EP3469196A1 - Method for producing a honeycomb structure - Google Patents

Method for producing a honeycomb structure

Info

Publication number
EP3469196A1
EP3469196A1 EP17726272.2A EP17726272A EP3469196A1 EP 3469196 A1 EP3469196 A1 EP 3469196A1 EP 17726272 A EP17726272 A EP 17726272A EP 3469196 A1 EP3469196 A1 EP 3469196A1
Authority
EP
European Patent Office
Prior art keywords
web structure
mold plate
metal foil
web
winding
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.)
Granted
Application number
EP17726272.2A
Other languages
German (de)
French (fr)
Other versions
EP3469196B1 (en
Inventor
Alf NIEDMANN
Emmanuel KRAUS
Alexander MÖSELER
Ferdi Kurth
Harald Kraus
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 GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP3469196A1 publication Critical patent/EP3469196A1/en
Application granted granted Critical
Publication of EP3469196B1 publication Critical patent/EP3469196B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01N3/2803—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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F01N3/2026—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
    • 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
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • F01N2330/04—Methods of manufacturing
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/40—Honeycomb supports characterised by their structural details made of a single sheet, foil or plate
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-form

Definitions

  • a method for manufacturing a honeycomb structure The present invention relates to a method for the manufacture ⁇ development of a honeycomb structure.
  • the honeycomb structure is formed in particular by at least one, at least partially struc tured ⁇ metal foil which is stacked to form the honeycomb structure and / or wound and / or wound.
  • the honeycomb structure has at least partially flow channels, through which a fluid can flow through the honeycomb structure from a first end side to a second end side.
  • Partially structured means that the metal foil partially smooth, partially with z.
  • B. sinusoidal waves, with holes, with deflection structures or the like is executed.
  • the honeycomb structure is preferably used for the treatment of exhaust gas, in particular ⁇ re of exhaust gas of an internal combustion engine in a power ⁇ vehicle, z. As a car, a truck, a ship, an airplane, used.
  • the honeycomb structure has one or more air gaps, which extend along an axial direction, in particular from one end face to the other end face, wherein be ⁇ adjacent arranged metal foils are arranged electrically isolated by the air gap.
  • the air gap he ⁇ stretches additionally in a circumferential direction
  • the air gap is used for.
  • the electrical insulation in an electrically heated honeycomb body Through the air gap, the course of a current path through the honeycomb body is at least partially predetermined.
  • Such electrically heated honeycomb body with air gap are z. B. from WO 2013/150066 AI known.
  • the object of the invention is therefore to solve the problems described with reference to the prior art at least partially, and in particular to provide a method for producing a honeycomb structure with air gap, in which a uniform bias in the honeycomb structure is ensured before and during a connection process, a Destruction of the means for generating the air gap is avoided, the process is automatable and reuse of the means used to create the air gap is made possible.
  • a method for manufacturing a honeycomb structure comprising at least one at least partially structured metal foil, wherein the Me ⁇ tallfolie spaced in subregions of the honeycomb structure of an adjacently arranged metal sheet electrically insulated by an air gap is arranged, at least comprising the steps of:
  • the mold plate and in particular the first web structure are made of a temperature-resistant material, for. As a steel alloy, a ceramic or the like.
  • the ridge structure (including z., By a soldering process associated) preferably forms ⁇ to generate the air gap in the finished manufactured honeycomb structure.
  • the first web structure starting from a bearing surface of the mold plate, has a height in the axial direction, so that the metal foils to be arranged in the first web structure can penetrate far enough into the first web structure a fixed air gap along the axial direction with a constant width can be generated.
  • the first web structure extends in particular in the axial direction with preferably constant height.
  • the ridge structure extending in a plane parallel to the bearing surface, ie transversely to the axi ⁇ alen direction, in particular helically.
  • a ridge in the honeycomb structure can be specified by the web structure.
  • the at least one metal foil is arranged on the bearing surface and within the first web structure, ie between the walls of the first web structure.
  • the mold plate is supplied together with the at least one metal foil a joining step, in which the at least one metal foil is connected to each other for permanent formation of the honeycomb structure, wherein in a subsequent step e. the mold plate with the first web structure is removed from the honeycomb structure.
  • the joining step comprises a soldering process, preferably a soldering process, in which a solder material is melted at temperatures of 800 to 1200 ° C [degrees Celsius] and the adjoining and contacting metal foils are connected to one another at positions intended for this purpose.
  • This soldering process is known for the production of the honeycomb body described here.
  • the mold plate has a plurality of first openings, which extend in the axial direction through the mold plate, wherein a support pin can be performed through at least one of the first openings for arrangement in the honeycomb structure after step c.
  • the support pin is used in particular for the spacing of one, and for fixing the honeycomb structure by a so-called A support honeycomb body that is locatable downstream of or upstream of the honeycomb structure in a fluid (exhaust) conduit.
  • step c the method used in addition ei ⁇ ne winding spiral having a spiral shaped second ridge structure corresponding to the first ridge structure; wherein the second web structure is flush on a side facing the Formtel ⁇ ler first end side in the axial direction, wherein the second ridge structure has a pitch at the two ⁇ th end face, wherein the second end side from a center of the second ridge structure along the spiral windings continuously approaches the first end face; and wherein the winding spiral has at least two pins extending from the
  • the winding spiral enables an automated arrangement of the at least one metal foil in the first web structure.
  • This process is explained in detail in the following figure description.
  • a second web structure extends in a spiral shape, on the one hand along a circumferential direction and in a radial direction from the outside in and on the other with each turn in the axial direction.
  • the pitch of the helical second web structure allows for rotation of the winding spiral a metal foil (or the stack of metal foils) is from ⁇ continuously wound from the center gradually spirally and more and more windings (starting from an innermost angular extension in the center towards a outermost turn) are recorded in the second web structure.
  • the second web structure also forms the Notice ⁇ agreed air gaps in the honeycomb structure.
  • the web structure corresponds at least substantially to the shape of the first web structure (in a plane transverse to the axial direction).
  • the at least one metal foil from the winding spiral along the axial direction in the first
  • the winding spiral has entrainment pins extending from the second web structure on the first end side and extending into second openings in the first web structure and / or in the mold plate and / or into first openings in the mold plate.
  • driver pins ensure an aligned arrangement of the first web structure and the second web structure. Furthermore, the rotational movement of the mold plate and the winding spiral for winding up the at least one metal foil can thus be coupled.
  • step c in addition, to use a winder 1 having a helically extending slot corresponding to the second land structure; wherein during the rotation of the winding spiral the winding spiral with the second web structure and starting with the center dips into the slot and so arranged between the reel disc and the winding spiral at least one metal foil is successively introduced along the axial direction in the winding coil and finally transferred to the first web structure.
  • the reel disc is particularly flat, so that the at least one metal foil is preferably guided in its entire extent along the axial direction.
  • the movement along the axial direction is coupled and / or synchronized with the rotation of the winding plate and the mold plate.
  • the at least one at least partially structured metal foil forms a multilayer stack before being arranged in the first web structure.
  • a metal foil is folded several times to form a stack.
  • metal foils are disposed on ⁇ each other to form a stack.
  • a winding device for carrying out a method according to the invention, at least comprising a mold plate with a first web structure.
  • the winding device further comprises at least one winding spiral with a second web structure and a winding plate.
  • FIGS. show particularly preferred embodiments of the invention, but these are not based on it. is limited.
  • the same components are provided in the figures with the same reference numerals. They show schematically:
  • Fig. 1 a stack of metal foils in a perspective view
  • Fig. 2 a mold plate in a perspective view
  • FIG. 3 shows a honeycomb structure and a mold plate in a perspective view
  • FIG. 4 shows a finished fabricated honeycomb structure with air ⁇ gap in perspective view
  • 5 shows a second mold plate in a perspective view
  • FIG. 6 shows a winding device in an exploded view and in a perspective view.
