EP2643125B1 - Dispositif de serrage électrohydraulique - Google Patents

Dispositif de serrage électrohydraulique Download PDF

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Publication number
EP2643125B1
EP2643125B1 EP20120778337 EP12778337A EP2643125B1 EP 2643125 B1 EP2643125 B1 EP 2643125B1 EP 20120778337 EP20120778337 EP 20120778337 EP 12778337 A EP12778337 A EP 12778337A EP 2643125 B1 EP2643125 B1 EP 2643125B1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
chamber
electro
pressing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20120778337
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German (de)
English (en)
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EP2643125A1 (fr
Inventor
Volker Reichel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novopress GmbH Pressen und Presswerkzeuge and Co KG
Original Assignee
Novopress GmbH Pressen und Presswerkzeuge and Co KG
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
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Publication of EP2643125A1 publication Critical patent/EP2643125A1/fr
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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
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0428—Power-driven hand crimping tools

Definitions

  • the invention relates to an electro-hydraulic pressing device, in particular for producing pipe connections by means of press fittings and for producing crimp connections in electrical engineering.
  • Such a pressing device as for example in DE 20 2004 000 215 U is described, for example, has two pliers-like pressing jaws. These are actuated by an electro-hydraulic drive.
  • a pressure piston is provided in a piston chamber, the pressure chamber is connected to the hydraulic pump.
  • the pressure piston is moved by pumping fluid into the pressure chamber.
  • the pressing jaws are closed, wherein the pressure piston possibly actuates the pressing jaws via a roller head.
  • so-called press loops are also known pliers-like pressing devices known. These have a plurality of articulated pressing jaws, which are wrapped, for example, around a press fitting to be pressed.
  • the opening of the press sling is connected to a pressing device, so that compression takes place by contraction of the press sling.
  • the pressing device used in this case is essentially corresponding to that in the DE 20 2004 000 215 U formed pressing device described.
  • axial compression devices are known in which also the pressure buildup is electro-hydraulic to move a pressure piston.
  • a control valve In the hydraulic pump connecting to the pressure chamber flow channel, a control valve is also provided. Upon reaching the cut-off pressure decreases due to the opening of the pressure relief valve, the pressure in the pressure chamber and thus also in the connecting channel between the hydraulic pump and the pressure chamber. This leads to switching of the control valve, whereby a return flow is opened.
  • the return flow channel connects the pressure chamber with the fluid reservoir.
  • the control valve is here in DE 20 2004 000 215 such that fluid is pumped from the hydraulic pump through a narrow channel provided in the valve piston of the control valve during the injection process. Upon reaching the cut-off pressure and thus decreasing the pressure in the pressure chamber, the spring-loaded valve piston of the control valve is displaced and releases the return flow channel.
  • the pushing back of the pressure piston in the starting position is effected by a return spring disposed in the pressure chamber. This presses when resetting the fluid present in the pressure chamber through the control valve free given return flow into the reservoir.
  • a disadvantage of the in the DE 20 2004 000 215 described pressing device is that in order to carry out the pressing operation, the hydraulic fluid from the hydraulic pump must be pumped through the small cross-section opening in the control valve. This affects the efficiency. Furthermore, openings with a small cross section are susceptible to contamination.
  • an electro-hydraulic pressing device known.
  • a needle valve is arranged in the return flow. This needle valve is opened upon reaching the cut-off, so that the hydraulic fluid is pushed back from the pressure chamber by means of the return spring in the reservoir.
  • the needle valve arranged in the return flow channel has a channel with a small cross section which is closed with the valve needle during the pressing process. Since here too a channel is provided with a small cross-section, through which the fluid must be pressed through, the efficiency of the in DE 198 25 160 described pressing device when pushing back the pressure piston low. Furthermore, there is also the disadvantage that the channel provided in the needle valve slightly contaminates with a small cross section.
  • a similar electro-hydraulic pressing device is off DE 20 2006 001 889 U1 known.
  • This also has a pressing jaw acting on the pressure piston, through which a piston chamber is divided into a pressure chamber and a rear space.
