Glue removing device and method for glue dispensing needle head

Abstract

The invention discloses a glue removing device and method for a glue dispensing needle head, and belongs to the technical field of cleaning of the glue dispensing needle head. A dispensing needle glue cleaning device comprises a base, a wiping part and a scraping part and further comprises a T-shaped plate, a first sliding groove is formed in the T-shaped plate, a first sliding block is arranged in the first sliding groove in a sliding mode, a hollow rod is installed on the first sliding block, and the hollow rod makes contact with an abutting plate; the execution element is fixedly installed on the T-shaped plate, a cam is installed at the output end of the execution element, the execution element drives the cam, so that the first sliding block does reciprocating motion along the first sliding groove, the hollow rod is pushed to move back and forth, the abutting plate is pushed to enable the scraping part to rotate integrally, and the scraping part drives the rotating roller to rotate when rotating so as to indirectly affect operation of the circulating belt; according to the glue dispensing needle cleaning device, a synergistic cleaning mechanism is formed, the wiping part cleans the glue dispensing needle, the manual hand action is simulated, meanwhile, vibration generated by back-and-forth movement of the hollow rod enables glue attached to the abutting plate to fall off, the whole cleaning process is highly automatic, and the overall working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning of dispensing needles, and particularly relates to a device and method for cleaning dispensing needles. Background Art

[0002] In fields such as electronic manufacturing, semiconductor packaging, and medical device assembly, the dispensing process is one of the key processes. By precisely controlling the flow rate and position of the colloid, the dispensing process can achieve functions such as component fixation, sealing, and protection. However, during long-term use, the dispensing needle is prone to accumulating residual colloid, which not only affects the dispensing accuracy but may also cause problems such as blockage or dripping, thereby reducing production efficiency and product quality.

[0003] Traditional cleaning methods usually rely on manual operations or simple mechanical devices, such as using cotton swabs dipped in solvents for wiping, or using simple flushing devices for preliminary cleaning. In recent years, some dispensing needle cleaning devices with higher automation levels have emerged on the market.

[0004] However, many existing devices only use one of physical scraping or liquid flushing for cleaning, making it difficult to handle complex and diverse colloid residue situations and affecting the overall efficiency of the production line. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that many existing devices in the prior art only use one of physical scraping or liquid flushing for cleaning, making it difficult to handle complex and diverse colloid residue situations and affecting the overall efficiency of the production line, and to propose a device and method for cleaning dispensing needles.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for cleaning a dispensing needle includes: a base, provided with a cleaning tank filled with a cleaning liquid; a wiping part installed in the cleaning tank; the wiping part includes two rollers rotatably installed on the inner wall of the cleaning tank, and a circulating belt is tensioned between the two rollers; a scraping part installed in the cleaning tank and located at the conveying end of the circulating belt; the scraping part includes a rotating rod rotatably installed on the inner wall of the cleaning tank, a belt is connected between the rotating rod and the adjacent roller, a mesh sleeve is fixedly installed on the rotating rod, and abutting plates in contact with the circulating belt are equidistantly installed on the outer circumferential surface of the mesh sleeve; a T-shaped plate fixedly installed on the inner bottom surface of the cleaning tank, provided with a first chute, the extending direction of the first chute is perpendicular to the extending direction of the cleaning tank, a first slider is slidably installed in the first chute, a hollow rod is fixedly installed on the first slider, and the hollow rod is in contact with the abutting plate; an actuating element fixedly installed on the T-shaped plate, and a cam is installed at its output end for driving the reciprocating movement of the first slider.

[0008] To simulate the manual wiping action, preferably, the wiping part further includes a wiping rod. Installation grooves are equidistantly formed on both sides of the endless belt, and a U-shaped seat is fixedly installed in the installation groove. The wiping rod is rotatably installed in the U-shaped seat. A wiping cotton and a restraint plate are fixedly installed on the wiping rod. The restraint plate is installed on the rollers on both sides of the endless belt, and its bottom is fixedly connected to the inner bottom surface of the glue cleaning tank.

