EP0423274B1 - Appareil a racle pour application de substances fluides ou pulverulentes sur des surfaces planes - Google Patents

Appareil a racle pour application de substances fluides ou pulverulentes sur des surfaces planes Download PDF

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Publication number
EP0423274B1
EP0423274B1 EP90906046A EP90906046A EP0423274B1 EP 0423274 B1 EP0423274 B1 EP 0423274B1 EP 90906046 A EP90906046 A EP 90906046A EP 90906046 A EP90906046 A EP 90906046A EP 0423274 B1 EP0423274 B1 EP 0423274B1
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EP
European Patent Office
Prior art keywords
coating
coating device
doctor blade
doctor
coating element
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
EP90906046A
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German (de)
English (en)
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EP0423274A1 (fr
Inventor
Johannes Zimmer
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Individual
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Individual
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Publication of EP0423274B1 publication Critical patent/EP0423274B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors

Definitions

  • the subject of this invention is a doctor device or doctor element for applying or for spreading or spreading flowable or powdery substances onto flat surfaces, webs or the like. in connection with or without the use of stencils, preferably in connection with magnetically effected squeegee pressure.
  • the squeegee device presented here is equipped with a squeegee element, or the like, consisting of a roller, a profile bar, a profile strip, an elastically deformable squeegee blade. can exist. It can also be a squeegee application element (squeegee).
  • the length of the doctor device or doctor element usually extends transversely to the direction of movement or running of the web or the like. and, depending on their width, can be less than one or even several meters.
  • roller squeegee which is made of steel or another magnetizable material and is pressed on by magnetic force; this is mainly because this doctor element does not require any mechanical mounting, fastening or clamping, but only loosely placed or inserted and then magnetically pressed and held or rolled in the magnetic field.
  • this device Compared to other devices that work magnetically, squeegee-pressed, this device has a disadvantage that impairs its function: the squeegee contact pressure is already so great due to the weight of the squeegee device that the magnetic contact pressure can only be used as a reinforcing force and that the setting or Applying only a small doctor pressure is therefore not possible.
  • doctor blades are still made of a support, spar, tube or the like which is constructed as rigidly as possible. exist and which are mounted at the ends, on both sides of the application surface or web or the like, fixed in height or attached to the machine frame, the most common in practice.
  • the second type which is widespread in practice, is the magnetically pressed roll doctor devices described above, or, more correctly, roll doctor elements.
  • Roller doctor elements because the magnetically pressed doctor blades are usually only loosely inserted or laid on and held magnetically.
  • the object of the invention presented herewith is to provide a doctor blade device which is mounted in a height-fixed manner or fixed to the machine frame in accordance with the conventional art with the ends of the doctor blade carrier construction, the doctor blade spar, the doctor blade tube or the like. that, however, with regard to its working function, the doctor element attached to this doctor device carrier is advantageously - compared to the previously known prior art - constructed in such a way that the bending stiffness of the tool carrier construction cannot be transferred to the doctor element, and the doctor element, acting on its own, by the The stiffness of the squeegee is unimpeded, parallel to the working edge or contact surface of the squeegee element or, if applicable, including a squeegee holding strip, which is uniform over the entire application width or squeegee length.
  • the object of this invention is essentially characterized by an auxiliary device integrated in the doctor device constructed according to the invention for the plane-parallel adjustment of the doctor element or a profile bar holding the doctor element or possibly only touching or loosely encompassing the application surface or the template or the like essentially from at least one, at least approximately centrally arranged rotary joint or rotary slide joint or possibly spherical joint, or, if the device is very long, at most two or more, or the like, arranged symmetrically or approximately symmetrically over the length of the doctor element. exists, through which or by which the doctor element or the doctor element carrying, possibly only touching, extensive, etc. profile strip is connected to the doctor device against this rotatably or displaceably mounted.
