EP0956912B1 - Dispositif pour produire des tôles structurées - Google Patents

Dispositif pour produire des tôles structurées Download PDF

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Publication number
EP0956912B1
EP0956912B1 EP99109493A EP99109493A EP0956912B1 EP 0956912 B1 EP0956912 B1 EP 0956912B1 EP 99109493 A EP99109493 A EP 99109493A EP 99109493 A EP99109493 A EP 99109493A EP 0956912 B1 EP0956912 B1 EP 0956912B1
Authority
EP
European Patent Office
Prior art keywords
sheet
tool according
frame
tool
bodies
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
EP99109493A
Other languages
German (de)
English (en)
Other versions
EP0956912A1 (fr
Inventor
Alvaro Dr. Casajus
Hans-Jörg Dr. Hartmann
Matthias Prof. Dr. Kleiner
Bernd Schmolke
Jörg Dr. Rauer
Klaus Wenzel
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.)
ArcelorMittal Eisenhuettenstadt GmbH
Original Assignee
Eko Stahl 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 Eko Stahl GmbH filed Critical Eko Stahl GmbH
Publication of EP0956912A1 publication Critical patent/EP0956912A1/fr
Application granted granted Critical
Publication of EP0956912B1 publication Critical patent/EP0956912B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21D49/00—Sheathing or stiffening objects
    • 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
    • B21D13/10—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/04—Stamping using rigid devices or tools for dimpling

Definitions

  • the invention relates to a tool for producing structured thin sheets with improved dimensional stability.
  • structured sheets are used in many areas of technology in order to meet the requirements of the respective area of use with regard to its dimensional stability.
  • Components of this type are produced using suitable devices or tools in continuous or discontinuous operation.
  • a tool according to the preamble of claim 1 known that consists of a dimensionally stable plate and individual circular drawing parts fastened thereon.
  • a perforating tool with circular passages is assigned to this support plate with the drawn parts firmly connected to it, between which the deformation of the board takes place to form a support plate with dome-shaped projections.
  • this tool is not very flexible when changing the structure of the support profile.
  • Simple, area-like components such as facade elements, heat exchangers or the like. are preferably made from strip-shaped primary material.
  • Complicated components such as those used in the automotive industry for the manufacture of vehicle bodies, are manufactured using correspondingly complex shaping tools. Such tools are very expensive.
  • a device for producing arch-structured material webs, in which the strip-shaped primary material is structured using a structured roller and a roller body coated with an elastomer.
  • the recycling of such structured material is only advantageous for selected areas of application.
  • additional measures are required to prepare the sheet metal parts to be connected in the joining area.
  • the use of laser welding systems to connect such structured material requires a particularly careful preparation of the parts to be connected due to the necessary small tolerances in the weld area.
  • the object of the invention is to find a tool for structuring thin metal sheets, with which the production of three-dimensional flat metal sheets with improved dimensional stability in straightening quality is possible and which is characterized by a high flexibility with regard to the structure to be produced and the size of the surface to be structured.
  • the tool according to the invention consists of a dimensionally stable, flat plate 1, on which individual geometrical bodies 2 of the same type are arranged in an ordered form.
  • the geometric bodies 2 are steel balls of the same size, 4 rollers, rollers, truncated pyramids or truncated cones being usable depending on the desired structure of a sheet.
  • Their number is dimensioned such that they fix themselves in their position on the plate 1 within a frame 3.
  • the frame 3 can be adjusted to the side length resulting from the respective number and size of the bodies 2.
  • strips 8 are preferably arranged on the inner sides of the frame 3, which serve to support the fixation of the body 2 on the plate 1 and to improve the structure formation in the transition region from the flat sheet metal to the structured sheet metal and are designed accordingly .
  • the strips 8 are expediently attached to the frame 3 such that they can be displaced in the vertical direction with the movement of the plate 1 supported on a die cushion 10 in the direction of the sheet 4 to be structured.
  • the geometrical bodies 2 used in their entirety result in the negative shape for a sheet 4 to be structured.
  • the size and shape of the individual bodies 2 are determined on the basis of the structure to be achieved in the sheet metal 4.
  • a structured sheet 4 produced by means of the steel balls is shown in FIG. 3.
  • the dimensional stability of a sheet 4 can be improved by introducing further structural elements into the sheet 4.
  • a further layer of smaller balls is embedded in a first shape formed by balls.
  • the shape obtained in this way consisting of two layers of bodies 2, forms the negative shape.
  • the position of the smaller balls on the plate 1 due to the arrangement of the layer of larger balls results from the depression formed by three or four adjacent larger ball bodies.
  • the diameter of the small balls is dimensioned such that their upper vertex lies in one plane with the upper vertex of the larger balls.
  • This configuration of a negative shape ensures that the axes of symmetry resulting from the symmetrical arrangement of the structuring bodies 2 are also structured, whereby a further improvement in the rigidity of the sheet 4 is achieved.
  • the plate 1 is designed with its outer dimensions so that it is movable in the frame 3 in the vertical direction.
  • the frame 3 is attached to a press table 7.
  • the negative form is assigned means for pressurizing, which can be designed differently.
  • a stamp 6 coated with an elastomer 5 is used to structure the sheet 4.
  • the layer thickness and the elasticity of the elastomer 5 used is determined by the sheet thickness and the structuring to be achieved.
  • the sheet 4 is supported on the frame 3 and is firmly clamped to the frame 3 by the punch 6 during the structuring process.
  • the vertical movement of the die cushion 10 with the plate 1 presses the negative form formed by the individual geometric bodies 2 together with the strips 8 which may be used against the plate 4, the predetermined structuring of the plate 4 taking place.
  • the structuring is carried out by pressurizing the sheet 4 in a first stage by means of a gaseous or liquid active medium, which is pressed via appropriate feeds 9 into the space between the punch 6 with the elastomer layer 5 and sheet 4 and initially to a uniform one Expansion of the sheet 4 to be structured leads.
  • the subsequent formation of the structure of the sheet 4 then takes place, as in the previous example, using the stamp 6 coated with an elastomer 5.
  • This configuration of the pressurization enables the desired structure to be better characterized.
  • FIG. 7 Another possibility of pressurization is shown in FIG. 7.
  • the structuring takes place by means of a negative shape and a positive shape configured accordingly, the positive shape being built up from the same geometric bodies 2.
  • the geometric bodies 2 used are held in their horizontal position by appropriate means.
  • This configuration of the pressure medium application can preferably be used for structuring higher sheet thicknesses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (9)

