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EP1103349B2 - Outil de pressage et méthode de commande dudit outil - Google Patents

Outil de pressage et méthode de commande dudit outil Download PDF

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Publication number
EP1103349B2
EP1103349B2 EP00810910A EP00810910A EP1103349B2 EP 1103349 B2 EP1103349 B2 EP 1103349B2 EP 00810910 A EP00810910 A EP 00810910A EP 00810910 A EP00810910 A EP 00810910A EP 1103349 B2 EP1103349 B2 EP 1103349B2
Authority
EP
European Patent Office
Prior art keywords
pressing
value
clamping
piston
pressing 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.)
Expired - Lifetime
Application number
EP00810910A
Other languages
German (de)
English (en)
Other versions
EP1103349A3 (fr
EP1103349B1 (fr
EP1103349A2 (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
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Application filed by Von Arx AG filed Critical Von Arx AG
Publication of EP1103349A2 publication Critical patent/EP1103349A2/fr
Publication of EP1103349A3 publication Critical patent/EP1103349A3/fr
Publication of EP1103349B1 publication Critical patent/EP1103349B1/fr
Application granted granted Critical
Publication of EP1103349B2 publication Critical patent/EP1103349B2/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
    • 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 present invention relates to a method for controlling an electrically operated pressing tool device for pressing coupling elements with a clamping pliers.
  • Press tool devices of the type mentioned are used for pressing of coupling elements, such as press sleeves, press fittings, pipe sleeves, nested pipe sections and the like.
  • the press tool devices 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.
  • Press tools are implements that have an increased risk of accidents. There have already been several accidents at work in which the clamping forceps was thrown uncontrollably and the fork-shaped receptacle was spread and deformed.
  • pressing tool devices in which the final pressing position of the pressing jaws is monitored. Accordingly, the clamping tongs have means which perceive this final pressing position and forward it to a display device. Again, an information transfer from the clamp to the press tool must be done. In addition, appropriate electronic means must be integrated into the jaws in addition to also delicate mechanical elements.
  • EP-A-0'941'813 also shows a pressing tool of the type of interest here.
  • both the mechanical and the electrical detection of the clamping pliers is problematic. Therefore, a non-contact data transmission from the clamping tongs to the pressing tool was made contactless here by magnets interact in the clamping tongs with Erkennu ngssensoren the pressing tool.
  • the press tool 1 consists essentially of an electro-hydraulic device that is designed pistol-shaped.
  • the device has a housing 3 with a handle 4.
  • the release switch 5 is arranged, via which a pressing operation is triggered.
  • the accommodated in the housing 3 electromotive drive 6 acts via a gear 7 to a hydraulic pump 8, which presses hydraulic oil from a reservoir into the cylinder and thus moves the piston.
  • the piston / cylinder unit is designated overall by 10. It comprises the cylinder 11 and the piston 12 movable therein.
  • the piston 12 is engaged by a piston rod 13, which is guided through a two-part bearing 14.
  • a roller holder 15 is arranged on the piston rod 13.
  • the roller holder 15 has the shape of a yoke in which two rollers 16 are mounted.
  • the extension of the cylinder housing 11 is milled in the longitudinal direction and thus forms two cheeks 17, which form the fork-shaped receptacle 20.
  • the fork-shaped receptacle 20 is penetrated by a securing bolt 18.
  • a monitoring sensor 19 the correct position of the securing bolt 18 is monitored.
  • This safety pin 18 passes through the bearing plates or a connecting plate of the clamping jaw 2. To replace the clamping jaw 2 each of the safety pin 18 must be removed.
  • the clamping jaw 2 can be opened. If the rollers 16 move to the right on the ramp-like surfaces 25, the jaws 21 are pressed apart on this side of the pivot bearing 22 and pressed together on the other side, wherein the clamping space 26 is reduced, so that the tubular workpiece lying therein is compressed ,
  • a recess 27 is mounted in one of the two cheeks 17 of the fork-shaped receptacle 20, in which a sensor 28 determining the stroke is arranged.
  • This may be a magnetic sensor, a magnetoresistive angle sensor, a displacement sensor or a Hall sensor. In the present case, it is a displacement sensor, which is in corresponding operative connection with a magnetic strip 29, which is fastened on the reel holder 15.
  • the magnetic strip is a small plate. which is divided in a dense arrangement alternately strip-shaped in plus and minus poles.
  • magnetoresistive angle sensor When using a magnetoresistive angle sensor, this can be accommodated in the cylinder seal, through which the piston rod 13 is guided.
  • the piston rod can then be provided with magnetized regions, the magnetization directions being different.
  • the magnetoresistive angle sensor detects a vector corresponding to an absolute position of the piston rod. This preferred embodiment completely eliminates destruction in jaw replacement.
  • the number of signals detected during the first tongs closure is supplied to an electronic unit housed at 30 in the housing 3.
  • the electronic circuit contains a data memory, a comparator and possibly further conventional means for storing the desired path value on the one hand and inputting tolerance ranges below and / or above this and one arithmetic unit which compares the determined actual path values with the specified target path value and checks whether the actual travel value is within of the specified tolerance range.
  • the determination Sollwegwert represents a relative value, which is dependent on the Klemmzangentyp and even each individual clamping pliers, since such clamps also show signs of wear, whereby the tolerance would practically always be greater.
  • the clamps must either be replaced earlier or readjusted accordingly.
  • the actual closing path is determined by the empty closing as described in the citation and is newly recorded as a reference path value. Because neither mechanical scanning elements nor electronic data transmission elements are required on the clamping pliers themselves, the entire system is extremely insensitive in daily use and all suitable clamping pliers can be used and monitored.
  • FIG. 2 shows a second embodiment.
  • the second embodiment differs from the first described embodiment only with respect to the arrangement of the sensor and the type of the sensor.
  • a hollow cylindrical pin 31 is arranged. This fixed in the cylinder head 9 pin 31 protrudes into the piston 12 and the piston rod 13 in a blind hole.
  • the corresponding blind bore 32 is so large in diameter that the pin 31 can protrude without contact therein.
  • an enlarged bore 33 is arranged, in which a magnetic ring 34 is held fixed.
  • a straight or wound arranged wire is attached, which induces a signal during movement along the magnetic ring 34, which in turn is evaluated at the arranged at 30 electronic circuit.
  • the signal is proportional to the stroke of the piston.
  • the evaluation of the signal is exactly the same as in the solution described above.
  • the clamp itself determines the Sollhubweg and the corresponding tolerances can be programmed in the circuit from the manufacturer. The user has no access to the setpoint tolerance setting.
  • the control system disclosed here for monitoring the clamping tongs is not regulated by the pressure.
  • the hydraulic pressure is subject to considerable fluctuations, which are dependent on external influences, which are hardly considered.
  • the viscosity represents a significant parameter.
  • the viscosity of the hydraulic oil is also dependent on the temperature.
  • only one overpressure valve is present, which only switches when a certain safety value has been reached. This value can be relatively high above the possibly required compression pressure.
  • the pressure is in principle set so high that the pliers can safely close. Accordingly, this value is completely uncritical for the actual pressing. This is again a significant advantage of the inventive solution.
  • the electronic circuit in the pressing tool device can be switched so that the stored setpoint path value expires when the voltage on the pressing tool device disappears. This is to ensure that if the clamp is replaced while the power is off, it will not start from a wrong stored value when the power is turned on again. Although this would not be a tragedy, because then the input Sollwegwert either below, whereupon the device perceives this pressure as a new Leerpressung and store the value thus determined as a new Sollwegwert and also visually and / or acoustically identifies this process. However, it is certainly desirable that when resuming work after replacing the clamping pliers, a new Leerpressung or Vollverpressung takes place and this empty pressure is determined as a reference.
  • the changing of the clamping tongs can be monitored and deleted according to the stored Sollwegwert when removing the clamp. This can be done most simply by using the removal or replacement of the securing bolt 18 as information. This is completely unproblematic possible, because anyway the sensor 19 is present, which monitors the safety pin. Accordingly, the information of the sensor 19 only has to be logically coupled to the information of the sensor 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Automatic Assembly (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Surgical Instruments (AREA)
  • Press Drives And Press Lines (AREA)
  • Gripping On Spindles (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Claims (3)

