Laser drilling equipment and method for producing porous copper foil

Abstract

The present invention relates to the field of laser drilling technology, and discloses a laser drilling device for producing porous copper foil, wherein a foil placing roller and a guide roller are fixedly connected to one side of the processing table, and side plates are fixedly connected to both sides of the top of the processing table, wherein a set of side plates has a sliding groove opened transversely inside, a displacement mechanism is installed above the tungsten plate, and a pressing mechanism is connected between the two side plates. The pressing mechanism can drive two sets of pressing plates to press down, so as to facilitate clamping the two sides of the copper foil laid flat on the tungsten plate, prevent the copper foil from being deformed by heat during high-temperature laser drilling, thereby causing deviation in the drilling position, so that the copper foil can be horizontally laid on the tungsten plate for laser drilling, and the tungsten plate and the copper foil on the top can be cooled by repeatedly injecting cooling water through cooling pipes distributed at the bottom of the tungsten plate, which can effectively reduce the probability of thermal deformation when drilling the copper foil, so that the holes drilled on the copper foil by laser are smoother and smoother, and the drilling quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser drilling, and in particular to a laser drilling device and method for producing porous copper foil. Background Art

[0002] Copper foil is a cathodic electrolytic material, a thin, continuous metal foil deposited on the base layer of the circuit board. As a conductor of the PCB, it is easy to adhere to the insulating layer, accept the printed protective layer, and form a circuit pattern after corrosion. Laser drilling is one of the commonly used copper foil perforation technologies. Laser has the characteristics of high energy density and good directionality. It can achieve perforation of the copper foil at the specified position by ablating the copper foil with pulsed laser. The copper foil punching process in this way has high processing accuracy, small processable aperture, and can process more complex hole arrangements.

[0003] At present, the thickness of copper foil is usually at the thin micron level. However, since the operating temperature of the laser beam is very high, when the high-temperature laser beam comes into contact with the thinner copper foil, it will cause problems such as thermal deformation in the area around the punching hole, which can easily cause the punching quality to fail to meet the standards. Summary of the invention

[0004] The object of the present invention is to provide a laser drilling device and method for producing porous copper foil to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A laser drilling device for producing porous copper foil, comprising a processing table, a foil placing roller and a guide roller are fixedly connected to one side of the processing table, a tungsten plate is fixedly connected to the inside of the processing table, side plates are fixedly connected to both sides of the top of the processing table, a sliding groove is horizontally opened inside one group of the side plates, a displacement mechanism is installed above the tungsten plate, and a material pressing mechanism is connected between the two side plates;

[0006] The displacement mechanism comprises a first vertical plate, a second vertical plate and a first motor. The front surface of the processing table is fixedly connected with the first vertical plate and the second vertical plate. The first motor is fixedly connected with the first vertical plate. The driving end of the first motor passes through the first vertical plate and is fixedly connected with a threaded rod. The external thread sleeve of the threaded rod is provided with an adjusting block. The rear surface of the adjusting block is fixedly connected with a sliding block. The top of the adjusting block is fixedly connected with a mounting frame. The top of the mounting frame is provided with a guide groove. The mounting frame is slidably sleeved with a mounting frame. The top of the mounting frame is fixedly connected with a fastening block. One end of the fastening block is fixedly connected with the second motor. The driving end of the second motor is fixedly connected with a first gear. The first gear is meshed with a first rack. The first rack is fixedly connected to the mounting frame. Two guide plates are fixedly connected to the inner wall of the mounting frame. Two limit plates are fixedly connected to the bottom of the mounting frame. A fixed block is installed between the two limit plates. A laser is fixedly connected to the bottom of the fixed block. Two sets of lockers are also connected between the fixed block and the mounting frame. Scale lines are provided on the front surface of the processing table and the top of the mounting frame.

