A double-station PCB drilling mechanism

Abstract

The present invention relates to the technical field of PCB drilling, and particularly to a double-station PCB drilling mechanism, which includes a drilling platform. The drilling platform is provided with a drilling device, and the drilling platform is provided with a drilling support plate for slidingly supporting the PCB board. The drilling support plate is provided with a drilling guide groove for the drilling device to pass through. The drilling device includes a pair of drilling modules. Each drilling module includes a drilling head located on one side of the PCB board. On the other side of the PCB board, there is a guide cylinder. The guide cylinder is provided with a guiding hole for the drilling head to guide into. The guiding hole of the guide cylinder is provided with a strip for the drilling head to pass through when drilling. The drilling device further includes a tool-changing mechanism. The tool-changing mechanism includes a tool-changing platform. The tool-changing platform includes a driving plate and a tool-changing disk. The driving plate and the tool-changing disk can move relative to each other in the Y-axis direction. The strip cooperates with the guide cylinder to press the hole position of the PCB board. When the drilling head passes through, the hole position will not be deformed. With the buffering of the strip, the generation of burrs can be reduced, and the drilling quality of the PCB board can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB drilling, and in particular to a double-station PCB drilling mechanism. Background Art

[0002] A PCB board is a provider of electrical connections for electronic components. Since it is produced by electronic printing technology, it is called a "printed" circuit board. In the production and processing of PCB boards, it is necessary to drill holes in them. Generally, fixtures are used to position and fix the PCB boards.

[0003] The existing clamping and positioning devices can only position and drill holes in PCB integrated circuit boards of the same specification. Different PCBs require different fixtures, which reduces work efficiency. Moreover, the existing fixtures cannot clamp the PCB from above and below. During drilling, the PCB is prone to move up and down, affecting the processing accuracy. In addition, the fixture force cannot be controlled, and it is easy to damage the PCB by clamping.

[0004] Among them, the invention with the application number CN202410370857.6 discloses a PCB drilling device and a PCB positioning structure. The PCB positioning structure includes a bottom plate and a second fixing frame. The first clamping component includes a disc, a first gear symmetrically installed on both sides of the disc and capable of moving back and forth, and a second gear symmetrically installed on both sides of the disc and capable of moving left and right. A first rack and a third rack are respectively meshed on the upper and lower sides of the first gear, and a second rack and a fourth rack are respectively meshed on the upper and lower sides of the second gear. A second round rod for horizontally clamping the PCB is installed above the first rack and the second rack; an air cylinder, and the air cylinder is inflated when the second rack and the fourth rack move; the second clamping component includes an air tank and a plurality of pneumatic telescopic rods, and a rubber wheel for clamping the PCB from above and below is installed above the pneumatic telescopic rods. When the air pressure in the air tank is greater than a threshold value, the pneumatic telescopic rods extend, and the rubber wheel descends to clamp the PCB from above and below.

[0005] In the existing drilling equipment, in the drilling processing procedure, since the PCB is formed by extrusion of multi-layer composite boards, a lot of burrs will be generated during direct drilling. If not removed, it will cause problems such as electroplating hole blockage, poor hole copper, and copper wire short circuit. Summary of the Invention

[0006] The purpose of the present invention is to provide a double-station PCB drilling mechanism in view of the deficiencies of the prior art.

[0007] To achieve the above purpose, the technical solution of the present invention is as follows:

[0008] A double-station PCB drilling mechanism includes a drilling platform. The drilling platform is provided with a drilling device. The drilling platform is provided with a drilling support plate for sliding support of the PCB board, and the drilling support plate is provided with a drilling guide groove.

[0009] The drilling device includes a pair of drilling modules. Each drilling module includes a drill head located on one side of the PCB board. On the other side of the PCB board, a guiding cylinder is provided. The guiding cylinder is provided with a guiding drilling hole for the drill head to guide and enter. The guiding drilling hole of the guiding cylinder is provided with a strip for the drill head to pass through when drilling. The drilling guiding groove allows the drill head to pass through;

[0010] The drilling device further includes a tool changing mechanism. The tool changing mechanism includes a tool changing platform. The tool changing platform includes a driving plate and a tool changing disk. The driving plate and the tool changing disk can move relative to each other in the Y-axis direction. A tool changing manipulator horizontally aligned with the tool changing disk is arranged beside the tool changing platform. The driving end of the tool changing manipulator is equipped with a tool changing module capable of moving in the X and Z axes. The drill head can move in the X, Y, and Z axes;

[0011] The drill head includes a tool barrel. A first guiding hole is axially formed in the tool barrel. A first drilling tool is slidably installed in the first guiding hole. The first guiding hole is equipped with a lifting jacking block. The top of the jacking block is connected to the bottom of the first drilling tool; a chamfered slope is formed at the top of the jacking block, and the chamfered slope is parallel to the bottom surface of the sliding cylinder; a connecting column is installed at the top of the jacking block, and a bottom insertion hole for the connecting column to insert is formed at the bottom of the first drilling tool; a hollow hole with a hollow structure is formed in the connecting column. An elastically retractable locking block and a locking groove for the locking block to slide radially are formed radially at the top of the connecting column. A locking groove for the locking block to embed is formed on the inner side wall of the bottom insertion hole. A tool changing cavity is formed inside the jacking block. The top of the tool changing cavity is connected to the hollow hole. The tool changing cavity is provided with a locking platform capable of lifting movement. A locking rod moving in the hollow hole is installed at the top of the locking platform. A locking slope slidably matched with the locking block is formed at the top of the locking rod; when the locking rod rises, the locking rod drives the locking block along the locking groove to cooperate with the locking groove of the bottom insertion hole through the locking slope to lock and install the first drilling tool; after the locking rod retracts, the locking block moves away from the locking groove of the bottom insertion hole under the elastic action to allow the tool changing mechanism to replace the first drilling tool.

