EP1591176A1 - Crimp pressing tool for crimping workpieces - Google Patents

Crimp pressing tool for crimping workpieces Download PDF

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Publication number
EP1591176A1
EP1591176A1 EP05003374A EP05003374A EP1591176A1 EP 1591176 A1 EP1591176 A1 EP 1591176A1 EP 05003374 A EP05003374 A EP 05003374A EP 05003374 A EP05003374 A EP 05003374A EP 1591176 A1 EP1591176 A1 EP 1591176A1
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EP
European Patent Office
Prior art keywords
pressing
jaws
workpiece
pressing jaws
tool according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05003374A
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German (de)
French (fr)
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EP1591176B1 (en
Inventor
Walter Viegener
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.)
Viega GmbH and Co KG
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Viega GmbH and Co KG
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Publication of EP1591176A1 publication Critical patent/EP1591176A1/en
Application granted granted Critical
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Classifications

    • 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
    • B21D39/046—Connecting tubes to tube-like fittings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53987—Tube, sleeve or ferrule

Definitions

  • the present invention relates to a pressing tool for pressing Workpieces, in particular of a fitting with an inserted pipe end, with at least two pressing jaws which articulate to enclose a workpiece connected to each other and a hinge axis against an opening area the pressing jaws is arranged.
  • EP 1 095 739 discloses a pressing tool with only two pressing jaws, which are hinged together via an axle. On the axis opposite side, an opening gap is formed during pressing is closed. Again, there is a risk that in the opening gap when pressing a fold because of the lack of compression in radial Can train direction.
  • a pressing element is mounted on the hinge axis, that in the Closing the press jaws to the workpiece is movable.
  • the pressing element presses the workpiece during pressing in the direction of the opening area of the Pressing jaws, so that by the opposing forces occurring there forces on all sides Pressing the workpiece are present.
  • the advantage is used that the pressing element initially in a slightly retracted position before pressing is arranged and when closing the pressing jaws, the workpiece first in the direction of the hinge axis can be pressed to the pressing jaws to close something first. In a next phase, however, then too Pressing forces in the area of the press level between opening area and joint axis applied. Due to the uniform compression of the workpiece, it is possible to avoid wrinkling in the area of the opening area, as in this Only pressing forces are applied when the pressing jaws are largely closed are.
  • the pressing element On the side facing the press jaws wedge surfaces on which during pressing of the workpiece pressure surfaces of the pressing jaws attack. This can by the closing movement of the pressing jaws the pressing element in the radial direction be moved to the workpiece.
  • the angle of the wedge surfaces can the movement path of the pressing element during the closing movement of the pressing jaws To be defined.
  • a corresponding power gain be achieved.
  • two pressing jaws are provided, which is designed around a bolt Joint axis are rotatable.
  • the providence of two pressing jaws has the advantage that only a few components for the pressing tool are required. It can do that Pressing element have a leg with a slot that of the bolt is penetrated. This is a particularly easy way of sliding Determination of the pressing element. For an accurate guidance of the pressing element can two legs grip the press jaws in a U-shape.
  • the pressing jaws have projections adjacent to the opening area, which mesh in a comb-like manner when closing the pressing jaws.
  • a pressing tool 1 comprises two pressing jaws 2 and 3, which via a bolt 4 trained hinge axis are interconnected. On the opposite of the bolt 4 Side of the press jaws 2 and 3, an opening portion 5 is formed, so that a workpiece 6 are inserted between the pressing jaws 2 and 3 can and initially only loosely enclosed by the pressing jaws 2 and 3.
  • the Workpiece 6 is formed in the embodiment as a metal fitting, in the a pipe end is inserted.
  • On the fitting 6 is an annular bead 7 with a Sealing ring provided, wherein the pressing jaws 2 and 3 for pressing have certain inner contour, which is adapted to the shape of the fitting 6. The Size of the material deformation by pressing can thereby to the respective Purpose to be adapted.
  • a pressing member 8 is provided, half in each case is received in one of the pressing jaws 2 and 3 respectively.
  • the pressing element 8 has wedge-shaped surfaces 9 and 11 in the edge region, which engage with substantially are formed parallel to extending pressure surfaces 10 and 12.
  • a receptacle 14 and on the pressing jaw 3 On the opposite side to the bolt 4 is on the pressing jaw 2 a receptacle 14 and on the pressing jaw 3, a receptacle 15 for engagement with a Crimping pliers provided.
  • a Crimping pliers By squeezing the pressing tongs in the direction of a Pressing the press jaws 2 and 3 are closed and the workpiece 6 pressed.
  • the pressing jaws 2 and 3 are shown in the closed position, wherein the side surfaces 19 and 20 abut each other.
  • the projection takes hold 16 beyond the closing level into the receptacle 17 of the pressing jaw 3.
  • Beim Closing the pressing jaws 2 and 3 is further the pressing member 8 against the Workpiece 6 is pressed and the inner contour of the pressing jaws 2 and 3 and the Pressing element 8 form a straight pressing contour without jumps and steps.
  • the legs 21 surround the pressing jaws 2 and 3 in a U-shaped manner, so that the pressing element 8 is held captive on the pressing tool.
  • the pressing jaws 2 and 3 are initially loose around the Fitting 6 placed and then the pressing tongs on the receptacles 14 and 15 set to close the pressing jaws 2 and 3.
  • the pressing jaws 2 and 3 are initially on each other moved to and the fitting 6 is pressed to the pressing member 8. After that it lies Pressing element 8 on the fitting 6 and is pressed by the pressing jaws 2 and 3 in Direction of the comb-like projections 16 and 17 pressed. This ensures one Contact pressure in the area of the press level.
  • the pressing tool is particularly well suited for pressing pipe joints, whereby other workpieces can be pressed.
  • FIGS. 5A and 5B show a further embodiment of a pressing tool 1 '. shown, which is designed as an essay.
  • Pressing jaws 2 'and 3' which has a hexagonal cross-section Press opening with a central annular portion form and around each other spaced axes 4 'are rotatable.
  • FIG. 6 shows a press tool 1 "designed as a press chain, in which the pressing jaws 2 "and 3" are formed of a plurality of links 31, 32 and 33, the on an inner surface to each other to form a pressing surface 36 together can be applied.
  • the pressing jaws 2 "and 3" are rotatable about an axis 4 ", wherein adjacent to the axis 4 "a displaceable in the radial direction pressing member 6 "is provided, which in the closed position a portion 38 of the pressing surface 36 forms.
  • the individual members 31, 32 and 33 are rotatably articulated via axes 34, wherein the axes 34 are fixed in the axial direction in each case via a snap ring 35. Further, the members 31, 32 and 33 via spring elements 37 to facilitate the Mounting biased in a closed position.
  • the press chain is over a Compressed pressing tool not shown pulled together, with the crimping pliers in on 39 engaged with the pressing jaws 2 "and 3".
  • the adjacent to an opening area arranged members 33 of the pressing jaws 2 "and 3" engage in Press comb-like into each other.
  • FIGS. 7A and 7B show a pressing tool designed as pressing tongs 1 "', which has two pressing jaws 2 '"and 3"' which enclose an inner pressing opening 40.
  • the pressing jaws 2 "'and 3"' are via a hinge mechanism pivotable and can be moved manually via two handle 41 and 42. Between the press jaws 2 '"and 3'" is on the side of the pivot axis a pressing member 40 slidable pressing member 6 "'arranged that over two wedge surfaces 43 is movable.
  • the wedge surfaces 43 can not on the Pressing jaws 2 '"and 3'" but on other moving components of the Gelenkmechanismusses be arranged.
  • the pressing element 6 "' is on a bolt 44 slidably mounted, each having a slot 49 on a leg 46 of the pressing element 6 '"passes through.

