A lamp bead pasting device for LED processing

Abstract

The application relates to the technical field of chip mounters, and discloses a lamp bead patching device for LED processing, which mainly comprises a suction nozzle, a cavity and a filtering assembly, the filtering assembly is composed of one filter block, three filter plates and three filter membranes, the two filter plates are fixedly connected through the filter membranes, the uppermost filter plate is fixedly connected with the filter block through the filter membrane, the bottom end of the filter block is fixedly connected with the top end of a filter shaft, and the bottom end of the filter shaft is fixedly connected with a filter pad. During the continuous downward movement of the suction nozzle, the filter pad first contacts the lamp bead and is pushed upward by the lamp bead, thereby driving the filter shaft and the filter block to move upward. Because of the magnetic repulsion force between the filter block and the movable block, the movable rod rotates outward and compresses the movable part, gas in the movable part is discharged outward along the outlet pipe, the vertical hole and the inclined hole, dust attached to the surface of the lamp bead is effectively blown away in time, the possibility of dust entering the suction nozzle is reduced, and the normal use of the suction nozzle is avoided.

Description

Technical Field

[0001] This application relates to the field of chip mounter technology, and more particularly to a chip mounter device for LED processing. Background Technology

[0002] Surface mount technology (SMT) is widely used in LED lighting, displays, and digital products. LED chip mounting refers to the process of attaching LED chips to a PCB substrate using a chip mounter, and then soldering the chips to the substrate using hot air. The chip mounting device mainly consists of a mounting base, a lifting motor, a nozzle, a nozzle holder, a vacuum connector, and a vacuum shunt. The lifting motor controls the up-and-down movement of the nozzle holder, thus moving the nozzle. Simultaneously, the vacuum connector and vacuum shunt control the air extraction, allowing the nozzle to pick up the LED chip, ensuring stable adhesion during transfer. This achieves precise mounting of the LED chip onto the PCB substrate.

[0003] However, existing LED chip mounting devices still have some defects in use: First, since the nozzle adsorbs LED chips by suction, if there is dust on the surface of the LED chips during use, the dust will enter the nozzle. The dust will enter the vacuum connector and vacuum distributor due to the suction, which can easily cause blockage inside the components, resulting in insufficient suction force of the nozzle and affecting the effect of adsorbing LED chips. Summary of the Invention

[0004] This application proposes a chip mounting device for LED processing, which has the advantage of effectively cleaning dust from the surface of the LED chips and the filter plate, thereby solving the problem that dust entering the suction nozzle affects the stable adsorption effect on the LED chips.

[0005] To achieve the above objectives, this application adopts the following technical solution: an LED chip mounting device, comprising a mounting base and a nozzle, wherein a cavity is fixedly embedded in the lower middle part of the nozzle, and an LED chip is adsorbed at the bottom end of the nozzle; a filter assembly is fixedly disposed on the bottom end of the inner wall of the cavity, the filter assembly consisting of a filter block, three filter plates, and three filter membranes; two filter plates are fixedly connected by filter membranes; the lowermost filter plate is fixedly connected to the bottom end of the inner wall of the cavity; the uppermost filter plate is fixedly connected to the filter block by filter membranes; the bottom end of the filter block is fixedly connected to the top end of a filter shaft; the bottom end of the filter shaft is fixedly connected to a filter pad; and the lowermost filter membrane is fixedly disposed above the filter plate. A movable component is fixedly sleeved on the inner wall of the suction nozzle. A movable rod is hinged to the bottom of the movable component near the filter assembly, and a movable block is fixedly connected to the top of the movable rod. The movable rod and the movable block are both fixedly connected to the inner wall of one side of the movable component. The movable rod and the inner wall of the other side of the movable component are fixedly connected by a compression spring. An inlet pipe is fixedly sleeved inside the cavity corresponding to the position of the movable component. An outlet pipe is fixedly sleeved inside the filter plate located below the movable component. One end of the outlet pipe is connected to the movable component, and the other end of the outlet pipe passes through the filter plate, filter membrane, filter block, and is connected to the vertical hole. A vertical hole is opened inside the filter shaft, and an oblique hole is opened at the lower end of the filter shaft. The vertical hole is connected to the outside through the oblique hole.

[0006] Furthermore, a limiting strip is fixedly connected to the inner wall of the suction nozzle located below the cavity, and a limiting groove is formed at the end of the limiting strip near the filter shaft. A lower groove is formed on the outer wall of the filter shaft located above the inclined hole, and the lower groove corresponds to the position of the limiting strip. The interior of the lower groove is fixedly connected to the fixing component. An upper groove is formed on the middle outer wall of the filter shaft, and the interior of the upper groove is fixedly connected to the moving component. A connecting hole is formed inside the filter shaft, and the filter shaft connects the fixing component and the moving component through the connecting hole.

