Surface-mounted LED lamp bead electrode detection device

Abstract

The invention discloses a surface-mounted LED lamp bead electrode detection device, and relates to the technical field of lamp bead detection and sorting. A plurality of suction pipes are fixed to a first rotating disc capable of continuously rotating in a surrounding mode, and in cooperation with negative pressure suction provided by a vacuum generator for the interiors of the suction pipes, surface-mounted LED lamp beads can be stably grabbed; the high-transmittance glass plate is fixedly installed at the top of the suction pipe, the light sensing module arranged above the high-transmittance glass plate is matched, after the patch type lamp bead is powered on, whether an electrode of the patch type lamp bead is normal or not can be detected, the first electric control valve is installed in the flow dividing pipe connected with the corresponding suction pipe in a matched mode, and on-off control over negative pressure suction air flow in the suction pipe is achieved; according to the surface-mounted lamp bead electrode detection device, the surface-mounted lamp bead electrodes can be continuously detected in the rotary conveying process, the qualified products and the unqualified products can be rapidly sorted through negative pressure adsorption control, and the working efficiency of the device can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bead detection and sorting, and particularly to a detection device for electrodes of surface-mounted LED beads. Background Art

[0002] In the current LED manufacturing industry, surface-mounted LED beads are widely used in many fields such as electronic devices, lighting fixtures, and automotive headlights due to their advantages of small size, high brightness, and low energy consumption. During the processing and production of surface-mounted LED beads, in order to ensure the quality of surface-mounted LED beads and avoid the situation that surface-mounted LED beads cannot be lit due to abnormal electrode connection, it is necessary to use a detection device to detect the stability of their electrode connection.

[0003] During the actual use of the existing detection device for electrodes of surface-mounted LED beads, the separation and sorting operations of qualified and unqualified products are usually achieved by means of the swing or pushing of a robotic arm. During the sorting process, the amplitude of the sorting swing of the device is too large, resulting in low sorting efficiency of qualified and unqualified products. Moreover, the sorting operation is achieved through actions such as pushing and swinging, which is also likely to cause a relatively slow response speed of the sorting mechanism. There is a long delay between detecting whether the bead electrode is qualified or not and starting the sorting action, resulting in mutual interference and restriction between the detection of the bead electrode and the sorting operations of qualified and unqualified products, and greatly reducing the efficiency of detecting the electrodes of surface-mounted LED beads.

[0004] Therefore, a detection device for electrodes of surface-mounted LED beads is proposed to solve some problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to propose a detection device for electrodes of surface-mounted LED beads to solve the drawback that the sorting operations for qualified and unqualified products are too cumbersome during the detection of electrodes of surface-mounted LED beads in the prior art, resulting in low overall detection efficiency.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A patch-type LED lamp bead electrode detection device, comprising a first machine platform. A column is fixed on the top of the first machine platform, and a vertically arranged rotating shaft is rotatably installed in the column. A first turntable is fixed on the rotating shaft. A number of uniformly distributed suction pipes are fixedly arranged around the upper edge position of the first turntable. A high-transparency glass plate is fixedly covered on the top end of the suction pipe. A first servo motor is fixed in the first machine platform. A photosensitive module is fixed on the high-transparency glass plate at the exact rear of the first machine platform. A patch-type lamp bead is adsorbed at the bottom of the suction pipe. A vacuum generator is installed on the first machine platform. A ring pipe connected to the vacuum generator is fixed on the top of the first turntable, and a shunt pipe corresponding to and communicating with each of the numerous suction pipes is fixedly connected to the ring pipe. A first electric control valve is fixed on each shunt pipe. A sleeve is fixed on the first machine platform below the photosensitive module, and a lifting platform vertically arranged below the suction pipe is installed in the sleeve. Two conductive contacts are fixedly inlaid on the top of the lifting platform.

[0008] Preferably, a light-shielding cover covering the outside of the photosensitive module is fixedly installed on the top of the first machine platform. A second machine platform is fixed on the right side of the first machine platform, and a vibrating feeding tray is fixed on the second machine platform. A feeding track extending horizontally below the first turntable is installed on the vibrating feeding tray. Notch openings adapted to the rotation trajectory of the suction pipe are provided on the front and rear side walls at one end of the feeding track close to the first turntable. A horizontally arranged second electric conveyor belt is installed on the left side of the first machine platform, and one end of the second electric conveyor belt extends below the first turntable. A stacking manipulator is arranged behind the second electric conveyor belt.

[0009] Preferably, a chamber fixedly communicated with the negative pressure extraction port of the vacuum generator is provided in the column. The lower end of the rotating shaft is rotationally communicated with the chamber, and the upper end of the rotating shaft is fixedly communicated with the ring pipe.

[0010] Preferably, a first spray pipe fixedly communicated with the air outlet of the vacuum generator is fixed on the column, and the first spray pipe points to the patch-type lamp bead adsorbed at the bottom of the suction pipe below the photosensitive module. A second spray pipe is fixedly communicated with the first spray pipe, and a second electric control valve is installed between the second spray pipe and the first spray pipe.

