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WO1996007790A1 - Mecanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pate sur une bande de materiau en mouvement - Google Patents

Mecanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pate sur une bande de materiau en mouvement Download PDF

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Publication number
WO1996007790A1
WO1996007790A1 PCT/EP1995/003444 EP9503444W WO9607790A1 WO 1996007790 A1 WO1996007790 A1 WO 1996007790A1 EP 9503444 W EP9503444 W EP 9503444W WO 9607790 A1 WO9607790 A1 WO 9607790A1
Authority
WO
WIPO (PCT)
Prior art keywords
elements
application
jet nozzle
applicator according
liquid
Prior art date
Application number
PCT/EP1995/003444
Other languages
German (de)
English (en)
Inventor
Stefan Reich
Richard Bernert
Martin Kustermann
Manfred Ueberschaer
Eckard Wozny
Original Assignee
Voith Sulzer Papiermaschinen Gmbh
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 DE19944432180 external-priority patent/DE4432180A1/de
Priority claimed from DE19944432179 external-priority patent/DE4432179C1/de
Priority claimed from DE19944432178 external-priority patent/DE4432178A1/de
Application filed by Voith Sulzer Papiermaschinen Gmbh filed Critical Voith Sulzer Papiermaschinen Gmbh
Priority to JP8509185A priority Critical patent/JPH09506294A/ja
Priority to AT95931968T priority patent/ATE201466T1/de
Priority to DE59509286T priority patent/DE59509286D1/de
Priority to EP95931968A priority patent/EP0728241B1/fr
Priority to US08/640,905 priority patent/US5772766A/en
Publication of WO1996007790A1 publication Critical patent/WO1996007790A1/fr
Priority to FI961910A priority patent/FI106967B/fi

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0283—Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/34—Knife or blade type coaters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • 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

