Drilling device for PCB processing and drilling technology thereof

Abstract

The invention discloses a drilling device for PCB processing and a drilling process thereof, and relates to the technical field of PCB drilling, the drilling device comprises a workbench, a lifting device is arranged at the top of the workbench, drilling equipment is fixedly mounted at the top of the lifting device, a fixing seat is fixedly mounted at the top of the workbench, and a drilling device is fixedly mounted at the top of the fixing seat. A connecting block is rotatably mounted at the top of the fixed seat, a placing plate is fixedly mounted at the top of the connecting block, and a positioning device is arranged on the surface of the placing plate; wherein the positioning device comprises a moving plate, an elastic telescopic frame, rollers, an annular plate, an inclined panel, an abutting plate, a connecting plate, a transverse plate, a bent plate, a movable plate, an elastic telescopic plate and a forked plate, the moving plate is slidably mounted at the top of the placement plate, and when the clamping force of the abutting plate on the PCB is too large, the abutting plate can move towards the interior of the moving plate; and the elastic telescopic plate can limit the forking plate, the connecting plate and the moving plate to move, and the situation that drilling is affected by bending of the PCB pushed by the abutting plate is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of PCB drilling, and in particular to a drilling device and a drilling process thereof for PCB processing. Background Art

[0002] Drilling in PCB processing refers to the process of drilling holes on printed circuit boards. These holes are used to install components, connect wires between different circuit layers, or for mechanical support and fixation.

[0003] The patent with the patent announcement number CN217413187U relates to a drilling device for PCB board processing, including a base, a first slide groove is provided on the top of the base, a first electric push rod is welded and installed on the rear side wall of the first slide groove, a first slider is welded and installed on the free end of the first electric push rod, the first slider is slidably installed with the first slide groove, a first fixing plate is welded and installed on the top of the first slider, a first groove is provided on the top of the first fixing plate, and a first support plate is welded and installed on the top of the first fixing plate. The first electric push rod drives the first slider to move forward and backward in the first slide groove, thereby controlling the longitudinal position of the device drilling, and the telescopic rod and the spring press down the pressure plate, thereby simply and stably fixing the PCB board, and the PCB board will not be damaged due to excessive pressure, and the first motor drives the threaded rod to rotate, and the threaded rod drives the second slider to move left and right in the second slide groove, thereby controlling the lateral position of the device drilling.

[0004] In the above patent, the pressing plate is pressed down by a telescopic rod and a spring, so that the PCB board is simply and stably fixed, and the PCB board will not be damaged due to excessive pressure. The threaded rod is driven to rotate by the first motor, and the threaded rod drives the second slider to move left and right in the second slide groove, so as to control the lateral position of the drilling device. However, when drilling the PCB board, the position of the PCB board needs to be fixed. At the same time, since the PCB board has a certain elasticity, the PCB board will bend and deform when the clamping force of the PCB board is too large. When drilling the bent and deformed PCB board, the position and size of the drilling hole will be affected. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a drilling device and a drilling process for PCB processing, which solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drilling device for PCB processing, comprising a workbench, a lifting device is provided on the top of the workbench, a drilling device is fixedly installed on the top of the lifting device, a fixed seat is fixedly installed on the top of the workbench, a connecting block is rotatably installed on the top of the fixing seat, a placing plate is fixedly installed on the top of the connecting block, and a positioning device is provided on the surface of the placing plate; wherein the positioning device comprises a moving plate, an elastic telescopic frame, a roller, an annular plate, an inclined plate, a butt plate, a connecting plate, a transverse plate, a curved plate, a movable plate, an elastic telescopic plate and a forked plate, the moving plate is slidably installed on the top of the placing plate, the elastic telescopic frame is fixedly installed on the surface of the drilling device, the roller is rotatably installed on the bottom of the elastic telescopic frame, an annular groove is provided on the top of the placing plate, and the annular plate is slidably installed on the annular plate The inside of the shaped plate, the inclined plate slides through the inside of the placement plate, the top of the placement plate is provided with a cavity, the connecting plate is fixedly mounted on the bottom of the movable plate, the bottom of the connecting plate is slidably mounted on the top of the inclined plate, the surface of the movable plate is provided with a groove, the resisting plate is slidably mounted inside the groove, the cross plate is fixedly mounted on the side of the resisting plate close to the connecting plate, the bending plate is slidably mounted on the bottom of the movable plate, the movable plate is slidably mounted inside the cavity, the elastic telescopic plate is fixedly mounted on the bottom of the movable plate, and the forked plate is fixedly mounted on the side of the connecting plate close to the elastic telescopic plate; the PCB board and the movable plate will push the resisting plate to move toward the inside of the groove, the resisting plate will drive the cross plate to move when it moves, the inclined surface of the cross plate will push the bending plate to move downward when the bending plate moves downward, and it will contact the movable plate and push the movable plate to move downward.

