Positioning welding device for steel structure profile machining production line

Abstract

The invention relates to the technical field of profile welding, and discloses a positioning welding device for a steel structure profile machining production line, which comprises a supporting bottom plate, a supporting frame is mounted at the top of the supporting bottom plate, and a driving screw rod is movably connected to one side of the bottom of the supporting frame through a bearing; and a motor used for driving the screw rod to rotate is installed on the outer side of the supporting frame, a threaded block is in threaded connection with the outer side of the driving screw rod, a connecting frame is fixedly connected to the bottom of the threaded block, and an annular driving guide rail is installed on the outer surface of the connecting frame. And through the multi-angle welding function, the problem that precise positioning is difficult to achieve when traditional welding equipment treats complex steel structure profiles is solved, and the welding quality and efficiency are improved. The angle of the laser welding gun can be rapidly adjusted through the unique positioning device, it is guaranteed that all faces of a profile can be evenly welded in the welding process, welding defects caused by improper welding positions are avoided, and therefore the stability and the bearing capacity of the whole structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of profile welding, and in particular to a positioning welding device used in a steel structure profile processing production line. Background Art

[0002] Steel structure profiles are widely used in the fields of construction, bridges, mechanical equipment, etc. Due to their complex structure and various specifications, they usually need to be precisely processed and welded to ensure the stability and bearing capacity of the structure. Traditional steel structure profile processing technology usually adopts manual or semi-automatic welding methods. Operators need to manually adjust the angle and position of the profile, which not only increases the labor intensity, but also easily leads to inaccurate welding positions due to human factors, thus affecting the welding quality. When processing complex profiles, existing welding equipment cannot quickly and accurately complete multi-angle welding, resulting in error accumulation during the welding process, resulting in welding defects, affecting the strength and stability of the structure. In addition, there are also problems such as loose clamping of profiles and unstable positions in the traditional welding process, and the quality of the welded joints is difficult to guarantee, which in turn affects the durability and safety of the overall steel structure. With the increasing demand for high-precision and high-efficiency processing in steel structure projects, existing technologies have been unable to meet production needs.

[0003] To this end, the present invention proposes a positioning welding device for a steel structure profile processing production line to solve the above-mentioned problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a positioning welding device for a steel structure profile processing production line, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a positioning welding device for a steel structure profile processing production line, comprising a supporting base plate, a supporting frame is installed on the top of the supporting base plate, a bottom side of the supporting frame is movably connected with a driving screw through a bearing, a motor for driving the screw to rotate is installed on the outer side of the supporting frame, a threaded block is threadedly connected to the outer side of the driving screw, a connecting frame is fixedly connected to the bottom of the threaded block, an annular driving guide rail is installed on the outer surface of the connecting frame, a driving slider is installed on the outer side of the annular driving guide rail, a first connecting arm is installed on the outer side of the driving slider, an electric telescopic rod 2 is rotatably installed on the outer side of the first connecting arm, a second connecting arm is rotatably installed on the telescopic end of the electric telescopic rod 2, an electric telescopic rod 3 is rotatably installed on the outer side of the second connecting arm, and a laser welding gun is rotatably installed on the telescopic end of the electric telescopic rod 3.

[0006] Preferably, a bidirectional driving guide rail is installed on the top of the supporting base plate, an electric slider is installed on the outer side of the bidirectional driving guide rail, the top of the electric slider is fixedly connected to a mounting frame, a plurality of guide grooves are provided on the outer surface of the mounting frame, an electric telescopic rod 1 is installed on the outer side of the mounting frame, a rotating disk is rotatably installed on the output end of the electric telescopic rod 1, a plurality of arc-shaped swing rods are rotatably connected to the outer side of the rotating disk, a movable block is movably connected to the end of the arc-shaped swing rod, and a clamping block is fixedly connected to the outer side of the movable block.

[0007] Preferably, the rotating disk is rotatably connected to the outer side of the mounting frame, and a through hole is opened in the middle of the rotating disk.

[0008] Preferably, one side of the second connecting arm is rotatably connected to the outer side of the first connecting arm, and the laser welding gun is rotatably connected to the end of the second connecting arm.

