Low-oxygen PCB board rinsing device

Abstract

The utility model discloses a low oxygen PCB board rinsing device belongs to PCB board rinsing technical field, including operation platform and shower nozzle, and the shower nozzle can be installed in operation platform of horizontal removal, still include sliding block, straight gear, frame body, rack, drive assembly and turnover subassembly, and sliding block and frame body can be installed in operation platform of horizontal removal, and the top fixed connection of shower nozzle has the male shaft, and the male shaft passes through the inner wall of sliding block and is connected with its rotation, and the straight gear is connected with male shaft coaxially, and frame body one side is fixedly connected with rack, and rack and straight gear are interlocked, this low oxygen PCB board rinsing device, through the linkage effect between frame body and sliding block, can first rotate to tilt and aim circuit board while driving shower nozzle removal, and then through the reciprocating double -sided drying of shower nozzle and turnover subassembly is realized, has solved the inconvenient adjustment of drying wind direction of most of the low oxygen PCB board rinsing device of current situation, has led to the situation of increasing chemical residual risk, and has reduced the rinsing quality.

Description

Technical Field

[0001] This utility model relates to the field of PCB board rinsing technology, specifically to a low-oxygen PCB board rinsing device. Background Technology

[0002] PCB is short for Printed Circuit Board. It is the "skeleton" and "nerve center" of electronic devices. By printing conductive copper foil lines, pads and vias on an insulating substrate (such as fiberglass epoxy resin board, flexible materials, etc.), it realizes the mechanical fixation and electrical connection of electronic components. It is the core basic component of almost all electronic devices.

[0003] The manufacturing process of PCB boards (such as etching, copper plating, copper immersion, and solder mask printing) uses a large number of chemical agents. The core purpose of rinsing is to thoroughly remove residual chemicals from the board surface to avoid quality problems in subsequent processes or product use. In order to prevent oxidation reactions of the traces (mainly copper) on the PCB board when they come into contact with water and oxygen during the rinsing process, low-oxygen rinsing technology has been developed. This technology uses low-oxygen water for rinsing and inert gas for hot air drying.

[0004] For example, comparing a PCB copper plating cleaning device (Chinese Patent Publication No. CN220896914U) and a rinsing mechanism for processing rigid PCB circuit boards (Chinese Patent Publication No. CN211019463U), both solutions achieve multi-piece clamping and integrated cleaning, rinsing, and drying, thus improving rinsing efficiency. However, like most existing low-oxygen PCB rinsing devices, they suffer from a significant drawback: the drying airflow direction is difficult to adjust, causing the residual liquid on the PCB board to flow unstably during the drying process, increasing the risk of chemical residue and reducing rinsing quality. Utility Model Content

[0005] The purpose of this invention is to provide a low-oxygen PCB board rinsing device that can adjust the drying air direction so that the residual liquid flows to the outer edge of the PCB board, thereby improving the rinsing quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A low-oxygen PCB board rinsing device is provided, including an operating table and a nozzle. The nozzle is horizontally movable and mounted on the operating table. The device also includes a slider, a spur gear, a frame, a rack, a drive assembly, and a flipping assembly. Both the slider and the frame are horizontally movable and mounted on the operating table. A convex shaft is fixedly connected to the top of the nozzle, passing through the inner wall of the slider and rotatably connected to it. The spur gear is coaxially connected to the convex shaft. One side of the frame is fixedly connected to the rack, and the rack meshes with the spur gear. The drive assembly and the flipping assembly are both mounted on the operating table. The drive assembly is used to drive the nozzle to rotate and translate, and the flipping assembly is used to fix and flip the PCB board.

[0008] Furthermore, the drive assembly includes a slide rod, a screw, a first motor, and a limiting rod. The slide rod passes through the frame and is slidably connected to it. The screw passes through the slider and is threadedly connected to it. The output shaft of the first motor is coaxially connected to the screw. The limiting rod has a U-shaped structure and is located around the slider. The inner wall of one end of the limiting rod abuts against the slider.