  • FIG. 1 shows a stack 24 of metal foils 2 in a perspective view and the method step a.
  • Fig. 2 shows a mold plate 5 in a perspective view and the method step b.
  • the mold plate 5 has a ⁇ ers te ridge structure.
  • the first web structure 8 forms the air gap 4 to be produced in the finished manufactured honeycomb structure 1 (ie also connected, for example, by a soldering process) (see FIG. 4).
  • the first web structure 8 starting from the support surface 6 of the mold plate 5, in the axia ⁇ len direction 7 a height, so that in the first
  • Web structure 8 to be arranged metal foils 2 can dive far enough into the first web structure 8, so a fixed air gap 4 along the axial direction 7 with a constant width can be generated (see Fig. 3).
  • the first web structure 8 extends in a plane 9 parallel to the support surface 6, ie transversely to the axial direction 7.
  • the mold plate 5 has a plurality of first openings 10, which extend in the axial direction 7 through the mold plate 5, wherein at least one of the first openings 10, a support pin 11 is feasible for arrangement in the honeycomb structure 1 after step c.
  • FIG. 3 shows a mold plate 5 and a honeycomb structure 1 arranged thereon in a perspective view and method step c.
  • the first web structure 8 extends here in the axial direction 7 with a constant height.
  • the first honeycomb structure 1 here comprises a plurality of at least teilwei ⁇ se structured metal foils 2, wherein individual metal foils spaced 2 in partial regions 3 of the honeycomb structure 1 is electrically insulated from an adjacently disposed metal sheet 2 by an air gap 4 are arranged.
  • the mold plate 5 is supplied together with the at least one metal foil 2 to a connecting step, in which the at least one metal foil 2 is connected to one another for permanent formation of the honeycomb structure 1.
  • step e the mold plate 5 with the first web structure 8 has been removed from the honeycomb structure 1.
  • Fig. 5 shows a second mold plate 5 in a perspective view.
  • the comments on Fig. 2 apply accordingly.
  • a plurality of first openings 10 are vorgese ⁇ hen, extending in the axial direction 7 through the mold plate 5.
  • the first web structure 8 comprises a plurality of turns 18 and further includes second apertures 21, in which follower pins 20 of the winding scroll 12 Kgs extend ⁇ NEN (see Fig. 6).
  • Fig. 6 shows a winding device 25 in Explosionsdarstel ⁇ lung and in a perspective view.
  • the winding device 25 shown here is in step c. of the method is ⁇ sets.
  • the winding device 25 comprises a receptacle 26 which is drivable in at least one circumferential direction 27.
  • the winding device 25 comprises a mold plate 5, a winding coil 12 and a reel disc 22nd
  • the winding spiral 12 has a spiral second
  • Mold plate 5 corresponds; wherein the second web structure 13 is flush in the axial direction 7 on a first end face 14 facing the mold plate 5, wherein the second web structure 13 has a slope 16 on the second end face 15.
  • the stack 24 of metal foils 2 is received between the two pins 19 and continuously received by rotation of the winding coil 12 in the second web structure 13 and then transferred into the first web structure 8.
  • the winding coil 12 thus enables an automated Anord ⁇ voltage of the at least one metal foil 2 in the first
  • a second web structure 13 extends spirally, first along a circumferential direction 27 and in a radial direction 28 of FIG outside to inside and the other with each turn 18 also in the axial direction 7.
  • Web structure 13 terminates flush with the first Stirnsei ⁇ te 14, wherein the second web structure 13 on the two ⁇ th end face 15 with a slope 16 along along the axial direction 7 extends, so that a center 17 is arranged on the second end face 15 of the second web structure at a greatest distance from the first end face 14.
  • the slope 16 of the spiral second web structure 13 enables light that the metal ⁇ foil 2 (or the stack 24 of metal foils 2) starting from the center 17 is successively wound spirally on rotation of the winding coil 12 and more and more windings 18 (starting from an innermost turn 18 in the center 17 to an outermost turn 18) in the second web structure 13.
  • the second ridge structure 13 forms also the terme ⁇ voted air gaps 4 in the honeycomb structure 1, corresponding to the second ridge structure 13 at least substantially the shape of the first web structure 8 (in a plane transverse to the axial direction 9 7).
  • the winding coil 12 along the axial direction 7 in the first web structure 8 of the molding plate 5 at least one metal foil 2 and the Wi ⁇ ckelspirale 12 are further used for the next winding operation.
  • winding spiral 12 is different from the second
  • driving pins 20 ensure an aligned arrangement of first web structure 8 and second web structure 13. Further, the rotational motion of receptacle 26, shape plate 5 and the winding coil can thus be coupled to the winding of at least ei ⁇ NEN metal foil 2 12th
  • a reel disc 22 is further shown, which has a helically extending slot 23 which corresponds to the second web structure 13. The winding spiral 12 dives during rotation of the winding spiral 12 with the second web structure 13 and starting with the center 17 in the
  • the reel disc 22 is embodied here so that the at least one metal foil 2 is guided essentially along its entire extent along the axial direction 7.

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)
  • Catalysts (AREA)
  • Laminated Bodies (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention relates to a method for producing a honeycomb structure comprising at least one at least partially structured metal film, wherein the metal film is arranged in partial regions of the honeycomb structure in such a way that it is kept electrically isolated at a distance from an adjacently arranged metal film by an air gap, at least comprising the following steps: a. providing the at least one metal film; b. providing a forming plate with a supporting surface and at least a first web structure, extending in an axial direction from the supporting plate, wherein the first web structure also extends in a plane parallel to the supporting surface and forms an image of the air gap to be produced in the honeycomb structure; c. arranging the at least one metal film on the supporting surface in the first web structure.

Description

Beschreibung description
Verfahren zur Herstellung einer Wabenstruktur Die vorliegende Erfindung betrifft ein Verfahren zur Herstel¬ lung einer Wabenstruktur. Die Wabenstruktur wird insbesondere gebildet durch zumindest eine, wenigstens teilweise struktu¬ rierte Metallfolie, die zur Erzeugung der Wabenstruktur gestapelt und/oder gewickelt und/oder gewunden wird. Die Waben- struktur weist zumindest teilweise Strömungskanäle auf, durch die ein Fluid die Wabenstruktur von einer ersten Stirnseite zu einer zweiten Stirnseite durchströmen kann. Teilweise strukturiert bedeutet, dass die Metallfolie teilweise glatt, teilweise mit z. B. sinusförmigen Wellen, mit Löchern, mit Umlenkstrukturen oder ähnlichem ausgeführt ist. Die Wabenstruktur wird bevorzugt zur Behandlung von Abgas, insbesonde¬ re von Abgas einer Verbrennungskraftmaschine in einem Kraft¬ fahrzeug, z. B. ein PKW, ein LKW, ein Schiff, ein Flugzeug, eingesetzt . A method for manufacturing a honeycomb structure The present invention relates to a method for the manufacture ¬ development of a honeycomb structure. The honeycomb structure is formed in particular by at least one, at least partially struc tured ¬ metal foil which is stacked to form the honeycomb structure and / or wound and / or wound. The honeycomb structure has at least partially flow channels, through which a fluid can flow through the honeycomb structure from a first end side to a second end side. Partially structured means that the metal foil partially smooth, partially with z. B. sinusoidal waves, with holes, with deflection structures or the like is executed. The honeycomb structure is preferably used for the treatment of exhaust gas, in particular ¬ re of exhaust gas of an internal combustion engine in a power ¬ vehicle, z. As a car, a truck, a ship, an airplane, used.
