EP1587986B1 - Vorrichtung zur behandlung eines verbundgebildes - Google Patents

Vorrichtung zur behandlung eines verbundgebildes Download PDF

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Publication number
EP1587986B1
EP1587986B1 EP04705427A EP04705427A EP1587986B1 EP 1587986 B1 EP1587986 B1 EP 1587986B1 EP 04705427 A EP04705427 A EP 04705427A EP 04705427 A EP04705427 A EP 04705427A EP 1587986 B1 EP1587986 B1 EP 1587986B1
Authority
EP
European Patent Office
Prior art keywords
blade
blade holder
treatment equipment
counter
equipment according
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
EP04705427A
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English (en)
French (fr)
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EP1587986A1 (de
Inventor
Ilkka Rata
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1587986A1 publication Critical patent/EP1587986A1/de
Application granted granted Critical
Publication of EP1587986B1 publication Critical patent/EP1587986B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • This invention relates to composite-construction treatment equipment, which is designed to be set in connection with a moving surface and which equipment includes
  • blade holders manufactured entirely of a composite material have been in use only for a short period of time.
  • One known blade holder located in a paper machine has an arm section by which the blade holder is attached to a frame formed by a beam. The arm section is extended with a clamp section, which is fitted with a gap for the blade.
  • a composite-construction blade holder is light in weight and durable compared to conventional metal blade holders.
  • the blade holder can also be made more adaptable to the surface for example by orientating the reinforced fibers.
  • the blade holder is rigid in the blade loading direction, i.e. in the machine direction.
  • the composite-construction returns to the original shape even after major deformations.
  • the blade holder is attached to the frame using screws. This requires removing the screws during the installation and change of the blade holder, which takes time and requires working inside the paper machine. In some cases even the whole treatment equipment needs to be removed from the paper machine for installing the blade holder.
  • the holes required by the screws in the arm section create discontinuity points in the blade holder construction reducing thus its durability.
  • Document WO-0046445-A1 discloses in one embodiment a treatment equipment comprising a frame, a blade holder, a backing blade and a blade, wherein the backing blade on one of its ends is screwed to the blade holder.
  • the object of this invention is to provide novel composite-construction treatment equipment, which is easier to use and service, yet more versatile than heretofore. construction treatment equipment having the features of claim 1.
  • the whole blade holder can be changed in a simple manner. This makes the installation and change of the blade holder quick and easy. Irrespective of the unexpected construction, the blade holder can additionally be provided with loading elements, for example. The blade holder can also be easily retrofitted in existing treatment equipment without major modifications.
  • the design of new treatment equipment can be made simpler than before.
  • the components of the treatment equipment can be changed independent of each other, which allows to precisely adjust the treatment equipment characteristics as desired.
  • Figure 1 shows the treatment equipment according to the invention adapted in connection with a moving surface 10.
  • the moving surface 10 is a paper machine roll 11, of which only a part is shown.
  • the purpose of the treatment equipment is to treat a moving surface.
  • the purpose of doctoring is to remove impurities from the surface or, for example, the web itself in some paper machine positions.
  • moving surfaces also comprise the surfaces of various cylinders and fabrics.
  • the treatment equipment is used for example for web coating, in which a coating paste is applied to the surface of a moving web. This is illustrated in Figure 5a .
  • the treatment equipment comprises a frame 12, arranged in the vicinity of the surface 10 to be treated.
  • the frame 12 is a beam 13, which is supported by a shaft 14 in a way that allows pivoting in relation to the paper machine construction.
  • the beam is locked in the correct position using turnbuckle screws, for example (not shown).
  • the beam can be pivoted towards the surface by means of loading elements for improving the doctoring result.
  • the treatment equipment also includes a blade holder 15, which is made of a composite material to form an essentially integral component.
  • the blade holder 15 is correspondingly attached to the frame 12 ( Figure 1 ).
  • the actual treatment is provided by the blade 16 adapted to the blade holder, the dimensioning and material of which can vary between different applications. In the proposed applications both the doctor blade and the coating blade are described.
  • the blade 16 includes a doctoring edge 17, which is arranged in contact with the moving surface 10 by moving the blade holder 15. In this way the moving surface is provided with a treatment.
  • Figure 1 shows a so-called rigid blade holder 15, in which the movement of the blade holder 15 is created by pivoting the beam 13.
