A production device for inverter circuit board

Abstract

The present invention provides an inverter circuit board production device, which is used for spraying conformal coating on the front and back sides of the circuit board, and comprises a coating platform and a spraying device. A mounting plate is provided in the middle of the coating platform, and the spraying device is installed on the mounting plate; a transmission component with interval distribution is provided on one side of the coating platform, which is used to transport the circuit board to the middle of the spraying area; a baffle and a brushing device are provided below the coating platform, and the baffle is used to limit the movement position of the circuit board to maintain the stability of the spraying; the brushing device is used to brush the conformal coating on the back of the circuit board; the spraying device is used to brush the conformal coating on the front of the circuit board. The spraying device provided by the present invention is used for spraying the front of the circuit board, and can switch between wide and narrow areas without replacing the nozzle. While avoiding painting the heat sink, resistors, diodes, etc. on the circuit board, the problem of touching the components on the circuit board when the existing nozzle is switched can be avoided by switching itself, thereby improving the quality of spraying.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic inverter mainboard production, and in particular to an inverter circuit board production device. Background Art

[0002] The most popular industry in recent years should be the new energy sector, and the new energy sector and photovoltaic power generation have ushered in their golden period of development. As an important equipment in the photovoltaic power generation industry, the photovoltaic inverter has seen a surge in demand for inverters that promote power conversion as the power conversion market continues to expand, and the inverter market has achieved unprecedented development.

[0003] China's photovoltaic installed capacity continues to grow, and the production of photovoltaic inverters has become more streamlined and automated. At present, the early production technology of circuit boards is relatively mature, and can be designed and produced according to the needs of photovoltaic inverters. However, to meet the one-stop circuit board production, it is also necessary to complete the welding of circuit components, heat sinks, diodes, etc. on the circuit board in sequence, so that the circuit board can be installed and used after leaving the factory. This production method is achieved by expanding the production line and adding production processes. However, since photovoltaic inverters are mostly used outdoors, the heat sinks of micro photovoltaic inverters must be installed on the circuit board, which not only takes up a large space, but also is not convenient for applying three-proof paint for protection.

[0004] In the production of circuit boards, heat sinks, resistors, diodes, etc. need to be kept away from the spraying of conformal coatings to avoid affecting their performance. Now, automated spraying equipment provides coarse and fine nozzles for switching, so that wide and narrow areas on the circuit board can be sprayed separately. This switching method has a significant decrease in efficiency when spraying photovoltaic inverter circuit boards due to the influence of heat sinks, etc., and it is easy to touch the components on the circuit board during switching. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a spraying device for spraying the front of a circuit board, which can switch between a wide area and a narrow area without replacing the nozzle. While avoiding painting heat sinks, resistors, diodes, etc. on the circuit board, the problem of the existing nozzle touching the components on the circuit board when switching can be avoided through self-switching, thereby improving the quality of spraying.

[0006] In order to solve the above technical problems, the present invention solves the problem of the nozzle touching the components on the circuit board when switching due to the influence of the heat sink etc. when spraying the photovoltaic inverter circuit board through the following technical solution.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An inverter circuit board production device is used for spraying conformal coating on the front and back sides of the circuit board, and comprises a coating platform and a spraying device. A mounting plate is provided in the middle of the coating platform, and a spraying area is provided on one side of the mounting plate and a material receiving area is provided on the other side of the coating platform. The spraying device is installed on the mounting plate; one side of the coating platform is provided with a transmission component distributed at intervals, which is used to transmit the circuit board to the middle of the spraying area; a baffle and a brushing device are provided below the coating platform, and the baffle is used to limit the moving position of the circuit board to maintain stable spraying; the brushing device is used to brush the conformal coating on the back of the circuit board; and the spraying device is used to brush the conformal coating on the front of the circuit board.

[0009] Preferably, the spraying equipment consists of a sliding platform, a nozzle, and a liquid pumping mechanism; the nozzle is installed on the sliding platform and faces the spraying area downward; the sliding platform is slidably arranged on one side of the mounting plate, and is used to control the movement of the nozzle in the horizontal and vertical directions; the liquid pumping mechanism is installed on the mounting plate and connected to the nozzle, and is used to transport the three-proof paint.

