EP0783929A1 - Machine for the expansion of the tubes of heat exchanger assemblies of the finned type - Google Patents

Machine for the expansion of the tubes of heat exchanger assemblies of the finned type Download PDF

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Publication number
EP0783929A1
EP0783929A1 EP96420284A EP96420284A EP0783929A1 EP 0783929 A1 EP0783929 A1 EP 0783929A1 EP 96420284 A EP96420284 A EP 96420284A EP 96420284 A EP96420284 A EP 96420284A EP 0783929 A1 EP0783929 A1 EP 0783929A1
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EP
European Patent Office
Prior art keywords
head
machine according
barrel
rods
tubes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96420284A
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German (de)
French (fr)
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EP0783929B1 (en
Inventor
François Ballet
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Compagnie Industrielle dApplications Thermiques SA CIAT
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Compagnie Industrielle dApplications Thermiques SA CIAT
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Publication of EP0783929A1 publication Critical patent/EP0783929A1/en
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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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes

Definitions

  • the present invention relates to heat exchange batteries comprising a multitude of fins mounted transversely along a series of rectilinear tubes oriented parallel to each other and connected together by bent connecting portions.
  • expansion rods must be arranged, on the movable head and through the guide carriages and the fixed nose, according to a geometry identical to that of the tubes of the batteries to be worked.
  • this geometry differs very appreciably according to the different types of batteries, depending in particular on the heat exchange capacity provided for them.
  • the invention mainly consists in making the movable head comprise a barrel of polygonal section and equipping at least some of the faces of this barrel with means suitable for securing the rear ends of the expansion rods, these means being arranged according to different geometries so that said barrel is capable, by rotation and locking, of ensuring very quickly the expansion of different types of batteries.
  • the fixing means provided on the faces of the barrel advantageously consist of a movable plate cut out from a series of buttonholes, each of which has on the one hand a part with a semicircular profile capable of accommodating the rear end of one of the expansion rods, on the other hand an elongated portion of small width shaped to accommodate a portion of reduced size of each rod.
  • a jack With this movable plate is associated a jack whose control ensures the longitudinal displacement of said plate against elastic return means which tend to keep this plate in the locked position of the rods. This gives direct mounting and dismounting of all the rods.
  • the guide carriages and the fixed nose are equipped with at least one perforated panel, provided easily removable so that the user can mount in place panels having the geometry corresponding to the type of batteries to work.
  • the movable head and the carriages move along horizontally oriented rails. This avoids having to give the guide carriages a positive movement as the moving head advances, since it is the latter which successively pushes the carriages.
  • Fig. 1 is a schematic side view showing the general arrangement of an expansion machine established in accordance with the invention, the movable head being in its initial retracted position.
  • Fig. 2 reproduced fig. 1 at the advanced position of the movable head.
  • Fig. 3 is a horizontal section of the movable head and its barrel.
  • Fig. 4, 5 and 6 are detail sections illustrating the arrangement and operation of the mechanism provided in the barrel for mounting and locking the expansion rods.
  • Fig. 7 shows in perspective the removable fixing of the perforated panels on the guide carriages.
  • the machine shown in fig. 1 and 2 comprises a frame 1 which extends horizontally on the ground.
  • This frame 1 supports two horizontal rails or guides 2, oriented parallel to each other above the ground.
  • On these rails 2 are suspended a movable head 3, a series of guide carriages 4 and a fixed nose 5.
  • the frame 1 supports a threaded rod or screw 6 which extends over practically the entire length of the machine while being disposed along the mean plane of the rails 2.
  • This rod or screw 6 is rotated by an upper motor 7 with a view to ensuring the slow longitudinal displacement of a nut 8 made integral with the frame of the movable head 3.
  • this chassis Between two longitudinal members 9 (fig. 3) of this chassis is rotatably mounted a barrel 10 which is oriented transversely to the rails 2.
  • this barrel 10 assumed to be of square section, is formed by two lateral hubs 11 on which four massive flanges are fixed 12.
  • the hubs 11 are perforated to receive two pivots 13 carried by the side members 9 of the chassis.
  • one of the pivots 13 is integral with a toothed wheel 14 which meshes with a pinion 15 fixed on a small shaft 16; the latter crosses the longitudinal member 9 adjacent to be equipped with an appropriate operating means, constituted by a steering wheel 17 in the embodiment envisaged.
  • an appropriate operating means constituted by a steering wheel 17 in the embodiment envisaged.
  • two sliding fingers 18 are provided which are elastically engaged in two blind housings 12 a formed in each of the flanges 12.
  • Two small single-acting cylinders 19 ensure the temporary withdrawal of the fingers 18 from the housings 12 a when the user intends to rotate the barrel 10 to bring it to another angular orientation of indexing.
  • each movable plate 21 is cut from a series of buttonholes 21 a , in a number equal to that of the perforations 20 a of the fixed wall 20 which corresponds to it.
  • each plate 21 carries guide rods 22 which play through a spacer 23 so as to be fitted with springs 24. These springs 24 tend to keep the movable plate 21 in abutment against an opposite spacer 25 (fig. 3); at this position, illustrated in fig. 4, each of the perforations 20a of the perforated wall is in register with the elongate portion small width of a buttonhole 21a of the plate 21.
  • a small lateral jack 26, adapted to actuate one of the rods 22 allows to push the plate 21 against the springs 24 in order to bring the semi-circular profile part of each buttonhole 21 a in axial coincidence with one of the perforations 20 a , as shown in fig. 5.
  • each guide carriage 4 comprises two uprights 28, the upper part of which is provided with two pads 29 profiled to cooperate with the rails 2.
  • the lower part of the uprights 28 is integral with two superimposed side members 30 shaped like the runners in view to ensure the sliding mounting of a removable panel 31.
  • the retaining in place of this panel 31 is effected by means of a tilting latch 32 articulated on one of the two side members 30 and equipped with a small lock d 'asset 33; in the high position, this latch 32 keeps the panel 31 in abutment against a stop 34 provided on the upright 28 opposite to that which carries said latch.
  • the panel 31 is cut out of openings 31a arranged in an identical geometry that buttonhole 21a of one of the four plates 21 of the barrel 10 and perforations 20a of one of the perforated walls 20.
  • the operator can very quickly adapt all of the guide carriages 4 to the type of finned batteries to be expanded, the expansion rods passing through the openings 31 a of all the carriages 4 before d '' be locked in the barrel 10.
  • Each battery to work referenced B in fig. 1 and 2
  • B in fig. 1 and 2 is arranged and fixed immediately in front of the nose 5, using a loading and retaining device of conventional type, the tubes of said battery opening opposite the nose.
  • the movable head 3 is in the retracted position illustrated in FIG. 1, the carriages 4 being placed at intervals made regular by chains 35 connecting them to each other.
  • the expansion rods 27 being suitably placed, it suffices to actuate the geared motor 7 associated with the screw 6 to operate the slow displacement of the head 3 and the forceful insertion of the rods 27 into the tubes of the battery B , the guide carriages 4 being themselves successively moved by the advance movement of the head 3. This thus arrives at the position shown in fig. 2 and it is understood that the rotation of the screw 6 in the opposite direction ensures the return of the assembly to the position according to fig. 1.
  • Adapting the machine to another type of B battery can be achieved very quickly.
  • the rods 27 are removed from the head 3 by actuating the jack 26 coupled to the sliding plate 21 which held them, and they are released from the carriages 4 and from the nose 5 by the front of the machine.
  • the steering wheel 17 is maneuvered to bring the play 20-21 comprising the desired geometry to the useful position and the perforated panels 31 of the carriages 4 and of the nose 5 are replaced by those having the geometry in question. It then suffices to engage the rods 27 in the new panels and in the head 3 and to stop the control of the jack 26, the springs 26 then bringing the plate 21 to the locked position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Secondary Cells (AREA)

