Logistics shelf steel welding device with flue gas purification function

By designing a logistics shelf steel welding device with flue gas purification function, the shortcomings of traditional welding devices in flue gas purification and welding accuracy and efficiency are solved, and flue gas purification during the welding process, stable clamping and precise alignment of steel are achieved, and welding quality and production efficiency are improved.

CN119703513APending Publication Date: 2025-03-28HENAN JIUWEI INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510017324.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Traditional logistics shelf steel welding devices have shortcomings in flue gas purification and welding accuracy and efficiency, resulting in workshop environmental pollution, damage to the health of operators, low welding quality and low production efficiency.

Method used

A logistics shelf steel welding device with flue gas purification function is designed, including a welding box, an external robotic arm and a flue gas purification assembly. The welding box is equipped with a fixed shaft and a flip motor, which is matched with the fixture and the distance adjustment component to achieve stable clamping and precise alignment of the steel. The flue gas purification component effectively collects and purifies the flue gas generated during welding through components such as smoke collection hoods, multi-pass smoke collection pipes, suction pumps and purification boxes.

Benefits of technology

Effectively purify the flue gas generated during welding, reduces the workshop environmental pollution and the health risks of operators, improves welding quality and production efficiency, reduces defective rates and production costs, and enhances the utilization rate of equipment and the market competitiveness of enterprises.

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Abstract

The invention relates to the technical field of logistics shelf steel processing, in particular to a logistics shelf steel welding device with a flue gas purification function, which comprises a welding box and an external mechanical arm, a fixing shaft is rotatably mounted in the welding box, one end of the fixing shaft extends to the outside of the welding box to be fixedly connected with an output shaft of an overturning motor arranged on the outer side wall of the welding box, welding workbenches are evenly arranged on the outer side wall of the fixing shaft, and welding steel is mounted on the side walls of the welding workbenches through clamps. A welding head is fixedly mounted at the mounting end of the external mechanical arm, the welding head and a through groove in the side wall of the welding box are slidably mounted in a matched mode, and a flue gas purification assembly is arranged above the welding box. The flue gas purification assembly has the beneficial effects that flue gas generated in the welding process can be effectively collected and purified through the flue gas purification assembly, the gas suction pump and the multi-way flue gas collection pipe are matched with the flue gas collection holes of the flue gas collection hood, the flue gas in the welding box can be comprehensively and rapidly pumped out, and the flue gas is prevented from being diffused in a workshop.
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Description

Technical Field

[0001] The invention relates to the technical field of logistics rack steel processing, and in particular to a logistics rack steel welding device with a fume purification function. Background Art

[0002] In the production process of logistics racks, steel welding is one of the key links. Traditional logistics rack steel welding devices usually perform welding operations in an open environment, which has many disadvantages.

[0003] A large amount of fume is generated during the welding process, and these fumes contain a variety of harmful substances, such as metal oxide particles and harmful gases (such as carbon monoxide, nitrogen oxides, etc.). On the one hand, these harmful substances are directly discharged into the workshop air, which will seriously pollute the workshop environment, affect the air quality in the workshop, and cause potential damage to other equipment and materials. At the same time, it does not meet environmental protection requirements. On the other hand, operators exposed to such a polluted environment for a long time will inhale a large amount of harmful smoke and gas, which will cause great harm to their health, easily cause respiratory diseases, lung diseases and other occupational diseases, reduce work efficiency, and increase the company's labor costs and health risks.

[0004] In addition, traditional welding devices also have shortcomings in welding accuracy and efficiency. When welding steel of different specifications, it often takes a lot of time to manually adjust and position, resulting in long welding preparation time and low production efficiency. Moreover, due to the lack of effective positioning and fixing devices, steel is prone to displacement during welding, affecting the welding quality, resulting in uneven welds, insufficient welding strength and other problems, increasing the defective rate of products, increasing production costs, and not conducive to enterprises maintaining their dominant position in market competition.