Abstract

The tool has two pressing jaws (2, 3) hinged together to enclose a workpiece having an inserted pipe end. The pressing tool includes an opening area (5) located in between the two pressing jaws, and one hinge pin arranged opposite to the opening area. A pressing unit is located adjacent to the hinge pin and arranged to be moved towards the workpiece during closing of the pressing jaws.

Description

Die vorliegende Erfindung betrifft ein Presswerkzeug zum Verpressen von Werkstücken, insbesondere von einem Fitting mit einem eingesteckten Rohrende, mit mindestens zwei Pressbacken, die zum Umschließen eines Werkstückes gelenkig miteinander verbunden sind und eine Gelenkachse gegenüber einem Öffnungsbereich der Pressbacken angeordnet ist.The present invention relates to a pressing tool for pressing Workpieces, in particular of a fitting with an inserted pipe end, with at least two pressing jaws which articulate to enclose a workpiece connected to each other and a hinge axis against an opening area the pressing jaws is arranged.

Aus der DE 42 40 427 ist ein Presswerkzeug mit mehreren Pressbackenelementen bekannt, die gelenkig miteinander verbunden sind und in einem Öffnungsbereich über eine Pressbacke zusammenziehbar sind, um ein in den Pressbackenelementen aufgenommenes Werkstück zu verpressen. Dabei ist zwangsläufig ein Öffnungsspalt zwischen benachbarten Pressbackenelementen vorgesehen, in dem das zu verpressende Material nach außen gequetscht werden kann und Falten ausbildet. Gerade in der Pressebene, also in einer Ebene senkrecht zur Presskraft der Presszange lassen sich nur schlecht Presskräfte auf das Werkstück übertragen.From DE 42 40 427 is a pressing tool with several pressing jaw elements known, which are hinged together and in an opening area are contractible via a pressing jaw to one in the pressing jaw elements to compress the picked workpiece. This is inevitably an opening gap provided between adjacent die elements, in which the pressing material can be squeezed outwards and forms wrinkles. Especially in the press plane, ie in a plane perpendicular to the pressing force of the pressing tongs It is difficult to transmit pressing forces to the workpiece.

Ferner ist aus der EP 1 095 739 ein Presswerkzeug mit nur zwei Pressbacken bekannt, die über eine Achse gelenkig miteinander verbunden sind. Auf der der Achse gegenüberliegenden Seite ist ein Öffnungsspalt ausgebildet, der beim Verpressen verschlossen wird. Auch hier besteht die Gefahr, dass in dem Öffnungsspalt sich beim Verpressen eine Falte wegen der mangelnden Verpressung in radiale Richtung ausbilden kann.Furthermore, EP 1 095 739 discloses a pressing tool with only two pressing jaws, which are hinged together via an axle. On the axis opposite side, an opening gap is formed during pressing is closed. Again, there is a risk that in the opening gap when pressing a fold because of the lack of compression in radial Can train direction.

