EP1314493A1 - Apparatus for successively forming portions of tubes - Google Patents

Apparatus for successively forming portions of tubes Download PDF

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Publication number
EP1314493A1
EP1314493A1 EP02292802A EP02292802A EP1314493A1 EP 1314493 A1 EP1314493 A1 EP 1314493A1 EP 02292802 A EP02292802 A EP 02292802A EP 02292802 A EP02292802 A EP 02292802A EP 1314493 A1 EP1314493 A1 EP 1314493A1
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EP
European Patent Office
Prior art keywords
axis
base
tube
housing
head
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Granted
Application number
EP02292802A
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German (de)
French (fr)
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EP1314493B1 (en
Inventor
Robert Humbert
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Humbert Robert
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Humbert Robert
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    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles

Definitions

  • the present invention relates to devices for forming portions of tube or the like successively one after the other to make for example bellows, wavy, or any other shape given to portions of initially cylindrical tube under the action of forces, for example exerted by a fluid under pressure or the like with respect to a reference surface like the wall of a mold or the like which generates reaction forces.
  • these devices include a base as a frame or the like, two forming jaws for defining a housing in which is adapted to be formed each portion of tube and means for control the movement of the two jaws relative to each other by so as to either open the housing or close it.
  • It also includes means for successively positioning each portion of tube in the housing when it is open, and means for order the forming of a portion of tube when it is placed in the housing and that the latter is in its closed position.
  • These means for successively positioning each portion of tube in the housing when it is open essentially have a sleeve which is suitable for carrying the portion of tube and means for moving the sleeve successively in the housing between the jaws and outside of it.
  • a portion of the tube is plugged into the sleeve when it is located in outside the housing, then the sleeve carrying the tube portion is moved to be positioned in the housing. The forming of the tube portion is then then the sleeve carrying the portion of tube formed is removed from the housing. The portion of tube formed is removed from the sleeve and replaced by a new portion of tube to be formed, and so on for all portions of tube to be formed.
  • the object of the present invention is therefore to produce a forming device of portions of tube or the like successively one after the other, to a single forming housing, which reduces the production time of a plurality of tube portions formed with respect to production time with the devices of the prior art.
  • Figures 1 and 2 show, in schematic form, respectively in front and side view, an embodiment of a device for forming tube portions or the like according to the invention.
  • the object of the invention comprises "at least one" element having a given function
  • the described embodiment may include several of these elements.
  • FIGS. 1 and 2 represent an advantageous embodiment of a device for forming tube portions T 1 , T 2 , ..., T n , T n + 1 , ... or the like successively. one after the other.
  • the device comprises a base 1 such as a chassis or the like, two forming jaws 2, 3 to define a housing 4 in which each portion of tube T 1 , T 2 , ..., T n is capable of being formed, this housing being defined along a first axis 6, and means shown diagrammatically 5 for controlling the movement of the two jaws 2, 3 relative to each other and relative to the base 1 so as to obtain either the opening of the housing 4 or its closure.
  • the opening and closing of the housing can be obtained by rotation and / or translation of the two jaws.
  • FIG. 2 the position of the jaws when the housing is open is represented in fine broken lines and designated by the reference M o while their position when the housing is closed is represented in thick broken lines and designated by the reference M f .
  • the jaws 2 and 3 are shown diagrammatically in the closed position M f .
  • the device also comprises means 20 for successively positioning each portion of tube T n in the housing 4 when it is open, and means 10 for controlling the forming of each portion of tube when it is placed in the housing and when the latter is in its closed position.
  • the means 20 for positioning each portion of tube in the housing 4 when it is open comprise a base 21, means 22 for moving this base 21 in rotation around a second axis 23 relative to the base 1, by a determined angle ⁇ so that the base can take at least two first and second determined positions P 1 , P 2 respectively represented in solid lines and in broken lines in FIG. 2.
  • This second axis 23 is further defined by so that it is parallel to the first axis 6 and located at a non-zero distance ⁇ from this first axis 6.
  • They also include a head 24, at least two sleeves 25, 26, as illustrated in the two figures, each capable of carrying a portion of tube T n , means 27, 28, like lugs or the like, for securing these two sleeves with the head 24 so that the two sleeves 25, 26 are respectively located on two third 29 and fourth 30 axes competing at a point of competition 31 which remains constantly located at a distance from the second axis 23 equal to ⁇ and outside the housing 4 whatever the position of the base as described below.
  • the device comprises two sleeves, but it could be conceivable that it has more than two, regularly angularly distributed around the head 24. However, if this realization is theoretically possible, it does not have enough advantages in practice.
  • These means 20 further comprise means 32 for mounting the head 24 in rotation relative to the base 21 around a fifth axis 33 defined on the bisector of the angle ⁇ and so, firstly that this fifth axis 33 forms, with the direction of the second axis 23, an angle equal to ⁇ / 2, the second, third, fourth and fifth axes 23, 29, 30, 33 being coplanar, and on the other hand that the head 24 is driven in the same rotation as that of the base 4 when the latter passes from one of its two positions P 1 , P 2 to the other. It is further specified that the first position P 1 of the base is defined so that the point of competition 31 is located on the first axis 6.
  • the means 32 for mounting the head 24 in rotation relative to the base 21 are formed, as more particularly illustrated in FIG. 1, by a motor 40 comprising a stator 41 and a rotor 42, the stator being secured to the base 21 and the head 24 secured to the rotor 42, the stator 41 being secured to the base 21 so that the axis of the rotor 42 is confused with the bisector of the angle ⁇ .
  • these means 20 also include means 34 for controlling step by step the rotation of the head 24 relative to the base 21, each step having a value of 180 ° when the number of sleeves is equal to two as in the mode illustrated in Figures 1 and 2, which is in fact the preferred embodiment which gives the best results taking into account the size of the device, the cost of its manufacture and the speed of production of the portions of tube T n with this device.
  • These means 34 are advantageously constituted by means electric known in themselves for controlling the motor 40 defined above. These electrical means are capable of issuing successive orders, each order applied to the motor input controlling the rotation of the rotor by an angle of 180 °.
  • the device includes means for plugging a portion of tube T n onto one of the two sleeves 25, 26 when it is outside the housing 4 when the other is located in the housing and means to grasp and remove a portion of tube formed T n fitted on a sleeve 25, 26 when the latter has left the housing 4 by passing the base 21 from its first position P 1 to its second position P 2 .
  • the angle ⁇ is equal to 90 degrees, as illustrated in Figures 1 and 2.
  • the value of the angle ⁇ mentioned above is, in turn, determined so that, in the second position P 2 of the base 21, one of the two sleeves 25, 26 associated with the head 24, when it is located on an axis parallel to the second axis 23, can be outside the space defined between the two jaws 2, 3 when the housing 4 is open, M o .
  • the first and second axes 6, 23 are horizontal and located in a vertical plane, the first axis 6 being in additionally located above the second axis 23.
  • the axis of the sleeve on which a portion of tube T n to be formed is inserted is vertical and this sleeve is located above the horizontal plane containing the first axis 6.
  • the device also comprises means 50 for holding a portion of tube T n on a sleeve 25, 26 after it has been inserted thereon.
  • These means 50 illustrated schematically in the figures, may for example be constituted by spring pawls or the like which exert on these tube portions sufficient forces to keep them on the sleeves when the latter are in motion, while allowing to remove the tube portions under the action simply of a tensile force slightly greater than those exerted by these pawls.
  • the base 21 is controlled to rotate about the axis 23 and passes from its position P 1 to its position P 2 , FIG. 2.
  • the sleeve 25 carrying the portion of tube T n formed comes out of the housing 4.
  • the portion of tube T n formed is removed from the sleeve 25 by means of robot tongs or the like.
  • the base being always in its second position P 2
  • the head 24 is rotated around the axis 33, by an angle of 180 °.
  • the sleeve 26 carrying the tube portion T n + 1 to be formed takes the place of the sleeve 25 released from the tube portion T n formed and this sleeve 25 takes the place of the sleeve 26.
  • the base 21 returns from its second position P 2 to its first position P 1 .
  • the sleeve 26 carrying the new portion of tube T n + 1 to be formed is positioned between the jaws 2, 3, and the sleeve 25 is positioned vertically.
  • the jaws 2, 3 pass from their opening position of the housing M o to their closing position M f , the forming of the tube portion T n + 1 by the forming means 10 is controlled, and on the other hand a new portion of tube T n + 2 is brought and inserted on the sleeve 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Forging (AREA)
  • Heat Treatment Of Articles (AREA)
  • External Artificial Organs (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The apparatus, designed to shape a series of tube sections (Tn, Tn + 1) one after another, consists of a base (1), a pair of shaping jaws (2, 3) designed to form a cavity in which each tube section is shaped, a control system (5) for moving the jaws relative to one another and the base, and a tube section positioner (20). The positioner comprises a base (21) and a mechanism (22) for rotating the base about an axis (23) parallel to the axis (6) of the cavity between two set positions. It also has a head (24) and two sleeves (25, 26) to place the tube sections in the cavity and withdraw them after shaping.

