Adjustable air knife for circuit board cleaning machine

Abstract

The utility model relates to the technical field of circuit board cleaning machine air knives, and discloses an adjustable air knife for a circuit board cleaning machine, which comprises an air knife main body, an air knife straight groove penetrating through the air knife main body is arranged in the air knife main body, the lower surface of the air knife main body is fixedly connected with an air pipe, and the air pipe is provided with an air inlet. A plurality of air outlets are formed in the air knife body, side sealing plates are fixedly connected to the two sides of the air knife body, and connecting assemblies are arranged on the side walls of the side sealing plates and used for being connected with a circuit board cleaning machine. According to the utility model, airflow is blown out from the plurality of air outlets in the lower surface of the air knife main body, and the plurality of air outlets are uniformly distributed along the lower surface of the air knife main body, so that the airflow can uniformly cover the corresponding area of the circuit board, thereby forming uniform and stable airflow beams, and ensuring that each part of the circuit board can reach an ideal dry and clean state; and subsequent circuit board processing and use are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of air knife technology for circuit board cleaning machines, and in particular to an adjustable air knife for circuit board cleaning machines. Background Technology

[0002] A circuit board cleaning machine is a device that uses water-based solvents as cleaning agents. It is mainly used for pre-plating treatment and post-plating cleaning of electroplated parts, effectively removing various contaminants such as dust, fibers, metal and oxide debris from circuit boards without leaving any residue. Its equipped air knife generates a high-speed, uniform airflow to dry the circuit boards after cleaning, quickly removing moisture and dust, improving drying efficiency and cleanliness, and ensuring the quality and performance of the circuit boards. It is widely used in the electronics industry and related fields.

[0003] Traditional circuit board cleaning machine air knives mainly consist of a circular air inlet, a wide and straight air duct, a flow divider, a gradually narrowing air duct, and a section of straight and narrow air duct. These structures work together to ensure that the airflow entering the air knife is rationally distributed and guided, thereby achieving uniform air velocity, stable air volume, and balanced air pressure, resulting in a good drying effect. Furthermore, the width of the air duct of the air knife is usually adjustable, which allows for the adjustment of air velocity, air volume, and air pressure to meet different drying needs.

[0004] Traditional circuit board cleaning machine air knives typically consist of a circular air inlet, a wide, straight air duct, a distributor plate, a gradually narrowing air duct, and a section of straight, narrow air duct. This structure limits its airflow distribution. The circular design of the air inlet results in uneven airflow distribution upon entry. The wide, straight air duct struggles to adequately rectify and stabilize the airflow during transport. While the distributor plate provides some distribution, it cannot completely guarantee uniformity across the width of the airflow. The gradually narrowing and straight, narrow air ducts cause pressure losses and velocity variations during airflow, making it difficult to achieve ideal stability in airflow velocity, volume, and direction, thus hindering the realization of uniform airflow from all directions and angles. These limitations affect the drying effect and cleanliness of the circuit boards, preventing the complete removal of moisture and impurities from the board surface, reducing production efficiency and product quality. Furthermore, incomplete drying in certain areas can negatively impact subsequent processing and performance of the circuit boards. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an adjustable air knife for the Yizong circuit board cleaning machine, which aims to improve the limitations of traditional circuit board cleaning machine air knives, which reduce production efficiency and product quality, and also affect the subsequent processing and performance of circuit boards due to insufficient local drying.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adjustable air knife for a circuit board cleaning machine includes an air knife body, an air knife groove penetrating the interior of the air knife body, an air duct fixedly connected to the lower surface of the air knife body, an air inlet in the air duct, multiple air outlets inside the air knife body, side sealing plates fixedly connected to both sides of the air knife body, and connecting components provided on the side walls of the side sealing plates for connecting to the circuit board cleaning machine.

[0008] Furthermore, the connecting assembly includes a connecting platform, which is fixedly connected to the side wall of the side sealing plate.

