PCB welding device with smoke removal function

Abstract

The invention discloses a PCB welding device with a smoke removal function, and relates to the technical field of PCB welding, the welding device is used for welding a PCB, the welding device is characterized in that the welding device comprises a shell, a trapping device, a temperature adjusting device and a driving device, the shell is provided with a working cavity, the trapping device and the temperature adjusting device are arranged in the working cavity, and the driving device is arranged in the working cavity; the trapping device is communicated with the temperature adjusting device through a pipeline, the driving device is connected with the shell, and the driving device is fixedly connected with the trapping device. When the PCB of the electric vehicle is welded, the PCB is conveyed into the working cavity through the driving device, when the PCB moves to the welding station, automatic welding is conducted, smoke generated by welding is dispersed through the trapping device and automatically collected, large smoke particles are prevented from being generated in the welding space, the situation that the large particles are attached to the PCB after being cooled is avoided, and the welding quality is improved. And the temperature adjusting device is arranged to automatically cool the welding spots of the welded PCB, so that the welding quality is prevented from being influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board soldering, and specifically, it is a PCB board soldering device with a smoke removal function. Background Art

[0002] As a commonly used means of transportation, electric vehicles are widely used in short-distance rides. As the core control component of electric vehicles, the PCB board of electric vehicles has relatively high production quality requirements. The production of PCB boards mainly involves the soldering process.

[0003] When soldering a PCB board, smoke is easily generated. In the initial stage of the rise of the smoke, due to the buoyancy effect, it rises. When the flow rate is relatively fast, the smoke column will become narrower, resulting in a converging phenomenon, forming larger smoke particles. As the temperature decreases, these particles will fall on the PCB board and form tin beads. The generation of tin beads not only affects the appearance of the PCB board, but also easily causes short circuits between electrical components during the charging and discharging process, and affects the service life of electrical instruments.

[0004] In addition, during the soldering process of different areas of different sizes, the generated smoke concentration is also different. Conventional smoke removal devices cannot perform real-time detection and actively adjust the smoke removal efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a PCB board soldering device with a smoke removal function to solve the problems proposed in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: The soldering device is used for soldering a PCB board, and is characterized in that: the soldering device includes a housing, a capture device, a temperature adjustment device, and a driving device. A working chamber is provided on the housing. The capture device and the temperature adjustment device are placed in the working chamber. The capture device and the temperature adjustment device are connected by a pipeline. The driving device is connected to the housing, and the driving device is firmly connected to the capture device. The capture device is used to disperse the smoke generated during the soldering of the PCB board.

[0007] When soldering the PCB board of an electric vehicle, the PCB board is transported into the working chamber by the driving device. When it moves to the soldering station, automatic soldering is performed. By setting the capture device to disperse the smoke generated during soldering and automatically collect it, it is possible to prevent the generation of larger smoke particles in the soldering space, avoid the adhesion of large particles to the PCB board after cooling, and affect the soldering quality. By setting the temperature adjustment device to automatically cool the solder joints of the soldered PCB board, it is possible to prevent the impact on the soldering quality.

[0008] Further, the driving device includes a driving module and a soldering head. The driving module is firmly connected to the working chamber. The driving module is a cross module. The output ends of the driving module are respectively firmly connected to the soldering head and the capture device; The trapping device includes a top suction hood and a guiding component. The top suction hood and the guiding component are movably connected. The guiding component includes a guiding seat, and the guiding seat is fixedly connected to the output end of the driving module. A rotary groove is provided on the guiding seat, and the top suction hood is rotatably connected to the rotary groove. The lower end of the soldering head penetrates through the top suction hood. A number of negative pressure suction holes are provided on the top suction hood, and the inlets of the negative pressure suction holes face the solder joints of the PCB board. A drainage channel is provided on the guiding seat, and the ends of the negative pressure suction holes are connected to the drainage channel through pipes.

[0009] The driving device serves as the main power source, and provides displacements in the vertical and horizontal directions through the driving module of the cross-module structure. The module in the horizontal direction is fixedly connected to the wall surface of the working chamber, and its output end drives the module in the vertical direction to move; the output ends of the modules in the vertical direction are respectively connected to the soldering head and the trapping device, and drive the soldering head and the trapping device to move at the same time. Through a number of negative pressure suction holes on the top suction hood of the trapping device, a number of low-pressure areas are arranged near the welding points. The smoke generated by welding rises stably in a laminar flow form at low altitude, with concentrated streamlines, and the smoke particles converge into large particle particles. The drainage channel is connected to a negative pressure gas source. Through the number of low-pressure areas arranged by the negative pressure suction holes, the smoke generated by welding is under the action of the pressure difference in the low-altitude area, diffuses to the periphery, avoids the convergence of smoke, and prevents the generation of large particle particles in the welding area.

