EP2616197B1 - Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time - Google Patents

Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time Download PDF

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Publication number
EP2616197B1
EP2616197B1 EP11755339.6A EP11755339A EP2616197B1 EP 2616197 B1 EP2616197 B1 EP 2616197B1 EP 11755339 A EP11755339 A EP 11755339A EP 2616197 B1 EP2616197 B1 EP 2616197B1
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EP
European Patent Office
Prior art keywords
tool
shaped
tool half
blank
stamp
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EP11755339.6A
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German (de)
French (fr)
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EP2616197A1 (en
Inventor
Thomas Flehmig
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ThyssenKrupp Steel Europe AG
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ThyssenKrupp Steel Europe AG
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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • 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
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • 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
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/14—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by turning devices, e.g. turn-tables
    • 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
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes

Definitions

  • the invention relates to a device for producing at least partially closed hollow profiles from a board by a U-O-forming with a tool comprising at least one U-punch and at least one upper die in a first mold half.
  • the invention relates to a method for producing at least partially closed hollow profiles from a circuit board.
  • At least partially closed hollow sections are often used in the automotive industry to replace open and welded profiles.
  • the resulting from the complex shape number of forming steps precludes an economical way of manufacturing.
  • the standard UO forming process requires at least two forming steps, whereby each forming step is carried out separately in one or more presses and the component is passed on between the workstations.
  • this device requires extensive tool sets as well as several robots or feeders for transporting the blanks or half-finished blanks between the individual presses.
  • there is the problem that in the UO-forming the first at least partially U-shaped formed board is removed from the die and is introduced into the die for O-forming.
  • the present invention is therefore based on the object to provide a device and a method for producing at least partially closed hollow sections of a board, which ensures the production of corresponding profiles with a short cycle time and high process reliability.
  • the object is achieved by a generic device characterized, at least two identical, at least partially U-shaped dies are provided in a second mold half, the U-punch and the upper die of the first mold half at the same time with the tool each engage an at least partially U-shaped die, the at least one U-punch and the at least one upper die the first mold half and the at least two at least partially U-shaped dies of the second mold half are rotationally symmetrical to a rotation axis extending in the closing direction of the tool and the first and the second mold halves are rotatable relative to each other about this axis of rotation, so that by a rotation of the first and / or the second tool half of the U-punch and the upper die can each be in engagement with the first or the second at least partially U-shaped die.
  • the device according to the invention has in a tool each rotationally symmetrical arranged mold elements for performing a U-forming a planar board and an O-forming an at least partially U-shaped board to a finished at least partially closed hollow profile in both mold halves. It makes it possible, for example by a simple rotation of the first tool half relative to the second tool half, that the over the U-punch at least partially reshaped to a U-shaped board with the blank die can be formed into an at least partially closed profile, without the Board must be removed from the U-shaped die. If at the same time a flat board is inserted in the other U-shaped board, a component can be completed against each other during the next closing of the tool with prior rotation of the tool halves. As a result, the cycle times for the production of at least partially closed hollow profiles are very low. In addition, the risk of damage to the board by changing the dies before completion of the partially closed hollow profile is avoided.
  • the inventive device can be further configured in that the first or the second mold half is fixed, wherein the first or the second mold half is arranged on a rotatable about the rotation axis of the mounting plate.
  • the first or the second tool half is arranged on a mounting plate which is rotatably mounted about the axis of rotation.
  • This has the advantage that the costs for the production of the device are kept lower and beyond wear-prone, moving parts of the device can be avoided.
  • a core pulling device can be provided for each die of the second mold half.
  • the Kernzugvoriques allows easy insertion of a support core in the at least partially U-shaped formed board before the O-forming to a partially closed hollow profile.
  • the device according to the invention can be further improved in that downholders are associated with the U-punch in the first mold half. Hold-downs are particularly needed to control the material intake in the manufacture of an at least partially U-shaped board.
  • the at least partially U-shaped dies of the second mold half have side walls whose height is at least half of the maximum, rolled-out side wall length of the hollow profile to be produced.
  • the maximum unrolled side wall length of the hollow profile to be produced corresponds to the maximum length of a U-leg of the at least partially U-shaped formed blank prior to its O-forming.
  • the capacity of the device can be increased by the fact that the first tool half has a pair of U-shaped pistons and upper dies arranged in pairs and rotationally symmetrical to one axis of rotation each, and the second tool half has an identical number of at least partially U-shaped dies rotationally symmetrical to the respective axes of rotation having.
  • a tool half of the device for example, two rotatable part tools, each with a U-punch and each have a top die.In conjunction with the opposing identical dies then two finished molded, at least partially closed hollow profiles can be produced with each stroke.
  • the capacity of the device can thus be doubled, for example.
  • the first and / or the second mold half is rotated about the axis of rotation after opening the tool. It is particularly advantageous if one of the tool halves is designed to be stationary, so that the drives for carrying out the rotation can be dispensed with. In this case, the other drives are not needed and reduces the expenditure on equipment. It is also conceivable, however, as already stated, that both tool halves are rotated in opposite directions after opening the tool about the rotation axis in order to engage each other again in order to halve the rotation angles of the two tool halves and to reduce the cycle times.
  • the O-forming can be made more process-reliable in that before forming an at least partially U-shaped blank into an at least partially closed hollow profile using a core pulling device, a supporting core in the respective at least partially U-shaped board is positioned in the second mold half. After the O-forming of the support core is removed again from the finished molded at least partially closed hollow profile.
  • the at least partially U-shaped dies laterally displaceable portions of the side walls with Einlaufrundungen and move when closing the mold halves, the side walls of the upper die of the first mold half after the sliding portions of the side walls of the at least partially U-shaped dies of the second mold half after outside, the Einfädelungslui the U-legs of the at least partially U-shaped board in the O-forming can be facilitated to an at least partially closed hollow profile.
  • FIGS. 1 to 9 show in a schematic sectional view of an inventive device 1 for producing at least partially closed hollow sections of a board 2, with a tool 3.
  • the tool 3 has two mold halves 6, 8, wherein in the first mold half 6, a U-punch 4 and an upper die 5 is provided.
  • the second mold half 8 has two identical at least partially U-shaped dies 7, which are arranged rotationally symmetrical to the rotation axis 9 together with the U-punch 4 and the upper dies 5 of the first mold half.
  • the U-punch 4 and the upper die 5 are at a closing movement of the tool 3 at the same time in engagement with two at least partially U-shaped dies 7 of the second mold half 8.
  • hold-down 11 are also provided, via which the material flow of the board during the U-forming can be controlled and which fix the board 2 during the deformation.
  • the mounting plate 10, on which both the U-punch 4 and the upper die 5 and the hold-down 11 of the first mold half 6 are arranged, is rotatably mounted about the rotation axis 9.
  • FIG. 2 now the device according to the invention is shown in the closed state.
  • the U-punch 4 converts the inserted first board 2 into an at least partially U-shaped board, wherein the hold-downs 11 control the flow of material during forming by setting a corresponding contact force.
  • the tool opens again until the tool halves 6, 8 can be rotated against each other.
  • a rotation of the first tool half 6, as shown in the present embodiment, about the axis of rotation 9 allows the positioning of the U-punch 4 above a board 12, which has been inserted in the second at least partially U-shaped die 7 of the mold half 8.
  • both an at least partially closed hollow profile 2 and an at least partially U-shaped circuit board 14 are produced. This is the first closing stroke of the tool in which a finished made, partially closed hollow section 2 is produced.
  • FIG. 5 shows the embodiment of the device in the open state.
  • the partially closed hollow profile 2 can from the open tool 3, as in FIG. 6 are shown, removed and a new board 15 in the liberated, at least partially U-shaped die 7 of the second mold half 8 are inserted.
  • the first mold half 6 is again rotated about the axis of rotation 9, so that again the punch 4 engages with the board 15 and the upper die 5 of the first mold half 6 engages with the at least partially U-shaped board 14.
  • a support core 13 was introduced here in the at least partially U-shaped die 7 of the second mold half.
  • FIG. 8 the embodiment of the device according to the invention after the next closing operation, however, in the open state shows FIG. 8 .
  • the U-shaped board 14 has been formed in the other, identical U-shaped die 7 to a finished, at least partially closed hollow section 14 and can be removed.
  • the die 7 is equipped with a next board 17.
  • the first tool half 6 is again rotated relative to the second tool half 8, so that the U-punch 4 converts the newly inserted board 17 in the next closing operation to an at least partially U-shaped board, Fig. 9 ,
  • FIG. 10 illustrated embodiment can be used.
  • the second tool half 8 ' comprises a total of four identical at least partially U-shaped dies 7', which are used for UO-forming.
  • FIG. 10 illustrated device 1 'is therefore characterized by a twice as high capacity as in the FIGS. 1 to 9 shown device.
  • the Einfädelungsvorgang is shown using the laterally displaceable portions 20 of the side walls of the at least partially U-shaped dies 7 in the O-forming.
  • the upper die 5 has side walls 19, which displace the displaceable portions 20 of the side walls of the at least partially U-shaped die 7 of the second tool half outwards with the aid of the inlet curves 21, so that the at least partially U-shaped board 2 in the upper die. 5 threads particularly safe.
  • the inlet curves 21 provide, together with the height of the side walls of the at least partially U-shaped Dies 7 for a particularly reliable threading process succeeds, since the springback of the U-shaped shaped board in the die 7 is low.
  • the outward displacement of the subregions 20 of the side walls 19 is additionally actively supported in order to minimize the wear on the inlet curves.
  • the side walls of the at least partially U-shaped die 7 have a height of at least half of the maximum, rolled-out side wall length of the hollow profile to be produced, ie a leg of the at least partial U-profile.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung zumindest teilweise geschlossener Hohlprofile aus einer Platine durch eine U-O-Umformung mit einem Werkzeug umfassend mindestens einen U-Stempel und mindestens ein Obergesenk in einer ersten Werkzeughälfte. Daneben betrifft die Erfindung ein Verfahren zur Herstellung von zumindest teilweise geschlossenen Hohlprofilen aus einer Platine.The invention relates to a device for producing at least partially closed hollow profiles from a board by a U-O-forming with a tool comprising at least one U-punch and at least one upper die in a first mold half. In addition, the invention relates to a method for producing at least partially closed hollow profiles from a circuit board.

