EP0311745B1 - Dispositif d'enduction - Google Patents

Dispositif d'enduction Download PDF

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Publication number
EP0311745B1
EP0311745B1 EP88107938A EP88107938A EP0311745B1 EP 0311745 B1 EP0311745 B1 EP 0311745B1 EP 88107938 A EP88107938 A EP 88107938A EP 88107938 A EP88107938 A EP 88107938A EP 0311745 B1 EP0311745 B1 EP 0311745B1
Authority
EP
European Patent Office
Prior art keywords
segments
segment
pressing
application
doctor
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
EP88107938A
Other languages
German (de)
English (en)
Other versions
EP0311745A1 (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.)
ZIMMER, JOHANNES
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
Priority claimed from EP87730128A external-priority patent/EP0311730B1/fr
Priority claimed from DE8713789U external-priority patent/DE8713789U1/de
Priority claimed from EP87730126A external-priority patent/EP0311728B1/fr
Application filed by Individual filed Critical Individual
Priority to AT88107938T priority Critical patent/ATE85904T1/de
Publication of EP0311745A1 publication Critical patent/EP0311745A1/fr
Application granted granted Critical
Publication of EP0311745B1 publication Critical patent/EP0311745B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • B05C11/042—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades allowing local positioning, loading or deforming along the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/044—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for holding the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/045—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by the blades themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts
    • B41F15/084—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts simultaneously printing on two sides
    • 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 device for applying application material, such as possibly foamable substances of different viscosities, coating materials, lacquers, adhesives, pastes or the like. on a substrate such as a web of material with at least one pressing part which is continuous and flexible in the length of the device (application width) and which is provided for engaging in a substrate path and with pressing means arranged on the pressing part, wherein the pressing means are divided over the length of the application device into segments forming a pressing device, which are arranged in a link-like manner, and wherein the pressing part can be acted upon by the body mass of all segments of a certain pressing force.
  • application material such as possibly foamable substances of different viscosities, coating materials, lacquers, adhesives, pastes or the like.
  • Such an application device is used in machines for flat stencil printing, circular stencil applications and / or devices for stencilless full-area applications, the application width or the extent of the pressing part being able to be several meters.
  • sample applications printing
  • full-surface applications e.g. impregnation, coating, dyeing, painting
  • thin armature sheet metal parts are arranged as pressure segments on a doctor body.
  • the squeegee body is directly and firmly connected to leaf springs.
  • the magnitude of the contact pressure is essentially only determined by a magnetic bar arranged below a web.
  • the leaf springs must be designed to be resilient in a special adaptation to the squeegee body.
  • the connection of the doctor body with the leaf springs is relatively complex to manufacture.
  • the shape or choice of the squeegee body is restricted due to the necessary moldings for a firm connection to the leaf springs.
  • Solid squeegee strips pressure parts
  • a length of several meters are also used. Due to their inherent rigidity over the application width, these have a considerable curvature, which adversely affects the desired straightness of a squeegee strip for contact with a substrate such as a material web.
  • Mechanical pressing of such a squeegee strip requires complex squeegee holders with which contact forces are exerted on the ends of the squeegee strip. Clamping the squeegee between the brackets leads to undesirable deflection. It is also known to magnetically press solid strips and doctor or roller doctor blades made of magnetizable material against a magnetic bar arranged below the web.
  • the invention has for its object to provide an application device of relatively simple construction, wherein the design, shape and / or choice of the flexurally elastic contact part are to be largely independent of the segments serving for contact pressure and the size of a desired contact pressure can be essentially determined by the choice of the segments; moreover, to the extent largely independent of the size of the selected contact pressure, over large application widths of several meters and for various applications of uniform width, in particular also with very viscous substances, a large amount of bending and tension-free contact of the contact element with the substrate, in particular even with relatively small contact forces.
  • the application device is provided with holding means which are arranged directly on the segments and by means of which the segments are held so as to be movable in the direction of the substrate, the pressure part being attached to at least one over its length is arranged on the side of the substrate path segment.
  • the pressing part can be loaded with weight and / or magnetic force of all segments.
