A laser processing method for removing paint from inductive surfaces

Abstract

This application discloses a laser processing method for removing paint from the surface of an inductor, comprising the following steps: S1, the inductor to be coated is fed onto a conveyor belt via a vibratory feeder; S2, a rotary feeding assembly picks up the inductor to be coated from the conveyor belt and transports it to a worktable; S3, a vision inspection assembly identifies the contour and angle of the inductor, calculates the coordinates of the area to be coated, and compensates the laser scanning path based on the identification results; S4, two laser beams output from two lasers are respectively irradiated onto the inductor by their respective corresponding galvanometers and focusing lenses; wherein, the galvanometers and focusing lenses are installed at a 45° angle, so that the emitted laser beams form a 45° angle with the upper surface of the inductor, and the two laser beams simultaneously remove paint from the upper surface and two side end faces of the inductor; S5, after the paint removal is completed, an unloading assembly transfers the inductor to an unloading conveyor belt to complete the unloading. This application can achieve multi-sided simultaneous paint removal with only one clamping and positioning of the inductor, resulting in high paint removal efficiency.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to a laser processing method for removing paint from inductive surfaces. Background Technology

[0002] Power inductors, as a key electronic component, are mainly used in fields such as intelligent driving and intelligent connected vehicles. The inductor body is usually made of iron powder or alloy powder, and its surface is coated with an epoxy resin varnish layer. Before mounting the power inductor onto the circuit board, the varnish layer covering the inductor terminals needs to be removed to expose the conductive material so that the inductor can be soldered to other components to achieve circuit connection.

[0003] There are two main types of existing paint removal methods: one is physical mechanical paint removal, which uses a special high-speed paint stripping blade to remove the paint layer physically; the other is chemical paint removal, which uses paint stripping agents to chemically treat the inductor by inserting the inductor's end into the paint stripping agent to dissolve the insulating paint. However, this method may have technical problems such as inductor shedding and chemical vapor affecting the magnetic core.

[0004] Currently, the mainstream solution for industrial paint removal is laser paint removal technology. Traditional inductor paint removal equipment typically uses a single laser to remove paint layers from multiple surfaces of the inductor. After removing paint from one surface, the inductor's orientation is manually adjusted or a robotic arm is used to process the next surface. The entire process requires at least multiple loading, positioning, and processing operations, resulting in low production efficiency and failing to meet the demands of modern mass production. Furthermore, multiple positioning and clamping operations inevitably introduce cumulative errors, affecting paint removal accuracy and product consistency, and may even lead to component damage. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a laser processing method for removing paint from inductor surfaces.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a laser processing method for removing paint from an inductor surface, comprising the following steps: S1. The inductor to be de-coated is fed onto the track conveyor belt via a vibratory feeder; S2. The rotary feeding assembly picks up the inductors to be de-painted from the track conveyor belt and transports them to the worktable; S3. The visual inspection component identifies the contour and angle of the inductor, calculates the coordinates of the area where the paint needs to be removed from the inductor, and compensates the laser scanning path based on the identification results. S4. Two laser beams output from two lasers are respectively irradiated onto the inductor through their respective galvanometers and focusing lenses. The galvanometers and focusing lenses are installed at a 45° angle, so that the emitted laser beams form a 45° angle with the upper surface of the inductor. The two laser beams are obliquely incident on the two side faces of the inductor and cover the upper surface of the inductor, removing the paint from the upper surface and the two side faces simultaneously. During paint removal, the laser focus is moved downwards by a preset distance from the edge where the upper surface and the side faces of the inductor intersect along the height direction of the inductor, so that the laser focus is located in the middle of the paint layer thickness direction of the inductor. S5. After the paint is removed, the unloading assembly transfers the inductor to the unloading conveyor belt to complete the unloading.

[0007] Furthermore, in step S4, the preset distance is 0.35H, where H is the side paint removal height of the inductor, and the side paint removal height is the same as the top surface paint removal width.

[0008] Furthermore, in step S4, the laser is a nanosecond ultraviolet laser with an output wavelength of 355nm, a power of 15W, a pulse width of 16ns, and a repetition frequency that is adjustable in the range of 30~200kHz.

[0009] Furthermore, in step S2, the rotary feeding assembly includes an installation unit and an adsorption unit, and the installation unit includes an installation frame, a rotating frame and a first motor; The mounting frame is located on one side of the discharge end of the track conveyor belt. The rotating frame is rotatably mounted on the mounting frame. The first motor is mounted on the mounting frame and is used to drive the rotating frame to rotate. The adsorption unit is provided in multiple sets and evenly distributed around the rotating frame. The adsorption unit includes a mounting block and a first electromagnet. The mounting block is fixed on the rotating frame, and the first electromagnet is fixed on the mounting block and used to adsorb the inductance of the paint to be removed at the discharge end of the track conveyor belt.