[0010] Preferably, the sliding platform is provided with an X-axis sliding assembly and a Y-axis sliding assembly.

[0011] The X-axis sliding assembly passes through the support seat of the nozzle and cooperates with the thread to control the movement of the nozzle on the X-axis. The X-axis sliding assembly is installed on the Y-axis sliding assembly. The Y-axis sliding assembly controls the movement of the nozzle on the Y-axis through the X-axis sliding assembly.

[0012] The Y-axis sliding assembly is installed on the bottom surface of the sliding platform.

[0013] Preferably, the nozzle is composed of an external pipe and an internal pipe, wherein the internal pipe is arranged in the external pipe coaxially with the external pipe.

[0014] The pumping mechanism penetrates into the external pipeline and communicates with the external pipeline and the internal pipeline.

[0015] Preferably, a micro air pump is installed on the nozzle, and the micro air pump has a rod body extending through the external pipe and connected to the internal pipe;

[0016] A baffle is provided on the outside of the inner pipeline for sealing the outer pipeline.

[0017] Preferably, an inner channel and an outer channel are formed inside the nozzle, and the inner channel and the outer channel are connected by a uniform pumping mechanism.

[0018] The inner channel and the outer channel can simultaneously convey conformal paint for spraying, and are used for spraying in open areas on the circuit board;

[0019] The inner channel can extend downward and seal the outer channel for spraying narrow areas on the circuit board.

[0020] Preferably, the transmission assembly is composed of a plurality of equally spaced rotating shafts, and the plurality of rotating shafts are gear-driven to rotate synchronously in the same direction.

[0021] The brush coating device is in gear transmission with one of the rotating shafts.

[0022] Preferably, the brushing equipment includes a soft brush, a roller, and a water tank;

[0023] The water tank is arranged below the coating platform and is installed with conformal coating;

[0024] The soft brushes are evenly distributed on the roller in the circumferential direction, and one of the soft brushes passes through between adjacent rotating shafts and extends to the surface of the coating platform;

[0025] The roller is arranged above the water tank, and the soft brush is dipped into the conformal paint by the rotation of the roller.

[0026] Preferably, the brushing device further comprises a variable speed transmission assembly and intermittent transmission gears,

[0027] The intermittent transmission gear is sleeved on the roller and is in transmission cooperation with the speed change transmission assembly;

[0028] The speed change transmission assembly is in transmission cooperation with one of the rotating shafts.

[0029] Preferably, the blocking member is disposed below the coating platform, and the blocking member passes between the two rotating shafts to block the moving track of the circuit board.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention provides an inverter circuit board production device, which is used for spraying three-proof paint on a transfer-type photovoltaic inverter circuit board, and comprises a spraying device and a brushing device, which sequentially brush the circuit board from both sides to improve the brushing efficiency.

[0032] The spraying equipment provided by the present invention is used for spraying the front side of the circuit board, and can switch between wide area and narrow area without replacing the nozzle. While avoiding painting the heat sink, resistor and diode on the circuit board, the problem of the existing nozzle touching the components on the circuit board when switching can be avoided through its own switching, thereby improving the quality of spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1This is a schematic structural diagram of the brush coating device of the present invention when spraying the back of a circuit board;

[0035] Figure 2 This is a schematic structural diagram of the spraying equipment of the present invention when spraying the front side of a circuit board;

[0036] Figure 3 It is a schematic diagram of the structure of the spraying equipment of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the sliding platform of the present invention;

[0038] Figure 5 It is a schematic diagram of the structure of the brush painting equipment of the present invention;

[0039] Figure 6 It is a schematic diagram of the structure of the speed change transmission assembly of the present invention;

[0040] Figure 7 It is a schematic diagram of the cross-sectional structure of the nozzle of the present invention;

[0041] Figure 8 It is a schematic diagram of the cross-sectional structure of the nozzle internal passage extending downwards according to the present invention.

