An inductor automatic polarity identification feeding device

Abstract

The present application relates to the technical fields of automatic production and detection of electronic components, and particularly relates to an inductor automatic polarity identification feeding device. The inductor automatic polarity identification feeding device comprises a workbench plate, a vibrating disc, a conveying track, an adjusting column, a lower-view industrial camera and an upper-view industrial camera. The present application realizes the synchronous detection of the top surface and bottom surface features of the inductor by setting a light-transmitting observation window on the conveying track and cooperating with the upper and lower dual-view angle shooting. This structure eliminates the identification blind area caused by the unfixed polarity identification position or the blurred surface identification under a single view angle, improves the accuracy and coverage of the polarity identification, and through the setting of the multi-degree-of-freedom adjusting assembly and locking mechanism, the position of the detection camera can be flexibly fine-tuned according to the size of different specifications of inductors. This structure improves the compatibility of the equipment for various types of products, and when the production materials are replaced, the hardware does not need to be disassembled, thereby shortening the line-changing debugging time.

Description

Technical Field

[0001] This invention relates to the field of automated production and testing technology for electronic components, and in particular to an automatic polarity identification and feeding device for inductors. Background Technology

[0002] Inductors (especially surface mount inductors) are core components in electronic circuits. In automated surface mount manufacturing processes, inductors have strict polarity requirements; if the polarity is reversed, it will directly lead to circuit malfunction or even damage.

[0003] Currently, traditional processing methods and existing technologies have the following shortcomings in the inductor loading and polarity detection stages:

[0004] Single identification dimension and prone to misjudgment: Traditional identification devices mostly use a single camera for detection. Because the polarity markings of some inductors are located at the bottom, or the top silkscreen is unclear due to lighting, wear and tear, a single perspective often cannot accurately identify them, which can easily cause defective products with reversed polarity to be mixed into the qualified product tray.

[0005] Poor compatibility and adjustment flexibility: In existing detection devices, the mounting structure of the camera and light source is usually fixed. When changing inductors of different sizes and thicknesses on the production line, operators need to remove bolts and readjust the camera focus and illumination angle. This adjustment method is not only cumbersome and time-consuming, but also makes it difficult to guarantee the accuracy of repeatable positioning, seriously affecting the changeover efficiency of the production line.

[0006] Low integration of feeding and sorting: Existing feeding mechanisms are often only responsible for conveying, lacking real-time cleaning and abnormal rejection functions. Dust on the conveyor track may interfere with the vision system's recognition, and after a polarity error is detected, manual removal is usually required, making it impossible to achieve high-speed, continuous automated feeding and sorting.

[0007] Therefore, it is necessary to provide an automatic polarity identification and feeding device for inductors to solve the above-mentioned technical problems. Summary of the Invention

[0008] To solve the above-mentioned technical problems, the present invention provides an automatic polarity identification and feeding device for inductors.

[0009] The automatic polarity identification and feeding device for inductors provided by the present invention includes: a worktable, a vibratory feeder, a conveyor rail, an adjusting column, a downward-viewing industrial camera, and an upward-viewing industrial camera. Support legs are fixedly connected to the bottom of the worktable. A vibratory feeder is fixedly installed at the end of the upper surface of the worktable. The conveyor rail is fixedly connected to the upper surface of the worktable via a rail support. The inlet end of the conveyor rail is connected to the outlet of the vibratory feeder. The bottom end of the adjusting column is fixedly connected to the worktable. The downward-viewing industrial camera is positioned below the conveyor rail, and the upward-viewing industrial camera is mounted on the adjusting column via an adjusting assembly.

[0010] Preferably, a light-transmitting observation window is provided through the bottom surface of the conveying track, and a U-shaped connecting frame is fixedly connected to the outer wall of the adjusting column. The U-shaped connecting frame extends horizontally and is located on the outer periphery of the light-transmitting observation window.

[0011] Preferably, a lower camera light shield box located inside the U-shaped connecting frame is fixedly connected to the upper surface of the workbench plate, and a bottom fixing plate is fixedly connected to the inner bottom surface of the lower camera light shield box. The lower-view industrial camera is fixedly installed on the bottom fixing plate, and the lens of the lower-view industrial camera is vertically facing the light-transmitting observation window.