  1. Procédé de commande d'un outil de pressage (1) à commande électrique pour le pressage d'éléments de couplage avec une pince de serrage (2), dans lequel l'outil de pressage déplace un piston à commande hydraulique (12) jusqu'à atteindre une pression prédéterminée et ferme ainsi la pince de serrage (2), caractérisé en ce qu'avec la pose ou le changement de la pince de serrage (2), la valeur de consigne de la course mémorisée s'éteint et ensuite l'outil de pressage (1, 5) est actionné pour exécuter une opération de pressage à vide, dans lequel la course, que le piston (12) accomplit jusqu'à atteindre une valeur de sécurité prédéterminée de la pression, qui se situe au-dessus de la pression de pressage nécessaire, est enregistrée et est comparée comme valeur de course de consigne jusqu'à des tolérances réglables avec chaque valeur de course effective de chaque opération de pressage ultérieure, dans lequel des écarts par rapport à la valeur de course de consigne activent un signal.
  2. Procédé suivant la revendication 1, caractérisé en ce que la valeur de course de consigne mémorisée s'éteint avec la disparition de la tension sur l'outil de pressage (1).
  3. Procédé suivant la revendication 2, caractérisé en ce qu'en cas de descente sous la valeur de course de consigne mémorisée, cette valeur plus basse est reconnue comme erreur de pressage et est signalée par voie optique et/ou acoustique.
EP00810910A 1999-11-24 2000-10-04 Outil de pressage et méthode de commande dudit outil Expired - Lifetime EP1103349B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH214899 1999-11-24
CH214899 1999-11-24

