EP1122031A1 - Clamping tool and especially crimping tool - Google Patents

Clamping tool and especially crimping tool Download PDF

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Publication number
EP1122031A1
EP1122031A1 EP01400210A EP01400210A EP1122031A1 EP 1122031 A1 EP1122031 A1 EP 1122031A1 EP 01400210 A EP01400210 A EP 01400210A EP 01400210 A EP01400210 A EP 01400210A EP 1122031 A1 EP1122031 A1 EP 1122031A1
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EP
European Patent Office
Prior art keywords
links
jaw
actuation
translational
jaws
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.)
Withdrawn
Application number
EP01400210A
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German (de)
French (fr)
Inventor
Patrick Vervier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M Dubuis et Cie
Dubuis et Cie SAS
Original Assignee
M Dubuis et Cie
Dubuis et Cie SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by M Dubuis et Cie, Dubuis et Cie SAS filed Critical M Dubuis et Cie
Publication of EP1122031A1 publication Critical patent/EP1122031A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive

Definitions

  • the invention relates to a clamping tool and more particularly to a crimping.
  • the tool is thus provided with a clamp which is generally mounted so removable in order to adapt the suitable clamp according to the diameter of the fitting to crimp.
  • the jaws are actuated towards each other by the action of the piston of a jack fitted with two rollers which are moved in translation on inclined ramps arranged on the jaws so as to separate said ramps and bring together the jaws which pivot towards each other.
  • the piston first performs an idle stroke until the rollers reach the inclined ramps.
  • the tool Before therefore starting a crimp, the tool must operate for a some time without movement of the jaws.
  • the invention provides a tool which is in particular remarkable in that one of the jaws is pivotally movable relative to the other jaw which is connected to a fixed part of the actuation system, said movable jaw being connected by means of translational actuation by a link articulation partly secured to a lever forming a handle which is arranged so as to allow the movable jaw to be pivoted in one direction or in the other in two extreme positions, respectively opening and closing partial, by modifying the relative geometry of the articulation rods, while that the translational drive means can act on said rods to rotate the movable jaw, either in the direction of clamping the jaws after actuation from the handle to its extreme partially closed position, either in reverse loosening before actuating said handle to its open position.
  • the articulation connecting the movable jaw to the translative actuating means comprises at least two pivoting links between them by one of their ends whose other ends are pivotally mounted respectively on the movable jaw and on said translational drive means, while the handle is integral with the link (s) pivotally mounted on the translative drive means and at least one stop and at least one means conjugate are provided on the rods to cooperate in order to limit deformation geometric of said links by the handle in the extreme closed position partial jaws, so that the rods are locked and rigidly linked to each other during the pushing actuation of the translational drive means to ensure the clamping of the jaws.
  • the stop for limiting the geometric deformation rods is arranged so as to retain at least one of the rods when the latter, actuated by the handle, have taken a position such that the axis of common pivoting of the two rods is passed from one side to the other of the line geometric formed by the pivot axes of the other two ends of the rods.
  • the limiting stop is arranged so that in the position locking rods, after actuation of the handle, but before actuation the translational drive means, the common pivot axis of the rods and the pivot axis of the link with the drive means determine a line substantially parallel to the direction of the translational movement of said drive means.
  • the articulation connecting the movable jaw to the translative actuation means comprises an individual link articulated on said translational actuating means and a pair of links articulated on said jaw mobile and on the individual link which they enclose by their corresponding ends, the stop for limiting the movement of the rods being formed by a spindle, while the combined means intended to cooperate with said stop is a shoulder, or a notch fitted on the individual link.
  • the jaw connected to the fixed part of the actuation system comprises the pivot axis of the movable jaw, said axis being arranged in the contact plane of said jaws.
  • the jaw connected to the fixed part of the actuation system is rotatably mounted on said fixed part and preferably, said jaw is positioned so as to present its clamping plane substantially perpendicular to the direction of movement of the translational drive means .
  • the actuation system comprises for example a cylinder, the drive means translative being produced by the end of the cylinder rod and / or a part attached to it.
  • each jaw has a housing intended to receive a crimping die.
  • the invention relates to any type of clamping tool also including in general, the tools for cutting in shear.
  • a tool according to the invention here in the form of a tool crimping tool intended to crimp for example a fitting 1 on a pipe 2 ( Figures 1 and 3 to 5).
  • the invention can of course relate, as already said, to other types clamping tools.
  • the tool according to the invention comprises a jaw 3 provided with a part of clamping 3a and a fixing part 3b on which is mounted a movable jaw 4 formed by a clamping part 4a and a shank 4b, which can pivot around a pivot axis 5 integral with the fixing part 3b of the jaw 3, said axis 5 being arranged here substantially in the contact plane of the clamping parts of the two jaws.
  • the fixing part 3b of the jaw 3 is fixed on a drive system, here in the form of a hydraulic cylinder 6 partially shown in the drawings, and which comprises a cylinder 6a, a sliding piston 6b provided with an extension or rod 6c, itself provided at its end with a head 7 (FIGS. 2 to 5), the assembly formed of the piston 6b, the rod 6c, the head 7 or to simplify, the latter alone, forming a translational drive means.
  • a drive system here in the form of a hydraulic cylinder 6 partially shown in the drawings, and which comprises a cylinder 6a, a sliding piston 6b provided with an extension or rod 6c, itself provided at its end with a head 7 (FIGS. 2 to 5), the assembly formed of the piston 6b, the rod 6c, the head 7 or to simplify, the latter alone, forming a translational drive means.
  • the actuation of the jack is ensured by any means such as an electric pump, for example.
  • the fixed part 3b of the jaw 3 is fixed on the cylinder 6a, advantageously in a rotating manner to allow adjustment in position.
  • the clamping part 3a of the jaw 3 has a clamping plane so arranged substantially perpendicular to the direction of movement of the head 7, that is to say of the translational drive means.
  • the head 7 of the actuation system is connected to the tail 4b of the jaw 4 by an articulation 8 with links.
  • the articulation 8 here presents an individual link 8a and a pair of links 8b, 8'b of which only one link for the pair 8b, 8'b is visible in Figures 1 and 3 to 5 (only Figure 2 shows the three links).
  • the links 8a; 8b, 8'b can move at least partly in the part 3b of jaw 3 which has a U-shape at this point, as shown well figure 2.
  • One end of the individual link 8a is articulated at the ends corresponding to the pair of links 8b, 8'b around a common axis 9.
  • the other ends of the links 8a and 8b, 8'b are pivotally mounted respectively on the head 7 of the actuation system around an axis 10 and on the tail 4b of the movable jaw 4 around an axis 11.
  • the link 8a is also secured to a lever forming a handle 12.
  • the links 8a and 8b, 8'b form a joint of the type knee brace whose geometry is modifiable by the action of the handle 12, so that an action of the latter in one direction or the other makes it possible to rotate the jaw movable 4, either towards the jaw 3 by bringing it closer, or on the contrary in direction reverse by removing it.
  • the rod 8a is provided with a shoulder or notch 13 while the pair of links 8b, 8'b is provided with a pin forming a stop 14 intended to cooperate with said notch 13, as will be explained below.
  • clamping parts 3a, 4a of the jaws 3 and 4 respectively are provided with housings, here semi-circular, intended to receive matrices of crimping 15, 16 removable to adapt to various diameters of fittings 1 to crimp on various pipes 2.
  • the tool looks as shown in Figures 1 to 3, that is to say that jaws 3 and 4 are open so that you can pass them around fitting 1 to be crimped.
  • the jaws 3 and 4 being positioned, as has just been said, we operate the handle 12 (in relation to the drawings, it is raised) so as to modify the geometry links 8a; 8b, 8'b, the common axis 9 of said links describing a circle around the axis 10 until the notch 13 of the link 8a comes into contact with the stop 14 as shown in FIG. 4. During this action, the movable jaw 4 pivots towards the jaw 3 which is fixed relative to said jaw 4.
  • the line connecting the pivot axes 9 and 10 is substantially coaxial with the axis of the cylinder 6, or more generally, parallel to the direction of the translational movement of the head 7.
  • the clamping pressure is such that the handle 12 cannot be actuated and the pressure of cylinder 6 must first be released to return to the position of figure 4.
  • the handle 12 makes it possible to constitute not only a means of operation and closure but also an ergonomic means of support and guidance particularly even more practical by the rotary mounting of the jaw 3 on the system actuation, as specified above.

