EP1535677A1 - Press tool - Google Patents

Press tool Download PDF

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Publication number
EP1535677A1
EP1535677A1 EP03405848A EP03405848A EP1535677A1 EP 1535677 A1 EP1535677 A1 EP 1535677A1 EP 03405848 A EP03405848 A EP 03405848A EP 03405848 A EP03405848 A EP 03405848A EP 1535677 A1 EP1535677 A1 EP 1535677A1
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EP
European Patent Office
Prior art keywords
pressing
press
tool
pressing jaw
closed
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
EP03405848A
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German (de)
French (fr)
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EP1535677B1 (en
Inventor
Rudolf Allemann
Abdullah Oengören
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.)
Geberit Technik AG
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Geberit Technik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geberit Technik AG filed Critical Geberit Technik AG
Priority to AT03405848T priority Critical patent/ATE372840T1/en
Priority to EP03405848A priority patent/EP1535677B1/en
Priority to DE50308188T priority patent/DE50308188D1/en
Publication of EP1535677A1 publication Critical patent/EP1535677A1/en
Application granted granted Critical
Publication of EP1535677B1 publication Critical patent/EP1535677B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B21D39/048—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 using presses for radially crimping tubular elements

Definitions

  • the invention relates to a pressing tool, in particular for pressing of pipe ends, with at least two pressing jaw elements, which form an opening gap with opposite ends, the is essentially closed after pressing.
  • Pressing tools of the type mentioned have long been known and especially for pressing pipe ends in the sanitary area used. For example, by plastic compression Water pipes are connected with fittings. The pressing jaws when pressing by hand or with a hydraulic Drive closed. During the pressing process, the opening gap closed between the free ends of the pressing jaw elements.
  • the pressed pipe end is thereby out of round, which has different disadvantages. For example can by the non-circular cross-section of the compressed pipe the Sealing effect should not be optimal.
  • a pressing tool would be desirable, with the one most perfect centric and ensures round compression at different pipe cross sections is.
  • a pressing tool of the type mentioned is, for example EP 1 036 608 A of the applicant.
  • the pressing tool is designed here as a press loop, the three pressing jaw elements which are hinged together are.
  • This press loop is around the pipe end to be pressed placed and provisionally closed with a strap.
  • a hydraulic drive which on the two outer Pressing jaw elements is applied, the press loop is closed.
  • a similar pressing tool is from the EP 0 671 984 A has become known.
  • a pressing tool which also is designed as a press loop. This has press inserts on, which are kept floating in the press jaws and which are moved during the pressing in the circumferential direction. At the Pressing first come the free ends of the press inserts to the plant, while at the other ends a movement gap remains. This should make it possible to pipes with nominal diameters over 50 to press.
  • this pressing tool is constructive comparatively complex and consists of many individual parts.
  • the invention is based on the object, a pressing tool of called type to create the above-mentioned difficulties avoids and inexpensive to produce with ease of use is.
  • the task is in a generic pressing tool characterized solved that at least one pressing jaw element a support means has, when applied pressing tool and in not yet compressed state on the outside of the object to be pressed bears radially supporting and together during pressing is moved with the pressing jaw elements in the circumferential direction.
  • pressing tool according to the invention When pressing tool according to the invention is to be pressed Object before the pressing process and during the pressing process supported or guided in the opening gap by said support element, so that the object can not move radially. In order to it is ensured that in the opening gap no bulge or protrude. Thus, a centric and round Pressing guaranteed. It has surprisingly been found that with the invention, the force required for pressing force or the energy consumption is much smaller than before. The Pressing can thus be used in particular with a pressing tool Hand drive easier and faster.
  • the support element is attached directly to the pressing jaw element and can as a simple finger-shaped extension of this pressing jaw element be educated. Additional elements and in particular Press inserts and means for moving these press inserts are avoided.
  • the inventive pressing tool is not much more expensive to manufacture than previous ones Pressing tools or press slings.
  • the support means is fixed connected to the pressing jaw member and preferably on this formed.
  • a pressing jaw element is a support element as an extension and the opposite with this cooperating Pressing jaw member has a recess, in which the Extension can enter when closing the pressing tool.
  • the proppant or the extension in cross-section U-shaped is U-shaped.
  • the pressing tool 1 shown in FIG. 1 is a so-called Press sling, the middle pressing jaw element 2 and two having outer pressing jaw elements 3 and 4.
  • the pressing jaw element 2 is with two hinge joints 5 with the other Pressing jaw elements 3 and 4 hingedly connected.
  • a bracket 11 is pivotally mounted, with which the Pressing tool 1 according to Figure 2 are closed provisionally can.
  • the disclosure is also hereby referred to EP 1 036 608 A of Applicant referenced, in which in particular the function of this Ironing 11 is disclosed.
  • the pressing jaw elements 2, 3 and 4 each have an inner side 20, 21 and 22, respectively, which form the pressing surfaces and the with closed pressing tool in cross-section a round and form closed pressing surface.
  • the insides 20, 21 and 22 may have protruding ribs extending in the circumferential direction extend and during the pressing process in the outside of the bury the object to be pressed.
  • the press tool 1 shown is, as mentioned, in particular a Pressing loop. In principle, such a press loop also have more than three pressing jaw elements.
  • the inventive Press tool is not limited to a press sling, but can for example be designed as pressing tongs be, which has only two pressing jaw elements and is closed by hand or motor.
  • the one to be pressed The subject matter is preferably a tube 14 and in particular a pipe of sanitary engineering, basically can with the inventive pressing tool but also other objects be pressed.
  • This support part 8 is part of the Pressing jaw element 3 and in particular integrally formed on this. In principle, this support member 8 could also be otherwise be firmly connected to the pressing jaw element 3.
  • the support part 8 is formed according to Figure 6 U-shaped and has two parallel to each other side wall 10 and one of these bridge-like connecting wall 26. This wall 26 has projecting ribs 18, and is corresponding in the circumferential direction the inside 20 bent in a circle, as the figure 1 recognize leaves.
  • the ribs 18 correspond to ribs 27 of the pressing jaw elements 2, 3 and 4 and each form a continuation of this.
  • the pressing jaw element 4 has at its free end 7 a recess 9, which are formed corresponding to the support part 8 is and which receives this support member 8 in the closed state. If the pressing tool 1 according to FIG. 3 is applied to a tube 14, but not yet closed, the support member 8 engages preferably slightly into the recess 8 a. In the area of Opening gap 19 is thus the pipe to be pressed 14 at his Outside supported by the support member 8 and can during pressing do not dodge radially. If now the pressing tool 1 is closed, Thus, the support member 8 is pushed into the recess 9. The wall 26 slides on the outside 28 along the pipe 14 to be pressed. The thickness of the wall 26 is comparatively small and is for example 1 to 3 mm.
  • the tube 14 is in particular a plastically deformable water pipe with a core layer 14b Aluminum and two layers 14a and 14c bonded thereto made of plastic.