Es ist daher Aufgabe der vorliegenden Erfindung ein Presswerkzeug zu schaffen, bei dem gleichmäßig Presskräfte aufgebracht werden können und eine Faltenbildung in einem Öffnungsbereich vermieden wird.It is therefore an object of the present invention to provide a pressing tool, in which uniform pressing forces can be applied and wrinkling is avoided in an opening area.

Diese Aufgabe wird mit einem Presswerkzeug mit den Merkmalen des Anspruches 1 gelöst.This object is achieved with a pressing tool having the features of the claim 1 solved.

Erfindungsgemäß ist an der Gelenkachse ein Presselement gelagert, dass bei dem Schließen der Pressbacken zum Werkstück bewegbar ist. Dabei drückt das Presselement das Werkstück beim Verpressen in Richtung des Öffnungsbereiches der Pressbacken, sodass durch die dort auftretenden Gegenkräfte allseitig Kräfte zum Verpressen des Werkstückes vorhanden sind. Dabei wird der Vorteil genutzt, dass das Presselement zunächst in einer etwas zurückgezogenen Position vor dem Verpressen angeordnet ist und beim Schließen der Pressbacken das Werkstück zunächst in Richtung der Gelenkachse gedrückt werden kann, um die Pressbacken zunächst etwas zu schließen. In einer nächsten Phase werden jedoch dann auch Presskräfte im Bereich der Pressebene zwischen Öffnungsbereich und Gelenkachse aufgebracht. Durch die gleichmäßige Verpressung des Werkstückes ist es möglich, eine Faltenbildung im Bereich des Öffnungsbereiches zu vermeiden, da in diesem Bereich erst Presskräfte aufgebracht werden, wenn die Pressbacken weitgehend geschlossen sind.According to the invention, a pressing element is mounted on the hinge axis, that in the Closing the press jaws to the workpiece is movable. The pressing element presses the workpiece during pressing in the direction of the opening area of the Pressing jaws, so that by the opposing forces occurring there forces on all sides Pressing the workpiece are present. The advantage is used that the pressing element initially in a slightly retracted position before pressing is arranged and when closing the pressing jaws, the workpiece first in the direction of the hinge axis can be pressed to the pressing jaws to close something first. In a next phase, however, then too Pressing forces in the area of the press level between opening area and joint axis applied. Due to the uniform compression of the workpiece, it is possible to avoid wrinkling in the area of the opening area, as in this Only pressing forces are applied when the pressing jaws are largely closed are.

Gemäß einer bevorzugten Ausführungsform der Erfindung weist das Presselement auf der zu den Pressbacken gewandten Seite Keilflächen auf, an denen beim Verpressen des Werkstückes Druckflächen der Pressbacken angreifen. Dadurch kann durch die Schließbewegung der Pressbacken das Presselement in radiale Richtung zu dem Werkstück bewegt werden. Durch die Wahl des Winkels der Keilflächen kann die Bewegungsbahn des Presselementes bei der Schließbewegung der Pressbacken definiert werden. Dabei kann hier auch eine entsprechende Kraftverstärkung erreicht werden. According to a preferred embodiment of the invention, the pressing element On the side facing the press jaws wedge surfaces on which during pressing of the workpiece pressure surfaces of the pressing jaws attack. This can by the closing movement of the pressing jaws the pressing element in the radial direction be moved to the workpiece. By choosing the angle of the wedge surfaces can the movement path of the pressing element during the closing movement of the pressing jaws To be defined. Here, also a corresponding power gain be achieved.

Vorzugsweise sind zwei Pressbacken vorgesehen, die um eine als Bolzen ausgebildete Gelenkachse drehbar sind. Es ist natürlich auch möglich, mehr als zwei Pressbacken gelenkig miteinander zu verbinden, um durch einen Pressring ein Verpressen vorzunehmen. Die Vorsehung von zwei Pressbacken besitzt den Vorteil, dass nur wenige Bauteile für das Presswerkzeug erforderlich sind. Dabei kann das Presselement einen Schenkel mit einem Langloch aufweisen, das von dem Bolzen durchgriffen ist. Dies ist eine besonders einfache Möglichkeit der verschiebbaren Festlegung des Presselementes. Für eine genaue Führung des Presselementes können zwei Schenkel die Pressbacken U-förmig umgreifen.Preferably, two pressing jaws are provided, which is designed around a bolt Joint axis are rotatable. Of course it is also possible to have more than two press jaws articulated to each other to press through a press ring make. The providence of two pressing jaws has the advantage that only a few components for the pressing tool are required. It can do that Pressing element have a leg with a slot that of the bolt is penetrated. This is a particularly easy way of sliding Determination of the pressing element. For an accurate guidance of the pressing element can two legs grip the press jaws in a U-shape.

