Smokeless welding equipment for rack manufacturing

Abstract

The invention relates to the field of rack welding, in particular to smokeless welding equipment for rack manufacturing, which comprises a welding chamber, a collecting bin and the like, a collecting bin is arranged on the lower side of the welding chamber. A flowing cavity is formed between the welding chamber and the isolation frame, meanwhile, the first exhaust pipe generates suction force, then flowing airflow is made to be far away from a welding area, the flowing airflow is prevented from taking away protective gas, and the quality of the welding position of the rack is improved; the guide plate and the first exhaust pipe are matched to guide gas to form a cyclone, and then the gas enters the first exhaust pipe in a gas rotating mode during suction of the first exhaust pipe, so that the gas suction capacity of the first exhaust pipe is improved, and meanwhile protective gas is prevented from being sucked away; flue gas cannot accumulate and stay on the surface of the illuminating lamp through the rectangular holes, a light source of the illuminating lamp is guaranteed, the flue gas is prevented from interfering with welding work of workers, and meanwhile the service cycle of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the field of frame welding, in particular to a smokeless welding device for frame manufacturing. Background Art

[0002] When workers weld the frame, smoke is generated, and the smoke inhaled by the workers will cause harm to the human body. Therefore, the existing treatment method is to add an exhaust pipe in the welding area, and use the exhaust pipe to directly extract the generated smoke at the worker's welding position to prevent the smoke from spreading and being inhaled by the workers. In order to further prevent the smoke from spreading, the existing exhaust pipes are all installed in the welding room, and the welding room is used to separate a separate welding area, thereby reducing the diffusion of smoke, and cooperating with the exhaust pipe to centrally extract the smoke. For the frame welding operation with high welding quality standards, it is necessary to weld the frame by gas shielded welding. The existing welding room usually adds an exhaust pipe on the top, and an air inlet is set at the bottom of the welding room, thereby driving the smoke to flow upward and be extracted. In this process, part of the protective gas used to isolate oxygen, prevent oxidation and stabilize the welding process is extracted together due to the influence of the upward airflow. Therefore, when the worker is welding, the protective gas cannot completely cover the welding area, which has a negative impact on the welding quality of the frame, and problems such as weld oxidation, reduced weld strength and appearance defects occur.

[0003] At the same time, during the welding process, the welding slag produced by the workers is easy to adhere to the floor of the welding room. When welding work is carried out for a long time, the ground is prone to accumulate uneven welding slag, causing workers to be easily tripped by the welding slag accumulated on the ground when changing welding points, thereby increasing the risk of injury to workers during welding work. Summary of the invention

[0004] In order to overcome the shortcomings that when gas shielded welding is required for frame welding, the shielding gas is easily sucked away by the airflow, resulting in poor quality of the frame welding position, and when the fume is extracted, welding slag is easily accumulated on the bottom of the existing welding chamber during the welding process, and workers are easily tripped by the uneven welding slag, the present invention provides a smokeless welding device for frame manufacturing.

[0005] The technical solution of the present invention is: a smokeless welding equipment for frame manufacturing, including a welding chamber, a collecting chamber, a first exhaust pipe, a shielding curtain, a grille plate, an illuminating lamp, a second exhaust pipe and a pad; a collecting chamber is arranged at the lower side of the welding chamber; a collecting chamber is arranged in the collecting chamber; a first exhaust pipe is connected to the upper side of the welding chamber, and the first exhaust pipe is connected to an external pump; a shielding curtain is installed at the front side of the welding chamber; a grille plate is arranged at the upper side of the collecting chamber, and there is a gap between the grille plates; an illuminating lamp is arranged in the welding chamber; a plurality of second exhaust pipes are arranged on the left and right sides of the welding chamber, and each second exhaust pipe is connected to an external pump; a pad is installed at the front side of the collecting chamber; A rack is placed; it also includes an isolation rack, a supporting assembly, an adjusting assembly and a scraping system; an isolation rack is arranged in the welding chamber to prevent the protective gas from being drawn away; a circular hole is opened on the upper side of the isolation rack; the circular hole is connected to the first exhaust pipe; the lower side of the first exhaust pipe is arranged in an inverted frustum shape, and the lower side of the first exhaust pipe is flush with the lower side of the circular hole; a supporting assembly is slidably connected to the upper side of the collecting bin for facilitating the support of different racks; the welding chamber and the collecting bin jointly form a flow cavity, and each second exhaust pipe is connected to the first exhaust pipe through the flow cavity; the welding chamber and the collecting bin are jointly connected to an adjusting assembly for switching the gas flow path; a scraping system for scraping off welding slag is slidably connected to the upper side of the collecting bin.