[0007] According to the above technical scheme, a No. 1 spring is arranged between the annular plate and the annular groove, and the elastic force of the No. 1 spring will drive the annular plate to reset, a No. 2 spring is arranged between the inclined plate and the placement plate, and the side of the inclined plate close to the annular plate is set as an inclined surface, a No. 1 spring sheet is arranged between the connecting plate and the inclined plate, a No. 3 spring is arranged between the abutment plate and the groove, a No. 4 spring is arranged between the bending plate and the movable plate, the side of the cross plate close to the bending plate is set as an inclined surface, a No. 5 spring is arranged between the movable plate and the cavity, and the bottom of the free end of the elastic telescopic plate is set as an inclined surface.

[0008] According to the above technical solution, a through hole is opened at the center position of the placement plate, a circular plate is slidably installed inside the through hole, an inclined plate is fixedly installed at the bottom of the circular plate, the side of the circular plate close to the inclined plate is set to an arc shape, and a return spring is arranged between the circular plate and the through hole. When the circular plate moves upward, it will support the bottom of the drilling position of the PCB board to prevent the PCB board from deforming downward when being drilled and affecting the drilling effect.

[0009] According to the above technical solution, a scraping device for preventing burrs from being generated on the bottom of the PCB board is arranged inside the placement plate, a limiting device is arranged at the bottom of the placement plate, the scraping device includes a sleeve plate, a friction plate, a connecting rod and a contact plate, the sleeve plate is rotatably installed inside the circular plate, the friction plate is fixedly installed on the top of the sleeve plate, the connecting rod is fixedly installed inside the sleeve plate through a bracket, a spiral groove is provided at the bottom of the connecting rod, and the contact plate is fixedly installed inside the connecting block, when the circular plate moves downward, the sleeve plate will be driven to move downward, the sleeve plate will be driven downward to move downward, the connecting rod will be driven downward to move downward, the connecting rod will be driven downward to move downward to cause the contact plate to move inside the spiral groove, so that when the contact plate moves inside the spiral groove, it will push the connecting rod and the sleeve plate to rotate.

[0010] According to the above technical solution, a control switch is fixedly installed at the bottom of the contact plate, a conical block is fixedly installed at the bottom of the connecting rod, and a vacuum cleaner is fixedly installed at the bottom of the workbench. The control switch is electrically connected to the vacuum cleaner. The vacuum cleaner will vacuum the position where the PCB board is drilled to prevent foreign matter generated during drilling from remaining on the placement board.

[0011] According to the above technical solution, the friction plate has elasticity so that the friction plate can be deformed, and the contact plate is in contact with the spiral groove.

[0012] According to the above technical scheme, the limiting device includes a fixed disk, a circular disk, a locking block, a pushing rod and a limiting block. The fixed disk is fixedly installed on the top of the fixed seat, the circular disk is slidably installed on the arc surface of the fixed disk, the locking block is fixedly installed on the top of the circular disk, the pushing rod is fixedly installed on the bottom of the annular plate, a locking groove is opened on the surface of the fixed disk, and the limiting block is slidably installed on the bottom of the fixed disk. A tension spring is arranged between the circular disk and the fixed disk. When the pushing rod moves downward, it will be inserted between the locking blocks, so that the locking block will limit the pushing rod and the placing plate. When the pushing rod moves downward, it will push the pressing rod to move downward, and when the pressing rod moves downward, it will push the fixed plate to move downward.

