Common mode inductance automatic winding welding equipment and welding process thereof

Abstract

The present application belongs to the technical field of common mode inductance automatic winding welding equipment, and particularly relates to a common mode inductance automatic winding welding equipment and a welding process thereof, which comprises an automatic winding welding machine, a conveyor, a welding pool, a driving module and a clamping module installed on the automatic winding welding machine, a magnetic core with a winding coil is clamped on the clamping module, and the winding coil has a protruding wire end; the present application further comprises a gas feeding mechanism, which comprises a connecting seat fixedly installed on the clamping module, and a micro electric push rod is fixedly installed on the connecting seat; by integrating the liftable gas feeding mechanism on the clamping module, the welding area can be timely blown by fixed-point hot air when the wire end just completes welding and the flux and solder are still in a high-temperature non-solidified state, so that the complete volatilization and solidification of the residual flux are effectively accelerated, and a hygroscopic corrosion layer is avoided to be formed subsequently.

Description

Technical Field

[0001] This invention relates to the technical field of automatic winding and welding equipment for common mode inductors, specifically to an automatic winding and welding equipment for common mode inductors and its welding process. Background Technology

[0002] The common-mode inductor automatic winding and soldering equipment is an automated production line that integrates winding and soldering processes. Its core task is to precisely wind enameled copper wire (winding coil) onto a dark green toroidal magnetic core, forming two sets of coils with a specific number of turns and opposite directions. After winding, the equipment sequentially dips the two ends of the coils in flux to clean the surface, then immerses them in molten solder. This wet soldering process establishes a strong electrical connection between the wire ends and the metal leads, producing a finished product ready for direct circuit board mounting. This integrated design solves the industry pain points of difficult toroidal core winding and inconsistent quality of manual soldering.

[0003] After the winding coil ends on the magnetic core are soldered with liquid tin, the traditional practice is to directly place them on a conveyor belt or other equipment to be sent to the next stage. However, since the flux remaining on the surface of the wire ends after soldering is still active at high temperatures and has not been fully cured, and the solder joints may have irregular solder tips or excess solder, directly sending them away can easily lead to the formation of a hygroscopic corrosion layer after the residue cools down, the solder tips piercing the adjacent insulation layer and causing a short circuit risk, or the solder joints having an uneven appearance, affecting the accuracy of subsequent electrical testing. Therefore, to address the above problems, an automatic winding and soldering equipment for common mode inductors and its soldering process are proposed. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes an automatic winding and welding equipment for common mode inductors and its welding process.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: An automatic winding and welding equipment for common-mode inductors, comprising an automatic winding and welding machine, and a conveyor, welding pool, drive module, and clamping module installed on the automatic winding and welding machine. The clamping module clamps a magnetic core with a winding coil, and the winding coil has protruding wire ends. It also includes an air supply mechanism, comprising a connecting seat fixedly installed on the clamping module. A miniature electric actuator is fixedly installed on the connecting seat. A hollow frame is fixedly installed at the output end of the miniature electric actuator. One side of the hollow frame has several air outlet holes communicating with the interior. Several connecting plates with through slots are fixedly installed on one side of both the miniature electric actuator and the hollow frame. An air supply pipe communicating with the interior is fixedly installed at one end of the hollow frame. The air supply pipe passes through the through slot of the connecting plate and is connected to an external air pump.

[0006] Furthermore, a protective mechanism is provided between the miniature electric actuator and the hollow frame. The protective mechanism includes a first multi-stage protective tube and a second multi-stage protective tube fixedly installed between the miniature electric actuator and the hollow frame. Both the first and second multi-stage protective tubes are composed of several semi-circular hollow tubes, which are slidably connected to each other. The semi-circular tubes of the first multi-stage protective tube are slidably connected to each other in a sealed manner, and are connected to each other through round holes. An air inlet pipe with a one-way valve and connected to the interior is fixedly installed on one side of the first multi-stage protective tube, and an air outlet pipe with a one-way valve is fixedly installed on the other side of the first multi-stage protective tube. A hollow rectangular frame is fixedly installed at one end of the air outlet pipe, and several connecting holes connected to the interior are opened on one side of the rectangular frame.

[0007] Furthermore, a number of arc-shaped baffles are fixedly installed on one side of the rectangular frame, and a number of rectangular slots penetrating through the baffles are provided on the baffles.

