EP2774725B1 - Compression device - Google Patents

Compression device Download PDF

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Publication number
EP2774725B1
EP2774725B1 EP14000641.2A EP14000641A EP2774725B1 EP 2774725 B1 EP2774725 B1 EP 2774725B1 EP 14000641 A EP14000641 A EP 14000641A EP 2774725 B1 EP2774725 B1 EP 2774725B1
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EP
European Patent Office
Prior art keywords
pressing
jaws
pressing jaws
receptacle
center plane
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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.)
Not-in-force
Application number
EP14000641.2A
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German (de)
French (fr)
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EP2774725A1 (en
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Rems GmbH and Co KG
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Rems GmbH and Co KG
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Publication date
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Publication of EP2774725A1 publication Critical patent/EP2774725A1/en
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Publication of EP2774725B1 publication Critical patent/EP2774725B1/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

Definitions

  • the invention relates to a pressing device according to the preamble of claim 1.
  • Pressing devices in the form of pressing tongs are mainly used in the sanitary installation to connect pipes or pipe sections via fittings, so-called fittings.
  • the connectors are slid over the ends of two tubes and radially plastically deformed to achieve a tight and tight connection between the two tubes via the connector.
  • the pressing tongs have two press jaws for this purpose, each with an integrated system-specific press contour. Often such compression must be made in places that are difficult to achieve with the crimping pliers.
  • the invention has the object of providing the generic pressing device in such a way that it can be performed with compressions in areas that are difficult to achieve.
  • the angle at which the axis of the receptacle is inclined to the transverse center plane of the pressing jaws in a range between about 30 ° and about 60 °.
  • a preferred angle is about 45 °. Such a pressing device can be used for most applications.
  • the pressing jaws have recesses in the end sections, which form the receptacle in the closed position of the pressing jaws.
  • the end portions are inclined to the remaining part of the pressing jaws. In this case, it is expedient if the axis of the depressions runs perpendicular to the transverse center plane of these oblique end portions.
  • the oblique end portions allow the problem-free approach of the pressing device to the parts to be pressed, if they are unfavorable example in room corners.
  • the end portions project beyond the one broad side of the pressing jaws. This facilitates the handling of the pressing device in critical installation conditions.
  • the recesses advantageously have mutually parallel edges, each extending in a direction perpendicular to the axis of the receptacle Lie flat.
  • the depression having parts of the pressing jaws are characterized strong enough that they can absorb the forces occurring during the plastic deformation of the connecting pieces.
  • the one edge of the recesses is advantageously formed reinforced over part of its length. This contributes to the high load capacity of the corresponding pressing jaw area during the pressing process.
  • This reinforcement is advantageously achieved in that the end portion has a projecting over its top projection, which reinforces the edge of the recesses. It is basically possible to reinforce the entire edge of the depression. However, it is also sufficient to provide the edge reinforcement only where high loads act on the recess edge.
  • a secure compression of the parts in the receptacle is advantageously ensured by the fact that the end faces of the projections are in the closed position of the pressing jaws together. These end faces are formed flat in an advantageous manner.
  • the end faces of the projections preferably lie in the mutually facing end faces of the pressing jaws.
  • the end portions are formed integrally with the pressing jaws.
  • the pressing tongs can be manufactured inexpensively.
  • the two jaws of the press ring are each provided with a recess which form the receptacle in the closed position of the jaws.
  • the jaws of the press ring can thus be pivoted apart for insertion of the workpiece to be pressed by means of the pressing jaws of the pressing device. Subsequently, the pressing jaws of the pressing device are pivoted, for example by means of a motor drive against each other so that the jaws of the pressing ring are closed. The lying in the wells workpiece is thereby pressed radially.
  • the transverse center plane of the pressing ring is preferably at an angle deviating from 90 ° to the transverse center plane of the pressing jaws.
  • the pressing device With the pressing device connecting pieces are plastically deformed, which are stuck on pipes to be joined together.
  • the pressing device is mainly used in sanitary and heating technology.
  • the joints to be deformed may be made of metal and / or plastic. Due to the plastic deformation, the pipes to be connected together and the connecting piece with each other safely connected. This Radialpresstechnik is known and is therefore not explained in detail.
  • the pressing device is a pressing tongs with two mutually pivotable pressing jaws 1 and 2, in the in Fig. 1 shown closed position with flat end faces 3, 4 abut each other.
  • the end faces 3, 4 are each provided with a recess 5, 6, which form a receptacle 7 for the part to be pressed (not shown) in the closed position of the pressing jaws 1, 2.
  • the receptacle 7 has in the illustrated embodiment polygonal outline, but may also have any other suitable outline shape, for example, be circular.
  • the shape of the receptacle 7 is determined by the so-called pressing contour, which determines how the connecting pieces are pressed radially on the tubes.
  • the two pressing jaws 1, 2 are arranged mirror-symmetrically to each other and have substantially the same thickness. At their opposite outer sides 8, 9 is in each case a connecting tab 10, 11 at. With the two connecting straps 10, 11, the two pressing jaws 1, 2 are hinged together.
  • the connecting straps 10, 11 are of the same design and extend perpendicular to the longitudinal center plane of the pressing tongs. Near their two ends, the connecting straps 10, 11 are each provided with a passage opening for bolts 12, 13. They also pass through the pressing jaws 1, 2 lying between them.
  • the connecting straps 10, 11 and the pressing jaws 1, 2 are secured axially in a known manner on the pins 12, 13.
  • the axes 14, 15 of the bolts 12, 13 form the pivot axes for the pressing jaws 1, 2.
  • the end faces 3, 4 of the pressing jaws 1, 2 each have an obtuse angle in inclined surfaces 16, 17 (FIG. FIGS. 2 and 3 ), with which the pressing jaws 1, 2 lie flat against each other in the open position.
  • the transition of the end faces 3, 4 in the inclined surfaces 16, 17 is approximately equal to the connecting straps 10, 11th
  • the two pressing jaws 1, 2 are each designed as a two-armed lever.
  • the pressing jaw 1 thus has the arms 18, 19 and the pressing jaw 2 the arms 20, 21.
  • the arms 18 to 21 each taper in the direction of their free end.
  • the arms 18, 20 are provided with the recesses 5, 6.
  • the other arms 19, 21 have mutually facing inclined surfaces 22, 23, in the in Fig. 1 shown closed position of the pressing tongs in the direction of their free end diverging to each other.
  • the inclined surfaces 22, 23 are flat and lie at an obtuse angle to the inclined surfaces 16, 17. At the transition between the inclined surfaces 16, 22 and 17, 23 is in each case a part-circular recess 24, 25.
  • the curved bottom 26, 27 of the recesses 24, 25th connects the inclined surfaces 22, 23 with the inclined surfaces 16, 17th
  • the two arms 19, 21 of the pressing jaws 1, 2 are loaded by at least one (not shown) compression spring which engages in each case a blind hole 28 in the mutually facing inclined surfaces 16, 17 of the two pressing jaws 1, 2.
  • a blind hole 28 of the pressing jaw 1 is visible.
  • a corresponding blind hole is also provided in the pressing jaw 2.
  • the compression spring ensures that the pressing jaws 1, 2, if they are not connected to a drive device, in the in Fig. 1 shown closed position to be pivoted.
  • a rectangular tab 29 which projects in the direction of the free end of the pressing jaw arms 19, 21 of the connecting straps 10, 11 and which is slightly thinner in the illustrated embodiment as the connecting tab 10, 11.
  • the connecting straps 10, 11 and the tabs 29 can also be the same thickness. It is also possible to form the tabs 29 thicker than the connecting straps 10, 11, which are advantageously integrally formed with the tabs 29.
  • the tabs 29 each have a through opening 30 in the middle, which form a receptacle for the connection of the pressing tongs to a (not shown) motor drive device.
  • a (not shown) motor drive device Such drive devices for actuating the pressing tongs are known and are therefore explained only briefly.