Abstract

The locking connector press for pipes has two jaws (3,4) at least one of which is movable with respect to the other (3), which is fixed to the actuator (6). The movable jaw is connected to a hydraulic piston (7) by a linkage (8). The linkage has a handle lever (12) connected to it to pivot the movable jaw between open and closed positions. The slide biases the jaw closed after its closing movement and biases it open after opening.

Description

L'invention concerne un outil de serrage et plus particulièrement un outil de sertissage.The invention relates to a clamping tool and more particularly to a crimping.

On connaít déjà des outils de sertissage pour raccord de tuyau, qui comportent deux mâchoires articulées chacune sur un axe solidaire d'une même pièce support.We already know crimping tools for pipe connection, which include two jaws each articulated on an axis integral with the same support piece.

L'outil est ainsi pourvu d'une pince qui est généralement montée de manière amovible afin de pouvoir adapter la pince convenable selon le diamètre du raccord à sertir.The tool is thus provided with a clamp which is generally mounted so removable in order to adapt the suitable clamp according to the diameter of the fitting to crimp.

Afin de faciliter et simplifier l'adaptation aux divers diamètres de raccords, on a déjà imaginé d'utiliser des pièces ou matrices que l'on dispose de manière amovible dans les mâchoires de l'outil comme par exemple décrit dans le document EP 0 826 441, de telle sorte qu'il n'est plus nécessaire de changer les mâchoires elles-mêmes pour chaque diamètre.In order to facilitate and simplify the adaptation to the various diameters of fittings, we has already imagined using parts or dies that are removably available in the jaws of the tool as for example described in the document EP 0 826 441, so that it is no longer necessary to change the jaws themselves for each diameter.

Dans ces outils connus, les mâchoires sont actionnées l'une vers l'autre par l'action du piston d'un vérin muni de deux galets qui sont mus en translation sur des rampes inclinées aménagées sur les mâchoires de manière à écarter lesdites rampes et rapprocher les mâchoires qui pivotent l'une vers l'autre.In these known tools, the jaws are actuated towards each other by the action of the piston of a jack fitted with two rollers which are moved in translation on inclined ramps arranged on the jaws so as to separate said ramps and bring together the jaws which pivot towards each other.

On comprend que la translation du piston permet la fermeture angulaire des deux mâchoires, lesquelles sont déjà sollicitées l'une vers l'autre par un moyen élastique.It is understood that the translation of the piston allows the angular closure of the two jaws, which are already biased towards each other by elastic means.

Pour permettre d'ouvrir les mâchoires, il y a donc lieu de faire reculer le piston du vérin par tout moyen mécanique ou électrique de manière à dégager le dièdre formé par les rampes inclinées.To open the jaws, it is therefore necessary to move the piston back of the actuator by any mechanical or electrical means so as to release the dihedral formed by inclined ramps.

