• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a gaseous diffusion welding protection device (10) comprising a plurality of elements (20, 26, 28) mounted one after the other and articulated to each other, and comprising a front element (20), elements intermediate (26) mounted one behind the other and behind the front element (20), a rear element (28) which is mounted behind the last intermediate element (26), each element (20, 26, 28) comprising a housing (30) open downwards and to each other adjacent element (20, 26, 28) forming a gas diffusion chamber (16), characterized in that two adjacent elements (20, 26, 28) are articulated with each other and they are free to rotate relative to each other, regardless of the operating conditions of the protective device (10). The invention also relates to a welding installation of two edges vis-à-vis two parts, a welding protection device according to the invention, and comprising a guiding system of the protection device.
    公开号:FR3038857A1
    申请号:FR1556678
    申请日:2015-07-15
    公开日:2017-01-20
    发明作者:Stephane Pernodet；David Ripoll；Pierre Tabouriech
    申请人:Airbus Operations SAS；
    IPC主号:
    专利说明:

    DEVICE FOR PROTECTING GAS DIFFUSION WELDING
    DESCRIPTION
    TECHNICAL FIELD The invention relates to a gaseous diffusion welding protection device for diffusing on a weld bead a flow of protective gas preventing any oxidation of the material constituting the weld bead. The invention more particularly relates to a device for diffusing a flow of gas on a weld bead having a non-rectilinear shape.
    STATE OF THE PRIOR ART
    When welding two pieces, for example by a TIG (Tungsten Inert Gas) welding process or arc plasma welding, the molten material is protected by an inert gas preventing its rapid oxidation. In general, the inert gas is fed through the solder head, thereby protecting the area where the melting occurs.
    It is sometimes necessary to protect the portion of the weld that has just been made and which is located near the area where the melting occurs.
    This protection is implemented by a protective device which covers a section of the weld bead and which moves on the weld bead, following the weld head.
    This protective device, commonly known as "straggler", consists of an elongated element which extends above the weld seam and which delimits a cavity open towards the weld bead, through which the inert gas is projected onto the cord of welding.
    EP-A-0,452,213 describes a protective device designed to protect a flat or circular weld bead.
    This protection device comprises several elements articulated to each other and whose relative position of the elements is locked in operation, in order to maintain a configuration adapted to the geometry of the weld to be performed.
    Such a protective device can thus be used for welding flat elements or for the internal and external welding of cylindrical elements.
    However, some welds are made in non-rectilinear or circular geometries, to which such a protective device can not be applied. The invention aims to provide a protection device that can adapt to any welding geometry.
    DISCLOSURE OF THE INVENTION The invention relates to a gaseous diffusion welding protection device comprising several elements mounted one after the other and articulated to each other, and comprising, from front to back according to the alignment of the elements: a front element which is intended to receive a welding head; intermediate elements mounted one behind the other and behind the front element; and a rear member which is mounted behind the last intermediate member, each member having a housing open downward and to each other adjacent member, the housing assembly forming a gas diffusion chamber which is connected to a power source in gas, characterized in that two adjacent elements are articulated with each other and they are free to rotate relative to each other, regardless of the operating conditions of the protective device. The articulation of the constituent elements of the protection device makes it possible to modify the position of the elements relative to one another and this makes it possible to use the protection device for any welding geometry.
    In addition, the absence of locking elements makes it easy to adapt the configuration of the protective device during welding.
    Preferably, said two adjacent elements are articulated with each other by a ball joint, and are free to pivot relative to each other in all directions.
    The ball joint connection of the two adjacent elements allows them relative movement in all directions.
    Preferably, a first one of two adjacent elements comprises a hemispherical housing which is open towards the second element of said two adjacent elements and the second element comprises an insert of hemispherical shape complementary to the hemispherical housing of the first element, and said insert is received in hemispherical housing of the first element.
    Preferably, a first end of each intermediate element comprises a hemispherical housing and the second end of said intermediate element comprises an insert of hemispherical shape.
    Preferably, the front member has a hemispherical housing in which an insert of the adjacent intermediate member is received and the back member has an insert which is received in the hemispherical housing of the adjacent intermediate member.
