Sound circuit board coating protective film device

Abstract

The utility model relates to the technical field of coating technology discloses sound circuit board coating protection film device, including base, the base bottom fixedly connected with two supports, the base top edge fixedly connected with the protective shell, the protective shell inboard fixedly connected with the supporting plate, the supporting plate top fixedly connected with electric guide rail no.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a device for coating protective film on audio circuit boards. Background Technology

[0002] Audio circuit boards are core electronic components in audio equipment (such as speakers, amplifiers, and headphones) responsible for processing and transmitting audio signals. By integrating various electronic components, they perform functions such as amplification, filtering, modulation, and demodulation of audio signals, ultimately enabling the audio equipment to produce sound. During production, transportation, and use, audio circuit boards face various adverse factors. Coating them with a protective film effectively protects them from these factors, thereby improving their stability, reliability, and lifespan.

[0003] Currently, traditional circuit board protective film coating equipment typically places the circuit board in a fixed area before coating. This method has several drawbacks: because the coating area is fixed, it is difficult to flexibly adjust the station specifications when dealing with circuit boards of different sizes, which limits the applicability of the equipment and fails to meet diverse production needs. Furthermore, when coating circuit boards in a horizontal position, the lack of a vertical limiting structure makes them prone to displacement or shaking due to the impact of the coating liquid or mechanical movement, resulting in uneven coating thickness, localized missed coatings, and other problems that affect the stability of coating quality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a device for coating protective film on audio circuit boards, which aims to improve the problems in the prior art that the coating area cannot be dynamically adjusted according to circuit boards of different sizes, and that the waste gas generated during curing cannot be treated in a timely manner.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An audio circuit board coating protective film device includes a base, two brackets fixedly connected to the bottom of the base, a protective shell fixedly connected to the top edge of the base, a support plate fixedly connected to the inner side of the protective shell, a second electric guide rail fixedly connected to the top of the support plate, a coating nozzle fixedly connected to the output end of the second electric guide rail, a first electric guide rail fixedly connected to the top of the base, an operating table fixedly connected to the output end of the first electric guide rail, a clamping assembly inside the operating table, and a filter assembly outside the protective shell.

[0007] The clamping assembly includes two clamping plates, which are slidably connected inside the operating table. Two electric push rods are fixedly connected inside the operating table. The output ends of the two electric push rods are fixedly connected to the outer wall of one of the clamping plates. A connecting rod is rotatably connected to the middle of each clamping plate, and a rotating rod is rotatably connected between the two connecting rods. A connecting block is fixedly connected to the top of the clamping plate, and a clamping plate is fixedly connected to the top of the connecting block. A fixing block is fixedly connected to the outer side of the clamping plate. A handle bolt is threadedly connected to the middle of the fixing block, and a pressing block is fixedly connected to the bottom of the handle bolt.

[0008] As a further description of the above technical solution:

[0009] The filter assembly includes a housing, which is fixedly connected to the outside of a protective shell. A suction pipe is fixedly connected to the side of the housing near the protective shell. Two pins are slidably connected inside the housing. A baffle is fixedly connected to the outer periphery of each pin. A spring is fixedly connected to the outer side of the baffle. The end of the spring away from the baffle is fixedly connected to the inner wall of the housing. The spring is sleeved on the outer periphery of the pins. A filter plate is slidably connected inside the housing. Multiple activated carbons are placed inside the filter plate. An exhaust fan is installed on the top of the housing.

[0010] As a further description of the above technical solution:

[0011] A pull ring is fixedly connected to the end of the pin away from the outer casing;

[0012] As a further description of the above technical solution:

[0013] Both baffles are slidably connected inside the housing, and the end of the pin away from the pull ring is slidably connected inside the filter plate;

[0014] As a further description of the above technical solution:

[0015] The rotating rod is rotatably connected inside the operating table.

[0016] As a further description of the above technical solution:

[0017] Both connecting blocks are slidably connected to the inside of the operating table, and both clamps are slidably connected to the top of the operating table;

[0018] As a further description of the above technical solution:

[0019] The extrusion block is slidably connected to one side of the clamping plate, and a rubber pad is fixedly connected to the bottom of the extrusion block;

[0020] As a further description of the above technical solution:

[0021] The suction pipe is fixedly connected inside the protective shell.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the electric push rod is activated to extend and retract the second clamping plate. Through the combined action of the connecting rod and the rotating rod, the two clamping plates can move in opposite directions. A connecting block is fixed to the top of the second clamping plate, which drives the first clamping plate to move synchronously, thus adjusting the distance between the first clamping plates according to the different widths of the circuit boards. Simultaneously, rotating the handle bolt drives the pressing block downwards, thereby stably clamping the circuit board in the vertical direction, effectively preventing displacement of the circuit board during coating. This ensures the uniformity of the protective film coating and operational stability, providing a reliable guarantee for high-quality circuit board protection.