[0009] Furthermore, a side column is fixedly connected to the side wall of the connecting platform, and a turntable is fixedly connected to the side wall of the connecting platform.

[0010] Furthermore, a rotating shaft is rotatably connected inside the turntable, and a connecting plate is fixedly connected to the side wall of the rotating shaft.

[0011] Furthermore, a lifting plate is fixedly connected to the top of the connecting plate, and a pressing plate is fixedly connected to the bottom of the connecting plate.

[0012] Furthermore, a slip ring is slidably connected to the outer wall of the side column, and a retaining shaft is fixedly connected to the side wall of the slip ring.

[0013] Furthermore, the retaining shaft is slidably connected inside the connecting platform, and a spring is provided inside the side column.

[0014] Furthermore, one end of the spring is fixedly connected to the inside of the side post, and the other end of the spring is fixedly connected to the side wall of the slip ring.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this invention, as airflow passes through the straight groove of the air knife, it exits from multiple air outlets on the lower surface of the air knife body. These outlets are evenly distributed along the lower surface of the air knife body, ensuring that the airflow uniformly covers the corresponding area of ​​the circuit board. The side sealing plates seal both sides of the air knife body, preventing airflow leakage from the sides and ensuring that airflow only exits from the evenly distributed outlets, thus forming a uniform and stable airflow stream. This ensures that all parts of the circuit board achieve an ideal dry and clean state, which is beneficial for subsequent circuit board processing and use.

[0017] 2. In this utility model, the pressing plate will drive the connecting plate on its side wall to be stressed after being subjected to force. Finally, the air knife body is aligned with the internal hole of the cleaning machine. After the pressing plate is released, the spring pushes the slip ring to reset the slip ring and the locking shaft for fixation, achieving the effect of convenient installation. The convenient disassembly and assembly of the air knife can quickly complete the disassembly and installation, greatly reducing the downtime of the equipment and improving the overall operating efficiency of the production equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the air knife of this utility model;

[0019] Figure 2 This is a schematic diagram of the air outlet structure of the air knife of this utility model;

[0020] Figure 3 This is a schematic diagram of the side sealing plate structure of the air knife of this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the image.

[0022] Legend:

[0023] 1. Air knife body; 2. Air duct; 3. Air inlet; 4. Air outlet; 5. Air knife straight groove; 6. Side sealing plate; 7. Connecting platform; 8. Side column; 9. Turntable; 10. Rotating shaft; 11. Connecting plate; 12. Press plate; 13. Lifting plate; 14. Slip ring; 15. Spring; 16. Locking shaft. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-2 One embodiment provided by this utility model:

[0026] An adjustable air knife for a circuit board cleaning machine includes an air knife body 1, an air knife groove 5 that runs through the interior of the air knife body 1, an air duct 2 fixedly connected to the lower surface of the air knife body 1, an air inlet 3 on the air duct 2, multiple air outlets 4 inside the air knife body 1, and side sealing plates 6 fixedly connected to both sides of the air knife body 1. The side walls of the side sealing plates 6 are provided with connecting components for connecting to the circuit board cleaning machine.

[0027] Specifically, during operation, an external air source steadily delivers airflow into the air knife body 1 through the air inlet 3 of the duct 2. Upon entry, the airflow first reaches the air knife groove 5, which runs through the interior of the air knife body 1. This groove, with its carefully designed shape and precise dimensions, guides the airflow to diffuse evenly within the groove, ensuring a stable and continuous flow. This effectively prevents localized turbulence or stagnation during airflow transmission. As the airflow passes through the groove 5, it is blown outwards from multiple air outlets 4 located on the lower surface of the air knife body 1. These outlets 4 are evenly distributed along the lower surface of the air knife body 1, ensuring that the airflow evenly covers the corresponding area of ​​the circuit board. The side sealing plate 6 plays a crucial role in sealing both sides of the air knife body 1, effectively preventing airflow leakage from the sides and ensuring that the airflow only... The airflow can only be blown out from the evenly distributed air outlets 4, thus successfully forming a uniform and stable airflow. Furthermore, in actual operation, by precisely adjusting the pressure, flow rate, and other relevant parameters of the external air source, the uniformity of the airflow from outlets 4 can be further optimized. This ensures that the airflow can accurately and reliably act on the circuit board surface under various working conditions. With this uniform, stable, and adjustable airflow, residual moisture and impurities after cleaning the circuit board can be evenly removed, greatly improving the drying uniformity of the circuit board and significantly enhancing the overall cleaning quality. This ensures that all parts of the circuit board achieve ideal drying and cleaning conditions, providing a good foundation for subsequent circuit board processing. It also strongly promotes the smooth progress of subsequent circuit board assembly, testing, and other uses, improving the overall efficiency and product quality of circuit board production and reducing the product defect rate caused by incomplete drying and cleaning.

