EP0336002A1 - Knit wire mesh and its production process, and device for carrying out the process - Google Patents

Knit wire mesh and its production process, and device for carrying out the process Download PDF

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Publication number
EP0336002A1
EP0336002A1 EP88105906A EP88105906A EP0336002A1 EP 0336002 A1 EP0336002 A1 EP 0336002A1 EP 88105906 A EP88105906 A EP 88105906A EP 88105906 A EP88105906 A EP 88105906A EP 0336002 A1 EP0336002 A1 EP 0336002A1
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EP
European Patent Office
Prior art keywords
wire mesh
monolith
mandrel
axial direction
wire
Prior art date
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Granted
Application number
EP88105906A
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German (de)
French (fr)
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EP0336002B1 (en
Inventor
Walter Dipl.-Ing. Seeger
Rüdiger Dipl.-Ing. Mussler
Reinhard Häfelein
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Roth Technik GmbH
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Roth Technik GmbH
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Application filed by Roth Technik GmbH filed Critical Roth Technik GmbH
Priority to AT88105906T priority Critical patent/ATE77677T1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F01N3/2867—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being placed at the front or end face of catalyst body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • 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
    • Y10T29/49398—Muffler, manifold or exhaust pipe making
    • 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
    • Y10T29/49801—Shaping fiber or fibered material
    • 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
    • Y10T29/49813—Shaping mating parts for reassembly in different positions

Definitions

  • the invention relates to a wire thread and a method for its production as well as a device for carrying out the method.
  • Catalytic coated, preferably cylindrical, ceramic monoliths are used for the exhaust gas detoxification of internal combustion engines. These monoliths are firmly stored in a housing, with the interposition of a wire mesh. In the known methods, the monolith is first provided with the wire mesh, then these two parts are inserted loosely into the two-part housing and the latter is pressed when it is closed. Attempts were initially made to stop the axial movement of the monolith resulting from the pulsating exhaust gas flow by means of radial forces in the form of pressed-in beads, but this has not proven successful. Excessively high pressures applied during manufacture involve the risk of damaging the ceramic monolith. If the pressures are too low, there is a risk of insufficient holding force.
  • a disadvantage of the catalysts produced by the known processes are the forces acting on the monolith, both during pressing in and during operation, so that the monolith does not come into contact with the housing due to the pulsating gas flow, such as occurs with exhaust gases from internal combustion engines is damaged.
  • the multiple wrapping of the monolith has the disadvantage that a high surface pressure occurs at the edge of the monolith due to the many layers and can therefore be damaged.
  • the invention is based on the object of proposing a wire mesh, a method for its production and a device for carrying out the method, with which a maximum degree of safety can be achieved for the monolith in the production of the catalyst and in its operation.
  • the flat, multiple wire-knitted wire knit preferably in the form of a tube, which is provided with oblique embossments, is wound onto a surface adapted to the jacket of the monolith, preferably a mandrel that corresponds in shape and dimension to the monolith .
  • the pre-tension between the monolith and the metal housing can be adjusted with the depth or the height of the impressions.
  • the wire mesh can also be wound directly onto the monolith and pressed there in the longitudinal direction, if an abutment that can be removed afterwards is only placed on the edges of the end faces when pressing, in order to absorb the pressing forces, so that damage to the monolith is not is to be feared.
  • the knitted wire is provided with impressions running at an acute angle to the circumferential winding direction before the winding, these cause a certain axial after the pressing Compress so that, despite the abutment, the compressed bead comes to rest against the face of the monolith.
  • the surface has a circumferential projection along the edges of its end face, which is correspondingly formed as an indentation on the bead to be pressed, there is the additional advantage that the particularly sensitive edges of the ceramic monolith do not lie directly against the wire mesh , but lie in the indentation created by the projection.
  • Fig. 1 the device is shown. It has a mandrel 10, the surface and surface of which form the surface 11 corresponds to the monolith 20 (FIGS. 3 and 4).
  • the wire mesh 21 is preferably unwound twice in the circumferential direction on the surface 11 of the mandrel 10.
  • the width of the knitted fabric is dimensioned such that there is an overhang 18 for the knitted wire mesh 21.
  • the mandrel is located in two axially open mold jaws 12, 13 which are movable towards one another and radially surround the mandrel with play. Through the two axial openings of the mold jaws 12, 13, sliding sleeves 14 penetrate as actual pressing tools, which are axially displaceable.
  • the mandrel 10 has two terminal fixed first shoulders 15 of smaller diameter in the region of the protrusion 18 of the wire mesh over the surface 11 of the mandrel 10.
  • the first paragraph 15 has a further second paragraph 16 with the smaller diameter than a guide for the sliding sleeve 14.
  • the actual projecting pressed parts of the sliding sleeve 14 lie on the surface of the shoulder 15 and have a projecting shoulder 14a on their front side which is at a distance from the annular end face 19 in the end position.
  • the shaping jaws 12, 13 also have an annular space 25 of larger diameter located in the area of the surface 11 of the mandrel 10, so that the knitted wire 21 is not compressed too much in this area when the shaping jaws 12, 13 are closed in the direction of arrow A (FIG. 2).
  • This annular space 25 is adjoined by a circumferential clamping projection 26 for holding the wire mesh 21 while the excess 18 is pressed together when the sliding sleeves 14 move together according to the direction arrow B.
  • the circumferential clamping projection 26 has an undercut 27 in the region of the - circumferential - edges 28 the surface 11 with the annular end face 19. The undercut 27 merges into an area 29 of the pressing tools 12, 13 with a smaller diameter than the area of the annular space 25.
  • This device produces a dimensionally stable wire knit (FIG. 3) with a bead 24 (FIG. 3), which can jump over the circumferential edge of each end face of the monolith 20 somewhat radially inward when it is pushed over the monolith, as in FIG Fig. 3 is shown.
  • the components prefabricated in this way are then inserted into the two-part housing 23 (FIG. 4) and, when they are connected, are permanently and reliably prevented from being damaged as a result of axial displacements of the monolith 20 in the pulsating gas stream.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The knitted wire mesh (21) is used as a sleeve for a catalytically coated, preferably cylindrical, ceramic monolith (20), which is used for detoxifying the exhaust gas of internal-combustion engines, and which has, on its two end faces, an inlet and outlet side for the exhaust gas and a jacket. The knitted wire mesh (21) is characterised by its stable-shaped, sleeve-like design with a circumferential bead (24) arranged on each of its two sides for overlapping the edge region of the inlet and outlet side of the monolith (20). <IMAGE>