[0009] Furthermore, both the number of sliders and the number of convex shafts are a pair, with the two convex shafts located on both sides of the nozzle. The drive assembly also includes a pair of guide rods that pass through the sliders and are slidably connected to them.

[0010] Furthermore, the flipping assembly includes a support bar, a pair of flipping frames, a pair of rotating shafts, a pair of drive gears, and a second motor. The support bar is mounted on the operating table. The two flipping frames are symmetrically arranged on both sides of the support bar and hinged to it. The flipping frames are used to support the circuit board. The rotating shafts pass through the flipping frames and are fixedly connected to them. The rotating shafts also pass through the support bars and are rotatably connected to them. The drive gears are coaxially connected to the rotating shafts, and the two drive gears mesh with each other. The second motor is fixedly connected to the support bar, and the output shaft of the second motor is coaxially connected to one of the rotating shafts.

[0011] Furthermore, the flipping assembly also includes a top plate, a torsion spring, and a pressure block. The pressure block is fixedly connected to the top of one of the flipping frames, and the inner wall of the other flipping frame has a slot. The top plate has an L-shaped structure and is rotatably connected to the inner wall of the slot. The torsion spring is sleeved around the rotating shaft on the top plate, and both ends of the torsion spring are fixedly connected to the inner wall of the slot and the top plate, respectively.

[0012] Furthermore, multiple limiting blocks are symmetrically arranged at the top of the flip frame, and the limiting blocks are in contact with the outer periphery of the circuit board.

[0013] Furthermore, a canopy is fixedly connected to the top of the operating table, and the guide rod and slide rod are both fixedly connected to the inner wall of the canopy. The screw passes through the canopy and is rotatably connected to it. The first motor is fixedly connected to one side of the canopy, and a baffle is slidably connected to one side of the canopy. A liquid collection tank is fixedly connected to the inner wall of the operating table. The liquid collection tank is located at the bottom of the flip frame, and the support bar is fixedly connected to the inner wall of the liquid collection tank.

[0014] The beneficial effects of this utility model are as follows: By using a slider, frame, and flipping assembly, this utility model first cleans the chemical agents with low-oxygen water when rinsing the circuit board. Then, the circuit board is placed in the flipping frame of the flipping assembly. The drive assembly moves the frame horizontally. Initially, the rack and spur gear mesh to drive the cam shaft to rotate, causing the nozzle to tilt and align with the circuit board. As the frame continues to move, the slider moves synchronously, and the nozzle sprays inert gas onto the circuit board, causing the residual liquid to quickly slide off and evaporate. The drive assembly then reverses its operation, and the nozzle reverses its direction to dry the circuit board a second time. The circuit board is then flipped by the flipping assembly, and the process is repeated to achieve double-sided drying. This adjusts the airflow direction, dries quickly, prevents oxidation, and improves the rinsing quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0018] Figure 3 This is an exploded view of the ceiling structure of this utility model;

[0019] Figure 4 This is an exploded view of the drive component structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the flipping component structure of this utility model;

[0021] Figure 6 This is a cross-sectional view of the flip frame structure of this utility model.

[0022] In the picture:

[0023] 1. Control panel; 10. Nozzle; 100. Cam shaft; 11. Slider; 12. Spur gear; 13. Frame; 14. Rack; 15. Circuit board; 16. Canopy; 17. Baffle; 18. Liquid collection tank;

[0024] 2. Drive assembly; 20. Slide rod; 21. Screw; 22. First motor; 23. Limiting rod; 24. Guide rod;

