Precise screen printing plate circuit board solder mask printing machine

Abstract

The utility model discloses a precision screen circuit board solder resist printing machine, and relates to the technical field of circuit board processing equipment. The precise screen circuit board solder resist printing machine comprises an L-shaped plate frame, a first rotating shaft and a second rotating shaft are rotationally installed on the L-shaped plate frame, a first turning plate is fixedly installed on the outer wall of the first rotating shaft, a second turning plate is fixedly installed on the outer wall of the second rotating shaft, and positioning grooves are formed in the tops of the first turning plate and the second turning plate correspondingly; a circuit board is arranged in the positioning groove of the first turning plate, an L-shaped lifting plate is arranged on the front side of the L-shaped plate frame, a sliding groove is formed in the L-shaped lifting plate, and a machine box is installed in the sliding groove in a sliding mode. According to the precise screen circuit board resistance welding printing machine, the circuit board on the top of the first turning plate can be turned over to the second turning plate through the turning-over structure, turning over of the circuit board is achieved, manual turning over is not needed, the two sets of printing assemblies can be driven at the same time to print the two sets of circuit boards through the adjusting assembly and the connecting rod, and the circuit board printing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board processing equipment, and in particular to a precision screen printing machine for solder resist printing of circuit boards. Background Technology

[0002] Solder mask is a key process layer in printed circuit board manufacturing. Its main function is to protect the circuitry in non-soldered areas and provide an insulating barrier.

[0003] For example, Chinese patent document CN215898117U discloses a circuit board solder resist printing machine, comprising a printing machine body, a printing table on the upper outer surface of the printing machine body, a protective ring on the upper end of the printing table, a shelf on the upper end of the printing table, a connecting rod on the lower end of the shelf, a rack at the front end of the connecting rod, a rotating handle on one side of the printing table, a rotating shaft at one end of the rotating handle, a gear at one end of the rotating shaft, a rotating seat on the outer side of the rotating shaft, and a control panel on the front outer surface of the printing machine body, with a protective cover on the outer side of the control panel. The rotating handle and rotating shaft facilitate the raising and lowering of the shelf, improving the printing effect of the material; the protective cover reduces wear on the control panel, extending its service life.

[0004] The aforementioned circuit board solder resist printing machine can only print on one side of the circuit board during use. It requires manual flipping to print on the other side of the circuit board, resulting in high labor costs and low processing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a precision screen printing machine for solder resist on circuit boards, so as to solve the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision screen printing circuit board solder resist printing machine, comprising an L-shaped frame, a first rotating shaft and a second rotating shaft rotatably mounted on the L-shaped frame, a first flip plate fixedly mounted on the outer wall of the first rotating shaft, and a second flip plate fixedly mounted on the outer wall of the second rotating shaft, both the first and second flip plates having positioning grooves on their tops, a circuit board being disposed in the positioning groove of the first flip plate, an L-shaped lifting plate being disposed on the front side of the L-shaped frame, the L-shaped lifting plate having a sliding groove, a housing being slidably mounted in the sliding groove, and further comprising a flipping structure mounted on the L-shaped frame, the first rotating shaft, and the second rotating shaft, the flipping structure being used to flip the circuit board on the first flip plate to the second flip plate, a printing assembly mounted on the L-shaped lifting plate and the housing, the printing assembly being used to print on the circuit board, and an adjustment assembly mounted on the L-shaped frame and the L-shaped lifting plate, the adjustment assembly being used to adjust the position of the printing assembly.

[0007] Preferably, the flipping structure includes a first cylinder, a U-shaped rack, a first gear, and a second gear. The first cylinder is fixedly mounted on an L-shaped plate frame, the U-shaped rack is fixedly mounted on the free end of the first cylinder, the first gear is fixedly mounted on the outer wall of the first rotating shaft, and the second gear is fixedly mounted on the outer wall of the second rotating shaft. The U-shaped rack meshes with both the first and second gears, and the diameter of the first gear is smaller than the diameter of the second gear. This allows the circuit board on the top of the first flipping plate to be flipped onto the second flipping plate, thus achieving the flipping of the circuit board without the need for manual flipping.

[0008] Preferably, the printing assembly includes a first rack, a first scraper, a second rack, a second scraper, a fixed shaft, a third gear, a second cylinder, and a printing screen. The first rack and the second rack are slidably mounted on the bottom of the machine housing. The first scraper is fixedly mounted on the bottom end of the first rack, and the second scraper is fixedly mounted on the bottom end of the second rack. The fixed shaft is fixedly mounted on the front and rear inner walls of the machine housing. The third gear is rotatably mounted on the outer wall of the fixed shaft. The second cylinder is fixedly mounted on the top of the machine housing, and the free end of the second cylinder is fixedly mounted to the top end of the first rack. The printing screen is fixedly mounted on the front outer wall of the L-shaped lifting plate. The first rack and the second rack are both meshed with the third gear.