[0006] As a preferred technical solution of the present invention, the support assembly includes a first electric slider and a support plate; two first slide grooves are opened on the upper side of the collection bin; two first electric sliders are slidably connected to each first slide groove; and each of the two first electric sliders facing each other front and back are commonly fixed to a support plate that supports racks of different sizes.

[0007] As a preferred technical solution of the present invention, the adjustment component includes a first rotating plate and a second rotating plate; two first rotating plates for switching gas flow paths are rotatably connected in the collecting chamber; two second rotating plates are rotatably connected in the welding chamber; each of the first rotating plate and the second rotating plate is fixedly connected to the rotating part of the external motor.

[0008] As a preferred technical solution of the present invention, it also includes a guide plate; a plurality of guide plates for facilitating the extraction of smoke are annularly fixed to the upper side of the isolation frame, and the guide plates are arranged around the circular hole; each guide plate is arranged to be inclined.

[0009] As a preferred technical solution of the present invention, a plurality of rectangular holes are provided on the isolation frame to prevent smoke from affecting the light source; each rectangular hole is located at the lower side of an adjacent lighting lamp, and each rectangular hole is connected to the flow cavity.

[0010] As a preferred technical solution of the present invention, each guide plate is configured to be diamond-shaped.

[0011] As a preferred technical solution of the present invention, the scraping system includes a second electric slider and a baffle; two second slide grooves are opened inside the collection bin; each second slide groove is slidably connected to a second electric slider; the two second electric sliders are commonly fixed with a baffle for scraping welding slag on the facing sides, and the baffle passes through the grille plate, and the baffle is in contact with the grille plate.

[0012] As a preferred technical solution of the present invention, it also includes a filter screen; a plurality of filter screens are fixedly connected inside the collection bin to prevent welding slag from being raised.

[0013] As a preferred technical solution of the present invention, it also includes a cover plate, a slide rail, a third electric slider and a scraper; two cover plates are rotatably connected to the right side of the collecting bin; two slide rails are fixedly connected inside the collecting bin; a third electric slider is slidably connected to each slide rail; and a scraper for cleaning welding slag is commonly fixedly connected to the opposite sides of the two third electric sliders.

[0014] As a preferred technical solution of the present invention, the left and right sides of the baffle are both configured to be serrated, and each serrated depression is located in the gap of the grille plate.

[0015] Beneficial effects: The present invention realizes the formation of a flow cavity between the welding chamber and the isolation frame, and at the same time enables the first exhaust pipe to generate a suction force, thereby making the flowing airflow away from the welding area, preventing the flowing airflow from taking away the protective gas, and improving the quality of the frame welding position; The guiding plate and the first exhaust pipe cooperate to guide the gas to form a cyclone, and then the gas enters the first exhaust pipe in a rotating manner when the first exhaust pipe is sucking, thereby improving the ability of the first exhaust pipe to extract the gas and avoiding the extraction of the protective gas; The rectangular holes prevent smoke from accumulating on the surface of the lamp, ensuring the light source of the lamp and preventing smoke from interfering with the welding work of workers, while extending the service life of the equipment; The baffle is used to scrape off the welding slag adhering to the grating plate, so that the welding slag cannot adhere to the surface of the grating plate, thereby eliminating the need for manual cleaning of the grating plate, reducing manual workload, and preventing workers from being tripped by uneven welding slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the smokeless welding equipment for frame manufacturing of the present invention; Figure 2 A cross-sectional view of a welding chamber of the present invention; Figure 3 It is a front view of the support assembly and the adjustment assembly of the present invention; Figure 4 It is a front view of the first air extraction pipe and the guide plate of the present invention; Figure 5It is a schematic diagram of the three-dimensional structure of the filter screen and the cover plate combination of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the slide rail, the third electric slide block and the scraper assembly of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the second electric slider and the baffle combination of the present invention; Figure 8 It is a front view of the first rotating plate, the second rotating plate and the filter screen of the present invention.

