Fixed-length transverse cutting equipment for electrolytic copper foil processing

Abstract

The invention relates to the field of copper foil cutting equipment, in particular to fixed-length transverse cutting equipment for electrolytic copper foil processing, which comprises a base frame, a U-shaped frame is fixedly mounted in the middle of the base frame, a transverse cutter is arranged on the U-shaped frame through a driving mechanism, and two L-shaped protective covers which are symmetrically arranged left and right are vertically and slidably arranged on the base frame. Ionic wind is blown out through the air supply pipeline, so that static electricity on copper foil can be effectively removed through the ionic wind, the copper cuttings are prevented from being firmly attached to the surface of the copper foil due to electrostatic adsorption, meanwhile, tiny copper cuttings can be blown to an inlet of the air suction pipeline, the copper cuttings are prevented from being separated from the copper foil, and the copper cuttings are prevented from being separated from the copper foil. The air is sucked by the air suction pipeline through negative pressure; in addition, the sticky roller is pushed by the moving assembly to intermittently abut against the cutting edge position of the transverse cutter completing cutting, residual copper cuttings at the cutting edge position are adhered and removed, and therefore it is guaranteed that the transverse cutting device can continuously and stably conduct high-quality transverse cutting on the ultra-thin copper foil.

Description

Technical Field

[0001] This invention relates to the field of copper foil cutting equipment, specifically a fixed-length cross-cutting device for electrolytic copper foil processing. Background Technology

[0002] Electrolysis is a common industrial manufacturing technique for ultra-thin copper foil with a thickness of ≤6μm. Electrolytic copper foil is first deposited on a cathode roller through an electrolytic process to form a green foil. Then, the green foil undergoes a series of surface treatments to meet the performance requirements of copper foil in different application scenarios. After the surface treatment is completed, the ultra-thin copper foil usually needs to be precisely cut into multiple segments of specified lengths by a high-precision guillotine-type cross-cutting machine according to customer needs.

[0003] When cutting ultra-thin copper foil, existing high-precision guillotine-type cross-cutting machines first use a vacuum adsorption platform to firmly fix the flattened ultra-thin copper foil to prevent it from shifting or wrinkling during the cutting process. Then, a servo electric cylinder directly drives a precision guillotine or cross-cutting blade to perform a fast and precise linear cutting motion to complete the fixed-length cutting.

[0004] However, when using a traditional high-precision guillotine-type cross-cutting machine to cross-cut ultra-thin copper foil, a small amount of copper shavings will inevitably be generated at the cutting interface. Since ultra-thin copper foil is prone to static electricity, and the thickness of ultra-thin copper foil makes the copper shavings extremely small, these small copper shavings are very easy to adhere to the cutting edge of the cross-cutting blade and the side of the copper foil surface near the cut under the combined action of electrostatic force and van der Waals force.

[0005] The continuous accumulation of copper shavings on the cutting edge can cause blade contamination and even dulling, directly affecting the accuracy and sharpness of subsequent cutting. This can lead to burrs on the cut surface of extremely thin copper foil, affecting product quality. More seriously, the conductive copper shavings remaining on the surface of the finished copper foil may fall off and become conductive dust during subsequent winding, transportation, and downstream applications (such as lithium battery manufacturing), posing a serious safety hazard such as short circuits.

[0006] Therefore, developing a cross-cutting device that can simultaneously and effectively remove copper shavings during the cutting process is of great significance for ensuring the high-quality production of ultra-thin copper foil. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a fixed-length cross-cutting device for electrolytic copper foil processing, including a base frame, a U-shaped frame fixedly installed in the middle of the base frame, a cross-cutting blade set on the U-shaped frame through a driving mechanism, and two L-shaped protective covers symmetrically arranged vertically on the base frame, the L-shaped protective covers covering the cross-cutting position of the copper foil, and the L-shaped protective covers being provided with an adsorption mechanism for absorbing copper shavings and an adhesion mechanism for cleaning the cross-cutting blade.

[0008] The adsorption mechanism includes an air supply pipe fixedly connected to an L-shaped protective cover, and an air suction pipe fixedly connected to the L-shaped protective cover. The air supply pipe blows ion air into the L-shaped protective cover in a direction close to the cross-cutting blade, so that the ion air removes static electricity from the copper foil and blows copper shavings to the inlet of the air suction pipe.

[0009] The adhesion mechanism includes an adhesive roller disposed inside an L-shaped protective cover via a movable component. A rewinding component is disposed inside the vertical section of the L-shaped protective cover. The movable component pushes the adhesive roller against the cutting edge of the cross-cutting blade to adhere and clean copper shavings.

[0010] The electrostatic charge on the copper foil is eliminated by ion wind and copper shavings are blown to the suction pipe. The sticking roller is pressed against the cutting edge of the cross-cutting blade to remove residual copper shavings, so that the cross-cutting equipment can continuously perform high-quality cross-cutting on the extremely thin copper foil.

