A slitting and winding device for ultra-thin copper foil production and processing

Abstract

The present application relates to the technical field of copper foil slitting, in particular to a slitting and winding device for ultra-thin copper foil production and processing, which comprises a base plate, a winding-off support and a winding support, a winding-off support is fixedly arranged on one side of the base plate, a winding-off roller loaded with copper foil is detachably installed on the winding-off support, a first electric wheel is arranged on the winding-off support, the first electric wheel is in frictional contact with the winding-off roller and realizes power transmission, a guide rail is fixedly arranged on the other side of the base plate, the winding support is slidably arranged on the guide rail, a hydraulic cylinder is fixedly installed on the base plate, and the piston rod of the hydraulic cylinder is connected with the winding support. The first section of copper foil is accurately pulled to the supporting table and is tightly conveyed by the driving belt, so that effective slitting and winding can be carried out from the starting position, manual intervention is avoided, the slitting and winding efficiency is significantly improved, no waste material section needs to be reserved, the waste of raw materials is reduced, and the material utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of copper foil slitting technology, and more specifically, to a slitting and winding device for the production and processing of ultra-thin copper foil. Background Technology

[0002] Copper foil, as an important functional metallic material, is widely used in lithium-ion batteries, printed circuit boards (PCBs), electromagnetic shielding, flexible electronic devices, and solar cells due to its excellent electrical and thermal conductivity and good ductility. With the development of electronic devices towards thinner and more integrated designs, higher requirements are placed on the thickness uniformity, surface flatness, and slitting accuracy of copper foil. This is especially true for ultra-thin electrolytic copper foil, which is only a few micrometers to tens of micrometers thick. During slitting and winding, defects such as wrinkles, breaks, and interlayer misalignment are easily generated due to mechanical stress, tension fluctuations, or improper operation, seriously affecting product yield and subsequent processing performance. Therefore, developing a high-efficiency, stable, and low-loss slitting and winding device suitable for ultra-thin copper foil has become a key problem urgently needing to be solved in the field of copper foil processing equipment technology.

[0003] Currently available copper foil slitting and rewinding equipment, such as the automated continuous slitting device and method for copper foil processing disclosed in Chinese Patent CN116986390B, while achieving automation of slitting and rewinding to some extent, still has significant shortcomings: First, for multiple narrow strips of ultra-thin copper foil after slitting, manual guidance and pasting onto the corresponding rewinding shaft are still required, which is cumbersome, labor-intensive, and makes it difficult to guarantee the initial bonding quality, easily leading to slippage, displacement, or wrinkling; Second, the wide strips of copper foil from the unwinding end to the cutting entrance are not slitted, forming whole sections of waste material several meters or even more than ten meters long, resulting in a serious waste of high-value raw materials; Third, existing equipment mostly adopts a single-end drive mode of "passive unwinding + active rewinding," lacking the ability to dynamically sense and adaptively adjust the conveying tension, which easily leads to excessive stretching or even breakage of ultra-thin copper foil. Therefore, it is difficult to meet the production requirements of high-end copper foil continuous, high-precision, and high-yield production. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a slitting and winding device for the production and processing of ultra-thin copper foil, which automatically slits and winds the copper foil from the starting position, avoiding manual intervention and waste sections, and improving processing efficiency and material utilization.

