EP1549447A1 - Procede et dispositif permettant d'assembler de maniere durable des composants chevauchants en forme de plaque - Google Patents

Procede et dispositif permettant d'assembler de maniere durable des composants chevauchants en forme de plaque

Info

Publication number
EP1549447A1
EP1549447A1 EP03753483A EP03753483A EP1549447A1 EP 1549447 A1 EP1549447 A1 EP 1549447A1 EP 03753483 A EP03753483 A EP 03753483A EP 03753483 A EP03753483 A EP 03753483A EP 1549447 A1 EP1549447 A1 EP 1549447A1
Authority
EP
European Patent Office
Prior art keywords
stamp
tool
components
counter
movement
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
EP03753483A
Other languages
German (de)
English (en)
Other versions
EP1549447B1 (fr
Inventor
Stephan Dietrich
Reinhard Mauermann
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP1549447A1 publication Critical patent/EP1549447A1/fr
Application granted granted Critical
Publication of EP1549447B1 publication Critical patent/EP1549447B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49924—Joining by deforming of parallel side-by-side elongated members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53039—Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53061—Responsive to work or work-related machine element
    • Y10T29/53065—Responsive to work or work-related machine element with means to fasten by deformation

Definitions

  • the present invention relates to a method for permanently connecting overlapping, plate-shaped components, in particular sheet metal, by forming an undercut between the components.
  • the invention relates to a device for the permanent connection of overlapping, plate-shaped components, in particular sheet metal, by forming an undercut between the components, with a stamping tool that can be moved along a main working direction towards and away from a counter tool.
  • an overlap area of the two or more components to be connected to one another is arranged between a stamping tool and a counter-tool (die).
  • This stamping tool is then pressed directly into the joining area of the (two) components with high force, as a result of which both components are first deep-drawn into a recess formed in the die in the area of the stamping attack, and the base area of the deep-drawn surface parts is then squeezed.
  • the die is designed in such a way that undercuts between the components can form when the bottom area of the deep-drawn surface parts is squeezed.
  • the methods used are differentiated according to the different embodiments of the respective matrices.
  • rigid one-part matrices for example from DE 3532 900 A1, DE 36 13324 A1 or DE 19929 375 A1.
  • rigid multi-part matrices for example from DE 3923 18 A1, movable multi-part matrices, for example from DE 31 06 313 A1 or DE 37 13 083 A1 and mixed forms, for example from DE 101 16 736 A1, are known.
  • contoured die as a counter tool.
  • the contouring enables deep drawing or penetration of the components to be connected locally by means of a recess into which the material of the components can be molded.
  • the contouring allows a material flow in the radial direction due to its specific shape or the mobility of individual parts of the die, which leads to the formation of the undercut.
  • the joining devices must be designed to be very rigid so that the high forces during the joining process and the resulting bending on the joining devices do not lead to the occurrence of quality-reducing offsets of the tools relative to one another.
  • the invention is therefore based on the object of providing a method for mechanically connecting plate-shaped components which are at least partially arranged one above the other, with the aid of which secure and high-quality connections of components can be produced more cost-effectively and reliably than previously. Furthermore, the invention is based on the object of improving a device of the type mentioned at the outset in such a way that the requirements for the manufacturing tolerances and for the alignment of the tools of the device can be reduced, so as to increase process reliability.
  • This object is achieved according to the invention in a method for the permanent connection of overlapping, plate-shaped components, in particular sheet metal, by forming an undercut between the components in one working stroke with the individual steps: arranging the components to be connected between a stamp projection of a stamping tool and a support surface a counter tool, pressing the stamp projection into the components to be connected, forming a temporary elevation on the side of the components facing the counter tool and separating regions thereof outside an area of influence of the stamp projection from a contact surface of the counter tool, and forming an undercut of the components by further reducing one Soil thickness in the survey.
  • the object for a device of the type mentioned at the outset is achieved according to the invention in that the counter tool is essentially flat on its side facing the stamp tool.
  • the axial alignment of the anvil and punch with respect to one another is of secondary importance in contrast to the conventional clinching method.
  • the necessary manufacturing accuracy for tools and machines is reduced, as is the time required to set up the joining devices. Offsets that occur during the joining process due to the high forces between the anvil and the punch have little or no influence on the formation of the connection.
  • the process reliability of the method increases because the counter tool is subject to less wear due to its flat shape, and the quality is independent of an exact alignment of the tools to one another.
  • connection created has a geometrical undercut area, so that a pretreatment for activating the surface of the joining partners to be joined together is not necessary.
  • connection similar to a clinch connection can thus be produced in the present invention.
