A soldering device for processing a circuit board

Abstract

The application discloses a kind of welding devices for circuit board processing, including workbench, workbench is fixedly provided with portal frame, controller is fixedly provided on the side surface of portal frame, welding assembly for welding circuit board is provided on portal frame, feeding mechanism for feeding to be processed circuit board is provided on workbench, guide assembly for guiding load-bearing frame is provided in concave frame, rotating rod is rotatably arranged in load-bearing frame, cleaning brush is fixedly provided on rotating rod, power motor is fixedly provided on the side surface of load-bearing frame, wind power assembly is provided on load-bearing frame;The welding device for circuit board processing is conveniently cleaned on the surface of circuit board by the cleaning brush and power motor, thereby effectively improving the welding effect, the electric push rod drives load-bearing frame to lift, so that the cleaning brush is attached to the circuit board, the power motor drives the cleaning brush to rotate in a circle, and cooperates with the feeding mechanism to convey the circuit board, completes the overall cleaning of board surface, and can effectively remove dust and sundries at the pad.

Description

Technical Field

[0001] This invention relates to the field of circuit board welding technology, specifically to a welding device for circuit board processing. Background Technology

[0002] The soldering equipment for circuit board processing uses molten solder wave soldering to firmly bond the solder to the circuit board pads and component leads, achieving electrical connection and mechanical fixation between components and the circuit board. On the one hand, the equipment relies on the solidification of solder to achieve circuit conduction, and on the other hand, it uses solder to fix components and delay copper foil oxidation. Through precise temperature control, it improves the heating environment and reduces PCB warping, delamination, cold solder joints, short circuits, and other defects, thus completing the assembly and processing of circuit board components.

[0003] Chinese patent CN119282302A discloses a component soldering device for circuit board processing, including a wire feeding assembly and a flux coating assembly. The flux coating assembly includes a support plate connected to a base frame, a turntable rotating on the support plate, a torsion spring connecting the turntable and the support plate, a nozzle connected to the eccentric part of the turntable, and an abutment rod located below a lifting beam connected to one side of the turntable. The wire feeding assembly includes a telescopic rod connected to the lifting beam, and a guide tube located between the soldering iron and the nozzle at the movable end of the telescopic rod. Before the soldering iron moves down to prepare for soldering, the nozzle is pre-positioned and sprays flux onto the solder pads of the circuit board and between the pins of the components, while the guide tube feeds the solder wire between the soldering iron and the nozzle. Then, when the soldering iron moves down to solder, the nozzle can be automatically and synchronously retracted, and the guide tube can drive the solder wire into position.

[0004] Existing circuit board welding equipment lacks a specific structure for cleaning the circuit boards to be welded during welding operations. Dust particles and residual debris adhere to the surface of the circuit boards, and these impurities become trapped at the interface between the solder and the pads during the welding process, which can easily lead to poor solder joints and reduce the quality of the welded circuit. This limits the applicability of existing equipment.

[0005] Therefore, the present invention provides a welding apparatus for circuit board processing. Summary of the Invention

[0006] The purpose of this invention is to provide a welding apparatus for circuit board processing to solve the problems mentioned in the background art.

[0007] A welding device for circuit board processing includes a worktable, a gantry frame fixedly mounted on the worktable, a controller fixedly mounted on the side of the gantry frame, welding components for welding circuit boards mounted on the gantry frame, a feeding mechanism for loading circuit boards to be processed onto the worktable, a concave frame fixedly mounted on the worktable, an electric push rod fixedly mounted on the concave frame, a load-bearing frame inside the concave frame, with the telescopic end of the electric push rod fixedly connected to the load-bearing frame, a guide component for guiding the load-bearing frame inside the concave frame, a rotating rod rotatably mounted inside the load-bearing frame, a cleaning brush fixedly mounted on the rotating rod, a power motor fixedly mounted on the side of the load-bearing frame, with the telescopic end of the power motor fixedly connected to the end of the rotating rod, a wind-powered component mounted on the load-bearing frame, an exhaust component for cleaning the circuit boards mounted on the load-bearing frame, and a purification mechanism for purifying welding fumes mounted on the concave frame.

