EP0504501B1 - Dispositif à racle - Google Patents

Dispositif à racle Download PDF

Info

Publication number
EP0504501B1
EP0504501B1 EP91250083A EP91250083A EP0504501B1 EP 0504501 B1 EP0504501 B1 EP 0504501B1 EP 91250083 A EP91250083 A EP 91250083A EP 91250083 A EP91250083 A EP 91250083A EP 0504501 B1 EP0504501 B1 EP 0504501B1
Authority
EP
European Patent Office
Prior art keywords
doctor
bar
squeegee
recess
doctoring device
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
EP91250083A
Other languages
German (de)
English (en)
Other versions
EP0504501A1 (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
Priority to EP91250083A priority Critical patent/EP0504501B1/fr
Priority to DE59106731T priority patent/DE59106731D1/de
Priority to AT91250083T priority patent/ATE129188T1/de
Publication of EP0504501A1 publication Critical patent/EP0504501A1/fr
Application granted granted Critical
Publication of EP0504501B1 publication Critical patent/EP0504501B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B41F15/426—Inking units comprising squeegees or doctors the squeegees or doctors being magnetically attracted

Definitions

  • the invention relates to a squeegee device with a squeegee element, which exerts a squeegee function when pressed against a surface to be processed (work surface).
  • the doctor element extends parallel to a longitudinal axis of the doctor device across the working width transverse to the working direction, i.e. transversely or perpendicular to the relative direction of movement between the work surface and doctor blade. It belongs to the genus of devices in which a holding and pressure bar is assigned to the doctor element, with which the working position of the doctor element is determined and its contact pressure is brought about.
  • Known devices of the type mentioned are provided as application devices for substances on a work surface to be printed or coated.
  • Application widths that occur in practice are in particular several meters (for example 5 m and more).
  • system deviations between the squeegee working edge and the work surface must be avoided or as small as possible. It has been found that, for example, a system or straightness deviation of only 1/10 mm causes an adverse change in the amount of the doctored substance of 100 g / m 2 and more.
  • system / straightness deviations usually have to be less than 1/10 mm, and they can often only be of the order of 1/1000 mm.
  • a uniform application should not only apply to every application width that occurs in practice, i.e.
  • Known application devices with a holding and pressure bar for a squeegee bar are based on choosing the cross-sectional and material rigidity of the squeegee bar so large that the squeegee bar is an element that has longitudinal or straightness stiffness over the working width, with the squeegee bar possibly perpendicular to the work surface, but still ensuring a certain longitudinal stiffness, a certain bending elasticity against forces perpendicular to the work surface and at the level of the contact forces acting on it.
  • a squeegee device is known from US Pat. No. 4,241,691, a rigid squeegee bar being displaceable in one direction in a recess of the holding bar to compensate for pressure differences and being supported elastically against the bottom surface in the recess.
  • Known application devices are provided for printing patterns with flat or round stencils as well as for coating applications with, if necessary, screen cylinders.
  • Devices with a doctor element can in principle be considered for all applications in which a sheet-like element such as a web or a sheet of material or another sheet-like structure such as a roller or a belt is to be treated by a wiping, stripping or sealing process.
  • Application devices of the known type of construction are, however, considerably restricted with regard to their application possibilities, since, as practice has shown, adaptation requirements of the squeegee edge to the surface to be treated cannot be satisfied satisfactorily for different applications and coatings, or, and then only to a limited extent, only with differently designed doctor blades.
  • the object of the invention is to provide a squeegee (squeegee device) which can be used for a wide variety of squeegee functions and which is intended to avoid the disadvantages described, the squeegee edge of a squeegee bar interacting with a holding / pressure bar being in optimal working contact with the surface to be treated / processed especially large working widths should be feasible.
  • a squeegee device comprising a holding / pressing bar which extends longitudinally over the working width parallel to the longitudinal axis of the squeegee device and has a longitudinal recess and a squeegee bar provided with a squeegee element which is inserted into the longitudinal bar holding bar, the squeegee element being above the working width protrudes from the holding strip longitudinal recess, and which works under pressure against a sheet-like element, such as a web, a sheet of material or another sheet-like structure, such as a roller or a belt, which is moved transversely and relative to the squeegee element, the squeegee strip having no fixed connection is inserted with the retaining strip in the retaining strip longitudinal recess, the doctor strip along the upper longitudinal side opposite the doctor element on the bottom surface the retaining strip longitudinal recess is supported in a pressure-elastic manner and is guided against lateral surfaces of the longitudinal rece
  • the squeegee with the lowest possible inherent stiffness and independent and unaffected by inherent stiffness and / or straightness behavior of the holding / pressure bar can only be optimally conformed to it with great precision in accordance with the straightness or the surface and material characteristics of the work surface.
  • the squeegee device according to the invention does not contrast the straightness of the squeegee working pad with its own straightness of the squeegee device, and disadvantageous influences which conventionally result from a parallel setting of the squeegee device with the squeegee working pad are eliminated.
  • the squeegee is inserted into the retaining strip recess on all sides without attachment and in all degrees of freedom transverse to the longitudinal extension with at least slight sliding mobility relative between the retaining strip and squeegee.
  • the squeegee strip is thus completely free of jamming in the holding strip recess, that is to say it is exposed and free of tension.
  • the snake-like or whip-like shape of the squeegee contributes to this. This means that the squeegee bar and the holding bar interact only loosely and therefore free of any elastic clamping forces.
  • the cross-sectional and material behavior according to the invention of the squeegee strip ensures that the squeegee strip is convex and concave, deformable and / or bendable in all degrees of freedom transversely to its longitudinal extent, in such a way that the inherent rigidity still remaining of the squeegee strip does not affect its adaptability to the work surface .
  • Another combination measure essential to the invention is that the squeegee strip loosely inserted into the retaining strip recess, which can be bent on all sides in a serpentine manner, rests loosely on the retaining strip recess bottom over the working width on the side opposite the squeegee element.
  • a squeegee device (a squeegee) is achieved which, although viewed in cross section, is composed of several components (retaining strip, pressure-elastic layer, squeegee bend which can be bent in a serpentine line), ensures a squeegee strip working edge or system which is free from conventionally disadvantageous stiffness and / or connection properties of the components across the working width also slight unevenness of the work surface (ie also in the order of 1/1000 mm).
  • the squeegee strip or squeegee edge / surface reacts extremely sensitively at any point along the working width in adaptation to the work surface / base.
  • Doctor blades according to the invention are outstandingly suitable not only for printing on patterns with flat or round stencils, but also for coating applications with pastes of very high viscosities, if necessary, and, if appropriate, with screen cylinders. Rather, it is also extremely suitable for use, for example, in carpet finishing, especially when printing on carpets with round stencils, with extremely low-viscosity printing inks being usable.
  • doctor blades according to the invention coatings (full-surface applications) of the highest quality can be applied to surfaces with a wide variety of material properties, in particular also to flat bodies such as rollers, conveyor belts, plates, etc.
  • doctor blades according to the invention are used equally well for cleaning rollers or conveyor belts, in particular for Removal of contaminants and / or liquids or layers and films. It is also particularly suitable for leveling work surfaces. It should be particularly emphasized that doctor blades according to the invention can be used for very large working widths of 5 m and more, with the highest possible working precision and uniformity of width being achievable. Conventional restrictions with regard to the arrangement and storage of the retaining strip have been eliminated in the doctor device according to the invention.
  • This advantage is based on the basic idea of the invention, to give the squeegee a slack characteristic on all sides, regardless of the elements which guide, guide, hold and / or press it on, such as strips, webs and plates, it being essential that the slackness in all Degrees of freedom is formed transversely to the longitudinal length of the squeegee bar by coordinating the material properties and the cross section of the squeegee bar with one another.
