Photoresist coating device

Abstract

The utility model relates to the technical field of coating devices, in particular to a photoresist coating device, including a base, a U-shaped frame is installed on the top of the base, a strip movable plate is arranged inside the U-shaped frame, the top of the strip movable plate is connected to the U-shaped frame through a telescopic mechanism, a glue spray head is also installed at the bottom of the strip movable plate, a strip connecting plate is installed on one side of the strip movable plate, a gas collecting pipe is fixedly installed on the top of the strip connecting plate, one end of the gas collecting pipe is connected to an air guide pipe, the other end of the air guide pipe is fixed at the air outlet of an air pump, the air pump is fixed on the top of the U-shaped frame, an air inlet pipe is connected to the air inlet of the air pump, at least one air blowing head is installed at the bottom of the air collecting pipe, and the top of the base is also connected to a track through a plurality of support rods. The present application can transport external air to the air blowing head through the air pump and spray it at high speed onto the surface of the circuit board, clean up impurities adhering to the surface of the circuit board, and improve the quality of glue coating.

Description

Technical Field

[0001] The utility model relates to the technical field of coating devices, in particular to a photoresist coating device. Background Art

[0002] Photoresist, also known as photoresist, refers to an etching-resistant thin film material whose solubility changes when exposed to ultraviolet light, electron beam, ion beam, X-ray, etc.

[0003] In the electronics industry, the production of circuit boards generally requires spraying a layer of photoresist on the surface of the circuit board through a coating device. However, the existing coating device cannot clean the surface of the circuit board before coating the circuit board, resulting in impurities adhering to the surface of the circuit board affecting the subsequent coating of the photoresist. In addition, during use, the staff needs to fix the circuit board on the spraying table, and then use the spray head to coat the surface of the circuit board with photoresist. After the coating is completed, the staff needs to stop the machine to remove the sprayed circuit board, and then fix the new circuit board on the spraying table, and then open the spray head to spray glue, which is troublesome. To this end, we propose a photoresist coating device. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a photoresist coating device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a photoresist coating device is designed, comprising a base, a U-shaped frame is installed on the top of the base, a strip movable plate is arranged inside the U-shaped frame, the top of the strip movable plate is connected to the U-shaped frame through a telescopic mechanism, and a glue spray head is also installed at the bottom of the strip movable plate;

[0006] A strip connecting plate is installed on one side of the strip moving plate, an air collecting pipe is fixedly installed on the top of the strip connecting plate, one end of the air collecting pipe is connected to an air guide pipe, the other end of the air guide pipe is fixed to the air outlet of the air pump, the air pump is fixed on the top of the U-shaped frame, the air inlet of the air pump is connected to an air inlet pipe, and at least one air blowing head is installed at the bottom of the air collecting pipe;

[0007] The top of the base is also connected to a track through a plurality of support rods, and one side of the track passes under the U-shaped frame, a flexible conveyor chain is arranged inside the track, the top of the flexible conveyor chain extends above the track, and a conveyor belt is installed on the top of the flexible conveyor chain, and a plurality of limiting frames are equidistantly installed on the top of the conveyor belt, and a circuit board is arranged inside the limiting frame;

[0008] Fixed plates are installed at both ends of the bottom of the track, and sprockets are rotatably connected to the tops of the fixed plates. Through grooves are opened on the sides of both ends of the inner part of the track. The side of each sprocket passes through the through groove and engages with the flexible conveyor chain. A driving motor is installed at the bottom of one of the fixed plates, and the output shaft of the driving motor is connected to the corresponding sprocket.

[0009] Preferably, both ends of the strip-shaped movable plate are provided with limiting sleeves, and each limiting sleeve is slidably sleeved on the side surface of the U-shaped frame.

[0010] Preferably, a filter cover is installed at one end of the air inlet pipe away from the air pump.

[0011] Preferably, the air blowing head is located at one side of the glue spraying head, and both the glue spraying head and the air blowing head are located above the circuit board.

[0012] Preferably, a plurality of fixed suction cups are provided inside each limiting frame.

[0013] Preferably, the air guide tube is a flexible hose.

[0014] Preferably, a control box is installed on the top of the base, and a controller inside the control box is connected to the air pump, the glue spray head and the drive motor through wires, and the controller is also connected to the telescopic mechanism through wires.

[0015] The design scheme proposed by the utility model has the following beneficial effects during application:

[0016] 1. The air pump can deliver external air to the air blowing head and spray it onto the surface of the circuit board at high speed to clean the impurities adhering to the surface of the circuit board and improve the quality of glue coating.

[0017] 2. By placing the circuit board in the limiting frame and driving the conveyor belt 2 to transport the circuit board through the driving motor, while spraying glue on the circuit board, the staff can put other circuit boards to be sprayed with glue into the corresponding limiting frame without stopping the machine for loading and unloading, thereby improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the U-shaped frame structure of the utility model;

[0020] Figure 3 It is a front cross-sectional view of the track and flexible conveyor chain structure of the utility model.

