Spraying device for three-proofing coating of circuit board and capable of avoiding coating waste

Abstract

The utility model discloses a circuit board three-proofing coating spraying device capable of avoiding coating waste, and relates to the technical field of circuit board spraying, a transmission mechanism is arranged at the top of a workbench, the top of the workbench is connected with a device shell, a material conveying mechanism is arranged in the device shell, and a splash-proof mechanism is arranged at the bottom of the device shell; a second motor is arranged in the device shell, the right end of the second motor is connected with the material conveying mechanism, the bottom of the second motor is connected with the splash-proof mechanism, and the second motor can drive the material conveying mechanism and the splash-proof mechanism to operate synchronously. A second motor drives a material conveying mechanism and a splash-proof mechanism to operate at the same time, so that when the equipment sprays the surface of the circuit board, the splash-proof mechanism can prevent electronic paint from splashing so as to avoid waste, and the splash-proof mechanism can be attached to the surface of the circuit board, so that the service life of the equipment is prolonged. And therefore, the paint on the surface of the circuit board is uniformly sprayed, and the efficiency of carrying out three-proofing coating operation on the surface of the circuit board by the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board spraying technology, specifically to a spraying device for conformal coating of circuit boards that avoids paint waste. Background Technology

[0002] A circuit board, also known as a printed circuit board, is composed of integrated circuits, quartz oscillators, trimmer capacitors, and printed circuit boards. Circuit boards are also called ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, etc. During circuit board manufacturing, the substrate often needs to be coated with electronic paint to achieve conformal coating standards. However, existing conformal coating equipment for circuit boards has some shortcomings, such as:

[0003] A spraying device for conformal coating of circuit boards is disclosed in application number CN202222628619.X. This device can preheat and pressurize the coating to improve the spraying effect. However, in actual use, since the nozzle of the device is always facing downward, when the coating is sprayed on the circuit board, the coating may splash due to external wind or other factors. This may result in uneven spraying and waste during the spraying process.

[0004] Therefore, we propose a spraying device for conformal coating of circuit boards that avoids paint waste, in order to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a spraying device for conformal coating of circuit boards that avoids paint waste, in order to solve the problem mentioned in the background art that most of the conformal coating spraying devices for circuit boards on the market may cause paint to splatter due to external wind or other factors, which may lead to uneven spraying and waste during the spraying process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spraying device for conformal coating of circuit boards that avoids paint waste, comprising a workbench and a device housing disposed on the top of the workbench, a conveying mechanism disposed on the top of the workbench and connected to the top of the workbench and the device housing, and a material conveying mechanism disposed inside the device housing, and a splash-proof mechanism disposed at the bottom of the device housing;

[0007] The device housing contains a second motor, the right end of which is connected to the material conveying mechanism, and the bottom of which is connected to the splash-proof mechanism. The second motor can drive the material conveying mechanism and the splash-proof mechanism to operate synchronously.

[0008] By using a second motor to simultaneously drive the material conveying mechanism and the anti-splash mechanism, the anti-splash mechanism can prevent electronic paint from splashing when the equipment is spraying paint onto the surface of the circuit board, thus avoiding waste. In addition, the anti-splash mechanism can fit into the surface of the circuit board, so that the paint on the surface of the circuit board is sprayed evenly, thereby increasing the efficiency of the equipment when performing conformal coating on the surface of the circuit board.

[0009] As a preferred technical solution of this utility model, the workbench is fixedly connected to the transmission mechanism, and the transmission mechanism includes a first motor, and the right end of the first motor is connected to a first drive shaft. A transmission belt is engaged on the outside of the first drive shaft, and a second drive shaft is engaged at the rear end of the transmission belt. Both the first drive shaft and the second drive shaft are composed of a rotating shaft and a sprocket body.

[0010] The above technical solution makes it easier for users to adjust the feeding efficiency of the equipment, thereby increasing the efficiency and adjustability of the equipment.

[0011] As a preferred technical solution of this utility model, the top of the workbench is provided with four sets of electric push rods, and the top of the electric push rods is fixedly connected to the device housing.

[0012] The above technical solution enables the workbench to be more stable when connected to the device housing, thereby increasing the stability of the equipment during operation.