  1. Outil pour la fabrication de tôles minces structurées avec une stabilité de forme améliorée, composé d'une plaque plane (1) de forme stable sur laquelle sont disposés des corps géométriques individuels de même nature (2) sous une forme ordonnée à l'intérieur d'un cadre (3), qui forment par leur ensemble la forme négative pour une tôle à déformer (4), caractérisé en ce que le nombre des corps géométriques (2) dans le cadre (3) est calculé de telle manière que ceux-ci se placent eux-mêmes dans une position fixe sur la plaque (1) et soient mobiles en direction verticale à l'intérieur du cadre (3) et en ce que des moyens d'application d'une pression sont associés à cette forme négative ainsi formée.
  2. Outil suivant la revendication 1, caractérisé en ce que l'on utilise comme corps géométriques (2) des billes, des galets, des cylindres, des troncs de pyramide ou des troncs de cône.
  3. Outil suivant la revendication 1 et 2, caractérisé en ce que le cadre (3) est réglable en fonction de la taille de la surface à structurer.
  4. Outil suivant les revendications 1 à 3, caractérisé en ce que l'application de la pression sur la tôle à déformer (4) se fait par un poinçon (6) revêtu d'un élastomère (5).
  5. Outil suivant les revendications 1 à 4, caractérisé en ce que l'application de la pression sur la tôle à déformer (4) se fait par un fluide gazeux ou liquide.
  6. Outil suivant les revendications 1 à 5, caractérisé en ce que l'application de la pression sur la tôle à déformer (4) se fait par une combinaison des caractéristiques des revendications 4 et 5.
  7. Outil suivant les revendications 1 à 6, caractérisé en ce que l'application de la pression sur la tôle à déformer (4) se fait par une forme positive fixée à un poinçon (6).
  8. Outil suivant les revendications 1 à 7, caractérisé en ce que les corps géométriques (2) disposés dans la forme positive sont fixés de façon autocentrante.
  9. Outil suivant la revendication 1 à 3, caractérisé en ce que des barrettes (8) de préférence interchangeables sont fixées sur les faces intérieures du cadre (3).
EP99109493A 1998-05-14 1999-05-12 Dispositif pour produire des tôles structurées Expired - Lifetime EP0956912B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19821482A DE19821482A1 (de) 1998-05-14 1998-05-14 Werkzeug zur Herstellung strukturierter dünner Bleche
DE19821482 1998-05-14

Publications (2)

Publication Number Publication Date
EP0956912A1 EP0956912A1 (fr) 1999-11-17
EP0956912B1 true EP0956912B1 (fr) 2002-02-27

Family

ID=7867672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109493A Expired - Lifetime EP0956912B1 (fr) 1998-05-14 1999-05-12 Dispositif pour produire des tôles structurées

Country Status (2)

Country Link
EP (1) EP0956912B1 (fr)
DE (2) DE19821482A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215912C1 (de) * 2002-04-11 2003-06-12 Daimler Chrysler Ag Verfahren und Prägewerkzeug zur Herstellung eines Karosserie-Bauteils aus einem wölbstrukturierten Blech
DE102009026190A1 (de) 2009-07-16 2011-01-27 Fachhochschule Lausitz Vorrichtung zum Prägen variabler Oberflächenstrukturen in ebene Flächengebilden mit Hilfe walzenförmiger Prägestempel
CN111001698B (zh) * 2019-10-22 2021-02-05 广东伟业铝厂集团有限公司 一种用于型材的窝点成型装置
CN112935040B (zh) * 2021-01-28 2023-05-16 佛山科学技术学院 复合微纳透镜阵列成型加工机构、模芯及热压装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638474A (en) * 1969-08-13 1972-02-01 Hedley G Hannaford Construction of punch dies
GB2050904A (en) * 1979-06-20 1981-01-14 Tate Architectural Products Rigid stiffening web for load- bearing panel
DE3943146C2 (de) * 1989-12-28 1996-04-11 Rabe Juergen Spritz-, Stanz- oder Ziehwerkzeug mit austauschbaren Formwerkzeugen

Also Published As

Publication number Publication date
DE59900891D1 (de) 2002-04-04
DE19821482A1 (de) 1999-11-18
EP0956912A1 (fr) 1999-11-17

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