EP1628789B1 - Production d'une tole structuree destinee a des dispositifs de traitement des gaz d'echappement - Google Patents

Production d'une tole structuree destinee a des dispositifs de traitement des gaz d'echappement Download PDF

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Publication number
EP1628789B1
EP1628789B1 EP04739422A EP04739422A EP1628789B1 EP 1628789 B1 EP1628789 B1 EP 1628789B1 EP 04739422 A EP04739422 A EP 04739422A EP 04739422 A EP04739422 A EP 04739422A EP 1628789 B1 EP1628789 B1 EP 1628789B1
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EP
European Patent Office
Prior art keywords
tool
sheet
metal strip
section
sheet metal
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 - Fee Related
Application number
EP04739422A
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German (de)
English (en)
Other versions
EP1628789A1 (fr
Inventor
Rolf BRÜCK
Ludwig Wieres
Jan Hodgson
Gottfried Wilhelm Haesemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10327455A external-priority patent/DE10327455A1/de
Priority claimed from DE200410001419 external-priority patent/DE102004001419A1/de
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP1628789A1 publication Critical patent/EP1628789A1/fr
Application granted granted Critical
Publication of EP1628789B1 publication Critical patent/EP1628789B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
    • 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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2814—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates all sheets, plates or foils being corrugated
    • 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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
    • 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
    • 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
    • Y10T29/496—Multiperforated metal article 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49828—Progressively advancing of work assembly station or assembled portion of work
    • Y10T29/49829—Advancing work to successive stations [i.e., assembly line]
    • 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
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part

Definitions

  • the present invention relates to a method and an apparatus for producing a structure in a smooth sheet-metal strip, which is used in particular for the production of exhaust gas treatment devices of mobile internal combustion engines.
  • Such components are, for example, filter elements for filtering out particles contained in the exhaust gas, adsorbers for at least temporary storage of pollutants contained in the exhaust gas (for example NO x ), catalytic converters (for example three-way catalyst, oxidation catalytic converter, reduction catalytic converter, etc.), diffusers for influencing the flow or turbulence of the exhaust gas flowing through, or also heating elements which heat the exhaust gas to a desired temperature just after the cold start of the internal combustion engine.
  • the following carrier substrates have proven successful in principle: ceramic honeycomb bodies, extruded honeycomb bodies and honeycomb bodies made of metal foils. Due to the fact that these carrier substrates are always to adapt to their functions, high-temperature-resistant and corrosion-resistant metal sheets are particularly well suited starting materials for the production.
  • honeycomb bodies with a plurality of at least partially structured sheets, which are subsequently introduced into a housing and thus form a carrier body which can be provided with one or more of the above-mentioned coatings.
  • the at least partially structured sheets are arranged so that substantially parallel to each other arranged channels are formed.
  • a part of the sheets is provided with a primary structure, which is characterized inter alia by a regular, repetitive structure, in particular a kind of sine wave structure, a sawtooth structure, a rectangular structure, a triangular structure, an omega structure od.
  • These sheets provided with the structure are then stacked (possibly alternately with smooth liners), wound together and inserted into a housing.
  • a honeycomb body is formed, which has substantially parallel channels.
  • secondary structures which include, for example, guide surfaces, microstructures, nubs, protrusions, wings, tabs, holes or the like.
  • guide surfaces for example, guide surfaces, microstructures, nubs, protrusions, wings, tabs, holes or the like.
  • a honeycomb body or a catalyst wherein a smooth sheet metal strip is processed by a punching tool and a corrugated tool and subsequently wound. Holes and corrugated structure are arranged independently of each other, so that a coordination of the tools to each other is not necessary.
  • a device in DE 41 30 673 A1 discloses, which structures a sheet metal strip by means of a punching tool and a corrugated tool, wherein between the two tools, a further feed is arranged, which engages in the introduced holes and feeds the sheet metal strip to the corrugated tool.