[0007] The pressing mechanism includes a first rack, a second rack and a first pulley, the first rack and the second rack are fixedly connected to the rear surface of the processing table, the third motor is fixedly connected to the rear surface of the first rack, the driving end of the third motor passes through the first rack and is fixedly connected to the first transmission shaft, the external fixed sleeve of the first transmission shaft is provided with a first pulley, the second rack is rotatably connected to the second transmission shaft through a bearing, the external fixed sleeve of the second transmission shaft is provided with a second pulley, the external sleeves of the first pulley and the second pulley are provided with a transmission belt, the first transmission shaft and the second transmission shaft are both fixedly connected with a first bracket, one end of the first bracket is hinged to the second bracket, the bottom end of the second bracket is hinged to a pressing plate, the bottom of the pressing plate is connected to an adjuster, the bottom of the adjuster is connected to a connecting rod, and the connecting rod is fixedly connected to a cooling pipe.

[0008] Optionally, the locker includes a first vertical rod, a first spring and a stop block, the first vertical rod is fixedly connected to the first spring, one end of the first spring is fixedly connected to the stop block, one end of the first vertical rod is integrally connected to the first locking block, and a second vertical rod is installed on the same side of the first vertical rod, one end of the second vertical rod is integrally connected to the second locking block, and the other end of the first vertical rod is rotatably connected to the fixed block via a pin shaft.

[0009] Optionally, the top of the first locking block and the bottom of the second locking block are both inclined, and the bottom of the first locking block and the top of the second locking block are parallel to each other, the stopper is fixed to the fixing block, and the second vertical rod is fixed to the bottom of the mounting frame.

[0010] Optionally, the guide plate is slidably connected to the inside of the guide groove, the sliding block is slidably connected to the inside of the sliding groove, and one end of the threaded rod is rotatably connected to the second vertical plate through a bearing.

[0011] Optionally, a limiting groove is provided on the inner wall of the limiting plate, and the limiting block is slidably connected in the limiting groove.

[0012] Optionally, the adjuster includes a second gear, a second rack and a third rack, the second gear is respectively meshed with the second rack and the third rack on both sides, the front surface of the second rack and the front surface of the third rack are fixed with anti-slip blocks, the top of the second rack is fixed with a roller, and the bottom of the second rack is fixed with a second spring.

[0013] Optionally, the second gear is rotatably connected to the tungsten plate via a bearing, the front and rear surfaces of the tungsten plate are longitudinally provided with anti-slip grooves, the anti-slip block is a "T"-shaped structure, and the anti-slip block is slidably connected in the anti-slip groove.

[0014] Optionally, one end of the second spring is fixed to the top of the connecting rod, the bottom end of the third rack is fixed to the top of the connecting rod, the cooling tube is located directly below the tungsten plate, and the two ends of the cooling tube are respectively fixed with a water inlet and a water outlet.

[0015] Optionally, one end of the first transmission shaft and one end of the second transmission shaft are rotatably connected to one of the side plates via bearings, and the first bracket, the second bracket and the pressure plate are symmetrically distributed with respect to the central axis of the tungsten plate.

[0016] A laser drilling method for producing porous copper foil comprises the following steps:

[0017] S1, guide the copper foil wound on the foil roller horizontally through the guide roller and then lay it flat on the tungsten plate;

[0018] S2. Use the material pressing mechanism to drive two sets of pressing plates to press down and clamp the two sides of the copper foil laid flat on the tungsten plate to prevent the copper foil from being deformed by heat during the high-temperature laser drilling process, thereby causing deviation in the drilling position. When the two sets of pressing plates are pressed down and contacted with the roller, they can pull the cooling tube upward. When the cooling tube contacts the bottom of the tungsten plate, cooling water is injected into the cooling tube to cool the tungsten plate and the copper foil, further reducing the wrinkles of the copper foil.

[0019] S3, using a displacement mechanism to control the laser to slide horizontally and vertically, adjusting the laser to an ideal position in coordination with the scale line, and then laser drilling the copper foil on the tungsten plate through the high-temperature laser beam emitted by the laser;

[0020] S4. After the copper foil on the current tungsten plate is punched, the two sets of pressing plates are driven upward by the pressing mechanism, and the copper foil is driven to continue to be unwound by the foil unwinding roller, so that the unwound copper foil can continue to be punched.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The displacement mechanism can drive the laser to move horizontally and vertically. When used in combination with the scale line, it is easy to adjust it to the ideal position for laser drilling of copper foil, thereby improving the drilling accuracy of the copper foil and reducing errors.

