SMD LED chip sorting and reversing device

Abstract

The utility model relates to the technical field of SMD LED chips, in particular to a SMD LED chip sorting and reversing device which comprises a base, a first conveying track, a second conveying track and a reversing module, wherein the first conveying track and the second conveying track are arranged on the base in a mirror symmetry mode, and the reversing module is erected above the first conveying track and the second conveying track. The reversing module comprises a top seat fixed to the base, an annular through groove formed in the top of the top seat, a rotatable rotating seat embedded in the through groove through a bearing, at least six sets of lifting mechanisms distributed at the bottom of the rotating seat in the circumferential direction at equal angles, and rotatable adsorption seats arranged at the bottoms of the lifting mechanisms. A pneumatic sliding ring is arranged in the center of the top of the rotating seat, a vacuum generator is arranged at the bottom of the rotating seat, the output end of the vacuum generator is communicated with the pneumatic sliding ring, and a negative pressure pipe for providing suction force for the adsorption seat is arranged on the pneumatic sliding ring; the full-process automation of sorting and reversing of the SMD LED chips is realized, the labor force is reduced, and meanwhile, the efficiency is also improved.

Description

Technical Field

[0001] This utility model relates to the field of surface mount LED chip technology, and specifically discloses a surface mount LED chip sorting and reversing device. Background Technology

[0002] With the rapid development of modern industrial society, new high technologies are emerging in all walks of life. The country is now focusing on the development of new energy sources, and green, energy-saving and environmental protection have become the labels for the development of all walks of life in the new century. LED technology is developing rapidly in the field of electronic lighting technology. LED lighting has gradually become the best choice for new green lighting because LED is far superior to traditional lighting products in terms of light-emitting principle, energy saving and environmental protection.

[0003] Surface mount LED chips are a type of LED lighting and a widely used cold light source in the LED industry. With the expansion of applications, the market demand is increasing, and the production volume in production workshops is also expanding. As production batches increase, how to better and more conveniently sort the processed products has become an issue that production workshops must consider. Because surface mount LED chips have electrical orientation, the orientation of the LED chips is often taken into account during the sorting process.

[0004] In existing technologies, in the sorting and reversing equipment for surface-mount LED chips, after the chips pass through the detection station to check their orientation, they are directly conveyed to the loading fixture block. In order to ensure that all the chips conveyed to the loading fixture block have the same orientation, it is necessary to manually reverse the orientation of the chips in the grooves on the loading fixture block. This reversal process not only increases labor but also reduces efficiency; this is the shortcoming of existing technologies. Utility Model Content

[0005] This invention proposes a chip sorting and reversing device for surface-mount LED chips, which realizes full automation of the chip sorting and reversing process, reduces labor costs, and improves efficiency.

[0006] This utility model is implemented as follows: a surface-mount LED chip sorting and reversing device includes a base, a first and second conveying tracks arranged mirror-symmetrically on the base, and a reversing module mounted above the first and second conveying tracks. The reversing module includes a top seat fixed to the base, with an annular through groove on its top. A rotatable rotating seat is embedded in the through groove via bearings. At least six sets of lifting mechanisms are distributed at equal angles along the circumference at the bottom of the rotating seat, and a rotatable adsorption seat is located at the bottom of each set of lifting mechanisms. A pneumatic slip ring is provided at the center of the top of the rotating seat, and a vacuum generator is provided at the bottom of the rotating seat. The output end of the vacuum generator is connected to the pneumatic slip ring, and a negative pressure tube is provided on the pneumatic slip ring to provide suction to the adsorption seat. A stepper drive mechanism is provided on the top seat to drive the rotating seat to rotate intermittently.

[0007] As a preferred embodiment of the present invention, a worm gear is provided on the outer circumferential wall of the fixed base, and two symmetrical guide tubes are vertically provided at the bottom of the worm gear. A guide rod that is fixedly connected to the top of the adsorption seat is slidably provided inside the lower end of the guide tube. A second motor is provided at the bottom of the other connecting base, and a worm gear that is connected to the worm gear transmission is provided on the output shaft of the second motor.

