A plate surface film coating device

Abstract

The utility model relates to a kind of plate surface film covering device, including workshop, conveying belt is equipped in workshop, air ash removal mechanism and air ash removal mechanism are further included in workshop, plate ash removal mechanism includes hollow roll, dust collector, recycling box, brush and first motor;Hollow roll is rotatably arranged in workshop inside, and the surface of hollow roll is equipped with multiple brush;First motor is drivingly connected with hollow roll;Dust collector and recycling box are arranged on workshop;Dust collector is communicated with recycling box and hollow roll;Air ash removal mechanism includes second motor, screw rod, nut block, third motor, rotating shaft and static plate;Second motor is arranged on workshop and its output end is connected with screw rod;Nut block is threadedly connected with screw rod;Groove is opened in nut block;Third motor is arranged in groove inside and its output end is connected with rotating shaft;Static plate is circumferentially distributed on the surface of rotating shaft.The utility model can realize the cleaning function of dust in the air in workshop, avoid the influence of dust in the air on film.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, specifically to a coating device for sheet material surface. Background Technology

[0002] In the PCB manufacturing process, lamination is a key process in flexible circuit boards or rigid-flex boards, mainly used to protect the outer circuitry and insulation.

[0003] Chinese Patent No. CN217622190U discloses a PCB circuit board coating device; by using a first cylinder, a cleaning block, a processing chamber and a vacuum cleaner in combination, the surface of the circuit board can be cleaned before the coating operation, thereby ensuring the cleanliness of the circuit board surface and avoiding the situation where dust and other impurities affect the coating effect of the circuit board. The dust and other impurities generated during cleaning are pumped into a collection box for storage and unified treatment.

[0004] However, the above-mentioned existing technology has the following defects: it can only clean the dust on the surface of the PCB board. If the dust content in the air is high during the lamination process, the dust in the air will be pressed between the film and the board, resulting in uneven film layer and pinholes, bubbles or pattern defects after exposure. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a coating device for the surface of a sheet material.

[0006] The technical solution of this utility model: A sheet metal surface coating device, comprising a workshop, a conveyor belt within the workshop, a frame within the workshop, and further comprising:

[0007] The board cleaning mechanism includes a hollow roller, a vacuum cleaner, a recycling bin, brushes, and a first motor. The hollow roller is rotatably located inside the workshop, and its surface has multiple holes. The surface of the hollow roller is provided with multiple brushes. The first motor is located on the workshop floor and is connected to the hollow roller for transmission. The vacuum cleaner and the recycling bin are located on the workshop floor. The vacuum cleaner is connected to the recycling bin and the hollow roller, and the connection point is rotatably set.

[0008] An air cleaning mechanism includes a housing, a fan, a second motor, a lead screw, a nut block, a third motor, a rotating shaft, and an electrostatic plate. The lead screw is rotatably located inside the cleaning chamber. The second motor is located on the cleaning chamber, and its output end is connected to the lead screw. The nut block is threadedly connected to the lead screw and slidably connected to the cleaning chamber. A groove is formed on the nut block. The third motor is located inside the groove, and its output end is connected to the rotating shaft. Multiple electrostatic plates are arranged circumferentially on the surface of the rotating shaft. The housing is located on the cleaning chamber and communicates with it. The fan is located inside the housing. A dustproof screen is provided on the housing.

[0009] The lamination mechanism, located on the frame, is used to laminate PCB boards.

[0010] Preferably, the workshop is equipped with a first hinged door and a second hinged door at each end to facilitate the entry and exit of staff.

[0011] Preferably, indicator lights are provided in the workshop; a laser scattering sensor is provided on the nut block to detect the dust content in the air inside the workshop.

[0012] Preferably, one end of the hollow roller is connected to a driven gear; the output end of the first motor is connected to a driving gear that meshes with the driven gear.

[0013] Preferably, the recycling bin has an opening; a drawer is provided inside the opening.

