Needle head cleaning device of LED (light-emitting diode) dispensing machine

Abstract

The invention relates to the technical field of dispensing machines, and discloses an LED dispensing machine needle head cleaning device which comprises a supporting frame, a pressing assembly arranged at the top end of the supporting frame and a cloth rolling assembly arranged on one side face of the supporting frame. The problem that residual glue at the top end of a needle head and parts with complex shapes cannot be thoroughly removed is effectively solved, a two-way lead screw and a guide rod in a pressing assembly work cooperatively, symmetrical movement of two sliding blocks can be accurately controlled, dust-free cloth is driven by a pressing block to be tightly attached to the surface of the glue dispensing needle head, and therefore efficient cleaning is achieved under the action of mechanical pressure; each part, including the top end and an area difficult to touch, of the surface of the needle head can be covered and cleaned by the dust-free cloth, so that the defect that the suction force of a traditional vacuum suction cleaning mode is insufficient or cannot be covered is overcome, and the cleaning effect and the cleaning efficiency are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing machines, and in particular to a needle cleaning device for an LED glue dispensing machine. Background Art

[0002] LED dispensing machines are widely used in the electronics manufacturing industry, especially in the process of LED packaging and surface mounting (SMT), where they undertake important dispensing tasks. With the continuous improvement of product technology, LED dispensing machines usually adopt a multi-needle valve body design to improve production efficiency and precision. The needle of the dispensing machine is responsible for accurately releasing the glue, and usually needs to work continuously for a long time. However, in the case of long-term production, due to the viscosity of the glue and the particularity of the needle structure, the dispensing needle often accumulates glue during work, especially at the top of the needle. The residual glue will not only affect the quality of dispensing, but also cause other problems in production, such as glue pulling during dispensing, overflowing glue, poor appearance, etc., which will affect the yield and production efficiency of LED products. Currently, one of the commonly used methods for cleaning the dispensing machine needle is vacuum suction cleaning, which creates a negative pressure environment around the dispensing machine needle to suck away the glue residue from the needle surface. The specific operation is to design a suction cleaning device to form a suction area around the dispensing head. When the needle is in this area, the glue is sucked into the collection tank or filtration system. Although the vacuum suction cleaning method can remove the residual glue on the surface of the dispensing needle to a certain extent, vacuum suction cleaning mainly relies on airflow and negative pressure to absorb glue. For the top of the needle or parts with complex shapes that are difficult to directly reach, it is often impossible to effectively remove the glue residue. Especially when the glue solidifies to form fine particles, insufficient suction or leakage of suction may not achieve the purpose of thorough cleaning.

[0003] Therefore, it is necessary to provide a LED dispensing machine needle cleaning device to solve the above-mentioned problem of being unable to effectively remove glue residues. Summary of the invention

[0004] The main purpose of the present invention is to provide a LED dispensing machine needle cleaning device, aiming to solve the technical problems mentioned in the above background technology.

[0005] The present invention adopts the following technical solutions: A LED dispensing machine needle cleaning device comprises a support frame and a pressing assembly arranged at the top of the support frame, and a cloth rolling assembly arranged at a side of the support frame; The pressing assembly comprises two symmetrically arranged fixing frames, a bidirectional screw is rotatably connected between the two fixing frames, and a guide rod is fixedly connected between the two fixing frames, the bidirectional screw is threadedly connected to two symmetrically arranged sliders, the sliders are slidably connected to the guide rods, and a pressing block is fixedly connected to one end surface of the two sliders facing the cloth rolling assembly; The cloth rolling assembly is provided with a dust-free cloth, which is respectively wound around the outside of the two pressing blocks. When the bidirectional screw is rotated to drive the two sliders to approach each other, the pressing block drives the dust-free cloth to press together to clean the needle.

[0006] Furthermore, the pressing assembly is also provided with a first bevel gear, which is fixedly connected to one end of the bidirectional screw rod, and the first bevel gear is meshed with a second bevel gear, which is fixedly arranged on the driving end of the first drive motor, and the first drive motor is fixedly connected to the fixed frame, and the first drive motor is arranged on the side of the second bevel gear facing the bidirectional screw rod.

