CN118434013A - A self-cleaning drilling device for PCB board processing - Google Patents

Abstract

The invention discloses a self-cleaning drilling device for PCB processing, which relates to the technical field of PCB drilling devices and comprises a machine table, wherein a clamping assembly is arranged in the middle of the bottom surface of the machine table; the clamping assembly is used for clamping and fixing the PCB; the clamping assembly comprises a trapezoid main hole, the trapezoid main hole is formed in the middle of the lower surface of the machine, and the middle of the lower surface of the machine is fixedly connected with a main header with a box door; according to the invention, through the arranged air blower, the branch pipes, the ventilation grooves and the air delivery holes, the air blower is firstly controlled to be started, the air blower can drive the branch pipes to transmit air sources to the interiors of the two ventilation grooves, the ventilation grooves blow the air sources to the surfaces of the two outer support plates through the air delivery holes, and can blow the air sources to the surfaces of the falling middle support plates, so that the self-cleaning of the chips on the surfaces of the outer support plates and the middle support plates can be rapidly completed, and finally, the chips are collected and stored through the main header, so that the chip pollution device is effectively avoided, and the environmental protection of the device is improved.

Description

A self-cleaning drilling device for PCB board processing

Technical Field

The invention relates to the technical field related to PCB board drilling devices, and in particular to a self-cleaning drilling device for PCB board processing.

Background technique

PCB board, also known as printed circuit board, is the support body of electronic components and the carrier of electrical connection of electronic components. It is widely used in almost all electronic devices. It has the dual function of conductive line and insulating base plate, which can replace complex wiring and realize the electrical connection between components in the circuit. It not only simplifies the assembly and welding of electronic products, reduces the wiring workload under traditional methods, and greatly reduces the labor intensity of workers; but also reduces the size of the whole machine, reduces product cost, and improves the quality and reliability of electronic equipment.

At present, PCB boards need to be drilled during the production process. Although the existing PCB board drilling device is provided with a clamping structure for the PCB board, the clamping structure is simple and the clamping range of the PCB board cannot be flexibly adjusted. In addition, a pad is mostly used to support the PCB board, so the drill bit needs to pass through the PCB board and the pad respectively, which is easy to increase the damage of the drill bit, thereby reducing the life of the drilling device. Moreover, most of the existing PCB board drilling devices are unable to clean up the debris generated during drilling in time, which easily causes the scattered debris to enter the respiratory tract of the staff, thereby affecting the health of the staff.

Summary of the invention

In order to solve the defects of the prior art, the present invention provides a self-cleaning drilling device for PCB board processing.

In order to solve the above technical problems, the present invention provides the following technical solutions:

The present invention discloses a self-cleaning drilling device for PCB board processing, comprising a machine platform, wherein a clamping assembly is installed at the middle position of the bottom surface of the machine platform;

The clamping assembly is used to clamp and fix the PCB board;

The clamping assembly includes a trapezoidal main hole, which is opened in the middle of the lower surface of the machine platform, a main header with a door is fixedly connected to the middle of the lower surface of the machine platform, a main cylinder is fixedly connected to the middle of the bottom of the inner cavity of the main header, a main cylinder is fixedly installed in the middle of the lower surface of the main header, a middle drive column is fixedly connected to the top of the main cylinder, a main sealing ring is fixedly sleeved on the outer wall of the lower end of the middle drive column, and a middle support plate for supporting the middle position of the PCB board is fixedly connected to the top of the middle drive column;

Two auxiliary cylinders are fixedly connected to the two sides of the bottom surface of the inner cavity of the main header, and two driven columns are inserted into the inner cavities at the top ends of the two auxiliary cylinders. The lower ends of the two driven columns are fixedly connected with driven plugs for closing the inner cavity of the auxiliary cylinder, and the top ends of the two driven columns are fixedly connected with outer support plates for supporting the two ends of the PCB board. The bottoms of the two auxiliary cylinders on the opposite side to the main cylinder are respectively connected through two auxiliary pipes;

The top surface of the rear end of the machine is fixedly connected to a frame, and a drilling mechanism is installed at the right end of the frame for drilling and self-cleaning the PCB board;

A control box is installed at the left rear of the upper surface of the machine platform.

As a preferred technical solution of the present invention, the clamping assembly also includes two outer fixing plates, the top ends of the two outer fixing plates are respectively fixedly connected to the lower surfaces of the two ends of the machine, the side surfaces of the two outer fixing plates and the two side surfaces of the main collecting box are embedded with main drive rods through bearings, the right side surface of the lower end of the right outer fixing plate is fixedly connected to a servo motor, and the output shaft end of the left side of the servo motor is fixedly connected to the right end of the main drive rod through a coupling.

