Dispensing mechanism for LED lamp beads

Abstract

A kind of dispensing mechanism for LED lamp bead, including rack;Material storage mechanism includes glue storage bottle, the bottom of glue storage bottle is equipped with discharge port, the inside of bottle wall of glue storage bottle is equipped with heat insulation layer, inert gas is filled in heat insulation layer, the inside of bottle wall of glue storage bottle is also equipped with temperature control component, temperature control component is located in the inside of heat insulation layer close to the cavity of glue storage bottle;Discharge mechanism includes dispensing valve, the bottom of dispensing valve is detachably connected with dispensing needle nozzle, dispensing valve is communicated with glue storage bottle;Movement mechanism includes X-axis movement component, Y-axis movement component and Z-axis movement component, movement mechanism is fixedly connected with rack, material storage mechanism and discharge mechanism are connected with the output end of movement mechanism;Positioning system includes camera, camera is fixed to the bottom of dispensing valve, camera is close to dispensing needle nozzle setting, camera is used to identify fiducial point on substrate.The present application has the effect of improving dispensing efficiency, optimizing dispensing quality.

Description

Technical Field

[0001] This application relates to the field of dispensing equipment technology, and in particular to a dispensing mechanism for LED beads. Background Technology

[0002] In the mass production process of LED chips, dispensing is one of the core steps in fixing the LED chips. Existing dispensing mechanisms for LED chips generally suffer from problems such as uneven dispensing, nozzle blockage, or glue overflow due to the susceptibility of the glue to external temperature fluctuations during storage. Furthermore, most equipment uses a single-channel glue supply design, which makes it difficult to achieve precise mixing of multiple glue components and results in poor adaptability. In addition, manual calibration or simple mechanical positioning can easily lead to insufficient accuracy in the identification of reference points and large deviations in the dispensing position. Therefore, further improvements are needed. Summary of the Invention

[0003] To improve dispensing efficiency and optimize dispensing quality, this application provides a dispensing mechanism for LED beads.

[0004] This application provides a dispensing mechanism for LED beads, which adopts the following technical solution: A dispensing mechanism for LED chips, comprising: frame; Storage mechanism: The storage mechanism includes a glue storage bottle, the bottom of which has a discharge port. The inside of the bottle wall of the glue storage bottle is provided with a heat insulation layer, which is filled with inert gas. The inside of the bottle wall of the glue storage bottle is also provided with a temperature control component, which is located on the inner side of the heat insulation layer near the cavity of the glue storage bottle. Dispensing mechanism: The dispensing mechanism includes a dispensing valve, the bottom of which is detachably connected to a dispensing nozzle, and the dispensing valve is connected to a glue storage bottle; Motion mechanism: The motion mechanism includes an X-axis motion component, a Y-axis motion component and a Z-axis motion component. The motion mechanism is fixedly connected to the frame. The material storage mechanism and the material discharge mechanism are connected to the output end of the motion mechanism. Positioning system: The positioning system includes a camera, which is fixed to the bottom of the dispensing valve and positioned close to the dispensing needle nozzle. The camera is used to identify reference points on the substrate.

[0005] By adopting the above technical solution, the glue storage bottle is used to store glue. The heat insulation layer effectively reduces the impact of external temperature on the glue inside the storage bottle, reduces heat exchange, and actively regulates the glue temperature through the temperature control component to ensure that the glue viscosity is suitable and stable, reducing uneven dispensing or clogging problems caused by temperature fluctuations, and extending service life. The dispensing valve of the dispensing mechanism is connected to the glue storage bottle, and the glue flows from the storage bottle into the dispensing valve to replenish the dispensing valve. The storage mechanism provides a stable glue supply to the dispensing mechanism. The dispensing nozzle is detachable to adapt to the dispensing needs of LED beads of different specifications. The camera is set close to the dispensing nozzle to improve dispensing efficiency and quality and reduce human error. All parts work together to realize the automation and precise control of the dispensing process, improving production efficiency and dispensing accuracy.