Zumindest teilweise geschlossene Hohlprofile werden häufig im Kraftfahrzeugbau zum Ersetzen von offenen und miteinander verschweißten Profilen verwendet. Die aus der komplexen Formgebung resultierende Anzahl an Umformschritten steht jedoch einer wirtschaftlichen Herstellweise entgegen. Die serienmäßig verwendete U-O-Umformung benötigt mindestens zwei Einformschritte, wobei jeder Einformschritt separat in einer oder mehreren Pressen realisiert wird und das Bauteil zwischen den Arbeitsstationen weitergereicht wird. Bei günstiger Auslegung kann zwar so pro Pressenhub ein fertiges Teil hergestellt werden, allerdings benötigt diese Vorrichtung umfangreiche Werkzeugsätze sowie mehrere Roboter oder Feeder zum Transport der Platinen bzw. der halbfertigen Platinen zwischen den einzelnen Pressen. Insbesondere besteht die Problematik, dass bei der U-O-Umformung die zunächst zumindest teilweise U-förmig umgeformte Platine aus dem Gesenk entnommen wird und in das Gesenk zur O-Umformung eingebracht wird. Hieraus resultieren prozesstechnische Probleme, insbesondere in Bezug auf eine Schieflage während des Einsetzens in das O-Gesenk. Darüber hinaus können Probleme bei stark rückfedernden Werkstoffen darin bestehen, dass diese nicht ohne Weiteres in das Gesenk zur O-Umformung eingebracht werden können. Aus der gattungsgemäßen und auf die Anmelderin zurückgehende deutsche Offenlegungsschrift DE 10 2007 021 798 A1 ist eine Vorrichtung zur Herstellung von zumindest teilweise geschlossenen Profilen bekannt, welche eine verschiebbare Grundplatte und einen verschiebbaren Stempel umfasst, so dass die zunächst U-förmig umgeformte Platine in der entsprechenden Matrize vor der O-Umformung verbleiben kann. Die von dieser Vorrichtung erreichbare Taktzeit ist allerdings verbesserungswürdig, da lediglich mit jedem zweiten Pressenhub ein fertiges Teil hergestellt wird. Darüber hinaus ist der apparative Aufwand dieser Vorrichtung relativ groß.At least partially closed hollow sections are often used in the automotive industry to replace open and welded profiles. The resulting from the complex shape number of forming steps, however, precludes an economical way of manufacturing. The standard UO forming process requires at least two forming steps, whereby each forming step is carried out separately in one or more presses and the component is passed on between the workstations. With a favorable design, although a finished part can be produced per press stroke, this device requires extensive tool sets as well as several robots or feeders for transporting the blanks or half-finished blanks between the individual presses. In particular, there is the problem that in the UO-forming the first at least partially U-shaped formed board is removed from the die and is introduced into the die for O-forming. This results in process engineering Problems, especially in relation to a tilt during insertion into the O-die. In addition, problems with highly rebounding materials can be that they can not be easily introduced into the die for O-forming. From the generic and attributable to the applicant German patent application DE 10 2007 021 798 A1 a device for producing at least partially closed profiles is known, which comprises a displaceable base plate and a displaceable punch, so that the initially U-shaped reshaped board can remain in the corresponding die before the O-forming. However, the cycle time achievable by this device is in need of improvement, since a finished part is produced only with every second press stroke. In addition, the expenditure on equipment of this device is relatively large.

