Thick-bottom copper PCB drilling machine

Abstract

The utility model relates to the technical field of PCB processing equipment, in particular to a thick-bottom copper PCB drilling machine which comprises a protective shell, a window, a first electric guide rail, a workbench, a first moving part, a fixed part, a drilling machine and the like. A window is mounted on the protective shell, a first electric guide rail and a workbench are mounted in the protective shell, a first moving part is mounted on the first electric guide rail, a fixing part is fixedly connected to the first moving part, a drilling machine is mounted on the fixing part, a drill bit is mounted on the drilling machine, and a variable pitch structure is arranged on a cutting section of the drill bit. The tooth pitch gradually changes from 0.8 mm at the front end to 1.2 mm at the rear end, a second electric guide rail is installed at the top end of the workbench, and a second moving piece is installed on the second electric guide rail. According to the utility model, chips are forcibly broken through a variable-pitch structure of the drill bit and are matched with pulse airflow impact of the air nozzle, so that friction and adhesion of the chips to a hole wall are reduced.

Description

Technical Field

[0001] This utility model relates to the field of PCB processing equipment technology, and in particular to a thick-bottom copper PCB drilling machine. Background Technology

[0002] In the field of modern electronic equipment manufacturing, printed circuit boards (PCBs) serve as a crucial carrier for electronic components, and their quality and performance directly affect the stability and reliability of electronic devices. Drilling equipment plays a vital role in the PCB manufacturing process. Its main function is to drill precise holes in the PCB to facilitate the subsequent installation of electronic components and the connection of circuits.

[0003] However, existing drilling equipment mostly uses a helical blade design with equal tooth pitch. When cutting thick copper layers, copper chips are prone to form long continuous chips due to the high ductility of the material. These chips will tightly wrap around the surface of the drill body during the rotation of the drill bit and rub against the hole wall with the reciprocating motion of the drill bit, resulting in excessive roughness of the hole wall and even scratching the inner insulation layer, causing the risk of short circuit. Therefore, a thick-bottom copper PCB drilling machine was designed. Utility Model Content

[0004] To overcome the shortcomings of existing drilling equipment, such as debris adhesion and uneven hole walls during drilling, the technical problem is to provide a thick-bottom copper PCB drilling machine.

[0005] The technical solution is as follows: A thick-bottomed copper PCB drilling machine includes a protective shell, a viewing window, a first electric guide rail, a worktable, a first moving component, a fixing component, a drill, a drill bit, a second electric guide rail, a second moving component, a third electric guide rail, a third moving component, and a chip discharge structure. The protective shell has a viewing window installed on it. The first electric guide rail and the worktable are installed inside the protective shell. The first moving component is installed on the first electric guide rail, and a fixing component is fixedly connected to the first moving component. The drill is installed on the fixing component, and a drill bit is installed on the drill. A variable pitch structure is provided on the cutting section of the drill bit, with the pitch gradually changing from 0.8mm at the front end to 1.2mm at the rear end. A second electric guide rail is installed at the top of the worktable. A second moving component is installed on the second electric guide rail. A third electric guide rail perpendicular to the second electric guide rail is installed on the second moving component. A third moving component is installed on the third electric guide rail, and a chip discharge structure is installed on the third moving component.

[0006] Furthermore, it also includes a jet nozzle, which is installed on one side of the fixture.

[0007] Furthermore, it also includes telescopic sleeves, springs, and suction cups. Two telescopic sleeves are installed at the bottom of the fixing component. The suction cups are slidably connected inside the telescopic sleeves. The bottom of the telescopic sleeves is fixedly connected to the springs, and the other end of the springs is fixedly connected to the suction cups.

[0008] Furthermore, the chip discharge structure includes a chip discharge box, a drain plate, and a chip collection box. The chip discharge box is installed on the third moving part, the drain plate is fixedly connected to the top of the chip discharge box, an inclined groove is installed on one side of the chip discharge box, and a chip collection box is installed on the worktable near the inclined groove.

[0009] Furthermore, the funnel plate has multiple funnel holes, and the center of the funnel plate is funnel-shaped.

