EP0933148A1 - Seaming machine - Google Patents

Seaming machine Download PDF

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Publication number
EP0933148A1
EP0933148A1 EP99460001A EP99460001A EP0933148A1 EP 0933148 A1 EP0933148 A1 EP 0933148A1 EP 99460001 A EP99460001 A EP 99460001A EP 99460001 A EP99460001 A EP 99460001A EP 0933148 A1 EP0933148 A1 EP 0933148A1
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EP
European Patent Office
Prior art keywords
crimping
tool
head
working head
stroke
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.)
Withdrawn
Application number
EP99460001A
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German (de)
French (fr)
Inventor
Jacques Leroy
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0933148A1 publication Critical patent/EP0933148A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • 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

Definitions

  • the present invention relates to a crimping unit on the edge of a part, in particular of a sheet, which is supported by a matrix.
  • a well-known method for joining two sheets is to crimp the edge of one of them against that of the other.
  • the edge to be crimped is bent at 90 ° to the rest of the sheet metal.
  • the preserting operation consists, in a first step, called “preserting”, to fold it back partially - generally at an angle of 45 ° - towards the other sheet.
  • the actual crimping, carried out in a second step corresponds to complete folding of the sheet metal edge which comes to rest against the edge of the other by pinching.
  • This kind of operation is traditionally done in press, on the table open with movable hydraulic die, or on a fixed die using slide trolleys tilting.
  • the device which is the subject of the invention comprises a working head provided with a crimping tool which is guided in translation in a frame and is animated by a rectilinear back and forth movement in a vertical direction so as to describe successively a downward stroke, called “go”, at the end of which the tool is applied against the workpiece for crimping, and an upward stroke, called “return”, at during which it emerges and moves away from the room.
  • a crimping tool which is guided in translation in a frame and is animated by a rectilinear back and forth movement in a vertical direction so as to describe successively a downward stroke, called “go”, at the end of which the tool is applied against the workpiece for crimping, and an upward stroke, called “return”, at during which it emerges and moves away from the room.
  • a drawback of known devices, linked to their hydraulic control, is that they require the presence of a pressure generator and distribution circuits hydraulic.
  • this type of installation is relatively noisy, poses problems safety due to the high pressures used, and is subject to leaks.
  • Another drawback is that the device must be equipped position sensors to control the actuator, and in particular the reversal of its hydraulic supply between its working strokes - "outward” stroke - and clearing - "return” race -.
  • the invention proposes to solve these difficulties.
  • the training of the working head is achieved by means of an electric gear motor, the output shaft of which rotates in continuous and in one direction only, this shaft being connected to said head by means of a eccentric and connecting rod system.
  • the device is very simple.
  • the working strokes - called “outward” - and of clearance - called “return” - of the working head each correspond to rotations successive half a turn of the output shaft, the corresponding complete crimping cycle a turn from this tree.
  • the device illustrated in FIGS. 1 to 3 is a preserting device of a part 100 arranged on a fixed matrix 10, with a horizontal upper face, on which it is suitably positioned by suitable means, not shown.
  • This part 100 consists of two overlapping sheets.
  • the edge of the lower sheet extends laterally relative to the upper sheet, and is raised at right angles, forming a tongue.
  • This is intended to be folded down, against the edge of the upper sheet, for the pinch, by the crimping operation.
  • This operation is done in two successive phases, one of "pre-crimping", during which the tongue is folded down to approximately 45 °, the other of "crimping" proper, during which it is folded down completely (at 90 °).
  • the working head referenced 2
  • the working head is equipped with a tool 20 carrying out this preserting.
