EP1972394B1 - Pressing device for tubular workpieces - Google Patents

Pressing device for tubular workpieces Download PDF

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Publication number
EP1972394B1
EP1972394B1 EP08004038A EP08004038A EP1972394B1 EP 1972394 B1 EP1972394 B1 EP 1972394B1 EP 08004038 A EP08004038 A EP 08004038A EP 08004038 A EP08004038 A EP 08004038A EP 1972394 B1 EP1972394 B1 EP 1972394B1
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EP
European Patent Office
Prior art keywords
pressing
coupling
loop
pressing device
transfer gripper
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.)
Not-in-force
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EP08004038A
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German (de)
French (fr)
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EP1972394A1 (en
Inventor
Dr.Jur. Helmut Rothenberger
Stefan Geisperger
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Rothenberger AG
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Rothenberger AG
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Priority to PL08004038T priority Critical patent/PL1972394T3/en
Publication of EP1972394A1 publication Critical patent/EP1972394A1/en
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Publication of EP1972394B1 publication Critical patent/EP1972394B1/en
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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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods

Definitions

  • the invention relates to a pressing device for tubular workpieces with a at least two-part press loop whose members are hinged together and having an opening region for the insertion of the workpieces, and with a two-double transfer wrench for the connection of the press loop with a drive unit, wherein between the press loop and the transfer tong are arranged on each side of the opening area coupling elements.
  • a pressing tool with a double-armed pressing pliers is known, one end of which surround a press mouth, which can be closed by a spreading movement of the other ends.
  • the unilaterally opening press mouth enclosing ends lie in the closed state of the forceps jaw in a plane and can be synchronously pivoted about a common axis by a tilt angle and locked in this form-fitting manner. If the forceps jaw is opened in the pivoted position, the surfaces of the forceps jaw are brought from a parallel position into an expanded position in the manner of an oval funnel, in which they can be pushed over a pipe connection.
  • the invention is therefore based on the object to provide in the above-mentioned prior art within the coupling points highly resilient surfaces, and yet to implement a conversion of the plane in which the press loop is opposite to the transfer tool and the drive unit, without a high wear in purchase to have to take.
  • the solution of the object is achieved according to the invention in that the change in the angular position of the press loop relative to the transfer tongs by implementing the press loop with open transfer tongs feasible, while the closing and pressing movement of the press loop is blocked by at least one locking device, which is associated with the coupling elements.
  • the object is achieved to the full extent, namely to implement a conversion of the plane in which the press loop is located, with respect to the transmission pliers and the drive unit, without having to accept a high degree of wear.
  • the previously selected angular position of the press sling with respect to the transfer tongs is maintained, so that only those friction occur due to the closing movement arise, but not by lateral forces this.
  • FIG. 1 and 2 is a transfer tool 1 with two double-armed caliper levers 2 and 3 shown, which are mounted by means of two bolts 4 between two T-shaped tabs 5, which can be fixed by means of holes 6 to a known and not shown here drive unit.
  • a drive unit has, by way of example, two rollers which can be pushed by means of a piston rod between two control surfaces 7 at the here free ends of the forceps levers 2 and 3.
  • This is also known.
  • a pair of pliers with a toggle lever system can be used which is suitably connected to the ends of the pliers levers 2 and 3 projecting downwards in the figures.
  • the holes 6 can also be omitted.
  • a press loop 8 is connected or connected, which has at least two members 9 which can be wrapped around a workpiece 10 such as a pipe or pipe section.
  • the press loop 8 which may also consist of three, four or more links, has at least one hinge 11 which allows mobility only in a plane defining the pressing direction (s) on the workpiece 10, and an opening portion 12 for the insertion of the workpieces 10 or the laying around of the press sling 8 to these workpieces 10th
  • the essence of the invention is concerned with the coupling elements K1 on the caliper levers 2 and 3 of the transfer tool 1 and the coupling elements K2 on the presser sling 8, which form a kind of coupling. But it is ensured by a positive connection between the coupling elements K1 and K2 that the levels of press loop 8 and transfer tongs 1 not twisted without separation of the coupling elements K1 and K2, but can be repositioned relative to each other only after such a separation, so that within the Reconnected coupling elements K1 / K2 during pressing no friction by a pivoting movement of the two levels occurs, as is the case in the prior art.
  • the transfer tool 1 is provided with two opposing pressure bodies 13 as coupling elements K1, which have coupling surfaces 14 and 15 on their free outer circumference.
  • the coupling surfaces 14 consist of an integer pair of circumferentially closed identical cylindrical surfaces whose intersecting lines 14a at least approximately in a spherical surface, analogous to sections of the meridians of the globe ( FIG. 3 ).
  • the coupling surface 15 is to a certain extent the pole cap of this system, but preferably has a larger radius than that of the clutch surfaces 14 FIGS. 3 to 6 explained in more detail.
  • the coupling elements K2 can be paired on both sides of the opening region 12 on the outer sides of the links 9 of the press sling 8. These have cavities 16 which have two mutually parallel coupling surfaces 16a as wall surfaces and a coupling surface 16b bridging these coupling surfaces 16a as the base surface. Further details will be given by the FIGS. 3 to 6 explained in more detail.
  • a recess 9a is provided in each member 9, in each of which one end of the joint 11, leaving a sufficient pivot angle can be inserted around the cylinder axis.
  • the larger recess 9b corresponds to a partial circumference of the pressing surface on the workpiece 10 and has a corresponding pressing contour.
  • the coupling elements K1 and their pressure body 13 each have a cylindrical extension 13a with a diametrical bore 13b and are thus fixed in bores 2a and 3a in the gun levers 2 and 3 axially and against rotation ( FIGS. 7 and 8 ).
  • the arrangement of the coupling surfaces 14 and 15 is coaxial with a common axis "A".
  • the coupling surface 16b is a conical surface
  • the contact takes place with her on a circle whose diameter by the choice of the opening angle of the coupling surface 16b on the one hand and the radius of the spherical coupling surface 15 on the other hand can be optimized.
  • a gradual change in the angular position of the press loop 8 and transfer tool 1 is thereby possible only in a position in which the pressure body 13 are pulled out of the press loop, as for example in FIG. 1 is shown. This is done manually by compressing the ends with the control surfaces 7 and against the force of a spreading spring 17 (FIG. FIGS. 7 and 8 )
  • FIGS. 9 to 11 show the following:
  • FIG. 9 are the transfer tong 1 and the press loop 8 in a common plane.
  • the press loop 8 After separation of all coupling surfaces according to FIG. 1 can the press loop 8 corresponding to the fineness of the surface division of the clutch surfaces 14 gradually implement, for example, in the positions according to the Figures 10 or 11 ,
  • FIGS. 12 to 19 explain the second embodiment, wherein the same reference numerals are used for the same parts as before or parts with the same function.
  • the pliers levers 2 and 3 also have here coupling elements K1, which, however, are constructed differently and each consist of a hollow nipple 18 in which a spherical segment 19 is movably mounted with a flat coupling surface 19a.
  • the ball segment 19 is larger than a hemisphere and held by the edge of the nipple 18.
  • the coupling elements K2 of the members 21 are based on the FIGS. 14 to 16 explained in more detail.
  • FIG. 14 is the lower portion of the member 21 along the plane EE in FIG. 15 cut.
  • a circular coupling surface 22 which is half of crenellated projections 23 with wedge-shaped cross sections is surrounded. Between these projections are parallel-walled spaces 24 whose width is adapted to the diameter of the projections 20.
  • FIGS. 17 to 19 show the interaction of transmission tongs 1 and press sling 8:
  • the FIG. 17 shows a section through a crimping device FIG. 13 Immediately before the pressing process, that is to say, when the workpiece 10 is already in force-free engagement.
  • the ball segment 19 is twisted and already lies with its coupling surface 19a flat on the coupling surface 22.
  • a projection 20 of the transfer tong 1 protrudes between two of the projections 23 of the associated member 21 of the press loop 8.
  • the FIG. 18 shows the possible end position after the pressing process and the FIG. 19 a perspective view of the pressing device in a position according to FIG. 17 ,
  • the second embodiment is ensured by the described form fit between the coupling elements K1 and K2 that the levels of press loop 8 and transfer tongs 1 not twisted without separation of the coupling elements K1 and K2, but can be repositioned relative to each other only after such a separation, so that within the rejoined coupling elements K1 / K2 during pressing no friction due to a pivoting movement of the two planes occurs, as is the case in the prior art.
  • the blocking devices consist of the cylindrical surfaces 14 with the edges formed by the intersection lines 14a on the pressure body 13 in conjunction with the distance "d" of the parallel lateral coupling surfaces 16a in the cavity 16.
  • the locking means consist of the pin-shaped projections 20 adjacent to the nipples 18 in connection with the crenellated projections 23 and their interstices 24 on a partial circumference of the coupling surfaces 22nd