[0005] The technical solution is as follows: A slitting and winding device for ultra-thin copper foil production and processing includes a substrate, an unwinding bracket, and a winding bracket. An unwinding bracket is fixedly mounted on one side of the substrate, and an unwinding roller for loading copper foil is detachably mounted on the unwinding bracket. A first electric wheel is mounted on the unwinding bracket, and the first electric wheel makes frictional contact with the unwinding roller to transmit power. A guide rail is fixedly mounted on the other side of the substrate, and a winding bracket is slidably mounted on the guide rail. A hydraulic cylinder is fixedly mounted on the substrate, and the piston rod of the hydraulic cylinder is connected to the winding bracket. A winding roller for winding copper foil is detachably mounted on the winding bracket, and a second electric wheel is mounted on the winding bracket, making frictional contact with the winding roller to transmit power. The surface of the winding roller is coated with an adhesive layer for adhering copper foil. Support members are provided on both the unwinding bracket and the winding bracket, respectively supporting and limiting the unwinding roller and the winding roller on the corresponding bracket. The system includes a roller; it also includes a roller pressing component mounted on the upper part of the winding support. The substrate is provided with a guide roller frame for guiding copper foil near the unwinding support. A support platform for horizontally conveying copper foil is fixedly mounted on the substrate near the winding support. The discharge end of the support platform is tangent to the roller surface of the unwinding roller. A mounting frame is fixedly mounted on the support platform. Multiple knife holders are spaced apart on the mounting frame. An electric slitting knife is mounted on the knife holder. A pressing drive assembly is also provided on the knife holder. The pressing drive assembly is used to convey copper foil material on the support platform. The pressing drive assembly includes a support rod one and a support rod two rotatably connected to both sides of the knife holder. A second spring is provided between the knife holder and the support rod one and the support rod two. A driven wheel is rotatably mounted at the end of each of the support rod one and the support rod two. An electrically driven drive wheel is mounted on the knife holder. A drive belt is wound between the drive wheel and the driven wheel. The drive belt is pressed against the table surface of the support platform under the action of the second spring.

[0006] Optionally, the roller pressing component includes a connecting frame, a pressure roller, and a first spring. The connecting frame is slidably mounted on the upper part of the winding bracket in the vertical direction, and the pressure roller is rotatably connected to the lower part of the connecting frame. The first spring is provided between the winding bracket and the connecting frame, and the pressure roller and the winding roller in the installed state are in rolling contact.

[0007] Optionally, the support member consists of a locking hook plate and an electric push rod. Each of the unwinding and rewinding supports has a mounting slot on one side of its lower portion, and a locking hook plate is rotatably mounted on the other side of its lower portion. The end of the locking hook plate is a hook, and a roller is provided inside the hook. An electric push rod is hinged to each of the unwinding and rewinding supports, and the piston rod of the electric push rod is hinged to the locking hook plate. The locking hook plate is used to limit the unwinding or rewinding roller to roll within the corresponding mounting slot.

[0008] Optionally, a mounting frame is fixedly provided at the mounting bracket corresponding to the support platform. The mounting frame is provided with a number of slitting seats that are the same as the number of blade holders. The slitting seats are used to cooperate with the electric slitting blade to complete the cutting action. The positions of the blade holders and the slitting seats can be adjusted accordingly.

[0009] Optionally, an adsorption mechanism is provided on the support platform. The adsorption mechanism includes a negative pressure adsorption platform embedded in the top of the support platform. The top surface of the negative pressure adsorption platform is densely covered with adsorption holes. An interface for an external vacuum pump is provided on one side of the negative pressure adsorption platform. Rollers are rotatably provided at both ends of the negative pressure adsorption platform. A conveyor belt is wound between the two rollers. The conveyor belt is attached to the upper surface of the negative pressure adsorption platform. The conveyor belt is a microporous and breathable belt. A motor is fixedly installed on one side of the support platform. The output shaft of the motor is connected to one of the rollers.

[0010] Optionally, a flattening roller is rotatably mounted on the side of the guide roller frame near the support platform. The roller surface of the flattening roller is provided with left-handed and right-handed spiral protrusions symmetrically distributed along the axial direction. The two sets of spiral protrusions extend from the middle of the roller body to both ends. The roller shaft is connected to the flattening roller through a differential gear set, which constitutes a speed-increasing transmission mechanism.

[0011] Optionally, a tension compensation mechanism is provided inside the guide roller frame. The tension compensation mechanism includes mounting plates symmetrically fixedly installed on both sides of the guide roller frame. Sliding seats are slidably arranged on both sides of the mounting plates. A tension roller is rotatably installed between the sliding seats on one side, and a bearing block is slidably arranged inside the sliding seat on the other side. A tension roller is also rotatably installed between the bearing blocks. An electric bidirectional lead screw is provided on the mounting plate. The electric bidirectional lead screw is threadedly engaged with the sliding seats on both sides. A pressure sensor is provided on the sliding seat where the bearing block is located. The pressure sensing element of the pressure sensor is in contact with the bearing block. The pressure sensor is electrically connected to the control system of the electric bidirectional lead screw. The pressure sensor is used to detect the tension transmitted from the tension roller to the bearing block in real time.