[0008] As a preferred embodiment of the surface mount LED chip sorting and reversing device of this utility model, the adsorption seat has an adsorption cavity communicating with the internal threaded tube in the interlayer, the bottom of the adsorption seat is provided with adsorption nozzles communicating with the adsorption cavity in a circular array, and the lower end of the external threaded tube is communicating with the adsorption cavity.

[0009] As a preferred embodiment of the surface mount LED chip sorting and reversing device of this utility model, a high-definition camera is embedded at the center of the bottom of the adsorption seat, a control valve is provided on the air supply pipe, and a power supply box and a PLC touch screen all-in-one machine are provided on the rotating bottom. The power supply box provides power to the first motor, the second motor, the vacuum generator, the high-definition camera, the control valve, and the PLC touch screen all-in-one machine. The PLC touch screen all-in-one machine is electrically connected to the first motor, the second motor, the vacuum generator, the high-definition camera, and the control valve respectively.

[0010] As a preferred embodiment of the surface mount LED chip sorting and reversing device of this utility model, the stepper drive mechanism includes a third motor mounted on the top seat, a transmission gear fixedly connected to the output shaft of the third motor, and an annular gear ring mounted on the outer edge of the rotating seat and meshing with the transmission gear.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model adopts a rotating seat and multiple adsorption seats linkage design to realize continuous flow operation; it replaces manual intervention with PLC intelligent control system to reduce manual operation.

[0013] 2. This utility model simultaneously completes multiple processes such as adsorption, detection, reversal, and conveying; the processing efficiency is improved compared with the traditional method, and the worm gear, worm, and threaded tube lifting mechanism achieves precise positioning. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the lifting mechanism and adsorption seat of this utility model.

[0017] Figure 3 This is a top view of the rotating base of this utility model.

[0018] Figure 4 This is a schematic diagram of the driven wheel and the driving wheel of this utility model.

[0019] The markings in the diagram are as follows: 1. Base; 2. First conveyor track; 3. Second conveyor track; 4. Top seat; 5. Through slot; 6. Rotary seat; 7. Adsorption seat; 8. Pneumatic slip ring; 9. Vacuum generator; 10. Negative pressure pipe; 11. Connecting seat; 12. Fixed seat; 13. Connecting frame; 14. Sliding sleeve; 15. Internal threaded pipe; 16. External threaded pipe; 17. Driven wheel; 18. Driving wheel; 19. First motor; 20. Worm gear; 21. Guide tube; 22. Guide rod; 23. Second motor; 24. Worm; 25. Adsorption chamber; 26. Vacuum nozzle; 27. High-definition camera; 28. Control valve; 29. ​​Power supply box; 30. PLC touch screen all-in-one machine; 31. Third motor; 32. Transmission gear; 33. Ring gear. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0021] Please see Figure 1-4A surface-mount LED chip sorting and reversing device includes a base 1, a first conveying track 2 and a second conveying track 3 arranged mirror-symmetrically on the base 1, and a reversing module mounted above the first conveying track 2 and the second conveying track 3. The reversing module includes a top seat 4 fixed to the base 1, with an annular through groove 5 on its top. A rotating seat 6 is rotatable and embedded in the through groove 5 via bearings. At least six sets of lifting mechanisms are distributed at equal angles along the circumference at the bottom of the rotating seat 6, and a rotatable adsorption seat 7 is located at the bottom of each set of lifting mechanisms. A pneumatic slip ring 8 is provided at the center of the top of the rotating seat 6, and a vacuum generator 9 is provided at the bottom of the rotating seat 6. The output end of the vacuum generator 9 is connected to the pneumatic slip ring 8, and a negative pressure tube 10 is provided on the pneumatic slip ring 8 to provide suction to the adsorption seat 7. A stepper drive mechanism for driving the rotating seat to rotate intermittently is provided on the top seat 4.