Description

Die Erfindung betrifft ein Drahtgewinde und ein Verfahren zu dessen Herstellung sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a wire thread and a method for its production as well as a device for carrying out the method.

Zur Abgasentgiftung von Verbrennungsmotoren dienen katalytisch beschichtete, vorzugsweise zylindrische Monolithen aus Keramik. Diese Monolithen werden fest in einem Gehäuse gelagert, und zwar unter Zwischenlage eines Drahtgestricks. Bei den bekannten Verfahren wird zunächst der Monolith mit dem Drahtgestrick versehen, dann diese beiden Teile lose in das zweiteilige Gehäuse eingesetzt und dieses beim Schließen verpreßt wird. Es wurde zunächst die infolge des pulsierenden Abgasstromes entstehende Axialbewegung des Monolithen über Radialkräfte in Form von eingepreßten Sicken zu stoppen versucht, was sich aber nicht bewährt hat. Zu große, beim Herstellen aufgebrachte Drücke bergen nämlich die Gefahr der Beschädigung des aus Keramik bestehenden Monolithen. Bei zu geringen Drücken besteht die Gefahr einer zu geringen Haltekraft.Catalytic coated, preferably cylindrical, ceramic monoliths are used for the exhaust gas detoxification of internal combustion engines. These monoliths are firmly stored in a housing, with the interposition of a wire mesh. In the known methods, the monolith is first provided with the wire mesh, then these two parts are inserted loosely into the two-part housing and the latter is pressed when it is closed. Attempts were initially made to stop the axial movement of the monolith resulting from the pulsating exhaust gas flow by means of radial forces in the form of pressed-in beads, but this has not proven successful. Excessively high pressures applied during manufacture involve the risk of damaging the ceramic monolith. If the pressures are too low, there is a risk of insufficient holding force.

Es ist daher auch schon vorgeschlagen worden, die Ränder der Stirnseite umgreifende gesondere Bauteile in Form eines Ringes einzusetzen (DE-OS 24 12 863). Es ist auch schon vorgeschlagen worden, im Bereich der Stirnseiten ein mehrfach umgelegtes und dadurch verstärktes Draht­gestrick zum Auffangen der Axialkräfte des Monolithen einzusetzen (DE-OS 35 19 965).It has therefore already been proposed to use special components encompassing the edges of the end face in the form of a ring (DE-OS 24 12 863). It has also been proposed to use a multi-folded and therefore reinforced wire mesh in the area of the end faces to absorb the axial forces of the monolith (DE-OS 35 19 965).

Von Nachteil bei den nach den bekannten Verfahren her­gestellten Katalysatoren sind die auf den Monolith wirkenden Kräfte und zwar sowohl beim Einpressen als auch im Betrieb,damit durch die pulsierende Gasströmung, wie sie bei Abgasen von Verbrennungsmotoren auftritt , der Monolith durch die Berührung mit dem Gehäuse nicht beschädigt wird. Bei dem zuletzt genannten bekannten Verfahren, das Drahtgestrick mit umgelegter Randverstärkung einzusetzen,hat das mehrfache Umwickeln des Monolithen den Nachteil, daß am Rand des Monolithen durch die vielen Lagen eine hohe Flächenpressung auftritt und somit geschädigt werden kann.A disadvantage of the catalysts produced by the known processes are the forces acting on the monolith, both during pressing in and during operation, so that the monolith does not come into contact with the housing due to the pulsating gas flow, such as occurs with exhaust gases from internal combustion engines is damaged. In the last-mentioned known method of using the wire mesh with folded edge reinforcement, the multiple wrapping of the monolith has the disadvantage that a high surface pressure occurs at the edge of the monolith due to the many layers and can therefore be damaged.

