EP0463142B1 - Racloir et dispositif de raclage a pression magnetique, particulierement avec cylindre perfore - Google Patents

Racloir et dispositif de raclage a pression magnetique, particulierement avec cylindre perfore Download PDF

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Publication number
EP0463142B1
EP0463142B1 EP91902322A EP91902322A EP0463142B1 EP 0463142 B1 EP0463142 B1 EP 0463142B1 EP 91902322 A EP91902322 A EP 91902322A EP 91902322 A EP91902322 A EP 91902322A EP 0463142 B1 EP0463142 B1 EP 0463142B1
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EP
European Patent Office
Prior art keywords
doctor blade
bar
doctor
magnetically
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91902322A
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German (de)
English (en)
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EP0463142A1 (fr
Inventor
Johannes Zimmer
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Individual
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Individual
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Priority claimed from AT9290A external-priority patent/AT400115B/de
Priority claimed from AT18190A external-priority patent/AT393465B/de
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Publication of EP0463142A1 publication Critical patent/EP0463142A1/fr
Application granted granted Critical
Publication of EP0463142B1 publication Critical patent/EP0463142B1/fr
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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
    • B41F15/426—Inking units comprising squeegees or doctors the squeegees or doctors being magnetically attracted

Definitions

  • the squeegee and squeegee device herewith presented as an invention with a squeegee profile strip and with a magnetic device, suitable for applying flowable substances to sheet-like, in particular sheet-like substrates, optionally in connection with stencils, in particular screen cylinders, differs from the prior art as follows.
  • Doctor devices that operate with magnetically applied doctor pressure are known. See e.g. EP-A-0 311 743, EP-A-0 311 728 and WO 89/03259.
  • Doctor blade profiles which are either in one piece and made of magnetizable material or multi-part, i.e. several parts, of which at least one part can be magnetized, are also known: either as components of doctor devices or, as a special case, e.g. as a magnetizable round bar (magnetic roller doctor) which can be used alone as a doctor device.
  • doctor blade device which consists of a doctor blade profile strip or at most as a double doctor blade, consists of two such doctor blade profile strips and has ends at its ends by means of journal pins in a roller guide, ie in each case a leadership role is deposited.
  • the available magnetic force acts exclusively or primarily as a doctor pressure and, in a second function, also determines the location.
  • This position-determining effect function is derived from the magnetically effected main function - the squeegee contact pressure - without this or this resulting in a reduction in the contact pressure.
  • doctor pressure is weakened by two factors, firstly, that the weight of the doctor profile bar largely rests on the side roller guides and secondly, that also by the magnetic device generated in the magnetizable parts of the doctor blade bar, magnetic force effect acts only in part as a doctor pressure, while the other part, like the dead weight, acts on the lateral roller guide through the lateral journal bearings and thus as a doctor pressure, ie as an actual worker, the application process is lost.
  • magnetically pressed doctor blade devices In contrast to the magnetically pressed doctor blade roller, magnetically pressed doctor blade devices of the type described above have not proven themselves in practice.
  • a disadvantage or deficiency of the doctor blade application technology that is disruptive for some operating modes is that the application quantity is determined by the doctor blade diameter and changes in the application quantity output are therefore only possible by changing the roll diameter, ie replacing a doctor roll of diameter A with a doctor roll of diameter B, and thus interrupting operation or production.
  • Known prior art also includes such doctor blade devices with a profiled strip which is arranged in the region in front of the doctor blade and is fastened to the doctor blade device and which is either movable on its own, as an element or by the doctor blade device, i.e. is designed to be movable. its location in relation to the application zone is changeable.
  • auxiliary or additional devices of this type an additional quantity control can be effected within certain limits even during operation without interrupting production.
  • the doctor device according to the invention - it can be a roller or a doctor blade device - differs in an advantageous manner in that a roller or doctor blade or a profile strip with a doctor or coating element is designed and arranged in this way is that the entire available magnetically induced force is supplied to the squeegee in whole or at least almost entirely as squeegee contact pressure and remains available as such that the position of the squeegee is determined by the position of the magnet device as well as by the formal design and strength (intensity ) of the magnetic field is determined and that the squeegee has a freedom of movement which is limited or made possible by device parts or possibly by a template itself, within which the squeegee magnetically effects its optimal location for the respective operating state and possibly influenced by the working speed and by friction value and dynamic pressure parameters.