[0010] Furthermore, a base is provided on the side of the mounting frame away from the track conveyor belt, and the worktable is rotatably mounted on the base. The unloading assembly includes a fixed frame, a horizontal linear module, a vertical linear module, and a second electromagnet. The fixed frame is set between the base and the unloading conveyor belt. The horizontal linear module is set on the fixed frame. The horizontal linear module is used to drive the vertical linear module to move towards or away from the axis of the worktable. The vertical linear module is used to drive the second electromagnet to lift.

[0011] Furthermore, a first frame and a second frame are fixed on the frame of the track conveyor belt, and a conveyor belt is set between the first frame and the second frame. The conveying direction of the conveyor belt is parallel to the conveying direction of the track conveyor belt. One end of the conveyor belt is located directly above the discharge end of the track conveyor belt, and multiple magnetic blocks are uniformly fixed on the outer surface of the conveyor belt. A first sensor is installed at the position corresponding to the first frame of the track conveyor belt; a first through hole is provided through the frame on both sides of the first frame, and a spring is installed in the first through hole; a flipping mechanism for flipping the inverted inductor is provided on the first frame; the flipping mechanism includes a flipping component and a lifting component. The flipping assembly includes a slider, a rotating rod, a flipping motor, a connecting rod, and a third electromagnet. The slider slides into the first through hole. Both the slider and the spring are provided with two holes on the frame on both sides of the first frame. The upper and lower ends of the spring are fixed to the bottom of the slider and the bottom of the first through hole, respectively. The rotating rod is horizontally mounted and rotatably installed between the two sliders. The flipping motor is fixed to one of the sliders, and one end of the rotating rod is fixed to the output end of the flipping motor. The connecting rod is fixed to the rotating rod, and its position in the axial direction of the rotating rod corresponds to the magnetic block. Multiple connecting rods are provided and evenly distributed around the rotating rod. The third electromagnet is fixed to the end of the connecting rod away from the rotating rod. The number of third electromagnets is equal to the number of connecting rods, and their positions correspond one-to-one. A controller electrically connected to the first sensor is fixed on the first frame. The lifting assembly is controlled by the controller and is used to drive the slider to rise and fall along the first through hole. The frame of the track conveyor belt is equipped with a return assembly, which is used to return the inductance adsorbed on the conveyor belt to the discharge end of the track conveyor belt.

[0012] Furthermore, the lifting assembly includes a connecting plate, an L-shaped plate, a cylinder, and a shaped push rod; the connecting plate is fixed to the slider, the L-shaped plate is fixed to the first frame, and the cylinder is fixed to the L-shaped plate; one end of the shaped push rod is fixed to the piston rod end of the cylinder, and the other end of the shaped push rod is provided with an abutting inclined surface; the connecting plate is provided with an inclined surface that cooperates with the abutting inclined surface, and the connecting plate is located between the cylinder and the first frame.

[0013] Furthermore, a second sensor is installed at the position corresponding to the second frame of the track conveyor belt. A second through hole is installed on both sides of the second frame, and a spring is installed in the second through hole. A flipping mechanism for flipping the inverted inductor is also installed on the second frame.

[0014] Furthermore, the return assembly includes a mounting plate and a rectangular tube. The mounting plate is fixed to the frame of the track conveyor belt near the discharge end. The distance between the bottom of the mounting plate and the belt of the track conveyor belt is equal to the thickness of the inductor, so that the inductor entering the rectangular tube falls back onto the track conveyor belt. The rectangular tube is fixed to the top of the mounting plate, and its top is flush with the bottom of the magnetic block. A feed notch is provided at the intersection between the upper end of the rectangular tube and the side of the rectangular tube away from the rotating frame.

[0015] Furthermore, a dredging hole is provided on one side wall of the rectangular tube.

