EP0956912A1 - Tool for manufacturing structured metal sheets - Google Patents

Tool for manufacturing structured metal sheets Download PDF

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Publication number
EP0956912A1
EP0956912A1 EP99109493A EP99109493A EP0956912A1 EP 0956912 A1 EP0956912 A1 EP 0956912A1 EP 99109493 A EP99109493 A EP 99109493A EP 99109493 A EP99109493 A EP 99109493A EP 0956912 A1 EP0956912 A1 EP 0956912A1
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EP
European Patent Office
Prior art keywords
tool according
sheet
frame
pressurization
structured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99109493A
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German (de)
French (fr)
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EP0956912B1 (en
Inventor
Alvaro Dr. Casajus
Hans-Jörg Dr. Hartmann
Matthias Prof. Dr. Kleiner
Bernd Schmolke
Jörg Dr. Rauer
Klaus Wenzel
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ArcelorMittal Eisenhuettenstadt GmbH
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Eko Stahl GmbH
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Publication of EP0956912A1 publication Critical patent/EP0956912A1/en
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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
    • 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 stiffness.
  • 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.
  • 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.
  • Another disadvantage is that, due to the process, the sheet is bent over a roller during the structuring process and this curvature has to be eliminated by a subsequent straightening unit in order to obtain a flat sheet that conforms to quality. As a result of this subsequent bending back, part of the stiffness of the structured sheet is lost again.
  • the flexibility with regard to the production of different widths is regularly associated with the use of a different structure roller, which is cost-intensive to buy and which requires an adequate stock in accordance with the number of structures and dimensions required.
  • the object of the invention is to provide a tool for structuring thin sheets find with which the production of three-dimensional flat sheets with improved Dimensional rigidity in straightening quality is possible and this is due to a high degree of flexibility with regard to the structure to be created and the size of the structure to be structured Area.
  • the production is more structured Sheets with improved stiffness and flatness possible because of a subsequent straightening of the sheets produced with this tool is not necessary is. Furthermore, there are no additional measures to prepare the Sheet metal edges required to connect structured sheets, as the joining area of a sheet is excluded from the deformation.
  • By using it of individual geometrical bodies is a high flexibility regarding the given structure and the area to be structured given that the structuring surface of a sheet or a component to be structured Sheet metal in a simple way by choosing the number, size and shape of the used geometric body as well as the frame with plate can be varied.
  • 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 or other comparable bodies 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 in the transition area 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.

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

Abstract

Tool consists of a form-stable flat plate (1) with individual geometrical bodies (2), such as rollers or balls, of the same or different sizes fastened to it within a frame (3). The bodies define the negative mold for a metal sheet to be formed, and the mold has an associated element to apply a pressure. Frame is adjustable dependent upon the size of the surface to be structured. The balls within the frame lock themselves into position and are freely moveable in vertical direction. Pressure is applied by a stamp (6) with elastomer coating (5), or by a gaseous or liquid movement.

Description

Die Erfindung betrifft ein Werkzeug zur Herstellung strukturierter dünner Bleche mit verbesserter Formsteifigkeit.The invention relates to a tool for producing structured thin sheets with improved stiffness.

Zur Verminderung des Gewichtes und zur Reduzierung des Materialeinsatzes werden in vielen Bereichen der Technik strukturierte Bleche eingesetzt, um den Anforderungen des jeweiligen Einsatzgebietes bezüglich seiner Formsteifigkeit zu entsprechen.
Die Herstellung derartiger Bauteile erfolgt dabei durch geeignete Vorrichtungen bzw. Werkzeuge im kontinuierlichen oder diskontinuierlichen Betrieb. Insbesondere einfache, flächenartig ausgebildete Bauteile, wie z.B. Fassadenelemente, Wärmetauscher odgl. werden dabei vorzugsweise aus bandförmigen Vormaterial gefertigt. Komplizierte Bauteile, wie sie z.B. in der Automobilindustrie bei der Fertigung von Fahrzeugkarosserien zum Einsatz kommen werden dabei unter Verwendung entsprechend aufwendiger Formgebungswerkzeuge hergestellt. Derartige Werkzeuge sind sehr kostenintensiv.To reduce the weight and to reduce the use of materials, 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. In particular, 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.