  • a hydraulic pump hydraulic fluid is conveyed from a reservoir into the pressure chamber.
  • a return spring for pushing back the pressure piston is arranged after pressing.
  • a pressure relief valve is arranged in the pressure piston, which opens a connection channel between a piston interior and the rear space upon reaching a cut-off.
  • the object of the invention is to provide an electro-hydraulic pressing device, which is particularly suitable for the production of pipe connections by means of press fittings, which has a good efficiency both when opening and closing the press jaws.
  • the electrohydraulic pressing device has a pressure piston acting on pressing jaws.
  • the pressure piston can act on pressing jaws directly or through intermediary elements, such as a roller head.
  • intermediary elements such as a roller head.
  • an indirect action the pressing jaws ie a closing of the press loop done.
  • Such electro-hydraulic pressing devices are particularly suitable for the production of pipe connections by means of press fittings, but also for crimping cable lugs and the like.
  • the pressure piston is slidably disposed in a piston chamber, wherein the piston chamber is divided by the pressure piston in a pressure chamber and a rear space.
  • Hydraulic fluid can be pumped from a reservoir into the pressure chamber with the aid of a hydraulic pump.
  • a return spring is provided in the pressure chamber opposite the rear space arranged. This serves to push back the pressure piston in its initial position after pressing.
  • the pressure piston designed in particular as a needle valve pressure relief valve is arranged.
  • the pressure relief valve opens a connecting channel, which is arranged between the rear space and a piston interior.
  • the channel as well as in DE 20 2004 000 215 described, laterally past a valve piston of the pressure relief valve.
  • a balance piston is arranged in the piston interior.
  • the balance piston opens a connection opening to allow pushing back of the pressure piston after pressing into the starting position. Accordingly, the connection opening is closed by the balance piston when the pressure piston is moved from its initial position during the pressing operation.
  • the connection opening is arranged between the pressure chamber and the piston interior. Furthermore, the balance piston closes a return flow channel until reaching the cut-off pressure. Upon reaching the cut-off pressure, the balance piston is moved, whereby on the one hand the connection opening between the pressure chamber and Piston interior is opened and thereby also the return flow channel is opened.
  • the balance piston is thus arranged within the pressure piston and is moved together with the pressure piston during the compression process, during which no relative movement between the balance piston and the pressure piston takes place during the compression process. This takes place only when reaching the cut-off pressure. After reaching the cut-off pressure and thereby causing displacement of the balance piston of the pressure piston is pushed back by the return spring to its original position.
  • the fluid present in the pressure chamber flows through the connection opening into the return flow channel. Since the connecting channel is preferably arranged in the pressure piston, the fluid flows back through the pressure piston. Since the fluid flows directly into the pressure space during the compression process and no valve is arranged in the flow path, the pressing operation can be carried out by moving the pressure piston during the pressing operation with high efficiency.
  • the pushing back of the pressure piston with the return spring can be done with high efficiency, since the connection opening, which can be closed by the balance piston, must not be designed as a needle valve. As a result, problems with impurities are avoided or at least reduced.
  • the connecting piston which preferably has a relatively large cross section, is opened by the balance piston so that the working piston automatically returns to the rear end position or the starting position. This can be done very quickly due to the provision of a large cross-section of the connection opening.
  • a compression spring could be provided, which presses the balance piston in the direction of the connection opening during the Verpressvorvorgang for closing the same.
  • this spring can be omitted or at least be designed as a weak, purely supporting spring.
  • This is the piston interior is connected via a feed channel to the pressure chamber. Through this supply passage, fluid flows into the interior of the piston during the injection process onto the rear side of the balance piston and presses it into the connection opening or a valve seat surrounding the connection opening or against an edge of the connection opening. Since the supply channel is open during the entire injection process, the pressure on the back of the balance piston increases in accordance with the pressure rise in the pressure chamber. As a result, the balance piston is pressed ever more firmly against the connection opening. As a result, in spite of the increase in the pressure in the pressure chamber, a displacement of the balance piston caused thereby and thus opening of the connection opening is avoided.