  • the proposed blade holders 15 also comprise a separate backing blade 18, which is set in the blade holder 15 by one end. Correspondingly, the other end of the backing blade 18 extends closer to the said edge 17 than the blade holder 15 thus supporting the blade 16.
  • the operation of the backing blade is also described below in greater detail.
  • the blades 16 shown in the figures are new. In a worn blade the edge is to the other direction. On the other hand, a bevel corresponding to a worn blade can in practice be pre-ground to the blade. In Figures 1 and 5a the movement direction of the surface 10 is indicated by the arrow.
  • the blade holder 15 is unexpectedly removably adapted to the frame 12 using a pair of form-locking counter clamps 19.
  • the form-lock between the counter clamps 20 and 21 is additionally arranged tight in the lateral direction of the blade 16 and essentially free in the longitudinal direction of the blade 16. This allows moving the blade holder in the longitudinal direction of the blade, i.e. in the cross direction of the machine.
  • the blade holder can be installed simply by pushing from the side and correspondingly, it can be removed by pulling it out.
  • the form-lock is tight in the lateral direction of the blade. This ensures that the blade holder is reliably kept in place in the machine direction.
  • the cross-machine directional mobility can be prevented using a locking pin, for example.
  • this cross-directional mobility can be utilized for oscillation with appropriate material selections. That is, the blade can be moved in relation to the surface by moving the blade holder only. All parts are preferably made of a composite material. Consequently, the scratching effect of metal rivets, for example, can be avoided.
  • the first counter clamp 20 forming the pair of counter clamps 19 is a profiled shoulder.
  • the second counter clamp 21 is adapted to cover the first counter clamp 20 essentially on the opposite sides. In this way the said second counter clamp 21 forms a groove against the first shoulder-like counter clamp 20.
  • the location of the counter clamps can vary.
  • the counter clamp is preferably arranged in the rear part parallel to the blade holder. In this case the blade is attached to the front part of the blade holder.
  • the front part refers to the blade holder part, which is nearest to the surface to be doctored.
  • the arm sections of even the known composite-construction blade holders can be modified into shoulder-like counter clamps using suitable machining methods. In practice, however, it is more preferable to bring the blade holder to the final state in connection with the manufacture, thus maintaining an integral blade holder construction.
  • the same reference numbers are used for functionally similar parts.
  • the adapter component 22 has also a curve 23 for compensating the change of the blade 15 position with respect to a conventional blade holder.
  • the blade 16 extends closer to the surface 10, in which case the blade angle ⁇ of the blade 16 relative to the surface most often changes.
  • the blade angle ⁇ decreases, which usually has a negative effect on the doctoring result. This problem can be avoided by moving the blade holder in the vertical direction, or it can be at least avoided by adjusting the beam and its position.
  • the adapter component provided with a curve can be installed in the frame also the other way round. The straightness and shape of the curve can also vary between different applications.
  • the adapter component when manufacturing new treatment equipment according to the invention, can be excluded. This is possible by arranging one of the counter clamps 20 or 21 forming the pair of counter clamps 19 in the frame 12. This is shown in the embodiments of Figures 3c and 3d .
  • the blade holder 15 shown in Figure 3d can be made extremely short, which allows its positioning in confined positions.
  • the blade holder according to the invention can also be arranged adjustable.
  • the counter clamps forming the pair of counter clamps are arranged as a mutually functional articulation. In this case it is possible to change the angle between the counter clamps while keeping the locking in the blade's lateral direction unchanged.
  • the embodiment of an adjustable, or rather of a loadable blade holder 15 is shown in Figure 4a .
  • the principle of this blade holder 15 is corresponding with that of the blade holder 15 shown in Figure 3a , except that the counter clamp 21 of the blade holder 15 is made more spacious. This ensures that the form-lock is maintained while the movement is still possible.
  • the positioning of the loading elements may be difficult due to a confined construction.
  • the lack of space can be avoided by arranging at least one provision in either or both of the counter clamps for the loading elements.
  • the blade holder 15 has such provisions on both sides of the adapter component 22.
  • the upper provision has a loading hose 26, known as such, and the lower provision has a spring component 27.
  • Figure 4b illustrates both the upper provision 25 and the lower provision 25' in more detail.
  • the treatment equipment in question is so adapted that the spring component 27 tends to turn the blade 16 upwards.