Abstract

A movable head (3) includes spreader shafts (27), guide carriages (4), a fixed end block (5) and a drive (6-8). A cylinder (10) of polygonal cross-section is attached to the head, with at least some of its faces having attachment points of different configurations for the rear ends of the spreader shafts. The attachment points are formed by perforations, e.g. of keyhole shape, in the cylinder surface which cooperate with a mobile plate with similar perforations. The rear ends of the spreader shafts include a narrowed portion close to the ends, defining an end head which engages in the keyhole-shaped perforations for selective fastening.

Description

La présente invention a trait aux batteries d'échange thermique comprenant une multitude d'ailettes montées transversalement le long d'une série de tubes rectilignes orientés parallèlement les uns aux autres et reliés entre eux par des portions coudées de raccordement.The present invention relates to heat exchange batteries comprising a multitude of fins mounted transversely along a series of rectilinear tubes oriented parallel to each other and connected together by bent connecting portions.

On sait que pour assurer une fixation parfaite des ailettes sur les tubes et améliorer ainsi la transmission thermique entre lesdites ailettes et tubes, il est nécessaire, une fois les ailettes provisoirement montées le long des tubes et préalablement à la pose des portions coudées de raccordement, de procéder à la dilatation à force de ces tubes. Cette opération est le plus souvent réalisée en introduisant dans chacun des tubes de la batterie une tige pourvue d'un embout en forme d'olive dont le diamètre est légèrement supérieur au diamètre interne des tubes.We know that to ensure perfect attachment of the fins on the tubes and thus improve the thermal transmission between said fins and tubes, it is necessary, once the fins are temporarily mounted along the tubes and prior to the installation of the angled connection portions, to force-dilate these tubes. This operation is most often carried out by introducing into each of the tubes of the battery a rod provided with an olive-shaped endpiece whose diameter is slightly greater than the internal diameter of the tubes.

