PCB automatic plug-in device

By setting asymmetrical positioning bosses and grooves on the iron core coil and PCB board, combined with a multi-axis drive mechanism and vision inspection, the problem of insertion deviation in the insertion machine is solved, achieving high-precision and high-efficiency iron core insertion, thus improving product quality and production efficiency.

CN224503647UActive Publication Date: 2026-07-14AISIN SEIKI FOSHAN ELECTRONICS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
AISIN SEIKI FOSHAN ELECTRONICS CO LTD
Filing Date
2025-07-11
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing insertion machines are prone to deviations when inserting iron cores into PCB boards, affecting product quality and production efficiency. Furthermore, existing error-proofing measures are complex, costly, and ineffective.

Method used

The design employs a foolproof structure, which ensures the correct insertion direction and position of the iron core by setting asymmetrical positioning bosses and positioning grooves on the iron core coil and PCB board. The mechanical structure limits the insertion deviation, and the combination of multi-axis drive mechanism and vision inspection system enables precise insertion.

Benefits of technology

It effectively avoids core insertion deviation, improves product quality stability and production efficiency, reduces scrap rate, and has a reasonable structural design with controllable cost.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plug -in machine, especially a kind of PCB automatic plug -in device, including rack, the conveying mechanism for conveying PCB of being set on rack, the feeding mechanism for conveying iron core coil located conveying mechanism side, and the plug -in mechanism for grabbing iron core coil insertion PCB above conveying mechanism and feeding mechanism;The end of iron core coil and PCB cooperation is provided with foolproof structure, and the foolproof structure includes positioning boss and positioning groove.The utility model solves the deviation of the existing plug -in machine when inserting iron core, and then it will affect product quality problem;And through the foolproof design of positioning boss and positioning groove cooperation, effectively avoid the deviation in the process of iron core plug -in, to improve production efficiency and insertion accuracy.
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Description

Technical Field

[0001] This utility model relates to the field of insertion machine technology, and in particular to an automatic PCB board insertion device. Background Technology

[0002] Iron cores are generally made of materials with high magnetic permeability, such as silicon steel sheets and amorphous alloys. They can effectively conduct magnetic energy. When an alternating current flows through the coil, an alternating magnetic flux is generated in the iron core, inducing a voltage or current in the secondary coil, thereby realizing functions such as voltage transformation and electromagnetic induction. In the PCB manufacturing process, iron core assemblies with pins (such as transformers and inductors) are usually automatically inserted into the PCB pad holes to achieve electromagnetic conversion and other functions.

[0003] Currently, there are two ways to insert the iron core into the PCB board. One way is to assemble the iron core and the wound coil into a transformer or inductor, and then fix the whole unit onto the PCB board using pins. The pins are located at the bottom of the transformer or inductor and are soldered to the pads on the PCB board to achieve electrical connection and mechanical fixation. The other way is to directly embed the iron core into the PCB board, which is called embedded core printed circuit board technology. This method can significantly reduce the surface area of ​​the printed circuit board and provide a good solution for the high density and miniaturization of power modules.

[0004] However, in existing technologies, when using a core insertion machine, core insertion deviations are easily caused by operational errors, incorrect core placement orientation, or machine positioning misalignment, thus affecting product quality and production efficiency. Currently, although some measures exist to prevent insertion deviations, they often suffer from complex structures, high costs, and poor error-proofing effects, failing to meet actual production needs. Utility Model Content

[0005] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide an automatic PCB board insertion device, which aims to solve the problem that existing insertion machines are prone to deviations when inserting iron cores, thus affecting product quality; and to effectively avoid deviations during the iron core insertion process through the foolproof design of the mechanical structure, thereby improving production efficiency and insertion accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic PCB board insertion device includes a frame, a conveying mechanism mounted on the frame for conveying PCB boards, a feeding mechanism located on one side of the conveying mechanism for conveying iron core coils, and an insertion mechanism located above the conveying mechanism and the feeding mechanism for gripping the iron core coils and inserting them into the PCB board. The end of the iron core coil that mates with the PCB board is provided with a foolproof structure, which includes a positioning boss and a positioning groove. The positioning boss is composed of a first boss and a second boss, which are offset at the bottom of the iron core coil, and the shapes and sizes of the first and second bosses are different. The positioning groove is located on the PCB board corresponding to the positions of the first and second bosses, and is composed of a first groove and a second groove. The shape and size of the first groove match the shape and size of the first boss, and the shape and size of the second groove match the shape and size of the second boss.

