A plasma automatic welding mechanism for photovoltaic steel structure

Abstract

The invention discloses a plasma automatic welding mechanism for photovoltaic steel structures, relates to the field of automatic welding, and solves the problem that the existing plasma automatic welding mechanism is prone to unstable clamping of steel structures. The mechanism comprises: a chassis and a processing table fixedly installed on the top of the chassis, a turntable is rotatably installed on the top of the processing table, a driving frame is installed on the top of the processing table, a welding arm is installed on the output end of the driving frame, and a plasma welding head is fixedly installed on the bottom of the welding arm; the mechanism also comprises: a clamping mechanism, which is used to clamp and position the photovoltaic steel structure on the turntable, and the clamping mechanism is installed on the top of the turntable. The invention uses the clamping mechanism to position photovoltaic steel structures of different lengths and sizes in a multi-point positioning manner, solves the problem that traditional elastic arc plates are prone to unstable clamping and elastic fatigue, and is convenient for loading and unloading, thereby clamping and positioning photovoltaic steel structures of more sizes and improving welding efficiency.

Description

Technical Field

[0001] The invention relates to the field of automatic welding, in particular to a plasma automatic welding mechanism for photovoltaic steel structures. Background Art

[0002] Photovoltaic steel structure refers to the supporting structure of solar photovoltaic panels installed on the roof of a building. It is mainly composed of steel and has excellent strength, stability and wind resistance. This structure can be adjusted according to the shape of the photovoltaic panels and the different roof materials of the building to ensure the safe and stable operation of the photovoltaic system.

[0003] Plasma arc welding refers to a fusion welding method that uses a high-energy-density beam of plasma arc as a welding heat source. It has the characteristics of concentrated energy, high productivity, fast welding speed, small stress and deformation, stable arc, and is suitable for welding thin plates and box materials. It is suitable for welding photovoltaic steel structures. The existing Chinese public patent document: CN117983940B discloses a plasma automatic welding mechanism for steel structures. By setting a clamping component, it not only realizes the clamping of the steel structure, but also can adapt to different types of steel structures for clamping, solves the problem of inconvenient clamping in existing welding equipment, and then facilitates the welding gun body to weld different types of steel structures. However, the arc-shaped elastic plate used to clamp and position the workpiece steel structure requires a large area to be attached to the outer side of the steel structure, and the clamping and positioning of the steel structure depends on the elasticity of the arc-shaped elastic plate. After long-term use, the elastic fatigue of the arc-shaped elastic plate will reduce the clamping force of the steel structure, and unstable clamping is prone to occur. Summary of the invention

[0004] The object of the present invention is to provide a plasma automatic welding mechanism for photovoltaic steel structures to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A plasma automatic welding mechanism for a photovoltaic steel structure comprises: a chassis and a processing table fixedly mounted on the top of the chassis, a turntable rotatably mounted on the top of the processing table for placing and fixing the photovoltaic steel structure and capable of rotating to adjust the angle, a drive frame mounted on the top of the processing table, a welding arm mounted on the output end of the drive frame, a plasma welding head fixedly mounted on the bottom of the welding arm for welding the photovoltaic steel structure on the turntable; further comprising: a clamping mechanism for clamping and positioning the photovoltaic steel structure on the turntable, the clamping mechanism being mounted on the top of the turntable; a material fixing mechanism for positioning the photovoltaic steel structure of a circular structure on the turntable, the material fixing mechanism being mounted on the top of the turntable; a protective mechanism for providing protection for the plasma welding head, the protective mechanism being mounted on the top of the turntable.

