EP0620057A1 - Die out of two pieces for swaging and/or crimping press. - Google Patents

Die out of two pieces for swaging and/or crimping press. Download PDF

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Publication number
EP0620057A1
EP0620057A1 EP93402812A EP93402812A EP0620057A1 EP 0620057 A1 EP0620057 A1 EP 0620057A1 EP 93402812 A EP93402812 A EP 93402812A EP 93402812 A EP93402812 A EP 93402812A EP 0620057 A1 EP0620057 A1 EP 0620057A1
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EP
European Patent Office
Prior art keywords
dies
teeth
matrix
matrices
press
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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
EP93402812A
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German (de)
French (fr)
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EP0620057B1 (en
Inventor
Jean-Pierre Huet
Alain Courtois
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Dubuis SA
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Dubuis SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/058—Crimping mandrels

Definitions

  • the invention relates to a set of two dies intended to equip a press for shrinking and / or crimping a tubular part.
  • the nozzle is generally provided with peripheral bosses, which are thus anchored in the material of the pipe by tightening said outer ring.
  • tools can be used fitted with jaws which tighten radially on the ring.
  • a manual hydraulic press or not which comprises a head in which there are two facing dies, having a hollow recess, one being immobilized while the other, mounted mobile, is stressed by the hydraulic cylinder of the press.
  • the known dies can be of the circular or polygonal type (for example hexagonal), that is to say that the two dies closed one on the other form a cylindrical or polygonal tubular surface tightened with respect to the initial cylindrical shape of the ring.
  • the document DE-B-1096442 describes a set of two dies intended to equip a press for clamping a workpiece, the dies each having a hollow imprint which is extended laterally on each edge by a junction surface of the crenellated dies forming teeth and interstices in the transverse direction with respect to the axis of the impression so that said teeth are provided to overlap one another during the mutual translative approximation of the dies produced by the press until said dies constitute the desired closed interior surface for the shaped product.
  • This device is intended to tighten a sleeve around two cables and the imprint of each matrix is a part of polyhedron.
  • the inventors have imagined a set of two dies of this type for constricting and / or crimping a metallic tubular piece but which is remarkable in that the imprint of each matrix is a part of a circular cylinder while the dimensions of the imprint and teeth are such that the two completely nested dies form a substantially circular cylindrical interior surface.
  • the dimensions of the teeth of each matrix are identical while the central axis of the cylinder part or imprint of each matrix is determined by the intersection of the longitudinal plane of the matrix with the mid-tooth partitioning plane of said matrices so that the substantially circular cylindrical surface formed by the dies is obtained when the teeth of one die are nested to the bottom of the interstices of the other matrix. This ensures perfect calibration of the diameters to be shrunk or crimped, while limiting the crushing of the parts.
  • the two dies are identical to each other and are intended to be presented from the front, but turned one over the other, so that the teeth of one fit in the interstices of the other .
  • the teeth are slightly chamfered or rounded, as is the bottom of each gap on its inner edge.
  • the crenellated surfaces extend the hollow imprint in a substantially tangential manner.
  • the dies according to the invention are quite well adapted, but not exclusively, to equip a hydraulic press of the aforementioned type and apply in particular to crimping by cold shrinking a ring as mentioned above, for fixing '' a nozzle or fitting in a pipe.
  • the head 1 can be opened for the placement of the dies, the die 2 'being here fixed while the die 2 is mobile and can be requested by the piston 3 (FIG. 2) of a hydraulic cylinder fitted the tool.
  • the two matrices 2 and 2 ' are identical and are shown in more detail under the reference 2 in FIGS. 5 to 7.
  • the matrix thus represented in FIGS. 5 to 7 includes a shank 4 for mounting in the head 1 and ribs 5a, 5b for guiding.
  • the matrix 2 has a hollow imprint 6 of circular cylindrical shape which extends on the edges of its opening by a crenellated surface 7a, 7b forming teeth as shown, directed in the transverse direction relative to the axis of the imprint 6.
  • the crenellated surfaces 7a, 7b therefore consist of a succession of teeth and interstices.
  • the teeth and the interstices have the same dimensions while each surface is delimited on one side by a tooth, for example 8a, 8b ( Figures 6 and 7) and on the other side by a recess 8'a, 8 'b corresponding to the size of a gap ( Figures 5 to 7).
  • the surfaces 7a, 7b extend the impression 6 substantially tangentially and it can also be seen that the teeth have a slight chamfer.
  • the cavities 6 and 6 ′ thus connected after junction of the crenellated surfaces of each matrix constitute a surface of generally circular cylindrical shape, the teeth of one of the matrices coming into abutment at the end of travel bottom of the interstices of the other matrix.
  • the axis 11 of the cylindrical part is in the plane 9 (FIG. 5) for each matrix, the planes containing the internal faces of the teeth of a matrix intersect with the corresponding planes of the other matrix at the junction generators, forming very open dihedral angles.
  • the rounded parts, denoted R, of the interstices promote shrinking without tearing of material from the part to be shaped, without causing incipient fracture or corrosion, and further facilitate dislocation during the separation of the dies.
  • FIGS. 3 and 4 show a pipe 12 in which we want to crimp a nozzle or fitting 13 provided with a loose nut 14.
  • the connector 13 has bosses to enter lightly into the pipe 12.
  • crenellated surfaces of the matrices which thus overlap promote a substantially uniform constriction of the ring 15, the bosses of the connector 13 coming to anchor in the pipe 12.
  • the invention may have another shape.
  • the invention also relates to a single matrix of such a game, especially when said matrices are identical as in the example described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The system comprises two matrices (2, 2') with recessed surfaces (6, 6'), linked together by crenellated edges formed by interlocking teeth which allow the matrices to be brought together, e.g. by hydraulic pressure, closing the space between them. The two matrices are identical in shape and fitted by reversing one relative to the other so that the teeth interlock. Each matrix recess is in the shape of a portion of a cylinder, so that a cylinder is formed when they are brought together, squeezing a component placed between them. The matrix teeth can have chamfered or slightly rounded edges for ease of engagement.

