EP0922495B1 - Method for producing components for the mechanical processing of suspended fibre material as well as the produced components - Google Patents

Method for producing components for the mechanical processing of suspended fibre material as well as the produced components Download PDF

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Publication number
EP0922495B1
EP0922495B1 EP98118687A EP98118687A EP0922495B1 EP 0922495 B1 EP0922495 B1 EP 0922495B1 EP 98118687 A EP98118687 A EP 98118687A EP 98118687 A EP98118687 A EP 98118687A EP 0922495 B1 EP0922495 B1 EP 0922495B1
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European Patent Office
Prior art keywords
basic body
processing
polymer
layer
produced
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EP98118687A
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German (de)
French (fr)
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EP0922495A1 (en
Inventor
Josef Schneid
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Voith Patent GmbH
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Voith Paper Patent GmbH
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • D21D1/008—Discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/4984—Retaining clearance for motion between assembled parts
    • Y10T29/49844—Through resilient media

Definitions

  • the thread can be machined into the machining element 2 be let in if its material is suitable for it. Such a case is in FIG. 12 shown. Then the machining surface is not through these screws impaired.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Paper (AREA)
  • Reinforced Plastic Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Materials For Medical Uses (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The clothing structure for the components which apply a mechanical working to fiber suspensions, and especially grinding, has an inserted elastic bond between the working section (2) and the base body (1). The bonding is a layer (3) with a thickness (a) of at least 0.5 mm or at least 1.0 mm. The bonding includes vulcanizing a polymer as the bonding material at a temperature of 100-150 degrees C and at an absolute pressure of at least 3 bar in an air/steam atmosphere. The polymer material is shaped into a plate with an adhesive on both sides, mounted to the base body (1) and the working section (2) is fitted over it for vulcanizing. The plate forms an elastic layer (3), bonded to the flanking working section (2) and base body (1). The working section (2) is of a ceramic material, forming bars (4) towards the fiber side, with a projection (c) beyond the groove base of 2-20 mm. The end surface (5) of the section (2) is porous. The base body (1) has at least one opening for a projection at the working section (2) to fit into it, leaving a gap to the take the polymer layer (3) thickness (a). The intermediate layer material can have a series of projecting ribs, to fit into matching openings in the working section (2) and base body (1), to bond them together by vulcanizing. Before vulcanizing, polymer plugs can be inserted into drillings in either of the outer sections (1,2), to bond with the polymer intermediate layer (3) during vulcanizing. The base body (1) is a circular ring, composed of ring segments, or it has a truncated cone shape. The components can also be bonded together by screw bolts, and a groove lock.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Garnituren gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing sets according to the Preamble of claim 1.

Derart hergestellte Garnituren dienen der mechanischen Bearbeitung von suspendiertem Faserstoffmaterial. Damit ist vor allem das Mahlen von Papierfasern, Dispergieren von Verunreinigungen und Fasern sowie das Entstippen, also das Auflösen von Faseragglomeraten gemeint. Garnituren werden z.B. in Mahlmaschinen - sogenannte Refiner- eingebaut. Dabei hat die Suspension in Refinern einen Feststoffgehalt von etwa 2 - 8 %. Ähnliche Stoffdichten werden auch in Entstippern eingestellt. Auch die in Stofflösern eingesetzten Laufräder können Garnituren in dem hier angesprochenen Sinn aufweisen, mit denen die Naß-Zerkleinerung des eingetragenen Faserstoffmaterials durchgeführt wird. Bei Maschinen für höhere Stoffdichten spricht man z.B. von Hochkonsistenzmühlen, Dispergern oder Knetern. Die darin stattfindende mechanische Bearbeitung kann das ganze Faserstoffmaterial erfassen, also auch die darin enthaltenen Störstoffe dispergieren. Solche Maschinen haben mindestens einen Rotor und mindestens einen Stator mit entweder scheibenförmigen oder kegelförmigen Flächen, auf denen die Garnituren angebracht werden, so daß sich zwischen ihnen Spalte ausbilden können. Viele Garnituren weisen an den Arbeitsflächen Stege und Nuten auf, weshalb man auch von "Messer-Garnituren" spricht. Andere Garnituren haben die Form von Zahnringen. Es ist bekannt, daß neben der Form solcher Stege, Nuten und Zähne auch das Material, aus dem sie bestehen, Auswirkungen auf die Bearbeitung des Faserstoffs hat.Sets produced in this way serve the mechanical processing of suspended Fiber material. This primarily means grinding paper fibers, dispersing Impurities and fibers, as well as deflaking, i.e. the dissolving of Fiber agglomerates meant. Sets are e.g. in grinding machines - so-called Refiner built-in. The suspension in refiners has a solids content of approximately 2 - 8%. Similar fabric densities are also set in deflowers. Also in Impellers used in fabric detachments can be trimmings in the sense mentioned here have with which the wet crushing of the entered fiber material is carried out. In machines for higher consistency, one speaks e.g. of High consistency mills, dispersers or kneaders. The mechanical taking place in it Processing can cover the entire fibrous material, including the contained material Disperse contaminants. Such machines have at least one rotor and at least one a stator with either disk-shaped or conical surfaces on which the Trimmings are attached so that gaps can form between them. Many sets have ridges and grooves on the work surfaces, which is why one speaks of "knife sets". Other sets are in the form of toothed rings. It is known that in addition to the shape of such webs, grooves and teeth, the material, of which they are made has an impact on the processing of the pulp.

