A printed circuit board cleaning device

Abstract

This utility model relates to the field of printed circuit board processing technology and discloses a printed circuit board cleaning device, including: an ultrasonic cleaning box, which is rectangular and placed on a table; a limiting structure, which includes a first limiting part and a second limiting part. The first limiting part includes a movable tray disposed outside the ultrasonic cleaning box. Two sets of first limiting frame plates are fixedly installed on the top of the movable tray. Two sets of first clamping plates are disposed inside one side of the two sets of first limiting frame plates. The outer wall of one side of the first clamping plate is fixedly connected to the inner wall of one side of the first limiting frame plate. A soft pad is pasted on the inner wall of the first clamping plate. The second limiting part also includes a guide rod fixedly installed inside the first limiting frame plate to achieve the purpose of clamping and fixing the circuit board, improving the fixing effect of the circuit board, reducing the impact between the circuit board and the inner wall of the device, increasing the service life of the circuit board, reducing the damage to the circuit board, and improving the safety of the device.

Description

Technical Field

[0001] This utility model belongs to the field of printed circuit board processing technology, specifically, it relates to a printed circuit board cleaning device. Background Technology

[0002] During the electronic manufacturing process, printed circuit boards often have residual contaminants such as flux, rosin, and oil on their surface. If cleaning is not thorough, it can lead to problems such as short circuits and electrochemical migration, seriously affecting product reliability.

[0003] Utility model CN217911852U discloses an automatic cleaning device for printed circuit boards, relating to the technical field of circuit board cleaning equipment. It includes a main body with drive rollers rotatably connected to both sides inside the main body. A conveyor belt is provided on the outer sides of the two sets of drive rollers. Support plates are fixed at both ends of the top of the main body. A reciprocating lead screw is rotatably connected between the two sets of support plates, and a sliding frame is movably connected to the outer side of the reciprocating lead screw. In this utility model, during the cleaning process of the printed circuit board driven by the conveyor belt, the two sets of drive rollers and the reciprocating lead screw are connected by the drive belt. The rotation of the reciprocating lead screw drives the sliding frame to reciprocate, thereby driving two sets of spray frames to reciprocate above the conveyor belt. As the printed circuit board moves, the two sets of spray frames reciprocate synchronously to clean the surface of the printed circuit board, resulting in more uniform cleaning and effectively improving the cleaning quality of the printed circuit board.

[0004] However, the above-mentioned patent still has the following problems: spray cleaning is not enough to clean small impurities. Ultrasonic cleaning can be used. During the ultrasonic cleaning process, the circuit board will shift in position, affecting the cleaning effect of the brush. The circuit board will also collide with the inner wall of the ultrasonic device, affecting subsequent use.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the aforementioned technical problem of unstable circuit board placement, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A printed circuit board cleaning device, comprising:

[0008] Ultrasonic cleaning box; the ultrasonic cleaning box is rectangular and is placed on a table.

[0009] The limiting structure includes a first limiting part and a second limiting part. The first limiting part includes a movable tray disposed outside the ultrasonic cleaning chamber. Two sets of first limiting frame plates are fixedly installed on the top of the movable tray. Two sets of first clamping plates are disposed inside one side of the two sets of first limiting frame plates. The outer wall of one side of the first clamping plate is fixedly connected to the inner wall of one side of the first limiting frame plate. A soft pad is attached to the inner wall of the first clamping plate. The second limiting part also includes a guide rod fixedly installed inside the first limiting frame plate. A hole is opened inside the first clamping plate. The guide rod is disposed inside the hole of the first clamping plate. A pull rod is slidably installed inside the first limiting frame plate. A reset spring rod is fixedly installed between the pull rod and the first clamping plate. A circuit board body is disposed on the top of the movable tray. The outer wall of the circuit board body is in close contact with the inner wall of the guide rod.

[0010] In a preferred embodiment of this utility model, a first electrical control box is fixedly installed on one outer wall of the ultrasonic cleaning box. A wire is provided on one outer wall of the first electrical control box, and the first electrical control box is connected to an external power supply through the wire. A hole is opened on the outer wall of the ultrasonic cleaning box, and a drain pipe is fixedly installed in the hole. A first limiting groove is opened on one outer wall of the ultrasonic cleaning box, and a sealing plate is provided inside the first limiting groove.

