EP3216535B1 - Apparatus and method for benid a longitudinal cylindrical canalization - Google Patents

Apparatus and method for benid a longitudinal cylindrical canalization Download PDF

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Publication number
EP3216535B1
EP3216535B1 EP17159521.8A EP17159521A EP3216535B1 EP 3216535 B1 EP3216535 B1 EP 3216535B1 EP 17159521 A EP17159521 A EP 17159521A EP 3216535 B1 EP3216535 B1 EP 3216535B1
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EP
European Patent Office
Prior art keywords
heating
module
pipe
bending machine
bending
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EP17159521.8A
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German (de)
French (fr)
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EP3216535A1 (en
Inventor
Damien SIREUDE
Daniel Perherin
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Airbus Atlantic SAS
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Stelia Aerospace SAS
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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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
    • B21D7/162—Heating equipment

Definitions

  • the present invention relates to the field of bending a longitudinal cylindrical pipe, in particular, for an aeronautical application.
  • a pipe makes it possible to conduct any type of fluid, in particular air, water or fuel.
  • a bent pipe is obtained by bending a straight pipe by means of a bending machine.
  • a bending machine commonly comprises a mechanical deformation module which makes it possible to mechanically deform a portion of the pipe.
  • the deformation module comprises a displacement member and a stop member, the displacement member being configured to grip a longitudinal portion of the pipe in order to force it against the stop member.
  • the deformation modulus is advantageously configurable to adjust, for example, the length of the bent portion or the bending angle.
  • a heating module comprising two jaws, of complementary shapes, which are suitable for, on the one hand, clamping together a longitudinal portion of the pipe and, on the other hand, heating it by thermal conduction. .
  • Each jaw is heated so that the heat from the jaw is transmitted by thermal conduction to the longitudinal portion of the pipe which is clamped.
  • Such a heating module only makes it possible to heat a single length of the longitudinal portion of the pipe, that is to say, that equal to the length of each jaw.
  • longitudinal portions of the pipe which must not be deformed shapes can be heated, which constitutes a loss of energy and can also weaken the pipe.
  • jaws allow only pipes of the same diameter to be heated, which makes it necessary to change the jaw for pipes of different diameters.
  • the use of jaws leads to logistical drawbacks and slows down the bending operations (slow heating, long change, etc.).
  • a bending machine as defined in the preamble of claim 1 is known from document DE 23 29 113 A1 .
  • the object of the invention is therefore to remedy these drawbacks by proposing a new bending machine and a new bending process.
  • the invention relates to a machine for bending at least one longitudinal cylindrical pipe, the bending machine comprising at least one heating module configured to heat a longitudinal cylindrical pipe and at least one deformation module configured to deform a longitudinal portion of a longitudinal cylindrical pipe in order to bend it.
  • heating module comprises a plurality of heating members, each heating member comprising a peripheral heating body defining an interior opening adapted to allow the passage of a longitudinal portion of a longitudinal cylindrical pipe. to heat.
  • Such a heating module makes it possible to heat a pipe in a peripheral manner and in a homogeneous manner, which makes it possible to limit the risk of damage during bending.
  • a heating module allows contactless heating, which prevents any mechanical damage to the pipe during heating.
  • a heating module makes it possible to heat pipes of different diameters.
  • the use of a plurality of heating elements in the same heating module makes it possible to adjust the heating length and to avoid heating a part of the pipe which must not be bent. The risk of damage is thus limited.
  • the interior openings of the heaters are aligned along an axis.
  • the heating members can heat consecutive elementary portions of the longitudinal pipe when the latter extends along said axis.
  • two consecutive heating members are spaced apart by an axial distance of between 5mm and 50mm, preferably between 15mm and 30mm.
  • Such a spacing makes it possible to ensure a compromise between continuous heating between two consecutive elementary portions of the pipe and a limitation of the risk of excessive heating of an elementary portion of the pipe due to the accumulation of heaters generated by said control members. heater.
  • the heating peripheral body extends in a plane in order to limit its bulk while allowing heating of a portion of pipe of reduced length.
  • the peripheral heating body has a thickness of between 5 mm and 20 mm. More preferably, the peripheral heating body extends in a plane orthogonal to the axis along which the internal openings of the heating members are aligned so as to provide heating orthogonal to the pipe.
  • the peripheral heating body is substantially annular in order to heat the periphery of the pipe in a homogeneous manner.
  • the peripheral heating body has an omega shape, which makes it possible to position its power connector radially outwards.
  • the size of the heating members in the heating module is thus limited.
  • each peripheral heating body has an internal diameter of between 80 mm and 90 mm.
  • each heater is configured to concentrate the heat in its interior opening.
  • the peripheral heating body comprises a coating configured to orient said heating, preferably in gold.
  • each heating member emits infrared radiation. Such radiation makes it possible to heat a longitudinal portion rapidly with high efficiency.
  • the heating module comprises a peripheral support envelope in which the heating members are mounted.
  • the efficiency of the heaters is enhanced because the envelope allows the heating to be reflected.
  • the interior surface of the casing is covered with aluminum, preferably glossy polished aluminum.
  • each heating member comprises a plurality of peripheral heating bodies, preferably juxtaposed.
  • the bending machine comprises a control module configured to activate a selection of said heating members of the heating module.
  • the length of the longitudinal portion to be heated can be configured in order to avoid the heating of a part which must not be bent.
  • control module is configured to parameterize the heating module according to the parameterization of the deformation module.
  • the heating is made to measure according to the desired bending.
  • the longitudinal portion to be deformed is heated, which limits the risk of damage.
  • a longitudinal portion of the pipe is heated without contact by the heating module.
  • the heating length can be adapted.
  • the method comprises a step of determining a target longitudinal portion of the longitudinal cylindrical pipe to be bent, a step of heating the target longitudinal portion by selective activation of the heating members and a step of deformation by the modulus of deformation of said target portion.
  • Such a process allows custom heating as a function of the desired bending.
  • the risk of damage is limited as well as the risk of excessive heating.
  • a bending machine 100 of at least one longitudinal cylindrical pipe CC can conduct any type of fluid, in particular air, water or fuel.
  • a method of bending a CC pipe made of thermoplastic material will be presented below, but it goes without saying that the invention also applies to a pipe made of metallic material.
  • the bending machine 100 has several modules to allow automated bending of a CC pipe.
  • the bending machine 100 makes it possible to produce, consecutively, several longitudinal portions bent on the same pipe CC.
  • the bending machine 100 comprises a heating module 1, a deformation module 2, a control module 3 and a transport module 4 intended to move the CC pipe from the heating module 1 to the deformation module 2.
  • the deformation modulus 2 makes it possible to bend a longitudinal portion of the CC pipe according to the wishes of the operator.
  • the deformation modulus 2 can be configured so as to produce bent portions of different length and shape (bending angle, bending direction, etc.).
  • the deformation module 2 comprises a displacement member 20, a stop member 21 and a pressure member 22, the displacement member 20 being configured to force a portion of the pipe CC against the stop member 21, called also "anvil", to bend it.
  • a deformation modulus 2 is known to those skilled in the art and will not be presented in more detail.
  • the bending machine 100 comprises a heating module 1 for heating the CC pipe before it is bent by the deformation module 2.
  • a preliminary heating makes it possible to facilitate mechanical deformation of the CC pipe.
  • the CC pipe is adapted to move from upstream to downstream along an X axis in the bending machine 100.
  • the heating module 1 is located upstream of the deformation module 2.
  • the heating module 1 is located near the deformation module 2 so as to prevent cooling of the CC pipe during its movement along the X axis between the heating module 1 and the deformation module 2.
  • the axial distance between the heating module 1 and the deformation module 2 is less than 20 mm.
  • the heating module 1 is separate from the deformation module 2 in order to offer greater freedom of movement to the deformation module 2 during the bending steps.