Der Erfindung liegt die Aufgabe zugrunde, ein Drahtge­strick,ein Verfahren zu dessen Herstellung sowie eine Vorrichtung zur Durchführung des Verfahrens vorzuschlagen, mit denen ein Höchstmaß an Sicherheit für den Monolithen bei der Herstellung des Katalysators als auch in dessen Betrieb erzielbar ist.The invention is based on the object of proposing a wire mesh, a method for its production and a device for carrying out the method, with which a maximum degree of safety can be achieved for the monolith in the production of the catalyst and in its operation.

Diese Aufgabe wird durch den Gegenstand des Sach-, Verfahrens- und Vorrichtungshauptanspruchs gelöst.This object is achieved by the subject matter of the main claim in terms of property, process and device.

Es wird also erfindungsgemäß das ebene, mehrfach in einem Werkzeug geformte, gewickelte Drahtgestrick, vorzugsweise in Schlauchform, welches mit schräglaufenden Einprägungen versehen ist, auf eine dem Mantel des Monolithen angepaßte Oberfläche, vorzugsweise einen Dorn, der in Form und Abmessung dem Monolithen entspricht, aufgewickelt. Mit der Tiefe bzw. der Höhe der Einprägungen kann die Vorspannung zwischen dem Monolithen und dem Metallgehäuse eingestellt werden. Beim pressen des über dem Dorn überstehenden Überstandes des Metallgestricks in Axialrichtung werden an jedem der beiden Überstände ein Wulst erzeugt, der bezüglich des Masses des aufzunehmenden Monolithen sowohl in Axial­richtung als auch radial nach innen vorsteht. Dieses gesonderte, geformte Drahtgestrick wird dann mittels einer konischen Hülse über den Monolithen geschoben und danach die konische Hülse wieder entfernt, so daß der von dem Drahtgestrick umgebene Monolith nunmehr in das zweiteilige Gehäuse eingesetzt und in diese einge­setzten Lage dauerhaft sicher gehalten werden kann, wobei ein definiertes Axialmaß zwischen Monolithen und Gehäuse erzielt werden kann und nicht nur die elastische Lagerung in Radialrichtung zwischem dem Gehäuse und dem Monolithen erzeugt werden kann, sondern auch die axialen Kräfte aufgenommen werden können. Durch den Wulst können sowohl die Dichte, wie auch die elastischen Eigenschaften in Axialrichtung beeinflußt werden. ln­folgedessen können durch den Wulst und eine dort andere Elastizität als im übrigen Drahtgestrick die Längen­toleranzen zwischen dem Gehäuse und dem Monolithen auf­gefangen werden. Schließlich wird eine Abdichtung gegenüber einer unerwünschten Bypass-Strömung des Abgases erzielt. Zugleich ergibt sich eine gleichmäßige Flächenpressung in den Bereichen ohne Wulst des Drahtgestrickes auf den Monolithen.According to the invention, the flat, multiple wire-knitted wire knit, preferably in the form of a tube, which is provided with oblique embossments, is wound onto a surface adapted to the jacket of the monolith, preferably a mandrel that corresponds in shape and dimension to the monolith . The pre-tension between the monolith and the metal housing can be adjusted with the depth or the height of the impressions. When the protrusion of the metal knitted fabric projecting over the mandrel is pressed in the axial direction, a bead is produced on each of the two protrusions, which bead with respect to Dimension of the monolith to be included protrudes both in the axial direction and radially inwards. This separate, shaped wire mesh is then pushed over the monolith by means of a conical sleeve and then the conical sleeve is removed again, so that the monolith surrounded by the wire mesh can now be inserted into the two-part housing and permanently held in this position, a defined axial dimension between the monolith and the housing can be achieved and not only the elastic bearing in the radial direction between the housing and the monolith can be generated, but also the axial forces can be absorbed. Both the density and the elastic properties in the axial direction can be influenced by the bead. As a result, the length tolerances between the housing and the monolith can be absorbed by the bead and a different elasticity there than in the rest of the wire mesh. Finally, sealing against an undesired bypass flow of the exhaust gas is achieved. At the same time, there is an even surface pressure in the areas without a bead of wire mesh on the monoliths.