[0008] By adopting the above scheme, when soldering circuit boards, the circuit board to be processed is placed on the loading mechanism manually or by a robotic arm. The loading mechanism moves to load the circuit board, moving it to the processing location. Then, the soldering assembly moves to perform wire soldering. Before soldering, the surface of the circuit board to be soldered needs to be cleaned. The loading mechanism clamps the circuit board and adjusts its position. Based on the circuit board's vertical position, the electric push rod moves the support frame. The guide assembly ensures smooth movement of the support frame. During the frame's movement, the position of the cleaning brush can be adjusted by rotating the rod, allowing the bottom of the brush to contact the circuit board surface. The cleaning brush is flexible and deformable, which in turn controls the motor to rotate the rod. The rotation of the rod causes the cleaning brush to move in a circular motion, thoroughly cleaning the circuit board surface. This achieves the goal of cleaning the circuit board, removing dust and debris from the solder pads and preventing impurities from causing cold solder joints, false solder joints, and short circuits caused by solder bridging. The system ensures the flux fully contacts the copper foil, improving solder wetting and resulting in strong, aesthetically pleasing solder joints. It also reduces the amount of resin dust that carbonizes at high temperatures and adheres to the soldering iron tip, slowing down tip oxidation and wear. Furthermore, it allows for the detection of defects such as copper foil damage during cleaning, improving soldering quality. The rotating rod drives the fan assembly, generating airflow that enters the exhaust assembly. The exhaust assembly directs the airflow downwards, further cleaning the circuit board surface. Simultaneously, it activates the purification mechanism, which can... It effectively absorbs and purifies the fumes generated during welding, thus avoiding any impact on the surrounding environment. After the circuit board welding is completed, when the circuit board is reset by the feeding mechanism, the exhaust component circulates air, which cools the welded area. The cleaning brush is detachable and replaceable. When the air mechanism is not needed, the drive belt can be removed. When the circuit board is unloaded by the feeding mechanism, the cleaning brush can remove any abnormal solder dross or solder spots caused by spatter during the welding process.

[0009] Furthermore, the feeding mechanism includes a guide rail, a guide block, a support plate, a threaded rod, and a servo motor. The guide rail is symmetrically fixed on the worktable, the guide block is engaged on the guide rail, the support plate is fixed on the guide block, the threaded rod is rotatably mounted on the worktable, and the outer surface of the threaded rod is threadedly connected to the inside of the support plate. The servo motor is fixed on the top of the worktable, and the output end of the servo motor is fixedly connected to one end of the threaded rod. A telescopic corrugated tube is sleeved on the threaded rod, and the end of the telescopic corrugated tube is fixedly connected to the side of the support plate.

[0010] By adopting the above solution, after the circuit board is placed and fixed on the carrier plate, the servo motor will drive the threaded rod to rotate. When the threaded rod rotates, it will adjust the position of the carrier plate. When the carrier plate moves, it can move smoothly through the cooperation of the guide rail and guide block. In this way, the carrier plate can drive the circuit board to move smoothly for loading.

[0011] Furthermore, the bearing plate is provided with three sets of sliding grooves in an array, and a guide rod is fixedly installed in the corresponding sliding groove. A bidirectional lead screw is rotatably installed in the sliding groove. Clamping plates are symmetrically arranged on the bearing plate, and the outer surface of the bidirectional lead screw is threadedly connected to the inside of the clamping plate. The guide rod passes through the clamping plate. A stepper motor is fixedly installed on the side of the bearing plate, and the output end of the stepper motor is fixedly connected to the end of the bidirectional lead screw.

[0012] By adopting the above solution, after the circuit board is placed on the support plate, when the circuit board is clamped and limited, the stepper motor is controlled to drive the bidirectional lead screw to rotate. The bidirectional lead screw has two opposite threads. The rotation of the bidirectional lead screw will drive the two sets of clamping plates to move in opposite directions. After the clamping plates move to one side of the circuit board, the circuit board can be fixed and limited. Thus, when the circuit board is soldered, the circuit board can be effectively prevented from shaking accidentally, which would affect the soldering effect.

[0013] Furthermore, the welding assembly includes a linear motor, a support plate, a positioning plate, a solder wire welding head, and an adjustment assembly. The linear motor is mounted on the gantry frame, the support plate is fixed to the linear motor, the positioning plate is mounted on the side of the support plate, the adjustment assembly for adjusting the position of the positioning plate is mounted on the support plate, and the solder wire welding head is fixed to the positioning plate.

[0014] By adopting the above scheme, after the circuit board to be processed and soldered is fed to the processing location by the feeding mechanism, the position of the positioning plate can be adjusted by the adjustment component. The movement of the positioning plate will drive the solder wire welding head to move. After the solder wire welding head moves to the solder point, the solder wire welding head can perform soldering processing on the surface of the circuit board.

[0015] Furthermore, the adjustment assembly includes a drive motor, a strip groove, a threaded screw, and a guide rod. The drive motor is fixed to the top of the support plate. The strip groove array is arranged inside the support plate. The threaded screw is rotatably arranged in the corresponding strip groove, and the outer surface of the threaded screw is threadedly connected to the inside of the positioning plate. The guide rod passes through the inside of the positioning plate, and the end of the guide rod is fixedly connected to the inner wall of the strip groove.

[0016] By adopting the above scheme, the drive motor will drive the threaded screw to rotate. When the threaded screw rotates, the position of the positioning plate can be adjusted. When the positioning plate moves, the guide rod can guide the positioning plate to move smoothly, which facilitates the adjustment of the position of the solder wire welding head.