  • US 1,495,637 describes a metal strip forming machine which first introduces structures and subsequently holes in a sheet metal strip, wherein drive rollers in front of and behind the tools to produce the feed.
  • the technical problems mentioned at the outset are to be overcome by producing a very uniform configuration of the primary structure or secondary structure, so that errors during production can be minimized.
  • the possibility should be created to reduce the influence of inhomogeneities of the sheet metal strip used as a half tool in the production of such sheets in series production.
  • a particularly space-saving device should be specified.
  • step c) comprises the introduction of at least one hole in the first section and step d) generates a structure in the second section of the sheet-metal strip, wherein the second section is already provided with at least one hole.
  • the second tool engages during the step d) in the at least one hole.
  • the sheet metal strip is clamped by means of the second tool and a, the first tool prefixed, holding device.
  • the sheet metal strip consists of a high-temperature-resistant and corrosion-resistant material.
  • the material is based on iron and has at least one of the components aluminum, chromium and nickel. While the sheet metal strip has a length of many meters, the width of the sheet metal strip substantially already corresponds to the desired width, as required for the exhaust system. Usually, the width is in the range of less than 15 cm.
  • the sheet metal strip is usually rolled into a coil and is fed via conveyors.
  • the first section of the smooth sheet-metal strip is first processed by the first tool and finally fed to the second tool.
  • a step is described in which due to the spatial separation of the first tool and the second tool (edited by the first tool) first section is not directly supplied to the second tool, but this second tool processed another (second) section of the sheet metal strip.
  • the second section may have already been processed by the first tool, but it is also possible that the second section still includes a smooth area of the sheet metal strip.
  • the sections preferably extend over the entire width of the sheet metal strip and have a section length which is essentially oriented to the structure to be produced.
  • the section length of the first section and the second section is the same.
  • the section on the smooth sheet-metal strip essentially corresponds to the working area of at least one tool.
  • Tool is a generic term for various devices, apparatus, etc. specified for sheet metal forming.
  • step a) Due to the fact that the sheet-metal strip is continuously integrally formed, according to step a), the first section is transported to the first tool and a second section to the second tool in the desired feed direction at the same time. After step a) is thus in each case a portion of the sheet metal strip near the respective tool, which has not been processed by the first or second tool. Preferably, this first section or second section directly adjoins the section of the sheet metal strip that has just been processed in the feed direction.
  • step b) If this supply of the sheet metal strip was made in the desired position, the sheet metal strip according to step b) is stopped. Thus is ensures that no relative movement of the sheet metal strip takes place to the tools, while the following step c) is performed.
  • a sheet metal processing of the first portion of the sheet metal strip is performed with the first tool (step c)).
  • the "sheet metal processing” includes in particular sheet metal forming and separating manufacturing processes. Sheet metal transformations are characterized in particular in that the sheet metal strip is formed into planar hollow parts or structures, wherein after the processing step a substantially uniform material thickness is present, as it has been present before the processing step. This applies, for example, to the production processes of drawing, pressing, bending, etc. Other forming manufacturing processes can be hydroforming, superplastic forming, magnetic forming, etc. Under a sheet metal processing are also subsumed here methods for sheet separation, such as cutting or fine cutting, laser beam cutting, the water-abrasive jet cutting, etc.
  • step d) is carried out, in which a sheet metal processing of the second section takes place with the second tool.
  • step a) is carried out again, that is to say a (new) first section is fed to the first tool and a (new) second section is fed to the second tool.
  • the first machining step is carried out with the sheet metal strip resting, while the second machining step takes place simultaneously with a relative movement of the sheet metal strip to the tools.
  • step d) and step a) are superimposed in time. This has the consequence that a precise and precise for the sheet metal processing with the second tool precise feeding of the sheet metal strip is made possible.
  • the sheet metal processing with the second tool is such that it automatically generates a relative movement of the sheet metal strip to the second tool.