Zur Herstellung von wölbstrukturierten Materielbahnen ist gemäß DE 44 37 986 eine Vorrichtung bekannt, bei der bandförmiges Vormaterial unter Verwendung einer strukturierten Walze und eines mit einem Elastomer beschichteten Walzenkörpers strukturiert wird. Die Verwertung eines solchen strukturierten Materials ist jedoch nur für ausgewählte Einsatzgebiete vorteilhaft. Für die Fertigung von Bauteilen bei denen die strukturierten Seiten durch Schweißen oder ein ähnliches Fügeverfahren miteinander verbunden werden müssen, sind zusätzliche Maßnahmen zur Vorbereitung der miteinander zu verbindenden Blechteile im Fügebereich notwendig. Der Einsatz von Laserschweißanlagen zum Verbinden derartig strukturierten Vormaterials erfordert auf Grund der notwendigen geringen Toleranzen im Schweißnahtbereich eine besonders sorgfältige Vorbereitung der miteinander zu verbindenden Teile.
Ein weiterer Nachteil besteht darin, daß verfahrensbedingt während des Strukturierungsvorganges das Blech über eine Walze gekrümmt wird und diese Krümmung durch eine nachgeordnete Richteinheit beseitigt werden muß, uni ein qualitätsgerechtes ebenes Blech zu erhalten. Durch diese nachträgliche Rückbiegung geht ein Teil der Steifigkeit des strukturierten Bleches wieder verloren.
Die Flexibilität bezüglich der Herstellung unterschiedlicher Breiten ist regelmäßig mit einem Einsatz einer anderen Strukturwalze verbunden, die in ihrer Anschaffung kostenintensiv ist und entsprechend der Anzahl der benötigten Strukturen und Abmessungen einen ausreichenden Lagerbestand erfordert.According to DE 44 37 986, a device is known 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. However, the recycling of such structured material is only advantageous for selected areas of application. For the production of components in which the structured sides have to be connected to one another by welding or a similar joining process, 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.
Another disadvantage is that, due to the process, the sheet is bent over a roller during the structuring process and this curvature has to be eliminated by a subsequent straightening unit in order to obtain a flat sheet that conforms to quality. As a result of this subsequent bending back, part of the stiffness of the structured sheet is lost again.
The flexibility with regard to the production of different widths is regularly associated with the use of a different structure roller, which is cost-intensive to buy and which requires an adequate stock in accordance with the number of structures and dimensions required.

Aufgabe der Erfindung ist es, ein Werkzeug zur Strukturierung dünner Bleche zu finden, mit dem die Herstellung dreidimensionaler ebener Bleche mit verbesserter Formsteifigkeit in Richtqualität möglich ist und das sich durch eine hohe Flexibilität bezüglich der zu erzeugenden Struktur und der Größe der zu strukturierenden Fläche auszeichnet.The object of the invention is to provide a tool for structuring thin sheets find with which the production of three-dimensional flat sheets with improved Dimensional rigidity in straightening quality is possible and this is due to a high degree of flexibility with regard to the structure to be created and the size of the structure to be structured Area.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.According to the invention the object is achieved by the features of claim 1. Advantageous refinements result from the subclaims.

Mit der Anwendung des erfindungsgemäßen Werkzeuges ist die Herstellung strukturierter Bleche mit einer verbesserten Formsteifigkeit und Ebenheit möglich, da ein nachfolgendes Richten der mit diesem Werkzeug hergestellten Bleche nicht erforderlich ist. Weiterhin sind keine zusätzlichen Maßnahmen zur Vorbereitung der Blechkanten zum Verbinden von strukturierten Blechen erforderlich, da der Fügebereich eines Bleches von der Verformung ausgenommen ist. Durch die Verwendung von einzelnen geometrischen Körpern ist eine hohe Flexibilität bezüglich der herzustellenden Struktur und der zu strukturierenden Fläche gegeben, da die zu strukturierende Fläche eines Bleches oder eines zu strukturierenden Bauteiles aus Blech auf einfache Weise durch die Wahl der Anzahl, Größe und Form der eingesetzten geometrischen Körper sowie des Rahmens mit Platte variiert werden kann.With the use of the tool according to the invention, the production is more structured Sheets with improved stiffness and flatness possible because of a subsequent straightening of the sheets produced with this tool is not necessary is. Furthermore, there are no additional measures to prepare the Sheet metal edges required to connect structured sheets, as the joining area of a sheet is excluded from the deformation. By using it of individual geometrical bodies is a high flexibility regarding the given structure and the area to be structured given that the structuring surface of a sheet or a component to be structured Sheet metal in a simple way by choosing the number, size and shape of the used geometric body as well as the frame with plate can be varied.

