EP0530349A1 - Racle et/ou dispositif a racle. - Google Patents

Racle et/ou dispositif a racle.

Info

Publication number
EP0530349A1
EP0530349A1 EP92908382A EP92908382A EP0530349A1 EP 0530349 A1 EP0530349 A1 EP 0530349A1 EP 92908382 A EP92908382 A EP 92908382A EP 92908382 A EP92908382 A EP 92908382A EP 0530349 A1 EP0530349 A1 EP 0530349A1
Authority
EP
European Patent Office
Prior art keywords
squeegee
pressure
bar
doctor
doctor blade
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.)
Granted
Application number
EP92908382A
Other languages
German (de)
English (en)
Other versions
EP0530349B1 (fr
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
Publication of EP0530349A1 publication Critical patent/EP0530349A1/fr
Application granted granted Critical
Publication of EP0530349B1 publication Critical patent/EP0530349B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B41F15/426—Inking units comprising squeegees or doctors the squeegees or doctors being magnetically attracted
    • 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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material

Definitions

  • the subject matter of the invention presented herewith is a squeegee and / or squeegee device for various uses, such as e.g. coating application or removal of substances on / from flat surfaces, e.g. Goods webs, transport webs, conveyor belts, rollers or the like.
  • doctor blade which consists of at least one preferably one-piece doctor blade holding and pressure bar, the one Doctor blade or its part designed as a working element (working edge or the like) (or inserted into it) at the contact point presses against one or at least one working surface (contact zone), which may also include a template, a screen cylinder or the like. can be.
  • doctor blade work parts are attached to doctor blade holding parts and that these doctor blade holding parts are attached to the respective doctor blade working attached to the machine and in any case held so that the forces required for squeegee pressure are introduced via these holding parts and transferred to the squeegee working part.
  • Squeegee devices or application devices which lie loosely movably on the application surface, including those which are loaded with gravity or weight or by mechanical means, and especially those which are pressed magnetically.
  • Loose or attached to brackets, which are magnetically pressed are known in numerous variants, primarily such squeegees, especially roller squeegees, which are made of magnetizable material, but also those which are connected to parts made of magnetizable material, and pressed or additionally pressed thereby are known.
  • a very general disadvantage inherent in magnetic doctor blade technology is that any magnetizable material can only be magnetized up to a certain degree of saturation and that in practice, between the pole faces of the magnetic device and the doctor blades or magnetizable parts of doctor blade devices to be magnetized , considerable distances have to be bridged. Since these two disadvantages have an additive effect, the designer and the user of such devices often reach the limits of the possible applications. In practical terms, this means that with magnetic doctor devices, in particular magnetic roller doctor blades of small diameter, it is not possible to achieve sufficiently high contact forces, so that their application, which would often be very necessary, has to be dispensed with.
  • the object of the invention thus presented is to eliminate the disadvantages described above which are inherent in the prior art and to provide a versatile doctor blade or doctor blade device which can be used in a variety of ways, works with great precision but is nevertheless very simple in construction and is easy to handle create.
  • the squeegee or squeegee device consists of a squeegee holding and pressure bar and a squeegee bar which is designed or is a working element at the squeegee contact point and which is movable along its entire length in the vertical or approximately vertical direction to the work surface, touching the surface and preferably more than encompassing or engaging half of the cross-sectional circumference of the squeegee strip / the working element; into the groove-shaped recess of the doctor blade holding and pressure bar, which enables this connector connection, is in the area transmitting the doctor pressure force between these two bars, extending over their longitudinal extent, a pressure elastic, the pressure force comparing and / or given if generating element, adjoining both strips and possibly also encompassing the squeegee in a U-shape and thus also touching the two side surfaces.
  • This new constructional fact according to the invention results in a fundamentally new, furious fact, which causes the working edge of the working element to lie against the working surface or stencil in a completely uniform, adapting manner, and consequently results in high-precision squeegee work, but apart from the design features described and illustrated here also the material selection and cross-sectional dimensioning corresponding to the idea of the invention in functional terms, ie results-based, is essential.
