EP4329957A1 - Device for crimping edges of metal sheets, and associated crimping method - Google Patents

Device for crimping edges of metal sheets, and associated crimping method

Info

Publication number
EP4329957A1
EP4329957A1 EP22713982.1A EP22713982A EP4329957A1 EP 4329957 A1 EP4329957 A1 EP 4329957A1 EP 22713982 A EP22713982 A EP 22713982A EP 4329957 A1 EP4329957 A1 EP 4329957A1
Authority
EP
European Patent Office
Prior art keywords
crimping
edges
support
roller
metal sheets
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.)
Pending
Application number
EP22713982.1A
Other languages
German (de)
French (fr)
Inventor
Jean Marie COQUET
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.)
Stellantis Auto SAS
Original Assignee
Stellantis Auto SAS
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 Stellantis Auto SAS filed Critical Stellantis Auto SAS
Publication of EP4329957A1 publication Critical patent/EP4329957A1/en
Pending 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
    • B21D39/02—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 by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—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 by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge

Definitions

  • This application relates to the field of tools for shaping and assembling sheet metal, in particular motor vehicle openings.
  • the present application relates more particularly to a device for crimping metal sheet edges by folding one of said edges onto another of said edges, as well as a method for crimping metal sheet edges by folding one of said edges onto another. of said edges.
  • the panels to be assembled are arranged superimposed on a die and the robotic arm moves the crimping tool along the edges to be crimped in order to fold and apply the edge of the first panel to an edge of the second panel in order to assemble them and subsequently assemble the panels together.
  • a crimping blade also called a "ski"
  • the friction of the crimping blade against the edges of the sheets to be crimped is significant and needs to be included in a force recovery matrix.
  • a disadvantage of the current method of crimping using a blade is that the lateral crimping reaction forces are taken up in the die and the articulated arm of the robot, thus causing the robotic arm to bend.
  • the robotic arm carrying the crimping tool rests on the die in order to follow the edges of the part to be crimped.
  • a problem then arises when the dimensions of the part vary slightly with respect to the theoretical dimensions. Indeed, since the robotic arm cannot adjust the position of its crimping tool to the dimensions of the part, the crimping operation may be poorly performed, leading to assembly defects.
  • An object of the invention is in particular to correct all or part of the drawbacks of the prior art by proposing a solution making it possible to crimp the edges of metal sheets by dispensing with the use of a force absorption die.
  • the subject of the invention is a device for crimping the edges of metal sheets by folding one of said edges onto another of said edges, comprising:
  • the crimping blade comprising a crimping twist having a direction of work
  • the crimping device being remarkable in that it further comprises:
  • At least one roller arranged on the support and configured to contact one of the metal sheet edges so as to take up a bending force exerted by the crimping blade during movement in the working direction.
  • the at least one roller has a contact surface with the edge of metal sheets which is opposite to the crimping twist at a zone end of said crimping twist in the working direction, so that the force take-up is maximum at the end of bending.
  • the crimping twist comprises a transverse profile with respect to the direction of work, presenting a variation of inclination along a total extent of the crimping twist which is between 120° and 180°. ° .
  • the at least one roller is mounted adjustable relative to the support in a direction perpendicular to an axis of rotation of said at least one roller.
  • the adjustable mounting of the at least one roller with respect to the support is so as to be able to vary the distance between a contact surface of said at least one roller with the edge of metal sheets and the twist crimping.
  • the at least one roller comprises a hub engaging with the support with play in the direction of adjustment, compensated by inserting at least one shim between said hub and said support .
  • the hub comprises a recess engaging with a protuberance of the support, the at least one shim being placed between two opposite faces of the recess and of the protuberance, respectively, said two faces and said at least one wedge being perpendicular to the direction of adjustment and located on the side of the crimping twist with respect to the protuberance of the support.
  • the at least one roller comprises a plate covering the recess and fixed to the hub and to the protuberance of the support.
  • Another object of the invention is a method for crimping edges of metal sheets, comprising an action of bending one of the edges of metal sheets onto another of said edges of metal sheets by relative movement of a crimping device along edges of metal sheets, the method being remarkable in that the crimping device is according to the invention and in that during the bending action, the edge subject to bending is contacted by the at least one roller and free support against a matrix.
  • the metal sheets form a roof or an opening of a motor vehicle and the edges of the metal sheets delimit an opening in said roof or opening.
  • FIG 1 represents a force recovery matrix known from the prior art
  • FIG 2 shows an exemplary embodiment of a crimping device according to the invention
  • FIG 3 shows an exemplary embodiment of a crimping device according to the invention
  • FIG 4 illustrates an operation for crimping sheet metal edges according to the invention
  • the crimping of the edges of metal sheets is obtained by folding a first edge of the sheets against a second edge of the sheets.
  • sheet edge will designate the first sheet edge, subject to bending, which is folded against the second edge at the end of the crimping action, the second sheet edge on which the first edge is bent during the crimping action as well as the zone bordering the first edge of the sheets before crimping and which forms a new edge after the crimping action.
  • FIG. 1 represents an exemplary embodiment of a matrix M known from the prior art.
  • Metal sheets whose edges 31, 32 are intended to be crimped together, are superimposed on the matrix M. These sheets can form, for example, a roof or a motor vehicle opening and the edges 31, 32 of sheets delimit an opening in the roof or the opening.
  • the matrix M comprises a removable part M1. Part M1 forms a force recovery matrix. The fact that this part is mobile or removable makes it easier to extract the part after crimping. Indeed, as explained above, during crimping, the friction of the twist of the crimping blade against the edges 31, 32 of metal sheets generates significant forces making the crimped part difficult to extract due to the lateral forces of reaction to the crimping taken up in the matrix. In figure 1, the lateral forces are represented by an arrow E.
  • FIGS. 2 and 3 represent embodiments of a device 10 for crimping the edges of metal sheets according to the invention.
  • the device 10 for crimping one of said edges 31 onto another of said edges 32 comprises a support 11 and at least one crimping blade 12 placed on the support.
  • the crimping blade 12 is configured to crimp the edges 31, 32 of metal sheets by progressive folding during the movement of the crimping device 10 in the working direction, from one of said edges to another of said edges.
  • a crimping blade 12 makes it possible to perform a crimping action in a single pass, thus reducing the manufacturing cycle.
  • the crimping blade 12 comprises a contact surface with the edge of the sheets during their crimping and extends along a twisted profile. Subsequently, this contact surface of the crimping blade 12 with the edge 31 of sheet metal will be called “crimping twist”.
  • the profile of the crimping auger 13 is configured to bend and fold the edge 31 of sheet metal over the other edge 32 of sheet metal when moving the crimping blade 12 along the edge of said metal sheets to be crimped.
  • the folding of the edge 31 is obtained by friction of the crimping twist 13 against the edge 31 of sheet metal.
  • the crimping auger 13 comprises a transverse profile, with respect to the direction of work, presenting a variation in inclination along a total extent of the crimping auger which is between 120° and 180°.
