WO2007045770A1 - Folding device with independent positive and negative folding arms - Google Patents

Folding device with independent positive and negative folding arms Download PDF

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Publication number
WO2007045770A1
WO2007045770A1 PCT/FR2006/002363 FR2006002363W WO2007045770A1 WO 2007045770 A1 WO2007045770 A1 WO 2007045770A1 FR 2006002363 W FR2006002363 W FR 2006002363W WO 2007045770 A1 WO2007045770 A1 WO 2007045770A1
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WO
WIPO (PCT)
Prior art keywords
folding
arms
blank
relative
folding device
Prior art date
Application number
PCT/FR2006/002363
Other languages
French (fr)
Inventor
Jean-Claude Jeandeaud
Original Assignee
Arcelor Steel Service Centres
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 Arcelor Steel Service Centres filed Critical Arcelor Steel Service Centres
Publication of WO2007045770A1 publication Critical patent/WO2007045770A1/en

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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade

Definitions

  • the present invention relates to a device for folding a blank.
  • FR-A-2,750,625 It is known from FR-A-2,750,625 to fold a metal or partially metallic blank using a device which comprises two blanks for immobilizing the blank, as well as a tool for folding this blank around an angle. , for example defined by one of the blanks.
  • This folding tool has a generally C-shaped cross section. At each of the two ends of the C, this folding tool has a free edge. For folding, a non-immobilized portion of the blank passes between the free edges of the folding tool. One of the free edges then performs folding by exerting a thrust on the non-immobilized blank portion, which tilts around the edge of the corresponding blank holder.
  • the size of the C determines the folding capacity of the device as well as the ease of release of the blank
  • the size of the arms of C determines the maximum dimension that the blank portion tilted during folding can have in a direction perpendicular to the immobilized blank portion. This maximum dimension can only be increased by increasing the size of the folding tool and therefore of the device equipped with this tool. However, beyond a certain size of the folding tool, the size of the folding device and the weight of the moving parts of this device become very important. In addition, the force applied on the arms of the C, because of the resistance to folding of the blank, tends to open the C. This effort is all the more likely to deform the structure that the arms of the C are long. Finally, in the case of making a succession of inverted pleats on the blank, each free edge of folding must be successively brought into contact with the blank. These displacements are longer as the size of the C increases, which increases the cycle time as well as the energy consumption.
  • the invention relates to a device for folding a blank comprising a support, means for immobilizing by clamping a portion of the blank, a mobile tool for folding the blank comprising two folding arms supported by a structure. and means for operating the folding tool.
  • This device is characterized in that the arms are movable relative to the structure and relative to each other, the operating means comprising on the one hand operating means of the structure to move at least in a direction substantially parallel to the immobilized blank portion and secondly, two actuators adapted to move each of the arms, independently of the other arm, in a direction substantially perpendicular to the immobilized blank portion.
  • each of the actuators is connected by a pivoting joint to the corresponding arm;
  • the actuators and the operating means are hydraulic or electric cylinders, or ball screw or roller assemblies; each of the arms is slidably mounted with respect to the structure;
  • each of the arms is connected by a pivoting joint to the structure;
  • the structure is mounted on the sliding support in a first direction, while the arms are movable relative to the structure in a second direction not parallel to the first direction;
  • the structure is a carriage which slides relative to the support in a direction substantially parallel to the immobilized blank portion, the arms being each slidably mounted or articulated on the carriage;
  • the arms are articulated on this carriage around the same axis.
  • Figure 2 is a section similar to Figure 1 for a folding device according to a second embodiment of the invention
  • Figure 3 is a section similar to Figure 1 for a folding device according to a third embodiment of the invention.
  • Figure 4 is a section similar to Figure 1 for a folding device according to a fourth embodiment of the invention.
  • the folding device 1 shown in Figure 1 comprises two blanks 3 facing one another and a tool. folding 5 mounted on a support or frame 7.
  • a blank 2 intended to be folded in a direction perpendicular to its main plane represented by the axis XX 'in Figure 1, is immobilized between the blanks 3.
  • the blank 2 is totally metallic. Alternatively, it may be a sandwich structure composite blank comprising two metal sheets and a polymer thickness between these two sheets.
  • the folding tool 5 comprises a structure 51 and two folding arms 53 and 53 'supported by this structure.
  • Each of the arms 53 and 53 ' is slidably mounted relative to the structure 51 and relative to the other arm.
  • the sliding is carried out using rectilinear guide means which, in the example, comprise respectively two ball guides 55 mounted between the structure 51 and the arm 53 and two ball guides 55 'mounted between the structure 51 and the arm 53 ', in the extension of each other.
  • the arms 53 and 53 ' are of elongated shape and comprise, at their ends remote from the structure 51, free edges 531 and 531' of thrust of the part of the blank 2 which exceeds blanks 3.
  • the structure 51 also elongated, is generally triangular section.
  • the structure 51 is slidably mounted on the support 7.
  • the sliding of the structure 51 is achieved by rectilinear guide means comprising two ball guides 9 mounted between the structure 51 and a rail 71 of the support 7, in the extension of one another.
  • An actuator 8 is articulated to the support 7 and the structure 51 so as to maneuver the latter in the direction VV of sliding of the structure 51 relative to the support 7.
  • the actuator 8 is hinged relative to the support 7 by means of a shaft 81 of axis ZZ 'perpendicular to the plane of Figure 1, and relative to the structure 51 by means of a shaft 83 of axis parallel to the axis ZZ'. Due to the triangular shape of the structure 51, its sliding relative to the support 7 in the inclined VV direction induces an overall displacement of the structure 51 and arms 53 and 53 'in the direction of the axis XX' and a direction YY 'perpendicular to the directions of the axes XX' and ZZ '.
  • Two actuators 6 and 6 ' mounted on the support 7, respectively maneuver the arms 53 and 53' independently of one another in the direction Y-Y '.
