EP1157786B1 - Outil de sertissage pour sertir un élément déconnection - Google Patents

Outil de sertissage pour sertir un élément déconnection Download PDF

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Publication number
EP1157786B1
EP1157786B1 EP01810398A EP01810398A EP1157786B1 EP 1157786 B1 EP1157786 B1 EP 1157786B1 EP 01810398 A EP01810398 A EP 01810398A EP 01810398 A EP01810398 A EP 01810398A EP 1157786 B1 EP1157786 B1 EP 1157786B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressing tool
piston
tool according
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01810398A
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German (de)
English (en)
Other versions
EP1157786A3 (fr
EP1157786A2 (fr
Inventor
René Amherd
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.)
Von Arx AG
Original Assignee
Von Arx 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 Von Arx AG filed Critical Von Arx AG
Publication of EP1157786A2 publication Critical patent/EP1157786A2/fr
Publication of EP1157786A3 publication Critical patent/EP1157786A3/fr
Application granted granted Critical
Publication of EP1157786B1 publication Critical patent/EP1157786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

  • the present invention relates to a portable, hydraulically operated pressing tool for the compression of coupling elements, with a fork-shaped receptacle and held in this recording clamping pliers which can be actuated by means of a piston-cylinder unit with integrated return spring having the features of the preamble of claim 1.
  • Portable, hydraulically operated pressing tools of the type mentioned are used for pressing of coupling elements, such as press sleeves, press fittings, pipe sleeves, telescoped pipe sections and the like.
  • the pressing tools have a clamping pliers with clamping jaws, which form a pressing space for receiving the coupling element to be pressed.
  • the pressing pressure necessary for the compression is supplied by a, generally hydraulic, drive.
  • the devices of interest here are preferably used on construction sites, they are usually electrically operated devices.
  • electrically operated press tool devices as they are known for example from EP-A-0'712'696 (Pamag AG).
  • Most of these devices are powered via the network.
  • the availability of electrical connections on construction sites is low. Therefore, it is desirable to be able to work off-grid by the device is operated by means of a battery.
  • the performance of battery-powered devices is highly dependent on energy economics so that reasonable battery life per battery charge can be achieved.
  • the hydraulic pump which is realized here as a piston pump, acts on a piston-cylinder unit with integrated return spring, wherein the pump is arranged completely in a hydraulic block, which is arranged between the drive-side gear and a piston-cylinder unit.
  • the solution according to the invention is realized by the use of a gear pump. Since a gear pump with sufficient power requires a lot of space, is their Arrangement in the device of crucial importance in order to achieve the said solution can, without significantly enlarging the device, which makes it unmanageable by the extra weight alone.
  • the invention achieves this by using, on the one hand, a modular construction in which the gear pump is arranged on the one hand in the hydraulic block, but on the other hand, it is supported on both sides of the hydraulic block in the two adjacent modules. This also results in an extremely compact arrangement with correspondingly short hydraulic lines and leads accordingly to a, despite built-in batteries, relatively light pressing tool.
  • the pressing tool 0 is an electro-hydraulic device, which is realized here as a battery-powered device.
  • the pressing tool 0 has a press tool unit 2 on which a handle 1 is formed.
  • a battery housing 6 is formed as a removable part.
  • a fork-shaped receptacle 3 can be seen.
  • the clamping pliers 4 is held. This is held secured by a locking pin 5 in the receptacle 3.
  • a trigger switch 8 is available for the operation of the device.
  • the actual structure of the press tool function unit 2 can be seen in FIG.
  • the electric motor 10 which is powered by the battery power supply 7. Between the electric motor 10 and the battery 7, the trigger switch 8 is arranged.
  • the electric motor 10 has an output shaft 11 with an end Abreteritzel 12.
  • This Abreteritzel 12 meshes with a transmission gear 13, which is mounted on a transmission output shaft 16.
  • the transmission output shaft 16 is supported on the one hand in a transmission bearing 14 and on the other hand in a transmission housing 15, which passes through the transmission output shaft 16 sealingly.
  • the transmission output shaft 16 forms one of the two rotor shafts 19 of a gear pump 18 (see Figure 3).
  • the lower rotor shaft 19 is also mounted in the transmission housing 15. The abutment of both rotor shafts 19 are held in the cylinder housing 21 of the piston-cylinder unit 20 in corresponding plain bearings.
  • a muzzle pin 27 is mounted at the bottom, communicating on the one hand with a variable volume reservoir 28 in connection and on the other hand via corresponding supply bores in the hydraulic block via a valve unit 31 to the gear pump 18 is connected.
  • a flow line 29 and a pressure line 30 are also realized as bores, via which the mentioned orifice pin 27 with the gear pump 18 on the one hand and on the other hand, the gear pump 18 communicates with the piston-cylinder unit 20 in communicating connection.