[0011] Preferably, the lifting platform is installed in the sleeve in a lifting manner. A spring elastically supporting the bottom of the lifting platform is fixed in the sleeve. An inclined block is fixed on the bottom of the first turntable and arranged between adjacent two suction pipes.

[0012] Preferably, a groove is provided at the bottom of the inclined block, and the rotation trajectory of the groove is adapted to the position of the conductive contact.

[0013] Preferably, a first through groove is provided at the bottom of one end of the feeding track close to the first turntable, and the width of the first through groove is adapted to the width of the patch-type lamp bead. A second through groove is provided at the end of the feeding track close to the first turntable, and the internal shape of the second through groove is adapted to the inverted patch-type lamp bead.

[0014] Preferably, the height of one end of the feeding track close to the first turntable is higher than that of the end close to the vibrating feeding tray. A first electric conveyor belt is arranged below the first through groove and the second through groove, and the first electric conveyor belt extends into the vibrating feeding tray.

[0015] Preferably, a disc is fixed on the first machine platform behind the sleeve, and a second turntable is rotatably installed on the disc. A plurality of uniformly distributed Ω-shaped cavities are formed around the second turntable, and the Ω-shaped cavities communicate with the outer end wall of the second turntable. The bottom of the Ω-shaped cavity is of a through structure. A third through groove is formed on the disc at the rotation track of the Ω-shaped cavity. A third electric conveyor belt is fixed on the first machine platform below the third through groove, and a second servo motor is fixedly installed in the first machine platform.

[0016] Preferably, a buffer cotton is fixedly covered on the inner end wall of the Ω-shaped cavity. An exhaust hole communicating with a plurality of Ω-shaped cavities is formed in the middle of the top of the second turntable, and a filter screen is fixed at the connection between the exhaust hole and the Ω-shaped cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, by fixing a plurality of straws around the continuously rotatable first turntable and cooperating with the negative pressure suction provided by the vacuum generator in the straws, stable grasping of the patch-type lamp beads can be achieved. By fixedly installing a high-transparency glass plate on the top of the straw and cooperating with the photosensitive module correspondingly arranged above the high-transparency glass plate, after the bottom electrode of the patch-type lamp bead contacts the conductive contact on the top of the lifting table and is energized, the photosensitive module can detect the lighting condition of the patch-type lamp bead below through the high-transparency glass plate, so as to realize the detection of whether the electrodes of the patch-type lamp beads are normal. By installing the first electric control valve in the shunt pipe connected to the corresponding straw, the on-off control of the negative pressure suction air flow in the straw is realized, and then the continuous conveying of qualified products and the throwing away of unqualified products are realized. During the rotary conveying process, the detection of the electrodes of the patch-type lamp beads is continuously realized, and the rapid sorting of qualified products and unqualified products is realized through the negative pressure adsorption control, making the sorting operation more convenient and efficient. With multiple cooperations, the working efficiency of the device can be effectively improved;

[0019] 2. In the present invention, by installing the first spray pipe communicated with the air outlet of the vacuum generator below the first turntable and pointing the end of the first spray pipe to the bottom of the corresponding straw below the photosensitive module, and cooperating with the control of the second electric control valve, when the straw throws away the unqualified patch-type lamp beads, the high-speed flowing air flow can be sprayed to the unqualified patch-type lamp beads through the first spray pipe. Through the air flow impact, the speed of the unqualified patch-type lamp beads leaving the conveying line can be further accelerated, which is beneficial to further improving the efficiency of sorting out unqualified products;

[0020] 3. In the present invention, the bottom of the lifting platform is supported elastically by a spring, so that the lifting platform maintains a continuous upward movement trend. By fixing a plurality of inclined blocks around the bottom of the first turntable and arranging the inclined blocks between two adjacent straws, a pressing operation on the top of the lifting platform can be formed with the help of the guidance of the inclined blocks during rotation, thereby driving the lifting platform to move up and down reciprocatingly, which is conducive to ensuring that the conductive contacts embedded on the lifting platform are automatically connected to the electrodes of the plurality of patch-type lamp beads reciprocatingly, and the convenience of use of the device is improved to a certain extent. At the same time, by providing a groove at the bottom of the inclined block, when the inclined block slides relative to the top of the lifting platform, it will not cause scratching to the conductive contacts, which is conducive to extending the service life of the conductive contacts;

[0021] 4. In the present invention, by arranging a rotatable second turntable directly behind the first turntable, with the help of the Ω-shaped cavity opened around the second turntable, unqualified SMD lamp beads pushed out by the airflow ejected outward from the first nozzle can be received, and the transfer is completed by coordinating the rotation of the second turntable, which can prevent unqualified SMD lamp beads from splashing around and from being damaged by violent collision after flying out, thereby facilitating the stable collection of unqualified SMD lamp beads and facilitating subsequent secondary inspection or maintenance of the unqualified SMD lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a three-dimensional diagram of the structure on the second machine platform of the present invention;