Die Garnituren sind einem Verschleiß ausgesetzt und müssen daher in bestimmten Intervallen ersetzt werden. Der Verschleiß kann außerdem während der Lebensdauer dazu führen, daß sich die Bearbeitungswirkung ändert. Form und Oberfläche der Garnituren haben nämlich einen überragenden Einfluß auf den Bearbeitungseffekt.The sets are subject to wear and must therefore be used in certain Intervals to be replaced. The wear can also occur during the lifespan cause the machining effect to change. Shape and surface of the This is because sets have an outstanding influence on the machining effect.

Es ist daher verständlich, daß für die Entwicklung von Garnituren ein beträchtlicher Aufwand getrieben wird, der sich in der Gestaltung ihrer Form und in der Auswahl des Materials niederschlägt. Dabei hat es sich gezeigt, daß Materialien, die für die Bearbeitungselemente besonders geeignet sind, Eigenschaften haben, die bei ihrer Verwendung für den Grundkörper der Garnitur sehr problematisch sein können. Insbesondere betrifft das Materialien, die sehr hart und spröde sind, wie z.B. Keramik, und daher nicht die für den Grundkörper notwendige Zähigkeit aufweisen. Femer sind solche Materialien relativ teuer und aufwendig in der Herstellung und lassen sich im Vergleich zu normalen metallischen Werkstoffen nur mit großem Aufwand bearbeiten.It is therefore understandable that for the development of trimmings a considerable one Effort is driven, which is reflected in the design of their shape and in the selection of the Material precipitates. It has been shown that materials used for Machining elements are particularly suitable to have properties that are in their Use for the main body of the set can be very problematic. In particular, this relates to materials that are very hard and brittle, e.g. ceramics, and therefore do not have the toughness necessary for the base body. Are more such materials are relatively expensive and complex to manufacture and can be Machining compared to normal metallic materials only with great effort.

Der Grundkörper eines Bearbeitungswerkzeuges stellt die Verbindung der Bearbeitungselemente zu den übrigen Bauteilen, z. B. denen einer Mahlmaschine, her. Wegen der hohen Kräfte, die in einer solchen Mahlmaschine auftreten, werden an den Grundkörper besonders hohe Festigkeitsanforderungen gestellt. Es muß auch möglich sein, ihn sicher mit der Mahlmaschine zu befestigen, wozu z.B. hochverspannte Schrauben erforderlich sind. Wegen dieser Anforderungen ist ein besonders festes und zähes Material erforderlich.The basic body of a processing tool is the connection of the Machining elements to the other components, e.g. B. those of a grinder. Because of the high forces that occur in such a grinding machine, the Base body made particularly high strength requirements. It must also be possible be secure with the grinder, for which purpose e.g. highly tense Screws are required. Because of these requirements is a particularly solid and tough material required.

Aus der DE 196 03 548 A1 ist bereits ein Verfahren zur Herstellung von Garnituren bekannt, bei dem diese aus getrennt hergestellten Teilen zusammengefügt werden. Diese Publikation spricht aber nur ganz allgemein von einem Bindehilfsmittel, welches zwischen dem Grundkörper und dem Bearbeitungselement aufgetragen wird und nennt als konkrete Beispiele das sehr aufwendige Hochtemperaturlötverfahren unter Vakuum oder Klebeverfahren. Diese an sich gut geeigneten Verfahren sind jedoch nicht immer anwendbar, für manche Anwendung zu teuer oder führen bei der Wahl von billigeren Verfahren zu nicht immer ausreichenden Festigkeiten.DE 196 03 548 A1 already describes a process for the production of sets known in which these are assembled from separately manufactured parts. This However, the publication speaks only in general terms of a binding aid, which is applied between the base body and the processing element and names as concrete examples the very complex high-temperature soldering process under vacuum or gluing process. However, these methods are not always suitable Applicable, too expensive for some applications or lead to the choice of cheaper ones Procedure for insufficient strengths.