[0042] Explanation of the figure numbers: 1. Coating platform; 2. Spraying equipment; 21. Sliding platform; 211. X-axis sliding assembly; 212. Y-axis sliding assembly; 22. Nozzle; 221. External pipe; 222. Internal pipe; 223. Baffle; 23. Pumping mechanism; 3. Mounting plate; 4. Conveying assembly; 5. Baffle; 6. Brushing equipment; 61. Soft brush; 62. Roller; 63. Water tank; 64. Variable speed transmission assembly; 65. Intermittent transmission gear. DETAILED DESCRIPTION

[0043] The present invention is described in further detail below with reference to the accompanying drawings.

[0044] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0045] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0046] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0047] Example:

[0048] See also Figure 1-8 The present invention provides an inverter circuit board production device, which is used for spraying conformal coating on the front and back surfaces of photovoltaic inverter circuit boards. The device comprises a coating platform 1 and a spraying device 2. A mounting plate 3 is provided in the middle of the coating platform 1. The coating platform 1 is provided with a spraying area on one side of the mounting plate 3 and a material receiving area on the other side. The spraying device 2 is installed on the mounting plate 3. A conveying assembly 4 is provided at intervals on one side of the coating platform 1 for conveying the circuit board to the middle of the spraying area. A baffle 5 and a brushing device 6 are provided below the coating platform 1. The baffle 5 is used for limiting the moving position of the circuit board to maintain stable spraying. The brushing device 6 is used for brushing conformal coating on the back of the circuit board. The spraying device 2 is used for brushing conformal coating on the front of the circuit board.

[0049] Some implementation methods of the present application are described in detail below with reference to the accompanying drawings:

[0050] In the embodiment of the present application, a mounting plate 3 is vertically fixedly installed in the middle of the coating platform 1 to separate the left and right sides into a spraying area and a material receiving area, and a groove is provided in the middle of the bottom surface of the mounting plate 3 to connect the left and right sides of the coating platform 1. A conveying assembly 4 is installed on the left side of the coating platform 1 to transport the photovoltaic inverter circuit board to the bottom of the spraying equipment 2. The circuit board that has been sprayed will also be transported to the material receiving area by the conveying assembly 4.

[0051] In an embodiment of the present application, the spraying equipment 2 is composed of a sliding platform 21, a nozzle 22, a liquid pumping mechanism 23, etc. The sliding platform 21 and the liquid pumping mechanism 23 are both installed on the mounting plate 3, the nozzle 22 is installed on the sliding platform 21, and the infusion pipe of the liquid pumping mechanism 23 is connected to the nozzle 22.

[0052] An X-axis sliding assembly 211 and a Y-axis sliding assembly 212 are installed on the sliding platform 21. The Y-axis sliding assembly 212 is symmetrically installed on both sides of the bottom surface of the sliding platform 21; the X-axis sliding assembly 211 is installed on the Y-axis sliding assembly 212, and the Y-axis sliding assembly 212 can control the movement of the X-axis sliding assembly 211 in the Y-axis direction; the nozzle 22 is installed on the X-axis sliding assembly 211, and the X-axis sliding assembly 211 can control the movement of the nozzle 22 in the X-axis direction. The sliding platform 21 is used to control the horizontal movement of the nozzle 22. In addition, the sliding platform 21 is slidably installed on the mounting plate 3 in the vertical direction. The sliding platform 21 can be controlled by setting a motor or an air pump on the mounting plate 3 to realize the vertical movement of the nozzle 22, so that the nozzle 22 can be close to the circuit board before spraying liquid.

[0053] The liquid pumping mechanism 23 is composed of a liquid storage tank, a booster pump and a hose. The liquid storage tank is fixed on the right side of the mounting plate 3, and the booster pump is arranged on the left side of the mounting plate 3. The liquid booster pump is connected to the liquid storage tank and is connected to the nozzle 22 through a hose.

[0054] It should be noted that the end of the nozzle 22 is connected to a micro air pump, which is fixed on a support seat, and the support seat is connected to the X-axis sliding assembly 211. The nozzle 22 is composed of an external pipe 221 and an internal pipe 222, and the internal pipe 222 is movably installed in the external pipe 221 and is coaxially arranged therewith; the rod of the micro air pump penetrates into the external pipe 221 and is connected to the internal pipe 222, and the micro air pump can control the internal pipe 222 to extend from the external pipe 221. The hose of the pump mechanism 23 penetrates into the external pipe 221 and is connected to the external pipe 221 and the internal pipe 222. During spraying, the three-proof paint flows out from the external pipe 221 and the internal pipe 222 at the same time.

