New energy circuit board surface coating device and coating process thereof

Abstract

The invention belongs to the technical field of coating equipment, and particularly relates to a new energy circuit board surface coating device and a coating process thereof. The device comprises a coating machine table, a dust cover, an X-axis linear driving mechanism, a Y-axis linear driving mechanism, a sliding frame and a conveying mechanism, the X-axis linear driving mechanism is connected to the Y-axis linear driving mechanism, a sliding frame is connected to the X-axis linear driving mechanism, and a pair of coating assemblies is fixedly connected to the sliding frame and used for coating the two faces of the circuit board correspondingly; a turnover mechanism is connected to the coating machine table and used for turning over the circuit board, and the turnover mechanism is arranged between the two coating assemblies; a curing mechanism is arranged above the turnover mechanism and is used for curing the conformal coating on the circuit board; by arranging the pair of coating assemblies, the curing mechanism and the turnover mechanism on the coating machine table, two sides of the circuit board can be coated at a time, the coating effect of the circuit board is improved, and pollution to the surface of the circuit board in the coating process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coating equipment, and in particular to a new energy circuit board surface coating device and a coating process thereof. Background Art

[0002] Circuit boards are important electronic components, supporting electronic components and acting as the electrical connections for them. To protect circuit boards from environmental damage, they are coated with conformal coating during production. This provides excellent insulation, moisture resistance, corrosion resistance, and aging resistance, thus protecting the circuit boards. Coating machines are automated machines that apply conformal coating to circuit board surfaces.

[0003] For new energy vehicle circuit boards, the operating environment is relatively harsh and they are exposed to vibration and humidity for a long time. Some circuit boards need to be coated on both sides. Double-sided coating can buffer stress and prevent water vapor from penetrating, achieving better protection effects. Existing coating equipment can only coat one side of the circuit board at a time. After coating is completed, the circuit board is transported out, flipped manually or by machine, and then transported to the coating equipment for coating on the other side, resulting in low circuit board coating efficiency. In addition, the circuit boards are easily contaminated with dust when entering and leaving the coating equipment, affecting the coating effect. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a new energy circuit board surface coating device and a coating process thereof. By providing a pair of coating components, a curing mechanism and a flipping mechanism, both sides of the circuit board can be coated at one time, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical solutions of the present invention are as follows: a new energy circuit board surface coating device proposed by the present invention includes: a coating machine, a dust cover, an X-axis linear drive mechanism, a Y-axis linear drive mechanism, a sliding frame and a conveying mechanism; wherein the conveying mechanism is used to convey the circuit board, and the dust cover is provided with an avoidance hole through which the conveying mechanism passes; the X-axis linear drive mechanism is connected to the Y-axis linear drive mechanism, and the X-axis linear drive mechanism is connected to the sliding frame, and a pair of coating components are fixedly connected to the sliding frame, which are respectively used to coat the two sides of the circuit board; a flipping mechanism is connected to the coating machine for flipping the circuit board, and the flipping mechanism is arranged between the two coating components; a curing mechanism is provided above the flipping mechanism for curing the three-proof paint on the circuit board.

[0006] As an optimal technical solution of the present invention, the coating assembly includes a connecting frame, which is fixedly connected to the sliding frame, a sliding seat is slidably connected to the connecting frame, a coating gun is fixedly installed on the sliding seat, and a lifting cylinder is installed on the connecting frame, and the lifting cylinder piston rod is fixedly connected to the sliding seat.

[0007] As a preferred technical solution of the present invention, the coating gun is provided with a feed pipe and an air pipe, and an industrial camera is installed on the slide.

[0008] As a preferred technical solution of the present invention, the flipping mechanism includes a lifting frame, a lifting cylinder for driving the lifting frame, and a flipping frame rotatably connected to the lifting frame; the flipping frame is provided with a pair of first sliding holes, in which a slider is slidably connected, and a clamping assembly is fixedly installed on the slider for clamping the circuit board, and a flipping motor is installed on the lifting frame for driving the flipping frame to flip.

[0009] As a preferred technical solution of the present invention, the clamping assembly includes a connecting plate, which is fixedly connected to the slider. A vertical second sliding hole is provided on the connecting plate. A lifting block is slidingly connected in the second sliding hole, and a clamping plate is fixedly connected to the lifting block.

[0010] As an optimal technical solution of the present invention, a pair of transmission wheels are rotatably connected to the connecting plate, a transmission belt is connected between the two transmission wheels, the lifting block is fixedly connected to the transmission belt, and a driving motor is installed on the connecting plate to drive the transmission wheels to rotate.