Um auch im Bereich der Pressebene besonders gut Presskräfte aufbringen zu können, weisen die Pressbacken benachbart zu dem Öffnungsbereich Vorsprünge auf, die beim Schließen der Pressbacken kammartig ineinander greifen. Dabei kann jedem Vorsprung einer Pressbacke eine Aussparung an der gegenüberliegenden Pressbacke zugeordnet sein. Zwar muss im Öffnungsbereich nach wie vor ein Spalt vor dem Verpressen zwischen den Pressbacken ausgebildet sein, dieser erstreckt sich jedoch nicht mehr über die gesamte Breite der Pressbacken, sondern wird in mehrere kleinere Abschnitte durch die Vorsprünge unterteilt. Dadurch wird die Gefahr der Faltenbildung in dem Bereich zwischen den Pressbacken vermieden, weil die einzelnen Vorsprünge das Werkstück in diesem Bereich abstützen.To be able to apply press forces particularly well in the press area, the pressing jaws have projections adjacent to the opening area, which mesh in a comb-like manner when closing the pressing jaws. Anyone can do this Projection of a pressing jaw a recess on the opposite Be associated with pressing jaw. Although there must still be a gap in the opening area be formed between the pressing jaws before pressing, this extends However, not over the entire width of the pressing jaws, but in divided into several smaller sections by the projections. This will be the danger avoiding wrinkling in the area between the dies, because the individual projections support the workpiece in this area.

Die Erfindung wird nachfolgend anhand mehrerer Ausfiihrungsbeispiele mit Bezug auf die beigefügten Zeichnungen näher erläutert. Es zeigen:

Figur 1
eine geschnittene Seitenansicht eines Ausführungsbeispiels eines erfindungsgemäßen Presswerkzeuges im geöffneten Zustand;
Figur 2
eine geschnittene Seitenansicht des Presswerkzeuges der Figur 1 im geschlossenen Zustand;
Figur 3
eine Seitenansicht des Presswerkzeugs der Figur 1 im geschlossenen Zustand;
Figur 4
eine perspektivische Ansicht des Presswerkzeugs der Figur 1 im geöffneten Zustand;
Figur 5A
eine Draufsicht auf ein erfindungsgemäßes Presswerkzeug gemäß einem weiteren Ausführungsbeispiel;
Figur 5B
eine perspektivische Ansicht des Presswerkzeuges der Figur 5A;
Figur 6
eine Draufsicht auf ein erfindungsgemäßes Presswerkzeug gemäß einem weiteren Ausführungsbeispiel;
Figur 7A
eine Draufsicht auf ein erfindungsgemäßes Presswerkzeug gemäß einem weiteren Ausführungsbeispiel, und
Figur 7B
eine vergrößerte Detailansicht des Presswerkzeuges der Figur 7A.
The invention will be explained in more detail below with reference to several exemplary embodiments with reference to the accompanying drawings. Show it:
FIG. 1
a sectional side view of an embodiment of a pressing tool according to the invention in the open state;
FIG. 2
a sectional side view of the pressing tool of Figure 1 in the closed state;
FIG. 3
a side view of the pressing tool of Figure 1 in the closed state;
FIG. 4
a perspective view of the pressing tool of Figure 1 in the open state;
FIG. 5A
a plan view of an inventive pressing tool according to another embodiment;
FIG. 5B
a perspective view of the pressing tool of Figure 5A;
FIG. 6
a plan view of an inventive pressing tool according to another embodiment;
FIG. 7A
a plan view of an inventive pressing tool according to another embodiment, and
FIG. 7B
an enlarged detail view of the pressing tool of Figure 7A.

Ein Presswerkzeug 1 umfasst zwei Pressbacken 2 und 3, die über eine als Bolzen 4 ausgebildete Gelenkachse miteinander verbunden sind. Auf der dem Bolzen 4 gegenüberliegenden Seite der Pressbacken 2 und 3 ist ein Öffnungsbereich 5 ausgebildet, damit ein Werkstück 6 zwischen die Pressbacken 2 und 3 eingefügt werden kann und zunächst nur lose von den Pressbacken 2 und 3 umschlossen ist. Das Werkstück 6 ist in dem Ausführungsbeispiel als Metallfitting ausgebildet, in den ein Rohrende einsteckbar ist. An dem Fitting 6 ist ein ringförmiger Wulst 7 mit einem Dichtring vorgesehen, wobei die Pressbacken 2 und 3 eine zum Verpressen bestimmte Innenkontur besitzen, die an die Form des Fittings 6 angepasst ist. Die Größe der Materialumformung durch das Verpressen kann dabei an den jeweiligen Einsatzzweck angepasst sein.A pressing tool 1 comprises two pressing jaws 2 and 3, which via a bolt 4 trained hinge axis are interconnected. On the opposite of the bolt 4 Side of the press jaws 2 and 3, an opening portion 5 is formed, so that a workpiece 6 are inserted between the pressing jaws 2 and 3 can and initially only loosely enclosed by the pressing jaws 2 and 3. The Workpiece 6 is formed in the embodiment as a metal fitting, in the a pipe end is inserted. On the fitting 6 is an annular bead 7 with a Sealing ring provided, wherein the pressing jaws 2 and 3 for pressing have certain inner contour, which is adapted to the shape of the fitting 6. The Size of the material deformation by pressing can thereby to the respective Purpose to be adapted.

