Post-treatment liquid squeezing device

Abstract

The invention discloses a post-treatment liquid extrusion device, and relates to the technical field of copper foil production liquid extrusion, the post-treatment liquid extrusion device comprises a box body, an extrusion assembly used for carrying out liquid extrusion treatment on a copper foil body is arranged in the box body, and a driving assembly used for providing power for the extrusion assembly is arranged on one side of the box body; the two sides of the box body are each provided with a first through groove allowing the copper foil body to penetrate through conveniently. A negative pressure assembly used for improving the liquid squeezing effect on the copper foil body is arranged in the box body. The number of the negative pressure assemblies is two. According to the extrusion roller, collaborative optimization of the full-breadth liquid drainage efficiency and the pressure uniformity of the extrusion roller can be achieved, the liquid drainage effect and the copper foil surface quality are both considered, meanwhile, the liquid drainage grooves distributed in a staggered mode can communicate the middle flow guide groove with the flow guide grooves in the two ends, and follow-up flowing of liquid towards the two ends of the extrusion roller in the negative pressure suction state is accelerated; oxidation and wrinkling caused by liquid residues on the surface of the copper foil are avoided, and the liquid extrusion efficiency and effect are improved.

Description

Technical Field

[0001] This invention relates to the field of copper foil production extrusion technology, and more specifically, to a post-processing extrusion apparatus. Background Technology

[0002] Electrolytic copper foil is a commonly used material in the electronics industry, primarily used in the manufacture of printed circuit boards and other electronic components. The preparation process of electrolytic copper foil mainly includes electrolyte preparation, raw foil manufacturing, surface treatment, slitting and inspection, and packaging.

[0003] The production of copper foil utilizes electrolysis in an electrolytic cell, employing an insoluble anode and a rotating cathode roller. Under the influence of direct current, copper ions in the electrolyte migrate towards the anode and are reduced to copper atoms at the cathode, depositing on the surface of the cathode roller to form copper foil. During the foil production process, the copper foil is exposed to air. Copper is a reactive metal and readily reacts with oxygen in the air to form copper oxide. This oxide layer not only affects the conductivity of the copper foil but may also impact its subsequent processing and use. Therefore, the electrolytic copper foil formed on the cathode roller requires surface treatment after peeling to prevent oxidation. Simultaneously, the surface-treated copper foil carries a large amount of anti-oxidation aqueous solution. If left untreated, this residual solution can seep into the copper foil roll, causing oxidation, wrinkling, and other defects, severely affecting the quality of the copper foil.

[0004] Currently, in existing extrusion devices, the rollers are fixed at both ends by bearings, with the middle section being a suspended stress zone. When the rollers apply pressure to the copper foil, the middle section bends downwards due to the "supported at both ends, compressed in the middle" mechanical structure, easily leading to uneven pressure distribution. This results in excessive pressure at the edges of the copper foil, causing curling, while insufficient pressure in the middle leads to moisture residue. Furthermore, the traditional extrusion rollers rely solely on moisture penetration through the gap between the copper foil and the roller surface. Water is squeezed out from the copper foil surface and flows to both sides along the contact surface between the roller and the copper foil. However, due to insufficient pressure in the middle, the moisture penetration rate is slow, and a water film easily forms between the roller surface and the copper foil, hindering subsequent moisture extrusion. Therefore, a post-processing extrusion device is urgently needed to solve these problems. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a post-processing squeezing device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of this invention is implemented as follows: A post-processing extrusion device includes a housing, the inside of which is provided an extrusion assembly for extruding copper foil, a drive assembly for providing power to the extrusion assembly is provided on one side of the housing, and a first through slot is provided on both sides of the housing to facilitate the passage of the copper foil. The interior of the box is equipped with a negative pressure component to improve the squeezing effect on the copper foil body; The number of negative pressure components is two sets, and the two sets of negative pressure components are respectively set at both ends of the extrusion component. The two sets of negative pressure components work alternately to continuously absorb the residual liquid in the extrusion component. The top of the housing is equipped with a lifting component for adjusting the extrusion spacing in the extrusion assembly.