Hiervon ausgehend liegt der vorliegenden Erfindung daher die Aufgabe zu Grunde, eine Vorrichtung und ein Verfahren zur Herstellung von zumindest teilweise geschlossenen Hohlprofilen aus einer Platine vorzuschlagen, welches die Herstellung von entsprechenden Profilen mit kurzer Taktzeit und hoher Prozesssicherheit gewährleistet.On this basis, the present invention is therefore based on the object to provide a device and a method for producing at least partially closed hollow sections of a board, which ensures the production of corresponding profiles with a short cycle time and high process reliability.

Gemäß einer ersten Lehre der vorliegenden Erfindung wird die Aufgabe durch eine gattungsgemässe Vorrichtung dadurch gelöst, mindestens zwei identische, zumindest teilweise U-förmige Gesenke in einer zweiten Werkzeughälfte vorgesehen sind, der U-Stempel und das Obergesenk der ersten Werkzeughälfte beim Schließen des Werkzeugs gleichzeitig mit jeweils einer zumindest teilweise U-förmigen Matrize im Eingriff stehen, der mindestens eine U-Stempel und das mindestens eine Obergesenk der ersten Werkzeughälfte und die mindestens zwei zumindest teilweise U-förmigen Gesenke der zweiten Werkzeughälfte zu einer in Schließrichtung des Werkzeugs verlaufenden Rotationsachse rotationssymmetrisch angeordnet sind und die erste und die zweite Werkzeughälfte relativ zueinander um diese Rotationsachse drehbar sind, so dass durch eine Drehung der ersten und/oder der zweiten Werkzeughälfte der U-Stempel und das Obergesenk jeweils mit dem ersten oder dem zweiten zumindest teilweise U-förmigen Gesenk in Eingriff stehen können.According to a first teaching of the present invention, the object is achieved by a generic device characterized, at least two identical, at least partially U-shaped dies are provided in a second mold half, the U-punch and the upper die of the first mold half at the same time with the tool each engage an at least partially U-shaped die, the at least one U-punch and the at least one upper die the first mold half and the at least two at least partially U-shaped dies of the second mold half are rotationally symmetrical to a rotation axis extending in the closing direction of the tool and the first and the second mold halves are rotatable relative to each other about this axis of rotation, so that by a rotation of the first and / or the second tool half of the U-punch and the upper die can each be in engagement with the first or the second at least partially U-shaped die.

Die erfindungsgemäße Vorrichtung weist in einem Werkzeug jeweils rotationssymmetrisch angeordnete Formelemente zur Durchführung einer U-Umformung einer ebenen Platine und einer O-Umformung einer zumindest teilweise U-förmigen Platine zu einem fertig zumindest teilweise geschlossenen Hohlprofil in beiden Werkzeughälften auf. Sie ermöglicht es, beispielsweise durch eine einfache Drehung der ersten Werkzeughälfte gegenüber der zweiten Werkzeughälfte, dass die über den U-Stempel zumindest teilweise zu einer U-förmigen Platine umgeformte Platine mit dem Obergesenk zu einem zumindest teilweise geschlossenen Profil umgeformt werden kann, ohne dass die Platine aus dem U-förmigen Gesenk entnommen werden muss. Ist gleichzeitig in der anderen U-förmigen Platine eine ebene Platine eingelegt, kann auch beim nächsten Schließen des Werkzeugs bei vorheriger Drehung der Werkzeughälften gegeneinander ein Bauteil fertig gestellt werden. Im Ergebnis sind die Taktzeiten zur Herstellung von zumindest teilweise geschlossenen Hohlprofilen sehr gering. Darüber hinaus wird auch die Gefahr einer Beschädigung der Platine durch einen Wechsel der Gesenke vor Fertigstellung des teilweise geschlossenen Hohlprofils vermieden.The device according to the invention has in a tool each rotationally symmetrical arranged mold elements for performing a U-forming a planar board and an O-forming an at least partially U-shaped board to a finished at least partially closed hollow profile in both mold halves. It makes it possible, for example by a simple rotation of the first tool half relative to the second tool half, that the over the U-punch at least partially reshaped to a U-shaped board with the blank die can be formed into an at least partially closed profile, without the Board must be removed from the U-shaped die. If at the same time a flat board is inserted in the other U-shaped board, a component can be completed against each other during the next closing of the tool with prior rotation of the tool halves. As a result, the cycle times for the production of at least partially closed hollow profiles are very low. In addition, the risk of damage to the board by changing the dies before completion of the partially closed hollow profile is avoided.

Die erfindungsgemäße Verrichtung kann dadurch weiter ausgestaltet werden, dass die erste oder die zweite Werkzeughälfte feststehend ausgebildet ist, wobei die erste oder die zweite Werkzeughälfte auf einer um die Rotationsachse drehbaren Montageplatte angeordnet ist. Üblicher Weise wird lediglich eine der Werkzeughälften, die erste oder die zweite Werkzeughälfte, auf einer Montageplatte, welche um die Rotationsachse drehbar gelagert ist, angeordnet. Dies hat den Vorteil, dass die Kosten für die Herstellung der Vorrichtung geringer gehalten werden und darüber hinaus verschleißanfällige, bewegte Teile der Vorrichtung vermieden werden. Allerdings ist auch denkbar, beide Werkzeughälften drehbar auf jeweils einer Montageplatte anzuordnen, um beispielsweise durch eine Halbierung des Drehwinkels der Werkzeughälften die Taktzeiten zu minimieren.The inventive device can be further configured in that the first or the second mold half is fixed, wherein the first or the second mold half is arranged on a rotatable about the rotation axis of the mounting plate. Usually, only one of the tool halves, the first or the second tool half, is arranged on a mounting plate which is rotatably mounted about the axis of rotation. This has the advantage that the costs for the production of the device are kept lower and beyond wear-prone, moving parts of the device can be avoided. However, it is also conceivable to arrange both tool halves rotatably on a respective mounting plate in order to minimize the cycle times, for example, by halving the angle of rotation of the mold halves.