[0025] Figure 3 It is a three-dimensional diagram of the structure on the first rotating disk and the disc of the present invention;

[0026] Figure 4 It is a three-dimensional diagram of the first rotating disk of the present invention from a top-down perspective;

[0027] Figure 5 It is a three-dimensional diagram of the first rotating disk of the present invention when viewed from above;

[0028] Figure 6 The figure is a disassembled diagram of the sleeve and the lifting platform of the present invention;

[0029] Figure 7 The disassembled diagram of the circular disc and the second rotating disc of the present invention;

[0030] Figure 8 For the present invention Figure 1Top view of the middle structure;

[0031] Figure 9 For the present invention Figure 8 Cross-sectional view taken along line A-A in the present invention;

[0032] Figure 10 For the present invention Figure 9 Enlarged view of part C in the present invention;

[0033] Figure 11 For the present invention Figure 8 Cross-sectional view taken along line B-B in the present invention;

[0034] Figure 12 For the present invention Figure 1 Side view of the middle structure in the present invention;

[0035] Figure 13 For the present invention Figure 12 Cross-sectional view taken along line D-D in the present invention;

[0036] Figure 14 For the present invention Figure 13 Enlarged view of part E in the present invention.

[0037] Reference numerals in the figure:

[0038] 1. First machine platform; 101. Column; 102. Rotating shaft; 103. First turntable; 104. Suction pipe; 105. High-transparency glass plate; 106. First servo motor; 107. Photosensitive module; 108. Light-shielding cover;

[0039] 2. SMD lamp beads;

[0040] 3. Vacuum generator; 301. Annular pipe; 302. Shunt pipe; 303. First electric control valve; 304. Chamber; 305. First nozzle; 306. Second nozzle; 307. Second electric control valve;

[0041] 4. Sleeve; 401. Lifting table; 402. Conductive contact; 403. Spring; 404. Inclined block; 405. Groove;

[0042] 5. Second machine platform; 501. Vibration feeding tray; 502. Feeding track; 503. Notch; 504. First through groove; 505. Second through groove; 506. First electric conveyor belt;

[0043] 6. Second electric conveyor belt; 601. Stacking manipulator;

[0044] 7. Disk; 701. Second turntable; 702. Ω-shaped cavity; 703. Third through groove; 704. Third electric conveyor belt; 705. Exhaust hole; 706. Filter screen; 707. Second servo motor. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0046] Embodiment: This embodiment provides a patch-type LED lamp bead electrode detection device. Refer to Figure 1 - Figure 14 , specifically, it includes a first machine table 1. A column 101 is fixed on the top of the first machine table 1, and a vertically arranged rotating shaft 102 is rotatably installed in the column 101. A first turntable 103 is fixed on the rotating shaft 102. A plurality of uniformly distributed suction pipes 104 are fixedly arranged around the upper edge position of the first turntable 103. A high-transparency glass plate 105 is fixedly covered at the top end of the suction pipe 104. A first servo motor 106 is fixed in the first machine table 1. A photosensitive module 107 is fixed on the high-transparency glass plate 105 located directly behind the first machine table 1. A patch-type lamp bead 2 is adsorbed at the bottom of the suction pipe 104. A vacuum generator 3 is installed on the first machine table 1. A ring pipe 301 connected to the vacuum generator 3 is fixed on the top of the first turntable 103, and a flow dividing pipe 302 corresponding to and communicating with a plurality of suction pipes 104 one by one is fixedly connected to the ring pipe 301. A first electric control valve 303 is fixed on each flow dividing pipe 302. A sleeve 4 is fixed on the first machine table 1 below the photosensitive module 107, and a lifting table 401 vertically arranged below the suction pipe 104 is installed in the sleeve 4. Two conductive contacts 402 are fixedly embedded at the top of the lifting table 401. A second machine table 5 is fixed on the right side of the first machine table 1, and a vibrating feeding tray 501 is fixed on the second machine table 5. A feeding track 502 extending horizontally below the first turntable 103 is installed on the vibrating feeding tray 501, and notch openings 503 adapted to the rotation track of the suction pipes 104 are opened on the front and rear side walls at one end of the feeding track 502 close to the first turntable 103. A second electric conveyor belt 6 is horizontally arranged on the left side of the first machine table 1, and one end of the second electric conveyor belt 6 extends below the first turntable 103. A stacking manipulator 601 is arranged behind the second electric conveyor belt 6.

