Printing ink coating device for bottom plate of circuit board

Abstract

A circuit board bottom plate ink coating device comprises a coating roller, an ink supply mechanism arranged above the coating roller, a scraper arranged on the left side of the coating roller and a pressing roller arranged below the coating roller, conveying rollers are arranged on the two sides of the pressing roller and installed in the middle of a rack, a circuit board is arranged on the conveying rollers and horizontally moves rightwards, and the distance between the coating roller and the pressing roller is adjustable; the ink supply mechanism comprises an oil guide pipe arranged above the coating roller in parallel, nozzles are uniformly arranged at the lower part of the oil guide pipe, and the upper part of the oil guide pipe is connected with an oil inlet pipe; the nozzle sprays printing ink on the coating roller, the scraper blade evenly scrapes the printing ink on the coating roller and scrapes redundant printing ink, the circuit board passes through the space between the coating roller and the pressing roller, and the printing ink on the coating roller is evenly coated on the upper surface of the circuit board. According to the device, ink is directly sprayed on the coating roller and scraped evenly through the hanging plate, the ink is evenly coated on the circuit board, the effect is good, redundant ink on the scraping plate drips into the ink box to be recycled, and the utilization rate of the ink is increased.

Description

Technical Field

[0001] The utility model relates to an ink coating device for a circuit board bottom plate. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layouts. During the processing of circuit boards, it is necessary to coat a layer of ink on the surface of the circuit board. Most of the existing ink coating devices have complex structures and large volumes, are not suitable for use in small enterprises, and have high production costs. Content of the Utility Model

[0003] Aiming at the deficiencies in the above problems, the utility model provides an ink coating device for a circuit board bottom plate.

[0004] To achieve the above object, the utility model provides an ink coating device for a circuit board bottom plate, which includes a coating roller, an ink supply mechanism arranged above the coating roller, a squeegee arranged on the left side of the coating roller, and a pressure roller arranged below the coating roller. Conveyor rollers are arranged on both sides of the pressure roller, and the conveyor rollers are installed in the middle of the frame. The circuit board is placed on the conveyor rollers and moves horizontally to the right. The pressure roller and the conveyor rollers rotate in the same direction, the coating roller and the pressure roller rotate in opposite directions and at the same speed, and the distance between the coating roller and the pressure roller is adjustable;

[0005] The ink supply mechanism includes an oil guide pipe arranged in parallel above the coating roller. Nozzles are evenly arranged along the length direction at the lower part of the oil guide pipe, and an oil inlet pipe is connected to the upper part of the oil guide pipe;

[0006] The nozzles spray ink on the coating roller, the squeegee scrapes the ink on the coating roller evenly and scrapes off the excess ink. The circuit board passes between the coating roller and the pressure roller, and the ink on the coating roller is evenly coated on the upper surface of the circuit board.

[0007] As a further improvement of the utility model, the distance between the coating roller and the pressure roller matches the thickness of the circuit board.

[0008] As a further improvement of the utility model, both ends of the coating roller pass through the frame and are connected to a first bearing seat, and one end of the coating roller passes through the first bearing seat and is connected to a first motor.

[0009] As a further improvement of the utility model, both ends of the pressure roller pass through the frame and are connected to a second bearing seat, and one end of the pressure roller passes through the second bearing seat and is connected to a second motor.

[0010] As a further improvement of the utility model, waist-shaped grooves are machined on the front and back of the frame correspondingly, both ends of the pressure roller pass through the waist-shaped grooves respectively, and the pressure roller can adjust its up-and-down position along the waist-shaped grooves.

[0011] As a further improvement of the utility model, the scraper is arranged along the axial direction of the coating roller, the cross section of the scraper is in a concave arc shape, one side of the scraper facing the coating roller abuts against the outer peripheral surface of the coating roller, and the other side of the scraper is connected and fixed to the frame through a bracket.