  • Each arm 53 or 53 ' is thus able to slide in the direction YY' relative to the structure 51 and to the other arm, as represented by the arrows F and F 'in FIG. 1.
  • the rods 61 and 61' actuators 6 and 6 ' are able to slide respectively relative to the arms 53 and 53' in the direction of the axis X-X ', via ball guides 4 and 4'.
  • the zone Z of interaction between each actuator 6 or 6 'and the corresponding arm 53 or 53' is variable along this arm as a function of the position of this arm in the direction of the axis X-X '.
  • the sliding assembly of the rods 61 and 61 'on the arms 53 and 53' makes it possible to maneuver the arms in the direction YY ', while taking into account the overall displacement in the direction of the axis XX' of the structure 51 and the arms 53 and 53 'resulting from the sliding of the structure 51 relative to the support 7 in the direction VV.
  • each of the actuators 6 and 6 ' can be connected by a hinge to the arm 53 or 53' corresponding.
  • the rods 61 and 61 'of the actuators 6 and 6' may for example be pivotally mounted on the arms 53 and 53 ', the actuator bodies 6 and 6 being pivoted relative to the support 7.
  • the actuators 6, 6 'and 8 are hydraulic cylinders.
  • the mobility of the structure 51 and the arms 53 and 53 ', obtained by means of the ball guides 4, 4', 9, 55 and 55 'and the actuators 6, 6' and 8, allows an optimization of the movements of the folding tool 5 to the blank 2.
  • the device 1 makes it possible to apply a folding force P as close as possible to the folding zone.
  • the device offers a large folding capacity and increases the ease of release of the blank 2 once it folded.
  • the relative mobility of the arms 53 and 53 ' makes it possible to move the two arms by anticipation as a function of the folds to be made.
  • the positive folding arm can be moved to the next folding zone while the negative folding arm is in the process of perform a folding. It is thus possible to reduce the cycle time.
  • Each arm 53 is lighter than the entire tool 5, it can reduce the energy consumed during the folding of a blank.
  • Arms 153 and 153' having free folding edges 631 and '631', are slidably mounted relative to a structure 151 of a folding tool 105 and relative to each other by means of ball guides 155 and 155 '.
  • the rods 161 and 161 'of the cylinders 106 and 106' are slidable relative to the arms 153 and 153 'in the direction of the axis X-X', by means of ball guides 104 and 104 '.
  • each of the actuators 106 and 106 ' can be connected by a pivoting joint to the corresponding arm 153 or 153'.
  • the structure 151 is a carriage slidably mounted on the support 107 via two ball guides 117.
  • the carriage 151 is movable parallel to the axis X-X ', as symbolized by arrow F 2 in FIG. 2.
  • An actuator 113 fixed on the support 107, is able to slide the carriage 151 in the direction of the axis X-X '.
  • the actuator 113 is an electric jack.
  • Arms 253 and 253 ' having free folding edges 731 and 731', are mounted. pivoting with respect to a structure 251 of a folding tool 205 and relative to to each other, as shown by the arrows R and R 'in Figure 3.
  • the arms 253 and 253' are pivoted with respect to two axes Z 253 and Z '2 53 oriented perpendicular to an axis XX' defined. the intersection of the plane of a blank 202, immobilized by blanks 203, with the plane of FIG. 3.
  • the arms 253 and 253 ' are mounted. pivoting with respect to a structure 251 of a folding tool 205 and relative to to each other, as shown by the arrows R and R 'in Figure 3.
  • the arms 253 and 253' are pivoted with respect to two axes Z 253 and Z '2 53 oriented perpendicular to an axis XX' defined. the intersection of the plane of a blank 202, immobilized by blanks
  • the rods 261 and 261 ' are pivotally mounted on the arms 253 and 253', the bodies of the cylinders 206 and 206 'being pivotable relative to the support 207, with pivot axes parallel to the axis
  • the structure 251 is a carriage slidably mounted on the support 207, by means of two ball guides 217.
  • the carriage 251 is thus movable parallel to the axis X-X ' , which symbolizes the arrow F 3 in Figure 3.
  • the structure 251 is moved by means of an electric cylinder 213 fixed on the support 7 and able to slide the structure 251 in the direction of the X-X 'axis.
  • Arms 353 and 353 ' having free folding edges 831 and 831', are mounted pivoted relative to a structure 351 of a folding tool 305 and relative to each other, as represented by the arrows R and R 'in FIG. 4.
  • the arms 353 and 353' are pivotable about the same Z axis 353 perpendicular to an axis XX 'defined by the intersection of the main plane of a blank 302, locked by hold-down clamps 303, with the plane of the FIG. 4.
  • the arms 353 and 353 ' are respectively actuated by two electric jacks 306 and 306 mounted on a support 307.
  • the rods 361 and 361' of the jacks 306 and 306 ' are pivotally mounted. on the arms 353 and 353 ', the bodies of the cylinders 306 and 306' being pivotable relative to the support 307, with pivot axes parallel to the axis Z353.
  • the structure 351 is a carriage slidably mounted on the support 307, via two ball guides 317. so that the carriage 351 is movable parallel to the axis XX ', which symbolizes the arrow F 4 in FIG. 4.
  • An actuator 313, fixed on the support 307, is able to slide the carriage 351 in the direction of the X-X 'axis.
  • the actuator 313 is an electric jack.
  • the rectilinear guide means 4, 4 ', 9, 55, 55', 104, 104 ', 117, 155, 155', 217 and 317 are ball guides.
  • other guide means may be envisaged, in particular roller guides or plane bearings.
  • the cylinders 6, 6 ', 8, 106, 106', 113, 206, 206 ', 213, 306, 306' and 313 may be replaced by ball screw or roller assemblies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The invention concerns a device (1) for folding a blank (2) comprising a support (7), means for immobilizing by clamping a portion of the blank, a mobile tool (5) for folding the blank and means for maneuvering the folding tool. The folding tool (5) comprises a structure (51) and two folding arms (53, 53') supported by said structure, the arms being mobile relative to the structure and relative to each other. The maneuvering means comprise means (8) for maneuvering the structure to move it at least along one direction (X-X') substantially parallel to the immobilized blank portion and two actuators (6, 6') designed to move (F, F') each of the arms, independently of the other arm, along a direction (Y-Y') substantially perpendicular to the immobilized blank portion (2).

