PCB aluminum substrate drilling equipment

Abstract

The application belongs to the technical field of metal plate processing, and specifically relates to a PCB aluminum substrate drilling equipment, which comprises a bottom plate, the upper and lower end faces of the bottom plate are jointly provided with a positioning mechanism, a first limiting mechanism is arranged on the positioning mechanism and located at the front end of the drilling equipment, and a second limiting mechanism is arranged on the positioning mechanism and located directly above the synchronous mechanism; the position of the PCB aluminum substrate to be processed in the front-rear direction is preliminarily limited by a T-shaped plate, a positioning plate and a baffle, then the arc-shaped blocks are brought into contact with the PCB aluminum substrate to be processed by the limiting plates moving towards each other, the clamps are self-clamped to limit the position of the PCB aluminum substrate to be processed at the left and right ends after being acted on by the arc-shaped blocks, and finally the metal scraps and burrs in the hole inner wall are gradiently cleaned by a polishing cylinder, an upper suction disc, a lower suction disc and a cleaning cloth, which is beneficial to improving the subsequent electroplating quality.

Description

Technical Field

[0001] This invention belongs to the field of metal sheet processing technology, and specifically relates to a drilling device for PCB aluminum substrate. Background Technology

[0002] Aluminum substrate is a low-alloyed aluminum-magnesium-silicon high-plasticity alloy plate. At the same time, aluminum substrate is also a metal-based copper-clad laminate. Generally, a single-sided board consists of three layers: a circuit layer (copper foil), an insulating layer, and a metal base layer. It has good thermal conductivity, electrical insulation, and machinability.

[0003] In existing technology, when drilling holes in PCB aluminum substrates, the PCB aluminum substrate is first placed between a pad and a cover plate, and then fixed with tape. Some manufacturers also choose to fix the aluminum substrate manually by hand in order to reduce production costs. However, due to the instability of tape adhesion or interference from external unstable factors during production, the drilling accuracy of PCB aluminum substrates is affected.

[0004] Although existing technologies reduce entry and exit burrs after drilling PCB aluminum substrates using cover plates and backing plates respectively, the drill bit generally reaches high temperatures during high-speed rotation, melting metal debris. After the drill bit retracts, the high-speed splashed metal debris cools back onto the inner wall of the PCB aluminum substrate hole (except for laser drilling), thus affecting the subsequent electroplating quality. At the same time, during a period of operation and when the drill bit is being changed, the drill bit may experience slight breakage, and during the retraction process, it may drag larger metal fragments, causing scratches on the PCB aluminum substrate hole, thus affecting the porosity of the glass fiber and the electroplating quality. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a PCB aluminum substrate drilling device, including a base plate, a positioning mechanism is provided on the upper and lower end faces of the base plate, a synchronization mechanism is provided in the middle of the base plate, a drilling mechanism is provided above the rear side of the positioning mechanism, a first-level limiting mechanism is provided on the positioning mechanism at the front end of the drilling mechanism, and a second-level limiting mechanism is provided on the positioning mechanism directly above the synchronization mechanism.

[0006] The synchronization mechanism includes a hollow groove, a cross plate, a reinforcing column, a fixing block, a trapezoidal platform, a turntable, an electric telescopic rod, and a storage compartment. A hollow groove is formed in the middle of the base plate. Cross plates are evenly and slidably installed in the hollow groove from left to right. A reinforcing column is fixedly installed between adjacent cross plates. A fixing block is slidably installed in the middle of the upper surface of the cross plate. A trapezoidal platform is slidably installed on the upper surface of the fixing block and the upper surface of the cross plate. A turntable is rotatably installed on the upper surface of the trapezoidal platform. An electric telescopic rod is installed on the upper part of the turntable. A storage compartment is installed on the upper end of the electric telescopic rod.

[0007] Preferably, the positioning mechanism includes a right-angle seat, a long rail, a sliding block, a worktable, a rectangular groove, and a T-shaped plate. The lower end face of the base plate has right-angle seats arranged in a rectangular pattern. The upper end face of the base plate is symmetrically equipped with long rails. Sliding blocks are slidably installed on the long rails. The upper end faces of the sliding blocks at both ends are equipped with a worktable. A rectangular groove is provided in the middle of the worktable. A T-shaped plate is movably installed at the front end of the upper end face of the worktable.

