EP2344302B1 - Tool device for connection of a plastic pipe - Google Patents

Tool device for connection of a plastic pipe Download PDF

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Publication number
EP2344302B1
EP2344302B1 EP09736190.1A EP09736190A EP2344302B1 EP 2344302 B1 EP2344302 B1 EP 2344302B1 EP 09736190 A EP09736190 A EP 09736190A EP 2344302 B1 EP2344302 B1 EP 2344302B1
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EP
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Prior art keywords
tool
pipe
movement
sleeve
tool device
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EP09736190.1A
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German (de)
French (fr)
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EP2344302A1 (en
Inventor
Bernd Kaufmann
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Uponor Innovation AB
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Uponor Innovation AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • 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

Definitions

  • the invention relates to a tool device for connecting a plastic pipe, in particular a plastic / metal composite pipe to a fitting with press or sliding sleeve, according to the preamble of independent claims 1 and 2.
  • Such tool devices are from the documents DE 42 38 700 C2 and DE 199 49 797 A1 known.
  • the DE 199 49 797 A1 describes a device with a housing in which a drive is housed, which has a motor and a drive element driven by it. With him one of two pressed parts during the pressing process relative to the other pressing part of a pressing unit is movable. To form the device so that with a structurally simple design and ease of handling a perfect compression is ensured, the device is designed as a power tool. To the housing of the power tool close in succession to the drive element and the press unit. This results in a structurally simple training. The device is suitable for use in the sanitary sector for non-detachable connection of pipes, pipe sections and the like.
  • a device for fastening of connecting elements to pipes with two mutually movable stop plates is known.
  • the invention proposes to provide a spindle drive for the movement of at least one of the stop plates.
  • a lightweight, inexpensive and reliable construction created, which is operable with low handling forces and thus safe to use that it has no hydraulic or pneumatic lines that may have leaks.
  • such a device is suitable for the attachment of electrical drives, in particular for the coupling of existing electrical tools, such as a drill or a cordless screwdriver.
  • a hand tool for the expansion of a pipe end for inserting a fitting and for pressing a sliding sleeve on the pipe and the fitting known.
  • the tool has a replaceable, expandable head for insertion within one end of the tube. Further, the tool has a gripping and pressing unit to grip the fitting and the sliding sleeve and to press the sliding sleeve over the tube and the fitting.
  • an internal sealing press fitting system may be disadvantageous insofar as the support sleeve inserted into the pipe leads to a cross-sectional constriction, which is accompanied by an increase in flow resistance. Therefore, for the connection of plastic pipes and fittings systems are known in which the tube is widened at its end to be connected and the flared tube end is pushed onto the support sleeve of a fitting body. The inner diameter of the support sleeve is substantially equal to the inner diameter of the pipe to be connected. Then it is then on the expanded and located on the support sleeve pipe end axially mounted a sliding sleeve. But it is also possible to realize the axial fixation of the connected pipe end by means of a compression sleeve. An example of such a pipe connection can be found in WO 02/077510 A1 ,
  • Such a widening tool has a plurality of segments which can be moved apart radially, between which a mandrel is centrally inserted, which then leads to the radial disengagement of the widening segments in order to widen a pipe end which has been pushed onto the widening segments.
  • the object of the invention is therefore to provide a tool device for connecting a plastic pipe to a fitting with press or sliding sleeve, wherein the pressing device compensates for the increased assembly costs at least partially.
  • the machine-operable drive element is actuated either for a Rohraufweitwerkmaschine or a tool for a compression sleeve or a sliding sleeve.
  • both tools expansion tool and press sleeve pressing tool or slide sleeve sliding tool
  • the drive element is selectively along a first direction of movement or along a second direction of movement movable.
  • the movement of the drive tool can be translational or rotational. It is crucial that by appropriate Actuation of an actuating element (eg switch or the like) with the drive element either the pipe expanding tool or the press-slide tool can be operated.
  • the drive element is expediently translatory and mechanically movable.
  • the mechanical movement of the drive element is advantageously carried out hydraulically.
  • the hydraulic device required for this purpose has a piston-cylinder unit, wherein the piston is led out of this at two opposite end faces of the cylinder unit to actuate either the pipe expanding tool or the pressing tool or the sliding tool depending on the direction of movement.
  • a drive unit 12 is optionally used for the operation of a pipe expanding tool 14 or a compression sleeve pressing tool 16.
  • the drive unit 12 is a hydraulic drive of a piston-cylinder unit 18 which has a piston 20 and a cylinder 22.
  • the piston 20 has a first piston rod 24 and a second piston rod 26, which are led out of the cylinder 22 at the two opposite end walls 28, 30.
  • the first piston rod 24 has pinch rollers 32 for operating the pressing tool, while the second piston rod 26 is formed as Aufsp Dr Dr Dr Dr Dr Drusdorn 34 which can be moved centrally between Aufweitsegmente 38 of the expansion tool 14.
  • the press and pipe widening tools 16, 14 are commercially available and known tools which will not be discussed further in the context of the description of the invention.
  • the two tools are located at the opposite ends of a tool housing 40, which further comprises a hydraulic pump 42 and a switching valve 44.
  • Fig. 1 In the position of the switching valve 44 according to Fig. 1 can be on activation of the hydraulic pump 42, the piston 20 in the direction of the pressing tool 16 advance.
  • press tool 16 In press tool 16 is a press fitting 46 with support sleeve 48, on this deferred tube end 50 and with the tube end 50 from the outside surrounding compression sleeve 52nd Fig. 2 shows the situation with activated pressing tool 16, wherein the press fitting 46 is compressed.
  • the pipe 50 to be connected may have previously been expanded by means of the expansion tool 14 when using the tool device 10. This is in the FIGS. 3 and 4 shown. This is in accordance with Fig. 3 the switching valve 44 in the position in which the piston 20 is moved in activation of the hydraulic pump 42 in the direction of the pipe expanding tool 14 or its expansion segment 38. In the expanded state of the expansion tool 14, the situation then arises according to Fig. 4 ,
  • FIGS. 5 and 6 an alternatively configured tool device 10 ' is shown, which also has a pipe expansion tool 14, in contrast to the tool device 10 of FIGS. 1 to 4 but is provided with a sliding tool 16 '.
  • the individual components and elements of the tool device 10 ' correspond to those of the tool device 10 or the same, they are in the FIGS. 5 and 6 with the same reference numerals as in the FIGS. 1 to 4 designated.
  • FIGS. 5 and 6 is now for the connection of the expanded tube 50 to the fitting 46 'on the expanded tube 50 axially a sliding sleeve 52' mounted.
  • the sliding tool 16 'on a collar 54 of the fitting 46' encompassing encompassing 56, against which on an outer flange 58 of the sliding sleeve 52 'abutting slide member 60 is pushed, with the aid of the first piston 24.
  • the sliding sleeve 52 'then adjusts the situation according to Fig. 6 represents.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Description