  • a support of the holding of the balance piston in a closed position by a spring arranged on the back of the balance piston can be completely eliminated, in particular, if the back of the balance piston has a pressure surface whose pressure-relevant cross section is greater than the opening cross section of the connection opening.
  • the force acting on the rear side of the balance piston is greater than the force acting on a front side of the balance piston closing the connection opening.
  • the pressing device is located at the beginning of a Verpressvorgangs, ie, before the pressure piston starts to move, an end face of the pressure piston to a sealing seat of the piston chamber.
  • This is the end face of the piston in which the connection opening is arranged.
  • the sealing seat surrounds the connection opening. Since the supply of hydraulic fluid to the pressure chamber outside of this sealing seat takes place in this embodiment, thus initially no or at most a small force acts on the surface of the balance piston occluding the connection opening. Rather, the pressure is initially increased on the back of the balance piston, so that the Libra piston is pressed into the connection opening.
  • the pressure piston starts to move and thus pressure is also built up on a front side of the balance piston, the force built up on the back side of the balance piston is already higher, so that unintentional displacement of the balance piston and thus opening of the connection opening is avoided.
  • the pressure piston has a head element arranged in the pressure chamber.
  • the balance piston is arranged completely or at least partially within the head element.
  • the head element is designed such that it at least partially does not bear against the inside of the pressure chamber. This has the consequence that the hydraulic fluid flowing into the pressure chamber, in particular at the beginning of the injection process, can flow past the head element and initially flows via the feed channel into the chamber provided behind the scale piston in order to exert a corresponding force on the rear side of the balance piston.
  • the head element is cylindrical according to the pressure chamber and has a smaller diameter than the pressure chamber, so that between the inside of the pressure chamber and the head member, an annular gap is formed.
  • the return flow channel is arranged such that it connects the pressure chamber with the rear space with open balance piston.
  • the return flow channel is therefore preferably provided in the pressure piston. In this way, in particular a compact design can be realized. It is also advantageous to direct the fluid flowing back into the reservoir when the piston is pushed back into the rear space, since the rear space is preferably connected to the reservoir anyway. This is necessary because fluid, which is located in the back space, is pushed out of the back space of the piston during the injection process. This is done by a particular provided in the housing of the pressing tool return or channel that connects the back space with the reservoir.
  • the closed during the Verpressvorgangs of the pressure relief valve connecting channel is preferably arranged in a partition between the piston interior and a valve chamber.
  • the pressure relief valve is thus preferably arranged within the pressure piston.
  • the valve space is in this case that space in which the piston of the pressure relief valve is arranged.
  • opening the connecting channel by moving the piston of the pressure relief valve this is moved into the valve chamber.
  • the piston may have corresponding longitudinally extending grooves or channels or be arranged with a correspondingly large clearance or space in this space.
  • the pressure relief valve is in a preferred embodiment, a needle valve, so that a connecting channel can be provided with a small diameter. This is not detrimental here, since only small amounts of fluid have to flow through the connecting channel and, as a result, neither the efficiency is worsened nor the danger of blockage exists.
  • the balance piston has a pressure surface whose pressure-effective cross section is greater than the opening cross section of the connection opening. Due to this difference surface, the balance piston also remains in the closed position during an interruption of the pressing process.
  • FIG. 1 schematically the head portion of a forceps-like pressing tool is shown.
  • This has two pressing jaws 10, which are interconnected by a connecting element 12 and pivotable about bolts 14.
  • a connecting element 12 Depending on the configuration of the openings 16 on the two pressing jaws 10, compression of press fittings or other components can take place.
  • the recesses 16 or slightly differently shaped recesses can be used to connect them to the free end of the press loop and then to use the pressing tool to contract a press loop.