  • the device comprises a fixed frame 1 at the base of which is mounted an electric geared motor 3, the output shaft 30 of which is directed horizontally, parallel to the edge of the part 100 to be crimped. This direction is perpendicular to the plane of FIGS. 1 and 2.
  • the geared motor 3 rotates the shaft 30 continuously and at uniform speed, in a determined direction of rotation, illustrated by the arrow F in FIGS. 1 and 2.
  • the (fixed) axis of the rotary shaft 30 is referenced X.
  • the drive shaft 30 is integral, both in axial translation and in rotation, with an eccentric disk 4, the axis Y of which is parallel, but offset, relative to the axis X.
  • this Y axis therefore describes a rotation about the X axis.
  • a connecting rod 5 rising upwards according to a approximately vertical direction. Its upper end is also articulated, around a journal 50 which is carried by a part 6 mounted at the base of the head 2, and integral with the latter.
  • the axis Z of the journal 50 is transverse, parallel to the axes X and Y.
  • Part 6 consists of a slide guided in translation in direction vertical in the frame 1. More precisely, as illustrated in particular in FIG. 3, the frame 1 comprises two parallel vertical plates 12 joined by a cross member 11, the outside of which are fixed a pair of vertical slides 60. In the mode of illustrated embodiment, the slides 60 cooperate with ball or roller skates 61 provided on slide 6.
  • the tool 20 is therefore movable in a vertical plane, perpendicular to that of the upper face of the matrix 10.
  • the tool 20 is provided with a blank holder, of known type, comprising a plate presser 70. This is also movable in a vertical plane, parallel to the plane tool movement; it is biased elastically downwards by one or more springs 71.
  • the height positioning of the blank holder is such that the press plate 70 comes to rest against the edge of the part just before the start of the operation crimping, in order to immobilize it properly during the operation.
  • the state illustrated in Figure 1 corresponds to the release position maximum of the tool 20 relative to the part 100. It is raised to the maximum.
  • the device is arranged in such a way that the eccentric 4 is then in neutral "high", the Y axis being above and plumb with the X axis.
  • the Z axis is in the same vertical plane as the X and Y axes.
  • the positioning of the tool, the value of the eccentricity of the disc 4 - that is to say the offset between the two axes X and Y -, and the dimensioning of the assembly are such that when the eccentric finds at its "bottom” dead center (position in FIG. 2) the tool 20 is at the end of the pre-setting stroke.
  • the "go" stroke of the head 2 which corresponds to a vertical translation, from top to bottom, of the slide 6 on the slides 60, therefore results from a U-turn of the Y axis around the X axis , in direction F.
  • the connecting rod 5 oscillates slightly on the pin 50, around the axis Z.
  • the tool During its descent, the tool has a variable speed, first accelerated, approximately constant, then decelerated, to cancel out at the end of the pre-pressing.
  • the next half-turn of the eccentric, according to F causes the working head 2 to be raised relative to the part, in a vertical rectilinear movement.
  • the spring 71 relaxes, the pressing plate 70 remaining in contact with the workpiece for some time after the tool is released.
  • the part After pre-crimping, the part is transferred to a crimping device.
  • the device which has just been described makes it possible to crimp a piece by outside.
  • the matrix 10 has a concave edge 13, the shape of which corresponds to that of the edge of the piece 100, edge which can correspond to an opening closed or semi-closed crossing the room.
  • the space available inside this opening is generally very limited, the device is arranged so that only the head 2, which has been given a appropriate conformation, crosses it.
  • the slide 6 and the frame 1 are arranged at a level below that of the matrix, the slides 60 and a large part of the frame 1 being positioned outwards.
  • the operation of the device is identical to that of the first mode of production.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The device comprises a head (2) with a tool (20) which travels in a frame (1), performing a vertical reciprocating motion, applying the tool against the edge of the workpiece (100), supported by a matrix (10), on each down stroke. The tool is driven by an electric motor (3) and reduction gear unit, with the motor shaft (30) turning continuously in one direction and connected to the tool head by a cam (4) and lever (5) mechanism.