In alternativer Ausführungsform des erfindungsgemäßen Verfahrens kann das Drahtgestrick auch direkt auf den Monolithen aufgewickelt und dort in Längsrichtung ge­preßt werden, wenn nur beim Pressen auf die Ränder der Stirnseiten ein danach entfernbares Widerlager aufgesetzt wird, um die Preßkräfte aufzunehmen, so daß eine Beschädigung des Monolithen nicht zu befürchten ist. Wenn überdies das Drahtgestrick vor dem Aufwickeln mit spitzwinklig zur in Umfangsrichtung verlaufenden Wickelrichtung verlaufenden Einprägungen versehen ist, bewirken diese nach dem Pressen ein gewisses axiales Einfedern, so daß trotz der Widerlager der zusammenge­preßte Wulst fest zur Anlage an den Stirnseiten des Monolithen kommt. Alternativ oder zusätzlich ist es auch möglich, vor dem Pressen des Wulstes das Drahtgestrick in Axialrichtung etwas auseinanderzuziehen, um ein festes Anliegen des Wulstes durch Einfedern des Gestrickes nach dem Preßvorgang des Wulstes zu erzielen.In an alternative embodiment of the method according to the invention, the wire mesh can also be wound directly onto the monolith and pressed there in the longitudinal direction, if an abutment that can be removed afterwards is only placed on the edges of the end faces when pressing, in order to absorb the pressing forces, so that damage to the monolith is not is to be feared. If, moreover, the knitted wire is provided with impressions running at an acute angle to the circumferential winding direction before the winding, these cause a certain axial after the pressing Compress so that, despite the abutment, the compressed bead comes to rest against the face of the monolith. As an alternative or in addition, it is also possible to pull the knitted wire apart somewhat in the axial direction before pressing the bead in order to achieve firm contact of the bead by deflecting the knitted fabric after the pressing process of the bead.

Wenn in bevorzugter Ausführungsform die Oberfläche längs den Rändern ihrer Stirnseite einen umlaufenden Vor­sprung aufweist, der sich entsprechend als Eindrückung an dem zu pressenden Wulst abbildet, so ergibt sich der zusätzliche Vorteil, daß die besonders empfindlichen Ränder des Monolithen aus Keramik nicht direkt an dem Drahtgestrick anliegen, sondern in der durch den Vor­sprung erzeugten Eindrückung liegen.If, in a preferred embodiment, the surface has a circumferential projection along the edges of its end face, which is correspondingly formed as an indentation on the bead to be pressed, there is the additional advantage that the particularly sensitive edges of the ceramic monolith do not lie directly against the wire mesh , but lie in the indentation created by the projection.

Weitere zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further expedient refinements and developments of the invention are characterized in the subclaims.

Ein bevorzugtes Ausführungsbeispiel für die Vorrichtung zur Durchführung des Verfahrens und ein schematischer Verfahrensablauf ist in der Zeichnung dargestellt. ln dieser zeigt:

  • Figur 1 die Vorrichtung zur Durchführung des Verfahrens, im schematischen teil­weise abgebrochenen Querschnitt und der Anfangsstellung;
  • Figur 2 die Vorrichtung gemäß Fig. 1 in gleicher Darstellung und Preßend­stellung;
  • Figur 3 das über einen Monolithen gestreifte vorgeformte Drahtgestrick und
  • Figur 4 die Bauteile gemäß Fig. 3, im in das Gehäuse eingesetzten Zustand, im schematischen Halbschnitt.
  • Figur 5 die Einzelheit V gemäß Fig. 2.
A preferred embodiment of the device for carrying out the method and a schematic process sequence is shown in the drawing. This shows:
  • Figure 1 shows the device for performing the method, in schematic, partially broken cross-section and the initial position;
  • Figure 2 shows the device of Figure 1 in the same representation and press end position.
  • Figure 3 shows the preformed wire mesh striped over a monolith and
  • Figure 4 shows the components of FIG. 3, in the state inserted in the housing, in a schematic half-section.
  • FIG. 5 shows the detail V according to FIG. 2.

In Fig. 1 ist die Vorrichtung gezeigt. Sie weist einen Dorn 10 auf, dessen die Oberfläche 11 bildenden Mantel in Form und Ausmaß dem Monolithen 20 (Fig. 3 und 4) ent­spricht. Auf die Oberfläche 11 des Dorns 10 wird das Drahtgestrick 21 vorzugsweise zweimal in Umfangsrichtung abgewickelt. Die Breite des Gestrickes ist so bemessen, daß sich ein Überstand 18 für das Drahtgestrick 21 er­gibt. Der Dorn befindet sich in zwei aufeinanderzu be­weglichen und den Dorn mit Spiel radial umgebenden, axial offenen Formbacken 12, 13. Durch die zwei Axial­öffnungen der Formbacken 12, 13 greifen Schiebehülsen 14 als eigentliche preßwerkzeuge durch, welche axial verschiebbar sind.In Fig. 1 the device is shown. It has a mandrel 10, the surface and surface of which form the surface 11 corresponds to the monolith 20 (FIGS. 3 and 4). The wire mesh 21 is preferably unwound twice in the circumferential direction on the surface 11 of the mandrel 10. The width of the knitted fabric is dimensioned such that there is an overhang 18 for the knitted wire mesh 21. The mandrel is located in two axially open mold jaws 12, 13 which are movable towards one another and radially surround the mandrel with play. Through the two axial openings of the mold jaws 12, 13, sliding sleeves 14 penetrate as actual pressing tools, which are axially displaceable.