Les documents US-A-3 487 (AMES), FR-A-2 369 033 (CHAUSSON) et US-A-4 738 130 (HOMMA) illustrent bien cette technique.Documents US-A-3,487 (AMES), FR-A-2,369,033 (CHAUSSON) and US-A-4,738,130 (HOMMA) illustrate this technique well.

Pour obtenir l'enfoncement simultané de l'ensemble des tiges de dilatation, on a généralement recours à des machines semblables à des presses qui comportent une tête mobile équipée d'une série de tiges parallèles, et un nez fixe au droit duquel est retenue la batterie à dilater. Entre la tête et le nez sont prévus des chariots de guidage propres à éviter tout flambage intempestif des tiges.To obtain the simultaneous insertion of all of the expansion rods, use is generally made of machines similar to presses which have a movable head equipped with a series of parallel rods, and a fixed nose to the right of which is retained the battery to expand. Guide carriages are provided between the head and the nose to prevent untimely buckling of the rods.

Bien évidemment les tiges de dilatation doivent être disposées, sur la tête mobile et au travers des chariots de guidage et du nez fixe, suivant une géométrie identique à celle des tubes des batteries à travailler. Or cette géométrie diffère très sensiblement suivant les différents types de batteries, en fonction notamment de la capacité d'échange thermique prévue pour celles-ci.Obviously the expansion rods must be arranged, on the movable head and through the guide carriages and the fixed nose, according to a geometry identical to that of the tubes of the batteries to be worked. However, this geometry differs very appreciably according to the different types of batteries, depending in particular on the heat exchange capacity provided for them.

On conçoit dans ces conditions que l'adaptation d'une machine de dilatation à un nouveau type de batteries implique un travail long et fastidieux du fait qu'il y a lieu de démonter les tiges fixées sur la tête mobile, de les dégager des chariots de guidage et du nez fixe, de changer les plaques intermédiaires, de réengager ces tiges suivant la nouvelle géométrie et de les assujettir à nouveau sur la tête. Ces opérations, confiées à un personnel spécialisé, se révèlent très coûteuses, ne serait-ce que par suite de l'arrêt prolongé du cycle de fabrication des batteries échangeuses.It is therefore conceivable that the adaptation of a dilation machine to a new type of battery involves long and tedious work because it is necessary to dismantle the rods fixed on the movable head, to disengage them from the carriages guide and fixed nose, to change the intermediate plates, to re-engage these rods according to the new geometry and to subject them again on the head. These operations, entrusted to specialized personnel, prove to be very expensive, if only as a result of the prolonged stoppage of the manufacturing cycle of the exchanger batteries.

C'est à cet inconvénient qu'entend plus particulièrement remédier la présente invention, laquelle a pour objet la machine qui est définie à la revendication 1.It is to this drawback that the present invention more particularly intends to remedy, which relates to the machine which is defined in claim 1.

En fait l'invention consiste principalement à faire comporter à la tête mobile un barillet à section polygonale et équiper certaines au moins des faces de ce barillet de moyens propres à assurer la fixation des extrémités arrière des tiges de dilatation, ces moyens étant disposés suivant des géométries différentes de manière à ce que ledit barillet soit susceptible, moyennant rotation et verrouillage, d'assurer très rapidement la dilatation de différents types de batteries.In fact, the invention mainly consists in making the movable head comprise a barrel of polygonal section and equipping at least some of the faces of this barrel with means suitable for securing the rear ends of the expansion rods, these means being arranged according to different geometries so that said barrel is capable, by rotation and locking, of ensuring very quickly the expansion of different types of batteries.

Les moyens de fixation prévus sur les faces du barillet sont avantageusement constitués par une plaque mobile découpée d'une série de boutonnières dont chacune présente d'une part une partie à profil semi-circulaire apte à accueillir l'extrémité arrière de l'une des tiges de dilatation, d'autre part une partie allongée à petite largeur conformée pour accueillir une portion de dimension réduite de chaque tige. A cette plaque mobile est associé un vérin dont la commande assure le déplacement longitudinal de ladite plaque à l'encontre de moyens élastiques de rappel qui tendent à maintenir cette plaque à la positon verrouillée des tiges. On obtient ainsi le montage et le démontage directs de l'ensemble des tiges.The fixing means provided on the faces of the barrel advantageously consist of a movable plate cut out from a series of buttonholes, each of which has on the one hand a part with a semicircular profile capable of accommodating the rear end of one of the expansion rods, on the other hand an elongated portion of small width shaped to accommodate a portion of reduced size of each rod. With this movable plate is associated a jack whose control ensures the longitudinal displacement of said plate against elastic return means which tend to keep this plate in the locked position of the rods. This gives direct mounting and dismounting of all the rods.