    Preferably, the protection device comprises means for holding the insert of each element in the hemispherical housing of the adjacent element.
    Preferably, the protection device comprises at least one connecting cable which is fixed to the front element and to the rear element and which cooperates with each intermediate element, to prevent any separation of the elements relative to each other, to forward or backward.
    Preferably, the protection device comprises two cables vertically offset relative to each other, each end of each cable is attached to the front element or to the rear element and a segment of each cable is connected to to an intermediate element. The invention also relates to a welding installation of two edges vis-à-vis two parts, comprising a welding head, a welding protection device according to the invention, wherein the welding head is mounted on the front element of the welding protection device, and having a guiding system of the protective device along the edges vis-à-vis the parts to be welded.
    Preferably, the guiding system consists of two guides arranged on either side of the edges facing the parts to be welded, each guide having an edge near the edges facing the parts to be welded. which is similar in profile to the profile of said edges of the parts to be welded.
    Preferably, the edge of each guide is bevelled.
    BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended figures among which: FIG. 1 is a section along a vertical longitudinal plane of FIG. 2 is a top view of the welding protection device shown in FIG. 1; FIG. 3 is an exploded schematic representation of the welding protection device shown in FIG. Figure 4 is a sectional view along a transverse vertical plane of a welding installation provided with the welding protection device shown in Figures 1 and 2; Figure 5 is a schematic perspective view of the welding installation shown in Figure 4, showing the lateral guides of the protection device according to the invention.
    DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS
    For the description of the invention, the vertical, longitudinal and transverse orientations according to the reference V, L, T indicated in the figures will be adopted without limitation.
    Orientation from front to back shall also be adopted as the longitudinal direction and from left to right with reference to Figure 1 and the direction from top to bottom as the vertical direction and from top to bottom with reference to Figure 1.
    There is shown in the figures a welding protection device 10, which is intended for the protection of a weld bead 12 (FIG. 4) linking two parts 14 to each other during the welding process.
    The protection device 10 consists of an elongated element which is positioned above the weld bead 12 and which moves along the weld bead 12 as it is formed, to prevent the oxidation of the material constituting the weld seam 12.
    The protection device 10 comprises a chamber 16 which is open in the lower part of the protection device 10, to open towards the weld bead.
    An inert gas, such as, for example, helium or argon feeds this chamber 16 and is diffused towards the weld bead 12, thus avoiding any contact of the molten metal with the oxygen of the ambient air .
    The protective device 10 is intended to be used for the protection of weld beads having any geometry, that is to say for a straight weld bead 12, or curved, that is to say a circular welding seam or having a variable curvature.
    The protective device 10 therefore consists of a plurality of elements which are hinged to one another and which are arranged consecutively to each other, forming an alignment.
    The protective device 10 thus comprises a front element 20, or head element, which is located at a first end of the protection device 10. The head element 20 is associated with the welding head (not shown) which is used to form the weld bead, and it comprises means for its connection with a fixed component of the welding installation, for holding in place the head member 20 during the welding operation. According to a preferred embodiment of the protection device 10, the head member 20 is connected to the welding head by a pivot connection about the vertical main axis of the welding head. The head member 20 also comprises a nozzle 22 and a conduit 24 for connecting the chamber 16 to inert gas supply means.
    The protection device 10 also comprises intermediate elements 26 which are mounted one after the other and following the head element 20 and a tail rear element 28 which is mounted after the last element. intermediate 26.
    Each element 20, 26 and 28 comprises a hollow housing 30 which forms part of the chamber 16. The housing 30 of an element 20, 26, 28 is consequently open downwards towards the weld bead 12.
    Each housing 30 of an element 20, 26, 28 is further open towards the housing 30 of each element 20, 26, 28 adjacent to the element 20, 26, 28 in which the housing 30 is formed. The housings 30 thus communicate with each other and form a single cavity constituting the chamber 16.
    The housings 30 of the intermediate elements 26 are thus open downwardly, forwards and backwards, while the housing of the rear element 28 is open downwards and forwards. The rear element 28 has a transverse vertical rear plate 36 for closing its rear end.