As a preferred technical solution of the present invention, two limit holes are provided on the upper surface at both ends of the machine, and two driven pillars are inserted into the inner cavities of the two limit holes away from one end, and the inner cavities of the lower ends of the two driven pillars are respectively sleeved on the outer walls at both ends of the main driving rod, and two insertion holes are provided on the front side of the top ends of the two driven pillars, and the lower surfaces of the inner cavities of the two insertion holes are fixedly connected with card strips, and the inner cavities of the two insertion holes are respectively inserted with two clamping plates for clamping the card strips, and the opposite sides of the two clamping plates are provided with card grooves.

As a preferred technical solution of the present invention, two ventilation slots are provided on both sides of the trapezoidal main hole and located inside the machine, and air supply holes for cleaning crushed materials are provided below the inner walls on both sides of the trapezoidal main hole. A blower is fixedly installed in the middle of the rear surface of the inner cavity of the main collecting box, and the air outlet at the front end of the blower is connected to the inner cavity at the rear end of the two ventilation slots through a branch pipe. The top surfaces of the two jack inner cavities are fixedly connected with positioning springs, and the bottoms of the positioning springs overlap with the upper surface of the clamping plate.

As a preferred technical solution of the present invention, the drilling mechanism includes cylinder one, the middle part of which is fixedly installed at the corner of the right end of the frame, a slide groove is provided on the front of the upper end of the frame, cylinder two is clamped in the middle position of the inner cavity of the slide groove, and the right side surface of the middle section of cylinder two is fixedly connected to the end of the piston rod on the left side of cylinder one, cylinder three is fixedly installed at the end of the piston rod at the front end of cylinder two, and a reduction motor is fixedly installed at the end of the piston rod on the lower side of cylinder three.

As a preferred technical solution of the present invention, a middle sleeve is fixedly connected to the periphery of the lower surface of the reduction motor, an upper cover is fixedly sleeved on the outer wall of the lower end of the middle sleeve, a lower cover is threadedly connected to the outer side of the lower end of the upper cover, uniform exhaust holes are provided on the lower surface of the lower cover, and the gap between the middle sleeve and the upper cover is connected through a transfer pipe.

As a preferred technical solution of the present invention, four fan blades are fixedly connected to the outer wall of the middle section of the output shaft on the lower side of the reduction motor, and two auxiliary collecting boxes for collecting dust are fixedly connected to the upper surfaces at both ends of the upper cover. The bottoms of the opposite sides of the two auxiliary collecting boxes are connected to the two side surfaces of the top of the middle cover through two exhaust pipes respectively, and the sides of the two auxiliary collecting boxes away from each other are hinged with impurity removal doors with filters through hinges.

As a preferred technical solution of the present invention, the end of the output shaft on the lower side of the reduction motor is fixedly connected to the upper matching block, a drill bit is inserted into the inner cavity of the upper matching block, matching holes are opened on both side surfaces of the upper matching block and both side surfaces of the top of the drill bit, and plugs are inserted into the inner cavities of the matching holes.

As a preferred technical solution of the present invention, two auxiliary holes are opened on both sides of the middle section of the drill bit, and two fixing rods are fixedly connected above and below the two auxiliary holes and located on the inner wall of the drill bit. The outer walls at both ends of the two fixing rods are movably sleeved with two grinding discs for grinding the inner wall of the drill hole, and the outer walls of the middle sections of the two fixing rods are sleeved with supporting springs for supporting the two grinding discs, and the outer wall of the lower end of the lower sealing plate is fixedly sleeved with an expansion cover for collecting dust.

As a preferred technical solution of the present invention, the air extraction hole is in a "four-leaf clover" shape, and the inner cavity of the air extraction hole becomes larger from top to bottom.

The beneficial effects of the present invention are:

1. This self-cleaning drilling device for PCB board processing, through the set main cylinder, middle drive column, main sealing ring, middle support plate, driven column, driven plug, outer support plate and auxiliary pipe, first control the main cylinder to start up to drive the middle drive column to move upward, the middle drive column moving upward can drive the main sealing ring and the middle support plate to move upward at the same time, the main sealing ring moving upward will cause negative pressure to be generated inside the main cylinder for air extraction, the main cylinder exhaust can drive the two outer support plates to move downward at the same time, when the middle support plate touches the inner wall of the trapezoidal main hole upward, the middle support plate will be on the same horizontal plane with the machine surface, at this time the middle support plate can support the middle position of the PCB board, and the outer support plates on both sides will move downward to the appropriate position, thus releasing the support at both ends of the PCB board, so that the drilling mechanism can drill holes on the surfaces of both ends of the PCB board conveniently, and then Then, controlling the main position cylinder to start can drive the middle drive column to move downward, and the downward movement of the middle drive column can drive the main sealing ring and the middle support plate to move downward at the same time, and the downward movement of the main sealing ring can drive the two outer support plates to move upward. When the two outer support plates touch the inner wall of the trapezoidal main hole upward, the two outer support plates will be on the same horizontal plane with the machine surface, so that the two outer support plates can support both ends of the PCB board, thereby facilitating the drilling mechanism to drill holes in the middle position of the PCB board. By controlling the lifting and lowering of the piston rod of the main position cylinder, the position of the outer support plate and the middle support plate can be exchanged, thereby quickly completing the support position adjustment of the PCB board, which can improve the drilling quality of the PCB board by the drilling device. At the same time, this drilling method also effectively reduces the damage to the drill bit and greatly improves the service life of the entire device.