Description

La présente invention concerne une unité de sertissage du bord d'une pièce, en particulier d'une tôle, qui est supportée par une matrice.The present invention relates to a crimping unit on the edge of a part, in particular of a sheet, which is supported by a matrix.

Une méthode bien connue pour assembler deux tôles est de sertir le bord de l'une d'entre elles contre celui de l'autre.A well-known method for joining two sheets is to crimp the edge of one of them against that of the other.

Au départ, le bord qui doit être serti est plié à 90° par rapport au reste de la tôle. L'opération de présertissage consiste, dans une première étape, appelée "présertissage", à le rabattre partiellement - généralement sur un angle de 45° - en direction de l'autre tôle. Le sertissage proprement dit, réalisé dans une seconde étape, correspond au rabattement complet du bord de tôle qui vient s'appliquer contre le bord de l'autre en le pinçant.At the start, the edge to be crimped is bent at 90 ° to the rest of the sheet metal. The preserting operation consists, in a first step, called "preserting", to fold it back partially - generally at an angle of 45 ° - towards the other sheet. The actual crimping, carried out in a second step, corresponds to complete folding of the sheet metal edge which comes to rest against the edge of the other by pinching.

Conventionnellement, dans la suite de la présente description, ainsi que dans les revendications qui suivent, on entendra par la désignation "sertissage" aussi bien l'opération de présertissage que l'opération (subséquente) de sertissage proprement dit.Conventionally, in the remainder of this description, as well as in the claims which follow, the term “crimping” will be understood as well the pre-crimping operation as the (subsequent) crimping operation proper.

Ce genre d'opération se fait traditionnellement sous presse, sur table ouverte avec matrice mobile hydraulique, ou sur matrice fixe à l'aide de chariots porte-lames basculants.This kind of operation is traditionally done in press, on the table open with movable hydraulic die, or on a fixed die using slide trolleys tilting.

Il est couramment effectué dans le domaine de l'industrie automobile pour le sertissage des portes, des capots et des volets notamment.It is commonly performed in the automotive industry for the crimping of doors, hoods and shutters in particular.

Le dispositif faisant l'objet de l'invention comporte une tête de travail pourvue d'un outil de sertissage qui est guidé en translation dans un bâti et est animé d'un mouvement rectiligne de va-et-vient suivant une direction verticale de manière à décrire successivement une course descendante, dite "aller", à la fin de laquelle l'outil s'applique contre la pièce pour réaliser le sertissage, et une course ascendante, dite "retour", au cours de laquelle elle se dégage et s'écarte de la pièce.The device which is the subject of the invention comprises a working head provided with a crimping tool which is guided in translation in a frame and is animated by a rectilinear back and forth movement in a vertical direction so as to describe successively a downward stroke, called "go", at the end of which the tool is applied against the workpiece for crimping, and an upward stroke, called "return", at during which it emerges and moves away from the room.

Dans les dispositifs de ce genre, l'entraínement de la tête de travail est traditionnellement réalisé au moyen d'un vérin hydraulique à double effet.In devices of this kind, the training of the working head is traditionally made using a double-acting hydraulic cylinder.

Un inconvénient des dispositifs connus, lié à leur commande hydraulique, est qu'ils nécessitent la présence d'un générateur de pression et de circuits de distribution hydraulique. De plus, ce type d'installation est relativement bruyant, pose des problèmes de sécurité du fait des pressions élevées mises en oeuvre, et est sujet à des fuites.A drawback of known devices, linked to their hydraulic control, is that they require the presence of a pressure generator and distribution circuits hydraulic. In addition, this type of installation is relatively noisy, poses problems safety due to the high pressures used, and is subject to leaks.

Un autre inconvénient se situe dans le fait que le dispositif doit être équipé de détecteurs de position pour réaliser le pilotage du vérin, et notamment l'inversion de son alimentation hydraulique entre ses courses de travail - course "aller" - et de dégagement - course "retour" -.Another drawback is that the device must be equipped position sensors to control the actuator, and in particular the reversal of its hydraulic supply between its working strokes - "outward" stroke - and clearing - "return" race -.

L'invention se propose de résoudre ces difficultés.The invention proposes to solve these difficulties.

A cet effet, conformément à l'invention, l'entraínement de la tête de travail est réalisé au moyen d'un motoréducteur électrique dont l'arbre de sortie tourne en continu et dans un seul sens, cet arbre étant connecté à ladite tête par l'intermédiaire d'un système à excentrique et bielle.To this end, according to the invention, the training of the working head is achieved by means of an electric gear motor, the output shaft of which rotates in continuous and in one direction only, this shaft being connected to said head by means of a eccentric and connecting rod system.

Ainsi, les problèmes mentionnés plus haut, liés à l'utilisation de circuits hydrauliques, sont évités.Thus, the problems mentioned above, related to the use of circuits hydraulic, are avoided.

