A welding device for steel structure production

Abstract

The present invention relates to the technical field of steel structure welding, and discloses a welding device for steel structure production, including: a mounting table and a mounting ring fixedly connected to the mounting table, wherein a transmission groove is formed at the top of the mounting ring; the welding feeding and splicing mechanism is arranged in the mounting groove, and the welding feeding and splicing mechanism is used for automatically feeding and splicing the connecting rods of the frame. For this welding device for steel structure production, the horizontal connecting rods of the frame are accurately placed into the positioning and fixing mechanism by the welding feeding mechanism to position and fix the connecting rods, and then the spliced frame is welded and fixed by the welding mechanism. Subsequently, the vertical connecting rods are accurately placed on the formed frame after welding, and then the vertical connecting rods are automatically welded by the welding mechanism. This process is repeated in sequence, thereby realizing the automatic assembly and welding of the steel structure frame without manual operation, greatly improving the welding efficiency of the steel structure frame.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure welding, and particularly relates to a welding device for steel structure production. Background Technique

[0002] A steel structure frame is a frame made of steel materials, which has a wide range of uses and is often used to make products such as walls, elevators, and the main body of houses. The steel structure frame not only has good vertical load-bearing capacity but also good lateral force resistance, and has good resistance to wind loads, seismic actions, etc. The steel structure frame is generally welded from two kinds of steel materials with different orientations, namely transverse steel and longitudinal steel. During the production and manufacturing process of the steel structure frame, the transverse connecting rod and the longitudinal connecting rod need to be welded firmly to form the steel structure frame.

[0003] In the existing steel structure frame welding process, manual labor is mostly used to place the connecting rod into the positioning fixture for positioning and fixing, and then hold the welding torch to weld the fixed formed frame. Then, the longitudinal connecting rod is placed on the formed frame for calibration and positioning, and then welded. The automation degree of welding the steel structure frame is relatively low, resulting in a low welding efficiency of the frame. At the same time, manual positioning wastes a lot of time. At the same time, due to manual splicing during the splicing process, it is difficult to control the overall splicing accuracy, which easily leads to poor splicing accuracy and reduces the quality of the welded steel structure frame. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding device for steel structure production to solve the deficiencies in the above background technique.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A welding device for steel structure production includes: an installation table and an installation ring fixedly connected to the installation table, and a transmission groove is opened at the top of the installation ring;

[0007] A welding feeding and splicing mechanism, which is arranged in the installation groove and is used for automatically feeding and splicing the connecting rods of the frame;

[0008] A welding mechanism, which is arranged on the installation table and is used for automatically welding the spliced frame;

[0009] A positioning and fixing mechanism, which is arranged on the installation table and is used for fixing the frame.

[0010] As a further solution of the present invention: The welding and feeding splicing mechanism includes a transmission gear ring rotatably connected to the mounting ring. The inner surface of the transmission gear ring is drivingly connected to a driving mechanism connected to the mounting table. The driving mechanism is used to drive the transmission gear ring to rotate. The top of the transmission gear ring is fixedly connected to a mounting plate. The top of the mounting plate is rotatably connected to a first mounting shaft. The outer surface of the first mounting shaft is drivingly connected to a first transmission mechanism connected to the mounting plate. The first transmission mechanism is used to drive the first mounting shaft to rotate. The top end of the first mounting shaft is fixedly connected to a mounting frame. A second mounting shaft is rotatably connected inside the mounting frame. A transmission frame is fixedly sleeved on the outer surface of the second mounting shaft. The outer surface of the second mounting shaft is drivingly connected to a second transmission mechanism fixedly sleeved on the mounting frame. The second transmission mechanism is used to drive the second mounting shaft to rotate;

[0011] The top of the transmission frame is fixedly connected to a first driving motor. The output end of the first driving motor is fixedly connected to a first threaded rod rotatably connected to the transmission frame through a coupling. A slider is in threaded cooperation with the outer surface of the first threaded rod. One side of the slider is fixedly connected to a mounting disk. One side of the mounting disk is rotatably connected to a third mounting shaft. A third transmission mechanism connected to the mounting disk is fixedly sleeved on the outer surface of the third mounting shaft. The third transmission mechanism is used to drive the third mounting shaft to rotate. One end of the third mounting shaft is fixedly connected to a first electric telescopic rod. One end of the first electric telescopic rod is fixedly connected to a clamping frame. A second electric telescopic rod is fixedly connected inside the clamping frame. One end of the second electric telescopic rod is fixedly connected to a first clamping block. A connecting rod feeding mechanism is arranged on the mounting table. The connecting rod feeding mechanism is used to automatically feed the connecting rod raw materials of the frame.