  • a profile makes it possible to crimp the edges 31, 32 of metal sheets regardless of the value of the angle formed by the edge before crimping and the proximal zone of this edge 32 against which this edge 31 is folded down. outcome of the crimping action.
  • the working direction of a crimping auger 13 is understood to mean the direction along which the crimping auger 13 is moved so that it can fold the edge 31 of one sheet over the edge 32 of the other sheet during the crimping operation of said edges 31, 32 of sheets.
  • the crimping device 10 also comprises at least one roller 14 arranged on the support 11.
  • the at least one roller 14 is configured to come into contact with the edge 31 of the sheet metal to be crimped during the crimping operation. .
  • the function of at least one roller 14 is to take up the bending force exerted by the crimping blade 12 during its movement, in the working direction, along the edge to be crimped.
  • the fact that the reaction to the force is taken up by the at least one roller 14 rather than by a force take-up die makes it possible to reduce the tooling costs since there is no longer any need for add a removable part to the sheet metal support.
  • This solution also makes it possible to simplify the production of the sheet support on which are stacked the bodywork elements whose edges are intended to be crimped.
  • the roller 14 is a cylinder, for example, metallic mounted rotatably on the support 11 around its axis of rotation.
  • the roller can be a ball or roller bearing, a cylinder mounted on such bearings or any other equivalent device.
  • the roller 14 may correspond to several cylinders stacked so as to increase the contact surface 15 of the roller 14. In this embodiment, the contact surface 15 of the roller 14 corresponds to its running zone.
  • the crimping device 10 comprises several rollers 14 of which at least two axes of rotation have different directions, for example, in order to take up forces in several directions.
  • the contact surface 15 of the roller 14 is opposite the crimping twist 13 at a final zone of the twist 12 in its working direction, so that the force take-up is maximum at the end. folding.
  • final zone of the crimping twist 13 is understood to mean the zone of the twist through which the sheet edge 31 to be bent escapes on the other sheet edge 32 as a result of the displacement of the crimping blade 12 along the edges 31, 32 crimp.
  • the roller 14 is mounted adjustable relative to the support 11 in the direction of the lateral force, that is to say in a direction perpendicular to the axis of rotation of said at least one roller.
  • This embodiment thus makes it possible to vary the distance 21 between the contact surface 15 of the at least one roller 14 and the crimping twist 13.
  • this makes it possible, for example, to adapt the distance 21 between the twist crimping 13 and the roller 14 depending on the thickness of the edges 31, 32 of the sheets to be crimped.
  • the roller 14 comprises a hub 22 engaging with the support 11 with play in the direction of adjustment.
  • the hub 22 of the roller 14 comprises an oblong hole 16 into which is inserted a means for fixing the roller 14 to the support 11.
  • a means for fixing the roller 14 to the support 11. This may be a screw as illustrated in FIG. or any other equivalent means making it possible to temporarily fix the roller 14 on the support 11.
  • the play 21 between the crimping twist 13 and the contact surface 15 of the roller 14 can be modified by loosening the hub fixing means and moving the roller 14 in the direction of the lateral force, perpendicular to the axis of rotation of the roller 14.
  • the play 21 in the direction of adjustment is compensated by inserting one or more shims 23 between the hub 22 and the protuberance 24 of the support 11.
  • the assembly of the shims thickness 23 between the support and the hub 22 prevents any movement of the hub 22 relative to the support 11 after adjustment of the distance 21 between the crimping twist 13 and the contact surface 15 of the roller 14.
  • FIG. 3 represents an embodiment in which the support 11 of the crimping device 10 comprises a protuberance 24.
  • the roller 14, for its part, comprises a recess in its hub 22 arranged to engage with the protuberance 24 of the support 11. Adjusting the clearance 21 between the auger 13 and the contact surface 15 of the roller 14 is provided by at least one shim 23 disposed between two opposite faces of the recess and the protrusion 24, located on the side of the crimping swirl 13 with respect to the protuberance 24 of the support 11.
  • the force reaction is ensured by the roller 14 formed of two bearings stacked along their axis of rotation.
  • the two opposite faces of the recess of the hub and of the protrusion 24 of the support 11 are oriented perpendicular to the direction of adjustment.
  • the main faces of the shims 23 are oriented perpendicular to the direction of adjustment.
  • the wedges 23 can be of the same thickness or of different thicknesses. According to one embodiment, the shims 23 are inserted on each side of the protuberance 24 between two opposite faces of the recess and of the protuberance 24.
  • At least one roller 14 of the crimping device 10 comprises a plate 17 covering the recess of its hub 22.
  • the plate 17 is fixed to the hub and/or to the protrusion 24, allowing thus ensuring the maintenance of the shims 23 inside the recess.
  • the plate 17 comprises an oblong hole 16 into which is inserted the means for fixing the hub 22 of said at least one roller 14 on support 11.
  • the adjustment of the distance 21 between the twist 13 and the contact surface 15 of the roller 14 can be carried out by removing the plate 17 and modifying the arrangement of the wedges 23 between the opposite faces of the protuberance 24 and the recess or by modifying the thickness of the shims 23.
  • the crimping of one of the edges of the metal sheets on another edge of the sheets is carried out by a bending action during a relative movement of the crimping device along the edges 31, 32 of the metal sheets.
  • the edge 31 subject to bending is in contact with the roller or rollers 14 of the crimping device 10 without resting against a force-absorbing die.
  • the crimping device 10 is intended to be fixed on the head of an articulated arm of an assembly robot.
  • the crimping action is performed by moving the crimping device using the robotic arm along the edges 31, 32 of metal sheets to be crimped.
  • this solution makes it possible to improve the positioning precision of the crimping blade 12 with respect to the edges 31, 32 of the sheets to be crimped.
  • the quality of the crimped elements is thus improved thanks to the adaptability of the trajectory of the crimping device 10.
  • the crimping head is equipped with a presser 33 as illustrated in the Figure 4.
  • the presser 33 is configured to hold the edges 31, 32 of sheets in position during the crimping action to prevent them from moving during their assembly.
  • the crimping device 10 according to the invention is fixed with respect to the ground.
  • the crimping device 10 can, for example, be fixed to a support or to a crimping head fixed to the ground.
  • a robotic arm presents the edges 31, 32 of sheets to be crimped in the crimping device 10 according to the invention, between the contact surface 15 of the roller 14 and the crimping blade 12 then moves the metal sheets along their edges 31, 32 so as to assemble them together by bending.
  • this solution also makes it possible to increase the flexibility of the crimping islands, thus limiting investments, and to reduce floor space.
  • the invention can be implemented, for example, in the automotive field.
  • the metal sheets can, for example, form a roof or an opening of a motor vehicle and the edges 31, 32 of the sheets form an opening in said roof or said opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention relates to a device (10) for crimping edges of metal sheets by folding one of the edges (31) onto another of the edges (32). The crimping device (10) comprises a support (11) and a crimping blade (12) arranged on the support (11), the crimping blade (12) comprising a crimping twist (13) having a working direction. The crimping device (10) further comprises at least one roller (14) arranged on the support (11) and configured to contact the edge (31) of metal sheets so as to react a folding force exerted by the crimping blade (12) during a movement in the working direction.