[0007] Furthermore, the fixing element consists of a fixing element, a fixing membrane, and a fixing plug. One side of the fixing body is fixedly connected to one end of the fixing membrane, and the other end of the fixing membrane is fixedly connected to the inner wall of the lower groove. A circular groove is opened in the middle of the inner wall of the lower groove, and a fixing plug is fixedly connected in the circular groove. The fixing plug is movably engaged with the fixing body.

[0008] Furthermore, the movable component consists of a movable membrane, a movable ball, a movable rod, and a movable tube. One end of the movable membrane is fixedly connected to the inner wall of the upper groove, and the other end of the movable membrane is fixedly connected to the movable ball. The inner wall of the movable membrane, which is fixedly connected to the movable ball, is fixedly connected to the movable rod. The movable rod is movably sleeved with the first end of the movable tube, and the tail end of the movable tube is fixedly connected to the inner wall of the upper groove.

[0009] Furthermore, the filter block is circular and has N-type magnetism. A magnetic sensor is installed inside the suction nozzle located above the upper cavity. The filter plate is circular in shape, and the size of the three rings decreases from the outside to the inside and from the bottom to the top. The filter plate is made of rigid material and has multiple small holes. The filter membrane is made of rubber and its size decreases from the outside to the inside and from the bottom to the top. A tension spring is fixedly installed inside the filter membrane and is vertically oriented. The filter pad is made of flexible rubber and its cross-sectional size is larger than that of the filter shaft.

[0010] Furthermore, the movable part is made of rubber, and the inner ring of the movable part is cylindrical when it is not under force, and the inner ring is frustum-shaped when it is under force. There are eight movable rods, which are evenly arranged around the movable part, and the movable block has N-type magnetism.

[0011] Furthermore, both the inlet pipe and the oblique hole are equipped with one-way valves. The gas direction of the inlet pipe is from the outside to the moving part, and the gas direction of the oblique hole is from the vertical hole to the outside. There are four outlet pipes, which are evenly arranged around the filter plate and filter membrane. Each outlet pipe has seven bends. There is one vertical hole, which is vertically arranged. The oblique holes are obliquely arranged, with the inside higher than the outside. There are four oblique holes, which are evenly arranged around the filter shaft.

[0012] Furthermore, there are four limiting strips, and the positions of the limiting strips correspond one-to-one with the positions of the fixing parts. The included angle between two adjacent limiting strips is 90 degrees, and the four limiting strips are spirally arranged on the inner wall of the suction nozzle located below the cavity. The cross-sectional shape of the limiting groove is adapted to the shape of the moving part, and the cross-section of the lower end of the limiting groove protrudes outward toward the filter axis. The limiting groove is spiral-shaped.

[0013] Furthermore, the number of fixing components is four, and the fixing components are filled with liquid. The four fixing components are arranged in a spiral, and the distance between two fixing components is the same as the distance between two limiting strips. The cross-sectional shape of the fixing body is T-shaped, and the fixing body is composed of a vertical plate and a horizontal bar. The outer edges of the upper and lower ends of the vertical plate are arc-shaped, and the end of the horizontal bar that contacts the fixing plug is irregularly spherical. Both the fixing membrane and the fixing plug are made of rubber.

[0014] Furthermore, the number of the movable parts is four, and they are evenly arranged around the filter shaft. The four movable parts are located at the same height and above all the fixed parts. When the movable parts are not in contact with the limiting strip, the movable parts correspond to the opening position of the limiting groove at the top of the limiting strip. The movable membrane is made of rubber, the movable ball is spherical, and the diameter of the movable ball is larger than the width of the movable membrane. The movable rod and the movable tube are made of rigid material, and both are in a horizontal state. Beneficial effects

