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WO2008046596A1 - Procédé et outil pour produire des dispositifs pour acheminer des gaz d'échappement - Google Patents

Procédé et outil pour produire des dispositifs pour acheminer des gaz d'échappement Download PDF

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Publication number
WO2008046596A1
WO2008046596A1 PCT/EP2007/008990 EP2007008990W WO2008046596A1 WO 2008046596 A1 WO2008046596 A1 WO 2008046596A1 EP 2007008990 W EP2007008990 W EP 2007008990W WO 2008046596 A1 WO2008046596 A1 WO 2008046596A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
tool
pressure
jaws
pressure jaws
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.)
Ceased
Application number
PCT/EP2007/008990
Other languages
German (de)
English (en)
Inventor
Peter Kroner
Manfred Stiglmair
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.)
Faurecia Emissions Control Technologies Germany GmbH
Original Assignee
Emcon Technologies Germany Augsburg 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 Emcon Technologies Germany Augsburg GmbH filed Critical Emcon Technologies Germany Augsburg GmbH
Publication of WO2008046596A1 publication Critical patent/WO2008046596A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by expanding or crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/03—Catalysts or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/02—Fitting monolithic blocks into the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof

Definitions

  • the invention relates to a method and a tool for producing exhaust-gas-cleaning devices, in particular diesel particle filters or catalysts.
  • winding in which a sheet is wound around the insert. In the desired end position of the sheet edge is welded in the overlapping region of the sheet metal edges.
  • the winding itself is done by machine with the aid of a chain-like structure which engages the shell and initially pushes it away from the edges and then increasingly towards the edges, wrapping it around the insert.
  • Another method of winding is to place a very highly preformed sheath around the insert and then place the unit in a receptacle adapted to the later form of the device.
  • pressure jaws are then fed toward one another, which push the edges one above the other into the end position, in which the overlapping edges are then welded together.
  • the inserter is inserted into an oversized, circumferentially already closed tube, and the resulting unit is then placed in a tool that is provided with numerous radially inwardly movable pressure jaws.
  • the pressure jaws are either provided on their inside with a cylindrical segment-shaped inner surface, the engages the jacket, or it will be attached to the pressure jaws still suitably trained moldings.
  • the jaws When the jaws are moved radially inwardly, they plastically deform the sheath so far that the insert is clamped in the sheath.
  • the tool is several meters long, because the relatively high radial force is achieved via a wedge effect of mutually movable parts.
  • a linearly movable carriage moves several wedge-shaped parts, which complement each other to form a funnel, in the longitudinal direction and displaces slowly, but very precisely metered, the pressure jaws radially inwardly.
  • a third, commonly used method is clamping over so-called
  • the jacket is preferably divided into two half-shells, wherein the insert is positioned in the lower shell and the upper shell is then moved against the lower shell. When the shell halves are then in contact with each other, they are welded together at their contacting edges. Since the shells have an undersize with respect to the depositor, takes place when moving the shells, a clamping of the insert.
  • the corresponding tool is in the present case, only a substantially vertically movable press with a lower receptacle for the lower shell and an upper mold part for receiving the upper shell.
  • the invention provides a more cost effective method and tool that enables high output rates.
  • the method according to the invention is used to produce exhaust-gas-cleaning devices and uses a tool with inwardly and outwardly movable pressure jaws and is characterized by the following steps: a) the insert is moved from a front side into a working space formed between the pressure jaws, b) the jaws are moved together and exert a radially inwardly directed pressure on the insert from, c) the jaws are moved apart again, d) the insert is removed on the front side opposite the back of the work space, and e) another insert is on the Promoted front into the working space, so that the depositors are promoted in naturalflußbat by the tool.
  • the workpiece is conveyed through the tool according to the flow principle, i. the machined or measured workpiece is fed to the front of the tool and taken from an opposite back of this again.
  • the machined or measured workpiece is fed to the front of the tool and taken from an opposite back of this again.
  • the method is on the one hand for the so-called pressure measurement of inserts suitable in which they are compressed in the tool to measure their resistance during compression, so that later during canning the data for each depositor specific data can be used and the required clamping force can be set exactly ,
