EP2123404A1 - Handheld press device - Google Patents

Handheld press device Download PDF

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Publication number
EP2123404A1
EP2123404A1 EP09006651A EP09006651A EP2123404A1 EP 2123404 A1 EP2123404 A1 EP 2123404A1 EP 09006651 A EP09006651 A EP 09006651A EP 09006651 A EP09006651 A EP 09006651A EP 2123404 A1 EP2123404 A1 EP 2123404A1
Authority
EP
European Patent Office
Prior art keywords
pressing
overlap
marking
final
pressing device
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
EP09006651A
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German (de)
French (fr)
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EP2123404B1 (en
Inventor
Bernd Weck
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.)
Novopress GmbH Pressen und Presswerkzeuge and Co KG
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Novopress GmbH Pressen und Presswerkzeuge and Co KG
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Publication of EP2123404A1 publication Critical patent/EP2123404A1/en
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Publication of EP2123404B1 publication Critical patent/EP2123404B1/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 hand-held pressing device with a drive unit and an attached pressing tool, wherein the pressing device has at least two device parts which are movable relative to each other between a starting position and a final pressing position and overlap such that their degree of overlap in the movement between the starting position and End position changes, wherein a display device is provided, via which the achievement or failure of the final press position is visually determined.
  • the pressing is done by means of pressing devices, which consists of a drive unit and a coupled thereto Press tool consist. Examples are the DE 10 2006 003 044 A1 . EP 0 627 273 B1 . DE 196 31 019 A1 refer to.
  • the pressing devices have a drive unit, at the end of a pressing tool is interchangeably coupled, which is formed in many cases in the manner of a pressing tongs.
  • the pressing tool has two mirror-image running and arranged pressing lever, which are mounted on a holder about two parallel pivot axes so pivotally that the pressing lever from a starting position in a final press position and vice versa are pivotable.
  • the pressing levers protrude into the range of movement of an actuating punch, which is part of the drive unit and which is linearly movable by means of a drive between the two pressing levers so that it spreads the pressure levers in this area with the result that they themselves approach each other at the free ends.
  • semicircular pressing jaws are formed, which are intended for direct contact with the workpiece to be compressed and come into mutual contact in the final pressing position and thereby form a substantially closed pressing space.
  • the free ends of the pressing lever can also be connected to other pressing elements, such as a pressing jaws provided with press loop, as in the EP 0 627 273 B1 and the FIG. 1 from DE 10 2006 003 044 A1 is disclosed, or for Axialverpressen pipe ends (see. DE 203 04 017 U1 ).
  • the pressing devices are usually delivered with a set of several pressing tools adapted to the respective nominal diameter of the tube ends or pressfittings.
  • the appropriate pressing tool is coupled to the drive device.
  • electromechanical drive the rotational movement of an electric motor is converted via a spindle gear in a linear movement of the actuating punch.
  • electrohydraulic drive the electric motor drives a hydraulic pump, the hydraulic oil conveyed thereby being supplied to a cylinder-piston unit whose piston rod forms the actuating punch.
  • the drive in the drive unit is moved into its end position.
  • this does not necessarily achieve the desired and predetermined final press position of the press jaws.
  • the occurring forces lead to elastic deformations on the pressing levers on which the pressing jaws sit.
  • the press jaws, press fittings and pipes are subject to tolerances that lead to unfavorable summation that when reaching the end position of the drive is not given sufficient compression.
  • the pressing jaws are subjected to a pressing force which is designed with the addition of a sufficiently large safety factor so that in the normal case sufficient compression and thus tight connection is achieved.
  • a trigger member is responsible as a switching element, for example, in rotating drives, a torque clutch in an electro-hydraulic drive, a pressure relief valve and electrically operated pressing devices, an overcurrent release. Because the driving force is not measured directly, but a converted quantity (torque, pressure or current), which represents only a fraction of the size of the end force, any inaccuracy in the production of the trigger and any wear has a major impact on the final power of the drive and thus ultimately on the press quality. In addition, the ambient and operating temperature has an influence on the pressing behavior. It is particularly treacherous that the change in the end force, especially due to wear and tear occurs cautiously and is therefore usually not noticed.
  • the invention has the object of providing a pressing device of the type mentioned in such a way that the display device is as simple, inexpensive and damage-resistant.
  • the basic idea of the invention is therefore to attach a marking to one of the parts of the device moving relative to one another during the pressing process - several such markings can also be provided and they can also be arranged on different parts of the device - in such an arrangement and areal extent that is visually determined by the position and / or the degree of coverage of the mark, whether the final pressing position is reached or not.
  • a marking is easily attachable to the device part, for example in the form of a color layer, a glued or riveted plate, a foil, an embossing, milled or drilled, and has no moving parts.
  • the marking is therefore inexpensive to produce and relatively damage-resistant, especially if it is arranged sunk. If several markings are provided, it is not mandatory that they all belong only to one of the alternatives specified in claim 1. Rather, they may also belong to different alternatives, so that in the final press position, for example, one marking is completely outside and another completely within the overlap.
  • the mark in the final press position is only partially covered by the overlap, it should be in be completely outside the overlap or completely covered by the overlap. If the marking or one of the markings is completely outside the overlap when the final press position is reached, the end press position can be recognized even if the mark is spaced from the overlap, in particular if the distance is equal to the extent of the mark in the spacing direction. A better recognizability is given, however, if the mark is in the final pressing position adjacent to the overlap. In this case, even in the starting position, the marking can lie completely outside the overlap, which is favorable for the recognizability of the final pressing position, or be completely covered by the overlap. If the marking is completely covered by the overlap only in the final press position, it should be completely outside the overlap in the starting position. However, this is not mandatory.
  • the marking changes its extension transversely to the direction of movement in the relative movement of the device parts at the border to the overlap, so that the progress of the compression is recognizable by the change in the extent of the marking transversely to the direction of movement.
  • the mark may be formed as a triangle, circle or trapezoid. If the mark is formed as a triangle, should be a corner in the final press position adjacent to the overlap. The corner should include an acute angle.
  • the marking is preferably attached to the pressing tool itself, so that the indication by the marking as close as possible to the pressing jaws and thus intermediate influences are minimized.
  • one of the overlapping device parts may be part of the tool and the other device part part of the drive unit.
  • the pressing tool in a conventional manner has two mirror-image formed and arranged drive lever which are pivotally mounted on a holder about two parallel axes, wherein the holder is connected to the drive unit via a coupling unit which partially overlaps the drive lever, should at least one of Press lever have the mark in the coupling unit.
  • the press apparatus shown is typically used for the compression of press fittings with pipe ends to connect two pipe ends. It has a drive housing 2, in which a drive device is encapsulated and installed.
  • the drive housing 2 runs right into a coupling fork 3, which has two spaced, in cross-section semicircular fork arms 4, 5.
  • the fork arms 4, 5 comprise on both sides a pressing tool 6. It has a holder with two T-shaped holding plates 7, 8, which - in the front view according to FIG. 2 seen - are arranged exactly behind each other and congruent.
  • the holding plates 7, 8 protrude partially into the space between the two fork arms 4, 5 and are held there by means of a connecting pin 9 on the fork arms 4, 5.
  • the connecting pin 9 passes through both fork arms 4, 5 and the holding plates 7, 8 and connects in this way the pressing tool 6 with the drive housing 2.
  • the connecting pin 9 can be removed by hand, so that the pressing tool 6 shown removed from the drive housing 2 and through another pressing tool can be replaced.
  • pressing jaw levers 10, 11 are provided between the holding plates 7, 8, two mirror-image formed and arranged pressing jaw levers 10, 11 are provided. They are pivotally mounted on mutually parallel bearing pins 12, 13, which pass through the two holding plates 7, 8.
  • the press jaw levers 10, 11 have drive housing side drive arms 14, 15, which partially extend into the space between the fork arms 4, 5, so overlap with these.
  • the drive arms 14, 15 have - as in particular from the FIGS. 2 and 3 can be seen - mutually facing drive surfaces 16, 17, which initially include only a very obtuse angle, but which shrinks in the direction of the holding plates 7, 8 to an acute angle.
  • the pressing jaw levers 10, 11 continue in the form of pressing jaw arms 18, 19, which form semicircular recesses on the mutually facing end faces, which form the contour of pressing jaws 20, 21.
  • FIGS. 2 and 3 are two actuating rollers 22, 23 can be seen, which are freely rotatable about mutually parallel axes and abut each other.
  • the actuating rollers 22, 23 are mounted at the upper end of an actuating plunger, not shown here, which is part of a housed in the drive housing 2 spindle gear, which is connected on the input side to an electric motor.
  • the electric motor is be supplied with electrical energy by a battery pack or by connection to the mains.
  • FIG. 2 the pressing tool 6 is shown in its open starting position, in which the actuating rollers 22, 23 occupy their retracted position below the lower ends of the drive arms 14, 15. In this position, the actuating rollers 22, 23 are not on the drive arms 14, 15 at.
  • the pressing device 1 is attached to a pipe joint, that it is transverse to the longitudinal axis of the pipe joint between the pressing jaws 20, 21 and the longitudinal axis 24 of the pressing device 1.
  • the pipe connection has a pipe end region 25, over which a conventional press fitting 26 is partially pushed, perpendicular to the plane of the drawing.
  • the drive arms 14, 15 of the pressing jaw lever 10, 11 color-contrasting, triangular markings 27, 28 in the form of a color coating, in the starting position according to FIG. 2 are partially covered by the fork arm 4 due to the overlap between this and the drive arms 14, 15. They face each other with their pointed ends.
  • the electric motor is turned on. This has the consequence that the actuating plunger and thus the actuating rollers 22, 23 are moved in the direction of the pressing tool 6.
  • the actuating rollers 22, 23 initially leads against the flat inclined portions of the drive surfaces 16, 17. This leads to the spreading of the drive arms 14, 15, with the result that the Pressbakkenarme 18, 19 approach each other and the pressing jaws 20, 21 come to rest on the press fitting 26.
  • With the further translational movement of the actuating stamp then begins the actual pressing process in which the press fitting 26 is plastically deformed radially inwardly, in the last stage of compression and the Rohrend Scheme 25 - also plastically - is compressed radially inward.
  • the actuating rollers 22, 23 enter the area between the drive arms 14, 15 and thereby cause a further spreading of the drive arms 14, 15th
  • FIG. 3 how out FIG. 3 can also be seen, are the marks 27, 28 when reaching the final press position completely outside the overlap between fork arm 4 and drive arms 14, 15, in such a way that their mutual aligned peaks at the overlap. For the operator, it is thus easy to determine that the final press position has been reached. If the tips of the markings 27, 28 are only slightly covered, this is clearly visible and signals the operator that the Pressbakkenarme 18, 19 have not reached their final pressing position, so there is Fehlverpessung.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The device (1) has an indicator for visually determining whether device parts e.g. clutch fork (3), have achieved an end press position. The indicator has a marking arranged on one of the device parts. The marking is partially covered by overlapping of the device parts in the end press position, so that the end press position is made visible. The marking is completely covered external to or in the overlapping of the device parts, after the device parts achieve the end press position. The device parts are moveable relative to each other between an initial position and the end press position.