[0021] In the figure: 1. base; 2. conveyor belt; 3. fixed suction cup; 4. limiting frame; 5. U-shaped frame; 6. blowing head; 7. strip connecting plate; 8. air guide pipe; 9. air pump; 10. filter cover; 11. telescopic mechanism; 12. strip movable plate; 13. limiting sleeve; 14. flexible conveyor chain; 15. driving motor; 16. sprocket; 17. support rod; 18. track; 19. air collecting pipe; 20. air inlet pipe; 21. glue spray head; 22. fixing plate; 23. through groove; 24. control box. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 3 A photoresist coating device includes a base 1, a control box 24 is installed on the top of the base 1, a controller is installed in the control box 24, the controller is one of a control mainboard, a host or a PLC logic controller, a U-shaped frame 5 is installed on the top of the base 1, a strip movable plate 12 is arranged inside the U-shaped frame 5, the top of the strip movable plate 12 is connected to the U-shaped frame 5 through a telescopic mechanism 11, the telescopic mechanism 11 is one of an electric push rod, a cylinder or a hydraulic rod, the telescopic mechanism 11 is connected to the controller through a wire, in actual use, the telescopic mechanism 11 can be controlled to be extended and retracted by the controller, and then the position of the strip movable plate 12 can be adjusted.

[0024] like Figure 2 As shown, a glue spray head 21 is also installed at the bottom of the strip movable plate 12. The glue spray head 21 is connected to the controller through a wire, and the glue spray head 21 is also connected to the photoresist conveying mechanism through a pipeline. In actual use, when the circuit board moves to the bottom of the glue spray head 21, the staff can control the glue spray head 21 through the controller to spray the photoresist on the surface of the circuit board to complete the glue coating process.

[0025] like Figure 1 As shown, a strip connecting plate 7 is installed on one side of the strip movable plate 12, and an air collecting pipe 19 is fixedly installed on the top of the strip connecting plate 7. One end of the air collecting pipe 19 is connected to an air guide pipe 8, and the other end of the air guide pipe 8 is fixed at the air outlet of the air pump 9. The air pump 9 is fixed on the top of the U-shaped frame 5, and an air inlet pipe 20 is connected to the air inlet of the air pump 9. At least one air blowing head 6 is installed at the bottom of the air collecting pipe 19, and the air pump 9 is connected to the controller through a wire. In actual use, the air pump 9 can transport external air to the air collecting pipe 19 through the air inlet pipe 20 and the air guide pipe 8, and blow it toward the surface of the circuit board from the air blowing head 6 to clean up impurities such as dust adhering to the circuit board.

[0026] It should be noted that a filter cover 10 is installed at one end of the air inlet pipe 20 away from the air pump 9, so that when the air pump 9 inhales air, the air will be filtered by the filter cover 10, and impurities in the air will be filtered out, thereby improving the cleaning effect of the blowing head 6.

[0027] like Figure 1 and Figure 3 As shown, the top of the base 1 is also connected to a track 18 through a plurality of support rods 17, and one side of the track 18 passes under the U-shaped frame 5, and a flexible conveyor chain 14 is provided inside the track 18, and the top of the flexible conveyor chain 14 extends to the top of the track 18, and a conveyor belt 2 is installed on the top of the flexible conveyor chain 14, and a plurality of limit frames 4 are equidistantly installed on the top of the conveyor belt 2, and a circuit board is placed inside the limit frame 4. In actual use, the staff can put the circuit board into the limit frame 4, and then transport it to the glue spraying head 21 through the conveyor belt 2 for glue spraying. In this way, during the glue spraying process, the staff can put other circuit boards into the corresponding limit frames 4 without stopping the machine.

[0028] It should be noted that the air blowing head 6 is located on one side of the glue spraying head 21, and the glue spraying head 21 and the air blowing head 6 are both located above the circuit board. In this way, the circuit board can be transported to the bottom of the air blowing head 6 and the glue spraying head 21 under the action of the conveyor belt 2, and the surface of the circuit board is cleaned by the air blowing head 6, and then glue is sprayed by the glue spraying head 21.

[0029] like Figure 1 and Figure 3 As shown, fixed plates 22 are installed at both ends of the bottom of the track 18, and the tops of the fixed plates 22 are rotatably connected to sprockets 16. Through grooves 23 are opened on the inner side surfaces of the two ends of the track 18. The sides of each sprocket 16 pass through the through grooves 23 to engage with the flexible conveyor chain 14, and a driving motor 15 is installed at the bottom of one of the fixed plates 22. The output shaft of the driving motor 15 is connected to the corresponding sprocket 16. The driving motor 15 is connected to the controller through a wire. The driving motor 15 can drive the flexible conveyor chain 14 to rotate under the action of the sprocket 16, so as to transport the circuit board placed in the limiting frame 4.