Der Erfindung liegt die Aufgabe zugrunde, das Verfahren zur Herstellung von Garnituren so zu gestalten, daß besonders geeignete spröde Materialien für die Bearbeitungselemente verwendet und auf relativ einfache Art mit dem Grundkörper verbunden werden können.The invention has for its object the process for the production of trimmings to be designed so that particularly suitable brittle materials for the Machining elements used and in a relatively simple way with the base body can be connected.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 oder des Anspruchs 27 genannten Merkmale gelöst.This object is achieved by the characterizing part of claim 1 or claim 27 mentioned features solved.

Bei den Herstellungsverfahren dieser Art wird also - wie an sich bekannt - für die Bearbeitungselemente ein anderer Werkstoff verwendet als für den Grundkörper. Das hat den wesentlichen Vorteil, daß die Materialauswahl für die Bearbeitungselemente abgestimmt wird auf die gewünschte Bearbeitungstechnologie, während das Material des Grundkörpers in erster Linie auf seine Festigkeit hin und kostenmäßig optimiert wird.In the manufacturing process of this type - as is known per se - for Machining elements used a different material than for the base body. The has the main advantage that the material selection for the processing elements is matched to the desired machining technology, while the material of the Main body is primarily optimized for its strength and cost.

Erfindungsgemäß wird die Verbindung von Grundkörper und Bearbeitungselementen elastisch, ausreichend präzise und insgesamt preiswert ausgeführt. Die so verbundenen Teile sollen zwar nicht zueinander bewegt werden, es dürfte sich aber die Dämpfungswirkung der elastischen Schicht günstig auswirken. Sie baut Spannungsspitzen ab und reduziert die zudem bei solchen Maschinen oft lästige Lärmerzeugung. Beim Vulkanisieren handelt es sich um ein in der Produktionstechnik bereits verbreitetes Verfahren, das sich auch bei hohen Anforderungen, z.B. bei Fahrgestellen von Kraftfahrzeugen, bewährt hat, wo es der Verbindung von gegeneinander beweglichen Stahlteilen dient. Überraschenderweise liefert es auch bei der Paarung von Keramik und Stahl die für die hier betrachteten Anwendungsfälle nötigen Eigenschaften. Dabei kann eine homogene Schicht gebildet werden, die beidseitig klebt und so aushärtet, daß sie in der Masse elastisch bleibt. Oder es wird eine fertige elastische Materialschicht beidseitig angeklebt.According to the invention, the connection of the base body and machining elements elastic, sufficiently precise and inexpensive overall. The so connected Parts should not be moved towards each other, but it should Damping effect of the elastic layer have a favorable effect. She builds Voltage peaks and also reduces the annoyance of such machines Noise generation. Vulcanizing is one in production technology already widespread process that can also be used for high requirements, e.g. at Chassis of motor vehicles, has proven where it connects steel parts movable against each other. Surprisingly, it also delivers the combination of ceramic and steel for the applications considered here necessary properties. A homogeneous layer can be formed be that sticks on both sides and hardens so that it remains elastic in the mass. Or a finished elastic material layer is glued on both sides.

Durch Ausbildung einer Zwischenschicht, z.B. von etwa 0,5 -2 mm, kann auch das unterschiedliche Ausdehnungsverhalten der Fügepartner ausgeglichen werden. Die Wärmeausdehnungskoeffizienten von Keramik und Stahl unterscheiden sich nämlich beträchtlich. Bei starren Verbindungen kann allein das schon zu Problemen führen.By forming an intermediate layer, e.g. of about 0.5-2 mm, can do that too different expansion behavior of the joining partners are compensated. The The coefficients of thermal expansion of ceramic and steel differ considerably. With rigid connections this alone can lead to problems.

Günstig ist auch, daß die Temperaturen beim Vulkanisieren weit unter dem Schmelzpunkt der Fügepartner liegen. Es gibt noch einen weiteren Vorteil der Erfindung: In manchen Fällen ist es dadurch möglich, daß eine verschlissene Garnitur wieder aufgearbeitet werden kann, indem die Reste der Bearbeitungselemente entfernt und durch neue ersetzt werden.It is also favorable that the temperatures during vulcanization are far below that Melting point of the joining partners. There is another advantage to the Invention: In some cases it is possible that a worn set can be refurbished by removing the remains of the machining elements and be replaced by new ones.