[0012] As a further solution of the present invention: The driving mechanism includes a driving motor fixedly connected to the mounting table. The output end of the driving motor is fixedly connected to a driving shaft through a coupling. A driving gear meshing with the transmission gear ring is fixedly sleeved on the outer surface of the driving shaft.

[0013] As a further solution of the present invention: The first transmission mechanism includes a first motor fixedly connected to the mounting plate. The output end of the first motor is fixedly connected to a first rotating shaft through a coupling. A first gear is fixedly sleeved on the outer surface of the first rotating shaft. A second gear fixedly sleeved on the first mounting shaft is fixedly sleeved on the outer surface of the first gear.

[0014] As a further solution of the present invention: The second transmission mechanism includes a third electric telescopic rod fixedly connected to the mounting frame. One end of the third electric telescopic rod is fixedly connected to a transmission rack slidably connected to the mounting frame. A third gear fixedly sleeved on the second mounting shaft is meshed with one side of the transmission rack.

[0015] As a further solution of the present invention: the third transmission mechanism includes a second motor fixedly connected to the mounting plate, the output end of the second motor is fixedly connected to the second rotating shaft through a coupling, the outer surface of the second rotating shaft is fixedly sleeved with a fourth gear, and the outer surface of the fourth gear is meshingly connected with a fifth gear fixedly sleeved with the third mounting shaft.

[0016] As a further solution of the present invention: the connecting rod feeding mechanism includes two feeding boxes fixedly connected to the mounting table, both sides of the feeding boxes are rotatably connected with second threaded rods, the two second threaded rods are connected by a transmission wheel and a transmission belt, one end of one of the second threaded rods is fixedly connected to a second transmission motor fixedly connected to the feeding box through a coupling, and the outer surface of the second threaded rod is threadedly matched with a push plate slidably connected to the feeding box.

[0017] As a further solution of the present invention: the welding mechanism includes a mounting frame fixedly connected to the mounting table, a fourth electric telescopic rod is fixedly connected to the mounting frame, the bottom end of the fourth electric telescopic rod is fixedly connected to a mechanical arm through a connecting plate, one end of the mechanical arm is fixedly connected to a welding head, and the welding head is connected to the welding machine body.

[0018] As a further solution of the present invention: the positioning and fixing mechanism includes a fifth electric telescopic rod fixedly connected to the mounting table, the top of the fifth electric telescopic rod is fixedly connected to a discharge tray, the top of the discharge tray is fixedly connected to multiple sixth electric telescopic rods, and one end of the sixth electric telescopic rod is fixedly connected to a second clamping block.

[0019] As a further solution of the present invention: a rubber buffer pad is fixedly connected to one side of the second clamping block.

[0020] Beneficial effects of the present invention:

[0021] (1) The horizontal connecting rods of the frame are accurately placed into the positioning and fixing mechanism through the welding feeding mechanism to position and fix the connecting rods, and then the spliced frame is welded and fixed through the welding mechanism. Then the vertical connecting rods are accurately placed on the welded forming frame, and then the vertical connecting rods are automatically welded by the welding mechanism, and the process is repeated in sequence, thereby implementing the automatic assembly and welding of the steel structure frame without manual operation, which greatly improves the welding efficiency of the steel structure frame;

[0022] (2) The driving mechanism drives the transmission gear ring to rotate, thereby driving the transmission frame to rotate. Subsequently, through the mutual cooperation of each transmission mechanism, the clamping frame is driven to move, so that the first clamping block in the clamping frame clamps and picks up the frame connecting rod in the feeding box, and at the same time accurately splices it, greatly improving the splicing accuracy of the steel structure frame and further improving the welding quality of the steel structure frame.

