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EP2027971B1 - Pince de pression destinée à la compression radiale de tuyaux, éléments de tuyaux et analogues - Google Patents

Pince de pression destinée à la compression radiale de tuyaux, éléments de tuyaux et analogues Download PDF

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Publication number
EP2027971B1
EP2027971B1 EP08014576.6A EP08014576A EP2027971B1 EP 2027971 B1 EP2027971 B1 EP 2027971B1 EP 08014576 A EP08014576 A EP 08014576A EP 2027971 B1 EP2027971 B1 EP 2027971B1
Authority
EP
European Patent Office
Prior art keywords
pressing
teeth
press clamp
clamp according
receiver
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.)
Active
Application number
EP08014576.6A
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German (de)
English (en)
Other versions
EP2027971A2 (fr
EP2027971A3 (fr
Inventor
Rudolf Dr.-Ing. Wagner
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.)
Rems GmbH and Co KG
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Rems GmbH and Co KG
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Publication date
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Publication of EP2027971A2 publication Critical patent/EP2027971A2/fr
Publication of EP2027971A3 publication Critical patent/EP2027971A3/fr
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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

Definitions

  • the invention relates to a pressing tongs for the radial compression of pipes, pipe sections and the like according to the preamble of claim 1.
  • Press tongs have against each other pivotable pressing jaws, which are provided at one end in each case with a receptacle for the workpiece to be pressed.
  • By closing the pressing tongs lying in the receptacles workpiece is radially compressed. So that the workpieces can be inserted into the receptacles of the pressing jaws or the pressing tongs can be placed on the workpiece to be pressed, the pressing jaws must be pivoted relatively far against each other.
  • axial displacements of the two pressing jaws in the direction of their pivot axes can then occur, as a result of which the quality of the pressing can be impaired.
  • the two crimping pliers are provided with cutouts, in each of which a die is received.
  • the two dies consist of two limited mutually pivotable die parts. They are provided on both sides of the recesses with teeth in the form of lugs, which are completely disengaged with open crimping pliers and prevent squeezing out of the workpiece to be pressed during the pressing process.
  • inserts are known ( EP 1 731 267 A2 ), which are inserted into a receptacle of a pressing tongs.
  • the inserts have teeth with which they mesh during the pressing process.
  • a pressing tongs US 5 267 464 A
  • a tongue is provided, which engages in the closed position of the pressing tongs in an end-side recess of the other pressing jaw. If the pressing tongs are opened, then the tongue of one pressing jaw is not in engagement with the depression of the other pressing jaw. Therefore, when the pressing tongs are open, the two pressing jaws can perform undesired axial movements.
  • a pressing element In another known pressing tongs (EP 1 591 176 A1 ) overlap the two cheek plates in the region of the hinge axis, a pressing element. It is substantially U-shaped and has outer legs, which are located on the opposite outer sides of the pressing jaws. The end faces of the two press jaws are comb-like. When the crimping tool is opened, the comb teeth come out of engagement with each other so that the two crimping jaws can perform unwanted axial movements against each other.
  • a pressing tongs is known ( DE 10 2005 046 333 B3 ), whose pressing jaws are provided in the region of inlet contours with depressions and teeth. They serve to be able to open the pressing tongs very far.
  • the two pressing jaws are designed as two-armed lever, wherein the receptacle for the workpiece to be pressed on a lever arm and the recesses and teeth on the other lever arm of the two pressing jaws are provided. On the recordings of the two cheek plates close flat front sides.
  • the invention has for its object to form the generic pressing tongs so that with her the workpieces can be easily pressed with high press quality.
  • the two pressing jaws are provided with the guide elements. They ensure that the two pressing jaws in the axial direction of the pivot axis above at least the largest part of the pivoting path can not be moved relative to each other. As a result, the two pressing jaws retain their axial position with respect to the pivot axis during the entire pressing process, since they are guided by the guide elements. On this catfish perfect compression of the workpieces is guaranteed, so that results in a very high press quality.