  • Such a drive device has two connecting arms, which are connected by a locking pin with the tabs 29.
  • the locking pin is inserted through the through holes 30 of the tabs 29 and through corresponding openings in the connecting arms and axially secured in a suitable manner.
  • the pressing tongs is rigidly connected to the drive device. It has a plunger with pressure rollers, which roll on the inclined surfaces 22, 23 upon actuation of the pressing tongs.
  • the plunger of the drive motor is extended from a starting position in the direction of the pressing pliers, wherein the pressure rollers on the inclined surfaces 22, 23 of the pressing jaws 1, 2 arrive.
  • the receptacle 7 has an axis 31 (FIG. Fig. 2 ), which lies at an acute angle ⁇ to a transverse center plane 32 of the pressing jaws 1, 2.
  • the angle ⁇ can have any suitable value. It is preferably in a range between about 30 ° and about 60 °, in particular about 45 °. Due to the inclination of the receptacle 7, the pressing tongs can also be used where there is little room for the pressing tongs.
  • the receptacle 7 or the recesses 5, 6 are provided in an end section 33, 34 of the arms 18, 20 of the pressing jaws 1, 2.
  • the end portions 33, 34 are integrally formed with the pressing jaws 1, 2 in the embodiment. In principle, however, it is also possible to manufacture the end sections 33, 34 with the recesses 5, 6 as separate parts, which are subsequently connected to the remaining part of the pressing jaws 1, 2, for example by means of screws, rivets, latching spring pressure pieces and the like.
  • the end sections 33, 34 protrude beyond the one broad side 9, 35 of the pressing jaws 1, 2 (FIG. Fig. 2 ).
  • the end sections 33, 34 protrude only so far beyond the corresponding broad sides 9, 35 that the end sections 33, 34 do not break as a result of the high pressing forces.
  • the parts to be pressed can be inserted, the arms 18, 20 in the adjoining the end portions 33, 34 region corresponding recesses 37, of which in Fig. 2 the recess of the pressing jaw 1 is shown.
  • the recesses 37 extend to the broad side 9, 35 of the pressing jaws 1, 2 and are adapted in their outline shape to the outline shape of the recesses 5, 6.
  • the parts to be pressed also extend through the recesses 37 of the pressing jaws 1, 2.
  • the end sections 33, 34 each have a transverse center plane 36 (FIG. Fig. 2 ), which is perpendicular to the axis 31 and at the angle ⁇ to the transverse center plane 32 of the pressing jaws 1, 2 extends. If the angle ⁇ is 45 °, then the angle ⁇ also has the value of 45 °.
  • the end portions 33, 34 may also be provided so that their transverse center plane 36 in the transverse center plane 32 of the pressing jaws 1, 2 is located.
  • the axis 31 of the receptacle 7 is in this case at the angle ⁇ to the transverse center plane 32nd
  • the recesses 5, 6 have mutually parallel edges 38, 39, each extending in planes perpendicular to the axis 31. Between the edges 38, 39 of the recesses 5, 6, the corresponding pressing contour 40 is provided in the wall of the recesses, with which the parts are pressed radially.
  • the in Fig. 2 lower, over the broad side 35 projecting edge 39 extends to about half the thickness of the pressing jaw 1 and its arm 18.
  • the opposite edge 38 connects to a projection 41 which on the broad side 35 opposite broad side 42 (FIGS. Fig. 2 ) of the pressing jaws 1, 2 protrudes. As it turned out Fig. 1 results, the projections 41 of the pressing jaws 1, 2 in plan view approximately the shape of a quarter circle.
  • the projections 41 lie flat against one another with their mutually facing end faces, which lie in the end faces 3, 4 of the arms 18, 20 of the pressing jaws 1, 2.
  • the top 43 of the projections 41 is flat.
  • the upper sides 43 of the projections 41 go at an obtuse angle into the edges 38 containing upper sides 45 of the end portions 33, 34 of the pressing jaws 1, 2 over. Due to the protrusions 41, the end portions 33, 34 in the region of the recesses 5, 6 sufficient strength, so that the inserted into the receptacle 7 parts can be reliably compressed radially.
  • the edge 44 opposite outer side 46 of the projections 41 lies on the mantle of an imaginary cylinder.
  • the connecting plate 10 has in the region of these projections 41 a provided on the adjacent longitudinal side part-circular recess 47th so that the projections 41 can be moved freely relative to the connecting plate 10 during the pressing process.
  • end sections 33, 34 consist of independent components which are connected to the pressing jaws 1, 2, materials can be used for the end sections 33, 34 and the pressing jaws 1, 2 which are particularly advantageous for the intended application.
  • the 4 and 5 show a pressing device, the pressing jaws 1, 2 part of an intermediate pliers, to which a pressing ring 48 is attached. He is provided with the receptacle 7, which receives the workpieces to be pressed. In contrast to the previous embodiment, the recess 7 is no longer provided in the integrally formed with the pressing jaws 1, 2 end portions 33, 34.
  • the pressing ring 48 has the two jaws 49, 50, which are connected at their end facing away from the pressing jaws 1, 2 end articulated to each other via a hinge point 51.
  • the hinge point can be a bolt, for example, which passes through the two jaws 49, 50 at the free end and is axially secured in a suitable manner.
  • the two jaws 49, 50 are essentially mirror-symmetrical to one another.
  • the free ends of the jaws 49, 50 are connected to the free ends of the pressing jaws 1, 2.
  • This connection is detachable, so that the pressing ring 48 can be removed from the pressing jaws 1, 2 if necessary. For example, a damaged press ring can be easily replaced. It is also possible to connect pressing rings 48 with different pressing contours and / or differently sized receptacles 7 to the pressing jaws 1, 2.
  • the pressing ring 48 has the transverse center plane 36, which, as in the previous embodiment, at the angle ⁇ to the transverse center plane 32 of the pressing jaws 1, 2 lies ( Fig. 4 ).
  • the axis 31 of the receptacle 7 is at the angle ⁇ to the transverse center plane 32 of the pressing jaws 1, 2nd
  • the pressing ring 48 can be mounted in the inclined position with respect to the pressing jaws 1, 2, the pressing jaws 1, 2 are provided at its one end with a recess 52 which in Fig. 4 can be seen for the press jaw 1.
  • the other pressing jaw 2 has a corresponding recess. It is bounded by two abutting stop surfaces 53, 54 which are at right angles to each other.
  • the two jaws 49, 50 each have corresponding counter stop surfaces 55, 56, with which they rest flat against the stop surfaces 53, 54 of the pressing jaws 1, 2. In this way, the pressing ring 48 is properly positioned and held in its inclined position with respect to the pressing jaws 1, 2.
  • the jaws 49, 50 are connected by appropriate fastening means with the pressing jaws 1, 2.
  • the pressing jaws 1, 2 of the intermediate pliers are provided with caps, which engage with corresponding press ring 48 in corresponding recesses in the jaws 49, 50 of the pressing ring 48.
  • the intermediate pliers are connected to the motor drive device and actuates the pressing ring 48 during the pressing process.
  • the pressing jaws 1, 2 of the connected to the drive device intermediate pliers are pivoted toward each other in the direction that the arms 18, 20 of the pressing jaws 1, 2 from each other.
  • the opened pressing jaws 1, 2 of the intermediate pliers are attached to the jaws 49, 50 of the pressing ring 48 surrounding the workpiece in such a way that the intermediate pliers and the pressing ring 48 are positively connected to one another via the caps and recesses.
  • the abutment surfaces 53, 54 and the counter-abutment surfaces 55, 56 ensure that the pressing ring 48 and the intermediate pliers are accurately connected to each other.
  • the pressing jaws 1, 2 of the intermediate pliers are characterized by acting between them Compression spring, as described with reference to the previous embodiment, loaded in the direction of its closed position, whereby the coupling of the intermediate pliers is made easier to the pressing ring 48.
  • the jaws 49, 50 are closed via the arms 18, 20 of the pressing jaws 1, 2, thereby radially compressing the workpiece lying in the receptacle 7 ,
  • the in Fig. 5 shown closed position are the free ends of the jaws 49, 50 of the pressing ring 48 with side surfaces 57, 58 flat against each other.
  • the receptacle 7 in the press ring 48 has the same design as the basis of the pressing tongs according to the Fig. 1 to 3 has been described.
  • the pressing jaws 1, 2 have in this embodiment no depressions, which are provided in the jaws 49, 50 of the pressing ring 48.
  • the actuation of the pressing ring 48 takes place in the manner described on the pressing jaws 1, 2, in the same manner as in the pressing tongs according to the Fig. 1 to 3 be pressed during the pressing process with the aid of the brakes 29 connected to the motor drive device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die Erfindung betrifft eine Pressvorrichtung nach dem Oberbegriff des Anspruches 1. Eine Pressvorrichtung der eingangs genannten Art ist beispielsweise aus der DE-10/2009 012 199 B3 bekannt.The invention relates to a pressing device according to the preamble of claim 1. A pressing device of the type mentioned, for example, from DE-10/2009 012 199 B3 known.