[0047] During the operation of the device, the staff puts the patch-type lamp beads 2 to be detected and sorted into the vibrating feeding tray 501, and then starts the vibrating feeding tray 501. Under the vibrating transportation of the vibrating feeding tray 501, a plurality of patch-type lamp beads 2 gradually enter the feeding track 502 in sequence and are orderly transported along the feeding track 502 to below the first turntable 103. When the patch-type lamp bead 2 is transported to one end of the feeding track 502 close to the first turntable 103, the patch-type lamp bead 2 is exactly on the rotation track of a plurality of suction pipes 104 on the first turntable 103. Synchronously, the first servo motor 106 is powered on and started, driving the rotating shaft 102 fixedly connected to its drive shaft to rotate, and then driving the first turntable 103 to rotate, so as to Figure 1Taking the middle structure direction as an example, the first turntable 103 is driven to rotate counterclockwise. During the rotation of the first turntable 103, the lower end of the straw 104 can smoothly pass through the notch 503. The vacuum generator 3 is externally connected to an air pump. Through the connection of the annular pipe 301 and the shunt pipe 302, a negative pressure suction force is provided for the straw 104. When the straw 104 passes through the notch 503, the first electric control valve 303 fixed on the corresponding shunt pipe 302 is opened, so that the negative pressure suction acts on the bottom of the corresponding straw 104. Through negative pressure adsorption, the patch-type lamp bead 2 can be stably adsorbed on the bottom of the corresponding straw 104. Then, with the rotation of the first turntable 103, the patch-type lamp beads 2 orderly conveyed in the feeding track 502 are taken out through the notch 503.

[0048] With the first turntable 103 driving the straw 104 to rotate, the patch-type lamp bead 2 held by the bottom of the straw 104 rotates and moves synchronously. During the counterclockwise rotation of the first turntable 103, the patch-type lamp bead 2 held by the bottom of the straw 104 is carried above the lifting table 401. Then the lifting table 401 rises slightly, so that the two conductive contacts 402 embedded in its top are respectively in contact with the two electrodes fixed on the patch-type lamp bead 2 to form a power supply connection. If the electrodes on the patch-type lamp bead 2 are normal, the patch-type lamp bead 2 will be powered on and lit. At this time, the photosensitive module 107 installed above can detect the lighting condition of the corresponding patch-type lamp bead 2 through the corresponding high-transparency glass plate 105. If the patch-type lamp bead 2 is normally lit, it indicates that the electrodes are normal. If the patch-type lamp bead 2 is not lit, it indicates that the electrodes are in an abnormal state.

[0049] For the patch-type lamp bead 2 with abnormal electrodes, the device can control the closing of the first electric control valve 303 installed on the corresponding shunt pipe 302, interrupt the negative pressure suction of the air flow in the corresponding suction pipe 104, and release the adsorption and grasping of the unqualified products. For the patch-type lamp bead 2 with normal electrodes, the device keeps the corresponding first electric control valve 303 in the open state to maintain the stable grasping of the qualified products. Along with the rotation and transportation of the first turntable 103, the qualified patch-type lamp beads 2 are transported above the second electric conveyor belt 6, and then the corresponding first electric control valve 303 is controlled to close, and the qualified patch-type lamp beads 2 are dropped onto the second electric conveyor belt 6, which is stably output outward by means of the second electric conveyor belt 6, and are stacked and boxed by means of the stacking manipulator 601, realizing the detection and sorting operations of the electrodes of the patch-type lamp beads 2. The device realizes the detection of the electrodes of the patch-type lamp beads 2 and the sorting operations of the qualified products and unqualified products during the rotation and transportation process through the rotation of the first turntable 103 and the negative pressure adsorption of the suction pipe 104 on the patch-type lamp beads 2. There will be no obvious stagnation during the detection process, which can effectively improve the efficiency of the electrode detection and sorting of the patch-type lamp beads 2. And the electrode detection is realized by observing the lighting state after the patch-type lamp beads 2 are powered on, which improves the detection accuracy of the device to a certain extent. The unqualified products are sorted out by releasing the negative pressure adsorption, making the sorting operation more convenient and efficient. With multiple cooperations, the working efficiency of the device can be effectively improved.

[0050] In the specific implementation process, such as Figure 1 and Figure 11 As shown, a light-shielding cover 108 covering the outside of the photosensitive module 107 is fixedly installed on the top of the first machine platform 1. During the operation of the device, by covering the light-shielding cover 108 outside the photosensitive module 107, the light-shielding cover 108 can detect the lighting state of the patch-type lamp beads 2 below in a darker environment, which can effectively reduce the influence of the external ambient light on the detection of the lighting state of the patch-type lamp beads 2 by the light-shielding cover 108, and improves the detection accuracy of the device to a certain extent.

[0051] In the specific implementation process, such as Figure 4 and Figure 11As shown in the figure, a chamber 304 is provided in the pedestal 101 and is fixedly communicated with the negative pressure suction port of the vacuum generator 3. The lower end of the rotating shaft 102 is rotationally communicated with the chamber 304, and the upper end of the rotating shaft 102 is fixedly communicated with the annular pipe 301. During the operation of the device, the high-pressure air flow provided by the air pump is converted by the vacuum generator 3, and a high-pressure suction effect on the chamber 304 is formed from the negative pressure suction port. During this process, since the lower end of the rotating shaft 102 is rotationally communicated in the chamber 304 and the upper end of the rotating shaft 102 is fixedly communicated with the vacuum generator 3, the negative pressure suction effect in the chamber 304 can be achieved through the communication inside the rotating shaft 102 and the vacuum generator 3, as well as the communication between the vacuum generator 3 and the numerous annular pipes 301. In the state where the corresponding first electric control valve 303 is opened, it acts on the corresponding suction pipe 104, realizing the operation of the device to suck and hold the chip LED 2 through the suction pipe 104 for electrode detection. Through the rotational communication between the lower end of the rotating shaft 102 and the chamber 304, the air flow suction in the suction pipe 104 can be avoided from being affected by the rotation of the first turntable 103, effectively improving the stability of the device during operation.