[0008] Preferably, the first boss and the second boss are asymmetrical structures, and the first boss is a rectangular boss and the second boss is a trapezoidal boss.

[0009] Preferably, the conveying mechanism includes a conveyor line arranged along the length of the frame and a positioning fixture arranged on the conveyor line for supporting PCB boards. The two ends of the conveyor line pass through laterally, and a pressure plate assembly for fixing the position of the PCB board is provided on one side of the conveyor line. The positioning fixture is slidably connected to the conveyor line, and an installation groove for transferring multiple PCB boards is opened on the top of the positioning fixture.

[0010] Preferably, the positioning fixture has positioning guide grooves for error prevention design on the four edges of the mounting groove. The positioning guide grooves are located on the side where the iron core coil is inserted into the PCB board, and the positioning guide grooves are rectangular or cylindrical structures.

[0011] Preferably, the pressure plate assembly includes a pressure plate, a linkage shaft, and a gear and rack transmission box. The pressure plate is set perpendicular to the PCB board, and both ends of the pressure plate are connected to the linkage shaft for transmission. The linkage shaft is set across the top of the conveyor line, and one end of the linkage shaft is linked to the gear and rack transmission box for transmission. The gear and rack transmission box is fixed to one side of the conveyor line.

[0012] Preferably, the feeding mechanism includes a storage rack, a chute seat located on one side of the storage rack, and a pulley drive assembly for driving the chute seat to convey iron core coils. The storage rack contains multiple trays for loading iron core coils, and a lifting assembly is driven to the bottom of the storage rack. The chute seat is set at the same height as the conveying mechanism, and a feeding chute is provided at the top of the chute seat, extending to one side of the conveying line. The pulley drive assembly is located at both ends of the feeding chute and is driven to the feeding chute.

[0013] Preferably, the insertion mechanism consists of multiple material-picking claws and a clamping cylinder. One end of the material-picking claw is connected to the clamping cylinder for transmission, and the other end is provided with a guide post adapted to the positioning guide groove. The guide post is connected to the positioning guide groove.

[0014] Preferably, the insertion mechanism is connected to the frame by a multi-axis drive mechanism that moves along the X, Y, and Z axes. The multi-axis drive mechanism is used to drive the insertion mechanism to move between the feeding mechanism and the conveying mechanism, so that the insertion mechanism can insert components at various positions on the PCB board.

[0015] In summary, the beneficial effects of this utility model are as follows:

[0016] This invention effectively prevents insertion errors caused by operational mistakes, incorrect core placement, or machine positioning deviations by incorporating anti-mistake components on the iron core coil and PCB board. The combination of asymmetrical positioning bosses and positioning grooves ensures that the core can be inserted smoothly only when it is correctly positioned and aligned with the PCB board. This method effectively guarantees product quality stability, reduces rework and scrap rates due to incorrect insertion, significantly improves production efficiency and core insertion accuracy, and features a reasonable structural design, controllable cost, and excellent practicality and economy. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the automatic PCB board insertion device of this utility model;

[0018] Figure 2 This is a top view of the automatic PCB board insertion device of this utility model;

[0019] Figure 3 This is a schematic diagram of the conveying mechanism and the insertion mechanism in this utility model;

[0020] Figure 4 yes Figure 3 Enlarged view of the structure at point a;

[0021] Figure 5 This is a schematic diagram of the feeding mechanism and the visual inspection mechanism in this utility model;

[0022] Figure 6 This is a structural schematic diagram of the positioning fixture and PCB board of this utility model.

[0023] Explanation of the reference numerals in the figure:

[0024] 1. Frame; 2. Conveying mechanism; 21. Conveyor line; 22. Positioning fixture; 221. Mounting slot; 222. Positioning guide slot; 3. Feeding mechanism; 31. Storage rack; 311. Pallet; 32. Slide seat; 321. Feeding slide; 33. Belt pulley drive assembly; 34. Lifting assembly; 4. Insertion mechanism; 41. Picking gripper; 411. Guide column; 42. Clamping cylinder; 5. Iron core coil; 51. Positioning boss; 511 5. First boss; 5. Second boss; 6. PCB board; 6. Positioning groove; 6. First groove; 6. Second groove; 7. Pressure plate assembly; 7. Pressure plate; 7. Linkage shaft; 7. Gear and rack transmission box; 8. Multi-axis drive mechanism; 8. Support frame; 8. X-axis drive assembly; 8. Y-axis drive assembly; 8. Z-axis drive assembly; 9. Vision inspection mechanism; 9. Industrial camera; 9. Light source system. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0026] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0027] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0028] The following is in conjunction with the appendix Figure 1-6 The present invention provides a more detailed description of an embodiment of an automatic PCB board insertion device.