[0007] Preferably, the clamping mechanism includes a placement box fixedly installed on the top of the turntable, three screw rods 1 distributed at equal distances are rotatably installed on the inner side of the placement box, screw rods 2 are arranged between adjacent screw rods 1, and the screw rods 2 are rotatably installed on the inner side of the placement box, the number of the screw rods 2 is two, the three screw rods 1 are staggered with the two screw rods 2, the thread directions of the screw rods 1 and the screw rods 2 are opposite, a synchronous belt is rotatably installed between the three screw rods 1 and the two screw rods 2, a driving motor is fixedly installed on the top of the turntable, the output end of the driving motor extends to the inside of the placement box and is fixedly connected to the adjacent screw rod 1, the driving motor drives the corresponding screw rod 1 to rotate, so that the screw rod 1 can pass through the synchronous belt The remaining screw rods 1 and 2 are driven to rotate synchronously. Five moving blocks are arranged on the inner side of the placement box, and the five moving blocks are respectively matched with the three screw rods 1 and the two screw rods 2. When screw rods 1 and screw rods 2 rotate, they can drive the corresponding moving blocks to move along the inner side of the placement box. A sliding rod is fixedly installed on the top of the moving block. A sliding groove is provided on the top of the placement box for the sliding rod to limit the sliding of the sliding rod. A clamping block is arranged on the top of the sliding rod. The clamping block located above the screw rod 1 and the clamping block located above the screw rod 2 are relatively staggered, so that the clamping block above the screw rod 1 and the clamping block above the screw rod 2 move in opposite directions, and a multi-point positioning clamping method is adopted to realize the fixation of photovoltaic steel structures of different shapes.

[0008] Preferably, the material fixing mechanism includes a chassis fixedly mounted on the top of the sliding rod, the top of the chassis contacts with the bottom of the clamping block, a positioning rod is fixedly mounted on the top of the chassis, two symmetrically distributed fixing blocks are fixedly mounted on the outer side of the positioning rod, two vertically distributed slip rings are fixedly mounted between the two fixing blocks, a cylindrical cavity is opened on the inner side of the clamping block for limiting the sliding of the fixing block, so that the clamping block can rotate along the outer side of the fixing block, so that the clamping block can be attached to the outer side of the photovoltaic steel structure, thereby improving the stability of clamping the photovoltaic steel structure, and two symmetrically distributed sleeve blocks are fixedly mounted in the cylindrical cavity of the clamping block, the sleeve block is slidably mounted on the outer side of the slip ring, and four arc springs symmetrically distributed in the center are arranged on the outer side of the slip ring, the arc spring is fixedly mounted between the sleeve block and the fixed block, and the rebound force of the arc spring can be used to facilitate the resetting of the sleeve block.

[0009] Preferably, the protective mechanism includes a protective cover fixedly mounted on the top of the turntable, two symmetrically distributed feed ports are provided on the outer side of the protective cover for putting in and taking out the photovoltaic steel structure, a top cover is provided on the top of the protective cover, a through hole is provided on the top of the top cover for the welding arm to move, so that the welding arm can insert the plasma welding head into the inner side of the protective cover, and a circular opening is provided on the top of the protective cover with a size smaller than the size of the top cover, a mounting frame is fixedly mounted on the top of the top cover, and two symmetrically distributed sliding frames are fixedly mounted on the top of the mounting frame, a sliding column is fixedly mounted on the side of the sliding frame close to the welding arm, a slider is slidably mounted on the outer side of the sliding column, and the sliding column can provide guidance for the movement of the slider, and the slider is fixedly mounted on the outer side of the welding arm, and a positioning spring located on the outer side of the sliding column is fixedly mounted between the slider and the bottom of the sliding frame, so as to push the slider to reset and maintain the contact between the top cover and the protective cover, so as to provide protection for the welding operation of the plasma welding head.

[0010] Preferably, a baffle is fixedly mounted on one side of the placement box close to the drive motor, and the height of the baffle is greater than the height of the placement box, so as to block waste slag during welding.

[0011] Preferably, a baffle is fixedly installed on the outer side of the sliding rod, the length and width of the baffle are greater than the length and width of the slide groove on the placement box, and a long groove for limiting the sliding of the baffle is opened on the top of the placement box. The top of the baffle is on the same horizontal line as the top of the placement box to prevent waste slag during welding from falling into the placement box.

[0012] Preferably, five guide bars are fixedly mounted on the bottom inner wall of the placement box and are respectively located at the bottom of the five moving blocks. The bottom of the moving block is provided with grooves for limiting sliding of the guide bars, thereby improving the smoothness of movement of the moving block.

[0013] Preferably, two symmetrically distributed pulleys are rotatably mounted on the outer side of the clamping block, and anti-slip grooves are provided on the outer side of the pulleys to improve the stability of clamping the photovoltaic steel structure.