[0052] In the specific implementation process, as Figure 11 and Figure 13 shown in the figure, a first spray pipe 305 fixedly communicated with the air outlet of the vacuum generator 3 is fixed on the pedestal 101, and the first spray pipe 305 points to the chip LED 2 adsorbed at the bottom of the suction pipe 104 below the photosensitive module 107. A second spray pipe 306 is fixedly communicated with the first spray pipe 305, and a second electric control valve 307 is installed between the second spray pipe 306 and the first spray pipe 305. During the operation of the device, the device can adjust the flow direction of the air flow ejected from the air outlet of the vacuum generator 3 by controlling the second electric control valve 307. Under normal conditions, under the adjustment of the second electric control valve 307, the air flow ejected from the air outlet of the vacuum generator 3 will first be transported into the first spray pipe 305 and then ejected outward through the second spray pipe 306. In this state, no air flow will be ejected from the end position of the first spray pipe 305.

[0053] When the surface-mounted lamp bead 2 is grasped by the suction pipe 104 and placed on the lifting platform 401 for electrode detection, if it is detected that the electrode of the corresponding surface-mounted lamp bead 2 is in a damaged state, not only will the corresponding first electromagnetic control valve 303 close to release the negative pressure adsorption and grasping of the suction pipe 104 on the surface-mounted lamp bead 2 with damaged electrodes, but the second electromagnetic control valve 307 will also be synchronously controlled and adjusted. In this state, the end of the first nozzle 305 is unobstructed, while the second nozzle 306 is in a closed state. The high-pressure air flow ejected from the air outlet of the vacuum generator 3 will directly spray through the first nozzle 305 onto the unqualified surface-mounted lamp bead 2 on the lifting platform 401. With the impact of the high-pressure and high-speed air flow, the unqualified surface-mounted lamp bead 2 can be quickly blown away, which can further improve the efficiency of sorting out unqualified products. The unobstructed state of the end of the first nozzle 305 only lasts for 1 s, and then the second electromagnetic control valve 307 resets, and the air flow introduced into the first nozzle 305 maintains the state of being normally ejected through the second nozzle 306. The end of the first nozzle 305 has a smaller diameter, which makes the air flow sprayed through the end of the first nozzle 305 onto the unqualified surface-mounted lamp bead 2 more concentrated and has a greater impact force, facilitating the more efficient and stable blowing away of the unqualified surface-mounted lamp bead 2. The end of the second nozzle 306 has a larger diameter, which can weaken the impact force of the air flow ejected outward to a certain extent.

[0054] In the specific implementation process, as Figure 3 、 Figure 5 、 Figure 6 and Figure 11 shown, the lifting platform 401 is installed in the sleeve 4 in a lifting manner. A spring 403 that elastically supports the bottom of the lifting platform 401 is fixed inside the sleeve 4. The bottom of the first turntable 103 is fixed with an inclined block 404 arranged between two adjacent suction pipes 104. A groove 405 is formed at the bottom of the inclined block 404, and the rotation trajectory of the groove 405 is adapted to the position of the conductive contact 402. During the use of this device, by elastically supporting the spring 403 at the bottom of the lifting platform 401, the lifting platform 401 maintains a continuous upward movement trend. During the continuous rotation of the first turntable 103, through the guidance and pressing of the inclined blocks 404 distributed around the bottom, the lifting platform 401 can be driven to reciprocate up and down. When the suction pipe 104 carries the surface-mounted lamp bead 2 and gradually approaches the conductive contact 402 embedded at the top of the lifting platform 401, the lifting platform 401 is controlled to slowly rise. After the suction pipe 104 carries the surface-mounted lamp bead 2 to be directly above the conductive contact 402 embedded on the lifting platform 401, under the elastic support of the spring 403, the conductive contact 402 just fits with the electrode on the surface-mounted lamp bead 2 for power-on detection of the electrode.

[0055] When the straw 104 carries the patch LED lamp 2 and gradually moves away from the conductive contact 402 embedded in the top of the lifting table 401, the lifting table 401 is pressed downward by the inclined block 404, so that the patch LED lamp 2 is separated from the conductive contact 402 embedded in the top of the lifting table 401. During the rotation of the first turntable 103, many inclined blocks 404 are driven to rotate synchronously. Cooperating with the spring 403, the up and down lifting of the lifting table 401 is controlled. The operation is convenient and stable, which is conducive to ensuring that the conductive contact 402 embedded on the lifting table 401 is automatically docked with the electrodes of many patch LED lamps 2 continuously. At the same time, by opening the groove 405 at the bottom of the inclined block 404 and setting the opening position of the groove 405 to be adapted to the conductive contact 402, when the inclined block 404 slides relative to the top of the lifting table 401, the conductive contact 402 will not be scratched, realizing the protection of the conductive contact 402 and improving the service life of the conductive contact 402 to a certain extent.

