An intelligent spot welding station based on automobile production

Abstract

The application discloses an intelligent spot welding workstation based on automobile production and relates to the technical field of spot welding workstations.The spot welding workstation comprises a spot welding workbench and a spot welding robot, the spot welding robot is arranged on one side of the spot welding workbench, and the spot welding workstation further comprises a negative pressure collecting mechanism, an anti-blocking mechanism and an intermittent pause mechanism.The negative pressure collecting mechanism comprises a centralized box, the centralized box is located directly below the spot welding workbench, symmetrically-through fixing connections are arranged on the upper end of the centralized box, and air inlet pipes are fixedly connected to the symmetrically-through fixing connections.The upper end of each air inlet pipe is fixedly connected with a slag suction port, the inside of the centralized box can form a negative pressure environment at the same time when the spot welding work starts, the cross-sectional area difference between the air inlet pipe and the air exhaust pipe arranged in the centralized box is utilized, the space expansion effect is utilized to instantaneously reduce the dust-containing airflow speed, the larger welding slag particles are naturally settled and fall into the collecting box under the action of gravity, the efficient preliminary separation of the gas-solid two-phase is realized, the pre-separation of the large-particle welding slag can be completed without additional energy consumption, and the processing load of the subsequent filtering assembly is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of spot welding workstation technology, specifically to an intelligent spot welding workstation based on automobile production. Background Technology

[0002] Spot welding workstations are one of the core pieces of equipment in the manufacturing process of automobile body-in-white. They are widely used in the welding connection process of key components such as body side panels, floor panels, and roof panels. During spot welding, the welding electrode heats and melts the workpiece under the action of a large instantaneous current. This process inevitably generates a large amount of metal slag and welding fumes. These slag particles spread in all directions in the form of spatter under high temperature. Some of them settle on the surface of the workpiece and the workbench, while some are suspended in the air in the workshop. Currently, some workstations use dust extraction hoods or exhaust ducts near the welding station to draw the welding slag and fumes away from the work area using negative pressure generated by fans. However, existing negative pressure collection devices still have the following technical shortcomings in practical applications: First, the filter components of the existing negative pressure collection device are easily clogged by welding slag during use. As the filtration resistance continues to increase, the adsorption efficiency of the negative pressure system gradually decreases. When the welding slag on the surface of the filter plate accumulates to a certain extent, the machine must be stopped for manual cleaning or replacement of the filter element. This not only increases equipment maintenance time and labor costs, but also interrupts the continuity of welding production and reduces the overall operating efficiency of the workstation. Secondly, existing negative pressure collection devices typically direct welding slag particles directly to the filter element when handling dusty airflow, lacking a pre-separation mechanism for large welding slag particles. Under the impact of high-speed airflow, large welding slag particles directly impact the surface of the filter plate, which not only accelerates the wear and damage of the filter material, but also causes the surface of the filter plate to be quickly covered by coarse particles, significantly shortening the effective service life of the filter assembly.

[0003] Therefore, this invention proposes an intelligent spot welding workstation based on automobile production to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an intelligent spot welding workstation based on automobile production, which can effectively solve the problems in existing technologies.

[0005] (II) Technical Solution To achieve the above objectives, the present invention can be accomplished through the following technical solutions: An intelligent spot welding workstation for automobile production includes a spot welding workbench and a spot welding robot. The spot welding robot is positioned on one side of the spot welding workbench. The workstation also includes a negative pressure collection mechanism, an anti-clogging mechanism, and an intermittent pause mechanism. The negative pressure collection mechanism includes a collection box located directly below the spot welding workbench. Air inlet pipes are symmetrically and fixedly connected to the upper end of the collection box, and each air inlet pipe has a slag suction port fixedly connected to its upper end. Suction pipes are fixedly connected to both sides of the collection box, and a negative pressure fan is fixedly connected to the end of each suction pipe furthest from the collection box. The negative pressure collection mechanism is used to collect welding slag generated during spot welding by negative pressure adsorption. The anti-clogging mechanism includes a rotating shaft and symmetrically arranged filter plates. The rotating shaft is rotatably connected to the center of the upper end face of the collection box. The filter plates are all fixedly connected to the inner side wall of the collection box and cover the connection between the exhaust pipe and the collection box. The anti-clogging mechanism is used to clean the welding slag on the filter plates during the continuous negative pressure process and prevent the cleaned welding slag from being re-adsorbed onto the filter plates. The intermittent pause mechanism is used to drive the anti-clogging mechanism to perform intermittent reciprocating motion.

[0006] As a further embodiment of the present invention: a collection box is slidably connected to the lower end of the central box, a handle is fixedly connected to the side of the collection box away from the central box, and collection grooves are symmetrically opened on both sides of the upper surface of the central box.

[0007] As a further aspect of the present invention: a cover plate is attached to the top of each collection tank, and a fixing block is fixedly connected to the upper surface of each cover plate. An elastic telescopic column is fixedly connected to the opposite side of each of the two fixing blocks on the same side. A connecting block is fixedly connected to the end of each elastic telescopic column away from the fixing block. The connecting block is fixedly connected to the inner side wall of the collection box.