Description

Die Erfindung betrifft ein handführbares Pressgerät mit einer Antriebseinheit und einem daran angebrachten Presswerkzeug, wobei das Pressgerät wenigstens zwei Geräteteile aufweist, die zwischen einer Ausgangsstellung und einer Endpressstellung relativ zueinander bewegbar sind und die sich derart überlappen, dass sich ihr Überlappungsgrad bei der Bewegung zwischen Ausgangsstellung und Endstellung ändert, wobei eine Anzeigeeinrichtung vorgesehen ist, über die das Erreichen oder das Nichterreichen der Endpressstellung visuell feststellbar ist.The invention relates to a hand-held pressing device with a drive unit and an attached pressing tool, wherein the pressing device has at least two device parts which are movable relative to each other between a starting position and a final pressing position and overlap such that their degree of overlap in the movement between the starting position and End position changes, wherein a display device is provided, via which the achievement or failure of the final press position is visually determined.

Zum Verbinden von Rohrenden ist es bekannt, hülsenförmige Pressfittings zu verwenden. Das Pressfitting wird über oder in die Rohrenden geschoben und dann die Kombination aus Pressfitting und Rohrende mittels eines an den Überlappungsbereich von Pressfitting und Rohrende gesetzten Pressgerätes radial zusammengepresst. Solche Rohrverbindungen und die zugehörigen Pressfittings sind beispielsweise aus der DE 1 187 870 C1 und der DE 299 08 561 U1 bekannt.For connecting pipe ends, it is known to use sleeve-shaped press fittings. The press fitting is slid over or into the pipe ends and then the pressfitting and pipe end combination is radially compressed by means of a press tool placed against the overlap area of the pressfitting and pipe end. Such pipe connections and the associated press fittings are for example from DE 1 187 870 C1 and the DE 299 08 561 U1 known.