[0014] Preferably, the film coating mechanism includes a mounting plate, a telescopic component, a U-shaped block, a pressure roller, a scraper, and a take-up roller; the mounting plate is connected to the frame; the take-up roller is rotatably mounted on the frame; the telescopic component is mounted on the mounting plate and connected to the U-shaped block; the pressure roller is rotatably mounted inside the U-shaped block; and the scraper is connected to one side of the U-shaped block.

[0015] Preferably, the frame is connected to two oppositely arranged guide plates, which are used to guide the transport of PCBs.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] By incorporating an air cleaning mechanism, a second motor, in conjunction with a lead screw, drives the electrostatic plate to move back and forth. Simultaneously, a third motor drives the electrostatic plate to rotate, which accelerates the airflow within the workshop and increases the dust capture range of the electrostatic plate. The electrostatic force of the electrostatic plate enables the cleaning of dust in the workshop air, preventing the dust in the air from affecting the coating process.

[0018] By incorporating a board cleaning mechanism, a first motor drives a hollow roller to rotate, which in turn drives the brush bristles to rotate, thus cleaning the dust on the PCB board surface. Simultaneously, a vacuum cleaner is used to collect the cleaned dust and transport it to a recycling bin, achieving a self-cleaning function for the dust on the PCB board surface. Attached Figure Description

[0019] Figure 1 A three-dimensional embodiment of this utility model is proposed. Figure 1 .

[0020] Figure 2 A three-dimensional embodiment of this utility model is proposed. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the internal structure of a workshop in cross-section, as proposed in one embodiment of the present invention. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the internal structure of a workshop in cross-section, as proposed in one embodiment of the present invention. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the coating mechanism in one embodiment of the present invention.

[0024] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle.

[0025] Figure 7 This is a schematic diagram of the plate cleaning mechanism in one embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the connection structure between the third motor, the electrostatic plate, and the nut block in a cross-sectional state of one embodiment of the present invention.

[0027] Reference numerals: 1. Workshop; 2. First hinged door; 3. First motor; 4. Outer casing; 5. Dustproof net; 6. Second hinged door; 7. Second motor; 8. Recycling bin; 9. Drawer; 10. Vacuum cleaner; 11. Frame; 12. Conveyor belt; 13. Guide plate; 14. Nut block; 15. Telescopic component; 16. Static plate; 17. Hollow roller; 18. Lead screw; 19. Rewinding roller; 20. Mounting plate; 21. U-shaped block; 22. Scraper; 23. Pressure roller; 24. Brush; 25. Laser scattering sensor; 26. Third motor. Detailed Implementation

[0028] Example 1

[0029] like Figure 1-4 as well as Figure 7-8 As shown, the present invention proposes a board surface coating device, including a workshop 1, with a first hinged door 2 and a second hinged door 6 at both ends of the workshop 1 to facilitate the entry and exit of workers; a conveyor belt 12 is provided inside the workshop 1, and a frame 11 is provided inside the workshop 1, with two oppositely arranged guide plates 13 connected to the frame 11 to guide the conveying of PCBs; it also includes a board cleaning mechanism, an air cleaning mechanism and a coating mechanism.

[0030] The board cleaning mechanism includes a hollow roller 17, a vacuum cleaner 10, a recycling bin 8, brush bristles 24, and a first motor 3. The hollow roller 17 is rotatably located inside the workshop 1, and its surface has multiple holes. The surface of the hollow roller 17 is provided with multiple brush bristles 24 (the brush bristles 24 are made of carbon fiber material to prevent static electricity from being generated when they rub against the PCB board surface). The first motor 3 is located on the workshop 1 and is connected to the hollow roller 17 for transmission. One end of the hollow roller 17 is connected to a driven gear. The output end of the first motor 3 is connected to a driving gear that meshes with the driven gear. The vacuum cleaner 10 and the recycling bin 8 are located on the workshop 1, and the recycling bin 8 has an opening. A drawer 9 is provided inside the opening. The vacuum cleaner 10 is connected to the recycling bin 8 and the hollow roller 17, and the connection point is rotatably arranged.

