A circuit board surface processing apparatus

Abstract

The utility model discloses a kind of circuit board surface treatment devices, including workbench and fixedly installed two vertical stands of left-right symmetry on the top of workbench, the outside of two vertical stands is provided with conveying assembly, the top of workbench is provided with cleaning pool, the top of workbench is provided with cleaning assembly located at the rear of cleaning pool. This kind of circuit board surface treatment device, by the movable drive belt drive clamping mechanism and its inboard fixed circuit board moves along the movable direction of drive belt, by clamping mechanism drive circuit board from front to cleaning pool direction moves to the top of cleaning pool when clamping mechanism sinks in the bottom of guide mechanism and is immersed in the cleaning fluid in cleaning pool and resets after passing through guide mechanism, cooperate the cleaning assembly of cleaning after soaking detergent to circuit board and carry out roll brush cleaning, overall structure is simple to reduce initial investment and reduce use energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of electronic manufacturing and assembly technology, specifically to a circuit board surface treatment device. Background Technology

[0002] Circuit boards are the core carriers in electronic devices used to support and connect electronic components. They achieve electrical interconnection through conductive lines on an insulating substrate, acting as the "connection hub" of electronic equipment. Circuit boards connect components such as resistors, capacitors, and integrated circuits via metal wires, ensuring stable transmission of current and signals. Their quality directly affects the stability, lifespan, and overall competitiveness of the equipment. Circuit boards require surface cleaning before and after soldering to remove contaminants such as dust, fibers, metal shavings, flux residue, and ionic contaminants. Current technologies typically use water-based cleaning solutions containing saponifiers and surfactants, which are then cleaned using high-pressure jetting, ultrasonic cleaning, and other methods. This is followed by deionized water and hot air drying. This process requires a complete water treatment system, wastewater treatment system, and drying system, which takes up a large area and has a high initial investment. Furthermore, the energy consumption for heating the cleaning solution and hot air drying is relatively high. Utility Model Content

[0003] The purpose of this utility model is to provide a circuit board surface treatment device to solve the problems in the above-mentioned background technology, which require a complete water treatment system, wastewater treatment system and drying system, occupy a large area and have high initial investment, and have high energy consumption for heating cleaning liquid and hot air drying.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a circuit board surface treatment device, comprising a workbench and two uprights symmetrically mounted on the top of the workbench. A conveying assembly is disposed on the outside of the two uprights. A cleaning tank is disposed on the top of the workbench, and a cleaning assembly is disposed on the top of the workbench behind the cleaning tank. The conveying assembly includes two rotating shafts symmetrically mounted between the two uprights. Symmetrical transmission wheels are fixedly mounted on the outside of each of the two rotating shafts. Two symmetrical transmission belts are disposed on the outside of each of the transmission wheels. Multiple opposing clamping mechanisms are equidistantly fixedly mounted on the outside of each of the two transmission belts along their length. The circuit board is clamped between the opposing clamping mechanisms. The cleaning tank is disposed below the clamping mechanisms. A guide mechanism symmetrically arranged on the left and right sides of the cleaning tank is fixedly mounted on the top of the workbench.

[0005] Preferably, the clamping mechanism includes a mounting frame fixedly connected to the outside of the transmission belt, a vertically arranged slide rod slidably connected inside the mounting frame, a horizontally arranged rotating block rotatably connected to the top of the slide rod, two sleeve rods fixedly connected to the side of the rotating block away from the mounting frame, a spring movably mounted on the outside of the slide rod, a spring movably mounted inside each of the two sleeve rods, and a clamping block fixedly mounted on the end of each of the two sleeve rods away from the rotating block.

[0006] Preferably, the guiding mechanism includes a connecting rod fixedly installed on the top of the workbench, and an arc-shaped plate located above the cleaning tank is fixedly installed on the outside of the connecting rod. The arc-shaped plate is arranged with the front higher than the back, and the arc-shaped plate corresponds to the sliding rod.

[0007] Preferably, a servo motor is fixedly installed on the left side of the support frame, and meshing bevel gears are fixedly installed on the outside of the output shaft of the servo motor and on one end of one of the rotating shafts near the bevel gear.

[0008] Preferably, the end of the slide bar away from the mounting bracket is provided with a ball head, and the spring is engaged between the mounting bracket and the ball head.