  • the heating module 1 comprises a plurality of heating elements 10.
  • the heating module 1 comprises 6 heating elements 10 mounted in a peripheral support envelope 14 which will be presented by the after.
  • each heating member 10 comprises a single peripheral heating body 11 defining an interior opening 12 adapted to allow the passage of a longitudinal portion of a CC pipe to be heated.
  • a heater 10 could comprise several peripheral heating bodies, in particular, juxtaposed.
  • each heater 10 emits infrared radiation so as to heat the DC pipe without contact.
  • each heating member 10 emits infrared radiation of the short wave type, for example 0.76 to 2 ⁇ m, for a power of the order of 900 W, which enables rapid heating to be carried out.
  • each heater 10 is configured to concentrate the heating in its interior opening 12.
  • a heater 10 allows to heat, in a targeted manner, a longitudinal portion of the CC pipe.
  • the peripheral heating body 11 comprises a reflective coating, for example in or, in order to direct the infrared radiation towards its internal opening 12.
  • the coating is disposed on the radially external part of the peripheral heating body 11.
  • the peripheral heating body 11 extends in a plane in order to limit its size.
  • the thickness of the peripheral heating body 11 is between 5 mm and 20 mm. More preferably, the peripheral heating body 11 is substantially annular, in particular in the form of an omega. In this example, the peripheral heating body 11 has a diameter of between 80 mm and 90 mm and makes it possible to heat a CC pipe whose diameter is between 9.52 mm and 50.8 mm. Such a peripheral heating body 11 makes it possible to achieve uniform heating at the periphery of the portion of the CC pipe to be heated. As shown in figure 3 , the heating member 10 comprises a connector 13 extending radially outwards from the peripheral heating body 11.
  • each peripheral heating body 11 extends in a plane orthogonal to the X axis along which the internal openings 12 of the heating members 10 are aligned.
  • two consecutive heating members 10 are spaced apart by an axial distance of between 15 mm and 30 mm so as to perform discreet heating of a plurality of consecutive elementary portions of a CC pipe. Such a spacing makes it possible to continuously heat two consecutive elementary portions of a CC pipe when the two consecutive heating members 10 are activated.
  • the heaters 10 are identical for the sake of simplicity, but it goes without saying that they could be different.
  • the heating module 1 further comprises a peripheral support envelope 14 extending axially which comprises an inner face on which the heating members 10 are supported.
  • the heating members 10 are mounted internally to the heating module 1 .
  • the inner surface of the casing 14 is covered with aluminum, preferably with glossy polished aluminum, in order to concentrate and homogenize the radiation.
  • it has a polygonal section, in this example, dodecagonal to confine the radiation. It goes without saying that an envelope of circular section could also be suitable.
  • the interior surface of the support shell 14 is polished to reflect infrared radiation back to the DC line and minimize absorption of radiation by the support shell 14.
  • each heating member 10 is associated with a closed clamp and two open clamps.
  • the support casing 14 is open at its axial ends to allow the passage of a CC pipe along the X axis.
  • the heating module 1 also comprises cooling means, in particular a fan which is activated according to the temperature measured in the support casing 14.
  • the heating module 1 further comprises a peripheral protective enclosure 15, in which the support casing 14 is mounted, to limit infrared radiation outside the heating module 1.
  • the transport module 4 comprises an automated displacement clamp (not shown) adapted to move the pipe along the axis of displacement X. It goes without saying that the transport module 4 could be in another form.
  • the bending machine 100 comprises a temperature probe (not shown), for example a pyrometer, for measuring the temperature of the heated longitudinal portion of the CC pipe.
  • the transport module 4 is configured to move the CC pipe when a predetermined set temperature is reached.
  • the bending machine 100 further comprises a control module 3 configured to activate a selection of said heating members 10 of the heating module 1.
  • the heating module 1 does not perform heating over the entire length heating module 1 but only over a reduced length.
  • the portion of the CC pipe intended to be bent is heated, the portions which must not be bent not being heated, which limits the risk of mechanical weakening due to the heating.
  • control module 3 is configured to activate the heating module 1 as a function of the parameterization of the deformation module 2.
  • control module 3 makes it possible to coordinate said modules 1, 2 in order to achieve suitable heating. the desired bending, in particular, a predetermined bending angle.
  • control module 3 also makes it possible to coordinate the transport module 4 in order to heat, move and deform a target portion of the CC pipe automatically in order to improve efficiency.
  • control module 3 is in the form of a computer into which bending programs can be entered so as to form, quickly and conveniently, a pipe of the desired shape from a longitudinal pipe.
  • a method of bending at least one longitudinal cylindrical pipe by means of the bending machine 100 will be presented with reference to figures 6 to 9 .
  • the longitudinal cylindrical pipe CC can have a diameter of between 9.52 mm and 50.8 mm, in particular, a diameter of 12.7, 19.05 or 25.4 mm.
  • a first longitudinal portion P1 of the longitudinal cylindrical pipe CC is introduced into the internal openings 12 of the heating members 10 of the heating module 1, in particular, along the X axis of movement. After introduction, the first longitudinal portion P1 extends at the center of the heating members 10 in their interior openings 12.
  • the heating module 1 is then activated so as to heat the first longitudinal portion P1.
  • the 6 heaters 10 are activated by the control module 3.
  • Each heater 10 emits infrared radiation towards its center, that is to say, towards the first longitudinal portion P1 which is thus heated. without being in mechanical contact with said heating member 10.
  • An emission of infrared radiation allows rapid heating as compared to heating by thermal conduction according to the prior art.
  • the transport module 4 moves the first longitudinal portion P1 in the deformation module 2.
  • a temperature probe measures the temperature of the first longitudinal portion P1 and moves it when a set temperature is reached.
  • the CC pipe is moved axially along the X axis of movement.
  • the heating module 1 and the deformation module 2 are close to each other, the first longitudinal portion P1 is still at a high temperature during its deformation.
  • the first longitudinal portion P1 located in the deformation module 2 is moved by the displacement member 20 against the stop member 21 in order to bend it.
  • the bending is carried out quickly and reliably, the risk of damage is limited.
  • the control module 3 makes it possible to coordinate the different modules 1, 2, 4 so that the first longitudinal portion P1 is heated, moved and deformed rapidly in order to obtain a high yield.
  • a second longitudinal portion P2 of the pipe CC can also be heated and deformed.
  • the second longitudinal portion P2 can be heated during the deformation of the first longitudinal portion P1.
  • a second longitudinal portion P2 is located in the heating module 1. Only a part of the heating members 10 is activated by the control module 3 so as to heat only a part P2a of the second longitudinal portion P2. In this example, only 2 heaters 10 are activated. Thanks to the invention, it is possible to define precisely the length of the CC pipe to be heated in order to avoid heating a part which must not be bent. The risk of failure when the material of the pipe is heated, that is to say softened, is thus reduced.
  • the control module 3 receives a bending program so as to form a pipe of the desired shape from a rectilinear longitudinal pipe.
  • the bending program includes a list of longitudinal portions to be bent and the associated bending angle.
  • the control module 3 determines the target longitudinal portion of the CC pipe to be bent and controls heating of said target longitudinal portion by selective activation of the heating members 10 as a function of the bending angle.
  • the control module 3 orders the deformation of said target portion as a function of the parameterization defined in the bending program.
  • control module 3 makes it possible to automate, coordinate and adapt the operation of the bending machine 100 in order to produce the desired pipe.
  • the pipe obtained is robust given that it only undergoes the heating necessary for its bending and, without mechanical contact liable to damage it. Finally, the energy efficiency for bending is greatly improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

DOMAINE TECHNIQUE GENERAL ET ART ANTERIEURGENERAL TECHNICAL FIELD AND PRIOR ART

La présente invention concerne le domaine du cintrage d'une canalisation cylindrique longitudinale, en particulier, pour une application aéronautique. Une telle canalisation permet de conduire tout type de fluide, en particulier, de l'air, de l'eau ou du carburant.The present invention relates to the field of bending a longitudinal cylindrical pipe, in particular, for an aeronautical application. Such a pipe makes it possible to conduct any type of fluid, in particular air, water or fuel.