  • the guide elements are teeth with which the pressing jaws engage with each other.
  • the recording facing end faces of the guide elements are flat and lie in a common plane. This common plane is advantageously parallel to an axial plane passing through the deepest part of the receptacle.
  • the pressing jaws are provided on the other side of the receptacle with additional teeth whose end faces facing the receptacle are also flat and lie in a common plane. This plane is also advantageous parallel to the axial plane of the recording.
  • This design ensures that, when the pressing tongs are closed, the end faces of the teeth and of the guide elements form a closed, flat surface on both sides of the receptacle. This prevents the material of the workpiece to be pressed from being pressed outwards during the pressing process and forms undesirable burrs.
  • the guide elements of the pressing jaws thus have a dual function, by the prevent an axial displacement of the pressing jaws to each other and on the other hand form closed closed side surfaces during the closing of the pressing tongs, by which a lateral pushing away of material of the workpiece to be pressed is prevented.
  • the crimping tool is used to radially compress fittings with which pipes can be connected to each other.
  • the pressing tongs has two pressing jaws 1, 2 which are pivotable relative to one another and which are of the same design but are arranged rotated through 180 ° with respect to one another.
  • Both pressing jaws 1, 2 are designed as two-armed levers which are pivotable about mutually parallel axes 3, 4. They are formed by screws, with which the pressing jaws 1, 2 are pivotally mounted between two tabs 5, 6. They have approximately quadrangular outline and are located on the opposite outer sides of the two pressing jaws 1, 2 at.
  • the two tabs 5, 6 are advantageously the same design and provided on its one longitudinal side with a rounded recess 7, 8. It lies approximately half the length of the longitudinal side of the tabs 5, 6.
  • a connecting tab 9, 10 from, the rectangular Outline has and is provided with an opening 11, 12.
  • a (not shown) driving device can be connected, with which the pressing jaws 1, 2 can be pivoted in a manner to be described for the pressing operation against each other.
  • the drive device is connected to a connecting bolt, which is inserted into the openings 11, 12 of the connecting lugs 9, 10, with the pressing tongs.
  • This drive device can be driven, for example, hydraulically, pneumatically or by electric motor.
  • the pressing jaws 1, 2 are, as in the 4 and 6 is shown for the pressing jaw 1, provided with a passage opening 13 through which the pivot axis 3 and 4 forming bolts is inserted, with which the pressing jaws 1, 2 are pivotally mounted between the tabs 5, 6.
  • Each pressing jaw 1, 2 has the arms 14, 15 and 16, 17.
  • the arms 14, 16 are tapered towards their free end.
  • the arms 14, 16 have mutually facing flat inner surfaces 18, 19, the functional surfaces form, with which cooperates with the abutting connecting plates 9, 10 drive device during the pressing process.
  • This drive device has an extendable plunger, at the end of which the pressing pliers facing the rollers are rotatably mounted, which reach the inner surfaces 18, 19 of the pressing jaws 1, 2 during extension of the plunger.
  • the arms 14, 16 are pressed apart by the rollers, whereby the arms 15, 17 of the pressing jaws 1, 2 are pivoted in the direction of each other.
  • the two arms 14, 16 by a (not shown) pressure spring loaded so that the arms 15, 17 in the direction of their in the Fig. 1 to 3 shown closed position are charged. This ensures that the crimping pliers are closed.
  • the compression spring in the pressing tongs so that the two arms 15, 17 are pressure-loaded, so that the pressing tongs is always open. The workpieces to be pressed can then be easily inserted between the two arms 15, 17.
  • the free ends of the arms 14, 16 are each provided with a connection 20, 21, which is advantageously designed as a passage opening.
  • a manual drive device by means of a bolt or the like. Be connected.
  • the manual drive device is designed in the manner of a pair of pliers and has two mutually pivotable two-armed lever.
  • the short lever arms are connected to the terminals 20, 21, while the longer lever arms serve as operating arms. Since such manual drive devices are known, they are not explained in detail.
  • the pressing tongs is thus designed so that either a driven or a manual drive device can be connected to them.