[0014] Preferably, a sealing disk is fixedly mounted on the top of the positioning rod, and a circular groove for limiting and inserting the sealing disk is provided on the top of the clamping block, so as to facilitate assembly and protection of the clamping block.

[0015] Preferably, the protective cover and the top cover are both made of protective polycarbonate to ensure the durability and protective effect of the protective cover and the top cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts a clamping mechanism and a multi-point positioning method to position photovoltaic steel structures of different lengths and sizes, thereby solving the problems of unstable clamping and elastic fatigue of traditional elastic arc plates, and facilitating material loading and unloading, thereby clamping and positioning photovoltaic steel structures of more sizes and improving welding efficiency.

[0018] 2. The present invention uses a material fixing mechanism to enable the clamping block to adjust the angle accordingly according to the contact surface between the clamping block and the photovoltaic steel structure when the clamping block contacts the outer side of the photovoltaic steel structure, so that one side of the clamping block is completely attached to the outer side of the photovoltaic steel structure, which is convenient for positioning the photovoltaic steel structure with an arc structure or more inclined surfaces, thereby achieving the effect of stable clamping and positioning.

[0019] 3. The present invention can provide protection for the top of the turntable when the plasma welding head is welding the photovoltaic steel structure through the protective mechanism to prevent waste slag from splashing, facilitate subsequent cleaning, and ensure the displacement adjustment of the welding arm to ensure comprehensive welding of the photovoltaic steel structure, thereby achieving the effect of improving welding safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the turntable and the placement box in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the screw rod 1 and the clamping block in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the baffle bar and the slide bar in the present invention;

[0024] Figure 5 It is a schematic diagram of the chassis and the moving block structure in the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the pulley and the positioning rod in the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the sleeve block and the fixed block in the present invention;

[0027] Figure 8 It is a schematic diagram of the protective cover and top cover structure in the present invention.

[0028] In the figure: 1, chassis; 2, processing table; 3, turntable; 4, drive frame; 5, welding arm; 6, plasma welding head; 7, placement box; 8, screw one; 9, screw two; 10, synchronous belt; 11, driving motor; 12, moving block; 13, slide bar; 14, clamping block; 15, chassis; 16, positioning rod; 17, fixed block; 18, slip ring; 19, sleeve block; 20, arc spring; 21, protective cover; 22, top cover; 23, installation frame; 24, slide frame; 25, slide column; 26, slider; 27, positioning spring; 28, baffle; 29, baffle bar; 30, guide bar; 31, pulley; 32, sealing disk. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative inspiration are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1-Figure 7 The illustrated plasma automatic welding mechanism for photovoltaic steel structure includes a chassis 1 and a processing table 2 fixedly installed on the top of the chassis 1. A turntable 3 is rotatably installed on the top of the processing table 2 for placing and fixing the photovoltaic steel structure and capable of rotating to adjust the angle. A driving frame 4 is installed on the top of the processing table 2. A welding arm 5 is installed on the output end of the driving frame 4. A plasma welding head 6 is fixedly installed on the bottom of the welding arm 5 for welding the photovoltaic steel structure on the turntable 3; it also includes: a clamping mechanism for clamping and positioning the photovoltaic steel structure on the turntable 3, the clamping mechanism is installed on the top of the turntable 3; a material fixing mechanism for positioning the photovoltaic steel structure with a circular structure on the turntable 3, the material fixing mechanism is installed on the top of the turntable 3; a protective mechanism for providing protection for the plasma welding head 6, the protective mechanism is installed on the top of the turntable 3.