[0009] Preferably, a guide rod is slidably connected to a through hole on one side of the inner side of the threaded block, and both left and right ends of the guide rod are fixedly connected to the inner side of the support frame.

[0010] Preferably, a collecting box is fixedly connected to one side of the top of the supporting base plate, an exhaust fan is installed on the outside of the collecting box, a plurality of filters are detachably connected to the inside of the collecting box, a connecting shaft is rotatably connected to a through hole on one side of the inside of the collecting box, a plurality of scrapers are fixedly connected to the outer surface of the connecting shaft, an exhaust hopper is connected to the outside of the collecting box via a pipeline, and an end of the connecting shaft is connected to the output end of the motor via a transmission assembly.

[0011] Preferably, the transmission assembly includes two synchronous wheels, one of which is fixedly connected to the output shaft of the motor, and the other is fixedly connected to one end of the connecting shaft, and the two synchronous wheels are connected by belt transmission.

[0012] Preferably, the plurality of guide grooves are axially symmetrically arranged along the middle portion of the mounting frame, and the outer surface of the movable block is slidably connected to the inner wall of the guide groove.

[0013] Preferably, the outer side of the collecting box is connected to an exhaust pipe, and the outer surface of the scraper is in contact with the outer surface of the filter.

[0014] The present invention provides a positioning welding device for a steel structure profile processing production line. It has the following beneficial effects: 1. The present invention solves the problem of the difficulty of traditional welding equipment to achieve accurate positioning when processing complex steel structure profiles through the multi-angle welding function, and improves the welding quality and efficiency. Its unique positioning device can quickly adjust the angle of the laser welding gun to ensure that all sides of the profile can be evenly welded during the welding process, avoiding welding defects caused by improper welding position, thereby improving the stability and bearing capacity of the overall structure.

[0015] 2. The present invention effectively solves the instability of manual operation in the traditional welding process through the automatic clamping function, ensures that the profile always maintains the accurate position and clamping force during the welding process, avoids the error caused by manual intervention, and improves the welding accuracy. Secondly, the automatic docking function makes the connection between the two steel profiles more firm and reliable, ensures the high quality and high strength of the welding joint, thereby improving the safety and durability of the overall structure.

[0016] 3. The present invention can effectively purify the smoke generated during welding, ensuring the cleanliness of the working environment and the health of the operators. At the same time, in conjunction with the transmission component, it can drive the scraper to rotate, so that the impurities on the outer surface of the filter can be cleaned, preventing the filter from being blocked by smoke and dust, and maintaining the efficient operation of the purification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the guide rod structure of the present invention; Figure 3 It is a schematic diagram of the support frame structure of the present invention; Figure 4 It is a schematic diagram of the structure of the connecting frame of the present invention; Figure 5 It is a schematic diagram of the structure of the mounting frame of the present invention; Figure 6 It is a schematic diagram of the clamping block structure of the present invention; Figure 7 It is a cross-sectional view of the collection box of the present invention.

[0018] Description of Figure Numbers: 1. Support base plate; 2. Support frame; 301, two-way driving guide rail; 302, electric slider; 303, mounting frame; 304, guide groove; 305, clamping block; 306, electric telescopic rod 1; 307, rotating disk; 308, movable block; 309, arc swing rod; 401, connecting frame; 402, annular driving guide rail; 403, driving slider; 404, first connecting arm; 405, electric telescopic rod 2; 406, second connecting arm; 407, electric telescopic rod 3; 408, laser welding gun; 501, driving screw; 502, thread block; 503, guide rod; 601, collecting box; 602, exhaust fan; 603, filter; 604, scraper; 605, connecting shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification 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 work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 - Attachment Figure 7 The embodiment of the present invention provides a positioning welding device for a steel structure profile processing production line, comprising a supporting base plate 1, a supporting frame 2 is installed on the top of the supporting base plate 1, a driving screw 501 is movably connected to one side of the bottom of the supporting frame 2 through a bearing, a motor for driving the screw 501 to rotate is installed on the outer side of the supporting frame 2, a threaded block 502 is threadedly connected to the outer side of the driving screw 501, a connecting frame 401 is fixedly connected to the bottom of the threaded block 502, an annular driving guide rail 402 is installed on the outer surface of the connecting frame 401, a driving slider 403 is installed on the outer side of the annular driving guide rail 402, a first connecting arm 404 is installed on the outer side of the driving slider 403, an electric telescopic rod 2 405 is rotatably installed on the outer side of the first connecting arm 404, a second connecting arm 406 is rotatably installed on the telescopic end of the electric telescopic rod 2 405, an electric telescopic rod 3 407 is rotatably installed on the outer side of the second connecting arm 406, and a laser welding gun 408 is rotatably installed on the telescopic end of the electric telescopic rod 3 407.