De manière connue, une canalisation cintrée est obtenue par cintrage d'une canalisation rectiligne au moyen d'une machine de cintrage. Une machine de cintrage comporte communément un module de déformation mécanique qui permet de déformer de manière mécanique une portion de la canalisation. Le module de déformation comporte un organe de déplacement et un organe de butée, l'organe de déplacement étant configuré pour saisir une portion longitudinale de la canalisation afin de la contraindre contre l'organe de butée. Ainsi, la portion longitudinale de la canalisation en contact avec l'organe de butée se déforme et épouse la forme de l'organe de butée. Le module de déformation est avantageusement paramétrable pour régler, par exemple, la longueur de la portion cintrée ou l'angle de cintrage.In known manner, a bent pipe is obtained by bending a straight pipe by means of a bending machine. A bending machine commonly comprises a mechanical deformation module which makes it possible to mechanically deform a portion of the pipe. The deformation module comprises a displacement member and a stop member, the displacement member being configured to grip a longitudinal portion of the pipe in order to force it against the stop member. Thus, the longitudinal portion of the pipe in contact with the stop member is deformed and matches the shape of the stop member. The deformation modulus is advantageously configurable to adjust, for example, the length of the bent portion or the bending angle.

Pour faciliter la déformation de la canalisation, il est connu d'équiper une machine de cintrage avec un module de chauffage pour chauffer la canalisation préalablement à sa déformation. En effet, un chauffage d'une canalisation, en particulier en matière plastique, permet de la ramollir et ainsi faciliter sa déformation en limitant le risque d'endommagement.To facilitate the deformation of the pipe, it is known practice to equip a bending machine with a heating module for heating the pipe prior to its deformation. In fact, heating a pipe, in particular made of plastic material, makes it possible to soften it and thus facilitate its deformation while limiting the risk of damage.

On connaît dans l'art antérieur un module de chauffage comportant deux mors, de formes complémentaires, qui sont adaptés pour, d'une part, serrer entre eux une portion longitudinale de la canalisation et, d'autre part, la chauffer par conduction thermique. Chaque mors est chauffé de manière à ce que la chaleur du mors se transmette par conduction thermique à la portion longitudinale de la canalisation qui est serrée. Un tel module de chauffage ne permet de chauffer qu'une unique longueur de la portion longitudinale de la canalisation, c'est-à-dire, celle égale à la longueur de chaque mors. Aussi, en pratique, des portions longitudinales de la canalisation qui ne doivent pas être déformées peuvent être chauffées, ce qui constitue une perte d'énergie et peut en outre fragiliser la canalisation. Enfin, de tels mors ne permettent de chauffer que des canalisations d'un même diamètre, ce qui oblige de changer de mors pour des canalisations de diamètres différents. Ainsi, l'utilisation de mors entraîne des inconvénients sur le plan de la logistique et ralentit les opérations de cintrage (chauffage lent, changement long, etc.).Known in the prior art is a heating module comprising two jaws, of complementary shapes, which are suitable for, on the one hand, clamping together a longitudinal portion of the pipe and, on the other hand, heating it by thermal conduction. . Each jaw is heated so that the heat from the jaw is transmitted by thermal conduction to the longitudinal portion of the pipe which is clamped. Such a heating module only makes it possible to heat a single length of the longitudinal portion of the pipe, that is to say, that equal to the length of each jaw. Also, in practice, longitudinal portions of the pipe which must not be deformed shapes can be heated, which constitutes a loss of energy and can also weaken the pipe. Finally, such jaws allow only pipes of the same diameter to be heated, which makes it necessary to change the jaw for pipes of different diameters. Thus, the use of jaws leads to logistical drawbacks and slows down the bending operations (slow heating, long change, etc.).

Une machine de cintrage telle que définie dans le préambule de la revendication 1 est connue du document DE 23 29 113 A1 .A bending machine as defined in the preamble of claim 1 is known from document DE 23 29 113 A1 .

L'invention a donc pour but de remédier à ces inconvénients en proposant une nouvelle machine de cintrage et un nouveau procédé de cintrage.The object of the invention is therefore to remedy these drawbacks by proposing a new bending machine and a new bending process.

PRESENTATION GENERALE DE L'INVENTIONGENERAL PRESENTATION OF THE INVENTION

A cet effet, l'invention concerne une machine de cintrage d'au moins une canalisation cylindrique longitudinale, la machine de cintrage comportant au moins un module de chauffage configuré pour chauffer une canalisation cylindrique longitudinale et au moins un module de déformation configuré pour déformer une portion longitudinale d'une canalisation cylindrique longitudinale afin de la cintrer.To this end, the invention relates to a machine for bending at least one longitudinal cylindrical pipe, the bending machine comprising at least one heating module configured to heat a longitudinal cylindrical pipe and at least one deformation module configured to deform a longitudinal portion of a longitudinal cylindrical pipe in order to bend it.

L'invention est remarquable en ce que ledit module de chauffage comporte une pluralité d'organes de chauffage, chaque organe de chauffage comportant un corps périphérique chauffant définissant une ouverture intérieure adaptée pour permettre le passage d'une portion longitudinale d'une canalisation cylindrique longitudinale à chauffer.The invention is remarkable in that said heating module comprises a plurality of heating members, each heating member comprising a peripheral heating body defining an interior opening adapted to allow the passage of a longitudinal portion of a longitudinal cylindrical pipe. to heat.

Un tel module de chauffage permet de chauffer de manière périphérique et de manière homogène une canalisation, ce qui permet de limiter le risque d'endommagement lors du cintrage. En outre, un tel module de chauffage permet un chauffage sans contact, ce qui évite tout endommagement mécanique de la canalisation lors du chauffage. De manière avantageuse, un tel module de chauffage permet de chauffer des canalisations de différents diamètres. Enfin, l'utilisation d'une pluralité d'organes de chauffage dans un même module de chauffage permet de régler la longueur de chauffage et d'éviter le chauffage d'une partie de la canalisation qui ne doit pas être cintrée. Le risque d'endommagement est ainsi limité.Such a heating module makes it possible to heat a pipe in a peripheral manner and in a homogeneous manner, which makes it possible to limit the risk of damage during bending. In addition, such a heating module allows contactless heating, which prevents any mechanical damage to the pipe during heating. Advantageously, such a heating module makes it possible to heat pipes of different diameters. Finally, the use of a plurality of heating elements in the same heating module makes it possible to adjust the heating length and to avoid heating a part of the pipe which must not be bent. The risk of damage is thus limited.

De préférence, les ouvertures intérieures des organes de chauffage sont alignées selon un axe. Ainsi, les organes de chauffage peuvent chauffer des portions élémentaires consécutives de la canalisation longitudinale lorsque celle-ci s'étend selon ledit axe.Preferably, the interior openings of the heaters are aligned along an axis. Thus, the heating members can heat consecutive elementary portions of the longitudinal pipe when the latter extends along said axis.