[0006] Optionally, the temperature control component includes a temperature sensor and a heating coil. The heating coil is evenly wound inside the side wall of the glue storage bottle, and the temperature sensor is fixed on the inner wall of the glue storage bottle. The temperature sensor is located near the discharge port.

[0007] By adopting the above technical solution, the temperature sensor monitors the temperature of the glue near the dispensing port in the glue storage bottle in real time and feeds back the temperature information. The heating coil heats the glue storage bottle evenly according to the feedback information from the temperature sensor, ensuring that the glue temperature is uniform and stable, preventing the glue from cooling and solidifying, ensuring the smoothness and consistency of dispensing, and improving the reliability and repeatability of dispensing.

[0008] Optionally, a first discharge valve is detachably installed on the top of the glue storage bottle. The first discharge valve has a first liquid chamber that is connected to the cavity of the glue storage bottle. A first driving component is fixedly installed on the upper end of the first discharge valve. A first push rod is fixedly installed on the output end of the first driving component. The first push rod is used to squeeze the liquid in the first liquid chamber into the glue storage bottle.

[0009] By adopting the above technical solution and setting a first feeding valve, the glue can be automatically added and quantitatively supplied, reducing manual intervention and improving production efficiency. At the same time, the detachable design facilitates maintenance and cleaning.

[0010] Optionally, a second discharge valve can be detachably installed above the glue storage bottle. The second discharge valve has a second liquid chamber, which is connected to the cavity of the glue storage bottle. A second driving component is fixedly installed at the upper end of the second discharge valve, and a second push rod is fixed at the output end of the second driving component. The second push rod is used to squeeze the liquid in the second liquid chamber into the glue storage bottle. The first discharge valve and the second discharge valve are symmetrically arranged about the central axis of the glue storage bottle.

[0011] By adopting the above technical solution, dual-path glue supply is achieved by setting a second dispensing valve and a first dispensing valve. When the second dispensing valve and the first dispensing valve contain different liquids, the liquids are evenly mixed in the glue storage bottle, increasing the glue supply and flexibility. When the second dispensing valve and the first dispensing valve contain the same liquid, the glue supply can be increased. The symmetrical design of the second dispensing valve and the first dispensing valve improves the consistency of glue mixing and enhances the continuity and stability of dispensing.

[0012] Optionally, a connecting cover is detachably installed on the upper end of the glue storage bottle. The first and second discharge valves are detachably connected to the connecting cover. A third driving component is also fixed at the central axis of the glue storage bottle corresponding to the connecting cover. A stirring shaft is fixed at the output end of the third driving component. The stirring shaft extends into the glue storage bottle. A large paddle is also fixed near the connecting cover on the stirring shaft.

[0013] By adopting the above technical solution, the design of the connecting cover makes the installation and disassembly of the first and second discharge valves more convenient. At the same time, the third drive unit drives the stirring shaft to rotate, and the liquid falling into the glue storage bottle from the first and second discharge valves falls onto the large paddle. The same large paddle is circulated and caught by the rotation of the third drive unit. The liquid is initially mixed above the large paddle, and the mixed liquid then falls evenly into the glue storage bottle from the top of the large paddle, effectively guiding and mixing the newly added glue, improving mixing efficiency and glue uniformity, and further improving the quality and stability of dispensing.

[0014] Optionally, the end of the stirring shaft away from the connecting cover is located near the bottom of the storage bottle, and several small paddles are also fixed on the stirring shaft.

[0015] By adopting the above technical solution, the stirring shaft extends to the bottom of the glue storage bottle and is equipped with multiple small paddles, which further enhances the stirring effect of the glue in the storage bottle, avoids glue deposition or uneven mixing at the bottom as much as possible, and makes the temperature and composition of the glue in the storage bottle more uniform, thereby improving the dispensing accuracy and consistency.

[0016] Optionally, the upper end of the dispensing valve is provided with a fourth driving member, the output end of the fourth driving member is engaged with a screw, and a pressure head is fixed at the end of the screw away from the fourth driving member. The pressure head is used to push the glue out of the dispensing needle nozzle.

