LED automatic dispensing machine

Abstract

The application relates to the technical field of LED production equipment, in particular to an LED automatic dispensing machine which comprises a rack, a conveying mechanism, a dispensing head and a driving mechanism installed on the rack. The driving mechanism is used for alternately driving the conveying mechanism to convey LED lamp beads or driving a threaded rod to rotate so as to drive the dispensing head to dispense, and the conveying distance of the conveying mechanism and the amount of silver glue extruded by the dispensing head are the same each time. Therefore, the dispensing head does not need to be inducted by an inductor, and the conveying mechanism and the dispensing head are alternately and intermittently driven by the driving mechanism, so that the LED lamp beads are dispensed. The application has the effect of reducing the number of inductors installed on the dispensing head.

Description

Technical Field

[0001] This application relates to the technical field of LED production equipment, and in particular to an automatic LED dispensing machine. Background Technology

[0002] With the rapid development of LED manufacturing technology, LEDs have been widely used in many fields. In the LED chip manufacturing process, adhesive dispensing is required onto the substrate carrying the LED chip. Typically, dispensing is performed using a specialized device called a dispensing machine, which has a needle assembly consisting of multiple dispensing needles. During dispensing, the needle assembly dispenses adhesive to a specific area of ​​the LED chip on the substrate. Once that area is finished, the needle assembly moves to another area to complete the dispensing. This area-based dispensing method reduces LED production efficiency.

[0003] Currently, CN204817065U discloses an LED dispensing machine comprising a base and a frame. The frame has three dispensing heads arranged side-by-side, each head connected to a controller via a cable. Each dispensing head contains a syringe with a retractable lower part, and a dispensing needle with a sensor. A fixed clamp, conveyed by a conveyor belt, is located below each dispensing head. The sensor on the dispensing needle detects the position of the LED beads, and then the controller controls a dispensing cylinder to pressurize and extrude silver paste, thus completing the dispensing of the LED beads.

[0004] Regarding the aforementioned technologies, which utilize sensors to detect LED beads, the sensors' positions can shift due to vibrations from long-term equipment operation. This necessitates periodic adjustments to the sensor positions for regular equipment maintenance, impacting production efficiency. Furthermore, installing sensors on each dispensing head increases the overall complexity of the equipment structure and raises the likelihood of failure. Summary of the Invention

[0005] To improve production efficiency, simplify equipment structure, and thus simplify regular maintenance, this application provides an automatic LED dispensing machine.

[0006] The LED automatic dispensing machine provided in this application adopts the following technical solution:

[0007] An automatic LED dispensing machine, comprising:

[0008] frame;

[0009] A conveying mechanism, mounted on the frame, is used to move multiple LED beads distributed at the same intervals.

[0010] A dispensing head, fixedly connected to the frame, is positioned above the conveying mechanism, and a piston rod is slidably connected inside the dispensing head; and

[0011] A drive mechanism is mounted on the frame. The drive mechanism is used to alternately drive the conveyor to feed and the piston rod to descend. The moving distance of the conveyor belt each time it feeds is equal to the interval between two adjacent LED beads that are evenly arranged along the conveying direction. The distance between each descent of the piston rod is equal.

[0012] By adopting the above technical solution, after the drive mechanism drives the conveying mechanism to transport the LED beads a certain distance, the drive mechanism stops driving the conveying mechanism to move and drives the piston rod to press down, thereby squeezing the silver paste in the dispensing head onto the LED beads.

[0013] The system utilizes a drive mechanism to intermittently drive the conveying mechanism and piston rod, locking the piston rod while conveying LED beads and locking the conveying mechanism while dispensing glue onto the LED beads. Furthermore, the amount of silver glue extruded and the distance the LED beads are conveyed are consistent each time. Therefore, this mechanical structure replaces the operation of multiple sensors, resulting in more precise equipment operation, improved production efficiency, and a simplified overall structure, reducing the failure rate and simplifying regular maintenance.

[0014] Optionally, the conveying mechanism includes a conveying roller, a transmission chain, and a conveyor belt. The conveying roller is rotatably connected to the frame, and the driving mechanism is used to drive the conveying roller to rotate. A conveying gear is fixedly connected to the conveying roller, and the conveyor belt is fixedly connected to the transmission chain. The conveying gear meshes with the transmission chain, and the conveyor belt is provided with a receiving groove for fixing the LED beads.