Description

L'invention concerne un jeu de deux matrices destinées à équiper une presse à rétreindre et/ou à sertir une pièce tubulaire.The invention relates to a set of two dies intended to equip a press for shrinking and / or crimping a tubular part.

Il est connu de sertir un embout, ou raccord, disposé dans un tuyau au moyen d'une bague métallique extérieure qui est généralement rétreinte à froid.It is known to crimp a nozzle, or fitting, placed in a pipe by means of an outer metal ring which is generally cold-shrunk.

L'embout est généralement pourvu de bosselages périphériques, qui viennent ainsi s'ancrer dans la matière constitutive du tuyau par serrage de ladite bague extérieure.The nozzle is generally provided with peripheral bosses, which are thus anchored in the material of the pipe by tightening said outer ring.

Pour rétreindre la bague, on peut utiliser des outils munis de mors qui viennent se resserrer radialement sur la bague.To shrink the ring, tools can be used fitted with jaws which tighten radially on the ring.

Toutefois, ce type d'outil est généralement assez encombrant et onéreux. En outre, la bague n'est pas rétreinte sur toute sa circonférence, elle est enfoncée par chaque mors.However, this type of tool is generally quite bulky and expensive. In addition, the ring is not shrunk over its entire circumference, it is pressed by each jaw.

Pour sertir, on peut aussi utiliser une presse hydraulique manuelle ou non, qui comporte une tête dans laquelle on dispose deux matrices en regard, ayant une rempreinte en creux, l'une étant immobilisée tandis que l'autre, montée mobile, est sollicitée par le vérin hydraulique de la presse.For crimping, it is also possible to use a manual hydraulic press or not, which comprises a head in which there are two facing dies, having a hollow recess, one being immobilized while the other, mounted mobile, is stressed by the hydraulic cylinder of the press.

On comprend qu'il suffit de disposer les pièces à sertir entre les deux matrices et actionner la presse jusqu'à obtenir un serrage suffisant.It is understood that it suffices to arrange the parts to be crimped between the two dies and actuate the press until sufficient tightening is obtained.

De cette façon, on peut sertir les embouts précités dans les tuyaux, mais aussi des douilles sur des câbles, etc.In this way, the aforementioned ends can be crimped into the pipes, but also sockets on cables, etc.

Pour cela, il suffit d'utiliser des matrices de formes convenables, les deux matrices n'ayant bien entendu pas nécessairement la même forme.For this, it suffices to use matrices of suitable shapes, the two matrices of course not necessarily having the same shape.