[0013] As a preferred technical solution of this utility model, the device housing is fixedly connected to the second motor, and the right end of the second motor is connected to a drive rod, and the second motor is connected to the material conveying mechanism and the splash-proof mechanism through the drive rod.

[0014] The above technical solution enables the second motor to be more stable when connected to the material conveying mechanism or the anti-splash mechanism, thereby increasing the stability of the equipment during operation.

[0015] As a preferred technical solution of this utility model, the right end of the drive rod is connected to the inside of the device housing, and the material conveying mechanism includes a first bevel gear, and the first bevel gear is fixedly connected to the drive rod. The bottom of the first bevel gear meshes with a second bevel gear, the bottom of the second bevel gear is connected to a peristaltic pump rod, and a peristaltic pump housing is provided on the outside of the peristaltic pump rod. A transmission pipe is provided between the peristaltic pump housing and the peristaltic pump rod, and a paint spray nozzle is connected to the bottom of the transmission pipe.

[0016] The above technical solution enables the paint to be transferred to the spray nozzle by the peristaltic pump rod squeezing the transfer tube when it enters the spray nozzle, thereby enabling better control of the amount of paint.

[0017] As a preferred embodiment of this utility model, a liquid storage tank is connected to the right end of the transmission pipe, and the splash-proof mechanism includes a first sprocket, which is fixedly connected to a drive rod. A first chain is engaged on the outer side of the first sprocket, and a second sprocket is engaged at the bottom of the first chain. A third sprocket is connected to the right end of the second sprocket, and a second chain is engaged on the outer side of the third sprocket. A fourth sprocket is engaged on the rear side of the second chain. Rolling rollers are connected to the right ends of both the third and fourth sprockets.

[0018] The above technical solution makes it easier for the second motor to drive the two sets of rolling rollers to run synchronously, thereby increasing the efficiency of the equipment when spraying coatings on workpieces.

[0019] As a preferred technical solution of this utility model, the paint spray nozzle is located in the middle of the two sets of rolling rollers, and the right end of the rolling roller is rotatably connected to the device housing.

[0020] The above technical solution enables the rolling roller to protect both sides of the paint spray nozzle, thereby preventing the nozzle from being affected by external wind or other environmental factors and increasing the protective performance of the equipment.

[0021] Compared with the prior art, the beneficial effects of this utility model are: by driving the material conveying mechanism and the anti-splash mechanism simultaneously by the second motor, the anti-splash mechanism can prevent electronic paint from splashing when the equipment is spraying on the surface of the circuit board, thereby avoiding waste. In addition, the anti-splash mechanism can fit into the surface of the circuit board, so that the paint on the surface of the circuit board is sprayed evenly, thereby increasing the efficiency of the equipment when performing three-proof coating on the surface of the circuit board.

[0022] Furthermore, the design of the transmission mechanism makes it easier for users to adjust the feeding efficiency of the equipment, thereby increasing the efficiency and adjustability of the equipment.

[0023] Furthermore, by placing the paint spray nozzle in the middle of the rolling roller, the rolling roller can protect both sides of the paint spray nozzle, thereby preventing the paint spray nozzle from being affected by external wind or other environmental factors, thus increasing the protective performance of the equipment. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural schematic diagram of the front cross-section of this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the transmission mechanism of this utility model;

[0027] Figure 4This is a three-dimensional structural diagram of the transmission mechanism of this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the splash-proof mechanism of this utility model.

[0029] In the diagram: 1. Workbench; 2. Device housing; 3. First motor; 4. First drive shaft; 5. Conveyor belt; 6. Second drive shaft; 7. Electric push rod; 8. Second motor; 9. Drive rod; 10. First bevel gear; 11. Second bevel gear; 12. Peristaltic pump rod; 13. Peristaltic pump housing; 14. Transmission pipe; 15. Liquid storage tank; 16. Paint nozzle; 17. First sprocket; 18. First chain; 19. Second sprocket; 20. Third sprocket; 21. Second chain; 22. Fourth sprocket; 23. Rolling roller. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] To address the problem of uneven paint application and waste in existing technologies, the following solution is disclosed. Please refer to [link / reference]. Figures 1-5 This utility model provides a technical solution: a spraying device for conformal coating of circuit boards that avoids paint waste, including a workbench 1 and a device shell 2 disposed on the top of the workbench 1. The top of the workbench 1 is provided with a transmission mechanism, and the top of the workbench 1 is connected to the device shell 2. The device shell 2 is provided with a material conveying mechanism inside, and the bottom of the device shell 2 is provided with a splash-proof mechanism.