Description

La présente invention concerne les dispositifs de formage de portions de tube ou analogues successivement l'une après l'autre pour réaliser par exemple des soufflets, des onduleux, ou toutes autres formes données à des portions de tube initialement cylindriques sous l'action de forces, par exemple exercées par un fluide sous pression ou analogue par rapport à une surface de référence comme la paroi d'un moule ou analogue qui génère des forces de réaction.The present invention relates to devices for forming portions of tube or the like successively one after the other to make for example bellows, wavy, or any other shape given to portions of initially cylindrical tube under the action of forces, for example exerted by a fluid under pressure or the like with respect to a reference surface like the wall of a mold or the like which generates reaction forces.

Il existe des dispositifs de formage de portions de tube ou analogues successivement l'une après l'autre dans des applications industrielles comme celles qui ont été mentionnées ci-dessus.There are devices for forming tube portions or the like successively one after the other in industrial applications such as those that were mentioned above.

D'une façon très schématique, ces dispositifs comportent un socle comme un châssis ou analogue, deux mâchoires de formage pour définir un logement dans lequel est apte à être formée chaque portion de tube et des moyens pour commander le déplacement des deux mâchoires l'une par rapport à l'autre de façon à obtenir soit l'ouverture du logement soit sa fermeture.Very schematically, these devices include a base as a frame or the like, two forming jaws for defining a housing in which is adapted to be formed each portion of tube and means for control the movement of the two jaws relative to each other by so as to either open the housing or close it.

Il comporte aussi des moyens pour positionner successivement chaque portion de tube dans le logement quand il est ouvert, et des moyens pour commander le formage d'une portion de tube quand elle est placée dans le logement et que ce dernier est dans sa position fermée.It also includes means for successively positioning each portion of tube in the housing when it is open, and means for order the forming of a portion of tube when it is placed in the housing and that the latter is in its closed position.

Ces moyens pour positionner successivement chaque portion de tube dans le logement quand il est ouvert comportent essentiellement un manchon qui est apte à porter la portion de tube et des moyens pour déplacer le manchon successivement dans le logement entre les mâchoires et en dehors de celui-ci.These means for successively positioning each portion of tube in the housing when it is open essentially have a sleeve which is suitable for carrying the portion of tube and means for moving the sleeve successively in the housing between the jaws and outside of it.

Une portion de tube est enfichée sur le manchon lorsqu'il est situé en dehors du logement, puis le manchon portant la portion de tube est déplacé pour être positionné dans le logement. Le formage de la portion de tube est alors effectué, puis le manchon portant la portion de tube formée est retiré du logement. La portion de tube formée est retirée du manchon et remplacée par une nouvelle portion de tube à former, et ainsi de suite pour toutes les portions de tube à former. A portion of the tube is plugged into the sleeve when it is located in outside the housing, then the sleeve carrying the tube portion is moved to be positioned in the housing. The forming of the tube portion is then then the sleeve carrying the portion of tube formed is removed from the housing. The portion of tube formed is removed from the sleeve and replaced by a new portion of tube to be formed, and so on for all portions of tube to be formed.