Toutefois, pour effectuer un sertissage au moyen d'une bague comme mentionné ci-avant, les matrices connues peuvent être du type circulaire ou polygonale (par exemple hexagonale), c'est-à-dire que les deux matrices refermées l'une sur l'autre forment une surface tubulaire cylindrique ou polygonale resserrée par rapport à la forme cylindrique initiale de la bague.However, to perform a crimping by means of a ring as mentioned above, the known dies can be of the circular or polygonal type (for example hexagonal), that is to say that the two dies closed one on the other form a cylindrical or polygonal tubular surface tightened with respect to the initial cylindrical shape of the ring.

On comprend toutefois que les deux matrices se resserrent l'une vers l'autre et qu'inévitablement, à l'endroit qui devrait constituer une surface de jonction pour les matrices, une partie de la matière de la bague est pincée.It is understood however that the two matrices tighten towards each other and that inevitably, at the place which should constitute a junction surface for the dies, part of the material of the ring is pinched.

Si les matrices hexagonales donnent d'assez bons résultats, il est clair que la bague est marquée et n'est pas en outre rétreinte uniformément.If the hexagonal dies give fairly good results, it is clear that the ring is marked and is not moreover uniformly shrunk.

Avec des matrices dont les empreintes sont cylindriques circulaires (avec un diamètre bien sûr inférieur au diamètre de la bague), le pincement peut être très important.With dies whose impressions are circular cylindrical (with a diameter of course less than the diameter of the ring), the pinching can be very important.

Le document DE-B-1096442 décrit un jeu de deux matrices destinées à équiper une presse à serrer une pièce, les matrices présentant chacune une empreinte en creux qui se prolonge latéralement sur chaque bord par une surface de jonction des matrices crénelée formant des dents et des interstices dans le sens transversal par rapport à l'axe de l'empreinte de telle sorte que lesdites dents sont prévues pour s'imbriquer les unes dans les autres lors du rapprochement translatif mutuel des matrices réalisé par la presse jusqu'à ce que lesdites matrices constituent la surface intérieure fermée voulue pour le produit façonné. Ce dispositif est prévu pour serrer un manchon autour de deux câbles et l'empreinte de chaque matrice est une partie de polyèdre.The document DE-B-1096442 describes a set of two dies intended to equip a press for clamping a workpiece, the dies each having a hollow imprint which is extended laterally on each edge by a junction surface of the crenellated dies forming teeth and interstices in the transverse direction with respect to the axis of the impression so that said teeth are provided to overlap one another during the mutual translative approximation of the dies produced by the press until said dies constitute the desired closed interior surface for the shaped product. This device is intended to tighten a sleeve around two cables and the imprint of each matrix is a part of polyhedron.

Les inventeurs on imaginé un jeu de deux matrices de ce type pour rétreindre et/ou sertir une pièce tubulaire métallique mais qui est remarquable en ce que l'empreinte de chaque matrice est une partie de cylindre circulaire tandis que les dimensions de l'empreinte et des dents sont telles que les deux matrices complètement imbriquées forment une surface intérieure sensiblement cylindrique circulaire.The inventors have imagined a set of two dies of this type for constricting and / or crimping a metallic tubular piece but which is remarkable in that the imprint of each matrix is a part of a circular cylinder while the dimensions of the imprint and teeth are such that the two completely nested dies form a substantially circular cylindrical interior surface.

De la sorte, on minimise le phénomène de pincement, qui n'est d'ailleurs pas le problème à résoudre dans le document Allemand précité dans lequel d'ailleurs les dents d'une matrice ne s'imbriquent pas jusqu'au fond des interstices de l'autre.In this way, the pinching phenomenon is minimized, which is not the problem to be solved in the aforementioned German document in which, moreover, the teeth of a matrix do not overlap to the bottom of the interstices. the other.

