A laser-arc hybrid welding device for a can body

Abstract

The application belongs to the technical field of composite welding and specifically discloses a laser-arc composite welding device for a tank body, which comprises a rack, a clamp provided on the rack and used for clamping a tank body to be welded, a composite welding mechanism provided on the rack and located above the clamp, wherein the composite welding mechanism comprises a laser part used for providing laser and a TIG welding part used for providing an electric arc, and the laser part and the TIG welding part are used for applying laser and the electric arc on the tank body to be welded to form a welding molten pool. The composite welding device can efficiently and high-quality realize splash-free welding operation of the tank body and form a high-quality girth weld on the tank body.

Description

Technical Field

[0001] This application belongs to the field of composite welding technology, and more specifically, relates to a laser-arc composite welding device for tanks. Background Technology

[0002] Welding is a process of joining two or more materials together by means of heating or other methods. Welding can be used to join materials such as metals and plastics, and is widely used in manufacturing, construction, aerospace, and other fields.

[0003] In related technologies, when traditional welding processes such as electric arc welding and resistance welding are used to weld materials, the molten metal or welding materials often splatter out of the weld area. The generation of spatter will affect the welding quality and may cause defects such as uneven weld quality, porosity, and slag inclusions, which urgently need to be improved. Utility Model Content

[0004] In view of the deficiencies or improvement needs of the prior art, this application provides a laser-arc hybrid welding device for tanks, which aims to solve the problem of spatter that is easy to occur during the welding process.

[0005] This application provides a laser-arc hybrid welding device for tank bodies, comprising: frame; A clamp is provided on the frame for holding the tank to be welded; A composite welding mechanism is mounted on the frame and located above the fixture. The composite welding mechanism includes a laser section for providing a laser and a TIG welding section for providing an electric arc. The laser section and the TIG welding section are used to apply the laser and the electric arc to the tank to be welded to form a weld pool.

[0006] Compared with the prior art, the above-described technical solution conceived in this application provides a laser and an electric arc respectively for the laser part and TIG welding part of the composite welding mechanism during welding operations to form a weld pool on the tank to be welded. The device adopts a laser-TIG composite welding process, which effectively increases the size of the weld pool of the tank to be welded, increases the weld penetration, and has no obvious spatter during the welding process. Moreover, compared with traditional electric arc welding and resistance welding, the quality of the welded products of this device is greatly improved, and the welding efficiency is significantly improved, typically increasing the welding efficiency by 5-6 times.

[0007] As a further preferred embodiment, the fixture includes a three-jaw chuck, and a power component for driving the three-jaw chuck to rotate is mounted on the frame.

[0008] As a further preferred embodiment, the three-jaw chuck has a support plate on its main body for supporting the tank to be welded.

[0009] As a further preferred embodiment, the axis of rotation of the tank to be welded, held by the fixture, intersects with the horizontal plane.

[0010] As a further preferred embodiment, the frame is provided with a base plate for mounting the composite welding mechanism, and the frame is provided with a base plate adjustment module for driving the base plate to adjust its position.

[0011] As a further preferred embodiment, the substrate is provided with a position adjustment structure for adjusting the linear displacement of the laser portion on the surface of the substrate.

[0012] As a further preferred embodiment, a mounting plate is connected between the substrate and the TIG welding portion, and a mounting plate adjustment module for adjusting the position of the mounting plate is provided between the mounting plate and the substrate.

[0013] As a further preferred embodiment, the mounting plate is provided with a wire feeder; The laser section is located between the TIG welding section and the wire feeder, or The TIG welding section is located between the laser section and the wire feeder, or The wire feeder is located between the laser section and the TIG welding section.

[0014] As a further preferred embodiment, the mounting plate is provided with a rotating component, and the TIG welding portion is fixed to the drive end of the rotating component.

[0015] As a further preferred embodiment, the mounting plate is provided with a cantilever mechanism having multiple degrees of freedom, and the wire feeder is installed at the movable end of the cantilever mechanism.