    The duct 24 of the head member 20 is extended by a tubular braid 32 to the other elements 26, 28. This tubular braid 32 is permeable to the inert gas, which allows a better distribution of the gases in the housings of said elements 26, 28.
    According to other embodiments of the protection device 10, the latter does not comprise a tubular braid 32. The diffusion of the gases into the housings of the elements 26, 28 is only through the conduit 24 of the head element 20 which opens towards the housing of said elements 26, 28.
    The protection device 10 is designed to adapt to the geometry of the weld to be made, that is to say to the shape of the edges of the parts to be welded.
    For this, each element 20, 26, 28 of the protection device 10 is articulated with respect to each element 20, 26, 28 which is adjacent thereto. The articulation of two adjacent elements 20, 26, 28 consists of a ball joint, allowing the relative movement of the two elements in all directions.
    This articulation comprises a hemispherical housing 38 which is formed in a first of the two elements, and which opens longitudinally towards the second of the two elements. The joint also comprises an insert 40 which is also hemispherical in shape and dimensions complementary to the dimensions of the hemispherical housing 38, that is to say of the same diameter. The insert 40 is formed in the second of the two elements and is oriented towards the first of the two elements. The insert 40 is thus received inside the associated hemispherical housing 38 and is free to rotate around their common center.
    Here, according to the embodiment shown in the figures, the hemispherical housing 38 is open longitudinally towards the rear and the insert 40 is oriented towards the front.
    Also, in the protective device 10, each intermediate element 26 comprises a hemispherical housing 38 at a longitudinal end, here the rear longitudinal end, and it also comprises an insert 40 at the other longitudinal end, here the front longitudinal end .
    In addition, all the intermediate elements 26 are identical, that is to say that each has a hemispherical housing and an insert 40. The front element 20 comprises for its part only a hemispherical housing 38 which is intended to receive the insert 40 of the intermediate element located longitudinally foremost and the rear element comprises an insert 40 which is received in the hemispherical housing 38 of the intermediate element 26 located longitudinally rearmost.
    The elements 20, 26, 28 are held in the coupled position with each other, that is to say that each insert 40 is held longitudinally in the associated hemispherical housing 38, by means of cables 42, 44.
    Each cable 42, 44 extends along the protection device 10 and is connected to each element. Each end of the cables 42, 44 is fixed to the front element 20 or to the rear element 28, for example by means of clamping screws 46.
    A first cable 42 extends above the intermediate elements 26 and each intermediate element 26 has an upper pin 48 which is pierced and which is crossed by the first cable 42.
    The second cable 44 extends through each element of the protection device 10, preferably through the housing 30 of each element.
    Thus, all the elements of the protective device are free to pivot relative to each other in all directions, which allows the protection device 10 to take any configuration and at any time during a welding step parts 14.
    Also, when the protective device 10 is deformed, that is to say that some or all elements rotate relative to each other, one or the other of the two cables 42, 44 is deformed freely, while the other cable 42, 44 remains in tension, thus preventing each insert 40 of an element 26, 28 out of the associated hemispherical housing 38.
    According to an alternative embodiment of the protection device 10, the articulation of two adjacent elements 20, 26, 28 consists of a pivot joint, allowing the two said adjacent elements to pivot freely relative to each other around the axis of the pivot.
    According to a first embodiment of this variant, the pivot axis is vertical, which allows the welding of flat surfaces for which the weld bead is curved.
    According to a second embodiment of this variant, the pivot axis is horizontal, which allows the welding of curved parts 14.
    Since the elements 20, 26, 28 of the protection device 10 are free to move relative to each other, it is preferable to guide them during the displacement of the protective device relative to the parts 14 to be welded, the 12. This prevents them from coming into contact with the weld seam and also optimizes the protection.
    Such a solution is particularly advantageous in the case of a non-rectilinear or circular weld seam (for example sinusoidal or helical). The installation shown in FIGS. 4 and 5 comprises a system 50 for guiding the protection device 10 along the weld bead 12.