[0007] Preferably, the extrusion assembly includes two extrusion rollers disposed inside the housing, arranged vertically. The copper foil body passes through the extrusion gap between the two rollers. Each extrusion roller includes a support column and a rubber sleeve. The rubber sleeve is disposed on the outer circumferential wall of the support column. The outer circumferential wall of the rubber sleeve has equally spaced circular drainage grooves. The cross-section of each drainage groove is U-shaped. The drainage grooves are distributed at a spacing that is sparse at both ends and dense in the middle on the outer circumferential wall of the rubber sleeve. The drainage grooves are staggered at both ends of a guide groove located in the middle of the rubber sleeve. The drainage grooves connect the guide groove located in the middle of the rubber sleeve with the guide grooves located at both ends of the rubber sleeve. Both ends of the rubber sleeve have equally spaced circular suction holes that are connected to the drainage grooves.

[0008] Preferably, the drive assembly includes a first fixed base fixedly connected to one outer wall of the housing, a first motor fixedly connected to one outer wall of the first fixed base, a first rotating column fixedly connected to the output end of the first motor, a first gear disk fixedly connected to the outer circumferential wall of the first rotating column, a second gear disk and a sixth gear disk meshing with the outer circumferential wall of the first gear disk, a fifth gear disk meshing with the outer circumferential wall of the sixth gear disk, a first rotating shaft fixedly connected to the inner circumferential wall of the second gear disk, the first rotating shaft fixedly connected to the end of a support column, a second rotating shaft fixedly connected to one outer wall of the fifth gear disk, and the second rotating shaft fixedly connected to the end of another support column.

[0009] Preferably, the lifting assembly includes a second through groove formed on the inner walls of both sides of the housing. A sliding groove is formed on the inner walls of both sides of the second through groove. A slider is slidably connected inside the sliding groove. A bearing seat is fixedly connected to one outer wall of the slider. The first rotating shaft is fixedly connected to the bearing seat. A first threaded sleeve is fixedly connected to one side of the other bearing seat. A threaded rod is threadedly connected to the inner circumference of the first threaded sleeve. A spring is fixedly connected to the bottom outer wall of the first threaded sleeve. The bottom end of the spring is fixedly connected to the top outer wall of the bearing seat. A top plate is fixedly connected to the top outer wall of the housing. A first housing is fixedly connected to the top outer wall of the top plate.

[0010] Preferably, a second motor is fixedly connected to one outer wall of the first housing, a rotating rod is fixedly connected to the output end of the second motor, a first helical gear is fixedly connected to the outer circumference of the rotating rod, a second helical gear meshes with the outer circumference of the first helical gear, the second helical gear is fixedly connected to the threaded rod, a second fixed seat is provided on one side of the housing, the second fixed seat is fixedly connected to the first fixed seat, a second cam is rotatably connected to the outer circumference of the first rotating shaft, the second cam is rotatably connected to the second fixed seat, and the first rotating column passes through the interior of the second fixed seat and the second cam.

[0011] Preferably, a second rotating column is fixedly connected to the end of the support column away from the second rotating shaft, a third gear disk is fixedly connected to the end of the second rotating column, a fourth gear disk meshes with the outer circumferential wall of the third gear disk, and a third rotating column is fixedly connected to the inner circumferential wall of the fourth gear disk. The negative pressure assembly includes a first cam, a connecting rod is rotatably connected to one end of the first cam, a rotating rod is rotatably connected to the end of the connecting rod away from the first cam, a pull-out column is fixedly connected to one end of the rotating rod, mounting seats are fixedly connected to both outer walls of the housing, a negative pressure cylinder is fixedly connected to the mounting seats, a piston is fixedly connected to the end of the pull-out column away from the rotating rod at one end, a drain pipe is fixedly connected to the bottom end of the negative pressure cylinder, a negative pressure shell is fixedly connected to the end of the drain pipe away from the negative pressure cylinder, the negative pressure shell covers the ends of the two extrusion rollers, a drain pipe is inserted into the outer circumferential wall of the negative pressure cylinder, and a one-way valve is provided on the outer circumferential wall of both the drain pipe and the drain pipe.

[0012] The beneficial effects of this invention are: This invention provides a post-processing extrusion device. Through a lifting assembly, a second motor drives a rotating rod to rotate, causing a first helical gear and a second helical gear to mesh and transmit power, rotating a threaded rod. This, in turn, pushes a first threaded sleeve up and down along the threaded rod, cooperating with a slider to slide within a groove. This moves the bearing seat and the connected extrusion rollers. A spring buffers the impact force during adjustment, ensuring precise and stable spacing adjustment, meeting the extrusion requirements of copper foils of different thicknesses, and improving the device's versatility. Furthermore, during the adjustment of the spacing between the two extrusion rollers, the upward movement of the bearing seat drives the second gear disc to rise and fall together. Simultaneously, a second cam is provided on one side of the second gear disc, and the second cam has the same center as the first gear disc. Therefore, during the raising and lowering of the second gear disc, the second and first gear discs remain in a meshed state, enabling adjustment of the spacing between the two extrusion rollers without stopping the machine. This effectively improves the extrusion efficiency for post-processing copper foil bodies of different thicknesses.

