Double-station PCB drilling mechanism

Abstract

The invention relates to the technical field of PCB drilling, in particular to a double-station PCB drilling mechanism which comprises a drilling platform, the drilling platform is provided with a drilling device, the drilling platform is provided with a drilling supporting plate for supporting a PCB in a sliding mode, and the drilling supporting plate is provided with a drilling guide groove for the drilling device to penetrate through. The drilling device comprises a pair of drilling modules, each drilling module comprises a drilling head located on one side of the PCB, a guide cylinder is arranged on the other side of the PCB, the guide cylinder is provided with a guide drilling hole allowing the drilling head to enter in a guiding mode, the guide drilling hole of the guide cylinder is provided with a material belt allowing the drilling head to penetrate through during drilling, and the drilling device further comprises a tool changing mechanism. The tool changing mechanism comprises a tool changing platform, the tool changing platform comprises a driving plate and a tool changing disc, and the driving plate and the tool changing disc can relatively move in the Y-axis direction; the material belt is matched with the guide cylinder to press the hole site of the PCB, when the drilling head penetrates through the hole site, the hole site does not deform, burrs can be reduced in cooperation with buffering of the material belt, and the drilling quality of the PCB is improved.

Description

Technical Field

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

[0002] PCB board is the provider of electrical connections for electronic components. Because it is made by electronic printing, it is called "printed" circuit board. In the production and processing of PCB board, it needs to be drilled. Generally, a fixture is used to position and fix the PCB board;

[0003] The existing clamping and positioning device can only perform positioning and drilling on PCB integrated circuit boards of the same specifications. Different PCBs need to use different clamps, which reduces work efficiency. In addition, the existing clamps cannot clamp them up and down. When drilling, they are prone to moving up and down, affecting their processing accuracy. In addition, the clamp strength cannot be controlled, which can easily damage the PCB.

[0004] Among them, the invention with application number CN202410370857.6 discloses a PCB drilling device and a PCB positioning structure, wherein the PCB positioning structure includes a base plate and a second fixed frame, the first clamping assembly includes a disc and a first gear symmetrically installed on both sides of the disc and can move forward and backward, and a second gear symmetrically installed on both sides of the disc and can move left and right, the first gear is respectively meshed with a first rack and a third rack on the upper and lower sides, the second gear is respectively meshed with a second rack and a fourth rack on the upper and lower sides, a second round rod for horizontally clamping the PCB is installed above the first rack and the second rack; an air cylinder, the second rack and the fourth rack are inflated when the air cylinder moves; the second clamping assembly includes an air tank and several pneumatic telescopic rods, and a rubber wheel for clamping the PCB up and down is installed above the pneumatic telescopic rod. When the air pressure in the air tank is greater than the threshold, the pneumatic telescopic rod extends, the rubber wheel descends, and the PCB is clamped up and down.

[0005] In the existing drilling equipment, during the drilling process, since the PCB is formed by extrusion of a multi-layer composite board, a lot of burrs will be generated when drilling directly. If they are not handled, 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 to address the deficiencies of the prior art.

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

[0008] A double-station PCB drilling mechanism, comprising 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 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;

[0010] 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;

[0011] 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.

[0012] The beneficial effects of the present invention are as follows: the PCB board is located between the drilling head and the guide cylinder, and is positioned and supported by the drilling support plate. The material strip is attached to the guide drilling hole of the guide cylinder, and the PCB board is attached to the material strip at the same time. When drilling, after the drilling head passes through the PCB board, the drilling head simultaneously passes through the material strip and enters the guide drilling hole of the guide cylinder. The material 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. The buffering of the material strip can reduce the generation of burrs and improve the drilling quality of the PCB board. When the tool needs to be changed, the driving plate and the tool change disc can move relative to each other in the Y-axis direction, so that the tool change disc can The driving plate is exposed outward so that the tool changing disc is flush with the tool changing module and the drilling head in the X-axis direction respectively, and the tool changing robot replaces the drilling head to the tool changing disc through the tool changing module; the movement path of the tool changing module is reduced during replacement, and it can be replaced quickly, thereby improving the replacement efficiency and meeting the needs of mass production; 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0015] Figure 3 This is a schematic diagram of the structure of one of the drilling modules.