[0013] According to the above technical solution, an insert plate is slidably penetrated inside the fixed disk, a swing plate is rotatably installed on the top of the insert plate, a slider is slidably installed on the top of the insert plate, a bolt is installed on the internal thread of the insert plate, the bolt is rotatably connected to the slider, a pressing rod is fixedly installed on the circumferential surface of the push rod, a fixed plate is fixedly installed on the top of the fixed disk through an elastic telescopic rod, a torsion spring is arranged between the swing plate and the insert plate, and a No. 6 spring is arranged between the insert plate and the fixed disk, so that the PCB board can be adjusted in an emergency, and the limit block and the insert plate will perform multiple limits on the circular disk to prevent the circular disk from being arbitrarily controlled during work.

[0014] A drilling process of a drilling device for PCB processing comprises the following steps: Step 1: Place the PCB board on the abutment plate, drive the lifting device to drive the drilling device to move downward, and when the drilling device moves downward, it drives the elastic telescopic frame and the roller to move downward; Step 2: When the roller moves downward, it contacts the annular plate and pushes the annular plate to move downward. When the annular plate moves downward, the inclined surface of the inclined plate squeezes the inclined plate to move in the direction of the moving plate; Step 3: When the inclined plate moves, it drives the No. 1 spring and the connecting plate to move. When the connecting plate moves, it drives the No. 3 spring and the abutment plate to move. When the abutment plate moves, it clamps the PCB board. Step 4: Drill holes in the PCB board as the drilling equipment moves downward.

[0015] The present invention provides a drilling device and a drilling process for PCB processing, which have the following beneficial effects: (1) In the present invention, when the drilling equipment is working downward, the elastic telescopic frame and the roller will push the annular plate to move downward. When the arc plate moves downward, it will push the inclined plate and the connecting plate to move. When the connecting plate moves, it will drive the moving plate and the resisting plate to clamp the PCB. When the resisting plate clamps the PCB too hard, the resisting plate will move toward the inside of the moving plate, so that the elastic telescopic plate will limit the movement of the bifurcated plate, the connecting plate and the moving plate, thereby preventing the resisting plate from pushing the PCB to bend and affect the drilling. When the inclined plate moves, it will push the circular plate and the inclined plate to move upward. When the circular plate moves upward, it will support the bottom of the drilling position of the PCB, thereby preventing the PCB from deforming downward when being drilled and affecting the drilling effect.

[0016] (2) In the invention, when the circular plate moves upward, it will drive the sleeve plate and the friction plate to move upward. The friction plate will fit the bottom of the position where the PCB is drilled. When the sleeve plate moves up and down, it will drive the connecting rod to move. The contact plate will push the connecting rod and the sleeve plate to rotate. When the sleeve plate rotates, it will drive the friction plate to rub the bottom of the PCB. Thus, the friction plate can scrape off the burrs generated by the drilling on the bottom of the PCB, thereby preventing the burrs on the bottom of the PCB from affecting the quality of the drilling on the PCB. At the same time, when the connecting rod moves upward, the conical block will press the control switch to turn on the vacuum cleaner, and the vacuum cleaner will vacuum the position where the PCB is drilled, thereby preventing foreign matter generated during drilling from remaining on the placement plate.

[0017] (3) In this invention, when the annular plate moves downward, it will drive the push rod to insert into the interior of the positioning block to limit the placement plate, thereby preventing the PCB board from rotating when drilling. By moving the circular disk and the positioning block downward, the limit on the placement plate will be released, so that the PCB board can be adjusted in an emergency. The limit block and the plug plate will perform multiple limits on the circular disk to prevent the circular disk from being arbitrarily controlled during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the workbench of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting block of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A; Figure 5 This is a schematic diagram of the cross-sectional structure of a circular plate of the present invention; Figure 6 This is a schematic diagram of the position structure of the transverse plate and the curved plate of the present invention; Figure 7 For the present invention Figure 3 A schematic diagram of the structure of part B in the middle is enlarged; Figure 8 It is a schematic diagram of the position structure of the limit block and the plug plate of the present invention.