  • a further basic idea is to leave the slackness of the squeegee on all sides free from influences by body stiffness, bending properties and / or straight behavior of the guiding, guiding, holding and pressing elements, by the squeegee being able to slide and / or float without attachment, ie in particular is loosely inserted into the holding / pressure bar without screw, adhesive and / or clamping connection.
  • the pressure-elastic contact of the squeegee bar on the side facing away from the squeegee element in the retaining bar recess is always provided without attachment.
  • a special embodiment consists in forming the squeegee itself from a pressure-elastic material which distributes the contact pressure evenly over the working width.
  • a separate pressure-elastic element, which extends over the working width is inserted loosely, ie without a fixed connection to the holding bar, between the recess bottom and the doctor bar.
  • Such a pressure-elastic element is designed in particular as a body to which hydraulic or pneumatic force can be applied in order to generate contact pressure against a holding bar held in a fixed position relative to the work surface.
  • An embodiment of the invention consists in also forming or arranging pressure-elastic layers or elements on the longitudinal sides of the squeegee. A kind of sliding sliding movement is achieved the squeegee in the retaining strip recess.
  • One embodiment of the invention consists in lining the recess wall of the retaining strip with a pressure-elastic profile body which is loosely inserted into the recess and extends over the recess length.
  • sliding layers or elements are formed or arranged between the lateral longitudinal sides of the squeegee bar and the holding bar.
  • a squeegee device according to the invention with sliding elements and / or pressure-elastic bodies inserted into the holding strip recess enables these elements and bodies as well as the squeegee strip to be assembled or disassembled in a simple manner. This makes it easy and easy to replace the squeegee strip.
  • squeegee strips can be inserted into the holding strip recess, the selection of which depends on the squeegee work to be carried out.
  • it depends on the cross-sectional shape of the squeegee strip in the squeegee area, i.e. to the shape of the actual doctor element, in particular acute-angled and round doctor blade edges or surfaces can be formed simply or, viewed in the working direction, several times in succession.
  • the squeegee is in one piece, and it always consists of a material that can be bent and deformed in a serpentine manner on all sides transverse to its longitudinal extension in accordance with its cross-sectional dimensioning.
  • the squeegee strip element separately as a rod or strip element and to insert it one or more times into the squeegee strip designed according to the invention. It is pointed out that the separately used doctor element in the area of the retaining strip recess approximately has the same all-round bending property as the squeegee strip joined to the squeegee element.
  • a special type of design is that the squeegee element forming a component of the one-piece squeegee strip or inserted separately into the squeegee strip in the direction of the work surface is so far free and provided with such a bending elasticity that it depends on the relative movement between the work surface and the squeegee device against the Work surface in a tilted position at an acute angle against the work surface in accordance with the working direction.
  • doctor element element rods which are very small or tiny in cross section, the rod material being relatively hard, e.g. can be selected from steel, but due to the tiny rod cross section the serpentine bendability in pairing with the squeegee bar is guaranteed.
  • an application doctor blade element profile bar as a roller bar in the doctor blade strip.
  • the squeegee device according to the invention is in any case excellently suitable for contact pressure caused by gravity of the holding / pressure bar, magnetically, hydraulically and / or pneumatically.
  • the contact pressure is caused by loosely interacting with the squeegee or the squeegee profile parts or device strips, without the bending, inherent rigidity and / or straightness characteristics of the pressing elements can have an adverse effect on the squeegee element.
  • the doctor device according to the invention or its doctor bar / element can be arranged in any spatial position, i.e. aligned from above or below to horizontally, vertically or diagonally running doctor surfaces, so that it can be applied against rollers in any circumferential position, including at the lower vertex of the roller, or from below against a work surface or one leveling layer already applied, parts of this layer peeling or peeling can work.
  • the doctor device according to the invention is outstanding as a drying doctor for removing cleaning or rinsing liquid from conveyor belts, from a roller or the like. Suitable areas.
  • doctor device according to the invention Since the doctor device according to the invention is completely decoupled from the bending, inherent stiffness and / or straightness properties of pressing elements or strips, it can be used particularly advantageously as a tilt or swivel-controlled doctor device.
  • the slope or angle of the edge or surface of the doctor element relative to the working surface and / or the substance space located in front of the doctor element in the case of substance application devices can thus be influenced favorably and advantageously during doctor operation with regard to a controlled and targeted doctor result.
  • FIG. 1, 1 denotes a squeegee device according to the invention, hereinafter also referred to as a squeegee, comprising a profile holding strip 2 with an integrated, groove or recess 30 with a rectangular cross section, which is provided with two lateral sliding surfaces 290 and with a support surface area 4 on the recess bottom, and a profile squeegee strip 5 inserted into the groove 30 with a rectangular cross section corresponding to the recess, the side of which protrudes against a processing surface 19 as a squeegee element 6 is formed, which forms a squeegee or working edge over the working area with a contact surface or line.
  • a squeegee comprising a profile holding strip 2 with an integrated, groove or recess 30 with a rectangular cross section, which is provided with two lateral sliding surfaces 290 and with a support surface area 4 on the recess bottom, and a profile squeegee strip 5 inserted into the groove 30 with
  • An upper lateral squeegee strip surface 7 opposite this squeegee side is provided and designed to absorb a force which causes the squeegee contact pressure. Characteristic properties and configurations of the doctor blade strip 5 according to the invention are described in more detail below with reference to FIGS. 9 to 12.
  • the embodiments of the doctor device according to the invention are always shown in cross section.
  • the doctor device with a longitudinal axis of the doctor device extends perpendicular to the device cross section over the working width or over the width of a processing machine.
  • the squeegee strip 5 is held and guided in the recess 30 laterally and in the direction transverse to the processing surface 19 so as to be slidably movable. It is essential that the squeegee strip 5 is dimensioned in cross section so that it is located in the holding strip recess 30 without jamming.
  • a locking part 210 is arranged on the underside of the holding bar 2 and engages in a cut-out area of the squeegee bar 5 in order to prevent the squeegee bar 5 from being removed from the squeegee operating state, for example when the squeegee 1 is lifted off the work surface 19 and during squeegee handling operations can accidentally slide out or fall out of the holding and guiding groove 30.
  • Reference numerals 11 to 14 denote lateral holding and sliding guide parts forming system elements of a processing machine, not shown, which determine the position of the doctor blade 1 and enable it to slide along a surface plane 15 or 16 which is perpendicular or inclined to the application plane 19 and extends parallel to the longitudinal axis of the doctor device. To move the retaining strip 2 along the surface 16, the contact elements 11 to 14 are jointly tilted or pivoted accordingly.
  • the squeegee 5 and the holding bar 2 are held freely movable in the direction transverse to the processing surface 19, so that the squeegee 5 rests against the working surface 19 with relative movement between it and the holding bar 2, possibly with the interposition of a circular or flat template 17 or 18 .
  • Such stencils are provided in application devices for pattern printing or coating a work surface with a substance 70 (FIG. 2).
  • the work surface 19 which is formed by the material to be processed with a doctoring process, lies on a base such as a work table 20 or a roller (not shown in FIG. 1, 2).
  • the base 20 is provided in particular as a magnetic table or as a magnetic roller. In this way can then be at least partially made of magnetizable material holding strip 2 by means of magnetic force of the base 20 for pressing the doctor element 6.
  • the doctor blade 1 shown in FIG. 1 only with loose, unloaded contact to the work surface 19 is shown in FIG. 2 in the operating state.
  • a force required for the doctor pressure is introduced into the doctor blade 5 or its parts 7, 6.
  • the pressure-elastic force transmission parts 8 and 8 ' are compressed perpendicular to the work surface 19 from a cross-sectional dimension 32 (FIG. 1) in the unpressurized state to a cross-sectional dimension 33 (FIG. 2).
  • This also results, due to the action of force, in a sliding sliding relative movement between the squeegee 5 and the sliding surfaces 290 within the recess 30 of the holding strip 2.
  • the relative movement perpendicular to the processing surface 19 is illustrated by arrows 34/34 '.
  • the measure of the relative movement of the doctor blade strip 5 is equal to the difference between the two cross-sectional dimensions 32 and 33.