[0012] Optionally, a guiding mechanism is provided on one side of the winding bracket. The guiding mechanism includes a fixed plate fixedly disposed on the side of the winding bracket near the discharge side. A connecting rod is slidably disposed on the side of the fixed plate facing the winding roller. A guide plate is fixedly connected to the connecting rod. The guide plate is an arc-shaped plate and close to the winding roller. A third spring is disposed between the fixed plate and the guide plate. The guide plate is used to accurately guide the copper foil onto the winding roller for winding.

[0013] The beneficial effects are:

[0014] 1. This invention precisely guides the first section of copper foil to the support platform and presses it with a drive belt, ensuring effective slitting and winding from the starting position. This avoids manual intervention, significantly improves slitting and winding efficiency, and eliminates the need to reserve waste sections, reducing raw material waste and improving material utilization.

[0015] 2. This invention can firmly adsorb and flatten copper foil through a negative pressure adsorption mechanism, preventing wrinkles from forming during the conveying process. In conjunction with the flattening roller, it actively smooths out the wrinkles of the copper foil, improving the quality of copper foil slitting.

[0016] 3. The guide roller frame of the present invention is equipped with a tension compensation mechanism. The tension of the copper foil is detected in real time by a pressure sensor, and the position of the tension roller is automatically adjusted by an electric bidirectional screw. This effectively compensates for the tension fluctuation of the copper foil during high-speed conveying, prevents loosening or breakage, and ensures the cutting accuracy and equipment operation stability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the components of the present invention, including the unwinding bracket, the winding bracket, the guide roller frame, and the support platform.

[0019] Figure 3 This diagram shows the connection relationships of components such as the support platform, electric slitting blade, and clamping drive assembly of the present invention.

[0020] Figure 4 This is a schematic diagram of the electric slitting knife, mounting bracket, knife holder, mounting frame, and slitting seat of the present invention.

[0021] Figure 5 This is a diagram showing the connection relationships of the specific components of the clamping drive assembly of the present invention.

[0022] Figure 6 This is a schematic diagram of the specific components of the winding bracket, hydraulic cylinder, winding roller, and support of the present invention.

[0023] Figure 7 This is a schematic diagram of the support platform, mounting frame, cutting seat, conveyor belt, and motor of the present invention.

[0024] Figure 8 This is an exploded view of the negative pressure adsorption platform, rollers, and conveyor belt of the present invention.

[0025] Figure 9 This is a diagram showing the connection relationship between the roller shaft, conveyor belt, flattening roller, and differential wheel assembly of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of a specific component of the tension compensation mechanism of the present invention.

[0027] Figure 11This is a schematic diagram of the specific components of the winding bracket, winding roller, and guiding mechanism of the present invention.

[0028] Component names and numbers in the diagram: 100-Copper foil, 1-Substrate, 2-Unwinding bracket, 21-Unwinding roller, 22-First electric wheel, 3-Rewinding bracket, 31-Guide rail, 32-Hydraulic cylinder, 33-Rewinding roller, 34-Second electric wheel, 4-Support component, 41-Hook plate, 411-Roller, 42-Electric push rod, 5-Roller pressing component, 51-Connecting frame, 52-Pressure roller, 53-First spring, 6-Guide roller frame, 7-Support platform, 8-Electric slitting knife, 81-Mounting frame, 82-Knife holder, 83-Mounting frame, 84-Slitting seat, 9-Pressure drive assembly, 91-Support 92-Support rod 2, 93-Second spring, 94-Driven wheel, 95-Driving wheel, 96-Drive belt, 10-Adsorption mechanism, 101-Negative pressure adsorption platform, 102-Roller, 103-Conveyor belt, 104-Motor, 11-Flattening roller, 111-Differential wheel set, 12-Tension compensation mechanism, 121-Mounting plate, 122-Sliding seat, 1221-Bearing block, 123-Tension roller, 124-Electric bidirectional lead screw, 125-Pressure sensor, 13-Guide mechanism, 131-Fixed plate, 132-Connecting rod, 133-Guide plate, 134-Third spring. Detailed Implementation

