PCB board drilling method and PCB board

Abstract

This invention belongs to the field of PCB board processing technology, specifically a PCB board drilling method and PCB board, including the following steps: First, the PCB board is placed at the positioning component and positioned by the positioning component; according to the processing parameters, the PCB board is drilled; the cleaning component is driven to remove residual metal debris in the holes; by setting a suction nozzle, the blower is turned on simultaneously when the main body of the drilling equipment is working. Under the action of the blower, the blower generates negative pressure in the collection box through the connecting pipe. Under the action of negative pressure, the metal debris in the holes enters the suction pipe through the suction nozzle, and the metal debris in the suction pipe finally enters the collection box through the connecting air bag and the air guide pipe, thereby realizing the cleaning function of metal debris; and since the distance between the holes is different, in order to realize the simultaneous drilling of the next hole and cleaning of the previous hole, the distance between the suction nozzle and the main body of the drilling equipment should be adjusted according to the distance between the processed holes to achieve the precision of adjustment.

Description

Technical Field

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

[0002] In the PCB manufacturing process, it is usually necessary to set through holes of different diameters on the PCB to connect the circuits of each inner layer. After drilling, copper plating and other processes are required to form a conductive layer in the hole to provide connection between electrical components. At present, the PCB manufacturing size is getting smaller and thinner, and the chip arrangement is becoming more and more dense. Therefore, the processing requirements for drilling holes in PCBs are becoming more precise.

[0003] A Chinese patent with publication number CN109362182A discloses a PCB board drilling positioning device, including a base plate; two support plates, the bottoms of which are respectively fixed to the top sides of the base plate; and two movable plates, the opposite sides of which slide on the opposite sides of the support plates. By aligning four positioning holes on the circuit board to be processed with four pins on the worktable, the device utilizes the interference principle between positioning points to reduce the deviation between the two positioning zero points, achieving high positioning accuracy and effectively improving the drilling pass rate. Rotating the threaded rod with a handle causes the threaded rod to move the fixing block downwards, bringing it into contact with the PCB board. The fixing block then secures the PCB board, preventing it from moving up and down during processing and affecting its processing quality.

[0004] In the aforementioned technology, when the PCB board is drilled, a large amount of debris and impurities will be generated at the drilling location. If they are not effectively cleaned, they will not only affect the cleanliness of the PCB board, but also easily scratch the surface of the PCB board, leading to quality problems. Moreover, the debris and impurities will affect the environment and harm the health of workers.

[0005] Therefore, the present invention provides a PCB board drilling method and a 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 drilling method according to this invention, comprising the following steps:

[0008] S1: First, place the PCB board at the positioning component and position the PCB board using the positioning component;

[0009] S2: Drill holes in the PCB board according to the processing parameters;

[0010] S3: Drive the cleaning component to remove residual metal debris from the hole;

[0011] S4: A metal layer of a set thickness is formed on the inner wall of the through hole, and resin is filled into the hole into which the metal layer has been formed;

[0012] S5: The holes that have been filled with resin are treated with processes such as copper plating and electroplating to form a PCB board;

[0013] The PCB board has a workbench below it and a drilling equipment body above it for drilling holes in the PCB board. A cleaning component, including a suction nozzle, is located above the workbench for cleaning residual metal debris from the holes. A positioning component, including a pressure plate, is located above the workbench for positioning and fixing the PCB board.

[0014] Preferably, the top two ends of the workbench are symmetrically fixed with first guide rails; the tops of the two first guide rails are movably connected with second guide rails; the second guide rails are vertically arranged on the tops of the first guide rails; the tops of the second guide rails are movably connected with mounting plates; the first guide rails are used for vertical movement of the mounting plates; the second guide rails are used for horizontal movement of the mounting plates; two L-shaped plates are fixedly attached to the mounting plates; electric push rods are fixedly attached to the tops of the L-shaped plates; the main body of the drilling equipment is fixedly attached to the output end of the electric push rods; the main body of the drilling equipment is slidably connected to the side wall of the mounting plate by sliders.