[0012] Preferably, a horizontally arranged transverse adjustment slide rail is fixedly connected to the U-shaped connecting frame, and a lateral locking slide sleeve is slidably sleeved on the transverse adjustment slide rail, with a locking element provided on the outer side of the lateral locking slide sleeve.

[0013] Preferably, a longitudinal adjusting sleeve is slidably fitted on the adjusting column, and a threaded hole is provided through the longitudinal adjusting sleeve in the wall thickness direction. A locking knob is screwed into the threaded hole, and the end of the locking knob passes through the longitudinal adjusting sleeve and abuts against the outer wall of the adjusting column.

[0014] Preferably, the outer wall of the longitudinal adjusting sleeve is fixedly connected to a horizontally extending transverse connecting rod, and the end of the transverse connecting rod is fixedly connected to the upward-looking industrial camera.

[0015] Preferably, a ring light source is fixedly connected to the periphery of the lens of the upward-looking industrial camera, and the illumination surface of the ring light source faces the conveying surface of the conveying track.

[0016] Preferably, an air nozzle mounting bracket is fixedly connected to the outer wall of the conveying track, an air blowing nozzle is fixedly connected to the air nozzle mounting bracket, and an air blowing control valve is fixedly installed on the upper surface of the workbench. The air blowing control valve is connected to the air blowing nozzle through an air pipe.

[0017] Preferably, the bottom end of the support leg is threaded with an adjustable foot.

[0018] Preferably, a control display screen is fixedly installed on the upper surface of the workbench, and the control display screen is electrically connected to the downward-viewing industrial camera, the upward-viewing industrial camera, and the air blowing control valve.

[0019] Compared with related technologies, the automatic polarity identification and feeding device for inductors provided by the present invention has the following advantages:

[0020] 1. This invention achieves simultaneous detection of the top and bottom features of an inductor by setting a light-transmitting observation window on the conveyor track and combining it with dual-view imaging from both above and below. This structure eliminates blind spots caused by inconsistent polarity marking positions or blurred surface markings under a single viewpoint, thus improving the accuracy and coverage of polarity identification.

[0021] 2. This invention, by incorporating multi-degree-of-freedom adjustment components and a locking mechanism, allows for flexible and fine-tuning of the detection camera's position according to the dimensions of inductors of different specifications. This structure enhances the equipment's compatibility with various product models, eliminating the need for hardware disassembly when changing production materials and shortening line changeover and debugging time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of the automatic polarity identification and feeding device for inductors provided by the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the lower camera light shield box in this invention;

[0024] Figure 3 for Figure 1 A magnified structural diagram of point A in the middle.

[0025] The following are labeled in the diagram: 1. Workbench; 2. Support leg; 3. Adjustable foot; 4. Track support; 5. Control display screen; 6. U-shaped connecting frame; 7. Lower camera light shield; 8. Vibratory feeder; 9. Conveyor track; 10. Air blowing control valve; 11. Air nozzle mounting bracket; 12. Air blowing nozzle; 13. Inductor; 14. Light-transmitting observation window; 15. Downward-viewing industrial camera; 16. Bottom fixed base plate; 17. Upward-viewing industrial camera; 18. Ring light source; 19. Longitudinal adjustment slide sleeve; 20. Locking knob; 21. Lateral connecting rod; 22. Adjusting column; 23. Lateral locking slide sleeve; 24. Lateral adjustment slide rail. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] like Figures 1 to 3 As shown, this embodiment provides an automatic polarity identification and feeding device for inductors, including a support frame, a feeding and conveying assembly, an adjusting support assembly, a vision inspection assembly, and an air-blowing rejection assembly. The worktable 1 serves as the mounting base for the entire machine, and support legs 2 are fixedly connected to the four corners below it. The bottom ends of the support legs 2 are connected to adjusting feet 3 by threaded engagement.

[0029] It should be noted that by adjusting the extension length of the foot 3 relative to the support leg 2 through screw rotation, the error of the ground level can be compensated, ensuring that the worktable 1 is in a horizontal state, thereby avoiding material accumulation or jumping caused by the center of gravity shift during the feeding process of the vibratory feeder 8.

