EP2796245B1 - Pressing tool - Google Patents

Pressing tool Download PDF

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Publication number
EP2796245B1
EP2796245B1 EP13164965.9A EP13164965A EP2796245B1 EP 2796245 B1 EP2796245 B1 EP 2796245B1 EP 13164965 A EP13164965 A EP 13164965A EP 2796245 B1 EP2796245 B1 EP 2796245B1
Authority
EP
European Patent Office
Prior art keywords
pressing
actuating
jaws
pressing tool
tool
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.)
Active
Application number
EP13164965.9A
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German (de)
French (fr)
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EP2796245A1 (en
Inventor
Roman Hausheer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geberit International AG
Original Assignee
Geberit International AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geberit International AG filed Critical Geberit International AG
Priority to EP13164965.9A priority Critical patent/EP2796245B1/en
Publication of EP2796245A1 publication Critical patent/EP2796245A1/en
Application granted granted Critical
Publication of EP2796245B1 publication Critical patent/EP2796245B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B25/00Implements for fastening, connecting or tensioning of wire or strip
    • B25B25/005Implements for fastening, connecting or tensioning of wire or strip for applying wire clasps to hose couplings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand 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
    • B25B27/10Hand 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 present invention relates to a pressing tool according to the preamble of claim 1.
  • fittings In the construction of pipe networks for water supply, for example in a domestic installation, individual pipes or pipe sections are regularly connected with fittings.
  • a fitting is for example from the EP 2 341 273 known.
  • the fittings are thereby mechanically deformed and clamped against the pipe, whereby a fluid-tight connection between the pipe and fitting is provided.
  • the fitting must be defined with a pressing tool and deformed reproducibly.
  • the WO 03/078102 A1 teaches a crimping tool with locking plates fixedly mounted on the crimping jaws for blocking the actuating device when the crimping jaws are in a position in which they should not be actuated.
  • the DE 20 2008 015574 U1 teaches another crimping tool with a jaw return and an actuator.
  • the invention has as an object to provide a pressing tool, which overcomes the disadvantages of the prior art.
  • a pressing tool should be specified with which the quality of the pressing can be increased and ensured.
  • a pressing tool for pressing a compact, in particular a fitting or a pipe section to the pipe connection two lever-type pressing jaws which are mounted like a pliers for clamping between a receiving position and a pressing position against each other or in opposite directions and each having a pressing portion and an actuating portion, wherein the pressing sections in the receiving position form a press receptacle for the pressed article, such that the press sections during the pivoting from the receiving position via a minimum closing position into the pressing position pre-determine the compact received in the press receptacle, and wherein at least one of the actuating sections is designed to be actuatable by an actuating device, achieved by the pressing tool further comprises a control which blocks the actuating device as long as the pressing jaws adopt a position which lies between the receiving position and the minimum closing position.
  • the control element which controls the actuating device, has a contact part for contacting the actuating device, which is mounted movably relative to the actuating sections, at least insofar as it blocks it under a predetermined condition or releases it for operative engagement with the actuating section of the tool. It is thus an aspect of the present invention to provide a pressing tool, in particular for the manual compression of pipe sections or clamps, which allows a compression of the compact only in its position-appropriate recording in the press receptacle of the tool.
  • the press tool specified herein thus prevents, due to its construction, a faulty compression of pipe sections or pipe clamps or clamps due to, for example, time pressure or poor access to the press point and thus contributes to ensuring professional pipe connections.
  • the pressing jaws are preferably formed in one piece. Preference is given to using metal, in particular tempered steel, as the construction material of the pressing tool. Surfaces which are subjected to pressure in the course of pressing are advantageously made of hardened steel. Particularly advantageous are pressing jaws which do not overlap and each have a pivot axis, so that the pressing jaw or pressing lever by means of two spaced pivot axes in a carrier, for example. A connecting strap, are attached. The attachment should be such that the pressing jaws are pivotable in opposite directions about the bearing. Here it is advantageous to arrange an additional leading rolling body between the pressing jaws. Alternatively, it is conceivable to provide the pressing jaws coupled across the same pivoting axis.
  • this contact part is designed such that the contact part, the actuating device, which, for example, in the form of a tappet-guided roller pair acts on the tool, contacted before the actuator acts to pivot on the actuating portions.
  • the pressing step temporally and spatially upstream and in particular controlled contacting the control with the actuator ensures that the actuator is reliably guided in the predetermined Blockade too if a pressing jaw position is present, indicating that the compact is not optimal in the recording.
  • the control preferably has two mutually displaceable parts. These parts, the contact part and the anchoring part, are preferably configured such that an intermediate spring element, in particular in the form of a compression spring, the parts apart without external action in a rest position, wherein the two parts with a force against the spring element from the rest position via a Sliding way are zuzuschiebbar each other.
  • This sliding path is in this case dimensioned such that one of the parts of the control element and the actuating device compressing the control can be guided to a stop or, depending on the position of the pressing jaws, can be continued beyond this point, so that the actuating device can then effect the pressing.
  • bias voltage applied in the direction of the closed position.
  • This bias is preferably dimensioned such that the pressing jaws press on the recorded in the press receptacle compact, without, however, this already appreciably deform, or to press.
  • the bias should in this case be chosen so that a user of the tool without difficulty multiple and without excessive fatigue manually by pure body force the press jaws to release the compressed compact and / or to receive another compact in the receiving position can pivot in opposite directions.
  • At least one spring element is arranged in the pressing tool, preferably between the pressing jaws.
  • the spring element is arranged such that the pressing portions are acted upon by said bias, said bias presses the pressing jaws against the pressing position, such that a recorded in the press receptacle compact is contacted by the pressing sections.
  • the bias is in this case chosen so that it alone is not sufficient to compress the compact to compress.
  • Particularly preferred is an electric actuating device which allows a mobile pressing device from the pressing tool and this actuating device described herein.
  • each pressing jaw has a blind hole, wherein openings of the blind holes are preferably arranged directly opposite one another when the pressing jaws are in the receiving position.
  • a spring element in particular a spiral or telescopic compression spring, can be arranged in these blind holes. This spring element, which extends in each case at a depth of each blind hole pending under tension in the long direction of the blind holes from a blind hole into the opposite, is preferably dimensioned so that the pressing jaws are held without external action on the pressing tool in the press position.
  • the blind holes are arranged so that they lie with their respective orientation or long direction on a straight line when the spring element is maximally relaxed, i. when the pressing jaws are in pressing positions.
  • This is advantageous in order to optimally guide the minimal spring action with maximum relaxation to the pressing sections.
  • This arrangement results in that the spring element is slightly bent in the receiving position transversely to the longitudinal direction, since the pressing jaws are guided by pivoting from the pressing position into the receiving position.
  • the spring element is in this case dimensioned so that, taking into account its position relative to the pivot axes of the pressing jaws, the desired preload is generated.
  • the contact part deviates without blocking in the direction of actuation when the pressure is applied, and the actuating device is free to pressurize the actuating sections in such a way that the compact is converted by deformation into the desired compressed clamping final state.
  • the press jaws each act as two-armed levers, which guide the desired pressing force on the press sections or the gripping portions on the compact due to their length rule under the lever law and the predefined effect of the actuator.
  • At least one, preferably both pressing jaws provide a stop for the contact part.
  • the contact part and the stop are each formed such that the contact part, if the pressing jaws occupy a position which lies between the receiving position and the minimum closing position over the contact surface of the contact part abuts against this stop and blocks the contact part contacting actuator in the direction of actuation before the actuating device acts on the at least one operating section.
  • the contact member thus engages the actuating movement of the actuator and blocks it at said stop, if the pressing jaws take a position indicating that the recording of the compact is not yet optimal.
  • the said stop is preferably formed in one or both operating portions as a passive element or attached thereto such that the stop as transverse stop edge in the course of the control is, if the operating portions lie in a position between the receiving position and the minimum closing position. Furthermore, the stop is provided in such a way that the stop is levered out of the barrel of the control element, in particular of the contact part, when the actuating sections are in the minimum closed position or closer to the pressing position.
  • a particularly preferred embodiment is a pressing tool, which further comprises a connecting plate as a bearing, in which the pressing jaws are mounted on pivot axes.
  • the connecting strap is in particular plate-shaped, such that it preferably partially integrally surrounds the pressing jaws laterally, in particular accommodates the pivot axes and serves as a supporting element.
  • the connecting plate preferably comprises two plate-shaped tab elements, which are arranged on both sides of the pressing jaws.
  • the actuating portions form an actuating recess for engagement of the actuating device in the actuating direction.
  • the control is arranged in this actuating recess.
  • the actuating recess widens out obliquely preferably opposite to the actuating direction conically outwards in such a way that the actuating device on pressing the pressing tool on these inclined surfaces pushing the compression causes. These inclined surfaces then provide a curved path or an inlet curve for the rollers of an actuator.
  • the contact part is shaped and mounted so that it passes by the pair of rollers pressed in the direction of actuation on the curved path.
  • the contact part thus preferably does not touch the curved path. Accordingly, the cam track is subjected to pressure only by the pair of rollers, the pair of rollers continuing to push apart the actuation sections so that the contact part between the cam tracks is pressed against the depth of the actuation recess without contact.
  • the stop is provided by attached to the respective operating portion, transverse stop edge at the proximal with respect to the pivot axes or the press receiving end portion of the inclined surfaces. So it is advantageous if both operating sections have such a stop.
  • the control element is preferably designed such that it further has the anchoring element, which is fixedly mounted in the actuating recess, preferably on the connecting tab.
  • the contact part is preferably mounted on the anchoring part or on the connecting plate in the actuating direction relative to the anchoring part displaceable in the actuating recess.
  • the pressing jaws are mounted parallel to each at its own pivot axis, wherein the two pressing jaws each have a preferably cam-like stop for the control.
  • the two pivot axes are preferably arranged transversely to the actuating direction spaced in the connecting plate, that the said, displaceably mounted in the actuating direction contact surface of the contact part in a transverse direction to the actuating direction between the pivot axes and the inclination of the attacks is chosen so inclined to said transverse direction that the pressing jaws which are present at the contact surface via their stops in a blockage layer can be moved in a sliding manner out of the blockage position into the receiving position via the actuating device on the contact surface.
  • the contact part has a substantially triangular shape in the direction of actuation tapered cross-sectional shape. Particularly preferred is when the anchoring part is fixed in the depth of the actuating recess, ie in the area the end of the actuating recess in the actuating direction. Ideally, then the contact part against this depth in the direction of actuation telescopic or movable.
  • a restoring element between the anchoring part and the contact part is arranged, wherein the control element preferably has an adjusting element for setting a pretensioning of the restoring element.
  • the anchoring part and the contact part are formed sleeve-shaped, that a restoring element spring element, in particular a coil spring or compression spring extends from one part of the control to the other and provides a bias for returning the contact part in the starting position.
  • the pressing tool has an anti-rotation device for the contact part, wherein this anti-rotation device prevents rotational movement of the contact part about an axis parallel to the actuating direction.
  • This rotation is preferably provided by a directed in the direction of actuation grooves-comb-guide between the contact part and connecting strap or contact part and anchoring part.
  • the press receptacle of the pressing tool described herein is to be understood as the press jaw of the tool and is formed according to a first embodiment such that pipe clamps are compressible with ear gap straps and shaped according to a second embodiment such that pipe sections are compressible.
  • an electrically operated actuating device with rollers is particularly preferred.
  • the rollers are configured to press on the contact part of the control and wherein the rollers are further configured to act on the actuating portions for pivoting the pressing portions, when the contact part is pressed in the actuating direction to over the stop in the depth of the Betchen Inc.
  • the press tool or press apparatus described herein is used to make a pipe joint.
  • FIG. 1 shows a perspective view of a preferred first embodiment of the inventive compression tool 2 with a roller pair 72 of a preferably mobile and electrically operated actuator 70th
  • the pressing tool 2 comprises a first pressing jaw 10 and a second pressing jaw 20 and forms with the pair of rollers 72 and the actuating device the pressing device 1.
  • the two elongated pressing jaws 10, 20 are arranged parallel to one another and thus symmetrical to one another and in each case via a pivot axis 51, 52 stored in a connecting plate 50 pincer-like pivoting.
  • the first pressing jaw 10 has a first pressing section 12 and the second pressing jaw 20 has a second pressing section 22.
  • the two pressing sections 12, 22 are shaped in such a way that they form a press receptacle 30, which are each distally guided by a gripping section 121, 221 (see FIG. Fig. 3 ) is limited.
  • a pipe clamp 80 is shown with an ear gap tab.
  • the ear gap tab of the tube clamp 80 engages the press receptacle 30 and is to be pressed.
  • FIG. 2 shows in a second perspective view, a second embodiment of the inventive compression tool 2, wherein in the second embodiment according to FIG. 2 the press receptacle 30 is shaped such that pipe sections 82 can be received and pressed by the pressing tool 2 as a compact.
  • the press receptacle 30 should therefore be designed generally adapted to the compact.
  • the first and second embodiments according to the FIGS. 1, 2 each further comprise a control element 40, which is arranged in an actuating recess 32, which is formed by the pressing jaws 10, 20 opposite the press receptacle 30.
  • the control member 40 contacts the pair of rollers 72 before the pair of rollers 72, the pressing force acting on the actuating portions 14, 24 acts, and leads the pair of rollers 72 in the BetreliriensausNFung 32, depending on the position of the actuating portions 14, 24, either on a blocking cam or stop 17, 27 or on this stop 17, 27 over into a depth of the Bettechnikriensaus Principleung 32nd
  • FIG. 3 shows the pressing tool 2 in the receiving position, without actuation-side roller contact.
  • FIG. 4 shows the pressing tool 2 with pressing jaws 10, 20 in a position between the receiving position and a minimum closing position with corresponding roller contact, wherein a pair of rollers 72 is blocked by the control element 40 due to the position of the actuating portions 14, 24 in the direction of actuation R.
  • FIG. 5 shows the situation according to FIG. 4 , wherein the pressing jaws 10, 20 are in press-fitting, the ear gap clip of the tube clamp 80 cross-pressing position and the pair of rollers 72 in the direction of actuation R is free.
  • FIG. 6 shows the situation according to FIG.
  • FIG. 7 shows, finally, how the inclined surfaces 15,25 on the direction of actuation R advanced rigidly mounted pair of rollers roll past 72 and how the actuating portions 14, 24 are pressed apart, so that the pressing sections 12, 22 have pressed the compact predestined.
  • FIG. 3 shows a longitudinal section through the pressing tool 2 and the pair of rollers 72.
  • the first, elongated pressing jaw 10 recognizable.
  • the first pressing jaw 10 is formed in one piece and as a two-armed lever with anchored in the bracket 50 pivot axis 51.
  • the connecting plate 50 consists of two plates 50, which are arranged on both sides of the pressing jaws 10, 20.
  • right of the pivot axis 51 of the pressing portion 12 can be seen, left of the first pivot axis 51 of the actuating portion 14.
  • the pivot axis 51 is vertically centered in the pressing jaw 10.
  • the pressing portion 12 is in its longitudinal extension about half as long as the actuating portion 14, which provides ideal leverage ratios due to the prevailing forces.
  • the first pressing jaw 10 is pivotally fixed in the connecting plate 50 via the first pivot axis 51.
  • the second, substantially identical pressing jaw 20 is mirror-inverted. Also, the second pressing jaw 20 is detected in the same connecting plate 50 via the second pivot axis 52.
  • a rolling body 60 is arranged (s. Fig. 4 ).
  • corresponding recesses in the pressing jaws 10, 20 are arranged in the region of a connecting line between the two pivot axes 51, 52.
  • the mutually pivotable pressing sections 12, 22 each have a press recess 120, 220 in the press-side end section. This press recess 120, 220 form the press receptacle 30.
  • a flat press stop 13, 23 adjoins the press recess 120, 220.
  • the pressing sections 12, 22 are now shaped such that in the pressing position or position of the first press stop 13 and the second press stop 23 abut each other and limit the pressing movement.
  • the press recess 120, 220 are delimiting the gripping sections 121, 221, such that the press sections 12, 22 form a substantially C-shaped cross section between the press stops 13, 23 and the gripping sections 121, 221.
  • the length of the gripping sections 121, 221 is dimensioned in the transverse direction in such a way that the gripping sections 121, 221 are pressed together (see FIG FIG. 7 ) are spaced from one another by substantially twice the material thickness of the pipe clamp or its ear gap strap, while the press stops 13, 23 abut each other.
  • the actuating sections 14, 24 each have a blind hole 18, 28.
  • the openings of the blind holes 18, 28 are in the receiving position of the pressing jaws 10, 20 according to FIG. 3 directly opposite.
  • the blind holes 18, 28 run from their opening at an angle to their depths of respective pressing sections 12, 22 away, such that the blind holes 18, 28 in press-lying pressing jaws 10, 20 (s. FIG. 7 ) face each other in a straight line.
  • a spring element 35 is inserted in the form of a compression spring which presses the pressing jaws 10, 20 respectively against the pressing position.
  • the actuating portions 14, 24 are shaped such that the actuating side open actuating recess 32 is formed.
  • the Betsch Trentsaus Principleung 32 extends in the direction of actuation R (from left to right in FIG. 3 ), such that each actuating section 14, 24 provides an inclined surface 15, 25 at an angle to the direction of actuation R and providing a curved path for the pair of rollers 72.
  • both the first actuating portion 14 has a first stop 17 in the form of a transverse to the direction of actuation R stop edge and the second operating portion 24 a stop 27 in the form of such a stop edge.
  • the stops 17, 27 are each formed in the actuating portions 14, 24, that they are each spaced apart in each position of the pressing jaws 10, 20 between the receiving position and the pressing position, so that the control element 40 can extend between them to the outside.
  • the Betsch Trentsaus supraung 32 continues against its depth behind the stops 17, 27 in the direction of actuation R on and widens against the pivot axes 51, 52 out to form a receiving chamber for the control element 40 or parts of the control element 40.
  • the control element 40 comprises an anchoring part 44, which is firmly anchored in the depth of the actuating recess 32.
  • the anchoring part 44 is determined here on the connection tab 50 attached on both sides.
  • the anchoring part 44 extends with a in the first embodiment in cross-section circularly configured telescopic arm 440 against the actuation direction R from the depth of Betchan Technsaus principleung 32 through the stops 17, 27, wherein the free end portion of the telescopic arm 440 a telescopically mounted on the telescopic arm 440 slidably mounted contact part 42 of the control 40 is attached.
  • the telescopic arm 440 engages in a telescopic recess 420 of the contact part 42.
  • the telescopic arm 440 of the anchoring part 44 has at its free end a thickening 45, which is inserted into the telescopic recess 420 of the contact part 42.
  • the contact part 42 engages with a narrowing end portion 47, the thickening 45 of the telescopic arm 44, whereby the contact part 42 and anchoring part 44 engage each other and have an end portion 47 and thickening 45 provided end stop, in which it pushes a return element 46.
  • This end stop defines a maximum extension position of the contact part 42 against the R direction and relative to the anchoring part 44. In the maximum extended position, also called rest position of the contact part 42 so contact part 42 and anchoring member 44 are removed.
  • the contact part 42 is in this case of substantially triangular auslandender cross-sectional shape, which substantially fills the actuating recess 32 (s. Figs. 1 to 6 ) and has at its proximal end with respect to the pivot axes 51, 52 extending transversely to the direction of actuation R contact surface 43 for abutment on the cam-like stops 17, 27 of the pressing jaws 10, 20.
  • the contact part 42 has by the triangular widening against the pair of rollers 72 a sufficiently large contact surface for contact with the pair of rollers 72.
  • the contact part 42 is mounted on or in the anchoring part 44 such that the contact part 42 lies in the rest position in front of the stops 17, 27 (see FIG FIG. 3 ).
  • the restoring element 46 acts in the form of a compression spring in order to place the contact part 42 in the rest position against the R direction to the outside.
  • the return element 46 is in this case mounted in an extending through the telescopic arm 440 outwardly blind hole parallel to the actuator R in the anchoring part 44 and extends into the contact part 42.
  • the telescopic recess 420 of the contact part 42 is configured as a through hole in the direction of actuation R, wherein the Telescopic arm 440 of the anchoring part 44 and the compression spring 46 engage in this through hole 420.
  • the resetting element 46 emerging from the blind hole of the anchoring part 44 thus extends into this through-hole 420 of the contact part 42 and ends in an adjusting element 48 of the contact part 42.
  • the adjusting element 48 is a bolt with a blind hole-like, directed against the Betreliistsaus Principleung 32 recess into which the restoring element 46 engages and at the depth of which it is biased.
  • the adjustment member 48 is in threaded engagement with the contact portion 42 of the control member 40.
  • the bias of the return element 46 is adjustable.
  • the contact part 42 has rounded recesses complementary to the pair of rollers 72 for optimum engagement of the roller pair 72.
  • control element 40 used in this case has no telescopic arm 440 in contrast to the first embodiment described; instead, the contact part 42 is guided on the connection tab 50. Otherwise, the two embodiments are the same function.
  • the tab element 50 has on both sides of an additional, opposite to the R direction extending guide portions 61.
  • the actuating portions 14, 24 engage during pivoting in the receiving position between these guide portions 61 a.
  • These two guide sections 61 carry guide combs 62 running centrally in the R direction and directed against one another.
  • FIG. 10 Showing a cross section through the control 40, in particular by the contact part 42 and the guide portions 61 of the tab member 50th
  • the contact part 42 has the guide cams 62 aligned guide grooves 63 for engagement of the respective guide combs 62.
  • an anti-rotation lock 60 is provided, which ensures that the contact part 42 thus mounted in a linearly displaceable manner according to the second embodiment does not rotate about an axis parallel to the R-direction.
  • FIG. 9 shows the second embodiment according to Fig. 8 in a side view.
  • the press lever or pressing jaws 10, 20 are shown here in a pressed position; the Press stops 13, 23 lie on each other. It can be seen that the connecting strap 50 tapers substantially up to the guide sections 61 counter to the R direction, and the contact section 42 widens triangularly in the direction opposite to the R direction.
  • FIG. 11 shows a longitudinal section through the control element 40, in particular by the contact part 42 and a guide portion 61.
  • the guide comb 62 of this guide portion 61 has at its free end a thickening 45, which is inserted into the telescopic recess 420 of the contact part 42.
  • the contact part 42 overlaps with an end portion 470, the thickening 450 of both guide combs 62, whereby the contact part 42 and the connecting plate 50 and its guide portions 61 have an end stop, in which it pushes the spring element 46.
  • the pressing tool consists of fewer parts, since the contact part 42 is guided in the guide portion 61 of the tab 50 and thus, as shown Fig. 8 apparent, between the anchoring part 44 and the contact part 42, only the spring is guided as a direct connection element.
  • the guide portion 440 according to the first embodiment is no longer present.
  • the cam-like stops 17, 27 of both the first and the second embodiment of the pressing tool 2 have abutment surfaces 170, 270 on which the contact surface 43 of the contact part 42 abuts when the pressing jaws 10, 20 are pushed towards the receiving position via the minimum closing position.
  • the contact surface 43 is perpendicular to the R direction.
  • Said abutment surfaces 170, 270 are attached to the stop cams 17, 27 in such a way that they are parallel to the contact surface 43 when the pressing jaws 10, 20 are in the receiving position.
  • the stops 17, 27 and their stop surfaces 170, 270 in the R direction between the pivot axes 51, 52 are arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung betrifft ein Presswerkzeug nach dem Oberbegriff des Anspruchs 1.The present invention relates to a pressing tool according to the preamble of claim 1.

