Automatic three-proofing lacquer painting device for smoke alarm circuit board

By designing an automatic painting device, the conformal coating is recycled using a water pump and transmission mechanism, solving the problem of waste of conformal coating in the existing technology and improving spraying efficiency and flexibility.

CN224208331UActive Publication Date: 2026-05-08LUODING BAOJIE ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUODING BAOJIE ELECTRONICS CO LTD
Filing Date
2025-05-06
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing conformal coating devices for smoke alarm circuit boards cannot recycle excess conformal coating material, resulting in waste.

Method used

An automatic conformal coating device for smoke alarm circuit boards was designed. The device utilizes a water pump and a transmission mechanism to achieve the recycling of conformal coating. The circuit boards are sprayed with a spray nozzle and automatically coated by a conveyor belt. The controller adjusts the speed of the motor and water pump to adapt to different coating requirements.

Benefits of technology

It enables the recycling of conformal coatings, reduces material waste, and improves spraying efficiency and flexibility.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a smoke alarm circuit board conformal coating automatic painting device, which relates to the smoke alarm technology field, and comprises a table board, the outer surface of the table board is communicated with a conformal coating pool, the outer surface of the table board is connected with four table legs, the outer surface of the table board is connected with a controller, and the controller is connected with a controller. The outer surface of the table plate is connected with fixing frames, the outer surface of one fixing frame is connected with two mounting frames, the outer surface of the fixing frame is connected with a transmission mechanism, the outer surface of the fixing frame is connected with a water pump, and the input end of the water pump is communicated with a guide-in pipe. According to the automatic three-proofing paint painting device for the smoke alarm circuit board, three-proofing paint in a three-proofing paint pool can be pumped to the position of a spraying piece through a water pump through a guide-in pipe and a guide-out pipe, so that painting operation on the smoke alarm circuit board is achieved, the three-proofing paint can fall into the three-proofing paint pool through a material leakage hole, and the three-proofing paint can be sprayed to the smoke alarm circuit board through the three-proofing paint pool. And the cyclic utilization effect is achieved through pumping of the water pump.
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Description

Technical Field

[0001] This utility model relates to an automatic conformal coating device for a smoke alarm circuit board, belonging to the technical field of smoke alarms. Background Technology

[0002] Smoke detectors prevent fires by monitoring the concentration of smoke. They use ionization smoke sensors, which are technologically advanced, stable, and reliable sensors widely used in various fire alarm systems. Their performance is far superior to that of gas-sensitive resistor-type fire alarms. When manufacturing smoke detectors, factories need to add circuit boards inside to control their normal operation. Before installing the circuit boards, a three-proof coating is applied to their surface to prevent them from aging.

[0003] However, existing conformal coating devices for smoke alarm circuit boards cannot recover excess conformal coating material during the coating process, resulting in waste of some of the coating material. To address this issue, we provide an automatic conformal coating device for smoke alarm circuit boards. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an automatic conformal coating device for smoke alarm circuit boards, the specific technical solution of which is as follows:

[0005] An automatic conformal coating device for a smoke alarm circuit board is disclosed. The device includes a tabletop, an outer surface of which is connected to a conformal coating tank. Four table legs are connected to the outer surface of the tabletop. A controller is connected to the outer surface of the tabletop. A mounting frame is connected to the outer surface of the tabletop, with two mounting brackets connected to the outer surface of one of the mounting frames. A transmission mechanism is connected to the outer surface of the mounting frame. A water pump is connected to the outer surface of the mounting frame. The input end of the water pump is connected to an inlet pipe, the bottom end of which is located inside the conformal coating tank. The output end of the water pump is connected to an outlet pipe, the bottom end of which penetrates the outer surface of the mounting frame and extends to the outside of the mounting frame. A spray nozzle is connected to the bottom end of the outlet pipe.

[0006] Preferably, the interior of the three-proof paint tank is provided with an inclined plate, the outer surface of the three-proof paint tank is connected to a drain pipe, and the transmission mechanism includes a motor on the outer surface of one of the mounting brackets.

[0007] Preferably, the transmission structure includes two first bearings embedded in the outer surface of the fixed frame, two second bearings embedded in the outer surface of the fixed frame, and a third bearing embedded in the outer surface of another mounting frame.

[0008] Preferably, the output end of the motor is connected to a first rotating rod, the end of the first rotating rod away from the motor passes through one of the second bearings and extends into the interior of the fixed frame, the end of the first rotating rod away from the second bearing is connected to the inner ring of one of the first bearings, and a drive wheel is connected to the outer surface of the first rotating rod.