Die Wabenstruktur weist einen oder mehrere Luftspalte auf, die sich entlang einer axialen Richtung insbesondere von einer Stirnseite zur anderen Stirnseite erstrecken, wobei be¬ nachbart zueinander angeordnete Metallfolien durch den Luft- spalt elektrisch isoliert angeordnet sind. Der Luftspalt er¬ streckt sich zusätzlich auch in einer Umfangsrichtung The honeycomb structure has one or more air gaps, which extend along an axial direction, in particular from one end face to the other end face, wherein be ¬ adjacent arranged metal foils are arranged electrically isolated by the air gap. The air gap he ¬ stretches additionally in a circumferential direction
und/oder einer radialen Richtung durch die Wabenstruktur. Der Luftspalt dient z. B. der elektrischen Isolation in einem elektrisch beheizten Wabenkörper. Durch den Luftspalt wird der Verlauf eines Strompfades durch den Wabenkörper zumindest teilweise vorgegeben. Solche elektrisch beheizten Wabenkörper mit Luftspalt sind z. B. aus der WO 2013/150066 AI bekannt. and / or a radial direction through the honeycomb structure. The air gap is used for. As the electrical insulation in an electrically heated honeycomb body. Through the air gap, the course of a current path through the honeycomb body is at least partially predetermined. Such electrically heated honeycomb body with air gap are z. B. from WO 2013/150066 AI known.
Zur Einbringung eines Luftspalts in eine Wabenstruktur werden bisher oxidierte Glatt- und Wellfolien (oxidierte, zumindest teilweise strukturierte Metallfolien) in die Wabenstruktur mit eingewickelt, wobei diese dann nach dem Lötprozess wieder aus der Wabenstruktur entfernt werden. To introduce an air gap in a honeycomb structure so far oxidized smooth and corrugated sheets (oxidized, at least partially structured metal foils) in the honeycomb structure wrapped with, which are then removed after the soldering process again from the honeycomb structure.
Dabei kann, aufgrund der elastischen Stapelung der Metallfo- lien, eine ungleichmäßige Spannungsverteilung in der Wabenstruktur vorliegen, die zu einer negativen Lötqualität führen kann (fehlende Verbindung von benachbart zu einander angeord¬ neten Metallfolien) . Weiter kann beim Entfernen dieser den Luftspalt erzeugenden Metallfolien aus der Wabenstruktur nach dem Lötprozess die Wabenstruktur beschädigt werden, so dassAt this time, due to the elastic stacking of the metal foils, there are a non-uniform stress distribution in the honeycomb structure, which can lead to a negative soldering quality (lack of connection adjacent to each other angeord ¬ Neten metal foils). Further, upon removal of these air gap generating metal foils from the honeycomb structure after the brazing process, the honeycomb structure may be damaged, so that
Reparaturmaßnahmen oder Neufertigung der Wabenstruktur erforderlich werden. Darüber hinaus ist das Entfernen dieser Metallfolien sehr zeitaufwendig und nicht reproduzierbar durchführbar. Eine Automatisierung des Herstellungsprozesses ist damit nur schwer möglich. Die entfernten Metallfolien sind nicht wieder einsetzbar und werden als Schrott entsorgt. Repair or re-production of the honeycomb structure will be required. In addition, the removal of these metal foils is very time consuming and not reproducible feasible. Automation of the manufacturing process is therefore difficult. The removed metal foils are not reusable and are disposed of as scrap.
Aufgabe der Erfindung ist es daher, die mit Bezug auf den Stand der Technik geschilderten Probleme zumindest teilweise zu lösen und insbesondere ein Verfahren zur Herstellung einer Wabenstruktur mit Luftspalt bereitzustellen, bei dem eine gleichmäßige Vorspannung in der Wabenstruktur vor und während eines Verbindungsprozesses gewährleistet ist, eine Zerstörung der Mittel zur Erzeugung des Luftspalts vermieden wird, der Prozess automatisierbar wird und eine Wiederverwendung der eingesetzten Mittel zur Erzeugung des Luftspalts ermöglicht wird . The object of the invention is therefore to solve the problems described with reference to the prior art at least partially, and in particular to provide a method for producing a honeycomb structure with air gap, in which a uniform bias in the honeycomb structure is ensured before and during a connection process, a Destruction of the means for generating the air gap is avoided, the process is automatable and reuse of the means used to create the air gap is made possible.
Diese Aufgaben werden gelöst mit einem Verfahren gemäß den Merkmalen des unabhängigen Patentanspruchs 1. Weitere vor¬ teilhafte Ausgestaltungen der Erfindung sind in den abhängig formulierten Patentansprüchen angegeben. Es ist darauf hinzuweisen, dass die in den abhängig formulierten Patentansprüchen einzeln aufgeführten Merkmale in technologisch sinnvol- 1er Weise miteinander kombiniert werden können und weitereThese objects are achieved with a method according to the features of independent claim 1. Further prior ¬ some embodiments of the invention are specified in the dependent claims. It should be noted that the features listed individually in the dependent formulated claims can be combined in a technologically meaningful manner and others
Ausgestaltungen der Erfindung definieren. Darüber hinaus werden die in den Patentansprüchen angegebenen Merkmale in der Beschreibung näher präzisiert und erläutert, wobei weitere bevorzugte Ausgestaltungen der Erfindung dargestellt werden. Define embodiments of the invention. In addition, the features specified in the claims in the Specified and explained in more detail description, wherein further preferred embodiments of the invention are shown.
Vorgeschlagen wird in diesem Zusammenhang ein Verfahren zur Herstellung einer Wabenstruktur umfassend zumindest eine wenigstens teilweise strukturierte Metallfolie, wobei die Me¬ tallfolie in Teilbereichen der Wabenstruktur von einer benachbart angeordneten Metallfolie durch einen Luftspalt elektrisch isoliert beabstandet angeordnet ist, zumindest um- fassend die folgenden Schritte: Is proposed in this context, a method for manufacturing a honeycomb structure comprising at least one at least partially structured metal foil, wherein the Me ¬ tallfolie spaced in subregions of the honeycomb structure of an adjacently arranged metal sheet electrically insulated by an air gap is arranged, at least comprising the steps of:
a. Bereitstellen der zumindest einen Metallfolie; a. Providing the at least one metal foil;
b. Bereitstellen eines Formtellers mit einer Auflagefläche und mindestens einer sich in einer axialen Richtung von der Auflagefläche erstreckenden ersten Stegstruktur, wobei sich die erste Stegstruktur zudem in einer Ebene parallel zu der Auflagefläche erstreckt und den in der Wabenstruk¬ tur zu erzeugenden Luftspalt abbildet; b. Providing a mold plate with a bearing surface and at least one extending first web structure in an axial direction from the support surface, wherein the first ridge structure also extends in a plane parallel to the support surface and images the in the honeycomb structural ¬ structure to be produced air gap;
c. Anordnen der zumindest einen Metallfolie auf der Auflage¬ fläche zwischen der ersten Stegstruktur. c. Arranging the at least one metal foil on the support ¬ surface between the first web structure.
Hinsichtlich der Funktion und Anordnung eines Luftspalts zur Isolierung von Metallfolien und zur Führung eines Strompfads durch eine Wabenstruktur wird auf die eingangs angeführte WO 2013/150066 AI verwiesen, die hiermit vollumfänglich in Bezug genommen wird. With regard to the function and arrangement of an air gap for the insulation of metal foils and for guiding a current path through a honeycomb structure, reference is made to the aforementioned WO 2013/150066 A1, which is hereby incorporated by reference in its entirety.