Die Erfindung wird erläutert anhand von Zeichnungen. Dabei zeigen:

Fig. 1
eine erfindungsgemäß hergestellte Mahlgarnitur in geschnittener Seitenansicht;
Fig. 2
eine Mahlgarnitur in Aufsicht;
Fig. 3, 4 und 5
perspektivisch: Weitere erfindungsgemäß hergestellte Garnituren;
Fig. 6
Garnitur mit kegelstumpfförmigem Grundkörper;
Fig. 7
eine weitere Variante;
Fig. 8
Garnitur für Disperger oder Entstipper (Ausschnitt);
Fig. 9 bis 12
je eine weitere Mahlgarnitur (Ausschnitt).
The invention is explained with reference to drawings. Show:
Fig. 1
an inventive grinding set in a sectional side view;
Fig. 2
a grinding set under supervision;
3, 4 and 5
in perspective: further sets produced according to the invention;
Fig. 6
Set with a frustoconical base;
Fig. 7
another variant;
Fig. 8
Set for disperser or deflaker (detail);
9 to 12
one additional grinding set each (detail).

Zur Erläuterung des erfindungsgemäßen Verfahrens ist es zweckmäßig, die damit hergestellten Garnituren schematisch darzustellen.To explain the method according to the invention, it is appropriate to use it to represent the trimmings produced.

Fig. 1 zeigt in Seitenansicht den Grundkörper 1 mit einem Bearbeitungselement 2, das mit verschiedenen langen Leisten 4 versehen ist. Die kürzere ist geschnitten gezeichnet. Die Leisten des Bearbeitungselementes 2 stehen um den Überstand c hervor, wodurch eine Mahlgarnitur entsteht, die auch als Messergarnitur bezeichnet wird. An den Verbindungsflächen zwischen dem Bearbeitungselement 2 und dem Grundkörper 1 erkennt man eine bereits ausvulkanisierte Schicht 3, die aus einem zum Vulkanisieren geeigneten Polymer besteht. Diese Schicht ist eben und großflächig, was für das Vulkanisieren optimal ist. Der Grundkörper 1 ist durch nicht gezeigte, in der Regel lösbare Verbindungselemente am Rotor 8 der Mahlmaschine befestigt, welche wiederum durch die Welle 9 angetrieben wird. Selbstverständlich können die nach dem Verfahren hergestellten Garnituren auch an einem Stator befestigt sein.Fig. 1 shows a side view of the base body 1 with a processing element 2, the is provided with various long strips 4. The shorter one is cut. The strips of the processing element 2 protrude from the projection c, whereby a grinding set is created, which is also known as a knife set. To the Connection surfaces between the processing element 2 and the base body 1 one recognizes an already fully vulcanized layer 3, which from one for vulcanization suitable polymer. This layer is flat and large, what for that Vulcanization is optimal. The base body 1 is not through Shown, usually releasable connecting elements on the rotor 8 of the grinding machine attached, which in turn is driven by the shaft 9. Of course the sets produced by the method can also be attached to a stator his.

Fig. 2 zeigt eine ähnliche Garnitur in Aufsicht. Auch diese Darstellung ist nur schematisch. Man erkennt einen kreisringförmigen Grundkörper 1 mit den darauf befestigten Bearbeitungselementen 2. Diese tragen wiederum Leisten 4 mit der Breite b, sind hier gerade und zum Teil unterschiedlich lang. Solche Leisten haben eine Breite b zwischen 1 und 200 mm, vorzugsweise 1 bis 20 mm. Es sind auch gebogene Leisten vorstellbar. Die Schicht 3 kann den Grundkörper 1 auch dort bedecken, wo sich keine Bearbeitungselemente befinden. Das dient dann auch dem Korrosions- und Verschleißschutz.Fig. 2 shows a similar set in supervision. This representation is also only schematically. One recognizes an annular base body 1 with the one on it attached processing elements 2. These in turn carry strips 4 with the width b, are straight here and sometimes of different lengths. Such strips have a width b between 1 and 200 mm, preferably 1 to 20 mm. They are also curved strips imaginable. Layer 3 can also cover base body 1 where there are none Editing elements. This also serves the corrosion and Wear protection.

Das erfindungsgemäße Verfahren ist auch anwendbar, wenn keine mit Leisten versehenen Bearbeitungselemente, sondern - wie in Fig. 3 gezeigt - solche mit abrasiv poröser Oberfläche 5' eingesetzt werden sollen.The method according to the invention can also be used if none with strips provided machining elements, but - as shown in Fig. 3 - those with abrasive porous surface 5 'to be used.