[0008] Preferably, the drilling mechanism includes a vertical plate, a T-shaped block, a locking block, an I-shaped seat, a support plate, an L-shaped plate, a moving block, and a drill. The vertical plate is symmetrically and slidably installed on the rear side of the upper surface of the worktable. T-shaped blocks are symmetrically installed on the front end of the vertical section of the vertical plate. A locking block is slidably installed between the upper and lower T-shaped blocks via a connecting rod. An I-shaped seat is installed on the front end of the locking blocks at both ends. A support plate is installed between the middle of the rear end of the I-shaped seat and the worktable. An L-shaped plate is installed on the front end of the support plate. A moving block that is slidably fitted with the support plate is evenly installed from left to right on the lower end of the horizontal section of the L-shaped plate. A drill is installed between the moving block and the L-shaped plate.

[0009] Preferably, the primary limiting mechanism includes a fixed seat, a hydraulic rod, a right-angle plate, an adjusting rod, a positioning block, and a baffle. Fixed seats are symmetrically installed on the left and right sides of the rear side of the upper surface of the worktable. A hydraulic rod is installed on the front side of the fixed seat. A right-angle plate that engages with the T-shaped plate is installed on the front side of the hydraulic rod. An adjusting rod is installed on the left side of the right-angle plate. A positioning block that is threadedly engaged with the adjusting rod is slidably installed on the left side of the T-shaped plate. A baffle is installed on the rear side of the upper surface of the worktable.

[0010] Preferably, the secondary limiting mechanism includes a lead screw, a spiral groove, a guide rod, a limiting plate, claws, and clamping plates. The lead screw is mounted on the front end of the lower end face of the worktable via symmetrical lugs. Four sets of spiral grooves are evenly distributed on the outer wall of the lead screw from left to right, and the spiral grooves in the same set have opposite directions of rotation. The guide rod is mounted on the rear end of the lower end face of the worktable via symmetrical lugs. Eight limiting plates are slidably mounted on the outer wall of the guide rod from left to right. Each pair of adjacent limiting plates forms a group, for a total of four groups. The limiting plates are simultaneously threadedly installed with the lead screw. Claws are symmetrically installed on the upper part of each limiting plate, and clamping plates are symmetrically installed on the side of the claws away from the limiting plates.

[0011] Preferably, magnets are installed on both the annular inner wall and the bottom wall of the storage compartment. A base column connected to the storage compartment is installed at the middle of the upper end of the storage compartment. A lower suction cup connected to the base column is installed at the upper end of the base column. A polishing cylinder connected to the lower suction cup is installed at the upper end of the lower suction cup. The polishing cylinder is divided into a precision area and a rough area. An upper suction cup connected to the polishing cylinder is installed at the upper end of the polishing cylinder. Cleaning cloths are installed at the positions between the upper suction cup, the lower suction cup, and the polishing cylinder.

[0012] Preferably, the clamping end of the clamping plate has a sawtooth structure, a telescopic column is slidably installed in the middle of the claw, an arc-shaped block is installed at one end of the telescopic column near the clamping plate, and a guide groove that cooperates with the telescopic column is opened on the upper surface of the workbench.

[0013] Preferably, the T-shaped plate has movable grooves evenly distributed from left to right on one end face near the rectangular groove, a positioning plate is slidably installed in the movable groove, and a connecting column is installed between adjacent positioning plates, and a marking ruler is engraved on the upper end face of the left side of the T-shaped plate.

[0014] Preferably, the lower end face diameter of the upper suction cup is larger than the upper end face diameter, the upper end face diameter of the lower suction cup is larger than the lower end face diameter, the outer walls of both the upper and lower suction cups are provided with dense through holes, and the opposite surfaces of the upper and lower suction cups are also provided with through holes evenly, and the through holes on the outer walls of the upper and lower suction cups are designed to be inclined.

[0015] Preferably, a telescopic sealing ring is installed on the outer wall of the upper end of the base column, and the upper diameter of the telescopic sealing ring is larger than the lower diameter, while the upper diameter of the telescopic sealing ring is larger than the diameter of the polishing cylinder.

[0016] The present invention has the following beneficial effects:

[0017] 1. This invention allows operators to observe the changes in the pointer on the positioning block and the scale on the marking ruler, and manually rotate the adjusting rod to control the positioning block to move back and forth to the designated position at the left end of the T-shaped plate. The positioning plate moves synchronously with the positioning block, thereby ensuring that the centerline of the PCB aluminum substrate of different widths to be processed always coincides with the centerline of the two limiting plates directly opposite it. Then, the right-angle plate drives the T-shaped plate to retract under the action of the hydraulic rod until the rear end of the PCB aluminum substrate to be processed contacts the baffle. This initially limits the position of the PCB aluminum substrate to be processed in the front-back direction, providing a preliminary stable environment for its subsequent processing, indirectly improving the product qualification rate, reducing production costs, maximizing profits, and effectively improving the competitiveness of enterprises.

