Dustproof drilling device for processing embedded component circuit board

Abstract

The invention discloses a dustproof drilling device for processing a circuit board with embedded components, relates to the technical field of circuit board processing, and solves the problems that a drilling device for processing a circuit board with embedded components in the prior art has noise pollution and a circuit board fixing mold is not convenient and fast to replace and operate. Comprising a bearing platform and an installation stand column fixedly installed on the bearing platform. The drilling assembly is arranged on the mounting stand column and used for drilling the circuit board; the lifting assembly is connected with the drilling assembly and used for conducting lifting adjustment on the drilling assembly; the dustproof mechanism comprises an auxiliary column fixedly mounted on the bottom surface of the mounting base; the drilling device disclosed by the invention is convenient to disassemble and assemble, and can flexibly adapt to clamping placement requirements of circuit boards of different specifications; and meanwhile, noise generated during drilling of the drill rod and the drill bit is remarkably reduced, so that the environmental protection performance is improved to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board processing, and in particular relates to a drilling device for processing circuit boards capable of embedding dust-proof components. Background Art

[0002] Embedded component circuit boards (ECPs), an innovative packaging technology, demonstrate significant advantages. Through a multi-layered circuit board structure, active and passive components (such as resistors, capacitors, inductors, and chips) are embedded directly within the circuit board, integrating components with the circuit layer. This improves circuit performance, reduces size, and optimizes functional density.

[0003] Currently, in the assembly process of embedded component circuit boards, pre-assembly equipment preparation is crucial. Typically, holes need to be drilled in the four corners of the circuit board to facilitate subsequent assembly. However, existing embedded component circuit board drilling equipment has some shortcomings.

[0004] On the one hand, such devices are only equipped with negative pressure dust suction devices, which can only absorb dust generated during drilling, but cannot effectively deal with the noise problem generated by the drill rod during drilling.

[0005] On the other hand, due to the diverse specifications of circuit boards with embedded components, the traditional method of replacing the entire fixed mold to adapt to circuit boards of different specifications is not only cumbersome but also inefficient.

[0006] In summary, the drilling device for processing circuit boards with embedded components in the prior art has problems such as noise pollution and inconvenient replacement and operation of the circuit board fixing mold. Summary of the Invention

[0007] The present invention provides a drilling device for processing circuit boards with embedded components that is dust-proof, which can solve the problems of noise pollution and inconvenient replacement and operation of circuit board fixing molds in drilling devices for processing circuit boards with embedded components in the prior art.

[0008] To achieve the above-mentioned object, according to an embodiment of the first aspect of the present invention, a drilling device for processing a circuit board with dust-proof embedded components is provided, comprising a base and a mounting column fixedly mounted on the base; A drilling assembly, provided on the mounting column, for drilling holes in the circuit board; A lifting assembly connected to the drilling assembly, used to lift and lower the drilling assembly; The device further comprises: a dustproof mechanism, the dustproof mechanism comprising an auxiliary column fixedly mounted on one side of the bottom surface of the mounting base, a protective cover fixedly sleeved on the auxiliary column, and a rubber strip arranged on the bottom surface of the protective cover, wherein the rubber strip is filled with a sound-absorbing material; A positioning and fixing mechanism is arranged on the supporting platform, and the positioning and fixing mechanism includes a processing turntable rotatably arranged on the surface of the supporting platform. The surface of the processing turntable is provided with a placement groove, and a circuit board mold is arranged in the placement groove. The outside of the circuit board mold is covered with a circle of adsorption magnetic plate, and the inner wall of the placement groove is fixedly installed with a circle of adsorption magnetic sheet. The adsorption magnetic sheet and the adsorption magnetic plate are directly contacted and adsorbed by magnetism to fix the circuit board mold.

[0009] A further improvement is that the lifting assembly includes a pair of auxiliary mounting rings fixedly sleeved on the sliding sleeve, a lifting rack fixedly connected between the pair of auxiliary mounting rings, a driving seat fixedly mounted on the back side of the platform, a DC servo motor fixedly mounted in the port of the driving seat, and a power gear fixedly connected to the main shaft end of the DC servo motor and meshing with the lifting rack.

[0010] A further improvement is that the drilling assembly includes a sliding sleeve movably mounted on the mounting column, a mounting base fixedly mounted on the top surface of the sliding sleeve, a drill rod penetrating one side of the mounting base, a drill bit fixedly mounted on the bottom of the drill rod and movably passing through the auxiliary column, a pulley rotatably set on the mounting base and connected to the top surface of the drill rod, a stepper motor fixedly mounted on one side of the outside of the mounting base, and a driving pulley fixedly mounted on the output spindle of the stepper motor and connected by a belt and a pulley.