Abstract

A press tool for pipe ends has two press-jaws (2, 3) whose opposite ends (6, 7) form an aperture that, after the pressing operation, is essentially closed. The one of the jaws (3) has an extension (8) that, when the jaws are presented but not closed, rests against and supports the outer face of the pipe end. During the pressing procedure, the extension advances around the pipe outer face. The extension is a finger-shaped element.

Description

Die Erfindung betrifft ein Presswerkzeug, insbesondere zum Verpressen von Rohrenden, mit wenigstens zwei Pressbackenelementen, die mit gegenüberliegenden Enden einen Öffnungsspalt bilden, der nach dem Verpressen im Wesentlichen geschlossen ist.The invention relates to a pressing tool, in particular for pressing of pipe ends, with at least two pressing jaw elements, which form an opening gap with opposite ends, the is essentially closed after pressing.

Presswerkzeuge der genannten Art sind seit langem bekannt und werden insbesondere zum Verpressen von Rohrenden im Sanitärbereich verwendet. Beispielsweise können durch plastisches Verpressen Wasserrohre mit Fittings verbunden werden. Die Pressbacken werden beim Verpressen von Hand oder mit einem hydraulischen Antrieb geschlossen. Beim Pressvorgang wird der Öffnungsspalt zwischen den freien Enden der Pressbackenelemente geschlossen. In der Praxis hat sich nun gezeigt, dass sich beim Verpressen am Rohrende im Bereich des Öffnungsspaltes Aufstauchungen oder Wulste bilden können. Das verpresste Rohrende ist dadurch unrund, was verschiedene Nachteile hat. Beispielsweise kann durch den unrunden Querschnitt des verpressten Rohres die Dichtwirkung nicht optimal sein. Wünschbar wäre somit ein Presswerkzeug, mit dem eine möglichst vollkommende zentrische und runde Verpressung bei unterschiedlichen Rohrquerschnitten gewährleistet ist. Pressing tools of the type mentioned have long been known and especially for pressing pipe ends in the sanitary area used. For example, by plastic compression Water pipes are connected with fittings. The pressing jaws when pressing by hand or with a hydraulic Drive closed. During the pressing process, the opening gap closed between the free ends of the pressing jaw elements. In practice, it has now been shown that at Pressing at the end of the pipe in the area of the opening gap or bulges can form. The pressed pipe end is thereby out of round, which has different disadvantages. For example can by the non-circular cross-section of the compressed pipe the Sealing effect should not be optimal. Thus, a pressing tool would be desirable, with the one most perfect centric and ensures round compression at different pipe cross sections is.