[0029] An automatic PCB board insertion device, such as Figure 1 and Figure 6 As shown, the system includes a frame 1, a conveying mechanism 2 mounted on the frame 1 for conveying a PCB board 6, a feeding mechanism 3 located on one side of the conveying mechanism 2 for conveying an iron core coil 5, and an insertion mechanism 4 located above the conveying mechanism 2 and the feeding mechanism 3 for gripping the iron core coil 5 and inserting it into the PCB board 6. One end of the iron core coil 5 that mates with the PCB board 6 is provided with a foolproof structure, which includes a positioning boss 51 and a positioning groove 61. The positioning boss 51 consists of a first boss 511 and a second boss 512, which are offset at the bottom of the iron core coil 5. The shapes and sizes of the first boss 511 and the second boss 512 are different. The positioning groove 61 is located on the PCB board 6 corresponding to the positions of the first boss 511 and the second boss 512. The positioning groove 61 consists of a first groove 611 and a second groove 612, where the shape and size of the first groove 611 match the shape and size of the first boss 511, and the shape and size of the second groove 612 match the shape and size of the second boss 512.

[0030] Specifically, throughout the assembly process, the error-proof component, through the cooperation of the asymmetrical positioning boss 51 and the positioning groove 52, effectively prevents insertion deviations caused by operational errors, incorrect placement of the iron core coil, or positioning deviations of the insertion machine. In this way, the insertion device effectively avoids deviations during the iron core coil insertion process, ensuring product quality stability, reducing rework and scrap rates due to insertion errors, significantly improving production efficiency and iron core insertion accuracy. Furthermore, its reasonable structural design and controllable cost make it highly practical and economical.

[0031] In this embodiment, as Figure 4 As shown, the first boss 511 and the second boss 512 have an asymmetrical structure, and the first boss 511 is a rectangular boss, while the second boss 512 is a trapezoidal boss.

[0032] Specifically, the first boss 511 and the second boss 512 are integrally molded onto the bottom of the iron core coil 5 using injection molding. The positioning groove 61 on the PCB board is machined by a CNC milling machine. After the copper foil layer of the substrate is etched, the corresponding groove is milled out using a milling cutter to ensure that the positioning boss 51 is flush with the board surface after being embedded. The edges of the positioning groove 61 are rounded to avoid stress concentration that could cause the substrate to crack.

[0033] In this embodiment, as Figure 3As shown, the conveying mechanism 2 includes a conveyor line 21 arranged along the length of the frame 1 and a positioning fixture 22 arranged on the conveyor line 21 for supporting PCB boards 6. The two ends of the conveyor line 21 pass through laterally, and a pressure plate assembly 7 for fixing the position of the PCB board 6 is arranged on one side of the conveyor line 21. The pressure plate assembly 7 includes a pressure plate 71, a linkage shaft 72, and a gear and rack transmission box 73. The pressure plate 71 is arranged perpendicular to the PCB board 6, and both ends of the pressure plate 71 are connected to the linkage shaft 72. The linkage shaft 72 is arranged across the top of the conveyor line 21, and one end of the linkage shaft 72 is linked to the gear and rack transmission box 73. The gear and rack transmission box 73 is fixed to one side of the conveyor line 21. The positioning fixture 22 is slidably connected to the conveyor line 21, and a mounting groove 221 for transferring multiple PCB boards 6 is opened on the top of the positioning fixture 22. The positioning fixture 22 is provided with positioning guide grooves 222 for error prevention design around the four edges of the mounting groove 221. The positioning guide grooves 222 are located on the side where the iron core coil 5 is inserted into the PCB board 6, and the positioning guide grooves 222 are rectangular or cylindrical structures.