  • FIGS. 1 and 2 each show a complete cross section through a doctor device 1 constructed according to the invention.
  • the reference number 2 designates a preferably rigidly shaped doctor blade crossmember, support beam, support tube or the like. If tubular, this support bar or the like. can also be used for substance delivery, which is indicated in FIGS. 1 and 2.
  • This carrying beam, designated 2 is - which is not shown in the drawing, but is easily conceivable - attached to its two ends at most vertically.
  • This support beam 2 can also be thought of as being position-changeable in any other spatial direction, depending on the requirements, but usually no change in position during a respective operating state. Changes in location only take place for the purpose of handling, installation and removal or cleaning and replacement with other doctor blades, or changes in location to be handled in accordance with the settings are made only for the purpose of setting or changing the setting of application parameters.
  • the spatial arrangement of the doctor device can be done as desired.
  • Squeegee devices constructed in accordance with the invention are therefore not conceivably arranged in a free-standing manner, but, in addition to being in contact with the work surface, application surface, stencil, magnetic bar, magnetic roller or the like, need a positional fixation of the support beam, cross member or the like. 2, wherein it is possible in an advantageous, additionally characteristic embodiment according to the invention, or the like from changes in the position of the cross member. 2 Derive changes in the application parameters by causing changes in the angular position of the doctor element or of the profile bar touching, surrounding or holding the doctor element.
  • U-shaped support profile part 3 designates a U-shaped support profile which is fastened to the cross member support member 2 with parts 4, but also a one-piece design - ie parts 2, 3 and 4 together a support profile - is possible.
  • the length of the U-shaped support profile part 3 is shorter than the cross member support beam 2, may correspond to the application width in order to increase the transverse rigidity of the cross member 2, but may also be shorter as desired, for example only as a fork piece, or may be also two or more pieces, divided, arranged and fastened in the area of the working width.
  • part labeled 3 there is - preferably in the middle of the application area - at least one rotary or rotary slide joint or the like labeled 5.
  • rotary or rotary slide joint or the like labeled 5. whose axis is designated 6.
  • 7 denotes the part which is suspended in the part 5 or fastened to it with a rotary or, if necessary, a rotating and sliding seat connection or, as a result, also with the parts 3, 4 and 2 rotating or rotating and sliding seat movable against it, connected or held on.
  • the part 7 can either be a profile strip or a relatively narrow, preferably centrally arranged swivel arm, or it can be two or more parts which are divided over the working width and have the same cross-section with respect to FIGS.
  • a continuous profile strip is also conceivable, the length of which corresponds approximately to the working width, whereby - analogous to part 5 of the description - it is in turn possible to fasten this profile strip 7 only once in the central region, for example, to a rotary joint 5, for example, or to two rotary slide joints, for example, which are arranged approximately in the area of the two outer thirds or quarters of the profile strip length 7. It is also conceivable to combine a centrally arranged, for example swivel joint 5, with two swivel and sliding joints arranged in the end region.
  • FIG. 7 A simple example of a rotary and sliding joint connection of the type described above is shown in FIG. It can be seen here that the part 7 is provided with a bore which is widened as a longitudinal slot instead of having a bore which fits centrally on the swivel joint 5, as a result of which the part 7 in FIG. 3 acquires an additional relative mobility, indicated by an arrow, relative to the part 3.
  • this embodiment is also suitable for the function of the pivoting or sliding mobility of the profile strip or of the parts or of the part 7 in relation to the doctor device 1.
  • a leg of a hinge joint 8 - it can also be several hinge joints of shorter overall length - fastened.
  • a profile bar forming or holding the doctor element or touching or possibly encompassing doctor element, profile bar is fastened, the length of which is preferably equal to the working width. 4 shows a variant of this, in which the hinge joint 8 is not, as shown in FIGS. 1 and 2, shaped as a swivel hinge but as a flexible joint or flexible joint strip.
  • a bar 10 made of one or more parts and made of magnetizable material, is fastened to the bar element holding bar 9, by means of which the bar element 120 is magnetically pressed.