[0029] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0030] A slitting and winding device for the production and processing of ultra-thin copper foil, such as Figures 1-6As shown, the system includes a substrate 1, an unwinding bracket 2, and a winding bracket 3. The unwinding bracket 2 is fixedly mounted on one side of the substrate 1. An unwinding roller 21 for loading copper foil 100 is detachably mounted on the unwinding bracket 2. A first electric wheel 22 is mounted on the unwinding bracket 2, and the first electric wheel 22 makes frictional contact with the unwinding roller 21 to transmit power. A guide rail 31 is fixedly mounted on the other side of the substrate 1, and the winding bracket 3 is slidably mounted on the guide rail 31. A hydraulic cylinder 32 is fixedly mounted on the substrate 1, and the piston rod of the hydraulic cylinder 32 is connected to the winding bracket 3. A take-up roller 33 for winding copper foil 100 is detachably mounted on the take-up bracket 3. A second electric wheel 34 is provided on the take-up bracket 3. The second electric wheel 34 makes frictional contact with the take-up roller 33 to achieve power transmission. The surface of the take-up roller 33 is coated with an adhesive layer for adhering copper foil 100. Support members 4 are provided on both the unwinding bracket 2 and the take-up bracket 3. The support members 4 are used to support and limit the unwinding roller 21 and the take-up roller 33 on the corresponding brackets, respectively. It also includes a roller pressing member 5 installed on the upper part of the take-up bracket 3. The substrate 1 is provided with a section near the unwinding bracket 2. A guide roller frame 6 guides the copper foil 100. A support platform 7 for horizontally conveying the copper foil 100 is fixedly installed on the substrate 1 near the winding bracket 3. The discharge end of the support platform 7 is tangent to the roller surface of the unwinding roller 21. A mounting frame 81 is fixedly installed on the support platform 7. Multiple knife holders 82 are spaced apart on the mounting frame 81. An electric slitting knife 8 is mounted on the knife holder 82. A clamping drive assembly 9 is also installed on the knife holder 82. The clamping drive assembly 9 is used to convey the copper foil 100 material on the support platform 7. The clamping drive assembly 9 includes components rotatably connected to the knife holders. Support rod 1 91 and support rod 2 92 are located on both sides of the base 82. A second spring 93 is provided between the tool holder 82 and support rod 1 91 and support rod 2 92 respectively. Driven wheel 94 is rotatably mounted at the ends of support rod 1 91 and support rod 2 92. An electrically driven driving wheel 95 is mounted on the tool holder 82. A driving belt 96 is wound between the driving wheel 95 and the driven wheel 94. The driving belt 96 is triangularly distributed under the support of support rod 1 91 and support rod 2 92, and the driving belt 96 is pressed against the table surface of the support platform 7 under the action of the second spring 93.

[0031] like Figure 3 and Figure 6 As shown, the support member 4 is composed of a locking hook plate 41 and an electric push rod 42. The unwinding bracket 2 and the winding bracket 3 are both provided with mounting slots on one side of their lower parts. The locking hook plate 41 is rotatably mounted on the other side of the lower parts of the unwinding bracket 2 and the winding bracket 3. The end of the locking hook plate 41 is a hook. A roller 411 is provided on the inner side of the hook of the locking hook plate 41. The electric push rod 42 is hinged on the unwinding bracket 2 and the winding bracket 3. The piston rod of the electric push rod 42 is hinged to the locking hook plate 41. The locking hook plate 41 is used to roll and limit the unwinding roller 21 or the winding roller 33 within the corresponding mounting slot.

[0032] like Figure 2 and Figure 3As shown, the roller pressing component 5 includes a connecting frame 51, a pressure roller 52, and a first spring 53. The connecting frame 51 is slidably mounted on the upper part of the winding bracket 3 in the vertical direction, and the pressure roller 52 is rotatably connected to the lower part of the connecting frame 51. The first spring 53 is provided between the winding bracket 3 and the connecting frame 51. The pressure roller 52 and the winding roller 33 in the installed state are in rolling contact. As the slit copper foil 100 is continuously wound onto the winding roller 33 driven by the second electric wheel 34, the copper foil 100 wound on the winding roller 33 will push the pressure roller 52 upward. At the same time, under the action of the first spring 53, the pressure roller 52 maintains the pressing force on the copper foil 100 wound on the winding roller 33, so that the copper foil 100 can be continuously wound onto the winding roller 33.