[0023] 2. The locking device facilitates the disassembly and assembly of the laser, shortening the disassembly and assembly time of the laser.

[0024] 3. The pressing mechanism can drive two sets of pressing plates to press down, so as to facilitate clamping the two sides of the copper foil laid flat on the tungsten plate, to prevent the copper foil from being deformed by heat during high-temperature laser drilling, thereby causing deviation in the drilling position, so that the copper foil can be laid horizontally on the tungsten plate for laser drilling.

[0025] 4. Through the cooling tubes distributed at the bottom of the tungsten plate, the tungsten plate and the copper foil on the top can be cooled by repeatedly injecting cooling water, which can effectively reduce the probability of thermal deformation when punching the copper foil, making the holes punched by the laser on the copper foil smoother and smoother, thereby improving the punching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a side view of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the material pressing mechanism in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the tungsten plate in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the regulator in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the displacement mechanism in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the installation frame in the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the locking device in the present invention.

[0034] In the figure: 1, processing table; 2, foil roller; 3, guide roller; 4, slide; 5, tungsten plate; 6, side plate; 7, displacement mechanism; 71, first vertical plate; 72, second vertical plate; 73, first motor; 74, threaded rod; 75, adjustment block; 751, slider; 752, mounting frame; 753, guide groove; 76, mounting frame; 761, fastening block; 762, second motor; 763, first gear; 764, first rack; 765, guide plate; 766, limit plate; 77, fixed block; 771, limit block; 78, laser; 79, lock; 791, first vertical rod; 792, first spring; 793, stopper; 794, first locking block; 795, second vertical rod; 796, second locking block; 8, pressing mechanism; 81, first storage rack; 811, third motor; 812, first transmission shaft; 82, second storage rack; 821, second transmission shaft; 822, second pulley; 83, first pulley; 84, transmission belt; 85, first bracket; 86, second bracket; 87, pressing plate; 88, regulator; 881, second gear; 882, second rack; 883, third rack; 884, anti-dropping block; 885, roller; 886, second spring; 89, connecting rod; 891, cooling pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 8 The present invention provides a laser drilling device for producing porous copper foil, comprising a processing table 1, a foil placing roller 2 and a guide roller 3 are fixedly connected to one side of the processing table 1, a tungsten plate 5 is fixedly connected to the inside of the processing table 1, side plates 6 are fixedly connected to both sides of the top of the processing table 1, a group of side plates 6 has a sliding groove 4 transversely opened inside, a displacement mechanism 7 is installed above the tungsten plate 5, and a material pressing mechanism 8 is connected between the two side plates 6.

[0037] The displacement mechanism 7 includes a first vertical plate 71, a second vertical plate 72 and a first motor 73. The first vertical plate 71 and the second vertical plate 72 are fixedly connected to the front surface of the processing table 1. The first vertical plate 71 is fixedly connected to the first motor 73. The driving end of the first motor 73 passes through the first vertical plate 71 and is fixedly connected to a threaded rod 74. The external thread sleeve of the threaded rod 74 is provided with an adjusting block 75. The rear surface of the adjusting block 75 is fixedly connected to a sliding block 751. The top of the adjusting block 75 is fixedly connected to a mounting frame 752. The top of the mounting frame 752 is provided with a guide groove 753. The mounting frame 752 is slidably sleeved with a mounting frame 76. The top of the mounting frame 76 is fixedly connected to a fastening block 761. One end of the fastening block 761 is fixedly connected to the second motor 762. The driving end of the second motor 762 is fixedly connected to a first gear 763. The first gear 763 is meshed with a first rack 764. The first rack 764 is fixedly connected to the mounting frame 752. Two guide plates 765 are fixedly connected to the inner wall of the mounting frame 76, and two limit plates 766 are fixedly connected to the bottom of the mounting frame 76. A fixing block 77 is installed between the two limit plates 766. A laser 78 is fixedly connected to the bottom of the fixing block 77. Two sets of lockers 79 are also connected between the fixing block 77 and the mounting frame 76. Scale lines are provided on the front surface of the processing table 1 and the top of the mounting frame 752. The guide plate 765 is slidably connected to the inside of the guide groove 753, and the slider 751 is slidably connected to the inside of the slide groove 4. One end of the threaded rod 74 is rotatably connected to the second vertical plate 72 through a bearing. A limit groove is provided on the inner wall of the limit plate 766, and the limit block 771 is slidably connected in the limit groove. The displacement mechanism 7 can drive the laser 78 to move horizontally and vertically. When used in combination with the scale lines, it is convenient to adjust it to an ideal position to perform laser drilling on the copper foil, thereby improving the drilling accuracy of the copper foil and reducing errors.