STAND DER TECHNIKSTATE OF THE ART

Bei der Konstruktion von Rohrnetzen zur Wasserversorgung, beispielsweise in einer Hausinstallation, werden regelmässig einzelne Rohre bzw. Rohrabschnitte mit Fittings verbunden. Ein solches Fitting ist beispielsweise aus der EP 2 341 273 bekannt geworden. Die Fittings werden dabei mechanisch verformt und gegen das Rohr geklemmt, wodurch eine fluiddichte Verbindung zwischen Rohr und Fitting bereitgestellt ist. Hierzu muss das Fitting mit einem Presswerkzeug definiert und reproduzierbar verformt werden.In the construction of pipe networks for water supply, for example in a domestic installation, individual pipes or pipe sections are regularly connected with fittings. Such a fitting is for example from the EP 2 341 273 known. The fittings are thereby mechanically deformed and clamped against the pipe, whereby a fluid-tight connection between the pipe and fitting is provided. For this purpose, the fitting must be defined with a pressing tool and deformed reproducibly.

Aus der EP 1 092 487 ist ein Presswerkzeug bekannt geworden, welches durch die Anordnung von Sensoren prüft, ob eine Verpressung korrekt ausgeführt wurde. Das Presswerkzeug nach der EP 1 092 487 weist den Nachteil auf, dass dieses mit anfälligen elektronischen Elementen ausgerüstet ist. Zudem besteht grundsätzlich die Möglichkeit, dass eine Verpressung durchgeführt wird, welche aufgrund falscher Führung des Presswerkzeugs fehlerhaft ist.From the EP 1 092 487 is a press tool has become known which checks by the arrangement of sensors, whether a compression was performed correctly. The pressing tool after the EP 1 092 487 has the disadvantage that it is equipped with vulnerable electronic elements. In addition, there is basically the possibility that a compression is performed, which is incorrect due to incorrect guidance of the pressing tool.

Die WO 03/078102 A1 lehrt ein Presswerkzeug mit fest auf den Pressbacken abgebrachten Blockierplatten zum Blockieren der Betätigungsvorrichtung, wenn die Pressbacken in einer Stellung sind, in welcher nicht betätigt werden sollte.The WO 03/078102 A1 teaches a crimping tool with locking plates fixedly mounted on the crimping jaws for blocking the actuating device when the crimping jaws are in a position in which they should not be actuated.

Die DE 20 2008 015574 U1 lehrt ein weiteres Presswerkzeug mit einer Backenrückstellung und einer Betätigungsvorrichtung.The DE 20 2008 015574 U1 teaches another crimping tool with a jaw return and an actuator.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Ausgehend von diesem Stand der Technik liegt der Erfindung als eine Aufgabe zugrunde, ein Presswerkzeug anzugeben, welches die Nachteile des Standes der Technik überwindet.Based on this prior art, the invention has as an object to provide a pressing tool, which overcomes the disadvantages of the prior art.

