A PCB board and a method for preparing the PCB board.

Abstract

This invention belongs to the field of PCB board technology, specifically a PCB board and its preparation method, including the following steps: preparing a substrate and cutting it according to the required size using a cutting assembly; placing the cut substrate into a copper cladding bath to coat it with copper film to form a copper-clad board; coating the copper-clad board with an anti-corrosion dry film and drilling holes using a drilling device; after drilling, using a plasma process, a rotating disk can be set to drive the placement board to rotate, so that when the cutting surface of the insulating substrate needs to be adjusted after cutting, only the disk needs to be rotated, while the insulating substrate does not need to move, reducing displacement and eliminating the need to repeatedly adjust the position of the insulating substrate or the position of the cutting machine, thus reducing the difficulty of operation. At the same time, when the lifting platform moves down for cutting, it can drive the spring telescopic rod to cooperate with the limiting block to limit the insulating substrate, preventing displacement during cutting and improving cutting efficiency.

Description

Technical Field

[0001] This invention belongs to the field of PCB board technology, specifically a PCB board and a method for preparing the PCB board. Background Technology

[0002] A PCB (Printed Circuit Board) is a substrate used to support and connect electronic components. It is made by printing and etching conductive copper foil patterns onto an insulating substrate. PCBs play a role in connecting, supporting, and electrically isolating electronic devices, and are an indispensable component of modern electronic devices.

[0003] Currently, when preparing a PCB board, it is necessary to first prepare an insulating substrate. When preparing the insulating substrate, the corresponding size needs to be designed first. Then, the insulating substrate is placed on the cutting table, and the lines to be cut are marked on the insulating substrate. Finally, the cutting machine is used to cut according to the marked lines to ensure that the edges of the PCB board are flat, burr-free, and meet the design specifications. Finally, the coating and conductive traces are engraved.

[0004] In current technology, when cutting insulating substrates, a cutting machine is used to cut along the cutting trajectory. However, it is generally impossible to complete the cutting in one go. Therefore, after cutting one side, the insulating substrate needs to be readjusted to continue cutting. In order to ensure the optimal cutting position, either the position of the cutting machine needs to be readjusted or the position of the insulating substrate needs to be repeatedly adjusted. The overall operation is cumbersome, and the cutting efficiency needs to be improved.

[0005] Therefore, the present invention provides a PCB board and a method for preparing the PCB board. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is: a PCB board and a method for preparing the PCB board according to this invention, comprising the following steps:

[0008] S1: Prepare the substrate and cut it to the required size using the cutting assembly;

[0009] S2: Place the cut substrate into a copper cladding bath and press it with copper film to form a copper clad board;

[0010] S3: Apply an anti-corrosion dry film to the copper-clad laminate and drill holes using a drilling device;

[0011] S4: After drilling is completed, plasma technology is used to engrave the copper film on the surface of the copper-clad laminate using an anti-corrosion dry film as a shield.

[0012] S5: Finally, remove the anti-corrosion dry film to expose the circuit pattern for wiring, thus completing the PCB board preparation.

[0013] Preferably, the cutting assembly includes a worktable; a rotating disk is rotatably connected to one side of the top of the worktable; a placement plate is fixedly connected to the top of the rotating disk; an electric telescopic rod is fixedly connected to the top of the worktable; a lifting platform is fixedly connected to the top of the electric telescopic rod; a limit clamping platform is fixedly connected to the bottom of the lifting platform; support platforms are fixedly connected to both sides of the limit clamping platform and located at the bottom of the lifting platform; a support shaft is rotatably connected inside the limit clamping platform; a cutting blade is fixedly connected to the surface of the support shaft; a spring telescopic rod is fixedly connected to the bottom of the limit clamping platform; and a limit clamping block is fixedly connected to the bottom end of the spring telescopic rod.

[0014] Preferably, the number of support platforms is set to two, one of which has a horizontal motor fixedly connected inside; the output shaft of the horizontal motor is fixedly connected to one end of the support shaft through a coupling; the number of cutting blades is set to two, and the two cutting blades are symmetrically arranged on both sides of the limiting plate; the end of the support shaft away from the horizontal motor is rotatably connected to the surface of the support platform.