Das erfindungsgemäße Werkzeug soll nachfolgend an drei Ausführungsbeispielen näher erläutert werden. In den dazugehörenden Zeichnungen zeigen:

Fig. 1 :
Draufsicht der Negativform
Fig. 2 :
Seitenansicht der Negativform
Fig. 3 :
Ansicht eines strukturierten Bleches
Fig. 4a :
Draufsicht der Negativform mit Leisten und einer eingelagerten 2. Kugelschicht
Fig. 4b :
Seitenansicht der Negativform mit einer eingelagerten 2. Kugelschicht
Fig. 5 :
Seitenansicht des Werkzeuges mit Druckbeaufschlagung durch eine Elastomerschicht
Fig. 6 :
Seitenansicht des Werkzeuges mit Druckbeaufschlagung durch eine Elastomerschicht und ein gasförmiges oder flüssiges Medium
Fig. 7 :
Seitenansicht des Werkzeuges mit Druckbeaufschlagung durch eine Positivform
The tool according to the invention will be explained in more detail below using three exemplary embodiments. In the accompanying drawings:
Fig. 1:
Top view of the negative form
Fig. 2:
Side view of the negative form
Fig. 3:
View of a structured sheet
Fig. 4a:
Top view of the negative mold with strips and an embedded 2nd spherical layer
Fig. 4b:
Side view of the negative form with an embedded 2nd spherical layer
Fig. 5:
Side view of the tool pressurized by an elastomer layer
Fig. 6:
Side view of the tool with pressurization through an elastomer layer and a gaseous or liquid medium
Fig. 7:
Side view of the tool pressurized by a positive mold

Das erfindungsgemäße Werkzeug besteht aus einer formstabilen ebenen Platte 1, auf der in geordneter Form einzelne gleichartige geometrische Körper 2 angeordnet sind. Die geometrischen Körper 2 sind gemäß Fig. 1 Stahlkugeln gleicher Größe, wobei in Abhängigkeit von der angestrebten Struktur eines Bleches 4 Rollen, Walzen oder andere vergleichbare Körper verwendbar sind. Ihre Anzahl ist so bemessen, daß sie sich innerhalb eines Rahmens 3 in ihrer Lage aufder Platte 1 selbst fixieren. Dazu ist der Rahmen 3 auf die sich aus der jeweiligen Anzahl und Größe der Körper 2 sich ergebende Seitenlänge einstellbar.
An den Innenseiten des Rahmens 3 sind in Abhängigkeit von der Größe der verwendeten Körper 2 vorzugsweise Leisten 8 angeordnet, die zur Unterstützung der Fixierung der Körper 2 auf der Platte 1 sowie Verbesserung der Strukturausbildung im Übergangsbereich vom ebenen Blech zum stukturierten Blech dienen und entsprechend ausgebildet sind. Die Leisten 8 sind dabei zweckmäßigerweise so am Rahmen 3 befestigt, daß diese in vertikaler Richtung mit der Bewegung der auf einem Ziehkissen 10 lagernden Platte 1 in Richtung des zu struktuierenden Bleches 4 verschiebbar sind.
Die verwendeten geometrischen Körper 2 ergeben in ihrer Gesamtheit die Negativform für ein zu strukturierendes Blech 4.
Ausgehend von der zu erzielenden Struktur im Blech 4 wird die Größe und die Form der einzelnen Körper 2 festgelegt. Eine mittels der Stahlkugeln hergestelltes strukturiertes Blech 4 ist in Fig. 3 dargestellt.
Die Formsteifigkeit eines Bleches 4 kann durch das Einbringen weiterer Strukturelemente in das Blech 4 verbessert werden. Dazu ist in eine durch Kugeln gebildeten ersten Form eine weitere Schicht kleinerer Kugeln eingelagert. Die so erhaltene, aus zwei Schichten von Körpern 2 bestehende Form bildet die Negativform. 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. 1, the geometric bodies 2 are steel balls of the same size, 4 rollers, rollers or other comparable bodies 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. For this purpose, the frame 3 can be adjusted to the side length resulting from the respective number and size of the bodies 2.
Depending on the size of the body 2 used, 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 in the transition area 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. For this purpose, 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.

Die Lage der kleineren Kugeln auf der durch der Anordnung der Schicht größerer Kugeln auf der Platte 1 ergibt sich aus den durch drei bzw. vier benachbarte größere Kugelkörper gebildeten Vertiefung.
Der Durchmesser der kleinen Kugeln ist dabei so bemessen, daß ihr oberer Scheitelpunkt mit dem oberen Scheitelpunkt der größeren Kugeln in einer Ebene liegt. Durch diese Ausgestaltung einer Negativform wird erreicht, daß die durch die symmetrische Anordnung der Strukturierungskörper 2 entstehenden Symmetrieachsen ebenfalls strukturiert werden, wodurch eine weitere Verbesserung der Steifigkeit des Bleches 4 erreicht wird.
Die Platte 1 ist mit seinen äußeren Abmessungen so ausgebildet, daß diese im Rahmen 3 in vertikaler Richtung beweglich ist. Der Rahmen 3 ist auf einem Pressentisch 7 befestigt.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.