[0010] Further, the guiding component further includes a rotary motor. A transmission cavity is provided on the guiding seat, the guiding seat is placed in the transmission cavity, a transmission gear is provided at the output end of the guiding seat, and an external tooth surface is provided on the top suction hood. The output end of the guiding seat is meshed with the external tooth surface through the transmission gear.

[0011] The rotary motor is fixed through the transmission cavity. The rotary motor is used to output torque and drive the transmission gear to rotate. The transmission gear is meshed with the external tooth surface, thereby driving the top suction hood to rotate. When the top suction hood rotates, due to the negative pressure suction holes axially arranged in the inner cavity of the top suction hood, the overall inner cavity tends to be a negative pressure area. The smoke generated by welding flows directly in the circumferential direction under the action of the pressure difference, and is enriched through the negative pressure suction holes, rather than rising in a laminar state upward.

[0012] Further, the drainage channel is arranged in a ring shape. The trapping device further includes a filter, and the outlet of the drainage channel is connected to the negative pressure gas source through the filter.

[0013] The drainage channel is evacuated by the negative pressure gas source, thereby creating negative pressure in the negative pressure suction holes. When the smoke enters the ring-shaped drainage channel from the negative pressure suction holes, it is guided through the drainage channel and sent into the filter to automatically filter the impurities in the smoke, prevent the smoke from diffusing, and adhere to the PCB board, affecting the welding quality.

[0014] Further, the trapping device further includes an induction component, which includes a light-emitting plate and a mounting plate. The middle of the top suction hood is provided with a through hole. One side of the light-emitting plate and the mounting plate are respectively fixedly connected to the inner wall of the top suction hood. A photosensitive layer is provided on the side of the mounting plate away from the inner wall of the top suction hood. Two electrode plates are provided on the photosensitive layer. The light-emitting direction of the light-emitting plate faces the photosensitive layer. The two electrode plates are respectively electrically connected to the two wiring terminals of the photosensitive power supply to form a photosensitive circuit.

[0015] The light-emitting plate and the mounting plate are fixed through the through cavity of the top suction hood. The light-emitting plate is used to emit parallel light. The parallel light passes through the smoke flowing circumferentially. During the welding process, the greater the smoke concentration, the greater the optical path loss of the parallel light, that is, the smaller the light intensity irradiated on the photosensitive layer. The light irradiated on the photosensitive layer excites electron-hole pairs, making the circuit between the two electrode plates conduct and generating a photosensitive current. The smoke concentration and the magnitude of the photosensitive current are negatively correlated, that is, the greater the smoke concentration, the smaller the photosensitive current.

[0016] Further, the guiding component further includes a number of air pressing sheets, which are fixedly connected to the top suction hood. The air pressing sheets are located at the inlet of the negative pressure suction hole and are arranged obliquely. The rotary motor is electrically connected to the photosensitive circuit.

[0017] By arranging the air pressing sheets at the inlet of the negative pressure suction hole and arranging them obliquely, when the top suction hood rotates, part of the air is pressed towards the negative pressure suction hole, increasing the pressure difference and improving the radial flow efficiency of the smoke at the welding point.

[0018] Further, the temperature regulating device includes a first hot air duct. A number of air supply channels are provided on the top suction hood. The outlet of the first hot air duct is connected to the air supply channel through a pipeline. The outlets of a number of air supply channels face the welding points.

[0019] By setting the first hot air duct, the space at the welding point and the negative pressure suction hole is temperature-compensated, so that the smoke will not solidify prematurely during radial flow, avoiding affecting the quality of flue gas collection.

[0020] Further, the temperature regulating device further includes a second hot air duct and a cooling air duct. A preheating cavity and a cooling cavity are provided on the guiding seat. The second hot air duct is connected to the preheating cavity through a pipeline. The cooling air duct is connected to the cooling cavity through a pipeline. The preheating cavity and the cooling cavity are provided with downward unilateral openings.