Der Dorn 10 weist zwei endständige feste erste Absätze 15 geringeren Durchmessers im Bereich des Überstandes 18 des Drahtgestrickes über die Oberfläche 11 des Dorns 10 auf. Der erste Absatz 15 weist einen weiteren zweiten Absatz 16 mit dem gegenüber geringeren Durchmesser als Führung für die Schiebehülse 14 auf. Die eigentlichen vorspringenden preßteile der Schiebehülse 14 liegen auf der Oberfläche des Absatzes 15 an und weisen einen vorspringenden Absatz 14a an ihrer Vorderseite auf, der in Endlage einen Abstand zur kreis­ringförmigen Stirnfläche 19 aufweist.The mandrel 10 has two terminal fixed first shoulders 15 of smaller diameter in the region of the protrusion 18 of the wire mesh over the surface 11 of the mandrel 10. The first paragraph 15 has a further second paragraph 16 with the smaller diameter than a guide for the sliding sleeve 14. The actual projecting pressed parts of the sliding sleeve 14 lie on the surface of the shoulder 15 and have a projecting shoulder 14a on their front side which is at a distance from the annular end face 19 in the end position.

Die Formbacken 12, 13 weisen ferner einen im Bereich der Oberfläche 11 des Dorns 10 befindlichen Ringraum 25 größeren Durchmessers auf, damit in diesem Bereich beim Zufahren gemäß Richtungspfeil A (Fig. 2) der Formbacken 12, 13 das Drahtgestrick 21 nicht allzusehr zusammenge­preßt wird. An diesen Ringraum 25 schließt sich ein in Ümfangsrichtung umlaufender Klemmvorsprung 26 zum Fest­halten des Drahtgestrickes 21 während des Zusammen­preßen des Überstandes 18 beim Zusammenfahren der Schiebehülsen 14 gemäß Richtungspfeil B. Der in Umfangs­richtung umlaufende Klemmvorsprung 26 weist eine Hinter­schneidung 27 im Bereich der - umlaufenden - Ränder 28 der Oberfläche 11 mit der kreisringförmigen Stirnfläche 19 auf. Die Hinterschneidung 27 geht in einen Bereich 29 der Preßwerkzeuge 12, 13 mit gegenüber dem Bereich des Ringraumes 25 geringeren Durchmesser über. Durch diese Vorrichtung wird ein in sich formstabil geformtes und mit einem Wulst 24 versehenes Drahtgestrick (Fig. 3) hergestellt, welches die umlaufende Kante jeder Stirnseite des Monolithen 20 etwas radial einwärts springend übergreifen kann, wenn es über den Monolith geschoben wird, wie das in Fig. 3 gezeigt ist. Die solchermaßen vorgefertigten Bauteile (Drahtgestrick mit Monolith) werden dann in das zweiteilige Gehäuse 23 eingesetzt (Fig. 4) und bei deren Verbindung dauerhaft und zuverlässig gegen Beschädigungen infolge von Axial­verschiebungen des Monolithen 20 im pulsierenden Gas­strom verhindert.The shaping jaws 12, 13 also have an annular space 25 of larger diameter located in the area of the surface 11 of the mandrel 10, so that the knitted wire 21 is not compressed too much in this area when the shaping jaws 12, 13 are closed in the direction of arrow A (FIG. 2). This annular space 25 is adjoined by a circumferential clamping projection 26 for holding the wire mesh 21 while the excess 18 is pressed together when the sliding sleeves 14 move together according to the direction arrow B. The circumferential clamping projection 26 has an undercut 27 in the region of the - circumferential - edges 28 the surface 11 with the annular end face 19. The undercut 27 merges into an area 29 of the pressing tools 12, 13 with a smaller diameter than the area of the annular space 25. This device produces a dimensionally stable wire knit (FIG. 3) with a bead 24 (FIG. 3), which can jump over the circumferential edge of each end face of the monolith 20 somewhat radially inward when it is pushed over the monolith, as in FIG Fig. 3 is shown. The components prefabricated in this way (wire mesh with monolith) are then inserted into the two-part housing 23 (FIG. 4) and, when they are connected, are permanently and reliably prevented from being damaged as a result of axial displacements of the monolith 20 in the pulsating gas stream.