[0012] As a further improvement of the utility model, an ink box is arranged below the scraper, the ink in the scraper falls into the ink box along the openings on both sides, and an oil outlet pipe is arranged on one side of the ink box and is communicated with the oil inlet pipe.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The device directly sprays the ink evenly on the coating roller and scrapes it evenly again through the hanging plate. The ink is evenly coated on the circuit board with good effect. Moreover, the excess ink on the scraper drips into the ink box for recycling, improving the utilization rate of the ink. The overall structure of the device is simple and easy to operate.

[0015] 2. The distance between the coating roller and the pressure roller is adjustable, which is suitable for ink coating of circuit boards with different thicknesses, and has good practicability. Description of the Drawings

[0016] Figure 1 is the front view of an ink coating device for a circuit board bottom plate of the utility model;

[0017] Figure 2 is Figure 1 the view from direction A in

[0018] In the figure: 1. Ink supply mechanism; 11. Oil guide pipe; 12. Nozzle; 13. Oil inlet pipe; 2. Coating roller; 21. First bearing seat; 22. First motor; 3. Scraper; 31. Bracket; 4. Frame; 41. Waist-shaped groove; 5. Circuit board; 6. Conveyor roller; 7. Pressure roller; 71. Second bearing seat; 72. Second motor; 8. Ink box; 81. Oil outlet pipe. Detailed Embodiment

[0019] As Figure 1 、 Figure 2As shown in the figure, a device for coating ink on the bottom plate of a circuit board according to the present utility model includes a coating roller 2, an ink supply mechanism 1 disposed above the coating roller 2, a scraper 3 disposed on the left side of the coating roller 2, and a pressure roller 7 disposed below the coating roller 2. Conveyor rollers 6 are provided on both sides of the pressure roller 7. The conveyor rollers 6 are installed in the middle of the frame 4. The circuit board 5 is placed on the conveyor rollers 6 and moves horizontally to the right. The pressure roller 7 and the conveyor rollers 6 rotate in the same direction. The coating roller 2 and the pressure roller 7 rotate in opposite directions and at the same speed. The distance between the coating roller 2 and the pressure roller 7 is adjustable and matches the thickness of the circuit board 5. Both ends of the coating roller 2 pass through the frame 4 and are connected to the first bearing block 21. One end of the coating roller 2 passes through the first bearing block 21 and is connected to the first motor 22. Both ends of the pressure roller 7 pass through the frame 4 and are connected to the second bearing block 71. One end of the pressure roller 7 passes through the second bearing block 71 and is connected to the second motor 72. Waist-shaped grooves 41 are machined on the front and back of the frame 4 corresponding to each other. Both ends of the pressure roller 7 pass through the waist-shaped grooves 41 respectively, and the pressure roller 7 can adjust its up and down position along the waist-shaped grooves 41;

[0020] The ink supply mechanism 1 includes an oil guide pipe 11 disposed parallel above the coating roller 2. Nozzles 12 are evenly provided along the length direction at the lower part of the oil guide pipe 11. The upper part of the oil guide pipe 11 is connected to an oil inlet pipe 13;

[0021] The scraper 3 is arranged along the axial direction of the coating roller 2. The cross-section of the scraper 3 is in a concave arc shape. One side of the scraper 3 facing the coating roller 2 abuts against the outer peripheral surface of the coating roller 2. The other side of the scraper 3 is fixedly connected to the frame 4 through a bracket 31. An ink tank 8 is provided below the scraper 3. The ink in the scraper 3 falls into the ink tank 8 through the openings on both sides. One side of the ink tank 8 is provided with an oil outlet pipe 81 which is communicated with the oil inlet pipe 13;

[0022] The nozzles 12 spray the ink on the coating roller 2. The scraper 3 scrapes the ink on the coating roller 2 evenly and scrapes off the excess ink. The circuit board 5 passes between the coating roller 2 and the pressure roller 7, and the ink on the coating roller 2 is evenly coated on the upper surface of the circuit board 5.

[0023] This device directly sprays the ink evenly on the coating roller and scrapes it evenly again through the hanging plate. The ink is evenly coated on the circuit board, with good effect. Moreover, the excess ink on the scraper drips into the ink tank for recycling, improving the utilization rate of the ink. The overall structure of the device is simple and easy to operate; the distance between the coating roller and the pressure roller is adjustable, suitable for coating ink on circuit boards of different thicknesses, with good practicability.