[0021] By setting the second hot air duct, before welding, the surface of the PCB board is cleaned of impurities through the second hot air duct. An electric heating wire is built in, and at the same time, the PCB board is preheated. After the preheating is completed, welding is performed on the position to be welded. During welding, automatic smoke removal is performed. After the smoke is removed, the PCB board is sent to the lower part of the cooling cavity, and the welding point is automatically cooled through the cooling air duct, improving the welding efficiency.

[0022] Further, the driving device further includes a conveyor and a carrier plate. The conveyor is fixedly connected to the housing, and a plurality of carrier plates are provided on the conveyor for clamping the PCB board.

[0023] By arranging a conveyor to continuously convey the PCB board, which is fixed to the housing and passes through the working chamber, a chain plate mechanism can be adopted. Carrier plates are arranged on the conveying chain, and the PCB board is clamped by the carrier plates, thereby ensuring the welding accuracy.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: Through a plurality of negative pressure suction holes on the top suction hood, a plurality of low-pressure areas are arranged near the welding point. The smoke generated by welding rises stably in a laminar flow form at a low altitude, with concentrated streamlines, and the smoke particles converge into large particle particles. The drainage channel is connected to a negative pressure air source. Through the plurality of low-pressure areas arranged by the negative pressure suction holes, the smoke generated by welding is under the action of the pressure difference in the low-altitude area and diffuses to the surrounding, avoiding the convergence of smoke and preventing the generation of large particle particles in the welding area; When the top suction hood rotates, due to the negative pressure suction holes axially arranged in the inner cavity of the top suction hood, the overall inner cavity tends to be a negative pressure area. The smoke generated by welding is under the action of the pressure difference and directly flows circumferentially, and is enriched through the negative pressure suction holes, rather than flowing upward in a laminar state; By arranging a pressure air sheet at the inlet of the negative pressure suction hole and arranging it obliquely, when the top suction hood rotates, part of the air is pressed towards the negative pressure suction hole, increasing the pressure difference and improving the radial flow efficiency of the smoke at the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the driving device of the present invention; Figure 3 is a schematic diagram of the driving of the welding head of the present invention; Figure 4 is a schematic diagram of the structure of the guiding component of the present invention; Figure 5 is a schematic diagram of the structure of the top suction hood of the present invention; Figure 6 is a schematic diagram of the structure of the guiding seat of the present invention; Figure 7 is Figure 3 an enlarged view of a partial view A of the view; Figure 8 is a schematic diagram of the conveying of the PCB board of the present invention.

[0026] In the figure: 1. Housing; 11. Working chamber; 2. Trapping device; 21. Top suction hood; 211. Negative pressure suction hole; 212. Outer tooth surface; 213. Supplementary air duct; 22. Guide assembly; 221. Guide seat; 2211. Preheating chamber; 2212. Cooling chamber; 2213. Rotary groove; 2214. Drainage channel; 2215. Transmission chamber; 222. Rotary motor; 223. Compression piece; 23. Induction assembly; 231. Light-emitting plate; 232. Mounting plate; 233. Photosensitive layer; 234. Electrode plate; 24. Filter; 3. Temperature control device; 31. First hot air duct; 32. Second hot air duct; 33. Cooling air duct; 4. Driving device; 41. Driving module; 42. Welding head; 43. Conveyor; 44. Carrier plate. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment: As Figures 1 - 8 shown, the present invention provides a technical solution for a PCB board welding device with a smoke removal function.

[0029] The welding device is used for welding a PCB board, and is characterized in that: the welding device includes a housing 1, a trapping device 2, a temperature control device 3 and a driving device 4. A working chamber 11 is provided on the housing 1. The trapping device 2 and the temperature control device 3 are placed in the working chamber 11. The trapping device 2 and the temperature control device 3 are connected by a pipeline. The driving device 4 is connected to the housing 1, and the driving device 4 is firmly connected to the trapping device 2. The trapping device 2 is used for dispersing the smoke generated by welding the PCB board.

[0030] When welding the PCB board of an electric vehicle, the PCB board is conveyed into the working chamber 11 by the driving device 4. When it moves to the welding station, automatic welding is carried out. By setting the trapping device 2 to disperse the smoke generated by welding and automatically collecting it, it is prevented from generating large smoke particles in the welding space, and it is avoided that the large particles adhere to the PCB board after cooling, affecting the welding quality. By setting the temperature control device 3, the solder joints of the welded PCB board are automatically cooled to prevent affecting the welding quality.