De préférence, deux organes de chauffage consécutifs sont écartés d'une distance axiale comprise entre 5mm et 50mm, de manière préférée, entre 15 mm et 30 mm. Un tel écartement permet d'assurer un compromis entre un chauffage continu entre deux portions élémentaires consécutives de la canalisation et une limitation du risque de chauffage excessif d'une portion élémentaire de la canalisation du fait de l'accumulation des chauffages générés par lesdits organes de chauffage.Preferably, two consecutive heating members are spaced apart by an axial distance of between 5mm and 50mm, preferably between 15mm and 30mm. Such a spacing makes it possible to ensure a compromise between continuous heating between two consecutive elementary portions of the pipe and a limitation of the risk of excessive heating of an elementary portion of the pipe due to the accumulation of heaters generated by said control members. heater.

De manière préférée, le corps périphérique chauffant s'étend dans un plan afin de limiter son encombrement tout en permettant de chauffer une portion de canalisation de longueur réduite. De préférence, le corps périphérique chauffant possède une épaisseur comprise entre 5 mm et 20 mm. De préférence encore, le corps périphérique chauffant s'étend dans un plan orthogonal à l'axe selon lequel sont alignées les ouvertures intérieures des organes de chauffage de manière à réaliser un chauffage orthogonal à la canalisation.Preferably, the heating peripheral body extends in a plane in order to limit its bulk while allowing heating of a portion of pipe of reduced length. Preferably, the peripheral heating body has a thickness of between 5 mm and 20 mm. More preferably, the peripheral heating body extends in a plane orthogonal to the axis along which the internal openings of the heating members are aligned so as to provide heating orthogonal to the pipe.

De manière préférée, le corps périphérique chauffant est sensiblement annulaire afin de chauffer de manière homogène la périphérie de la canalisation. De préférence, le corps périphérique chauffant possède une forme en oméga, ce qui permet de positionner son connecteur d'alimentation radialement vers l'extérieur. L'encombrement des organes de chauffage dans le module de chauffage est ainsi limité. De préférence, chaque corps périphérique chauffant comporte un diamètre intérieur compris entre 80 mm et 90 mm.Preferably, the peripheral heating body is substantially annular in order to heat the periphery of the pipe in a homogeneous manner. Preferably, the peripheral heating body has an omega shape, which makes it possible to position its power connector radially outwards. The size of the heating members in the heating module is thus limited. Preferably, each peripheral heating body has an internal diameter of between 80 mm and 90 mm.

De préférence, chaque organe de chauffage est configuré pour concentrer le chauffage dans son ouverture intérieure. De manière préférée, le corps périphérique chauffant comporte un revêtement configuré pour orienter ledit chauffage, de préférence, en or.Preferably, each heater is configured to concentrate the heat in its interior opening. Preferably, the peripheral heating body comprises a coating configured to orient said heating, preferably in gold.

De manière préférée, chaque organe de chauffage émet un rayonnement infrarouge. Un tel rayonnement permet de chauffer une portion longitudinale de manière rapide avec un haut rendement.Preferably, each heating member emits infrared radiation. Such radiation makes it possible to heat a longitudinal portion rapidly with high efficiency.

De préférence, le module de chauffage comporte une enveloppe de support périphérique dans laquelle sont montés les organes de chauffage. L'efficacité des organes de chauffage est renforcée car l'enveloppe permet de réfléchir le chauffage. De manière préférée, la surface intérieure de l'enveloppe est recouverte d'aluminium, de préférence, d'aluminium poli glacé.Preferably, the heating module comprises a peripheral support envelope in which the heating members are mounted. The efficiency of the heaters is enhanced because the envelope allows the heating to be reflected. Preferably, the interior surface of the casing is covered with aluminum, preferably glossy polished aluminum.

Selon un aspect préféré, chaque organe de chauffage comporte une pluralité de corps périphériques chauffants, de préférence, juxtaposés.According to a preferred aspect, each heating member comprises a plurality of peripheral heating bodies, preferably juxtaposed.

De préférence, la machine de cintrage comporte un module de commande configuré pour activer une sélection desdits organes de chauffage du module de chauffage. Ainsi, la longueur de la portion longitudinale à chauffer peut être paramétrée afin d'éviter le chauffage d'une partie qui ne doit pas être cintrée.Preferably, the bending machine comprises a control module configured to activate a selection of said heating members of the heating module. Thus, the length of the longitudinal portion to be heated can be configured in order to avoid the heating of a part which must not be bent.

De préférence, le module de commande est configuré pour paramétrer le module de chauffage en fonction du paramétrage du module de déformation. Autrement dit, le chauffage est réalisé sur mesure en fonction du cintrage désiré. Ainsi, seule la portion longitudinale à déformer est chauffée, ce qui limite le risque d'endommagement.Preferably, the control module is configured to parameterize the heating module according to the parameterization of the deformation module. In other words, the heating is made to measure according to the desired bending. Thus, only the longitudinal portion to be deformed is heated, which limits the risk of damage.

L'invention concerne également un procédé de cintrage d'au moins une canalisation cylindrique longitudinale au moyen d'une machine de cintrage telle que présentée précédemment, le procédé comprenant :

  • une étape d'introduction d'une portion longitudinale de la canalisation cylindrique longitudinale dans les ouvertures intérieures des organes de chauffage du module de chauffage,
  • une étape de chauffage d'au moins une partie de la portion longitudinale chauffée par activation d'au moins une partie des organes de chauffage, et
  • une étape de déformation par le module de déformation de la partie de la portion longitudinale de la canalisation cylindrique longitudinale de manière à la cintrer.
The invention also relates to a method of bending at least one longitudinal cylindrical pipe by means of a bending machine as presented above, the method comprising:
  • a step of introducing a longitudinal portion of the longitudinal cylindrical pipe into the interior openings of the heating members of the heating module,
  • a step of heating at least part of the heated longitudinal portion by activating at least part of the heating members, and
  • a step of deformation by the deformation modulus of the part of the longitudinal portion of the longitudinal cylindrical pipe so as to bend it.

Ainsi, une portion longitudinale de la canalisation est chauffée sans contact par le module de chauffage. En outre, la longueur de chauffage peut être adaptée.Thus, a longitudinal portion of the pipe is heated without contact by the heating module. In addition, the heating length can be adapted.

De préférence encore, le procédé comporte une étape de détermination d'une portion longitudinale cible de la canalisation cylindrique longitudinale à cintrer, une étape de chauffage de la portion longitudinale cible par activation sélective des organes de chauffage et une étape de déformation par le module de déformation de ladite portion cible.More preferably, the method comprises a step of determining a target longitudinal portion of the longitudinal cylindrical pipe to be bent, a step of heating the target longitudinal portion by selective activation of the heating members and a step of deformation by the modulus of deformation of said target portion.

Un tel procédé permet un chauffage sur mesure en fonction du cintrage désiré. De manière avantageuse, le risque d'endommagement est limité ainsi que le risque de chauffage excessif.Such a process allows custom heating as a function of the desired bending. Advantageously, the risk of damage is limited as well as the risk of excessive heating.