Description

DISPOSITIF DE PLIAGE A BRAS DE PLIAGE POSITIF ET NEGATIF INDEPENDANTS FOLDING DEVICE WITH INDEPENDENT POSITIVE AND NEGATIVE FOLDING ARM
La présente invention a trait à un dispositif de pliage d'un flan.The present invention relates to a device for folding a blank.
Il est connu de FR-A-2 750 625 de plier un flan métallique ou partiellement métallique en utilisant un dispositif qui comporte deux serre-flans d' immobilisation du flan, ainsi qu'un outil de pliage de ce flan autour d'un angle, par exemple défini par l'un des serre-flans. Cet outil de pliage a une section transversale globalement en forme de C. A chacune des deux extrémités du C, cet outil de pliage comporte un bord libre. Pour le pliage, une portion non immobilisée du flan passe entre les bords libres de l'outil de pliage. L'un des bords libres effectue alors le pliage en exerçant une poussée sur la portion de flan non immobilisée, qui bascule autour de l'arête du serre-flan correspondant.It is known from FR-A-2,750,625 to fold a metal or partially metallic blank using a device which comprises two blanks for immobilizing the blank, as well as a tool for folding this blank around an angle. , for example defined by one of the blanks. This folding tool has a generally C-shaped cross section. At each of the two ends of the C, this folding tool has a free edge. For folding, a non-immobilized portion of the blank passes between the free edges of the folding tool. One of the free edges then performs folding by exerting a thrust on the non-immobilized blank portion, which tilts around the edge of the corresponding blank holder.
La taille du C détermine la capacité de pliage du dispositif ainsi que la facilité de dégagement du flanThe size of the C determines the folding capacity of the device as well as the ease of release of the blank
• après pliage. En effet, la taille des bras du C détermine la dimension maximale que la portion de flan basculée lors du pliage peut avoir dans une direction perpendiculaire à la portion de flan immobilisée. Cette dimension maximale ne peut être augmentée qu'en augmentant la taille de l'outil de pliage et donc du dispositif équipé de cet outil. Or, au-delà d'une certaine taille de l'outil de pliage, l'encombrement du dispositif de pliage et le poids des organes en mouvement de ce dispositif deviennent très importants. De plus, l'effort appliqué sur les bras du C, du fait de la résistance au pliage du flan, tend à ouvrir le C. Cet effort est d'autant plus susceptible de déformer la structure que les bras du C sont longs. Enfin, dans le cas de la réalisation d'une succession de plis inversés sur le flan, chaque bord libre de pliage doit être amené successivement en contact avec le flan. Ces déplacements sont d'autant plus longs que la taille du C augmente, ce qui augmente le temps de cycle ainsi que la consommation d'énergie. • after folding. Indeed, the size of the arms of C determines the maximum dimension that the blank portion tilted during folding can have in a direction perpendicular to the immobilized blank portion. This maximum dimension can only be increased by increasing the size of the folding tool and therefore of the device equipped with this tool. However, beyond a certain size of the folding tool, the size of the folding device and the weight of the moving parts of this device become very important. In addition, the force applied on the arms of the C, because of the resistance to folding of the blank, tends to open the C. This effort is all the more likely to deform the structure that the arms of the C are long. Finally, in the case of making a succession of inverted pleats on the blank, each free edge of folding must be successively brought into contact with the blank. These displacements are longer as the size of the C increases, which increases the cycle time as well as the energy consumption.
C'est à ' ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif de pliage ayant une capacité de pliage importante, avec un encombrement limité et permettant des temps de cycle courts et une faible consommation d'énergie, lors de la réalisation d'une succession de plis inversés sur un flan. Dans cet esprit, l'invention concerne un dispositif de pliage d'un flan comportant un support, des moyens d'immobilisation par serrage d'une portion du flan, un outil mobile de pliage du flan comprenant deux bras de pliage supportés par une structure et des moyens de manœuvre de l'outil de pliage. Ce dispositif est caractérisé en ce que les bras sont mobiles par rapport à la structure et l'un par rapport à l'autre, les moyens de manœuvre comportant d'une part des moyens de manœuvre de la structure pour la déplacer au moins selon une direction sensiblement parallèle à la portion de flan immobilisée et d'autre part, deux actionneurs aptes à déplacer chacun des bras, indépendamment de l'autre bras, selon une direction sensiblement perpendiculaire à la portion de flan immobilisée. Grâce à l'invention, comme les bras de l'outil de pliage sont mobiles l'un par rapport à l'autre, il est possible d'augmenter la capacité de pliage du dispositif et de faciliter le dégagement du flan après pliage, tout en conservant un encombrement limité du dispositif. De plus, les temps et énergie de cycle peuvent être optimisés dans le cas de la réalisation d'une succession de plis inversés sur le flan, puisqu'il est possible d'anticiper la position relative des deux bords de pliage en fonction des plis à réaliser. It's' What these drawbacks in particular remedy the invention by providing a folding device having a large folding capacity with a small footprint and enabling shorter cycle times and low energy consumption during the realization of a succession of reversed folds on a blank. In this spirit, the invention relates to a device for folding a blank comprising a support, means for immobilizing by clamping a portion of the blank, a mobile tool for folding the blank comprising two folding arms supported by a structure. and means for operating the folding tool. This device is characterized in that the arms are movable relative to the structure and relative to each other, the operating means comprising on the one hand operating means of the structure to move at least in a direction substantially parallel to the immobilized blank portion and secondly, two actuators adapted to move each of the arms, independently of the other arm, in a direction substantially perpendicular to the immobilized blank portion. Thanks to the invention, as the arms of the folding tool are movable relative to each other, it is possible to increase the folding capacity of the device and to facilitate the release of the blank after folding, while maintaining a limited size of the device. Moreover, the cycle times and energy can be optimized in the case of the realization of a succession of inverted folds on the blank, since it is possible to anticipate the relative position of the two folding edges according to the folds to be made.