[0015] Preferably, the mounting plate has two rectangular openings at its bottom end, both of which are located on the same side of the drilling equipment body; each rectangular opening has a sliding block connected to it; each sliding block has a suction pipe connected and fixedly connected to it; one end of each suction pipe has a telescopic pipe connected and fixedly connected to it, and each suction nozzle is installed at one end of the suction pipe through the telescopic pipe; the other ends of the two suction pipes have a connecting airbag connected and fixedly connected to it, and the middle of the connecting airbag has a connecting air guide pipe connected and fixedly connected to one end of it; the other end of the air guide pipe has a connecting collection box connected and fixedly connected to it; a fan is installed on one side of the collection box through a connecting pipe; the collection box and the fan are both fixedly connected to the bottom of the workbench; two connecting plates are fixedly connected to the rear side wall of the mounting plate, and the suction pipes are both connected and fixedly connected to the connecting plates.

[0016] Preferably, the two movable blocks are threaded with lead screws; the lead screws are rotatably connected to the mounting plate via bearings; a fixing plate is fixedly connected to one side wall of the mounting plate; a motor is fixedly connected to the fixing plate; the output shaft of the motor is rotatably connected to the mounting plate via bearings; and the output shaft of the motor is fixedly connected to one end of the lead screw.

[0017] Preferably, the bottom of the collection box is slidably connected to a drawer; rotating blocks are symmetrically arranged on both sides of the drawer; the rotating blocks are rotatably connected to the collection box via a rotating shaft; L-shaped buckles are fixed to both ends of the drawer; and the rotating blocks cooperate with the L-shaped buckles.

[0018] Preferably, four support pillars are fixedly connected to the workbench, and the support pillars are flush with the first guide rail; the four corners of the pressure plate are slidably connected to the four support pillars; two through holes are opened on the pressure plate, an aluminum plate is placed at the bottom of the pressure plate, the aluminum plate is placed on top of the PCB board, and the size of the through holes is smaller than the size of the aluminum plate; the size of the aluminum plate is the same as the size of the PCB board; the main body of the drilling equipment is matched with the corresponding PCB board.

[0019] Preferably, the top of the workbench has a groove; two threaded rods are rotatably connected to the inner wall of the groove via bearings; a rotating wheel is fixedly connected to the bottom end of each threaded rod; a belt is sleeved between the two rotating wheels; the belt connects the two rotating wheels; each threaded rod is threadedly connected to a pressure plate, wherein a rotating block is fixedly connected to the top of the threaded rod near the outer side of the workbench; a baffle is fixedly connected to the bottom of the pressure plate; the baffle is located at the edge of the opening; a sliding groove is formed on the top of the workbench; the baffle is inserted into the sliding groove; the baffle is used for positioning the PCB board and the aluminum plate.

[0020] A preferred embodiment of the PCB board includes a top layer and a bottom layer; a plurality of core boards are disposed between the top layer and the bottom layer; the plurality of core boards are laminated together; the top layer is connected to the top of the uppermost core board; the bottom layer is connected to the bottom of the lowermost core board; and the PCB board is provided with one or more of through holes, buried holes, and blind holes.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The PCB board drilling method and PCB board of the present invention, by setting a suction nozzle, the main body of the drilling equipment is operated simultaneously with the fan. Under the action of the fan, the fan generates negative pressure in the collection box through the connecting pipe. Under the action of negative pressure, the metal debris in the hole enters the suction pipe through the suction nozzle. The metal debris in the suction pipe finally enters the collection box through the connecting air bag and the air guide pipe, thereby realizing the cleaning function of metal debris; and during the drilling process, since the distance between the holes is different, in order to achieve the effect of cleaning the previous hole while drilling the next hole, the distance between the suction nozzle and the main body of the drilling equipment should be adjusted according to the distance between the holes being processed, so as to achieve the effect of cleaning the previous hole while drilling the next hole, thus achieving the adjustment precision.

