WO2020005790A1 - Ensemble pivotant d'extraction de fumées pour soudage sous protection gazeuse - Google Patents

Ensemble pivotant d'extraction de fumées pour soudage sous protection gazeuse Download PDF

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Publication number
WO2020005790A1
WO2020005790A1 PCT/US2019/038639 US2019038639W WO2020005790A1 WO 2020005790 A1 WO2020005790 A1 WO 2020005790A1 US 2019038639 W US2019038639 W US 2019038639W WO 2020005790 A1 WO2020005790 A1 WO 2020005790A1
Authority
WO
WIPO (PCT)
Prior art keywords
extraction
fume extraction
fume
mounting bracket
interior space
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.)
Ceased
Application number
PCT/US2019/038639
Other languages
English (en)
Inventor
Michael Hattingh
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.)
ROBOVENT PRODUCTS GROUP Inc
Original Assignee
ROBOVENT PRODUCTS GROUP Inc
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 US16/020,376 external-priority patent/US20190001381A1/en
Application filed by ROBOVENT PRODUCTS GROUP Inc filed Critical ROBOVENT PRODUCTS GROUP Inc
Publication of WO2020005790A1 publication Critical patent/WO2020005790A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B23K9/32—Accessories
    • B23K9/325—Devices for supplying or evacuating shielding gas