Insbesondere soll ein Presswerkzeug angegeben werden, mit welchem die Qualität der Verpressung erhöht und sichergestellt werden kann.In particular, a pressing tool should be specified with which the quality of the pressing can be increased and ensured.

Diese Aufgabe wird durch ein Presswerkzeug zum Verpressen eines Presslings, insbesondere eines Fittings oder eines Rohrabschnitts zur Rohrverbindung, umfassend zwei hebelartige Pressbacken, welche zum Verpressen zangenartig zwischen einer Aufnahmelage und einer Presslage gegeneinander bzw. gegenläufig verschwenkbar gelagert sind und jeweils einen Pressabschnitt und einen Betätigungsabschnitt aufweisen,
wobei die Pressabschnitte in Aufnahmelage eine Pressaufnahme für den Pressling bilden, derart, dass die Pressabschnitte bei der Verschwenkung aus der Aufnahmelage über eine Mindestschliesslage in die Presslage den in der Pressaufnahme aufgenommenen Pressling vorbestimmt verpressen,
und wobei mindestens einer der Betätigungsabschnitte durch eine Betätigungsvorrichtung betätigbar ausgestaltet ist, dadurch gelöst, dass
das Presswerkzeug weiter ein Steuerelement umfasst, welches die Betätigungsvorrichtung blockiert, solange die Pressbacken eine Lage einnehmen, welche zwischen der Aufnahmelage und der Mindestschliesslage liegt. Das Steuerelement, welches die Betätigungsvorrichtung steuert, weist - zumindest insoweit, als es dieses unter vorbestimmten Voraussetzung blockiert bzw. zum Wirkeingriff auf die Betätigungsabschnitt des Werkzeugs freigibt - ein Kontaktteil zur Kontaktierung der Betätigungsvorrichtung auf, welches beweglich relativ zu den Betätigungsabschnitten gelagert ist.
Es ist somit ein Aspekt der vorliegenden Erfindung, ein Presswerkzeug insbesondere zur manuellen Verpressung von Rohrabschnitten bzw. Klemmen anzugeben, welches eine Verpressung des Presslings erst bei dessen lagegerechter Aufnahme in der Pressaufnahme des Werkzeugs erlaubt. Das hierin angegebene Presswerkzeug beugt also aufgrund seiner Konstruktion einer fehlerhaften Verpressung von Rohrabschnitten oder Rohrklemmen bzw. Briden aufgrund von bspw. Zeitdruck oder schlechten Zugang zur Pressstelle vor und trägt so zur Sicherstellung fachgerechter Rohrverbindungen bei.
This object is achieved by a pressing tool for pressing a compact, in particular a fitting or a pipe section to the pipe connection two lever-type pressing jaws, which are mounted like a pliers for clamping between a receiving position and a pressing position against each other or in opposite directions and each having a pressing portion and an actuating portion,
wherein the pressing sections in the receiving position form a press receptacle for the pressed article, such that the press sections during the pivoting from the receiving position via a minimum closing position into the pressing position pre-determine the compact received in the press receptacle,
and wherein at least one of the actuating sections is designed to be actuatable by an actuating device, achieved by
the pressing tool further comprises a control which blocks the actuating device as long as the pressing jaws adopt a position which lies between the receiving position and the minimum closing position. The control element, which controls the actuating device, has a contact part for contacting the actuating device, which is mounted movably relative to the actuating sections, at least insofar as it blocks it under a predetermined condition or releases it for operative engagement with the actuating section of the tool.
It is thus an aspect of the present invention to provide a pressing tool, in particular for the manual compression of pipe sections or clamps, which allows a compression of the compact only in its position-appropriate recording in the press receptacle of the tool. The press tool specified herein thus prevents, due to its construction, a faulty compression of pipe sections or pipe clamps or clamps due to, for example, time pressure or poor access to the press point and thus contributes to ensuring professional pipe connections.

Die Pressbacken sind vorzugsweise einstückig geformt. Bevorzugt wird Metall, insbesondere vergüteter Stahl als Konstruktionsmaterial des Presswerkzeugs verwendet. Flächen, welche im Zuge der Verpressung mit Druck beaufschlagt werden, sind vorteilhafterweise aus gehärtetem Stahl gebildet. Besonders vorteilhaft sind Pressbacken, welche sich nicht überschneiden und jeweils eine Schwenkachse aufweisen, so dass die Pressbacke bzw. Presshebel mittels von zwei beabstandeten Schwenkachsen in einem Träger, bspw. einer Verbindungslasche, befestigt sind. Die Befestigung soll derart sein, dass die Pressbacken gegenläufig um die Lagerung schwenkbar sind. Hierbei ist es vorteilhaft, einen zusätzlich führenden Walzkörper zwischen den Pressbacken anzuordnen. Alternativerweise ist es denkbar, die Pressbacken über die gleiche Schwenkachse sich kreuzend gekoppelt bereitzustellen.The pressing jaws are preferably formed in one piece. Preference is given to using metal, in particular tempered steel, as the construction material of the pressing tool. Surfaces which are subjected to pressure in the course of pressing are advantageously made of hardened steel. Particularly advantageous are pressing jaws which do not overlap and each have a pivot axis, so that the pressing jaw or pressing lever by means of two spaced pivot axes in a carrier, for example. A connecting strap, are attached. The attachment should be such that the pressing jaws are pivotable in opposite directions about the bearing. Here it is advantageous to arrange an additional leading rolling body between the pressing jaws. Alternatively, it is conceivable to provide the pressing jaws coupled across the same pivoting axis.

Vorzugsweise ist dieses Kontaktteil derart ausgebildet, dass das Kontaktteil die Betätigungsvorrichtung, welche bspw. in Form eines stösselgeführten Walzenpaars auf das Werkzeug wirkt, kontaktiert, bevor die Betätigungsvorrichtung zur Verschwenkung auf die Betätigungsabschnitte wirkt. Durch diese dem Pressschritt zeitlich und räumlich vorgelagerte und insbesondere kontrollierte Kontaktaufnahme des Steuerelements mit der Betätigungsvorrichtung wird sichergestellt, dass die Betätigungsvorrichtung zuverlässig in die vorbestimmte Blockadestellung geführt wird, falls eine Pressbackenlage vorliegt, welche anzeigt, dass der Pressling nicht optimal in der Aufnahme liegt.Preferably, this contact part is designed such that the contact part, the actuating device, which, for example, in the form of a tappet-guided roller pair acts on the tool, contacted before the actuator acts to pivot on the actuating portions. By this the pressing step temporally and spatially upstream and in particular controlled contacting the control with the actuator ensures that the actuator is reliably guided in the predetermined Blockadestellung if a pressing jaw position is present, indicating that the compact is not optimal in the recording.

Als Steuerelement ist eine passive, rein mechanische Vorrichtung bevorzugt. Hierbei weist das Steuerelement vorzugsweise zwei gegeneinander verschiebbare Teile auf. Diese Teile, das Kontaktteil und das Verankerungsteil, sind vorzugsweise derart ausgestaltet, dass ein zwischengeordnetes Federelement, insbesondere in Form einer Druckfeder, die Teile ohne Ausseneinwirkung jeweils in eine Ruheposition auseinanderdrückt, wobei die beiden Teile mit einer Kraft gegen das Federelement aus der Ruheposition über einen Schiebeweg aufeinander zuschiebbar sind. Dieser Schiebeweg ist hierbei so bemessen, dass eines der Teile des Steuerelements und die das Steuerelement zusammendrückende Betätigungsvorrichtung auf einen Anschlag führbar bzw. je nach Stellung der Pressbacken über diesen Punkt hinaus weiterführbar sind, so dass die Betätigungsvorrichtung die Verpressung dann bewirken kann.As a control, a passive, purely mechanical device is preferred. In this case, the control preferably has two mutually displaceable parts. These parts, the contact part and the anchoring part, are preferably configured such that an intermediate spring element, in particular in the form of a compression spring, the parts apart without external action in a rest position, wherein the two parts with a force against the spring element from the rest position via a Sliding way are zuzuschiebbar each other. This sliding path is in this case dimensioned such that one of the parts of the control element and the actuating device compressing the control can be guided to a stop or, depending on the position of the pressing jaws, can be continued beyond this point, so that the actuating device can then effect the pressing.

Um eine möglichst kontrollierte Verpressung unter einfacher Handhabung des Werkzeugs zu ermöglichen, ist es vorteilhaft, wenn ein weiteres Federelement die Pressbacken mit einer Vorspannung in Richtung der Schliessstellung beaufschlagt. Diese Vorspannung ist vorzugsweise derart bemessen, dass die Pressbacken auf den in der Pressaufnahme aufgenommenen Pressling drücken, ohne diesen jedoch bereits nennenswert zu deformieren, bzw. zu verpressen. Durch diese rückstellende Vorspannung werden die Pressbacken ohne Ausseneinwirkung jeweils in eine definierte Stellung überführt. Somit ist sichergestellt, dass die Pressbacken zangenartig mit ihren Wirkabschnitten, also ihren Greifabschnitten, satt am Pressling anliegen und dessen Lage in der Aufnahme durch die momentane Stellung der Pressbacken korrekt abgebildet ist. Die Vorspannung soll hierbei so gewählt sein, dass ein Nutzer des Werkzeugs ohne Mühe mehrfach und ohne übermässige Ermüdung manuell durch reine Körperkraft die Pressbacken zur Freigabe des verpressten Presslings und/oder zur Aufnahme eines weiteren Presslings in die Aufnahmestellung gegenläufig verschwenken kann.In order to enable the most controlled possible compression under simple handling of the tool, it is advantageous if another spring element with the pressing jaws a bias voltage applied in the direction of the closed position. This bias is preferably dimensioned such that the pressing jaws press on the recorded in the press receptacle compact, without, however, this already appreciably deform, or to press. By this restoring bias the pressing jaws are transferred without external action in each case in a defined position. Thus, it is ensured that the pressing jaws pincer-like with their active sections, so their gripping portions, fit snugly against the compact and its position is correctly displayed in the recording by the current position of the pressing jaws. The bias should in this case be chosen so that a user of the tool without difficulty multiple and without excessive fatigue manually by pure body force the press jaws to release the compressed compact and / or to receive another compact in the receiving position can pivot in opposite directions.

Um die genannte Vorspannung zu erzeugen, wird bevorzugt, wenn mindestens ein Federelement im Presswerkzeug, vorzugsweise zwischen den Pressbacken angeordnet ist. Vorteilhafterweise ist das Federelement derart angeordnet, dass die Pressabschnitte mit der genannten Vorspannung beaufschlagt sind, wobei diese Vorspannung die Pressbacken gegen die Pressstellung drückt, derart, dass ein in der Pressaufnahme aufgenommener Pressling durch die Pressabschnitte kontaktiert ist. Die Vorspannung ist hierbei derart gewählt, dass sie alleine nicht ausreicht, den Pressling verpressend zu deformieren. Besonders bevorzugt wird eine elektrische Betätigungsvorrichtung, welche ein mobiles Pressgerät aus dem hierin beschriebenen Presswerkzeug und dieser Betätigungsvorrichtung erlaubt.In order to produce said preload, it is preferred if at least one spring element is arranged in the pressing tool, preferably between the pressing jaws. Advantageously, the spring element is arranged such that the pressing portions are acted upon by said bias, said bias presses the pressing jaws against the pressing position, such that a recorded in the press receptacle compact is contacted by the pressing sections. The bias is in this case chosen so that it alone is not sufficient to compress the compact to compress. Particularly preferred is an electric actuating device which allows a mobile pressing device from the pressing tool and this actuating device described herein.

In einer vorteilhaften Ausbildung weist jede Pressbacke ein Sackloch auf, wobei Öffnungen der Sacklöcher sich vorzugsweise direkt gegenüberliegend angeordnet sind, wenn die Pressbacken in Aufnahmelage sind. Weiter kann ein Federelement, insbesondere eine Spiral- oder teleskopartige Druckfeder, in diesen Sacklöchern angeordnet sein. Dieses Federelement, welches sich jeweils auf einer Tiefe jedes Sacklochs anstehend unter Spannung in Langrichtung der Sacklöcher von einem Sackloch ins gegenüberliegende erstreckt, ist bevorzugt so dimensioniert, dass die Pressbacken ohne Ausseneinwirkung auf das Presswerkzeug in Presslage gehalten sind.In an advantageous embodiment, each pressing jaw has a blind hole, wherein openings of the blind holes are preferably arranged directly opposite one another when the pressing jaws are in the receiving position. Furthermore, a spring element, in particular a spiral or telescopic compression spring, can be arranged in these blind holes. This spring element, which extends in each case at a depth of each blind hole pending under tension in the long direction of the blind holes from a blind hole into the opposite, is preferably dimensioned so that the pressing jaws are held without external action on the pressing tool in the press position.