[0008] Furthermore, the connecting seat is provided with an air storage component, which includes an air storage box fixedly installed on the connecting seat. An air injection pipe with a one-way valve is fixedly installed on the top of the air storage box, and a connecting pipe connected to the air inlet pipe is fixedly installed on one side of the air storage box.

[0009] Furthermore, a wiping mechanism is provided inside the hollow frame. The wiping mechanism includes a sliding groove opened inside the hollow frame. A sliding rod is slidably connected to the sliding groove by an elastic rope. An electromagnet is fixed to one end of the sliding rod, and an electromagnetic block is installed inside the sliding groove. A rectangular plate is fixedly installed to the other end of the sliding rod, and a brush is installed on the rectangular plate.

[0010] Furthermore, a cleaning mechanism is provided on the second multi-stage protective pipe. The cleaning mechanism includes a circular pipe with a one-way valve that is connected to the inside of the second multi-stage protective pipe. A connecting pipe with a one-way valve is fixedly installed on the second multi-stage protective pipe. Several semi-circular pipes of the second multi-stage protective pipe are mutually sealed and slidably connected, and the several semi-circular pipes are connected to each other through circular holes. One end of the connecting pipe is connected to the inclined cavity inside the hollow frame.

[0011] Furthermore, a sliding plate with a connecting rope is slidably connected to the cavity, and an arc-shaped fixing plate is fixedly installed at one end of the sliding plate. A crossbar is fixedly installed on the fixing plate, and several connecting balls are fixedly installed on the surface of the crossbar.

[0012] Furthermore, a guide component is provided on the hollow frame. The guide component includes a guide block that is fixedly connected to the hollow frame and has one side that is arc-shaped. A guide post is rotatably connected to the arc-shaped surface of the guide block.

[0013] Furthermore, the connecting plate is wedge-shaped with several rolling balls that communicate with the through slots.

[0014] A welding process for automatic winding and welding of common mode inductors, the process using the aforementioned automatic winding and welding equipment for common mode inductors, the process includes the following steps:

[0015] S1: By activating the miniature electric actuator on the connector, the output end of the miniature electric actuator moves downward along with the hollow frame and the air supply pipe, and the air pump connected to the air supply pipe is activated simultaneously, so that hot air is sprayed onto the connector through the air supply pipe, the hollow frame and several air outlets.

[0016] S2: When the miniature electric actuator moves, the first multi-stage protective tube moves along with it and draws in gas. When the miniature electric actuator resets, the gas in the first multi-stage protective tube is blown to the surface of the weld through the connecting hole.

[0017] S3: Simultaneously energize the electromagnet and electromagnet block in the slide, causing the slide rod to move towards the joint along with the electromagnet, elastic rope, rectangular plate and brush, and use the brush to clean the joint.

[0018] The advantages of this invention are:

[0019] 1. This invention integrates a liftable air delivery mechanism into the clamping module, enabling targeted hot air blowing on the welding area immediately after welding, while the flux and solder are still in a high-temperature, uncured state. This effectively accelerates the complete evaporation and curing of residual flux, preventing the formation of a hygroscopic corrosion layer. Simultaneously, the physical impact of the hot air smooths irregular solder tips and excess solder, eliminating the risk of short circuits caused by tip discharge piercing the insulation layer, ensuring a smooth and rounded solder joint appearance, and significantly improving the pass rate of subsequent electrical tests. Furthermore, the through-slots and ball bearing structure on the connecting plate provide stable guidance and friction reduction for the air delivery pipe, ensuring precise and repeatable positioning of the hot air jet and reducing pipe friction loss during long-term reciprocating motion. This makes the entire air blowing action stable and reliable without affecting the normal cycle of subsequent conveying processes.

[0020] 2. This invention achieves dynamic sealing protection of the output end of the electric actuator by linking the extension and retraction of the miniature electric actuator with the intake and exhaust of the first multi-stage protective tube. This effectively prevents flux or solder balls from contaminating and corroding the electric actuator during welding, significantly extending its service life. Simultaneously, after each air blowing action, the first multi-stage protective tube precisely guides the previously drawn-in nitrogen gas through the rectangular frame and arc-shaped baffle to the surface of the welding pool. The nitrogen gas isolates the air, providing continuous antioxidant protection for the high-temperature liquid solder, significantly reducing solder dross and improving subsequent welding quality. The arc-shaped baffle guides the airflow to cover both the far and near ends of the circuit and effectively blocks external impurities from entering the connecting holes, ensuring long-term unobstructed airflow. The overall structure requires no additional air source; it achieves the dual functions of "protecting the electric actuator" and "protecting the molten solder" solely through the device's own operation, combining energy saving and reliability.