Description

DESCRIPTION DESCRIPTION
TITRE : DISPOSITIF DE SERTISSAGE DE BORDS DE TÔLES MÉTALLIQUES ET PROCÉDÉ DE SERTISSAGE ASSOCIÉ TITLE: METAL SHEET EDGE CRIMPING DEVICE AND ASSOCIATED CRIMPING PROCESS
Domaine technique La présente invention revendique la priorité de la demande française 2104492 déposée le 29 Avril 2021 dont le contenu (texte, dessins et revendications) est ici incorporé par référence. Technical field The present invention claims the priority of French application 2104492 filed on April 29, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
La présente demande concerne le domaine de l’outillage de mise en forme et d’assemblage de tôles métalliques, notamment d’ouvrants de véhicule automobile. La présente demande concerne plus particulièrement un dispositif de sertissage de bords de tôles métalliques par pliage d’un desdits bords sur un autre desdits bords, ainsi qu’un procédé de sertissage de bords de tôles métalliques par pliage d’un desdits bords sur un autre desdits bords. This application relates to the field of tools for shaping and assembling sheet metal, in particular motor vehicle openings. The present application relates more particularly to a device for crimping metal sheet edges by folding one of said edges onto another of said edges, as well as a method for crimping metal sheet edges by folding one of said edges onto another. of said edges.
Technique antérieure Dans de nombreux domaines et notamment dans le domaine automobile, il est nécessaire d'unir des panneaux de tôles métalliques entre eux pour former une pièce de véhicule, comme un ouvrant. L'assemblage est généralement effectué par pliage, encore appelé « sertissage », des bords de ces panneaux l'un sur l'autre. Le sertissage des bords de panneaux est généralement réalisé en utilisant une tête de bras robotisé équipée d’un outil de sertissage. PRIOR ART In many fields and in particular in the automotive field, it is necessary to join metal sheet panels together to form a vehicle part, such as an opening. The assembly is generally carried out by folding, also called “crimping”, the edges of these panels one on the other. Panel edge crimping is usually done using a robotic arm head equipped with a crimping tool.
Lors de l’opération de sertissage, les panneaux à assembler sont disposés en superposition sur une matrice et le bras robotisé déplace l’outil de sertissage le long des bords à sertir afin de rabattre et d’appliquer le bord du premier panneau vers un bord du deuxième panneau afin de les assembler et par suite assembler les panneaux entre eux. During the crimping operation, the panels to be assembled are arranged superimposed on a die and the robotic arm moves the crimping tool along the edges to be crimped in order to fold and apply the edge of the first panel to an edge of the second panel in order to assemble them and subsequently assemble the panels together.
Lorsque l’opération de sertissage est réalisée par une lame de sertissage, également appelée « ski », les frottements de la lame de sertissage contre les bords de tôles à sertir sont importants et nécessitent d’être repris dans une matrice de reprise d’effort. Un inconvénient de la méthode actuelle de sertissage à l’aide d’une lame réside dans le fait que les efforts latéraux de réaction au sertissage sont repris dans la matrice et le bras articulé du robot provoquant ainsi une flexion du bras robotisé.When the crimping operation is carried out by a crimping blade, also called a "ski", the friction of the crimping blade against the edges of the sheets to be crimped is significant and needs to be included in a force recovery matrix. . A disadvantage of the current method of crimping using a blade is that the lateral crimping reaction forces are taken up in the die and the articulated arm of the robot, thus causing the robotic arm to bend.
Un autre problème se pose lors du sertissage de bord de pièces automobiles comme des toits ouvrants ou des ouvrants comportant une ouverture destinée à recevoir une vitre. Lorsque l’opération de sertissage est terminée, du fait des efforts importants appliqués sur les bords à sertir qui se transmettent à la matrice de reprise d’effort, la pièce assemblée est difficile à extraire de la matrice. Il est donc nécessaire de prévoir une partie mobile sur la matrice afin de pouvoir extraire la pièce plus facilement. Cela a pour conséquence une complexification de la matrice et une augmentation de son coût de fabrication. Another problem arises when crimping the edge of automotive parts such as sunroofs or openings comprising an opening intended to receive a window. When the crimping operation is complete, due to the significant forces applied to the edges to be crimped which are transmitted to the force absorption die, the assembled part is difficult to extract from the die. It is therefore necessary to provide a mobile part on the die in order to be able to extract the part more easily. This results in a complexification of the matrix and an increase in its manufacturing cost.
De même, lors de l’opération de sertissage le bras robotisé portant l’outil de sertissage prend appui sur la matrice afin de suivre les bords de la pièce à sertir. Un problème se pose alors lorsque les dimensions de la pièce varient légèrement par rapport aux dimensions théoriques. En effet, le bras robotisé ne pouvant ajuster la position de son outil de sertissage aux dimensions de la pièce, l’opération de sertissage peut être mal réalisée entraînant des défauts d’assemblage. Similarly, during the crimping operation, the robotic arm carrying the crimping tool rests on the die in order to follow the edges of the part to be crimped. A problem then arises when the dimensions of the part vary slightly with respect to the theoretical dimensions. Indeed, since the robotic arm cannot adjust the position of its crimping tool to the dimensions of the part, the crimping operation may be poorly performed, leading to assembly defects.
Exposé de l'invention Disclosure of Invention
Un but de l’invention est notamment de corriger tout ou partie des inconvénients de l’art antérieur en proposant une solution permettant de sertir des bords de tôles métalliques en s’affranchissant de l’utilisation d’une matrice de reprise d’effort. An object of the invention is in particular to correct all or part of the drawbacks of the prior art by proposing a solution making it possible to crimp the edges of metal sheets by dispensing with the use of a force absorption die.
À cet effet l’invention a pour objet un dispositif de sertissage de bords de tôles métalliques par pliage d’un desdits bords sur un autre desdits bords, comprenant :To this end, the subject of the invention is a device for crimping the edges of metal sheets by folding one of said edges onto another of said edges, comprising:
- un support, - a support,
- une lame de sertissage disposée sur le support, la lame de sertissage comprenant une vrille de sertissage présentant une direction de travail, le dispositif de sertissage étant remarquable en ce qu’il comprend, en outre : - a crimping blade arranged on the support, the crimping blade comprising a crimping twist having a direction of work, the crimping device being remarkable in that it further comprises:
- au moins un galet disposé sur le support et configuré pour contacter un des bords de tôles métalliques de manière à reprendre un effort de pliage exercé par la lame de sertissage lors d’un déplacement dans la direction de travail. - at least one roller arranged on the support and configured to contact one of the metal sheet edges so as to take up a bending force exerted by the crimping blade during movement in the working direction.
Selon un mode de réalisation, l’au moins un galet présente une surface de contact avec le bord de tôles métalliques qui est opposée à la vrille de sertissage à une zone finale de ladite vrille de sertissage dans la direction de travail, de manière à ce que la reprise d’effort soit maximale en fin de pliage. According to one embodiment, the at least one roller has a contact surface with the edge of metal sheets which is opposite to the crimping twist at a zone end of said crimping twist in the working direction, so that the force take-up is maximum at the end of bending.