  • FIGS. 2 to 17 The squeegees and squeegee devices constructed in accordance with the invention shown in FIGS. 2 to 17 were preceded by FIG. 1 taken from the prior art, which illustrates one of the efforts made up to now to increase the contact pressure of a magnetically pressed squeegee roller of relatively small diameter: the second roller placed on the work roll is intended to increase the contact pressure of the work roll; the holder required for this is designed as a second function as a height-adjustable stowage profile strip.
  • FIG. 2 shows an illustration of the essential inventive facts or design features of a doctor device 1 designed according to the invention in an abstract representation: a doctor holder and pressure bar 2 with a U-shaped cross section, which is formed by a recess-shaped recess 3, with a this groove-shaped recess 3 inserted pressure-elastic element 5, which in this exemplary embodiment according to FIG. 2 is designed as a further profiled strip, again with a U-shaped cross section, and for the purpose of increasing it the pressure elasticity may have incorporated a cavity 56.
  • the doctor profile strip or the actual doctor element 4 is located adjacent to this pressure-elastic profile element 5, which is inserted into the groove-shaped recess 3 so that it can be moved by sliding.
  • This doctor element 4 is also held in the groove-shaped recess 33 of the elastic profile element 5 so that it can be moved .
  • the squeegee and pressure bar 2 is held between sliding elements 6 so that it can be moved.
  • the squeegee strip 4 touches in the work area an optionally flat or curved or rounded work surface 7 or material web 72 lying thereon (not shown in the drawing) (work table or magnetic work table 71, counter roller, magnetic roller with magnet 71).
  • the doctor pressure is - abstracted by a strong arrow 203 - caused either by mechanical means (not shown) or by magnetic attraction, for which it is intended according to the invention to manufacture the doctor and pressure bar 2 (at least partially) from magnetic material.
  • doctor pressure generation can be combined with one another.
  • the elements generating the magnetic force can be connected to the doctor blade holding and pressure bar 2 and that in this case the work table or the work roll consists of magnetizable material.
  • the small double arrow inserted in the arrow 203 representing the contact pressure indicates the sliding mobility of the strips or the elements 2 and 4 in the direction of the vertical axis on the work surface or their relative displaceability relative to one another, which is one of the essential features of the invention.
  • the other figures show pressure-elastic bodies in different design variants, which, however, do not grip the doctor element 4 in a touching manner on three surfaces as shown in FIG. 2, but only the side or surface opposite the doctor contact area touch the squeegee 4, at which the Rakelaipreßkraft is introduced into the squeegee.
  • the doctor element which is a roller in some exemplary embodiments, is movable in the recess 3 in the doctor holding and pressing line. held, which can also be held pivotably.
  • FIG. 3 to 5 show three further exemplary embodiments of doctor devices 1 constructed according to the invention and their essential structural parts.
  • Fig. 3 the squeegee and pressure bar
  • the bar 2 is slidably held by two bars 6 which are attached in a fixed manner.
  • the working element 41 is rounded and lies against the working surface 7.
  • the strips 6 are U-shaped as a holding body.
  • the squeegee strip 44 has a slide-bearing-shaped recess into which a working element 43 is inserted so as to be rotatable or fixed in terms of rotation.
  • the work surface is designed as a magnetic table 71 on which a web 72 and a template 73 lie.
  • FIG. 5 corresponds to a combination of FIGS. 3 and 4, it being shown in dashed lines that the bar 2, if a large Rakelaipreßkraft is required for which the magnetizable mass of the bar 2 is too low, depending on Requirement enlarged as a bar 21 can be formed.
  • the intermediate bar 42 is drawn in dashed lines because such a bar could be omitted in the particular exemplary embodiment of FIG. 5 if the working element 43 is used in a rotationally fixed version.
  • FIG. 6 essentially corresponds to FIG. 3, differently from this the working element 45 is shaped at an acute angle and the squeegee pressure is brought about by the weight of the bar 2 and by additional weights 22, which are only shown symbolically. Instead of one element 5, two elements 51 and 52 having the same function are used. In Fig. 7, a support beam 61, for example with screw connections 62, is fixed in place, similar to that shown in Fig. 4. As shown in FIGS. 4 and 5 and in other figures (but not shown in FIG.
  • the contact 2 can be introduced into the bar 2 by means of a magnetic force caused by a magnetic device and / or a pressure generated by means of a liquid or gaseous medium become; in this case, the vertical sliding mobility of the bar 2 is only effective when the magnetic force is switched on.
  • the combination of two different contact forces can bring about a correspondingly greater total contact force by adding together.
  • one of the two contact pressure components can be used to make a basic setting of the contact pressure, which is correctly dimensioned for the slowest possible working speed, and can then use the second contact pressure component, for example, to increase the contact pressure required when the speed increases can be carried out automatically by means of electronic control - the pressing force can also be reduced if the speed is reduced.