[0008] As a further aspect of the present invention: a movable plate is provided between the two cover plates on the same side. Two sliders are fixedly connected to the movable plate on the side near the inner wall of the collection box. Slide grooves are symmetrically opened on both sides of the inside of the collection box with the filter plate as the center. The sliders are slidably connected in the slide grooves. The lower ends of the movable plates are attached to the upper surface of the collection box. A scraper is symmetrically fixedly connected to the movable plate on the side near the filter plate. The scraper is attached to the surface of the filter plate. Baffles are provided on both sides of the scraper. The baffles are fixedly connected to the inner wall of the collection box and are respectively attached to both sides of the filter plate.

[0009] As a further embodiment of the present invention: grooves are symmetrically provided on both sides of the movable plate, cavities are provided on the lower end face of the movable plate, and slag discharge holes are provided at the bottom of the cavities; the grooves and cavities are connected to each other.

[0010] As a further embodiment of the present invention: a horizontal plate is fixedly connected between the two movable plates, a through groove is provided at the center of the horizontal plate, a movable column is slidably connected in the through groove, a linkage plate is fixedly connected to the upper end of the movable column, and the linkage plate is fixedly connected to the lower end of the rotating shaft.

[0011] As a further embodiment of the present invention: buffer grooves are symmetrically provided on the horizontal plate, and the buffer grooves are respectively connected to both ends of the through groove. A cleaning plate is slidably connected through the buffer groove. A fixing column is fixedly connected to the upper surface of the cleaning plate. A connecting plate is fixedly connected to the upper end of the fixing column. A lifting column is fixedly connected to the lower end of the connecting plate. The lifting column is slidably connected through the horizontal plate.

[0012] As a further embodiment of the present invention: a vertical plate is provided above the connecting plate, the vertical plate is fixedly connected to the top of the central box, a lifting groove is provided on the vertical plate, a linkage column is slidably connected in the lifting groove, and side plates are fixedly connected to both ends of the linkage column, and the side plates are fixedly connected to the upper surface of the connecting plate.

[0013] As a further aspect of the present invention: the intermittent pause mechanism includes an intermittent gear, which is fixedly connected to the upper end of the outer surface of the drive shaft. A turntable is attached to one side of the intermittent gear. The outer surface of the turntable is provided with tooth grooves that are adapted to the intermittent gear at equal intervals. A drive shaft is fixedly connected to the center of the upper end face of the turntable. A drive motor is fixedly connected to the upper end of the drive shaft. A support frame is fixedly connected to the drive motor. The support frame is fixedly connected to the upper end face of the collection box.

[0014] As a further aspect of the present invention: a lever is fixedly connected to the upper end face of the intermittent gear, and a lever is fixedly connected to the upper end face of the turntable near the tooth groove. The lever is used to move the lever to drive the intermittent gear to rotate into the tooth groove.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides an intelligent spot welding workstation based on automobile production, which has the following beneficial effects: By incorporating a negative pressure collection mechanism, a negative pressure environment is created inside the collection box simultaneously with the start of spot welding operations. This not only enables the directional adsorption and collection of welding slag from the moment it is generated, effectively preventing its diffusion into the surrounding environment and significantly improving the workshop working environment while protecting the occupational health of operators, but also, by setting a difference in cross-sectional area between the inlet and outlet pipes within the collection box, the velocity of the dust-laden airflow is instantly reduced using the spatial expansion effect. Larger welding slag particles naturally settle into the collection box under gravity, achieving efficient preliminary separation of the gas and solid phases. This pre-separation of large welding slag particles can be completed without additional energy consumption, effectively reducing the processing load on subsequent filter components. Furthermore, by arranging the gravity settling and filtration interception two-stage separation methods in series, large welding slag particles are separated and collected in the settling zone, while small particles are intercepted at the end of the filter plate. The clear division of labor and coordinated cooperation between the two significantly extends the service life and maintenance cycle of the filter plate, ensuring the long-term stability and reliability of the negative pressure collection system.

[0016] The anti-clogging mechanism allows welding slag on the filter plate to be collected into the cavity of the moving plate. This not only keeps the slag discharge hole closed during the movement of the moving plate due to the contact of the collection box, preventing the welding slag in the cavity from being discharged during the movement of the moving plate, but also effectively avoids secondary pollution caused by the slag scattering in non-discharge positions. This ensures the directionality and controllability of welding slag collection. Furthermore, the slag discharge hole remains closed during the movement of the moving plate, and is only discharged when the moving plate stops at a specific position, aligning the slag discharge hole with the collection tank. This achieves controllable timing of the slag discharge action, preventing the welding slag from being discharged prematurely during the movement of the moving plate and being re-adsorbed onto the filter plate surface by the negative pressure airflow. This effectively solves the technical problem of secondary adsorption of welding slag after cleaning. The system features elastic telescopic columns, fixed blocks, and a cover plate. After the welding slag in the cavity is discharged into the collection tank, it automatically covers the top of the collection tank. Not only does the cover plate move in the opposite direction to re-cover the collection tank after the moving plate continues to move, but it also automatically closes the slag discharge channel after the slag discharge is completed. This effectively prevents the welding slag already collected in the collection tank from being re-inhaled into the collection box under negative pressure. Furthermore, the cover plate always keeps the collection tank covered and closed during the movement of the moving plate, only opening briefly to discharge slag when the moving plate stops. This achieves a normally closed and sealed management of the collection tank, significantly reducing airflow leakage from the collection tank direction of the negative pressure system and ensuring the stability of the negative pressure in the collection box and the welding slag adsorption effect.