[0007] Furthermore, the cloth rolling assembly is also provided with a material receiving reel, a material storing reel and an intermediate reel, and the material receiving reel, the material storing reel and the intermediate reel are respectively rotatably connected to one side surface of the support frame; The dust-free cloth is stored in the material storage reel. After being drawn out from the material storage reel, the dust-free cloth is sequentially wound around the pressing block, the middle reel and another pressing block, and then wound and recovered to the material receiving reel.

[0008] Furthermore, the material storage drum is provided with a tensioning shaft, the material storage drum is rotatably connected to the tensioning shaft, one end of the tensioning shaft penetrates the support frame, the support frame is provided with a waist-shaped hole corresponding to the tensioning shaft, the waist-shaped hole is used for the tensioning shaft to slide, and the end of the tensioning shaft away from the material storage drum is threadedly connected with a fastener to fix the tensioning shaft after the tensioning shaft is adjusted into place.

[0009] Furthermore, the material receiving reel is provided with a driving shaft, the material receiving reel is fixedly connected to the driving shaft, the support frame is provided at one end of the driving shaft away from the material receiving reel, and a bearing is sleeved on the outer side of the driving shaft, the outer side of the bearing is fixedly connected to the support frame, the end of the driving shaft away from the bearing is connected to a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly arranged on the driving end of the second driving motor, and the second driving motor is fixedly connected to the support frame.

[0010] Furthermore, a cleaning box for storing cleaning liquid is provided below the pressing block, and the cleaning box is provided above the intermediate roll, a fixed frame is provided outside the cleaning box, the fixed frame is fixedly connected to the support frame, and sliding fillets are provided on opposite sides of the fixed frame so that the dust-free cloth can be slidably connected to the fixed frame when the two sliders approach each other.

[0011] Furthermore, an ultrasonic transducer is provided on the inner side of the bottom of the cleaning box, the ultrasonic transducer is electrically connected to an ultrasonic generator, and the ultrasonic generator is fixedly provided on the upper end surface of the fixing frame; A heating plate is arranged on one side of the cleaning box, and the heating plate is electrically connected to a temperature control module, and the temperature control module is fixedly arranged on the upper end surface of the fixing frame.

[0012] Further, a mounting platform is fixedly provided on the upper end surface of the support frame, a glue loading groove is provided on the upper end surface of the mounting platform, the glue loading groove is provided on one side of the pressing block, a pilot groove is provided on the upper end surface of the glue loading groove, and a needle pilot rod is provided in the pilot groove; A mounting frame is arranged on a side of the pressing block away from the glue loading groove, a blower is arranged on a side of the mounting frame facing the pressing block, a heating wire array is arranged in an air outlet duct of the blower, and an outlet of the air outlet duct faces the pressing block.

[0013] Furthermore, a liquid replacement system is connected to a side of the cleaning box close to the support frame, and the liquid replacement system includes a solenoid valve, and the solenoid valve is connected to the cleaning box through a pipeline; The liquid replacement system further comprises a new liquid tank and a waste liquid tank, the new liquid tank and the waste liquid tank are commonly connected with a micro pump, and the micro pump is connected to an end of the solenoid valve away from the cleaning box through a pipeline.

[0014] Furthermore, a detection frame is fixedly provided on the upper end surface of the slider, and a visual detector is fixedly connected to one side of the detection frame. The working end of the visual detector faces the pressing block, and the visual detector is used to detect the degree of contamination of the dust-free cloth wrapped around the outside of the pressing block.