[0015] Preferably, a support frame is fixedly connected to one side of the top of the workbench; an adjusting screw is threadedly connected to one side of the support frame; a rotating handle is fixedly connected to one end of the adjusting screw; one end of the adjusting screw passes through the support frame and extends to one side of the support frame; a discharge plate is rotatably connected to the end of the adjusting screw located on one side of the support frame; a limiting slide rod is fixedly connected to the surface of the discharge plate; and the surface of the limiting slide rod is slidably connected to the surface of the support frame.

[0016] Preferably, a limit rod is slidably connected to the surface of the lifting platform; the top and bottom ends of the limit rod are fixedly connected to the surface of the support frame and the top of the worktable, respectively; a drive shaft is fixedly connected to the bottom of the rotating disc; a motor cylinder is fixedly connected to the bottom of the worktable; one end of the drive shaft passes through the worktable and the motor cylinder and extends into the interior of the motor cylinder; a built-in motor is fixedly connected inside the motor cylinder; the output shaft of the built-in motor is fixedly connected to one end of the drive shaft via a coupling.

[0017] Preferably, an adjustment frame is fixedly connected to the side of the top of the workbench away from the support frame; a card holder is fixedly connected to one side of the top of the workbench; the top of the workbench is fixedly connected to the bottom of the copper plating pool; the copper plating pool is disposed between one side of the placement plate and one side of the card holder; a limiting sleeve is fixedly connected to the surface of the card holder; a telescopic slide rod is slidably connected to the inner wall of the limiting sleeve; a limiting spring is fixedly connected to one end of the telescopic slide rod; the end of the limiting spring away from the telescopic slide rod is fixedly connected to one side of the inner wall of the limiting sleeve; a limiting plate is fixedly connected to one end of the telescopic slide rod; the number of the limiting sleeve, telescopic slide rod, limiting spring, and limiting plate is set to four, and the four limiting sleeves, telescopic slide rods, limiting springs, and limiting plates are symmetrically arranged in pairs on the surface of the card holder.

[0018] Preferably, a crossbar is fixedly connected to the surface of the adjusting frame; an engraving seat is slidably connected to the surface of the crossbar; a threaded screw is threadedly connected to the surface of the adjusting frame; one end of the threaded screw passes through the adjusting frame and the engraving seat; the surface of the threaded screw is threadedly connected to the surface of the engraving seat; the surface of the threaded screw is rotatably connected to the surface of the adjusting frame; a longitudinal motor is fixedly connected to one side of the engraving seat; the output shaft of the longitudinal motor is fixedly connected to a reciprocating screw via a coupling; a movable engraver is slidably connected to the surface of the reciprocating screw; and the surface of the movable engraver is slidably connected to the surface of the engraving seat.

[0019] Preferably, a PCB board is made of glass fiber reinforced epoxy resin and is configured as a double-layer structure. The internal electrical connections are used for communication to provide higher circuit density and better electromagnetic shielding. In addition, copper film is laminated through a copper pool (24) to engrave conductive traces as circuit paths connecting electronic components. Finally, a solder mask layer is set on the surface of the formed PCB board to protect the PCB board surface and prevent short circuits and corrosion.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The PCB board and its preparation method described in this invention, by setting a rotating disk, can drive the placement board to rotate. When the cutting surface needs to be adjusted after the insulating substrate is cut, only the disk needs to be rotated, while the insulating substrate does not need to move. This reduces displacement and eliminates the need to repeatedly adjust the position of the insulating substrate or the position of the cutting machine, thus reducing the difficulty of operation. At the same time, when the lifting platform moves down for cutting, it can drive the spring telescopic rod to cooperate with the limiting block to limit the insulating substrate, preventing displacement during cutting and improving cutting efficiency.