Ein Presswerkzeug der genannten Gattung ist beispielsweise aus der EP 1 036 608 A des Anmelders bekannt geworden. Das Presswerkzeug ist hier als Pressschlinge ausgebildet, die drei Pressbackenelemente aufweist, welche gelenkig miteinander verbunden sind. Diese Pressschlinge wird um das zu verpressende Rohrende gelegt und mit einem Bügel provisorisch geschlossen. Mittels eines hydraulischen Antriebes, welcher an die beiden äusseren Pressbackenelemente angelegt wird, wird die Pressschlinge geschlossen. Ein ähnliches Presswerkzeug ist aus der EP 0 671 984 A bekannt geworden.A pressing tool of the type mentioned is, for example EP 1 036 608 A of the applicant. The pressing tool is designed here as a press loop, the three pressing jaw elements which are hinged together are. This press loop is around the pipe end to be pressed placed and provisionally closed with a strap. By means of a hydraulic drive, which on the two outer Pressing jaw elements is applied, the press loop is closed. A similar pressing tool is from the EP 0 671 984 A has become known.

In der EP 1 208 949 A ist ein Presswerkzeug offenbart, das ebenfalls als Pressschlinge ausgebildet ist. Diese weist Presseinsätze auf, die schwimmend in den Pressbacken gehalten sind und die beim Verpressen in Kreisumfangsrichtung bewegt werden. Beim Pressvorgang kommen zunächst die freien Enden der Presseinsätze zur Anlage, während an den anderen Enden ein Bewegungsspalt verbleibt. Dadurch soll es möglich sein, Rohre mit Nennweiten über 50 zu verpressen. Dieses Presswerkzeug ist jedoch konstruktiv vergleichsweise aufwändig und besteht aus vielen Einzelteilen.In EP 1 208 949 A, a pressing tool is disclosed, which also is designed as a press loop. This has press inserts on, which are kept floating in the press jaws and which are moved during the pressing in the circumferential direction. At the Pressing first come the free ends of the press inserts to the plant, while at the other ends a movement gap remains. This should make it possible to pipes with nominal diameters over 50 to press. However, this pressing tool is constructive comparatively complex and consists of many individual parts.

Der Erfindung liegt die Aufgabe zugrunde, ein Presswerkzeug der genannten Art zu schaffen, das die oben genannten Schwierigkeiten vermeidet und bei einfacher Handhabung kostengünstig herstellbar ist.The invention is based on the object, a pressing tool of called type to create the above-mentioned difficulties avoids and inexpensive to produce with ease of use is.

Die Aufgabe ist bei einem gattungsgemässen Presswerkzeug dadurch gelöst, dass wenigstens ein Pressbackenelement ein Stützmittel aufweist, das bei angelegtem Presswerkzeug und im noch nicht verpressten Zustand an der Aussenseite des zu verpressenden Gegenstandes radial stützend anliegt und beim Verpressen gemeinsam mit dem Pressbackenelemente in Umfangsrichtung verschoben wird. The task is in a generic pressing tool characterized solved that at least one pressing jaw element a support means has, when applied pressing tool and in not yet compressed state on the outside of the object to be pressed bears radially supporting and together during pressing is moved with the pressing jaw elements in the circumferential direction.