[0031] The clamping mechanism includes a placement box 7 fixedly mounted on the top of the turntable 3, three screw rods 8 equidistantly distributed are rotatably mounted on the inner side of the placement box 7, screw rods 2 9 are arranged between adjacent screw rods 1 8, screw rods 2 9 are rotatably mounted on the inner side of the placement box 7, the number of screw rods 2 9 is two, the three screw rods 1 8 and the two screw rods 2 9 are staggered, the thread directions of the screw rods 1 8 and the screw rods 2 9 are opposite, a synchronous belt 10 is rotatably mounted between the three screw rods 1 8 and the two screw rods 2 9, a driving motor 11 is fixedly mounted on the top of the turntable 3, the driving motor 11 can rotate forward and reversely, the output end of the driving motor 11 extends to the inside of the placement box 7 and is fixedly connected to the adjacent screw rods 1 8, the driving motor 11 drives the corresponding screw rod 8 to rotate, so that the screw rod 8 can be driven by the synchronous belt 10 The remaining screw rods 8 and screw rods 2 9 are driven to rotate synchronously. Five moving blocks 12 are arranged on the inner side of the placement box 7. The five moving blocks 12 cooperate with three screw rods 18 and two screw rods 2 9 respectively. When screw rods 18 and screw rods 2 9 rotate, they can drive the corresponding moving blocks 12 to move along the inner side of the placement box 7. A slide bar 13 is fixedly installed on the top of the moving block 12. A slide groove for limiting the sliding of the slide bar 13 is opened on the top of the placement box 7. A clamping block 14 is arranged on the top of the slide bar 13. The clamping block 14 located above the screw rod 1 8 and the clamping block 14 located above the screw rod 2 9 are relatively staggered, so that the clamping block 14 above the screw rod 1 8 and the clamping block 14 above the screw rod 2 9 move in opposite directions, and a multi-point positioning clamping method is adopted to realize the fixation of photovoltaic steel structures of different shapes;

[0032] When the photovoltaic steel structure is placed on the top of the placement box 7, the driving motor 11 can drive the corresponding screw 8 to rotate, so that the screw 18 drives the other two screws 18 and the two screws 2 9 to rotate synchronously through the synchronous belt 10, and the screw 1 8 and the screw 2 9 respectively drive the corresponding moving blocks 12 to move along the inner side of the placement box 7, and the moving block 12 drives the clamping block 14 to move synchronously through the sliding rod 13. Since the thread directions of screw 1 8 and screw 2 9 are opposite, the moving direction of the clamping block 14 on screw 1 8 is opposite to the moving direction of the clamping block 14 on screw 2 9, and both move toward the outside of the photovoltaic steel structure, so as to perform multi-point clamping and positioning of the photovoltaic steel structure, solve the problems of unstable clamping and elastic fatigue of traditional elastic arc plates, and facilitate loading and unloading, thereby clamping and positioning photovoltaic steel structures of more sizes and improving welding efficiency.

[0033] The material fixing mechanism includes a chassis 15 fixedly mounted on the top of the slide rod 13, the top of the chassis 15 contacts the bottom of the clamping block 14, a positioning rod 16 is fixedly mounted on the top of the chassis 15, two symmetrically distributed fixed blocks 17 are fixedly mounted on the outer side of the positioning rod 16, two vertically distributed slip rings 18 are fixedly mounted between the two fixed blocks 17, a cylindrical cavity for limited sliding of the fixed block 17 is provided on the inner side of the clamping block 14, so that the clamping block 14 can rotate along the outer side of the fixed block 17, so that the clamping block 14 can be attached to the outer side of the photovoltaic steel structure, thereby improving the stability of clamping the photovoltaic steel structure, two symmetrically distributed sleeve blocks 19 are fixedly mounted in the cylindrical cavity of the clamping block 14, the sleeve block 19 is slidably mounted on the outer side of the slip ring 18, four arc springs 20 symmetrically distributed are arranged on the outer side of the slip ring 18, the arc spring 20 is fixedly mounted between the sleeve block 19 and the fixed block 17, and the resilience of the arc spring 20 can be used to facilitate the reset of the sleeve block 19;

[0034] When the outer side of the photovoltaic steel structure is an inclined surface or an arc surface, one end of the clamp block 14 contacts the outer side of the photovoltaic steel structure, so that the clamp block 14 drives the sleeve block 19 to slide along the outer side of the slip ring 18, and the sleeve block 19 compresses and stretches the multiple arc springs 20 on the slip ring 18 to achieve the swing of the clamp block 14, so that one side of the clamp block 14 is completely attached to the outer side of the photovoltaic steel structure. When the clamp block 14 is away from the photovoltaic steel structure, the rebound force of the arc spring 20 is used to reset the clamp block 14, which is convenient for positioning the photovoltaic steel structure with more arc structures or inclined surfaces, thereby achieving the effect of stable clamping and positioning.