[0021] Specifically, the support base plate 1 provides a stable foundation for the entire device, ensuring the stability and structural strength of the system. A driving motor is installed on the outside of the support frame 2, and this motor rotates through the driving screw 501. The rotation of the driving screw 501 drives the threaded block 502 to move along the surface of the driving screw 501. The outer surface of the threaded block 502 adopts a precise thread design, which can maintain smooth movement when the driving screw 501 rotates. When the threaded block 502 moves along the driving screw 501, it drives the connecting frame 401 to move synchronously. This design can achieve accurate positioning of the end of the steel structure profile.

[0022] The outer surface of the connecting frame 401 is installed with an annular driving guide rail 402, and the outer side of the annular driving guide rail 402 is connected to the driving slider 403. The annular driving guide rail 402 and the driving slider 403 are precisely matched, and the driving slider 403 moves linearly along the guide rail, ensuring the stability and accuracy of the structure. The outer side of the driving slider 403 is installed with a first connecting arm 404, and the first connecting arm 404 is connected to the electric telescopic rod 2 405 through a rotating shaft to achieve more precise angle adjustment. The telescopic end of the electric telescopic rod 3 407 is rotatably installed with a laser welding gun 408. This structure forms a multi-level linkage system, which can accurately control the position and angle of the laser welding gun 408 according to the different angle requirements of the steel structure profile.

[0023] First, start the bidirectional drive rail 301 to drive the two electric sliders 302 to approach each other. In this way, the ends of the two steel structure profiles can be accurately brought close to each other to prepare for welding. Next, start the drive motor on the outside of the support frame 2. The start of the drive motor causes the drive screw 501 to rotate, thereby driving the threaded block 502 to move along the outer surface of the drive screw 501. The movement of the threaded block 502 drives the connection frame 401 to move synchronously, so that the ends of the steel structure profiles are accurately docked. With the start of the annular drive rail 402, the drive slider 403 moves along the rail, thereby driving the first connecting arm 404 to rotate, thereby achieving precise swinging of the laser welding gun 408. By starting the electric telescopic rod 2 405 and the electric telescopic rod 3 407, the second connecting arm 406 and the laser welding gun 408 can perform precise welding within a range of multiple angles, completing the multi-angle welding task of the steel structure profile.

[0024] A bidirectional driving guide rail 301 is installed on the top of the supporting base plate 1, an electric slider 302 is installed on the outer side of the bidirectional driving guide rail 301, a mounting frame 303 is fixedly connected to the top of the electric slider 302, a plurality of guide grooves 304 are provided on the outer surface of the mounting frame 303, an electric telescopic rod 1 306 is installed on the outer side of the mounting frame 303, a rotating disk 307 is rotatably installed on the output end of the electric telescopic rod 1 306, a plurality of arc-shaped swing rods 309 are rotatably connected to the outer side of the rotating disk 307, a movable block 308 is movably connected to the end of the arc-shaped swing rod 309, and a clamping block 305 is fixedly connected to the outer side of the movable block 308. The rotating disk 307 is rotatably connected to the outer side of the mounting frame 303, and a through hole is provided in the middle of the rotating disk 307. A plurality of guide grooves 304 are axially symmetrically arranged along the middle of the mounting frame 303, and the outer surface of the movable block 308 is slidably connected to the inner wall of the guide groove 304.

