Power supply control circuit board production process and processing equipment thereof

Abstract

The invention discloses a power supply control circuit board production technology and processing equipment thereof. The processing equipment comprises a supporting base, a drill bit and a positioning carrier used for positioning a PCB bare board. The automatic chip removal device further comprises a turnover mechanism and an automatic switching dust removal mechanism, the turnover mechanism is used for driving the positioning carrier to turn over and upside down to remove chips, and the automatic switching dust removal mechanism comprises a negative pressure dust suction device and a positive and negative automatic switching pipeline. In the drilling process, the negative pressure dust suction device conducts negative pressure suction on the back face, namely the bottom, of the positioning carrier through the positive and negative automatic switching pipeline, chippings leaking out of the bottom in the drilling process are conveniently sucked away, after drilling is completed, the positioning carrier is turned over and reversed through the turnover mechanism, and the drilling efficiency is improved. At the moment, the negative-pressure dust suction device is switched by means of a gravity valve, and the negative-pressure dust suction device achieves the suction effect through a positive and negative automatic switching pipeline and the downward front face of the positioning carrier, and chippings clamped in the hole of the circuit board are cleaned through effective cooperation of dumping and the negative-pressure suction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board processing, in particular to a power control circuit board production process and a processing equipment thereof. BACKGROUND

[0002] As the core of modern power electronic equipment, the design and manufacturing precision of the power control circuit board directly determines the overall performance, efficiency and long-term reliability of the power system. In the processing of the power control circuit board, the drilling quality is the key basis affecting the performance.

[0003] In the processing of the existing power control circuit board, the circuit board is first fixed on the matched carrier, and then the drill is moved to the corresponding position according to the set coordinates for drilling the circuit board by relying on the control system. In the drilling process, the debris can be cleaned by relying on the matched cleaning system.

[0004] However, the existing power control circuit board drilling processing equipment has the following deficiencies: in the general drilling process, debris will leak out from the bottom of the hole, and some debris will also be discharged from the inlet side by the rotating action of the drill bit, but some debris may still remain in the hole. For the power control circuit board, in order to realize signal integrity and meet the complex spatial stacking layout, secondary drilling is often required on the control board. In the secondary drilling process, the hole diameter at the bottom is smaller during the first drilling, and the debris cannot directly leak out from the bottom, and it is difficult to discharge the remaining debris in the hole. It is difficult to completely clean out by using the existing cleaning system or directly using the negative pressure suction method. If these debris cannot be completely and effectively removed, it will cause a series of serious hidden troubles: for example, the debris may cause the copper plating cavity or poor bonding in the subsequent hole metallization process, which directly affects the drilling quality in the secondary drilling. SUMMARY

[0005] The purpose of the present application is to provide a power control circuit board production process and a processing equipment thereof, so as to solve the technical problem that the debris in the drilling process of the power control circuit board in the prior art is not easy to clean effectively, which easily affects the secondary drilling or other hole related processing.

[0006] The technical problem solved by the present application can be realized by the following technical scheme: A power control circuit board processing equipment, comprising a support base, a drill bit and a positioning carrier for positioning a PCB bare board; further comprising: A turnover mechanism is used to drive the positioning carrier to turn over and upside down to discharge the debris; An automatic switching dust removal mechanism is provided, comprising a negative pressure dust collection device and a forward / reverse automatic switching pipeline. The negative pressure end of the negative pressure dust collection device is connected to the forward / reverse automatic switching pipeline. The front and back of the positioning carrier are respectively connected to the forward / reverse automatic switching pipeline, and a gravity valve is provided inside the forward / reverse automatic switching pipeline. Before the positioning carrier is flipped, the gravity valve connects the forward / reverse automatic switching pipeline to the back of the positioning carrier; after the positioning carrier is flipped upside down, the gravity valve connects the forward / reverse automatic switching pipeline to the front of the positioning carrier.

[0007] Preferably, the flipping mechanism includes a flipping plate and a stepper motor; the flipping plate is rotatably connected to the support base, and the stepper motor is used to drive the flipping plate to rotate; the flipping plate is provided with a positioning clamp for fixing the positioning carrier.

