EP4392193A1 - Tete de pliage de bord de tole métallique a 180° avec galet d'appui et méthode de pliage associée - Google Patents
Tete de pliage de bord de tole métallique a 180° avec galet d'appui et méthode de pliage associéeInfo
- Publication number
- EP4392193A1 EP4392193A1 EP22757314.4A EP22757314A EP4392193A1 EP 4392193 A1 EP4392193 A1 EP 4392193A1 EP 22757314 A EP22757314 A EP 22757314A EP 4392193 A1 EP4392193 A1 EP 4392193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- folding
- support
- head
- metal sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
Definitions
- the invention relates to the field of the shaping of stampings, in particular of motor vehicle bodywork elements, more particularly by bending.
- the published patent document EP 1 685 915 A1 discloses a bending head suitable for crimping two edges of metal sheets by folding one of said edges over the other of said edges by approximately 90°.
- the folding head comprises two rollers with different angles of inclination, so as to achieve with the first roller a first folding and with the second roller a second folding.
- the edge is thus folded against the other edge in a single pass of the folding head.
- the first wheel is mounted to slide on a support of the head, against an elastic force or controlled by a hydraulic jack, so as to be able to follow a non- straight from the edge to be folded.
- a support roller is secured to the first caster on the sliding support, so as to ensure tracking of the non-rectilinear contour.
- the aim of the invention is to overcome at least one drawback of the aforementioned state of the art. More particularly, the aim of the invention is to allow crimping of two edges of metal sheets where one edge is folded over by approximately 180° on the other edge, with better control of the height of the 180° fold thus formed.
- the subject of the invention is a head for bending an edge of a metal sheet, comprising a support; a contact surface with the edge, fixed to the support and capable of bending said edge during movement along said edge; a support roller on a die, fixed to the support; remarkable in that the contact surface extends along a twisted profile on a folding blade and is configured to fold the edge by at least 160° in a folding direction against another edge of another metal sheet; and the support roller is rotatable around an axis fixed with respect to the support.
- the bending head comprises a part for coupling to a robotic arm, the support being movable in translation relative to the coupling part against an elastic force.
- the coupling part comprises a fixing flange extending in a transverse plane, preferably perpendicular, to the folding direction.
- the coupling part comprises a projecting part engaging in a movable manner in translation with an elongated portion of the support.
- the projecting portion forms a cylinder and the elongated portion forms a pin engaging in sliding manner in said cylinder.
- FIG 1 is a sectional view of two edges of crimped metal sheets, according to the invention.
- FIG 2 is a perspective view of an exterior wall and a motor vehicle sunroof liner, the edges of which are being crimped by moving a bending head;
- the metal sheet 2 comprises an edge 2.1 previously bent at approximately 90°, for example by "falling" during a shaping operation on a stamping press.
- the other sheet metal 4 also includes an edge 4.1 previously bent at approximately 90°, similar to edge 2.1, and placed against said edge 2.1.
- the latter is folded 180° around the edge 4.2 of the other edge 4.1 and folded against it, thus forming a 180° fold 2.2 and a folded portion 2.3.
- the edge 2.1 before folding and folding is illustrated in dotted lines, corresponding to the 180° fold and the folded portion 2.3.
- the folding and folding of the edge 2.1 can be done by relying on the edge 4.2 of the other edge 4.1 but this has the consequence that the height H of the folded edge 2.1 is determined by the height of the other edge 4.1. Or the latter may have a variable height along its extent, then leading to a non-constant height H along the edges 2.1 and 4.1 thus crimped.
- Figure 2 is a perspective view of an outer wall 2 and a lining 4 of a motor vehicle sunroof, the edges of which are crimped by moving a folding head.
- the outer wall corresponds to sheet metal 2 in Figure 1 and the liner corresponds to the other sheet metal 4 in Figure 1.
- the respective edges 2.1 and 4.1 visible in Figure 1 are present in Figure 2 along the opening of the sunroof, however difficult to see.
- the metal sheet 2 is placed against a die 6 specially dimensioned and shaped for this operation.
- Figure 3 is a sectional view of the folding head 8.
- the folding head 8 comprises a support 10 to which is fixed a folding blade 12 and a support roller 14.
- the folding blade 12 may be as disclosed in the published patent document WO 2017/144791 A1, that is that is to say formed essentially of a solid body having a surface in contact with the edge, said surface being left and twisted essentially in a direction generally parallel to the working direction of the blade.