[0033] like Figure 4 As shown, a mounting frame 83 is fixedly installed on the support platform 7 at the mounting bracket 81. The mounting frame 83 is equipped with a number of slitting seats 84 that are the same as the number of knife holders 82. The slitting seats 84 are used to cooperate with the electric slitting knife 8 to complete the cutting action. The positions of the knife holder 82 and the slitting seats 84 can be adjusted accordingly so that the electric slitting knife 8 can cut copper foil 100 of different widths.

[0034] like Figure 1 and Figure 11 As shown, a guide mechanism 13 is provided on one side of the winding bracket 3. The guide mechanism 13 includes a fixed plate 131 fixedly disposed on the side of the winding bracket 3 near the discharge side. A connecting rod 132 is slidably disposed on the side of the fixed plate 131 facing the winding roller 33. A guide plate 133 is fixedly connected to the connecting rod 132. The guide plate 133 is an arc-shaped plate and close to the winding roller 33. A third spring 134 is disposed between the fixed plate 131 and the guide plate 133. The guide plate 133 is used to accurately guide the copper foil 100 onto the winding roller 33 for winding.

[0035] When using this device to cut and rewind copper foil 100, the operator first installs the unwinding roller 21 loaded with copper foil 100 and the unloaded rewinding roller 33 onto the unwinding bracket 2 and the rewinding bracket 3 respectively, and uses the support member 4 composed of the locking hook plate 41 and the electric push rod 42 to support and limit them on the corresponding bracket. At this time, the roller 411 at the hook end of the locking hook plate 41 rolls in contact with the unwinding roller 21 and the rewinding roller 33. Then, the first section of copper foil 100 loaded on the unwinding roller 21 is led out, passes around the guide roller frame 6, and finally is laid flat on the table surface of the support platform 7. Then, the multiple drive belts 96 in the pressing drive assembly 9 are lifted one by one, and the first section of copper foil 100 is placed under each lifted drive belt 96. Then, the drive belts 96 are released. Under the action of the reset elastic force of the second spring 93, the drive belts 96 are evenly pressed on the surface of the copper foil 100, providing preparation conditions for subsequent active conveying. When the starting device performs slitting, the first electric wheel 22 on the unwinding bracket 2 drives the unwinding roller 21 to rotate through friction, so that the unwinding roller 21 continuously unwinds the wound copper foil 100. At the same time, the drive wheels 95 on each blade holder 82 in the pressing drive assembly 9 also start to rotate electrically. The rotating drive wheels 95, through the friction between the drive belt 96 and the surface of the copper foil 100, steadily pull the copper foil 100 backward like a conveyor belt. When the copper foil 100 passes under the mounting frame 81, the electric slitting blade 8, which is pre-set in position and started, cooperates with the slitting seat 84 to accurately slit the copper foil 100 into several narrow foil strips. The entire slitting process is completed under the stable conveying of the drive belt 96 and the unwinding of the unwinding roller 21, so that the slitting action is continuous and smooth. The multiple foil strips after being slitted are then sent by the continuing drive belt 96 to the winding area between the winding roller 33 and the pressure roller 52.

[0036] When the slit copper foil 100 is conveyed by the drive belt 96 to the winding area between the take-up roller 33 and the pressure roller 52, the winding process officially begins. Simultaneously, the second electric wheels 34 on both sides of the winding bracket 3 are activated. At this time, the rotating second electric wheels 34 drive the take-up roller 33 to rotate through friction. Meanwhile, because the pressure roller 52 rolls against the take-up roller 33 under the action of the first spring 53, when the slit copper foil 100 passes through the rolling surface between the pressure roller 52 and the take-up roller 33, the pressure roller 52 can press the copper foil 100 onto the adhesive layer on the surface of the take-up roller 33, making the copper foil 100 firmly bonded and wound onto the take-up roller 33 to achieve winding. As the copper foil 100 is wound, the foil roll diameter on the take-up roller 33 will continuously increase. At this time, the hydraulic cylinder 32 on the substrate 1 will slowly push... The entire winding bracket 3 moves backward along the guide rail 31 to ensure that the outer edge of the enlarged roll remains tangential to the discharge end of the support table 7, so that the slit copper foil 100 can be continuously wound onto the winding roller 33. At the same time, the pressure roller 52 on the winding bracket 3 will be pushed upward as the diameter of the foil roll on the winding roller 33 increases. Under the action of the first spring 53, the pressure roller 52 applies a pressing force to the copper foil 100 wound on the winding roller 33 to ensure that the copper foil 100 can be wound tightly. During the entire winding process, the arc-shaped guide plate 133 of the guide mechanism 13 is always in contact with the surface of the copper foil 100 with the gradually increasing diameter under the pressure of the third spring 134, accurately guiding the foil to the correct winding position of the winding roller 33, effectively preventing the copper foil 100 from deviating or loosening during winding.

