PCB (Printed Circuit Board) solder mask printing tool

Abstract

The utility model discloses a PCB solder mask printing tool which comprises a rack, a first supporting plate used for containing a PCB is rotationally connected to the rack, the first supporting plate is hollow, a plurality of adsorption holes are formed in the upper surface of the first supporting plate and used for adsorbing the PCB through negative pressure, the PCB solder mask printing tool further comprises a negative pressure device, and the negative pressure device is used for providing a negative pressure environment for the adsorption holes; the device further comprises a second supporting plate, the first supporting plate rotates to drive the PCB to be turned over and transferred to the second supporting plate, and the second supporting plate is used for supporting the PCB. According to the utility model, the PCB can be turned over to print double surfaces, so that the processing time can be greatly saved, the printing efficiency can be improved, the working intensity of operators can be reduced, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board production, in particular to a PCB board solder resist printing tool. Background Art

[0002] In the PCB manufacturing process, in order to protect the copper surface, it is necessary to print solder resist on the non-welding copper surface. The existing printing equipment is single-sided printing. During the printing operation, one side needs to be printed first and the ink on this side needs to be dried before the operator turns to the other side to start printing. This printing method is complicated to operate, the operator's workload is large, and the efficiency is low, which is not conducive to batch processing. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a PCB board solder mask printing tool to solve the problem of low printing efficiency in the current solder mask printing.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A solder mask printing tool for a PCB board comprises a frame, a first support plate for placing a PCB board is rotatably connected to the frame, the first support plate is hollow inside, a plurality of adsorption holes are opened on the upper surface of the first support plate, the adsorption holes are used for negative pressure adsorption of the PCB board, and a negative pressure device is also included, the negative pressure device is used for providing a negative pressure environment for the adsorption holes; and a second support plate is also included, the first support plate rotates to drive the PCB board to turn over and transfer to the second support plate, and the second support plate is used to support the PCB board.

[0006] Principle of the utility model:

[0007] When printing solder mask, first place the PCB board on the first support plate for printing. After the printing of this side is completed, the PCB board is attached to the first support plate under the action of negative pressure adsorption of the adsorption holes. Then, rotate the first support plate to drive the PCB board to rotate synchronously, and transfer the PCB board to the second support plate. At this time, the unprinted side of the PCB board faces upward, and then the PCB board is separated from the first support plate, and the PCB board can be placed on the second support plate to print the other side.

[0008] Compared with the prior art, the utility model has the following effects:

[0009] This solution can turn the PCB board over. After one side is printed, turn it over to the other side to continue printing. After both sides are printed, they can be dried together. This setting can greatly save processing time and improve printing efficiency on the one hand, and reduce the workload of operators on the other hand, and is highly practical.

[0010] As a preferred embodiment of the utility model, the frame is rotatably connected with a rotating shaft, the first support plate and the second support plate are located on both sides of the rotating shaft, the first support plate is fixed to the rotating shaft on one side close to the rotating shaft, and the second support plate is parallel to and lower than the first support plate. In this solution, the second support plate is parallel to and lower than the first support plate, so that after the first support plate is rotated 180°, the first support plate is just flipped over to the top of the second support plate, so that when the PCB board is transferred to the second support plate, it can be transferred in parallel without bending the PCB board, and damage to the PCB board can be avoided.

[0011] As a preferred embodiment of the utility model, the upper surface of the first support plate is provided with a first positioning plate for positioning the PCB board, the first positioning plate is L-shaped, and one corner of the PCB board is aligned with the corner of the first positioning plate. In this solution, the first positioning plate is set to be L-shaped, and when the operator places the PCB board on the first support plate, the two sides of the first positioning plate can simultaneously position the two sides of the PCB board, and the positioning is fast.

[0012] As a preferred embodiment of the utility model, the upper surface of the first support plate is also slidably connected with a first limit assembly for limiting the movement of the PCB board, and the first limit assembly includes a first x-axis limit plate and a first y-axis limit plate respectively parallel to the two sides of the first positioning plate, and the first x-axis limit plate and the first y-axis limit plate slide in the vertical direction of the corresponding sides respectively. When using this solution, after aligning one corner of the PCB board at the corner of the first positioning plate, adjust the position of the first x-axis limit plate and the first y-axis limit plate, and the space formed between the first x-axis limit plate, the first y-axis limit plate and the first positioning plate just fits the size of the PCB board. By adjusting the first limit assembly, this solution can adapt to the sizes of different PCB boards and has strong adaptability.