[0005] Therefore, we propose a logistics shelf steel welding device with fume purification function to solve the above problems. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention discloses a logistics shelf steel welding device with a fume purification function. The technical solution adopted is that it includes a welding box and an external robotic arm. A fixed shaft is rotatably installed inside the welding box, and one end of the fixed shaft extends to the outside of the welding box and is fixedly connected to the output shaft of a flip motor arranged on the outer wall of the welding box. Welding workbenches are evenly arranged on the outer walls of the fixed shaft. Welding steel is installed on the side walls of the welding workbenches through clamps. A welding head is fixedly installed on the mounting end of the external robotic arm, and the welding head is slidably installed in cooperation with the through groove of the side wall of the welding box. A fume purification component is arranged above the welding box.

[0007] As a preferred technical solution of the present invention, the clamp includes a distance adjustment component and a limit component.

[0008] As a preferred technical solution of the present invention, the pitch adjustment assembly includes a rotating motor, a pitch adjustment slot, an adjusting rod and a pitch adjustment block. The pitch adjustment slot is symmetrically opened on the side wall surface of the welding workbench, and the adjusting rod is rotatably installed inside the pitch adjustment slot. The rotating motor is installed inside the motor slot on the side wall surface of the welding workbench and the output shaft of the rotating motor extends to the inside of the pitch adjustment slot and is fixedly connected to one end of the adjusting rod. The pitch adjustment block is arranged inside the pitch adjustment slot and the screw hole on the side wall of the pitch adjustment block is threadedly installed in cooperation with the thread on the outer wall of the adjusting rod.

[0009] As a preferred technical solution of the present invention, the limit assembly includes a side fixing plate, a screw and a lower pressure plate, the side fixing plate is an L-shaped plate, the bottom end of the side fixing plate is fixedly connected to the side wall of the distance adjusting block, the screw is inserted and threadedly installed inside the screw hole on the upper surface of the side fixing plate, and the lower end of the screw is rotatably connected to the upper end of the outer wall of the lower pressure plate.

[0010] As a preferred technical solution of the present invention, the fume purification component includes a smoke hood, a smoke collecting hole, a multi-way smoke collecting pipe, an air suction pump, a purification box and an exhaust pipe. The smoke hood is arranged inside the smoke hood groove on the upper surface of the welding box, and the smoke collecting holes are evenly penetrated through the upper surface of the inner cavity of the smoke hood. The air suction pump and the purification box are respectively arranged on the upper surface of the welding box. The air inlet ends of the multi-way smoke collecting pipes are respectively connected to the smoke collecting holes, and the air outlet ends of the multi-way smoke collecting pipes are connected to the air inlet of the air suction pump. The air outlet of the air suction pump is connected to the air inlet of the purification box through a hose, and the exhaust pipe is arranged at the upper end of the outer wall of the purification box and the exhaust pipe is connected to the air outlet of the side wall of the purification box.

[0011] As a preferred technical solution of the present invention, an electrostatic adsorption plate is arranged in the middle of the inner cavity of the purification box, a pre-filter plate is arranged on the side of the purification box close to the air inlet, and an adsorption plate is arranged on one end of the purification box close to the exhaust pipe.

[0012] As a preferred technical solution of the present invention, the pre-filter screen plate is a fine metal filter screen, the electrostatic adsorption plate is an electrode plate, and the adsorption plate is an activated carbon plate.

[0013] As a preferred technical solution of the present invention, a lower sealing block is provided on the lower surface of the inner cavity of the welding box, and the upper surface of the lower sealing block is slidably mounted in cooperation with the corner of the outer wall of the welding workbench.

[0014] As a preferred technical solution of the present invention, a door slot is provided at one end of the welding box, and a safety door engaged with the door slot is rotatably installed at the top of the door slot through a rotating shaft, and a visual window is provided on the side wall of the safety door.

[0015] Beneficial effects of the present invention:

[0016] 1. The fume purification component of the present invention can effectively collect and purify the fume generated during welding. Through the suction pump and the multi-pass fume collecting pipe and the fume collecting hole of the fume collecting hood, the fume in the welding box can be completely and quickly extracted to prevent the fume from spreading in the workshop. The pre-filter screen plate, the electrostatic adsorption plate and the adsorption plate in the purification box work together to deeply treat the fume. The pre-filter screen plate first intercepts larger particles of smoke dust, the electrostatic adsorption plate uses a high-voltage electric field to adsorb tiny particles, and the activated carbon adsorption plate further adsorbs harmful gases, effectively removing odors and toxic and harmful gas components in the fume, ensuring that the discharged gas meets environmental protection standards, greatly reducing pollution to the workshop environment, protecting the health of operators, and also enabling enterprises to meet environmental protection laws and regulations and avoid potential risks and penalties caused by environmental problems.