Die Verpressung geschieht mit Hilfe von Pressgeräten, die aus einer Antriebseinheit und einem daran gekoppelten Presswerkzeug bestehen. Beispiele hierfür sind der DE 10 2006 003 044 A1 , EP 0 627 273 B1 , DE 196 31 019 A1 zu entnehmen. Die Pressgeräte haben eine Antriebseinheit, an deren Ende ein Presswerkzeug auswechselbar angekoppelt ist, das in vielen Fällen nach Art einer Presszange ausgebildet ist. Das Presswerkzeug hat zwei spiegelbildlich ausgeführte und angeordnete Presshebel, die an einer Halterung um zwei parallele Schwenkachsen derart verschwenkbar gelagert sind, dass die Presshebel aus einer Ausgangsposition in eine Endpressposition und umgekehrt verschwenkbar sind.The pressing is done by means of pressing devices, which consists of a drive unit and a coupled thereto Press tool consist. Examples are the DE 10 2006 003 044 A1 . EP 0 627 273 B1 . DE 196 31 019 A1 refer to. The pressing devices have a drive unit, at the end of a pressing tool is interchangeably coupled, which is formed in many cases in the manner of a pressing tongs. The pressing tool has two mirror-image running and arranged pressing lever, which are mounted on a holder about two parallel pivot axes so pivotally that the pressing lever from a starting position in a final press position and vice versa are pivotable.

In mit der Antriebseinheit gekuppelten Zustand ragen die Presshebel in den Bewegungsbereich eines Betätigungsstempels hinein, der Teil der Antriebseinheit ist und der mittels eines Antriebes linear derart zwischen die beiden Presshebel bewegbar ist, dass er die Presshebel in diesem Bereich auseinanderspreizt mit der Folge, dass sie sich an den freien Enden einander annähern. Dort sind halbkreisförmige Pressbacken ausgeformt, die für die direkte Anlage an dem zu verpressenden Werkstück bestimmt sind und in der Endpressposition in gegenseitige Anlage kommen und dabei einen im Wesentlichen geschlossenen Pressraum bilden. Statt dessen können die freien Enden der Presshebel aber auch mit weiteren Presselementen verbunden sein, beispielsweise einer mit Pressbacken versehenen Pressschlinge, wie dies in der EP 0 627 273 B1 und der Figur 1 von DE 10 2006 003 044 A1 offenbart ist, oder zum Axialverpressen von Rohrenden (vgl. DE 203 04 017 U1 ).In coupled with the drive unit state, the pressing levers protrude into the range of movement of an actuating punch, which is part of the drive unit and which is linearly movable by means of a drive between the two pressing levers so that it spreads the pressure levers in this area with the result that they themselves approach each other at the free ends. There, semicircular pressing jaws are formed, which are intended for direct contact with the workpiece to be compressed and come into mutual contact in the final pressing position and thereby form a substantially closed pressing space. Instead, the free ends of the pressing lever can also be connected to other pressing elements, such as a pressing jaws provided with press loop, as in the EP 0 627 273 B1 and the FIG. 1 from DE 10 2006 003 044 A1 is disclosed, or for Axialverpressen pipe ends (see. DE 203 04 017 U1 ).

Um mit einem einzigen Pressgerät Rohrenden unterschiedlichen Durchmessers mit zugehörigen Pressfittings verbinden zu können, werden die Pressgeräte meistens mit einem Satz von mehreren, an die jeweiligen Nenndurchmesser der Rohrenden bzw. Pressfittings angepassten Presswerkzeugen ausgeliefert. Für den jeweiligen Pressvorgang wird das passende Presswerkzeug mit der Antriebseinrichtung gekoppelt.In order to be able to connect tube ends of different diameters with associated pressfittings using a single pressing device, the pressing devices are usually delivered with a set of several pressing tools adapted to the respective nominal diameter of the tube ends or pressfittings. For the respective pressing process, the appropriate pressing tool is coupled to the drive device.

Für die Beaufschlagung des Betätigungsstempels sind im Wesentlichen zwei Antriebe bekannt, nämlich der elektromechanische und der elektrohydraulische Antrieb. Beim elektromechanischen Antrieb wird die Drehbewegung eines Elektromotors über ein Spindelgetriebe in eine Linearbewegung des Betätigungsstempels umgewandelt. Beim elektrohydraulischen Antrieb treibt der Elektromotor eine Hydraulikpumpe an, wobei das hierdurch geförderte Hydrauliköl einer Zylinder-Kolben-Einheit zugeführt wird, deren Kolbenstange den Betätigungsstempel bildet.Essentially two drives are known for the actuation of the actuating punch, namely the electromechanical and the electrohydraulic drive. When electromechanical drive the rotational movement of an electric motor is converted via a spindle gear in a linear movement of the actuating punch. In the case of the electrohydraulic drive, the electric motor drives a hydraulic pump, the hydraulic oil conveyed thereby being supplied to a cylinder-piston unit whose piston rod forms the actuating punch.

Bei der Verbindung von Rohrenden ist es außerordentlich wichtig, dass die Verpressung ein für die Dichtigkeit der Rohrverbindung ausreichendes Maß hat. Erreichen die Pressbacken nicht die Endpressposition, liegt eine Unterverpressung (Fehlverpressung) vor mit der Folge, dass es bei der Beaufschlagung der Rohrleitung mit der vorgesehenen Flüssigkeit zu Flüssigkeitsverlusten kommt, die weitreichende Schäden am Bauwerk, in dem die Rohrleitung verlegt ist, haben können.When connecting pipe ends, it is extremely important that the compression has sufficient for the tightness of the pipe joint. If the pressing jaws do not reach the final pressing position, there is undercutting (incorrect injection), with the consequence that the liquid supplied to the pipeline with the intended liquid will suffer from extensive losses Damage to the building in which the pipeline is laid, may have.

Damit die Pressbacken ihre Endpressstellung erreichen, wird der Antrieb in der Antriebseinheit in seine Endstellung verfahren. Hierdurch wird jedoch nicht zwingend die gewünschte und vorgegebene Endpressstellung der Pressbakken erreicht. Die auftretenden Kräfte führen zu elastischen Verformungen an den Presshebeln, an denen die Pressbacken sitzen. Außerdem sind die Pressbacken, Pressfittings und Rohre mit Toleranzen behaftet, die bei ungünstiger Summierung dazu führen, dass bei Erreichen der Endstellung des Antriebes keine ausreichende Verpressung gegeben ist. Um dennoch eine dichte Rohrverbindung herstellen zu können, werden die Pressbacken mit einer Presskraft beaufschlagt, die unter Hinzufügung eines ausreichend großen Sicherheitsfaktors so ausgelegt ist, dass im Normalfall eine ausreichende Verpressung und damit dichte Verbindung erzielt wird.In order for the pressing jaws to reach their final pressing position, the drive in the drive unit is moved into its end position. However, this does not necessarily achieve the desired and predetermined final press position of the press jaws. The occurring forces lead to elastic deformations on the pressing levers on which the pressing jaws sit. In addition, the press jaws, press fittings and pipes are subject to tolerances that lead to unfavorable summation that when reaching the end position of the drive is not given sufficient compression. In order to still be able to produce a tight pipe connection, the pressing jaws are subjected to a pressing force which is designed with the addition of a sufficiently large safety factor so that in the normal case sufficient compression and thus tight connection is achieved.