[0023] 2. The PCB board drilling method and PCB board of the present invention, by setting up a pressure plate and a pressure plate, the PCB board is placed between the worktable and the baffle, and then an aluminum plate is placed on the PCB board. The aluminum plate can not only prevent the surface of the PCB board from being scratched, but also facilitate heat dissipation at the drill bit of the main body of the drilling equipment, preventing the PCB board from being burned. When fixing, the rotating block is rotated, the rotating block drives the threaded rod to rotate, the threaded rod drives the connected rotating wheel to rotate, the rotating wheel drives the belt to rotate, the belt drives another rotating wheel to rotate, and the other rotating wheel drives the connected threaded rod to rotate. Thus, the two threaded rods drive the pressure plate to move synchronously. During the movement, the pressure plate slides on the support column, and the support column limits the pressure plate to the vertical direction. During the movement of the pressure plate, the aluminum plate and the PCB board are fixed in sequence. The rotation stops when the pressure plate is in complete contact with and fixed to the aluminum plate. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is a schematic diagram of the mounting plate and the second guide rail in this invention;

[0027] Figure 3 This is a schematic diagram of the structure of the material collection box and the air guide pipe in this invention;

[0028] Figure 4 This is a schematic diagram of the lead screw structure in this invention;

[0029] Figure 5 This is a schematic diagram of the pressure plate in this invention;

[0030] Figure 6 This is a schematic diagram of the rotating wheel and belt in this invention;

[0031] Figure 7 This is an enlarged view of the PCB board structure in this invention;

[0032] Figure 8 This is a flowchart of a method according to an embodiment of the present invention;

[0033] In the diagram: 1. Workbench; 2. First guide rail; 3. Second guide rail; 4. Mounting plate; 5. L-shaped plate; 6. Electric push rod; 7. Drilling equipment body; 8. Dust suction pipe; 9. Collection box; 10. Fan; 11. Drawer; 12. Air duct; 13. Suction nozzle; 14. Motor; 15. Fixed plate; 16. Moving block; 17. Lead screw; 18. Rectangular opening; 19. Connecting airbag; 20. Connecting plate; 21. Rotating block; 22. L-shaped buckle; 23. Pressure plate; 24. Support column; 25. Threaded rod; 26. Rotating block; 27. Groove; 28. Belt; 29. ​​Rotating wheel; 30. Aluminum plate; 31. Baffle; a1. Top plate layer; a2. Core plate; a3. Bottom plate layer; b1. Through hole; b2. Buried hole; b3. Blind hole. Detailed Implementation

[0034] 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.

[0035] like Figures 1 to 8 As shown in the figure, a PCB board drilling method according to an embodiment of the present invention includes the following steps:

[0036] S1: First, place the PCB board at the positioning component and position the PCB board using the positioning component;

[0037] S2: Drill holes in the PCB board according to the processing parameters;

[0038] S3: Drive the cleaning component to remove residual metal debris from the hole;

[0039] S4: A metal layer of a set thickness is formed on the inner wall of the through hole, and resin is filled into the hole into which the metal layer has been formed;

[0040] S5: The holes that have been filled with resin are treated with processes such as copper plating and electroplating to form a PCB board;

[0041] The PCB board is provided with a workbench 1 below it and a drilling equipment body 7 above it. The drilling equipment body 7 is used to drill holes in the PCB board. A cleaning component is provided above the workbench 1. The cleaning component includes a suction nozzle 13, which is used to clean metal debris remaining in the holes. A positioning component is provided above the workbench 1. The positioning component includes a pressure plate 23, which is used to position and fix the PCB board.

[0042] During operation, the PCB board is first placed between the worktable 1 and the pressure plate 23. Then, the pressure plate 23 is driven to move downwards until it fixes the PCB board on the worktable 1. The movement stops, thus positioning and fixing the PCB board to prevent it from shifting during operation and causing damage. Then, the drilling equipment body 7 is driven to drill holes in the PCB board according to the processing parameters. The drilling equipment body 7 can drill one or more of through holes b1, buried holes b2, and blind holes b3 on the PCB board. During the drilling process, metal debris remains in the holes. To prevent the metal debris from affecting the quality of the PCB board, the cleaning component is driven. The cleaning component generates airflow through the suction nozzle 13 to absorb the metal debris in the holes, thus achieving the function of cleaning the metal debris.