Definitions

  • the invention relates to applicators for the direct or indirect application of a liquid or pasty medium to a running web of material according to the preambles of the independent claims 1, 12 and 20.
  • a conventional application unit with a free jet metering gap is, for example, in the Canadian one Z patent application CA-A-2, 101, 358.
  • Such an application unit with a free jet nozzle is relatively uncomplicated to use, it has no real wear parts and is therefore relatively easy to maintain. It is only for throughput speeds up to approx. 1500 m / min. suitable, but has a low tear frequency and is particularly suitable for sensitive, ie thin papers.
  • the invention is therefore based on the technical problem of creating a new type of commission that can be converted quickly and easily.
  • This basic assembly includes the support beam including the distribution devices for the liquid or pasty medium, the connection and adjustment devices necessary for these aforementioned elements, as well as the front and rear walls for forming the supply gap including the supply channels for the liquid or pasty medium from the distribution devices in the Feed gap.
  • the elements which directly serve the application of the liquid or pasty medium can be attached to the previously explained basic assembly.
  • These elements which directly serve the application of the medium are, on the one hand, add-on elements for forming an application chamber, for example a doctor blade carrier with a doctor element and a baffle, and on the other hand add-on elements which delimit a metering gap which acts as a free jet nozzle between them.
  • the basic assembly thus serves as a platform on which either the add-on elements for forming an application chamber or the add-on elements for forming a free-jet nozzle metering gap can be attached in a modular manner. Building on the The basic assembly can alternatively be used for the application chamber variant or the free jet nozzle variant for the application unit.
  • the add-on elements belonging to the application chamber variant and the add-on elements belonging to the free jet nozzle variant can each be installed as a finished module and exchanged for one another, or they can each be mounted in the form of individual add-on elements.
  • Such a common add-on element which, for example, forms part of the free jet nozzle metering gap in one design variant and part of the application chamber in the other variant, can also be firmly connected to the basic assembly and, if appropriate, be formed in one piece with it.
  • the elements serving in the second application unit variant directly for the application of the liquid or pasty medium can be placed on an application unit that is already functional in the first application unit variant.
  • a functional application unit consisting of a base assembly and an application chamber arrangement or a base unit and a free jet nozzle arrangement, is used as a basis, which can be converted into the other application unit variant in that the other variant directly serves the application of the liquid or pasty medium Elements can also be added to the given order. So if an order is based on a
  • the application chamber with a doctor blade carrier and a baffle bar, for example, lip elements are attached to the doctor blade carrier and the baffle bar, in order to form a metering gap which acts as a free jet nozzle.
  • the elements directly serving the application of the liquid or pasty medium in an application chamber application are applied to the area of the free jet nozzle arrangement in an analogous manner to the case described above.
  • the free-jet nozzle metering gap is formed by two lip elements, an add-on element with a squeegee carrier and a squeegee element and an add-on element for forming a baffle bar, for example, are attached to it in order to obtain an application chamber.
  • the basic assembly and the elements of the one underlying application unit variant that directly serve the application of the liquid or pasty medium are retained in each conversion variant.
  • the conversion to the second application unit variant is carried out by attaching the elements that directly serve the application of the liquid or pasty medium in the second variant, the conversion back to the first variant is carried out by removing these elements.
  • the application chamber arrangement or free jet nozzle arrangement belonging to the respective basic application unit can either be completely detachable from the base assembly or at least partially connected in one piece. Only one is required initially berry Detachability of the add-on elements that determine the additional work unit variant placed on the basic application unit.
  • the add-on elements for realizing an application chamber arrangement or a free jet nozzle arrangement can be designed in such a way that when changing from one variant to the other, there is a change in the direction of rotation of the associated counter or application roller.
  • the add-on elements can also be designed in such a way that the rotation direction of the associated roller, which acts as a counter roller for the continuous material web when directly applied and as an application roller when indirectly applied, can be maintained in both conversion variants.
  • An embodiment of the add-on elements such that the application direction changes with respect to the assigned roller and thus the direction of rotation of the roller can, however, be advantageous insofar as the operating devices, ie in particular the adjusting devices for the application devices directly serving the application of the liquid or pasty medium, that is to say, for example, metering gap. or doctor blade adjustment devices, in both Order variants can be retained on the same operating side of the coating machine.
  • the attachment elements for the application chamber or the free-jet nozzle metering gap are formed in one or more parts.
  • a common add-on element it may be expedient for a common add-on element to be designed in such a way that it can be used in the same add-on position both when attaching the application chamber and when attaching the free jet metering gap.
  • Such a common add-on element can be detachably connected to the base assembly, but it can also be connected fixedly or even in one piece to the base assembly. If such a common add-on element can be designed, the number of add-on elements that have to be converted from one to the other application unit variant is reduced accordingly, and the conversion is thus carried out more easily and quickly.
  • the attachment elements for forming the application chamber expediently comprise a doctor blade carrier with a doctor element and a baffle bar.
  • the add-on elements for forming an application chamber expediently comprise an overflow device in the region of the baffle bar.
  • the overflow device preferably has an excess collection and discharge device which adjoins an overflow surface.
  • the add-on elements for a free-jet nozzle metering gap expediently have essentially a strip-like or lip-like shape.
  • the add-on elements for a free jet metering gap are designed in such a way that a concave free deflection surface for the liquid or pasty medium adjoins the free end of the metering gap, which is delimited on both sides by wall surfaces.
  • the free jet of the liquid or pasty medium can advantageously be directed in a desired direction by such a free deflecting or guiding surface.
  • Another expedient embodiment of the invention consists in designing the add-on elements for forming the free jet metering gap in such a way that the metering gap encloses approximately a right angle with the supply gap for the liquid or pasty medium.
  • the front and rear walls of the base assembly which are also referred to as the outer and inner walls, can be designed in a wide variety of ways. However, it is advantageous to design the areas of the front and rear walls in such a way that the corresponding attachment elements can be easily and precisely placed and attached. In the event that add-on elements are to be placed on removable parts in the area of the front and rear walls, it may be expedient to form such parts in one piece with parts in the area of the front and rear walls. In other words, according to the invention, the parting plane between the base assembly and the elements attached to it to form an application chamber arrangement or a free jet nozzle arrangement can also run within the front and rear wall regions. Parts of the front or rear wall as well as the area adjacent to it can also be assigned to the add-on elements, and can thus be exchanged from one variant to the other during the conversion. 3