[0023] (3) By respectively placing a plurality of horizontal connecting rods and vertical connecting rods into two feeding boxes, and then the feeding mechanism in the feeding box automatically feeds the connecting rods. Subsequently, the feeding and welding mechanism automatically picks up the materials and places them on the placing tray for accurate positioning and fixing, further improving the automation degree of the splicing of the steel structure frame, and at the same time improving the installation accuracy of the frame base and ensuring the subsequent splicing accuracy. Brief Description of the Drawings

[0024] The present invention will be further described below with reference to the drawings.

[0025] Figure 1 is the first three-dimensional view of the external structure of the present invention;

[0026] Figure 2 is the second three-dimensional view of the external structure of the present invention;

[0027] Figure 3 is the third three-dimensional view of the external structure of the present invention;

[0028] Figure 4 is the fourth three-dimensional view of the external structure of the present invention;

[0029] Figure 5 is the present invention Figure 2 enlarged view of A in;

[0030] Figure 6 is the present invention Figure 3 enlarged view of B in;

[0031] Figure 7 is the present invention Figure 3 enlarged view of C in;

[0032] Figure 8 is the present invention Figure 4 enlarged view of D in.

[0033] In the figure: 1, mounting table; 2, mounting ring; 3, transmission groove; 11, transmission gear ring; 12, mounting plate; 13, first mounting shaft; 14, mounting frame; 15, second mounting shaft; 16, transmission frame; 17, first transmission motor; 18, first threaded rod; 19, slider; 190, mounting disc; 191, third mounting shaft; 192, first electric telescopic rod; 193, clamping frame; 194, second electric telescopic rod; 195, first clamping block; 21, driving motor; 22, driving shaft; 23, driving gear; 31, first motor; 32, first rotating shaft; 33, first gear; 34, second gear; 41, third electric telescopic rod; 42, transmission rack; 43, third gear; 51, second motor; 52, second rotating shaft; 53, fourth gear; 54, fifth gear; 61, feeding box; 62, second threaded rod; 63, second transmission motor; 64, push plate; 71, mounting bracket; 72, fourth electric telescopic rod; 73, robotic arm; 74, welding head; 81, fifth electric telescopic rod; 82, blanking disc; 83, sixth electric telescopic rod; 84, second clamping block. Detailed implementation manners

[0034] Embodiment 1

[0035] Please refer to Figures 1-8 As shown in the figure, the present invention is a welding device for steel structure production, including a mounting table 1. A mounting ring 2 is fixedly connected to the mounting table 1. A transmission groove 3 is opened at the top of the mounting ring 2. A welding and feeding mechanism is arranged in the transmission groove 3. The welding and feeding mechanism is used for automatically feeding and splicing the connecting rods of the frame. A welding mechanism is arranged on the mounting table 1. The welding mechanism is used for welding and fixing the spliced frame. A positioning and fixing mechanism is arranged on the mounting table 1. The positioning and fixing mechanism is used for fixing the frame.

[0036] The horizontal connecting rod of the frame is accurately placed into the positioning and fixing mechanism by the welding and feeding mechanism to position and fix the connecting rod. Subsequently, the spliced frame is welded and fixed by the welding mechanism. Then, the vertical connecting rod is accurately placed on the formed frame after welding. Subsequently, the vertical connecting rod is automatically welded by the welding mechanism. This process is repeated in sequence, thereby implementing the automatic assembly and welding of the steel structure frame without manual operation, greatly improving the welding efficiency of the steel structure frame.