Die Erfindung betrifft eine Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres, insbesondere eines Kunststoff/Metall-Verbundrohres an einem Fitting mit Press- oder Schiebehülse, gemäß dem Oberbegriff der unabhängigen Ansprüche 1 und 2.The invention relates to a tool device for connecting a plastic pipe, in particular a plastic / metal composite pipe to a fitting with press or sliding sleeve, according to the preamble of independent claims 1 and 2.

Derartige werkzeugvorrichtungen sind aus den Druckschriften DE 42 38 700 C2 und DE 199 49 797 A1 bekannt.Such tool devices are from the documents DE 42 38 700 C2 and DE 199 49 797 A1 known.

Die DE 199 49 797 A1 beschreibt eine Vorrichtung mit einem Gehäuse, in dem ein Antrieb untergebracht ist, der einen Motor und ein von ihm angetriebenes Antriebselement aufweist. Mit ihm ist eines von zwei Pressteilen beim Pressvorgang gegenüber dem anderen Pressteil einer Presseinheit bewegbar. Um die Vorrichtung so auszubilden, dass mit ihr bei konstruktiv einfacher Ausbildung und einfacher Handhabung eine einwandfreie Verpressung gewährleistet ist, ist die Vorrichtung als Elektrowerkzeug ausgebildet. An das Gehäuse des Elektrowerkzeuges schließen hintereinander das Antriebselement und die Presseinheit an. Dadurch ergibt sich eine konstruktiv einfache Ausbildung. Die Vorrichtung eignet sich zum Einsatz im sanitären Bereich zum unlösbaren Verbinden von Rohren, Rohrstücken und dergleichen.The DE 199 49 797 A1 describes a device with a housing in which a drive is housed, which has a motor and a drive element driven by it. With him one of two pressed parts during the pressing process relative to the other pressing part of a pressing unit is movable. To form the device so that with a structurally simple design and ease of handling a perfect compression is ensured, the device is designed as a power tool. To the housing of the power tool close in succession to the drive element and the press unit. This results in a structurally simple training. The device is suitable for use in the sanitary sector for non-detachable connection of pipes, pipe sections and the like.