[0009] Preferably, the adjustment assembly includes a third cylinder, a fourth cylinder, and a slider. The third cylinder is fixedly installed on one side of the L-shaped lifting plate, and the slider is fixedly installed on the free end of the fourth cylinder. This assembly can simultaneously drive two sets of printing components to move, enabling printing on two sets of circuit boards and improving the efficiency of circuit board printing.

[0010] Preferably, the L-shaped plate frame has a guide groove, the fourth cylinder is fixedly installed on the top of the guide groove, the slider is slidably installed in the guide groove, and the rear side of the L-shaped lifting plate is fixedly installed with the front side of the slider.

[0011] Preferably, the housing and the printing assembly are arranged in a straight line in pairs, with a connecting rod fixedly installed between the two housings, and the free end of the third cylinder is fixedly installed to the outer wall of one of the housings.

[0012] Preferably, a tripod is fixedly installed on the front side of the L-shaped lifting plate and the top of the printing screen to increase the connection strength between the printing screen and the L-shaped lifting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This precision screen printing machine for solder resist printing circuit boards uses a flipping structure to flip the circuit board on the top of the first flip plate to the second flip plate, thus achieving the flipping of the circuit board without manual flipping. By adjusting the components and connecting rods, it can simultaneously drive two sets of printing components to print on two sets of circuit boards, improving the printing efficiency of circuit boards. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the housing of this utility model;

[0018] Figure 3 This is a flip view of the circuit board of this utility model.

[0019] Reference numerals: 1. L-shaped frame; 2. First pivot; 3. First flap; 4. Second pivot; 5. Second flap; 6. Circuit board; 7. First cylinder; 8. U-shaped rack; 9. First gear; 10. Second gear; 11. L-shaped lifting plate; 12. Machine box; 13. First rack; 14. First scraper; 15. Second rack; 16. Second scraper; 17. Fixed shaft; 18. Third gear; 19. Second cylinder; 20. Connecting rod; 21. Third cylinder; 22. Printing screen; 23. Tripod; 24. Fourth cylinder; 25. Slider. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a precision screen printing machine for solder resist on circuit boards, including an L-shaped frame 1, with a first rotating shaft 2 and a second rotating shaft 4 rotatably mounted on the L-shaped frame 1. A first flip plate 3 is fixedly mounted on the outer wall of the first rotating shaft 2, and a second flip plate 5 is fixedly mounted on the outer wall of the second rotating shaft 4. The top of both the first flip plate 3 and the second flip plate 5 are provided with positioning grooves. A circuit board 6 is disposed in the positioning groove of the first flip plate 3. An L-shaped lifting plate 11 is provided on the front side of the L-shaped frame 1. The L-shaped lifting plate 11 is provided with a sliding groove, in which a housing 12 is slidably mounted. The machine also includes a flipping structure mounted on the L-shaped frame 1, the first rotating shaft 2, and the second rotating shaft 4, which is used to flip the circuit board 6 on the first flip plate 3 onto the second flip plate 5. A printing component is mounted on the L-shaped lifting plate 11 and the housing 12, which is used to print on the circuit board 6. An adjustment component is mounted on the L-shaped frame 1 and the L-shaped lifting plate 11, which is used to adjust the position of the printing component.

[0022] Furthermore, the flipping structure includes a first cylinder 7, a U-shaped rack 8, a first gear 9, and a second gear 10. The first cylinder 7 is fixedly mounted on the L-shaped frame 1, the U-shaped rack 8 is fixedly mounted on the free end of the first cylinder 7, the first gear 9 is fixedly mounted on the outer wall of the first rotating shaft 2, and the second gear 10 is fixedly mounted on the outer wall of the second rotating shaft 4. The U-shaped rack 8 meshes with both the first gear 9 and the second gear 10, and the diameter of the first gear 9 is smaller than the diameter of the second gear 10. When the first cylinder 7 is activated, the free end of the first cylinder 7 drives the U-shaped rack 8 to descend. The descent of the U-shaped rack 8 drives the first gear 9, the first rotating shaft 2, the first flip plate 3, and the circuit board 6 to rotate counterclockwise, and drives the second gear 10, the second rotating shaft 4, and the second flip plate 5 to rotate clockwise, so that the first flip plate 3 meshes with the first gear 9 and the second gear 10. The tops of the two flip plates 5 are in contact with each other. Since the diameter of the first gear 9 is smaller than the diameter of the second gear 10, when the first flip plate 3 and the second flip plate 5 are in contact with each other, the first flip plate 3 and the second flip plate 5 are tilted to the left, so that the circuit board 6 in the positioning groove of the first flip plate 3 can fall into the positioning groove of the second flip plate 5. Then the first cylinder 7 is activated. The free end of the first cylinder 7 drives the U-shaped rack 8 to rise. The rise of the U-shaped rack 8 drives the first gear 9, the first rotating shaft 2, and the first flip plate 3 to rotate clockwise, and drives the second gear 10, the second rotating shaft 4, the second flip plate 5, and the circuit board 6 to rotate counterclockwise, so that the second flip plate 5 and the circuit board 6 are horizontally positioned. The circuit board 6 on the top of the first flip plate 3 can be flipped onto the second flip plate 5, and the circuit board 6 can be flipped without manual flipping.

