EP1535677B1 - Press tool - Google Patents

Press tool Download PDF

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Publication number
EP1535677B1
EP1535677B1 EP03405848A EP03405848A EP1535677B1 EP 1535677 B1 EP1535677 B1 EP 1535677B1 EP 03405848 A EP03405848 A EP 03405848A EP 03405848 A EP03405848 A EP 03405848A EP 1535677 B1 EP1535677 B1 EP 1535677B1
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EP
European Patent Office
Prior art keywords
pressing
press
tool
pressing jaw
during
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.)
Expired - Lifetime
Application number
EP03405848A
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German (de)
French (fr)
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EP1535677A1 (en
Inventor
Rudolf Allemann
Abdullah Oengören
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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.)
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Publication date
Application filed by Geberit Technik AG filed Critical Geberit Technik AG
Priority to DE50308188T priority Critical patent/DE50308188D1/en
Priority to AT03405848T priority patent/ATE372840T1/en
Priority to EP03405848A priority patent/EP1535677B1/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 according to the preamble of claim 1.
  • Pressing tools of the type mentioned have long been known and are used in particular for pressing pipe ends in the sanitary area.
  • plastic compression water pipes can be connected to fittings.
  • the pressing jaws are closed during pressing by hand or with a hydraulic drive.
  • the opening gap between the free ends of the pressing jaw elements is closed.
  • the sealing effect can not be optimal due to the non-circular cross-section of the compressed tube. Desirable would thus be a pressing tool, with the most perfect centric and round compression is guaranteed at different pipe cross-sections.
  • the generic US-A-6,044,681 discloses a pressing tool in which a pressing jaw has a wedge-shaped projection, which when pressed into a corresponding recess of another Pressing jaw retracts.
  • the wedge-shaped projection and the corresponding recess serve to center the cooperating pressing jaws during pressing.
  • the pressing tool is from the EP 1 036 608 A have become known to the applicant.
  • the pressing tool is designed here as a press loop, which has three pressing jaw elements, which are hinged together. This press sling is placed around the pipe end to be pressed and closed provisionally with a bracket. By means of a hydraulic drive, which is applied to the two outer die elements, the press loop is closed.
  • a similar pressing tool is from the EP 0 671 984 A known.
  • a pressing tool which is also designed as a press loop.
  • This has press inserts, which are held in a floating manner in the press jaws and which are moved during the pressing in the circumferential direction. During the pressing process, first the free ends of the press inserts come to rest, while at the other ends a movement gap remains. This should make it possible to press pipes with nominal diameters over 50.
  • this press tool is structurally relatively complex and consists of many individual parts.
  • the invention has for its object to provide a pressing tool of the type mentioned, which avoids the difficulties mentioned above and is inexpensive to produce with ease of use.
  • the article to be compacted is supported or guided by the abovementioned supporting element before the pressing process and during the pressing process in the opening gap, so that the object can not deflect radially. This ensures that no bulge or protuberance can form in the opening gap. Thus, a centric and round compression is 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 done easier and faster, especially in a hand-held pressing tool.
  • the support element is designed as a finger-shaped extension of this pressing jaw element. Additional elements and in particular press inserts and means for moving these press inserts are thereby avoided.
  • the inventive pressing tool is not significantly more expensive to manufacture than previous pressing tools or press slings.
  • the support means is firmly connected to the pressing jaw element and preferably formed on this.
  • the support means or the extension in cross-section is U-shaped.
  • the pressing tool 1 shown in FIG. 1 is a so-called pressing loop which has a middle pressing jaw element 2 and two outer pressing jaw elements 3 and 4.
  • the pressing jaw element 2 is articulated with two hinge joints 5 with the other pressing jaw elements 3 and 4.
  • a bracket 11 is pivotally mounted, with which the pressing tool 1 can be provisionally closed according to Figure 2.
  • the revelation is here on the EP 1 036 608 A referred to by the applicant, in which in particular the function of this bracket 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 which form a round and closed pressing surface in cross section when the pressing tool is closed.
  • the inner sides 20, 21 and 22 may have projecting ribs which extend in the circumferential direction and which dig during the pressing process in the outside of the object to be pressed.
  • the press tool 1 shown is, as mentioned, in particular a press sling. In principle, such a press sling can also have more than three pressing jaw elements.
  • the inventive pressing tool is not limited to a press sling, but can for example be formed as a pressing tongs, which has only two pressing jaw elements and is closed by hand or motor.
  • the object to be compacted is preferably a pipe 14 and in particular a pipe of the sanitary engineering, in principle, however, other objects can be pressed with the inventive pressing tool.
  • the closing pliers 15 shown in FIG. 3 are applied to cams 16 of the pressing block elements 3 and 4 and this is closed by a hydraulic drive, not shown here. by rollers 17 between two levers 13 of the closing pliers are pushed.
  • the closing pliers 15 and said hydraulic drive are commercially available devices and well known to those skilled in the art.
  • an opening gap 19 is closed during pressing, so finally the abutment surfaces 24 and 25 abut each other.
  • This opening gap 19 is bridged by a support part 8 before pressing and during the pressing process, which is arranged at the free end 6 of the pressing jaw element 3.
  • This support member 8 is a part of the pressing jaw element 3 and in particular integrally formed thereon. In principle, this support member 8 could be firmly connected in other ways with the pressing jaw member 3.
  • the support member 8 is formed according to Figure 6 U-shaped and has two mutually parallel side wall 10 and this bridge-like connecting wall 26.
  • This wall 26 has projecting ribs 18, and is circular in the circumferential direction corresponding to the inner side 20, as shown in FIG. 1.
  • the ribs 18 correspond to ribs 27 of the pressing jaw elements 2, 3 and 4 and each form a continuation of these.
  • the pressing jaw element 4 has at its free end 7 a recess 9 which is formed corresponding to the support member 8 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 supporting part 8 preferably engages slightly into the recess 9. In the region of the opening gap 19, the pipe 14 to be pressed is thus supported on its outer side by the support part 8 and can not yield radially during pressing. Now, if the pressing tool 1 is closed, the support member 8 is pushed into the recess 9. The wall 26 slides along the outside 28 of 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 centrally and roundly compressed and firmly connected to the press fitting 13. There is thus no compression possible, in which the tube 14 is radially bulged and a bead has formed, which is pressed between the stop surfaces 24 and 25.
  • the inventive pressing tool is thus ensured that the cross section of the tube 14 is circular.
  • the inner side 29 of the tube 14 is round in cross-section and inserted and not shown sealing rings can optimally seal the tube 14 against the press fitting 13.
  • the tube 14 is in particular a plastically deformable water tube with a core layer 14b of aluminum and two layers 14a and 14c of plastic connected thereto.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Press Drives And Press Lines (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