Gleichwohl können Probleme auftreten, die eine unvollkommene Verpressung (Fehlverpressung) zur Folge haben. So bereitet es Schwierigkeiten, die Endkraft des Antriebes konstant zu halten. Für das Erreichen der Endkraft ist in den meisten Fällen ein Auslöseorgan als Schaltorgan verantwortlich, beispielsweise bei rotierenden Antrieben eine Drehmomentkupplung, bei einem elektrohydraulischen Antrieb ein Überdruckventil und bei elektrisch betriebenen Pressgeräten ein Überstromauslöser. Da die Antriebskraft nicht direkt gemessen wird, sondern eine umgewandelte Größe (Drehmoment, Druck oder Strom), die nur noch ein Bruchteil der Größe der Endkraft darstellt, hat jede Ungenauigkeit bei der Herstellung des Auslöseorgans und jeder Verschleiß große Auswirkungen auf die Endkraft des Antriebs und damit letztendlich auf die Pressqualität. Zudem hat auch die Umgebungs- und Betriebstemperatur Einfluss auf das Pressverhalten. Dabei ist besonders heimtückisch, dass die Veränderung der Endkraft vor allem aufgrund von Verschleiß schleichend vonstatten geht und deshalb im Regelfall nicht bemerkt wird.Nevertheless, problems can occur that result in imperfect compression. So it is difficult to keep the final power of the drive constant. For the achievement of the end force in most cases, a trigger member is responsible as a switching element, for example, in rotating drives, a torque clutch in an electro-hydraulic drive, a pressure relief valve and electrically operated pressing devices, an overcurrent release. Because the driving force is not measured directly, but a converted quantity (torque, pressure or current), which represents only a fraction of the size of the end force, any inaccuracy in the production of the trigger and any wear has a major impact on the final power of the drive and thus ultimately on the press quality. In addition, the ambient and operating temperature has an influence on the pressing behavior. It is particularly treacherous that the change in the end force, especially due to wear and tear occurs cautiously and is therefore usually not noticed.

Schließlich kann es auch zu Verquetschungen des Pressfittings in der Weise kommen, dass Material oder auch fest anhaftender Schmutz in die Spalte zwischen den jeweils gegenüberliegenden Stirnseiten der Pressbacken gelangt. Dies verhindert ein Schließen dieser Spalte bis in die gewünschte Endpressstellung trotz Erreichen der Endkraft im Antrieb. Eine mangelhafte Verpressung mit der Folge, dass keine Dichtheit gewährleistet ist, ist dann die Folge.Finally, it can also lead to pinching of the press fitting in such a way that material or firmly adhering dirt gets into the gaps between the respective opposite end faces of the pressing jaws. This prevents closing of this column to the desired final pressing position despite reaching the final force in the drive. A poor compression with the result that no tightness is guaranteed, is then the result.

Um insoweit eine höhere Zuverlässigkeit zu erhalten, ist nach der DE 196 31 019 A1 vorgeschlagen worden, in dem Bereich der Pressbacken wenigstens einen Aufnehmer für die Erfassung der Endpressstellung der Pressbacken anzuordnen und dem Aufnehmer eine Anzeigeeinrichtung zuzuordnen, welche ein von außen wahrnehmbares Anzeigesignal bei Erreichen oder bei Nichterreichen der Endpressstellung erzeugt. Eine solche Anzeigeeinrichtung ist ein relativ kompliziertes Bauteil, welches unter den rauhen Bedingungen auf einer Baustelle leicht beschädigt werden kann und im Übrigen auch dem Verschleiß unterliegt. Die beweglichen Teile können sich verklemmen und so den Anzeigevorgang vereiteln.In order to obtain a higher reliability so far, is after the DE 196 31 019 A1 has been proposed to arrange in the region of the pressing jaws at least one pickup for detecting the final pressing position of the pressing jaws and the pickup to assign a display device which an externally perceptible display signal when reaching or not reaching the final press position generated. Such a display device is a relatively complicated component, which can be easily damaged under the harsh conditions on a construction site and incidentally also subject to wear. The moving parts can jam and thwart the display process.

Der Erfindung liegt die Aufgabe zugrunde, ein Pressgerät der eingangs genannten Art so auszubilden, dass die Anzeigeeinrichtung möglichst einfach, kostengünstig und beschädigungssicher ausgebildet ist.The invention has the object of providing a pressing device of the type mentioned in such a way that the display device is as simple, inexpensive and damage-resistant.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Anzeigeeinrichtung allein aus zumindest einer Markierung besteht, die derart auf einem der Geräteteile angeordnet ist, dass die Markierung bzw. zumindest eine der Markierungen

  1. a) in der Endpressstellung teilweise durch die Überlappung abgedeckt ist und die zumindest eine Markierung dann die Endpressstellung erkennbar macht
    oder
  2. b) mit Erreichen der Endpressstellung
    aa) vollständig außerhalb der Überlappung
    oder
    bb) vollständig von der Überlappung abgedeckt ist.
This object is achieved in that the display device consists solely of at least one mark, which is arranged on one of the device parts such that the marking or at least one of the markings
  1. a) is partially covered in the final pressing position by the overlap and the at least one mark then makes the final pressing position recognizable
    or
  2. b) upon reaching the final press position
    aa) completely outside the overlap
    or
    bb) is completely covered by the overlap.

Grundgedanke der Erfindung ist es also, an einem von beim Pressvorgang sich relativ zueinander bewegenden Geräteteilen eine Markierung - es können auch mehrere solcher Markierungen vorgesehen und sie können auch an unterschiedlichen Geräteteilen angeordnet sein - anzubringen, und zwar in einer solchen Anordnung und flächenmäßigen Erstreckung, dass anhand der Stellung und/oder des Grades der Abdeckung der Markierung visuell feststellbar ist, ob die Endpressstellung erreicht ist oder nicht. Eine solche Markierung ist auf einfache Weise an dem Geräteteil anbringbar, beispielsweise in Form einer Farbschicht, eines aufgeklebten oder aufgenieteten Plättchens, einer Folie, einer Einprägung, Einfräsung oder Bohrung, und hat keine beweglichen Teile. Die Markierung ist also kostengünstig herstellbar und relativ beschädigungssicher, insbesondere wenn sie versenkt angeordnet ist. Sofern mehrere Markierungen vorgesehen sind, ist es nicht zwingend, dass sie sämtlich nur zu einer der im Anspruch 1 angegebenen Alternativen gehört. Vielmehr können sie auch unterschiedlichen Alternativen angehören, so dass in der Endpressstellung beispielsweise eine Markierung vollständig außerhalb und eine andere vollständig innerhalb der Überlappung liegen.The basic idea of the invention is therefore to attach a marking to one of the parts of the device moving relative to one another during the pressing process - several such markings can also be provided and they can also be arranged on different parts of the device - in such an arrangement and areal extent that is visually determined by the position and / or the degree of coverage of the mark, whether the final pressing position is reached or not. Such a marking is easily attachable to the device part, for example in the form of a color layer, a glued or riveted plate, a foil, an embossing, milled or drilled, and has no moving parts. The marking is therefore inexpensive to produce and relatively damage-resistant, especially if it is arranged sunk. If several markings are provided, it is not mandatory that they all belong only to one of the alternatives specified in claim 1. Rather, they may also belong to different alternatives, so that in the final press position, for example, one marking is completely outside and another completely within the overlap.

