LED feeding device and control method thereof

Abstract

The embodiment of the invention discloses an LED feeding device and a control method thereof.The device comprises a center correcting mechanism, an angle correcting mechanism, a defective product detecting mechanism, a defective product collecting mechanism, a rotary disc and a divider driving the rotary disc to move up and down and rotate, a plurality of suction nozzle assemblies are arranged on the rotary disc, and a grabbing station and a feeding station are correspondingly arranged below the rotary disc; the grabbing station, the center correcting mechanism, the angle correcting mechanism, the defective product detecting mechanism, the defective product collecting mechanism and the feeding station are sequentially arranged below the rotating disc in the rotating direction of the suction nozzle assembly, and a multi-way rotating air pipe connector is arranged on the rotating disc; the suction nozzle assemblies are all communicated with the multi-way rotary air pipe connector and connected with an external air source through the multi-way rotary air pipe connector. The LED material supply device is simple in structure, low in failure rate and capable of continuously detecting and supplying LED materials at a high speed in a circulating mode, the LED supply efficiency is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of LED feeding, and in particular to an LED feeding device and a control method thereof. Background Art

[0002] When grabbing LED materials (SMD packages), existing LED placement machines need to accurately deliver LEDs one by one to the designated position, and the angle of the LED itself cannot be offset before the robot of the LED placement machine can grab it. Existing LED loading equipment uses a vibrating feeding tray to sort and transport the bulk LEDs first, and then successively performs defect detection, center alignment, and angle correction on the LEDs before sending them to the designated position. The efficiency of existing LED placement machines is getting higher and higher, and the material grabbing speed of their robots is also getting faster and faster. However, the existing LED loading equipment has a complex structure, a slow speed of supplying LED materials, and a high failure rate, which cannot meet the needs of LED placement machines. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide an LED feeding device and a control method thereof to increase the supply speed of LED materials and simplify the structure.

[0004] In order to solve the above technical problems, an embodiment of the present invention proposes an LED loading device, including a center alignment mechanism, an angle correction mechanism, a defective detection mechanism, and also includes a defective product collection mechanism, a turntable and a divider for driving the turntable to move up and down and rotate. A plurality of suction nozzle assemblies are provided on the turntable, and a grabbing station and a loading station are correspondingly provided below the turntable. The grabbing station, the center alignment mechanism, the angle correction mechanism, the defective detection mechanism, the defective product collection mechanism, and the loading station are sequentially arranged below the turntable along the rotation direction of the suction nozzle assembly, and a multi-way rotary air pipe joint is provided on the turntable; the suction nozzle assemblies are all connected to the multi-way rotary air pipe joint, and are connected to an external air source through the multi-way rotary air pipe joint.

[0005] Furthermore, the nozzle assembly includes two nozzles spaced at a preset distance, the center alignment mechanism includes two groups of center alignment fixtures for centering the LED, the angle correction mechanism includes two groups of angle correction fixtures for correcting the deflection angle of the LED, and the defect detection mechanism includes two groups of defect detection fixtures for detecting defects of the LED.

[0006] Furthermore, the multi-way rotary air pipe joint is composed of a central shaft and a slip ring, and the inner wall of the slip ring is provided with air holes having the same number as the number of the suction nozzle assemblies, and the air holes are connected to the suction nozzle assemblies one by one, and the slip ring is connected to the divider, and the divider drives the slip ring to rotate synchronously with the turntable.

[0007] Furthermore, the central axis is provided with a first air channel, a second air channel, a third air channel, and a fourth air channel, one end of which is connected to an external air source. The other end of the first air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the center alignment mechanism, the angle correction mechanism, and the defective detection mechanism. The other end of the second air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the material grabbing station. The other end of the third air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the loading station. The other end of the fourth air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the defective product collection mechanism.

[0008] Furthermore, a material cleaning station is provided below the turntable corresponding to the material grabbing station and the material loading station, and a fifth air channel with one end connected to an external air source is provided on the central axis, and the other end of the fifth air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the material cleaning station.