[0011] A further improvement is that the dust-proof mechanism also includes a negative pressure suction device, which includes a negative pressure box fixedly connected to the side of the platform and a negative pressure suction pipe fixedly connected to the side of the bellows section and connected to the negative pressure box. The negative pressure box is provided with a connected negative pressure area and a barrier area, a negative pressure suction pump is fixedly connected to the negative pressure area, an air filter element is provided in the barrier area, an access port connected to the barrier area is provided on the negative pressure box, the end of the negative pressure suction pipe is connected to the access port, and the discharge outlet of the negative pressure suction pump is located outside the negative pressure box.

[0012] A further improvement is that the protective cover is divided into a plastic pipe section and a corrugated pipe section, the corrugated pipe section is sleeved on the outside of the plastic pipe section, a circle of rubber strips is fixedly installed at the edge of the bottom surface of the corrugated pipe section of the protective cover, and a pressing piece is provided inside the plastic pipe section of the protective cover for pressing the circuit board in the placement groove, the pressing piece includes an auxiliary frame rotatably arranged in the plastic pipe section through a bearing and a circle of corrugated elastic silicone strips fixedly installed on the bottom surface of the auxiliary frame.

[0013] A further improvement is that a steering groove is provided on the surface of the supporting platform, and the processing turntable is arranged in the steering groove by rotating the rotating shaft. A large gear is fixedly sleeved on the outer lower end of the processing turntable, and a stepper motor 2 is fixedly installed in the supporting platform, and a small gear meshing with the large gear is fixedly installed on the main shaft of the stepper motor 2.

[0014] A further improvement is that a circle of raised frame is provided inside the circuit board mold, and a circle of shock-absorbing rubber strips that fit the inner wall of the circuit board mold is fixedly installed on the surface of the raised frame. Fixed knobs are rotatably provided at the four corners of the surface notch of the placement groove, and notches are opened at the four corners of the surface of the circuit board mold to engage with the fixed knobs.

[0015] A further improvement is that it also includes a lifting mechanism, which includes a lifting support plate arranged in the placement groove and below the raised frame, a lifting column vertically fixedly installed on the bottom surface of the lifting support plate, and a U-shaped groove member fixedly installed on the side of the mounting column and symmetrical with the lifting rack. An inner cavity is provided in the base, and a limiting cylinder is vertically fixedly installed on the inner wall of the top surface of the inner cavity. A linkage groove is vertically opened on the side of the base, and a lever is provided in the linkage groove, the other end of the lever extends into the port of the U-shaped groove member, and the other end of the lever extends into the inner cavity and is rotatably connected to the inner wall of the side away from the linkage groove through a rotating shaft and the inner cavity. The lifting column passes through the limiting cylinder, and the bottom end is rotatably connected to the surface of the lever through a rotating shaft. A return compression spring is fixedly installed on the inner wall of the top surface of the linkage groove, and the bottom surface of the return compression spring is fixedly connected to the surface of the lever.

[0016] A further improvement is that the inner walls of the top and bottom surfaces of the U-shaped groove are respectively recessed inward, and after the U-shaped groove is raised as the sliding sleeve is adjusted, its bottom surface and the lever are mutually limited and engaged, an elastic touch switch is fixedly installed on the inner wall of the top surface of the U-shaped groove, and a microprocessor is fixedly installed on the outside, the elastic touch switch, the DC servo motor and the microprocessor are connected, and the microprocessor is used to receive the trigger signal of the elastic touch switch and control the action of the DC servo motor according to the signal.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention inserts the circuit board mold into the placement slot so that the adsorption magnetic sheet on the inner wall of the placement slot comes into direct contact with the adsorption magnetic plate on the circuit board mold. The circuit board mold is initially fixed by virtue of the magnetic adsorption effect. After the initial fixation is completed, the staff rotates the fixing knobs at the four corners of the placement slot. As the fixing knobs are rotated, their sides are precisely inserted into the corresponding notches at the four corners of the surface of the circuit board mold, further stabilizing the circuit board mold. This fixing method not only ensures the firmness of the installation of the circuit board mold, but also realizes convenient disassembly and assembly, and can flexibly adapt to the positioning requirements of circuit boards of different specifications.

[0018] (2) The present invention places the circuit board to be processed on the raised frame of the port of the circuit board mold to ensure that the bottom edge of the circuit board is in close contact with the shock-absorbing rubber strip on the surface of the raised frame. Then, the DC servo motor is started to drive the lifting rack and the drilling assembly to move downward as a whole through the power gear. During this process, the rubber strip on the bottom of the protective cover will first fit on the surface of the base. At the same time, the corrugated elastic silicone strip in the internal pressing part will apply pressure to the edge of the circuit board surface to prevent it from tilting or shaking up and down due to vibration during the drilling process. When the drilling assembly is in place, since the protective cover adopts a design that combines a plastic pipe section and a corrugated pipe section, the sliding sleeve continues to drive the drilling structure to descend and start drilling the corner end of the circuit board. During the drilling process, the negative pressure suction device plays an important role. The negative pressure suction pump inside it generates negative pressure, which on the one hand quickly sucks in the dust generated by drilling to prevent the dust from splashing; on the other hand, it takes away the heat generated by the drill bit during drilling, effectively preventing overheating caused by friction, thereby improving the drilling quality.