Aucun arrêt ni inversion de marche n'est à prévoir puisque le moteur d'entraínement tourne toujours dans le même sens, ce qui permet de réduire le temps de cycle par rapport aux dispositifs à vérins hydrauliques, d'autant plus que la vitesse de rotation peut être relativement élevée.No stopping or reversing is to be expected since the engine always rotates in the same direction, which reduces the time to cycle compared to hydraulic cylinder devices, especially as the speed of rotation can be relatively high.

Le dispositif est d'une grande simplicité.The device is very simple.

Dans un mode de réalisation préféré, les courses de travail - dite "aller" - et de dégagement - dite "retour" - de la tête de travail correspondent chacune à des rotations successives d'un demi-tour de l'arbre de sortie, le cycle complet de sertissage correspondant à un tour de cet arbre.In a preferred embodiment, the working strokes - called "outward" - and of clearance - called "return" - of the working head each correspond to rotations successive half a turn of the output shaft, the corresponding complete crimping cycle a turn from this tree.

Par ailleurs, selon un certain nombre de caractéristiques avantageuses, non limitatives, de l'invention :

  • l'arbre de sortie et l'excentrique sont positionnés en-dessous de la tête de travail, la bielle se dressant suivant une direction voisine de la verticale ;
  • les points morts haut et bas de l'axe d'excentrique autour duquel est articulée la bielle correspondent, respectivement, au début et à la fin de la course "aller" de la tête de travail ;
  • l'outil de sertissage est équipé d'un serre-flan.
Furthermore, according to a certain number of advantageous, non-limiting characteristics, of the invention:
  • the output shaft and the eccentric are positioned below the working head, the connecting rod standing in a direction close to the vertical;
  • the top and bottom dead centers of the eccentric axis around which the connecting rod is articulated correspond, respectively, to the start and the end of the "head" stroke of the working head;
  • the crimping tool is equipped with a blank holder.

D'autres caractéristiques et avantages de l'invention apparaítront de la description qui va maintenant en être faite, en référence aux dessins annexés, sur lesquels :

  • la figure 1 est une vue de côté schématique d'un dispositif de sertissage conforme à l'invention, la tête de travail étant représentée en position haute correspondant au commencement de la course "aller" ;
  • la figure 2 est une vue similaire à la figure 1, la tête de travail y étant représentée à la fin de la course "aller" ;
  • la figure 3 est une section de ce dispositif, coupé par un plan horizontal référencé III-III sur la figure 2 ;
  • la figure 4 est une vue analogue à la figure 1, montrant une variante du dispositif, qui est adaptée au sertissage d'une pièce par l'intérieur, la tête de travail étant représentée en position haute, correspondant au commencement de la course "aller" ;
  • la figure 5 est une vue partielle de la variante de la figure 4, en fin de course "aller".
Other characteristics and advantages of the invention will appear from the description which will now be made of it, with reference to the appended drawings, in which:
  • Figure 1 is a schematic side view of a crimping device according to the invention, the working head being shown in the high position corresponding to the beginning of the race "go";
  • Figure 2 is a view similar to Figure 1, the working head being shown there at the end of the race "go";
  • Figure 3 is a section of this device, cut by a horizontal plane referenced III-III in Figure 2;
  • Figure 4 is a view similar to Figure 1, showing a variant of the device, which is suitable for crimping a workpiece from the inside, the working head being shown in the high position, corresponding to the start of the stroke "go ";
  • Figure 5 is a partial view of the variant of Figure 4, at the end of the "outward" stroke.

Le dispositif illustré par les figures 1 à 3 est un dispositif de présertissage d'une pièce 100 disposée sur une matrice fixe 10, à face supérieure horizontale, sur laquelle elle est convenablement positionnée par des moyens appropriés, non représentés.The device illustrated in FIGS. 1 to 3 is a preserting device of a part 100 arranged on a fixed matrix 10, with a horizontal upper face, on which it is suitably positioned by suitable means, not shown.