Beim erfindungsgemässen Presswerkzeug wird der zu verpressende Gegenstand vor dem Pressvorgang und während des Pressvorganges im Öffnungsspalt vom genannten Stützelement gestützt bzw. geführt, sodass der Gegenstand radial nicht ausweichen kann. Damit ist sichergestellt, dass sich im Öffnungsspalt keine Ausbuchtung oder Ausstülpung bilden kann. Somit ist eine zentrische und runde Verpressung gewährleistet. Es hat sich überraschend gezeigt, dass mit der Erfindung die zum Verpressen erforderliche Kraft bzw. der Energieaufwand wesentlich kleiner ist als bisher. Das Verpressen kann somit insbesondere bei einem Presswerkzeug mit Handantrieb einfacher und schneller erfolgen.When pressing tool according to the invention is to be pressed Object before the pressing process and during the pressing process supported or guided in the opening gap by said support element, so that the object can not move radially. In order to it is ensured that in the opening gap no bulge or protrude. Thus, a centric and round Pressing guaranteed. It has surprisingly been found that with the invention, the force required for pressing force or the energy consumption is much smaller than before. The Pressing can thus be used in particular with a pressing tool Hand drive easier and faster.

Das Stützelement ist direkt am Pressbackenelement befestigt und kann als einfacher fingerförmiger Fortsatz dieses Pressbackenelementes ausgebildet sein. Zusätzliche Elemente und insbesondere Presseinsätze sowie Mittel zum Verschieben dieser Presseinsätze werden dadurch vermieden. Das erfindungsgemässe Presswerkzeug ist in der Herstellung nicht wesentlich teurer als bisherige Presswerkzeuge oder Pressschlingen.The support element is attached directly to the pressing jaw element and can as a simple finger-shaped extension of this pressing jaw element be educated. Additional elements and in particular Press inserts and means for moving these press inserts are avoided. The inventive pressing tool is not much more expensive to manufacture than previous ones Pressing tools or press slings.

Nach einer Weiterbildung der Erfindung ist das Stützmittel fest mit dem Pressbackenelement verbunden und vorzugsweise an diesem angeformt. Eine besonders einfache und praktikable Ausführung ergibt sich dann, wenn ein Pressbackenelement ein Stützelement als Fortsatz und das mit diesem zusammenarbeitende gegenüberliegende Pressbackenelement eine Ausnehmung aufweist, in welche der Fortsatz beim Schliessen des Presswerkzeuges einfahren kann.According to a development of the invention, the support means is fixed connected to the pressing jaw member and preferably on this formed. A particularly simple and practical design arises when a pressing jaw element is a support element as an extension and the opposite with this cooperating Pressing jaw member has a recess, in which the Extension can enter when closing the pressing tool.

Nach einer Weiterbildung der Erfindung ist das Stützmittel bzw. der Fortsatz im Querschnitt U-förmig. According to a development of the invention, the proppant or the extension in cross-section U-shaped.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen, der nachfolgenden Beschreibung sowie der Zeichnung.Further advantageous features emerge from the dependent Claims, the following description and the Drawing.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Figur 1
eine teilweise geschnittene Ansicht eines erfindungsgemässen Presswerkzeuges in geöffnetem Zustand,
Figur 2
eine Ansicht eines erfindungsgemässen Presswerkzeuges, das um ein zu verpressendes Rohrende gelegt ist,
Figur 3
eine Ansicht eines erfindungsgemässen Presswerkzeuges, das um ein zu verpressendes Rohrende gelegt ist sowie ein Antrieb zum Schliessen des Presswerkzeuges,
Figur 4
eine Ansicht gemäss Figur 2, jedoch mit geschlossenem Presswerkzeug und somit nach der Durchführung der Verpressung,
Figur 5
eine Ansicht gemäss Figur 3, jedoch nach dem Pressvorgang und
Figur 6
ein Schnitt entlang der Linie VI-VI der Figur 5.
An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:
FIG. 1
a partially sectioned view of an inventive pressing tool in the open state,
FIG. 2
a view of a novel pressing tool, which is placed around a pipe end to be pressed,
FIG. 3
a view of an inventive pressing tool, which is placed around a pipe end to be pressed and a drive for closing the pressing tool,
FIG. 4
a view according to Figure 2, but with a closed pressing tool and thus after the implementation of the compression,
FIG. 5
a view according to Figure 3, but after the pressing process and
FIG. 6
a section along the line VI-VI of Figure 5.