[0008] Preferably, the positioning fixture includes an electric telescopic rod and a square docking sleeve. Two electric telescopic rods are provided and symmetrically fixedly connected to both sides of the flip plate. Each telescopic end of the electric telescopic rod is fixedly connected to a locking block. Two square docking sleeves are provided and symmetrically fixedly connected to both sides of the positioning carrier, and the square docking sleeves and locking blocks are correspondingly engaged.

[0009] Preferably, a support box is fixedly connected to the flip plate, and the positioning carrier is positioned on top of the support box; the front of the positioning carrier is provided with a dust suction hood that moves synchronously with the drill bit in the horizontal plane.

[0010] Preferably, the dust collection hood includes an abutment tube and a corrugated telescopic tube, and a mounting seat is provided above the drill bit, the mounting seat moving synchronously with the drill bit; the corrugated telescopic tube is coaxially sleeved on the outer wall of the drill bit, and the top of the corrugated telescopic tube is fixedly connected to the mounting seat, and the abutment tube is fixedly connected to the bottom of the corrugated telescopic tube.

[0011] Preferably, the forward / reverse automatic switching pipeline includes a suction pipe, an auxiliary conduit, and a branch pipe. The suction pipe is fixedly connected to the suction end of the negative pressure vacuuming device. The negative pressure vacuuming device is fixedly connected to one side of the flip plate. Two auxiliary conduits are provided and are symmetrically and vertically fixedly connected to the upper and lower sides of the suction pipe. Each auxiliary conduit has a branch pipe connected to its end away from the suction pipe. The branch pipe at the upper side of the suction pipe communicates with the inside of the support box, and the branch pipe at the lower side of the suction pipe communicates with the vacuum hood.

[0012] Preferably, the gravity valve includes a sliding column and a blocking slider; two blocking sliders are provided and are respectively fixedly connected to the two ends of the sliding column, and the blocking sliders slide in cooperation with the auxiliary conduits, and the ends of the two auxiliary conduits away from the suction tube are provided with communication ports that cooperate with the blocking sliders.

[0013] Preferably, the forward / reverse automatic switching pipeline further includes electromagnets, two of which are fixedly installed at the corresponding branch pipe positions; the sliding column is a magnetic metal body; a guide cylinder is vertically fixedly connected to the flip plate, a ball is slidably installed inside the guide cylinder, and both ends of the guide cylinder are fixedly installed with on / off control switches that are electrically connected to the electromagnets.

[0014] Preferably, the support box is internally fixedly connected with a plurality of support telescopic rods, and each support telescopic rod is fixedly connected to an impact ball at its telescopic end.

[0015] A manufacturing process for a power control circuit board, comprising the following specific steps: Step 1: Load the bare PCB board used for power control onto the positioning carrier; The second step is to drill holes in the bare PCB board using a drill bit; Third step: During the drilling process, the negative pressure dust collection device automatically switches between positive and negative channels to suck up the back of the positioning carrier and clean up the debris that leaks out of the borehole. Step 4: After drilling is completed, the positioning carrier is flipped and turned upside down by the flipping mechanism. The negative pressure dust suction device automatically switches between forward and reverse pipelines to suck up the front of the positioning carrier and clean up the debris poured out of the borehole.

[0016] The beneficial effects of this invention are: 1. During the drilling process, the negative pressure suction device uses an automatic forward / reverse switching pipeline to perform negative pressure suction on the back (bottom) of the positioning carrier, which facilitates the removal of debris leaking from the bottom during drilling. After drilling is completed, the positioning carrier is flipped over by a flipping mechanism. At this time, the gravity valve switches the negative pressure suction device to perform suction on the front of the positioning carrier facing down through the automatic forward / reverse switching pipeline. This effectively combines the tilting and negative pressure suction to clean the debris stuck in the circuit board holes, facilitating subsequent secondary drilling or other hole processing procedures.