[0016] In summary, the present invention has the following beneficial effects: During the paint stripping process, the inductor to be stripped is automatically fed onto a conveyor belt via a vibratory feeder, and then picked up and transported to the worktable by a rotary feeding assembly. The feeding and conveying process is highly automated, and the feeding rhythm is stable. After the inductor reaches the worktable, the vision detection assembly identifies the contour and angle of the inductor, calculates the coordinates of the area to be stripped, and compensates for the laser scanning path based on the identification results, thereby compensating for the position and angle deviation of the inductor and ensuring the accuracy of the laser's action position. Subsequently, two laser beams output from two lasers are respectively irradiated onto the inductor by a galvanometer and a focusing lens. Because the galvanometer and focusing lens are installed at a 45° angle, the emitted laser beams form a 45° angle with the upper surface of the inductor. The two laser beams are obliquely incident on the two side end faces of the inductor and cover the upper surface of the inductor, thereby removing the paint from the inductor. With a single clamping and positioning, the top surface and two side faces of the inductor are simultaneously stripped of paint. This eliminates the need for manual or robotic adjustments to the inductor's orientation after each surface is stripped, reducing the number of loading, positioning, and processing operations. This results in high paint stripping efficiency and avoids the cumulative errors introduced by multiple clamping and positioning operations, ensuring good paint stripping accuracy and product consistency. During paint stripping, the laser focus is moved downwards a preset distance from the edge where the top surface and side faces of the inductor intersect, along the inductor's height direction. This positions the laser focus at the center of the paint layer thickness, ensuring that the laser energy is concentrated on the paint layer and that the paint layer on the top surface and side faces is completely removed. After paint stripping, the unloading assembly transfers the inductor to the unloading conveyor belt for unloading. The entire paint stripping process can be automated, highly efficient, and highly accurate, completing multi-sided paint stripping of the inductor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram illustrating the state of laser removal of the inductor coating layer in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of Embodiment 2 of the present invention to highlight the track conveyor belt and its connection structure; Figure 7 This is a schematic diagram of the structure of the recycling component in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the structure of the material recycling component in Embodiment 3 of the present invention.

[0018] In the diagram: 1. Inductor; 2. Track conveyor belt; 21. First frame; 211. First through hole; 212. Controller; 22. Second frame; 221. Second through hole; 23. First sensor; 3. Rotary feeding assembly; 31. Mounting unit; 311. Mounting frame; 312. Rotating frame; 313. First motor; 32. Adsorption unit; 321. Mounting block; 322. First electromagnet; 4. Workbench; 41. Base; 5. Vision inspection assembly; 6. Laser; 7. Unloading assembly; 71. Fixing frame; 72. Horizontal linear module; 73. Vertical linear module; 74. Second electromagnet 8. Iron; 9. Feeding conveyor belt; 10. Conveyor belt; 11. Magnetic block; 12. Spring; 13. Tilting mechanism; 14. Tilting assembly; 15. Slider; 16. Rotating rod; 17. Tilting motor; 18. Connecting rod; 19. Third electromagnet; 10. Lifting assembly; 11.2. Connecting plate; 11.2.1. Inclined surface; 12. L-shaped plate; 13. Cylinder; 14. Irregular push rod; 15.1. Abutting inclined surface; 16. Return assembly; 17.2. Mounting plate; 18.2. Rectangular tube; 19.2.1. Feed notch; 10.2. Unblocking hole. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] Example 1 like Figure 1-3 As shown in the figure, this application discloses a laser processing method for removing paint from an inductor surface, including the following steps: S1. The inductor 1 to be de-coated is fed onto the track conveyor belt 2 via a vibratory feeder (the track conveyor belt 2 adopts a conventional belt drive method). S2. The rotary feeding assembly 3 picks up the inductor 1 to be de-painted on the track conveyor belt 2 and transports it to the worktable 4. S3. The visual inspection component 5 (existing technology, which will not be described in detail in this embodiment) identifies the contour and angle of the inductor 1, calculates the coordinates of the area of ​​the inductor 1 that needs to be de-painted, and compensates the laser scanning path according to the identification results. S4. Two laser beams output from two lasers 6 are respectively irradiated onto inductor 1 through their respective galvanometers and focusing lenses; wherein, the galvanometers and focusing lenses are installed at an overall angle of 45°, so that the emitted laser beams form a 45° angle with the upper surface of inductor 1. The two laser beams are respectively obliquely incident on the two side end faces of inductor 1 and cover the upper surface of inductor 1, and simultaneously remove paint from the upper surface and the two side end faces of inductor 1; during paint removal, the laser focus is moved downward along the height direction of inductor 1 by a preset distance from the edge where the upper surface of inductor 1 and the side end faces intersect, so that the laser focus is located in the middle of the paint layer thickness direction of inductor 1; S5. After the paint is removed, the unloading assembly 7 transfers the inductor 1 to the unloading conveyor belt 8 (using a conventional belt drive method) to complete the unloading.