[0019] In the figure: 1, workbench; 2, lifting device; 4, drilling equipment; 5, fixed seat; 6, connecting block; 7, placing plate; 8, moving plate; 9, elastic telescopic frame; 10, roller; 11, annular plate; 12, inclined plate; 13, abutment plate; 14, connecting plate; 15, horizontal plate; 16, bending plate; 17, movable plate; 18, elastic telescopic plate; 19, bifurcated plate; 201, circular plate; 202, inclined plate; 203, 03, sleeve plate; 204, friction plate; 205, connecting rod; 206, contact plate; 207, control switch; 208, conical block; 209, vacuum cleaner; 211, fixed plate; 212, round plate; 213, positioning block; 214, push rod; 215, limit block; 216, plug plate; 217, swing plate; 218, slider; 219, bolt; 2110, pressing rod; 2111, fixed plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 5One embodiment of the present invention is: a drilling device for PCB processing, comprising a workbench 1, a lifting device 2 is arranged on the top of the workbench 1, a drilling device 4 is fixedly installed on the top of the lifting device 2, a fixing seat 5 is fixedly installed on the top of the workbench 1, a connecting block 6 is rotatably installed on the top of the fixing seat 5, a placing plate 7 is fixedly installed on the top of the connecting block 6, and a positioning device is arranged on the surface of the placing plate 7; wherein the positioning device comprises a moving plate 8, an elastic telescopic frame 9, a roller 10, an annular plate 11, an inclined plate 12, a stop plate 13, a connecting plate 14, a transverse plate 15, a bending plate 16, a movable plate 17, an elastic telescopic plate 18 and a fork plate 19, the moving plate 8 is slidably installed on the top of the placing plate 7, the elastic telescopic frame 9 is fixedly installed on the surface of the drilling device 4, the roller 10 is rotatably installed on the bottom of the elastic telescopic frame 9, an annular groove is opened on the top of the placing plate 7, and the annular plate 11 is slidably installed on the annular plate 1 1, the inclined plate 12 slides through the inside of the placement plate 7, the top of the placement plate 7 is provided with a cavity, the connecting plate 14 is fixedly mounted on the bottom of the moving plate 8, the bottom of the connecting plate 14 is slidably mounted on the top of the inclined plate 12, the surface of the moving plate 8 is provided with a groove, the push plate 13 is slidably mounted in the inside of the groove, the cross plate 15 is fixedly mounted on the side of the push plate 13 close to the connecting plate 14, the bending plate 16 is slidably mounted on the bottom of the moving plate 8, the movable plate 17 is slidably mounted in the inside of the cavity, the elastic telescopic plate 18 is fixedly mounted on the bottom of the movable plate 17, and the fork plate 19 is fixedly mounted on the side of the connecting plate 14 close to the elastic telescopic plate 18; when the clamping force of the push plate 13 on the PCB board is too large, the push plate 13 will move toward the inside of the moving plate 8, so that the elastic telescopic plate 18 will limit the movement of the fork plate 19, the connecting plate 14 and the moving plate 8, so as to avoid the push plate 13 pushing the PCB board to bend and affect the drilling.

[0022] A No. 1 spring is arranged between the annular plate 11 and the annular groove, and the elastic force of the No. 1 spring will drive the annular plate 11 to reset, a No. 2 spring is arranged between the inclined plate 12 and the placement plate 7, and the side of the inclined plate 12 close to the annular plate 11 is set as an inclined surface, a No. 1 spring sheet is arranged between the connecting plate 14 and the inclined plate 12, a No. 3 spring is arranged between the abutment plate 13 and the groove, a No. 4 spring is arranged between the bending plate 16 and the movable plate 8, a side of the transverse plate 15 close to the bending plate 16 is set as an inclined surface, a No. 5 spring is arranged between the movable plate 17 and the cavity, and the bottom of the free end of the elastic telescopic plate 18 is set as an inclined surface.

