PCB surface automatic tin brushing device

Abstract

The utility model belongs to a kind of PCB board surface automatic tin brushing device, including base, base is provided with operating board, PCB board is placed below operating board, operating board is opened with positioning mouth, and positioning mouth is provided with tin brushing plate, and tin brushing plate is opened with several tin brushing mouths;The upper portion of operating board is provided with tin brushing mechanism, and tin brushing mechanism includes movable stage, movable stage is driven by drive unit, and reciprocating motion is made along the length direction of tin brushing plate, drive unit is installed on base, and the lower portion of movable stage is provided with first brush head assembly and second brush head assembly, first brush head assembly and second brush head assembly are connected with the output end of each cylinder respectively, and each cylinder is arranged in movable stage, and box door is arranged in movable stage.The utility model reduces manual intervention link, avoids the delay of conveying caused by manual operation error, greatly shortens single tin brushing period, improves tin brushing position precision, reduces equipment adaptation cost, reduces equipment downtime maintenance time, and reduces equipment running noise.

Description

Technical Field

[0001] This utility model relates to a soldering device, specifically an automatic soldering device for the surface of a PCB board. Background Technology

[0002] In the electronics manufacturing industry, PCB boards, as key carriers of electronic components, directly affect the stability and lifespan of circuit connections due to the quality of their surface solder coating. Existing soldering technologies suffer from several drawbacks. Firstly, traditional soldering equipment often requires manual handling of PCB boards to designated soldering stations, resulting in high labor intensity and potential errors in placement due to human error. Furthermore, manual transport is inefficient and unsuitable for large-scale assembly line production. Secondly, most equipment uses a single brush head structure, requiring a long waiting time for the brush head to return to its initial position after each soldering cycle, leading to significant idle time. This problem is particularly pronounced when processing multiple batches of high-volume PCB boards, failing to meet the demands of efficient production. Thirdly, some equipment uses a sliding friction structure to transport PCB boards, or the soldering plate directly contacts the operating board rigidly. Over time, this friction can cause wear on the transport components, scratches on the PCB surface, and significant operating noise, increasing maintenance frequency and costs. Utility Model Content

[0003] The technical solution adopted by this utility model to solve its technical problem is: the automatic tin-brushing device for PCB board surface of this utility model includes a base, an operation board is provided on the base, the PCB board is placed below the operation board, a positioning port is provided on the operation board, a tin-brushing plate is provided at the positioning port, and a plurality of tin-brushing ports are provided on the tin-brushing plate. A soldering mechanism is provided above the operation panel. The soldering mechanism includes a movable platform. The movable platform is driven by a drive unit and moves back and forth along the length of the soldering plate. The drive unit is mounted on the base. A first brush head assembly and a second brush head assembly are provided below the movable platform. The first brush head assembly and the second brush head assembly are respectively connected to the output end of each cylinder. Each cylinder is located inside the movable platform. A door is provided inside the movable platform.

[0004] Preferably, the base includes a first base body and a second base body, the PCB board is placed between the first base body and the second base body and located directly below the soldering board, and the operation board is connected to both the first base body and the second base body.

[0005] Preferably, the inner sides of the first and second seats are provided with a plurality of guide support wheels, and each of the guide support wheels is connected by a connecting belt. The outer sides of the first and second seats are provided with a power box for driving the rotation of the guide support wheels, and the power box is provided with a power motor. The PCB board is displaced to below the soldering board by the support of each connecting belt.

[0006] Preferably, a boss is provided on the inner side of the positioning port, and the soldering plate is supported by the boss.

[0007] Preferably, the upper end of the tin-brushing plate is flush with the upper end of the operating plate.

[0008] Preferably, the drive unit includes two guide seats, each of which is disposed on the base and located on both sides of the operation plate. The two sides of the movable platform are slidably mounted on each of the guide seats via extension columns. At least one guide seat is provided with a lead screw, which passes through the extension column. The extension column is provided with an internal thread adapted to the lead screw. When the lead screw rotates, it drives the extension column to move along the guide seat, thereby driving the movable platform to move along the length direction of the soldering plate. A drive motor for driving the lead screw to rotate is disposed on the outside of the guide seat.

[0009] Preferably, the first brush head assembly includes a connecting seat, the output end of the cylinder is connected to the upper end of the connecting seat, the lower end of the connecting seat is provided with a scraper positioning frame, and the lower half of the scraper positioning frame is provided with a scraper. The second brush head assembly has the same structure as the first brush head assembly.