[0009] Preferably, the cleaning assembly includes a bracket fixedly installed on the top of the workbench, a horizontally arranged brush rod rotatably installed inside the bracket, the brush rod being located behind the cleaning tank, and synchronous pulleys fixedly installed at both ends of the brush rod and the rotating shaft located at the rear, with a synchronous belt provided outside the synchronous pulleys.

[0010] Preferably, racks are fixedly installed on the top of both uprights, and a flat gear is fixedly installed on the end of the rotating block away from the clamping block, with the flat gear corresponding to the rack.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The movement of the transmission belt drives the clamping mechanism and the circuit board fixed inside to move along the direction of the transmission belt. When the circuit board moves from the direction of the cleaning tank to the top of the cleaning tank, the clamping mechanism sinks against the bottom of the guide mechanism to immerse the circuit board in the cleaning liquid in the cleaning tank. After passing the guide mechanism, the circuit board is reset. The cleaning component located behind the cleaning tank cleans the circuit board after it has been soaked in the cleaning agent with a roller brush. The overall structure is simple, reducing initial investment and energy consumption. 2. When the circuit board moves to the rear area of ​​the stand with the clamping mechanism, the flat gear will gradually mesh with the rack. During the forward movement of the circuit board, the flat gear will rotate due to the meshing action with the rack, which will drive the circuit board to rotate. The centrifugal force will be used to quickly separate the residual liquid adhering to the surface of the circuit board and the gaps between components, achieving the drying effect. No additional power source is required, which reduces energy consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the structure of the conveying component of this utility model; Figure 3 This is a schematic diagram of the clamping mechanism of this utility model; Figure 4 This is a schematic diagram of the cooperative structure of the guiding mechanism and the clamping mechanism of this utility model; Figure 5 This is a schematic diagram of the cleaning component of this utility model.

[0013] In the diagram: 1. Workbench; 2. Stand; 3. Conveying assembly; 31. Rotating shaft; 32. Transmission wheel; 33. Transmission belt; 34. Clamping mechanism; 341. Mounting bracket; 342. Slide rod; 343. Rotating block; 344. Sleeve rod; 345. Spring 1; 346. Spring 2; 347. Clamping block; 348. Flat gear; 35. Guide mechanism; 351. Connecting rod; 352. Arc plate; 4. Cleaning tank; 36. Servo motor; 37. Bevel gear; 5. Rack; 6. Cleaning assembly; 61. Support; 62. Brush rod; 63. Synchronous pulley; 64. Synchronous belt. Detailed Implementation

[0014] 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 protection scope of the present utility model.

[0015] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: a circuit board surface treatment device, including a workbench 1 and two uprights 2 fixedly installed symmetrically on the top of the workbench 1. A conveying assembly 3 is provided on the outside of the two uprights 2. A cleaning tank 4 is provided on the top of the workbench 1, and a cleaning assembly 6 is provided behind the cleaning tank 4 on the top of the workbench 1. The conveying assembly 3 includes two rotating shafts 31 symmetrically arranged front and rear, rotatably installed between the two uprights 2. Symmetrical transmission wheels 32 are fixedly installed on the outside of each of the two rotating shafts 31. Two symmetrical transmission belts 33 are provided on the outside of the transmission wheels 32. Multiple opposing clamping mechanisms 34 are equidistantly fixedly installed on the outside of each of the two transmission belts 33 along their length direction. The circuit board is clamped between the opposing clamping mechanisms 34. The cleaning tank 4... Located below the clamping mechanism 34, the top of the workbench 1 is fixedly equipped with guide mechanisms 35 symmetrically arranged on the left and right sides of the cleaning tank 4. When the rotating shaft 31 rotates, it drives the transmission wheel 32 to rotate, which in turn drives the transmission belt 33 to rotate synchronously. The movement of the transmission belt 33 drives the clamping mechanism 34 and the circuit board fixed inside it to move along the movement direction of the transmission belt 33. After the circuit board is flipped by the clamping mechanism 34, it moves from the direction of the cleaning tank 4 to the top of the cleaning tank 4. When the clamping mechanism 34 is pressed against the bottom of the guide mechanism 35, it sinks down and immerses the circuit board in the cleaning liquid in the cleaning tank 4. After passing the guide mechanism 35, it resets. In conjunction with the cleaning component 6 located behind the cleaning tank 4, the circuit board soaked in cleaning agent is cleaned by a roller brush. The overall structure is simple, reducing initial investment and reducing energy consumption.