[0018] 2. In this invention, the limiting plates in the same group move towards each other under the action of the lead screw and the guide rod until the arc block contacts and presses against the aluminum substrate of the PCB to be processed. Under the reverse action of the arc block, the clamping plate self-clamps the left and right ends of the aluminum substrate of the PCB to be processed, thereby further limiting the position of the aluminum substrate of the PCB to be processed in the left and right directions. Thus, the position of the aluminum substrate to be processed is fully limited in the four directions of front, back, left and right, avoiding vibration displacement of the aluminum substrate of the PCB to be processed that affects the processing accuracy and improving the processing accuracy.

[0019] 3. This invention uses a polishing cylinder to perform graded polishing on the holes processed by the drill bit, effectively removing residual metal debris from the inner wall of the holes and improving the roughness of the inner wall of the holes after drilling, i.e., reducing burrs on the inner wall of the holes. At the same time, it repairs scratches caused by larger metal fragments, further improving the quality of subsequent electroplating and enhancing product quality. Meanwhile, the upper and lower suction cups simultaneously collect metal residues from high-speed rotation, and on this basis, the inner wall of the holes is wiped with a cleaning cloth to further reduce residual metal debris on the inner wall of the holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is an appendix to the present invention. Figure 1 A magnified schematic diagram of the local structure at point A in the middle.

[0022] Figure 3 This is an appendix to the present invention. Figure 1 Left view.

[0023] Figure 4 This is an appendix to the present invention. Figure 1 Top view.

[0024] Figure 5 This is a partial structural cross-sectional view of the drilling mechanism and the secondary limiting mechanism of the present invention.

[0025] Figure 6 This is a partial cross-sectional view of the positioning mechanism and the first-level limiting mechanism of the present invention.

[0026] Figure 7 This is a partial structural cross-sectional view of the synchronization mechanism of the present invention.

[0027] Figure 8 This is a schematic diagram of the three-dimensional assembly structure of the base column, polishing cylinder, cleaning cloth, upper suction cup and lower suction cup of the present invention.

[0028] Figure 9 This is a partial cross-sectional view of the internal structure of the storage compartment of the present invention.

[0029] Numbered in the diagram: 1. Base plate; 2. Positioning mechanism; 21. Right-angle seat; 22. Long rail; 23. Sliding block; 24. Worktable; 25. Rectangular groove; 26. T-shaped plate; 271. Movable groove; 272. Positioning plate; 273. Connecting column; 274. Marker; 3. Synchronization mechanism; 31. Hollow groove; 32. Cross plate; 33. Reinforcing column; 34. Fixing block; 35. Trapezoidal platform; 36. Turntable; 37. Electric telescopic rod; 38. Storage compartment; 381. Magnet; 382. Base column; 3821. Telescopic closed ring; 383. Lower suction cup; 3831. Through hole; 384. Polishing 385. Light tube; 386. Upper suction cup; 387. Cleaning cloth; 4. Drilling mechanism; 41. Vertical plate; 42. T-shaped block; 43. Clamping block; 44. I-shaped base; 45. Support plate; 46. L-shaped plate; 47. Moving block; 48. Drilling tool; 5. Primary limit mechanism; 51. Fixed base; 52. Hydraulic rod; 53. Right angle plate; 54. Adjusting rod; 55. Positioning block; 56. Baffle; 6. Secondary limit mechanism; 61. Lead screw; 62. Spiral groove; 63. Guide rod; 64. Limiting plate; 65. Claw; 651. Telescopic column; 652. Arc-shaped block; 653. Guide groove; 66. Clamping plate. Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] It should be noted that the terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0032] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] Reference Figure 1 , Figure 5 and Figure 7 It can be seen that a PCB aluminum substrate drilling device has a positioning mechanism 2 on both the upper and lower surfaces of the base plate 1, a synchronization mechanism 3 in the middle of the base plate 1, a drilling mechanism 4 above the rear side of the positioning mechanism 2, a first-level limiting mechanism 5 located at the front end of the drilling mechanism 4 on the positioning mechanism 2, and a second-level limiting mechanism 6 located directly above the synchronization mechanism 3 on the positioning mechanism 2.