[0012] Advantages of the present invention: The PCB board is located between the drilling head and the guiding cylinder, positioned and supported by the drilling support plate. The tape is attached to the guiding drilling of the guiding cylinder, and the PCB board is simultaneously attached to the tape. During drilling, after the drilling head passes through the PCB board, the drilling head simultaneously passes through the tape and enters the guiding drilling of the guiding cylinder. The tape cooperates with the guiding cylinder to press the hole positions of the PCB board. When the drilling head passes through, the hole positions will not be deformed. With the buffering of the tape, the generation of burrs can be reduced, and the drilling quality of the PCB board can be improved. When the tool needs to be changed, the driving plate and the tool changing disc can move relative to each other in the Y-axis direction, so that the tool changing disc can be exposed outside the driving plate, making the tool changing disc flush with the tool changing module and the drilling head in the X-axis direction. The tool changing manipulator replaces the drilling head with the tool changing disc through the tool changing module. During replacement, the movement path of the tool changing module is reduced, enabling rapid replacement, improving the replacement efficiency, and meeting the requirements of mass production. When the locking rod rises, the locking rod drives the locking block along the locking groove to cooperate with the anti-locking groove of the bottom insertion hole through the locking inclined surface to lock and install the first drilling tool. After the locking rod retracts, the locking block moves away from the anti-locking groove of the bottom insertion hole along the locking groove under the elastic action, for the tool changing mechanism to replace the first drilling tool. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the drilling platform.

[0014] Figure 2 It is a schematic structural diagram of the drilling device.

[0015] Figure 3 It is a schematic structural diagram of one of the drilling modules.

[0016] Figure 4 For Figure 3 The partial enlarged view in

[0017] Figure 5 It is a schematic structural diagram of the bottom driving seat.

[0018] Figure 6 It is a schematic structural diagram of the cooperation between the tool changing manipulator and the drilling device.

[0019] Figure 7 It is a schematic structural diagram of the cooperation between the tool changing manipulator and the drilling head.

[0020] Figure 8 It is a schematic structural diagram of the tool changing manipulator.

[0021] Figure 9 It is a schematic cross-sectional structural diagram of the drilling head, showing the extended state of the first drilling tool and the second drilling tool.

[0022] Figure 10 Schematic cross-sectional structural diagram of the drilling head, showing the retracted state of the first drilling tool and the second drilling tool.

[0023] Figure 11 It is a schematic diagram of the partial sectional structure of the drilling head.

[0024] Figure 12 It is an enlarged schematic diagram of the connection between the first drilling tool and the lifting block.

[0025] The reference numerals include:

[0026] 1 - Drilling platform,

[0027] 101 - Drilling support plate, 102 - Drilling guide groove, 103 - Pressing seat, 104 - Pressing block,

[0028] 10 - Top driving arm,

[0029] 11 - Winding mechanism, 12 - First winding reel, 13 - Second winding reel, 14 - Tape, 15 - Winding wheel, 16 - Height adjusting member, 17 - Drilling device,

[0030] 2 - Sliding table,

[0031] 20 - Guide sleeve, 21 - Through hole, 22 - Guide cylinder, 23 - Guide drilling, 24 - Arc surface, 25 - Bottom driving seat, 26 - Driving tool seat, 27 - Lifting power member, 28 - Guide rail plate, 29 - Guide shaft,

[0032] 3 - Tool changing platform,

[0033] 31 - Driving plate, 32 - Tool changing disc, 33 - Tool changing driving seat, 34 - Tool disc support plate,

[0034] 35 - Transverse telescopic cylinder, 36 - Positioning groove, 37 - Spare drill tool,

[0035] 4 - Tool changing manipulator,

[0036] 41 - Support column, 42 - First linear module, 43 - Second linear module, 44 - Tool changing module,

[0037] 45 - Z - axis mounting plate,

[0038] 5 - Bottom support seat,

[0039] 51 - X - axis moving seat, 52 - Y - axis moving seat, 53 - Transverse fixing plate, 54 - Drilling head,

[0040] 55 - X - RAY camera,

[0041] 6 - Tool cylinder,

[0042] 61 - Bottom guide hole, 62 - Lifting piston rod, 63 - Lifting block, 64 - Chamfered slope,

[0043] 65 - First guiding hole, 66 - Second guiding hole, 67 - First drilling tool, 68 - Second drilling tool,

[0044] 7 - Sliding cylinder,

[0045] 71 - Concave movable groove, 72 - First groove wall, 73 - Second groove wall, 74 - Hinge block, 75 - Vertical groove

[0046] 76 - Transverse positioning rod, 77 - First positioning hole, 78 - Second positioning hole, 79 - Transverse telescopic cylinder

[0047] 8 - Tool change chamber,

[0048] 81 - Connecting column, 82 - Hollow hole, 83 - Locking rod, 84 - Locking inclined plane, 85 - Mounting part,

[0049] 86 - Drilling part, 87 - Bottom insertion hole, 88 - Anti - lock groove, 89 - Locking block, 90 - Locking groove. Detailed implementation mode

[0050] The present invention will be described in detail below with reference to the accompanying drawings.