[0022] 2. The PCB board and its preparation method described in this invention, by setting a limiting sleeve, and cooperating with a limiting spring and a telescopic slide rod to drive the limiting plate to move, thereby clamping the cut insulating substrate, then the threaded screw drives the engraving seat to move longitudinally, and cooperates with the longitudinal motor to drive the reciprocating screw to rotate, thereby driving the moving engraver to move horizontally back and forth, to engrave the clamped insulating substrate in multiple directions, thus improving the adaptability of engraving. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a flowchart of the present invention;

[0025] Figure 2 This is a perspective view of the present invention;

[0026] Figure 3 This is a first cross-sectional view of the present invention;

[0027] Figure 4 This is a first perspective view of a portion of the structure in this invention;

[0028] Figure 5 This is a second cross-sectional view of the present invention;

[0029] Figure 6 This is a perspective view of the lifting platform structure in this invention;

[0030] Figure 7 This is a second perspective view of a portion of the structure in this invention;

[0031] In the diagram: 1. Workbench; 2. Rotating disc; 3. Placement plate; 4. Electric telescopic rod; 5. Lifting platform; 6. Limiting plate; 7. Support platform; 8. Support shaft; 9. Cutting blade; 10. Spring telescopic rod; 11. Limiting block; 12. Horizontal motor; 13. Support frame; 14. Adjusting screw; 15. Rotating handle; 16. Discharge plate; 17. Limiting slide rod; 18. Limiting clamp rod; 19. Drive shaft; 20. Motor cylinder; 21. Built-in motor; 22. Adjusting frame; 23. Placement cavity seat; 24. Copper plating pool; 25. Limiting sleeve; 26. Telescopic slide rod; 27. Limiting spring; 28. Limiting plate; 29. ​​Crossbar; 30. Engraving seat; 31. Threaded screw; 32. Longitudinal motor; 33. Reciprocating screw; 34. Moving engraver. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figure 1As shown in the embodiment of the present invention, a PCB board and a method for preparing the PCB board include the following steps:

[0034] S1: Prepare the substrate and cut it to the required size using the cutting assembly;

[0035] S2: Place the cut substrate into the copper cladding pool 24 and press copper film onto it to form a copper clad board;

[0036] S3: Apply an anti-corrosion dry film to the copper-clad laminate and drill holes using a drilling device;

[0037] S4: After drilling is completed, plasma technology is used to engrave the copper film on the surface of the copper-clad laminate using an anti-corrosion dry film as a shield.

[0038] S5: Finally, remove the anti-corrosion dry film to expose the circuit pattern for wiring, thus completing the PCB board preparation.

[0039] During the process, before preparing the PCB board, a substrate needs to be prepared. It is made of glass fiber reinforced epoxy resin, with a double-layer structure, and is pressed together. Then, it is cut according to the design size using a cutting component. After that, the cut substrate is placed in the copper cladding pool 24 to clad copper film, forming a copper clad board. Before drilling, an anti-corrosion dry film is clad on the copper clad board. Then, drilling is performed, followed by engraving to form conductive traces as circuit paths connecting electronic components. Finally, the anti-corrosion dry film is removed. If necessary, a solder mask layer is also set on the surface of the formed PCB board to protect the PCB board surface and prevent short circuits and corrosion.