  • the data obtained for the depositor are stored in a memory.
  • the inventive method can also be used in Canning itself.
  • the unit is made of depositors including coat transported by the tool and compressed therein from the outside to clamp the insert in the jacket.
  • the jacket is either wound, calibrated, or shell shells are pushed together.
  • the jacket is still welded in the tool during winding and pushing together.
  • the transport of the workpiece is preferably fully automatic. - -
  • the tool according to the invention which is used in particular for carrying out the method explained above, has in and outwardly movable pressure jaws which delimit a working space and an annular support on which the pressure jaws are mounted. Open front and back sides of the tool in the area of the working space allow the aforementioned flow principle. Alternatively, of course, front and back can be temporarily closed during the collapse of the pressure jaws for safety reasons.
  • the tool preferably has a support for the pressure jaws attached to it, which surrounds the working space.
  • This carrier is in particular plate-shaped and runs perpendicular to the conveying direction, so that the axial construction of the tool is very small, so that an easy feeding and removal of the workpieces is made possible.
  • some build several meters long, such a supply and removal is not possible due to the overlong working space.
  • Another measure that allows the compact axial size of the tool is a common, annular drive member for the pressure jaws, which moves by a rotation of the pressure jaws inwardly.
  • the drive member may be provided with a translation portion, with which the pressure jaws are coupled and over which the rotational movement is converted into an inward movement of the pressure jaws.
  • These translation sections are e.g. Cams, separate parts with cams, slide guides or linkage.
  • cams are used, which migrate along the associated pressure jaws during the movement of the drive part and adjust the respective pressure jaws.
  • the supply and removal of the workpiece is advantageously carried out via a conveyor system which transports the workpiece into and out of the working space.
  • FIG. 1 shows a longitudinal sectional view through an apparatus according to the invention in the form of an exhaust gas catalytic converter or diesel particle filter,
  • FIG. 2 shows a front view, partly in section, through a tool according to the invention for carrying out the method according to the invention
  • FIG. 3 shows a sectional view through the tool according to FIG. 2 along the line MI-III;
  • FIG. 4 shows a schematic front view through the tool during winding together with the device located therein
  • FIG. 5 is a schematic front view of the tool according to the invention when connecting shell shells and
  • FIG. 6 is a schematic view of the tool according to the invention during pressure measurement of the insert.
  • FIG. 1 shows an exhaust-gas-conducting device accommodated in a motor vehicle in the form of a vehicle exhaust gas purification device which is either an exhaust gas catalytic converter or a diesel particulate filter or a combination of both.
  • an elongate, cylindrical substrate 10 which consists for example of a ceramic substrate or a type of wound corrugated cardboard or another catalytic carrier or filter material with or without coating.
  • the substrate 10 may have a circular cylindrical cross section or a non-circular cross section. Only for the sake of simplicity, a circular cylindrical cross section is shown in the figures.
  • the substrate 10 is surrounded by a bearing mat 12, which serves as an elastic compensation element between the substrate and an outer housing, in the following jacket 14 - -
  • the jacket 14 is made very thin-walled and in particular made of sheet metal. Upstream and downstream of the jacket 14, an inflow funnel 16 and a discharge funnel 18 are connected.
  • the substrate 10 forms, together with the bearing mat 12, a prefabricated unit, which is referred to below as a depositor.
  • exhaust gas flows via the inflow funnel 16 in the end into the substrate 10 and finally leaves the substrate 10 at the opposite end face with fewer pollutants, in order to leave the cleaning device via the outflow funnel 18.
  • the device is manufactured by means of a tool, which in the figures
  • the tool comprises a base 20 and a plate-shaped, vertical support 22 having a central opening 24 (see FIG. 3).
  • the tool is largely symmetrically aligned with a central axis M, which also forms the central axis of the opening 24.
  • the inside of the housing 26 serves as a sliding bearing surface for a rotatable about the central axis M drive member 28.
  • the drive member 28 is made in several pieces and includes a collar 30, the outside of
  • the translation sections 32 are circular segments whose inner sides each have a continuous from one to the other circumferential end increasingly closer to the central axis M control cam 34.