  • a further advantageous embodiment of this squeegee technology or device according to the invention is that the doctor blade described above is even connected to the doctor device is that the squeegee can be pivoted about a longitudinal axis of the squeegee, for example around the contact edge or contact curvature, without restricting its above-described positional determination possibility, whereby a change in the application quantity can be effected on the way via a change in the dynamic pressure in the application substance.
  • doctor blade profile is designed as a doctor blade profile bar
  • the device parts which cause this swiveling or axial rotation of the doctor blade strip can be designed such that the doctor blade strip also enables the mobility caused by changing the magnetic contact pressure, acting approximately vertically to the application plane, without magnetically induced forces in derive the device.
  • This property of the device according to the invention is particularly important and advantageous because the known prior art, by means of magnetic force-coated doctor blade devices, determine the position of the doctor blade strips by mechanical means, so that the magnetic forces acting on the doctor blade bar tensions, deformations and Can cause vibrations that interfere with the application process.
  • Doctor blade profile strips according to the invention both roller blades and doctor blade strips, have a profiled, angular or rounded area lying against the application surface or template and consist, at least in part of their longitudinal extent, of magnetizable material or, if appropriate, of magnetic devices.
  • the axis about which the squeegee can be pivoted in or on the squeegee device is an axis of construction which is only produced by magnetically, to a certain extent magnetically imaginary.
  • the squeegee or squeegee device can be changed by means of different aids in terms of its location or its spatial arrangement relative to the application area (to the squeegee contact zone): vertical displacement, horizontal displacement, oblique displacement, change in the position of a circular arc or, for example, rotation of the doctor device (this does not mean the rotation of the doctor profile strip) about a device axis, such as, for example, the axis of the substance supply tube to which the support body of the doctor device is attached.
  • the control of the pivoting or axial rotation of the squeegee can also be done by a so-called link control or by a Hekel-joint connection: e.g. by means of a lever arm or a connecting link with a swivel joint at each end of the link or the lever-like connecting part.
  • the squeegee strip is designed as a roller squeegee strip
  • one and the same squeegee device can be equipped with differently shaped strips or with squeegee rollers of different diameters, wherein the strips themselves can also be shaped differently.
  • doctor blade profile strip is a doctor blade strip, this can also be shaped differently and can be equipped or shaped with differently designed or shaped doctor blade elements.
  • roller doctor blades which are important in terms of their use and are advantageous for the different operating requirements, are that the bar can be provided with a slide-bearing-shaped recess in which a doctor roller is held around about two thirds of its circumferential surface area, viewed in the direction of movement, before the roller located edge, which delimits this slide bearing-shaped recess, very close to the application plane or template. This distance can be reduced to 1 mm - and even less than this.
  • the doctor blade roller inserted in the roller doctor blade strip can advantageously be shaped with a structured surface - preventing the formation of substance drops on the rear edge of the slide bearing as seen in the direction of movement.
  • the magnetic force is used as a doctor contact pressure, occasionally also as a subordinate assistant for determining the position, but always in conjunction with mechanical means for determining the position.
  • the invention presented herewith for the first time treads the path of assigning a second main working function to the magnetic force in addition to the function of squeegee pressing; the magnetic force or the device generating the magnetic force is assigned the work function of fixing the position alone without the use of mechanical aids.
  • the axial position of a magnetically pressed squeegee with a roller squeegee or scraper bar is determined exclusively by magnetic force.
  • the device according to the invention is characterized in that another, preferably non-magnetizable or only partially magnetizable part is assigned to this exclusively magnetically held doctor element, which, when the doctor element is a roller, about its axis or otherwise about its contact edge and is pivotable together with this.
  • the connecting parts constructed according to the invention which connect the magnetically held working parts with parts mechanically fastened or resting on the machine, have only the control function during the operating state for determining the angular position of the squeegee profile bar which can be pivoted around the squeegee element or together with it.
  • these connecting parts which control the angular position by sliding contact, are also assigned a holding function which does not act in the operating state but only outside the operating state.