[0017] The buffer grooves facilitate the movement of the moving column during its reciprocating motion, pushing residual welding slag from the through-slot to the buffer grooves on both sides. This effectively prevents welding slag from accumulating in the through-slot, which could cause the moving column to jam or become obstructed, ensuring smooth sliding and reliable power transmission. Furthermore, the welding slag is gradually pushed to the end of the through-slot and into the buffer groove during the reciprocating motion of the moving column. This achieves continuous cleaning and directional transfer of welding slag within the through-slot, effectively preventing long-term accumulation and stubborn blockages, significantly extending the continuous operating time and maintenance cycle of the equipment. By incorporating a cleaning plate, fixed column, lifting column, connecting plate, side plate, linkage column, vertical plate, and lifting groove, the system can automatically clean the welding slag in the buffer groove. Through the coordinated action of the cleaning plate and the moving column, the moving column pushes the welding slag from the through groove to the buffer groove, while the cleaning plate pushes the welding slag from the buffer groove to the collection box. This clear division of labor and seamless operation ensures a complete directional transport path for the welding slag from the through groove to the buffer groove and then to the collection box. This prevents the welding slag from accumulating in the gaps between movements and ensures the smooth sliding of the moving column in the through groove is unaffected by welding slag accumulation. This allows the moving plate to drive the scraper to continuously and effectively scrape and clean the filter plate, maintaining stable filtration performance during long-term operation and effectively extending the continuous operating time and maintenance cycle of the equipment.

[0018] The intermittent pause mechanism provides sufficient time for the welding slag in the cavity to settle completely under gravity and fall into the collection tank. This not only ensures thorough slag removal by utilizing the pause window of the moving plate, allowing the welding slag to settle completely under gravity and fall into the collection tank, effectively preventing slag residue and accumulation in the cavity, but also provides ample settling time for the welding slag. This allows the welding slag to fall completely into the collection tank under its own weight in a stable environment free from airflow disturbances and mechanical vibrations, avoiding incomplete slag removal and channel blockage caused by insufficient settling time. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the centralized box connection structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the internal structure of the central box of the present invention; Figure 5 This is a schematic diagram of the connection structure between the central box and the movable plate of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of region B in the middle; Figure 7 This is a schematic diagram of the internal structure of the movable plate of the present invention; Figure 8 This is a schematic diagram of the mobile board connection structure of the present invention; Figure 9 This is a schematic diagram of the horizontal plate connection structure of the present invention.

[0021] In the picture: 1. Spot welding workbench; 2. Spot welding robot; 301. Centralized collection box; 302. Collection box; 303. Negative pressure fan; 304. Air extraction pipe; 305. Handle; 306. Air inlet pipe; 307. Sludge suction port; 308. Collection tank; 401. Drive motor; 402. Intermittent gear; 403. Paddle plate; 404. Turntable; 405. Paddle lever; 406. Gear groove; 407. Drive shaft; 408. Support frame; 501. Rotating shaft; 502. Filter plate; 503. Slide groove; 504. Moving plate; 505. Sliding block; 506. Baffle; 507. Shovel; 508. Groove; 509. Cavity; 510. Cover plate; 511. Fixing block; 512. Elastic telescopic column; 513. Connecting block; 514. Slag discharge hole; 515. Vertical plate; 516. Horizontal plate; 517. Through groove; 518. Cleaning plate; 519. Fixing column; 520. Lifting column; 521. Connecting plate; 522. Side plate; 523. Linkage column; 524. Lifting groove; 525. Linkage plate; 526. Moving column; 527. Buffer groove. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] This embodiment describes an intelligent spot welding workstation based on automobile production, such as... Figures 1-9As shown, the system includes a spot welding workbench 1 and a spot welding robot 2. The spot welding robot 2 is located on one side of the spot welding workbench 1. It also includes a negative pressure collection mechanism, an anti-clogging mechanism, and an intermittent pause mechanism. The negative pressure collection mechanism includes a collection box 301, located directly below the spot welding workbench 1. Air inlet pipes 306 are symmetrically and fixedly connected to the upper end of the collection box 301. Each air inlet pipe 306 has a slag suction port 307 fixedly connected to its upper end. Extraction pipes 304 are fixedly connected to both sides of the collection box 301. Negative pressure air is fixedly connected to the end of each extraction pipe 304 away from the collection box 301. Fan 303, the negative pressure collection mechanism is used to collect welding slag generated during spot welding by negative pressure adsorption. The anti-clogging mechanism includes a rotating shaft 501 and symmetrically arranged filter plates 502. The rotating shaft 501 is rotatably connected to the center of the upper end face of the collection box 301. The filter plates 502 are all fixedly connected to the inner side wall of the collection box 301. The filter plates 502 cover the connection between the exhaust pipe 304 and the collection box 301. The anti-clogging mechanism is used to clean the welding slag on the filter plates 502 during the continuous negative pressure process and prevent the cleaned welding slag from being re-adsorbed onto the filter plates 502.