  • a piston chamber return 26 is provided, can be recycled via the displaced during the load stroke hydraulic oil via the muzzle pin 27 in the variable volume reservoir 28 or in the provision the piston according to hydraulic oil can be returned to the piston chamber.
  • the piston-cylinder unit 20 with the cylinder housing 21 is designed conventionally, with the exception of the integrated plain bearings for the rotor shafts of the gear pump.
  • the piston 20 on which a return spring 25 acts.
  • the piston 22 displaces via the piston rod 23 a roller bearing 24 for actuating the clamping tongs 4.
  • valve unit 31 has two housing parts which can be screwed together, the one housing part receiving the first, flow switching valve 32, while the second, larger housing part accommodates a ball valve 38 as a second valve.
  • the first valve 32 is separated from the second valve 38 by a valve plate 37.
  • a hollow piston 33 is mounted axially displaceable.
  • the path of the hollow piston 33 is limited on the input side by a securing ring 52 and on the other side by the valve plate 37.
  • the hollow piston 33 is completely open on the side directed toward the valve plate 37, while a relatively small relief bore 34 is arranged in the closed piston head end.
  • the housing part 33 'thus forms the cylinder of the valve, in which the hollow piston 33 is mounted axially movable.
  • a return spring 36 which rests on the one hand inside the piston head and on the other hand is supported on the valve plate 37.
  • the applied oil pressure D shifts the hollow piston 33 against the force of the return compression spring 36 until the hollow piston 33 releases the lateral flow openings 35 to the pressure line.
  • Via the pressure line 30 the hydraulic oil enters the piston-cylinder unit 20 and shifts the piston 22, which moves the roller bearing 24 with its piston rod 23, which leads to the operation of the clamping tongs 4.
  • the second valve 38 is, as already mentioned, a ball valve. This is on the one hand via the return bore 39 in communication with the pressure line and on the other hand via the through hole 40 through the valve plate 37 in communication with the cylinder 33 'of the first valve. However, this connection is opened or closed by the valve ball 41 depending on the pressure.
  • the second valve 38 has a valve body 42 with a valve body foot 43.
  • the valve body foot 43 has the shape of a circular disc which is integrally connected to the valve body 42 and in the center of a ball seat 53 is inserted, in which the valve ball 41 partially stored.
  • the valve plate 37 forms the valve seat for the valve ball 41.
  • a spring abutment 45 is screwed in the shape of a ring.
  • a compression spring 46 is arranged between the spring counter bearing 45 and the valve body 43.
  • the characteristic of this compression spring 46 determines the switching pressure. If the switching pressure is reached, the valve ball 41 is raised, a counter-pressure is created on the hollow piston 33, and the hollow piston 33 is displaced back to the securing ring 52 with the aid of the return pressure spring 36, the flow openings 35 being closed become. This is independent of whether the gear pump 18 still promotes or not.
  • a push button 48 If it comes from here not further discussed reasons for blocking or incomplete Hubausaims, it can be reduced by manual operation of a push button 48, the pressure.
  • the push button 48 is held by a return spring 47 in the starting position.
  • a tilting surface 50 By pressing the pushbutton 48, a rounded head 49 of the valve body 42 comes to lie in an eccentric bore, which is referred to as a tilting surface 50.
  • the head 49 is thereby pivoted to the side, wherein the entire valve body 42 participates this pivoting movement.
  • the valve body foot 43 comes with a tilting edge 44 on the valve plate 37 on one side to concern and pivots about the contact point.
  • the valve body foot 43 lifts slightly in the middle, whereby the valve ball 41 is depressurized.
  • the pressure can now dissipate through the through hole 40 in the valve plate 37 and the first valve 32 closes again.
  • the hollow piston 33 When closing the first valve 32, the hollow piston 33 jerks back. For the user, the beating of the valve is audible. As soon as he hears the closing of the valve, he will consequently release the trigger switch 8. But it is quite possible in the cylinder 33 'of the first valve 32 in lower region to arrange a sensor 51 which acts on the trigger switch 8, or the feed line from the battery 7 to the electric motor 10 interrupts. This sensor is activated with a time delay, so that it is activated only when the hollow piston 33 is in the opening state and thus only realizes the closing process. By means of such a sensor 51 it can be ensured that the user does not unnecessarily load the energy source after completion of a lifting movement.
  • the embodiment shown here shows a battery-powered device.
  • the enormous advantages, namely the short operating time per stroke, the extremely inexpensive manufacturability and the achievable by the compact arrangement weight saving are of course also desirable in network-dependent pressing tools.
  • the invention therefore also relates to network-dependent pressing tools.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Hydraulic Motors (AREA)
  • Reciprocating Pumps (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Claims (10)