[0017] Furthermore, the guiding assembly includes a guide cylinder and a guide shaft. The guide cylinder is fixed on the load-bearing frame, the guide shaft passes through the inside of the guide cylinder, and one end of the guide shaft is fixedly connected to the concave frame. Drive wheels are symmetrically fixed on the rotating rod.

[0018] By adopting the above scheme, when the position of the load-bearing frame is adjusted, the guide cylinder will move. The guide cylinder, in cooperation with the guide shaft, will guide the load-bearing frame, so that the load-bearing frame moves smoothly. When the rotating rod rotates, it will drive the drive wheel to rotate.

[0019] Furthermore, the wind power component includes a protective box, a fan, an extraction pipe, and an air supply pipe. The protective box is installed inside the load-bearing frame, the fan is fixed inside the protective box, one end of the extraction pipe is connected to the input end of the fan, and one end of the air supply pipe is connected to the output end of the fan.

[0020] By adopting the above scheme, the drive wheel is rotated by rotating the rod, and the drive wheel will drive the fan to move. The fan moves and delivers airflow. The airflow is delivered through the air supply pipe, and the air can be extracted through the air extraction pipe.

[0021] Furthermore, the wind power component also includes a drive shaft and a driven wheel. The drive shaft is rotatably mounted inside the protective box, and one end of the drive shaft is connected to the impeller inside the wind turbine. The driven wheel is fixed on the drive shaft, and the driven wheel is connected to the corresponding drive wheel via a belt drive.

[0022] By adopting the above scheme, when the rotating rod rotates and drives the drive wheel to rotate, the driven wheel and drive shaft will drive the fan to move and deliver wind power.

[0023] Furthermore, the exhaust assembly includes an air duct and nozzles. The air duct is embedded inside the concave frame, and the other end of the air supply pipe is connected to the air duct. The nozzle array is arranged on the air duct, and the air duct is located on one side of the load-bearing frame.

[0024] By adopting the above scheme, when the fan moves, it will deliver airflow. After the airflow enters the air duct through the air supply pipe, the airflow will flow outward through the nozzle, which can clean the circuit board and also be used to cool down the soldered circuit board.

[0025] Furthermore, the purification mechanism includes a purification box, an air inlet, a conical groove, a slot, an adsorption plate, and a sealing plate. The purification box is fixed on a concave frame, the conical groove is fixed inside the purification box, and the other end of the exhaust pipe is connected to the corresponding conical groove. The air inlet array is arranged on the purification box, the slot is arranged inside the purification box, the adsorption plate is engaged inside the slot, the sealing plate is engaged inside the purification box, and the side of the sealing plate is fixedly connected to the adsorption plate. The adsorption plate is located above the conical groove.

[0026] By adopting the above scheme, when the fan is in operation, the air inside the purification box is drawn in through the air extraction pipe and the conical groove. This causes the air inlet to generate suction, and the outside air carries the fumes generated during welding to the air inlet. After the fumes flow into the purification box, they flow through the adsorption plate. The adsorption plate can filter and intercept floating particles, thereby achieving the purpose of purifying the flue gas and effectively avoiding the impact on the surrounding environment. In addition, the sealing plate is detachable, and the adsorption plate can be moved out of the purification box by pulling the sealing plate, so that the adsorption plate can be cleaned or replaced.

[0027] Compared with the prior art, the beneficial effects of the present invention are: 1. The welding device for circuit board processing described in this invention facilitates the cleaning of the circuit board surface through a cleaning brush and a power motor, thereby effectively improving the welding effect. Based on the vertical position of the circuit board, an electric push rod drives the support frame to rise and fall. The guide cylinder and guide shaft cooperate to ensure the smooth movement of the support frame. The height of the cleaning brush can be adjusted by a rotating rod, allowing the cleaning brush to fit the circuit board. The power motor drives the cleaning brush to rotate circumferentially, and in conjunction with the feeding mechanism, the circuit board is conveyed, completing a comprehensive cleaning of the board surface. This effectively removes dust and debris from the solder pads, preventing cold solder joints, false solder joints, and pin short circuits. It promotes full contact between the flux and copper foil, optimizes the solder wetting effect, reduces resin dust carbonization adhesion, reduces soldering iron tip wear, and can also detect copper foil damage defects in advance, effectively improving the quality of the welded product.

[0028] 2. The welding device for circuit board processing described in this invention facilitates further cleaning of the circuit board through the provided fan and air duct. The rotating rod drives the drive wheel to rotate, which in turn drives the fan through the driven wheel and drive shaft. The airflow is introduced into the air duct through the air supply pipe and sprayed downward from the nozzle. The high-speed airflow sweeps the surface of the circuit board, achieving secondary dust removal and purification. During the unloading and conveying of the circuit board after welding, the cleaning brush moves simultaneously to scrape off excess solder dross and solder dots that are not fused with the solder pads caused by the splashing of molten solder during welding. The dual cleaning method removes dust and free solder beads from the board surface, further reducing the risk of short circuits.