  • the connection is not formed by a deep-drawing process with subsequent squeezing of the bottom area of the deep-drawn surface parts, which require a die with a recess, but by a backward extrusion process, followed by a squeezing of the material remaining under a punch face , the process can be combined with a simultaneous emergence of the neck area.
  • a further stamp movement can preferably be carried out in the direction of flattening the connection area of the two the workpieces. Attention must be paid to the corresponding force limitation for tool safety.
  • a wobbling movement of the die to realize the formation of the undercut is not necessary. However, it can be overlaid to reduce the joining forces. Such a superimposed movement can have a circular or a rosette shape.
  • an additional cyclic force can be superimposed on the active axial feed movement.
  • both overlays are coordinated so that the wobble direction of the stamp and the cyclical additional stamp force are clearly dependent on each other.
  • a specific wobble direction of the punch preferably when the wobble angle increases to the maximum wobble angle ⁇ in the wobble direction outwards, is assigned the maximum superimposition force in order to achieve an optimal material flow.
  • the method according to the invention includes a step of moving a hold-down device towards the counter-tool, and as a result, a defined holding force is exerted on the components during the plastic deformation. Furthermore, an additional step of stabilizing the components by means of a counterholder is conceivable, by means of which the components are urged towards the stamping tool against the direction of movement thereof.
  • the movement of the stamp projection on the counter tool is superimposed with a wobble movement at least during part of the stamp path.
  • the wobble can be circular or rosette-shaped.
  • the punch, the hold-down device and / or the counter-holder be hydraulically, pneumatically, magnetically, mechanically or piezoelectrically acted upon, the application of force preferably taking place by means of one or more pulses.
  • the application of force to the hold-down device is controlled and increases particularly at a defined point in the movement of the punch. This stops the movement of the components directed against the direction of movement of the stamp and vice versa.
  • a tool movement is preferably carried out in the direction of flattening the elevation.
  • a stamping tool that points towards and from a counter tool along a main working direction is movable away, with the counter tool on its side facing the stamp tool, at least in the entire area of the stamp tool, in particular a stamp end face and a stamp shoulder, preferably also a hold-down device, being essentially flat. It is desirable here that a main body of the stamping tool has a stamped shoulder on its side facing the counter-tool, from which a stamped shoulder protrudes.
  • At least one main body of the stamping tool is surrounded by a hold-down which is movable relative to the main body.
  • the main body is preferably relative to the hold-down device by means of a prestressing element, in particular re a hold-down spring, biased against a feed direction of the stamping tool.
  • the main body of the stamping tool can be moved in a wobbling motion at least during part of its movement towards the counter tool.
  • a stamp face arranged on the stamp shoulder is essentially flat, in particular flat, slightly spherical or slightly conical.
  • the stamp projection can be designed to be slightly tapered towards the stamp end face.
  • a stamp end face arranged on the stamp shoulder is essentially at right angles to a main working direction or slightly inclined to it. It is also conceivable that a transition from the stamp face to a lateral surface of the stamp projection is designed in the form of a radius or a trailing curve. It is also possible that a transition from the stamp face to a lateral surface of the stamp projection is in the form of a chamfer or a double chamfer.
  • the shape element forming the transition from the stamp face to the lateral surface is less than 0.2 millimeters.
  • the counter tool is preferably designed as a one-piece anvil, its side facing the stamp tool being designed as an essentially flat, in particular flat, slightly convex or slightly conical contact surface for the components.
  • the contact surface of the counter tool is larger than the elevation formed on the components, preferably larger than the projection surface of the stamp tool facing it, but in particular of the stamp projection and the stamp shoulder, which can also be formed by the hold-down device. It is desirable that the dimensions of the contact surface of the counter tool be larger or substantially equal to the outer dimensions of the hold-down device.
  • Both an area of the support surface of the counter tool lying opposite the stamp end face and an area of the support surface of the counter tool opposite the stamp shoulder are preferably essentially on one Main working direction vertical plane.
  • the contact surface is formed free of shoulders or recesses at least in the region of the projection of the stamp face and the stamp shoulder, preferably also of the hold-down device.
  • the anvil of the counter tool is at least partially surrounded by a counter holder which is movable relative to the anvil in the main working direction.
  • This counterholder can be acted upon pneumatically, hydraulically, magnetically, mechanically and / or piezoelectrically with a force which is directed counter to a punch and / or hold-down force.
  • the main body of the stamping tool, the hold-down device, the anvil and / or the counter-holder have circular or annular cross sections.