[0037] Embodiment 2

[0038] On the basis of Embodiment 1, please refer to Figures 2-8As shown in the figure, the welding and feeding splicing mechanism includes a transmission gear ring 11 rotatably connected to the mounting ring 2. The inner surface of the transmission gear ring 11 is drivingly connected to a driving mechanism connected to the mounting table 1. The driving mechanism is used to drive the transmission gear ring 11 to rotate. The driving mechanism includes a driving motor 21 fixedly connected to the mounting table 1. The driving motor 21 is controlled by a PLC programming program, and can control the driving motor 21 to rotate forward and backward and the rotation angle. The output end of the driving motor 21 is fixedly connected to a driving shaft 22 through a coupling. A driving gear 23 meshingly connected to the transmission gear ring 11 is fixedly sleeved on the outer surface of the driving shaft 22. By driving the driving shaft 22 to rotate by the driving motor 21, the transmission gear ring 11 is driven to rotate by the driving gear 23. A mounting plate 12 is fixedly connected to the top of the transmission gear ring 11. A first mounting shaft 13 is rotatably connected to the top of the mounting plate 12. A first transmission mechanism connected to the mounting plate 12 is drivingly connected to the outer surface of the first mounting shaft 13. The first transmission mechanism is used to drive the first mounting shaft 13 to rotate. The first transmission mechanism includes a first motor 31 fixedly connected to the mounting plate 12. The first motor 31 is controlled by a PLC programming program, and can control the first motor 31 to rotate forward and backward and the rotation angle. The output end of the first motor 31 is fixedly connected to a first rotating shaft 32 through a coupling. A first gear 33 is fixedly sleeved on the outer surface of the first rotating shaft 32. A second gear 34 fixedly sleeved on the first mounting shaft 13 is fixedly sleeved on the outer surface of the first gear 33. By driving the first rotating shaft 32 to rotate by the first motor 31, the first mounting shaft 13 is driven to rotate by the first gear 33 and the second gear 34. A mounting frame 14 is fixedly connected to the top of the first mounting shaft 13. A second mounting shaft 15 is rotatably connected inside the mounting frame 14. A transmission frame 16 is fixedly sleeved on the outer surface of the second mounting shaft 15. A second transmission mechanism fixedly sleeved on the mounting frame 14 is drivingly connected to the outer surface of the second mounting shaft 15. The second transmission mechanism is used to drive the second mounting shaft 15 to rotate. The second transmission mechanism includes a third electric telescopic rod 41 fixedly connected to the mounting frame 14. One end of the third electric telescopic rod 41 is fixedly connected to a transmission rack 42 slidably connected to the mounting frame 14. A third gear 43 fixedly sleeved on the second mounting shaft 15 is meshingly connected to one side of the transmission rack 42. By driving the transmission rack 42 to move by the third electric telescopic rod 41, the third gear 43 is driven to rotate, and the third gear 43 drives the second mounting shaft 15 to rotate;

[0039] A first transmission motor 17 is fixedly connected to the top of the transmission frame 16, and an output end of the first transmission motor 17 is fixedly connected to a first threaded rod 18 rotatably connected to the transmission frame 16 through a coupling. A slider 19 is threadedly matched on the outer surface of the first threaded rod 18, and a mounting plate 190 is fixedly connected to one side of the slider 19, and a third mounting shaft 191 is rotatably connected to one side of the mounting plate 190. A third transmission mechanism connected to the mounting plate 190 is fixedly sleeved on the outer surface of the third mounting shaft 191, and the third transmission mechanism is used to drive the third mounting shaft 191 to rotate. The third transmission mechanism includes a second motor fixedly connected to the mounting plate 190 51, the second motor 51 is controlled by a PLC programming program, and the second motor 51 can be controlled to rotate forward and reverse and rotate at an angle. The output end of the second motor 51 is fixedly connected to the second rotating shaft 52 through a coupling, and the outer surface of the second rotating shaft 52 is fixedly sleeved with a fourth gear 53, and the outer surface of the fourth gear 53 is meshedly connected with a fifth gear 54 fixedly sleeved with the third installation shaft 191. The second rotating shaft 52 is driven to rotate by the second motor 51, and the second rotating shaft 52 drives the third installation shaft 191 to rotate through the fourth gear 53 and the fifth gear 54. A section of the third installation shaft 191 is fixedly connected to the first electric telescopic rod 1 92, one end of the first electric telescopic rod 192 is fixedly connected to a clamping frame 193, a second electric telescopic rod 194 is fixedly connected inside the clamping frame 193, one end of the second electric telescopic rod 194 is fixedly connected to a first clamping block 195, a connecting rod feeding mechanism is provided on the mounting platform 1, the connecting rod feeding mechanism is used to automatically feed the connecting rod raw material of the frame, the connecting rod feeding mechanism includes two feeding boxes 61 fixedly connected to the mounting platform 1, both sides of the feeding box 61 are rotatably connected to the second threaded rod 62, the two second threaded rods 62 are connected by a transmission wheel and a transmission belt, one end of one of the second threaded rods 62 is connected to the mounting platform 1, and the second threaded rod 62 is connected to the mounting platform 1. A second transmission motor 63 fixedly connected to the feed box 61 is fixedly connected through a coupling. The second transmission motor 63 is controlled by a PLC programming program, and can control the second transmission motor 63 to rotate forward and backward and at a rotation angle. The outer surface of the second threaded rod 62 is threadedly matched with a push plate 64 slidingly connected to the feed box 61. The welding mechanism includes a mounting frame 71 fixedly connected to the mounting table 1, and a fourth electric telescopic rod 72 is fixedly connected to the mounting frame 71. The bottom end of the fourth electric telescopic rod 72 is fixedly connected to a mechanical arm 73 through a connecting plate, and one end of the mechanical arm 73 is fixedly connected to a welding head 74, and the welding head 74 is connected to the welding machine body.