[0038] The locking device 79 comprises a first vertical rod 791, a first spring 792 and a stopper 793. The first vertical rod 791 is fixedly connected to the first spring 792, one end of the first spring 792 is fixedly connected to the stopper 793, one end of the first vertical rod 791 is integrally connected to the first locking block 794, and a second vertical rod 795 is installed on the same side of the first vertical rod 791, one end of the second vertical rod 795 is integrally connected to the second locking block 796, the other end of the first vertical rod 791 is rotatably connected to the fixed block 77 through a pin shaft, the top of the first locking block 794 and the bottom of the second locking block 796 are both inclined, and the bottom of the first locking block 794 and the top of the second locking block 796 are parallel to each other, the stopper 793 is fixedly connected to the fixed block 77, and the second vertical rod 795 is fixedly connected to the bottom of the mounting frame 76. The locking device 79 facilitates the disassembly and assembly of the laser 78, thereby shortening the disassembly and assembly time of the laser 78.

[0039] The pressing mechanism 8 includes a first rack 81, a second rack 82 and a first pulley 83. The first rack 81 and the second rack 82 are fixedly connected to the rear surface of the processing table 1. The third motor 811 is fixedly connected to the rear surface of the first rack 81. The driving end of the third motor 811 passes through the first rack 81 and is fixedly connected to the first transmission shaft 812. The first pulley 83 is provided on the external fixed sleeve of the first transmission shaft 812. The second rack 82 is rotatably connected to the second transmission shaft 821 through a bearing. The second pulley 822 is provided on the external fixed sleeve of the second transmission shaft 821. The first pulley 83 and the second pulley 822 are provided with a transmission belt 84 on their outer sleeves. The first transmission shaft 812 and the second transmission shaft 821 are both fixedly connected to the first bracket 85. The first bracket 85 is fixedly connected to the first transmission shaft 812 and the second transmission shaft 821. One end of the frame 85 is hinged with a second bracket 86, and the bottom end of the second bracket 86 is hinged with a pressing plate 87. The bottom of the pressing plate 87 is connected with an adjuster 88, and the bottom of the adjuster 88 is connected with a connecting rod 89. A cooling pipe 891 is fixedly connected to the connecting rod 89. One end of the first transmission shaft 812 and one end of the second transmission shaft 821 are rotatably connected to one group of side plates 6 through bearings. The first bracket 85, the second bracket 86 and the pressing plate 87 are symmetrically distributed with the central axis of the tungsten plate 5 as a reference. The pressing mechanism 8 can drive the two groups of pressing plates 87 to press down, so as to facilitate clamping the two sides of the copper foil laid flat on the tungsten plate 5, prevent the copper foil from being deformed by heat during high-temperature laser drilling, thereby causing deviation in the drilling position, so that the copper foil can be horizontally laid on the tungsten plate 5 for laser drilling.