  • the main body of the stamping tool, the hold-down device, the anvil and / or the counter-holder have a cross-section deviating from a circular shape, in particular an angular cross-section.
  • FIG. 1a an initial state
  • FIG. 4 shows an alternative embodiment of the device according to the invention with a stamping tool with a tumbling stamp when the method according to the invention is carried out in an intermediate state.
  • FIGS. 1a) to 1c A first exemplary embodiment of the invention will now be explained in more detail with reference to FIGS. 1a) to 1c).
  • the directions of movement and the relative arrangements of the components are denoted by the terms “above” and “below”, as shown in the figures; it goes without saying that any other spatial arrangement is possible accordingly.
  • an upper component 1 is connected to a lower component 2.
  • the two components 1, 2 to be connected to one another are arranged on a substantially flat contact surface 3 c of the counter tool 3, preferably a one-piece anvil 3 b.
  • a stamping tool 4 with a main body 4e and a hold-down 5 is then moved in the direction of the components 1, 2 along a main working direction A towards the counter tool 3.
  • a defined holding force is exerted on the components 1, 2 by means of raul, pneumatically, piezoelectrically, magnetically or by springs.
  • a stamp projection 4b is formed on the (lower) side of the main body 4e facing the counter tool 3, the cross section of which is preferably smaller than the cross section of the remaining (upper) part of the main body 4e.
  • a stamp shoulder 4a is formed at the transition, which is preferably flat and orthogonal or flat and slightly (e.g. up to approximately 6 °) inclined to a main working direction A in one plane.
  • the punch projection 4b is then pressed into the components 1, 2 hydraulically, pneumatically, magnetically, piezoelectrically or mechanically with high force.
  • the foremost (lowermost) section of the stamp projection 4b which is referred to as the stamp end face 4c, penetrates through the cross section of the upper component 1 into the component 2, but without penetrating one of the components, so that in front of the stamp end face during the entire process material of all components to be connected remains.
  • the respective material of the components 1, 2 to be connected is displaced locally and first moves radially outwards and then in a controlled manner upward from the holding-down device 5 and / or from the stamp shoulder 4a against the direction of movement of the stamp main body 4e.
  • the components 1, 2 are lifted off the support surface 3c of the counter tool 3 (anvil 3b). By moving the sections of the components 1, 2, which are not clamped between the stamp end face 4c and the bearing surface 3c of the counter tool 3, upward (towards the stamp tool 4) from the pushed-away material of the components, one is formed in the region of the stamp projection 4b Elevation 2a out.
  • the ratio of the cross sections or diameters of stamp projection 4b and stamp shoulder 4a can be selected depending on the strength of the materials to be connected and the joining force such that no lasting impression of the stamp shoulder 4a is caused in the upper component 1.
  • the stamp projection 4b can be slightly conical in order to ensure that the stamp projection can be simply pulled out of the components 1, 2 which are connected to one another.
  • the stamp end face 4c arranged on the stamp projection 4b is preferably flat, in particular flat, or else slightly spherical or slightly conical.
  • a transition from the stamp face 4c to a lateral surface 4d of the stamp projection 4b is formed in the form of a radius or a trailing curve; however, the transition from the stamp face 4c to the lateral surface 4d of the stamp projection 4b can also be designed in the form of a chamfer or a double chamfer, in any case preferably the shaped element forming the transition from the stamp face 4c to the lateral surface 4d is less than 0.2 millimeters.
  • the counter tool 3 is designed as a one-piece anvil 3b, the side facing the stamping tool 4 as a substantially flat, in particular flat, but also as a slightly spherical or slightly conical contact surface 3c for the components 1, 2 is trained.
  • the contact surface 3c of the counter tool 3 is larger than the diameter of an elevation 2a, so that the material of the components 1, 2 cannot be pushed past to the side next to the contact surface.
  • the dimensions of the contact surface 3c of the counter tool 3 are larger or substantially equal to the outer dimensions of the hold-down device 5.
  • a region of the bearing surface 3c of the counter-tool 3 opposite the stamp end face 4c and also a region of the bearing surface 3c of the counter-tool 3 opposite the stamp shoulder 4a lie essentially on a plane perpendicular to the main working direction A, although a slight curvature of the entire surface up or down is conceivable is.
  • the contact surface 3c is free of shoulders, recesses, depressions, depressions or the like.
  • the main body 4e of the stamping tool 4, the hold-down 5, and / or the anvil 3b have circular or annular cross-sections, as well as that the main body 4e of the stamping tool 4, the hold-down 5, and / or the Anvil 3b has a cross-section deviating from a circular shape, in particular an angular cross-section.
  • the individual components are preferably matched to one another, but are also designed to be movable independently of one another.
  • FIGS. 2a) to 2c A second exemplary embodiment of the invention is described below with reference to FIGS. 2a) to 2c). Parts and components that correspond to those described above have the same reference numerals and will only be described again to the extent necessary.
  • FIG. 2a A device for the permanent connection of two or more flat components can be seen in another embodiment in FIG. 2.
  • the (two) components 1, 2 to be connected to one another rest on the flat counter tool 3, here the anvil 3b.