[0011] As a preferred technical solution of the present invention, a rotating motor is installed on the turning frame, a rotating arm is fixedly connected to the rotating shaft of the rotating motor, and connecting rods are rotatably connected between both ends of the rotating arm and the two sliders.

[0012] As a preferred technical solution of the present invention, the curing mechanism includes a wind hood, a fan is installed on the top of the wind hood, and a plurality of UV lamps are installed in the wind hood.

[0013] As a preferred technical solution of the present invention, the conveying mechanism includes a conveyor belt and a limiting guide rail. The limiting guide rail is used to limit the two sides of the circuit board, and the limiting guide rail is provided with an avoidance groove that cooperates with the flipping mechanism.

[0014] A coating process for a new energy circuit board surface comprises the following steps: Step 1: The conveying mechanism conveys the first circuit board to the first coating station, and the first coating component sprays conformal coating on the front of the first circuit board; Step 2: After the front side of the first circuit board is coated, the conveying mechanism conveys the first circuit board to the curing station for curing. At the same time, the second circuit board is conveyed to the first coating station for spraying. After the first circuit board is cured, the flipping mechanism flips the first circuit board so that the back side of the first circuit board faces upward. Step 3: The first circuit board after flipping is transported to the second coating station, while the second circuit board is transported to the curing station. The third circuit board is transported to the first coating station, and then the second coating component sprays the three-conformal paint on the back of the first circuit board, and the first coating component sprays the three-conformal paint on the front of the third circuit board. After the coating of the front and back of the first circuit board is completed, the conveying mechanism conveys the first circuit board out, and the above actions are repeated.

[0015] The beneficial effects of the present invention are: 1. The present invention provides a pair of coating components, a curing mechanism, and a flipping mechanism on the coating machine. The two coating components spray the two sides of the circuit board respectively. The curing mechanism can quickly cure the conformal coating on the circuit board surface. The flipping mechanism flips the circuit board, so that both sides of the circuit board can be coated at one time, thereby improving the coating effect of the circuit board and avoiding contamination of the circuit board surface during the coating process.

[0016] 2. The present invention installs two coating components on the same sliding frame. Through the X-axis linear drive mechanism and the Y-axis linear drive mechanism, the two coating components can be operated successively to coat the front and back sides of the circuit board respectively, reducing equipment costs and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a new energy circuit board surface coating device proposed by the present invention.

[0018] Figure 2 This is a schematic structural diagram of the coating assembly proposed in the present invention.

[0019] Figure 3 This is a schematic structural diagram of the flipping mechanism proposed in the present invention.

[0020] Figure 4 This is a schematic diagram from another angle of the flip mechanism proposed by the present invention.

[0021] Figure 5 This is a schematic structural diagram of the clamping assembly proposed in the present invention.

[0022] Figure 6 This is a schematic structural diagram of the curing mechanism proposed in the present invention.

[0023] The corresponding names of the reference numerals in the figures are as follows: 100. Coating machine; 101. Avoidance hole; 102. Observation window; 200, dust cover; 300, conveying mechanism; 301, limiting guide rail; 302, conveyor belt; 303, avoidance groove; 400, coating assembly; 401, connecting frame; 402, slide; 403, lifting cylinder; 404, 405, 406, feeding pipe; 407, air pipe; 408, industrial camera; 500, flip mechanism; 501, lifting frame; 502, lifting cylinder; 503, flip frame; 504, clamping assembly; 5041, connecting plate; 5042, transmission wheel; 5043, transmission belt; 5044, driving motor; 5045, second sliding hole; 5046, lifting block; 5047, clamping plate; 505, slider; 506, rotating motor; 507, rotating arm; 508, connecting rod; 509, flip motor; 510, first sliding hole; 600, curing mechanism; 601, wind hood; 602, fan; 603, UV lamp; 700, Y-axis linear drive mechanism; 800, X-axis linear drive mechanism; 900. Sliding rack. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0025] Example: This example discloses a new energy circuit board surface coating device, such as Figures 1-6 As shown, it includes: a coating machine 100, a dust cover 200, an X-axis linear drive mechanism 800, a Y-axis linear drive mechanism 700, a sliding frame 900 and a conveying mechanism 300, the conveying mechanism 300 ( Figure 1 The conveying mechanism 300 is only partially shown in the figure (the figure shows a part of the structure of the conveying mechanism 300) for conveying circuit boards. The dust cover 200 is provided with an avoidance hole 101 through which the conveying mechanism 300 passes. The dust cover 200 adopts a fully enclosed structure to achieve a dust-proof effect, and a transparent observation window 102 is provided on the dust cover 200.