[0031] Further, the driving device 4 includes a driving module 41 and a welding head 42. The driving module 41 is firmly connected to the working chamber 11. The driving module 41 is a cross module. The output ends of the driving module 41 are respectively firmly connected to the welding head 42 and the trapping device 2; The capture device 2 includes a top suction hood 21 and a guiding component 22. The top suction hood 21 and the guiding component 22 are movably connected. The guiding component 22 includes a guiding base 221. The guiding base 221 is fixedly connected to the output end of the driving module 41. A rotary groove 2213 is provided on the guiding base 221. The top suction hood 21 is rotationally connected to the rotary groove 2213. The lower end of the soldering head 42 penetrates through the top suction hood 21. A number of negative pressure suction holes 211 are provided on the top suction hood 21. The inlets of the negative pressure suction holes 211 face the solder joints of the PCB board. A drainage channel 2214 is provided on the guiding base 221. The ends of the negative pressure suction holes 211 are connected to the drainage channel 2214 through pipes.

[0032] The driving device 4 serves as the main power source and provides displacements in the vertical and horizontal directions through the driving module 41 of the cross-module structure. The horizontal module is fixedly connected to the wall surface of the working chamber 11, and the output end drives the vertical module to move; the output ends of the vertical modules are respectively connected to the soldering head 42 and the capture device 2, and simultaneously drive the soldering head 42 and the capture device 2 to move. The capture device 2 arranges a number of low-pressure areas near the welding points through a number of negative pressure suction holes 211 on the top suction hood 21. The smoke generated by welding rises stably in a laminar flow form at low altitude, with concentrated streamlines. The smoke particles converge into large particle particles. The drainage channel 2214 is connected to a negative pressure gas source. Through the number of low-pressure areas arranged by the negative pressure suction holes 211, the smoke generated by welding is under the action of a pressure difference in the low-altitude area and diffuses to the surrounding, avoiding the convergence of smoke and preventing the generation of large particle particles in the welding area.

[0033] Further, the guiding component 22 further includes a rotary motor 222. A transmission cavity 2215 is provided on the guiding base 221. The guiding base 221 is placed in the transmission cavity 2215. A transmission gear is provided at the output end of the guiding base 221. An external tooth surface 212 is provided on the top suction hood 21. The output end of the guiding base 221 is meshed with the external tooth surface 212 through the transmission gear.

[0034] The rotary motor 222 is fixed through the transmission cavity 2215. The rotary motor 222 is used to output torque and drive the transmission gear to rotate. The transmission gear is meshed with the external tooth surface 212, thereby driving the top suction hood 21 to rotate. When the top suction hood 21 rotates, due to the negative pressure suction holes 211 axially arranged in the inner cavity of the top suction hood 21, the overall inner cavity tends to be a negative pressure area. The smoke generated by welding flows directly in the circumferential direction under the action of a pressure difference and is concentrated through the negative pressure suction holes 211, rather than flowing upward in a laminar state.

[0035] Further, the drainage channel 2214 is arranged in a ring shape. The capture device 2 further includes a filter 24. The outlet of the drainage channel 2214 is connected to the negative pressure gas source through the filter 24.

[0036] Air is pumped out of the drainage channel 2214 through a negative pressure air source, thereby creating a negative pressure in the negative pressure suction holes 211. When the smoke enters the annular drainage channel 2214 from the negative pressure suction holes 211, it is diverted through the drainage channel 2214 and sent into the filter 24 to automatically filter the impurities in the smoke, prevent the smoke from diffusing, and adhere to the PCB board, affecting the welding quality.

[0037] Further, the trapping device 2 further includes an induction component 23. The induction component 23 includes a light-emitting plate 231 and a mounting plate 232. The middle of the top suction hood 21 is provided with a through hole. One side of the light-emitting plate 231 and the mounting plate 232 are respectively fixedly connected to the inner wall of the top suction hood 21. A photosensitive layer 233 is provided on the side of the mounting plate 232 away from the inner wall of the top suction hood 21. Two electrode plates 234 are provided on the photosensitive layer 233. The light-emitting direction of the light-emitting plate 231 faces the photosensitive layer 233. The two electrode plates 234 are respectively electrically connected to the two wiring terminals of the photosensitive power supply to form a photosensitive circuit.