Selon un mode de réalisation du dispositif, la vrille de sertissage comprend un profil transversal par rapport à la direction de travail, présentant une variation d'inclinaison le long d’une étendue totale de la vrille de sertissage qui est comprise entre 120° et 180° . According to one embodiment of the device, the crimping twist comprises a transverse profile with respect to the direction of work, presenting a variation of inclination along a total extent of the crimping twist which is between 120° and 180°. ° .
Selon un mode de réalisation du dispositif, l’au moins un galet est monté réglable par rapport au support dans une direction perpendiculaire à un axe de rotation dudit au moins un galet. According to one embodiment of the device, the at least one roller is mounted adjustable relative to the support in a direction perpendicular to an axis of rotation of said at least one roller.
Selon un mode de réalisation du dispositif, le montage réglable de l’au moins un galet par rapport au support est de manière à pouvoir faire varier la distance entre une surface de contact dudit au moins un galet avec le bord de tôles métalliques et la vrille de sertissage. According to one embodiment of the device, the adjustable mounting of the at least one roller with respect to the support is so as to be able to vary the distance between a contact surface of said at least one roller with the edge of metal sheets and the twist crimping.
Selon un mode de réalisation du dispositif, l’au moins un galet comprend un moyeu s’engageant avec le support moyennant un jeu dans la direction de réglage, compensé par insertion d’au moins une cale d’épaisseur entre ledit moyeu et ledit support. According to one embodiment of the device, the at least one roller comprises a hub engaging with the support with play in the direction of adjustment, compensated by inserting at least one shim between said hub and said support .
Selon un mode de réalisation du dispositif, le moyeu comprend un évidement s’engageant avec une protubérance du support, l’au moins une cale d’épaisseur étant disposée entre deux faces opposées de l’évidement et de la protubérance, respectivement, lesdites deux faces et ladite au moins une cale étant perpendiculaires à la direction de réglage et située du côté de la vrille de sertissage par rapport à la protubérance du support. According to one embodiment of the device, the hub comprises a recess engaging with a protuberance of the support, the at least one shim being placed between two opposite faces of the recess and of the protuberance, respectively, said two faces and said at least one wedge being perpendicular to the direction of adjustment and located on the side of the crimping twist with respect to the protuberance of the support.
Selon un mode de réalisation du dispositif, l’au moins un galet comprend une platine recouvrant l’évidement et fixée au moyeu et à la protubérance du support. According to one embodiment of the device, the at least one roller comprises a plate covering the recess and fixed to the hub and to the protuberance of the support.
Un autre objet de l’invention est un procédé de sertissage de bords de tôles métalliques, comprenant une action de pliage d’un des bords de tôles métalliques sur un autre desdits bords de tôles métalliques par déplacement relatif d’un dispositif de sertissage le long des bords de tôles métalliques, le procédé étant remarquable en ce que le dispositif de sertissage est selon l’invention et ce en ce que durant l’action de pliage, le bord sujet au pliage est contacté par l’au moins un galet et libre d’appui contre une matrice. Selon un mode de mise en œuvre du procédé, les tôles métalliques forment un toit ou un ouvrant de véhicule automobile et les bords des tôles métalliques délimitent une ouverture dans ledit toit ou ouvrant. Another object of the invention is a method for crimping edges of metal sheets, comprising an action of bending one of the edges of metal sheets onto another of said edges of metal sheets by relative movement of a crimping device along edges of metal sheets, the method being remarkable in that the crimping device is according to the invention and in that during the bending action, the edge subject to bending is contacted by the at least one roller and free support against a matrix. According to one mode of implementation of the method, the metal sheets form a roof or an opening of a motor vehicle and the edges of the metal sheets delimit an opening in said roof or opening.
Brève description des dessins Brief description of the drawings
[Fig 1] représente une matrice de reprise d’effort connue de l’art antérieur ; [Fig 1] represents a force recovery matrix known from the prior art;
[Fig 2] représente un exemple de mode de réalisation d’un dispositif de sertissage selon l’invention ; [Fig 2] shows an exemplary embodiment of a crimping device according to the invention;
[Fig 3] représente un exemple de mode de réalisation d’un dispositif de sertissage selon l’invention ; [Fig 3] shows an exemplary embodiment of a crimping device according to the invention;
[Fig 4] illustre une opération de sertissage de bords de tôles métalliques selon l’invention ; [Fig 4] illustrates an operation for crimping sheet metal edges according to the invention;
Description détaillée detailed description
Selon l’invention, le sertissage des bords de tôles métalliques est obtenu par pliage d’un premier bord de tôles contre un deuxième bord de tôles. According to the invention, the crimping of the edges of metal sheets is obtained by folding a first edge of the sheets against a second edge of the sheets.
Par la suite, on désignera par le terme « bord de tôles », le premier bord de tôle, sujet au pliage, qui est rabattu contre le deuxième bord à l’issue de l’action de sertissage, le deuxième bord de tôles sur lequel est plié le premier bord lors de l’action de sertissage ainsi que la zone bordant le premier bord de tôles avant sertissage et qui forme un nouveau bord après l’action de sertissage. Subsequently, the term “sheet edge” will designate the first sheet edge, subject to bending, which is folded against the second edge at the end of the crimping action, the second sheet edge on which the first edge is bent during the crimping action as well as the zone bordering the first edge of the sheets before crimping and which forms a new edge after the crimping action.
La figure 1 représente un exemple de mode de réalisation d’une matrice M connue de l’art antérieur. Des tôles métalliques dont les bords 31 , 32 sont destinés à être sertis ensemble, sont superposées sur la matrice M. Ces tôles peuvent former, par exemple, un toit ou un ouvrant de véhicule automobile et les bords 31 , 32 de tôles délimiter une ouverture dans le toit ou l’ouvrant. La matrice M comprend une partie M1 amovible. La partie M1 forme une matrice de reprise d’effort. Le fait que cette partie soit mobile ou amovible permet de faciliter l’extraction de la pièce après sertissage. En effet, comme expliqué précédemment, lors du sertissage, le frottement de la vrille de la lame de sertissage contre les bords 31 , 32 de tôles métalliques engendre des efforts importants rendant la pièce sertie difficile à extraire du fait des efforts latéraux de réaction au sertissage repris dans la matrice. Sur la figure 1 , les efforts latéraux sont représentés par une flèche E. Les figures 2 et 3 représentent des modes de réalisation d’un dispositif de sertissage 10 de bords de tôles métalliques selon l’invention. FIG. 1 represents an exemplary embodiment of a matrix M known from the prior art. Metal sheets whose edges 31, 32 are intended to be crimped together, are superimposed on the matrix M. These sheets can form, for example, a roof or a motor vehicle opening and the edges 31, 32 of sheets delimit an opening in the roof or the opening. The matrix M comprises a removable part M1. Part M1 forms a force recovery matrix. The fact that this part is mobile or removable makes it easier to extract the part after crimping. Indeed, as explained above, during crimping, the friction of the twist of the crimping blade against the edges 31, 32 of metal sheets generates significant forces making the crimped part difficult to extract due to the lateral forces of reaction to the crimping taken up in the matrix. In figure 1, the lateral forces are represented by an arrow E. FIGS. 2 and 3 represent embodiments of a device 10 for crimping the edges of metal sheets according to the invention.