Cette pièce 100, dont seulement la zone de bordure à sertir est représentée, est constituée de deux tôles superposées. Le bord de la tôle inférieure déborde latéralement par rapport à la tôle supérieure, et est relevé à angle droit, formant une languette. Celle-ci est destinée à être rabattue vers le bas, contre le bord de la tôle supérieure, pour la pincer, par l'opération de sertissage. Cette opération se fait en deux phases successives, l'une de "présertissage", au cours de laquelle la languette est rabattue à 45° environ, l'autre de "sertissage" proprement dit, au cours de laquelle elle est rabattue complètement (à 90°).This part 100, of which only the border zone to be crimped is represented, consists of two overlapping sheets. The edge of the lower sheet extends laterally relative to the upper sheet, and is raised at right angles, forming a tongue. This is intended to be folded down, against the edge of the upper sheet, for the pinch, by the crimping operation. This operation is done in two successive phases, one of "pre-crimping", during which the tongue is folded down to approximately 45 °, the other of "crimping" proper, during which it is folded down completely (at 90 °).

Dans l'exemple illustré, la tête de travail, référencée 2, est équipée d'un outil 20 réalisant ce présertissage.In the example illustrated, the working head, referenced 2, is equipped with a tool 20 carrying out this preserting.

Elle pourrait tout aussi bien être équipée d'un outil réalisant la seconde phase de l'opération, c'est-à-dire le sertissage proprement dit.It could just as easily be equipped with a tool performing the second phase of the operation, that is to say the actual setting.

Le dispositif comporte un bâti fixe 1 à la base duquel est monté un motoréducteur électrique 3 dont l'arbre de sortie 30 est dirigé horizontalement, parallèlement au rebord de la pièce 100 à sertir. Cette direction est perpendiculaire au plan des figures 1 et 2. Le motoréducteur 3 fait tourner l'arbre 30 en continu et à vitesse uniforme, dans un sens de rotation déterminé, illustré par la flèche F sur les figures 1 et 2.The device comprises a fixed frame 1 at the base of which is mounted an electric geared motor 3, the output shaft 30 of which is directed horizontally, parallel to the edge of the part 100 to be crimped. This direction is perpendicular to the plane of FIGS. 1 and 2. The geared motor 3 rotates the shaft 30 continuously and at uniform speed, in a determined direction of rotation, illustrated by the arrow F in FIGS. 1 and 2.

L'axe (fixe) de l'arbre rotatif 30 est référencé X.The (fixed) axis of the rotary shaft 30 is referenced X.

L'arbre moteur 30 est solidaire, aussi bien en translation axiale qu'en rotation, d'un disque excentré 4, dont l'axe Y est parallèle, mais décalé, par rapport à l'axe X.The drive shaft 30 is integral, both in axial translation and in rotation, with an eccentric disk 4, the axis Y of which is parallel, but offset, relative to the axis X.

Au cours de la rotation de l'arbre 30, cet axe Y décrit par conséquent une rotation autour de l'axe X.During the rotation of the shaft 30, this Y axis therefore describes a rotation about the X axis.

Sur le disque 4 s'articule une bielle 5 se dressant vers le haut suivant une direction approximativement verticale. Son extrémité haute est également articulée, autour d'un tourillon 50 qui est porté par une pièce 6 montée à la base de la tête 2, et solidaire de cette dernière.On the disc 4 is articulated a connecting rod 5 rising upwards according to a approximately vertical direction. Its upper end is also articulated, around a journal 50 which is carried by a part 6 mounted at the base of the head 2, and integral with the latter.

L'axe Z du tourillon 50 est transversal, parallèle aux axes X et Y.The axis Z of the journal 50 is transverse, parallel to the axes X and Y.

La pièce 6 consiste en un coulisseau guidé en translation en direction verticale dans le bâti 1. Plus précisément, comme illustré notamment sur la figure 3, le bâti 1 comprend deux plaques verticales parallèles 12 réunies par une traverse 11, à l'extérieur desquelles sont fixées une paire de glissières verticales 60. Dans le mode de réalisation illustré, les glissières 60 coopèrent avec des patins 61 à billes ou à rouleaux 62 prévus sur le coulisseau 6.Part 6 consists of a slide guided in translation in direction vertical in the frame 1. More precisely, as illustrated in particular in FIG. 3, the frame 1 comprises two parallel vertical plates 12 joined by a cross member 11, the outside of which are fixed a pair of vertical slides 60. In the mode of illustrated embodiment, the slides 60 cooperate with ball or roller skates 61 provided on slide 6.

L'outil 20 est par conséquent mobile dans un plan vertical, perpendiculaire à celui de la face supérieure de la matrice 10.The tool 20 is therefore movable in a vertical plane, perpendicular to that of the upper face of the matrix 10.