[0034] Reference Figure 1 and Figure 3It can be seen that the positioning mechanism 2 includes a right-angle seat 21, a long rail 22, a sliding block 23, a worktable 24, a rectangular groove 25, and a T-shaped plate 26. The right-angle seat 21 is rectangularly distributed on the lower end face of the base plate 1. The long rail 22 is symmetrically installed on the left and right sides of the upper end face of the base plate 1. The sliding block 23 is slidably installed on the long rail 22. The upper end face of the sliding block 23 at both ends is jointly installed on the worktable 24. A rectangular groove 25 is opened in the middle of the worktable 24. The T-shaped plate 26 is movably installed at the front end of the upper end face of the worktable 24.

[0035] Reference Figure 1 , Figure 4 and Figure 5 It can be seen that the first-level limit mechanism 5 includes a fixed seat 51, a hydraulic rod 52, a right-angle plate 53, an adjusting rod 54, a marking block 55, and a baffle 56. Fixed seats 51 are symmetrically installed on the left and right sides of the rear side of the upper end face of the worktable 24. A hydraulic rod 52 is installed on the front end face of the fixed seat 51. A right-angle plate 53 that is snapped onto the front end face of the hydraulic rod 52 is installed. An adjusting rod 54 is installed on the left side of the right-angle plate 53. A marking block 55 that is threaded onto the adjusting rod 54 is slidably installed on the left side of the T-shaped plate 26. A baffle 56 is installed on the rear side of the upper end face of the worktable 24.

[0036] Reference Figure 5 and Figure 6 It can be seen that the T-shaped plate 26 has movable grooves 271 evenly opened from left to right on one end face near the rectangular groove 25. The positioning plate 272 is slidably installed in the movable groove 271, and the connecting column 273 is installed between adjacent positioning plates 272. The upper end face of the left side of the T-shaped plate 26 is engraved with a marking ruler 274.

[0037] First, the forces applied to the base plate 1 are rationally decomposed by the rectangular right-angle seats 21, which provide the most basic stable support for the operation of each mechanism and initially create a stable processing environment. Then, the worktable 24 is driven to move backward by the sliding block 23 under the guidance of the long rail 22. Specifically, the sliding block 23 can be driven by an electric slider, which makes it convenient for operators to clean and maintain the synchronization mechanism 3 regularly and improve the linkage and mobility between mechanisms.

[0038] Next, based on the width of the PCB aluminum substrate to be processed, the adjusting rod 54 is precisely rotated a certain number of times, so that the positioning block 55, under the action of the adjusting rod 54, drives the positioning plate 272 to slide along the corresponding movable groove 271 to the designated position (that is, at this time, the pointer on the positioning block 55 points to the corresponding scale number according to the width of the PCB aluminum substrate to be processed), thereby ensuring that the center line position of the PCB aluminum substrates of different thicknesses is always in the same position, expanding the product operation range, and also improving the adaptability, orderliness and standardization of processing;

[0039] Finally, under the contraction of the hydraulic rod 52, the right-angle plate 53 drives the T-shaped plate 26 to move (initially, the PCB aluminum substrate to be processed in the area surrounded by the rear end face of the T-shaped plate 26, the upper end face of the worktable 24, and the vertical plate 41 that is perpendicular to both the T-shaped plate 26 and the worktable 24 moves synchronously to the rear end), until the rear end face of the PCB aluminum substrate to be processed contacts the front end face of the baffle 56. At this point, the positional change of the PCB aluminum substrate in the front-back direction is jointly limited by the T-shaped plate 26 and the baffle 56, which provides a preliminary stable processing state for the subsequent processing of the drilling mechanism 4, which is beneficial to improving the processing accuracy of the drilling mechanism 4.

[0040] By connecting column 273, one power source can control multiple positioning plates 272 to simultaneously limit multiple PCB aluminum substrates to be processed, which helps to improve processing efficiency.

[0041] Reference Figure 1 , Figure 2 and Figure 5 It can be seen that the secondary limiting mechanism 6 includes a lead screw 61, a spiral groove 62, a guide rod 63, a limiting plate 64, a claw 65, and a clamping plate 66. The lead screw 61 is installed on the front end of the lower end face of the worktable 24 through symmetrical lugs. The outer wall of the lead screw 61 is evenly provided with four sets of spiral grooves 62 from left to right, and the spiral grooves 62 in the same set have opposite rotation directions. The guide rod 63 is installed on the rear end of the lower end face of the worktable 24 through symmetrical lugs. Eight limiting plates 64 are slidably installed on the outer wall of the guide rod 63 from left to right. Each pair of adjacent limiting plates 64 is a group, with a total of four groups. The limiting plates 64 are also threadedly installed with the lead screw 61. Each limiting plate 64 is symmetrically installed with claws 65 on the front and back. The side of the claws 65 away from the limiting plate 64 is symmetrically installed with clamping plates 66.