[0017] By adopting the above technical solution, the fourth drive component, screw, and pressure head together form a screw valve. The fourth drive component drives the screw to control the amount of glue dispensed, thereby improving the stability and accuracy of the glue dispensed, preventing glue from overflowing from the cup or insufficient glue, and enhancing the controllability and stability of the equipment.

[0018] Optionally, the positioning system includes an illumination element fixed to the bottom of the dispensing valve and positioned close to the camera.

[0019] By adopting the above technical solution, by placing the lighting component close to the camera, stable and sufficient lighting is provided, reducing recognition errors caused by insufficient or uneven lighting, improving the clarity and contrast of the image when the camera identifies the reference point, thereby improving the accuracy of the dispensing position and enhancing the dispensing quality.

[0020] Optionally, the positioning system includes an image processing system and a motion control system. The image processing system is electrically connected to the camera and the motion control system. The motion control system is electrically connected to the motion mechanism. The camera transmits recognition information to the image processing system, and the recognition information is processed by the image processing system and then transmitted to the motion control system.

[0021] By adopting the above technical solutions, automatic calibration and precise motion control can be achieved, improving the alignment between the dispensing position and the reference point, enhancing dispensing accuracy and production efficiency, and reducing human error and labor intensity.

[0022] Optionally, the dispensing valve is further provided with a negative pressure system, which is located at the end of the dispensing valve away from the dispensing needle nozzle.

[0023] By adopting the above technical solution, the negative pressure system is started after dispensing, so that the dispensing valve is in a negative pressure environment, which can prevent the glue from trailing or dripping at the end of the dispensing nozzle as much as possible.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By adding a heat insulation layer and temperature control components to the glue storage bottle, the influence of external temperature on the glue in the storage bottle is reduced, and the glue temperature is actively adjusted by the temperature control components to ensure that the glue viscosity is suitable and stable, thereby reducing uneven dispensing or clogging caused by temperature fluctuations and extending service life. 2. By setting a second discharge valve and a first discharge valve, dual-path glue supply is achieved. When the second discharge valve and the first discharge valve contain different liquids, the liquids are evenly mixed in the glue storage bottle, increasing the glue supply and flexibility. When the second discharge valve and the first discharge valve contain the same liquid, the glue supply can be increased. The symmetrical design of the second discharge valve and the first discharge valve improves the consistency of glue mixing and enhances the continuity and stability of dispensing. 3. The positioning system is equipped with a camera and an illumination device. The camera transmits the identification information to the image processing system. After the identification information is processed by the image processing system, it is transmitted to the motion control system to improve the dispensing accuracy. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the overall structure from another angle in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures: 10. Frame; 20. Motion mechanism; 31. Glue storage bottle; 32. Connecting cap; 33. First discharge valve; 34. Second discharge valve; 35. Third drive component; 41. Pressure head; 42. Dispensing needle; 43. Screw; 44. Fourth drive component. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] This application discloses a dispensing mechanism for LED beads.

[0030] Reference Figure 1 and Figure 2 A dispensing mechanism for LED beads includes a frame 10 and a storage mechanism. The storage mechanism includes a glue storage bottle 31, which stores glue and replenishes it in a timely manner for the dispensing mechanism, providing a stable glue supply. The bottom of the glue storage bottle 31 has a discharge port. The inner wall of the glue storage bottle 31 is provided with a heat insulation layer filled with inert gas. The heat insulation layer effectively reduces the influence of external temperature on the glue in the glue storage bottle 31 and reduces heat exchange. The inner wall of the glue storage bottle 31 is also provided with a temperature control component, which is located on the inner side of the heat insulation layer near the cavity of the glue storage bottle 31. The temperature control component actively adjusts the glue temperature to ensure that the glue viscosity is suitable and stable, reducing uneven dispensing or clogging caused by temperature fluctuations and extending service life.

