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EP0599709A1 - Plasma-Schneidbrenner - Google Patents

Plasma-Schneidbrenner Download PDF

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Publication number
EP0599709A1
EP0599709A1 EP93402814A EP93402814A EP0599709A1 EP 0599709 A1 EP0599709 A1 EP 0599709A1 EP 93402814 A EP93402814 A EP 93402814A EP 93402814 A EP93402814 A EP 93402814A EP 0599709 A1 EP0599709 A1 EP 0599709A1
Authority
EP
European Patent Office
Prior art keywords
torch
series
passages
passage
nozzle
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.)
Granted
Application number
EP93402814A
Other languages
English (en)
French (fr)
Other versions
EP0599709B2 (de
EP0599709B1 (de
Inventor
Michel Delzenne
André Borne
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.)
Lincoln Electric Company France SA
Original Assignee
La Soudure Autogene Francaise
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9435735&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0599709(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by La Soudure Autogene Francaise filed Critical La Soudure Autogene Francaise
Publication of EP0599709A1 publication Critical patent/EP0599709A1/de
Application granted granted Critical
Publication of EP0599709B1 publication Critical patent/EP0599709B1/de
Publication of EP0599709B2 publication Critical patent/EP0599709B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/34Details, e.g. electrodes, nozzles
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/24Generating plasma
    • H05H1/26Plasma torches
    • H05H1/32Plasma torches using an arc
    • H05H1/34Details, e.g. electrodes, nozzles
    • H05H1/3489Means for contact starting