[0051] As Figures 1-12 shown, a double - station PCB drilling mechanism includes a drilling platform 1. The drilling platform 1 is provided with a drilling device 17. The drilling platform 1 is provided with a drilling support plate 101 for sliding support of the PCB board, and the drilling support plate 101 is provided with a drilling guiding groove 102.

[0052] Above the drilling support plate 101, there is a pressing mechanism for positioning the PCB board. The pressing mechanism includes a pair of pressing seats 103 arranged at intervals. The pressing seats 103 are installed with longitudinally arranged pressing blocks 104, and the pressing blocks 104 can longitudinally move to press the PCB board on the drilling support plate 101.

[0053] Preferably, the pressing seats 103 are installed with lifting cylinders. The driving ends of the lifting cylinders are connected to the pressing blocks 104. When the PCB board moves to the drilling support plate 101 in place, the lifting cylinders drive the pressing blocks 104 to press down to prevent the PCB board from shifting laterally.

[0054] The drilling device 17 includes a pair of drilling modules, and the two drilling modules can simultaneously perform drilling operations on the PCB board, further improving the efficiency.

[0055] The drilling module includes a drilling head 54 on one side of the PCB board. On the other side of the PCB board, there is a guiding cylinder 22. The guiding cylinder 22 is provided with a guiding drilling hole 23 for the drilling head 54 to guide into. The guiding drilling hole 23 of the guiding cylinder 22 is provided with a strip 14 for the drilling head 54 to pass through during drilling. The drilling head 54 can pass through the drilling guiding groove 102 to contact the PCB board and drill the PCB board.

[0056] The PCB board is located between the drill head 54 and the guide cylinder 22. The strip 14 is attached to the guiding drill hole 23 of the guide cylinder 22, and the PCB board is simultaneously attached to the strip 14. During drilling, after the drill head 54 passes through the PCB board, the drill head 54 simultaneously passes through the strip 14 and enters the guiding drill hole 23 of the guide cylinder 22. The strip 14 cooperates with the guide cylinder 22 to be able to press the hole positions of the PCB board. When the drill head 54 passes through, the hole positions will not be deformed. With the buffering of the strip 14, the generation of burrs can be reduced, and the drilling quality of the PCB board can be improved.

[0057] The strip 14 can prevent burrs from being generated at the hole positions of the PCB board.

[0058] The drill head 54 and the guide cylinder 22 are both longitudinally coaxially aligned. Among them, the drill head 54 is located below the guide cylinder 22. During drilling, the drill head 54 passes through the PCB board from bottom to top. The strip 14 cooperates with the guide cylinder 22 to be able to press the hole positions at the top of the PCB board. When the drill head 54 passes through, the hole positions will not be deformed. With the buffering of the strip 14, the generation of burrs can be reduced, and the drilling quality of the PCB board can be improved.

[0059] Preferably, according to requirements, the positions of the drill head 54 and the guide cylinder 22 can be interchanged. During drilling, the drill head 54 passes through the PCB board from top to bottom; or the drill head 54 and the guide cylinder 22 can be arranged horizontally, and the drill head 54 drills the PCB board by passing through the PCB board from left to right or from right to left.

[0060] Specifically, the drilling device 17 further includes a winding mechanism 11 for installing the strip 14. The winding mechanism 11 includes a first coil reel 12 and a second coil reel 13. The strip 14 intermittently moves from the first coil reel 12 to the second coil reel 13. During punching, the second coil reel 13 rotates to wind up the strip 14. Each time a punch is made, the strip 14 moves a distance greater than the diameter of one hole, so that after the drill head 54 passes through the PCB board, it can contact the strip 14. By attaching the strip 14 to the hole positions, burrs can be prevented from being generated at the hole positions of the PCB board.

[0061] The drilling device 17 further includes a top driving arm 10 for installing the guide cylinder 22. The top driving arm 10 is equipped with a height adjusting member 16 for adjusting the height of the guide cylinder 22. The height of the guide cylinder 22 can be adjusted through the height adjusting member 16 to facilitate adapting to PCB boards of different thicknesses.

[0062] Preferably, the height adjusting member 16 is a longitudinally arranged lifting cylinder, and the guide cylinder 22 is installed at the driving end of the lifting cylinder.

[0063] Furthermore, the winding mechanism 11 also includes a plurality of winding wheels 15 installed on the top driving arm 10, and the top driving arm 10 is equipped with a sliding table 2 flush with the bottom surface of the guide cylinder 22, wherein one of the winding wheels 15 is installed on one side of the sliding table 2, and the material belt 14 can move along the sliding table 2, and under the transmission of the winding wheel 15, the material belt 14 moves along the winding wheel 15 and the sliding table 2 and can pass through the guide cylinder 22.