[0031] A dispensing mechanism for LED beads further includes a discharging mechanism and a motion mechanism 20. The discharging mechanism is equipped with a dispensing valve, and a dispensing nozzle 42 is detachably connected to the bottom of the dispensing valve, which facilitates the replacement of dispensing nozzles 42 of different specifications to meet the dispensing requirements of LED beads of different specifications. The dispensing valve is connected to a glue storage bottle 31, and glue flows from the glue storage bottle 31 into the dispensing valve to replenish the glue. The motion mechanism 20 includes an X-axis motion component, a Y-axis motion component, and a Z-axis motion component. The motion mechanism 20 is fixedly connected to the frame 10. The storage mechanism and the discharging mechanism are connected to the output end of the motion mechanism 20 to facilitate dispensing at different dispensing points on the substrate.

[0032] A dispensing mechanism for LED beads further includes a positioning system and a motion control system. The positioning system is electrically connected to the motion control system. The positioning system includes a camera, which is fixed to the bottom of the dispensing valve and positioned close to the dispensing nozzle 42. The camera is used to identify reference points on the substrate. The camera identifies the reference points and transmits the identification information back to the motion control system to correct the running error of the motion mechanism 20, improve dispensing efficiency and quality, reduce human error, realize the automation and precise control of the dispensing process, and improve production efficiency and dispensing accuracy.

[0033] The temperature control component includes a temperature sensor and a heating coil. The heating coil is evenly wound inside the side wall of the glue storage bottle 31. The temperature sensor is fixed on the inner wall of the glue storage bottle 31 and is located near the dispensing port. The temperature sensor monitors the temperature of the glue near the dispensing port in the glue storage bottle 31 in real time and feeds back the temperature information. The heating coil heats the glue storage bottle 31 evenly according to the feedback information from the temperature sensor to ensure that the glue temperature is uniform and stable, prevent the glue from cooling and solidifying as much as possible, ensure the smoothness and consistency of dispensing, and improve the reliability and repeatability of dispensing.

[0034] A first feeding valve 33 is detachably installed on the top of the glue storage bottle 31. The first feeding valve 33 has a first liquid chamber, which is connected to the cavity of the glue storage bottle 31. A first driving component is fixedly installed on the upper end of the first feeding valve 33. A first push rod is fixed on the output end of the first driving component. The first push rod is used to squeeze the liquid in the first liquid chamber into the glue storage bottle 31, so as to realize the automatic addition and quantitative supply of glue, reduce manual intervention, improve production efficiency, and the detachable design facilitates maintenance and cleaning.

[0035] A second dispensing valve 34 can be detachably installed above the glue storage bottle 31. The second dispensing valve 34 has a second liquid chamber that is connected to the cavity of the glue storage bottle 31. A second driving component is fixedly installed at the upper end of the second dispensing valve 34, and a second push rod is fixed at the output end of the second driving component. The second push rod is used to squeeze the liquid in the second liquid chamber into the glue storage bottle 31. The first dispensing valve 33 and the second dispensing valve 34 are symmetrically arranged about the central axis of the glue storage bottle 31. The second dispensing valve 34 and the first dispensing valve 33 cooperate to achieve dual-path glue supply. When the second dispensing valve 34 and the first dispensing valve 33 contain different liquids, the liquids are evenly mixed in the glue storage bottle 31, increasing the glue supply and flexibility. When the second dispensing valve 34 and the first dispensing valve 33 contain the same liquid, the glue supply to the glue storage bottle 31 can also be increased. The symmetrical design of the second dispensing valve 34 and the first dispensing valve 33 improves the consistency of glue mixing and ensures the continuity and stability of dispensing as much as possible.