[0042] Reference Figure 1 and Figure 2 It can be seen that the clamping end of the clamping plate 66 has a sawtooth structure, and a telescopic column 651 is slidably installed in the middle of the claw 65. An arc-shaped block 652 is installed at one end of the telescopic column 651 near the clamping plate 66. A guide groove 653 that cooperates with the telescopic column 651 is opened on the upper surface of the worktable 24.

[0043] Explanation of the principle of the secondary limiting mechanism 6, using the set of limiting plates 64 located at the leftmost end and the components above them:

[0044] First, the limiting plates 64 at the left and right ends move towards or away from each other under the combined action of the screw 61 thread drive and the guide rod 63 (the left and right sides of the spiral groove 62 in the same group rotate in opposite directions). Specifically, the screw 61 can be driven to rotate by an external motor. At the same time, the claws 65 at the left and right ends move synchronously with the corresponding limiting plates 64 until the left and right ends of the PCB aluminum substrate to be processed come into contact with and are pressed against the corresponding arc blocks 652 (initially, the upper and lower clamping plates 66 are in the open state).

[0045] Then, after being subjected to force, the arc-shaped block 652 moves towards the direction of the jaw 65. At this time, the arc-shaped surface of the arc-shaped block 652 gradually contacts and presses the end of the clamping plate 66 near the jaw 65. After being subjected to force, the jaw 65 changes from open to closed until the serrated end face of the clamping plate 66 contacts the end face of the aluminum substrate of the PCB to be processed.

[0046] Finally, the left-right position change of the PCB aluminum substrate to be processed is jointly limited by the clamping plates 66 moving in opposite directions on the left and right sides. Thus, the position of the PCB aluminum substrate to be processed is completely limited, effectively reducing the vibration phenomenon that affects the processing accuracy during drilling, reducing the product defect rate, improving the company's production efficiency and profits, and providing a strong guarantee for the company's market competitiveness.

[0047] It should be noted that the limiting action of the secondary limit mechanism 6 is coordinated with the primary limit mechanism 5. That is, there is no fixed limit on the position of the PCB aluminum substrate to be processed by the primary limit mechanism 5 (when the primary limit mechanism 5 runs for a specified time, the secondary limit mechanism 6 starts to move synchronously, and finally the primary limit mechanism 5 and the secondary limit mechanism 6 complete the limiting action synchronously). Specifically, the linkage between the two can be achieved through the existing position sensing device and PLC control system.

[0048] By using the guide groove 653, collisions that could affect production are avoided between the leftmost or rightmost telescopic column 651 and the worktable 24 after being subjected to force.

[0049] Reference Figure 1 , Figure 4 and Figure 5 It is known that the drilling mechanism 4 includes a vertical plate 41, a T-shaped block 42, a locking block 43, an I-shaped seat 44, a support plate 45, an L-shaped plate 46, a moving block 47, and a drill 48. The vertical plate 41 is symmetrically and slidably installed on the rear side of the upper end face of the worktable 24. The T-shaped blocks 42 are symmetrically installed on the front end face of the vertical section of the vertical plate 41. The locking block 43 is slidably installed between the upper and lower T-shaped blocks 42 through a connecting rod. The I-shaped seat 44 is installed on the front end face of the locking blocks 43 at both ends. The support plate 45 is installed between the middle position of the rear end face of the I-shaped seat 44 and the worktable 24. The L-shaped plate 46 is installed on the front end face of the support plate 45. The moving block 47, which is slidably installed with the support plate 45, is evenly slidably installed from left to right on the lower end of the horizontal section of the L-shaped plate 46. The drill 48 is installed between the moving block 47 and the L-shaped plate 46.

[0050] Reference Figure 7 , Figure 8 and Figure 9It is known that the synchronization mechanism 3 includes a hollow groove 31, a cross plate 32, a reinforcing column 33, a fixing block 34, a trapezoidal platform 35, a turntable 36, an electric telescopic rod 37, and a storage compartment 38. A hollow groove 31 is provided in the middle of the bottom plate 1. Cross plates 32 are evenly and slidably installed in the hollow groove 31 from left to right. A reinforcing column 33 is fixedly installed between adjacent cross plates 32. A fixing block 34 is installed in the middle of the upper end face of the cross plate 32. A trapezoidal platform 35 is slidably installed on the upper end face of the fixing block 34 and the upper end face of the cross plate 32. A turntable 36 is rotatably installed on the upper end face of the trapezoidal platform 35. An electric telescopic rod 37 is installed on the upper end of the turntable 36. A storage compartment 38 is installed on the upper end of the electric telescopic rod 37.