Definitions

  • the present invention relates to plasma cutting torches, of the type comprising a torch body comprising an electrode and a nozzle, and means for mounting and connecting the torch body.
  • Plasma cutting torches conventionally comprise a one-piece torch body with, at the rear, connections to pipes for supplying fluid and electrical energy and means for fixing to a frame or a working machine, and, to the front, means for mounting the electrode and the nozzle.
  • the disassembly of these torches, for maintenance operations or replacement of worn or defective parts, requires delicate and long disassembly and reassembly operations, which immobilize the production machine for a significant time and which most often require make new torch positioning adjustments before restarting production.
  • the object of the present invention is to propose a new torch architecture, of modular design, allowing rapid and easy replacement of the torch body and / or of its constituent elements and eliminating the problems of re-adjustment of positioning after reassembly.
  • the torch comprises a torch support defining a first series of fluid passages connectable to respective circuits for supplying said fluids and a first support face, a unitary body of torch comprising the electrode and the nozzle and comprising a second series of fluid passages and a second bearing face, and quick assembly means for assembling the torch body assembly and the torch support with the first and second bearing faces in axial bearing against one another and with the passages of the first series communicating with the respective passages of the second series.
  • a plasma cutting torch generally comprises a torch support A, intended to be mounted on a machine frame and on one end of which is mounted a unitary assembly of torch body B, the torch support A comprising, at its opposite end, a series C of elements for connection to fluid pipes and to power lines.
  • the torch support A comprises a metal block 1, typically made of brass, comprising a succession of stepped bores of different diameters 2, 3, 4, 5 and surrounded by a insulating jacket 6.
  • a metal block 1 typically made of brass
  • In the larger diameter bore 2 open a supply passage of cooling gas 7 and an actuating gas supply passage 8.
  • the connection between the bores 2 and 3 forms a transverse annular face 9 into which opens a supply passage of a second actuation gas 10.
  • In the bore 3 opens a passage 11 for supplying a third actuating gas.
  • an electrical contact socket 5 the bore 4 communicating with a tube T for supplying plasma gas.
  • the support A comprises, at its front end, a metal sleeve 12 isolated from the block 1 and comprising an external thread 13.
  • the torch body B comprises a metallic tubular assembly 14 comprising a rear part forming a piston 15 sliding in an internal bore 16 of a metallic tubular jacket 17 provided with peripheral seals and intended to be received in the first bore 2 of the torch support A.
  • the jacket 17 is secured to a lower skirt assembly 18, the upper end of which forms a collar 19 extending radially outwards.
  • On the lower end of the skirt assembly 18 is mounted a cap 20.
  • the tubular assembly 14 is extended towards the rear by a stepped cylindrical part intended to be received with sealing in the rear bores 3 and 4 of the support of torch A.
  • the rear end of the jacket 17 forms an annular bearing surface 21 bearing against the annular face 9 of the torch support A.
  • tubular assembly 14 In the tubular assembly 14 is tightly mounted a tubular element 22 enclosing a spring 23 urging downward a piston 24 sliding in leaktight manner in the tubular element 22 and integral with a hollow rod 25 extending in leaktight sliding in the tubular element 22 and in a tubular extension 33 of the assembly 14, and carrying, at its lower end, a clamp structure with flexible longitudinal tabs 26 forming means for locking and holding a hollow electrode tail 27 carrying at its lower end Erieure a hollow electrode 28.
  • the clamp structure 26 cooperates with an outer tubular clamp lock 29 slidably mounted on the rod 25 and resiliently biased downward by a spring 30.
  • the lock 29 comprises at least one transverse projection 31 passing through a oblong opening 32 formed in the tubular extension 33 of the assembly 14 and carrying, at its lower end, a clamp structure 34 with flexible longitudinal tongues cooperating with a peripheral elastic ring 35 and forming means for holding and blocking a nozzle 36 in which the electrode 28 extends and provided centrally with a jet ejection channel plasma 37.
  • the plasma gas introduced into the bore 4 passes centrally through the torch body B as far as the electrode 28 from where it passes inside the nozzle 36.
  • the cooling gas introduced into the passage 7 enters, through transverse openings 38 in the jacket 17 to flow into the skirt 20, around the nozzle 36.
  • a locking gas, introduced through the passage 8 enters through openings transverse 39, in the bore 16 to push the piston 15 upwards and maintain the clamps 26 and 34 in the engagement configuration of the electrode tail 27 and the nozzle 36, respectively.
  • the upper part 40 of the assembly 14 forms, in the bore 3, an unlocking piston which, when unlocking gas is introduced into the bottom of the bore 3 through the passage 11, pushes the assembly 14 towards the bottom, thus freeing the clamp structure 34 from the ring 35 and allowing the extraction of the nozzle 36.
  • the projections 31 come into abutment on an internal shoulder 41 of the jacket 17, thus releasing the clamp 26 and allowing the release of the electrode 28.
  • the electrode 28 is normally kept pressed against the bottom of the nozzle 36 by the spring 23.
  • priming gas is introduced through passage 10 and enters, through transverse passages, 42 between assembly 14 and assembly 22 into an annular chamber 43 in front of piston 24 to repel this last against spring 23 and ec arter thus the electrode 28 of the nozzle 36 to, in a first time, strike the arc and, thereafter, allow the escape of the plasma gas from inside the nozzle 36 towards the outside, by the passage 37.
  • the torch body B is kept locked on the support A by a nut 70 cooperating with the flange 19 and screwed onto the thread 13 of the support A, a simple unscrewing of the nut D allowing the torch body assembly B to be extracted for a quick replacement of the latter.
  • the insulating casing 6 and the metal block 1 of the torch support A which has, here, a flat transverse underside 9 forming support for the bottom 21 of a cage to balls 45 forming the rear end of a block 46 of the torch body B which encloses a hollow electrode structure 280 projecting towards the rear and on the lower or front end of which is mounted the nozzle 36 surrounded, here , in a sealed manner by a skirt 20 'defining a part of a water cooling circuit, the water being introduced into a longitudinal passage 47 in the block 1, passing through a passage 48, aligned with the passage 47, in the block 46, as far as the cap 20 ′ to pass, via transverse passages 49, inside the electrode structure 280 and exit towards the top of block 1 by an outlet passage 50.
  • the electrode structure 280 extends upwards, beyond face 21, in a central stepped bore 51 of the block 1 comprising an electrical contact socket 52.
  • the electrode structure 280 further forms an intermediate piston structure 53 sliding in a central bore of the block 46, the front face of the piston 53 receiving, by aligned passages 54 in block 1 and 55 in block 46, a priming gas to separate the electrode 280 from the nozzle 36, a defusing gas being introduced, by a through passage, at 56, on the rear face of the piston 53 to bring back, at the end of use and at the start of reuse, the electrode 280 in contact with the nozzle 36 where the plasma gas arrives by passages opening radially, at 57, in the nozzle 36.
  • the fluid passages, such as 48 and 55, of the torch body B have sockets, such as 58 and 59, protruding beyond the face 21 and received sealed in the corresponding passages, such as 54, of the torch support.
  • the sleeve 58 of the cooling water supply circuit cooperates with a hollow rod 60 disposed in the water supply passage 47 to push back, in use, a shutter valve 61 resiliently biased in the closed position.
  • the water exhaust passage 50 comprises, at the outlet, a valve 62 normally urged elastically towards its closed position and open, in the assembled configuration, by the hollow upper end of the electrode structure 280. From this way, by disconnecting the torch body B from the torch support A, the valves 61 and 62 close again, thus avoiding the flow of water from the torch support A.
  • the cage 45 carries at least one ball 63 intended to cooperate, in the locking position, with an annular groove 64 formed at the periphery of the cylindrical front end of the block 1 and with a cylindrical sliding lock 65, forming a ramp, disposed in a chamber at the front end of the insulating casing 6 and biased in the locking position by a spring 66.
  • the torch body B comprises a sliding pusher 67 making it possible to reverse the lock 65 , against spring 66, during installation, by simple plugging in, and extraction of the torch body B.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)
EP93402814A 1992-11-20 1993-11-19 Plasma-Schneidbrenner Expired - Lifetime EP0599709B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9213955A FR2698301B1 (fr) 1992-11-20 1992-11-20 Torche de coupage plasma.
FR9213955 1992-11-20

