Efficient cleaning device for PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCB (Printed Circuit Board) cleaning, and discloses an efficient cleaning device for a PCB, which comprises a cleaning box, a flow dividing pipe is arranged on a mounting block at the upper end of the middle position of the inner side wall of the cleaning box, and a spray head connected with the output end of the flow dividing pipe is novel in structure. A transmission wheel is installed at the input end of the sprayer and connected with a screw, the screw is in threaded fit with an internal thread sleeve, the internal thread sleeve is connected with a piston, and a sealing block is arranged at the air inlet end. In actual use, the first motor serves as a power source, and the rotating speed can be flexibly adjusted according to actual cleaning requirements. The motor runs to drive the transmission wheel, the transmission wheel transmits power to the screw rod, and when the screw rod rotates, the internal thread sleeve in threaded connection with the screw rod can do linear motion in the spray head, and then the piston is driven to move front and back. Through linkage of the mechanical structure, the pressure applied to the cleaning liquid by the piston can be accurately and continuously adjusted.

Description

Technical Field

[0001] This utility model belongs to the technical field of PCB circuit board cleaning, and specifically relates to a high-efficiency cleaning device for PCB circuit boards. Background Technology

[0002] In today's booming modern electronics industry, PCBs (Printed Circuit Boards), as a key component of various electronic devices, face increasingly stringent manufacturing processes and quality requirements. During production, PCB surfaces are highly susceptible to various contaminants and impurities, including residual flux, oil, dust, and chemical residues from etching, electroplating, and other processes. If these contaminants are not thoroughly removed, they can severely impact the electrical performance, reliability, and lifespan of the PCB, thereby negatively affecting the overall quality of the electronic device.

[0003] Traditional PCB cleaning technologies have revealed numerous limitations in practical applications. Most conventional cleaning equipment uses fixed nozzles or simple spray patterns, with constant nozzle output pressure that is difficult to adjust flexibly. This makes it challenging to achieve precise and efficient cleaning when faced with different types and levels of dirt. For stubborn stains, the fixed pressure of the water flow is ineffective in breaking them down, resulting in poor cleaning. Furthermore, when handling delicate components on the circuit board, excessive pressure can easily damage the components. Therefore, those skilled in the art have provided a high-efficiency PCB cleaning device to address the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency cleaning device for PCB circuit boards, which solves the technical problems that fixed-pressure water flow cannot effectively break up the flow and the cleaning effect is poor; and that when dealing with delicate parts on the circuit board, excessive pressure can easily damage the components. The invention aims to achieve precise control of the spray pressure of the cleaning fluid from the nozzle and achieve high-efficiency cleaning.

[0005] To address the aforementioned technical problems, this utility model provides a high-efficiency cleaning device for PCB circuit boards, comprising a cleaning tank. A diverter pipe is mounted on a mounting block at the upper middle position of the inner wall of the cleaning tank, and its output end is connected to a novel nozzle structure. A drive wheel is mounted on the nozzle input end, and the drive wheel is connected to a screw. The screw is threadedly engaged with an internally threaded sleeve, which is connected to a piston. A sealing block is present at the air inlet end.

[0006] The first motor drives the transmission wheel, which in turn drives the piston to move. This allows for precise control of the spray pressure of the cleaning fluid from the nozzle, achieving efficient cleaning.

[0007] Furthermore, the liquid inlet located in the middle of one side wall of the cleaning tank has its output end connected to a conveying screw, with a conveying block threaded onto the screw. A double-ended screw is rotatably connected to the top adjustment groove of the conveying block, and clamps are threaded onto the front and rear sides of the outer side wall of the double-ended screw. A motor inside the motor cover drives the double-ended screw, which can easily clamp and fix the PCB circuit board placed on the conveying block, ensuring the stability of the circuit board during the cleaning process.

