EP1457275B1 - Outil à suivre pour presse d'emboutissage - Google Patents

Outil à suivre pour presse d'emboutissage Download PDF

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Publication number
EP1457275B1
EP1457275B1 EP03015765A EP03015765A EP1457275B1 EP 1457275 B1 EP1457275 B1 EP 1457275B1 EP 03015765 A EP03015765 A EP 03015765A EP 03015765 A EP03015765 A EP 03015765A EP 1457275 B1 EP1457275 B1 EP 1457275B1
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EP
European Patent Office
Prior art keywords
metal foil
punching press
progressive die
primary
punch
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
EP03015765A
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German (de)
English (en)
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EP1457275A1 (fr
Inventor
Kolb Rudi
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Unimet GmbH
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Unimet GmbH
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Publication date
Application filed by Unimet GmbH filed Critical Unimet GmbH
Publication of EP1457275A1 publication Critical patent/EP1457275A1/fr
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    • 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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • B21D31/043—Making use of slitting discs or punch cutters

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 physical-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 volume, which additionally has a low 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 it comes with the use of combing rollers with increasingly lower material thicknesses of the metal sheet and increasingly lower profile depths of the wave structure to burrs upon introduction of the secondary structure, which has a very disturbing effect on the electrodeposition of the catalytically active coating, so that the conversion ability of the catalyst is lowered rather than increased.
  • a bending unit having a plurality of working areas which embosses a primary and a secondary structure into a 0.127 mm thick metal foil to produce a heat exchanger body with the primary structure folded and the secondary structure discontinuous with sharp edges is trained.
  • Such sharp edges are disadvantageous for the formation of a catalytically active coating.
  • the follow-on composite tool has at least three, in particular spatially separated, working areas, namely a punching area for removing foil material at certain positions of the metal foil, a primary forming area for introducing the preferably corrugated primary structure in the metal foil and a secondary forming area for introducing the, preferably corrugated, secondary structure into the metal foil, preferably into the primary structure of the metal foil.
  • the progressive compound tool With the aid of the progressive compound tool according to the invention, it is possible to use extremely thin, structured metal strips in one processing step a single tool, while maintaining minimum manufacturing tolerances to produce.
  • the manufacture of the metal strips is more economical than with the device described in the prior art, since the metal foil is processed on a machine with a tool, since progressive dies can punch and shape with a single processing step.
  • the use of a follow-on compound tool reduces the formation of burrs on the workpieces so that a complete catalytically active surface can be deposited on the metal support.
  • the removal of film material at certain positions in the stamping area ensures that a catalyst produced from the material has a significantly higher lifetime in everyday operation, as the removal of material tensions within the metal foil degraded, and notch effects at the transition areas between the primary and secondary structure are 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 for example, 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 dies for introducing the secondary structure as well as means for centering the metal foil are provided.
  • the means for centering the metal foil ensure an exact positioning of the metal foil in the progressive tool.
  • embossing dies are advantageously provided in the upper part of the tool and in the lower part of the tool.
  • the secondary structure is introduced into the wave crests of the primary structure by means of the embossing dies in the tool upper part.
  • the embossing dies in the tool lower part serve to introduce the secondary structure into the troughs of the primary structure.
  • the waves of the secondary structure preferably have a higher frequency and a lower amplitude than the waves of the primary structure.
  • the means for centering the metal foil as sprung clamping means in particular consisting of a sprung guide plate with guide insert and a spring base, are formed, wherein the surfaces of the guide insert and / or the spring base at least partially formed as the primary structure of the metal foil are.
  • 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 shaping area at least one stamp cooperating with a sprung guide plate 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 lower punch are rigid and the upper punch, for example, via toggle lever are movable.
  • the sprung guide plate with guide insert of the secondary Forming area continues in the primary forming area.
  • the sprung guide plate with guide insert thus has a double function.
  • In the secondary forming area it serves as a part of the clamping means for centering the metal foil, while in the primary forming area it serves to shape the metal foil and cooperates with a punch.