[0010] Preferably, the upper end of the connecting seat is provided with two guide rods, each of which is movably inserted into the movable platform.

[0011] Preferably, both ends of the scraper positioning frame are provided with adjustment ports, and each adjustment port is provided with a locking screw for fixing the scraper.

[0012] The advantages of this utility model are: 1. The first and second seats of the base are connected by guide support wheels and connecting belts. Driven by the power box, the PCB board can be automatically transported to the bottom of the soldering board without manual handling and positioning, reducing manual intervention and avoiding transport delays caused by human operation errors. 2. The first brush head assembly and the second brush head assembly are independently controlled by cylinders to lift and lower, and together with the reciprocating motion of the moving table, they can alternately brush solder. After the first brush head completes a single brushing, it can brush solder in the opposite direction without waiting for reset, which greatly shortens the single brushing cycle. 3. The soldering ports on the soldering board correspond one-to-one with the soldering positions on the PCB board. The soldering board is supported by the inner boss of the positioning port, and the upper end is flush with the operation board. This ensures that the solder material is only applied to the target area through the preset soldering ports during the soldering process, avoiding solder overflow and contamination of non-soldering areas of the PCB board, and improving the accuracy of the soldering position. 4. The scraper positioning frame is equipped with adjustment ports and locking screws at both ends, which can adjust the installation position and angle of the scraper according to the PCB board soldering requirements. It can adapt to the soldering requirements of different PCB boards without replacing the entire brush head assembly, reducing equipment adaptation costs. At the same time, the movable table is equipped with a door, which facilitates the inspection and maintenance of internal components such as cylinders and guide rods, reducing equipment downtime for maintenance. 5. The soldering board is independently supported by bosses, avoiding direct rigid contact with the operating panel and reducing wear during long-term use; the guide support wheel and connecting belt work together to transport the PCB board, using rolling friction instead of sliding friction to reduce the wear of the PCB board and the conveying components, while also reducing equipment operating noise. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is another three-dimensional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the control panel.

[0017] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A.

[0018] Figure 5 This is a schematic diagram of the tin-coating board.

[0019] Figure 6 This is a schematic diagram of the tin-brushing mechanism.

[0020] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point B.

[0021] In the diagram: 1. Base; 2. Operation panel; 3. Positioning port; 5. Soldering plate; 6. Soldering port; 7. Soldering mechanism; 8. Movable table; 9. Drive unit; 10. First brush head assembly; 11. Second brush head assembly; 12. Door; 13. First seat; 15. Second seat; 16. Guide support wheel; 17. Connecting belt; 18. Power box; 19. Boss; 20. Guide seat; 21. Extension column; 23. Drive motor; 26. Connecting seat; 27. Scraper positioning frame; 28. Scraper; 29. ​​Guide rod; 30. Adjustment port; 31. Locking screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-7 As shown, an automatic tin-brushing device for a PCB board includes a base 1, an operation board 2 on the base 1, and the PCB board placed below the operation board 2. The operation board 2 has a positioning opening 3, and a tin-brushing plate 5 is provided at the positioning opening 3. The tin-brushing plate 5 has a plurality of tin-brushing openings 6. The tin-brushing plate 5 is made of a high-temperature resistant and wear-resistant alloy material. The inner wall of the tin-brushing openings 6 is provided with a smooth coating to reduce the residue of tin material in the tin-brushing openings 6, and at the same time avoid wear and deformation of the tin-brushing openings 6 due to long-term use, thus extending the service life of the tin-brushing plate 5.

[0024] A soldering mechanism 7 is provided above the operation panel 2. The soldering mechanism 7 includes a movable platform 8, which is driven by a drive unit 9 and moves back and forth along the length of the soldering plate 5. The drive unit 9 is mounted on the base 1. A first brush head assembly 10 and a second brush head assembly 11 are provided below the movable platform 8. The first brush head assembly 10 and the second brush head assembly 11 are respectively connected to the output end of each cylinder. Each cylinder is located inside the movable platform 8, which is equipped with a door 12. A PLC controller is provided inside the movable platform 8. The PLC controller is electrically connected to the power motor, the drive motor 23, and each cylinder. It can preset the soldering speed, the brush head lifting timing, and the PCB board conveying speed parameters to achieve fully automatic operation of the device.