[0064] The sliding table 2 is formed with a through hole 21 coaxially aligned with the guide cylinder 22. The guide cylinder 22 is installed in the through hole 21 so that the bottom of the guide cylinder 22 is flush with the bottom of the sliding table 2. One of the winding wheels 15 is installed on the left side of the sliding table 2. The right side of the sliding table 2 is formed with an arc surface 24 for the feed belt 14 to fit through. The arc surface 24 can prevent the feed belt 14 from breaking when passing through the sliding table 2. When the feed belt 14 moves in contact with the bottom of the sliding table 2, it will also slide and fit with the guide cylinder 22, ensuring that the feed belt 14 and the guide drill hole 23 of the guide cylinder 22 can contact after the drilling head 54 drills.

[0065] A longitudinally arranged bottom drive seat 25 is installed at the bottom of the top driving arm 10, and the second material reel 13 is installed on the bottom drive seat 25. One or more winding wheels 15 are installed beside the second material reel 13. The material strip 14 after punching enters the second material reel 13 along the remaining winding wheels 15. The second material reel 13 rotates and reels under the drive of the servo motor. The servo motor can drive the second material reel 13 to rotate intermittently to ensure the utilization rate of the material strip 14.

[0066] The drilling device 17 also includes a bottom driving seat 25 for installing a drilling head 54. The bottom driving seat 25 is provided with a driving tool seat 26 for installing the drilling head 54 and a lifting power member 27 for driving the drilling head 54 to move longitudinally. The lifting power member 27 is a linear module or a lifting cylinder. Driven by the lifting power member 27, the drilling head 54 can move in the vertical direction to drill holes in the PCB located above.

[0067] Preferably, the bottom driving seat 25 is also provided with a guiding structure for guiding the driving knife seat 26 to move, and the guiding structure includes a longitudinally arranged guide rail plate 28, and the driving knife seat 26 moves longitudinally along the guide rail plate 28. The driving knife seat 26 is installed with a guide sleeve 20, and the bottom driving seat 25 is provided with a guide shaft 29 coaxially aligned with the guide sleeve 20; when the driving knife seat 26 moves up and down, it will move longitudinally along the guide rail plate 28 to improve the stability of its longitudinal movement. In addition, the guide sleeve 20 installed on the driving knife seat 26 will slide with the guide shaft 29 to further improve the stability of its longitudinal movement.

[0068] Further, a photographing mechanism is also provided on the bottom driving seat 25. The photographing mechanism includes an X-RAY camera 55. The X-RAY camera 55 is longitudinally installed on the bottom driving seat 25. After the PCB board is placed on the drilling platform, the position to be drilled can be photographed and positioned by the X-RAY camera 55 to determine the drilling position. Since both the X-RAY camera 55 and the drill bit are installed on the bottom driving seat 25 and the distance between them is a fixed value, after the X-RAY camera 55 determines the drilling position, the position where the drill bit needs to move can be calculated.

[0069] Subsequently, after the PCB board is positioned by the pressing mechanism, the drill bit of the drilling device 17 can drill at the determined position.

[0070] The drilling device 17 further includes a tool changing mechanism. The tool changing mechanism includes a tool platform 1. The tool changing platform 3 includes a driving plate 31 and a tool changing disk 32. The driving plate 31 and the tool changing disk 32 can move relative to each other in the Y-axis direction.

[0071] A tool changing manipulator 4 horizontally aligned with the tool changing disk 32 is arranged beside the tool changing platform 3. The driving end of the tool changing manipulator 4 is equipped with a tool changing module 44 capable of moving in the X and Z axes, and the drill bit 54 can move in the X and Y axes.

[0072] When tool changing is required, the driving plate 31 and the tool changing disk 32 can move relative to each other in the Y-axis direction, so that the tool changing disk 32 can be exposed outward from the driving plate 31, making the tool changing disk 32 flush with the tool changing module 44 and the drill bit 54 in the X-axis direction. The tool changing manipulator 4 replaces the drill bit 54 with the tool changing module 44 to the tool changing disk 32. During replacement, the movement path of the tool changing module 44 is reduced, enabling rapid replacement, improving the replacement efficiency, and meeting the requirements of mass production.

[0073] In one embodiment, the tool changing platform 3 further includes a tool changing driving seat 33. Both the driving plate 31 and the tool changing disk 32 are installed on the tool changing driving seat 33. The tool changing driving seat 33 is provided with a tool disk driving member for driving the driving plate 31 to move in the Y-axis direction. Driven by the tool disk driving member, the driving plate 31 can move in the Y-axis direction. When the driving plate 31 moves away from the tool changing disk 32, the driving plate 31 will not block the tool changing disk 32 at this time, enabling the tool changing disk 32 to be exposed and aligned with the tool changing module 44 of the tool changing manipulator 4 in the X-axis direction, facilitating rapid tool change.