[0036] A connecting cover 32 is detachably installed on the upper end of the glue storage bottle 31. The first discharge valve 33 and the second discharge valve 34 are detachably connected to the connecting cover 32, making the installation and removal of the first discharge valve 33 and the second discharge valve 34 more convenient. When the first discharge valve 33 and the second discharge valve 34 are not needed, the connecting cover 32 can be replaced with a cover without mounting holes. When only one discharge valve needs to be installed, the connecting cover 32 can be replaced with a cover with a single mounting hole design. A third drive component 35 is also fixed to the connecting cover 32 at the central axis of the glue storage bottle 31. A stirring shaft is fixed to the output end of the third drive component 35. The stirring shaft extends into the glue storage bottle 31 and is close to the connecting cover 32. 2. A large paddle is also fixed, with its water-facing surface facing the first discharge valve 33 and the second discharge valve 34. The large paddle is tilted downwards, and the liquid falling into the glue storage bottle 31 from the first discharge valve 33 and the second discharge valve 34 falls onto the large paddle. The same large paddle is cyclically caught by the rotation of the third drive component 35. The liquid is initially mixed above the large paddle, and the mixed liquid then falls evenly into the glue storage bottle 31 from the top of the large paddle, effectively guiding and mixing the newly added glue, improving mixing efficiency and glue uniformity, and further improving the quality and stability of dispensing.

[0037] The end of the stirring shaft away from the connecting cover 32 is located near the bottom of the glue storage bottle 31. Several small paddles are also fixed on the stirring shaft. The small paddles are evenly distributed on the stirring shaft along the extension direction of the stirring shaft, which further enhances the stirring effect on the glue in the glue storage bottle 31, and avoids the glue from settling at the bottom or being mixed unevenly as much as possible. This makes the temperature and composition of the glue in the glue storage bottle 31 more uniform and consistent, and improves the dispensing accuracy and consistency.

[0038] The upper end of the dispensing valve is provided with a fourth driving component 44. The output end of the fourth driving component 44 cooperates with the screw 43. The end of the screw 43 away from the fourth driving component 44 is fixed with a pressure head 41. The pressure head 41 is used to push the glue out from the dispensing nozzle 42. Preferably, a connector is fixed between the screw 43 and the pressure head 41. Multiple parallel pressure heads 41 are provided. In this embodiment, there are 16 pressure heads 41. The screw 43 drives the pressure head 41 through the connector, so that the pressure head 41 descends the same distance at the same time. The dispensing nozzle 42 is set corresponding to the pressure head 41 to realize simultaneous dispensing at multiple points. The fourth driving component 44, the screw 43 and the pressure head 41 together form the screw 43 valve. The dispensing amount is controlled by the fourth driving component 44 driving the screw 43, which improves the stability and accuracy of the dispensing amount, prevents glue from overflowing the cup or insufficient glue, and enhances the controllability and stability of the equipment.

[0039] The positioning system includes an illumination component, which is fixed to the bottom of the dispensing valve and positioned close to the camera to provide stable and sufficient illumination for the camera. This reduces recognition errors caused by insufficient or uneven lighting, improves the clarity and contrast of the image when the camera identifies the reference point, and thus improves the accuracy of the dispensing position and enhances the dispensing quality.

[0040] The positioning system includes an image processing system and a motion control system. The image processing system is electrically connected to the camera and the motion control system. The motion control system is electrically connected to the motion mechanism 20. The camera transmits recognition information to the image processing system. After the recognition information is processed by the image processing system, it is transmitted to the motion control system, realizing automatic calibration and precise motion control, improving the alignment between the dispensing position and the reference point, enhancing dispensing accuracy and production efficiency, and reducing human error and labor intensity.

[0041] The dispensing valve is also equipped with a negative pressure system, which is connected to the chamber inside the dispensing valve. The negative pressure system is located at the end of the dispensing valve away from the dispensing nozzle 42. After dispensing is completed, the negative pressure system is activated to keep the dispensing valve in a negative pressure environment, so as to prevent the glue from trailing or dripping at the end of the dispensing nozzle 42 as much as possible.