[0026] Preferably, the conveying mechanism 300 includes a conveyor belt 302 and a limiting guide rail 301. The conveyor belt 302 and the limiting guide rail 301 are each provided with a pair. The cross-section of the limiting guide rail 301 is L-shaped. The limiting guide rail 301 is used to limit the two sides of the circuit board, and the limiting guide rail 301 is provided with an avoidance groove 303 that cooperates with the flipping mechanism 500. The avoidance groove 303 is used to avoid the splint 5047, so that the splint 5047 can be lowered to a position flush with the height of the conveyor belt 302.

[0027] Among them, the X-axis linear drive mechanism 800 and the Y-axis linear drive mechanism 700 are existing technologies, which can achieve precise positioning, and the specific structure and control system are not described here; the Y-axis linear drive mechanism 700 is provided with a pair and fixedly installed above the coating machine 100, the X-axis linear drive mechanism 800 is slidably connected to the two Y-axis linear drive mechanisms 700, and the Y-axis linear drive mechanism 700 can drive the X-axis linear drive mechanism 800 to move along the Y direction, and the X-axis linear drive mechanism 800 is connected to the sliding frame 900, and a pair of coating components 400 are fixedly connected to the sliding frame 900, and the two coating components 400 operate independently, and the coating components 400 are respectively provided at both ends of the sliding frame 900, and the two coating components 400 correspond to two coating stations respectively, and the circuit board is coated on its front and back respectively at the two coating stations; in this embodiment, the X-axis linear drive mechanism 800 and the Y-axis linear drive mechanism 700 can drive the two coating components 400 to operate, and the front and back sides of the circuit board can be sprayed respectively and successively, which simplifies the equipment structure and reduces the equipment cost; and the coating machine A flipping mechanism 500 is connected to the table 100 for flipping the circuit board. The flipping mechanism 500 is located between the two coating assemblies 400. A curing mechanism 600 is located directly above the flipping mechanism 500. The curing mechanism 600 corresponds to the curing station, where the circuit board is cured with the conformal coating. In specific implementation, the conveying mechanism 300 conveys the circuit board to the first coating station. The first coating assembly 400 sprays the conformal coating on the front of the circuit board. After the spraying is completed, the circuit board is conveyed to the curing station. The curing mechanism 600 quickly cures the glue on the circuit board. The flipping mechanism 500 then flips the circuit board 180 degrees so that the back of the circuit board faces the conveying mechanism 300. The circuit board is then conveyed to the next coating station. The second coating assembly 400 sprays the conformal coating on the back of the circuit board. After the coating is completed, the conveying mechanism 300 conveys the circuit board to the outside of the coating machine 100. In this way, the front and back sides of the circuit board are sprayed at one time, greatly improving the spraying efficiency of the circuit board. In addition, the spraying process is in a closed environment, avoiding contamination of the circuit board.

[0028] Preferably, Figure 2 As shown, the coating assembly 400 includes a connecting frame 401, which is fixedly connected to the sliding frame 900, and a sliding seat 402 is slidably connected to the connecting frame 401, and a coating gun 404 is fixedly installed on the sliding seat 402. A lifting cylinder 403 is installed on the connecting frame 401, and the piston rod of the lifting cylinder 403 is fixedly connected to the sliding seat 402. A feed pipe 406 and an air pipe 407 are provided on the coating gun 404, and both the feed pipe 406 and the air pipe 407 are provided with solenoid valves, and an industrial camera 408 is installed on the sliding seat 402. During spraying, the lifting cylinder 403 drives the coating gun 404 to descend.

