EP1274924B1 - Device and method for producing a catalyst with a monolith having a polygonal cross-section - Google Patents
Device and method for producing a catalyst with a monolith having a polygonal cross-section Download PDFInfo
- Publication number
- EP1274924B1 EP1274924B1 EP01940310A EP01940310A EP1274924B1 EP 1274924 B1 EP1274924 B1 EP 1274924B1 EP 01940310 A EP01940310 A EP 01940310A EP 01940310 A EP01940310 A EP 01940310A EP 1274924 B1 EP1274924 B1 EP 1274924B1
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- EP
- European Patent Office
- Prior art keywords
- metal casing
- casing sheet
- monolith
- edge regions
- tension element
- 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
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Classifications
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- 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
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- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/02—Fitting monolithic blocks into the housing
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- 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
- Y10T29/49345—Catalytic device making
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- 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
- Y10T29/49908—Joining by deforming
- Y10T29/49909—Securing cup or tube between axially extending concentric annuli
- Y10T29/49913—Securing cup or tube between axially extending concentric annuli by constricting outer annulus
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- 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
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49927—Hollow body is axially joined cup or tube
-
- 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
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49927—Hollow body is axially joined cup or tube
- Y10T29/49929—Joined to rod
Definitions
- the invention relates to a method and an apparatus for producing a catalyst having a monolith having a polygonal cross-section.
- Polygon is to be understood here as the shape of a polygon whose corners are rounded.
- Automotive catalytic converters consist of a central, rod-shaped, ceramic honeycomb body, called Monolith, which is traversed in the longitudinal direction of many fine channels.
- the monolith is surrounded by the interposition of a so-called Blähmatte of mineral pulp from a jacket plate, in particular stainless steel.
- the jacket plate must be very tight over its entire circumference, so that especially during operation of the motor vehicle, the shock-sensitive material of the monolith is not damaged, no annoying rattling noises occur and the seal between the monolith and the jacket plate is ensured.
- the jacket sheet is cold at rest, however, very hot in the operating condition. As a result, the jacket sheet is subject to some expansion or shrinkage in the peripheral region.
- the invention has for its object to provide a method in which the above technical requirements are met even in a catalyst having a rounded polygonal shape in cross section. Furthermore, an apparatus for carrying out this method should be proposed.
- the invention enables the formation of the catalyst with a cross section which differs substantially from the ideal circular shape. Particularly suitable are rounded polygons with a large radius, since the monoliths can also be produced well in such a form. There is only a longitudinal seam for connecting the jacket plate, which can be very economically produced from separated from coil material boards. If an overlap of the edge areas to be joined is provided, even larger dimensional tolerances of the monolith or the board can be compensated for without any additional effort in the overlapping area. The edge areas of the shroud can then be in the overlap area with more or less overlap, e.g. under protective gas, to be welded. On the other hand, if the marginal areas lie exactly in shock to impact, additional welding material can be applied to the joint to make the connection.
- the jacket sheet is preformed at least almost to its final shape before its edge regions are brought into their connecting position and connected to each other.
- This preforming of the jacket plate can be carried out in an upstream, separate bending device.
- the preformed jacket sheet is clamped together with the Blähmatte and the polygonal monoliths in a jig so that the jacket sheet has now completely its intended end shape and the edge regions are in the connecting position, whereupon the edge regions are finally connected.
- An apparatus for carrying out the method according to the invention provides that a clamping device surrounds the jacket plate and comprises over its circumference at least two profile pieces which are connected to each other via at least one flexible tension member and are movable relative to one another via a power-operated device so that the circumference of the clamping device and so that the shroud is reduced, but it remains free between the profile pieces access to the edge regions to be joined together.
- the flexible tension member can be designed as desired. It can be at least partially z. As a rope, a chain or the like. If it is designed as a chain consisting of balls, rollers or eyelets, then the pressure piece can be said to act as a reinforced chain link, e.g. be shaped as a thicker ball or roller. Otherwise, the flexible tension member with the aid of a corresponding training also be guided over or through the arbitrarily shaped pressure piece, while maintaining its shape. If the pressure piece has a bulge toward the jacket sheet, a basically polygonal, but also a local, at least slightly concave formation of the jacket sheet can be ensured by gapless radial tension.
- the force applied to the tension member power-operated device may comprise tie rods, which are for example applied approximately tangentially to the jacket plate and alternately in the opposite direction.
- the device may include power operated toggle.
- the power-operated device may be mechanically, pneumatically or hydraulically actuated and controllable.
- the bending and / or clamping device may have at least one support for the tension member and / or for a pressure piece on the edge regions, and thus the weld, opposite side. Then, the shape of the support can be adapted to the shape of the tension member and / or the pressure piece.
- the profile pieces and / or the pressure pieces can be adapted in cross section to the final shape of the jacket plate.