[0040] The driving mechanism drives the transmission gear ring 11 to rotate. The transmission gear ring 11 drives the mounting plate 12 to rotate. The mounting plate 12 drives the first mounting shaft 13 and the mounting frame 14 to rotate. The mounting frame 14 drives the second mounting shaft 15 and the transmission frame 16 to rotate. At the same time, the first driving motor 17 drives the first threaded rod 18 to rotate. The first threaded rod 18 drives the slider 19 to move up and down. The slider 19 drives the mounting disc 190 and the third mounting shaft 191 to move. The third mounting shaft 191 drives the first electric telescopic rod 192 and the clamping frame 193 to move, so that the clamping frame 193 moves to the discharging position of the feeding box 61 equipped with the horizontal connecting rod. Subsequently, the feeding mechanism supplies the cross bar from the feeding box 61. Then, the second electric telescopic rod 194 in the clamping frame 193 drives the first clamping block 195 to move. The first clamping block 195 clamps and fixes the horizontal connecting rod for material taking. Then, the first threaded rod 18 drives the slider 19 to move upward. At the same time, the driving mechanism drives the transmission gear ring 11 to rotate. At the same time, the third driving mechanism drives the third mounting shaft 191 to rotate. The third mounting shaft 191 drives the first electric telescopic rod 192 and the clamping frame 193 to rotate to a horizontal position. At the same time, the fifth electric telescopic rod 81 drives the discharging disc 82 to move downward. The discharging disc 82 drives the sixth electric telescopic rod 83 and the second clamping block 84 to move downward. Then, the second driving mechanism drives the second mounting shaft 15 to flip 90°. Then, the first electric telescopic rod 192 drives the clamping frame 193 to move, so that the clamped horizontal connecting rod is placed on the second clamping block 84 on the discharging disc 82. Then, the sixth electric telescopic rod 83 drives the second clamping block 84 to clamp and fix the horizontal connecting rod. This process is repeated to splice four horizontal connecting rods on the discharging disc 82 into a frame shape. Then, the fourth electric telescopic rod 72 drives the robotic arm 73 to move downward. At the same time, the robotic arm 73 drives the welding head 74 to move. The welding head 74 welds the joints of the spliced formed frame. After welding is completed, the clamping frame 193 is immediately driven to move to the position of another feeding box 61 containing vertical connecting rods. Then, the clamping frame 193 clamps and takes the connecting rods in the vertical feeding box 61. After taking the material, the driving mechanism immediately drives the transmission gear ring 11 to rotate, drives the slider 19 to move up and down at the same time, and the first electric telescopic rod 192 drives the movement of the clamping frame 193, so that the vertical connecting rod is accurately placed on the welded formed frame. Then, by driving the robotic arm 73 to move, the robotic arm 73 drives the welding head 74 to move, so that the welding head 74 welds and fixes the connection position. When the vertical connecting rod is welded, the formed frame of the horizontal connecting rod is welded on the vertical connecting rod. This process is repeated in turn, thereby realizing the automatic feeding and automatic welding of the frame, greatly improving the welding efficiency of the frame.