[0016] The clamping mechanism 34 includes a mounting bracket 341 fixedly connected to the outside of the transmission belt 33. A vertically arranged slide rod 342 is slidably connected inside the mounting bracket 341. A horizontally arranged rotating block 343 is rotatably connected to the top of the slide rod 342. Two sleeve rods 344 are fixedly connected to the side of the rotating block 343 away from the mounting bracket 341. A spring 345 is movably installed on the outside of the slide rod 342. A spring 346 is movably installed inside each of the two sleeve rods 344. A clamping block 347 is fixedly installed at the end of the two sleeve rods 344 away from the rotating block 343. A rubber pad is provided on the inner side of the clamping block 347 to increase friction when clamping the circuit board, preventing the circuit board from slipping during movement, and preventing the clamping block 347 from pressing on the surface of the circuit board. If there are any scratches or damage, the two ends of spring 345 abut against the top inner wall of the mounting bracket 341 and the bottom of the rotating block 343, respectively. When the slide rod 342 abuts against the bottom of the guide mechanism 35, the slide rod 342 will slide downward in the mounting bracket 341, and spring 345 will be compressed, thereby driving the circuit board to sink into the cleaning fluid. After the clamping mechanism 34 passes the guide mechanism 35, spring 345 will restore its deformation and push the slide rod 342 upward, so that the circuit board will be removed from the cleaning fluid. Spring 346 is located inside the sleeve rod 344. One end of it is fixedly connected to the rotating block 343, and the other end is connected to the clamping block 347. Through the elastic action of spring 346, the clamping block 347 can adapt to circuit boards of different sizes, improving the stability and versatility of clamping.

[0017] The guiding mechanism 35 includes a connecting rod 351 fixedly installed on the top of the workbench 1. An arc-shaped plate 352 located above the cleaning tank 4 is fixedly installed on the outside of the connecting rod 351. The arc-shaped plate 352 is set with the front higher than the back. The arc-shaped plate 352 corresponds to the slide rod 342. When the slide rod 342 moves to the position of the arc-shaped plate 352 with the clamping mechanism 34, the end of the slide rod 342 will contact the bottom surface of the arc-shaped plate 352. As the clamping mechanism 34 continues to move, the slide rod 342 will gradually slide down along the inclined surface of the arc-shaped plate 352 with the front higher than the back. During this process, the slide rod 342 moves down synchronously in the mounting bracket 341, thereby compressing the spring 345 and driving the circuit board to move smoothly. When the slide bar 342 moves to the lowest position of the arc plate 352 in the cleaning solution immersed in the cleaning tank 4, the circuit board is completely submerged in the cleaning solution, thus achieving cleaning. As the slide bar 342 continues to move and gradually detaches from the arc plate 352, the slide bar 342, which has lost the support of the arc plate 352, moves upward under the elastic restoring force of the spring 345, lifting the circuit board from the cleaning solution and completing the lifting action. The curvature and tilt angle of the arc plate 352 are precisely designed to ensure that the sliding process of the slide bar 342 is smooth and without jamming, thereby ensuring that the circuit board will not shake violently when immersed in and detached from the cleaning solution, further improving the stability and safety of the circuit board cleaning.

[0018] A servo motor 36 is fixedly installed on the left side of the support frame 2. The output shaft of the servo motor 36 and one of the rotating shafts 31 near the bevel gear 37 are both fixedly installed with meshing bevel gears 37. The servo motor 36 can be model ECM-B3M-C20604RS1. Through the rotation of the output shaft of the servo motor 36, the rotating shaft 31 can be driven to rotate synchronously through the meshing transmission of the bevel gear 37, which in turn drives the transmission wheel 32 to rotate and drive the transmission belt 33 to circulate, realizing the function of conveying the clamping mechanism 34 and the circuit board. The servo motor 36 can accurately control the running speed of the transmission belt 33 to ensure the stable movement of the circuit board.

[0019] A ball head is provided at the end of the slide rod 342 away from the mounting bracket 341. Spring 345 is engaged between the mounting bracket 341 and the ball head. The ball head can effectively reduce the friction area when the slide rod 342 contacts the arc plate 352, making the relative sliding between the two smoother. The arc structure of the ball head can adapt to the curvature change of the surface of the arc plate 352, further optimizing the guiding performance of the slide rod 342 during the lifting process, ensuring that the elastic force of spring 345 can act stably on the slide rod 342, avoiding the slide rod 342 from deflection or tilting due to uneven force, thereby ensuring the structural stability and operational reliability of the entire clamping mechanism 34.