- the device according to the invention ensures defined holding forces of the monolith to the jacket plate in a variety of polygonal, rounded cross sections. It thus allows a process-safe production of the catalyst with the circular shape also significantly deviating cross-section, which may have even slightly concave curved peripheral regions in the extreme case. Thus, a high adaptability to the available space is achieved: Due to the very flexible cross-sectional design of the given space can be maximally and thus optimally utilized, which is particularly advantageous in the automotive industry
- FIG. 1 shows the side view of a preassembled, in cross-section approximately triovalen catalyst with preformed and clamped in a jig, ready for welding jacket sheet.
- FIG. 2 shows the top view of the jig after FIG. 1 ,
- the catalyst 1 consists in Fig.1 initially from the central, rod-shaped, in cross-section triovale ceramic honeycomb body, the monolith 2 is called.
- the monolith 2 is surrounded by a so-called Blähmatte 3 of mineral pulp and a jacket plate 4 under bias.
- the jacket sheet consists of a Chromium-nickel steel, is cut from Cilmaterial to a board and was preformed in a bending device, not shown, in a nearly closed mold.
- the preformed jacket plate 4 is formed in mirror image in cross-section and includes differently curved, part-circular sections 5 to 11.
- the jacket plate 4 further comprises two overlapping edge portions 12 and 13 which extend in the longitudinal direction of the monolith 2 and are inseparably connected to each other.
- the tensioning device 14 comprises two profile pieces 15 and 16, which are connected to each other via a flexible, designed as a roller chain 17 tension member.
- the profile pieces 15 and 16 and the roller chain 17 wrap around the jacket plate 4 almost entirely leave only a gap 18 between the profile pieces 15 and 16 free. In this space 18, the edge regions 12 and 13 are superimposed, so that a welding seam can be produced with a welding torch 19 under inert gas.
- the profile piece 15 includes and presses on the portion 5 of the jacket plate 4.
- the roller chain 17 is articulated, which consists of a first chain portion 20 which presses on the section 7.
- the chain section 20 is articulated to a pressure piece 21 which presses on the section 9.
- a second chain portion 22 is articulated, which presses on the portion 11.
- a second pressure piece 23 is articulated, which presses on the portion 10.
- a third chain section 24 is articulated, which presses on the section 8.
- the third chain section 24 is finally articulated to the profile piece 16, which presses on the section 6.
- jacket plate 4 is applied radially over all sections 5 to 11 of its circumference and thus pressed together with the Blähmatte 3 against the monoliths 2.
- the pressing takes place uniformly, since the flexible chain sections 20, 22 and 24 evenly adapted to the relatively strongly curved portions 7, 11 and 8 of the jacket plate 4. Furthermore, the profile pieces 15 and 16 to the bend of the relatively weakly curved portions 5 and 6, the plungers 21 and 23 to the Bending the also relatively weakly curved sections 9 and 10 adapted, to the desired final shape of these sections.
- a support 25 is provided, on which the chain portion 22 can be supported, wherein the support 25 is adapted with its support surface 26 of the bend of the chain portion 22 and thus indirectly the bending of the section 11.
- the tensioning device 14 further comprises a power-operated device in the form of tie rods 27 and 28.
- the tie rods 27 and 28 are alternately hinged to the profile pieces 15 and 16, see also FIG. 2 , And are applied approximately tangentially to the jacket plate 4 by forces F. These forces F ensure the position of all components involved until the weld at the edge regions 12 and 13 is completed.
- the tie rods 27 and 28 may also be operated via toggle.
- the required forces can be generated mechanically, pneumatically or hydraulically.
- the invention has been described by way of example with reference to a so-called trioval cross section.
- the method according to the invention can be applied to a multiplicity of rounded, polygonal cross sections by expertly adapting the device.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur Herstellung eines Katalysators mit einem einen polygonen Querschnitt aufweisenden Monolithen. Unter polygon soll hier die Form eines Vielecks verstanden werden, dessen Ecken abgerundet sind.The invention relates to a method and an apparatus for producing a catalyst having a monolith having a polygonal cross-section. Polygon is to be understood here as the shape of a polygon whose corners are rounded.