[0023] A through hole is provided at the center of the placement plate 7, a circular plate 201 is slidably installed inside the through hole, an inclined plate 202 is fixedly installed at the bottom of the circular plate 201, the side of the circular plate 201 close to the inclined plate 202 is arranged in an arc shape, a return spring is arranged between the circular plate 201 and the through hole, and when the circular plate 201 moves upward, it will support the bottom of the drilling position of the PCB board to prevent the PCB board from deforming downward when being drilled and affecting the drilling effect.

[0024] A drilling process of a drilling device for PCB processing comprises the following steps: Step 1: Place the PCB board on the abutment plate 13, drive the lifting device 2 to drive the drilling device 4 to move downward, and when the drilling device 4 moves downward, it drives the elastic telescopic frame 9 and the roller 10 to move downward; Step 2: When the roller 10 moves downward, it contacts the annular plate 11 and pushes the annular plate 11 to move downward. When the annular plate 11 moves downward, the inclined surface of the inclined plate 12 presses the inclined plate 12 to move toward the moving plate 8; Step 3: When the inclined plate 12 moves, it drives the first spring and the connecting plate 14 to move. When the connecting plate 14 moves, it drives the third spring and the abutment plate 13 to move. When the abutment plate 13 moves, it clamps the PCB board; Step 4: The drilling device 4 drills holes in the PCB board while moving downward.

[0025] When the present embodiment is working, the PCB board is placed on the abutment plate 13, the lifting device 2 will drive the drilling device 4 to move downward, and when the drilling device 4 moves downward, it will drive the elastic telescopic frame 9 and the roller 10 to move downward, and when the roller 10 moves downward, it will push the annular plate 11 to move downward, and when the annular plate 11 moves downward, it will contact the inclined surface of the inclined plate 12, so that when the annular plate 11 moves, it will push the inclined plate 12 to move in the direction of the connecting block 6, and when the inclined plate 12 moves, it will drive the No. 1 spring and the connecting plate 14 to move, and when the connecting plate 14 moves, it will drive the moving plate 8 to move, and when the moving plate 8 moves, it will drive the No. 3 spring and the abutment plate 13 to move, and when the abutment plate 13 moves, it will clamp the PCB board, and when the clamping force of the abutment plate 13 on the PCB board is too large, the PCB board and the moving plate 8 will push the abutment plate 13 to When the inside of the groove moves, the anti-plate 13 moves, and the cross plate 15 is driven to move. When the cross plate 15 moves, the inclined surface of the cross plate 15 pushes the bending plate 16 to move downward. When the bending plate 16 moves downward, it contacts with the movable plate 17 and pushes the movable plate 17 to move downward. When the movable plate 17 moves downward, it drives the elastic telescopic plate 18 to move downward. When the elastic telescopic plate 18 moves downward, it moves between the forked plates 19. The elastic telescopic plate 18 blocks the forked plate 19 and the connecting plate 14 from moving, thereby stopping the connecting plate 14 from continuing to drive the moving plate 8 and the anti-plate 13 to move. When the inclined plate 12 moves, it contacts with the inclined surface of the inclined plate 202, so that the inclined plate 12 pushes the inclined plate 202 and the circular plate 201 to move upward. When the circular plate 201 moves upward, it supports the bottom of the PCB board.

[0026] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, a scraping device for preventing burrs from being generated on the bottom of the PCB board is arranged inside the placement plate 7, and a limiting device is arranged at the bottom of the placement plate 7. The scraping device includes a sleeve plate 203, a friction plate 204, a connecting rod 205 and a contact plate 206. The sleeve plate 203 is rotatably mounted inside the circular plate 201, the friction plate 204 is fixedly mounted on the top of the sleeve plate 203, the connecting rod 205 is fixedly mounted inside the sleeve plate 203 through a bracket, a spiral groove is provided at the bottom of the connecting rod 205, and the contact plate 206 is fixedly mounted inside the connecting block 6. The friction plate 204 can scrape off the burrs generated by drilling on the bottom of the PCB board, so as to prevent the burrs on the bottom of the PCB board from affecting the quality of the drilling of the PCB board after the PCB board is drilled.