Ces opérations successives prennent du temps, ce qui limite la productivité d'un tel dispositif de formage et augmente le coût de revient du formage des portions de tubes.These successive operations take time, which limits productivity of such a forming device and increases the cost of forming the portions of tubes.

La présente invention a donc pour but de réaliser un dispositif de formage de portions de tube ou analogues successivement l'une après l'autre, à un seul logement de formage, qui réduise le temps de production d'une pluralité de portions de tube formées par rapport au temps de production avec les dispositifs de l'art antérieur.The object of the present invention is therefore to produce a forming device of portions of tube or the like successively one after the other, to a single forming housing, which reduces the production time of a plurality of tube portions formed with respect to production time with the devices of the prior art.

Plus précisément, la présente invention a pour objet un dispositif de formage de portions de tube ou analogues successivement l'une après l'autre, comportant :

  • un socle,
  • deux mâchoires de formage pour définir un logement dans lequel est apte à être formée chaque portion de tube, ledit logement étant défini suivant un premier axe,
  • des moyens pour commander le déplacement des deux mâchoires l'une par rapport à l'autre et par rapport au socle de façon à obtenir soit l'ouverture du logement soit sa fermeture,
  • des moyens pour positionner chaque portion de tube dans ledit logement quand il est ouvert, et
  • des moyens pour commander le formage d'une portion de tube quand elle est placée dans ledit logement et que ce dernier est dans sa position fermée,
caractérisé par le fait que les moyens pour positionner chaque portion de tube dans ledit logement quand il est ouvert, comportent :
  • une embase,
  • des moyens pour déplacer ladite embase en rotation autour d'un deuxième axe par rapport audit socle, d'un angle déterminé β de façon que ladite embase puisse prendre au moins deux première et seconde positions déterminées, ce dit deuxième axe étant parallèle au premier axe et situé à une distance non nulle δ de ce premier axe,
  • une tête,
  • au moins deux manchons aptes chacun à porter une portion de tube,
  • des moyens pour solidariser ces deux manchons avec ladite tête de façon que les deux manchons soient respectivement situés sur deux troisième et quatrième axes concourant en un point de concours situé à une distance du deuxième axe égale à δ et en dehors dudit logement, ces deux troisième et quatrième axes faisant entre eux un angle non nul α, les deux manchons étant en outre positionnés de façon symétrique par rapport à la bissectrice de l'angle α,
  • des moyens pour monter ladite tête en rotation par rapport à l'embase autour d'un cinquième axe défini sur la bissectrice de l'angle α et de façon, d'une part que ce cinquième axe forme, avec la direction du deuxième axe, un angle égal à α / 2, lesdits deuxième, troisième, quatrième et cinquième axes étant coplanaires, et d'autre part que ladite tête soit entraínée dans la même rotation que celle de l'embase quand cette dernière passe de l'une de ses deux positions à l'autre, la première position étant en outre définie de façon que ledit point de concours soit situé sur le premier axe, et
  • des moyens pour commander pas à pas la rotation de la tête par rapport à l'embase, chaque pas ayant une valeur de 180°.
More specifically, the subject of the present invention is a device for forming portions of tube or the like successively one after the other, comprising:
  • a pedestal,
  • two forming jaws to define a housing in which each portion of the tube is capable of being formed, said housing being defined along a first axis,
  • means for controlling the movement of the two jaws relative to each other and relative to the base so as to obtain either the opening of the housing or its closing,
  • means for positioning each portion of tube in said housing when it is open, and
  • means for controlling the forming of a portion of tube when it is placed in said housing and when the latter is in its closed position,
characterized in that the means for positioning each portion of tube in said housing when it is open, comprise:
  • a base,
  • means for moving said base in rotation about a second axis relative to said base, by a determined angle β so that said base can take at least two first and second determined positions, said second axis being parallel to the first axis and located at a non-zero distance δ from this first axis,
  • a head,
  • at least two sleeves each capable of carrying a portion of tube,
  • means for securing these two sleeves with said head so that the two sleeves are respectively located on two third and fourth axes competing at a point of competition located at a distance from the second axis equal to δ and outside said housing, these two third and fourth axes forming between them a non-zero angle α, the two sleeves being also positioned symmetrically with respect to the bisector of the angle α,
  • means for mounting said head in rotation relative to the base about a fifth axis defined on the bisector of the angle α and so, on the one hand, that this fifth axis forms, with the direction of the second axis, an angle equal to α / 2, said second, third, fourth and fifth axes being coplanar, and secondly that said head is driven in the same rotation as that of the base when the latter passes from one of its two positions to the other, the first position being further defined so that said point of competition is located on the first axis, and
  • means for controlling step by step the rotation of the head relative to the base, each step having a value of 180 °.

D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif mais nullement limitatif, dans lesquels :Other characteristics and advantages of the invention will become apparent during of the following description given with reference to the drawings annexed by way of illustration but in no way limitative, in which:

Les figures 1 et 2 représentent, sous forme schématique, respectivement en vue de face et de côté, un mode de réalisation d'un dispositif de formage de portions de tube ou analogues selon l'invention.Figures 1 and 2 show, in schematic form, respectively in front and side view, an embodiment of a device for forming tube portions or the like according to the invention.

Il est bien précisé que, sur les figures, les mêmes références désignent les mêmes éléments, quelle que soit la figure sur laquelle elles apparaissent et quelle que soit la forme de représentation de ces éléments. De même, si des éléments ne sont pas spécifiquement référencés sur l'une des figures, leurs références peuvent être aisément retrouvées en se reportant à l'autre figure.It is clearly specified that, in the figures, the same references designate the same elements, whatever figure they appear on and whatever whatever the form of representation of these elements. Similarly, if elements are not specifically referenced in one of the figures, their references can be easily found by referring to the other figure.

La Demanderesse tient aussi à préciser que les figures représentent un seul mode de réalisation de l'objet selon l'invention, et qu'il peut exister d'autres modes de réalisation qui répondent à la définition de cette invention. The Applicant also wishes to specify that the figures represent a only embodiment of the object according to the invention, and that there may be other embodiments that meet the definition of this invention.