Suivant une autre caractéristique de l'invention, les chariots de guidage et le nez fixe sont équipés d'au moins un panneau perforé, prévu facilement amovible de façon à ce que l'utilisateur puisse monter en place des panneaux comportant la géométrie correspondant au type de batteries à travailler.According to another characteristic of the invention, the guide carriages and the fixed nose are equipped with at least one perforated panel, provided easily removable so that the user can mount in place panels having the geometry corresponding to the type of batteries to work.

Par ailleurs et conformément à un mode de mise en oeuvre préféré de l'invention, la tête mobile et les chariots se déplacent le long de rails orientés horizontalement. On évite ainsi d'avoir à conférer aux chariots de guidage un déplacement positif au fur et à mesure de l'avance de la tête mobile, puisque c'est cette dernière qui repousse successivement les chariots.Furthermore and in accordance with a preferred embodiment of the invention, the movable head and the carriages move along horizontally oriented rails. This avoids having to give the guide carriages a positive movement as the moving head advances, since it is the latter which successively pushes the carriages.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:

Fig. 1 est une vue de côté schématique montrant l'agencement général d'une machine de dilatation établie conformément l'invention, la tête mobile étant à sa position initiale reculée.Fig. 1 is a schematic side view showing the general arrangement of an expansion machine established in accordance with the invention, the movable head being in its initial retracted position.

Fig. 2 reproduit fig. 1 à la position avancée de la tête mobile.Fig. 2 reproduced fig. 1 at the advanced position of the movable head.

Fig. 3 est une coupe horizontale de la tête mobile et de son barillet.Fig. 3 is a horizontal section of the movable head and its barrel.

Fig. 4, 5 et 6 sont des coupes de détail illustrant l'agencement et le fonctionnement du mécanisme prévu dans le barillet pour le montage et le verrouillage des tiges de dilatation.Fig. 4, 5 and 6 are detail sections illustrating the arrangement and operation of the mechanism provided in the barrel for mounting and locking the expansion rods.

Fig. 7 montre en perspective la fixation amovible des panneaux perforées sur les chariots de guidage.Fig. 7 shows in perspective the removable fixing of the perforated panels on the guide carriages.

La machine représentée en fig. 1 et 2 comprend un bâti 1 qui s'étend horizontalement sur le sol. Ce bâti 1 supporte deux rails ou guides horizontaux 2, orientés parallèlement l'un à l'autre au-dessus du sol. Sur ces rails 2 sont suspendus une tête mobile 3, une série de chariots de guidage 4 et un nez fixe 5.The machine shown in fig. 1 and 2 comprises a frame 1 which extends horizontally on the ground. This frame 1 supports two horizontal rails or guides 2, oriented parallel to each other above the ground. On these rails 2 are suspended a movable head 3, a series of guide carriages 4 and a fixed nose 5.

Au-dessus des rails 2, le bâti 1 supporte une tige filetée ou vis 6 qui s'étend sur pratiquement toute la longueur de la machine en étant disposée suivant le plan moyen des rails 2. Cette tige ou vis 6 est entraînée en rotation par un moteur supérieur 7 en vue d'assurer le déplacement longitudinal lent d'un écrou 8 rendu solidaire du châssis de la tête mobile 3.Above the rails 2, the frame 1 supports a threaded rod or screw 6 which extends over practically the entire length of the machine while being disposed along the mean plane of the rails 2. This rod or screw 6 is rotated by an upper motor 7 with a view to ensuring the slow longitudinal displacement of a nut 8 made integral with the frame of the movable head 3.

Entre deux longerons 9 (fig. 3) de ce châssis est monté à rotation un barillet 10 qui est orienté transversalement aux rails 2. Dans l'exemple de réalisation envisagé, ce barillet 10, supposé à section carrée, est formé par deux moyeux latéraux 11 sur lesquels sont fixés quatre flasques massifs 12. Les moyeux 11 sont perforés pour recevoir deux pivots 13 portés par les longerons 9 du châssis.Between two longitudinal members 9 (fig. 3) of this chassis is rotatably mounted a barrel 10 which is oriented transversely to the rails 2. In the envisaged embodiment, this barrel 10, assumed to be of square section, is formed by two lateral hubs 11 on which four massive flanges are fixed 12. The hubs 11 are perforated to receive two pivots 13 carried by the side members 9 of the chassis.