[0024] During specific use, for the convenience of understanding the present utility model, it is described in conjunction with the accompanying drawings;

[0025] During operation, the ink enters the guide pipe through the inlet pipe. The nozzle at the lower part of the guide pipe evenly sprays the ink onto the coating roller. The right side of the squeegee is axially abutted against the outer peripheral surface of the coating roller along the coating roller. As the coating roller rotates counterclockwise, the squeegee levels the ink on the coating roller and scrapes off the excess ink. When the ink in the squeegee reaches a certain amount, it drips down to the ink tank below along both ends of the squeegee. An outlet pipe is provided on the ink tank and is connected to the inlet pipe. The circuit board to be processed is placed on the conveying roller and moves horizontally to the right. When the circuit board moves between the coating roller and the pressing roller, the pressing roller and the coating roller cooperate to press and convey the circuit board to the right, and the ink on the surface of the coating roller is evenly coated on the upper surface of the circuit board.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A circuit board bottom plate ink coating device, characterized in that: The invention comprises a coating roller (2), an ink supply mechanism (1) arranged above the coating roller (2), a scraper (3) arranged on the left side of the coating roller (2), and a pressing roller (7) arranged below the coating roller (2); conveying rollers (6) are arranged on both sides of the pressing roller (7); the conveying rollers (6) are installed in the middle of a frame (4); a circuit board (5) is placed on the conveying roller (6) and moves horizontally to the right; the pressing roller (7) and the conveying roller (6) have the same direction of rotation; the coating roller (2) and the pressing roller (7) have opposite directions of rotation and the same rotation speed; and the distance between the coating roller (2) and the pressing roller (7) is adjustable; The ink supply mechanism (1) comprises an oil guide pipe (11) arranged parallel to the coating roller (2), the lower part of the oil guide pipe (11) is evenly provided with nozzles (12) along the length direction, and the upper part of the oil guide pipe (11) is connected to an oil inlet pipe (13); The nozzle (12) sprays ink onto the coating roller (2), the scraper (3) scrapes the ink on the coating roller (2) evenly and removes excess ink, the circuit board (5) passes between the coating roller (2) and the pressure roller (7), and the ink on the coating roller (2) is evenly coated on the upper surface of the circuit board (5); The scraper (3) is arranged along the axial direction of the coating roller (2), the cross section of the scraper (3) is in a concave arc shape, the side of the scraper (3) facing the coating roller (2) is pressed against the outer peripheral surface of the coating roller (2), and the other side of the scraper (3) is connected and fixed to the frame (4) via a bracket (31); An ink box (8) is provided below the scraper (3), and the ink in the scraper (3) falls into the ink box (8) along openings on both sides. An oil outlet pipe (81) is provided on one side of the ink box (8) and is connected to the oil inlet pipe (13).

2. A circuit board bottom plate ink coating device according to claim 1, characterized in that: The distance between the coating roller (2) and the pressing roller (7) matches the thickness of the circuit board (5).

3. The circuit board bottom plate ink coating device according to claim 1, characterized in that: Both ends of the coating roller (2) pass through the frame (4) and are connected to a first bearing seat (21); one end of the coating roller (2) passes through the first bearing seat (21) and is connected to a first motor (22).

4. The circuit board bottom plate ink coating device according to claim 1, characterized in that: Both ends of the pressure roller (7) pass through the frame (4) and are connected to a second bearing seat (71); one end of the pressure roller (7) passes through the second bearing seat (71) and is connected to a second motor (72).

5. The circuit board bottom plate ink coating device according to claim 4, characterized in that: The frame (4) is provided with waist-shaped grooves (41) at the front and rear sides thereof, and the two ends of the pressing roller (7) respectively pass through the waist-shaped grooves (41). The pressing roller (7) can adjust the upper and lower positions along the waist-shaped grooves (41).

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