[0011] In a preferred embodiment of the present invention, the bottom of the ultrasonic cleaning box is provided with four sets of first snap-fit ​​grooves, and the bottom of the movable tray is fixedly installed with four sets of first snap-fit ​​plates. The first snap-fit ​​plates are snap-fitted into the inside of the first snap-fit ​​grooves. The bottom of the movable tray is provided with an opening, and a filter plate is fixedly installed in the opening.

[0012] In a preferred embodiment of the present invention, a first fixing plate is fixedly installed on the top of the ultrasonic cleaning box, a hydraulic cylinder is fixedly installed on the top of the first fixing plate, a hydraulic push rod is provided at the bottom of the first fixing plate, and the output end of the hydraulic cylinder is fixedly connected to one end of the telescopic inner rod of the hydraulic push rod.

[0013] In a preferred embodiment of this utility model, a second fixed plate is provided at the bottom of the first fixed plate, and the other end of the telescopic inner rod of the hydraulic push rod is fixedly connected to the top of the second fixed plate.

[0014] In a preferred embodiment of this utility model, two sets of first fixed circular plates are fixedly installed at the bottom of the second fixed plate. An electric control box is fixedly installed on one outer wall of the first fixed circular plate, and an electric rotating rod is rotatably installed on the other outer wall of the first fixed circular plate. The electric control box and the electric rotating rod are electrically connected.

[0015] In a preferred embodiment of this utility model, a brush roller is fixedly installed on the outer wall of the electric rotating rod, and the outer wall of the brush roller is in close contact with the outer wall of the circuit board body.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. To achieve the purpose of clamping and fixing the circuit board, improve the fixing effect of the circuit board, reduce the impact between the circuit board and the inner wall of the device, increase the service life of the circuit board, reduce the damage to the circuit board, and improve the safety of the device.

[0018] 2. To achieve the purpose of ultrasonic cleaning of circuit boards and to discharge the waste liquid generated by the device, thereby improving the flexibility of the device's use, simplifying the operation steps, and improving the cleaning efficiency of circuit boards.

[0019] 3. To achieve the purpose of cleaning the circuit board, improve the cleaning intensity of the circuit board, facilitate the operation of the device by workers, and optimize the user experience of the device.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the first fixing plate structure of this utility model;

[0024] Figure 3 This is a schematic diagram showing the disassembled first limiting frame plate and circuit board body of this utility model;

[0025] Figure 4 This is a schematic diagram of the first clamping plate structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the movable tray structure of this utility model;

[0027] Figure 6 This is a structural diagram of the internal structure of the ultrasonic cleaning box of this utility model.

[0028] In the diagram: 10. Ultrasonic cleaning box; 11. First electrical control box; 12. Drain pipe; 13. Sealing plate; 14. First limiting groove; 15. First snap-fit ​​groove; 16. Movable tray; 17. First snap-fit ​​plate; 18. Filter plate; 19. First limiting frame plate; 20. First clamping plate; 21. Soft pad plate; 22. Guide rod; 23. Pull rod; 24. Reset spring rod; 25. Circuit board body; 26. First fixing plate; 27. Hydraulic cylinder; 28. Hydraulic push rod; 29. ​​Second fixing plate; 30. First fixing circular plate; 31. Electrical control box; 32. Electric rotating rod; 33. Brush roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0030] Example 1: A printed circuit board cleaning device, specifically as follows Figure 1 , Figure 3 and Figure 4 As shown, the device includes an ultrasonic cleaning chamber 10, which is rectangular and placed on a table. A limiting structure is also included, comprising a first limiting part and a second limiting part. The first limiting part includes a movable tray 16 disposed outside the ultrasonic cleaning chamber 10. Two sets of first limiting frame plates 19 are fixedly installed on the top of the movable tray 16. Two sets of first clamping plates 20 are disposed inside one side of each of the two sets of first limiting frame plates 19. One outer wall of one set of first clamping plates 20 is fixedly connected to one inner wall of one set of first limiting frame plates 19. A soft pad 21 is attached to the inner wall of the circuit board. The second limiting part also includes a guide rod 22 fixedly installed inside the first limiting frame plate 19. A set of first clamping plates 20 has holes inside, and the guide rod 22 is set inside the holes of the set of first clamping plates 20. A pull rod 23 is slidably installed inside the first limiting frame plate 19. A reset spring rod 24 is fixedly installed between the pull rod 23 and the set of first clamping plates 20. A circuit board body 25 is set on the top of the movable tray 16. The outer wall of the circuit board body 25 is in close contact with the inner wall of the guide rod 22. The circuit board is clamped and fixed by the limiting structure. Pulling the pull rod 23 compresses the reset spring rod 24, causing the set of first clamping plates 20 to move on the outer wall of the guide rod 22, placing the circuit board body 25 between the two sets of first clamping plates 20, so that the outer wall of the soft pad 21 is in close contact with the outer wall of the circuit board body 25. Releasing the pull rod 23 pushes the set of first clamping plates 20 to move through the reset spring rod 24, clamping the circuit board body 25.