  • the contact pressure represented by arrow 31 can advantageously be applied by means of gravity through the weight of the holding strip 2.
  • This contact pressure can be increased by applying additional force to the retaining strip 2 in the direction 31, namely by additional weight loads and / or the action of mechanically, hydraulically or pneumatically actuated aids and / or by magnetic force.
  • a strengthening of the doctor blade contact pressure by magnetic force presupposes that the holding strip 2, parts thereof and / or non-positively connected parts are made of magnetizable material, the magnetizable body having a magnetic device which is inserted into the working base 20 (table, roller). installed, interact.
  • Arrows 35 and 36 denote one in Relative working movement between the doctor blade 1 and the working surface 19 or a template 17, 18.
  • FIGS. 3 and 4 show a squeegee device 1 according to the invention in a construction which is structurally simplified compared to FIGS. 1 and 2.
  • the squeegee strip 5 like that according to the embodiment of FIGS. 1 and 2, has a serpentine bending deformability (explained below with reference to FIGS. 9 to 12).
  • the squeegee 5 consists of a pressure-elastic material which is easily deformable under squeegee pressure, its material characteristics and cross-sectional shape being selected and selected such that the squeegee 5 with its parts 6, 7 has a pressure elasticity which is uniform over the working width , namely a compressible compressibility and deformability in addition to the serpentine bending deformability.
  • the separate pressure-elastic elements 8, 8 'according to FIGS. 1 and 2 are omitted due to the special material, dimension and functional characteristics imparted to the squeegee strip 5.
  • a further special design of the squeegee 1 according to the invention is that the squeegee strip 5, as shown in FIGS. 3 and 4, is dimensioned smaller in its cross-sectional width 38 compared to the holding strip groove width 39 to the extent that one is introduced corresponds to the contact pressure in direction 31 (FIG. 4) of deformation (increase in thickness) of squeegee strip 5 until groove width 39 is reached.
  • the squeegee strip 5 or its material is so flexible that no clamps which impede the squeegee function occur in the retaining strip recess 30.
  • the displacement movement resulting from the introduction of force in the direction 31 and from the pressure deformation of the squeegee strip 5, as described above the holding bar 2 in the direction against the work surface 20 is shown in Fig. 4 with 34 ''.
  • FIG. 5 corresponds to the squeegee device 1 according to FIGS. 3 and 4 with regard to the pressure-elastic material property and the cross-sectional dimensioning in the groove 30.
  • the force flow or the pressure deformation of the squeegee bar 5 is schematically illustrated by arrows 37, 37 ' .
  • a squeegee strip 61 which carries out the squeegee work is inserted as the squeegee working element 6.
  • this consists of a material whose hardness and abrasion resistance is greater than that of the material from which the squeegee strip 5 is made.
  • the squeegee working element 61 can also consist of material which is relatively soft and preferably slidable compared to the material of the holding strip 5.
  • the squeegee working element 61 based on its cross section, can consist of material that can be deformed by bending elasticity or of material that is not deformable by the squeegee contact pressure, depending on the required squeegee work performance and function.
  • a particularly preferred design according to the invention consists in that, on the basis of the choice of material and dimensioning, the all-round bendability of the squeegee strip 5 as well as of the squeegee working elements which can be used in this embodiment according to the invention is ensured.
  • Fig. 6, 62 denotes a circular cross-section squeegee element, e.g. a profile rod rotating in the direction of arrow 41 in the form of a doctor roller or a e.g. round rod fixed against rotation by a pin 42, i.e. can be a round profiled doctor blade.
  • a circular cross-section squeegee element e.g. a profile rod rotating in the direction of arrow 41 in the form of a doctor roller or a e.g. round rod fixed against rotation by a pin 42, i.e. can be a round profiled doctor blade.
  • the pressure-elastic element consists of a hollow body 8 '' which is oval in cross-section and which, depending on the required squeegee pressure, is open or closed at the ends and possibly filled with a medium under pressure (e.g. compressed air).
  • a medium under pressure e.g. compressed air
  • FIG. 8 shows a cylinder element 8 ′′ ′′ with an oval cross section that can be deformed under pressure. 8 that the doctor pressure does not necessarily have to be brought about by the holding strip 2 as an independent pressing part 2.
  • the holding bar 2 with the squeegee bar 5 inserted therein and the squeegee element 6 to be clamped between the working base 20 and a U-shaped pressing and holding bar 43 which is open to the working surface 19.
  • either the pressure bar 43 can be moved in the direction of the pressure force (arrow 31), and / or in Fig. 8, instead of the element 8 '' ', an independent pressure force-generating, pressure-elastic element can be applied with an adjustable pressure force used.
  • squeegee strips 5 according to the invention consist, as in all other exemplary embodiments, of a material which has the material characteristics according to the invention of optimum flexibility, that is to say bendability on all sides with respect to the longitudinal extent of the squeegee strip 5.
  • a squeegee working element in the squeegee strip 5 6 used which consists of relatively soft, pressure-elastic deformable material and extends with its high cross-sectional edges relatively far into the interior of the retaining strip groove 30.
  • the release of the protruding working part 63, 63', a bending or curvature of the released working part 63, 62 'influencing the squeegee work performance can be made against the high edge of the Doctor element 6 take place.
  • the squeegee parts or elements 6, 61 of the exemplary embodiments according to FIGS. 1 to 5 can also be appropriately designed, dimensioned and designed in order to achieve a bend or curvature of the exposed part if necessary.
  • FIGS. 9 to 11 The characteristic of squeegee strips 5 according to the invention is shown with reference to FIGS. 9 to 11.
  • the perspective representation is intended to illustrate the characteristic feature of the invention of the all-round bendability of a one-piece squeegee strip 5 (FIG. 10) and functionally identical two-part squeegee strips (FIG. 9, 11, 12 (with separate elements 6)), each given with respect to the longitudinal extension axis.
  • the squeegee strip 5, with a squeegee element 6 possibly inserted into it has an unusual serpentine or whip-shaped curvature, deformation and bending characteristic in the manner of a serpentine, whip and belt-like element which extends for a long time.
  • the squeegee bar therefore corresponds only in the cross-sectional representation to an element normally understood in mechanical engineering practice as a profile bar.
  • the squeegee strip 5 according to FIG. 10 shows a whip-like squeegee strip 5 which is "highly flexible" according to this requirement and which has a cross section similar to that of the squeegee strip shown in FIG. 5. Two cross-sections are indicated by dashed lines along the length of the squeegee strip.
  • an essential basis of the invention consists in specifically dispensing with the conventional doctoring constructions own construction straightness axes, the doctoring edge / contact surface or the doctoring strip 5 with the doctoring element 6 by a special material and dimension characteristic of the doctoring strip and by a special arrangement to adapt the parts to one another with the lowest possible squeegee inherent rigidity, ie with the greatest possible conformability to the squeegee work surface.
  • FIG. 9 shows a squeegee strip 5 corresponding to the embodiment variant according to FIGS. 7 and 8, in which a strip-shaped squeegee working element 6 is inserted.
  • FIG. 9 is intended to clarify that the squeegee strip 5 of this embodiment has a slightly lower bendability on all sides over its longitudinal extent than the squeegee strip 5 shown in FIG. 10, which corresponds to those in FIGS. 1 to 4. It is emphasized, however, that the ease of bendability of the squeegee strip 5 according to FIG. 9 on all sides is provided so large that the whip or serpentine shape and bendability which is essential for the invention is ensured.
  • a profile bar 62 with a circular cross-section is inserted into the doctor blade strip 5 (corresponding to the embodiment in FIG. 6) as a doctor element. Otherwise, the explanations for FIG. 9 also apply here.
  • FIG. 12 shows, in a representation similar to FIGS. 9 to 11, a plurality of doctor blade profile strips 5 with different cross-sectional shapes, partly without and partly with inserted doctor blade working elements 6, each lying on an imaginary surface.
  • FIGS. 13 to 18 show further variants of doctor devices 1 designed according to the invention, with holding and movement devices or parts of the devices which are, in particular, functionally essential.
  • Fig. 13 shows an embodiment variant of the holding bar 2 which corresponds essentially to Figs. 1 to 4 and 7. It is shown that a doctor device 1 according to the invention, i.e. the holding strip 2 with the squeegee strip 5 designed in accordance with the invention and being able to be moved by sliding, with its vertical body center surface 44 parallel to the longitudinal axis of the squeegee device, can be pivoted about an imaginary axis 45 running along the squeegee contact area 45 in the direction of the surface angle position 44 'and 44' '.