[0023] Furthermore, the printing assembly includes a first rack 13, a first scraper 14, a second rack 15, a second scraper 16, a fixed shaft 17, a third gear 18, a second cylinder 19, and a printing screen 22. The first rack 13 and the second rack 15 are slidably mounted on the bottom of the housing 12. The first scraper 14 is fixedly mounted on the bottom end of the first rack 13, and the second scraper 16 is fixedly mounted on the bottom end of the second rack 15. The fixed shaft 17 is fixedly mounted on the front and rear inner walls of the housing 12. The third gear 18 is rotatably mounted on the outer wall of the fixed shaft 17. The second cylinder 19 is fixedly mounted on the top of the housing 12, with its free end connected to the top end of the first rack 13. The printing screen 22 is fixedly installed on the front outer wall of the L-shaped lifting plate 11. The first rack 13 and the second rack 15 are both meshed with the third gear 18. The second cylinder 19 is activated, and the free end of the second cylinder 19 drives the first rack 13 and the first scraper 14 to descend, so that the first scraper 14 contacts the printing screen 22 and pours the solder resist ink onto the printing screen 22 between the first scraper 14 and the second scraper 16. The third cylinder 21 is activated, and the free end of the third cylinder 21 moves to the right relative to the housing 12, the first rack 13, and the first scraper 14, so that the first scraper 14 pushes the solder resist ink, which can coat the solder resist ink onto the surface of the circuit board 6.

[0024] Furthermore, the adjustment assembly includes a third cylinder 21, a fourth cylinder 24, and a slider 25. The third cylinder 21 is fixedly installed on one side of the L-shaped lifting plate 11, and the slider 25 is fixedly installed on the free end of the fourth cylinder 24. When the fourth cylinder 24 is activated, the free end of the fourth cylinder 24 drives the slider 25, the L-shaped lifting plate 11, the machine box 12, and the printing assembly to descend, so that the printing screen 22 of the printing assembly comes into contact with the circuit board 6, which can print on two sets of circuit boards 6, thereby improving the circuit board printing efficiency.

[0025] Furthermore, the L-shaped plate frame 1 has a guide groove, the fourth cylinder 24 is fixedly installed on the top of the guide groove, the slider 25 is slidably installed in the guide groove, and the rear side of the L-shaped lifting plate 11 is fixedly installed with the front side of the slider 25.

[0026] Furthermore, the housing 12 and the printing assembly are arranged in a straight line, with a connecting rod 20 fixedly installed between the two housings 12, and the free end of the third cylinder 21 is fixedly installed to the outer wall of one of the housings 12.

[0027] Furthermore, a tripod 23 is fixedly installed on the front side of the L-shaped lifting plate 11 and the top of the printing screen 22 to increase the connection strength between the printing screen 22 and the L-shaped lifting plate 11.