[0029] 3. The welding device for circuit board processing described in this invention facilitates the filtration and interception of floating matter through the purification box and adsorption plate, and can purify the welding area. During the operation of the fan, air is drawn from the inside of the purification box through the exhaust pipe and the conical groove, creating a negative pressure suction at the air inlet. The fumes generated by the welding operation, carrying suspended particulate matter, are drawn into the purification box through the air inlet. When the fumes pass through the adsorption plate, the floating impurities are intercepted and filtered by the adsorption plate, thereby purifying the welding fumes and preventing welding waste gas from polluting the surrounding environment. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the overall structure of the welding device for circuit board processing according to the present invention; Figure 2 This is a three-dimensional structural diagram of the support plate of the present invention; Figure 3 This is a three-dimensional structural diagram of the positioning plate and support plate of the present invention; Figure 4 This is a three-dimensional structural diagram of the concave frame of the present invention; Figure 5 This is a three-dimensional structural diagram of the load-bearing frame of the present invention; Figure 6 This is a schematic diagram of the structure of the protective box of the present invention; Figure 7 This is a three-dimensional structural diagram of the air duct and concave frame of the present invention; Figure 8 This is a schematic diagram of the purification box and adsorption plate of the present invention.

[0031] In the diagram: 1. Workbench; 2. Guide rail; 3. Guide block; 4. Bearing plate; 5. Threaded rod; 6. Telescopic bellows; 7. Servo motor; 8. Slide rail; 9. Guide rod; 10. Bidirectional lead screw; 11. Clamping plate; 12. Stepper motor; 13. Gantry frame; 14. Controller; 15. Linear motor; 16. Support plate; 17. Drive motor; 18. Strip groove; 19. Threaded lead screw; 20. Guide rod; 21. Positioning plate; 22. Solder wire soldering head; 23. 24. Concave frame; 25. Electric push rod; 26. Load-bearing frame; 27. Guide cylinder; 28. Guide shaft; 29. ​​Rotating rod; 20. Drive wheel; 30. Cleaning brush; 31. Power motor; 32. Protective box; 33. Drive shaft; 34. Driven wheel; 35. Fan; 36. Exhaust pipe; 37. Air supply pipe; 38. Air duct; 39. Spray hole; 40. Purification box; 41. Air inlet; 42. Conical groove; 43. Slot; 44. Adsorption plate; 45. Sealing plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-8This invention provides a technical solution: a welding device for circuit board processing, including a worktable 1, a gantry frame 13 fixedly mounted on the worktable 1, a controller 14 fixedly mounted on the side of the gantry frame 13, welding components for welding circuit boards mounted on the gantry frame 13, a feeding mechanism for loading circuit boards to be processed onto the worktable 1, a concave frame 23 fixedly mounted on the worktable 1, an electric push rod 24 fixedly mounted on the concave frame 23, a load-bearing frame 25 disposed inside the concave frame 23, and the telescopic end of the electric push rod 24... The concave frame 23 is fixedly connected to the load-bearing frame 25 and is equipped with a guide component for guiding the load-bearing frame 25. A rotating rod 28 is rotatably installed inside the load-bearing frame 25, and a cleaning brush 30 is fixedly installed on the rotating rod 28. A power motor 31 is fixedly installed on the side of the load-bearing frame 25, and the telescopic end of the power motor 31 is fixedly connected to the end of the rotating rod 28. A wind-powered component is installed on the load-bearing frame 25, and an exhaust component for cleaning the circuit board is installed on the load-bearing frame 25. A purification mechanism for purifying welding fumes is installed on the concave frame 23.