[0025] The base 1 includes a first base 13 and a second base 15. The PCB board is placed between the first base 13 and the second base 15 and is located directly below the soldering board 5. The operation board 2 is connected to both the first base 13 and the second base 15.

[0026] The inner sides of the first seat 13 and the second seat 15 are each provided with a plurality of guide support wheels 16. Each guide support wheel 16 is connected by a connecting belt 17. The outer sides of the first seat 13 and the second seat 15 are provided with a power box 18 for driving the rotation of the guide support wheels 16. The power box 18 is provided with a power motor and a reducer. The PCB board is supported and displaced to below the soldering board 5 by each connecting belt 17. The input end of the reducer is connected to the output shaft of the power motor, and the output end is connected to the rotating shaft of the guide support wheel 16. The reducer is used to adjust the rotation speed of the guide support wheel 16 to control the PCB board conveying speed.

[0027] A boss 19 is provided on the inner side of the positioning port 3, and the tin-brushing plate 5 is supported by the boss 19.

[0028] The upper end of the tin-brushing plate 5 is flush with the upper end of the operating plate 2.

[0029] The drive unit 9 includes two guide seats 20, each of which is disposed on the base 1 and located on both sides of the operation plate 2. The two sides of the movable platform 8 are respectively slidably mounted on each of the guide seats 20 via extension columns 21. At least one guide seat 20 is provided with a lead screw, which passes through the extension column 21. The extension column 21 is provided with an internal thread adapted to the lead screw. When the lead screw rotates, it drives the extension column 21 to move along the guide seat 20, thereby driving the movable platform 8 to move along the length direction of the tin-brushing plate 5. A drive motor 23 for driving the lead screw to rotate is provided on the outside of the guide seat 20.

[0030] The first brush head assembly 10 includes a connecting seat 26, the output end of the cylinder is connected to the upper end of the connecting seat 26, the lower end of the connecting seat 26 is provided with a scraper positioning frame 27, and the lower half of the scraper positioning frame 27 is provided with a scraper 28. The second brush head assembly 11 has the same structure as the first brush head assembly 10.

[0031] The upper end of the connecting seat 26 is provided with two guide rods 29, and each guide rod 29 is movably inserted into the movable platform 8.

[0032] Both ends of the scraper positioning frame 27 are provided with adjustment ports 30, and each adjustment port 30 is provided with a locking screw 31 for fixing the scraper 28.

[0033] Working principle: The power box 18 on the outside of the first seat 13 and the second seat 15 is started. The internal power motor drives the inner guide support wheel 16 to rotate. Through the transmission action of the connecting belt 17, the power is generated to transport the PCB board to be soldered. The PCB board is placed on the connecting belt 17. Under the support and drive of the connecting belt 17, the PCB board is moved along the guide direction of the guide support wheel 16 until it is transported to the bottom of the soldering board 5. The PCB board is then positioned between the first seat 13 and the second seat 15. The soldering plate 5 is supported and installed by the protrusion 19 on the inner side of the positioning port 3 on the operation plate 2, and the upper end of the soldering plate 5 is flush with the upper end of the operation plate 2 to ensure that the soldering surface is flat; at the same time, the soldering ports 6 opened on the soldering plate 5 correspond one-to-one with the soldering position of the PCB board below, so that it can be accurately soldered. The cylinders inside the movable table 8 control the lifting and lowering of the first brush head assembly 10 and the second brush head assembly 11 respectively. Before the initial soldering, the corresponding cylinder is controlled to raise the second brush head assembly 11, with its lower end higher than the lower end of the first brush head assembly 10, ensuring that the first brush head assembly 10 can contact the soldering plate 5 independently for operation. The drive motor 23 on the outside of the guide seat 20 in the drive unit 9 is started, and the drive motor 23 drives the lead screw inside the guide seat 20 to rotate. Since the lead screw passes through the extension columns 21 on both sides of the movable table 8, and the extension columns 21 slide inside the guide seat 20, the rotation of the lead screw is converted into the linear movement of the extension columns 21 along the guide seat 20, thereby driving the movable table 8 to move along the length direction of the soldering plate 5. During the movement of the movable table 8, the first brush head assembly 10 remains in contact with the soldering plate 5 (its scraper 28 is fixed by the scraper positioning frame 27, and the scraper positioning frame 27 is connected to the guide seat 26). (The cylinder output end is connected, and the guide rod 29 at the upper end of the connecting seat 26 can ensure the stability of lifting). The first brush head assembly 10 moves with the movable table 8, scraping the solder on the soldering plate 5 through the soldering port 6 to the corresponding soldering position on the PCB board below, until the movable table 8 moves to the other end of the soldering plate 5, completing the soldering of one PCB board. Then, the cylinder corresponding to the first brush head assembly 10 is controlled to make the first brush head assembly 10 rise. At the same time, the cylinder corresponding to the second brush head assembly 11 is controlled to make the second brush head assembly 11 fall down, with its lower end contacting the soldering plate 5. The PCB board that has been soldered is brought out through the connecting belt 17, and the next PCB board to be soldered is moved to the bottom of the soldering plate 5. The drive motor 23 is started again to make the movable table 8 move in the opposite direction along the length of the soldering plate 5. The second brush head assembly 11 moves with the movable table 8, thus performing the soldering operation again.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic tin-brushing device for PCB board surface, characterized in that: Includes a base (1), an operation board (2) is provided on the base (1), the PCB board is placed below the operation board (2), the operation board (2) has a positioning port (3), a soldering plate (5) is provided at the positioning port (3), and a plurality of soldering ports (6) are provided on the soldering plate (5). A soldering mechanism (7) is provided above the operation panel (2). The soldering mechanism (7) includes a movable platform (8). The movable platform (8) is driven by a drive unit (9) and moves back and forth along the length of the soldering plate (5). The drive unit (9) is installed on the base (1). A first brush head assembly (10) and a second brush head assembly (11) are provided below the movable platform (8). The first brush head assembly (10) and the second brush head assembly (11) are respectively connected to the output end of each cylinder. Each cylinder is located inside the movable platform (8). A door (12) is provided inside the movable platform (8).