[0056] In the specific implementation process, as Figure 2 、 Figure 10 and Figure 14 shown, a first through groove 504 is opened at the bottom of one end of the feeding track 502 close to the first turntable 103, and the width of the first through groove 504 is adapted to the width of the patch LED lamp 2. A second through groove 505 is opened at the end of the feeding track 502 close to the first turntable 103, and the internal shape of the second through groove 505 is adapted to the inverted patch LED lamp 2. The height of the position of one end of the feeding track 502 close to the first turntable 103 is higher than that of its end close to the vibrating feeding tray 501. A first electric conveyor belt 506 is arranged below the first through groove 504 and the second through groove 505, and the first electric conveyor belt 506 extends into the vibrating feeding tray 501.

[0057] During the use of the device, when the vibrating feeding tray 501 is used in cooperation with the feeding track 502 to continuously feed and convey the surface-mounted lamp beads 2, if the posture of the surface-mounted lamp beads 2 entering the feeding track 502 is not straightened, when it passes above the first through groove 504, it will lose the support and fall downward through the first through groove 504. The surface-mounted lamp beads 2 with the correct posture will be supported on the first through groove 504 due to their length being greater than the width of the first through groove 504 and pass through smoothly, and finally be stably pushed to one end of the feeding track 502 close to the first turntable 103. During the conveying process of the surface-mounted lamp beads 2 by the feeding track 502, if the surface-mounted lamp beads 2 are in an inverted state when they are conveyed to the end position of the feeding track 502 close to the first turntable 103, the inverted surface-mounted lamp beads 2 will be exported through the second through groove 505, while the upright surface-mounted lamp beads 2 will stay at the end position of the feeding track 502 because they do not match the second through groove 505. This makes the surface-mounted lamp beads 2 finally grabbed by the suction pipe 104 all in a consistent posture, and it can ensure that the electrodes at the bottom of the surface-mounted lamp beads 2 face downward, and then can stably contact the conductive contacts 402 embedded on the lifting table 401 for detection, avoiding detection inaccuracy caused by inconsistent postures of the surface-mounted lamp beads 2 or incorrect contact between the electrodes of the surface-mounted lamp beads 2 and the conductive contacts 402, which is beneficial to improving the detection accuracy and stability during the operation of the device.

[0058] By arranging the first electric conveyor belt 506 below the first through groove 504 and the second through groove 505, the surface-mounted lamp beads 2 falling and exported from the first through groove 504 and the second through groove 505 can be conveyed by the first electric conveyor belt 506 and re-enter the vibrating feeding tray 501, and then be fed and conveyed again, which can effectively ensure the stable and comprehensive feeding and conveying of the device through the vibration of the vibrating feeding tray 501.

[0059] In the specific implementation process, as Figure 3 、 Figure 11 and Figure 13 shown, a disc 7 is fixed on the first machine table 1 behind the sleeve 4, and a second turntable 701 is rotatably installed on the disc 7. A number of uniformly distributed Ω-shaped cavities 702 are formed around the second turntable 701, and the Ω-shaped cavities 702 communicate with the outer end wall of the second turntable 701. The bottom of the Ω-shaped cavity 702 is a through structure. A third through groove 703 is formed on the disc 7 on the rotation track of the Ω-shaped cavity 702. A third electric conveyor belt 704 is fixed on the first machine table 1 below the third through groove 703, and a second servo motor 707 is fixedly installed in the first machine table 1.

[0060] During the operation of the device, the second servo motor 707 is powered on and started, driving the second turntable 701 fixedly connected to its drive shaft to rotate, thereby driving the plurality of Ω-shaped cavities 702 arranged around the second turntable 701 to continuously rotate. During the rotation of the second turntable 701, there is always an Ω-shaped cavity 702 corresponding to the straw 104 passing under the photosensitive module 107, so that the unqualified SMD lamp beads 2 sprayed out through the first nozzle 305 will be ejected into the Ω-shaped cavity 702 opened on the rear second turntable 701. With the rotation of the second turntable 701, the Ω-shaped cavity 702 carries the unqualified SMD lamp beads 2 to the third through slot 703, and then the unqualified SMD lamp beads 2 pass through the third through slot 703 under the action of gravity. The third through slot 703 falls onto the third electric conveyor belt 704 and is collected in an orderly manner through the transportation of the third electric conveyor belt 704. The device sets a rotatable second turntable 701 directly behind the first turntable 103. With the help of the Ω-shaped cavity 702 opened around the second turntable 701, the unqualified SMD lamp beads 2 pushed out by the airflow ejected outward by the first nozzle 305 can be received, and the transfer is completed by cooperating with the rotation of the second turntable 701, which can prevent the unqualified SMD lamp beads 2 from splashing around and from being damaged by violent collision after flying out, thereby facilitating the stable collection of the unqualified SMD lamp beads 2 and facilitating the subsequent secondary inspection or maintenance of the unqualified SMD lamp beads 2.