[0011] Preferably, the air supply duct is provided with a number of air outlets arranged at equal intervals on the horizontal section of the L-shaped protective cover, and the air intake duct is provided with a number of air intakes arranged at equal intervals on the vertical section of the L-shaped protective cover. The total airflow in the air supply duct is less than that in the air intake duct.

[0012] Preferably, the air outlet of the air supply duct and the air inlet of the air intake duct are staggered, with the air inlet of the air intake duct pointing towards the transverse section of the copper foil.

[0013] Preferably, the L-shaped protective cover has a hollow structure with an opening on the lower side, and the inner cavity of the L-shaped protective cover is connected to the air supply pipe through several air guide pipes.

[0014] Preferably, when the air supply duct is venting, a portion of the ionized air is delivered to the inner cavity of the L-shaped protective cover through the air guide duct, and then blown out along the opening on the lower side of the L-shaped protective cover to form an air curtain that relatively seals the inside of the L-shaped protective cover.

[0015] Preferably, the lower opening of the L-shaped protective cover has an inclined structure, so that the ion air curtain blown out from the opening of the L-shaped protective cover is guided into the interior of the L-shaped protective cover through the inclined structure.

[0016] Preferably, the adhesive roller is a type of tape winding, and the rewind assembly includes a reversing roller and a rewind roller that are rotatably disposed inside the vertical section of the L-shaped protective cover.

[0017] Preferably, the adhesive tape of the sticking roller is wound around the outside of the reversing roller and finally wound onto the rewinding roller. Both sides of the adhesive tape of the sticking roller are coated with adhesive. The rewinding assembly also includes a motor fixedly installed on the front side of the L-shaped protective cover for driving the rewinding roller.

[0018] Preferably, a connecting plate is detachably provided in the horizontal section of the L-shaped protective cover, and a plurality of adhesive rods for adhering copper shavings are arranged in a matrix at the lower part of the connecting plate.

[0019] Preferably, the moving component includes a roller frame that slides left and right and is sealed and inserted into the vertical section of the L-shaped protective cover. The roller frame is rotatably connected to the sticking roller, and the L-shaped protective cover is fixedly equipped with a hydraulic cylinder for driving the roller frame.

[0020] The beneficial effects of this invention are as follows: First, this invention uses an air supply duct to blow ion air into the L-shaped protective cover in the direction close to the cross-cutting blade, so that the ion air can effectively remove static electricity on the copper foil and prevent copper shavings from adhering firmly to the surface of the copper foil due to static adsorption. At the same time, it can blow tiny copper shavings to the inlet of the suction duct, where they are sucked up by the suction duct through negative pressure. In addition, by moving the component, the sticking roller is pushed to intermittently abut against the cutting edge of the cross-cutting blade after cutting, adhering to and removing the copper shavings remaining at the cutting edge, thereby ensuring that this invention can continuously and stably perform high-quality cross-cutting on extremely thin copper foil.

[0021] Second, this invention employs a method of setting several air outlets on the air supply duct and cooperating with several air inlets arranged on the air suction duct to form an airflow circuit that simultaneously supplies and suctions air. By making the total airflow of the air supply duct less than the suction volume of the air suction duct, the air suction duct plays a dominant role in the copper shavings removal process, while the air supply duct assists in guiding and transporting the copper shavings, thereby achieving efficient removal of flying copper shavings.

[0022] Third, this invention employs a motor-driven rewind roller to rotate and wind up the adhesive tape used on the sticking roller, ensuring that the sticking roller can continuously expose a new adhesive surface to contact the cutting edge of the cross-cutting blade, thus ensuring a stable and reliable adhesion and cleaning effect each time. At the same time, the residual adhesiveness in the area of ​​the adhesive tape between the rewind roller and the sticking roller can be used to further adhere copper shavings floating inside the protective cover, thereby improving the collection and removal effect of copper shavings in multiple stages.

[0023] Fourth, by forming an ion air curtain at the lower opening of the L-shaped protective cover, the present invention significantly improves the relative sealing of the internal space of the L-shaped protective cover without directly contacting the extremely thin copper foil, thereby effectively ensuring the stable adsorption effect of the suction pipe on copper shavings; in addition, by setting several adhesive rods inside the L-shaped protective cover, copper shavings flying in the turbulent flow can be adhered and captured, thereby further improving the overall thoroughness of copper shavings cleaning. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a partial cross-sectional view of the base frame, U-shaped frame, cross-cutting blade and L-shaped protective cover in this invention.

[0027] Figure 3 This is a side view of the U-shaped frame, drive mechanism, and cross-cutting blade in this invention.

[0028] Figure 4 This is a schematic diagram of the structure of the U-shaped frame and L-shaped protective cover in this invention.

[0029] Figure 5 This is a schematic diagram of the structure of the L-shaped protective cover, air supply pipe, air intake pipe and motor in this invention.

[0030] Figure 6 This is a partial cross-sectional view of the L-shaped protective cover, rubber rod, hydraulic cylinder, and air guide pipe in this invention.

[0031] Figure 7 This is a partial cross-sectional view of the sticking roller, rewind roller, suction pipe and air supply pipe in this invention.