Zur Herstellung komplexer Formen aber auch zur Verbesserung des Abformens der zumindest teilweise geschlossenen Höhlprofile kann vorzugsweise eine Kernzugvorrichtung für jede Matrize der zweiten Werkzeughälfte vorgesehen sein. Die Kernzugvorrichtung ermöglicht das einfache Einbringen eines Stützkerns in die zumindest teilweise U-förmig umgeformte Platine vor der O-Umformung zu einem teilweise geschlossenen Hohlprofil.For producing complex shapes but also for improving the molding of the at least partially closed hollow profiles, preferably a core pulling device can be provided for each die of the second mold half. The Kernzugvorrichtung allows easy insertion of a support core in the at least partially U-shaped formed board before the O-forming to a partially closed hollow profile.

Darüber hinaus kann die erfindungsgemäße Vorrichtung dadurch weiter verbessert werden, dass dem U-Stempel in der ersten Werkzeughälfte Niederhalter zugeordnet sind. Niederhalter werden insbesondere dazu benötigt, den Materialeinzug bei der Herstellung einer zumindest teilweise U-förmigen Platine zu kontrollieren.In addition, the device according to the invention can be further improved in that downholders are associated with the U-punch in the first mold half. Hold-downs are particularly needed to control the material intake in the manufacture of an at least partially U-shaped board.

Vorzugsweise weisen die zumindest teilweise U-förmigen Gesenke der zweiten Werkzeughälfte Seitenwände auf, deren Höhe mindestens die Hälfte der maximalen, ausgerollten Seitenwandlänge des herzustellenden Hohlprofils beträgt. Die maximal ausgerollte Seitenwandlänge des herzustellenden Hohlprofils entspricht der maximalen Länge eines U-Schenkels der zumindest teilweise U-förmig umgeformten Platine vor deren O-Umformung. Diese Seitenwände der zumindest teilweise U-förmigen Gesenke ermöglichen eine Umformung der zumindest teilweise U-förmigen Platine mit höherer Prozesssicherheit bei der nachfolgenden O-Umformung, da mit diesen der Einfädelprozess der Schenkel der zumindest teilweise U-förmigen Platine in das Obergesenk verbessert wird.Preferably, the at least partially U-shaped dies of the second mold half have side walls whose height is at least half of the maximum, rolled-out side wall length of the hollow profile to be produced. The maximum unrolled side wall length of the hollow profile to be produced corresponds to the maximum length of a U-leg of the at least partially U-shaped formed blank prior to its O-forming. These sidewalls of the at least partially U-shaped dies enable the at least partially U-shaped board to be reshaped with higher process reliability during the subsequent O-forming, since this improves the threading process of the legs of the at least partially U-shaped board into the upper die.

Die Kapazität der Vorrichtung kann dadurch gesteigert werden, dass die erste Werkzeughälfte eine Mehrzahl an paarweise und rotationssymmetrisch zu jeweils einer Rotationsachse angeordnete U-Stempel und Obergesenke aufweist und die zweite Werkzeughälfte eine identische Anzahl rotationssymmetrisch zu den jeweiligen Rotationsachsen angeordnete, zumindest teilweise U-förmige Gesenke aufweist. Mit anderen Worten können in einer Werkzeughälfte der Vorrichtung beispielsweise zwei drehbare Teilwerkzeuge mit jeweils einem U-Stempel und jeweils einem Obergesenk vorhanden sein.In Verbindung mit den gegenüber angeordneten identischen Gesenken können dann mit jedem Arbeitshub zwei fertig geformte, zumindest teilweise geschlossene Hohlprofile hergestellt werden. Die Kapazität der Vorrichtung kann also beispielsweise verdoppelt werden. Durch die Erhöhung der Anzahl Umformelemente lässt sich nicht nur Taktzeit verringern, sondern es lassen sich auch noch weitere Bearbeitungsschritte in der gleichen Vorrichtung integrieren.The capacity of the device can be increased by the fact that the first tool half has a pair of U-shaped pistons and upper dies arranged in pairs and rotationally symmetrical to one axis of rotation each, and the second tool half has an identical number of at least partially U-shaped dies rotationally symmetrical to the respective axes of rotation having. In other words, in a tool half of the device, for example, two rotatable part tools, each with a U-punch and each have a top die vorhanden.In conjunction with the opposing identical dies then two finished molded, at least partially closed hollow profiles can be produced with each stroke. The capacity of the device can thus be doubled, for example. By increasing the number of forming elements can not only reduce cycle time, but it can also be integrate further processing steps in the same device.

Gemäß einer zweiten Lehre der vorliegenden Erfindung wird die oben aufgezeigt Aufgabe durch ein Verfahren gelöst, welches die erfindungsgemäße Vorrichtung verwendet und die folgenden Schritte umfasst:

  • Einlegen einer ersten ebenen Platine in ein erstes zumindest teilweise U-förmiges Gesenk der zweiten Werkzeughälfte,
  • Umformen der ersten Platine zu einer zumindest teilweise U-förmigen Platine durch Schließen der Werkzeughälften unter Verwendung des U-Stempels der ersten Werkzeughälfte,
  • Öffnen des Werkzeugs und Drehung der ersten und zweiten Werkzeughälfte gegeneinander um eine in Schließrichtung des Werkzeugs verlaufenden Rotationsachse, so dass der U-Stempel der ersten Werkzeughälfte über der zweiten zumindest teilweise U-förmigen Matrize der zweiten Werkzeughälfte und das Obergesenk der ersten Werkzeughälfte über dem ersten zumindest teilweise U-förmigen Gesenk der zweiten Werkzeughälfte positioniert ist,
  • Einlegen einer zweiten ebenen Platine in dem zweiten zumindest teilweise U-förmigen Gesenk der zweiten Werkzeughälfte,
  • Schließen der Werkzeughälften und gleichzeitiges Umformen der teilweise U-förmigen ersten Platine zu einem zumindest teilweise geschlossenen Hohlprofil unter Verwendung des Obergesenks der ersten Werkzeughälfte und Umformen der zweiten Platine zu einer teilweise U-förmigen Platine unter Verwendung des U-Stempels der ersten Werkzeughälfte.
According to a second teaching of the present invention, the object indicated above is achieved by a method which uses the device according to the invention and comprises the following steps:
  • Inserting a first planar board in a first at least partially U-shaped die of the second tool half,
  • Forming the first board to an at least partially U-shaped board by closing the mold halves using the U-punch of the first mold half,
  • Opening the tool and rotation of the first and second tool half against each other about an axis of rotation in the closing direction of the tool, so that the U-punch of the first mold half over the second at least partially U-shaped die of the second mold half and the upper die of the first mold half over the first positioned at least partially U-shaped die of the second tool half,
  • Inserting a second planar board in the second at least partially U-shaped die of the second tool half,
  • Closing the tool halves and simultaneously forming the partially U-shaped first board to an at least partially closed hollow profile using the Upper die of the first mold half and forming the second board to a partially U-shaped board using the U-stamp of the first mold half.