[0017] Markings in the figure are: 1-welding chamber, 1001-flow chamber, 2-collecting chamber, 2001-first slide, 2002-collecting chamber, 2003-second slide, 3-first exhaust pipe, 4-shielding curtain, 5-isolation frame, 5001-circular hole, 5002-rectangular hole, 6-guide plate, 7-grid plate, 8-illumination lamp, 9-second exhaust pipe, 10-pad, 11-frame, 101-first electric slider, 102-support plate, 103-first rotating plate, 104-second rotating plate, 201-second electric slider, 203-filter, 204-baffle, 301-cover plate, 302-slide rail, 303-third electric slider, 304-scraper. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0019] Example 1 like Figure 1-Figure 4 As shown, a smokeless welding equipment for frame manufacturing includes a welding chamber 1, a collecting chamber 2, a first exhaust pipe 3, a shielding curtain 4, a grille plate 7, an illuminating lamp 8, a second exhaust pipe 9 and a pad 10; the collecting chamber 2 is arranged at the lower side of the welding chamber 1; a collecting chamber 2002 is arranged in the collecting chamber 2; the first exhaust pipe 3 is connected to the upper side of the welding chamber 1, and the first exhaust pipe 3 is connected to an external pump; a shielding curtain 4 is installed at the front side of the welding chamber 1; a grille plate 7 is arranged at the upper side of the collecting chamber 2, and there is a gap between the grille plates 7; an illuminating lamp 8 is arranged in the welding chamber 1; a plurality of second exhaust pipes 9 are arranged on the left and right sides of the welding chamber 1, and each second exhaust pipe 9 is connected to an external pump; a pad 10 is installed at the front side of the collecting chamber 2; a frame 11 is placed in the collecting chamber 2; It also includes an isolation frame 5, a supporting assembly, an adjusting assembly and a scraping system; an isolation frame 5 is arranged in the welding chamber 1; a circular hole 5001 is opened on the upper side of the isolation frame 5; the circular hole 5001 is connected to the first exhaust pipe 3; the lower side of the first exhaust pipe 3 is arranged in an inverted cone shape, and the lower side of the first exhaust pipe 3 is flush with the lower side of the circular hole 5001; a supporting assembly is slidably connected to the upper side of the collecting bin 2; the welding chamber 1 and the collecting bin 2 jointly form a flow cavity 1001, and each second exhaust pipe 9 is connected to the first exhaust pipe 3 through the flow cavity 1001; the welding chamber 1 and the collecting bin 2 are jointly connected with an adjusting assembly; a scraping system is slidably connected to the upper side of the collecting bin 2.

[0020] The support assembly includes a first electric slider 101 and a support plate 102; two first slide grooves 2001 are provided on the upper side of the collection bin 2; two first electric sliders 101 are slidably connected to each first slide groove 2001; and each of the two first electric sliders 101 facing each other are fixedly connected to a support plate 102.

[0021] The adjustment assembly includes a first rotating plate 103 and a second rotating plate 104; two first rotating plates 103 are rotatably connected in the collecting bin 2; two second rotating plates 104 are rotatably connected in the welding chamber 1; each of the first rotating plate 103 and the second rotating plate 104 is fixedly connected to the rotating part of the external motor.

[0022] It also includes a guide plate 6; a plurality of guide plates 6 are annularly fixed to the upper side of the isolation frame 5, and the guide plates 6 are arranged around the circular hole 5001; each guide plate 6 is arranged to be inclined.

[0023] The isolation frame 5 is provided with a plurality of rectangular holes 5002 ; each rectangular hole 5002 is located at the lower side of an adjacent lighting lamp 8 , and each rectangular hole 5002 is communicated with the flow chamber 1001 .

[0024] Each guide plate 6 is configured to be in a rhombus shape. When the guide plate 6 is opened, the rhombus-shaped guide plate 6 facilitates the airflow to flow.