[0016] Figure 4 for Figure 3 A partial enlarged view of the .

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

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

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

[0020] Figure 8 This is a schematic diagram of the structure of the tool changing robot.

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

[0022] Fig.10 Schematic diagram of the cross-sectional structure of the drilling head, with the first drilling cutter and the second drilling cutter in the retracted state.

[0023] Fig.11 It is a schematic diagram of the local cross-sectional structure of the drilling head.

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

[0025] 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 drive arm,

[0029] 11-winding mechanism, 12-first coiling disc, 13-second coiling disc, 14-material belt, 15-winding wheel, 16-height adjustment member, 17-drilling device,

[0030] 2- Sliding table,

[0031] 20-guide sleeve, 21-through hole, 22-guide cylinder, 23-guide drilling hole, 24-arc surface, 25-bottom drive seat, 26-drive knife seat, 27-lifting power part, 28-guide rail plate, 29-guide shaft,

[0032] 3-Tool changing platform,

[0033] 31-driving plate, 32-tool changer, 33-tool changer drive seat, 34-tool changer support plate,

[0034] 35- horizontal telescopic cylinder, 36- positioning slot, 37- spare drill bit,

[0035] 4-Tool changing robot,

[0036] 41-support column, 42-first linear module, 43-second linear module, 44-tool change module,

[0037] 45-Z axis mounting plate,

[0038] 5-Bottom support seat,

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

[0040] 55-X-RAY camera,

[0041] 6-knife cylinder,

[0042] 61-bottom guide hole, 62-lifting piston rod, 63-lifting block, 64-chamfered slope,

[0043] 65-first guide hole, 66-second guide hole, 67-first drilling tool, 68-second drilling tool,

[0044] 7- Sliding cylinder,

[0045] 71-inwardly concave movable groove, 72-first groove wall, 73-second groove wall, 74-hinge block, 75-vertical groove

[0046] 76-lateral positioning rod, 77-first positioning hole, 78-second positioning hole, 79-lateral telescopic cylinder

[0047] 8-Cut-out chamber,

[0048] 81-connecting column, 82-hollow hole, 83-locking rod, 84-locking slope, 85-installation part,

[0049] 86-drilling portion, 87-bottom insertion hole, 88-locking groove, 89-locking block, 90-locking groove. DETAILED DESCRIPTION

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

[0051] like Figure 1-12 As shown, a double-station PCB drilling mechanism includes a drilling platform 1, wherein the drilling platform 1 is provided with a drilling device 17, and 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 guide groove 102.

[0052] A pressing mechanism for positioning the PCB is arranged above the drilling support plate 101. The pressing mechanism includes a pair of spaced-apart pressing seats 103. The pressing seats 103 are equipped with longitudinally arranged pressing blocks 104. The pressing blocks 104 can longitudinally move to press the PCB onto the drilling support plate 101.

[0053] Preferably, the pressing seat 103 is equipped with a lifting cylinder, and the driving end of the lifting cylinder is connected to the pressing block 104. When the PCB board moves to the drilling support plate 101 and is in place, the lifting cylinder drives the pressing block 104 to press down to prevent the PCB board from shifting laterally.

[0054] The drilling device 17 includes a pair of drilling modules. The two drilling modules can perform drilling operations on the PCB board at the same time, which further improves the efficiency.