[0017] 2. The positioning carrier of this invention is assembled on the support box. When the circuit board on the positioning carrier is facing upward and drilling is being performed, the sealing slider of the gravity valve blocks the auxiliary conduit connecting to the dust collection hood under the action of gravity. The other auxiliary conduit is connected to the inside of the support box, which facilitates the suction of debris by the negative pressure generated by the negative pressure suction device. After the flipping plate drives the positioning carrier to flip and invert, the circuit board on the positioning carrier faces downward. During this process, the gravity valve slides from the blocked auxiliary conduit to the other auxiliary conduit under the action of gravity, which facilitates the sealing of the negative pressure pipeline connected to the side of the support box, realizes the connection of the pipeline corresponding to the dust collection hood, facilitates the negative pressure suction of the drilled position of the circuit board after inversion, and effectively discharges the debris left in the hole.

[0018] 3. After the flip plate is inverted, the telescopic end of the support rod set in the support box faces downward and extends due to gravity. The impact ball at its telescopic end impacts the positioning carrier, which facilitates the vibration of the positioning carrier, thereby helping to shake off the debris in the hole and promoting the cleaning effect.

[0019] 4. During the flipping and inverting process of the flipping plate of the present invention, the set rolling ball rolls along the guide cylinder to the downward side, which facilitates the impact on the on / off control switch on the corresponding side. This makes it easier for the electromagnet facing downward to be energized each time to generate magnetic force, which helps to attract the gravity valve to fall and reduces the probability of it getting stuck and unable to fall effectively. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 ; Figure 3 yes Figure 2 A magnified schematic diagram of the local structure at point A; Figure 4 This is a schematic diagram of the structure in which the blocking slider and the auxiliary conduit are configured in this invention; Figure 5 This is a schematic diagram of the structure in which the on / off control switch and the rolling ball are configured in this invention; Figure 6 This is a schematic diagram of the structure in which the drill bit and the contact pipe are fitted together in this invention; Figure 7 This is a schematic diagram of the structure in which the rotating pressure plate, the locking block, and the electric telescopic rod are connected in this invention. Figure 8 This is a schematic diagram of the structure in which the square docking sleeve and the positioning carrier are connected in the present invention; Figure 9 This is a structural schematic diagram showing the relative positional distribution of the supporting telescopic rod, the supporting box, and the positioning carrier in this invention; Figure 10 This is a schematic diagram of the state after the flipping plate drives the positioning carrier to flip in this invention.

[0021] Explanation of reference numerals in the attached figures: 1. Support base; 2. Flip plate; 3. Three-dimensional coordinate system drive mechanism; 4. Mounting base; 5. Support box; 6. Positioning carrier; 7. Negative pressure dust collection device; 8. Stepper motor; 9. Electric telescopic rod; 10. Suction pipe; 11. Auxiliary guide tube; 12. Branch pipe; 13. Electromagnet; 14. Guide tube; 15. On / off control switch; 16. Sliding column; 17. Sealing slider; 18. Connecting port; 19. Rolling ball; 20. Drill bit; 21. Corrugated telescopic tube; 22. Abutment tube head; 23. Guide rod; 24. Guide sleeve; 25. Clamping block; 26. Drive motor; 27. Rotating pressure plate; 28. Square docking sleeve; 29. ​​Support telescopic rod; 30. Impact ball. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0023] like Figures 1-10 As shown, a power control circuit board processing equipment is used to drill holes in bare PCB boards for power control. The processing equipment includes a support base 1, a drill bit 20, and a positioning carrier 6 for positioning the bare PCB board. The support base 1 includes a bottom plate and side plates fixed to both sides of the plate. The drill bit 20 is used to drill holes in the bare PCB board positioned on the positioning carrier 6. The positioning carrier 6 has a fitting groove that matches the size of the bare PCB board, and the fitting groove has holes distributed according to the circuit board design requirements. When drilling, the drill bit 20 drills based on the positions of the distributed holes, which allows debris to pass through the holes during the drilling process and also prevents the drill bit 20 from contacting the positioning carrier 6. The processing equipment also includes a flipping mechanism and an automatic switching dust removal mechanism. The flipping mechanism is used to drive the positioning carrier 6 to flip and invert to remove chips. This allows some debris that is not easy to leak from the bottom of the drilling position to be discharged after flipping. The automatic switching dust removal mechanism includes a negative pressure dust collection device 7 and a forward / reverse automatic switching pipeline. The negative pressure end of the negative pressure dust collection device 7 is connected to the forward / reverse automatic switching pipeline. The front and back of the positioning carrier 6 are respectively connected to the forward / reverse automatic switching pipeline through pipelines. A gravity valve is installed in the forward / reverse automatic switching pipeline. Before the positioning carrier 6 is flipped, the gravity valve connects the forward / reverse automatic switching pipeline to the back of the positioning carrier 6, which facilitates the direct suction of debris leaking from the bottom of the positioning carrier 6 during drilling. After the positioning carrier 6 is flipped upside down, the gravity valve connects the forward / reverse automatic switching pipeline to the front of the positioning carrier 6, which facilitates negative pressure suction of the downward-facing front of the positioning carrier 6. This helps to clean debris that is difficult to remove from the drilled position of the PCB bare board, facilitating subsequent secondary drilling or other related hole processing.