Publications (3)

Publication Number Publication Date
EP0599709A1 true EP0599709A1 (de) 1994-06-01
EP0599709B1 EP0599709B1 (de) 1997-06-04
EP0599709B2 EP0599709B2 (de) 2005-04-06

Family

ID=9435735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402814A Expired - Lifetime EP0599709B2 (de) 1992-11-20 1993-11-19 Plasma-Schneidbrenner

Country Status (7)

Country Link
US (1) US5409164A (de)
EP (1) EP0599709B2 (de)
JP (1) JPH06198450A (de)
AU (1) AU671492B2 (de)
DE (1) DE69311271T3 (de)
ES (1) ES2102624T5 (de)
FR (1) FR2698301B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021339A1 (en) * 1995-01-04 1996-07-11 Hypertherm, Inc. Alignment device and method for a plasma arc torch system
EP0820216A1 (de) * 1996-07-18 1998-01-21 TRAFIMET S.p.A. Hochfrequenz-zündloser Plasmabrenner, mit Luftkühlvorrichtungen der Elektroden
EP0901867A2 (de) * 1998-10-22 1999-03-17 La Soudure Autogene Francaise Verfahren und automatische Vorrichtung zum Signieren durch Plasma, insbesondere von Metallen
AT406243B (de) * 1998-01-28 2000-03-27 Inocon Technologie Gmbh Gerät mit einem plasmaerzeuger
EP1117279A1 (de) * 2000-01-17 2001-07-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plasmabrenner mit Kopf, Elektrode und Düse-Identifikationssystem
EP1139701A1 (de) * 2000-03-30 2001-10-04 La Soudure Autogene Francaise Plasmabrenner mit Elektrode/Düse-Kontaktstarter
EP2063689A1 (de) 2007-11-20 2009-05-27 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Silberlegierungselektrode für Plasmabrenner
EP2293655A1 (de) 2009-09-03 2011-03-09 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Schwimmend befestigter Multifunktionsring für Plasmabrenner
EP2292366A1 (de) 2009-09-04 2011-03-09 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Plasmabrenner mit einem durch eine Trapezgewinde abnehmbaren Brennerkopf
FR2950218A1 (fr) * 2009-09-11 2011-03-18 Air Liquide Welding France Torche a plasma a tete demontable a matrice interne metallique
EP3157308A1 (de) 2015-10-15 2017-04-19 Air Liquide Welding France Elektrischer lichtbogenschweissbrenner oder -schneidegerät mit schnellmontagesystem
CN107073625A (zh) * 2014-07-23 2017-08-18 海别得公司 在热处理系统中配置信号设备