[0021] 3. This invention integrates a reciprocating brush that physically brushes the wire ends after hot air blowing, further removing residual flux carbides and tiny solder beads, significantly improving solder joint cleanliness and insulation reliability. Simultaneously, the air pressure generated by the device's own movement drives a self-cleaning mechanism to vibrate and clean the brush with air, ensuring long-term cleanliness and preventing secondary contamination. The guide component assists in the smooth repositioning of the sliding plate. This completes a closed-loop process of "air blowing, brushing, and self-cleaning," requiring no additional power source. This ensures consistent cleanliness for every soldered wire end while significantly reducing the frequency of brush maintenance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the welding pool in this invention;

[0025] Figure 3 This is a schematic diagram of the structure of the clamping module in this invention;

[0026] Figure 4 This is a schematic diagram of the structure at the winding coil in this invention;

[0027] Figure 5 This is a front view structural diagram of the hollow frame in this invention;

[0028] Figure 6 This is a cross-sectional view of the hollow frame in this invention;

[0029] Figure 7 This is a schematic diagram of the structure at the connecting plate in this invention;

[0030] Figure 8 This is a schematic diagram of the structure at the rectangular frame in this invention;

[0031] Figure 9 In this invention Figure 3 A schematic diagram of the structure at point A;

[0032] Figure 10 In this invention Figure 6 A schematic diagram of the structure at point B;

[0033] Figure 11 In this invention Figure 8 Schematic diagram of the structure at point C

[0034] Figure 12 This is a schematic diagram of the process in this invention.

[0035] In the diagram: 1. Automatic winding and welding machine; 2. Conveyor; 3. Welding pool; 4. Drive module; 5. Clamping module; 6. Winding coil; 7. Wire end;

[0036] 10. Air supply mechanism; 11. Connecting seat; 12. Miniature electric actuator; 13. Hollow frame; 14. Air outlet; 15. Connecting plate; 16. Through slot; 17. Air supply pipe;

[0037] 20. Protective mechanism; 21. First multi-stage protective pipe; 22. Second multi-stage protective pipe; 23. Inlet pipe; 24. Outlet pipe; 25. Rectangular frame; 26. Connecting hole; 27. Baffle; 28. Rectangular groove;

[0038] 29. Gas storage assembly; 291. Gas storage box; 292. Gas injection pipe; 293. Connecting pipe;

[0039] 30. Wiping mechanism; 31. Slide groove; 32. Slide rod; 33. Electromagnet; 34. Electromagnetic block; 35. Elastic rope; 36. Rectangular plate; 37. Brush;

[0040] 40. Cleaning mechanism; 41. Round tube; 42. Connecting tube; 43. Cavity; 44. Sliding plate; 45. Fixing plate; 46. Connecting rope; 47. Crossbar; 48. Connecting ball;

[0041] 49. Guide assembly; 491. Guide block; 492. Guide post;

[0042] 50. Rolling ball. Detailed Implementation

[0043] 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.

[0044] Please see Figure 1-11 As shown, an automatic winding and welding equipment for common mode inductors includes an automatic winding and welding machine 1, and a conveyor 2, a welding pool 3, a drive module 4, and a clamping module 5 installed on the automatic winding and welding machine 1. The clamping module 5 clamps a magnetic core with a winding coil 6, and the winding coil 6 has a protruding wire end 7. It also includes an air supply mechanism 10, including a connecting seat 11 fixedly installed on the clamping module 5. A miniature electric push rod 12 is fixedly installed on the connecting seat 11. A hollow frame 13 is fixedly installed at the output end of the miniature electric push rod 12. One side of the hollow frame 13 has several air outlets 14 that communicate with the interior. Several connecting plates 15 with through slots 16 are fixedly installed on one side of both the miniature electric push rod 12 and the hollow frame 13. An air supply pipe 17 that communicates with the interior is fixedly installed at one end of the hollow frame 13. The air supply pipe 17 passes through the through slot 16 of the connecting plate 15 and is connected to an external air pump. The connecting plate 15 has several rolling balls 50 that are connected to the through slot 16.