Das in Figur 1 gezeigte Presswerkzeug 1 ist eine sogenannte Pressschlinge, die ein mittleres Pressbackenelement 2 sowie zwei äussere Pressbackenelemente 3 und 4 aufweist. Das Pressbackenelement 2 ist mit zwei Scharniergelenken 5 mit den anderen Pressbackenelementen 3 und 4 gelenkig verbunden. Am Pressbackenelement 3 ist ein Bügel 11 schwenkbar gelagert, mit dem das Presswerkzeug 1 gemäss Figur 2 provisorisch geschlossen werden kann. Zur Offenbarung wird hier auch auf die EP 1 036 608 A des Anmelders verwiesen, in welcher insbesondere die Funktion dieses Bügels 11 offenbart ist. The pressing tool 1 shown in FIG. 1 is a so-called Press sling, the middle pressing jaw element 2 and two having outer pressing jaw elements 3 and 4. The pressing jaw element 2 is with two hinge joints 5 with the other Pressing jaw elements 3 and 4 hingedly connected. On the pressing jaw element 3, a bracket 11 is pivotally mounted, with which the Pressing tool 1 according to Figure 2 are closed provisionally can. The disclosure is also hereby referred to EP 1 036 608 A of Applicant referenced, in which in particular the function of this Ironing 11 is disclosed.

Die Pressbackenelemente 2, 3 und 4 weisen jeweils eine Innenseite 20, 21 bzw. 22 auf, welche die Pressflächen bilden und die bei geschlossenem Presswerkzeug im Querschnitt eine runde und geschlossene Pressfläche bilden. Die Innenseiten 20, 21 und 22 können vorstehende Rippen aufweisen, die sich in Umfangsrichtung erstrecken und die sich beim Pressvorgang in die Aussenseite des zu verpressenden Gegenstandes eingraben. Durch entsprechende plastische Verformung kann damit beispielsweise das in Figur 2 angedeutete Wasserrohr 14 mit einem Pressfitting 13 verbunden werden.The pressing jaw elements 2, 3 and 4 each have an inner side 20, 21 and 22, respectively, which form the pressing surfaces and the with closed pressing tool in cross-section a round and form closed pressing surface. The insides 20, 21 and 22 may have protruding ribs extending in the circumferential direction extend and during the pressing process in the outside of the bury the object to be pressed. By appropriate plastic deformation can thus, for example, that in Figure 2 indicated water pipe 14 connected to a press fitting 13 become.

Das gezeigte Presswerkzeug 1 ist wie erwähnt insbesondere eine Pressschlinge. Grundsätzlich kann eine solche Pressschlinge auch mehr als drei Pressbackenelemente aufweisen. Das erfindungsgemässe Presswerkzeug ist aber nicht auf eine Pressschlinge beschränkt, sondern kann beispielsweise auch als Presszange ausgebildet werden, welche lediglich zwei Pressbackenelemente aufweist und von Hand oder motorisch geschlossen wird. Der zu verpressende Gegenstand ist vorzugsweise ein Rohr 14 und insbesondere ein Rohr der Sanitärtechnik, grundsätzlich können mit dem erfindungsgemässen Presswerkzeug aber auch andere Gegenstände verpresst werden.The press tool 1 shown is, as mentioned, in particular a Pressing loop. In principle, such a press loop also have more than three pressing jaw elements. The inventive Press tool is not limited to a press sling, but can for example be designed as pressing tongs be, which has only two pressing jaw elements and is closed by hand or motor. The one to be pressed The subject matter is preferably a tube 14 and in particular a pipe of sanitary engineering, basically can with the inventive pressing tool but also other objects be pressed.