  • the parting plane between the basic assembly and the add-on elements for forming the application chamber arrangement or the free jet nozzle arrangement can be such that components which are placed on the area of the front and / or rear wall or are continued there in one piece are always retained during the conversion and thus the basic assembly are attributable.
  • a section adjoining the rear wall area or an element placed there can be retained for both conversion variants by forming part of the free jet nozzle metering gap and part of the application chamber.
  • Such configurations in which areas of the front and / or rear wall as well as adjoining partial areas are formed by the add-on elements and are removed or installed with them, also belong to the solution according to the invention. Also, such configurations belong to the solution according to the invention 1, in which partial areas extending beyond the area of the front and rear walls or elements attached to them remain in place during the conversion, in which case the basic assembly is expanded beyond the front and rear wall areas.
  • the application unit is expediently provided with an infeed and / or tilting device, so that changes in distance resulting from the attachment of the different attachment elements for the two application unit variants in relation to the associated counter or application roller can be compensated for and the angular position of the application chamber arrangement or Free jet nozzle arrangement with respect to the counter or applicator roller can be adjusted precisely according to the circumstances.
  • AD infeed and / or tilting device
  • the lip elements forming the free jet nozzle are either fixed, optionally in one piece, or at least partially detachably connected to the region of the front and rear walls of the basic assembly.
  • the attachment elements for forming an order chamber are designed in one or more parts.
  • the add-on elements for forming the application chamber preferably comprise a doctor blade carrier with a doctor element and a baffle bar.
  • an overflow device is formed in the area of the baffle bar.
  • the overflow device expediently has an excess collection and discharge device which adjoins an overflow surface.
  • Another embodiment is to design the doctor blade carrier in several parts.
  • the application unit is preferably equipped with a delivery and / or tilting device.
  • the delivery device enables a spatial displacement of the application work, while the tilting device enables a change in the angular position of the application work.
  • changes in the distance to the counter or application roller can be compensated for, which result from the different attachment elements during the conversion from one to the other application unit variant.
  • the angular position of the application chamber arrangement or the free jet nozzle arrangement can be set precisely according to the respective circumstances.
  • the elements forming the application chamber are fixed, optionally in one piece or at least partially detachably connected to the region of the front and rear walls.
  • the add-on elements for forming the free-jet nozzle metering gap are essentially strip-shaped or lip-shaped. It is particularly advantageous if the add-on elements for forming the free jet metering gap are designed in such a way that a free concave deflecting surface adjoins the free end of the metering gap, which is delimited on both sides by wall surfaces. With such a concave deflecting or guiding surface, the free jet of the liquid or pasty medium can be directed in a desired direction.
  • the add-on elements for forming the free jet metering gap are each formed in one or more parts.
  • the application unit is preferably equipped with an infeed and / or tilting device in order to be able to make adjustments to the distance of the application unit to the counter or application roller and to adapt the angular position of the application unit with respect to the counter or application roller for both conversion variants.
  • Such adjustments are due, on the one hand, to the different structural dimensions of the add-on elements in both variants and to the different functional principle when applying the liquid or pasty medium via an application chamber or a free-jet nozzle.
  • the attachment of the add-on elements can of course be done in a variety of ways and depends on the respective structural conditions.
  • the structural design of the add-on elements also depends on the respective application.
  • Fig. 1 shows schematically a first embodiment of an application work according to the invention with a base assembly and attached elements to form an application device in the form of an application chamber;
  • FIG. 2 schematically shows the first exemplary embodiment of the application unit according to the invention with the base assembly according to FIG. 1 and add-on elements mounted thereon to form an application device in the form of a free jet nozzle;
  • Fig. 3 shows schematically a second embodiment of the application unit according to the invention with a base assembly and add-on elements mounted thereon to form an application device in the form of an application chamber;
  • FIG. 4 shows schematically the second exemplary embodiment of the application unit according to the invention with the basic assembly according to FIG. 3 and attachment elements mounted thereon to form an application device in the form of a free jet nozzle;
  • Fig. 5 shows schematically a third embodiment of the application unit according to the invention with a basic assembly and add-on elements mounted thereon to form an application device in the form of an application chamber; Old
  • FIG. 6 shows the third exemplary embodiment of the application unit according to the invention with the basic assembly according to FIG. 5 and attachment elements mounted thereon to form an application device in the form of a free jet nozzle;
  • Fig. 7 shows schematically a fourth embodiment of the application unit according to the invention with a base assembly and add-on elements mounted thereon to form an application device in the form of a free jet nozzle;
  • FIG. 8 shows the fourth exemplary embodiment of the application unit according to the invention with the basic assembly according to FIG. 7 and attachment elements mounted thereon to form an application device in the form of an application chamber;
  • Fig. 9 shows schematically a fifth embodiment of the application unit according to the invention, which is provided in its basic structure with an application device in the form of a free jet nozzle and carries add-on elements mounted thereon to form an application device in the form of an application chamber;
  • FIG. 10 schematically shows a sixth embodiment of the application unit according to the invention with an application device in the form of an application chamber;
  • FIG. 11 shows the sixth exemplary embodiment of the application unit according to the invention with the basic structure according to FIG. 10 and attachment elements mounted thereon to form an application device in the form of a free jet nozzle.
  • liquid or pasty medium For the direct or indirect application of a liquid or pasty medium to a running material web, such as paper or cardboard, application units are used in a known manner.
  • the liquid or pasty medium is applied by the application unit in a predetermined layer thickness to the surface of a roller 1, which transfers the layer to the running material web in a subsequent operation (not shown).
  • the running material web is guided over the surface of the roller 1 and the liquid or pasty medium is applied directly to the running material web in the desired layer thickness.
  • the running direction of the material web or roller surface is identified in FIGS. 1 and 2 by the reference number 2.
  • the first exemplary embodiment of the application unit according to the invention shown in FIGS. 1 and 2 in two different conversion variants has a basic assembly common to both conversion variants, which is described in detail below and the components of which are largely hatched in the figures.
  • the basic assembly each comprises a support beam 3, which carries the individual elements of the application and comprises a distribution pipe 4, through which the liquid or pasty medium is supplied.
  • the support beam 3 has on its upper side an inclined and approximately tangential to the roller 1 rear wall 5, which merges in the region of its lower end in bearing webs 6 for journal 7.