Avantageusement, les dimensions des dents de chaque matrice sont identiques tandis que l'axe central de la partie de cylindre ou empreinte de chaque matrice est déterminé par l'intersection du plan longitudinal de la matrice avec le plan de partage à mi-dents desdites matrices de telle sorte que la surface sensiblement cylindrique circulaire formée par les matrices est obtenue lorsque les dents d'une matrice sont imbriquées jusqu'au fond des interstices de l'autre matrice. On assure ainsi un parfait calibrage des diamètres à rétreindre ou sertir, tout en limitant l'écrasement des pièces.Advantageously, the dimensions of the teeth of each matrix are identical while the central axis of the cylinder part or imprint of each matrix is determined by the intersection of the longitudinal plane of the matrix with the mid-tooth partitioning plane of said matrices so that the substantially circular cylindrical surface formed by the dies is obtained when the teeth of one die are nested to the bottom of the interstices of the other matrix. This ensures perfect calibration of the diameters to be shrunk or crimped, while limiting the crushing of the parts.

De préférence, les deux matrices sont identiques entre elles et sont destinées à se présenter de face, mais retournées l'une par rapport à l'autre, de manière que les dents de l'une s'ajustent dans les interstices de l'autre.Preferably, the two dies are identical to each other and are intended to be presented from the front, but turned one over the other, so that the teeth of one fit in the interstices of the other .

Avantageusement, les dents sont légèrement chanfreinées ou arrondies de même que le fond de chaque interstice sur son bord intérieur.Advantageously, the teeth are slightly chamfered or rounded, as is the bottom of each gap on its inner edge.

Selon un mode de réalisation, les surfaces crénelées prolongent l'empreinte en creux de façon sensiblement tangentielle.According to one embodiment, the crenellated surfaces extend the hollow imprint in a substantially tangential manner.

Les matrices selon l'invention sont tout à fait bien adaptées, mais non exclusivement, à équiper une presse hydraulique de type précité et s'appliquent notamment au sertissage par rétreint à froid d'une bague comme mentionné ci-avant, pour la fixation d'un embout ou raccord dans un tuyau.The dies according to the invention are quite well adapted, but not exclusively, to equip a hydraulic press of the aforementioned type and apply in particular to crimping by cold shrinking a ring as mentioned above, for fixing '' a nozzle or fitting in a pipe.

L'invention sera bien comprise à la lecture de la description qui va suivre et qui se réfère aux dessins annexés dans lesquels:

  • la figure 1 montre une presse hydraulique manuelle pourvue de deux matrices selon l'invention prêtes au serrage,
  • la figure 2 montre la tête de la presse de la figure 1 après rapprochement des matrices par l'action du vérin hydraulique,
  • la figure 3 montre les pièces avant assemblage prévues pour le sertissage d'un raccord dans un tuyau,
  • la figure 4 montre les pièces de la figure 3 assemblées,
  • les figures 5, 6 et 7 montrent une matrice selon l'invention respectivement en élévation vue dans la direction de l'axe longitudinal de l'empreinte, en vue de dessus et en élévation transversale.
The invention will be clearly understood on reading the description which follows and which refers to the appended drawings in which:
  • FIG. 1 shows a manual hydraulic press provided with two dies according to the invention ready for tightening,
  • FIG. 2 shows the head of the press of FIG. 1 after the dies have been brought together by the action of the hydraulic cylinder,
  • FIG. 3 shows the parts before assembly provided for crimping a fitting in a pipe,
  • FIG. 4 shows the parts of FIG. 3 assembled,
  • Figures 5, 6 and 7 show a matrix according to the invention respectively in elevation seen in the direction of the longitudinal axis of the imprint, in top view and in transverse elevation.

Sur la figure 1, on peut voir un outil constituant une presse hydraulique manuelle et qui est muni d'une tête 1 dans laquelle sont montées deux matrices 2 et 2'.In Figure 1, we can see a tool constituting a press hydraulic manual and which is provided with a head 1 in which are mounted two dies 2 and 2 '.

On comprend que la tête 1 peut s'ouvrir pour la mise en place des matrices, la matrice 2' étant ici fixe tandis que la matrice 2 est mobile et peut être sollicitée par le piston 3 (figure 2) d'un vérin hydraulique équipant l'outil.It is understood that the head 1 can be opened for the placement of the dies, the die 2 'being here fixed while the die 2 is mobile and can be requested by the piston 3 (FIG. 2) of a hydraulic cylinder fitted the tool.