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872300A1 (de) * 1995-01-31 1998-10-21 Komatsu Ltd. Bearbeitungsschweissbrenner
US5897795A (en) * 1996-10-08 1999-04-27 Hypertherm, Inc. Integral spring consumables for plasma arc torch using blow forward contact starting system
US6969819B1 (en) * 2004-05-18 2005-11-29 The Esab Group, Inc. Plasma arc torch
JP5432299B2 (ja) * 2006-10-18 2014-03-05 コマツ産機株式会社 プラズマ切断装置およびプラズマトーチの冷却方法
US8258423B2 (en) * 2009-08-10 2012-09-04 The Esab Group, Inc. Retract start plasma torch with reversible coolant flow
US9462670B2 (en) * 2010-07-16 2016-10-04 Hypertherm, Inc. Diffuser shape vent slots in a hand torch shield castellation
US20120031881A1 (en) * 2010-08-09 2012-02-09 The Esab Group, Inc. Blow-Back Plasma Arc Torch With Shield Fluid-Cooled Electrode
US8283594B2 (en) 2010-08-09 2012-10-09 The Esab Group, Inc. System and method for supplying fluids to a plasma arc torch
US11783138B2 (en) 2012-04-04 2023-10-10 Hypertherm, Inc. Configuring signal devices in thermal processing systems
US11432393B2 (en) 2013-11-13 2022-08-30 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US9981335B2 (en) 2013-11-13 2018-05-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11684995B2 (en) 2013-11-13 2023-06-27 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US11278983B2 (en) 2013-11-13 2022-03-22 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US10456855B2 (en) 2013-11-13 2019-10-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
DE102014009308A1 (de) * 2014-06-26 2015-12-31 Iht Automation Gmbh & Co. Kg Schweiß- oder Schneidwerkzeug
AU2015301727B2 (en) 2014-08-12 2020-05-14 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
CN108141948B (zh) * 2015-08-04 2021-08-10 海别得公司 用于液体冷却的等离子弧焊炬的筒
EP3332615B1 (de) 2015-08-04 2022-04-13 Hypertherm, Inc. Verbesserte plasmalichtbogenschneidsysteme, verbrauchsmaterialien und betriebsverfahren
US10413991B2 (en) 2015-12-29 2019-09-17 Hypertherm, Inc. Supplying pressurized gas to plasma arc torch consumables and related systems and methods
CN114667804A (zh) * 2019-11-19 2022-06-24 海别得公司 在等离子弧炬中在压力下分离可消耗品的系统和方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2091594A (en) * 1981-01-28 1982-08-04 Eutectic Corp Plasma transferred arc torch
FR2527891A1 (fr) * 1982-05-28 1983-12-02 Innovations Sous Marines Et Perfectionnement aux canons a plasma

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960594A (en) * 1958-06-30 1960-11-15 Plasma Flame Corp Plasma flame generator
DE1565638A1 (de) * 1967-06-12 1970-04-16 Kjellberg Elektroden & Maschin Plasmabrenner
US4363443A (en) * 1980-09-26 1982-12-14 Eutectic Corporation Gas-torch construction
US4369919A (en) * 1980-10-31 1983-01-25 Npk Za Kontrolno Zavarachni Raboti Plasma torch for processing metals in the air and under water
US4688722A (en) * 1984-09-04 1987-08-25 The Perkin-Elmer Corporation Nozzle assembly for plasma spray gun
US4756686A (en) 1987-01-16 1988-07-12 Wingaersheek Div. Of Victor Equipment Company Torch handle with locking valve
FR2626206B1 (fr) 1988-01-25 1990-05-18 Soudure Autogene Francaise Torche et machine de travail a l'arc, et cartouche pour cette torche
US4919334A (en) * 1989-01-19 1990-04-24 Dynaquip Controls Corporation Blow gun assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2091594A (en) * 1981-01-28 1982-08-04 Eutectic Corp Plasma transferred arc torch
FR2527891A1 (fr) * 1982-05-28 1983-12-02 Innovations Sous Marines Et Perfectionnement aux canons a plasma