  • a stamping tool 4 is moved hydraulically, pneumatically, magnetically, piezoelectrically or mechanically with high force in the direction of the components 1, 2.
  • the stamp tool 4 has a stamp main body 4e, a hold-down 5, a stamp carrier 6, a hold-down sleeve 7 and a hold-down spring 8.
  • the hold-down 5 is placed on the components 1, 2 to be connected.
  • the hold-down spring 8 is compressed here. Then, the end face 4c of the stamp protrusion 4b of the stamp main body 4e comes into contact with the upper member 1.
  • the stamp projection 4b is now fully or partially pressed into the components 1, 2.
  • the material of the components 1, 2 to be connected is displaced locally and first moves radially outwards and then in a controlled manner from the holding-down device 5 upward against the direction of movement of the stamping tool 4.
  • Components 1, 2 are lifted off the anvil 3b. Only in the area of the emerging elevation 2a on the underside of the lower component 2 is there still contact between the lower component 2 and the anvil 3b. 2b shows an intermediate state in which this can be clearly seen.
  • an undercut 1a is formed.
  • the ratio of the dimensions (or diameter) of the punch face 4c and the underside of the hold-down 5 can be selected depending on the strength of the materials to be connected and the joining force so that no lasting impression of the hold-down 5 is caused in the upper component 1.
  • FIGS. 3a) to 3d A third exemplary embodiment can be seen in FIGS. 3a) to 3d). Parts and components that correspond to those described above have the same reference numerals and will only be described again to the extent necessary.
  • the (two) components 1, 2 to be connected to one another rest on a preferably spring-loaded or otherwise pressurized counter-holder 3a (outer ring) of an anvil 3b of the counter-tool 3.
  • the hold-down 5 and the main body 4e of the stamping tool 4 are moved in the direction of the components 1, 2.
  • the hold-down 5 is used hydraulically, pneumatically, piezoelectrically, magnetically, mechanically or in another way, in particular e.g. by springs, a defined force on the components 1, 2 and on the counter-holder 3a.
  • the force with which the hold-down device 5 is acted upon is preferably selected to be greater than the counteracting force of the counter-holder 3a.
  • the counter-holder 3a is pushed back until the components 1, 2 to be connected are placed on the anvil 3b.
  • the stamp projection 4b is then, as described above, pressed into the components 1, 2 with high force.
  • the material of the components 1, 2 to be connected is displaced locally and moves first radially outwards and then controlled by the hold-down device 5 as well as by the counter-holder 3a upward against the direction of movement of the stamping tool 4. This results in the components 1, 2 being lifted off the anvil 3b.
  • the material moving in opposition to the punch movement is no longer prevented from moving by the entire holding-down force, but only by the difference in the forces acting on the holding-down device 5 and the counter-holding device 3a.
  • the counter-holder 3a has a circular or circular cross-section, as well as that the counter-holder 3a has a cross-section that deviates from a circular shape, in particular an angular cross-section.
  • the individual components main body 4e of the stamping tool 4, hold-down 5, anvil 3b and counter-holder 3a
  • FIG. 3c A further intermediate state is shown in FIG. 3c.
  • the material of the upper component 1 has contact with the shoulder 4a of the stamp main body 4e, the further movement of the material of the components to be connected is prevented in the opposite direction to the stamp movement.
  • the elevation 2a formed is therefore reduced in size when the stamping tool 4 is further advanced, and the material still located under the end face 4c of the stamping projection 4b must flow radially outward.
  • an undercut 1a is formed.
  • the joined components 1, 2 are easily stripped from the punch projection 4b after the joining process when the tools 3, 4 are moved apart.
  • the ratio of the cross-sections (diameter) of the stamp face 4c and the stamp set 4 can, depending on the strength of the materials to be connected and the joining force, again be chosen such that no permanent impression of the stamp shoulder 4a in the upper component 1 is caused.
  • stamp main body 4e of the stamping tool 4 can also have a wobble movement with a maximum wobble angle ⁇ between the main working direction A and an axis B of the stamp main body 4e superimposed on it to reduce the force.
  • the force of the holding-down device 5 is dimensioned such that a deflection of the components 1, 2 to be connected or a gap formation between the two components 1, 2 is largely avoided, but at the same time a formation of the elevation 2a and thus a movement of the components 1, 2 opposite to the axial movement of the main stamp body 4e is made possible.
  • a counter-holder 3a as shown in the third exemplary embodiment, can be provided for this.
  • the ratio of the diameter of the stamp end face 4c and stamp shoulder 4a can in turn be selected depending on the strength of the materials to be connected and the joining force such that no permanent impression of the stamp shoulder 4a is caused in the upper component 1.
  • the counter tool can also or exclusively be designed as a moving component.
  • the arrangement of the tools in the room is also arbitrary. It is also conceivable to effect a plurality of connections at the same time.
  • the geometric contour of the tools and the joints can essentially be selected as desired.
  • All elastically deformable materials in particular sheets and plastics, are conceivable as the material for the components to be joined.
  • the individual components can also consist of different materials.