Es wird hier also ein Formteller vorgeschlagen, der eine erste Stegstruktur aufweist. Der Formteller und insbesondere die erste Stegstruktur sind aus einem temperaturfesten Werkstoff, z. B. einer Stahllegierung, einer Keramik oder ähnlichem hergestellt. Die Stegstruktur bildet bevorzugt den zu erzeugen¬ den Luftspalt in der fertig hergestellten (also auch z. B. durch einen Lötprozess verbundenen) Wabenstruktur. Dazu weist die erste Stegstruktur, ausgehend von einer Auflagefläche des Formtellers, in der axialen Richtung eine Höhe auf, so dass die in der ersten Stegstruktur anzuordnenden Metallfolien weit genug in die erste Stegstruktur eintauchen können, so ein festgelegter Luftspalt entlang der axialen Richtung mit konstanter Breite erzeugbar ist. Die erste Stegstruktur erstreckt sich insbesondere in der axialen Richtung mit bevorzugt konstanter Höhe. Weiter erstreckt sich die Stegstruktur in einer Ebene parallel zur Auflagefläche, also quer zur axi¬ alen Richtung, insbesondere spiralförmig. So kann durch die Stegstruktur ein Strompfad in der Wabenstruktur vorgegeben werden . In dem Schritt c. wird die zumindest eine Metallfolie auf der Auflagefläche und innerhalb der ersten Stegstruktur, also zwischen den Wänden der ersten Stegstruktur, angeordnet. It is therefore proposed here a mold plate having a first web structure. The mold plate and in particular the first web structure are made of a temperature-resistant material, for. As a steel alloy, a ceramic or the like. The ridge structure (including z., By a soldering process associated) preferably forms ¬ to generate the air gap in the finished manufactured honeycomb structure. For this purpose, the first web structure, starting from a bearing surface of the mold plate, has a height in the axial direction, so that the metal foils to be arranged in the first web structure can penetrate far enough into the first web structure a fixed air gap along the axial direction with a constant width can be generated. The first web structure extends in particular in the axial direction with preferably constant height. Furthermore, the ridge structure extending in a plane parallel to the bearing surface, ie transversely to the axi ¬ alen direction, in particular helically. Thus, a ridge in the honeycomb structure can be specified by the web structure. In step c. the at least one metal foil is arranged on the bearing surface and within the first web structure, ie between the walls of the first web structure.
Weiter wird vorgeschlagen, dass in einem weiteren Schritt d. der Formteller zusammen mit der zumindest einen Metallfolie einem Verbindungsschritt zugeführt wird, in dem die zumindest eine Metallfolie untereinander zur dauerfesten Ausbildung der Wabenstruktur verbunden wird, wobei in einem darauffolgenden Schritt e. der Formteller mit der ersten Stegstruktur aus der Wabenstruktur entfernt wird. It is further proposed that in a further step d. the mold plate is supplied together with the at least one metal foil a joining step, in which the at least one metal foil is connected to each other for permanent formation of the honeycomb structure, wherein in a subsequent step e. the mold plate with the first web structure is removed from the honeycomb structure.
Der Verbindungsschritt umfasst insbesondere einen Lötprozess, bevorzugt einen Lötprozess, bei dem bei Temperaturen von 800 bis 1200 °C [Grad Celsius] ein Lotmaterial aufgeschmolzen und die benachbart und einander berührenden Metallfolien an dafür vorgesehenen Positionen miteinander verbunden werden. Dieser Lötprozess ist für die Herstellung der hier beschriebenen Wabenkörper bekannt. Gemäß einer bevorzugten Weiterbildung weist der Formteller eine Mehrzahl von ersten Öffnungen auf, die sich in der axialen Richtung durch den Formteller erstrecken, wobei durch zumindest eine der ersten Öffnungen ein Stützstift durchführbar ist zur Anordnung in der Wabenstruktur nach Schritt c. In particular, the joining step comprises a soldering process, preferably a soldering process, in which a solder material is melted at temperatures of 800 to 1200 ° C [degrees Celsius] and the adjoining and contacting metal foils are connected to one another at positions intended for this purpose. This soldering process is known for the production of the honeycomb body described here. According to a preferred development, the mold plate has a plurality of first openings, which extend in the axial direction through the mold plate, wherein a support pin can be performed through at least one of the first openings for arrangement in the honeycomb structure after step c.
Der Stützstift dient insbesondere zur Beabstandung von einem, und zur Fixierung der Wabenstruktur durch einen sogenannten Stützwabenkörper, der stromabwärts oder stromaufwärts von der Wabenstruktur in einer Fluid- (Abgas- ) Leitung anordenbar ist. The support pin is used in particular for the spacing of one, and for fixing the honeycomb structure by a so-called A support honeycomb body that is locatable downstream of or upstream of the honeycomb structure in a fluid (exhaust) conduit.
Der Stützstift wird hier insbesondere nur zur Kontrolle der Lage/der Position der hergestellten Wabenstruktur eingesetzt. So kann für spätere Prozessschritte sichergestellt werden, dass die Wabenstruktur mit anderen Stützwabenstrukturen reproduzierbar verbindbar ist. Insbesondere wird in Schritt c. des Verfahrens zusätzlich ei¬ ne Wickelspirale eingesetzt, die eine spiralförmige zweite Stegstruktur aufweist, die der ersten Stegstruktur entspricht; wobei die zweite Stegstruktur an einer dem Formtel¬ ler zugewandten ersten Stirnseite in der axialen Richtung bündig abschließt, wobei die zweite Stegstruktur an der zwei¬ ten Stirnseite eine Steigung aufweist, wobei sich die zweite Stirnseite ausgehend von einem Zentrum der zweiten Stegstruktur entlang der spiralförmigen Windungen kontinuierlich der ersten Stirnseite annähert; und wobei die Wickelspirale zu- mindest zwei Stifte aufweist, die sich ausgehend von demThe support pin is used here in particular only to control the position / position of the honeycomb structure produced. Thus, it can be ensured for later process steps that the honeycomb structure can be reproducibly connected to other support honeycomb structures. In particular, in step c. the method used in addition ei ¬ ne winding spiral having a spiral shaped second ridge structure corresponding to the first ridge structure; wherein the second web structure is flush on a side facing the Formtel ¬ ler first end side in the axial direction, wherein the second ridge structure has a pitch at the two ¬ th end face, wherein the second end side from a center of the second ridge structure along the spiral windings continuously approaches the first end face; and wherein the winding spiral has at least two pins extending from the
Zentrum weiter entlang der axialen Richtung erstrecken; wobei die zumindest eine Metallfolie zwischen den zwei Stiften auf¬ genommen wird und durch Drehung der Wickelspirale kontinuierlich in die zweite Stegstruktur aufgenommen und dann in die erste Stegstruktur überführt wird. Center further along the axial direction extend; wherein the at least one metal foil between the two pins is made to ¬ and is taken up by rotation of the winding spiral continuously in the second web structure and then transferred to the first ridge structure.
Die Wickelspirale ermöglicht insbesondere eine automatisierte Anordnung der mindestens einen Metallfolie in der ersten Stegstruktur. Dieser Vorgang wird in der folgenden Figurenbe- Schreibung genau erläutert. Ausgehend von einer ersten Stirnseite der Wickelspirale, die dem Formteller und der darauf angeordneten ersten Stegstruktur zugewandt ist, erstreckt sich eine zweite Stegstruktur spiralförmig, zum einen entlang einer Umfangsrichtung und in einer radialen Richtung von au- ßen nach innen und zum anderen mit jeder Windung auch in der axialen Richtung. Die (komplette) zweite Stegstruktur In particular, the winding spiral enables an automated arrangement of the at least one metal foil in the first web structure. This process is explained in detail in the following figure description. Starting from a first end face of the winding spiral, which faces the mold plate and the first web structure arranged thereon, a second web structure extends in a spiral shape, on the one hand along a circumferential direction and in a radial direction from the outside in and on the other with each turn in the axial direction. The (complete) second bridge structure
schließt dabei bündig an der ersten Stirnseite ab, wobei die zweite Stegstruktur sich an der zweiten Stirnseite mit einer Steigung immer weiter entlang der axialen Richtung erstreckt, so dass ein Zentrum an der zweiten Stirnseite der zweiten Stegstruktur in einem größten Abstand von der ersten Stirn- seite angeordnet ist. Die Steigung der spiraligen zweiten Stegstruktur ermöglicht, dass bei Drehung der Wickelspirale die eine Metallfolie (oder der Stapel von Metallfolien) aus¬ gehend von dem Zentrum sukzessive spiralig aufwickelt wird und immer mehr Windungen (ausgehend von einer innersten Win- dung im Zentrum hin zu einer äußersten Windung) in der zweiten Stegstruktur aufgenommen werden. closes flush with the first end face, wherein the second web structure extends on the second end side with a slope more and more along the axial direction, so that a center on the second end side of the second web structure is arranged at a greatest distance from the first end side. The pitch of the helical second web structure allows for rotation of the winding spiral a metal foil (or the stack of metal foils) is from ¬ continuously wound from the center gradually spirally and more and more windings (starting from an innermost angular extension in the center towards a outermost turn) are recorded in the second web structure.