  • the surface of the punch and that of the sprung guide insert are designed such that the primary structure of the metal foil results in the shape of a, preferably continuous, shaft.
  • the secondary structure again in the form of a shaft, is then introduced into this primary shaft in the secondary shaping area.
  • a plurality, preferably at least two, punches in the feed direction of the metal foil spatially arranged one behind the other and successively, in particular against the feed direction of the metal foil are actuated.
  • the surface of each stamp on a partial section of the primary structure for introduction into the metal foil is ensured that enough foil material can flow in each stamping process to avoid cracking of the metal foil with advantage.
  • each toggle lever mechanism consists of a central part, which is articulated via at least two toggle with the punch and at least two other toggle with a base plate, wherein the middle part is arranged with the knee levers so that the punch by a Sideways movement of the middle part is actuated. As sideways movement here the pivoting movement of the middle part is called.
  • each toggle mechanism or each group of toggle mechanisms is associated with a drive for converting a vertical movement of the upper tool part or the lower tool part into a sideward movement of the middle part of the toggle mechanism.
  • each drive is associated with a pin which is in operative connection with the upper die or tool lower part, preferably sprung, with the pins of the individual drives having a different length , In this way, it is to be achieved that first the stamp or the nearest stamp group closest to the secondary forming area is actuated, and then the further stamps or stamp groups are actuated in order counter to the feed direction of the metal foil.
  • a further object of the present invention was to provide a method that allows the production of very thin, structured metal foil with a large surface while maintaining high quality standards.
  • This object is achieved by providing a metal foil in a progressive tool in a machining operation with a first and at least one second structure, wherein the secondary structure overlays the primary structure, and in all of them or selected transition regions between first and at least second structure metal foil material is removed.
  • This method according to the invention advantageously allows the production of extremely thin, structured metal strips in one processing step in a single tool while maintaining the lowest possible manufacturing tolerances.
  • the method according to the invention is more economical than that described in the prior art, since it can be carried out on a machine with a tool, since progressive dies can be punched and formed in one machining step.
  • the inventive 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 tensions within the metal foil are reduced by material removal, and notch effect at the transitional areas 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 is significantly increased without corners and edges which are disadvantageous for the galvanization. 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 the invention also includes other shapes such as bone, circular or double-hole shape.
  • 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.
  • the use of at least one collection device, preferably two collection devices at the beginning and at the end of Follow-on composite tool enables an optimal processing sequence.
  • the metal foil is clamped and centered in the secondary shaping area in a first working step between a follow-on composite top and a follow-on composite bottom, whereupon the secondary structure is introduced into certain troughs of the primary structure within the secondary forming area, whereupon the Primary structure is introduced by means of at least one punch in the metal foil, whereby foil material is drawn in the feed direction, before, during or subsequently punched out in the punching metal foil material by cutting die and in the same or after or previously stored step, the secondary structure is introduced into certain peaks of the primary structure.
  • FIG. 1 shows a follow-on composite tool 1.
  • This progressive tool 1 can preferably be used in presses with a Pressenbär or a single-acting press.
  • the secondary shaping area 2 is arranged in the feed direction 3 of the metal foil 4 behind the primary forming area 5.
  • the punching area is not shown in FIG. However, it is arranged in the feed direction of the metal foil 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 press bear, 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, embedded.
  • a punch holding plate 11 is arranged below the lower pressure plate 9.
  • the upper die 12 (shown in Fig. 5) are fixed for introducing the secondary structure in the secondary forming region.
  • the cutting punch of the punching area held to remove foil 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 a guide plate 15.
  • the guide plate 15 extends over the secondary 2 and primary forming region 5. In FIG. 1, it can only be seen that the guide plate 15 with the guide insert 16 extends beyond the secondary shaping region 2. This was necessary for clarity.
  • the guide plate 15 continues in the primary as in the secondary shaping area down in a guide insert 16.