Publications (4)

Publication Number Publication Date
EP1103349A2 EP1103349A2 (fr) 2001-05-30
EP1103349A3 EP1103349A3 (fr) 2002-01-16
EP1103349B1 EP1103349B1 (fr) 2003-04-23
EP1103349B2 true EP1103349B2 (fr) 2006-07-26

Family

ID=4227007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810910A Expired - Lifetime EP1103349B2 (fr) 1999-11-24 2000-10-04 Outil de pressage et méthode de commande dudit outil

Country Status (5)

Country Link
US (1) US6662621B1 (fr)
EP (1) EP1103349B2 (fr)
AT (1) ATE238137T1 (fr)
DE (1) DE50001848D1 (fr)
ES (1) ES2193930T5 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100591484C (zh) * 2008-07-28 2010-02-24 浙江世进水控股份有限公司 电动液压式钳压装置
US8316685B2 (en) 2008-10-03 2012-11-27 Von Arx Ag Roller holding unit
EP3862136A1 (fr) * 2020-02-04 2021-08-11 Sofca S.r.l. Outil de montage de pinces de tuyau sur un tube

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100335193C (zh) 2001-09-11 2007-09-05 美国艾默生电气公司 夹紧组件
SE0200862D0 (sv) * 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
US7059166B2 (en) 2002-06-17 2006-06-13 Emerson Electric Co. Method and apparatus for assuring or determining appropriate closure of a crimp assembly
DE20315938U1 (de) * 2003-10-16 2005-02-24 Ipa Produktions- & Vertriebsges. M.B.H. Werkzeug zur Durchführung eines Verbindungsvorganges sowie Haltehülse
US20070251070A1 (en) * 2003-11-20 2007-11-01 Amherd Rene Roller Holder Unit
EP1781426B1 (fr) * 2004-08-26 2017-04-26 Von Arx AG Pistolet a aiguilles
US20080289394A1 (en) * 2007-05-23 2008-11-27 Emerson Electric Co. Compression jaw set with failure mode preventing reuse
DE202008002200U1 (de) 2008-02-15 2009-03-26 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Handgeführtes Pressgerät
CN102120319B (zh) * 2010-01-11 2013-01-02 张家港市创基机械设备制造有限公司 电动压接钳
DE202010015365U1 (de) * 2010-11-11 2012-02-15 Novopress Gmbh Pressen Und Presswerkzeuge & Co. Kg Prüfgerät
CN102480094A (zh) * 2010-11-29 2012-05-30 张家港市创基机械设备制造有限公司 用于压接装置的传动组件
CN102241010B (zh) * 2011-06-30 2012-10-24 苏州百泰柯机械有限公司 自动电动钳
EP2759356A4 (fr) * 2011-09-19 2016-03-16 Maksimov Consult Ad Dispositif et outillage d'élargissement à froid des trous de fixation
CN102363297A (zh) * 2011-10-09 2012-02-29 苏州百泰柯机械有限公司 一种由冲击扳手驱动的夹紧或剪切作业的工作头
CN102416603B (zh) * 2011-12-15 2013-01-30 苏州百泰柯机械有限公司 一种冲击式电动压接或剪切钳
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
EP3519139B1 (fr) * 2016-09-30 2023-03-01 Milwaukee Electric Tool Corporation Outil électrique
US10847944B2 (en) 2017-05-16 2020-11-24 Elpress Ab Method for monitoring a crimping process
NO344001B1 (en) * 2017-11-29 2019-08-12 Smart Installations As Method for cutting a tubular structure at a drill floor and a cutting tool for carrying out such method
CN108233120B (zh) * 2018-01-03 2020-06-09 安溪县雅池茶业有限公司 一种电源接口
DE102019217816B4 (de) 2018-11-29 2025-11-13 Ridge Tool Company Werkzeugköpfe für scherarbeiten
CN220783770U (zh) 2020-08-07 2024-04-16 米沃奇电动工具公司 在工具中使用的压接头
WO2023171496A1 (fr) * 2022-03-11 2023-09-14 株式会社村田製作所 Unité de détection de course de fonctionnement, commutateur de déclenchement et outil électrique
EP4279216A1 (fr) 2022-05-20 2023-11-22 Hilti Aktiengesellschaft Procédé de surveillance d'un processus de compression ou de sertissage