Abgaskatalysatoren für Kraftfahrzeuge bestehen aus einem zentralen, stabförmigen, keramischen Wabenkörper, Monolith genannt, der in Längsrichtung von vielen feinen Kanälen durchzogen ist. Der Monolith wird unter Zwischenlage einer sogenannten Blähmatte aus mineralischem Faserstoff von einem Mantelblech, insbesondere aus Edelstahl, umgeben. Das Mantelblech muß über seinem gesamten Umfang sehr eng sitzen, damit insbesondere während des Betriebs des Kraftfahrzeugs das stoßempfindliche Material des Monolithen nicht beschädigt wird, keine lästigen Klappergeräusche auftreten und die Abdichtung zwischen dem Monolithen und dem Mantelblech sichergestellt ist. Hierbei ist auch zu berücksichtigen, daß das Mantelblech im Ruhezustand kalt, im Betriebszustand hingegen sehr heiß ist. Infolgedessen unterliegt das Mantelblech einer gewissen Ausdehnung bzw. Schrumpfung im Unfangsbereich.Automotive catalytic converters consist of a central, rod-shaped, ceramic honeycomb body, called Monolith, which is traversed in the longitudinal direction of many fine channels. The monolith is surrounded by the interposition of a so-called Blähmatte of mineral pulp from a jacket plate, in particular stainless steel. The jacket plate must be very tight over its entire circumference, so that especially during operation of the motor vehicle, the shock-sensitive material of the monolith is not damaged, no annoying rattling noises occur and the seal between the monolith and the jacket plate is ensured. It should also be noted that the jacket sheet is cold at rest, however, very hot in the operating condition. As a result, the jacket sheet is subject to some expansion or shrinkage in the peripheral region.
Derartige Katalysatoren wurden, offenbar aus Kostengründen, bisher nur mit kreisrunden Querschnitten hergestellt: Ist es doch allgemein bekannt, daß kreisrunde Querschnitte grundsätzlich am einfachsten abzudichten sind. Verschärfte gesetzliche Vorschriften und die Forderung nach besserer Bauraumausnutzung im Kraftfahrzeug lassen es jedoch heute wünschenswert erschienen, auch von der Kreisform abweichende, insbesondere die eingangs definierte polygone Form aufweisende Katalysatoren herzustellen. Aber auch bei solchen Formen muß das Mantelblech so eng den Monolithen umspannen, daß die Blähmatte für einen ausreichend festen, dichten Sitz und gleichzeitig für eine gewisse Dämpfung sorgen kann.Such catalysts were, apparently for cost reasons, previously produced only with circular cross-sections: It is well known that circular cross-sections are basically the easiest seal. Stricter legal regulations and the demand for better space utilization in the motor vehicle, however, make it desirable today to produce catalysts which also deviate from the circular shape and in particular have the polygonal shape defined at the outset. But even with such forms, the jacket plate must span so closely the monoliths that the Blähmatte can provide a sufficiently strong, tight fit and at the same time for a certain damping.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren aufzuzeigen, bei dem die genannten technischen Anforderungen auch bei einem Katalysator erfüllt werden, der im Querschnitt eine abgerundete polygone Form aufweist. Des weiteren soll eine Vorrichtung zur Durchführung dieses Verfahrens vorgeschlagen werden.The invention has for its object to provide a method in which the above technical requirements are met even in a catalyst having a rounded polygonal shape in cross section. Furthermore, an apparatus for carrying out this method should be proposed.
Die Erfindung löst diese Aufgabe durch die Merkmale der unabhängigen Ansprüche.The invention solves this problem by the features of the independent claims.
Die Erfindung ermöglicht die Ausbildung des Katalysators mit von der idealen Kreisform erheblich abweichendem Querschnitt. Besonders geeignet sind mit großem Radius abgerundete Polygone, da in solcher Form auch die Monolithen gut herstellbar sind. Es ergibt sich nur eine Längsnaht zur Verbindung des Mantelblechs, das sich sehr wirtschaftlich aus von Coilmaterial abgetrennten Platinen herstellen läßt. Wird eine Überlappung der zu verbindenden Randbereiche vorgesehen, lassen sich auch größere Maßtoleranzen des Monolithen oder der Platine ohne jeglichen zusätzlichen Aufwand im Überlappungsbereich ausgleichen. Die Randbereiche des Mantelblechs können dann im Überlappungsbereich mit mehr oder weniger Überdeckung, z.B. unter Schutzgas, verschweißt werden. Liegen die Randbereiche hingegen maßgenau Stoß an Stoß, kann zur Herstellung der Verbindung zusätzliches Schweißmaterial auf die Stoßstelle aufgebracht werden.The invention enables the formation of the catalyst with a cross section which differs substantially from the ideal circular shape. Particularly suitable are rounded polygons with a large radius, since the monoliths can also be produced well in such a form. There is only a longitudinal seam for connecting the jacket plate, which can be very economically produced from separated from coil material boards. If an overlap of the edge areas to be joined is provided, even larger dimensional tolerances of the monolith or the board can be compensated for without any additional effort in the overlapping area. The edge areas of the shroud can then be in the overlap area with more or less overlap, e.g. under protective gas, to be welded. On the other hand, if the marginal areas lie exactly in shock to impact, additional welding material can be applied to the joint to make the connection.