  • the surface of the guide insert 16 is configured in the form of the primary structure of the metal foil.
  • a spring base 17 is provided below the spring-loaded guide insert 16, which is sprung by means of springs 18 relative to a base plate (see FIG. 5).
  • the primary shaping area 5 consists of a sprung guide plate 15 with a guide insert 16 and with this cooperating punches 20, 21.
  • Each punch 20, 21 is actuated via its own toggle lever mechanism 22, 23.
  • Each toggle mechanism 22, 23 each consists of a central portion 24 which is pivotally connected via upper knee lever 25 with the respective punch 20.
  • lower knee lever 26 are provided, via which the middle part 24 is pivotally connected to a base plate 27.
  • Each toggle mechanism 22, 23 is associated with a drive 28, 29.
  • By means of the drives 28, 29 is the vertical downward movement of the upper tool part 6 is converted into a sideways movement of the central part 24.
  • the punches 20, 21 are pressed against the metal foil and against the guide insert 16 with guide plate 15.
  • Each drive 28, 29 consists of a spring-loaded pin 30, which is guided in the frame plate.
  • the spring-loaded bolt 30 strikes the boom 31 of a rocker 32.
  • the rocker is in articulated engagement with the central part 24 of the toggle lever 22 and is articulated in the follow-on composite tool.
  • the middle part 24 is pivoted to the right, which has an upward movement of the punch 20 result.
  • the punch 20 By means of the punch 20, a part of the primary structure is pressed into the metal foil 4.
  • the return movement of the central part 24 by a spring 33, between a further arm 34 of the rocker 32 and the punch plate 11 is carried out.
  • the other drives are designed accordingly. It is possible, depending on the arrangement of the toggle lever and the bolt 30, as well as the rocker 32, the drive pulling or pushing on the central portion 24 acting form.
  • the sprung bolt 30 is formed shorter than the spring-loaded bolt 35 of the drive 29. This ensures that the drive 29 and thus first the toggle lever 23 and thus the punch 21 are moved by downward movement of the upper tool part 6 first.
  • Stamp 21 is the stamp directly adjacent to the secondary forming area. Only after this part of the primary structure has been introduced into the metal foil is the further punch 20 actuated by the spring-loaded bolt 30. As a result, a further part of the primary structure is introduced into the metal foil. By dividing the primary structure on a plurality of punches 20, 21, it is achieved that metal foil material can flow from the feed direction in order to avoid tearing of the metal foil.
  • toggle mechanisms it is possible to convert the downward movement of the upper tool part 6 in the stamp movement.
  • Figure 5 represents the starting position.
  • the metal foil 4 with already introduced primary structure is located between a sprung guide insert 16 which extends from the secondary shaping area 2 to the primary shaping area 5 and a spring base 17, which is sprung by means of springs 18 against a base plate ,
  • Within recesses of the guide insert 16 are upper dies 12 for introducing the secondary structure.
  • the upper dies 12 are held within the punch holding plate 11.
  • fixed lower dies 19 are provided in the secondary forming area.
  • FIG. 6 shows a detail of FIG. 5 enlarged.
  • the Futtonuns poison 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 guide insert 16 and the spring base 17.
  • the upper die 12, as well as the lower die 19, can also be clearly seen.
  • the secondary structure is introduced into the troughs of the primary structure of the metal foil 4.
  • the upper embossing punch 12 the secondary structure is introduced into the wave crests of the metal foil 4.
  • the secondary structure also has this Waveform, but in higher frequency and smaller amplitude than the primary structure.
  • the upper tool part 6 of the follow-on composite tool 1 is in its uppermost position.
  • the Pressenbär now presses on the top plate 10, whereby a downward movement of the upper tool part 6 takes place.
  • the guide plate 15 and thus the guide insert 16 are spring-supported by the springs 14 more than the spring base 17 with its springs 18.
  • the guide insert 16 is pressed from above against the metal foil 4.
  • After a further downward movement pushes the metal foil 4 with the guide insert 16 on the spring base 17.