    This guide system 50 consists of two lateral guides 52 which are arranged on either side of the edges 14a opposite the two parts 14 to be welded, at which said edges 14a, the weld bead is made .
    These guides 52 here consist of two plates, each of which is mounted on a part to be welded, and whose edge 54 of a guide 52, is located near and at a distance from the edge 14a of the part to be welded 14 associated.
    This distance between the respective edges 14a, 54 of the workpiece 14 and the guide 52 associated therewith is defined as a function of the width of the protection device. This makes it possible to have a distance between the edges 54 vis-à-vis the guides 52 substantially equal to the width of the protection device 10.
    The distance between the edge 54 of a guide 52 and the edge 14a of the associated part 14 is constant over the entire extent of the edge 14a to be welded.
    Thus, if the edge 14a of the part 14 is non-rectilinear, as has been said previously, for a non-rectilinear weld bead 12, the edge 54 of the guide 52 is also non-rectilinear and thus has the same profile as the edge 14a of the piece 14 and therefore the same curvature as the weld bead 12 to be made.
    Also, to promote the guiding of the protective device, the edges 54 of the guides 52 are bevelled.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    A gaseous diffusion weld shielding device (10) having a plurality of elements (20, 26, 28) mounted one after the other and hinged to each other, and having, from front to back according to the alignment of the elements a front element (20) which is intended to receive a welding head; intermediate elements (26) mounted one behind the other and behind the front element (20), a rear element (28) which is mounted behind the last intermediate element (26), each element (20, 26, 28). ) having a housing (30) open downwards and to each other adjacent element (20, 26, 28), the housing assembly (30) forming a gas diffusion chamber (16) which is connected to a source of protection gas supply, characterized in that two adjacent elements (20, 26, 28) are articulated with each other and are free to rotate relative to each other, irrespective of the operating conditions of the protective device (10).
    [2" id="c-fr-0002]
    2. Protection device according to claim 1 wherein said two adjacent elements are articulated with each other by a ball joint, and are free to rotate relative to each other in all directions.
    [3" id="c-fr-0003]
    3. Protective device (10) according to the preceding claim, characterized in that a first element (20, 26, 28) among two adjacent elements (20, 26, 28) comprises a housing (38) of hemispherical shape which is open towards the second element (20, 26, 28) of said two adjacent elements and the second element (20, 26, 28) comprises an insert (40) of hemispherical shape complementary to the hemispherical housing (38) of the first element, and said insert (40) is received in the hemispherical housing (38) of the first member.
    [4" id="c-fr-0004]
    4. Protection device (10) according to the preceding claim, characterized in that a first end of each intermediate element (26) comprises a hemispherical housing 38) and the second end of said intermediate element (26) comprises an insert (40). hemispherical shape.
    [5" id="c-fr-0005]
    Protective device (10) according to claim 3 or 4, characterized in that the front element (20) has a hemispherical housing (38) in which the insert (40) of the adjacent intermediate element (26) is received. and the rear member (28) has an insert (40) which is received in the hemispherical housing (38) of the adjacent intermediate member (26).
    [6" id="c-fr-0006]
    6. Protection device (10) according to any one of claims 3 to 5, characterized in that it comprises means (42, 44) for holding the insert (40) of each element (20, 26, 28) in the hemispherical housing (38) of the adjacent member (20, 26, 28).
    [7" id="c-fr-0007]
    7. Protection device (10) according to the preceding claim, characterized in that it comprises at least one cable (42, 44) forming a link which is fixed to the front element (20) and the rear element (28). ) and which cooperates with each intermediate element (26), to prevent any spacing of the elements (20, 26, 28) relative to each other, forwards or backwards.
    [8" id="c-fr-0008]
    8. Protection device (10) according to the preceding claim, characterized in that it comprises two cables (42, 44) offset vertically relative to each other, each end of each cable (42, 44). is attached to the front member (20) or rear member (28) and a segment of each of which (42, 44) is connected to an intermediate member (26).
    [9" id="c-fr-0009]
    A two-piece welding apparatus (14a) for two-piece welding (14) having a welding head, a welding protection device (10) according to any one of the preceding claims, wherein the welding head is mounted on the front element (20) of the welding protection device (10), and comprises a system (50) for guiding the protection device (10) along the edges facing each other. parts to be welded.