Mit dem erfindungsgemäßen Verfahren ist es möglich unter besonders kurzen Taktzeiten mit jedem Schließhub des Werkzeugs jeweils ein teilweise geschlossenes Hohlprofil herzustellen, sobald beide U-förmigen Gesenke vor dem nächsten Schließhub mit umzuformenden Teilen bestückt sind. Darüber hinaus ist aufgrund des einfachen Aufbaus der erfindungsgemäßen Vorrichtung die Kosten des Verfahrens entsprechend gering.With the method according to the invention, it is possible under particularly short cycle times to produce a partially closed hollow profile with each closing stroke of the tool, as soon as both U-shaped dies are equipped with parts to be formed before the next closing stroke. In addition, the cost of the method is correspondingly low due to the simple structure of the device according to the invention.

Vorzugsweise wird die erste und/oder die zweite Werkzeughälfte nach dem Öffnen des Werkzeugs um die Rotationsachse gedreht. Insbesondere vorteilhaft ist, wenn eine der Werkzeughälften feststehend ausgebildet ist, so dass auf die Antriebe zur Durchführung der Rotation verzichtet werden kann. In diesem Fall werden die weiteren Antriebe nicht benötigt und der apparative Aufwand verringert. Denkbar ist aber auch, wie bereits ausgeführt, dass beide Werkzeughälften nach dem Öffnen des Werkzeugs um die Rotationsachse entgegengesetzt gedreht werden, um miteinander erneut im Eingriff zu stehen, um die Drehwinkel beider Werkzeughälften zu halbieren und insofern auch die Taktzeiten zu reduzieren.Preferably, the first and / or the second mold half is rotated about the axis of rotation after opening the tool. It is particularly advantageous if one of the tool halves is designed to be stationary, so that the drives for carrying out the rotation can be dispensed with. In this case, the other drives are not needed and reduces the expenditure on equipment. It is also conceivable, however, as already stated, that both tool halves are rotated in opposite directions after opening the tool about the rotation axis in order to engage each other again in order to halve the rotation angles of the two tool halves and to reduce the cycle times.

Die O-Umformung kann gemäß einer weiteren Ausgestaltung dadurch prozesssicherer gestaltet werden, dass vor dem Umformen einer zumindest teilweisen U-förmigen Platine zu einem zumindest teilweise geschlossenen Hohlprofil unter Verwendung einer Kernzugvorrichtung ein Stützkern in der jeweiligen zumindest teilweise U-förmigen Platine in der zweiten Werkzeughälfte positioniert wird. Nach der O-Umformung wird der Stützkern wieder aus dem fertig geformten zumindest teilweise geschlossenen Hohlprofil entfernt.According to a further embodiment, the O-forming can be made more process-reliable in that before forming an at least partially U-shaped blank into an at least partially closed hollow profile using a core pulling device, a supporting core in the respective at least partially U-shaped board is positioned in the second mold half. After the O-forming of the support core is removed again from the finished molded at least partially closed hollow profile.

Weisen schließlich gemäß einer weiteren Ausführungsform die zumindest teilweise U-förmigen Gesenke seitlich verschiebbare Teilbereiche der Seitenwände mit Einlaufrundungen auf und verschieben beim Schließen der Werkzeughälften die Seitenwände des Obergesenks der ersten Werkzeughälfte die verschiebbaren Teilbereiche der Seitenwände der zumindest teilweise U-förmigen Gesenke der zweiten Werkzeughälfte nach außen, kann der Einfädelungsprozess der U-Schenkel der zumindest teilweise U-förmigen Platine bei der O-Umformung zu einem zumindest teilweise geschlossenen Hohlprofil erleichtert werden.Finally, according to another embodiment, the at least partially U-shaped dies laterally displaceable portions of the side walls with Einlaufrundungen and move when closing the mold halves, the side walls of the upper die of the first mold half after the sliding portions of the side walls of the at least partially U-shaped dies of the second mold half after outside, the Einfädelungsprozess the U-legs of the at least partially U-shaped board in the O-forming can be facilitated to an at least partially closed hollow profile.

Schließlich können vorzugsweise auch noch weitere Bearbeitungsschritte in der erfindungsgemäßen Vorrichtung durchgeführt werden, um das zumindest teilweise geschlossene Hohlprofil herzustellen. Hier kann der Vorteil einer sehr genauen Positionierung der Platinen vor bzw. nach den Umformschritten ausgenutzt werden.Finally, it is also preferable to carry out further processing steps in the device according to the invention in order to produce the at least partially closed hollow profile. Here, the advantage of a very accurate positioning of the boards before or after the forming steps can be exploited.

Die Erfindung soll im Weiteren anhand von Ausführungsbeispielen in Verbindung mit der Zeichnung näher erläutert werden. Die Zeichnung zeigt in

Fig. 1 bis 9
in einer schematischen Schnittansicht eine erfindungsgemäße Vorrichtung in den verschiedenen Prozessschritten bei der Herstellung zumindest teilweise geschlossener Hohlprofile,
Fig. 10
in einer schematischen dreidimensionalen Darstellung eine erfindungsgemäße Vorrichtung mit einer Mehrzahl an paarweise angeordneten U-Stempel und Obergesenken in einer ersten Werkzeughälfte und
Fig. 11 und 12
eine schematische Draufsicht auf das Obergesenk der ersten Werkzeughälfte während des Einfädelns der Schenkel der zumindest teilweise U-förmigen Platine.
The invention will be explained in more detail below with reference to embodiments in conjunction with the drawings. The drawing shows in
Fig. 1 to 9
in a schematic sectional view of an inventive device in the various process steps in the Production of at least partially closed hollow profiles,
Fig. 10
in a schematic three-dimensional representation of a device according to the invention with a plurality of paired U-punch and top dies in a first mold half and
FIGS. 11 and 12
a schematic plan view of the upper die of the first mold half during the threading of the legs of the at least partially U-shaped board.

