Automatic PCBA surface spraying device
By using a water spray head to pre-clean and adjusting the spray head position in the PCBA surface spraying device, the problem of debris on the surface of PCBA affecting the coating adhesion is solved, efficient coating adhesion and uniform coverage are achieved, and spray quality and production efficiency are improved.
Patent Information
- Application Number
- CN202422443226.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Before spraying the PCBA surface, dust, floss and other debris exist, which affects the adhesion effect of the coating and leads to poor spray quality.
An automated PCBA surface spraying device is designed, and the PCBA surface is pre-cleaned by a water spray jet head to remove impurities such as dust and floss, and the position of the spraying nozzle is adjusted through an adjustment mechanism to ensure uniform coating coverage.
By effectively cleaning the PCBA surface, the adhesion of the coating is improved, the surface is clean, the adverse effects during the spraying process are reduced, and the spraying quality and production efficiency are improved.
Smart Images
Figure CN223027640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printed circuit board processing, in particular to an automatic PCBA surface spraying device. Background Art
[0002] With the increasing miniaturization and complexity of electronic products, higher requirements are put forward for the manufacturing process of printed circuit board assembly (PCBA). In order to ensure the performance stability of PCBA and extend its service life, it is usually necessary to carry out coating treatment on its surface to achieve the purposes of moisture-proof, corrosion-proof, anti-static, etc. Before the spraying treatment of PCBA, dust, fluff and other sundries will adhere to its surface. During the spraying treatment process, these dust and fluff will affect the adhesion effect of the coating, resulting in poor spraying effect and poor spraying quality. Summary of the Utility Model
[0003] To solve the above technical problems, the utility model provides an automatic PCBA surface spraying device which can effectively clean the surface of PCBA before spraying, remove sundries such as dust and fluff on the surface, and thus improve the adhesion of the coating.
[0004] The automatic PCBA surface spraying device of the utility model includes a main body bracket, a spraying box, a water and air spraying head, an adjusting bracket and a spraying nozzle. The spraying box is fixedly installed on the main body bracket. A water and air spraying head is arranged in the spraying box, and the water and air spraying head is used for cleaning the surface of the circuit board. Two groups of spraying nozzles are arranged in the spraying box, and the spraying nozzles are used for spraying the surface of the circuit board. The adjusting bracket is fixedly installed on the outer side wall of the spraying box, and an adjusting mechanism is arranged on the adjusting bracket, and the adjusting mechanism is used for adjusting the horizontal positions of the two groups of spraying nozzles.
[0005] The automatic PCBA surface spraying device of the utility model further includes a filter box. The filter box is fixedly installed on the main body bracket. A filter chamber is arranged in the filter box. A communicating pipe is communicated with the spraying box, and the output end of the communicating pipe is communicated with the input end of the filter box. A filter wire mesh plate is arranged in the filter box, and the filter wire mesh plate is arranged on the lower side of the output end of the communicating pipe.
[0006] For the automatic PCBA surface spraying device of the utility model, a liquid discharge port is communicated with the filter box, and a liquid discharge filter cylinder is communicated with the liquid discharge port of the filter box.
[0007] For the automatic PCBA surface spraying device of the utility model, a baffle is arranged on the inner side wall of the filter box, and the baffle is arranged on the upper side of the liquid discharge filter cylinder.
[0008] The automatic PCBA surface spraying device of the present utility model, a fixing block is arranged on the adjusting bracket, and two groups of limit pins are symmetrically arranged on the fixing block, and the limit pins are used to limit the moving path of the spraying nozzle.
[0009] The automatic PCBA surface spraying device of the present utility model, a top cover is swingably arranged on the spraying box, and a ventilation pipe is communicated with the top cover.
[0010] The automatic PCBA surface spraying device of the present utility model, an observation window is arranged on the top cover.