[0043] like Figure 1 As shown, the top two ends of the workbench 1 are symmetrically fixed with first guide rails 2; the tops of the two first guide rails 2 are movably connected with second guide rails 3; the second guide rails 3 are vertically arranged on the tops of the first guide rails 2; the tops of the second guide rails 3 are movably connected with mounting plates 4; the first guide rails 2 are used for vertical movement of mounting plates 4; the second guide rails 3 are used for horizontal movement of mounting plates 4; two L-shaped plates 5 are fixedly connected to the mounting plates 4; electric push rods 6 are fixedly connected to the tops of the L-shaped plates 5; the main body 7 of the drilling equipment is fixedly connected to the output end of the electric push rods 6; the main body 7 of the drilling equipment is slidably connected to the side wall of the mounting plate 4 by sliders.

[0044] During operation, the first guide rail 2 and the second guide rail 3 are controlled by a computer program. By inputting processing parameters into the computer program, the computer program controls the first guide rail 2 and the second guide rail 3 to slide vertically on the first guide rail 2, thus determining the longitudinal position of the processing. The computer program also controls the second guide rail 3 to slide horizontally on the second guide rail 3, thus determining the lateral position of the processing. The computer program controls the electric push rod 6, which drives the drilling equipment body 7 to move up and down through its output end, thus determining the processing depth. Two or more drilling equipment bodies 7 are set up, and the two or more drilling equipment bodies 7 simultaneously perform drilling processing on the PCB board, improving processing efficiency.

[0045] like Figures 2 to 4As shown, the bottom end of the mounting plate 4 has two rectangular openings 18, both of which are located on the same side of the main body 7 of the drilling equipment. A movable block 16 is slidably connected inside each rectangular opening 18. A suction pipe 8 is fixedly connected to each movable block 16. One end of each suction pipe 8 is fixedly connected to a telescopic pipe, and each suction nozzle 13 is installed at one end of the suction pipe 8 via the telescopic pipe. The other ends of the two suction pipes 8 are fixedly connected to a connecting airbag 19, and the middle of the connecting airbag 19 is fixedly connected to one end of an air guide pipe 12. The other end of the air guide pipe 12 is fixedly connected to a material collection box 9. A fan 10 is installed on one side of the material collection box 9 via a connecting pipe. The material collection box 9 and the fan 10 are both fixedly connected to the bottom of the workbench 1. Two connecting plates 20 are fixedly connected to the rear side wall of the mounting plate 4, and the suction pipes 8 are both fixedly connected to the connecting plates 20.

[0046] During operation, when there are metal shavings in the hole that are inconvenient to clean, the blower 10 needs to be turned on. Under the action of the blower 10, the blower 10 generates negative pressure in the collection box 9 through the connecting pipe. Under the action of negative pressure, the metal shavings in the hole enter the suction pipe 8 through the suction nozzle 13. The metal shavings in the suction pipe 8 finally enter the collection box 9 through the connecting air bag 19 and the air guide pipe 12, thereby realizing the cleaning function of metal shavings.

[0047] like Figure 4 As shown, two movable blocks 16 are threadedly connected to lead screws 17; the lead screws 17 are rotatably connected to the mounting plate 4 via bearings; a fixing plate 15 is fixedly connected to one side wall of the mounting plate 4; a motor 14 is fixedly connected to the fixing plate 15; the output shaft of the motor 14 is rotatably connected to the mounting plate 4 via bearings; the output shaft of the motor 14 is fixedly connected to one end of the lead screw 17.

[0048] During operation, the drilling equipment body 7 operates at varying distances between holes. To ensure that the previous hole can be cleaned while drilling the next one, the distance between the suction nozzle 13 and the drilling equipment body 7 should be adjusted accordingly to achieve precise adjustment. The motor 14 is activated, driving the lead screw 17 to rotate. The lead screw 17 then moves the moving block 16. A ball bearing nut seat is provided at the connection between the lead screw 17 and the moving block 16, ensuring radial movement of the moving block 16. The moving block 16 slides within a rectangular opening 18, which limits its position to a horizontal level. The moving block 16 drives the suction pipe 8 and the suction nozzle 13 to move synchronously. Movement stops when the distance between the suction nozzle 13 and the drilling equipment body 7 is equal to the distance between the holes.

[0049] like Figure 4As shown, a drawer 11 is slidably connected to the bottom of the collection box 9; rotating blocks 21 are symmetrically provided on both sides of the drawer 11; the rotating blocks 21 are rotatably connected to the collection box 9 through a rotating shaft; L-shaped buckles 22 are fixedly connected to both ends of the drawer 11; the rotating blocks 21 cooperate with the L-shaped buckles 22.