[0027] A control switch 207 is fixedly installed at the bottom of the contact plate 206, a conical block 208 is fixedly installed at the bottom of the connecting rod 205, and a vacuum cleaner 209 is fixedly installed at the bottom of the workbench 1. The control switch 207 is electrically connected to the vacuum cleaner 209. The vacuum cleaner 209 will vacuum the position where the PCB board is drilled to prevent foreign matter generated during drilling from remaining on the placement plate 7.

[0028] The friction plate 204 is elastic, so that the friction plate 204 can be deformed, and the contact plate 206 contacts the spiral groove.

[0029] The limiting device includes a fixed disk 211, a circular disk 212, a positioning block 213, a pushing rod 214 and a limiting block 215. The fixed disk 211 is fixedly installed on the top of the fixing seat 5, the circular disk 212 is slidably installed on the arc surface of the fixed disk 211, the positioning block 213 is fixedly installed on the top of the circular disk 212, the pushing rod 214 is fixedly installed on the bottom of the annular plate 11, a slot is provided on the surface of the fixed disk 211, the limiting block 215 is slidably installed on the bottom of the fixed disk 211, a tension spring is arranged between the circular disk 212 and the fixed disk 211, and when the annular plate 11 moves downward, it will drive the pushing rod 214 to insert into the interior of the positioning block 213 to limit the placement plate 7, thereby preventing the PCB board from rotating when being drilled.

[0030] The interior of the fixed disk 211 is slidably penetrated by an insert plate 216, a swing plate 217 is rotatably installed on the top of the insert plate 216, a slider 218 is slidably installed on the top of the insert plate 216, a bolt 219 is installed on the internal thread of the insert plate 216, the bolt 219 is rotatably connected to the slider 218, a pressing rod 2110 is fixedly installed on the circumferential surface of the push rod 214, a fixed plate 2111 is fixedly installed on the top of the fixed disk 211 through an elastic telescopic rod, a torsion spring is arranged between the swing plate 217 and the insert plate 216, a No. 6 spring is arranged between the insert plate 216 and the fixed disk 211, the PCB board can be adjusted in an emergency, the limit block 215 and the insert plate 216 will perform multiple limits on the circular disk 212 to prevent the circular disk 212 from being arbitrarily controlled during work.