  • the metal foil is now fixed in the secondary shaping area 2 and thus centered. Since the guide plate 15 and thus the guide insert 16 are more sprung than the spring base 17, the downward movement is continued.
  • the metal foil 4 is pressed against the lower, rigid dies 19 for the secondary structure. As a result, the secondary structure is introduced into the troughs of the primary structure.
  • the drives 29, 28 of the toggle mechanisms 23, 22 are actuated.
  • the embossing punch 21 is moved to introduce the primary structure in the direction of metal foil.
  • the punch 21 presses the metal foil against the guide insert 16, whereby a part of the primary structure is introduced into the metal foil.
  • the drive of the toggle lever 22 is actuated via the spring-loaded pin 30.
  • the punch 20 moves against the metal foil 4 and against the guide insert 16. Due to the chronological sequence of the stamping operations, a subsequent flow of metal foil material is made possible. Tearing of the film is avoided with advantage.
  • the secondary structure in the secondary Forming area introduced by downward movement of the rigid upper punch 12 in the peaks of the primary structure.
  • the design of the surface of the upper and the lower die are shown in FIG.
  • the time can be determined, in which material is punched out of the smooth film 4.
  • this is done after the primary structure is introduced and before the second part of the secondary structure is introduced into the metal foil.
  • the upper tool part 6 is at its lowest position. This is shown in FIG.
  • the spring base is completely depressed downwards against the force of the springs 18.
  • the lower dies 19 for introducing the secondary structure are located relative to the metal foil 4 in their highest position.
  • Stamper 12 is located at its lowest position, as well as the guide insert 16. In Figure 7, three punches 21, 20, 36 are shown, which serve to introduce the primary structure.
  • each of these stamp a separate drive, for example in the form of a toggle mechanism provided.
  • the punching area 37 is provided with cutting punches 38.
  • the cutting punches 38 are anchored in the punch holding plate 11. By selecting the length of the cutting punch the time can be selected in which material is punched out of the metal foil 4 by downward movement of the upper tool part.
  • Figure 8 the detail X of Figure 7 is shown enlarged. Here engage guide insert 16 and spring base 17 into each other. Between these, the metal foil 4 is clamped. Clearly visible is the secondary embossing of the metal foil. This consists of small wave crests, which are introduced into troughs of the primary structure and small troughs, which are incorporated into the wave crests of the primary structure.
  • the metal foil 4 is shown after passing through the secondary shaping area 2.
  • the punched outs were not shown. It can be clearly seen that the secondary structure 39 was introduced into the wave crests 40 of the primary structure 41 by means of the upper stamping die.
  • the lower embossing dies 19 introduced the secondary structure 39 in the form of small wave crests into the wave troughs 42 of the primary structure 41.
  • FIG. 2 shows a metal foil 4 produced by means of the method according to the invention and by means of the device according to the invention.
  • the primary structure 41 is a wave of 2.5 millimeters in length and 1.6 millimeters in height.
  • the wavy secondary structure 39 has a length of 1 millimeter and a height of about 0.5 millimeters.
  • Figure 3 shows a cross section through a corrugated metal foil 4, wherein the sectional plane is located in the II shown in Figure 2.
  • FIG. 1 A possible procedure is shown in FIG. First, the metal foil to be processed is transported into the progressive die 43. Thereafter, the metal foil is locked 44. Then, the primary structure 45 and the secondary structure is impressed 46. Now, the progressive compound tool has reached a low point of its vertical movement. The tool has not yet completely collapsed, but further material is no longer deformed. The following step 47 then performs the punching for the area between primary and secondary structure. Then the tool is articulated at its lowest point. The wavy metal strip produced by this method is then conveyed by a further material feed 43 from the progressive tool 1 and fed to further processing. In the described processing operation at least one complete, depending on the nature of the material and two or more complete structural units are introduced into the metal foil.
  • the metal foil is clamped in a second working step between a follow-on composite top and a follow-on composite lower part in the secondary shaping area 44.