[0030] A vibratory feeder 8 is fixedly installed on the left end of the upper surface of the workbench 1. A horizontally extending conveyor track 9 is also fixedly connected to the upper surface of the workbench 1 through multiple track supports 4. The inlet end of the conveyor track 9 is connected to the outlet of the vibratory feeder 8. The inductor 13 is output from the vibratory feeder 8 and enters the conveyor track 9 for orderly conveying.

[0031] It should be noted that the vibratory feeder 8 performs preliminary rectification of the disordered inductors 13, so that the inductors 13 are arranged in an orderly manner as they enter the conveying track 9, providing a stable material flow basis for subsequent polarity identification and automated feeding.

[0032] The bottom end of the adjusting column 22 is vertically fixed on the workbench 1, and a U-shaped connecting frame 6 is fixedly connected to one side wall of the adjusting column 22. A light-transmitting observation window 14 is embedded in the bottom surface of the conveyor track 9, and the U-shaped connecting frame 6 extends horizontally and surrounds the outer periphery of the light-transmitting observation window 14. A lower camera light shield 7 is fixed on the workbench 1 below the conveyor track 9, and the lower camera light shield 7 is located inside the U-shaped connecting frame 6.

[0033] It should be noted that the U-shaped connecting frame 6 surrounds the light-transmitting observation window 14, providing structural reinforcement for the surrounding components without contacting the conveyor track 9. Meanwhile, the design of the lower camera light shield 7 isolates stray ambient light from interfering with visual inspection, improving the contrast and clarity of the lower image.

[0034] A bottom fixing plate 16 is fixedly connected to the bottom surface of the lower camera light shield box 7, and a downward-viewing industrial camera 15 is fixedly connected to the upper surface of the bottom fixing plate 16. The lens axis of the downward-viewing industrial camera 15 passes through the top opening of the lower camera light shield box 7 and is perpendicularly aligned with the light-transmitting observation window 14.

[0035] It should be noted that when the inductor 13 passes through the light-transmitting observation window 14, the downward-looking industrial camera 15 can pass through the light-transmitting observation window 14 to obtain the pin features or polarity markings on the bottom of the inductor 13, thereby achieving accurate identification of inductors 13 that have no obvious markings on the surface or have special polarity features on the bottom.

[0036] A horizontal adjusting slide rail 24 is fixedly connected to one side of the adjusting column 22, and a lateral locking slide sleeve 23 is slidably fitted on the horizontal adjusting slide rail 24. A vertical adjusting slide sleeve 19 is also slidably fitted on the adjusting column 22, and the vertical adjusting slide sleeve 19 is located above the U-shaped connecting frame 6. A threaded hole is provided through the wall thickness direction of the vertical adjusting slide sleeve 19, and a locking knob 20 is screwed into the threaded hole. The end of the locking knob 20 passes through the vertical adjusting slide sleeve 19 and abuts against the outer wall of the adjusting column 22. A horizontally extending transverse connecting rod 21 is fixedly connected to the outer wall of the vertical adjusting slide sleeve 19, and an upward-looking industrial camera 17 is fixedly connected to the end of the transverse connecting rod 21.

[0037] It should be noted that by sliding the lateral locking sleeve 23 on the horizontal adjusting slide rail 24 and sliding the longitudinal adjusting sleeve 19 up and down along the adjusting column 22, the spatial position of the upward-looking industrial camera 17 can be finely adjusted in the horizontal and vertical directions. Combined with the locking knob 20, this device can adapt to inductors 13 of different shapes and thicknesses, ensuring that the camera is always in the optimal focus detection position.

[0038] A ring light source 18 is fixedly covered at the bottom lens of the upward-viewing industrial camera 17, and the illumination surface of the ring light source 18 faces the conveying surface of the conveyor rail 9. A control display screen 5 is also fixedly installed on the upper surface of the worktable 1, and the control display screen 5 is connected to the downward-viewing industrial camera 15 and the upward-viewing industrial camera 17.