Toutefois avant toute utilisation de l'outil, il faut encore agir à la main sur les extrémités des rampes pour ouvrir les mâchoires à l'encontre de l'effet du moyen élastique qui sollicite lesdites mâchoires l'une vers l'autre. C'est ainsi que l'on peut alors passer les mâchoires autour du raccord à sertir.However, before using the tool, you must still act by hand on the ends of the ramps to open the jaws against the effect of the elastic means which biases said jaws towards each other. This is how we can then pass the jaws around the press fitting.

On comprend que pour passer de la position initiale reculée vers la position d'actionnement des mâchoires, le piston effectue d'abord une course à vide jusqu'à ce que les galets atteignent les rampes inclinées.We understand that to move from the initial position back to the position actuation of the jaws, the piston first performs an idle stroke until the rollers reach the inclined ramps.

Avant donc de commencer un sertissage, l'outil doit fonctionner pendant un certain temps sans mouvement des mâchoires.Before therefore starting a crimp, the tool must operate for a some time without movement of the jaws.

Pour les outils munis d'une batterie, c'est évidemment un inconvénient majeur puisque le nombre de sertissages réalisables pour une charge de batterie donnée est alors notablement réduit. For tools with a battery, this is obviously a major drawback since the number of crimps achievable for a given battery charge is then significantly reduced.

Afin en particulier de permettre une mise en place rapide et pratique de l'outil de serrage comportant deux mâchoires mues par un système d'actionnement muni d'un moyen d'entraínement translatif, l'invention propose un outil qui est notamment remarquable en ce que l'une des mâchoires est montée mobile de manière pivotante par rapport à l'autre mâchoire qui est reliée à une partie fixe du système d'actionnement, ladite mâchoire mobile étant reliée au moyen d'actionnement translatif par une articulation à biellettes en partie solidaire d'un levier formant une poignée qui est aménagée de manière à permettre de faire pivoter la mâchoire mobile dans un sens ou dans l'autre selon deux positions extrêmes, respectivement d'ouverture et de fermeture partielle, en modifiant la géométrie relative des biellettes de l'articulation, tandis que le moyen d'entraínement translatif peut agir sur lesdites biellettes pour faire pivoter la mâchoire mobile, soit dans le sens du serrage des mâchoires après l'actionnement de la poignée jusqu'à sa position extrême de fermeture partielle, soit en sens inverse de desserrage avant l'actionnement de ladite poignée vers sa position d'ouverture.In particular to allow a quick and practical installation of the tool clamp comprising two jaws driven by an actuation system provided of a translational drive means, the invention provides a tool which is in particular remarkable in that one of the jaws is pivotally movable relative to the other jaw which is connected to a fixed part of the actuation system, said movable jaw being connected by means of translational actuation by a link articulation partly secured to a lever forming a handle which is arranged so as to allow the movable jaw to be pivoted in one direction or in the other in two extreme positions, respectively opening and closing partial, by modifying the relative geometry of the articulation rods, while that the translational drive means can act on said rods to rotate the movable jaw, either in the direction of clamping the jaws after actuation from the handle to its extreme partially closed position, either in reverse loosening before actuating said handle to its open position.

Selon un mode de réalisation, l'articulation reliant la mâchoire mobile au moyen d'actionnement translatif comporte au moins deux biellettes pivotantes entre elles par une de leurs extrémités dont les autres extrémités sont montées pivotantes respectivement sur la mâchoire mobile et sur ledit moyen d'entraínement translatif, tandis que la poignée est solidaire de la ou des biellettes montées pivotantes sur le moyen translatif d'entraínement et qu'au moins une butée et au moins un moyen conjugué sont prévus sur les biellettes pour coopérer en vue de limiter la déformation géométrique desdites biellettes par la poignée dans la position extrême de fermeture partielle des mâchoires, de telle sorte que les biellettes soient bloquées et rigidement liées l'une à l'autre lors l'actionnement en poussée du moyen d'entraínement translatif en vue d'assurer le serrage des mâchoires.According to one embodiment, the articulation connecting the movable jaw to the translative actuating means comprises at least two pivoting links between them by one of their ends whose other ends are pivotally mounted respectively on the movable jaw and on said translational drive means, while the handle is integral with the link (s) pivotally mounted on the translative drive means and at least one stop and at least one means conjugate are provided on the rods to cooperate in order to limit deformation geometric of said links by the handle in the extreme closed position partial jaws, so that the rods are locked and rigidly linked to each other during the pushing actuation of the translational drive means to ensure the clamping of the jaws.

En particulier dans ce cas, la butée de limitation de la déformation géométrique des biellettes est aménagée de manière à retenir au moins l'une des biellettes lorsque ces dernières, actionnées par la poignée, ont pris une position telle que l'axe de pivotement commun des deux biellettes est passé d'un côté à l'autre de la ligne géométrique formée par les axes de pivotement des deux autres extrémités des biellettes.In particular in this case, the stop for limiting the geometric deformation rods is arranged so as to retain at least one of the rods when the latter, actuated by the handle, have taken a position such that the axis of common pivoting of the two rods is passed from one side to the other of the line geometric formed by the pivot axes of the other two ends of the rods.

De préférence, la butée de limitation est aménagée pour que dans la position de blocage des biellettes, après l'actionnement de la poignée, mais avant l'actionnement du moyen d'entraínement translatif, l'axe de pivotement commun des biellettes et l'axe de pivotement de la biellette avec le moyen d'entraínement déterminent une ligne sensiblement parallèle à la direction du mouvement translatif dudit moyen d'entraínement.Preferably, the limiting stop is arranged so that in the position locking rods, after actuation of the handle, but before actuation the translational drive means, the common pivot axis of the rods and the pivot axis of the link with the drive means determine a line substantially parallel to the direction of the translational movement of said drive means.