[0021] During the paint removal process, the inductor 1 to be removed is automatically fed onto the track conveyor belt 2 via a vibratory feeder, and then picked up and transported to the worktable 4 by the rotary feeding assembly 3. The feeding and conveying process is highly automated, and the feeding rhythm is stable. After the inductor 1 arrives at the worktable 4, the vision detection assembly 5 identifies the contour and angle of the inductor 1, calculates the coordinates of the area to be removed, and compensates for the laser scanning path based on the identification results, thereby compensating for the position and angle deviation of the inductor 1 and ensuring the accuracy of the laser's action position. Subsequently, two laser beams output by two lasers 6 are respectively irradiated onto the inductor 1 by a galvanometer and a focusing lens. Since the galvanometer and focusing lens are installed at an overall tilt of 45°, the emitted laser beams form a 45° angle with the upper surface of the inductor 1. The two laser beams are obliquely incident on the two side end faces of the inductor 1 and cover the upper surface of the inductor 1, thereby achieving the desired effect. With inductor 1 clamped and positioned in a single operation, the top surface and two side end faces of inductor 1 are simultaneously stripped of paint. This eliminates the need for manual or robotic adjustments to the inductor 1's orientation after each surface is stripped, reducing the number of loading, positioning, and processing operations. This results in high paint stripping efficiency and avoids the cumulative errors introduced by multiple clamping and positioning operations, ensuring good paint stripping accuracy and product consistency. During paint stripping, the laser focus is moved downwards a preset distance from the edge where the top surface and side end faces of inductor 1 intersect, positioning the laser focus at the center of the paint layer thickness. This ensures that the laser energy is concentrated on the paint layer, guaranteeing complete removal of the paint layer from both the top and side end faces. After paint stripping, the unloading assembly 7 transfers inductor 1 to the unloading conveyor belt 8 for unloading. The entire paint stripping process can be automated, efficient, and precise, completing multi-sided paint stripping of inductor 1.

[0022] In step S4, the preset distance is 0.35H, where H is the side paint removal height of inductor 1. The side paint removal height is the same as the top surface paint removal width. The laser focus moves downward along the height direction of inductor 1 from the edge where the top surface and side end face of inductor 1 intersect by a distance that is 0.35 times the side paint removal height of inductor 1. This ensures that the laser focus is stably located in the middle position in the paint layer thickness direction. This guarantees that the laser can cover the entire paint removal area on the top surface and side end face of inductor 1, while avoiding incomplete paint removal or damage to the inductor 1 body caused by the focus position deviating from the middle of the paint layer. This further improves the paint removal quality and product consistency.

[0023] In step S4, laser 6 is a nanosecond ultraviolet laser with an output wavelength of 355nm, a power of 15W, a pulse width of 16ns, and a repetition frequency adjustable within the range of 30~200kHz. The nanosecond ultraviolet laser 6, with its short wavelength and high photon energy, effectively removes the epoxy resin coating from the surface of inductor 1. Furthermore, the nanosecond pulse width shortens the interaction time between the laser and the coating, minimizing the heat-affected zone and reducing thermal damage to the inductor 1 and its internal magnetic core during the coating removal process. Simultaneously, the adjustable repetition frequency within the 30~200kHz range allows for flexible matching of processing parameters based on the coating thickness and material, ensuring both coating removal efficiency and quality.

[0024] In step S2, the rotary feeding assembly 3 includes an installation unit 31 and an adsorption unit 32. The installation unit 31 includes an installation frame 311, a rotating frame 312, and a first motor 313. The installation frame 311 is located on one side of the discharge end of the track conveyor belt 2. The rotating frame 312 is rotatably mounted on the installation frame 311. The first motor 313 is mounted on the installation frame 311 and is used to drive the rotating frame 312 to rotate. The adsorption unit 32 has multiple sets and is evenly distributed around the rotating frame 312. The adsorption unit 32 includes an installation block 321 and a first electromagnet 322. The installation block 321 is fixed on the rotating frame 312. The first electromagnet 322 is fixed on the installation block 321 and is used to adsorb the inductor 1 to be de-painted at the discharge end of the track conveyor belt 2.

[0025] During material feeding, the first motor 313 drives the rotating frame 312 to rotate around the mounting frame 311, which in turn drives the adsorption units 32 evenly distributed around the rotating frame 312 to operate synchronously. When the adsorption unit 32 rotates with the rotating frame 312 to the discharge end of the track conveyor belt 2, the first electromagnet 322 adsorbs the inductor 1 to be de-coated. The adsorption unit 32 continues to rotate with the rotating frame 312 to transport the inductor 1 to one side of the workbench 4. Each adsorption unit 32 picks up and feeds material in sequence, realizing continuous and automatic material feeding of the inductor 1. The material feeding rhythm is stable and it is smoothly connected with the subsequent de-coating and unloading processes, which is conducive to improving the overall processing efficiency. At the same time, the electromagnet adsorption method causes little damage to the inductor 1 and the picking and placing action is reliable.