[0051] Reference Figure 8 and Figure 9 It is known that magnets 381 are installed on the inner wall and bottom wall of the storage compartment 38. A base column 382 connected to the storage compartment 38 is installed at the middle of the upper end. A lower suction cup 383 connected to the base column 382 is installed at the upper end. A polishing cylinder 384 connected to the lower suction cup 383 is installed at the upper end. The polishing cylinder 384 is divided into a precision area and a rough area. An upper suction cup 385 connected to the polishing cylinder 384 is installed at the upper end. A cleaning cloth 386 is installed at the position between the upper suction cup 385 and the lower suction cup 383 and the polishing cylinder 384.

[0052] Reference Figure 8 It can be seen that a telescopic sealing ring 3821 is installed on the upper outer wall of the base column 382, ​​and the upper diameter of the telescopic sealing ring 3821 is larger than the lower diameter. At the same time, the upper diameter of the telescopic sealing ring 3821 is larger than the diameter of the polishing cylinder 384.

[0053] Reference Figure 8 It can be seen that the diameter of the lower end face of the upper suction cup 385 is larger than the diameter of the upper end face, and the diameter of the upper end face of the lower suction cup 383 is larger than the diameter of the lower end face. The outer walls of both the upper suction cup 385 and the lower suction cup 383 are provided with dense through holes 3831, and the opposite surfaces of the upper suction cup 385 and the lower suction cup 383 are also provided with through holes 3831 evenly. The through holes 3831 on the outer walls of the upper suction cup 385 and the lower suction cup 383 are designed to be inclined.

[0054] First, the I-shaped base 44, under the action of the clamping block 43, drives the L-shaped plate 46 to move up and down reciprocally. Similarly, the T-shaped block 42, under the action of the upright plate 41, drives the clamping block 43 to move back and forth reciprocally. During this process, the drill 48, under the action of the moving block 47, moves left and right reciprocally. Specifically, the upright plate 41, the clamping block 43, or the moving block 47 can be moved by an electric push block (the three have different power sources). At this time, the drill 48 performs three-axis drilling on the PCB aluminum substrate to be processed directly below it under the three-axis motion composed of the upright plate 41, the clamping block 43, and the moving block 47.

[0055] Next, the trapezoidal platform 35 moves back and forth along the hollow groove 31 under the drive of the cross plate 32. Then, under the combined guiding and supporting action of the cross plate 32 and the fixed block 34, it moves back and forth. Specifically, the cross plate 32 or the trapezoidal platform 35 can be moved by an electric push block (the two have different power sources). At the same time, the electric telescopic rod 37 drives the storage compartment 38 to rotate at high speed under the action of the turntable 36. (While rotating at high speed, the storage compartment 38 can move up and down under the action of the electric telescopic rod 37. That is, at this time, the storage compartment 38 performs a three-axis motion with the same trajectory as the punch 48 under the combined action of the cross plate 32, the trapezoidal platform 35 and the electric telescopic rod 37). Specifically, the turntable 36 can be rotated by a built-in micro motor.

[0056] Finally, under the action of the electric telescopic rod 37, the storage compartment 38 drives the base column 382 to gradually penetrate into the hole (the movement trajectory of the punch 48 and the electric telescopic rod 37 is the same, but they are staggered by one hole position). The high-speed rotating polishing cylinder 384 performs graded polishing on the residual metal debris on the inner wall of the hole, effectively reducing the burrs on the inner wall of the hole. During this process, the upper suction cup 385 and the lower suction cup 383 distributed at the top and bottom simultaneously collect the polished metal residue (the through holes 3831 on the outer wall and end face of the upper suction cup 385 and the lower suction cup 383 maximize the absorption of metal residue. At the same time, the upper end face diameter of the lower suction cup 383 is larger than its lower end face diameter, which on the one hand reduces the metal debris flying out of the hole under high-speed rotation, and on the other hand, works with its end face through holes 3831 to more effectively absorb metal debris). Specifically, it can be connected to the storage compartment 38 via an external air pump.

[0057] The metal debris absorbed into the storage compartment 38 is further adsorbed by magnet 381 to prevent the metal debris from overflowing. Finally, the cleaning ability can be improved by the operator regularly cleaning the storage compartment 38.

[0058] By using the telescopic sealing ring 3821 to seal the lower end of the hole, metal fragments are further prevented from splashing out and polluting the working environment, while reducing the harm of metal dust to the operator's body.

[0059] The cleaning cloth 386 further ensures the cleanliness of the inside of the hole, that is, it removes a small amount of remaining metal debris that was not absorbed by the upper suction cup 385 and the lower suction cup 383, thus safeguarding the quality of subsequent electroplating.