[0016] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. The laser section and TIG welding section of the composite welding mechanism provide laser and electric arc respectively to form a weld pool on the tank to be welded, realizing laser-TIG composite welding. This composite welding process effectively increases the size of the weld pool of the tank to be welded, increases the weld penetration, and has no obvious spatter during the welding process. Compared with traditional electric arc welding and resistance welding, the welding quality is greatly improved and the welding efficiency is significantly increased.

[0017] 2. This device is applicable to welding operations on various types of tanks. It holds the tank with a three-jaw chuck, and the three-jaw chuck is driven to rotate by a power component, enabling the composite welding mechanism to weld high-quality circumferential welds on the objects to be welded.

[0018] 3. The laser and TIG welding parts in the composite welding mechanism can be adjusted as a whole in the frame. The TIG welding part can also be adjusted separately from the laser part. Furthermore, the arrangement of the TIG welding part, the laser part, and the wire feeder can also be adjusted, making the welding angle, range, and weld point guidance direction of the composite welding device flexible and adjustable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a composite welding device provided in an embodiment of this application; Figure 2 This is a structural schematic diagram of the frame, fixture, and power component provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the substrate adjustment module, substrate, and composite welding mechanism provided in the embodiments of this application; Figure 4 This is a schematic diagram of the connection structure of the substrate and the composite welding mechanism provided in the embodiments of this application; Figure 5 This is a schematic diagram of the connection structure of the substrate, wire feeder, and TIG welding part provided in the embodiments of this application.

[0020] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Frame; 2. Fixture; 2-1. Three-jaw chuck; 2-2. Support plate; 2-3. Positioning ring; 3. Power component; 4. Base plate; 5. Base plate adjustment module; 5-1. Electric rotary table; 5-2. Dial; 5-3. X-axis linear slide; 5-4. Y-axis linear slide; 5-5. Z-axis linear slide; 6. TIG welding section; 7. Wire feeder; 8. Mounting plate; 9. Mounting plate adjustment module; 9-1. Left and right position adjustment mechanism; 9-2. Front and rear position adjustment mechanism; 10. Rotating component; 11. Cantilever mechanism; 11-1. First cantilever; 11-2. Second cantilever; 11-3. Swing seat; 11-4. Adjustment seat; 12. Position adjustment structure; 13. Laser section; 14. Wire harness rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses a laser-arc hybrid welding device for tanks. (Refer to...) Figure 1-5The laser-arc hybrid welding device for the tank includes a frame 1, on which a clamp 2 and a hybrid welding mechanism are mounted. The clamp 2 is used to hold the tank to be welded. The hybrid welding mechanism is located above the clamp 2 and includes a laser part 13 and a TIG welding part 6. The laser part 13 is used to provide laser light, and the TIG welding part 6 is used to provide an electric arc. The laser part 13 and the TIG welding part 6 are used to apply the laser and the electric arc together to the welding area of ​​the tank to be welded to form a weld pool, thereby realizing laser-TIG hybrid welding.

[0024] Furthermore, such as Figure 1 , Figure 2 As shown, the frame 1 is made of a frame structure, the outer side of which is covered with a plate-shaped shell, and the frame 1 has a top platform and side slopes; wherein, the composite welding mechanism is set at the top platform of the frame 1, and the clamp 2 is set at the side slope of the frame 1.

[0025] Furthermore, such as Figure 2 As shown, in this embodiment, the fixture 2 is preferably a three-jaw chuck 2-1 rotatably mounted on the frame 1. The three-jaw chuck 2-1 can clamp the can to be welded at multiple points, improving the stability of the clamping. The end face of the three-jaw chuck 2-1 intersects the horizontal plane, so that the axis of rotation of the can to be welded, clamped by the fixture 2, will intersect the horizontal plane, facilitating the welding operation. In other embodiments, the fixture 2 can be any other tooling fixture capable of stably clamping the can.

[0026] Furthermore, the main body of the three-jaw chuck 2-1 has a support plate 2-2 for supporting the object to be welded; the support plate 2-2 has a clearance notch for avoiding the jaws of the three-jaw chuck 2-1; and a positioning ring 2-3 is fixed on the support plate 2-2, which can pre-position the circumferential surface of the tank to be welded, thereby improving the installation stability of the tank.