[0024] In this embodiment, as Figure 4 and Figure 5 As shown, a collection box 302 is slidably connected to the lower end of the collection box 301. A handle 305 is fixedly connected to the side of the collection box 302 away from the collection box 301. Collection grooves 308 are symmetrically opened on both sides of the upper surface of the collection box 301. The collection box 302 is used to collect the welding slag that is adsorbed and settled by negative pressure. When the welding slag accumulates to a certain amount, the operator can pull the handle 305 to pull the collection box 302 out of the collection box 301 to clean the welding slag. After cleaning, the collection box 302 can be pushed back into the collection box 301 for continued use. The operation is simple and the maintenance is convenient.

[0025] In this embodiment, as Figure 5 and Figure 6 As shown, each collection tank 308 is fitted with a cover plate 510. Each cover plate 510 has a fixed block 511 fixedly connected to its upper surface. Each fixed block 511 on the same side has an elastic telescopic column 512 fixedly connected to the opposite side. Each elastic telescopic column 512 has a connecting block 513 fixedly connected to the end away from the fixed block 511. The connecting block 513 is fixedly connected to the inner wall of the collection box 301. When the cover plate 510 is moved horizontally under force to open the collection tank 308, the fixed block 511 will squeeze the elastic telescopic column 512, allowing the welding slag to fall smoothly into the collection tank 308. After the welding slag has completely fallen in, the rebound force of the elastic telescopic column 512 pushes the fixed block 511 to move the cover plate 510 in the opposite direction to reset it and refit it above the collection tank 308, sealing the collection tank 308 and preventing the welding slag in the collection tank 308 from being sucked back into the collection box 301 under negative pressure, effectively preventing the secondary dispersion of the welding slag.

[0026] In this embodiment, as Figure 5 and Figure 6 As shown, a movable plate 504 is provided between the two cover plates 510 on the same side. Two sliders 505 are fixedly connected to the movable plate 504 near the inner wall of the collection box 301. Slide grooves 503 are symmetrically formed on both sides of the inside of the collection box 301, centered on the filter plate 502. The sliders 505 are slidably connected within the slide grooves 503. The lower ends of the movable plates 504 are attached to the upper surface of the collection box 302. A scraper 507 is symmetrically fixedly connected to the movable plate 504 near the filter plate 502. The scrapers 507... The scraper 507 is attached to the surface of the filter plate 502. Both sides of the scraper 507 are provided with baffles 506. The baffles 506 are fixedly connected to the inner side wall of the collection box 301 and are respectively attached to both sides of the filter plate 502. When the moving plate 504 slides back and forth along the slide groove 503, the scraper 507 fixedly connected to the moving plate 504 moves synchronously, closely adhering to the surface of the filter plate 502 to scrape off and clean the attached welding slag, ensuring that the filter plate 502 always remains transparent and maintaining the adsorption efficiency of the negative pressure system.

[0027] In this embodiment, as Figure 6 As shown, grooves 508 are symmetrically provided on both sides of the movable plate 504, and cavities 509 are provided on the lower end face of the movable plate 504. Slag discharge holes 514 are provided at the bottom of the cavities 509. The grooves 508 and cavities 509 are connected. The welding slag scraped off by the scraper 507 from the surface of the filter plate 502 slides down the surface of the filter plate 502 into the grooves 508, enters the cavity 509 through the grooves 508 for temporary storage, and then falls into the collection tank 308 below through the slag discharge holes 514. This realizes the directional collection and temporary storage function of scraped welding slag, and avoids the scraped welding slag from scattering everywhere under the action of negative pressure.

[0028] In this embodiment, as Figure 8 and Figure 9 As shown, a horizontal plate 516 is fixedly connected between the two movable plates 504. A through groove 517 is provided at the center of the horizontal plate 516. A movable column 526 is slidably connected in the through groove 517. A linkage plate 525 is fixedly connected to the upper end of the movable column 526. The linkage plate 525 is fixedly connected to the lower end of the rotating shaft 501. When the rotating shaft 501 rotates, the linkage plate 525 drives the movable column 526 to slide in the through groove 517, thereby driving the horizontal plate 516 to drive the movable plates 504 on both sides to reciprocate along the slide groove 503. This realizes that a single power source can simultaneously drive the movable plates 504 on both sides to move synchronously. The structure is compact and the transmission efficiency is high.

[0029] In this embodiment, as Figure 8 and Figure 9As shown, a buffer groove 527 is symmetrically provided on the horizontal plate 516. The buffer groove 527 is connected to both ends of the through groove 517. A cleaning plate 518 is slidably connected through the buffer groove 527. A fixing column 519 is fixedly connected to the upper end of the cleaning plate 518. A connecting plate 521 is fixedly connected to the upper end of the fixing column 519. A lifting column 520 is fixedly connected to the lower end of the connecting plate 521. The lifting column 520 is slidably connected through the horizontal plate 516. Through the buffer groove 527, the moving column 526 can push the welding slag remaining in the through groove 517 into the buffer groove 527. And through the up and down movement of the cleaning plate 518, the welding slag in the buffer groove 527 is pushed into the collection box 302 below.

[0030] In this embodiment, as Figure 8 and Figure 9 As shown, a vertical plate 515 is provided above the connecting plate 521. The vertical plate 515 is fixedly connected to the top of the central box (501). A lifting groove 524 is provided on the vertical plate 515. A linkage column 523 is slidably connected in the lifting groove 524. Side plates 522 are fixedly connected to both ends of the linkage column 523. The side plates 522 are fixedly connected to the upper end face of the connecting plate 521. When the connecting plate 521 moves horizontally back and forth with the horizontal plate 516 through the lifting column 520, the connecting plate 521 will drive the linkage column 523 to move horizontally synchronously through the side plates 522. The linkage column 523 is affected by the lifting groove 524 and will slide along the path of the lifting groove 524 during the horizontal movement, thereby pulling the connecting plate 521 to move up and down synchronously during the horizontal movement through the side plates 522.