[0015] By adopting the above technical solution, a drive mechanism drives the conveyor roller to rotate. The rotation of the conveyor roller drives the transmission chain to move via a conveyor gear. The movement of the transmission chain drives the conveyor belt to move, thereby moving the LED beads located in the receiving groove. The meshing of the conveyor gear and the transmission chain makes the transmission of the drive mechanism more stable.

[0016] Optionally, the drive mechanism includes:

[0017] Driver source;

[0018] An incompletely driven gear is coaxially connected to the output shaft of the drive source. The incompletely driven gear meshes with a conveying driven wheel and a dispensing driven wheel. The incompletely driven gear alternately drives the conveying driven wheel and the dispensing driven wheel to rotate. The conveying driven wheel is coaxially driven with the conveying roller.

[0019] A linkage assembly is connected between the piston rod and the dispensing driven wheel.

[0020] By adopting the above technical solution, the active incomplete gear is driven to rotate by a drive source. The meshing and locking between the active incomplete gear and the dispensing driven wheel and the conveying driven wheel ensures that the conveyor belt transports the same distance with each rotation of the active incomplete gear, and the piston rod presses down the same distance each time. Furthermore, when the conveyor belt transports LED beads, the threaded rod is in a locked state, and when the piston rod squeezes glue downwards, the conveying roller is in a locked state.

[0021] Therefore, the LED beads are delivered with equal spacing through a mechanical structure, and the LEDs are dispensed with equal amounts of adhesive during the delivery gaps.

[0022] Optionally, the linkage assembly includes a rotating rod and a threaded rod. The rotating rod is fixedly connected to the dispensing driven wheel. A driving bevel gear is fixedly connected to the rotating rod. A driven bevel gear is installed on the threaded rod. The driving bevel gear meshes with the driven bevel gear. A sliding plate is threadedly connected to the threaded rod. The sliding plate is slidably connected to the frame in a vertical direction. The bottom end of the sliding plate is connected to the piston rod.

[0023] By adopting the above technical solution, the rotation of the dispensing driven wheel is converted into the rotation of the threaded rod by the meshing of the driving bevel gear of the rotating rod and the driven bevel gear of the threaded rod, thereby driving the sliding plate to descend and extruding the piston rod.

[0024] Optionally, a reset drive source is also included, wherein a one-way bearing is connected between the threaded rod and the driven bevel gear, and the one-way bearing enables the driven bevel gear to drive the threaded rod to rotate when the driving bevel gear drives the driven bevel gear to rotate.

[0025] One end of the threaded rod is connected to a position drive source, and the reset drive source is used to drive the threaded rod to rotate in the opposite direction, thereby causing the sliding plate to rise.

[0026] By employing the above technical solution, a reset drive source drives the threaded rod to rotate in the reverse direction, thereby causing the piston rod to rise. Because a one-way bearing connects the threaded rod and the driven bevel gear, when the reset drive source drives the threaded rod to rotate in the reverse direction, the threaded rod and the driven bevel gear are in a slipping state. However, when the driving bevel gear drives the driven bevel gear to rotate, the threaded rod and the driven bevel gear are in a locked state, thus causing the threaded rod to rotate.

[0027] Optionally, a glue storage tank is fixedly connected to the frame, and a glue injection tube is fixedly connected to the dispensing head, the glue injection tube connecting the glue storage tank and the dispensing head.

[0028] By adopting the above technical solution, when the silver paste in the dispensing head is used up, silver paste is replenished into the dispensing head through the dispensing tube and the storage tank.

[0029] Optionally, a plug is provided inside the dispensing head, and an elastic element is fixedly connected to one end of the plug. The elastic element is fixedly connected to the dispensing head and is located on the side of the plug away from the center of the dispensing head. The elastic element is used to press the plug against the dispensing outlet of the dispensing head.

[0030] By adopting the above technical solution, when the piston rod is pressed down, the glue in the dispensing head pushes open the plug and is discharged. When the piston rod rises, the elastic element causes the plug to seal the glue outlet of the dispensing port.

[0031] Optionally, two position sensors are fixedly connected to the frame, and the sliding plate is slidably disposed between the two position sensors.

[0032] By adopting the above technical solution, two position sensors are used to sense the height of the sliding plate, thereby sensing the amount of silver paste in the dispensing head.