Les deux matrices 2 et 2' sont identiques et sont représentées plus en détail sous la référence 2 sur les figures 5 à 7.The two matrices 2 and 2 'are identical and are shown in more detail under the reference 2 in FIGS. 5 to 7.

La matrice ainsi représentée sur les figures 5 à 7 comporte une queue 4 pour le montage dans la tête 1 et des nervures 5a, 5b de guidage.The matrix thus represented in FIGS. 5 to 7 includes a shank 4 for mounting in the head 1 and ribs 5a, 5b for guiding.

La matrice 2 présente une empreinte en creux 6 de forme cylindrique circulaire qui se prolonge sur les bords de son ouverture par une surface crénelée 7a, 7b formant des dents comme représentées, dirigées dans le sens transversal par rapport à l'axe de l'empreinte 6. Comme le montre plus particulièrement la figure 7, les surfaces crénelées 7a, 7b sont donc constituées par une succession de dents et d'interstices. Avantageusement, les dents et les interstices présentent les mêmes dimensions tandis que chaque surface est délimitée d'un côté par une dent, par exemple 8a, 8b (figures 6 et 7) et de l'autre côté par un évidement 8'a, 8'b correspondant à la taille d'un interstice (figures 5 à 7).The matrix 2 has a hollow imprint 6 of circular cylindrical shape which extends on the edges of its opening by a crenellated surface 7a, 7b forming teeth as shown, directed in the transverse direction relative to the axis of the imprint 6. As shown more particularly in FIG. 7, the crenellated surfaces 7a, 7b therefore consist of a succession of teeth and interstices. Advantageously, the teeth and the interstices have the same dimensions while each surface is delimited on one side by a tooth, for example 8a, 8b (Figures 6 and 7) and on the other side by a recess 8'a, 8 'b corresponding to the size of a gap (Figures 5 to 7).

Comme le montre la figure 5, les surfaces 7a, 7b prolongent l'empreinte 6 de façon sensiblement tangentielle et l'on peut constater aussi que les dents présentent un léger chanfrein.As shown in Figure 5, the surfaces 7a, 7b extend the impression 6 substantially tangentially and it can also be seen that the teeth have a slight chamfer.

On peut également constater, toujours sur la figure 5, que les fonds des interstices sont légèrement arrondis, comme l'indiquent les références R, du côté intérieur, c'est-à-dire du côté de la jonction avec la surface de l'empreinte.It can also be seen, still in FIG. 5, that the bottoms of the interstices are slightly rounded, as indicated by the references R, on the inner side, that is to say on the side of the junction with the surface of the footprint.

En outre, si le plan 9 des figures 5 et 7 représente le plan de partage à mi-dents des surfaces 7a, 7b, l'intersection de ce plan avec le plan longitudinal 10 détermine l'axe 11 (figure 5) de la partie cylindrique ou empreinte 6.In addition, if the plane 9 of FIGS. 5 and 7 represents the half-tooth sharing plane of the surfaces 7a, 7b, the intersection of this plane with the longitudinal plane 10 determines the axis 11 (FIG. 5) of the part cylindrical or imprint 6.

Sur la figure 1, on peut voir les axes 11, 11' respectivement des empreintes cylindriques 6, 6' des matrices 2 et 2'.In Figure 1, we can see the axes 11, 11 'respectively of the cylindrical impressions 6, 6' of the dies 2 and 2 '.

Sur la figure 1 encore, on comprend que les matrices 2 et 2' sont retournées l'une par rapport à l'autre de telle sorte que les dents de l'une s'imbriquent dans les interstices de l'autre lorsque l'outil est actionné et que les matrices se rapprochent l'une vers l'autre par un mouvement translatif.Again in FIG. 1, it can be understood that the dies 2 and 2 ′ are turned over with respect to each other so that the teeth of one nest in the interstices of the other when the tool is activated and the dies move towards each other by a translational movement.

On peut ainsi obtenir la position de serrage représentée sur la figure 2, position dans laquelle les axes 11 et 11' sont confondus.We can thus obtain the clamping position shown in Figure 2, position in which the axes 11 and 11 'are coincident.