[0009] Furthermore, a sixth air duct with one end connected to an external air source is provided on the central axis, and a holding position is provided below the turntable between any one or more of the corresponding material grabbing station and the center alignment mechanism, between the center alignment mechanism and the angle correction mechanism, between the angle correction mechanism and the defective detection mechanism, between the defective product collection mechanism and the loading station, between the loading station and the material cleaning station, and between the material cleaning station and the material grabbing station, and the other end of the sixth air duct is always connected to the air hole corresponding to the suction nozzle assembly rotated to the top of the holding position.

[0010] Furthermore, solenoid valves are provided in the first air channel, the third air channel and the fourth air channel respectively.

[0011] Further, the first airway, the second airway, the third airway, the fourth airway, and the sixth airway maintain negative pressure, and the fifth airway maintains positive pressure.

[0012] Furthermore, it also includes a vibrating feeding plate, which includes two sets of feeding tracks, and the ends of the feeding tracks are correspondingly arranged at the material grabbing station.

[0013] Accordingly, an embodiment of the present invention further provides a control method for an LED feeding device, comprising: Descending step: the divider drives the turntable to descend, wherein the suction nozzle assembly above the material grabbing station descends to the material grabbing station to grab the material, the suction nozzle assembly above the center correction mechanism puts the sucked LED to the center correction mechanism for center correction, the suction nozzle assembly above the angle correction mechanism puts the sucked LED to the angle correction mechanism for angle correction, the suction nozzle assembly above the defective detection mechanism puts the sucked LED on the defective detection mechanism for defective detection, the suction nozzle assembly above the defective product collection mechanism puts the sucked LED to the defective product collection mechanism, and the suction nozzle assembly above the loading station loads the sucked LED; Ascending step: the divider drives the turntable to ascend, wherein the suction nozzle assembly above the material grabbing station ascends after grabbing the material, the suction nozzle assembly above the center correction mechanism ascends after grabbing the LED that has completed the center correction, the suction nozzle assembly above the angle correction mechanism ascends after grabbing the LED that has completed the angle correction, the suction nozzle assembly above the defective detection mechanism ascends after grabbing the LED that has completed the defective detection, the suction nozzle assembly above the defective product collection mechanism discards the LED that has been detected as defective and then ascends or directly ascends, and the suction nozzle assembly above the loading station ascends after completing the loading; Rotation step: The divider drives the turntable to rotate, so that the nozzle assembly on the turntable rotates to the next position.

[0014] The beneficial effects of the present invention are as follows: the present invention has a simple structure, a low failure rate, and can detect and supply LED materials at a high speed and continuously in a cycle, thereby greatly improving the supply and patch efficiency of LEDs and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the LED feeding device according to an embodiment of the present invention at one angle.

[0016] Figure 2 It is a three-dimensional structural diagram of the LED feeding device according to an embodiment of the present invention from another angle.

[0017] Figure 3 It is a three-dimensional structural diagram of a turntable according to an embodiment of the present invention.

[0018] Figure 4 It is a three-dimensional structural diagram at an angle of the central axis of an embodiment of the present invention.

[0019] Figure 5 It is a three-dimensional structural diagram of the central axis of an embodiment of the present invention at another angle.

[0020] Figure 6 It is a three-dimensional structural diagram of a slip ring according to an embodiment of the present invention.

[0021] Figure 7 It is a three-dimensional structural diagram of the center correction mechanism of an embodiment of the present invention.

[0022] Figure 8 It is a three-dimensional structural diagram of the angle correction mechanism of an embodiment of the present invention.

[0023] Fig. 9 It is a three-dimensional structural diagram of the defect detection mechanism according to an embodiment of the present invention.

[0024] Fig.10 It is a three-dimensional structural diagram of a defective product collection mechanism according to an embodiment of the present invention.

[0025] Fig.11 2 is a three-dimensional structural diagram of a suction nozzle according to an embodiment of the present invention.

[0026] Fig.12 It is a flow chart of a control method of an LED feeding device according to an embodiment of the present invention.

[0027] Description of Figure Numbers LED1, cleaning barrel 2, loading station 3, vibrating feeding tray 4, feeding track 5, center alignment mechanism 10, center alignment fixture 11, driving mechanism A12, angle correction mechanism 20, angle correction fixture 21, driving mechanism B22, defective product detection mechanism 30, defective product detection fixture 31, defective product collection mechanism 40, pipeline 41, recovery bucket 42, turntable 50, suction nozzle assembly 51, suction nozzle body 52, buffer spring 53, air pipe 54, multi-way rotary air pipe joint 60, center shaft 61, slip ring 62, air hole 63, first air duct 64, second air duct 65, third air duct 66, fourth air duct 67, fifth air duct 68, sixth air duct 69, divider 70. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention is further described in detail below in conjunction with the drawings and specific embodiments.