  • the secondary structure is introduced into certain troughs of the primary structure within the secondary forming area 46.
  • the primary structure by means of at least one punch in the metal foil introduced 45, whereby foil material is drawn in the feed direction, before, during or subsequently punched out in the punching area metal foil material by cutting punch 47 and introduced in the same or subsequent or previously stored step, the secondary structure in certain peaks of the primary structure 46.
  • the secondary structure can also take place at the same time, before or after punching out the metal foil material.
  • FIG. 10 schematically shows a follow-on composite tool 1, wherein the follow-on composite tool 1 is actuated with a movable bear 49 driven via an eccentric disk 48.
  • the tool 1 includes a plurality of punches 20, 21, 36, 12, 19 for introducing the primary and the secondary structure in the metal foil 4.
  • the temporal sequence of the process steps can be controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Forging (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (23)

  1. Outil à suivre composé, pour la fabrication d'une feuille métallique structurée comprenant au moins deux structures, l'une des structures recouvrant au moins partiellement l'autre structure, l'outil à suivre composé étant constitué d'une partie supérieure d'outil et une partie inférieure d'outil et présentant au moins trois zones de travail (2, 5, 37), en particulier séparées dans l'espace, à savoir une zone d'estampage (37), pour l'enlèvement du matériau de feuille en certaines positions de la feuille métallique (4), une zone de façonnage (5) primaire pour l'introduction de la structure primaire (41) de préférence ondulée, dans la feuille métallique (4) et une zone de façonnage (2) secondaire pour l'introduction de la structure secondaire (46), de préférence ondulée, dans la feuille métallique (4), de préférence dans la structure primaire (41) de la feuille métallique (4).
  2. Outil à suivre composé selon la revendication 1,
    caractérisé en ce que la zone d'estampage (37) est disposée dans le sens d'alimentation (3) de la feuille métallique (4) devant les zones de façonnage (2, 5) primaire et secondaire.
  3. Outil à suivre composé, selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu en supplément d'autres zones de travail pour la fabrication d'autres structures dans la feuille métallique.
  4. Outil à suivre composé, selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu au moins en supplément d'autres zones de travail pour l'introduction de zones de transition entre deux structures ou plus.
  5. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu dans la zone de façonnage (5) secondaire des poinçons d'estampage (12, 19) pour l'introduction de la structure secondaire, et des moyens (16, 17) pour le centrage de la feuille métallique (4).
  6. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens (16, 17) pour le centrage de la feuille métallique (4) sont réalisés sous la forme de moyens de serrage montés sur ressort, comprenant une plaque de guidage (15) montée sur ressort avec insert de guidage (16) et un fond de ressort (17), les surfaces de l'insert de guidage (16) et/ou du fond de matrice (17) étant formées au moins partiellement comme la structure primaire de la feuille métallique.
  7. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu dans la zone de façonnage (5) primaire au moins un poinçon (20, 21), coopérant avec un insert de guidage (16) monté sur ressort, pour l'introduction de la structure primaire (41) dans la feuille métallique (4).
  8. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'insert de guidage (6) monté sur ressort de la zone de façonnage (2) secondaire se poursuit dans la zone de façonnage (5) primaire.
  9. Outil à suivre composé selon la revendication 4,
    caractérisé en ce que la surface du poinçon (20, 21) et celle de l'insert de guidage (16) monté sur ressort sont conçues de telle sorte que la structure primaire (41) de la feuille métallique donne la forme d'une onde, de préférence continue.
  10. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs, de préférence au moins deux, poinçons (20, 21) sont disposés dans l'espace les uns derrière les autres dans le sens d'alimentation (3) de la feuille métallique et peuvent être actionnés de façon successive, en particulier dans le sens contraire au sens d'alimentation (3) de la feuille métallique (4).