Der Negativform sind Mittel zur Druckbeaufschlagung zugeordnet, die unterschiedlich ausgebildet sein können. Gemäß Fig. 5 wird zur Strukturierung des Bleches 4 ein mit einem Elastomer 5 beschichteter Stempel 6 verwendet. Die Schichtstärke und die Elastizität des verwendeten Elastomers 5 wird dabei von der Blechdicke und der zu erreichenden Strukturierung bestimmt. Das Blech 4 lagert auf dem Rahmen 3 und wird während des Strukturierungsvorganges vom Stempel 6 fest mit dem Rahmen 3 verspannt. Durch die vertikale Bewegung des Ziehkissens 10 mit Platte 1 wird die durch die einzelnen geometrischen Körper 2 gebildete Negativform zusammen mit den gegebenenfalls verwendeten Leisten 8 gegen das Blech 4 gepreßt, wobei die vorgegebene Strukturierung des Bleches 4 erfolgt. Gemäß Fig. 6 erfolgt die Strukturierung durch eine Druckbeaufschlagung des Bleches 4 in einer 1. Stufe durch ein gasförmiges oder flüssiges Wirkmedium, welches über entsprechende Zuführungen 9 in den zwischen Stempel 6 mit Elastomerschicht 5 und Blech 4 befindlichen Zwischenraum gepreßt wird und zunächst zu einer gleichmäßigen Dehnung des zu Strukturierenden Bleches 4 führt. Die nachfolgende Ausbildung der Struktur des Bleches 4 erfolgt danach wie im vorhergehenden Beispiel unter Einsatz des mit einem Elastomer 5 beschichteten Stempels 6. Diese Ausgestaltung der Druckbeaufschlagung ermöglicht eine bessere Ausprägung der angestrebten Struktur.
Eine weitere Möglichkeit der Druckbeaufschlagung ist in Fig. 7 dargestellt. Gemäß dieser Ausführung erfolgt die Strukturierung durch eine Negativform und eine dazu entsprechend ausgestaltete Positivform, wobei sich die Positivform aus den gleichen geometrischen Körpern 2 aufbaut. Die verwendeten geometrischen Körper 2 werden dabei durch entsprechende Mittel in ihrer horizontalen Lage gehalten.
Diese Ausgestaltung der Druckmittelbeaufschlagung ist vorzugsweise für die Strukturierung höherer Blechdicken einsetzbar. The negative form is assigned means for pressurizing, which can be designed differently. 5, 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. 6, 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.
Another possibility of pressurization is shown in FIG. 7. According to this embodiment, 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.

Aufstellung der verwendeten BezugszeichenList of the reference symbols used

11
Platteplate
22nd
Körperbody
33rd
Rahmenframe
44th
Blechsheet
55
ElastomerElastomer
66
Stempelstamp
77
PressentischPress table
88th
LeistenAfford
99
Zufuhr für DruckmediumMedia feeder
1010th
ZiehkissenDie cushion

Claims (10)