Aus der EP 0 598 173 A2 ist eine Vorrichtung zur Befestigung von verbindungselementen an Rohrleitungen mit zwei zueinander bewegbaren Anschlagplatten bekannt. Die Erfindung schlägt vor, einen Spindelantrieb für die Bewegung zumindest einer der Anschlagplatten vorzusehen. Auf diese Weise wird einerseits eine leichte, preisgünstige und betriebssichere Konstruktion geschaffen, die mit geringen Handhabungskräften bedienbar ist und dadurch bediensicher ist, dass sie keine hydraulischen oder pneumatischen Leitungen aufweist, die Leckagen aufweisen können. Weiterhin eignet sich eine derartige Vorrichtung für die Anbringung elektrischer Antriebe, inbesondere für die Ankopplung von bereits vorhandenen elektrischen Werkzeugen, wie beispielsweise einer Bohrmaschine oder einem Akkuschrauber.From the EP 0 598 173 A2 a device for fastening of connecting elements to pipes with two mutually movable stop plates is known. The invention proposes to provide a spindle drive for the movement of at least one of the stop plates. In this way, on the one hand, a lightweight, inexpensive and reliable construction created, which is operable with low handling forces and thus safe to use that it has no hydraulic or pneumatic lines that may have leaks. Furthermore, such a device is suitable for the attachment of electrical drives, in particular for the coupling of existing electrical tools, such as a drill or a cordless screwdriver.

Aus der US 2003/0204943 A1 ist ein Handwerkzeug für das Aufweiten eines Rohrendes zum Einführen eines Fittings und für das Pressen einer Schiebehülse über das Rohr und den Fitting bekannt. Das Werkzeug weist einen austauschbaren, aufweitbaren Kopf für das Einführen innerhalb eines Endes des Rohres auf. Weiter weist das Werkzeug eine Greif- und Presseinheit auf, um den Fitting und die Schiebehülse zu greifen und um die Schiebehülse über das Rohr und den Fitting zu pressen.From the US 2003/0204943 A1 is a hand tool for the expansion of a pipe end for inserting a fitting and for pressing a sliding sleeve on the pipe and the fitting known. The tool has a replaceable, expandable head for insertion within one end of the tube. Further, the tool has a gripping and pressing unit to grip the fitting and the sliding sleeve and to press the sliding sleeve over the tube and the fitting.

Für den Anschluss von Kunststoffrohren, insbesondere Kunststoff/Metall-Verbundrohren ist es bekannt, sogenannte innendichtende Pressfittingsysteme einzusetzen. Hierbei wird das anzuschließende Rohr auf eine Stützhülse des Fittingkörpers geschoben und mit Hilfe einer das Rohrende umgebenden Presshülse gegen die Stützhülse verpresst. Ein Beispiel für ein derartiges Pressfittingsystem findet sich in der DE 101 37 078 C1 .For the connection of plastic pipes, in particular plastic / metal composite pipes, it is known to use so-called internal sealing Pressfittingsysteme. Here, the pipe to be connected is pushed onto a support sleeve of the fitting body and pressed against the support sleeve by means of a pressing sleeve surrounding the pipe end. An example of such a press fitting system can be found in the DE 101 37 078 C1 ,