[0034] The controller 14 is electrically connected to the electronic equipment on the welding device for circuit board processing, and can control the operation of the welding device for circuit board processing. When using a soldering device for circuit board processing to solder circuit boards, the circuit board to be processed is placed on the feeding mechanism manually or by means of a robotic arm. The feeding mechanism moves to feed the circuit board and moves it to the processing location. Then, the soldering components move to perform soldering on the circuit board. Before soldering the circuit board, the surface of the circuit board to be soldered needs to be cleaned. After the circuit board to be soldered is fixed and clamped by the feeding mechanism, the position of the circuit board is adjusted. According to the vertical position of the circuit board, the operation of the electric push rod 24 will push the support frame 25 to move. The guide component can make the support frame 25 move smoothly. When the support frame 25 moves, the position of the cleaning brush 30 can be adjusted by the rotating rod 28 so that the bottom of the cleaning brush 30 can contact the surface of the circuit board. The cleaning brush 30 can be flexibly deformed, which in turn controls the operation of the power motor 31 to drive the rotating rod 28 to rotate. When the rotating rod 28 rotates, it drives the cleaning brush 30 to move in a circle. When the cleaning brush 30 moves, it can thoroughly clean the surface of the circuit board, achieving the purpose of cleaning the circuit board. It can remove dust and debris from the surface of the solder pads, avoid impurities causing problems such as cold solder joints, false solder joints, and short circuits caused by solder bridging, and ensure that the flux fully contacts the copper foil, improves the solder wetting effect, and makes the solder joints firm and beautiful, while reducing resin dust and high temperature carbon The cleaning brush 30 adheres to the soldering iron tip, slowing down oxidation and wear. It also helps detect defects such as copper foil damage during cleaning, improving soldering quality. When the rotating rod 28 moves, it drives the fan assembly, which generates airflow into the exhaust assembly. The exhaust assembly causes the airflow to flow downwards, further cleaning the circuit board surface. Simultaneously, it activates the purification mechanism, effectively absorbing and purifying the fumes generated during soldering, thus preventing environmental impact. After soldering, when the circuit board is reset by the feeding mechanism, the exhaust assembly generates airflow, cooling the solder joints. The cleaning brush 30 is detachable and replaceable; when the fan assembly is not needed, simply remove the drive belt. When the circuit board is unloaded by the feeding mechanism, the cleaning brush 30 removes any incomplete solder dross or solder spots caused by soldering spatter.

[0035] Furthermore, the feeding mechanism includes a guide rail 2, a guide block 3, a bearing plate 4, a threaded rod 5, and a servo motor 7. The guide rail 2 is symmetrically fixed on the worktable 1. The guide block 3 is engaged on the guide rail 2. The bearing plate 4 is fixed on the guide block 3. The threaded rod 5 is rotatably mounted on the worktable 1, and the outer surface of the threaded rod 5 is threadedly connected to the inside of the bearing plate 4. The servo motor 7 is fixed on the top of the worktable 1, and the output end of the servo motor 7 is fixedly connected to one end of the threaded rod 5. A telescopic corrugated tube 6 is sleeved on the threaded rod 5, and the end of the telescopic corrugated tube 6 is fixedly connected to the side of the bearing plate 4. When the circuit board is loaded and processed, after the circuit board is placed on the support plate 4 and fixed, the servo motor 7 is controlled to drive the threaded rod 5 to rotate. When the threaded rod 5 rotates, it will adjust the position of the support plate 4. When the support plate 4 moves, it can move smoothly through the cooperation of the guide rail 2 and the guide block 3. In this way, the support plate 4 can drive the circuit board to move smoothly for loading. The telescopic corrugated tube 6 can be extended and retracted, and the threaded rod 5 can be protected by the telescopic corrugated tube 6. The lead screws used in the welding equipment for circuit board processing are all equipped with bellows to protect the surface of the lead screw and prevent external factors from affecting it.

[0036] Furthermore, the bearing plate 4 is provided with three sets of sliding grooves 8 in an array, and a guide rod 9 is fixedly provided in the corresponding sliding groove 8. A bidirectional lead screw 10 is rotatably provided in the sliding groove 8. A clamping plate 11 is symmetrically provided on the bearing plate 4, and the outer surface of the bidirectional lead screw 10 is threadedly connected to the inside of the clamping plate 11. The guide rod 9 passes through the clamping plate 11. A stepper motor 12 is fixedly provided on the side of the bearing plate 4, and the output end of the stepper motor 12 is fixedly connected to the end of the bidirectional lead screw 10. After the circuit board is placed on the support plate 4, when the circuit board is clamped and limited, the stepper motor 12 is controlled to drive the bidirectional lead screw 10 to rotate. The bidirectional lead screw 10 has two opposite threads. The rotation of the bidirectional lead screw 10 will drive the two sets of clamping plates 11 to move in opposite directions. After the clamping plates 11 move to one side of the circuit board, the circuit board can be fixed and limited. In this way, when the circuit board is soldered, the circuit board can be effectively prevented from shaking accidentally, which would affect the soldering effect.

[0037] Furthermore, the welding assembly includes a linear motor 15, a support plate 16, a positioning plate 21, a solder wire welding head 22, and an adjustment assembly. The linear motor 15 is mounted on the gantry frame 13, the support plate 16 is fixed on the linear motor 15, the positioning plate 21 is mounted on the side of the support plate 16, the adjustment assembly for adjusting the position of the positioning plate 21 is mounted on the support plate 16, and the solder wire welding head 22 is fixed on the positioning plate 21. After the circuit board to be soldered is fed to the processing location by the feeding mechanism, the position of the positioning plate 21 can be adjusted by the adjustment component. The movement of the positioning plate 21 will drive the solder wire soldering head 22 to move. After the solder wire soldering head 22 moves to the solder point, the solder wire soldering head 22 can perform soldering processing on the surface of the circuit board (existing technology).