Selon d' autres caractéristiques avantageuses de l'invention :According to other advantageous features of the invention:
- la position de la zone d'interaction de chacun des actionneurs avec le bras correspondant est variable ; - chacun des actionneurs est relié par une articulation pivotante au bras correspondant ;the position of the interaction zone of each of the actuators with the corresponding arm is variable; each of the actuators is connected by a pivoting joint to the corresponding arm;
- les actionneurs et les moyens de manœuvre sont des vérins hydrauliques ou électriques, ou des ensembles vis à billes ou à rouleaux ; - chacun des bras est monté à coulissement par rapport à la structure ;the actuators and the operating means are hydraulic or electric cylinders, or ball screw or roller assemblies; each of the arms is slidably mounted with respect to the structure;
- chacun des bras est relié par une articulation pivotante à la structure ; la structure est montée • sur le support à coulissement selon une première direction, alors que les bras sont mobiles par rapport à la structure selon une deuxième direction non parallèle à la première direction ;each of the arms is connected by a pivoting joint to the structure; the structure is mounted on the sliding support in a first direction, while the arms are movable relative to the structure in a second direction not parallel to the first direction;
- la structure est un chariot qui coulisse par rapport au support selon une direction sensiblement parallèle à la portion de flan immobilisée, les bras étant chacun montés à coulissement ou articulés sur ce chariot ;- The structure is a carriage which slides relative to the support in a direction substantially parallel to the immobilized blank portion, the arms being each slidably mounted or articulated on the carriage;
- les bras sont articulés sur ce chariot autour d'un même axe.the arms are articulated on this carriage around the same axis.
Les caractéristiques et avantages de l'invention apparaîtront dans la description qui va suivre de quatre modes de réalisation d'un dispositif de pliage selon l'invention, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés dans lesquels : - la figure 1 est une coupe schématique d' un dispositif de pliage conforme à l'invention ;The features and advantages of the invention will appear in the following description of four embodiments of a folding device according to the invention, given solely by way of example and with reference to the appended drawings in which: - Figure 1 is a schematic section of a folding device according to the invention;
- la figure 2 est une coupe analogue à la figure 1 pour un dispositif de pliage conforme à un deuxième mode de réalisation de l'invention ;- Figure 2 is a section similar to Figure 1 for a folding device according to a second embodiment of the invention;
- la figure 3 est une coupe analogue à la figure 1 pour un dispositif de pliage conforme à un troisième mode de réalisation de l'invention ; et- Figure 3 is a section similar to Figure 1 for a folding device according to a third embodiment of the invention; and
- la figure 4 est une coupe analogue à la figure 1 pour un dispositif de pliage conforme à un quatrième mode de réalisation de l'invention.- Figure 4 is a section similar to Figure 1 for a folding device according to a fourth embodiment of the invention.
Le dispositif de pliage 1 représenté à la figure 1 comporte deux serre-flans 3 en regard l'un de l'autre et un outil de. pliage 5 monté sur un support ou bâti 7. Un flan 2, destiné à être plié selon une direction perpendiculaire à son plan principal représenté par l'axe X-X' sur la figure 1, est immobilisé entre les serre-flans 3. Le flan 2 est totalement métallique. En variante, il peut s'agir d'un flan composite à structure sandwich, comprenant deux feuilles métalliques et une épaisseur de polymère située entre ces deux feuilles.The folding device 1 shown in Figure 1 comprises two blanks 3 facing one another and a tool. folding 5 mounted on a support or frame 7. A blank 2, intended to be folded in a direction perpendicular to its main plane represented by the axis XX 'in Figure 1, is immobilized between the blanks 3. The blank 2 is totally metallic. Alternatively, it may be a sandwich structure composite blank comprising two metal sheets and a polymer thickness between these two sheets.
L'outil de pliage 5 comprend une structure 51 et deux bras de pliage 53 et 53' supportés par cette structure. Chacun des bras 53 et 53' est monté à coulissement par rapport à la structure 51 et par rapport à l'autre bras. Le coulissement est réalisé à l'aide de moyens de guidage rectiligne qui, dans l'exemple, comprennent respectivement deux guides à billes 55 montés entre la structure 51 et le bras 53 et deux guides à billes 55' montés entre la structure 51 et le bras 53' , dans le prolongement les uns des autres.The folding tool 5 comprises a structure 51 and two folding arms 53 and 53 'supported by this structure. Each of the arms 53 and 53 'is slidably mounted relative to the structure 51 and relative to the other arm. The sliding is carried out using rectilinear guide means which, in the example, comprise respectively two ball guides 55 mounted between the structure 51 and the arm 53 and two ball guides 55 'mounted between the structure 51 and the arm 53 ', in the extension of each other.
Les bras 53 et 53' sont de forme allongée et comportent, au niveau de leurs extrémités éloignées de la structure 51, des bords libres 531 et 531' de poussée de la partie du flan 2 qui dépasse des serre-flans 3. La structure 51, également de forme allongée, est à section globalement triangulaire. La structure 51 est montée à coulissement sur le support 7. Le coulissement de la structure 51 est réalisé à l'aide de moyens de guidage rectiligne comprenant deux guides à billes 9 montés entre la structure 51 et un rail 71 du support 7, dans le prolongement l'un de l'autre.The arms 53 and 53 'are of elongated shape and comprise, at their ends remote from the structure 51, free edges 531 and 531' of thrust of the part of the blank 2 which exceeds blanks 3. The structure 51, also elongated, is generally triangular section. The structure 51 is slidably mounted on the support 7. The sliding of the structure 51 is achieved by rectilinear guide means comprising two ball guides 9 mounted between the structure 51 and a rail 71 of the support 7, in the extension of one another.