[0026] A base 41 is provided on the side of the mounting frame 311 away from the track conveyor belt 2. The worktable 4 is rotatably mounted on the base 41. The unloading assembly 7 includes a fixed frame 71, a horizontal linear module 72, a vertical linear module 73, and a second electromagnet 74. The fixed frame 71 is located between the base 41 and the unloading conveyor belt 8. The horizontal linear module 72 is located on the fixed frame 71. The horizontal linear module 72 is used to drive the vertical linear module 73 to move towards or away from the axis of the worktable 4. The vertical linear module 73 is used to drive the second electromagnet 74 to rise and fall.

[0027] The workbench 4 is rotatably mounted on the base 41, allowing the inductor 1 to flexibly switch between the pick-up and put-down station and the paint removal station on the workbench 4. This facilitates the connection between the feeding action of the rotating feeding component 3 and the unloading action of the unloading component 7. After the paint removal is completed, the horizontal linear module 72 drives the vertical linear module 73 and the second electromagnet 74 to move to the workbench 4. The vertical linear module 73 drives the second electromagnet 74 to descend and attract the inductor 1 after the paint removal is completed. Then, through the cooperation of the horizontal linear module 72 and the vertical linear module 73, the inductor 1 is transferred to the unloading conveyor belt 8, realizing the automatic unloading of the inductor 1. The unloading process is smooth and orderly, without manual intervention, ensuring the continuity of production.

[0028] Example 2 like Figure 4-7 As shown, the difference between this embodiment and Embodiment 1 is that: a first frame 21 and a second frame 22 are fixed on the frame of the track conveyor belt 2, and a conveyor belt 9 (using a conventional belt drive method) is arranged between the first frame 21 and the second frame 22. The conveying direction of the conveyor belt 9 is parallel to the conveying direction of the track conveyor belt 2, one end of the conveyor belt 9 is located directly above the discharge end of the track conveyor belt 2, and multiple magnetic blocks 91 are uniformly fixed on the outer surface of the conveyor belt 9; a first sensor 23 is arranged at the position corresponding to the first frame 21 on the frame of the track conveyor belt 2 (to determine whether the inductor 1 is inverted by identifying the characteristics of the top end face); a first through hole 211 is provided through the frame on both sides of the first frame 21, and a spring 10 is arranged in the first through hole 211; a flipping mechanism 11 for flipping the inverted inductor 1 is provided on the first frame 21; the flipping mechanism 11 includes a flipping component 111 and a lifting component 112; The flipping assembly 111 includes a slider 1111, a rotating rod 1112, a flipping motor 1113, a connecting rod 1114, and a third electromagnet 1115 (the first electromagnet 322, the second electromagnet 74, and the third electromagnet 1115 are only schematic diagrams in the figure, and their shapes and structures are not limited). The slider 1111 is slidably engaged with the first through hole 211. Both the slider 1111 and the spring 10 are provided with two first through holes 211 located on both sides of the first frame 21. The upper and lower ends of the spring 10 are fixed to the bottom of the slider 1111 and the bottom of the first through hole 211, respectively. The rotating rod 1112 is horizontally arranged and rotatably mounted between the two sliders 1111. The flipping motor 1113 is fixed to one of the sliders 1111, and one end of the rotating rod 1112 is connected to the flipping motor. The output end of 1113 is fixed; the connecting rod 1114 is fixed on the rotating rod 1112, and its position in the axial direction of the rotating rod 1112 corresponds to the magnetic block 91. Multiple connecting rods 1114 are provided and evenly distributed around the rotating rod 1112; the third electromagnet 1115 is fixed to the end of the connecting rod 1114 away from the rotating rod 1112. The number of third electromagnets 1115 is equal to the number of connecting rods 1114 and their positions correspond one-to-one; a controller 212 electrically connected to the first sensor 23 is fixed on the first frame 21. The lifting assembly 112 is controlled by the controller 212 and is used to drive the slider 1111 to rise and fall along the first through hole 211; a return assembly 12 is provided on the frame of the track conveyor belt 2 to return the inductor 1 adsorbed on the conveyor belt 9 to the discharge end of the track conveyor belt 2.