Elle précise en outre que, lorsque, selon la définition de l'invention, l'objet de l'invention comporte "au moins un" élément ayant une fonction donnée, le mode de réalisation décrit peut comporter plusieurs de ces éléments.It also specifies that, when, according to the definition of the invention, the object of the invention comprises "at least one" element having a given function, the described embodiment may include several of these elements.

Elle précise aussi que, si le mode de réalisation de l'objet selon l'invention tel qu'illustré comportent plusieurs éléments de fonction identique et que si, dans la description, il n'est pas spécifié que l'objet selon cette invention doit obligatoirement comporter un nombre particulier de ces éléments, l'objet de l'invention pourra être défini comme comportant "au moins un" de ces éléments.It also specifies that, if the embodiment of the object according to the invention as illustrated have several elements of identical function and that if in the description, it is not specified that the object according to this invention must must include a particular number of these elements, the object of the invention could be defined as comprising "at least one" of these elements.

Ceci ayant été précisé, les figures 1 et 2 représentent un mode de réalisation avantageux d'un dispositif de formage de portions de tube T1, T2, ..., Tn, Tn+1, ... ou analogues successivement l'une après l'autre.This having been specified, FIGS. 1 and 2 represent an advantageous embodiment of a device for forming tube portions T 1 , T 2 , ..., T n , T n + 1 , ... or the like successively. one after the other.

Le dispositif comporte un socle 1 comme un châssis ou analogue, deux mâchoires de formage 2, 3 pour définir un logement 4 dans lequel est apte à être formée chaque portion de tube T1, T2, ..., Tn, ce logement étant défini suivant un premier axe 6, et des moyens représentés schématiquement 5 pour commander le déplacement des deux mâchoires 2, 3 l'une par rapport à l'autre et par rapport au socle 1 de façon à obtenir soit l'ouverture du logement 4 soit sa fermeture. L'ouverture et la fermeture du logement peuvent s'obtenir par rotation et/ou translation des deux mâchoires.The device comprises a base 1 such as a chassis or the like, two forming jaws 2, 3 to define a housing 4 in which each portion of tube T 1 , T 2 , ..., T n is capable of being formed, this housing being defined along a first axis 6, and means shown diagrammatically 5 for controlling the movement of the two jaws 2, 3 relative to each other and relative to the base 1 so as to obtain either the opening of the housing 4 or its closure. The opening and closing of the housing can be obtained by rotation and / or translation of the two jaws.

Sur la figure 2, la position des mâchoires lorsque le logement est ouvert est représentée en traits fins interrompus et désignée par la référence Mo tandis que leur position lorsque le logement est fermé est représentée en traits épais interrompus et désignée par la référence Mf. Sur la figure 1, les mâchoires 2 et 3 sont représentées schématiquement en position fermée Mf.In FIG. 2, the position of the jaws when the housing is open is represented in fine broken lines and designated by the reference M o while their position when the housing is closed is represented in thick broken lines and designated by the reference M f . In FIG. 1, the jaws 2 and 3 are shown diagrammatically in the closed position M f .

De telles mâchoires 2, 3 et les moyens 5 pour les déplacer sont connus en eux-mêmes et ne seront donc pas plus amplement décrits ici dans le seul souci de ne pas alourdir la présente description.Such jaws 2, 3 and the means 5 for moving them are known in themselves and will therefore not be described more fully here for the sole purpose not to burden this description.

Le dispositif comporte aussi des moyens 20 pour positionner successivement chaque portion de tube Tn dans le logement 4 quand il est ouvert, et des moyens 10 pour commander le formage de chaque portion de tube quand elle est placée dans le logement et que ce dernier est dans sa position fermée.The device also comprises means 20 for successively positioning each portion of tube T n in the housing 4 when it is open, and means 10 for controlling the forming of each portion of tube when it is placed in the housing and when the latter is in its closed position.

Ces derniers moyens 10, par exemple des moyens d'hydroformage ou analogues, sont eux aussi connus en eux-mêmes et ne seront donc pas décrits ici puisqu'ils font partie de l'art antérieur. These latter means 10, for example hydroforming means or analogues, are also known in themselves and will therefore not be described here since they are part of the prior art.

Selon l'invention, les moyens 20 pour positionner chaque portion de tube dans le logement 4 quand il est ouvert comportent une embase 21, des moyens 22 pour déplacer cette embase 21 en rotation autour d'un deuxième axe 23 par rapport au socle 1, d'un angle déterminé β de façon que l'embase puisse prendre au moins deux première et seconde positions déterminées P1, P2 respectivement représentées en traits continus et en traits interrompus sur la figure 2. Ce deuxième axe 23 est en outre défini de façon qu'il soit parallèle au premier axe 6 et situé à une distance non nulle δ de ce premier axe 6.According to the invention, the means 20 for positioning each portion of tube in the housing 4 when it is open comprise a base 21, means 22 for moving this base 21 in rotation around a second axis 23 relative to the base 1, by a determined angle β so that the base can take at least two first and second determined positions P 1 , P 2 respectively represented in solid lines and in broken lines in FIG. 2. This second axis 23 is further defined by so that it is parallel to the first axis 6 and located at a non-zero distance δ from this first axis 6.

Ils comportent aussi une tête 24, au moins deux manchons 25, 26, comme illustré sur les deux figures, aptes chacun à porter une portion de tube Tn, des moyens 27, 28, comme des pattes ou analogues, pour solidariser ces deux manchons avec la tête 24 de façon que les deux manchons 25, 26 soient respectivement situés sur deux troisième 29 et quatrième 30 axes concourant en un point de concours 31 qui reste constamment situé à une distance du deuxième axe 23 égale à δ et en dehors du logement 4 quelle que soit la position de l'embase comme décrit ci-après.They also include a head 24, at least two sleeves 25, 26, as illustrated in the two figures, each capable of carrying a portion of tube T n , means 27, 28, like lugs or the like, for securing these two sleeves with the head 24 so that the two sleeves 25, 26 are respectively located on two third 29 and fourth 30 axes competing at a point of competition 31 which remains constantly located at a distance from the second axis 23 equal to δ and outside the housing 4 whatever the position of the base as described below.