  11. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que à chaque poinçon (20, 21) ou à un groupe de poinçons voisins est attribué un mécanisme à levier coudé (22, 23), par lequel le poinçon (20, 21) ou le groupe de poinçons peut être actionné.
  12. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque mécanisme à levier coudé (22, 23) se compose d'une partie centrale (24), qui est reliée de façon articulée par au moins deux leviers coudés (25) au poinçon (20) et par au moins deux autres leviers coudés (26) à une plaque de base (27), la partie centrale (24) étant disposée avec les leviers coudés (21, 26) de telle sorte que le poinçon (20) peut être actionné par un déplacement latéral de la partie centrale (24).
  13. Outil à suivre composé selon l'une quelconque des revendications précédentes, caractérisé en ce que à chaque mécanisme à levier coudé (22, 23) ou à chaque groupe de mécanismes à levier coudé est attribué un entraînement (28, 29) pour la transformation d'un mouvement vertical de la partie supérieure d'outil (6) ou de la partie inférieure d'outil (5) en un déplacement latéral de la partie centrale (24) du mécanisme à levier coudé (22, 23).
  14. Outil à suivre composé selon la revendication 9,
    caractérisé en ce que à chaque entraînement (28, 29) est attribué un boulon (30, 35), de préférence monté sur ressort, en liaison active avec la partie supérieure d'outil (6) ou la partie inférieure d'outil (7), les boulons (30, 25) des entraînements (28, 29) individuels présentant une longueur différente, de sorte que les entraînements des mécanismes à levier coudé (22, 23) individuels ou des groupes de mécanismes à levier coudé sont réciproquement adaptés de telle sorte que les poinçons (20, 21) sont actionnés les uns après les autres dans le temps, le poinçon (21) situé de plus près de la zone de façonnage (2) secondaire étant actionné de préférence en premier et les autres poinçons (20) étant actionnés ensuite dans l'ordre de succession dans le sens contraire au sens d'alimentation (3) de la feuille métallique (4).
  15. Procédé pour la fabrication d'une feuille métallique structurée, en particulier comme corps support de catalyseur, caractérisé en ce qu'une feuille métallique (4) est dotée dans un outil à suivre composé (1) dans une opération d'usinage d'une couche primaire et d'au moins une couche secondaire (45, 46), la structure secondaire recouvrant la structure primaire, et dans lequel du matériau de feuille métallique est enlevé (47) dans toutes les zones de transition ou dans des zones de transition sélectionnées entre la première et au moins la seconde structure.
  16. Procédé selon la revendication 15, caractérisé en ce que les étapes de travail de l'opération d'usinage s'effectuent avec un décalage dans le temps ou des étapes de travail individuelles de l'opération d'usinage s'effectuent avec un décalage dans le temps et dans l'espace.
  17. Procédé selon la revendication 15 ou 16, caractérisé en ce que l'outil à suivre composé introduit la structure primaire et la structure secondaire de préférence comme structure ondulée dans la feuille métallique.
  18. Procédé selon la revendication 15, 16 ou 17,
    caractérisé en ce que la structure secondaire est introduite dans les crêtes d'onde et/ou dans les creux d'onde de la structure primaire (41) et les ondes de la structure (46) secondaire présentant de préférence une fréquence plus élevée et une amplitude plus faible que les ondes de la première structure.
  19. Procédé selon l'une quelconque des revendications de procédé précédentes, caractérisé en ce que du matériau de feuille est enlevé par découpage à la matrice, de préférence dans une forme de trou oblong, dans la zone de transition entre la première et la seconde structures.
  20. Procédé selon l'une quelconque des revendications de procédé précédentes, caractérisé en ce que une feuille métallique avec une épaisseur de 0,02 à 0,12 mm, de préférence avec une épaisseur de 0,05 mm, et avec une largeur de feuille de 50 à 210 mm est traitée.
  21. Procédé selon l'une quelconque des revendications de procédé précédentes, caractérisé en ce que la feuille métallique est guidée à travers au moins un dispositif d'alimentation par l'outil à suivre composé (1).