On observera que l'un des pivots 13 est solidaire d'une roue dentée 14 qui engrène avec un pignon 15 calé sur un petit arbre 16 ; ce dernier traverse le longeron 9 adjacent pour être équipé d'un moyen de manoeuvre approprié, constitué par un volant 17 dans l'exemple de réalisation envisagé. A l'opposé de ce mécanisme de manoeuvre en rotation sont prévus deux doigts coulissants 18 élastiquement engagés dans deux logements borgnes 12a pratiqués dans chacun des flasques 12. Deux petits vérins 19 à simple effet assurent le retrait momentané des doigts 18 hors des logements 12a lorsque l'utilisateur entend faire tourner le barillet 10 pour l'amener à une autre orientation angulaire d'indexation.It will be observed that one of the pivots 13 is integral with a toothed wheel 14 which meshes with a pinion 15 fixed on a small shaft 16; the latter crosses the longitudinal member 9 adjacent to be equipped with an appropriate operating means, constituted by a steering wheel 17 in the embodiment envisaged. Opposite this rotary operating mechanism, two sliding fingers 18 are provided which are elastically engaged in two blind housings 12 a formed in each of the flanges 12. Two small single-acting cylinders 19 ensure the temporary withdrawal of the fingers 18 from the housings 12 a when the user intends to rotate the barrel 10 to bring it to another angular orientation of indexing.

En avant de chacun des quatre flasques 12 du barillet 10 est prévue une paroi perforée 20 disposée à une faible distance du flasque correspondant afin de ménager avec celui-ci un logement pour le montage coulissant d'une plaque 21. Comme montré en fig. 4 et 5, chaque plaque mobile 21 est découpée d'une série de boutonnières 21a, en nombre égal à celui des perforations 20a de la paroi fixe 20 qui lui correspond.In front of each of the four flanges 12 of the barrel 10 is provided a perforated wall 20 disposed at a short distance from the corresponding flange in order to provide therewith a housing for the sliding mounting of a plate 21. As shown in fig. 4 and 5, each movable plate 21 is cut from a series of buttonholes 21 a , in a number equal to that of the perforations 20 a of the fixed wall 20 which corresponds to it.

L'un des bords transversaux de chaque plaque 21 porte des tiges de guidage 22 qui traversent avec jeu une entretoise 23 pour être équipées de ressorts 24. Ces ressorts 24 tendent à maintenir la plaque mobile 21 en appui contre une entretoise opposée 25 (fig. 3) ; à cette position, illustrée en fig. 4, chacune des perforations 20a de la paroi perforée se trouve en coïncidence avec la partie allongée à petite largeur de l'une des boutonnières 21a de la plaque 21. Un petit vérin latéral 26, apte à actionner l'une des tiges 22, permet de repousser la plaque 21 à l'encontre des ressorts 24 afin d'amener la partie à profil semi-circulaire de chaque boutonnière 21a en coïncidence axiale avec l'une des perforations 20a, comme montré en fig. 5.One of the transverse edges of each plate 21 carries guide rods 22 which play through a spacer 23 so as to be fitted with springs 24. These springs 24 tend to keep the movable plate 21 in abutment against an opposite spacer 25 (fig. 3); at this position, illustrated in fig. 4, each of the perforations 20a of the perforated wall is in register with the elongate portion small width of a buttonhole 21a of the plate 21. A small lateral jack 26, adapted to actuate one of the rods 22 , allows to push the plate 21 against the springs 24 in order to bring the semi-circular profile part of each buttonhole 21 a in axial coincidence with one of the perforations 20 a , as shown in fig. 5.

On comprend que les dessins des perforations 20a et des boutonnières 21a des quatre jeux de parois 20 et de plaques mobiles 21 du barrrilet 10 peuvent être différents pour correspondre aux géométries des tubes de quatre types de batteries ailetées. L'actionnement momentané des vérins d'indexage 19 et du volant de manoeuvre 17 (qui peut bien entendu être remplacé par un petit moteur) permet d'amener le barillet 10 à une position angulaire telle que le jeu 20-21 disposé verticalement face au nez fixe 5 correspond au type des batteries ailetées à dilater.It is understood that the drawings of the perforations 20a and buttonholes 21 has four sets of walls 20 and movable plate 21 of barrrilet 10 may be different to match the geometry of the tubes of four types of finned coils. The momentary actuation of the indexing cylinders 19 and the handwheel 17 (which can of course be replaced by a small motor) makes it possible to bring the barrel 10 to an angular position such that the clearance 20-21 disposed vertically facing the fixed nose 5 corresponds to the type of finned batteries to expand.