[0050] During operation, a large amount of debris will accumulate in the collection bin 9 after a period of time. When it is necessary to clean the debris in the collection bin 9, rotate the rotating block 21 upwards. The rotating block 21 rotates away from the L-shaped buckle 22, and the L-shaped buckle 22 releases its fixation on the rotating block 21. Pull the drawer 11 outwards to pour out the debris. When it is necessary to fix it, push the drawer 11 into the collection bin 9, and then rotate the rotating block 21 into the L-shaped buckle 22. The rotating block 21 and the L-shaped buckle 22 cooperate together to fix the drawer 11.

[0051] like Figure 5 As shown, four support columns 24 are fixedly connected to the workbench 1, and the support columns 24 are flush with the first guide rail 2; the four corners of the pressure plate 23 are slidably connected to the four support columns 24; the pressure plate 23 has two openings, and an aluminum plate 30 is placed at the bottom of the pressure plate 23. The aluminum plate 30 is placed on top of the PCB board, and the size of the opening is smaller than the size of the aluminum plate 30; the size of the aluminum plate 30 is the same as the size of the PCB board; the main body 7 of the drilling equipment is matched with the corresponding PCB board.

[0052] During operation, when placing the PCB, the PCB is placed between the workbench 1 and the pressure plate 23, and then an aluminum plate 30 is placed on the PCB. The size of the aluminum plate 30 is the same as that of the PCB. The aluminum plate 30 can not only prevent the surface of the PCB from being scratched, but also facilitate heat dissipation at the drill bit of the main body 7 of the drilling equipment, preventing the PCB from being burned. The size of the opening is smaller than that of the aluminum plate 30, which can not only complete the drilling, but also prevent the aluminum plate 30 from falling off, achieving a fixing effect.

[0053] like Figure 6 As shown, the top of the workbench 1 has a groove 27; two threaded rods 25 are rotatably connected to the inner wall of the groove 27 via bearings; the bottom end of each threaded rod 25 is fixedly connected to a rotating wheel 29; a belt 28 is sleeved between the two rotating wheels 29; the belt 28 connects the two rotating wheels 29; each threaded rod 25 is threadedly connected to a pressure plate 23, wherein the top of the threaded rod 25 near the outer side of the workbench 1 is fixedly connected to a rotating block 26; a baffle 31 is fixedly connected to the bottom of the pressure plate 23; the baffle 31 is located at the edge of the opening; a sliding groove is formed on the top of the workbench 1; the baffle 31 is inserted into the sliding groove; the baffle 31 is used for positioning the PCB board and the aluminum plate 30.

[0054] During operation, when fixing is required, the rotating block 26 is rotated, which drives the threaded rod 25 to rotate. The threaded rod 25 drives the connected rotating wheel 29 to rotate, which drives the belt 28 to rotate. The belt 28 drives another rotating wheel 29 to rotate, which in turn drives the connected threaded rod 25 to rotate. Thus, the two threaded rods 25 synchronously drive the pressure plate 23 to move. During the movement, the pressure plate 23 slides on the support column 24, which limits the pressure plate 23 to the vertical direction. During the movement, the pressure plate 23 fixes the aluminum plate 30 and the PCB board in sequence. The rotation stops when the pressure plate 23 is in complete contact with and fixed to the aluminum plate 30. It is worth noting that excessive pressure should not be applied to prevent damage to the PCB board components. The bottom of the pressure plate 23 is provided with a baffle 31. When placing the PCB board and the aluminum plate 30, the PCB board and the aluminum plate 30 need to be positioned between the baffle 31 to facilitate the positioning of the PCB board and the aluminum plate 30 and prevent them from being directly placed on the worktable 1, which could cause positional deviation and affect the processing parameters of the PCB board.

[0055] A type of PCB board, such as Figure 6 As shown, the PCB board includes a top layer a1 and a bottom layer a3; multiple core boards a2 are provided between the top layer a1 and the bottom layer a3; the multiple core boards a2 are formed by pressing together; the top layer a1 is connected to the top of the uppermost core board a2; the bottom layer a3 is connected to the bottom of the lowermost core board a2; the PCB board has one or more of through holes b1, buried holes b2 and blind holes b3.