[0074] In one embodiment, a tool changing drive base 33 is laterally formed with a tool disc support plate 34 for mounting a tool changing disc 32. The tool disc support plate 34 is located below a drive plate 31. The tool disc drive member includes a laterally telescopic cylinder 35 arranged along the Y axis. The laterally telescopic cylinder 35 is mounted on the tool disc support plate 34, and the drive end of the laterally telescopic cylinder 35 is connected to the tool changing disc 32. When the laterally telescopic cylinder 35 makes an extending movement, the tool disc support plate 34 remains stationary, and the tool changing disc 32 moves away from the drive plate 31 until the drive plate 31 no longer blocks the tool changing disc 32, so that the tool changing disc 32 can be exposed until it moves to be aligned with a tool changing module 44 of a tool changing manipulator 4 in the X-axis direction, facilitating rapid tool change.

[0075] The tool changing disc 32 is formed with a plurality of positioning grooves 46, and spare drill bits 37 are placed in the positioning grooves 46. The sizes of more than one of the spare drill bits 37 are different, and the corresponding-sized spare drill bits 37 can be picked up for drilling according to requirements.

[0076] When drilling a PCB board, some PCB boards need to drill holes with multiple different hole diameters. Most drilling equipment uses multiple cylinders to separately drive different drilling tools to perform drilling, which requires arranging a large number of pneumatic structures and affects the space occupation.

[0077] The drilling head includes a cutter barrel 6. An axial first guiding hole 65 is formed in the cutter barrel 6. A first drilling cutter 67 is slidably installed in the first guiding hole 65. A pair of second guiding holes 66 are obliquely formed in the cutter barrel 6. The second guiding holes 66 are located outside the first guiding hole 65. The bottom of the second guiding hole 66 communicates with the first guiding hole 65. A sliding cylinder 7 is slidably installed in the second guiding hole 66. A lifting jacking block 63 is installed in the first guiding hole 65. The top of the jacking block 63 is connected to the bottom of the first drilling cutter 67. A second drilling cutter 68 capable of longitudinal swinging is installed at the top of the sliding cylinder 7. The cutter barrel 6 is further provided with a positioning assembly for keeping the extended second drilling cutter 68 in a vertical posture. The positioning assembly includes a horizontally arranged horizontal positioning rod 76. A first positioning hole 77 is formed through the second drilling cutter 68. A second positioning hole 78 coaxially aligned with the horizontal positioning rod 76 is horizontally formed in the cutter barrel 6. The jacking block 63 rises along the first guiding hole 65, so that the first drilling cutter 67 projects outwards along the first guiding hole 65. At the same time, under the action of the jacking block 63, the sliding cylinder 7 located in the second guiding hole 66 can rise along the second guiding hole 66. The second drilling cutter 68 installed at the top of the sliding cylinder 7 changes from an inclined posture to a vertical posture. After the position where the cutter needs to be raised, the horizontal positioning rod 76 is coaxially aligned with the first positioning hole 77 and the second positioning hole 78. The horizontal positioning rod 76 sequentially passes through the first positioning hole 77 and the second positioning hole 78 to position the second drilling cutter 68, preventing the second drilling cutter 68 from swinging during drilling and keeping a vertical posture for drilling. Multiple second drilling cutters 68 cooperate with the first drilling cutter 67 to simultaneously drill multiple positions on the PCB board. Only one jacking block 63 can drive the movement of multiple drilling cutters to achieve drilling. The layout of pneumatic equipment and pneumatic structures is reduced. In addition, since the driving tool holder 26 can drive the drilling head to lift up and down, at the same time, for the multiple drilling cutters of the drilling head, according to the depth requirement of drilling, the height of the jacking block 63 rising is different, the height of the drilling cutter projecting out is also different, and the depth of drilling is also different.

[0078] Further, an inner concave movable groove 71 is formed at the top of the sliding cylinder 7. An articulated block 74 is installed in the inner concave movable groove 71. The inner end of the second drilling tool 68 is rotatably connected to the articulated block 74. The inner concave movable groove 71 allows the second drilling tool 68 to swing to a vertical posture. A vertical groove 75 is formed by inner concavity at the top of the tool cylinder 6. The bottom of the vertical groove 75 communicates with the second guiding hole 66. The inner concave movable groove 71 includes a first groove wall 72 arranged vertically and a second groove wall 73 that forms an acute angle with the first groove wall 72. The second groove wall 73 is parallel to the sliding cylinder 7. When the lifting block 63 rises along the first guiding hole 65, the sliding cylinder 7 can rise along the second guiding hole 66. At this time, the second drilling tool 68 hinged to the outer end of the sliding cylinder 7, under the action of the vertical groove 75, continuously changes from an inclined posture to a vertical posture. The inner end of the second drilling tool 68 swings between the first groove wall 72 and the second groove wall 73 through the articulated block 74. After becoming vertical, the inner side edge of the second drilling tool 68 fits against the first groove wall 72, thereby maintaining the vertical posture. After the lifting block 63 retracts, the first drilling tool 67 retracts along the first guiding hole 65, and the sliding cylinder 7 retracts along the second guiding hole 66 under the action of gravity. At this time, both the first drilling tool 67 and the second drilling tool 68 retract and will not be exposed outward, effectively protecting the first drilling tool 67 and the second drilling tool 68.