[0025] 3. Flipping assembly; 30. Support bar; 31. Flipping frame; 310. Empty slot; 311. Limiting block; 32. Rotating shaft; 33. Drive gear; 34. Second motor; 35. Top plate; 36. Torsion spring; 37. Pressure block. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] Reference Figures 1 to 6 The low-oxygen PCB board rinsing device shown includes an operating table 1 and a nozzle 10. The nozzle 10 is horizontally movable and mounted on the operating table 1. It also includes a slider 11, a spur gear 12, a frame 13, a rack 14, a drive assembly 2, and a flipping assembly 3. The slider 11 and the frame 13 are both horizontally movable and mounted on the operating table 1. A convex shaft 100 is fixedly connected to the top of the nozzle 10. The convex shaft 100 passes through the inner wall of the slider 11 and is rotatably connected to it. The spur gear 12 is coaxially connected to the convex shaft 100. One side of the frame 13 is fixedly connected to the rack 14. The rack 14 and the spur gear 12 mesh with each other. The drive assembly 2 and the flipping assembly 3 are both mounted on the operating table 1. The drive assembly 2 is used to drive the nozzle 10 to rotate and translate. The flipping assembly 3 is used to fix and flip the circuit board 15.

[0029] When rinsing the circuit board 15, the chemical agents on the circuit board 15 are first cleaned with low-oxygen water. Then, the circuit board 15 is placed in the flipping frame 31 of the flipping assembly 3. Subsequently, the drive assembly 2 drives the frame 13 to move horizontally. In the initial stage of the frame 13 movement, the meshing transmission between the rack 14 and the spur gear 12 drives the cam shaft 100 to rotate at a certain angle at the bottom of the slider 11, so that the nozzle 10 tilts and points towards the circuit board 15. Then, as the frame 13 continues to move, the slider 11 is moved horizontally in sync, and the nozzle 10 sprays inert gas onto the circuit board 15, causing the residual liquid on the circuit board 15 to quickly slide to one end and evaporate. Then, the drive assembly 2 is reversed, causing the nozzle 10 to turn around and move in the opposite direction for secondary drying. The flipping assembly 3 flips the circuit board 15 and repeats the above operation to dry the circuit board 15 on both sides. This allows for adjustment of the drying air direction, rapid drying of the circuit board 15, prevention of oxidation, and improvement of rinsing quality.

[0030] like Figures 2 to 4As shown, the drive assembly 2 includes a slide rod 20, a screw 21, a first motor 22, and a limiting rod 23. The slide rod 20 passes through the frame 13 and is slidably connected to it. The screw 21 passes through the slider 11 and is threadedly connected to it. The output shaft of the first motor 22 is coaxially connected to the screw 21. The limiting rod 23 has a U-shaped structure and is located on the periphery of the slider 11. The inner wall of one end of the limiting rod 23 abuts against the slider 11.

[0031] The number of sliders 11 and the number of convex shafts 100 are both a pair. The two convex shafts 100 are located on both sides of the nozzle 10. The drive assembly 2 also includes a pair of guide rods 24, which pass through the sliders 11 and are slidably connected to them.

[0032] Supported by a pair of guide rods 24, the slider 11 drives the nozzle 10 to slide horizontally in a stable manner, enabling the first motor 22 to work. Its output shaft drives the screw 21 to rotate. Then, through the threaded transmission between the screw 21 and the frame 13, the frame 13 is driven to slide horizontally along the slide bar 20, thereby driving the rack 14 to move and driving the nozzle 10 to rotate. When the rack 14 moves to one end of the spur gear 12, the inner wall of the limiting rod 23 abuts against the slider 11. As the frame 13 continues to move, the limiting rod 23 pushes the slider 11 to slide, achieving synchronous driving.

[0033] like Figures 3 to 6 As shown, the flipping assembly 3 includes a support bar 30, a pair of flipping frames 31, a pair of rotating shafts 32, a pair of drive gears 33, and a second motor 34. The support bar 30 is mounted on the operating table 1. The two flipping frames 31 are symmetrically arranged on both sides of the support bar 30 and hinged to it. The flipping frames 31 are used to support the circuit board 15. The rotating shafts 32 pass through the flipping frames 31 and are fixedly connected to them. The rotating shafts 32 pass through the support bar 30 and are rotatably connected to it. The drive gears 33 are coaxially connected to the rotating shafts 32. The two drive gears 33 mesh with each other. The second motor 34 is fixedly connected to the support bar 30. The output shaft of the second motor 34 is coaxially connected to one of the rotating shafts 32.