  22. Procédé selon l'une quelconque des revendications de procédé précédentes, caractérisé en ce qu'une, de préférence deux structures ondulées sont introduites dans la feuille métallique lors d'une opération d'usinage.
  23. Procédé selon l'une quelconque des revendications de procédé précédentes, caractérisé en ce que la feuille métallique est coincée dans une première étape partielle de travail entre la partie supérieure d'outil à suivre composé (6) et la partie inférieure d'outil à suivre composé (7) dans la zone de façonnage (2) secondaire,
    et en ce qu'ensuite la structure secondaire (39) est introduite dans certains creux d'onde (42) de la structure primaire (41) à l'intérieur de la zone de façonnage (2) secondaire,
    après quoi la structure primaire (41) est introduite au moyen d'au moins un poinçon (20, 21) dans la feuille métallique (4), de sorte que du matériau de feuille (4) est ré-étiré dans le sens d'alimentation (3), du matériau de feuille métallique (4) est découpé par un poinçon de coupe (38) avant, pendant ou après dans la zone d'estampage (37) et la structure secondaire (39) est introduite dans certaines crêtes d'onde (40) de la structure primaire (41) lors de la même étape partielle de travail ou bien de l'étape partielle de travail située après ou avant.
EP03015765A 2003-03-12 2003-07-10 Outil à suivre pour presse d'emboutissage Expired - Lifetime EP1457275B1 (fr)

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DE10311174 2003-03-12
DE10311174A DE10311174A1 (de) 2003-03-12 2003-03-12 Verfahren zur Herstellung einer strukturierten Metallfolie

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Publication number Priority date Publication date Assignee Title
DK1793947T3 (da) * 2004-09-09 2009-04-14 Unimet Gmbh Sammensat fölgesnit til fremstilling af strukturerede folier
DE102004045106A1 (de) 2004-09-17 2006-03-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Metallfolie mit unterschiedlichen Einbuchtungen
GB2441983A (en) * 2006-07-14 2008-03-26 Aea Technology Plc Catalytic structures for use in catalytic reactors
DE102008057019A1 (de) 2008-11-12 2010-05-20 Reinhard Schmid Umformwerkzeug zur Bearbeitung von Werkstücken
DE102010000551A1 (de) * 2010-02-25 2011-08-25 Unimet GmbH, 87669 Stanz- und Biegeverfahren
CN103537539B (zh) * 2013-10-18 2015-12-09 中国科学院深圳先进技术研究院 波纹箔片的冲压成形装置及波纹箔片的生产设备
PL3967512T3 (pl) 2020-09-14 2024-04-29 Gerhard Rauch Ges.m.b.H. Urządzenie do wytłaczania folii
CN113751586B (zh) * 2021-09-26 2024-04-23 广东恒力精密工业有限公司 双珠弹片一次成型自动生产线
CN115446175A (zh) * 2022-08-26 2022-12-09 楚能新能源股份有限公司 一种激光焊金属片抗反制造装置

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US3009510A (en) * 1958-04-25 1961-11-21 Rca Corp Apparatus and method for corrugating sheet metal strip
SU1022765A1 (ru) * 1980-12-10 1983-06-15 Предприятие П/Я А-1697 Устройство дл изготовлени ленты с гофрами,расположенными в шахматном пор дке
JPS59220220A (ja) * 1983-05-30 1984-12-11 Hitachi Ltd 波山連続成形装置
SE454654B (sv) * 1986-09-24 1988-05-24 Nordisk Kartro Ab Sett och anordning for positionering av verktyg i forhallande till en materialbana med upprepad grundform
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IT1299680B1 (it) * 1998-06-18 2000-03-24 Sovema Srl Macchina formatrice per nastri metallici, in particolare per la realizzazione di piastre per accumulatori elettrici
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DE50304208D1 (de) 2006-08-24
ATE332770T1 (de) 2006-08-15
DE10311174A1 (de) 2004-09-23

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