Le dispositif de sertissage 10 d’un desdits bords 31 sur un autre desdits bords 32, comprend un support 11 et au moins une lame de sertissage 12 disposée sur le support. La lame de sertissage 12 est configurée pour sertir les bords 31 , 32 de tôles métalliques par pliage progressif lors du déplacement du dispositif de sertissage 10 dans la direction de travail, d’un desdits bords sur un autre desdits bords. De façon avantageuse, une lame de sertissage 12 permet de réaliser une action de sertissage en une seule passe réduisant ainsi le cycle de fabrication. The device 10 for crimping one of said edges 31 onto another of said edges 32 comprises a support 11 and at least one crimping blade 12 placed on the support. The crimping blade 12 is configured to crimp the edges 31, 32 of metal sheets by progressive folding during the movement of the crimping device 10 in the working direction, from one of said edges to another of said edges. Advantageously, a crimping blade 12 makes it possible to perform a crimping action in a single pass, thus reducing the manufacturing cycle.
Suivant un mode de réalisation, la lame de sertissage 12 comprend une surface de contact avec le bord des tôles lors de leur sertissage et s’étend suivant un profil vrillé. Par la suite, cette surface de contact de la lame de sertissage 12 avec le bord 31 de tôle sera nommée « vrille de sertissage ». According to one embodiment, the crimping blade 12 comprises a contact surface with the edge of the sheets during their crimping and extends along a twisted profile. Subsequently, this contact surface of the crimping blade 12 with the edge 31 of sheet metal will be called “crimping twist”.
Le profil de la vrille de sertissage 13 est configuré pour plier et rabattre le bord 31 de tôle sur l’autre bord 32 de tôle lors du déplacement de la lame de sertissage 12 le long du bord desdites tôles métalliques à sertir. Le pliage du bord 31 est obtenu par frottement de la vrille de sertissage 13 contre le bord 31 de tôle. The profile of the crimping auger 13 is configured to bend and fold the edge 31 of sheet metal over the other edge 32 of sheet metal when moving the crimping blade 12 along the edge of said metal sheets to be crimped. The folding of the edge 31 is obtained by friction of the crimping twist 13 against the edge 31 of sheet metal.
Selon un mode de réalisation, par exemple illustré sur la figure 4, la vrille de sertissage 13 comprend un profil transversal, par rapport à la direction de travail, présentant une variation d'inclinaison le long d’une étendue totale de la vrille de sertissage qui est comprise entre 120° et 180°. De façon avantageuse, un tel profil permet de sertir des bords 31 , 32 de tôles métalliques quelle que soit la valeur de l’angle formé par le bord avant sertissage et la zone proximale de ce bord 32 contre laquelle ce bord 31 est rabattu à l’issue de l’action de sertissage. According to one embodiment, for example illustrated in Figure 4, the crimping auger 13 comprises a transverse profile, with respect to the direction of work, presenting a variation in inclination along a total extent of the crimping auger which is between 120° and 180°. Advantageously, such a profile makes it possible to crimp the edges 31, 32 of metal sheets regardless of the value of the angle formed by the edge before crimping and the proximal zone of this edge 32 against which this edge 31 is folded down. outcome of the crimping action.
On entend par direction de travail d’une vrille de sertissage 13, la direction le long de laquelle la vrille de sertissage 13 est déplacée afin qu’elle puisse replier le bord 31 de tôle sur le bord 32 de l’autre tôle lors de l’opération de sertissage desdits bords 31, 32 de tôles. The working direction of a crimping auger 13 is understood to mean the direction along which the crimping auger 13 is moved so that it can fold the edge 31 of one sheet over the edge 32 of the other sheet during the crimping operation of said edges 31, 32 of sheets.
Le dispositif de sertissage 10 selon l’invention comprend également au moins un galet 14 disposé sur le support 11. Le au moins un galet 14 est configuré pour venir en contact avec le bord 31 de tôle métallique à sertir lors de l’opération de sertissage. Lors de l’opération de sertissage, le au moins un galet 14 a pour fonction de reprendre l’effort de pliage exercé par la lame de sertissage 12 lors de son déplacement, dans la direction de travail, le long du bord à sertir. The crimping device 10 according to the invention also comprises at least one roller 14 arranged on the support 11. The at least one roller 14 is configured to come into contact with the edge 31 of the sheet metal to be crimped during the crimping operation. . During the crimping operation, the function of at least one roller 14 is to take up the bending force exerted by the crimping blade 12 during its movement, in the working direction, along the edge to be crimped.
De façon avantageuse, le fait que la réaction à l’effort soit reprise par le au moins un galet 14 plutôt que par une matrice de reprise d’effort permet de réduire les coûts d’outillage puisqu’il n’y a plus nécessité d’ajouter une partie amovible au support de tôles. Cette solution permet également de simplifier la réalisation du support de tôles sur lequel sont empilés les éléments de carrosserie dont les bords sont destinés à être sertis. Advantageously, the fact that the reaction to the force is taken up by the at least one roller 14 rather than by a force take-up die makes it possible to reduce the tooling costs since there is no longer any need for add a removable part to the sheet metal support. This solution also makes it possible to simplify the production of the sheet support on which are stacked the bodywork elements whose edges are intended to be crimped.
Selon un mode de réalisation, le galet 14 est un cylindre, par exemple, métallique monté mobile en rotation sur le support 11 autour de son axe de rotation. Le galet peut être un roulement à billes ou à rouleaux, un cylindre monté sur de tels roulements ou tout autre dispositif équivalents. Le galet 14 peut correspondre à plusieurs cylindres empilés de sorte à augmenter la surface de contact 15 du galet 14. Dans ce mode de réalisation, la surface de contact 15 du galet 14 correspond à sa zone de roulement. According to one embodiment, the roller 14 is a cylinder, for example, metallic mounted rotatably on the support 11 around its axis of rotation. The roller can be a ball or roller bearing, a cylinder mounted on such bearings or any other equivalent device. The roller 14 may correspond to several cylinders stacked so as to increase the contact surface 15 of the roller 14. In this embodiment, the contact surface 15 of the roller 14 corresponds to its running zone.
Selon un mode de réalisation, le dispositif de sertissage 10 comprend plusieurs galets 14 dont au moins deux axes de rotation ont des directions différentes, par exemple, afin de reprendre des efforts dans plusieurs directions. According to one embodiment, the crimping device 10 comprises several rollers 14 of which at least two axes of rotation have different directions, for example, in order to take up forces in several directions.