[0031] It should be noted that the staff places the PCB board to be coated on the conveyor belt 12 and between the guide plates 13. The conveyor belt 12 transports the PCB board, and at the same time, the first motor 3 is turned on. The first motor 3 drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the hollow roller 17 to rotate. Then, the vacuum cleaner 10 is turned on, and the vacuum cleaner 10 causes the holes on the surface of the hollow roller 17 to generate suction. When the PCB board passes through the hollow roller 17, the rotating hollow roller 17 drives the brush bristles 24 to rotate, which can sweep the dust on the surface of the PCB board. The dust that falls off is sucked into the hollow roller 17 and then transported by the vacuum cleaner 10 to the drawer 9 in the recycling bin 8, realizing the self-cleaning function of the dust on the surface of the PCB board.

[0032] It is worth noting that the chamber is equipped with a pressure relief valve to prevent excessive air pressure inside the chamber.

[0033] The air cleaning mechanism includes a housing 4, a fan, a second motor 7, a lead screw 18, a nut block 14, a third motor 26, a rotating shaft, and an electrostatic plate 16. The lead screw 18 is rotatably located inside the workshop 1. The second motor 7 is located on the workshop 1, and its output end is connected to the lead screw 18. The nut block 14 is threadedly connected to the lead screw 18 and slidably connected to the workshop 1. A groove is provided on the nut block 14. The third motor 26 is located inside the groove, and its output end is connected to the rotating shaft. Multiple electrostatic plates 16 are provided and are circumferentially distributed on the surface of the rotating shaft. The housing 4 is located on the workshop 1 and communicates with it. The fan is located inside the housing 4. A dustproof net 5 is provided on the housing 4.

[0034] It should be noted that before laminating the PCB board, the electrostatic plate 16, the third motor 26, and the second motor 7 are turned on. The second motor 7 (which is a forward and reverse motor) drives the lead screw 18 to rotate intermittently in both directions, causing the nut block 14 to move back and forth along the lead screw 18. The nut block 14 drives the third motor 26 and the electrostatic plate 16 to move back and forth. The third motor 26 drives the electrostatic plate 16 to rotate. The rotation of the electrostatic plate 16 can agitate the air in workshop 1 and accelerate airflow, making it easier for dust in the air to come into contact with the electrostatic plate 16. The electrostatic plate 16 can capture the dust in the air using electrostatic force. The reciprocating linear motion of the electrostatic plate 16 in workshop 1 can increase the dust capture range of the electrostatic plate 16, realize the self-cleaning function of dust in the air in workshop 1, and prevent the dust in the air from affecting the lamination quality of the PCB board.

[0035] It is worth noting that the fan can further accelerate the airflow inside workshop 1, while the dustproof net 5 on the outer casing 4 can prevent dust from the outside air from entering workshop 1.

[0036] The coating mechanism is located on the frame 11 and is used to coat the PCB board.

[0037] Example 2

[0038] like Figure 4 As shown, the present invention proposes a sheet material surface coating device. Compared with Embodiment 1, this embodiment also includes an indicator light in the workshop 1; a laser scattering sensor 25 is provided on the nut block 14 to detect the dust content in the air in the workshop 1. The working principle of the laser scattering sensor 25 is to use laser to irradiate particles to generate scattered light, and to measure the intensity of the scattered light through a photodetector to infer the particle concentration; the laser scattering sensor 25 model includes, but is not limited to, PMS5003.

[0039] In this embodiment, the laser scattering sensor 25 can monitor the dust content in the air inside workshop 1. When the dust content in the air inside workshop 1 is within the set range, the laser scattering sensor 25 will send feedback to the external controller, which will then control the indicator light to illuminate, reminding the staff that the dust removal is complete and the film coating operation can begin.