[0040] The regulator 88 includes a second gear 881, a second rack 882 and a third rack 883. The second gear 881 is meshed with the second rack 882 and the third rack 883 on both sides. The front surfaces of the second rack 882 and the third rack 883 are fixedly connected with anti-dropping blocks 884. The top of the second rack 882 is fixedly connected with a roller 885, and the bottom of the second rack 882 is fixedly connected with a second spring 886. The second gear 881 is rotatably connected to the tungsten plate 5 through a bearing. The front and rear surfaces of the tungsten plate 5 are longitudinally provided with anti-dropping grooves. The anti-dropping block 884 is a "T"-shaped structure, and The anti-slip block 884 is slidably connected in the anti-slip groove, one end of the second spring 886 is fixed to the top of the connecting rod 89, the bottom end of the third rack 883 is fixed to the top of the connecting rod 89, and the cooling pipe 891 is located directly below the tungsten plate 5. The two ends of the cooling pipe 891 are respectively fixed with a water inlet and a water outlet. Through the cooling pipe 891 distributed at the bottom of the tungsten plate 5, the tungsten plate 5 and the copper foil on the top can be cooled by repeatedly injecting cooling water, which can effectively reduce the probability of thermal deformation when punching the copper foil, making the holes punched on the copper foil by laser smoother and smoother, thereby improving the punching quality.

[0041] A laser drilling method for producing porous copper foil comprises the following steps:

[0042] S1, the copper foil wound on the foil roller 2 is horizontally guided by the guide roller 3 and then laid flat on the tungsten plate 5;

[0043] S2. Use the material pressing mechanism 8 to drive two sets of pressing plates 87 to press down to clamp the two sides of the copper foil laid flat on the tungsten plate 5 to prevent the copper foil from being deformed by heat during the high-temperature laser drilling process, thereby causing deviation in the drilling position. When the two sets of pressing plates 87 are pressed down, they can contact the roller 885 and pull the cooling tube 891 upward. When the cooling tube 891 contacts the bottom of the tungsten plate 5, cooling water is injected into the cooling tube 891 to cool the tungsten plate 5 and the copper foil, thereby further reducing the wrinkles of the copper foil.

[0044] S3, using the displacement mechanism 7 to control the laser 78 to slide horizontally and vertically, after adjusting the laser 78 to an ideal position in coordination with the scale line, the copper foil on the tungsten plate 5 is laser-drilled by the high-temperature laser beam emitted by the laser 78;

[0045] S4. After the copper foil on the current tungsten plate 5 is punched, the two sets of pressing plates 87 are driven upward by the pressing mechanism 8, and the copper foil is continued to be unwound by the foil unwinding roller 2, so that the unwound copper foil can continue to be punched.

[0046] Specifically, the laser 78 is a fiber laser with a laser power of 30 W. A plurality of through holes with a diameter of 0.04 mm are evenly formed in the tungsten plate 5 , and the spacing between adjacent through holes is 600 μm.