  • the closing of the pressing jaws 10 takes place with the aid of a particularly electrohydraulically driven pressure piston 18.
  • the pressure piston 18 is connected to a roller head 20.
  • the rollers of the roller head 20 come into contact with the flanks 24 of the pressing jaws 10, so that the in FIG. 1 left ends of the pressing jaws 10 are pressed apart. This results in a pivoting of the pressing jaws around the bolts 14 and thus closing the pressing jaws.
  • the pressing jaws 10 can be inserted into a housing 26 of the pressing tool and fixed by a retaining pin 28 in this.
  • the pressing jaws 10 are thus replaceable, so that different pressing jaws can be operated with the same pressing tool.
  • FIG. 2 the pressing tool is shown in longitudinal section, wherein the pressing jaws 10 are not inserted into the housing 26.
  • the piston 18 is arranged in a piston chamber 30, wherein the pressure piston 18 divides the piston chamber 30 in a pressure chamber 32 and a rear space 34.
  • the pressure chamber 32 is connected via a channel 36 with a hydraulic pump 38.
  • the hydraulic pump 38 delivers hydraulic fluid from a reservoir 40 through the channel 36 into the pressure chamber 32.
  • the hydraulic pump 38 is driven by means of a battery 42 and an intermediate gear 44.
  • the piston To divide the piston chamber 30 into the pressure chamber 32 and the pressure chamber 34, the piston has a plate-shaped projection 46, which is sealed in particular with the additional use of an annular sealing element 48 against an inner side 50 of the piston chamber 30.
  • about the channel 36 is a supply of fluid into the pressure chamber 32, so that the pressure increases therein and to carry out a pressing operation, the piston 18 from the in FIG. 3 shown initial position is moved to the right. After the conclusion of the pressing operation, the pressure piston 18 is moved back through a return spring 52 arranged in the rear space 34.
  • a designed as a needle valve pressure relief valve 54 is disposed in the interior of the piston 18.
  • a valve piston 56 of the pressure relief valve 54 has a needle 58 which closes a connecting channel 60, as long as the cut-off pressure has not yet been reached.
  • the closing of the connecting channel 60 by means of a compression spring 62, the bias can be adjusted by a screw 64.
  • a balance piston 68 is arranged inside a head element 66, which is part of the piston 18.
  • the balance piston 68 is displaceable in a piston interior 70.
  • the balance piston 60 closes a connection opening 72 and a return flow channel 74 arranged in the head element 66 and in the piston 18.
  • the head element 66 has a sealing seat 76 on an end face of the head element 66 arranged in the pressure space 32.
  • the sealing seat 76 cooperates with an annular projection 78 provided on the inner side 50 of the pressure chamber 32, so that a seal surrounding the connecting opening 32 is formed.
  • a feed channel 80 is provided through which fluid passes from the pressure chamber 32 into the piston interior 70.
  • the fluid passing through the feed channel 80 into the inner space 70 causes a pressure build-up in the inner space 70, which is on a rear side 82 of the balance piston 68 exerts a force by which the balance piston 68 closes the connection opening 72.
  • connection channel 60 of the pressure relief valve 54 is connected to the inner space 70.
  • the rear space 34 is connected in the illustrated embodiment via two returns 84 to the reservoir 40.
  • connection opening 72 since a pressure is already built up in the interior 70, this does not lead to the displacement of the balance piston 68 inwardly and thus not to open the connection opening 72. Further, since the effective pressure surface on the back of the balance piston 68 is greater than the cross section of the connection opening the force acting in the direction of the connection opening 72 is greater than the counterforce generated by the pressure in the pressure space 32, so that the connection opening 72 remains closed during the entire closing and pressing process.
  • the opening of the relief valve 54 causes a pressure drop in the piston interior 70. This reduces the force acting on the back 82, so that the now much higher, prevailing in the pressure chamber 32 pressure shifts the balance piston in the interior of the head member 66. As a result, the connection opening 72 as well as the remindströmkanale 74 is opened. Thus, hydraulic fluid can flow from the pressure chamber 32 into the back space 34 through the communication port 72 and the return flow passages 74 disposed in the head member 66 and the piston 18, respectively.
  • the pressing device is ready for the next pressing operation.
  • the position of the balance piston 68 may not yet correspond to that in FIG FIG. 3 position shown. However, this is ensured because at the beginning of the next injection process first hydraulic oil flows through the supply line 80 into the interior 70.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Press Drives And Press Lines (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (11)