[0045] During operation, after the magnetic core is wound with the winding coil 6, the joint of the winding coil 6 will protrude. At this time, the drive module 4 on the automatic winding and welding machine 1 moves the clamping module 5, which clamps the magnetic core and moves it to the welding pool 3 filled with liquid tin for welding. After the clamping module 5 completes the welding task on the joint of the magnetic winding coil 6, it will lift up, causing the joint to leave the welding pool 3. At this time, the micro electric actuator 12 on the connecting seat 11 is activated, and the output end of the micro electric actuator 12 moves the hollow frame 13 and the air supply pipe 17 downward. Simultaneously, the air pump connected to the air supply pipe 17 is activated, so that hot air is delivered to the hollow frame 13 through the air supply pipe 17 and sprayed onto the joint through several air outlets 14 in the hollow frame 13. By setting the connecting plate 15 and the through slot 16, the air supply pipe 17 can move along a stable path in conjunction with the hollow frame 13, and the rolling ball 50 can reduce friction, facilitating the movement of the air supply pipe 17 within the through slot 16, thereby reducing frictional loss of the air supply pipe 17. After the air blowing operation is completed, the miniature electric actuator 12 moves the hollow frame 13 upward through its output end, thus not affecting the subsequent placement of the magnetic core onto the conveyor 2 for further processing.

[0046] By integrating a liftable air delivery mechanism 10 into the clamping module 5, hot air can be blown onto the welding area immediately after welding is completed, while the flux and solder are still in a high-temperature, uncured state. This effectively accelerates the complete evaporation and curing of residual flux, preventing the formation of a hygroscopic corrosion layer. Simultaneously, the physical impact of the hot air smooths irregular solder tips and excess solder, eliminating the risk of short circuits caused by tip discharge piercing the insulation layer. This ensures a smooth and rounded solder joint appearance, significantly improving the pass rate of subsequent electrical tests. Furthermore, the through-slot 16 and ball bearing 50 structure on the connecting plate 15 provide stable guidance and friction reduction for the air delivery pipe 17. This ensures precise and repeatable positioning of the hot air jet and reduces pipe friction loss during long-term reciprocating motion, making the entire air blowing action stable and reliable without affecting the normal cycle time of subsequent conveying processes.

[0047] A protective mechanism 20 is provided between the miniature electric actuator 12 and the hollow frame 13. The protective mechanism 20 includes a first multi-stage protective tube 21 and a second multi-stage protective tube 22 fixedly installed between the miniature electric actuator 12 and the hollow frame 13. Both the first multi-stage protective tube 21 and the second multi-stage protective tube 22 are composed of several semi-circular hollow tubes, and the several semi-circular tubes are slidably connected to each other. The several semi-circular tubes of the first multi-stage protective tube 21 are slidably connected to each other in a sealed manner, and the several semi-circular tubes are connected to each other through round holes. An air inlet pipe 23 with a one-way valve and connected to the interior is fixedly installed on one side of the first multi-stage protective tube 21. An air outlet pipe 24 with a one-way valve is fixedly installed on one side of the first multi-stage protective tube 21. A hollow rectangular frame 25 is fixedly installed at one end of the air outlet pipe 24. Several connecting holes 26 connected to the interior are opened on one side of the rectangular frame 25.

[0048] Specifically, a number of arc-shaped baffles 27 are fixedly installed on one side of the rectangular frame 25, and a number of rectangular slots 28 are opened on the baffles 27. An air storage assembly 29 is provided on the connecting seat 11. The air storage assembly 29 includes an air storage box 291 fixedly installed on the connecting seat 11. An air injection pipe 292 with a one-way valve is fixedly installed on the top of the air storage box 291, and a connecting pipe 293 connected to the air inlet pipe 23 is fixedly installed on one side of the air storage box 291.