[0015] This application provides an LED chip mounting device for LED processing. By fixing a filter assembly to the inner wall of the cavity, the filter assembly consists of a filter block, a filter plate, and a filter membrane. The filter block is connected to the filter shaft. During the continuous downward movement of the nozzle to achieve contact and adsorption between the nozzle and the LED, the filter pad first contacts the LED and is pushed upward by the LED, which in turn drives the filter shaft and filter block to move upward. Due to the magnetic repulsion between the filter block and the movable block, the movable rod rotates outward and compresses the movable part, so that the gas in the movable part is discharged outward along the outlet pipe, vertical hole, and oblique hole. This effectively blows away the dust attached to the surface of the LED in time, reduces the possibility of dust entering the nozzle, and avoids affecting the normal use of the nozzle. By moving the filter shaft upward and pushing the filter assembly to deform, the change in the position of the filter block can be determined by the magnetic sensor, and the descent distance of the nozzle can be monitored in real time to ensure that the nozzle accurately adsorbs the lamp beads and prevent the nozzle from moving too far downward and hitting the lamp beads with great force, thus effectively achieving the buffer protection of the lamp beads by the nozzle. By setting a fixed component and a movable component in the lower half of the filter shaft and connecting them internally through a connecting hole, and setting a limiting strip on the inner wall of the nozzle, the limiting strip squeezes the fixed component when the filter shaft moves upward, effectively causing the movable component to expand. This allows the limiting strip to squeeze each movable component individually when the filter shaft moves downward, effectively slowing down the overall descent speed of the filter shaft and ensuring that the descent speed of the filter shaft is less than the upward speed of the nozzle, further improving the protection of the LED beads. At the same time, when the movable component contacts the limiting strip, the limiting groove effectively limits the movement trajectory of the movable component, causing the movable component to drive the filter shaft to rotate a certain degree, thereby achieving the torsion of the filter assembly. This effectively cleans the filter assembly through vibration, further reducing the accumulation of dust inside the nozzle and ensuring the normal use of the nozzle. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0017] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a side view of the three-dimensional structure of the present invention; Figure 2 This is a frontal perspective three-dimensional structural view of the present invention; Figure 3 This is a three-dimensional structural diagram of the external structure of the suction nozzle in this invention; Figure 4 This is a three-dimensional structural diagram of the inside of the suction nozzle in this invention; Figure 5 This is a three-dimensional structural diagram of the cavity location in this invention; Figure 6 For the present invention Figure 5Internal cross-sectional view of the central cavity and local suction nozzle (viewed from the front); Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 9 This is a top-view cross-sectional view of the filter membrane in this invention; Figure 10 This is a three-dimensional structural diagram of the component located below the cavity in this invention; Figure 11 For the present invention Figure 10 A three-dimensional structural diagram of a local filter shaft; Figure 12 For the present invention Figure 10 Top view of the filter shaft located at the moving part; Figure 13 For the present invention Figure 10 Top view of the filter shaft located at the connecting hole; Figure 14 This is a three-dimensional structural diagram of the moving component in this invention; Figure 15 This is a cross-sectional view of the moving part and the filter shaft in this invention; Figure 16 This is a three-dimensional structural diagram of the limiting strip in this invention; Figure 17 This is a partial cross-sectional view of the structure located at the lower end of the limiting strip in this invention.

[0018] In the diagram: 1. Patch holder; 11. Lifting motor; 12. Vertical track; 13. Nozzle holder; 14. Limiting seat; 2. Nozzle; 20. LED bead; 21. Cavity; 22. Vacuum connector; 23. Vacuum splitter; 3. Filter shaft; 31. Filter block; 32. Filter plate; 33. Filter membrane; 34. Filter pad; 4. Moving part; 41. Moving rod; 42. Moving block; 5. Vertical hole; 51. Outlet tube; 52. Inlet tube; 53. Angled hole; 6. Limiting strip; 61. Limiting groove; 7. Fixing part; 71. Fixing body; 72. Fixing membrane; 73. Fixing plug; 8. Connecting hole; 9. Moving part; 91. Moving membrane; 92. Moving ball; 93. Moving rod; 94. Moving tube. Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Example

[0020] Please see Figures 1-3 An LED chip mounting device includes a mounting base 1 and a nozzle 2. A lifting motor 11 is fixedly connected to the top of one side of the mounting base 1, and the bottom of the lifting motor 11 is fixedly connected to a nozzle seat 13. The lifting motor 11 can drive the nozzle seat 13 to move up and down, thereby realizing the up and down movement of the nozzle 2. Vertical rails 12 are fixedly connected to the walls of the mounting base 1 on both sides of the lifting motor 11, and the vertical rails 12 are movably sleeved with one side of the nozzle seat 13. The vertical rails 12 can effectively restrict the nozzle seat 13 and ensure the stability of the movement of the nozzle seat 13. The other side of the nozzle seat 13 is fixedly sleeved with the nozzle 2. A limiting seat 14 is movably sleeved on the outside of the nozzle 2, and the limiting seat 14 is fixedly connected to the nozzle seat 13. The limiting seat 14 can stably control the nozzle 2 and ensure the stability of the movement of the nozzle 2. The upper middle part of the nozzle 2 is fixedly embedded with the vacuum connector 22, and the top of the nozzle 2 is fixedly sleeved with the vacuum distributor 23. The vacuum distributor 23 is fixedly connected to the nozzle seat 13. The vacuum connector 22 and the vacuum distributor 23 can draw air from the nozzle 2, so that the bottom of the nozzle 2 can effectively adsorb the lamp bead 20. The lower middle part of the nozzle 2 is fixedly embedded with the cavity 21, and the upper and lower ends of the cavity 21 are tightly fitted with the nozzle 2 through the sealing ring. This effectively ensures that the cavity 21 can be replaced in time, and also effectively ensures that the gap between the nozzle 2 and the cavity 21 does not affect the adsorption of the lamp bead 20 by the nozzle 2, thus ensuring the stability of the adsorption. The bottom of the nozzle 2 is adsorbed with the lamp bead 20.