[0031] Based on the above, the structure of the ultrasonic cleaning box 10, movable tray 16, first limiting frame plate 19, first clamping plate 20, soft pad plate 21, guide rod 22, pull rod 23, reset spring rod 24 and circuit board body 25 achieves the purpose of clamping and fixing the circuit board, improving the fixing effect of the circuit board, reducing the impact between the circuit board and the inner wall of the device, increasing the service life of the circuit board, reducing the damage to the circuit board, and improving the safety of the device.

[0032] Example 2: Based on Example 1, specifically as follows... Figure 1 and Figure 6As shown, a first electrical control box 11 is fixedly installed on one outer wall of the ultrasonic cleaning chamber 10. Wires are installed on one outer wall of the first electrical control box 11, which is connected to an external power supply via these wires. A hole is formed in the outer wall of the ultrasonic cleaning chamber 10, and a drain pipe 12 is fixedly installed inside the hole. A first limiting groove 14 is formed in one outer wall of the ultrasonic cleaning chamber 10, and a sealing plate 13 is installed inside the first limiting groove 14. Power is supplied to the first electrical control box 11 via the external power supply, activating the ultrasonic cleaning chamber 10 to perform ultrasonic cleaning on the circuit board. The sealing plate 13 is fixedly installed inside the first limiting groove 14 with bolts, and waste liquid at the bottom of the ultrasonic cleaning chamber 10 is discharged through the drain pipe 12.

[0033] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, the bottom of the ultrasonic cleaning chamber 10 has four sets of first snap-fit ​​slots 15, and the bottom of the movable tray 16 has four sets of first snap-fit ​​plates 17 fixedly installed. The first snap-fit ​​plates 17 are snapped into the inside of the first snap-fit ​​slots 15. The bottom of the movable tray 16 has an opening, and a filter plate 18 is fixedly installed in the opening. The first snap-fit ​​plates 17 are snapped into the inside of the first snap-fit ​​slots 15, and the waste liquid after cleaning is output to the bottom of the ultrasonic cleaning chamber 10 through the filter plate 18.

[0034] Based on the above, the structure of the ultrasonic cleaning box 10, the first electrical control box 11, the drain pipe 12, the sealing plate 13, the first limiting groove 14, the first snap-fit ​​groove 15, the movable tray 16, the first snap-fit ​​plate 17, and the filter plate 18 achieves the purpose of ultrasonic cleaning of circuit boards and discharges the waste liquid generated by the device, thereby improving the flexibility of the device, simplifying the operation steps of the device, and improving the cleaning efficiency of circuit boards.

[0035] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 and Figure 2 As shown, a first fixing plate 26 is fixedly installed on the top of the ultrasonic cleaning box 10. A hydraulic cylinder 27 is fixedly installed on the top of the first fixing plate 26, and a hydraulic push rod 28 is provided at the bottom of the first fixing plate 26. The output end of the hydraulic cylinder 27 is fixedly connected to one end of the telescopic inner rod of the hydraulic push rod 28. The hydraulic cylinder 27 is fixed by the first fixing plate 26. When the hydraulic cylinder 27 is started, it drives the hydraulic push rod 28 to move.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, a second fixed plate 29 is provided at the bottom of the first fixed plate 26, and the other end of the telescopic inner rod of the hydraulic push rod 28 is fixedly connected to the top of the second fixed plate 29. The position of the second fixed plate 29 is adjusted by the movement of the hydraulic push rod 28.