[0029] After being fed by the vibratory feeder, inductor 1 is conveyed forward by the track conveyor belt 2. During the conveying process, the first sensor 23 monitors whether inductor 1 is inverted. When inductor 1 is detected to be inverted, the controller 212 controls the lifting component 112 to drive the slider 1111 to descend along the first through hole 211, so that the third electromagnet 1115 can attract the inverted inductor 1. The flipping motor 1113 drives the rotating rod 1112 to drive the connecting rod 1114 and the third electromagnet 1115 to flip 180 degrees as a whole. Then, the magnetic block 91 on the conveyor belt 9 attracts the inductor 1 after it has been flipped. At this time, the third electromagnet 1115 is de-energized, and inductor 1 is conveyed forward with the conveyor belt 9. Finally, the inductor 1 attracted by the magnetic block 91 on the conveyor belt 9 is finally rotated back to the discharge end of the track conveyor belt 2 by the return component 12 and participates in the feeding again, so as to avoid the inductor 1 from being stuck or accumulating on the conveyor belt 9 and to ensure the continuity of the feeding process.

[0030] The lifting assembly 112 includes a connecting plate 1121, an L-shaped plate 1122, a cylinder 1123, and a shaped push rod 1124. The connecting plate 1121 is fixed to the slider 1111, the L-shaped plate 1122 is fixed to the first frame 21, and the cylinder 1123 is fixed to the L-shaped plate 1122. One end of the shaped push rod 1124 is fixed to the piston rod end of the cylinder 1123, and the other end of the shaped push rod 1124 is provided with an abutting inclined surface 11241. The connecting plate 1121 is provided with an inclined surface 11211 that cooperates with the abutting inclined surface 11241, and the connecting plate 1121 is located between the cylinder 1123 and the first frame 21.

[0031] When the lifting assembly 112 is working, the piston rod of the cylinder 1123 extends, pushing the irregular push rod 1124 to move horizontally. Since the abutting inclined surface 11241 at the end of the irregular push rod 1124 abuts against the inclined surface 11211 on the connecting plate 1121, the slider 1111 moves downward along the first through hole 211 under the action of the spring 10, causing the third electromagnet 1115 to attract the inverted inductor 1. Subsequently, the piston rod of the cylinder 1123 retracts, pulling the irregular push rod 1124 back to its original position. The abutting inclined surface 11241 and the inclined surface 11211 cooperate and push the connecting plate 1121 upward, thereby causing the slider 1111 to move upward. The flipping motor 1113 drives the rotating rod 1112 to rotate the connecting rod 1114 and the third electromagnet 1115 by 180 degrees. When the slider 1111 abuts against the inner top wall of the first through hole 211, the magnetic block 91 on the conveyor belt 9 attracts the inductor 1 after it has been flipped.

[0032] A second sensor is installed at the corresponding position of the frame of the track conveyor belt 2 and the second frame 22. A second through hole 221 is provided through both sides of the frame of the second frame 22, and a spring 10 is also installed inside the second through hole 221. A flipping mechanism 11 for flipping the inverted inductor 1 is also provided on the second frame 22. Two monitoring and flipping stations are set at intervals along the conveying direction on the track conveyor belt 2 to monitor the inverted state of the inductor 1 during conveying twice. Even if an individual inverted inductor 1 is not effectively identified or corrected at the previous station, it can still be detected by the second sensor at the next station and flipped by the corresponding flipping mechanism 11, thus ensuring that the inductor 1 entering the subsequent process is oriented correctly and further improving the reliability of material feeding.

[0033] The return assembly 12 includes a mounting plate 121 and a rectangular tube 122. The mounting plate 121 is fixed to the frame of the track conveyor belt 2 near the discharge end. The distance between the bottom of the mounting plate 121 and the belt of the track conveyor belt 2 is equal to the thickness of the inductor 1, so that the inductor 1 entering the rectangular tube 122 falls back onto the track conveyor belt 2. The rectangular tube 122 is fixed to the top of the mounting plate 121, and its top is flush with the bottom of the magnetic block 91. A feed notch 1221 is provided at the intersection between the upper end of the rectangular tube 122 and the side of the rectangular tube 122 away from the rotating frame 312.

[0034] After being attracted by the magnetic block 91, the inductor 1 is conveyed to the end by the conveyor belt 9 and enters the rectangular tube 122 through the feed notch 1221. Since the top of the rectangular tube 122 is flush with the bottom of the magnetic block 91, the inductor 1 can smoothly detach from the magnetic block 91 and enter the rectangular tube 122 without easily getting stuck. The inductor 1 that has entered the rectangular tube 122 falls out from the bottom of the rectangular tube 122. Since the distance between the bottom of the mounting plate 121 and the belt of the track conveyor belt 2 is equal to the thickness of the inductor 1, the fallen inductor 1 falls back onto the track conveyor belt 2 and is conveyed to the discharge end with the belt, realizing the automatic return of the inductor 1. The return process is smooth and reliable.

