Circuit board vacuumizing device

Abstract

The utility model relates to the technical field of circuit board processing, and discloses a circuit board vacuumizing device, which comprises an installation platform, a box body, a cover plate, an electric control box, two groups of vacuum pumps and a vacuum air valve, the electric control box and the vacuum air valve are arranged at the upper end of one side of the box body, and the box body and the two groups of vacuum pumps are arranged on the upper surface of the installation platform. The two groups of vacuum pumps are communicated with main air pipes; through the cooperation of the box body, the cover plate, the vacuum pumps, the electric control box and the vacuum air valve, the double vacuum pumps can improve the efficiency of vacuumizing the interior of the box body, so that the vacuumizing time is shortened, the vacuumizing degree is convenient to adjust, the problem of bubble residues in ink of a high-thickness solder mask layer is solved, the appearance of a PCB is improved, the performance of the PCB is improved, and the production cost is reduced. And meanwhile, convenience is improved, the overall adaptability of the device is high, and use of products of various specifications can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a circuit board vacuum pumping device. Background Art

[0002] During the production process of PCB (printed circuit board), ink bubbles after solder mask printing are a common problem. Especially when dealing with thick copper plates, these problems not only affect the appearance of the circuit board, but may also affect its electrical performance and reliability. To solve this problem, the technical solutions in the industry include using a vacuum machine to perform vacuum pumping on the printed board to discharge the bubbles in the ink;

[0003] In the prior art, the Chinese utility model content with the publication number: CN201821310032.1 discloses a circuit board vacuum degassing device, including: a box body, a first plate placing table, a second plate placing table, a vacuum chamber and a swing arm. The first plate placing table and the second plate placing table are arranged side by side on the top cover of the box body. The vacuum chamber is pivotally connected to the top of the box body through the swing arm and switches between a first position and a second position. When the vacuum chamber is in the first position, it rotates to the first plate placing table, and when the vacuum chamber is in the second position, it rotates to the second plate placing table. This utility model can perform degassing operations on thick copper solder mask plates after printing solder mask ink, remove the bubbles existing in the ink between the lines, thereby ensuring the qualified rate of products and reducing the production cost;

[0004] Currently, the devices for discharging ink bubbles after PCB solder mask printing mainly have some deficiencies: the vacuum pumping efficiency is not high, the vacuum degree is unstable, and the adaptability of the device is insufficient and cannot meet the use of products with various specifications. Therefore, we need to propose a circuit board vacuum pumping device. Utility Model Content

[0005] The purpose of the present utility model is to provide a circuit board vacuum pumping device to solve the problem of bubble residue in the ink of a high-thickness solder mask layer, improve the appearance of the PCB, ensure the performance of the PCB, and at the same time improve the vacuum pumping efficiency of the device, with a stable vacuum degree, a wide application range of the device, which can meet the use of products with different specifications, improve the flexibility of the device, and facilitate the multi-scenario transfer and use of the device, so as to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical solutions: A circuit board vacuum pumping device, including an installation platform, further including a box body, a cover plate, an electric control box, two groups of vacuum pumps and a vacuum valve. The electric control box and the vacuum valve are both installed at the upper end of one side of the box body. The box body and the two groups of vacuum pumps are both installed on the upper surface of the installation platform. Both groups of vacuum pumps are connected to a main air pipe, and both main air pipes are connected to a tee pipe fitting. A connecting air pipe connected to the tee pipe fitting is provided on the vacuum valve. Multiple groups of buckle locks are provided on the upper surface of the cover plate, and buckle blocks lapping with the multiple groups of buckle locks are provided at the upper end of the outer side of the box body. Two groups of support mechanisms are symmetrically provided on the lower surface of the installation platform.

[0007] Preferably, the electric control box is electrically connected to the two groups of vacuum pumps respectively. A manual valve is provided at one end of the vacuum valve. A positioning area for installing the two groups of vacuum pumps is provided on the upper surface of the installation platform.

[0008] Preferably, two groups of universal moving wheels and two groups of one-way moving wheels are installed on the lower surface of the installation platform. The two groups of universal moving wheels and the two groups of one-way moving wheels are arranged in a rectangular array.

[0009] Preferably, a support skeleton is fixedly connected to the inner cavity of the box body. An installation frame is movably connected to the support skeleton, and a discharge rack for carrying circuit boards is arranged in the installation frame.

[0010] Preferably, the discharge rack includes two groups of baffles and multiple groups of support beams. The multiple groups of support beams are all fixedly connected to the bottom of the installation frame. The two groups of baffles are fixedly connected to both sides of the inner cavity of the installation frame. Circuit board card slots are provided on the upper surfaces of the multiple groups of support beams and on the opposite sides of the two groups of baffles.