- the surface in question may correspond to a surface formed by a preferentially rectilinear generatrix which moves in translation along the edge of the folding blade 12 while undergoing a rotation corresponding to the folding and folding of the edge.
- the variation in inclination of the transverse profile of the contact surface, from an entry zone to the exit zone essentially corresponds to the folding angle which must be applied to the edge.
- the bending head 8 also includes a part 16 for coupling with the robotic arm.
- the coupling part 16 comprises a flange 16.1 for fixing to the robotic arm and a cylindrical part 16.2 projecting from the fixing flange 16.1.
- THE support 10 is mounted to move in translation, against an elastic force, on the coupling part 16.
- the support 10 comprises a central part 10.1 on which the blade 12 and the support roller 14 are fixed, and an elongated part 10.2, forming a pin, slidingly engaging in the cylindrical part 16.2 of the coupling piece 16.
- the pin comprises a proximal portion with a cylindrical outer surface slidably mounted in a guide ring 16.3 mounted on the distal end of the cylindrical part 16.2 of the coupling part 16, and a distal end portion supporting a slider 10.3 slidably mounted in a bore of said cylindrical part 16.2 of the coupling part 16
- a spring 18, in this case compression, is housed in the cylindrical part 16.2 of the coupling part 16, with a first end against a bearing surface 16.4 of said cylindrical part 16.2 and a second end against a support ring 10.4 fixed to the spindle formed by the elongated part 10.2 of the support 10.
- the spindle in question forms a shoulder on which the support ring 10.4 abuts.
- the spring 18 thus exerts an elastic force on the support 10, via the support ring 10.4 and the elongated part 10.2 of said support 10.
- the folding blade 12 has its contact surface against the folded portion 2.3 of the edge 2.1 of the metal sheet 2 corresponding in this case to an outer roof skin , against the other edge 4.1 of the other metal sheet 4 corresponding in this case to a roof lining.
- the folding direction is then vertical and parallel to the other edge 4.1.
- the support roller 14 is adjacent to the folding blade 12 and is configured to bear against the die 6 in a direction corresponding to the folding direction. More specifically, the axis of rotation of the support roller 14, represented by the generally horizontal axis line, is perpendicular to the folding direction, which in this case is vertical, or at least forms with said perpendicular an angle 15° or less.
- the support roller When moving the folding head 8 along the edge 2.1 to fold and fold against the other edge 4.1, the support roller is applied against a reference surface of the die 6, adjacent to said edges 2.1 and 4.1, so as to control and control the height of the folding blade 12 and therefore of its contact surface with the edge 2.1. This contact is facilitated by the assembly sliding in translation against a force elastic of the support 10 on the coupling part 16.
- the robotic arm to which the coupling part 16 is fixed can thus, when the bending head 8 moves along the edge 2.1, exert a force on the support 10 via the spring 18, this force then being taken up by the support roller 14 rolling on the die 6.
- the amplitude of bending and folding of the edge of the metal sheet is of the order of 180°. However, it is understood that it can be lower, for example up to 160°. In this case the edge of the metal sheet in the unfolded state can be pre-bent at a small angle, for example up to 20°.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2108851A FR3126324A1 (fr) | 2021-08-24 | 2021-08-24 | Tête de pliage à 180° de bord de tôle métallique avec galet d’appui |
| PCT/FR2022/051477 WO2023025997A1 (fr) | 2021-08-24 | 2022-07-22 | Tete de pliage de bord de tole metallique a 180° avec galet d'appui et methode de pliage associee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4392193A1 true EP4392193A1 (fr) | 2024-07-03 |
| EP4392193B1 EP4392193B1 (fr) | 2026-01-28 |
Family
ID=77821944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22757314.4A Active EP4392193B1 (fr) | 2021-08-24 | 2022-07-22 | Tete de pliage de bord de tole metallique a au moins 160° avec galet d'appui et methode de pliage associée |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4392193B1 (fr) |