[0035] Example 3 like Figure 4 , Figure 6 and Figure 8 As shown, the only difference between this embodiment and Embodiment 2 is that a dredging hole 1222 is provided on one side wall of the rectangular tube 122. When the inductor 1 becomes stuck inside the rectangular tube 122, the operator can clear the stuck inductor 1 through the dredging hole 1222 to prevent the inductor 1 from accumulating and blocking inside the rectangular tube 122, thus affecting the continuity of material return and ensuring the long-term stable operation of the material return assembly 12.

[0036] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A laser processing method for removing paint from inductive surfaces, characterized in that, Includes the following steps: S1. The inductor (1) to be de-coated is fed onto the track conveyor belt (2) via a vibratory feeder; S2. The rotary feeding assembly (3) picks up the inductor (1) to be de-painted on the track conveyor belt (2) and transports it to the worktable (4); S3. The visual inspection component (5) identifies the contour and angle of the inductor (1), calculates the coordinates of the area of ​​the inductor (1) that needs to be depainted, and compensates the laser scanning path according to the identification results. S4. Two laser beams output by two lasers (6) are respectively irradiated onto the inductor (1) through their respective galvanometers and focusing lenses; wherein, the galvanometers and focusing lenses are installed at an overall angle of 45°, so that the emitted laser beams form a 45° angle with the upper surface of the inductor (1), and the two laser beams are respectively obliquely incident on the two side end faces of the inductor (1) and cover the upper surface of the inductor (1), and the paint is removed from the upper surface and the two side end faces of the inductor (1) at the same time; during the paint removal, the laser focus is moved down a preset distance from the edge where the upper surface of the inductor (1) and the side end face intersect along the height direction of the inductor (1), so that the laser focus is located in the middle of the paint layer thickness direction of the inductor (1); S5. After the paint is removed, the unloading assembly (7) transfers the inductor (1) to the unloading conveyor belt (8) to complete the unloading.

2. The laser processing method for removing paint from an inductive surface according to claim 1, characterized in that: In step S4, the preset distance is 0.35H, where H is the side paint removal height of the inductor (1), and the side paint removal height is the same as the top surface paint removal width.

3. The laser processing method for removing paint from an inductive surface according to claim 1, characterized in that: Step S4 In the middle, the laser (6) is a nanosecond ultraviolet laser with an output laser wavelength of 355nm, a power of 15W, a pulse width of 16ns, and a repetition frequency that is adjustable in the range of 30~200kHz.

4. The laser processing method for removing paint from an inductive surface according to claim 1, characterized in that: In step S2, the rotary feeding assembly (3) includes an installation unit (31) and an adsorption unit (32). The installation unit (31) includes an installation frame (311), a rotating frame (312), and a first motor (313). The mounting frame (311) is located on one side of the discharge end of the track conveyor belt (2), the rotating frame (312) is rotatably mounted on the mounting frame (311), and the first motor (313) is mounted on the mounting frame (311) and used to drive the rotating frame (312) to rotate. The adsorption unit (32) is provided in multiple sets and evenly distributed around the rotating frame (312). The adsorption unit (32) includes a mounting block (321) and a first electromagnet (322). The mounting block (321) is fixed on the rotating frame (312), and the first electromagnet (322) is fixed on the mounting block (321) and used to adsorb the inductor (1) to be depainted at the discharge end of the track conveyor belt (2).

5. The laser processing method for removing paint from an inductive surface according to claim 4, characterized in that: The mounting frame (311) has a base (41) on the side away from the track conveyor belt (2). The workbench (4) is rotatably mounted on the base (41). The unloading assembly (7) includes a fixed frame (71), a horizontal linear module (72), a vertical linear module (73), and a second electromagnet (74). The fixed frame (71) is located between the base (41) and the unloading conveyor belt (8). The horizontal linear module (72) is located on the fixed frame (71). The horizontal linear module (72) is used to drive the vertical linear module (73) to move towards or away from the axis of the worktable (4). The vertical linear module (73) is used to drive the second electromagnet (74) to rise and fall.