[0017] 2. The welding workbench can achieve stable flipping through the cooperation of the fixed axis and the flip motor, which is convenient for welding steels in different positions. The stability of the workbench ensures that the steel will not produce displacement deviation due to the shaking of the workbench during welding. The distance adjustment component of the fixture uses a rotating motor to drive the adjustment rod to rotate and accurately adjust the position of the distance adjustment block to adapt to welding steels of different sizes, ensuring that the steel can be accurately aligned before welding. The side fixing plate and the lower pressure plate of the limit assembly can achieve a stable clamping of the steel through the screw, effectively preventing the steel from moving during welding, ensuring the consistency and welding strength of the weld, reducing the defective rate, improving product quality, and enhancing the safety and reliability of the logistics shelf in actual use;

[0018] 3. After welding is completed, the external robotic arm can quickly move the welding head out of the welding box, and the flip motor will start immediately to quickly flip the welding workbench, so that the next piece of steel to be welded enters the processing position. At the same time, the welded steel is moved to the material change position for material picking and material change operations. The whole process is smooth and efficient, without excessive manual intervention. This cyclic operation method greatly reduces the welding preparation time and non-welding operation time, improves the utilization rate of equipment, and enables enterprises to produce more logistics shelf products in the same time, meet the growing market demand, enhance the market competitiveness of enterprises, and bring higher economic benefits to enterprises.

[0019] 4. The safety door is connected with the door slot through the rotating shaft, which can effectively close the welding area, prevent the operator from accidentally touching the welding head or suffering other accidental injuries during the welding process, and improve the safety of operation. The visual window is convenient for the operator to observe the welding situation during the welding process, find problems in time and make adjustments. There is no need to open the safety door frequently, which reduces the leakage of heat and smoke, and further ensures the stability of the welding environment. At the same time, the automated welding and workbench flipping process reduces the labor intensity of the operator, enabling him to complete his work tasks more easily and efficiently, improving work comfort and work efficiency, which is conducive to the long-term and stable production of high-quality logistics shelf products by the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a first stereoscopic diagram of the structure of the present invention;

[0022] Figure 2 It is a second stereoscopic view of the structure of the present invention;

[0023] Figure 3 It is a top view of the structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 AA cross-sectional structure schematic diagram;

[0025] Figure 5 It is a left view of the welding workbench of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of BB cross-section structure;

[0027] Figure 7 For the present invention Figure 5 Schematic diagram of CC cross-section structure;

[0028] Figure 8 It is a schematic diagram of the structure of the flue gas purification component of the present invention.

[0029] In the figure: 1 welding box, 2 welding workbench, 3 fixed axis, 4 flip motor, 5 fixture, 501 rotating motor, 502 distance adjustment slot, 503 adjusting rod, 504 distance adjustment block, 505 side fixing plate, 506 rotating screw, 507 lower pressure plate, 6 lower sealing block, 7 fume purification component, 701 fume hood, 702 fume collecting hole, 703 multi-pass fume collecting pipe, 704 suction pump, 705 purification box, 706 exhaust pipe, 8 external robot arm, 9 welding head, 10 safety door, 11 welding steel, 12 pre-filter plate, 13 electrostatic adsorption plate, 14 adsorption plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 8 As shown, the present invention discloses a logistics shelf steel welding device with a fume purification function, and the technical scheme adopted is that it includes a welding box 1 and an external mechanical arm 8, the welding box 1 is internally rotatably installed with a fixed shaft 3, and one end of the fixed shaft 3 extends to the outside of the welding box 1 and is fixedly connected to the output shaft of a flip motor 4 arranged on the outer wall of the welding box 1, the outer wall of the fixed shaft 3 is evenly provided with a welding workbench 2, the side wall of the welding workbench 2 is installed with a welding steel 11 through a clamp 5, the mounting end of the external mechanical arm 8 is fixedly installed with a welding head 9, and the welding head 9 is slidably installed in cooperation with the through groove of the side wall of the welding box 1, and a fume purification component 7 is arranged above the welding box 1, by placing the welding steel 11 on the side wall of the welding workbench 2, and clamping and fixing it through the clamp 5, and then through the external The robot arm 8 drives the welding head 9 to move, and makes the welding head 9 extend through the through slot of the side wall of the welding box 1 to the inside of the welding box 1, and performs welding processing on the welding joint of the welding steel 11. At the same time, the fume generated during the welding of the welding head 9 and the welding steel 11 is collected and purified and discharged through the fume purification component 7. After the welding is completed, the welding head 9 is moved to the outside of the welding box 1 through the through slot of the side wall of the welding box 1 by the external robot arm 8, and then the flip motor 4 is started to drive the fixed shaft 3 to flip inside the welding box 1 through its output shaft, so that the welding workbench 2 set on the outer wall of the fixed shaft 3 is flipped, and another welding workbench 2 is moved to the processing position. At the same time, the welding workbench 2 moves to the material changing position to take and change materials for cyclic welding.