Dans le mode de réalisation illustré, le dispositif comporte deux manchons, mais il pourrait être concevable qu'il en comporte plus de deux, régulièrement angulairement répartis autour de la tête 24. Cependant, si cette réalisation est théoriquement possible, elle ne présente pas assez d'avantages dans la pratique.In the illustrated embodiment, the device comprises two sleeves, but it could be conceivable that it has more than two, regularly angularly distributed around the head 24. However, if this realization is theoretically possible, it does not have enough advantages in practice.

Ces deux troisième 29 et quatrième 30 axes sont définis de façon qu'ils fassent entre eux un angle non nul α et, de plus, les deux manchons 25, 26 sont positionnés par rapport à la tête 24 de façon qu'ils soient symétriques par rapport à la bissectrice de l'angle α défini ci-dessus.These two third 29 and fourth 30 axes are defined so that they make between them a non-zero angle α and, in addition, the two sleeves 25, 26 are positioned with respect to the head 24 so that they are symmetrical with respect to at the bisector of the angle α defined above.

Ces moyens 20 comportent en outre des moyens 32 pour monter la tête 24 en rotation par rapport à l'embase 21 autour d'un cinquième axe 33 défini sur la bissectrice de l'angle α et de façon, d'une part que ce cinquième axe 33 forme, avec la direction du deuxième axe 23, un angle égal à α / 2, les deuxième, troisième, quatrième et cinquième axes 23, 29, 30, 33 étant coplanaires, et d'autre part que la tête 24 soit entraínée dans la même rotation que celle de l'embase 4 quand cette dernière passe de l'une de ses deux positions P1, P2 à l'autre. Il est en outre précisé que la première position P1 de l'embase est définie de façon que le point de concours 31 soit situé sur le premier axe 6.These means 20 further comprise means 32 for mounting the head 24 in rotation relative to the base 21 around a fifth axis 33 defined on the bisector of the angle α and so, firstly that this fifth axis 33 forms, with the direction of the second axis 23, an angle equal to α / 2, the second, third, fourth and fifth axes 23, 29, 30, 33 being coplanar, and on the other hand that the head 24 is driven in the same rotation as that of the base 4 when the latter passes from one of its two positions P 1 , P 2 to the other. It is further specified that the first position P 1 of the base is defined so that the point of competition 31 is located on the first axis 6.

Dans une réalisation avantageuse, les moyens 32 pour monter la tête 24 en rotation par rapport à l'embase 21 sont constitués, comme plus particulièrement illustré sur la figure 1, par un moteur 40 comportant un stator 41 et un rotor 42, le stator étant solidaire de l'embase 21 et la tête 24 solidaire du rotor 42, le stator 41 étant solidarisé avec l'embase 21 de façon que l'axe du rotor 42 soit confondu avec la bissectrice de l'angle α.In an advantageous embodiment, the means 32 for mounting the head 24 in rotation relative to the base 21 are formed, as more particularly illustrated in FIG. 1, by a motor 40 comprising a stator 41 and a rotor 42, the stator being secured to the base 21 and the head 24 secured to the rotor 42, the stator 41 being secured to the base 21 so that the axis of the rotor 42 is confused with the bisector of the angle α.

Enfin, ces moyens 20 comportent aussi des moyens 34 pour commander pas à pas la rotation de la tête 24 par rapport à l'embase 21, chaque pas ayant une valeur de 180° quand le nombre de manchons est égal à deux comme dans le mode de réalisation illustré sur les figures 1 et 2, qui est en fait le mode de réalisation préférentiel qui donne les meilleurs résultats en tenant compte de l'encombrement du dispositif, du coût de revient de sa fabrication et de la vitesse de production des portions de tube Tn avec ce dispositif.Finally, these means 20 also include means 34 for controlling step by step the rotation of the head 24 relative to the base 21, each step having a value of 180 ° when the number of sleeves is equal to two as in the mode illustrated in Figures 1 and 2, which is in fact the preferred embodiment which gives the best results taking into account the size of the device, the cost of its manufacture and the speed of production of the portions of tube T n with this device.

Ces moyens 34 sont avantageusement constitués par des moyens électriques connus en eux-mêmes pour commander le moteur 40 défini ci-dessus. Ces moyens électriques sont aptes à délivrer des ordres successifs, chaque ordre appliqué à l'entrée du moteur commandant la rotation du rotor d'un angle de 180°.These means 34 are advantageously constituted by means electric known in themselves for controlling the motor 40 defined above. These electrical means are capable of issuing successive orders, each order applied to the motor input controlling the rotation of the rotor by an angle of 180 °.

Il est aussi avantageux que le dispositif comporte des moyens pour enficher une portion de tube Tn sur l'un des deux manchons 25, 26 lorsqu'il se trouve en dehors du logement 4 quand l'autre est situé dans le logement et des moyens pour saisir et enlever une portion de tube formée Tn enfichée sur un manchon 25, 26 lorsque ce dernier est sorti du logement 4 par passage de l'embase 21 de sa première position P1 à sa seconde position P2.It is also advantageous for the device to include means for plugging a portion of tube T n onto one of the two sleeves 25, 26 when it is outside the housing 4 when the other is located in the housing and means to grasp and remove a portion of tube formed T n fitted on a sleeve 25, 26 when the latter has left the housing 4 by passing the base 21 from its first position P 1 to its second position P 2 .

Ces derniers moyens sont connus en eux-mêmes. Ils n'ont donc pas été illustrés et ne seront pas plus amplement décrits ici, dans l'unique souci de simplifier la présente description.These latter means are known in themselves. They were therefore not illustrated and will not be described more fully here, for the sole purpose of simplify this description.

Dans une réalisation préférée, l'angle α est égal à 90 degrés, comme illustré sur les figures 1 et 2.In a preferred embodiment, the angle α is equal to 90 degrees, as illustrated in Figures 1 and 2.

La valeur de l'angle β mentionné ci-dessus est, quant à elle, déterminée de façon que, dans la seconde position P2 de l'embase 21, l'un des deux manchons 25, 26 associés à la tête 24, quand il se situe sur un axe parallèle au deuxième axe 23, puisse être en dehors de l'espace défini entre les deux mâchoires 2, 3 lorsque le logement 4 est ouvert, Mo.The value of the angle β mentioned above is, in turn, determined so that, in the second position P 2 of the base 21, one of the two sleeves 25, 26 associated with the head 24, when it is located on an axis parallel to the second axis 23, can be outside the space defined between the two jaws 2, 3 when the housing 4 is open, M o .