[0009] Preferably, the inner ring of the other first bearing is connected to a second rotating rod, the end of the second rotating rod away from the first bearing passes through the other second bearing and extends to the outside of the fixed frame, the end of the second rotating rod away from the fixed frame is connected to the inner ring of the third bearing, the outer surface of the second rotating rod is connected to a driven wheel, and the outer surface of the driving wheel and the outer surface of the driven wheel are connected by belt drive.

[0010] Preferably, the outer surfaces of the first rotating rod and the second rotating rod are connected to a conveyor belt, and the outer surface of the conveyor belt is provided with a plurality of material leakage holes.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This automatic conformal coating device for smoke alarm circuit boards uses a water pump to pump conformal coating from a tank to the spraying area via inlet and outlet pipes, thus coating the smoke alarm circuit boards. A discharge hole allows the conformal coating to fall back into the tank, where it is then pumped back by the water pump, creating a recycling effect. A motor drives a first rotating rod, which in turn rotates a drive wheel via a belt, causing the conveyor belt to rotate and transport the circuit boards to the spraying area for automatic coating. A controller adjusts the motor speed and water pump output to regulate the conveyor belt speed and adapt to different spraying requirements. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a top sectional view of the present invention;

[0015] Figure 3 This is a side sectional view of the present invention;

[0016] Figure 4 This is a bottom view of the present invention.

[0017] Attached Figure Descriptions: 1. Tabletop; 2. Conformal paint tank; 3. Table legs; 4. Controller; 5. Fixing frame; 6. Mounting frame; 7. Transmission mechanism; 8. Water pump; 9. Inlet pipe; 10. Outlet pipe; 11. Spraying component; 12. Inclined plate; 13. Water drain pipe; 701. Motor; 702. First bearing; 703. Second bearing; 704. Third bearing; 705. First rotating rod; 706. Drive wheel; 707. Second rotating rod; 708. Driven wheel; 14. Conveyor belt; 15. Material discharge hole. Detailed Implementation

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] 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.

[0020] Please see Figure 1-4In this utility model, an automatic conformal coating device for a smoke alarm circuit board includes a table 1. A conformal coating tank 2 is connected to the outer surface of the table 1. Four table legs 3 are connected to the outer surface of the table 1. A controller 4 is connected to the outer surface of the table 1. A fixing frame 5 is connected to the outer surface of the table 1. Two mounting brackets 6 are connected to the outer surface of one of the fixing brackets 5. A transmission mechanism 7 is connected to the outer surface of the fixing frame 5. An inclined plate 12 is provided inside the conformal coating tank 2. A drain pipe 13 is connected to the outer surface of the conformal coating tank 2. The transmission mechanism 7 includes a motor 701 on the outer surface of one of the mounting brackets 6. The transmission mechanism 7 includes two first bearings 702 embedded in the outer surface of the fixing frame 5, two second bearings 703 embedded in the outer surface of the fixing frame 5, and a third bearing 704 embedded in the outer surface of the other mounting bracket 6. A first rotating rod 705 is connected to the output end of the motor 701. The end of the first rotating rod 705 away from the motor 701 passes through one of the second bearings 703 and extends into the interior of the fixing frame 5. The end of the first rotating rod 705 away from the second bearing 703... One end is connected to the inner ring of one of the first bearings 702. The outer surface of the first rotating rod 705 is connected to the driving wheel 706. The inner ring of the other first bearing 702 is connected to the second rotating rod 707. The end of the second rotating rod 707 away from the first bearing 702 passes through the other second bearing 703 and extends to the outside of the fixed frame 5. The end of the second rotating rod 707 away from the fixed frame 5 is connected to the inner ring of the third bearing 704. The outer surface of the second rotating rod 707 is connected to the driven wheel 708. The outer surface of the driving wheel 706 is connected to the driven wheel 708. The outer surface of 08 is connected by a belt drive. The motor 701 can drive the first rotating rod 705 to rotate, which can drive the drive wheel 706 to rotate. The drive wheel 706 can drive the driven wheel 708 to rotate through the belt, thereby rotating the conveyor belt 14. This allows the circuit board on the conveyor belt 14 to be transported to the spraying area, realizing automatic painting. The controller 4 can control the speed of the motor 701 and the pumping volume of the water pump 8 to adjust the conveying speed of the conveyor belt 14 to adapt to different spraying requirements.