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Automatic Assembly (AREA)
  • Clamps And Clips (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The device has a two-limbed pressing loop (8) with flexibly interconnected limbs (9) and an opening area (12) for insertion of workpieces (10). Two-fold double-armed transfer gripper (1) connects the loop with a drive unit, where coupling units (K1, K2) are arranged on each side of the opening area between the loop and the gripper. The angularity of the loop is changed relative to the gripper by moving the loop with the opened gripper, and a locking- and pressing movement of the loop is blocked by a blocking device. The blocking device is assigned to the coupling units.

Description

Die Erfindung betrifft eine Verpressvorrichtung für rohrförmige Werkstücke mit einer mindestens zweigliedrigen Pressschlinge, deren Glieder gelenkig miteinander verbunden sind und die einen öffnungsbereich für das Einführen der Werkstücke aufweist, und mit einer zweifach doppelarmigen Übertragungszange für die Verbindung der Pressschlinge mit einer Antriebseinheit, wobei zwischen der Pressschlinge und der übertragungszange auf jeder Seite des öffnungsbereichs Kopplungselemente angeordnet sind.The invention relates to a pressing device for tubular workpieces with a at least two-part press loop whose members are hinged together and having an opening region for the insertion of the workpieces, and with a two-double transfer wrench for the connection of the press loop with a drive unit, wherein between the press loop and the transfer tong are arranged on each side of the opening area coupling elements.

Durch das DE 297 21 759 U1 ist es bekannt, zwischen den freien Enden der Pressschlinge und der Übertragungszange Paarungen von Zylinderflächen vorzusehen, durch die das Zusammenziehen der Pressschlinge mittels der Übertragungszange ermöglicht wird. Diese Ausbildung der Kupplungsstellen ist zwar hoch belastbar, jedoch kann dadurch die Ebene, in der die Pressschlinge liegt, nicht gegenüber der übertragungszange und der Antriebseinheit verschwenkt werden, die infolgedessen immer senkrecht zur Werkstückachse ausgerichtet sind. Dies kann zu Schwierigkeiten bei Arbeiten unter beengten Raumverhältnissen führen.By the DE 297 21 759 U1 It is known to provide between the free ends of the press sling and the transfer tool pairings of cylindrical surfaces through which the contraction of the press sling is made possible by means of the transfer tool. Although this training of the coupling points is highly resilient, however, it can not be pivoted relative to the transfer tong and the drive unit, the plane in which the press loop is located, which are consequently always aligned perpendicular to the workpiece axis. This can lead to difficulties when working in confined spaces.

Durch die EP 1 201 371 B1 und die entsprechende DE 20018321 U ist es bekannt, solche Kupplungsstellen durch paarungsfähige Kugelflächen zu ersetzen, um die Ebene, in der die Pressschlinge liegt, gegenüber der Übertragungszange und der Antriebseinheit verschwenkbar zu machen. Diese Reibungspaarung führt jedoch bei Punktberührungen beim Betrieb zu sehr hohen Flächenbelastungen, die bei Schwenkbewegungen der Antriebseinheit unter Belastung einen stärkeren Verschleiss zur Folge haben. Hierbei muss man sich vor Augen halten, dass die Pressschlinge beim Zuziehen eine radiale Ausrichtung ihrer Ebene zur Rohrachse vornimmt und dass auch die Bedienungsperson Schwenkbewegungen der Antriebseinheit ausführen kann. Beim Verpressvorgang steigt die Kraft innerhalb der Kupplungsstellen von Null bis zu einem sehr hohen Wert, und Reibungsvorgänge sind bis zu dem Zweitpunkt möglich, in dem die Reibungskraft die äusseren Kräfte überwiegt.By the EP 1 201 371 B1 and the corresponding one DE 20018321 U It is known to replace such coupling points by mating spherical surfaces to make the plane in which the press loop is opposite to the transfer tool and the drive unit pivotable. However, this friction pairing leads to very high surface loads during point contact during operation, which result in greater wear under pivotal movements of the drive unit under load. It should be remembered that the press sling makes a radial alignment of its plane to the pipe axis when pulling and that the operator can perform pivotal movements of the drive unit. In the crimping process, the force within the coupling points increases from zero to a very high value, and frictional operations are possible up to the second point where the frictional force outweighs the external forces.

Durch die WO 03/106111 A1 ist es gleichfalls bekannt, die Ebene von Pressschlingen für Rohrverpressungen dadurch in einer doppelarmigen Presszange verschwenkbar zu machen, dass jeweils zwei Lagerflächen mit je einer ersten Schwenkachse mindestens eine zweite Schwenkachse zugeordnet wurde, die zusammen je eine Art Kardangelenk bilden. Dies soll dazu dienen, die Kontaktflächen zu vergrössern. Hierbei ist es von Bedeutung, dass Pressschlingen solche auswechselbaren Elemente sind, deren Glieder durch eigene Zylindergelenke miteinander verbunden sind, so dass alle Glieder in einer gemeinsamen Ebene fixiert und bewegbar sind. Das Einfügen von Werkstücken ist also nur durch Entkopplung der Gelenkverbindungen zwischen Pressschlinge und Presszange möglich. Das Gleiche gilt für den Fall des Auswechselns der Pressschlingen. Diese Gelenkverbindungen besitzen jedenfalls keine Arretiervorrichtungen und können daher während des Pressens unter Belastung durch die Presskräfte gegeneinander verschwenkt werden.By the WO 03/106111 A1 It is also known to make the plane of press loops for pipe grooving in a two-armed pressing tongs so that in each case two bearing surfaces, each having a first pivot axis has been assigned at least a second pivot axis, which each form a kind of universal joint. This is to serve to enlarge the contact surfaces. It is important that pressing loops are such interchangeable elements whose members are connected by their own cylinder joints, so that all members are fixed in a common plane and movable. The insertion of workpieces is therefore possible only by decoupling the joints between press loop and pressing tongs. The same applies to the case of replacing the press slings. Anyway, these articulated joints have no locking devices and can therefore be pivoted against each other during pressing by the pressing forces.