PRESENTATION DES FIGURESPRESENTATION OF FIGURES

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et se référant aux dessins annexés sur lesquels :

  • la figure 1 est une représentation schématique globale d'une machine de cintrage selon une forme de réalisation de l'invention,
  • la figure 2 est une représentation schématique d'un module de chauffage et d'un module de déformation selon une forme de réalisation de l'invention,
  • la figure 3 est une représentation schématique de face d'un organe de chauffage d'un module de chauffage,
  • les figures 4 et 5 sont des vues en perspective d'une forme de réalisation d'un module de chauffage selon l'invention, et
  • les figures 6 à 9 sont des représentations schématiques d'étapes d'un procédé de cintrage selon l'invention.
The invention will be better understood on reading the description which follows, given solely by way of example, and referring to the appended drawings in which:
  • the figure 1 is an overall schematic representation of a bending machine according to one embodiment of the invention,
  • the figure 2 is a schematic representation of a heating module and of a deformation module according to one embodiment of the invention,
  • the figure 3 is a schematic front view of a heater of a heating module,
  • the figures 4 and 5 are perspective views of an embodiment of a heating module according to the invention, and
  • the figures 6 to 9 are schematic representations of steps of a bending process according to the invention.

Il faut noter que les figures exposent l'invention de manière détaillée pour mettre en oeuvre l'invention, lesdites figures pouvant bien entendu servir à mieux définir l'invention le cas échéant.It should be noted that the figures set out the invention in detail in order to implement the invention, said figures being able of course to serve to better define the invention if necessary.

DESCRIPTION D'UN OU PLUSIEURS MODES DE REALISATION ET DE MISE EN OEUVREDESCRIPTION OF ONE OR MORE EMBODIMENTS AND IMPLEMENTATION

En référence à la figure 1, il est représenté une machine de cintrage 100 d'au moins une canalisation cylindrique longitudinale CC. Une telle canalisation CC peut conduire tout type de fluide, en particulier, de l'air, de l'eau ou du carburant. Il va être présenté par la suite un procédé de cintrage d'une canalisation CC en matériau thermoplastique mais il va de soi que l'invention s'applique également à une canalisation en matériau métallique.With reference to the figure 1 , there is shown a bending machine 100 of at least one longitudinal cylindrical pipe CC. Such a CC pipe can conduct any type of fluid, in particular air, water or fuel. A method of bending a CC pipe made of thermoplastic material will be presented below, but it goes without saying that the invention also applies to a pipe made of metallic material.

La machine de cintrage 100 comporte plusieurs modules pour permettre un cintrage automatisé d'une canalisation CC. En particulier, la machine de cintrage 100 permet de réaliser, de manière consécutive, plusieurs portions longitudinales cintrées sur une même canalisation CC.The bending machine 100 has several modules to allow automated bending of a CC pipe. In particular, the bending machine 100 makes it possible to produce, consecutively, several longitudinal portions bent on the same pipe CC.

Comme représenté de manière schématique à la figure 1, la machine de cintrage 100 comporte un module de chauffage 1, un module de déformation 2, un module de commande 3 et un module de transport 4 destiné à déplacer la canalisation CC du module de chauffage 1 au module de déformation 2.As shown schematically on figure 1 , the bending machine 100 comprises a heating module 1, a deformation module 2, a control module 3 and a transport module 4 intended to move the CC pipe from the heating module 1 to the deformation module 2.

Le module de déformation 2 permet de cintrer une portion longitudinale de la canalisation CC en fonction des souhaits de l'opérateur. Autrement dit, le module de déformation 2 est paramétrable de manière à réaliser des portions cintrées, de longueur et de formes différentes (angle de cintrage, direction de cintrage, etc.).The deformation modulus 2 makes it possible to bend a longitudinal portion of the CC pipe according to the wishes of the operator. In other words, the deformation modulus 2 can be configured so as to produce bent portions of different length and shape (bending angle, bending direction, etc.).

Dans cet exemple, en référence à la figure 2, le module de déformation 2 comporte un organe de déplacement 20, un organe de butée 21 et un organe de pression 22, l'organe de déplacement 20 étant configuré pour contraindre une portion de la canalisation CC contre l'organe de butée 21, appelé également « enclume », pour la cintrer. Un tel module de déformation 2 est connu de l'homme du métier et ne sera pas présenté plus en détails.In this example, with reference to the figure 2 , the deformation module 2 comprises a displacement member 20, a stop member 21 and a pressure member 22, the displacement member 20 being configured to force a portion of the pipe CC against the stop member 21, called also "anvil", to bend it. Such a deformation modulus 2 is known to those skilled in the art and will not be presented in more detail.

Comme illustré à la figure 2, la machine de cintrage 100 comporte un module de chauffage 1 pour chauffer la canalisation CC avant son cintrage par le module de déformation 2. Un chauffage préliminaire permet de faciliter une déformation mécanique de la canalisation CC. En référence à la figure 1, la canalisation CC est adaptée pour se déplacer d'amont en aval selon un axe X dans la machine de cintrage 100. A cet effet, le module de chauffage 1 est situé en amont du module de déformation 2.As shown in figure 2 , the bending machine 100 comprises a heating module 1 for heating the CC pipe before it is bent by the deformation module 2. A preliminary heating makes it possible to facilitate mechanical deformation of the CC pipe. With reference to the figure 1 , the CC pipe is adapted to move from upstream to downstream along an X axis in the bending machine 100. For this purpose, the heating module 1 is located upstream of the deformation module 2.

En référence aux figures 1 et 2, le module de chauffage 1 est situé à proximité du module de déformation 2 de manière à éviter un refroidissement de la canalisation CC lors de son déplacement selon l'axe X entre le module de chauffage 1 et le module de déformation 2. De préférence, la distance axiale entre le module de chauffage 1 et le module de déformation 2 est inférieure à 20 mm. De manière préférée, le module de chauffage 1 est distinct du module de déformation 2 afin d'offrir une plus grande liberté de mouvement au module de déformation 2 lors des étapes de cintrage.With reference to figures 1 and 2 , the heating module 1 is located near the deformation module 2 so as to prevent cooling of the CC pipe during its movement along the X axis between the heating module 1 and the deformation module 2. Preferably, the axial distance between the heating module 1 and the deformation module 2 is less than 20 mm. Preferably, the heating module 1 is separate from the deformation module 2 in order to offer greater freedom of movement to the deformation module 2 during the bending steps.

En référence à la figure 2, le module de chauffage 1 comporte une pluralité d'organes de chauffage 10. Dans cet exemple et à titre d'exemple, le module de chauffage 1 comporte 6 organes de chauffage 10 montés dans une enveloppe de support périphérique 14 qui sera présentée par la suite.With reference to the figure 2 , the heating module 1 comprises a plurality of heating elements 10. In this example and by way of example, the heating module 1 comprises 6 heating elements 10 mounted in a peripheral support envelope 14 which will be presented by the after.

Comme illustré à la figure 3 représentant un organe de chauffage 10 vu de face, chaque organe de chauffage 10 comporte un seul corps périphérique chauffant 11 définissant une ouverture intérieure 12 adaptée pour permettre le passage d'une portion longitudinale d'une canalisation CC à chauffer. Néanmoins, il va de soi qu'un organe de chauffage 10 pourrait comprendre plusieurs corps périphériques chauffants, en particulier, juxtaposés.As shown in figure 3 showing a heating member 10 seen from the front, each heating member 10 comprises a single peripheral heating body 11 defining an interior opening 12 adapted to allow the passage of a longitudinal portion of a CC pipe to be heated. Nevertheless, it goes without saying that a heater 10 could comprise several peripheral heating bodies, in particular, juxtaposed.

Dans cet exemple, chaque organe de chauffage 10 émet un rayonnement infrarouge de manière à chauffer la canalisation CC sans contact. De manière préférée, chaque organe de chauffage 10 émet un rayonnement infrarouge du type à onde courte, par exemple 0,76 à 2 µm, pour une puissance de l'ordre de 900 W, ce qui permet de réaliser un chauffage rapide.In this example, each heater 10 emits infrared radiation so as to heat the DC pipe without contact. Preferably, each heating member 10 emits infrared radiation of the short wave type, for example 0.76 to 2 μm, for a power of the order of 900 W, which enables rapid heating to be carried out.