Die zweite Stegstruktur bildet dabei ebenfalls die vorbe¬ stimmten Luftspalte in der Wabenstruktur. Die zweite The second web structure also forms the vorbe ¬ agreed air gaps in the honeycomb structure. The second
Stegstruktur entspricht zumindest im Wesentlichen der Form der ersten Stegstruktur (in einer Ebene quer zur axialen Richtung) . Damit kann die mindestens eine Metallfolie von der Wickelspirale entlang der axialen Richtung in die erste The web structure corresponds at least substantially to the shape of the first web structure (in a plane transverse to the axial direction). Thus, the at least one metal foil from the winding spiral along the axial direction in the first
Stegstruktur des Formtellers überführt und die Wickelspirale für den nächsten Wickelvorgang weiterverwendet werden. Transfer web structure of the mold plate transferred and the winding spiral for the next winding process continue to be used.
Insbesondere weist die Wickelspirale sich von der zweiten Stegstruktur an der ersten Stirnseite erstreckende Mitnehmerstifte auf, die sich in zweite Öffnungen in der ersten Stegstruktur und/oder im Formteller und/oder in erste Öffnungen im Formteller hinein erstrecken. In particular, the winding spiral has entrainment pins extending from the second web structure on the first end side and extending into second openings in the first web structure and / or in the mold plate and / or into first openings in the mold plate.
Diese Mitnehmerstifte stellen insbesondere eine fluchtende Anordnung von erster Stegstruktur und zweiter Stegstruktur sicher. Weiterhin kann so die Drehbewegung von Formteller und Wickelspirale zum Aufwickeln der mindestens einen Metallfolie gekoppelt werden. In particular, these driver pins ensure an aligned arrangement of the first web structure and the second web structure. Furthermore, the rotational movement of the mold plate and the winding spiral for winding up the at least one metal foil can thus be coupled.
Weiter wird vorgeschlagen, in Schritt c. zudem ein Wickeltel- 1er einzusetzen, der einen sich spiralförmig erstreckenden Schlitz aufweist, der der zweiten Stegstruktur entspricht; wobei während der Drehung der Wickelspirale die Wickelspirale mit der zweiten Stegstruktur und beginnend mit dem Zentrum in den Schlitz eintaucht und so die zwischen dem Wickelteller und der Wickelspirale angeordnete zumindest eine Metallfolie sukzessive entlang der axialen Richtung in die Wickelspirale eingeführt und schließlich in die erste Stegstruktur überführt wird. It is further proposed in step c. in addition, to use a winder 1 having a helically extending slot corresponding to the second land structure; wherein during the rotation of the winding spiral the winding spiral with the second web structure and starting with the center dips into the slot and so arranged between the reel disc and the winding spiral at least one metal foil is successively introduced along the axial direction in the winding coil and finally transferred to the first web structure.
Der Wickelteller ist insbesondere eben ausgeführt, so dass die mindestens eine Metallfolie bevorzugt in ihrer gesamten Erstreckung entlang der axialen Richtung geführt wird. The reel disc is particularly flat, so that the at least one metal foil is preferably guided in its entire extent along the axial direction.
Insbesondere ist die Bewegung entlang der axialen Richtung mit der Drehung von Wickelteller und Formteller gekoppelt und/oder synchronisiert. In particular, the movement along the axial direction is coupled and / or synchronized with the rotation of the winding plate and the mold plate.
Gemäß einer bevorzugten Ausgestaltung bildet die zumindest eine wenigstens teilweise strukturierte Metallfolie vor dem Anordnen in der ersten Stegstruktur einen mehrlagigen Stapel. Insbesondere ist eine Metallfolie zur Bildung eines Stapels mehrfach gefaltet. Es können aber auch mehrere, insbesondere unterschiedlich strukturierte (oder zumindest teilweise nicht strukturierte, also im Wesentlichen glatte) Metallfolien auf¬ einander zu einem Stapel angeordnet werden. Es wird weiter eine Wickelvorrichtung zur Durchführung eines erfindungsgemäßen Verfahrens vorgeschlagen, zumindest umfassend einen Formteller mit einer ersten Stegstruktur. According to a preferred embodiment, the at least one at least partially structured metal foil forms a multilayer stack before being arranged in the first web structure. In particular, a metal foil is folded several times to form a stack. It is also possible more, in particular differently structured (or at least partially non-patterned, that is substantially smooth) metal foils are disposed on ¬ each other to form a stack. It is further proposed a winding device for carrying out a method according to the invention, at least comprising a mold plate with a first web structure.
Insbesondere umfasst die Wickelvorrichtung weiter zumindest eine Wickelspirale mit einer zweiten Stegstruktur und einen Wickelteller . In particular, the winding device further comprises at least one winding spiral with a second web structure and a winding plate.
Die Erfindung sowie das technische Umfeld werden nachfolgend anhand der Figuren näher erläutert. Es ist darauf hinzuwei- sen, dass die Figuren besonders bevorzugte Ausführungsvarianten der Erfindung zeigen, diese jedoch nicht darauf be- schränkt ist. Dabei sind gleiche Bauteile in den Figuren mit denselben Bezugszeichen versehen. Es zeigen schematisch: The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures show particularly preferred embodiments of the invention, but these are not based on it. is limited. The same components are provided in the figures with the same reference numerals. They show schematically:
Fig. 1: einen Stapel Metallfolien in perspektivischer Ansicht ; Fig. 1: a stack of metal foils in a perspective view;
Fig. 2: einen Formteller in perspektivischer Ansicht; Fig. 2: a mold plate in a perspective view;
Fig. 3: eine Wabenstruktur und einen Formteller in perspek- tivischer Ansicht; 3 shows a honeycomb structure and a mold plate in a perspective view;
Fig. 4: eine fertig hergestellte Wabenstruktur mit Luft¬ spalt in perspektivischer Ansicht; Fig. 5: einen zweiten Formteller in perspektivischer Ansicht; und FIG. 4 shows a finished fabricated honeycomb structure with air ¬ gap in perspective view; 5 shows a second mold plate in a perspective view; and
Fig. 6: eine Wickelvorrichtung in Explosionsdarstellung und in perspektivischer Ansicht. 6 shows a winding device in an exploded view and in a perspective view.
Fig. 1 zeigt einen Stapel 24 Metallfolien 2 in perspektivischer Ansicht und den Verfahrensschritt a. 1 shows a stack 24 of metal foils 2 in a perspective view and the method step a.