In einer besonders bevorzugten Weiterbildung sind die Sacklöcher so angeordnet, dass sie mit ihrer jeweiligen Ausrichtung bzw. Langrichtung auf einer Geraden liegen, wenn das Federelement maximal entspannt ist, d.h. wenn die Pressbacken in Presslagen liegen. Dies ist vorteilhaft, um die minimale Federwirkung bei maximaler Entspannung optimal auf die Pressabschnitte zu leiten. Diese Anordnung führt dazu, dass das Federelement in Aufnahmelage quer zur Langrichtung leicht geknickt ist, da die Pressbacken durch Verschwenkung aus der Presslage in die Aufnahmelage geführt werden. Das Federelement ist hierbei so dimensioniert, dass unter Berücksichtigung von dessen Lage bezüglich der Schwenkachsen der Pressbacken die gewünschte Vorspannung erzeugt ist.In a particularly preferred embodiment, the blind holes are arranged so that they lie with their respective orientation or long direction on a straight line when the spring element is maximally relaxed, i. when the pressing jaws are in pressing positions. This is advantageous in order to optimally guide the minimal spring action with maximum relaxation to the pressing sections. This arrangement results in that the spring element is slightly bent in the receiving position transversely to the longitudinal direction, since the pressing jaws are guided by pivoting from the pressing position into the receiving position. The spring element is in this case dimensioned so that, taking into account its position relative to the pivot axes of the pressing jaws, the desired preload is generated.

Befindet sich der Pressling verpressungsgerecht in der Pressaufnahme, so weicht das Kontaktteil bei Druckbeaufschlagung blockadefrei in Betätigungsrichtung zurück und die Betätigungsvorrichtung ist frei, um die Betätigungsabschnitte derart mit Druck zu beaufschlagen, dass der Pressling durch Deformation in den gewünschten verpresst klemmenden Endzustand überführt wird. Dabei wirken die Pressbacken jeweils als zweiarmige Hebel, welche aufgrund ihrer dem Hebelgesetz unterliegenden Längenverhältnisse und der vordefinierten Wirkung der Betätigungsvorrichtung die gewünschte Verpresskraft über die Pressabschnitte bzw. die Greifabschnitte auf den Pressling leiten.If the compact is suitable for compression in the press receptacle, the contact part deviates without blocking in the direction of actuation when the pressure is applied, and the actuating device is free to pressurize the actuating sections in such a way that the compact is converted by deformation into the desired compressed clamping final state. In this case, the press jaws each act as two-armed levers, which guide the desired pressing force on the press sections or the gripping portions on the compact due to their length rule under the lever law and the predefined effect of the actuator.

Hierbei ist es besonders vorteilhaft, wenn mindestens eine, vorzugsweise beide Pressbacken einen Anschlag für das Kontaktteil bereitstellen. Das Kontaktteil und der Anschlag sind jeweils derart ausgebildet, dass das Kontaktteil, falls die Pressbacken eine Lage einnehmen, welche zwischen der Aufnahmelage und der Mindestschliesslage liegt, über die Kontaktfläche des Kontaktteils an diesem Anschlag ansteht und die das Kontaktteil kontaktierende Betätigungsvorrichtung in Betätigungsrichtung blockiert, bevor die Betätigungsvorrichtung auf den mindestens einen Betätigungsabschnitt wirkt. Das Kontaktteil greift also die Betätigungsbewegung der Betätigungsvorrichtung auf und blockiert diese an besagtem Anschlag, falls die Pressbacken eine Lage einnehmen, welche anzeigt, dass die Aufnahme des Presslings noch nicht optimal ist.It is particularly advantageous if at least one, preferably both pressing jaws provide a stop for the contact part. The contact part and the stop are each formed such that the contact part, if the pressing jaws occupy a position which lies between the receiving position and the minimum closing position over the contact surface of the contact part abuts against this stop and blocks the contact part contacting actuator in the direction of actuation before the actuating device acts on the at least one operating section. The contact member thus engages the actuating movement of the actuator and blocks it at said stop, if the pressing jaws take a position indicating that the recording of the compact is not yet optimal.

Der besagte Anschlag ist vorzugsweise in einen oder beide Betätigungsabschnitte als passives Element eingeformt oder derart daran angebracht, dass der Anschlag als querverlaufende Anschlagskante im Lauf des Steuerelements liegt, falls die Betätigungsabschnitte in einer Lage zwischen der Aufnahmelage und der Mindestschliesslage liegen. Weiter ist der Anschlag derart bereitgestellt, dass der Anschlag aus dem Lauf des Steuerelements, insbesondere des Kontaktteils, gehebelt ist, wenn sich die Betätigungsabschnitte in Mindestschliesslage oder näher zur Presslage befinden.The said stop is preferably formed in one or both operating portions as a passive element or attached thereto such that the stop as transverse stop edge in the course of the control is, if the operating portions lie in a position between the receiving position and the minimum closing position. Furthermore, the stop is provided in such a way that the stop is levered out of the barrel of the control element, in particular of the contact part, when the actuating sections are in the minimum closed position or closer to the pressing position.

Ein besonders bevorzugtes Ausführungsbeispiel ist ein Presswerkzeug, welches weiter eine Verbindungslasche als Lagerung umfasst, in welcher die Pressbacken an Schwenkachsen gelagert sind. Die Verbindungslasche ist insbesondere plattenartig geformt, derart, dass sie vorzugsweise einstückig die Pressbacken seitlich teilweise umgibt, insbesondere die Schwenkachsen aufnimmt und als Tragelement dient. Die Verbindungslasche umfasst vorzugsweise zwei plattenförmige Laschenelemente, welche beidseitig der Pressbacken angeordnet sind.A particularly preferred embodiment is a pressing tool, which further comprises a connecting plate as a bearing, in which the pressing jaws are mounted on pivot axes. The connecting strap is in particular plate-shaped, such that it preferably partially integrally surrounds the pressing jaws laterally, in particular accommodates the pivot axes and serves as a supporting element. The connecting plate preferably comprises two plate-shaped tab elements, which are arranged on both sides of the pressing jaws.

In einer vorteilhaften Ausgestaltung des Presswerkzeugs bilden die Betätigungsabschnitte eine Betätigungsausnehmung zum Eingriff der Betätigungsvorrichtung in der Betätigungsrichtung. Das Steuerelement ist in dieser Betätigungsausnehmung angeordnet. Die Betätigungsausnehmung erweitert sich über Schrägflächen vorzugsweise entgegen der Betätigungsrichtung konisch derart nach aussen, dass die Betätigungsvorrichtung bei der Betätigung des Presswerkszeugs auf diese Schrägflächen drückend die Verpressung bewirkt. Diese Schrägflächen bieten dann eine Kurvenbahn bzw. eine Einlaufkurve für die Walzen einer Betätigungsvorrichtung.In an advantageous embodiment of the pressing tool, the actuating portions form an actuating recess for engagement of the actuating device in the actuating direction. The control is arranged in this actuating recess. The actuating recess widens out obliquely preferably opposite to the actuating direction conically outwards in such a way that the actuating device on pressing the pressing tool on these inclined surfaces pushing the compression causes. These inclined surfaces then provide a curved path or an inlet curve for the rollers of an actuator.

Vorzugsweise ist das Kontaktteil derart geformt und angebracht, dass es durch das Walzenpaar in Betätigungsrichtung gedrückt an der Kurvenbahn vorbeiläuft. Das Kontaktteil berührt die Kurvenbahn also vorzugsweise nicht. Die Kurvenbahn wird demnach nur durch das Walzenpaar mit Druck beaufschlagt, wobei das Walzenpaar die Betätigungsabschnitte fortzu auseinanderdrückt, so dass das Kontaktteil zwischen den Kurvenbahnen berührungsfrei gegen die Tiefe der Betätigungsausnehmung gedrückt wird.Preferably, the contact part is shaped and mounted so that it passes by the pair of rollers pressed in the direction of actuation on the curved path. The contact part thus preferably does not touch the curved path. Accordingly, the cam track is subjected to pressure only by the pair of rollers, the pair of rollers continuing to push apart the actuation sections so that the contact part between the cam tracks is pressed against the depth of the actuation recess without contact.

Vorzugsweise ist der Anschlag durch am jeweiligen Betätigungsabschnitt angebrachte, quer verlaufende Anschlagkante am proximal bezüglich der Schwenkachsen bzw. der Pressaufnahme liegenden Endabschnitt der Schrägflächen bereitgestellt. Es ist also vorteilhaft, wenn beide Betätigungsabschnitte einen solchen Anschlag aufweisen.Preferably, the stop is provided by attached to the respective operating portion, transverse stop edge at the proximal with respect to the pivot axes or the press receiving end portion of the inclined surfaces. So it is advantageous if both operating sections have such a stop.

Das Steuerelement ist vorzugsweise derart ausgestaltet, dass es weiter das Verankerungselement aufweist, welcher fest in der Betätigungsausnehmung, vorzugsweise an der Verbindungslasche gelagert ist. Das Kontaktteil ist vorzugsweise am Verankerungsteil oder an der Verbindungslasche in der Betätigungsrichtung relativ zum Verankerungsteil verschieblich in der Betätigungsausnehmung gelagert.The control element is preferably designed such that it further has the anchoring element, which is fixedly mounted in the actuating recess, preferably on the connecting tab. The contact part is preferably mounted on the anchoring part or on the connecting plate in the actuating direction relative to the anchoring part displaceable in the actuating recess.

Es wird also bevorzugt, dass die Pressbacken parallelverlaufend an jeweils einer eigenen Schwenkachse gelagert sind, wobei die beiden Pressbacken jeweils einen vorzugsweise nockenartigen Anschlag für das Steuerelement aufweisen. Die beiden Schwenkachsen sind vorzugsweise derart quer zur Betätigungsrichtung beabstandet in der Verbindungslasche angeordnet, dass die besagte, in der Betätigungsrichtung verschieblich gelagerte Kontaktfläche des Kontaktteils in einer Querrichtung zur Betätigungsrichtung zwischen den Schwenkachsen liegt und die Neigung der Anschläge derart geneigt zur besagten Querrichtung gewählt ist, dass die an der Kontaktfläche über ihre Anschläge in Blockadelage anstehenden Pressbacken über die Betätigungsvorrichtung an der Kontaktfläche gleitend aus der Blockadelage in die Aufnahmelage überführbar sind. Durch diese Anordnung der Kontaktbereiche zwischen Pressbacken und Kontaktteil werden also Drehmomente auf die Pressbacken in Blockadestellung ausgeübt, welche die Pressbacken in die Aufnahmelage rückführen, womit der Pressling nach missglückten Pressversuch dann wieder freigegeben ist.It is therefore preferred that the pressing jaws are mounted parallel to each at its own pivot axis, wherein the two pressing jaws each have a preferably cam-like stop for the control. The two pivot axes are preferably arranged transversely to the actuating direction spaced in the connecting plate, that the said, displaceably mounted in the actuating direction contact surface of the contact part in a transverse direction to the actuating direction between the pivot axes and the inclination of the attacks is chosen so inclined to said transverse direction that the pressing jaws which are present at the contact surface via their stops in a blockage layer can be moved in a sliding manner out of the blockage position into the receiving position via the actuating device on the contact surface. As a result of this arrangement of the contact regions between pressing jaws and contact part, torques are thus exerted on the pressing jaws in the blocking position, which return the pressing jaws to the receiving position, with which the compact is then released again after a failed pressing test.

Es ist somit ein Aspekt einer Weiterbildung der vorliegenden Erfindung, dass nicht nur die falsche Verpressung durch nicht verpressgerechte Lage des Presslings im Pressmaul des Presswerkzeugs verhindert wird, sondern dass die Pressbacken den Pressling bei falscher Presslingslage bzw. bei Blockadestellung der Pressbacken wieder freigeben, indem die Pressbacken durch die Pressvornchtung über die vorgenannten Drehmomente in die Aufnahmestellung rückgeführt werden.It is thus an aspect of a development of the present invention, that not only the wrong pressing is prevented by non-press appropriate position of the compact in the jaw of the pressing tool, but that the pressing jaws release the compact in case of false compact layer or blockage position of the pressing jaws again by the Press jaws are returned by the Pressvornchtung on the aforementioned torques in the receiving position.

Hierbei wird bevorzugt, dass das Kontaktteil eine im Wesentlichen dreiecksförmig in Betätigungsrichtung zulaufende Querschnittsform hat. Besonders bevorzugt wird, wenn das Verankerungsteil in der Tiefe der Betätigungsausnehmung befestigt ist, d.h. im Bereich des Endes der Betätigungsausnehmung in Betätigungsrichtung. Idealerweise ist dann das Kontaktteil gegen diese Tiefe in Betätigungsrichtung teleskopierbar bzw. bewegbar.In this case, it is preferred that the contact part has a substantially triangular shape in the direction of actuation tapered cross-sectional shape. Particularly preferred is when the anchoring part is fixed in the depth of the actuating recess, ie in the area the end of the actuating recess in the actuating direction. Ideally, then the contact part against this depth in the direction of actuation telescopic or movable.

In einer Weiterbildung ist ein Rückstellelement zwischen Verankerungsteil und Kontaktteil angeordnet, wobei das Steuerelement vorzugsweise ein Einstellelement zur Einstellung einer Vorspannung des Rückstellelements aufweist. Es wird bevorzugt, dass das Verankerungsteil und das Kontaktteil derart hülsenförmig ausgebildet sind, dass ein das Rückstellelement Federelement, insbesondere eine Spiralfeder oder Druckfeder sich von einem Teil des Steuerelements zum anderen erstreckt und eine Vorspannung zur Rückstellung des Kontaktteils in Ausgangsposition bereitstellt.In a development, a restoring element between the anchoring part and the contact part is arranged, wherein the control element preferably has an adjusting element for setting a pretensioning of the restoring element. It is preferred that the anchoring part and the contact part are formed sleeve-shaped, that a restoring element spring element, in particular a coil spring or compression spring extends from one part of the control to the other and provides a bias for returning the contact part in the starting position.

