A cleaning mechanism for PCB films

Abstract

The utility model discloses a kind of cleaning mechanism for PCB film, it includes box, the box is provided with feed inlet and discharge port, the inside fixed connection of the box has two supports, two The rotation is connected with lower guide roller of support, the upper end sliding connection of two The support has telescopic stand, the rotation is connected with upper guide roller of telescopic stand, the rotation is connected with adjusting screw of telescopic stand, the adjusting screw is connected with support thread, the inside of the box is provided with brush cleaning device, the inside fixed connection of the box has high-pressure nozzle, the inside fixed connection of the box has adsorption plate, the brush cleaning device includes first motor, two-way screw rod, sliding block and brush roller, the first motor is fixedly connected with box. By the above structure, surface adhering particulate and impurity are removed using brush cleaning device, and residual impurity is removed using high-pressure airflow and adsorption plate, realize depth cleaning, improve cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of PCB film processing technology, specifically to a cleaning mechanism for PCB films. Background Technology

[0002] PCB film is a functional thin film applied to the surface of a printed circuit board (PCB). It serves to protect the circuitry, prevent oxidation, provide insulation, and enhance solderability. Common types include dry film, solder resist, and cover film. Contaminants on the PCB film surface can directly affect the adhesion between the film and the substrate, the precision of subsequent processing (such as photolithography and etching), and the electrical performance and reliability of the final product. They can even lead to quality problems such as short circuits and poor soldering.

[0003] Existing technologies often employ brush cleaning or high-pressure rinsing to remove contaminants from the surface of PCB films. However, if the impurities are not removed promptly after cleaning, they may re-adhere to the film surface as the brush rolls, or the cleaned PCB film surface may be re-contaminated by dust in the air, resulting in incomplete cleaning and affecting the quality of subsequent processing. Summary of the Invention

[0004] This invention provides a cleaning mechanism for PCB films, which can remove particulate matter and impurities attached to the surface using a brush cleaning device, and remove residual impurities using high-pressure airflow and an adsorption plate, thereby achieving deep cleaning and improving the cleaning effect.

[0005] To achieve the above objectives, a cleaning mechanism for PCB film is provided, comprising a housing with an inlet and an outlet. Two supports are fixedly connected inside the housing, and a lower guide roller is rotatably connected to each support. A telescopic frame is slidably connected to the upper ends of the two supports, and an upper guide roller is rotatably connected to the telescopic frame. An adjusting screw is rotatably connected to the telescopic frame and threadedly connected to the supports. A brush cleaning device is installed inside the housing, a high-pressure nozzle is fixedly connected inside the housing, and an adsorption plate is fixedly connected inside the housing. The inlet and outlet facilitate the entry and exit of the PCB film; the supports support the guide roller; the lower and upper guide rollers guide the PCB film; the telescopic frame adjusts the height of the upper guide roller; the adjusting screw moves the telescopic frame; the brush cleaning device cleans the PCB film; the high-pressure nozzle cleans the PCB film; and the adsorption plate adsorbs impurities.

[0006] According to the aforementioned cleaning mechanism for PCB film, the brush cleaning device includes a first motor, a bidirectional screw, a slider, and a brush roller, wherein the first motor is fixedly connected to a housing. The first motor is provided to facilitate driving the bidirectional screw to rotate; the bidirectional screw is provided to facilitate moving the slider; the slider is provided to facilitate moving the brush roller; and the brush roller is provided to facilitate cleaning the film material.

[0007] According to the cleaning mechanism for PCB film, the bidirectional screw is rotatably connected to the housing, and the output end of the first motor is fixedly connected to the bidirectional screw.

[0008] According to the cleaning mechanism for PCB film, the two ends of the bidirectional screw are threadedly connected to two sliders, and the brush roller is rotatably connected to the sliders.

[0009] According to the cleaning mechanism for PCB film, a second motor is fixedly connected inside the slider, and the output end of the second motor is fixedly connected to the brush roller. The second motor is provided to facilitate the rotation of the brush roller.

[0010] According to the cleaning mechanism for PCB film, a vacuum pump is fixedly connected to the outer wall of the housing. The vacuum pump is provided to facilitate air extraction.

