PCB photosensitive wet film brushing device

Abstract

The utility model relates to the field of PCB photosensitive wet film brushing, and discloses a PCB photosensitive wet film brushing device which comprises a processing box and two fixing rods, the top of the processing box communicates with two connecting pipes, the two connecting pipes are symmetrically distributed with the processing box as the axis, a brushing roller is rotationally installed at the bottom end of the processing box, and the two fixing rods are connected with the processing box. A connecting frame is rotationally connected to the tops of the two fixing rods, an adjusting rod is slidably mounted at the bottom end of the connecting frame, a sliding groove is formed in the inner wall of the adjusting rod, and a connecting block is slidably connected to the inner wall of the sliding groove; the adjusting rod is installed at the upper end of the machining box, the inner wall of the adjusting rod is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a connecting block, a fixing rod is installed at one end of the connecting block, and the top of the fixing rod is rotatably connected with a connecting frame, so that the distance between the fixing frame and the machining box is adjusted by means of the fixing rod and the adjusting rod; and the distance between the brushing roller at the bottom end of the processing box and the PCB can be conveniently controlled.

Description

Technical Field

[0001] The present application relates to the field of photosensitive wet film brush coating of PCB boards, and in particular to a photosensitive wet film brush coating device for PCB boards. Background Art

[0002] Photosensitive wet film is a film material commonly used to make the photoresist layer of circuit boards. When making photosensitive wet film, the photosensitive wet film is covered on the PCB board to be made, and exposed and developed under light conditions to produce the required photolithography pattern. The photosensitive wet film is heated to solidify and bond to the surface of the substrate, and etching or chemical processing and other processes are carried out to remove the uncured part, leaving the required photolithography pattern, and the photoresist layer of the circuit board is produced. The main characteristics of photosensitive wet film are short development time, high resolution, good viscosity, good process stability and surface flatness, and can produce high-precision photolithography patterns. When conventional photosensitive wet film is brushed, the processing box is moved with the help of an adjustment mechanism, and the top of the processing box is connected with a connecting pipe, and the processing box is connected to the photosensitive wet film liquid source with the help of the connecting pipe. The bottom of the processing box is rotatably connected with a brush roller, and the photosensitive wet film is brushed on the surface of the PCB board with the help of the brush roller.

[0003] With respect to the above-mentioned related technologies, the inventors believe that when a conventional brush coating structure is used to process a PCB board, due to the different thicknesses of different PCB boards, it is easy for the brush coating structure to have difficulty in contacting the surface of the PCB board during processing, thereby affecting the processing effect of the brush coating structure on the PCB board.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that a brush coating structure is difficult to process PCB boards of different thicknesses, the present application provides a PCB board photosensitive wet film brush coating device.

[0006] The present application provides a PCB board photosensitive wet film brush coating device adopts the following technical solution:

[0007] A PCB board photosensitive wet film brush coating device comprises a processing box and two fixed rods, the top of the processing box is connected with two connecting pipes, the two connecting pipes are symmetrically distributed with the processing box as the axis, a brush coating roller is rotatably installed at the bottom end of the processing box, the tops of the two fixed rods are rotatably connected with a connecting frame, the bottom end of the connecting frame is slidably installed with an adjusting rod, the inner wall of the adjusting rod is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a connecting block, the bottom end of the adjusting rod is rotatably installed with the top of the processing box, the two fixed rods are symmetrically distributed with the processing box as the axis, and one end of the connecting block is fixedly connected to the surface of the fixed rod.

[0008] Preferably, a slider is rotatably mounted on the bottom end of the fixed rod, a threaded rod is threadedly connected to the inner wall of the slider, a support frame is rotatably mounted on one end of the threaded rod, one end of the support frame is welded to the surface of the processing box, one end of the threaded rod is fixedly connected to the motor by means of a transmission disk, and the surface of the slider is slidably mounted on the support frame and the inner wall of the processing box.

[0009] Preferably, two telescopic rods are fixedly connected to the top of the processing box, the two telescopic rods are symmetrically distributed with the processing box as the axis, and the tops of the telescopic rods are fixedly mounted to the bottom end of the connecting frame.

[0010] Preferably, the surface of the processing box is rotatably connected to a rotating plate, the size of the inner wall of the rotating plate is compatible with the size of the processing box surface, and the inner wall of the rotating plate is rotatably installed with an auxiliary roller, and the bottom end of the auxiliary roller is slidably connected to the surface of the brush roller.