Es wird weiter bevorzugt, dass das Presswerkzeug eine Verdrehsicherung für das Kontaktteil aufweist, wobei diese Verdrehsicherung eine Drehbewegung des Kontaktteils um eine Achse parallel zur Betätigungsrichtung unterbindet. Diese Verdrehsicherung ist vorzugsweise durch eine in Betätigungsrichtung gerichtete Nuten-Kamm-Führung zwischen Kontaktteil und Verbindungslasche oder Kontaktteil und Verankerungsteil bereitgestellt.It is further preferred that the pressing tool has an anti-rotation device for the contact part, wherein this anti-rotation device prevents rotational movement of the contact part about an axis parallel to the actuating direction. This rotation is preferably provided by a directed in the direction of actuation grooves-comb-guide between the contact part and connecting strap or contact part and anchoring part.

Die Pressaufnahme des hierin beschriebenen Presswerkzeugs ist als Pressmaul des Werkzeugs zu verstehen und ist nach einem ersten Ausführungsbeispiel derart geformt, dass Rohrklemmen mit Ohrspaltlaschen verpressbar sind und nach einem zweiten Ausführungsbeispiel derart geformt, dass Rohrabschnitte verpressbar sind.The press receptacle of the pressing tool described herein is to be understood as the press jaw of the tool and is formed according to a first embodiment such that pipe clamps are compressible with ear gap straps and shaped according to a second embodiment such that pipe sections are compressible.

Es ist eine weitere Aufgabe der vorliegenden Erfindung, eine Pressvorrichtung mit einem genannten Presswerkzeug und einer Betätigungsvorrichtung bereitzustellen. Besonders bevorzugt wird hierbei eine elektrisch betriebene Betätigungsvorrichtung mit Walzen.It is a further object of the present invention to provide a pressing device with a said pressing tool and an actuating device. In this case, an electrically operated actuating device with rollers is particularly preferred.

Mit Vorteil sind die Walzen ausgestaltet, um auf das Kontaktteil des Steuerelements zu drücken und wobei die Walzen weiter ausgestaltet sind, auf die Betätigungsabschnitte zur Verschwenkung der Pressabschnitte zu wirken, wenn das Kontaktteil in Betätigungsrichtung bis über den Anschlag in die Tiefe der Betätigungsausnehmung eingedrückt ist.Advantageously, the rollers are configured to press on the contact part of the control and wherein the rollers are further configured to act on the actuating portions for pivoting the pressing portions, when the contact part is pressed in the actuating direction to over the stop in the depth of the Betätigungsausnehmung.

Vorteilhafterweise wird das hierin beschriebene Presswerkszeug oder die genannte Pressvorrichtung zur Herstellung einer Rohrverbindung verwendet.Advantageously, the press tool or press apparatus described herein is used to make a pipe joint.

KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Bevorzugte Ausführungsformen der Erfindung werden im Folgenden anhand der Zeichnungen beschrieben, die lediglich zur Erläuterung dienen und nicht einschränkend auszulegen sind. In den Zeichnungen zeigen:

Fig. 1
eine perspektivische Ansicht einer ersten bevorzugten Ausführungsform eines erfindungsgemässen Presswerkszeugs mit einem Walzenpaar und einer Rohrklemme;
Fig. 2
eine perspektivische Ansicht einer weiteren bevorzugten Ausführungsform des erfindungsgemässen Presswerkzeugs mit einem rohrartigen Pressling;
Fig. 3
einen Längsschnitt durch das Presswerkzeug gemäss Fig. 1, wobei das Presswerkzeug ein Steuerelement aufweist und wobei Pressbacken des Werkzeugs in Aufnahmelage liegen;
Fig. 4
einen Längsschnitt durch das Presswerkzeug gemäss Fig. 1, wobei die Pressbacken in einer Zwischenlage zwischen der Aufnahmelage und einer Mindestschliesslage liegen, wobei das Walzenpaar das Steuerelement kontaktiert und das Steuerelement am Anschlag ansteht und das Walzenpaar blockiert;
Fig. 5
einen Längsschnitt durch das Presswerkzeug gemäss Fig. 1, wobei die Pressbacken in der Mindestschliesslage liegen und das Walzenpaar das Steuerelement kontaktiert;
Fig. 6
einen Längsschnitt durch das Presswerkzeug gemäss Fig. 4, wobei die Pressbacken in der Mindestschliesslage liegen und das Walzenpaar das Steuerelement bis über den Anschlag eingedrückt hat und Schrägflächen der Pressbacken kontaktiert; und
Fig. 7
einen Längsschnitt durch das Presswerkzeug gemäss Fig. 6, wobei die Pressbacken in der Presslage liegen und das Walzenpaar das Steuerelement bis über den Anschlag maximal eingedrückt hat und über die Schrägflächen der Pressbacken die Verpressung bewirkt hat.
Fig. 8
in einer perspektivischen Ansicht eine zweite bevorzugte Ausführungsform des erfindungsgemässen Presswerkzeugs mit einem Steuerelement;
Fig. 9
eine Seitenansicht des Presswerkzeugs gemäss Fig. 8;
Fig. 10
einen Querschnitt C-C durch das Steuerelement gemäss Fig. 9; und
Fig. 11
einen Längsschnitt D-D durch das Steuerelement gemäss Fig. 10.
Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:
Fig. 1
a perspective view of a first preferred embodiment of a novel pressing tool with a pair of rollers and a pipe clamp;
Fig. 2
a perspective view of another preferred embodiment of the inventive pressing tool with a tubular compact;
Fig. 3
a longitudinal section through the pressing tool according to Fig. 1 wherein the pressing tool has a control element and wherein pressing dies of the tool lie in the receiving position;
Fig. 4
a longitudinal section through the pressing tool according to Fig. 1 wherein the pressing jaws lie in an intermediate position between the receiving position and a minimum closing position, the pair of rollers contacting the control element and the control element abutting against the stop and blocking the pair of rollers;
Fig. 5
a longitudinal section through the pressing tool according to Fig. 1 wherein the pressing jaws are in the minimum closing position and the pair of rollers contacts the control element;
Fig. 6
a longitudinal section through the pressing tool according to Fig. 4 , wherein the pressing jaws are in the minimum closing position and the pair of rollers has pressed the control over the stop and contacts inclined surfaces of the pressing jaws; and
Fig. 7
a longitudinal section through the pressing tool according to Fig. 6 , wherein the pressing jaws are in the pressing position and the pair of rollers are the control element until it has pressed in excess of the stop and has caused the pressing on the inclined surfaces of the pressing jaws.
Fig. 8
in a perspective view of a second preferred embodiment of the inventive pressing tool with a control element;
Fig. 9
a side view of the pressing tool according to Fig. 8 ;
Fig. 10
a cross section CC through the control according to Fig. 9 ; and
Fig. 11
a longitudinal section DD through the control according to Fig. 10 ,

BESCHREIBUNG BEVORZUGTER AUSFÜHRUNGSFORMENDESCRIPTION OF PREFERRED EMBODIMENTS

Figur 1 zeigt in einer perspektivischen Ansicht eine bevorzugte erste Ausführungsform des erfmdungsgemässen Presswerkzeugs 2 mit einem Walzenpaar 72 einer vorzugsweise mobilen und elektrisch betriebenen Betätigungsvorrichtung 70. FIG. 1 shows a perspective view of a preferred first embodiment of the inventive compression tool 2 with a roller pair 72 of a preferably mobile and electrically operated actuator 70th

Das Presswerkzeug 2 umfasst eine erste Pressbacke 10 und eine zweite Pressbacke 20 und bildet mit dem Walzenpaar 72 bzw. der Betätigungsvorrichtung die Pressvorrichtung 1. Die beiden länglichen Pressbacken 10, 20 sind parallel nebeneinander und somit symmetrisch zueinander angeordnet und jeweils über eine Schwenkachse 51, 52 in einer Verbindungslasche 50 zangenartig verschwenkbar gelagert. Die erste Pressbacke 10 weist einen ersten Pressabschnitt 12 auf und die zweite Pressbacke 20 weist einen zweiten Pressabschnitt 22 auf. Die beiden Pressabschnitte 12, 22 sind derart geformt, dass sie eine Pressaufnahme 30 bilden, welche jeweils distal durch einen Greifabschnitt 121, 221 (s. Fig. 3) begrenzt ist. Links in Figur 1 ist eine Rohrklemme 80 mit einer Ohrspaltlasche dargestellt. Die Ohrspaltlasche der Rohrklemme 80 greift in die Pressaufnahme 30 ein und soll verpresst werden.The pressing tool 2 comprises a first pressing jaw 10 and a second pressing jaw 20 and forms with the pair of rollers 72 and the actuating device the pressing device 1. The two elongated pressing jaws 10, 20 are arranged parallel to one another and thus symmetrical to one another and in each case via a pivot axis 51, 52 stored in a connecting plate 50 pincer-like pivoting. The first pressing jaw 10 has a first pressing section 12 and the second pressing jaw 20 has a second pressing section 22. The two pressing sections 12, 22 are shaped in such a way that they form a press receptacle 30, which are each distally guided by a gripping section 121, 221 (see FIG. Fig. 3 ) is limited. Left in FIG. 1 a pipe clamp 80 is shown with an ear gap tab. The ear gap tab of the tube clamp 80 engages the press receptacle 30 and is to be pressed.

Figur 2 zeigt in einer abermaligen perspektivischen Ansicht eine zweite Ausführungsform des erfmdungsgemässen Presswerkzeugs 2, wobei in der zweiten Ausführungsform gemäss Figur 2 die Pressaufnahme 30 derart geformt ist, dass als Pressling Rohrabschnitte 82 vom Presswerkzeug 2 aufnehmbar und verpressbar sind. Die Pressaufnahme 30 soll also allgemein dem Pressling angepasst ausgestaltet sein. FIG. 2 shows in a second perspective view, a second embodiment of the inventive compression tool 2, wherein in the second embodiment according to FIG. 2 the press receptacle 30 is shaped such that pipe sections 82 can be received and pressed by the pressing tool 2 as a compact. The press receptacle 30 should therefore be designed generally adapted to the compact.

Die erste und die zweite Ausführungsform gemäss den Figuren 1, 2 umfassen jeweils weiter ein Steuerelement 40, welches in einer Betätigungsausnehmung 32 angeordnet ist, welche durch die Pressbacken 10, 20 gegenüberliegend der Pressaufnahme 30 gebildet ist. Das Steuerelement 40 kontaktiert das Walzenpaar 72, ehe das Walzenpaar 72 die Verpresskraft bereitstellend auf die Betätigungsabschnitte 14, 24 wirkt, und führt das Walzenpaar 72 in die Betätigungsausnehmung 32, je nach Lage der Betätigungsabschnitte 14, 24, entweder auf einen blockierenden Nocken bzw. Anschlag 17, 27 oder an diesem Anschlag 17, 27 vorbei in eine Tiefe der Betätigungsausnehmung 32.The first and second embodiments according to the FIGS. 1, 2 each further comprise a control element 40, which is arranged in an actuating recess 32, which is formed by the pressing jaws 10, 20 opposite the press receptacle 30. The control member 40 contacts the pair of rollers 72 before the pair of rollers 72, the pressing force acting on the actuating portions 14, 24 acts, and leads the pair of rollers 72 in the Betätigungsausnehmung 32, depending on the position of the actuating portions 14, 24, either on a blocking cam or stop 17, 27 or on this stop 17, 27 over into a depth of the Betätigungsausnehmung 32nd

Anhand der Längsschnitte der Figuren 3 bis 7 wird nun das Presswerkzeug 2 und dessen Funktionsweise genauer beschrieben. Figur 3 zeigt das Presswerkzeug 2 in Aufnahmeposition, ohne betätigungsseitigen Walzenkontakt. Figur 4 zeigt das Presswerkzeug 2 mit Pressbacken 10, 20 in einer Lage zwischen der Aufnahmelage und einer Mindestschliesslage mit entsprechendem Walzenkontakt, wobei ein Walzenpaar 72 über das Steuerelement 40 aufgrund der Lage der Betätigungsabschnitte 14, 24 in Betätigungsrichtung R blockiert ist. Figur 5 zeigt die Situation gemäss Figur 4, wobei die Pressbacken 10, 20 in verpressgerechter, die Ohrspaltlasche der Rohrklemme 80 übergreifender Presslage liegen und das Walzenpaar 72 in Betätigungsrichtung R frei ist. Figur 6 zeigt die Situation gemäss Figur 5, wobei das Steuerelement 40 durch das Walzenpaar 72 aufgrund der Pressbackenlage frei beweglich bereits über die Anschläge 17, 27 in die Betätigungsausnehmung 32 eingedrückt ist, derart weit, dass das Walzenpaar 72 Kurvenbahnen bzw. Einlaufkurven bildende Schrägflächen 15, 25 der Betätigungsabschnitte 14, 24 zur Verpressung kontaktiert. Figur 7 zeigt schliesslich, wie die Schrägflächen 15,25 am in Betätigungsrichtung R fortgeschrittenen, starr angebrachten Walzenpaar 72 vorbeigerollen und wie die Betätigungsabschnitte 14, 24 auseinandergepresst sind, so dass die Pressabschnitte 12, 22 den Pressling vorbestimmt verpresst haben.Based on the longitudinal sections of FIGS. 3 to 7 Now, the pressing tool 2 and its operation will be described in more detail. FIG. 3 shows the pressing tool 2 in the receiving position, without actuation-side roller contact. FIG. 4 shows the pressing tool 2 with pressing jaws 10, 20 in a position between the receiving position and a minimum closing position with corresponding roller contact, wherein a pair of rollers 72 is blocked by the control element 40 due to the position of the actuating portions 14, 24 in the direction of actuation R. FIG. 5 shows the situation according to FIG. 4 , wherein the pressing jaws 10, 20 are in press-fitting, the ear gap clip of the tube clamp 80 cross-pressing position and the pair of rollers 72 in the direction of actuation R is free. FIG. 6 shows the situation according to FIG. 5 , wherein the control member 40 is pressed by the pair of rollers 72 due to the pressing jaw position freely movable already on the stops 17, 27 in the Betätigungsausnehmung 32, so far that the roller pair 72 curved paths or inlet curves forming inclined surfaces 15, 25 of the actuating sections 14, 24 for Pressing contacted. FIG. 7 shows, finally, how the inclined surfaces 15,25 on the direction of actuation R advanced rigidly mounted pair of rollers roll past 72 and how the actuating portions 14, 24 are pressed apart, so that the pressing sections 12, 22 have pressed the compact predestined.