In der Regel wird das Mantelblech mindestens nahezu in seine Endform vorgeformt, bevor seine Randbereiche in ihre Verbindungslage gebracht und miteinander verbunden werden. Diese Vorformung des Mantelblechs kann in einer vorgeschalteten, separaten Biegevorrichtung durchgeführt werden. Dann wird das vorgeformte Mantelblech zusammen mit der Blähmatte und dem polygonen Monolithen in eine Spannvorrichtung so eingespannt, daß das Mantelblech nun völlig seine bestimmungsgemäße Endform aufweist und die Randbereiche sich in der Verbindungslage befinden, worauf schließlich die Randbereiche miteinander verbunden werden.As a rule, the jacket sheet is preformed at least almost to its final shape before its edge regions are brought into their connecting position and connected to each other. This preforming of the jacket plate can be carried out in an upstream, separate bending device. Then the preformed jacket sheet is clamped together with the Blähmatte and the polygonal monoliths in a jig so that the jacket sheet has now completely its intended end shape and the edge regions are in the connecting position, whereupon the edge regions are finally connected.
Bei der Vorformung wird das Mantelblech in der Biegevorrichtung in eine am Umfang mindestens nahezu geschlossene polygone Form vorgebogen.When preforming the jacket plate is bent in the bending device in a circumferentially at least almost closed polygonal shape.
Eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens sieht vor, daß eine Spannvorrichtung das Mantelblech umgibt und über dessen Umfang mindestens zwei Profilstücke umfaßt, die über mindestens ein flexibles Zugglied miteinander verbunden sind und über eine kraftbetätigte Vorrichtung so gegeneinander bewegbar sind, daß der Umfang der Spannvorrichtung und damit des Mantelblechs vermindert wird, dabei jedoch zwischen den Profilstücken ein Zugang zu den miteinander zu verbindenden Randbereichen frei bleibt.An apparatus for carrying out the method according to the invention provides that a clamping device surrounds the jacket plate and comprises over its circumference at least two profile pieces which are connected to each other via at least one flexible tension member and are movable relative to one another via a power-operated device so that the circumference of the clamping device and so that the shroud is reduced, but it remains free between the profile pieces access to the edge regions to be joined together.
Mit einer derartigen Spannvorrichtung wird eine hohe Prozeßsicherheit bei der Herstellung der Endform des Mantelblechs und damit bei der Herstellung seines dauerhaft sicheren Sitzes auf dem Monolithen erzielt, da die radialen Spannkräfte proportional der durch das Zugglied aufgebrachten Zugkraft sind.With such a clamping device, a high process reliability in the production of the final shape of the shroud and thus in the production of its permanently secure fit is achieved on the monolith, since the radial clamping forces are proportional to the tensile force applied by the tension member.
Soll ein bestimmter Umfangsbereich radial stärker beaufschlagt werden, so wird dort ein Druckstück vorgesehen, das von dem flexiblen Zugglied auf das Mantelblech gedrückt wird. Stattdessen kann das flexible Zugglied an dem betreffenden Umfangsbereich auch schon selbst das auf das Mantelblech einwirkende Druckstück beinhalten.If a certain circumferential area is to be applied radially more strongly, a pressure piece is provided there, which is pressed by the flexible tension member on the jacket plate. Instead, the flexible tension member at the respective peripheral area even already include the pressure piece acting on the jacket plate.
Das flexible Zugglied kann beliebig ausgebildet sein. Es kann mindestens abschnittsweise z. B. ein Seil, eine Kette oder dergleichen sein. Ist es als Kette, aus Kugeln, Rollen oder Ösen, ausgebildet, dann kann das Druckstück gewissermaßen als verstärktes Kettenglied , z.B. als dickere Kugel oder Rolle, geformt sein. Ansonsten kann das flexible Zugglied mit Hilfe einer entsprechenden Ausbildung auch über oder durch das beliebig geformte Druckstück geführt sein, wobei es seine Form beibehält. Weist das Druckstück eine Ausbuchtung zum Mantelblech hin auf, so kann eine grundsätzlich polygonale, aber auch eine örtliche mindestens leicht konkave Ausbildung des Mantelblechs durch lückenlose radiale Spannung sichergestellt werden.The flexible tension member can be designed as desired. It can be at least partially z. As a rope, a chain or the like. If it is designed as a chain consisting of balls, rollers or eyelets, then the pressure piece can be said to act as a reinforced chain link, e.g. be shaped as a thicker ball or roller. Otherwise, the flexible tension member with the aid of a corresponding training also be guided over or through the arbitrarily shaped pressure piece, while maintaining its shape. If the pressure piece has a bulge toward the jacket sheet, a basically polygonal, but also a local, at least slightly concave formation of the jacket sheet can be ensured by gapless radial tension.