Un actionneur 8 est articulé au support 7 et à la structure 51 de manière à manœuvrer cette dernière selon la direction V-V de coulissement de la structure 51 par rapport au support 7. L' actionneur 8 est articulé par rapport au support 7 au moyen d'un arbre 81 d'axe Z-Z' perpendiculaire au plan de la figure 1, et par rapport à la structure 51 au moyen d'un arbre 83 d'axe parallèle à l'axe Z-Z' . Du fait de la forme triangulaire de la structure 51, son coulissement par rapport au support 7 selon la direction V-V inclinée induit un déplacement global de la structure 51 et des bras 53 et 53' selon la direction de l'axe X-X' et une direction Y-Y' perpendiculaire aux directions des axes X-X' et Z-Z' .An actuator 8 is articulated to the support 7 and the structure 51 so as to maneuver the latter in the direction VV of sliding of the structure 51 relative to the support 7. The actuator 8 is hinged relative to the support 7 by means of a shaft 81 of axis ZZ 'perpendicular to the plane of Figure 1, and relative to the structure 51 by means of a shaft 83 of axis parallel to the axis ZZ'. Due to the triangular shape of the structure 51, its sliding relative to the support 7 in the inclined VV direction induces an overall displacement of the structure 51 and arms 53 and 53 'in the direction of the axis XX' and a direction YY 'perpendicular to the directions of the axes XX' and ZZ '.
Deux actionneurs 6 et 6', montés sur le support 7, manœuvrent respectivement les bras 53 et 53' indépendamment l'un de l'autre selon la direction Y-Y'. Chaque bras 53 ou 53' est ainsi à même de coulisser selon la direction Y-Y' par rapport à la structure 51 et à l'autre bras, comme représenté par les flèches F et F' à la figure 1. Les tiges 61 et 61' des actionneurs 6 et 6' sont aptes à coulisser respectivement par rapport aux bras 53 et 53' selon la direction de l'axe X-X', via des guides à billes 4 et 4'. Ainsi, la zone Z d'interaction entre chaque actionneur 6 ou 6' et le bras 53 ou 53' correspondant est variable le long de ce bras en fonction de la position de ce bras selon la direction de l'axe X-X'. Le montage coulissant des tiges 61 et 61' sur les bras 53 et 53' permet de manœuvrer les bras selon la direction Y-Y' , tout en tenant compte du déplacement global selon la direction de l'axe X-X' de la structure 51 et des bras 53 et 53' résultant du coulissement de la structure 51 par rapport au support 7 selon la direction V-V .Two actuators 6 and 6 ', mounted on the support 7, respectively maneuver the arms 53 and 53' independently of one another in the direction Y-Y '. Each arm 53 or 53 'is thus able to slide in the direction YY' relative to the structure 51 and to the other arm, as represented by the arrows F and F 'in FIG. 1. The rods 61 and 61' actuators 6 and 6 'are able to slide respectively relative to the arms 53 and 53' in the direction of the axis X-X ', via ball guides 4 and 4'. Thus, the zone Z of interaction between each actuator 6 or 6 'and the corresponding arm 53 or 53' is variable along this arm as a function of the position of this arm in the direction of the axis X-X '. The sliding assembly of the rods 61 and 61 'on the arms 53 and 53' makes it possible to maneuver the arms in the direction YY ', while taking into account the overall displacement in the direction of the axis XX' of the structure 51 and the arms 53 and 53 'resulting from the sliding of the structure 51 relative to the support 7 in the direction VV.
En variante, chacun des actionneurs 6 et 6' peut être relié par une articulation au bras 53 ou 53' correspondant. Les tiges 61 et 61' des actionneurs 6 et 6' peuvent par exemple être montées pivotantes sur les bras 53 et 53' , les corps des actionneurs 6_ et 6' étant pivotants par rapport au support 7.Alternatively, each of the actuators 6 and 6 'can be connected by a hinge to the arm 53 or 53' corresponding. The rods 61 and 61 'of the actuators 6 and 6' may for example be pivotally mounted on the arms 53 and 53 ', the actuator bodies 6 and 6 being pivoted relative to the support 7.