Pressvorrichtungen in Form von Presszangen werden hauptsächlich in der Sanitärinstallation eingesetzt, um Rohre oder Rohrstücke über Verbindungsstücke, sogenannte Fittings, miteinander zu verbinden. Die Verbindungsstücke werden über die Enden zweier Rohre geschoben und radial plastisch verformt, um eine feste und dichte Verbindung zwischen den beiden Rohren über das Verbindungsstück zu erreichen. Die Presszangen haben hierfür zwei Pressbacken mit jeweils eingearbeiteter systemspezifischer Presskontur. Häufig müssen solche Verpressungen an Stellen vorgenommen werden, die mit der Presszange nur schwierig zu erreichen sind.Pressing devices in the form of pressing tongs are mainly used in the sanitary installation to connect pipes or pipe sections via fittings, so-called fittings. The connectors are slid over the ends of two tubes and radially plastically deformed to achieve a tight and tight connection between the two tubes via the connector. The pressing tongs have two press jaws for this purpose, each with an integrated system-specific press contour. Often such compression must be made in places that are difficult to achieve with the crimping pliers.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Pressvorrichtung so auszubilden, dass mit ihr auch Verpressungen in Bereichen durchgeführt werden können, die schwierig zu erreichen sind.The invention has the object of providing the generic pressing device in such a way that it can be performed with compressions in areas that are difficult to achieve.

Diese Aufgabe wird bei der gattungsgemäßen Pressvorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention in the generic pressing device with the characterizing features of claim 1.

Vorteilhaft liegt der Winkel, unter dem die Achse der Aufnahme schräg zur Quermittelebene der Pressbacken liegt, in einem Bereich zwischen etwa 30° und etwa 60°.Advantageously, the angle at which the axis of the receptacle is inclined to the transverse center plane of the pressing jaws, in a range between about 30 ° and about 60 °.

Ein bevorzugter Winkel liegt bei etwa 45°. Eine solche Pressvorrichtung kann für die meisten Anwendungsfälle eingesetzt werden.A preferred angle is about 45 °. Such a pressing device can be used for most applications.

Die Pressbacken haben in Endabschnitten Vertiefungen, die in der Schließstellung der Pressbacken die Aufnahme bilden.The pressing jaws have recesses in the end sections, which form the receptacle in the closed position of the pressing jaws.

Die Endabschnitte liegen geneigt zum restlichen Teil der Pressbacken. In diesem Falle ist es zweckmäßig, wenn die Achse der Vertiefungen senkrecht zur Quermittelebene dieser schrägliegenden Endabschnitte verläuft. Die schrägliegenden Endabschnitte ermöglichen den problemlosen Ansatz der Pressvorrichtung an die zu verpressenden Teile, wenn diese ungünstig beispielsweise in Raumecken liegen.The end portions are inclined to the remaining part of the pressing jaws. In this case, it is expedient if the axis of the depressions runs perpendicular to the transverse center plane of these oblique end portions. The oblique end portions allow the problem-free approach of the pressing device to the parts to be pressed, if they are unfavorable example in room corners.

Bei einer vorteilhaften Ausführungsform ragen die Endabschnitte über die eine Breitseite der Pressbacken. Dies erleichtert die Handhabung der Pressvorrichtung bei kritischen Einbauverhältnissen.In an advantageous embodiment, the end portions project beyond the one broad side of the pressing jaws. This facilitates the handling of the pressing device in critical installation conditions.

Die Vertiefungen weisen in vorteilhafter Weise parallel zueinander liegende Ränder auf, die jeweils in einer senkrecht zur Achse der Aufnahme verlaufenden Ebene liegen. Die die Vertiefung aufweisenden Teile der Pressbacken sind dadurch ausreichend stark, dass sie die bei der plastischen Verformung der Verbindungsstücke auftretenden Kräfte aufnehmen können.The recesses advantageously have mutually parallel edges, each extending in a direction perpendicular to the axis of the receptacle Lie flat. The depression having parts of the pressing jaws are characterized strong enough that they can absorb the forces occurring during the plastic deformation of the connecting pieces.

Der eine Rand der Vertiefungen ist vorteilhaft über einen Teil seiner Länge verstärkt ausgebildet. Dies trägt zur hohen Belastbarkeit des entsprechenden Pressbackenbereiches beim Pressvorgang bei.The one edge of the recesses is advantageously formed reinforced over part of its length. This contributes to the high load capacity of the corresponding pressing jaw area during the pressing process.

Diese Verstärkung wird vorteilhaft dadurch erreicht, dass der Endabschnitt einen über seine Oberseite ragenden Vorsprung aufweist, der den Rand der Vertiefungen verstärkt. Es ist grundsätzlich möglich, den gesamten Rand der Vertiefung verstärkt auszubilden. Es reicht aber auch aus, die Randverstärkung nur dort vorzusehen, wo hohe Belastungen auf den Vertiefungsrand wirken.This reinforcement is advantageously achieved in that the end portion has a projecting over its top projection, which reinforces the edge of the recesses. It is basically possible to reinforce the entire edge of the depression. However, it is also sufficient to provide the edge reinforcement only where high loads act on the recess edge.

Eine sichere Verpressung der Teile in der Aufnahme wird in vorteilhafter Weise dadurch sichergestellt, dass die Stirnseiten der Vorsprünge in der Schließstellung der Pressbacken aneinander liegen. Diese Stirnseiten sind in vorteilhafter Weise eben ausgebildet. Bevorzugt liegen die Stirnseiten der Vorsprünge in den einander zugewandten Stirnseiten der Pressbacken.A secure compression of the parts in the receptacle is advantageously ensured by the fact that the end faces of the projections are in the closed position of the pressing jaws together. These end faces are formed flat in an advantageous manner. The end faces of the projections preferably lie in the mutually facing end faces of the pressing jaws.

Bei einer vorteilhaften Ausführungsform sind die Endabschnitte einstückig mit den Pressbacken ausgebildet. Die Presszange lässt sich dadurch kostengünstig fertigen.In an advantageous embodiment, the end portions are formed integrally with the pressing jaws. The pressing tongs can be manufactured inexpensively.