[0029] like Figure 3-Figure 5As shown, the flipping mechanism 500 includes a U-shaped lifting frame 501, a lifting cylinder 502 for driving the lifting frame 501, and a flipping frame 503 rotatably connected to the lifting frame 501; wherein the conveying mechanism 300 passes through the middle of the lifting frame 501 and the flipping frame 503, the lifting cylinder 502 is fixedly installed on the coating machine 100, the lifting frame 501 is fixedly connected to the piston rod of the lifting cylinder 502, and a pair of first sliding holes 510 are provided on the flipping frame 503, in which a slider 505 is slidably connected, and a clamping assembly 504 is fixedly installed on the slider 505 for clamping the circuit board, and a flipping motor 509 for driving the flipping frame 503 to flip is installed at one end of the lifting frame 501. It is fixedly connected to the rotating shaft of the flip motor 509; a rotating motor 506 is installed on the flip frame 503, and a rotating arm 507 is fixedly connected to the rotating shaft of the rotating motor 506. Both ends of the rotating arm 507 are rotatably connected to the two sliders 505 with a connecting rod 508. The rotating arm 507 is driven by the rotating motor 506 to rotate, and the two clamping components 504 are driven to approach each other to clamp the circuit board; wherein, the clamping component 504 includes a connecting plate 5041, which is fixedly connected to the slider 505, and a second vertical sliding hole 5045 is provided on the connecting plate 5041, and a lifting block 5046 is slidably connected in the second sliding hole 5045, and a splint 5047 is fixedly connected to the lifting block 5046, and the splint 5047 is used to The road plate is clamped, and the length of the clamping plate 5047 is the same as the width of the circuit board, which is convenient for better clamping; a pair of transmission wheels 5042 are rotatably connected to the connecting plate 5041, and the two transmission wheels 5042 are distributed up and down, and a transmission belt 5043 is connected between the two transmission wheels 5042, and the lifting block 5046 is fixedly connected to the transmission belt 5043. When the transmission belt 5043 moves, it drives the lifting block 5046 to move up and down, thereby driving the circuit board to move up and down, so that the flip frame 503 will not hinder the lifting of the circuit board; a driving motor 5044 is installed on the connecting plate 5041 to drive the transmission wheel 5042 to rotate; when flipping: the lifting frame 501 is driven to descend to the specified height by the lifting cylinder 502, and then the driving motor 5044 drives The transmission belt 5043 moves, lowering the clamping plate 5047 to a position flush with the height of the conveyor belt 302, and then the rotating motor 506 drives the two clamping components 504 to move closer to each other to clamp the circuit board; then the lifting cylinder 502 drives the lifting frame 501 to rise, and the flip motor 509 drives the flip frame 503 to flip upward 180°, so that the back of the circuit board faces upward, and then the lifting cylinder 502 drives the lifting frame 501 to descend again, and the drive motor 5044 drives the transmission belt 5043 to move, driving the clamping plate 5047 and the circuit board to slowly descend, and then the rotating motor 506 drives the two clamping components 504 to move away from each other, stably placing the circuit board on the conveyor belt 302, ensuring that the position of the flipped circuit board on the conveyor belt 302 is accurate.

[0030] like Figure 6 As shown, the curing mechanism 600 includes a hood 601, which is fixedly installed inside the dust cover 200 and is located above the flip mechanism 500 without affecting the operation of the flip mechanism 500. A fan 602 is installed on the top of the hood 601, and multiple UV lamps 603 are installed in the hood 601. Through the cooperation of the UV lamps 603 and the fans 602, the three-conformal paint on the circuit board can be quickly cured. The curing time is about 8-10 seconds, which is almost the same as the spraying time of the coating component 400 on the circuit board.

[0031] This embodiment discloses a coating process for a new energy circuit board surface, based on the above-mentioned coating equipment, including the following steps: Step 1: The conveying mechanism 300 conveys the first circuit board to the first coating station, and the first coating assembly 400 sprays conformal coating on the front of the first circuit board; Step 2: After the front side of the first circuit board is coated, the conveying mechanism 300 conveys the first circuit board to the curing station for curing. At the same time, the second circuit board is conveyed to the first coating station for spray coating. After the first circuit board is cured, the flipping mechanism 500 flips the first circuit board so that the back side of the first circuit board faces upward. Step 3: The first circuit board after flipping is transported to the second coating station, while the second circuit board is transported to the curing station, and the third circuit board is transported to the first coating station. Then the second coating component 400 sprays the three-conformal paint on the back of the first circuit board, and the first coating component 400 sprays the three-conformal paint on the front of the third circuit board. Among them, the coating actions of the two coating components 400 are not performed at the same time, and the coating trajectories are controlled by independent control systems respectively; when the coating of the front and back of the first circuit board is completed, the conveying mechanism 300 conveys the first circuit board out, and the above actions are repeated to coat the front and back of each circuit board, which greatly improves the coating efficiency of the circuit boards.