Auf der Seite des Bolzens 4 ist ein Presselement 8 vorgesehen, das zur Hälfte jeweils in einer der Pressbacken 2 bzw. 3 aufgenommen ist. Das Presselement 8 weist im Randbereich keilförmige Flächen 9 und 11 auf, die in Eingriff mit im Wesentlichen parallel dazu erstreckenden Druckflächen 10 und 12 ausgebildet sind. Durch das Schließen der Pressbacken 2 und 3 beim Drehen um den Bolzen 4 drücken die Druckflächen 10 und 12 auf die Keilflächen 9 und 11 und bewegen somit das Presselement 8 zu dem Werkstück 6 hin.On the side of the bolt 4, a pressing member 8 is provided, half in each case is received in one of the pressing jaws 2 and 3 respectively. The pressing element 8 has wedge-shaped surfaces 9 and 11 in the edge region, which engage with substantially are formed parallel to extending pressure surfaces 10 and 12. By closing the pressing jaws 2 and 3 when turning around the bolt 4 press the pressure surfaces 10 and 12 on the wedge surfaces 9 and 11 and thus move the pressing member 8 toward the workpiece 6.

Auf der zum Bolzen 4 gegenüberliegenden Seite ist an der Pressbacke 2 eine Aufnahme 14 und an der Pressbacke 3 eine Aufnahme 15 für den Eingriff mit einer Presszange vorgesehen. Durch Zusammendrücken der Presszange in Richtung einer Pressebene werden die Pressbacken 2 und 3 geschlossen und das Werkstück 6 verpresst.On the opposite side to the bolt 4 is on the pressing jaw 2 a receptacle 14 and on the pressing jaw 3, a receptacle 15 for engagement with a Crimping pliers provided. By squeezing the pressing tongs in the direction of a Pressing the press jaws 2 and 3 are closed and the workpiece 6 pressed.

An dem Öffnungsbereich 5 weist die Pressbacke 2 einen Vorsprung 16 auf, der über eine Seitenfläche 20 hervorsteht. Auf der gegenüberliegenden Seite weist die Pressbacke 3 eine Aufnahme 17 auf, die so dimensioniert ist, dass sie den Vorsprung 16 aufnehmen kann und gegenüber einer Seitenfläche 19 zurückgesetzt ausgebildet ist. Hinter der Aussparung 17 ist ein Vorsprung 18 an der Pressbacke 3 ausgebildet, der in eine entsprechend ausgebildete Aufnahme an der Pressbacke 2 eingreifen kann. Die Vorsprünge 16 und 18 greifen beim Schließen der Pressbacken 2 und 3 somit kammartig ineinander.At the opening portion 5, the pressing jaw 2 on a projection 16 which over a side surface 20 protrudes. On the opposite side, the Pressing jaw 3 on a receptacle 17 which is dimensioned so that they the projection 16 can record and reset to a side surface 19 is trained. Behind the recess 17 is a projection 18 on the pressing jaw third formed, in a correspondingly formed receptacle on the pressing jaw. 2 can intervene. The projections 16 and 18 engage in closing the pressing jaws 2 and 3 thus comb-like into each other.

In Figur 2 sind die Pressbacken 2 und 3 in der geschlossenen Position gezeigt, wobei die Seitenflächen 19 und 20 aneinander anliegen. Dabei greift der Vorsprung 16 über die Schließebene hinaus in die Aufnahme 17 der Pressbacke 3. Beim Schließen der Pressbacken 2 und 3 wird ferner das Presselement 8 gegen das Werkstück 6 gedrückt und die Innenkontur der Pressbacken 2 und 3 sowie des Presselementes 8 bilden eine gerade Presskontur ohne Sprünge und Stufen aus.In Figure 2, the pressing jaws 2 and 3 are shown in the closed position, wherein the side surfaces 19 and 20 abut each other. The projection takes hold 16 beyond the closing level into the receptacle 17 of the pressing jaw 3. Beim Closing the pressing jaws 2 and 3 is further the pressing member 8 against the Workpiece 6 is pressed and the inner contour of the pressing jaws 2 and 3 and the Pressing element 8 form a straight pressing contour without jumps and steps.

Wie in Figur 3 zu sehen ist, sind an dem Presselement 8 an gegenüberliegenden Seiten der Pressbacken 2 und 3 Schenkel 21 angeformt, in denen ein Langloch 22 ausgebildet ist. Der Bolzen 4 durchgreift dabei das Langloch 22, sodass das Presselement 8 entlang des Langloches 22 relativ zu dem Bolzen 4 bewegbar ist. Die Schenkel 21 sorgen dabei für eine seitliche Führung des Presselementes 8.As can be seen in Figure 3, are on the pressing member 8 at opposite Side of the pressing jaws 2 and 3 legs 21 formed in which a slot 22nd is trained. The bolt 4 passes through the slot 22, so that the pressing element 8 is movable along the elongated hole 22 relative to the pin 4. The Legs 21 thereby ensure lateral guidance of the pressing element 8.

Auf der gegenüberliegenden Seite greift der Vorsprung 18 der Pressbacke 3 in eine entsprechende Aufnahme der Pressbacke 2 ein, wobei ein radial von dem Werkstück 6 beabstandeter Vorsprung 23 der Pressbacke 2 in eine darüber angeordnete Aufnahme eingreift. Dieses kammartige Ineinandergreifen der Vorsprünge sorgt bei hohen Presskräften für eine gewisse Abstützung.On the opposite side of the projection 18 of the pressing jaw 3 engages in a corresponding recording of the pressing jaw 2 a, wherein a radially from the workpiece 6 spaced projection 23 of the pressing jaw 2 arranged in an above it Recording engages. This comb-like interlocking of the projections provides at high press forces for a certain support.