Fig. 2 zeigt einen Formteller 5 in perspektivischer Ansicht und den Verfahrensschritt b. Der Formteller 5 weist eine ers¬ te Stegstruktur 8 auf. Die erste Stegstruktur 8 bildet den zu erzeugenden Luftspalt 4 in der fertig hergestellten (also auch z. B. durch einen Lötprozess verbundenen) Wabenstruktur 1 (siehe Fig. 4) . Dazu weist die erste Stegstruktur 8, ausge- hend von der Auflagefläche 6 des Formtellers 5, in der axia¬ len Richtung 7 eine Höhe auf, so dass die in der ersten Fig. 2 shows a mold plate 5 in a perspective view and the method step b. The mold plate 5 has a ¬ ers te ridge structure. 8 The first web structure 8 forms the air gap 4 to be produced in the finished manufactured honeycomb structure 1 (ie also connected, for example, by a soldering process) (see FIG. 4). For this purpose, the first web structure 8, starting from the support surface 6 of the mold plate 5, in the axia ¬ len direction 7 a height, so that in the first
Stegstruktur 8 anzuordnenden Metallfolien 2 weit genug in die erste Stegstruktur 8 eintauchen können, so ein festgelegter Luftspalt 4 entlang der axialen Richtung 7 mit konstanter Breite erzeugbar ist (siehe Fig. 3) . Die erste Stegstruktur 8 erstreckt sich in einer Ebene 9 parallel zur Auflagefläche 6, also quer zur axialen Richtung 7. So kann durch die erste Stegstruktur 8 ein Strompfad in der Wabenstruktur 1 vorgegeben werden. Weiter weist der Formteller 5 eine Mehrzahl von ersten Öffnungen 10 auf, die sich in der axialen Richtung 7 durch den Formteller 5 erstrecken, wobei durch zumindest eine der ersten Öffnungen 10 ein Stützstift 11 durchführbar ist zur Anordnung in der Wabenstruktur 1 nach Schritt c. Web structure 8 to be arranged metal foils 2 can dive far enough into the first web structure 8, so a fixed air gap 4 along the axial direction 7 with a constant width can be generated (see Fig. 3). The first web structure 8 extends in a plane 9 parallel to the support surface 6, ie transversely to the axial direction 7. Thus, by the first Bridge structure 8 a current path in the honeycomb structure 1 are given. Further, the mold plate 5 has a plurality of first openings 10, which extend in the axial direction 7 through the mold plate 5, wherein at least one of the first openings 10, a support pin 11 is feasible for arrangement in the honeycomb structure 1 after step c.
Fig. 3 zeigt einen Formteller 5 und eine darauf angeordnete Wabenstruktur 1 in perspektivischer Ansicht und Verfahrens- schritt c. Die erste Stegstruktur 8 erstreckt sich hier in der axialen Richtung 7 mit konstanter Höhe. Die erste Wabenstruktur 1 umfasst hier eine Mehrzahl von wenigstens teilwei¬ se strukturierten Metallfolien 2, wobei einzelne Metallfolien 2 in Teilbereichen 3 der Wabenstruktur 1 von einer benachbart angeordneten Metallfolie 2 durch einen Luftspalt 4 elektrisch isoliert beabstandet angeordnet sind. FIG. 3 shows a mold plate 5 and a honeycomb structure 1 arranged thereon in a perspective view and method step c. The first web structure 8 extends here in the axial direction 7 with a constant height. The first honeycomb structure 1 here comprises a plurality of at least teilwei ¬ se structured metal foils 2, wherein individual metal foils spaced 2 in partial regions 3 of the honeycomb structure 1 is electrically insulated from an adjacently disposed metal sheet 2 by an air gap 4 are arranged.
In diesem Zustand werden in einem weiteren Schritt d. der Formteller 5 zusammen mit der zumindest einen Metallfolie 2 einem Verbindungsschritt zugeführt, in dem die zumindest eine Metallfolie 2 untereinander zur dauerfesten Ausbildung der Wabenstruktur 1 verbunden wird. In this state, in a further step d. the mold plate 5 is supplied together with the at least one metal foil 2 to a connecting step, in which the at least one metal foil 2 is connected to one another for permanent formation of the honeycomb structure 1.
Fig. 4 zeigt eine fertig hergestellte Wabenstruktur 1 mit Luftspalt 4 in perspektivischer Ansicht. In Schritt e. ist der Formteller 5 mit der ersten Stegstruktur 8 aus der Wabenstruktur 1 entfernt worden. 4 shows a finished honeycomb structure 1 with air gap 4 in a perspective view. In step e. the mold plate 5 with the first web structure 8 has been removed from the honeycomb structure 1.
Fig. 5 zeigt einen zweiten Formteller 5 in perspektivischer Ansicht. Die Ausführungen zu Fig. 2 gelten entsprechend. Hier ist ebenfalls eine Mehrzahl von ersten Öffnungen 10 vorgese¬ hen, die sich in der axialen Richtung 7 durch den Formteller 5 erstrecken. Die erste Stegstruktur 8 umfasst mehrere Windungen 18 und weist weiter zweite Öffnungen 21 auf, in die sich Mitnehmerstifte 20 der Wickelspirale 12 erstrecken kön¬ nen (siehe Fig. 6) . Fig. 6 zeigt eine Wickelvorrichtung 25 in Explosionsdarstel¬ lung und in perspektivischer Ansicht. Die hier gezeigte Wickelvorrichtung 25 wird in Schritt c. des Verfahrens einge¬ setzt. Die Wickelvorrichtung 25 umfasst eine Aufnahme 26 die in zumindest in einer Umfangsrichtung 27 antreibbar ist. Weiter umfasst die Wickelvorrichtung 25 einen Formteller 5, eine Wickelspirale 12 sowie einen Wickelteller 22. Fig. 5 shows a second mold plate 5 in a perspective view. The comments on Fig. 2 apply accordingly. Here too, a plurality of first openings 10 are vorgese ¬ hen, extending in the axial direction 7 through the mold plate 5. The first web structure 8 comprises a plurality of turns 18 and further includes second apertures 21, in which follower pins 20 of the winding scroll 12 Kgs extend ¬ NEN (see Fig. 6). Fig. 6 shows a winding device 25 in Explosionsdarstel ¬ lung and in a perspective view. The winding device 25 shown here is in step c. of the method is ¬ sets. The winding device 25 comprises a receptacle 26 which is drivable in at least one circumferential direction 27. Further, the winding device 25 comprises a mold plate 5, a winding coil 12 and a reel disc 22nd
Die Wickelspirale 12 weist eine spiralförmige zweite The winding spiral 12 has a spiral second
Stegstruktur 13 auf, die der ersten Stegstruktur 8 auf demWeb structure 13, the first web structure 8 on the
Formteller 5 entspricht; wobei die zweite Stegstruktur 13 an einer dem Formteller 5 zugewandten ersten Stirnseite 14 in der axialen Richtung 7 bündig abschließt, wobei die zweite Stegstruktur 13 an der zweiten Stirnseite 15 eine Steigung 16 aufweist. Die zweite Stirnseite 15 nähert sich, ausgehend von einem Zentrum 17 der zweiten Stegstruktur 13 entlang der spiralförmigen Windungen 18 kontinuierlich der ersten Stirnseite 13 an; und wobei die Wickelspirale 12 zumindest zwei Stifte 19 aufweist, die sich ausgehend von dem Zentrum 17 weiter entlang der axialen Richtung 7 erstrecken. Der Stapel 24 von Metallfolien 2 wird zwischen den zwei Stiften 19 aufgenommen und durch Drehung der Wickelspirale 12 kontinuierlich in die zweite Stegstruktur 13 aufgenommen und dann in die erste Stegstruktur 8 überführt. Mold plate 5 corresponds; wherein the second web structure 13 is flush in the axial direction 7 on a first end face 14 facing the mold plate 5, wherein the second web structure 13 has a slope 16 on the second end face 15. The second end face 15, starting from a center 17 of the second web structure 13, approaches the first end face 13 continuously along the spiral windings 18; and wherein the winding coil 12 has at least two pins 19 which extend further from the center 17 along the axial direction 7. The stack 24 of metal foils 2 is received between the two pins 19 and continuously received by rotation of the winding coil 12 in the second web structure 13 and then transferred into the first web structure 8.