[0024] 2. In this utility model, the exhaust gas generated after the circuit board coating is cured with ultraviolet light is drawn into the outer casing through the suction pipe by the exhaust fan. The exhaust gas flows upward and passes through a filter plate containing activated carbon, where harmful substances are adsorbed and purified before being discharged outside the casing to avoid environmental pollution. When the filter plate needs to be replaced, pulling the pin will compress the baffle spring, and the filter plate can be disassembled and replaced once the pin is disengaged. When stationary, the spring supports the baffle to prevent the pin from sliding, ensuring the stability of the filter plate and providing a guarantee for the continuous and reliable operation of the exhaust gas purification function. Attached Figure Description

[0025] Figure 1 This is a first-view perspective perspective of the audio circuit board coating protective film device proposed in this utility model;

[0026] Figure 2 This is an enlarged view of point A in the audio circuit board coating protective film device proposed in this utility model;

[0027] Figure 3 This is a second-view perspective perspective of the audio circuit board coating protective film device proposed in this utility model;

[0028] Figure 4 A three-dimensional schematic diagram of the clamping assembly of the audio circuit board coating protective film device proposed in this utility model;

[0029] Figure 5 This is a three-dimensional schematic diagram of the housing of the audio circuit board coating protective film device proposed in this utility model;

[0030] Figure 6 This is a structural cross-sectional view of the housing of the audio circuit board coating protective film device proposed in this utility model;

[0031] Figure 7This is a cross-sectional view of the filter plate of the audio circuit board coating protective film device proposed in this utility model.

[0032] Legend:

[0033] 1. Protective shell; 2. Coating nozzle; 3. Support plate; 4. Electric guide rail one; 5. Bracket; 6. Operating table; 7. Clamping plate one; 8. Base; 9. Handle bolt; 10. Electric guide rail two; 11. Fixing block; 12. Extrusion block; 13. Rubber pad; 14. Connecting block; 15. Pin; 16. Exhaust fan; 17. Outer shell; 18. Filter plate; 19. Clamping plate two; 20. Connecting rod; 21. Rotating rod; 22. Electric push rod; 23. Suction pipe; 24. Spring; 25. Baffle; 26. Activated carbon; 27. Pull ring. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-4 This utility model provides an embodiment of an audio circuit board coating protective film device, including a base 8, two supports 5 fixedly connected to the bottom of the base 8, a protective shell 1 fixedly connected to the top edge of the base 8, a support plate 3 fixedly connected to the inner side of the protective shell 1, an electric guide rail 2 10 fixedly connected to the top of the support plate 3, a coating nozzle 2 fixedly connected to the output end of the electric guide rail 2 10, an electric guide rail 4 fixedly connected to the top of the base 8, and an operating table 6 fixedly connected to the output end of the electric guide rail 4. The controller starts the electric guide rail 4 and the electric guide rail 2 10, and the operating table 6 is sent to the coating area through the electric guide rail 4. The electric guide rail 2 10 drives the coating nozzle 2 to move back and forth to perform coating. After coating is completed, the operating table 6 is transported to the ultraviolet curing area through the electric guide rail 4 to perform curing. The operating table 6 is provided with a clamping component inside, and a filter component is provided on the outside of the protective shell 1.

[0036] The clamping assembly includes two clamping plates 19, which are slidably connected inside the operating table 6. Two electric push rods 22 are fixedly connected inside the operating table 6. The output ends of both electric push rods 22 are fixedly connected to the outer wall of one of the clamping plates 19. A connecting rod 20 is rotatably connected to the middle of each clamping plate 19, and a rotating rod 21 is rotatably connected between the two connecting rods 20. A connecting block 14 is fixedly connected to the top of each clamping plate 19, and a clamping plate 7 is fixedly connected to the top of the connecting block 14. When the electric push rod 22 is activated, it moves the clamping plate 19 at its output end, and then moves through the connecting rod 7 in the middle of the clamping plate 19. The connecting rod 20 drives the rotating rod 21 to rotate, so the rotating rod 21 will drive the connecting rod 20 on the other side to move, thereby driving the other clamping plate 19 to move, and then the connecting block 14 drives the clamping plate 7 to move, thereby achieving the effect of adjusting the distance between the two clamping plates 7. The outer side of the clamping plate 7 is fixedly connected to the fixing block 11, and the middle of the fixing block 11 is threadedly connected to the handle bolt 9. The bottom of the handle bolt 9 is fixedly connected to the pressing block 12. Rotating the handle bolt 9 can drive the pressing block 12 to move downward, thereby achieving the effect of fixing the circuit board in the vertical direction and preventing displacement during coating, which would lead to uneven coating.