En outre, lorsque la valeur de l'angle α est égale à 90° comme mentionné auparavant, il est très avantageux que, dans le cas de l'utilisation du dispositif dans un milieu où règne une force de gravitation, les premier et deuxième axes 6, 23 soient horizontaux et situés dans un plan vertical, le premier axe 6 étant en outre situé au-dessus du deuxième axe 23.In addition, when the value of the angle α is equal to 90 ° as mentioned beforehand, it is very advantageous that, in the case of using the device in an environment where a gravitational force reigns, the first and second axes 6, 23 are horizontal and located in a vertical plane, the first axis 6 being in additionally located above the second axis 23.

Avantageusement, dans ce cas, lorsque l'embase 21 est dans sa première position P1, l'axe du manchon sur lequel est enfichée une portion de tube Tn à former est vertical et ce manchon est situé au-dessus du plan horizontal contenant le premier axe 6.Advantageously, in this case, when the base 21 is in its first position P 1 , the axis of the sleeve on which a portion of tube T n to be formed is inserted is vertical and this sleeve is located above the horizontal plane containing the first axis 6.

Ainsi, lorsque l'un des manchons est dans le logement 4, l'autre est dans une position verticale, ce qui facilite l'enfilage d'une portion de tube Tn sur ce dernier en utilisant la gravitation.Thus, when one of the sleeves is in the housing 4, the other is in a vertical position, which facilitates the threading of a portion of tube T n on the latter using gravitation.

De préférence, le dispositif comporte aussi des moyens 50 pour maintenir une portion de tube Tn sur un manchon 25, 26 après qu'elle ait été enfichée sur celui-ci. Ces moyens 50, illustrés schématiquement sur les figures, peuvent par exemple être constitués par des cliquets à ressort ou analogues qui exercent sur ces portions de tube des forces suffisantes pour les maintenir sur les manchons quand ces derniers sont en mouvement, tout en permettant de retirer les portions de tube sous l'action simplement d'une force de traction légèrement supérieure à celles exercées par ces cliquets.Preferably, the device also comprises means 50 for holding a portion of tube T n on a sleeve 25, 26 after it has been inserted thereon. These means 50, illustrated schematically in the figures, may for example be constituted by spring pawls or the like which exert on these tube portions sufficient forces to keep them on the sleeves when the latter are in motion, while allowing to remove the tube portions under the action simply of a tensile force slightly greater than those exerted by these pawls.

Le dispositif décrit ci-dessus fonctionne et s'utilise de la façon suivante : The device described above works and is used as follows :

II est supposé que, dans une position initiale comme illustré sur les figures 1 et 2, le manchon 25 est situé dans le logement 4 et porte une portion de tube Tn à former. Dans ces conditions, l'embase 21 est dans sa position P1 et l'axe 30 du manchon 26 est vertical.It is assumed that, in an initial position as illustrated in Figures 1 and 2, the sleeve 25 is located in the housing 4 and carries a portion of tube T n to be formed. Under these conditions, the base 21 is in its position P 1 and the axis 30 of the sleeve 26 is vertical.

Pendant que la portion de tube Tn est formée dans le logement 4 entre les mâchoires 2, 3, via les moyens 10 comme par exemple des moyens d'hydroformage, une nouvelle portion de tube Tn+1 non formée est enfichée sur le manchon 26 au moyen par exemple de pinces de robot ou analogues.While the portion of tube T n is formed in the housing 4 between the jaws 2, 3, via the means 10 such as, for example, hydroforming means, a new portion of tube T n + 1 which is not formed is inserted on the sleeve. 26 by means, for example, of robot tongs or the like.

Quand le formage de la portion de tube Tn est terminé, par les moyens de commande 5, les mâchoires 2, 3 passent de leur position de fermeture du logement Mf à leur position d'ouverture Mo. When the forming of the tube portion T n is finished, by the control means 5, the jaws 2, 3 pass from their closed position of the housing M f to their open position M o .

A cet instant, l'embase 21 est commandée en rotation autour de l'axe 23 et passe de sa position P1 à sa position P2, figure 2. Dans ce mouvement, le manchon 25 portant la portion de tube Tn formée sort du logement 4. Quand l'embase est arrivée dans sa seconde position P2, la portion de tube Tn formée est enlevée du manchon 25 au moyen de pinces de robot ou analogues.At this instant, the base 21 is controlled to rotate about the axis 23 and passes from its position P 1 to its position P 2 , FIG. 2. In this movement, the sleeve 25 carrying the portion of tube T n formed comes out of the housing 4. When the base has reached its second position P 2 , the portion of tube T n formed is removed from the sleeve 25 by means of robot tongs or the like.

Ensuite, l'embase étant toujours dans sa seconde position P2, la tête 24 est animée d'un mouvement de rotation autour de l'axe 33, d'un angle de 180°. Dans ce mouvement, le manchon 26 portant la portion de tube Tn+1 à former prend la place du manchon 25 libéré de la portion de tube Tn formée et ce manchon 25 prend la place du manchon 26.Then, the base being always in its second position P 2 , the head 24 is rotated around the axis 33, by an angle of 180 °. In this movement, the sleeve 26 carrying the tube portion T n + 1 to be formed takes the place of the sleeve 25 released from the tube portion T n formed and this sleeve 25 takes the place of the sleeve 26.