Wie in Figur 4 zu sehen ist, umgreifen die Schenkel 21 die Pressbacken 2 und 3 U-förmig, sodass das Presselement 8 unverlierbar an dem Presswerkzeug gehalten ist. In der geöffneten Stellung werden die Pressbacken 2 und 3 zunächst lose um den Fitting 6 gelegt und anschließend wird die Presszange an den Aufnahmen 14 und 15 angesetzt, um die Pressbacken 2 und 3 zu schließen.As can be seen in FIG. 4, the legs 21 surround the pressing jaws 2 and 3 in a U-shaped manner, so that the pressing element 8 is held captive on the pressing tool. In the open position, the pressing jaws 2 and 3 are initially loose around the Fitting 6 placed and then the pressing tongs on the receptacles 14 and 15 set to close the pressing jaws 2 and 3.

Zu Beginn des Pressvorganges werden zunächst die Pressbacken 2 und 3 aufeinander zu bewegt und der Fitting 6 zu dem Presselement 8 gedrückt. Danach liegt das Presselement 8 an dem Fitting 6 an und wird durch die Pressbacken 2 und 3 in Richtung der kammartigen Vorsprünge 16 und 17 gepresst. Dies sorgt für einen Anpressdruck im Bereich der Pressebene.At the beginning of the pressing process, the pressing jaws 2 and 3 are initially on each other moved to and the fitting 6 is pressed to the pressing member 8. After that it lies Pressing element 8 on the fitting 6 and is pressed by the pressing jaws 2 and 3 in Direction of the comb-like projections 16 and 17 pressed. This ensures one Contact pressure in the area of the press level.

Das Presswerkzeug eignet sich besonders gut zum Verpressen von Rohrverbindungen, wobei auch andere Werkstücke verpresst werden können.The pressing tool is particularly well suited for pressing pipe joints, whereby other workpieces can be pressed.

In Fig. 5A und 5B ist ein weiteres Ausführungsbeispiel eines Presswerkzeuges 1' dargestellt, das als Aufsatz ausgebildet ist. Dabei sind zwei einander gegenüberliegende Pressbacken 2' und 3' vorgesehen, die eine im Querschnitt sechseckige Pressöffnung mit einem mittleren ringförmigen Abschnitt ausbilden und um voneinander beabstandete Achsen 4' drehbar sind. Die Achsen 4' sind als Bolzen ausgebildet und sind in axialer Richtung durch einen Sprengring 5' festgelegt. Die beiden Achsen 4' sind dabei über ein Halteelement 8' miteinander verbunden.FIGS. 5A and 5B show a further embodiment of a pressing tool 1 '. shown, which is designed as an essay. There are two opposing ones Pressing jaws 2 'and 3' are provided, which has a hexagonal cross-section Press opening with a central annular portion form and around each other spaced axes 4 'are rotatable. The axes 4 'are formed as bolts and are fixed in the axial direction by a snap ring 5 '. The Both axes 4 'are connected via a holding element 8' together.

Über die Bewegung eines Kolbens werden einander gegenüberliegenden Keilflächen auseinander gedrückt und somit die Pressbacken 2' und 3' zum Verpressen eines Rohres aufeinander zu bewegt. Dabei wird ein zwischen den Pressbacken 2' und 3' angeordnetes Presselement 6' in radialer Richtung zu der Pressöffnung hin bewegt, wobei die Pressbacken 2' und 3' wie bei den vorangegangenen Ausfiihrungsbeispielen auf entsprechende Keilflächen wirken. Das Presselement 6' ist dabei mit zwei Schenkeln an einem Bolzen 7' über ein Langloch verschiebbar gelagert. Im vorderen Bereich sind die Pressbacken wie bei dem vorangegangenen Ausführungsbeispiel kammartig ausgebildet.About the movement of a piston are opposed wedge surfaces pressed apart and thus the pressing jaws 2 'and 3' for pressing a tube towards each other. In this case, a between the pressing jaws 2 ' and 3 'disposed pressing member 6' in the radial direction to the press opening moved, wherein the pressing jaws 2 'and 3' as in the previous Ausfiihrungsbeispielen act on corresponding wedge surfaces. The pressing element 6 'is here with two legs on a bolt 7 'slidably mounted on a slot. In the front area are the pressing jaws as in the previous Embodiment comb-like design.

In Fig. 6 ist ein als Presskette ausgebildetes Presswerkzeug 1" dargestellt, bei dem die Pressbacken 2" und 3" aus mehreren Gliedern 31, 32 und 33 gebildet sind, die an einer Innenfläche aneinander zur Ausbildung einer Pressfläche 36 aneinander anlegbar sind. Die Pressbacken 2" und 3" sind um eine Achse 4" drehbar, wobei benachbart zu der Achse 4" ein in radiale Richtung verschiebbares Presselement 6" vorgesehen ist, das in der geschlossenen Position einen Abschnitt 38 der Pressfläche 36 bildet.FIG. 6 shows a press tool 1 "designed as a press chain, in which the pressing jaws 2 "and 3" are formed of a plurality of links 31, 32 and 33, the on an inner surface to each other to form a pressing surface 36 together can be applied. The pressing jaws 2 "and 3" are rotatable about an axis 4 ", wherein adjacent to the axis 4 "a displaceable in the radial direction pressing member 6 "is provided, which in the closed position a portion 38 of the pressing surface 36 forms.