2. The self-cleaning drilling device for PCB processing, through the servo motor, main drive rod, driven support, card strip and clamping plate, first pulls the two clamping plates upward, when the two clamping plates are separated from the card strip, the clamping plates can be controlled to move forward and backward, when the clamping plates move to the appropriate position, the clamping plates are released, and the positioning spring pushes the clamping plates downward to engage with the card strip again, so that the positioning of the clamping plates is completed, so that the clamping width of the clamping plates on the PCB can be conveniently adjusted, and finally the servo motor is controlled to rotate forward to drive the main drive rod to rotate forward, and the main drive rod can drive the two clamping plates to move in opposite directions, when the card slots on the two clamping plates contact the angled surface on the PCB, the clamping and positioning of the PCB is quickly completed, effectively reducing the labor intensity of the staff, and the spacing between the two clamping plates can be quickly adjusted by controlling the forward and reverse rotation of the servo motor, so that the clamping assembly can have the function of clamping PCB boards of different sizes, so that the practicality of the device is greatly improved.

3. This self-cleaning drilling device for PCB board processing, through the set blower, branch pipe, ventilation slots and air holes, first controls the start of the blower, and the start of the blower can drive the branch pipe to transmit the air source to the inside of the two ventilation slots, and the ventilation slots then blow the air source out to the surfaces of the two outer support plates through the air holes, and can also blow to the surface of the falling middle support plate, so that the self-cleaning of debris on the surfaces of the outer support plates and the middle support plates can be completed quickly, and finally the debris is collected and stored through the main collecting box, which effectively avoids the debris from polluting the device and improves the environmental protection of the device.

4. The self-cleaning drilling device for PCB board processing, through the provision of cylinder 1, cylinder 2 and cylinder 3, first controls cylinder 1 to start, and cylinder 1 can drive the drill bit below to move horizontally, then controls cylinder 2 to start, and cylinder 2 can drive the drill bit below to move forward and backward, and finally controls cylinder 3 to start, and cylinder 3 can drive the drill bit below to move up and down. In this way, the position adjustment of the drill bit can be completed quickly through the coordinated use of cylinder 1, cylinder 2 and cylinder 3, so that the drill bit can drill holes at various positions of the PCB board, and the drilling efficiency of the device is greatly improved.

5. This self-cleaning drilling device for PCB board processing, through the reduction motor, fan blades and drill bit, first controls the reduction motor to start, the reduction motor can drive the fan blades and the drill bit to rotate at the same time, the drill bit can drill the PCB board when it rotates, the fan blades can drive the middle seal to evacuate air, the middle seal can drive the exhaust hole to extract the debris and dust generated during drilling to the inside of the lower sealing plate, and the lower sealing plate then transmits the debris and dust to the inside of the two auxiliary collecting boxes, so that the debris and dust are automatically collected, thereby enabling the drilling mechanism to have the function of self-cleaning and improving the work efficiency. The safety of personnel's body is ensured, and then cylinder three can control the drill bit to move downward. The drill bit moves downward to drill the PCB board first. After drilling, the drill bit continues to be controlled to move downward. The downward movement of the drill bit will drive the grinding disc to move downward. When the grinding disc passes through the inside of the drill hole, it will grind the inner wall of the hole. Control cylinder three to start again. When cylinder three is started, it can drive the grinding disc to move upward. When the grinding disc moves upward, it can grind the inner wall of the hole for the second time. The grinding quality of the hole is improved through double grinding, which greatly improves the practicability of the drilling mechanism. The drill bit continues to move upward to return to the initial position, which is convenient for the secondary use of the drilling mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

Fig. 1 is a schematic structural diagram of the present invention;

Fig. 2 is a front view of the present invention;

Fig. 3 is a bottom view of the present invention;

FIG4 is a front cross-sectional view of the clamping assembly of the present invention;

FIG5 is a bottom view of FIG4 of the present invention;

FIG6 is a side cross-sectional view of the machine and the clamping assembly of the present invention;

FIG7 is a bottom view of FIG6 of the present invention;

FIG8 is a cross-sectional view of a branch pipe of the present invention;

FIG9 is a perspective view of FIG8 of the present invention;

10 is a side sectional view of the clamping plate and the driven support of the present invention;

FIG11 is an enlarged view of point A in FIG4 of the present invention;

FIG12 is an enlarged view of point B in FIG5 of the present invention;

FIG13 is an enlarged view of point C in FIG9 of the present invention;

FIG14 is an enlarged view of point D in FIG10 of the present invention;

15 is a separation diagram of the driven support and the clamping plate of the present invention;

FIG. 16 is a bottom view of FIG. 15 of the present invention.

