EP1210191B1 - Method and device for forming conical tube casings - Google Patents

Method and device for forming conical tube casings Download PDF

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Publication number
EP1210191B1
EP1210191B1 EP00912327A EP00912327A EP1210191B1 EP 1210191 B1 EP1210191 B1 EP 1210191B1 EP 00912327 A EP00912327 A EP 00912327A EP 00912327 A EP00912327 A EP 00912327A EP 1210191 B1 EP1210191 B1 EP 1210191B1
Authority
EP
European Patent Office
Prior art keywords
stamp
matrix
shaping
conical
metal sheet
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
EP00912327A
Other languages
German (de)
French (fr)
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EP1210191A1 (en
Inventor
Werner Urech
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.)
Elpatronic AG
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Elpatronic AG
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Publication date
Application filed by Elpatronic AG filed Critical Elpatronic AG
Publication of EP1210191A1 publication Critical patent/EP1210191A1/en
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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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • B21C37/185—Making tubes with varying diameter in longitudinal direction conical tubes starting from sheet material
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles

Definitions

  • the invention relates to a method for molding from sheets to conical pipe jackets according to the preamble of claim 1 the invention a device according to the preamble of claim 5.
  • the invention is therefore based on the object Rounding plates in a simple way.
  • Figure 1 shows a rough schematic of the side view a device for the conical shaping of sheets.
  • a die 1 is shown, which has an inner one has in the longitudinal direction conical cavity 2, the indicated by the broken line 3 in the figure which is the lowest generatrix of the conical cavity 2 represents part of a truncated cone forms.
  • Figures 2a and 2b show the die 1 with their conical cavity 2 in vertical section along the Section lines B-B and C-C of Figure 1.
  • the stamp 4 is also tapering in the longitudinal direction as part 12 of a truncated cone shaped and corresponds in shape in the area that can be immersed in the die 1 is determined, the shape of the conical cavity, however reduced by the thickness of the sheet to be deformed.
  • the stamp 4 is also in FIGS.
  • the drive of the stamp 4 can be represented only schematically by a Crank assembly 10,11 take place, which the Stamp 4 moved into the die cavity 2 and there pressed against the sheet and the stamp 4 along with arrow A symbolized curve again from the matrix away.
  • Corresponding crank drives are the expert common and need not be shown here. Instead of using a pivot axis 5 and one
  • the crank mechanism can also have any other actuating elements, e.g. hydraulic or pneumatic actuators are used, which according to the stamp the curve shown or another curve shape move according to the description below and into the Insert the matrix and lead out of it.
  • Figure 3 shows the same device in one Starting position, with a sheet 6 to be deformed above the Die cavity is located.
  • the stamp 4 is now arranged in such a way that he essentially the sheet 6 in the starting position touched along its entire length so that the subsequent deformation of the sheet over the entire Sheet length starts at the same time.
  • Figure 4 shows the stamp 4, with its curved movement into the die 1 immerses in a position where it is approximately half immersed in the die, the latter is shown transparently in the drawing, so that the stamp 4 can be seen in its position in the die is.
  • FIG. 5 shows the stamp 4 in its end position, the curve movement preferably taking place in such a way that the stamp over its entire length essentially at the same time the sheet to lie in the bottom of the die brings. In this way, the sheet becomes evenly conical deformed like the shape of the stamp and die equivalent.
  • the end position shown in Figure 5 can pressing the sheet in a manner known per se to prevent reshaping.

Landscapes

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

Description

Die Erfindung betrifft ein Verfahren zur Formung von Blechen zu konischen Rohrmänteln gemäß Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung eine Vorrichtung gemäss Oberbegriff des Anspruchs 5.The invention relates to a method for molding from sheets to conical pipe jackets according to the preamble of claim 1 the invention a device according to the preamble of claim 5.

So ein Verfahren und so eine Vorrichtung sind aus der DE-B-1 059 389 bekannt.Such a method and device known from DE-B-1 059 389.

Für eine Vielzahl von Anwendungen sind konische Rohre erwünscht. Die Herstellung von konischen Rohrmänteln, die nachfolgend zu einem konischen Rohr verschweisst werden können, ist aber aufwendig.Are conical for a variety of applications Pipes wanted. The production of conical pipe jackets, which is subsequently welded into a conical tube can be, but is complex.

Der Erfindung liegt daher die Aufgabe zugrunde, Bleche auf einfache Weise konisch zu runden.The invention is therefore based on the object Rounding plates in a simple way.

Diese Aufgabe wird bei einem Verfahren der eingangs genannten Art mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.This task is carried out in a process of initially mentioned type with the characteristic features of claim 1 solved.