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

[0056] The PCB board is located between the drilling head 54 and the guide cylinder 22, the material strip 14 is attached to the guide drill hole 23 of the guide cylinder 22, and the PCB board is also attached to the material strip 14. When drilling, after the drilling head 54 passes through the PCB board, the drilling head 54 simultaneously passes through the material strip 14 and enters the guide drill hole 23 of the guide cylinder 22. The material strip 14 cooperates with the guide cylinder 22 to press the hole position of the PCB board. When the drilling head 54 passes through, the hole position will not be deformed. The buffering of the material strip 14 can reduce the generation of burrs and improve the drilling quality of the PCB board.

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

[0058] The drilling head 54 and the guide cylinder 22 are longitudinally coaxially aligned, wherein the drilling head 54 is located below the guide cylinder 22. When drilling, the drilling head 54 passes through the PCB board from bottom to top, and the material strip 14 cooperates with the guide cylinder 22 to press the hole position on the top of the PCB board. When the drilling head 54 passes through, the hole position will not be deformed. The buffering of the material strip 14 can reduce the generation of burrs and improve the drilling quality of the PCB board.

[0059] Preferably, the positions of the drilling head 54 and the guide cylinder 22 can be interchanged according to needs. When drilling, the drilling head 54 passes through the PCB board from top to bottom; the drilling head 54 and the guide cylinder 22 can also be arranged horizontally, and the drilling head 54 passes through the PCB board from left to right or from right to left to drill a hole in the PCB board.

[0060] Specifically, the punching mechanism also includes a winding mechanism 11 for installing the material tape 14, and the winding mechanism 11 includes a first material reel 12 and a second material reel 13. The material tape 14 intermittently moves from the first material reel 12 to the second material reel 13. When punching, the second material reel 13 rotates to reel up the material tape 14. Each time a hole is punched, the material tape 14 moves a distance greater than the diameter of a hole, so that the drilling head 54 can contact the material tape 14 after passing through the PCB board. By having the material tape 14 fit the hole position, burrs on the hole position of the PCB board can be prevented.

[0061] The punching mechanism also includes a top driving arm 10 for installing the guide cylinder 22. The top driving arm 10 is installed 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 by the height adjusting member 16 to facilitate adaptation to PCB boards of different thicknesses.

[0062] Preferably, the height adjustment 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 punching mechanism 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] Furthermore, the bottom driving seat 25 is also provided with a photographing mechanism, which 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 X-RAY camera 55 can be used to photograph and locate the position where the hole needs to be drilled, and the drilling position can be determined. Since the X-RAY camera 55 and the drilling head are both installed on the bottom driving seat 25, the distance between them is a fixed value. After the X-RAY camera 55 determines the drilling position, the position where the drilling head needs to move can be calculated.

[0069] After the PCB board is subsequently positioned by the pressing mechanism, the drilling head of the drilling device 17 can drill holes at the determined positions.

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

[0071] A tool changing robot 4 is arranged on the side of the tool changing platform 3 and is aligned with the tool changing disc 32 in a transverse direction. A tool changing module 44 that can move in the X and Z axes is installed on the driving end of the tool changing robot 4, and a drilling head 54 that can move in the X and Y axes.

[0072] When the tool needs to be changed, the driving plate 31 and the tool changing disc 32 can move relative to each other in the Y-axis direction, so that the tool changing disc 32 can be exposed outward on the driving plate 31, so that the tool changing disc 32 is flush with the tool changing module 44 and the drilling head 54 in the X-axis direction respectively, and the tool changing robot 4 replaces the drilling head 54 to the tool changing disc 32 through the tool changing module 44; during replacement, the movement path of the tool changing module 44 is reduced, and it can be replaced quickly, thereby improving the replacement efficiency and meeting the needs of mass production.

[0073] In one of the embodiments, the tool changing platform 3 also includes a tool changing drive seat 33, on which the driving plate 31 and the tool changing disc 32 are both installed, and the tool changing drive seat 33 is provided with a tool disc driving component for driving the driving plate 31 to move in the Y-axis direction. Driven by the tool disc driving component, the driving plate 31 can move in the Y-axis direction, and the driving plate 31 moves in a direction away from the tool changing disc 32. At this time, the driving plate 31 will not block the tool changing disc 32, so that the tool changing disc 32 can be exposed and aligned with the tool changing module 44 of the tool changing robot 4 in the X-axis direction, so as to facilitate quick tool changing.