[0011] Preferably, a fixing frame is fixedly installed on the top of the rotating plate, the surface of the fixing frame is slidably connected to the inner wall of the processing box, and a spring is fixedly installed on the surface of the fixing frame, and both ends of the spring are respectively fixedly connected to the processing box and one end of the rotating plate.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. The adjusting rod is installed at the upper end of the processing box, the inner wall of the adjusting rod is provided with a slide groove, the inner wall of the slide groove is slidably connected with a connecting block, one end of the connecting block is installed with a fixing rod, and the top of the fixing rod is rotatably connected with a connecting frame, so as to adjust the distance between the fixing frame and the processing box with the help of the fixing rod and the adjusting rod, and conveniently control the distance between the brush roller at the bottom end of the processing box and the PCB board, the bottom end of the fixing rod is rotatably connected with a sliding block, the surface of the sliding block is slidably installed with a supporting frame, and the inner wall of the sliding block is threadedly connected with a threaded rod, and one end of the threaded rod is installed with a motor with the help of a transmission disk, so as to control the rotation of the threaded rod with the help of the motor, drive the sliding block to slide on the inner wall of the supporting frame, so as to adjust the distance between the connecting frame and the processing box, two telescopic rods are installed on the top of the processing box, and the top of the telescopic rod is fixedly connected with the bottom end of the connecting frame, so as to limit the moving position of the processing box with the help of the telescopic rod, and avoid the angular deviation of the processing box, which affects the use effect of the brush roller; compared with the prior art, it is convenient to process PCB boards of different thicknesses, and effectively improves the processing effect of the brush coating device;

[0014] 2. A rotating plate can also be installed on the surface of the processing box. The bottom end of the rotating plate is rotatably connected to an auxiliary roller. The bottom end of the auxiliary roller is slidably installed with the top of the brush roller, so that the surface of the brush roller can be squeezed with the help of the auxiliary roller to avoid too much photosensitive wet film liquid on the surface of the brush roller, which causes the photosensitive wet film liquid to drip around the PCB board during brushing. A fixed frame is installed on the top of the rotating plate. The surface of the fixed frame is slidably connected to the inner wall of the processing box, and a spring is installed on the surface of the fixed frame to pull one end of the rotating plate with the help of the spring, so as to keep the auxiliary roller at the bottom end of the rotating plate in contact with the surface of the brush roller, effectively improving the use effect of the brush roller; effectively avoiding the photosensitive wet film liquid on the surface of the brush roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a PCB board photosensitive wet film brush coating device according to an embodiment of the application;

[0016] Figure 2 is a schematic diagram of the connecting frame structure of an embodiment of the application;

[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the structure at location A of an embodiment of the application.

[0019] Explanation of the accompanying drawings: 1. Processing box; 2. Connecting pipe; 3. Brush roller; 4. Fixed rod; 5. Connecting frame; 6. Adjusting rod; 7. Slide groove; 8. Connecting block; 9. Slider; 10. Threaded rod; 11. Motor; 12. Support frame; 13. Telescopic rod; 14. Rotating plate; 15. Auxiliary roller; 16. Spring; 17. Fixed frame. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The present application embodiment discloses a PCB board photosensitive wet film brush coating device, referring to Figure 1 - Figure 2The top of the processing box 1 is provided with a connecting pipe 2, and the processing box 1 is connected with the photosensitive wet film liquid source by means of the connecting pipe 2. The bottom end of the processing box 1 is rotatably connected with the brush roller 3, and the photosensitive wet film is brushed on the surface of the PCB board by means of the brush roller 3, thereby effectively improving the processing effect of the brush coating device.

[0022] Reference Figure 1 - Figure 2 The bottom end of the fixed rod 4 is rotatably connected to a slider 9, a support frame 12 is slidably installed on the surface of the slider 9, and a threaded rod 10 is threadedly connected to the inner wall of the slider 9. A motor 11 is installed at one end of the threaded rod 10 with the help of a transmission disk. The motor 11 is used to control the rotation of the threaded rod 10, driving the slider 9 to slide between the support frame 12 and the inner wall of the processing box 1, so that the adjusting rod 6 at one end of the slider 9 is rotated, thereby adjusting the distance between the connecting frame 5 and the processing box 1, which is more convenient when in use. Two telescopic rods 13 are installed on the top of the processing box 1, and the top of the telescopic rod 13 is fixedly connected to the bottom end of the connecting frame 5. The moving position of the processing box 1 is limited by the telescopic rod 13, which avoids the angular deviation of the processing box 1 and affects the use effect of the brush roller 3.

[0023] Reference Figure 3 - Figure 4 A rotating plate 14 is installed on the surface of the processing box 1, and an auxiliary roller 15 is rotatably connected to the bottom end of the rotating plate 14. The bottom end of the auxiliary roller 15 is slidably installed on the top of the brush roller 3, and the surface of the brush roller 3 is squeezed with the help of the auxiliary roller 15 to avoid too much photosensitive wet film liquid on the surface of the brush roller 3, which causes the photosensitive wet film liquid to drip around the PCB board during brushing, thereby avoiding affecting the processing effect of the PCB board. A fixing frame 17 is installed on the top of the rotating plate 14, and the surface of the fixing frame 17 is slidably connected to the inner wall of the processing box 1, and a spring 16 is installed on the surface of the fixing frame 17. The spring 16 is used to pull one end of the rotating plate 14, so that the auxiliary roller 15 at the bottom end of the rotating plate 14 is kept in contact with the surface of the brush roller 3, effectively improving the use effect of the brush roller 3.