Il suffit alors à l'opérateur d'actionner le vérin 26 pour amener la plaque mobile 21 à la position d'engagement suivant fig. 5. A ce moment et comme montré en fig. 6, l'extrémité arrière des tiges de dilatation 27 peut être engagée dans les perforations 20a et dans la partie semi-circulaire des boutonnières 21a jusqu'à prendre appui contre le flasque 12 envisagé. On fait alors cesser l'actionnement du vérin 26, de sorte que les ressorts 24 tendent à ramener la plaque mobile 21 à la position verrouillée suivant fig. 4. Ce retour est rendu possible par suite d'une gorge 27a ménagée sur chaque tige 27, cette gorge définissant une portion à section amincie dont le diamètre correspond substantiellement à la largeur de la partie allongée de chaque boutonnière 21a. Les tiges 27 sont alors fermement verrouillées.It then suffices for the operator to actuate the jack 26 to bring the movable plate 21 to the engagement position according to FIG. 5. At this time and as shown in fig. 6, the rear end of the expansion rods 27 can be engaged in the perforations 20 a and in the semi-circular part of the buttonholes 21 a until they bear against the flange 12 envisaged. The actuation of the jack 26 is then stopped, so that the springs 24 tend to bring the movable plate 21 back to the locked position according to FIG. 4. This return is made possible as a result of a groove 27 a formed on each rod 27, this groove defining a portion to be thinned section whose diameter substantially corresponds to the width of the elongated portion of each buttonhole 21a. The rods 27 are then firmly locked.

Comme montré en fig. 7, chaque chariot de guidage 4 comprend deux montants 28 dont la partie supérieure est pourvue de deux patins 29 profilés pour coopérer avec les rails 2. La partie inférieure des montants 28 est solidaire de deux longerons 30 superposés conformés à la manière de coulisses en vue d'assurer le montage coulissant d'un panneau amovible 31. La retenue en place de ce panneau 31 est opérée à l'aide d'un loquet basculant 32 articulé sur l'un des deux longerons 30 et équipé d'un petit verrou d'immobilisation 33 ; en position haute, ce loquet 32 maintient le panneau 31 en appui contre une butée 34 prévue sur le montant 28 opposé à celui qui porte ledit loquet.As shown in fig. 7, each guide carriage 4 comprises two uprights 28, the upper part of which is provided with two pads 29 profiled to cooperate with the rails 2. The lower part of the uprights 28 is integral with two superimposed side members 30 shaped like the runners in view to ensure the sliding mounting of a removable panel 31. The retaining in place of this panel 31 is effected by means of a tilting latch 32 articulated on one of the two side members 30 and equipped with a small lock d 'asset 33; in the high position, this latch 32 keeps the panel 31 in abutment against a stop 34 provided on the upright 28 opposite to that which carries said latch.

On conçoit que le panneau 31 est découpé d'ouvertures 31a disposées suivant une géométrie identique celle des boutonnières 21a de l'une des quatre plaques 21 du barillet 10 et des perforations 20a de l'une des parois perforées 20. Dans ces conditons, disposant de quatre types de panneaux 31 différents, l'opérateur peut très rapidement adapter l'ensemble des chariots de guidage 4 au type des batteries ailetées à dilater, les tiges de dilatation traversant les ouvertures 31a de tous les chariots 4 avant d'être verrouillées dans le barillet 10.It is appreciated that the panel 31 is cut out of openings 31a arranged in an identical geometry that buttonhole 21a of one of the four plates 21 of the barrel 10 and perforations 20a of one of the perforated walls 20. In these conditons, having four different types of panels 31, the operator can very quickly adapt all of the guide carriages 4 to the type of finned batteries to be expanded, the expansion rods passing through the openings 31 a of all the carriages 4 before d '' be locked in the barrel 10.

Un agencement identique est adopté pour le nez 5 suspendu et fixé à demeure en bout des rails 2. Dans la construction illustrée en fig. 1 et 2, on a supposé que ce nez fixe 5 était muni de deux panneaux perforés 31, maintenus parallèlement l'un l'autre à l'aide de loquets 32.An identical arrangement is adopted for the nose 5 suspended and fixed permanently at the end of the rails 2. In the construction illustrated in FIG. 1 and 2, it was assumed that this fixed nose 5 was provided with two perforated panels 31, held parallel to one another by means of latches 32.

