EP1784275A1 - Procede et dispositif de nettoyage de chalumeaux de soudage au moyen de glace carbonique - Google Patents

Procede et dispositif de nettoyage de chalumeaux de soudage au moyen de glace carbonique

Info

Publication number
EP1784275A1
EP1784275A1 EP05747660A EP05747660A EP1784275A1 EP 1784275 A1 EP1784275 A1 EP 1784275A1 EP 05747660 A EP05747660 A EP 05747660A EP 05747660 A EP05747660 A EP 05747660A EP 1784275 A1 EP1784275 A1 EP 1784275A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
burner
tube
snow
liquid
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.)
Withdrawn
Application number
EP05747660A
Other languages
German (de)
English (en)
Inventor
Jürgen Von Der Ohe
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE102004063473A external-priority patent/DE102004063473B4/de
Application filed by Individual filed Critical Individual
Publication of EP1784275A1 publication Critical patent/EP1784275A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B23K9/328—Cleaning of weld torches, i.e. removing weld-spatter; Preventing weld-spatter, e.g. applying anti-adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2

Definitions

  • the invention relates to a method and a device for cleaning welding torches in automated welding lines, on welding robots and in individual production. 10
  • Various methods for cleaning welding torches are known. There are processes based on mechanical cleaning. One or more wire brushes, different milling tools or form cutters are used.
  • the disadvantage here is that only the outer area of the gas nozzle and part of the contact tube can be cleaned with these tools. The splash and flue gas deposits inside the burner and the blown-in release agents are not completely removed. With conical gas nozzles, the inside of the gas nozzle cannot be cleaned with this technology.
  • Another disadvantage has been the circular design of the burner 20 due to the necessary rotational movement of the tools, since it prevents the torch shape from being adapted to the seam or point area.
  • JP 07314142 A describes a technology which is intended to prevent the 45 splashes from adhering. For this purpose, a release agent is sprayed onto the cold torch before the welding process.
  • the invention specified in claim 1 to 3 is based on the problem of creating a cleaning method and a device for the contactless cleaning of welding torches, regardless of whether it is a single or multi-wire torch.
  • This problem is solved according to claims 1 to 3, by a method for cleaning welding torches, for example in automatically operating robot cells, using a cold blasting medium, preferably C0 2 - snow, which is blown uniformly or at intervals onto the surface to be cleaned and through a Forced guidance is guided past the surface to be cleaned, whereby the special cleaning head is moved linearly on the axis of the contact tube.
  • the device for performing the method consists of a, depending on the outer diameter of the contact tube and the inner diameter of the gas nozzle, cleaning sleeve, which can be moved either linearly or at a certain angle to the welding torch, on the common axis of the contact tube and cleaning head ,
  • the pressure of approx. 50 bar required to maintain the liquid phase of the C0 2 in the riser bottle or in the tank is used directly.
  • the pressurized liquid C0 2 is blown into the cleaning sleeve through one or more nozzles at the bottom of the cleaning sleeve, whereby the angle of inflow can be different, uniformly or at one or more short intervals.
  • the C0 2 snow created when the liquid C0 2 is released is immediately used for cleaning, ie for subcooling the adhering weld spatter, while at the same time being slightly compressed due to the positive guidance in the cleaning sleeve.
  • the compression is achieved by increasing the volume when relaxing and by limiting the expansion range through the inside diameter of the cleaning sleeve. So that the compression of the C0 2 snow does not lead to clogging of the cleaning sleeve, a certain ratio of the nozzle cross section to the inside diameter of the cleaning sleeve must be maintained. When using riser tubes below room temperature, the ratio 1:13 has proven to be favorable. The large mass differences between the contact tube and the gas nozzle relative to the welding spatter cause a more rapid cooling of the splash and the associated 'shrinkage, peeling of the splashes. To compensate for pressure in the cleaning sleeve when releasing the liquid C0 2 , the cleaning sleeve can be provided with side holes.
  • the welding torch is cleaned in at least two stages.
  • the adapted cleaning head with the cleaning sleeve is at a distance in front of the gas nozzle depending on the outer diameter of the gas nozzle.