Von Presswerkzeugen mit Pressschlingen unterscheiden sich solche Werkzeuge, bei denen die Verpressung mittels Zangenbacken mit starren Pressflächen in einem Zangenmaul erfolgt, wobei sich die Pressflächen - zum Aufstecken auf die Rohrverbindung - um Achsen schwenken lassen, die von dem Zangenmaul abgelegen sind. Es wird in der EP 1 559 513 A2 unter [0009] ausdrücklich darauf hingewiesen, dass das Werkzeug ohne eine Pressschlinge, d.h. ohne ein Gelenk vor dem Pressenmaul, auskommen soll, womit der Fachmann von einer Kombination mit Pressschlingen weggeführt wird.From pressing tools with press loops, such tools differ in which the pressing takes place by means of pliers jaws with rigid pressing surfaces in a forceps jaw, with the pressing surfaces - can be pivoted about axes, which are remote from the forceps jaw - for attachment to the pipe joint. It will be in the EP 1 559 513 A2 expressly pointed out that the tool without a press loop, ie without a joint in front of the press mouth to get along, bringing the skilled person is led away by a combination with press loops.

Durch die EP 1 559 513 A2 ist nämlich ein Presswerkzeug mit einer doppelarmigen Presszange bekannt, deren eine Enden ein Pressenmaul umschliessen, das durch eine Spreizbewegung der anderen Enden geschlossen werden kann. Die das einseitig zu öffnende Pressenmaul umschliessenden Enden liegen dabei in geschlossenem Zustand des Zangenmauls in einer Ebene und können um eine gemeinsame Achse synchron um einen Kippwinkel verschwenkt und in diesem formschlüssig verriegelt werden. Wird das Zangenmaul in der verschwenkten Stellung geöffnet, so werden die Flächen des Zangenmauls aus einer Parallelstellung in eine Spreizstellung nach Art eines ovalen Trichters gebracht, in der sie über eine Rohrverbindung geschoben werden können. Dies hat aber zur Folge, dass die Parallelstellung erst wieder gegen Ende der Schliess- und Pressbewegung erreicht wird, so dass während der Pressbewegung erhebliche Axialkömponenten der radialen Presskräfte auf den Pressvorgang und die Rohrverbindung einwirken. Es wird ausdrücklich darauf hingewiesen, dass das Werkzeug ohne eine Pressschlinge, d.h. ohne ein Gelenk vor dem Pressenmaul, auskommen soll.By the EP 1 559 513 A2 Namely, a pressing tool with a double-armed pressing pliers is known, one end of which surround a press mouth, which can be closed by a spreading movement of the other ends. The unilaterally opening press mouth enclosing ends lie in the closed state of the forceps jaw in a plane and can be synchronously pivoted about a common axis by a tilt angle and locked in this form-fitting manner. If the forceps jaw is opened in the pivoted position, the surfaces of the forceps jaw are brought from a parallel position into an expanded position in the manner of an oval funnel, in which they can be pushed over a pipe connection. However, this has the consequence that the parallel position is only reached again towards the end of the closing and pressing movement, so that during the pressing movement considerable axial components of the radial pressing forces act on the pressing process and the pipe connection. It is expressly pointed out that the tool without a press sling, ie without a joint in front of the press mouth to get along.

Der Erfindung liegt daher die Aufgabe zugrunde, bei dem eingangs angegebenen Stand der Technik innerhalb der Kupplungsstellen hoch belastbare Flächen vorzusehen und dennoch ein Umsetzen der Ebene, in der die Pressschlinge liegt, gegenüber der Übertragungszange und der Antriebseinheit zu ermöglichen, ohne einen hohen Verschleiss in Kauf nehmen zu müssen.The invention is therefore based on the object to provide in the above-mentioned prior art within the coupling points highly resilient surfaces, and yet to implement a conversion of the plane in which the press loop is opposite to the transfer tool and the drive unit, without a high wear in purchase to have to take.

Die Lösung der gestellten Aufgabe erfolgt erfindungsgemäss dadurch, dass die Veränderung der Winkelstellung der Pressschlinge relativ zur Übertragungszange durch Umsetzen der Pressschlinge bei geöffneter Übertragungszange durchführbar, während der Schliess- und Verpressbewegung der Pressschlinge aber durch mindestens eine Sperreinrichtung blockiert ist, die den Kopplungselementen zugeordnet ist.The solution of the object is achieved according to the invention in that the change in the angular position of the press loop relative to the transfer tongs by implementing the press loop with open transfer tongs feasible, while the closing and pressing movement of the press loop is blocked by at least one locking device, which is associated with the coupling elements.

Dadurch wird die gestellte Aufgabe in vollem Umfange gelöst, nämlich ein Umsetzen der Ebene, in der die Pressschlinge liegt, gegenüber der übertragungszange und der Antriebseinheit zu ermöglichen, ohne einen hohen Verschleiss in Kauf nehmen zu müssen. Während des Schliessens der Pressschlinge und des Verpressvorgangs bleibt die vorher ausgewählte Winkelstellung der Pressschlinge gegenüber der Übertragungszange erhalten, so dass nur solche Reibungen auftreten, die durch die Schliessbewegung entstehen, nicht aber durch Querkräfte hierzu.As a result, the object is achieved to the full extent, namely to implement a conversion of the plane in which the press loop is located, with respect to the transmission pliers and the drive unit, without having to accept a high degree of wear. During the closing of the press sling and the pressing process, the previously selected angular position of the press sling with respect to the transfer tongs is maintained, so that only those friction occur due to the closing movement arise, but not by lateral forces this.

Es ist im Zuge weiterer Ausgestaltungen der Erfindung besonders vorteilhaft, wenn - entweder einzeln oder in Kombination :