Werkzeug zur Herstellung strukturierter dünner Bleche mit verbesserter Formsteifigkeit dadurch gekennzeichnet, daß auf einer formstabilen ebenen Platte (1) einzelne gleichartige geometrische Körper (2) gleicher oder verschiedener Größe in geordneter Form innerhalb eines Rahmens (3) angeordnet sind, die in ihrer Gesamtheit die Negativform für ein zu verformendes Blech(4) bilden und dieser Negativform Mittel zur Druckbeaufschlagung zugeordnet sind.Tool for the production of structured thin sheets with improved dimensional stability characterized in that on a dimensionally stable flat plate (1) individual geometrical bodies of the same type (2) of the same or different sizes are arranged in an orderly manner within a frame (3), which in their Together form the negative form for a sheet to be deformed (4) and this negative form means are assigned to pressurization. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, daß als geometrische Körper (2) Kugeln, Rollen odgl. verwendet werden.Tool according to claim 1, characterized in that as a geometric Body (2) balls, rollers or the like be used. Werkzeug nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Rahmen(3) in Abhängigkeit von der Größe der zu strukturierenden Fläche verstellbar ist.Tool according to claim 1 and 2, characterized in that the frame (3) is adjustable depending on the size of the surface to be structured. Werkzeug nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Anzahl der geometrischen Körper(2) im Rahmen(3) so bemessen ist, daß diese sich in ihrer Lage auf der Platte(1) selbst fixieren und innerhalb des Rahmens(3) in vertikaler Richtung beweglich sind.Tool according to claims 1 to 3, characterized in that the number the geometric body (2) in the frame (3) is dimensioned so that it is in their Fix the layer on the plate (1) yourself and within the frame (3) in a vertical position Are moving in the direction. Werkzeug nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Druckbeaufschlagung des zu verformenden Bleches(4) durch ein mit einem Elastomer(5) beschichteten Stempel(6) erfolgt.Tool according to claims 1 to 4, characterized in that the pressurization of the sheet to be deformed (4) by means of an elastomer (5) coated stamp (6). Werkzeug nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Druckbeaufschlagung des zu verformenden Bleches(4) durch ein gasförmiges oder flüssiges Medium erfolgt.Tool according to claims 1 to 4, characterized in that the pressurization of the sheet to be deformed (4) by a gaseous or liquid Medium is done. Werkzeug nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Druckbeaufschlagung des zu verformenden Bleches(4) durch Kombination der Merkmale gemäß der Ansprüche 5 und 6 erfolgt.Tool according to claims 1 to 4, characterized in that the pressurization of the sheet to be deformed (4) by combining the features according to claims 5 and 6. Werkzeug nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Druckbeaufschlagung des zu verformenden Bleches(4) durch eine an einem Stempel(6) befestigten Positivform erfolgt.Tool according to claims 1 to 4, characterized in that the pressurization of the sheet to be deformed (4) by a on a stamp (6) fixed positive form. Werkzeug nach den Ansprüchen 1 bis 4 sowie 8, dadurch gekennzeichnet, daß die in der Positivform angeordneten geometrischen Körper(2) selbstzentrierend befestigt sind.Tool according to claims 1 to 4 and 8, characterized in that the geometric bodies (2) arranged in the positive form are self-centering are attached. Werkzeug nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß an den Innenseiten des Rahmens(3) vorzugsweise auswechselbare Leisten(8) befestigt sind.Tool according to claims 1 to 4, characterized in that on the Interchangeable strips (8) are preferably attached to the inside of the frame (3) are.
EP99109493A 1998-05-14 1999-05-12 Tool for manufacturing structured metal sheets Expired - Lifetime EP0956912B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19821482 1998-05-14
DE19821482A DE19821482A1 (en) 1998-05-14 1998-05-14 Tool for the production of structured thin sheets

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EP0956912A1 true EP0956912A1 (en) 1999-11-17
EP0956912B1 EP0956912B1 (en) 2002-02-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003084693A1 (en) * 2002-04-11 2003-10-16 Daimlerchrysler Ag Method and embossing die for producing a structural part from a vault-structured sheet metal
CN111001698A (en) * 2019-10-22 2020-04-14 广东伟业铝厂集团有限公司 A nest some forming device for section bar
CN112935040A (en) * 2021-01-28 2021-06-11 佛山科学技术学院 Composite micro-nano lens array forming machining mechanism, mold core and hot pressing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009026190A1 (en) 2009-07-16 2011-01-27 Fachhochschule Lausitz Device for embossing variable surface structures in e.g. fleeces, has wheels controlled by drives that shift wheels individually or in groups into rotation around longitudinal axis of support roller and perpendicular to material web

Citations (2)

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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

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Publication number Priority date Publication date Assignee Title
DE3943146C2 (en) * 1989-12-28 1996-04-11 Rabe Juergen Injection molding, punching or drawing tools with interchangeable molds

Patent Citations (2)

* 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003084693A1 (en) * 2002-04-11 2003-10-16 Daimlerchrysler Ag Method and embossing die for producing a structural part from a vault-structured sheet metal
US7234336B2 (en) 2002-04-11 2007-06-26 Daimlerchrysler Ag Method and embossing die for producing a body structural part from a vault-structured sheet metal
CN111001698A (en) * 2019-10-22 2020-04-14 广东伟业铝厂集团有限公司 A nest some forming device for section bar
CN112935040A (en) * 2021-01-28 2021-06-11 佛山科学技术学院 Composite micro-nano lens array forming machining mechanism, mold core and hot pressing device

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DE19821482A1 (en) 1999-11-18
DE59900891D1 (en) 2002-04-04

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