  • the blade 16 can be loaded against the surface by adjusting the pressure in the loading hose 26.
  • FIG. 4a shows a solution that is particularly advantageous for new treatment equipment according to the invention.
  • only one loading hose is needed for using the blade holder.
  • a blade holder can be selected, in which there are provisions for two loading hoses (not shown).
  • Figure 5b shows another embodiment of the loadable blade holder.
  • the blade holder 15 movement is provided by means of the loading hose 26.
  • the returning force is produced by another loading hose 26' or a spring component 27.
  • the adapter component 22 extends to both sides of the frame 12. The fastening is secured with screws.
  • FIG. 3a illustrates a thick plastic blade and Figures 3b-3d show thin metal or composite material blades. Due to the blade holder design, thin blades can be fastened using several different methods.
  • Figure 3c a conventional rivet 28 is used, whereas in Figure 3b a composite blade has been attached using a special adapter 29.
  • Figure 3d there is an extension 30 in the rear part that is larger and different in shape, in which case a separate adapter is not necessary.
  • the blade holder also has a gap 32, defined, besides the backing blade 18, by the clamp 33.
  • the backing blade 18 is similar to the blade 16.
  • the end of the backing blade 18, which is to be adapted to the blade holder 15, has a form-lockable detent 34 for fastening the backing blade 18 removably to the blade holder 15.
  • the backing blade like the blade holder, has a quick clamping system, allowing its replacement.
  • Figure 2b shows an application related to the backing blade 18.
  • the blade holder 15 has two fastening points 31 for the detent 34 for adjusting the position of the backing blade 18 in the lateral direction of the blade 16. That is, the blade holder 15 has two alternative fastening points 31 for connecting the backing blade 18.
  • the groove formed by the fastening point 31 can be used for example for supplying a lubricant to the blade and further to the surface to be treated.
  • the pipe can be easily sealed and the lubricant dosing is accurate.
  • the manufacture of treatment equipment according to the invention is less complicated than heretofore.
  • all parts are manufactured using the pultrusion method. This ensures that the components are ready for use without major machining operations.
  • reinforced fibers can be set in the component in a specified manner.
  • the blade, backing blade, blade holder and even the adapter component, if any, adapt to the shapes of the surface to be doctored. That is, the entire treatment equipment is controllably flexible in the cross direction of the machine. This eliminates vibration problems of the treatment equipment and uneven blade wear, among other things.
  • the known micro-screws designed for profile control are unnecessary. Instead, the major part of reinforced fibers is found in the longitudinal direction of the machine, in which case the treatment equipment can be loaded against the surface. That is, the components are rigid for transferring the force.
  • the above-described construction also enables a quick adjustment of the treatment equipment.
  • Various types of blade holders can be attached to the frame and similarly, various types of blades and backing blades can be quickly replaced in the blade holders. In this way it is possible to obtain a suitable combination for each situation by changing the components. Due to the removable backing blade, the blade holder can additionally be entirely cleaned. This is easy also on the outside of the machine, as the whole blade holder can be simply removed from the machine.
  • Composite-construction treatment equipment is advantageous as regards the operation as well.
  • the tested blade holders weigh only 3 kg/m, in which case bending due to their own weight is nonexistent.
  • the blade holder can be installed in the treatment equipment manually without cranes or other supports.
  • the composite-construction endures well sudden impacts and returns to the original shape in spite of even major deformations.
  • the composite-construction breaks totally at once functioning thus as a special safety fuse.
  • the operation of the treatment equipment can also be easily monitored by installing diaphragm sensors, for example, between the blade and the backing blade for determining the loading pressure profile.
  • the treatment equipment according to the invention is simple to manufacture, yet versatile to use. In addition, installing the treatment equipment and changing its components is quick, which reduces production breaks.
  • the blade holder is light in weight, and therefore its storing and especially handling is easy. Also, in using the blade holder, less force is required than before.
  • Another significant aspect is also the possibility of combining various components into a combination appropriate for each situation. Consequently, the desired doctoring result is obtained in each position, also when the geometry of the position changes, for example, when changing in a certain position a roll, whose diameter differs from that of the previously used roll.
  • the treatment equipment can be reset during a grade change shutdown even when changing the production parameters, which is impossible in the known treatment equipment.

