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EP1793947B1 - Outil composite progressif pour produire des feuilles structurees - Google Patents

Outil composite progressif pour produire des feuilles structurees Download PDF

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Publication number
EP1793947B1
EP1793947B1 EP04764996A EP04764996A EP1793947B1 EP 1793947 B1 EP1793947 B1 EP 1793947B1 EP 04764996 A EP04764996 A EP 04764996A EP 04764996 A EP04764996 A EP 04764996A EP 1793947 B1 EP1793947 B1 EP 1793947B1
Authority
EP
European Patent Office
Prior art keywords
metal foil
primary
shaping area
progressive die
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04764996A
Other languages
German (de)
English (en)
Other versions
EP1793947A1 (fr
Inventor
Rudi Kolb
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.)
Unimet GmbH
Original Assignee
Unimet 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 Unimet GmbH filed Critical Unimet GmbH
Publication of EP1793947A1 publication Critical patent/EP1793947A1/fr
Application granted granted Critical
Publication of EP1793947B1 publication Critical patent/EP1793947B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00

Definitions

  • the present invention relates to a follow-on composite tool for producing a structured metal foil having at least two structures, wherein one of the two structures at least partially overlays the other structure, the follow-on composite tool consisting of a tool upper part and a tool lower part. Furthermore, the present invention relates to a method for producing a structured metal foil, which serves in particular as a catalyst carrier body.
  • Such structured metal foils are folded into long ribbons and wound into catalyst honeycomb bodies of special geometry.
  • the honeycomb bodies have a plurality of honeycomb cells, on the wall of which the catalytic process takes place on a catalytically active coating.
  • Catalysts constructed in this way are used primarily in internal combustion engines in order to reduce the pollution of the environment caused by increasing mobility.
  • metal is an ideal carrier material for the catalytically active coating due to its advantageous physico-technical properties such as high mechanical and thermal stability.
  • honeycomb cells This high stability allows extremely thin wall thicknesses of the honeycomb cells, so that a large number of honeycomb cells can be realized in a small construction volume, which additionally have a small total mass.
  • the variety of honeycomb cells allows a high conversion rate, which is achieved due to the low mass of the honeycomb body after a short warm-up time.
  • a disadvantage of this prior art is that when using interlocking, d. H. combing rolls with increasingly lower material thicknesses of the metal sheet and increasingly lower profile depths of the wave structure to burrs on introduction of the secondary structure comes, which has a very disturbing effect on the electrodeposition of the catalytically active coating, so that the conversion capacity of the catalyst is reduced, rather than increased.
  • the progressive compound tool With the aid of the progressive compound tool according to the invention, it is possible to produce extremely thin, structured metal strips in one processing step with a single tool, while maintaining the lowest manufacturing tolerances, which was previously not possible.
  • the use of a progressive compound tool reduces the formation of burrs on the workpieces so that a complete catalytically active surface can be deposited on the metal support.
  • Burrs involve the risk that the active catalyst layer dissolves in the rough operation at the location of the ridge or the burr breaks off and exposes the base material, including increased corrosion.
  • the removal of film material at certain positions in the stamping area ensures that a catalyst made from the material has a significantly higher Operating life has in everyday use, as removed by the material removal stresses within the metal foil, and notch effects at the transition areas between the primary and secondary structure can be avoided. It is sometimes desirable for metal foil to be removed at each interface between the primary and secondary structures. There are also application areas in which the film material is only removed at selected locations, for example at selected transitions between the primary structure and the secondary structure.
  • a drive for the progressive compound tool for example, offers a press, consisting of a press bed and a driven by an eccentric disc movable bear, wherein the bear is in engagement with the upper tool.
  • a press consisting of a press bed and a driven by an eccentric disc movable bear, wherein the bear is in engagement with the upper tool.
  • eccentric drive it is not necessary to provide an eccentric drive.
  • the operation of the follow-on composite tool with a hydraulic drive is possible.
  • the punching area is arranged in the feed direction of the metal foil in front of the primary and the secondary shaping area. This unnecessary but advantageous arrangement of the punching area causes the film material to be removed from the still smooth metal foil can be punched out.
  • the stamping region according to the invention significantly lower manufacturing tolerances can be maintained than if the stamping region were connected downstream of the shaping regions, for example.
  • additional work areas are provided for introducing additional structures into the metal foil. These do not necessarily have to be spatially separated from the primary and / or secondary shaping area. However, a spatial separation often offers. By providing additional work areas is achieved that a plurality of structures can be superimposed on the metal foil, so that the effective surface of the metal foil is considerably increased.
  • embossing and forming insert for introducing the secondary structure, as well as means for positioning the metal foil are provided in the secondary shaping area.