    [10" id="c-fr-0010]
    10. Installation according to the preceding claim, characterized in that the guide system (50) consists of two guides (52) arranged on either side of the edges (14a) vis-à-vis parts (14) to welding, each guide (52) having an edge (54) near the edges (14a) vis-à-vis parts (14) to be welded which is similar in profile to the profile of said edges (14a) parts (14) welding.
    [11" id="c-fr-0011]
    11. Installation according to the preceding claim, characterized in that the edge (54) of each guide (52) is beveled.
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    同族专利:
    公开号 | 公开日
    FR3038857B1|2018-03-09|
    CN106346117A|2017-01-25|
    US20170014936A1|2017-01-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SU1556838A1|1988-07-01|1990-04-15|Предприятие П/Я А-1944|Gas-shielded device for welding|
    EP0452213A1|1990-04-12|1991-10-16|Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma"|Welds protection device by gaseous diffusion and method for carrying out|
    US5256847A|1992-08-12|1993-10-26|Intevep, S.A.|TIG shielded atmosphere welding system|
    FR2809038A1|2000-05-16|2001-11-23|De Ballensee Pierre Ballan|Modular auto-magnetic manual back support system for supporting welds during end-to-end or angled electric arc welding of steel plates|
    US20050205647A1|2004-03-18|2005-09-22|Pei-Chung Wang|Supplying shielding gas|
    SE368923B|1972-12-29|1974-07-29|S Sandstroem|
    US4179059A|1977-04-06|1979-12-18|Santa Fe International Corporation|Automatic pipe welding apparatus and method|
    US4599505A|1983-03-31|1986-07-08|The United States Of America As Represented By The Secretary Of The Navy|Flexible trailing shield for welding reactive metals|
    US4540879A|1983-06-09|1985-09-10|Ideal Carbide Die Co.|Alignment tooling for metal cylinder welding machines|
    US4839489A|1988-02-16|1989-06-13|The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration|Trailer shield assembly for a welding torch|
    US4866236A|1988-04-20|1989-09-12|The United States Of America As Represented By The Secretary Of The Navy|Flexible extendable backing shield for welding reactive metals|
    WO1997011283A2|1995-09-19|1997-03-27|Norbert Noetzold|Push-pull transmission system made from mouldings|
    US5793009A|1996-06-20|1998-08-11|General Electric Company|Apparatus for joining metal components using broad, thin filler nozzle|
    AU7175398A|1997-05-02|1998-11-27|Medtronic, Inc.|Adjustable supporting bracket having plural ball and socket joints|
    EP1176902B1|1999-04-30|2008-10-08|Johan Adolf BYSTRÖM|A joint device|
    US6854768B2|2001-04-26|2005-02-15|Innatech, Llc|Fluid conduits and method of manufacturing same|US20180331569A1|2017-05-15|2018-11-15|Vertiv Srl|Technique For Lowering Inrush Current To An Uninterruptible Power Supply With A Transformer|
    CN111545903A|2020-05-13|2020-08-18|南京航空航天大学|Laser welding protective gas device for titanium alloy annular welding seam|
    CN112719530A|2021-01-24|2021-04-30|福州大学|Combined gas protection device for electric arc additive manufacturing and using method|
    法律状态:
    2016-07-21| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-20| PLSC| Publication of the preliminary search report|Effective date: 20170120 |
    2017-07-24| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-25| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-21| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-27| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556678A|FR3038857B1|2015-07-15|2015-07-15|DEVICE FOR PROTECTING GAS DIFFUSION WELDING|
    FR1556678|2015-07-15|FR1556678A| FR3038857B1|2015-07-15|2015-07-15|DEVICE FOR PROTECTING GAS DIFFUSION WELDING|
    US15/210,490| US20170014936A1|2015-07-15|2016-07-14|Weld protecting device by gas diffusion|
    CN201610561328.XA| CN106346117A|2015-07-15|2016-07-15|Weld protecting device by gas diffusion|
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