• 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 present invention discloses an improved welding apparatus for welding flanges to steel pipes. Conventional automatic welding device is a lot of time for loading / unloading the steel pipe was low productivity even with the use of a welding robot, in the present invention, at least two positioners are installed on the turntable while loading / unloading during welding in the welding position The loading and unloading or reversing of the steel pipes in loading allows for a significant improvement in the productivity of flange welding. The present invention also discloses a configuration in which two welding robots can be welded simultaneously to the inside and the outside of the flange, and also the configuration of the steel pipe loading portion suitable for loading / unloading of the steel pipe.
    公开号:KR19990032820A
    申请号:KR1019970053973
    申请日:1997-10-21
    公开日:1999-05-15
    发明作者:강규원；강병철；김충영
    申请人:이해규；삼성중공업 주식회사；
    IPC主号:
    专利说明:

    Flange welding device of steel pipe
    TECHNICAL FIELD The present invention relates to the manufacture of steel pipes, and more particularly, to an apparatus for welding a flange to an end portion of a steel pipe.
    Small-diameter steel pipes and steel pipes to a certain size can be manufactured by die casting or casting, but when the diameter of steel pipes is larger than several tens of centimeters like steel pipes used in large plants or ships, It can only be manufactured by.
    In order to connect and connect such a steel pipe, a flange must be attached to the end thereof, and the flange F is welded to the steel pipe P by being caught at the end of the steel pipe P as shown in FIG. 1. In this case, when the thickness of the flange F is small, only the outer periphery may be improved and welded at once, but when the thickness is increased, the flange F must be welded to the inner perimeter.
    Here, the welding on the outside of the flange (F) is a butt welding, but the inside is a fillet welding and the steel pipe (P) is generally used in a high pressure fluid environment in the plant or ship, so the flange (F) and the steel pipe ( Internal and external welding of P) shall have uniform welding quality over its entire circumference.
    Accordingly, the welding device as shown in Figure 2 is used for welding the flange (F) of the steel pipe (P) to be used in ships, plants or iron fittings (鐵 構 物).
    In FIG. 2, a conventional welding apparatus includes a positioner 1 installed on a table T to support a steel pipe P, and a welding robot 2 for welding a flange F to the steel pipe P. Equipped. First, referring to the configuration of the positioner 1, the rotary drive unit 11 installed on the table T is provided with a rotary plate 12 and a plurality of, preferably three linear motors radially installed on the rotary plate 12 ( Each linear motor 13 moves the toe 14 in the radial direction of the rotating plate 12 to open and close the toe 14.
    On the other hand, on the opposite side of the positioner 1, the welding robot 2 comprised from the articulated robot is provided preferably.
    In the welding apparatus as described above, the welding robot 2 rotates the steel pipe P while the rotary driving unit 11 rotates the steel pipe P while the tow 14 of the rotating plate 12 is opened and closed to hold the inner or outer circumference of the steel pipe P. Welding head 2a welds flange F to steel pipe P. Reference numeral 15 is a counter weight to prevent the welding device from falling down or sagging due to the weight of the steel pipe P when the steel pipe P is installed.
    By the way, when welding the steel pipe (P) by the welding device such that the inside and the outside of the flange (F) should be welded, when installing the steel pipe (P) on the rotating plate (11) as shown outside and then again To reverse this, the installation can be welded inside.
    This work requires more time for the installation and reinstallation of the steel pipe (P) than the actual time required for welding, and as a result, the use of expensive welding robots (2) guarantees only welding quality. There is no improvement because there is no improvement.
    In addition, since the steel pipe P is large as described above, the loading / unloading requires the use of a plurality of workers, a hoist or a crane. In order to secure space for the welding robot, the welding robot 2 should not only retreat a considerable distance and move forward in the work, but also the work speed will be slow because the welding work on the inside and the outside of the flange F must be performed alternately. Loading / unloading is also inconvenient.
    In addition, in order to install the steel pipe P having a considerable length and weight so as to be supported by the tow 14 of the linear motor 13, the steel pipe P must be installed with a hoist or a crane to lift the plurality of workers. There is a need for and installation work is very cumbersome.
    In view of such a conventional problem, an object of the present invention is to provide a welding device that can significantly improve the productivity of the flange welding operation of large steel pipes.
    1 is a partial cutaway view of a steel pipe showing a flange welding process,
    Figure 2 is a side view showing the configuration of a conventional flange welding apparatus,
    Figure 3 is a plan view showing the configuration of the welding apparatus of the present invention,
    Figure 4 (A) and (B) is a side view and a plan view showing a steel pipe loading portion of the welding apparatus of the present invention.
    <Description of Symbols for Main Parts of Drawings>
    P: steel pipe F: flange
    I: welding positon II: loading / unloading position
    1: positioner 2: welding robot
    3: Turn-table 4: Steel pipe loading part
    In order to achieve the above object, the welding apparatus according to the present invention is provided with at least two or more positioners on a turn-table rotating between a welding position in which a welding robot is installed and a loading / unloading position in which a steel pipe loading unit is installed. This positioner is moved to the welding position by loading the steel pipe with the steel pipe loading part in a positioner located at the loading / unloading position and rotating the turntable. To return to the loading / unloading position, characterized in that for unloading the steel pipe to the steel pipe loading portion.
    This makes it very easy for the operator to support and disconnect the steel pipe to the positioner in the loading / unreading position, and the welding / robot welding work can be performed simultaneously without interruption. Can be greatly improved.