[0019] (3) The present invention compresses the bellows section of the protective cover and the corrugated elastic silicone strip through the design of the bellows section in the protective cover, thereby making the rubber strip more closely attached to the surface of the base. This design not only effectively prevents the splashing of dust generated during drilling, but also the sound-absorbing material filled inside the rubber strip can absorb the noise generated during drilling. The combined effect of the protective cover itself, the shock-absorbing rubber strip and the corrugated elastic silicone strip significantly reduces the noise generated by the drill rod and the drill bit during drilling, thereby improving the environmental performance to a certain extent. In addition, a U-shaped groove is designed on the side of the sliding sleeve, and an elastic touch switch is installed on the inner wall of the top surface of the U-shaped groove. In actual operation, when the drill bit completely drills through the circuit board, one end of the lever will come into contact with the elastic touch switch. At this time, the elastic touch switch is triggered and generates a signal. After receiving the trigger signal, the microprocessor will accurately control the action of the DC servo motor according to the signal content. Through this design, it can effectively prevent damage to other components due to misoperation, and enhance the safety of the device during use.

[0020] (4) The present invention starts the second stepper motor in the device according to a preset program after a drilling operation is completed. The motor drives the small gear to rotate, which in turn drives the large gear meshing with it to rotate, and finally causes the entire processing turntable to rotate. During the rotation process, the circuit board inside the processing turntable will be adjusted to its position, and its next corner end to be drilled will be accurately rotated to the working area of ​​the drill bit. Since the pressing piece is rotatably arranged in the protective cover, when the processing turntable rotates, the pressing piece can keep synchronous rotation with the circuit board and continuously apply stable pressure to the circuit board. In this way, subsequent drilling operations do not require repeated loosening and pressing of the circuit board, and the entire drilling process is simplified, making the operation more convenient and efficient.

[0021] (5) The present invention restarts the DC servo motor after completing the drilling operation of the required holes at each corner of the circuit board. At this time, the sliding sleeve rises, driving the U-shaped groove part to rise synchronously. As the U-shaped groove part rises, its internal bottom surface contacts the lever and realizes the limit engagement. According to the lever principle, the lever pushes the lifting column upward after being subjected to force. In this process, the lever will compress the reset spring. After being compressed, the reset spring generates a reaction force, which can effectively reduce the pressure during the rising process and ensure that the lifting action is smooth. Under the smooth lifting action, the ejection plate smoothly ejects the circuit board. In this way, the on-site operator can more conveniently remove the material after the drilling operation is completed, thereby smoothly completing the entire drilling operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the entire device of the present invention when it is working; Figure 2 This is a schematic diagram of the structure of the entire device of the present invention from a rear view (after removing the dust cover); Figure 3 This is a rear view of the entire device of the present invention (a schematic diagram of the structure after removing the dust cover and positioning and fixing mechanism; Figure 4 It is a schematic structural diagram of the ejecting mechanism and the supporting platform of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the entire device of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the positioning and fixing mechanism and the protective cover on the surface of the platform of the present invention; Figure 7 This invention Figure 6 A in the middle is an enlarged structural diagram; Figure 8 It is a schematic diagram of the structure of the dustproof mechanism, the support platform and the drilling assembly of the present invention; Figure 9 It is a schematic diagram of the cross-sectional structure of the negative pressure box of the present invention.

[0023] Markings in the figure: 1. Base; 11. Mounting column; 101. Steering groove; 102. Inner cavity; 103. Pinion; 104. Linkage groove; 105. Gear; 2. Drilling assembly; 21. Sliding sleeve; 22. Driving wheel; 23. Pulley; 24. Mounting base; 25. Drill rod; 251. Drill bit; 3. Dust-proof mechanism; 31. Protective cover; 311. Plastic pipe section; 312. Bellows section; 313. Rubber strip; 32. Negative pressure suction device; 321. Negative pressure box; 322. Negative pressure suction pipe; 323. Negative pressure suction pump; 324. Air filter element; 301. Auxiliary column; 4. Lifting assembly; 41. Auxiliary mounting ring; 42. Lifting rack; 43. Drive seat; 44. Power gear; 5. Positioning and fixing mechanism; 51. Processing turntable; 52. Circuit board mold; 521. Raising frame; 522. Shock-absorbing rubber strip; 53. Pressing piece; 54. Fixing knob; 55. Notch; 531. Auxiliary frame; 532. Corrugated elastic silicone strip; 501. Placement slot; 502. Adsorption magnetic sheet; 503. Adsorption magnetic plate; 6. Ejecting mechanism; 61. Ejecting support plate; 62. Elevating column; 63. U-shaped groove; 64. Lever; 65. Limiting cylinder; 66. Reset compression spring; 67. Elastic touch switch; 68. Microprocessor. DETAILED DESCRIPTION