[0056] Working principle: The first guide rail 2 and the second guide rail 3 are controlled by a computer program. By inputting processing parameters into the computer program, the first guide rail 2 and the second guide rail 3 slide vertically on the first guide rail 2 to determine the longitudinal position of the processing. The mounting plate 4 slides horizontally on the second guide rail 3 to determine the lateral position of the processing. The electric push rod 6 is controlled by the computer program, and its output end drives the drilling equipment body 7 to move up and down, determining the processing depth. When placing the PCB, the PCB is placed between the worktable 1 and the baffle 31, and then an aluminum plate 30 is placed on the PCB. The size of the aluminum plate 30 is the same as that of the PCB. The aluminum plate 30 not only provides protection... To prevent scratches on the PCB surface and facilitate heat dissipation at the drill bit of the drilling equipment body 7, preventing the PCB from burning out; the size of the opening is smaller than that of the aluminum plate 30, which not only allows drilling but also prevents the aluminum plate 30 from falling off; during fixing, rotating the rotating block 26 drives the threaded rod 25 to rotate, which in turn drives the connected rotating wheel 29 to rotate, which in turn drives the belt 28 to rotate, which in turn drives another rotating wheel 29 to rotate, which in turn drives the connected threaded rod 25 to rotate, thus the two threaded rods 25 synchronously drive the pressure plate 23 to move. During the movement, the pressure plate 23 slides on the support column 24, which limits the pressure plate 23 to a vertical position. In the direction of movement, the pressure plate 23 sequentially fixes the aluminum plate 30 and the PCB board. Rotation stops once the pressure plate 23 is fully in contact with and fixed to the aluminum plate 30. It is important to note that excessive pressure should be avoided to prevent damage to the PCB board components. During drilling, due to the varying distances between holes, the distance between the suction nozzle 13 and the drilling equipment body 7 should be adjusted to ensure precise drilling while simultaneously cleaning the previous hole. The motor 14 is activated, driving the lead screw 17 to rotate. The lead screw 17 then moves the moving block 16. A ball bearing nut seat is provided at the connection between the lead screw 17 and the moving block 16. The ball bearing nut seat ensures the radial movement of the moving block 16, and the moving block 16 slides within the rectangular opening 18. The rectangular opening 18 limits the moving block 16 to a horizontal position. The moving block 16 drives the dust suction pipe 8 and the suction nozzle 13 to move synchronously. When the distance between the suction nozzle 13 and the main body 7 of the drilling equipment is equal to the distance between the processed holes, the movement stops. When the main body 7 of the drilling equipment is working, the blower 10 is turned on at the same time. Under the action of the blower 10, the blower 10 generates negative pressure in the collection box 9 through the connecting pipe. Under the action of negative pressure, the metal debris in the hole enters the dust suction pipe 8 through the suction nozzle 13. The metal debris in the dust suction pipe 8 finally enters the collection box 9 through the connecting air bag 19 and the air guide pipe 12, thereby realizing the cleaning function of metal debris.