[0041] Embodiment III

[0042] Based on Embodiment 2, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, the connecting rod feeding mechanism includes two feeding boxes 61 fixedly connected to the mounting table 1. Both sides of the feeding box 61 are rotatably connected with second threaded rods 62. The two second threaded rods 62 are connected by a transmission wheel and a transmission belt. One end of one of the second threaded rods 62 is fixedly connected with a second driving motor 63 fixedly connected to the feeding box 61 through a coupling. The second driving motor 63 is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle of the second driving motor 63. A push plate 64 that is in threaded fit with the outer surface of the second threaded rod 62 and is slidably connected to the feeding box 61;

[0043] The positioning and fixing mechanism includes a fifth electric telescopic rod 81 fixedly connected to the mounting table 1. The top of the fifth electric telescopic rod 81 is fixedly connected with a feeding tray 82. The top of the feeding tray 82 is fixedly connected with a plurality of sixth electric telescopic rods 83. One end of the sixth electric telescopic rod 83 is fixedly connected with a second clamping block 84. One side of the second clamping block 84 is fixedly connected with a rubber buffer pad.

[0044] By placing a plurality of horizontal connecting rods into one of the feeding boxes 61 and a plurality of vertical connecting rods into the other feeding box 61, then driving the second threaded rod 62 to rotate by the second driving motor 63. The second threaded rod 62 drives the push plate 64 to move, and the push plate 64 drives the connecting rod to move out of the feeding box 61, realizing the automatic pushing and feeding of the connecting rod. Then, the horizontal connecting rod is taken out by the welding feeding mechanism. Then, the horizontal connecting rod is placed into the feeding tray 82 by the welding feeding mechanism while driving the feeding tray 82 to move downward by the fifth electric telescopic rod 81. Then, the second clamping block 84 is driven to move by the sixth electric telescopic rod 83, and the second clamping block 84 clamps and fixes the horizontal connecting rod to accurately splice it into the base of the forming frame. Then, it is welded by the welding mechanism. After welding, then the vertical connecting rod is automatically loaded onto the forming frame by the welding feeding mechanism, and then welded by the welding mechanism, thus realizing the accurate automatic feeding and splicing of the connecting rods of the frame during the frame welding process, greatly improving the welding efficiency of the frame.

[0045] Working principle of the present invention: The connecting rod feeding mechanism on the welding feeding mechanism automatically feeds the connecting rods. Subsequently, the transverse connecting rods of the frame are precisely placed into the positioning and fixing mechanism by the welding feeding mechanism for positioning and fixing. Then, the welded mechanism welds and fixes the assembled frame. Subsequently, the vertical connecting rods are precisely placed on the welded formed frame, and then the welded mechanism automatically welds the vertical connecting rods. This process is repeated in sequence to implement the automatic assembly and welding of the steel structure frame, eliminating the need for manual operation and greatly improving the welding efficiency of the steel structure frame.

[0046] The above has described a detailed embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A welding device for steel structure production, characterized in that, Including: An installation table (1) and an installation ring (2) fixedly connected to the installation table (1), and a transmission groove (3) is formed at the top of the installation ring (2); A welding feeding and splicing mechanism, which is arranged in the installation groove and is used for automatically feeding and splicing the connecting rods of the frame; The welding feeding and splicing mechanism includes a transmission gear ring (11) rotatably connected to the installation ring (2). The inner surface of the transmission gear ring (11) is in transmission connection with a driving mechanism connected to the installation table (1). The driving mechanism is used to drive the transmission gear ring (11) to rotate. The top of the transmission gear ring (11) is fixedly connected with a mounting plate (12). The top of the mounting plate (12) is rotatably connected with a first mounting shaft (13). The outer surface of the first mounting shaft (13) is in transmission connection with a first transmission mechanism connected to the mounting plate (12). The first transmission mechanism is used to drive the first mounting shaft (13) to rotate. The top end of the first mounting shaft (13) is fixedly connected with a mounting frame (14). A second mounting shaft (15) is rotatably connected inside the mounting frame (14). A transmission frame (16) is fixedly sleeved on the outer surface of the second mounting shaft (15). The outer surface of the second mounting shaft (15) is in transmission connection with a second transmission mechanism fixedly sleeved on the mounting frame (14). The second transmission mechanism is used to drive the second mounting shaft (15) to rotate; A first driving motor (17) is fixedly connected to the top of the transmission frame (16). The output end of the first driving motor (17) is fixedly connected with a first threaded rod (18) rotatably connected to the transmission frame (16) through a coupling. A slider (19) is in threaded fit with the outer surface of the first threaded rod (18). One side of the slider (19) is fixedly connected with a mounting disc (190). One side of the mounting disc (190) is rotatably connected with a third mounting shaft (191). A third transmission mechanism connected to the mounting disc (190) is fixedly sleeved on the outer surface of the third mounting shaft (191). The third transmission mechanism is used to drive the third mounting shaft (191) to rotate. One end of the third mounting shaft (191) is fixedly connected with a first electric telescopic rod (192). One end of the first electric telescopic rod (192) is fixedly connected with a clamping frame (193). A second electric telescopic rod (194) is fixedly connected inside the clamping frame (193). One end of the second electric telescopic rod (194) is fixedly connected with a first clamping block (195). An connecting rod feeding mechanism is arranged on the installation table (1), and the connecting rod feeding mechanism is used for automatically feeding the raw materials of the connecting rods of the frame; A welding mechanism, which is arranged on the installation table (1) and is used for automatically welding the spliced frame; A positioning and fixing mechanism, which is arranged on the installation table (1) and is used for fixing the frame.