L'outil 20 est muni d'un serre-flan, de type connu, comprenant une plaque presseuse 70. Celle-ci est également mobile dans un plan vertical, parallèlement au plan de déplacement de l'outil ; elle est sollicitée élastiquement vers le bas par un ou plusieurs ressorts 71.The tool 20 is provided with a blank holder, of known type, comprising a plate presser 70. This is also movable in a vertical plane, parallel to the plane tool movement; it is biased elastically downwards by one or more springs 71.

Le positionnement en hauteur du serre-flan est tel que la plaque presseuse 70 vient s'appliquer contre le bord de la pièce juste avant que ne s'opère le commencement du sertissage, afin de l'immobiliser convenablement durant l'opération.The height positioning of the blank holder is such that the press plate 70 comes to rest against the edge of the part just before the start of the operation crimping, in order to immobilize it properly during the operation.

L'état illustré sur la figure 1 correspond à la position de dégagement maximal de l'outil 20 par rapport à la pièce 100. Il est relevé au maximum.The state illustrated in Figure 1 corresponds to the release position maximum of the tool 20 relative to the part 100. It is raised to the maximum.

C'est dans cette position dégagée que s'opèrent successivement l'enlèvement de la pièce qui vient d'être travaillée et la mise en place de la nouvelle pièce.It is in this cleared position that the removal takes place successively of the part that has just been worked and the installation of the new part.

Le dispositif est agencé de telle manière que l'excentrique 4 se trouve alors au point mort "haut", l'axe Y se trouvant au-dessus et à l'aplomb de l'axe X. L'axe Z se trouve dans le même plan vertical que les axes X et Y.The device is arranged in such a way that the eccentric 4 is then in neutral "high", the Y axis being above and plumb with the X axis. The Z axis is in the same vertical plane as the X and Y axes.

Le positionnement de l'outil, la valeur de l'excentricité du disque 4 - c'est-à-dire du décalage entre les deux axes X et Y -, et le dimensionnement de l'ensemble sont tels que lorsque l'excentrique se trouve à son point mort "bas" (position de la figure 2) l'outil 20 se trouve en fin de course de présertissage.The positioning of the tool, the value of the eccentricity of the disc 4 - that is to say the offset between the two axes X and Y -, and the dimensioning of the assembly are such that when the eccentric finds at its "bottom" dead center (position in FIG. 2) the tool 20 is at the end of the pre-setting stroke.

La course "aller" de la tête 2, qui correspond à une translation verticale, du haut vers le bas, du coulisseau 6 sur les glissières 60, résulte donc d'un demi-tour de l'axe Y autour de l'axe X, dans le sens F.The "go" stroke of the head 2, which corresponds to a vertical translation, from top to bottom, of the slide 6 on the slides 60, therefore results from a U-turn of the Y axis around the X axis , in direction F.

Durant ce mouvement, la bielle 5 oscille légèrement sur le tourillon 50, autour de l'axe Z. During this movement, the connecting rod 5 oscillates slightly on the pin 50, around the axis Z.

Au cours de sa descente, l'outil a une vitesse variable, d'abord accélérée, approximativement constante, puis décélérée, pour s'annuler en fin du présertissage.During its descent, the tool has a variable speed, first accelerated, approximately constant, then decelerated, to cancel out at the end of the pre-pressing.

La rotation de l'arbre moteur 30 se poursuivant, c'est la course "retour" qui s'opère ensuite.The rotation of the motor shaft 30 continuing, this is the "return" stroke which then takes place.

Le demi-tour suivant de l'excentrique, selon F, provoque le relevage de la tête de travail 2 par rapport à la pièce, selon un mouvement rectiligne vertical.The next half-turn of the eccentric, according to F , causes the working head 2 to be raised relative to the part, in a vertical rectilinear movement.

Au début du relevage, le ressort 71 se détend, la plaque presseuse 70 restant en contact avec la pièce un certain temps après que l'outil s'en soit dégagé.At the start of lifting, the spring 71 relaxes, the pressing plate 70 remaining in contact with the workpiece for some time after the tool is released.

Après le présertissage, la pièce est transférée à un dispositif de sertissage.After pre-crimping, the part is transferred to a crimping device.