Claims (23)

1. Drahtgestrick als Hülle für zur Abgasentgiftung von Verbrennungsmotoren dienenden, katalytisch beschichteten, vorzugsweise zylindrischen Monolithen aus Keramik, der an seinen beiden Stirnseite eine Eintritts- und Austrittseite für das Abgas sowie einen Mantel aufweist, gekennzeichnet durch eine formstabile, hülsenartige Ausbildung des Drahtge­stricks mit je einem an dessen beiden Seiten ange­ordneten, umlaufenden Wulst zum Übergreifen des Rand­bereiches der Eintritts- und der Austrittseite des Monolithen.1.Knitted wire as a sheath for catalytic coating, preferably cylindrical monoliths made of ceramic, serving for exhaust gas detoxification of internal combustion engines, which has an inlet and outlet side for the exhaust gas as well as a jacket on its two end faces, characterized by a dimensionally stable, sleeve-like configuration of the wire mesh with each a circumferential bead arranged on its two sides for gripping over the edge area of the inlet and outlet sides of the monolith. 2. Verfahren zur Herstellung eines hülsenartig ge­formten Drahtgestricks nach Anspruch 1 , vorzugsweise Schlauchgestricks als Hülle für zur Abgasentgiftung von Verbrennungsmotoren dienenden, katalytisch beschichteten, vorzugsweise zylindrischen Monolithen aus Keramik, wobei der zum nachfolgenden Einsatz in ein zweiteiliges Gehäuse als Katalysator dienende Monolith an seinen beiden Stirnseiten eine Eintritts­und eine Austrittseite für das Abgas sowie einen Mantel aufweist, mit folgenden Verfahrensschritten:
- Aufwickeln des Drahtgestrickes auf eine dem Mantel des Monolithen angepaßte Oberfläche in Umfangs­richtung, wobei das Drahtgestrick in Axialrichtung länger als die durch den Abstand der beiden Stirn­seiten des Monolithen bestimmte Länge ist sowie in Axialrichtung beidseitig über die Oberfläche als Überstand vorsteht;
- Festhalten des Drahtgestrickes auf der Oberfläche zumindest im unmittelbar an den Bereich des Über­standes angrenzenden Bereich;
- und Zusammenpressen des Überstandes bei im übrigen festgehaltenem Drahtgestrick in Axialrichtung auf ein vorgebbares Axialmaß zu einem Wulst.2. A method for producing a tubular knitted wire mesh according to claim 1, preferably tubular knitted fabric as a sheath for catalytically coated, preferably cylindrical, monoliths serving for exhaust gas detoxification of internal combustion engines made of ceramic, the monolith serving as a catalyst for subsequent use in a two-part housing has an inlet and an outlet side for the exhaust gas and a jacket on its two end faces, with the following process steps:
- Winding the knitted wire on a surface adapted to the jacket of the monolith in the circumferential direction, the knitted wire being longer in the axial direction than the length determined by the distance between the two end faces of the monolith and projecting in the axial direction on both sides of the surface as a projection;
- Holding the wire mesh on the surface at least in the area immediately adjacent to the area of the protrusion;
- And pressing together the supernatant with the otherwise knitted wire mesh in the axial direction to a predetermined axial dimension to form a bead. 3. Verfahren nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß das Drahtgestrick zumindest zweimal um die Oberfläche gewickelt wird.3. The method according to claim 1 or 2, characterized in that the wire mesh is wound at least twice around the surface. 4. Verfahren nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß das Drahtgestrick vor dem Aufwickeln mit spitzwinklig zur in Umfangsrichtung verlaufenden Wickelrichtung laufenden Einprägungen versehen ist.4. The method according to any one of claims 1 to 3, characterized in that the wire mesh is provided before winding with impressions running at an acute angle to the circumferential winding direction. 5. Verfahren nach Anspruch 4, dadurch ge­kennzeichnet, daß die Einprägungen in einem Winkel von 50 bis 70° zur Winkelrichtung ver­laufen.5. The method according to claim 4, characterized in that the impressions extend at an angle of 50 to 70 ° to the angular direction. 6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Einprägungen parallel zueinander verlaufen.6. The method according to claim 4 or 5, characterized in that the impressions run parallel to each other. 7. Verfahren nach einem der Ansprüche 1 bis 6, da­durch gekennzeichnet, daß als Oberfläche die Oberfläche eines Dorns verwendet wird.7. The method according to any one of claims 1 to 6, characterized in that the surface of a mandrel is used as the surface. 8. Verfahren nach einem der Ansprüche 1 bis 7, da­durch gekennzeichnet, daß das Drahtgestrick im unmittelbar an den Beginn des Über­standes angrenzenden Bereich festgehalten wird.8. The method according to any one of claims 1 to 7, characterized in that the wire mesh is held in the area immediately adjacent to the beginning of the protrusion. 9. Verfahren nach einem der Ansprüche 1 bis 8, da­durch gekennzeichnet, daß die Überstände gleichgroß sind.9. The method according to any one of claims 1 to 8, characterized in that the supernatants are of equal size. 10. Verfahren nach einem der Ansprüche 1 bis 9, da­durch gekennzeichnet, daß die Oberfläche bezüglich der Form dem Monolithen ent­spricht.10. The method according to any one of claims 1 to 9, characterized in that the surface corresponds in shape to the monolith. 