[0034] The flipping assembly 3 also includes a top plate 35, a torsion spring 36, and a pressure block 37. The pressure block 37 is fixedly connected to the top of one of the flipping frames 31. The inner wall of the other flipping frame 31 has a slot 310. The top plate 35 has an L-shaped structure and is rotatably connected to the inner wall of the slot 310. The torsion spring 36 is sleeved on the outer periphery of the rotating shaft on the top plate 35. The two ends of the torsion spring 36 are fixedly connected to the inner wall of the slot 310 and the top plate 35, respectively.

[0035] Multiple limiting blocks 311 are symmetrically arranged on the top of the flip frame 31, and the limiting blocks 311 are in contact with the periphery of the circuit board 15.

[0036] The circuit board 15 is placed between the limiting blocks 311, which provide quick positioning and prevent slippage. This enables the second motor 34 to operate, and its output shaft drives one of the drive gears 33 to rotate. Through the meshing transmission between the two drive gears 33, the two rotating shafts 32 are driven to rotate simultaneously in opposite directions, causing the two flip frames 31 to fold upwards and fit together. At the same time, the pressure block 37 on one of the flip frames 31 presses one end of the top plate 35, causing it to rotate in the slot 310, and the torsion spring 36 is twisted. The other end of the top plate 35 pushes the circuit board 15 to move into the other flip frame 31. Then, the motor drives the flip frame 31 to rotate and reset, and the torsion spring 36 rebounds and pushes the top plate 35 to rotate and reset, thus completing the flipping of the circuit board 15.

[0037] like Figures 1 to 3 As shown, a canopy 16 is fixedly connected to the top of the operating table 1. The guide rod 24 and the slide rod 20 are both fixedly connected to the inner wall of the canopy 16. The screw 21 passes through the canopy 16 and is rotatably connected to it. The first motor 22 is fixedly connected to one side of the canopy 16. A baffle 17 is slidably connected to one side of the canopy 16. A liquid collection tank 18 is fixedly connected to the inner wall of the operating table 1. The liquid collection tank 18 is located at the bottom of the flip frame 31. The support bar 30 is fixedly connected to the inner wall of the liquid collection tank 18.

[0038] The canopy 16 provides support, the liquid collection tank 18 collects excess water, and lifting the baffle 17 makes it easy to pick up and put in the circuit board 15. Releasing the baffle 17 and letting it fall naturally can prevent liquid from splashing out during the drying process.

[0039] Working principle:

[0040] During the rinsing of circuit board 15, the chemicals on circuit board 15 are first cleaned with low-oxygen water. Then, circuit board 15 is placed in the flip frame 31 of the flip assembly 3. Subsequently, the drive assembly 2 drives the frame 13 to move horizontally. In the initial stage of the frame 13's movement, the meshing transmission between rack 14 and spur gear 12 drives the cam shaft 100 to rotate at a certain angle at the bottom of slider 11, causing the nozzle 10 to tilt and point towards circuit board 15. When rack 14 moves to one end of spur gear 12, the inner wall of limit rod 23 is in contact with slider 11. The components collide with each other, and as the frame 13 continues to move, it synchronously drives the slider 11 to move horizontally. At the same time, the nozzle 10 sprays inert gas onto the circuit board 15, causing the residual liquid on the circuit board 15 to quickly slide to one end and evaporate. Then, the drive component 2 reverses its operation, causing the nozzle 10 to turn around and move in the opposite direction for secondary drying. Then, the flipping component 3 flips the circuit board 15 and repeats the above operation to dry the circuit board 15 on both sides. This allows for adjustment of the drying air direction, rapid drying of the circuit board 15, prevention of oxidation, and improvement of rinsing quality.