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 nach dem Oberbegriff des Anspruchs 1.The invention relates to a pressing tool according to the preamble of claim 1.

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 vollkommene zentrische und runde Verpressung bei unterschiedlichen Rohrquerschnitten gewährleistet ist.Pressing tools of the type mentioned have long been known and are used in particular for pressing pipe ends in the sanitary area. For example, by plastic compression, water pipes can be connected to fittings. The pressing jaws are closed during pressing by hand or with a hydraulic drive. During the pressing process, the opening gap between the free ends of the pressing jaw elements is closed. In practice, it has now been found that when pressing on the pipe end in the region of the opening gap can form upsets or beads. The compressed pipe end is out of round, which has several disadvantages. For example, the sealing effect can not be optimal due to the non-circular cross-section of the compressed tube. Desirable would thus be a pressing tool, with the most perfect centric and round compression is guaranteed at different pipe cross-sections.

Die gattungsbildende US-A-6,044,681 offenbart ein Presswerkzeug, bei dem eine Pressbacke einen keilförmigen Ansatz aufweist, der beim Verpressen in eine korrespondierende Ausnehmung einer anderen Pressbacke einfährt. Der keilförmige Ansatz und die korrespondierende Ausnehmung dienen zur Zentrierung der zusammenarbeitenden Pressbacken beim Verpressen.The generic US-A-6,044,681 discloses a pressing tool in which a pressing jaw has a wedge-shaped projection, which when pressed into a corresponding recess of another Pressing jaw retracts. The wedge-shaped projection and the corresponding recess serve to center the cooperating pressing jaws during pressing.