Soweit die Markierung in der Endpressstellung nur teilweise durch die Überlappung abgedeckt ist, sollte sie in der Ausgangsstellung vollständig außerhalb der Überlappung liegen oder vollständig von der Überlappung abgedeckt sein. Sofern die Markierung bzw. eine der Markierungen mit Erreichen der Endpressstellung vollständig außerhalb der Überlappung liegt, ist eine Erkennbarkeit der Endpressstellung auch dann gegeben, wenn die Markierung zur Überlappung beabstandet ist, insbesondere wenn der Abstand gleich der Erstreckung der Markierung in Abstandsrichtung ist. Eine bessere Erkennbarkeit ist jedoch gegeben, wenn die Markierung in der Endpressstellung an die Überlappung angrenzend liegt. Dabei kann die Markierung auch schon in der Ausgangsstellung vollständig außerhalb der Überlappung liegen, was günstig ist für die Erkennbarkeit der Endpressstellung, oder vollständig von der Überlappung abgedeckt sein. Sofern die Markierung erst in der Endpressstellung vollständig von der Überlappung abgedeckt ist, sollte sie in der Ausgangsstellung vollständig außerhalb der Überlappung liegen. Zwingend ist dies jedoch nicht.As far as the mark in the final press position is only partially covered by the overlap, it should be in be completely outside the overlap or completely covered by the overlap. If the marking or one of the markings is completely outside the overlap when the final press position is reached, the end press position can be recognized even if the mark is spaced from the overlap, in particular if the distance is equal to the extent of the mark in the spacing direction. A better recognizability is given, however, if the mark is in the final pressing position adjacent to the overlap. In this case, even in the starting position, the marking can lie completely outside the overlap, which is favorable for the recognizability of the final pressing position, or be completely covered by the overlap. If the marking is completely covered by the overlap only in the final press position, it should be completely outside the overlap in the starting position. However, this is not mandatory.

In weiterer Ausgestaltung der Erfindung ist vorgeschlagen, dass die Markierung ihre Erstreckung quer zur Bewegungsrichtung bei der Relativbewegung der Geräteteile an der Grenze zur Überlappung ändert, damit der Fortgang der Verpressung durch die Änderung der Erstreckung der Markierung quer zur Bewegungsrichtung erkennbar wird. Beispielsweise kann die Markierung als Dreieck, Kreis oder Trapez ausgebildet sein. Sofern die Markierung als Dreieck ausgebildet ist, sollte eine Ecke in der Endpressstellung an die Überlappung angrenzen. Dabei sollte die Ecke einen spitzen Winkel einschließen.In a further embodiment of the invention, it is proposed that the marking changes its extension transversely to the direction of movement in the relative movement of the device parts at the border to the overlap, so that the progress of the compression is recognizable by the change in the extent of the marking transversely to the direction of movement. For example, the mark may be formed as a triangle, circle or trapezoid. If the mark is formed as a triangle, should be a corner in the final press position adjacent to the overlap. The corner should include an acute angle.

Die Markierung ist vorzugsweise am Presswerkzeug selbst angebracht, damit die Anzeige durch die Markierung möglichst nah an den Pressbacken erfolgt und somit dazwischen liegende Einflüsse minimiert werden. Konkret kann eines der sich überlappenden Geräteteile Teil des Werkzeuges und das andere Geräteteil Teil der Antriebseinheit sein.The marking is preferably attached to the pressing tool itself, so that the indication by the marking as close as possible to the pressing jaws and thus intermediate influences are minimized. Concretely, one of the overlapping device parts may be part of the tool and the other device part part of the drive unit.

Sofern das Presswerkzeug in an sich bekannter Weise zwei spiegelbildlich ausgebildete und angeordnete Antriebshebel aufweist, die an einer Halterung um zwei parallele Achsen schwenkbar gelagert sind, wobei die Halterung mit der Antriebseinheit über eine Kupplungseinheit verbunden ist, die die Antriebshebel teilweise überlappt, sollte wenigstens einer der Presshebel die Markierung im Bereich der Kupplungseinheit aufweisen.If the pressing tool in a conventional manner has two mirror-image formed and arranged drive lever which are pivotally mounted on a holder about two parallel axes, wherein the holder is connected to the drive unit via a coupling unit which partially overlaps the drive lever, should at least one of Press lever have the mark in the coupling unit.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispiels näher veranschaulicht. Es zeigen:

Figur 1
eine Schrägansicht des erfindungsgemäßen Pressgeräts;
Figur 2
eine Seitenansicht des einen Endes des Pressgerätes gemäß Figur 1 mit dem Presswerkzeug in Ausgangsstellung und
Figur 3
die Seitenansicht gemäß Figur 2 mit dem Presswerkzeug in der Endpressstellung.
In the drawing, the invention with reference to an embodiment is illustrated in more detail. Show it:
FIG. 1
an oblique view of the pressing device according to the invention;
FIG. 2
a side view of the one end of the pressing device according to FIG. 1 with the pressing tool in the starting position and
FIG. 3
the side view according to FIG. 2 with the pressing tool in the final pressing position.

Das in Figur 1 dargestellte Pressgerät wird typischerweise für das Verpressen von Pressfittings mit Rohrenden zwecks Verbindung zweier Rohrenden verwendet. Es hat ein Antriebsgehäuse 2, in dem eine Antriebseinrichtung gekapselt und eingebaut ist. Das Antriebsgehäuse 2 läuft rechts in eine Kupplungsgabel 3 aus, die zwei beabstandete, im Querschnitt halbkreisförmige Gabelarme 4, 5 aufweist.This in FIG. 1 The press apparatus shown is typically used for the compression of press fittings with pipe ends to connect two pipe ends. It has a drive housing 2, in which a drive device is encapsulated and installed. The drive housing 2 runs right into a coupling fork 3, which has two spaced, in cross-section semicircular fork arms 4, 5.