  • a doctor device 1 according to the invention i.e. the holding strip 2 with the squeegee strip 5 designed in accordance with the invention and being able to be moved by sliding, with its vertical body center surface 44 parallel to the longitudinal axis of the squeegee device, can be pivoted about an imaginary axis 45 running along the squeegee contact area 45 in the direction of the surface angle position 44 'and 44' '.
  • FIG. 14 shows an exemplary embodiment with a squeegee swivel construction, with a swiveling movement D of the holding bar 2 being carried out by means of circular cylindrical shaft journals 46 formed at their front ends and extending in the direction of the longitudinal axis of the squeegee device, each of which loosely engages in a swivel bearing receptacle 47 with a circular cross section, which is incorporated in an end-side holding part 48 formed by a plate.
  • the squeegee strip 5 is inserted into the holding strip 2 in accordance with the previously described exemplary embodiments.
  • the holding parts 48 are held transversely in the direction of the double arrow 49, in particular perpendicular to the work surface 19, in a processing machine, not shown.
  • each end plate 48 can be moved between two slide guide parts 50, 50 'which are arranged laterally in the region of the pin 46 and are only shown schematically.
  • 51 is attached to the holding bar 2 pivot control and holding arm. By means of this arm 51, a desired angle adjustment of the doctor blade can be accomplished and determined by an auxiliary device (not shown).
  • FIG. 15 shows another doctor blade swivel device which is functionally identical to the doctor blade device according to FIG. 14.
  • the retaining strip 2 consists continuously of a circular cylindrical body over its entire longitudinal extent, in which a squeegee strip 5 according to one of the previously described performance variants is inserted.
  • the retaining strip 2 is loosely adjacent to the lateral U inner walls and is movable in the direction of the double arrow 49 in a profile strip 52 which extends parallel to the longitudinal axis of the squeegee and has an internal cross section and is open to the work surface 19.
  • the U-profile strip 52 can be divided into two or more parts divided over the working width.
  • a holding part 48 in the form of a plate arranged on the end face of the squeegee device 1 has a rectangular bearing recess 55 which is open towards the end side of the holding bar 2.
  • the plate 48 is part of a storage device of a processing machine, not shown.
  • Two pins 56, 56 ′ protrude into the bearing opening 55, which are fastened to the front end of the neck part strip 2 and extend parallel to the longitudinal axis of the squeegee device. Both ends of the holding strips are preferably provided with such a tilting / pivoting bearing.
  • a pivot bearing according to FIG. 14 can also be provided on the other end of the retaining strip.
  • the pins 56, 56 ' are arranged at such a transverse distance that they can be moved in the bearing opening 55 from a horizontal contact position at the opening edge (FIG. 16) into a diagonal position (FIG. 17). If the holding part 48 is moved in the direction 49 (FIG. 16) towards the processing surface 19 into the position shown in FIG. 17 and either the doctor blade 1 in the direction of the arrow 35 or the working surface 19 (optionally together with a template 18) in Moved in the direction of arrow 36, the squeegee bar 5 tilts with the holding bar 2 into the inclined position shown in FIG. 17.
  • the retaining strip 2 is therefore subject to a tilting or swiveling movement about an axis parallel to the longitudinal axis of the doctor blade device in the direction of the arrow 57, to the point of abutment 58 of the pin 56 'on the opening edge of the bearing opening 55.
  • the size of the pivoting range is predetermined.
  • 16 and 17 can advantageously be operated as a tipping squeegee, which is lifted from the work surface 19 when the working direction is reversed (vertical position of the squeegee strip according to FIG. 16) and works in the opposite working directions with correspondingly opposite tipping positions.
  • a pivoting or tilting movement of a doctor element 6 of a doctor device 1 according to the invention can advantageously also be brought about by a design according to FIG. 18.
  • a retaining strip 2 which is rectangular in cross section, is only slidable in a straight line in the direction perpendicular to the work surface either over its entire length or in parts of its longitudinal extent between only schematically illustrated slide guide parts 59, 59 'of a processing machine, not shown 19 held. Swiveling movement of the doctor element 63 about an axis parallel to the longitudinal axis of the doctor device is effected solely by the fact that the working element 63, ie the doctor element 6 protruding from the holding bar 2, of the doctor bar 5 is released with a relatively large length, in contrast to the exemplary embodiments described above.
  • a tilting / swiveling movement of doctor element 6, 63 is achieved, which corresponds in function and effect to that of the embodiment according to FIGS. 16, 17.
  • the pivoting range of the squeegee working element 63 is limited by surfaces 60, 60 ′ of the holding bar 2 which are parallel to the longitudinal axis of the squeegee device. With these surfaces 60, 60 ', the retaining strip groove 30 is widened in funnel shape towards the working surface 19.
  • FIG. 19 shows a squeegee device 1 according to the invention with a holding strip recess 30 which is rectangular in cross section and which is formed off-center in the holding strip body. Holding parts required for the holding strip 2 are not shown.
  • Such an asymmetrical arrangement enables the setting of special angles of attack of the squeegee bar 5 relative to the work surface. 19, in the area in front of the doctor element 6 between the work surface 19 or a template 17 or 18 and the holding strip 2, a relatively large space (see arrow S) for a coating substance has been reached.
  • the doctor strip 5 By pivoting (arrow D) and lowering the cross-sectionally cylindrical holding strip 2 by means of a bearing (not shown), the doctor strip 5 can be brought from the vertical position into a tilted position, the space in front of the doctor element 6 being increased. If the same doctor device 1 is used for doctor work in the opposite direction, then a substance storage space is reached in front of the doctor element 6 which is less open.
  • a change in position the squeegee 5 in the direction of the work surface 19 can be effected in that the pressure-elastic element 8 can be changed and adjusted in cross-section in the direction of the work surface 19 by connection to a pressure system under targeted control. In this way, the squeegee 5, especially when changing the pivoting of the holding bar 2, can be pushed out of the holding bar 2 via a defined path or the squeegee element 6 can be released to a greater extent.
  • a special design of the doctor device 1 according to the invention is that the pressure-elastic element 8 is incorporated into the body of the doctor bar 5, so that it can be handled in one piece with it.
  • the pressure-elastic element 8 lies loosely and freely movable on the bottom wall of the retaining strip recess 30.
  • the holding strip 2 is inserted into a holding bar 43 in a manner similar to that in the exemplary embodiment according to FIG. 8, wherein it is mounted in an alternative manner to the working surface 19.
  • the upper doctor blade surface 7 opposite a doctor element 6 is wedge-shaped or roof-shaped.
  • the squeegee strip 5 is supported on both sides longitudinally obliquely against the surface of the retaining strip recess 30 on both sides, the roof-shaped squeegee strip surface 7 extending between two pressure-elastic hollow bodies 8. In this way, a very pronounced pressure-elastic, floating movement support of the squeegee strip 5 in the holding strip recess 30 is achieved.
  • the two pressure-elastic hollow bodies can be subjected to different pressures in a targeted manner.
  • the doctor bar 5 can be provided with a doctor roller 6 as a doctor element.
  • the doctor bar 5 can also be provided with other doctor elements, such as a doctor blade, or a desired doctor element shape, eg have an obtuse-angled squeegee working edge. Examples of such possibilities are shown in dashed lines in FIG. 21.
  • a squeegee device 1 comprises a swivel arm 205 which rises upwards and is arranged centrally and firmly on the holding bar 2 and is provided at its free end with a thickening 206 which is circular in cross section and which swivellably engages in a fork body 23 which is open at the bottom which is movable along an axis 207 extending in the working direction and parallel to the application surface 19 into the position shown in dashed lines.
  • This causes a pivoting movement of the holding bar 2 around the contact line of the doctor element 6, the holding bar 2 lying loosely against a positioning system arranged on the longitudinal side of the holding bar 2.
  • the part of the squeegee strip 5 which extends in the holding strip recess 30 is inserted into a U-profile body 21 which is pressure-elastic and extends across the recess length transversely to the longitudinal axis of the squeegee device.
  • the squeegee 5 is loosely inserted in the U-profile body 21 so as to be movable.
  • FIG. 23 shows a squeegee device 1 according to the invention, the squeegee strip 5 of which, like the squeegee device according to FIG. 22, is loosely inserted in a compression-elastic U-profile body embedding 21.
  • the surface of the U-profile body 21 or the wall of the retaining strip recess is provided with a sliding layer 29.
  • This is a very pronounced sliding-sliding mobility Squeegee bar 5 reached in all degrees of freedom across the longitudinal axis of the squeegee device, so that the squeegee bar 5 is guided and held on all sides in a floating manner.
  • This free floating mobility as in the exemplary embodiment in FIG.
  • the squeegee strip 5 is formed in one piece with a pointed squeegee working element 6.