[0038] Furthermore, the adjustment assembly includes a drive motor 17, a strip groove 18, a threaded screw 19, and a guide rod 20. The drive motor 17 is fixed to the top of the support plate 16. The strip grooves 18 are arranged in an array inside the support plate 16. The threaded screw 19 is rotatably arranged in the corresponding strip groove 18, and the outer surface of the threaded screw 19 is threadedly connected to the inside of the positioning plate 21. The guide rod 20 passes through the inside of the positioning plate 21, and the end of the guide rod 20 is fixedly connected to the inner wall of the strip groove 18. The control drive motor 17 drives the threaded screw 19 to rotate. When the threaded screw 19 rotates, the position of the positioning plate 21 can be adjusted. When the positioning plate 21 moves, the guide rod 20 can guide the positioning plate 21 to move smoothly, which facilitates the adjustment of the position of the solder wire welding head 22.

[0039] Furthermore, the guide assembly includes a guide cylinder 26 and a guide shaft 27. The guide cylinder 26 is fixed on the load-bearing frame 25, and the guide shaft 27 passes through the inside of the guide cylinder 26. One end of the guide shaft 27 is fixedly connected to the concave frame 23, and drive wheels 29 are symmetrically fixed on the rotating rod 28. When the position of the load-bearing frame 25 is adjusted, the guide cylinder 26 will move. The guide cylinder 26, in cooperation with the guide shaft 27, will guide the load-bearing frame 25, so that the load-bearing frame 25 moves smoothly. When the rotating rod 28 rotates, it will drive the drive wheel 29 to rotate.

[0040] Furthermore, the wind power component includes a protective box 32, a fan 35, an exhaust pipe 36, and an air supply pipe 37. The protective box 32 is installed inside the load-bearing frame 25, the fan 35 is fixed inside the protective box 32, one end of the exhaust pipe 36 is connected to the input end of the fan 35, and one end of the air supply pipe 37 is connected to the output end of the fan 35. The drive wheel 29 is rotated by rotating rod 28. When the drive wheel 29 rotates, it drives the fan 35 to move. The fan 35 moves to deliver airflow. The airflow is delivered through air pipe 37 and air can be extracted through air extraction pipe 36.

[0041] Furthermore, the wind power assembly also includes a drive shaft 33 and a driven wheel 34. The drive shaft 33 is rotatably mounted inside the protective box 32, and one end of the drive shaft 33 is connected to the impeller inside the wind turbine 35 via a transmission drive. The driven wheel 34 is fixed on the drive shaft 33, and the driven wheel 34 is connected to the corresponding drive wheel 29 via a belt drive. When the rotating rod 28 rotates and drives the drive wheel 29 to rotate, the driven wheel 34 and the drive shaft 33 will drive the fan 35 to move and deliver wind power.

[0042] Furthermore, the exhaust assembly includes an air duct 38 and nozzles 39. The air duct 38 is embedded inside the concave frame 23, and the other end of the air supply pipe 37 is connected to the air duct 38. The nozzle array 39 is arranged on the air duct 38, and the air duct 38 is located on one side of the load-bearing frame 25. When the fan 35 moves, it will deliver airflow. After the airflow enters the air duct 38 through the air supply pipe 37, the airflow will flow outward through the nozzle 39, which can clean the circuit board and also cool down the soldered circuit board.

[0043] Furthermore, the purification mechanism includes a purification box 40, an air inlet 41, a conical groove 42, a slot 43, an adsorption plate 44, and a sealing plate 45. The purification box 40 is fixed on the concave frame 23, the conical groove 42 is fixed inside the purification box 40, and the other end of the exhaust pipe 36 is connected to the corresponding conical groove 42. The air inlet 41 is arrayed on the purification box 40, the slot 43 is set inside the purification box 40, the adsorption plate 44 is engaged inside the slot 43, the sealing plate 45 is engaged inside the purification box 40, and the side of the sealing plate 45 is fixedly connected to the adsorption plate 44. The adsorption plate 44 is located above the conical groove 42. When the fan 35 is in motion, the air inside the purification box 40 is drawn in through the exhaust pipe 36 and the conical groove 42, which in turn causes the air inlet 41 to generate suction. The outside air carries the fumes generated during welding to the air inlet 41. After the fumes flow into the purification box 40, they flow through the adsorption plate 44. The adsorption plate 44 can filter and intercept floating particles, thereby achieving the purpose of purifying the flue gas and effectively avoiding the impact on the surrounding environment. In addition, the sealing plate 45 is detachable. The adsorption plate 44 can be moved out of the purification box 40 by pulling the sealing plate 45, so that the adsorption plate 44 can be cleaned or replaced.