[0028] Reference Figure 3 and Figure 4 The connecting assembly includes a connecting platform 7, which is fixedly connected to the side wall of the side sealing plate 6. A side column 8 is fixedly connected to the side wall of the connecting platform 7. A turntable 9 is fixedly connected to the side wall of the connecting platform 7. A rotating shaft 10 is rotatably connected inside the turntable 9. A connecting plate 11 is fixedly connected to the side wall of the rotating shaft 10. A lifting plate 13 is fixedly connected to the top of the connecting plate 11. A pressing plate 12 is fixedly connected to the bottom of the connecting plate 11. A slip ring 14 is slidably connected to the outer wall of the side column 8. A retaining shaft 16 is fixedly connected to the side wall of the slip ring 14. The retaining shaft 16 is slidably connected inside the connecting platform 7. A spring 15 is provided inside the side column 8. One end of the spring 15 is fixedly connected to the inside of the side column 8, and the other end of the spring 15 is fixedly connected to the side wall of the slip ring 14.

[0029] Specifically, when there is a need to install the air knife body 1 into the circuit board cleaning machine, the operator manually presses the button 12. After receiving the pressing pressure, the button 12 will cause the connecting plate 11 connected to its side wall to be stressed. After the connecting plate 11 is stressed, it will further cause the rotating shaft 10 at its bottom to start rotating in the turntable 9. As the rotating shaft 10 rotates, the angle of the connecting plate 11 gradually changes. When the angle of the connecting plate 11 is changed to a specific state, it will cause the button 12 to apply a pushing force to the slip ring 14. Under the stress, the slip ring 14 will be displaced to the left along the outer wall of the side column 8, and the spring 15 will be squeezed during the displacement. At this time, the retaining shaft 16 connected to the slip ring 14 will also be displaced along with the slip ring 14. During the displacement of the retaining shaft 16 In this process, the air knife body 1 can be easily aligned with the hole inside the cleaning machine. Then, when the operator releases the button 12, the spring 15, which was originally compressed, will push the slip ring 14 with its own elastic restoring force, so that the slip ring 14 and the retaining shaft 16 will be reset together, thereby fixing the air knife body 1 and achieving the effect of convenient installation. This convenient air knife disassembly and assembly design allows the air knife to be quickly disassembled and installed when it needs to be replaced, repaired or adjusted. Compared with the traditional complicated disassembly and assembly method, it greatly shortens the downtime of the equipment. Due to the significant reduction in downtime, the production equipment can be in operation for a longer period of time, thereby improving the overall operating efficiency of the production equipment, increasing product output, and reducing production delays and cost increases caused by equipment downtime.