Je nach den Nennweiten der anzuschließenden Rohre kann ein innendichtendes Pressfittingsystem insoweit von Nachteil sein, als die in das Rohr eingeschobene Stützhülse zu einer Querschnittsverengung führt, die mit einer Erhöhung der Strömungswiederstände einhergeht. Daher sind für den Anschluss von Kunststoffrohren auch Fittingsysteme bekannt, bei denen das Rohr an seinem anzuschließenden Ende aufgeweitet wird und das so aufgeweitete Rohrende auf die Stützhülse eines Fittingkörpers aufgeschoben wird. Der Innendurchmesser der Stützhülse ist dabei im wesentlichen gleich dem Innendurchmesser des anzuschließenden Rohres. Anschließend wird dann auf das aufgeweitete und auf der Stützhülse befindliche Rohrende axial eine Schiebehülse aufgezogen. Es ist aber auch möglich, die axiale Fixierung des angeschlossenen Rohrendes mit Hilfe einer Presshülse zu realisieren. Ein Beispiel für eine derartige Rohrverbindung findet sich in WO 02/077510 A1 .Depending on the nominal widths of the pipes to be connected, an internal sealing press fitting system may be disadvantageous insofar as the support sleeve inserted into the pipe leads to a cross-sectional constriction, which is accompanied by an increase in flow resistance. Therefore, for the connection of plastic pipes and fittings systems are known in which the tube is widened at its end to be connected and the flared tube end is pushed onto the support sleeve of a fitting body. The inner diameter of the support sleeve is substantially equal to the inner diameter of the pipe to be connected. Then it is then on the expanded and located on the support sleeve pipe end axially mounted a sliding sleeve. But it is also possible to realize the axial fixation of the connected pipe end by means of a compression sleeve. An example of such a pipe connection can be found in WO 02/077510 A1 ,

Ein Beispiel für ein bei Schiebehülsen Fittingsystemen erforderliches Aufweitwerkzeug ist in der EP 1 674 241 B1 angedeutet. Ein derartiges Aufweitwerkzeug weist mehrere radial auseinanderfahrbare Segmente auf, zwischen die zentrisch ein Dorn eingeschoben wird, der dann zum radialen Ausrücken der Aufweitsegmente führt, um ein zuvor auf die Aufweitsegmente aufgeschobenes Rohrende aufzuweiten.An example of a widening tool required in sliding sleeve fitting systems is in the EP 1 674 241 B1 indicated. Such a widening tool has a plurality of segments which can be moved apart radially, between which a mandrel is centrally inserted, which then leads to the radial disengagement of the widening segments in order to widen a pipe end which has been pushed onto the widening segments.

Für die Verpressung von Pressfittingen existieren Verpresswerkzeuge, die ebenfalls maschinell arbeiten (siehe z. B. WO 2004/096499 A1 , EP 0 611 613 B1 und EP 0 504 490 B1 ). Der Montageaufwand zum Anschluss eines Rohres an einem Schiebenhülsenfitting ist also wegen der beiden Montageschritte Aufweitung und Aufschieben beziehungsweise Verpressen erhöht.For the compression of press fittings there are compression tools that also work mechanically (see eg WO 2004/096499 A1 . EP 0 611 613 B1 and EP 0 504 490 B1 ). The assembly effort for connecting a pipe to a push-sleeve fitting is thus increased because of the two assembly steps widening and pushing or pressing.

Aufgabe der Erfindung ist es daher, eine Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres an einen Fitting mit Press- oder Schiebehülse zu schaffen, wobei die Pressvorrichtung den erhöhten Montageaufwand zumindest teilweise kompensiert.The object of the invention is therefore to provide a tool device for connecting a plastic pipe to a fitting with press or sliding sleeve, wherein the pressing device compensates for the increased assembly costs at least partially.

Zur Lösung dieser Aufgabe wird eine Werkzeugvorrichtung gemäß dem Anspruch 1 oder 2 vorgeschlagen. Weitere Ausgestaltungen sind Gegenstand der Unteransprüche.To solve this problem, a tool device according to claim 1 or 2 is proposed. Further embodiments are the subject of the dependent claims.