[0024] It should be noted that the "front" of the aforementioned positioning carrier 6 refers to the side where the bare PCB board is mounted, i.e. Figure 1 The top side of the positioning vehicle 6 is shown, while the bottom side refers to the bottom side.

[0025] A manufacturing process for a power control circuit board, comprising the following specific steps: Step 1: Load the bare PCB board for power control onto the positioning carrier 6; The second step is to drill holes in the bare PCB board using drill bit 20. Third step: During the drilling process, the negative pressure dust suction device 7 uses the forward and reverse automatic switching pipeline to suck up the back of the positioning carrier 6 and clean up the debris leaking out of the hole. Fourth step: After drilling is completed, the positioning carrier 6 is flipped and upside down by the flipping mechanism. The negative pressure dust suction device 7 sucks up the front of the positioning carrier 6 through the forward and reverse automatic switching pipeline to clean up the debris poured out of the hole.

[0026] In some specific implementation schemes, refer to Figure 1 As shown, the flipping mechanism includes a flipping plate 2 and a stepper motor 8; the flipping plate 2 is rotatably connected to the support base 1, and the stepper motor 8 is used to drive the flipping plate 2 to rotate; the flipping plate 2 is provided with a positioning clamp for fixing the positioning carrier 6.

[0027] It should be noted that, in order to ensure that the flip plate 2 can be stably stopped in the corresponding position after rotating to the corresponding position, a stepper motor 8 with a self-locking function can be selected, or an adjustable locking mechanism can be installed on the support base 1 to lock the flip plate 2 after each rotation and position change.

[0028] In a further specific implementation plan, refer to Figure 2 , Figure 7 and Figure 8 As shown, the positioning fixture includes an electric telescopic rod 9 and a square docking sleeve 28. There are two electric telescopic rods 9, which are symmetrically fixedly connected to both sides of the flip plate 2. Each telescopic end of the electric telescopic rod 9 is fixedly connected to a locking block 25. There are two square docking sleeves 28, which are symmetrically fixedly connected to both sides of the positioning carrier 6, and the square docking sleeves 28 and locking blocks 25 are correspondingly engaged.

[0029] The square docking sleeve 28 and the locking block 25 work together to fix the positioning carrier 6 on the flip plate 2. When it is necessary to replace the positioning carrier 6 with other specifications, the electric telescopic rod 9 can be directly controlled to retract, so that the square docking sleeve 28 and the locking block 25 can be separated.

[0030] In some specific implementation schemes, refer to Figure 7As shown, the positioning fixture also includes a clamping mechanism for clamping the bare PCB board on the positioning carrier 6. The clamping mechanism includes a drive motor 26 and a rotating pressure plate 27. The drive motor 26 is fixedly mounted on the clamping block 25. It should be noted that the clamping block 25 has a certain length reserved to ensure that after the square docking sleeve 28 is inserted, a part of it can still be outside, which is convenient for supporting the drive motor 26. The drive motor 26 can be a double-headed motor, and the main shaft end of the drive motor 26 is fixedly connected to the rotating pressure plate 27. After the bare PCB board is fitted and installed on the positioning carrier 6, the drive motor 26 is controlled to drive the rotating pressure plate 27 to rotate and press against the edge of the bare PCB board to prevent it from falling off during the flipping process.