[0040] like Figures 2 to 4As shown, the cutting assembly includes a workbench 1; a rotating disk 2 is rotatably connected to one side of the top of the workbench 1; a placement plate 3 is fixedly connected to the top of the rotating disk 2; an electric telescopic rod 4 is fixedly connected to the top of the workbench 1; a lifting platform 5 is fixedly connected to the top of the electric telescopic rod 4; a limiting clamping platform 6 is fixedly connected to the bottom of the lifting platform 5; support platforms 7 are fixedly connected to both sides of the limiting clamping platform 6 and located at the bottom of the lifting platform 5; a supporting rotating shaft 8 is rotatably connected inside the limiting clamping platform 6; and a surface of the supporting rotating shaft 8 is fixedly connected to... Cutting blade 9; a spring telescopic rod 10 is fixedly connected to the bottom of the limiting platen 6; a limiting block 11 is fixedly connected to the bottom end of the spring telescopic rod 10; two support platforms 7 are provided, one of which has a horizontal motor 12 fixedly connected inside; the output shaft of the horizontal motor 12 is fixedly connected to one end of the support shaft 8 via a coupling; two cutting blades 9 are provided, and the two cutting blades 9 are symmetrically arranged on both sides of the limiting platen 6; the end of the support shaft 8 away from the horizontal motor 12 is connected to the support platform. 7. A surface rotational connection is established; a support frame 13 is fixedly connected to one side of the top of the workbench 1; an adjusting screw 14 is threadedly connected to one side of the support frame 13; a rotating handle 15 is fixedly connected to one end of the adjusting screw 14; one end of the adjusting screw 14 passes through the support frame 13 and extends to one side of the support frame 13; a discharge plate 16 is rotatably connected to the end of the adjusting screw 14 located on one side of the support frame 13; a limiting slide rod 17 is fixedly connected to the surface of the discharge plate 16; the surface of the limiting slide rod 17 is slidably connected to the surface of the support frame 13; A limiting rod 18 is slidably connected to the surface of the lifting platform 5; the top and bottom ends of the limiting rod 18 are fixedly connected to the surface of the support frame 13 and the top of the worktable 1, respectively; a drive shaft 19 is fixedly connected to the bottom of the rotating disc 2; a motor cylinder 20 is fixedly connected to the bottom of the worktable 1; one end of the drive shaft 19 passes through the worktable 1 and the motor cylinder 20 and extends into the interior of the motor cylinder 20; a built-in motor 21 is fixedly connected inside the motor cylinder 20; the output shaft of the built-in motor 21 is fixedly connected to one end of the drive shaft 19 via a coupling.During operation, the substrate to be cut is placed on the placement plate 3. The electric telescopic rod 4 drives the lifting platform 5 to rise and fall. The lifting platform 5 drives the limit clamping plate 6 to rise and fall. When the limit clamping block 11 is raised and lowered to the substrate, the spring telescopic rod 10 provides a certain elastic force to the limit clamping block 11, thereby limiting the substrate. Then, the horizontal motor 12 drives the support shaft 8 to rotate, which in turn drives the cutting blade 9 to rotate and cut the substrate. When the cutting position needs to be adjusted after cutting, the built-in motor 21 drives the transmission shaft 19 to rotate through the output shaft, which in turn drives the rotating disk 2 to rotate, thereby driving the cutting disk 2 to rotate. The substrate on top of the movable placement plate 3 rotates to adjust the cutting position. After cutting, the adjusting screw 14 is rotated by rotating the handle 15. The rotating screw 14 moves the discharge plate 16 forward, pushing the cut substrate off the placement plate 3. This reduces displacement and eliminates the need for repeated adjustments to the position of the insulating substrate or the cutting machine, simplifying operation. Simultaneously, when the lifting platform 5 moves downwards for cutting, the spring telescopic rod 10, in conjunction with the limiting block 11, limits the insulating substrate, preventing displacement during cutting and improving efficiency.