  1. Outil de pressage (0) portatif à fonctionnement hydraulique, pour presser des éléments d'accouplement avec une réception en forme de fourche (3) et une pince de serrage (4) maintenue dans cette réception qui peut être actionnée au moyen d'une unité de cylindre à piston (20) avec un ressort de rappel intégré (25), et la pression présente sur l'unité de cylindre à piston étant produite par une pompe hydraulique (18) qui est entraînée par un moteur électrique, moyennant quoi la pompe est placée dans un bloc hydraulique qui est placé entre l'engrenage côté entraînement (13) et l'unité de cylindre à piston (20), caractérisé en ce que la pompe est une pompe à engrenages (18) dont les arbres de rotor (19) reposent sur un côté dans un logement de palier (15) de l'arbre de sortie de l'engrenage (16) et sur l'autre côté dans le logement (21) de l'unité de cylindre à piston (20).
  2. Outil de pressage selon la revendication 1, caractérisé en ce que l'ensemble des conduites de pression hydrauliques sont réalisées comme des perçages dans le bloc hydraulique (17) dans lequel sont également placés l'arbre de rotor (19) de la pompe à engrenages (18) et une unité de soupape (31).
  3. Outil de pressage selon la revendication 1, caractérisé en ce qu'un perçage est placé dans le bloc hydraulique (17) dans lequel un pivot d'ouverture (27) est fixé qui maintient un réservoir (28) modifiable en volume.
  4. Outil de pressage selon la revendication 3, caractérisé en ce que l'unité de soupape (31) est placée dans le bloc hydraulique (17) entre la pompe à engrenages (18) et le pivot d'ouverture (27).
  5. Outil de pressage selon la revendication 1, caractérisé en ce que l'unité de soupape (31) comprend deux soupapes montées l'une derrière l'autre (32,38), moyennant quoi la première soupape avant (32) comprend un piston creux (33) sollicité par ressort (36) comme corps de soupape qui est mobile en fonction de la pression dans un cylindre (33') et que la deuxième soupape suivante (38) est une soupape à bille, moyennant quoi la bille (41) repose en sollicitation par pression de ressort à travers une plaque de soupape (37) entre la première (32) et la deuxième soupape (38) sur un perçage traversant (40), de façon à ce que le piston creux (33) ouvre et ferme des ouvertures (35) de la ligne de pression et que la soupape à bille (38) ouvre et ferme le trajet de retour (39) à travers la plaque de soupape (37) .
  6. Outil de pressage selon la revendication 5, caractérisé en ce que la soupape à bille (38) comprend un corps de soupape (42) avec un socle (43) à arête de basculement (44), moyennant quoi la bille de soupape (41) est positionnée dans une réception (41') du socle tandis qu'un bouton poussoir (48) pouvant être poussé manuellement est placé au-dessus d'une tête (49) du corps de soupape (42) au moyen duquel la tête (49) du corps de soupape peut être poussée sur le côté de façon à ce que le corps de soupape (42) bascule de la direction axiale et exerce un mouvement de basculement sur l'arête de basculement (44) du socle (43), ce par quoi la soupape à bille s'ouvre (38).
  7. Outil de pressage selon la revendication 1, caractérisé en ce que le moteur électrique (10) est alimenté par une batterie (6) présente dans l'outil.
  8. Outil de pressage selon la revendication 7, caractérisé en ce que le mouvement de rappel du piston creux (33) peut être surveillé au moyen d'un capteur (51) et arrête le moteur électrique alimenté par batterie (10).
  9. Outil de pressage selon la revendication 6, caractérisé en ce que le bouton poussoir présente sur sa face intérieure une surface de basculement excentrique (50) sur laquelle vient se poser la tête (49) lorsque le bouton poussoir (48) est actionné et qui peut être décalée du centre vers le côté dans un mouvement de bascule.
  10. Outil de pressage selon la revendication 3, caractérisé en ce que le réservoir (28) modifiable en volume est un soufflet en caoutchouc.
EP01810398A 2000-05-25 2001-04-24 Outil de sertissage pour sertir un élément déconnection Expired - Lifetime EP1157786B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10522000 2000-05-25
CH105200 2000-05-25