Die Wickelspirale 12 ermöglicht so eine automatisierte Anord¬ nung der mindestens einen Metallfolie 2 in der ersten The winding coil 12 thus enables an automated Anord ¬ voltage of the at least one metal foil 2 in the first
Stegstruktur 8. Ausgehend von einer ersten Stirnseite 14 der Wickelspirale 12, die dem Formteller 5 und der darauf ange- ordneten ersten Stegstruktur 8 zugewandt ist, erstreckt sich eine zweite Stegstruktur 13 spiralförmig, zum einen entlang einer Umfangsrichtung 27 und in einer radialen Richtung 28 von außen nach innen und zum anderen mit jeder Windung 18 auch in der axialen Richtung 7. Die komplette zweite Web Structure 8. Starting from a first end face 14 of the winding spiral 12, which faces the mold plate 5 and the first web structure 8 arranged thereon, a second web structure 13 extends spirally, first along a circumferential direction 27 and in a radial direction 28 of FIG outside to inside and the other with each turn 18 also in the axial direction 7. The complete second
Stegstruktur 13 schließt dabei bündig an der ersten Stirnsei¬ te 14 ab, wobei die zweite Stegstruktur 13 sich an der zwei¬ ten Stirnseite 15 mit einer Steigung 16 immer weiter entlang der axialen Richtung 7 erstreckt, so dass ein Zentrum 17 an der zweiten Stirnseite 15 der zweiten Stegstruktur in einem größten Abstand von der ersten Stirnseite 14 angeordnet ist. Die Steigung 16 der spiraligen zweiten Stegstruktur 13 ermög- licht, dass bei Drehung der Wickelspirale 12 die eine Metall¬ folie 2 (bzw. der Stapel 24 von Metallfolien 2) ausgehend von dem Zentrum 17 sukzessive spiralig aufwickelt wird und immer mehr Windungen 18 (ausgehend von einer innersten Windung 18 im Zentrum 17 hin zu einer äußersten Windung 18) in der zwei- ten Stegstruktur 13 aufgenommen werden. Web structure 13 terminates flush with the first Stirnsei ¬ te 14, wherein the second web structure 13 on the two ¬ th end face 15 with a slope 16 along along the axial direction 7 extends, so that a center 17 is arranged on the second end face 15 of the second web structure at a greatest distance from the first end face 14. The slope 16 of the spiral second web structure 13 enables light that the metal ¬ foil 2 (or the stack 24 of metal foils 2) starting from the center 17 is successively wound spirally on rotation of the winding coil 12 and more and more windings 18 (starting from an innermost turn 18 in the center 17 to an outermost turn 18) in the second web structure 13.
Die zweite Stegstruktur 13 bildet dabei ebenfalls die vorbe¬ stimmten Luftspalte 4 in der Wabenstruktur 1. Die zweite Stegstruktur 13 entspricht zumindest im Wesentlichen der Form der ersten Stegstruktur 8 (in einer Ebene 9 quer zur axialen Richtung 7) . Damit kann die mindestens eine Metallfolie 2 von der Wickelspirale 12 entlang der axialen Richtung 7 in die erste Stegstruktur 8 des Formtellers 5 überführt und die Wi¬ ckelspirale 12 für den nächsten Wickelvorgang weiterverwendet werden. The second ridge structure 13 forms also the vorbe ¬ voted air gaps 4 in the honeycomb structure 1, corresponding to the second ridge structure 13 at least substantially the shape of the first web structure 8 (in a plane transverse to the axial direction 9 7). Thus can be transferred from the winding coil 12 along the axial direction 7 in the first web structure 8 of the molding plate 5 at least one metal foil 2 and the Wi ¬ ckelspirale 12 are further used for the next winding operation.
Hier weist die Wickelspirale 12 sich von der zweiten Here, the winding spiral 12 is different from the second
Stegstruktur 13 an der ersten Stirnseite 14 in der axialen Richtung 7 erstreckende Mitnehmerstifte 20 auf, die sich in zweite Öffnungen 21 in der ersten Stegstruktur 8 und/oder im Formteller 5 und/oder in erste Öffnungen 10 im Formteller 5 hinein erstrecken. Web structure 13 on the first end face 14 in the axial direction 7 extending cam pins 20 which extend into second openings 21 in the first web structure 8 and / or in the mold plate 5 and / or in first openings 10 in the mold plate 5 inside.
Diese Mitnehmerstifte 20 stellen eine fluchtende Anordnung von erster Stegstruktur 8 und zweiter Stegstruktur 13 sicher. Weiterhin kann so die Drehbewegung von Aufnahme 26, Formteller 5 und Wickelspirale 12 zum Aufwickeln der mindestens ei¬ nen Metallfolie 2 gekoppelt werden. Hier ist weiter ein Wickelteller 22 gezeigt, der einen sich spiralförmig erstreckenden Schlitz 23 aufweist, der der zweiten Stegstruktur 13 entspricht. Die Wickelspirale 12 taucht während der Drehung der Wickelspirale 12 mit der zweiten Stegstruktur 13 und beginnend mit dem Zentrum 17 in den These driving pins 20 ensure an aligned arrangement of first web structure 8 and second web structure 13. Further, the rotational motion of receptacle 26, shape plate 5 and the winding coil can thus be coupled to the winding of at least ei ¬ NEN metal foil 2 12th Here, a reel disc 22 is further shown, which has a helically extending slot 23 which corresponds to the second web structure 13. The winding spiral 12 dives during rotation of the winding spiral 12 with the second web structure 13 and starting with the center 17 in the
Schlitz 23 ein und überführt so die zwischen dem Wickelteller 22 und der Wickelspirale 12 angeordnete zumindest eine Me¬ tallfolie 2 sukzessive entlang der axialen Richtung 7 in die Wickelspirale 12 und schließlich in die erste Stegstruktur 8. Slot 23 and thus transferred between the reel disc 22 and the winding coil 12 arranged at least Me ¬ tallfolie 2 successively along the axial direction 7 in the winding coil 12 and finally into the first web structure eighth
Der Wickelteller 22 ist hier eben ausgeführt, so dass die mindestens eine Metallfolie 2 im Wesentlichen in ihrer gesamten Erstreckung entlang der axialen Richtung 7 geführt wird. The reel disc 22 is embodied here so that the at least one metal foil 2 is guided essentially along its entire extent along the axial direction 7.

Claims

Verfahren zur Herstellung einer Wabenstruktur (1) umfassend zumindest eine wenigstens teilweise strukturierte Metallfolie (2), wobei die Metallfolie (2) in Teilberei¬ chen (3) der Wabenstruktur (1) von einer benachbart angeordneten Metallfolie (2) durch einen Luftspalt (4) elektrisch isoliert beabstandet angeordnet ist, zumin¬ dest umfassend die folgenden Schritte: A method for producing a honeycomb structure (1) comprising at least one at least partially structured metal foil (2), wherein the metal foil (2) in Teilberei ¬ chen (3) of the honeycomb structure (1) of an adjacently arranged metal foil (2) through an air gap (4 ) is electrically insulated spaced, at least ¬ comprising the steps of:
a. Bereitstellen der zumindest einen Metallfolie (2); b. Bereitstellen eines Formtellers (5) mit einer Aufla¬ gefläche (6) und mindestens einer sich in einer axia¬ len Richtung (7) von der Auflagefläche (6) erstre¬ ckenden ersten Stegstruktur (8), wobei sich die erste Stegstruktur (8) zudem in einer Ebene (9) parallel zu der Auflagefläche (6) erstreckt und den in der Waben¬ struktur (1) zu erzeugenden Luftspalt (4) abbildet; c. Anordnen der zumindest einen Metallfolie (2) auf der Auflagefläche (6) in der ersten Stegstruktur (8) . a. Providing the at least one metal foil (2); b. Providing a mold plate (5) having a Aufla ¬ gefläche (6) and at least one in an axia ¬ len direction (7) of the bearing surface (6) erstre ¬-bridging first web structure (8), wherein said first web structure (8) also in a plane (9) extending parallel to the support surface (6) and the in the honeycomb ¬ structure (1) to be generated air gap (4) is formed; c. Arranging the at least one metal foil (2) on the support surface (6) in the first web structure (8).
