EP2111320A1 - Dispositif pour nettoyer la buse de gaz en céramique d'un chalumeau de soudage - Google Patents

Dispositif pour nettoyer la buse de gaz en céramique d'un chalumeau de soudage

Info

Publication number
EP2111320A1
EP2111320A1 EP07857034A EP07857034A EP2111320A1 EP 2111320 A1 EP2111320 A1 EP 2111320A1 EP 07857034 A EP07857034 A EP 07857034A EP 07857034 A EP07857034 A EP 07857034A EP 2111320 A1 EP2111320 A1 EP 2111320A1
Authority
EP
European Patent Office
Prior art keywords
gas nozzle
cleaning
ceramic gas
cleaning device
coolant
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Withdrawn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
EP07857034A
Other languages
German (de)
English (en)
Inventor
Joachim Thielmann
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.)
Jthielmann Gesellschaft fur Automatisierungs- Technik Mbh
Original Assignee
Jthielmann Gesellschaft fur Automatisierungs- Technik Mbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jthielmann Gesellschaft fur Automatisierungs- Technik Mbh filed Critical Jthielmann Gesellschaft fur Automatisierungs- Technik Mbh
Publication of EP2111320A1 publication Critical patent/EP2111320A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B23K9/29—Supporting devices adapted for making use of shielding means
    • B23K9/291—Supporting devices adapted for making use of shielding means the shielding means being a gas