Dans cet exemple, chaque organe de chauffage 10 est configuré pour concentrer le chauffage dans son ouverture intérieure 12. Un tel organe de chauffage 10 permet de chauffer, de manière ciblée, une portion longitudinale de la canalisation CC. A cet effet, le corps périphérique chauffant 11 comporte un revêtement réflecteur, par exemple en or, afin de diriger le rayonnement infrarouge vers son ouverture intérieure 12. De manière préférée, le revêtement est disposé sur la partie radialement extérieure du corps périphérique chauffant 11. De manière préférée, le corps périphérique chauffant 11 s'étend dans un plan afin de limiter son encombrement.In this example, each heater 10 is configured to concentrate the heating in its interior opening 12. Such a heater 10 allows to heat, in a targeted manner, a longitudinal portion of the CC pipe. For this purpose, the peripheral heating body 11 comprises a reflective coating, for example in or, in order to direct the infrared radiation towards its internal opening 12. Preferably, the coating is disposed on the radially external part of the peripheral heating body 11. Preferably, the peripheral heating body 11 extends in a plane in order to limit its size.

De préférence, l'épaisseur du corps périphérique chauffant 11 est comprise entre 5 mm et 20 mm. De préférence encore, le corps périphérique chauffant 11 est sensiblement annulaire, en particulier, en forme d'oméga. Dans cet exemple, le corps périphérique chauffant 11 possède un diamètre compris entre 80 mm et 90 mm et permet de chauffer une canalisation CC dont le diamètre est compris entre 9,52 mm et 50,8 mm. Un tel corps périphérique chauffant 11 permet de réaliser un chauffage uniforme à la périphérie de la portion de la canalisation CC à chauffer. Comme illustré à la figure 3, l'organe de chauffage 10 comporte un connecteur 13 s'étendant radialement vers l'extérieur depuis le corps périphérique chauffant 11.Preferably, the thickness of the peripheral heating body 11 is between 5 mm and 20 mm. More preferably, the peripheral heating body 11 is substantially annular, in particular in the form of an omega. In this example, the peripheral heating body 11 has a diameter of between 80 mm and 90 mm and makes it possible to heat a CC pipe whose diameter is between 9.52 mm and 50.8 mm. Such a peripheral heating body 11 makes it possible to achieve uniform heating at the periphery of the portion of the CC pipe to be heated. As shown in figure 3 , the heating member 10 comprises a connector 13 extending radially outwards from the peripheral heating body 11.

En référence à la figure 2, les organes de chauffage 10 sont positionnés parallèlement les uns aux autres de manière à ce que les ouvertures intérieures 12 des organes de chauffage 10 soient alignées selon un axe, en particulier, l'axe X de déplacement de la canalisation CC dans la machine de cintrage 100 afin de concentrer le rayonnement sur la canalisation CC. De manière préférée, chaque corps périphérique chauffant 11 s'étend dans un plan orthogonal à l'axe X selon lequel sont alignées les ouvertures intérieures 12 des organes de chauffage 10.With reference to the figure 2 , the heaters 10 are positioned parallel to each other so that the internal openings 12 of the heaters 10 are aligned along an axis, in particular, the X axis of movement of the CC pipe in the machine. bending 100 in order to concentrate the radiation on the CC pipe. Preferably, each peripheral heating body 11 extends in a plane orthogonal to the X axis along which the internal openings 12 of the heating members 10 are aligned.

De manière préférée, deux organes de chauffage 10 consécutifs sont écartés d'une distance axiale comprise entre 15 mm et 30 mm de manière à réaliser un chauffage discret d'une pluralité de portions élémentaires consécutives d'une canalisation CC. Un tel écartement permet de chauffer de manière continue deux portions élémentaires consécutives d'une canalisation CC lorsque les deux organes de chauffage 10 consécutifs sont activés.Preferably, two consecutive heating members 10 are spaced apart by an axial distance of between 15 mm and 30 mm so as to perform discreet heating of a plurality of consecutive elementary portions of a CC pipe. Such a spacing makes it possible to continuously heat two consecutive elementary portions of a CC pipe when the two consecutive heating members 10 are activated.

Dans cet exemple, les organes de chauffage 10 sont identiques par souci de simplicité mais il va de soi qu'ils pourraient être différents.In this example, the heaters 10 are identical for the sake of simplicity, but it goes without saying that they could be different.

Comme illustré en particulier à la figure 4, le module de chauffage 1 comporte en outre une enveloppe de support périphérique 14 s'étendant axialement qui comprend une face intérieure sur laquelle sont supportés les organes de chauffage 10. Autrement dit, les organes de chauffage 10 sont montés intérieurement au module de chauffage 1.As illustrated in particular at figure 4 , the heating module 1 further comprises a peripheral support envelope 14 extending axially which comprises an inner face on which the heating members 10 are supported. In other words, the heating members 10 are mounted internally to the heating module 1 .

De manière préférée, la surface intérieure de l'enveloppe 14 est recouverte d'aluminium, de préférence, d'aluminium poli glacé, afin de concentrer et d'homogénéiser le rayonnement. En outre, elle possède une section polygonale, dans cet exemple, dodécagonale pour confiner le rayonnement. Il va de soi qu'une enveloppe de section circulaire pourrait également convenir. Dans cet exemple, la surface intérieure de l'enveloppe de support 14 est polie pour réfléchir le rayonnement infrarouge vers la canalisation CC et minimiser l'absorption du rayonnement par l'enveloppe de support 14.Preferably, the inner surface of the casing 14 is covered with aluminum, preferably with glossy polished aluminum, in order to concentrate and homogenize the radiation. In addition, it has a polygonal section, in this example, dodecagonal to confine the radiation. It goes without saying that an envelope of circular section could also be suitable. In this example, the interior surface of the support shell 14 is polished to reflect infrared radiation back to the DC line and minimize absorption of radiation by the support shell 14.

Une telle enveloppe de support 14 permet de faciliter le positionnement des organes de chauffage 10 les uns par rapport aux autres et, ce, de manière précise, par exemple, au moyen de pinces de positionnement permettant de maintenir un organe de chauffage 10 (pince fermée) ou de limiter son débattement (pince ouverte). Dans cet exemple, chaque organe de chauffage 10 est associé à une pince fermée et à deux pinces ouvertes. L'enveloppe de support 14 est ouverte à ses extrémités axiales pour permettre le passage d'une canalisation CC selon l'axe X. De manière préférée, le module de chauffage 1 comporte également des moyens de refroidissement, en particulier, un ventilateur qui est activé en fonction de la température mesurée dans l'enveloppe de support 14.Such a support envelope 14 makes it possible to facilitate the positioning of the heating members 10 relative to each other and, in a precise manner, for example, by means of positioning clamps making it possible to hold a heating member 10 (clamp closed ) or limit its travel (clamp open). In this example, each heating member 10 is associated with a closed clamp and two open clamps. The support casing 14 is open at its axial ends to allow the passage of a CC pipe along the X axis. Preferably, the heating module 1 also comprises cooling means, in particular a fan which is activated according to the temperature measured in the support casing 14.

En référence à la figure 5, le module de chauffage 1 comporte en outre une enceinte de protection périphérique 15, dans laquelle est montée l'enveloppe de support 14, pour limiter le rayonnement infrarouge à l'extérieur du module de chauffage 1.With reference to the figure 5 , the heating module 1 further comprises a peripheral protective enclosure 15, in which the support casing 14 is mounted, to limit infrared radiation outside the heating module 1.