[0030] Specifically, when the utility model is in use, the staff puts the circuit board into the limiting frame 4, fixes it by adsorption through the fixed suction cup 3, and then controls the telescopic mechanism 11 to work through the controller, and the telescopic mechanism 11 pushes the strip movable plate 12 to move, so that the glue spray head 21 and the air blowing head 6 can be adjusted to the preset position. Then the controller controls the driving motor 15 to work, and the driving motor 15 drives the conveyor belt 2 to move under the action of the sprocket 16 and the flexible conveying chain 14, and moves the circuit board toward the air blowing head 6 and the glue spray head 21. At the same time, the air pump 9 is controlled to work, and the air pump 9 conveys external air to the air collecting pipe 19 through the air inlet pipe 20 and the air guide pipe 8. Finally, the air is blown to the surface of the circuit board through the air blowing head 6 to clean the impurities on the surface of the circuit board. After that, when the circuit board moves to the bottom of the glue spray head 21, the controller controls the glue spray head 21 to work, and the photoresist is evenly sprayed on the surface of the circuit board to complete the glue coating. During the glue coating process, the staff can put other circuit boards into the corresponding limiting frame 4, so that the circuit boards can be glued in turn without stopping the machine.

[0031] Furthermore, if Figure 2 As shown, both ends of the strip movable plate 12 are installed with limiting sleeves 13, and each limiting sleeve 13 is slidably sleeved on the side of the U-shaped frame 5, which can limit the strip movable plate 12 so that the strip movable plate 12 remains stable.

[0032] Furthermore, if Figure 1 As shown, a plurality of fixed suction cups 3 are provided inside each limiting frame 4, and the circuit board can be adsorbed and fixed in the limiting frame 4 through the fixed suction cups 3, and the fixation is simple.

[0033] Furthermore, if Figure 1 As shown, the air guide tube 8 is a flexible hose, so that when the height of the strip-shaped moving plate 12 is adjusted, the air guide tube 8 will not cause any obstruction.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photoresist coating device, comprising a base (1), characterized in that: A U-shaped frame (5) is installed on the top of the base (1), a strip-shaped movable plate (12) is provided inside the U-shaped frame (5), the top of the strip-shaped movable plate (12) is connected to the U-shaped frame (5) through a telescopic mechanism (11), and a glue spraying head (21) is also installed on the bottom of the strip-shaped movable plate (12); A strip connecting plate (7) is installed on one side of the strip moving plate (12), a gas collecting pipe (19) is fixedly installed on the top of the strip connecting plate (7), one end of the gas collecting pipe (19) is connected to an air guide pipe (8), the other end of the air guide pipe (8) is fixed to the air outlet of an air pump (9), the air pump (9) is fixed to the top of the U-shaped frame (5), the air inlet of the air pump (9) is connected to an air inlet pipe (20), and at least one air blowing head (6) is installed at the bottom of the gas collecting pipe (19); The top of the base (1) is also connected to a track (18) via a plurality of support rods (17), and one side of the track (18) passes through the bottom of the U-shaped frame (5). A flexible conveying chain (14) is provided inside the track (18), and the top of the flexible conveying chain (14) extends above the track (18) installed. A conveyor belt (2) is installed on the top of the flexible conveying chain (14), and a plurality of limiting frames (4) are equidistantly installed on the top of the conveyor belt (2), and a circuit board is placed inside the limiting frame (4); Both ends of the bottom of the track (18) are equipped with fixed plates (22), the top of the fixed plates (22) are rotatably connected with sprockets (16), the inner side surfaces of both ends of the track (18) are provided with through grooves (23), the side surfaces of each sprocket (16) pass through the through grooves (23) and mesh with the flexible conveyor chain (14), and a driving motor (15) is installed at the bottom of one of the fixed plates (22), and the output shaft of the driving motor (15) is connected to the corresponding sprocket (16).

2. A photoresist coating device according to claim 1, characterized in that: Limiting sleeves (13) are installed at both ends of the strip-shaped movable plate (12), and each limiting sleeve (13) is slidably sleeved on the side surface of the U-shaped frame (5).

3. A photoresist coating device according to claim 1, characterized in that: A filter screen cover (10) is installed at one end of the air inlet pipe (20) away from the air pump (9).

4. A photoresist coating device according to claim 1, characterized in that: The air blowing head (6) is located on one side of the glue spraying head (21), and the glue spraying head (21) and the air blowing head (6) are both located above the circuit board.

5. A photoresist coating device according to claim 1, characterized in that: A plurality of fixed suction cups (3) are arranged inside each limiting frame (4).

6. A photoresist coating device according to claim 1, characterized in that: The air guide tube (8) is a flexible hose.

7. A photoresist coating device according to claim 1, characterized in that: A control box (24) is installed on the top of the base (1), and a controller inside the control box (24) is connected to the air pump (9), the glue spray head (21) and the drive motor (15) through wires, and the controller is also connected to the telescopic mechanism (11) through wires.

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