[0008] Furthermore, a filter plate is installed at the bottom center of the inner wall of the cleaning tank, and several filter screens are installed on the rear side of the circulating water tank below. Several arrayed centrifuge discs are rotatably connected to the bottom. The waste liquid after cleaning is first initially filtered by the filter plate, then filtered a second time by the filter screens, and then centrifuged by the centrifuge discs, effectively purifying the waste liquid and ensuring the recycling of the cleaning solution.

[0009] Furthermore, the circulating water tank is connected to the cleaning water tank located in the middle of the bottom of the inner wall of the circulating liquid tank. The pump on one side of the circulating water tank draws the treated liquid into the new liquid tank. The pump at the top of the new liquid tank delivers the liquid to the distribution pipe through the water pipe and the connection port, realizing the recycling of the cleaning liquid, reducing costs and pollution.

[0010] Furthermore, the cleaning tank has a liquid inlet on one side for inputting cleaning fluid to drive the conveyor block, and the circulating liquid tank has an inlet on top for replenishing new cleaning fluid, maintaining the cleanliness and performance of the cleaning fluid, and ensuring that the cleaning work continues to be carried out efficiently.

[0011] Furthermore, a primary motor drives a transmission wheel, which in turn uses a transmission belt to synchronize the rotation of several transmission wheels arranged in an array. This precisely controls the movement of the piston inside the nozzle, ensuring consistent cleaning results from each nozzle and improving overall cleaning efficiency.

[0012] Furthermore, a second motor installed at the top center of the cleaning tank can drive other components inside the cleaning tank to perform auxiliary movements, such as adjusting the nozzle angle and stirring the cleaning solution, thereby further improving the cleaning effect and meeting the cleaning needs of different PCB circuit boards.

[0013] Furthermore, an opening is provided in the middle of one side wall of the cleaning tank, away from the second motor, to match the conveyor block, facilitating the loading and unloading of PCB circuit boards and making the entire cleaning process smooth and efficient.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, the first motor serves as the power source, and its speed can be flexibly adjusted according to actual cleaning needs. The motor drives the transmission wheel, which transmits power to the screw. When the screw rotates, the internally threaded sleeve connected to it moves linearly within the nozzle, thereby driving the piston to move back and forth. Through this mechanical linkage, the pressure applied by the piston to the cleaning fluid can be precisely and continuously adjusted. For example, for PCB circuit board areas with a large amount of grease or dried dirt, the speed of the first motor can be increased to generate greater thrust from the piston, causing the cleaning fluid to be sprayed from the nozzle at higher pressure, effectively breaking down stubborn stains. Conversely, for areas near delicate and fragile electronic components on the circuit board, the motor speed can be reduced to decrease the piston thrust, allowing for gentler cleaning and avoiding damage to the components.

[0016] 2. In this invention, the waste liquid after cleaning first passes through a filter plate located at the bottom center of the inner wall of the cleaning tank. The filter plate can intercept large impurities in the waste liquid, such as larger dust particles and solder slag that fall off during circuit board cleaning. This preliminary filtration step prevents large particles from entering the subsequent circulation system, avoiding damage to subsequent equipment, and also reduces the burden on subsequent filtration stages.

[0017] 3. In this invention, the waste liquid, after initial filtration by the filter plate, flows into a circulating water tank. Several filter screens installed at the rear of the circulating water tank perform secondary filtration on the waste liquid. These filter screens have smaller pore sizes, further removing tiny particulate impurities from the waste liquid. Simultaneously, several arrayed centrifugal discs, rotatably connected to the bottom of the circulating water tank, rotate at high speed, using centrifugal force to separate impurities from the liquid. This centrifugal treatment method can more effectively remove impurities with densities different from the liquid, such as metal powder, greatly improving the purification level of the waste liquid and ensuring that the purified liquid meets the basic requirements for reuse in cleaning.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0021] Figure 2This is a top view of the structure of this utility model;

[0022] Figure 3 This is a frontal perspective three-dimensional schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the rear view structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the nozzle in this utility model.