Comme le montre bien cette figure 2, les empreintes 6 et 6' ainsi raccordées après jonction des surfaces crénelées de chaque matrice, constituent une surface de forme générale cylindrique circulaire, les dents de l'une des matrices venant en butée de fin de course au fond des interstices de l'autre matrice. Toutefois, du fait du départ sensiblement tangentiel des surfaces crénelées des matrices et du fait que l'axe 11 de la partie cylindrique soit dans le plan 9 (figure 5) pour chaque matrice, les plans contenant les faces intérieures des dents d'une matrice se coupent avec les plans correspondants de l'autre matrice au niveau des génératrices de jonction en formant des angles dièdres très ouverts.As this FIG. 2 clearly shows, the cavities 6 and 6 ′ thus connected after junction of the crenellated surfaces of each matrix, constitute a surface of generally circular cylindrical shape, the teeth of one of the matrices coming into abutment at the end of travel bottom of the interstices of the other matrix. However, due to the substantially tangential departure of the crenellated surfaces of the matrices and the fact that the axis 11 of the cylindrical part is in the plane 9 (FIG. 5) for each matrix, the planes containing the internal faces of the teeth of a matrix intersect with the corresponding planes of the other matrix at the junction generators, forming very open dihedral angles.

Les parties arrondies, notées R, des interstices favorisent quant à eux un rétreint sans arrachement de matière de la pièce à façonner, sans provoquer d'amorce de rupture ou de corrosion, et facilitent en outre le déboîtement lors de la séparation des matrices.The rounded parts, denoted R, of the interstices promote shrinking without tearing of material from the part to be shaped, without causing incipient fracture or corrosion, and further facilitate dislocation during the separation of the dies.

Les figures 3 et 4 montrent un tuyau 12 dans lequel on veut sertir un embout ou raccord 13 pourvu d'un écrou fou 14.FIGS. 3 and 4 show a pipe 12 in which we want to crimp a nozzle or fitting 13 provided with a loose nut 14.

Classiquement, le raccord 13 présente des bosselages pour entrer légèrement à force dans le tuyau 12.Conventionally, the connector 13 has bosses to enter lightly into the pipe 12.

Pour effectuer ce sertissage, on dispose une bague 15, d'un diamètre légèrement supérieur au tuyau 12, autour de ce dernier, après mise en place de l'embout 13 et de son écrou 14 (figure 4).To perform this crimping, there is a ring 15, of a diameter slightly greater than the pipe 12, around the latter, after fitting the end piece 13 and its nut 14 (FIG. 4).

Il suffit alors d'utiliser un outil du type de celui de la figure 1 avec des matrices d'un diamètre légèrement inférieur à celui de la bague 15 pour rétreindre celle-ci.It then suffices to use a tool of the type of that of FIG. 1 with dies of a diameter slightly smaller than that of the ring 15 to constrict the latter.

On comprend bien que les surfaces crénelées des matrices qui s'imbriquent ainsi favorisent un rétreint sensiblement uniforme de la bague 15, les bosselages du raccord 13 venant s'ancrer dans le tuyau 12.It will be understood that the crenellated surfaces of the matrices which thus overlap promote a substantially uniform constriction of the ring 15, the bosses of the connector 13 coming to anchor in the pipe 12.

Toutefois, cette application est évidemment donnée à titre d'exemple. On peut en effet rétreindre toute bague sur tout autre élément, voire rétreindre directement un élément tubulaire.However, this application is obviously given by way of example. We can indeed shrink any ring on any other element, or even directly shrink a tubular element.

En outre, si l'invention est plus particulièrement destinée à rétreindre une pièce circulaire, celle-ci peut présenter une autre forme.In addition, if the invention is more particularly intended to shrink a circular part, it may have another shape.

Enfin, il est clair aussi que si les deux matrices sont prévues et aménagées pour coopérer entre elles, l'invention concerne aussi une seule matrice d'un tel jeu, surtout lorsque lesdites matrices sont identiques comme dans l'exemple décrit.Finally, it is also clear that if the two matrices are provided and arranged to cooperate with each other, the invention also relates to a single matrix of such a game, especially when said matrices are identical as in the example described.