[0021] Please see Figures 3-7Furthermore, a filter assembly is fixedly installed at the bottom of the inner wall of the cavity 21. The filter assembly consists of a filter block 31, three filter plates 32, and three filter membranes 33. The filter plates 32 are circular in shape, and the size of the three rings decreases from the outside to the inside and from the bottom to the top, ensuring that the suction function of the nozzle 2 is not changed due to the setting of the filter assembly. The filter plates 32 are made of rigid material and have multiple small holes, ensuring that the filter plates 32 can effectively filter dust. The two filter plates 32 are fixedly connected by filter membranes 33. The filter membranes 33 are made of rubber, and the size of the filter membranes 33 decreases from the outside to the inside and from the bottom to the top, ensuring that the filter membranes 33 can undergo vertical deformation, realizing the transition between compression and tension. A tension spring is fixedly installed inside the filter membranes 33, and the tension spring is vertically arranged, which can effectively ensure that the filter membranes 33 are stretched. The spring force restores the original compressed state, allowing the filter shaft 3 to extend out of the suction nozzle 2 and repeatedly provide a buffering effect on the lamp bead 20. The bottom filter plate 32 is fixedly connected to the bottom of the inner wall of the cavity 21. The top filter plate 32 is fixedly connected to the filter block 31 through the filter membrane 33. The filter block 31 is a circular plate and has N-type magnetism. The suction nozzle 2 located above the upper cavity 21 is equipped with a magnetic sensor, which can effectively monitor the displacement of the filter block 31 and ensure that the suction nozzle 2 can accurately descend to the contact position with the lamp bead 20, ensuring that neither is damaged. The bottom end of the filter block 31 is fixedly connected to the top end of the filter shaft 3. The bottom end of the filter shaft 3 is fixedly connected to the filter pad 34. The filter pad 34 is made of flexible rubber and its cross-sectional size is larger than that of the filter shaft 3, which can effectively protect the lamp bead 20 from damage when the filter pad 34 contacts the lamp bead 20.

[0022] Please see Figures 4-7 , Figure 9 Furthermore, a rubber-made movable part 4 is fixedly fitted onto the inner wall of the suction nozzle 2 above the bottom filter membrane 33. When the movable part 4 is not under stress, its inner ring is cylindrical; when under stress, its inner ring is frustoconical. This deformation of the movable part 4 effectively compresses and discharges air to the four sides of the bottom of the filter shaft 3, blowing away dust from the surface of the LED beads 20. Eight movable rods 41 are hinged to the bottom of the movable part 4 near the filter assembly, and these rods are evenly distributed around the movable part 4. To ensure that the deformation effect of the movable part 4 is the same at all points, the top of the movable rod 41 is fixedly connected to the movable block 42 with N-type magnetism. When the filter block 31 moves upward and the distance between the movable block 42 and the filter block 31 shortens, the magnetic repulsion between the two can effectively push the movable block 42 towards the wall of the suction nozzle 2, so as to realize the rotation of the movable rod 41 and the compression of the movable part 4. The movable rod 41 and the movable block 42 are both fixedly connected to the inner wall of one side of the movable part 4, and the movable rod 41 and the inner wall of the other side of the movable part 4 are fixedly connected by a compression spring.