[0032] The device housing 2 is equipped with a second motor 8, and the right end of the second motor 8 is connected to the material conveying mechanism, and the bottom of the second motor 8 is connected to the anti-splash mechanism. The second motor 8 can drive the material conveying mechanism and the anti-splash mechanism to operate synchronously.

[0033] The workbench 1 is fixedly connected to the transmission mechanism, and the transmission mechanism includes a first motor 3, and the right end of the first motor 3 is connected to a first drive shaft 4. A transmission belt 5 is engaged on the outside of the first drive shaft 4, and a second drive shaft 6 is engaged at the rear end of the transmission belt 5. Both the first drive shaft 4 and the second drive shaft 6 are composed of a rotating shaft and a sprocket body.

[0034] The top of the workbench 1 is equipped with four sets of electric push rods 7, and the top of the electric push rods 7 is fixedly connected to the device housing 2; the inside of the device housing 2 is fixedly connected to the second motor 8, and the right end of the second motor 8 is connected to a drive rod 9, and the second motor 8 is connected to the material conveying mechanism and the splash prevention mechanism through the drive rod 9.

[0035] The right end of the drive rod 9 is connected to the inside of the device housing 2, and the material conveying mechanism includes a first bevel gear 10, and the first bevel gear 10 is fixedly connected to the drive rod 9. The bottom of the first bevel gear 10 is meshed with a second bevel gear 11, the bottom of the second bevel gear 11 is connected to a peristaltic pump rod 12, and a peristaltic pump housing 13 is provided on the outside of the peristaltic pump rod 12. A transmission pipe 14 is provided between the peristaltic pump housing 13 and the peristaltic pump rod 12, and a paint spray nozzle 16 is connected to the bottom of the transmission pipe 14.

[0036] The right end of the transmission pipe 14 is connected to the liquid storage tank 15, and the splash-proof mechanism includes a first sprocket 17, which is fixedly connected to the drive rod 9. A first chain 18 is engaged on the outside of the first sprocket 17, and a second sprocket 19 is engaged at the bottom of the first chain 18. A third sprocket 20 is connected to the right end of the second sprocket 19. A second chain 21 is engaged on the outside of the third sprocket 20, and a fourth sprocket 22 is engaged on the rear side of the second chain 21. Rolling rollers 23 are connected to the right ends of both the third sprocket 20 and the fourth sprocket 22. The paint spray nozzle 16 is located in the middle of the two sets of rolling rollers 23, and the right end of the rolling roller 23 is rotatably connected to the device housing 2.

[0037] Working principle: When using the spraying device for conformal coating of circuit boards, first connect the power supply of the equipment to the power grid, then place the circuit board on top of the transmission mechanism, then start the transmission mechanism to move the circuit board to the designated position, and at the same time start the second motor 8, so that the second motor 8 drives the material conveying mechanism and the anti-splash mechanism to run, so that the material conveying mechanism sprays paint on the top surface of the circuit board, while the anti-splash mechanism will adhere to the surface of the circuit board and protect the material conveying mechanism from splashes;

[0038] When the first motor 3 rotates, it will drive the first drive shaft 4 to rotate, which in turn drives the conveyor belt 5 to rotate, thereby moving the circuit board to the designated position under the drive of the conveyor belt 5.