  • the combination of steps d) and a) simultaneously opens up a particularly rapid processing, so that very high feed rates of the sheet-metal strip can be realized.
  • feed speeds above 10 m / min meters per minute
  • feed speeds above 25 m / min or even over 50 m / min can be achieved.
  • step c) comprises the introduction of at least one hole in the first section and step d) creates a structure in the second section of the sheet metal strip, the second section is already provided with at least one hole.
  • step d) creates a structure in the second section of the sheet metal strip, the second section is already provided with at least one hole.
  • the second section which is here provided with a structure, was thus previously processed by a sheet-metal separating process.
  • hole is again as a generic term for a introduced into the metal strip separating edge of any shape, in particular a slot, an opening, a slot, a rectangle, etc ..
  • step d) is adapted accordingly. This can be ensured, for example, via the type of introduction of the structure or a special configuration of the second tool. Due to the fact that the at least one hole is very small compared to the entire second section, a very precise alignment of the hole is required to the second tool, which is made possible in particular by the combination of steps a) and d).
  • the second tool engages during the step d) in the at least one hole.
  • the intervention of the second tool is to be understood in particular as meaning that sheet metal forming takes place in the immediate vicinity of the hole, so that the area of the sheet metal strip adjacent to the hole is deformed.
  • the second tool can thus rest on the hole after forming and / or penetrate it at least partially.
  • This also means, inter alia, that the second tool and the section previously processed by step c) form a form fit when performing step d). Precisely with such a method or, in the case of the types of primary and / or secondary structures of very small extent described here, the precise feeding of the sections to the tools is therefore also guaranteed in the context of mass production.
  • a structure in the second section of the sheet-metal strip is produced in step d), which has a primary structure and a secondary structure.
  • the primary structure is preferably formed over the entire length of the sheet metal strip in a repetitive manner and advantageously also continuously in succession.
  • the secondary structure overlays the primary structure or only extends over a spatially limited subarea of the primary structure.
  • the secondary structure can, as already explained, include nubs, wings, edges or similar structures.
  • the secondary structure is used u. a influencing a flow of fluid guided along the surface of the sheet-metal strip so that turbulence or calming zones arise in which, on the one hand, a type of turbulent flow or a reduced flow velocity with respect to the fluid can be produced.
  • Concerning the implementation or design of such secondary structures is to be exemplified in WO 01/80978 A1 referenced, the content of which is fully made the subject of the disclosure
  • the sheet metal strip is clamped by means of the second tool and a, the first tool prefixed, holding device.
  • the holding device has the function, first of all, to relieve the upstream coil.
  • the holding device ensures that the metal strip is stretched between it and the second tool as the last forming work station, so sags, compressions or the like can be avoided. This supports a particularly precise feeding of sections of the sheet metal strip to the tools.
  • a holding device for example, brakes, friction linings or the like can be used.
  • step c) comprises punching a plurality of holes.
  • the production method stamping is assigned to the sheet metal separating production method, wherein a part or a knife of a piece of the material of the sheet metal strip is separated from other parts with a cutting edge or a knife.
  • material can be removed from the sheet-metal strip (formation of a recess, an opening, etc.) or even material only be pushed aside (as in the case of a slot, for example). It is also possible that in the first section openings and slots are introduced side by side.
  • the formation of the plurality of holes preferably takes place in rows and in particular over the entire width of the sheet-metal strip. For this purpose, several rows of holes at the same time or offset in time can be introduced to each other.
  • step d) comprises the corrugating of the sheet metal strip.
  • the sheet metal strip is passed through two rotating, intermeshing, intermeshing profile roller.
  • the corrugating rolls not only serve to produce a structure in the sheet-metal strip, but at the same time constitute the transport element with which the sheet-metal strip is conveyed or fed in a defined manner. This requires in particular that the rollers realize a feed of the sheet metal strip, in particular by generating a force in the feed direction on the sheet metal strip.