  • the means for positioning the metal foil ensure exact positioning of the metal foil in the progressive die.
  • the means for positioning the metal foil as sprung clamping means in particular consisting of a sprung guide plate with spring-loaded punch and a spring base, are formed, wherein the surfaces of the guide insert and / or the spring base at least partially as the primary structure of the metal foil are formed.
  • the special shape of the surfaces serves to be able to hold the provided with a primary structure metal foil in a first step by means of the spring-loaded clamping means.
  • the primary forming area at least one forming insert cooperating with a spring-loaded punch is provided for introducing the primary structure into the metal foil.
  • the primary structure is not over the entire length of the metal foil, but in stages, introduced. It is necessary to dimension the size of the stamp so as to ensure that a flow of film material during molding is ensured since the very thin metal foil may otherwise tear.
  • the surface of the stamp and the Umform donorses are designed so that the primary structure of the metal foil is in the form of a, preferably continuous, shaft.
  • the secondary structure again in the form of a shaft or blade, is then introduced into this primary shaft in the secondary shaping area.
  • the invention provides that each stamp or a group of adjacent punches, a lever is assigned, via which the punch or the group of punches can be actuated. High forces can be transmitted via the lever.
  • This object is achieved in that a metal foil in a follow-on composite tool in a machining operation with a first and at least one second structure is provided, the secondary structure overlying the primary structure, and removing metal foil material in all or selected transition regions between the first and at least second structures.
  • This method advantageously allows the production of extremely thin, structured metal strips in one processing step in a single tool while maintaining lowest manufacturing tolerances.
  • the method is more economical than that described in the prior art, since it can be carried out on a machine with a tool, since follow-on composite tools can punching and forming in one machining step.
  • the method reduces the formation of burrs on the workpieces so that a complete catalytically active surface can be deposited on the metal support.
  • the material removal step provided according to the invention ensures that a catalyst produced from the material has a significantly longer service life in everyday operation, which reduces stresses within the metal foil due to material removal, and notch effect at the transition regions between the first and second structures is avoided.
  • the method provides that work steps of the machining process are offset in time or individual work steps of the machining process done temporally and spatially offset.
  • the temporal offset of the work steps allows the material to flow over during the successive molding operations, so that micro-cracks or structural breaks are avoided.
  • a spatial variation of the working steps within the follow-on composite tool can also take place, so that even particularly sensitive metal foils can be processed with very good results.
  • the follow-on composite tool preferably introduces the primary and secondary structure into the metal foil as a wave structure, the effective surface without corners and edges which are disadvantageous for the galvanization becomes clear increased. Corners and edges additionally lead to the formation of dead volumes, which reduce the conversion rate of the catalyst and must therefore be avoided.
  • the formation of the structure as a wave structure also has the particular advantage that, although the effective surface, but not the flow resistance is increased beyond measure.
  • the secondary structure is introduced into the wave crests and / or into the troughs of the primary structure and wherein the waves of the secondary structure preferably have a higher frequency and a lower amplitude than the waves of the first structure.
  • sheet material is removed by punching, preferably in slot shape, in the transition region between the first and second structure.
  • the punch in the form of a slot is particularly advantageous and easy to implement, but it can also other shapes such as bone, circular or double-hole shape can be realized.
  • metal foil is processed with a thickness of 0.02 to 0.12 mm, preferably with a thickness of 0.05 mm, and with a foil width of 50 to 210 mm.
  • the metal foil is guided through at least one collection device by the progressive compound tool.
  • at least one intake device preferably two intake devices at the beginning and at the end of the follow-on composite tool, enables an optimal processing sequence.
  • FIGS. 1a to 1d By way of example, a preferred embodiment of a follow-on composite tool 1 according to the invention is shown in perspective. For the sake of clarity, some attachments have not been shown.
  • This progressive tool 1 can preferably be used in presses with a Pressenbär or a single-acting press.
  • FIG. 1b are the cutting positions of the FIGS. 1c and 1d marked.
  • the secondary forming area 2 is divided into two areas, and in the feeding direction 3 of the metal foil 4, the secondary forming area 2 is disposed behind the primary forming area 5.
  • the punching area 37 is in Figure 1c arranged in front of the primary shaping area 5.
  • the progressive tool 1 consists of an upper tool part 6, which is in engagement with a Preßbr not shown, and a lower, fixed tool part 7.
  • the upper tool part 6 consists of an upper pressure plate 8 and a lower pressure plate 9.
  • the upper pressure plate 8 is in a head plate 10, which cooperates directly with the press bear or is attached to it, embedded.