Ist das Presswerkzeug 1 gemäss Figur 1 um das Rohr 14 gelegt und mit dem Bügel 11 provisorisch verbunden, so wird die in Figur 3 gezeigte Schliesszange 15 an Nocken 16 der Pressbackenelemente 3 und 4 angelegt und diese wird mit einem hier nicht gezeigten hydraulischen Antrieb geschlossen, indem Rollen 17 zwischen zwei Hebeln 13 der Schliesszange hineingeschoben werden. Die Schliesszange 15 und der genannte hydraulische Antrieb sind handelsübliche Geräte und dem Fachmann gut bekannt. Vor dem Pressvorgang besteht zwischen einer Anschlagfläche 24 des Pressbackenelementes 4 und einer Anschlagfläche 25 des Pressbackenelementes 3 ein Öffnungsspalt 19. Dieser Öffnungsspalt 19 wird beim Verpressen geschlossen, sodass schliesslich die Anschlagflächen 24 und 25 aneinander anliegen. Dieser Öffnungsspalt 19 ist vor dem Verpressen und während des Pressvorganges von einem Stützteil 8 überbrückt, der am freien Ende 6 des Pressbackenelementes 3 angeordnet ist. Dieser Stützteil 8 ist ein Teil des Pressbackenelementes 3 und insbesondere an diesem angeformt. Grundsätzlich könnte dieser Stützteil 8 auch auf andere Weise mit dem Pressbackenelement 3 fest verbunden sein. Der Stützteil 8 ist gemäss Figur 6 U-förmig ausgebildet und weist zwei parallel zueinander verlaufende Seitenwandung 10 und eine diese brückenartig verbindende Wandung 26 auf. Diese Wandung 26 weist vorspringende Rippen 18 auf, und ist in Umfangsrichtung entsprechend der Innenseite 20 kreisförmig gebogen, wie die Figur 1 erkennen lässt. Die Rippen 18 entsprechen Rippen 27 der Pressbackenelemente 2, 3 und 4 und bilden jeweils eine Fortsetzung von diesen.Is the pressing tool 1 according to Figure 1 placed around the tube 14 and provisionally connected to the bracket 11, the in FIG. 3 Locking tool 15 shown on cam 16 of the pressing jaw elements. 3 and 4 created and this is with a not shown here closed hydraulic drive by rolling 17 between two Lever 13 of the closing pliers are pushed. The Locking pliers 15 and said hydraulic drive are commercially available Devices and the expert well known. Before the pressing process exists between a stop surface 24 of the pressing jaw element 4 and a stop surface 25 of the pressing jaw element 3 an opening gap 19. This opening gap 19 is at Pressing closed, so finally the stop surfaces 24 and 25 abut each other. This opening gap 19 is before pressing and during the pressing process of one Supported part 8, which is at the free end 6 of the pressing jaw element 3 is arranged. This support part 8 is part of the Pressing jaw element 3 and in particular integrally formed on this. In principle, this support member 8 could also be otherwise be firmly connected to the pressing jaw element 3. The support part 8 is formed according to Figure 6 U-shaped and has two parallel to each other side wall 10 and one of these bridge-like connecting wall 26. This wall 26 has projecting ribs 18, and is corresponding in the circumferential direction the inside 20 bent in a circle, as the figure 1 recognize leaves. The ribs 18 correspond to ribs 27 of the pressing jaw elements 2, 3 and 4 and each form a continuation of this.

Das Pressbackenelement 4 weist an seinem freien Ende 7 eine Ausnehmung 9 auf, die korrespondierend zum Stützteil 8 ausgebildet ist und welche im geschlossenen Zustand dieses Stützteil 8 aufnimmt. Ist das Presswerkzeug 1 gemäss Figur 3 an ein Rohr 14 angelegt, jedoch noch nicht geschlossen, so greift der Stützteil 8 vorzugsweise geringfügig in die Ausnehmung 8 ein. Im Bereich des Öffnungsspaltes 19 ist somit das zu verpressende Rohr 14 an seiner Aussenseite vom Stützteil 8 gestützt und kann beim Verpressen radial nicht ausweichen. Wird nun das Presswerkzeug 1 geschlossen, so wird der Stützteil 8 in die Ausnehmung 9 hineingeschoben. Die Wandung 26 gleitet hierbei an der Aussenseite 28 des zu verpressenden Rohres 14 entlang. Die Dicke der Wandung 26 ist vergleichsweise klein und beträgt beispielsweise 1 bis 3 mm. The pressing jaw element 4 has at its free end 7 a recess 9, which are formed corresponding to the support part 8 is and which receives this support member 8 in the closed state. If the pressing tool 1 according to FIG. 3 is applied to a tube 14, but not yet closed, the support member 8 engages preferably slightly into the recess 8 a. In the area of Opening gap 19 is thus the pipe to be pressed 14 at his Outside supported by the support member 8 and can during pressing do not dodge radially. If now the pressing tool 1 is closed, Thus, the support member 8 is pushed into the recess 9. The wall 26 slides on the outside 28 along the pipe 14 to be pressed. The thickness of the wall 26 is comparatively small and is for example 1 to 3 mm.