[0074] In one of the embodiments, the tool changing drive seat 33 is laterally formed with a tool disc support plate 34 for mounting the tool changing disc 32, the tool disc support plate 34 is located below the drive plate 31, and the tool disc drive component includes a transverse telescopic cylinder 35 arranged along the Y-axis, the transverse telescopic cylinder 35 is mounted on the tool disc support plate 34, and the driving end of the transverse telescopic cylinder 35 is connected to the tool changing disc 32. When the transverse telescopic cylinder 35 extends, the tool disc support plate 34 is fixed, and the tool changing disc 32 moves away from the drive plate 31 until the drive plate 31 does not block the tool changing disc 32, so that the tool changing disc 32 can be exposed, until it moves to align with the tool changing module 44 of the tool changing robot 4 in the X-axis direction, so as to facilitate quick tool changing.

[0075] The tool change disc 32 is formed with a plurality of positioning grooves 46 , in which spare drill bits 37 are placed. More than one spare drill bit 37 has different sizes, and spare drill bits 37 of corresponding sizes can be picked up for drilling according to needs.

[0076] When drilling holes in PCB boards, some PCB boards need to drill multiple holes with different hole diameters, and most drilling equipment uses multiple cylinders to drive different drilling cutters to achieve drilling, which requires the arrangement of a large number of pneumatic structures, affecting space occupancy.

[0077] The drilling head includes a knife barrel 6, which is axially formed with a first guide hole 65, and a first drilling knife 67 is slidably installed in the first guide hole 65. The knife barrel 6 is also obliquely formed with a pair of second guide holes 66, and the second guide holes 66 are located outside the first guide hole 65. The bottom of the second guide hole 66 is connected to the first guide hole 65, and a sliding cylinder 7 is slidably installed in the second guide hole 66. A lifting block 63 capable of lifting and lowering is installed in the first guide hole 65, and the top of the lifting block 63 is connected to the bottom of the first drilling knife 67. A second drilling knife 68 capable of longitudinal swinging is installed on the top of the sliding cylinder 7; the knife barrel 6 is also provided with a positioning component for keeping the extended second drilling knife 68 in a vertical posture, and the positioning component includes a transverse positioning rod 76 arranged transversely, and the second drilling knife 68 penetrates the first positioning rod 76 formed therein. Hole 77, the knife cylinder 6 is transversely formed with a second positioning hole 78 coaxially aligned with the transverse positioning rod 76; the lifting block 63 rises along the first guide hole 65, so that the first drilling knife 67 protrudes outward along the first guide hole 65; at the same time, the sliding cylinder 7 located in the second guide hole 66 can be lifted along the second guide hole 66 under the action of the lifting block 63, and the second drilling knife 68 installed on the top of the sliding cylinder 7 changes from an inclined posture to a vertical posture. After the knife is lifted to the required position, the transverse positioning rod 76 is coaxially aligned with the first positioning hole 77 and the second positioning hole 78. The transverse positioning rod 76 sequentially passes through the first positioning hole 77 and the second positioning hole 78 to position the second drilling knife 68, preventing the second drilling knife 68 from swinging during drilling, and maintaining a vertical posture for drilling. Multiple second drilling knives 68 cooperate with the first drilling knife 67 to realize simultaneous drilling of multiple positions of the PCB board, and only one lifting block 63 is needed to drive multiple drilling knives to move and realize drilling. The arrangement of pneumatic equipment and pneumatic structure is reduced. In addition, since the driving tool holder 26 can move up and down to drive the drilling head to move up and down, at the same time, the multiple drilling tools of the drilling head can be raised to different heights according to the depth requirements of the drilling, the heights of the drilling tools are different, and the depths of the drilling are also different.