  • a punch holding plate 11 is arranged below the lower pressure plate 9.
  • the upper die 12 in Fig. 5 to be seen more clearly
  • the cutting punch 38 of the punching area are held to remove sheet material.
  • the bolts 13 are guided in the upper pressure plate 8 and lower pressure plate 9 .
  • the bolts 13 are sprung between the two plates 8, 9 by means of springs 14.
  • the spring-loaded bolts 13 act on the guided in the guide plate 15 Stamp.
  • the guide plate 15 extends over the secondary 2 and primary forming area 5.
  • a spring base 17 is provided for counter-holding, which is sprung by means of non-visible springs against a base plate (see Fig. 5 ).
  • the lower forming inserts 16 for forming the primary and secondary structures are fixed.
  • it can also advantageously have a lifting mechanism which acts as an ejector of the metal foil after the embossing process in order to be able to transport it further in the feed direction 3.
  • the primary shaping area 5 consists of a spring-loaded hold-down 36 and with this cooperating punches 20, 21.
  • Each punch 20, 21 is actuated by its own lever 22, 23.
  • Each lever 22, 23 consists of a respective bearing part 24, which holds the lever 22, 23 in a bearing block 25 pivotally and connects the punch 20 articulated with lateral spring-loaded bolts 13.
  • the sprung bolts 13 are of different lengths. This ensures that by downward movement of the upper tool part 6 of the punch 21 after the hold down the tape 4 detected. Only after this part of the primary structure has been introduced into the metal foil, the further punch 20 is actuated by a further spring-loaded bolt 13. As a result, a further part of the primary structure is introduced into the metal foil.
  • FIG. 5 the secondary forming area 2 and the primary forming area 5 are shown schematically. It puts FIG. 5a the starting position with the tool open.
  • the metal foil 4 with already introduced primary structure is located between a spring-loaded Umformgan 16 extending from the secondary shaping area 2 to the primary shaping area 5 with gaps therebetween and a spring base 17, which by means of non-visible springs against a Base plate is sprung.
  • the Umformein accounts 16 are opposite upper dies 12 for introducing the secondary structure.
  • the upper dies 12 are held within the punch holding plate 11.
  • the embossing dies 12, 16 the secondary structure is introduced into the primary structure of the metal foil 4.
  • FIG. 6 is a part of the FIG. 5 shown enlarged.
  • the forming insert 16, as well as the spring base 17 also have the primary structure in waveform. This is necessary in order to be able to clamp the metal foil 4 between the forming insert 16 and the spring base 17.
  • the secondary structure is introduced into the troughs of the primary structure of the metal foil 4.
  • the secondary structure also has a waveform, but in a higher frequency and / or smaller amplitude than the primary structure.
  • FIG. 5a is the upper tool part 6 of the progressive tool 1 in its uppermost position.
  • the die 12 Downward movement of the upper pressure plate 8, the die 12 is pressed from above against the metal foil 4. After a further downward movement, the metal foil 4 strikes the forming insert 16, the secondary structure being formed upon further closing. The metal foil is now fixed in the secondary shaping area 2 and thus positioned.
  • the embossing punch 21 is moved in the direction of the metal foil for introducing the primary structure.
  • the punch 21 presses the metal foil against the forming insert 16, whereby a part of the primary structure is introduced into the metal foil.
  • the punch 20 moves against the metal foil 4 and against the Umformdon 16. Due to the temporal sequence of the stamping processes a Nachffest of metal foil material is made possible. Tearing of the film is avoided with advantage.
  • the time can be determined, in which material is punched out of the smooth film 4.
  • the punching area 37 is located in front of the primary forming area.
  • the metal foil is transported further in the feed direction by means of a pulling feed, so that the newly introduced primary structure can be fixed in the secondary shaping area and thus positioned.
  • the primary structure must first be introduced into the metal foil over a partial region, so that the metal foil can then be held in the secondary shaping region.
  • switchable jaws lift the film at fixed lower Umformein accounts out of these.
  • intended ejector can support the dissolution of the film surface. Then the film is free for transport.
  • the positioning of the metal foil may also advantageously be adjacent to that of the secondary forming area Stamp 36 will be accepted. It is particularly advantageous if the distances of the primary and / or secondary shaping area and / or punching area from each other are adjustable to compensate for different material behavior.
  • FIG. 4 the metal foil 4 is shown after passing through the secondary shaping region 2.
  • the punched outs were not shown.
  • the secondary structure 39 was introduced into the wave crests 40 of the primary structure 41 by means of the upper stamping die.
  • the secondary structure 39 has been introduced into the wave troughs 42 of the primary structure 41 in the form of small wave crests.
  • FIG. 2 is a metal foil 4 produced by means of the method and by means of the device according to the invention, before the secondary structure is formed. This is generated later between the punch-outs 35.
  • the primary structure 41 is z. B. a shaft of about 2.5 millimeters in length and about 1.6 millimeters in height.
  • the wavelike secondary structure 39 (FIG. Fig. 4 ) has z. B. a length of about 1 millimeter and a height of about 0.5 millimeters.
  • FIG. 3 shows a cross section through a corrugated metal foil 4, wherein cutting plane in the FIG. 2 marked mark III-III is located.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (12)