Definitions

  • the invention relates to a device for cleaning the ceramic gas nozzle of a welding torch by means of insertable into the ceramic gas nozzle cleaning elements.
  • the ceramic gas nozzle is brought to the cleaning device in a cleaning position and cleaned by the cleaning elements. Subsequently, the ceramic gas nozzle is moved from the cleaning position for further use.
  • Gas nozzles are used, for example, in inert gas welding in the automotive industry.
  • a suitable welding wire is passed through an approximately tubular gas nozzle and approached by means of a robot weld.
  • the weld or the automobile body and the welding wire are at different electrical voltage potential.
  • the welding wire melts when attaching the weld.
  • the protective gas introduced through the gas nozzle causes an oxygen-free zone in the arc region.
  • some of the weld material splatters and contaminates the gas nozzle. These impurities gradually close the gas nozzle so that gas disturbances can occur. To prevent this, the gas nozzle must be cleaned regularly.
  • Cleaning devices for gas nozzles made of metal, in particular copper, are known from the prior art.
  • motor driven, rotating knives are inserted into the gas nozzle so that the knife blades scrape the inner wall of the nozzle of residues of the welding material. Then the knife is extended again and sprayed an anti-adhesive agent into the nozzle.
  • the anti-adhesive prevents the gas nozzle from reoccupying too quickly when used again.
  • ceramic gas nozzles are increasingly being used, since these have advantages over metal-gas nozzles in inert gas welding.
  • the ceramic gas nozzles also encounter similar contamination problems as metal gas nozzles. So it is also necessary for ceramic gas nozzles to clean them from time to time.
  • the ceramic material is scratched and the ceramic gas nozzles are damaged and rendered useless.
  • the cleaning elements have an arrangement of a plurality of oscillating brushes whose bristles brush off impurities in the cleaning position in the outer and inner wall region of the ceramic gas nozzle.
  • the special brushes enable a gentle cleaning of the ceramic gas nozzles. Due to the oscillating rotational movements of the cleaning brushes, a bending of the bristles is prevented, thus ensuring a consistently good cleaning effect over a long period of time.
  • the ceramic gas nozzle can be moved or positioned by a robot and the cleaning device can be connected to the control device of the robot.
  • the cleaning device can be connected to the control device of the robot.
  • a cover bracket with a centering opening can be provided on the cleaning device, through which the ceramic gas nozzle is introduced.
  • a particularly good cleaning effect is achieved when the brushes in the cleaning position about 12mm to 15mm far into the ceramic gas nozzle are introduced.
  • the resulting in the brush cleaning, brushed off the ceramic gas nozzle material can be collected in a particularly simple manner in a arranged below the brush assembly dirt tray.
  • the cleaning brushes may each have a brush axis on which the bristles are mounted and which forms the axis of rotation for the oscillating rotational movements. With such cleaning brushes deposited on the inner wall of the ceramic gas nozzles impurities can be brushed off particularly effectively.
  • the brush axes can be aligned parallel to the extension direction of the ceramic gas nozzle or inclined thereto.
  • An electric or pneumatic drive unit can generate the oscillating rotational movements of the cleaning brushes.
  • the drive unit can be driven in dependence on the position of the ceramic gas nozzle determined by the control device of the robot. Thus, position sensors are saved.
  • the bristles used in the cleaning brushes can be made of a plastic which is temperature resistant at temperatures up to at least 200 0 C, or as natural bristles. Such bristles do not damage the ceramic material and can be used even with up to 200 0 C hot gas nozzles without being damaged.
  • the bristles may be made of nylon, in particular abrasive nylon.
  • the cleaning device may have a cooling device, on which the ceramic gas nozzle is brought into a cooling position before cleaning, cooled and then moved in the cooled state from the cooling position.
  • the ceramic gas nozzle in the cooled state a temperature of about 200 0 C (depending on the brush material used) or have less, so that the cleaning brushes are not damaged by excessive temperatures.
  • the cooling device may have a filled with coolant dip tank whose coolant level is held by means of a coolant reservoir to a predetermined level. In this case, the dip pan can always be refilled with coolant according to the principle of a "bird bath" from the coolant reservoir.
  • the cooling device can have a fill level sensor which monitors the fill level of the coolant in the dip pan and / or in the coolant reservoir.
  • the level sensor can be connected to the control device of the robot and signal this when the minimum filling quantity in the immersion tank and / or in the coolant reservoir is below. It can be prevented with suitable control of the robot depending on the level of the coolant in the dip pan and / or in the coolant reservoir that a cooled gas nozzle is driven into a dip tank, in which not enough coolant is available for cooling.
  • the coolant can contain an anti-adhesive agent or consist of an anti-adhesive agent.
  • the non-stick agent prevents excessive accumulation of impurities at the ceramic gas nozzle.
  • the cleaning device may have a blow-out device, on which the ceramic gas nozzle is brought into a blow-off position, blown out by means of compressed air and then moved in the blown-out state from the blow-off position.
  • a blow-out device on which the ceramic gas nozzle is brought into a blow-off position, blown out by means of compressed air and then moved in the blown-out state from the blow-off position.
  • impurities and moisture precipitates are removed by means of compressed air.
  • a collecting container can be arranged below the blow-out device. So that the blown-out material is safely collected in the collecting container, the ceramic gas nozzle can be positioned in the blow-off position directed downwards in the direction of the collecting container. The gas nozzle is blown out after cooling with compressed air from the supply line of the welding torch.
  • an outwardly directed overflow for the accumulated liquid can be provided on the collecting container.
  • the cleaning device may have a spraying device, at which the ceramic gas nozzle is brought into a spraying position, sprayed with an antiblocking agent and then moved from the spraying position for further use.
  • the cleaning device may comprise a wire cutting device, at which the ceramic gas nozzle is brought into a wire cutting position, at which the welding wire is cut to a predetermined length, and then moved from the wire cutting position for further use. This procedure must be done before cleaning the gas nozzle with oscillating brushes so as not to damage the brushes through the wire.