In the figure: 1, machine; 2, clamping assembly; 201, trapezoidal main hole; 202, main header; 203, main cylinder; 204, main cylinder; 205, middle drive column; 206, main sealing ring; 207, middle support plate; 208, auxiliary cylinder; 209, driven column; 210, driven plug; 211, outer support plate; 212, auxiliary pipe; 213, outer fixing plate; 214, main drive rod; 215, servo motor; 216, limit hole; 217, driven support column; 218, jack; 219, clamping strip; 220, clamping plate; 221, slot; 222, ventilation slot; 223, air delivery hole; 224, blower; 225, Branch pipe; 226, positioning spring; 3, frame; 4, drilling mechanism; 401, cylinder one; 402, slide; 403, cylinder two; 404, cylinder three; 405, reduction motor; 406, middle cover; 407, upper cover; 408, lower cover; 409, exhaust hole; 410, transfer pipe; 411, fan blade; 412, auxiliary header; 413, exhaust pipe; 414, debris removal door; 415, upper matching block; 416, drill bit; 417, matching hole; 418, plug; 419, auxiliary hole; 420, fixing rod; 421, grinding disc; 422, support spring; 423, expansion cover; 5, control box.

Detailed ways

The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

Embodiment: As shown in Figures 1, 2, 3, 4, 5 and 6, a self-cleaning drilling device for PCB board processing of the present invention comprises a machine table 1, a clamping assembly 2 is installed in the middle of the bottom surface of the machine table 1; the clamping assembly 2 is used to clamp and fix the PCB board; the clamping assembly 2 comprises a trapezoidal main hole 201, the trapezoidal main hole 201 is opened in the middle of the lower surface of the machine table 1, a main header 202 with a door is fixedly connected to the middle of the lower surface of the machine table 1, a main cylinder 203 is fixedly connected to the middle of the bottom surface of the inner cavity of the main header 202, a main cylinder 204 is fixedly installed in the middle position of the lower surface of the main header 202, a middle drive column 205 is fixedly connected to the top of the main cylinder 204, a main sealing ring 206 is fixedly sleeved on the outer wall of the lower end of the middle drive column 205, and the middle drive column 20 5 is fixedly connected to the top of a middle support plate 207 for supporting the middle position of the PCB board; two auxiliary cylinders 208 are fixedly connected to both sides of the bottom surface of the inner cavity of the main header 202, and two driven columns 209 are inserted into the inner cavity of the top of the two auxiliary cylinders 208. The lower ends of the two driven columns 209 are fixedly connected to driven plugs 210 for closing the inner cavity of the auxiliary cylinder 208, and the tops of the two driven columns 209 are fixedly connected to outer support plates 211 for supporting both ends of the PCB board. The bottoms of the two auxiliary cylinders 208 and the opposite sides of the main cylinder 203 are connected through two auxiliary pipes 212 respectively; the top surface of the rear end of the machine 1 is fixedly connected to the frame 3, and the right end of the frame 3 is installed with a drilling mechanism 4 for drilling and self-cleaning the PCB board; a control box 5 is installed at the left rear of the upper surface of the machine 1.

Among them, through the setting of the clamping assembly 2, first control the main cylinder 204 to start, the main cylinder 204 can drive the middle drive column 205 to move upward, the middle drive column 205 moving upward can drive the main sealing ring 206 and the middle support plate 207 to move upward at the same time, the main sealing ring 206 moving upward will cause negative pressure to be generated inside the main cylinder 203 for air extraction, the main cylinder 203 exhausting air can drive the two auxiliary pipes 212 to exhaust the inside of the two auxiliary cylinders 208, and the auxiliary cylinder 208 exhausting air can drive the two driven plugs 210 to move downward When the two driven plugs 210 move downward, they can drive the two driven columns 209 and the two outer support plates 211 to move downward at the same time. When the middle support plate 207 touches the inner wall of the trapezoidal main hole 201 upward, the middle support plate 207 will be on the same horizontal plane as the surface of the machine 1. At this time, the middle support plate 207 can support the middle position of the PCB board, and the outer support plates 211 on both sides will move downward to the appropriate position, thus releasing the support at both ends of the PCB board, so that the drilling mechanism 4 can drill holes on the surfaces at both ends of the PCB board.