Dans l'exemple représenté, les actionneurs 6, 6' et 8 sont des vérins hydrauliques. La mobilité de la structure 51 et des bras 53 et 53' , obtenue au moyen des guides à billes 4, 4', 9, 55 et 55' et des actionneurs 6, 6' et 8, permet une optimisation des mouvements de l'outil de pliage 5 vers le flan 2. Ainsi, le dispositif 1 permet d' appliquer un effort de pliage P au plus près de la zone de pliage. De plus, du fait de la mobilité relative des bras 53 et 53' l'un par rapport à l'autre, le dispositif offre une capacité de pliage importante et augmente la facilité de dégagement du flan 2 une fois celui-ci plié. Enfin, la mobilité relative des bras 53 et 53' permet de déplacer les deux bras par anticipation en fonction des plis à réaliser. Par exemple, dans le cas d'une succession de plis inversés, positifs et négatifs, à réaliser sur le flan 2, le bras de pliage positif peut être déplacé vers la zone de pliage suivante pendant que le bras de pliage négatif est en train d'effectuer un pliage. Il est ainsi possible de diminuer le temps de cycle. Chaque bras 53 étant plus léger que l'ensemble de l'outil 5, on peut diminuer l'énergie consommée lors du pliage d'un flan. Dans le deuxième mode de réalisation représenté à la figure 2, les éléments analogues à ceux' du premier mode de réalisation portent des références identiques augmentées de 100. Des bras 153 et 153', comportant des bords libres de pliage 631 et' 631' , sont montés à coulissement par rapport à une structure 151 d'un outil de pliage 105 et l'un par rapport à l'autre au moyen de guides à billes 155 et 155' . Les bras 153 et 153' sont actionnés respectivement par deux vérins électriques 106 et 106' montés sur un support 107. Les bras 153 et 153' sont ainsi à même de coulisser par rapport à la structure 151 et l'un par rapport à l'autre comme représenté par les flèches F et F' , selon une direction Y-Y' perpendiculaire à un axe X-X' défini par l'intersection du plan principal d'un flan 102, immobilisé par des • serre-flans 103, avec le plan de la figure 2. Les tiges 161 et 161' des vérins 106 et 106' sont aptes à coulisser par rapport aux bras 153 et 153' selon la direction de l'axe X-X', grâce à des guides à billes 104 et 104'. En variante, chacun des actionneurs 106 et 106' peut être relié par une articulation pivotante au bras 153 ou 153' correspondant.In the example shown, the actuators 6, 6 'and 8 are hydraulic cylinders. The mobility of the structure 51 and the arms 53 and 53 ', obtained by means of the ball guides 4, 4', 9, 55 and 55 'and the actuators 6, 6' and 8, allows an optimization of the movements of the folding tool 5 to the blank 2. Thus, the device 1 makes it possible to apply a folding force P as close as possible to the folding zone. In addition, because of the relative mobility of the arms 53 and 53 'relative to each other, the device offers a large folding capacity and increases the ease of release of the blank 2 once it folded. Finally, the relative mobility of the arms 53 and 53 'makes it possible to move the two arms by anticipation as a function of the folds to be made. For example, in the case of a succession of reverse folds, positive and negative, to be made on the blank 2, the positive folding arm can be moved to the next folding zone while the negative folding arm is in the process of perform a folding. It is thus possible to reduce the cycle time. Each arm 53 is lighter than the entire tool 5, it can reduce the energy consumed during the folding of a blank. In the second embodiment shown in Figure 2, the elements analogous to those 'of the first embodiment bear identical references increased by 100. Arms 153 and 153', having free folding edges 631 and '631', are slidably mounted relative to a structure 151 of a folding tool 105 and relative to each other by means of ball guides 155 and 155 '. The arms 153 and 153 'are actuated respectively by two electric cylinders 106 and 106' mounted on a support 107. The arms 153 and 153 'are thus able to slide with respect to the structure 151 and with respect to the other as represented by the arrows F and F ', in a direction YY' perpendicular to an axis XX 'defined by the intersection of the main plane of a blank 102, immobilized by • blanks 103, with the plane of the Figure 2. The rods 161 and 161 'of the cylinders 106 and 106' are slidable relative to the arms 153 and 153 'in the direction of the axis X-X', by means of ball guides 104 and 104 '. In a variant, each of the actuators 106 and 106 'can be connected by a pivoting joint to the corresponding arm 153 or 153'.
La structure 151 est un chariot monté à coulissement sur le support 107, par l'intermédiaire de deux guides à billes 117. Ainsi, le chariot 151 est mobile parallèlement à l'axe X-X', ce que symbolise la flèche F2 à la figure 2. Un actionneur 113, fixé sur le support 107, est apte à faire coulisser le chariot 151 dans la direction de l'axe X-X'. L' actionneur 113 est un vérin électrique.The structure 151 is a carriage slidably mounted on the support 107 via two ball guides 117. Thus, the carriage 151 is movable parallel to the axis X-X ', as symbolized by arrow F 2 in FIG. 2. An actuator 113, fixed on the support 107, is able to slide the carriage 151 in the direction of the axis X-X '. The actuator 113 is an electric jack.
Dans le troisième mode de réalisation représenté à la figure 3, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 200. Des bras 253 et 253', comportant des bords libres de pliage 731 et 731' , sont montés pivotants par rapport à une structure 251 d'un outil de pliage 205 et l'un par rapport à l'autre, comme représenté par les flèches R et R' à la figure 3. Les bras 253 et 253' sont pivotants par rapport à deux axes Z253 et Z' 253 orientés perpendiculairement à un axe X-X' défini par. l'intersection du plan d'un flan 202, immobilisé par des serre-flans 203, avec le plan de la figure 3. Les bras 253 et 253'. sont actionnés respectivement par deux vérins électriques 206 et 206' montés sur un support 207. Les vérins 206 et 206' sont reliés par une articulation pivotante au bras 253 ou 253' correspondant. Dans l'exemple représenté, les tiges 261 et 261' sont montées pivotantes sur les bras 253 et 253' , les corps des vérins 206 et 206' étant pivotants par rapport au support 207, avec des axes de pivotement parallèles à l'axeIn the third embodiment shown in FIG. 3, elements similar to those of the first embodiment bear identical references increased by 200. Arms 253 and 253 ', having free folding edges 731 and 731', are mounted. pivoting with respect to a structure 251 of a folding tool 205 and relative to to each other, as shown by the arrows R and R 'in Figure 3. The arms 253 and 253' are pivoted with respect to two axes Z 253 and Z '2 53 oriented perpendicular to an axis XX' defined. the intersection of the plane of a blank 202, immobilized by blanks 203, with the plane of FIG. 3. The arms 253 and 253 '. are respectively actuated by two electric cylinders 206 and 206 'mounted on a support 207. The cylinders 206 and 206' are connected by a pivoting joint to the corresponding arm 253 or 253 '. In the example shown, the rods 261 and 261 'are pivotally mounted on the arms 253 and 253', the bodies of the cylinders 206 and 206 'being pivotable relative to the support 207, with pivot axes parallel to the axis