[0013] This invention provides a post-processing squeezing device. Through a drive assembly and a squeezing assembly, the drive assembly provides power to the squeezing assembly. Specifically, a first motor drives a first rotating column and a first gear disk to rotate. The first gear disk meshes with a second gear disk and a sixth gear disk, and the sixth gear disk meshes with a fifth gear disk. This drives a first rotating shaft and a second rotating shaft to rotate two upper and lower squeezing rollers in opposite directions. The copper foil body enters from the first through-slots on both sides of the housing. As it passes through the gap between the two squeezing rollers, it is effectively squeezed by a rubber sleeve, extruding the anti-oxidation aqueous solution from the surface. The U-shaped drainage grooves on the rubber sleeve collect more liquid from the central area of ​​the copper foil. Furthermore, the U-shaped drainage grooves on the rubber sleeve are distributed with a "sparse at both ends and dense in the middle" pattern, which precisely matches the deformation caused by the deflection of the squeezing rollers. The characteristic of "high pressure in the middle and low pressure at both ends" means that the densely packed channels in the middle can quickly drain more liquid squeezed out under high pressure in this area, avoiding liquid accumulation or secondary backflow and solving the problem of residual moisture in the middle. On the other hand, the sparse channels at both ends can meet the needs of draining a small amount of liquid at the edges while retaining more effective extrusion area of ​​the rubber sleeve. This avoids the edge pressure dispersion caused by too many channels, and prevents the copper foil edges from curling or incomplete drainage due to insufficient pressure. Ultimately, it achieves synergistic optimization of the full-width drainage efficiency and pressure uniformity of the extrusion roller, taking into account both drainage effect and copper foil surface quality. At the same time, the staggered drainage channels can also connect the central guide channel with the guide channels at both ends, accelerating the flow of liquid to both ends of the extrusion roller under negative pressure suction, avoiding liquid residue on the copper foil surface that could lead to oxidation and wrinkling, and improving extrusion efficiency and effect.

[0014] This invention provides a post-processing liquid extraction device that, through the inclusion of a negative pressure assembly, further enhances the liquid absorption effect. Specifically, a support column drives a second rotating column and a third gear disk to rotate. The third gear disk meshes with a fourth gear disk, causing the third rotating column to drive a first cam to rotate. The first cam pulls a pull-out column via a connecting rod, causing a piston to reciprocate within the negative pressure cylinder. Simultaneously, two sets of negative pressure assemblies located on both sides of the housing operate alternately, continuously absorbing residual liquid from the end of the extrusion roller through a drainage pipe and a negative pressure shell using a liquid absorption hole. A one-way valve ensures that liquid only enters the negative pressure cylinder through the drainage pipe and then exits through the drain pipe, preventing liquid backflow and thoroughly removing residual liquid from the extrusion assembly. This further ensures the quality of the copper foil and achieves high efficiency, stability, and thoroughness in copper foil post-processing liquid extraction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall left side structure of the present invention.

[0017] Figure 2 For the present invention Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 This is a schematic diagram of the overall right side structure of the present invention.

[0019] Figure 4 For the present invention Figure 3 A magnified structural diagram at point B in the middle.

[0020] Figure 5 This is a schematic diagram of the overall longitudinal half-section structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall cross-sectional half-section structure of the present invention.

[0022] Figure 7 For the present invention Figure 6 A magnified structural diagram at point C.

[0023] Figure 8 For the present invention Figure 6 A magnified structural diagram at point D.

[0024] Figure 9 This is a schematic diagram of the overall structure of the extrusion roller of the present invention.

[0025] Figure 10 This is a partial half-sectional view of the negative pressure component of the present invention.

[0026] Figure 11 This is a schematic diagram of the overall left-side partial structure of the present invention.

[0027] Figure 12 For the present invention Figure 11 A magnified structural diagram at point E in the middle.