Dans cet exemple, en référence à la figure 1, le module de transport 4 comporte une pince de déplacement automatisée (non représentée) adaptée pour déplacer la canalisation selon l'axe de déplacement X. Il va de soi que le module de transport 4 pourrait se présenter sous une autre forme.In this example, with reference to the figure 1 , the transport module 4 comprises an automated displacement clamp (not shown) adapted to move the pipe along the axis of displacement X. It goes without saying that the transport module 4 could be in another form.

De préférence, la machine de cintrage 100 comporte une sonde de température (non représentée) par exemple un pyromètre, pour mesurer la température de la portion longitudinale chauffée de la canalisation CC. Le module de transport 4 est configuré pour déplacer la canalisation CC lorsqu'une température de consigne prédéterminée est atteinte.Preferably, the bending machine 100 comprises a temperature probe (not shown), for example a pyrometer, for measuring the temperature of the heated longitudinal portion of the CC pipe. The transport module 4 is configured to move the CC pipe when a predetermined set temperature is reached.

En référence à la figure 1, la machine de cintrage 100 comporte en outre un module de commande 3 configuré pour activer une sélection desdits organes de chauffage 10 du module de chauffage 1. Ainsi, de manière avantageuse, le module de chauffage 1 ne réalise pas un chauffage sur toute la longueur du module de chauffage 1 mais uniquement sur une longueur réduite. Ainsi, seule la portion de la canalisation CC destinée à être cintrée est chauffée, les portions qui ne doivent pas être cintrées n'étant pas chauffées, ce qui limite le risque d'affaiblissement mécanique du fait du chauffage.With reference to the figure 1 , the bending machine 100 further comprises a control module 3 configured to activate a selection of said heating members 10 of the heating module 1. Thus, advantageously, the heating module 1 does not perform heating over the entire length heating module 1 but only over a reduced length. Thus, only the portion of the CC pipe intended to be bent is heated, the portions which must not be bent not being heated, which limits the risk of mechanical weakening due to the heating.

De manière préférée, le module de commande 3 est configuré pour activer le module de chauffage 1 en fonction du paramétrage du module de déformation 2. Autrement dit, le module de commande 3 permet de coordonner lesdits modules 1,2 afin de réaliser un chauffage adapté au cintrage désiré, en particulier, un angle de cintrage prédéterminé. De préférence encore, le module de commande 3 permet également de coordonner le module de transport 4 afin de chauffer, déplacer et déformer une portion cible de la canalisation CC de manière automatique afin d'améliorer le rendement.Preferably, the control module 3 is configured to activate the heating module 1 as a function of the parameterization of the deformation module 2. In other words, the control module 3 makes it possible to coordinate said modules 1, 2 in order to achieve suitable heating. the desired bending, in particular, a predetermined bending angle. More preferably, the control module 3 also makes it possible to coordinate the transport module 4 in order to heat, move and deform a target portion of the CC pipe automatically in order to improve efficiency.

De préférence, le module de commande 3 se présente sous la forme d'un calculateur dans lequel peuvent être entrés des programmes de cintrage de manière à former, de manière rapide et pratique, une canalisation de forme désirée à partir d'une canalisation longitudinale.Preferably, the control module 3 is in the form of a computer into which bending programs can be entered so as to form, quickly and conveniently, a pipe of the desired shape from a longitudinal pipe.

Un procédé de cintrage d'au moins une canalisation cylindrique longitudinale au moyen de la machine de cintrage 100 va être présenté en référence aux figures 6 à 9.A method of bending at least one longitudinal cylindrical pipe by means of the bending machine 100 will be presented with reference to figures 6 to 9 .

De manière avantageuse, la canalisation cylindrique longitudinale CC peut posséder un diamètre compris entre 9,52 mm et 50,8 mm, en particulier, un diamètre de 12.7, 19.05 ou 25.4 mm.Advantageously, the longitudinal cylindrical pipe CC can have a diameter of between 9.52 mm and 50.8 mm, in particular, a diameter of 12.7, 19.05 or 25.4 mm.

En référence à la figure 6, une première portion longitudinale P1 de la canalisation cylindrique longitudinale CC est introduite dans les ouvertures intérieures 12 des organes de chauffage 10 du module de chauffage 1, en particulier, selon l'axe X de déplacement. Après introduction, la première portion longitudinale P1 s'étend au centre des organes de chauffage 10 dans leurs ouvertures intérieures 12.With reference to the figure 6 , a first longitudinal portion P1 of the longitudinal cylindrical pipe CC is introduced into the internal openings 12 of the heating members 10 of the heating module 1, in particular, along the X axis of movement. After introduction, the first longitudinal portion P1 extends at the center of the heating members 10 in their interior openings 12.

En référence à la figure 7, le module de chauffage 1 est ensuite activé de manière à chauffer la première portion longitudinale P1. Dans cet exemple, les 6 organes de chauffage 10 sont activés par le module de commande 3. Chaque organe de chauffage 10 émet un rayonnement infrarouge vers son centre, c'est-à-dire, vers la première portion longitudinale P1 qui est ainsi chauffée sans être en contact mécanique avec ledit organe de chauffage 10. Une émission d'un rayonnement infrarouge permet un chauffage rapide par comparaison à un chauffage par conduction thermique selon l'art antérieur.With reference to the figure 7 , the heating module 1 is then activated so as to heat the first longitudinal portion P1. In this example, the 6 heaters 10 are activated by the control module 3. Each heater 10 emits infrared radiation towards its center, that is to say, towards the first longitudinal portion P1 which is thus heated. without being in mechanical contact with said heating member 10. An emission of infrared radiation allows rapid heating as compared to heating by thermal conduction according to the prior art.

Ensuite, le module de transport 4 déplace la première portion longitudinale P1 dans le module de déformation 2. De préférence, une sonde de température mesure la température de la première portion longitudinale P1 et la déplace lorsqu'une température de consigne est atteinte.Then, the transport module 4 moves the first longitudinal portion P1 in the deformation module 2. Preferably, a temperature probe measures the temperature of the first longitudinal portion P1 and moves it when a set temperature is reached.

Dans cet exemple, la canalisation CC est déplacée axialement selon l'axe X de déplacement. De manière avantageuse, comme le module de chauffage 1 et le module de déformation 2 sont proches l'un de l'autre, la première portion longitudinale P1 est encore à une température élevée lors de sa déformation.In this example, the CC pipe is moved axially along the X axis of movement. Advantageously, as the heating module 1 and the deformation module 2 are close to each other, the first longitudinal portion P1 is still at a high temperature during its deformation.

En référence à la figure 8, la première portion longitudinale P1 située dans le module de déformation 2 est déplacée par l'organe de déplacement 20 contre l'organe de butée 21 afin de la cintrer. Comme la première portion longitudinale P1 est à une température élevée, le cintrage est réalisé de manière rapide et fiable, le risque d'endommagement est limité.With reference to the figure 8 , the first longitudinal portion P1 located in the deformation module 2 is moved by the displacement member 20 against the stop member 21 in order to bend it. As the first longitudinal portion P1 is at a high temperature, the bending is carried out quickly and reliably, the risk of damage is limited.

Le module de commande 3 permet de coordonner les différents modules 1,2,4 afin que la première portion longitudinale P1 soit chauffée, déplacée et déformée de manière rapide afin d'obtenir un rendement important.The control module 3 makes it possible to coordinate the different modules 1, 2, 4 so that the first longitudinal portion P1 is heated, moved and deformed rapidly in order to obtain a high yield.