[0037] Reference Figures 2-7 The filter assembly includes a housing 17, which is fixedly connected to the outside of a protective shell 1. A suction pipe 23 is fixedly connected to the side of the housing 17 closest to the protective shell 1. Two pins 15 are slidably connected inside the housing 17. Baffles 25 are fixedly connected to the outer periphery of each pin 15. A spring 24 is fixedly connected to the outer periphery of the baffles 25. The end of the spring 24 away from the baffles 25 is fixedly connected to the inner wall of the housing 17. The spring 24 is sleeved on the outer periphery of the pins 15. A filter plate 18 is slidably connected inside the housing 17. Multiple activated carbons 26 are placed inside the filter plate 18. An exhaust fan 16 is installed on the top of the housing 17. When the circuit board is cured by ultraviolet light after coating, it will generate waste gas. This waste gas needs to be treated before it can be discharged into the air. When the exhaust fan 16 is turned on, the exhaust fan 16 will exhaust the air inside the housing 17 and then draw the waste gas into the housing 17. The waste gas will first pass through the filter plate 18, and then be drawn out by the adsorption of the activated carbon 26. Finally, it will be discharged to the outside of the housing 17, thereby avoiding waste gas pollution to the environment. When the filter plate 18 needs to be replaced, pull the pin 15 to disengage it from the filter plate 18 so that it can be replaced. After the replacement is completed, the spring 24 will support the baffle 25, which in turn supports the pin 15, preventing the pin 15 from sliding freely and causing the filter plate 18 to be unable to remain stable inside the housing 17.

[0038] Reference Figure 6 A pull ring 27 is fixedly connected to the end of the pin 15 away from the outer casing 17. The pin 15 can be moved by pulling the pull ring 27.

[0039] Reference Figure 6 Both baffles 25 are slidably connected inside the housing 17. The end of the pin 15 away from the pull ring 27 is slidably connected inside the filter plate 18. By pulling the pull ring 27, the pin 15 is moved, and the pin 15 will drive the baffle 25 to slide inside the housing 17 until the pin 15 is disengaged from the filter plate 18, then the filter plate 18 can be removed for replacement.

[0040] Reference Figure 4 The rotating rod 21 is rotatably connected inside the operating table 6. When the rotating rod 21 is driven, it will rotate inside the operating table 6.

[0041] Reference Figure 1 , Figure 2 and Figure 6 Both connecting blocks 14 are slidably connected to the inside of the operating table 6, and both clamping plates 7 are slidably connected to the top of the operating table 6. When the connecting blocks 14 are driven by external force, they will slide inside the operating table 6, and then drive the clamping plates 7 to slide on the top of the operating table 6, thereby adjusting the distance between the two clamping plates 7 according to the different widths of the circuit boards.

[0042] Reference Figure 2 The extrusion block 12 is slidably connected to the outside of the clamping plate 7. When the extrusion block 12 is driven, it will slide on the outside of the clamping plate 7. A rubber pad 13 is fixedly connected to the bottom of the extrusion block 12. By setting the rubber pad 13, the circuit board can be prevented from being excessively extruded and the circuit board can be avoided from being damaged.

[0043] Reference Figure 1 The suction pipe 23 is fixedly connected inside the protective shell 1. After the circuit board is coated, it will be cured by ultraviolet light. During the curing process, waste gas will be generated, and this waste gas will be transported to the purification area through the suction pipe 23.

[0044] Working principle: When coating is required on the circuit board, the electric push rod 22 is activated. The electric push rod 22 drives the connected clamping plate 19 to move. When the electric push rod 22 retracts one clamping plate 19, the movement of clamping plate 19 causes the connected connecting rod 20 to move, thereby causing the rotating rod 21 to rotate counterclockwise. This then causes the other connecting rod 20 to move, displacing clamping plate 19 and causing the two clamping plates 19 to move in opposite directions. When the electric push rod 22 expands one clamping plate 19, the movement of clamping plate 19 causes the connected connecting rod 20 to move, thereby causing the rotating rod 21 to rotate clockwise. This then causes the other connecting rod 20 to move clamping plate 19, thus causing the two clamping plates 19 to move in opposite directions. Furthermore, a connecting block 14 is fixed to the top of clamping plate 19, which drives clamping plate 7 to move, thereby adjusting the distance between the two clamping plates 7 according to the different widths of the circuit board. A handle bolt 9 is also provided. By rotating the handle bolt 9, the pressing block 12 is moved downward, thereby achieving the effect of fixing the circuit board vertically.