[0032] As a preferred technical solution of the present invention, the clamp 5 includes a distance adjustment component and a position limiting component.

[0033] As a preferred technical solution of the present invention, the pitch adjustment component includes a rotating motor 501, a pitch adjustment slot 502, an adjusting rod 503 and a pitch adjustment block 504. The pitch adjustment slot 502 is symmetrically arranged on the side wall surface of the welding workbench 2, and the adjusting rod 503 is rotatably installed inside the pitch adjustment slot 502. The rotating motor 501 is installed inside the motor slot on the side wall surface of the welding workbench 2 and the output shaft of the rotating motor 501 extends to the inside of the pitch adjustment slot 502 and is fixedly connected to one end of the adjusting rod 503. The pitch adjustment block 504 is arranged inside the pitch adjustment slot 502 and the screw hole on the side wall of the pitch adjustment block 504 is threadedly installed with the thread of the outer wall of the adjusting rod 503. By starting the rotating motor 501, the rotating motor 501 drives the adjusting rod 503 to rotate inside the pitch adjustment slot 502 through its output shaft, and then the pitch adjustment block 504 is threadedly driven on the outside of the adjusting rod 503 to complete the displacement adjustment of the pitch adjustment block 504.

[0034] As a preferred technical solution of the present invention, the limiting assembly includes a side fixing plate 505, a screw rod 506 and a lower pressure plate 507. The side fixing plate 505 is an L-shaped plate. The bottom end of the side fixing plate 505 is fixedly connected to the side wall of the distance adjusting block 504. The screw rod 506 is inserted and threadedly installed inside the screw hole on the upper surface of the side fixing plate 505. The lower end of the screw rod 506 is rotatably connected to the upper end of the outer wall of the lower pressure plate 507. By rotating the screw rod 506, the screw rod 506 is threadedly transmitted inside the screw hole on the upper surface of the side fixing plate 505, and then the screw rod 506 drives the lower pressure plate 507 rotatably connected to its lower end for displacement adjustment, thereby realizing the coordinated downward pressure fixation of the lower pressure plate 507 and the welded steel 11.

[0035] As a preferred technical solution of the present invention, the fume purification component 7 includes a fume hood 701, a fume collecting hole 702, a multi-pass fume collecting pipe 703, an air suction pump 704, a purification box 705 and an exhaust pipe 706. The fume hood 701 is arranged inside the fume hood groove on the upper surface of the welding box 1. The fume collecting hole 702 evenly penetrates the upper surface of the inner cavity of the fume hood 701. The air suction pump 704 and the purification box 705 are respectively arranged on the upper surface of the welding box 1. The air inlet end of the multi-pass fume collecting pipe 703 is connected to the fume collecting hole 702, and the air outlet end of the multi-pass fume collecting pipe 703 is connected to the air suction pump 704. The air inlet of the welding box 1 is connected, the air outlet of the suction pump 704 is connected with the air inlet of the purification box 705 through a hose, the exhaust pipe 706 is arranged at the upper end of the outer wall of the purification box 705 and the exhaust pipe 706 is connected with the air outlet of the side wall of the purification box 705, the smoke generated by welding inside the welding box 1 is collected by the suction pump 704 and the multi-way smoke collecting pipe 703 through the smoke collecting hole 702 of the smoke collecting hood 701, and then the suction pump 704 transports the collected smoke to the inside of the purification box 705 through the hose, and after being purified by the purification box 705, it is discharged to the outside through the exhaust pipe 706.