  • the squeegee working element 6 can have a different shape, for example also be round, as shown in dashed lines in FIG. 23.
  • the squeegee device according to FIG. 23 comprises a special bearing 22 for the holding bar 2.
  • a support bar 222 is fixedly connected to a holding arm 221. This engages with a T-piece in a bearing recess 223 of the retaining bar 2, which is perpendicular to the work surface 19 movable against the arm 221, but is held captive on this.
  • the squeegee device 1 is positioned in a processing machine by means of the support bar 222, wherein it is brought into the desired position by changing the position of the support bar 222 in direction B before or during operation.
  • the holding strip 2 is at least partially made of magnetizable material, the contact pressure being generated and set by means of a magnetic base 20.
  • a gap doctor device comprises two doctor device units 110, 120, each of which forms a doctor device in the manner described above. That is to say that each doctor unit 110, 120 comprises a holding strip 2 or housing parts 250 which form a holding strip and are composed of several parts, wherein in each case a doctor strip 5 is designed in accordance with the invention and is supported on a surface 7 under pressure-elastic support is loosely slidably inserted into the retaining strip recess 30 relative to the retaining strip bottom.
  • 24 and 25 comprises four spaces of a doctor unit housing which extend over the working width parallel to the longitudinal axis of the doctor unit.
  • An upper space is formed by a container or trough 24, which merges into a slot-shaped space 241 located centrally below and formed by a hollow strip 240.
  • the third or fourth housing space extends on each side of the hollow strip 240, each of these housing spaces at least partially forming the holding strip recess 30 for the squeegee strip 5.
  • the two squeegee strips 5, which thus form a pair of squeegee strips, protrude with their squeegee elements 6 of the same length from the squeegee housing.
  • a space or gap 26 is formed between the two doctor elements 6, into which the space 241 of the hollow strip 240 opens. All rooms are sealed on the two end faces of the doctor blade device 1 by walls or plates.
  • the container or trough 24 is loaded with an application substance 70 which, if necessary, passes under pressure through the slot space 241 into the gap space 26 between the two doctor elements 6.
  • the squeegee strips / elements 5/6 seal the substance gap 26 with their working edges lying against the work surface 19 or possibly against a template 17, so that they perform a sealing function in addition to the application function.
  • the doctor elements 6 of the doctor unit 110, 120 are pointed, while according to FIG. 25 a round rod is inserted as the doctor element 6.
  • the housing space of the doctor unit 110 is used entirely as a holding strip recess 30 for the one doctor strip 5, which is supported against two pressure-elastic elements 8.
  • the squeegee strip 5 of the squeegee unit 120 is flatter and is only supported against a pressure-elastic element 8.
  • a bar 25 which is fixedly connected to the doctor unit housing and forms a wall of the retaining bar recess 30.
  • retaining strip bodies 2 are inserted into the housing spaces on both sides of the slot space 241 and are firmly connected to the housing frame by a screw connection.
  • the holding strip recess 30 for the squeegee strip 5 is formed, which rests loosely on its surface 7 against a pressure-elastic element 8.
  • the squeegee device 1 according to FIG. 24 is pivotably held via a joint arranged on the trough 24, while the squeegee device 1 according to FIG. 25 bears against holding / sliding guide parts 11 to 14 in a slidable manner.
  • Such storage has been described with reference to FIG. 1. -
  • the doctor blades can be operated in both directions A.
  • a doctor device 1 according to the invention according to FIG. 26 is also designed as a gap doctor device.
  • the two doctor unit units 110 and 120 essentially correspond to the units according to FIGS. 24 and 25. Between the units 110 and 120, retaining strip wall elements 25 'are provided, so that the substance gap 26 between the two doctor elements 6 of the units 110 and 120 is correspondingly wider .
  • a relatively large slot space 241 is provided between the wall parts 25 'for supplying the substance 70 from the trough space.
  • the unit 110 comprises a squeegee strip which is two-part with the squeegee element 6 5. Two pointed doctor blade working edges 67 are formed on the doctor element 6.
  • the doctor unit 120 corresponds to an embodiment, as has been described, for example, with reference to FIGS. 1, 2 and 10.
  • a further doctor unit 130 is arranged downstream of the two units 110 and 120.
  • This unit is functionally identical to the embodiment according to FIG. 5.
  • two separate pressure-elastic elements 8 are provided.
  • the doctor blade 6 of the unit 130 has the purpose of leveling the substance 70 applied by the doctor bar 5 of the unit 120.
  • the two units 110 and 130 are provided with a locking part 210.
  • the trough 24 can be closed by a cover 28, which can also be arranged as a pressure bar which transmits contact pressure in the direction of the arrows 31.
  • contact can be made with magnetic force if, as shown in FIG. 26, the work surface 20 is provided with magnetic devices, the magnetic force of which acts on the holding / pressure bars 2, which at least partially consist of magnetizable material.
  • squeegees according to the invention can also readily be designed as gap-type squeegees which can work against a curved work surface 19 which, in the exemplary embodiments, extends along a magnetic roller base.
  • the doctor device units 110 and 120 are each connected via end-side wall parts or plates 101 which close the trough for the substance 70.
  • the position of the device units 110, 120 is provided such that the squeegee strips / element 5, 6 engage in the working path of the work surface 19.
  • the doctor blade device 1 according to FIG. 27 is arranged in the region of the upper apex of the roller base 20, while the doctor blade device 1 in FIG. 28 is provided near the side apex of the roller base 20. 28, the trough 24 comprises a lateral trough wall 27.
  • the doctor device 1 is with the holding bar 2 of the device unit 110 is supported on a console 107 of a processing machine (not shown in more detail).
  • FIG. 29 shows a similar arrangement to FIG. 26 with two doctor device units 110 and 120 according to the invention.
  • the trough 24 is funnel-shaped.
  • a contact pressure can be exerted mechanically on the holding strips 2 by means of a cover or bar 28. It may also be expedient to arrange the cover or bar 28 of a processing machine, not shown, in a fixed position and to connect it firmly to a sliding guide part 11, on which the holding / pressure bar 2 of the doctor unit 120 rests in a direction that is slidable in the direction perpendicular to the work surface 19. In such a case, the contact pressure is magnetic.
  • a doctor device according to the invention here in the form of a doctor blade 1 with doctor units 110 and 120, can easily work against a work surface 19 from below. If the squeegee device is operated by means of magnetic force between a magnetic contact device 20 and magnetizable holding / trough parts 2, 24, the device 1 rests with the trough 24 on consoles 108 with the trough 24 switched off with the electric magnetic force source. However, the brackets 108 of a processing machine (not shown) can also be moved in the direction of the working surface 19 with mechanical, pneumatic and / or hydraulic force, in order in this way to cause the doctoring device 1 to be pressed against the working system 20.
  • the substance 70 in the trough 24 is pressurized to ensure that it is fed into the working gap 26.
  • the gap space 26 and the slot space 241 are sealed by plates arranged on the end face. In the area of the gap space 26, each plate extends to the contact lines 103 and 104 of the doctor units 110 and 120.
  • FIG. 31 shows yet another embodiment of a doctor blade device 1 according to the invention in the form of a split doctor blade with doctor blade unit units 110 and 120.
  • the holding / pressure strips 2 are connected to one another by end plates 101 and a support bar 74.
  • 71 denotes an inlet opening for the substance 70, which is possibly provided in the end plate 101.
  • the squeegee device according to the invention shown in FIG. 32 shows a sliding element 29, which is arranged only on the one lateral longitudinal side of the holding strip recess 30. Practical tests have shown that with a sliding element 29 arranged in this way, a very large sliding mobility of the doctor blade 5 in the direction transverse to the work surface 19 can be achieved during doctor operation.
  • a contact pressure D c exerted on the holding bar 2 is transmitted to the pressure-elastic element 8 (D) and acts on the squeegee bar 5 or the squeegee element 6.
  • the squeegee strip 5 is inserted into the holding strip recess 30 so that it can be moved in a loose manner. If one wishes to prevent the squeegee strip 5 from slipping or sliding out of the recess 30 when the squeegee device is being operated outside the operating state, locking parts 210 are provided as shown in FIGS. 1 to 8. Slipping out must be avoided in particular in the case of a tilting doctor blade, as has been described with reference to FIGS. 14, 16 and 17.
  • a locking part 210 can also be provided in the form of pins, which are arranged on the end faces of the retaining strip 2 and enclose in associated recesses of the doctor blade 5, the recesses being provided so large that the free sliding movement of the doctor blade 5 in the retaining strip recess 30 is guaranteed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Coating Apparatus (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Glass Compositions (AREA)