Definitions

  • This invention relates generally to an air filter system for use with gas shielded welding.
  • Typical air filter systems include a large overhead hood to create a full enclosure, can have complex and bulky ducting systems, and large floorspace duct collectors. In contrast, this system has a compact footprint, small hoses, typically in the 1 - 3” range, and does not require an overhead hood, enclosures or large complex ducting. This makes this system a lot more economical to implement, leaves a lot more room for manufacturing operations, and leaves unobstructed overhead access to the welding cell for overhead crane access and material handling systems, by way of example.
  • this invention provides a fume extraction system for use with a gas shielded welding device.
  • the fume extraction system includes an extraction hose mounting bracket that allows the welding torch to swivel in excess of 360°.
  • the mounting bracket has an internal flange adapted to mount about a welding torch.
  • the bracket has a collar spaced from the internal flange that defines an interior space.
  • a fume extraction port is in operative communication with the interior space.
  • An intake shroud is mounted to the collar.
  • the intake shroud is generally tubular and is open at one end.
  • the fume extraction port, interior space and shroud create an air-path through the extraction hose mounting bracket. In this way, the fume extraction system can be connected to an air filter through the extraction port and the air filter draws air along said air-path through the interior space and the intake shroud without interfering with the gas shield welding operation.
  • the bracket in the disclosed embodiment swivels on the torch.
  • a bearing is mounted upon the torch.
  • Shaped packers are mounted to the internal flanges. The shaped packers provide correct positioning of the bearing on the nozzle and more specifically the weld gun neck. The packers rotate on the bearing to allow the bracket to swivel upon the neck.
  • the packers are mounted between lips extending from the internal flanges.
  • Figure 1 is an exploded view of the fume extraction swivel assembly for gas shielded welding unit of the present invention.
  • Figure 2 is an exploded view of the fume extraction swivel assembly for gas shielded welding unit of the present invention.
  • Figure 3 is a perspective view of a gas shielded welding unit including the fume extraction swivel assembly of the present invention..
  • Figure 4 is an exploded view of the fume extraction assembly for gas shielded welding unit of the present invention.
  • the fume extraction assembly of the present invention is shown generally at 12.
  • the fume extraction assembly 12 is used in connection with gas shielded welding units shown generally at 10 in figure 3.
  • the welding unit 10 as illustrated is a robotic welding unit. It will be appreciated by those of ordinary skill in the art, that the welding unit 10 can be any type of gas shielded welding unit, and the invention is not limited to robotic welding units.
  • the robotic welding unit as illustrated includes a torch mounting body 14 to which the welding torch gas nozzle 16 is attached.
  • a welding torch 18 extends from the welding torch gas nozzle 16.
  • the fume extraction system 12 is mounted to the welding torch 18.
  • the fume extraction system 12 of the present invention includes an extraction hose base mounting bracket 22.
  • the mounting bracket 22 allows the welding torch on the robot to swivel in excess of 360°. This ensures that the suction hose does not wrap around the robot arm.
  • the fume extraction system 12 of the present invention includes extraction hose mounting bracket 22.
  • the mounting bracket 22 of the present invention as disclosed has two separate parts, the first part 23 and second part 24. The two parts are connected together. In the disclosed embodiment, screws 25 are used to connect the two parts 23 and 24. It will be appreciated by those of ordinary skill in the art that other connection methods could be used, such as for example, adhesives, band clamps, welding, etc.
  • the first part 23 includes a fume extraction port 20 for receiving an extraction hose 34 that extends back to a filter unit 21 as illustrated in figure 3.
  • the fume extraction port 20 and extraction hose 34 can be clamped with a band clamp, friction fit, threaded together, bayonet connected etc.
  • the first and second parts 23 and 24 form a collar 27 when they are connected.
  • the collar 27 receives a flexible intake shroud 40.
  • the shroud 40 is friction fitted onto collar 27.
  • many different mounting methods could be used.
  • the first half 23 of the mounting bracket 22 includes an internal flange 26 which is configured to fit over the torch 18.
  • An interior space 30 is located between the flange 26 and the wall of the collar 27.
  • the interior space 30 is operatively connected to the extraction hose 34.
  • the other half of the bracket 24 includes a mating flange 28 and a mating space 30.
  • the bracket 22 is made of PVC, but could for example be made of metal, reinforced plastic, plastic, etc.
  • the bracket 22 of the disclosed embodiment swivels on the torch 18.
  • a bearing 50 is mounted upon the welding torch 18 or on the flanges 26 and 28.
  • the bearing 50 is a sleeve bearing.
  • Shaped packers 52 are mounted to the mating flanges 26 and 28 or alternatively to he welding torch 18.
  • the shaped packers 52 provide correct positioning of bearing 50 on the nozzle 18 and more specifically the weld gun neck 54.
  • the packers 52 rotate on the bearing 50 or the bearing 50 rotates on the packers 52 depending on which is mounted to the flanges 26 and 28 to allow the bracket 22 to freely swivel upon the neck 54.
  • the packers 52 are mounted between lips 53 extending from the internal flanges 26 and 28.
  • the packers 52 can be friction fit between the lips 53, glued, screwed, etc. to the flanges 26 and 28.
  • the bearing 50 is friction fit on to the nozzle 18.
  • the bearings 50 can be made from for example bronze, brass, steel, steel with PTFE of PTFE or any other bearing material.
  • the packers can be made of for example nylon, machined aluminum, steel, or similar material that is resistant to elevated temperatures.
  • the flexible intake shroud 40 is flexible and flexes out of the way if there is any collision with the weldment workpiece, with the fixture etc. to prevent damage or adversely affect the calibration of the robot.
  • the flexible intake shroud 40 is made from silicone material to withstand high heat from the weld arc since it is in close proximity of the welding operation.
  • Shroud 40 is positioned at a predetermined distance back from the weld tip (typically 1 to 3 inches depending on weldment type) to maximize fume capture before the thermal plume causes it to escape, while simultaneously far enough away to eliminate the possibility of sucking the shielding gas away from the weld which could cause weld porosity and poor weld structural integrity. Air is captured at the intake shroud at velocities typically between 2,500 ft/min and 6,800 ft/min.
  • the robotic welding unit 10 includes gas tubes 42 and 44 for the shield gas.
  • the bracket 22 can include mating grooves to accept the gas tubes 42 and 44 within the bracket 22.
  • the flexible hose 34 is attached to an air filter system 21.
  • Air filter systems are well known in the art. Robovent is the assignee of the present application and engineers, manufactures, sells and installs air filter systems of the type used in the present invention.
  • the air filter system 21 has a blower that draws air through the flexible hose 34 into the inlet to which the flexible hose 34 is attached. The air is drawn across filters that filter out particulates in the air and then returns to the air to the surrounding environment.
  • the hose 34 is connected to the robotic welder 10 through the bracket 22 and in particular to the fume extraction port 20.
  • the air filter 21 draws air through the interior space 30 and the intake shroud 40 connected to the collar 27.
  • the intake shroud 40 is positioned adjacent to the welding arc to suck in the resulting welding fumes created by the welding operation.
  • the shroud 40 is positioned so that it does not interfere with the welding operation as shown in the figures.
  • the bracket 22 of the disclosed embodiment swivels on the torch 18.
  • the shaped packers 52 rotate on sleeve bearing 50.
  • the shaped packers 52 provide correct positioning of sleeve bearing 50 on the nozzle 18 and more specifically the weld gun neck 54.
  • the faces of packers 52 rotate on the sleeve bearing 50 to allow the bracket 22 to freely swivel upon the neck 54.
  • the mounting bracket 22 swivels in excess of 360° on the torch. This ensures that the suction hose does not wrap around the robot arm.