[0015] Beneficial effects: In the present invention, by arranging a combination of a pressing component and a cloth rolling component, the problem that the residual glue at the top of the needle and the parts with complex shapes cannot be completely removed is effectively solved. The bidirectional screw and the guide rod in the pressing component work together to accurately control the symmetrical movement of the two sliders, so that the dust-free cloth is tightly attached to the surface of the dispensing needle under the drive of the pressing block, thereby achieving efficient cleaning under the action of mechanical pressure, and ensuring that every part of the needle surface, including the top and difficult-to-reach areas, can be covered and cleaned by the dust-free cloth, thereby avoiding the defects of insufficient suction or inability to cover in traditional vacuum cleaning methods, and greatly improving the cleaning effect and cleaning efficiency; at the same time, the cloth rolling component can realize the dynamic replacement function of the dust-free cloth, avoiding the problem of frequent manual replacement of the dust-free cloth during wiping. When a part of the dust-free cloth is used, it can be automatically switched to a new dust-free cloth surface through the cloth rolling component to maintain the continuity of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic diagram of the overall structure of another direction of an embodiment of the present invention; Figure 3 is a schematic structural diagram of a pressing assembly according to an embodiment of the present invention; Figure 4 It is a schematic structural diagram of a cloth rolling assembly according to an embodiment of the present invention.

[0017] Among them: 1. Support frame; 2. Pressing assembly; 21. Fixed frame; 22. Bidirectional screw rod; 23. Guide rod; 24. Slider; 25. Pressing block; 26. First bevel gear; 27. Second bevel gear; 28. First drive motor; 3. Cloth rolling assembly; 301. Dust-free cloth; 302. Rewinding reel; 303. Storage reel; 304. Intermediate reel; 305. Tensioning shaft; 306. Fastener; 307. Drive shaft; 308. First bevel gear; 309. Second bevel gear; 310. Second drive motor; 4. Cleaning box; 5. Fixed frame; 6. Mounting platform; 7. Glue loading slot; 8. Needle test rod; 9. Mounting frame; 10. Blower; 11. Solenoid valve; 12. New liquid tank; 13. Waste liquid tank; 14. Micro pump; 15. Detection frame; 16. Visual detector.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] Reference Figures 1 to 3 The present invention proposes a needle cleaning device for an LED dispensing machine, comprising a pressing component 21, a pressing component arranged at the top of the pressing component 21, and a cloth rolling component 3 arranged at one side of the pressing component 21; The pressing assembly includes two symmetrically arranged fixing frames 21, a bidirectional screw rod 22 is rotatably connected between the two fixing frames 21, and a guide rod 23 is fixedly connected between the two fixing frames 21, the bidirectional screw rod 22 is threadedly connected to two symmetrically arranged sliders 24, the sliders 24 are slidably connected to the guide rods 23, and a pressing block 25 is fixedly connected to one end surface of the two sliders 24 facing the cloth rolling assembly 3; The cloth rolling assembly 3 is provided with a dust-free cloth 301, and the dust-free cloth 301 is respectively wound around the outside of the two pressing blocks 25. When the bidirectional screw rod 22 is rotated to drive the two sliders 24 to approach each other, the pressing block 25 drives the dust-free cloth 301 to press together to clean the needle.

[0024] In the above embodiment, the pressing assembly 21 serves as the basic supporting structure of the entire device, and is used to fix the pressing assembly and the cloth rolling assembly 3. The top of the pressing assembly 21 is provided with a mounting surface for mounting the pressing assembly to ensure that the pressing assembly can operate stably; the cloth rolling assembly 3 is installed on one side of the pressing assembly 21 to support the winding mechanism of the dust-free cloth 301.

[0025] The pressing assembly is the core cleaning mechanism of the device, including two symmetrically arranged fixed frames 21, a bidirectional screw 22, a guide rod 23 and a slider 24. The two fixed frames 21 are respectively arranged on both sides of the top of the pressing assembly 21, and are used to fix the bidirectional screw 22 and the guide rod 23. The bidirectional screw 22 is arranged horizontally and is rotatably connected between the two fixed frames 21, serving as a driving element for the movement of the slider 24. Through the bidirectional thread design, the two sliders 24 can move toward or away from each other at the same speed. The guide rod 23 is fixedly installed between the two fixed frames 21 and is arranged parallel to the bidirectional screw 22, and is used to constrain the sliding direction of the slider 24 to prevent the slider 24 from deviating. The slider 24 is threadedly connected to the bidirectional screw 22 and is slidably connected through the guide rod 23 to ensure that the slider 24 can move smoothly under the drive of the bidirectional screw 22. A pressing block 25 is fixedly connected to one end of each slider 24 facing the cloth rolling assembly 3, which is used to press the dust-free cloth 301. The pressing block 25 is a long strip structure, fixedly connected to the slider 24, and has a smooth surface, and can drive the dust-free cloth 301 to perform all-round coverage cleaning on the needle when the slider 24 moves.