[0041] like Figure 2 , Figure 5 and Figure 7As shown, an adjusting frame 22 is fixedly connected to the top of the workbench 1 on the side away from the support frame 13; a card holder 23 is fixedly connected to one side of the top of the workbench 1; the top of the workbench 1 is fixedly connected to the bottom of the copper plating pool 24; the copper plating pool 24 is disposed between one side of the placement plate 3 and one side of the card holder 23; a limiting sleeve 25 is fixedly connected to the surface of the card holder 23; a telescopic slide rod 26 is slidably connected to the inner wall of the limiting sleeve 25; a limiting spring 27 is fixedly connected to one end of the telescopic slide rod 26; the end of the limiting spring 27 away from the telescopic slide rod 26 is fixedly connected to one side of the inner wall of the limiting sleeve 25; the telescopic slide rod 26... One end is fixedly connected to a limiting plate 28; the number of limiting sleeves 25, telescopic slide rods 26, limiting springs 27, and limiting plates 28 are all set to four, and the four limiting sleeves 25, telescopic slide rods 26, limiting springs 27, and limiting plates 28 are symmetrically arranged in pairs on the surface of the placement cavity seat 23; a crossbar 29 is fixedly connected to the surface of the adjusting frame 22; an engraving seat 30 is slidably connected to the surface of the crossbar 29; a threaded screw 31 is threadedly connected to the surface of the adjusting frame 22; one end of the threaded screw 31 passes through the adjusting frame 22 and the engraving seat 30; the surface of the threaded screw 31 is threadedly connected to the surface of the engraving seat 30; the surface of the threaded screw 31... The surface of the adjustment frame 22 is rotatably connected; a longitudinal motor 32 is fixedly connected to one side of the engraving base 30; the output shaft of the longitudinal motor 32 is fixedly connected to a reciprocating lead screw 33 via a coupling; a movable engraving device 34 is slidably connected to the surface of the reciprocating lead screw 33; the surface of the movable engraving device 34 is slidably connected to the surface of the engraving base 30; the PCB board is made of glass fiber reinforced epoxy resin, and is configured as a double-layer structure. Internal electrical connections facilitate communication, providing higher circuit density and better electromagnetic shielding. Furthermore, copper film is deposited through a copper-clad pool 24 to engrave conductive traces, serving as circuit paths connecting electronic components. Finally, the formed... A solder mask layer is applied to the surface of the PCB board to protect it from short circuits and corrosion. During operation, after the substrate is pushed off the placement plate 3, it falls into the copper plating pool 24 for copper plating. Then, the copper-plated substrate is placed in the placement cavity 23. The limiting sleeve 25, together with the limiting spring 27 and the telescopic slide rod 26, moves the limiting plate 28 to hold the cut insulating substrate. Then, the threaded screw 31 is rotated to move the engraving seat 30 longitudinally. The longitudinal motor 32 drives the reciprocating screw 33 to rotate, which in turn drives the moving engraver 34 to move horizontally back and forth, performing multi-directional engraving on the held insulating substrate, thus improving the engraving adaptability.