[0025] When welding the rack 11, the worker first opens the shielding curtain 4, operates the external transfer equipment to transfer the rack 11 to the welding room 1 through the pad 10, and then controls the two first electric sliders 101 to slide away from or towards each other on the first slide groove 2001, thereby driving the support plate 102 to move away from or towards each other, so as to adapt to the width of the rack 11 of different sizes. After the support plate 102 is adjusted, the rack 11 is placed on the support plate 102 for support, so that the distance between the rack 11 and the grid plate 7 is maintained, and then the worker places the shielding curtain 4 as shown in the figure. Figure 1The welding chamber 1 is closed in the manner shown, and the lighting lamp 8 is turned on. At this time, the worker can weld the frame 11 through the handheld welding equipment, and the second exhaust pipe 9 is evacuated through the external pump. At the same time, the pump on the first exhaust pipe 3 is turned on to start supplying gas to the welding chamber 1. In this process, the outside gas enters the welding chamber 1 from the circular hole 5001. When the worker generates welding smoke during the welding process, the initial state is as shown in FIG. Figure 3 The first rotating plate 103 and the second rotating plate 104 shown in the figure allow the external gas to enter the welding chamber 1 and be sucked by the second exhaust pipe 9 and blocked by the isolation frame 5, forcing the gas to flow from top to bottom through the gaps in the grid plate 7 and then enter the collecting chamber 2002, and finally be extracted through the second exhaust pipe 9. In this process, the smoke generated by welding is driven to pass through the gaps in the grid plate 7, and then the welding smoke first passes through the gaps in the grid plate 7 and then is extracted by the second exhaust pipe 9 with transverse suction. Since the workers are standing on the upper side of the grid plate 7 to perform welding work at this time, the welding smoke is prevented from floating toward the workers, thereby creating a smoke-free welding environment for the workers.

[0026] In the above process, when faced with the task of welding the frame 11 with strict positioning and quality standards, it is necessary to improve the welding quality of the frame 11 welding position by means of gas shielded welding. Since the jet device of the welding gun sprays out the shielding gas, and then covers the welding area of ​​the frame 11, thereby isolating the external oxygen, when the worker uses gas shielded welding, due to the method of extracting the fume by the second exhaust pipe 9, the flow path of the airflow in the welding chamber 1 passes through the welding area, which may easily cause part of the shielding gas to be carried away by the airflow. The loss of the shielding gas leads to insufficient protection of the welding area, resulting in the frame The quality of the welding area 11 is not good, and the existing gas shielded welding will add a gas hood to prevent the shielding gas from being disturbed by the external airflow. The gas hood is used to cover the welding area to block the interference of the external airflow on the shielding gas. When welding the frame 11 with the added gas hood, when encountering a narrow area of ​​the welding frame 11, the addition of the gas hood is limited by the narrow space, which makes it difficult for the welding gun to extend into the welding area for welding, resulting in difficulty in welding in the narrow area of ​​the frame 11. In order to avoid this phenomenon, when special gas shielded welding is required, based on the view from the front to the back, the first The first rotating plate 103 and the second rotating plate 104 rotate synchronously by 90 degrees, so that the first rotating plate 103 is in a horizontal state and the second rotating plate 104 is in a vertical state, and then the external pump is controlled to change the working state of the first exhaust pipe 3 and the second exhaust pipe 9, so that the first exhaust pipe 3 is exhausted and the second exhaust pipe 9 starts to take in air. During the intake process of the second exhaust pipe 9, the gas is blocked by the first rotating plate 103 and cannot flow to the collection chamber 2002, so that the gas flows upward in the flow chamber 1001. When the gas flows to the position of the first exhaust pipe 3, the gas is then exhausted through the first exhaust pipe 3. Due to the gas protection During welding, the shielding gas is used to isolate the outside oxygen from entering the welding area, thereby generating less harmful welding smoke during the welding process. This small amount of welding smoke naturally floats upward in the welding room 1, and is then extracted through the first exhaust pipe 3, so that the welding smoke in the welding room 1 is extracted in time. Moreover, since the suction position of the first exhaust pipe 3 is far away from the welding area, when the suction force is generated at the first exhaust pipe 3, the shielding gas in the welding area is not affected by the suction force, thereby ensuring the welding environment of the workers while preventing the shielding gas from being affected by the airflow generated by the suction, thereby ensuring the welding protection of the welding position.