[0055] A baffle 223 is provided on the outside of the inner pipeline 222 for sealing the outer pipeline 221 . When the micro air pump controls the inner pipeline 222 to extend out from the outer pipeline 221 , the baffle 223 can seal the outer pipeline 221 .

[0056] In the present invention, the nozzle 22 is composed of an outer channel 221 and an inner channel 222, the middle of the inner channel 222 is used as the inner channel, and the area between the outer channel 221 and the inner channel 222 is used as the outer channel. When the inner channel and the outer channel are kept unobstructed at the same time, the three-proof paint can be transported for spraying at the same time for spraying the open area on the circuit board; the inner channel can extend downward and seal the outer channel for spraying the narrow area on the circuit board.

[0057] The nozzle 22 of the present invention can avoid painting the heat sink, resistors and diodes on the circuit board. In addition, the present invention can switch between coarse painting and fine painting by simply extending the inner pipe 222 outward, which can avoid the existing nozzle 22 touching the components on the circuit board when switching.

[0058] In an embodiment of the present application, the transmission assembly 4 is composed of a plurality of rotating shafts that are evenly spaced apart, and the plurality of rotating shafts are synchronously rotated in the same direction by gear transmission, and the brushing device 6 is geared with one of the rotating shafts.

[0059] In the implementation of the present application, the front and back of the circuit board are sprayed. The spraying device 2 is used to spray the front of the circuit board. The front of the circuit board has cable interfaces, heat sinks, resistors and other devices, which can be effectively avoided by the present invention. A brushing device 6 is also provided to paint the back of the circuit board. The back of the circuit board is relatively flat and can be fully painted. The brushing device 6 can fully cover the back at one time.

[0060] It should be noted that the brush coating device 6 is composed of a soft brush 61, a roller 62, a water tank 63, a speed-changing transmission assembly 64 and an intermittent transmission gear 65. The water tank 63 is arranged below the coating platform 1 and is installed with a three-proof paint; the soft brushes 61 are evenly distributed on the roller 62 in the circumferential direction, and one of the soft brushes 61 extends from between adjacent rotating shafts to the surface of the coating platform 1; the roller 62 is arranged above the water tank 63, and the soft brush 61 is dipped in the three-proof paint by rotating the roller 62; the intermittent transmission gear 65 is sleeved on the output end of the speed-changing transmission assembly 64 for transmission cooperation with the roller 62; the speed-changing transmission assembly 64 is transmission-coordinated with one of the rotating shafts.

[0061] The present invention provides three soft brushes 61 and evenly distributes them. Teeth are partially provided on the surface of the intermittent transmission teeth 65. When the intermittent transmission teeth 65 cooperate with the gear transmission on the roller 62, the roller 62 can be controlled to rotate 120° each time to complete the position exchange between the soft brushes 61, ensuring that the soft brush 61 in contact with the circuit board is dipped with three-proof paint.

[0062] The rotating shaft is driven by a motor to realize synchronous rotation in the same direction, and the circuit board is transported to the designated area. After the circuit board enters the conveying component 4, it is convenient for the soft brush to contact and realize the brushing of the back side. The speed change transmission component 64 is used to reduce the transmission speed ratio, so that the soft brush 61 remains stationary while the circuit board passes through the soft brush 61. The switching of the soft brush 61 occurs in the conveying gap between two adjacent circuit boards.

[0063] It should be noted that the left side of the coating platform 1 will be connected to a conveying assembly for intermittently conveying circuit boards, and the right side of the coating platform 1 will be installed with a multi-freedom robot arm to take away the circuit boards located in the receiving area.

[0064] In the embodiment of the present application, a stopper 5 is also provided, which is provided below the coating platform 1 and passes through between the two rotating shafts to block the moving track of the circuit board, thereby preventing the circuit board from overflowing the spraying range and providing stability during spraying.