  1. Appareil de pressage électrohydraulique, en particulier pour la fabrication de raccords de tuyaux au moyen d'éléments de montage par pressage et d'éléments de liaison par sertissage de l'électrotechnique, ledit appareil comprenant
    un piston de compression (80) qui est disposé dans une chambre de piston (30), qui agit sur des mâchoires de pressage (10) et qui divise la chambre de piston (30) en une chambre de compression (32) et une chambre arrière (34),
    une pompe hydraulique (38) destinée à délivrer un fluide hydraulique d'un réservoir (40) dans la chambre de compression (32),
    un ressort de rappel (52) qui est disposé dans la chambre arrière (34) et qui est destiné à repousser le piston (18) après l'opération de pressage et
    un clapet de surpression (54) qui est disposé dans le piston de compression (18) et qui ouvre un canal de liaison (60) entre une cavité de piston (70) et la chambre arrière (34) lorsqu'une pression d'arrêt est atteinte,
    caractérisé par
    un piston d'équilibrage (68) qui est disposé dans la cavité de piston (70) et qui ferme une ouverture de liaison (72) ménagée entre la cavité de piston (70) et la chambre de compression (32) ainsi qu'un canal d'écoulement de retour (74) lorsque la pression d'arrêt est atteinte.
  2. Appareil de pressage électrohydraulique selon la revendication 1, caractérisé en ce que la cavité de piston (70) est reliée à la chambre de compression (32) par l'intermédiaire d'un canal d'amenée (80) de sorte que, pour atteindre la pression d'arrêt, un côté arrière (82), opposé à l'ouverture de liaison (72), du piston d'équilibrage (68) est soumis à une pression de travail générée par la pompe hydraulique (38).
  3. Appareil de pressage électrohydraulique selon la revendication 2, caractérisé en ce que le côté arrière (82) du piston d'équilibrage (68) présente une surface de compression, dont la section transversale, efficace quant à la pression, est supérieure à la section transversale de l'ouverture de liaison (72).
  4. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 3, caractérisé en ce qu'un côté frontal (76), disposé dans la chambre de compression (32), du piston de compression (18) porte contre un siège d'étanchéité (78) de la chambre de compression (32) dans la chambre de compression (32) avant une montée en pression, le siège d'étanchéité (78) entourant l'ouverture de liaison (72).
  5. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 4, caractérisé en ce que le piston de compression (18) comporte un élément de tête (66) qui est disposé dans la chambre de compression (32) qui, au moins partiellement, ne porte pas contre un côté intérieur (50) de la chambre de compression (32).
  6. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 5, caractérisé en ce que le canal d'écoulement de retour (74) relie la chambre de compression (32) à l'espace arrière (34) lorsque le piston d'équilibrage (68) est ouvert.
  7. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 6, caractérisé en ce que la chambre arrière (34) est reliée au réservoir (40) par d'un conduit de retour (84).
  8. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 7, caractérisé en ce que le canal de liaison (60) est disposé dans une paroi de séparation entre la cavité de piston (70) et une chambre de clapet (86).
  9. Appareil de pressage électrohydraulique selon la revendication 8, caractérisé en ce qu'un piston de clapet (56) du clapet de surpression (54) est disposé de manière coulissante dans la chambre de clapet (86).
  10. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 9, caractérisé en ce que, lorsque la pression d'arrêt du piston d'équilibrage (68) est atteinte, l'ouverture de liaison (72) s'ouvre et le piston de compression (18) est ainsi ramenée en arrière automatiquement.
  11. Appareil de pressage électrohydraulique selon l'une des revendications 1 à 10, caractérisé en ce que le piston de compression est maintenu à la position qu'il occupe même en cas d'interruption de l'amenée de fluide hydraulique au cours de l'opération de pressage.
EP20120778337 2011-12-17 2012-10-24 Dispositif de serrage électrohydraulique Active EP2643125B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201120109251 DE202011109251U1 (de) 2011-12-17 2011-12-17 Elektrohydraulisches Pressgerät
PCT/EP2012/071040 WO2013087279A1 (fr) 2011-12-17 2012-10-24 Dispositif de serrage électrohydraulique