6. The laser processing method for removing paint from an inductive surface according to claim 4, characterized in that: The first frame (21) and the second frame (22) are fixed on the frame of the track conveyor belt (2). A conveyor belt (9) is set between the first frame (21) and the second frame (22). The conveying direction of the conveyor belt (9) is parallel to the conveying direction of the track conveyor belt (2). One end of the conveyor belt (9) is located directly above the discharge end of the track conveyor belt (2). Multiple magnetic blocks (91) are uniformly fixed on the outer surface of the conveyor belt (9). A first sensor (23) is installed at the position corresponding to the first frame (21) on the frame of the track conveyor belt (2) to monitor whether the inductor (1) is inverted; a first through hole (211) is provided through the frame on both sides of the first frame (21), and a spring (10) is provided in the first through hole (211); a flipping mechanism (11) is provided on the first frame (21) for flipping the inverted inductor (1); the flipping mechanism (11) includes a flipping component (111) and a lifting component (112); The flipping assembly (111) includes a slider (1111), a rotating rod (1112), a flipping motor (1113), a connecting rod (1114), and a third electromagnet (1115). The slider (1111) is slidably engaged with the first through hole (211). Both the slider (1111) and the spring (10) are provided with two first through holes (211) located on both sides of the first frame (21). The upper and lower ends of the spring (10) are fixed to the bottom of the slider (1111) and the bottom of the first through hole (211), respectively. The rotating rod (1112) is horizontally arranged and rotatably mounted between the two sliders (1111). The flipping motor (1113) is fixed to one of the sliders (1111), and one end of the rotating rod (1112) is fixed to the output end of the flipping motor (1113). The connecting rod (1114) is fixed to the rotating rod (111). 2) On the rotating rod (1112), its position on the axial direction corresponds to the magnetic block (91). Multiple connecting rods (1114) are provided and evenly distributed around the rotating rod (1112). The third electromagnet (1115) is fixed at the end of the connecting rod (1114) away from the rotating rod (1112). The number of third electromagnets (1115) is equal to the number of connecting rods (1114) and their positions correspond one-to-one. A controller (212) is fixed on the first frame (21) and is electrically connected to the first sensor (23) and the flipping motor (1113). When the first sensor (23) detects that the inductor (1) is in an inverted state, the lifting assembly (112) is controlled by the controller (212) and used to drive the slider (1111) to rise and fall along the first through hole (211) to attract the inverted inductor (1) and complete the flipping. Then it is attracted by the magnetic block (91). A return assembly (12) is provided on the frame of the track conveyor belt (2) to rotate the inductor (1) adsorbed on the conveyor belt (9) to the discharge end of the track conveyor belt (2).

7. The laser processing method for removing paint from an inductive surface according to claim 6, characterized in that: The lifting assembly (112) includes a connecting plate (1121), an L-shaped plate (1122), a cylinder (1123), and a shaped push rod (1124). The connecting plate (1121) is fixed on the slider (1111), the L-shaped plate (1122) is fixed on the first frame (21), and the cylinder (1123) is fixed on the L-shaped plate (1122). One end of the shaped push rod (1124) is fixed to the piston rod end of the cylinder (1123), and the other end of the shaped push rod (1124) is provided with an abutting inclined surface (11241). The connecting plate (1121) is provided with an inclined surface (11211) that cooperates with the abutting inclined surface (11241), and the connecting plate (1121) is located between the cylinder (1123) and the first frame (21).

8. The laser processing method for removing paint from an inductive surface according to claim 6, characterized in that: A second sensor is installed at the position corresponding to the frame of the track conveyor belt (2) and the second frame (22). The second sensor is also used to monitor whether the inductor (1) is inverted. A second through hole (221) is provided on both sides of the frame of the second frame (22). A spring (10) is also provided in the second through hole (221). A flipping mechanism (11) for flipping the inverted inductor (1) is also provided on the second frame (22).

9. A laser processing method for removing paint from an inductive surface according to claim 6, characterized in that: The return assembly (12) includes a mounting plate (121) and a rectangular tube (122). The mounting plate (121) is fixed to the frame of the track conveyor belt (2) near the discharge end. The distance between the bottom of the mounting plate (121) and the belt of the track conveyor belt (2) is equal to the thickness of the inductor (1), so that the inductor (1) entering the rectangular tube (122) falls back onto the track conveyor belt (2). The rectangular tube (122) is fixed to the top of the mounting plate (121), and its top is flush with the bottom of the magnetic block (91). A feed notch (1221) is provided at the intersection between the upper end of the rectangular tube (122) and the side of the rectangular tube (122) away from the rotating frame (312).

10. A laser processing method for removing paint from an inductive surface according to claim 6, characterized in that: A dredging hole (1222) is provided on one side wall of the rectangular tube (122).

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