[0049] During operation, as the miniature electric actuator 12 moves downwards with the hollow frame 13, the first multi-stage protective tube 21 and the second multi-stage protective tube 22 work together to stretch the hollow frame 13, thus protecting the output end of the miniature electric actuator 12. When the first multi-stage protective tube 21 is stretched with the hollow frame 13, it draws gas (nitrogen, but can be replaced as needed) from the gas storage box 291 into the first multi-stage protective tube 21 through the air inlet pipe 23 and the connecting pipe 293, filling the several semi-circular hollow tubes of the first multi-stage protective tube 21 through several round holes. When the miniature electric actuator 12 returns to its original position with the hollow frame 13, the first multi-stage protective tube 21 and the second multi-stage protective tube 22 also retract. At this time, the first multi-stage protective tube 21 injects the internal gas into the rectangular frame 25 through the air outlet pipe 24, and blows it out through several connecting holes 26 of the rectangular frame 25 onto the surface of the welding pool 3. Because an arc-shaped baffle 27 is installed at the connecting hole 26, some gas is directly sprayed through the through groove 16 of the baffle 27 towards the far end of the surface of the welding pool 3, while the other part of the gas is directly guided by the baffle 27 to the surface of the welding joint. The arc-shaped baffle 27 also serves to prevent impurities from entering the connecting hole 26. Furthermore, each time it is used, the first multi-stage protective tube 21 will draw in some gas from the gas storage box 291 to perform a blowing operation on the used liquid tin. When the gas in the gas storage box 291 is depleted, it can be replenished through the gas injection pipe 292.

[0050] By linking the extension and retraction of the miniature electric actuator 12 with the intake and exhaust of the first multi-stage protective tube 21, a follow-up sealing protection is achieved for the output end of the electric actuator, effectively preventing flux or solder balls from splashing and contaminating or corroding the electric actuator during the welding process, thus significantly extending its service life. Simultaneously, after each air blowing action, the first multi-stage protective tube 21 precisely guides the previously drawn-in nitrogen through the rectangular frame 25 and the arc-shaped baffle 27 to the surface of the welding pool 3. The nitrogen isolates the air, providing continuous antioxidant protection for the high-temperature liquid solder, significantly reducing solder dross and improving subsequent welding quality. The arc-shaped baffle 27 guides the airflow to cover both the far and near ends of the welding process and effectively blocks external impurities from entering the connecting hole 26, ensuring long-term unobstructed airflow. The overall structure requires no additional air source; it achieves the dual functions of "protecting the electric actuator" and "protecting the molten solder" solely through the device's own operation, combining energy saving and reliability.

[0051] A wiping mechanism 30 is provided inside the hollow frame 13. The wiping mechanism 30 includes a slide groove 31 opened inside the hollow frame 13. A slide rod 32 is slidably connected to the slide groove 31 by an elastic rope 35. An electromagnet 33 is fixed at one end of the slide rod 32, and an electromagnet block 34 is installed in the slide groove 31. A rectangular plate 36 is fixedly installed at the other end of the slide rod 32, and a brush 37 is installed on the rectangular plate 36.

[0052] Specifically, a cleaning mechanism 40 is provided on the second multi-stage protective pipe 22. The cleaning mechanism 40 includes a circular pipe 41 with a one-way valve that is connected to the inside of the second multi-stage protective pipe 22. A connecting pipe 42 with a one-way valve is fixedly installed on the second multi-stage protective pipe 22. Several semi-circular pipes of the second multi-stage protective pipe 22 are mutually sealed and slidably connected, and the several semi-circular pipes are connected to each other through circular holes. One end of the connecting pipe 42 is connected to the inclined cavity 43 inside the hollow frame 13. A sliding plate 44 with a connecting rope 46 is sealed and slidably connected inside the cavity 43. An arc-shaped fixing plate 45 is fixedly installed on one end of the sliding plate 44. A crossbar 47 is fixedly installed on the fixing plate 45, and several connecting balls 48 are fixedly installed on the surface of the crossbar 47.

[0053] Specifically, a guide component 49 is provided on the hollow frame 13. The guide component 49 includes a guide block 491 that is fixedly connected to the hollow frame 13 and has one side that is arc-shaped. A guide post 492 is rotatably connected to the arc-shaped surface of the guide block 491.