Selon un mode de réalisation, l'articulation reliant la mâchoire mobile au moyen d'actionnement translatif comporte une biellette individuelle articulée sur ledit moyen d'actionnement translatif et une paire de biellettes articulées sur ladite mâchoire mobile et sur la biellette individuelle qu'elles enserrent par leurs extrémités correspondantes, la butée de limitation du mouvement des biellettes étant formée par une broche, tandis que le moyen conjugué destiné à coopérer avec ladite butée est un épaulement, ou un cran aménagé sur la biellette individuelle.According to one embodiment, the articulation connecting the movable jaw to the translative actuation means comprises an individual link articulated on said translational actuating means and a pair of links articulated on said jaw mobile and on the individual link which they enclose by their corresponding ends, the stop for limiting the movement of the rods being formed by a spindle, while the combined means intended to cooperate with said stop is a shoulder, or a notch fitted on the individual link.

Toutefois, on peut bien sûr imaginer d'intervertir la paire de biellettes avec la biellette individuelle ou encore d'utiliser deux paires de biellettes, ou seulement deux biellettes, ...However, one can of course imagine switching the pair of rods with the individual link or to use two pairs of links, or only two rods, ...

Par exemple, la mâchoire reliée à la partie fixe du système d'actionnement, comporte l'axe de pivotement de la mâchoire mobile, ledit axe étant aménagé dans le plan de contact desdites mâchoires.For example, the jaw connected to the fixed part of the actuation system, comprises the pivot axis of the movable jaw, said axis being arranged in the contact plane of said jaws.

Avantageusement, la mâchoire reliée à la partie fixe du système d'actionnement est montée de manière tournante sur ladite partie fixe et de préférence, ladite mâchoire est positionnée de manière à présenter son plan de serrage de façon sensiblement perpendiculaire à la direction du mouvement du moyen d'entraínement translatif .Advantageously, the jaw connected to the fixed part of the actuation system is rotatably mounted on said fixed part and preferably, said jaw is positioned so as to present its clamping plane substantially perpendicular to the direction of movement of the translational drive means .

Le système d'actionnement comporte par exemple un vérin, le moyen d'entraínement translatif étant réalisé par l'extrémité de la tige du vérin et/ou une pièce fixée à celle-ci.The actuation system comprises for example a cylinder, the drive means translative being produced by the end of the cylinder rod and / or a part attached to it.

Avantageusement, dans le cadre d'une utilisation comme outil de sertissage, chaque mâchoire comporte un logement destiné à recevoir une matrice de sertissage.Advantageously, in the context of use as a crimping tool, each jaw has a housing intended to receive a crimping die.

Toutefois, l'invention concerne tout type d'outil de serrage englobant aussi d'une manière générale les outils pour couper en cisaillement.However, the invention relates to any type of clamping tool also including in general, the tools for cutting in shear.

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 est une élévation latérale d'un outil selon l'invention,
  • la figure 2 est une vue arrière de l'outil de la figure 1,
  • la figure 3 est une coupe selon III-III de la figure 2,
  • les figures 4 et 5 sont des coupes correspondant à la figure 3, l'outil étant respectivement en position de fermeture partielle obtenue par la poignée et en position de serrage.
The invention will be clearly understood on reading the description which follows and which refers to the appended drawings in which:
  • FIG. 1 is a side elevation of a tool according to the invention,
  • FIG. 2 is a rear view of the tool of FIG. 1,
  • FIG. 3 is a section on III-III of FIG. 2,
  • Figures 4 and 5 are sections corresponding to Figure 3, the tool being respectively in the partially closed position obtained by the handle and in the clamping position.

Sur les dessins, on peut voir un outil selon l'invention, sous forme ici d'un outil de sertissage destiné à sertir par exemple un raccord 1 sur un tuyau 2 (figures 1 et 3 à 5). Toutefois, l'invention peut bien entendu concerner, comme déjà dit, d'autres types d'outils de serrage.In the drawings, we can see a tool according to the invention, here in the form of a tool crimping tool intended to crimp for example a fitting 1 on a pipe 2 (Figures 1 and 3 to 5). However, the invention can of course relate, as already said, to other types clamping tools.

L'outil selon l'invention comporte une mâchoire 3 pourvue d'une partie de serrage 3a et d'une partie de fixation 3b sur laquelle est montée une mâchoire mobile 4 formée d'une partie de serrage 4a et d'une queue 4b, qui peut pivoter autour d'un axe de pivotement 5 solidaire de la partie de fixation 3b de la mâchoire 3, ledit axe 5 étant disposé ici sensiblement dans le plan de contact des parties de serrage des deux mâchoires.The tool according to the invention comprises a jaw 3 provided with a part of clamping 3a and a fixing part 3b on which is mounted a movable jaw 4 formed by a clamping part 4a and a shank 4b, which can pivot around a pivot axis 5 integral with the fixing part 3b of the jaw 3, said axis 5 being arranged here substantially in the contact plane of the clamping parts of the two jaws.