[0026] The cloth rolling component 3 is arranged on one side of the pressing component 21, and provides a cleaning medium - dust-free cloth 301 - for the pressing component. When the needle of the glue dispensing machine needs to be cleaned, the system drives the bidirectional screw 22 to rotate, and the slider 24 moves toward the needle under the action of the bidirectional screw 22 and the guide rod 23, driving the pressing block 25 and the dust-free cloth 301 to perform a covering pressing on the needle. At this time, the glue on the surface of the needle is wiped off under the pressure of the pressing block 25 and the friction of the dust-free cloth 301. After cleaning, the slider 24 returns to its original position, the cloth rolling drive mechanism starts, and the new dust-free cloth 301 is automatically replaced to prepare for the next cleaning.

[0027] To sum up, by setting up the combination of the pressing component and the cloth rolling component 3, the problem that the residual glue at the top of the needle and the parts with complex shapes cannot be completely removed is effectively solved. The bidirectional screw 22 and the guide rod 23 in the pressing component work together to accurately control the symmetrical movement of the two sliders 24, so that the dust-free cloth 301 is tightly attached to the surface of the dispensing needle under the drive of the pressing block 25, thereby achieving efficient cleaning under the action of mechanical pressure, and ensuring that every part of the needle surface, including the top and difficult-to-reach areas, can be covered and cleaned by the dust-free cloth 301, thereby avoiding the defects of insufficient suction or inability to cover in traditional vacuum cleaning methods, and greatly improving the cleaning effect and cleaning efficiency; at the same time, the cloth rolling component 3 can realize the dynamic replacement function of the dust-free cloth 301, avoiding the problem of frequent manual replacement of the dust-free cloth 301 during wiping. When a part of the dust-free cloth 301 is used, it can be automatically switched to the new dust-free cloth 301 surface through the cloth rolling component 3 to maintain the continuity of the cleaning effect.

[0028] refer to Figure 3 In one embodiment, the pressing assembly is further provided with a first bevel gear 26, which is fixedly connected to one end of the bidirectional screw rod 22, and the first bevel gear 26 is meshed with a second bevel gear 27, which is fixedly arranged at the driving end of the first drive motor 28, and the first drive motor 28 is fixedly connected to the fixing frame 21, and the first drive motor 28 is arranged on the side of the second bevel gear 27 facing the bidirectional screw rod 22.

[0029] In the above embodiment, the first drive motor 28 is connected to the power supply through the control circuit. When the power is turned on, the first drive motor 28 rotates, and the first bevel gear 26 is driven to rotate through the second bevel gear 27, thereby rotating the bidirectional screw 22. The first drive motor 28 can be a servo motor or a brushless motor. The rotation of the bidirectional screw 22 enables the two sliders 24 to move synchronously along the guide rod 23 to achieve a symmetrical pressing action. Not only does it ensure that the dust-free cloth 301 is evenly attached to the needle surface, but also through precise mechanical control, the accuracy and efficiency of cleaning are improved. In addition, this structural design of the pressing assembly also has good stability and durability, and can meet the needs of long-term continuous work.

[0030] refer to Figure 1 and Figure 4 In one example, the cloth rolling assembly 3 is further provided with a receiving reel 302, a storing reel 303 and an intermediate reel 304, and the receiving reel 302, the storing reel 303 and the intermediate reel 304 are respectively rotatably connected to one side of the pressing assembly 21; The stock reel 303 stores the dust-free cloth 301 . After being drawn out from the stock reel 303 , the dust-free cloth 301 is sequentially wound around the pressing block 25 , the middle reel 304 and another pressing block 25 , and then wound and recovered to the receiving reel 302 .