[0045] After the circuit board coating is completed, it undergoes ultraviolet curing. During the curing process, some waste gas is generated. At this time, the exhaust fan 16 is activated, which exhausts the air inside the housing 17. Then, the waste gas is drawn into the housing 17 through the suction pipe 23. The waste gas first passes through the filter plate 18, where it is adsorbed by the activated carbon 26, thus achieving a purification effect. It is then discharged to the outside of the housing 17, thereby avoiding the risk of air pollution. When the filter plate 18 needs to be replaced, the pin 15 is pulled. The pin 15 moves the baffle 25 and compresses the spring 24. When the pin 15 disengages from the filter plate 18, the filter plate 18 can be removed and replaced. When the pin 15 is stationary, the spring 24 supports the baffle 25, preventing the pin 15 from sliding freely, thus ensuring that the filter plate 18 does not slide freely.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for coating a protective film on an audio circuit board, comprising a base (8), characterized in that: The base (8) has two brackets (5) fixedly connected to its bottom. The base (8) has a protective shell (1) fixedly connected to its top edge. The protective shell (1) has a support plate (3) fixedly connected to its inner side. The support plate (3) has an electric guide rail (10) fixedly connected to its top. The output end of the electric guide rail (10) has a coating nozzle (2) fixedly connected to its output end. The base (8) has an electric guide rail (4) fixedly connected to its top. The output end of the electric guide rail (4) has an operating table (6) fixedly connected to its output end. The operating table (6) has a clamping assembly inside it. The protective shell (1) has a filter assembly on its outer side. The clamping assembly includes two clamping plates (19), which are slidably connected inside the operating table (6). Two electric push rods (22) are fixedly connected inside the operating table (6). The output ends of the two electric push rods (22) are fixedly connected to the outer wall of one of the clamping plates (19). A connecting rod (20) is rotatably connected to the middle of each of the two clamping plates (19). A rotating rod (21) is rotatably connected between the two connecting rods (20). A connecting block (14) is fixedly connected to the top of the clamping plate (19). A clamping plate (7) is fixedly connected to the top of the connecting block (14). A fixing block (11) is fixedly connected to the outer side of the clamping plate (7). A handle bolt (9) is threadedly connected to the middle of the fixing block (11). A pressing block (12) is fixedly connected to the bottom of the handle bolt (9).

2. The device for coating a protective film on an audio circuit board according to claim 1, characterized in that: The filter assembly includes a housing (17), which is fixedly connected to the outside of the protective shell (1). A suction pipe (23) is fixedly connected to the side of the housing (17) near the protective shell (1). Two pins (15) are slidably connected inside the housing (17). Baffles (25) are fixedly connected to the outer periphery of each of the two pins (15). A spring (24) is fixedly connected to the outer periphery of the baffles (25). The end of the spring (24) away from the baffles (25) is fixedly connected to the inner wall of the housing (17). The spring (24) is sleeved on the outer periphery of the pins (15). A filter plate (18) is slidably connected inside the housing (17). Multiple activated carbons (26) are placed inside the filter plate (18). An exhaust fan (16) is installed on the top of the housing (17).

3. The device for coating a protective film on an audio circuit board according to claim 2, characterized in that: A pull ring (27) is fixedly connected to the end of the pin (15) away from the outer casing (17).

4. The device for coating a protective film on an audio circuit board according to claim 3, characterized in that: Both baffles (25) are slidably connected inside the housing (17), and the end of the pin (15) away from the pull ring (27) is slidably connected inside the filter plate (18).

5. The device for coating a protective film on an audio circuit board according to claim 1, characterized in that: The rotating rod (21) is rotatably connected inside the operating table (6).

6. The device for coating a protective film on an audio circuit board according to claim 1, characterized in that: Both connecting blocks (14) are slidably connected to the inside of the operating table (6), and both clamping plates (7) are slidably connected to the top of the operating table (6).

7. The device for coating a protective film on an audio circuit board according to claim 1, characterized in that: The extrusion block (12) is slidably connected to the outside of the clamping plate (7), and a rubber pad (13) is fixedly connected to the bottom of the extrusion block (12).

8. The device for coating a protective film on an audio circuit board according to claim 2, characterized in that: The suction pipe (23) is fixedly connected inside the protective shell (1).

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