  • the cleaning device With the cleaning device according to the invention, a particularly advantageous and simple cleaning method can be carried out, in which, in a first step, the ceramic gas nozzle at the cooling device must be cooled, in a further step at the blower by means of pressure supplied from behind. air is freed of loose impurities by the burner and cleaned in a further step with the oscillating brushes of more persistent impurities.
  • the coolant level can be interrogated and, depending on the current coolant level, either the ceramic gas nozzle immersed in the coolant or coolant can be replenished.
  • the ceramic gas nozzle When blowing out the ceramic gas nozzle on the blower, the ceramic gas nozzle can be blown out depending on the pollution with 6 bar of compressed air or by means of a pressure booster with 12 bar of compressed air.
  • the ceramic gas nozzle After cleaning the ceramic gas nozzle with the oscillating brushes, the ceramic gas nozzle can be blown out again at the blower to remove loosened contaminants.
  • the ceramic gas nozzle at the spraying device can be sprayed with an antiblocking agent.
  • the welding wire on the wire cutting device can be cut to a predetermined length.
  • Figure 1 shows a schematic representation and in a first perspective view of the front and top and the right side of the mounted on a stand cleaning device
  • Figure 2 is a schematic representation and in a second perspective view of the front and top of the cleaning device shown in Figure 1;
  • Figure 3 is a schematic representation and in a third perspective view of the rear and top and the left side of the cleaning device shown in Figure 1.
  • Figures 1 to 3 show an embodiment of the inventive device for cleaning the ceramic gas nozzle 10 of a (not shown) welding torch in different perspective views.
  • the cleaning device is mounted on a stand 42, which in turn is mounted on a flat floor.
  • the ceramic gas nozzle 10 to be cleaned is moved by a robot 16 (only indicated in FIG. 1).
  • the cleaning device is connected to the control device 18 of the robot 16 via a connecting line (indicated in FIG. 1), which is connected to an electrical connection 44 on the cleaning device.
  • the ceramic gas nozzle 10 is cleaned with three special, oscillating rotational movements executing plastic brushes 12, the bristles brush 10 in the cleaning position, at least on the inner wall portion 14 of the ceramic gas nozzle 10 impurities.
  • the bristles are temperature resistant up to 200 ° C and consist of a plastic, such as nylon, especially grinding nylon, or are designed as natural bristles.
  • the ceramic gas nozzle 10 Since the ceramic gas nozzle 10 is very hot immediately after the welding operation, it is cooled to about 200 ° C before cleaning.
  • a cooling device 28 is provided, on which the ceramic gas nozzle 10 is brought to a cooling position before being cleaned and is cooled there.
  • the cooling device 28 has a dip tank 30 filled with coolant, the coolant level of which is kept at a predetermined level by means of a coolant reservoir 32.
  • the coolant may contain anti-adhesive.
  • the robot 16 moves the ceramic gas nozzle 10 approximately 20 mm deep into the immersion tank 30 filled with coolant.
  • the residence time of the ceramic gas nozzle 10 in the coolant is dependent on the starting temperature.
  • the ceramic gas nozzle 10 must remain in the coolant until it has cooled to about 200 0 C.
  • the cooling device 28 has a fill level sensor 34, which monitors the fill level of the coolant in the dip pan 30 and in the coolant reservoir 32.
  • the level sensor 34 is connected to the controller 18 of the robot 16.
  • the level sensor 34 provides a signal to the controller 18 of the robot 16 when the dip tank 30 and the coolant reservoir 32 are filled with coolant. If the minimum quantity is reached, which is reached at a level of about 20 mm, no signal is sent to the control device 18 of the robot 16. Then no cooling of the ceramic gas nozzle 10 is possible and the robot 16 does not drive the ceramic gas nozzle 10 into the immersion trough 30. Only when coolant is refilled, the cooling process can be started.
  • the ceramic gas nozzle 10 is again moved from the cooling position. Subsequently, the robot 16 moves the ceramic gas nozzle 10 to a blow-out device 34, at which the ceramic gas nozzle 10 is brought into a blow-out position.
  • the ceramic gas nozzle 10 is positioned as close as possible above a collecting container 36 with a bore 37 mounted on its upper side. At the bore 37 a drip collecting funnel 39 is laterally arranged, which collects dripping condensate or coolant and introduces into the bore 37.
  • the ceramic gas nozzle 10 is positioned in the direction of the collecting container 36 downwards in the blow-off position.
  • the ceramic gas nozzle 10 is blown out by means of compressed air with 6 bar or 12 bar depending on the contamination by the (not shown) burner hose assembly.
  • the blown-out material is collected in the catch tank 36.
  • the collecting container 36 has an overflow 40 for the accumulated, blown material, which opens into the dip pan 30, so that blown coolant or condensate is again available as a coolant.
  • the robot 16 moves the ceramic gas nozzle 10 from the blow-off position into a cleaning position defined relative to the brush assembly 12.
  • a cover bracket 16 with a centering opening 22 is arranged on the cleaning device in the region of the brush arrangement 12, through which the ceramic gas nozzle 10 is moved horizontally over the three oscillating brushes 12.
  • the brushes 12 each have a brush axis on which the bristles are mounted and which forms the axis of rotation for the oscillating rotational movements.
  • the brushes 12 dip about 15mm into the ceramic gas nozzle 10.
  • the still adhering weld spatters are brushed off by the ceramic gas nozzle 10 and the current nozzle (not shown).
  • a dirt trap 24 is arranged for the brushed out of the ceramic gas nozzle 10 material.
  • the brushes 12 are driven by a pneumatic or electric drive unit 26 to oscillate rotational movements.
  • the drive unit 26 is controlled as a function of the determined by the controller 18 of the robot 26 position of the ceramic gas nozzle 10.
  • the robot 16 moves the ceramic gas nozzle 10 in the brushed state from the cleaning position once more into the blow-out position, in which the ceramic gas nozzle 10 is blown out again. Following this, the welding program can be continued.
  • the ceramic gas nozzle can be sprayed with a non-stick agent on a spraying device (not shown).
  • the ceramic gas nozzle 10 may be dipped again into the anti-adhesive coolant in the dip tank 30.
  • the welding wire can be cut to a predetermined length on a wire cutting device (not shown).