Die beiden Backen des Pressringes sind jeweils mit einer Vertiefung versehen, die in Schließstellung der Backen die Aufnahme bilden. Die Backen des Pressringes können somit zum Einlegen des zu verpressenden Werkstückes mittels der Pressbacken der Pressvorrichtung auseinandergeschwenkt werden. Anschließend werden die Pressbacken der Pressvorrichtung beispielsweise mittels eines motorischen Antriebes so gegeneinander verschwenkt, dass die Backen des Pressringes geschlossen werden. Das in den Vertiefungen liegende Werkstück wird dadurch radial verpresst.The two jaws of the press ring are each provided with a recess which form the receptacle in the closed position of the jaws. The jaws of the press ring can thus be pivoted apart for insertion of the workpiece to be pressed by means of the pressing jaws of the pressing device. Subsequently, the pressing jaws of the pressing device are pivoted, for example by means of a motor drive against each other so that the jaws of the pressing ring are closed. The lying in the wells workpiece is thereby pressed radially.

Die Quermittelebene des Pressringes liegt in bevorzugter Weise unter einem von 90° abweichenden Winkel zur Quermittelebene der Pressbacken.The transverse center plane of the pressing ring is preferably at an angle deviating from 90 ° to the transverse center plane of the pressing jaws.

Der Anmeldungsgegenstand ergibt sich nicht nur aus dem Gegenstand der einzelnen Patentansprüche, sondern auch durch alle in den Zeichnungen und der Beschreibung offenbarten Angaben und Merkmale. Sie werden, auch wenn sie nicht Gegenstand der Ansprüche sind, als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.The subject of the application results not only from the subject matter of the individual claims, but also by all the information and features disclosed in the drawings and the description. They are, even if they are not the subject of the claims, claimed as essential to the invention, as far as they are new individually or in combination over the prior art.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand zweier in den Zeichnungen dargestellter Ausführungsbeispiele näher erläutert. Es zeigen

Fig. 1
in perspektivischer Darstellung eine erfindungsgemäße Pressvorrichtung,
Fig. 2
eine Seitenansicht die eine Pressbacke der Pressvorrichtung gemäß Fig. 1,
Fig. 3
eine Draufsicht auf die andere Pressbacke der Pressvorrichtung gemäß Fig. 1,
Fig. 4
in Seitenansicht einen Teil einer zweiten Ausführungsform einer erfindungsgemäßen Pressvorrichtung,
Fig. 5
eine Draufsicht auf die Pressvorrichtung gemäß Fig. 4.
The invention will be explained in more detail with reference to two embodiments shown in the drawings. Show it
Fig. 1
in a perspective view of a pressing device according to the invention,
Fig. 2
a side view of a pressing jaw of the pressing device according to Fig. 1 .
Fig. 3
a plan view of the other press jaw of the pressing device according to Fig. 1 .
Fig. 4
in side view part of a second embodiment of a pressing device according to the invention,
Fig. 5
a plan view of the pressing device according to Fig. 4 ,

Mit der Pressvorrichtung werden Verbindungsstücke plastisch verformt, die auf miteinander zu verbindende Rohre gesteckt werden. Die Pressvorrichtung wird hauptsächlich in der Sanitär- und Heizungstechnik eingesetzt. Die zu verformenden Verbindungsstücke können aus Metall und/oder aus Kunststoff bestehen. Durch die plastische Verformung werden die miteinander zu verbindenden Rohre und das Verbindungsstück sicher miteinander verbunden. Diese Radialpresstechnik ist bekannt und wird darum auch nicht näher erläutert.With the pressing device connecting pieces are plastically deformed, which are stuck on pipes to be joined together. The pressing device is mainly used in sanitary and heating technology. The joints to be deformed may be made of metal and / or plastic. Due to the plastic deformation, the pipes to be connected together and the connecting piece with each other safely connected. This Radialpresstechnik is known and is therefore not explained in detail.

Die Pressvorrichtung gemäß den Fig. 1 bis 3 ist eine Presszange mit zwei gegeneinander verschwenkbaren Pressbacken 1 und 2, die in der in Fig. 1 dargestellten Schließstellung mit ebenen Stirnseiten 3, 4 aneinanderliegen. Die Stirnseiten 3, 4 sind jeweils mit einer Vertiefung 5, 6 versehen, die in der Schließstellung der Pressbacken 1, 2 eine Aufnahme 7 für das zu verpressende (nicht dargestellte) Teil bilden. Die Aufnahme 7 hat im dargestellten Ausführungsbeispiel mehreckigen Umriss, kann aber auch jede andere geeignete Umrissform haben, beispielsweise kreisförmig ausgebildet sein. Die Form der Aufnahme 7 wird durch die sogenannte Presskontur bestimmt, mit der festgelegt wird, wie die Verbindungsstücke auf den Rohren radial verpresst werden.The pressing device according to the Fig. 1 to 3 is a pressing tongs with two mutually pivotable pressing jaws 1 and 2, in the in Fig. 1 shown closed position with flat end faces 3, 4 abut each other. The end faces 3, 4 are each provided with a recess 5, 6, which form a receptacle 7 for the part to be pressed (not shown) in the closed position of the pressing jaws 1, 2. The receptacle 7 has in the illustrated embodiment polygonal outline, but may also have any other suitable outline shape, for example, be circular. The shape of the receptacle 7 is determined by the so-called pressing contour, which determines how the connecting pieces are pressed radially on the tubes.

Die beiden Pressbacken 1, 2 sind spiegelsymmetrisch zueinander angeordnet und haben im Wesentlichen gleiche Dicke. An ihren einander gegenüberliegenden Außenseiten 8, 9 liegt jeweils eine Verbindungslasche 10, 11 an. Mit den beiden Verbindungslaschen 10, 11 werden die beiden Pressbacken 1, 2 gelenkig miteinander verbunden. Die Verbindungslaschen 10, 11 sind gleich ausgebildet und erstrecken sich senkrecht zur Längsmittelebene der Presszange. Nahe ihren beiden Enden sind die Verbindungslaschen 10, 11 mit jeweils einer Durchgangsöffnung für Bolzen 12, 13 versehen. Sie durchsetzen auch die zwischen ihnen liegenden Pressbacken 1, 2. Auf den Bolzen 12, 13 sind die Verbindungslaschen 10, 11 und die Pressbacken 1, 2 in bekannter Weise axial gesichert. Die Achsen 14, 15 der Bolzen 12, 13 bilden die Schwenkachsen für die Pressbacken 1, 2.The two pressing jaws 1, 2 are arranged mirror-symmetrically to each other and have substantially the same thickness. At their opposite outer sides 8, 9 is in each case a connecting tab 10, 11 at. With the two connecting straps 10, 11, the two pressing jaws 1, 2 are hinged together. The connecting straps 10, 11 are of the same design and extend perpendicular to the longitudinal center plane of the pressing tongs. Near their two ends, the connecting straps 10, 11 are each provided with a passage opening for bolts 12, 13. They also pass through the pressing jaws 1, 2 lying between them. The connecting straps 10, 11 and the pressing jaws 1, 2 are secured axially in a known manner on the pins 12, 13. The axes 14, 15 of the bolts 12, 13 form the pivot axes for the pressing jaws 1, 2.