  • * die Kopplungselemente der Pressschlinge je einen Hohlraum aufweisen, der zwei parallele seitliche Kupplungsflächen und eine diese überbrückende Kupplungsfläche als Grundfläche aufweist, und wenn die Kopplungselemente der Übertragungszange je einen Druckkörper besitzen, der von einer auf dem Umfang geschlossenen ganzzahligen Schaar von identischen zylindrischen Kupplungsflächen begrenzt ist, deren Verschneidungslinien wenigstens weitgehend in einer Kugelfläche liegen, wobei der diametrale Abstand dieser Kupplungsflächen derart gewählt ist, dass diese die seitlichen Kupplungsflächen des Hohlraums in der Pressschlinge berühren,
  • * die zylindrischen Kupplungsflächen des Druckkörpers ein kugelähnliches Polygon umschreiben und eine kugelförmige Polkappe als weitere Kupplungsfläche umschliessen, die beim Schliessen der Übertragungszange auf die Kupplungsfläche im Grunde des Hohlraums in der Pressschlinge aufsetzbar ist,
  • * zwei Druckkörper gegeneinander gerichtet in die Enden der übertragungszange eingesetzt sind,
  • * die Kupplungsflächen im Grund der Hohlräume in der Pressschlinge eben ausgebildet sind,
  • * die Kupplungsflächen im Grund der Hohlräume in der Pressschlinge kegelförmig ausgebildet sind,
  • * die Anzahl der zylindrischen Kupplungsflächen der Druckkörper zwischen 6 und 16 beträgt,
  • * die Kupplungsflächen der Kopplungselemente der Pressschlingen auf einem Teilumfang von zinnenförmigen Vorsprüngen mit Zwischenräumen umgeben sind, und wenn der Übertragungszange mindestens ein Vorsprung zugeordnet ist, der beim Zusammenfügen von Pressschlinge und Übertragungszange in jeweils einen der Zwischenräume der zinnenförmigen Vorsprünge der Pressschlinge einführbar ist,
  • * die Kupplungsflächen der Pressschlinge eben ausgebildet sind und wenn die zinnenförmigen Vorsprünge imaginäre Achsen besitzen, die senkrecht zu diesen Kupplungsflächen ausgerichtet sind,
  • * die Querschnitte der zinnenförmigen Vorsprünge - parallel zur zugehörigen Kupplungsfläche gesehen - keilförmig sind,
  • * die Zwischenräume zwischen den zinnenförmigen Vorsprüngen beidseitig durch parallele Wandflächen begrenzt sind,
  • * die Zwischenräume zwischen den zinnenförmigen Vorsprüngen auf einem Umfang von maximal 180 Grad um die zugehörige Kupplungsfläche verteilt angeordnet sind,
  • * die freien Enden der zinnenförmigen Vorsprünge in einer Teilkugelfläche liegen.
  • * die Vorsprünge der übertragungszange als Zylinderstifte ausgebildet sind,
  • * die Kupplungsflächen der Übertragungszange ebene Flächen von Kugelsegmenten sind, deren jeweilige Kugelfläche schwenkbar in einem Nippel gelagert ist, der in dem jeweiligen Zangenhebel der Übertragungszange befestigt ist, und/oder, wenn
  • * der Nippel eine Schraubachse aufweist, parallel zu welcher der zylindrische Vorsprung verläuft.
It is particularly advantageous in the course of further embodiments of the invention if, either individually or in combination:
  • * The coupling elements of the presser sling each have a cavity having two parallel lateral coupling surfaces and a bridging coupling surface as a base, and when the coupling elements of the transfer tool each have a pressure body which is bounded by a circumferentially closed integer Schaar of identical cylindrical coupling surfaces whose intersecting lines are at least substantially in a spherical surface, wherein the diametrical distance of these coupling surfaces is chosen so that they touch the lateral coupling surfaces of the cavity in the press sling,
  • * The cylindrical coupling surfaces of the pressure hull rewrite a ball-like polygon and enclose a spherical pole cap as a further coupling surface, which can be placed on the coupling surface at the bottom of the cavity in the press loop when the transmission tongs are closed.
  • * two pressure bodies directed against each other are inserted into the ends of the transmission pliers,
  • * the coupling surfaces are flat in the bottom of the cavities in the press loop,
  • * the coupling surfaces in the bottom of the cavities in the press loop are tapered,
  • * the number of cylindrical coupling surfaces of the pressure bodies is between 6 and 16,
  • * The coupling surfaces of the coupling elements of the press slings on a partial circumference of crenellated protrusions with gaps are surrounded, and when the transfer tool is associated with at least one projection which is insertable in each case one of the interstices of the crenellated projections of the press sling when joining press swing and transfer tool,
  • * the coupling surfaces of the press loop are flat and if the crenellated projections have imaginary axes aligned perpendicular to these coupling surfaces,
  • * the cross-sections of the crenellated projections - seen parallel to the associated coupling surface - are wedge-shaped,
  • * the spaces between the crenellated protrusions are bounded on both sides by parallel wall surfaces,
  • * the spaces between the crenellated projections are arranged distributed on a circumference of a maximum of 180 degrees about the associated coupling surface,
  • * lie the free ends of the crenellated projections in a part of the ball surface.
  • * the projections of the transmission pliers are designed as cylindrical pins,
  • * The coupling surfaces of the transfer tool are flat surfaces of spherical segments whose respective spherical surface is pivotally mounted in a nipple, which is fixed in the respective pliers lever of the transfer tool, and / or, if
  • * The nipple has a screw axis parallel to which the cylindrical projection extends.

Zwei Ausführungsbeispiele des Erfindungsgegenstandes und deren Wirkungsweisen und weitere Vorteile werden nachfolgend anhand der Figuren 1 bis 19 näher erläutert.Two embodiments of the subject invention and their modes of action and other advantages will be described below with reference to the FIGS. 1 to 19 explained in more detail.

Es zeigen:Show it:

Figur 1FIG. 1
eine perspektivische Explosionsdarstellung eines ersten Ausführungsbeispiels vor dem Einsetzen der Pressschlinge in die Übertragungszange,an exploded perspective view of a first embodiment prior to insertion of the press sling in the transfer tool,
Figur 2FIG. 2
die Stellung der Teile von Figur 1 nach der Ausführung eines Pressvorgangs, ,the position of the parts of FIG. 1 after the execution of a pressing process,
Figur 3FIG. 3
eine perspektivische Explosionsdarstellung funktionswesentlicher Teile aus Figur 1,an exploded perspective view of functionally essential parts FIG. 1 .
Figur 4FIG. 4
die Teile der Figur 3 nach dem gegenseitigen Eingriff,the parts of FIG. 3 after the mutual intervention,
Figur 5FIG. 5
einen Längsschnitt durch den Gegenstand von Figur 4,a longitudinal section through the subject of FIG. 4 .
Figur 6FIG. 6
eine Unteransicht des Gegenstandes nach Figur 5,a bottom view of the object after FIG. 5 .
Figur 7FIG. 7
einen Schnitt durch eine Verpressvorrichtung vor dem Verpressvorgang,a section through a pressing device before the pressing process,
Figur 8FIG. 8
einen Schnitt durch eine Verpressvorrichtung nach dem Verpressvorgang,a section through a pressing device after the pressing process,
Figur 9FIG. 9
eine perspektivische Darstellung der Verpressvorrichtung nach Figur 7,a perspective view of the pressing device according to FIG. 7 .
Figur 10FIG. 10
die Vorrichtung nach Figur 9 mit einer durch Umstecken geänderten ersten Winkelstellung von Pressschlinge und Übertragungszange,the device after FIG. 9 with a changed by repositioning first angular position of press loop and transfer forceps,
Figur 11FIG. 11
die Vorrichtung nach Figur 9 mit einer durch Umstecken stärker geänderten Winkelstellung von Pressschlinge und Übertragungszange,the device after FIG. 9 with an angular position of the press sling and the transfer forceps, which is changed to a greater extent by repositioning,
Figur 12FIG. 12
eine perspektivische Explosionsdarstellung eines zweiten Ausführungsbeispiels vor dem Einsetzen der Pressschlinge in die Übertragungszange,an exploded perspective view of a second embodiment prior to insertion of the press sling in the transfer tool,
Figur 13FIG. 13
die Stellung der Teile von Figur 12 nach der Ausführung eines Pressvorgangs, ,the position of the parts of FIG. 12 after the execution of a pressing process,
Figur 14FIG. 14
eine teilweise geschnittene Seitenansicht eines Gliedes der Pressschlinge im öffnungsbereich der Presschlinge nach Figur 12,a partially sectioned side view of a member of the press loop in the opening area of the press loop after FIG. 12 .
Figur 15FIG. 15
eine Draufsicht auf den Gegenstand nach Figur 14,a plan view of the object FIG. 14 .
Figur 16FIG. 16
eine Unteransicht des Gegenstandes nach Figur 15,a bottom view of the object after FIG. 15 .
Figur 17FIG. 17
einen Schnitt durch eine Verpressvorrichtung nach Figur 13 vor dem Verpressvorgang,a section through a crimping device after FIG. 13 before the pressing process,
Figur 18FIG. 18
einen Schnitt analog Figur 17 nach dem Verpressvorgang, unda section analog FIG. 17 after the pressing process, and
Figur 19FIG. 19
eine perspektivische Darstellung der Verpressvorrichtung in einer Stellung nach nach Figur 17,a perspective view of the pressing device in a position according to FIG. 17 .