[0031] It should be noted that the rotating pressure plate 27 can be set as a telescopic plate, which makes it convenient to adjust the length for clamping according to the size of the bare PCB board.

[0032] In some specific implementations, a support box 5 is fixedly connected to the flip plate 2, and the positioning carrier 6 is positioned on top of the support box 5. The top of the support box 5 is open, which ensures that the inside of the support box 5 is connected to the pre-made hole on the positioning carrier 6. This enables the automatic forward and reverse switching pipeline to be connected to the back of the positioning carrier 6 through the support box 5. The front of the positioning carrier 6 is provided with a dust suction hood that moves synchronously with the drill bit 20 in the horizontal plane. This enables the automatic forward and reverse switching pipeline to be connected to the front of the positioning carrier 6 through the dust suction hood.

[0033] Among them, reference Figure 6 As shown, the dust collection hood includes an abutment tube 22 and a corrugated telescopic tube 21. A three-dimensional coordinate system drive mechanism 3 for moving the drill bit 20 is installed on the flip plate 2. The three-dimensional coordinate system drive mechanism 3 includes an X-axis drive rail, a Y-axis drive rail, and a Z-axis electric push rod. The X-axis drive rail is directly fixedly connected to the flip plate 2. The Y-axis drive rail is slidably connected to the X-axis drive rail through a slide block. The Z-axis electric push rod is used to drive the drill bit 20 to rise and fall. The movement is controlled according to the circuit board design, which facilitates drilling in different positions. A mounting base 4 is provided above the drill bit 20. The mounting base 4 moves synchronously with the drill bit 20. A motor for driving the drill bit 20 to rotate at high speed is installed in the mounting base 4. The corrugated telescopic tube 21 is coaxially sleeved on the outer wall of the drill bit 20, and the top of the corrugated telescopic tube 21 is fixedly connected to the mounting base 4. The abutment tube 22 is fixedly connected to the bottom of the corrugated telescopic tube 21. The initial position of the abutment tube 22 is lower than the end of the drill bit 20.

[0034] When the drill bit 20 moves to align with the corresponding position on the bare PCB board, it moves downward to drill a hole. At this time, the abutment tube 22 descends first and abuts against the bare PCB board, covering the drilling position to prevent debris from splashing to other positions. At the same time, since the corrugated telescopic tube 21 is compressible, it does not hinder the descent of the drill bit 20.

[0035] It should be noted that, in order to avoid contact between the abutment head 22 and the drill bit 20 during their movement, a guide rod 23 is fixedly connected to one side of the abutment head 22, and a guide sleeve 24 is fixedly connected to one side of the mounting base 4, with the guide rod 23 passing through the guide sleeve 24.

[0036] In some specific implementation schemes, refer to Figures 2 to 4 As shown, the forward / reverse automatic switching pipeline includes a suction pipe 10, auxiliary conduits 11, and branch pipes 12. The suction pipe 10 is fixedly connected to the suction end of the negative pressure vacuum cleaner 7, and here the suction pipe 10 is a square tube. The negative pressure vacuum cleaner 7 is fixedly connected to one side of the flip plate 2. There are two auxiliary conduits 11, which are symmetrically and vertically fixedly connected to the upper and lower sides of the suction pipe 10. Each auxiliary conduit 11 has a branch pipe 12 connected to the end away from the suction pipe 10. The branch pipe 12 at the upper side of the suction pipe 10 is connected to the inside of the support box 5, and the branch pipe 12 at the lower side of the suction pipe 10 is connected to the vacuum hood. Specifically, it can be connected to the abutment pipe 22 through a metal corrugated hose. The gravity valve is located between the two auxiliary conduits 11.