[0047] Working principle: When using the device, the copper foil wound on the foil placing roller 2 is horizontally guided by the guide roller 3 and then laid flat on the tungsten plate 5, and the third motor 811 is controlled to reverse, at which time the first transmission shaft 812 and the first pulley 83 can be driven to reverse, and under the action of the transmission belt 84, the second pulley 822 and the second transmission shaft 821 can be driven to reverse, and at this time, the first bracket 85 on the first transmission shaft 812 and the second transmission shaft 821 can be driven to reverse synchronously, thereby driving the two groups of second brackets 86 to move, and finally driving the two groups of pressing plates 87 to move downward at the same time. When the pressing plate 87 contacts the tungsten plate 5, the two sides of the copper foil can be clamped. At the same time, the pressing plate 87 contacts the roller 885 during the downward movement, thereby driving the roller 885 to move downward. After the roller 885 moves downward, the second rack 882 can be driven downward. At this time, the second spring 886 is stretched, and the second gear 881 can be driven to reverse, and the second gear 881 can drive the third rack 883 to rise after reversing, thereby driving the connecting gear 881 to reverse. The rod 89 and the cooling tube 891 are raised until the cooling tube 891 is against the bottom of the tungsten plate 5. At this time, the first motor 73 and the second motor 762 are controlled to work. After the first motor 73 rotates forward and reversely, it can drive the adjustment block 75, the mounting frame 752 and the laser 78 to move left and right. After the second motor 762 rotates forward and reversely, the engagement of the first gear 763 and the first rack 764 can drive the laser 78 to move forward and backward. When used in combination with the scale line, it is convenient to adjust the laser 78 to an ideal position. When the laser 78 and the through hole in the lower tungsten plate 5 are on the same vertical line, the laser beam emitted by the laser 78 can be used to laser drill the copper foil, thereby improving the drilling accuracy of the copper foil and reducing the error. During the laser drilling process, the tungsten plate 5 and the top copper foil can be cooled by repeatedly injecting cooling water into the cooling tube 891, which can effectively reduce the probability of thermal deformation during copper foil drilling, making the holes drilled by the laser on the copper foil smoother and smoother, thereby improving the drilling quality.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser drilling device for producing porous copper foil, comprising a processing table (1), characterized in that: A foil placing roller (2) and a guide roller (3) are fixedly connected to one side of the processing table (1), a tungsten plate (5) is fixedly connected to the inside of the processing table (1), side plates (6) are fixedly connected to both sides of the top of the processing table (1), a set of side plates (6) is provided with a sliding groove (4) in the inside transverse direction, a displacement mechanism (7) is installed above the tungsten plate (5), and a material pressing mechanism (8) is connected between the two side plates (6); The displacement mechanism (7) comprises a first vertical plate (71), a second vertical plate (72) and a first motor (73); the front surface of the processing table (1) is fixedly connected with the first vertical plate (71) and the second vertical plate (72); the first vertical plate (71) is fixedly connected with the first motor (73); the driving end of the first motor (73) passes through the first vertical plate (71) and is fixedly connected with a threaded rod (74); an adjusting block (75) is provided on the outer thread of the threaded rod (74); a sliding block (751) is fixedly connected to the rear surface of the adjusting block (75); a mounting frame (752) is fixedly connected to the top of the adjusting block (75); a guide groove (753) is provided on the top of the mounting frame (752); a mounting frame (76) is slidably sleeved on the mounting frame (752); a fastening block (76) is fixedly connected to the top of the mounting frame (76); 61), a second motor (762) is fixedly connected to one end of the fastening block (761), a first gear (763) is fixedly connected to the driving end of the second motor (762), a first rack (764) is meshed with the first gear (763), the first rack (764) is fixedly connected to the mounting frame (752), two guide plates (765) are fixedly connected to the inner wall of the mounting frame (76), and two limit plates (766) are fixedly connected to the bottom of the mounting frame (76), a fixing block (77) is installed between the two limit plates (766), a laser (78) is fixedly connected to the bottom of the fixing block (77), and two sets of lockers (79) are also connected between the fixing block (77) and the mounting frame (76), and scale lines are provided on the front surface of the processing table (1) and the top of the mounting frame (752); The material pressing mechanism (8) comprises a first rack (81), a second rack (82) and a first pulley (83); the first rack (81) and the second rack (82) are fixedly connected to the rear surface of the processing table (1); the third motor (811) is fixedly connected to the rear surface of the first rack (81); the driving end of the third motor (811) passes through the first rack (81) and is fixedly connected to the first transmission shaft (812); the first pulley (83) is provided on the outer fixed sleeve of the first transmission shaft (812); the second rack (82) is rotatably connected to the second transmission shaft (821) via a bearing; The outer fixed sleeve of the transmission shaft (821) is provided with a second pulley (822), the outer sleeves of the first pulley (83) and the second pulley (822) are provided with a transmission belt (84), the first transmission shaft (812) and the second transmission shaft (821) are both fixedly connected with a first bracket (85), one end of the first bracket (85) is hingedly connected to a second bracket (86), the bottom end of the second bracket (86) is hingedly connected to a pressure plate (87), the bottom of the pressure plate (87) is connected to an adjuster (88), the bottom of the adjuster (88) is connected to a connecting rod (89), and the connecting rod (89) is fixedly connected to a cooling pipe (891).

2. The laser drilling device for producing porous copper foil according to claim 1, characterized in that: The locking device (79) comprises a first vertical rod (791), a first spring (792) and a stopper (793); the first vertical rod (791) is fixedly connected to the first spring (792); one end of the first spring (792) is fixedly connected to the stopper (793); one end of the first vertical rod (791) is integrally connected to the first locking block (794); a second vertical rod (795) is installed on the same side of the first vertical rod (791); one end of the second vertical rod (795) is integrally connected to the second locking block (796); the other end of the first vertical rod (791) is rotatably connected to the fixed block (77) via a pin shaft.