[0030] Working Principle: During operation, an external air source delivers airflow into the air knife body 1 through the air inlet 3 of the air duct 2. The airflow first enters the air knife straight groove 5, which penetrates the interior of the air knife body 1 and has a specific shape and size design, guiding the airflow to diffuse evenly and flow stably within it, effectively preventing localized turbulence or stagnation. As the airflow passes through the air knife straight groove 5, it is blown out from multiple air outlets 4 on the lower surface of the air knife body 1. These multiple air outlets 4 are evenly distributed along the lower surface of the air knife body 1, ensuring that the airflow evenly covers the corresponding area of ​​the circuit board. The side sealing plate 6 seals both sides of the air knife body 1, preventing airflow leakage from the sides and ensuring that the airflow can only be blown out from the evenly distributed air outlets 4, thus forming a uniform and stable airflow stream. Furthermore, by adjusting parameters such as the pressure and flow rate of the external air source, the uniformity of the airflow blown from the air outlet 4 can be further optimized, ensuring that it can accurately act on the surface of the circuit board under different working conditions. This uniformly removes moisture and impurities from the cleaned circuit board, greatly improving the drying uniformity and overall cleaning quality of the circuit board. It ensures that all parts of the circuit board achieve an ideal drying and cleaning state, which is beneficial for subsequent processing and use. When the air knife body 1 needs to be installed in the circuit board cleaning machine, pressing the button 12 will cause the connecting plate 11 on its side wall to be stressed, further... The rotating shaft 10 at its bottom rotates in the turntable 9. After the angle of the connecting plate 11 is changed, the pressing plate 12 can be driven to push the slip ring 14. After the slip ring 14 is subjected to force, it moves to the left on the outer wall of the side column 8 and squeezes the spring 15. At this time, the retaining shaft 16 also moves with the slip ring 14, so that the air knife body 1 can be aligned with the internal hole of the cleaning machine. Then, after releasing the pressing plate 12, the spring 15 pushes the slip ring 14 to reset the slip ring 14 and the retaining shaft 16 for fixation, achieving the effect of convenient installation. The convenient disassembly and assembly of the air knife can quickly complete the disassembly and installation, greatly reducing the downtime of the equipment and improving the overall operating efficiency of the production equipment.

[0031] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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. An adjustable air knife for a circuit board cleaning machine, comprising an air knife body (1), characterized in that: The air knife body (1) has a straight air knife groove (5) that runs through the interior of the air knife body (1). An air duct (2) is fixedly connected to the lower surface of the air knife body (1). An air inlet (3) is provided in the air duct (2). Multiple air outlets (4) are provided inside the air knife body (1). Side sealing plates (6) are fixedly connected to both sides of the air knife body (1). A connecting component is provided on the side wall of the side sealing plate (6). The connecting component is used to connect to the circuit board cleaning machine.

2. The adjustable air knife for a circuit board cleaning machine according to claim 1, characterized in that: The connecting assembly includes a connecting platform (7), which is fixedly connected to the side wall of the side sealing plate (6).

3. The adjustable air knife for a circuit board cleaning machine according to claim 2, characterized in that: The side wall of the connecting platform (7) is fixedly connected to a side column (8), and the side wall of the connecting platform (7) is fixedly connected to a turntable (9).

4. The adjustable air knife for a circuit board cleaning machine according to claim 3, characterized in that: The turntable (9) is rotatably connected to a rotating shaft (10), and a connecting plate (11) is fixedly connected to the side wall of the rotating shaft (10).

5. The adjustable air knife for a circuit board cleaning machine according to claim 4, characterized in that: A lifting plate (13) is fixedly connected to the top of the connecting plate (11), and a pressing plate (12) is fixedly connected to the bottom of the connecting plate (11).

6. The adjustable air knife for a circuit board cleaning machine according to claim 5, characterized in that: The outer wall of the side column (8) is slidably connected to a slip ring (14), and the side wall of the slip ring (14) is fixedly connected to a retaining pin (16).

7. The adjustable air knife for a circuit board cleaning machine according to claim 6, characterized in that: The slidable pin (16) is slidably connected inside the connecting platform (7), and a spring (15) is provided inside the side column (8).

8. The adjustable air knife for a circuit board cleaning machine according to claim 7, characterized in that: One end of the spring (15) is fixedly connected to the inside of the side column (8), and the other end of the spring (15) is fixedly connected to the side wall of the slip ring (14).

Images