Weiter ist in Figuren 1 und 2 erkennbar, dass durch die Verbindungslasche 50, im Bereich der Verankerung des Steuerelements 40, ein normal zur Verbindungslasche 50 verlaufendes Durchgangsloch 53 mit einem Durchmesser von etwa 5 bis 15 Millimeter bereitgestellt ist. Dieses Durchgangsloch 53 dient zur Befestigung des Presswerkzeugs 2 mittels eines das Durchgangsloch 53 durchgreifenden Bolzens (nicht dargestellt).Next is in Figures 1 and 2 It can be seen that through the connecting strap 50, in the region of the anchoring of the control element 40, there is provided a through hole 53 with a diameter of approximately 5 to 15 millimeters, which runs normal to the connecting strap 50. This through-hole 53 serves for fastening the pressing tool 2 by means of a bolt (not shown) which extends through the through-hole 53.

Figur 3 zeigt einen Längsschnitt durch das Presswerkzeug 2 und das Walzenpaar 72. Im oberen Bereich der Figur 3 ist die erste, länglich geformte Pressbacke 10 erkennbar. Die erste Pressbacke 10 ist einstückig und als zweiarmiger Hebel mit in Lasche 50 verankerter Schwenkachse 51 ausgebildet. Die Verbindungslasche 50 besteht aus zwei Platten 50, welche auf beiden Seiten der Pressbacken 10, 20 angeordnet sind. In Figur 3 rechts der Schwenkachse 51 ist der Pressabschnitt 12 erkennbar, links der ersten Schwenkachse 51 der Betätigungsabschnitt 14. Die Schwenkachse 51 ist vertikal mittig in der Pressbacke 10 angeordnet. Der Pressabschnitt 12 ist in seiner Längserstreckung etwa halb so lang wie der Betätigungsabschnitt 14, was ideale Hebelverhältnisse aufgrund der herrschenden Kräfte bereitstellt. Die erste Pressbacke 10 ist in der Verbindungslasche 50 über die erste Schwenkachse 51 schwenkbar festgestellt. FIG. 3 shows a longitudinal section through the pressing tool 2 and the pair of rollers 72. In the upper part of FIG. 3 is the first, elongated pressing jaw 10 recognizable. The first pressing jaw 10 is formed in one piece and as a two-armed lever with anchored in the bracket 50 pivot axis 51. The connecting plate 50 consists of two plates 50, which are arranged on both sides of the pressing jaws 10, 20. In FIG. 3 right of the pivot axis 51 of the pressing portion 12 can be seen, left of the first pivot axis 51 of the actuating portion 14. The pivot axis 51 is vertically centered in the pressing jaw 10. The pressing portion 12 is in its longitudinal extension about half as long as the actuating portion 14, which provides ideal leverage ratios due to the prevailing forces. The first pressing jaw 10 is pivotally fixed in the connecting plate 50 via the first pivot axis 51.

Quer zu deren Längserstreckung liegt der ersten Pressbacke 10 die zweite, im Wesentlichen baugleiche Pressbacke 20 spiegelverkehrt gegenüber. Auch die zweite Pressbacke 20 ist in derselben Verbindungslasche 50 über die zweite Schwenkachse 52 festgestellt. Zwischen den Pressbacken 10, 20 ist ein Walzkörper 60 angeordnet (s. Fig. 4). Zur Aufnahme des Walzkörpers 60 sind im Bereich einer Verbindungslinie zwischen den beiden Schwenkachsen 51, 52 entsprechende Ausnehmungen in den Pressbacken 10, 20 angeordnet. Die gegeneinander schwenkbaren Pressabschnitte 12, 22 weisen im pressseitigen Endabschnitt jeweils eine Pressausnehmung 120, 220 auf. Diese Pressausnehmung 120, 220 bilden die Pressaufnahme 30. Proximal bezüglich der Schwenkachse 51, 52 schliesst sich an die Pressausnehmung 120, 220 jeweils ein flacher Pressanschlag 13, 23 an. Die Pressabschnitte 12, 22 sind nun derart geformt, dass in Pressstellung bzw. -lage der erste Pressanschlag 13 und der zweite Pressanschlag 23 aneinander anstehen und die Pressbewegung begrenzen. Distal bezüglich der Schwenkachse 51, 52 sind die Pressausnehmung 120, 220 begrenzend die Greifabschnitte 121, 221 angebracht, derart, dass die Pressabschnitte 12, 22 einen im Wesentlichen C-förmigen Querschnitt zwischen den Pressanschlägen 13, 23 und den Greifabschnitten 121, 221 bilden. Die Länge der Greifabschnitte 121, 221 ist in Querrichtung derart bemessen, dass die Greifabschnitte 121, 221 in Presslage (siehe Figur 7) voneinander um im Wesentlichen die doppelten Materialstärke der Rohrschelle bzw. deren Ohrspaltlasche beanstandet sind, während die Pressanschläge 13, 23 aneinander anstehen.Transverse to the longitudinal extent of the first pressing jaw 10, the second, substantially identical pressing jaw 20 is mirror-inverted. Also, the second pressing jaw 20 is detected in the same connecting plate 50 via the second pivot axis 52. Between the pressing jaws 10, 20, a rolling body 60 is arranged (s. Fig. 4 ). For receiving the rolling body 60 corresponding recesses in the pressing jaws 10, 20 are arranged in the region of a connecting line between the two pivot axes 51, 52. The mutually pivotable pressing sections 12, 22 each have a press recess 120, 220 in the press-side end section. This press recess 120, 220 form the press receptacle 30. Proximally with respect to the pivot axis 51, 52, in each case a flat press stop 13, 23 adjoins the press recess 120, 220. The pressing sections 12, 22 are now shaped such that in the pressing position or position of the first press stop 13 and the second press stop 23 abut each other and limit the pressing movement. Distal with respect to the pivot axis 51, 52, the press recess 120, 220 are delimiting the gripping sections 121, 221, such that the press sections 12, 22 form a substantially C-shaped cross section between the press stops 13, 23 and the gripping sections 121, 221. The length of the gripping sections 121, 221 is dimensioned in the transverse direction in such a way that the gripping sections 121, 221 are pressed together (see FIG FIG. 7 ) are spaced from one another by substantially twice the material thickness of the pipe clamp or its ear gap strap, while the press stops 13, 23 abut each other.

Im proximalen Abschnitt bezüglich der Schwenkachsen 51, 52 weisen die Betätigungsabschnitte 14, 24 jeweils ein Sackloch 18, 28 auf. Die Öffnungen der Sacklöcher 18, 28 liegen sich in Aufnahmestellung der Pressbacken 10, 20 gemäss Figur 3 direkt gegenüber. Die Sacklöcher 18, 28 laufen hierbei von ihrer Öffnung gegen ihre Tiefe gewinkelt von jeweiligen Pressabschnitten 12, 22 weg, derart, dass die Sacklöcher 18, 28 bei in Presslage liegenden Pressbacken 10, 20 (s. Figur 7) einander geradlinig gegenüberliegen. In diese Sacklöcher 18, 28 ist ein Federelement 35 in Form einer Druckfeder eingesetzt, welches die Pressbacken 10, 20 jeweils gegen die Presslage drückt.In the proximal section with respect to the pivot axes 51, 52, the actuating sections 14, 24 each have a blind hole 18, 28. The openings of the blind holes 18, 28 are in the receiving position of the pressing jaws 10, 20 according to FIG. 3 directly opposite. The blind holes 18, 28 run from their opening at an angle to their depths of respective pressing sections 12, 22 away, such that the blind holes 18, 28 in press-lying pressing jaws 10, 20 (s. FIG. 7 ) face each other in a straight line. In these blind holes 18, 28 a spring element 35 is inserted in the form of a compression spring which presses the pressing jaws 10, 20 respectively against the pressing position.

Die Betätigungsabschnitte 14, 24 sind derart geformt, dass die betätigungsseitig offene Betätigungsausnehmung 32 gebildet ist. Die Betätigungsausnehmung 32 verläuft in der Betätigungsrichtung R (von links nach rechts in Figur 3) verjüngend, derart, dass jeder Betätigungsabschnitt 14, 24 eine winklig zur Betätigungsrichtung R stehende und eine Kurvenbahn für das Walzenpaar 72 zur Verfügung stellende Schrägfläche 15, 25 bereitstellt. Am proximal bezüglich der Schwenkachsen 51, 52 liegenden Endabschnitt der Schrägflächen 15, 25 weist sowohl der erste Betätigungsabschnitt 14 einen ersten Anschlag 17 in Form einer quer zur Betätigungsrichtung R verlaufenden Anschlagskante als auch der zweite Betätigungsabschnitt 24 einen Anschlag 27 in Form einer solchen Anschlagskante auf. Die Anschläge 17, 27 sind jeweils so in die Betätigungsabschnitte 14, 24 eingeformt, dass sie in jeder Stellung der Pressbacken 10, 20 zwischen der Aufnahmestellung und der Pressstellung jeweils voneinander beabstandet sind, so dass das Steuerelement 40 zwischen ihnen hindurch nach aussen reichen kann. Die Betätigungsausnehmung 32 setzt sich gegen ihre Tiefe hinter den Anschlägen 17, 27 in Betätigungsrichtung R weiter fort und verbreitert sich gegen die Schwenkachsen 51, 52 hin, um eine Aufnahmekammer für das Steuerelement 40 bzw. Teile des Steuerelements 40 zu bilden.The actuating portions 14, 24 are shaped such that the actuating side open actuating recess 32 is formed. The Betätigungsausnehmung 32 extends in the direction of actuation R (from left to right in FIG. 3 ), such that each actuating section 14, 24 provides an inclined surface 15, 25 at an angle to the direction of actuation R and providing a curved path for the pair of rollers 72. At the proximal with respect to the pivot axes 51, 52 lying end portion of the inclined surfaces 15, 25, both the first actuating portion 14 has a first stop 17 in the form of a transverse to the direction of actuation R stop edge and the second operating portion 24 a stop 27 in the form of such a stop edge. The stops 17, 27 are each formed in the actuating portions 14, 24, that they are each spaced apart in each position of the pressing jaws 10, 20 between the receiving position and the pressing position, so that the control element 40 can extend between them to the outside. The Betätigungsausnehmung 32 continues against its depth behind the stops 17, 27 in the direction of actuation R on and widens against the pivot axes 51, 52 out to form a receiving chamber for the control element 40 or parts of the control element 40.