  • This auxiliary function of holding, which cannot or cannot be set in the operating state, has the effect that the entire application device - in which the substance supply is preferably also integrated - can be handled in one piece. This simplifies the installation and removal of the device, enables the squeegee element to be brought into the approximately suitable position for the desired magnetic force-induced operating state during installation and also enables the squeegee device to be lifted off during a brief interruption in operation and magnetic field switch-off.
  • FIG. 1 to 4 illustrate the magnetic self-positioning according to the invention in some design variants, with several types of doctor elements - profile doctor blade 4, elastic blade 28, doctor roller 30 and in addition to the doctor roller 30 in FIG. 4 magnetizable Parts 10 - are shown in the profile bar 2.
  • a strip-shaped doctor blade or doctor blade device is provided with a doctor blade profile strip or doctor element holding strip 2.
  • the doctor element 4 made of a pressure and bending elastic profile body is inserted into the doctor element holding recess 3.
  • the application substance 5 rests on the storage surface 6 of the profile bar 2 and on the storage surface 7 of the doctor element 4.
  • the storage surface 6 of the squeegee strip 2 is curved here.
  • the doctor blade 1 also carries a magnetizable mass 10, which can also be in several parts.
  • the squeegee strip 2 has an extension 15 which rests in the area 11 on the area 12 of a support part 13, the support part 13 being fixed laterally.
  • the profile strip 2 can move back and forth in the direction of the arrow 16, specifically in or against the direction of movement 18 of the application surface 9 or in or against the direction of movement 20 of a template 19.
  • FIG. 2 corresponds to that of FIG. 1, but here a support 51 of the squeegee strip 2 lies directly in the area 21 on the inner wall of the screen stencil 19.
  • FIG. 3 is derived from FIG. 2 and additionally has a boundary wall which is connected to the squeegee strip 2 and into which a flexible strip 28 is inserted, which abuts the screen cylinder 19 or the application surface 9. This creates a trough in the upper area and an application gap in the lower area.
  • FIG. 4 shows a device similar to FIG. 3, but in one piece, with a round rod as a doctor element, which can optionally be arranged in a rotating or rotationally fixed manner, with a similar contact area being provided symmetrically in addition to the contact area 21. This counteracts the risk of the device possibly tipping over to one of the two sides.
  • an application slot 50 is formed here between the doctor element 28 and the roller 30, through which the application substance 5 supplied by means of a passage 52 can exit onto the application surface 9.
  • FIG. 5 and 6 show different positions of a device according to the invention according to FIG. 1, specifically with different working positions for different application services, the different setting being effected by actuating a device according to or similar to FIG. 8.
  • extension 15 is directed away from the screen template 19 and the adjacent areas are not shown.
  • the support part 13 is designed here as a head 22 and can be moved in the direction of the arrow 23.
  • the support part 13 engages in a fixed counterpart 24 which is attached to a plate 25.
  • the squeegee strip 2 is in one piece with a profile edge 26 and there is the possibility of a magnetizable mass 27 with e.g. circular cross section to use if the squeegee 2 is made of non-magnetizable material.
  • doctor element 28 is thin and flexible.
  • the squeegee bar 2 carries a further profile bar 29 and a magnetizable mass 10, if neither the profile bar 29 nor the squeegee bar 2 are made of magnetizable material or, if appropriate, to reinforce the magnetically caused pressure .
  • the profile strip 29 is replaced by a roller 30 which is gripped in a slide-bearing-shaped recess 31 which encompasses half of it.
  • FIG. 13 A similar embodiment is also shown in FIG. 13.
  • the profile strip 2 rests on a roller 30 on the application surface 9 or on the inside of the stencil 19.
  • the squeegee strip 2 is shaped similarly to FIG. 7, but has a projection 32 directed against the direction of movement 20, due to the weight of which the squeegee strip 2 forward, ie can tip against the direction of movement.
  • a contact area 11 instead of a contact area 11 according to FIG. 8, there are two contact areas 33 and 34, each with an adjusting device 35 and 36.
  • FIG. 14 A further development is shown in FIG. 14, where the squeegee strip 2 consists of magnetizable material and the adjustment devices 37, 38 can be moved on a rod 39, or, as shown in broken lines, are connected to form a one-piece displacement device 40.
  • an auxiliary device 41 can be rotated about an axle pin 42 in the direction of arrow 43 and is held on a contact and control profile 45 via a web 44 which is guided in a guide 46 intervenes.
  • the possible swivel range of the squeegee results from the circular segment lines 47, 48, an approximation or overlapping range of the two intermeshing swivel movement or contact and control elements being provided.
  • the pivoting movement is derived from an actuating device 49 that is moved perpendicularly or approximately perpendicularly to the application plane, and the contact and control elements are designed essentially as in FIG.
  • a variant is shown in broken lines in FIG. 3, in which the device is shaped such that the extension 15 engages in a guide 46, as in FIG. 16.
  • FIG.17 Another embodiment of the invention is shown in Fig.17.
  • a material web 9, onto which a substance is to be applied, is guided over a table 66, in which a magnet device 8 is contained.
  • a doctor blade profile strip 2 is provided, which is pivotally connected by means of a joint 65 to a shoulder, a holding arm, a plurality of holding arms or to a continuous strip 64.