[0040] Example 3

[0041] like Figure 5-6As shown, this utility model proposes a sheet material surface coating device. Compared with Embodiment 2, this embodiment also details the structure of the coating mechanism. The coating mechanism includes a mounting plate 20, a telescopic component 15, a U-shaped block 21, a pressure roller 23, a scraper 22, and a take-up roller 19. The mounting plate 20 is connected to the frame 11. The take-up roller 19 is rotatably mounted on the frame 11 (the take-up roller 19 is wound with coating material). The telescopic component 15 is mounted on the mounting plate 20 and connected to the U-shaped block 21 (the telescopic component 15 includes, but is not limited to, structures such as cylinders). The pressure roller 23 is rotatably mounted inside the U-shaped block 21. The scraper 22 is connected to one side of the U-shaped block 21.

[0042] In this embodiment, when the first PCB board is conveyed to the take-up roller 19, the operator needs to manually attach one end of the film material to the surface of the PCB board. Then, the telescopic component 15 is controlled to drive the pressure roller 23 and scraper 22 to move downward, so that the pressure roller 23 and scraper 22 press down on the film material to ensure the stability of the adhesion between the film material and the PCB board. As the PCB is conveyed, the pressure roller 23 rolls the film material to ensure the flatness of the film material. At the same time, the scraper 22 can squeeze out the air between the film material and the PCB to avoid air bubbles between the film material and the PCB board.

[0043] In summary, when using this utility model, workers can enter the workshop 1 through the first hinged door 2 and the second hinged door 6; then, the box for recycling PCB boards (not shown in the figure) is placed at the end of the conveyor belt 12, and the air cleaning mechanism is activated. The second motor 7 drives the lead screw 18 to rotate intermittently in both directions, causing the nut block 14 to move back and forth along the lead screw 18. The nut block 14 drives the third motor 26 and the electrostatic plate 16 to move back and forth. At the same time, the third motor 26 drives the rotating shaft to rotate, which in turn drives the electrostatic plate 16 to rotate. The rotation of the electrostatic plate 16 can agitate the air in the workshop 1 and accelerate the airflow. (The fan is turned on to further accelerate the airflow in workshop 1), making it easier for dust in the air to come into contact with the electrostatic plate 16. The electrostatic plate 16 can capture the dust in the air using electrostatic force. The electrostatic plate 16 moves back and forth in a straight line in workshop 1, which can increase the dust capture range of the electrostatic plate 16 and realize the self-cleaning function of dust in the air in workshop 1, so as to avoid the dust in the air affecting the lamination quality of the PCB board. When the dust content in the air in workshop 1 is within the set content range, the laser scattering sensor 25 will feed back to the external controller, which will control the indicator light to light up to remind the staff that the dust removal is over and the lamination operation can be carried out.

[0044] The PCB board to be coated is placed on the conveyor belt 12 and positioned between the guide plates 13, ensuring that the PCB board can pass through the board cleaning mechanism and the coating mechanism. When the PCB board passes through the board cleaning mechanism, the first motor 3 drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the hollow roller 17 to rotate, and then the vacuum cleaner 10 is turned on. The vacuum cleaner 10 causes the holes on the surface of the hollow roller 17 to generate suction. When the PCB board passes through the hollow roller 17, the rotating hollow roller 17 drives the brush bristles 24 to rotate, which can sweep the dust on the surface of the PCB board. The dust that falls off is sucked into the hollow roller 17 and then transported by the vacuum cleaner 10 to the drawer 9 in the recycling bin 8, realizing the self-cleaning function of the dust on the surface of the PCB board.

[0045] When the first PCB board is conveyed to the take-up roller 19, the operator needs to manually attach one end of the film material to the surface of the PCB board. Then, the telescopic component 15 is controlled to move the pressure roller 23 and scraper 22 downward, so that the pressure roller 23 and scraper 22 press down on the film material to ensure the stability of the adhesion between the film material and the PCB board. As the PCB is conveyed, the pressure roller 23 rolls the film material to ensure the flatness of the film material on the PCB board surface. At the same time, the scraper 22 can squeeze out the air between the film material and the PCB board to avoid air bubbles between the film material and the PCB board. After the film is finished, the operator needs to use a scriber to cut the film between adjacent PCB boards during the conveying process. Finally, the filmed PCB board falls into the pre-prepared box for recycling.