Publications (3)

Publication Number Publication Date
EP1157786A2 EP1157786A2 (fr) 2001-11-28
EP1157786A3 EP1157786A3 (fr) 2002-01-16
EP1157786B1 true EP1157786B1 (fr) 2006-12-13

Family

ID=4554891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810398A Expired - Lifetime EP1157786B1 (fr) 2000-05-25 2001-04-24 Outil de sertissage pour sertir un élément déconnection

Country Status (5)

Country Link
US (1) US6510723B2 (fr)
EP (1) EP1157786B1 (fr)
AT (1) ATE347973T1 (fr)
DE (1) DE50111613D1 (fr)
ES (1) ES2277907T3 (fr)

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Publication number Priority date Publication date Assignee Title
US6510719B2 (en) * 2000-04-28 2003-01-28 Novartec @ Ag Pressing tool and pressing process for extruding press fittings
US7036806B2 (en) * 2001-06-19 2006-05-02 Von Arx Ag Press tool comprising a spindle for moulding coupling elements
US6745611B2 (en) * 2002-02-19 2004-06-08 Fci Americas Technology, Inc. Battery powered hydraulic tool
ES2295947T3 (es) * 2003-11-20 2008-04-16 Von Arx Ag Unidad de soporte de rodillos.
JP2007512967A (ja) * 2003-12-04 2007-05-24 フォン、アークス、アクチェンゲゼルシャフト 電動式加圧工具装置
DE202006013693U1 (de) * 2006-09-07 2008-01-17 Gustav Klauke Gmbh Pressbackenpaar für hydraulische oder elektrische Verpressgeräte
US20080016939A1 (en) * 2004-07-02 2008-01-24 Egbert Frenken Pair of pressing jaws for hydraulic or electric pressing tools
US7216523B2 (en) 2004-07-02 2007-05-15 Gustav Klauke Gmbh Pair of pressing jaws for hydraulic or electric pressing tools, and insulating covering for a pressing jaw
RU2370358C2 (ru) * 2004-08-26 2009-10-20 Фон Аркс Аг Игольный пистолет
US7464578B2 (en) * 2005-06-03 2008-12-16 Fci Americas Technology, Inc. Hand-held, portable, battery-powered hydraulic tool
DE102007005837B4 (de) * 2006-02-03 2016-04-07 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Antriebseinheit für ein Preßgerät
DE202006001889U1 (de) * 2006-02-03 2007-03-08 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Antriebseinheit für ein Preßgerät
DE102007007294B3 (de) * 2007-02-14 2008-07-10 Rothenberger Ag Antriebsgerät mit einer Kupplung für Werkzeugköpfe
EP2135709B1 (fr) * 2008-06-18 2016-03-23 Von Arx AG Outil de compression électrique
CH699690B1 (de) * 2008-10-03 2012-07-31 Arx Ag Rollenhaltereinheit.
DE202008015574U1 (de) 2008-11-24 2009-12-31 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Antriebseinrichtung für ein Pressgerät sowie Pressgerät mit einer solchen Antriebseinrichtung