La partie de fixation 3b de la mâchoire 3 est fixée sur un système d'entraínement, ici sous la forme d'un vérin hydraulique 6 représenté partiellement sur les dessins, et qui comporte un cylindre 6a, un piston coulissant 6b muni d'un prolongement ou tige 6c, elle-même pourvue à son extrémité d'une tête 7 (figures 2 à 5), l'ensemble formé du piston 6b, de la tige 6c, de la tête 7 ou pour simplifier, cette dernière seule, formant un moyen d'entraínement translatif.The fixing part 3b of the jaw 3 is fixed on a drive system, here in the form of a hydraulic cylinder 6 partially shown in the drawings, and which comprises a cylinder 6a, a sliding piston 6b provided with an extension or rod 6c, itself provided at its end with a head 7 (FIGS. 2 to 5), the assembly formed of the piston 6b, the rod 6c, the head 7 or to simplify, the latter alone, forming a translational drive means.

L'actionnement du vérin est assuré par tout moyen telle une pompe électrique, par exemple.The actuation of the jack is ensured by any means such as an electric pump, for example.

Il est clair toutefois que le vérin pourrait bien entendu être uniquement électrique et/ou mécanique.It is clear however that the cylinder could of course be only electric and / or mechanical.

La partie fixe 3b de la mâchoire 3 est fixée sur le cylindre 6a, avantageusement de manière tournante afin de permettre un réglage en position.The fixed part 3b of the jaw 3 is fixed on the cylinder 6a, advantageously in a rotating manner to allow adjustment in position.

En outre, selon le mode de réalisation représenté, on peut constater que la partie de serrage 3a de la mâchoire 3 présente un plan de serrage disposé de manière sensiblement perpendiculaire à la direction du mouvement de la tête 7, c'est-à-dire du moyen d'entraínement translatif.In addition, according to the embodiment shown, it can be seen that the clamping part 3a of the jaw 3 has a clamping plane so arranged substantially perpendicular to the direction of movement of the head 7, that is to say of the translational drive means.

Comme le montrent bien les dessins, la tête 7 du système d'actionnement est reliée à la queue 4b de la mâchoire 4 par une articulation 8 à biellettes. As the drawings clearly show, the head 7 of the actuation system is connected to the tail 4b of the jaw 4 by an articulation 8 with links.

L'articulation 8 présente ici une biellette individuelle 8a et une paire de biellettes 8b, 8'b dont une seule biellette pour la paire 8b, 8'b est visible sur les figures 1 et 3 à 5 (seule la figure 2 montre les trois biellettes).The articulation 8 here presents an individual link 8a and a pair of links 8b, 8'b of which only one link for the pair 8b, 8'b is visible in Figures 1 and 3 to 5 (only Figure 2 shows the three links).

Les biellettes 8a; 8b, 8'b peuvent se mouvoir au moins en partie dans la partie 3b de la mâchoire 3 qui présente à cet endroit une forme de U, comme le montre bien la figure 2.The links 8a; 8b, 8'b can move at least partly in the part 3b of jaw 3 which has a U-shape at this point, as shown well figure 2.

L'une des extrémités de la biellette individuelle 8a est articulée aux extrémités correspondantes de la paire de biellettes 8b, 8'b autour d'un axe commun 9.One end of the individual link 8a is articulated at the ends corresponding to the pair of links 8b, 8'b around a common axis 9.

Les autres extrémités des biellettes 8a et 8b, 8'b sont montées pivotantes respectivement sur la tête 7 du système d'actionnement autour d'un axe 10 et sur la queue 4b de la mâchoire mobile 4 autour d'un axe 11.The other ends of the links 8a and 8b, 8'b are pivotally mounted respectively on the head 7 of the actuation system around an axis 10 and on the tail 4b of the movable jaw 4 around an axis 11.

Comme le montrent les dessins, la biellette 8a est en outre solidaire d'un levier formant une poignée 12.As shown in the drawings, the link 8a is also secured to a lever forming a handle 12.

On comprend que les biellettes 8a et 8b, 8'b forment une articulation du type genouillère dont la géométrie est modifiable par l'action de la poignée 12, de telle sorte qu'une action de celle-ci dans un sens ou dans l'autre permet de faire pivoter la mâchoire mobile 4, soit vers la mâchoire 3 en la rapprochant, soit au contraire en sens inverse en l'écartant.It is understood that the links 8a and 8b, 8'b form a joint of the type knee brace whose geometry is modifiable by the action of the handle 12, so that an action of the latter in one direction or the other makes it possible to rotate the jaw movable 4, either towards the jaw 3 by bringing it closer, or on the contrary in direction reverse by removing it.

En outre, comme le montrent les figures 3 à 5, la biellette 8a est pourvue d'un épaulement ou cran 13 tandis que la paire de biellettes 8b, 8'b est munie d'une broche formant butée 14 destinée à coopérer avec ledit cran 13, comme il sera expliqué ci-après.In addition, as shown in Figures 3 to 5, the rod 8a is provided with a shoulder or notch 13 while the pair of links 8b, 8'b is provided with a pin forming a stop 14 intended to cooperate with said notch 13, as will be explained below.

Enfin, les parties de serrage 3a, 4a des mâchoires respectivement 3 et 4, sont pourvues de logements, ici semi-circulaires, prévus pour recevoir des matrices de sertissage 15, 16 amovibles pour s'adapter à divers diamètres de raccords 1 à sertir sur divers tuyaux 2.Finally, the clamping parts 3a, 4a of the jaws 3 and 4 respectively, are provided with housings, here semi-circular, intended to receive matrices of crimping 15, 16 removable to adapt to various diameters of fittings 1 to crimp on various pipes 2.

Suite à cette description, le fonctionnement et l'utilisation sont simples à comprendre.Following this description, the operation and use are simple to understand.

Initialement, l'outil se présente comme représenté sur les figures 1 à 3, c'est-à-dire que les mâchoires 3 et 4 sont ouvertes de telle sorte que l'on peut les passer autour du raccord 1 à sertir.Initially, the tool looks as shown in Figures 1 to 3, that is to say that jaws 3 and 4 are open so that you can pass them around fitting 1 to be crimped.