[0044] Working principle: First, when welding circuit boards using a welding device, the circuit board to be processed is placed on the carrier plate 4 manually or by a robotic arm. Then, the stepper motor 12 drives the bidirectional lead screw 10 to rotate. The bidirectional lead screw 10 has two opposite threads. The rotation of the bidirectional lead screw 10 drives two sets of clamping plates 11 to move in opposite directions. After the clamping plates 11 move to one side of the circuit board, they can fix and limit the circuit board. The servo motor 7 drives the threaded rod 5 to rotate. The rotation of the threaded rod 5 adjusts the position of the carrier plate 4. When the carrier plate 4 moves, it moves smoothly through the cooperation of the guide rail 2 and the guide block 3. This allows the carrier plate 4 to smoothly move the circuit board for loading, moving the circuit board to the processing position. After positioning, the drive motor 17 drives the threaded screw 19 to rotate. The rotation of the threaded screw 19 adjusts the position of the positioning plate 21. The positioning plate 21 is guided by the guide rod 20, ensuring smooth movement and facilitating the adjustment of the position of the solder wire bonding head 22. Once the solder wire bonding head 22 reaches the solder point, it can perform soldering on the circuit board surface. Before soldering the circuit board, the surface needs to be cleaned. The feeding mechanism clamps the circuit board and adjusts its position. Based on the circuit board's vertical position, the electric push rod 24 moves the support frame 25. Adjusting the position of the support frame 25 drives the guide cylinder 26. The guide cylinder 26, in conjunction with the guide shaft 27, guides the load-bearing frame 25, ensuring its smooth movement. During movement, the position of the cleaning brush 30 can be adjusted via the rotating rod 28, allowing its bottom to contact the circuit board surface. The cleaning brush 30 is flexible and deformable, which in turn controls the power motor 31 to rotate the rotating rod 28. This rotation causes the cleaning brush 30 to move in a circular motion. The movement of the cleaning brush 30, along with the movement of the feeding mechanism, moves the circuit board, providing a comprehensive cleaning of the circuit board surface. This achieves the goal of cleaning the circuit board, removing dust and debris from the solder pads, preventing issues such as cold solder joints, false solder joints, and short circuits caused by impurities. It also ensures that the flux fully contacts the copper foil, improving solder wetting. This system ensures strong and aesthetically pleasing solder joints while reducing the accumulation of resin dust and carbonization on the soldering iron tip, slowing down tip oxidation and wear. It also helps detect defects such as copper foil damage during cleaning, improving soldering quality. When the rotating rod 28 rotates, it drives the drive wheel 29, which in turn drives the fan 35 via the driven wheel 34 and drive shaft 33. The fan delivers air through the air pipe 37 into the air duct 38, where it flows outwards and downwards through the nozzle 39. This downward airflow further cleans the circuit board surface. Simultaneously, the fan 35, through the suction pipe 36 and conical groove 42, draws air from the purification chamber 40, creating suction at the air inlet 41. Outside air carries the soldering fumes towards the air inlet 41.After the smoke flows into the purification chamber 40, it passes through the adsorption plate 44, which filters and intercepts floating particulate matter, thereby achieving the purpose of purifying the smoke and effectively preventing its impact on the surrounding environment. Simultaneously, after the circuit board soldering is completed, when the circuit board is unloaded by the feeding mechanism, the cleaning brush 30 moves to remove any abnormal solder dross or solder joints caused by spatter during the soldering process.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for circuit board processing, characterized in that: Includes a workbench (1), on which a gantry frame (13) is fixedly installed, and a controller (14) is fixedly installed on the side of the gantry frame (13). A welding assembly for welding circuit boards is installed on the gantry frame (13), and a feeding mechanism for feeding circuit boards to be processed is installed on the workbench (1). A concave frame (23) is fixedly installed on the workbench (1). An electric push rod (24) is fixedly installed on the concave frame (23). A load-bearing frame (25) is installed inside the concave frame (23). The telescopic end of the electric push rod (24) is fixedly connected to the load-bearing frame (25). A guide component for guiding the load-bearing frame (25) is installed inside the concave frame (23). A rotating rod (28) is rotatably installed inside the load-bearing frame (25). A cleaning brush (30) is fixedly installed on the rotating rod (28). A power motor (31) is fixedly installed on the side of the load-bearing frame (25). The telescopic end of the power motor (31) is fixedly connected to the end of the rotating rod (28). The load-bearing frame (25) is equipped with a wind-powered component, the load-bearing frame (25) is equipped with an exhaust component for cleaning the circuit board, and the concave frame (23) is equipped with a purification mechanism for purifying welding fumes.