[0025] Legend: 1. Cleaning tank; 2. Mounting block; 3. Diverter pipe; 4. First motor; 5. Drive belt; 6. Nozzle; 7. Circulating liquid tank; 8. New liquid tank; 9. Filter screen; 10. Centrifuge disc; 11. Base; 12. Liquid pump; 13. Liquid delivery port; 14. Liquid inlet; 15. Liquid delivery pump; 16. Through port; 17. Clamp; 18. Filter plate; 19. Motor cover; 20. Conveying block; 21. Lead screw; 22. Second motor; 23. Connection port; 24. Drive wheel; 25. Sealing block; 26. Screw; 27. Internal threaded sleeve; 28. Piston; 29. ​​Nozzle; 30. Liquid inlet pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example:

[0028] like Figures 1 to 5 As shown, a high-efficiency cleaning device for PCB circuit boards is first placed on a stable workbench, ensuring that the cleaning tank 1 and the circulating liquid tank 7 are securely supported by the base 11 at the bottom. All components are tightly connected, and the electrical circuits are safely connected to the power supply.

[0029] PCB board loading: Open the opening 16 in the middle of one side wall of the cleaning tank 1, away from the second motor 22, and carefully place the PCB board to be cleaned onto the conveyor block 20. Start the motor inside the motor cover 19. The motor output shaft drives the double-ended lead screw 21 to rotate in the adjustment groove, so that the clamp 17 moves towards each other along the threaded trajectory on the double-ended lead screw 21, accurately clamping and fixing the PCB board to ensure that the board will not shake during the cleaning process.

[0030] Cleaning process: Cleaning fluid delivery and circuit board movement: Cleaning fluid is introduced through the fluid inlet 13. Under the push of the delivery screw, the delivery block 20 moves along the predetermined track, which drives the PCB circuit board to slowly move horizontally in the cleaning tank 1, ensuring that all parts of the circuit board can be cleaned.

[0031] High-pressure jet cleaning: The first motor 4 is started, with one of the first motors 4 operating first. Its output shaft drives the connected transmission wheel 24 to rotate at high speed. The transmission belt 5 operates accordingly, transmitting power to the other transmission wheels 24 arranged in an array, achieving synchronous rotation. The rotation of the transmission wheels 24 causes the screw 26 to rotate synchronously. When the screw 26 rotates, the internally threaded sleeve 27, which is threaded to it, performs linear reciprocating motion within the nozzle 6, thereby driving the piston 28 to move back and forth within the nozzle 6. The cleaning fluid in the diversion pipe 3 flows into the nozzle 6 through the threaded liquid inlet pipe 30. When the piston 28 is pushed towards the nozzle 29, the strong pressure propels the cleaning fluid in the nozzle 6 out through the nozzle 29 at high speed, forming a fine and powerful water jet that washes away dirt and impurities on the surface of the PCB circuit board. Because the piston 28 and the nozzle 29 are precisely matched, the spray pressure of the cleaning fluid can be accurately controlled, achieving efficient cleaning.

[0032] Waste liquid treatment and recycling: Primary filtration: The waste liquid after cleaning, carrying impurities, flows down from the surface of the PCB circuit board. After passing through the filter plate 18 at the bottom center of the inner wall of the cleaning tank 1, large impurities are intercepted, and the waste liquid flows into the circulating water tank below.

[0033] Deep purification: Inside the circulating water tank, several filter screens 9 installed at the rear perform secondary filtration of the waste liquid, further removing tiny particles. Simultaneously, several arrayed centrifugal discs 10, rotatably connected to the bottom of the circulating water tank, rotate at high speed, using centrifugal force to separate impurities from the liquid, greatly improving the purification effect. The purified liquid flows into a cleaning water tank located in the middle of the bottom of the inner wall of the circulating liquid tank 7, which is connected to the circulating water tank.

[0034] Recycling: The pump 12 installed on one side of the circulating water tank is activated to pump the treated liquid into the new liquid tank 8. The delivery pump 15 at the top of the new liquid tank 8 delivers the liquid through a water pipe and connection port 23 to the distribution pipe 3, realizing the recycling of the cleaning solution. In addition, new cleaning solution can be added to the circulating liquid tank 7 through the inlet 14 as needed to maintain the cleanliness and performance of the cleaning solution.