  • Front wall webs 8 are mounted on the journal 7 and are fastened to a front wall 9, which are spaced apart and approximately ⁇ 6 runs parallel to the top of the rear wall 5 of the support beam 3.
  • the front wall 9 is also referred to as the outer wall, and the rear wall 5 and the wall regions adjoining it are also referred to as the inner wall.
  • a feed gap 10 is formed, which is connected to the interior of the distribution pipe 4 via a number of feed channels 11 which penetrate the rear wall 5. Liquid or pasty medium supplied via the distribution pipe 4 can therefore be fed into the feed gap 10 via the feed channels 11, as is indicated by arrows.
  • the structure of the basic assembly described above is known in principle.
  • the special feature according to the invention is that the areas of the front wall 9 and the rear wall 5 for the detachable attachment of add-on elements either to form an application device in the form of an application chamber (see FIG. 1) or to form an application device in the form of a free jet nozzle (see FIG Fig. 2) are set up.
  • the attachment elements for forming the application chamber (Fig. 1) or the free jet nozzle (Fig. 2) are only shown in outline for a better overview, in contrast to the hatched components of the basic assembly.
  • the fastening elements for the add-on elements can be designed in a wide variety of ways and are therefore only indicated with dash-dotted lines in FIGS. 1 and 2.
  • the attachment elements for forming the application chamber 12 comprise an attachment doctor carrier 13 with a doctor element 14 in the form of a doctor bar.
  • doctor blade carrier 13 is equipped with an adjusting device 15, which is placed on a doctor blade bed 16 acts with which the squeegee element 14 can be moved towards or away from the roller or material web for fine adjustment.
  • the add-on elements also include, in the region of the front wall 9, a mounting tool bar 17 which has an overflow surface 18 which merges into an overflow surface 19 of the front wall 9 and to which an excess collecting and discharge device 20 is connected.
  • the liquid or pasty medium fed in via the distribution pipe 4 thus flows via the feed channels 11 into the feed gap 10 and from there into the application chamber 12.
  • the excess of the liquid or pasty medium then flows out of the storage chamber 12 via the baffle plate 17 and the overflow surfaces 18 and 19 into the excess collection and discharge device 20, via which the excess liquid or pasty medium is discharged for the purpose of processing.
  • the detachable add-on elements for forming an application device in the form of a free jet nozzle comprise an add-on nozzle strip 21 which is fastened to the front wall 9 and has a concave guide surface 22 at its end facing the roller 1.
  • the add-on elements further comprise a further nozzle bar 23, which forms a metering gap 24 with the nozzle bar 21, which merges upstream into the feed gap 10 and through which the liquid or pasty medium is fed.
  • the add-on nozzle strips 21 and 23 are designed such that the metering gap 24 encloses approximately a right angle with the supply gap 10.
  • the add-on elements for the free jet nozzle can also be designed in any other way his.
  • devices can be provided with which the nozzle bar 21 or the nozzle bar 23 can be adjusted to change the metering gap 24 with respect to the opposite nozzle bar.
  • the entire order is also equipped with a schematically shown delivery and tilting device.
  • the applicator can be moved approximately radially towards the roller 1 or moved away from the latter via the feed device.
  • the entire arrangement is attached to a pivot lever S which is articulated with its right end in the drawing to a fixed bearing L such that it can be pivoted up and down about the axis of rotation D in the direction of the double arrow Z.
  • the application mechanism can be pivoted about an axis parallel to the roller axis via the tilting device and thus the position of the application chamber 12 or the free jet nozzle can be adjusted with respect to the material web or roller surface.
  • the entire arrangement on the pivot lever S can be pivoted about the parallel axis lying in the center of the squeegee strip in the present exemplary embodiment, as is indicated in the drawing by a double arrow K.
  • the application unit according to FIG. 2 with the application unit working as a free jet nozzle has a greater "height" than the application unit working with the application chamber according to FIG. 1, the application unit must be moved somewhat away from the roller 1 via the delivery unit.
  • FIGS. 3 and 4 show a second embodiment in which the Application unit with respect to the roller 1 is arranged approximately in the "three o'clock position" of the roller.
  • This application unit also comprises a support beam 30 which serves as the basis for the individual elements of the application unit and comprises a distribution pipe 31 through which the liquid or pasty medium is supplied.
  • the arrangement also has a front wall 32 and a rear wall 33, between which a feed gap 34 is formed.
  • the feed gap in turn is connected to the distribution pipe 31 via feed channels 35. Liquid or pasty medium supplied via the distribution pipe 31 can therefore be fed into the feed gap 34 via the feed channels 35, as is indicated by arrows.
  • the special feature in the second exemplary embodiment is that the base assembly in the region of the front wall 32 and the rear wall 33 for the detachable attachment of add-on elements either for the formation of an application device in the form of an application chamber (see FIG. 3) or for training an application device in the form of a free jet nozzle (cf. FIG. 4) is set up.
  • the components of the basic assembly of the application unit are hatched in FIGS. 3 and 4, while the attachment elements forming the application chamber (FIG. 3) or the free jet nozzle (FIG. 4) are only shown in outline lines.
  • the fastening elements for the attachment elements can be designed in a wide variety of ways. The fastening elements are therefore only indicated with dash-dotted lines in FIGS. 3 and 4.
  • the add-on elements for forming the application chamber comprise an add-on squeegee carrier 36 with squeegee element 37 and adjusting device 38.
  • the add-on elements in the region of the front wall 32 comprise an add-on tool bar 39, which has an overflow surface 40 which flows into an overflow channel 41 opens out, to which an excess collection and discharge device 42 connects.
  • a jet device 43 is provided in order to ensure the outflow of the excess liquid or pasty medium through the outflow channel 41.
  • the detachable attachment elements for forming an application device in the form of a free jet nozzle comprise an attachment nozzle strip 44 which is fastened on the front wall 32 and a nozzle strip 45 which is fastened on the rear wall 33.
  • the fastening means for the attachment nozzle strips 44 and 45 are also indicated in FIG. 4 only with dash-dotted lines.
  • the second exemplary embodiment shown in FIGS. 3 and 4 naturally also has an infeed and tilting device, which, however, is not shown for the sake of clarity.
  • the add-on elements for the optional formation of an application chamber application device or a free jet nozzle application device are designed in such a way that the two construction variants each have the Direction of rotation of the associated roller 1 can be maintained.
  • the attachment elements can, however, also be designed in such a way that the conversion from one to the other conversion variant is accompanied by a reversal of the direction of rotation of the associated roller 1, which acts as a counter roller in the case of direct application and as an application roller in the case of indirect application.
  • Such a configuration of the add-on elements, which brings about a reversal of the direction of rotation of the roll is realized in a third exemplary embodiment, which is explained below with reference to FIGS. 5 and 6.
  • a basic assembly is again formed, which is retained in the case of both application unit variants, which are realized by means of detachably mounted add-on elements.
  • This basic assembly comprises a support beam 3, only a part of which is indicated in the figures.
  • the support beam 3 carries a distribution pipe 4 through which the liquid or pasty medium to be applied is fed.
  • a rear or inner wall 5 is attached to the distribution pipe 4, to which further rear or inner wall sections 5A and 26 are connected.
  • the support beam 3 carries a front or outer wall 9, which forms a feed gap 10 together with the rear or inner wall 5.