  • the driven drive device is connected to the terminal lugs 9, 10 and the manual drive device to the terminals 20, 21.
  • the arm 15 of the pressing jaw 1 is provided with a semicircular recess 22 which is bounded by a semicircular bottom 23. It extends over the width of the pressing jaw 1 and is semi-cylindrical. Depending on the pressing contour of the bottom 23 may also have a different shape, such as polygonal shape.
  • the bottom 23 extends over an angular range of slightly smaller than 180 °. At both ends of the bottom 23 connects to planar side surfaces 24, 25, which are formed by the facing end faces of teeth 26, 27.
  • the side surfaces 24, 25 are parallel to each other and parallel to an axial plane 28 which extends through the lowest point of the bottom 23 ( Fig. 4 ).
  • the side surfaces 24, 25 extend beyond the axis of curvature 29 of the bottom 23.
  • the teeth 26, 27 are aligned with each other.
  • the teeth 26 are shorter than the teeth 27 and extend to the end face 30 of the pressing jaw 1.
  • gaps 31, 32 are formed, in which engage the teeth 26, 27 of the pressing jaw 2.
  • the interspaces 31, 32 are formed so that the teeth 26, 27 of the pressing jaws 1, 2 in the closed position with their side surfaces abut each other.
  • the teeth 27 have a length such that these teeth even at maximum open pressing tongs ( Fig. 1 to 3 ) are not disengaged.
  • the teeth 27, at least in their rear region form guide elements which ensure that the pressing jaws 1, 2 are exactly aligned with each other in each position, so that during the subsequent pressing operation no relative displacement of the pressing jaws 1, 2 in the direction of their pivot axes 3, 4 he follows. In this way it is ensured that the compression of the workpiece is flawless.
  • the teeth 26, 27 advantageously have a rectangular cross-section, so that the teeth of the pressing jaws 1, 2 lie flat against one another over their entire height in the engaged position.
  • the teeth 26, 27 of the two pressing jaws 1, 2 abut against the bottom 33, 34 of the intermediate spaces 31, 32.
  • the pressing jaws 1, 2 surround the workpiece to be pressed over 180 °.
  • the side surfaces 24, 25 of the teeth 26, 27 of the two pressing jaws 1, 2 each lie in a common plane, which runs parallel to the radial plane 28. Since the teeth 26, 27 of the two pressing jaws 1, 2 fully engage in this closed position of the pressing tongs and the width of the teeth corresponds to the width of the intermediate spaces 31, 32, a continuous side surface 24, 25 is formed.
  • the pressed workpiece has a flawless, burr-free surface after the pressing process.
  • the pressing jaw 1 is provided in the region of the arm 14 with a blind hole 35 into which one end of the Compressive spring is used, with which the two pressing jaws 1, 2 are loaded against each other.
  • the pressing jaws 1, 2 Since the pivoting of the pressing jaws 1, 2 is not very large, a relatively small length of the inner surface 18 is sufficient. It lies at an obtuse angle to a plane 36 containing the upper side of the teeth 26, 27 (FIG. Fig. 4 ). As a result, the pressing jaws 1, 2 can be made very compact, so that the pressing tongs are handy and have only low weight.
  • To the inner surface 18 includes a part-circular recess 37, which connects the inner surface 18 with an inclined surface 38. In her is the blind hole 35th As is clear from the 4 to 6
  • the inclined surface 38 also extends at an obtuse angle to the plane 36.
  • the inclined surface 38 may lie with the inner surface 18 in a common plane. In the exemplary embodiment, however, the inclined surface 38 is arranged offset relative to the inner surface 18 in the direction of the plane 36.
  • the facing away from the recess 22 end face 39 of the teeth 27 is chamfered and is advantageously in the inclined surface 38.
  • the engagement region of the teeth 27 is at the level of the tabs 5, 6, seen in Schwenkachscardi, thus covered by the tabs.
  • the pressing tongs are characterized as a result of the training described by the fact that with her flawless, non-degree pressings are possible, the pressing tongs being characterized by a compact design and a low weight.
  • the pressing tongs can be connected by the user either to a manual or to a driven drive device. This allows the pressing tongs to be used variably by the user. Since the two pressing jaws 1, 2 and also the tabs 5, 6 with the connecting lugs 9, 10 are each formed the same, is also a cost-effective production possible. The assembly of the pressing tongs is therefore very easy.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Press Drives And Press Lines (AREA)
  • Table Equipment (AREA)

