-10-10 1988-05-18 DISTRIBUTOR REGULATION DEVICE.
DE8888107937T DE3874274D1 (en) 1987-10-10 1988-05-18 APPLICATION DEVICE.
AU19311/88A AU1931188A (en) 1987-10-10 1988-05-18 Blade-coating mechanism
PCT/EP1988/000431 WO1989003256A1 (en) 1987-10-10 1988-05-18 Blade-coating mechanism
DE8888107935T DE3879354D1 (en) 1987-10-10 1988-05-18 Squeegee.
AU17814/88A AU1781488A (en) 1987-10-10 1988-05-18 Squeegee mechanism
BR888807241A BR8807241A (en) 1987-10-10 1988-05-18 SQUEEGEE EQUIPMENT FOR THE APPLICATION OF MATERIAL
PCT/EP1988/000432 WO1989003257A1 (en) 1987-10-10 1988-05-18 Squeegee mechanism
EP88107936A EP0311743B1 (en) 1987-10-10 1988-05-18 Squeegee device
ES198888107935T ES2040775T3 (en) 1987-10-10 1988-05-18 SCRAPER DEVICE.
EP88107937A EP0311744B1 (en) 1987-10-10 1988-05-18 Coating device
BR888807240A BR8807240A (en) 1987-10-10 1988-05-18 SQUEEGEE EQUIPMENT FOR THE APPLICATION OF MATERIAL
JP63504693A JPH02502797A (en) 1987-10-10 1988-05-18 doctor device
ES198888107937T ES2035150T3 (en) 1987-10-10 1988-05-18 APPARATUS FOR THE APPLICATION OF COATING MATERIALS.
JP63504087A JPH03501822A (en) 1987-10-10 1988-05-18 Coating device
AT88107937T ATE80067T1 (en) 1987-10-10 1988-05-18 APPLICATION DEVICE.
BR888807742A BR8807742A (en) 1987-10-10 1988-05-18 APPLIANCE FOR APPLYING MATERIALS
HU883948A HU207469B (en) 1987-10-10 1988-05-18 Applying device
AU17901/88A AU1790188A (en) 1987-10-10 1988-05-18 Spreading appliance
DE8888107936T DE3866669D1 (en) 1987-10-10 1988-05-18 Squeegee.
US07/469,561 US5134958A (en) 1987-10-10 1988-05-18 Doctor apparatus for applying fluid material to a substrate
JP63504300A JPH02501540A (en) 1987-10-10 1988-05-18 doctor device
JP63504452A JPH03501823A (en) 1987-10-10 1988-05-18 Coating device
HU883933A HU209375B (en) 1987-10-10 1988-05-18 Decolourizing device
AU17221/88A AU1722188A (en) 1987-10-10 1988-05-18 Spreading appliance
PCT/EP1988/000433 WO1989003258A1 (en) 1987-10-10 1988-05-18 Spreading appliance
AT88107935T ATE86890T1 (en) 1987-10-10 1988-05-18 SQUEEGEE.
EP88107938A EP0311745B1 (en) 1987-10-10 1988-05-18 Coating device
HU883421A HU213082B (en) 1987-10-10 1988-05-18 Squeegee mechanism
BR888807750A BR8807750A (en) 1987-10-10 1988-05-18 APPLIANCE FOR THE APPLICATION OF MATERIALS
PCT/EP1988/000434 WO1989003259A1 (en) 1987-10-10 1988-05-18 Spreading appliance
HU883513A HU207004B (en) 1987-10-10 1988-05-18 Applying device
DE8888107938T DE3878630D1 (en) 1987-10-10 1988-05-18 APPLICATION DEVICE.
AT88107938T ATE85904T1 (en) 1987-10-10 1988-05-18 APPLICATION DEVICE.
EP88107935A EP0311742B1 (en) 1987-10-10 1988-05-18 Coating device
US07/255,604 US4920914A (en) 1987-10-10 1988-10-11 Doctoring installation and doctoring device
US07/364,436 US4998500A (en) 1987-10-10 1989-07-13 Squeegee device
US07/501,258 US5063873A (en) 1987-10-10 1990-03-29 Doctor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87730128A EP0311730B1 (en) 1987-10-10 1987-10-10 Squeegee