  • feed channels 11 Through feed channels 11, the liquid or pasty medium passes from the distribution pipe 4 into the feed gap 10, from where the medium is fed to the application device adjoining the basic assembly.
  • Outer wall 9 has an excess collection and discharge device 20 attached to the liquid or pasty medium.
  • the previously described basic assembly bears add-on elements for forming an application device in the form of an application chamber 12.
  • Doctor blade carrier elements 13, 13A and a further element 25 are attached to the area 5A of the rear wall 5.
  • Doctor blade element 13A receives a doctor blade element 14 in the form of a roller doctor blade.
  • the doctor blade elements 13, 13A together form a bent or angled doctor blade carrier.
  • the attachment element 25 carries an adjusting device 15 known per se, with which the doctor element 14 carried by the doctor carrier element 13A can be adjusted in the direction of the roller 1 or away from it.
  • the adjusting device 15 is indicated by an arrow.
  • an attachment element 17 is attached in the form of a baffle bar.
  • an overflow surface 18 is formed, via which excess liquid or pasty medium from the application chamber into the subsequent excess collecting and discharge device 20 can flow off.
  • the roller 1 which acts as an application roller with indirect application and as a counter roller with direct application, rotates in the variant shown in FIG. 5 with order chamber in the direction of arrow 2.
  • the add-on elements 21 and 23 are mounted.
  • the attachment element 21 in the form of a nozzle strip is placed on the area 5A of the rear wall 5, while the Add-on element 23 in the form of a second nozzle strip is placed on the area of the front wall 9.
  • the two nozzle strips 21 and 23 are designed such that they form a metering gap 24 between them, which is followed by a free concave deflection surface 22 along the nozzle strip 21.
  • the liquid or pasty medium to be applied leaves the application device as a free jet and is deflected on the deflection surface 22 in the corresponding application direction with respect to the surface of the roller 1.
  • the adjusting device 15 by means of which the nozzle bar 21 can be moved toward or away from the opposite nozzle bar 23 for adjusting the metering gap 24.
  • the roller drive is with one Reverse direction of rotation, not shown.
  • the operating devices i.e. especially the
  • Adjustment devices 15 on the same side of the coating machine. In both conversion variants, the operating personnel, along with the associated operating and adjustment devices, remain on the same operating side of the coating machine, which also contributes to a faster and more uncomplicated conversion.
  • This third exemplary embodiment is also provided with a feed and tilting device, which is not shown for reasons of better clarity. Also from For reasons of better clarity, further elements necessary for the function but not necessary for understanding the invention are not shown in FIGS. 5 and 6.
  • FIGS. 7 and 8 illustrate a fourth exemplary embodiment of the application work according to the invention.
  • Corresponding components of the application work are provided with the same reference numerals as in the first exemplary embodiment according to FIGS. 1 and 2.
  • components 3, 4, 5, 6, 7, 8, 9, 10 and 11, which form the basic assembly, is therefore made to the comments on the first embodiment.
  • a common attachment element 21A is retained, which is attached to an area 5A of the rear or inner wall 5.
  • this common add-on element 21A serves as a nozzle bar and, together with a second nozzle bar 23 attached to the region of the front and outer wall 9, forms a metering gap 24 which acts as a free-jet nozzle 21A is designed such that it has a free concave deflection surface 22 which adjoins the metering gap 24 and directs the free jet of the liquid or pasty medium in the desired direction with respect to the surface of the roller 1.
  • the elements 25A, 26A and 27A form an adjusting device for the metering gap 24.
  • the head region of the nozzle bar 21A can be adjusted closer to or away from the nozzle bar 23.
  • the nozzle bar 21A has a thinner area in its center, which enables a certain elastic deformability of the bar head.
  • the head region of the nozzle strip 21A can also be deformed with respect to the cover 27A, which is firmly connected to the strip 25A by means of fastening means which are only indicated schematically in FIG. 7.
  • An adjustment device other than that shown here by way of example can of course also be used.
  • the counter or application roller 1 moves in the direction of the arrow 2.
  • the free jet nozzle application device in the direction of the roller rotation is followed by a fine metering device F, which finely doses the applied coat of liquid or pasty medium by means of a fine metering doctor blade.
  • FIG. 8 shows the application chamber conversion variant of the fourth exemplary embodiment, in which the basic assembly and the common add-on element 21A are retained as in the free jet nozzle application unit variant according to FIG. 7.
  • the strip 25A and the screws 26A are also retained, but the adjusting screws 26A do not have any function in the application chamber conversion variant.
  • an add-on element in the form of a baffle bar 17 is now placed on the common add-on element 21A and the bar 25A and is firmly connected to it by means of fastening means (only shown schematically).
  • the baffle bar 17 On its outer surface, the baffle bar 17 is provided with an overflow surface 18, to which an excess collection and discharge device 20 connects.
  • IC excess collection and discharge device
  • Doctor blade carrier elements 13 and 13A and a doctor blade element 14 held in doctor blade carrier element 13A are attached to the area of the front or outer wall 9.
  • a known adjusting device 15 is provided in order to move the doctor element 14 towards or away from the roller 1.
  • the direction of rotation (see arrow 2) of the roller 1 is maintained in both conversion variants.
  • the fourth exemplary embodiment explained above enables a faster and simpler conversion from one variant to the other, since the attachment element 21A can be retained in both variants and can therefore be attributed to the basic assembly. When converting from one variant to the other, fewer add-on parts need to be converted.
  • a basic structure which is composed of a basic assembly and an application device located thereon in the form of a free jet nozzle arrangement.
  • the basic assembly comprises a support beam 3, which carries the individual elements of the application and comprises a distribution pipe 4, through which the liquid or pasty medium is supplied.
  • the supporting beam 3 has a rear or inner wall 5 which extends approximately radially to the roller 1 and which in the present exemplary embodiment merges into the wall of the distribution tube 4.
  • the bearing journal 7 carry.
  • Front wall webs 8 are mounted on the journal 7 and are fastened to a front or outer wall 9, which runs at a distance and approximately parallel to the outer surface of the rear wall 5 and the adjoining wall of the distribution pipe 4, and in this way forms a feed gap 10, which is also aligned approximately radially to the roller 1.
  • the supply gap 10 is in turn connected to the interior of the distribution pipe 4 via a number of supply channels 11 which penetrate the wall of the distribution pipe 4. Liquid or pasty medium supplied via the distribution pipe 4 can therefore be fed into the feed gap 10 via the feed channels 11, as is indicated by arrows.
  • the front wall 9 is provided in the region of its end facing away from the journal 7 with a lip 12B which delimits a metering gap 13B of the free jet nozzle.
  • a lip element 14B with a concave deflection surface 15B is placed on the upper side of the support beam 3 facing the roller 1, which together with the lip 12B forms the metering gap 13B of the free jet nozzle.
  • the basic structure described above forms a free jet nozzle unit that is known in principle.
  • the liquid or pasty medium fed in via a distribution pipe 4 flows through the feed channels 11 into the feed gap 10 and the metering gap 13B and then passes between the lips 12B and 14B, deflected via the deflection surface 15B as a free jet, which then flows directly Order is applied to the material web supported by the counter-roller 1 or, in the case of indirect application, to the roller 1 which then functions as the application roller.
  • Free jet nozzle applicator in which the further construction elements shown in FIG. 9, which are mounted on the lip elements 12B and 14B, are of course removed.