[0079] The bottom of the tool cylinder 6 is connected to the driving tool seat 26. The driving tool seat 26 is formed with a bottom guiding hole 61 coaxially aligned with the first guiding hole 65. A lifting piston rod 62 capable of lifting movement is installed in the bottom guiding hole 61. The top of the lifting piston rod 62 is connected to the lifting block 63. Under the action of the lifting cylinder in the bottom guiding hole 61, the lifting piston rod 62 performs axial lifting movement, thereby driving the lifting block 63 to perform lifting movement, and can drive the first drilling tool 67 and the second drilling tool 68 to rise or hide.

[0080] Preferably, a chamfered inclined surface 64 is formed on the top of the jacking block 63. The chamfered inclined surface 64 is parallel to the bottom surface of the sliding cylinder 7. When the jacking block 63 rises along the first guiding hole 65, the chamfered inclined surface 64 on the top of the jacking block 63 is in sliding fit with the inclined surface of the bottom surface of the sliding cylinder 7, driving the sliding cylinder 7 to rise along the second guiding hole 66; the outer diameter of the second drilling tool 68 is smaller than that of the first drilling tool 67, and a guiding reaming hole for guiding the lateral positioning rod 76 to pass through and coaxially aligned with the first positioning hole 77 is formed on the outer wall of the second drilling tool 68; a laterally arranged positioning telescopic cylinder 79 is arranged on the outer wall of the tool cylinder 6. The driving end of the positioning telescopic cylinder 79 is connected to the lateral positioning rod 76. Under the action of the vertical groove 75, the second drilling tool 68 at the outer end of the sliding cylinder 7 continuously changes from an inclined posture to a vertical posture. After the second drilling tool 68 rises to the in-place position, the lateral positioning rod 76 is coaxially aligned with the first positioning hole 77 and the second positioning hole 78. The lateral positioning rod 76 sequentially passes through the first positioning hole 77 and the second positioning hole 78 to position the second drilling tool 68, preventing the second drilling tool 68 from swinging during drilling and maintaining a vertical posture for drilling.

[0081] The tool changing manipulator 4 includes a longitudinally arranged support column 41. A first linear module 42 arranged in the Z-axis direction is installed on the support column 41. The driving end of the first linear module 42 is installed with a second linear module 43 arranged in the X-axis direction. The tool changing module 44 is longitudinally installed at the driving end of the second linear module 43. Driven by the first linear module 42 and the second linear module 43, the tool changing module 44 can move in the X-axis and Z-axis directions. The tool changing module 44 moves above the tool changing disc 32 and is coaxially aligned with the spare drill tool 37 to be replaced, and then approaches the spare drill tool 37 and is replaced into the corresponding drill bit hole for installation.

[0082] Preferably, a Z-axis mounting plate 45 is installed on the top of the support column 41, and the first linear module 42 is installed on the Z-axis mounting plate 45 to ensure the stable installation of the first linear module 42 in the Z-axis direction.

[0083] It should be noted that the tool changing module 44 adsorbs the spare drill tool 37 or the drill head 54 by adsorption and then replaces it onto the tool changing disc 32, which is common knowledge in the field of tool changing. The specific structure of the tool changing module 44 will not be elaborated here.

[0084] The drilling device 17 further includes a bottom support base 5 for mounting the drill head 54. The bottom support base 5 is slidably mounted with an X-axis moving base 51 along the X-axis. The X-axis moving base 51 is slidably mounted with a Y-axis moving base 52. The bottom driving base 25 is mounted on the Y-axis moving base 52. The Y-axis moving base 52 is provided with a horizontally arranged horizontal fixing plate 53. The horizontal fixing plate 53 is perpendicularly connected to the bottom driving base 25. The tool changing driving base 33 is also mounted on the Y-axis moving base 52. The tool changing driving base 33 is connected to the top driving arm 10, so that the guiding cylinder 20 mounted on the top driving arm 10 can be coaxially aligned with the drill head 54 of the bottom driving base 25.

[0085] With the cooperation of the X-axis moving base 51 and the Y-axis moving base 52, the bottom driving base 25 can move in the X and Y directions, approaching or moving away from the tool changing disc 32, so that the drill head 54 can be aligned with the tool changing disc 32 and the tool changing module 44 of the tool changing manipulator 4 in the X-axis direction, for the tool changing module 44 to quickly change tools.

[0086] Preferably, the bottom support base 5 uses a linear module to drive the X-axis moving base 51 to move along the X-axis on the bottom support base 5; the X-axis moving base 51 uses a linear module to drive the Y-axis moving base 52 to move in the Y-axis direction.

[0087] With the cooperation of the X-axis moving base 51 and the Y-axis moving base 52, the guiding cylinder 20 mounted on the top driving arm 10 can be coaxially aligned with the drill head 54 of the bottom driving base 25. When tool changing is required, the tool changing disc 32 mounted on the tool disc support plate 34 can extend, so that the tool changing disc 32 is respectively aligned with the tool changing module 44 of the tool changing manipulator 4 in the X-axis direction.