[0031] In the above embodiment, the intermediate reel 304 is arranged below the two pressing blocks 25 to adjust the spacing between the non-cleaning surfaces of the dust-free cloth 301, ensuring that the dust-free cloth 301 maintains appropriate tension during the pressing process. When the dust-free cloth 301 is drawn out from the material storage reel 303 and wound around the pressing block 25, the dust-free cloth 301 can form a uniform tension between the two pressing blocks 25 through the adjustment of the intermediate reel 304, thereby achieving uniform cleaning of the needle surface during the pressing action. After the cleaning is completed, the dust-free cloth 301 is recycled to the material receiving reel 302, and the entire process is precisely controlled by the control system to ensure the cleaning effect and the efficiency of the use of the dust-free cloth 301. In addition, the design of the cloth rolling assembly 3 also takes into account the convenience of replacing the dust-free cloth 301, so that the operator can quickly replace the new dust-free cloth 301 to maintain the continuity and efficiency of the cleaning work.

[0032] In one embodiment, the material storage reel 303 is penetrated by a tensioning shaft 305, and the material storage reel 303 is rotatably connected to the tensioning shaft 305, one end of the tensioning shaft 305 penetrates the pressing assembly 21, and the pressing assembly 21 is provided with a waist-shaped hole corresponding to the tensioning shaft 305, and the waist-shaped hole is used for the tensioning shaft 305 to slide, and one end of the tensioning shaft 305 away from the material storage reel 303 is threadedly connected with a fastener 306 to fix the tensioning shaft 305 after the tensioning shaft 305 is adjusted into place.

[0033] In the above embodiment, the fastener 306 includes a nut and a washer. The nut is connected to the tensioning shaft 305 through a thread, and the washer is located between the nut and the pressing assembly 21 to prevent the nut from directly contacting the pressing assembly 21 and causing wear. By rotating the nut, the position of the tensioning shaft 305 can be adjusted, thereby changing the tension of the stock reel 303. When the dust-free cloth 301 becomes loose during use, the operator can easily increase the tension by rotating the nut to ensure that the dust-free cloth 301 maintains appropriate tension when cleaning the needle. In addition, the structural design is simple, easy to maintain and replace, and improves the stability and reliability of the cleaning device.

[0034] In one embodiment, the receiving reel 302 is provided with a drive shaft 307, and the receiving reel 302 is fixedly connected to the drive shaft 307. The end of the drive shaft 307 away from the receiving reel 302 is provided with the pressing assembly 21, and a bearing is sleeved on the outer side of the drive shaft 307, and the outer side of the bearing is fixedly connected to the pressing assembly 21. The end of the drive shaft 307 away from the bearing is connected to a first bevel gear 308, and the first bevel gear 308 is meshed with a second bevel gear 309. The second bevel gear 309 is fixedly arranged at the driving end of the second drive motor 310, and the second drive motor 310 is fixedly connected to the pressing assembly 21.

[0035] In the above embodiment, the second drive motor 310 drives the first bevel gear 308 to rotate through the second bevel gear 309, thereby driving the drive shaft 307 to rotate. The second drive motor 310 can be a DC motor or a stepper motor, and the appropriate motor type can be selected according to actual needs to meet different speed and torque requirements. The rotation of the drive shaft 307 causes the material receiving reel 302 to rotate synchronously, thereby realizing the winding of the dust-free cloth 301. In this way, it can be ensured that the dust-free cloth 301 maintains appropriate tension during the winding process to avoid uneven winding or looseness due to insufficient tension. In addition, the structural design is also simple, easy to maintain and replace, and further improves the stability and reliability of the LED dispensing machine needle cleaning device.