  • the steps a) to d) are repeated, the repetition rate being at least 5 hertz [ 1 / second].
  • repetition rates above 10 Hertz or even above 20 Hertz are preferred for mass production.
  • the repetition rate is a measure of the time intervals at which step a) is restarted.
  • a repetition rate of 5 Hertz means that the method steps a) to d) are repeated five (5) times in one second.
  • step c) it is also advantageous to bring the metal strip at least before step c) in contact with a fuel.
  • a fuel Under operating materials in this sense fall in particular oils, lubricants, coolants, etc.
  • the supplies are intended to support the processing or transformation of the metal strip or prevent jamming, jamming of the tools.
  • an apparatus for producing a structure in a smooth sheet-metal strip comprises at least a first tool for sheet metal processing and a second tool for sheet metal processing and is characterized in that the first tool and the second tool are arranged directly behind one another and the second tool comprises means for simultaneously carrying out a sheet metal forming and a sheet metal band feed
  • the device in particular suitable for carrying out the method according to the invention described above.
  • the first tool and the second tool are arranged directly one behind the other, so is dispensed with a separate feed to the tools.
  • the second tool represents by the machining process a Blechbandvortrieb both for itself, as well as for the upstream first tool. Accordingly, the second tool pulls the metal strip into the first tool.
  • the second tool on a clocked drive, each of which allows a feed in such a way that always the desired first portion is supplied to the first tool.
  • a particularly precise supply of the sheet metal strip is created because the retraction of the sheet metal strip by the second tool (regardless of other feeders), the relative distance of the first section and the second section is always kept constant.
  • the sheet metal forming preferably takes place simultaneously over the entire width of the sheet metal strip.
  • the first tool and the second tool form a distance in a feed direction of the sheet metal strip, which is smaller than 1000 mm [millimeters]. Preferably, this distance is even less than 500 mm or even less than 200 mm.
  • the omission of separate drives for the supply of the sheet metal strip allows a spatially very close to each other positioned first and second processing station (or tool). Ie. also, that the first sheet metal working and the second sheet metal working substantially be performed in a region of the sheet metal strip, which has only very slightly different material properties. This ensures that the sheet metal work carried out with the first tool is finally formed very precisely and precisely to the final position in the second tool. Thus, a very space-saving and precise working device is specified.
  • the apparatus further serves the first tool at least the production of at least one hole, in which engages the second tool, wherein the sheet metal strip by means of the second tool and a, the first tool veranographen, holding device is tensioned.
  • the first tool is a punching tool. This is used in particular for the introduction of holes, etc. in the sheet-metal strip, which subsequently allow the formation of complex structures with the second tool.
  • the punching tool has a stroke drive, which produces a working and an idle cycle
  • a stroke drive which produces a working and an idle cycle
  • the movement of the punching tool is performed only in part of this drive cycle
  • eccentrics, camshafts or similar devices may be used, which temporarily cause a movement of the punching knife, on the other hand, however, have a stoppage of the punching result.
  • the drives can be mechanical, hydraulic and / or electromagnetic type. This realizes the separation of steps c) and d) according to the method described above in a technically simple manner.
  • the second tool comprises meshing profile rollers.
  • the manufacturing process corrugating is performed.
  • the meshing profile rollers have a surface contour, which roll during the rotation substantially to each other. They preferably do not touch each other, but have a gap to each other, which is essentially the Sheet thickness of the metal strip corresponds. As a result, a particularly gentle Umformuilg the sheet metal strip is effected.
  • the second tool has a rotary drive, which provides a rotation clock frequency of at least 5 Hertz [ 1 / second ]. Due to the fact that the second tool at the same time determines the feed of the sheet metal strip, that acts as a kind of transport member, the rotational clock frequency of the rotary drive substantially corresponds to the repetition rate of the machining process.