[0028] Working principle: The circuit board 6 is placed in the positioning groove on the top of the first flip plate 3. The fourth cylinder 24 is activated, and its free end drives the slider 25, L-shaped lifting plate 11, machine box 12, and printing assembly to descend, so that the printing screen 22 of the printing assembly contacts the circuit board 6. The second cylinder 19 is activated, and its free end drives the first rack 13 and the first scraper 14 to descend, so that the first scraper 14 contacts the printing screen 22, and the solder resist ink is poured into the first... On the printing screen 22 between the scraper 14 and the second scraper 16, the third cylinder 21 is activated. The free end of the third cylinder 21 moves to the right relative to the housing 12, the first rack 13, and the first scraper 14, causing the first scraper 14 to push the solder resist ink, thus coating the solder resist ink onto the surface of the circuit board 6. The fourth cylinder 24 is activated. The free end of the fourth cylinder 24 drives the slider 25, the L-shaped lifting plate 11, the housing 12, and the printing assembly to rise. The first cylinder 7 is activated. The free end drives the U-shaped rack 8 to descend. The descent of the U-shaped rack 8 drives the first gear 9, the first rotating shaft 2, the first flap 3, and the circuit board 6 to rotate counterclockwise, and drives the second gear 10, the second rotating shaft 4, and the second flap 5 to rotate clockwise, so that the tops of the first flap 3 and the second flap 5 come into contact with each other. Since the diameter of the first gear 9 is smaller than the diameter of the second gear 10, the first flap 3 and the second flap 5 tilt to the left when they come into contact. The circuit board 6 in the positioning slot of the first flip plate 3 can fall into the positioning slot of the second flip plate 5. Then, the first cylinder 7 is activated. The free end of the first cylinder 7 drives the U-shaped rack 8 to rise. The rise of the U-shaped rack 8 drives the first gear 9, the first rotating shaft 2, and the first flip plate 3 to rotate clockwise, and drives the second gear 10, the second rotating shaft 4, the second flip plate 5, and the circuit board 6 to rotate counterclockwise, so that the second flip plate 5 and the circuit board 6 are set horizontally, thus flipping the circuit board 6.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A precision screen printing machine for solder resist on circuit boards, comprising an L-shaped frame (1), wherein a first rotating shaft (2) and a second rotating shaft (4) are rotatably mounted on the L-shaped frame (1), a first flip plate (3) is fixedly mounted on the outer wall of the first rotating shaft (2), and a second flip plate (5) is fixedly mounted on the outer wall of the second rotating shaft (4), both the first flip plate (3) and the second flip plate (5) have positioning grooves on their tops, a circuit board (6) is disposed in the positioning groove of the first flip plate (3), an L-shaped lifting plate (11) is disposed on the front side of the L-shaped frame (1), the L-shaped lifting plate (11) has a sliding groove, and a housing (12) is slidably mounted in the sliding groove, characterized in that, Also includes: The flipping structure is installed on the L-shaped board frame (1), the first rotating shaft (2), and the second rotating shaft (4). The flipping structure is used to flip the circuit board (6) on the first flip plate (3) onto the second flip plate (5). The printing assembly is installed on the L-shaped lifting plate (11) and the housing (12), and is used to print on the circuit board (6); The adjustment components are installed on the L-shaped plate frame (1) and the L-shaped lifting plate (11). The adjustment components are used to adjust the position of the printing components.

2. The precision screen printing machine for solder resist on circuit boards according to claim 1, characterized in that: The flipping structure includes a first cylinder (7), a U-shaped rack (8), a first gear (9), and a second gear (10). The first cylinder (7) is fixedly installed on the L-shaped frame (1). The U-shaped rack (8) is fixedly installed on the free end of the first cylinder (7). The first gear (9) is fixedly installed on the outer wall of the first rotating shaft (2). The second gear (10) is fixedly installed on the outer wall of the second rotating shaft (4). The U-shaped rack (8) meshes with both the first gear (9) and the second gear (10). The diameter of the first gear (9) is smaller than the diameter of the second gear (10).

3. The precision screen printing machine for solder resist on circuit boards according to claim 2, characterized in that: The printing assembly includes a first rack (13), a first scraper (14), a second rack (15), a second scraper (16), a fixed shaft (17), a third gear (18), a second cylinder (19), and a printing screen (22). The first rack (13) and the second rack (15) are slidably mounted on the bottom of the housing (12). The first scraper (14) is fixedly mounted on the bottom end of the first rack (13), and the second scraper (16) is fixedly mounted on the bottom end of the second rack (15). The fixed shaft (17) is fixedly installed on the inner wall of the front and rear sides of the machine box (12). The third gear (18) is rotatably installed on the outer wall of the fixed shaft (17). The second cylinder (19) is fixedly installed on the top of the machine box (12). The free end of the second cylinder (19) is fixedly installed on the top of the first rack (13). The printing screen (22) is fixedly installed on the outer wall of the front side of the L-shaped lifting plate (11). The first rack (13) and the second rack (15) are both meshed with the third gear (18).

4. A precision screen printing machine for solder resist on circuit boards according to claim 3, characterized in that: The adjustment assembly includes a third cylinder (21), a fourth cylinder (24), and a slider (25). The third cylinder (21) is fixedly installed on one side of the L-shaped lifting plate (11), and the slider (25) is fixedly installed on the free end of the fourth cylinder (24).

5. A precision screen printing machine for solder resist on circuit boards according to claim 4, characterized in that: The L-shaped plate frame (1) has a guide groove, the fourth cylinder (24) is fixedly installed on the top of the guide groove, the slider (25) is slidably installed in the guide groove, and the rear side of the L-shaped lifting plate (11) is fixedly installed with the front side of the slider (25).

6. A precision screen printing machine for solder resist on circuit boards according to claim 5, characterized in that: The two machine boxes (12) and the printing components are arranged in a straight line. A connecting rod (20) is fixedly installed between the two machine boxes (12). The free end of the third cylinder (21) is fixedly installed on the outer wall of one of the machine boxes (12).

7. A precision screen printing machine for solder resist on circuit boards according to claim 6, characterized in that: A tripod (23) is fixedly installed on the front side of the L-shaped lifting plate (11) and the top of the printing screen (22).

Images