[0009] To facilitate the reset of the wiping rod for flushing, further, an installation hole is formed in the U-shaped seat. The wiping rod is provided with an installation pin adapted to the installation hole. A torsion spring is movably installed on the installation pin, and both ends of the torsion spring are respectively abutted against the hole wall of the installation hole and the wiping rod.

[0010] To be able to closely contact the endless belt to achieve a scraping effect and to be able to adaptively contract during rotation, preferably, the abutting plate includes a first plate body fixed to the mesh sleeve. A second sliding groove is formed in the first plate body, and a second plate body is slidably installed in the second sliding groove. The contact surface of the second plate body with the endless belt is an inclined surface. Wherein, a spring is fixedly connected between the second plate body and the inner side surface of the second sliding groove.

[0011] To provide an additional cleaning effect on the wiping cotton, preferably, a slide rail is fixedly installed on the T-shaped plate. Symmetrically arranged second sliders are slidably installed on the slide rail. A vertical rod is fixedly installed on the second slider. A brush is fixedly installed at one end of the vertical rod close to the endless belt. Wherein, an L-shaped connecting block is rotatably installed on the T-shaped plate, and both ends of the L-shaped connecting block are respectively rotatably connected to the first slider and the second slider.

[0012] To ensure the stable movement of the hollow rod driven by the actuating element and improve the reliability and accuracy of the entire cleaning process, further, a limiting rod is fixedly installed on the T-shaped plate, and the hollow rod is sleeved on the limiting rod.

[0013] To form a closed-loop cleaning and recycling system, further, a collection box is installed in the glue cleaning tank. A return pipe is fixedly installed on the collection box. A Y-shaped hose is fixedly connected between the return pipe and the vertical rod. A water pump is installed on the Y-shaped hose, and a filter grille is installed at one end of the return pipe away from the Y-shaped hose.

[0014] To flush the wiping cotton, preferably, a bracket is fixedly installed in the glue cleaning tank. A nozzle is fixedly installed on the bracket. The input end of the nozzle is fixedly connected to a water inlet pipe and a pump body is installed. The output end of the nozzle faces the end of the stroke of the endless belt.

[0015] In order to scrape off excess cleaning liquid on the wiping cotton, keep it dry and increase its contact with the needle, further, a scraper is fixedly installed in the glue cleaning tank, the scraper is located at the initial end of the travel of the circulating belt and abuts against the wiping cotton.

[0016] A method for removing glue from a dispensing needle comprises the following steps:

[0017] Step 1: Move the dispensing needle that needs to be cleaned to the designated cleaning position;

[0018] Step 2: Perform preliminary physical cleaning of the dispensing needle by wiping to remove most of the dry glue or impurities on the surface;

[0019] Step 3: Check whether the dispensing needle has been completely cleaned, confirm that there is no residual colloid or other impurities, and prepare for the next round of dispensing operation;

[0020] Step 4: Clean the wiped device and prepare for the next round of glue cleaning operation.

[0021] Compared with the prior art, the present invention provides a dispensing needle glue cleaning device and method, which has the following beneficial effects:

[0022] 1. The dispensing needle glue cleaning device, the dispensing needle enters the glue cleaning groove and is located above the circulating belt and remains motionless. The actuator drives the cam to make the first slider reciprocate along the first slide groove, push the hollow rod to move back and forth, and push the abutment plate to make the scraping part rotate as a whole. When the scraping part rotates, it drives the roller to rotate, thereby indirectly affecting the operation of the circulating belt, forming a coordinated cleaning mechanism, so that the wiping part cleans the dispensing needle, simulating the manual hand movement. At the same time, the vibration generated by the back and forth movement of the hollow rod causes the colloid attached to the abutment plate to fall off. The entire cleaning process is highly automated, which improves the overall work efficiency;

[0023] 2. The dispensing needle glue cleaning device, when the actuator drives the cam to make the first slider reciprocate along the first slide groove, the L-shaped connecting block moves accordingly, driving the second slider to reciprocate synchronously along the slide rail, and the vertical rod and brush on the second slider move accordingly. The brush contacts the circulating belt and the wiping cotton to provide additional cleaning effect, especially for residues that are difficult to remove. The hollow rod is sleeved on the limit rod to ensure its stable movement under the drive of the actuator, thereby improving the reliability and accuracy of the entire cleaning process;