[0042] The above are all preferred embodiments of this application. These embodiments are only explanations 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. A dispensing mechanism for LED beads, characterized in that, include: Rack (10); Storage mechanism: The storage mechanism includes a glue storage bottle (31), the bottom of which is provided with a discharge port, the inside of the bottle wall of the glue storage bottle (31) is provided with a heat insulation layer, the heat insulation layer is filled with inert gas, and the inside of the bottle wall of the glue storage bottle (31) is also provided with a temperature control component, the temperature control component is located on the inner side of the heat insulation layer near the cavity of the glue storage bottle (31); Discharge mechanism: The discharge mechanism includes a dispensing valve, the bottom of which is detachably connected to a dispensing nozzle (42), and the dispensing valve is connected to a glue storage bottle (31); Motion mechanism (20): The motion mechanism (20) includes an X-axis motion component, a Y-axis motion component and a Z-axis motion component. The motion mechanism (20) is fixedly connected to the frame (10). The storage mechanism and the discharge mechanism are connected to the output end of the motion mechanism (20). Positioning system: The positioning system includes a camera, which is fixed to the bottom of the dispensing valve and is positioned near the dispensing nozzle (42). The camera is used to identify reference points on the substrate.

2. The dispensing mechanism for LED beads according to claim 1, characterized in that: The temperature control component includes a temperature sensor and a heating coil. The heating coil is evenly wound inside the side wall of the glue storage bottle (31). The temperature sensor is fixed on the inner wall of the glue storage bottle (31) and is located near the discharge port.

3. The dispensing mechanism for LED beads according to claim 2, characterized in that: A first discharge valve (33) is detachably installed on the top of the glue storage bottle (31). The first discharge valve (33) has a first liquid chamber, which is connected to the cavity of the glue storage bottle (31). A first driving component is fixedly installed on the upper end of the first discharge valve (33). A first push rod is fixed on the output end of the first driving component. The first push rod is used to squeeze the liquid in the first liquid chamber into the glue storage bottle (31).

4. The dispensing mechanism for LED beads according to claim 3, characterized in that: A second discharge valve (34) can be detachably installed above the glue storage bottle (31). The second discharge valve (34) has a second liquid chamber, which is connected to the cavity of the glue storage bottle (31). A second driving component is fixedly installed at the upper end of the second discharge valve (34), and a second push rod is fixed at the output end of the second driving component. The second push rod is used to squeeze the liquid in the second liquid chamber into the glue storage bottle (31). The first discharge valve (33) and the second discharge valve (34) are symmetrically arranged about the central axis of the glue storage bottle (31).

5. A dispensing mechanism for LED beads according to claim 4, characterized in that: The upper end of the glue storage bottle (31) is detachably fitted with a connecting cap (32). The first discharge valve (33) and the second discharge valve (34) are detachably connected to the connecting cap (32). The connecting cap (32) is also fixed with a third driving component (35) at the central axis of the glue storage bottle (31). The output end of the third driving component (35) is fixed with a stirring shaft. The stirring shaft extends into the glue storage bottle (31). A large paddle is also fixed near the connecting cap (32) of the stirring shaft.

6. The dispensing mechanism for LED beads according to claim 5, characterized in that: The stirring shaft is located near the bottom of the storage bottle (31) at one end away from the connecting cover (32), and several small paddles are also fixed on the stirring shaft.

7. A dispensing mechanism for LED beads according to claim 6, characterized in that: The upper end of the dispensing valve is provided with a fourth driving member (44). The output end of the fourth driving member (44) is engaged with the screw (43). The end of the screw (43) away from the fourth driving member (44) is fixed with a pressure head (41). The pressure head (41) is used to push the glue out from the dispensing nozzle (42).

8. A dispensing mechanism for LED beads according to claim 7, characterized in that: The positioning system includes an illumination element, which is fixed to the bottom of the dispensing valve and positioned close to the camera.

9. A dispensing mechanism for LED beads according to claim 8, characterized in that: The positioning system includes an image processing system and a motion control system. The image processing system is electrically connected to the camera and the motion control system. The motion control system is electrically connected to the motion mechanism (20). The camera transmits recognition information to the image processing system, and the recognition information is processed by the image processing system and then transmitted to the motion control system.

10. A dispensing mechanism for LED beads according to claim 9, characterized in that: The dispensing valve is also equipped with a negative pressure system, which is located at the end of the dispensing valve away from the dispensing needle (42).

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