[0011] Preferably, the buckle lock includes a fixed block fixedly connected to the upper surface of the cover plate. A handle is rotatably connected to the fixed block. One end of the handle is rotatably connected to a buckle ring lapping with the buckle block. The handle is arranged in an L shape.

[0012] Preferably, two groups of handles are installed on the upper surface of the cover plate. Anti-slip layers are provided on the outer sides of the two groups of handles. A sealing gasket is provided on the lower surface of the cover plate.

[0013] Preferably, an armrest frame is fixedly connected to the lower surface of the installation platform. The upper end of the armrest frame is located above the two groups of vacuum pumps. The width of the box body is the same as the width of the installation platform.

[0014] Preferably, both groups of support mechanisms include a first hinge seat and two groups of second hinge seats. An electric push rod is rotatably installed on the first hinge seat. Two groups of support plates are rotatably connected to the two groups of second hinge seats respectively. A connecting rod fixedly connected to the telescopic end of the electric push rod is rotatably connected to the opposite sides of the two groups of support plates.

[0015] Preferably, the height of the support plate is greater than that of the moving wheels, and the support plate can be turned 0-90 degrees around the second hinge seat as the axis.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model mainly through the cooperation among the box body, the cover plate, the vacuum pump, the electric control box and the vacuum valve, can improve the efficiency of evacuating the inside of the box body by using a double-vacuum pump, thereby reducing the evacuation time, and the degree of vacuum during evacuation is convenient to adjust, solving the problem of bubble residue in the high-thickness solder resist ink, improving the appearance of the PCB, thus improving the performance of the PCB, and at the same time improving the convenience. The overall adaptability of the device is relatively strong and can meet the use of products of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the opened cover plate structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the bottom structure of the installation platform of the present utility model;

[0021] Figure 4 is a schematic diagram of the internal structure of the box body of the present utility model.

[0022] In the figure: 1. Installation platform; 2. Handrail frame; 3. Box body; 4. Support skeleton; 5. Installation frame; 6. Baffle; 7. Support beam; 8. Circuit board slot; 9. Electric control box; 10. Vacuum valve; 11. Vacuum pump; 12. Connecting air pipe; 13. Three-way pipe fitting; 14. Main air pipe; 15. Manual valve; 16. Cover plate; 17. Fixed block; 18. Handle; 19. Buckle; 20. Handle; 21. Buckle ring; 22. Universal moving wheel; 23. One-way moving wheel; 24. Support mechanism; 241. First hinge seat; 242. Electric push rod; 243. Link rod; 244. Second hinge seat; 245. Support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4, the present utility model provides a technical solution: a circuit board vacuum pumping device, which includes an installation platform 1, and also includes a box body 3, a cover plate 16, an electric control box 9, two groups of vacuum pumps 11 and a vacuum valve 10. The electric control box 9 and the vacuum valve 10 are both installed at the upper end of one side of the box body 3. The box body 3 and the two groups of vacuum pumps 11 are both installed on the upper surface of the installation platform 1. The two groups of vacuum pumps 11 are both connected to a main air pipe 14. The two groups of main air pipes 14 are both connected to a tee pipe fitting 13. The vacuum valve 10 is provided with a connecting air pipe 12 connected to the tee pipe fitting 13. The upper surface of the cover plate 16 is provided with a plurality of buckle locks. The upper end of the outer side of the box body 3 is provided with buckle blocks 19 that overlap with the plurality of buckle locks. The lower surface of the installation platform 1 is symmetrically provided with two groups of support mechanisms 24. The electric control box 9 is provided with a timer, a digital display negative pressure gauge, a start button, a stop button and a buzzer.

[0025] In this embodiment, as Figure 1 shown, the electric control box 9 is electrically connected to the two groups of vacuum pumps 11 respectively. One end of the vacuum valve 10 is provided with a manual valve 15. The upper surface of the installation platform 1 is provided with a positioning area for the installation of the two groups of vacuum pumps 11. Through the extended setting of the installation platform 1, it is convenient to install the vacuum pumps 11.

[0026] In a further preferred embodiment, as Figure 3 shown, two groups of universal moving wheels 22 and two groups of one-way moving wheels 23 are installed on the lower surface of the installation platform 1. The two groups of universal moving wheels 22 and the two groups of one-way moving wheels 23 are arranged in a rectangular array. The universal moving wheels 22 and the one-way moving wheels 23 are used to improve the overall flexibility of the device, so that the device can meet the transfer and use in different scenarios.