[0046] After all the PCB boards are coated, open the first hinged door and the second hinged door 6 to move the box out of workshop 1. Then, pull out the drawer 9 and place it under the electrostatic board 16. After the electrostatic board 16 is de-energized, the static electricity on its surface disappears, and the dust on the surface of the electrostatic board 16 will automatically fall into the drawer 9 (by gently tapping the nut block 14, the electrostatic board 16 will vibrate slightly, helping the dust on its surface to fall off). Then, clean the dust in the drawer 9.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A film coating device for sheet metal surfaces, characterized in that, The workshop (1) includes a conveyor belt (12) and a frame (11). It also includes: The plate cleaning mechanism includes a hollow roller (17), a vacuum cleaner (10), a recycling bin (8), brushes (24), and a first motor (3); the hollow roller (17) is rotatably located inside the workshop (1), and the surface of the hollow roller (17) has multiple holes; the surface of the hollow roller (17) has multiple brushes (24); the first motor (3) is located on the workshop (1) and is connected to the hollow roller (17) for transmission; the vacuum cleaner (10) and the recycling bin (8) are located on the workshop (1); the vacuum cleaner (10) is connected to the recycling bin (8) and the hollow roller (17), and the connection point is rotatably arranged; An air cleaning mechanism includes a housing (4), a fan, a second motor (7), a lead screw (18), a nut block (14), a third motor (26), a rotating shaft, and an electrostatic plate (16). The lead screw (18) is rotatably located inside the workshop (1). The second motor (7) is located on the workshop (1) and its output end is connected to the lead screw (18). The nut block (14) is threadedly connected to the lead screw (18) and slidably connected to the workshop (1). A groove is provided on the nut block (14). The third motor (26) is located inside the groove and its output end is connected to the rotating shaft. Multiple electrostatic plates (16) are provided and are circumferentially distributed on the surface of the rotating shaft. The housing (4) is located on the workshop (1) and communicates with it. The fan is located inside the housing (4). A dustproof net (5) is provided on the housing (4). A film coating mechanism, which is mounted on the frame (11), is used to coat the PCB board.

2. The sheet metal surface coating device according to claim 1, characterized in that, The workshop (1) is equipped with a first hinged door (2) and a second hinged door (6) at both ends, which facilitates the entry and exit of staff in the workshop (1).

3. The sheet metal surface coating device according to claim 1, characterized in that, The workshop (1) is equipped with indicator lights; the nut block (14) is equipped with a laser scattering sensor (25) to detect the dust content in the air inside the workshop (1).

4. The sheet metal surface coating device according to claim 1, characterized in that, One end of the hollow roller (17) is connected to a driven gear; the output end of the first motor (3) is connected to a driving gear that meshes with the driven gear.

5. The sheet metal surface coating device according to claim 1, characterized in that, The recycling bin (8) has an opening; a drawer (9) is provided inside the opening.

6. The sheet metal surface coating device according to claim 1, characterized in that, The film coating mechanism includes a mounting plate (20), a telescopic component (15), a U-shaped block (21), a pressure roller (23), a scraper (22), and a take-up roller (19); the mounting plate (20) is connected to the frame (11); the take-up roller (19) is rotatably mounted on the frame (11); the telescopic component (15) is mounted on the mounting plate (20) and connected to the U-shaped block (21); the pressure roller (23) is rotatably mounted inside the U-shaped block (21); and the scraper (22) is connected to one side of the U-shaped block (21).

7. The sheet metal surface coating device according to claim 1, characterized in that, The frame (11) is connected to two oppositely arranged guide plates (13) for guiding the transport of PCBs.

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