[0035] Working principle: first, the user places the photovoltaic steel structure on the top of the placement box 7, and starts the driving motor 11. The driving motor 11 drives the corresponding screw rod 8 to rotate, so that the screw rod 18 drives the other two screw rods 8 and two screw rods 2 9 to rotate synchronously through the synchronous belt 10. The screw rod 18 and the screw rod 2 9 respectively drive the corresponding moving blocks 12 to move along the inner side of the placement box 7. The moving block 12 drives the slide bar 13 to move along the slide groove on the placement box 7, so that the slide bar 13 drives the clamping block 14 to move synchronously. Since the thread directions of the screw rod 18 and the screw rod 2 9 are opposite, the moving direction of the clamping block 14 on the screw rod 18 is opposite to the moving direction of the clamping block 14 on the screw rod 2 9. Therefore, the five clamping blocks 14 all move to the outside of the photovoltaic steel structure. At this time, one end of the clamping block 14 contacts the outside of the photovoltaic steel structure, so that the clamping block 14 drives the sleeve block 19 along The clamp 14 slides along the outer side of the slip ring 18, and the sleeve block 19 compresses and stretches the multiple arc springs 20 on the slip ring 18 to realize the swing of the clamp 14. The clamp 14 can be adjusted to swing accordingly according to the shape of the outer side of the photovoltaic steel structure, so that one side of the clamp 14 is completely attached to the outer side of the photovoltaic steel structure. Then, the drive frame 4 is started, and the drive frame 4 drives the welding arm 5 to move downward. The plasma welding head 6 at the bottom of the welding arm 5 is close to the welding point of the photovoltaic steel structure. The drive frame 4 cooperates with the rotatable turntable 3 to fully weld the welding points of the photovoltaic steel structure. Finally, the drive frame 4 is started again to reset the plasma welding head 6, and the drive motor 11 rotates in the opposite direction to make the clamp 14 away from the welded photovoltaic steel structure, so that the user can take it, thereby achieving the effect of stable clamping and positioning and improving welding efficiency.

[0036] Example 2: Please refer to Figure 1 and Figure 8 , this embodiment further explains the first embodiment, the protection mechanism in the figure includes a protection cover 21 fixedly mounted on the top of the turntable 3, two symmetrically distributed feed ports are provided on the outer side of the protection cover 21 for putting in and taking out the photovoltaic steel structure, a top cover 22 is provided on the top of the protection cover 21, a through hole is provided on the top of the top cover 22 for the welding arm 5 to move, so that the welding arm 5 can insert the plasma welding head 6 into the inner side of the protection cover 21, a circular opening with a size smaller than the size of the top cover 22 is provided on the top of the protection cover 21, and a mounting frame 2 is fixedly installed on the top of the top cover 22 3. Two symmetrically distributed sliding frames 24 are fixedly installed on the top of the installation frame 23. A sliding column 25 is fixedly installed on the side of the sliding frame 24 close to the welding arm 5. A slider 26 is slidably installed on the outer side of the sliding column 25. The sliding column 25 can provide guidance for the movement of the slider 26. The slider 26 is fixedly installed on the outer side of the welding arm 5. A positioning spring 27 located on the outer side of the sliding column 25 is fixedly installed between the slider 26 and the bottom of the sliding frame 24, which is convenient for pushing the slider 26 to reset and keep the top cover 22 in contact with the protective cover 21, so as to provide protection for the welding operation of the plasma welding head 6.

[0037] In this embodiment: the user can place the photovoltaic steel structure above the turntable 3 through the two feed ports on the protective cover 21, and the top cover 22 can provide protection for the top of the protective cover 21. When the driving frame 4 is running, it can drive the welding arm 5 to move downward, so that the plasma welding head 6 enters the inner side of the protective cover 21 to weld the photovoltaic steel structure. At the same time, the welding arm 5 drives the two sliders 26 to move downward along the corresponding slide column 25 to compress the positioning spring 27. The top cover 22 can maintain contact with the top of the protective cover 21. When the driving frame 4 drives the welding arm 5 to move horizontally, the welding arm 5 drives the slide frame 24 to move synchronously through the slider 26, so that the slide frame 24 drives the top cover 22 to move along the top of the protective cover 21, maintaining the protection of the plasma welding head 6 by the top cover 22, reducing the harm of strong light to the user during welding, thereby achieving the effect of improving welding safety.