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 9 As shown, a drilling device for processing circuit boards with dust-proof embedded components includes a base 1 and a mounting column 11 fixedly mounted on the base 1; A drilling assembly 2, provided on the mounting column 11, for drilling holes in the circuit board; Specifically, the drilling assembly 2 includes a sliding sleeve 21 movably sleeved on the mounting column 11, a mounting base 24 fixedly mounted on the top surface of the sliding sleeve 21, a drill rod 25 penetrating one side of the mounting base 24, a drill bit 251 fixedly mounted on the bottom of the drill rod 25, a pulley 23 rotatably mounted on the mounting base 24 and connected to the top surface of the drill rod 25, a stepper motor fixedly mounted on the outside of the mounting base 24, and a driving pulley 22 fixedly mounted on the output spindle of the stepper motor and connected to the pulley 23 via a belt; The lifting assembly 4 is connected to the drilling assembly 2 and is used to adjust the height of the drilling assembly 2. The lifting assembly 4 includes a pair of auxiliary mounting rings 41 fixedly sleeved on the sliding sleeve 21, a lifting rack 42 fixedly connected between the pair of auxiliary mounting rings 41, a driving seat 43 fixedly mounted on the back side of the base 1, a DC servo motor fixedly mounted in the port of the driving seat 43, and a power gear 44 fixedly connected to the main shaft end of the DC servo motor and meshing with the lifting rack 42; It should be noted that a notch is provided on the side of the driving seat 43 at the position of the power gear 44 for mounting the power gear 44 ; The dustproof mechanism 3 includes an auxiliary column 301 fixedly mounted on the bottom surface of the mounting base 24 and sleeved on the outside of the drill rod 25, and a protective cover 31 fixedly sleeved on the auxiliary column 301. The protective cover 31 is divided into a plastic pipe section 311 and a bellows section 312. The bellows section 312 is sleeved on the outside of the plastic pipe section 311. A circle of rubber strips 313 are fixedly mounted on the edge of the bottom surface of the bellows section 312 of the protective cover 31. The rubber strips 313 are filled with sound-absorbing material. As drilling progresses, driven by the lifting assembly 4, the design of the bellows section 312 of the protective cover 31 causes the bellows section 312 of the protective cover 31 to be compressed, thereby making the rubber strips 313 more closely attached to the surface of the base 1. This design not only effectively prevents dust chips from splashing during drilling, but also the sound-absorbing material filled inside the rubber strips 313 can absorb the noise generated during drilling, significantly reducing the noise generated by the drill rod 25 and the drill bit 251 during drilling, thereby improving environmental protection performance to a certain extent. Specifically, the dust-proof mechanism 3 also includes a negative pressure suction device 32, which includes a negative pressure box 321 fixedly connected to the side of the base 1 and a negative pressure suction pipe 322 fixedly connected to the side of the bellows section 312 and connected to the negative pressure box 321. The negative pressure box 321 is provided with a connected negative pressure area and a barrier area, a negative pressure suction pump 323 is fixedly connected to the negative pressure area, an air filter element 324 is provided in the barrier area, and an access port connected to the barrier area is provided on the negative pressure box 321. The end of the negative pressure suction pipe 322 is connected to the access port, and the discharge port of the negative pressure suction pump 323 is located outside the negative pressure box 321. During the drilling process of the circuit board, the negative pressure suction device 32 plays an important role. The negative pressure suction pump 323 inside it generates negative pressure, which, on the one hand, quickly absorbs the dust generated by drilling to prevent the dust from splashing; on the other hand, it takes away the heat generated by the drill bit 251 during drilling, effectively preventing overheating caused by friction, thereby improving the drilling quality; A positioning and fixing mechanism 5 is provided on the support platform 1. The positioning and fixing mechanism 5 includes a processing turntable 51 rotatably provided on the surface of the support platform 1 via a bearing. A placement groove 501 is provided on the surface of the processing turntable 51. A circuit board mold 52 is provided in the placement groove 501. A circle of adsorption magnetic plates 503 are sleeved on the outside of the circuit board mold 52. A circle of adsorption magnetic sheets 502 are fixedly installed on the inner wall of the placement groove 501. The adsorption magnetic sheets 502 and the adsorption magnetic plates 503 are directly adsorbed by magnetic contact to preliminarily fix the circuit board mold 52. As a preferred embodiment, fixed knobs 54 are rotatably installed at the four corners of the notch on the surface of the placement slot 501. Notches 55 are provided at the four corners of the surface of the circuit board mold 52 to engage with the fixed knobs 54. After completing the initial fixation, the staff rotates the fixed knobs 54 at the four corners of the notch of the placement slot 501. As the fixed knobs 54 are rotated, their sides will precisely snap into the corresponding notches 55 at the four corners of the surface of the circuit board mold 52, further stabilizing the circuit board mold 52. This fixing method not only ensures the secure installation of the circuit board mold 52, but also enables convenient assembly and disassembly, and can flexibly adapt to the positioning requirements of circuit boards of different specifications. As a preferred embodiment, a circle of raised frame 521 is provided inside the circuit board mold 52. A circle of shock-absorbing rubber strips 522 that fit the inner wall of the circuit board mold 52 are fixedly mounted on the surface of the raised frame 521. The shock-absorbing rubber strips 522 and the corrugated elastic silicone strips 532 work together to reduce the impact force and vibration generated between the drill bit 251 and the circuit board, thereby improving the accuracy and quality of drilling and preventing damage to the drilling