[0088] Preferably, a bottom insertion hole 87 for inserting the connecting column 81 is formed at the bottom of the first drilling tool 67; the connecting column 81 is formed with a hollow hole 82 with a hollow structure. The top of the connecting column 81 is radially formed with an elastically retractable locking block 89 and a locking groove 90 for the radial sliding of the locking block 89. The inner side wall of the bottom insertion hole 87 is formed with a locking stop groove 88 for the locking block 89 to be embedded. A tool changing cavity 8 is formed inside the lifting block 63. The top of the tool changing cavity 8 is connected to the hollow hole 82. The tool changing cavity 8 is provided with a locking platform capable of lifting movement. The top of the locking platform is mounted with a locking rod 83 that moves in the hollow hole 82. The top of the locking rod 83 is formed with a locking inclined surface 84 that slidably cooperates with the locking block 89; when the locking rod 83 rises, the locking rod 83 drives the locking block 89 along the locking groove 90 to cooperate with the locking stop groove 88 of the bottom insertion hole 87 to lock and mount the first drilling tool 67; when the locking rod 83 retracts, the locking block 89 moves away from the locking stop groove 88 of the bottom insertion hole 87 under the elastic action of the compression spring, for the tool changing mechanism to replace the first drilling tool 67.

[0089] A lifting cylinder is arranged in the tool change cavity 8 and can drive the locking rod 83 to move up and down along the hollow hole 82 of the locking table. Before drilling, the lifting cylinder can drive the locking rod 83 to rise along the hollow hole 82 of the locking table. The locking rod 83 is in sliding fit with the locking block 89 of the locking groove 90 through the locking inclined surface 84, driving the locking block 89 to move radially outwards and embed into the anti-lock groove 88 of the first drilling tool 67, so as to lock the first drilling tool 67 for drilling. When the first drilling tool 67 needs to be changed, the lifting cylinder drives the locking rod 83 to descend and retract. After the locking rod 83 retracts, the locking block 89 moves away from the anti-lock groove 88 of the bottom insertion hole 87 along the locking groove 90 under the action of elasticity. At this time, the first drill block is in a movable state, and the tool change mechanism can replace the first drilling tool 67.

[0090] It should be noted that the first drilling tool 67 is composed of an installation part 85 and a drilling part 86 formed on the top of the installation part 85. Among the spare drill tools 37, the outer diameters of each installation part 85 are the same, and the outer diameters of the drilling parts 86 are different, which is convenient for each spare drill tool 37 to be installed in the first guiding hole 65 of the tool cylinder 6 after replacement.

[0091] In summary, it can be seen that the present invention has the excellent characteristics described above, so that it can enhance the efficiency never before achieved in the prior art and has practicality in use, becoming a product with extremely high practical value. The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A dual-station PCB drilling mechanism, comprising a drilling platform, wherein the drilling platform is provided with a drilling device, characterized in that: The drilling platform is provided with a drilling support plate for slidingly supporting the PCB board, and the drilling support plate is provided with a drilling guide groove; The drilling device comprises a pair of drilling modules, the drilling module comprises a drilling head located on one side of the PCB board, a guide cylinder is arranged on the other side of the PCB board, the guide cylinder is provided with a guide drilling hole for the drilling head to guide into, the guide drilling hole of the guide cylinder is provided with a material strip for the drilling head to pass through when drilling, and the drilling guide groove is for the drilling head to pass through; The drilling device also includes a tool changing mechanism, which includes a tool changing platform, which includes a driving plate and a tool changing disc, and the driving plate and the tool changing disc can move relative to each other in the Y-axis direction; a tool changing manipulator is arranged on the side of the tool changing platform and is laterally aligned with the tool changing disc, and a tool changing module that can move in the X and Z axes is installed on the driving end of the tool changing manipulator, and the drilling head can move in the X, Y and Z axes; The drilling head comprises a knife barrel, a first guide hole is formed axially on the knife barrel, a first drilling knife is slidably installed in the first guide hole, a lifting block capable of lifting and lowering is installed in the first guide hole, and the top of the lifting block is connected to the bottom of the first drilling knife; a chamfered inclined surface is formed on the top of the lifting block, and the chamfered inclined surface is parallel to the bottom surface of the sliding cylinder; a connecting column is installed on the top of the lifting block, and a bottom insertion hole for inserting the connecting column is formed at the bottom of the first drilling knife; a hollow hole with a hollow structure is formed on the connecting column, an elastically retracted locking block and a locking groove for radial sliding of the locking block are radially formed on the top of the connecting column, and a bottom insertion hole is formed on the inner side wall thereof. A locking groove is provided for the locking block to be embedded, a tool changing cavity is formed inside the lifting block, the top of the tool changing cavity is connected to the hollow hole, the tool changing cavity is provided with a locking platform that can move up and down, a locking rod that is movable in the hollow hole is installed on the top of the locking platform, and a locking inclined surface that slides with the locking block is formed on the top of the locking rod; when the locking rod is raised, the locking rod drives the locking block along the locking groove through the locking inclined surface to cooperate with the locking groove of the bottom insertion hole to lock and install the first drilling tool; after the locking rod retracts, the locking block moves along the locking groove away from the locking groove of the bottom insertion hole under the action of elasticity, so that the tool changing mechanism can replace the first drilling tool.