  • the invention is characterized in particular by the fact that, while avoiding the inherent rigidity of conventional elements extending over several meters, a pressing device can be implemented which has the desired, in particular also with a very large, effective mass for the pressing force or with a correspondingly large cross section the application width shows no disadvantageous deformation.
  • the segment-like structure of the pressing device ensures a limp characteristic over the entire application width, ie in the longitudinal direction of the device, with which in particular also in the case of relatively large ones Masses or cross sections an excellent adaptation and conformability of the segmented pressing device is achieved with the pressing part arranged on it and acted upon by it on the contact or support carrying or guiding the substrate.
  • the mass or cross section of the pressing part is relatively small in relation to the corresponding dimensions of the pressing device.
  • the contact part is made of flexible material which, even when subjected to relatively small contact forces, nestles against the substrate base / system.
  • a particular and very important advantage is that the pressing part in the form of a bar with a low cross-section, a coating blade or a thin coating rod with any desired coating profile can be produced without tension and is arranged on the pressing device.
  • the contact part is interchangeable and / or after a contact / squeegee edge has worn, it can be machined tension-free, for example by a suitable regrinding.
  • Suitable pressure / doctor profiles are not only those made of flexible, flexible metallic material, but also, for example, those made of plastic, glass, ceramic material or a material component of such materials.
  • a wide / cross-flexible application device is achieved in the length of the device, which ensures extremely satisfactory application results for a large range of contact forces and in particular for already relatively small contact forces, even for large application widths.
  • the application device in combination of the parts comprising it, has an extremely adaptable or, in the desired manner, material-elastic characteristic over the working width, its bending resistance being relatively low in comparison to the contact forces. Ie that cross sections of the pressing part and pressing device, the total elasticity module in the longitudinal direction and the working width are coordinated particularly favorably. This eliminates the intrinsic rigidity of the elements.
  • the invention is of particular importance when the segments are designed in the form of magnetizable parts or in the form of permanent and / or electric magnets which can be detected by means of magnetic force from a magnetic or magnetizable counter body arranged on the substrate path. Due to the design of the application device according to the invention, the dependencies of the contact pressure on a possibly magnetisable mass of the squeegee, on material stiffness and / or on the distance between magnetic force-generating and magnetisable device parts are eliminated in comparison to conventional squeegee devices, so that an extremely energy-saving method of operation also takes place . The segmentation also ensures that magnetic devices can be used in devices with relatively large application widths and for a wide variety of applications using all the advantages of magnetic pressure.
  • a special embodiment of the invention consists in that the segments are arranged one above the other or layered in the direction transverse to the application width and that at least one pressing part is arranged on the segment lying to the side of the substrate path.
  • the segments are designed, in particular, as thin, resiliently flexible rods lying one on top of the other in the longitudinal direction of the device, the number of which is provided according to the maximum desired contact pressure. Because of the wide, lamellar rod stratification, the pressing device has the desired bending slackness or elasticity in the longitudinal direction.
  • each segment forms a relatively short unit, by means of which the bending-elastic contact part is subjected to contact pressure. It is particularly advantageous to hold each segment in a bearing in which it is at least slightly movable transversely to the substrate path and possibly also along the substrate path.
  • Such storage is designed in a very simple manner by means of a swivel bearing and / or a clearance fit for the segment, the swivel bearing or clearance fit being arranged both on the pressing part and on a holder for the pressing part which can be pivotably articulated can.
  • the segmentation in the longitudinal direction of the device consists in that the segments are provided along an integrally formed profile strip, the profile strip being provided with notches or slots in a comb-like manner.
  • the notch or slot-free web profile carrying the segments forms on the side of the pressing device facing the substrate path a relatively thin rod-like or plate-like flexurally elastic part which extends over the application width.
  • a flexurally elastic pressing part can rest against this, or the latter can also be at least partially firmly connected to the web.
  • Yet another embodiment consists of designing the web profile itself as a flexurally elastic pressing or doctor part over the application width.
  • each segment body is arranged so as to be movable with respect to the latter, with a loose contact or abutment on or in the form of a press-on profile.