[0028] In the picture: 1. Housing; 2. Copper foil body; 3. First through groove; 4. First shell; 5. Extrusion roller; 501. Support column; 502. Rubber sleeve; 503. Drainage groove; 504. Suction hole; 505. Guide groove; 6. Negative pressure assembly; 601. Negative pressure cylinder; 602. Mounting base; 603. Connecting rod; 604. Pull-out column; 605. First cam; 607. Drainage pipe; 608. One-way valve; 609. Piston; 610. Drainage pipe; 7. First fixed base; 8. First motor; 9. Second motor; 10. Top plate; 11. Slide groove; 12. 13. Slider; 14. Threaded rod; 15. First threaded sleeve; 16. First rotating column; 17. Second fixed seat; 18. First gear disk; 19. Spring; 20. Second gear disk; 21. Second cam; 22. Second through groove; 23. Third gear disk; 24. Second rotating column; 25. Fourth gear disk; 26. Negative pressure shell; 27. Bearing seat; 28. First rotating shaft; 29. ​​Fifth gear disk; 30. Second rotating shaft; 31. Rotating rod; 32. First helical gear; 33. Second helical gear; 34. Sixth gear disk. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0030] Please see Figures 1-12 A post-processing extrusion device includes a housing 1, an extrusion assembly for extruding copper foil body 2 is provided inside the housing 1, a drive assembly for providing power to the extrusion assembly is provided on one side of the housing 1, and a first through groove 3 is provided on both sides of the housing 1 to facilitate the passage of copper foil body 2. The interior of the housing 1 is equipped with a negative pressure component 6 to improve the squeezing effect on the copper foil body 2; There are two sets of negative pressure components 6. The two sets of negative pressure components 6 are respectively set at both ends of the extrusion component, and the two sets of negative pressure components 6 continuously absorb the residual liquid in the extrusion component by alternating movement. The top of the housing 1 is equipped with a lifting assembly for adjusting the extrusion spacing in the extrusion assembly.

[0031] Furthermore, the extrusion assembly includes two extrusion rollers 5 disposed inside the housing 1, arranged vertically. The copper foil body 2 passes through the extrusion gap between the two rollers. Each extrusion roller 5 includes a support column 501 and a rubber sleeve 502. The rubber sleeve 502 is disposed on the outer circumferential wall of the support column 501. The outer circumferential wall of the rubber sleeve 502 has equally spaced circularly distributed drainage grooves 503. The cross-section of the drainage grooves 503 is U-shaped, and the drainage grooves 503 are spaced apart at both ends and denser in the middle on the outer circumferential wall of the rubber sleeve 502. The rubber sleeve 502 has drainage grooves 503 on its outer circumference. These grooves are staggered at both ends of the guide groove 505 located in the middle of the rubber sleeve 502, connecting the guide groove 505 in the middle to the guide grooves 505 at both ends. Both ends of the rubber sleeve 502 have equally spaced, circularly distributed suction holes 504, which are connected to the drainage grooves 503. The rubber sleeve 502 can effectively compress the surface of the anti-oxidation aqueous solution, thus expelling the solution. The U-shaped drainage groove 503 on the sleeve 502 can collect more liquid from the central area of ​​the copper foil. The U-shaped drainage groove 503 is distributed on the rubber sleeve 502 in a "sparse at both ends and dense in the middle" pattern. This precisely matches the characteristic of "high pressure in the middle and low pressure at both ends" caused by the deflection deformation of the extrusion roller 5. The denser groove in the middle can quickly drain more liquid squeezed out under high pressure, preventing liquid accumulation or secondary backflow and solving the problem of residual moisture in the middle. On the other hand, the sparser groove at both ends, while meeting the need for drainage of a small amount of liquid at the edges, retains... The rubber sleeve 502 has a larger effective extrusion area, which avoids the edge pressure dispersion caused by too many grooves. This prevents the copper foil edges from curling or incomplete drainage due to insufficient pressure. Ultimately, it achieves synergistic optimization of the drainage efficiency and pressure uniformity of the entire extrusion roller 5, taking into account both drainage effect and copper foil surface quality. At the same time, the staggered drainage grooves 503 can also connect the central guide groove 505 with the guide grooves at both ends 505, which can accelerate the flow of liquid to both ends of the extrusion roller 5 under negative pressure suction. This can prevent liquid residue on the copper foil surface from causing oxidation and wrinkling, thereby improving the extrusion efficiency and effect.