[0031] Compared with existing technologies, this system can create a negative pressure environment inside the collection box 301 at the same time as the spot welding operation starts. This not only enables the welding slag to be directionally adsorbed and collected from the moment it is generated, effectively preventing the welding slag from spreading to the surrounding environment and significantly improving the workshop working environment and protecting the occupational health of operators, but also, by setting the cross-sectional area difference between the air inlet pipe 306 and the exhaust pipe 304 in the collection box 301, the velocity of the dust-laden airflow is instantly reduced by the spatial expansion effect. Larger welding slag particles naturally settle into the collection box 302 under gravity, achieving efficient preliminary separation of the gas and solid phases. The pre-separation of large welding slag particles can be completed without additional energy consumption, effectively reducing the processing load of subsequent filter components. Furthermore, by arranging the two-stage separation method of gravity settling and filtration interception in series, large welding slag particles are separated and collected in the settling zone, while small particles are intercepted by the filter plate 502 at the end. The two have clear division of labor and work together, significantly extending the service life and maintenance cycle of the filter plate 502, and ensuring the long-term stability and reliability of the negative pressure collection system.

[0032] At other levels, this embodiment also provides an intermittent pause mechanism for driving the anti-blocking mechanism to perform intermittent reciprocating motion, such as... Figures 1-4As shown, the intermittent pause mechanism includes an intermittent gear 402, which is fixedly connected to the upper end of the outer surface of the drive shaft 407. A turntable 404 is attached to one side of the intermittent gear 402. The outer surface of the turntable 404 is provided with tooth grooves 406 that are adapted to the intermittent gear 402 at equal intervals. The drive shaft 407 is fixedly connected to the center of the upper end face of the turntable 404. A drive motor 401 is fixedly connected to the upper end of the drive shaft 407. A support frame 408 is fixedly connected to the drive motor 401. The support frame 408 is fixedly connected to the upper end face of the collection box 301.

[0033] In this embodiment, as Figure 3 As shown, a lever 403 is fixedly connected to the upper end face of the intermittent gear 402, and a lever 405 is fixedly connected to the upper end face of the turntable 404 near the tooth groove 406. The lever 405 is used to move the lever 403 to drive the intermittent gear 402 to rotate into the tooth groove 406. When the turntable 404 rotates, the turntable 404 will drive the lever 405 to move the lever 403, so that the lever 403 can drive the intermittent gear 402 to rotate into the tooth groove 406.

[0034] Compared with existing technologies, this method provides sufficient time for the welding slag in cavity 509 to completely settle and fall into collection tank 308 under gravity. This not only utilizes the pause window of moving plate 504 to ensure the complete settling and falling of welding slag into collection tank 308 under gravity, thus guaranteeing thorough slag removal and effectively preventing slag residue accumulation in cavity 509, but also provides ample settling time for the welding slag during the pause of moving plate 504. This allows the welding slag to fall completely into collection tank 308 under its own weight in a stable environment free from airflow disturbances and mechanical vibrations, avoiding incomplete slag removal and channel blockage caused by insufficient settling time.