[0034] Specifically, the conveyor mechanism 2 adopts a double-rail belt conveyor line 21, and the distance between the two belts can be adjusted according to the width of the PCB board. Aluminum alloy guide rails are installed on both sides of the conveyor line 21, with elastic nylon guards installed on the inner side of the guide rails to provide flexible restraint on the edges of the PCB board 6, preventing damage to the board surface from hard collisions. The positioning fixture 22 is a detachable aluminum alloy substrate with a black anodized surface to reduce glare interference with the vision system. The mounting groove 221 on the positioning fixture 22 is CNC milled, and the groove depth is designed according to the thickness of the PCB board 6. Positioning guide grooves 222 are opened around the four edges of the mounting groove 221. The guide groove on the side closest to the insertion station is rectangular, and the other three sides are semi-circular, working in conjunction with the guide post 411 of the insertion mechanism 4 to achieve multi-directional foolproof positioning. A dovetail groove guide rail is provided at the bottom of the positioning fixture 22, which quickly engages with the slider seat of the conveyor line 21, facilitating the replacement of fixtures of different specifications to accommodate various PCB board 6 models. The gear and rack transmission box 73 has a built-in double gear, with racks on both sides meshing with the rack rod at the bottom of the pressure plate 71. When the servo motor drives the gear to rotate, the two pressure plates 71 move synchronously towards the center. Silicone buffer pads are installed at the ends of the pressure plates 71, which generate elastic deformation when they contact the PCB board 6, ensuring both fixing force and preventing damage to the board surface. The stroke of the pressure plates 71 is detected by a magnetic proximity switch, and the motor automatically stops when it reaches the set position.

[0035] In this embodiment, as Figure 5As shown, the feeding mechanism 3 includes a storage rack 31, a chute seat 32 located on one side of the storage rack 31, and a pulley drive assembly 33 for driving the chute seat 32 to convey the iron core coil 5. The storage rack 31 contains a plurality of trays 311 for loading the iron core coil 5, and the bottom end of the storage rack 31 is drivenly connected to a lifting assembly 34. The chute seat 32 is set at the same height as the conveying mechanism 2, and the top end of the chute seat 32 is provided with a feeding chute 321, which extends to one side of the conveying line 21. The pulley drive assembly 33 is located at both ends of the feeding chute 321, and the pulley drive assembly 33 is drivenly connected to the feeding chute 321.

[0036] Specifically, the lifting component 34 in the feeding mechanism 3 pushes the tray 311 containing the iron core coil 5 in the storage rack 31 upwards in sequence. The belt pulley drive component 33 drives the iron core coil 5 in the slide seat 32 to slide along the feeding slide 321 to the designated position. At this time, the conveyor line 21 of the conveying mechanism 2 drives the positioning fixture 22 to move. The mounting slot 221 on the positioning fixture 22 carries the PCB board 6 forward. When the PCB board 6 reaches the insertion station, the gear and rack transmission box 73 of the pressure plate component 7 drives the linkage shaft 72 to rotate. The linkage shaft 72 drives the pressure plate 71 to press down, and fixes the PCB board firmly on the positioning fixture 22.

[0037] The storage rack 31 is designed as a multi-layer drawer structure, with each layer capable of holding 10 standard trays 311. The chute seat 32 is made of L-shaped aluminum alloy profile, and the feeding chute 321 has a trapezoidal cross-section to ensure that the iron core coil 5 slides in a single posture (bottom down). The bottom surface of the chute is inclined at 15°, utilizing gravity to assist feeding. At the same time, a damping rubber strip is set in the middle of the chute to slow down the sliding speed of the iron core coil 5 and prevent collision and accumulation. The pulley drive assembly 33 uses a micro geared motor and a synchronous belt. The synchronous belt has equidistant V-shaped grooves on its surface, which cooperate with the positioning boss 51 at the bottom of the iron core coil 5 to achieve intermittent and precise feeding. The lifting assembly 34 includes a sliding seat, a telescopic rod, and a lifting cylinder. The sliding seat has a linear slide rail, and the storage rack 31 is slidably connected to the linear slide rail. One end of the telescopic rod is fixedly connected to the sliding seat, and the other end is drivenly connected to the lifting cylinder, so that it can drive the telescopic rod to extend upward under the action of the lifting cylinder, thereby lifting the storage rack 31 on the sliding seat to a suitable loading position. The cylinder gripper then takes out the iron core coil 5 placed in the tray 311 and transfers it to the loading chute 321 for loading.

[0038] In this embodiment, as Figure 3 , 4 As shown, the insertion mechanism 4 consists of multiple material picking claws 41 and clamping cylinders 42. One end of the material picking claw 41 is connected to the clamping cylinder 42 for transmission, and the other end is provided with a guide post 411 that is compatible with the positioning guide groove 222. The guide post 411 is connected to the positioning guide groove 222.