  • a bar 23 is held on a joint 124 so that it can rotate and an elastic doctor blade 47 is inserted into the bar 46.
  • the strip 24 has a circular cylindrical shape over its entire length, but it would suffice if only those points were formed in a circular or rounded manner at which the slide holding parts 64 abut.
  • the bar 4 is formed with an acute-angled working element 45, the recess 3 is arranged asymetrically in the bar 24 and is provided in the opening area with projections 31 which prevent the bar 4 from undesirably sliding out when the bar 24 is lifted off .
  • An ann 25 is fastened to the bar 24, by means of which the pivoting mobility is limited by means of adjustable stops 26.
  • Fig. 10 is similar to the embodiment of Fig. 9, but is torn off Drawn arm 27 part of an auxiliary device, on which the bar 24 is rotatably fixed - possibly vertically movable, possibly oscillating - is held.
  • a flexurally and pressure-elastic working element 47 is inserted into the strip 46, the bending of which results from the movement of the template 73 in the direction of the arrow 74 and from the magnetically effected squeegee pressure.
  • a stowage profile bar 28, which can be pivoted and rotated about this bar, is plugged onto the bar 24, the pivoting movement of this bar 28 is actuated by a swivel device 29.
  • FIG. 11 shows a bar 2 with extension bars 201, by means of which the bar 2 is held on threaded spindles 202 in such a way that the bar 2 can be moved in height or its distance from the working surface 72 can be adjusted.
  • the strip 2 is pressed against a pressure-elastic element 53, which is not solid, but solid. Changing the distance of the bar 2 changes the contact pressure.
  • FIGS. 12 to 14 show design examples of doctor devices according to the invention, each using more than one doctor blade or doctor bar, which can be designated by the generic term splitting doctor blades: between two doctor bars - which could also be called sealing strips in this type of function a gap-shaped or trough-shaped substance space 75 is formed, into which the substance is supplied through a gap 76 and optionally through bores 77 from either a trough space 78 or from a closed cavity 79. The supply in this cavity takes place through an opening 80.
  • the trough space 78 is shown in Fig. 12 by e.g. two Vierkan tubes 81 and 82 formed, which are sealingly attached to the comb-shaped bar 2 and to stirrup plates 83.
  • the trough space is formed by a trough wall 84 and by the working surface 7 and by the end plates 83. Except for the
  • a bar 2 is also present in FIG. 13, a bar 2 a, which on the Trough wall 84 is fastened and a strip 4a seals against the surface 7. 13, the contact pressure is introduced magnetically and / or, for example, pneumatically or hydraulically through the element 5, for which a counter-support shown in broken lines is required as an auxiliary device.
  • a D ⁇ ppel doctor blade 48 with two elements 54, 55 is inserted into the recess of the bar 2.
  • the substance is supplied through a hollow body 85.
  • FIG. 16 shows an embodiment in which the bar 4 is U-shaped in addition to the embodiment variants shown in other figures, as a result of which four times the sliding surface is in contact with the bar 2, the doctor blade pressure is applied magnetically and / or mechanically e.g. with hydraulic auxiliary devices drawn in dashed lines, the same situation also applies to FIG. 12.
  • FIG. 17 a device in the type of construction corresponding to FIG. 16 and similar to the types of function shown in FIGS. 12 to 15 is turned through 180 °, i.e. working from bottom to top.
  • the squeegee strip 4 is designed as a hollow body 49 which has a working element 45 shaped at an acute angle and a working element 43 with a circular cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Eye Examination Apparatus (AREA)
  • Screen Printers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Polarising Elements (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Racle et/ou dispositif à racle pour diverses applications, comme p.ex. application par couchage ou enlèvement de substances avec au moins une racle composée d'au moins une barre de maintien et de pression de racle faite d'une seule pièce, laquelle presse une barre de racle ou sa partie conçue comme élément de travail au point d'application, avec intégration d'un élément élastique disposé entre les deux barres, contre une ou au moins une surface de travail, caractérisée en ce que la barre de maintien et de pression de racle (2, 2a, 23, 24) est maintenue verticalement ou approximativement verticalement mobile par coulissement ou pivotement, et en ce que la barre de racle (4, 4a, 42, 44, 46) est maintenue dans le même sens, pouvant se déplacer par coulissement dans un évidement, en forme de rainure (3), de la barre de maintien et de pression de racle.
EP92908382A 1991-03-21 1992-03-20 Dispositif a racle Expired - Lifetime EP0530349B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT636/91 1991-03-21
AT0063691A AT401894B (de) 1991-03-21 1991-03-21 Rakelvorrichtung
PCT/AT1992/000039 WO1992016308A1 (fr) 1991-03-21 1992-03-20 Racle et/ou dispositif a racle