[0036] refer to Figure 1In one embodiment, a cleaning box 4 for storing cleaning liquid is provided below the pressing block 25, and the cleaning box 4 is provided above the intermediate reel 304. A fixing frame 5 is provided on the outer side of the cleaning box 4, and the fixing frame 5 is fixedly connected to the pressing assembly 21. Sliding fillets are provided on opposite sides of the fixing frame 5 so that the dust-free cloth 301 is slidably connected to the fixing frame 5 when the two sliders 24 approach each other.

[0037] In the above embodiment, the dust-free cloth 301 is slidably connected to the fixed frame 5 through a sliding fillet, so that the dust-free cloth 301 can slide smoothly over the cleaning box 4 during the winding process, thereby achieving continuous sliding of the dust-free cloth 301 and avoiding scratches on the dust-free cloth 301. The cleaning box 4 contains an appropriate amount of cleaning liquid. After the needle is wiped for the first time from the pressing block 25, it continues to move downward into the cleaning liquid, and returns to the dust-free cloth 301 and is wiped again. The dust-free cloth 301 can fully absorb the cleaning liquid and clean the needle again, achieving a high-quality cleaning effect.

[0038] In one embodiment, an ultrasonic transducer is disposed on the inner side of the bottom of the cleaning box 4, the ultrasonic transducer is electrically connected to an ultrasonic generator, and the ultrasonic generator is fixedly disposed on the upper end surface of the fixing frame 5; A heating plate is disposed on one side of the cleaning box 4 . The heating plate is electrically connected to a temperature control module. The temperature control module is fixedly disposed on the upper end surface of the fixing frame 5 .

[0039] In the above embodiment, the ultrasonic transducer generates high-frequency vibrations when working, transfers energy through the cleaning liquid, forms tiny bubbles, and these bubbles burst rapidly under pressure, generating a strong impact force, thereby achieving the purpose of cleaning the needle when the needle moves to the cleaning liquid. At the same time, the heating plate can heat the cleaning liquid and keep the cleaning liquid within a certain temperature range to improve the cleaning efficiency and effect. The temperature control module is responsible for monitoring and adjusting the temperature of the cleaning liquid to ensure that it works at the optimal cleaning temperature to avoid affecting the cleaning effect due to excessively high or low temperatures.

[0040] In one embodiment, a mounting platform 6 is fixedly provided on the upper end surface of the pressing assembly 21, and a glue loading groove 7 is provided on the upper end surface of the mounting platform 6. The glue loading groove 7 is provided on one side of the pressing block 25, and a pilot groove is provided on the upper end surface of the glue loading groove 7. A needle pilot rod 8 is provided in the pilot groove. A mounting frame 9 is provided on the side of the pressing block 25 away from the glue loading groove 7, and a blower 10 is provided on the side of the mounting frame 9 facing the pressing block 25. A heating wire array is provided in the air outlet duct of the blower 10, and the outlet of the air outlet duct faces the pressing block 25.

[0041] In the above embodiment, when the needle of the LED glue dispensing machine needs to be cleaned, the needle is first moved to the pilot groove above the glue loading groove 7, and preliminary positioning and testing are performed through the needle test rod 8. After the cleaning process of the needle is completed, the blower 10 is started to blow the air heated by the heating wire array to the pressing block 25 through the air outlet duct, thereby drying the needle. The heating wire array ensures the temperature of the dry air to achieve the effect of quickly and evenly drying the needle, avoiding needle blockage or contamination caused by residual moisture, and can quickly resume glue dispensing work.

[0042] refer to Figure 2 In one embodiment, a liquid replacement system is connected to a side of the cleaning box 4 close to the pressing assembly 21, and the liquid replacement system includes a solenoid valve 11, and the solenoid valve 11 is connected to the cleaning box 4 through a pipeline; The liquid replacement system further includes a new liquid tank 12 and a waste liquid tank 13 , and the new liquid tank 12 and the waste liquid tank 13 are commonly connected to a micro pump 14 , and the micro pump 14 is connected to an end of the solenoid valve 11 away from the cleaning box 4 through a pipeline.