[0023] Please see Figures 5-7 , Figure 9Furthermore, an inlet pipe 52 is fixedly sleeved inside the cavity 21 corresponding to the position of the movable part 4. A one-way valve is installed inside the inlet pipe 52, and the gas direction of the inlet pipe 52 is from the outside to the inside of the movable part 4. An outlet pipe 51 is fixedly sleeved inside the filter plate 32 located below the movable part 4. One end of the outlet pipe 51 is connected to the movable part 4, and the other end of the outlet pipe 51 passes through the filter plate 32, filter membrane 33, and filter block 31 and is connected to the vertical hole 5. That is, one outlet pipe 51 has seven bends. In summary, there are four outlet pipes 51, which are evenly arranged around the filter plate 32 and filter membrane 33 to ensure that the outlet pipes 51 can smoothly transfer the gas in the movable part 4 to the filter block 31. The filter shaft 3 has an opening inside. There is a vertical hole 5, which is set vertically. The gas in the outlet pipe 51 can be transferred to the oblique hole 53 through the vertical hole 5. The lower end of the filter shaft 3 has an oblique hole 53, which is set at an angle with the inside higher than the outside. There are four oblique holes 53, which are evenly arranged around the filter shaft 3. The gas in the vertical hole 5 can be transferred to the outside of the filter shaft 3 through the oblique holes 53 and blown onto the surface of the lamp bead 20 to effectively clean the dust on the surface of the lamp bead 20. A one-way valve is set inside the oblique hole 53, and the gas direction of the oblique hole 53 is from the vertical hole 5 to the outside. It can effectively transfer the gas outside the nozzle 2 to the outside below the filter shaft 3 after a series of operations, so as to effectively clean the dust on the surface of the lamp bead 20. Example

[0024] Based on Example 1, please refer to Figures 4-6 , Figure 8 , Figure 10 , Figures 12-13 , Figures 16-17 Four limiting strips 6 are fixedly connected to the inner wall of the suction nozzle 2 located below the cavity 21, and the limiting strips 6 correspond one-to-one with the positions of the fixing parts 7. This ensures that when the fixing parts 7 move upward to the positions of the limiting strips 6, they are compressed by the limiting strips 6, thereby transferring the liquid in the fixing parts 7 to the moving parts 9. The included angle between two adjacent limiting strips 6 is 90 degrees, and the four limiting strips 6 are spirally arranged on the inner wall of the suction nozzle 2 located below the cavity 21, effectively ensuring that the distance between any two limiting strips 6 is equal. The end of the limiting strip 6 near the filter shaft 3 has a spiral opening. The limiting groove 61 can effectively drive the moving part 9 to rotate a certain angle when it moves down along the limiting groove 61, thereby realizing the torsional vibration of the filter assembly and cleaning the dust on the filter assembly. The cross-sectional shape of the limiting groove 61 is adapted to the shape of the moving part 9, and the cross-section at the lower end of the limiting groove 61 protrudes outward towards the filter shaft 3. It can descend along the trajectory of the limiting groove 61 when the moving part 9 moves down, and when the moving part 9 is about to leave the limiting groove 61, it pushes the moving part 9 to compress towards the filter shaft 3, thereby realizing the transfer of liquid in the moving part 9.

[0025] Please see Figures 4-6 , Figure 8 , Figures 10-13Furthermore, a lower groove is formed on the outer wall of the filter shaft 3 above the inclined hole 53, and the lower groove corresponds to the position of the limiting strip 6. The lower groove is fixedly connected to the fixing member 7. There are four fixing members 7, and the fixing members 7 are filled with liquid. The alternating deformation of the fixing member 7 and the moving member 9 is achieved by the transfer of liquid. The four fixing members 7 are spirally arranged, and the distance between two fixing members 7 is the same as the distance between two limiting strips 6, ensuring that one fixing member 7 corresponds to one limiting strip 6. The four fixing members 7 can be squeezed at the same time to cause the moving member 9 to expand. The fixing member 7 consists of a fixing member 7, a fixing membrane 72, and a fixing plug 73. The cross-sectional shape of the fixing body 71 is T-shaped, and the fixing body 71 consists of a vertical plate and a horizontal bar. The outer edges of the upper and lower ends of the vertical plate are arc-shaped, which can effectively To ensure that the fixing component 7 can be squeezed into the gap between the filter shaft 3 and the limiting strip 6 by the limiting strip 6, the four inner sides of the fixing body 71 are fixedly connected to one end of the fixing membrane 72, and the other end of the fixing membrane 72 is fixedly connected to the inner wall of the lower groove. The end of the crossbar that contacts the fixing plug 73 is irregularly spherical and can be effectively locked and fixed by the fixing plug 73. A circular groove is opened in the middle of the inner wall of the lower groove, and the fixing plug 73 is fixedly connected in the circular groove. The fixing plug 73 is movably locked and engaged with one end of the crossbar of the fixing body 71. In summary, both the fixing membrane 72 and the fixing plug 73 are made of rubber, and the fixing membrane 72 can deform in the horizontal direction, and the fixing plug 73 can deform in the arc direction, so as to ensure that after the fixing component 7 is compressed and fixed as a whole, it can only be expanded and restored when the liquid in the moving part 9 is transferred into the fixing component 7.