Claims (38)

  1. Appareil racleur, comprenant une baguette de retenue et d'appui (2), présentant un évidement longitudinal (30), s'étendant longitudinalement sur toute la largeur de travail parallèlement à l'axe longitudinal de l'appareil racleur, et une baguette racleuse (5), pourvue d'un élément racleur (6), baguette insérée dans l'évidement longitudinal (30) aménagé dans la baguette de retenue, l'élément racleur (6) dépassant, sur toute la largeur de travail, de l'évidement longitudinal (30) de la baguette de retenue, et qui, sous l'effet de la force d'appui, travaille contre un élément (19), bidimensionnel, qui se déplace transversalement et relativement à l'élément racleur (6), cet élément pouvant être une feuille continue, un matériau bidimensionnel ou une autre structure bidimensionnelle telle qu'un cylindre ou une bande, appareil racleur dans lequel la baguette racleuse (5) est, sans assemblage ferme à la baguette de retenue (2), insérée dans l'évidement longitudinal (30) de la baguette de retenue ; la baguette racleuse (5) s'appuie, en élasticité de compression, le long du côté longitudinal supérieur (7) opposé à l'élément racleur (6), contre la surface de fond (4) de l'évidement longitudinal (30), et est guidée contre des surfaces latérales de l'évidement longitudinal (30) ; au moins la partie de la baguette racleuse qui s'étend dans l'évidement longitudinal (30) peut être déformée et déplacée, pour ce qui concerne chaque section transversale de la baguette racleuse, selon tous les degrés de liberté, perpendiculairement à l'axe longitudinal de la baguette racleuse ; et la baguette de retenue et d'appui (2), ainsi que la baguette racleuse (5), peuvent, dans tous les degrés de liberté, et perpendiculairement à l'axe longitudinal de l'appareil racleur, subir un déplacement de translation sans se coincer l'une l'autre, la translation étant au moins un peu lâche.
  2. Appareil racleur selon la revendication 1, caractérisé en ce que la baguette racleuse (5) et l'élément racleur (6) sont, pour ce qui concerne chaque section transversale, constitués d'un matériau pouvant subir une déformation élastique en flexion dans toutes les directions, perpendiculairement à l'étendue longitudinale, les forces de rappel, provoquées par la rigidité propre, de la baguette racleuse (5) étant inférieures à la plus petite des forces d'appui agissant sur la baguette racleuse (5).
  3. Appareil racleur selon la revendication 1 ou 2, caractérisé en ce que la baguette racleuse (5) est constituée, au moins dans la zone du côté longitudinal supérieur (7), d'un matériau à élasticité de compression, qui répartit uniformément sur toute l'étendue longitudinale les forces de compression dirigée transversalement à la surface de travail (19).
  4. Appareil racleur selon l'une des revendications 1 à 3, caractérisé en ce que la baguette racleuse (5) est, au moins dans la zone des côtés longitudinaux s'étendant latéralement dans l'évidement (30) constituée d'un matériau pouvant subir une déformation élastique de compression, qui répartit uniformément sur toute l'étendue longitudinale les forces de compression dirigées transversalement contre les côtés longitudinaux latéraux.
  5. Appareil racleur selon l'une des revendications 1 à 4, caractérisé en ce qu'on prévoit entre les surfaces latérales de l'évidement et la baguette racleuse (5) des couches ou éléments à élasticité de compression, qui répartissent d'une manière uniforme sur l'étendue longitudinale les forces de compression dirigées transversalement contre les côtés longitudinaux latéraux de la baguette racleuse.
  6. Appareil racleur selon l'une des revendications 1 à 5, caractérisé en ce que la partie de la baguette racleuse (5) qui s'étend dans l'évidement (30) destiné à la baguette de retenue est insérée dans un corps profilé (21), présentant une élasticité de compression transversalement à son étendue longitudinale, s'étendant sur toute la longueur de l'évidement, corps profilé qui répartit uniformément, sur toute l'étendue longitudinale, les forces de compression dirigées contre les côtés longitudinaux de la baguette racleuse (5) (Figures 22, 23).
  7. Appareil racleur selon l'une des revendications 1 à 6, caractérisé en ce que, dans l'évidement (30) destiné à la baguette de retenue, entre la baguette de retenue (2) et le côté longitudinal supérieur (7), opposé à l'élément racleur (6) de la baguette racleuse (5), est disposé au moins un élément à élasticité de compression, qui s'étend sur la longueur de l'évidement, élément qui répartit uniformément sur son étendue longitudinale les forces de compression exercées sur la baguette racleuse (5).
  8. Appareil racleur selon la revendication 7, caractérisé en ce que l'élément à élasticité de compression (8) est incorporé dans la baguette racleuse (5) (Figure 20).
  9. Appareil racleur selon la revendication 7 ou 8, caractérisé en ce que l'élément à élasticité de compression est un corps creux élastique, rempli d'un fluide sous pression, tel qu'une gaine souple.
  10. Appareil racleur selon l'une des revendications 1 à 9, caractérisé en ce que la baguette racleuse (5) présente une largeur de section transversale (38) plus petite que la largeur de l'évidement (39) destiné à la baguette de retenue, l'écart de largeur correspondant à une déformation de la baguette racleuse (5), provoquée par application d'une force d'appui, jusqu'à atteindre la largeur (39) de l'évidement (Figures 3 et 4).
  11. Appareil racleur selon l'une des revendications 7 à 10, caractérisé en ce que l'élément à élasticité de compression est un élément produisant une force d'appui (8).
  12. Appareil racleur selon l'une des revendications 1 à 11, caractérisé en ce que, au moins en partie entre les surfaces de l'évidement et la baguette racleuse (5), une garniture glissante ou un élément glissant (29, 290) est disposé de façon à s'étendre sur toute la longueur de l'évidement et parallèlement aux surfaces longitudinales de la baguette racleuse (5).
  13. Appareil racleur selon la revendication 12, caractérisé en ce qu'on prévoit, au moins le long de l'un des côtés latéraux de la baguette racleuse, une surface de glissement, qui est constituée sous forme d'une garniture glissante superficielle (290) de la baguette racleuse ou à l'aide d'un élément glissant (29) s'appuyant contre la baguette racleuse (5).
  14. Appareil racleur selon l'une des revendications 1 à 13, caractérisé en ce qu'on prévoit au moins partiellement contre les surfaces de l'évidement une surface glissante qui est constituée sous forme d'une garniture glissante superficielle (290) de la surface de l'évidement, ou encore à l'aide d'un élément glissant (29) s'appuyant contre les surfaces de l'évidement.
  15. Appareil racleur selon l'une des revendications 1 à 14, caractérisé en ce que l'évidement (30) destiné à la baguette de retenue a, en coupe transversale, la forme d'un rectangle, d'un U ou une forme circulaire, et que la section transversale de la baguette racleuse est au moins partiellement adaptée à la forme intérieure de l'évidement et s'étend en alignement avec cette dernière.
  16. Appareil racleur selon l'une des revendications 1 à 15, caractérisé en ce que l'évidement (30) destiné à la baguette racleuse est pourvu d'un élément de butée (9), pénétrant dans un renfoncement de la baguette racleuse (5), et qui retient d'une manière imperdable la baguette racleuse (5) dans l'évidement (30).
  17. Appareil racleur selon l'une des revendications 1 à 16, caractérisé en ce que l'élément racleur (6) comporte au moins une arête de travail, arrondie ou effilée.
  18. Appareil racleur selon l'une des revendications 1 à 17, caractérisé en ce que la baguette racleuse (5) est constituée d'une manière monobloc avec un élément racleur (6) qui lui est rapporté.