[0060] The working principle of the PCB aluminum substrate drilling equipment provided by the present invention is as follows: First step: The operator first adjusts the adjusting rod 54 according to the width of the PCB aluminum substrate to be processed, so that it controls the positioning block 55 to reach the designated position, thereby realizing the initial guidance and limitation of the position of the positioning plate 272 for PCB aluminum substrates of different widths. Then, the right angle plate 53 drives the T-shaped plate 26 to move backward under the action of the hydraulic rod 52 until the PCB aluminum substrate to be processed contacts the front end face of the baffle 56, thus completing the initial limitation of the position of the PCB aluminum substrate to be processed in the front-back direction.

[0061] Step 2: Next, through the combined action of the lead screw 61 and the guide rod 63, the limiting plate 64 and its claws 65 and clamping plate 66 are driven to move towards the aluminum substrate of the PCB to be processed, until the arc block 652 contacts and presses against the aluminum substrate of the PCB to be processed. After that, the clamping plate 66 changes from an open state to a closed state under the action of the arc block 652, until the sawtooth end face of the clamping plate 66 contacts the end face of the aluminum substrate of the PCB to be processed. At this time, the clamping plate 66 further limits the position of the aluminum substrate of the PCB to be processed in the left and right directions.

[0062] Step 3: Finally, through the storage compartment 38, which moves in the same three-axis motion as the punch 48, the base column 382 is controlled to drive the polishing cylinder 384 on it to gradually penetrate into the hole. Then, the high-speed rotating polishing cylinder 384 performs graded polishing on the inner wall of the hole. At the same time, the upper suction cup 385 and the lower suction cup 383 absorb the metal debris polished by the polishing cylinder 384. Meanwhile, the cleaning cloth 386 further cleans the inner wall of the hole during the process of entering and exiting the hole.

[0063] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0064] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A PCB aluminum substrate drilling device, comprising a base plate (1), characterized in that: The base plate (1) is provided with a positioning mechanism (2) on both the upper and lower end faces. A synchronization mechanism (3) is provided in the middle of the base plate (1). A drilling mechanism (4) is provided above the rear side of the positioning mechanism (2). A first-level limiting mechanism (5) is provided on the positioning mechanism (2) at the front end of the drilling mechanism (4). A second-level limiting mechanism (6) is provided on the positioning mechanism (2) directly above the synchronization mechanism (3). The synchronization mechanism (3) includes a hollow groove (31), a cross plate (32), a reinforcing column (33), a fixing block (34), a trapezoidal platform (35), a turntable (36), an electric telescopic rod (37), and a storage compartment (38). The bottom plate (1) has a hollow groove (31) in the middle. The cross plates (32) are evenly and slidably installed in the hollow groove (31) from left to right. The reinforcing column (33) is fixedly installed between adjacent cross plates (32). The fixing block (34) is slidably installed in the middle of the upper surface of the cross plate (32). The trapezoidal platform (35) is slidably installed on the upper surface of the fixing block (34) and the upper surface of the cross plate (32). The turntable (36) is rotatably installed on the upper surface of the trapezoidal platform (35). The electric telescopic rod (37) is installed on the upper end of the turntable (36). The storage compartment (38) is installed on the upper end of the electric telescopic rod (37). Magnets (381) are installed on the inner and bottom walls of the storage compartment (38). A base column (382) connected to the storage compartment (38) is installed at the middle of the upper end. A lower suction cup (383) connected to the base column (382) is installed at the upper end. A polishing cylinder (384) connected to the lower suction cup (383) is installed at the upper end. The polishing cylinder (384) is divided into a precision area and a rough area. An upper suction cup (385) connected to the polishing cylinder (384) is installed at the upper end. A cleaning cloth (386) is installed at the upper end of the upper suction cup (385) and between the lower suction cup (383) and the polishing cylinder (384). The lower end face diameter of the upper suction cup (385) is larger than the upper end face diameter, and the upper end face diameter of the lower suction cup (383) is larger than the lower end face diameter. The outer walls of the upper suction cup (385) and the lower suction cup (383) are provided with dense through holes (3831), and through holes (3831) are also uniformly provided on the opposite surfaces of the upper suction cup (385) and the lower suction cup (383). The through holes (3831) on the outer walls of the upper suction cup (385) and the lower suction cup (383) are designed to be inclined. The upper outer wall of the base column (382) is equipped with a telescopic sealing ring (3821), and the upper diameter of the telescopic sealing ring (3821) is larger than the lower diameter. At the same time, the upper diameter of the telescopic sealing ring (3821) is larger than the diameter of the polishing cylinder (384).