  • the entire order work is equipped with a schematically illustrated delivery and tilting device.
  • the applicator can be moved approximately radially towards the roller 1 or moved away from the latter via the feed device.
  • the entire arrangement is attached to a pivot lever S which is articulated with its right end in the drawing to a fixed bearing L such that it can be pivoted up and down about the axis of rotation D in the direction of the double arrow Z.
  • the applicator can be pivoted about an axis parallel to the roll axis via the tilting device, and thus the angle of the applicator can be adjusted with respect to the material web or roll surface.
  • the entire arrangement on the pivot lever S can be pivoted about the axis lying in the center of the element 20B in the present exemplary embodiment and parallel to the roller axis, as is indicated in the drawing by a double arrow K.
  • Element 20B will be discussed in more detail later.
  • the associated roller position is indicated by a dash-dotted line.
  • the corresponding setting of the application unit with respect to the roller 1 is carried out by the feed and tilting device explained above.
  • a fine metering device F is connected downstream of the applicator in the direction of the roll, which is indicated by arrow 2. If necessary, this can also be available when operating with the application chamber.
  • the order unit described above ie including the basic assembly, had to be completely dismantled and replaced by a new order unit working with the order chamber. According to the invention, this complex dismantling and modification is no longer necessary. Rather, according to the invention, only the areas that directly apply the liquid or pasty medium are converted, as described below and shown in FIG. 9.
  • the lips 12B and 14B are designed for the detachable attachment of elements for forming an application chamber for the liquid or pasty medium.
  • doctor carrier elements 18B and 19B with a doctor element 20B on the lip 12B and to place a baffle bar 16B on the lip 14B.
  • the detachably mounted baffle bar 16B is equipped with an overflow surface 17B which leads to an excess collection and discharge device 23B.
  • the doctor carrier elements 18B and 19B are subdivided into a doctor holder 18B and a doctor bed 19B in which the doctor element 20B is mounted in the form of a doctor rod.
  • the doctor bed 19B can be adjusted relative to the doctor holder 18B via an adjusting device 21B according to the respective requirements.
  • the overall arrangement can moreover be tilted about the axis of the doctor rod (or when using a doctor element in the form of a blade, around its effective edge) lo be pivoted, as indicated by the double arrow K.
  • the doctor bed 19B and parts of the doctor holder 18B together with the baffle bar 16B form an application chamber 22B, from which the liquid or pasty medium is then applied via the doctor element 20B to the surface of the roller 1 or the surface of the material web.
  • the excess of the liquid or pasty medium flows out of the application cam 22B via the baffle bar 16B and reaches the excess collection and discharge device 23B via the overflow surface 17B for the purpose of processing.
  • the add-on elements in the form of the doctor blade carrier 18B, 19B and the baffle bar 16B are easy and quick to handle and can be easily attached and removed in order to convert the free jet nozzle application unit into the application chamber application unit shown in FIG. 9 and vice versa.
  • the order work must be delivered via the delivery device for working with free jet nozzle and moved away for working with order chamber.
  • the optimal angular position of the free jet nozzle or the application chamber relative to the roller 1 can then be adjusted via the tilting device.
  • a basic structure is formed, as shown in FIG. 10.
  • the basic structure consists of a basic assembly and an application device located on it in the form of an application chamber.
  • the front or outer wall 9 is configured in the region of its end facing away from the bearing shaft 7 as a baffle strip 12C and forms an overflow surface 13C on its outer surface.
  • the overflow surface 13C merges in the region of the front wall webs 8 into an excess collection and discharge device 14C.
  • a doctor blade carrier 18C which carries a doctor blade element 17C in the form of a blade, adjoins the region 5C of the rear or inner wall 5.
  • the doctor element 17C is held in the doctor carrier 18C by means of a tensioning device 18C and can be moved towards or away from the material web surface or roller surface by means of an adjusting device 19C which is arranged along a bar 16C.
  • An application chamber 20C is delimited by the doctor carrier element 18C with the doctor blade 17C and the baffle bar 12C.
  • Such an application chamber application as described above, is known in principle.
  • the liquid or pasty medium fed in via the distribution pipe 4 flows via the feed channels 11 into the feed gap 10 and from there into the application chamber 20C formed between the baffle bar 12C and the doctor element 17C.
  • the excess of the liquid or pasty medium flows out via the damming bar 12C and reaches the excess collecting and discharge device 14C via the overflow surface 13C for the purpose of processing.
  • the applicator unit can be pivoted about an axis parallel to the roller axis via the tilting device and thus the angle of the doctor element 17C with respect to the material web or Roll surface can be adjusted.
  • the entire arrangement on the pivot lever S can be pivoted about the parallel axis lying approximately in the effective edge of the doctor element 17, as is indicated in the drawing by a double arrow K.
  • the application chamber application unit shown in FIG. including the basic assembly consisting of the supporting beam, distribution pipe, connection and other devices, and replaced by a new application unit equipped with a free jet nozzle.
  • this complex dismantling and modification is no longer necessary. Rather, only the areas which directly apply the liquid or pasty medium are converted, as is shown schematically in FIG. 11.
  • the basic assembly i.e. the supporting beam, the distribution pipe and the devices required for connection can thus remain and, according to the invention, can be used both for an arrangement working with a free jet nozzle and for an arrangement working with an application chamber. For the conversion, only certain add-on elements that are easier and faster to handle need to be attached or detached.
  • the baffle bar 12C of the front wall 9 and the squeegee carrier 18C are designed for the detachable attachment of elements to form an application device which works as a free jet nozzle.
  • the application chamber application unit according to FIG. 10 it is only necessary to attach a mounting element in the form of a nozzle bar 21C to the baffle bar 12C and to attach a second nozzle bar 24C to the doctor carrier 18C instead of a doctor element 17C, which then also with the nozzle bar 21C one Dosing gap 25C forms, which acts as a free jet nozzle.
  • the metering gap 25C forms approximately a right angle with the supply gap 10.
  • a free concave deflecting surface 22C is formed on the nozzle bar 21C, which adjoins the metering gap 24C and deflects the free jet of the liquid or pasty medium in the desired direction with respect to the roller or material web surface.
  • the counter or application roller 1 has the same direction of rotation in both conversion variants according to FIGS. 10 and 11, which is marked by an arrow 2.
  • the nozzle bar 21C is fastened using fastening screws 23C, but the attachment of the add-on elements for forming the free-jet nozzle metering gap can be carried out in various ways.
  • the nozzle bar 24C is held in the tensioning device of the doctor carrier 18C and can be adjusted by means of the adjusting device 19C arranged along the bar 16C with respect to the opposite nozzle bar 21C for setting the metering gap 25C.
  • the add-on elements in the form of the nozzle bar 21C and 24C are easy and quick to handle and can be easily attached and removed in order to convert the basic application unit with application chamber, as shown in FIG. 10, into a free-jet nozzle application unit according to FIG. 11 and vice versa.
  • the application unit according to FIG. 11 with the application unit working as a free jet nozzle has a greater "height" than the application unit working with application chamber according to FIG. 10, the application unit must be moved somewhat away from the roller 1 via the delivery unit.