[0039] Specifically, the insertion mechanism 4 moves above the feeding mechanism 3 under the drive of the multi-axis drive mechanism 8, and the picking gripper 41 picks up the iron core coil 5 under the action of the clamping cylinder 42. Because the end of the iron core coil 5 that mates with the PCB board 6 is equipped with a foolproof component, the first protrusion 511 and the second protrusion 512 offset at the bottom of the iron core coil 5 can only accurately match and embed with the corresponding first groove 611 and second groove 612 on the PCB board 6 when the orientation is correct. Simultaneously, the guide post 411 at the end of the picking gripper 41 can only smoothly insert into the positioning guide groove 222 on the positioning fixture 22 when the orientation of the iron core coil 5 is correct. This mechanically ensures that the iron core coil 5 can only approach the PCB board 6 in the correct orientation and position; if the orientation is incorrect, mating cannot be achieved.

[0040] The material-grabbing gripper 41 is a pneumatic finger gripper with an elastic rubber pad on its inner side to increase friction and prevent the iron core coil 5 from slipping. A guide post 411 is vertically mounted at the end of the gripper 41. The guide post 411 is made of stainless steel cylindrical pin and forms a clearance fit with the guide groove of the positioning fixture 22. When the gripper 41 grasps the iron core coil 5, the guide post 411 must first be inserted into the guide groove for coarse positioning; otherwise, the gripper 41 cannot reach the insertion height, thus mechanically ensuring correct orientation.

[0041] In this embodiment, as Figure 2 As shown, a multi-axis drive mechanism 8 that moves along the X, Y and Z axes is connected to the insertion mechanism 4 and the frame 1. The multi-axis drive mechanism 8 is used to drive the insertion mechanism 4 to move between the feeding mechanism 3 and the conveying mechanism 2 so that the insertion mechanism 4 can insert components at various positions on the PCB board 6.

[0042] Specifically, the multi-axis drive mechanism 8 includes a support frame 81, an X-axis drive assembly 82, a Y-axis drive assembly 83, and a Z-axis drive assembly 84. The Y-axis drive assembly 83 is connected to the top of the support frame 81, and the movement trajectory of the movable end of the Y-axis drive assembly 83 is perpendicular to the conveying direction of the conveyor line 21. The X-axis drive assembly 82 is located at the movable end of the Y-axis moving mechanism, and the movement trajectory of the movable end of the X-axis drive assembly 82 is parallel to the conveying direction of the conveyor line 21. The Z-axis drive assembly 84 is located at the movable end of the X-axis moving mechanism.

[0043] The multi-axis drive mechanism 8 employs a three-axis Cartesian coordinate robot (XYZ axis). The X-axis (lateral) and Y-axis (vertical) utilize ball screws and linear guides, while the Z-axis (vertical axis) uses a pneumatic slide. AC servo motors are used for the drive motors, paired with absolute encoders to achieve closed-loop position control. The three-axis Cartesian coordinate robot control system uses a PLC and motion control module, communicating with a host computer via Ethernet. Multiple sets of plug-in coordinates can be preset, enabling automatic multi-point plug-in on complex PCB boards.

[0044] It is worth mentioning that, such as Figure 1 As shown, a vision inspection mechanism 9 is also provided on the frame 1. The vision inspection mechanism 9 includes an industrial camera 91 and a light source system 92 installed above the working area of ​​the frame 1. The industrial camera 91 is fixed on the frame 1 by a fixed bracket and is used to perform image recognition on the shape, pin position or positioning boss 51 features of the iron core coil 5 and compare it with a preset standard image. The light source system 92 adopts a ring shadowless light source to provide uniform illumination for the high-definition industrial camera 91.

[0045] The process for core insertion molding of the PCB board 6 of this utility model is as follows:

[0046] Material preparation: The trays 311 filled with iron core coils 5 are placed into the storage rack 31 in sequence. The lifting component 34 automatically lifts the bottom tray 311 to the inlet of the slide seat 32. At the same time, the positioning fixture 22 moves to the material loading station with the conveyor line 21. The operator puts the PCB board into the mounting slot 221 of the fixture. The conveyor line 21 drives the fixture to move towards the insertion station.

[0047] Conveying the iron core coil 5: The pulley drive assembly 33 starts and uses the synchronous belt to push the iron core coil 5 one by one to the picking position at the end of the feeding chute 321; at this time, the Z-axis drive assembly 84 of the insertion mechanism 4 descends, and the picking claw 41 opens to a distance greater than 2mm of the width of the iron core coil 5, smoothly grabs the iron core coil 5 and then rises to reset.