[0022] In this embodiment: After the surface-mount LED chip is inspected and transported on the first conveying track 2, the lifting mechanism at the bottom of the rotating seat 6 drives the adsorption seat 7 to rise and fall. The vacuum generator 9 is activated, and the adsorption seat 7 generates suction, which adsorbs and fixes the surface-mount LED chip on the negative pressure tube 10. The adsorption seat 7 rotates to unify the orientation of the surface-mount LED chip. After unifying the orientation, it is placed on the first conveying track 3 and transported to the next station. The rotating seat 6 rotates intermittently (each rotation of 60° corresponds to 6 stations), making it easier for the leftmost adsorption seat 7 to adsorb and fix the surface-mount LED chip, and for the rightmost adsorption seat 7 to place the reversed surface-mount LED chip on the second conveying track 3 for transport. The rotating seat 6 drives multiple adsorption seats 7 to automatically reverse the orientation of the surface-mount LED chip, reducing labor and improving efficiency.

[0023] As a technical optimization of this utility model, the lifting mechanism includes two connecting seats 11 vertically disposed at the bottom of the rotating seat 6, a fixed seat 12 disposed at the other end of the two connecting seats 11, a connecting frame 13 symmetrically disposed at the bottom of the fixed seat 12, a sliding sleeve 14 disposed between the two connecting frames 13, an internally threaded tube 15 slidably disposed within the sliding sleeve 14, an externally threaded tube 16 sleeved on the upper end of the internally threaded tube 15, a driven wheel 17, and a driving wheel 18; the lower end of the externally threaded tube 16 is rotatably connected to the adsorption seat 7, the upper end of the externally threaded tube 16 passes through the fixed seat 12 and is rotatably connected to it, and the upper end of the externally threaded tube 16 is connected to the negative pressure tube 1. The other end of 0 is connected, the driven wheel 17 is fixedly connected to the outer circumferential wall of the upper end of the external threaded tube 16, the driven wheel 17 is connected to the driving wheel 18 in a driving connection, one of the connecting seats 11 is provided with a first motor 19, the output shaft of the first motor 19 is coaxially fixedly connected to the driving wheel 18; the outer circumferential wall of the fixed seat 12 is provided with a worm gear 20, the bottom of the worm gear 20 is provided with two symmetrical guide tubes 21 vertically, the lower end of the guide tube 21 is provided with a guide rod 22 that is fixedly connected to the top of the adsorption seat 7 in a sliding manner, the bottom of the other connecting seat 11 is provided with a second motor 23, the output shaft of the second motor 23 is provided with a worm 24 that is connected in a driving connection to the worm gear 20.

[0024] In this embodiment: the first motor 19 is started, and the driving wheel 18 and the driven wheel 17 drive the external threaded tube 16 to move within the internal threaded tube 15, enabling the rotating seat 6 to move up and down, further facilitating the adjustment of the height of the adsorption seat 7. The external threaded tube 16 is connected through the negative pressure tube 10, and the adsorption seat 7 generates suction. The second motor 23 is started, and the worm gear 24 and worm wheel 20 drive the adsorption seat 7 to rotate through the guide tube 21 and guide rod 22, facilitating the adjustment of the orientation of the surface-mount LED chips. The surface-mount LED chips that have been inspected on the first conveying track 2 can be transported to the second conveying track 3, ensuring that the orientation of the surface-mount LED chips is uniform.

[0025] As a technical optimization of this utility model, the adsorption seat 7 has an adsorption cavity 25 in the interlayer that communicates with the internal threaded tube 15, and the bottom of the adsorption seat 7 is provided with a vacuum nozzle 26 in a circular array that communicates with the adsorption cavity 25, and the lower end of the external threaded tube 16 communicates with the adsorption cavity 25.