  • the segments are held against the coating profile with a pivot bearing arranged on the coating profile or on a coating profile holder and / or with a clearance fit rattle bearing.
  • a strip which is flexible over the application width can expediently be arranged, which together with the pressing part forms a combination component which is elastic and conformable over the longitudinal direction of the device.
  • a pressing part that is flexible and flexible over the application width in the form of e.g. a blade and round profile doctor blade can be very easily connected to a pre or metering doctor blade, which is also flexible over the application width, whereby doctor blade and pre / metering doctor blade can be provided in one piece or in two parts.
  • this or a flexible intermediate strip and / or a flexible pre-metering doctor blade strip can be very easily connected to the respective segments by means of a clamp, tongue / groove, plug or screw connection be.
  • the pressing device according to the invention which is built with segments, is universal in machines for the most varied Types of application or can be used for different printing press types.
  • the pressing device is particularly well suited not only for machines with horizontal, but also for those with downward and / or upward guided substrate webs in a version with magnetic pressure. It can be used to carry out stencil-free applications and stencil applications as required.
  • Also particularly advantageous is the combination of two pressing devices according to the invention in one application device for application on both sides of a substrate web, the application process being able to be carried out by doctoring or wiping with a doctor.
  • a particularly expedient application device is characterized in that the pressing device comprises segments lined up in the longitudinal direction (application width), these being designed as independent, relatively short-length bodies of a magnetic bar and each being pivotally mounted.
  • the application device further comprises a magnetizable contact or support, such as a steel table or a steel roller, against which the segmented magnetic bar forming the pressing device can be moved element by element, so that the pressing part or the pressing parts can be brought into contact with it.
  • a special embodiment consists in providing in the direction of extension of the segment magnetic bar a recess formed by pressing parts which extend in parallel and which forms a gap for an air knife which engages therein and is arranged on the magnetizable counter body.
  • Application devices according to the invention with the same, constructed and constructed in mirror image to the substrate path Pressure devices result in application devices which are very simple to construct and carry out applications on both sides.
  • Each pressing device 2 is designed with segments 20 and can be arranged on a substrate path 62, in which a substrate, such as a web 63 to be printed, lies or is guided, possibly using a printing blanket.
  • a substrate such as a web 63 to be printed
  • the pressing part 3 which is designed in the form of a flexible (flexible-elastic) squeegee extending over the application width 61, is provided to one between itself and the substrate web Form doctor blade or application gap.
  • a template for example a circular template 66, as indicated in FIGS.
  • the exemplary embodiments relate to application devices 1 with pressing devices 2, which press the respective pressing part 3 (doctor blade) under the action of magnetic force against the respective substrate 63 or against a counter body 5 guiding it. It is readily apparent that, for example, in application devices 1 with horizontally guided substrate webs and with pressing devices 2 arranged above them, the segments 20 can be designed as mass elements which can be attracted by gravity.
  • a device 1 according to FIG. 1 comprises a multi-part pressing device 2 which is divided over the application width 61 into one-piece bodies 21 to 24 forming segments 20. Gap spaces or surfaces 204 lie between adjacent segment bodies (e.g. 21, 22).
  • a doctor blade 32 forming the pressing part 3 is designed in the form of a thin, flexible rod and extends continuously over the application width 61 of the device. The doctor blade 32 is used as a spring element in grooves 38 on the sides of the segment bodies 21 to 24 facing the substrate path 62.
  • Segment bodies 21 to 24 in Fig. 2 consist of magnetizable material, so that they can be magnetically attracted to this by means of a magnetic bar 5. It can be seen that the volume, the effective magnetic mass or the cross section of each individual body determines the maximum size of the magnetic attraction. Although the magnetic mass can be relatively large over the application width 61, the pressing device 2 is designed to be flexible due to its limb-like structuring and conformable in its length. - The volume or the cross section of the doctor blades 32 have only a fraction of the corresponding Sizes of the segment bodies 21 to 24. It is thereby achieved that the application device 1 consisting of the pressing device 2 and the doctor blade 32 is designed to be flexible and conformable over the application width 61.
  • the pressing part 3 can have the most varied doctor blade profiles, and it can be produced as a rod-shaped thin part relatively easily and without tension. Such profiles are also very easy to grind or re-grind.
  • segments 21 to 24 arranged next to one another over the application width are formed as parts of a one-piece profile strip 201.