[0010] Furthermore, it also includes a controller and indicator lights. The controller is installed on one side of the protective housing, and the indicator lights are electrically connected to the controller. The controller is electrically connected to all electric guide rails and the drilling rig. Beneficial effects

[0011] 1. This utility model uses a variable pitch drill bit structure to force chip breaking, combined with pulsed airflow impact from the jet nozzle, to reduce the friction and adhesion of chips to the hole wall, thus solving the problem of chip adhesion and uneven hole wall in existing drilling equipment.

[0012] 2. This utility model achieves unobstructed chip removal by using a funnel-shaped drain plate and inclined groove structure. Combined with air jet assistance, it increases the chip removal speed and significantly enhances the continuous operation capability of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the internal structure of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the fixing component, air nozzle, and drilling rig of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the second electric guide rail, the second moving part, and the third electric guide rail of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the chip removal box, drain plate, and inclined groove of this utility model.

[0018] Component names and serial numbers in the diagram: 1-Protective housing, 2-Viewing window, 3-Controller, 301-Indicator light, 4-First electric guide rail, 5-Workbench, 6-First moving part, 7-Fixed part, 8-Air nozzle, 9-Drill rig, 10-Drill bit, 11-Telescopic sleeve, 12-Spring, 13-Suction cup, 14-Second electric guide rail, 15-Second moving part, 16-Third electric guide rail, 17-Third moving part, 18-Chip box, 19-Draining plate, 20-Inclined groove, 21-Chip collection box. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0020] Example: A thick-bottom copper PCB drilling machine, such as Figures 1-5 As shown, the system includes a protective housing 1, a viewing window 2, a first electric guide rail 4, a worktable 5, a first moving component 6, a fixing component 7, a drilling rig 9, a drill bit 10, a second electric guide rail 14, a second moving component 15, a third electric guide rail 16, a third moving component 17, and a debris discharge structure. The viewing window 2 is mounted on the protective housing 1. The first electric guide rail 4 and the worktable 5 are installed inside the protective housing 1. The first moving component 6 is mounted on the first electric guide rail 4, and the fixing component 7 is fixedly connected to the first moving component 6. A drilling rig 9 is installed, and a drill bit 10 is installed on the drilling rig 9. A variable pitch structure is set on the cutting section of the drill bit 10, with the pitch gradually changing from 0.8mm at the front end to 1.2mm at the rear end. A second electric guide rail 14 is installed on the top of the worktable 5. A second moving part 15 is installed on the second electric guide rail 14. A third electric guide rail 16, which is perpendicular to the second electric guide rail 14, is installed on the second moving part 15. A third moving part 17 is installed on the third electric guide rail 16. A chip discharge structure is installed on the third moving part 17.

[0021] like Figure 3 As shown, a jet nozzle 8 is installed on one side of the fixture 7. The jet nozzle 8 periodically jets air onto the machining position, and the pulsed airflow periodically impacts the hole wall, shaking off the copper chips that are stuck to the hole wall.

[0022] like Figure 3 As shown, two telescopic sleeves 11 are installed at the bottom of the fastener 7. A suction cup 13 is slidably connected inside the telescopic sleeve 11. A spring 12 is fixedly connected to the bottom of the telescopic sleeve 11. The other end of the spring 12 is fixedly connected to the suction cup 13. During the processing, the suction cup 13 continuously holds the PCB board to ensure the stability of the processing.

[0023] like Figures 4-5 As shown, a chip removal box 18 is installed on the third moving part 17. A drain plate 19 is fixedly connected to the top of the chip removal box 18. An inclined groove 20 is installed on one side of the chip removal box 18. A chip collection box 21 is installed on the worktable 5 near the inclined groove 20 to collect the chips generated by drilling.

[0024] like Figures 4-5 As shown, the slotted plate 19 has multiple slots, and the center of the slotted plate 19 is funnel-shaped, which facilitates the rapid falling of debris into the chip box 18. The PCB board is placed directly on the slotted plate 19 for processing.

[0025] like Figures 1-2As shown, a controller 3 is installed on one side of the protective housing 1. An indicator light 301 is electrically connected to the controller 3. The controller 3 is electrically connected to all electric guide rails and the drilling rig 9. The controller 3 is used to preset processing parameters and control the operation of the equipment. The indicator light 301 displays the equipment status in real time (such as running, standby, fault).