Das Steuerelement 40 umfasst ein Verankerungsteil 44, welches in der Tiefe der Betätigungsausnehmung 32 fest verankert ist. Das Verankerungsteil 44 ist hierbei an der beidseitig angebrachten Verbindungslasche 50 festgestellt. Das Verankerungsteil 44 erstreckt sich mit einem in der ersten Ausführungsform im Querschnitt kreisrund ausgestalteten Teleskoparm 440 entgegen der Betätigungsrichtung R aus der Tiefe der Betätigungsausnehmung 32 bis über die Anschläge 17, 27, wobei auf freien Endabschnitt des Teleskoparms 440 ein teleskopisch auf dem Teleskoparm 440 verschieblich gelagertes Kontaktteil 42 des Steuerelements 40 aufgesteckt ist. Der Teleskoparm 440 greift in eine Teleskopausnehmung 420 des Kontaktteils 42 ein. Der Teleskoparm 440 des Verankerungsteils 44 weist an seinem freien Ende eine Verdickung 45 auf, welche in die Teleskopausnehmung 420 des Kontaktteils 42 eingeführt ist. Hierbei übergreift das Kontaktteil 42 mit einem sich verengenden Endabschnitt 47 die Verdickung 45 des Teleskoparms 44, womit Kontaktteil 42 und Verankerungsteil 44 ineinander greifen und einen durch Endabschnitt 47 und Verdickung 45 bereitgestellten Endanschlag aufweisen, in welchen sie ein Rückstellelement 46 drückt. Dieser Endanschlag definiert eine maximale Ausfahrposition des Kontaktteils 42 entgegen der R-Richtung und relativ zum Verankerungsteil 44. In der maximalen Ausfahrposition, auch Ruheposition des Kontaktteils 42 genannt, sind also Kontaktteil 42 und Verankerungsteil 44 maximal entfernt.The control element 40 comprises an anchoring part 44, which is firmly anchored in the depth of the actuating recess 32. The anchoring part 44 is determined here on the connection tab 50 attached on both sides. The anchoring part 44 extends with a in the first embodiment in cross-section circularly configured telescopic arm 440 against the actuation direction R from the depth of Betätigungsausnehmung 32 through the stops 17, 27, wherein the free end portion of the telescopic arm 440 a telescopically mounted on the telescopic arm 440 slidably mounted contact part 42 of the control 40 is attached. The telescopic arm 440 engages in a telescopic recess 420 of the contact part 42. The telescopic arm 440 of the anchoring part 44 has at its free end a thickening 45, which is inserted into the telescopic recess 420 of the contact part 42. In this case, the contact part 42 engages with a narrowing end portion 47, the thickening 45 of the telescopic arm 44, whereby the contact part 42 and anchoring part 44 engage each other and have an end portion 47 and thickening 45 provided end stop, in which it pushes a return element 46. This end stop defines a maximum extension position of the contact part 42 against the R direction and relative to the anchoring part 44. In the maximum extended position, also called rest position of the contact part 42 so contact part 42 and anchoring member 44 are removed.

Das Kontaktteil 42 ist hierbei von im Wesentlichen dreiecksförmig auslandender Querschnittsgestalt, welche die Betätigungsausnehmung 32 im Wesentlichen ausfüllt (s. Figs. 1 bis 6) und weist an seinem proximalen Ende bezüglich der Schwenkachsen 51, 52 eine quer zur Betätigungsrichtung R verlaufende Kontaktfläche 43 zum Anschlag auf den nockenartigen Anschlägen 17, 27 der Pressbacken 10, 20 auf. Das Kontaktteil 42 weist durch die dreiecksförmig Verbreiterung gegen das Walzenpaar 72 eine genügend grosse Kontaktfläche zum Kontakt mit dem Walzenpaar 72 auf. Das Kontaktteil 42 ist hierbei derart auf bzw. in dem Verankerungsteil 44 gelagert, dass das Kontaktteil 42 in Ruhelage vor den Anschlägen 17, 27 liegt (siehe Figur 3). Zwischen dem Verankerungsteil 44 und dem Kontaktteil 42 wirkt das Rückstellelement 46 in Form einer Druckfeder, um das Kontaktteil 42 jeweils in die Ruheposition entgegen der R-Richtung nach aussen zu stellen. Das Rückstellelement 46 ist hierbei in einem sich durch den Teleskoparm 440 nach aussen erstreckenden Sackloch parallel zur Betätigungsvorrichtung R im Verankerungsteil 44 gelagert und erstreckt sich bis in das Kontaktteil 42. Die Teleskopausnehmung 420 des Kontaktteils 42 ist als eine Durchgangsbohrung im Betätigungsrichtung R ausgestaltet, wobei der Teleskoparm 440 des Verankerungsteils 44 und die Druckfeder 46 in diese Durchgangsbohrung 420 eingreifen. Das aus dem Sackloch des Verankerungsteils 44 austretende Rückstellelement 46 erstreckt sich also in diese Durchgangsbohrung 420 des Kontaktteiles 42 hinein und endet in einem Einstellelement 48 des Kontaktteils 42.The contact part 42 is in this case of substantially triangular auslandender cross-sectional shape, which substantially fills the actuating recess 32 (s. Figs. 1 to 6 ) and has at its proximal end with respect to the pivot axes 51, 52 extending transversely to the direction of actuation R contact surface 43 for abutment on the cam-like stops 17, 27 of the pressing jaws 10, 20. The contact part 42 has by the triangular widening against the pair of rollers 72 a sufficiently large contact surface for contact with the pair of rollers 72. In this case, the contact part 42 is mounted on or in the anchoring part 44 such that the contact part 42 lies in the rest position in front of the stops 17, 27 (see FIG FIG. 3 ). Between the anchoring part 44 and the contact part 42, the restoring element 46 acts in the form of a compression spring in order to place the contact part 42 in the rest position against the R direction to the outside. The return element 46 is in this case mounted in an extending through the telescopic arm 440 outwardly blind hole parallel to the actuator R in the anchoring part 44 and extends into the contact part 42. The telescopic recess 420 of the contact part 42 is configured as a through hole in the direction of actuation R, wherein the Telescopic arm 440 of the anchoring part 44 and the compression spring 46 engage in this through hole 420. The resetting element 46 emerging from the blind hole of the anchoring part 44 thus extends into this through-hole 420 of the contact part 42 and ends in an adjusting element 48 of the contact part 42.

Das Einstellelement 48 ist ein Schraubenbolzen mit einer sacklochartigen, gegen die Betätigungsausnehmung 32 gerichteten Ausnehmung, in welche das Rückstellelement 46 eingreift und auf dessen Tiefe es unter Vorspannung ansteht. Das Einstellelement 48 ist über einen Gewindeeingriff mit dem Kontaktteil 42 des Steuerelements 40 in Kontakt. Über die Drehposition des Einstellelements 48 bezüglich der Betätigungsrichtung R relativ zum Kontaktteil 42 ist die Vorspannung des Rückstellelementes 46 einstellbar.The adjusting element 48 is a bolt with a blind hole-like, directed against the Betätigungsausnehmung 32 recess into which the restoring element 46 engages and at the depth of which it is biased. The adjustment member 48 is in threaded engagement with the contact portion 42 of the control member 40. About the rotational position of the adjusting member 48 relative to the actuating direction R relative to the contact part 42, the bias of the return element 46 is adjustable.

Am distal bezüglich der Schwenkachsen 51, 52 gelegenen Ende des Kontaktteil 42 weist das Kontaktteil 42 komplementär zum Walzenpaar 72 geformte, gerundete Ausnehmungen zum optimalen Eingriff des Walzenpaares 72 auf.At the distal end of the contact part 42 with respect to the pivot axes 51, 52, the contact part 42 has rounded recesses complementary to the pair of rollers 72 for optimum engagement of the roller pair 72.

Anhand der Figuren 8 bis 11 wird nun eine zweite bevorzugte Ausführungsform beschrieben. Das hierbei verwendete Steuerelement 40 weist im Gegensatz zu beschriebenen ersten Ausführungsform keinen Teleskoparm 440 auf; stattdessen wird das Kontaktteil 42 an der Verbindungslasche 50 geführt. Ansonsten sind die beiden Ausführungsformen gleichfunktionierend.Based on FIGS. 8 to 11 Now, a second preferred embodiment will be described. The control element 40 used in this case has no telescopic arm 440 in contrast to the first embodiment described; instead, the contact part 42 is guided on the connection tab 50. Otherwise, the two embodiments are the same function.

Das Laschenelement 50 gemäss Figur 8 weist beidseitig einen zusätzlichen, sich entgegen der R-Richtung erstreckenden Führungsabschnitte 61 auf. Die Betätigungsabschnitte 14, 24 greifen beim Verschwenken in die Aufnahmelage zwischen diese Führungsabschnitte 61 ein. Diese zwei Führungsabschnitte 61 tragen mittig in R-Richtung verlaufende und gegeneinander gerichtete Führungskämme 62. Man beachte hierzu auch Figur 10 , welche einen Querschnitt durch das Steuerelement 40, insbesondere durch das Kontaktteil 42 und die Führungsabschnitte 61 des Laschenelements 50 zeigt. Das Kontaktteil 42 weist den Führungskämmen 62 zugerichtete Führungsnuten 63 zum Eingriff der jeweiligen Führungskämme 62 auf. Durch diese in R-Richtung gerichtete Nuten-Kamm-Führung 61, 62, 63 ist eine Verdrehsicherung 60 bereitgestellt, welche sicherstellt, dass das somit linear verschieblich gelagerte Kontaktteil 42 nach der zweiten Ausführungsform sich nicht um eine Achse parallel zur R-Richtung verdreht.The tab element 50 according to FIG. 8 has on both sides of an additional, opposite to the R direction extending guide portions 61. The actuating portions 14, 24 engage during pivoting in the receiving position between these guide portions 61 a. These two guide sections 61 carry guide combs 62 running centrally in the R direction and directed against one another. It should also be noted here FIG. 10 Showing a cross section through the control 40, in particular by the contact part 42 and the guide portions 61 of the tab member 50th The contact part 42 has the guide cams 62 aligned guide grooves 63 for engagement of the respective guide combs 62. By means of this groove-comb guide 61, 62, 63 oriented in the R direction, an anti-rotation lock 60 is provided, which ensures that the contact part 42 thus mounted in a linearly displaceable manner according to the second embodiment does not rotate about an axis parallel to the R-direction.

Figur 9 zeigt die zweite Ausführungsform gemäss Fig. 8 in einer Seitenansicht. Die Presshebel bzw. Pressbacken 10, 20 sind hierbei in Presslage dargestellt; die Pressanschläge 13, 23 liegen aufeinander. Es ist erkennbar, dass sich die Verbindungslasche 50 entgegen der R-Richtung im Wesentlichen bis zu den Führungsabschnitten 61 verjüngt und sich das Kontaktteil 42 entgegen der R-Richtung dreiecksförmig verbreitert. FIG. 9 shows the second embodiment according to Fig. 8 in a side view. The press lever or pressing jaws 10, 20 are shown here in a pressed position; the Press stops 13, 23 lie on each other. It can be seen that the connecting strap 50 tapers substantially up to the guide sections 61 counter to the R direction, and the contact section 42 widens triangularly in the direction opposite to the R direction.

Figur 11 zeigt einen Längsschnitt durch das Steuerelement 40, insbesondere durch das Kontaktteil 42 und einen Führungsabschnitt 61. Der Führungskamm 62 dieses Führungsabschnitts 61 weist an seinem freien Ende eine Verdickung 45 auf, welche in die Teleskopausnehmung 420 des Kontaktteils 42 eingeführt ist. Hierbei übergreift der Kontaktteil 42 mit einem Endabschnitt 470 die Verdickung 450 beider Führungskämme 62, womit das Kontaktteil 42 und die Verbindungslasche 50 bzw. dessen Führungsabschnitte 61 einen Endanschlag aufweisen, in welchen sie das Federelement 46 drückt. FIG. 11 shows a longitudinal section through the control element 40, in particular by the contact part 42 and a guide portion 61. The guide comb 62 of this guide portion 61 has at its free end a thickening 45, which is inserted into the telescopic recess 420 of the contact part 42. Here, the contact part 42 overlaps with an end portion 470, the thickening 450 of both guide combs 62, whereby the contact part 42 and the connecting plate 50 and its guide portions 61 have an end stop, in which it pushes the spring element 46.

Vorteil der zweiten Ausführungsform ist, dass gegenüber der ersten Ausführungsform das Presswerkzeug aus weniger Einzelteilen besteht, da das Kontaktteil 42 im Führungsabschnitt 61 der Lasche 50 geführt ist und somit, wie aus Fig. 8 ersichtliche, zwischen dem Verankerungsteil 44 und dem Kontaktteil 42 lediglich die Feder als direktes Verbindungselement geführt ist. Der Führungsabschnitt 440 gemäss der ersten Ausführungsform ist nicht mehr vorhanden.Advantage of the second embodiment is that compared to the first embodiment, the pressing tool consists of fewer parts, since the contact part 42 is guided in the guide portion 61 of the tab 50 and thus, as shown Fig. 8 apparent, between the anchoring part 44 and the contact part 42, only the spring is guided as a direct connection element. The guide portion 440 according to the first embodiment is no longer present.