Celui-ci peut être identique à celui qui vient d'être décrit, la tête de travail étant simplement équipée d'un outil de sertissage proprement dit, en lieu et place d'un outil de présertissage.This can be identical to the one just described, the working head being simply fitted with an actual crimping tool, instead of a pre-press tool.

Le dispositif qui vient d'être décrit permet de sertir une pièce par l'extérieur.The device which has just been described makes it possible to crimp a piece by outside.

Dans le cas où on a affaire à une pièce comprenant une ouverture fermée ou semi-fermée, c'est-à-dire complètement ou partiellement entourée d'un cadre, par exemple un bord arqué dont la concavité est dirigée vers l'intérieur de la pièce, le sertissage doit s'opérer par l'intérieur.In the case where we are dealing with a part comprising a closed opening or semi-closed, that is to say completely or partially surrounded by a frame, by example an arched edge whose concavity is directed towards the interior of the part, the crimping must be done from the inside.

Le dispositif des figures 4 et 5 permet de réaliser une telle opération.The device of Figures 4 and 5 allows to perform such an operation.

Pour cette variante du dispositif, on a utilisé les mêmes chiffres et lettres de référence que ceux du mode de réalisation précédent, pour désigner les éléments identiques ou similaires.For this variant of the device, the same numbers and letters were used of reference than those of the previous embodiment, to designate the elements identical or similar.

Dans cette variante, la matrice 10 a un bord concave 13, dont la forme correspond à celle du bord de la pièce 100, bord qui peut correspondre à une ouverture fermée ou semi-fermée traversant la pièce.In this variant, the matrix 10 has a concave edge 13, the shape of which corresponds to that of the edge of the piece 100, edge which can correspond to an opening closed or semi-closed crossing the room.

L'espace disponible à l'intérieur de cette ouverture étant généralement très limité, le dispositif est agencé de telle sorte que seule la tête 2, à laquelle on a donné une conformation appropriée, la traverse.The space available inside this opening is generally very limited, the device is arranged so that only the head 2, which has been given a appropriate conformation, crosses it.

Le coulisseau 6 et le bâti 1 se trouvent disposés à un niveau inférieur à celui de la matrice, les glissières 60 et une grande partie du bâti 1 se trouvant positionnés vers l'extérieur.The slide 6 and the frame 1 are arranged at a level below that of the matrix, the slides 60 and a large part of the frame 1 being positioned outwards.

Le fonctionnement du dispositif est identique à celui du premier mode de réalisation.The operation of the device is identical to that of the first mode of production.

Comme domaine d'application de l'invention, on peut citer, à titre d'exemple non limitatif, l'industrie automobile, pour le sertissage de pièces diverses telles que portes, capots et volets.As a field of application of the invention, mention may be made, by way of non-limiting example, the automotive industry, for crimping various parts such as doors, hoods and shutters.

Claims (5)