[0043] In the above embodiment, during the cleaning process, when the cleaning liquid needs to be replaced, the micro pump 14 is started, and the cleaning liquid in the new liquid tank 12 is transported to the solenoid valve 11 through the pipeline. The solenoid valve 11 controls the new liquid to flow into the cleaning box 4 to replace the old cleaning liquid. After the cleaning is completed, the solenoid valve 11 is switched, and the waste liquid tank 13 receives the waste liquid in the cleaning box 4 through the pipeline, and the micro pump 14 pumps it into the waste liquid tank 13 for storage. Through such a liquid replacement system, the freshness of the cleaning liquid can be ensured, the cleaning efficiency can be improved, and the direct discharge of the waste liquid can be avoided, thereby protecting the environment.

[0044] In one embodiment, a detection frame 15 is fixedly provided on the upper end surface of the slider 24, and a visual detector 16 is fixedly connected to one side of the detection frame 15. The working end of the visual detector 16 faces the pressing block 25, and the visual detector 16 is used to detect the degree of contamination of the dust-free cloth 301 wrapped around the outside of the pressing block 25.

[0045] In the above embodiment, the visual detector 16 captures the image of the dust-free cloth 301 through a high-resolution camera, and analyzes the contamination of the cloth surface through image processing technology. When it is detected that the degree of contamination of the dust-free cloth 301 exceeds the preset threshold, the system will automatically send a rotation signal of the dust-free cloth 301, control the operation of the second drive motor 310, and replace the dust-free cloth 301. In addition, the design of the detection frame 15 allows the visual detector 16 to move axially along the pressing block 25 driven by the slider 24, ensuring a comprehensive detection of the entire surface of the dust-free cloth 301. Through this automatic detection mechanism, the cleanliness of the needle of the dispensing machine can be effectively guaranteed, thereby improving the accuracy and efficiency of dispensing.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A LED dispensing machine needle cleaning device, characterized in that: It comprises a support frame (1), a pressing assembly (2) arranged at the top of the support frame (1), and a cloth rolling assembly (3) arranged at a side of the support frame (1); The pressing assembly (2) comprises two symmetrically arranged fixing frames (21), a bidirectional screw rod (22) being rotatably connected between the two fixing frames (21), and a guide rod (23) being fixedly connected between the two fixing frames (21), the bidirectional screw rod (22) being threadedly connected to two symmetrically arranged sliding blocks (24), the sliding blocks (24) being slidably connected to the guide rod (23), and a pressing block (25) being fixedly connected to one end surface of the two sliding blocks (24) facing the cloth rolling assembly (3); The cloth rolling assembly (3) is provided with a dust-free cloth (301), and the dust-free cloth (301) is respectively wound around the outside of the two pressing blocks (25). When the bidirectional screw rod (22) is rotated to drive the two sliders (24) to approach each other, the pressing block (25) drives the dust-free cloth (301) to be pressed together to clean the needle.

2. The LED dispensing machine needle cleaning device according to claim 1, characterized in that: The pressing assembly (2) is further provided with a first bevel gear (26), the first bevel gear (26) being fixedly connected to one end of the bidirectional screw rod (22), the first bevel gear (26) being meshed with a second bevel gear (27), the second bevel gear (27) being fixedly arranged at the driving end of a first drive motor (28), the first drive motor (28) being fixedly connected to the fixing frame (21), and the first drive motor (28) being arranged on a side of the second bevel gear (27) facing the bidirectional screw rod (22).

3. The LED dispensing machine needle cleaning device according to claim 1, characterized in that: The cloth rolling assembly (3) is further provided with a material receiving reel (302), a material storing reel (303) and an intermediate reel (304), wherein the material receiving reel (302), the material storing reel (303) and the intermediate reel (304) are respectively rotatably connected to a side surface of the support frame (1); The material storage reel (303) stores the dust-free cloth (301), and after being drawn out from the material storage reel (303), the dust-free cloth (301) is sequentially wound around the pressing block (25), the middle reel (304) and another pressing block (25), and then wound back onto the material receiving reel (302).