As shown in Figures 2, 4, 5, 6, 7, 8, 9, 13, 14, 15 and 16, the clamping assembly 2 also includes two outer fixing plates 213, the top ends of the two outer fixing plates 213 are fixedly connected to the lower surfaces of the two ends of the machine 1 respectively, the sides of the two outer fixing plates 213 and the two sides of the main collecting box 202 are embedded with main driving rods 214 through bearings, the right side surface of the lower end of the outer fixing plate 213 on the right side is fixedly connected to a servo motor 215, and the output shaft end of the left side of the servo motor 215 is fixedly connected to the right end of the main driving rod 214 through a coupling; two limiting holes 216 are provided on the upper surface of the two ends of the machine 1, and two driven pillars 217 are inserted into the inner cavity of the two limiting holes 216 away from one end, and the inner cavity at the lower end of the two driven pillars 217 Two plug holes 218 are respectively sleeved on the outer walls at both ends of the main driving rod 214, and the front of the top of the two driven pillars 217 is provided with two plug holes 218, and the lower surfaces of the inner cavities of the two plug holes 218 are fixedly connected with card strips 219, and the inner cavities of the two plug holes 218 are respectively plugged with two clamping plates 220 for clamping the card strips 219, and the opposite sides of the two clamping plates 220 are provided with card grooves 221; two ventilation slots 222 are provided on both sides of the trapezoidal main hole 201 and located inside the machine 1, and air supply holes 223 for cleaning crushed materials are provided below the inner walls on both sides of the trapezoidal main hole 201, and a blower 224 is fixedly installed in the middle of the rear surface of the inner cavity of the main collecting box 202, and the air outlet at the front end of the blower 224 is connected to the inner cavity at the rear end of the two ventilation slots 222 through a branch pipe 225.

Among them, through the setting of the clamping component 2, the blower 224 is first controlled to start. When the blower 224 is started, it can drive the branch pipe 225 to transmit the wind source to the inside of the two ventilation slots 222. The ventilation slots 222 then blow the wind source out to the surface of the two outer support plates 211 through the air delivery holes 223, and can also blow to the surface of the falling middle support plate 207. In this way, the self-cleaning of debris on the surface of the outer support plates 211 and the middle support plate 207 can be quickly completed, and finally the debris is collected and stored through the main collecting box 202.

As shown in Figures 2, 5, 6, 7, 11 and 12, the drilling mechanism 4 includes a cylinder 1 401, the middle part of which is fixedly installed at the corner of the right end of the frame 3, a slide groove 402 is provided on the front of the upper end of the frame 3, a cylinder 2 403 is clamped in the middle position of the inner cavity of the slide groove 402, and the right side of the middle section of the cylinder 2 403 is fixedly connected to the end of the piston rod on the left side of the cylinder 1 401, the end of the piston rod at the front end of the cylinder 2 403 is fixedly installed with a cylinder 3 404, and the end of the piston rod on the lower side of the cylinder 3 404 is fixed. A reduction motor 405 is installed; a middle sealing sleeve 406 is fixedly connected to the periphery of the lower surface of the reduction motor 405, an upper sealing cover 407 is fixedly sleeved on the outer wall of the lower end of the middle sealing sleeve 406, a lower sealing plate 408 is threadedly connected to the outer side of the lower end of the upper sealing cover 407, and uniform exhaust holes 409 are opened on the lower surface of the lower sealing plate 408, and the gaps between the middle sealing sleeve 406 and the upper sealing cover 407 are connected through transfer pipes 410; four fan blades 411 are fixedly connected to the outer wall of the middle section of the output shaft on the lower side of the reduction motor 405, and the upper surfaces of the two ends of the upper sealing cover 407 are fixedly connected to the outer wall of the middle section of the output shaft on the lower side of the reduction motor 405. Two auxiliary collecting boxes 412 for collecting dust are fixedly connected, and the bottoms of the opposite sides of the two auxiliary collecting boxes 412 are connected to the two side surfaces of the top of the middle sealing sleeve 406 through two exhaust pipes 413 respectively. The two sides of the two auxiliary collecting boxes 412 away from each other are hinged with a dust removal door 414 with a filter screen through a hinge; the output shaft end of the lower side of the reduction motor 405 is fixedly connected to the upper matching block 415, and the inner cavity of the upper matching block 415 is plugged with a drill bit 416. The two side surfaces of the upper matching block 415 and the two side surfaces of the top of the drill bit 416 are provided with matching holes 417, and the matching holes 418 are provided with matching holes 419. The inner cavities of 17 are all plugged with plugs 418; two auxiliary holes 419 are opened on both sides of the middle section of the drill bit 416, and two fixing rods 420 are fixedly connected above and below the two auxiliary holes 419 and on the inner wall of the drill bit 416, and the outer walls at both ends of the two fixing rods 420 are movably sleeved with two grinding discs 421 for grinding the inner wall of the drill hole, and the outer walls of the middle sections of the two fixing rods 420 are sleeved with support springs 422 for supporting the two grinding discs 421, and the outer wall of the lower end of the lower sealing plate 408 is fixedly sleeved with an expansion cover 423 for collecting dust.