[0029] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0031] Please refer to Figures 1 to 11 The LED loading device of the embodiment of the present invention includes a center correction mechanism, an angle correction mechanism, a defective product detection mechanism, a defective product collection mechanism, a turntable and a divider.

[0032] The centering mechanism, angle correction mechanism, and defect detection mechanism can directly sample the existing mechanism. The divider is used to drive the turntable up and down and rotate, and drive the slip ring to rotate.

[0033] The turntable is provided with multiple groups of nozzle assemblies, preferably 6 groups or more. The multiple groups of nozzle assemblies are arranged around the rotation center of the turntable and are spaced at the same angle. The nozzle assemblies in the embodiment of the present invention are 12 groups, and the interval between the nozzle assemblies is 30°. The divider drives the turntable to rotate 30° at a time.

[0034] There are 6 or more workstations under the turntable, including the material grabbing workstation and the material loading workstation. The centering mechanism, angle correction mechanism, defect detection mechanism, and defective product collection mechanism are arranged in other workstations in sequence. The material grabbing workstation, centering mechanism, angle correction mechanism, defect detection mechanism, defective product collection mechanism, and material loading workstation are arranged in sequence under the turntable along the rotation direction of the nozzle assembly.

[0035] The turntable is provided with a multi-way rotary air pipe joint. The suction nozzle assemblies are all connected to the multi-way rotary air pipe joint and connected to an external air source through the multi-way rotary air pipe joint. The present invention controls each group of suction nozzle assemblies to suck up or put down the LED according to needs.

[0036] As an embodiment, the nozzle assembly includes two nozzles spaced a preset distance apart. The nozzle is a flexible nozzle, which is composed of a nozzle body and a buffer spring disposed on the nozzle body. The width between the two nozzles is consistent with the width between the loading slots of the equipment that receives the LED at the loading station, and can be adjusted according to actual needs. The center correction mechanism includes 2 groups of slots for centering the LED, that is, the center correction mechanism includes 2 groups of center correction fixtures for centering the LED and a driving mechanism A (a driving mechanism such as a cylinder can be used) that drives the center correction fixture to center the LED.

[0037] The angle correction mechanism includes two groups of slots for correcting the deflection angle of the LED, that is, the angle correction mechanism includes two groups of angle correction fixtures for correcting the deflection angle of the LED and a driving mechanism B for driving the angle correction fixture to correct the LED.

[0038] The defective detection mechanism includes two groups of slots for detecting defective LEDs, that is, the defective detection mechanism includes two groups of defective detection fixtures for detecting defective LEDs. Preferably, the defective product collection mechanism includes two groups of pipes for recycling LEDs and a recycling barrel for recycling LEDs, the pipes are connected to the recycling barrel, and the LEDs discarded due to detection of defective LEDs slide from the pipes into the recycling barrel.

[0039] As an implementation method, the multi-way rotary air pipe joint is composed of a central shaft and a slip ring. The inner wall of the slip ring is provided with air holes of the same number as the number of the nozzle assemblies. The air holes are connected to the nozzle assemblies one by one through air pipes, so as to facilitate the control of each nozzle assembly to maintain positive pressure (LED release) or negative pressure (LED suction). The slip ring is connected to the divider, and the divider drives the slip ring to rotate synchronously with the turntable, and the central shaft is fixed.