Die auf das Zugglied einwirkende kraftbetätigte Vorrichtung kann Zugstangen umfassen, die z.B. etwa tangential zum Mantelblech und abwechselnd in entgegengesetzter Richtung beaufschlagt werden. Desgleichen kann die Vorrichtung kraftbetätigte Kniehebel umfassen.The force applied to the tension member power-operated device may comprise tie rods, which are for example applied approximately tangentially to the jacket plate and alternately in the opposite direction. Likewise, the device may include power operated toggle.
Die kraftbetätigte Vorrichtung kann mechanisch, pneumatisch oder hydraulisch betätigbar und steuerbar sein.The power-operated device may be mechanically, pneumatically or hydraulically actuated and controllable.
Die Biege- und/oder Spannvorrichtung kann auf der den Randbereichen, und damit der Schweißnaht, gegenüberliegenden Seite mindestens ein Auflager für das Zugglied und/oder für ein Druckstück aufweisen. Dann kann die Form des Auflagers der Form des Zuggliedes und/oder des Druckstückes angepaßt sein.The bending and / or clamping device may have at least one support for the tension member and / or for a pressure piece on the edge regions, and thus the weld, opposite side. Then, the shape of the support can be adapted to the shape of the tension member and / or the pressure piece.
Die Profilstücke und/oder die Druckstücke können im Querschnitt der Endform des Mantelblechs angepaßt sein.The profile pieces and / or the pressure pieces can be adapted in cross section to the final shape of the jacket plate.
Die erfindungsgemäße Vorrichtung stellt definierte Haltekräfte des Monolithen zum Mantelblech bei den verschiedensten polygonalen, abgerundeten Querschnitten sicher. Sie erlaubt somit eine prozeßsichere Fertigung des Katalysators mit von der Kreisform auch erheblich abweichendem Querschnitt, der im Extremfall sogar leicht konkav gewölbte Umfangsbereiche aufweisen darf. Damit wird eine hohe Anpassungsfähigkeit an den zur Verfügung stehenden Raum erzielt: Durch die sehr flexible Querschnittsgestaltung kann der vorgegebene Raum maximal und damit optimal ausgenutzt werden, was im Automobilbau besonders vorteilhaft istThe device according to the invention ensures defined holding forces of the monolith to the jacket plate in a variety of polygonal, rounded cross sections. It thus allows a process-safe production of the catalyst with the circular shape also significantly deviating cross-section, which may have even slightly concave curved peripheral regions in the extreme case. Thus, a high adaptability to the available space is achieved: Due to the very flexible cross-sectional design of the given space can be maximally and thus optimally utilized, which is particularly advantageous in the automotive industry
In der Zeichnung wird die Erfindung anhand eines Ausführungsbeispiels erläutert. Hierzu wird das Verfahren mit Hilfe der zugehörigen Vorrichtung schematisch dargestellt und näher beschrieben.In the drawing, the invention will be explained with reference to an embodiment. For this purpose, the method with the aid of the associated device is shown schematically and described in more detail.
Der Katalysator 1 besteht in
Das vorgeformte Mantelblech 4 ist im Querschnitt spiegelbildlich ausgebildet und umfaßt verschieden stark gebogene, teilkreisförmige Abschnitte 5 bis 11. Das Mantelblech 4 umfaßt des weiteren zwei sich überlappende Randbereiche 12 und 13, die in Längsrichtung des Monolithen 2 verlaufen und unlösbar miteinander zu verbinden sind.The preformed jacket plate 4 is formed in mirror image in cross-section and includes differently curved, part-
Monolith 2, Blähmatte 3 und Mantelblech 4 wurden in eine Spannvorrichtung 14 eingelegt. Die Spannvorrichtung 14 umfaßt zwei Profilstücke 15 und 16, die über ein flexibles, als Rollenkette 17 ausgebildetes Zugglied miteinander verbunden sind. Dabei umschlingen die Profilstücke 15 und 16 und die Rollenkette 17 das Mantelblech 4 fast ganz, lassen nur einen Zwischenraum 18 zwischen den Profilstücken 15 und 16 frei. In diesem Zwischenraum 18 liegen die Randbereiche 12 und 13 übereinander, so daß mit einem Schweißbrenner 19 unter Schutzgas eine Schweißnaht erzeugt werden kann.