Die einzelnen Glieder 31, 32 und 33 sind über Achsen 34 drehbar angelenkt, wobei die Achsen 34 in axialer Richtung jeweils über einen Sprengring 35 fixiert sind. Ferner sind die Glieder 31, 32 und 33 über Federelemente 37 zur Erleichterung der Montage in eine geschlossene Position vorgespannt. Die Presskette wird über eine nicht dargestellte Presszange zusammengezogen, wobei die Presszange in Auf nahmen 39 an den Pressbacken 2" und 3" eingreift. Die benachbart zu einem Öffnungsbereich angeordneten Glieder 33 der Pressbacken 2" und 3" greifen beim Verpressen kammartig ineinander.The individual members 31, 32 and 33 are rotatably articulated via axes 34, wherein the axes 34 are fixed in the axial direction in each case via a snap ring 35. Further, the members 31, 32 and 33 via spring elements 37 to facilitate the Mounting biased in a closed position. The press chain is over a Compressed pressing tool not shown pulled together, with the crimping pliers in on 39 engaged with the pressing jaws 2 "and 3". The adjacent to an opening area arranged members 33 of the pressing jaws 2 "and 3" engage in Press comb-like into each other.

In Fig. 7A und 7B ist ein als Presszange 1"' ausgebildetes Presswerkzeug gezeigt, das zwei Pressbacken 2'" und 3"' aufweist, die eine innere Pressöffnung 40 einschließen. Die Pressbacken 2"' und 3"' sind über einen Gelenkmechanismus verschwenkbar und können über zwei Griffhebel 41 und 42 manuell bewegt werden. Zwischen den Pressbacken 2'" und 3'" ist auf der Seite der Schwenkachse ein zur Pressöffnung 40 verschiebbares Presselement 6"' angeordnet, dass über zwei Keilflächen 43 bewegbar ist. Die Keilflächen 43 können dabei nicht an den Pressbacken 2'" und 3'" sondern an anderen beweglichen Bauteilen des Gelenkmechanismusses angeordnet sein. Das Presselement 6"' ist dabei an einem Bolzen 44 verschiebbar gelagert, der je ein Langloch 49 an einem Schenkel 46 des Presselementes 6'" durchgreift.FIGS. 7A and 7B show a pressing tool designed as pressing tongs 1 "', which has two pressing jaws 2 '"and 3"' which enclose an inner pressing opening 40. The pressing jaws 2 "'and 3"' are via a hinge mechanism pivotable and can be moved manually via two handle 41 and 42. Between the press jaws 2 '"and 3'" is on the side of the pivot axis a pressing member 40 slidable pressing member 6 "'arranged that over two wedge surfaces 43 is movable. The wedge surfaces 43 can not on the Pressing jaws 2 '"and 3'" but on other moving components of the Gelenkmechanismusses be arranged. The pressing element 6 "'is on a bolt 44 slidably mounted, each having a slot 49 on a leg 46 of the pressing element 6 '"passes through.

Claims (7)

Presswerkzeug (1, 1', 1", 1"') zum Verpressen von Werkstücken, insbesondere von einem Fitting (6) mit einem eingesteckten Rohrende, mit mindestens zwei Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"'), die zum Umschließen eines Werkstückes (6) gelenkig miteinander verbunden sind und mindestens eine Gelenkachse (4, 4', 4") gegenüber einem Öffnungsbereich (5) der Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') angeordnet ist, dadurch gekennzeichnet, dass benachbart zu der mindestens einen Gelenkachse (4) ein Presselement (8, 6', 6", 6"') angeordnet ist, das beim Schließen der Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') zum Werkstück (6) bewegbar ist.Pressing tool (1, 1 ', 1 ", 1"') for pressing workpieces, in particular of a fitting (6) with an inserted pipe end, with at least two pressing jaws (2, 3, 2 ', 3', 2 ", 3 "2"', 3 "'), which are hinged together to enclose a workpiece (6) and at least one hinge axis (4, 4 ', 4") with respect to an opening region (5) of the pressing jaws (2, 3; ', 3', 2 ", 3", 2 "', 3"'), characterized in that adjacent to the at least one hinge axis (4) a pressing element (8, 6 ', 6 ", 6"') is arranged, which when closing the pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "', 3"') to the workpiece (6) is movable. Presswerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das Presselement (8, 6', 6", 6"') auf der zu den Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') gewandten Seite Keilflächen (9, 11) aufweist, an denen beim Verpressen des Werkstückes (6) Druckflächen (10, 12) der Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') angreifen.Crimping tool according to claim 1, characterized in that the pressing element (8, 6 ', 6 ", 6"') on the pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "', 3 '') facing side wedge surfaces (9, 11), in which when pressing the workpiece (6) pressure surfaces (10, 12) of the pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "', 3 "') attack. Presswerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwei Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') vorgesehen sind, die um eine als Bolzen (4) ausgebildete Gelenkachse drehbar sind.Crimping tool according to claim 1 or 2, characterized in that two pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "', 3"') are provided which are formed around a bolt (4) Joint axis are rotatable. Presswerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Presselement (8, 6', 6", 6"') einen Schenkel (21) mit einem Langloch (22) aufweist, das von einem Bolzen (4) durchgriffen ist.Press tool according to one of claims 1 to 3, characterized in that the pressing element (8, 6 ', 6 ", 6"') has a leg (21) with a slot (22) which is penetrated by a bolt (4) , Presswerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Presselement (8, 6', 6", 6"') die Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') mit zwei Schenkeln (21) U-förmig umgreift und an diesen geführt ist.Crimping tool according to one of claims 1 to 4, characterized in that the pressing element (8, 6 ', 6 ", 6"') the pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "' , 3 "') with two legs (21) U-shaped surrounds and is guided to this. Presswerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Pressbacken (2, 3; 2', 3'; 2", 3"; 2"', 3"') benachbart zu dem Öff nungsbereich (5) Vorsprünge (16, 18) aufweisen, die beim Schließen der Pressbacken (2, 3) kammartig ineinander greifen.Crimping tool according to one of claims 1 to 5, characterized in that the pressing jaws (2, 3, 2 ', 3', 2 ", 3", 2 "', 3"') adjacent to the opening area (5) have projections (3). 16, 18), which engage in a comb-like manner when closing the pressing jaws (2, 3). Presswerkzeug nach Anspruch 6, dadurch gekennzeichnet, dass jedem Vorsprung (16, 18) einer Pressbacke (2, 3; 2', 3'; 2", 3"; 2"', 3"') eine Aussparung (17) an der gegenüberliegenden Pressbacke (2, 3; 2', 3'; 2", 3"; 2"', 3"') zugeordnet ist.A pressing tool according to claim 6, characterized in that each projection (16, 18) of a pressing jaw (2, 3, 2 ', 3', 2 ", 3", 2 "', 3"') has a recess (17) on the opposite pressing jaw (2, 3, 2 ', 3', 2 ", 3", 2 "', 3"') is assigned.
EP05003374A 2004-04-30 2005-02-17 Crimp pressing tool for crimping workpieces Active EP1591176B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004007034U DE202004007034U1 (en) 2004-04-30 2004-04-30 Pressing tool for pressing workpieces
DE202004007034U 2004-04-30