[0024] 3. The glue cleaning device for the dispensing needle head falls into the collection box below as the scraping part rotates. The filter grille at the end of the reflux pipe can effectively block large particle impurities, ensuring that only the preliminarily filtered cleaning liquid can enter the Y-shaped hose. The water pump installed on the Y-shaped hose pumps the filtered cleaning liquid to the brush on the vertical rod. The brush uses this recycled cleaning liquid to perform additional cleaning on the circulating belt, improving the cleaning efficiency and reducing water resource waste. After use, the cleaning liquid will return to the glue cleaning tank again or directly flow into the collection box, forming a closed-loop cleaning and recycling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram of the overall structure of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0026] Figure 2 FIG. is a schematic diagram of the internal structure of the glue cleaning tank of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0027] Figure 3 FIG. is a schematic diagram of the structure of the circulating belt of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0028] Figure 4 FIG. is a schematic diagram of the structure of the wiping rod of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0029] Figure 5 FIG. is a schematic diagram of the structure of the restraint plate of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0030] Figure 6 FIG. is a schematic diagram of the structure of the scraping part of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0031] Figure 7 FIG. is a schematic diagram of the structure of the T-shaped plate of a glue cleaning device for a dispensing needle head proposed by the present invention Figure 1 ;

[0032] Figure 8 FIG. is a schematic diagram of the structure of the T-shaped plate of a glue cleaning device for a dispensing needle head proposed by the present invention Figure 2 ;

[0033] Figure 9 FIG. is a schematic diagram of the structure of the collection box of a glue cleaning device for a dispensing needle head proposed by the present invention;

[0034] Figure 10 FIG. is a schematic diagram of the structure of the nozzle of a glue cleaning device for a dispensing needle head proposed by the present invention.

[0035] In the figure: 1. Base; 101. Glue cleaning tank;

[0036] 2. Wiping part; 201. Rotating roller; 202. Circulating belt; 2021. Installation groove; 203. Wiping rod; 2031. Installation pin; 2032. Torsion spring; 204. U-shaped seat; 2041. Installation hole; 205. Wiping cotton; 206. Constraint plate;

[0037] 3. Scraping part; 301. Rotating rod; 302. Mesh sleeve; 303. Abutting plate; 3031. First plate body; 3032. Second chute; 3033. Second plate body; 3034. Spring;

[0038] 4. T-shaped plate; 401. First chute; 402. Slide rail; 403. L-shaped connecting block; 404. Limiting rod;

[0039] 5. First slider; 6. Hollow rod; 7. Actuating element; 8. Second slider; 9. Vertical rod; 10. Brush;

[0040] 11. Collection box; 1101. Return pipe;

[0041] 12. Y-shaped hose; 13. Filter grille; 14. Bracket; 15. Sprayer; 1501. Water inlet pipe; 16. Scraper; 17. Cam. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 should not be construed as a limitation to the present invention.

[0044] Specifically, please refer to Figures 1-10 , a glue dispensing needle cleaning device specifically includes:

[0045] Base 1 is provided with a glue cleaning groove 101 filled with cleaning liquid inside; a wiping part 2 is installed in the glue cleaning groove 101; the wiping part 2 includes two rollers 201 rotatably installed on the groove wall of the glue cleaning groove 101, and a circulating belt 202 is tensioned between the two rollers 201; a scraping part 3 is installed in the glue cleaning groove 101 and located at the conveying end of the circulating belt 202; the scraping part 3 includes a rotating rod 301 rotatably installed on the groove wall of the glue cleaning groove 101, a belt is connected between the rotating rod 301 and the adjacent roller 201, a mesh sleeve 302 is fixedly installed on the rotating rod 301, and abutting plates 303 in contact with the circulating belt 202 are equidistantly installed on the outer circumferential surface of the mesh sleeve 302; a T-shaped plate 4 is fixedly installed on the inner bottom surface of the groove of the glue cleaning groove 101, a first sliding groove 401 is opened, the extending direction of the first sliding groove 401 is perpendicular to the extending direction of the glue cleaning groove 101, a first slider 5 is slidably installed in the first sliding groove 401, a hollow rod 6 is fixedly installed on the first slider 5, and the hollow rod 6 is in contact with the abutting plate 303; an actuating element 7 is fixedly installed on the T-shaped plate 4, and a cam 17 is installed at its output end for driving the reciprocating movement of the first slider 5.