Landscapes

  • Coating Apparatus (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polymerisation Methods In General (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Medicinal Preparation (AREA)
  • Nozzles (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un mécanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pâte sur une bande de matériau en mouvement, en particulier sur une bande de papier ou de carton. Ce mécanisme comprend un ensemble de base constitué d'une poutre (3), d'un dispositif de distribution (4, 11) conçu pour distribuer la substance à appliquer dans une fente d'alimentation (10) délimitée par une paroi antérieure (9) et une paroi postérieure (5), ainsi que des dispositifs de réglage et de raccordement (D, K, L, S, Z). La zone (5, 9) de la paroi antérieure et de la paroi postérieure du module de base est conçue pour permettre le montage, de façon éventuellement amovible, d'éléments formant une chambre d'application (12) ou formant une fente de dosage de buse à jet libre pour la substance à appliquer. L'invention concerne en outre des mécanismes d'application comprenant un module de base présentant un dispositif d'application avec buse à jet libre ou avec chambre d'application, ces mécanismes étant conçus respectivement pour permettre le montage de l'autre variante d'application.
PCT/EP1995/003444 1994-09-09 1995-09-06 Mecanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pate sur une bande de materiau en mouvement WO1996007790A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP8509185A JPH09506294A (ja) 1994-09-09 1995-09-06 移動中の帯状材に液体ないし糊状物質を直接に又は間接に塗布する塗布装置
AT95931968T ATE201466T1 (de) 1994-09-09 1995-09-06 Auftragswerk zum direkten oder indirekten auftragen eines flüssigen oder pastösen mediums auf eine laufende materialbahn
DE59509286T DE59509286D1 (de) 1994-09-09 1995-09-06 Auftragswerk zum direkten oder indirekten auftragen eines flüssigen oder pastösen mediums auf eine laufende materialbahn
EP95931968A EP0728241B1 (fr) 1994-09-09 1995-09-06 Mecanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pate sur une bande de materiau en mouvement
US08/640,905 US5772766A (en) 1994-09-09 1995-09-06 Application unit for the direct or indirect application of a liquid or pasty medium onto a moving material web
FI961910A FI106967B (fi) 1994-09-09 1996-05-06 Levityslaite nestemäisen tai pastamaisen aineen levittämiseksi suoraan tai epäsuoraan liikkuvalle materiaalirainalle