2. The welding device for circuit board processing according to claim 1, characterized in that: The feeding mechanism includes a guide rail (2), a guide block (3), a bearing plate (4), a threaded rod (5), and a servo motor (7). The guide rail (2) is symmetrically fixed on the worktable (1). The guide block (3) is engaged on the guide rail (2). The bearing plate (4) is fixed on the guide block (3). The threaded rod (5) is rotatably mounted on the worktable (1), and the outer surface of the threaded rod (5) is threadedly connected to the inside of the bearing plate (4). The servo motor (7) is fixed on the top of the worktable (1), and the output end of the servo motor (7) is fixedly connected to one end of the threaded rod (5). A telescopic corrugated tube (6) is sleeved on the threaded rod (5), and the end of the telescopic corrugated tube (6) is fixedly connected to the side of the bearing plate (4).

3. The welding device for circuit board processing according to claim 2, characterized in that: The bearing plate (4) is provided with three sets of sliding grooves (8) arranged in an array. A guide rod (9) is fixedly arranged in the corresponding sliding groove (8). A bidirectional lead screw (10) is rotatably arranged in the sliding groove (8). A clamping plate (11) is symmetrically arranged on the bearing plate (4). The outer surface of the bidirectional lead screw (10) is threadedly connected to the inside of the clamping plate (11). The guide rod (9) passes through the clamping plate (11). A stepper motor (12) is fixedly arranged on the side of the bearing plate (4). The output end of the stepper motor (12) is fixedly connected to the end of the bidirectional lead screw (10).

4. The welding device for circuit board processing according to claim 3, characterized in that: The welding assembly includes a linear motor (15), a support plate (16), a positioning plate (21), a solder wire welding head (22), and an adjustment assembly. The linear motor (15) is mounted on the gantry (13), the support plate (16) is fixed on the linear motor (15), the positioning plate (21) is mounted on the side of the support plate (16), the adjustment assembly for adjusting the position of the positioning plate (21) is mounted on the support plate (16), and the solder wire welding head (22) is fixed on the positioning plate (21).

5. The welding device for circuit board processing according to claim 4, characterized in that: The adjustment assembly includes a drive motor (17), a strip groove (18), a threaded screw (19), and a guide rod (20). The drive motor (17) is fixed on the top of the support plate (16). The strip grooves (18) are arranged in an array inside the support plate (16). The threaded screw (19) is rotatably arranged in the corresponding strip groove (18), and the outer surface of the threaded screw (19) is threadedly connected to the inside of the positioning plate (21). The guide rod (20) passes through the inside of the positioning plate (21), and the end of the guide rod (20) is fixedly connected to the inner wall of the strip groove (18).

6. The welding apparatus for circuit board processing according to claim 1, characterized in that: The guide assembly includes a guide cylinder (26) and a guide shaft (27). The guide cylinder (26) is fixed on the load-bearing frame (25). The guide shaft (27) passes through the inside of the guide cylinder (26), and one end of the guide shaft (27) is fixedly connected to the concave frame (23). The rotating rod (28) is symmetrically fixed with drive wheels (29).

7. The welding apparatus for circuit board processing according to claim 6, characterized in that: The wind power component includes a protective box (32), a fan (35), an exhaust pipe (36), and an air supply pipe (37). The protective box (32) is installed inside the load-bearing frame (25). The fan (35) is fixed inside the protective box (32). One end of the exhaust pipe (36) is connected to the input end of the fan (35), and one end of the air supply pipe (37) is connected to the output end of the fan (35).

8. The welding apparatus for circuit board processing according to claim 7, characterized in that: The wind power assembly also includes a drive shaft (33) and a driven wheel (34). The drive shaft (33) is rotatably mounted inside the protective box (32), and one end of the drive shaft (33) is connected to the impeller inside the fan (35) via a transmission. The driven wheel (34) is fixed on the drive shaft (33), and the driven wheel (34) is connected to the corresponding drive wheel (29) via a belt drive.

9. A welding device for circuit board processing according to claim 8, characterized in that: The exhaust assembly includes a duct (38) and nozzles (39). The duct (38) is embedded inside the concave frame (23), and the other end of the air supply pipe (37) is connected to the duct (38). The nozzles (39) are arranged in an array on the duct (38), and the duct (38) is located on one side of the load-bearing frame (25).

10. A welding apparatus for circuit board processing according to claim 1, characterized in that: The purification mechanism includes a purification box (40), an air inlet (41), a conical groove (42), a slot (43), an adsorption plate (44), and a sealing plate (45). The purification box (40) is fixed on a concave frame (23). The conical groove (42) is fixed inside the purification box (40), and the other end of the exhaust pipe (36) is connected to the corresponding conical groove (42). The air inlets (41) are arranged in an array on the purification box (40). The slot (43) is arranged inside the purification box (40). The adsorption plate (44) is engaged inside the slot (43). The sealing plate (45) is engaged inside the purification box (40), and the side of the sealing plate (45) is fixedly connected to the adsorption plate (44). The adsorption plate (44) is located above the conical groove (42).

Images