  • the holding arm or the bar 64 is connected to an at least partially cylindrically shaped part of a support bar 60 which is rotatably mounted in a shell-shaped slide bearing 63.
  • the slide bearing is connected via an arm 61 to an actuating device which has a threaded rod 62 on which nuts 67 can be moved, i.e. when the nuts 67 are rotated, the bearing shell 63 is adjusted and thus the altitude and subsequently the angle of attack of the squeegee strip 2 are changed.
  • the squeegee can move into the position shown in dashed lines.
  • the doctor bar 2 and / or the doctor element, which is shown here as a round rod consists at least partially of magnetizable material.
  • the magnetizable material can also have a different shape or the entire squeegee can also consist of magnetizable material.
  • a flexible doctor blade can be fastened and the magnetizable round rod can also not be rotatably fastened in a recess in the doctor bar, e.g. be glued in.
  • the invention succeeds in that the entire, respectively available, magnetically induced force is supplied to the squeegee strip in whole or at least approximately as a squeegee contact force and remains available as such that the position of the squeegee is determined by the position of the magnet device and also by the formal Design and strength of the magnetic field is determined, and that the squeegee itself can determine its location depending on the working speed and possibly by the coefficient of friction and dynamic pressure parameters.
  • the magnetic force is not only used for pressing and determining the location of a conventional doctor roller, but also determines the location of a doctor blade and in the operating state, i.e. with the magnet system switched on, holds in working position.
  • a squeegee which has a squeegee bar and a squeegee element, therefore lies on its own and does the application work (only magnetically held in place) (Fig. 1).
  • a squeegee In connection with circular stencils it is possible to design a squeegee in such a way that part of the squeegee is extended to the rear in the direction of movement and rests against the inner wall of the screen cylinder with a very low support weight (Fig. 2). It is also possible to shape the ledge profile in the direction away from the application surface from the inner wall of the screen cylinder or to provide it with at least one attachment part shaped in this direction, to which the above-described function of contact or contact is assigned, the contact counterpart being arbitrary inside or outside of the application area can be arranged (Fig. 7).
  • the squeegee according to the invention can also be adjustable (ie axially rotatable) in its angular position or the support can be formed with an auxiliary device for adjustment (FIG. 8).
  • the support can be formed with an auxiliary device for adjustment (FIG. 8).
  • FOG. 8 auxiliary device for adjustment
  • Here can be controlled by different congestion angle sizes that the application quantity output (Fig. 5 and 6).
  • the location can vary depending on the operating state (web or template peripheral speed, magnitude of the magnetic force, viscosity and amount of the substance to be applied and the angular position set).
  • the previous prior art disadvantage of the occurrence of unpredictable and uncontrollable tensions for the different interaction of magnetic and mechanical position determining forces and their function-impairing and quality-impairing effects, such as bending, uneven application results and signs of wear, is avoided.
  • the following squeegee element variants are thus possible: a strip which simultaneously forms the squeegee element (FIG. 9), a thin, resiliently squeegee blade (FIG. 10), a pressure-resilient and resilient squeegee profile strip, which can be shaped differently (FIGS.
  • a thin profile strip or a profile bar which can be hard or pressure-elastic (Fig.11), the cross section of the profile bar element can also be circular (Fig.12), the profile bar with a circular cross section can be more than 180 ° of its lateral surface, slidably held and thus designed as a rotating roller, the bar or parts thereof or also inserted into or attached to the bar parts can consist of magnetizable material.
  • a contact of the squeegee or the squeegee bar which limits in both directions of rotation or swiveling can be combined with correspondingly shaped, auxiliary devices that expand the scope of the invention are used to control the axial rotation or pivoting and adjustment of the angular position of the storage surface against the application area and thus to control the application quantity effect (for example FIGS. 9, 13, 15, 16). Control is also possible by moving the abutting counterparts in parallel or in an arc (FIGS. 13, 14, 15, 9 and 16).
  • the contact parts can execute a circular movement in such a way that the two circular pivoting areas form an interlocking overlapping area (Fig. 15). However, the contact parts can also be designed and arranged in such a way that the rotary or pivoting movement is derived from an actuating movement running perpendicularly or approximately perpendicularly to the application plane (FIG. 16).
  • the handling of the doctor device according to the invention is carried out in practice so that the optimal location of the doctor blade 2 is determined by the magnetic force, ie that the doctor blade 2 is adjusted to the magnetic field, is adjusted to the optimal position for the magnetic field and then by means of a mechanical Auxiliary device, such as Clamping, this angular position is fixed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Liquid Crystal (AREA)
  • Paper (AREA)