Die Gabelarme 4, 5 umfassen beidseitig ein Presswerkzeug 6. Es hat eine Halterung mit zwei T-förmigen Halteplatten 7, 8, die - in der Frontansicht gemäß Figur 2 gesehen - genau hintereinander und deckungsgleich angeordnet sind.The fork arms 4, 5 comprise on both sides a pressing tool 6. It has a holder with two T-shaped holding plates 7, 8, which - in the front view according to FIG. 2 seen - are arranged exactly behind each other and congruent.

Die Halteplatten 7, 8 ragen teilweise in den Raum zwischen den beiden Gabelarmen 4, 5 hinein und sind dort mittels eines Verbindungsbolzens 9 an den Gabelarmen 4, 5 gehalten. Der Verbindungsbolzen 9 durchsetzt beide Gabelarme 4, 5 und die Halteplatten 7, 8 und verbindet auf diese Weise das Presswerkzeug 6 mit dem Antriebsgehäuse 2. Der Verbindungsbolzen 9 kann von Hand herausgenommen werden, so dass das gezeigte Presswerkzeug 6 von dem Antriebsgehäuse 2 abgenommen und durch ein anderes Presswerkzeug ersetzt werden kann.The holding plates 7, 8 protrude partially into the space between the two fork arms 4, 5 and are held there by means of a connecting pin 9 on the fork arms 4, 5. The connecting pin 9 passes through both fork arms 4, 5 and the holding plates 7, 8 and connects in this way the pressing tool 6 with the drive housing 2. The connecting pin 9 can be removed by hand, so that the pressing tool 6 shown removed from the drive housing 2 and through another pressing tool can be replaced.

Zwischen den Halteplatten 7, 8 sind zwei spiegelbildlich ausgebildete und angeordnete Pressbackenhebel 10, 11 vorgesehen. Sie sitzen schwenkbar auf parallel zueinander angeordneten Lagerbolzen 12, 13, die jeweils die beiden Halteplatten 7, 8 durchsetzen. Die Pressbackenhebel 10, 11 haben antriebsgehäuseseitig Antriebsarme 14, 15, die sich teilweise in den Zwischenraum zwischen den Gabelarmen 4, 5 erstrecken, mit diesen also überlappen. Die Antriebsarme 14, 15 weisen - wie sich insbesondere aus den Figuren 2 und 3 ersehen lässt - einander zugewandte Antriebsflächen 16, 17 auf, welche zunächst nur einen sehr stumpfen Winkel einschließen, der jedoch in Richtung auf die Halteplatten 7, 8 zu einem spitzen Winkel schrumpft. Zu den freien Enden setzen sich die Pressbackenhebel 10, 11 in Form von Pressbackenarmen 18, 19 fort, die an den einander gegenüberstehenden Stirnseiten halbkreisförmige Ausnehmungen ausbilden, die die Kontur von Pressbacken 20, 21 bilden.Between the holding plates 7, 8, two mirror-image formed and arranged pressing jaw levers 10, 11 are provided. They are pivotally mounted on mutually parallel bearing pins 12, 13, which pass through the two holding plates 7, 8. The press jaw levers 10, 11 have drive housing side drive arms 14, 15, which partially extend into the space between the fork arms 4, 5, so overlap with these. The drive arms 14, 15 have - as in particular from the FIGS. 2 and 3 can be seen - mutually facing drive surfaces 16, 17, which initially include only a very obtuse angle, but which shrinks in the direction of the holding plates 7, 8 to an acute angle. At the free ends, the pressing jaw levers 10, 11 continue in the form of pressing jaw arms 18, 19, which form semicircular recesses on the mutually facing end faces, which form the contour of pressing jaws 20, 21.

In den Figuren 2 und 3 sind zwei Betätigungsrollen 22, 23 zu sehen, die um zueinander parallele Achsen frei drehbar gelagert sind und aneinander anliegen. Die Betätigungsrollen 22, 23 sind am oberen Ende eines hier nicht dargestellten Betätigungsstempels gelagert, der Teil eines im Antriebsgehäuse 2 untergebrachten Spindelgetriebes ist, das eingangsseitig mit einem Elektromotor verbunden ist. Dessen Drehbewegung wird in dem Spindelgetriebe in eine Translationsbewegung des Betätigungsstempels in Richtung dessen Längsachse 24 umgesetzt. Der Elektromotor ist durch einen Akkumulatorpaket oder durch Anschluss an das Stromnetz mit elektrischer Energie versorgbar.In the FIGS. 2 and 3 are two actuating rollers 22, 23 can be seen, which are freely rotatable about mutually parallel axes and abut each other. The actuating rollers 22, 23 are mounted at the upper end of an actuating plunger, not shown here, which is part of a housed in the drive housing 2 spindle gear, which is connected on the input side to an electric motor. Whose rotational movement is implemented in the spindle gear in a translational movement of the actuating plunger in the direction of its longitudinal axis 24. The electric motor is be supplied with electrical energy by a battery pack or by connection to the mains.

In Figur 2 ist das Presswerkzeug 6 in seiner offenen Ausgangsstellung dargestellt, bei der die Betätigungsrollen 22, 23 ihre zurückgezogene Position unterhalb der unteren Enden der Antriebsarme 14, 15 einnehmen. In dieser Position liegen die Betätigungsrollen 22, 23 nicht an den Antriebsarmen 14, 15 an. Das Pressgerät 1 ist so an eine Rohrverbindung angesetzt, dass diese zwischen den Pressbacken 20, 21 und die Längsachse 24 des Pressgerätes 1 quer zur Längsachse der Rohrverbindung steht. Die Rohrverbindung weist einen Rohrendbereich 25 auf, über den ein üblicher Pressfitting 26 teilweise geschoben ist, und zwar senkrecht zur Zeichnungsebene.In FIG. 2 the pressing tool 6 is shown in its open starting position, in which the actuating rollers 22, 23 occupy their retracted position below the lower ends of the drive arms 14, 15. In this position, the actuating rollers 22, 23 are not on the drive arms 14, 15 at. The pressing device 1 is attached to a pipe joint, that it is transverse to the longitudinal axis of the pipe joint between the pressing jaws 20, 21 and the longitudinal axis 24 of the pressing device 1. The pipe connection has a pipe end region 25, over which a conventional press fitting 26 is partially pushed, perpendicular to the plane of the drawing.

Im unteren Bereich weisen die Antriebsarme 14, 15 der Pressbackenhebel 10, 11 farblich abgesetzte, dreiecksförmige Markierungen 27, 28 in Form einer Farbbeschichtung auf, die in der Ausgangsstellung gemäß Figur 2 durch den Gabelarm 4 aufgrund der Überlappung zwischen diesem und den Antriebsarmen 14, 15 teilweise abgedeckt sind. Sie sind mit ihren spitz auslaufenden Ende aufeinander zu gerichtet.In the lower region, the drive arms 14, 15 of the pressing jaw lever 10, 11 color-contrasting, triangular markings 27, 28 in the form of a color coating, in the starting position according to FIG. 2 are partially covered by the fork arm 4 due to the overlap between this and the drive arms 14, 15. They face each other with their pointed ends.