Ist das Presswerkzeug 1 gemäss den Figuren 4 und 5 geschlossen, so ist das Rohr 14 zentrisch und rund verpresst und fest mit dem Pressfitting 13 verbunden. Es ist somit keine Verpressung möglich, bei welcher das Rohr 14 radial ausgebuchtet und sich ein Wulst gebildet hat, der zwischen den Anschlagflächen 24 und 25 verpresst ist. Bei der Verwendung des erfindungsgemässen Presswerkzeuges ist somit gewährleistet, dass der Querschnitt des Rohres 14 kreisrund ist. Entsprechend ist die Innenseite 29 des Rohres 14 im Querschnitt rund und eingelegte und hier nicht gezeigte Dichtungsringe können optimal das Rohr 14 gegenüber dem Pressfitting 13 abdichten. Das Rohr 14 ist insbesondere ein plastisch verformbares Wasserrohr mit einer Kernschicht 14b aus Aluminium und zwei mit dieser verbundenen Schichten 14a und 14c aus Kunststoff.If the pressing tool 1 according to FIGS. 4 and 5 is closed, so the tube 14 is centered and pressed round and firmly with the Press fitting 13 connected. It is therefore no compression possible in which the tube 14 is radially bulged and a Bead has formed between the stop surfaces 24 and 25 is compressed. When using the inventive pressing tool is thus ensured that the cross section of the Tube 14 is circular. Accordingly, the inside 29 of the Tube 14 in cross-section round and inlaid and not shown here Sealing rings can optimally the tube 14 against the Seal press fitting 13. The tube 14 is in particular a plastically deformable water pipe with a core layer 14b Aluminum and two layers 14a and 14c bonded thereto made of plastic.

Versuche haben nun überraschend gezeigt, dass bei der Verwendung des erfindungsgemässen Presswerkzeuges 1 der Kraftaufwand beim Verpressen wesentlich kleiner ist als bei einem vergleichsweisen Presswerkzeug. Der Grund dürfte darin liegen, dass beim genannten runden Verpressen weniger Energie für die plastische Verformung im Bereich des Öffnungsspaltes 19 aufgewendet werden muss. Eine exakte runde Verpressung ohne Ausbuchtungen ist offenbar mit kleinerem Energie- bzw. Kraftaufwand möglich. Experiments have now surprisingly shown that in use of the inventive pressing tool 1 of the effort when Pressing is much smaller than a comparative Pressing tool. The reason may be that in the mentioned round pressing less energy for plastic deformation must be spent in the region of the opening gap 19. An exact round pressing without bulges is obvious possible with less energy or effort.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1.1.
Presswerkzeugpress tool
2.Second
PressbackenelementPress jaw element
3.Third
PressbackenelementPress jaw element
4.4th
PressbackenelementPress jaw element
5.5th
Gelenkjoint
6.6th
EndeThe End
7.7th
EndeThe End
8.8th.
Stützteilsupporting part
9.9th
Ausnehmungrecess
10.10th
SeitenwandSide wall
11.11th
Bügelhanger
12.12th
Leitungmanagement
13.13th
PressfittingPress fitting
14.14th
Rohrpipe
15.15th
SchliesszangeSchliesszange
16.16th
Nockencam
17.17th
Rollenroll
18.18th
Rippenribs
19.19th
Öffnungsspaltopening gap
20.20th
Innenseiteinside
21.21st
Innenseiteinside
22.22nd
Innenseiteinside
23.23rd
Hebellever
24.24th
Anschlagflächestop surface
25.25th
Anschlagflächestop surface
26.26th
Wandungwall
27.27th
Rippenribs
28.28th
Aussenseiteoutside
29.29th
Innenseiteinside

Claims (4)