[0037] It should be noted that the negative pressure vacuuming device 7 may include a vacuum cleaner or a negative pressure suction pump and a dust collection box connected to the air outlet of the vacuum cleaner or the negative pressure suction pump.

[0038] In a further specific implementation plan, refer to Figure 4 As shown, the gravity valve includes a sliding column 16 and a blocking slider 17. There are two blocking sliders 17, which are fixedly connected to the two ends of the sliding column 16 respectively. The blocking sliders 17 are slidably engaged with the auxiliary conduit 11. The ends of the two auxiliary conduits 11 away from the suction tube 10 are provided with a connecting port 18 that engages with the blocking slider 17. It should be noted that the port of the auxiliary conduit 11 that connects to the suction tube 10 is the same size as the blocking slider 17 to facilitate the entry and exit of the blocking slider 17. The size of the connecting port 18 is smaller than that of the blocking slider 17.

[0039] It should be noted that, in order to ensure that the blocking slider 17 moves effectively under the action of gravity during the flipping process, the sliding column 16 can be a metal column with a large mass.

[0040] When the flip plate 2 is not flipped, due to gravity, the entire gravity valve falls into the auxiliary conduit 11 connecting the dust collection hood and is blocked by the corresponding blocking slider 17. At this time, the other blocking slider 17 is away from the auxiliary conduit 11 connecting the support box 5, thus ensuring that the suction pipe 10 can effectively act on the support box 5, making it convenient to suck up the drill debris that leaks into the support box 5 from the back of the positioning carrier 6. When the flip plate 2 is flipped and reversed, the entire gravity valve slides from the auxiliary conduit 11 connecting the dust collection hood to the auxiliary conduit 11 connecting the support box 5 due to the reversal, thus blocking the corresponding connection 18. This disconnects the pipe between the suction pipe 10 and the support box 5, ensuring that the suction pipe 10 can effectively suck up the space corresponding to the dust collection hood, making it convenient to suck up the debris in the drill hole covered by the dust collection hood. At the same time, due to the flipping and reversal of the PCB bare board, the debris that could not fall from the bottom can fall out from the larger inlet side of the drill hole, which is conducive to suction.

[0041] In some specific implementation schemes, to ensure that the gravity valve can slide effectively after each flip plate 2 flips; see reference Figures 3 to 5 As shown, the forward / reverse automatic switching pipeline also includes electromagnets 13. There are two electromagnets 13, which are fixedly installed at the corresponding branch pipes 12. The sliding column 16 is a magnetic metal body, such as an iron column. A guide cylinder 14 is vertically fixedly connected to the flip plate 2. A ball 19 is slidably installed inside the guide cylinder 14. Both ends of the guide cylinder 14 are fixedly installed with on / off control switches 15 that are electrically connected to the electromagnets 13. The on / off control switches 15 are push-button switches, with the push-button side facing the inside of the guide cylinder 14. The on / off control switch 15 at the upper position is connected in series with the electromagnet 13 at the upper position, and the on / off control switch 15 at the lower position is connected in series with the electromagnet 13 at the lower position.

[0042] During the flipping process of the flip plate 2, the ball 19 always rolls along the guide tube 14 to the downward side, thereby pressing against the on / off control switch 15 located on the lower side. This facilitates the electromagnet 13 on the corresponding side to generate magnetic force, attracting the slide column 16 of the gravity valve. This allows the slide column 16 to fall effectively under the action of gravity and magnetic attraction.

[0043] In some specific implementation schemes, refer to Figure 9 As shown, multiple support telescopic rods 29 are fixedly connected inside the support box 5. The telescopic end of each support telescopic rod 29 faces the position of the positioning carrier 6, and an impact ball 30 is fixedly connected to the telescopic end of each support telescopic rod 29.

[0044] Each time the flipping plate 2 flips and the positioning carrier 6 is flipped and inverted, the telescopic end of each support telescopic rod 29 faces downward and extends under the action of gravity. It also relies on the impact ball 30 to hit the positioning carrier 6, which makes the positioning carrier 6 vibrate and helps to shake off and clean the debris in the drilled hole position of the PCB bare board.