[0033] When the sliding plate moves to the higher position sensor, the reset drive source stops working, and the drive source starts working. This causes the active incomplete gear to rotate, and the active incomplete gear alternately drives the conveyor belt feed and the piston rod descent for dispensing.

[0034] When the sliding plate moves to the position sensor at a lower height, the drive source stops working and is reset to normal operation. This allows the rising piston rod to replenish the silver paste.

[0035] Two position sensors are used to replenish the silver paste when the amount is low. After replenishment, the dispensing and delivery of LED beads continue, thus achieving automation.

[0036] Optionally, three dispensing heads are provided, and the three dispensing heads are evenly distributed perpendicular to the length direction of the conveying mechanism. Three receiving grooves are also provided, and each receiving groove corresponds to a dispensing head. The receiving groove is located directly below the corresponding dispensing head.

[0037] By adopting the above technical solution, the setting of three dispensing heads improves the efficiency of dispensing work.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. By coordinating the frame, conveying mechanism, dispensing head, and drive mechanism, and utilizing the intermittent and alternating drive mechanism to drive the conveying mechanism and threaded rod, the conveying and dispensing of LED beads are achieved, thereby reducing the number of sensors installed on the dispensing head.

[0040] 2. By coordinating the active incomplete gear, the conveying driven wheel, the dispensing driven wheel, the active bevel gear, and the driven bevel gear, the intermittent alternating drive of the conveyor belt and the threaded rod is achieved;

[0041] 3. By coordinating the reset drive source, one-way bearing, driven bevel gear, glue reservoir, glue injection tube, plug head, and elastic element, the glue replenishment operation inside the glue dispensing head is achieved. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the LED automatic dispensing machine in this embodiment.

[0043] Figure 2 This is a structural schematic diagram of the LED automatic dispensing machine from another perspective in this embodiment.

[0044] Figure 3 This is a schematic diagram of the dispensing head in this embodiment.

[0045] Figure 4 yes Figure 3 A schematic diagram of the structure of AA.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Frame; 11. Slide chute; 12. Glue storage tank; 13. Glue dispensing pipe; 14. One-way valve; 2. Conveying mechanism; 21. Conveying roller; 211. Conveying gear; 212. Conveying driven wheel; 22. Drive chain; 23. Conveying belt; 231. Receiving groove; 24. Guide roller; 3. Dispensing head; 31. Piston rod; 32. Dispensing needle; 33. Plug head; 34. Elastic element; 4. Drive mechanism; 41. Drive source; 42. Driving incomplete gear; 5. Linkage assembly; 51. Threaded rod; 511. Driven bevel gear; 512. One-way bearing; 513. Reset gear; 52. Rotating rod; 521. Dispensing driven wheel; 522. Driving bevel gear; 53. Sliding plate; 6. Reset drive source; 7. Position sensor. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0049] This application discloses an automatic LED dispensing machine.

[0050] Reference Figure 1The automatic LED dispensing machine includes a frame 1, on which a conveying mechanism 2, a dispensing head 3, and a drive mechanism 4 are mounted. The drive mechanism 4 alternately drives the conveying mechanism 2 to convey LED beads or drives the threaded rod 51 to rotate, thereby driving the dispensing head 3 to dispense adhesive. Each time, the conveying mechanism 2 conveys the LED beads a consistent distance, and the dispensing head 3 extrudes the same amount of silver adhesive. Therefore, no sensor is needed. The dispensing of LED beads is achieved by the alternating and intermittent driving of the conveying mechanism 2 and the dispensing head 3 by the drive mechanism 4. This reduces the dispensing head 3's dependence on sensors, facilitating continuous operation over long periods and improving work efficiency.

[0051] Reference Figure 2 The conveying mechanism 2 includes a conveying roller 21, a transmission chain 22, a conveyor belt 23, and guide rollers 24. Two guide rollers 24 are provided and located on both sides of the conveying roller 21. The axes of the conveying roller 21 and the guide rollers 24 are located on the same horizontal plane and are arranged in parallel. The conveying roller 21 and the guide rollers 24 have the same diameter and are rotatably connected to the frame 1.