Ferner wird die Aufgabe bei einer Vorrichtung der eingangs genannten Art mit den kennzeichnenden Merkmalen des Anspruchs 5 gelöst.Furthermore, the task with a device of the type mentioned at the outset with the characteristic features of claim 5 solved.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnungen näher erläutert. Dabei zeigt

  • Figur 1 eine schematische Seitenansicht einer Pressvorrichtung mit Stempel und Matrize;
  • Figur 2a, 2b Querschnitte durch Stempel und Matrize;
  • Figur 3 die Vorrichtung von Figur 1 zu Beginn des Pressvorganges;
  • Figur 4 die Vorrichtung von Figur 1 während des Pressvorganges;
  • Figur 5 die Vorrichtung von Figur 1 am Ende des Pressvorganges; und
  • Figur 6 zusätzliche Formungsflügel.
    • Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows
  • Figure 1 is a schematic side view of a press device with punch and die;
  • Figure 2a, 2b cross sections through punch and die;
  • Figure 3 shows the device of Figure 1 at the beginning of the pressing process;
  • Figure 4 shows the device of Figure 1 during the pressing process;
  • Figure 5 shows the device of Figure 1 at the end of the pressing process; and
  • Figure 6 additional shaping wings.

    • Figur 1 zeigt grob schematisch die Seitenansicht einer Vorrichtung zum konischen Formen von Blechen. Dabei ist eine Matrize 1 dargestellt, welche einen inneren in Längsrichtung konischen Hohlraum 2 aufweist, der in der Figur durch die unterbrochene Linie 3 angedeutet ist, welche die unterste Mantellinie des konischen Hohlraumes 2 darstellt, der einen Teil eines Kegelstumpfes bildet. Die Figuren 2a und 2b zeigen die Matrize 1 mit ihrem konischen Hohlraum 2 im Vertikalschnitt entlang den Schnittlinien B-B und C-C von Figur 1. Der Stempel 4 ist ebenfalls in Längsrichtung konisch zulaufend als Teil 12 eines Kegelstumpfes geformt und entspricht in seiner Form in demjenigen Bereich, welcher zum Eintauchen in die Matrize 1 bestimmt ist, der Form des konischen Hohlraumes, jedoch vermindert um die Dicke des zu verformenden Bleches. In den Figuren 2a und 2b ist der Stempel 4 ebenfalls im Vertikalschnitt dargestellt, woraus die konische Form des Teils 12 des Stempels ersichtlich ist. In demjenigen Bereich, der nicht in die Matrize eintaucht, weicht der Stempel 4 von der Kegelstumpfform ab (die durch die unterbrochene Linie 9 angedeutet ist), um die Entnahme des konisch geformten Bleches zu erleichtern. Anstelle der in den Figuren 2a und 2b gezeigten runden Querschnittsform von Matrize und Stempel können natürlich auch beliebig andere konisch zulaufende Querschnittsformen verwendet werden. Bei dem in der Figur 1 gezeigten Beispiel ist der Stempel 4 um eine Schwenkachse 5 schwenkbar, um eine Kurvenbewegung gemäss Pfeil A zum Eintauchen in die Matrize 1 durchzuführen. Der Antrieb des Stempels 4 kann durch eine nur grob schematisch dargestellte Kurbelanordnung 10,11 erfolgen, welche den Stempel 4 in den Matrizenhohlraum 2 hineinbewegt und dort an das Blech anpresst und den Stempel 4 entlang der mit dem Pfeil A symbolisierten Kurve wieder aus der Matrize entfernt. Entsprechende Kurbeltriebe sind dem Fachmann geläufig und brauchen hier nicht weiter dargestellt werden. Anstelle der Verwendung einer Schwenkachse 5 und eines Kurbeltriebes können auch beliebig andere Betätigungselemente, z.B. hydraulische oder pneumatische Betätigungselemente verwendet werden, welche den Stempel gemäss der gezeigten Kurve oder einer anderen Kurvenform gemäss der nachfolgenden Beschreibung bewegen und in die Matrize einführen und aus dieser herausführen.Figure 1 shows a rough schematic of the side view a device for the conical shaping of sheets. A die 1 is shown, which has an inner one has in the longitudinal direction conical cavity 2, the indicated by the broken line 3 in the figure which is the lowest generatrix of the conical cavity 2 represents part of a truncated cone forms. Figures 2a and 2b show the die 1 with their conical cavity 2 in vertical section along the Section lines B-B and C-C of Figure 1. The stamp 4 is also tapering in the longitudinal direction as part 12 of a truncated cone shaped and corresponds in shape in the area that can be immersed in the die 1 is determined, the shape of the conical cavity, however reduced by the thickness of the sheet to be deformed. The stamp 4 is also in FIGS. 2a and 2b shown in vertical section, from which the conical Shape of part 12 of the stamp can be seen. In that one The area that is not immersed in the die gives way the stamp 4 from the truncated cone shape (which by the broken line 9 is indicated) to the removal to facilitate the conically shaped sheet. Instead of the round cross-sectional shape shown in Figures 2a and 2b of die and stamp can of course also any other conical cross-sectional shapes be used. In the one shown in FIG An example is the stamp 4 about a pivot axis 5 swiveling to a curve movement according to arrow A to Plunge into the die 1. The drive of the stamp 4 can be represented only schematically by a Crank assembly 10,11 take place, which the Stamp 4 moved into the die cavity 2 and there pressed against the sheet and the stamp 4 along with arrow A symbolized curve again from the matrix away. Corresponding crank drives are the expert common and need not be shown here. Instead of using a pivot axis 5 and one The crank mechanism can also have any other actuating elements, e.g. hydraulic or pneumatic actuators are used, which according to the stamp the curve shown or another curve shape move according to the description below and into the Insert the matrix and lead out of it.