Le fonctionnement général de la machine suivant l'invention est analogue à celui des machines verticales classiques. Chaque batterie à travailler, référencée B en fig. 1 et 2, est disposée et fixée immédiatement en avant du nez 5, à l'aide d'un dispositif de chargement et de retenue de type conventionnel, les tubes de ladite batterie s'ouvrant en vis-à-vis du nez. La tête mobile 3 est à la position reculée illustrée en fig. 1, les chariots 4 étant placés à des intervalles rendus réguliers par des chaînettes 35 les reliant les uns aux autres.The general operation of the machine according to the invention is analogous to that of conventional vertical machines. Each battery to work, referenced B in fig. 1 and 2, is arranged and fixed immediately in front of the nose 5, using a loading and retaining device of conventional type, the tubes of said battery opening opposite the nose. The movable head 3 is in the retracted position illustrated in FIG. 1, the carriages 4 being placed at intervals made regular by chains 35 connecting them to each other.

Les tiges de dilatation 27 étant convenablement mises en place, il suffit d'actionner le moto-réducteur 7 associé à la vis 6 pour opérer le déplacement lent de la tête 3 et l'enfoncement force des tiges 27 dans les tubes de la batterie B, les chariots de guidage 4 étant eux-mêmes successivement déplacés par le mouvement d'avance de la tête 3. On arrive ainsi à la position représentée en fig. 2 et l'on comprend que la rotation de la vis 6 en sens inverse assure le retour de l'ensemble à la position suivant fig. 1.The expansion rods 27 being suitably placed, it suffices to actuate the geared motor 7 associated with the screw 6 to operate the slow displacement of the head 3 and the forceful insertion of the rods 27 into the tubes of the battery B , the guide carriages 4 being themselves successively moved by the advance movement of the head 3. This thus arrives at the position shown in fig. 2 and it is understood that the rotation of the screw 6 in the opposite direction ensures the return of the assembly to the position according to fig. 1.

L'adaptation de la machine à un autre type de batteries B est susceptible d'être réalisée très rapidement. Les tiges 27 sont démontées de la tête 3 moyennant actionnement du vérin 26 attelé à la plaque coulissante 21 qui les maintenait, et elles sont dégagées des chariots 4 et du nez 5 par l'avant de la machine. Après actionnement des vérins d'indexage 19, le volant 17 est manoeuvré pour amener à la position utile le jeu 20-21 comportant la géométrie désirée et l'on remplace les panneaux perforés 31 des chariots 4 et du nez 5 par ceux présentant la géométrie en cause. Il suffit alors d'engager les tiges 27 dans les nouveaux panneaux et dans la tête 3 et de faire cesser la commande du vérin 26, les ressorts 26 ramenant alors la plaque 21 à la position de verrouillage.Adapting the machine to another type of B battery can be achieved very quickly. The rods 27 are removed from the head 3 by actuating the jack 26 coupled to the sliding plate 21 which held them, and they are released from the carriages 4 and from the nose 5 by the front of the machine. After actuation of the indexing cylinders 19, the steering wheel 17 is maneuvered to bring the play 20-21 comprising the desired geometry to the useful position and the perforated panels 31 of the carriages 4 and of the nose 5 are replaced by those having the geometry in question. It then suffices to engage the rods 27 in the new panels and in the head 3 and to stop the control of the jack 26, the springs 26 then bringing the plate 21 to the locked position.

Il n'est pas sans intérêt d'observer que l'orientation horizontale de la machine simplifie l'ensemble des manoeuvres d'adaptation, les opérateurs pouvant se placer latéralement en avant du nez 5.It is not without interest to observe that the horizontal orientation of the machine simplifies all of the adaptation maneuvers, the operators being able to position themselves laterally in front of the nose 5.

Claims (7)