[0078] Furthermore, an inwardly concave movable groove 71 is formed on the top of the sliding cylinder 7, and a hinge block 74 is installed on the inwardly concave movable groove 71. The inner end of the second drilling tool 68 is rotatably connected to the hinge block 74, and the inwardly concave movable groove 71 allows the second drilling tool 68 to swing to a vertical posture; a vertical groove 75 is formed inwardly on the top of the tool cylinder 6, and the bottom of the vertical groove 75 is connected to the second guide hole 66. The concave movable groove 71 includes a first groove wall 72 arranged vertically and a second groove wall 73 forming an acute angle with the first groove wall 72, and the second groove wall 73 is parallel to the sliding cylinder 7; when the lifting block 63 is lifted along the first guide hole 65, the sliding cylinder 7 can be lifted along the second guide hole 66, and the second drilling knife 68 hinged at the outer end of the sliding cylinder 7 is continuously changed from an inclined posture to a vertical posture under the action of the vertical groove 75, and the inner end of the second drilling knife 68 swings between the first groove wall 72 and the second groove wall 73 through the hinge block 74. After changing to a vertical posture, the inner side of the second drilling knife 68 is in contact with the first groove wall 72, thereby maintaining a vertical posture. After the lifting block 63 retreats, the first drilling knife 67 retreats along the first guide hole 65, and the sliding cylinder 7 retreats along the second guide hole 66 under the action of gravity. At this time, the first drilling knife 67 and the second drilling knife 68 are both retreated and will not be exposed to the outside, which effectively protects the first drilling knife 67 and the second drilling knife 68.

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

[0080] Preferably, a chamfered slope 64 is formed on the top of the lifting block 63, and the chamfered slope 64 is parallel to the bottom surface of the sliding cylinder 7. When the lifting block 63 is lifted along the first guide hole 65, the chamfered slope 64 on the top of the lifting block 63 slides with the slope on the bottom surface of the sliding cylinder 7, driving the sliding cylinder 7 to lift along the second guide hole 66; the outer diameter of the second drilling tool 68 is smaller than the outer diameter of the first drilling tool 67, and the outer wall of the second drilling tool 68 is formed with a guide expansion hole coaxially aligned with the first positioning hole 77 for the lateral positioning rod 76 to guide through; the outer wall of the knife cylinder 6 is provided with a transverse arrangement The positioning telescopic cylinder 79, the driving end of the positioning telescopic cylinder 79 is connected to the transverse positioning rod 76, and the second drilling tool 68 at the outer end of the sliding cylinder 7 is continuously changed from an inclined posture to a vertical posture under the action of the vertical groove 75. After the second drilling tool 68 is raised into place, the transverse positioning rod 76 is coaxially aligned with the first positioning hole 77 and the second positioning hole 78. The transverse positioning rod 76 passes through the first positioning hole 77 and the second positioning hole 78 in turn to position the second drilling tool 68, so as to prevent the second drilling tool 68 from swinging during drilling and keep the vertical posture for drilling.

[0081] The tool changing robot 4 includes a longitudinally arranged support column 41, and the support column 41 is equipped with a first linear module 42 arranged in the Z-axis direction. The driving end of the first linear module 42 is equipped 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. Under the drive of 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 to the top of the tool changing disk 32, is coaxially aligned with the spare drill 37 that needs to be replaced, and then approaches the spare drill 37 and replaces it to the corresponding drill 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 , so as to ensure that the first linear module 42 is stably installed in the Z-axis direction.

[0083] It should be noted that the tool changing module 44 uses adsorption to adsorb the spare drill 37 or the drilling head 54, and then replaces it to the tool changing disc 32. This is common knowledge in the tool changing field, and the specific structure of the tool changing module 44 is not described in detail here.