[0054] During operation, after the hollow frame 13 completes the blowing of hot air, the electromagnet 33 and electromagnetic block 34 in the slide groove 31 are simultaneously energized. This causes the slide rod 32 to move the electromagnet 33, elastic rope 35, rectangular plate 36, and brush 37 towards the joint, where the brush 37 cleans the joint. As the miniature electric push rod 12 moves the components upwards, the electromagnet 33 and electromagnetic block 34 are de-energized. At this time, the slide rod 32 and brush 37, along with other components, will reset under the action of the elastic rope 35 for subsequent use. Previously, the downward movement of the hollow frame 13 stretched the second multi-stage protective tube 22, drawing gas into it through the round tube 41. As the micro electric actuator 12 moves the hollow frame 13 upwards and resets, the gas in the second multi-stage protective tube 22 enters the cavity 43 through the connecting tube 42, pushing the sliding plate 44 and other components such as the fixing plate 45 within the cavity 43 to move. This causes the sliding plate 44 to leave the cavity 43, allowing the fixing plate 45, crossbar 47, and several connecting balls 48 to be inserted into the brush 37. These components then vibrate to shake off impurities from the brush 37. Since the sliding plate 44 no longer seals the cavity 43, subsequent gas continues to blow onto the brush 37, achieving air cleaning of the brush 37. When the gas stops being ejected, the connecting rope 46 slides the sliding plate 44 and other components into the cavity 43 to reset. At the same time, the arc-shaped surface of the guide block 491 and several guide posts 492 assist the sliding plate 44 in resetting.

[0055] By integrating a reciprocating brush 37, the wire ends 7 are physically brushed after being blown with hot air, which can further remove residual flux carbides and tiny solder beads, significantly improving the cleanliness and insulation reliability of the solder joints. At the same time, the self-cleaning mechanism is driven by the air pressure generated by the movement of the equipment to vibrate and shake the brush 37 and clean it with air, ensuring that the brush 37 remains clean for a long time and avoiding secondary contamination. The guide component 49 can assist the sliding plate 44 to return to its original position smoothly. The whole process realizes a closed-loop treatment of "air blowing, brushing, and self-cleaning" without the need for an additional power source. This not only ensures a consistent cleanliness effect for each soldered wire end 7, but also greatly reduces the maintenance frequency of the brush 37.

[0056] like Figure 12 As shown, an automatic wire-winding and welding process for common-mode inductors is described. This process uses the aforementioned automatic wire-winding and welding equipment for common-mode inductors and includes the following steps:

[0057] S1: By activating the miniature electric actuator 12 on the connector 11, the output end of the miniature electric actuator 12 moves down with the hollow frame 13 and the air supply pipe 17, and the air pump connected to the air supply pipe 17 is activated simultaneously, so that hot air is sprayed to the connector through the air supply pipe 17, the hollow frame 13 and several air outlets 14.

[0058] S2: When the miniature electric actuator 12 moves, the first multi-stage protective tube 21 moves along with it and draws in gas. When the miniature electric actuator 12 is reset, the gas in the first multi-stage protective tube 21 is blown to the surface of the weld through the connecting hole 26.

[0059] S3: Simultaneously energize the electromagnet 33 and the electromagnet block 34 in the slide 31, so that the slide rod 32 moves the electromagnet 33, the elastic rope 35, the rectangular plate 36 and the brush 37 towards the joint, and uses the brush 37 to clean the joint.

[0060] Working principle: After the magnetic core is wound with the winding coil 6, the joint of the winding coil 6 will protrude. At this time, the drive module 4 on the automatic winding and welding machine 1 moves the clamping module 5, which clamps the magnetic core and moves it to the welding pool 3 filled with liquid tin for welding. After the clamping module 5 completes the welding task on the joint of the magnetic winding coil 6, it will lift up, so that the joint leaves the welding pool 3. At this time, the micro electric actuator 12 on the connecting seat 11 is activated, so that the output end of the micro electric actuator 12 moves the hollow frame 13 and the air supply pipe 17 downward. At the same time, the air pump connected to the air supply pipe 17 is activated, so that hot air is delivered to the hollow frame 13 through the air supply pipe 17 and sprayed onto the joint through several air outlets 14 in the hollow frame 13. By setting the connecting plate 15 and the through slot 16, the air supply pipe 17 can move along a stable path in conjunction with the hollow frame 13, and the rolling ball 50 can reduce friction, facilitating the movement of the air supply pipe 17 within the through slot 16, thereby reducing frictional loss of the air supply pipe 17. After the air blowing operation is completed, the miniature electric actuator 12 moves the hollow frame 13 upward through its output end, thus not affecting the subsequent placement of the magnetic core onto the conveyor 2 for further processing.