Das Profilstück 15 umfaßt und drückt auf den Abschnitt 5 des Mantelblechs 4. An das Profilstück 15 ist die Rollenkette 17 angelenkt, die aus einem ersten Kettenabschnitt 20 besteht, der auf den Abschnitt 7 drückt. Der Kettenabschnitt 20 ist an ein Druckstück 21 angelenkt, das auf den Abschnitt 9 drückt. An das Druckstück 21 ist ein zweiter Kettenabschnitt 22 angelenkt, der auf den Abschnitt 11 drückt. An den Kettenabschnitt 11 ist ein zweites Druckstück 23 angelenkt, das auf den Abschnitt 10 drückt. An das zweite Druckstück 23 ist ein dritter Kettenabschnitt 24 angelenkt, der auf den Abschnitt 8 drückt. Der dritte Kettenabschnitt 24 ist schließlich an das Profilstück 16 angelenkt, das auf den Abschnitt 6 drückt.The
Es wird deutlich, daß das Mantelblech 4 über alle Abschnitte 5 bis 11 seines Umfangs radial beaufschlagt und somit zusammen mit der Blähmatte 3 gegen den Monolithen 2 gepreßt wird.It is clear that the jacket plate 4 is applied radially over all
Die Anpreßung erfolgt gleichmäßig, da sich die biegsamen Kettenabschnitte 20, 22 und 24 gleichmäßig an die relativ stark gekrümmten Abschnitte 7, 11 und 8 des Mantelblechs 4 anpassen. Des weiteren sind die Profilstücke 15 und 16 an die Biegung der relativ schwach gekrümmten Abschnitte 5 und 6, die Druckstücke 21 und 23 an die Biegung der ebenfalls relativ schwach gekrümmten Abschnitte 9 und 10 angepaßt, und zwar an die gewünschte Endform dieser Abschnitte.The pressing takes place uniformly, since the
Zur Abstützung der Baugruppe und der Spannvorrichtung 14 ist ein Auflager 25 vorgesehen, an dem sich der Kettenabschnitt 22 abstützen kann, wobei das Auflager 25 mit seiner Stützfläche 26 der Biegung des Kettenabschnitts 22 und damit indirekt der Biegung des Abschnitts 11 angepaßt ist.To support the assembly and the
Die Spannvorrichtung 14 umfaßt weiterhin eine kraftbetätigte Vorrichtung in Form von Zugstangen 27 und 28. Die Zugstangen 27 und 28 sind abwechselnd an den Profilstücke 15 und 16 angelenkt, siehe auch
Die Zugstangen 27 und 28 können auch über Kniehebel betätigt sein. Die erforderlichen Kräfte können mechanisch, pneumatisch oder hydraulisch erzeugt werden.The
Die Erfindung ist anhand eines sogenannten triovalen Querschnitts beispielhaft beschrieben worden. Das erfindungsgemäße Verfahren läßt sich aber durch fachmännische Anpassung der Vorrichtung auf eine Vielzahl von abgerundeten, polygonen Querschnitten anwenden.The invention has been described by way of example with reference to a so-called trioval cross section. However, the method according to the invention can be applied to a multiplicity of rounded, polygonal cross sections by expertly adapting the device.
- 11
- Katalysatorcatalyst
- 22
- Monolithmonolith
- 33
- Blähmatteexpanded mat
- 44
- Mantelblechshell plate
- 55
- Abschnitt von 4Section of 4
- 66
- Abschnitt von 4Section of 4
- 77
- Abschnitt von 4Section of 4
- 88th
- Abschnitt von 4Section of 4
- 99
- Abschnitt von 4Section of 4
- 1010
- Abschnitt von 4Section of 4
- 1111
- Abschnitt von 4Section of 4
- 1212
- Randbereich von 4Border area of 4
- 1313
- Randbereich von 4Border area of 4
- 1414
- Spannvorrichtungjig
- 1515
- Profilstückprofile piece
- 1616
- Profilstückprofile piece
- 1717
- Rollenkette, ZuggliedRoller chain, tension member
- 1818
- Zwischenraumgap
- 1919
- Schweißbrennerwelding torch
- 2020
- erster Kettenabschnittfirst chain section
- 2121
- erstes Druckstückfirst pressure piece
- 2222
- zweiter Kettenabschnittsecond chain section
- 2323
- zweites Druckstücksecond pressure piece
- 2424
- dritter Kettenabschnittthird chain section
- 2525
- AuflagerIn stock
- 2626
- Stützflächesupport surface
- 2727
- Vorrichtung, ZugstangeDevice, drawbar
- 2828
- Vorrichtung, ZugstangeDevice, drawbar
- FF
- Kräftepersonnel
Claims (14)
- Method for producing a catalytic converter (1) having a monolith (2) which has a polygonal cross section and which is tightly surrounded, with the interposition of a swellable mat (3), by a metal casing sheet (4), with the metal casing sheet (4) being composed of a single sheet-metal part,- the metal casing sheet (4) is bent into its intended final shape by a bending and/or clamping device (14) in such a way that those edge regions (12, 13) of said metal casing sheet (4) which run at least substantially in the longitudinal direction of the monolith (2) overlap or are at least in contact, and- the edge regions (12, 13) are non-detachably connected to one another in that, firstly,- the metal casing sheet (4) is pre-formed at least approximately into its final shape in a bending device (14), then- the pre-formed metal casing sheet (4) together with the expanding mat (3) and the monolith (2) are clamped in a clamping device (14) in such a way that the metal casing sheet (4) has its intended final shape and the edge regions (12, 13) are situated in the connecting position, and finally,- the edge regions (12, 13) are connected to one another, with- the clamping device (14) comprising two profiled pieces (15, 16) which are connected to one another by means of a flexible tension element (17), and- with the flexible sections of the tension element (17) adapting uniformly to the relatively sharply-curved sections (7, 11, 8) of the metal casing sheet (4) and with the profiled pieces (15, 16) adapting to the bend of the relatively gently-curved sections (5, 6),characterized in that the flexible tension element (17) comprises, in its peripheral profile, at least one pressure piece (21, 23) which acts on the metal casing sheet (4), with the pressure piece (21, 23) adapting to the bend of the likewise relatively gently-curved sections (9, 10).