In den Figuren 1 und 2 ist eine Übertragungszange 1 mit zwei doppelarmigen Zangenhebeln 2 und 3 gezeigt, die mittels zweier Bolzen 4 zwischen zwei T-förmigen Laschen 5 gelagert sind, die mittels Bohrungen 6 an einer bekannten und hier nicht gezeigten Antriebseinheit befestigt werden kann. Eine solche Antriebseinheit besitzt beispielhaft zwei Walzen, die mittels einer Kolbenstange zwischen zwei Steuerflächen 7 an den hier freien Enden der Zangenhebel 2 und 3 geschoben werden können. Auch dies ist bekannt. Als Antriebseinheit kann allerdings auch eine Zange mit einem Kniehebelsystem verwendet werden, die in geeigneter Weise mit den in den Figuren nach unten ragenden Enden der Zangenhebel 2 und 3 verbunden ist. In diesem Fall können die Bohrungen 6 auch weggelassen werden.In the Figures 1 and 2 is a transfer tool 1 with two double-armed caliper levers 2 and 3 shown, which are mounted by means of two bolts 4 between two T-shaped tabs 5, which can be fixed by means of holes 6 to a known and not shown here drive unit. Such a drive unit has, by way of example, two rollers which can be pushed by means of a piston rod between two control surfaces 7 at the here free ends of the forceps levers 2 and 3. This is also known. As a drive unit, however, a pair of pliers with a toggle lever system can be used which is suitably connected to the ends of the pliers levers 2 and 3 projecting downwards in the figures. In this case, the holes 6 can also be omitted.

Mit dieser Übertragungszange 1 ist eine Pressschlinge 8 verbindbar bzw. verbunden, die mindestens zwei Glieder 9 besitzt, die um ein Werkstück 10 wie beispielsweise ein Rohr oder Rohrabschnitt herumgelegt werden können. Zu diesem Zweck besitzt die Pressschlinge 8, die auch aus drei, vier und mehr Gliedern bestehen kann, mindestens ein Gelenk 11, das eine Beweglichkeit nur in einer Ebene zulässt, die die Pressrichtung(en) am Werkstück 10 definiert, sowie einen öffnungsbereich 12 für das Einführen der Werkstücke 10 bzw. das Herumlegen der Pressschlinge 8 um diese Werkstücke 10.With this transfer tool 1, a press loop 8 is connected or connected, which has at least two members 9 which can be wrapped around a workpiece 10 such as a pipe or pipe section. For this purpose, the press loop 8, which may also consist of three, four or more links, has at least one hinge 11 which allows mobility only in a plane defining the pressing direction (s) on the workpiece 10, and an opening portion 12 for the insertion of the workpieces 10 or the laying around of the press sling 8 to these workpieces 10th

Der Kern der Erfindung befasst sich mit den Kopplungselementen K1 an den Zangenhebeln 2 und 3 der Übertragungszange 1 und den Kopplungselementen K2 an der Pressschlinge 8, die eine Art Kupplung bilden. Dabei ist aber durch einen Formschluss zwischen den Kopplungselementen K1 und K2 dafür gesorgt, dass die Ebenen von Pressschlinge 8 und übertragungszange 1 nicht ohne Trennung der Kopplungselemente K1 und K2 verdreht, sondern nur nach einer solchen Trennung relativ zueinander umgesteckt werden können, so dass innerhalb der wieder verbundenen Kopplungselemente K1/K2 beim Verpressen keine Reibung durch eine Schwenkbewegung der beiden Ebenen auftritt, wie dies beim Stande der Technik der Fall ist.The essence of the invention is concerned with the coupling elements K1 on the caliper levers 2 and 3 of the transfer tool 1 and the coupling elements K2 on the presser sling 8, which form a kind of coupling. But it is ensured by a positive connection between the coupling elements K1 and K2 that the levels of press loop 8 and transfer tongs 1 not twisted without separation of the coupling elements K1 and K2, but can be repositioned relative to each other only after such a separation, so that within the Reconnected coupling elements K1 / K2 during pressing no friction by a pivoting movement of the two levels occurs, as is the case in the prior art.

Zu diesem Zweck ist die Übertragungszange 1 mit zwei gegenüber liegenden Druckkörpern 13 als Kopplungselemente K1 versehen, die auf ihrem freien Aussenumfang Kupplungsflächen 14 und 15 besitzen. Die Kupplungsflächen 14 bestehen aus einer ganzzahligen Schaar von auf dem Umfang geschlossenen identischen Zylinderflächen, deren Verschneidungslinien 14a zumindest angenähert in einer Kugelfläche liegen, analog von Teilabschnitten der Meridiane der Erdkugel (Figur 3). Die Kupplungsfläche 15 ist gewissermassen die Polkappe dieses Systems, hat aber vorzugsweise einen grösseren Radius als derjenige der Kupplungsflächen 14. Weitere Einzelheiten werden anhand der Figuren 3 bis 6 näher erläutert.For this purpose, the transfer tool 1 is provided with two opposing pressure bodies 13 as coupling elements K1, which have coupling surfaces 14 and 15 on their free outer circumference. The coupling surfaces 14 consist of an integer pair of circumferentially closed identical cylindrical surfaces whose intersecting lines 14a at least approximately in a spherical surface, analogous to sections of the meridians of the globe ( FIG. 3 ). The coupling surface 15 is to a certain extent the pole cap of this system, but preferably has a larger radius than that of the clutch surfaces 14 FIGS. 3 to 6 explained in more detail.