Landscapes

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

Abstract

La présente invention concerne un système d'extraction de fumées destiné à être utilisé sur un dispositif de soudage sous protection gazeuse. Le système d'extraction de fumées comprend un support de montage de tuyau d'extraction qui comporte une bride interne conçue pour être montée autour d'un chalumeau de soudage. Le support comporte un collier espacé de la bride interne qui définit un espace intérieur. Une garniture d'étanchéité est montée dans la bride et tourne sur un palier monté sur le chalumeau. Un orifice d'extraction de fumées est en communication fonctionnelle avec l'espace intérieur. Une enveloppe d'admission est montée sur le collier. L'orifice d'extraction de fumées, l'espace intérieur et l'enveloppe créent un trajet d'air à travers le support de montage de tuyau d'extraction. De cette manière, le système d'extraction de fumées doit être relié à un filtre à air par l'orifice d'extraction et le filtre à air aspire de l'air le long dudit trajet d'air à travers l'espace intérieur et l'enveloppe d'admission sans interférer avec l'opération de soudage sous protection gazeuse. Le support pivotant assure que le tuyau d'extraction ne s'enroule pas autour du chalumeau.
PCT/US2019/038639 2018-06-27 2019-06-24 Ensemble pivotant d'extraction de fumées pour soudage sous protection gazeuse Ceased WO2020005790A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/020,376 2018-06-27
US16/020,376 US20190001381A1 (en) 2017-06-28 2018-06-27 Fume extraction swivel assembly for gas shielded welding

Publications (1)

Publication Number Publication Date
WO2020005790A1 true WO2020005790A1 (fr) 2020-01-02

Family

ID=67211927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/038639 Ceased WO2020005790A1 (fr) 2018-06-27 2019-06-24 Ensemble pivotant d'extraction de fumées pour soudage sous protection gazeuse

Country Status (1)

Country Link
WO (1) WO2020005790A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116833632A (zh) * 2023-07-14 2023-10-03 南京联空智能增材研究院有限公司 一种焊枪烟尘管道及其多物理场耦合仿真方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9313238U1 (de) * 1993-09-03 1993-10-28 Stauffer, Hellmut, Dipl.-Ing., 67304 Eisenberg Absaugvorrichtung für Schweiß- oder Schneidanlagen
JP2002096173A (ja) * 2000-07-19 2002-04-02 Toyota Industries Corp ヒューム吸引ノズル
EP2298485A1 (fr) * 2009-09-10 2011-03-23 TBI Industries GmbH Dispositif d'aspiration pour un chalumeau de soudage robotisé
DE102011106684A1 (de) * 2011-07-06 2013-01-10 Daimler Ag Abluftabsaugung für eine Fugevorrichtung zum Schweißen oder Löten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9313238U1 (de) * 1993-09-03 1993-10-28 Stauffer, Hellmut, Dipl.-Ing., 67304 Eisenberg Absaugvorrichtung für Schweiß- oder Schneidanlagen
JP2002096173A (ja) * 2000-07-19 2002-04-02 Toyota Industries Corp ヒューム吸引ノズル
EP2298485A1 (fr) * 2009-09-10 2011-03-23 TBI Industries GmbH Dispositif d'aspiration pour un chalumeau de soudage robotisé
DE102011106684A1 (de) * 2011-07-06 2013-01-10 Daimler Ag Abluftabsaugung für eine Fugevorrichtung zum Schweißen oder Löten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116833632A (zh) * 2023-07-14 2023-10-03 南京联空智能增材研究院有限公司 一种焊枪烟尘管道及其多物理场耦合仿真方法

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