Im in Fig. 4 gezeigten Beispiel sind im Grundkörper 1 Ausnehmungen 6 eingearbeitet, in die komplementäre Erhebungen 7 des Bearbeitungselementes 2' so hineinpassen, daß auf einer Seite ein Zentrierbund entsteht und ansonsten Raum für Dehnung oder zum Ausgleich von Toleranzen frei bleibt. Dadurch kann auch vor dem Befestigungsschritt eine exakte Positionierung des Bearbeitungselementes erfolgen und die Festigkeit der Verbindung erhöht werden. Dieser zusätzliche Aufwand kann aber in vielen Fällen entfallen. Wiederum ist die Schicht 3 an den Kontaktflächen der Fügepartner angedeutet. In anderen hier nicht gezeigten Fällen kann der in den Ausdehnungen frei bleibende Zwischenraum auch mit elastischem Material gefüllt werden.In the example shown in FIG. 4, recesses 6 are incorporated in the base body 1, fit into the complementary elevations 7 of the processing element 2 'so that A centering collar is created on one side and otherwise room for expansion or for Compensation for tolerances remains free. This can also be done before the fastening step an exact positioning of the processing element and the strength of the Connection will be increased. This additional effort can, however, in many cases omitted. Layer 3 is again indicated on the contact surfaces of the joining partners. In other cases not shown here, the one that remains free in the dimensions can Intermediate space can also be filled with elastic material.

In Fig. 5 ist eine mit Leisten versehene Garnitur perspektivisch dargestellt, bei der die einzelnen Leisten als Bearbeitungselemente 2 direkt auf eine ebene Fläche des Grundkörpers 1 befestigt sind. Für die exakte Positionierung der Bearbeitungselemente 2 kann mit Vorteil eine entsprechende Montagevorrichtung verwendet werden. In Fig. 5 a set with strips is shown in perspective, in which the individual strips as processing elements 2 directly on a flat surface of the Base body 1 are attached. For the exact positioning of the processing elements 2, a corresponding mounting device can be used with advantage.

In Fig. 6 ist schematisch der Teil eines Kegelrefiners zu sehen mit darin befindlichem Rotor 8', auf dem ein kegelstumpfförmiger Grundkörper 1' aufgesetzt ist. Dieser Grundkörper 1' enthält erfindungsgemäß aufgebrachte Bearbeitungselemente 2, von denen eines teilweise sichtbar ist. Die Bearbeitungselemente 2 sind durch eine Schicht 3 mit dem Grundkörper 1' verbunden. Auch der ebenfalls kegelstumpfförmige Stator dieser Maschine kann mit erfindungsgemäß hergestellten Garnituren versehen sein, muß es aber nicht.In Fig. 6 the part of a cone refiner can be seen schematically with inside Rotor 8 ', on which a frustoconical base body 1' is placed. This Base body 1 'contains machining elements 2, of applied according to the invention one of which is partially visible. The processing elements 2 are through a layer 3 connected to the base body 1 '. Also the frustoconical stator this machine can be provided with sets manufactured according to the invention, but it doesn't have to be.

Eine weitere Ausgestaltung von durch das erfindungsgemäße Verfahren hergestellten Garnituren zeigt die Fig. 7. Hierbei handelt es sich um ein den Grundkörper 1 bildendes Kreisringsegment, das auf einem Rotor 8 angebracht ist. Bei Montage der Maschine wird sowohl auf dem Rotor als auch auf dem Stator jeweils ein Ring aus solchen Segmenten zusammengesetzt. Das gezeigte Segment enthält radial hintereinander mehrere Gruppen von z. B. aufvulkanisierten Bearbeitungselementen 2. Die Aufteilung der Garnitur in verschiedene Bearbeitungselemente ist nach praktischen Überlegungen vorzunehmen, z.B. Handhabung und Herstellung der Bearbeitungselemente.A further embodiment of those produced by the method according to the invention 7 shows sets. This is a basic body 1 Annular segment, which is mounted on a rotor 8. When assembling the machine both on the rotor and on the stator, a ring of such segments composed. The segment shown contains several groups in radial order from Z. B. vulcanized processing elements 2. The division of the set in various processing elements must be carried out according to practical considerations, e.g. Handling and production of the processing elements.

Den Teil eines Bearbeitungselementes 2", das weniger zur Faserveränderung (Mahlung) als zur Dispergierung oder Entstippung des Faserstoffmaterials bestimmt ist, zeigt die Fig. 8. Dabei handelt es sich um eine hier exemplarisch dargestellte Form von Zahn-Ringgarnituren, wie sie in Dispergern oder Entstippern eingebaut werden. Solche Zahnringe werden oft aus einem speziellen verschleißfesten Material hergestellt und können komplett oder segmentweise auf dem Grundkörper durch Vulkanisieren befestigt werden. Auch bei solchen Garnituren können - hier nicht gezeigte - Ausnehmungen und Erhebungen angebracht sein, die die exakte Positionierung erleichtern und die Festigkeit der fertigen Garnitur weiter erhöhen.The part of a processing element 2 "that is less for fiber modification (grinding) as intended for the dispersion or deflaking of the fibrous material, shows the Fig. 8. This is a form of Toothed ring sets, such as those installed in dispersers or deflakers. Such Toothed rings are often made from a special wear-resistant material and can be completely or segmentally attached to the base body by vulcanization become. Even with such sets - not shown here - recesses and Elevations are attached, which facilitate the exact positioning and the strength increase the finished set further.