Presswerkzeug, insbesondere zum Verpressen von Rohrenden, mit wenigstens zwei Pressbackenelemente (2, 3), die mit gegenüberliegenden Enden (6, 7) einen Öffnungsspalt (19) bilden, der nach dem Verpressen im Wesentlichen geschlossen ist, dadurch gekennzeichnet, dass wenigstens ein Pressbackenelement (3) ein Stützmittel (8) aufweist, das im angelegten und noch nicht verpressten Zustand an der Aussenseite (28) des zu verpressenden Gegenstandes radial stützend anliegt und beim Verpressen gemeinsam mit den Pressbackenelementen (2, 3) in Umfangsrichtung verschoben wird.Pressing tool, in particular for pressing pipe ends, with at least two pressing jaw elements (2, 3) forming with opposite ends (6, 7) an opening gap (19) which is substantially closed after pressing, characterized in that at least one pressing jaw element (3) has a support means (8) which bears radially supporting in the applied and not yet pressed state on the outer side (28) of the article to be pressed and is displaced in the circumferential direction during pressing together with the pressing jaw elements (2, 3). Presswerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Stützmittel (8) fest mit den Pressbackenelementen (2, 3) verbunden sind.Press tool according to claim 1, characterized in that the support means (8) are fixedly connected to the pressing jaw elements (2, 3). Presswerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Stützmittel (8) wenigstens durch einen fingerartigen Fortsatz eines Pressbackenelementes (2, 3) gebildet ist.Pressing tool according to claim 1 or 2, characterized in that the support means (8) is formed at least by a finger-like extension of a pressing jaw element (2, 3). Presswerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass wenigstens ein Pressbackenelement (4) an einem Ende eine Ausnehmung (9) aufweist, in die beim Schliessen ein Stützteil (8) der anderen Pressbacke (3) eingreift.Pressing tool according to one of claims 1 to 3, characterized in that at least one pressing jaw element (4) has at one end a recess (9) into which engages a support member (8) of the other pressing jaw (3) during closing.
EP03405848A 2003-11-27 2003-11-27 Press tool Expired - Lifetime EP1535677B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT03405848T ATE372840T1 (en) 2003-11-27 2003-11-27 PRESS TOOL
EP03405848A EP1535677B1 (en) 2003-11-27 2003-11-27 Press tool
DE50308188T DE50308188D1 (en) 2003-11-27 2003-11-27 press tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405848A EP1535677B1 (en) 2003-11-27 2003-11-27 Press tool

Publications (2)

Publication Number Publication Date
EP1535677A1 true EP1535677A1 (en) 2005-06-01
EP1535677B1 EP1535677B1 (en) 2007-09-12

Family

ID=34443148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405848A Expired - Lifetime EP1535677B1 (en) 2003-11-27 2003-11-27 Press tool

Country Status (3)

Country Link
EP (1) EP1535677B1 (en)
AT (1) ATE372840T1 (en)
DE (1) DE50308188D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009009456U1 (en) * 2009-07-15 2010-11-25 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Pressing tool for connecting in particular tubular workpieces
EP2272629A1 (en) * 2009-07-08 2011-01-12 Novopress GmbH Pressen und Presswerkzeuge & Co. KG Press tool and method for pressing in particular tubular workpieces
CN103889659A (en) * 2011-08-19 2014-06-25 古斯塔夫.克劳克有限责任公司 Pressing device
DE202013007496U1 (en) * 2013-08-21 2014-11-28 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Pressing sling for connecting in particular tubular workpieces

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3338908B1 (en) * 2016-12-21 2019-11-20 Von Arx AG Press ring with elongated holes
DE202020102724U1 (en) * 2020-05-14 2021-08-17 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Drive unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6044681A (en) * 1997-03-11 2000-04-04 Gustav Klauke Gmbh Pressing tool
EP1036608A1 (en) * 1999-03-17 2000-09-20 Geberit Technik Ag Latch on a press tool
EP1208949A2 (en) * 2000-10-19 2002-05-29 Gustav Klauke GmbH Crimp pressing tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6044681A (en) * 1997-03-11 2000-04-04 Gustav Klauke Gmbh Pressing tool
EP1036608A1 (en) * 1999-03-17 2000-09-20 Geberit Technik Ag Latch on a press tool
EP1208949A2 (en) * 2000-10-19 2002-05-29 Gustav Klauke GmbH Crimp pressing tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2272629A1 (en) * 2009-07-08 2011-01-12 Novopress GmbH Pressen und Presswerkzeuge & Co. KG Press tool and method for pressing in particular tubular workpieces
DE202009009456U1 (en) * 2009-07-15 2010-11-25 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Pressing tool for connecting in particular tubular workpieces
CN103889659A (en) * 2011-08-19 2014-06-25 古斯塔夫.克劳克有限责任公司 Pressing device
CN103889659B (en) * 2011-08-19 2016-06-01 古斯塔夫.克劳克有限责任公司 Chain type pressing device, for the method for pressing workpiece and the subassembly of press member
DE202013007496U1 (en) * 2013-08-21 2014-11-28 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Pressing sling for connecting in particular tubular workpieces

Also Published As

Publication number Publication date
EP1535677B1 (en) 2007-09-12
ATE372840T1 (en) 2007-09-15
DE50308188D1 (en) 2007-10-25

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