[0011] The automatic PCBA surface spraying device of the present utility model, a lifting handle is arranged on the filtering wire mesh disk.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The water spraying and air jetting head 5 can effectively clean the surface of the PCBA before spraying, remove sundries such as dust and fluff on the surface, thereby improving the adhesion of the coating; By means of water spraying and air jetting, the tiny particles on the surface of the PCBA can be effectively removed, ensuring the surface is clean and reducing the adverse effects during the spraying process; By driving the sliding seat 8 to move in the guide groove 13 through the adjusting cylinder 7, the position of the spraying nozzle 12 is adjusted to adapt to PCBA of different sizes and shapes, ensuring uniform coating; The adjusting mechanism enables the spraying nozzle 12 to be adjusted horizontally according to actual needs, so as to better cover different areas of the PCBA and ensure full coverage of the coating; The spraying box 2 can effectively prevent external dust from entering, and at the same time reduce the paint splashing during the spraying process, reduce environmental pollution, reduce the harm to operators, and help recycle the unadhered paint, saving costs; The device realizes the automation of the spraying process through the adjusting cylinder and other automatic components, reduces the need for manual intervention, and improves production efficiency. Description of the Drawings
[0013] Figure 1 is the structural schematic diagram of the present utility model;
[0014] Figure 2 is the enlarged structural schematic diagram of the spraying box;
[0015] Figure 3 is the enlarged structural schematic diagram of the adjusting mechanism;
[0016] Figure 4 is the internal structural schematic diagram of the filtering box;
[0017] Reference numerals in the drawings: 1, main body bracket; 2, spraying box; 3, workpiece supporting plate; 4, spray head bracket; 5, water spraying and air jetting head; 6, adjusting bracket; 7, adjusting cylinder; 8, sliding seat; 9, clamping block; 10, sliding piece; 11, clamping ring; 12, spraying nozzle; 13, guide groove; 14, filtering box; 15, connecting pipe; 16, filtering wire mesh; 17, liquid discharge filter cartridge; 18, baffle; 19, fixing block; 20, limit pin; 21, top cover; 22, ventilation pipe. Detailed implementation manners
[0018] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0019] As Figures 1 to 4As shown in the figure, the automatic PCBA surface spraying device of the present utility model includes a main body bracket 1, a spraying box 2, a water and air spraying head 5, an adjusting bracket 6, and a spraying nozzle 12. The spraying box 2 is fixedly installed on the main body bracket 1. A water and air spraying head 5 is arranged in the spraying box 2, and the water and air spraying head 5 is used to clean the surface of the circuit board. Two groups of spraying nozzles 12 are arranged in the spraying box 2, and the spraying nozzles 12 are used to perform spraying treatment on the surface of the circuit board. The adjusting bracket 6 is fixedly installed on the outer side wall of the spraying box 2, and an adjusting mechanism is arranged on the adjusting bracket 6. The adjusting mechanism is used to adjust the horizontal position of the two groups of spraying nozzles 12; a spraying cavity is arranged inside the spraying box 2, and a workpiece support plate 3 is arranged inside the spraying box 2. The workpiece support plate 3 is arranged below the spraying nozzle 12. A nozzle support 4 is arranged on the inner side wall of the spraying box 2, and the water and air spraying head 5 is installed on the nozzle support 4. The adjusting mechanism includes two groups of adjusting cylinders 7. The two groups of adjusting cylinders 7 are symmetrically and fixedly installed on the adjusting bracket 6. A clamping block 9 is clamped at the output end of each group of adjusting cylinders 7. The clamping block 9 is fixedly connected with a sliding seat 8. The sliding seat 8 is slidably installed on the adjusting bracket 6. A sliding piece 10 is fixedly installed on the sliding seat 8. A guiding groove 13 is arranged on the spraying box 2, and the sliding piece 10 is slidably arranged in the guiding groove 13. A clamping ring 11 is fixedly installed on the sliding piece 10, and the spraying nozzle 12 is fixedly inserted into the clamping ring 11; the water and air spraying head 5 can effectively clean the surface of the PCBA before spraying, removing sundries such as dust and fluff on the surface, thereby improving the adhesion of the coating; by means of water and air spraying, the tiny particles on the surface of the PCBA can be effectively removed, ensuring the surface is clean and reducing the adverse effects during the spraying process; by driving the sliding seat 8 to move in the guiding groove 13 through the adjusting cylinder 7, the position of the spraying nozzle 12 is adjusted to adapt to PCBA of different sizes and shapes, ensuring uniform coating; the adjusting mechanism enables the spraying nozzle 12 to be adjusted horizontally according to actual needs, so as to better cover different areas of the PCBA and ensure full coverage of the coating; the spraying box 2 can effectively prevent external dust from entering, and at the same time reduce the paint splashing during the spraying process, reducing environmental pollution, reducing the harm to operators, and helping to recover the unadhered paint, saving costs; the device realizes the automation of the spraying process through the adjusting cylinder and other automatic components, reducing the need for manual intervention and improving production efficiency.