[0035] The overall working process and principles involved in the above embodiments are as follows: When workers need to perform spot welding on automotive parts, the spot welding robot 2 is first started to perform the spot welding operation on the automotive parts. At the same time, the negative pressure fan 303 is started. The negative pressure fan 303 draws air out of the collection box 301 through the exhaust pipe 304, creating a negative pressure environment inside the collection box 301. Under the action of negative pressure suction, the welding slag generated during the spot welding process enters the collection box 301 through the slag suction port 307 and the air intake pipe 306, completing the initial negative pressure adsorption and collection of welding slag. After the dust-laden airflow (air carrying welding slag) enters the collection box 301, the airflow speed suddenly decreases because the internal space of the collection box 301 is much larger than the cross-sectional area of ​​the air intake pipe 306. Larger welding slag particles naturally settle under gravity and fall into the collection box 302, while the airflow continues to flow towards the exhaust pipe 304. When passing through the filter plate 502, the small welding slag particles remaining in the airflow are intercepted by the filter plate 502, ensuring that the discharged air is clean and unpolluted. This not only ensures that the spot welding operation is started at the same time as the dust-laden airflow. The negative pressure environment inside the collection box 301 enables the directional adsorption and collection of welding slag from the moment it is generated, effectively preventing the slag from spreading to the surrounding environment, significantly improving the workshop working environment, and protecting the occupational health of operators. Moreover, by setting the cross-sectional area difference between the air inlet pipe 306 and the exhaust pipe 304 in the collection box 301, the velocity of the dust-laden airflow is instantly reduced by utilizing the spatial expansion effect. Larger welding slag particles naturally settle into the collection box 302 under the action of gravity, achieving efficient preliminary separation of the gas and solid phases. The pre-separation of large welding slag particles can be completed without additional energy consumption, effectively reducing the processing load of subsequent filter components. Furthermore, by arranging the two-stage separation method of gravity settling and filtration interception in series, large welding slag particles are separated and collected in the settling zone, while small particles are intercepted by the filter plate 502 at the end. The two have clear division of labor and work together, significantly extending the service life and maintenance cycle of the filter plate 502, and ensuring the long-term stability and reliability of the negative pressure collection system. During the negative pressure adsorption process, the drive motor 401 starts simultaneously. The drive motor 401 drives the turntable 404 to rotate continuously via the drive shaft 407. When the turntable 404 rotates to the point where the tooth groove 406 is about to mesh with the intermittent gear 402, the lever 405 fixedly connected to the upper end of the turntable 404 will first move the lever plate 403 connected to the upper end of the intermittent gear 402, thereby causing the intermittent gear 402 to rotate at an angle, so that the teeth of the intermittent gear 402 are engaged in the tooth groove 406 of the turntable 404. Subsequently, the rotating turntable 404 drives the intermittent gear 402 to rotate synchronously by 180 degrees through the tooth groove 406. As the turntable 404 continues to rotate... After the toothed groove 406 separates from the teeth of the intermittent gear 402 again, the toothless part of the outer surface of the intermittent gear 402 comes into contact with the smooth surface of the turntable 404, and its position is locked and cannot rotate. This cycle repeats, and the cooperation between the lever 405 and the turntable 404 drives the intermittent gear 402 to achieve intermittent 180-degree rotation. During the rotation of the intermittent gear 402, the intermittent gear 402 drives the rotating shaft 501 to rotate through the drive shaft 407. The rotating shaft 501 drives the moving column 526 to slide in the through groove 517 of the horizontal plate 516 through the linkage plate 525. The drive horizontal plate 516 drives the moving plates 504 on both sides to slide along the groove. 503 reciprocates once, and the scraper 507, fixedly connected to the moving plate 504, scrapes off the attached welding slag against the surface of the filter plate 502. The scraped welding slag slides down the surface of the filter plate 502 into the groove 508 and enters the cavity 509 for temporary storage. During the movement of the moving plate 504, because the lower end face of the moving plate 504 is in contact with the upper end face of the collection box 302, the slag discharge hole 514 opened on the lower end face of the moving plate 504 is closed due to the contact of the collection box 302. Therefore, the welding slag in the cavity 509 will not be discharged, and the slag discharge hole 514 is closed due to the contact of the collection box 302 during the movement of the moving plate 504. The combined effect is in a closed state, and the welding slag in the cavity 509 will not be discharged during the movement of the moving plate 504. This effectively avoids the welding slag from scattering in non-slag discharge positions and causing secondary pollution, ensuring the directionality and controllability of welding slag collection. Moreover, the slag discharge hole 514 is kept closed during the movement of the moving plate 504. The slag discharge hole 514 is aligned with the collection tank 308 only when the moving plate 504 stops at a specific position to discharge slag. This realizes the timing control of the slag discharge action and avoids the welding slag from being discharged in advance during the movement of the moving plate 504 and being re-adsorbed onto the surface of the filter plate 502 by the negative pressure airflow. This effectively solves the technical problem of secondary adsorption of welding slag after cleaning. During the intermittent reciprocating movement of the moving plate 504 and the scraper 507, when the moving plate 504 stops at one side of the filter plate 502, it comes into contact with the baffle 506 on one side of the filter plate 502, thus sealing the groove 508 inside the moving plate 504. Simultaneously, the moving plate 504 pushes the cover plate 510 connected to its lower end face to slide synchronously on the upper end face of the collection box 302. Through the fixing block 511 connected to the upper end face of the cover plate 510, the elastic telescopic column 512 is squeezed, opening the collection groove 30 on the upper end face of the collection box 302. 8. This ensures that the slag discharge hole 514 and the collection tank 308 on the lower end face of the moving plate 504 are on the same vertical line. At this time, the welding slag in the cavity 509 will fall through the slag discharge hole 514 into the collection tank 308 below. Because the moving plate 504 is stationary, the welding slag in the cavity 509 has sufficient time to completely settle and fall into the collection tank 308 under gravity. This not only utilizes the time window during which the moving plate 504 stops to ensure the welding slag in the cavity 509 completely settles and falls into the collection tank 308 under gravity, but also ensures the thoroughness of slag discharge and effectively prevents welding slag from accumulating in the cavity. The slag accumulates in cavity 509, and the pause of moving plate 504 provides sufficient settling time for the welding slag. This allows the slag to fall completely into collection tank 308 under its own weight in a stable environment free from airflow disturbance and mechanical vibration, avoiding incomplete slag removal and channel blockage caused by insufficient settling time. When moving plate 504 stops and continues to move, cover plate 510 is subjected to the rebound force of elastic telescopic column 512, which pushes fixed block 511 to move cover plate 510 