[0026] In this embodiment: the external threaded tube 16 is connected to the adsorption chamber 25, and the adsorption chamber 25 and the vacuum nozzle 26 generate suction, which makes it easy to adsorb the surface-mount LED chip, and easy to transfer and change the orientation of the surface-mount LED chip. The vacuum nozzle 26 avoids friction between the surface-mount LED chip and the adsorption seat 7, and easily protects the high-definition camera 27, preventing the high-definition camera 27 from sticking to the surface-mount LED chip.

[0027] As a technical optimization of this utility model, a high-definition camera 27 is embedded at the bottom center of the adsorption seat 7, a control valve 28 is provided on the negative pressure pipe 10, and a power supply box 29 and a PLC touch screen all-in-one machine 30 are provided on the rotating bottom. The power supply box 29 provides power to the first motor 19, the second motor 23, the vacuum generator 9, the high-definition camera 27, the control valve 28, and the PLC touch screen all-in-one machine 30. The PLC touch screen all-in-one machine 30 is electrically connected to the first motor 19, the second motor 23, the vacuum generator 9, the high-definition camera 27, and the control valve 28 respectively.

[0028] In this embodiment: the power supply box 29 provides separate power supplies for the first motor 19, the second motor 23, the vacuum generator 9, the high-definition camera 27, the control valve 28, and the PLC touch screen all-in-one machine 30. The high-definition camera 27 captures high-definition images of the adsorbed LED chips, and the captured images are transmitted to the PLC touch screen all-in-one machine 30. After processing and analysis, the PLC touch screen all-in-one machine 30 determines the orientation of the LED chips. If the orientation is inconsistent, the PLC controls the second motor 23 to start, causing the adsorption seat 7 to rotate the LED chips, which can adjust the orientation of the LED chips to ensure that the orientation of the LED chips is consistent. This eliminates the need for manual adjustment by staff, reducing labor costs and improving efficiency. When the adsorption seat 7 is transferring the adsorbed LEDs, the control valve 28 is in the open state and is closed after the transfer is completed. The high-definition camera 27 (which uses a CMOS vision sensor in conjunction with a ring LED light source to collect images of the chip electrode features and uses the OpenCV library for template matching to achieve orientation recognition) ensures the accuracy of orientation recognition.

[0029] As a technical optimization of this utility model, the stepper drive mechanism includes a third motor 31 mounted on the top seat 4, a transmission gear 32 fixedly connected to the output shaft of the third motor 31, and an annular gear ring 33 mounted on the outer edge of the rotating seat 6 and meshing with the transmission gear 32.

[0030] In this embodiment: the third motor 31 is started, and the transmission gear 32 drives the ring gear 33 to rotate the rotating seat 6; the first motor 19, the second motor 23 and the third motor 31 are all motors with self-locking function (worm gear self-locking motors).

[0031] Working principle and usage process of this utility model:

[0032] The surface-mount LED chip undergoes electrical orientation detection (such as polarity testing) on ​​the first conveyor track 2. The PLC controls the first motor 19 to start, the lifting mechanism lowers the adsorption seat 7 to a predetermined height, the vacuum generator 9 starts, the control valve 28 opens to maintain the adsorption state, and the vacuum nozzle 26 generates negative pressure to adsorb the chip. The PLC analyzes the chip orientation data collected by the camera. If the orientation does not meet the requirements, the second motor 23 is started, driving the worm gear 24 and worm wheel 20 to drive the adsorption seat 7 to rotate through the guide tube 21 and guide rod 22, thus completing the orientation correction. The surface-mount LED chip that does not need to be adjusted for reversal is directly conveyed to the second conveyor track 3. The third motor 31 drives the transmission wheel, causing the rotating seat 6 to rotate intermittently, and multiple adsorption seats 7 work continuously under the drive of the rotating seat 6, transferring the surface-mount LED chip that has completed orientation correction to the top of the second conveyor track 3.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A surface-mount LED chip sorting and commutation device, characterized in that: The system includes a base (1), a first conveying track (2) and a second conveying track (3) arranged symmetrically on the base (1), and a reversing module mounted above the first conveying track (2) and the second conveying track (3). The reversing module includes a top seat (4) fixed to the base (1), with an annular through groove (5) on its top. A rotating seat (6) is rotatable and embedded in the through groove (5) by bearings. At least six sets of lifting mechanisms are distributed at equal angles along the circumference at the bottom of the rotating seat (6), and a rotatable adsorption seat (7) is located at the bottom of each set of lifting mechanisms. A pneumatic slip ring (8) is provided at the center of the top of the rotating seat (6), and a vacuum generator (9) is provided at the bottom of the rotating seat (6). The output end of the vacuum generator (9) is connected to the pneumatic slip ring (8). A negative pressure tube (10) is provided on the pneumatic slip ring (8) to provide suction to the adsorption seat (7). A stepping drive mechanism for driving the rotating seat to rotate intermittently is provided on the top seat (4).