[0011] According to the cleaning mechanism for PCB film, the adsorption plate is provided with uniformly distributed fine holes, which are connected to a vacuum pump via pipes. The fine holes facilitate the creation of a negative pressure inside the adsorption plate to draw in air.

[0012] According to the cleaning mechanism for PCB film, the nozzle of the high-pressure nozzle is at an angle to the inner wall of the housing.

[0013] The beneficial effects of this invention are: using a brush cleaning device to remove particles and impurities attached to the surface, and using high-pressure airflow and an adsorption plate to remove residual impurities, thereby achieving deep cleaning and improving the cleaning effect.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a three-dimensional structural diagram of a cleaning mechanism for PCB film according to the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the housing of a cleaning mechanism for PCB film according to the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the bracket of a PCB film cleaning mechanism according to the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of a brush cleaning device for a PCB film cleaning mechanism according to the present invention.

[0020] Legend:

[0021] 1. Box body; 2. Inlet; 3. Outlet; 4. Support; 5. Lower guide roller; 6. Telescopic frame; 7. Upper guide roller; 8. Adjusting screw; 9. Brush cleaning device; 901. First motor; 902. Bidirectional screw; 903. Slider; 904. Brush roller; 10. High-pressure nozzle; 11. Adsorption plate; 12. Second motor; 13. Vacuum pump; 14. Fine hole. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figures 1 to 4 This utility model discloses a cleaning mechanism for PCB film, comprising a housing 1 with an inlet 2 and an outlet 3. Two supports 4 are fixedly connected inside the housing 1, and lower guide rollers 5 are rotatably connected to the two supports 4. A telescopic frame 6 is slidably connected to the upper end of the two supports 4, and an upper guide roller 7 is rotatably connected to the telescopic frame 6. An adjusting screw 8 is rotatably connected to the telescopic frame 6 and threadedly connected to the supports 4. Rotating the adjusting screw 8 drives the telescopic frame 6 to rise and fall, achieving precise adjustment of the guide roller spacing. This ensures that the film material is neither too loose, causing deviation, nor too tight, causing damage during transport. A brush cleaning device 9 is installed inside the housing 1, a high-pressure nozzle 10 is fixedly connected inside the housing 1, and an adsorption plate 11 is fixedly connected inside the housing 1.

[0024] The brush cleaning device 9 includes a first motor 901, a bidirectional screw 902, a slider 903, and a brush roller 904. The first motor 901 is fixedly connected to the housing 1, and the bidirectional screw 902 is rotatably connected to the housing 1. The output end of the first motor 901 is fixedly connected to the bidirectional screw 902, and the two ends of the bidirectional screw 902 are threadedly connected to two sliders 903. The first motor 901 provides power to the bidirectional screw 902, driving it to rotate in both directions. The threads at both ends of the bidirectional screw 902 are in opposite directions, which can drive the two sliders 903 to move closer or further away synchronously, thereby adjusting the distance between the two brush rollers 904 to meet the cleaning needs of PCB films of different widths.

[0025] The brush roller 904 is rotatably connected to the slider 903. A second motor 12 is fixedly connected inside the slider 903, and the output end of the second motor 12 is fixedly connected to the brush roller 904. This enhances the friction between the bristles and the film surface, improving the ability to remove stubborn impurities. At the same time, the independent drive design ensures that the rotation speed of each brush roller 904 is stable, guaranteeing uniform cleaning force.

[0026] A vacuum pump 13 is fixedly connected to the outer wall of the housing 1. The adsorption plate 11 is provided with uniformly distributed fine holes 14. The uniform distribution of the fine holes 14 can ensure that the adsorption force is uniformly applied to the surface of the film material, preventing the residue of impurities due to insufficient local adsorption force, or the deformation of the film material due to excessive adsorption force. The fine holes 14 are connected to the vacuum pump 13 through pipes. When the vacuum pump 13 is working, it draws out the air between the adsorption plate 11 and the film material, so that a negative pressure is formed at the fine holes 14. The adsorption plate 11 adsorbs the tiny dust particles remaining on the surface of the PCB film and the suspended impurities after high-pressure spraying, avoiding secondary pollution. The nozzle of the high-pressure nozzle 10 is at an angle to the inner wall of the housing 1, and impacts the surface of the PCB film at an inclined angle. On the one hand, it can wash away the small impurities remaining after brush cleaning. On the other hand, the inclined spray can reduce the direct impact of airflow on the film material, avoid the deformation of the film material due to excessive force, and ensure that the cleaning range covers the edge area of ​​the film material surface.

