Perforating device for large-size printed circuit board

Abstract

The utility model belongs to the technical field of circuit board processing, and provides a punching device for a large-size printed circuit board, which comprises a base, a positioning device and a lifting device, a first sliding chute is arranged in the base, a platform is movably connected in the first sliding chute, a second sliding chute is arranged in the platform, and the positioning device is movably connected in the second sliding chute. Lifting devices are arranged on the two sides of the base. A first supporting frame is arranged at the lower end of the base. The four edges of a circuit board are positioned and clamped through the positioning device under the cooperation of the L-shaped baffle, hole deviation caused by infirm positioning of the circuit board during punching is prevented, meanwhile, time and labor are saved during positioning of a mechanical device, two lifting power sources are provided for the drill bit through the lifting device, the balance of downward drilling or extraction of the drill bit is improved, and the drilling efficiency is improved. The occurrence probability of burrs is reduced, and the manufacturing quality of the circuit board is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board processing, in particular to a punching device for a large-size printed circuit board. Background Art

[0002] Printed circuit boards, also known as printed circuit boards, play a vital role in miniaturizing and visualizing circuits, enabling mass production of fixed circuits and optimizing the layout of electrical appliances. Punching, a crucial step in the circuit board manufacturing process, involves drilling the necessary vias into the copper-clad laminate to provide electrical connections and secure components. If the vias are not properly drilled, components may not be secured to the board, potentially impacting performance at best and rendering the entire board useless at worst.

[0003] In existing technology, large-scale circuit board drilling equipment can cause burrs (also known as burrs) when the drill bit vibrates during lowering or extraction due to unstable lifting equipment. This can also lead to skewed holes in the circuit board due to instability in the equipment's operation. Alternatively, the circuit board can be positioned loosely, resulting in misaligned holes. Manually securing the circuit board with pins is also an option, but it's time-consuming and labor-intensive. These issues can impact the usability of the circuit board and even render it useless.

[0004] In summary, the present invention provides a punching device for a large-sized printed circuit board to solve the above problems. Utility Model Content

[0005] The utility model provides a device for punching large-sized printed circuit boards. The device uses a positioning device and a lifting device to solve the problems in the prior art of the drill bit being prone to flashing due to the unstable lifting of the lifting device during the drilling or extraction process, the circuit board being loosely positioned, resulting in deviated holes during punching, or manual positioning being time-consuming and labor-intensive, affecting the use of the circuit board and even causing it to be scrapped.

[0006] A punching device for a large-size printed circuit board includes a base, a positioning device, and a lifting device. A first slide groove is provided inside the base, a platform is movably connected inside the first slide groove, a second slide groove is provided inside the platform, the positioning device is movably connected inside the second slide groove, lifting devices are provided on both sides of the base, and a first support frame is provided at the lower end of the base.

[0007] Preferably, the base is fixedly connected with a first limit plate on one side, a first mounting groove is opened inside the first limit plate on one side, a first servo motor is provided at one end inside the first mounting groove, and a first worm is connected to one end of the first servo motor in a transmission manner. The platform is fixedly connected with a second limit plate on one side, a second mounting groove is opened inside the second limit plate on one side, a second servo motor is provided at one end inside the second mounting groove, and a second worm is connected to one end of the second servo motor in a transmission manner.

[0008] Preferably, a thread matching the first worm is provided on the surface of the second limiting plate on the same side as the first worm.

[0009] Preferably, the positioning device includes a workbench, the lower end of the workbench is movably connected to the first synchronous wheel. The first synchronous wheel is sleeved on one side of the first transmission belt, and the first transmission belt is L-shaped on both sides and respectively passes around the second synchronous wheel and the third synchronous wheel. The fourth synchronous wheel is sleeved on one side of the first transmission belt, and the fifth synchronous wheel is sleeved on the other side of the first transmission belt. One end of the fifth synchronous wheel is transmission-connected to the third servo motor, one side of the lower end of the workbench is fixedly connected to the first slide rail, the first slide rail is movably connected to the first slider, the first slider is fixedly connected to two first clamps through a first connecting member, the other side of the lower end of the workbench is fixedly connected to the second slide rail, the second slide rail is movably connected to the second slider, and the second slider is fixedly connected to two second clamps through a second connecting member.

[0010] Preferably, the second synchronous wheel and the third synchronous wheel are located below the first synchronous wheel and are distributed in a mirror image. The fourth synchronous wheel and the fifth synchronous wheel are located on different sides of the second synchronous wheel and the third synchronous wheel. An outer cover is fixedly connected around the lower end of the workbench, and the second synchronous wheel, the third synchronous wheel, the fourth synchronous wheel, and the fifth synchronous wheel are movably connected to the lower end of the workbench respectively.