Claims (21)

  1. Racle appliquée par des moyens magnétiques avec un angle préréglé, c'est-à-dire prédéterminé par construction ou pouvant être réglé par des organes correspondants de l'installation, au point d'application, notamment pour impressions au pochoir rotatif (cylindre perforé), laquelle racle comprend un support de racle et un élément racleur monté dans ou sur le support de racle qui selon le cas peut être un bord d'enduction, une lame docteur, une règle d'enduction profilée, une barre d'enduction profilée ou un rouleau racleur et peut être formée dans certains cas de deux supports de racle de ce type, par exemple en tant que racle dite à fente, au moins un des éléments de la racle (c'est-à-dire le support de racle ou l'élément racleur étant réalisé en totalité ou en partie en un matériau magnétisable et produisant la force d'application de la racle en liaison avec un dispositif de génération d'une force magnétique, caractérisé par le fait que la racle composée d'au moins un support de racle et au moins un élément de travail ou de contact et d'étanchéité repose librement et avec possibilité de déplacement sur le pochoir, sur le cylindre perforé ou le surface d'enduction et est pressé par des forces magnétiques et par le fait que la position géographique de la racle dans le pochoir ou sur la surface d'enduction en fonctionnement est déterminée par action de forces magnétiques et donc par le dispositif, c'est-à-dire par la position géographique du dispositif produisant le champ magnétique.
  2. Racle appliquée par des moyens magnétiques selon la revendication 1, caractérisée par le fait que la position géographique de la racle occupée de manière automatique par l'action de forces magnétiques peut être fixée en outre par des moyens auxiliaires mécaniques d'un système de racle, tels que par exemple des butées ou des moyens de blocage, de telle sorte que par exemple, lorsque le champ magnétique est coupé, c'est-à-dire en dehors de l'état de fonctionnement, la position réglée par la force magnétique soit conservée et ainsi ne soit pas cherchée de nouveau lors du rétablissement du champ magnétique, c'est-à-dire ne doive pas de nouveau être réglée magnétiquement.
  3. Racle ou système de racle appliquée par des moyens magnétiques selon revendication 1 et/ou 2, caractérisée par le fait que la racle (support de racle), tout en conservant la position géographique de réglage imposée par la force magnétique et éventuellement en tenant compte d'une correction automatique de la position géographique, c'est-à-dire provoquée par la force magnétique et le mode de fonctionnement, peut pivoter angulairement dans la direction axiale, c'est-à-dire autour d'un axe parallèle à la racle (support de racle, élément racleur) au moyen d'organes auxiliaires mécaniques appartenant à l'installation et par le fait que le réglage et la conservation d'une position angulaire réglée de la racle sont obtenus par un agencement de construction des organes de réglage de la position angulaire du système de racle tel que, dans toute position de pivotement, la racle reste dans la position optimale choisie de manière automatique par des moyens magnétiques, c'est-à-dire par force magnétique, dans l'état de fonctionnement concerné.
  4. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications 1 à 3, caractérisée par le fait que le support de racle (2) est pourvu d'un prolongement (15) qui est en contact avec un organe d'appui (13) réglable en hauteur qui coopère avec une pièce conjuguée (24) rigide réglable en hauteur.
  5. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le support de racle (2) est pourvu d'un prolongement (15) auquel est associé de chaque côté une butée (35, 36; 37, 38) et par le fait que le support de racle (2) peut pivoter autour d'un axe (30) parallèle au pochoir ou à la bande de matériau.
  6. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait qu'une extrémité du support de racle forme une fourchette ou coulisse (46) dans laquelle pénètre un bras (44) pourvu d'un profil de commande (45) et par le fait que le bras (44) peut pivoter autour d'un axe (42).
  7. Racle ou système de racle appliquée appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait qu'un dispositif de réglage (49) réglable en hauteur présente une ouverture (46) en forme de fourchette dans laquelle pénètre un prolongement du support de racle (2) pourvu d'un profilé de commande (45).
  8. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le dispositif de réglage de la position angulaire de la racle ou du support de racle (2) est lié par une articulation à pivot ou analogue (65) et un bras de levier (64) à une traverse (60) qui est montée pivotante dans un support (63) et dont la position géographique peut être modifiée.