Claims (15)

  1. Pince de pression destinée à la compression radiale de tuyaux, éléments de tuyaux et analogues avec deux mâchoires de compression (1, 2), pivotables relativement l'une par rapport à l'autre, comprenant respectivement une réception (22) pour la pièce à travailler, avec des dents primaires (27) qui s'engrènent, et qui s'étendent jusqu'à la réception (22) et se raccordent à une extrémité de la réception (22), avec d'autres dents (26), disposées sur le côté opposé de la réception (22) par rapport aux premières dents (27) et qui se raccordent à l'autre extrémité de la réception (22), les côtés frontaux (24, 25) des dents (26, 27) primaires et secondaires formant respectivement un surface fermée quand la pince de pression est fermée,
    caractérisée en ce que les dents (26, 27) primaires et secondaires sont partie des mâchoires de compression (1, 2), que les dents primaires (27) sont des éléments de guidage, lesquels empêchent au moins sur la majeure partie du chemin de pivotement d'au moins la une mâchoire de compression (1, 2) un déplacement en direction de l'axe de pivotement (3, 4), et engrènent l'un à l'autre les éléments de guidage (27) des mâchoires de compression (1, 2) sur au moins la majeure partie du chemin de pivotement d'au moins une mâchoire de compression (1, 2) et que les côtés frontaux (24, 25) des dents (26, 27) sont respectivement plats et forment une surface fermée et d'un seul tenant quand la pince de pression est fermée.
  2. Pince de pression selon revendication 1,
    caractérisée en ce que le côté frontal (39) des éléments de guidage (27), détourné de la réception (22) est biaisé.
  3. Pince de pression selon revendication 1 ou 2,
    caractérisée en ce que le plan commun des côtés frontaux (25) des éléments de guidage (27) est situé parallèlement par rapport à un plan axial (28), se déroulant par la partie la plus profonde de la réception (22).
  4. Pince de pression selon une des revendications 1 à 3,
    caractérisée en ce que les côtés frontaux (24) des dents (26), tournés vers les éléments de guidage (27) sont situés parallèlement par rapport au plan axial (28) de la réception (22).
  5. Pince de pression selon une des revendications 1 à 4,
    caractérisée en ce que les éléments de guidage (27) et les dents (26) dépassent d'un plan, comprenant l'axe de courbure (29) de la réception (22).
  6. Pince de pression selon une des revendications 1 à 5,
    caractérisée en ce que les éléments de guidage (27) et/ou les dents (26) ont une coupe transversale rectangulaire.
  7. Pince de pression selon une des revendications 1 à 6,
    caractérisée en ce que les éléments de guidage (27) se raccordent à leurs extrémités détournées de la réception (22) à un plan incliné (38) des mâchoires de compression (1, 2).
  8. Pince de pression selon revendication 7,
    caractérisée en ce que le plan incliné (38) forme un angle obtus avec le côté supérieur des éléments de guidage (27).
  9. Pince de pression selon une des revendications 1 à 8,
    caractérisée en ce que les éléments de guidage (27) sont plus long que les dents (26) des mâchoires de compression (1, 2).
  10. Pince de pression selon une des revendications 1 à 9,
    caractérisée en ce que les mâchoires de compression (1, 2) comprennent respectivement un plan fonctionnel (18, 19), lequel coopère pendant l'opération de pression avec un dispositif d'entraînement et lequel sont les faces intérieures des bras (14, 15) des mâchoires de compression (1, 2).
  11. Pince de pression selon une des revendications 1 à 10,
    caractérisée en ce que les mâchoires de compression (1, 2) sont munies d'une première connexion (9, 10) pour un dispositif d'entraînement actionné, laquelle est disposée dans des brides (5, 6), entre lesquelles sont disposées les mâchoires de compression (1, 2),
  12. Pince de pression selon une des revendications 1 à 11,
    caractérisée en ce que les mâchoires de compression (1, 2) sont munies d'une seconde connexion (20, 21) pour un dispositif d'entraînement actionné manuellement, laquelle est prévue à l'extrémité libre des bras (14, 16) comprenant les plans fonctionnels (18, 19) des mâchoires de compression (1, 2).
  13. Pince de pression selon revendication 12,
    caractérisée en ce que la seconde connexion (20, 21) est formée par une ouverture dans l'extrémité libre des bras (14, 16) des mâchoires de compression (1, 2).
  14. Pince de pression selon une des revendications 1 à 13,
    caractérisée en ce que la partie de coopération des deux mâchoires de compression (1, 2) est située à peu près à hauteur des brides (5, 6), lesquelles sont munies d'une cavité (7, 8) de leur côté tourné vers la réception (22).
  15. Pince de pression selon revendication 14,
    caractérisée en ce que la cavité (7, 8) est prévue sur la demie longueur des brides (5, 6).
EP08014576.6A 2007-08-24 2008-08-16 Pince de pression destinée à la compression radiale de tuyaux, éléments de tuyaux et analogues Active EP2027971B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710040895 DE102007040895A1 (de) 2007-08-24 2007-08-24 Presszange zum radialen Verpressen von Rohren, Rohrstücken und dergleichen