[0052] Reference Figure 2 Two conveyor gears 211 are fixedly connected to the conveyor roller 21, and two drive chains 22 are also provided, with each drive chain 22 meshing with a corresponding conveyor gear 211. A conveyor belt 23 is fixedly connected between the two drive chains 22. Several receiving grooves 231 are evenly distributed on the conveyor belt 23 for receiving LED beads. The receiving grooves 231 are evenly arranged in three rows along the axial direction of the conveyor roller 21, with each row of grooves evenly distributed along the conveying direction of the conveyor belt 23.

[0053] Reference Figure 2 The drive mechanism 4 includes a drive source 41 and a linkage component 5. In this application, the drive source 41 is a drive motor. A driving incomplete gear 42 is fixedly connected to the output shaft of the drive source 41. A conveying driven wheel 212 is fixedly connected to one end of the conveying roller 21. The driving incomplete gear 42 meshes with the conveying driven wheel 212. The driving incomplete gear 42 is also connected to the linkage component 5. A dispensing driven wheel 521 is fixedly connected to the linkage component 5. The dispensing driven wheel 521 meshes with the driving incomplete gear 42. Half of the driving incomplete gear 42 consists of gear teeth, and the other half consists of an outwardly convex locking arc. Two inwardly concave locking arcs are respectively provided on the conveying driven wheel 212 and the dispensing driven wheel 521. The two inwardly concave locking arcs are symmetrically arranged about the axis of their own gears.

[0054] Driven by the drive source 41, the active incomplete gear 42 rotates. During the rotation of the active incomplete gear 42, when the teeth of the active incomplete gear 42 mesh with the conveying driven wheel 212, the convex locking arc of the active incomplete gear 42 will mesh with the concave locking arc of the dispensing driven wheel 521. When the active incomplete gear 42 continues to rotate, and the teeth of the active incomplete gear 42 mesh with the teeth of the dispensing driven wheel 521, the convex locking arc of the active incomplete gear 42 will mesh with the concave locking arc of the conveying driven wheel 212.

[0055] Therefore, by continuously driving the active incomplete gear 42 to rotate through the drive source 41, the active incomplete gear 42 alternately drives the conveying driven wheel 212 and the dispensing driven wheel 521 to rotate, and the arc of rotation of the dispensing driven wheel 521 and the conveying driven wheel 212 is the same each time. This ensures that the conveying driven wheel 212 drives the conveying roller 21 to rotate at the same angle each time, thus ensuring that the transmission chain 22 and the transmission belt move the same distance each time. Furthermore, the angle of rotation of the threaded rod 51 driven by the dispensing driven wheel 521 is also the same, thus ensuring that the piston rod 31 descends to the same height each time, and therefore the amount of silver paste extruded by the piston rod 31 each time is also the same.

[0056] Reference Figure 2 The linkage component 5 includes a rotating rod 52 and a threaded rod 51. The rotating rod 52 is rotatably connected to the frame 1. The end of the rotating rod near the drive source 41 is fixedly connected to the dispensing driven wheel 521. Two driving bevel gears 522 are fixedly connected to the rotating shaft. Two threaded rods 51 are provided, both vertically positioned and rotatably connected to the frame 1. Driven bevel gears 511 are mounted on the threaded rods 51. There are two driven bevel gears 511, each corresponding to a threaded rod 51, and each driven bevel gear 511 meshes with a driving bevel gear 522. Through the meshing of the driving bevel gears 522 and the driven bevel gears 511, the lateral rotation of the rotating rod 52 is converted into the vertical rotation of the threaded tube.

[0057] Reference Figure 2 A one-way bearing 512 is installed between the threaded rod 51 and the driven bevel gear 511. When the driving bevel gear 522 drives the driven bevel gear 511 to rotate, the one-way bearing 512 is locked, thereby driving the threaded rod 51 to rotate.

[0058] Reference Figure 2A reset gear 513 is mounted on the top of the threaded rod 51, and the reset gear 513 and the threaded rod 51 are connected by a one-way bearing 512. A reset drive source 6, which is a reset motor, is mounted on the top of the frame 1, and its output end meshes with the reset gear 513. The reset drive source 6 drives the reset gear 513 to rotate, which in turn drives the threaded rod 51 to rotate, causing the piston rod 31 to slide upwards. At this time, when the threaded rod 51 is resetting and rotating, the one-way bearing 512 connected to the driven bevel gear 511 is slipping.