  • the magnetisable profile strip 10 is embedded in the profile strip 9 — one part or more parts — and has a smaller cross section than in FIG. 1.
  • a doctor blade element 121 made of a magnetizable round profile is used, so that in this FIG. 2 variant of a doctoring device according to the invention the magnetizable profile 10 does not have to press on the doctor element 121, but only that doctor blade element surrounding squeegee profile strip 9, counteracting any substance back pressure, has to hold against the squeegee element 121.
  • Figure 2 is in addition to the above-described magnetizable slide-in profile 10 - which can also be permanently magnetized at most - a further magnetizable, but preferably permanently magnetically designed insertion strip 11 is shown.
  • This magnetizable or permanently magnetic insertion bar 11 - can also be insertion parts of the same cross-section, as shown - can be used to reinforce the magnetic contact pressure of the doctor element profile strip 9 and also around the doctor blade element 121 when the doctoring device is out of operation and off the track - or work surface or stencil is lifted off, hold on to the surrounding or contact surfaces of the squeegee element profile strip 9 closest to the magnetizable parts 11 or at most 10 and / or 11.
  • this embodiment shown in FIG. 2 of a squeegee device which is two-part for its function (operating state) is converted into a squeegee device which is one-piece for the idle state or for handling purposes.
  • FIG. 3 shows the subject matter of the invention in connection with a slot doctor element, consisting of two doctor element profile strips 122 and 123, which are connected to one another by plug connections.
  • the device parts 3 and 7 connecting sliding joint or rotary and sliding joint parts 5 according to the invention are, depending on the working width or length of such a device, either arranged only once in the middle or twice in the end regions or three to five times in the case of very large working widths or overall lengths arranged the total length distributed to think.
  • FIG. 4 it should also be said that the magnetizable profile strip 10, which is made in one or more parts, is inserted loosely and accordingly also interchangeably into the doctor element profile strip 9.
  • 13 in FIG. 1 is a fastening clamping strip for the squeegee strip 12, the arrow 14 the direction of movement, 15 a conveyor belt with a web lying thereon, 16 in FIGS. 1, 2 and 3 a circular template and 17 and 18 in Fig. 1 to 3 called a so-called magnetic bar.
  • FIG. 4 denotes a magnetic roller and 20 denotes the web to be coated by the doctor device according to the invention.
  • the arrows labeled 21 in FIGS. 1, 2 and 4 denote the preferred position-changeable direction for the device setting.
  • the change in the position of the squeegee device according to the invention in its preferably rigid with 2 and 3 or possibly also 7 device parts, which are brought about by the end fastenings for the squeegee device spar 2, which are not shown in this direction and can be moved, is considered to be an important one that extends the main idea of the invention
  • Functional advantage a quantity control of the application performance caused by the change in the angular position of the doctor element profile strip or the substance accumulation area located between it and the application surface or template as a function of this change in location.
  • This change in the angular position which is important for the control of the application quantity output, is represented by the arrow 22 in FIG.
  • the same as previously explained, also applies to the embodiment variants in FIGS. 1 and 4, but not for FIG. 3.
  • a further, particularly advantageous embodiment, or a functional advantage that extends the main idea of the invention can be achieved by the fact that it has now become possible for the first time due to the rotary or sliding joint connection integrated into a doctor device constructed according to the invention in accordance with the main idea of the invention
  • the cross member or support beam can be constructed rigidly - and thus exposed to the inevitable dangers of bending and bending - without exposing the squeegee element to these bending or bending risks with the disadvantageous consequences arising for the application process.
  • the present invention makes it possible to manufacture any, i.e., cross-sectionally shaped doctor blades suitable for the respective application requirement, regardless of the other doctor blade construction parts, either in a manner that is inherently rigid due to inherent inherent strength, or to a desirable extent with flexible or slackness.
  • doctor blades manufactured according to the invention enables high-quality application processes in larger working widths and with greater economy than before.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Lubricants (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Accessories For Mixers (AREA)
  • Detergent Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Claims (19)