2. The automatic tin-brushing device for PCB board surface according to claim 1, characterized in that: The base (1) includes a first base (13) and a second base (15). The PCB board is placed between the first base (13) and the second base (15) and is located directly below the tin-brushing board (5). The operation board (2) is connected to both the first base (13) and the second base (15).

3. The automatic tin-brushing device for PCB board surface according to claim 2, characterized in that: The inner sides of the first seat (13) and the second seat (15) are provided with a number of guide support wheels (16), and each of the guide support wheels (16) is connected by a connecting belt (17). The outer sides of the first seat (13) and the second seat (15) are provided with a power box (18) for driving the guide support wheels (16) to rotate. The power box (18) is provided with a power motor. The PCB board is supported and displaced to below the tin-brushing board (5) by each connecting belt (17).

4. The automatic tin-brushing device for PCB board surface according to claim 3, characterized in that: The positioning port (3) has a boss (19) on its inner side, and the tin-brushing plate (5) is supported by the boss (19).

5. The automatic tin-brushing device for PCB board surface according to claim 4, characterized in that: The upper end of the tin-brushing plate (5) is flush with the upper end of the operating plate (2).

6. The automatic tin-brushing device for PCB board surface according to claim 5, characterized in that: The drive unit (9) includes two guide seats (20), each guide seat (20) is disposed on the base (1) and located on both sides of the operation plate (2). The two sides of the movable platform (8) are slidably disposed on each guide seat (20) via each extension column (21). At least one guide seat (20) is provided with a lead screw, which passes through the extension column (21). The extension column (21) is provided with an internal thread adapted to the lead screw. When the lead screw rotates, it drives the extension column (21) to move along the guide seat (20), thereby driving the movable platform (8) to move along the length direction of the tin-brushing plate (5). A drive motor (23) for driving the lead screw to rotate is provided on the outside of the guide seat (20).

7. The automatic tin-brushing device for PCB board surface according to claim 6, characterized in that: The first brush head assembly (10) includes a connecting seat (26), the output end of the cylinder is connected to the upper end of the connecting seat (26), the lower end of the connecting seat (26) is provided with a scraper positioning frame (27), the lower half of the scraper positioning frame (27) is provided with a scraper (28), and the second brush head assembly (11) has the same structure as the first brush head assembly (10).

8. The automatic tin-brushing device for PCB board surface according to claim 7, characterized in that: Two guide rods (29) are provided at the upper end of the connecting seat (26), and each guide rod (29) is movably inserted into the movable platform (8).

9. The automatic tin-brushing device for PCB board surface according to claim 8, characterized in that: Both ends of the scraper positioning frame (27) are provided with adjustment ports (30), and each adjustment port (30) is provided with a locking screw (31) for fixing the scraper (28).

Images