[0032] Furthermore, the drive assembly includes a first fixed base 7 fixedly connected to one outer wall of the housing 1. A first motor 8 is fixedly connected to one outer wall of the first fixed base 7. A first rotating column 15 is fixedly connected to the output end of the first motor 8. A first gear disk 17 is fixedly connected to the outer circumference of the first rotating column 15. A second gear disk 19 and a sixth gear disk 34 are respectively meshed on the outer circumference of the first gear disk 17. A fifth gear disk 29 is meshed on the outer circumference of the sixth gear disk 34. A first rotating shaft 28 is fixedly connected to the inner circumference of the second gear disk 19. The first rotating shaft 28 is fixedly connected to a support. At the end of the support column 501, a second rotating shaft 30 is fixedly connected to one side of the outer wall of the fifth gear disk 29. The second rotating shaft 30 is fixedly connected to the end of another support column 501. The driving assembly provides power to the extrusion assembly. Specifically, the first motor 8 drives the first rotating column 15 and the first gear disk 17 to rotate. The first gear disk 17 meshes with the second gear disk 19 and the sixth gear disk 34 respectively. The sixth gear disk 34 then meshes with the fifth gear disk 29, driving the first rotating shaft 28 and the second rotating shaft 30 to drive the upper and lower extrusion rollers 5 to rotate in opposite directions, thereby realizing the extrusion of the copper foil body 2.

[0033] Furthermore, the lifting assembly includes second through grooves 21 formed on the inner walls of both sides of the housing 1. Each inner wall of the second through groove 21 has a sliding groove 11. A slider 12 is slidably connected inside the sliding groove 11. A bearing seat 27 is fixedly connected to one outer wall of the slider 12. A first rotating shaft 28 is fixedly connected to the bearing seat 27. A first threaded sleeve 14 is fixedly connected to one side of the other bearing seat 27. A threaded rod 13 is threadedly connected to the inner circumference of the first threaded sleeve 14. A spring 18 is fixedly connected to the bottom outer wall of the first threaded sleeve 14. The bottom end of the spring 18 is fixedly connected to the top outer wall of the bearing seat 27. The top outer wall of the housing 1 is fixedly connected to a top plate 10, and the top outer wall of the top plate 10 is fixedly connected to a first housing 4. By starting the second motor 9, the rotating rod 31 is driven to rotate, which drives the first helical gear 32 and the second helical gear 33 to mesh and transmit power, causing the threaded rod 13 to rotate, thereby pushing the first threaded sleeve 14 to rise and fall along the threaded rod 13. It works in conjunction with the slider 12 to slide in the slide groove 11, driving the bearing seat 27 and the connected extrusion roller 5 to move. The spring 18 can buffer the impact force during the adjustment process, ensuring that the spacing adjustment is accurate and stable, meeting the extrusion requirements of copper foil of different thicknesses, and improving the versatility of the device.

[0034] Furthermore, a second motor 9 is fixedly connected to one outer wall of the first housing 4. A rotating rod 31 is fixedly connected to the output end of the second motor 9. A first helical gear 32 is fixedly connected to the outer circumference of the rotating rod 31. A second helical gear 33 meshes with the outer circumference of the first helical gear 32. The second helical gear 33 is fixedly connected to the threaded rod 13. A second fixed seat 16 is provided on one side of the housing 1. The second fixed seat 16 is fixedly connected to the first fixed seat 7. A second cam 20 is rotatably connected to the outer circumference of the first rotating shaft 28. The second cam 20 is rotatably connected to the second fixed seat 16. The first rotating column 15 is connected to the second fixed seat 7. The fixed seat 16 and the interior of the second cam 20 pass through the bearing seat 27. During the adjustment of the distance between the two extrusion rollers 5, the upward movement of the bearing seat 27 can drive the second gear disk 19 to rise and fall together. At the same time, the second cam 20 is provided on one side of the second gear disk 19, and the center of the second cam 20 is the same as that of the first gear disk 17. Therefore, during the rising and falling of the second gear disk 19, the second gear disk 19 and the first gear disk 17 can always be kept in a meshing state. This allows the distance between the two extrusion rollers 5 to be adjusted without stopping the machine, which effectively improves the extrusion efficiency during the post-processing of copper foil bodies 2 of different thicknesses.