[0011] Preferably, a slide rail is located on the same side of the first synchronous wheel and the second synchronous wheel, the first connecting member is fixedly connected to one side of the first transmission belt, the second slide rail is located on the same side of the third synchronous wheel and the fifth synchronous wheel, and the second connecting member is fixedly connected to the other side of the first transmission belt.

[0012] Preferably, a strip groove adapted to the first clamping jaw and the second clamping jaw is opened on the surface of the workbench, and the first clamping jaw and the second clamping jaw are passed through the strip groove, and L-shaped baffles are fixedly connected to both sides of the workbench.

[0013] Preferably, the lifting device includes a fourth servo motor, one end of the fourth servo motor is transmission-connected to the sixth synchronous wheel, the sixth synchronous wheel is sleeved on one side of the second transmission belt, the other side of the second transmission belt is sleeved with the seventh synchronous wheel, both ends of the seventh synchronous wheel are fixedly connected to the first gear and the second gear through a spline shaft, one gear is meshedly connected to the first rack, the second gear is meshedly connected to the second rack, the upper ends of the first rack and the second rack are fixedly connected to the frame, a motor is provided at the middle upper end of the frame, and the lower end of the motor is transmission-connected to the drill bit.

[0014] Preferably, limit blocks are provided at both ends of the first rack and the second rack respectively, the surfaces of the first rack and the second rack are covered with corresponding third sliding grooves, the two ends of the spline shaft are movably connected with support members, and a second support frame is provided at the lower end of the fourth servo motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The utility model uses a positioning device to first align one corner of a large-size circuit board with a corner of an L-shaped baffle and place it on a workbench. Then, the third servo motor is started, and the third servo motor drives the fifth synchronous wheel to rotate. Under the action of the first transmission belt, the first slider and the second slider are driven to slide toward the center or the periphery of the workbench on the first slide rail and the second slide rail at the same time. With the cooperation of the L-shaped baffle, the four sides of the circuit board are positioned and clamped to prevent the circuit board from being loosely positioned, resulting in deviation of the holes during punching. At the same time, the positioning of the mechanical device saves time and effort.

[0017] 2. The utility model starts the fourth servo motor through the lifting device, and the fourth servo motor drives the sixth synchronous wheel to rotate. The sixth synchronous wheel allows the first rack and the second rack to rise and fall at the same time, providing the drill bit with two lifting power sources, improving the balance of the drill bit when drilling or pulling out, reducing the probability of flash, and improving the quality of circuit board production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is a top sectional view of the utility model;

[0020] Figure 3 This is a front view of the positioning device of the utility model;

[0021] Figure 4 It is a schematic diagram of the back of the positioning device of the utility model;

[0022] Figure 5 This is a physical diagram of the lifting device of the utility model.

[0023] In the picture:

[0024] 1. Base; 2. First slide; 3. Platform; 4. Second slide; 5. Positioning device; 6. Lifting device; 7. First limit plate; 8. First mounting slot; 9. First servo motor; 10. First worm; 11. Second limit plate; 12. Second mounting slot; 13. Second servo motor; 14. Second worm; 15. First support frame; 51. Workbench; 52. First synchronous wheel; 53. First transmission belt; 54. Second synchronous wheel; 55. Third synchronous wheel; 56. Fourth synchronous wheel; 57. Fifth synchronous wheel; 58. Third servo motor; 59. First slide rail; 510. First slider; 511. First connecting member; 512, first clamping jaw; 513, second slide rail; 514, second slider; 515, second connecting member; 516, second clamping jaw; 517, strip groove; 518, L-shaped baffle; 519, outer cover; 61, fourth servo motor; 62, sixth synchronous wheel; 63, second transmission belt; 64, seventh synchronous wheel; 65, spline shaft; 66, first gear; 67, second gear; 68, first rack; 69, second rack; 610, frame; 611, motor; 612, drill bit; 613, limit block; 614, support member; 615, second support frame; 616, third slide groove. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] like Figures 1 to 5 As shown, the utility model provides a punching device for a large-size printed circuit board, including a base 1, a positioning device 5, and a lifting device 6. A first slide groove 2 is provided inside the base 1, and a platform 3 is movably connected inside the first slide groove 2. A second slide groove 4 is provided inside the platform 3, and a positioning device 5 is movably connected inside the second slide groove 4. Lifting devices 6 are provided on both sides of the base 1, and a first support frame 15 is provided at the lower end of the base 1.