  19. Appareil racleur selon l'une des revendications 1 à 17, caractérisé en ce que la baguette racleuse est constituée d'au moins deux parties, avec au moins un élément racleur, en forme de baguette, de bande ou de barre ronde, rapporté à la partie de la baguette racleuse (5) (corps de baguette racleuse) insérée dans l'évidement (30), ou inséré dans cette partie, élément racleur qui, au moins approximativement, présente la même propriété de flexion dans toutes les directions que le corps de la baguette racleuse.
  20. Appareil racleur selon la revendication 19, caractérisé en ce que l'élément racleur (6) est constitué d'un élément en forme d'aiguille, tel qu'un rond en acier, ayant un diamètre d'environ 1 mm ou de seulement quelques millimètres.
  21. Appareil racleur selon la revendication 19 ou 20, caractérisé en ce que l'élément racleur (6) est prévu sous forme d'une racle tournante, disposée dans un évidement longitudinal de la baguette racleuse (5), avec une section transversale faible par rapport à la section transversale profilée du corps de la baguette racleuse.
  22. Appareil racleur selon la revendication 19, caractérisé en ce que l'élément racleur (6) est constitué d'un élément en bande bidimensionnelle, formant une lame d'enduction, tel qu'une tôle d'acier, une bande plastique ou analogues, auquel cas en particulier l'épaisseur de la lame n'est que de quelques dixièmes de millimètre, et que la partie dégagée en saillie de la lame n'a que quelques millimètres.
  23. Appareil racleur selon l'une des revendications 19 à 22, caractérisé en ce que l'élément racleur (6) est inséré dans la baguette racleuse (5) en subissant un mouvement de translation dans la direction transversale à la surface de travail (19).
  24. Appareil racleur selon l'une des revendications 1 à 19, caractérisé en ce que l'élément racleur (6), à l'état non chargé, dépasse, perpendiculairement à la surface de travail (19), de l'ouverture de l'évidement de la baguette de retenue et d'appui (2), et qu'il est constitué d'un matériau à élasticité de flexion de telle sorte que, lors d'un appui contre la surface de travail (19), et que, dans le cas d'une surface de travail (19) qui se déplace relativement à la baguette de retenue (2), il arrive, selon la direction du déplacement, jusqu'à une position de travail qui, quand on regarde dans la section transversale de la baguette, est incurvée ou coudée vers la direction perpendiculaire (Figure 18).
  25. Appareil racleur selon l'une des revendications 1 à 23, caractérisé en ce que l'évidement (30) destiné à la baguette de retenue s'étend d'une manière excentrée dans la baguette de retenue (2), perpendiculairement ou obliquement par rapport à la surface de travail (19) (Figure 19).
  26. Appareil racleur selon l'une des revendications 1 à 25, caractérisé en ce que la baguette racleuse (5) et éventuellement l'élément racleur (6) sont constitués d'un matériau plastique.
  27. Appareil racleur selon l'une des revendications 1 à 26, caractérisé en ce que la baguette de retenue (2) est maintenue de façon à pouvoir subir un mouvement libre transversalement à la surface de travail (19), en pouvant se déplacer en particulier dans le sens vertical, et/ou en pivotement autour d'un axe parallèle à son axe longitudinal.
  28. Appareil racleur selon la revendication 27, caractérisé en ce que la baguette de retenue (2) peut subir un déplacement libre transversalement à la surface de travail (19), moyennant un appui de glissement latéral, contre une poutre transversale (11, 12, 13, 14), fixe par rapport à la machine, d'une machine de traitement.
  29. Appareil racleur selon la revendication 27 ou 28, caractérisé en ce que la baguette de retenue (2) est pourvue d'un élément de retenue, tel qu'un bras (205) ou analogue, qui y est fermement rapporté, élément de retenue qui, avec un évasement rapporté (206), peut pénétrer, d'une manière pivotante et mobile transversalement à la surface de travail (19), dans un guide de coulisse (23) d'une machine de traitement, guide disposé au-dessus de l'appareil racleur (1), de façon que l'appareil racleur puisse basculer, en pouvant subir un pivotement libre, contre un appui lâche sur une installation de positionnement (811), qui s'appuie longitudinalement contre la baguette de retenue (2).
  30. Appareil racleur selon la revendication 27 ou 28, caractérisé en ce que Ta baguette de retenue (2) est logée contre un bras de retenue (221), par rapport auquel elle peut subir un déplacement libre transversalement à la surface de travail (19), et est maintenue contre lui d'une manière imperdable (Figure 23).
  31. Appareil racleur selon l'une des revendications 1 à 27, caractérisé en ce que la baguette de retenue (2) est liée fermement, en particulier par un assemblage vissé, latéralement à une poutre transversale d'une machine de traitement.
  32. Appareil racleur selon l'une des revendications 1 à 31, caractérisé en ce que la baguette de retenue (2) est prévue sous forme d'une baguette d'appui produisant sous l'effet de la gravité une force d'appui.
  33. Appareil racleur selon l'une des revendications 1 à 32, caractérisé en ce que la baguette de retenue (2) est au moins en partie constituée d'un matériau magnétisable, de façon à pouvoir subir une force magnétique, pour permettre une compression de la baguette racleuse (5) dans la direction allant vers la surface de travail (19), à partir d'une poutre ou d'une table d'électroaimant (20), disposée sur le côté de la surface de travail (19).
  34. Appareil racleur selon l'une des revendications 1 à 33, caractérisé en ce que la baguette de retenue (2) présente sur sa largeur de travail une rigidité propre élevée, qui empêche les fléchissements, en étant fixée en ses deux extrémités frontales (terminales).
  35. Appareil racleur selon l'une des revendications 1 à 33, caractérisé en ce que la baguette de retenue (2) est, pour réduire sa rigidité propre, pourvue d'entailles transversales, ou en ce qu'elle est, le long de son étendue, subdivisée en plusieurs segments profilés, qui sont reliés les uns aux autres par des organes de liaison élastiques, de préférence en un matériau élastomère.
  36. Appareil racleur selon l'une des revendications 1 à 35, caractérisé en ce que l'appareil racleur est un constituant d'un dispositif destiné à appliquer des substances (70), à l'aide d'un pochoir plat ou cylindrique, entre l'élément racleur (6) et une surface de traitement (19).
  37. Appareil racleur comportant au moins deux unités d'appareil racleur (110, 120, 130), formées d'appareils racleurs selon l'une des revendications 1 à 36, caractérisé en ce que les unités d'appareil racleur (110, 120, 130) sont disposées les unes à côté des autres, parallèlement à l'axe longitudinal de l'appareil racleur, sur toute la largeur de travail, pour travailler en commun contre une surface de travail (19).
  38. Appareil racleur selon la revendication 37, caractérisé en ce qu'entre les unités d'appareil racleur (110, 120, 130) est formé un espace ou une fente (26, 241) pour guider et recevoir la substance (70) telle qu'une encre d'imprimerie, une substance pour enduction ou des produits de revêtement analogues.
EP91250083A 1991-03-21 1991-03-21 Dispositif à racle Expired - Lifetime EP0504501B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91250083A EP0504501B1 (fr) 1991-03-21 1991-03-21 Dispositif à racle
DE59106731T DE59106731D1 (de) 1991-03-21 1991-03-21 Rakelgerät.
AT91250083T ATE129188T1 (de) 1991-03-21 1991-03-21 Rakelgerät.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91250083A EP0504501B1 (fr) 1991-03-21 1991-03-21 Dispositif à racle