equipment and operators. As a preferred embodiment, a pressing piece 53 is provided inside the plastic tube section 311 of the protective cover 31 for pressing the circuit board in the placement groove 501; The pressure piece 53 includes an auxiliary frame 531 rotatably mounted within the plastic tube section 311 via a bearing, and a ring of corrugated elastic silicone strips 532 fixedly mounted on the bottom surface of the auxiliary frame 531. The corrugated elastic silicone strips 532 apply pressure to the edge of the circuit board to prevent it from tilting or shaking up and down due to vibration during the drilling process. During drilling, the protective cover 31, the shock-absorbing rubber strips 522, and the corrugated elastic silicone strips 532 work together to significantly reduce the noise generated by the drill rod 25 and the drill bit 251 during drilling, thereby improving environmental performance to a certain extent. After a drilling operation is completed, a steering groove 101 is provided on the surface of the support 1, and the processing turntable 51 is arranged in the steering groove 101 by rotating the shaft. A large gear 105 is fixedly sleeved on the outer lower end of the processing turntable 51, and a stepper motor 2 is fixedly installed in the support 1. The main shaft of the stepper motor 2 is fixedly installed with a small gear 103 that is meshed with the large gear 105. By driving the small gear 103 to rotate by the stepper motor 2, the large gear 105 that is meshed with it is driven to rotate, and finally the entire processing turntable 51 is rotated. During the rotation process, the circuit board inside the processing turntable 51 will be adjusted in position, and the next corner end to be drilled will be accurately rotated to the working area of ​​the drill bit 251. Since the pressing piece 53 is rotatably arranged in the protective cover 31, when the processing turntable 51 rotates, the pressing piece 53 can keep rotating synchronously with the circuit board and continuously apply stable pressure to the circuit board. In this way, the subsequent drilling operation does not need to repeatedly release and press the circuit board, and the entire drilling process is simplified, and the operation is more convenient and efficient. It should be noted that the speed and rotation time of the stepper motor 2 are pre-set before implementation. The principle is based on the following: by adjusting the frequency of the pulse signal received by the driver (such as PLC, single-chip microcomputer, etc.), the speed of the stepper motor 2 can be accurately controlled. The length of time that the stepper motor 2 receives the pulse signal can be set by programming, thereby controlling its rotation time. For example, in an automated production line, the stepper motor 2 can be set to rotate for 10 seconds after receiving the start signal and then stop. It can be set according to the actual needs on site to ensure that after rotation, each corner end of the circuit board is in the working position of the drill rod 25. This part is a prior art and will not be explained in detail in this embodiment. The processing turntable 51 is used to support and rotate the circuit board mold 52. During the rotation of the processing turntable 51, the suction port of the negative pressure suction pipe 322 always remains aligned with one corner of the circuit board mold 52, thereby ensuring that dust generated during the drilling of the circuit board can be stably absorbed during the processing. like Figures 2 to 5 As shown, this embodiment also provides an implementation scheme, which is as follows: On the basis of the above embodiment, it also includes a lifting mechanism 6, which includes a lifting support plate 61 arranged in the placement groove 501 and below the padding frame 521, a lifting column 62 vertically fixedly installed on the bottom surface of the lifting support plate 61, and a U-shaped groove member 63 fixedly installed on the side of the installation column 11 and symmetrical with the lifting rack 42. An inner cavity 102 is provided in the support platform 1, and a limiting cylinder 65 is vertically fixedly installed on the inner wall of the top surface of the inner cavity 102. A linkage groove 104 is vertically opened on the side of the support platform 1. A lever 64 is provided in the linkage groove 104, the other end of the lever 64 extends into the end of the U-shaped groove 63, and the other end of the lever 64 extends into the inner cavity 102 and is rotatably connected to the inner wall of the inner cavity 102 on the side away from the linkage groove 104 through the rotating shaft. The lifting column 62 passes through the limiting cylinder 65, and the bottom end is rotatably connected to the surface of the lever 64 through the rotating shaft. A return compression spring 66 is fixedly installed on the inner wall of the top surface of the linkage groove 104, and the bottom surface of the return compression spring 66 is fixedly connected to the surface of the lever 64; As a preferred embodiment, the top and bottom inner walls of the U-shaped groove 63 are respectively recessed inward. After the U-shaped groove 63 is raised by the adjustment of the sliding sleeve 21, its bottom surface and the lever 64 are mutually limited and engaged, allowing the ejection support plate 61 to more smoothly eject the circuit board, making it easier to remove the material after the drilling operation is completed. As a preferred embodiment, a resilient touch switch 67 is fixedly mounted on the inner wall of the top surface of the U-shaped groove 63, and a microprocessor 68 is fixedly mounted on the outside. The resilient touch switch 67, the DC servo motor, and the microprocessor 68 are connected. The microprocessor 68 is configured to receive a trigger signal from the resilient touch switch 67 and control the operation of the DC servo motor based on this signal. In actual operation, when the drill bit 251 completely penetrates the circuit board, one end of the lever 64 comes into contact with the resilient touch switch 67. At this point, the resilient touch switch 67 is triggered and generates a signal. Upon receiving this trigger signal, the microprocessor 68 precisely controls the operation of the DC servo motor based on the signal content. This design effectively prevents damage to other components due to misoperation, enhancing the safety of the device during use.