[0061] When the miniature electric actuator 12 moves downwards with the hollow frame 13, the first multi-stage protective tube 21 and the second multi-stage protective tube 22 will stretch in conjunction with the hollow frame 13, thereby protecting the output end of the miniature electric actuator 12. When the first multi-stage protective tube 21 is stretched in conjunction with the hollow frame 13, it will draw gas from the gas storage box 291 into the first multi-stage protective tube 21 through the air inlet pipe 23 and the connecting pipe 293, and fill the several semi-circular hollow tubes of the first multi-stage protective tube 21 through several round holes. When the miniature electric actuator 12 returns to its original position with the hollow frame 13, the first multi-stage protective tube 21 and the second multi-stage protective tube 22 will also retract. At this time, the first multi-stage protective tube 21 will inject the internal gas into the rectangular frame 25 through the air outlet pipe 24, and blow it out onto the surface of the welding pool 3 through several connecting holes 26 of the rectangular frame 25. Because an arc-shaped baffle 27 is installed at the connecting hole 26, some gas is directly sprayed through the through groove 16 of the baffle 27 towards the far end of the surface of the welding pool 3, while the other part of the gas is directly guided by the baffle 27 to the surface of the welding joint. The arc-shaped baffle 27 also serves to prevent impurities from entering the connecting hole 26. Furthermore, each time it is used, the first multi-stage protective tube 21 will draw in some gas from the gas storage box 291 to perform a blowing operation on the used liquid tin. When the gas in the gas storage box 291 is depleted, it can be replenished through the gas injection pipe 292.

[0062] After the hollow frame 13 completes the blowing of hot air, the electromagnet 33 and electromagnetic block 34 in the slide 31 are simultaneously energized, causing the slide rod 32 to move the electromagnet 33, elastic rope 35, rectangular plate 36, and brush 37 towards the joint. The brush 37 is then used to clean the joint. As the miniature electric push rod 12 moves the components upwards, the electromagnet 33 and electromagnetic block 34 are de-energized. At this time, the slide rod 32 and brush 37, along with other components, will reset under the action of the elastic rope 35 for subsequent use. Previously, the downward movement of the hollow frame 13 stretched the second multi-stage protective tube 22, drawing gas into it through the round tube 41. As the micro electric actuator 12 moves the hollow frame 13 upwards and resets, the gas in the second multi-stage protective tube 22 enters the cavity 43 through the connecting tube 42, pushing the sliding plate 44 and other components such as the fixing plate 45 within the cavity 43 to move. This causes the sliding plate 44 to leave the cavity 43, allowing the fixing plate 45, crossbar 47, and several connecting balls 48 to be inserted into the brush 37. These components then vibrate to shake off impurities from the brush 37. Since the sliding plate 44 no longer seals the cavity 43, subsequent gas continues to blow onto the brush 37, achieving air cleaning of the brush 37. When the gas stops being ejected, the connecting rope 46 slides the sliding plate 44 and other components into the cavity 43 to reset. At the same time, the arc-shaped surface of the guide block 491 and several guide posts 492 assist the sliding plate 44 in resetting.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] 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 claimed invention.

Claims

1. An automatic winding and welding device for common mode inductors, comprising an automatic winding and welding machine (1), and a conveyor (2), a welding pool (3), a drive module (4), and a clamping module (5) mounted on the automatic winding and welding machine (1), wherein the clamping module (5) clamps a magnetic core with a winding coil (6), and the winding coil (6) has a protruding wire end (7); characterized in that: Also includes: The air delivery mechanism (10) includes a connecting seat (11) fixedly installed on the clamping module (5), a miniature electric actuator (12) fixedly installed on the connecting seat (11), a hollow frame (13) fixedly installed at the output end of the miniature electric actuator (12), and a plurality of air outlet holes (14) connected to the interior are opened on one side of the hollow frame (13). Several connecting plates (15) with through slots (16) are fixedly installed on one side of the miniature electric actuator (12) and the hollow frame (13). An air supply pipe (17) connected to the interior is fixedly installed at one end of the hollow frame (13). The air supply pipe (17) passes through the through slot (16) of the connecting plate (15) and is connected to an external air pump.

2. The automatic winding and welding equipment for common mode inductors according to claim 1, characterized in that: A protective mechanism (20) is provided between the miniature electric actuator (12) and the hollow frame (13). The protective mechanism (20) includes a first multi-stage protective tube (21) and a second multi-stage protective tube (22) fixedly installed between the miniature electric actuator (12) and the hollow frame (13). The first multi-stage protective tube (21) and the second multi-stage protective tube (22) are both composed of several semi-circular hollow tubes, and the several semi-circular tubes are slidably connected to each other. The semicircular tubes of the first multi-stage protective tube (21) are mutually sealed and slidably connected, and the semicircular tubes are connected through round holes. One side of the first multi-stage protective tube (21) is fixedly installed with an air inlet pipe (23) that is connected to the interior and has a one-way valve. One side of the first multi-stage protective tube (21) is fixedly installed with an air outlet pipe (24) with a one-way valve. One end of the air outlet pipe (24) is fixedly installed with a hollow rectangular frame (25). One side of the rectangular frame (25) has several connecting holes (26) that are connected to the interior.