Among them, first control cylinder 1 401 to start, cylinder 1 401 start can drive the drill bit 416 below to move horizontally, then control cylinder 2 403 to start, cylinder 2 403 start can drive the drill bit 416 below to move forward and backward, and finally control cylinder 3 404 to start, cylinder 3 404 start can drive the drill bit 416 below to move up and down, so that the coordinated use of cylinder 1 401, cylinder 2 403 and cylinder 3 404 can quickly complete To adjust the position of the drill bit 416, first control the reduction motor 405 to start, and the reduction motor 405 can drive the fan blade 411 and the drill bit 416 to rotate at the same time. The rotation of the drill bit 416 can drill holes on the PCB board, and the rotation of the fan blade 411 can drive the middle sealing sleeve 406 to evacuate air. The evacuation of the middle sealing sleeve 406 can drive the exhaust hole 409 to extract the debris and dust generated during drilling into the lower sealing plate 408, and the lower sealing plate 408 then removes the debris and dust through the transfer The pipe 410 transmits the debris and dust to the inside of the middle envelope 406, and the middle envelope 406 then transmits the debris and dust to the inside of the two sub-collecting boxes 412 through the exhaust pipe 413, so that the debris and dust are automatically collected, thereby prompting the drilling mechanism 4 to have a self-cleaning function, and then the cylinder three 404 can control the drill bit 416 to move downward. The drill bit 416 moves downward to drill the PCB board first, and after the drilling is completed, the drill bit 416 continues to be controlled to move downward. The downward movement of the drill bit 416 will drive the grinding disc 421 to move downward. When the grinding disc 421 passes through the inside of the drill hole, it will grind the inner wall of the hole, and control the cylinder three 404 to start again. The start of the cylinder three 404 can drive the grinding disc 421 to move upward. The grinding disc 421 moves upward to perform a secondary grinding on the inner wall of the hole. The double grinding improves the grinding quality of the hole, which greatly improves the practicality of the drilling mechanism 4. The drill bit 416 continues to move upward to return to the initial position, which is convenient for the secondary use of the drilling mechanism 4.

As shown in FIG. 12 , the air extraction hole 409 is in the shape of a “four-leaf clover”, and the inner cavity of the air extraction hole 409 becomes larger from top to bottom.

The small diameter of the top of the air extraction hole 409 can speed up the extraction efficiency of the debris, and the large diameter of the bottom of the air extraction hole 409 can increase the extraction range of the debris.

When working, first pull the two clamping plates 220 upwards. When the two clamping plates 220 are separated from the card strip 219, the clamping plates 220 can be controlled to move forward and backward. When the clamping plates 220 move to the appropriate position, the clamping plates 220 are released. At this time, the positioning spring 226 will push the clamping plates 220 downwards and engage with the card strip 219 again, thus completing the positioning of the clamping plates 220, so that the clamping width of the clamping plates 220 on the PCB board can be easily adjusted. Finally, the servo motor 215 is controlled to rotate forward. The forward rotation of the servo motor 215 can drive the main driving rod 214 to rotate forward. The forward rotation of the main driving rod 214 can drive the two driven pillars 217 to move in opposite directions. The two driven pillars 217 move in opposite directions. When the two clamping plates 220 are moved in opposite directions, the clamping grooves 221 on the two clamping plates 220 are in contact with the angled surfaces on the PCB board, the clamping and positioning of the PCB board is quickly completed. First, the cylinder 1 401 is controlled to start. The cylinder 1 401 is started to drive the drill bit 416 below to move horizontally. Then, the cylinder 2 403 is controlled to start. The cylinder 2 403 is started to drive the drill bit 416 below to move forward and backward. Finally, the cylinder 3 404 is controlled to start. The cylinder 3 404 is started to drive the drill bit 416 below to move up and down. In this way, the position of the drill bit 416 can be quickly completed through the coordinated use of the cylinder 1 401, the cylinder 2 403 and the cylinder 3 404. Adjustment, first control the reduction motor 405 to start, the reduction motor 405 starting can drive the fan blade 411 and the drill bit 416 to rotate at the same time, the drill bit 416 rotates to drill the PCB board, the fan blade 411 rotates to drive the middle cover 406 to evacuate, the middle cover 406 evacuates air and drives the exhaust hole 409 to extract the debris and dust generated during drilling to the inside of the lower cover plate 408, the lower cover plate 408 then transfers the debris and dust to the inside of the middle cover 406 through the transfer pipe 410, the middle cover 406 then transfers the debris and dust to the inside of the two auxiliary collection boxes 412 through the exhaust pipe 413, thus completing the automatic collection of debris and dust, thereby enabling the drilling mechanism 4 to have self-cleaning The function of the management, and then the cylinder three 404 can control the drill bit 416 to move downward, the drill bit 416 moves downward to drill the PCB board first, and the drilling is completed. The drill bit 416 continues to be controlled to move downward, and the downward movement of the drill bit 416 will drive the grinding disc 421 to move downward. When the grinding disc 421 passes through the inside of the drill hole, it will grind the inner wall of the hole, and the cylinder three 404 is controlled to start again. The cylinder three 404 is started to drive the grinding disc 421 to move upward, and the grinding disc 421 moves upward to grind the inner wall of the hole for the second time. The grinding quality of the hole is improved through double grinding, which greatly improves the practicality of the drilling mechanism 4. The drill bit 416 continues to move upward to return to the initial position, which is convenient for the secondary use of the drilling mechanism 4.