[0039] It should be noted that the ring light source 18 provides a uniform, shadowless illumination environment for the upward-viewing industrial camera 17, eliminating noise caused by reflections on the surface of the inductor 13. The control display screen 5 displays the dual-view recognition images and detection results in real time, realizing visualized monitoring of the detection process.

[0040] An air nozzle mounting bracket 11 is fixedly connected to the outer wall of the conveying track 9, and an air blowing nozzle 12 is fixedly connected to the air nozzle mounting bracket 11. The axis of the air blowing nozzle 12 points to the inner side of the conveying track 9, and the air blowing nozzle 12 is connected to the air blowing control valve 10 fixed on the workbench plate 1 through an air pipe. The air blowing control valve 10 is electrically connected to the control system.

[0041] It should be noted that when the upward-viewing industrial camera 17 or the downward-viewing industrial camera 15 detects an inductor 13 with reversed polarity or appearance defects, the control system sends an action command to the air blowing control valve 10, which blows the inductor 13 away from the conveyor track 9 by the instantaneous high-pressure airflow ejected through the air blowing nozzle 12. This non-contact rejection method has a fast response speed and avoids secondary scratches caused by the mechanical lever to the qualified inductor 13.

[0042] The working principle of the automatic polarity identification and feeding device for inductors provided by this invention is as follows:

[0043] First, the bulk inductors 13 are fed into the vibratory feeder 8. After the device is started, the vibratory feeder 8 uses vibration logic to initially orient and sort the inductors 13, and then outputs them sequentially to the feed inlet of the conveying track 9. Under the limit of the conveying track 9, the inductors 13 slide smoothly along the track towards the detection area, and the track support 4 ensures the structural stability during the conveying process.

[0044] When the inductor 13 passes through the light-transmitting observation window 14 at the bottom of the conveyor track 9, the sensor detects the material position and triggers a detection command. At this time, the downward-viewing industrial camera 15, located on the bottom fixed base plate 16 inside the lower camera light shield box 7, captures the bottom image information of the inductor 13 through the light-transmitting observation window 14; at the same time, the upward-viewing industrial camera 17, located above, captures the top image information of the inductor 13 with the supplementary lighting assistance of the ring light source 18.

[0045] During initial setup or line changeover for different material specifications, operators precisely adjust the imaging center and focal length of the upward-looking industrial camera 17 by sliding the lateral locking sleeve 23 laterally on the horizontal adjusting slide rail 24 and raising and lowering the vertical adjusting sleeve 19 on the adjusting column 22, in conjunction with the spatial extension of the horizontal connecting rod 21. After adjustment, the sliding components are fixed to the adjusting column 22 by the threaded engagement of the locking knob 20.

[0046] The acquired top and bottom double-sided image signals are transmitted to the control system and displayed in real time on the control display screen 5. The control system extracts features from the image based on the built-in polarity recognition algorithm and compares them with the reference polarity direction. If the polarity direction of the current inductor 13 is determined to be unqualified, the control system immediately opens the air blowing control valve 10, and compressed air is instantly ejected through the air blowing nozzle 12 on the air nozzle mounting bracket 11, blowing the inductor 13 away from the conveyor track 9 into the waste collection area. If the polarity is determined to be qualified, the inductor 13 continues to slide along the conveyor track 9 to the loading station at the end.

[0047] In summary, the automatic polarity identification and feeding device for inductors provided in this embodiment of the invention, through a stable support system consisting of a worktable 1, support legs 2, and adjustable feet 3, ensures the continuous and efficient output of individual inductors by the vibratory feeder 8 and the conveying track 9. The detection area combines a bottom-fixed imaging and a top multi-dimensional adjustment structure. A downward-viewing industrial camera 15, mounted on a bottom-fixed base plate 16 within the lower camera light shield box 7, accurately captures polarity codes through a light-transmitting observation window 14 at the bottom of the track. A U-shaped connecting frame 6 spatially reinforces the aforementioned structure. The top, through the displacement of the lateral locking sleeve 23 on the horizontal adjustment slide rail 24 and the raising and lowering of the vertical adjustment sleeve 19 along the adjustment column 22, combined with the threaded engagement of the locking knob 20, enables rapid focusing of the upward-viewing industrial camera 17 and the ring light source 18 for various material specifications. The end-of-line sorting component is controlled by the air blowing control valve 10 to activate the air blowing nozzle 12. Under the support of the air nozzle mounting bracket 11, abnormal materials are rejected in milliseconds. The entire process is fed back in a closed loop through the control display screen 5, which successfully solves the technical defects of traditional detection devices such as low compatibility and incomplete polarity recognition.