Ein weiteres Presswerkzeug ist 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.Another pressing tool is from the EP 1 036 608 A have become known to the applicant. The pressing tool is designed here as a press loop, which has three pressing jaw elements, which are hinged together. This press sling is placed around the pipe end to be pressed and closed provisionally with a bracket. By means of a hydraulic drive, which is applied to the two outer die elements, the press loop is closed. A similar pressing tool is from the EP 0 671 984 A 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 the EP 1 208 949 A is disclosed a pressing tool, which is also designed as a press loop. This has press inserts, which are held in a floating manner in the press jaws and which are moved during the pressing in the circumferential direction. During the pressing process, first the free ends of the press inserts come to rest, while at the other ends a movement gap remains. This should make it possible to press pipes with nominal diameters over 50. However, this press tool is structurally relatively 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 has for its object to provide a pressing tool of the type mentioned, which avoids the difficulties mentioned above and is inexpensive to produce with ease of use.

Die Aufgabe ist durch ein Presswerkzeug gemäss Anspruch 1 gelöst.The problem is solved by a pressing tool according to claim 1.

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.In the case of the pressing tool according to the invention, the article to be compacted is supported or guided by the abovementioned supporting element before the pressing process and during the pressing process in the opening gap, so that the object can not deflect radially. This ensures that no bulge or protuberance can form in the opening gap. Thus, a centric and round compression is 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 done easier and faster, especially in a hand-held pressing tool.

Das Stützelement ist als fingerförmiger Fortsatz dieses Pressbackenelementes ausgebildet. 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 designed as a finger-shaped extension of this pressing jaw element. Additional elements and in particular press inserts and means for moving these press inserts are thereby avoided. The inventive pressing tool is not significantly more expensive to manufacture than previous 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 firmly connected to the pressing jaw element and preferably formed on this. A particularly simple and practical design results when a pressing jaw element has a support element as an extension and the cooperating with this opposite pressing jaw element has a recess into 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 support means or the extension in cross-section is 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 drawings.

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 pressing loop which has a middle pressing jaw element 2 and two outer pressing jaw elements 3 and 4. The pressing jaw element 2 is articulated with two hinge joints 5 with the other pressing jaw elements 3 and 4. At the pressing jaw element 3, a bracket 11 is pivotally mounted, with which the pressing tool 1 can be provisionally closed according to Figure 2. The revelation is here on the EP 1 036 608 A referred to by the applicant, in which in particular the function of this bracket 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 which form a round and closed pressing surface in cross section when the pressing tool is closed. The inner sides 20, 21 and 22 may have projecting ribs which extend in the circumferential direction and which dig during the pressing process in the outside of the object to be pressed. By appropriate plastic deformation so that, for example, indicated in Figure 2 water pipe 14 are connected to a press fitting 13.

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 press sling. In principle, such a press sling can also have more than three pressing jaw elements. The inventive pressing tool is not limited to a press sling, but can for example be formed as a pressing tongs, which has only two pressing jaw elements and is closed by hand or motor. The object to be compacted is preferably a pipe 14 and in particular a pipe of the sanitary engineering, in principle, however, other objects can be pressed with the inventive pressing tool.

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.If the pressing tool 1 according to FIG. 1 is placed around the tube 14 and provisionally connected to the bracket 11, then the closing pliers 15 shown in FIG. 3 are applied to cams 16 of the pressing block elements 3 and 4 and this is closed by a hydraulic drive, not shown here. by rollers 17 between two levers 13 of the closing pliers are pushed. The closing pliers 15 and said hydraulic drive are commercially available devices and well known to those skilled in the art. 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 closed during pressing, so finally the abutment surfaces 24 and 25 abut each other. This opening gap 19 is bridged by a support part 8 before pressing and during the pressing process, which is arranged at the free end 6 of the pressing jaw element 3. This support member 8 is a part of the pressing jaw element 3 and in particular integrally formed thereon. In principle, this support member 8 could be firmly connected in other ways with the pressing jaw member 3. The support member 8 is formed according to Figure 6 U-shaped and has two mutually parallel side wall 10 and this bridge-like connecting wall 26. This wall 26 has projecting ribs 18, and is circular in the circumferential direction corresponding to the inner side 20, as shown in FIG. 1. The ribs 18 correspond to ribs 27 of the pressing jaw elements 2, 3 and 4 and each form a continuation of these.