[0042] Working Principle: Current technology for cutting insulating substrates involves using a cutting machine to cut along a designated path. However, this process is often inefficient, requiring readjustment of the insulating substrate after each cut. To ensure optimal cutting position, either the cutting machine or the insulating substrate needs repeated adjustments, resulting in a cumbersome operation and reduced efficiency. In this new approach, a substrate made of glass fiber reinforced epoxy resin with a double-layer structure is prepared before PCB fabrication and pressed together. The substrate is then cut to the designed dimensions using a cutting assembly. Finally, the cut substrate is placed in a copper plating bath 24 to deposit copper film. A copper-clad laminate is formed. Before drilling, an anti-corrosion dry film is applied to the copper-clad laminate. Drilling is then performed, followed by engraving to create conductive traces, which serve as circuit paths connecting electronic components. Finally, the anti-corrosion dry film is removed. If necessary, a solder mask layer is applied to the surface of the formed PCB to protect the PCB surface from short circuits and corrosion. The substrate to be cut is placed on the placement plate 3. The electric telescopic rod 4 drives the lifting platform 5 to rise and fall. The lifting platform 5 drives the limit clamping platform 6 to rise and fall. When the limit clamping block 11 presses against the substrate, the spring telescopic rod 10 provides a certain elasticity to the limit clamping block 11, thereby limiting the substrate. Then, the horizontal motor 12 drives the support shaft 8 to rotate, which in turn drives the cutting blade 9 to rotate. The substrate is cut. When the cutting position needs to be adjusted after cutting, the built-in motor 21 drives the transmission shaft 19 to rotate via the output shaft, which in turn drives the rotating disk 2 to rotate, thereby rotating the substrate on top of the placement plate 3 to adjust the cutting position. Finally, after cutting, the adjusting screw 14 is rotated by turning the handle 15. After the adjusting screw 14 rotates, it drives the discharge plate 16 to move forward, pushing the cut substrate out of the placement plate 3. This reduces the possibility of displacement and eliminates the need to repeatedly adjust the position of the insulating substrate or the cutting machine, reducing the difficulty of operation. At the same time, when the lifting platform 5 moves down for cutting, it can drive the spring telescopic rod 10 to work with the limit block 11 to limit the insulating substrate and prevent displacement during cutting. Furthermore, this design improves cutting efficiency. After the substrate is pushed off the placement plate 3, it falls into the copper plating pool 24 for copper film lamination. The copper-clad substrate is then placed in the placement cavity 23. The limiting sleeve 25, along with the limiting spring 27 and the telescopic slide rod 26, moves the limiting plate 28 to hold the cut insulating substrate. The threaded screw 31 is then rotated to move the engraving seat 30 longitudinally. The longitudinal motor 32 drives the reciprocating screw 33 to rotate, which in turn moves the moving engraving device 34 horizontally back and forth, performing multi-directional engraving on the held insulating substrate. This improves the adaptability of the engraving process. The entire system utilizes a rotating disk 2 to rotate the placement plate 3, allowing adjustment of the cut surface after substrate cutting to be achieved simply by rotating the disk 2.The insulating substrate does not need to be moved, reducing displacement and eliminating the need for repeated adjustments to its position or the cutting machine's position, thus simplifying operation. Simultaneously, when the lifting platform 5 moves downwards for cutting, it can drive the spring telescopic rod 10 in conjunction with the limiting plate 28 to limit the insulating substrate, preventing displacement during cutting and improving efficiency. Furthermore, by setting a limiting sleeve 25, in conjunction with the limiting spring 27 and the telescopic slide rod 26, the limiting plate 28 moves, thereby securing the cut insulating substrate. Then, the threaded screw 31 drives the engraving base 30 to move longitudinally, and the longitudinal motor 32 drives the reciprocating screw 33 to rotate, which in turn drives the moving engraving device 34 to move horizontally back and forth, performing multi-directional engraving on the secured insulating substrate, improving engraving adaptability.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a PCB board, characterized in that: Includes the following steps: S1: Prepare the substrate and cut it to the required size using the cutting assembly; S2: Place the cut substrate into the copper cladding pool (24) and press it with copper film to form a copper clad board; S3: Apply an anti-corrosion dry film to the copper-clad laminate and drill holes using a drilling device; S4: After drilling is completed, plasma technology is used to engrave the copper film on the surface of the copper-clad laminate using an anti-corrosion dry film as a shield. S5: Finally, remove the anti-corrosion dry film to expose the circuit pattern for wiring, thus completing the PCB board preparation; The cutting assembly includes a workbench (1); a rotating disk (2) is rotatably connected to one side of the top of the workbench (1); a placement plate (3) is fixedly connected to the top of the rotating disk (2); an electric telescopic rod (4) is fixedly connected to the top of the workbench (1); a lifting platform (5) is fixedly connected to the top of the electric telescopic rod (4); a limit clamping platform (6) is fixedly connected to the bottom of the lifting platform (5); support platforms (7) are fixedly connected to both sides of the limit clamping platform (6) and located at the bottom of the lifting platform (5); a support shaft (8) is rotatably connected inside the limit clamping platform (6); a cutting blade (9) is fixedly connected to the surface of the support shaft (8); a spring telescopic rod (10) is fixedly connected to the bottom of the limit clamping platform (6); and a limit clamping block (11) is fixedly connected to the bottom end of the spring telescopic rod (10).

2. The method for preparing a PCB board according to claim 1, characterized in that: The number of support platforms (7) is set to two, and a horizontal motor (12) is fixedly connected inside one of the support platforms (7); the output shaft of the horizontal motor (12) is fixedly connected to one end of the support shaft (8) through a coupling; the number of cutting blades (9) is set to two, and the two cutting blades (9) are symmetrically arranged on both sides of the limiting plate (6); the end of the support shaft (8) away from the horizontal motor (12) is rotatably connected to the surface of the support platform (7).