[0037] like Figure 4 , Figure 7 and Figure 8 As shown, an adsorption mechanism 10 is provided on the surface of the support platform 7. The adsorption mechanism 10 includes a negative pressure adsorption platform 101 embedded in the top of the support platform 7. The top surface of the negative pressure adsorption platform 101 is densely covered with adsorption holes. An interface for an external vacuum pump is provided on one side of the negative pressure adsorption platform 101. Rollers 102 are rotatably mounted at both ends of the negative pressure adsorption platform 101. A conveyor belt 103 is wound between the two rollers 102. The conveyor belt 103 is attached to the upper surface of the negative pressure adsorption platform 101 and is a microporous, breathable belt. A motor 104 is fixedly installed on one side, and the output shaft of the motor 104 is connected to one of the roller shafts 102. The copper foil 100 is laid flat on the breathable conveyor belt 103, and then the interface of the negative pressure adsorption platform 101 is connected to a vacuum pump. The top surface of the negative pressure adsorption platform 101 generates an adsorption force that can adsorb the flattened copper foil 100 onto the conveyor belt 103. With the help of the motor 104 driving the roller shaft 102 to rotate, the conveyor belt 103 can stably adsorb the copper foil 100 for conveying, reducing the risk of wrinkles on the copper foil 100 during the conveying process.

[0038] like Figure 1 and Figure 9As shown, a flattening roller 11 is rotatably mounted on the side of the guide roller frame 6 near the support platform 7. The roller surface of the flattening roller 11 is provided with left-handed and right-handed spiral protrusions symmetrically distributed along the axial direction. The two sets of spiral protrusions extend from the middle of the roller body to both ends. The roller shaft 102 is connected to the flattening roller 11 through the differential wheel set 111, which constitutes a speed-increasing transmission mechanism. When the motor 104 drives the conveyor belt 103 to absorb and transport copper foil 100 through the roller shaft 102, the roller shaft 102 will synchronously drive the flattening roller 11 to rotate through the differential wheel set 111. Under the action of the differential wheel set 111, the rotation speed of the flattening roller 11 is slightly higher than the transmission speed of the conveyor belt 103 to the copper foil 100. At this time, the flattening roller 11 uses bidirectional spiral friction to smooth the wrinkles on the copper foil 100. The smoothed copper foil 100 is absorbed when it enters the conveyor belt 103, thereby avoiding the wrinkles from affecting the cutting quality of the copper foil 100.

[0039] like Figure 1 , Figure 2 and Figure 10 As shown, a tension compensation mechanism 12 is provided inside the guide roller frame 6. The tension compensation mechanism 12 includes mounting plates 121 symmetrically fixed on both sides of the guide roller frame 6. Sliding seats 122 are slidably arranged on both sides of the mounting plates 121. A tension roller 123 is rotatably installed between the sliding seats 122 on one side, and a bearing block 1221 is slidably arranged inside the sliding seat 122 on the other side. A tension roller 123 is also rotatably installed between the bearing blocks 1221. An electric bidirectional lead screw 124 is provided on the mounting plate 121. The electric bidirectional lead screw 124 is threadedly engaged with the sliding seats 122 on both sides. A pressure sensor 125 is provided on the sliding seat 122 where the bearing block 1221 is located. The pressure sensor 125 senses pressure... The component and bearing block 1221 are in contact. The control system of pressure sensor 125 and electric bidirectional lead screw 124 is electrically connected. Pressure sensor 125 is used to detect the pressure transmitted from tension roller 123 to bearing block 1221 in real time. When the control system detects that the actual tension value of the copper foil 100 wound on tension roller 123 is lower than its set tension value through the signal fed back by pressure sensor 125, it controls electric bidirectional lead screw 124 to rotate in the forward direction. Electric bidirectional lead screw 124 drives the sliding seats 122 at both places to move outward to increase the distance between the two tension rollers 123 and adjust the tension of copper foil 100 on them until the actual tension value of copper foil 100 is restored to the set range.