[0027] As a specific embodiment of the present utility model, the base 1 is fixedly connected with a first limit plate 7 on all sides, and a first mounting groove 8 is opened inside the first limit plate 7 on one side, and a first servo motor 9 is arranged at one end inside the first mounting groove 8, and a first worm 10 is connected to one end of the first servo motor 9 in a transmission manner. The platform 3 is fixedly connected with a second limit plate 11 on all sides, and a second mounting groove 12 is opened inside the second limit plate 11 on one side, and a second servo motor 13 is arranged at one end inside the second mounting groove 12, and a second servo motor 13 is connected to one end of the second servo motor 13 in a transmission manner.

[0028] As a specific embodiment of the present invention, a thread matching the first worm 10 is provided on the surface of the second limiting plate 11 on the same side as the first worm 10 .

[0029] When punching holes in a circuit board, it is necessary to punch holes in more than one position of the circuit board. The utility model starts the first servo motor 9 to drive the first worm 10. The first worm 10 drives the platform 3 in cooperation with the matching thread to translate left and right in the first slide 2. The first limit plate 7 is used to prevent the platform 3 from moving too far. The second servo motor 13 is started to drive the second worm 14. The second worm 14 drives the positioning device 5 in cooperation with the matching thread to translate back and forth in the second slide 4. The second limit plate 11 is used to prevent the positioning device 5 from moving too far.

[0030] As a specific embodiment of the present utility model, the positioning device 5 includes a workbench 51, and the lower end of the workbench 51 is movably connected to the first synchronous wheel 52. The first synchronous wheel 52 is sleeved on one side of the first transmission belt 53, and the first transmission belt 53 is L-shaped on both sides and passes around the second synchronous wheel 54 and the third synchronous wheel 55 respectively. A fourth synchronous wheel 56 is sleeved on one side of the first transmission belt 53, and a fifth synchronous wheel 57 is sleeved on the other side of the first transmission belt 53. One end of the fifth synchronous wheel 57 is transmission-connected to the third servo motor 58, and one side of the lower end of the workbench 51 is fixedly connected to the first slide rail 59, and the first slide rail 59 is movably connected to the first slider 510. The first slider 510 is fixedly connected to two first clamping jaws 512 through a first connecting member 511, and the other side of the lower end of the workbench 51 is fixedly connected to the second slide rail 513. The second slide rail 513 is movably connected to the second slider 514, and the second slider 514 is fixedly connected to two second clamping jaws 516 through a second connecting member 515.

[0031] As a specific embodiment of the present utility model, the second synchronous wheel 54 and the third synchronous wheel 55 are located below the first synchronous wheel 52 and are distributed in a mirror image. The fourth synchronous wheel 56 and the fifth synchronous wheel 57 are located on different sides of the second synchronous wheel 54 and the third synchronous wheel 55. An outer cover is fixedly connected around the lower end of the workbench 51.

[0032] As a specific embodiment of the present invention, a slide rail is located on the same side of the first synchronous wheel 52 and the second synchronous wheel 54, the first connecting member 511 is fixedly connected to one side of the first transmission belt 53, the second slide rail 513 is located on the same side of the third synchronous wheel 55 and the fifth synchronous wheel 57, and the second connecting member 515 is fixedly connected to the other side of the first transmission belt 53.

[0033] As a specific embodiment of the present invention, a strip groove 517 adapted to the first clamping jaw 512 and the second clamping jaw 516 is opened on the surface of the workbench 51, and the first clamping jaw 512 and the second clamping jaw 516 are passed through the strip groove 517, and L-shaped baffles 518 are fixedly connected on both sides of the workbench 51.

[0034] First, align one corner of the large-size circuit board with one corner of the L-shaped baffle 518 and place it on the workbench 51 to position both sides of the circuit board. Then start the third servo motor 58, which drives the fifth synchronous wheel 57 to rotate. Under the action of the first transmission belt 53, the first synchronous wheel 52, the second synchronous wheel 54, the third synchronous wheel 55 and the fourth synchronous wheel 56 are driven to rotate at the same time. At this time, because the first connecting member 511 and the second connecting member 515 are fixedly connected to one side of the first transmission belt 53 respectively, the first slider 510 and the second slider 514 will be driven to slide toward the center or the periphery of the workbench 51 on the first slide rail 59 and the second slide rail 513 to realize the positioning and clamping function of the first clamping jaw 512 and the second clamping jaw 516 to position the other two sides of the circuit board. At this time, the positioning and clamping of the four sides of the circuit board are completed to prevent the circuit board from being loosely positioned, resulting in deviation of the holes during punching. At the same time, the positioning of the mechanical device saves time and effort.