Dispositif de sertissage d'une pièce (100) supportée par une matrice (10), comportant une tête de travail (2) pourvue d'un outil de sertissage (20) qui est guidé en translation dans un bâti (1) et est animé d'un mouvement rectiligne de va-et-vient suivant une direction verticale de manière à décrire successivement une course descendante, dite "aller", à la fin de laquelle l'outil (20) s'applique contre la pièce (100) pour réaliser le sertissage, et une course ascendante, dite "retour", caractérisé par le fait que l'entraínement de ladite tête (2) est réalisé au moyen d'un motoréducteur électrique (3) dont l'arbre de sortie (30) tourne en continu et dans un seul sens (F), ledit arbre (30) étant connecté à la tête (2) par l'intermédiaire d'un système à excentrique (4) et bielle (5).Device for crimping a workpiece (100) supported by a die (10), comprising a working head (2) provided with a crimping tool (20) which is guided in translation in a frame (1) and is driven in a rectilinear movement back and forth in a vertical direction so as to successively describe a downward stroke, called "go", at the end of which the tool (20) is pressed against the part (100) to perform the crimping, and an upward stroke, called "return", characterized in that the drive of said head (2) is carried out by means of an electric gear motor (3) the output shaft (30) of which rotates continuously in one direction (F), said shaft (30) being connected to the head (2) via an eccentric system (4) and connecting rod (5). Dispositif selon la revendication 1, caractérisé par le fait que lesdites courses "aller" et "retour" de la tête (2) correspondent chacune à des rotations successives d'un demi-tour de l'arbre de sortie (30), le cycle complet de sertissage correspondant à un tour de cet arbre (30).Device according to claim 1, characterized in that the said "go" and "return" strokes of the head (2) each correspond to successive rotations half a turn of the output shaft (30), the complete crimping cycle corresponding to a turn of this tree (30). Dispositif selon la revendication 1 ou 2, caractérisé par le fait que l'arbre de sortie (30) et l'excentrique (4) sont positionnés en-dessous de la tête de travail (2), la bielle (5) se dressant suivant une direction voisine de la verticale.Device according to claim 1 or 2, characterized in that the output shaft (30) and the eccentric (4) are positioned below the working head (2), the connecting rod (5) standing in a direction close to the vertical. Dispositif selon la revendication 3, caractérisé par le fait que les points morts haut et bas de l'axe d'excentrique (Y) autour duquel est articulée la bielle (5) correspondent, respectivement, au début et à la fin de la course "aller" de la tête de travail (2).Device according to claim 3, characterized in that the points dead top and bottom of the eccentric axis (Y) around which the connecting rod (5) is articulated correspond, respectively, to the beginning and the end of the "outward" stroke of the working head (2). Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que l'outil de sertissage (20) est équipé d'un serre-flan (7).Device according to one of claims 1 to 4, characterized in that that the crimping tool (20) is equipped with a blank holder (7).
EP99460001A 1998-01-28 1999-01-15 Seaming machine Withdrawn EP0933148A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801188A FR2774010B1 (en) 1998-01-28 1998-01-28 CRIMPING DEVICE
FR9801188 1998-01-28

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EP0933148A1 true EP0933148A1 (en) 1999-08-04

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2005046905A1 (en) * 2003-11-14 2005-05-26 Ol-Ci S.R.L. A machine for working sheet metal parts, in particular a flanging machine, and a system for driving the machine
WO2015140204A1 (en) * 2014-03-20 2015-09-24 Thyssenkrupp System Engineering Gmbh Drive device for driving a tool slide in a folding system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338652A (en) 1998-06-23 1999-12-29 Biomet Merck Ltd Vertebral body replacement

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CH112641A (en) * 1924-10-09 1925-11-16 Budd Edward G Mfg Co Machine for making automobile doors.
GB2259879A (en) * 1991-09-27 1993-03-31 D V Associates Limited Press
WO1995019856A1 (en) * 1994-01-25 1995-07-27 Ab Volvo Driving device for a bending unit
WO1995025608A1 (en) * 1994-03-23 1995-09-28 Ab Volvo A device in a bending unit
FR2734184A1 (en) * 1995-05-18 1996-11-22 Peugeot Two-stage equipment for bending edge of metal sheet to form lip, used in automobile manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH112641A (en) * 1924-10-09 1925-11-16 Budd Edward G Mfg Co Machine for making automobile doors.
GB2259879A (en) * 1991-09-27 1993-03-31 D V Associates Limited Press
WO1995019856A1 (en) * 1994-01-25 1995-07-27 Ab Volvo Driving device for a bending unit
WO1995025608A1 (en) * 1994-03-23 1995-09-28 Ab Volvo A device in a bending unit
FR2734184A1 (en) * 1995-05-18 1996-11-22 Peugeot Two-stage equipment for bending edge of metal sheet to form lip, used in automobile manufacture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005046905A1 (en) * 2003-11-14 2005-05-26 Ol-Ci S.R.L. A machine for working sheet metal parts, in particular a flanging machine, and a system for driving the machine
US7487659B2 (en) 2003-11-14 2009-02-10 O.L.C.I. Engineering S.R.L. Machine for working sheet metal parts, in particular a flanging machine, and a system for driving the machine
WO2015140204A1 (en) * 2014-03-20 2015-09-24 Thyssenkrupp System Engineering Gmbh Drive device for driving a tool slide in a folding system
CN106102945A (en) * 2014-03-20 2016-11-09 蒂森克虏伯***工程有限公司 For driving the driving means of instrument slide unit in hemming system

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FR2774010A1 (en) 1999-07-30

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