Für den Pressvorgang wird der Elektromotor eingeschaltet.
Dies hat zur Folge, dass der Betätigungsstempel und damit die Betätigungsrollen 22, 23 in Richtung auf das Presswerkzeug 6 bewegt werden. Die Betätigungsrollen 22, 23 fahren zunächst gegen die flach geneigten Abschnitte der Antriebsflächen 16, 17. Dies führt zum Spreizen der Antriebsarme 14, 15 mit der Folge, dass sich die Pressbakkenarme 18, 19 einander annähern und die Pressbacken 20, 21 zur Anlage an dem Pressfitting 26 kommen. Mit der weiteren Translationsbewegung des Betätigungsstempels beginnt dann der eigentliche Pressvorgang, bei dem das Pressfitting 26 radial nach innen plastisch verformt wird, wobei im letzten Pressstadium auch der Rohrendbereich 25 - ebenfalls plastisch - radial nach innen komprimiert wird. Dabei fahren die Betätigungsrollen 22, 23 in den Bereich zwischen den Antriebsarmen 14, 15 ein und verursachen hierdurch eine weitere Spreizung der Antriebsarme 14, 15.For the pressing process, the electric motor is turned on.
This has the consequence that the actuating plunger and thus the actuating rollers 22, 23 are moved in the direction of the pressing tool 6. The actuating rollers 22, 23 initially leads against the flat inclined portions of the drive surfaces 16, 17. This leads to the spreading of the drive arms 14, 15, with the result that the Pressbakkenarme 18, 19 approach each other and the pressing jaws 20, 21 come to rest on the press fitting 26. With the further translational movement of the actuating stamp then begins the actual pressing process in which the press fitting 26 is plastically deformed radially inwardly, in the last stage of compression and the Rohrendbereich 25 - also plastically - is compressed radially inward. The actuating rollers 22, 23 enter the area between the drive arms 14, 15 and thereby cause a further spreading of the drive arms 14, 15th

Bei einer ordnungsgemäßen Verpressung wird die Bewegung des Betätigungsstempels und damit der Pressvorgang solange fortgesetzt, bis die einander zugewandten Stirnflächen oberhalb und unterhalb der Pressbacken 20, 21 aneinander stoßen. Diese Stellung ist in Figur 3 zu sehen. Die Pressbackenhebel 10, 11 haben dann ihre Endpressposition erreicht. Der sich hierdurch erhöhende Widerstand führt durch ein Kraftbegrenzungselement zu einer Unterbrechung der Kraftbeaufschlagung des Betätigungsstempels.In a proper compression, the movement of the actuating punch and thus the pressing process is continued until the facing end faces above and below the pressing jaws 20, 21 abut each other. This position is in FIG. 3 to see. The pressing jaw levers 10, 11 have then reached their final pressing position. The thus increasing resistance leads by a force limiting element to an interruption of the application of force to the actuating ram.

Wie aus Figur 3 ebenfalls zu erkennen ist, liegen die Markierungen 27, 28 bei Erreichen der Endpressstellung vollständig außerhalb der Überlappung zwischen Gabelarm 4 und Antriebsarmen 14, 15, und zwar derart, dass ihre gegeneinander gerichteten Spitzen an der Überlappung angrenzen. Für die Bedienungsperson ist es auf diese Weise einfach festzustellen, dass die Endpressposition erreicht worden ist. Sollten die Spitzen der Markierungen 27, 28 nur ein wenig abgedeckt sein, ist dies deutlich erkennbar und signalisiert der Bedienungsperson, dass die Pressbakkenarme 18, 19 nicht ihre Endpressstellung erreicht haben, also eine Fehlverpessung vorliegt.How out FIG. 3 can also be seen, are the marks 27, 28 when reaching the final press position completely outside the overlap between fork arm 4 and drive arms 14, 15, in such a way that their mutual aligned peaks at the overlap. For the operator, it is thus easy to determine that the final press position has been reached. If the tips of the markings 27, 28 are only slightly covered, this is clearly visible and signals the operator that the Pressbakkenarme 18, 19 have not reached their final pressing position, so there is Fehlverpessung.

Claims (14)