4. The LED dispensing machine needle cleaning device according to claim 3, characterized in that: The material storage reel (303) is provided with a tensioning shaft (305), and the material storage reel (303) is rotatably connected to the tensioning shaft (305). One end of the tensioning shaft (305) penetrates the support frame (1), and the support frame (1) is provided with a waist-shaped hole corresponding to the tensioning shaft (305), and the waist-shaped hole is used for the tensioning shaft (305) to slide. One end of the tensioning shaft (305) away from the material storage reel (303) is threadedly connected with a fastener (306) so that the tensioning shaft (305) can be fixed after the tensioning shaft (305) is adjusted into place.

5. The LED dispensing machine needle cleaning device according to claim 3, characterized in that: The material receiving reel (302) is provided with a drive shaft (307), the material receiving reel (302) is fixedly connected to the drive shaft (307), the end of the drive shaft (307) away from the material receiving reel (302) is provided with the support frame (1), and a bearing is sleeved on the outer side of the drive shaft (307), the outer side of the bearing is fixedly connected to the support frame (1), the end of the drive shaft (307) away from the bearing is connected to a first bevel gear (308), the first bevel gear (308) is meshed with a second bevel gear (309), the second bevel gear (309) is fixedly arranged on the driving end of a second drive motor (310), and the second drive motor (310) is fixedly connected to the support frame (1).

6. The LED dispensing machine needle cleaning device according to claim 3, characterized in that: A cleaning box (4) for storing cleaning liquid is arranged below the pressing block (25), and the cleaning box (4) is arranged above the intermediate reel (304). A fixing frame (5) is arranged outside the cleaning box (4), and the fixing frame (5) is fixedly connected to the support frame (1). Sliding fillets are arranged on opposite sides of the fixing frame (5) so that the dust-free cloth (301) can be slidably connected to the fixing frame (5) when the two sliding blocks (24) are close to each other.

7. The LED dispensing machine needle cleaning device according to claim 6, characterized in that: An ultrasonic transducer is arranged on the inner side of the bottom of the cleaning box (4), the ultrasonic transducer is electrically connected to an ultrasonic generator, and the ultrasonic generator is fixedly arranged on the upper end surface of the fixing frame (5); A heating plate is provided on one side of the cleaning box (4), the heating plate is electrically connected to a temperature control module, and the temperature control module is fixedly arranged on the upper end surface of the fixing frame (5).

8. The LED dispensing machine needle cleaning device according to claim 1, characterized in that: The upper end surface of the support frame (1) is fixedly provided with a mounting platform (6), the upper end surface of the mounting platform (6) is provided with a glue loading groove (7), the glue loading groove (7) is arranged on one side of the pressing block (25), the upper end surface of the glue loading groove (7) is provided with a pilot groove, and a needle pilot rod (8) is arranged in the pilot groove; A mounting frame (9) is arranged on a side of the pressing block (25) away from the glue loading groove (7), and a blower (10) is arranged on a side of the mounting frame (9) facing the pressing block (25). A heating wire array is arranged in an air outlet duct of the blower (10), and an outlet of the air outlet duct faces the pressing block (25).

9. The LED dispensing machine needle cleaning device according to claim 6, characterized in that: A liquid replacement system is connected to a side of the cleaning box (4) close to the support frame (1), wherein the liquid replacement system comprises a solenoid valve (11), and the solenoid valve (11) is connected to the cleaning box (4) via a pipeline; The liquid replacement system further comprises a new liquid tank (12) and a waste liquid tank (13), wherein the new liquid tank (12) and the waste liquid tank (13) are connected together with a micro pump (14), and the micro pump (14) is connected to an end of the solenoid valve (11) away from the cleaning box (4) through a pipeline.

10. The LED dispensing machine needle cleaning device according to claim 1, characterized in that: A detection frame (15) is fixedly provided on the upper end surface of the sliding block (24); a visual detector (16) is fixedly connected to one side of the detection frame (15); a working end of the visual detector (16) faces the pressing block (25); and the visual detector (16) is used to detect the degree of contamination of the dust-free cloth (301) wrapped around the outside of the pressing block (25).

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