2. A double-station PCB drilling mechanism according to claim 1, characterized in that: The drilling head and the guide cylinder are both longitudinally coaxially aligned, wherein the drilling head is located below the guide cylinder.

3. A double-station PCB drilling mechanism according to claim 2, characterized in that: The drilling device further comprises a winding mechanism for installing the material tape, the winding mechanism comprises a first material winding tray and a second material winding tray, and the material tape intermittently moves from the first material winding tray to the second material winding tray.

4. A dual-station PCB drilling mechanism according to claim 3, characterized in that: The drilling device also includes a top driving arm for installing the guide cylinder, and the top driving arm is equipped with a height adjusting member for adjusting the height of the guide cylinder; the winding mechanism also includes a plurality of winding wheels installed on the top driving arm, and the top driving arm is equipped with a sliding table flush with the bottom surface of the guide cylinder, one of the winding wheels is installed on one side of the sliding table, and the material belt can move along the sliding table; the sliding table is formed with a through hole coaxially aligned with the guide cylinder, one of the winding wheels is installed on the left side of the sliding table, and the right side of the sliding table is formed with an arc surface for the material supply belt to fit through; a bottom driving seat is installed at the bottom of the top driving arm, and a second winding tray is installed on the bottom driving seat, and one or more of the winding wheels are installed beside the second winding tray.

5. A double-station PCB drilling mechanism according to claim 4, characterized in that: The drilling device includes a bottom driving seat for mounting a drilling head, the bottom driving seat can move in the X and Y directions, the drilling device also includes a bottom supporting seat, the bottom supporting seat is slidably mounted with an X-axis moving seat along the X-axis, the X-axis moving seat is slidably mounted with a Y-axis moving seat, and the bottom driving seat is mounted on the Y-axis moving seat.

6. A double-station PCB drilling mechanism according to claim 5, characterized in that: The bottom driving seat is provided with a driving tool seat for installing a drilling head and a lifting power part for driving the drilling head to move longitudinally; the bottom driving seat is also provided with a guide structure for guiding the driving tool seat to move, the guide structure includes a longitudinally arranged guide rail plate, the driving tool seat moves longitudinally along the guide rail plate, the driving tool seat is installed with a guide sleeve, and the bottom driving seat is provided with a guide shaft coaxially aligned with the guide sleeve; the bottom driving seat is also provided with a photographing mechanism, the photographing mechanism includes an X-RAY camera, and the X-RAY camera is longitudinally installed on the bottom driving seat.

7. A double-station PCB drilling mechanism according to claim 6, characterized in that: The tool changing platform also includes a tool changing drive seat, and the drive plate and the tool changing disc are both arranged on the tool changing drive seat, and the tool changing drive seat is provided with a tool disc drive component for driving the tool changing drive seat to move in the Y-axis direction; the tool changing drive seat is laterally formed with a tool disc support plate for installing the tool changing disc, and the tool disc support plate is located below the drive plate, and the tool disc drive component includes a transverse telescopic cylinder arranged along the Y-axis, and the drive end of the transverse telescopic cylinder is connected to the drive plate.

8. The double-station PCB drilling mechanism according to claim 5, characterized in that: The knife barrel is also obliquely formed with a pair of second guide holes, the second guide holes are located outside the first guide holes, the bottom of the second guide holes is connected to the first guide holes, the second guide holes are slidably installed with a sliding cylinder, and the top of the sliding cylinder is installed with a second drilling tool that can swing longitudinally; the knife barrel is also provided with a positioning component for keeping the extended second drilling tool in a vertical posture, the positioning component includes a transversely arranged transverse positioning rod, the second drilling tool is penetrated by a first positioning hole, and the knife barrel is transversely formed with a second positioning hole coaxially aligned with the transverse positioning rod.

9. A dual-station PCB drilling mechanism according to claim 8, characterized in that: The top of the sliding cylinder is formed with an inwardly concave movable groove, and a hinge block is installed in the inwardly concave movable groove. The inner end of the second drilling tool is rotatably connected to the hinge block, and the inwardly concave movable groove can allow the second drilling tool to swing to a vertical posture; a vertical groove is concavely formed at the top of the tool cylinder, and the bottom of the vertical groove is connected to the second guide hole; the inwardly concave movable groove includes a first groove wall arranged vertically and a second groove wall forming an acute angle with the first groove wall, and the second groove wall is parallel to the sliding cylinder.

10. A double-station PCB drilling mechanism according to claim 9, characterized in that: The outer diameter of the second drilling tool is smaller than that of the first drilling tool, and the outer wall of the second drilling tool is formed with a guide expansion hole coaxially aligned with the first positioning hole for the lateral positioning rod to pass through; the outer wall of the knife barrel is provided with a transversely arranged positioning telescopic cylinder, and the driving end of the positioning telescopic cylinder is connected to the lateral positioning rod; the bottom of the knife barrel is connected to the driving knife seat, and the driving knife seat is formed with a bottom guide hole coaxially aligned with the first guide hole, and a lifting piston rod capable of lifting and lowering movement is installed in the bottom guide hole, and the top of the lifting piston rod is connected to the lifting block.

Images