  • the segments 21 to 24 are formed by comb-like incisions, recesses or slots 202, wherein they are held in one piece on a web profile 203.
  • the cross section of the web profile 203 is small in relation to the cross sections of the segments 21 to 24.
  • the profile strip 201 consists at least partially of magnetizable material, so that it can be magnetically detected by a magnetic bar 51 extending in the application width.
  • a profile strip 201 having segments 20 is formed with a flexible web 203, on which a flexible circular doctor blade 31 is arranged, for example by means of a plug connection.
  • the pressing part 3 which e.g. can be profiled in a round or wedge shape with formation of a doctor blade edge, can be connected to the individual segments 20 by means of screw or plug connection 371 or 372.
  • screw or plug connection 371 or 372 Such arrangements of the pressing part 3 are shown by way of example in FIGS. 3 and 4.
  • the application device 1 comprises a holder in which the pressing device 2 comprising the segments 20 is held movable in the direction perpendicular to a counter body 5. It is particularly expedient to suspend the segments 21 to 24 in an oscillating manner, or to provide a pivot linkage by means of a pivot arm 42 which is fixedly arranged on a segment 20, as shown in FIG. 4.
  • a special design of the pressing device 2 according to the invention consists in that segments 25 to 28 forming a pressing device 2 are arranged one above the other in the direction transverse to the application width 61.
  • the segments 25 to 28 forming the stratification consist of relatively thin strips which are flexible in the longitudinal direction of the device. They can be connected to one another at the end by chain elements such as pins.
  • a pressing part 3 in the form of a circular doctor blade 32 is arranged on the segment 25 lying to the side of the substrate path 62, it being held at least at the end by means of a plug connection.
  • the segments 25 to 28 lying along one another over their length can be moved in a cage-like frame 29 transversely to the substrate web 63 or to a magnetic bar 51 forming the counter system 5 held.
  • a swivel arm 290 is provided on the frame 29 in the center of the application width.
  • the pressing device 2 with the squeegee 3 can be tilted out of a longitudinal position parallel to the substrate web 63, so that adaptation to possibly slightly inclined webs over the application width is very easy to accomplish.
  • a blind-like arrangement and suspension of the segments 25 to 28 can also be provided.
  • each segment 20 is held so that it can be pivoted about an axis parallel to the longitudinal axis of the device 1 by means of a swivel arm 41 arranged on the swivel arm 42.
  • the pivot bearing 41 is arranged on a holding part 40 for the doctor blade 32.
  • the holding part 40 is articulated on a holder 4 of the device via a swivel holder in the form of a hinge bearing 46. In this way it is achieved that the angle of attack of the doctor blade 32 relative to the web 63 can be changed due to the height adjustment of the holder 4. This is accomplished by means of a swivel bearing 11 of the application device 1 which hinges the holder 4.
  • each pivot bearing 41 of a segment 20 directly on the holder 4, as shown in dashed lines in FIG. 7.
  • the swivel arm 42 can be connected to the segment 20 by means of a clearance fit 47.
  • pivot bearing 41 according to FIG. 7 can be replaced by a pin bearing 43, with which the segment 20 is movably held against an axial head 48 in the play or rattle seat via a pin 44 connected to it.
  • FIG. 9 shows a further mounting of pressure elements 20 independently of the mounting of a sheet doctor blade 32.
  • the doctor blade 32 is held elastically on the holder 4, which is provided in the area of the doctor blade with a clearance 45 which is arranged on the side facing away from the substrate path 62.
  • the clearance fit 45 holds each segment 20 transversely and freely abuts the squeegee 32.
  • FIG. 10 shows an exemplary embodiment of the invention for a pressing device 2, which is divided over the application width 61 into segments 21 to 24 forming electromagnets.
  • the pressing device 2 is thus designed as a magnetic bar segmented over the application width 61.
  • a circular doctor blade 31 is arranged, for example by means of a continuous flexible profile 33, which can also be provided as a freely movable roller doctor blade in the receptacle of the profile.
  • the segmented magnetic bar pressing device 2 extends along a roller 52 which forms the application counter-system 5 and is made of magnetizable material. It can be seen that the pressing device with the piece-shaped magnetic bodies arranged in series can be retrofitted in a technically and economically very advantageous manner in existing systems comprising steel rollers, for example in paper or cardboard production, for finishing such substrates.
  • a segmented magnetic bar pressing device is in no way limited to horizontally guided substrates 63.
  • pivotably suspended or held magnetic bar pieces can be arranged as segments 20 according to FIG. 11 with individual transverse mobility against a substrate web 62 guided vertically on a roller 52.
  • the radius of the roller 52 is provided so large that the roller has a doctor blade function with a pointed-wedge-shaped substance space 64 against the substrate web 63.
  • the substrate web 63 can therefore also be coated on both sides.