[0035] A second rotating column 23 is fixedly connected to one end of a further support column 501 away from the second rotating shaft 30. A third gear disk 22 is fixedly connected to one end of the second rotating column 23. A fourth gear disk 25 meshes with the outer circumferential wall of the third gear disk 22. A third rotating column 24 is fixedly connected to the inner circumferential wall of the fourth gear disk 25. The negative pressure assembly 6 includes a first cam 605. A connecting rod 603 is rotatably connected to one end of the first cam 605. The end of the connecting rod 603 away from the first cam 605 rotates. A rotating rod is connected, and a pull-out column 604 is fixedly connected to one end of the rotating rod. Mounting seats 602 are fixedly connected to both outer walls of the housing 1. Negative pressure cylinders 601 are fixedly connected to the mounting seats 602. The end of the pull-out column 604 away from the rotating rod extends into the interior of the negative pressure cylinder 601, and a piston 609 is fixedly connected to this end. A drainage pipe 607 is fixedly connected to the bottom end of the negative pressure cylinder 601. A negative pressure shell 26 is fixedly connected to the end of the drainage pipe 607 away from the negative pressure cylinder 601. The negative pressure shell 26 covers... At the ends of the two extrusion rollers 5, a drain pipe 610 is inserted into the outer circumference of the negative pressure cylinder 601. Both the drain pipe 610 and the drainage pipe 607 are equipped with one-way valves 608. The support column 501 drives the second rotating column 23 and the third gear disk 22 to rotate. The third gear disk 22 meshes with the fourth gear disk 25, causing the third rotating column 24 to drive the first cam 605 to rotate. The first cam 605 pulls the pull-out column 604 via the connecting rod 603, causing the piston 609 to move within the negative pressure cylinder. The cylinder 601 reciprocates, while two sets of negative pressure components 6 located on both sides of the housing 1 operate alternately. Through the drainage pipe 607 and the negative pressure shell 26, the residual liquid at the end of the extrusion roller 5 is continuously drawn through the suction hole 504. The one-way valve 608 ensures that the liquid only enters the negative pressure cylinder 601 from the drainage pipe 607 and is discharged from the drain pipe 610, avoiding liquid backflow and thoroughly removing residual liquid from the extrusion components. This further ensures the quality of the copper foil and achieves high efficiency, stability and thoroughness in copper foil post-processing extrusion.