[0038] Example 3: Please refer to Figure 5-Figure 8 , this embodiment further explains other embodiments. A baffle 28 is fixedly installed on one side of the placement box 7 close to the drive motor 11 in the figure. The height of the baffle 28 is greater than the height of the placement box 7, which is convenient for blocking waste slag during welding. A baffle 29 is fixedly installed on the outer side of the slide bar 13. The length and width of the baffle 29 are both greater than the length and width of the slide groove on the placement box 7. A long groove for limiting the sliding of the baffle 29 is opened on the top of the placement box 7. The top of the baffle 29 is on the same horizontal line as the top of the placement box 7 to prevent waste slag during welding from falling into the placement box 7. Five guide bars 30 located at the bottom of the five moving blocks 12 are fixedly installed on the inner wall of the bottom of the placement box 7. A groove for limiting the sliding of the guide bar 30 is opened at the bottom of the moving block 12 to improve the stability of the movement of the moving block 12.

[0039] In this embodiment: the baffle 28 can provide protection for the drive motor 11 to prevent splashing waste slag from sticking to the drive motor 11 during welding, and when the moving block 12 drives the slide rod 13 to move, it can drive the baffle 29 to move along the long groove at the top of the placement box 7, and provide shielding for the slide groove on the placement box 7 to prevent splashing waste slag from falling into the placement box 7. The moving block 12 can move along the outer side of the guide bar 30, thereby improving the stability of the movement of the moving block 12, preventing the moving block 12 from being dislocated after long-term use, and improving the durability of the moving block 12.

[0040] Example 4: Please refer to Figure 5-Figure 8This embodiment further explains other embodiments. Two symmetrically distributed pulleys 31 are rotatably installed on the outer side of the clamping block 14 in the figure. Anti-slip grooves are provided on the outer side of the pulley 31 to improve the stability of clamping the photovoltaic steel structure. A sealing disk 32 is fixedly installed on the top of the positioning rod 16. A circular groove is provided on the top of the clamping block 14 for limiting and inserting the sealing disk 32, which is convenient for assembling and protecting the clamping block 14. The protective cover 21 and the top cover 22 are both made of protective polycarbonate to ensure the durability and protective effect of the protective cover 21 and the top cover 22.