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021339A1 (en) * 1995-01-04 1996-07-11 Hypertherm, Inc. Alignment device and method for a plasma arc torch system
US5624586A (en) * 1995-01-04 1997-04-29 Hypertherm, Inc. Alignment device and method for a plasma arc torch system
EP0820216A1 (de) * 1996-07-18 1998-01-21 TRAFIMET S.p.A. Hochfrequenz-zündloser Plasmabrenner, mit Luftkühlvorrichtungen der Elektroden
AT406243B (de) * 1998-01-28 2000-03-27 Inocon Technologie Gmbh Gerät mit einem plasmaerzeuger
US6080955A (en) * 1998-01-28 2000-06-27 Inocon Technologie Gesellschaft M.B.H. Plasma producer with a holder
EP0901867A2 (de) * 1998-10-22 1999-03-17 La Soudure Autogene Francaise Verfahren und automatische Vorrichtung zum Signieren durch Plasma, insbesondere von Metallen
EP0901867A3 (de) * 1998-10-22 1999-03-24 La Soudure Autogene Francaise Verfahren und automatische Vorrichtung zum Signieren durch Plasma, insbesondere von Metallen
US6236013B1 (en) 1998-10-22 2001-05-22 La Soudure Autogene Francaise Combined process and automatic installation for plasma-jet marking and cutting or welding, in particular of metals
EP1117279A1 (de) * 2000-01-17 2001-07-18 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Plasmabrenner mit Kopf, Elektrode und Düse-Identifikationssystem
FR2803978A1 (fr) * 2000-01-17 2001-07-20 Air Liquide Torche a plasma avec systeme d'identification de la tete, de l'electrode ou de la tuyere
EP1139701A1 (de) * 2000-03-30 2001-10-04 La Soudure Autogene Francaise Plasmabrenner mit Elektrode/Düse-Kontaktstarter
FR2807283A1 (fr) * 2000-03-30 2001-10-05 Soudure Autogene Francaise Torche a plasma avec amorcage par contact entre l'electrode et la tuyere
EP2063689A1 (de) 2007-11-20 2009-05-27 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Silberlegierungselektrode für Plasmabrenner
EP2293655A1 (de) 2009-09-03 2011-03-09 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Schwimmend befestigter Multifunktionsring für Plasmabrenner
EP2292366A1 (de) 2009-09-04 2011-03-09 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Plasmabrenner mit einem durch eine Trapezgewinde abnehmbaren Brennerkopf
FR2949697A1 (fr) * 2009-09-04 2011-03-11 Air Liquide Torche plasma a tete demontable avec bague a filetage trapezoidal
FR2950218A1 (fr) * 2009-09-11 2011-03-18 Air Liquide Welding France Torche a plasma a tete demontable a matrice interne metallique
CN107073625A (zh) * 2014-07-23 2017-08-18 海别得公司 在热处理系统中配置信号设备
CN107073625B (zh) * 2014-07-23 2020-09-01 海别得公司 在热处理系统中配置信号设备
EP3157308A1 (de) 2015-10-15 2017-04-19 Air Liquide Welding France Elektrischer lichtbogenschweissbrenner oder -schneidegerät mit schnellmontagesystem
FR3042430A1 (fr) * 2015-10-15 2017-04-21 Air Liquide Welding France Torche de soudage ou de coupage a l'arc electrique avec systeme d'assemblage rapide
US10543559B2 (en) 2015-10-15 2020-01-28 Lincoln Global, Inc. Electric arc cutting or welding torch with rapid assembly system

Also Published As

Publication number Publication date
DE69311271T3 (de) 2005-12-29
ES2102624T5 (es) 2005-10-16
EP0599709B2 (de) 2005-04-06
EP0599709B1 (de) 1997-06-04
DE69311271D1 (de) 1997-07-10
FR2698301B1 (fr) 1994-12-23
DE69311271T2 (de) 1997-10-30
JPH06198450A (ja) 1994-07-19
AU5075893A (en) 1994-06-02
AU671492B2 (en) 1996-08-29
US5409164A (en) 1995-04-25
ES2102624T3 (es) 1997-08-01
FR2698301A1 (fr) 1994-05-27

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