[0061] The inner end wall of the Ω-shaped cavity 702 is fixedly covered with buffer cotton, and an exhaust hole 705 connected to the plurality of Ω-shaped cavities 702 is opened in the middle position of the top of the second turntable 701, and a filter screen 706 is fixed at the connection between the exhaust hole 705 and the Ω-shaped cavity 702. During the operation of the device, by covering the Ω-shaped cavity 702 with buffer cotton, it is beneficial to further reduce the impact force received by the SMD lamp bead 2 when it is shot into the Ω-shaped cavity 702, and by opening the exhaust hole 705 connected to the Ω-shaped cavity 702 in the middle position of the top of the second turntable 701, and arranging the filter screen 706 between the Ω-shaped cavity 702 and the exhaust hole 705 for blocking, so that the airflow entrained with the SMD lamp bead 2 and shot into the Ω-shaped cavity 702 can be discharged outwardly through the exhaust hole 705, which is beneficial to avoid the reciprocating impact of the airflow in the Ω-shaped cavity 702, causing unqualified SMD lamp bead 2 to fly out of the Ω-shaped cavity 702, and can improve the operating stability of the device to a certain extent.

[0062] Specifically, the working principle and operation method of the present invention are as follows:

[0063] The staff places the patch-type lamp bead 2 to be electrode-tested into the vibrating feeding tray 501. Through the vibrating conveyance of the vibrating feeding tray 501, the patch-type lamp bead 2 is driven to be conveyed orderly along the feeding track 502. The patch-type lamp bead 2 with an improper attitude in the feeding track 502 will fall downward through the first through slot 504 onto the first electric conveyor belt 506. The inverted patch-type lamp bead 2 in the feeding track 502 will move to the end and fall downward through the second through slot 505 onto the first electric conveyor belt 506, and then is sent back into the vibrating feeding tray 501 by the first electric conveyor belt 506 for re-vibrating conveyance. The first servo motor 106 is powered on and started, driving the first turntable 103 to drive the numerous surrounding straws 104 to rotate. When the straw 104 passes through the notch 503 opened at the end of the feeding track 502, the corresponding first electric control valve 303 is opened, and a negative pressure suction is formed at the bottom of the straw 104 through the vacuum generator 3 to realize the grasping of the patch-type lamp bead 2 at the end of the feeding track 502;

[0064] The straw 104 carries the patch-type lamp bead 2 and moves to the lifting table 401. Under the cooperation of the spring 403 and the inclined block 404, the lifting table 401 drives the conductive contact piece 402 to rise upward, so that the conductive contact piece 402 contacts the bottom electrode of the patch-type lamp bead 2 to supply power to the patch-type lamp bead 2. At this time, the photosensitive module 107 arranged above can detect the lighting state of the patch-type lamp bead 2 below through the high-transparency glass plate 105. If the electrode is normal, the patch-type lamp bead 2 is lit, and the straw 104 maintains the negative pressure adsorption and grasping of the patch-type lamp bead 2. If the electrode is abnormal, the patch-type lamp bead 2 cannot be lit, the corresponding first electric control valve 303 closes, the negative pressure suction air flow in the straw 104 is interrupted, and the straw 104 releases the grasping of the patch-type lamp bead 2;

[0065] Synchronously, the second electric control valve 307 adjusts the on-off, so that the high-pressure and high-speed air flow ejected from the air outlet of the vacuum generator 3 is sprayed onto the abnormal patch-type lamp bead 2 through the first nozzle 305, and the abnormal patch-type lamp bead 2 is blown into the Ω-shaped cavity 702 surrounded and opened on the rear second turntable 701. The second servo motor 707 is powered on and started to drive the second turntable 701 to rotate continuously. After the Ω-shaped cavity 702 coincides with the third through slot 703, the abnormal patch-type lamp bead 2 entering the Ω-shaped cavity 702 falls onto the third electric conveyor belt 704 for orderly conveying and collection. During the continuous rotation of the first turntable 103, the normal patch-type lamp bead 2 is adsorbed and grasped by the straw 104 onto the second electric conveyor belt 6, and then the corresponding first electric control valve 303 closes, so that the normal patch-type lamp bead 2 falls onto the second electric conveyor belt 6 and is conveyed outward, and finally is grasped and placed into the tray by the stacking manipulator 601 to realize the electrode detection and sorting operation of the patch-type lamp bead 2.

[0066] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent substitutions or changes according to the technical solution and inventive concept of the present invention.