    According to one feature of the present invention, the welding position is provided with two welding robots for welding the inside and the outside of the flange, respectively, and further improves the welding productivity by performing the welding inside and outside the flange.
    As a result, the productivity of the flange welding operation is greatly improved, and the welding quality can be improved.
    (Example)
    Such specific features and advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.
    In Fig. 3, at least two or more plurality of positioners 1 are provided on the rotatable turntable 3, and in this embodiment, a welding position I provided with a welding robot 2 on the outside of the turntable 3; The loading / unloading position II in which the steel pipe loading part 4 is installed is set.
    Here, since the positioner 1 itself is substantially the same as the conventional structure described with reference to FIG. 2, redundant descriptions thereof will be omitted.
    Since the turntable 3 includes two positioners 1, the turntables 3 are rotated by 180 ° to selectively position the two positioners 1 at the welding position I and the loading / unloading position II. In this case, the circular shape of the turntable 3 means that the rotational operation is performed, and in practice, the turntable 3 may be configured by, for example, a rectangular table (shown by a dashed line) in which two positioners 1 may be installed.
    Looking at this operation from the loading of the steel pipe (P), the steel pipe (P) the flange (F) is tangled is loaded into the positioner (1) located in the loading / unloading position (II) of the upper left in the drawing. . Here, the configuration of the steel pipe loading unit 4 installed in the loading / unloading position II may be various, such as a hoist, but a preferred configuration thereof will be described later with reference to FIG. 4.
    When loading of the steel pipe P to the positioner 1 on the loading / unloading position II is completed, the turntable 3 rotates to move the positioner 1 to the welding position I where the welding robot 2 is located. Let's do it. Then, the welding robot 2 moves forward to weld the flange F to the steel pipe P. When the welding is completed, the turntable 3 is rotated again so that the positioner 1 located at the welding position I is completed. The steel pipe P is moved to the loading / unloading position II while supporting the steel pipe P, where the steel pipe P is unloaded.
    If this operation is repeated, the loading / unloading position (II) during loading or unloading position (II) of the other steel pipe (P) during the welding position (I) of the welding of the steel pipe (P) or the change of direction inside and outside As a result, the welding operation can be carried out continuously without interruption, thereby enabling a great improvement in productivity.
    Preferably, the welding robot 2 is comprised as it welds the inner side and outer side of the flange F, respectively. Then, welding can be performed once, and thus better welding productivity can be achieved.
    4 (A) and (B) show a preferred configuration of the steel pipe loading portion 4 suitable for being used for loading or unloading or reversing the steel pipe P in the loading / unloading position II.
    The steel pipe loading part 4 is comprised with the support plate 44 on the elevating mechanism 43 provided on the trolley | bogie 42 which travels on the guide rail 41. As shown in FIG. Preferably, a pad portion 45 for accommodating the steel pipe P is provided on the support plate 44.
    On the other hand, the lifting mechanism 43 is preferably configured such that at least two pairs of levers 43b are combined in an X-shape to move up and down by the actuator 43a.
    Also preferably, the guide rail 41 on which the bogie 42 of the steel pipe loading part 4 travels is upwardly installed at a predetermined inclination angle θ toward the positioner 1 as shown.
    Accordingly, after loading the steel pipe (P) on the support plate 44 of the steel pipe loading portion (4) by a hoist or a crane (not shown), and guide rail (42) in a state in which the lifting mechanism (43) is raised. 41. When pushed onto 41, the steel pipe P enters into or out of the toe 14 of the rotating plate 12 with a slight inclination angle θ and is opened and closed by the linear motor 13 to open and close the positioner ( The steel pipe P may be supported, i.e. loaded, on the rotating plate 12 of 1).
    This reverse operation of the unloading and redirection of the steel pipe P is achieved.
    According to the present invention as described above, the welding operation for welding the flange to the steel pipe can be made continuously and its loading and unloading or direction can also be made very easily and quickly, the present invention greatly improves the productivity of flange welding It works.
    权利要求:
    Claims (5)
    [1" claim-type="Currently amended] An apparatus for welding a flange to a steel pipe with a welding robot while supporting and rotating the steel pipe on a rotating plate of a positioner having a rotary driving part, wherein the positioner is provided with a plurality of two or more, and the welding position and the steel pipe loading in which the welding robot is installed. Flange welding device for steel pipes, characterized in that installed on the turntable to rotate between the loading / unloading positions installed additionally.
    [2" claim-type="Currently amended] According to claim 1, The welding robot is a flange welding apparatus of the steel pipe, characterized in that composed of two to weld the inner and outer sides of the flange, respectively.
    [3" claim-type="Currently amended] 2. A flange welding apparatus according to claim 1, wherein the steel pipe loading portion includes a trolley for traveling on a guide rail, a support plate for supporting the steel pipe, and a lifting mechanism for lifting the support plate up and down with respect to the trolley. .
    [4" claim-type="Currently amended] 4. The apparatus of claim 3, wherein the elevating mechanism includes at least two pairs of levers provided between the support plate and the bogie and crossed in an X shape, and an actuator for elevating the support plate.
    [5" claim-type="Currently amended] The flange welding apparatus according to any one of claims 1 to 3, wherein the guide rail is inclined upward at a predetermined inclination angle toward the rotation plate of the positioner.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-21|Application filed by 이해규, 삼성중공업 주식회사
    1997-10-21|Priority to KR1019970053973A
    1999-05-15|Publication of KR19990032820A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970053973A|KR19990032820A|1997-10-21|1997-10-21|Flange welding device of steel pipe|
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