[0035] As a specific embodiment of the present utility model, the lifting device 6 includes a fourth servo motor 61, one end of the fourth servo motor 61 is transmission-connected to the sixth synchronous wheel 62, the sixth synchronous wheel 62 is sleeved on one side of the second transmission belt 63, and the other side of the second transmission belt 63 is sleeved with the seventh synchronous wheel 64, and the two ends of the seventh synchronous wheel 64 are fixedly connected to the first gear 66 and the second gear 67 through the spline shaft 65, one gear is meshed with the first rack 68, and the second gear 67 is meshed with the second rack 69, and the upper ends of the first rack 68 and the second rack 69 are fixedly connected to the frame 610, and a motor 611 is provided at the middle upper end of the frame 610, and the lower end of the motor 611 is transmission-connected to the drill bit 612.

[0036] As a specific embodiment of the present utility model, a limit block 613 is respectively provided at both ends of the first rack 68 and the second rack 69, a corresponding third slide groove is provided on the surface of the first rack 68 and the second rack 69, support members 614 are movably connected at both ends of the spline shaft 65, and a second support frame 615 is provided at the lower end of the fourth servo motor 61.

[0037] Start the fourth servo motor 61, which drives the sixth synchronous wheel 62 to rotate. The sixth synchronous wheel 62 drives the seventh synchronous wheel 64 to rotate through the second transmission belt 63. The seventh synchronous wheel 64 drives the first gear 66 and the second gear 67 to rotate simultaneously under the action of the spline shaft 65. The first gear 66 and the second gear 67 drive the first rack 68 and the second rack 69 to rise and fall simultaneously, giving the drill bit 612 two lifting power sources, improving the balance of the drill bit 612 in drilling or extraction, reducing the probability of flash, and improving the quality of circuit board production. The limit block 613 is used to prevent the first rack 68 and the second rack 69 from moving too far.

[0038] How it works

[0039] First, align one corner of the large-size circuit board with one corner of the L-shaped baffle 518 and place it on the workbench 51 to position both sides of the circuit board. Then start the third servo motor 58, which drives the fifth synchronous wheel 57 to rotate. Under the action of the first transmission belt 53, the first synchronous wheel 52, the second synchronous wheel 54, the third synchronous wheel 55 and the fourth synchronous wheel 56 are driven to rotate at the same time. At this time, because the first connecting member 511 and the second connecting member 515 are fixedly connected to one side of the first transmission belt 53 respectively, the first slider 510 and the second slider 514 will be driven to slide toward the center or the periphery of the workbench 51 on the first slide rail 59 and the second slide rail 513 to realize the positioning and clamping function of the first clamping jaw 512 and the second clamping jaw 516 to position the other two sides of the circuit board. At this time, the positioning and clamping of the four sides of the circuit board are completed to prevent the circuit board from being loosely positioned, resulting in deviation of the holes during punching. At the same time, the positioning of the mechanical device saves time and effort.

[0040] Then the fourth servo motor 61 is started, and the fourth servo motor 61 drives the sixth synchronous wheel 62 to rotate. The sixth synchronous wheel 62 drives the seventh synchronous wheel 64 to rotate through the second transmission belt 63. The seventh synchronous wheel 64 drives the first gear 66 and the second gear 67 to rotate simultaneously under the action of the spline shaft 65. The first gear 66 and the second gear 67 drive the first rack 68 and the second rack 69 to rise and fall simultaneously, giving the drill bit 612 two lifting power sources, improving the balance of the drill bit 612 when drilling or pulling out, reducing the probability of flash, and improving the quality of circuit board production. Then the motor 612 is started, and the motor 612 drives the drill bit 612 to rotate to complete the drilling.

[0041] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A punching device for a large-size printed circuit board, characterized in that: The invention comprises a base (1), a positioning device (5), and a lifting device (6); a first slide groove (2) is provided inside the base (1); a platform (3) is movably connected inside the first slide groove (2); a second slide groove (4) is provided inside the platform (3); a positioning device (5) is movably connected inside the second slide groove (4); lifting devices (6) are provided on both sides of the base (1); and a first support frame (15) is provided at the lower end of the base (1).