[0048] The electrical control system logic, image recognition and comparison algorithms, and sensor signal transmission protocols involved in this invention are all well-known and mature concepts in the field, and this invention does not consider them as innovative points. For those skilled in the art, any minor adjustments to the electrical control scheme based on actual process requirements, without departing from the mechanical structure principles of this invention, should be covered within the scope of protection of this invention.

Claims

1. An automatic polarity identification and feeding device for inductors, characterized in that, include: Workbench (1), with support legs (2) fixedly connected below the workbench (1); Vibratory feeder (8), the vibratory feeder (8) is fixedly installed at the end of the upper surface of the worktable (1). The conveying track (9) is fixedly connected to the upper surface of the workbench (1) by the track support (4), and the inlet end of the conveying track (9) is connected to the outlet of the vibrating plate (8). Adjustable column (22), the bottom end of which is fixedly connected to the workbench (1); A downward-viewing industrial camera (15) is disposed below the conveying track (9); An upward-viewing industrial camera (17) is mounted on the adjusting column (22) via an adjusting assembly.

2. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, The bottom surface of the conveying track (9) is provided with a light-transmitting observation window (14), and the outer wall of the adjusting column (22) is fixedly connected with a U-shaped connecting frame (6). The U-shaped connecting frame (6) extends horizontally and is located on the outer periphery of the light-transmitting observation window (14).

3. The automatic polarity identification and feeding device for inductors according to claim 2, characterized in that, The upper surface of the workbench (1) is fixedly connected to a lower camera light shield box (7) located inside the U-shaped connecting frame (6). The bottom surface of the lower camera light shield box (7) is fixedly connected to a bottom fixing plate (16). The lower-view industrial camera (15) is fixedly installed on the bottom fixing plate (16), and the lens of the lower-view industrial camera (15) is vertically facing the light-transmitting observation window (14).

4. The automatic polarity identification and feeding device for inductors according to claim 2, characterized in that, The U-shaped connecting frame (6) is fixedly connected to a horizontally arranged transverse adjustment slide rail (24), and a lateral locking slide sleeve (23) is slidably sleeved on the transverse adjustment slide rail (24), and a locking element is provided on the outer side of the lateral locking slide sleeve (23).

5. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, The adjusting column (22) is provided with a longitudinal adjusting sleeve (19). The longitudinal adjusting sleeve (19) has a threaded hole through it in the wall thickness direction. A locking knob (20) is screwed into the threaded hole. The end of the locking knob (20) passes through the longitudinal adjusting sleeve (19) and abuts against the outer wall of the adjusting column (22).

6. The automatic polarity identification and feeding device for inductors according to claim 5, characterized in that, The outer wall of the longitudinal adjusting sleeve (19) is fixedly connected to a horizontally extending transverse connecting rod (21), and the end of the transverse connecting rod (21) is fixedly connected to the upward-viewing industrial camera (17).

7. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, The lens of the upward-facing industrial camera (17) is fixedly connected to a ring light source (18), and the illumination surface of the ring light source (18) faces the conveying surface of the conveying track (9).

8. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, An air nozzle mounting bracket (11) is fixedly connected to the outer wall of the conveying track (9), and an air blowing nozzle (12) is fixedly connected to the air nozzle mounting bracket (11). An air blowing control valve (10) is fixedly installed on the upper surface of the workbench (1), and the air blowing control valve (10) is connected to the air blowing nozzle (12) through an air pipe.

9. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, The bottom end of the support leg (2) is threaded with an adjustable foot (3).

10. The automatic polarity identification and feeding device for inductors according to claim 1, characterized in that, A control display screen (5) is fixedly installed on the upper surface of the workbench (1). The control display screen (5) is electrically connected to the downward-viewing industrial camera (15), the upward-viewing industrial camera (17), and the air blowing control valve (10).

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