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 9 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 is formed corresponding to the support member 8 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 supporting part 8 preferably engages slightly into the recess 9. In the region of the opening gap 19, the pipe 14 to be pressed is thus supported on its outer side by the support part 8 and can not yield radially during pressing. Now, if the pressing tool 1 is closed, the support member 8 is pushed into the recess 9. The wall 26 slides along the outside 28 of 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, the tube 14 is centrally and roundly compressed and firmly connected to the press fitting 13. There is thus no compression possible, in which the tube 14 is radially bulged and a bead has formed, which is pressed between the stop surfaces 24 and 25. When using the inventive pressing tool is thus ensured that the cross section of the tube 14 is circular. Correspondingly, the inner side 29 of the tube 14 is round in cross-section and inserted and not shown sealing rings can optimally seal the tube 14 against the press fitting 13. The tube 14 is in particular a plastically deformable water tube with a core layer 14b of aluminum and two layers 14a and 14c of plastic connected thereto.

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 when using the inventive pressing tool 1, the force required during pressing is substantially smaller than in a comparative pressing tool. The reason probably lies in the fact that less energy has to be expended for the plastic deformation in the region of the opening gap 19 during said round pressing. An exact round pressing without bulges is apparently 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 (3)

  1. Pressing tool, in particular for pressing pipe ends, comprising at least two pressing jaw elements (2, 3) which, by means of opposing ends (6, 7), constitute an opening gap (19) which is substantially closed after the pressing operation, wherein at least one pressing jaw element (3) has a supporting means (8) which, when in the applied but not yet pressed state, bears in a radially supporting manner on the outside (28) of the object to be pressed and, during the pressing operation, is displaced in the circumferential direction together with the pressing jaw elements (2, 3), characterized in that the supporting means (8) is constituted at least by a finger-type extension of a pressing jaw element (2, 3), which extension spans the opening gap (19) on the inside of the pressing jaw elements (2, 3) before and during the pressing operation.
  2. Pressing tool according to Claim 1, characterized in that the supporting means (8) is fixedly connected to the pressing jaw elements (2, 3).
  3. Pressing tool according to either of Claims 1 or 2, characterized in that at least one pressing jaw element (4) has, at one end, a recess (9) in which a supporting part (8) of the other pressing jaw (3) engages during the closing operation.
EP03405848A 2003-11-27 2003-11-27 Press tool Expired - Lifetime EP1535677B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50308188T DE50308188D1 (en) 2003-11-27 2003-11-27 press tool
AT03405848T ATE372840T1 (en) 2003-11-27 2003-11-27 PRESS TOOL
EP03405848A EP1535677B1 (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 EP1535677A1 (en) 2005-06-01
EP1535677B1 true 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032113A1 (en) * 2009-07-08 2011-01-13 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Pressing tool and method for pressing in particular tubular workpieces
CN110099759A (en) * 2016-12-21 2019-08-06 沃恩阿克斯公开股份有限公司 Pressure ring with elongated hole
WO2021228556A1 (en) * 2020-05-14 2021-11-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Drive unit for a press collar

Families Citing this family (3)

* 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
DE102011052852A1 (en) * 2011-08-19 2013-02-21 Gustav Klauke Gmbh 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040178A1 (en) * 1997-03-11 1998-09-17 Gustav Klauke Gmbh Pressing tool
DE50002511D1 (en) * 1999-03-17 2003-07-17 Geberit Technik Ag Closure on a press tool
DE10107579B4 (en) * 2000-10-19 2012-04-26 Gustav Klauke Gmbh Pressing tool for pressing pipe ends and press insert for a pressing jaw of a pressing tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032113A1 (en) * 2009-07-08 2011-01-13 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Pressing tool and method for pressing in particular tubular workpieces
DE102009032113B4 (en) * 2009-07-08 2011-06-01 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Pressing tool and method for pressing in particular tubular workpieces
CN110099759A (en) * 2016-12-21 2019-08-06 沃恩阿克斯公开股份有限公司 Pressure ring with elongated hole
WO2021228556A1 (en) * 2020-05-14 2021-11-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Drive unit for a press collar

Also Published As

Publication number Publication date
EP1535677A1 (en) 2005-06-01
ATE372840T1 (en) 2007-09-15
DE50308188D1 (en) 2007-10-25

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