[0026] Please see Figures 4-6 , Figure 8 , Figure 10 , Figure 12 , Figures 14-15Furthermore, the filter shaft 3 has four connecting holes 8 inside, through which the fixing member 7 and the moving member 9 are connected. Each connecting hole 8 corresponds to one fixing member 7 and one moving member 9, effectively ensuring the correspondence between the fixing member 7 and the moving member 9. The outer wall of the middle part of the filter shaft 3 has an upper groove, which is fixedly connected to the moving member 9. There are four moving members 9, evenly arranged around the filter shaft 3, at the same height and above all the fixing members 7. This ensures that the moving member 9 intermittently contacts the limiting strip 6 during descent, reducing the speed of the filter shaft 3. When the moving member 9 is not in contact with the limiting strip 6, it corresponds to the opening position of the limiting groove 61 at the top of the limiting strip 6, ensuring that the moving member 9 accurately aligns with the limiting groove 61 during vertical descent. The rotation of component 9 is achieved by a movable component 91 consisting of a movable membrane 91, a movable ball 92, a movable rod 93, and a movable tube 94. The movable membrane 91, made of rubber, can deform horizontally, and one end of the movable membrane 91 is fixedly connected to the inner wall of the upper groove. The other end of the movable membrane 91 is fixedly connected to the movable ball 92, which is spherical and has a diameter larger than the width of the movable membrane 91. This ensures that the movable ball 92 can be inserted into the limiting groove 61, thereby restricting the entire movable component 9. The movable rod 93 is fixedly connected to the inner wall of the movable membrane 91, which is fixedly connected to the movable ball 92. The movable rod 93 is movably sleeved with the first end of the movable tube 94, and the tail end of the movable tube 94 is fixedly connected to the inner wall of the upper groove. The movable rod 93 and the movable tube 94 are made of rigid material and are both in a horizontal state, which can effectively control the horizontality of the movable component 9 and ensure the stability of the shape of the movable component 9.

[0027] The working principle of the method of using this invention is as follows: When the suction nozzle 2 needs to descend and adsorb the LED bead 20, because part of the filter shaft 3 extends out of the bottom of the suction nozzle 2, the filter pad 34 first contacts the top of the LED bead 20. Then, as the suction nozzle 2 continues to move downward, the filter shaft 3 is pushed and moves upward relative to the suction nozzle 2, thereby causing the filter membrane 33 in the filter assembly to be vertically stretched, increasing the overall size of the filter assembly. During this process, the filter block 31 moves from the bottom of the cavity 21 to the top of the cavity 21. The magnetic sensor receives the change in the position of the filter block 31 and can monitor the change in distance between the suction nozzle 2 and the LED bead 20 in real time, thereby ensuring that the suction nozzle 2 moves accurately to the top of the LED bead 20 and adsorbs the LED bead 20, preventing the suction nozzle 2 from moving downward too far and hitting the LED bead 20, causing damage to both. This effectively achieves the buffer protection of the LED bead 20 by the suction nozzle 2. At the same time, the filter block 31 moves upward and gradually reduces the distance between the filter block 31 and the movable block 42. There is a magnetic repulsion between 31 and the movable block 42, which effectively pushes the originally vertically set movable rod 41 to rotate towards the inner wall of the nozzle 2, thereby reducing the space inside the movable part 4. This allows the air inside the movable part 4 to pass through the outlet pipe 51 into the vertical hole 5, and then be discharged obliquely downward through the inclined hole 53. This blows away the dust attached to the top of the lamp bead 20 in time before the lamp bead 20 is completely covered by the nozzle 2, reducing the possibility of dust entering the nozzle 2 and avoiding affecting the normal use of the nozzle 2. When the bottom of the nozzle 2 is in complete contact with the lamp bead 20, the vacuum connector 22 and the vacuum distributor 23 are activated to effectively remove the air inside the nozzle 2, so that the nozzle 2 can adsorb the lamp bead 20. The transfer of the lamp bead 20 is controlled by the pick-and-place machine. When the lamp bead 20 is placed on the PCB substrate, the vacuum connector 22 and the vacuum distributor 23 release air, causing the nozzle 2 to release the adsorption of the lamp bead 20 and preparing for the nozzle 2 to adsorb the next lamp bead 20. When the suction nozzle 2 is fully in contact with the LED bead 20, the squeezing effect of the limiting strip 6 on the fixing member 7 causes part of the fixing member 7 to be compressed into the lower groove. The liquid in the fixing member 7 is transferred to the corresponding moving member 9 through the connecting hole 8, effectively pushing the moving member 9 outward into a stretched state. Thus, when the suction nozzle 2 releases the LED bead 20 and continues to move upward, the tension of the tension spring in the filter assembly pushes the filter shaft 3 to move downward relative to the suction nozzle 2. During this process, when the moving member 9 moves down to the position of the limiting strip 6 and engages with the limiting groove 61, the filter shaft 3 drives the moving member 9 to continue moving downward, causing the moving member 9 to fall along the trajectory of the limiting groove 61. As a result, when the moving member 9 moves down to the bottom of the limiting strip 6, it is compressed towards the filter shaft 3, effectively causing the liquid in the moving member 9 to be transferred to the fixing member by pressure. Within 7, the fixed part 7 expands and extends outward, preparing for the next stretching of the moving part 9. At the same time, the moving part 9 is affected by the spiral limiting groove 61, causing the filter shaft 3 to rotate at a certain angle, effectively causing the filter shaft 3 to drive the filter assembly to generate a certain angle of torsional vibration. After the moving part 9 is separated from the limiting strip 6, the filter shaft 3 is affected by the tension of the filter membrane 33 and rotates in the opposite direction to restore its original shape, thereby allowing the filter assembly to be fully vibrated and cleaning the dust on the filter assembly in time, further ensuring the normal use of the suction nozzle 2. In addition, since there are four moving parts 9, they can make four contacts with the limiting strip 6 during the continuous downward movement of the filter shaft 3, effectively reducing the downward speed of the filter shaft 3 and ensuring that the downward speed of the filter shaft 3 is less than the upward speed of the suction nozzle 2, further improving the protection of the lamp bead 20.