[0045] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: First, the bare PCB board is fitted into the fitting slot on the positioning carrier 6, and the drive motor 26 is controlled to drive the rotating pressure plate 27 to rotate and press it onto the edge of the bare PCB board, keeping it fixed on the positioning carrier 6.

[0046] Then control and adjust the position of the drill bit 20. When the drill bit 20 moves to align with the corresponding position on the bare PCB board, it moves downward to drill a hole. At this time, the abutting tube head 22 descends first and abuts against the bare PCB board, covering the drilling position to prevent debris from splashing to other positions. At the same time, since the corrugated telescopic tube 21 is compressible, it avoids hindering the descent of the drill bit 20. During the drilling process, due to gravity, the entire gravity valve falls into the auxiliary conduit 11 of the connecting end pipe 22, and the corresponding connecting port 18 is blocked by the corresponding sealing slider 17. At this time, the other sealing slider 17 is away from the auxiliary conduit 11 inside the connecting support box 5, thereby ensuring that the suction pipe 10 can effectively act on the support box 5, and making it convenient to suck up the drilling debris that leaks into the support box 5 from the back of the positioning carrier 6, i.e. the bottom, during the drilling process. After drilling is completed, the drill bit 20 is raised while the connecting pipe 22 is kept in contact with the drilling position. At this time, the stepper motor 8 controls the flip plate 2 to flip, so that the positioning carrier 6 is upside down. At this time, the entire gravity valve slides from the auxiliary conduit 11 connecting the connecting pipe 22 to the auxiliary conduit 11 connecting the support box 5 due to the inversion, thereby blocking the corresponding connecting port 18. This disconnects the pipeline between the suction pipe 10 and the support box 5, ensuring that the suction pipe 10 can effectively suck the space corresponding to the dust collection hood, making it convenient to suck away the debris at the drilling position covered by the connecting pipe 22. At the same time, due to the flipping and inversion of the PCB bare board, the debris that originally could not fall from the bottom can fall out from the larger inlet side of the drilling hole, which is conducive to suction. Meanwhile, after being flipped upside down, the telescopic ends of each support telescopic rod 29 in the support box 5 face downwards and extend under the action of gravity. They also rely on the impact ball 30 to impact the positioning carrier 6, which makes the positioning carrier 6 vibrate and facilitates the shaking and cleaning of debris in the drilled hole position of the PCB bare board.

[0047] It should be noted that during the flipping process of the flipping plate 2, the ball 19 always rolls along the guide tube 14 to the downward side, thereby pressing against the on / off control switch 15 located on the lower side. This facilitates the electromagnet 13 on the corresponding side to generate magnetic force, attracting the slide column 16 of the gravity valve. This allows the slide column 16 to fall effectively under the action of gravity and magnetic attraction.

[0048] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A power control circuit board processing apparatus comprising a support base (1), a drill bit (20) and a positioning carrier (6) for positioning a PCB blank; characterized in that, Also include: The turnover mechanism is used for driving the positioning carrier (6) to overturn and upside down to arrange the scraps; The automatic switching dust removal mechanism includes a negative pressure suction device (7) and a positive and negative automatic switching pipeline, the negative pressure end of the negative pressure suction device (7) is communicated with the positive and negative automatic switching pipeline, the front and back of the positioning carrier (6) are respectively communicated with the positive and negative automatic switching pipeline, and the positive and negative automatic switching pipeline is provided with a gravity valve, before the positioning carrier (6) is overturned, the gravity valve makes the positive and negative automatic switching pipeline communicate with the back of the positioning carrier (6); after the positioning carrier (6) is upside down and overturned, the gravity valve makes the positive and negative automatic switching pipeline communicate with the front of the positioning carrier (6).

2. The power control board processing apparatus according to claim 1, wherein The turnover mechanism includes a turnover plate (2) and a stepping motor (8); the turnover plate (2) is rotatably connected to the support base (1), and the stepping motor (8) is used for driving the turnover plate (2) to rotate; the turnover plate (2) is provided with a positioning clamp for fixing the positioning carrier (6).