- Method according to Claim 1, characterized in that the metal casing sheet (4) is pre-formed in the bending device (14) into an at least approximately peripherally closed shape.
- Device for producing a catalytic converter (1) having a monolith (2) which has a polygonal cross section and which is tightly surrounded, with the interposition of an expanding mat (3), by a metal casing sheet (4), with the metal casing sheet (4) being composed of a single sheet-metal part,- the metal casing sheet (4) is bent into its intended final shape by a bending and/or clamping device (14) in such a way that those edge regions (12, 13) of said metal casing sheet (4) which run at least substantially in the longitudinal direction of the monolith (2) overlap or are at least in contact, and- the edge regions (12, 13) are non-detachably connected to one another in that, firstly,- the metal casing sheet (4) is pre-formed at least approximately into its final shape in a bending device (14), then- the pre-formed metal casing sheet (4) together with the expanding mat (3) and the monolith (2) are clamped in a clamping device (14) in such a way that the metal casing sheet (4) has its intended final shape and the edge regions (12, 13) are situated in the connecting position, and finally,- the edge regions (12, 13) are connected to one another, with- the clamping device (14) comprising two profiled pieces (15, 16) which are connected to one another by means of a flexible tension element (17), and with- the flexible sections of the tension element (17) adapting uniformly to the relatively sharply-curved sections (7, 11, 8) of the metal casing sheet (4) and with the profiled pieces (15, 16) adapting to the bend of the relatively gently-curved sections (5, 6),characterized in that the flexible tension element (17) comprises, in its peripheral profile, at least one pressure piece (21, 23) which acts on the metal casing sheet (4), with the pressure piece (21, 23) adapting to the bend of the likewise relatively gently-curved sections (9, 10).
- Device according to Claim 3, characterized in that- the at least two profiled pieces (15, 16) are moved towards one another by means of a force-actuated device (27,28) in such a way that the periphery of the clamping device (14) and therefore of the metal casing sheet (4) is reduced but, in the process, a point of access (18) to the edge regions (12, 13) which are to be connected to one another is left free between the profile pieces (15, 16).
- Device according to one of Claims 3 to 4, characterized in that the flexible tension element (17) comprises, in its peripheral profile, at least one pressure piece (21, 23) which acts on the metal casing sheet (4).
- Device according to one of Claims 3 to 5, characterized in that the tension element (17) is formed at least in sections (20, 22, 24) as a chain.
- Device according to one of Claims 3 to 6, characterized in that the pressure piece (21, 22) is embodied as a reinforced chain link.
- Device according to one of Claims 4 to 7, characterized in that the force-actuated device comprises tension rods (27, 28).
- Device according to Claim 8, characterized in that the tension rods (27, 28) are acted on at least approximately tangentially with respect to the metal casing sheet (4) and alternately in opposite directions (F).
- Device according to Claim 8 or 9, characterized in that the force-actuated device comprises knee levers.
- Device according to one of Claims 4 to 10, characterized in that the force-actuated device can be actuated and controlled mechanically, pneumatically or hydraulically.
- Device according to one of Claims 4 to 11, characterized in that the bending and/or clamping device (14) has, on the side opposite the edge regions (12, 13), at least one support (25) for the tension element (17) and/or a pressure piece.
- Device according to Claim 1, characterized in that the support (25) is matched to the shape of the tension element (17) and/or of the pressure piece.