Somit wird mit der Erfindung eine Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres, insbesondere Kunststoff/Metall-Verbundrohres an einen Fitting mit Press- oder Schiebehülse vorgeschlagen, wobei die Werkzeugvorrichtung versehen ist mit

  • einer Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres, insbesondere Kunststoff/Metall-Verbundrohres, an einen Fitting mit Press- oder Schiebehülse, mit einem Gehäuse,
  • einem maschinell betreibbaren Antriebselement, das wahlweise längs einer ersten Bewegungsrichtung oder längs einer zweiten Bewegungsrichtung bewegbar ist,
  • einem Rohraufweitwerkzeug zum Aufweiten eines auf einer Stützhülse eines Fittings aufschiebbaren Rohrendes, und
  • einem Presshülsen-Presswerkzeug oder einem Schiebehülsen-Schiebewerkzeug zum Pressen einer Presshülse auf das auf die Stützhülse des Fittings aufgeschobene aufgeweitete Rohrende oder zum Aufschieben einer Schiebehülse auf das auf die Stützhülse aufgeschobene aufgeweitete Rohrende,
  • wobei das Antriebselement bei Bewegung längs der ersten Bewegungsrichtung das Rohraufweitwerkzeug und bei Bewegung längs der zweiten Bewegungsrichtung das Presshülsen-Presswerkzeug oder das Schiebehülsen-Schiebewerkzeug betätigt.
Thus, with the invention, a tool device for connecting a plastic pipe, in particular plastic / metal composite pipe to a fitting with press or Sliding sleeve proposed, wherein the tool device is provided with
  • a tool device for connecting a plastic pipe, in particular plastic / metal composite pipe, to a fitting with press or sliding sleeve, with a housing,
  • a mechanically operable drive element which is selectively movable along a first direction of movement or along a second direction of movement,
  • a Rohraufweitwerkzeug for expanding a slidable on a support sleeve of a fitting pipe end, and
  • a compression sleeve pressing tool or a sliding sleeve sliding tool for pressing a compression sleeve onto the expanded tube end pushed onto the support sleeve of the fitting or for pushing a sliding sleeve onto the expanded tube end pushed onto the support sleeve,
  • wherein the drive element actuates the tube expanding tool when moving along the first direction of movement and the pressing sleeve pressing tool or the sliding sleeve pushing tool when moving along the second direction of movement.

Mit der Erfindung wird also ein Kombiwerkzeug vorgeschlagen, dessen maschinell betreibbares Antriebselement wahlweise für ein Rohraufweitwerkzeug oder ein Werkzeug für eine Presshülse beziehungsweise eine Schiebehülse betätigt wird. Hierbei befinden sich beide Werkzeuge (Aufweitwerkzeug und Presshülsen-Presswerkzeug beziehungsweise Schiebenhülsen-Schiebewerkzeug) an/in einem gemeinsamen Gehäuse, an/in dem das Antriebselement wahlweise längs einer ersten Bewegungsrichtung oder längs einer zweiten Bewegungsrichtung bewegbar ist. Die Bewegung des Antriebswerkzeuges kann dabei translatorisch oder rotatorisch erfolgen. Entscheidend ist, dass durch entsprechende Betätigung eines Betätigungselements (z. B. Schalter oder dergleichen) mit dem Antriebselement entweder das Rohraufweitwerkzeug oder das Press-Schiebewerkzeug betrieben werden kann.With the invention, therefore, a combination tool is proposed, the machine-operable drive element is actuated either for a Rohraufweitwerkzeug or a tool for a compression sleeve or a sliding sleeve. In this case, both tools (expansion tool and press sleeve pressing tool or slide sleeve sliding tool) on / in a common housing, on / in which the drive element is selectively along a first direction of movement or along a second direction of movement movable. The movement of the drive tool can be translational or rotational. It is crucial that by appropriate Actuation of an actuating element (eg switch or the like) with the drive element either the pipe expanding tool or the press-slide tool can be operated.

Das Antriebselement ist zweckmäßigerweise translatorisch und maschinell bewegbar. Die maschinelle Bewegung des Antriebselements erfolgt zweckmäßigerweise hydraulisch. Die dazu erforderliche Hydraulikvorrichtung weist eine Kolben-Zylindereinheit auf, wobei der Kolben an zwei gegenüberliegenden Stirnseiten der Zylindereinheit aus dieser herausgeführt ist, um je nach Bewegungsrichtung entweder das Rohraufweitwerkzeug oder das Presswerkzeug beziehungsweise das Schiebewerkzeug zu betätigen.The drive element is expediently translatory and mechanically movable. The mechanical movement of the drive element is advantageously carried out hydraulically. The hydraulic device required for this purpose has a piston-cylinder unit, wherein the piston is led out of this at two opposite end faces of the cylinder unit to actuate either the pipe expanding tool or the pressing tool or the sliding tool depending on the direction of movement.