[0025] Specifically, in the device, a bidirectional drive rail 301 is installed on the top of the supporting base plate 1, and the function of the rail is to provide precise guidance and movement path for the electric slider 302. The design of the bidirectional drive rail 301 allows the electric slider 302 to slide freely along the rail to ensure the precise clamping and fixation of the two steel structure profiles. The electric slider 302 is installed on the outside of the bidirectional drive rail 301, and it drives the movement of the entire clamping system through the electric drive system. The top of the electric slider 302 is fixedly connected to the mounting frame 303. A plurality of guide grooves 304 are provided on the mounting frame 303, and the function of these guide grooves 304 is to ensure that the movable block 308 can slide along its inner wall during the cutting process, thereby realizing the clamping function.

[0026] An electric telescopic rod 306 is installed on the outside of the mounting frame 303. The function of the electric telescopic rod 306 is to control the rotation of the rotating disk 307, thereby driving the multiple arc-shaped swing rods 309 connected to the rotating disk 307 to swing. The rotating disk 307 is one of the core driving components. It rotates under the control of the electric telescopic rod 306, changes the angle of the swing rod, and then controls the movement of the movable block 308. A through hole is opened in the middle of the rotating disk 307 to allow the steel structure profile to pass freely, ensuring the stable positioning of the steel during the clamping process. The outer side of the movable block 308 is fixedly connected with a clamp block 305. During the movement of the movable block 308 along the guide groove 304, the clamp block 305 also moves synchronously, and finally the outer surface of the clamp block 305 contacts the outer surface of the steel structure profile and fixes the steel. The clamp block 305 can effectively prevent the sliding of the steel during the clamping process, ensuring the stable position of the steel during the cutting process, thereby improving the cutting accuracy.

[0027] One side of the second connecting arm 406 is rotatably connected to the outer side of the first connecting arm 404 , and the laser welding gun 408 is rotatably connected to the end of the second connecting arm 406 .

[0028] Specifically, one side of the first connecting arm 404 is connected to the second connecting arm 406 by rotation, forming a rotation linkage structure. This connection mode allows the first connecting arm 404 to drive the second connecting arm 406 to swing at a certain angle after being driven. Since the other side of the first connecting arm 404 is connected to the driving slider 403, the movement of the driving slider 403 will directly affect the angle change of the first connecting arm 404, thereby enabling the second connecting arm 406 to perform corresponding rotation adjustment. The end of the second connecting arm 406 is fixed to the laser welding gun 408 by rotation connection, so that the laser welding gun 408 can rotate flexibly under the drive of the second connecting arm 406. When the second connecting arm 406 swings through the movement of the first connecting arm 404, the laser welding gun 408 will adjust the angle together with the movement of the second connecting arm 406. Therefore, the swing of the laser welding gun 408 not only depends on the movement of the second connecting arm 406, but also can change the angle of the welding gun through this linkage structure, so that it can be welded at multiple angles.

[0029] A guide rod 503 is slidably connected to a through hole on one side of the inner side of the threaded block 502 , and both left and right ends of the guide rod 503 are fixedly connected to the inner side of the support frame 2 .

[0030] Specifically, the threaded block 502 can move along the outer surface of the guide rod 503 when moving, thereby ensuring the stability of the threaded block 502 during the movement.

[0031] A collection box 601 is fixedly connected to one side of the top of the support base plate 1, an exhaust fan 602 is installed on the outside of the collection box 601, and multiple filters 603 are detachably connected to the inside of the collection box 601. A connecting shaft 605 is rotatably connected to a through hole on one side of the inside of the collection box 601, and multiple scrapers 604 are fixedly connected to the outer surface of the connecting shaft 605. An exhaust hopper is connected to the outside of the collection box 601 through a pipeline, and the end of the connecting shaft 605 is connected to the output end of the motor through a transmission assembly. The transmission assembly includes two synchronous wheels, one of which is fixedly connected to the output shaft of the motor, and the other is fixedly connected to one end of the connecting shaft 605, and the two synchronous wheels are connected by belt drive. The outside of the collection box 601 is connected to an exhaust pipe, and the outer surface of the scraper 604 fits the outer surface of the filter 603.

[0032] Specifically, the collection box 601 is a device for collecting harmful smoke generated during welding. It is located on one side of the top of the support base plate 1 and is fixedly connected to the support base plate 1. Its internal design includes a plurality of detachable filter screens 603 for filtering particulate matter in the smoke. An exhaust fan 602 is installed on the outside of the collection box 601 to achieve the suction and purification of the smoke.