Claims

1. An LED chip mounting device for LED processing, comprising a mounting base (1) and a nozzle (2), wherein a cavity (21) is fixedly embedded in the middle of the lower end of the nozzle (2), and an LED chip (20) is adsorbed at the bottom end of the nozzle (2), characterized in that: A filter assembly is fixedly installed at the bottom of the inner wall of the cavity (21). The filter assembly consists of a filter block (31), three filter plates (32), and three filter membranes (33). Two filter plates (32) are fixedly connected to each other through filter membranes (33). The filter plate (32) at the bottom is fixedly connected to the bottom of the inner wall of the cavity (21). The filter plate (32) at the top is fixedly connected to the filter block (31) through filter membranes (33). The bottom of the filter block (31) is fixedly connected to the top of the filter shaft (3). The bottom of the filter shaft (3) is fixedly connected to the filter pad (34). A movable part (4) is fixedly sleeved on the inner wall of the suction nozzle (2) above the bottom of the filter membrane (33). A movable rod (41) is hinged to the bottom of the movable part (4) near the filter assembly. A movable block (42) is fixedly connected to the end. The movable rod (41) and the movable block (42) are both fixedly connected to the inner wall of one side of the movable part (4). The movable rod (41) and the inner wall of the other side of the movable part (4) are fixedly connected by a compression spring. An inlet pipe (52) is fixedly sleeved inside the cavity (21) corresponding to the position of the movable part (4). An outlet pipe (51) is fixedly sleeved inside the filter plate (32) located below the movable part (4). One end of the outlet pipe (51) is connected to the movable part (4). The other end of the outlet pipe (51) passes through the filter plate (32), filter membrane (33), filter block (31) and is connected to the vertical hole (5). A vertical hole (5) is opened inside the filter shaft (3). An oblique hole (53) is opened at the lower end of the filter shaft (3). The vertical hole (5) is connected to the outside through the oblique hole (53). The movable part (4) is made of rubber, and the inner ring of the movable part (4) is cylindrical when it is not under force, and the inner ring of the movable part (4) is now frustum-shaped when it is under force. The movable block (42) has N-type magnetism, and the filter block (31) has N-type magnetism.

2. The LED chip mounting device for LED processing according to claim 1, characterized in that: A limiting strip (6) is fixedly connected to the inner wall of the suction nozzle (2) located below the cavity (21). A limiting groove (61) is opened at the end of the limiting strip (6) near the filter shaft (3). A lower groove is opened on the outer wall of the filter shaft (3) above the inclined hole (53), and the lower groove corresponds to the position of the limiting strip (6). The interior of the lower groove is fixedly connected to the fixing member (7). An upper groove is opened on the middle outer wall of the filter shaft (3), and the interior of the upper groove is fixedly connected to the moving member (9). A connecting hole (8) is opened inside the filter shaft (3), and the filter shaft (3) connects the fixing member (7) and the moving member (9) through the connecting hole (8).