[0041] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A low-oxygen PCB board rinsing device, comprising an operating table (1) and a nozzle (10), wherein the nozzle (10) is horizontally movable and mounted on the operating table (1), characterized in that, It also includes a slider (11), a spur gear (12), a frame (13), a rack (14), a drive assembly (2), and a flip assembly (3). The slider (11) and the frame (13) are both horizontally movable and installed on the operating table (1). A convex shaft (100) is fixedly connected to the top of the nozzle (10). The convex shaft (100) passes through the inner wall of the slider (11) and is rotatably connected to it. The spur gear (12) is coaxially connected to the convex shaft (100). One side of the frame (13) is fixedly connected to the rack (14). The rack (14) meshes with the spur gear (12). The drive assembly (2) and the flip assembly (3) are both installed on the operating table (1). The drive assembly (2) is used to drive the nozzle (10) to rotate and translate. The flip assembly (3) is used to fix and flip the circuit board (15).

2. The low-oxygen PCB board rinsing device according to claim 1, characterized in that, The drive assembly (2) includes a slide rod (20), a screw rod (21), a first motor (22), and a limiting rod (23). The slide rod (20) passes through the frame (13) and is slidably connected to it. The screw rod (21) passes through the slider (11) and is threadedly connected to it. The output shaft of the first motor (22) is coaxially connected to the screw rod (21). The limiting rod (23) has a U-shaped structure and is located around the slider (11). The inner wall of one end of the limiting rod (23) abuts against the slider (11).

3. The low-oxygen PCB board rinsing device according to claim 2, characterized in that, The number of sliders (11) and the number of convex shafts (100) are both a pair. The two convex shafts (100) are located on both sides of the nozzle (10). The drive assembly (2) also includes a pair of guide rods (24), which pass through the sliders (11) and are slidably connected to them.

4. The low-oxygen PCB board rinsing device according to claim 3, characterized in that, The flipping assembly (3) includes a support bar (30), a pair of flipping frames (31), a pair of rotating shafts (32), a pair of drive gears (33), and a second motor (34). The support bar (30) is installed on the operating table (1). The two flipping frames (31) are symmetrically arranged on both sides of the support bar (30) and hinged to it. The flipping frames (31) are used to support the circuit board (15). The rotating shafts (32) pass through the flipping frames (31) and are fixedly connected to them. The rotating shafts (32) pass through the support bar (30) and are rotatably connected to it. The drive gears (33) are coaxially connected to the rotating shafts (32). The two drive gears (33) mesh with each other. The second motor (34) is fixedly connected to the support bar (30). The output shaft of the second motor (34) is coaxially connected to one of the rotating shafts (32).

5. A low-oxygen PCB board rinsing device according to claim 4, characterized in that, The flipping assembly (3) also includes a top plate (35), a torsion spring (36) and a pressure block (37). The pressure block (37) is fixedly connected to the top of one of the flipping frames (31). The inner wall of the other flipping frame (31) has a slot (310). The top plate (35) has an L-shaped structure and is rotatably connected to the inner wall of the slot (310). The torsion spring (36) is sleeved on the outer periphery of the rotating shaft on the top plate (35). The two ends of the torsion spring (36) are fixedly connected to the inner wall of the slot (310) and the top plate (35) respectively.

6. The low-oxygen PCB board rinsing device according to claim 4, characterized in that, Multiple limiting blocks (311) are symmetrically arranged on the top of the flip frame (31), and the limiting blocks (311) are in contact with the periphery of the circuit board (15).

7. A low-oxygen PCB board rinsing device according to claim 4, characterized in that, The top of the operating table (1) is fixedly connected to a canopy (16). The guide rod (24) and the slide rod (20) are both fixedly connected to the inner wall of the canopy (16). The screw (21) passes through the canopy (16) and is rotatably connected to it. The first motor (22) is fixedly connected to one side of the canopy (16). A baffle (17) is slidably connected to one side of the canopy (16). A liquid collection tank (18) is fixedly connected to the inner wall of the operating table (1). The liquid collection tank (18) is located at the bottom of the flip frame (31). The support bar (30) is fixedly connected to the inner wall of the liquid collection tank (18).

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