Claims (8)

1) Jeu de deux matrices destinées à équiper une presse à rétreindre et/ou à sertir une pièce tubulaire métallique, les matrices (2,2') présentant chacune une empreinte en creux (6,6') qui se prolonge latéralement sur chaque bord par une surface de jonction des matrices crénelée (7a,7b) formant des dents et des interstices dans le sens transversal par rapport à l'axe (11,11') de l'empreinte de telle sorte que lesdites dents sont prévues pour s'imbriquer les unes dans les autres lors du rapprochement translatif mutuel des matrices (2,2') réalisé par la presse jusqu'à ce que lesdites matrices constituent la surface intérieure fermée voulue pour le produit façonné, caractérisé en ce que l'empreinte (6,6') de chaque matrice (2,2') est une partie de cylindre circulaire tandis que les dimensions de l'empreinte et des dents sont telles que les deux matrices complètement imbriquées forment une surface intérieure sensiblement cylindrique circulaire. 1) Set of two dies intended to equip a press for shrinking and / or crimping a metallic tubular piece, the dies (2,2 ') each having a recess (6,6') which extends laterally on each edge by a junction surface of the crenellated matrices (7a, 7b) forming teeth and interstices in the transverse direction relative to the axis (11,11 ') of the impression so that said teeth are provided for s' nest into each other during the mutual translative approximation of the dies (2,2 ') produced by the press until said dies constitute the desired closed interior surface for the shaped product, characterized in that the imprint (6 , 6 ') of each matrix (2,2') is a part of a circular cylinder while the dimensions of the cavity and the teeth are such that the two completely nested matrices form a substantially circular internal cylindrical surface. 2) Jeu de deux matrices selon la revendication 1, caractérisé en ce que les dimensions des dents de chaque matrice sont identiques tandis que l'axe central (11,11') de la partie de cylindre ou empreinte (6,6') de chaque matrice est déterminé par l'intersection du plan longitudinal (10) de la matrice avec le plan (9) de partage à mi-dents desdites matrices de telle sorte que la surface sensiblement cylindrique circulaire formée par les matrices est obtenue lorsque les dents d'une matrice sont imbriquées jusqu'au fond des interstices de l'autre matrice. 2) Set of two dies according to claim 1, characterized in that the dimensions of the teeth of each die are identical while the central axis (11,11 ') of the cylinder part or cavity (6,6') of each matrix is determined by the intersection of the longitudinal plane (10) of the matrix with the half-tooth sharing plane (9) of said matrices so that the substantially circular cylindrical surface formed by the matrices is obtained when the teeth d 'a matrix are nested to the bottom of the interstices of the other matrix. 3) Jeu de deux matrices selon l'une des revendications 1 et 2, caractérisé en ce que les deux matrices (2,2') sont identiques entre elles et sont destinées à se présenter de face, mais retournées l'une par rapport à l'autre, de manière que les dents de l'une s'ajustent dans les interstices de l'autre. 3) Set of two dies according to one of claims 1 and 2, characterized in that the two dies (2,2 ') are identical to each other and are intended to be presented from the front, but turned one with respect to the other, so that the teeth of one fit into the interstices of the other. 4) Jeu de deux matrices selon l'une des revendications 1 à 3, caractérisé en ce que les dents sont légèrement chanfreinées ou arrondies. 4) Set of two dies according to one of claims 1 to 3, characterized in that the teeth are slightly chamfered or rounded. 5) Jeu de deux matrices selon l'une des revendications 1 à 4, caractérisé en ce que le fond de chaque interstice est légèrement chanfreiné ou arrondi (R) sur son bord intérieur. 5) Set of two dies according to one of claims 1 to 4, characterized in that the bottom of each gap is slightly chamfered or rounded (R) on its inner edge. 6) Jeu de deux matrices selon l'une des revendications 1 à 5, caractérisé en ce que les surfaces crénelées (7a,7b) prolongent l'empreinte en creux (6) de façon sensiblement tangentielle. 6) Set of two dies according to one of claims 1 to 5, characterized in that the crenellated surfaces (7a, 7b) extend the indentation (6) substantially tangentially. 7) Jeu de deux matrices selon l'une des revendications 1 à 6, caractérisé en ce qu'elles sont destinées à équiper une presse hydraulique manuelle munie d'une tête (1) dans laquelle est immobilisée l'une (2') des matrices tandis que l'autre (2), montée mobile, est sollicitée par le vérin hydraulique de ladite presse. 7) Set of two dies according to one of claims 1 to 6, characterized in that they are intended to equip a manual hydraulic press provided with a head (1) in which is immobilized one (2 ') of dies while the other (2), movable mounted, is biased by the hydraulic cylinder of said press. 8) Jeu de deux matrices selon l'une des revendications 1 à 7, caractérisé en ce qu'elles sont destinées à effectuer un sertissage par rétreint à froid d'une bague cylindrique (15) sur un tuyau (12) dans lequel est disposé un raccord ou embout (13) muni de bosselages périphériques. 8) Set of two dies according to one of claims 1 to 7, characterized in that they are intended to effect crimping by cold-shrinking a cylindrical ring (15) on a pipe (12) in which is disposed a fitting or end piece (13) provided with peripheral bosses.
EP19930402812 1992-11-19 1993-11-19 Die out of two pieces for swaging and/or crimping press. Expired - Lifetime EP0620057B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9213887 1992-11-19
FR9213887A FR2698026B1 (en) 1992-11-19 1992-11-19 Set of two dies intended to equip a press for shrinking and / or crimping.