DE202009003197U1 (de) 2009-03-10 2010-05-06 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Handführbare Antriebseinrichtung für ein Pressgerät
DE202009003196U1 (de) 2009-03-10 2010-04-29 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kommanditgesellschaft Handführbare Antriebseinrichtung für ein Pressgerät
US9388885B2 (en) 2013-03-15 2016-07-12 Ideal Industries, Inc. Multi-tool transmission and attachments for rotary tool
US9774159B2 (en) 2015-01-16 2017-09-26 Ridge Tool Company Deflection compensating press tools
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US10312653B2 (en) 2015-05-06 2019-06-04 Milwaukee Electric Tool Corporation Hydraulic tool
WO2016201196A1 (fr) 2015-06-10 2016-12-15 Milwaukee Electric Tool Corporation Outil d'expansion pex
CN105538235B (zh) * 2016-01-25 2017-09-29 山东华伟液压科技有限公司 一种缸体内部压缩弹簧的装配工装及其装配方法
US9993910B2 (en) 2016-04-14 2018-06-12 Ronald Livingston Method and apparatus for pliers
USD835487S1 (en) * 2017-05-15 2018-12-11 Hubbell Incorporated Handle for in-line power tools
US11426806B2 (en) 2018-04-10 2022-08-30 Hubbell Incorporated Portable in-line cutting tool with stabilizer
DE102019217816A1 (de) 2018-11-29 2020-06-04 Ridge Tool Company Werkzeugköpfe für scherarbeiten
USD1044445S1 (en) * 2022-01-14 2024-10-01 Yuhuan Dingli Tools Co., Ltd. Crimping tool
DE102022201368A1 (de) 2022-02-10 2023-08-10 Robert Bosch Gesellschaft mit beschränkter Haftung Pumpvorrichtung mit Kupplung für Antriebsvorrichtung
EP4321301A1 (fr) * 2022-08-08 2024-02-14 HYTORC Drehmomentmaschinen Seis GmbH Outil dynamométrique fonctionnant sur batterie
USD1042074S1 (en) 2022-09-07 2024-09-17 Hubbell Incorporated Handle for power tools

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CH688470A5 (de) 1994-11-16 1997-10-15 Pamag Ag Presswerkzeug.
JP3792307B2 (ja) * 1996-08-26 2006-07-05 株式会社オグラ 油圧作動装置
DE19743747B4 (de) * 1997-07-19 2013-07-18 Gustav Klauke Gmbh Kolbenpumpe
IT1295321B1 (it) * 1997-10-13 1999-05-04 Cbc Spa Dispositivo strozzatubi a trasmissione idraulica
US6152715A (en) * 1998-01-30 2000-11-28 Kaempe; Staffan I. Pressure clamped hydraulic pump

Also Published As

Publication number Publication date
US20020007658A1 (en) 2002-01-24
EP1157786A3 (fr) 2002-01-16
US6510723B2 (en) 2003-01-28
ES2277907T3 (es) 2007-08-01
ATE347973T1 (de) 2007-01-15
DE50111613D1 (de) 2007-01-25
EP1157786A2 (fr) 2001-11-28

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