Publications (3)

Publication Number Publication Date
EP2027971A2 EP2027971A2 (fr) 2009-02-25
EP2027971A3 EP2027971A3 (fr) 2010-08-04
EP2027971B1 true EP2027971B1 (fr) 2013-11-27

Family

ID=40149687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08014576.6A Active EP2027971B1 (fr) 2007-08-24 2008-08-16 Pince de pression destinée à la compression radiale de tuyaux, éléments de tuyaux et analogues

Country Status (3)

Country Link
EP (1) EP2027971B1 (fr)
DE (1) DE102007040895A1 (fr)
ES (1) ES2447038T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016100823A1 (de) * 2016-01-19 2017-07-20 Propress Gmbh Pressvorrichtung
DE102018101159A1 (de) * 2017-12-01 2019-06-06 Rennsteig Werkzeuge Gmbh Pressbacken, sowie Presszange mit zwei Zangenbacken
US10150153B1 (en) * 2018-01-09 2018-12-11 Ridge Tool Company Systems and methods to axially align dies
USD1025732S1 (en) * 2023-08-03 2024-05-07 Qing Dai Hydraulic tool

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987726A (en) 1963-04-09 1965-03-31 Hayden Nilos Ltd Device for performing a swaging operation
US5267464A (en) 1991-12-30 1993-12-07 Cleland John G Pipe ring crimping tool
DE20121845U1 (de) 2001-01-15 2003-06-12 Rems-Werk Christian Föll und Söhne GmbH & Co., 71332 Waiblingen Preßzange
DE10354307C5 (de) 2003-02-07 2019-01-17 Gustav Klauke Gmbh Verpressbackenpaar
DE202004007034U1 (de) 2004-04-30 2005-09-15 Viega Gmbh & Co Kg Presswerkzeug zum Verpressen von Werkstücken
FR2886874B1 (fr) 2005-06-10 2008-09-12 Dubuis Et Cie Sa M Jeu de deux matrices destinees a equiper une presse a reteindre et/ou a sertir
DE102005046333B3 (de) 2005-09-27 2006-10-19 Viega Gmbh & Co. Kg Presswerkzeug

Also Published As

Publication number Publication date
EP2027971A2 (fr) 2009-02-25
EP2027971A3 (fr) 2010-08-04
ES2447038T3 (es) 2014-03-11
DE102007040895A1 (de) 2009-02-26

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