[0013] As a preferred embodiment of the utility model, a slider is fixed to the lower side of the first x-axis limit plate and the first y-axis limit plate, and a slide groove is respectively opened on the upper surface of the first support plate corresponding to the sliders on the lower side of the first x-axis limit plate and the first y-axis limit plate, and the slider is slidably connected in the slide groove. In this solution, the slide groove cooperates with the slider to guide the movement of the first x-axis limit plate and the first y-axis limit plate, making the adjustment process more stable.

[0014] As a preferred embodiment of the utility model, the limit assembly also includes a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are both fixed to the upper surface of the first support plate, the first mounting seat is threadedly connected with a first adjustment rod, the first adjustment rod is rotatably connected to the first x-axis limit plate, and the second mounting seat is threadedly connected with a second adjustment rod, the second adjustment rod is rotatably connected to the first y-axis limit plate. In this solution, by rotating the first adjustment rod and the second adjustment rod, the first adjustment rod 6 and the second adjustment rod 9 move forward or backward, thereby driving the first x-axis limit plate 7 and the first y-axis limit plate 10 to move forward or backward along the slide groove, and the adjustment method is simple and easy to operate.

[0015] As a preferred embodiment of the utility model, a second positioning plate is installed on the upper surface of the second support plate corresponding to the first positioning plate, and the structure of the second positioning plate is the same as that of the first positioning plate. The second positioning plate provided in this solution can be used for positioning when the PCB board is transferred to the second support plate.

[0016] As a preferred embodiment of the utility model, a plurality of support pins are evenly arranged on the upper surface of the second support plate along the length direction of the two edges of the second positioning plate on the inner side of the two edges of the second positioning plate, and the support pins are used to support the edge of the PCB board. This solution supports the edge of the PCB board by the support pins, which can prevent the side of the PCB board printed with ink from contacting the upper surface of the second support plate, thereby avoiding damage to the side printed with ink.

[0017] As a preferred embodiment of the utility model, the upper surface of the second support plate is provided with a second limit assembly corresponding to the first limit assembly, and the second limit assembly includes a second x-axis limit plate and a second y-axis limit plate respectively parallel to the two sides of the second positioning plate, and the second x-axis limit plate and the second y-axis limit plate respectively slide in the vertical direction of the corresponding side. This solution can adapt to the size of different PCB boards by adjusting the second limit assembly, and has strong adaptability.

[0018] As a preferred embodiment of the utility model, the cross-sections of the second x-axis limit plate and the second y-axis limit plate are both L-shaped, and a plurality of support pins are provided on the horizontal plates of the second x-axis limit plate and the second y-axis limit plate. In this solution, since the second x-axis limit plate and the second y-axis limit plate are close to the edge of the PCB board, the support pins are provided on their horizontal plates to support the edge of the PCB board and prevent damage to the side printed with ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a top view of an embodiment of the utility model;

[0021] Figure 3It is a front view of an embodiment of the utility model;

[0022] Figure 4 It is a front view of the PCB board transferred to the second supporting plate in the embodiment of the utility model.

[0023] Reference numerals include:

[0024] Frame 1, rotating shaft 2, first support plate 3, first positioning plate 4, first mounting seat 5, first adjusting rod 6, first x-axis limit plate 7, second mounting seat 8, second adjusting rod 9, first y-axis limit plate 10, adsorption hole 11, second support plate 12, second positioning plate 13, support needle 14, second x-axis limit plate 15, second y-axis limit plate 16, PCB board 17. DETAILED DESCRIPTION

[0025] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0026] In the description of the present application, the terms "front", "rear", "upper", "lower", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0027] See also Figure 1 and Figure 2 As shown, the present embodiment discloses a PCB board solder mask printing tool, including a frame 1, a first support plate 3 for placing a PCB board 17 is rotatably connected to the frame 1, specifically, a rotating shaft 2 is rotatably connected to the frame 1, one end of the rotating shaft 2 is connected to a servo motor, the servo motor is used to drive the rotating shaft 2 to rotate, one end of the first support plate 3 is fixed on the rotating shaft 2, the first support plate 3 is hollow inside, and a negative pressure device is also installed on the frame 1, the negative pressure device is a vacuum machine, the vacuum machine is connected to the inside of the first support plate 3 through a vacuum pipe, and is used to provide a negative pressure environment, a plurality of adsorption holes 11 are opened on the upper surface of the first support plate 3, after the PCB board 17 is placed on the upper surface of the first support plate 3, the PCB board 17 is adsorbed on the upper surface of the first support plate 3 through the adsorption holes 11; and also includes a second support plate 12 installed on the frame 1, the second support plate 12 is located on a side of the first support plate 3 close to the rotating shaft 2, the second support plate 12 is parallel to and lower than the first support plate 3, as shown in FIG. Figure 3 As shown;

[0028] When printing solder mask, first place the PCB board 17 on the first support plate 3 for printing. After one side of the PCB board 17 is printed, start the negative pressure device, and the PCB board 17 rotates 180° with the first support plate 3. The first support plate 3 is flipped over to the top of the second support plate 12. Then, turn off the negative pressure device, separate the PCB board 17 from the first support plate 3, and transfer the PCB board 17 to the second support plate 12. At this time, the unprinted side of the PCB board 17 faces upward, and then print the other side of the PCB board 17.