2. A punching device for a large-size printed circuit board as claimed in claim 1, characterized in that: The base (1) is fixedly connected to a first limit plate (7) on all sides, wherein a first mounting groove (8) is provided inside the first limit plate (7) on one side, a first servo motor (9) is provided at one end inside the first mounting groove (8), and a first worm (10) is connected to one end of the first servo motor (9) in a transmission manner; the platform (3) is fixedly connected to a second limit plate (11) on all sides, wherein a second mounting groove (12) is provided inside the second limit plate (11) on one side, a second servo motor (13) is provided at one end inside the second mounting groove (12), and a second worm (14) is connected to one end of the second servo motor (13).

3. A punching device for a large-size printed circuit board as claimed in claim 2, characterized in that: A thread matching the first worm (10) is provided on the surface of the second limiting plate (11) on the same side as the first worm (10) in the second limiting plate (11).

4. A punching device for a large-size printed circuit board as claimed in claim 1, characterized in that: The positioning device (5) comprises a workbench (51), the lower end of the workbench (51) is movably connected with a first synchronous wheel (52), the first synchronous wheel (52) is sleeved on one side of a first transmission belt (53), the two sides of the first transmission belt (53) are L-shaped and respectively pass around a second synchronous wheel (54) and a third synchronous wheel (55), one side of the first transmission belt (53) is sleeved with a fourth synchronous wheel (56), the other side of the first transmission belt (53) is sleeved with a fifth synchronous wheel (57), one end of the fifth synchronous wheel (57) is transmission-connected to a third servo motor (58), a first slide rail (59) is fixedly connected to one side of the lower end of the workbench (51), the first slide rail (59) is movably connected to a first slider (510), the first slider (510) is fixedly connected to two first clamping jaws (512) via a first connecting member (511), a second slide rail (513) is fixedly connected to the other side of the lower end of the workbench (51), the second slide rail (513) is movably connected to a second slider (514), the second slider is fixedly connected to two second clamping jaws (516) via a second connecting member (515).

5. A punching device for a large-size printed circuit board as claimed in claim 4, characterized in that: The second synchronous wheel (54) and the third synchronous wheel (55) are located below the first synchronous wheel (52) and are distributed in a mirror image. The fourth synchronous wheel (56) and the fifth synchronous wheel (57) are located on different sides of the second synchronous wheel (54) and the third synchronous wheel (55). An outer cover (519) is fixedly connected to the lower end of the workbench (51) around the periphery. The second synchronous wheel (54), the third synchronous wheel (55), the fourth synchronous wheel (56) and the fifth synchronous wheel (57) are respectively movably connected to the lower end of the workbench (51).

6. A punching device for a large-size printed circuit board as claimed in claim 4, characterized in that: The first slide rail (59) is located on the same side of the first synchronous wheel (52) and the second synchronous wheel (54), the first connecting member (511) is fixedly connected to one side of the first transmission belt (53), the second slide rail (513) is located on the same side of the third synchronous wheel (55) and the fifth synchronous wheel (57), and the second connecting member (515) is fixedly connected to the other side of the first transmission belt (53).

7. A punching device for a large-size printed circuit board as claimed in claim 4, characterized in that: The surface of the workbench (51) is provided with a strip groove (517) adapted to the first clamping jaw (512) and the second clamping jaw (516), and the first clamping jaw (512) and the second clamping jaw (516) are inserted into the strip groove (517), and L-shaped baffles (518) are fixedly connected to both sides of the workbench (51).

8. A punching device for a large-size printed circuit board as claimed in claim 1, characterized in that: The lifting device (6) comprises a fourth servo motor (61), one end of the fourth servo motor (61) is drivingly connected to a sixth synchronous wheel (62), the sixth synchronous wheel (62) is sleeved on one side of a second transmission belt (63), the other side of the second transmission belt (63) is sleeved with a seventh synchronous wheel (64), both ends of the seventh synchronous wheel (64) are fixedly connected to a first gear (66) and a second gear (67) through a spline shaft (65), the first gear (66) is meshingly connected to a first rack (68), the second gear (67) is meshingly connected to a second rack (69), the upper ends of the first rack (68) and the second rack (69) are fixedly connected to a frame (610), a motor (611) is arranged at the middle upper end of the frame (610), and the lower end of the motor (611) is drivingly connected to a drill bit (612).

9. A punching device for a large-size printed circuit board as claimed in claim 8, characterized in that: Limit blocks (613) are respectively arranged at both ends of the first rack (68) and the second rack (69); the surfaces of the first rack (68) and the second rack (69) are sleeved with matching third slide grooves (616); both ends of the spline shaft (65) are movably connected with support members (614); and a second support frame (615) is arranged at the lower end of the fourth servo motor (61).

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