[0036] In summary, with the help of the above-mentioned technical solution of the present invention, during operation, the distance between the two extrusion rollers 5 is adjusted according to the thickness of the copper foil body 2 by means of the lifting assembly. Specifically, the second motor 9 is started to drive the rotating rod 31 to rotate, which drives the first helical gear 32 and the second helical gear 33 to mesh and transmit power, causing the threaded rod 13 to rotate, thereby pushing the first threaded sleeve 14 to rise and fall along the threaded rod 13. This, together with the slider 12 sliding in the groove 11, drives the bearing seat 27 and the connected extrusion rollers 5 to move. The spring 18 can buffer the impact force during the adjustment process, ensuring that the distance adjustment is accurate and stable, and meeting the needs of copper foils of different thicknesses. To meet the squeezing requirements and improve the versatility of the device, during the adjustment of the distance between the two squeezing rollers 5, the upward movement of the bearing seat 27 can drive the second gear disk 19 to rise and fall together. At the same time, a second cam 20 is provided on one side of the second gear disk 19, and the center of the second cam 20 is the same as that of the first gear disk 17. Therefore, during the raising and lowering of the second gear disk 19, the second gear disk 19 and the first gear disk 17 can always maintain a meshing state, realizing the adjustment of the distance between the two squeezing rollers 5 without stopping the machine, effectively improving the squeezing efficiency during the post-processing of copper foil bodies 2 of different thicknesses. The drive assembly is then activated to power the extrusion assembly. Specifically, the first motor 8 drives the first rotating column 15 and the first gear disk 17 to rotate. The first gear disk 17 meshes with the second gear disk 19 and the sixth gear disk 34, respectively. The sixth gear disk 34 then meshes with the fifth gear disk 29, driving the first rotating shaft 28 and the second rotating shaft 30 to rotate the upper and lower extrusion rollers 5 in opposite directions. The copper foil body 2 enters from the first through slots 3 on both sides of the housing 1. When it passes through the gap between the two extrusion rollers 5, it can be effectively extruded by the rubber sleeve 502, squeezing out the anti-oxidation aqueous solution on the surface. The U-shaped drainage groove 503 on the rubber sleeve 502 can collect more liquid from the middle area of ​​the copper foil. The U-shaped drainage groove 503 is distributed on the rubber sleeve 502 in a "sparse at both ends and dense in the middle" manner, which can accurately match the deformation of the extrusion rollers 5 due to deflection. The product features "high pressure in the middle and low pressure at both ends". The densely packed grooves in the middle can quickly drain more liquid squeezed out by high pressure in this area, avoiding liquid accumulation or secondary backflow, and solving the problem of residual moisture in the middle. On the other hand, the sparsely packed grooves at both ends can meet the needs of draining a small amount of liquid at the edges while retaining more effective extrusion area of ​​the rubber sleeve 502. This avoids the edge pressure dispersion caused by too many grooves, and prevents the copper foil edges from curling or incomplete drainage due to insufficient pressure. Ultimately, it achieves synergistic optimization of the full-width drainage efficiency and pressure uniformity of the extrusion roller 5, taking into account both drainage effect and copper foil surface quality. At the same time, the staggered drainage grooves 503 can also connect the middle guide groove 505 with the guide grooves 505 at both ends, accelerating the flow of liquid to both ends of the extrusion roller 5 under negative pressure suction, avoiding liquid residue on the copper foil surface that causes oxidation and wrinkling, and improving the extrusion efficiency and effect. Simultaneously, during the extrusion process, the negative pressure component 6 is activated, which further enhances the liquid absorption effect. Specifically, the support column 501 drives the second rotating column 23 and the third gear disk 22 to rotate. The third gear disk 22 meshes with the fourth gear disk 25, causing the third rotating column 24 to drive the first cam 605 to rotate. The first cam 605 pulls the pull column 604 through the connecting rod 603, causing the piston 609 to reciprocate inside the negative pressure cylinder 601. At the same time, the two sets of negative pressure components 6 located on both sides of the housing 1 operate alternately. Through the drainage pipe 607 and the negative pressure shell 26, the liquid absorption hole 504 continuously absorbs the residual liquid at the end of the extrusion roller 5. The one-way valve 608 ensures that the liquid only enters the negative pressure cylinder 601 from the drainage pipe 607 and is discharged from the drain pipe 610, avoiding liquid backflow and thoroughly removing the residual liquid from the extrusion components. This further ensures the quality of the copper foil and achieves high efficiency, stability, and thoroughness in the extrusion process of copper foil post-processing.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A post-processing liquid extraction device, comprising a housing (1), characterized in that, The box (1) is equipped with an extrusion assembly for extruding the copper foil body (2). A drive assembly for providing power to the extrusion assembly is provided on one side of the box (1). A first through slot (3) is provided on both sides of the box (1) to facilitate the passage of the copper foil body (2). The box (1) is equipped with a negative pressure component (6) to improve the squeezing effect on the copper foil body (2). The number of negative pressure components (6) is two sets. The two sets of negative pressure components (6) are respectively set at both ends of the extrusion component, and the two sets of negative pressure components (6) complete the continuous absorption of residual liquid in the extrusion component by alternating movement. The top of the box (1) is provided with a lifting component for adjusting the extrusion spacing in the extrusion assembly.

2. The post-processing squeezing device according to claim 1, characterized in that, The extrusion assembly includes two extrusion rollers (5) disposed inside the housing (1), which are arranged vertically. The copper foil body (2) passes through the extrusion gap between the two rollers. Each extrusion roller (5) includes a support column (501) and a rubber sleeve (502). The rubber sleeve (502) is disposed on the outer circumferential wall of the support column (501). The outer circumferential wall of the rubber sleeve (502) is provided with drainage grooves (503) that are evenly spaced and arranged in a circular pattern. The cross-section of the drainage grooves (503) is U-shaped. The drainage grooves (503) are located on the outer circumferential wall of the rubber sleeve (501). 2) The outer circumferential wall of the rubber sleeve (502) is distributed with a spacing that is sparse at both ends and dense in the middle. The outer circumferential wall of the rubber sleeve (502) is provided with a drain groove (503). The drain groove (503) is staggered at both ends of the guide groove (505) located in the middle of the rubber sleeve (502). The drain groove (503) connects the guide groove (505) located in the middle of the rubber sleeve (502) with the guide groove (505) located at both ends of the rubber sleeve (502). Both ends of the rubber sleeve (502) are provided with equally spaced circular suction holes (504). The suction holes (504) are connected to the drain groove (503).