[0040] To improve the quality of the copper foil 100 during slitting and winding, the copper foil 100 will bypass the tension roller 123 in the tension compensation mechanism 12 and the flattening roller 11 on the guide roller frame 6. Then, the control system presets a suitable tension range for the copper foil 100 during slitting and winding. When the device is running, the control system uses a pressure sensor 125 to provide feedback on the tension signal of the conveyed copper foil. If the detected tension value is lower than the preset tension range, the pressure sensor 125 sends a feedback signal to the control system, which then activates the electric bidirectional lead screw 124 to rotate forward, driving the sliding seats 122 at both ends to move outward, thereby tensioning the copper foil 100 and compensating for the slack generated during transport. If the detected tension value is higher than the preset tension range, the pressure sensor 125 also sends a feedback signal, and the control system instructs the electric bidirectional lead screw 124 to rotate in the opposite direction, driving the sliding seats 122 at both ends to move inward, thereby relaxing the copper foil 100 and eliminating its overly tight state. When the copper foil 100 travels to the support table 7... At the feeding end, the motor 104 drives the roller 102 to rotate, causing the microporous permeable conveyor belt 103 to run on the surface of the negative pressure adsorption platform 101. At the same time, the external vacuum pump starts, causing the negative pressure adsorption platform 101 to generate adsorption force. The generated adsorption force penetrates the micropores on the conveyor belt 103, firmly adsorbing and flattening the copper foil 100 on the surface of the belt. This adsorption can effectively suppress the displacement and wrinkle formation of the copper foil 100. Meanwhile, the rotating roller 102 drives the flattening roller 11 to rotate through the differential speed wheel set 111. The flattening roller 11 rotates at a speed slightly higher than that of the roller shaft 102. Since the surface of the flattening roller 11 is provided with left-handed and right-handed symmetrically distributed spiral protrusions, when it rotates at high speed, it applies tensile stress in opposite directions to both ends of the flattening roller 11 through friction with the surface of the copper foil 100, thereby effectively eliminating transverse wrinkles and achieving dynamic flattening. Thus, the copper foil 100, which has been protected by precise tension compensation, active flattening and negative pressure adsorption fixation, can be cut and wound in a flat and constant tension state.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrathin copper foil production processing slitting and winding device, comprising a base plate (1), one side of the base plate (1) is fixedly provided with a unwinding support (2), a unwinding roller (21) is installed on the unwinding support (2), a first motorized wheel (22) for driving the unwinding roller (21) is arranged on the unwinding support (2), the other side of the base plate (1) is provided with a guide rail (31), a winding support (3) is slidably arranged on the guide rail (31), a hydraulic cylinder (32) is fixedly arranged on the base plate (1), the piston rod of the hydraulic cylinder (32) is connected with the winding support (3), a winding roller (33) is installed on the winding support (3), a second motorized wheel (34) for driving the winding roller (33) is arranged on the winding support (3), and supporting pieces (4) are arranged on the unwinding support (2) and the winding support (3); characterized in that It also includes a roller pressing piece (5) arranged on the winding support (3), a guide roller support (6) is arranged on the base plate (1) close to the unwinding support (2), a supporting table (7) is arranged on the base plate (1) close to the winding support (3), a mounting bracket (81) is fixedly arranged on the supporting table (7), a plurality of knife seats (82) are arranged on the mounting bracket (81) at intervals, an electric slitting knife (8) and a pressing driving assembly (9) are assembled on the knife seat (82); The pressing driving assembly (9) comprises a first supporting rod (91) and a second supporting rod (92) rotatably arranged on both sides of the knife seat (82) respectively, a second spring (93) is arranged between the knife seat (82) and the first supporting rod (91) and the second supporting rod (92) respectively, a driven wheel (94) is installed at the end of the first supporting rod (91) and the second supporting rod (92), a driving wheel (95) is installed on the knife seat (82), and a driving belt (96) is wound between the driving wheel (95) and the driven wheel (94); An installation frame (83) is fixedly arranged on the supporting table (7) corresponding to the mounting bracket (81), a plurality of slitting seats (84) corresponding to the number of the knife seats (82) are arranged in the installation frame (83), and the slitting seats (84) are used for cooperating with the electric slitting knife (8) to complete the cutting action; An adsorption mechanism (10) is arranged on the table top of the supporting table (7), the adsorption mechanism (10) comprises a negative pressure adsorption table (101) embedded in the top of the supporting table (7), a plurality of adsorption holes are densely arranged on the top surface of the negative pressure adsorption table (101), an interface connected with a vacuum pump is arranged on one side of the negative pressure adsorption table (101), roller shafts (102) are rotatably arranged at both ends of the negative pressure adsorption table (101), a conveying belt (103) is wound between the two roller shafts (102), the conveying belt (103) is attached to the upper surface of the negative pressure adsorption table (101), the conveying belt (103) is a microporous breathable belt body, a motor (104) is fixedly installed on one side of the supporting table (7), and the output shaft of the motor (104) is connected with one of the roller shafts (102). The flattening roller (11) is rotatably installed on one side of the support table (7) close to the guide roller frame (6), the roller surface of the flattening roller (11) is provided with left-handed and right-handed helical protrusions symmetrically distributed along the axial direction, the roller shaft (102) is connected with the flattening roller (11) through the differential gear set (111), and the differential gear set (111) forms a speed increasing transmission mechanism.