[0040] As an implementation method, the central axis is provided with a first air channel, a second air channel, a third air channel, and a fourth air channel, and one end of the first air channel, the second air channel, the third air channel, and the fourth air channel is connected to an external air source through an air pipe. Solenoid valves are correspondingly provided in the first air channel, the third air channel, and the fourth air channel, and the first air channel, the third air channel, and the fourth air channel maintain negative pressure, and the corresponding suction nozzle mechanism is independently controlled by the solenoid valve to grab or load the material. The other end of the first air channel opens above the center alignment mechanism, the angle correction mechanism, and the defect detection mechanism corresponding to the outer periphery of the central axis, so it always maintains communication with the air hole corresponding to the suction nozzle assembly rotated to the top of the center alignment mechanism, the angle correction mechanism, and the defect detection mechanism. When the centering mechanism is taking and placing the LED and centering the two LEDs, the angle correction mechanism can also take and place the LED and perform angle correction on the two LEDs at the same time, and the defect detection mechanism can also take and place the LED and perform defect detection on the two LEDs at the same time. Therefore, the present invention enables the suction nozzle assembly above the centering mechanism, the angle correction mechanism, and the defect detection mechanism to share the first air channel, which can simplify the structure, reduce two solenoid valves, reduce costs, and reduce failure rates.

[0041] The other end of the second air channel opens at the outer periphery of the central axis corresponding to the upper part of the material grabbing station, so it is always connected with the corresponding air hole of the suction nozzle assembly rotating above the material grabbing station. Since the suction nozzle assembly above the material grabbing station only needs to continue to grab the material, the second air channel only needs to maintain negative pressure continuously, and does not need to be independently controlled by the solenoid valve.

[0042] The other end of the third airway opens at the outer periphery of the central axis corresponding to the upper part of the loading station, so it always keeps in communication with the corresponding air hole of the suction nozzle assembly rotating above the loading station. The other end of the fourth airway opens at the outer periphery of the central axis corresponding to the upper part of the defective product collection mechanism, so it always keeps in communication with the corresponding air hole of the suction nozzle assembly rotating above the defective product collection mechanism. Since the LED needs to be sucked to the loading station and the defective product collection mechanism and then released, the third and fourth airways need to maintain negative pressure continuously and be independently controlled by electromagnetic valves.

[0043] As an implementation method, a clearing station is provided below the turntable between the corresponding material grabbing station and the loading station. A corresponding suction nozzle assembly is also provided above the corresponding material cleaning station on the turntable. A clearing barrel is provided at the clearing station. A fifth air channel with one end connected to an external air source is provided on the central axis. The other end of the fifth air channel opens at the outer periphery of the central axis corresponding to the position above the clearing station, so it is always connected to the air hole corresponding to the suction nozzle assembly rotated to the top of the clearing station. The clearing station is used to clear the LED that has not been successfully put down at the loading station, so that the suction nozzle assembly rotated to the top of the grabbing station is always in an unloaded state, to prevent the suction nozzle assembly from carrying the LED to the top of the grabbing station for grabbing, and to prevent the occurrence of material jamming, nozzle assembly jamming, and nozzle assembly damage. Therefore, the fifth air channel only needs to maintain positive pressure continuously, without the need for independent control of the solenoid valve, which simplifies the structure, reduces costs, and reduces the failure rate.

[0044] As an implementation method, a sixth airway with one end connected to an external air source is provided on the central axis, and a holding position is provided between any one or more of the following positions below the turntable: between the material grabbing station and the center correction mechanism, between the center correction mechanism and the angle correction mechanism, between the angle correction mechanism and the defective detection mechanism, between the defective product collection mechanism and the loading station, between the loading station and the cleaning station, and between the cleaning station and the material grabbing station. The function of the holding position is to increase the spacing between the mechanisms and facilitate the layout. The embodiment of the present invention is provided with 5 holding positions, which are respectively located between the material grabbing station and the center correction mechanism, between the center correction mechanism and the angle correction mechanism, between the angle correction mechanism and the defective detection mechanism, between the defective product collection mechanism and the loading station, and between the loading station and the cleaning station. There are suction nozzle assemblies on the turntable corresponding to the holding positions one by one. Since the suction nozzle assembly above the holding position only needs to continuously grab the LED, the sixth airway can continuously maintain negative pressure. The other end of the sixth airway is always connected to the air hole corresponding to the suction nozzle assembly rotated to the top of the holding position.

[0045] As an implementation method, the LED loading device further includes a vibrating feeding tray, which includes two sets of feeding tracks, and the ends of the feeding tracks are correspondingly arranged at the material grabbing station. The vibrating feeding tray is an existing common structure, which is used to transport scattered LEDs to the ends of the feeding tracks, and then the suction nozzle assembly grabs the materials.