  1. Dispositif d'enduction à râcle pour enduire ou étaler des substances fluides ou pulvérulentes adaptées sur des surfaces (15) planes, des bandes ou analogues en utilisant des pochoirs (16) ou non, de préférence en liaison avec une pression de la râcle appliquée par des moyens magnétiques, caractérisé par un dispositif auxiliaire intégré dans le dispositif d'enduction à râcle (1) pour le réglage plan-parallèle à la surface à enduire, au pochoir (16) ou analogue, d'une râcle - ou d'un élément profilé (9) qui supporte la râcle ou tout au moins est seulement en contact avec celle-ci ou l'entoure librement -, lequel dispositif auxiliaire est essentiellement composé d'au moins d'une articulation tournante ou d'une articulation tournante-coulissante ou encore d'une articulation sphérique (5) qui est disposée au moins approximativement au milieu ou, lorsque la longueur du dispositif est très importante, de deux ou plusieurs articulations tournantes-coulissantes ou analogues disposées symétriquement ou sensiblement symétriquement le long de la râcle (12, 121), grâce à laquelle - ou grâce auxquelles - la râcle ou l'élément (9) portant, touchant, entourant, etc, la râcle est monté sur le dispositif d'enduction avec possibilité de rotation ou de déplacement transversal par rapport à celui-ci.
  2. Dispositif d'enduction à râcle selon la revendication 1, caractérisé par le fait qu'outre le dispositif auxiliaire pour le réglage plan-parallèle, une articulation à charnière (8) ou analogue est intégrée dans le dispositif d'enduction à râcle (1), laquelle articulation (8), par changement de position du dispositif d'enduction à râcle (1) ou du support du dispositif d'enduction, provoque une modification de la position angulaire de la râcle ou de l'élément profilé (9) par rapport au plan d'enduction, au pochoir (16) ou analogue.
  3. Dispositif d'enduction à râcle selon la revendication 1 ou 2, caractérisé par le fait que l'élément profilé peut être magnétisé en partie ou en totalité ou est agencé de manière à être magnétique ou est pourvu d'éléments de ce type qui peuvent être fixés, noyés, insérés, glissés ou appliqués sur ou dans ledit élément profilé.
  4. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que la râcle est une râcle à lame.
  5. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que la râcle est une râcle à rouleau.
  6. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que la râcle est fixée avec possibilité de remplacement sur l'élément profilé.
  7. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que la règle profilée est agencée avec un bord de travail de forme adaptée.
  8. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que l'élément profilé est en contact avec une râcle à rouleau et constitue avec celle-ci un corps en deux parties monté libre pour la fonction d'enduction, lequel corps exerce une action homogène et simultanée.
  9. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que, hors fonctionnement, la râcle à rouleau est retenue par, sur ou dans l'élément profilé par des moyens magnétiques.
  10. Dispositif d'enduction à râcle ou râcle selon la revendication 2, caractérisé par le fait que l'articulation à charnière est agencée sous forme de joint articulé de flexion.
  11. Dispositif d'enduction à râcle ou râcle selon la revendication 10, caractérisé par le fait que la partie agencée sous forme de joint articulé de flexion est intégrée dans la règle profilée ou fait partie de celle-ci.
  12. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que la râcle est agencée sous forme de râcle à fente.
  13. Dispositif d'enduction à râcle ou râcle selon la revendication 12, caractérisé par le fait que la râcle agencée sous forme de râcle à fente est composée de deux règles qui sont reliées entre elles et coopèrent.
  14. Dispositif d'enduction à râcle ou râcle selon la revendication 1 et éventuellement selon une ou plusieurs des revendications précédentes, caractérisé par le fait que le dispositif d'enduction à râcle ou les râcles coopère(ent) avec un dispositif de production de forces magnétiques qui, éventuellement, est agencé sous forme de support de travail ou de support de la bande ou de la surface à enduire.
  15. Dispositif d'enduction à râcle selon la revendication 3, caractérisé par le fait que les éléments magnétisables ou à action magnétique sont réalisés sous forme de règles profilées monoblocs ou séparées ou sont disposés avec une forme quelconque.
  16. Dispositif d'enduction à râcle selon la revendication 2, caractérisé par le fait que le changement de position du dispositif d'enduction est obtenue par la poutre porteuse ou transversale du dispositif d'enduction et de préférence au moyen de supports du dispositif d'enduction qui agissent aux deux extrémités de ladite poutre porteuse, transversale ou analogue.
  17. Dispositif d'enduction à râcle ou râcle selon la revendication 2, caractérisé par le fait que le changement de position du dispositif d'enduction par la poutre porteuse ou transversale du dispositif d'enduction n'a lieu que d'un côté, c'est-à-dire avec une inclinaison variable des éléments du dispositif d'enduction supportant la râcle.
  18. Dispositif d'enduction à râcle ou râcleselon l'une des revendications précédentes, caractérisé par le fait qu'une alimentation en substances est intégrée dans le dispositif d'enduction .
  19. Dispositif d'enduction à râcle selon l'une des revendications précédentes, caractérisé par le fait que le dispositif d'enduction à râcle ou la râcle est fixe et la surface à enduire, le poste ou la bande se déplace par rapport à celle-ci.
EP90906046A 1989-04-18 1990-04-17 Appareil a racle pour application de substances fluides ou pulverulentes sur des surfaces planes Expired - Lifetime EP0423274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT924/89 1989-04-18
AT0092489A AT399832B (de) 1989-04-18 1989-04-18 Rakelgerät mit einem das rakelgerät haltenden quer- oder tragholm zum auftragen bzw. zum auf- oder einstreichen fliessfähiger oder auch pulverförmiger substanzen auf ebene flächen, bahnen oder dgl.