Dès que l'inversion des deux manchons est effectuée, l'embase 21 repasse de sa seconde position P2 à sa première position P1. Dans ce mouvement, le manchon 26 portant la nouvelle portion de tube Tn+1 à former se positionne entre les mâchoires 2, 3, et le manchon 25 se positionne verticalement. Puis, simultanément, d'une part les mâchoires 2, 3 passent de leur position d'ouverture du logement Mo à leur position de fermeture Mf, le formage de la portion de tube Tn+1 par les moyens de formage 10 est commandé, et d'autre part une nouvelle portion de tube Tn+2 est amenée et enfichée sur le manchon 25.As soon as the two sleeves are inverted, the base 21 returns from its second position P 2 to its first position P 1 . In this movement, the sleeve 26 carrying the new portion of tube T n + 1 to be formed is positioned between the jaws 2, 3, and the sleeve 25 is positioned vertically. Then, simultaneously, on the one hand, the jaws 2, 3 pass from their opening position of the housing M o to their closing position M f , the forming of the tube portion T n + 1 by the forming means 10 is controlled, and on the other hand a new portion of tube T n + 2 is brought and inserted on the sleeve 25.

Les opérations décrites ci-dessus peuvent ainsi se reproduire successivement et simultanément autant de fois qu'il est nécessaire de réaliser le formage de portions de tube.The operations described above can thus be repeated successively and simultaneously as many times as it is necessary to carry out the forming tube portions.

A la description du fonctionnement du dispositif faite ci-dessus, on constate que le temps de production de tubes formés est nettement diminué, sensiblement de moitié, par rapport au temps de production avec les dispositifs de l'art antérieur rappelés dans le préambule, atteignant ainsi les buts visés par la présente invention.In the description of the operation of the device made above, it can be seen that the production time of formed tubes is significantly reduced, significantly in half, compared to the production time with the devices of the prior art recalled in the preamble, thus achieving the aims of this invention.

Claims (9)

Dispositif de formage de portions de tube (T1, T2, ..., Tn, Tn+1) ou analogues successivement l'une après l'autre, comportant : un socle (1), deux mâchoires de formage (2, 3) pour définir un logement (4) dans lequel est apte à être formée chaque portion de tube (T1, T2, ...), ledit logement étant défini suivant un premier axe (6), des moyens (5) pour commander le déplacement des deux mâchoires (2, 3) l'une par rapport à l'autre et par rapport au socle (1) de façon à obtenir soit l'ouverture du logement (4) soit sa fermeture, des moyens (20) pour positionner chaque portion de tube dans ledit logement (4) quand il est ouvert, et des moyens (10) pour commander le formage d'une portion de tube (Tn) quand elle est placée dans ledit logement et que ce dernier est dans sa position fermée, caractérisé par le fait que les moyens (20) pour positionner chaque portion de tube dans ledit logement (4) quand il est ouvert, comportent une embase (21), des moyens (22) pour déplacer ladite embase (21) en rotation autour d'une deuxième axe (23) par rapport audit socle (1), d'un angle déterminé β de façon que ladite embase puisse prendre au moins deux première et seconde positions déterminées (P1, P2), ce dit deuxième axe (23) étant parallèle au premier axe (6) et situé à une distance non nulle δ de ce premier axe, une tête (24), au moins deux manchons (25, 26) aptes chacun à porter une portion de tube (Tn), des moyens (27, 28) pour solidariser ces deux manchons avec ladite tête (24) de façon que les deux manchons (25, 26) soient respectivement situés sur deux troisième (29) et quatrième (30) axes concourant en un point de concours (31) situé à une distance du deuxième axe (23) égale à δ et en dehors dudit logement (4), ces deux troisième (29) et quatrième (30) axes faisant entre eux un angle non nul α, les deux manchons (25, 26) étant en outre positionnés de façon symétrique par rapport à la bissectrice de l'angle α, des moyens (32) pour monter ladite tête (24) en rotation par rapport à l'embase (21) autour d'un cinquième axe (33) défini sur la bissectrice de l'angle α et de façon, d'une part que ce cinquième axe (33) forme, avec la direction du deuxième axe (23), un angle égal à α / 2, lesdits deuxième, troisième, quatrième et cinquième axes (23, 29, 30, 33) étant coplanaires, et d'autre part que ladite tête soit entraínée dans la même rotation que celle de l'embase (4) quand cette dernière passe de l'une de ses deux positions (P1, P2) à l'autre, la première position (P1) étant en outre définie de façon que ledit point de concours (31) soit situé sur le premier axe (6), et des moyens (34) pour commander pas à pas la rotation de la tête (24) par rapport à l'embase (21), chaque pas ayant une valeur de 180°. Device for forming tube portions (T 1 , T 2 , ..., T n , T n + 1 ) or the like successively one after the other, comprising: a base (1), two forming jaws (2, 3) to define a housing (4) in which each portion of tube (T 1 , T 2 , ...) is capable of being formed, said housing being defined along a first axis (6) , means (5) for controlling the movement of the two jaws (2, 3) relative to each other and relative to the base (1) so as to either open the housing (4) or close it , means (20) for positioning each portion of tube in said housing (4) when it is open, and means (10) for controlling the forming of a portion of tube (T n ) when it is placed in said housing and when the latter is in its closed position, characterized in that the means (20) for positioning each portion of tube in said housing (4) when it is open, comprise a base (21), means (22) for moving said base (21) in rotation about a second axis (23) relative to said base (1), by a determined angle β so that said base can take at least two first and second determined positions (P 1 , P 2 ), said second axis (23) being parallel to the first axis (6) and located at a non-zero distance δ from this first axis, a head (24), at least two sleeves (25, 26) each capable of carrying a portion of tube (T n ), means (27, 28) for securing these two sleeves with said head (24) so that the two sleeves (25, 26) are respectively located on two third (29) and fourth (30) axes competing at a point of competition (31) located at a distance from the second axis (23) equal to δ and outside said housing (4), these two third (29) and fourth (30) axes forming between them a non-zero angle α, the two sleeves ( 25, 26) being also positioned symmetrically with respect to the bisector of the angle α, means (32) for mounting said head (24) in rotation relative to the base (21) about a fifth axis (33) defined on the bisector of the angle α and so, on the one hand that this fifth axis (33) forms, with the direction of the second axis (23), an angle equal to α / 2, said second, third, fourth and fifth axes (23, 29, 30, 33) being coplanar, and other hand that said head is driven in the same rotation as that of the base (4) when the latter passes from one of its two positions (P 1 , P 2 ) to the other, the first position (P 1 ) being further defined so that said point of competition (31) is located on the first axis (6), and means (34) for controlling step by step the rotation of the head (24) relative to the base (21), each step having a value of 180 °. Dispositif selon la revendication 1, caractérisé par le fait que la valeur de l'angle β est déterminé de façon que, dans la seconde position (P2) de l'embase, l'un des deux manchons (25, 26) qui sont associés avec ladite tête (24), quand il se situe sur un axe parallèle au deuxième axe (23), puisse être en dehors de l'espace défini entre les deux mâchoires (2, 3) lorsque ledit logement (4) est ouvert.Device according to claim 1, characterized in that the value of the angle β is determined so that, in the second position (P 2 ) of the base, one of the two sleeves (25, 26) which are associated with said head (24), when it is located on an axis parallel to the second axis (23), can be outside the space defined between the two jaws (2, 3) when said housing (4) is open. Dispositif selon l'une des revendications 1 et 2, caractérisé par le fait que l'angle α est égal à 90 degrés.Device according to either of Claims 1 and 2, characterized in that the angle α is equal to 90 degrees. Dispositif selon la revendication 3, dans le cas de son utilisation dans un milieu où règne une force de gravitation, caractérisé par le fait que les premier (6) et deuxième (23) axes sont horizontaux et situés dans un plan vertical, le premier axe (6) étant situé au-dessus du deuxième axe (23).Device according to claim 3, in the case of its use in an environment where a gravitational force prevails, characterized in that the first (6) and second (23) axes are horizontal and located in a vertical plane, the first axis (6) being located above the second axis (23). Dispositif selon la revendication 4, caractérisé par le fait qu'il comporte des moyens pour enficher une portion de tube (Tn) sur le manchon (25, 26) qui se trouve en dehors du logement (4) quand l'autre est situé dans ledit logement. Device according to claim 4, characterized in that it comprises means for plugging a portion of tube (T n ) onto the sleeve (25, 26) which is outside the housing (4) when the other is located in said accommodation. Dispositif selon la revendication 5, caractérisé par le fait que, lors de l'enfichage d'une portion de tube sur un manchon, l'axe de ce manchon est vertical et ce manchon est situé au-dessus du plan horizontal contenant le premier axe (6).Device according to claim 5, characterized in that , during the insertion of a portion of tube onto a sleeve, the axis of this sleeve is vertical and this sleeve is located above the horizontal plane containing the first axis (6). Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait qu'il comporte des moyens pour saisir et enlever une portion de tube formée (Tn) enfichée sur un manchon (25, 26) lorsque ce dernier est sorti du logement (4) par passage de l'embase (21) de sa première position (P1) à sa seconde position (P2).Device according to one of claims 1 to 6, characterized in that it comprises means for gripping and removing a portion of formed tube (T n ) inserted on a sleeve (25, 26) when the latter is removed from the housing (4) by passing the base (21) from its first position (P 1 ) to its second position (P 2 ). Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait qu'il comporte des moyens (50) pour maintenir une portion de tube (Tn) sur un manchon (25, 26) après qu'elle ait été enfichée sur celui-ci.Device according to one of claims 1 to 7, characterized in that it comprises means (50) for holding a portion of tube (T n ) on a sleeve (25, 26) after it has been inserted on this one. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que les moyens (32) pour monter la tête (24) en rotation par rapport à l'embase (21) sont constitués par un moteur (40) comportant un stator (41) et un rotor (42), le stator étant solidaire de ladite embase (21) et la tête (24) solidaire du rotor (42), ledit stator (41) étant solidarisé à l'embase (21) de façon que l'axe du rotor (42) soit confondu avec la bissectrice de l'angle α.Device according to one of claims 1 to 8, characterized in that the means (32) for mounting the head (24) in rotation relative to the base (21) consist of a motor (40) comprising a stator (41) and a rotor (42), the stator being integral with said base (21) and the head (24) integral with the rotor (42), said stator (41) being integral with the base (21) so that the axis of the rotor (42) is coincident with the bisector of the angle α.
EP02292802A 2001-11-21 2002-11-12 Apparatus for successively forming portions of tubes Expired - Lifetime EP1314493B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0115034A FR2832333B1 (en) 2001-11-21 2001-11-21 DEVICE FOR FORMING PORTIONS OF TUBE OR THE LIKE SUCCESSIVE ONE AFTER THE OTHER
FR0115034 2001-11-21