Machine pour la dilatation des tubes des batteries d'échange thermique du type aileté, du genre comprenant une tête mobile (3) équipée de tiges de dilatation (27), une série de chariots de guidage (4), un nez fixe (5) et des moyens (6-7-8) pour déplacer ladite tête et enfoncer ainsi à force les tiges précitées dans les tubes d'une batterie (B) maintenue fixe en avant du nez, caractérisée en ce que la tête mobile (3) comporte un barillet (10) à section polygonale dont certaines au moins des faces sont équipées de moyens (20-21) propres à assurer la fixation des extrémités arrière des tiges de dilatation (27), lesquels moyens sont disposés suivant des géométries différentes sur les différentes faces du barillet précité.Machine for expanding the tubes of heat exchange coils of the finned type, of the type comprising a movable head (3) equipped with expansion rods (27), a series of guide carriages (4), a fixed nose (5) and means (6-7-8) for moving said head and thus forcing the above-mentioned rods into the tubes of a battery (B) held fixed in front of the nose, characterized in that the movable head (3) comprises a barrel (10) of polygonal section, at least some of the faces of which are equipped with means (20-21) suitable for fixing the rear ends of the expansion rods (27), which means are arranged in different geometries on the different faces of the aforementioned barrel. Machine suivant la revendication 1, caractérisée en ce que les moyens de fixation portés par certaines au moins des faces du barillet comprennent en combinaison une paroi antérieure perforée (20) et une plaque mobile (21) percée de boutonnières (21a) disposées en coïncidence avec les perforations (20a) de la paroi précités.Machine according to claim 1, characterized in that the fixing means carried by at least some of the faces of the barrel comprise in combination a perforated anterior wall (20) and a movable plate (21) pierced with buttonholes (21 a ) arranged in coincidence with the aforementioned perforations (20 a ) of the wall. Machine suivant la revendication 2, caractérisée en ce que les boutonnières (21a) de la plaque mobile (21) présentent une première partie à profil semi-circulaire et une seconde partie à profil allongé dont la largeur est inférieure au diamètre de la première partie, tandis que l'extrémité arrière de chacune des tiges (27) comporte une partie amincie ou gorge (27a).Machine according to claim 2, characterized in that the buttonholes (21 a ) of the movable plate (21) have a first part with a semi-circular profile and a second part with an elongated profile whose width is less than the diameter of the first part , while the rear end of each of the rods (27) has a thinned part or groove (27 a ). Machine suivant la revendication 3, caractérisée en ce qu'à chaque plaque mobile (21) sont associés d'une part des moyens élastiques (24) aptes à la maintenir en position de verrouillage, d'autre part un vérin (26) propre à la repousser à l'encontre de ces moyens élastiques.Machine according to claim 3, characterized in that each movable plate (21) is associated on the one hand with elastic means (24) able to keep it in the locked position, on the other hand with a jack (26) suitable for push it against these elastic means. Machine suivant l'une quelconque des revendications 1 à 4, caractérisée en ce qu'au barillet (10) sont associés d'une part un mécanisme de manoeuvre en rotation (17), d'autre part des moyens d'indexage (18-19).Machine according to any one of claims 1 to 4, characterized in that on the barrel (10) are associated on the one hand a rotary operating mechanism (17), on the other hand indexing means (18- 19). Machine suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que les chariots de guidage (4) et le nez fixe (5) sont conformés pour recevoir au moins un panneau perforé amovible (31) convenablement retenu en place.Machine according to any one of claims 1 to 5, characterized in that the guide carriages (4) and the fixed nose (5) are shaped to receive at least one removable perforated panel (31) suitably retained in place. Machine suivant l'une quelconque des revendications 1 à 6, caractérisée en ce que la tête (3) et les chariots de guidage (4) sont mobiles le long de rails (2) orientés à l'horizontale.Machine according to any one of claims 1 to 6, characterized in that the head (3) and the guide carriages (4) are movable along rails (2) oriented horizontally.
EP19960420284 1995-08-29 1996-08-28 Machine for the expansion of the tubes of heat exchanger assemblies of the finned type Expired - Lifetime EP0783929B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510320A FR2738170B1 (en) 1995-08-29 1995-08-29 MACHINE FOR THE EXPANSION OF THE TUBES OF THE THERMAL EXCHANGE BATTERIES OF THE WINGED TYPE
FR9510320 1995-08-29

Publications (2)

Publication Number Publication Date
EP0783929A1 true EP0783929A1 (en) 1997-07-16
EP0783929B1 EP0783929B1 (en) 2000-10-11

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Application Number Title Priority Date Filing Date
EP19960420284 Expired - Lifetime EP0783929B1 (en) 1995-08-29 1996-08-28 Machine for the expansion of the tubes of heat exchanger assemblies of the finned type

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EP (1) EP0783929B1 (en)
DE (1) DE69610607T2 (en)
ES (1) ES2150651T3 (en)
FR (1) FR2738170B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487523A (en) * 1967-12-11 1970-01-06 Tridan Tool & Machine Apparatus for selectively engaging any one or more of a plurality of rods for operation
FR2369033A1 (en) * 1976-10-28 1978-05-26 Chausson Usines Sa PROCE
US4738130A (en) * 1985-11-08 1988-04-19 Kyoshin Kogyo Kabushiki Kaisha Structure for mounting mandrels in tube expanding apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487523A (en) * 1967-12-11 1970-01-06 Tridan Tool & Machine Apparatus for selectively engaging any one or more of a plurality of rods for operation
FR2369033A1 (en) * 1976-10-28 1978-05-26 Chausson Usines Sa PROCE
US4738130A (en) * 1985-11-08 1988-04-19 Kyoshin Kogyo Kabushiki Kaisha Structure for mounting mandrels in tube expanding apparatus

Also Published As

Publication number Publication date
DE69610607T2 (en) 2001-05-23
DE69610607D1 (en) 2000-11-16
ES2150651T3 (en) 2000-12-01
FR2738170B1 (en) 1997-10-24
FR2738170A1 (en) 1997-03-07
EP0783929B1 (en) 2000-10-11

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