Denkbar ist auch die Anbringung von Verschraubungen 10 zwischen Grundkörper 1 und Bearbeitungselement 2, wie in Fig. 9, 10 und 11 an Beispielen einer Mahlgarnitur gezeigt ist. Gemäß Fig. 9 und 10 wird die Schraube in den Grundkörper 1 eingeschraubt. Die Durchgangsbohrung 11 durch das Bearbeitungselement 2 ist dabei weit genug, um eine begrenzte seitliche Ausgleichsbewegung zuzulassen. Das wichtige Maß der Garniturhöhe H ist jedoch klar fixiert. In Fig. 10 ist die Schicht 3 des Polymers auch in die Durchgangsbohrung und zum Schraubensitz geführt. Dieser zwar höhere Aufwand führt zu noch besserer Festigkeit der Garnitur.It is also conceivable to attach screw connections 10 between base body 1 and Processing element 2, as in Fig. 9, 10 and 11 using examples of a grinding set is shown. 9 and 10, the screw in the base body 1st screwed. The through hole 11 through the machining element 2 is there far enough to allow limited lateral compensation movement. The important However, the size of the clothing height H is clearly fixed. In Fig. 10, layer 3 of the Polymers also in the through hole and to the screw seat. This one though higher effort leads to even better strength of the clothing.

Anstelle der Schraubenverbindung kann auch eine Verbindung mit Hilfe einvulkanisierter Noppen 12 vorgesehen werden. Diese Lösung ist in Fig. 11 dargestellt. Die Noppen 12 sind mit Vorteil aus demselben Polymer wie die Schicht 3, die zwischen Bearbeitungselement und Grundkörper liegt. Sie sind elastisch und erhöhen auf einfache Weise die Festigkeit der Garnitur. Die Noppen werden z.B. separat hergestellt und vor dem Vulkanisieren in die entsprechenden Bohrungen des Bearbeitungselementes 2 bzw. Grundkörpers 1 gesteckt. Sie können auch schon vor dem Vulkanisieren mit der Polymerplatte fest verbunden sein und z.B. bei der Montage in den Bohrungen elastisch einrasten.Instead of the screw connection, you can also use a connection Vulcanized knobs 12 are provided. This solution is shown in Fig. 11. The knobs 12 are advantageously made of the same polymer as the layer 3, which is between Machining element and base body. They are elastic and increase on simple Way the strength of the set. The knobs are e.g. made separately and before the vulcanization into the corresponding bores of the processing element 2 or Basic body 1 inserted. You can also use the Polymer plate be firmly connected and e.g. elastic when mounting in the holes engage.

In anderen Schraubverbindungen kann das Gewinde in das Bearbeitungselement 2 eingelassen sein, wenn dessen Material dafür geeignet ist. Ein solcher Fall ist in Fig. 12 dargestellt. Dann wird die Bearbeitungsfläche nicht durch diese Schrauben beeinträchtigt.In other screw connections, the thread can be machined into the machining element 2 be let in if its material is suitable for it. Such a case is in FIG. 12 shown. Then the machining surface is not through these screws impaired.

Claims (31)