2. The welding device for steel structure production according to claim 1, characterized in that, The driving mechanism comprises a driving motor (21) fixedly connected to the mounting platform (1); an output end of the driving motor (21) is fixedly connected to a driving shaft (22) via a coupling; an outer surface of the driving shaft (22) is fixedly sleeved with a driving gear (23) meshingly connected to a transmission gear ring (11).

3. A welding device for steel structure production according to claim 1, characterized in that, The first transmission mechanism comprises a first motor (31) fixedly connected to the mounting plate (12); an output end of the first motor (31) is fixedly connected to a first rotating shaft (32) via a coupling; a first gear (33) is fixedly sleeved on an outer surface of the first rotating shaft (32); and a second gear (34) fixedly sleeved on an outer surface of the first gear (33) is fixedly sleeved on an outer surface of the first mounting shaft (13).

4. A welding device for steel structure production according to claim 1, characterized in that The second transmission mechanism comprises a third electric telescopic rod (41) fixedly connected to the mounting frame (14); one end of the third electric telescopic rod (41) is fixedly connected to a transmission rack (42) slidably connected to the mounting frame (14); one side of the transmission rack (42) is meshingly connected to a third gear (43) fixedly sleeved to the second mounting shaft (15).

5. A welding device for steel structure production according to claim 1, characterized in that, The third transmission mechanism comprises a second motor (51) fixedly connected to the mounting plate (190); an output end of the second motor (51) is fixedly connected to a second rotating shaft (52) via a coupling; a fourth gear (53) is fixedly sleeved on an outer surface of the second rotating shaft (52); and an outer surface of the fourth gear (53) is meshingly connected to a fifth gear (54) fixedly sleeved on the third mounting shaft (191).

6. A welding device for steel structure production according to claim 1, characterized in that The connecting rod feeding mechanism comprises two feeding boxes (61) fixedly connected to the mounting platform (1), and second threaded rods (62) are rotatably connected to both sides of the feeding boxes (61), and the two second threaded rods (62) are connected to each other through a transmission wheel and a transmission belt, and one end of one of the second threaded rods (62) is fixedly connected to a second transmission motor (63) fixedly connected to the feeding box (61) through a coupling, and the outer surface of the second threaded rod (62) is threadedly matched with a push plate (64) slidably connected to the feeding box (61).

7. A welding device for steel structure production according to claim 1, characterized in that, The welding mechanism comprises a mounting frame (71) fixedly connected to the mounting platform (1); a fourth electric telescopic rod (72) is fixedly connected inside the mounting frame (71); a bottom end of the fourth electric telescopic rod (72) is fixedly connected to a mechanical arm (73) via a connecting plate; one end of the mechanical arm (73) is fixedly connected to a welding head (74); and the welding head (74) is connected to a welding machine body.

8. A welding device for steel structure production according to claim 1, characterized in that The positioning and fixing mechanism comprises a fifth electric telescopic rod (81) fixedly connected to the mounting platform (1); a top end of the fifth electric telescopic rod (81) is fixedly connected to a material discharge tray (82); a top end of the material discharge tray (82) is fixedly connected to a plurality of sixth electric telescopic rods (83); and one end of the sixth electric telescopic rod (83) is fixedly connected to a second clamping block (84).

9. The welding device for steel structure production according to claim 8, characterized in that, A rubber buffer pad is fixedly connected to one side of the second clamping block (84).

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