[0020] The outer wall of the slide rod 342 is provided with a limiting groove that cooperates with the mounting bracket 341 to prevent the slide rod 342 from rotating. When the slide rod 342 moves up and down along the inner hole of the mounting bracket 341, the limiting groove can form a sliding fit with the pre-set protrusion structure on the inner side of the mounting bracket 341. The circumferential rotational freedom of the slide rod 342 is strictly limited through the fitting relationship between the two, ensuring that the slide rod 342 always maintains the axial movement trajectory.

[0021] The cleaning assembly 6 includes a bracket 61 fixedly mounted on the top of the workbench 1. A horizontally arranged brush rod 62 is rotatably mounted inside the bracket 61. The brush rod 62 is positioned behind the cleaning tank 4. Synchronous pulleys 63 are fixedly mounted on both the left and right ends of the brush rod 62 and the rotating shaft 31 located at the rear. A synchronous belt 64 is provided outside the synchronous pulleys 63. Through the transmission cooperation between the synchronous pulleys 63 and the synchronous belt 64, when the rotating shaft 31 rotates, it drives the brush rod 62 to rotate. The size of the synchronous pulley 63 on the brush rod 62 is smaller than the size of the synchronous pulley 63 on the rotating shaft 31, which increases the transmission ratio and enables the brush rod 62 to rotate rapidly for efficient cleaning. The surface of the brush rod 62... The brush is evenly distributed with soft and elastic bristles. Its length and density are optimized to ensure that it can fully contact the surface of the circuit board after it has been treated in the cleaning tank 4 during rotation. As the circuit board is continuously conveyed forward by the conveying component, the rotating bristles can efficiently clean the water stains, small impurities and cleaning fluid residues on the surface of the circuit board. The elastic deformation capability of the bristles ensures that it can maintain cleaning force when in contact with the circuit board, while avoiding damage to the circuit lines and components on the surface of the circuit board. The horizontal setting of the brush rod 62 allows its cleaning range to cover the entire width of the circuit board. Combined with the uniform movement of the circuit board, it achieves comprehensive and continuous cleaning of the surface of the circuit board.

[0022] Please see Figure 1 and Figure 5 A rack 5 is fixedly installed on the top of each stand 2. A spur gear 348 is fixedly installed on the end of the rotating block 343 away from the clamping block 347. The position of the spur gear 348 corresponds to that of the rack 5. When the circuit board moves to the rear area of ​​the stand 2 with the clamping mechanism 34, the spur gear 348 will gradually mesh with the rack 5. During the forward movement of the circuit board, the spur gear 348 rotates due to the meshing action with the rack 5, which in turn drives the rotating block 343 to rotate synchronously. The rotation of the rotating block 343 will cause the clamping block 347 connected to it through the sleeve rod 344 to rotate, which in turn drives the circuit board to rotate, thus drying the liquid on the circuit board. The residual liquid adhering to the surface of the circuit board and the gaps between components is quickly separated by centrifugal force, achieving the drying effect without the need for an additional power source, thus reducing energy consumption.