Landscapes

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

Abstract

L'invention concerne un dispositif pour nettoyer la buse de gaz en céramique (10) d'un chalumeau de soudage au moyen d'éléments de nettoyage pouvant être introduits dans la buse de gaz en céramique (10). La buse de gaz en céramique (10) est apportée au dispositif de nettoyage dans une position de nettoyage, et nettoyée par les éléments de nettoyage. Ensuite, la buse de gaz en céramique (10) est déplacée hors de la position de nettoyage pour poursuivre son utilisation. Les éléments de nettoyage présentent un agencement de plusieurs brosses oscillantes (12) dont les poils, dans la position de nettoyage, enlèvent par brossage les impuretés sur la région de paroi intérieure et extérieure (14) de la buse de gaz en céramique (10). Pendant le nettoyage par les brosses, la température de la buse de gaz ne doit pas dépasser la température maximale admissible pour les brosses. Utilisation de préférence pour des processus de soudage à gaz protecteur commandés par robots.
EP07857034A 2007-01-23 2007-12-21 Dispositif pour nettoyer la buse de gaz en céramique d'un chalumeau de soudage Withdrawn EP2111320A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007004239A DE102007004239A1 (de) 2007-01-23 2007-01-23 Vorrichtung zum Reinigen der Keramik-Gasdüse eines Schweißbrenners
PCT/EP2007/011311 WO2008089835A1 (fr) 2007-01-23 2007-12-21 Dispositif pour nettoyer la buse de gaz en céramique d'un chalumeau de soudage

Publications (1)

Publication Number Publication Date
EP2111320A1 true EP2111320A1 (fr) 2009-10-28

Family

ID=39265249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07857034A Withdrawn EP2111320A1 (fr) 2007-01-23 2007-12-21 Dispositif pour nettoyer la buse de gaz en céramique d'un chalumeau de soudage

Country Status (3)

Country Link
EP (1) EP2111320A1 (fr)
DE (1) DE102007004239A1 (fr)
WO (1) WO2008089835A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015121679B3 (de) * 2015-12-13 2016-11-17 J. Thielmann, Gesellschaft für Automatisierungstechnik mbH Schutzgasmenge-Messanordnung
CN113787598B (zh) * 2021-08-31 2022-08-30 贵州华耀科技有限公司 蜂窝陶瓷生坯切割吹灰工艺及自动吹灰装置
CN117123979B (zh) * 2023-10-23 2023-12-22 广州市捷迈智能装备制造有限公司 一种钣金自动焊接机器人

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364704A (en) * 1942-06-05 1944-12-12 Western Electric Co Cleaning apparatus
DE3238918A1 (de) * 1982-03-30 1983-10-13 Wilhelm Merkle Schweißmaschinenbau GmbH, 8871 Kötz Vorrichtung zur reinigung eines schweissbrenners
JPS5973186A (ja) * 1982-10-18 1984-04-25 Hitachi Ltd 溶接ト−チのスパツタ除去装置
US4733050A (en) * 1986-12-30 1988-03-22 American Sterilizer Company Robotic welding head cleaning apparatus
JP2989357B2 (ja) * 1991-11-22 1999-12-13 三菱重工業株式会社 溶接トーチのノズル清掃装置
DE29807882U1 (de) * 1998-05-04 1999-09-16 Iss Gradewald Ind Schiffs Serv Ultraschall-Reinigungsanlage für Schweißpistolen oder ähnliche Werkzeuge
US6891127B2 (en) * 2000-02-07 2005-05-10 Weld Aid Products, Inc. Implementation system for continuous welding, method, and products for implementation of the system and/or method
JP3842780B2 (ja) * 2003-12-19 2006-11-08 株式会社三五 溶接トーチ用ノズルの冷却システム
AT7857U1 (de) * 2004-04-07 2005-10-17 Fronius Int Gmbh Reinigungsvorrichtung zum reinigen von schweissbrennern
DE202005015806U1 (de) * 2005-10-08 2005-12-15 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH Reinigungsstation für einen robotergestützten oder automatisierten Brenner
EP1772671A1 (fr) * 2005-10-08 2007-04-11 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH Appareil de nettoyage pour brûleur robotisé ou automatisé

Non-Patent Citations (1)

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Title
See references of WO2008089835A1 *

Also Published As

Publication number Publication date
DE102007004239A1 (de) 2008-08-07
WO2008089835A1 (fr) 2008-07-31

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