[0038] The light-emitting plate 231 and the mounting plate 232 are fixed through the through cavity of the top suction hood 21. The light-emitting plate 231 is used to emit parallel light. The parallel light passes through the smoke flowing circumferentially. During the welding process, the greater the smoke concentration, the greater the optical path loss of the parallel light, that is, the smaller the light intensity irradiated on the photosensitive layer 233. The light irradiated on the photosensitive layer 233 excites electron-hole pairs, making the circuit between the two electrode plates 234 conduct, and generating a photosensitive current. The smoke concentration and the magnitude of the photosensitive current are negatively correlated, that is, the greater the smoke concentration, the smaller the photosensitive current.

[0039] Further, the guiding component 22 further includes a number of air compression sheets 223. The air compression sheets 223 are fixedly connected to the top suction hood 21. The air compression sheets 223 are located at the inlet of the negative pressure suction holes 211. The air compression sheets 223 are arranged obliquely. The rotary motor 222 is electrically connected to the photosensitive circuit.

[0040] By arranging the air compression sheets 223 at the inlet of the negative pressure suction holes 211 and arranging them obliquely, when the top suction hood 21 rotates, part of the air is pressed towards the negative pressure suction holes 211, and by increasing the pressure difference, the radial flow efficiency of the smoke at the welding point is improved.

[0041] Further, the temperature adjustment device 3 includes a first hot air duct 31. A number of air supply channels 213 are provided on the top suction hood 21. The outlet of the first hot air duct 31 is connected to the air supply channels 213 through pipes. The outlets of the number of air supply channels 213 face the welding points.

[0042] By setting the first hot air duct 31, the space at the welding points and the negative pressure suction holes 211 is temperature-compensated, so that the smoke will not solidify prematurely during the radial flow, avoiding affecting the smoke collection quality.

[0043] Further, the temperature control device 3 further includes a second hot air duct 32 and a cooling air duct 33. A preheating chamber 2211 and a cooling chamber 2212 are provided on the guiding seat 221. The second hot air duct 32 is in pipeline communication with the preheating chamber 2211, and the cooling air duct 33 is in pipeline communication with the cooling chamber 2212. The preheating chamber 2211 and the cooling chamber 2212 are provided with downward single-sided openings.

[0044] By providing the second hot air duct 32, before welding, impurities on the surface of the PCB board are cleaned through the second hot air duct 32, and an electric heating wire is built in. At the same time, the PCB board is preheated. After the preheating is completed, welding is performed on the position to be welded. During welding, automatic smoke removal is carried out. After the smoke is removed, the PCB board is sent to directly below the cooling chamber 2212, and the soldering point is automatically cooled through the cooling air duct 33, improving the welding efficiency.

[0045] Further, the driving device 4 further includes a conveyor 43 and a carrier plate 44. The conveyor 43 is fixedly connected to the housing 1. A number of carrier plates 44 are provided on the conveyor 43, and the carrier plates 44 are used for clamping the PCB board.

[0046] By providing the conveyor 43 to continuously convey the PCB board, it is fixed to the housing 1 and passes through the working chamber 11. A chain plate mechanism can be adopted, and the carrier plate 44 is arranged on the conveying chain. The PCB board is clamped through the carrier plate 44, thereby ensuring the welding accuracy.

[0047] The working principle of the present invention: The capture device 2 arranges a number of low-pressure areas near the welding point through a number of negative pressure suction holes 211 on the top suction hood 21. The smoke generated by welding steadily rises in a laminar flow form at low altitude, with concentrated streamlines, and the smoke particles converge into large particle particles. The diversion channel 2214 is connected to a negative pressure air source. Through the number of low-pressure areas arranged by the negative pressure suction holes 211, the smoke generated by welding is under the action of the pressure difference in the low-altitude area and diffuses to the surrounding, avoiding the convergence of smoke and preventing the generation of large particle particles in the welding area; when the top suction hood 21 rotates, due to the negative pressure suction holes 211 axially arranged in the inner cavity of the top suction hood 21, the overall inner cavity tends to be a negative pressure area. The smoke generated by welding is under the action of the pressure difference and directly flows circumferentially, and is enriched through the negative pressure suction holes 211, rather than flowing upward in a laminar state; by arranging a pressure air sheet 223 at the inlet of the negative pressure suction hole 211 and arranging it obliquely, when the top suction hood 21 rotates, part of the air is pressed towards the negative pressure suction hole 211, and by increasing the pressure difference, the radial flow efficiency of the smoke at the welding place is improved.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A PCB board soldering device with a smoke removal function, the soldering device is used for soldering a PCB board, and is characterized in that: The welding device includes a housing (1), a trapping device (2), a temperature regulating device (3), and a driving device (4). A working chamber (11) is provided on the housing (1). The trapping device (2) and the temperature regulating device (3) are placed inside the working chamber (11). The trapping device (2) and the temperature regulating device (3) are connected by pipes. The driving device (4) is connected to the housing (1), and the driving device (4) is fixedly connected to the trapping device (2). The trapping device (2) is used to disperse the smoke generated by welding the PCB board. The trapping device (2) includes a top suction hood (21) and a guiding component (22). The guiding component (22) includes a guiding seat (221). The guiding component (22) further includes a rotary motor (222). A transmission cavity (2215) is provided on the guiding seat (221). The guiding seat (221) is placed inside the transmission cavity (2215). A transmission gear is provided at the output end of the guiding seat (221). An external tooth surface (212) is provided on the top suction hood (21). The output end of the guiding seat (221) is meshed with the external tooth surface (212) through the transmission gear.