[0023] Working principle: By pushing the clamping block 347 towards the sleeve rod 344, the sleeve rod 344 retracts and compresses the second spring 346, thereby locking the left and right sides of the circuit board between the clamping blocks 347 on the left and right sides respectively, thus completing the fixation of the circuit board. The output shaft of the servo motor 36 and the front rotating shaft 31 are driven by a meshing bevel gear 37, which in turn drives the rotating shaft 31 to rotate. The rotating shaft 31 drives the external transmission wheel 32 to rotate. The front and rear transmission wheels 32 are driven by the transmission belt 33 to rotate synchronously. The movement of the transmission belt 33 drives the clamping mechanism 34 and the circuit board inside it to move along the direction of the transmission belt 33. The clamping mechanism 34 drives the circuit board to flip and move it from the direction of the cleaning tank 4. When the mounting frame 341 reaches above the cleaning tank 4, the ball head at the bottom of the slide rod 342 abuts against the bottom of the arc plate 352. The clamping mechanism 34 moves towards the lower part of the arc plate 352 as the transmission belt 33 moves. The slide rod 342 is abutted along the mounting frame 34. The inner sliding spring 345 is pressed downward, which in turn drives the circuit board inside the rotating block 343 and clamping block 347 to descend and immerse it in the cleaning solution in the cleaning tank 4. After the slide rod 342 passes through the arc plate 352, the spring 345 releases its elastic force and pushes the slide rod 342 to spring back to its original position, which drives the clamping block 347 to rise and move out of the cleaning tank 4. The rear rotating shaft 31 and the brush rod 62 are driven by the synchronous pulley 63 and the synchronous belt 64, which drives the brush rod 62 to rotate. The bottom surface of the circuit board moves backward along the transmission belt 33 and passes over the brush rod 62. The rotation of the brush rod 62 cleans the lower surface of the circuit board after it has been soaked in the cleaning agent. The overall structure is simple, reducing initial investment and the use of cleaning solution, while also having low energy consumption. After cleaning, the circuit board rotates and straightens again from the rear as the transmission belt 33 moves. The flat gear 348 at the end of the rotating block 343 contacts and meshes with the rack 5 on the stand 2. As the clamping mechanism 34 moves forward with the transmission belt 33, the flat gear 348 rotates above the rack 5, causing the rotating block 343 to rotate, which in turn drives the circuit board to rotate, thus drying the liquid on the circuit board and reducing the overall energy consumption. The above is the working process of the entire device. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit board surface treatment device, comprising a workbench (1) and two uprights (2) symmetrically mounted on the top of the workbench (1), characterized in that: The two uprights (2) are provided with conveying components (3) on the outside, the top of the workbench (1) is provided with a cleaning tank (4), and the top of the workbench (1) is provided with a cleaning component (6) located behind the cleaning tank (4). The conveying assembly (3) includes two rotating shafts (31) rotatably mounted between two uprights (2) in a front-to-back symmetrical manner. Both rotating shafts (31) are fixedly mounted with left-right symmetrical transmission wheels (32). The transmission wheels (32) are provided with two left-right symmetrical transmission belts (33). Both transmission belts (33) are fixedly mounted with multiple opposing clamping mechanisms (34) at equal intervals along the length direction of the transmission belts (33). The circuit board is clamped between the opposing clamping mechanisms (34). The cleaning tank (4) is located below the clamping mechanism (34). The top of the workbench (1) is fixedly mounted with guide mechanisms (35) symmetrically arranged on the left and right sides of the cleaning tank (4).

2. The circuit board surface treatment apparatus according to claim 1, characterized in that: The clamping mechanism (34) includes a mounting frame (341) fixedly connected to the outside of the transmission belt (33). A vertically arranged slide rod (342) is slidably connected inside the mounting frame (341). A horizontally arranged rotating block (343) is rotatably connected to the top of the slide rod (342). Two sleeve rods (344) are fixedly connected to the side of the rotating block (343) away from the mounting frame (341). A spring (345) is movably installed on the outside of the slide rod (342). A spring (346) is movably installed inside the two sleeve rods (344). A clamping block (347) is fixedly installed at the end of the two sleeve rods (344) away from the rotating block (343).

3. The circuit board surface treatment apparatus according to claim 2, characterized by: The guiding mechanism (35) includes a connecting rod (351) fixedly installed on the top of the workbench (1). An arc plate (352) located above the cleaning pool (4) is fixedly installed on the outside of the connecting rod (351). The arc plate (352) is set with the front higher than the back. The arc plate (352) corresponds to the slide rod (342).

4. The circuit board surface treatment apparatus according to claim 1, characterized in that: A servo motor (36) is fixedly installed on the left side of the stand (2). The output shaft of the servo motor (36) and one of the rotating shafts (31) near the bevel gear (37) are both fixedly installed with meshing bevel gears (37).

5. The circuit board surface treatment apparatus according to claim 2, characterized in that: The slide bar (342) has a ball head at the end away from the mounting bracket (341), and the spring (345) is engaged between the mounting bracket (341) and the ball head.

6. The circuit board surface treatment apparatus according to claim 1, characterized in that: The cleaning assembly (6) includes a bracket (61) fixedly installed on the top of the workbench (1). A horizontally arranged brush rod (62) is rotatably installed inside the bracket (61). The brush rod (62) is located behind the cleaning tank (4). Synchronous pulleys (63) are fixedly installed on both the left and right ends of the brush rod (62) and the rotating shaft (31) located behind it. A synchronous belt (64) is provided on the outside of the synchronous pulley (63).

7. The circuit board surface treatment apparatus according to claim 2, characterized in that: Both of the two uprights (2) are fixedly mounted with racks (5) on their tops. A flat gear (348) is fixedly mounted on one end of the rotating block (343) away from the clamping block (347). The flat gear (348) is positioned opposite to the rack (5).

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