[0033] The function of the exhaust fan 602 is to draw in the surrounding air by causing negative pressure. When the exhaust fan 602 is started, a negative pressure state can be formed inside the collection box 601, and harmful smoke and dust around are attracted to enter the collection box 601. The exhaust fan 602 is connected to the exhaust hopper through a pipeline, so that the smoke and dust are guided into the collection box 601.

[0034] A connecting shaft 605 is rotatably connected to one side of the inner part of the collecting box 601 through a through hole. A plurality of scrapers 604 are fixedly connected to the outer surface of the connecting shaft 605. The function of the scrapers 604 is to clean the surface impurities of the filter screen 603 and prevent the filter screen 603 from being blocked by smoke. When smoke passes through the filter screen 603, some particles will adhere to the filter screen 603. At this time, the rotation of the scrapers 604 can remove these attachments and keep the filter screen 603 clean and unobstructed.

[0035] During the welding process, a large amount of harmful smoke will be generated due to high temperature and laser action. At this time, the exhaust fan 602 is started to form a negative pressure inside the collection box 601, sucking in the surrounding smoke. The smoke enters the collection box 601 through the suction hopper, and is filtered by multiple filter screens 603 before being discharged from the exhaust pipe. With the drive of the output end of the two-way drive guide 301, the transmission assembly can be driven to work, so that the connecting shaft 605 rotates. The rotation of the connecting shaft 605 drives multiple scrapers 604 to rotate, and the scrapers 604 fit the outer surface of the filter screen 603 to clean the attachments on the filter screen 603. Through this process, the impurities in the filter screen 603 are removed, avoiding the blockage of the filter screen 603, ensuring the continuous and effective purification of the smoke, and improving the cleaning efficiency of the system and the smoke purification effect.

[0036] Working principle: When using this device specifically, it includes the following steps: Step 1: First, two steel structure profiles to be cut are passed through the internal through holes of the mounting frames 303 on both sides respectively. At this time, the electric telescopic rod 306 is started to drive the rotating disk 307 to rotate. As the rotating disk 307 rotates, one end of the multiple arc-shaped swing rods 309 is driven to swing. At this time, the movable block 308 moves along the inner wall of the guide groove 304 under the traction force of the arc-shaped swing rod 309, until the multiple movable blocks 308 are close to each other along the middle of the mounting frame 303. As the movable block 308 moves, the clamping block 305 is driven to move synchronously until the outer surface of the clamping block 305 contacts the outer surface of the steel structure profile and clamps it; Step 2, after clamping the steel structure profile, the two electric sliders 302 are driven to approach each other as the bidirectional driving guide rail 301 is started, so that the ends of the two steel structure profiles are driven to approach each other, and the driving motor on the outside of the support frame 2 is started. As the driving motor is started, the driving screw 501 is driven to rotate, so that the threaded block 502 is driven to move along the outer surface of the driving screw 501, and the connecting frame 401 is driven to move synchronously during the movement of the threaded block 502. At this time, the driving slider 403 is driven to move as the annular driving guide rail 402 is started, and then the two first connecting arms 404 are driven to rotate, and the end of the second connecting arm 406 is driven to swing by starting the electric telescopic rod 2 405, and the electric telescopic rod 3 407 is started to drive the laser welding gun 408 to swing. With such cooperation, the steel structure profiles can be welded at multiple angles; Step three: harmful smoke will be generated during the welding process. At this time, start the exhaust fan 602 to make the interior of the collection box 601 in a negative pressure state. Since the collection box 601 is connected to the exhaust hopper through a pipeline, the smoke enters the interior of the collection box 601 through the exhaust hopper. At this time, it is filtered by multiple filters 603 and discharged from the exhaust pipe. The drive of the output end of the two-way drive guide rail 301 can drive the transmission component to work, and cooperate with the transmission component to drive the connecting shaft 605 to rotate, thereby driving multiple scrapers 604 to rotate, so that the impurities on the outer surface of the filter 603 are cleaned to avoid blockage of the filter 603 and improve the purification effect of the smoke.