[0020] Preferably, as in the above embodiment, a filter box 14 is further included. The filter box 14 is fixedly installed on the main body bracket 1. A filter chamber is provided in the filter box 14. A connecting pipe 15 is communicatively provided on the spraying box 2. The output end of the connecting pipe 15 is communicated with the input end of the filter box 14. A filter wire mesh disk 16 is provided in the filter box 14. The filter wire mesh disk 16 is arranged below the output end of the connecting pipe 15. The filter box 14 filters the wastewater after flushing, which can remove impurities and particulate matters in the water, reducing the content of pollutants discharged into the environment. The filtered wastewater can be recycled, reducing water resource consumption, lowering the usage amount of fresh water, thus saving water resources and related costs. Regularly replacing or cleaning the filter wire mesh disk 16 can keep the equipment in good operating condition and reduce maintenance costs.
[0021] Preferably, as in the above embodiment, a liquid discharge port is communicatively provided on the filter box 14. A liquid discharge filter cartridge 17 is communicatively provided on the liquid discharge port of the filter box 14. The liquid discharge filter cartridge 17 further finely filters the wastewater that has been preliminarily filtered to ensure that impurities in the wastewater are completely removed. The wastewater treated by the filter box 14 and the liquid discharge filter cartridge 17 can reduce the content of pollutants discharged into the environment. The filtered wastewater is closer to the environmental protection discharge standard, reducing the impact on the environment. The filtered wastewater can be recycled, reducing water resource consumption.
[0022] Preferably, as in the above embodiment, a baffle 18 is provided on the inner side wall of the filter box 14. The baffle 18 is arranged above the liquid discharge filter cartridge 17. The presence of the baffle 18 can change the flow direction of the wastewater, making the flow path of the wastewater inside the filter box 14 longer and increasing the contact time between the wastewater and the liquid discharge filter cartridge 17. The residence time of the wastewater in the filter box 14 increases, which helps to more thoroughly remove impurities and particulate matters therein. The baffle 18 can prevent the wastewater from directly impacting the liquid discharge filter cartridge 17, preventing larger particulate matters from directly depositing on the liquid discharge filter cartridge 17, thereby reducing the risk of blockage of the liquid discharge filter cartridge 17. The maintenance frequency of the liquid discharge filter cartridge 17 is reduced, and its service life is extended. The presence of the baffle 18 reduces operation failures caused by blockage of the liquid discharge filter cartridge 17, improving the safety of the production process.
[0023] Preferably, as in the above embodiment, a fixing block 19 is provided on the adjusting bracket 6, and two groups of limit pins 20 are symmetrically arranged on the fixing block 19. The limit pins 20 are used to limit the movement path of the spraying nozzle 12. The limit pins 20 can ensure that the spraying nozzle 12 moves along a predetermined trajectory and prevent it from deviating from the set path. An accurate spraying path helps to improve the uniformity and consistency of the coating, thereby improving the spraying quality. The limit pins 20 can ensure that the spraying nozzle 12 only moves within the area to be sprayed, reducing the ineffective actions during the spraying process and improving the spraying efficiency. By precisely controlling the spraying path, the moving distance of the spraying nozzle 12 can be reduced, thereby shortening the spraying time. The presence of the limit pins 20 reduces the risk of collision between the spraying nozzle 12 and other components, reducing the maintenance cost of the equipment. Reducing collisions and excessive movement helps to extend the service life of the spraying nozzle 12 and other related components. The limit pins 20 can reduce the operating failures caused by the deviation of the spraying nozzle 12 from the path and improve the safety of the production process.
[0024] Preferably, as in the above embodiment, a top cover 21 is swingably provided on the spraying box 2, and a ventilation pipe 22 is connected to the top cover 21. The presence of the top cover 21 can ensure that a relatively closed space is formed inside the spraying box 2, reducing the possibility of external dust and impurities entering the inside of the spraying box 2. The closed environment helps to improve the spraying quality and reduce the influence of external factors on the spraying process. The presence of the ventilation pipe 22 can ensure that the pressure inside the spraying box 2 is balanced with the external environment, preventing spraying problems caused by pressure differences. Flammable and explosive gases may be generated during the spraying process. The ventilation pipe 22 can reduce the accumulation of these gases in the closed space and reduce the explosion risk. By maintaining the pressure balance between the inside and outside of the spraying box 2 through the ventilation pipe 22, the spraying interruption caused by pressure problems can be reduced.