[0036] As a preferred technical solution of the present invention, an electrostatic adsorption plate 13 is arranged in the middle of the inner cavity of the purification box 705, a pre-filter screen plate 12 is arranged on the side of the purification box 705 close to the air inlet, and an adsorption plate 14 is arranged on one end of the purification box 705 close to the exhaust pipe 706. The pre-filter screen plate 12 can preliminarily filter out larger particles of smoke and dust, and the electrostatic adsorption plate 13 is acted on by the high-voltage electric field to make tiny smoke and dust particles charged and adsorbed on the electrode plate. The adsorption plate 14 deeply adsorbs harmful gases, thereby effectively removing odor and toxic and harmful gas components in the smoke.

[0037] As a preferred technical solution of the present invention, the pre-filter screen plate 12 is a fine metal filter screen, the electrostatic adsorption plate 13 is an electrode plate, and the adsorption plate 14 is an activated carbon plate.

[0038] As a preferred technical solution of the present invention, a lower sealing block 6 is provided on the lower surface of the inner cavity of the welding box 1, and the upper surface of the lower sealing block 6 is slidably installed in cooperation with the edges and corners of the outer wall of the welding workbench 2. The lower sealing block 6 can be used to seal the bottom end of the inner cavity of the welding box 1 without affecting the flipping of the welding workbench 2, thereby preventing smoke from escaping from the bottom of the inner cavity of the welding box 1.

[0039] As a preferred technical solution of the present invention, a door slot is provided at one end of the welding box and a safety door 10 is installed on the top of the door slot through a rotating shaft and engaged with the door slot. A visual window is provided on the side wall of the safety door 10. The door slot can be closed by the safety door 10 engaged with the door slot through a rotating shaft, thereby improving the operational safety of the logistics shelf steel welding device with a fume purification function.

[0040] The working principle of the present invention is as follows: by placing the welding steel 11 on the side wall of the welding workbench 2, and by starting the rotating motor 501, the rotating motor 501 drives the adjusting rod 503 to rotate inside the distance adjusting slot 502 through its output shaft, and then the distance adjusting block 504 is threadedly driven on the outside of the adjusting rod 503, so as to complete the displacement adjustment of the distance adjusting block 504, and drive the side fixing plate 505 to move, and then by rotating the screw rod 506, the screw rod 506 is threadedly driven inside the screw hole on the upper surface of the side fixing plate 505, and then the screw rod 506 drives the lower pressure plate 507 connected to the lower end thereof to move and adjust the displacement, so as to realize the coordinated downward pressing and fixing of the lower pressure plate 507 and the welding steel 11, and then the welding head 9 is driven to move through the through slot on the side wall of the welding box 1 and extend to the inside of the welding box 1, The welding part of the welding steel 11 is welded, and at the same time, the smoke generated by welding inside the welding box 1 is collected through the smoke collecting hole 702 of the smoke collecting hood 701 by the suction pump 704 and the multi-channel smoke collecting pipe 703, and then the suction pump 704 transports the collected smoke to the inside of the purification box 705 through the hose, and after being purified by the purification box 705, it is discharged to the outside through the exhaust pipe 706. After the welding is completed, the welding head 9 is moved to the outside of the welding box 1 through the through groove of the side wall of the welding box 1 by the external robot arm 8, and then the flip motor 4 is started, so that the flip motor 4 drives the fixed shaft 3 to flip inside the welding box 1 through its output shaft, so that the welding workbench 2 set on the outer wall of the fixed shaft 3 is flipped, and the other welding workbench 2 is moved to the processing position, and at the same time, the welding workbench 2 is moved to the material changing position to take and change materials for cyclic welding.

[0041] The circuit connection involved in the present invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0042] Components not described in detail herein are prior art.

[0043] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the protection scope of the present invention.