[0039] When the second motor 8 rotates, it drives the first bevel gear 10 to rotate via the drive rod 9. This causes the first bevel gear 10 to drive the second bevel gear 11 and the peristaltic pump rod 12 to rotate. The peristaltic pump rod 12, in conjunction with the peristaltic pump housing 13, squeezes the transmission tube 14, thereby transmitting the paint to the spray nozzle 16 for spraying onto the top of the circuit board. The drive rod 9 also drives the first sprocket 17 to rotate, which in turn drives the second sprocket 19 via the first chain 18. The second sprocket 19, in turn, drives the third sprocket 20 to rotate, which in turn drives the fourth sprocket 22 via the second chain 21. Both the third sprocket 20 and the fourth sprocket 22 simultaneously drive the rolling roller 23 to rotate. When some of the paint sprayed from the spray nozzle 16 is applied to the rolling roller 23, the roller 23 adheres to the top of the circuit board, thus coating the surface of the circuit board with paint.

[0040] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A spraying device for conformal coating of circuit boards to avoid paint waste, comprising a workbench (1) and a device housing (2) disposed on the top of the workbench (1), characterized in that, The top of the workbench (1) is provided with a transmission mechanism, and the top of the workbench (1) is connected to the device shell (2). The device shell (2) is provided with a material conveying mechanism inside, and the bottom of the device shell (2) is provided with a splash-proof mechanism. The device housing (2) is equipped with a second motor (8), and the right end of the second motor (8) is connected to the material conveying mechanism, and the bottom of the second motor (8) is connected to the splash-proof mechanism. The second motor (8) can drive the material conveying mechanism and the splash-proof mechanism to operate synchronously.

2. The spraying device for conformal coating of circuit boards according to claim 1, which avoids paint waste, is characterized in that, The workbench (1) is fixedly connected to the transmission mechanism, and the transmission mechanism includes a first motor (3), and the right end of the first motor (3) is connected to a first drive shaft (4). A transmission belt (5) is engaged on the outside of the first drive shaft (4), and a second drive shaft (6) is engaged at the rear end of the transmission belt (5). Both the first drive shaft (4) and the second drive shaft (6) are composed of a rotating shaft and a sprocket body.

3. The spraying device for conformal coating of circuit boards according to claim 2, which avoids paint waste, is characterized in that, The workbench (1) is equipped with four sets of electric push rods (7) on its top, and the top of the electric push rods (7) is fixedly connected to the device housing (2).

4. The spraying device for conformal coating of circuit boards according to claim 3, which avoids paint waste, is characterized in that, The device housing (2) is fixedly connected to the second motor (8), and the right end of the second motor (8) is connected to a drive rod (9). The second motor (8) is connected to the material conveying mechanism and the splash-proof mechanism through the drive rod (9).

5. The spraying device for conformal coating of circuit boards according to claim 4, which avoids paint waste, is characterized in that, The right end of the drive rod (9) is connected to the inside of the device housing (2), and the material conveying mechanism includes a first bevel gear (10), and the first bevel gear (10) is fixedly connected to the drive rod (9). The bottom of the first bevel gear (10) is meshed with a second bevel gear (11), the bottom of the second bevel gear (11) is connected to a peristaltic pump rod (12), and a peristaltic pump housing (13) is provided on the outside of the peristaltic pump rod (12). A transmission pipe (14) is provided between the peristaltic pump housing (13) and the peristaltic pump rod (12), and a paint spray nozzle (16) is connected to the bottom of the transmission pipe (14).

6. The spraying device for conformal coating of circuit boards according to claim 5, which avoids paint waste, is characterized in that, The right end of the transmission pipe (14) is connected to a liquid storage tank (15), and the splash-proof mechanism includes a first sprocket (17), and the first sprocket (17) is fixedly connected to the drive rod (9). The first chain (18) is engaged on the outside of the first sprocket (17), and the second sprocket (19) is engaged at the bottom of the first chain (18). The right end of the second sprocket (19) is connected to a third sprocket (20). The outside of the third sprocket (20) is engaged with a second chain (21), and the rear side of the second chain (21) is engaged with a fourth sprocket (22). The right ends of the third sprocket (20) and the fourth sprocket (22) are both connected to a rolling roller (23).

7. The spraying device for conformal coating of circuit boards according to claim 6, which avoids paint waste, is characterized in that, The paint spray nozzle (16) is located in the middle of the two sets of rolling rollers (23), and the right end of the rolling roller (23) is rotatably connected to the device housing (2).

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