  • a circular or roller doctor blade 3 is arranged in a recess in a pressure-elastic strip 392 arranged on the segments 20.
  • a blade or round profile of a pressing part 3 can be easily combined with a groove 38 extending over the application width by means of a groove 38 arranged on the side of the substrate path 62 on segments 20 or on their connecting web 203 flexible bar 39 can be arranged by clamping connection.
  • a doctor blade 32 is formed in one piece with a pre-doctor or metering profile 34, which extends elastically over the application width, to form a substance storage space 64.
  • FIG. 13 shows a circular doctor blade 31 arranged by means of tongue and groove clamping on a groove 38, a flexible wall part of the groove 38 being designed as a pre-doctoring / metering profile 34 which extends over the application width.
  • the counter abutment bodies 5 of the application device 1 are provided as magnetic bars 51 which extend over the application width.
  • the segments 20 of the pressing device 2 can be designed as magnetizable bodies or as permanent or electric magnets, the latter being arranged with opposite poles relative to the magnetic bar 51. 12 and 13 work against vertically guided substrate webs 63.
  • FIG. 14 shows an application device 1 with a pressing device 2 arranged on each side of a substrate path 62 for applying substance 67 to a substrate web 63 on both sides.
  • the pressing devices 2 are arranged and formed symmetrically with respect to the substrate path 62 or with the substrate web 63.
  • Press-on parts 3 designed as sheet-shaped doctor blades 32 form a pointed-wedge-shaped substance space through which the substrate web 63 is guided in the center.
  • the doctor blades 32 can be moved in the direction of the substrate web 63 by means of the mutually arranged pressing devices 2 loosely abutting them, the pressing devices 2 being each slidably mounted in a holding part 40 having a clearance fit 45.
  • the storage corresponds to that of the exemplary embodiment according to FIG. 9.
  • Each pressing device 2 comprises a row of segments 20 arranged over the application width, which are each provided as permanent magnets.
  • the magnetic The polarity of mutually opposite permanent magnet segments on the substrate path 62 is provided such that they magnetically attract one another.
  • electromagnet segments are arranged instead of permanent magnet segments.
  • a pair of mutually attracting segments 20 can comprise a magnet on one side of the substrate path 62 and a body made of magnetizable, magnetically attractable material on the other side.
  • the squeegee holders 4 are arranged independently and separately from the holding parts 40 for the segments 20.
  • An application device 1 according to FIG. 15, like the device described with reference to FIG. 14, comprises two pressing devices 2 arranged alternately on a substrate path 62, each with segments 20, which lie loosely on sheet doctor blades 32 and form magnetic segment-pressing pairs.
  • doctor blade 32 and clearance fit 45 are each provided on a common holder 4, which can be pivoted about an axis parallel to the longitudinal direction of the device 1 by means of a bearing 11.
  • the segmented pressing device 2 with doctor blade 3 and holder 4 can each be arranged within a circular template 66.
  • a pressing device 2 with electromagnet segments 20 arranged alongside one another along the width of the application, each of which is articulated by an arm 42 or a pivot bearing 41.
  • a pressing device 2 according to the invention is also provided, which comprises segments 20 arranged next to one another over the application width, each of which is made of magnetizable Material or consist of a permanent magnet.
  • Each of these segments 20 can be held, for example, by means of an arm 42 in the direction 65 of the substrate path 62 and / or movable transversely thereto.
  • the application device 1 comprises an air knife arrangement provided on the substrate path 62.
  • two continuous flexible pressure parts 36 are arranged on one, namely the segmented electromagnet pressing device 2, which leave a recess 35 between them.
  • An air knife 30 with a pointed or round working edge engages in this.
  • the air knife 30 is arranged as a flexurally elastic pressing part 3 extending over the application width on the other segmented pressing device 2.
  • one of the two pressing devices 2 can also be replaced by a magnetizable counter body 5, which then has a doctor blade recess or doctor blade designed in accordance with FIG. 16.
  • an application device 1 comprises a pressing device 2, optionally arranged in a circular template 66, with segments 20 arranged next to one another in the application width. As in the exemplary embodiment according to FIG. 9, these are held and lie in a clearance fit 45 in the direction of the substrate path 62 loosely on a sheet-doctor blade 32 forming the pressing part 3. These and the clearance fit 45 are arranged on a common holder 4 which is held so as to be pivotable about an axis parallel to the longitudinal direction of the device 1 by means of a holder 11.
  • a pressure surface of a counter body 5 is provided which extends across the application width and against which the doctor blade 32 acts between the counter body 5 under the action of magnetic force and the segments 20 operates.
  • the segments 20 are each designed as permanent magnets, while the counter body consists of magnetizable material. This can optionally be articulated via a holder 53 in the direction of the substrate path 62 and / or movable transversely thereto.