Selon un mode de réalisation, la surface de contact 15 du galet 14 est opposée à la vrille de sertissage 13 à une zone finale de la vrille 12 dans sa direction de travail, de manière à ce que la reprise d’effort soit maximale en fin de pliage. According to one embodiment, the contact surface 15 of the roller 14 is opposite the crimping twist 13 at a final zone of the twist 12 in its working direction, so that the force take-up is maximum at the end. folding.
On entend par zone finale de la vrille de sertissage 13, la zone de la vrille par laquelle s'échappe le bord de tôle 31 à plier sur l’autre bord de tôle 32 par suite du déplacement de la lame de sertissage 12 le long des bords 31, 32 à sertir. The term final zone of the crimping twist 13 is understood to mean the zone of the twist through which the sheet edge 31 to be bent escapes on the other sheet edge 32 as a result of the displacement of the crimping blade 12 along the edges 31, 32 crimp.
Selon un mode de réalisation, le galet 14 est monté réglable par rapport au support 11 dans la direction de l’effort latéral, c’est-à-dire dans une direction perpendiculaire à l’axe de rotation dudit au moins un galet. Ce mode de réalisation permet ainsi de faire varier la distance 21 entre la surface de contact 15 du au moins un galet 14 et la vrille de sertissage 13. De façon avantageuse, cela permet, par exemple, d’adapter la distance 21 entre la vrille de sertissage 13 et le galet 14 en fonction de l’épaisseur des bords 31 , 32 des tôles à sertir. Selon un mode de réalisation, le galet 14 comprend un moyeu 22 s’engageant avec le support 11 moyennant un jeu dans la direction de réglage. According to one embodiment, the roller 14 is mounted adjustable relative to the support 11 in the direction of the lateral force, that is to say in a direction perpendicular to the axis of rotation of said at least one roller. This embodiment thus makes it possible to vary the distance 21 between the contact surface 15 of the at least one roller 14 and the crimping twist 13. Advantageously, this makes it possible, for example, to adapt the distance 21 between the twist crimping 13 and the roller 14 depending on the thickness of the edges 31, 32 of the sheets to be crimped. According to one embodiment, the roller 14 comprises a hub 22 engaging with the support 11 with play in the direction of adjustment.
Selon un mode de réalisation, le moyeu 22 du galet 14 comprend un trou oblong 16 dans lequel vient s’insérer un moyen de fixation du galet 14 sur le support 11. Il peut s’agir d’une vis comme illustré sur la figure 2 ou tout autre moyen équivalent permettant de fixer temporairement le galet 14 sur le support 11. Le jeu 21 entre la vrille de sertissage 13 et la surface de contact 15 du galet 14 peut être modifié en desserrant le moyen de fixation du moyeu et déplaçant le galet 14 selon la direction de l’effort latéral, perpendiculaire à l’axe de rotation du galet 14. According to one embodiment, the hub 22 of the roller 14 comprises an oblong hole 16 into which is inserted a means for fixing the roller 14 to the support 11. This may be a screw as illustrated in FIG. or any other equivalent means making it possible to temporarily fix the roller 14 on the support 11. The play 21 between the crimping twist 13 and the contact surface 15 of the roller 14 can be modified by loosening the hub fixing means and moving the roller 14 in the direction of the lateral force, perpendicular to the axis of rotation of the roller 14.
Selon un mode de réalisation, le jeu 21 dans la direction de réglage est compensé par insertion d’une ou plusieurs cales d’épaisseur 23 entre le moyeu 22 et la protubérance 24 du support 11. De façon avantageuse, l’assemblage des cales d’épaisseur 23 entre le support et le moyeu 22 permet d’éviter tout mouvement du moyeu 22 par rapport au support 11 après réglage de la distance 21 entre la vrille de sertissage 13 et la surface de contact 15 du galet 14. According to one embodiment, the play 21 in the direction of adjustment is compensated by inserting one or more shims 23 between the hub 22 and the protuberance 24 of the support 11. Advantageously, the assembly of the shims thickness 23 between the support and the hub 22 prevents any movement of the hub 22 relative to the support 11 after adjustment of the distance 21 between the crimping twist 13 and the contact surface 15 of the roller 14.
À titre illustratif, la figure 3 représente un mode de réalisation dans lequel le support 11 du dispositif de sertissage 10 comprend une protubérance 24. Le galet 14, quant à lui, comprend un évidement dans son moyeu 22 agencé pour s’engager avec la protubérance 24 du support 11. Le réglage du jeu 21 entre la vrille 13 et la surface de contact 15 du galet 14 est assuré par au moins une cale d’épaisseur 23 disposée entre deux faces opposées de l’évidement et de la protubérance 24, situées du côté de la vrille de sertissage 13 par rapport à la protubérance 24 du support 11. Dans ce mode de réalisation, la réaction d’effort est assurée par le galet 14 formé de deux roulements empilés le long de leur axe de rotation. By way of illustration, FIG. 3 represents an embodiment in which the support 11 of the crimping device 10 comprises a protuberance 24. The roller 14, for its part, comprises a recess in its hub 22 arranged to engage with the protuberance 24 of the support 11. Adjusting the clearance 21 between the auger 13 and the contact surface 15 of the roller 14 is provided by at least one shim 23 disposed between two opposite faces of the recess and the protrusion 24, located on the side of the crimping swirl 13 with respect to the protuberance 24 of the support 11. In this embodiment, the force reaction is ensured by the roller 14 formed of two bearings stacked along their axis of rotation.
Suivant un mode de réalisation, les deux faces opposées de l’évidement du moyeu et de la protubérance 24 du support 11 sont orientées perpendiculairement à la direction de réglage. De même, les faces principales des cales d’épaisseur 23 sont orientées perpendiculairement à la direction de réglage. According to one embodiment, the two opposite faces of the recess of the hub and of the protrusion 24 of the support 11 are oriented perpendicular to the direction of adjustment. Similarly, the main faces of the shims 23 are oriented perpendicular to the direction of adjustment.
Les cales 23 peuvent être de même épaisseur ou d’épaisseurs différentes. Suivant un mode de réalisation, les cales d’épaisseur 23 sont insérées de chaque côté de la protubérance 24 entre deux faces opposées de l’évidement et de la protubérance 24. The wedges 23 can be of the same thickness or of different thicknesses. According to one embodiment, the shims 23 are inserted on each side of the protuberance 24 between two opposite faces of the recess and of the protuberance 24.
Suivant un mode de réalisation illustré sur la figure 2, au moins un galet 14 du dispositif de sertissage 10 comprend une platine 17 recouvrant l’évidement de son moyeu 22. La platine 17 est fixée au moyeu et/ou à la protubérance 24, permettant ainsi d’assurer le maintien des cales d’épaisseur 23 à l’intérieur de l’évidement. Afin d’assurer la possibilité de réglage du jeu 21 entre la vrille 13 et la surface de contact 15 du galet 14, la platine 17 comprend un trou oblong 16 dans lequel vient s’insérer le moyen de fixation du moyeu 22 dudit au moins un galet 14 sur le support 11. According to an embodiment illustrated in FIG. 2, at least one roller 14 of the crimping device 10 comprises a plate 17 covering the recess of its hub 22. The plate 17 is fixed to the hub and/or to the protrusion 24, allowing thus ensuring the maintenance of the shims 23 inside the recess. In order to ensure the possibility of adjustment of the play 21 between the twist 13 and the contact surface 15 of the roller 14, the plate 17 comprises an oblong hole 16 into which is inserted the means for fixing the hub 22 of said at least one roller 14 on support 11.