Die Stirnseiten 3, 4 der Pressbacken 1, 2 gehen jeweils stumpfwinklig in Schrägflächen 16, 17 (Fig. 2 und 3) über, mit denen die Pressbacken 1, 2 in der Offenstellung flächig aneinander liegen. Der Übergang der Stirnseiten 3, 4 in die Schrägflächen 16, 17 liegt etwa in Höhe der Verbindungslaschen 10, 11.The end faces 3, 4 of the pressing jaws 1, 2 each have an obtuse angle in inclined surfaces 16, 17 (FIG. FIGS. 2 and 3 ), with which the pressing jaws 1, 2 lie flat against each other in the open position. The transition of the end faces 3, 4 in the inclined surfaces 16, 17 is approximately equal to the connecting straps 10, 11th

Die beiden Pressbacken 1, 2 sind jeweils als zweiarmige Hebel ausgebildet. Die Pressbacke 1 hat somit die Arme 18, 19 und die Pressbacke 2 die Arme 20, 21. Die Arme 18 bis 21 verjüngen sich jeweils in Richtung auf ihr freies Ende. Die Arme 18, 20 sind mit den Vertiefungen 5, 6 versehen. Die anderen Arme 19, 21 haben einander zugewandte Schrägflächen 22, 23, die in der in Fig. 1 dargestellten Schließstellung der Presszange in Richtung auf ihr freies Ende divergierend zueinander verlaufen. Die Schrägflächen 22, 23 sind eben und liegen stumpfwinklig zu den Schrägflächen 16, 17. Am Übergang zwischen den Schrägflächen 16, 22 und 17, 23 befindet sich jeweils eine teilkreisförmige Vertiefung 24, 25. Der gekrümmte Boden 26, 27 der Vertiefungen 24, 25 verbindet die Schrägflächen 22, 23 mit den Schrägflächen 16, 17.The two pressing jaws 1, 2 are each designed as a two-armed lever. The pressing jaw 1 thus has the arms 18, 19 and the pressing jaw 2 the arms 20, 21. The arms 18 to 21 each taper in the direction of their free end. The arms 18, 20 are provided with the recesses 5, 6. The other arms 19, 21 have mutually facing inclined surfaces 22, 23, in the in Fig. 1 shown closed position of the pressing tongs in the direction of their free end diverging to each other. The inclined surfaces 22, 23 are flat and lie at an obtuse angle to the inclined surfaces 16, 17. At the transition between the inclined surfaces 16, 22 and 17, 23 is in each case a part-circular recess 24, 25. The curved bottom 26, 27 of the recesses 24, 25th connects the inclined surfaces 22, 23 with the inclined surfaces 16, 17th

Die beiden Arme 19, 21 der Pressbacken 1, 2 sind durch wenigstens eine (nicht dargestellte) Druckfeder belastet, die in jeweils eine Sacklochbohrung 28 in den einander zugewandten Schrägflächen 16, 17 der beiden Pressbacken 1, 2 eingreift. In Fig. 2 ist die Sacklochbohrung 28 der Pressbacke 1 sichtbar. Eine entsprechende Sacklochbohrung ist auch bei der Pressbacke 2 vorgesehen. Die Druckfeder sorgt dafür, dass die Pressbacken 1, 2, wenn sie nicht an eine Antriebsvorrichtung angeschlossen sind, in die in Fig. 1 dargestellte Schließstellung geschwenkt werden.The two arms 19, 21 of the pressing jaws 1, 2 are loaded by at least one (not shown) compression spring which engages in each case a blind hole 28 in the mutually facing inclined surfaces 16, 17 of the two pressing jaws 1, 2. In Fig. 2 the blind hole 28 of the pressing jaw 1 is visible. A corresponding blind hole is also provided in the pressing jaw 2. The compression spring ensures that the pressing jaws 1, 2, if they are not connected to a drive device, in the in Fig. 1 shown closed position to be pivoted.

An den von der Aufnahme 7 abgewandten Rand der beiden Verbindungslaschen 10, 11 schließt mittig jeweils eine rechteckige Lasche 29 an, die in Richtung auf das freie Ende der Pressbackenarme 19, 21 von den Verbindungslaschen 10, 11 absteht und die im dargestellten Ausführungsbeispiel geringfügig dünner ist als die Verbindungslasche 10, 11. In der Zeichnung ist nur die eine Lasche 29 sichtbar. Die Verbindungslaschen 10, 11 und die Laschen 29 können auch gleich dick sind. Ebenso ist es möglich, die Laschen 29 dicker auszubilden als die Verbindungslaschen 10, 11, die vorteilhaft einstückig mit den Laschen 29 ausgebildet sind.At the side facing away from the receptacle 7 edge of the two connecting plates 10, 11 centrally connects in each case a rectangular tab 29 which projects in the direction of the free end of the pressing jaw arms 19, 21 of the connecting straps 10, 11 and which is slightly thinner in the illustrated embodiment as the connecting tab 10, 11. In the drawing, only one tab 29 is visible. The connecting straps 10, 11 and the tabs 29 can also be the same thickness. It is also possible to form the tabs 29 thicker than the connecting straps 10, 11, which are advantageously integrally formed with the tabs 29.

Die Laschen 29 haben mittig jeweils eine Durchgangsöffnung 30, die eine Aufnahme für den Anschluss der Presszange an eine (nicht dargestellte) motorische Antriebsvorrichtung bilden. Solche Antriebsvorrichtungen zur Betätigung der Presszange sind bekannt und werden darum nur kurz erläutert.The tabs 29 each have a through opening 30 in the middle, which form a receptacle for the connection of the pressing tongs to a (not shown) motor drive device. Such drive devices for actuating the pressing tongs are known and are therefore explained only briefly.

Eine solche Antriebsvorrichtung hat zwei Anschlussarme, die durch einen Steckbolzen mit den Laschen 29 verbunden werden. Der Steckbolzen wird durch die Durchgangsöffnungen 30 der Laschen 29 sowie durch entsprechende Öffnungen in den Anschlussarmen gesteckt und in geeigneter Weise axial gesichert. Damit ist die Presszange starr mit der Antriebsvorrichtung verbunden. Sie hat einen Stößel mit Druckrollen, die bei der Betätigung der Presszange an deren Schrägflächen 22, 23 abrollen. Der Stößel des Antriebsmotors wird aus einer Ausgangsstellung in Richtung auf die Presszange ausgefahren, wobei die Druckrollen auf die Schrägflächen 22, 23 der Pressbacken 1, 2 gelangen. Beim weiteren Ausfahren des Stößels werden dadurch die Pressbacken 1, 2 durch die Druckrollen um die Achsen 14, 15 entgegengesetzt zueinander nach außen geschwenkt, wodurch die Aufnahme 7 geschlossen und somit das in der Aufnahme befindliche Verbindungsstück radial verpresst wird. Sobald die Endstellung gemäß Fig. 1 erreicht ist, in der die Stirnseiten 3, 4 aneinander liegen, ist das in der Aufnahme 7 liegende Teil in ausreichendem Maße plastisch verformt.Such a drive device has two connecting arms, which are connected by a locking pin with the tabs 29. The locking pin is inserted through the through holes 30 of the tabs 29 and through corresponding openings in the connecting arms and axially secured in a suitable manner. Thus, the pressing tongs is rigidly connected to the drive device. It has a plunger with pressure rollers, which roll on the inclined surfaces 22, 23 upon actuation of the pressing tongs. The plunger of the drive motor is extended from a starting position in the direction of the pressing pliers, wherein the pressure rollers on the inclined surfaces 22, 23 of the pressing jaws 1, 2 arrive. Upon further extension of the plunger thereby the pressing jaws 1, 2 are pivoted by the pressure rollers about the axes 14, 15 opposite each other outwards, whereby the receptacle 7 is closed and thus the connection piece located in the receptacle is radially compressed. As soon as the end position according to Fig. 1 is reached, in which the end faces 3, 4 abut each other, the part lying in the receptacle 7 is sufficiently plastically deformed.

Zur Entnahme des verpressten Teiles wird der Antriebsmotor der Antriebsvorrichtung umgeschaltet, so dass der Stößel mit den Druckrollen zurückgefahren wird. Die Druckfeder zwischen den beiden Pressbacken 1, 2 sorgt dafür, dass die Pressbacken 1, 2 weiterhin in der Schließstellung gemäß Fig. 1 gehalten werden. Sobald der Stößel ausreichend weit zurückgefahren ist, können die beiden Pressbacken 1, 2 an ihren Armen 19, 21 gegen die Kraft der Druckfeder verschwenkt werden, wodurch die Aufnahme 7 geöffnet und das verpresste Teil entnommen werden kann.To remove the compressed part of the drive motor of the drive device is switched, so that the plunger is moved back with the pressure rollers. The compression spring between the two pressing jaws 1, 2 ensures that the pressing jaws 1, 2 continue in the closed position according to Fig. 1 being held. Once the plunger has moved back sufficiently far, the two pressing jaws 1, 2 can be pivoted on their arms 19, 21 against the force of the compression spring, whereby the receptacle 7 is opened and the compressed part can be removed.