[0059] Reference Figure 2 A sliding plate 53 is threadedly connected to the threaded rod 51, and the bottom end of the sliding plate 53 is fixedly connected to the piston rod 31. A vertical groove 11 is formed on the frame 1, and both ends of the sliding plate 53 are inserted into the groove 11 of the frame 1, allowing the sliding plate 53 to slide vertically. The bottom end of the sliding plate 53 is connected to three piston rods 31. Three dispensing heads 3 are provided, each corresponding to one of the three piston rods 31. The three dispensing heads 3 are spaced equally and distributed along the length of the sliding plate 53.

[0060] Reference Figure 2 The sliding plate 53 is threadedly connected to two threaded rods 51. Through the force of the two threaded rods 51 and the guidance of the sliding groove 11, the sliding of the sliding plate 53 is more stable and the force is more uniform.

[0061] Reference Figure 2 , Figure 3 and Figure 4 The dispensing head 3 has a dispensing needle 32 fixedly connected to its lowest end. A plug 33 is installed inside the dispensing head 3. An elastic element 34 is fixedly connected to the end of the plug 33 near the dispensing needle 32. In this application, the elastic element 34 is a spring, fixedly connected inside the dispensing head 3. The spring's elasticity blocks the dispensing head 33 at the dispensing outlet, ensuring that the silver paste inside the dispensing head 3 only passes through the outlet and is applied to the LED beads via the dispensing needle 32 when the piston rod 31 is pressed downwards. When the piston rod 31 rises, the plug 33 seals the outlet, reducing the possibility of external air entering the dispensing head 3.

[0062] Reference Figure 1 A glue storage tank 12 is fixedly connected to the frame 1. A glue injection tube 13 connects the glue storage tank 12 and the glue injection head 3, with the injection tube 13 positioned near the bottom of the glue injection head 3. This lower position of the injection tube 13 facilitates the injection of silver glue into the glue injection head 3. A one-way valve 14 is fixedly connected to the injection tube 13, ensuring that the silver glue in the injection tube 13 can only flow through the glue storage tank 12 into the glue injection head 3.

[0063] Reference Figure 2 Two position sensors 7 are fixedly connected to the frame 1. The two position sensors 7 are located on the same side of the frame 1 and are located at the two ends of the vertical sliding range of the sliding plate 53.

[0064] Two position sensors 7 are respectively installed at the lowest and highest points of the vertical movement of the sliding plate 53. When the sliding plate 53 is at the highest point of the sensor, the higher position sensor 7 senses the sliding plate 53, causing the reset drive source 6 to stop working and drive the drive source 41 to rotate, thereby driving the conveying mechanism 2 and the dispensing head 3 to move alternately. During this process, the position of the sliding plate 53 continuously descends. When the position of the sliding plate 53 descends to the position of the lower sensor, the lower position sensor senses the sliding plate 53, causing the drive source 41 to stop working and drive the reset motor to move, thereby driving the threaded rod 51 to rotate in the opposite direction, thereby causing the sliding plate 53 to continuously rise until it rises to the higher position sensor, and so on.

[0065] The implementation principle of an automatic LED dispensing machine according to an embodiment of this application is as follows: LED beads are transferred to the receiving groove 231, and the equipment is turned on. At this time, the drive source 41 drives the active incomplete gear 42 to rotate. The rotation of the active incomplete gear 42 alternately drives the conveyor belt 23 and the piston rod 31 to move. Thus, when the LED beads are moving, the piston rod 31 locks and stops moving; when the LED beads stop moving, the active incomplete gear 42 drives the piston rod 31 to press down, thereby dispensing silver paste onto the LED beads. Each rotation of the active incomplete gear 42 moves the receiving groove 231 on the conveyor belt 23 by one notch, and causes the dispensing head 3 to perform one dispensing operation. By continuously driving the active incomplete gear 42 to rotate through the drive source 41, an equal amount of silver paste is accurately dispensed onto each LED bead. Therefore, there is no need to install a sensor on the dispensing head 3 to sense the position of the LED beads; the mechanical structure can accurately and stably complete the dispensing operation.

[0066] This also prevents the sensor from shifting after a period of operation, thus avoiding inaccurate positioning and the need for adjustment. Removing the sensor from the dispensing head 3 simplifies the entire device's wiring, resulting in a simplified device design.