Publications (2)

Publication Number Publication Date
EP0620057A1 true EP0620057A1 (en) 1994-10-19
EP0620057B1 EP0620057B1 (en) 1999-09-22

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EP19930402812 Expired - Lifetime EP0620057B1 (en) 1992-11-19 1993-11-19 Die out of two pieces for swaging and/or crimping press.

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EP (1) EP0620057B1 (en)
DE (1) DE69326538T2 (en)
FR (1) FR2698026B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731267A2 (en) * 2005-06-10 2006-12-13 M. Dubuis et Compagnie Die set for a crimping tool
CN112936891A (en) * 2018-01-09 2021-06-11 里奇工具公司 System and method for axially aligning a mold
US11394165B2 (en) * 2017-06-29 2022-07-19 Hubbell Incorporated Repositionable tool die

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000545A1 (en) * 2010-02-25 2011-08-25 Joiner's Bench GmbH, 42859 Hydraulic pressing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096442B (en) * 1958-02-11 1961-01-05 Bayerische Schrauben Und Feder Method and device for connecting two adjacent electrical conductors by means of a sleeve with an oval cross-section and this sleeve itself
GB987726A (en) * 1963-04-09 1965-03-31 Hayden Nilos Ltd Device for performing a swaging operation
GB2127509A (en) * 1982-09-23 1984-04-11 David John Picton Pipe coupling
EP0302039A2 (en) * 1987-07-29 1989-02-01 Weidmüller Interface GmbH & Co. Crimping mandrel
US4947672A (en) * 1989-04-03 1990-08-14 Burndy Corporation Hydraulic compression tool having an improved relief and release valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096442B (en) * 1958-02-11 1961-01-05 Bayerische Schrauben Und Feder Method and device for connecting two adjacent electrical conductors by means of a sleeve with an oval cross-section and this sleeve itself
GB987726A (en) * 1963-04-09 1965-03-31 Hayden Nilos Ltd Device for performing a swaging operation
GB2127509A (en) * 1982-09-23 1984-04-11 David John Picton Pipe coupling
EP0302039A2 (en) * 1987-07-29 1989-02-01 Weidmüller Interface GmbH & Co. Crimping mandrel
US4947672A (en) * 1989-04-03 1990-08-14 Burndy Corporation Hydraulic compression tool having an improved relief and release valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731267A2 (en) * 2005-06-10 2006-12-13 M. Dubuis et Compagnie Die set for a crimping tool
FR2886874A1 (en) * 2005-06-10 2006-12-15 Dubuis Et Cie Sa M TWO MATRIX SETS TO EQUIP A PRESS TO RETURN AND / OR CRIMP
EP1731267A3 (en) * 2005-06-10 2008-07-30 M. Dubuis et Compagnie Die set for a crimping tool
US11394165B2 (en) * 2017-06-29 2022-07-19 Hubbell Incorporated Repositionable tool die
CN112936891A (en) * 2018-01-09 2021-06-11 里奇工具公司 System and method for axially aligning a mold

Also Published As

Publication number Publication date
FR2698026B1 (en) 1994-12-30
EP0620057B1 (en) 1999-09-22
FR2698026A1 (en) 1994-05-20
DE69326538D1 (en) 1999-10-28
DE69326538T2 (en) 2000-01-05

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