[0029] When the operator places the PCB board 17 on the first support plate 3, in order to quickly position the PCB board 17, a first positioning plate 4 for positioning the PCB board 17 is fixed on the upper surface of the first support plate 3. The first positioning plate 4 is L-shaped, and one corner of the PCB board 17 is aligned with the corner of the first positioning plate 4, so that the two adjacent sides of the PCB board 17 can be positioned at the same time. In order to adapt to the size of different PCB boards 17, the other two sides of the PCB board 17 are limited by a first limiting assembly. The first limiting assembly is slidably connected to the upper surface of the first support plate 3. Specifically, the first limiting assembly includes a first mounting seat 5, a second mounting seat 8, a first adjustment rod 6, a second adjustment rod 9, and a first x-axis limiting plate 7 and a first y-axis limiting plate 10 respectively parallel to the two sides of the first positioning plate 4. The first mounting seat 5 and the second mounting seat 8 are both fixed on the upper surface of the first support plate 3. The first adjustment rod 6 is threadedly connected to the first mounting seat 5. The first adjustment rod 6 is close to the P One end of the CB plate 17 is rotatably connected to the first x-axis limit plate 7 through a bearing. Similarly, a second adjusting rod 9 is threadedly connected to the second mounting seat 8. The second adjusting rod 9 is rotatably connected to the first y-axis limit plate 10 through a bearing near one end of the PCB plate 17. Slide blocks are integrally formed on the lower sides of the first x-axis limit plate 7 and the first y-axis limit plate 10. Slide blocks are respectively provided on the upper surface of the first support plate 3 corresponding to the slide blocks on the lower sides of the first x-axis limit plate 7 and the first y-axis limit plate 10. The slide blocks are slidably connected in the slide blocks. The first x-axis limit plate 7 and the first y-axis limit plate 10 slide in the vertical direction of the corresponding edges respectively.

[0030] When using this solution, first threadably rotate the first adjusting rod 6 and the second adjusting rod 9, and the first adjusting rod 6 and the second adjusting rod 9 move forward or backward, thereby pushing the first x-axis limit plate 7 and the first y-axis limit plate 10 to move forward or backward along the slide groove to adjust the position of the first x-axis limit plate 7 and the first y-axis limit plate 10, so that the space formed between the first x-axis limit plate 7, the first y-axis limit plate 10 and the first positioning plate 4 just matches the size of the PCB board 17, and then place the PCB board 17 and align one of its corners at the corner of the first positioning plate 4.

[0031] When the PCB board 17 is transferred to the second supporting plate 12, in order to realize the positioning of the PCB board 17, a second positioning plate 13 is fixed on the upper surface of the second supporting plate 12 corresponding to the first positioning plate 4, and the structure of the second positioning plate 13 is the same as that of the first positioning plate 4. Similarly, in order to adapt to the size of different PCB boards 17, a second limiting component is installed on the upper surface of the second supporting plate 12 corresponding to the first limiting component. The structure and fixing method of the second limiting component are the same as those of the first limiting component, wherein the position adjusted by the second limiting component is the same as the position adjusted by the first limiting component, and the difference is that the second limiting component The cross-sections of the second x-axis limit plate 15 and the second y-axis limit plate 16 of the component are both L-shaped, and a plurality of support pins 14 are fixed on the horizontal plates of the second x-axis limit plate 15 and the second y-axis limit plate 16. Since the side of the PCB board 17 printed with ink faces downward, in order to prevent the side of the PCB board 17 printed with ink from contacting with the upper surface of the second support plate 12 and damaging the printed surface, the support pins 14 can support the edge of the PCB board 17. On the upper surface of the second support plate 12, located inside the two sides of the second positioning plate 13, a plurality of support pins 14 are also fixed along the length direction of the two sides. The plurality of support pins 14 are evenly distributed, see Figure 4 As shown, the edges of the four sides of the PCB board 17 are supported by the support needles 14, which can avoid damaging the PCB board 17 and the side printed with ink.