  • the gas outlet opening of the gas nozzle is cleaned by briefly applying C0 2 snow.
  • the welding torch then moves the contact tube into the cleaning sleeve and the gas nozzle over the cleaning sleeve.
  • the outer area of the contact tube and the inner area of the gas nozzle are cleaned with a further C0 2 pulse and forced guidance due to the cleaning position.
  • the advantage of the invention is that through the use of cold blasting technology, in particular through the use of C0 2 snow and one Cleaning sleeve adapted to the burner, the burner can be cleaned contact-free and without additional clamping processes, which cause the burner to be displaced and can therefore be the cause of incorrect welding. Due to the C0 2 snow, the limited cooling and loosening of the impurities takes place, mainly due to the thermoelectric voltage. while the C0 2 snow air flow caused by the phase transition and favored by the forced guidance through the cleaning sleeve flushes the dissolved impurities outwards. Another advantage of the invention is that there is no direct contact with the welding torch due to the use of C0 2 snow or the cold blasting technique and thus the surface of the welding torch is not damaged or worn away.
  • non-contact cleaning allows the torch shape to be adapted much better to the corresponding welding task and thus simplifies or enables welding in grooves, corners or in narrow areas.
  • a further development of the invention consists in the fact that, in the case of fixed welding torches, the cleaning device is mounted on a slide and the method is implemented by the slide in the individual cleaning positions.
  • the liquid C0 2 is carried inside the wall of the cleaning sleeve directly up to the gas nozzle and is blown immediately onto the end face of the gas nozzle when relaxing.
  • the cleaning is carried out with two separate cleaning sleeves.
  • the gas nozzle encloses one or more contact tubes.
  • the liquid C0 2 is directed from a ring of small nozzles directly onto the end face of the gas nozzle with different flow angles.
  • the rim is adapted to the contour of the gas nozzle.
  • the contact tube or tubes is cleaned, the burner being guided by the robot in such a way that the cleaning sleeve is guided evenly over the contact tube to be cleaned.
  • a further embodiment of the solution according to the invention is rice. and blow out the burner from behind.
  • the cleaning sleeve is moved directly over the contact tube and the liquid, pressurized, C0 2 is guided to the front in the wall of the cleaning sleeve. Due to the expansion pressure, the C0 2 snow is directed onto both the gas nozzle and the contact tube. Holes in the cleaning sleeve allow the C0 2 snow to flow out and prevent back pressure.
  • this variant of burner cleaning can also be carried out in two stages. The gas nozzle outlet opening is cleaned in the first stage and the interior of the burner is cleaned in the second stage. It is obvious that the material, the filler material and the welding parameters have an influence on the shape and size of the weld spatter. This also requires the cleaning device to be adapted to the specified working conditions. This adjustment consists in a remote version of the cleaning sleeve.
  • FIG. 1 shows the structure of a cleaning device for single-wire burners
  • Figure 2 Construction of a cleaning station for multi-wire burners (tandem burner)
  • Figure 3 Interchangeable cleaning sleeve with inner holes for targeted guidance of the liquid C0 2
  • Liquid C0 2 is fed from a C0 2 liquid tank 1 to the valve 3 via a pressure line 2.
  • a measuring device 4 for checking the liquid C0 2 level.
  • the valve 3 is connected directly to the cleaning head 5.
  • the cleaning head 5 is held in the housing 7 by the nut 6.
  • the cleaning tube 8 is positioned by the union nut 9.
  • the welding torch 10 is moved from the working position into the starting position 11 and aligned so that the contact tube 12 and the gas nozzle 13 lie together with the cleaning tube 8 on the center line .14. After the alignment, the welding torch 10 moves from the initial position 11 into the first cleaning position 18.
  • the robot gives the signal 16 to open the valve 3 ,
  • the liquid C0 2 flows through the nozzle openings 17 into the cleaning tube 8 and relaxes with simultaneous slight compression to form C0 2 snow which is blown onto the outlet opening of the gas nozzle 13 by the pressure in the bottle 1.
  • the necessary pressure equalization is achieved through the equalizing holes 20.
  • the welding torch 10 moves from the first cleaning position 18 to the second cleaning position 19.