[0037] Specifically, such as Figure 1 and Figure 2 As shown, two sets of first fixed circular plates 30 are fixedly installed on the bottom of the second fixed plate 29. An electrical control box 31 is fixedly installed on one outer wall of the first fixed circular plate 30, and an electric rotating rod 32 is rotatably installed on the other outer wall of the first fixed circular plate 30. The electrical control box 31 and the electric rotating rod 32 are electrically connected. When the electrical control box 31 is started, it drives the electric rotating rod 32 to rotate inside the first fixed circular plate 30.

[0038] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, a brush roller 33 is fixedly installed on the outer wall of the electric rotating rod 32, and the outer wall of the brush roller 33 is in close contact with the outer wall of the circuit board body 25. When the electric rotating rod 32 rotates, it drives the brush roller 33 to clean the outer wall of the circuit board body 25.

[0039] In summary, the ultrasonic cleaning box 10, the first fixed plate 26, the hydraulic cylinder 27, the hydraulic push rod 28, the second fixed plate 29, the first fixed circular plate 30, the electrical control box 31, the electric rotating rod 32, and the brush roller 33 achieve the purpose of cleaning the circuit board, improve the cleaning intensity of the circuit board, facilitate the operation of the device by the workers, and optimize the user experience of the device.

[0040] Working principle: The limiting structure includes a first limiting part (including a movable tray 16, which has two sets of first limiting frame plates 19 on its top, one inner wall of one set of first limiting frame plates 19 is fixed to a set of first clamping plates 20, and the inner wall of the first clamping plates 20 has a soft pad plate 21; the first limiting frame plate 19 has a guide rod 22 inside, the set of first clamping plates 20 has holes for the guide rod 22 to pass through, the first limiting frame plate 19 has a pull rod 23 inside, and there is a return spring rod 24 between the pull rod 23 and the set of first clamping plates 20) and a second limiting part. Pulling the lever 23 compresses the reset spring lever 24, causing a set of first clamping plates 20 to move on the outer wall of the guide rod 22, placing the circuit board body 25 between the two sets of first clamping plates 20, so that the outer wall of the soft pad 21 is in close contact with the outer wall of the circuit board body 25. Releasing the lever 23 causes the reset spring lever 24 to push the set of first clamping plates 20 to move and clamp the circuit board body 25. The ultrasonic cleaning box 10 has a first electrical control box 11 on one side of its outer wall, which is connected to an external power supply through wires. The external power supply supplies power to the first electrical control box 11, starting the ultrasonic cleaning box 10 to perform ultrasonic cleaning on the circuit board. The ultrasonic cleaning chamber 10 has holes on its outer wall, and a drain pipe 12 is fixed inside the holes to discharge waste liquid from the bottom. One side of the outer wall has a first limiting groove 14, and a sealing plate 13 is fixedly installed inside the first limiting groove 14 by bolts. The bottom of the ultrasonic cleaning chamber 10 has four sets of first snap-fit ​​grooves 15, and the bottom of the movable tray 16 has four sets of first snap-fit ​​plates 17. The first snap-fit ​​plates 17 are snap-fitted into the first snap-fit ​​grooves 15. A filter plate 18 is fixedly installed inside the bottom opening of the movable tray 16, through which the waste liquid after cleaning is output to the bottom of the ultrasonic cleaning chamber 10. The top of the ultrasonic cleaning chamber 10 has a first fixing plate 26, on which a hydraulic cylinder 27 is fixedly installed. A hydraulic push rod 28 is located at the bottom, and the output end of the hydraulic cylinder 27 is fixedly connected to one end of the telescopic inner rod of the hydraulic push rod 28. The hydraulic cylinder 27 is activated to drive the hydraulic push rod 28 to move. The bottom of the first fixed plate 26 has a second fixed plate 29. The other end of the telescopic inner rod of the hydraulic push rod 28 is fixedly connected to the top of the second fixed plate 29. The position of the second fixed plate 29 is adjusted by the movement of the hydraulic push rod 28. The bottom of the second fixed plate 29 has two sets of first fixed circular plates 30. One side of the outer wall has an electrical control box 31, and the other side of the outer wall is rotatably mounted with an electric rotating rod 32. The electrical control box 31 and the electric rotating rod 32 are electrically connected. The electrical control box 31 is activated to drive the electric rotating rod 32 to rotate inside the first fixed circular plate 30. The outer wall of the electric rotating rod 32 has a brush roller 33. The outer wall of the brush roller 33 is in close contact with the outer wall of the circuit board body 25. When the electric rotating rod 32 rotates, it drives the brush roller 33 to clean the outer wall of the circuit board body 25.