[0037] 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 positioning welding device for a steel structure profile processing production line, comprising a supporting base plate (1), characterized in that: A support frame (2) is installed on the top of the support base plate (1); a driving screw rod (501) is movably connected to one side of the bottom of the support frame (2) via a bearing; a motor for driving the screw rod (501) to rotate is installed on the outer side of the support frame (2); a threaded block (502) is threadedly connected to the outer side of the driving screw rod (501); a connecting frame (401) is fixedly connected to the bottom of the threaded block (502); an annular driving guide rail (402) is installed on the outer surface of the connecting frame (401); and the annular driving guide rail ( A driving slider (403) is installed on the outer side of the driving slider (403), a first connecting arm (404) is installed on the outer side of the first connecting arm (404), an electric telescopic rod 2 (405) is rotatably installed on the outer side of the first connecting arm (404), a second connecting arm (406) is rotatably installed on the telescopic end of the electric telescopic rod 2 (405), an electric telescopic rod 3 (407) is rotatably installed on the outer side of the second connecting arm (406), and a laser welding gun (408) is rotatably installed on the telescopic end of the electric telescopic rod 3 (407).

2. The positioning welding device for a steel structure profile processing production line according to claim 1 is characterized in that: A bidirectional driving guide rail (301) is installed on the top of the supporting base plate (1), an electric slider (302) is installed on the outer side of the bidirectional driving guide rail (301), a mounting frame (303) is fixedly connected to the top of the electric slider (302), a plurality of guide grooves (304) are provided on the outer surface of the mounting frame (303), an electric telescopic rod (306) is installed on the outer side of the mounting frame (303), a rotating disk (307) is rotatably installed on the output end of the electric telescopic rod (306), a plurality of arc-shaped swinging rods (309) are rotatably connected to the outer side of the rotating disk (307), a movable block (308) is movably connected to the end of the arc-shaped swinging rod (309), and a clamping block (305) is fixedly connected to the outer side of the movable block (308).

3. The positioning welding device for a steel structure profile processing production line according to claim 2 is characterized in that: The rotating disk (307) is rotatably connected to the outside of the mounting frame (303), and a through hole is provided in the middle of the rotating disk (307).

4. The positioning welding device for a steel structure profile processing production line according to claim 1 is characterized in that: One side of the second connecting arm (406) is rotatably connected to the outside of the first connecting arm (404), and the laser welding gun (408) is rotatably connected to the end of the second connecting arm (406).

5. The positioning welding device for a steel structure profile processing production line according to claim 1 is characterized in that: A guide rod (503) is slidably connected to a through hole on one side of the inner side of the threaded block (502), and both left and right ends of the guide rod (503) are fixedly connected to the inner side of the support frame (2).

6. The positioning welding device for a steel structure profile processing production line according to claim 1 is characterized in that: A collecting box (601) is fixedly connected to one side of the top of the supporting bottom plate (1); an exhaust fan (602) is installed on the outside of the collecting box (601); a plurality of filter screens (603) are detachably connected to the inside of the collecting box (601); a connecting shaft (605) is rotatably connected to a through hole on one side of the inside of the collecting box (601); a plurality of scrapers (604) are fixedly connected to the outer surface of the connecting shaft (605); an exhaust hopper is connected to the outside of the collecting box (601) via a pipeline; and an end of the connecting shaft (605) is connected to an output end of a motor via a transmission assembly.

7. The positioning welding device for a steel structure profile processing production line according to claim 6 is characterized in that: The transmission assembly comprises two synchronous wheels, one of which is fixedly connected to the output shaft of the motor, and the other is fixedly connected to one end of the connecting shaft (605), and the two synchronous wheels are connected via a belt drive.

8. The positioning welding device for a steel structure profile processing production line according to claim 2 is characterized in that: The plurality of guide grooves (304) are axially symmetrically arranged along the middle of the mounting frame (303), and the outer surface of the movable block (308) is slidably connected to the inner wall of the guide groove (304).

9. The positioning welding device for a steel structure profile processing production line according to claim 6 is characterized in that: The outside of the collection box (601) is connected to an exhaust pipe, and the outer surface of the scraper (604) is in contact with the outer surface of the filter screen (603).

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