[0046] Please refer to Fig.12 The control method of the LED loading device of the embodiment of the present invention includes a descending step, an ascending step, and a rotating step.

[0047] Lowering step: the divider drives the turntable to lower, wherein the suction nozzle assembly above the grabbing station lowers to the grabbing station to grab the material, the suction nozzle assembly above the center alignment mechanism places the sucked LED on the center alignment mechanism for center alignment, the suction nozzle assembly above the angle correction mechanism places the sucked LED on the angle correction mechanism for angle correction, the suction nozzle assembly above the defective detection mechanism places the sucked LED on the defective detection mechanism for defective detection, the suction nozzle assembly above the defective product collection mechanism places the sucked LED on the defective product collection mechanism, and the suction nozzle assembly above the loading station loads the sucked LED.

[0048] Rising steps: The divider drives the turntable to rise, wherein the suction nozzle assembly above the material grabbing station rises after grabbing the material, the suction nozzle assembly above the center correction mechanism rises after grabbing the LED that has completed the center correction, the suction nozzle assembly above the angle correction mechanism rises after grabbing the LED that has completed the angle correction, the suction nozzle assembly above the defective detection mechanism rises after grabbing the LED that has completed the defective detection, the suction nozzle assembly above the defective product collection mechanism discards the LED that has been detected as defective and then rises or rises directly, and the suction nozzle assembly above the loading station rises after completing the loading. The suction nozzle assembly above the empty position continues to suck the LED during the process of the turntable descending and ascending.

[0049] Rotation step: The divider drives the turntable to rotate (i.e., if there are 12 sets of nozzle assemblies, the divider drives the turntable to rotate 30°, and the single rotation angle of the divider = 360° / number of nozzle assemblies), so that the nozzle assemblies on the turntable rotate to the next position, and restart the descending step to cycle. Taking 12 sets of nozzle assemblies as an example, the nozzle assembly above the original material grabbing station rotates to the top of the holding space between the material grabbing station and the center correction mechanism after grabbing the LED, and the nozzle assembly above the holding space between the original material grabbing station and the center correction mechanism rotates to the top of the center correction mechanism. The nozzle assembly above the original center correction mechanism rotates to the top of the holding space between the center correction mechanism and the angle correction mechanism, and the nozzle assembly above the holding space between the original center correction mechanism and the angle correction mechanism rotates to the top of the angle correction mechanism. The nozzle assembly above the original angle correction mechanism rotates to the top of the holding space between the angle correction mechanism and the defect detection mechanism, and the nozzle assembly above the holding space between the original angle correction mechanism and the defect detection mechanism rotates to the top of the defect detection mechanism. The suction nozzle assembly above the original defective detection mechanism rotates to the top of the defective product collection mechanism, and the suction nozzle assembly above the original defective product collection mechanism rotates to the top of the empty space between the defective product collection mechanism and the loading station, and the suction nozzle assembly above the empty space between the original defective product collection mechanism and the loading station rotates to the top of the loading station. The suction nozzle assembly above the original loading station rotates to the top of the empty space between the loading station and the cleaning station, and the suction nozzle assembly above the empty space between the original loading station and the cleaning station rotates to the top of the cleaning station. The suction nozzle assembly above the cleaning station rotates to the top of the grabbing station, and the cycle continues. After the LED is grabbed from the grabbing station, the turntable rotates in sequence to center the LED, correct the angle, and transport it to the loading station for loading after the defective detection is qualified (if the detection is defective, the defective LED will be transported to the defective product collection mechanism for throwing).

[0050] At the start of work, the descending step, ascending step, and rotating step are also performed in sequence. In the first few cycles, some nozzle components are unloaded; after the turntable rotates one circle, each nozzle component can continue to work. In this way, the LED can be continuously supplied in a cycle.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED feeding device, comprising a center correction mechanism, an angle correction mechanism, and a defect detection mechanism, characterized in that: It also includes a defective product collection mechanism, a turntable and a divider for driving the turntable to move up and down and rotate. A plurality of suction nozzle assemblies are arranged on the turntable. A material grabbing station and a material loading station are correspondingly arranged below the turntable. The material grabbing station, a center alignment mechanism, an angle correction mechanism, a defective detection mechanism, a defective product collection mechanism and a material loading station are arranged below the turntable in sequence along the rotation direction of the suction nozzle assembly. A multi-way rotary air pipe joint is provided on the turntable. The suction nozzle assemblies are all connected to the multi-way rotary air pipe joint, and are connected to an external air source through the multi-way rotary air pipe joint.