[0035] Cleaning complete: After the PCB circuit board has completed the entire cleaning process in the cleaning tank 1, stop the operation of the first motor 4, the liquid pump 12, the liquid delivery pump 15 and other equipment.

[0036] The port 16 is reopened, and the conveyor block 20 delivers the cleaned PCB circuit board out of the cleaning tank 1, completing a full cleaning cycle. During this process, the second motor 22 can be started as needed to drive specific components inside the cleaning tank 1 to perform auxiliary movements, such as stirring the cleaning fluid and adjusting the nozzle angle, to further improve the cleaning effect.

[0037] As can be seen from the above embodiments, this cleaning device, through the coordinated operation of its components, not only achieves efficient cleaning of PCB circuit boards, but also effectively reduces production costs and environmental pollution through the recycling of cleaning fluid, thus meeting the high-quality requirements of the modern electronics manufacturing industry for PCB circuit board cleaning.

[0038] Working principle: The PCB circuit board to be cleaned is placed on the conveyor block 20 through the port 16. The motor inside the motor cover 19 drives the double-headed lead screw 21 to rotate, so that the clamp 17 moves towards or away from each other on the double-headed lead screw 21, thereby clamping and fixing the PCB circuit board.

[0039] During the cleaning process, the cleaning fluid input from the liquid inlet 13 pushes the conveyor block 20 to move under the action of the conveyor screw, causing the PCB circuit board to move within the cleaning tank 1. The first motor 4 is started, and one of the first motors 4 drives the connected transmission wheel 24 to rotate. Through the transmission belt 5, several transmission wheels 24 arranged in an array rotate synchronously. The rotation of the transmission wheel 24 drives the screw 26 to rotate. When the screw 26 rotates, the internally threaded sleeve 27, which is threaded to it, moves linearly within the nozzle 6, thereby driving the piston 28 to move. The liquid inlet pipe 30 is threadedly connected to the diversion pipe 3, and the cleaning fluid enters the nozzle 6 from the diversion pipe 3 through the liquid inlet pipe 30. When the piston 28 moves towards the nozzle 29, the cleaning fluid in the nozzle 6 is sprayed out at high speed through the nozzle 29 to clean the PCB circuit board. Because the piston 28 and the nozzle 29 are matched, good pressure control can be achieved for the spraying of the cleaning fluid, resulting in efficient cleaning. The waste liquid after cleaning is filtered by the filter plate 18 and flows into the circulating water tank at the bottom center of the inner wall of the cleaning tank 1. Inside the circulating water tank, several filter screens 9 installed at the rear further filter the waste liquid. Simultaneously, several arrayed centrifuge discs 10, rotatably connected to the bottom of the circulating water tank, rotate to centrifuge the waste liquid, improving the purification effect. The purified liquid enters a cleaning water tank located in the middle of the bottom of the inner wall of the circulating liquid tank 7, which is connected to the circulating water tank. A pump 12 installed on one side of the circulating water tank pumps the treated liquid into a new liquid tank 8. A delivery pump 15 at the top of the new liquid tank 8 delivers the liquid through a water pipe and connection port 23 to the distribution pipe 3, achieving the recycling of the cleaning liquid. New cleaning liquid can be added to the circulating liquid tank 7 through the inlet 14. Furthermore, a second motor 22 can drive other components inside the cleaning tank 1 to perform auxiliary movements, further improving the cleaning effect. After cleaning, the outlet 16 is opened, and the conveyor block 20 can deliver the cleaned PCB circuit board out of the cleaning tank 1. The entire device, through the coordinated work of its components, achieves efficient cleaning of the PCB circuit board and the recycling of the cleaning liquid.