Adjustment of the support position: First, control the main cylinder 204 to start. The main cylinder 204 can drive the middle drive column 205 to move upward when it starts. The middle drive column 205 can drive the main sealing ring 206 and the middle support plate 207 to move upward at the same time. The upward movement of the main sealing ring 206 will cause negative pressure to be generated inside the main cylinder 203 for air extraction. The main cylinder 203 can drive the two auxiliary pipes 212 to extract air from the inside of the two auxiliary cylinders 208. The auxiliary cylinder 208 can drive the two slave plugs 210 to move downward. The two slave plugs 210 move downward. The movement can drive the two driven columns 209 and the two outer support plates 211 to move downward at the same time. When the middle support plate 207 touches the inner wall of the trapezoidal main hole 201 upward, the middle support plate 207 will be on the same horizontal plane with the surface of the machine table 1. At this time, the middle support plate 207 can support the middle position of the PCB board, and the outer support plates 211 on both sides will move downward to the appropriate position, thus releasing the support at both ends of the PCB board, so that it is convenient for the drilling mechanism 4 to drill holes on the surfaces of both ends of the PCB board, and then control the main position cylinder 204 to start, and the main When the air cylinder 204 is started, the middle drive column 205 can be driven to move downward, and the middle drive column 205 can drive the main sealing ring 206 and the middle support plate 207 to move downward at the same time. The main sealing ring 206 moves downward, and the air pressure is transmitted to the inside of the two auxiliary cylinders 208 through the auxiliary pipe 212. The air pressure inside the auxiliary cylinder 208 pushes the two driven plugs 210 to move upward at the same time. The upward movement of the two driven plugs 210 can drive the two outer support plates 211 to move upward. When the two outer support plates 211 touch the inner wall of the trapezoidal main hole 201 upward, The two outer support plates 211 will be on the same horizontal plane as the surface of the machine table 1, so that the two outer support plates 211 can support both ends of the PCB board, thereby facilitating the drilling mechanism 4 to drill holes in the middle position of the PCB board. By controlling the lifting and lowering of the piston rod of the main cylinder 204, the positions of the outer support plates 211 and the middle support plates 207 can be exchanged, thereby quickly completing the adjustment of the support position of the PCB board, so that the drilling quality of the PCB board by the drilling device can be improved. At the same time, this drilling method also effectively reduces the damage of the drill bit 416;

Self-cleaning of the device: First, the blower 224 is controlled to start. When the blower 224 starts, it can drive the branch pipe 225 to transmit the wind source to the inside of the two ventilation slots 222. The ventilation slots 222 then blow the wind source out to the surface of the two outer support plates 211 through the air delivery holes 223, and can also blow to the surface of the falling middle support plate 207. In this way, the self-cleaning of the debris on the surface of the outer support plate 211 and the middle support plate 207 can be completed quickly, and finally the debris is collected and stored through the main header 202;