Publications (2)

Publication Number Publication Date
EP0423274A1 EP0423274A1 (fr) 1991-04-24
EP0423274B1 true EP0423274B1 (fr) 1993-11-03

Family

ID=3502975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906046A Expired - Lifetime EP0423274B1 (fr) 1989-04-18 1990-04-17 Appareil a racle pour application de substances fluides ou pulverulentes sur des surfaces planes

Country Status (7)

Country Link
EP (1) EP0423274B1 (fr)
JP (1) JPH03502909A (fr)
AT (2) AT399832B (fr)
AU (1) AU5442590A (fr)
BR (1) BR9006721A (fr)
DE (1) DE59003336D1 (fr)
WO (1) WO1990012687A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19736563C1 (de) * 1997-08-22 1998-10-22 Trans Textil Gmbh Vorrichtung zum Auftragen von Schmelzkleber auf Bahnen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187718A (en) * 1962-05-28 1965-06-08 Black Clawson Co Flexible doctor blade coating apparatus
US3302610A (en) * 1963-10-10 1967-02-07 Beloit Corp Inverted trailing blade
AT296927B (de) * 1967-01-31 1972-03-10 Peter Zimmer Vorrichtung zum Auftragen von flüssigen oder pastösen Massen
IT999822B (it) * 1973-11-26 1976-03-10 Belcit Italia Spa Dispositivo per la regolazione dello spessore dello strato di sospensione di patinatura deposto su un nastro continuo di carta in una macchina patinatrice
AT328402B (de) * 1974-04-30 1976-03-25 Zimmer Peter Einrichtung zum behandeln von warenbahnen auf druckmaschinen
GB1561858A (en) * 1977-02-07 1980-03-05 Vickerys Ltd Doctors for paper-making machines
DE2825907B2 (de) * 1978-06-13 1981-02-26 Jagenberg-Werke Ag, 4000 Duesseldorf Vorrichtung zum Aufbringen einer Beschichtung auf eine Materialbahn
AT376399B (de) * 1981-12-07 1984-11-12 Zimmer Johannes Rakelvorrichtung
ATE86546T1 (de) * 1987-10-10 1993-03-15 Johannes Zimmer Rakelgeraet.

Also Published As

Publication number Publication date
AU5442590A (en) 1990-11-16
ATE96734T1 (de) 1993-11-15
WO1990012687A1 (fr) 1990-11-01
DE59003336D1 (de) 1993-12-09
ATA92489A (de) 1994-12-15
JPH03502909A (ja) 1991-07-04
EP0423274A1 (fr) 1991-04-24
AT399832B (de) 1995-07-25
BR9006721A (pt) 1991-08-06

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