[0027] It is also taken into consideration that, due to the welding smoke itself drifting upward and flowing toward the top of the welding chamber 1 under the action of the suction force of the first exhaust pipe 3, when the workers weld on the same welding area for a long time, welding smoke will accumulate above the welding chamber 1 and cannot be extracted in time. If the suction force of the first exhaust pipe 3 is increased, the protective gas is easily extracted together by the strong suction effect, and thus the protection effect on the welding area cannot be achieved. Therefore, by adding a plurality of guide plates 6 in a ring on the isolation frame 5, when the external gas flowing in the flow chamber 1001 passes through the guide plate 6, the external gas is guided and blocked by the guide plate 6, forcing it to change its flow direction. At the same time, the inclined guide plate 6 also guides the external gas to flow downward, so that the external gas converges from different directions after passing through the guide plate 6, and this directional deflection will cause the airflow to rotate. At the same time, due to The lower side of the first exhaust pipe 3 is set to be an inverted cone shape, and the lower side of the first exhaust pipe 3 is flush with the lower side of the circular hole 5001, so that the external gas flowing through the guide plate 6 has a height deviation when flowing into the lower side pipe opening of the first exhaust pipe 3. In this process, the external gas flows from a high place to a low place on the lower side of the first exhaust pipe 3, so that the external gas originally guided by the guide plate 6 flows downward along the inverted cone surface on the lower side of the first exhaust pipe 3. As the airflow moves downward along the inclined plane, it gradually approaches the suction port on the lower side of the first exhaust pipe 3, so that the flow rate of the external gas increases, and then a cyclone is generated to enter the first exhaust pipe 3. By utilizing the cyclone entering the first exhaust pipe 3, the welding smoke accumulated above the welding chamber 1 is affected by the cyclone and is drawn into the lower side of the first exhaust pipe 3, thereby facilitating the extraction of welding smoke and avoiding welding smoke accumulation, while protecting the protective gas from being affected.

[0028] It is also considered that when smoke accumulates on the top of the welding room 1, the metal impurities contained in the smoke will adhere to the surface of the lighting lamp 8, which will affect the light transmittance of the lighting lamp 8 over time, causing the light to dim or scatter, reducing the light intensity and uniformity in the working area, and thus affecting the welding operation of the workers. In addition, too much metal impurities attached to the surface of the lighting lamp 8 will also affect its heat dissipation effect, causing heat accumulation and damage to the lighting lamp 8, shortening its service life. In order to avoid smoke interfering with the lighting lamp 8 and to improve the effect of the equipment on smoke extraction, a rectangular hole is opened on the isolation frame 5. 5002, and the rectangular hole 5002 is located at the lower side of the lighting lamp 8. When external gas flows in from the flow cavity 1001, part of the gas also flows into the welding chamber 1 through the rectangular hole 5002, and then is sucked away by the first exhaust pipe 3 through the circular hole 5001, so that the airflow passes through the lower side of the lighting lamp 8, so that the smoke cannot stay on the surface of the lighting lamp 8, preventing the surface of the lighting lamp 8 from adhering to metal impurities, thereby ensuring the lighting effect in the welding chamber 1, and the airflow flowing in from the rectangular hole 5002 can also take away the heat emitted from the surface of the lighting lamp 8, thereby improving the heat dissipation effect of the lighting lamp 8 and extending its service life.

[0029] Example 2 On the basis of Example 1, Figure 1 and Figure 5-Figure 8 As shown, the scraping system includes a second electric slider 201 and a baffle 204; two second slide grooves 2003 are opened inside the collecting bin 2; each second slide groove 2003 is slidably connected to a second electric slider 201; the two second electric sliders 201 are fixedly connected to a baffle 204 on the facing sides, and the baffle 204 passes through the grille plate 7, and the baffle 204 is in contact with the grille plate 7.

[0030] It also includes a filter screen 203; two filter screens 203 are fixedly connected inside the collection bin 2.