Paarungsfähig hierzu sind beiderseits des öffnungsbereichs 12 auf den Aussenseiten der Glieder 9 der Pressschlinge 8 die Kopplungselemente K2. Diese besitzen Hohlräume 16, die zwei gegenüber liegende zueinander parallele Kupplungsflächen 16a als Wandflächen und eine diese Kupplungsflächen 16a überbrückende Kupplungsfläche 16b als Grundfläche besitzen. Weitere Einzelheiten werden anhand der Figuren 3 bis 6 näher erläutert.For this purpose, the coupling elements K2 can be paired on both sides of the opening region 12 on the outer sides of the links 9 of the press sling 8. These have cavities 16 which have two mutually parallel coupling surfaces 16a as wall surfaces and a coupling surface 16b bridging these coupling surfaces 16a as the base surface. Further details will be given by the FIGS. 3 to 6 explained in more detail.

Aus den Figuren 3 bis 6 geht - in der Zusammenschau und unter Beibehaltung der bisherigen Bezifferung - folgendes hervor: Für das Gelenk 11, das aus zwei Teilzylindern und einem Verbindungssteg besteht, ist in jedem Glied 9 eine Ausnehmung 9a vorgesehen, in die jeweils ein Ende des Gelenks 11 unter Belassung eines ausreichenden Schwenkwinkels um die Zylinderachse einschiebbar ist. Die grössere Ausnehmung 9b entspricht einem Teilumfang der Pressfläche am Werkstück 10 und besitzt eine entsprechende Presskontur.From the FIGS. 3 to 6 For the joint 11, which consists of two sub-cylinders and a connecting web, a recess 9a is provided in each member 9, in each of which one end of the joint 11, leaving a sufficient pivot angle can be inserted around the cylinder axis. The larger recess 9b corresponds to a partial circumference of the pressing surface on the workpiece 10 and has a corresponding pressing contour.

Die Kopplungselemente K1 bzw. deren Druckkörper 13 besitzen je einen zylindrischen Fortsatz 13a mit einer diametralen Bohrung 13b und sind damit in Bohrungen 2a und 3a in den Zangenhebeln 2 und 3 axial und verdrehsicher festgelegt (Figuren 7 und 8). Auch die Anordnung der Kupplungsflächen 14 und 15 ist koaxial zu einer gemeinsamen Achse "A".The coupling elements K1 and their pressure body 13 each have a cylindrical extension 13a with a diametrical bore 13b and are thus fixed in bores 2a and 3a in the gun levers 2 and 3 axially and against rotation ( FIGS. 7 and 8 ). The arrangement of the coupling surfaces 14 and 15 is coaxial with a common axis "A".

Aus Figur 6 geht noch hervor, dass jeweils zwei diametral gegenüber liegende zylindrische Kupplungsflächen einen solchen diametralen Abstand "d" haben, dass sie die parallelen Kupplungsflächen 16a in der Ausnehmung 16 des jeweiligen Gliedes 9 - unter Einhaltung üblicher Toleranzen - gerade berühren. Dadurch lassen sich die Glieder 9 der Pressschlinge 8 nur in einer Richtung verschwenken, nämlich zum öffnen und Schliessen der Pressschlinge 8, wobei die Kupplungsflächen 14 und 16a nicht sonderlich belastet werden, sondern nur die Kupplungsflächen 15 und 16b.Out FIG. 6 It is also clear that two diametrically opposed cylindrical coupling surfaces each have such a diametrical distance "d" that they just touch the parallel coupling surfaces 16a in the recess 16 of the respective member 9, while observing customary tolerances. Thus, the members 9 of the press loop 8 can be pivoted in one direction only, namely to open and close the press loop 8, wherein the coupling surfaces 14 and 16a are not particularly stressed, but only the coupling surfaces 15 and 16b.

Wenn dabei, wie in Figur 5 gezeigt, die Kupplungsfläche 16b eine Kegelfläche ist, dann findet die Berührung mit ihr auf einem Kreis statt, dessen Durchmesser durch die Wahl des öffnungswinkels der Kupplungsfläche 16b einerseits und des Radius der kugelförmigen Kupplungsfläche 15 andererseits optimierbar ist. Eine stufenweise Änderung der Winkelstellung von Pressschlinge 8 und Übertragungszange 1 ist dadurch nur in einer Stellung möglich, in der die Druckkörper 13 aus der Pressschlinge herausgezogen sind, wie dies z.B. in Figur 1 dargestellt ist. Dies geschieht manuell durch Zusammenpressen der Enden mit den Steuerflächen 7 und gegen die Kraft einer Spreizfeder 17 (Figuren 7 und 8)If doing so, as in FIG. 5 shown, the coupling surface 16b is a conical surface, then the contact takes place with her on a circle whose diameter by the choice of the opening angle of the coupling surface 16b on the one hand and the radius of the spherical coupling surface 15 on the other hand can be optimized. A gradual change in the angular position of the press loop 8 and transfer tool 1 is thereby possible only in a position in which the pressure body 13 are pulled out of the press loop, as for example in FIG. 1 is shown. This is done manually by compressing the ends with the control surfaces 7 and against the force of a spreading spring 17 (FIG. FIGS. 7 and 8 )

Die Figuren 9 bis 11 zeigen folgendes: In Figur 9 liegen die übertragungszange 1 und die Pressschlinge 8 in einer gemeinsamen Ebene. Nach Trennung aller Kupplungsflächen gemäss Figur 1 lässt sich die Pressschlinge 8 entsprechenden der Feinheit der Flächenteilung der Kupplungsflächen 14 stufenweise umsetzen, beispielsweise in die Positionen gemäss den Figuren 10 oder 11.The FIGS. 9 to 11 show the following: In FIG. 9 are the transfer tong 1 and the press loop 8 in a common plane. After separation of all coupling surfaces according to FIG. 1 can the press loop 8 corresponding to the fineness of the surface division of the clutch surfaces 14 gradually implement, for example, in the positions according to the Figures 10 or 11 ,

Die Figuren 12 bis 19 erläutern das zweite Ausführungsbeispiel, wobei für gleiche Teile wie bisher oder Teile mit gleicher Funktion gleiche Bezugszeichen verwendet werden.The FIGS. 12 to 19 explain the second embodiment, wherein the same reference numerals are used for the same parts as before or parts with the same function.

Aus den Figuren 12 und 13 geht folgendes hervor: Die Zangenhebel 2 und 3 besitzen auch hier Kopplungselemente K1, die jedoch anders aufgebaut sind und jeweils aus einem hohlen Nippel 18 bestehen, in dem ein Kugelsegment 19 mit einer ebenen Kupplungsfläche 19a beweglich gelagert ist. Das Kugelsegment 19 ist grösser als eine Halbkugel und durch den Rand des Nippels 18 gehalten.From the FIGS. 12 and 13 The following is apparent: The pliers levers 2 and 3 also have here coupling elements K1, which, however, are constructed differently and each consist of a hollow nipple 18 in which a spherical segment 19 is movably mounted with a flat coupling surface 19a. The ball segment 19 is larger than a hemisphere and held by the edge of the nipple 18.