  • the translation portions 32 are fixed, for example via numerous screws 36 on the adjusting ring 30.
  • a housing 26 attached to the disk 38 see Fig. 3).
  • a bearing arm 40 for a drive 42 in the form of a hydraulic cylinder is connected to the adjusting ring 30.
  • the drive member 28 can be rotated clockwise and counterclockwise in the housing 26.
  • a direct drive on the adjusting ring 30 would be advantageous, especially if the position of the adjusting ring 30 is known and is incrementally adjusted.
  • On the illustrated front of the carrier 22 are a plurality of evenly distributed on the circumference, spaced apart pressure bak- kenechen 44 attached.
  • Each jaw unit 44 includes a Druckbak- ken 46 with a linearly movable plunger 48 and a pressure roller 50 which is attached to the outer end of the plunger 48 and rests on the associated control cam 34.
  • Each plunger 48 is stably supported in a guide bushing 52. From a plunger 48 surrounding the return spring 54 which engages on the one hand on the plunger 48 via an adjusting nut 56 and on the other hand on the guide bushing 52, each plunger 48 is subjected to a force radially outward. The return spring 54 thus ensures that the pressure roller 50 rests in any position on the control cam 34.
  • Each jaw unit 44 is associated with a bearing block 58 which is connected to the central axis M through a pivot bearing 60 with the carrier 22 and via screws 62 seated in slots with the carrier 22. Since the screws 62 extend in arcuate oblong holes, each pressure jaw unit 44 can be aligned at an angle to the central axis M.
  • each pressure jaw unit 44 is assigned its own translation section 32 with its own control curve 34.
  • the translation portions 32 are arranged sequentially in the circumferential direction.
  • a so-called shaped part 64 also called a shaping jaw, is fastened on each plunger 48 so as to be easily interchangeable via a screw connection (see FIG. 3).
  • each pressure jaw unit 44 For the sake of clarity, not all parts for each pressure jaw unit 44 are shown in FIG. 2, eg only a single jaw unit (the one at 3 o'clock) is shown with a plunger 48 and a return spring 54 which can be clearly seen in its outlines. - -
  • FIG. 2 also shows a rotation stop 66, which may optionally be fastened in different directions in the circumferential direction, which is attached to the housing 26 and cooperates with a stop 68 on the bearing arm 40.
  • the molded parts 64 have a radial inner side 70, which together define a working chamber 72 and, when driven maximally radially inward, define the later outer geometry of the jacket 14 of the housing during canning.
  • the tool is configured so that all the jaw units 44 are active, i.e., on the one hand, all the jaw units are provided with a molding 64 and, on the other hand, there is force transmission between each ram 48 and the drive 42.
  • This prefabricated unit (also referred to below as a workpiece) is positioned between the mold parts 64. Subsequently, the drive 42 is actuated, which leads to a rotation of the adjusting ring 30 and the control cams 34. About the translation portions 32, the rotational movement into numerous individual linear movements, namely that of the pressure jaws 46 is converted when the pressure rollers 50 roll along the cams 34 and drive the plunger 48 inward due to the inward-facing path.
  • the moldings 64 deform the shell 14 very uniformly circumferentially plastically, i. they calibrate the jacket 14 and cause the insert to be clamped sufficiently radially in the jacket 14.
  • the movement can take place up to the contact of the stops 66, 68 or pressure and / or position-controlled, wherein an incremental control can also be provided.
  • the elaborate controls allow an exact clamping of the insert in narrow, predetermined limits.
  • the pressure jaws 46 are then moved outward by reversing the drive 42, and the device produced is in the conveying direction F, which consequently does not change between supply and removal of the workpiece, through the opening 24 on the front side opposite rear side 104 of Tool fully automatically transported out by means of the conveyor system 102 (see workpiece with broken lines in Figure 3).
  • the tool thus operates on the flow principle. Simultaneously with the removal of the workpiece produced already the supply of the still to be calibrated workpiece in the tool, so that there are low cycle times.
  • the tool shown in Figure 2 is a universal tool that is also used for other processes in the manufacture of the exhaust gas delivery device, for example, when winding the jacket 14 around the insert.
  • the tool for the winding of a jacket 14 has been converted.
  • an individually adapted set of molded parts 64 ' is provided, which does not correspond to the first set of molded parts 64 shown in FIG.
  • the lower jaw (at 6 o'clock) is provided with an oversized, half-shell molded part 64 ', its associated control curve 34 is located either on a circular ring, i. there is no wedge effect and no displacement of the plunger 48, or the associated plunger 48 has been fixed in other ways axially non-displaceable, so that the molded part 64 'can act as an abutment and absorbs forces.