3. The power control board processing apparatus according to claim 2, wherein The positioning clamp includes an electric telescopic rod (9) and a square butt joint sleeve (28), the electric telescopic rod (9) is provided with two and is fixedly connected to the two sides of the turnover plate (2) in a symmetrical manner, the telescopic end of each electric telescopic rod (9) is fixedly connected with a clamping block (25), and the square butt joint sleeve (28) is provided with two and is fixedly connected to the two sides of the positioning carrier (6) in a symmetrical manner, and the square butt joint sleeve (28) is correspondingly matched with the clamping block (25).

4. The power control board processing apparatus according to claim 2, wherein The turnover plate (2) is fixedly connected with a support box (5), and the positioning carrier (6) is matched at the top of the support box (5); the front of the positioning carrier (6) is provided with a dust cover body that moves synchronously with the drill bit (20) in a horizontal plane.

5. The power control board processing apparatus according to claim 4, wherein The dust cover body includes an abutting pipe head (22) and a corrugated telescopic pipe (21), the drill bit (20) is provided with a mounting seat (4) above, the mounting seat (4) moves synchronously with the drill bit (20); the corrugated telescopic pipe (21) is coaxially sleeved on the outer wall of the drill bit (20), and the top of the corrugated telescopic pipe (21) is fixedly connected with the mounting seat (4); the abutting pipe head (22) is fixedly connected to the bottom of the corrugated telescopic pipe (21).

6. The power control board processing apparatus according to claim 4, wherein The positive and negative automatic switching pipeline includes a suction pipe (10), an auxiliary conduit (11) and a branch pipe (12), the suction pipe (10) is fixedly connected to the suction end of the negative pressure suction device (7); the negative pressure suction device (7) is fixedly connected to one side of the turnover plate (2); the auxiliary conduit (11) is provided with two and is fixedly connected to the upper and lower sides of the suction pipe (10) in a symmetrical and vertical manner, the end of each auxiliary conduit (11) away from the suction pipe (10) is connected with a branch pipe (12), the branch pipe (12) at the upper position of the suction pipe (10) is communicated with the inside of the support box (5), and the branch pipe (12) at the lower position of the suction pipe (10) is communicated with the dust cover body.

7. The power control board processing apparatus according to claim 6, wherein The gravity valve comprises a slide post (16) and blocking slides (17); the blocking slides (17) are provided with two and are fixedly connected at two ends of the slide post (16) respectively, and the blocking slides (17) are in sliding fit with auxiliary pipes (11); the two auxiliary pipes (11) are provided with communication openings (18) matched with the blocking slides (17) at one end away from the suction pipe (10).

8. The power control board processing apparatus according to claim 7, wherein The positive and negative automatic switching pipeline further comprises electromagnets (13), the electromagnets (13) are provided with two and are fixedly arranged at positions corresponding to the branch pipes (12) respectively; the slide post (16) is a magnetic metal body; the overturning plate (2) is vertically fixedly connected with a guide cylinder (14), the guide cylinder (14) is slidably provided with a rolling ball (19) inside, and both ends of the guide cylinder (14) are fixedly installed with on-off control switches (15) electrically connected with the electromagnets (13) correspondingly.

9. The power control board processing apparatus according to claim 4, wherein The support box (5) is fixedly connected with a plurality of support telescopic rods (29) inside, and the telescopic ends of the support telescopic rods (29) are fixedly connected with impact balls (30).

10. A power control circuit board production process, implemented by the power control circuit board processing apparatus according to any one of claims 1 to 9, characterized in that, The specific steps are as follows: Step 1: load the PCB bare board for power control to the positioning carrier (6); Step 2: drill holes on the PCB bare board through the drill bit (20); Step 3: in the drilling process, the negative pressure dust collection device (7) sucks the back of the positioning carrier (6) through the positive and negative automatic switching pipeline to clean the debris leaked in the drilling; Step 4: after the drilling is completed, the positioning carrier (6) is overturned and upside down through the overturning mechanism, and the negative pressure dust collection device (7) sucks the front of the positioning carrier (6) through the positive and negative automatic switching pipeline to clean the debris poured out in the drilling.

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