[0084] The drilling device 17 also includes a bottom support seat 5 for mounting a drilling head 54, wherein the bottom support seat 5 is slidably mounted with an X-axis movable seat 51 along the X-axis, and the X-axis movable seat 51 is slidably mounted with a Y-axis movable seat 52, and the bottom driving seat 25 is mounted on the Y-axis movable seat 52, and the Y-axis movable seat 52 is provided with a transversely arranged transverse fixing plate 53, and the transverse fixing plate 53 is vertically connected to the bottom driving seat 25, and the tool changing driving seat 33 is also mounted on the Y-axis movable seat 52, and the tool changing driving seat 33 is connected to the top driving arm 10, so that the guide cylinder 20 mounted on the top driving arm 10 can maintain coaxial alignment with the drilling head 54 of the bottom driving seat 25.

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

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

[0087] With the cooperation of the X-axis moving seat 51 and the Y-axis moving seat 52, the guide cylinder 20 installed on the top driving arm 10 can be coaxially aligned with the drilling head 54 of the bottom driving seat 25. When the tool needs to be changed, the tool changer 32 installed on the tool changer support plate 34 can be extended so that the tool changer 32 is aligned with the tool changer module 44 of the tool changer robot 4 in the X-axis direction.

[0088] Preferably, the bottom of the first drilling tool 67 is formed with a bottom insertion hole 87 for the connecting column 81 to be inserted; the connecting column 81 is formed with a hollow hole 82 of a hollow structure, the top of the connecting column 81 is radially formed with an elastically retracted 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 groove 88 for the locking block 89 to be embedded, the lifting block 63 is internally formed with a tool changing cavity 8, 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 that can move up and down, and the top of the locking platform is installed There is a locking rod 83 that moves in the hollow hole 82, and a locking bevel 84 that slides with the locking block 89 is formed on the top of the locking rod 83; when the locking rod 83 is raised, the locking rod 83 drives the locking block 89 through the locking bevel 84 to cooperate with the locking groove 88 of the bottom insertion hole 87 along the locking groove 90 to lock and install the first drilling tool 67; after the locking rod 83 retracts, the locking block 89 moves away from the locking groove 88 of the bottom insertion hole 87 along the locking groove 90 under the elastic action of the compression spring, so that the tool changing mechanism can replace the first drilling tool 67.

[0089] A lifting cylinder is arranged in the tool changing chamber 8, which can drive the locking rod 83 to perform lifting movement along the hollow hole 82 of the locking platform. Before drilling, the lifting cylinder can drive the locking rod 83 to rise along the hollow hole 82 of the locking platform, and the locking rod 83 slides with the locking block 89 of the locking groove 90 through the locking inclined surface 84, driving the locking block 89 to move radially outward and embed into the locking groove 88 of the first drilling tool 67, so as to lock the first drilling tool 67 for drilling. When it is necessary to change the tool of the first drilling tool 67, the lifting cylinder drives the locking rod 83 to descend and retreat. After the locking rod 83 retreats, the locking block 89 moves along the locking groove 90 away from the locking groove 88 of the bottom insertion hole 87 under the action of elasticity. At this time, the first drilling tool block is in an active state, and the tool changing mechanism can replace the first drilling tool 67.

[0090] It should be noted that the first drilling tool 67 is composed of a mounting portion 85 and a drilling portion 86 formed on the top of the mounting portion 85. In the spare drilling tools 37, the outer diameter of each mounting portion 85 is the same, and the outer diameter of the drilling portion 86 is different, so that each spare drilling tool 37 can be installed in the first guide hole 65 of the tool barrel 6 after replacement.

[0091] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0092] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting 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 punching mechanism also includes a winding mechanism for installing the material tape, the winding mechanism includes a first winding tray and a second winding tray, and the material tape intermittently moves from the first winding tray to the second winding tray.

4. A dual-station PCB drilling mechanism according to claim 3, characterized in that: The punching mechanism 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 punching mechanism includes a bottom driving seat for mounting a drilling head, the bottom driving seat can move in the X and Y directions, the punching mechanism 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.

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