Parallel zur Achse des Nippels 18 und auf dessen Aussenseite befindet sich jeweils ein stiftförmiger Vorsprung 20, auf dessen Funktion nachstehend noch eingegangen wird. Paarungsfähig hierzu sind die Enden der Glieder 21 der Pressschlinge 8 beiderseits des öffnungsbereichs 12Parallel to the axis of the nipple 18 and on the outside thereof is in each case a pin-shaped projection 20, whose function will be discussed below. Mating thereto, the ends of the links 21 of the press sling 8 are on either side of the opening portion 12

Die Kopplungselemente K2 der Glieder 21 werden anhand der Figuren 14 bis 16 näher erläutert. In Figur 14 ist der untere Bereich des Gliedes 21 entlang der Ebene E-E in Figur 15 geschnitten. Im Zentrum des Kopplungselements K2 befindet sich eine kreisförmige Kupplungsfläche 22, die zur Hälfte von zinnenförmigen Vorspüngen 23 mit keilförmigen Querschnitten umgeben ist. Zwischen diesen Vorsprüngen befinden sich parallelwandige Zwischenräume 24, deren Breite dem Durchmesser der Vorsprünge 20 angepasst ist.The coupling elements K2 of the members 21 are based on the FIGS. 14 to 16 explained in more detail. In FIG. 14 is the lower portion of the member 21 along the plane EE in FIG. 15 cut. In the center of the coupling element K2 is a circular coupling surface 22, which is half of crenellated projections 23 with wedge-shaped cross sections is surrounded. Between these projections are parallel-walled spaces 24 whose width is adapted to the diameter of the projections 20.

Die Figuren 17 bis 19 zeigen das Zusammenwirken von übertragungszange 1 und Pressschlinge 8: Die Figur 17 zeigt einen Schnitt durch eine Verpressvorrichtung nach Figur 13 unmittelbar vor dem Verpressvorgang, d.h., bei bereits kräftefrei eingelegtem Werkstück 10. Das Kugelsegment 19 ist verdreht und liegt mit seiner Kupplungsfläche 19a bereits flächig auf der Kupplungsfläche 22 auf. Jeweils ein Vorsprung 20 der übertragungszange 1 ragt dabei zwischen zwei der Vorsprünge 23 des zugehörigen Gliedes 21 der Pressschlinge 8 hinein. Die Figur 18 zeigt die mögliche Endstellung nach dem Verpressvorgang und die Figur 19 eine perspektivische Darstellung der Verpressvorrichtung in einer Stellung nach nach Figur 17.The FIGS. 17 to 19 show the interaction of transmission tongs 1 and press sling 8: The FIG. 17 shows a section through a crimping device FIG. 13 Immediately before the pressing process, that is to say, when the workpiece 10 is already in force-free engagement. The ball segment 19 is twisted and already lies with its coupling surface 19a flat on the coupling surface 22. In each case, a projection 20 of the transfer tong 1 protrudes between two of the projections 23 of the associated member 21 of the press loop 8. The FIG. 18 shows the possible end position after the pressing process and the FIG. 19 a perspective view of the pressing device in a position according to FIG. 17 ,

Auch bei dem zweiten Ausführungsbeispiel ist durch den beschrieben Formschluss zwischen den Kopplungselementen K1 und K2 dafür gesorgt, dass die Ebenen von Pressschlinge 8 und Übertragungszange 1 nicht ohne Trennung der Kopplungselemente K1 und K2 verdreht, sondern nur nach einer solchen Trennung relativ zueinander umgesteckt werden können, so dass innerhalb der wieder verbundenen Kopplungselemente K1/K2 beim Verpressen keine Reibung durch eine Schwenkbewegung der beiden Ebenen auftritt, wie dies beim Stande der Technik der Fall ist.Also in the second embodiment is ensured by the described form fit between the coupling elements K1 and K2 that the levels of press loop 8 and transfer tongs 1 not twisted without separation of the coupling elements K1 and K2, but can be repositioned relative to each other only after such a separation, so that within the rejoined coupling elements K1 / K2 during pressing no friction due to a pivoting movement of the two planes occurs, as is the case in the prior art.

Bei dem Ausführungsbeispiel nach den Figuren 1 bis 11 bestehen die Sperreinrichtungen aus den Zylinderflächen 14 mit den durch die Verschneidungslinien 14a gebildeten Kanten am Druckkörper 13 in Verbindung mit dem Abstand "d" der parallelen seitlichen Kupplungsflächen 16a im Hohlraum 16. Bei dem Ausführungsbeispiel nach den Figuren 12 bis 19 bestehen die Sperreinrichtungen aus den stiftförmigen Vorsprüngen 20 neben den Nippeln 18 in Verbindung mit den zinnenförmigen Vorsprüngen 23 und deren Zwischenräumen 24 auf einem Teilumfang der Kupplungsflächen 22.In the embodiment of the FIGS. 1 to 11 the blocking devices consist of the cylindrical surfaces 14 with the edges formed by the intersection lines 14a on the pressure body 13 in conjunction with the distance "d" of the parallel lateral coupling surfaces 16a in the cavity 16. In the embodiment according to the FIGS. 12 to 19 The locking means consist of the pin-shaped projections 20 adjacent to the nipples 18 in connection with the crenellated projections 23 and their interstices 24 on a partial circumference of the coupling surfaces 22nd

In allen Fällen ist die Veränderung der Winkelstellung der Pressschlinge 8 relativ zur Übertragungszange 1. während des Pressvorgangs durch die beschriebenen Sperreinrichtungen zwischen den bzw. innerhalb der Kopplungselemente(n) K1 und K2 blockiert.In all cases, the change in the angular position of the press loop 8 relative to the transfer tool 1 during the pressing operation by the locking means described between or within the coupling elements (s) K1 and K2 blocked.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Übertragungszangetransfer tongs
22
Zangenhebelcaliper lever
2a2a
Bohrungdrilling
33
Zangenhebelcaliper lever
3a3a
Bohrungdrilling
44
Bolzenbolt
55
Laschentabs
66
Bohrungendrilling
77
Steuerflächencontrol surfaces
88th
Pressschlingepressing loop
99
Gliederlimbs
9a9a
Ausnehmungrecess
9b9b
Ausnehmungrecess
1010
Werkstückworkpiece
1111
Gelenkjoint
1212
öffnungsbereichopening area
1313
Druckkörperpressure vessels
13a13a
Fortsatzextension
13b13b
Bohrungdrilling
1414
Kupplungsflächencoupling surfaces
14a14a
Verschneidungslinienintersection lines
1515
Kupplungsflächencoupling surfaces
1616
Hohlräumecavities
16a16a
Kupplungsflächen (Seitenflächen)Clutch surfaces (side surfaces)
16b16b
Kupplungsflächen (Grundflächen)Coupling surfaces (bases)
1717
Spreizfedersplay
1818
Nippelnipple
1919
Kugelsegmentball segment
19a19a
Kupplungsflächecoupling surface
2020
Vorsprunghead Start
2121
Glied (er)Member (s)
2222
Kupplungsflächecoupling surface
2323
VorspüngeVorspünge
2424
Zwischenräumeinterspaces
AA
Achseaxis
dd
Abstanddistance
E-EE-E
Ebenelevel
K1K1
Kopplungselementecoupling elements
K2K2
Kopplungselementecoupling elements

Claims (16)