  • the rotary drive advantageously allows even rotation clock frequencies above 10 hertz, in particular even above 20 hertz. For example, revolutions above 3,000 rpm and more may be present.
  • the device is to be designed so that at least the first tool or the second tool has a working zone that corresponds to a multiple of a width of the structure.
  • both the first tool and the second tool have the same work zone, which corresponds to a multiple of the width of the structure.
  • Very particularly preferred is the design of a working zone that corresponds substantially exactly to the simplicity of a width of the structure. This means that, for example, in the provision of meshing profile rollers, the working zone of a tooth of the profile roller, which ultimately determines the width of the structure, is created as the second tool
  • this structured sheet for producing an exhaust gas treatment apparatus for mobile internal combustion engines.
  • sheet here meant a cut to a certain length range of the sheet metal strip.
  • catalyst carrier bodies, adsorbers, particle filters, flow influencers, etc. are suitable for the exhaust gas treatment apparatus.
  • internal combustion engines diesel or gasoline engines of automobiles are particularly meant.
  • Fig. 1 shows schematically and simplifies the structure of a device for producing a structure 1 in a smooth sheet-metal strip 2.
  • the smooth sheet-metal strip 2 is supplied from a supply 20, which is shown here as a coil, the device.
  • the device which is mounted here in a common housing 22, comprises a first tool 4 for sheet metal processing and a second tool 6 for sheet metal processing.
  • the first tool 4 and the second tool 6 are arranged directly one behind the other.
  • a first section 3 the first tool 4 and a new second section 5 the second tool 6 supplied is supplied.
  • the second tool 6 which is formed here with meshing profile rollers 14, has a rotary drive 16, which thus implements the sole feed of the sheet-metal strip 2 in the device.
  • the first tool 4 is designed as a punching device and has a lifting drive 14.
  • the first tool 4 and the second tool 6 have a very small distance 13 to each other.
  • the sheet-metal strip is clamped by means of the second tool 6 and one, the first tool 4 prefixed, holding device 11, which is designed here as a brake or frictional resistance. Between the holding device 11 and the first tool 4, a roller 21 is also provided, with which a fuel 12 is applied to the surface of the sheet-metal strip 2.
  • Fig. 2 represents the movements of the tools during a work cycle.
  • the movement of the first tool 4 comprising a (punching) knife 23 and a camshaft 24 is shown.
  • the movement of the second tool 6 is shown greatly simplified, wherein the movement of the meshing profile rollers 15 is characterized.
  • Below these sketches there is a diagram of the path (s) covered by the respective tool over time (t). The two graphs shown are labeled "A" for the movement of the first Tool 4 and "B" for the movements of the second tool 6.
  • step c) of the method according to the invention in which sheet metal working of the first section of the sheet metal strip with the first tool 4 is started, is just beginning.
  • the camshaft 24 sets the knife 23 of the figure downwards in motion, so that the knife 23 penetrates into the sheet metal strip.
  • the knife 23 has reached its lowest point, the metal strip 2 thus completely penetrated. This is followed by an upward movement of the blade 23, until it has its original position, as already at the time (I), taken at the time (III).
  • the position of the profile wheels 15 has not changed to each other.
  • Fig. 3 shows schematically and in perspective a part of a metal strip 2 with a primary structure 9 and a secondary structure 10.
  • the sheet metal strip 2 comprises in the partial section shown a secondary structure 10, which is partially bounded by two holes 8, which are designed here as slots, wherein these Slits extend only in an inner region of the sheet-metal strip 2.
  • the secondary structure 10 projects out of the primary structure 9 of the sheet-metal strip 1.
  • the primary structure 9 is designed with wave crests 25 and troughs 26.
  • the Edge regions 27 of the slots are, as indicated, enlarged in the following Fig. 4.1, 4.2 and 4.3 shown.
  • the sheet-metal strip 2 is shown in a section which substantially corresponds to the working zone 17 of the first tool and the second tool.