Publications (2)

Publication Number Publication Date
EP2643125A1 EP2643125A1 (fr) 2013-10-02
EP2643125B1 true EP2643125B1 (fr) 2014-05-14

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ID=47076235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120778337 Active EP2643125B1 (fr) 2011-12-17 2012-10-24 Dispositif de serrage électrohydraulique

Country Status (5)

Country Link
US (1) US9216501B2 (fr)
EP (1) EP2643125B1 (fr)
AU (1) AU2012351079B2 (fr)
DE (1) DE202011109251U1 (fr)
WO (1) WO2013087279A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746414A (zh) * 2018-06-01 2018-11-06 怀宁县恒源再生科技有限公司 一种钢铁铸件折弯机

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Publication number Priority date Publication date Assignee Title
DE202011109251U1 (de) 2011-12-17 2013-03-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Elektrohydraulisches Pressgerät
DE202015105803U1 (de) * 2015-11-02 2015-11-12 Fibro Gmbh Handpresse

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DE10216213A1 (de) * 2002-04-10 2003-10-23 Klauke Gmbh Gustav Elektrohydraulisches Verpressgerät und Verfahren zum Betreiben desselben
US5195354A (en) * 1989-03-31 1993-03-23 Japan Storage Battery Co., Ltd. Cam crank mechanism and motor driven hydraulic tool
DE19825160A1 (de) 1997-10-15 1999-04-22 Klauke Gmbh Gustav Hydraulisches Preßgerät und Verfahren zum Betreiben desselben
PT944937E (pt) * 1997-10-15 2002-07-31 Klauke Gmbh Gustav Dispositivo de pressao hidraulico
DE19944229B4 (de) * 1999-09-15 2016-07-28 Gustav Klauke Gmbh Hydraulisches Handpressgerät und auswechselbarer Gerätekopf hierfür
DE202004000215U1 (de) 2004-01-08 2004-04-01 Novopress Gmbh Pressen Und Presswerkzeuge & Co Kg Handgeführtes Preßgerät
DE102006003044B4 (de) * 2006-01-23 2015-10-08 Gustav Klauke Gmbh Hydraulisch angetriebenes Verpressgerät sowie Verfahren zum Verpressen eines Fittings
DE202006001889U1 (de) 2006-02-03 2007-03-08 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Antriebseinheit für ein Preßgerät
DE102006026552A1 (de) * 2006-06-08 2007-12-13 Gustav Klauke Gmbh Verfahren zum Betreiben eines hydraulischen Verpressgerätes sowie hydraulisches Verpressgerät mit einer Hydraulikpumpe
US8074485B2 (en) * 2008-07-08 2011-12-13 Tyco Electronics Corporation Tool head assemblies for pressing devices
DE202011109251U1 (de) 2011-12-17 2013-03-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Elektrohydraulisches Pressgerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746414A (zh) * 2018-06-01 2018-11-06 怀宁县恒源再生科技有限公司 一种钢铁铸件折弯机

Also Published As

Publication number Publication date
WO2013087279A1 (fr) 2013-06-20
AU2012351079A1 (en) 2014-07-03
EP2643125A1 (fr) 2013-10-02
US9216501B2 (en) 2015-12-22
DE202011109251U1 (de) 2013-03-18
US20150000369A1 (en) 2015-01-01
AU2012351079B2 (en) 2016-05-19

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