[0026] like Figures 1 to 9 As shown in this embodiment, it should be noted that the actual dimensions of the components in the application document will be selected and installed according to actual on-site requirements before implementation. In addition, it should be noted that this application document only addresses the shortcomings of the drilling device for processing circuit boards with embedded components in the prior art, such as noise pollution and the inconvenient replacement and operation of the circuit board fixing mold. It does not involve improvements in circuit principles. The working principle of this drilling device for processing circuit boards with embedded components that can be dust-proof is described below: When the solution of the present invention is actually used on site, first, the on-site staff needs to select an appropriate circuit board mold 52 based on the specifications of the circuit board to be processed. After selecting the mold, it is inserted into the placement slot 501. At this time, the adsorption magnetic sheet 502 on the inner wall of the placement slot 501 will be in direct contact with the adsorption magnetic plate 503 on the circuit board mold 52, and the circuit board mold 52 will be initially fixed by virtue of the magnetic adsorption effect. After completing the initial fixation, the staff will respectively turn the fixing knobs 54 at the four corners of the notch of the placement slot 501. As the fixing knob 54 is turned, its side will be precisely inserted into the corresponding notches 55 at the four corners of the surface of the circuit board mold 52, further stabilizing the circuit board mold 52. This fixing method not only ensures the firmness of the installation of the circuit board mold 52, but also realizes convenient disassembly and assembly, and can flexibly adapt to the positioning requirements of circuit boards of different specifications.