Handführbares Pressgerät (1) mit einer Antriebseinheit (2) und einem daran angebrachten Presswerkzeug (6), wobei das Pressgerät (1) wenigstens zwei Geräteteile (3, 14, 15) aufweist, die zwischen einer Ausgangsstellung und einer Endpressstellung relativ zueinander bewegbar sind und die sich derart überlappen, dass sich ihr Überlappungsgrad bei der Bewegung zwischen Ausgangsstellung und Endpressstellung ändert, wobei eine Anzeigeeinrichtung vorgesehen ist, über die das Erreichen oder das Nichterreichen der Endpressstellung visuell feststellbar ist,
dadurch gekennzeichnet, dass die Anzeigeeinrichtung allein aus zumindest einer Markierung (27, 28) besteht, die derart auf einem der Geräteteile (3, 14, 15) angeordnet ist, dass die Markierung bzw. zumindest eine der Markierungen (27, 28) a) in der Endpressstellung teilweise durch die Überlappung abgedeckt ist und die zumindest eine Markierung dann die Endpressstellung erkennbar macht
oder b) mit Erreichen der Endpressstellung
aa) vollständig außerhalb der Überlappung
oder
bb) vollständig von der Überlappung abgedeckt ist. Hand-guided pressing device (1) with a drive unit (2) and a pressing tool (6) attached thereto, wherein the pressing device (1) has at least two device parts (3, 14, 15) which are movable relative to each other between a starting position and a final pressing position and which overlap in such a way that their degree of overlap changes during the movement between the starting position and the final pressing position, a display device being provided by means of which the achievement or non-achievement of the final pressing position can be visually ascertained,
characterized in that the display device consists solely of at least one marking (27, 28) which is arranged on one of the device parts (3, 14, 15) such that the marking or at least one of the markings (27, 28) a) is partially covered in the final pressing position by the overlap and the at least one mark then makes the final pressing position recognizable
or b) upon reaching the final press position
aa) completely outside the overlap
or
bb) is completely covered by the overlap. Pressgerät nach Anspruch 1, dadurch gekennzeichnet, dass die zumindest eine Markierung (27, 28) aus einer Farbschicht, einer Folie, einem Plättchen, einer Einprägung, einer Fräsung und/oder einer Bohrung besteht.Pressing device according to claim 1, characterized in that the at least one marking (27, 28) consists of a color layer, a foil, a small plate, an impression, a milling and / or a bore. Pressgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zumindest eine Markierung versenkt angeordnet ist.Pressing device according to claim 1 or 2, characterized in that the at least one mark is recessed. Pressgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Markierung in der Endpressstellung teilweise durch die Überlappung abgedeckt ist und in der Ausgangsstellung vollständig außerhalb der Überlappung liegt oder vollständig von der Überlappung abgedeckt ist.Pressing device according to one of claims 1 to 3, characterized in that the marking is partially covered in the final pressing position by the overlap and in the starting position completely outside the overlap or is completely covered by the overlap. Pressgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Markierung bzw. zumindest eine der Markierungen mit Erreichen der Endpressstellung vollständig außerhalb der Überlappung, jedoch an diese angrenzend liegt.Pressing device according to one of claims 1 to 4, characterized in that the marking or at least one of the markings when reaching the final pressing position completely outside the overlap, but adjacent to this. Pressgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Markierung (27, 28) in der Endpressstellung vollständig außerhalb der Überlappung, jedoch an diese angrenzend liegt und dass sie auch in der Ausgangsstellung vollständig außerhalb der Überlappung liegt oder von dieser vollständig abgedeckt ist.Pressing device according to one of claims 1 to 4, characterized in that the marking (27, 28) in the final pressing position completely outside the overlap, however adjacent to this and that it is completely outside the overlap in the initial position or is completely covered by this. Pressgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Markierung erst in der Endpressstellung vollständig von der Überlappung abgedeckt ist und in der Ausgangsstellung vollständig außerhalb der Überlappung liegt.Pressing device according to one of claims 1 to 4, characterized in that the marking is completely covered only in the final pressing position of the overlap and is completely outside the overlap in the starting position. Pressgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Markierung (27, 28) ihre Erstreckung quer zur Bewegungsrichtung bei der Relativbewegung der Geräteteile (3, 14, 15) an der Grenze zur Überlappung ändert.Pressing device according to one of claims 1 to 7, characterized in that the marking (27, 28) changes its extension transversely to the direction of movement during the relative movement of the device parts (3, 14, 15) at the boundary to the overlap. Pressgerät nach Anspruch 8, dadurch gekennzeichnet, dass die Markierung (27, 28) als Dreieck, Kreis oder Trapez ausgebildet ist.Pressing device according to claim 8, characterized in that the marking (27, 28) is formed as a triangle, circle or trapezoid. Pressgerät nach Anspruch 9, dadurch gekennzeichnet, dass die Markierung (27, 28) als Dreieck ausgebildet ist und eine Ecke in der Endpressstellung an die Überlappung angrenzt.Pressing device according to claim 9, characterized in that the marking (27, 28) is formed as a triangle and a corner in the final pressing position adjacent to the overlap. Pressgerät nach Anspruch 10, dadurch gekennzeichnet, dass die Ecke einen spitzen Winkel einschließt.Pressing device according to claim 10, characterized in that the corner encloses an acute angle. Pressgerät nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Markierung (27, 28) am Presswerkzeug (6) angebracht ist.Pressing device according to one of claims 1 to 11, characterized in that the marking (27, 28) on the pressing tool (6) is mounted. Pressgerät nach Anspruch 12, dadurch gekennzeichnet, dass eines der sich überlappenden Geräteteile (14, 15) Teil des Presswerkzeuges (6) und das andere Geräteteil (3) Teil der Antriebseinheit (2) ist.Pressing device according to claim 12, characterized in that one of the overlapping device parts (14, 15) is part of the pressing tool (6) and the other device part (3) is part of the drive unit (2). Pressgerät nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass das Presswerkzeug (6) zwei spiegelbildlich ausgebildete und angeordnete Antriebshebel (14, 15) aufweist, die an einer Halterung (7, 8) um zwei parallele Achsen verschwenkbar gelagert sind, wobei die Halterung (7, 8) mit der Antriebseinheit (2) über eine Kupplungseinheit (3) verbunden ist, die die Antriebshebel (14, 15) teilweise überlappt, und wobei wenigstens einer der Antriebshebel (14, 15) die Markierung (27, 28) im Bereich der Kupplungseinheit (3) aufweist.Press device according to claim 12 or 13, characterized in that the pressing tool (6) has two mirror-image formed and arranged drive lever (14, 15) which are pivotally mounted on a holder (7, 8) about two parallel axes, wherein the holder ( 7, 8) is connected to the drive unit (2) via a coupling unit (3) which partially overlaps the drive levers (14, 15), and wherein at least one of the drive levers (14, 15) marks the marking (27, 28) in the region the coupling unit (3).
EP09006651A 2008-05-20 2009-05-18 Handheld press device Not-in-force EP2123404B1 (en)

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DE102007035206A1 (en) * 2007-07-25 2009-01-29 Joiner's Bench Ag Pressing device for connecting workpieces and arrangement and method for carrying out a technical diagnosis of the pressing device
EP2286936B1 (en) * 2009-08-11 2014-04-16 Geberit International AG Pressing tool

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DE20304017U1 (en) 2003-03-12 2003-05-22 Novopress Gmbh Press tool for joining together pipes or tubes, has compaction unit only protruding beyond drive mechanism on one side
DE102006003044A1 (en) 2006-01-23 2007-07-26 Gustav Klauke Gmbh Hydraulically driven grouting device and method for pressing a fitting

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* Cited by examiner, † Cited by third party
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DE1187870B (en) 1958-10-01 1965-02-25 Aga Plaatfoeraedling Aktiebola Plastically deformable metal coupling sleeve for connecting metal pipes with smooth ends
EP0627273B1 (en) 1990-04-12 1999-01-13 Helmut Dipl.-Ing. Dischler Press tool
US5490406A (en) * 1994-08-19 1996-02-13 The Whitaker Corporation Crimping tool having die bottoming monitor
DE19631019A1 (en) 1996-02-09 1997-08-14 Novopress Gmbh Pressure unit esp. for connecting tube with fitting using at least two open dies
DE29703052U1 (en) * 1997-02-21 1997-04-03 Novopress Gmbh Press device for connecting workpieces
DE29908561U1 (en) 1998-07-08 1999-08-12 Mannesmann Ag Combination of fitting, pipe and pressing device for the permanent connection of a pipe with a fitting
DE19946380A1 (en) * 1998-10-02 2000-04-06 Von Arx Ag Sissach Press instrument for joining workpieces, especially press fitting with reed, having electric energy storage housed in tool for supply of embedded electric and/or electronic component
DE20304017U1 (en) 2003-03-12 2003-05-22 Novopress Gmbh Press tool for joining together pipes or tubes, has compaction unit only protruding beyond drive mechanism on one side
DE102006003044A1 (en) 2006-01-23 2007-07-26 Gustav Klauke Gmbh Hydraulically driven grouting device and method for pressing a fitting

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ATE522325T1 (en) 2011-09-15
DE202008006831U1 (en) 2009-06-25
EP2123404B1 (en) 2011-08-31

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