Die Erfindung wird nachfolgend an Hand mehrerer Ausführungsbeispiele näher beschrieben. Im einzelnen zeigen dabei:

  • Fig. 1 eine schematische Darstellung eines kombinierten Verpress- und Aufweitwerkzeuges in demjenigen Zustand, in dem das Presswerkzeug betrieben werden kann,
  • Fig. 2 eine Darstellung des Presswerkzeuges gemäß Fig. 1 bei betätigtem Presswerkzeug,
  • Fig. 3 eine schematische Darstellung eines kombinierten Verpress- und Aufweitwerkzeuges in demjenigen Zustand, in dem das Aufweitwerkzeug betrieben werden kann,
  • Fig. 4 eine Darstellung des Aufweitwerkzeuges gemäß Fig. 1 bei betätigtem Aufweitwerkzeug,
  • Fig. 5 eine schematische Darstellung eines kombinierten Schiebehülsen- und Aufweitwerkzeuges in demjenigen Zustand, in dem das Schiebehülsenwerkzeug betätigt werden kann, und
  • Fig. 6 eine Darstellung des Schiebehülsenwerkzeugs gemäß Fig. 1 bei betätigtem Schiebehülsenwerkzeug.
The invention will be described in more detail below with reference to several embodiments. In detail, they show:
  • Fig. 1 a schematic representation of a combined grooving and expansion tool in the state in which the pressing tool can be operated,
  • Fig. 2 an illustration of the pressing tool according to Fig. 1 with pressed tool,
  • Fig. 3 a schematic representation of a combined grooving and expansion tool in the state in which the expansion tool can be operated,
  • Fig. 4 a representation of the expansion tool according to Fig. 1 with widening tool,
  • Fig. 5 a schematic representation of a combined sliding sleeve and Aufweitwerkzeuges in the state in which the sliding sleeve tool can be operated, and
  • Fig. 6 a representation of the sliding sleeve tool according to Fig. 1 with activated push sleeve tool.

In den Fign. 1 bis 4 ist ein erstes Ausführungsbeispiel einer Kombi-Werkzeugvorrichtung 10 gezeigt, bei der eine Antriebseinheit 12 wahlweise für den Betrieb eines Rohraufweitwerkzeuges 14 oder eines Presshülsen-Presswerkzeuges 16 genutzt wird. Bei der Antriebseinheit 12 handelt es sich um einen hydraulischen Antrieb einer Kolben-Zylindereinheit 18, die einen Kolben 20 und einen Zylinder 22 aufweist. Der Kolben 20 weist eine erste Kolbenstange 24 und eine zweite Kolbenstange 26 auf, die aus dem Zylinder 22 an dessen beiden gegenüberliegenden Stirnwänden 28, 30 herausgeführt sind. Die erste Kolbenstange 24 weist Andruckrollen 32 zum Betreiben des Presswerkzeuges auf, während die zweite Kolbenstange 26 als Aufspreizdorn 34 ausgebildet ist, der zentrisch zwischen Aufweitsegmente 38 des Aufweitwerkzeuges 14 hineingefahren werden kann. Bei den Press- und Rohraufweitwerkzeugen 16, 14 handelt es sich um an sich handelsübliche und bekannte Werkzeuge, auf die im Rahmen der Beschreibung der Erfindung nicht weiter eingegangen wird. Die beiden Werkzeuge befinden sich an den gegenüberliegenden Enden eines Werkzeuggehäuses 40, das ferner eine Hydraulikpumpe 42 und ein Umschaltventil 44 aufweist.In the FIGS. 1 to 4 a first embodiment of a combined tooling device 10 is shown, in which a drive unit 12 is optionally used for the operation of a pipe expanding tool 14 or a compression sleeve pressing tool 16. The drive unit 12 is a hydraulic drive of a piston-cylinder unit 18 which has a piston 20 and a cylinder 22. The piston 20 has a first piston rod 24 and a second piston rod 26, which are led out of the cylinder 22 at the two opposite end walls 28, 30. The first piston rod 24 has pinch rollers 32 for operating the pressing tool, while the second piston rod 26 is formed as Aufspreizdorn 34 which can be moved centrally between Aufweitsegmente 38 of the expansion tool 14. The press and pipe widening tools 16, 14 are commercially available and known tools which will not be discussed further in the context of the description of the invention. The two tools are located at the opposite ends of a tool housing 40, which further comprises a hydraulic pump 42 and a switching valve 44.