[0026] The operator places the PCB board on the slot 19 and then closes window 2. The controller 3 sends signals to each electrical device according to preset instructions. First, the second electric guide rail 14 and the third electric guide rail 16 begin to move, moving the part of the PCB board to be processed directly below the drill bit 10. Then, the first electric guide rail 4 begins to move, causing the second moving part 15 to move the drill 9 down to contact the PCB board. At this time, the suction cup 13 draws air to hold the PCB board. Then, the drill 9 starts, rotating the drill bit 10. The second moving part 15 slowly moves down, compressing the spring 12. The suction cup 13 gradually retracts into the telescopic sleeve 11. Because the cutting section of the drill bit 10 has a variable pitch structure, the copper chips are forced to break periodically during the cutting process, forming long... For chips with a diameter ≤2mm, during the cutting process, the air nozzle 8 periodically sprays air onto the machining position. The pulsed airflow periodically impacts the hole wall, shaking off the copper chips adhering to the hole wall. The copper chips fall from the drain hole into the chip box 18. After machining is completed, the first electric guide rail 4 moves the first moving part 6 upward, the suction cup 13 stops vacuuming, the spring 12 gradually returns to its original position, and pushes the suction cup 13 to gradually extend the telescopic sleeve 11 until the drill bit 10 leaves the PCB board. At this time, the second electric guide rail 14 and the third electric guide rail 16 move again, so that the next part of the PCB board to be machined moves directly below the drill bit 10. Then the above is repeated until all machining is completed. Open the viewing window 2 and sweep the copper chips out of the chip box 18. The copper chips fall into the chip collection box 21 along the inclined groove 20, completing the copper chip cleaning.

[0027] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A thick copper PCB drilling machine, comprising a protective shell (1), a window (2), a first electric guide rail (4), a workbench (5), a first moving part (6), a fixed part (7) and a drilling machine (9), the window (2) is installed on the protective shell (1), the first electric guide rail (4) and the workbench (5) are installed inside the protective shell (1), the first moving part (6) is installed on the first electric guide rail (4), the fixed part (7) is fixedly connected to the first moving part (6), and the drilling machine (9) is installed on the fixed part (7), characterized in that, The drill bit (10), the second electric guide rail (14), the second moving part (15), the third electric guide rail (16), the third moving part (17) and the chip discharge structure are arranged on the drill (9), the tooth pitch structure is arranged on the cutting section of the drill bit (10), the tooth pitch gradually changes from 0.8mm at the front end to 1.2mm at the rear end, the second electric guide rail (14) is arranged on the top end of the workbench (5), the second moving part (15) is arranged on the second electric guide rail (14), the third electric guide rail (16) is arranged on the second moving part (15) and is perpendicular to the second electric guide rail (14), the third moving part (17) is arranged on the third electric guide rail (16), and the chip discharge structure is arranged on the third moving part (17).

2. A thick copper PCB drill according to claim 1, wherein, The air injection nozzle (8) is arranged on one side of the fixing part (7).

3. The thick copper PCB drill of claim 2, wherein, The telescopic sleeve (11), the spring (12) and the suction cup (13) are arranged on the bottom end of the fixing part (7), the suction cup (13) is slidably connected in the telescopic sleeve (11), the spring (12) is fixedly connected to the bottom end of the telescopic sleeve (11), and the other end of the spring (12) is fixedly connected to the suction cup (13).

4. The thick copper PCB drill of claim 3, wherein, The chip discharge structure comprises the chip removal box (18), the leakage disc (19) and the chip collection box (21), the chip removal box (18) is arranged on the third moving part (17), the leakage disc (19) is fixedly connected to the top end of the chip removal box (18), the inclined chute (20) is arranged on one side of the chip removal box (18), and the chip collection box (21) is arranged on the workbench (5) close to the inclined chute (20).

5. The thick copper PCB drill of claim 4, wherein, A plurality of leakage holes are formed in the leakage disc (19), and the center of the leakage disc (19) is funnel-shaped.

6. A thick copper PCB drill according to claim 5, wherein, The controller (3) and the signal lamp (301) are arranged on one side of the protective shell (1), the signal lamp (301) is electrically connected to the controller (3), and the controller (3) is electrically connected with all the electric guide rails and the drill (9).

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