Claims (27)

  1. Dispositif (1) pour appliquer un matériau, tel par exemple que des substances expansibles (67) ayant différentes viscosités, des matières de revêtement, des peintures et vernis, des adhésifs, des pâtes ou analogues, sur un substrat (63) tel par exemple qu'une bande de matière, à l'aide d'une pièce de pression (3), conçue d'une manière continue et élastique en flexion sur la longueur du dispositif (1) (largeur d'application) et prévu pour entrer en contact avec une trajectoire du substrat, et comportant des organes de pression disposés contre la pièce de pression (3), les organes de pression (2) étant répartis sur la longueur du dispositif d'application (1), dans des segments (20) formant un dispositif de pression (2), segments disposés en rangées les uns contre les autres comme des chaînons, la pièce de pression (3) pouvant recevoir une force de pression définie par la masse de l'ensemble des segments (20), caractérisé en ce que le dispositif d'application (1) est pourvu d'organes de retenue (29, 4, 40-48), directement disposés contre les segments (20), organes à l'aide desquels les segments (20) sont maintenus mobiles dans la direction du substrat (63).
  2. Dispositif selon la revendication 1, caractérisé en ce que les segments en chaînons (20) du dispositif de pression (2) sont prévus comme des pièces formant des masselottes.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les segments en chaînons (20) du dispositif de pression (2) sont conçus comme des pièces magnétisables, des aimants permanents et/ou des électroaimants, qui peuvent être saisis au moyen de la force magnétique provenant d'un contre-élément, magnétique ou magnétisable, disposé sur la trajectoire de substrat (62).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'une baguette (39), élastique en flexion et/ou en compression, est disposée entre le segment (20) et la pièce de pression (3).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la pièce de pression (3) est conçue comme une racle profilée en forme de barre,par exemple une racle ronde (31) ou une racle à enduire (32).
  6. Dispositif selon la revendication 5, caractérisé en ce que la racle (31, 32) est, avec une surface profilée (34) servant au raclage préalable, disposée contre le ou les segments (20) disposés sur le côté de la trajectoire du substrat (62).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que la pièce de pression (3) est conçue comme une racle magnétisable à rouleau, qui est maintenue en roulement libre dans au moins un évidement, prévu contre au moins un segment (20) ou contre une baguette (39) élastique en flexion et/ou en compression.
  8. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le long de la largeur d'application (61), contre au moins un segment (20), est disposé un logement (35) dont les bords forment deux pièces de pression (36), continues et parallèles l'une à l'autre.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que les segments (25 à 28) sont disposés,dans la direction transversale à la largeur d'application (61), en rangées ou en couches disposées ellesmêmes les unes sur les autres, et qu'au moins une pièce de pression (3) est disposée contre le segment (25) luimême disposé vers le côté de la trajectoire du substrat (62).
  10. Dispositif selon la revendication 9, caractérisé en ce que le dispositif de pression (2) comporte une cage ou un cadre (29), dans lequel les segments (25 à 28) sont disposés de façon à pouvoir se déplacer.
  11. Dispositif selon la revendication 10, caractérisé en ce qu'un élément articulé en pivotement (290) est disposé contre le cadre (29) au milieu de la largeur d'application (61).
  12. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que les segments (21 à 24) sont disposés le long de la largeur d'application (61) en rangées contiguës.