Die Aufnahme 7 hat eine Achse 31 (Fig. 2), die unter einem spitzen Winkel α zu einer Quermittelebene 32 der Pressbacken 1, 2 liegt. Der Winkel α kann jeden geeigneten Wert haben. Bevorzugt liegt er in einem Bereich zwischen etwa 30° und etwa 60°, insbesondere bei etwa 45°. Durch die Schrägstellung der Aufnahme 7 kann die Presszange auch dort eingesetzt werden, wo wenig Raum für die Presszange vorhanden ist.The receptacle 7 has an axis 31 (FIG. Fig. 2 ), which lies at an acute angle α to a transverse center plane 32 of the pressing jaws 1, 2. The angle α can have any suitable value. It is preferably in a range between about 30 ° and about 60 °, in particular about 45 °. Due to the inclination of the receptacle 7, the pressing tongs can also be used where there is little room for the pressing tongs.

Die Aufnahme 7 bzw. die Vertiefungen 5, 6 sind in einem Endabschnitt 33, 34 der Arme 18, 20 der Pressbacken 1, 2 vorgesehen. Die Endabschnitte 33, 34 sind im Ausführungsbeispiel einstückig mit den Pressbacken 1, 2 ausgebildet. Grundsätzlich ist es aber auch möglich, die Endabschnitte 33, 34 mit den Vertiefungen 5, 6 als gesonderte Teile zu fertigen, die anschließend mit dem restlichen Teil der Pressbacken 1, 2 verbunden werden, beispielsweise mittels Schrauben, Nieten, einrastenden Federdruckstücken und dergleichen. Die Endabschnitte 33, 34 ragen über die eine Breitseite 9, 35 der Pressbacken 1, 2 (Fig. 2). Die Endabschnitte 33, 34 ragen nur so weit über die entsprechenden Breitseiten 9, 35, dass die Endabschnitte 33, 34 infolge der hohen Presskräfte nicht abbrechen. Damit in die Aufnahme 7 bzw. die Vertiefungen 5, 6 die zu verpressenden Teile eingelegt werden können, weisen die Arme 18, 20 in dem an die Endabschnitte 33, 34 anschließenden Bereich entsprechende Ausnehmungen 37 auf, von denen in Fig. 2 die Ausnehmung der Pressbacke 1 dargestellt ist. Die Ausnehmungen 37 erstrecken sich bis zur Breit-seite 9, 35 der Pressbacken 1, 2 und sind in ihrer Umrissform an die Umrissform der Vertiefungen 5, 6 angepasst. Die zu verpressenden Teile erstrecken sich auch durch die Ausnehmungen 37 der Pressbacken 1, 2.The receptacle 7 or the recesses 5, 6 are provided in an end section 33, 34 of the arms 18, 20 of the pressing jaws 1, 2. The end portions 33, 34 are integrally formed with the pressing jaws 1, 2 in the embodiment. In principle, however, it is also possible to manufacture the end sections 33, 34 with the recesses 5, 6 as separate parts, which are subsequently connected to the remaining part of the pressing jaws 1, 2, for example by means of screws, rivets, latching spring pressure pieces and the like. The end sections 33, 34 protrude beyond the one broad side 9, 35 of the pressing jaws 1, 2 (FIG. Fig. 2 ). The end sections 33, 34 protrude only so far beyond the corresponding broad sides 9, 35 that the end sections 33, 34 do not break as a result of the high pressing forces. Thus, in the receptacle 7 and the recesses 5, 6, the parts to be pressed can be inserted, the arms 18, 20 in the adjoining the end portions 33, 34 region corresponding recesses 37, of which in Fig. 2 the recess of the pressing jaw 1 is shown. The recesses 37 extend to the broad side 9, 35 of the pressing jaws 1, 2 and are adapted in their outline shape to the outline shape of the recesses 5, 6. The parts to be pressed also extend through the recesses 37 of the pressing jaws 1, 2.

Die Endabschnitte 33, 34 haben jeweils eine Quermittelebene 36 (Fig. 2), die senkrecht zur Achse 31 und unter dem Winkel β zur Quermittelebene 32 der Pressbacken 1, 2 verläuft. Wenn der Winkel α 45° beträgt, dann hat der Winkel β ebenfalls den Wert von 45°. Die Endabschnitte 33, 34 können auch so vorgesehen sein, dass ihre Quermittelebene 36 in der Quermittelebene 32 der Pressbacken 1, 2 liegt. Die Achse 31 der Aufnahme 7 liegt in diesem Fall unter dem Winkel α zur Quermittelebene 32.The end sections 33, 34 each have a transverse center plane 36 (FIG. Fig. 2 ), which is perpendicular to the axis 31 and at the angle β to the transverse center plane 32 of the pressing jaws 1, 2 extends. If the angle α is 45 °, then the angle β also has the value of 45 °. The end portions 33, 34 may also be provided so that their transverse center plane 36 in the transverse center plane 32 of the pressing jaws 1, 2 is located. The axis 31 of the receptacle 7 is in this case at the angle α to the transverse center plane 32nd

Die Vertiefungen 5, 6 haben parallel zueinander liegende Ränder 38, 39, die sich jeweils in senkrecht zur Achse 31 liegenden Ebenen erstrecken. Zwischen den Rändern 38, 39 der Vertiefungen 5, 6 ist in der Wandung der Vertiefungen die entsprechende Presskontur 40 vorgesehen, mit der die Teile radial verpresst werden. Der in Fig. 2 untere, über die Breitseite 35 vorstehende Rand 39 erstreckt sich bis etwa in halbe Dicke der Pressbacke 1 bzw. ihres Armes 18. Der gegenüberliegende Rand 38 schließt an einen Vorsprung 41 an, der über die der Breitseite 35 gegenüberliegende Breitseite 42 (Fig. 2) der Pressbacken 1, 2 vorsteht. Wie sich aus Fig. 1 ergibt, haben die Vorsprünge 41 der Pressbacken 1, 2 in Draufsicht etwa die Form eines Viertelkreises. In der Schließstellung der Presszange liegen die Vorsprünge 41 mit ihren einander zugewandten Stirnseiten flächig aneinander, die in den Stirnseiten 3, 4 der Arme 18, 20 der Pressbacken 1, 2 liegen. Die Oberseite 43 der Vorsprünge 41 ist eben. Über eine gerade Kante 44 (Fig. 1) gehen die Oberseiten 43 der Vorsprünge 41 stumpfwinklig in die die Ränder 38 enthaltenden Oberseiten 45 der Endabschnitte 33, 34 der Pressbacken 1, 2 über. Aufgrund der vorstehenden Vorsprünge 41 weisen die Endabschnitte 33, 34 im Bereich der Vertiefungen 5, 6 eine ausreichende Festigkeit auf, so dass die in die Aufnahme 7 eingelegten Teile zuverlässig radial verpresst werden können. Die der Kante 44 gegenüberliegende Außenseite 46 der Vorsprünge 41 liegt auf dem Mantel eines gedachten Zylinders. In der Schließstellung der Presszange gemäß Fig. 1 schließen die Außenseiten 46 der Vorsprünge 41 aneinander an und erstrecken sich über einen Winkelbereich von 180°. Die Kante 44 der Vorsprünge 41 verläuft in Schließstellung der Presszange (Fig. 1) senkrecht zu der die Stirnseiten 3, 4 enthaltenden Längsmittelebene der Presszange.The recesses 5, 6 have mutually parallel edges 38, 39, each extending in planes perpendicular to the axis 31. Between the edges 38, 39 of the recesses 5, 6, the corresponding pressing contour 40 is provided in the wall of the recesses, with which the parts are pressed radially. The in Fig. 2 lower, over the broad side 35 projecting edge 39 extends to about half the thickness of the pressing jaw 1 and its arm 18. The opposite edge 38 connects to a projection 41 which on the broad side 35 opposite broad side 42 (FIGS. Fig. 2 ) of the pressing jaws 1, 2 protrudes. As it turned out Fig. 1 results, the projections 41 of the pressing jaws 1, 2 in plan view approximately the shape of a quarter circle. In the closed position of the pressing tongs, the projections 41 lie flat against one another with their mutually facing end faces, which lie in the end faces 3, 4 of the arms 18, 20 of the pressing jaws 1, 2. The top 43 of the projections 41 is flat. Over a straight edge 44 ( Fig. 1 ), the upper sides 43 of the projections 41 go at an obtuse angle into the edges 38 containing upper sides 45 of the end portions 33, 34 of the pressing jaws 1, 2 over. Due to the protrusions 41, the end portions 33, 34 in the region of the recesses 5, 6 sufficient strength, so that the inserted into the receptacle 7 parts can be reliably compressed radially. The edge 44 opposite outer side 46 of the projections 41 lies on the mantle of an imaginary cylinder. In the closed position of the pressing tongs according to Fig. 1 Close the outer sides 46 of the projections 41 to each other and extend over an angular range of 180 °. The edge 44 of the projections 41 extends in the closed position of the pressing tongs ( Fig. 1 ) perpendicular to the end faces 3, 4 containing longitudinal center plane of the pressing tongs.