[0021] A water pump 8 is connected to the outer surface of the mounting bracket 5. The input end of the water pump 8 is connected to an inlet pipe 9. The bottom end of the inlet pipe 9 is located inside the conformal coating tank 2. The output end of the water pump 8 is connected to an outlet pipe 10. The bottom end of the outlet pipe 10 passes through the outer surface of the mounting bracket 5 and extends to the outside of the mounting bracket 5. The bottom end of the outlet pipe 10 is connected to a spraying component 11. The outer surfaces of the first rotating rod 705 and the second rotating rod 707 are connected to a conveyor belt 14. The outer surface of the conveyor belt 14 has several leakage holes 15. The conformal coating in the conformal coating tank 2 can be pumped to the spraying component 11 through the inlet pipe 9 and the outlet pipe 10 by the water pump 8, thereby realizing the coating operation of the smoke alarm circuit board. The leakage holes 15 can make the conformal coating fall into the conformal coating tank 2, and then be pumped by the water pump 8 to form a recycling effect.

[0022] The working principle of this utility model is as follows:

[0023] In use, first pour the conformal coating into the conformal coating tank 2. Then, start the motor 701 via the controller 4. The motor 701 will drive the first rotating rod 705 to rotate. When the first rotating rod 705 rotates, it will drive the drive wheel 706 to rotate. Since the drive wheel 706 and the driven wheel 708 are connected by a belt, when the drive wheel 706 rotates, the driven wheel 708 will also rotate. When the drive wheel 706 and the driven wheel 708 rotate simultaneously, they will push the conveyor belt 14 into the... The machine rotates, and then the water pump 8 is started by the controller 4. The water pump 8 will draw the conformal coating material in the conformal coating material tank 2 through the inlet pipe 9, and then transport it to the position of the spraying component 11 through the outlet pipe 10. Then the spraying component 11 sprays it onto the conveyor belt 14. Then, the speed of the motor 701 and the pumping volume of the water pump 8 are adjusted by the controller 4 according to the needs. Finally, the circuit board is placed on the conveyor belt 14 to complete the automatic painting operation. When it is necessary to release the conformal coating material tank 2, the drain pipe 13 is opened to release the conformal coating material.

[0024] 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.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0026] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An automatic conformal coating device for a smoke alarm circuit board, comprising a table (1), characterized in that: The outer surface of the tabletop (1) is connected to a three-proof paint tank (2), the outer surface of the tabletop (1) is connected to four table legs (3), the outer surface of the tabletop (1) is connected to a controller (4), the outer surface of the tabletop (1) is connected to a fixing frame (5), one of the fixing frames (5) is connected to two mounting brackets (6), the outer surface of the fixing frame (5) is connected to a transmission mechanism (7), the outer surface of the fixing frame (5) is connected to a water pump (8), the input end of the water pump (8) is connected to an inlet pipe (9), the bottom end of the inlet pipe (9) is located inside the three-proof paint tank (2), the output end of the water pump (8) is connected to an outlet pipe (10), the bottom end of the outlet pipe (10) penetrates the outer surface of the fixing frame (5) and extends to the outside of the fixing frame (5), the bottom end of the outlet pipe (10) is connected to a spraying component (11).

2. The automatic conformal coating device for a smoke alarm circuit board according to claim 1, characterized in that: The interior of the three-proof paint tank (2) is provided with an inclined plate (12), and the outer surface of the three-proof paint tank (2) is connected to a drain pipe (13). The transmission mechanism (7) includes a motor (701) on the outer surface of one of the mounting brackets (6).

3. The automatic conformal coating device for a smoke alarm circuit board according to claim 2, characterized in that: The transmission mechanism (7) includes two first bearings (702) embedded in the outer surface of the fixed frame (5), two second bearings (703) embedded in the outer surface of the fixed frame (5), and a third bearing (704) embedded in the outer surface of another mounting frame (6).

4. The automatic conformal coating device for a smoke alarm circuit board according to claim 2, characterized in that: The output end of the motor (701) is connected to a first rotating rod (705). The end of the first rotating rod (705) away from the motor (701) passes through one of the second bearings (703) and extends into the interior of the fixing frame (5). The end of the first rotating rod (705) away from the second bearing (703) is connected to the inner ring of one of the first bearings (702). The outer surface of the first rotating rod (705) is connected to a drive wheel (706).

5. The automatic conformal coating device for a smoke alarm circuit board according to claim 3, characterized in that: The inner ring of the other first bearing (702) is connected to a second rotating rod (707). The end of the second rotating rod (707) away from the first bearing (702) passes through another second bearing (703) and extends to the outside of the fixed frame (5). The end of the second rotating rod (707) away from the fixed frame (5) is connected to the inner ring of the third bearing (704). The outer surface of the second rotating rod (707) is connected to a driven wheel (708). The outer surface of the driving wheel (706) and the outer surface of the driven wheel (708) are connected by a belt drive.

6. The automatic conformal coating device for a smoke alarm circuit board according to claim 4, characterized in that: The outer surface of the first rotating rod (705) and the outer surface of the second rotating rod (707) are connected to a conveyor belt (14), and the outer surface of the conveyor belt (14) is provided with a plurality of material leakage holes (15).