11. Verfahren nach einem der Ansprüche 1 bis 10, da­durch gekennzeichnet, daß der jeweiligen Umfang der Oberfläche maximal so groß wie der betreffende Umfang des Monolithen sind.11. The method according to any one of claims 1 to 10, characterized in that the respective circumference of the surface is at most as large as the relevant circumference of the monolith. 12. Verfahren nach einem der Ansprüche 1 bis 11, da­durch gekennzeichnet, daß die Oberfläche maximal so groß wie die Länge des Monolithen ist.12. The method according to any one of claims 1 to 11, characterized in that the surface is at most as large as the length of the monolith. 13. Verfahren nach einem der Ansprüche 1 bis 12, da­durch gekennzeichnet, daß die Oberfläche längs den Rändern ihrer Stirnseiten einen umlaufenden Vorsprung aufweist.13. The method according to any one of claims 1 to 12, characterized in that the surface has a circumferential projection along the edges of its end faces. 14. Verfahren nach einem der Ansprüche 1 bis 13, da­durch gekennzeichnet, daß das Ausweichen des Drahtgestricks nach radial außen sowie in Axialrichtung im Bereich der Oberfläche beim Zusammenpressen in Axialrichtung durch einen Anschlag verhindert wird.14. The method according to any one of claims 1 to 13, characterized in that the deflection of the wire mesh to the radially outward and in the axial direction in the region of the surface when pressed together in the axial direction is prevented by a stop. 15. Verfahren nach einem der Ansprüche 1 bis 14, da­durch gekennzeichnet, daß das Drahtgestrick beim Zusammenpressen in Axialrichtung zugleich etwas radial nach innen gebogen wird.15. The method according to any one of claims 1 to 14, characterized in that the wire mesh is bent somewhat radially inwards when pressed together in the axial direction. 16. Verfahren nach einem der Ansprüche 1 bis 15, da­durch gekennzeichnet,daß das gepreßte Drahtgestrick über einen Monolith gezogen wird.16. The method according to any one of claims 1 to 15, characterized in that the pressed wire mesh is drawn over a monolith. 17. Verfahren nach Anspruch 16, dadurch ge­kennzeichnet, daß der mit einem ge­preßten Drahtgestrich versehene Monolith in ein Teil des Gehäuses eingelegt und danach das zweite Teil darüber gelegt und schließlich beide Teile zu dem Gehäuse miteinander verbunden werden.17. The method according to claim 16, characterized in that the monolith provided with a pressed wire coating is inserted into a part of the housing and then the second part is placed over it and finally both parts are connected to one another to form the housing. 18. Vorrichtung zur Durchführung des Verfahrens, insbe­sondere nach einem der Ansprüche 1 bis 17, ge­kennzeichnet durch einen Dorn (10) zur Aufnahme des Drahtgestricks (21) auf seinem die Oberfläche (11) bildenden Mantel, durch zwei aufeinanderzu bewegliche und den Dorn mit Spiel für das Drahtgestrick (21) radial umgebende, axial offene Formbacken (12, 13) und durch zwei die Axialöffnungen durchgreifenden Schiebehülsen als axial verschieb­liche, eigentliche Preßwerkzeuge.18. Device for performing the method, in particular according to one of claims 1 to 17, characterized by a mandrel (10) for receiving the wire mesh (21) on its surface (11) forming the sheath, by two mutually movable and the mandrel with play for the wire mesh (21), radially surrounding, axially open form jaws (12, 13) and by two sliding sleeves penetrating through the axial openings as axially displaceable, actual pressing tools. 19. Vorrichtung nach Anspruch 18, dadurch ge­kennzeichnet, daß der Dorn (10) zylindrisch mit zwei endständigen ersten Absätzen (15) geringeren Durchmessers für den Überstand (18) des Drahtgestrickes (21) ausgebildet ist.19. The apparatus according to claim 18, characterized in that the mandrel (10) is cylindrical with two terminal first shoulders (15) of smaller diameter for the protrusion (18) of the wire mesh (21). 20. Vorrichtung nach Anspruch 19, dadurch ge­kennzeichnet, daß jeder Absatz (15) einen weiteren Absatz (16) geringeren Durchmesser aufweist als Führung für die Schiebehülse (14).20. The apparatus according to claim 19, characterized in that each paragraph (15) has a further paragraph (16) smaller diameter than a guide for the sliding sleeve (14). 21. Vorrichtung nach einem der Ansprüche 18 bis 20, dadurch gekennzeichnet, daß die Oberfläche (11) des Dorns (10) längs ihrer durch den ersten Absatz (15) gebildeten Ränder einen Vor­sprung aufweist.21. Device according to one of claims 18 to 20, characterized in that the surface (11) of the mandrel (10) has a projection along its edges formed by the first paragraph (15). 22. Vorrichtung nach einem der Ansprüche 10 bis 21, dadurch gekennzeichnet, daß die kreisringförmige Stirnfläche (19) zum ersten Ab­satz (15) ein in einem Winkel ungleich 90° verläuft.22. Device according to one of claims 10 to 21, characterized in that the annular end face (19) to the first paragraph (15) extends at an angle not equal to 90 °. 23. Vorrichtung nach einem der Ansprüche 18 bis 23, dadurch gekennzeichnet, daß die Schiebehülse (14) einen vorspringenden Absatz (14a) aufweist.23. Device according to one of claims 18 to 23, characterized in that the sliding sleeve (14) has a projecting shoulder (14a).
EP88105906A 1988-04-05 1988-04-13 Knit wire mesh and its production process, and device for carrying out the process Expired - Lifetime EP0336002B1 (en)