[0027] Furthermore, the frame 1 is equipped with a power component 3 for driving the clamp 2 to adjust its position. The power component 3 is preferably a motor, which is installed in the frame 1 and drives the three-jaw chuck 2-1 to rotate. With this design, the device is particularly suitable for welding pressure vessel tanks; when the three-jaw chuck 2-1 clamps the tank and is driven to rotate by the motor, the composite welding mechanism can form a high-quality circumferential weld on the tank.

[0028] Furthermore, the laser part 13 in the composite welding mechanism preferably includes a laser welding head, and the TIG welding part 6 is preferably a welding torch, wherein the tungsten electrode of the welding torch can form a high-temperature electric arc after being energized.

[0029] Furthermore, the composite welding apparatus also includes a base plate 4 for mounting the composite welding mechanism, and a base plate adjustment module 5 for driving the base plate 4 to adjust its position on the frame 1 is provided on the frame 1.

[0030] like Figure 3 , Figure 4 As shown, in this embodiment, the substrate adjustment module 5 includes a three-axis motion platform and an electric rotary table 5-1. The three-axis motion platform is mounted on the top surface of the frame 1. The electric rotary table 5-1 is mounted on the end worktable of the three-axis motion platform, and its rotation axis is parallel to the horizontal plane. A scale 5-2 is fixed on the rotary table 5-1. The substrate 4 has a through hole and is fitted onto the rotating spindle of the electric rotary table 5-1 through the through hole. A first pointer pointing to the marking line of the scale 5-2 is fixed on the substrate 4. The substrate 4 and the scale 5-2 are fixed to each other and can be adjusted by relative rotation.

[0031] Furthermore, such as Figure 3 As shown, the three-axis motion platform includes an X-axis linear slide 5-3, a Y-axis linear slide 5-4, and a Z-axis linear slide 5-5. The X-axis linear slide 5-3 is bolted to the top platform of the frame 1. Horizontal plates are fixed to the top of the X-axis linear slide 5-3's worktable and the bottom of the Y-axis linear slide 5-4's base, and these two horizontal plates are locked together with bolts. A triangular support plate is installed between the Y-axis linear slide 5-4's worktable and the Z-axis linear slide 5-5's base. The triangular support plate is connected to both the Y-axis linear slide 5-4's worktable and the Z-axis linear slide 5-5's base with bolts, thus forming the entire three-axis motion platform.

[0032] To save costs, in this embodiment, the X-axis linear slide 5-3 and Y-axis linear slide 5-4 are driven by a handle, while the Z-axis linear slide 5-5 is electrically driven. Of course, in other embodiments, each linear slide can also be electrically driven or driven by a handle, as long as the usage requirements are met.

[0033] Furthermore, such as Figure 3-5 As shown, to achieve relative rotation adjustment of the substrate 4, multiple arc-shaped holes are evenly distributed on the surface of the dial 5-2, with the center of the dial 5-2 as the center. A threaded hole is provided on the surface of the substrate 4 corresponding to each arc-shaped hole. By passing a bolt through the arc-shaped hole on the surface of the dial 5-2 and installing the bolt thread into the threaded hole, adjusting the tightness between the bolt head and the outer surface of the dial 5-2 allows for locking and rotation adjustment of the substrate 4 at the dial 5-2.

[0034] Furthermore, such as Figure 4As shown, a position adjustment structure 12 is provided on the substrate 4 for adjusting the linear displacement of the laser part 13 of the composite welding mechanism on the surface of the substrate 4, so as to realize the individual adjustability of the laser part 13.

[0035] Specifically, the position adjustment structure 12 includes a slide rail portion and a slider portion. The slide rail portion is fixed to the surface of the substrate 4, and a threaded hole is formed in the slide groove of the slide rail portion. The slider portion is slidably installed in the slide groove, and an oblong hole is formed on the surface of the slider, the length direction of which is consistent with the length direction of the slide groove. A bolt is inserted through the oblong hole on the surface of the slider, and the shank of the bolt is installed in the threaded hole, the head of which abuts against and fixes the slider. The laser portion 13 of the composite welding mechanism is fixed to the slider by bolts.