[0046] The glue cleaning device for the dispensing needle head provided by the present invention, the dispensing needle head enters the glue cleaning groove 101 and remains stationary above the circulating belt 202. The actuating element 7 drives the cam 17 to make the first slider 5 reciprocate along the first sliding groove 401, push the hollow rod 6 to move back and forth, push the abutting plate 303 to make the whole scraping part 3 rotate. When the scraping part 3 rotates, it drives the roller 201 to rotate, thereby indirectly affecting the operation of the circulating belt 202, forming a cooperative cleaning mechanism, enabling the wiping part 2 to clean the dispensing needle head. At the same time, the vibration generated by the back-and-forth movement of the hollow rod 6 causes the colloid adhering to the abutting plate 303 to fall off. The whole cleaning process is highly automated, improving the overall working efficiency.

[0047] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings.

[0048] Embodiment 1:

[0049] Please refer to Figures 1-10 , a glue cleaning device for a dispensing needle head, including a base 1, provided with a glue cleaning groove 101 filled with cleaning liquid inside for dissolving and removing the colloid on the dispensing needle head;

[0050] a wiping part 2 is installed in the glue cleaning groove 101. The wiping part 2 includes two rollers 201 rotatably installed on the groove wall of the glue cleaning groove 101, and a circulating belt 202 is tensioned between the two rollers 201; refer to Figure 3 and Figure 4, the wiping part 2 further includes a wiping rod 203. Installation grooves 2021 are equidistantly formed on both sides of the endless belt 202, and a U-shaped seat 204 is fixedly installed in the installation groove 2021. The wiping rod 203 is rotatably installed in the U-shaped seat 204. A wiping cotton 205 and a restraint plate 206 are fixedly installed on the wiping rod 203. The restraint plate 206 is installed on the rollers 201 on both sides of the endless belt 202, and its bottom is fixedly connected to the inner bottom surface of the glue cleaning tank 101 to maintain the structural stability. It should be noted that the two ends of the restraint plate 206 are parallel to the endless belt 202, the middle part is perpendicular to the endless belt 202, and the middle part and the parallel parts at both ends are integrally connected in a twisted manner. In this way, during the movement of the wiping rod 203, according to the shape of the restraint plate 206, it changes from the original horizontal open state to a vertical state, and a wiping cavity is formed between the wiping rods 203 in the vertical state on both sides to wipe and remove glue from the dispensing needle tip;

[0051] A scraper 16 is fixedly installed in the glue cleaning tank 101. The scraper 16 is located at the initial end of the travel of the endless belt 202 and abuts against the wiping cotton 205, and is used to scrape off the excess cleaning liquid on the wiping cotton 205 to keep the wiping cotton 205 in a relatively dry state, increase the contact with the dispensing head, and better remove glue;

[0052] The scraping part 3 is installed in the glue cleaning tank 101 and is located at the conveying end of the endless belt 202; the scraping part 3 includes a rotating rod 301 rotatably installed on the tank wall of the glue cleaning tank 101. A belt is connected between the rotating rod 301 and the adjacent roller 201. A mesh sleeve 302 is fixedly installed on the rotating rod 301, and abutting plates 303 in contact with the endless belt 202 are equidistantly installed on the outer circumferential surface of the mesh sleeve 302; a T-shaped plate 4 is fixedly installed on the inner bottom surface of the glue cleaning tank 101, and a first sliding groove 401 is formed in the T-shaped plate 4. The extending direction of the first sliding groove 401 is perpendicular to the extending direction of the glue cleaning tank 101. A first slider 5 is slidably installed in the first sliding groove 401, and a hollow rod 6 is fixedly installed on the first slider 5. The hollow rod 6 is in contact with the abutting plate 303;