    Figur 3 zeigt dieselbe Vorrichtung in einer Startposition, wobei ein zu verformendes Blech 6 über dem Matrizenhohlraum liegt. Der Stempel 4 ist nun derart angeordnet, dass er in der Startposition das Blech 6 im wesentlichen auf seiner ganzen Länge berührt, so dass die nachfolgende Verformung des Bleches auf der gesamten Blechlänge gleichzeitig beginnt. Figur 4 zeigt den Stempel 4, der mit seiner kurvenförmigen Bewegung in die Matrize 1 eintaucht, in einer Stellung, bei der er ungefähr zur Hälfte in die Matrize eingetaucht ist, wobei letztere in der Zeichnung durchsichtig dargestellt ist, so dass der Stempel 4 in seiner Lage in der Matrize ersichtlich ist. Figur 5 zeigt den Stempel 4 in seiner Endstellung, wobei die Kurvenbewegung vorzugsweise so erfolgt, dass der Stempel auf seiner ganzen Länge im wesentlichen gleichzeitig das Blech zum Anliegen im Grund der Matrize bringt. Auf diese Weise wird das Blech gleichmässig konisch verformt, wie es der Form von Stempel und Matrize entspricht. In der in Figur 5 gezeigten Endstellung kann auf an sich bekannte Weise ein Nachpressen des Bleches zur Verhinderung des Rückformung erfolgen.Figure 3 shows the same device in one Starting position, with a sheet 6 to be deformed above the Die cavity is located. The stamp 4 is now arranged in such a way that he essentially the sheet 6 in the starting position touched along its entire length so that the subsequent deformation of the sheet over the entire Sheet length starts at the same time. Figure 4 shows the stamp 4, with its curved movement into the die 1 immerses in a position where it is approximately half immersed in the die, the latter is shown transparently in the drawing, so that the stamp 4 can be seen in its position in the die is. FIG. 5 shows the stamp 4 in its end position, the curve movement preferably taking place in such a way that the stamp over its entire length essentially at the same time the sheet to lie in the bottom of the die brings. In this way, the sheet becomes evenly conical deformed like the shape of the stamp and die equivalent. In the end position shown in Figure 5 can pressing the sheet in a manner known per se to prevent reshaping.

    Mittels der beschriebenen Pressung des Bleches in der konischen Form kann zunächst ein seitlicher Bereich der Blechtafel konisch geformt werden, danach in einem weiteren Schritt ein weiterer seitlicher Bereich und schlussendlich der mittlere Bereich, so dass drei Pressvorgänge zur Erzeugung des konischen Rohrmantels vorgesehen sind. Es können indes auch mehr Presshübe, z.B. 5 oder 7 Hübe, vorgenommen werden. Die beiden Randbereiche der Blechtafel können indes auch schon auf andere Weise vorgeformt sein, so dass nur der Mittelteil in einem Presshub gemäss der Erfindung konisch verformt wird. Wie in Figur 6 schematisch angedeutet, welche Figur einen Vertikalschnitt durch eine konische Matrize und einen konischen Stempel zeigt, kann z.B. auch direkt der Mittelteil einer Blechtafel mit Stempel und Matrize konisch verformt werden, wobei zusätzlich für die Randbereiche Formungsflügel 7 und 8 vorgesehen sind, welche ebenfalls konisch sind und durch nicht dargestellte Betätigungselemente in Richtung der Pfeile D um den Stempel 4 schliessbar sind, um die Randbereiche des Bleches ebenfalls an den Stempel anzudrücken.Using the described pressing of the sheet in the conical form can initially be a side Area of the metal sheet are conical, then in a further step another side area and finally the middle area, so three Pressing processes to create the conical tube jacket are provided. However, more press strokes can also be e.g. 5 or 7 strokes. The two border areas the sheet of metal can already be used on others Be preformed so that only the middle part in a tapered stroke according to the invention becomes. As schematically indicated in Figure 6, which figure a vertical section through a conical die and a shows conical stamp, e.g. also directly the Middle part of a sheet of metal with stamp and die conical be deformed, with additional for the edge areas Forming wings 7 and 8 are provided, which are also conical and by actuators, not shown in the direction of arrows D around the stamp 4 are closable to the edge areas of the sheet as well to press the stamp.