  1. Outil à suivre composé pour la fabrication d'un film métallique structuré avec au moins deux structures, l'une des deux structures se superposant au moins partiellement à l'autre structure, l'outil à suivre composé consistant dans une partie supérieure d'outil et dans une partie inférieure d'outil, l'outil à suivre composé (1) comportant au moins trois zones de travail (2, 5, 37), notamment séparées dans l'espace, à savoir une zone de découpage (37) pour enlever de la matière du film sur des positions déterminées du film métallique (4), une zone de façonnage primaire (5) pour ménager la structure primaire (41), de préférence ondulée dans le film métallique (4) et une zone de façonnage secondaire (2), pour ménager la structure secondaire (46), de préférence ondulée dans le film métallique (4), de préférence dans la structure primaire (41) du film métallique (4), au moins un insert de déformation (16) coopérant avec un poinçon sur ressort (36, 20, 21) étant prévu dans la zone de façonnage primaire (5), pour ménager la structure primaire (41) dans le film métallique (4), un levier (22, 23), par l'intermédiaire duquel le poinçon (20, 21), respectivement le groupe de poinçons est susceptible d'être actionné étant associé à chaque poinçon (20, 21) ou à un groupe de poinçons voisins.
  2. Outil à suivre composé selon la revendication 1, caractérisé en ce que dans la zone d'introduction (3) du film métallique (4), la zone de découpage (37) est disposée en amont de la zone de façonnage primaire et secondaire (2, 5).
  3. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que des zones de travail additionnelles sont prévues en supplément, pour ménager des structures additionnelles dans le film métallique.
  4. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que des zones de travail additionnelles sont prévues en supplément, pour ménager des zones de transition entre deux ou plusieurs structures.
  5. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que des poinçons de gaufrage (12) pour ménager la structure secondaire, ainsi que des moyens (17) pour le positionnement du film métallique (4) sont prévus dans la zone de façonnage secondaire (5).
  6. Outil à suivre composé selon la revendication 5, caractérisé en ce que les moyens (16, 17) pour le positionnement du film métallique (4) sont réalisés en tant que moyens de serrage sur ressort, consistant dans une plaque de guidage sur ressort (15) avec un insert de déformation plastique sur ressort (16) et un fond sur ressort (17), les surfaces de l'insert de déformation plastique sur ressort (16) et/ou du fond sur ressort (17) pouvant être conformées au moins partiellement comme la structure primaire du film métallique.
  7. Outil à suivre composé selon la revendication 6, caractérisé en ce que l'insert de déformation plastique sur ressort (16) de la zone de façonnage secondaire (2) se poursuit dans la zone de façonnage primaire (5).
  8. Outil à suivre composé selon la revendication 7, caractérisé en ce que dans la zone de façonnage primaire (5), la surface du poinçon (20, 21) et celle de l'insert de déformation plastique sur ressort (16) est conçue de sorte que la structure primaire (41) du film métallique (4) donne la forme d'une onde, se poursuivant de préférence.
  9. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la zone de façonnage primaire (5), plusieurs, de préférence au moins deux poinçons (20, 21) sont disposés les uns derrière les autres dans l'espace, dans le sens d'introduction (3) du film métallique (4) et sont susceptibles d'être actionnés successivement, notamment à l'encontre du sens d'introduction (3) du film métallique (4).
  10. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la zone de façonnage primaire (5), à plusieurs poinçons est chaque fois associé un boulon (13), de préférence sur ressort, qui est en liaison active avec la partie supérieure de l'outil (6) ou avec la partie inférieure de l'outil (7), et les boulons (13) présentant une longueur différente, de sorte à être adaptés les uns aux autres pour que les poinçons (20, 21) puissent être actionnés successivement dans le temps.
  11. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la zone de façonnage primaire (5), c'est d'abord le poinçon (21) le plus proche de la zone de façonnage secondaire (2) qui est susceptible d'être actionné et ensuite les autres poinçons (20) sont susceptibles d'être actionnés en séquence, à l'encontre du sens d'introduction (3) du film métallique (4).
  12. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que les écarts mutuels entre la zone de façonnage primaire et la zone de façonnage secondaire ou entre la zone de façonnage secondaire et la zone de découpage sont réalisés pour être réglables.
EP04764996A 2004-09-09 2004-09-09 Outil composite progressif pour produire des feuilles structurees Expired - Lifetime EP1793947B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/010061 WO2006027008A1 (fr) 2004-09-09 2004-09-09 Outil composite progressif pour produire des feuilles structurees