- Device according to one of Claims 1 to 13, characterized in that the profiled pieces (15, 16) and/or the pressure pieces (21, 23) are matched to the final shape of the metal casing sheet (4).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10018805 | 2000-04-15 | ||
DE10018805A DE10018805A1 (en) | 2000-04-15 | 2000-04-15 | Method and device for producing a catalyst with a monolith having a polygonal cross section |
PCT/EP2001/004064 WO2001079668A1 (en) | 2000-04-15 | 2001-04-10 | Device and method for producing a catalyst with a monolith having a polygonal cross-section |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1274924A1 EP1274924A1 (en) | 2003-01-15 |
EP1274924B1 true EP1274924B1 (en) | 2009-07-08 |
Family
ID=7638920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01940310A Expired - Lifetime EP1274924B1 (en) | 2000-04-15 | 2001-04-10 | Device and method for producing a catalyst with a monolith having a polygonal cross-section |
Country Status (6)
Country | Link |
---|---|
US (1) | US6912784B2 (en) |
EP (1) | EP1274924B1 (en) |
AT (1) | ATE435966T1 (en) |
AU (1) | AU2001273931A1 (en) |
DE (2) | DE10018805A1 (en) |
WO (1) | WO2001079668A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE294322T1 (en) * | 1999-07-13 | 2005-05-15 | Wimetal Sa | METHOD FOR PRODUCING CATALYSTS AND ARRANGEMENT FOR IMPLEMENTING THE METHOD |
DE10313155B4 (en) * | 2003-03-18 | 2013-02-14 | Volkswagen Ag | Process for the preparation of a catalytic converter |
DE102006041609A1 (en) * | 2006-09-05 | 2008-03-06 | Arvinmeritor Emissions Technologies Gmbh | Method and tool for producing an exhaust gas-conducting device |
DE102007023704A1 (en) * | 2007-05-22 | 2008-11-27 | Arvinmeritor Emissions Technologies Gmbh | Exhaust treatment device and method of manufacturing an exhaust treatment device |
US8893383B2 (en) * | 2007-06-01 | 2014-11-25 | Yutaka Giken Co., Ltd. | Method and apparatus for compressing a mat in exhaust gas cleaning device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US51636A (en) * | 1865-12-19 | Improved device for shrinking tire | ||
US1284375A (en) * | 1918-06-14 | 1918-11-12 | Grace Lee | Jar-cap renewer. |
US2483659A (en) * | 1946-09-03 | 1949-10-04 | Robert W Miller | Hose ferrule clamping machine |
GB1455855A (en) * | 1973-04-07 | 1976-11-17 | British Leyland Uk Ltd | Apparatus for fabricating a catalytic device for an exhaust system for an internal combustion engine |
CA1037238A (en) * | 1976-08-06 | 1978-08-29 | Jackson A. Smith | Fluid-actuated, cable-type sleeve crimper |
DE3929205A1 (en) * | 1989-09-02 | 1991-03-21 | Leistritz Ag | EXHAUST APPARATUS, IN PARTICULAR. EXHAUST GAS PURIFICATION DEVICE |
DE59408821D1 (en) * | 1993-12-31 | 1999-11-18 | Eberspaecher J Gmbh & Co | Exhaust treatment device |
DE19528947A1 (en) * | 1995-08-07 | 1997-02-13 | Boysen Friedrich Gmbh Co Kg | Device for the catalytic cleaning or decomposition of hot exhaust gases |
DE69712149T2 (en) * | 1996-10-15 | 2003-03-13 | Corning Inc., Corning | Method for producing a catalyst for an internal combustion engine |
DK0837299T3 (en) | 1996-10-21 | 2002-06-03 | Lufkin Europa B V | Device for attaching to a free end of a measuring tape |
EP0856646A1 (en) * | 1997-02-03 | 1998-08-05 | Corning Incorporated | Method of making a catalytic converter for use in an internal combustion engine |
DE19803063A1 (en) * | 1998-01-28 | 1999-07-29 | Eberspaecher J Gmbh & Co | Holding and insulating ceramic monoliths in vehicle exhaust gas unit |
DE19838750A1 (en) * | 1998-08-26 | 2000-03-02 | Volkswagen Ag | Process for the production of a catalyst housing by means of winding / tensioning technology |
-
2000
- 2000-04-15 DE DE10018805A patent/DE10018805A1/en not_active Withdrawn
-
2001
- 2001-04-10 AT AT01940310T patent/ATE435966T1/en not_active IP Right Cessation
- 2001-04-10 US US10/257,693 patent/US6912784B2/en not_active Expired - Fee Related
- 2001-04-10 EP EP01940310A patent/EP1274924B1/en not_active Expired - Lifetime
- 2001-04-10 WO PCT/EP2001/004064 patent/WO2001079668A1/en active Application Filing
- 2001-04-10 AU AU2001273931A patent/AU2001273931A1/en not_active Abandoned
- 2001-04-10 DE DE50114969T patent/DE50114969D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6912784B2 (en) | 2005-07-05 |
WO2001079668A1 (en) | 2001-10-25 |
AU2001273931A1 (en) | 2001-10-30 |
EP1274924A1 (en) | 2003-01-15 |
DE50114969D1 (en) | 2009-08-20 |
ATE435966T1 (en) | 2009-07-15 |
US20030159286A1 (en) | 2003-08-28 |
DE10018805A1 (en) | 2001-11-29 |
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