2. The LED feeding device according to claim 1, characterized in that: The nozzle assembly includes two nozzles spaced at a preset distance, the center alignment mechanism includes two sets of center alignment fixtures for centering the LED, the angle correction mechanism includes two sets of angle correction fixtures for correcting the deflection angle of the LED, and the defect detection mechanism includes two sets of defect detection fixtures for detecting defects in the LED.

3. The LED feeding device according to claim 1, characterized in that: The multi-way rotary air pipe joint consists of a central shaft and a slip ring. The inner wall of the slip ring is provided with air holes of the same number as the number of the suction nozzle assemblies. The air holes are connected to the suction nozzle assemblies one by one. The slip ring is connected to the divider, and the divider drives the slip ring to rotate synchronously with the turntable.

4. The LED feeding device according to claim 3, characterized in that: The central axis is provided with a first air channel, a second air channel, a third air channel and a fourth air channel, one end of which is connected to an external air source. The other end of the first air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the center correction mechanism, the angle correction mechanism and the defective detection mechanism. The other end of the second air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the material grabbing station. The other end of the third air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the loading station. The other end of the fourth air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the defective product collection mechanism.

5. The LED feeding device according to claim 4, characterized in that: A material clearing station is provided below the turntable between the corresponding material grabbing station and the material loading station, and a fifth air channel with one end connected to an external air source is provided on the central axis, and the other end of the fifth air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated above the material clearing station.

6. The LED loading device according to claim 5, characterized in that: A sixth air channel with one end connected to an external air source is provided on the central axis, and a holding position is provided below the turntable between any one or more of the corresponding material grabbing station and the center alignment mechanism, between the center alignment mechanism and the angle correction mechanism, between the angle correction mechanism and the defective detection mechanism, between the defective product collection mechanism and the loading station, between the loading station and the material cleaning station, and between the material cleaning station and the material grabbing station, and the other end of the sixth air channel is always connected to the air hole corresponding to the suction nozzle assembly rotated to the top of the holding position.

7. The LED loading device according to claim 6, characterized in that: Solenoid valves are correspondingly arranged in the first air passage, the third air passage and the fourth air passage.

8. The LED feeding device according to claim 7, characterized in that: The first airway, the second airway, the third airway, the fourth airway, and the sixth airway are maintained at negative pressure, and the fifth airway is maintained at positive pressure.

9. The LED loading device according to claim 2, characterized in that: It also includes a vibrating feeding plate, which includes two sets of feeding tracks, and the ends of the feeding tracks are correspondingly arranged at the material grabbing stations.

10. A control method for an LED feeding device according to any one of claims 1 to 9, characterized in that: include: Descending step: the divider drives the turntable to descend, wherein the suction nozzle assembly above the material grabbing station descends to the material grabbing station to grab the material, the suction nozzle assembly above the center correction mechanism puts the sucked LED to the center correction mechanism for center correction, the suction nozzle assembly above the angle correction mechanism puts the sucked LED to the angle correction mechanism for angle correction, the suction nozzle assembly above the defective detection mechanism puts the sucked LED on the defective detection mechanism for defective detection, the suction nozzle assembly above the defective product collection mechanism puts the sucked LED to the defective product collection mechanism, and the suction nozzle assembly above the loading station loads the sucked LED; Ascending step: the divider drives the turntable to ascend, wherein the suction nozzle assembly above the material grabbing station ascends after grabbing the material, the suction nozzle assembly above the center correction mechanism ascends after grabbing the LED that has completed the center correction, the suction nozzle assembly above the angle correction mechanism ascends after grabbing the LED that has completed the angle correction, the suction nozzle assembly above the defective detection mechanism ascends after grabbing the LED that has completed the defective detection, the suction nozzle assembly above the defective product collection mechanism discards the LED that has been detected as defective and then ascends or directly ascends, and the suction nozzle assembly above the loading station ascends after completing the loading; Rotation step: The divider drives the turntable to rotate, so that the nozzle assembly on the turntable rotates to the next position.

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