L’ajustement de la distance 21 entre la vrille 13 et la surface de contact 15 du galet 14 peut être effectué en enlevant la platine 17 et en modifiant la disposition des cales 23 entre les faces opposées de la protubérance 24 et de l’évidement ou en modifiant l’épaisseur des cales 23. The adjustment of the distance 21 between the twist 13 and the contact surface 15 of the roller 14 can be carried out by removing the plate 17 and modifying the arrangement of the wedges 23 between the opposite faces of the protuberance 24 and the recess or by modifying the thickness of the shims 23.
Selon l’invention, le sertissage d’un des bords de tôles métalliques sur un autre bord de tôles est effectué par une action de pliage lors d’un déplacement relatif du dispositif de sertissage le long des bords 31, 32 de tôles métalliques. Durant l’action de pliage, le bord 31 sujet au pliage est en contact avec le ou les galets 14 du dispositif de sertissage 10 sans être en appui contre une matrice de reprise d’effort.According to the invention, the crimping of one of the edges of the metal sheets on another edge of the sheets is carried out by a bending action during a relative movement of the crimping device along the edges 31, 32 of the metal sheets. During the bending action, the edge 31 subject to bending is in contact with the roller or rollers 14 of the crimping device 10 without resting against a force-absorbing die.
Suivant un mode de réalisation, le dispositif de sertissage 10 selon l’invention est destiné à être fixé sur la tête d’un bras articulé de robot d’assemblage. L’action de sertissage est réalisée par le déplacement du dispositif de sertissage à l’aide du bras robotisé le long des bords 31 , 32 de tôles métalliques à sertir. According to one embodiment, the crimping device 10 according to the invention is intended to be fixed on the head of an articulated arm of an assembly robot. The crimping action is performed by moving the crimping device using the robotic arm along the edges 31, 32 of metal sheets to be crimped.
De façon avantageuse, cette solution permet d’améliorer la précision de positionnement de la lame de sertissage 12 par rapport aux bords 31 , 32 de tôles à sertir. La qualité des éléments sertis est ainsi améliorée grâce à l’adaptabilité de la trajectoire du dispositif de sertissage 10. En effet, en cas de variabilité de dimensionnement des tôles à sertir, généralement de l’ordre de quelques dixièmes de millimètre, au lieu de dépendre d’un appui sur la matrice, la flexibilité du bras robotisé permet de suivre exactement la forme des tôles à sertir. Selon un mode de réalisation, la tête de sertissage est équipée d’un presseur 33 comme illustré sur la figure 4. Le presseur 33 est configuré pour maintenir les bords 31 , 32 de tôles en position lors de l’action de sertissage afin d’éviter que ceux-ci ne se déplacent lors de leur assemblage. Advantageously, this solution makes it possible to improve the positioning precision of the crimping blade 12 with respect to the edges 31, 32 of the sheets to be crimped. The quality of the crimped elements is thus improved thanks to the adaptability of the trajectory of the crimping device 10. Indeed, in the event of variability in the dimensioning of the sheets to be crimped, generally of the order of a few tenths of a millimeter, instead of depending on a press on the die, the flexibility of the robotic arm makes it possible to follow exactly the shape of the sheets to be crimped. According to one embodiment, the crimping head is equipped with a presser 33 as illustrated in the Figure 4. The presser 33 is configured to hold the edges 31, 32 of sheets in position during the crimping action to prevent them from moving during their assembly.
Suivant un autre mode de réalisation, le dispositif de sertissage 10 selon l’invention est fixe par rapport au sol. Le dispositif de sertissage 10 peut, par exemple, être fixé à un support ou à une tête de sertissage fixé au sol. Lors de l’action de sertissage, un bras robotisé présente les bords 31 , 32 de tôles à sertir dans le dispositif de sertissage 10 selon l’invention, entre la surface de contact 15 du galet 14 et la lame de sertissage 12 puis déplace les tôles métalliques le long de leurs bords 31, 32 de manière à les assembler ensemble par pliage. According to another embodiment, the crimping device 10 according to the invention is fixed with respect to the ground. The crimping device 10 can, for example, be fixed to a support or to a crimping head fixed to the ground. During the crimping action, a robotic arm presents the edges 31, 32 of sheets to be crimped in the crimping device 10 according to the invention, between the contact surface 15 of the roller 14 and the crimping blade 12 then moves the metal sheets along their edges 31, 32 so as to assemble them together by bending.
De façon avantageuse, cette solution permet également d’augmenter la flexibilité des ilôts de sertissage, limitant ainsi les investissements, et de réduire les surfaces au sol. Advantageously, this solution also makes it possible to increase the flexibility of the crimping islands, thus limiting investments, and to reduce floor space.
L’invention peut être mise en œuvre, par exemple, dans le domaine de l’automobile. Les tôles métalliques peuvent, par exemple, former un toit ou un ouvrant de véhicule automobile et les bords 31 , 32 de tôles former une ouverture dans ledit toit ou ledit ouvrant. The invention can be implemented, for example, in the automotive field. The metal sheets can, for example, form a roof or an opening of a motor vehicle and the edges 31, 32 of the sheets form an opening in said roof or said opening.

Claims

REVENDICATIONS
[Revendication 1.] Dispositif de sertissage (10) de bords (31 , 32) de tôles métalliques par pliage d’un desdits bords (31) sur un autre desdits bords (32), ledit dispositif de sertissage (10) comprenant : [Claim 1.] Device (10) for crimping edges (31, 32) of sheet metal by folding one of said edges (31) onto another of said edges (32), said crimping device (10) comprising:
- un support (11), - a support (11),
- une lame de sertissage (12) disposée sur le support (11), la lame de sertissage (12) comprenant une vrille de sertissage (13) présentant une direction de travail, caractérisé en ce que le dispositif de sertissage (10) comprend, en outre :- a crimping blade (12) arranged on the support (11), the crimping blade (12) comprising a crimping twist (13) having a working direction, characterized in that the crimping device (10) comprises, in addition :
- au moins un galet (14) disposé sur le support (11 ) et configuré pour contacter un des bords (31) de tôles métalliques de manière à reprendre un effort de pliage exercé par la lame de sertissage (12) lors d’un déplacement dans la direction de travail. - at least one roller (14) disposed on the support (11) and configured to contact one of the edges (31) of metal sheets so as to take up a bending force exerted by the crimping blade (12) during movement in the direction of work.