3. The method for preparing a PCB board according to claim 1, characterized in that: A support frame (13) is fixedly connected to one side of the top of the workbench (1); an adjusting screw (14) is threadedly connected to one side of the support frame (13); a rotating handle (15) is fixedly connected to one end of the adjusting screw (14); one end of the adjusting screw (14) passes through the support frame (13) and extends to one side of the support frame (13); a discharge plate (16) is rotatably connected to one end of the adjusting screw (14) located on one side of the support frame (13); a limiting slide rod (17) is fixedly connected to the surface of the discharge plate (16); the surface of the limiting slide rod (17) is slidably connected to the surface of the support frame (13).

4. The method for preparing a PCB board according to claim 1, characterized in that: The surface of the lifting platform (5) is slidably connected to a limiting rod (18); the top and bottom ends of the limiting rod (18) are fixedly connected to the surface of the support frame (13) and the top of the workbench (1), respectively; the bottom of the rotating disc (2) is fixedly connected to a drive shaft (19); the bottom of the workbench (1) is fixedly connected to a motor cylinder (20); one end of the drive shaft (19) passes through the workbench (1) and the motor cylinder (20) and extends into the interior of the motor cylinder (20); the interior of the motor cylinder (20) is fixedly connected to a built-in motor (21); the output shaft of the built-in motor (21) is fixedly connected to one end of the drive shaft (19) through a coupling.

5. The method for preparing a PCB board according to claim 1, characterized in that: An adjusting frame (22) is fixedly connected to the top of the workbench (1) on the side away from the support frame (13); a card holder (23) is fixedly connected to the top of the workbench (1); the top of the workbench (1) is fixedly connected to the bottom of the copper plating pool (24); the copper plating pool (24) is located between one side of the placement plate (3) and one side of the card holder (23); a limiting sleeve (25) is fixedly connected to the surface of the card holder (23); a telescopic slide rod (26) is slidably connected to the inner wall of the limiting sleeve (25); the telescopic slide rod (26) One end of the limiting spring (27) is fixedly connected to a limiting spring (27); the end of the limiting spring (27) away from the telescopic slide rod (26) is fixedly connected to one side of the inner wall of the limiting sleeve (25); one end of the telescopic slide rod (26) is fixedly connected to a limiting plate (28); the number of the limiting sleeve (25), telescopic slide rod (26), limiting spring (27) and limiting plate (28) is set to four, and the four limiting sleeves (25), telescopic slide rods (26), limiting springs (27) and limiting plates (28) are symmetrically arranged in pairs on the surface of the placement cavity seat (23).

6. The method for manufacturing a PCB board according to claim 5, characterized in that: A crossbar (29) is fixedly connected to the surface of the adjusting frame (22); a carving seat (30) is slidably connected to the surface of the crossbar (29); a threaded screw (31) is threadedly connected to the surface of the adjusting frame (22); one end of the threaded screw (31) passes through the adjusting frame (22) and the carving seat (30); the surface of the threaded screw (31) is threadedly connected to the surface of the carving seat (30); the surface of the threaded screw (31) is rotatably connected to the surface of the adjusting frame (22); a longitudinal motor (32) is fixedly connected to one side of the carving seat (30); a reciprocating screw (33) is fixedly connected to the output shaft of the longitudinal motor (32) through a coupling; a movable carving device (34) is slidably connected to the surface of the reciprocating screw (33); the surface of the movable carving device (34) is slidably connected to the surface of the carving seat (30).

7. A PCB board, wherein the PCB board is prepared by the method for preparing a PCB board according to any one of claims 1-6, characterized in that: The PCB board is made of glass fiber reinforced epoxy resin and is set as a double-layer structure. The internal electrical connection is used for communication to provide higher circuit density and better electromagnetic shielding effect. In addition, copper film is pressed through copper pool (24) to engrave conductive traces as circuit paths connecting electronic components. Finally, a solder mask layer is set on the surface of the formed PCB board to protect the PCB board surface and prevent short circuits and corrosion.

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