[0024] The implementation principle of a PCB board photosensitive wet film brush coating device in the embodiment of the present application is as follows: by installing the adjusting rod 6 on the upper end of the processing box 1, the inner wall of the adjusting rod 6 is provided with a slide groove 7, the inner wall of the slide groove 7 is slidably connected with a connecting block 8, one end of the connecting block 8 is installed with a fixing rod 4, and the top of the fixing rod 4 is rotatably connected with a connecting frame 5, so that the distance between the fixing frame 17 and the processing box 1 can be adjusted by means of the fixing rod 4 and the adjusting rod 6, so as to conveniently control the distance between the brush coating roller 3 at the bottom end of the processing box 1 and the PCB board, the bottom end of the fixing rod 4 is rotatably connected with a slider 9, and the surface of the slider 9 is slidably arranged A support frame 12 is installed, and a threaded rod 10 is threadedly connected to the inner wall of the slider 9. A motor 11 is installed at one end of the threaded rod 10 with the help of a transmission disk, so that the motor 11 can control the rotation of the threaded rod 10 to drive the slider 9 to slide on the inner wall of the support frame 12, thereby adjusting the distance between the connecting frame 5 and the processing box 1. Two telescopic rods 13 are installed on the top of the processing box 1, and the top of the telescopic rod 13 is fixedly connected to the bottom end of the connecting frame 5, so that the moving position of the processing box 1 can be limited by the telescopic rod 13, thereby avoiding the angular deviation of the processing box 1 and affecting the use effect of the brush roller 3.

[0025] A rotating plate 14 can also be installed on the surface of the processing box 1. The bottom end of the rotating plate 14 is rotatably connected to an auxiliary roller 15. The bottom end of the auxiliary roller 15 is slidably installed on the top of the brush roller 3, so that the surface of the brush roller 3 can be squeezed with the help of the auxiliary roller 15 to avoid a large amount of photosensitive wet film liquid on the surface of the brush roller 3, which causes the photosensitive wet film liquid to drip around the PCB board during brushing. A fixed frame 17 is installed on the top of the rotating plate 14. The surface of the fixed frame 17 is slidably connected to the inner wall of the processing box 1, and a spring 16 is installed on the surface of the fixed frame 17, so that one end of the rotating plate 14 can be pulled with the help of the spring 16, so as to keep the auxiliary roller 15 at the bottom end of the rotating plate 14 in contact with the surface of the brush roller 3, effectively improving the use effect of the brush roller 3.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A PCB photosensitive wet film brush coating device, comprising a processing box (1) and two fixing rods (4), characterized in that: The top of the processing box (1) is connected to two connecting pipes (2), and the two connecting pipes (2) are symmetrically distributed with the processing box (1) as an axis. A brush roller (3) is rotatably installed at the bottom end of the processing box (1). The tops of the two fixed rods (4) are rotatably connected to a connecting frame (5), and an adjusting rod (6) is slidably installed at the bottom end of the connecting frame (5). The inner wall of the adjusting rod (6) is provided with a sliding groove (7), and the inner wall of the sliding groove (7) is slidably connected to a connecting block (8).

2. A PCB board photosensitive wet film brush coating device according to claim 1, characterized in that: The bottom end of the adjusting rod (6) is rotatably mounted on the top of the processing box (1), the two fixing rods (4) are symmetrically distributed with the processing box (1) as the axis, and one end of the connecting block (8) is fixedly connected to the surface of the fixing rod (4).

3. A PCB board photosensitive wet film brush coating device according to claim 1, characterized in that: A slider (9) is rotatably mounted on the bottom end of the fixed rod (4); a threaded rod (10) is threadedly connected to the inner wall of the slider (9); a support frame (12) is rotatably mounted on one end of the threaded rod (10); one end of the support frame (12) is welded to the surface of the processing box (1); one end of the threaded rod (10) is fixedly connected to a motor (11) by means of a transmission disk; and the surface of the slider (9) is slidably mounted on the support frame (12) and the inner wall of the processing box (1).

4. A PCB photosensitive wet film brush coating device according to claim 1, characterized in that: Two telescopic rods (13) are fixedly connected to the top of the processing box (1), the two telescopic rods (13) are symmetrically distributed with the processing box (1) as an axis, and the tops of the telescopic rods (13) are fixedly mounted to the bottom of the connecting frame (5).

5. A PCB photosensitive wet film brush coating device according to claim 1, characterized in that: The surface of the processing box (1) is rotatably connected to a rotating plate (14), the size of the inner wall of the rotating plate (14) is compatible with the size of the surface of the processing box (1), and the inner wall of the rotating plate (14) is rotatably mounted with an auxiliary roller (15), the bottom end of the auxiliary roller (15) is slidably connected to the surface of the brush roller (3).

6. A PCB board photosensitive wet film brush coating device according to claim 5, characterized in that: A fixing frame (17) is fixedly mounted on the top of the rotating plate (14), the surface of the fixing frame (17) is slidably connected to the inner wall of the processing box (1), and a spring (16) is fixedly mounted on the surface of the fixing frame (17), the two ends of the spring (16) are respectively fixedly connected to the processing box (1) and one end of the rotating plate (14).

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