  1. Method for producing fittings for the mechanical processing of suspended fibrous material, in particular beating, which fittings comprise
    at least one basic body (1, 1') and
    at least one processing element (2, 2', 2") which is subject to a flow by the fibrous material suspension during operation of the fitting,
    processing element (2, 2', 2") and basic body (1, 1') being produced separately from each other,
    a binding agent being introduced between the contact faces,
    processing clement (2, 2', 2") and basic body (1, 1') being fitted together and
    being connected to each other by means of an attachment step which does not melt-on the processing elements (2, 2', 2"),
    characterised in that,
    an elastic bond is produced between processing elements (2, 2', 2") and basic body (1, 1') during the attachment step by means of a vulcanisation method, in which a polymer serves as binding agent.
  2. Method according to claim 1,
    characterised in that
    the temperature at the connection positions during the wlcanisation is set at 100 °Celsius to 150 °Celsius,
  3. Method according to claim 1 or 2,
    characterised in that
    the vulcanisation is implemented at an absolute pressure of at least 3 bar.
  4. Method according to one of the claims 1 to 3,
    characterised in that
    the vulcanisation is implemented in an air/water vapour atmosphere.
  5. Method according to one of the claims 1 to 4,
    characterised in that
    the polymer is a man-made rubber.
  6. Method according to one of the claims 1 to 5,
    characterised in that
    the polymer is formed into a plate and mounted on the basic body (1, 1'), in that the processing elements (2, 2', 2") are placed thereon and subsequently the vulcanisation is implemented.
  7. Method according to one of the preceding claims,
    characterised in that
    the binding agent forms a layer (3) of at least 0.5 mm thickness (a) after the attachment step.
  8. Method according to claim 7,
    characterised in that
    the binding agent forms a layer (3) of at least 1 mm thickness (a) after the attachment step.
  9. Method according to one of the preceding claims,
    characterised in that
    the processing elements (2, 2', 2") are produced at least partially from ceramic.
  10. Method according to claim 1 to 9,
    characterised in that
    the processing elements (2, 2', 2") are produced from a ceramic composite material.
  11. Method according to one of the preceding claims,
    characterised in that
    strips (4) are produced on the processing elements (2, 2') orientated towards the fibrous material side.
  12. Method according to claim 11,
    characterised in that
    the strips (4) maintain a projection (c) beyond the groove base which is between 2 and 20 mm.
  13. Method according to one of the claims 1 to 12,
    characterised in that
    the processing elements (2, 2', 2") are provided on their end face (5) with a substantially porous surface (5').
  14. Method according to one of the preceding claims,
    characterised in that
    at least one recess (6) is introduced into the basic body (1, 1'), into which an elevation (7) in the basic body fits during fitting together of processing element (2, 2', 2") and basic body (1).
  15. Method according to claim 14,
    characterised in that
    the elevation (7) fits into the recess (6) such that a gap remains free.
  16. Method according to claim 15,
    characterised in that
    the elevation (7) fits into the recess (6) such that a gap remains for the polymer, the width of which corresponds to the thickness (a) of the layer (3).
  17. Method according to one of the claims 1 to 13,
    characterised in that
    the basic body (1, 1') is provided with a continuous face, on which the binding agent is applied, on which in turn the processing elements (2, 2', 2") are retained by means of a device during the attachment step, as a result of which fitting together of recesses and complementary elevations in the assembly partners is unnecessary.
  18. Method according to one of the claims 1 to 13,
    characterised in that
    the binding agent is produced in the form of a material. web with elevations which project perpendicularly thereto at least on one side, preferably on both sides, the elevations being produced such that they fit into corresponding openings of the processing element (2, 2', 2") or of the basic body (1, 1') such that they are bonded to the contact faces of the openings by means of the vulcanisation.
  19. Method according to claim 18,
    characterised in that
    the elevations which project perpendicularly have thickenings which are elastically pressed together during penetration of the elevations into the processing element (2, 2', 2") or into the basic body (1, 1') and spring (snap connection) into corresponding widenings of the openings after fitting together and as a result fix the assembly partners in position during implementation of the attachment step.
  20. Method according to one of the claims 1 to 6,
    characterised in that,
    before the vulcanisation, knobs (12) which are produced from a polymer are inserted through borings which penetrate the processing element or the basic body (1, 1'), and in that the knobs (12) are bonded to the layer (3) by means of vulcanisation.
  21. Method according to one of the preceding claims,
    characterised in that
    the basic body (1, 1') is made of a steel alloy with a strength of at least 300 Newton per square millimeter.
  22. Method according to one of the preceding claims,
    characterised in that
    the basic body (1) is configured in a circular ring shape.
  23. Method according to one of the claims 1 to 21,
    characterised in that
    the shape of the basic body (1) is substantially that of a circular ring segment.
  24. Method according to one of the claims 1 to 21,
    characterised in that
    the basic body (1') has a truncated cone shape.
  25. Method according to one of the preceding claims,
    characterised in that
    the attachment step also includes the production of a screw connection (10).
  26. Method according to one of the preceding claims,
    characterised in that
    the attachment step also includes the production of a groove connection.
  27. Fitting for processing suspended fibrous material, which comprises a basic body (1,1') for mounting in a processing machine, and also at least one processing element, which is subject to a flow by the fibrous material suspension in the operation of the fitting and which can co-operate with another processing element (2, 2', 2") which is moved relative thereto, in order to achieve the processing effect,
    characterised in that
    the processing element (2, 2', 2") and basic body (1, 1') arc bonded to each other by means of an elastic layer (3) which is made of vulcanised polymer.
  28. Fitting according to claim 27,
    characterised in that
    the layer (3) has a thickness (a) of at least 0.5 mm.
  29. Fitting according to claim 28,
    characterised in that
    the layer (3) has a thickness (a) of at least 1 mm.
  30. Fitting according to claim 27, 28 or 29,
    characterised in that
    the processing element (2, 2', 2") and basic body (1) are made of different materials.
  31. , Fitting according to claim 27,
    characterised in that
    it is produced by means of a method according to one of the claims 1 to 26.
EP98118687A 1997-12-10 1998-10-02 Method for producing components for the mechanical processing of suspended fibre material as well as the produced components Expired - Lifetime EP0922495B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19754807A DE19754807C2 (en) 1997-12-10 1997-12-10 Process for the production of sets for the mechanical processing of suspended fibrous material and sets produced by the process
DE19754807 1997-12-10