Die Figuren 1 bis 9 zeigen in einer schematischen Schnittansicht eine erfindungsgemäße Vorrichtung 1 zur Herstellung zumindest teilweise geschlossener Hohlprofile aus einer Platine 2, mit einem Werkzeug 3. Das Werkzeug 3 weist zwei Werkzeughälften 6, 8 auf, wobei in der ersten Werkzeughälfte 6 ein U-Stempel 4 und ein Obergesenk 5 vorgesehen ist. Die zweite Werkzeughälfte 8 weist zwei identische zumindest teilweise U-förmige Gesenke 7 auf, welche gemeinsam mit dem U-Stempel 4 und den Obergesenke 5 der ersten Werkzeughälfte rotationssymmetrisch zur Rotationsachse 9 angeordnet sind.The FIGS. 1 to 9 show in a schematic sectional view of an inventive device 1 for producing at least partially closed hollow sections of a board 2, with a tool 3. The tool 3 has two mold halves 6, 8, wherein in the first mold half 6, a U-punch 4 and an upper die 5 is provided. The second mold half 8 has two identical at least partially U-shaped dies 7, which are arranged rotationally symmetrical to the rotation axis 9 together with the U-punch 4 and the upper dies 5 of the first mold half.

Der U-Stempel 4 und das Obergesenk 5 stehen bei einer Schließbewegung des Werkzeugs 3 gleichzeitig in Eingriff mit beiden zumindest teilweise U-förmigen Gesenken 7 der zweiten Werkzeughälfte 8. Wie Figur 1 zeigt, sind außerdem Niederhalter 11 vorgesehen, über welche der Materialfluss der Platine während der U-Umformung gesteuert werden kann und welche die Platine 2 während der Umformung fixieren. Die Montageplatte 10, auf welcher sowohl der U-Stempel 4 als auch das Obergesenk 5 und die Niederhalter 11 der ersten Werkzeughälfte 6 angeordnet sind, ist drehbar um die Rotationsachse 9 gelagert.The U-punch 4 and the upper die 5 are at a closing movement of the tool 3 at the same time in engagement with two at least partially U-shaped dies 7 of the second mold half 8. How FIG. 1 shows, hold-down 11 are also provided, via which the material flow of the board during the U-forming can be controlled and which fix the board 2 during the deformation. The mounting plate 10, on which both the U-punch 4 and the upper die 5 and the hold-down 11 of the first mold half 6 are arranged, is rotatably mounted about the rotation axis 9.

In Figur 2 ist nun die erfindungsgemäße Vorrichtung in geschlossenem Zustand dargestellt. Der U-Stempel 4 formt die eingelegte erste Platine 2 zu einer zumindest teilweise U-förmigen Platine um, wobei die Niederhalter 11 den Materialfluss während der Umformung durch Einstellung einer entsprechenden Anpresskraft steuern. Nach dem Erreichen der Endposition öffnet sich das Werkzeug wieder, bis die Werkzeughälften 6, 8 gegeneinander verdreht werden können. Eine Rotation der ersten Werkzeughälfte 6, wie es im vorliegenden Ausführungsbeispiel dargestellt ist, um die Rotationsachse 9 ermöglicht die Positionierung des U-Stempels 4 oberhalb einer Platine 12, welche in dem zweiten zumindest teilweise U-förmigen Gesenk 7 der Werkzeughälfte 8 eingelegt worden ist. Darüber hinaus wird, wie in Figur 3 dargestellt, ein Stützkern 13 über eine nicht dargestellt Kernzugvorrichtung in die jetzt zumindest teilweise U-förmige umgeformte Platine 2 in dem ersten zumindest teilweise U-förmigen Gesenk der zweiten Werkzeughälfte 8 eingebracht. Anschließend erfolgt eine erneute Schließbewegung des Werkzeugs, wie in Figur 4 dargestellt ist.In FIG. 2 now the device according to the invention is shown in the closed state. The U-punch 4 converts the inserted first board 2 into an at least partially U-shaped board, wherein the hold-downs 11 control the flow of material during forming by setting a corresponding contact force. After reaching the end position, the tool opens again until the tool halves 6, 8 can be rotated against each other. A rotation of the first tool half 6, as shown in the present embodiment, about the axis of rotation 9 allows the positioning of the U-punch 4 above a board 12, which has been inserted in the second at least partially U-shaped die 7 of the mold half 8. In addition, as in FIG. 3 shown, a support core 13 via a Kernzugvorrichtung not shown in the now at least partially U-shaped formed plate 2 in the first at least partially U-shaped die of the second mold half 8 introduced. Subsequently, a renewed closing movement of the tool, as in FIG. 4 is shown.

Bei dieser Schließbewegung wird sowohl ein zumindest teilweise geschlossenes Hohlprofil 2 als auch eine zumindest teilweise U-förmige Platine 14 erzeugt. Dies ist der erste Schließhub des Werkzeugs, bei welchem ein fertig hergestelltes, teilweise geschlossenes Hohlprofil 2 hergestellt wird.During this closing movement, both an at least partially closed hollow profile 2 and an at least partially U-shaped circuit board 14 are produced. This is the first closing stroke of the tool in which a finished made, partially closed hollow section 2 is produced.

Figur 5 zeigt das Ausführungsbeispiel der Vorrichtung in geöffnetem Zustand. Das teilweise geschlossene Hohlprofil 2 kann aus dem geöffneten Werkzeug 3, wie in Figur 6 dargestellt, entnommen werden und eine neue Platine 15 in das frei werdende, zumindest teilweise U-förmige Gesenk 7 der zweiten Werkzeughälfte 8 eingelegt werden. Anschließend oder davor erfolgt erneut eine Rotation der ersten Werkzeughälfte 6 um die Rotationsachse 9, so dass wieder der Stempel 4 mit der Platine 15 und das Obergesenk 5 der ersten Werkzeughälfte 6 mit der zumindest teilweise U-förmigen Platine 14 in Eingriff stehen. Zuvor wurde auch hier in dem zumindest teilweise U-förmigen Gesenk 7 der zweiten Werkzeughälfte ein Stützkern 13 eingebracht. FIG. 5 shows the embodiment of the device in the open state. The partially closed hollow profile 2 can from the open tool 3, as in FIG. 6 are shown, removed and a new board 15 in the liberated, at least partially U-shaped die 7 of the second mold half 8 are inserted. Subsequently or before, the first mold half 6 is again rotated about the axis of rotation 9, so that again the punch 4 engages with the board 15 and the upper die 5 of the first mold half 6 engages with the at least partially U-shaped board 14. Previously, a support core 13 was introduced here in the at least partially U-shaped die 7 of the second mold half.