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  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Knives (AREA)

Claims (11)

  1. Behandlungseinrichtung in einer Verbundbauweise, die gestaltet ist, um mit einer sich bewegenden Oberfläche (10) in Verbindung gebracht zu werden, wobei die Einrichtung aufweist:
    - einen in der Nähe der Oberfläche (10) eingerichteten Rahmen (12),
    - einen Rakelhalter (15), der aus einem Verbundmaterial ausgebildet ist, um eine im Wesentlichen einstückige Komponente auszubilden, die mit dem Rahmen (12) verbunden ist,
    - eine Rakel (16), die an dem Rakelhalter (15) angepasst ist, mit einer Kante (17), die angepasst ist, um mit der sich bewegenden Oberfläche (10) in Kontakt gebracht zu werden, indem der Rakelhalter (15) bewegt wird, und
    - eine separate Stützrakel (18), die an dem Rakelhalter (15) angepasst ist und mit einem Ende an dem Rakelhalter (15) festgesetzt ist, während sich das andere Ende näher an die Kante (17) erstreckt als an den Rakelhalter (15), wobei
    der Rakelhalter (15) mit einem Paar formschlüssiger Gegenklemmen (19) lösbar an dem Rahmen (12) angepasst ist, in denen der Formschluss fest in der seitlichen Richtung der Rakel (16), d. h. in der Maschinenlaufrichtung, und im Wesentlichen frei in der Längsrichtung der Rakel (16), d. h. in der Querrichtung der Maschine, eingerichtet ist, dadurch gekennzeichnet, dass
    das Ende der Stützrakel (18) eine formschlüssige einrückbare Arretierung (34) hat, um die Stützrakel (18) lösbar an dem Rakelhalter (15) zu befestigen.
  2. Behandlungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die erste Gegenklemme (20), die das Paar von Gegenklemmen (19) ausbildet, eine profilierte Schulter ist, die angepasst ist, auf den im Wesentlichen entgegengesetzten Seiten von der zweiten Gegenklemme (21) bedeckt zu werden.
  3. Behandlungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in dem Rakelhalter (15) die Gegenklemme (20, 21), die das Paar von Gegenklemmen (19) ausbildet, in dem hinteren Teil parallel zu dem Rakelhalter (15) mit der an dem vorderen Teil des Rakelhalters (15) angebrachten Rakel (16) eingerichtet ist.
  4. Behandlungseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine der Gegenklemmen (20, 21), die das Paar von Gegenklemmen (19) ausbildet, in einer separaten Adapterkomponente (22) eingerichtet ist, die gestaltet ist, mit dem Rahmen (12) verbunden zu werden.
  5. Behandlungseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine der Gegenklemmen (20, 21), die das Paar von Gegenklemmen (19) ausbildet, an dem Rahmen (12) eingerichtet ist.
  6. Behandlungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Gegenklemmen (20, 21), die das Paar von Gegenklemmen (19) ausbilden, als ein gegenseitig wirkendes Gelenk eingerichtet sind, wobei in diesem Fall eine Winkeländerung zwischen den Gegenklemmen (20, 21) möglich ist, wobei die Verriegelung in der seitlichen Richtung der Rakel (16) unverändert bestehen bleibt.
  7. Behandlungseinrichtung nach Anspruch 6, dadurch gekennzeichnet, dass es Einspannbauteile (24) zwischen der Gegenklemme (20, 21), die das Paar von Gegenklemmen (19) ausbildet, und dem Rakelhalter (15) gibt.
  8. Behandlungseinrichtung nach Anspruch 7, dadurch gekennzeichnet, dass eine oder beide der Gegenklemmen (20, 21), die das Paar von Gegenklemmen (19) ausbilden, mindestens eine Vorbereitung (25, 25') für die Einspannbauteile (24) haben.
  9. Behandlungseinrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Einspannbauteile (24) aus Ladeschläuchen (26) und/oder Federkomponenten (27) ausgebildet sind.
  10. Behandlungseinrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Stützrakel (18) ähnlich der Rakel (16) ist und eines ihrer Enden, das an dem Rakelhalter (15) angelegt werden soll, auch mit einer formschlüssigen einrückbaren Arretierung (34) vorgesehen ist, um die Stützrakel (18) lösbar mit dem Rakelhalter (15) zu verbinden.
  11. Behandlungseinrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Rakelhalter (15) mindestens zwei Befestigungspunkte (31) für die einrückbare Arretierung (34) hat, um die Position der Stützrakel (18) in der seitlichen Richtung der Rakel (16), d. h. in der Maschinenlaufrichtung, anzupassen.
EP04705427A 2003-01-30 2004-01-27 Vorrichtung zur behandlung eines verbundgebildes Expired - Lifetime EP1587986B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20035010 2003-01-30
FI20035010A FI114328B (fi) 2003-01-30 2003-01-30 Komposiittirakenteinen käsittelylaitteisto
PCT/FI2004/050006 WO2004067839A1 (en) 2003-01-30 2004-01-27 Composite-construction treatment equipment

Publications (2)

Publication Number Publication Date
EP1587986A1 EP1587986A1 (de) 2005-10-26
EP1587986B1 true EP1587986B1 (de) 2012-11-28

Family

ID=8566344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04705427A Expired - Lifetime EP1587986B1 (de) 2003-01-30 2004-01-27 Vorrichtung zur behandlung eines verbundgebildes

Country Status (7)

Country Link
US (1) US20060180291A1 (de)
EP (1) EP1587986B1 (de)
JP (1) JP4448126B2 (de)
CN (1) CN100572660C (de)
CA (1) CA2511375C (de)
FI (1) FI114328B (de)
WO (1) WO2004067839A1 (de)

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US6942734B2 (en) * 2003-02-20 2005-09-13 Metso Paper, Inc. Treatment equipment

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CA2511375A1 (en) 2004-08-12
CA2511375C (en) 2008-06-03
CN1738942A (zh) 2006-02-22
EP1587986A1 (de) 2005-10-26
WO2004067839A1 (en) 2004-08-12
FI114328B (fi) 2004-09-30
FI20035010A0 (fi) 2003-01-30
US20060180291A1 (en) 2006-08-17
FI20035010A (fi) 2004-07-31
JP2006516686A (ja) 2006-07-06
JP4448126B2 (ja) 2010-04-07
CN100572660C (zh) 2009-12-23

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