2. The surface mount LED chip sorting and reversing device according to claim 1, characterized in that: The lifting mechanism includes two vertically mounted connecting seats (11) at the bottom of the rotating base (6), a fixed seat (12) at the other end of the two connecting seats (11), a connecting frame (13) symmetrically mounted at the bottom of the fixed seat (12), a sliding sleeve (14) between the two connecting frames (13), an internally threaded tube (15) slidably mounted in the sliding sleeve (14), an externally threaded tube (16) sleeved on the upper end of the internally threaded tube (15), a driven wheel (17), and a driving wheel (18); the externally threaded tube (16) The lower end of the external threaded tube (16) is rotatably connected to the adsorption seat (7), the upper end of the external threaded tube (16) passes through the fixed seat (12) and is rotatably connected to it, and the upper end of the external threaded tube (16) is connected to the other end of the negative pressure tube (10). The driven wheel (17) is fixedly connected to the outer circumference of the upper end of the external threaded tube (16), and the driven wheel (17) is connected to the driving wheel (18) in a transmission. One of the connecting seats (11) is provided with a first motor (19), and the output shaft of the first motor (19) is coaxially fixedly connected to the driving wheel (18).

3. The surface mount LED chip sorting and reversing device according to claim 2, characterized in that: The fixed base (12) has a worm gear (20) on its outer circumference. The bottom of the worm gear (20) has two symmetrical guide tubes (21) vertically arranged. The lower end of the guide tube (21) is slidably provided with a guide rod (22) that is fixed to the top of the adsorption base (7). The bottom of the other connecting base (11) is provided with a second motor (23). The output shaft of the second motor (23) is provided with a worm (24) that is connected to the worm gear (20) for transmission.

4. The surface mount LED chip sorting and reversing device according to claim 2, characterized in that: The adsorption seat (7) has an adsorption cavity (25) that communicates with the internal threaded tube (15) in the interlayer. The bottom of the adsorption seat (7) is provided with a vacuum nozzle (26) that communicates with the adsorption cavity (25) in a circular array. The lower end of the external threaded tube (16) is connected to the adsorption cavity (25).

5. The surface mount LED chip sorting and reversing device according to claim 1, characterized in that: A high-definition camera (27) is embedded in the center of the bottom of the adsorption seat (7). A control valve (28) is provided on the negative pressure pipe (10). A power supply box (29) and a PLC touch screen all-in-one machine (30) are provided on the rotating bottom. The power supply box (29) provides power to the first motor (19), the second motor (23), the vacuum generator (9), the high-definition camera (27), the control valve (28), and the PLC touch screen all-in-one machine (30). The PLC touch screen all-in-one machine (30) is electrically connected to the first motor (19), the second motor (23), the vacuum generator (9), the high-definition camera (27), and the control valve (28) respectively.

6. The surface mount LED chip sorting and reversing device according to claim 1, characterized in that: The stepper drive mechanism includes a third motor (31) mounted on the top seat (4), a transmission gear (32) fixedly connected to the output shaft of the third motor (31), and an annular gear ring (33) located on the outer edge of the rotating seat (6) and meshing with the transmission gear (32).

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