[0025] Preferably, as in the above embodiment, an observation window is provided on the top cover 21. The presence of the observation window allows the operator to monitor the spraying process in real time without opening the top cover 21 and promptly discover any abnormal situations. The spraying state can be checked without frequently opening and closing the top cover 21, improving the monitoring efficiency. Monitoring the spraying process through the observation window can reduce the interference to the spraying environment caused by frequently opening the top cover 21. Maintaining the closed state of the spraying box 2 helps to reduce the possibility of external dust and impurities entering the inside of the spraying box 2. The design of the observation window reduces the situation where the operator needs to directly contact the inside of the spraying box 2, reducing the risk of exposure to harmful chemicals. The operator can promptly discover problems during the spraying process through the observation window and make necessary adjustments, which helps to improve the spraying quality. Monitoring through the observation window can reduce the spraying interruption caused by checking the spraying state, thereby improving the continuity and efficiency of spraying.
[0026] Preferably, as in the above embodiments, a lifting handle is provided on the filter mesh plate 16; the presence of the lifting handle enables the operator to easily lift the filter mesh plate 16 out of the filter box 14, facilitating cleaning or replacement; the design of the lifting handle simplifies the replacement process of the filter mesh plate 16, reducing maintenance time and costs; the lifting handle provides a firm gripping point, reducing the risk of injury to the operator when replacing or cleaning the filter mesh plate 16; timely cleaning or replacement of the filter mesh plate 16 can reduce the risk of blockage and ensure the normal operation of the wastewater treatment system.
[0027] In the automated PCBA surface spraying device of the present utility model, during operation, the PCBA to be sprayed is placed on the workpiece support plate 3; the top cover 21 is closed, and it is checked through the observation window whether the PCBA is correctly placed; the water spraying and air jetting head 5 is activated to pre-clean the surface of the PCBA, removing impurities such as dust and fluff; the adjusting cylinder 7 operates, driving the spraying nozzle 12 to move to a predetermined position through the clamping block 9 and the sliding seat 8; the spraying nozzle 12 starts to work, uniformly spraying the surface of the PCBA; during the spraying process, the waste liquid enters the filter box 14 through the connecting pipe 15; the waste liquid entering the filter box 14 first undergoes preliminary filtration through the filter mesh plate 16 to remove larger particulate matters; the waste liquid after preliminary filtration continues to flow and undergoes further filtration through the drain filter cartridge 17 to ensure the cleanliness of the discharged liquid; after the spraying is completed, the top cover 21 is opened, and the PCBA that has completed the spraying process is taken out; the filter mesh plate 16 can be easily taken out through the lifting handle for cleaning or replacement.
[0028] The installation method, connection method, or setting method of the automated PCBA surface spraying device of the present utility model are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out.
[0029] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims
1. An automated PCBA surface spraying device, characterized in that: It includes a main body bracket, a spray box, a water spray nozzle, an adjustment bracket and a spray nozzle, the main body bracket is fixedly installed with a spray box, the spray box is provided with a water spray nozzle, the water spray nozzle is used to clean the surface of the circuit board, the spray box is provided with two groups of spray nozzles, the spray nozzles are used to spray the surface of the circuit board, the adjustment bracket is fixedly installed on the outer side wall of the spray box, the adjustment bracket is provided with an adjustment mechanism, and the adjustment mechanism is used to adjust the horizontal position of the two groups of spray nozzles.
2. The automatic PCBA surface spraying device according to claim 1, characterized in that: It also includes a filter box, which is fixedly installed on the main body bracket. A filter cavity is arranged in the filter box. A connecting pipe is arranged on the spray box, and the output end of the connecting pipe is connected to the input end of the filter box. A filter mesh plate is arranged in the filter box, and the filter mesh plate is arranged on the lower side of the output end of the connecting pipe.
3. The automatic PCBA surface spraying device according to claim 2, characterized in that: The filter box is connected with a drainage port, and the drainage port of the filter box is connected with a drainage filter cartridge.
4. The automatic PCBA surface spraying device according to claim 2, characterized in that: A baffle is arranged on the inner wall of the filter box, and the baffle is arranged on the upper side of the drainage filter cartridge.
5. The automatic PCBA surface spraying device according to claim 1, characterized in that: The adjusting bracket is provided with a fixing block, and the fixing block is symmetrically provided with two groups of limiting pins, and the limiting pins are used to limit the moving path of the spray nozzle.
6. The automatic PCBA surface spraying device according to claim 1, characterized in that: A top cover is swingably arranged on the spray box, and a ventilation pipe is connected to the top cover.
7. The automatic PCBA surface spraying device according to claim 6, characterized in that: The top cover is provided with an observation window.
8. The automatic PCBA surface spraying device according to claim 2, characterized in that: A lifting handle is arranged on the filter screen plate.