  • the translation portions 32 may also be adjustably mounted on the adjusting ring 30, so that for other workpieces or methods to be used, the translation portions 32 need only be adjusted, as indicated by the pivotable translation portion 32 a.
  • the horizontally left and right extending jaw units 44 are either disabled as the lower jaw unit and are positionally stable and thus acting as an abutment pressure jaws, or they are radially inwardly displaceable, i. activated.
  • the top right and top left pressure jaw units 44 are pivoted in the direction of the horizontal axis and that by the angle ⁇ . This is very easy in view of the pivot bearing 60. Simplified symbolized are their individually tailored to them translation sections 32 'shown. The control cams 34 'together with the translation sections 32 "are slightly shifted in their position compared with the associated position in Figure 2, to adapt them to the new angular orientation of the pivoted upper jaw units 44.
  • the upper jaw assembly at 84 may either be omitted, disabled, or also enabled, it is not critical for simplicity and principal.
  • the unit of jacket 14 and insert is retracted from the front 100 in the conveying direction F fully automatically in the working space 72.
  • the jacket 14 is already somewhat preformed and adapted to the circular shape, it is about the final closing of the shell 14 and the achievement of the clamping force.
  • the workpiece is in the lower mold part 64 ', optionally held laterally by positionally stable, deactivated mold parts 64' at 3 o'clock and 9 o'clock. Alternatively, these mold parts 64 'can also be driven slightly radially inward.
  • the two upper pressure jaws 46 ' are maximally driven outwards.
  • the drive 42 is moved.
  • the tool can also be further converted to according to Figure 5 shell shells 114, 214, which are welded to form a shell to move toward each other, so that the insert is clamped in the resulting jacket.
  • shell shells 114, 214 which are welded to form a shell to move toward each other, so that the insert is clamped in the resulting jacket.
  • only one lower mold part 64 "and one upper mold part 64" are necessary, all six lateral pressure jaw units 44 are deactivated. Also, the lower jaw 46 "is disabled, but in this case stable, so that they can serve as an abutment.
  • the upper pressure jaw 46 "with its half-shell-like molded part 64" is active, and is also assigned an individual translation section 32 ".
  • Molded part 64 ".
  • the upper jacket shell 214 is, from the lower shell shell 114 spaced, placed on the depositor or attached to the movable mold part 64.
  • the pressure jaw 46 is subsequently moved downwards until the outwardly bent flanges 116 of the shell shells touch each other.
  • the sheath shells 114, 214 are now welded together.
  • the finished workpiece is moved out of the workpiece via the opening 24 while the conveying direction F remains the same, and at the same time a new workpiece is fed to the tool.
  • This pressure measurement can be carried out with more or less activated pressure jaws 46.
  • the pressure measurement is preferably carried out for each depositor prior to canning and more preferably in the tool configuration in which the canning is subsequently performed. In this use of the tool, it serves as a measuring device, via which the pressure is applied, which simulates the later pressure during Canning or is extrapolated on the latter at this later pressure.
  • the tool serves as a measuring device, in which the resilience of the to be installed, preferably even each insert to be installed is determined.
  • the insert is inserted in the conveying direction F in the tool and by at least one pressure jaw 46 '", preferably a plurality of pressure jaws
  • the pressure jaws 46 '' are coupled to load cells 120 which constantly sense the applied force and which can either be permanently provided or for this purpose - -
  • Single process step between power transmitting parts can be installed.
  • About the force can also be determined on the insert laterally on the circumference inward pressure.
  • the force applied to the inserter is steadily increased until a predetermined pressure is reached.
  • the travel path is picked up in a punctiform or continuous manner parallel to the pressure.
  • the predetermined pressure may be the desired pressure corresponding to the target deformation, with which the insert should later be clamped in the outer housing 14 ,
  • the tool is coupled to a corresponding controller 126, in which the determined measurement data are stored, so that the controller 126 also serves as a memory.
  • the illustrated tool serves four individual process steps, of which three are canning methods and one measuring method.
  • the tool should preferably be designed in such a way that at least two of the canning methods can be carried out via the individually activatable or controllable pressure jaws 46 connected to the associated individual shaped parts 64.
  • each pressure jaw 46 could be provided with its own drive, eg a separate electric drive or hydraulic drive. - -