In der Stellung des Umschaltventils 44 gemäß Fig. 1 lässt sich bei Aktivierung der Hydraulikpumpe 42 der Kolben 20 in Richtung auf das Presswerkzeug 16 vorbewegen. Im Presswerkzeug 16 befindet sich ein Pressfitting 46 mit Stützhülse 48, auf diese aufgeschobenem Rohrende 50 und mit das Rohrende 50 von außen umgebender Presshülse 52. Fig. 2 zeigt die Situation bei aktiviertem Presswerkzeug 16, wobei der Pressfitting 46 verpresst ist.In the position of the switching valve 44 according to Fig. 1 can be on activation of the hydraulic pump 42, the piston 20 in the direction of the pressing tool 16 advance. In press tool 16 is a press fitting 46 with support sleeve 48, on this deferred tube end 50 and with the tube end 50 from the outside surrounding compression sleeve 52nd Fig. 2 shows the situation with activated pressing tool 16, wherein the press fitting 46 is compressed.

Das anzuschließende Rohr 50 kann zuvor mit Hilfe des Aufweitwerkzeuges 14 bei Verwendung der Werkzeugvorrichtung 10 aufgeweitet worden sein. Dies ist in den Fign. 3 und 4 dargestellt. Hierzu befindet sich gemäß Fig. 3 das Umschaltventil 44 in derjenigen Position, in der der Kolben 20 bei Aktivierung der Hydraulikpumpe 42 in Richtung auf das Rohraufweitwerkzeug 14 beziehungsweise dessen Aufweitsegment 38 bewegt wird. Im aufgeweiteten Zustand des Aufweitwerkzeuges 14 ergibt sich dann die Situation gemäß Fig. 4.The pipe 50 to be connected may have previously been expanded by means of the expansion tool 14 when using the tool device 10. This is in the FIGS. 3 and 4 shown. This is in accordance with Fig. 3 the switching valve 44 in the position in which the piston 20 is moved in activation of the hydraulic pump 42 in the direction of the pipe expanding tool 14 or its expansion segment 38. In the expanded state of the expansion tool 14, the situation then arises according to Fig. 4 ,

In den Fign. 5 und 6 ist eine alternativ ausgestaltete Werkzeugvorrichtung 10' gezeigt, die ebenfalls über ein Rohraufweitwerkzeug 14 verfügt, im Unterschied zur Werkzeugvorrichtung 10 der Fign. 1 bis 4 jedoch mit einem Schiebewerkzeug 16' versehen ist. Soweit die einzelnen Bestandteile und Elemente der Werkzeugvorrichtung 10' denjenigen der Werkzeugvorrichtung 10 entsprechen beziehungsweise gleichen, sind sie in den Fign. 5 und 6 mit den gleichen Bezugszeichen wie in den Fign. 1 bis 4 bezeichnet.In the FIGS. 5 and 6 an alternatively configured tool device 10 'is shown, which also has a pipe expansion tool 14, in contrast to the tool device 10 of FIGS. 1 to 4 but is provided with a sliding tool 16 '. As far as the individual components and elements of the tool device 10 'correspond to those of the tool device 10 or the same, they are in the FIGS. 5 and 6 with the same reference numerals as in the FIGS. 1 to 4 designated.

Im Ausführungsbeispiel der Fign. 5 und 6 wird nun für den Anschluss des aufgeweiteten Rohres 50 an den Fitting 46' auf das aufgeweitete Rohr 50 axial eine Schiebehülse 52' aufgezogen. Hierzu weist das Schiebewerkzeug 16' ein einen Bund 54 des Fittings 46' umgreifendes Umgreifelement 56 auf, gegen das ein an einem Außenflansch 58 der Schiebehülse 52' anliegendes Schiebeelement 60 geschoben wird, und zwar mit Hilfe des ersten Kolbens 24. Im vollständig aufgeschobenen Zustand der Schiebehülse 52' stellt sich dann die Situation gemäß Fig. 6 dar.In the embodiment of FIGS. 5 and 6 is now for the connection of the expanded tube 50 to the fitting 46 'on the expanded tube 50 axially a sliding sleeve 52' mounted. For this purpose, the sliding tool 16 'on a collar 54 of the fitting 46' encompassing encompassing 56, against which on an outer flange 58 of the sliding sleeve 52 'abutting slide member 60 is pushed, with the aid of the first piston 24. In the fully pushed state the sliding sleeve 52 'then adjusts the situation according to Fig. 6 represents.