[0031] It also includes a cover plate 301, a slide rail 302, a third electric slider 303 and a scraper 304; two cover plates 301 are rotatably connected to the right side of the collecting bin 2; each cover plate 301 is provided with a handle; two slide rails 302 are fixedly connected inside the collecting bin 2; each slide rail 302 is slidably connected to a third electric slider 303; a scraper 304 is fixedly connected to the opposite sides of the two third electric sliders 303.

[0032] The left and right sides of the baffle 204 are both serrated, and each serrated depression is located in the gap of the grid plate 7, which is convenient for scraping off the residual welding slag on the grid plate 7 and preventing the welding slag from adhering to the grid plate 7 and tripping the workers. At the same time, the scraped welding slag is guided by the serrated shape and falls into the collection bin 2, which is convenient for collecting the welding slag.

[0033] When workers perform non-gas shielded welding, the gas flows from the welding chamber 1 into the grid plate 7, and then is extracted from the gap between the grid plates 7 through the collecting chamber 2002 and the second exhaust pipe 9, and then the smoke is discharged. In this process, a large amount of welding slag is generated during the welding operation. Since the welding slag is solid, the welding slag is easy to cool and solidify on the surface of the grid plate 7 during the falling process. Over time, a large amount of welding slag is easy to accumulate and adhere to the surface of the grid plate 7, thereby forming an uneven shape on the surface of the grid plate 7. When workers need to move and replace the welding In order to avoid this phenomenon, the baffle plate 204 is driven by the second electric slider 201 to slide on the second slide groove 2003, so that the baffle plate 204 moves on the grid plate 7, and then the welding slag adhered to the grid plate 7 is scraped off, so that the welding slag cannot adhere to the surface of the grid plate 7, and the scraped welding slag falls into the collection bin 2 along the gap between the grid plates 7, so that there is no need for manual cleaning of the grid plate 7 later, thereby reducing the manual workload and preventing workers from being tripped by the uneven welding slag.

[0034] It is also considered that when the airflow flows along the gap of the grid plate 7 to the second exhaust pipe 9, since the second exhaust pipe 9 is close to the bottom of the collection bin 2 and the suction force at the position of the second exhaust pipe 9 is large, the welding slag is carried by the airflow and floats to the second exhaust pipe 9, causing the welding slag to easily fly to the outside. In order to avoid this phenomenon, Figure 5 As shown, when the welding slag falls into the collecting bin 2, the second exhaust pipe 9 starts to exhaust gas. After the gas is extracted through the second exhaust pipe 9, the welding slag is intercepted by the filter 203 and cannot be carried to the second exhaust pipe 9 by the airflow, and then remains in the collecting bin 2, thereby preventing the welding slag from splashing to the outside. At the same time, when the welding slag in the collecting bin 2 needs to be cleaned, the third electric slider 303 is started to move to the right on the slide rail 302, thereby driving the scraper 304 to move to the right, thereby pushing the welding slag collected in the collecting bin 2 to move to the right. At the same time, the worker holds the handles on the two cover plates 301 to open the cover plates 301, and pushes the welding slag out of the collecting bin 2 while the scraper 304 continues to move to the right, so as to facilitate the subsequent workers to collect and clean the welding slag.