[0031] When the present embodiment is working, the circular plate 201 moves upward, which drives the sleeve plate 203 and the friction plate 204 to move upward. The friction plate 204 moves upward, which contacts the PCB. The PCB squeezes the friction plate 204 to deform and fit the bottom of the PCB. The sleeve plate 203 moves upward, which drives the connecting rod 205 to move upward. The connecting rod 205 moves upward, which drives the conical block 208 to move upward. The conical block 208 moves upward, which presses the control switch 207. The control switch 207 is pressed, which turns on the vacuum cleaner 209. When the drilling device 4 finishes drilling and moves upward, the roller 10 is released from pressing the annular plate 11. , the elastic force of the second spring will drive the inclined plate 12 to move to the side away from the circular plate 201, so that the reset spring will drive the circular plate 201 to move downward, and the circular plate 201 will drive the sleeve plate 203 to move downward when it moves downward, and the sleeve plate 203 will drive the bracket and the connecting rod 205 to move downward, and the connecting rod 205 will move downward to make the contact plate 206 move inside the spiral groove, so that when the contact plate 206 moves inside the spiral groove, it will push the connecting rod 205 and the sleeve plate 203 to rotate, and when the sleeve plate 203 rotates, it will drive the friction plate 204 to rotate, and when the friction plate 204 rotates, it will scrape off the burrs on the bottom of the PCB board; When the annular plate 11 moves downward, it will drive the push rod 214 to move downward. When the push rod 214 moves downward, it will be inserted between the positioning blocks 213, so that the positioning blocks 213 will limit the push rod 214 and the placement plate 7. When the push rod 214 moves downward, it will push the pressing rod 2110 to move downward. When the pressing rod 2110 moves downward, it will push the fixing plate 2111 to move downward. When the fixing plate 2111 moves downward, it will push the swing plate 217 and the plug plate 216 to move downward. When the plug plate 216 moves downward, it will block the limit block 215 from moving in the direction away from the slot. When the placement plate 7 needs to be adjusted to rotate during drilling, the bolt 219 is rotated to move in the direction away from the swing plate 217. When the bolt 219 moves, it will drive the slider 218 to move away from the swing plate 217. The plate 217 rotates in the direction of the slider 218, which makes it impossible for the slider 218 to support the swing plate 217, resulting in the torsion spring driving the swing plate 217 to rotate downward. When the swing plate 217 rotates downward, the distance between it and the fixed plate 2111 will increase, and the No. 6 spring will drive the plug plate 216 to move upward a certain distance and disengage from the limit block 215. The plug plate 216 will release the limit on the limit block 215, and push the limit block 215 to move in the direction away from the slot. The limit block 215 will release the limit on the circular disk 212 and push the circular disk 212 to move downward. When the circular disk 212 moves downward, it will drive the locking block 213 to move downward. The locking block 213 moves downward and disengages from the push rod 214, so that the locking block 213 will release the limit on the push rod 214 and the placement plate 7.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling device for PCB processing, comprising a workbench (1), characterized in that: A lifting device (2) is provided on the top of the workbench (1), a drilling device (4) is fixedly installed on the top of the lifting device (2), a fixing seat (5) is fixedly installed on the top of the workbench (1), a connecting block (6) is rotatably installed on the top of the fixing seat (5), a placement plate (7) is fixedly installed on the top of the connection block (6), and a positioning device is provided on the surface of the placement plate (7); The positioning device comprises a movable plate (8), an elastic telescopic frame (9), a roller (10), an annular plate (11), an inclined plate (12), a stop plate (13), a connecting plate (14), a transverse plate (15), a curved plate (16), a movable plate (17), an elastic telescopic plate (18) and a bifurcated plate (19), wherein the movable plate (8) is slidably mounted on the top of the placement plate (7), the elastic telescopic frame (9) is fixedly mounted on the surface of the drilling device (4), the roller (10) is rotatably mounted on the bottom of the elastic telescopic frame (9), the top of the placement plate (7) is provided with an annular groove, the annular plate (11) is slidably mounted inside the annular plate (11), and the inclined plate (12) slidably penetrates inside the placement plate (7). The top of the placement plate (7) is provided with a cavity, the connecting plate (14) is fixedly mounted on the bottom of the movable plate (8), the bottom of the connecting plate (14) is slidably mounted on the top of the inclined plate (12), the surface of the movable plate (8) is provided with a groove, the abutment plate (13) is slidably mounted inside the groove, the transverse plate (15) is fixedly mounted on a side of the abutment plate (13) close to the connecting plate (14), the bending plate (16) is slidably mounted on the bottom of the movable plate (8), the movable plate (17) is slidably mounted inside the cavity, the elastic telescopic plate (18) is fixedly mounted on the bottom of the movable plate (17), and the bifurcated plate (19) is fixedly mounted on a side of the connecting plate (14) close to the elastic telescopic plate (18); A scraping device for preventing burrs from being generated on the bottom of the PCB board is arranged inside the placement plate (7), and a limiting device is arranged at the bottom of the placement plate (7).

2. A drilling device for PCB processing according to claim 1, characterized in that: A No. 1 spring is arranged between the annular plate (11) and the annular groove, a No. 2 spring is arranged between the inclined plate (12) and the placement plate (7), a side of the inclined plate (12) close to the annular plate (11) is arranged as an inclined surface, a No. 1 spring is arranged between the connecting plate (14) and the inclined plate (12), a No. 3 spring is arranged between the abutment plate (13) and the groove, a No. 4 spring is arranged between the bending plate (16) and the movable plate (8), a side of the transverse plate (15) close to the bending plate (16) is arranged as an inclined surface, a No. 5 spring is arranged between the movable plate (17) and the cavity, and the bottom of the free end of the elastic telescopic plate (18) is arranged as an inclined surface.