[0053] An actuating element 7 is fixedly installed on the T-shaped plate 4, and a cam 17 is installed at its output end for driving the reciprocating movement of the first slider 5. Preferably, the actuating element 7 is preferably an adjustable-speed motor, and its rotation speed is changed by adjusting the input voltage, current or frequency. Therefore, the speed of the cleaning process is adjusted according to actual needs, so as to optimize the cleaning efficiency and effect.

[0054] Refer to Figure 4 , an installation hole 2041 is formed in the U-shaped seat 204. The wiping rod 203 has an installation pin 2031 adapted to the installation hole 2041. A torsion spring 2032 is movably installed on the installation pin 2031. The two ends of the torsion spring 2032 respectively abut against the hole wall of the installation hole 2041 and the wiping rod 203.

[0055] Through the setting of the above structure:

[0056] In the preparation stage, the dispensing needle head enters the glue cleaning tank 101 which is filled with a cleaning liquid for dissolving and removing the colloid on the dispensing needle head. The wiping part 2 is located in the glue cleaning tank 101 and is supported by two rotating rollers 201 with a circulating belt 202 tensioned between them. Installation grooves 2021 are provided on both sides of the circulating belt 202, and a U-shaped seat 204 is fixedly installed in each groove.

[0057] During the wiping process, the wiping rod 203 is rotatably installed in the U-shaped seat 204, and a wiping cotton 205 is fixed on the wiping rod 203. When the circulating belt 202 moves, the wiping rod 203 changes from a horizontal open state to a vertical state according to the shape change of the constraint plate 206, so that a wiping cavity is formed between the two wiping rods 203 in the vertical state on both sides. The dispensing needle head enters this wiping cavity and is wiped by the wiping cotton 205 to remove the glue.

[0058] Initial cleaning and drying: After the wiping cotton 205 finishes wiping the dispensing needle head, according to the shape change of the constraint plate 206 again, under the action of the torsion spring 2032, it changes back from the vertical state to the horizontal state. As the circulating belt 202 moves to its conveying end, it contacts the abutting plate 303 on the rotating rod 301, and the colloid is scraped onto the abutting plate 303. The actuating element 7, preferably an adjustable-speed motor, drives the cam 17, causing the first slider 5 to reciprocate along the first chute 401, pushing the hollow rod 6 to move back and forth to push the abutting plate 303, making the scraping part 3 rotate as a whole. When the scraping part 3 rotates, it drives the rotating roller 201 to rotate, thereby indirectly affecting the operation of the circulating belt 202. At the same time, the vibration generated by this reciprocating motion helps to remove the stubborn colloid on the abutting plate 303, further enhancing the cleaning effect.

[0059] Secondary cleaning: After the wiping cotton 205 finishes wiping the dispensing needle head, the circulating belt 202 continues to move to the initial end of the stroke, where a scraper 16 is provided. The scraper 16 abuts against the wiping cotton 205 to scrape off the excess cleaning liquid on the wiping cotton 205, keeping the wiping cotton 205 in a relatively dry state so as to better contact and remove the colloid on the next dispensing needle head.

[0060] Embodiment 2:

[0061] The glue cleaning device provided in Embodiment 1 is further optimized. Specifically, as Figure 6 shown, the abutting plate 303 includes a first plate body 3031 fixed to the mesh sleeve 302. A second chute 3032 is formed on the first plate body 3031, and a second plate body 3033 is slidably installed in the second chute 3032. The contact surface between the second plate body 3033 and the circulating belt 202 is an inclined surface. Among them, a spring 3034 is fixedly connected between the second plate body 3033 and the inner side surface of the groove of the second chute 3032.