[0036] When the position of the laser part 13 on the substrate 4 needs to be adjusted, the user can loosen the bolt at the waist-shaped hole of the slider to release the lock between the slider and the slide rail; after the slider slides to the appropriate position, tighten the bolt at the waist-shaped hole to lock the slider. To facilitate the user's control of the displacement adjustment distance of the position adjustment structure 12, the slider part and the slide rail part of the position adjustment structure 12 are provided with scales for reading the relative displacement distance between the two.

[0037] Furthermore, a mounting plate 8 is connected between the substrate 4 and the TIG welding part 6 of the composite welding mechanism. A mounting plate adjustment module 9 is provided between the mounting plate 8 and the substrate 4 to adjust the position of the mounting plate 8, so as to realize the individual adjustability of the TIG welding part 6.

[0038] Furthermore, such as Figure 4 As shown, the mounting plate adjustment module 9 includes a left-right position adjustment mechanism 9-1 and a front-back position adjustment mechanism 9-2 that are perpendicular to each other. The composition and adjustment mechanism of the left-right position adjustment mechanism 9-1 and the front-back position adjustment mechanism 9-2 are the same as those of the position adjustment structure 12. The slide rail portion of the left-right position adjustment mechanism 9-1 is connected to the surface of the substrate 4, and the left-right position adjustment mechanism 9-1 and the position adjustment structure 12 are located on the same side surface of the substrate 4. The slide rail portion of the front-back position adjustment mechanism 9-2 is fixed to the slider portion of the left-right position adjustment mechanism 9-1, and the slider portion of the front-back position adjustment mechanism 9-2 is fixed to the mounting plate 8.

[0039] It should be noted that in other embodiments, the mounting plate adjustment module 9 may also employ a three-axis motion slide, a multi-degree-of-freedom robotic arm, etc.

[0040] Furthermore, the mounting plate 8 is also equipped with a wire feeder 7, with one of the laser section 13, the TIG welding section 6, and the wire feeder 7 located between the other two. That is, the laser section 13 is located between the TIG welding section 6 and the wire feeder 7, or the TIG welding section 6 is located between the laser section 13 and the wire feeder 7, or the wire feeder 7 is located between the laser section 13 and the TIG welding section 6. With this design, the welding form of the composite welding process is flexible and diverse, and can be flexibly adjusted according to user needs.

[0041] Furthermore, a rotating component 10 is provided on the mounting plate 8, and the TIG welding part 6 is fixed to the drive end of the rotating component 10. Preferably, the rotating component 10 is an electric rotary table, on which a scale bar is fixed, and a pointer pointing to the scale bar is fixed on the mounting plate 8. The rotation angle of the TIG welding part 6 is visually displayed by the cooperation between the pointer and the scale bar.

[0042] Furthermore, a cantilever mechanism 11 is provided on the mounting plate 8. The cantilever mechanism 11 has multiple degrees of freedom, and the wire feeder 7 is installed at the movable end of the cantilever mechanism 11.

[0043] Specifically, such as Figure 5 As shown, the cantilever mechanism 11 includes a first cantilever 11-1, a second cantilever 11-2, a swing seat 11-3, and an adjusting seat 11-4 connected in series. The first cantilever 11-1 at the beginning is connected to the mounting plate 8, and the adjusting seat 11-4 at the end is used to install the wire feeder 7.

[0044] Furthermore, the mounting plate 8 has threaded holes, and the first cantilever 11-1 and the second cantilever 11-2 have oblong holes at their beginning and threaded holes at their ends. The swing seat 11-3 is made of an L-shaped right-angle plate, with an arc-shaped oblong hole corresponding to the right-angle section of the second cantilever 11-2, and an oblong hole corresponding to the right-angle section of the adjusting seat 11-4. The length direction of the oblong hole in the adjusting seat 11-4 is consistent with the thickness direction of the substrate 4. The adjusting seat 11-4 also has threaded holes.