[Revendication 2.] Dispositif de sertissage (10) selon la revendication précédente dans lequel l’au moins un galet (14) présente une surface de contact (15) avec le bord (31) de tôles métalliques qui est opposée à la vrille de sertissage (13) à une zone finale de ladite vrille de sertissage (13) dans la direction de travail, de manière à ce que la reprise d’effort soit maximale en fin de pliage. [Claim 2.] Crimping device (10) according to the preceding claim wherein the at least one roller (14) has a contact surface (15) with the edge (31) of metal sheets which is opposite to the twist of crimping (13) to a final zone of said crimping twist (13) in the direction of work, so that the force take-up is maximum at the end of bending.
[Revendication 3.] Dispositif de sertissage (10) selon une des revendications précédentes dans lequel la vrille de sertissage (13) comprend un profil transversal par rapport à la direction de travail, présentant une variation d'inclinaison le long d’une étendue totale de la vrille de sertissage (13) qui est comprise entre 120° et 180°. [Claim 3.] Crimping device (10) according to one of the preceding claims, in which the crimping auger (13) comprises a transverse profile with respect to the direction of work, presenting a variation of inclination along a total extent of the crimping twist (13) which is between 120° and 180°.
[Revendication 4.] Dispositif de sertissage (10) selon une des revendications précédentes dans lequel l’au moins un galet (14) est monté réglable par rapport au support (11), perpendiculaire à un axe de rotation dudit au moins un galet (14). [Claim 4.] Crimping device (10) according to one of the preceding claims wherein the at least one roller (14) is mounted adjustable relative to the support (11), perpendicular to an axis of rotation of said at least one roller ( 14).
[Revendication 5.] Dispositif de sertissage selon la revendication précédente dans lequel le montage réglable de l’au moins un galet (14) par rapport au support (11 ) est de manière à pouvoir faire varier la distance (21 ) entre une surface de contact (15) dudit au moins un galet (14) avec le bord (31) de tôles métalliques et la vrille de sertissage (13). [Revendication 6.] Dispositif de sertissage (10) selon une des revendications 4 et 5, dans lequel l’au moins un galet (14) comprend un moyeu (22) s’engageant avec le support (11 ) moyennant un jeu dans la direction de réglage, compensé par insertion d’au moins une cale d’épaisseur (23) entre ledit moyeu et ledit support. [Claim 5.] Crimping device according to the preceding claim wherein the adjustable mounting of the at least one roller (14) relative to the support (11) is so as to be able to vary the distance (21) between a surface of contact (15) of said at least one roller (14) with the edge (31) of metal sheets and the crimping twist (13). [Claim 6.] Crimping device (10) according to one of claims 4 and 5, wherein the at least one roller (14) comprises a hub (22) engaging with the support (11) with a clearance in the adjustment direction, compensated by inserting at least one shim (23) between said hub and said support.
[Revendication 7.] Dispositif de sertissage (10) selon la revendication précédente dans lequel le moyeu comprend un évidement s’engageant avec une protubérance (24) du support (11 ), l’au moins une cale d’épaisseur (23) étant disposée entre deux faces opposées de l’évidement et de la protubérance (24), respectivement, lesdites deux faces et ladite au moins une cale (23) étant perpendiculaires à la direction de réglage et située du côté de la vrille de sertissage (13) par rapport à la protubérance (24) du support.[Claim 7.] Crimping device (10) according to the preceding claim wherein the hub comprises a recess engaging with a protuberance (24) of the support (11), the at least one spacer (23) being arranged between two opposite faces of the recess and of the protrusion (24), respectively, said two faces and said at least one wedge (23) being perpendicular to the direction of adjustment and located on the side of the crimping twist (13) relative to the protuberance (24) of the support.
[Revendication 8.] Dispositif de sertissage (10) selon la revendication précédente dans lequel l’au moins un galet (14) comprend une platine (17) recouvrant l’évidement et fixée au moyeu (22) et à la protubérance (24) du support (11). [Claim 8.] Crimping device (10) according to the preceding claim wherein the at least one roller (14) comprises a plate (17) covering the recess and fixed to the hub (22) and to the protrusion (24) of the support (11).
[Revendication 9.] Procédé de sertissage (10) de bords (31 , 32) de tôles métalliques, comprenant une action de pliage d’un des bords (31) de tôles métalliques sur un autre desdits bords (32) de tôles métalliques par déplacement relatif d’un dispositif de sertissage (10) le long des bords (31,[Claim 9.] A method of crimping (10) edges (31, 32) of metal sheets, comprising an action of folding one of the edges (31) of metal sheets onto another of said edges (32) of metal sheets by relative movement of a crimping device (10) along the edges (31,
32) de tôles métalliques, caractérisé en ce que le dispositif de sertissage (10) est selon l’une des revendications précédentes et durant l’action de pliage, le bord (31) sujet au pliage étant contacté par l’au moins un galet (14) et libre d’appui contre une matrice. 32) of metal sheets, characterized in that the crimping device (10) is according to one of the preceding claims and during the bending action, the edge (31) subject to bending being contacted by the at least one roller (14) and free to support against a matrix.
[Revendication 10.] Procédé selon la revendication précédente, dans lequel les tôles métalliques forment un toit ou ouvrant de véhicule automobile et les bords (31 , 32) des tôles métalliques délimitent une ouverture dans ledit toit ou ouvrant. [Claim 10.] Method according to the preceding claim, in which the metal sheets form a roof or opening of a motor vehicle and the edges (31, 32) of the metal sheets define an opening in said roof or opening.
EP22713982.1A 2021-04-29 2022-03-11 Device for crimping edges of metal sheets, and associated crimping method Pending EP4329957A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2104492A FR3122344B1 (en) 2021-04-29 2021-04-29 DEVICE FOR CRIMPING METAL SHEET EDGES AND ASSOCIATED CRIMPING METHOD
PCT/FR2022/050444 WO2022229526A1 (en) 2021-04-29 2022-03-11 Device for crimping edges of metal sheets, and associated crimping method

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EP4329957A1 true EP4329957A1 (en) 2024-03-06

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EP22713982.1A Pending EP4329957A1 (en) 2021-04-29 2022-03-11 Device for crimping edges of metal sheets, and associated crimping method

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EP (1) EP4329957A1 (en)
FR (1) FR3122344B1 (en)
WO (1) WO2022229526A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104492A5 (en) 1970-08-20 1972-04-14 Aga Ab Increasing sensitivity of radiochromatographic analyser - by use of grid above cathode
US20080250835A1 (en) * 2005-04-27 2008-10-16 Honda Motor Co., Ltd. Roll Hemming Method and Roll Hemming Apparatus
DE102014015020A1 (en) * 2014-10-08 2015-04-23 Daimler Ag Method and tool for processing at least one sheet metal component
FR3034330B1 (en) * 2015-04-03 2017-03-24 Peugeot Citroen Automobiles Sa CRUSHING HEAD BETWEEN TWO SHEETS OF A CAR BODY MEMBER, PROVIDED WITH A TOOL ASSOCIATING A SHAPE RAMP AND A ROD.
FR3076230B1 (en) * 2018-01-04 2019-12-13 Psa Automobiles Sa CRIMPING DEVICE.

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WO2022229526A1 (en) 2022-11-03
FR3122344A1 (en) 2022-11-04
FR3122344B1 (en) 2023-04-07

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