Abstract

L'invention concerne un procédé permettant d'assembler de manière durable des composants chevauchants en forme de plaque, en particulier des tôles, par formation d'une contre-dépouille entre lesdits composants au moyen d'un processus de formage. L'objectif de cette invention est en particulier d'accroître la sécurité de ce procédé et d'augmenter la fiabilité des assemblages durables effectués. A cet effet, le procédé selon l'invention comprend les étapes consistant à : disposer les composants à assembler entre une partie proéminente d'un outil de poinçonnage et une surface d'appui d'un contre-outil ; former une structure saillante temporaire sur la face des composants qui est orientée vers le contre-outil, par pression de la partie proéminente de l'outil de poinçonnage dans les composants à assembler, contre ladite surface d'appui, au moins jusqu'à ce que les composants se détachent de la surface d'appui à l'extérieur de la structure saillante en formation ; et former une contre-dépouille dans les composants par aplatissement de ladite structure saillante entre l'outil de poinçonnage et le contre-outil, par rapprochement supplémentaire de l'outil de poinçonnage vers le contre-outil. La présente invention concerne en outre un dispositif permettant d'exécuter ledit procédé.
EP03753483A 2002-09-30 2003-09-30 Procede et dispositif permettant d'assembler de maniere durable des composants chevauchants en forme de plaque Expired - Fee Related EP1549447B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10245604A DE10245604A1 (de) 2002-09-30 2002-09-30 Verfahren und Vorrichtung zum dauerhaften Verbinden von einander überlappenden, plattenförmigen Bauteilen
DE10245604 2002-09-30
PCT/EP2003/010843 WO2004030844A1 (fr) 2002-09-30 2003-09-30 Procede et dispositif permettant d'assembler de maniere durable des composants chevauchants en forme de plaque

Publications (2)

Publication Number Publication Date
EP1549447A1 true EP1549447A1 (fr) 2005-07-06
EP1549447B1 EP1549447B1 (fr) 2007-01-24

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EP03753483A Expired - Fee Related EP1549447B1 (fr) 2002-09-30 2003-09-30 Procede et dispositif permettant d'assembler de maniere durable des composants chevauchants en forme de plaque

Country Status (5)

Country Link
US (1) US20050229378A1 (fr)
EP (1) EP1549447B1 (fr)
AU (1) AU2003271664A1 (fr)
DE (2) DE10245604A1 (fr)
WO (1) WO2004030844A1 (fr)

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AU2003271664A1 (en) 2004-04-23
DE10245604A1 (de) 2004-04-15
WO2004030844A1 (fr) 2004-04-15
EP1549447B1 (fr) 2007-01-24
DE50306401D1 (de) 2007-03-15
US20050229378A1 (en) 2005-10-20

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