[0045] By using various types of holes, the mounting plate 8 is connected to the first cantilever 11-1, the first cantilever 11-1 to the second cantilever 11-2, the second cantilever 11-2 to the swing seat 11-3, and the swing seat 11-3 to the adjusting seat 11-4 via bolts. Through the bolts and the corresponding holes, stable installation and relative position adjustment of the components are achieved. The position adjustment method is basically the same as the adjustment method of the slide rail and slider parts in the position adjustment structure 12.

[0046] When using this device, the user can also adjust the connection direction of the cantilever mechanism 11 according to needs. For example, the end of the first cantilever 11-1 away from the mounting plate 8 can be adjusted to the left side of the mounting plate 8; or the position of the first cantilever 11-1 can be changed so that the end of the first cantilever 11-1 away from the mounting plate 8 is adjusted to the right side of the mounting plate 8, thereby adjusting the arrangement of the laser part 13, the TIG welding part 6, and the wire feeder 7. Of course, in other embodiments, the user can also appropriately increase or decrease the number of cantilever arms as needed to change the position adjustment range of the wire feeder 7.

[0047] Furthermore, to prevent the cables used by the various components of the device from interfering with the operation of the device, a cable tie rod 14 is fixed on the substrate 4. The upper end of the cable tie rod 14 is away from the composite welding mechanism and has a cable tie hole for the cable to pass through.

[0048] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0049] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A laser-arc hybrid welding apparatus for a tank body, characterized by comprising: include: Rack (1); A clamp (2) is installed on the frame (1) for holding the tank to be welded; A composite welding mechanism is provided on the frame (1) and located above the fixture (2). The composite welding mechanism includes a laser part (13) for providing laser and a TIG welding part (6) for providing electric arc. The laser part (13) and the TIG welding part (6) are used to apply laser and electric arc to the tank to be welded to form a weld pool.

2. The laser-arc hybrid welding apparatus of claim 1, wherein, The clamp (2) includes a three-jaw chuck (2-1), and a power component (3) for driving the three-jaw chuck (2-1) to rotate is mounted on the frame (1).

3. The laser-arc hybrid welding apparatus of claim 2, wherein, The three-jaw chuck (2-1) has a support plate (2-2) on its main body for supporting the tank to be welded.

4. The laser-arc hybrid welding apparatus of claim 1, wherein, The axis of rotation of the tank to be welded, held by the clamp (2), intersects the horizontal plane.

5. A laser-arc hybrid welding apparatus for a tank according to any one of claims 1 to 4, wherein The composite welding device also includes a base plate (4) for mounting the composite welding mechanism, and a base plate adjustment module (5) for driving the base plate (4) to adjust its position on the frame (1) is provided on the frame (1).

6. The laser-arc hybrid welding apparatus of claim 5, wherein, The substrate (4) is provided with a position adjustment structure (12) for adjusting the linear displacement of the laser part (13) on the surface of the substrate (4).

7. The laser-arc hybrid welding apparatus of claim 5, wherein, A mounting plate (8) is connected between the substrate (4) and the TIG welding part (6), and a mounting plate adjustment module (9) for adjusting the position of the mounting plate (8) is provided between the mounting plate (8) and the substrate (4).

8. The laser-arc hybrid welding device for tank bodies as described in claim 7, characterized in that, A wire feeder (7) is provided on the mounting plate (8); The laser section (13) is located between the TIG welding section (6) and the wire feeder (7), or The TIG welding section (6) is located between the laser section (13) and the wire feeder (7), or The wire feeder (7) is located between the laser section (13) and the TIG welding section (6).

9. The laser-arc hybrid welding apparatus of claim 7, wherein, The mounting plate (8) is provided with a rotating component (10), and the TIG welding part (6) is fixed to the driving end of the rotating component (10).

10. The laser-arc hybrid welding apparatus of claim 8, wherein, The mounting plate (8) is provided with a cantilever mechanism (11), which has multiple degrees of freedom, and the wire feeder (7) is installed at the movable end of the cantilever mechanism (11).

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