Claims

1. A logistics shelf steel welding device with a fume purification function, comprising a welding box (1) and an external mechanical arm (8), characterized in that: A fixed shaft (3) is rotatably mounted inside the welding box (1), and one end of the fixed shaft (3) extends to the outside of the welding box (1) and is fixedly connected to the output shaft of a flip motor (4) arranged on the outer wall of the welding box (1). Welding workbenches (2) are evenly arranged on the outer wall of the fixed shaft (3), and welding steel (11) is installed on the side wall of the welding workbench (2) through a clamp (5). A welding head (9) is fixedly mounted on the mounting end of the external mechanical arm (8), and the welding head (9) is slidably mounted in cooperation with a through groove on the side wall of the welding box (1). A fume purification component (7) is arranged above the welding box (1).

2. The logistics shelf steel welding device with fume purification function according to claim 1 is characterized in that: The clamp (5) comprises a distance adjustment component and a position limiting component.

3. The logistics shelf steel welding device with fume purification function according to claim 2 is characterized by: The pitch adjustment assembly comprises a rotating motor (501), a pitch adjustment slot (502), an adjusting rod (503) and a pitch adjustment block (504); the pitch adjustment slot (502) is symmetrically arranged on the side wall surface of the welding workbench (2); the adjusting rod (503) is rotatably mounted inside the pitch adjustment slot (502); the rotating motor (501) is mounted inside the motor slot on the side wall surface of the welding workbench (2); the output shaft of the rotating motor (501) extends into the inside of the pitch adjustment slot (502) and is fixedly connected to one end of the adjusting rod (503); the pitch adjustment block (504) is arranged inside the pitch adjustment slot (502); a screw hole on the side wall of the pitch adjustment block (504) is threadably mounted in cooperation with a screw thread on the outer wall of the adjusting rod (503).

4. The logistics shelf steel welding device with fume purification function according to claim 3 is characterized by: The limit assembly comprises a side fixing plate (505), a screw rod (506) and a lower pressure plate (507); the side fixing plate (505) is an L-shaped plate; the bottom end of the side fixing plate (505) is fixedly connected to the side wall of the distance adjusting block (504); the screw rod (506) is inserted and threadedly installed inside a screw hole on the upper surface of the side fixing plate (505); and the lower end of the screw rod (506) is rotatably connected to the upper end of the outer wall of the lower pressure plate (507).

5. The logistics shelf steel welding device with fume purification function according to claim 1 is characterized by: The fume purification assembly (7) comprises a fume hood (701), a fume collecting hole (702), a multi-channel fume collecting pipe (703), an air suction pump (704), a purification box (705) and an exhaust pipe (706); the fume hood (701) is arranged inside a fume hood groove on the upper surface of the welding box (1); the fume collecting hole (702) evenly penetrates the upper surface of the inner cavity of the fume hood (701); the air suction pump (704) and the purification box (705) are respectively arranged on the upper surface of the welding box (1); On the surface, the air inlet ends of the multi-channel smoke collecting pipe (703) are respectively connected to the smoke collecting holes (702), the air outlet ends of the multi-channel smoke collecting pipe (703) are connected to the air inlet of the suction pump (704), the air outlet of the suction pump (704) is connected to the air inlet of the purification box (705) through a hose, and the exhaust pipe (706) is arranged at the upper end of the outer wall of the purification box (705) and the exhaust pipe (706) is connected to the air outlet of the side wall of the purification box (705).

6. The logistics shelf steel welding device with fume purification function according to claim 5 is characterized by: An electrostatic adsorption plate (13) is provided in the middle of the inner cavity of the purification box (705), a pre-filter screen plate (12) is provided on one side of the purification box (705) close to the air inlet, and an adsorption plate (14) is provided on one end of the purification box (705) close to the exhaust pipe (706).

7. The logistics shelf steel welding device with fume purification function according to claim 6 is characterized by: The pre-filter screen plate (12) is a fine metal filter screen, the electrostatic adsorption plate (13) is an electrode plate, and the adsorption plate (14) is an activated carbon plate.

8. The logistics shelf steel welding device with fume purification function according to claim 1 is characterized by: A lower sealing block (6) is provided on the lower surface of the inner cavity of the welding box (1), and the upper surface of the lower sealing block (6) is slidably mounted in cooperation with the corners of the outer wall of the welding workbench (2).

9. The logistics shelf steel welding device with fume purification function according to claim 1 is characterized by: A door slot is provided at one end of the welding box, and a safety door (10) is rotatably mounted on the top of the door slot through a rotating shaft and is engaged with the door slot. A visual window is provided on the side wall of the safety door (10).