Suite au chauffage et à la déformation de la première portion longitudinale P1, une deuxième portion longitudinale P2 de la canalisation CC peut être également chauffée et déformée. De manière avantageuse, la deuxième portion longitudinale P2 peut être chauffée lors de la déformation de la première portion longitudinale P1.Following the heating and the deformation of the first longitudinal portion P1, a second longitudinal portion P2 of the pipe CC can also be heated and deformed. Advantageously, the second longitudinal portion P2 can be heated during the deformation of the first longitudinal portion P1.

En référence à la figure 9, une deuxième portion longitudinale P2 est située dans le module de chauffage 1. Seule une partie des organes de chauffage 10 est activée par le module de commande 3 afin de ne chauffer qu'une partie P2a de la deuxième portion longitudinale P2. Dans cet exemple, seuls 2 organes de chauffage 10 sont activés. Grâce à l'invention, on peut définir de manière précise la longueur de la canalisation CC à chauffer afin d'éviter de chauffer une partie que ne doit pas être cintrée. Le risque de défaut lorsque la matière de la canalisation est chauffée, c'est-à-dire ramollie, est ainsi diminuée.With reference to the figure 9 , a second longitudinal portion P2 is located in the heating module 1. Only a part of the heating members 10 is activated by the control module 3 so as to heat only a part P2a of the second longitudinal portion P2. In this example, only 2 heaters 10 are activated. Thanks to the invention, it is possible to define precisely the length of the CC pipe to be heated in order to avoid heating a part which must not be bent. The risk of failure when the material of the pipe is heated, that is to say softened, is thus reduced.

De manière préférée, le module de commande 3 reçoit un programme de cintrage de manière à former une canalisation de forme désirée à partir d'une canalisation longitudinale rectiligne. Le programme de cintrage comporte une liste de portions longitudinales à cintrer et l'angle de cintrage associé. A cet effet, le module de commande 3 détermine la portion longitudinale cible de la canalisation CC à cintrer et commande un chauffage de ladite portion longitudinale cible par activation sélective des organes de chauffage 10 en fonction de l'angle de cintrage. Le module de commande 3 ordonne la déformation de ladite portion cible en fonction du paramétrage défini dans le programme de cintrage.Preferably, the control module 3 receives a bending program so as to form a pipe of the desired shape from a rectilinear longitudinal pipe. The bending program includes a list of longitudinal portions to be bent and the associated bending angle. To this end, the control module 3 determines the target longitudinal portion of the CC pipe to be bent and controls heating of said target longitudinal portion by selective activation of the heating members 10 as a function of the bending angle. The control module 3 orders the deformation of said target portion as a function of the parameterization defined in the bending program.

Autrement dit, le module de commande 3 permet d'automatiser, de coordonner et d'adapter le fonctionnement de la machine de cintrage 100 afin de réaliser la canalisation désirée. La canalisation obtenue est robuste étant donné qu'elle ne subit que le chauffage nécessaire à son cintrage et, ce, sans contact mécanique susceptible de l'endommager. Enfin, le rendement énergétique pour réaliser un cintrage est grandement amélioré.In other words, the control module 3 makes it possible to automate, coordinate and adapt the operation of the bending machine 100 in order to produce the desired pipe. The pipe obtained is robust given that it only undergoes the heating necessary for its bending and, without mechanical contact liable to damage it. Finally, the energy efficiency for bending is greatly improved.

Claims (9)

  1. A machine for bending (100) at least one longitudinal cylindrical pipe (CC), the bending machine (100) comprising at least one heating module (1) configured to heat a longitudinal cylindrical pipe (CC) and at least one deformation module (2) configured to deform a longitudinal portion of a longitudinal cylindrical pipe (CC) in order to bind it, the bending machine being characterised in that said heating module (1) comprises a plurality of heating members (10) emitting infrared radiation, each heating member (10) comprising a heating peripheral body (11) defining an inner opening (12) adapted for passing therethrough a longitudinal portion of a longitudinal cylindrical pipe (CC) to be heated.
  2. The bending machine (100) according to claim 1, wherein the inner openings (12) of the heating members (10) are aligned along an axis (X).
  3. The bending machine (100) according to claim 2, wherein two consecutive heating members (10) are spaced apart by an axial distance between 5mm and 50mm, preferably, between 15mm and 30mm.
  4. The bending machine (100) according to one of claims 1 to 3, wherein the heating peripheral body (11) extends in a plane.
  5. The bending machine (100) according to one of claims 1 to 4, wherein the heating peripheral body (11) is substantially annular.
  6. The bending machine (100) according to one of claims 1 to 5, wherein each heating member (10) is configured to concentrate heating in its inner opening (12).
  7. The bending machine (100) according to one of claims 1 to 6, wherein the bending machine (100) comprises a control module (3) configured to activate selection of said heating members (10) of the heating module (1).
  8. The bending machine (100) according to claim 7, wherein the control module (3) is configured to parameterise the heating module (1) as a function of the parameterisation of the deformation module (2).
  9. A method for bending at least one longitudinal cylindrical pipe (CC) by means of a bending machine (100) according to one of claims 1 to 8, the method comprising:
    - a step of introducing a longitudinal portion of the longitudinal cylindrical pipe (CC) into inner openings (12) of the heating members (10) of the heating module (1),
    - a step of heating at least one part of the longitudinal portion (CC) by activating at least one part of the heating members (10), and
    - a step of the deforming module (2) deforming the heated part of the longitudinal portion of the longitudinal cylindrical pipe (CC) so as to bend it.
EP17159521.8A 2016-03-11 2017-03-07 Apparatus and method for benid a longitudinal cylindrical canalization Active EP3216535B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1652051A FR3048628B1 (en) 2016-03-11 2016-03-11 MACHINE AND METHOD FOR BENDING A LONGITUDINAL CYLINDRICAL PIPE

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EP3216535A1 EP3216535A1 (en) 2017-09-13
EP3216535B1 true EP3216535B1 (en) 2020-08-05

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US (1) US10471490B2 (en)
EP (1) EP3216535B1 (en)
BR (1) BR102017004415A8 (en)
FR (1) FR3048628B1 (en)

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EP4327008A1 (en) * 2021-04-21 2024-02-28 Lisa Dräxlmaier GmbH Method for fastening a holding part to a cable or tube, and holding part
DE102021131986A1 (en) 2021-12-03 2023-06-07 Wafios Aktiengesellschaft Apparatus for heating bar-shaped material and bending machine therewith
DE102022123815A1 (en) 2022-09-16 2024-03-21 Wafios Aktiengesellschaft Bending machine for bar-shaped material that can only be bent when heated
CN117259521B (en) * 2023-11-14 2024-02-06 成都鑫晨航空科技有限公司 Pipe bending device for aviation pipeline

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DE3173625D1 (en) * 1980-08-05 1986-03-13 Stein Industrie Method and apparatus for bending a long metal object
DE3333912A1 (en) * 1983-09-20 1985-03-28 August Wilhelm 5901 Wilnsdorf Schäfer DEVICE FOR BENDING TUBES ODG.
DE4039567C2 (en) * 1990-02-08 1994-02-24 Schaefer Maschbau Wilhelm Device for bending pipes or the like
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Also Published As

Publication number Publication date
EP3216535A1 (en) 2017-09-13
US10471490B2 (en) 2019-11-12
FR3048628B1 (en) 2018-07-13
BR102017004415A8 (en) 2023-04-18
US20170259318A1 (en) 2017-09-14
FR3048628A1 (en) 2017-09-15
BR102017004415A2 (en) 2017-09-19

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