Publications (2)

Publication Number Publication Date
EP0311730A1 EP0311730A1 (en) 1989-04-19
EP0311730B1 true EP0311730B1 (en) 1993-03-10

Family

ID=8198370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87730128A Expired - Lifetime EP0311730B1 (en) 1987-10-10 1987-10-10 Squeegee

Country Status (3)

Country Link
EP (1) EP0311730B1 (en)
AT (1) ATE86546T1 (en)
DE (1) DE3784724D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2445550A (en) * 2007-01-15 2008-07-16 Dek Int Gmbh Wiper blade holder for use in a screen printing machine and wiper blade therefor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399832B (en) * 1989-04-18 1995-07-25 Zimmer Johannes Squeegee device with a cross or support bar holding the squeegee for application or FOR FLOWING ON OR FLOWING ON FLOWABLE OR ALSO POWDERED SUBSTANCES ON LEVEL SURFACES, RAILWAYS OR THE LIKE.
AT401480B (en) * 1989-07-06 1996-09-25 Zimmer Johannes SCRAPER FOR APPLICATION OR APPLY AND SCRATCH OR FOR THE DOSED APPLICATION OF FLOWABLE OR FLOWABLE SUBSTANCES
DE9112032U1 (en) * 1991-09-23 1993-01-28 Zimmer, Johannes, Klagenfurt, Kaernten, At
BR112014032532A2 (en) 2012-06-25 2017-06-27 3M Innovative Properties Co surface coating devices
CN109201350A (en) * 2018-11-09 2019-01-15 四川北方硝化棉股份有限公司 Conveyer centrifugal scraper structure
CN114370146A (en) * 2020-10-15 2022-04-19 广东博鼎建筑科技有限公司 Rotary scraper component, coating device and coating equipment
CN114953595A (en) * 2022-05-17 2022-08-30 亳州市裕同印刷包装有限公司 Scraper mechanism and edge scraping equipment
CN115025927B (en) * 2022-05-25 2024-01-12 青岛优梦家居科技有限公司 Resin finishing equipment for cloth textile dyeing and finishing with leveling function

Citations (1)

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DE2250092A1 (en) * 1972-10-12 1974-04-18 Kuesters Eduard ROTARY SCREEN PRESSURE DEVICE

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AT296927B (en) * 1967-01-31 1972-03-10 Peter Zimmer Device for applying liquid or pasty materials
FR2125633A5 (en) * 1971-02-15 1972-09-29 Mulhouse Alsacien Const
NL7103481A (en) * 1971-03-16 1972-09-19
IT1043186B (en) * 1974-10-15 1980-02-20 Zimmer Johannes PAID APPARATUS
DE3006658A1 (en) * 1979-03-26 1980-10-09 Buser Ag Maschf Fritz STRAIGHT Squeegee
DE3071441D1 (en) * 1979-04-30 1986-04-03 Zimmer Johannes Device using a pressure force with magnetic effect
EP0071014A1 (en) * 1981-07-02 1983-02-09 Fritz Buser Ag Maschinenfabrik Method and element to transfer printing ink to a material in screen printing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2250092A1 (en) * 1972-10-12 1974-04-18 Kuesters Eduard ROTARY SCREEN PRESSURE DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2445550A (en) * 2007-01-15 2008-07-16 Dek Int Gmbh Wiper blade holder for use in a screen printing machine and wiper blade therefor

Also Published As

Publication number Publication date
ATE86546T1 (en) 1993-03-15
DE3784724D1 (en) 1993-04-15
EP0311730A1 (en) 1989-04-19

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