[0027] Afterwards, the staff will place the circuit board to be processed on the raised frame 521 at the port of the circuit board mold 52, ensuring that the bottom edge of the circuit board is in close contact with the shock-absorbing rubber strip 522 on the surface of the raised frame 521. Next, the DC servo motor is started to drive the lifting rack 42 and the drilling assembly 2 to move downward as a whole through the power gear 44. During this process, the rubber strip 313 on the bottom of the protective cover 31 will first fit onto the surface of the base 1. At the same time, the corrugated elastic silicone strip 532 in the internal pressure piece 53 will apply pressure to the edge of the circuit board surface to prevent it from shifting up and down due to vibration during the drilling process. When the drilling assembly 2 is in place, since the protective cover 31 adopts a design that combines the plastic pipe section 311 and the corrugated pipe section 312, when the sliding sleeve 21 continues to drive the drilling structure to descend, the drilling operation on the corner end of the circuit board begins. During the drilling process, the negative pressure suction device 32 plays an important role. The negative pressure suction pump 323 inside it generates negative pressure, which on the one hand quickly sucks in the dust generated by drilling to prevent the dust from splashing; on the other hand, it takes away the heat generated by the drill bit 251 during drilling, effectively preventing overheating caused by friction, thereby improving the drilling quality.

[0028] As drilling progresses, the bellows section 312 of the protective cover 31 and the corrugated elastic silicone strip 532 are compressed due to the continuous lowering of the drilling structure and the design of the bellows section 312, thereby making the rubber strip 313 more closely adhere to the surface of the base 1. This design not only effectively prevents dust from flying during drilling, but also the sound-absorbing material filled inside the rubber strip 313 absorbs the noise generated during drilling. The combined effect of the protective cover 31, the shock-absorbing rubber strip 522, and the corrugated elastic silicone strip 532 significantly reduces the noise generated by the drill rod 25 and drill bit 251 during drilling, thereby improving environmental performance to a certain extent. In addition, a U-shaped groove 63 is designed on the side of the sliding sleeve 21, and an elastic touch switch 67 is installed on the inner wall of the top surface of the U-shaped groove 63. In actual operation, when the drill bit 251 completely penetrates the circuit board, one end of the lever 64 will contact the elastic touch switch 67. At this time, the elastic touch switch 67 is triggered and generates a signal. After receiving the trigger signal, the microprocessor 68 will accurately control the operation of the DC servo motor according to the signal content. Through this design, it can effectively prevent damage to other components due to misoperation, and enhance the safety of the device during use.

[0029] After a drilling operation is completed, the device will start stepper motor 2 according to the preset program. The motor drives the small gear 103 to rotate, which in turn drives the large gear 105 meshing with it to rotate, and finally causes the entire processing turntable 51 to rotate. During the rotation process, the circuit board inside the processing turntable 51 will be adjusted in position, and its next corner end to be drilled will be accurately rotated to the working area of ​​the drill bit 251. Since the pressure piece 53 is rotatably arranged in the protective cover 31, when the processing turntable 51 rotates, the pressure piece 53 can keep synchronous rotation with the circuit board and continue to apply stable pressure to the circuit board. In this way, subsequent drilling operations do not require repeated loosening and pressing of the circuit board, and the entire drilling process is simplified, making the operation more convenient and efficient.

[0030] After completing the drilling operation of the required holes at each corner of the circuit board, start the DC servo motor again. At this time, the sliding sleeve 21 rises, driving the U-shaped groove part 63 to rise synchronously. As the U-shaped groove part 63 rises, its internal bottom surface contacts the lever 64 and realizes the limit engagement. According to the lever principle, the lever 64 pushes the lifting column 62 upward after being subjected to force. In this process, the lever 64 will compress the reset spring 66. The reset spring 66 generates a reaction force after being compressed, which can effectively reduce the pressure during the rising process and ensure that the lifting action is smooth. Under the smooth lifting action, the ejection support plate 61 smoothly ejects the circuit board. In this way, the on-site operator can more conveniently take out the material after the drilling operation is completed, and thus smoothly complete the entire drilling operation process.

[0031] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A drilling device for processing circuit boards with dust-proof embedded components, comprising a support (1) and a mounting column (11) fixedly mounted on the support (1); A drilling assembly (2), arranged on the mounting column (11), for drilling holes in the circuit board; A lifting assembly (4) connected to the drilling assembly (2) and used for lifting and lowering the drilling assembly (2); It is characterized by: Also includes: A dustproof mechanism (3), the dustproof mechanism (3) comprising an auxiliary column (301) fixedly mounted on one side of the bottom surface of the mounting base (24), a protective cover (31) fixedly sleeved on the auxiliary column (301), and a rubber strip (313) arranged on the bottom surface of the protective cover (31), wherein the rubber strip (313) is filled with a sound-absorbing material; A positioning and fixing mechanism (5) is arranged on the support platform (1), and the positioning and fixing mechanism (5) includes a processing turntable (51) rotatably arranged on the surface of the support platform (1), a placement groove (501) is opened on the surface of the processing turntable (51), a circuit board mold (52) is arranged in the placement groove (501), a circle of adsorption magnetic plates (503) are sleeved on the outside of the circuit board mold (52), and a circle of adsorption magnetic sheets (502) are fixedly installed on the inner wall of the placement groove (501), and the adsorption magnetic sheets (502) and the adsorption magnetic plates (503) are directly contacted and adsorbed by magnetism to fix the circuit board mold (52).

2. A drilling device for processing circuit boards capable of dustproof embedded components according to claim 1, characterized in that: The lifting assembly (4) comprises a pair of auxiliary mounting rings (41) fixedly sleeved on the sliding sleeve (21), a lifting rack (42) fixedly connected between the pair of auxiliary mounting rings (41), a driving seat (43) fixedly mounted on the back side of the support platform (1), a DC servo motor fixedly mounted in a port of the driving seat (43), and a power gear (44) fixedly connected to the main shaft end of the DC servo motor and meshingly connected with the lifting rack (42).

3. The drilling device for processing circuit boards capable of dustproof embedded components according to claim 1, characterized in that: The drilling assembly (2) comprises a sliding sleeve (21) movably sleeved on the mounting column (11), a mounting base (24) fixedly mounted on the top surface of the sliding sleeve (21), a drill rod (25) penetrating one side of the mounting base (24), a drill bit (251) fixedly mounted on the bottom of the drill rod (25) and movably passing through the auxiliary column (301), a pulley (23) rotatably mounted on the mounting base (24) and connected to the top surface of the drill rod (25), a stepper motor fixedly mounted on the outside of the mounting base (24), and a driving wheel (22) fixedly mounted on the output spindle of the stepper motor and connected via a belt and the pulley (23).