[0040] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0041] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high efficiency cleaning device for PCB circuit boards, characterized in that, The utility model relates to a kind of high-efficiency cleaning device for PCB circuit board, including: Washing tank (1), installation block (2) is installed in the middle position of the inner side wall upper end position of washing tank (1), shunt pipe (3) is installed in the middle position of the inner side wall of installation block (2), the output end of shunt pipe (3) is connected with spray head (6), it is characterized in that, the input end of spray head (6) is installed with transmission wheel (24), the output end of transmission wheel (24) is connected with screw rod (26), the outer side wall of screw rod (26) is connected with internal thread sleeve (27) in screw thread, the output end of internal thread sleeve (27) is connected with piston (28), the air inlet end of spray head (6) is installed with sealing block (25), the input end of spray head (6) has liquid inlet pipe (30), and the output end of corresponding shunt pipe (3) is connected with liquid inlet pipe (30) in screw thread, the input end of any one transmission wheel (24) is installed with first motor (4), and several first motor (4) are arrayed, and the outer side wall of first motor (4) is sleeved with transmission belt (5), the output end of spray head (6) is installed with nozzle (29), and piston (28) is matched with corresponding nozzle (29).

2. The high-efficiency cleaning device for PCB circuit board according to claim 1, wherein: A liquid feeding port (13) is installed in the middle position of one side wall of the washing tank (1), the output end of the liquid feeding port (13) penetrates the inner side wall of the washing tank (1), and a conveying screw rod is connected to the output end of the liquid feeding port (13); the other end of the conveying screw rod is installed in the middle position of one side wall of the washing tank (1); and a conveying block (20) is connected to the outer side wall of the conveying screw rod in screw thread.

3. The high-efficiency cleaning device for PCB circuit board according to claim 2, wherein: An adjusting groove is formed in the middle position of the top of the conveying block (20); a double-headed screw rod (21) is rotatably connected to the middle position of the inner side wall of the adjusting groove; clamps (17) are connected to the front side and the rear side of the outer side wall of the double-headed screw rod (21) in screw thread; a motor cover (19) is installed in the middle position of the front side wall of the conveying block (20); and the output end of the motor cover (19) is connected to the input end of the double-headed screw rod (21).

4. The high-efficiency cleaning device for PCB circuit board according to claim 3, wherein: A filter plate (18) is installed in the middle bottom position of the inner side wall of the washing tank (1); and a circulating water tank is formed in the bottom of the filter plate (18) and in the middle bottom position of the inner side wall of the washing tank (1).

5. The high-efficiency cleaning device for PCB circuit board according to claim 4, wherein: A circulating liquid tank (7) is installed in the middle position of the front side wall of the washing tank (1); and a cleaning water tank is installed in the middle bottom position of the inner side wall of the circulating liquid tank (7) and communicates with the circulating water tank.

6. The high-efficiency cleaning device for PCB circuit board according to claim 5, wherein: A plurality of filter screens (9) are installed at the rear side of the middle position of the inner side wall of the circulating water tank, and a plurality of array distributed centrifugal discs (10) are rotatably connected at the bottom of the middle position of the inner side wall of the circulating water tank.

7. The device for efficiently cleaning PCB according to claim 6, wherein, A new liquid tank (8) is arranged at the top of the circulating water tank and at the middle position of the inner side wall of the circulating liquid tank (7), a liquid pumping pump (12) is installed at the middle position of the inner side wall of the circulating water tank, and the output end of the liquid pumping pump (12) penetrates the inner side wall of the new liquid tank (8).

8. The device for efficiently cleaning PCB according to claim 7, wherein, The top of the circulating liquid tank (7) is connected with a liquid inlet (14) at the middle position, the output end of the new liquid tank (8) is connected with a liquid sending pump (15), the input end of the shunt pipe (3) is connected with a connecting port (23), and the connecting port (23) is connected with the liquid sending pump (15) through a water pipe.

9. The device for efficiently cleaning PCB according to claim 8, wherein, A second motor (22) is installed at the top of the cleaning tank (1), a base (11) is installed at the bottom of the cleaning tank (1) and the circulating liquid tank (7), a through port (16) is arranged at the middle of the side wall of the cleaning tank (1) and at the side position far from the second motor (22), and the through port (16) is matched with the conveying block (20).

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