2. The slitting and winding device for ultra-thin copper foil production and processing according to claim 1, characterized in that, The roller pressing piece (5) comprises a connecting frame (51), a pressing roller (52) and a first spring (53), the connecting frame (51) is slidably installed on the upper portion of the winding support (3), the pressing roller (52) is rotatably connected to the lower portion of the connecting frame (51), the first spring (53) is arranged between the winding support (3) and the connecting frame (51), and the pressing roller (52) is in rolling contact with the winding roller (33) in the installed state.

3. The slitting and winding device for ultra-thin copper foil production and processing according to claim 1, characterized in that, The support piece (4) is composed of a lock hook plate (41) and an electric push rod (42), the winding support (2) and the winding support (3) are each provided with a mounting clamping groove on one side of the lower portion, the winding support (2) and the winding support (3) are each rotatably provided with the lock hook plate (41) on the other side of the lower portion, the end portion of the lock hook plate (41) is a hook, the inner side of the hook is provided with a roller (411), the winding support (2) and the winding support (3) are hingedly provided with the electric push rod (42), the piston rod of the electric push rod (42) is hingedly connected with the lock hook plate (41), and the lock hook plate (41) is used for rolling limiting the winding roller (21) or the winding roller (33) in the corresponding mounting clamping groove.

4. The slitting and winding device for ultra-thin copper foil production and processing according to claim 1, characterized in that, The tension compensation mechanism (12) is arranged in the guide roller frame (6), the tension compensation mechanism (12) comprises installation plates (121) symmetrically and fixedly installed on the two sides of the guide roller frame (6), sliding seats (122) are slidably arranged on the two sides of the installation plate (121), a tension roller (123) is rotatably installed between the sliding seats (122) on one side, bearing blocks (1221) are slidably arranged in the sliding seats (122) on the other side, tension rollers (123) are also rotatably installed between the bearing blocks (1221), an electric bidirectional screw rod (124) is arranged on the installation plate (121), the electric bidirectional screw rod (124) is in threaded connection with the sliding seats (122) on the two sides, a pressure sensor (125) is arranged on the sliding seat (122) where the bearing block (1221) is located, the pressure sensing element of the pressure sensor (125) is in contact with the bearing block (1221), and the control system of the pressure sensor (125) and the electric bidirectional screw rod (124) is electrically connected.

5. The slitting and winding device for ultra-thin copper foil production and processing according to claim 1, characterized in that, A guide mechanism (13) is provided on one side of the winding bracket (3). The guide mechanism (13) includes a fixed plate (131) fixed on the winding bracket (3) near the discharge side. A connecting rod (132) is slidably provided on the side of the fixed plate (131) facing the winding roller (33). A guide plate (133) is fixedly connected to the connecting rod (132). The guide plate (133) is an arc-shaped plate and close to the winding roller (33). A third spring (134) is provided between the fixed plate (131) and the guide plate (133). The guide plate (133) is used to accurately guide the copper foil (100) onto the winding roller (33) for winding.

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