[0032] Specific implementation process:

[0033] When printing solder mask, first cooperate with the PCB board 17 to be printed, adjust the positions of the first x-axis limit plate 7, the first y-axis limit plate 10, the second x-axis limit plate 15 and the second y-axis limit plate 16, and then place the PCB board 17 to be printed between the first x-axis limit plate 7, the first y-axis limit plate 10 and the first positioning plate 4 on the first support plate, then one side of the PCB board 17 can be printed, after the printing is completed, start the negative pressure device, the PCB board 17 rotates 180° with the first support plate 3, at this time the first support plate 3 is just flipped to the top of the second support plate 12, the side of the PCB board 17 printed with ink faces down, the support needle 14 supports the edge of the PCB board 17, and then turn off the negative pressure device, the PCB board 17 is separated from the first support plate 3, the first support plate 3 rotates 180° in the opposite direction to return to the initial position, and then the other side of the PCB board 17 is printed, after both sides are printed, it can be dried once.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A PCB solder mask printing tool, comprising a frame, characterized in that: The frame is rotatably connected to a first support plate for placing a PCB board, the first support plate is hollow inside, and a plurality of adsorption holes are opened on the upper surface of the first support plate, the adsorption holes are used for negative pressure adsorption of the PCB board, and also includes a negative pressure device, the negative pressure device is used to provide a negative pressure environment for the adsorption holes; and also includes a second support plate, the first support plate rotates to drive the PCB board to turn over and transfer to the second support plate, and the second support plate is used to support the PCB board.

2. The PCB solder mask printing tool according to claim 1, characterized in that: The frame is rotatably connected with a rotating shaft, the first support plate and the second support plate are located on both sides of the rotating shaft, the first support plate is fixed to the rotating shaft on one side close to the rotating shaft, and the second support plate is parallel to and lower than the first support plate.

3. The PCB solder mask printing tool according to claim 2, characterized in that: A first positioning plate for positioning the PCB board is disposed on the upper surface of the first supporting plate. The first positioning plate is L-shaped, and one corner of the PCB board is aligned with the folded corner of the first positioning plate.

4. The PCB solder mask printing tool according to claim 3, characterized in that: The upper surface of the first support plate is also slidably connected with a first limiting assembly for limiting the movement of the PCB board. The first limiting assembly includes a first x-axis limiting plate and a first y-axis limiting plate which are respectively parallel to the two edges of the first positioning plate. The first x-axis limiting plate and the first y-axis limiting plate slide in the vertical direction of the corresponding edges respectively.

5. The PCB solder mask printing tool according to claim 4, characterized in that: Slide blocks are fixed to the lower sides of the first x-axis limit plate and the first y-axis limit plate, and the upper surface of the first support plate is provided with slide grooves corresponding to the slide blocks on the lower sides of the first x-axis limit plate and the first y-axis limit plate, and the slide blocks are slidably connected in the slide grooves.

6. The solder mask printing tool for PCB board according to claim 5, characterized in that: The limiting assembly also includes a first mounting seat and a second mounting seat, both of which are fixed to the upper surface of the first support plate, the first mounting seat is rotatably connected to a first adjusting rod, the first adjusting rod is rotatably connected to the first x-axis limiting plate, the second mounting seat is rotatably connected to a second adjusting rod, the second adjusting rod is rotatably connected to the first y-axis limiting plate.

7. The solder mask printing tool for PCB board according to claim 3, characterized in that: A second positioning plate is installed on the upper surface of the second supporting plate corresponding to the first positioning plate, and the structure of the second positioning plate is the same as that of the first positioning plate.

8. The solder mask printing tool for PCB board according to claim 7, characterized in that: A plurality of support pins are evenly arranged on the upper surface of the second support plate at the inner sides of the two edges of the second positioning plate along the length direction of the two edges, and the support pins are used to support the edge of the PCB board.

9. The solder mask printing tool for PCB board according to claim 4, characterized in that: A second limiting assembly is provided on the upper surface of the second support plate corresponding to the first limiting assembly, and the second limiting assembly includes a second x-axis limiting plate and a second y-axis limiting plate which are respectively parallel to the two sides of the second positioning plate, and the second x-axis limiting plate and the second y-axis limiting plate slide in the vertical direction of the corresponding side respectively.

10. The solder mask printing tool for PCB board according to claim 9, characterized in that: The cross sections of the second x-axis limiting plate and the second y-axis limiting plate are both L-shaped, and a plurality of supporting pins are disposed on the horizontal plates of the second x-axis limiting plate and the second y-axis limiting plate.

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