Das Ausführungsbeispiel der erfindungsgemäßen Vorrichtung nach dem nächsten Schließvorgang allerdings in geöffnetem Zustand zeigt Figur 8. Zu erkennen ist, dass die U-förmige Platine 14 in dem anderen, identischen U-förmigen Gesenk 7 zu einem fertigen, zumindest teilweise geschlossenes Hohlprofil 14 umgeformt wurde und entnommen werden kann. Anschließend wird das Gesenk 7 mit einer nächsten Platine 17 bestückt. Um den Produktionsvorgang fortzufahren wird die erste Werkzeughälfte 6 wiederum gegenüber der zweiten Werkzeughälfte 8 gedreht, so dass der U-Stempel 4 die neu eingelegte Platine 17 beim nächsten Schließvorgang zu einer zumindest teilweise U-förmigen Platine umformt, Fig. 9.However, the embodiment of the device according to the invention after the next closing operation, however, in the open state shows FIG. 8 , It can be seen that the U-shaped board 14 has been formed in the other, identical U-shaped die 7 to a finished, at least partially closed hollow section 14 and can be removed. Subsequently, the die 7 is equipped with a next board 17. In order to continue the production process, the first tool half 6 is again rotated relative to the second tool half 8, so that the U-punch 4 converts the newly inserted board 17 in the next closing operation to an at least partially U-shaped board, Fig. 9 ,

Aus der Beschreibung des dargestellten Ausführungsbeispiels wird deutlich, dass mit dem Ausführungsbeispiel der erfindungsgemäßen Vorrichtung mit jedem Arbeitshub ein fertig gestelltes, zumindest teilweise geschlossenes Hohlprofil hergestellt werden kann und damit die Taktzeiten zu deren Herstellung deutlich verringert werden kann.From the description of the illustrated embodiment, it is clear that with the embodiment of the Device according to the invention with each stroke a finished, at least partially closed hollow profile can be made and thus the cycle times for their production can be significantly reduced.

Um die Stückzahlen weiter zu erhöhen aber auch um weitere Bearbeitungsschritte zu integrieren, kann beispielsweise das in Figur 10 dargestellte Ausführungsbeispiel verwendet werden. In einer Vorrichtung sind hierzu zwei drehbar gelagerte Montageplatten 10' vorgesehen, welche jeweils einen U-Stempel 4', ein Obergesenk 5' und Niederhalter 11' in der ersten Werkzeughälfte 6' aufweisen. Die zweite Werkzeughälfte 8' umfasst insgesamt vier identische zumindest teilweise U-förmige Gesenke 7', welche zur U-O-Umformung genutzt werden. Zusätzlich sind in der Vorrichtung 1' aus Figur 10 Kernzugvorrichtungen 18' für jedes zumindest teilweise U-förmige Gesenk 7' der zweiten Werkzeughälfte 8' vorgesehen. Die in Figur 10 dargestellte Vorrichtung 1' zeichnet sich daher durch eine doppelt so hohe Kapazität wie die in den Figuren 1 bis 9 dargestellte Vorrichtung aus.To further increase the number of units but also to integrate further processing steps, for example, the in FIG. 10 illustrated embodiment can be used. In a device for this purpose, two rotatably mounted mounting plates 10 'are provided, each having a U-punch 4', an upper die 5 'and hold-down 11' in the first mold half 6 'have. The second tool half 8 'comprises a total of four identical at least partially U-shaped dies 7', which are used for UO-forming. In addition, in the device 1 'off FIG. 10 Kernzugvorrichtungen 18 'for each at least partially U-shaped die 7' of the second mold half 8 'is provided. In the FIG. 10 illustrated device 1 'is therefore characterized by a twice as high capacity as in the FIGS. 1 to 9 shown device.

In den Figuren 11 und 12 ist der Einfädelungsvorgang unter Verwendung der seitlich verschiebbaren Teilbereiche 20 der Seitenwände der zumindest teilweise U-förmigen Gesenke 7 bei der O-Umformung dargestellt. Das Obergesenk 5 weist Seitenwände 19 auf, welche die verschiebbaren Teilbereiche 20 der Seitenwände des zumindest teilweise U-förmigen Gesenks 7 der zweiten Werkzeughälfte nach außen unter zu Hilfenahme der Einlaufrundungen 21 verschieben, so dass die zumindest teilweise U-förmige Platine 2 in das Obergesenk 5 besonders sicher einfädelt. Die Einlaufrundungen 21 sorgen, zusammen mit der Höhe der Seitenwände der zumindest teilweise U-förmigen Gesenke 7 dafür, dass ein besonders prozesssicherer Einfädelungsprozess gelingt, da die Rückfederung der U-förmigen geformten Platine in dem Gesenk 7 gering ist. Denkbar ist aber auch, dass das nach außen Verschieben der Teilbereiche 20 der Seitenwände 19 zusätzlich aktiv unterstütz wird, um den Verschleiß an den Einlaufrundungen zu minimieren. Die Seitenwände des zumindest teilweise U-förmigen Gesenks 7 weisen hierzu eine Höhe von mindestens der Hälfte der maximalen, ausgerollten Seitenwandlänge des herzustellenden Hohlprofils, also eines Schenkels des zumindest teilweisen U-Profils auf. Insgesamt kann damit ein prozesssicheres Verfahren zur Herstellung zumindest teilweise geschlossener Hohlprofile mit geringen Taktzeiten und Investitionskosten zur Verfügung gestellt werden.In the FIGS. 11 and 12 the Einfädelungsvorgang is shown using the laterally displaceable portions 20 of the side walls of the at least partially U-shaped dies 7 in the O-forming. The upper die 5 has side walls 19, which displace the displaceable portions 20 of the side walls of the at least partially U-shaped die 7 of the second tool half outwards with the aid of the inlet curves 21, so that the at least partially U-shaped board 2 in the upper die. 5 threads particularly safe. The inlet curves 21 provide, together with the height of the side walls of the at least partially U-shaped Dies 7 for a particularly reliable threading process succeeds, since the springback of the U-shaped shaped board in the die 7 is low. It is also conceivable, however, that the outward displacement of the subregions 20 of the side walls 19 is additionally actively supported in order to minimize the wear on the inlet curves. For this purpose, the side walls of the at least partially U-shaped die 7 have a height of at least half of the maximum, rolled-out side wall length of the hollow profile to be produced, ie a leg of the at least partial U-profile. Overall, a process-reliable method for producing at least partially closed hollow sections with low cycle times and investment costs can thus be made available.