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DEP4432179.1 1994-09-09
DE19944432180 DE4432180A1 (de) 1994-09-09 1994-09-09 Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DEP4432180.5 1994-09-09
DE19944432179 DE4432179C1 (de) 1994-09-09 1994-09-09 Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DEP4432178.3 1994-09-09
DE19944432178 DE4432178A1 (de) 1994-09-09 1994-09-09 Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn

Publications (1)

Publication Number Publication Date
WO1996007790A1 true WO1996007790A1 (fr) 1996-03-14

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ID=27206754

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PCT/EP1995/003444 WO1996007790A1 (fr) 1994-09-09 1995-09-06 Mecanisme permettant d'appliquer directement ou indirectement une substance sous forme de liquide ou de pate sur une bande de materiau en mouvement

Country Status (7)

Country Link
EP (1) EP0728241B1 (fr)
JP (1) JPH09506294A (fr)
AT (1) ATE201466T1 (fr)
CA (1) CA2174749A1 (fr)
DE (1) DE59509286D1 (fr)
FI (1) FI106967B (fr)
WO (1) WO1996007790A1 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP0781884A1 (fr) * 1995-12-29 1997-07-02 Voith Sulzer Papiermaschinen GmbH Appareil d'enduction pour déposer directement ou indirectement un matériau fluide ou pâteux sur une bande en mouvement
US5789023A (en) * 1992-09-11 1998-08-04 Consolidated Papers, Inc. Method of applying coating to a web using centrifugal force
EP0931878A3 (fr) * 1998-01-27 2000-05-03 Beloit Technologies, Inc. Dispositif d'enduction
US6319552B1 (en) 1992-09-11 2001-11-20 Stora Enso North America Corp. Method of decreasing skip coating on a paper web

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808518B (zh) * 2021-02-05 2024-08-23 广东汕樟轻工股份有限公司 一种移动式半柔性版涂布装置

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US5112653A (en) * 1989-07-03 1992-05-12 Consolidated Papers, Inc. Method of and apparatus for coating high speed traveling webs
CA2101358A1 (fr) * 1992-09-11 1994-03-12 Wayne A. Damrau Jet applicateur pour l'application d'un revetement sur une trame de papier et methode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112653A (en) * 1989-07-03 1992-05-12 Consolidated Papers, Inc. Method of and apparatus for coating high speed traveling webs
EP0496946A1 (fr) * 1991-01-31 1992-08-05 Consolidated Papers, Inc. Procédé et dispositif pour revêtir des bandes se déplaçant à grande vitesse
CA2101358A1 (fr) * 1992-09-11 1994-03-12 Wayne A. Damrau Jet applicateur pour l'application d'un revetement sur une trame de papier et methode

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789023A (en) * 1992-09-11 1998-08-04 Consolidated Papers, Inc. Method of applying coating to a web using centrifugal force
US5968270A (en) * 1992-09-11 1999-10-19 Consolidated Papers, Inc. Apparatus for decreasing skip coating on a paper web
US6319552B1 (en) 1992-09-11 2001-11-20 Stora Enso North America Corp. Method of decreasing skip coating on a paper web
US6592669B2 (en) 1992-09-11 2003-07-15 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
US7211297B2 (en) 1992-09-11 2007-05-01 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
US7338559B2 (en) 1992-09-11 2008-03-04 Stora Enso North America Corp. Apparatus for decreasing skip coating on a paper web
EP0781884A1 (fr) * 1995-12-29 1997-07-02 Voith Sulzer Papiermaschinen GmbH Appareil d'enduction pour déposer directement ou indirectement un matériau fluide ou pâteux sur une bande en mouvement
US5788162A (en) * 1995-12-29 1998-08-04 Voith Sulzer Papiermaschinen, Gmbh Application unit for directly or indirectly applying a fluid or pasty medium to a continuous material web
EP0931878A3 (fr) * 1998-01-27 2000-05-03 Beloit Technologies, Inc. Dispositif d'enduction
US6235115B1 (en) 1998-01-27 2001-05-22 Beloit Technologies, Inc. Fountain coating applicator and support beam

Also Published As

Publication number Publication date
DE59509286D1 (de) 2001-06-28
FI106967B (fi) 2001-05-15
EP0728241B1 (fr) 2001-05-23
ATE201466T1 (de) 2001-06-15
CA2174749A1 (fr) 1996-03-14
FI961910A7 (fi) 1996-07-05
EP0728241A1 (fr) 1996-08-28
FI961910A0 (fi) 1996-05-06
JPH09506294A (ja) 1997-06-24

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