Publications (2)

Publication Number Publication Date
EP0530349A1 true EP0530349A1 (fr) 1993-03-10
EP0530349B1 EP0530349B1 (fr) 1995-12-06

Family

ID=3495834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92908382A Expired - Lifetime EP0530349B1 (fr) 1991-03-21 1992-03-20 Dispositif a racle

Country Status (4)

Country Link
EP (1) EP0530349B1 (fr)
AT (2) AT401894B (fr)
DE (1) DE59204573D1 (fr)
WO (1) WO1992016308A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9302207U1 (de) * 1993-02-12 1994-06-09 Zimmer Johannes Vorrichtung zum breitenverteilenden Auftragen fließfähiger Substanzen
US6135025A (en) * 1994-02-12 2000-10-24 Zimmer; Johannes Process and device for cleaning an application device
DE10144600A1 (de) * 2001-09-11 2003-03-27 Voith Paper Patent Gmbh Auftragsvorrichtung
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
CN103537409B (zh) * 2013-10-25 2016-01-13 昆山无名机械有限公司 一种涂层机
CN114953595A (zh) * 2022-05-17 2022-08-30 亳州市裕同印刷包装有限公司 刮刀机构及刮楞设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE760051A (fr) * 1969-12-11 1971-05-17 Mascioni Mabetex B E U Mascion Racle d'impression sur cadre et reglage de la pression au moyend'un coussin elastique interpose
GB1313046A (en) * 1970-05-15 1973-04-11 Ichinose S Apparatus for inclusion in a screen printing machine
AT338736B (de) * 1973-02-09 1977-09-12 Zimmer Peter Rakeleinrichtung fur das behandeln ebener warenbahnen
US3930445A (en) * 1974-03-14 1976-01-06 Precision Screen Machines, Inc. Squeegee assembly for use on a screen printing machine
DE2611625B2 (de) * 1976-03-19 1979-07-12 Hoechst Ag, 6000 Frankfurt Beschichtungsvorrichtung
US4241691A (en) * 1978-08-30 1980-12-30 Monsanto Company Doctor blade holder
US4387663A (en) * 1981-10-07 1983-06-14 Beloit Corporation Blade type fountain coater metering device
DE3338323A1 (de) * 1982-11-23 1984-05-24 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum beschichten laufender materialbahnen
FI853041A0 (fi) * 1985-08-07 1985-08-07 Valmet Oy Anordning foer belaeggning av materialbana.
DE3874274D1 (de) * 1987-10-10 1992-10-08 Johannes Zimmer Auftragungsgeraet.
FR2621528A1 (fr) * 1987-10-13 1989-04-14 Mach Textiles Dispositif d'enduction pour pochoir rotatif ou a plat de machine d'impression
AT393973B (de) * 1989-12-21 1992-01-10 Johannes Zimmer Einrichtung zum beschichten von textilien und sonstigen flaechengebilden, bahnenfoermig oder in stuecken vorliegend

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9216308A1 *

Also Published As

Publication number Publication date
EP0530349B1 (fr) 1995-12-06
AT401894B (de) 1996-12-27
ATA63691A (de) 1996-05-15
ATE131086T1 (de) 1995-12-15
WO1992016308A1 (fr) 1992-10-01
DE59204573D1 (de) 1996-01-18

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