  13. Dispositif selon la revendication 12, caractérisé en ce que le dispositif d'application (1) comporte un support (4) lequel est articulé à chacun des segments (21 à 24) de façon à pouvoir se déplacer transversalement à la largeur d'application (61).
  14. Dispositif selon la revendication 13, caractérisé en ce que le support (4) comporte un palier pivotant (41), à l'aide duquel le segment (21 à 24) est articulé par l'intermédiaire d'un bras pivotant (42).
  15. Dispositif selon la revendication 13, caractérisé en ce que le support (4) comporte un palier à tourillon (43), à l'aide duquel le segment (21 à 24) est, par l'intermédiaire d'un tourillon (44) disposé contre le segment, articulé ou à rabattement.
  16. Dispositif selon l'une des revendications 13 à 15, caractérisé en ce que le support (4) comporte un ajustement (45) avec jeu, dans lequel le segment (21 à 24) est maintenu de façon à pouvoir bouger.
  17. Dispositif selon l'une des revendications 12 à 16, caractérisé en ce que les segments (21 à 24) sont prévus le long d'une baguette profilée (201) formée d'une manière monobloc, la baguette profilée étant pourvue, selon une configuration en peigne, d'entailles ou de fentes (202).
  18. Dispositif selon la revendication 17, caractérisé en ce que le profil d'entretoise (203) portant les segments, et ne comportant ni entailles, ni fentes, forme la pièce de pression (3), continue, élastique en flexion.
  19. Dispositif selon l'une des revendications 12 à 16, caractérisé en ce que chaque segment (20) est conçu comme un organe monobloc.
  20. Dispositif selon l'une des revendications 1 à 19, caractérisé en ce que la pièce de pression (3) est, à l'aide d'une liaison par serrage, enfichable ou vissée (37), reliée aux éléments de segment (20), éventuellement par l'intermédiaire d'une baguette élastique en flexion (39).
  21. Dispositif selon la revendication 19, caractérisé en ce que la pièce de pression (3) est conçue comme une racle à enduire (32) continue (non interrompue) sur la largeur d'application (61), et que chaque élément de segment (20) est disposé, en appui lâche, sur la racle à enduire de façon à pouvoir se déplacer par rapport à cette dernière.
  22. Dispositif selon la revendication 9, caractérisé en ce que le dispositif d'application (1) comporte un palier pivotant (46) assurant l'articulation de la racle à enduire (32).
  23. Dispositif selon la revendication 21 ou 22, caractérisé en ce que chaque élément de segment (20) est dégagé, avec un évidement, de façon que l'extrémité libre de la racle puisse se déplacer dans l'évidement.
  24. Dispositif selon l'une des revendications 1 à 23, caractérisé en ce que le dispositif d'application (1) comprend au moins un appui (11, 41),assurant l'articulation, avec possibilité de déplacement et/ou de pivotement, d'un support (4, 40) destiné aux segments (20) et/ou à la pièce de pression (3).
  25. Dispositif selon la revendication 3, caractérisé en ce qu'il comprend une barre magnétique (51) formant un contre-élément (5).
  26. Dispositif selon la revendication 3, caractérisé en ce qu'il comprend un rouleau fixe ou tournant (52), formant un contre-élément (5), en un matériau magnétisable, et que les segments (20) sont conçus comme des aimants permanents et/ou des électro-aimants.
  27. Dispositif selon la revendication 3, caractérisé en ce qu'il comprend sur chacun des deux côtés de la trajectoire de substrat (62) un dispositif de pression (2), les deux pièces de pression (3), disposées contre des segments à effet magnétique et opposés l'un à l'autre, peuvent, lors de la saisie magnétique réciproque des segments prévus en position alternée, se déplacer transversalement par rapport à la trajectoire de substrat (62) et transversalement l'une par rapport à l'autre.
EP88107938A 1987-10-10 1988-05-18 Dispositif d'enduction Expired - Lifetime EP0311745B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107938T ATE85904T1 (de) 1987-10-10 1988-05-18 Auftragungsvorrichtung.