3. A drilling device for PCB processing according to claim 2, characterized in that: A through hole is provided at the center of the placement plate (7), a circular plate (201) is slidably mounted inside the through hole, an inclined plate (202) is fixedly mounted at the bottom of the circular plate (201), a side of the circular plate (201) close to the inclined plate (202) is arranged in an arc shape, and a return spring is arranged between the circular plate (201) and the through hole.

4. A drilling device for PCB processing according to claim 3, characterized in that: The scraping device comprises a sleeve plate (203), a friction plate (204), a connecting rod (205) and a contact plate (206); the sleeve plate (203) is rotatably mounted inside the circular plate (201); the friction plate (204) is fixedly mounted on the top of the sleeve plate (203); the connecting rod (205) is fixedly mounted inside the sleeve plate (203) via a bracket; a spiral groove is formed at the bottom of the connecting rod (205); and the contact plate (206) is fixedly mounted inside the connecting block (6).

5. A drilling device for PCB processing according to claim 4, characterized in that: A control switch (207) is fixedly mounted on the bottom of the contact plate (206), a conical block (208) is fixedly mounted on the bottom of the connecting rod (205), a vacuum cleaner (209) is fixedly mounted on the bottom of the workbench (1), and the control switch (207) is electrically connected to the vacuum cleaner (209).

6. A drilling device for PCB processing according to claim 5, characterized in that: The friction plate (204) has elasticity, and the contact plate (206) is in contact with the spiral groove.

7. A drilling device for PCB processing according to claim 6, characterized in that: The limiting device comprises a fixed disk (211), a circular disk (212), a positioning block (213), a pushing rod (214) and a limiting block (215); the fixed disk (211) is fixedly mounted on the top of the fixed seat (5); the circular disk (212) is slidably mounted on the arc surface of the fixed disk (211); the positioning block (213) is fixedly mounted on the top of the circular disk (212); the pushing rod (214) is fixedly mounted on the bottom of the annular plate (11); a positioning groove is provided on the surface of the fixed disk (211); the limiting block (215) is slidably mounted on the bottom of the fixed disk (211); and a tension spring is provided between the circular disk (212) and the fixed disk (211).

8. A drilling device for PCB processing according to claim 7, characterized in that: The interior of the fixed disk (211) is slidably penetrated by an insert plate (216), the top of the insert plate (216) is rotatably mounted with a swing plate (217), the top of the insert plate (216) is slidably mounted with a slider (218), the internal thread of the insert plate (216) is mounted with a bolt (219), the bolt (219) is rotatably connected to the slider (218), a pressing rod (2110) is fixedly mounted on the circumferential surface of the push rod (214), a fixed plate (2111) is fixedly mounted on the top of the fixed disk (211) via an elastic telescopic rod, a torsion spring is arranged between the swing plate (217) and the insert plate (216), and a No. 6 spring is arranged between the insert plate (216) and the fixed disk (211).

9. The drilling process of a drilling device for PCB processing according to claim 8, characterized in that: The following steps are involved: Step 1: placing the PCB board on the abutment plate (13), driving the lifting device (2) to drive the drilling device (4) to move downward, and when the drilling device (4) moves downward, it drives the elastic telescopic frame (9) and the roller (10) to move downward; Step 2: When the roller (10) moves downward, it contacts the annular plate (11) and pushes the annular plate (11) to move downward. When the annular plate (11) moves downward, the inclined surface of the inclined plate (12) presses the inclined plate (12) to move in the direction of the movable plate (8); Step 3: When the inclined plate (12) moves, it drives the first spring and the connecting plate (14) to move. When the connecting plate (14) moves, it drives the third spring and the abutment plate (13) to move. When the abutment plate (13) moves, it clamps the PCB board. Step 4: The drilling device (4) drills holes in the PCB board while moving downward.

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