[0062] With the above structure, when the loop belt 202 moves to the position of the abutment plate 303, it first contacts the inclined surface of the second plate body 3033. Due to the existence of the spring 3034, the second plate body 3033 ensures the best contact with the loop belt 202, enabling the colloid to directly fall on the second plate body 3033. At the same time, as the second plate body 3033 rotates, the colloid adhering to the wiping cotton 205 is scraped off.

[0063] Embodiment Three:

[0064] Further optimize the glue cleaning device provided in Embodiment One or Two. Specifically, as Figure 7 and Figure 8 shown, a slide rail 402 is fixedly installed on the T-shaped plate 4. Symmetrically arranged second sliders 8 are slidably installed on the slide rail 402. A vertical rod 9 is fixedly installed on the second slider 8. A brush 10 is fixedly installed at one end of the vertical rod 9 close to the loop belt 202. Among them, an L-shaped connecting block 403 is rotatably installed on the T-shaped plate 4. Two ends of the L-shaped connecting block 403 are respectively rotatably connected to the first slider 5 and the second slider 8.

[0065] A limiting rod 404 is fixedly installed on the T-shaped plate 4. The hollow rod 6 is sleeved on the limiting rod 404.

[0066] With the above structure, when the actuator 7 drives the cam 17 to make the first slider 5 reciprocate along the first chute 401, the L-shaped connecting block 403 acts accordingly, driving the second slider 8 to reciprocate synchronously along the slide rail 402. The vertical rod 9 and the brush 10 on the second slider 8 move accordingly. The brush 10 contacts the loop belt 202 and the wiping cotton 205, providing an additional cleaning effect, especially for residues that are difficult to remove. The hollow rod 6 is sleeved on the limiting rod 404, ensuring its stable movement driven by the actuator 7 and improving the reliability and precision of the entire cleaning process.

[0067] Embodiment Four:

[0068] Further optimize the glue cleaning device provided in Embodiment 1. Specifically, as Figure 2 and Figure 9 shown, a collection box 11 is installed in the glue cleaning tank 101. A return pipe 1101 is fixedly installed on the collection box 11. A Y-shaped hose 12 is fixedly connected between the return pipe 1101 and the vertical rod 9. A water pump is installed on the Y-shaped hose 12. A filter grille 13 is installed at one end of the return pipe 1101 away from the Y-shaped hose 12.

[0069] Through the arrangement of the above structure, the glue dispensing needle enters the glue cleaning tank 101 and is preliminarily cleaned by the wiping cotton 205. The waste glue and other impurities generated during the cleaning process are scraped off by the scraping part 3, and fall into the collection box 11 below as the scraping part 3 rotates. The filter grille 13 at the end of the reflux pipe 1101 can effectively block large particles of impurities, ensuring that only the cleaning liquid that has been preliminarily filtered can enter the Y-type hose 12. The water pump installed on the Y-type hose 12 pumps the filtered cleaning liquid to the brush 10 on the vertical pole 9. The brush 10 uses the recycled cleaning liquid to perform additional cleaning on the circulating belt 202, thereby improving the cleaning efficiency and reducing the waste of water resources. After use, the cleaning liquid will return to the glue cleaning tank 101 or directly flow into the collection box 11, forming a closed-loop cleaning and recycling system.

[0070] It should be noted that the filter grid 13 is installed in the collection box 11 by magnetic attraction. The bottom of the collection box 11 has a protruding card point, and the bottom surface of the glue cleaning tank 101 has a card groove that matches the card point. The collection box 11 is carded in the glue cleaning tank 101 for easy disassembly and installation.

[0071] Embodiment five:

[0072] The glue cleaning device provided in Example 1 is further optimized. Specifically, Figure 2 and Figure 10 As shown, a bracket 14 is fixedly installed in the glue cleaning tank 101, a nozzle 15 is fixedly installed on the bracket 14, an input end of the nozzle 15 is fixedly connected to a water inlet pipe 1501 and a pump body is installed, and an output end of the nozzle 15 faces the end of the travel of the circulating belt 202.