Z253 - Comme dans le deuxième mode de réalisation, la structure 251 est un chariot monté à coulissement sur le support 207, par l'intermédiaire de deux guides à billes 217. Le chariot 251 est ainsi mobile parallèlement à l'axe X-X', ce que symbolise la flèche F3 à la figure 3. Comme dans le deuxième mode de réalisation, la structure 251 est déplacée au moyen d'un vérin électrique 213 fixé sur le support 7 et apte à faire coulisser la structure 251 dans la direction de l'axe X-X'. • Z253 - As in the second embodiment, the structure 251 is a carriage slidably mounted on the support 207, by means of two ball guides 217. The carriage 251 is thus movable parallel to the axis X-X ' , which symbolizes the arrow F 3 in Figure 3. As in the second embodiment, the structure 251 is moved by means of an electric cylinder 213 fixed on the support 7 and able to slide the structure 251 in the direction of the X-X 'axis. •
Dans le quatrième mode de réalisation représenté à la figure 4, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 300. Des bras 353 et 353', comportant des bords libres de pliage 831 et 831' , sont montés pivotants par rapport à une structure 351 d'un outil de pliage 305 et l'un par rapport à l'autre, comme représenté par les flèches R et R' à la figure 4. Les bras 353 et 353' sont pivotants autour d'un même axe Z353 orienté perpendiculairement à un axe X-X' défini par l'intersection du plan principal d'un flan 302, immobilisé par des serre-flans 303, avec le plan de la figure 4. Les bras 353 et 353' sont actionnés respectivement par deux vérins électriques 306 • et 306' montés sur un support 307. Comme dans le troisième mode de réalisation, les tiges 361 et 361' des vérins 306 et 306' sont montées pivotantes sur les bras 353 et 353' , les corps des vérins 306 et 306' étant pivotants par rapport au support 307, avec des axes de pivotement parallèles à l'axe Z353.In the fourth embodiment shown in FIG. 4, elements similar to those of the first embodiment carry identical references increased by 300. Arms 353 and 353 ', having free folding edges 831 and 831', are mounted pivoted relative to a structure 351 of a folding tool 305 and relative to each other, as represented by the arrows R and R 'in FIG. 4. The arms 353 and 353' are pivotable about the same Z axis 353 perpendicular to an axis XX 'defined by the intersection of the main plane of a blank 302, locked by hold-down clamps 303, with the plane of the FIG. 4. The arms 353 and 353 'are respectively actuated by two electric jacks 306 and 306 mounted on a support 307. As in the third embodiment, the rods 361 and 361' of the jacks 306 and 306 'are pivotally mounted. on the arms 353 and 353 ', the bodies of the cylinders 306 and 306' being pivotable relative to the support 307, with pivot axes parallel to the axis Z353.
La structure 351 est un chariot monté à coulissement sur le support 307, par l'intermédiaire de deux guides à billes 317, . de telle sorte que le chariot 351 est mobile parallèlement à l'axe X-X' ce que symbolise la flèche F4 à la figure 4. Un actionneur 313, fixé sur le support 307, est apte à faire coulisser le chariot 351 dans la direction de l'axe X-X'. L' actionneur 313 est un vérin électrique.The structure 351 is a carriage slidably mounted on the support 307, via two ball guides 317. so that the carriage 351 is movable parallel to the axis XX ', which symbolizes the arrow F 4 in FIG. 4. An actuator 313, fixed on the support 307, is able to slide the carriage 351 in the direction of the X-X 'axis. The actuator 313 is an electric jack.
Dans les quatre modes de réalisation décrits, correspondant aux dispositifs de pliage 1, 101, 201 et 301, les moyens de guidage rectiligne 4, 4', 9, 55, 55', 104, 104', 117, 155, 155', 217 et 317 sont des guides à billes. Cependant, d'autres moyens de guidage peuvent être envisagés, notamment des guides à rouleaux ou des paliers plans. De même, les vérins 6, 6', .8, 106, 106', 113, 206, 206' , 213, 306, 306' et 313 peuvent être remplacés par des ensembles vis à billes ou à rouleaux. In the four embodiments described, corresponding to the folding devices 1, 101, 201 and 301, the rectilinear guide means 4, 4 ', 9, 55, 55', 104, 104 ', 117, 155, 155', 217 and 317 are ball guides. However, other guide means may be envisaged, in particular roller guides or plane bearings. Similarly, the cylinders 6, 6 ', 8, 106, 106', 113, 206, 206 ', 213, 306, 306' and 313 may be replaced by ball screw or roller assemblies.

Claims

REVENDICATIONS
1. Dispositif (1 ; 101 ; 201 ; 301) de pliage d'un flan (2 ; 102 ; 202 ; 302) comportant : - un support (7 ; 107 ; 207 ; 307),1. Device (1; 101; 201; 301) for folding a blank (2; 102; 202; 302) comprising: - a support (7; 107; 207; 307);
- des moyens (3 ; 103 ; 203 ; 303) d'immobilisation par serrage d'une portion de flan,means (3; 103; 203; 303) for clamping a portion of a blank,
' - un outil (5 ; 105 ; 205 ; 305) mobile de pliage du flan comprenant deux bras (53, 53' ; 153, 153' • ; 253, 253' ; 353, 353') de pliage supportés par une structure (51 ; 151 ; 251 ; 351) et '- a tool (5; 105; 205; 305) blank of the folding mobile comprising two arms (53, 53'; 153, 153 '•; 253, 253'; 353, 353 ') bending borne by a structure ( 51; 151; 251; 351) and
- des moyens de manœuvre de l'outil de pliage, caractérisé en ce que lesdits bras sont mobiles par rapport à ladite structure et l'un par rapport à l'autre, et en ce que lesdits moyens de manœuvre comportent, d'une part, des moyens (8 ; 113 ; 213 ; 313) de manœuvre de ladite structure pour la déplacer au moins selon une direction (X- X' ) sensiblement parallèle à ladite portion de flan immobilisée et, d'autre part, deux actionneurs (6, 6' ; 106, 106' ; 206, 206' ; 306, 306') aptes à déplacer chacun desdits bras, indépendamment de l'autre bras, selon une direction (Y-Y' ) sensiblement perpendiculaire à ladite portion de flan immobilisée.- Maneuvering means of the folding tool, characterized in that said arms are movable relative to said structure and relative to each other, and in that said maneuvering means comprise, on the one hand means (8; 113; 213; 313) for operating said structure to move it at least in a direction (X-X ') substantially parallel to said immobilized blank portion and secondly to two actuators (6 , 6 ', 106, 106', 206, 206 ', 306, 306') adapted to move each of said arms, independently of the other arm, in a direction (YY ') substantially perpendicular to said immobilized blank portion.