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US2910108A (en) * 1957-11-15 1959-10-27 Floyd M Fike Leaf spring re-arching tool
US4936126A (en) * 1988-05-17 1990-06-26 Daiichi Electric Co., Ltd. Press brake with a displacement sensor of electric signal output
EP0389716B1 (fr) * 1989-03-31 1994-05-18 Japan Storage Battery Company Limited Mécanisme à came et outil hydraulique motorisé
US5113679A (en) * 1990-06-27 1992-05-19 Burndy Corporation Apparatus for crimping articles
GB9323212D0 (en) * 1993-11-10 1994-01-05 British Nuclear Fuels Plc Device for cutting pipes or tubes
CH688470A5 (de) 1994-11-16 1997-10-15 Pamag Ag Presswerkzeug.
SE505162C2 (sv) * 1995-03-22 1997-07-07 Pressmaster Tool Ab Verktygshuvud
DE29602240U1 (de) * 1996-02-09 1997-06-19 Novopress GmbH Pressen und Presswerkzeuge & Co KG, 41460 Neuss Preßgerät
CH691527A5 (de) 1997-02-12 2001-08-15 Arx Ag Presswerkzeug mit elektronischer Sicherheitseinheit
DE29703052U1 (de) * 1997-02-21 1997-04-03 Novopress GmbH Pressen und Presswerkzeuge & Co KG, 41460 Neuss Preßgerät zum Verbinden von Werkstücken
EP0941813B1 (fr) * 1998-03-10 2003-10-29 Ridge Tool Ag Outil de presse et procédé pour sertir les raccords de tubes
DE19814202A1 (de) * 1998-03-31 1999-10-07 Gaenslein Hans Guenther Hydraulische Kabelpresse
CH690063A5 (de) * 1999-02-11 2000-04-14 Arx Ag Presswerkzeug.
DE10000868C2 (de) * 2000-01-12 2002-09-19 Franz Viegener Ii Gmbh & Co Kg Presswerkzeug und Verfahren zum Eichen eines Presswerkzeuges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100591484C (zh) * 2008-07-28 2010-02-24 浙江世进水控股份有限公司 电动液压式钳压装置
US8316685B2 (en) 2008-10-03 2012-11-27 Von Arx Ag Roller holding unit
EP3862136A1 (fr) * 2020-02-04 2021-08-11 Sofca S.r.l. Outil de montage de pinces de tuyau sur un tube

Also Published As

Publication number Publication date
EP1103349A3 (fr) 2002-01-16
DE50001848D1 (de) 2003-05-28
EP1103349B1 (fr) 2003-04-23
ATE238137T1 (de) 2003-05-15
EP1103349A2 (fr) 2001-05-30
ES2193930T3 (es) 2003-11-16
ES2193930T5 (es) 2007-04-01
US6662621B1 (en) 2003-12-16

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