[0027] Working Principle: During use, based on the thickness of the PCB film, rotating the adjusting screw 8 moves the telescopic frame 6, causing the upper guide roller 7 to rise and fall, adjusting the distance between the upper guide roller 7 and the lower guide roller 5 to ensure the film material can pass smoothly. Then, the first motor 901 outputs power to drive the bidirectional screw 902 to rotate, causing the sliders 903 at both ends to move towards each other, moving the brush rollers 904 to adjust the distance between the two brush rollers 904 so that they contact the surface of the film material. Then, the PCB film enters the box 1 from the inlet 2 and, guided by the lower guide roller 5 and the upper guide roller 7, is conveyed to the outlet 3 at a stable speed. The second motor 12 outputs power... The brush roller 904 is driven to rotate. When the PCB film passes between the brush rollers 904, the rotating bristles rub against the surface of the film to remove particles, dust and other impurities. Then the PCB film continues to be conveyed to the high-pressure nozzle 10 area. The high-pressure nozzle 10 sprays high-pressure airflow to wash away the fine impurities remaining after brush cleaning, ensuring that there are no dirt attached to the surface. Then the PCB film is conveyed to the adsorption plate 11 area. The vacuum pump 13 uses the fine holes 14 of the adsorption plate 11 to generate negative pressure, adsorbing the fine dust and suspended impurities on the surface of the film to achieve deep cleaning. The cleaned PCB film is guided by the guide roller and output from the discharge port 3.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cleaning mechanism for PCB film, characterized in that, The device includes a housing (1), which has an inlet (2) and an outlet (3). The housing (1) is fixedly connected to two supports (4). The two supports (4) are rotatably connected to a lower guide roller (5). The upper ends of the two supports (4) are slidably connected to a telescopic frame (6). The telescopic frame (6) is rotatably connected to an upper guide roller (7). The telescopic frame (6) is rotatably connected to an adjusting screw (8). The adjusting screw (8) is threadedly connected to the support (4). The housing (1) is equipped with a brush cleaning device (9). The housing (1) is fixedly connected to a high-pressure nozzle (10). The housing (1) is fixedly connected to an adsorption plate (11).

2. The cleaning mechanism for PCB film according to claim 1, characterized in that, The brush cleaning device (9) includes a first motor (901), a bidirectional screw (902), a slider (903), and a brush roller (904), wherein the first motor (901) is fixedly connected to the housing (1).

3. A cleaning mechanism for PCB film according to claim 2, characterized in that, The bidirectional screw (902) is rotatably connected to the housing (1), and the output end of the first motor (901) is fixedly connected to the bidirectional screw (902).

4. A cleaning mechanism for PCB film according to claim 3, characterized in that, The two ends of the bidirectional screw (902) are threadedly connected to two sliders (903), and the brush roller (904) is rotatably connected to the sliders (903).

5. A cleaning mechanism for PCB film according to claim 4, characterized in that, The slider (903) is internally fixedly connected to a second motor (12), and the output end of the second motor (12) is fixedly connected to the brush roller (904).

6. A cleaning mechanism for PCB film according to claim 1, characterized in that, A vacuum pump (13) is fixedly connected to the outer wall of the box (1).

7. A cleaning mechanism for PCB film according to claim 6, characterized in that, The adsorption plate (11) is provided with uniformly distributed fine holes (14), which are connected to the vacuum pump (13) through pipes.

8. A cleaning mechanism for PCB film according to claim 1, characterized in that, The nozzle of the high-pressure nozzle (10) is at an angle to the inner wall of the housing (1).

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