Publications (2)

Publication Number Publication Date
EP0922495A1 EP0922495A1 (en) 1999-06-16
EP0922495B1 true EP0922495B1 (en) 2003-03-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118687A Expired - Lifetime EP0922495B1 (en) 1997-12-10 1998-10-02 Method for producing components for the mechanical processing of suspended fibre material as well as the produced components

Country Status (5)

Country Link
US (1) US6363601B1 (en)
EP (1) EP0922495B1 (en)
AT (1) ATE234156T1 (en)
BR (1) BR9806335A (en)
DE (2) DE19754807C2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI109135B (en) 1999-09-21 2002-05-31 Metso Paper Inc Method and apparatus for treating wood pulp
DE19955009C2 (en) * 1999-11-16 2001-10-18 Voith Paper Patent Gmbh Process for the production of sets for the mechanical processing of suspended fiber material
NZ511181A (en) * 2001-05-06 2002-10-25 Rocktec Ltd Improvements to rotor tips
DE10122556A1 (en) * 2001-05-10 2002-11-21 Voith Paper Patent Gmbh clothing support
DE10258324B4 (en) * 2002-12-13 2008-03-27 Voith Patent Gmbh Process for the production of sets for the milling of hydrous paper pulp
DE202004001620U1 (en) * 2004-02-04 2004-04-08 Voith Paper Patent Gmbh Grinding sets for paper pulp
CA2585070A1 (en) * 2004-10-21 2006-04-27 Welldone Weartec N.V. Crushing element and mills with grinding bodies, mixers, extruders and a pressing worm provided with said crushing elements
DE102006022886B4 (en) * 2006-05-15 2020-02-27 Pallmann Maschinenfabrik Gmbh & Co. Kg Device for comminuting feed material
DE102007044888B4 (en) * 2007-09-20 2010-09-16 Bhs-Sonthofen Gmbh Spin-toe wear unit
US8061643B2 (en) * 2007-12-06 2011-11-22 Andritz Inc. Refiner plate fixtures for quick replacement, and methods and assemblies therefor
US8342437B2 (en) * 2009-04-23 2013-01-01 Andritz Inc. Deflaker plate and methods relating thereto
DE102014108607A1 (en) * 2014-06-18 2015-12-24 Betek Gmbh & Co. Kg against cutting
DE102014009588A1 (en) 2014-06-27 2016-01-14 Andritz Fiedler Gmbh Set for mechanical working, in particular grinding of suspended pulp material
CN105536929B (en) * 2016-02-18 2017-12-12 辽宁英冠高技术陶瓷股份有限公司 Ceramic millstone for food attrition process
KR101738901B1 (en) 2017-03-02 2017-05-24 민병걸 Refiner bar plate having micro fine bar and method for manufacturing the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1013777A (en) * 1910-03-25 1912-01-02 J G Jackson Ltd Runner for grinding-machines.
US1710459A (en) * 1926-08-04 1929-04-23 Alfredo L Romero Combination rice husker and flour mill
US3128055A (en) * 1961-05-31 1964-04-07 Bauer Bros Co Refiner plate
US3139709A (en) * 1963-04-15 1964-07-07 Roy J Walters Segmented abrasive rim disc and method for making the same
US3462089A (en) * 1966-12-21 1969-08-19 Texas Instruments Inc Mechanical defibering means
DE2821194C2 (en) * 1978-05-13 1984-01-26 Abex Pagid Reibbelag Gmbh, 4300 Essen Brake body for disc brakes
DE19508202A1 (en) * 1995-03-08 1996-09-12 Voith Sulzer Stoffaufbereitung Grinding machine and grinding tool for grinding suspended fiber material
DE19603548A1 (en) * 1996-02-01 1997-05-07 Voith Sulzer Stoffaufbereitung Cheaper milling facings for the paper industry reducing overall costs

Also Published As

Publication number Publication date
BR9806335A (en) 1999-12-07
ATE234156T1 (en) 2003-03-15
US6363601B1 (en) 2002-04-02
EP0922495A1 (en) 1999-06-16
DE19754807C2 (en) 1999-11-18
DE59807458D1 (en) 2003-04-17
DE19754807A1 (en) 1999-06-24

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