  • Fig. 4.1, 4.2 and 4.3 show detailed views of a secondary structure 10, which is bounded by a hole 8.
  • the hole 8 allows the secondary structure 10 to be formed from the sheet metal strip 2 so that it emerges from the primary structure 9.
  • Fig. 4.1 is the edge region 27 shown as a simple slot.
  • Fig. 4.2 and 4.3 are provided in the edge region 27 of the hole 8 recesses 31.
  • the recesses 31 in Fig. 4.2 forms a circular arc 30 with a radius of curvature 32, which is preferably in the range of 0.2 mm to 0.4 mm.
  • the recess 31 is shown as an undercut.
  • the notch effect reducing, forms of the recesses 31 can also be used.
  • Fig. 5 schematically shows a metal strip 2, as it may be designed after processing by the first tool.
  • the sheet-metal strip 2 has a plurality of holes 8, which are arranged in rows 35 and in lines 34 to each other.
  • the openings 8 are made in the edge regions 27 with recesses 31, wherein the two recesses 31 are connected to each other via a slot 28. All holes 8 are arranged in an inner region 33 of the sheet-metal strip 2.
  • the holes 8 must now be aligned exactly to the second tool, since they at least partially define a secondary structure 10.
  • Fig. 6 shows a finished sheet 19 with a structure 1, which was produced by the method according to the invention or the device according to the invention.
  • the sheet 19 thus has a structure 1 (or primary structure), which is superimposed by a secondary structure 10.
  • the secondary structure 10 is formed here with guide surfaces 29, which limit the respective hole 8 in part.
  • the guide surfaces 29 are in both the Wellentälern 26 and arranged in the wave crests 25 and are each oriented opposite.
  • the structure 1 can be described by a height 36 and a width 18, where by height 36 is meant the distance from wave peak 25 to wave valley 26 and with width 18 the distance between two neighboring wave peaks 25 and wave troughs 26.
  • the ratio of width 18 to height 36 is preferably in a range of 2.0 to 1.3. In this way, channel densities of exhaust treatment devices can be formed ranging from 100 to 1000 cpsi ("cells per square inch", 6.45 channels / square inch equivalent to one channel / cm 2 ).
  • the method described here or the device proposed here allow a particularly precise guidance of the sheet metal strip during the production of very complex structures. At the same time, a particularly space-saving arrangement of the tools can accomplish and realize a high processing speed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Punching Or Piercing (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (12)

  1. Procédé destiné à la fabrication d'une structure (1) dans une bande de tôle lisse (2), comprenant au moins les étapes suivantes :
    a) alimenter un premier tronçon (3) d'une bande de tôle lisse (2) jusqu'à un premier outil (4) et un deuxième tronçon (5) de la bande de tôle (2) jusqu'à un deuxième outil (6) dans une direction d'avancement (7);
    b) arrêter la bande de tôle (2) ;
    c) effectuer un traitement de tôle du premier tronçon (3) de la bande de tôle (2) avec le premier outil (4), au moins un trou (8) étant rapporté dans le premier tronçon (3) ;
    d) effectuer un traitement de tôle du deuxième tronçon (5) de la bande de tôle (2) avec le deuxième outil (6), l'étape a) étant effectuée en même temps, et générer ensuite une structure (1) dans le deuxième tronçon (5) de la bande de tôle (2), le deuxième tronçon (5) étant déjà doté au moins d'un trou (8) et ensuite le deuxième outil (6) s'engageant dans l'au moins un trou (8), et dans quel cas la bande de tôle (2) est serrée au moyen du deuxième outil (6) et d'un dispositif de retenue (11) qui précède le premier outil (4).
  2. Procédé selon la revendication 1, dans lequel l'étape d) génère une structure (1) dans le deuxième tronçon (5) de la bande de tôle (2) qui a une structure primaire (9) et une structure secondaire (10).