Die nockenartigen Anschläge 17, 27 sowohl der ersten als auch der zweiten Ausführungsform des Presswerkszeugs 2 weisen Anschlagsflächen 170, 270 auf, auf welche bei sich über die Mindestschliesslage gegen die Aufnahmelage hinverschwenkten Pressbacken 10, 20 die Kontaktfläche 43 des Kontaktteils 42 aufschlägt. Die Kontaktfläche 43 steht senkrecht zur R-Richtung. Die besagten Anschlagsflächen 170, 270 sind derart an den anschlagbildenden Nocken 17, 27 angebracht, dass sie parallel zur Kontaktfläche 43 stehen, wenn sich die Pressbacken 10, 20 in Aufnahmelage befinden. Hierbei sind die Anschläge 17, 27 bzw. deren Anschlagflächen 170, 270 in R-Richtung zwischen den Schwenkachsen 51, 52 angeordnet. Dies bewirkt, dass aufgrund des auf den Anschlagflächen 170, 270 anschlagenden Kontaktteils 42 ein Drehmoment auf Pressbacken 10, 20 wirkt, derart, dass die Pressbacken 10, 20 in die Aufnahmelage überführt werden. Befinden sich die Pressbacken 10, 20 also in einer Lage, welche zwischen der Mindestschliesslage und der Aufnahmelage liegt, so bewegt das Kontaktteil 42 die beiden Anschläge 17, 27 weiter in R-Richtung. Hierbei drehen sich die beiden Pressbacken 10, 20 aufgrund des wirkenden Drehmoments in die Aufnahmelage und der kantige Anschlag der Kontaktfläche 43 und der Anschlagsflächen 170, 270 wird ein flächiger Anschlag. Der Pressling wird damit freigegeben und das Kontaktteil 42 hat zu den beiden Anschläge 17, 27 in dieser Position die maximalen Auflageflächen. In dieser Position sind die Auflageflächen von Kontaktteil 42 und Anschlägen 17, 27, d.h. die Kontaktfläche 43 und die Anschlagsflächen 170, 270 parallel und quer zur R-Richtung, womit die kleinstmöglichen mechanischen Belastungen entstehen. Bei nicht korrekt angesetzter Verpressung wird also nicht nur die Verpressung blockiert, es werden auch die Pressbacken wieder in Aufnahmelage rückgeführt, womit der Pressling wieder freigegeben ist. BEZUGSZEICHENLISTE 1 Pressvorrichtung 40 Steuerelement 2 Presswerkzeug 42 Kontaktteil 420 Teleskopausnehmung 10 erste Pressbacke 43 Kontaktfläche 12 erster Pressabschnitt 45,450 Verdickung 120 erste Pressausnehmung 44 Verankerungsteil 121 erster Greifabschnitt 47,470 Endabschnitt 13 erster Pressanschlag 440 Teleskoparm 14 erster Betätigungsabschnitt 46 Rückstellelement 15 erste Schrägfläche 48 Einstellelement 17 erster Anschlag 170 erste Anschlagfläche 50 Verbindungslasche 18 erstes Sackloch 51 erste Schwenkachse 52 zweite Schwenkachse 20 zweite Pressbacke 22 zweiter Pressabschnitt 60 Verdrehsicherung 220 zweite Pressausnehmung 61 Führungsabschnitt von 50 221 zweiter Greifabschnitt 62 Führungskamm 23 zweiter Pressanschlag 63 Führungsnut 24 zweiter Betätigungsabschnitt 25 zweite Schrägfläche 70 Betätigungsvorrichtung 27 zweiter Anschlag 72 Walze 270 zweite Anschlagfläche 28 zweites Sackloch 80 Rohrklemme 82 Rohrpressling 30 Pressaufnahme 32 Betätigungsaufnahme R Betätigungsrichtung 35 Federelement The cam-like stops 17, 27 of both the first and the second embodiment of the pressing tool 2 have abutment surfaces 170, 270 on which the contact surface 43 of the contact part 42 abuts when the pressing jaws 10, 20 are pushed towards the receiving position via the minimum closing position. The contact surface 43 is perpendicular to the R direction. Said abutment surfaces 170, 270 are attached to the stop cams 17, 27 in such a way that they are parallel to the contact surface 43 when the pressing jaws 10, 20 are in the receiving position. Here, the stops 17, 27 and their stop surfaces 170, 270 in the R direction between the pivot axes 51, 52 are arranged. This has the effect that, due to the contact part 42 contacting the abutment surfaces 170, 270, a torque acts on the pressing jaws 10, 20, such that the pressing jaws 10, 20 are transferred into the receiving position. Are the pressing jaws 10, 20 so in a situation which between the minimum closing position and the receiving position, the contact part 42 moves the two stops 17, 27 further in the R direction. Here, the two pressing jaws 10, 20 rotate due to the torque acting in the receiving position and the angular stop of the contact surface 43 and the stop surfaces 170, 270 is a flat stop. The compact is thus released and the contact part 42 has to the two stops 17, 27 in this position, the maximum bearing surfaces. In this position, the bearing surfaces of the contact part 42 and stops 17, 27, that is, the contact surface 43 and the abutment surfaces 170, 270 parallel and transverse to the R direction, whereby the smallest possible mechanical stresses arise. If incorrectly applied pressing so not only the compression is blocked, it is also the pressing jaws returned to the receiving position, whereby the compact is released again. LIST OF REFERENCE NUMBERS 1 pressing device 40 control 2 press tool 42 contact part 420 Teleskopausnehmung 10 first pressing jaw 43 contact area 12 first pressing section 45.450 thickening 120 first press recess 44 anchoring part 121 first gripping portion 47.470 end 13 first press stop 440 telescopic arm 14 first operating section 46 Return element 15 first inclined surface 48 adjustment 17 first stop 170 first stop surface 50 connecting strap 18 first blind hole 51 first pivot axis 52 second pivot axis 20 second pressing jaw 22 second pressing section 60 twist 220 second press recess 61 Leading section of 50 221 second gripping portion 62 guide comb 23 second press stop 63 guide 24 second operating section 25 second inclined surface 70 actuator 27 second stop 72 roller 270 second stop surface 28 second blind hole 80 pipe clamp 82 Pipe pellet 30 Press recording 32 operation receiving R operating direction 35 spring element

Claims (15)

  1. A pressing tool (2) for pressing a moulded item, in particular a fitting or a pipe section for pipe connections, comprising two lever-like pressing jaws (10, 20), which are for pressing pliers-like between a receiving position and a pressing position pivotably mounted relative to one another and each comprising a pressing portion (12, 22) and an actuating portion (14, 24),
    wherein the pressing portions (12, 22) form a pressing receptacle (30) for the moulded item in the receiving position such, that the pressing portions (12, 22) during pivoting from the receiving position via a minimal closing position to the pressing position press the moulded item being received in the pressing receptacle (30) in a predetermined manner,
    and wherein at least one of the actuating portions (14, 24) is configured to be actuatable by an actuation device (70),
    wherein the pressing tool (2) further comprises a control element (40) which blocks the actuation device (70) while the pressing jaws (10, 20) are in a position being between the receiving position and the minimal closing position,
    characterized in that
    the control element (40) comprises a contacting part (42) for contacting the actuation device (70) which is mounted movable relative to the actuating portions (14, 24).
  2. The pressing tool (2) according to claim 1, wherein the contacting part (42) is configured such, that the contacting part (42) contacts the actuation device (70) before the actuation device (70) for pivoting acts on the actuating portions (14, 24).
  3. The pressing tool (2) according to claim 1 or 2, wherein at least one of the pressing jaws (10, 20) provides a stop (17, 27) for the contacting part (42), wherein the contacting part (42) and the stop (17, 27) are configured such, that the contacting part (42), if the pressing jaws (10, 20) are in a position which is between the receiving position and the minimal closing position, abuts via a contacting surface (43) of the contacting part (42) against said stop (17, 27) and blocks the actuation device (70) contacting the contacting part (42) in the actuating direction (R) before the actuation device (70) acts on the at least one actuating portion (14, 24).
  4. The pressing tool (2) according to claim 3, wherein the actuating portions (14, 24) provide an actuating recess (32) for engaging the actuation device (70) in the actuating direction (R), wherein the control element (40) is arranged in said actuating recess (32), wherein said actuating recess (32) preferably conically tapers towards outside via inclined surfaces (15, 25) counter to the actuating direction (R), such that the actuation device (70) during the actuation of the pressing tool (2) on said inclined surfaces (15, 25) pressingly causes the pressing.
  5. The pressing tool (2) according to claim 4, wherein the stop (17, 27) is provided by a stop edge at the end section of the inclined surface (15, 25) being proximally arranged with respect to the pressing receptacle (30).
  6. The pressing tool (2) according to any one of claims 1 to 5, which further comprises a connecting lug (50) in which the pressing jaws (10, 20) are each mounted at a pivot axis (51, 52), wherein both pressing jaws (10, 20) in each case comprise a stop (17, 27), and wherein
    - the two pivot axes (51, 52) are arranged transversely with respect to the actuating direction (R) spaced apart in the connecting lug (50) in a manner such, that said contacting surface (43), which is in the actuating direction (R) movably mounted with the contacting part (42), is positioned in a transverse direction with respect to the actuating direction (R) between the pivot axes (51, 52), and
    - the stops (17, 27) are furthermore inclined with respect to said transverse direction such, that the pressing jaws (10, 20) abutting in the blocking position against the contacting surface (43) via their stops (17, 27) are transferable through the actuation device (70) sliding along the contacting surface (43) from the blocking position into the receiving position.
  7. The pressing tool (2) according to any one of claims 4 or 6, wherein the control element (40) further comprises an anchoring part (44), wherein the anchoring part (44) is fixedly mounted in the actuating recess (32), preferably at the connecting lug (50), and wherein the contacting part (42) is movably mounted at the connecting lug (50) or at the anchoring part (44) with respect to the anchoring part (44) in the actuating recess (32) in the actuating direction (R).
  8. The pressing tool (2) according to any one of claims 1 to 7, wherein the pressing tool (2) comprises an anti-rotation device (60) for the contacting part (42), which anti-rotation device (60) inhibits a rotary motion of the contacting part (42) about an axis being parallel to the actuating direction (R), wherein said anti-rotation device (60) is preferably provided by a grooves-comb-guide (62, 63) in the actuating direction (R) between the contacting part (42) and connecting lug (50) or contacting part (42) and anchoring part (44).
  9. The pressing tool (2) according to claim 7 or 8, wherein the contacting part (42) has a substantially triangular cross-sectional shape tapering in the actuating direction (R) and/or wherein the anchoring part (44) is attached in the depth of the actuating recess (32) and the contacting part (42) is movable, in particular telescopic, against this depth in the actuating direction (R).
  10. The pressing tool (2) according to any one of claims 7 to 9, wherein a return element (46) is arranged between the anchoring part (44) and the contacting part (42) and wherein the control element (40) preferably comprises an adjustment element (48) for adjusting a preload of the return element (46).
  11. The pressing tool (2) according to any one of claims 1 to 10, wherein at least one spring element (35) is arranged in the pressing tool (2), preferably between the pressing jaws (10, 20), such that the pressing portions (14, 24) are impinged with a preload, wherein said preload presses the pressing jaws (10, 20) against the pressing position such, that a moulded item being received in the pressing receptacle (30) is contacted by the pressing portions (14, 24), wherein the preload is chosen such that it alone is not sufficient to pressingly deform the moulded item.
  12. The pressing tool (2) according to claim 11, wherein each of the pressing jaws (10, 20) comprises a blind hole (18, 28), wherein openings of the blind holes (18, 28) are preferably arranged directly opposite with respect to each other when the pressing jaws (10, 20) are in the receiving position, and wherein the spring element (35) is arranged in these blind holes (18, 28), which in each case abutting on a depth of each blind hole (18, 28) extends under tension from one blind hole (18, 28) into the opposite blind hole and is dimensioned such, that the pressing jaws (10, 20) are kept in the pressing position without external effects on the pressing tool (2).
  13. The pressing tool (2) according to any one of claims 1 to 12, wherein the pressing receptacle (30) is formed such, that either pipe clamps (80) with ear gap lugs or pipe sections are compressible.
  14. Pressing device (1) comprising the pressing tool (2) according to any one of claims 1 to 13 and an actuation device (70) with rolls (72).
  15. The pressing device (1) according to claim 14, wherein the pressing tool (2) is a pressing tool (2) according to any one of claims 5 to 13, wherein the rolls (72) are configured to press onto the contacting part (42) of the control element (40) and wherein the rolls (42) are further configured to act on the actuating portions (14, 24) for pivoting the pressing portions (12, 22) when the contacting part (42) in the actuating direction (R) is pressed until over the stop (17, 27) into the depth of the pressing receptacle (30).
EP13164965.9A 2013-04-23 2013-04-23 Pressing tool Active EP2796245B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13164965.9A EP2796245B1 (en) 2013-04-23 2013-04-23 Pressing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13164965.9A EP2796245B1 (en) 2013-04-23 2013-04-23 Pressing tool

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EP2796245A1 EP2796245A1 (en) 2014-10-29
EP2796245B1 true EP2796245B1 (en) 2016-07-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112372583A (en) * 2020-12-14 2021-02-19 泰州市华龙家电配件有限公司 Washing machine inlet tube crossover sub mounting tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3718695T3 (en) * 2019-04-05 2021-11-22 Geberit Int Ag PRESS TOOL FOR A FITTING WITH PRESS JAW

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9501251D0 (en) * 1995-04-03 1995-04-03 Attexor Equip Merhod and apparatus for carrying out an operatopn on a mechanical workpiece
EP1092487A3 (en) 1999-10-15 2004-08-25 Gustav Klauke GmbH Pressing tool with pressure jaws
FR2804354B1 (en) * 2000-01-31 2002-03-22 Dubuis Et Cie M TIGHTENING TOOL AND PARTICULARLY CRIMPING
SE0200862D0 (en) * 2002-03-19 2002-03-19 Attexor Clinch Systems Sa Safety arrangement for an apparatus for carrying out a squeezing type of operation on a mechanical workpiece
EP1854566A1 (en) * 2006-05-10 2007-11-14 Di Jurado Amelia, Jurado Compound machine
DE202008015574U1 (en) * 2008-11-24 2009-12-31 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Drive device for a pressing device and pressing device with such a drive device
SI2341273T1 (en) 2010-01-05 2012-09-28 Geberit Int Ag Tube clamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112372583A (en) * 2020-12-14 2021-02-19 泰州市华龙家电配件有限公司 Washing machine inlet tube crossover sub mounting tool
CN112372583B (en) * 2020-12-14 2021-11-02 泰州市华龙家电配件有限公司 Washing machine inlet tube crossover sub mounting tool

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