in the opposite direction, re-covering the upper end of collection tank 308. This not only utilizes the rebound force of elastic telescopic column 512 after moving plate 504 continues to move, but also... The force pushes the cover plate 510 to move in the opposite direction and cover the collection tank 308 again, realizing the automatic closure of the slag discharge channel after the slag discharge is completed. This effectively prevents the welding slag collected in the collection tank 308 from being sucked back into the collection box 301 under the action of negative pressure. Moreover, the cover plate 510 always keeps the collection tank 308 covered and closed during the movement of the moving plate 504, and only opens briefly to discharge slag when the moving plate 504 stops. This realizes the normally closed sealing management of the collection tank 308, significantly reduces the airflow leakage of the negative pressure system from the direction of the collection tank 308, and ensures the stability of the negative pressure in the collection box 301 and the welding slag adsorption effect. As the rotating shaft 501 drives the moving column 526 to slide within the through groove 517 on the horizontal plate 516 via the linkage plate 525, and as the horizontal plate 516 moves the moving plate 504 in an intermittent horizontal reciprocating motion, welding slag inevitably falls into the through groove 517. When the moving column 526 slides within the through groove 517, it pushes the welding slag that has fallen into the through groove 517 to both sides, causing the welding slag to enter the buffer groove 527 connected to both ends of the through groove 517. As the moving column 526 continues to reciprocate within the through groove 517, it continuously pushes the welding slag in the through groove 517 to the buffer groove 517. In section 27, the accumulation of welding slag in the through groove 517 is prevented from affecting the normal sliding of the moving column 526. This not only effectively prevents the accumulation of welding slag in the through groove 517 from causing the moving column 526 to get stuck or obstructed, ensuring the smooth sliding of the moving column 526 in the through groove 517 and the reliability of power transmission, but also allows the welding slag to be gradually pushed to the end of the through groove 517 and enter the buffer groove 527 during the reciprocating sliding of the moving column 526. This achieves continuous cleaning and directional transfer of welding slag in the through groove 517, effectively preventing the long-term accumulation of welding slag in the through groove 517 from forming stubborn blockages, and significantly extending the continuous operation time and maintenance cycle of the equipment. After the moving column 526 pushes the welding slag into the buffer tank 527, the horizontal plate 516 continuously reciprocates horizontally under the drive of the moving column 526. The movement of the horizontal plate 516 drives the connecting plate 521, which is fixedly connected to the upper end of the lifting column 520, to move synchronously through the lifting column 520 that is slidably connected to the horizontal plate 516. A side plate 522 is fixedly connected to the upper end of the connecting plate 521, and a vertical plate 515 is provided above the side plate 522. The vertical plate 515 is fixedly connected to the top of the central box 301 and is stationary. A lifting groove 524 is provided on the vertical plate 515, and a linkage column 523 is slidably connected to the lifting groove 524. Both ends of the linkage column 523 are fixedly connected to the side plate 522. When the horizontal plate 516 is horizontal... During movement, the linkage column 523 guides the side plate 522 via the lifting groove 524, allowing the side plate 522 to slide through the lifting column 520 on the horizontal plate 516 via the connecting plate 521 as it moves horizontally synchronously with the horizontal plate 516. This converts the horizontal movement of the horizontal plate 516 into the vertical lifting movement of the connecting plate 521. The connecting plate 521 is fixedly connected to the cleaning plate 518 via the fixing column 519, and the cleaning plate 518 is slidably connected within the buffer groove 527. Therefore, when the connecting plate 521 moves horizontally and synchronously with the horizontal plate 516, the connecting plate 521 drives the cleaning plate 518 to move synchronously within the buffer groove 527 via the fixing column 519. During descent, the cleaning plate 518 pushes the welding slag accumulated in the buffer trough 527 downwards, allowing it to fall through the bottom of the buffer trough 527 into the collection box 302 below. When the cleaning plate 518 rises, it resets, preparing for the next pushing action, and uses the lever 405 to push the welding slag into the buffer trough 527. Thus, during the horizontal reciprocating motion of the horizontal plate 516, the cleaning plate 518 moves up and down synchronously with the horizontal plate 516, continuously pushing the welding slag pushed into the buffer trough 527 by the moving column 526 to the collection box 302 below, achieving automatic cleaning of the welding slag in the buffer trough 527. This is achieved not only through the timing coordination of the cleaning plate 518 and the moving column 526, but also through the automatic cleaning of the welding slag in the buffer trough 527. The 26 is responsible for pushing the welding slag in the through groove 517 into the buffer groove 527, and the cleaning plate 518 is responsible for pushing the welding slag in the buffer groove 527 into the collection box 302. The two have clear division of labor and their actions are coordinated, realizing a complete directional conveying path for welding slag from the through groove 517 to the buffer groove 527 and then to the collection box 302. This avoids the welding slag from accumulating in the gaps between movements, and ensures that the smooth sliding of the moving column 526 in the through groove 517 is not affected by the accumulation of welding slag. This ensures that the moving plate 504 drives the scraper 507 to continuously and effectively scrape and clean the filter plate 502, so that the filtration performance of the filter plate 502 remains stable during long-term operation, effectively extending the continuous operation time and maintenance cycle of the equipment.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent spot welding workstation for automobile production, comprising a spot welding workbench (1) and a spot welding robot (2), wherein the spot welding robot (2) is disposed on one side of the spot welding workbench (1), characterized in that, It also includes a negative pressure collection mechanism, an anti-clogging mechanism, and an intermittent pause mechanism; The negative pressure collection mechanism includes a collection box (301), which is located directly below the spot welding workbench (1). An air inlet pipe (306) is symmetrically and fixedly connected to the upper end of the collection box (301). A slag suction port (307) is fixedly connected to the upper end of each air inlet pipe (306). An exhaust pipe (304) is fixedly connected to both sides of the collection box (301). A negative pressure fan (303) is fixedly connected to the end of each exhaust pipe (304) away from the collection box (301). The negative pressure collection mechanism is used to perform negative pressure adsorption and collection of welding slag generated during spot welding. The anti-clogging mechanism includes a rotating shaft (501) and symmetrically arranged filter plates (502). The rotating shaft (501) is rotatably connected to the center of the upper end face of the collection box (301). The filter plates (502) are all fixedly connected to the inner side wall of the collection box (301). The filter plates (502) cover the connection between the exhaust pipe (304) and the collection box (301). The anti-clogging mechanism is used to clean the welding slag on the filter plates (502) during the continuous negative pressure process and prevent the cleaned welding slag from being re-adsorbed onto the filter plates (502). The intermittent pause mechanism is used to drive the anti-blocking mechanism to perform intermittent reciprocating motion.