[0057] 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 drilling holes in a PCB board, characterized in that: Includes the following steps: S1: First, place the PCB board at the positioning component and position the PCB board using the positioning component; S2: Drill holes in the PCB board according to the processing parameters; S3: Drive the cleaning component to remove residual metal debris from the hole; S4: A metal layer of a set thickness is formed on the inner wall of the through hole, and resin is filled into the hole into which the metal layer has been formed; S5: Apply copper plating and electroplating to the resin-filled holes to form a PCB board; The PCB board has a workbench (1) below it and a drilling equipment body (7) above it. The drilling equipment body (7) is used to drill holes in the PCB board. A cleaning component is provided above the workbench (1). The cleaning component includes a suction nozzle (13) and is used to clean metal debris remaining in the holes. A positioning component is provided above the workbench (1). The positioning component includes a pressure plate (23) and is used to position and fix the PCB board. The top of the workbench (1) is symmetrically fixed with first guide rails (2) at both ends; the top of the two first guide rails (2) is movably connected with second guide rails (3); the second guide rails (3) are vertically set on the top of the first guide rails (2); the top of the second guide rails (3) is movably connected with mounting plates (4); the first guide rails (2) are used for vertical movement of mounting plates (4); the second guide rails (3) are used for horizontal movement of mounting plates (4); two L-shaped plates (5) are fixed on the mounting plates (4); electric push rods (6) are fixed on the top of the L-shaped plates (5); the main body of the drilling equipment (7) is fixed on the output end of the electric push rods (6); the main body of the drilling equipment (7) is slidably connected to the side wall of the mounting plate (4) by a slider; The mounting plate (4) has two rectangular openings (18) at its bottom end, both of which are located on the same side of the drilling equipment body (7). Each rectangular opening (18) has a sliding block (16) connected to it. Each sliding block (16) is connected to a suction pipe (8). One end of each suction pipe (8) is connected to a telescopic tube, and each suction nozzle (13) is installed at one end of the suction pipe (8) via the telescopic tube. The other ends of both suction pipes (8) are connected to... A connecting airbag (19) is connected to one end of an air guide pipe (12) in the middle; the other end of the air guide pipe (12) is connected to a material collection box (9); a fan (10) is installed on one side of the material collection box (9) through a connecting pipe; the material collection box (9) and the fan (10) are both fixed to the bottom of the workbench (1); two connecting plates (20) are fixed to the rear side wall of the mounting plate (4), and the dust suction pipes (8) are both connected to the connecting plates (20).

2. The PCB board drilling method according to claim 1, characterized in that: Two movable blocks (16) are threaded with lead screws (17); the lead screws (17) are rotatably connected to the mounting plate (4) via bearings; a fixing plate (15) is fixedly connected to one side wall of the mounting plate (4); a motor (14) is fixedly connected to the fixing plate (15); the output shaft of the motor (14) is rotatably connected to the mounting plate (4) via bearings; the output shaft of the motor (14) is fixedly connected to one end of the lead screws (17).

3. The PCB board drilling method according to claim 2, characterized in that: The bottom of the collection box (9) is slidably connected to a drawer (11); both sides of the drawer (11) are symmetrically provided with rotating blocks (21); the rotating blocks (21) are rotatably connected to the collection box (9) through a rotating shaft; both ends of the drawer (11) are fixedly connected with L-shaped buckles (22); the rotating blocks (21) cooperate with the L-shaped buckles (22).

4. A PCB board drilling method according to claim 3, characterized in that: Four support pillars (24) are fixedly connected to the workbench (1), and the support pillars (24) are flush with the first guide rail (2); the four corners of the pressure plate (23) are slidably connected to the four support pillars (24); two through holes are opened on the pressure plate (23), an aluminum plate (30) is placed at the bottom of the pressure plate (23), the aluminum plate (30) is placed on the top of the PCB board, and the size of the through hole is smaller than the size of the aluminum plate (30); the size of the aluminum plate (30) is the same as the size of the PCB board; the main body (7) of the drilling equipment is matched with the corresponding PCB board.

5. A PCB board drilling method according to claim 4, characterized in that: The top of the workbench (1) is provided with a groove (27); two threaded rods (25) are rotatably connected to the inner wall of the groove (27) by bearings; the bottom end of each threaded rod (25) is fixed with a rotating wheel (29); a belt (28) is sleeved between the two rotating wheels (29); the belt (28) connects the two rotating wheels (29); each threaded rod (25) is threadedly connected to a pressure plate (23), and the top of the threaded rod (25) near the outside of the workbench (1) is fixed with a rotating block (26); a baffle (31) is fixed to the bottom of the pressure plate (23); the baffle (31) is set at the edge of the opening; a sliding groove is provided on the top of the workbench (1); the baffle (31) is inserted into the sliding groove; the baffle (31) is used for positioning the PCB board and the aluminum plate (30).

6. A PCB board, which is prepared by drilling using the PCB board drilling method according to any one of claims 1-5, characterized in that: The PCB board includes a top layer (a1) and a bottom layer (a3); multiple core boards (a2) are provided between the top layer (a1) and the bottom layer (a3); the multiple core boards (a2) are laminated together; the top layer (a1) is connected to the top of the uppermost core board (a2); the bottom layer (a3) ​​is connected to the bottom of the lowermost core board (a2); the PCB board has one or more of through holes (b1), buried holes (b2) and blind holes (b3).

Images