Les mâchoires 3 et 4 étant positionnées, comme il vient d'être dit, on actionne la poignée 12 (par rapport aux dessins, on la soulève) de manière à modifier la géométrie des biellettes 8a; 8b, 8'b, l'axe commun 9 desdites biellettes décrivant un cercle autour de l'axe 10 jusqu'à ce que le cran 13 de la biellette 8a vienne au contact de la butée 14 comme le montre la figure 4. Au cours de cette action, la mâchoire mobile 4 pivote vers la mâchoire 3 qui est fixe par rapport à ladite mâchoire 4.The jaws 3 and 4 being positioned, as has just been said, we operate the handle 12 (in relation to the drawings, it is raised) so as to modify the geometry links 8a; 8b, 8'b, the common axis 9 of said links describing a circle around the axis 10 until the notch 13 of the link 8a comes into contact with the stop 14 as shown in FIG. 4. During this action, the movable jaw 4 pivots towards the jaw 3 which is fixed relative to said jaw 4.

Dans cette position de la figure 4, les mâchoires 3 et 4 sont en partie fermées autour du raccord 1 et, comme le montre bien ladite figure, le cran 13 et la butée 14 sont positionnés de manière telle que l'axe commun 9 des biellettes est passé d'un côté à l'autre de la ligne géométrique reliant les axes 10 et 11.In this position of FIG. 4, the jaws 3 and 4 are partly closed around the fitting 1 and, as well shown in the said figure, the notch 13 and the stop 14 are positioned in such a way that the common axis 9 of the rods has passed from one side to side of the geometric line connecting axes 10 and 11.

En outre dans cette position, la ligne reliant les axes de pivotement 9 et 10 est sensiblement coaxiale à l'axe du vérin 6, ou d'une manière plus générale, parallèle à la direction du mouvement translatif de la tête 7.Also in this position, the line connecting the pivot axes 9 and 10 is substantially coaxial with the axis of the cylinder 6, or more generally, parallel to the direction of the translational movement of the head 7.

Après cette première manoeuvre manuelle de fermeture partielle et rapide, on peut actionner de manière connue le système d'actionnement 6, de telle sorte que le piston 6b pousse la tête 7.After this first manual operation of partial and rapid closing, we can actuate the actuation system 6 in a known manner, so that the piston 6b pushes head 7.

Dans les positions des figures 4 et 5, on comprend que les biellettes 8a; 8b, 8'b sont bloquées par la butée 14 et ne peuvent plus tourner l'une par rapport aux autres dans le sens précédemment décrit, de telle sorte que quand le vérin 6 pousse les biellettes, étant donné la direction des efforts, celles-ci sont rigidement liées ce qui permet un serrage de la mâchoire 4 sur la mâchoire 3 par ledit vérin 6 jusqu'à ce que l'ensemble prenne la position de la figure 5.In the positions of Figures 4 and 5, it is understood that the links 8a; 8b, 8'b are blocked by the stop 14 and can no longer rotate in relation to each other in the direction previously described, so that when the cylinder 6 pushes the rods, given the direction of the forces, these are rigidly linked which allows clamping of the jaw 4 on the jaw 3 by said cylinder 6 until the assembly takes the position of FIG. 5.

Dans la position de la figure 5, la pression de serrage est telle que la poignée 12 ne peut pas être actionnée et il faut d'abord relâcher la pression du vérin 6 pour revenir dans la position de la figure 4.In the position of Figure 5, the clamping pressure is such that the handle 12 cannot be actuated and the pressure of cylinder 6 must first be released to return to the position of figure 4.

C'est à partir de la position de la figure 4, que l'on peut de nouveau actionner la poignée 12 en sens inverse du précédent pour revenir dans la position des figures 1 à 3.It is from the position of Figure 4, that we can again operate the handle 12 in the opposite direction from the previous one to return to the position of FIGS. 1 to 3.

On comprend aisément que la mise en action du système d'actionnement est tout de suite opérationnelle et que les manoeuvres d'approche à la main sont très rapides, d'où un temps de fonctionnement réduit.It is easily understood that the actuation of the actuation system is immediately operational and the hand approach maneuvers are very rapid, hence a reduced operating time.

La poignée 12 permet de constituer non seulement un moyen de manoeuvre et de fermeture mais aussi un moyen ergonomique de soutien et d'orientation particulièrement pratique encore accru par le montage tournant de la mâchoire 3 sur le système d'actionnement, comme précisé ci-avant.The handle 12 makes it possible to constitute not only a means of operation and closure but also an ergonomic means of support and guidance particularly even more practical by the rotary mounting of the jaw 3 on the system actuation, as specified above.

Claims (10)