3. The laser drilling device for producing porous copper foil according to claim 2, characterized in that: The top of the first locking block (794) and the bottom of the second locking block (796) are both inclined, and the bottom of the first locking block (794) and the top of the second locking block (796) are parallel to each other. The stopper (793) is fixed to the fixed block (77), and the second vertical rod (795) is fixed to the bottom of the installation frame (76).

4. The laser drilling device for producing porous copper foil according to claim 3, characterized in that: The guide plate (765) is slidably connected to the inside of the guide groove (753), the slider (751) is slidably connected to the inside of the slide groove (4), and one end of the threaded rod (74) is rotatably connected to the second vertical plate (72) through a bearing.

5. The laser drilling device for producing porous copper foil according to claim 4, characterized in that: The inner wall of the limiting plate (766) is provided with a limiting groove, and the limiting block (771) is slidably connected in the limiting groove.

6. The laser drilling device for producing porous copper foil according to claim 5, characterized in that: The regulator (88) comprises a second gear (881), a second rack (882) and a third rack (883); the second rack (882) and the third rack (883) are respectively meshed on both sides of the second gear (881); the front surface of the second rack (882) and the front surface of the third rack (883) are both fixedly connected with an anti-dropping block (884); the top of the second rack (882) is fixedly connected with a roller (885); and the bottom of the second rack (882) is fixedly connected with a second spring (886).

7. The laser drilling device for producing porous copper foil according to claim 6, characterized in that: The second gear (881) is rotatably connected to the tungsten plate (5) via a bearing. Anti-slip grooves are longitudinally provided on the front and rear surfaces of the tungsten plate (5). The anti-slip block (884) is a "T"-shaped structure, and the anti-slip block (884) is slidably connected in the anti-slip groove.

8. The laser drilling device for producing porous copper foil according to claim 7, characterized in that: One end of the second spring (886) is fixedly connected to the top of the connecting rod (89), the bottom end of the third rack (883) is fixedly connected to the top of the connecting rod (89), the cooling pipe (891) is located directly below the tungsten plate (5), and the two ends of the cooling pipe (891) are respectively fixedly connected with a water inlet and a water outlet.

9. The laser drilling device for producing porous copper foil according to claim 8, characterized in that: One end of the first transmission shaft (812) and one end of the second transmission shaft (821) are rotatably connected to one of the side plates (6) via bearings, and the first bracket (85), the second bracket (86) and the pressure plate (87) are symmetrically distributed with respect to the central axis of the tungsten plate (5).

10. A laser drilling method for producing porous copper foil, according to the laser drilling device for producing porous copper foil according to claim 9, characterized in that: The laser drilling method comprises the following steps: S1, the copper foil wound on the foil unwinding roller (2) is horizontally guided by the guide roller (3) and then laid flat on the tungsten plate (5); S2. Using the material pressing mechanism (8) to drive two groups of pressing plates (87) to press down to clamp the two sides of the copper foil laid flat on the tungsten plate (5) to prevent the copper foil from being deformed by heat during the high-temperature laser drilling process, thereby causing deviation in the drilling position. When the two groups of pressing plates (87) are pressed down, they can contact the roller (885) to pull the cooling tube (891) upward. When the cooling tube (891) contacts the bottom of the tungsten plate (5), cooling water is injected into the cooling tube (891) to cool the tungsten plate (5) and the copper foil, thereby further reducing the wrinkles of the copper foil. S3, using the displacement mechanism (7) to control the laser (78) to slide horizontally and vertically, adjusting the laser (78) to an ideal position in accordance with the scale line, and then using the high-temperature laser beam emitted by the laser (78) to perform laser drilling on the copper foil on the tungsten plate (5); S4. After the copper foil on the current tungsten plate (5) is punched, the two sets of pressing plates (87) are driven upward by the material pressing mechanism (8), and the copper foil is continued to be unwound by the foil unwinding roller (2), so that the unwound copper foil can continue to be punched.

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