Die Verbindungslasche 10 weist im Bereich dieser Vorsprünge 41 eine an der benachbarten Längsseite vorgesehene teilkreisförmige Vertiefung 47 auf, so dass die Vorsprünge 41 beim Pressvorgang ungehindert relativ zur Verbindungslasche 10 bewegt werden können.The connecting plate 10 has in the region of these projections 41 a provided on the adjacent longitudinal side part-circular recess 47th so that the projections 41 can be moved freely relative to the connecting plate 10 during the pressing process.

Bestehen die Endabschnitte 33, 34 aus eigenständigen Bauteilen, die mit den Pressbacken 1, 2 verbunden werden, können für die Endabschnitte 33, 34 und die Pressbacken 1, 2 Werkstoffe verwendet werden, die für den vorgesehenen Einsatzfall besonders vorteilhaft sind.If the end sections 33, 34 consist of independent components which are connected to the pressing jaws 1, 2, materials can be used for the end sections 33, 34 and the pressing jaws 1, 2 which are particularly advantageous for the intended application.

Die Fig. 4 und 5 zeigen eine Pressvorrichtung, deren Pressbacken 1, 2 Teil einer Zwischenzange sind, an die ein Pressring 48 angesetzt ist. Er ist mit der Aufnahme 7 versehen, die die zu verpressenden Werkstücke aufnimmt. Im Unterschied zur vorigen Ausführungsform ist die Vertiefung 7 nicht mehr in den einstückig mit den Pressbacken 1, 2 ausgebildeten Endabschnitten 33, 34 vorgesehen.The 4 and 5 show a pressing device, the pressing jaws 1, 2 part of an intermediate pliers, to which a pressing ring 48 is attached. He is provided with the receptacle 7, which receives the workpieces to be pressed. In contrast to the previous embodiment, the recess 7 is no longer provided in the integrally formed with the pressing jaws 1, 2 end portions 33, 34.

Der Pressring 48 hat die beiden Backen 49, 50, die an ihrem von den Pressbacken 1, 2 abgewandten Ende über eine Gelenkstelle 51 gelenkig miteinander verbunden sind. Die Gelenkstelle kann beispielhaft ein Bolzen sein, der die beiden Backen 49, 50 am freien Ende durchsetzt und in geeigneter Weise axial gesichert ist. Die beiden Backen 49, 50 sind im Wesentlichen spiegelsymmetrisch zueinander ausgebildet.The pressing ring 48 has the two jaws 49, 50, which are connected at their end facing away from the pressing jaws 1, 2 end articulated to each other via a hinge point 51. The hinge point can be a bolt, for example, which passes through the two jaws 49, 50 at the free end and is axially secured in a suitable manner. The two jaws 49, 50 are essentially mirror-symmetrical to one another.

Die freien Enden der Backen 49, 50 sind an die freien Enden der Pressbacken 1, 2 angeschlossen. Diese Verbindung ist lösbar, so dass der Pressring 48 von den Pressbacken 1, 2 bei Bedarf abgenommen werden kann. So kann beispielsweise ein beschädigter Pressring einfach ausgetauscht werden. Es ist auch möglich, an die Pressbacken 1, 2 Pressringe 48 mit unterschiedlichen Presskonturen und/oder unterschiedlich großen Aufnahmen 7 anzuschließen.The free ends of the jaws 49, 50 are connected to the free ends of the pressing jaws 1, 2. This connection is detachable, so that the pressing ring 48 can be removed from the pressing jaws 1, 2 if necessary. For example, a damaged press ring can be easily replaced. It is also possible to connect pressing rings 48 with different pressing contours and / or differently sized receptacles 7 to the pressing jaws 1, 2.

Der Pressring 48 hat die Quermittelebene 36, die wie bei der vorigen Ausführungsform unter dem Winkel β zur Quermittelebene 32 der Pressbacken 1, 2 liegt (Fig. 4). Die Achse 31 der Aufnahme 7 liegt unter dem Winkel α zur Quermittelebene 32 der Pressbacken 1, 2.The pressing ring 48 has the transverse center plane 36, which, as in the previous embodiment, at the angle β to the transverse center plane 32 of the pressing jaws 1, 2 lies ( Fig. 4 ). The axis 31 of the receptacle 7 is at the angle α to the transverse center plane 32 of the pressing jaws 1, 2nd

Damit der Pressring 48 in der Schräglage bezüglich der Pressbacken 1, 2 montiert werden kann, sind die Pressbacken 1, 2 an ihrem einen Ende mit einer Ausnehmung 52 versehen, die in Fig. 4 für die Pressbacke 1 erkennbar ist. Die andere Pressbacke 2 weist eine entsprechende Ausnehmung auf. Sie wird durch zwei winklig zueinander liegenden Anschlagflächen 53, 54 begrenzt, die rechtwinklig zueinander liegen. Die beiden Backen 49, 50 haben jeweils entsprechende Gegenanschlagflächen 55, 56, mit denen sie flächig an den Anschlagflächen 53, 54 der Pressbacken 1, 2 anliegen. Auf diese Weise wird der Pressring 48 in seiner Schräglage bezüglich der Pressbacken 1, 2 einwandfrei positioniert und gehalten. Die Backen 49, 50 sind durch entsprechende Befestigungsmittel mit den Pressbacken 1, 2 verbunden. Die Pressbacken 1, 2 der Zwischenzange sind mit Kalotten versehen, die bei angeschlossenem Pressring 48 in entsprechende Vertiefungen in den Backen 49, 50 des Pressringes 48 eingreifen. Die Zwischenzange ist an die motorische Antriebsvorrichtung angeschlossen und betätigt den Pressring 48 beim Pressvorgang.Thus, the pressing ring 48 can be mounted in the inclined position with respect to the pressing jaws 1, 2, the pressing jaws 1, 2 are provided at its one end with a recess 52 which in Fig. 4 can be seen for the press jaw 1. The other pressing jaw 2 has a corresponding recess. It is bounded by two abutting stop surfaces 53, 54 which are at right angles to each other. The two jaws 49, 50 each have corresponding counter stop surfaces 55, 56, with which they rest flat against the stop surfaces 53, 54 of the pressing jaws 1, 2. In this way, the pressing ring 48 is properly positioned and held in its inclined position with respect to the pressing jaws 1, 2. The jaws 49, 50 are connected by appropriate fastening means with the pressing jaws 1, 2. The pressing jaws 1, 2 of the intermediate pliers are provided with caps, which engage with corresponding press ring 48 in corresponding recesses in the jaws 49, 50 of the pressing ring 48. The intermediate pliers are connected to the motor drive device and actuates the pressing ring 48 during the pressing process.