2. The PCB aluminum substrate drilling equipment according to claim 1, characterized in that: The positioning mechanism (2) includes a right-angle seat (21), a long rail (22), a sliding block (23), a worktable (24), a rectangular groove (25), and a T-shaped plate (26). The bottom surface of the base plate (1) has right-angle seats (21) arranged in a rectangular shape. The upper surface of the base plate (1) is symmetrically equipped with long rails (22). Sliding blocks (23) are slidably installed on the long rails (22). The upper surfaces of the sliding blocks (23) at both ends are equipped with a worktable (24). A rectangular groove (25) is opened in the middle of the worktable (24). A T-shaped plate (26) is movably installed at the front end of the upper surface of the worktable (24).

3. The PCB aluminum substrate drilling equipment according to claim 2, characterized in that: The drilling mechanism (4) includes a vertical plate (41), a T-shaped block (42), a locking block (43), an I-shaped base (44), a support plate (45), an L-shaped plate (46), a moving block (47), and a drill (48). The vertical plate (41) is symmetrically and slidably installed on the rear side of the upper end face of the worktable (24). T-shaped blocks (42) are symmetrically installed on the front end face of the vertical section of the vertical plate (41). A locking block (43) is slidably installed between the upper and lower T-shaped blocks (42) through a connecting rod. The front end face of the card block (43) is jointly equipped with an I-shaped base (44), and the middle position of the rear end face of the I-shaped base (44) is jointly equipped with a support plate (45) between the worktable (24). The front end face of the support plate (45) is equipped with an L-shaped plate (46). The lower end of the horizontal section of the L-shaped plate (46) is uniformly slidably installed with a moving block (47) that is slidably fitted with the support plate (45) from left to right. A punch (48) is jointly installed between the moving block (47) and the L-shaped plate (46).

4. The PCB aluminum substrate drilling equipment according to claim 2, characterized in that: The first-level limiting mechanism (5) includes a fixed seat (51), a hydraulic rod (52), a right-angle plate (53), an adjusting rod (54), a marking block (55), and a baffle (56). The fixed seat (51) is symmetrically installed on the left and right sides of the rear side of the upper end face of the worktable (24). The hydraulic rod (52) is installed on the front end face of the fixed seat (51). The right-angle plate (53) that is snapped into the T-shaped plate (26) is installed on the front end face of the hydraulic rod (52). The adjusting rod (54) is installed on the left side of the right-angle plate (53). The marking block (55) that is threadedly installed on the left side of the T-shaped plate (26) is slidably installed on the left side of the T-shaped plate (26). The baffle (56) is installed on the rear side of the upper end face of the worktable (24).

5. The PCB aluminum substrate drilling equipment according to claim 2, characterized in that: The secondary limiting mechanism (6) includes a lead screw (61), a spiral groove (62), a guide rod (63), a limiting plate (64), a claw (65), and a clamping plate (66). The lead screw (61) is installed on the front end of the lower end face of the worktable (24) through symmetrical ear seats. The outer wall of the lead screw (61) is evenly provided with four sets of spiral grooves (62) from left to right, and the spiral grooves (62) in the same set have opposite rotation directions. The rear end of the lower end face of the worktable (24) is installed with a guide rod (63) through symmetrical ear seats. Eight limiting plates (64) are slidably installed on the outer wall of the guide rod (63) from left to right. Each pair of adjacent limiting plates (64) is a group, with a total of four groups. The limiting plates (64) are simultaneously threadedly installed with the lead screw (61). Each limiting plate (64) is symmetrically installed with claws (65) on the front and back. The side of the claws (65) away from the limiting plates (64) is symmetrically installed with clamping plates (66).

6. The PCB aluminum substrate drilling equipment according to claim 5, characterized in that: The clamping end of the clamping plate (66) has a sawtooth structure. A telescopic column (651) is slidably installed in the middle of the claw (65). An arc-shaped block (652) is installed at one end of the telescopic column (651) near the clamping plate (66). A guide groove (653) that cooperates with the telescopic column (651) is opened on the upper surface of the workbench (24).

7. The PCB aluminum substrate drilling equipment according to claim 2, characterized in that: The T-shaped plate (26) has a movable groove (271) evenly distributed from left to right on one end face near the rectangular groove (25). A positioning plate (272) is slidably installed in the movable groove (271), and a connecting column (273) is installed between adjacent positioning plates (272). A marking ruler (274) is engraved on the upper end face of the left side of the T-shaped plate (26).

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