Publications (2)

Publication Number Publication Date
EP1793947A1 EP1793947A1 (fr) 2007-06-13
EP1793947B1 true EP1793947B1 (fr) 2008-12-17

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EP04764996A Expired - Lifetime EP1793947B1 (fr) 2004-09-09 2004-09-09 Outil composite progressif pour produire des feuilles structurees

Country Status (7)

Country Link
EP (1) EP1793947B1 (fr)
AT (1) ATE417681T1 (fr)
DE (1) DE502004008713D1 (fr)
DK (1) DK1793947T3 (fr)
ES (1) ES2319901T3 (fr)
PT (1) PT1793947E (fr)
WO (1) WO2006027008A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441983A (en) * 2006-07-14 2008-03-26 Aea Technology Plc Catalytic structures for use in catalytic reactors
DE102011050383B4 (de) 2011-05-16 2017-04-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bearbeitungswerkzeug mit mindestens zwei Arbeitsstationen
CN102601210B (zh) * 2012-03-16 2015-01-07 山东海华汽车部件有限公司 板簧簧片单切边模具
CN103495662B (zh) * 2013-09-30 2015-04-22 大连益联金属成型有限公司 一种管夹的生产专用模具组
CN106270124A (zh) * 2015-05-26 2017-01-04 苏州工业园区金鑫模具制造有限公司 高速冲网孔模具

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1301667A (fr) * 1969-05-09 1973-01-04
DE10031095B8 (de) * 2000-06-30 2011-08-04 ElringKlinger AG, 72581 Verfahren zum Herstellen einer mehrlagigen Dichtung und Dichtung
DE10304814C5 (de) * 2003-02-06 2009-07-02 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Werkzeug zur Herstellung von strukturierten Blechlagen; Katalysator-Trägerkörper
DE10311174A1 (de) * 2003-03-12 2004-09-23 Unimet Gmbh Verfahren zur Herstellung einer strukturierten Metallfolie

Also Published As

Publication number Publication date
DK1793947T3 (da) 2009-04-14
ATE417681T1 (de) 2009-01-15
ES2319901T3 (es) 2009-05-14
PT1793947E (pt) 2009-03-24
DE502004008713D1 (de) 2009-01-29
EP1793947A1 (fr) 2007-06-13
WO2006027008A1 (fr) 2006-03-16

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