Zum Radialverpressen wird der Pressring 48, der von der Zwischenzange gelöst ist, um das zu verpressende Werkstück gelegt. Anschließend werden die Pressbacken 1, 2 der an die Antriebsvorrichtung angeschlossenen Zwischenzange in Richtung so zueinander geschwenkt, dass sich die Arme 18, 20 der Pressbacken 1, 2 voneinander entfernen. Die geöffneten Pressbacken 1, 2 der Zwischenzange werden so an die Backen 49, 50 des das Werkstück umschließenden Pressringes 48 angesetzt, dass die Zwischenzange und der Pressring 48 über die Kalotten und Vertiefungen formschlüssig miteinander verbunden sind. Die Anschlagflächen 53, 54 und die Gegenanschlagflächen 55, 56 sorgen dafür, dass der Pressring 48 und die Zwischenzange positionsgenau miteinander verbunden werden. Die Pressbacken 1, 2 der Zwischenzange werden durch die zwischen ihnen wirkende Druckfeder, wie anhand der vorigen Ausführungsform beschrieben, in Richtung auf Ihre Schließstellung belastet, wodurch die Kopplung der Zwischenzange an den Pressring 48 erleichtert wird. Wenn anschließend die Arme 19, 21 der Pressbacken 1, 2 mit Hilfe der beschriebenen motorischen Antriebsvorrichtung auseinandergedrückt werden, werden die Backen 49, 50 über die Arme 18, 20 der Pressbacken 1, 2 geschlossen und dabei das in der Aufnahme 7 liegende Werkstück radial verpresst. In der in Fig. 5 dargestellten Schließstellung liegen die freien Enden der Backen 49, 50 des Pressringes 48 mit Seitenflächen 57, 58 flächig aneinander.For radial compression of the pressing ring 48, which is released from the intermediate pliers, placed around the workpiece to be pressed. Subsequently, the pressing jaws 1, 2 of the connected to the drive device intermediate pliers are pivoted toward each other in the direction that the arms 18, 20 of the pressing jaws 1, 2 from each other. The opened pressing jaws 1, 2 of the intermediate pliers are attached to the jaws 49, 50 of the pressing ring 48 surrounding the workpiece in such a way that the intermediate pliers and the pressing ring 48 are positively connected to one another via the caps and recesses. The abutment surfaces 53, 54 and the counter-abutment surfaces 55, 56 ensure that the pressing ring 48 and the intermediate pliers are accurately connected to each other. The pressing jaws 1, 2 of the intermediate pliers are characterized by acting between them Compression spring, as described with reference to the previous embodiment, loaded in the direction of its closed position, whereby the coupling of the intermediate pliers is made easier to the pressing ring 48. When subsequently the arms 19, 21 of the pressing jaws 1, 2 are pressed apart with the aid of the described motor drive device, the jaws 49, 50 are closed via the arms 18, 20 of the pressing jaws 1, 2, thereby radially compressing the workpiece lying in the receptacle 7 , In the in Fig. 5 shown closed position are the free ends of the jaws 49, 50 of the pressing ring 48 with side surfaces 57, 58 flat against each other.

Die Aufnahme 7 im Pressring 48 hat die gleiche Ausbildung, wie sie anhand der Presszange gemäß den Fig. 1 bis 3 beschrieben worden ist. Die Pressbacken 1, 2 haben bei dieser Ausführungsform keine Vertiefungen, die in den Backen 49, 50 des Pressringes 48 vorgesehen sind. Die Betätigung des Pressringes 48 erfolgt in der beschriebenen Weise über die Pressbacken 1, 2, die in gleicher Weise wie bei der Presszange gemäß den Fig. 1 bis 3 beim Pressvorgang mit Hilfe der an die Laschen 29 angeschlossenen motorischen Antriebsvorrichtung betätigt werden.The receptacle 7 in the press ring 48 has the same design as the basis of the pressing tongs according to the Fig. 1 to 3 has been described. The pressing jaws 1, 2 have in this embodiment no depressions, which are provided in the jaws 49, 50 of the pressing ring 48. The actuation of the pressing ring 48 takes place in the manner described on the pressing jaws 1, 2, in the same manner as in the pressing tongs according to the Fig. 1 to 3 be pressed during the pressing process with the aid of the brakes 29 connected to the motor drive device.

Claims (4)

  1. A compression device with at least two pressing jaws (1, 2), at least one of which can be adjusted from a closed position into an open position, with a receptacle (17) for a part to be compressed, the axis (31) of which extends at an angle (α) other than 90° relative to the transverse center plane (32) of the pressing jaws (1, 2), wherein said receptacle is provided on a compression ring (48) that is connected to the pressing jaws (1, 2) and features two jaws (49, 50) that are connected to the ends of the pressing jaws (1, 2) and connected to one another in an articulated fashion on their ends that face away from the pressing jaws (1, 2),
    characterized in that the pressing jaws (1, 2) are on the free end provided with orthogonally extending stopping faces (53, 54), on which the jaws (49, 50) of the compression ring (48) abut with counter stopping faces (55, 56).
  2. The compression device according to claim 1,
    characterized in that the axis (31) of the receptacle (7) extends at an angle (α) between about 30° and about 60°, preferably about 45°, relative to the transverse center plane (32) of the pressing jaws (1, 2).
  3. The compression device according to claim 1 or 2,
    characterized in that the jaws (49, 50) of the compression ring (48) are respectively provided with a recess that forms the receptacle (7) in the closed position of the jaws (49, 50).
  4. The compression device according to one of claims 1 to 3,
    characterized in that the transverse center plane (36) of the compression ring (48) extends at an angle (β) other than 90° relative to the transverse center plane (32) of the pressing jaws (1, 2).
EP14000641.2A 2013-03-05 2014-02-24 Compression device Not-in-force EP2774725B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310004029 DE102013004029A1 (en) 2013-03-05 2013-03-05 pressing device

Publications (2)

Publication Number Publication Date
EP2774725A1 EP2774725A1 (en) 2014-09-10
EP2774725B1 true EP2774725B1 (en) 2016-04-27

Family

ID=50193176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14000641.2A Not-in-force EP2774725B1 (en) 2013-03-05 2014-02-24 Compression device

Country Status (3)

Country Link
EP (1) EP2774725B1 (en)
DE (1) DE102013004029A1 (en)
ES (1) ES2581153T3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20016060U1 (en) * 2000-09-16 2000-12-28 Volp Rainer Crimping pliers
DE20018312U1 (en) * 2000-10-26 2001-05-10 Franz Viegener Ii Gmbh & Co Kg Press tool
DE20318618U1 (en) * 2003-12-02 2005-04-14 Gustav Klauke Gmbh Pair of jaws for press tool has connecting straps with pivot pins and presses pair of crimping tools together when tail ends are forced apart by rollers on longitudinally-moving shaft
DE202004008280U1 (en) * 2004-05-25 2004-08-19 Graaf, Helmut Press tool for press connection of water pipes in areas with difficult access has individual angled press contour dependent upon requirements
DE102007013706B3 (en) * 2007-03-22 2008-11-13 Rothenberger Ag Pressing device for tubular workpieces
DE102009012199B3 (en) * 2009-03-07 2010-06-10 Rothenberger Ag Pressing device for tubular workpieces

Also Published As

Publication number Publication date
DE102013004029A1 (en) 2014-09-11
EP2774725A1 (en) 2014-09-10
ES2581153T3 (en) 2016-09-01

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