Verfahren nach Anspruch 1, wobei in einem weiteren The method of claim 1, wherein in another
Schritt d. der Formteller (5) zusammen mit der zumindest einen Metallfolie (2) einem Verbindungsschritt zugeführt wird, in dem die zumindest eine Metallfolie (2) unterei¬ nander zur dauerfesten Ausbildung der Wabenstruktur (1) verbunden wird, wobei in einem darauffolgenden Schritt e. der Formteller (5) mit der ersten Stegstruktur (8) aus der Wabenstruktur (1) entfernt wird. Step d. the mold plate (5) together with the at least one metal foil (2) fed to a bonding step in the unterei ¬ Nander is connected to the permanently fixed configuration of the honeycomb structure (1) at least one metal foil (2), wherein in a subsequent step e. the mold plate (5) with the first web structure (8) is removed from the honeycomb structure (1).
Verfahren nach Anspruch 2, wobei der Verbindungsschritt einen Lötprozess umfasst. The method of claim 2, wherein the joining step comprises a soldering process.
Verfahren nach einem der vorhergehenden Ansprüche, wobei der Formteller (5) eine Mehrzahl von ersten Öffnungen (10) aufweist, die sich in der axialen Richtung (7) durch den Formteller (5) erstrecken, wobei durch zumindest eine der ersten Öffnungen (10) ein Stützstift (11) durchführbar ist zur Anordnung in der Wabenstruktur (1) nach Schritt c. Method according to one of the preceding claims, wherein the mold plate (5) has a plurality of first openings (10) which extend in the axial direction (7) through the mold plate (5), wherein at least one of the first openings (10) a support pin (11) is feasible for arrangement in the honeycomb structure (1) after step c.
Verfahren nach einem der vorhergehenden Ansprüche, wobei in Schritt c. des Verfahrens zusätzlich eine Wickelspi¬ rale (12) eingesetzt wird, die eine spiralförmige zweite Stegstruktur (13) aufweist, die der ersten StegstrukturMethod according to one of the preceding claims, wherein in step c. the method, a Wickelspi ¬ rale (12) is used in addition, which has a spiral-shaped second ridge structure (13) of the first web structure
(8) entspricht; wobei die zweite Stegstruktur (13) an einer dem Formteller (5) zugewandten ersten Stirnseite(8) corresponds; wherein the second web structure (13) on a first end face facing the mold plate (5)
(14) in der axialen Richtung (7) bündig abschließt, wobei die zweite Stegstruktur (13) an der zweiten Stirnseite (15) eine Steigung (16) aufweist, wobei sich die zweite Stirnseite (15) ausgehend von einem Zentrum (17) der zweiten Stegstruktur (13) entlang der spiralförmigen Windungen (18) kontinuierlich der ersten Stirnseite (14) annähert; und wobei die Wickelspirale (12) zumindest zwei Stifte (19) aufweist, die sich ausgehend von dem Zentrum (17) weiter entlang der axialen Richtung (7) erstrecken; wobei die zumindest eine Metallfolie (2) zwi¬ schen den zumindest zwei Stiften (19) aufgenommen wird und durch Drehung der Wickelspirale (12) kontinuierlich in die zweite Stegstruktur (13) aufgenommen und dann in die erste Stegstruktur (8) überführt wird. (14) in the axial direction (7) is flush, wherein the second web structure (13) on the second end face (15) has a slope (16), wherein the second end face (15) starting from a center (17) of second web structure (13) along the spiral windings (18) continuously approaches the first end face (14); and wherein the winding coil (12) has at least two pins (19) extending further from the center (17) along the axial direction (7); wherein the at least one metal foil (2) Zvi ¬ rule is the at least two pins (19) picked up by rotation of the winding coil (12) was added continuously in the second web structure (13) and is then transferred in the first web structure (8).
Verfahren nach Anspruch 5, wobei die Wickelspirale (12) sich von der zweiten Stegstruktur (13) an der ersten Stirnseite (14) erstreckende Mitnehmerstifte (20) auf¬ weist, die sich in zweite Öffnungen (21) in der ersten Stegstruktur (8) und/oder im Formteller (5) und/oder in erste Öffnungen (10) im Formteller (5) hinein erstrecken . The method of claim 5, wherein the coil spiral (12) on the first end side (14) has from the second ridge structure (13) extending carrier pins (20) on ¬, resulting in second openings (21) in said first web structure (8) and / or in the mold plate (5) and / or in first openings (10) in the mold plate (5) extend into it.
Verfahren nach Anspruch 5 oder 6, wobei in Schritt c. zudem ein Wickelteller (22) eingesetzt wird, der einen sich spiralförmig erstreckenden Schlitz (23) aufweist, der der zweiten Stegstruktur (13) entspricht; wobei während der Drehung der Wickelspirale (12) die Wickelspira- le (12) mit der zweiten Stegstruktur (13) und beginnend mit dem Zentrum (17) in den Schlitz (23) eintaucht und so die zwischen dem Wickelteller (22) und der Wickelspirale (12) angeordnete zumindest eine Metallfolie (2) sukzessive entlang der axialen Richtung (7) in die Wickelspirale (12) eingeführt und schließlich in die erste Stegstruktur (8) überführt wird. Method according to claim 5 or 6, wherein in step c. in addition, a reel disc (22) is used which has a helically extending slot (23) corresponding to the second web structure (13); wherein, during the rotation of the winding spiral (12), the winding spiral le (12) with the second web structure (13) and starting with the center (17) in the slot (23) dips and so between the reel disc (22) and the winding coil (12) arranged at least one metal foil (2) successively along the axial direction (7) inserted into the winding coil (12) and finally into the first web structure (8) is transferred.
8. Verfahren nach einem der vorhergehenden Ansprüche, wobei die zumindest eine wenigstens teilweise strukturierte Metallfolie (2) vor dem Anordnen in der ersten 8. The method according to any one of the preceding claims, wherein the at least one at least partially structured metal foil (2) before arranging in the first
Stegstruktur (8) einen mehrlagigen Stapel (24) bildet.  Web structure (8) forms a multilayer stack (24).
9. Wickelvorrichtung (25) zur Durchführung eines Verfahrens nach einem der Ansprüche 1 bis 8, zumindest umfassend einen Formteller (5) mit einer ersten Stegstruktur (8) . 9. winding device (25) for performing a method according to any one of claims 1 to 8, comprising at least a mold plate (5) having a first web structure (8).
10. Wickelvorrichtung (25) nach Anspruch 9, wobei die Wickelvorrichtung (25) weiter zumindest eine Wickelspirale (12) mit einer zweiten Stegstruktur (13) und einen Wickelteller (22) umfasst. 10. Winding device (25) according to claim 9, wherein the winding device (25) further comprises at least one winding coil (12) with a second web structure (13) and a reel disc (22).
EP17726272.2A 2016-06-09 2017-05-24 Method for producing a honeycomb structure Active EP3469196B1 (en)

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DE102016210235.4A DE102016210235A1 (en) 2016-06-09 2016-06-09 Process for producing a honeycomb structure
PCT/EP2017/062599 WO2017211592A1 (en) 2016-06-09 2017-05-24 Method for producing a honeycomb structure

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US11078820B2 (en) 2021-08-03
WO2017211592A1 (en) 2017-12-14
EP3469196B1 (en) 2020-04-15
DE102016210235A1 (en) 2017-12-28
KR20190003760A (en) 2019-01-09
US20200340385A1 (en) 2020-10-29
CN109154226A (en) 2019-01-04
CN109154226B (en) 2021-01-05
KR102130238B1 (en) 2020-07-03
JP2019521273A (en) 2019-07-25

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