Publications (2)

Publication Number Publication Date
EP0504501A1 EP0504501A1 (fr) 1992-09-23
EP0504501B1 true EP0504501B1 (fr) 1995-10-18

Family

ID=8208128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250083A Expired - Lifetime EP0504501B1 (fr) 1991-03-21 1991-03-21 Dispositif à racle

Country Status (3)

Country Link
EP (1) EP0504501B1 (fr)
AT (1) ATE129188T1 (fr)
DE (1) DE59106731D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3512193B2 (ja) 1994-12-27 2004-03-29 フォード モーター カンパニー 粘性材料を分配する方法および装置
DE29517098U1 (de) * 1995-10-17 1997-02-13 Zimmer, Johannes, Klagenfurt Auftragungsvorrichtung
AT412452B (de) * 2003-01-20 2005-03-25 Peter Zimmer Keg Einrichtung zum aufbringen von farbe
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
CN112647678B (zh) * 2020-12-10 2023-10-27 西洞庭凯兴建材有限公司 一种方便使用的腻子刮板及其使用方法
CN114919175A (zh) * 2022-04-30 2022-08-19 共享智能装备有限公司 铺粉装置及3d打印机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE836793C (de) * 1950-05-04 1952-04-17 Heinz Schroers Maschine zum Bedrucken von Textilgewebe
GB1134469A (en) * 1966-10-07 1968-11-27 Shigeru Inoue & Masamitsu Oki A method of printing a label on a 7 inch - 45 rpm disc record blank
DE1536985A1 (de) * 1966-10-14 1970-02-26 Knappstein Kg A Rakel fuer Siebdruckgeraete
AT296927B (de) * 1967-01-31 1972-03-10 Peter Zimmer Vorrichtung zum Auftragen von flüssigen oder pastösen Massen
DE1760393A1 (de) * 1967-05-26 1971-12-30 Zimmer Johannes Rakelvorrichtung
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
DE2110492A1 (de) * 1971-03-05 1972-09-07 Mitter & Co Streichrakel fuer Rund- und Flachschablonen
US3934502A (en) * 1973-01-24 1976-01-27 Morrison Machine Co. Adjustable rotary screen printer with air-biased squeegees
NL7311985A (en) * 1973-08-30 1975-03-04 Fdo Techn Adviseurs Rotary screen printing machine - with uniform doctor pressure by gas or liquid under pressure
AT361439B (de) * 1975-08-27 1981-03-10 Zimmer Johannes Magnetrakelvorrichtung
US4241691A (en) * 1978-08-30 1980-12-30 Monsanto Company Doctor blade holder
US4638733A (en) * 1984-01-20 1987-01-27 Horst Rebhan Squeegee head for printing of bodies by the screen printing method
WO1989003256A1 (fr) * 1987-10-10 1989-04-20 Johannes Zimmer Appareil a raclette
BR9004513A (pt) * 1989-01-09 1991-07-30 Johannes Zimmer Disposicao para a aplicacao de substancias a material em forma de tira

Also Published As

Publication number Publication date
DE59106731D1 (de) 1995-11-23
EP0504501A1 (fr) 1992-09-23
ATE129188T1 (de) 1995-11-15

Similar Documents

Publication Publication Date Title
EP0311743B1 (fr) Dispositif de raclage
DE2500764A1 (de) Schaberklinge
DE3313972C2 (fr)
EP0408704B2 (fr) Installation d'application de substances sur une bande de materiau
DE2555669C3 (de) Vorrichtung zum Abstreifen überschüssiger Streichmasse
EP0504501B1 (fr) Dispositif à racle
DE4334555C2 (de) Halterung für eine Rakelstange
DE1760393A1 (de) Rakelvorrichtung
WO1988009725A1 (fr) Appareil a racle tournante
AT406451B (de) Rakeleinrichtung
EP0406529A2 (fr) Dispositif d'enduction
EP0505020A1 (fr) Dispositif de raclage
DE9103571U1 (de) Rakelgerät
EP0311730A1 (fr) Dispositif de raclage
EP0530349B1 (fr) Dispositif a racle
DE3841116A1 (de) Rakelmesserhalter mit rakeldruckausgleich
DE4209566A1 (de) Rakelgeraet
WO1980002400A1 (fr) Dispositif utilisant une force de pression a effet magnetique
EP0422344B1 (fr) Dispositif de raclage
DE9112032U1 (de) Rakelgerät
AT392925B (de) Auftragungsmaschine bzw. -vorrichtung zum beschichten, impraegnieren oder bemustern von bahnenfoermigem material
WO1993009950A1 (fr) Dispositif d'encrage de cliches
DE8709029U1 (de) Einrichtung zum Auftragen einer Substanz auf eine Warenbahn
DE19627688A1 (de) Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE2237103C3 (de) Rakelvorrichtung für Rund schablonen von Rotationsfilmdruckmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI NL

17P Request for examination filed

Effective date: 19930320

17Q First examination report despatched

Effective date: 19941125

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19951018

Ref country code: FR

Effective date: 19951018

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19951018

Ref country code: GB

Effective date: 19951018

Ref country code: BE

Effective date: 19951018

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19951018

REF Corresponds to:

Ref document number: 129188

Country of ref document: AT

Date of ref document: 19951115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59106731

Country of ref document: DE

Date of ref document: 19951123

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960220

Year of fee payment: 6

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19951018

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19970331

Ref country code: CH

Effective date: 19970331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19990225

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000321

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090328

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001