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EP1314493A1 true EP1314493A1 (en) 2003-05-28
EP1314493B1 EP1314493B1 (en) 2007-08-01

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EP (1) EP1314493B1 (en)
AT (1) ATE368539T1 (en)
DE (1) DE60221483T2 (en)
ES (1) ES2291428T3 (en)
FR (1) FR2832333B1 (en)
PT (1) PT1314493E (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019410A (en) * 1974-03-08 1977-04-26 Rudolf Staszkiewicz Rotary support for use in a machine tool
US4608747A (en) * 1982-05-06 1986-09-02 Index-Werke Komm.-Ges. Hahn & Tessky Multispindle-automatic turret lathe
US4739642A (en) * 1986-11-28 1988-04-26 Tube Fab Of Afton Corp. Tube forming apparatus
DE8912645U1 (en) * 1989-10-25 1991-02-21 Semmlinger, Werner, 8904 Friedberg Pipe bending machine for long, thin pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019410A (en) * 1974-03-08 1977-04-26 Rudolf Staszkiewicz Rotary support for use in a machine tool
US4608747A (en) * 1982-05-06 1986-09-02 Index-Werke Komm.-Ges. Hahn & Tessky Multispindle-automatic turret lathe
US4739642A (en) * 1986-11-28 1988-04-26 Tube Fab Of Afton Corp. Tube forming apparatus
DE8912645U1 (en) * 1989-10-25 1991-02-21 Semmlinger, Werner, 8904 Friedberg Pipe bending machine for long, thin pipes

Also Published As

Publication number Publication date
DE60221483D1 (en) 2007-09-13
FR2832333A1 (en) 2003-05-23
FR2832333B1 (en) 2004-01-16
EP1314493B1 (en) 2007-08-01
DE60221483T2 (en) 2008-04-17
ATE368539T1 (en) 2007-08-15
PT1314493E (en) 2007-10-02
ES2291428T3 (en) 2008-03-01

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