[0027] Furthermore, as Figure 4 shown, a support skeleton 4 is fixedly connected to the inner cavity of the box body 3. An installation frame 5 is movably connected to the support skeleton 4, and a discharge rack for carrying circuit boards is arranged in the installation frame 5. The support skeleton 4 is used to improve the service life of the box body 3 and prevent the box body 3 from deforming after vacuum pumping.

[0028] Preferably, as Figure 4 shown, the discharge rack includes two groups of baffles 6 and a plurality of support beams 7. The plurality of support beams 7 are all fixedly connected to the bottom of the installation frame 5. The two groups of baffles 6 are fixedly connected to both sides of the inner cavity of the installation frame 5. The upper surfaces of the plurality of support beams 7 and the opposite sides of the two groups of baffles 6 are both provided with circuit board card slots 8. Through the support beams 7 and the baffles 6 on the discharge rack, it is convenient to put the products to be vacuum pumped in, improve the stability of the products during vacuum pumping, and facilitate the vacuum treatment of multiple products, thus improving the efficiency.

[0029] In addition, as Figure 2As shown, the buckle includes a fixed block 17 fixedly connected to the upper surface of the cover plate 16. The fixed block 17 is rotatably connected to a handle 18. One end of the handle 18 is rotatably connected to a buckle ring 21 that overlaps with a buckle block 19. The handle 18 is arranged in an L shape. By rotating the handle 18, the position of the buckle ring 21 is adjusted, so as to facilitate the buckling of the buckle ring 21 on the buckle block 19, facilitate the fixation of the cover plate 16, improve the stability of the fixation of the cover plate 16, thereby ensuring the vacuum pumping effect. And three groups of buckle blocks 19 are arranged on the long side of the box body 3, and two groups of buckle blocks 19 are installed on the short side of the box body 3.

[0030] In this embodiment, as Figure 2 shown, two handles 20 are installed on the upper surface of the cover plate 16. Anti-slip layers are arranged on the outer sides of the two handles 20. A sealing gasket is arranged on the lower surface of the cover plate 16. The cover plate 16 can be conveniently opened and closed through the handles 20, improving the efficiency of removing the cover plate 16. At the same time, the sealing performance between the box body 3 and the cover plate 16 is improved by using the sealing gasket (not shown in the figure), thereby improving the vacuum pumping effect.

[0031] In a further preferred embodiment, as Figure 1 shown, an armrest frame 2 is fixedly connected to the lower surface of the installation platform 1. The upper end of the armrest frame 2 is arranged above the two vacuum pumps 11. The width of the box body 3 is the same as the width of the installation platform 1. The armrest frame 2 is used to conveniently move the device quickly, improving the convenience of the device.

[0032] Furthermore, as Figure 3 shown, the two support mechanisms 24 both include a first hinge seat 241 and two second hinge seats 244. An electric push rod 242 is rotatably installed on the first hinge seat 241. Two support plates 245 are rotatably connected to the two second hinge seats 244 respectively. A connecting rod 243 fixedly connected to the telescopic end of the electric push rod 242 is rotatably connected to the opposite sides of the two support plates 245. By the telescopic movement of the telescopic end of the electric push rod 242, it is convenient to control the angle adjustment of the support plate 245, and then it is convenient to lift the device, improving the stability of the device.

[0033] Preferably, as Figure 3 shown, the height of the support plate 245 is greater than the height of the moving wheels. The support plate 245 can be flipped 0 - 90 degrees around the second hinge seat 244 as the axis. By using the support plate 245 to contact the ground, the single-direction moving wheels 23 and the universal moving wheels 22 are separated from the ground, thereby improving the stability of the device during the vacuum pumping process, preventing the device from sliding, and improving the efficiency of eliminating bubbles.