  9. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le dispositif de réglage et de positionnement angulaire qui maintient la position géographique de la racle et la possibilité de positionnement automatique magnétique est agencé avec deux axes de pivotement parallèles entre eux.
  10. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait qu'il est prévu en outre un dispositif auxiliaire supplémentaire qui peut être utilisé en cas de besoin et est destiné à bloquer la racle (support de racle) dans une position pivotée déterminée.
  11. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que la racle est réglée et maintenue dans ses deux paramètres de réglage, c'est-à-dire dans son réglage en position géographique et dans son réglage en position angulaire, d'une part par la force magnétique exercée en état de fonctionnement sur les éléments de racle magnétisables et d'autre part par des moyens auxiliaires ou des parties de dispositif à action mécanique.
  12. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que deux supports de racle avec chacun un élément racleur monté dans ou sur celui-ci liés entre eux ou réalisés d'une pièce forment une racle dite à fente, les supports de racle ou les deux éléments racleurs, dans une fonction secondaire supplémentaire étant agencés et utilisés comme règle d'étanchéité.
  13. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que la position gégraphique du support de racle peut être modifiée en agissant sur le réglage de la position géographique ou sur la force magnétique du dispositif magnétique.
  14. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le support de racle est appliqué avec possibilité de flexion sur le pochoir rotatif ou la surface d'enduction.
  15. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le support de racle repose librement sur le pochoir ou la surface d'enduction et une surface de retenue de forme quelconque, éventuellement agencée comme rouleau est disposée en avant de la zone d'application.
  16. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que le support de racle, à une extrémité ou à ses deux extrémités, est monté en dehors de la zone d'enduction.
  17. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait que l'axe de pivotement du support de racle est déterminé magnétiquement.
  18. Racle ou système de racle appliquée par des moyens magnétiques selon l'une des revendications précédentes, caractérisée par le fait qu'il est prévu pour le mouvement de rotation ou de pivotement de la règle profilée un dispositif de réglage disposé perpendiculairement au plan d'enduction.
  19. Racle ou système de racle appliquée par une force magnétiques de préférence pour impression au pochoir rotatif comportant un support de racle qui peut pivoter autour d'un axe parallèle au pochoir rotatif ou à une bande de matériau, caractérisée par le fait qu'une traverse support (60) repose dans un palier lisse (63) en forme de coquille dont la position peut être modifiée et porte un talon (64) qui est lié par une articulation (65) au support de racle (2), lequel support de racle comprend un élément (39) éventuellement partiellement en matériau magnétisable et par le fait que la position géographique du support de racle (2) est déterminée par un dispositif magnétique (8) et est influencée éventuellement par le pochoir rotatif (19), par son déplacement et par la substance à appliquer, par le fait que le support de racle (2), en fonctionnement peut être tenu par le dispositif magnétique sans blocage de la traverse support (60) dans son palier lisse et par le fait que le support de racle (2) est monté avec possibilité de pivotement sur l'axe qui est tenu en position par le dispositif magnétique ou la force magnétique produite par le dispositif magnétique (8), le position angulaire (la rotation autour de l'axe mesurable en degrés) étant réglée par un dispositif auxiliaire (61, 62) mécanique de modification de la position du palier lisse.
  20. Dispositif selon la revendication 19, caractérisé par le fait que la traverse support (60) peut être déplacée par rapport à la zone d'application de la racle.
  21. Dispositif selon la revendication 19, caractérisé par le fait que l'articulation est agencée sous forme d'articulation sphérique ou d'articulation à pivot double.
EP91902322A 1990-01-17 1991-01-16 Racloir et dispositif de raclage a pression magnetique, particulierement avec cylindre perfore Expired - Lifetime EP0463142B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AT9290A AT400115B (de) 1990-01-17 1990-01-17 Magnetisch angepresste rakel und rakelvorrichtung, insbesondere mit rundschablone (siebzylinder)
AT92/90 1990-01-17
AT181/90 1990-01-26
AT18190A AT393465B (de) 1990-01-26 1990-01-26 Durch eine magneteinrichtung mittels magnetkraft angepresste rakelvorrichtung mit einer rakelleiste
PCT/AT1991/000010 WO1991010567A1 (fr) 1990-01-17 1991-01-16 Racloir et dispositif de raclage a pression magnetique, particulierement avec cylindre perfore