Outil de serrage comportant deux mâchoires (3,4) mues par un système d'actionnement (6) muni d'un moyen d'entraínement translatif (7), caractérisé en ce que l'une (4) des mâchoires est montée mobile de manière pivotante par rapport à l'autre mâchoire (3) qui est reliée à une partie fixe (6a) du système d'actionnement (6), ladite mâchoire mobile (4) étant reliée au moyen d'actionnement translatif (7) par une articulation (8) à biellettes (8a; 8b,8'b) en partie solidaire d'un levier formant une poignée (12) qui est aménagée de manière à permettre de faire pivoter la mâchoire mobile (4) dans un sens ou dans l'autre selon deux positions extrêmes respectivement d'ouverture et de fermeture partielle en modifiant la géométrie relative des biellettes de l'articulation (8), tandis que le moyen d'entraínement translatif (7) peut agir sur lesdites biellettes pour faire pivoter la mâchoire mobile (4), soit dans le sens du serrage des mâchoires après l'actionnement de la poignée (12) jusqu'à sa position extrême de fermeture partielle, soit en sens inverse de desserrage avant l'actionnement de ladite poignée (12) vers sa position d'ouverture.Clamping tool comprising two jaws (3,4) moved by an actuation system (6) provided with a translational drive means (7), characterized in that one (4) of the jaws is mounted movable by pivotally with respect to the other jaw (3) which is connected to a fixed part (6a) of the actuation system (6), said movable jaw (4) being connected to the translational actuation means (7) by a articulation (8) with links (8a; 8b, 8'b) partially secured to a lever forming a handle (12) which is arranged so as to allow the movable jaw (4) to be pivoted in one direction or in the 'other according to two extreme positions respectively of partial opening and closing by modifying the relative geometry of the links of the joint (8), while the translational drive means (7) can act on said links to rotate the jaw movable (4), either in the direction of clamping the jaws after actuation of the handle (12) to its extreme partially closed position, or in the opposite direction of loosening before the actuation of said handle (12) to its open position. Outil de serrage selon la revendication 1, caractérisé en ce que l'articulation (8) reliant la mâchoire mobile au moyen d'actionnement translatif, comporte au moins deux biellettes (8a; 8b,8'b) pivotantes entre elles par une de leurs extrémités dont les autres extrémités sont montées pivotantes respectivement sur la mâchoire mobile (4) et sur ledit moyen d'entraínement translatif (7), tandis que la poignée (12) est solidaire de la ou des biellettes (8a) montées pivotantes sur le moyen translatif d'entraínement (7) et qu'au moins une butée (14) et au moins un moyen conjugué (13) sont prévus sur les biellettes pour coopérer en vue de limiter la déformation géométrique desdites biellettes par la poignée (12) dans la position extrême de fermeture partielle des mâchoires, de telle sorte que les biellettes soient bloquées et rigidement liées l'une à l'autre lors l'actionnement en poussée du moyen d'entraínement translatif (7) en vue d'assurer le serrage des mâchoires.Clamping tool according to claim 1, characterized in that the articulation (8) connecting the movable jaw by means of translational actuation, comprises at least two links (8a; 8b, 8'b) pivoting between them by one of their ends, the other ends of which are pivotally mounted respectively on the movable jaw (4) and on said translational drive means (7), while the handle (12) is integral with the link (s) (8a) pivotally mounted on the means translative drive (7) and that at least one stop (14) and at least one conjugate means (13) are provided on the links to cooperate in order to limit the geometric deformation of said links by the handle (12) in the extreme position of partial closure of the jaws, so that the rods are locked and rigidly connected to each other when the translational drive means (7) are actuated in thrust in order to ensure the clamping of the macho ires. Outil de serrage selon la revendication 2, caractérisé en ce que la butée (14) de limitation de la déformation géométrique des biellettes est aménagée de manière à retenir au moins l'une des biellettes (8a) lorsque ces dernières, actionnées par la poignée (12), ont pris une position telle que l'axe de pivotement commun (9) des deux biellettes est passé d'un côté à l'autre de la ligne géométrique formée par les axes de pivotement (10,11) des deux autres extrémités des biellettes. Clamping tool according to claim 2, characterized in that the stop (14) for limiting the geometric deformation of the links is arranged so as to retain at least one of the links (8a) when the latter, actuated by the handle ( 12), have taken a position such that the common pivot axis (9) of the two rods has passed from one side to the other of the geometric line formed by the pivot axes (10,11) of the other two ends links. Outil de serrage selon la revendication 3, caractérisé en ce que la butée (14) de limitation est aménagée pour que dans la position de blocage des biellettes, après l'actionnement de la poignée (12), mais avant l'actionnement du moyen d'entraínement translatif (7), l'axe de pivotement commun (9) des biellettes et l'axe de pivotement (10) de la biellette (8a) avec le moyen d'entraínement (7) déterminent une ligne sensiblement parallèle à la direction du mouvement translatif dudit moyen d'entraínement.Clamping tool according to claim 3, characterized in that the limiting stop (14) is arranged so that in the locking position of the links, after actuation of the handle (12), but before actuation of the means d translational drive (7), the common pivot axis (9) of the links and the pivot axis (10) of the link (8a) with the drive means (7) determine a line substantially parallel to the direction the translational movement of said drive means. Outil de serrage selon l'une des revendications 2 à 4, caractérisé en ce que l'articulation (8) reliant la mâchoire mobile (4) au moyen d'actionnement translatif (7) comporte une biellette individuelle (8a) articulée sur ledit moyen d'actionnement translatif (7) et une paire de biellettes (8b,8'b) articulées sur ladite mâchoire mobile (4) et sur la biellette individuelle (8a) qu'elles enserrent par leurs extrémités correspondantes, la butée de limitation du mouvement des biellettes étant formée par une broche (14), tandis que le moyen conjugué destiné à coopérer avec ladite butée est un épaulement ou un cran (13) aménagé sur la biellette individuelle.Clamping tool according to one of claims 2 to 4, characterized in that the articulation (8) connecting the movable jaw (4) by means of translational actuation (7) comprises an individual link (8a) articulated on said means translational actuation (7) and a pair of links (8b, 8'b) articulated on said movable jaw (4) and on the individual link (8a) which they enclose by their corresponding ends, the movement limitation stop rods being formed by a pin (14), while the combined means intended to cooperate with said stopper is a shoulder or a notch (13) arranged on the individual rod. Outil de serrage selon l'une des revendications 1 à 5, caractérisé en ce que la mâchoire (3) reliée à la partie fixe (6a) du système d'actionnement, comporte l'axe de pivotement (5) de la mâchoire mobile (4), ledit axe étant aménagé dans le plan de contact desdites mâchoires.Clamping tool according to one of claims 1 to 5, characterized in that the jaw (3) connected to the fixed part (6a) of the actuation system, comprises the pivot axis (5) of the movable jaw ( 4), said axis being arranged in the contact plane of said jaws. Outil selon l'une des revendications 1 à 6, caractérisé en ce que la mâchoire (3) reliée à la partie fixe (6a) du système d'actionnement est montée de manière tournante sur ladite partie fixe (6a).Tool according to one of claims 1 to 6, characterized in that the jaw (3) connected to the fixed part (6a) of the actuation system is mounted so as to rotate on said fixed part (6a). Outil selon l'une des revendications 1 à 7, caractérisé en ce que la mâchoire (3) reliée à la partie fixe (6a) du système d'actionnement est positionnée de manière à présenter son plan de serrage de façon sensiblement perpendiculaire à la direction du mouvement du moyen d'entraínement translatif (7).Tool according to one of claims 1 to 7, characterized in that the jaw (3) connected to the fixed part (6a) of the actuation system is positioned so as to present its clamping plane substantially perpendicular to the direction of the movement of the translational drive means (7). Outil selon l'une des revendications 1 à 8, caractérisé en ce que le système d'actionnement comporte un vérin (6), le moyen d'entraínement translatif étant réalisé par l'extrémité de la tige (6c) du vérin et/ou une pièce (7) fixée à celle-ci.Tool according to one of claims 1 to 8, characterized in that the actuation system comprises a jack (6), the translational drive means being produced by the end of the rod (6c) of the jack and / or a part (7) fixed thereto. Outil selon l'une des revendications 1 à 9, destiné à constituer un outil de sertissage, caractérisé en ce que chaque mâchoire (3,4) comporte un logement destiné à recevoir une matrice de sertissage (15,16).Tool according to one of claims 1 to 9, intended to constitute a crimping tool, characterized in that each jaw (3,4) has a housing intended to receive a crimping die (15,16).
EP01400210A 2000-01-31 2001-01-26 Clamping tool and especially crimping tool Withdrawn EP1122031A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0001196 2000-01-31
FR0001196A FR2804354B1 (en) 2000-01-31 2000-01-31 TIGHTENING TOOL AND PARTICULARLY CRIMPING