Claims (7)

  1. Tool device for connection of a plastic pipe, especially a composite plastic/metal pipe, to a fitting having a compression sleeve, the tool device comprising
    - a housing (40),
    - a pipe expanding tool (14) for expanding a pipe end (50) that can be slid onto a supporting sleeve (48) of a fitting (46) and
    - a compression sleeve pressing tool (16) for pressing a compression sleeve (52) onto the expanded pipe end (50) pushed onto the supporting sleeve (48) of the fitting (46'),
    wherein
    - the tool device has a mechanically drivable drive element (20), which can be displaced selectively along a first direction of movement or along a second direction of movement and
    - the drive element (20) actuating the pipe expanding tool (14) in the case of movement along the first direction of movement and actuating the compression sleeve pressing tool (16) in the case of movement along the second direction of movement.
  2. Tool device for connection of a plastic pipe, especially a composite plastic/metal pipe, to a fitting having a sliding sleeve, the tool device comprising
    - a housing (40),
    - a pipe expanding tool (14) for expanding a pipe end (50) that can be slid onto a supporting sleeve (48) of a fitting (46) and
    - a sliding sleeve sliding tool (16') for sliding a sliding sleeve (52') onto the expanded pipe end (50) slid onto the supporting sleeve (48),
    wherein
    - the tool device has a mechanically drivable drive element (20), which can be displaced selectively along a first direction of movement or along a second direction of movement and
    - the drive element (20) actuating the pipe expanding tool (14) in the case of movement along the first direction of movement and actuating the sliding sleeve sliding tool (16') in the case of movement along the second direction of movement.
  3. Tool device according to either of Claims 1 and 2, characterized in that the drive element (20) can be mechanically moved in a translatory manner.
  4. Tool device according to one of Claims 1 to 3, characterized in that the driving element can be moved hydraulically.
  5. Tool device according to Claim 4, characterized in that the drive element (20) is formed as a piston of a hydraulic piston-cylinder unit (18), the piston having a first and a second piston rod (24, 26), which are respectively led out from opposite end walls (28, 30) of the piston-cylinder unit (18).
  6. Tool device according to Claim 5, characterized in that the first piston rod (24, 26) has pressing rollers (32) for operating the pressing tool (16) or sliding tool (16').
  7. Tool device according to either of Claims 5 and 6, characterized in that the second piston rod (26) is formed as a spreading mandrel (34), which can be moved in centrally between expanding segments (38) of the pipe expanding tool (14).
EP09736190.1A 2008-10-10 2009-10-08 Tool device for connection of a plastic pipe Active EP2344302B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008051284A DE102008051284B3 (en) 2008-10-10 2008-10-10 Tool device for connecting a plastic pipe
PCT/EP2009/063112 WO2010040812A1 (en) 2008-10-10 2009-10-08 Tool device for connection of a plastic pipe

Publications (2)

Publication Number Publication Date
EP2344302A1 EP2344302A1 (en) 2011-07-20
EP2344302B1 true EP2344302B1 (en) 2013-07-03

Family

ID=41478873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736190.1A Active EP2344302B1 (en) 2008-10-10 2009-10-08 Tool device for connection of a plastic pipe

Country Status (5)

Country Link
US (1) US20110219594A1 (en)
EP (1) EP2344302B1 (en)
DE (1) DE102008051284B3 (en)
ES (1) ES2427195T3 (en)
WO (1) WO2010040812A1 (en)

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Also Published As

Publication number Publication date
ES2427195T3 (en) 2013-10-29
WO2010040812A1 (en) 2010-04-15
DE102008051284B3 (en) 2010-06-02
EP2344302A1 (en) 2011-07-20
US20110219594A1 (en) 2011-09-15

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