3. The post-processing squeezing device according to claim 2, characterized in that, The drive assembly includes a first fixed seat (7) fixedly connected to the outer wall of one side of the housing (1), a first motor (8) fixedly connected to the outer wall of one side of the first fixed seat (7), a first rotating column (15) fixedly connected to the output end of the first motor (8), a first gear disk (17) fixedly connected to the outer circumference of the first rotating column (15), a second gear disk (19) and a sixth gear disk (34) respectively meshing on the outer circumference of the first gear disk (17), a fifth gear disk (29) meshing on the outer circumference of the sixth gear disk (34), a first rotating shaft (28) fixedly connected to the inner circumference of the second gear disk (19), the first rotating shaft (28) fixedly connected to the end of a support column (501), a second rotating shaft (30) fixedly connected to the outer wall of one side of the fifth gear disk (29), and the second rotating shaft (30) fixedly connected to the end of another support column (501).

4. The post-processing squeezing device according to claim 3, characterized in that, The lifting assembly includes a second through groove (21) opened on the inner walls of both sides of the housing (1). The inner walls of both sides of the second through groove (21) are provided with sliding grooves (11). A slider (12) is slidably connected inside the sliding groove (11). A bearing seat (27) is fixedly connected to one side of the outer wall of the slider (12). The first rotating shaft (28) is fixedly connected to the bearing seat (27). A first threaded sleeve (14) is fixedly connected to one side of the other bearing seat (27). A threaded rod (13) is threadedly connected to the inner circumference of the first threaded sleeve (14).

5. A post-processing squeezing device according to claim 4, characterized in that, A spring (18) is fixedly connected to the bottom outer wall of the first threaded sleeve (14). The bottom end of the spring (18) is fixedly connected to the top outer wall of the bearing seat (27). A top plate (10) is fixedly connected to the top outer wall of the box (1). A first housing (4) is fixedly connected to the top outer wall of the top plate (10).

6. The post-processing squeezing device according to claim 5, characterized in that, A second motor (9) is fixedly connected to one side of the outer wall of the first housing (4). A rotating rod (31) is fixedly connected to the output end of the second motor (9). A first helical gear (32) is fixedly connected to the outer circumference of the rotating rod (31). A second helical gear (33) meshes with the outer circumference of the first helical gear (32). The second helical gear (33) is fixedly connected to the threaded rod (13).

7. A post-processing squeezing device according to claim 6, characterized in that, A second fixed seat (16) is provided on one side of the housing (1). The second fixed seat (16) is fixedly connected to the first fixed seat (7). A second cam (20) is rotatably connected to the outer circumference of the first rotating shaft (28). The second cam (20) is rotatably connected to the second fixed seat (16). The first rotating column (15) passes through the interior of the second fixed seat (16) and the second cam (20).

8. A post-processing squeezing device according to claim 7, characterized in that... The support column (501) is fixedly connected to a second rotating column (23) at one end away from the second rotating shaft (30), and a third gear disk (22) is fixedly connected to one end of the second rotating column (23). A fourth gear disk (25) meshes with the outer circumferential wall of the third gear disk (22), and a third rotating column (24) is fixedly connected to the inner circumferential wall of the fourth gear disk (25).

9. A post-processing squeezing device according to claim 8, characterized in that, The negative pressure assembly (6) includes a first cam (605), one end of which is rotatably connected to a connecting rod (603). The end of the connecting rod (603) away from the first cam (605) is rotatably connected to a rotating rod. One end of the rotating rod is fixedly connected to a pull-out column (604). Mounting seats (602) are fixedly connected to both outer walls of the housing (1). A negative pressure cylinder (601) is fixedly connected to the mounting seats (602). The end of the pull-out column (604) away from the rotating rod extends into the interior of the negative pressure cylinder (601), and a piston (609) is fixedly connected to that end. A drainage pipe (607) is fixedly connected to the bottom end of the negative pressure cylinder (601). A negative pressure shell (26) is fixedly connected to the end of the drainage pipe (607) away from the negative pressure cylinder (601). The negative pressure shell (26) covers the ends of the two extrusion rollers (5).

10. A post-processing squeezing device according to claim 9, characterized in that, A drain pipe (610) is inserted into the outer circumference of the negative pressure cylinder (601), and a one-way valve (608) is provided on the outer circumference of both the drain pipe (610) and the drainage pipe (607).

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