4. The drilling device for processing circuit boards capable of dustproof embedded components according to claim 1, characterized in that: The dustproof mechanism (3) further comprises a negative pressure suction device (32), the negative pressure suction device (32) comprising a negative pressure box (321) fixedly connected to the side of the support platform (1) and a negative pressure suction pipe (322) fixedly connected to the side of the bellows section (312) and connected to the negative pressure box (321), wherein a negative pressure area and a barrier area are provided in the negative pressure box (321), a negative pressure suction pump (323) is fixedly connected to the negative pressure area, and an air filter element (324) is provided in the barrier area, an access port in communication with the barrier area is provided on the negative pressure box (321), an end of the negative pressure suction pipe (322) is connected to the access port, and an outlet of the negative pressure suction pump (323) is located outside the negative pressure box (321).

5. The drilling device for processing circuit boards capable of dustproof embedded components according to claim 4, characterized in that: The protective cover (31) is divided into a plastic tube section (311) and a corrugated tube section (312). The corrugated tube section (312) is sleeved on the outside of the plastic tube section (311). A circle of rubber strips (313) is fixedly installed at the edge of the bottom surface of the corrugated tube section (312) of the protective cover (31). A pressing piece (53) is provided inside the plastic tube section (311) of the protective cover (31) for pressing the circuit board in the placement groove (501). The pressing piece (53) includes an auxiliary frame (531) rotatably arranged in the plastic tube section (312) through a bearing and a circle of corrugated elastic silicone strips (532) fixedly installed on the bottom surface of the auxiliary frame (531).

6. The drilling device for processing circuit boards capable of embedding components in a dust-proof manner according to claim 1, characterized in that: A steering groove (101) is provided on the surface of the support (1), and the processing turntable (51) is rotatably arranged in the steering groove (101) via a rotating shaft. A large gear (105) is fixedly sleeved on the outer lower end of the processing turntable (51), and a second stepper motor is fixedly installed in the support (1), and a small gear (103) meshing with the large gear (105) is fixedly installed on the main shaft of the second stepper motor.

7. The drilling device for processing circuit boards capable of embedding components in a dust-proof manner according to claim 1, characterized in that: A circle of raised frame (521) is provided in the circuit board mold (52), and a circle of shock-absorbing rubber strips (522) that fit the inner wall of the circuit board mold (52) are fixedly installed on the surface of the raised frame (521). Fixed knobs (54) are rotatably provided at the four corners of the surface notch of the placement slot (501), and notches (55) that cooperate with the fixed knobs (54) are opened at the four corners of the surface of the circuit board mold (52) to engage with the fixed knobs (54).

8. The drilling device for processing circuit boards capable of embedding components in a dust-proof manner according to claim 7, characterized in that: The invention also includes a material ejection mechanism (6), which includes a material ejection support plate (61) arranged in a placement groove (501) and below a raised frame (521), a lifting column (62) vertically fixedly mounted on the bottom surface of the material ejection support plate (61), and a U-shaped groove member (63) fixedly mounted on the side of the mounting column (11) and symmetrical with the lifting rack (42). The support platform (1) is provided with an inner cavity (102), and a limiting cylinder (65) is vertically fixedly mounted on the inner wall of the top surface of the inner cavity (102). A linkage groove (104) is vertically opened on the side of the support platform (1), and the linkage groove ( A lever (64) is provided in the linkage groove (104), the other end of the lever (64) extends into the port of the U-shaped groove (63), the other end of the lever (64) extends into the inner cavity (102), and is rotatably connected to the inner wall of the inner cavity (102) on the side away from the linkage groove (104) through the rotating shaft, the lifting column (62) passes through the limiting cylinder (65), and the bottom end is rotatably connected to the surface of the lever (64) through the rotating shaft, and a reset spring (66) is fixedly installed on the inner wall of the top surface of the linkage groove (104), and the bottom surface of the reset spring (66) is fixedly connected to the surface of the lever (64).

9. The drilling device for processing circuit boards capable of dustproof embedded components according to claim 8, characterized in that: The top surface and bottom inner walls of the U-shaped groove member (63) are respectively recessed inwards. After the U-shaped groove member (63) is raised as the sliding sleeve (21) is adjusted, its bottom surface and the lever (64) are mutually limited and engaged. An elastic touch switch (67) is fixedly mounted on the top inner wall of the U-shaped groove member (63), and a microprocessor (68) is fixedly mounted on the outside. The elastic touch switch (67), the DC servo motor and the microprocessor (68) are connected. The microprocessor (68) is used to receive a trigger signal from the elastic touch switch (67) and control the action of the DC servo motor according to the signal.

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