  1. Pressing device for tubular workpieces (10), having an at least two-limbed pressing loop (8), the limbs (9, 21) of which are connected to one another in articulated fashion and which has an opening area (12) for insertion of the workpieces (10), and having a two-fold double-armed transfer gripper (1) for connection of the pressing loop (8) to a drive unit, coupling elements (K1, K2) being arranged between the pressing loop (8) and the transfer gripper (1) on each side of the opening area (12), characterised in that the changing of the angular position of the pressing loop (8) relative to the transfer gripper (1) can be effected by moving the pressing loop (8) when the transfer gripper (1) is open, but is blocked during the closing and pressing movement of the pressing loop (8) by at least one blocking device which is assigned to the coupling elements (K1, K2).
  2. Pressing device according to Claim 1, characterised in that the coupling elements (K2) of the pressing loop (8) each have a hollow space (16) which has two parallel lateral coupling surfaces (16a) and a coupling surface (16b), bridging these surfaces, as a bottom surface, and in that the coupling elements (K1) of the transfer gripper (1) each possess a pressure body (13) which is bounded by a circumferentially closed, whole-numbered family of identical cylindrical coupling surfaces (14), the intersecting lines (14a) of which lie at least largely in a spherical surface, the diametrical distance between these coupling surfaces (14) being chosen such that these surfaces touch the lateral coupling surfaces (16a) of the hollow space (16) in the pressing loop (8).
  3. Pressing device according to Claim 2, characterised in that the cylindrical coupling surfaces (14) of the pressure body (13) circumscribe a sphere-like polygon and enclose a spherical polar cap as a further coupling surface (15), which can be placed onto the coupling surface (16b) at the bottom of the hollow space (16) in the pressing loop (8) upon the closing of the transfer gripper (1).
  4. Pressing device according to Claim 2, characterised in that two pressure bodies (13) are inserted, in a manner directed opposite one another, in the ends of the transfer gripper (1).
  5. Pressing device according to Claim 2, characterised in that the coupling surfaces (16b) at the bottom of the hollow spaces (16) in the pressing loop (8) are of plane form.
  6. Pressing device according to Claim 2, characterised in that the coupling surfaces (16b) at the bottom of the hollow spaces (16) in the pressing loop (8) are of conical form.
  7. Pressing device according to Claim 2, characterised in that the number of cylindrical coupling surfaces (14) of the pressure bodies (13) is between 6 and 16.
  8. Pressing device according to Claim 1, characterised in that the coupling surfaces (22) of the coupling elements (K2) of the pressing loops (8) are partially circumferentially surrounded by merlon-shaped projections (23) with intervening spaces (24), and in that the transfer gripper (1) is assigned at least one projection (20) which can be inserted into respectively one of the intervening spaces (24) of the merlon-shaped projections (23) of the pressing loop (8) upon fitting together the pressing loop (8) and the transfer gripper (1).
  9. Pressing device according to Claim 8, characterised in that the coupling surfaces (22) of the pressing loop (8) are of plane form, and in that the merlon-shaped projections (23) possess imaginary axes which are oriented perpendicularly to these coupling surfaces (22).
  10. Pressing device according to Claim 9, characterised in that the cross-sections of the merlon-shaped projections (23) are wedge-shaped when seen parallel to the associated coupling surface (22).
  11. Pressing device according to Claim 8, characterised in that the intervening spaces (24) between the merlon-shaped projections (23) are bounded on both sides by parallel wall surfaces.
  12. Pressing device according to Claim 8, characterised in that the intervening spaces (24) between the merlon-shaped projections (23) are arranged in a manner distributed on a circumference of at most 180 degrees about the associated coupling surface (22).
  13. Pressing device according to Claim 8, characterised in that the free ends of the merlon-shaped projections (23) lie in a partial spherical surface.
  14. Pressing device according to Claim 8, characterised in that the projections (20) of the transfer gripper (1) are formed as cylindrical pins.
  15. Pressing device according to Claim 8, characterised in that the coupling surfaces (19a) of the transfer gripper (1) are plane surfaces of spherical segments (19), the respective spherical surface of which is pivotably mounted in a nipple (18) which is fastened in the respective gripper lever (2, 3) of the transfer gripper (1).
  16. Pressing device according to Claims 14 and 15, characterised in that the nipple (18) has a screw axis, parallel to which the cylindrical projection (20) runs.
EP08004038A 2007-03-22 2008-03-05 Pressing device for tubular workpieces Not-in-force EP1972394B1 (en)

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PL08004038T PL1972394T3 (en) 2007-03-22 2008-03-05 Pressing device for tubular workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007013706A DE102007013706B3 (en) 2007-03-22 2007-03-22 Pressing device for tubular workpieces

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EP1972394A1 EP1972394A1 (en) 2008-09-24
EP1972394B1 true EP1972394B1 (en) 2010-04-07

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AT (1) ATE463308T1 (en)
DE (2) DE102007013706B3 (en)
ES (1) ES2340096T3 (en)
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CN110114189A (en) * 2016-12-21 2019-08-09 沃恩阿克斯公开股份有限公司 Pressure setting
WO2022111753A1 (en) 2020-11-24 2022-06-02 Rothenberger Ag Radial pressing tool
EP4350904A1 (en) * 2022-09-13 2024-04-10 TE Connectivity Solutions GmbH Braid flare tool

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DE102008005854A1 (en) * 2008-01-16 2009-07-23 REMS-WERK Christian Föll und Söhne GmbH & Co KG Press ring and pliers for use with such a press ring
DE102009012199B3 (en) * 2009-03-07 2010-06-10 Rothenberger Ag Pressing device for tubular workpieces
DE102009047779A1 (en) 2009-09-30 2011-04-07 Rothenberger Ag Device for the axial compression of workpieces
DE102013004029A1 (en) * 2013-03-05 2014-09-11 Rems Gmbh & Co Kg pressing device
CN111702088A (en) * 2020-06-17 2020-09-25 艾默生精密工具技术(上海)有限公司 Crimping tool
DE102021105243B4 (en) 2021-03-04 2022-10-13 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg pressing tool
DE202021102613U1 (en) 2021-05-12 2022-08-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Press ring, press tool and adapter elements

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DE102004005558B4 (en) 2004-01-31 2006-04-20 Michael Birk Pressing tongs head and pressing tool
DE102004045156B4 (en) * 2004-09-17 2015-02-19 Viega Gmbh & Co. Kg Attachment for a pressing tool and method for pressing tubular workpieces
DE202005008125U1 (en) * 2005-05-24 2006-10-05 Herrle, Richard Pressing tool, press ring and pressing tongs

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CN110114189A (en) * 2016-12-21 2019-08-09 沃恩阿克斯公开股份有限公司 Pressure setting
US11458607B2 (en) 2016-12-21 2022-10-04 Von Arx Ag Press device
US11612991B2 (en) 2016-12-21 2023-03-28 Von Arx Ag Press device
WO2022111753A1 (en) 2020-11-24 2022-06-02 Rothenberger Ag Radial pressing tool
EP4350904A1 (en) * 2022-09-13 2024-04-10 TE Connectivity Solutions GmbH Braid flare tool

Also Published As

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ATE463308T1 (en) 2010-04-15
DE102007013706B3 (en) 2008-11-13
EP1972394A1 (en) 2008-09-24
DE502008000506D1 (en) 2010-05-20
ES2340096T3 (en) 2010-05-28
PL1972394T3 (en) 2010-09-30

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