[0041] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A printed circuit board cleaning apparatus, characterized by, include: The ultrasonic cleaning box (10) is rectangular and is placed on the table. The limiting structure includes a first limiting part and a second limiting part. The first limiting part includes a movable tray (16) disposed outside the ultrasonic cleaning box (10). Two sets of first limiting frame plates (19) are fixedly installed on the top of the movable tray (16). Two sets of first clamping plates (20) are disposed inside one side of the two sets of first limiting frame plates (19). The outer wall of one side of the first clamping plate (20) is fixedly connected to the inner wall of one side of the first limiting frame plate (19). A soft pad plate (21) is pasted on the inner wall of the first clamping plate (20). The second limiting part includes a movable tray (16) disposed outside the ultrasonic cleaning box (10). It also includes a guide rod (22) fixedly installed inside the first limiting frame plate (19), a set of first clamping plates (20) with holes inside, the guide rod (22) is set inside the holes of the set of first clamping plates (20), a pull rod (23) is slidably installed inside the first limiting frame plate (19), a reset spring rod (24) is fixedly installed between the pull rod (23) and the set of first clamping plates (20), and a circuit board body (25) is provided on the top of the movable tray (16), the outer wall of the circuit board body (25) is in close contact with the inner wall of the guide rod (22).

2. The printed circuit board cleaning apparatus of claim 1, wherein A first electrical control box (11) is fixedly installed on one side of the outer wall of the ultrasonic cleaning box (10). A wire is provided on one side of the outer wall of the first electrical control box (11). The first electrical control box (11) is connected to an external power supply through the wire. A hole is opened on the outer wall of the ultrasonic cleaning box (10). A drain pipe (12) is fixedly installed in the hole. A first limiting groove (14) is opened on one side of the outer wall of the ultrasonic cleaning box (10). A sealing plate (13) is provided inside the first limiting groove (14).

3. The printed circuit board cleaning apparatus of claim 1, wherein, The bottom of the ultrasonic cleaning box (10) is provided with four sets of first snap-fit ​​grooves (15), and the bottom of the movable tray (16) is fixedly installed with four sets of first snap-fit ​​plates (17). The first snap-fit ​​plates (17) are snap-fitted into the inside of the first snap-fit ​​grooves (15). The bottom of the movable tray (16) is provided with an opening, and a filter plate (18) is fixedly installed in the opening.

4. The printed circuit board cleaning apparatus of claim 1, wherein The top of the ultrasonic cleaning box (10) is fixedly installed with a first fixing plate (26), the top of the first fixing plate (26) is fixedly installed with a hydraulic cylinder (27), the bottom of the first fixing plate (26) is provided with a hydraulic push rod (28), and the output end of the hydraulic cylinder (27) is fixedly connected to one end of the telescopic inner rod of the hydraulic push rod (28).

5. The printed circuit board cleaning apparatus of claim 4, wherein, A second fixed plate (29) is provided at the bottom of the first fixed plate (26), and the other end of the telescopic inner rod of the hydraulic push rod (28) is fixedly connected to the top of the second fixed plate (29).

6. The printed circuit board cleaning apparatus of claim 5, wherein, Two sets of first fixed circular plates (30) are fixedly installed at the bottom of the second fixed plate (29). An electric control box (31) is fixedly installed on one side of the outer wall of the first fixed circular plate (30), and an electric rotating rod (32) is rotatably installed on the other side of the outer wall of the first fixed circular plate (30). The electric control box (31) and the electric rotating rod (32) are electrically connected.

7. The printed circuit board cleaning equipment according to claim 6, characterized in that, A brush roller (33) is fixedly installed on the outer wall of the electric rotating rod (32), and the outer wall of the brush roller (33) is in close contact with the outer wall of the circuit board body (25).

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