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EP1591176A1 true EP1591176A1 (en) 2005-11-02
EP1591176B1 EP1591176B1 (en) 2007-12-12

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US (1) US7237427B2 (en)
EP (1) EP1591176B1 (en)
JP (1) JP4176091B2 (en)
AT (1) ATE380611T1 (en)
DE (2) DE202004007034U1 (en)
DK (1) DK1591176T3 (en)
ES (1) ES2297546T3 (en)

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EP2027971A2 (en) 2007-08-24 2009-02-25 REMS-WERK Christian Föll und Söhne GmbH Press clamp for radial pressing of pipes, pipe sections and similar
US9551445B2 (en) 2014-06-09 2017-01-24 Cooper Technologies Company Conduit receivers
US10302230B2 (en) 2014-06-09 2019-05-28 Eaton Intelligent Power Limited Field serviceable conduit receivers

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US7878790B2 (en) * 2005-09-23 2011-02-01 Bruns Daniel Kidd Tool to crimp non-metallic tubing onto fittings
US7805972B2 (en) * 2005-10-12 2010-10-05 Surface Technology Holdings Ltd. Integrally bladed rotating turbo machinery and method and apparatus for achieving the same
US20080111369A1 (en) * 2006-11-15 2008-05-15 Giulio Pettinaroli Tubular crimp connection and method of forming
US7987690B2 (en) * 2008-01-04 2011-08-02 Cerro Flow Products Llc Fluid conduits with integral end fittings and associated methods of manufacture and use
US7942456B2 (en) * 2008-01-04 2011-05-17 Cerro Flow Products, Inc. Fluid conduits with integral end fittings and associated methods of manufacture and use
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US10675805B2 (en) * 2016-12-14 2020-06-09 Ridge Tool Company Electrically powered crimp tool and method of using
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GB2416324B (en) * 2004-07-02 2007-09-19 Klauke Gmbh Gustav Pair of processing jaws for hydraulic or electric pressing tools, and insulating covering for a pressing jaw
EP2027971A2 (en) 2007-08-24 2009-02-25 REMS-WERK Christian Föll und Söhne GmbH Press clamp for radial pressing of pipes, pipe sections and similar
EP2027971A3 (en) * 2007-08-24 2010-08-04 REMS-WERK Christian Föll und Söhne GmbH Press clamp for radial pressing of pipes, pipe sections and similar
US9551445B2 (en) 2014-06-09 2017-01-24 Cooper Technologies Company Conduit receivers
US9800030B2 (en) 2014-06-09 2017-10-24 Cooper Technologies Company Conduit receivers
US10302230B2 (en) 2014-06-09 2019-05-28 Eaton Intelligent Power Limited Field serviceable conduit receivers

Also Published As

Publication number Publication date
US20050241359A1 (en) 2005-11-03
EP1591176B1 (en) 2007-12-12
ES2297546T3 (en) 2008-05-01
JP4176091B2 (en) 2008-11-05
JP2005313232A (en) 2005-11-10
DE202004007034U1 (en) 2005-09-15
DK1591176T3 (en) 2008-05-05
DE502005002187D1 (en) 2008-01-24
US7237427B2 (en) 2007-07-03
ATE380611T1 (en) 2007-12-15

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