[0073] Through the arrangement of the above structure, as the circulating belt 202 continues to move to the end of the stroke, it reaches the coverage range of the nozzle 15. At this time, the nozzle 15 sprays the cleaning liquid or clean water onto the circulating belt 202 and the wiping cotton 205 through the pressure provided by the pump body to rinse them. At the same time, the water flow rinses the colloid onto the second plate 3033, and the excess water is discharged from the mesh sleeve 302, and the colloid attached to the other second plates 3033 is flushed into the collection box 11.

[0074] A method for removing glue from a dispensing needle comprises the following steps:

[0075] Step 1: The circulating belt 202 drives the wiping cotton 205 to move, and the wiping rod 203 abuts against the scraper 16 to scrape off the excess cleaning liquid, so that the wiping cotton 205 remains in a relatively dry state;

[0076] Step 2: The dispensing needle enters the glue cleaning tank 101, maintains a stable position, and is located above the endless belt 202 supported by two rollers 201 and tensioned between them. The endless belt 202 drives the wiping cotton 205 to move. The wiping rod 203 changes from a horizontal open state to a vertical state according to the shape change of the restraint plate 206, forming a wiping cavity to wipe and remove the glue on the dispensing needle;

[0077] Step 3: As the endless belt 202 continues to move to the conveying end, it contacts the abutting plate 303 on the rotating rod 301. Among them, the second plate body 3033 can flexibly adjust its position due to the existence of the spring 3034 to ensure the best contact with the endless belt 202, and clean the colloid adhered to the wiping cotton 205;

[0078] Step 4: The actuator 7 drives the cam 17, causing the first slider 5 to reciprocate along the first chute 401, pushing the hollow rod 6 to move back and forth. The generated vibration helps to remove the stubborn colloid on the abutting plate 303. At the same time, it pushes the abutting plate 303 to rotate the scraping part 3 as a whole, indirectly affecting the operation of the endless belt 202 and enhancing the cleaning effect;

[0079] Step 5: The second slider 8 reciprocates synchronously along the slide rail 402 under the action of the L-shaped connecting block 403, and the brush 10 on the vertical rod 9 moves accordingly, contacting the endless belt 202 and the wiping cotton 205 to provide additional physical cleaning, especially for difficult-to-remove residues;

[0080] Step 6: The spray head 15 sprays the cleaning liquid or clean water onto the endless belt 202 and the wiping cotton 205 under the pressure provided by the pump body for rinsing. The rinsed liquid together with the residues flows into the collection box 11. Through the reflux pipe 1101 and the Y-shaped hose 12 system, the water pump in it re-transports the filtered cleaning liquid to the brush 10 on the vertical rod 9, forming a closed-loop cleaning and recycling system

[0081] Step 7: Regularly check and clean the filter grille 13 to prevent blockage from affecting the normal operation of the system.

[0082] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A dispensing needle cleaning device, characterized in that, Comprising: A base (1) is provided with a glue cleaning groove (101) and filled with cleaning liquid inside; A wiping part (2) is installed in the glue cleaning groove (101); The wiping part (2) includes two rotating rollers (201) rotatably installed on the groove wall of the glue cleaning groove (101), and a circulating belt (202) is tensioned between the two rotating rollers (201); A scraping part (3) is installed in the glue cleaning groove (101) and located at the conveying end of the circulating belt (202); The scraping part (3) includes a rotating rod (301) rotatably installed on the groove wall of the glue cleaning groove (101). A belt is connected between the rotating rod (301) and the adjacent rotating roller (201). A mesh sleeve (302) is fixedly installed on the rotating rod (301), and abutting plates (303) in contact with the circulating belt (202) are equidistantly installed on the outer circumferential surface of the mesh sleeve (302); A T-shaped plate (4) is fixedly installed on the inner bottom surface of the groove of the glue cleaning groove (101), and is provided with a first sliding groove (401). The extending direction of the first sliding groove (401) is perpendicular to the extending direction of the glue cleaning groove (101). A first slider (5) is slidably installed in the first sliding groove (401). A hollow rod (6) is fixedly installed on the first slider (5), and the hollow rod (6) is in contact with the abutting plate (303); An actuating element (7) is fixedly installed on the T-shaped plate (4), and a cam (17) is installed at its output end for driving the reciprocating movement of the first slider (5).