[0032] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A new energy circuit board surface coating device, characterized in that: include: A coating machine (100), a dust cover (200), an X-axis linear drive mechanism (800), a Y-axis linear drive mechanism (700), a sliding frame (900) and a conveying mechanism (300); The conveying mechanism (300) is used to convey the circuit board, and the dust cover (200) is provided with an avoidance hole (101) through which the conveying mechanism (300) passes; An X-axis linear drive mechanism (800) is connected to a Y-axis linear drive mechanism (700), a sliding frame (900) is connected to the X-axis linear drive mechanism (800), and a pair of coating assemblies (400) are fixedly connected to the sliding frame (900), respectively used for coating two sides of the circuit board; A turning mechanism (500) is connected to the coating machine (100) for turning over the circuit board, and the turning mechanism (500) is arranged between the two coating assemblies (400). A curing mechanism (600) is arranged above the turning mechanism (500) for curing the conformal coating on the circuit board.

2. A new energy circuit board surface coating device according to claim 1, characterized in that: The coating assembly (400) includes a connecting frame (401), the connecting frame (401) is fixedly connected to the sliding frame (900), a sliding seat (402) is slidably connected to the connecting frame (401), a coating gun (404) is fixedly installed on the sliding seat (402), and a lifting cylinder (403) is installed on the connecting frame (401), and the piston rod of the lifting cylinder (403) is fixedly connected to the sliding seat (402).

3. A new energy circuit board surface coating device according to claim 2, characterized in that: The coating gun (404) is provided with a feeding pipe (406) and an air pipe (407), and the slide (402) is equipped with an industrial camera (408).

4. A new energy circuit board surface coating device according to claim 3, characterized in that: The flipping mechanism (500) comprises a lifting frame (501), a lifting cylinder (502) for driving the lifting frame (501), and a flipping frame (503) rotatably connected to the lifting frame (501); a pair of first sliding holes (510) are provided on the flipping frame (503), a slider (505) is slidably connected in the first sliding holes (510), a clamping assembly (504) is fixedly mounted on the slider (505) for clamping the circuit board, and a flipping motor (509) is mounted on the lifting frame (501) for driving the flipping frame (503) to flip.

5. The new energy circuit board surface coating device according to claim 4, characterized in that: The clamping assembly (504) comprises a connecting plate (5041), the connecting plate (5041) being fixedly connected to the slider (505), a second vertical sliding hole (5045) being provided on the connecting plate (5041), a lifting block (5046) being slidably connected in the second sliding hole (5045), and a clamping plate (5047) being fixedly connected to the lifting block (5046).

6. A new energy circuit board surface coating device according to claim 5, characterized in that: A pair of transmission wheels (5042) are rotatably connected to the connecting plate (5041), a transmission belt (5043) is transmission-connected between the two transmission wheels (5042), a lifting block (5046) is fixedly connected to the transmission belt (5043), and a driving motor (5044) for driving the transmission wheels (5042) to rotate is installed on the connecting plate (5041).

7. A new energy circuit board surface coating device according to claim 6, characterized in that: A rotating motor (506) is installed on the turning frame (503), a rotating arm (507) is fixedly connected to the rotating shaft of the rotating motor (506), and connecting rods (508) are rotatably connected between the two ends of the rotating arm (507) and the two sliders (505).

8. The new energy circuit board surface coating device according to claim 7, characterized in that: The curing mechanism (600) comprises a wind hood (601), a fan (602) is installed on the top of the wind hood (601), and a plurality of UV lamps (603) are installed in the wind hood (601).

9. The new energy circuit board surface coating device according to claim 8, characterized in that: The conveying mechanism (300) comprises a conveying belt (302) and a limiting guide rail (301). The limiting guide rail (301) is used to limit the positions of two sides of the circuit board, and an avoidance groove (303) cooperating with the turning mechanism (500) is provided on the limiting guide rail (301).

10. A coating process for a new energy circuit board surface, using the new energy circuit board surface coating device according to claim 8, characterized in that: The following steps are involved: Step 1: The conveying mechanism (300) conveys the first circuit board to the first coating station, and the first coating component (400) sprays conformal coating on the front surface of the first circuit board; Step 2: After the coating of the front side of the first circuit board is completed, the conveying mechanism (300) conveys the first circuit board to the curing station for curing, and at the same time, the second circuit board is conveyed to the first coating station for spraying. After the curing of the first circuit board is completed, the flipping mechanism (500) flips the first circuit board so that the back side of the first circuit board faces upwards; Step 3: The first circuit board after flipping is transported to the second coating station, while the second circuit board is transported to the curing station, and the third circuit board is transported to the first coating station. Then, the second coating component (400) sprays the three-proof paint on the back of the first circuit board, and the first coating component (400) sprays the three-proof paint on the front of the third circuit board. After the coating of the front and back of the first circuit board is completed, the conveying mechanism (300) conveys the first circuit board out, and the above steps are repeated.

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