[0065] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An inverter circuit board production device, used for spraying conformal coating on the front and back sides of the circuit board, comprising a coating platform (1) and a spraying device (2), wherein a mounting plate (3) is provided in the middle of the coating platform (1), the coating platform (1) is provided with a spraying area on one side of the mounting plate (3) and a material receiving area on the other side, and the spraying device (2) is installed on the mounting plate (3); Features: One side of the coating platform (1) is provided with a transmission assembly (4) distributed at intervals, which is used to transmit the circuit board to the middle of the spraying area; A baffle (5) and a brush coating device (6) are provided below the coating platform (1); the baffle (5) is used to limit the movement of the circuit board to maintain spraying stability; the brush coating device (6) is used to apply conformal coating to the back of the circuit board; The spraying equipment (2) is used to apply conformal coating to the front of the circuit board; The spraying equipment (2) is composed of a sliding platform (21), a spray head (22), and a liquid pumping mechanism (23); The spray head (22) is mounted on the sliding platform (21) and faces the spraying area downward; The sliding platform (21) is slidably arranged on one side of the mounting plate (3) and is used to control the movement of the nozzle (22) in the horizontal and vertical directions; The pump mechanism (23) is mounted on the mounting plate (3) and is connected to the spray head (22) for conveying conformal coating; A micro air pump is installed on the nozzle (22), wherein the rod of the micro air pump passes through the external pipeline (221) and is connected to the internal pipeline (222); A baffle (223) is provided on the outside of the inner pipeline (222) for sealing the outer pipeline (221); An inner channel and an outer channel are formed inside the nozzle (22), and both the inner channel and the outer channel are connected to the liquid pump mechanism (23). The inner channel and the outer channel can simultaneously convey conformal paint for spraying, and are used for spraying in open areas on the circuit board; The inner channel can extend downward and seal the outer channel for spraying narrow areas on the circuit board.

2. The inverter circuit board production device according to claim 1, characterized in that: The sliding platform (21) is provided with an X-axis sliding assembly (211) and a Y-axis sliding assembly (212). The X-axis sliding assembly (211) passes through the support seat of the nozzle (22) and cooperates with the thread to control the movement of the nozzle (22) on the X-axis. The X-axis sliding assembly (211) is installed on the Y-axis sliding assembly (212). The Y-axis sliding assembly (212) controls the movement of the nozzle (22) on the Y-axis through the X-axis sliding assembly (211); The Y-axis sliding assembly (212) is installed on the bottom surface of the sliding platform (21).

3. The inverter circuit board production device according to claim 2, characterized in that: The nozzle (22) is composed of an external pipeline (221) and an internal pipeline (222), wherein the internal pipeline (222) is arranged in the external pipeline (221) and is coaxial with the external pipeline. The liquid pumping mechanism (23) penetrates into the interior of the external pipeline (221) and is in communication with the external pipeline (221) and the internal pipeline (222).

4. The inverter circuit board production device according to claim 3, characterized in that: The transmission assembly (4) is composed of a plurality of rotating shafts that are evenly spaced, and the plurality of rotating shafts are gear-driven to rotate synchronously in the same direction. The brush coating device (6) is in gear transmission cooperation with one of the rotating shafts.

5. The inverter circuit board production device according to claim 4, characterized in that: The brushing device (6) comprises a soft brush (61), a roller (62), and a water tank (63); The water tank (63) is arranged below the coating platform (1) and is installed with conformal coating; The soft brushes (61) are evenly distributed on the roller (62) in the circumferential direction, and one of the soft brushes (61) passes through between adjacent rotating shafts and extends to the surface of the coating platform (1); The roller (62) is arranged above the water tank (63), and the soft brush (61) is dipped into the three-proof paint by the rotation of the roller (62).

6. The inverter circuit board production device according to claim 5, characterized in that: The brushing device (6) further comprises a variable speed transmission assembly (64) and intermittent transmission gears (65). The intermittent transmission gear (65) is sleeved on the output end of the speed change transmission assembly (64) to cooperate with the roller (62) in transmission; The speed change transmission assembly (64) is in transmission cooperation with one of the rotating shafts.

7. The inverter circuit board production device according to claim 6, characterized in that: The blocking member (5) is arranged below the coating platform (1), and the blocking member (5) passes between the two rotating shafts to block the moving track of the circuit board.

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