2. The glue cleaning device for a dispensing needle tip according to claim 1, characterized in that, The wiping part (2) further includes a wiping rod (203). Installation grooves (2021) are equidistantly arranged on both sides of the circulating belt (202), and U-shaped seats (204) are fixedly installed in the installation grooves (2021). The wiping rod (203) is rotatably installed in the U-shaped seats (204). Wiping cotton (205) is fixedly installed on the wiping rod (203), and Restraining plates (206) are installed on the rotating rollers (201) on both sides of the circulating belt (202), and their bottoms are fixed to the inner bottom surface of the groove of the glue cleaning groove (101).

3. The glue cleaning device for a dispensing needle tip according to claim 2, wherein, Installation holes (2041) are provided on the U-shaped seats (204). Installation pins (2031) adapted to the installation holes (2041) are provided on the wiping rod (203). A torsion spring (2032) is movably installed on the installation pins (2031), and both ends of the torsion spring (2032) are respectively in contact with the hole wall of the installation hole (2041) and the wiping rod (203).

4. The glue cleaning device for a dispensing needle tip according to claim 1, wherein, The abutting plate (303) includes a first plate body (3031) fixed to the mesh sleeve (302). A second sliding groove (3032) is provided on the first plate body (3031). A second plate body (3033) is slidably installed in the second sliding groove (3032). The contact surface of the second plate body (3033) with the circulating belt (202) is an inclined surface; Wherein, a spring (3034) is fixedly connected between the second plate body (3033) and the inner side surface of the groove of the second sliding groove (3032).

5. The glue cleaning device for a dispensing needle head according to claim 1, wherein, A slide rail (402) is fixedly installed on the T-shaped plate (4). Symmetrically arranged second sliders (8) are slidably installed on the slide rail (402). A vertical rod (9) is fixedly installed on the second slider (8). A brush (10) is fixedly installed at one end of the vertical rod (9) close to the circulating belt (202). Among them, an L-shaped connecting block (403) is rotatably installed on the T-shaped plate (4). The two ends of the L-shaped connecting block (403) are respectively rotatably connected to the first slider (5) and the second slider (8).

6. The glue cleaning device for a dispensing needle according to claim 5, characterized in that, A limiting rod (404) is fixedly installed on the T-shaped plate (4). The hollow rod (6) is sleeved on the limiting rod (404).

7. The glue cleaning device for a dispensing needle according to claim 5, characterized in that, A collection box (11) is installed in the glue cleaning tank (101). A return pipe (1101) is fixedly installed on the collection box (11). A Y-shaped hose (12) is fixedly connected between the return pipe (1101) and the vertical rod (9). A water pump is installed on the Y-shaped hose (12). A filter grille (13) is installed at one end of the return pipe (1101) far from the Y-shaped hose (12).

8. The glue cleaning device for a dispensing needle according to claim 1, characterized in that, A bracket (14) is fixedly installed in the glue cleaning tank (101). A spray head (15) is fixedly installed on the bracket (14). The input end of the spray head (15) is fixedly connected to a water inlet pipe (1501) and a pump body is installed. The output end of the spray head (15) faces the end of the travel of the circulating belt (202).

9. The glue cleaning device for a dispensing needle tip according to claim 2, characterized in that, A scraper (16) is fixedly installed in the glue cleaning tank (101). The scraper (16) is located at the beginning of the travel of the circulating belt (202) and abuts against the wiping cotton (205).

10. A method for cleaning a dispensing needle head, according to the dispensing needle head cleaning device described in any one of claims 1-9, characterized in that, Including the following steps: Step 1: Move the dispensing needle to be cleaned to the designated cleaning position; Step 2: Conduct a preliminary physical cleaning of the dispensing needle by wiping to remove most of the dry glue or impurities on the surface; Step 3: Check whether the dispensing needle has been completely cleaned, confirm that there is no residual colloid or other impurities, and prepare for the next round of dispensing operation; Step 4: Clean the wiping device and prepare for the next round of glue cleaning operation.

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