| CN (1) | CN117836074A (fr) |
| FR (1) | FR3126324A1 (fr) |
| WO (1) | WO2023025997A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2108851A1 (fr) | 1970-10-13 | 1972-05-26 | Mediations Sciente Centre | |
| JP2000005834A (ja) * | 1998-06-24 | 2000-01-11 | Toyotomi Kiko Co Ltd | 薄板状弾塑性体フランジ部の逐次成形加工方法とその方法に使用する装置 |
| DE102005004474B3 (de) | 2005-01-31 | 2006-08-31 | Edag Engineering + Design Ag | Bördelvorrichtung und Bördelverfahren zum Umlegen eines Bördelstegs eines Bauteils um eine Bördelkante |
| US9352376B2 (en) * | 2011-05-24 | 2016-05-31 | Comau S.P.A. | Hemming head device and method |
| DE102014015020A1 (de) * | 2014-10-08 | 2015-04-23 | Daimler Ag | Verfahren und Werkzeug zum Bearbeiten wenigstens eines Blechbauteils |
| FR3047913B1 (fr) | 2016-02-22 | 2018-02-23 | Peugeot Citroen Automobiles Sa | Lame et procede de sertissage de toles |
| FR3097144B1 (fr) * | 2019-06-14 | 2021-06-04 | Psa Automobiles Sa | Outil de sertissage par frottement |
-
2021
- 2021-08-24 FR FR2108851A patent/FR3126324A1/fr active Pending
-
2022
- 2022-07-22 EP EP22757314.4A patent/EP4392193B1/fr active Active
- 2022-07-22 WO PCT/FR2022/051477 patent/WO2023025997A1/fr not_active Ceased
- 2022-07-22 CN CN202280057719.1A patent/CN117836074A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4392193B1 (fr) | 2026-01-28 |
| WO2023025997A1 (fr) | 2023-03-02 |
| FR3126324A1 (fr) | 2023-03-03 |
| CN117836074A (zh) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3363553B1 (fr) | Machine de roulage de tôles, ainsi que procédé de roulage d'une tôle utilisant une telle machine de roulage | |
| EP0089904B1 (fr) | Outil de pliage à plat | |
| FR2677934A1 (fr) | Ferrure d'articulation pour sieges a dossier reglable, en particulier pour sieges de vehicules automobiles. | |
| EP2864067B1 (fr) | Procédé de crantage de tube, et machine de crantage associée | |
| FR3097144A1 (fr) | Outil de sertissage par frottement | |
| EP4392193B1 (fr) | Tete de pliage de bord de tole metallique a au moins 160° avec galet d'appui et methode de pliage associée | |
| FR2600015A3 (fr) | Dispositif de fermeture de peignes de brochage | |
| EP0797718B1 (fr) | Arret de porte provisoire pour charniere d'une porte de vehicule automobile et dispositif de fixation d'un tel arret de porte provisoire | |
| WO2012131187A1 (fr) | Dispositif d'arrêt de porte pour portière de véhicule notamment automobile | |
| EP1968758B1 (fr) | Dispositif et procédé d'assemblage de pièces par pliage | |
| FR3006917A1 (fr) | Outil de pliage d'un flan en tole comportant une matrice portant un rouleau. | |
| FR3020771A1 (fr) | Guidage d'un flan de tole sur une matrice de decoupe | |
| FR3076230A1 (fr) | Dispositif de sertissage. | |
| WO2015136168A1 (fr) | Matrice avec ejecteur pour embouti avec gouttiere en bordure | |
| FR2989940A1 (fr) | Mecanisme d'articulation et siege de vehicule comportant un tel mecanisme, et procede pour realiser un tel mecanisme | |
| EP2035164B1 (fr) | Dispositif et procédé d'assemblage de deux panneaux de tole par sertissage | |
| FR3099998A1 (fr) | tête de sertissage intégrant une lame d’anglage | |
| WO2005095015A1 (fr) | Outil de sertissage et appareil de sertissage pourvu d'un tel outil | |
| EP1763445B1 (fr) | Toit rigide pliable | |
| EP1497149A1 (fr) | Toit escamotable dans le coffre arriere d un vehicule | |
| WO2019048710A1 (fr) | Pied aérodynamique d'aileron de véhicule automobile | |
| WO2022229526A1 (fr) | Dispositif de sertissage de bords de tôles métalliques et procédé de sertissage associé | |
| FR3119559A1 (fr) | tête et installation de sertissage pour l’assemblage de profilés | |
| FR3009215A1 (fr) | Tete de sertissage destinee a etre tenue et deplacee par un robot comportant un galet de presertissage et un galet de sertissage | |
| FR3013998A1 (fr) | Amortissement de reception d’embouti sur un outil de mise a forme |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240212 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20251001 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: F10 Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE) Effective date: 20260128 Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602022029359 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 602022029359 Country of ref document: DE |