[0048] Misalignment and insertion: The insertion mechanism 4 moves along the X / Y axis to the top of the PCB board, and the guide post 411 slowly descends, aligned with the rectangular guide groove of the positioning fixture 22. When the guide post 411 is inserted into the groove and the positioning boss 51 at the bottom of the iron core coil 5 initially contacts the positioning groove 61 on the PCB board 6, the Z-axis stops descending, and the gripper vibrates slightly to ensure that the positioning boss 51 is fully embedded in the positioning groove 61.

[0049] Re-inspection: After insertion is completed, the gripper releases the iron core coil 5, the Z-axis rises to a safe height, and the insertion mechanism 4 returns to the loading position to grab the next iron core coil 5. At the same time, the conveyor line 21 moves forward one station, and the inserted PCB board 6 enters the next process along with the fixture.

[0050] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic PCB board insertion device, comprising a frame, a conveying mechanism disposed on the frame for conveying PCB boards, a feeding mechanism located on one side of the conveying mechanism for conveying iron core coils, and an insertion mechanism located above the conveying mechanism and the feeding mechanism for gripping the iron core coils and inserting them into the PCB board; characterized in that, The end of the iron core coil that mates with the PCB board is provided with a foolproof structure. The foolproof structure includes a positioning boss and a positioning groove. The positioning boss is composed of a first boss and a second boss, which are offset from each other at the bottom of the iron core coil. The first boss and the second boss have different shapes and sizes. The positioning groove is provided on the PCB board corresponding to the positions of the first boss and the second boss. The positioning groove is composed of a first groove and a second groove. The first groove matches the shape and size of the first boss, and the second groove matches the shape and size of the second boss.

2. The PCB board automatic insertion device according to claim 1, characterized in that, The first boss and the second boss are asymmetrical structures, and the first boss is a rectangular boss and the second boss is a trapezoidal boss.

3. The PCB board automatic insertion device according to claim 1, characterized in that, The conveying mechanism includes a conveyor line arranged along the length of the frame and a positioning fixture arranged on the conveyor line for supporting PCB boards. The two ends of the conveyor line pass through laterally, and a pressure plate assembly for fixing the position of the PCB board is provided on one side of the conveyor line. The positioning fixture is slidably connected to the conveyor line, and an installation groove for transferring multiple PCB boards is opened on the top of the positioning fixture.

4. The automatic PCB board insertion device according to claim 3, characterized in that, The positioning fixture has positioning guide grooves for error prevention on the four edges of the mounting groove. The positioning guide grooves are located on the side where the iron core coil is inserted into the PCB board, and the positioning guide grooves are rectangular or cylindrical in shape.

5. The automatic PCB board insertion device according to claim 3, characterized in that, The pressure plate assembly includes a pressure plate, a linkage shaft, and a gear and rack transmission box. The pressure plate is set perpendicular to the PCB board, and both ends of the pressure plate are connected to the linkage shaft for transmission. The linkage shaft is set across the top of the conveyor line, and one end of the linkage shaft is linked to the gear and rack transmission box for transmission. The gear and rack transmission box is fixed to one side of the conveyor line.

6. The automatic PCB board insertion device according to claim 3, characterized in that, The feeding mechanism includes a storage rack, a chute seat located on one side of the storage rack, and a pulley drive assembly for driving the chute seat to convey iron core coils. The storage rack contains multiple trays for loading iron core coils, and a lifting assembly is driven to the bottom of the storage rack. The chute seat is set at the same height as the conveying mechanism, and a feeding chute is provided at the top of the chute seat, extending to one side of the conveying line. The pulley drive assembly is located at both ends of the feeding chute and is driven to the feeding chute.

7. The automatic PCB board insertion device according to claim 4, characterized in that, The insertion mechanism consists of multiple material-picking claws and clamping cylinders. One end of the material-picking claw is connected to the clamping cylinder for transmission, and the other end is provided with a guide post that is adapted to the positioning guide groove. The guide post is connected to the positioning guide groove.

8. The automatic PCB board insertion device according to claim 7, characterized in that, The insertion mechanism is connected to the frame by a multi-axis drive mechanism that moves along the X, Y, and Z axes. The multi-axis drive mechanism is used to drive the insertion mechanism to move between the feeding mechanism and the conveying mechanism, so that the insertion mechanism can insert components at various positions on the PCB board.