3. The automatic winding and welding equipment for common mode inductors according to claim 2, characterized in that: A number of arc-shaped baffles (27) are fixedly installed on one side of the rectangular frame (25), and a number of rectangular grooves (28) penetrating through the baffles (27) are provided on the baffles (27).

4. The automatic winding and welding equipment for common mode inductors according to claim 2, characterized in that: The connecting seat (11) is provided with an air storage component (29). The air storage component (29) includes an air storage box (291) fixedly installed on the connecting seat (11). An air injection pipe (292) with a one-way valve is fixedly installed on the top of the air storage box (291). A connecting pipe (293) connected to the air inlet pipe (23) is fixedly installed on one side of the air storage box (291).

5. The automatic winding and welding equipment for common mode inductors according to claim 2, characterized in that: The hollow frame (13) is provided with a wiping mechanism (30). The wiping mechanism (30) includes a slide groove (31) opened in the hollow frame (13). A slide rod (32) is slidably connected in the slide groove (31) by an elastic rope (35). An electromagnet (33) is fixed at one end of the slide rod (32). An electromagnet block (34) is installed in the slide groove (31). A rectangular plate (36) is fixedly installed at the other end of the slide bar (32), and a brush (37) is installed on the rectangular plate (36).

6. The automatic winding and welding equipment for common mode inductors according to claim 5, characterized in that: The second multi-stage protection pipe (22) is provided with a cleaning mechanism (40). The cleaning mechanism (40) includes a round pipe (41) with a one-way valve and connected to the inside of the second multi-stage protection pipe (22). A connecting pipe (42) with a one-way valve is fixedly installed on the second multi-stage protection pipe (22). Several semi-circular pipes of the second multi-stage protection pipe (22) are mutually sealed and slidably connected, and several semi-circular pipes are connected to each other through round holes. One end of the connecting pipe (42) is connected to the inclined cavity (43) inside the hollow frame (13).

7. The automatic winding and welding equipment for common mode inductors according to claim 6, characterized in that: The cavity (43) is sealed and slidably connected to a sliding plate (44) with a connecting rope (46). An arc-shaped fixing plate (45) is fixedly installed at one end of the sliding plate (44). A crossbar (47) is fixedly installed on the fixing plate (45). Several connecting balls (48) are fixedly installed on the surface of the crossbar (47).

8. The automatic winding and welding equipment for common mode inductors according to claim 7, characterized in that: The hollow frame (13) is provided with a guide component (49), the guide component (49) includes a guide block (491) fixedly connected to the hollow frame (13) and having one side arc-shaped, and a guide post (492) is rotatably connected to the arc-shaped surface of the guide block (491).

9. The automatic winding and welding equipment for common mode inductors according to claim 1, characterized in that: The connecting plate (15) has several rolling balls (50) that are connected to the through groove (16).

10. A welding process for automatic winding and welding of common mode inductors, wherein the process uses the automatic winding and welding equipment for common mode inductors according to any one of claims 1-9, characterized in that: The process includes the following steps: S1: By starting the miniature electric actuator (12) on the connector (11), the output end of the miniature electric actuator (12) moves down with the hollow frame (13) and the air supply pipe (17), and the air pump connected to the air supply pipe (17) is started at the same time, so that the hot air is sprayed to the joint through the air supply pipe (17), the hollow frame (13) and several air outlets (14); S2: When the micro electric actuator (12) moves, the first multi-stage protective tube (21) moves along with it and draws in gas. When the micro electric actuator (12) is reset, the gas in the first multi-stage protective tube (21) is blown to the surface of the weld through the connecting hole (26). S3: Simultaneously energize the electromagnet (33) and the electromagnet block (34) in the slide (31), so that the slide rod (32) moves the electromagnet (33), the elastic rope (35), the rectangular plate (36) and the brush (37) towards the joint, and use the brush (37) to clean the joint.

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