[0034] During use, place the product that needs to be evacuated in the circuit board card slot 8 on the support beam 7 and the baffle 6, and then place the entire mounting frame 5 on the support skeleton 4 inside the box body 3, which facilitates the placement of PCBs of different specifications, improves the adaptability of the device, cover the cover plate 16, rotate the handle 18 to make the buckle 21 snap into the groove of the buckle block 19, and then fasten the cover plate 16 on the upper surface of the box body 3, so as to ensure the sealing between the box body 3 and the cover plate 16. Control the vacuum pump 11 through the electric control box 9 to evacuate the inside of the box body 3, and it is convenient to adjust the vacuum degree through the electric control box 9, and the whole evacuation process can be shortened. When the negative pressure reaches the set value, start timing. After reaching the set duration, the buzzer sounds and controls the vacuum pump 11 to stop working, so as to improve the appearance of the PCB, eliminate the bubbles in the solder mask ink, and ensure the performance of the PCB. When evacuating, the electric push rod 242 controls the support plate 245 to unfold, which facilitates the lifting of the mounting platform 1 and improves the stability of the device during evacuation. The use of universal moving wheels and single-direction moving wheels 23 improves the overall mobility of the device and meets the use in different scenarios. When relieving pressure, the vacuum pump 11 stops working, open the outer manual valve 15, and the outside air enters the inside of the box body 3 through the manual valve 15 to complete the pressure relief, and then open the cover plate 16 to take out the product.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board vacuuming device, comprising a mounting platform (1), characterized in that: It also includes a box body (3), a cover plate (16), an electric control box (9), two sets of vacuum pumps (11) and a vacuum air valve (10); The electric control box (9) and the vacuum air valve (10) are both installed on the upper end of one side of the box body (3), and the box body (3) and the two sets of vacuum pumps (11) are both installed on the upper surface of the installation platform (1); The two groups of vacuum pumps (11) are both connected to a main air pipe (14), the two groups of main air pipes (14) are both connected to a three-way pipe fitting (13), and the vacuum air valve (10) is provided with a connecting air pipe (12) connected to the three-way pipe fitting (13); The upper surface of the cover plate (16) is provided with a plurality of groups of buckle locks, the upper outer end of the box body (3) is provided with a buckle block (19) overlapped with the plurality of groups of buckle locks, and the lower surface of the installation platform (1) is symmetrically provided with two groups of support mechanisms (24).

2. The circuit board vacuum pumping device according to claim 1, characterized in that: The electric control box (9) is electrically connected to two groups of vacuum pumps (11) respectively, a manual valve (15) is provided at one end of the vacuum air valve (10), and a positioning area for installing the two groups of vacuum pumps (11) is provided on the upper surface of the installation platform (1).

3. The circuit board vacuuming device according to claim 2, characterized in that: Two groups of universal moving wheels (22) and two groups of unidirectional moving wheels (23) are installed on the lower surface of the installation platform (1), and the two groups of universal moving wheels (22) and the two groups of unidirectional moving wheels (23) are arranged in a rectangular array.

4. The circuit board vacuuming device according to claim 3, characterized in that: The inner cavity of the box body (3) is fixedly connected to a support frame (4), a mounting frame (5) is movably connected to the support frame (4), and a discharge frame for carrying a circuit board is arranged inside the mounting frame (5).

5. The circuit board vacuuming device according to claim 4, characterized in that: The discharge rack comprises two groups of baffles (6) and multiple groups of support beams (7), the multiple groups of support beams (7) are fixedly connected to the bottom of the mounting rack (5), the two groups of baffles (6) are fixedly connected to the two sides of the inner cavity of the mounting rack (5), and the upper surfaces of the multiple groups of support beams (7) and the opposite sides of the two groups of baffles (6) are provided with circuit board slots (8).

6. The circuit board vacuuming device according to claim 5, characterized in that: The buckle lock comprises a fixing block (17) fixedly connected to the upper surface of the cover plate (16); the fixing block (17) is rotatably connected to a handle (18); one end of the handle (18) is rotatably connected to a buckle ring (21) overlapped with the buckle block (19); and the handle (18) is arranged in an L shape.

7. The circuit board vacuum extraction device according to claim 6, characterized in that: Two groups of handles (20) are installed on the upper surface of the cover plate (16), and anti-slip layers are arranged on the outer sides of the two groups of handles (20). A sealing pad is arranged on the lower surface of the cover plate (16).

8. The circuit board vacuuming device according to claim 7, characterized in that: A handrail frame (2) is fixedly connected to the lower surface of the installation platform (1), and the upper end of the handrail frame (2) is arranged above two groups of vacuum pumps (11). The width of the box body (3) is the same as the width of the installation platform (1).

9. The circuit board vacuuming device according to claim 8, characterized in that: The two groups of support mechanisms (24) each comprise a first hinge seat (241) and two groups of second hinge seats (244); an electric push rod (242) is rotatably mounted on the first hinge seat (241); the two groups of the second hinge seats (244) are rotatably connected to support plates (245); and opposite sides of the two groups of support plates (245) are rotatably connected to connecting rods (243) fixedly connected to the telescopic ends of the electric push rods (242).

10. The circuit board vacuuming device according to claim 9, characterized in that: The height of the support plate (245) is greater than the height of the moving wheel, and the support plate (245) can be turned over by 0-90 degrees with the second hinge seat (244) as the axis.

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