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un procédé permettant de produire des dispositifs pour acheminer des gaz d'échappement, notamment des filtres à particules Diesel ou des pots catalytiques, qui présentent un boîtier et un insert fixé dans le boîtier et parcouru par des gaz d'échappement. Ledit procédé fait appel, pour sa mise en oeuvre, à un outil comportant des mâchoires de compression (64) déplaçables vers l'intérieur et vers l'extérieur. L'insert ou l'unité composée de l'insert et de l'enveloppe (14) est introduit(e) dans l'espace de travail (72) par une face avant (100) et est ressorti(e) dudit espace de travail (72) dans le même sens, de sorte que les dispositifs traversent l'outil, selon le principe d'écoulement.
PCT/EP2007/008990 2006-10-18 2007-10-17 Procédé et outil pour produire des dispositifs pour acheminer des gaz d'échappement Ceased WO2008046596A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610049237 DE102006049237A1 (de) 2006-10-18 2006-10-18 Verfahren und Werkzeug zum Herstellen von abgasreinigenden Vorrichtungen
DE102006049237.4 2006-10-18

Publications (1)

Publication Number Publication Date
WO2008046596A1 true WO2008046596A1 (fr) 2008-04-24

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ID=38844987

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/008990 Ceased WO2008046596A1 (fr) 2006-10-18 2007-10-17 Procédé et outil pour produire des dispositifs pour acheminer des gaz d'échappement

Country Status (2)

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DE (1) DE102006049237A1 (fr)
WO (1) WO2008046596A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017660A1 (fr) * 1979-04-17 1980-10-29 Jorma Lillbacka Presse hydraulique
US5960529A (en) * 1994-11-07 1999-10-05 Emitec Gessellschaft Fuer Emissionstechnologie Mbh Apparatus and method for deforming a jacket tube of a honeycomb body
WO2002024374A1 (fr) * 2000-09-22 2002-03-28 Uniflex-Hydraulik Gmbh Presse radiale
EP1344911A1 (fr) * 2002-03-05 2003-09-17 Sango Co., Ltd. Méthode et appareil pour la production d'un boitier pour un élément de type colonne
EP1482140A1 (fr) * 2003-05-29 2004-12-01 Sango Co., Ltd. Procédé de fabrication d'un appareil pour le traitement de fluides ayant un élément en nid d'abeille
US20050005446A1 (en) * 2001-05-18 2005-01-13 David Mayfield Method and apparatus for manufacturing a catalytic converter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017660A1 (fr) * 1979-04-17 1980-10-29 Jorma Lillbacka Presse hydraulique
US5960529A (en) * 1994-11-07 1999-10-05 Emitec Gessellschaft Fuer Emissionstechnologie Mbh Apparatus and method for deforming a jacket tube of a honeycomb body
WO2002024374A1 (fr) * 2000-09-22 2002-03-28 Uniflex-Hydraulik Gmbh Presse radiale
US20050005446A1 (en) * 2001-05-18 2005-01-13 David Mayfield Method and apparatus for manufacturing a catalytic converter
EP1344911A1 (fr) * 2002-03-05 2003-09-17 Sango Co., Ltd. Méthode et appareil pour la production d'un boitier pour un élément de type colonne
EP1482140A1 (fr) * 2003-05-29 2004-12-01 Sango Co., Ltd. Procédé de fabrication d'un appareil pour le traitement de fluides ayant un élément en nid d'abeille

Also Published As

Publication number Publication date
DE102006049237A1 (de) 2008-04-24

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