2. The PCB board soldering device with a smoke removal function according to claim 1, characterized in that: The driving device (4) includes a driving module (41) and a welding head (42). The driving module (41) is fixedly connected to the working chamber (11). The driving module (41) is a cross module. The output ends of the driving module (41) are respectively fixedly connected to the welding head (42) and the trapping device (2). The top suction hood (21) is movably connected to the guiding component (22). The guiding seat (221) is fixedly connected to the output end of the driving module (41). A rotary groove (2213) is provided on the guiding seat (221). The top suction hood (21) is rotationally connected to the rotary groove (2213). The lower end of the welding head (42) penetrates through the top suction hood (21). A number of negative pressure suction holes (211) are provided on the top suction hood (21). The inlet of the negative pressure suction holes (211) faces the solder joints of the PCB board. A drainage channel (2214) is provided on the guiding seat (221). The ends of the negative pressure suction holes (211) are connected to the drainage channel (2214) by pipes.

3. The PCB board soldering device with a smoke removal function according to claim 2, characterized in that: The drainage channel (2214) is arranged in a ring shape. The trapping device (2) further includes a filter (24). The outlet of the drainage channel (2214) is connected to a negative pressure air source through the filter (24).

4. The PCB board soldering device with a smoke removal function according to claim 3, characterized in that: The trapping device (2) further includes an induction component (23). The induction component (23) includes a light emitting plate (231) and a mounting plate (232). The middle of the top suction hood (21) is provided with a through hole. One side of the light emitting plate (231) and the mounting plate (232) are respectively fixedly connected to the inner wall of the top suction hood (21). A photosensitive layer (233) is provided on the side of the mounting plate (232) away from the inner wall of the top suction hood (21). Two electrode plates (234) are provided on the photosensitive layer (233). The light emitting direction of the light emitting plate (231) faces the photosensitive layer (233). The two electrode plates (234) are respectively electrically connected to the two wiring terminals of a photosensitive power supply to form a photosensitive circuit.

5. The PCB board soldering device with a smoke removal function according to claim 4, characterized in that: The guiding component (22) further includes a number of air compression sheets (223), the air compression sheets (223) are fixedly connected to the top suction hood (21), the air compression sheets (223) are located at the inlet of the negative pressure suction holes (211), the air compression sheets (223) are arranged obliquely, and the rotary motor (222) is electrically connected to the photosensitive circuit.

6. The PCB board soldering device with a smoke removal function according to claim 5, characterized in that: The temperature regulating device (3) includes a first hot air duct (31), a number of air supply channels (213) are provided on the top suction hood (21), the outlet of the first hot air duct (31) is in pipeline communication with the air supply channels (213), and the outlets of a number of the air supply channels (213) are oriented towards the solder joints.

7. The PCB board soldering device with a smoke removal function according to claim 6, characterized in that: The temperature regulating device (3) further includes a second hot air duct (32) and a cooling air duct (33), a preheating chamber (2211) and a cooling chamber (2212) are provided on the guiding seat (221), the second hot air duct (32) is in pipeline communication with the preheating chamber (2211), the cooling air duct (33) is in pipeline communication with the cooling chamber (2212), and the preheating chamber (2211) and the cooling chamber (2212) are provided with downward single-side openings.

8. The PCB board soldering device with a smoke removal function according to claim 7, characterized in that: The driving device (4) further includes a conveyor (43) and a carrier plate (44), the conveyor (43) is fixedly connected to the housing (1), a number of carrier plates (44) are provided on the conveyor (43), and the carrier plates (44) are used for clamping the PCB boards.

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