  3. Procédé selon l'une des revendications précédentes, dans lequel l'étape c) comprend le poinçonnage d'une pluralité de trous (8).
  4. Procédé selon l'une des revendications précédentes, dans lequel l'étape d) comprend le laminage d'ondulations dans la bande de tôle (2)
  5. Procédé selon l'une des revendications précédentes, dans lequel les étapes a) à d) sont effectuées de façon répétée, la vitesse de répétition comportant au moins 5 Hertz [1/seconde]·
  6. Procédé selon l'une des revendications précédentes, dans lequel la bande de tôle (2) est mise en contact avec une matière de production (12) au moins avant l'étape c).
  7. Dispositif destiné à la fabrication d'une structure (1) dans une bande de tôle lisse (2), comprenant au moins un premier outil (4) pour le traitement de tôles et un deuxième outil (6) pour le traitement de tôles, caractérisé en ce que le premier outil (4) et le deuxième outil (6) sont agencés directement l'un derrière l'autre à une distance (13) plus courte que 1000 millimètres [mm] l'un par rapport à l'autre et que le deuxième outil (6) a des moyens pour réaliser en même temps la transformation d'une tôle et un avancement de bande de tôle et que par la suite le premier outil (4) sert au moins à la fabrication d'au moins un trou (8), dans lequel le deuxième outil (6) s'engage, la bande de tôle (2) étant serrée au moyen du deuxième outil (6) et d'un dispositif de retenue (11) qui précède le premier outil (4).
  8. Dispositif selon la revendication 7, caractérisé en ce que le premier outil (4) est un outil de poinçonnage.
  9. Dispositif selon la revendication 8, caractérisé en ce que l'outil de poinçonnage a un entraînement de levage (14), qui génère un cycle de travail et un cycle vide.
  10. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que le deuxième outil (6) comprend des cylindres profilés (15) qui s'engrènent.
  11. Dispositif selon la revendication 10, caractérisé en ce que le deuxième outil (6) a un entraînement rotatif (16) qui met à disposition une fréquence de cycles de rotation d'au moins 5 Hertz [1/seconde].
  12. Dispositif selon l'une des revendications 7 à 11, caractérisé en ce qu'au moins le premier outil (4) ou le deuxième outil (6) a une zone de travail (17) qui correspond à un multiple d'une étendue (18) de la structure (1).
EP04739422A 2003-05-30 2004-05-28 Production d'une tole structuree destinee a des dispositifs de traitement des gaz d'echappement Expired - Fee Related EP1628789B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10324889 2003-05-30
DE10327455A DE10327455A1 (de) 2003-06-18 2003-06-18 Verfahren und Vorrichtung zur Herstellung eines strukturierten Blechbandes
DE200410001419 DE102004001419A1 (de) 2003-05-30 2004-01-09 Herstellung eines strukturierten Bleches für Abgasbehandlungseinrichtungen
PCT/EP2004/005765 WO2004105978A1 (fr) 2003-05-30 2004-05-28 Production d'une tôle structurée destinée à des dispositifs de traitement des gaz d'échappement

Publications (2)

Publication Number Publication Date
EP1628789A1 EP1628789A1 (fr) 2006-03-01
EP1628789B1 true EP1628789B1 (fr) 2008-07-16

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US (2) US7637011B2 (fr)
EP (1) EP1628789B1 (fr)
DE (1) DE502004007616D1 (fr)
ES (1) ES2310290T3 (fr)
WO (1) WO2004105978A1 (fr)

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Also Published As

Publication number Publication date
US7637011B2 (en) 2009-12-29
EP1628789A1 (fr) 2006-03-01
DE502004007616D1 (de) 2008-08-28
ES2310290T3 (es) 2009-01-01
US20100043516A1 (en) 2010-02-25
US20060143919A1 (en) 2006-07-06
US8661670B2 (en) 2014-03-04
WO2004105978A1 (fr) 2004-12-09

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