Claims (12)

  1. Device (1) for producing at least in part closed hollow profiles from a blank (2) by means of a U-O-forming with a tool (3) comprising at least a U-stamp (4) and at least an upper cavity (5) in a first tool half (6), characterised in that at least two identical at least in part U-shaped cavities (7) are provided in a second tool half (8), the U-stamp (4) and the upper cavity (5) of the first tool half (6) each mesh simultaneously when the tool (3) is closed with an at least in part U-shaped cavity (7), the at least one U-stamp (4) and the at least one upper cavity (5) of the first tool half (6) and the at least two at least in part U-shaped cavities (7) of the second tool half (8) are arranged in a rotationally symmetrical manner along a rotational axis (9) running in closing direction of the tool (3) and the first and the second tool halves (6, 8) are rotatable relative to one another about this rotational axis (9) such that rotating the first and/or the second tool half (6, 8) can mesh the U-stamp (4) and the upper cavity (5) with the first or the second at least in part U-shaped cavity (7), respectively.
  2. Device according to Claim 1, characterised in that the first or the second tool half (6, 8) is formed in a fixed manner, wherein the first or the second tool half (6, 8) being arranged on a mounting plate (10) which is rotatable about the rotational axis.
  3. Device according to either Claim 1 or Claim 2, characterised in that a core pulling device (18') is provided for each cavity (7') of the second tool half (8, 8').
  4. Device according to any one of Claims 1 to 3, characterised in that hold-down devices (11) are assigned to the U-stamp (4) in the first tool half (6).
  5. Device according to any one of Claims 1 to 4, characterised in that the at least in part U-shaped cavities (7, 7') of the second tool half (8, 8') show side walls, the height of which is at least half of the maximum, rolled out side wall length of the hollow profile to be produced.
  6. Device according to any one of Claims 1 to 5, characterised in that the side walls of the at least in part U-shaped cavities (7, 7') are displaceable at least in partial areas (20) in an outwards direction and these partial areas (20) have inflow curves (21).
  7. Device according to any one of Claims 1 to 6, characterised in that the first tool half (6') has a plurality of U-stamps (4') and upper cavities (5) arranged in pairs and in a rotationally symmetrical manner to a rotational axis, respectively and the second tool half (8') has an identical number of at least in part U-shaped cavities (7') which are arranged in a rotationally symmetrical manner to the respective rotation axis.
  8. Method for the production of an at least in part closed hollow profile using a device according to any one of Claims 1 to 7 with the following steps:
    - Insertion of a first level blank into a first at least in part U-shaped cavity of the second tool half,
    - Forming of the first blank into an at least in part U-shaped blank by closing the tool halves using the U-stamp of the first tool half,
    - Opening of the tool and rotation of the first and second tool halves against one another along a rotational axis running in the closing direction of the tool such that the U-stamp of the first tool half is positioned above the second at least in part U-shaped cavity of the second tool half and the upper cavity of the first tool half is positioned above the first at least in part U-shaped cavity of the second tool half,
    - Insertion of a second level blank into a second at least in part U-shaped cavity of the second tool half,
    - Closing of the tool halves and simultaneous forming of the in part U-shaped first blank into an at least in part closed hollow profile using the upper cavity of the first tool half and simultaneous forming of the second blank into an in part U-shaped blank using the U-stamp of the first tool half.
  9. Method according to Claim 8, characterised in that the first and/or the second tool half is rotated about the rotational axis following the opening of the tool.
  10. Method according to either Claim 8 or Claim 9, characterised in that before the forming of an at least in part U-shaped blank into an at least in part closed profile using a core pulling device, a support core is positioned in the respective at least in part U-shaped blank in the second tool half.
  11. Method according to any one of Claims 8 to 10, characterised in that the at least in part U-shaped cavities have laterally displaceable partial areas of the side walls and when the tool halves are closed the side walls of the upper cavity of the first tool half displace the displaceable partial areas of the side walls of the at least in part U-shaped cavities of the second tool half in an outwards direction.
  12. Method according to any one of Claims 8 to 11, characterised in that further processing steps are carried out in the device.
EP11755339.6A 2010-09-14 2011-09-12 Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time Not-in-force EP2616197B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010037534A DE102010037534A1 (en) 2010-09-14 2010-09-14 Apparatus and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time
PCT/EP2011/065726 WO2012034967A1 (en) 2010-09-14 2011-09-12 Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time

Publications (2)

Publication Number Publication Date
EP2616197A1 EP2616197A1 (en) 2013-07-24
EP2616197B1 true EP2616197B1 (en) 2014-03-12

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EP11755339.6A Not-in-force EP2616197B1 (en) 2010-09-14 2011-09-12 Device and method for producing at least partially closed hollow profiles with rotatable die halves and low cycle time

Country Status (8)

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US (1) US9993860B2 (en)
EP (1) EP2616197B1 (en)
JP (1) JP5530036B2 (en)
KR (1) KR101690707B1 (en)
CN (1) CN103153498B (en)
DE (1) DE102010037534A1 (en)
ES (1) ES2471090T3 (en)
WO (1) WO2012034967A1 (en)

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CN103736849B (en) * 2013-12-20 2016-08-17 张家港市隆旌汽车零部件有限公司 The diel group of harvester pick-up machine pawl
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EP3450041A1 (en) 2017-08-29 2019-03-06 Autotech Engineering Deutschland GmbH Method for producing a tubular hollow body from a blanked metallic sheet, and undercarriage or body components with a hollow body produced according to the method

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KR20130100287A (en) 2013-09-10
JP5530036B2 (en) 2014-06-25
US20130186165A1 (en) 2013-07-25
JP2013537112A (en) 2013-09-30
EP2616197A1 (en) 2013-07-24
ES2471090T3 (en) 2014-06-25
DE102010037534A1 (en) 2012-03-15
WO2012034967A1 (en) 2012-03-22
KR101690707B1 (en) 2016-12-28
CN103153498B (en) 2014-09-17
US9993860B2 (en) 2018-06-12
CN103153498A (en) 2013-06-12

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