[0035] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. A smokeless welding device for manufacturing a frame, comprising a welding chamber (1), a collecting chamber (2), a first exhaust pipe (3), a shielding curtain (4), a grille plate (7), an illuminating lamp (8), a second exhaust pipe (9) and a pad (10); the collecting chamber (2) is arranged at the lower side of the welding chamber (1); a collecting chamber (2002) is arranged in the collecting chamber (2); the upper side of the welding chamber (1) is connected to the first exhaust pipe (3), and the first exhaust pipe (3) is connected to an external pump; the front side of the welding chamber (1) is installed with a shielding curtain (4); the upper side of the collecting chamber (2) is provided with a grille plate (7), and there is a gap between the grille plates (7); the welding chamber (1) is provided with an illuminating lamp (8); a plurality of second exhaust pipes (9) are arranged on the left and right sides of the welding chamber (1), and each second exhaust pipe (9) is connected to an external pump; the front side of the collecting chamber (2) is installed with a pad (10); a frame (11) is placed in the collecting chamber (2); the characteristics are: The invention also comprises an isolation frame (5), a support assembly, an adjustment assembly and a scraping system; an isolation frame (5) for preventing the shielding gas from being drawn away is arranged in the welding chamber (1); a circular hole (5001) is opened on the upper side of the isolation frame (5); the circular hole (5001) is connected to the first exhaust pipe (3); the lower side of the first exhaust pipe (3) is arranged in an inverted truncated cone shape, and the lower side of the first exhaust pipe (3) is flush with the lower side of the circular hole (5001); a support assembly for supporting different racks (11) is slidably connected to the upper side of the collecting bin (2); the welding chamber (1) and the collecting bin (2) together form a flow chamber (1001), and each second exhaust pipe (9) is connected to the first exhaust pipe (3) through the flow chamber (1001); the welding chamber (1) and the collecting bin (2) are jointly connected to an adjustment assembly for switching the gas flow path; and a scraping system for scraping off welding slag is slidably connected to the upper side of the collecting bin (2).

2. The smokeless welding equipment for frame manufacturing according to claim 1 is characterized in that: The support assembly comprises a first electric slider (101) and a support plate (102); two first slide grooves (2001) are provided on the upper side of the collection bin (2); two first electric sliders (101) are slidably connected to each first slide groove (2001); and each of the two first electric sliders (101) facing each other front and back are fixedly connected to a support plate (102) supporting racks (11) of different sizes.

3. The smokeless welding equipment for frame manufacturing according to claim 2 is characterized in that: The regulating assembly comprises a first rotating plate (103) and a second rotating plate (104); two first rotating plates (103) for switching gas flow paths are rotatably connected in the collecting chamber (2); and two second rotating plates (104) are rotatably connected in the welding chamber (1); each of the first rotating plate (103) and the second rotating plate (104) is fixedly connected to a rotating part of an external motor.

4. The smokeless welding equipment for frame manufacturing according to claim 1 is characterized in that: It also includes a guide plate (6); a plurality of guide plates (6) for facilitating extraction of smoke are annularly fixedly connected to the upper side of the isolation frame (5), and the guide plates (6) are arranged around the circular hole (5001); each guide plate (6) is arranged in an inclined shape.

5. The smokeless welding equipment for frame manufacturing according to claim 4 is characterized in that: The isolation frame (5) is provided with a plurality of rectangular holes (5002) for preventing smoke from affecting the light source; each rectangular hole (5002) is located at the lower side of an adjacent lighting lamp (8), and each rectangular hole (5002) is connected to the flow chamber (1001).

6. The smokeless welding equipment for frame manufacturing according to claim 4 is characterized in that: Each guide plate (6) is configured in a rhombus shape.

7. The smokeless welding equipment for frame manufacturing according to claim 3 is characterized in that: The scraping system comprises a second electric slider (201) and a baffle (204); two second slide grooves (2003) are provided inside the collection bin (2); each second slide groove (2003) is slidably connected to a second electric slider (201); a baffle (204) for scraping welding slag is fixedly connected to the opposite sides of the two second electric sliders (201), and the baffle (204) passes through the grid plate (7), and the baffle (204) is in contact with the grid plate (7).

8. The smokeless welding equipment for frame manufacturing according to claim 7 is characterized in that: It also includes a filter screen (203); a plurality of filter screens (203) are fixedly connected inside the collection bin (2) to prevent welding slag from being raised.

9. The smokeless welding equipment for frame manufacturing according to claim 8, characterized in that: It also includes a cover plate (301), a slide rail (302), a third electric slider (303) and a scraper (304); the right side of the collection bin (2) is rotatably connected to two cover plates (301); the inside of the collection bin (2) is fixedly connected to two slide rails (302); each slide rail (302) is slidably connected to a third electric slider (303); and the two third electric sliders (303) are fixedly connected to the opposite sides thereof with a scraper (304) for facilitating cleaning of welding slag.

10. The smokeless welding equipment for frame manufacturing according to claim 7, characterized in that: The left and right sides of the baffle plate (204) are both configured to be sawtooth-shaped, and each sawtooth-shaped recess is located at a gap in the grille plate (7).

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