Priority Applications (1)

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AT88105906T ATE77677T1 (en) 1988-04-05 1988-04-13 KNITTED WIRE, PROCESS FOR PRODUCTION THEREOF AND DEVICE FOR CARRYING OUT THE PROCESS.

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DE3811411 1988-04-05
DE3811411 1988-04-05

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AT (1) ATE77677T1 (en)
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DE4416055A1 (en) * 1994-05-02 1995-11-09 Leistritz Abgastech Process for the production of catalytic converters, in particular for motor vehicles
US6922891B1 (en) 2000-10-30 2005-08-02 Robert J. Marino, Jr. Method of manufacturing a catalytic converter
DE102007062661A1 (en) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG collector
DE102007062659A1 (en) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG Exhaust manifold and related manufacturing process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400443A1 (en) * 1974-01-05 1975-07-10 Erhardt Bischoff Fabrik Fuer K Catalytic exhaust gas cleaner - has catalytic material spaced from cylindrical housing by corrugated steel packing
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
WO1981000738A1 (en) * 1979-09-01 1981-03-19 Zeuna Staerker Kg Device for catalytically purifying exhaust gases from a combustion engine
DE3519965A1 (en) * 1985-06-04 1986-12-04 Fa. J. Eberspächer, 7300 Esslingen Arrangement for retention of a body which is arranged in a housing through which gas flows
GB2181966A (en) * 1985-08-23 1987-05-07 Honda Motor Co Ltd Assembly of an annular part to a column
EP0250384A1 (en) * 1986-06-16 1987-12-23 Sandvik Aktiebolag Device for purification of exhaust gases

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303806A (en) * 1965-05-17 1967-02-14 Plastic Can Corp Method for making metallic containers
GB1453439A (en) * 1973-01-13 1976-10-20 Ti Silencer Services Ltd Catalytic reactor for exhaust emission control
US3955643A (en) * 1974-07-03 1976-05-11 Brunswick Corporation Free flow sound attenuating device and method of making
JPS5817335B2 (en) * 1975-04-10 1983-04-06 トヨタ自動車株式会社 Method for manufacturing integrated catalyst component for exhaust gas purification
JPS5739054A (en) * 1980-08-20 1982-03-04 Musashi Seimitsu Kogyo Kk Forging method for forming tooth form on outer circumference of ring-shaped blank
JPS58179529A (en) * 1982-04-14 1983-10-20 Teruyuki Watanabe Forging method of tubular body having h-shaped sectional form

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400443A1 (en) * 1974-01-05 1975-07-10 Erhardt Bischoff Fabrik Fuer K Catalytic exhaust gas cleaner - has catalytic material spaced from cylindrical housing by corrugated steel packing
US4158037A (en) * 1977-05-16 1979-06-12 Chuo Hatsujo Kabushiki Kaisha Exhaust gas purifier for internal combustion engine
WO1981000738A1 (en) * 1979-09-01 1981-03-19 Zeuna Staerker Kg Device for catalytically purifying exhaust gases from a combustion engine
DE3519965A1 (en) * 1985-06-04 1986-12-04 Fa. J. Eberspächer, 7300 Esslingen Arrangement for retention of a body which is arranged in a housing through which gas flows
GB2181966A (en) * 1985-08-23 1987-05-07 Honda Motor Co Ltd Assembly of an annular part to a column
EP0250384A1 (en) * 1986-06-16 1987-12-23 Sandvik Aktiebolag Device for purification of exhaust gases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 39 (M-116)[917], 10. März 1982; & JP-A-56 154 115 (CHUO HATSUJIYOU K.K.) 28-11-1981 *

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US5018272A (en) 1991-05-28
EP0336002B1 (en) 1992-06-24
DE3872381D1 (en) 1992-07-30
ATE77677T1 (en) 1992-07-15

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