Disassembly of the PCB board: First, control the servo motor 215 to reverse. The reverse rotation of the servo motor 215 can drive the two driven pillars 217 and the two clamping plates 220 to move in opposite directions at the same time. When the slots 221 on the two clamping plates 220 are separated from the surface of the PCB board, the disassembly of the PCB board is quickly completed.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A self-cleaning drilling device for PCB board processing, comprising a machine platform (1), characterized in that a clamping assembly (2) is installed in the middle of the bottom surface of the machine platform (1); The clamping assembly (2) is used to clamp and fix the PCB board; The clamping assembly (2) comprises a trapezoidal main hole (201), the trapezoidal main hole (201) is opened in the middle of the lower surface of the machine platform (1), a main header (202) with a door is fixedly connected to the middle of the lower surface of the machine platform (1), a main cylinder (203) is fixedly connected to the middle of the bottom surface of the inner cavity of the main header (202), a main cylinder (204) is fixedly installed in the middle of the lower surface of the main header (202), a middle drive column (205) is fixedly connected to the top of the main cylinder (204), a main sealing ring (206) is fixedly sleeved on the outer wall of the lower end of the middle drive column (205), and a middle support plate (207) for supporting the middle position of the PCB board is fixedly connected to the top of the middle drive column (205); Two auxiliary cylinders (208) are fixedly connected to the two sides of the bottom surface of the inner cavity of the main header (202); two driven columns (209) are inserted into the inner cavities at the top ends of the two auxiliary cylinders (208); the lower ends of the two driven columns (209) are fixedly connected to driven plugs (210) for sealing the inner cavity of the auxiliary cylinder (208); the top ends of the two driven columns (209) are fixedly connected to external support plates (211) for supporting the two ends of the PCB board; the bottoms of the two auxiliary cylinders (208) on the opposite sides to the main cylinder (203) are respectively connected through two auxiliary tubes (212); The top surface of the rear end of the machine platform (1) is fixedly connected to a frame (3), and a drilling mechanism (4) is installed at the right end of the frame (3) for drilling and self-cleaning the PCB board; A control box (5) is installed at the left rear of the upper surface of the machine platform (1). 2. A self-cleaning drilling device for PCB board processing according to claim 1, characterized in that the clamping assembly (2) also includes two outer fixing plates (213), the top ends of the two outer fixing plates (213) are respectively fixedly connected to the lower surfaces of the two ends of the machine table (1), the side surfaces of the two outer fixing plates (213) and the two side surfaces of the main collecting box (202) are both embedded with main drive rods (214) through bearings, the right side surface of the lower end of the right outer fixing plate (213) is fixedly connected to a servo motor (215), and the output shaft end of the left side of the servo motor (215) is fixedly connected to the right end of the main drive rod (214) through a coupling. 3. A self-cleaning drilling device for PCB board processing according to claim 2, characterized in that two limit holes (216) are provided on the upper surface of both ends of the machine table (1), two driven pillars (217) are plugged into the inner cavity away from one end of the two limit holes (216), and the inner cavities of the lower ends of the two driven pillars (217) are respectively sleeved on the outer walls of the two ends of the main driving rod (214), two plug holes (218) are provided on the front of the top ends of the two driven pillars (217), the lower surfaces of the inner cavities of the two plug holes (218) are fixedly connected with a clamping strip (219), the inner cavities of the two plug holes (218) are respectively plugged with two clamping plates (220) for clamping the clamping strip (219), and the opposite sides of the two clamping plates (220) are provided with a clamping groove (221). 4. A self-cleaning drilling device for PCB board processing according to claim 3, characterized in that two ventilation slots (222) are provided on both sides of the trapezoidal main hole (201) and located inside the machine (1), air supply holes (223) for cleaning debris are provided below the inner walls on both sides of the trapezoidal main hole (201), a blower (224) is fixedly installed in the middle of the rear surface of the inner cavity of the main header (202), and the air outlet at the front end of the blower (224) is connected to the inner cavity at the rear end of the two ventilation slots (222) through a branch pipe (225). 5. A self-cleaning drilling device for PCB board processing according to claim 1, characterized in that the drilling mechanism (4) includes a cylinder one (401), the middle part of the cylinder one (401) is fixedly installed at the corner of the right end of the frame (3), a slide groove (402) is opened on the front of the upper end of the frame (3), the middle position of the inner cavity of the slide groove (402) is clamped with a cylinder two (403), and the right side surface of the middle section of the cylinder two (403) is fixedly connected to the end of the piston rod on the left side of the cylinder one (401), the piston rod end of the front end of the cylinder two (403) is fixedly installed with a cylinder three (404), and the piston rod end of the lower side of the cylinder three (404) is fixedly installed with a reduction motor (405). 6. A self-cleaning drilling device for PCB board processing according to claim 5, characterized in that a middle sealing sleeve (406) is fixedly connected to the periphery of the lower surface of the reduction motor (405), an upper sealing cover (407) is fixedly sleeved on the outer wall of the lower end of the middle sealing sleeve (406), a lower sealing disk (408) is threadedly connected to the outer side of the lower end of the upper sealing cover (407), uniform exhaust holes (409) are opened on the lower surface of the lower sealing disk (408), and the gaps between the middle sealing sleeve (406) and the upper sealing cover (407) are connected through transfer pipes (410). 7. A self-cleaning drilling device for PCB board processing according to claim 6, characterized in that four fan blades (411) are fixedly connected to the outer wall of the middle section of the output shaft on the lower side of the reduction motor (405), and two auxiliary collecting boxes (412) for collecting dust are fixedly connected to the upper surfaces of the two ends of the upper cover (407), and the bottoms of the opposite sides of the two auxiliary collecting boxes (412) are connected to the two side surfaces of the top of the middle cover (406) through two exhaust pipes (413) respectively, and the sides of the two auxiliary collecting boxes (412) away from each other are hinged with a dust removal door (414) with a filter screen through a hinge. 8. A self-cleaning drilling device for PCB board processing according to claim 7, characterized in that the end of the output shaft on the lower side of the reduction motor (405) is fixedly connected to the upper matching block (415), a drill bit (416) is inserted into the inner cavity of the upper matching block (415), matching holes (417) are opened on both side surfaces of the upper matching block (415) and both side surfaces of the top of the drill bit (416), and plugs (418) are inserted into the inner cavities of the matching holes (417). 9. A self-cleaning drilling device for PCB board processing according to claim 8, characterized in that two auxiliary holes (419) are provided on both side surfaces of the middle section of the drill bit (416), two fixing rods (420) are fixedly connected above and below the two auxiliary holes (419) and on the inner wall of the drill bit (416), two grinding discs (421) for grinding the inner wall of the drill hole are movably sleeved on the outer walls at both ends of the two fixing rods (420), supporting springs (422) for supporting the two grinding discs (421) are sleeved on the outer walls of the middle sections of the two fixing rods (420), and an expansion cover (423) for collecting dust is fixedly sleeved on the outer wall of the lower end of the lower sealing plate (408). 10. A self-cleaning drilling device for PCB board processing according to claim 6, characterized in that the exhaust hole (409) is in the shape of a "four-leaf clover", and the inner cavity of the exhaust hole (409) becomes larger from top to bottom.