[0067] When the drive motor continues to work, causing the sliding plate 53 to continuously descend to the lower position sensor 7, the lower position sensor 7 controls the drive source 41 to stop working and drives the reset drive source 6 to work. The reset drive source 6 drives the reset gear 513 to rotate, thereby causing the threaded rod 51 to reverse. At this time, the sliding plate 53 rises, and the sliding plate 53 drives the piston rod 31 to rise. During the process of the piston rod 31 rising, the dispensing head 3 draws silver glue from the glue storage tank 12 through the glue injection tube 13, thereby replenishing the silver glue in the dispensing head 3.

[0068] When the sliding plate 53 rises to the higher position sensor 7, the higher position sensor 7 controls the reset drive source 6 to stop working and drives the drive source 41 to work, so that the active incomplete gear 42 drives the conveyor belt 23 and the dispensing head 3 to work alternately.

[0069] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic LED dispensing machine, characterized in that, include: frame; A conveying mechanism, mounted on the frame, is used to move multiple LED beads distributed at the same intervals. A dispensing head is fixedly connected to the frame and is located above the conveying mechanism. A piston rod is slidably connected inside the dispensing head. as well as A drive mechanism, mounted on the frame, alternately drives the conveyor mechanism to feed and the piston rod to descend. The conveyor mechanism moves a distance equal to the interval between two adjacent LED beads evenly arranged along the conveying direction each time it feeds, and the piston rod descends at equal intervals each time. The conveyor mechanism includes a conveyor roller, a transmission chain, and a conveyor belt. The conveyor roller is rotatably connected to the frame, and the drive mechanism drives the conveyor roller to rotate. A conveyor gear is fixedly connected to the conveyor roller, and the conveyor belt is fixedly connected to the transmission chain. The conveyor gear meshes with the transmission chain, and the conveyor belt has receiving grooves for fixing the LED beads. The drive mechanism includes: Driver source; An incompletely driven gear is coaxially connected to the output shaft of the drive source. The incompletely driven gear meshes with a conveying driven wheel and a dispensing driven wheel. The incompletely driven gear alternately drives the conveying driven wheel and the dispensing driven wheel to rotate. The conveying driven wheel is coaxially driven with the conveying roller. A linkage assembly is connected between the piston rod and the dispensing driven wheel. The linkage assembly includes a rotating rod and a threaded rod. The rotating rod is fixedly connected to the dispensing driven wheel. A driving bevel gear is fixedly connected to the rotating rod, and a driven bevel gear is mounted on the threaded rod. The driving bevel gear meshes with the driven bevel gear. A sliding plate is threadedly connected to the threaded rod. The sliding plate is slidably connected to the frame along a vertical direction, and the bottom end of the sliding plate is connected to the piston rod. Half of the driving incomplete gear is a tooth, and the other half is an outwardly convex locking arc. Two inwardly concave locking arcs are respectively provided on the conveying driven wheel and the dispensing driven wheel. The two inwardly concave locking arcs are symmetrically arranged about the axis of their own gears. The assembly also includes a reset drive source. A one-way bearing is connected between the threaded rod and the driven bevel gear. The one-way bearing allows the driven bevel gear to drive the threaded rod to rotate when the driving bevel gear drives the driven bevel gear to rotate. One end of the threaded rod is connected to a reset drive source, which drives the threaded rod to rotate in the opposite direction, thereby causing the sliding plate to rise.

2. The LED automatic dispensing machine according to claim 1, characterized in that: A glue storage tank is fixedly connected to the frame, and a glue injection tube is fixedly connected to the dispensing head, the glue injection tube connecting the glue storage tank and the dispensing head.

3. The LED automatic dispensing machine according to claim 1, characterized in that: The dispensing head is provided with a plug, and an elastic element is fixedly connected to one end of the plug. The elastic element is fixedly connected to the dispensing head and is located on the side of the plug away from the center of the dispensing head. The elastic element is used to press the plug against the dispensing outlet of the dispensing head.

4. The LED automatic dispensing machine according to claim 1, characterized in that: Two position sensors are fixedly connected to the frame, and the sliding plate is slidably disposed between the two position sensors.

5. The LED automatic dispensing machine according to claim 1, characterized in that: The dispensing head is provided in three parts, which are evenly distributed perpendicular to the length direction of the conveying mechanism. There are also three receiving grooves, which correspond one-to-one with the dispensing head and are located directly below the corresponding dispensing head.

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