Claims

1. A SMD LED lamp bead electrode detection device, comprising a first machine (1), characterized in that: A column (101) is fixed on the top of the first machine (1), and a vertically arranged rotating shaft (102) is rotatably installed in the column (101), a first turntable (103) is fixed on the rotating shaft (102), a plurality of evenly distributed straws (104) are fixed around the edge of the first turntable (103), the tops of the straws (104) are fixedly covered with a high-transmittance glass plate (105), a first servo motor (106) is fixed in the first machine (1), a photosensitive module (107) located on the high-transmittance glass plate (105) directly behind is fixed on the first machine (1), and a patch-type lamp bead (207) is adsorbed on the bottom of the straw (104). ), a vacuum generator (3) is installed on the first machine (1), a ring tube (301) connected to the vacuum generator (3) is fixed on the top of the first turntable (103), and a shunt tube (302) connected to a plurality of suction tubes (104) is fixedly connected to the ring tube (301), and each of the shunt tubes (302) is fixedly connected to a first electric control valve (303), a sleeve (4) located below the photosensitive module (107) is fixed on the first machine (1), and a lifting platform (401) vertically arranged below the suction tube (104) is installed in the sleeve (4), and two conductive contact sheets (402) are fixedly embedded on the top of the lifting platform (401).

2. A SMD LED lamp bead electrode detection device according to claim 1, characterized in that: A light shield (108) covering the outside of the photosensitive module (107) is fixedly installed on the top of the first machine (1); a second machine (5) is fixed on the right side of the first machine (1), and a vibrating feeder tray (501) is fixed on the second machine (5); a feeder track (502) extending transversely to the bottom of the first turntable (103) is installed on the vibrating feeder tray (501), and slots (503) matching the rotation trajectory of the suction tube (104) are opened on the front and rear side end walls of one end of the feeder track (502) close to the first turntable (103); a second electric conveyor belt (6) arranged transversely is installed on the left side of the first machine (1), and one end of the second electric conveyor belt (6) extends to the bottom of the first turntable (103); a stacking robot (601) is arranged behind the second electric conveyor belt (6).

3. A SMD LED lamp bead electrode detection device according to claim 1, characterized in that: A chamber (304) fixedly connected to the negative pressure suction port of the vacuum generator (3) is provided in the column (101); the lower end of the rotating shaft (102) is rotatably connected to the chamber (304); and the upper end of the rotating shaft (102) is fixedly connected to the ring tube (301).

4. A SMD LED lamp bead electrode detection device according to claim 3, characterized in that: A first nozzle (305) fixedly connected to the air outlet of the vacuum generator (3) is fixed on the platform column (101), and the first nozzle (305) points to the patch-type lamp bead (2) adsorbed at the bottom of the suction pipe (104) below the photosensitive module (107). A second nozzle (306) is fixedly connected to the first nozzle (305), and a second electric control valve (307) is installed between the second nozzle (306) and the first nozzle (305).

5. The SMD LED lamp bead electrode detection device according to claim 1, characterized in that: The lifting platform (401) is installed in a sleeve (4) for lifting and lowering, and a spring (403) elastically supported at the bottom of the lifting platform (401) is fixed in the sleeve (4). An inclined block (404) arranged between two adjacent straws (104) is fixed at the bottom of the first rotating disk (103).

6. A SMD LED lamp bead electrode detection device according to claim 5, characterized in that: A groove (405) is provided at the bottom of the inclined block (404), and the rotation track of the groove (405) is adapted to the position of the conductive contact piece (402).

7. A SMD LED lamp bead electrode detection device according to claim 2, characterized in that: A first through groove (504) is provided at the bottom of one end of the feeding track (502) close to the first turntable (103), and the width of the first through groove (504) is adapted to the width of the SMD lamp bead (2). A second through groove (505) is provided at the end of the feeding track (502) close to the first turntable (103), and the internal shape of the second through groove (505) is adapted to the inverted SMD lamp bead (2).

8. A SMD LED lamp bead electrode detection device according to claim 7, characterized in that: The height of one end of the feeding track (502) close to the first turntable (103) is higher than that of the other end close to the vibrating feeding tray (501), and a first electric conveyor belt (506) is arranged below the first through slot (504) and the second through slot (505), and the first electric conveyor belt (506) extends into the vibrating feeding tray (501).

9. The SMD LED lamp bead electrode detection device according to claim 1, characterized in that: A disc (7) located directly behind the sleeve (4) is fixed on the first machine (1), and a second turntable (701) is rotatably mounted on the disc (7); a plurality of evenly distributed Ω-shaped cavities (702) are arranged around the second turntable (701), and the Ω-shaped cavities (702) are connected to the outer end wall of the second turntable (701); the bottom of the Ω-shaped cavities (702) is arranged as a through structure; a third through slot (703) located on the rotation track of the Ω-shaped cavities (702) is arranged on the disc (7); a third electric conveyor belt (704) located below the third through slot (703) is fixed on the first machine (1); and a second servo motor (707) is fixedly mounted in the first machine (1).

10. A SMD LED lamp bead electrode detection device according to claim 9, characterized in that: The inner end wall of the Ω-shaped cavity (702) is fixedly covered with a cushioning cotton, and an exhaust hole (705) communicating with a plurality of Ω-shaped cavities (702) is provided at the middle position of the top of the second rotating disk (701), and a filter screen (706) is fixed at the connection point between the exhaust hole (705) and the Ω-shaped cavity (702).

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