3. The LED chip mounting device for LED processing according to claim 2, characterized in that: The fixing component (7) consists of a fixing body (71), a fixing membrane (72), and a fixing plug (73). One side of the fixing body (71) is fixedly connected to one end of the fixing membrane (72), and the other end of the fixing membrane (72) is fixedly connected to the inner wall of the lower groove. A circular groove is provided in the middle of the inner wall of the lower groove, and a fixing plug (73) is fixedly connected in the circular groove. The fixing plug (73) is movably engaged with the fixing body (71).

4. The LED chip mounting device for LED processing according to claim 2, characterized in that: The moving part (9) is composed of a moving membrane (91), a moving ball (92), a moving rod (93), and a moving tube (94). One end of the moving membrane (91) is fixedly connected to the inner wall of the upper groove, and the other end of the moving membrane (91) is fixedly connected to the moving ball (92). The inner wall of the moving membrane (91) fixedly connected to the moving ball (92) is fixedly connected to the moving rod (93). The moving rod (93) is movably sleeved with the first end of the moving tube (94), and the tail end of the moving tube (94) is fixedly connected to the inner wall of the upper groove.

5. The LED chip mounting device for LED processing according to claim 1, characterized in that: The filter block (31) is circular. A magnetic sensor is installed inside the suction nozzle (2) located above the cavity (21). The filter plate (32) is circular in shape, and the size of the three rings decreases from the outside to the inside and from the bottom to the top. The filter plate (32) is made of rigid material and has multiple small holes. The filter membrane (33) is made of rubber and its size decreases from the outside to the inside and from the bottom to the top. A tension spring is fixed inside the filter membrane (33) and is vertically arranged. The filter pad (34) is made of flexible rubber and its cross-sectional size is larger than that of the filter shaft (3).

6. The LED chip mounting device for LED processing according to claim 5, characterized in that: The number of movable rods (41) is eight, and they are evenly arranged around the movable part (4).

7. The LED chip mounting device for LED processing according to claim 1, characterized in that: Both the inlet pipe (52) and the oblique hole (53) are equipped with one-way valves. The gas direction of the inlet pipe (52) is from the outside to the moving part (4), and the gas direction of the oblique hole (53) is from the vertical hole (5) to the outside. There are four outlet pipes (51), which are evenly arranged around the filter plate (32) and the filter membrane (33). Each outlet pipe (51) has seven bends. There is one vertical hole (5), which is vertically arranged. The oblique hole (53) is obliquely arranged, with the inside higher than the outside. There are four oblique holes (53), which are evenly arranged around the filter shaft (3).

8. The LED chip mounting device for LED processing according to claim 2, characterized in that: The number of the limiting strips (6) is four, and the positions of the limiting strips (6) and the fixing parts (7) correspond one-to-one. The included angle between two adjacent limiting strips (6) is 90 degrees, and the four limiting strips (6) are spirally arranged on the inner wall of the suction nozzle (2) located below the cavity (21). The cross-sectional shape of the limiting groove (61) is adapted to the shape of the moving part (9), and the cross-section of the lower end of the limiting groove (61) protrudes outward toward the filter shaft (3). The limiting groove (61) is spiral.

9. The LED chip mounting device for LED processing according to claim 3, characterized in that: The number of the fixing members (7) is four, and the fixing members (7) are filled with liquid. The four fixing members (7) are spirally arranged, and the distance between two fixing members (7) is the same as the distance between two limiting strips (6). The cross-sectional shape of the fixing body (71) is T-shaped, and the fixing body (71) is composed of a vertical plate and a horizontal bar. The outer edges of the upper and lower ends of the vertical plate are arc-shaped, and the end of the horizontal bar that contacts the fixing plug (73) is irregularly spherical. The fixing membrane (72) and the fixing plug (73) are both made of rubber.

10. The LED chip mounting device for LED processing according to claim 4, characterized in that: The number of the movable parts (9) is four, and they are evenly arranged around the filter shaft (3). The four movable parts (9) are located at the same height and above all the fixed parts (7). When the movable part (9) is not in contact with the limiting strip (6), the movable part (9) corresponds to the opening position of the limiting groove (61) at the top of the limiting strip (6). The movable membrane (91) is made of rubber. The movable ball (92) is spherical and the diameter of the movable ball (92) is larger than the width of the movable membrane (91). The movable rod (93) and the movable tube (94) are made of rigid material and are both in a horizontal state.

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