    Claims (8)

    1. Method for shaping metal sheets (6) into conical tubular casings, and in at least one shaping stage a conical matrix (1, 2) and a corresponding conically shaped stamp (4) conically press the respective sheet, and at the start of compression the conical stamp (4) essentially makes contact with the metal sheet (6) lying on the matrix (1, 2) over its entire length, characterised in that the stamp executes a curved movement (A) whilst immersed in the matrix.
    2. Method according to Claim 1, characterised in that the stamp (4) immerses into the matrix (1, 2) in such a manner that it essentially arrives at the same time over its entire length at the base (3) of the matrix.
    3. Method according to Claim 1 or 2, characterised in that a plurality of shaping stages according to Claim 1 is executed, in particular three or more of such shaping stages, or in the case of a metal sheet with pre-shaped edge areas only one shaping stage according to Claim 1 is performed in the central area of the metal sheet.
    4. Method according to one of Claims 1 to 3, characterised in that further shaping is carried out by means of shaping elements (7, 8) above the matrix (1, 2).
    5. Device for shaping metal sheets (6) into conical tubular casings, comprising a matrix (1) with conical shaping area (2), a conical stamp (4) which corresponds with the matrix shape, characterised by an operating means (5, 9) which the stamp (4) inserts along a curved track (1) into the matrix.
    6. Device according to Claim 5, characterised in that the stamp (4) is arranged to be pivotal around a pivotal axis (5).
    7. Device according to Claim 5, characterised in that the curve is produced by means of hydraulic or pneumatic elements which engage the stamp.
    8. Device according to one of Claims 5 to 7, characterised in that additional shaping elements (7, 8) are provided by means of which metal sheet areas outside the matrix (1, 2) can be shaped.
    EP00912327A 1999-08-13 2000-04-06 Method and device for forming conical tube casings Expired - Lifetime EP1210191B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    CH148299 1999-08-13
    CH148299 1999-08-13
    PCT/CH2000/000202 WO2001012356A1 (en) 1999-08-13 2000-04-06 Method and device for forming conical tube casings

    Publications (2)

    Publication Number Publication Date
    EP1210191A1 EP1210191A1 (en) 2002-06-05
    EP1210191B1 true EP1210191B1 (en) 2003-09-24

    Family

    ID=4211501

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00912327A Expired - Lifetime EP1210191B1 (en) 1999-08-13 2000-04-06 Method and device for forming conical tube casings

    Country Status (6)

    Country Link
    US (1) US6675627B1 (en)
    EP (1) EP1210191B1 (en)
    AU (1) AU3414900A (en)
    CA (1) CA2380634C (en)
    DE (1) DE50003850D1 (en)
    WO (1) WO2001012356A1 (en)

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB0011894D0 (en) * 2000-05-18 2000-07-05 Bae Sys Defence Sys Ltd Tools and process for forming conical components
    WO2009023973A1 (en) * 2007-08-21 2009-02-26 Soutec Soudronic Ag Apparatus and process for shaping a tube from a metal sheet
    CN102689182B (en) * 2012-06-15 2015-11-18 浙江博雷重型机床制造有限公司 A kind of Automatic production line of spiral ground pile

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US61678A (en) * 1867-01-29 miller
    US179501A (en) * 1876-07-04 Improvement in spout-formers
    US800508A (en) * 1905-03-07 1905-09-26 American Brake Co Machine for forming springs.
    US2701001A (en) * 1953-09-23 1955-02-01 James Hardy Monroe Device for bending sheet material
    DE1059389B (en) * 1956-11-09 1959-06-18 Wilhelmsburger Maschf Press for the production of conical hollow bodies, profiles or the like.

    Also Published As

    Publication number Publication date
    WO2001012356A1 (en) 2001-02-22
    US6675627B1 (en) 2004-01-13
    CA2380634A1 (en) 2001-02-22
    DE50003850D1 (en) 2003-10-30
    EP1210191A1 (en) 2002-06-05
    CA2380634C (en) 2008-06-17
    AU3414900A (en) 2001-03-13

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