Publications (2)

Publication Number Publication Date
EP0463142A1 EP0463142A1 (fr) 1992-01-02
EP0463142B1 true EP0463142B1 (fr) 1994-04-13

Family

ID=25591420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91902322A Expired - Lifetime EP0463142B1 (fr) 1990-01-17 1991-01-16 Racloir et dispositif de raclage a pression magnetique, particulierement avec cylindre perfore

Country Status (7)

Country Link
EP (1) EP0463142B1 (fr)
JP (1) JPH04503644A (fr)
AT (1) ATE104211T1 (fr)
BR (1) BR9103971A (fr)
DE (1) DE59101358D1 (fr)
ES (1) ES2051119T3 (fr)
WO (1) WO1991010567A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9112032U1 (fr) * 1991-09-23 1993-01-28 Zimmer, Johannes, Klagenfurt, Kaernten, At
JP6233799B2 (ja) * 2013-09-13 2017-11-22 株式会社小森コーポレーション ロータリースクリーン印刷装置
DE102015205025B4 (de) 2014-03-26 2022-09-01 Koenig & Bauer Ag Verfahren zum Erzeugen der optimalen Anpresskraft einer Rakel an ein Drucksieb und eine hierfür geeignete Rotationssiebdruckmaschine
CN115946437B (zh) * 2023-03-09 2023-05-23 礼德新能源江苏有限公司 一种光伏硅片印刷机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921521A (en) * 1970-07-23 1975-11-25 Zimmer Peter Squeegee device
AT327853B (de) * 1973-10-25 1976-02-25 Zimmer Johannes Rakelanordnung
AT363901B (de) * 1976-09-14 1981-09-10 Zimmer Johannes Rakelanordnung
AT389676B (de) * 1983-10-06 1990-01-10 Johannes Zimmer Rakelvorrichtung mit einer vorzugsweise magnetisch angepressten rakelrolle
EP0311728B1 (fr) * 1987-10-10 1993-03-10 Johannes Zimmer Dispositif de raclage
JPH03501822A (ja) * 1987-10-10 1991-04-25 ツインマー，ヨハネス 塗着装置

Also Published As

Publication number Publication date
JPH04503644A (ja) 1992-07-02
BR9103971A (pt) 1992-05-19
DE59101358D1 (de) 1994-05-19
EP0463142A1 (fr) 1992-01-02
ATE104211T1 (de) 1994-04-15
WO1991010567A1 (fr) 1991-07-25
ES2051119T3 (es) 1994-06-01

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