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
DE8713789U 1987-10-10
DE8713788U 1987-10-10
EP87730128A EP0311730B1 (fr) 1987-10-10 1987-10-10 Dispositif de raclage
EP87730128 1987-10-10
DE8713789U DE8713789U1 (fr) 1987-10-10 1987-10-10
EP87730126A EP0311728B1 (fr) 1987-10-10 1987-10-10 Dispositif de raclage
DE19873734747 DE3734747A1 (de) 1987-10-10 1987-10-10 Rakelvorrichtung
EP87730126 1987-10-10
DE3734747 1987-10-10
DE8713788U DE8713788U1 (fr) 1987-10-10 1987-10-10

Publications (2)

Publication Number Publication Date
EP0311745A1 EP0311745A1 (fr) 1989-04-19
EP0311745B1 true EP0311745B1 (fr) 1993-02-24

Family

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Family Applications (3)

Application Number Title Priority Date Filing Date
EP88107936A Expired - Lifetime EP0311743B1 (fr) 1987-10-10 1988-05-18 Dispositif de raclage
EP88107938A Expired - Lifetime EP0311745B1 (fr) 1987-10-10 1988-05-18 Dispositif d'enduction
EP88107937A Expired - Lifetime EP0311744B1 (fr) 1987-10-10 1988-05-18 Dispositif d'enduction

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP88107936A Expired - Lifetime EP0311743B1 (fr) 1987-10-10 1988-05-18 Dispositif de raclage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88107937A Expired - Lifetime EP0311744B1 (fr) 1987-10-10 1988-05-18 Dispositif d'enduction

Country Status (10)

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US (6) US5134958A (fr)
EP (3) EP0311743B1 (fr)
JP (4) JPH03501822A (fr)
AT (3) ATE80067T1 (fr)
AU (4) AU1722188A (fr)
BR (4) BR8807742A (fr)
DE (3) DE3878630D1 (fr)
ES (3) ES2035150T3 (fr)
HU (4) HU207004B (fr)
WO (4) WO1989003256A1 (fr)

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HUT52998A (en) 1990-09-28
HU213082B (en) 1997-02-28
JPH03501823A (ja) 1991-04-25
BR8807240A (pt) 1990-03-01
AU1722188A (en) 1989-05-02
WO1989003256A1 (fr) 1989-04-20
EP0311745A1 (fr) 1989-04-19
EP0311743B1 (fr) 1991-12-04
US5156682A (en) 1992-10-20
ES2035150T3 (es) 1993-04-16
JPH02502797A (ja) 1990-09-06
DE3879354D1 (de) 1993-04-22
EP0311744B1 (fr) 1992-09-02
HU883948D0 (en) 1990-11-28
US5063873A (en) 1991-11-12
ES2040775T3 (es) 1993-11-01
EP0311744A1 (fr) 1989-04-19
WO1989003257A1 (fr) 1989-04-20
JPH02501540A (ja) 1990-05-31
BR8807742A (pt) 1990-08-07
DE3874274D1 (de) 1992-10-08
DE3878630D1 (de) 1993-04-01
HU207469B (en) 1993-04-28
HU883513D0 (en) 1990-11-28
ATE80067T1 (de) 1992-09-15
US4993352A (en) 1991-02-19
ATE69981T1 (de) 1991-12-15
HUT60168A (en) 1992-08-28
AU1781488A (en) 1989-05-02
ES2028938T3 (es) 1992-07-16
HU883421D0 (en) 1990-07-28
HU883933D0 (en) 1990-09-28
WO1989003259A1 (fr) 1989-04-20
EP0311743A1 (fr) 1989-04-19
BR8807241A (pt) 1989-10-31
HU207004B (en) 1993-03-01
ATE85904T1 (de) 1993-03-15
HUT60167A (en) 1992-08-28
US4998500A (en) 1991-03-12
BR8807750A (pt) 1990-10-09
US4920914A (en) 1990-05-01
HUT53308A (en) 1990-10-28
HU209375B (en) 1994-05-30
AU1931188A (en) 1989-05-02
US5134958A (en) 1992-08-04
JPH03501822A (ja) 1991-04-25
AU1790188A (en) 1989-05-02
WO1989003258A1 (fr) 1989-04-20

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