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EP1122031A1 true EP1122031A1 (en) 2001-08-08

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EP1649968A3 (en) * 2004-10-21 2007-01-03 UNIVER S.p.A. Work piece gripping device for robotized manipulating systems
DE10318508B4 (en) * 2003-02-07 2008-02-28 Gustav Klauke Gmbh Pressing jaw lever pair for hydraulic or electrical pressing devices
EP2796245A1 (en) * 2013-04-23 2014-10-29 Geberit International AG Pressing tool
CN104384986A (en) * 2014-10-30 2015-03-04 马单 Sphere fixing and clamping device
WO2018067325A1 (en) * 2016-10-07 2018-04-12 Milwaukee Electric Tool Corporation Hydraulic power tool
CN109131745A (en) * 2018-06-29 2019-01-04 武汉船用机械有限责任公司 A kind of emergency release
CN109663827A (en) * 2019-02-18 2019-04-23 绍兴康健精密不锈钢有限公司 A kind of stretching clamp for stainless steel tube

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GB2538433B (en) * 2014-07-17 2018-03-21 Jaguar Land Rover Ltd Apparatus for supporting a bicycle on a vehicle
CN109483432A (en) * 2018-11-12 2019-03-19 徐州天泽乘龙机械制造有限公司 A kind of gripping mechanism of spheroidal graphite pipe

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GB2191428A (en) * 1986-04-24 1987-12-16 Josef Gerhard Tunkers Toggle lever workpiece clamping device
DE3719442A1 (en) * 1987-06-11 1988-12-22 Pfisterer Elektrotech Karl Portable press for producing compression joints
EP0679476A2 (en) * 1994-04-28 1995-11-02 Weidmüller Interface GmbH & Co. Power wrench
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10318508B4 (en) * 2003-02-07 2008-02-28 Gustav Klauke Gmbh Pressing jaw lever pair for hydraulic or electrical pressing devices
EP1649968A3 (en) * 2004-10-21 2007-01-03 UNIVER S.p.A. Work piece gripping device for robotized manipulating systems
US7290816B2 (en) 2004-10-21 2007-11-06 Univer S.P.A. Work piece gripping device for robotized manipulating systems
EP2796245A1 (en) * 2013-04-23 2014-10-29 Geberit International AG Pressing tool
CN104384986A (en) * 2014-10-30 2015-03-04 马单 Sphere fixing and clamping device
WO2018067325A1 (en) * 2016-10-07 2018-04-12 Milwaukee Electric Tool Corporation Hydraulic power tool
US10981264B2 (en) 2016-10-07 2021-04-20 Milwaukee Electric Tool Corporation Hydraulic power tool
CN109131745A (en) * 2018-06-29 2019-01-04 武汉船用机械有限责任公司 A kind of emergency release
CN109131745B (en) * 2018-06-29 2019-12-06 武汉船用机械有限责任公司 Emergency release device
CN109663827A (en) * 2019-02-18 2019-04-23 绍兴康健精密不锈钢有限公司 A kind of stretching clamp for stainless steel tube

Also Published As

Publication number Publication date
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FR2804354A1 (en) 2001-08-03

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