  • the contact tube 12 moves in and the gas nozzle 13 via the cleaning tube 8.
  • the signal 16 the valve 3 opened and again C0 2 snow blown into the cleaning tube 8.
  • the CO 2 snow is forced past the contact tube 12 and the inner surface of the gas nozzle 13.
  • the welding torch 10 moves back to the starting position 11 and from there to the working position.
  • Liquid C0 2 is fed from a C0 2 liquid tank 1 to the valve 3 via a pressure line 2.
  • a measuring device 4 for checking the liquid C0 2 level.
  • the valve 3 is connected directly to the cleaning head 5.
  • the cleaning head 5 is held in the housing by the nut 6.
  • the cleaning tube 8 is positioned by the union nut 9.
  • the tandem burner 21 is moved from the working position into the starting position 22 and aligned so that the center line 23 of the tandem burner 21 coincides with that of the cleaning tube 8. From this position, the tandem burner 21 is pivoted through the angle 24, so that the contact tube 25, together with the cleaning tube 8, lies on the center line 14. After alignment, the swiveled tandem burner 21 moves from the starting position 22 into the first cleaning position 26.
  • the robot gives the signal 16 to open the valve 3.
  • the liquid CO 2 flows through the nozzle openings 17 into the cleaning tube 8 and relaxes with simultaneous slight compression into CO 2 snow which is blown onto the outlet opening of the gas nozzle 27 by the pressure in the bottle 1.
  • the necessary pressure equalization is achieved through the equalizing holes 20. If part of the outlet opening of the gas nozzle 27 is cleaned, the tandem burner 22 moves from the first cleaning position 26 to the second cleaning position 28.
  • the contact tube 25 moves in and the gas nozzle 27 via the cleaning tube 8.
  • the signal 16 the valve 3 opened and again C0 2 snow blown into the cleaning tube 8.
  • the C0 2 snow is forcibly guided past the contact tube 25 and the inner surface of the gas nozzle 27 through the contact tube 25 inserted into the cleaning tube 8.
  • the tandem burner 21 moves back into the starting position 22.
  • the tandem burner 21 is pivoted in this position by the angle 24 into the starting position and further by the same angle 24 so that the contact tube 29 with the Cleaning pipe 8 is located on the same center line 14.
  • the cleaning is carried out in the same way as for the contact tube 25.
  • the tandem burner moves back to the starting position 22, swivels through the angle 24 back into the starting position and from there into the working position.
  • the cleaning tube with inner bores 30 is placed on the cleaning head 5 in Example 1 and positioned in position by the enlarged union nut 34.
  • the welding torch 10 either moves to the first position 18 for cleaning the gas outlet opening of the gas nozzle 13, the liquid C0 2 directly in front of the gas nozzle 13 from the inner bores 31 of the cleaning tube with inner bores 30 to form C0 2 -Snow is blown onto the gas outlet opening or immediately into the second cleaning position 19, where, by the positive guidance of the C0 2 snow, which is influenced by the, depending on the material and thickness of the wall of the cleaning tube with inner bore 30, heat capacity, the contact tube 12 and the inner wall of the gas nozzle 13 is cleaned at the same time.
  • the detached cleaning tube 35 is placed on the cleaning head 5 in Example 1 and fixed in position by the adapted union nut 36.
  • the welding torch 10 either moves to the position 18 for cleaning the gas outlet opening of the gas nozzle 13 or with the stepped region 37 over the contact tube 12.
  • the welding torch 10 is moved over the contact tube 12 until the nozzle ring is in the position 19 and the nozzle ring 39 is in the position 18.
  • the nozzle rings 38 and 39 are activated by actuating different valves.
  • the cleaning is done by alternating or simultaneous control of the valves.
  • the relief bore 40 prevents back pressure and the air bores 41 remove the residues from the removed cleaning tube 35.
  • valve measuring device cleaning head nut housing cleaning tube union nut 0 welding torch 1 starting position 2 contact tube 3 gas nozzle 4 center line 5 signal (C0 2 liquid) 6 signal (valve) 7 nozzle openings 8 first cleaning position (single-wire torch) 9 second cleaning position (single-wire torch) 0 compensating hole 1 tandem torch 2 Starting position 3 center line 4 angle 5 contact tube I 6 first cleaning position (tandem burner) 7 gas nozzle 8 second cleaning position (tandem burner) 9 contact tube II 0 cleaning tube with inner bores 1 inner bore 2 ventilation bores 3 air outlet openings 4 enlarged union nut 5 offset cleaning tube 6 adapted union nut 7 offset area bore nozzle air bores discharge 9