[0041] In the present embodiment: the clamp 14 can clamp and position the outer side of the photovoltaic steel structure through the pulley 31, and when the clamp 14 swings, it can drive the pulley 31 to roll along the outer side of the photovoltaic steel structure, so that the two pulleys 31 on the clamp 14 can quickly contact and position with the outer side of the photovoltaic steel structure. The protective cover 21 and the top cover 22 can both be made of protective polycarbonate material to ensure the heat resistance of the protective cover 21 and the top cover 22, thereby improving the safety during welding with the plasma welding head 6.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plasma automatic welding mechanism for photovoltaic steel structure, characterized in that: include: A machine box (1) and a processing table (2) fixedly mounted on the top of the machine box (1); a turntable (3) is rotatably mounted on the top of the processing table (2); a driving frame (4) is mounted on the top of the processing table (2); a welding arm (5) is mounted on the output end of the driving frame (4); and a plasma welding head (6) is fixedly mounted on the bottom of the welding arm (5); Also includes: A clamping mechanism is used to clamp and position the photovoltaic steel structure on the rotating disk (3), the clamping mechanism is installed on the top of the rotating disk (3), the clamping mechanism comprises a placement box (7) fixedly installed on the top of the rotating disk (3), three screw rods (8) equidistantly distributed are rotatably installed on the inner side of the placement box (7), screw rods (9) are arranged between adjacent screw rods (8), the screw rods (9) are rotatably installed on the inner side of the placement box (7), the number of the screw rods (9) is two, the thread directions of the screw rods (8) and the screw rods (9) are opposite, a synchronous belt (10) is rotatably installed between the three screw rods (8) and the two screw rods (9), and the top of the rotating disk (3) is fixedly installed with a A driving motor (11), wherein the output end of the driving motor (11) extends to the interior of the placement box (7) and is fixedly connected to the adjacent screw rod 1 (8); five moving blocks (12) are arranged on the inner side of the placement box (7); the five moving blocks (12) respectively cooperate with the three screw rods 1 (8) and the two screw rods 2 (9); a sliding rod (13) is fixedly installed on the top of the moving block (12); a sliding groove for limiting the sliding of the sliding rod (13) is provided on the top of the placement box (7); a clamping block (14) is arranged on the top of the sliding rod (13); the clamping block (14) located above the screw rod 1 (8) and the clamping block (14) located above the screw rod 2 (9) are relatively staggered; A material fixing mechanism is used to position the photovoltaic steel structure of the circular structure on the turntable (3), the material fixing mechanism is installed on the top of the turntable (3), the material fixing mechanism comprises a chassis (15) fixedly installed on the top of the slide bar (13), the top of the chassis (15) is in contact with the bottom of the clamping block (14), a positioning rod (16) is fixedly installed on the top of the chassis (15), two symmetrically distributed fixing blocks (17) are fixedly installed on the outer side of the positioning rod (16), and the two fixing blocks (17) are fixed between them. Two vertically distributed slip rings (18) are installed, the inner side of the clamping block (14) is provided with a cylindrical cavity for limiting the sliding of the fixed block (17), two symmetrically distributed sleeve blocks (19) are fixedly installed in the cylindrical cavity of the clamping block (14), the sleeve blocks (19) are slidably installed on the outer side of the slip ring (18), and four centrally symmetrically distributed arc springs (20) are arranged on the outer side of the slip ring (18), and the arc springs (20) are fixedly installed between the sleeve blocks (19) and the fixed block (17); A protection mechanism, used for providing protection for the plasma welding head (6), the protection mechanism being mounted on the top of the turntable (3), the protection mechanism comprising a protection cover (21) fixedly mounted on the top of the turntable (3), two symmetrically distributed feed ports being provided on the outer side of the protection cover (21), a top cover (22) being provided on the top of the protection cover (21), a through hole being provided on the top of the top cover (22) for the welding arm (5) to move, and a circular opening being provided on the top of the protection cover (21) with a size smaller than that of the top cover (22). A mounting frame (23) is fixedly mounted on the top of the top cover (22); two symmetrically distributed sliding frames (24) are fixedly mounted on the top of the mounting frame (23); a sliding column (25) is fixedly mounted on a side of the sliding frame (24) close to the welding arm (5); a sliding block (26) is slidably mounted on the outer side of the sliding column (25); the sliding block (26) is fixedly mounted on the outer side of the welding arm (5); and a positioning spring (27) located on the outer side of the sliding column (25) is fixedly mounted between the sliding block (26) and the bottom of the sliding frame (24).

2. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: A baffle (28) is fixedly mounted on one side of the placement box (7) close to the drive motor (11), and the height of the baffle (28) is greater than the height of the placement box (7).

3. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: A stop bar (29) is fixedly mounted on the outer side of the slide bar (13); the length and width of the stop bar (29) are greater than the length and width of the slide groove on the placement box (7); a long groove for limiting the sliding of the stop bar (29) is provided on the top of the placement box (7); the top of the stop bar (29) is on the same horizontal line as the top of the placement box (7).

4. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: Five guide bars (30) are fixedly mounted on the inner wall of the bottom of the placement box (7) and are located at the bottoms of the five moving blocks (12) respectively. The bottoms of the moving blocks (12) are provided with grooves for limiting the sliding of the guide bars (30).

5. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: Two symmetrically distributed pulleys (31) are rotatably mounted on the outer side of the clamping block (14), and anti-slip grooves are provided on the outer side of the pulleys (31).

6. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: A sealing disc (32) is fixedly mounted on the top of the positioning rod (16), and a circular groove for limiting and inserting the sealing disc (32) is provided on the top of the clamping block (14).

7. The plasma automatic welding mechanism for photovoltaic steel structure according to claim 1, characterized in that: The protective cover (21) and the top cover (22) are both made of protective polycarbonate.

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