2. Dispositif de pliage selon la revendication 1, caractérisé en ce que la position de la zone (Z) d'interaction de chacun desdits actionneurs (6, 6' ; 106, 106') et dudit bras correspondant (53, 53' ; 153, 153') est variable .2. Folding device according to claim 1, characterized in that the position of the zone (Z) interaction of each of said actuators (6, 6 '; 106, 106') and said corresponding arm (53, 53 '; 153, 153 ') is variable.
3. Dispositif de pliage selon la revendication 1, caractérisé en ce que chacun desdits actionneurs (206,Folding device according to claim 1, characterized in that each of said actuators (206,
206'-; 306, 306') est relié par une articulation pivotante au bras correspondant (253, 253' ; 353, 353' ) .206'-; 306, 306 ') is connected by a pivoting joint to the corresponding arm (253, 253'; 353, 353 ').
4. Dispositif de pliage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdits actionneurs (6, 6' ; 106, 106' ; 206, 206' ; 306, 306') et/ou lesdits moyens (8 ; 113 ; 213 ; 313) de manœuvre sont des vérins hydrauliques ou électriques.4. Folding device according to any one of claims 1 to 3, characterized in that said actuators (6, 6 '; 106, 106'; 206, 206 '; 306, 306') and / or said actuating means (8; 113; 213; 313) are hydraulic or electric cylinders.
5. Dispositif de pliage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdits actionneurs (6, 6' ; 106, 106' ; 206, 206' ; 306, 306') et/ou lesdits moyens (8 ; 113 ; 213 ; 313) de manœuvre sont des ensembles vis à billes ou à rouleaux.5. Folding device according to any one of claims 1 to 3, characterized in that said actuators (6, 6 ', 106, 106', 206, 206 ', 306, 306') and / or said means (8 113, 213, 313) are screw ball or roller assemblies.
6. Dispositif de pliage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que chacun desdits bras (53, 53' ; 153, 153') est monté à coulissement par rapport à ladite structure (51 ; 151) .6. Folding device according to any one of claims 1 to 5, characterized in that each of said arms (53, 53 ', 153, 153') is slidably mounted relative to said structure (51; 151).
7. Dispositif de pliage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que chacun desdits bras (253, 253' ; 353, 353' ) est relié par une articulation pivotante à ladite structure (251 ; 351) .Folding device according to any one of claims 1 to 5, characterized in that each of said arms (253, 253 ', 353, 353') is connected by a pivoting joint to said structure (251; 351).
8. Dispositif de pliage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ladite structure (51) est montée sur ledit support (7) à coulissement selon une première direction (V-V ) , alors que lesdits bras (53, 53' ) sont mobiles par rapport à ladite structure selon une deuxième direction (Y-Y' ) non parallèle à ladite première direction (V-V ) .8. Folding device according to any one of claims 1 to 7, characterized in that said structure (51) is mounted on said support (7) to slide in a first direction (VV), whereas said arms (53, 53 ') are movable relative to said structure in a second direction (YY') not parallel to said first direction (VV).
9. Dispositif de pliage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ladite structure (151 ; 251 ; 351) est un chariot qui coulisse9. Folding device according to any one of claims 1 to 7, characterized in that said structure (151; 251; 351) is a sliding carriage
(F2 ; F3 ; F4) par rapport audit support (107 ; 207 ; 307) selon une direction (X-X' ) sensiblement parallèle à ladite portion de flan (102 ; 202 ; 302) immobilisée, lesdits bras (153, 153' ; 253, 253' ; 353, 353') étant chacun montés à coulissement ou articulés sur ledit chariot (151 ; 251 ;(F 2 ; F 3 ; F 4 ) relative to said support (107; 207; 307) in a direction (XX ') substantially parallel to said immobilized blank portion (102; 202; 302), said arms (153, 153 253, 253 ', 353, 353') each being slidably mounted or articulated on said carriage (151; 251;
351) .351).
10. Dispositif de pliage selon la revendication 9, caractérisé en ce que lesdits bras (353, 353' ) sont articulés sur ledit chariot (351) autour d'un même axe (Z353) - Folding device according to claim 9, characterized in that said arms (353, 353 ') are articulated on said carriage (351) around the same axis (Z 353 ) -
PCT/FR2006/002363 2005-10-21 2006-10-20 Folding device with independent positive and negative folding arms WO2007045770A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05356189.0 2005-10-21
EP05356189A EP1777017A1 (en) 2005-10-21 2005-10-21 Bending machine with positive and negative bending arms working independently from each other

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WO2007045770A1 true WO2007045770A1 (en) 2007-04-26

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CN105458044A (en) * 2016-01-13 2016-04-06 江苏比微曼智能科技有限公司 Universal bending machine
CN110405010A (en) * 2019-08-21 2019-11-05 佛山市镭戈斯数控设备有限公司 A kind of automatic bending machine

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IT1403993B1 (en) * 2011-01-28 2013-11-08 Xp Technology S R L MACHINE TOOL PANEL MACHINE WITH IMPROVED HANDLING OF THE DISHWASHER DEVICE
ITUB20160836A1 (en) 2016-02-18 2017-08-18 Olma S R L Bending unit of a paneling machine tool
CN106825140B (en) * 2017-03-13 2019-02-01 王安基 Double-bending equipment and bending machine

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CN105458044A (en) * 2016-01-13 2016-04-06 江苏比微曼智能科技有限公司 Universal bending machine
CN110405010A (en) * 2019-08-21 2019-11-05 佛山市镭戈斯数控设备有限公司 A kind of automatic bending machine

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