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Cleaning In General (AREA)
  • Arc Welding In General (AREA)

Abstract

L'invention concerne un procédé et des dispositifs de nettoyage de chalumeaux de soudage (10), par exemple dans des chaînes automatisées de soudage, sur des robots de soudage ou lors de la production à la pièce, au moyen d'un milieu froid, de préférence de la glace carbonique, la neige carbonique produite par détente du CO2 liquide sous pression étant directement appliquée avec une faible compression et de manière uniforme ou intermittente sur les surfaces à nettoyer du tuyau de contact (12) et de la buse (13) au moyen d'une tête de nettoyage (8) adaptée au chalumeau (10).
EP05747660A 2004-04-24 2005-04-22 Procede et dispositif de nettoyage de chalumeaux de soudage au moyen de glace carbonique Withdrawn EP1784275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004063473A DE102004063473B4 (de) 2004-03-08 2004-04-24 Verfahren und Vorrichtung zum Reinigen von Schweißbrennern
PCT/DE2005/000745 WO2005102584A1 (fr) 2004-04-24 2005-04-22 Procede et dispositif de nettoyage de chalumeaux de soudage au moyen de glace carbonique

Publications (1)

Publication Number Publication Date
EP1784275A1 true EP1784275A1 (fr) 2007-05-16

Family

ID=34977060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05747660A Withdrawn EP1784275A1 (fr) 2004-04-24 2005-04-22 Procede et dispositif de nettoyage de chalumeaux de soudage au moyen de glace carbonique

Country Status (6)

Country Link
US (1) US20080236633A1 (fr)
EP (1) EP1784275A1 (fr)
JP (1) JP2007534496A (fr)
CA (1) CA2563974A1 (fr)
DE (1) DE112005001612A5 (fr)
WO (1) WO2005102584A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005030928B4 (de) * 2005-07-02 2008-07-17 Alexander Binzel Schweisstechnik Gmbh & Co. Kg Reinigungsvorrichtung für Lichtbogenschweiß- oder Schneidbrenner sowie ein entsprechendes Verfahren
DE102008059764A1 (de) 2008-04-02 2009-10-08 Ohe, Jürgen von der, Dr.-Ing. Verfahren und Vorrichtung zum Reinigen von stationären und beweglichen Ein- und Mehrdraht Schweißbrennern mit und ohne Innenkonus
EP2135700B1 (fr) * 2008-06-18 2013-05-22 Henkel AG & Co. KGaA Procédé et appareil pour l'entretien automatisé d'une tête de chalumeau de soudage
IT1404381B1 (it) 2011-02-23 2013-11-22 Acetilene E Derivati S I A D Spa In Breve S I A D Spa Soc It Apparecchiatura migliorata per la pulizia di torce di saldatura mediante l'uso del freddo, e relativo dispositivo erogatore di un flusso raffreddante.
DE102012006567A1 (de) * 2012-03-30 2013-10-02 Dürr Systems GmbH Trockeneis-Reinigungseinrichtung für eine Lackieranlage
CN103949760B (zh) * 2014-05-14 2016-04-06 泰佰亿（山东）工业有限公司 传感式焊接喷化器装置

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Publication number Priority date Publication date Assignee Title
DE3244993C2 (de) * 1982-12-04 1985-07-25 Werner 8755 Alzenau Behrens Schweiß-Gasbrenner Reinigungsgerät
US6173916B1 (en) * 1994-12-15 2001-01-16 Eco-Snow Systems, Inc. CO2jet spray nozzles with multiple orifices
AT404686B (de) * 1995-07-24 1999-01-25 Hoffmann Hans Sprühnebelführungshülse
US5853128A (en) * 1997-03-08 1998-12-29 Bowen; Howard S. Solid/gas carbon dioxide spray cleaning system
US6151913A (en) * 1999-04-23 2000-11-28 Praxair Technology, Inc. Method and apparatus for agglomerating fine snow particles
JP2001212533A (ja) * 2000-02-03 2001-08-07 Dainippon Printing Co Ltd 基板端面の洗浄装置
US6811821B2 (en) * 2001-03-30 2004-11-02 J & G Chemical Specialities, Llc Barrier coatings
US6723955B2 (en) * 2001-06-21 2004-04-20 Intertech Systems, Inc. Cleaning system for welding torches which effects cleaning by means of cold temperature
DE10243693B3 (de) * 2002-09-20 2004-04-01 Jens Werner Kipp Strahlverfahren und-vorrichtung

Non-Patent Citations (1)

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Title
See references of WO2005102584A1 *

Also Published As

Publication number Publication date
US20080236633A1 (en) 2008-10-02
JP2007534496A (ja) 2007-11-29
DE112005001612A5 (de) 2007-05-24
CA2563974A1 (fr) 2005-11-03
WO2005102584A1 (fr) 2005-11-03

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