2. The intelligent spot welding workstation based on automobile production according to claim 1, characterized in that, The lower end of the collection box (301) is slidably connected to a collection box (302), and a handle (305) is fixedly connected to the side of the collection box (302) away from the collection box (301). Collection grooves (308) are symmetrically opened on both sides of the upper surface of the collection box (301).

3. The intelligent spot welding workstation based on automobile production according to claim 2, characterized in that, Each of the collection troughs (308) is fitted with a cover plate (510), and each of the cover plates (510) is fixedly connected to a fixing block (511). Each of the two fixing blocks (511) on the same side is fixedly connected to an elastic telescopic column (512) on the opposite side. Each of the elastic telescopic columns (512) is fixedly connected to a connecting block (513) at the end away from the fixing block (511). Each connecting block (513) is fixedly connected to the inner wall of the collection box (301).

4. The intelligent spot welding workstation based on automobile production according to claim 3, characterized in that, A movable plate (504) is provided between the two cover plates (510) on the same side. Two sliders (505) are fixedly connected to the movable plate (504) on the side near the inner wall of the collection box (301). Slide grooves (503) are symmetrically opened on both sides of the inside of the collection box (301) with the filter plate (502) as the center. The sliders (505) are slidably connected in the slide grooves (503). The lower end of the movable plate (504) is attached to the upper surface of the collection box (302). A scraper (507) is symmetrically fixedly connected to the side of the movable plate (504) near the filter plate (502). The scraper (507) is attached to the surface of the filter plate (502). Baffles (506) are provided on both sides of the scraper (507). The baffles (506) are fixedly connected to the inner wall of the collection box (301) and are respectively attached to both sides of the filter plate (502).

5. The intelligent spot welding workstation based on automobile production according to claim 4, characterized in that, The movable plate (504) has symmetrical grooves (508) on both sides, and a cavity (509) is formed on the lower end face of the movable plate (504). A slag discharge hole (514) is formed at the bottom of the cavity (509). The grooves (508) and the cavities (509) are connected.

6. The intelligent spot welding workstation based on automobile production according to claim 5, characterized in that, A horizontal plate (516) is fixedly connected between the two movable plates (504). A through groove (517) is provided at the center of the horizontal plate (516). A movable column (526) is slidably connected in the through groove (517). A linkage plate (525) is fixedly connected to the upper end of the movable column (526). The linkage plate (525) is fixedly connected to the lower end of the rotating shaft (501).

7. The intelligent spot welding workstation based on automobile production according to claim 6, characterized in that, The horizontal plate (516) is symmetrically provided with buffer grooves (527), which are connected to both ends of the through groove (517). A cleaning plate (518) is slidably connected through the buffer groove (527). A fixing column (519) is fixedly connected to the upper end of the cleaning plate (518). A connecting plate (521) is fixedly connected to the upper end of the fixing column (519). A lifting column (520) is fixedly connected to the lower end of the connecting plate (521). The lifting column (520) is slidably connected through the horizontal plate (516).

8. The intelligent spot welding workstation based on automobile production according to claim 7, characterized in that, A vertical plate (515) is provided above the connecting plate (521). The vertical plate (515) is fixedly connected to the top of the central box (501). A lifting groove (524) is provided on the vertical plate (515). A linkage column (523) is slidably connected in the lifting groove (524). Side plates (522) are fixedly connected to both ends of the linkage column (523). The side plates (522) are fixedly connected to the upper surface of the connecting plate (521).

9. The intelligent spot welding workstation based on automobile production according to claim 1, characterized in that, The intermittent pause mechanism includes an intermittent gear (402), which is fixedly connected to the upper end of the outer surface of the drive shaft (407). A turntable (404) is attached to one side of the intermittent gear (402). The outer surface of the turntable (404) is provided with tooth grooves (406) that are adapted to the intermittent gear (402) at equal intervals. The drive shaft (407) is fixedly connected to the center of the upper end face of the turntable (404). A drive motor (401) is fixedly connected to the upper end of the drive shaft (407). A support frame (408) is fixedly connected to the drive motor (401). The support frame (408) is fixedly connected to the upper end face of the collection box (301).

10. A smart spot welding workstation based on automobile production according to claim 9, characterized in that, A lever (403) is fixedly connected to the upper end face of the intermittent gear (402), and a lever (405) is fixedly connected to the upper end face of the turntable (404) near the tooth groove (406). The lever (405) is used to move the lever (403) to drive the intermittent gear (402) to rotate into the tooth groove (406).

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