[0032] Figure 8 This is a partial cross-sectional view of the L-shaped protective cover, rewind roller, sticking roller, and motor in this invention.

[0033] In the diagram: 1. Base frame; 2. U-shaped frame; 3. Drive mechanism; 4. Cross-cutting blade; 5. L-shaped protective cover; 6. Adsorption mechanism; 7. Adhesion mechanism; 51. Air guide pipe; 52. Connecting plate; 61. Air supply pipe; 62. Air suction pipe; 71. Adhesive roller; 72. Rewind assembly; 73. Moving assembly; 521. Glue rod; 721. Reversing roller; 722. Rewind roller; 723. Motor; 731. Roller frame; 732. Hydraulic cylinder. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0035] See Figure 1 , Figure 2 , Figure 3 and Figure 4 A fixed-length cross-cutting device for processing electrolytic copper foil includes a base frame 1, a U-shaped frame 2 fixedly installed in the middle of the base frame 1, a cross-cutting blade 4 mounted on the U-shaped frame 2 via a drive mechanism 3, and two L-shaped protective covers 5 symmetrically arranged vertically on the base frame 1. The L-shaped protective covers 5 cover the cross-cutting position of the copper foil, and the L-shaped protective covers 5 are provided with an adsorption mechanism 6 for absorbing copper shavings and an adhesion mechanism 7 for cleaning the cross-cutting blade 4.

[0036] like Figure 2 and Figure 3As shown, the drive mechanism 3 in this embodiment includes a servo electric cylinder fixedly installed on the upper side of the U-shaped frame 2. The telescopic section of the servo electric cylinder is fixedly connected to the cross-cutting blade 4. By quickly extending its telescopic section, the servo electric cylinder can drive the cross-cutting blade 4 to perform a fast and precise downward linear shearing motion to complete the fixed-length cutting of the ultra-thin copper foil.

[0037] It should be noted that the ultra-thin copper foil is fed onto the base frame 1 using existing feeding equipment, such as a precision unwinding machine, enabling the ultra-thin copper foil to move at a fixed length. This ensures the accuracy of the fixed-length cross-cutting of the ultra-thin copper foil. During cutting, the flattened ultra-thin copper foil is firmly fixed by a vacuum adsorption platform on the base frame 1, preventing deviations during cross-cutting. After cutting, a robotic arm uses vacuum adsorption to remove the cut ultra-thin copper foil segments and move them to the next process position. The base frame 1 is also equipped with a high-sensitivity tension and correction system and an automated control unit to ensure the accurate positioning of the ultra-thin copper foil during cross-cutting. The feeding equipment, vacuum adsorption platform, robotic arm, high-sensitivity tension and correction system, and automated control unit are all commonly used technologies and systems in existing cross-cutting processes, and are not shown in the figure.

[0038] In this embodiment, the L-shaped protective cover 5 is lowered to a suitable position by electric adjustment, and the specific structure is as follows: Figure 1 , Figure 2 and Figure 4 As shown, the L-shaped protective cover 5 is fixedly connected to the synchronization frame via the guide post on it. The guide post is slidably connected to the U-shaped frame 2. A high-precision electric cylinder is fixedly installed on the synchronization frame. The extension section of the high-precision electric cylinder is fixedly connected to the U-shaped frame 2. Therefore, by adjusting the extension length of the extension section of the high-precision electric cylinder, the L-shaped protective cover 5 can be adjusted up and down, so that the lower side of the L-shaped protective cover 5 can be close to the upper side of the copper foil but not in contact with the copper foil.

[0039] See Figure 1 , Figure 5 , Figure 6 and Figure 7 The adsorption mechanism 6 includes an air supply pipe 61 fixedly connected to the L-shaped protective cover 5. The air supply pipe 61 is connected to the ion air supply pump. An air suction pipe 62 is fixedly connected to the L-shaped protective cover 5. The air suction pipe 62 is connected to the dust collector. The dust collector can extract air from the air suction pipe 62, so that the air suction pipe 62 can suck up copper shavings through the negative pressure inside it.

[0040] See Figure 2 , Figure 5 , Figure 6 and Figure 7The air supply duct 61 is provided with several air outlets arranged at equal intervals on the horizontal section of the L-shaped protective cover 5, and the air intake duct 62 is provided with several air intakes arranged at equal intervals on the vertical section of the L-shaped protective cover 5. The total airflow in the air supply duct 61 is less than that in the air intake duct 62. The air outlets of the air supply duct 61 and the air intakes of the air intake duct 62 are staggered. The air intakes of the air intake duct 62 point to the transverse cut of the copper foil.

[0041] When the cross-cutting blade 4 cuts the extremely thin copper foil, the suction pipe 62 directly sucks up the copper shavings flying out during the cutting process through the negative pressure of its suction port. At the same time, the ion air supply pump introduces ion air into the air supply pipe 61. Then, the air supply pipe 61 blows the ion air into the L-shaped protective cover 5 in a direction close to the cross-cutting blade 4. This allows the ion air to remove the static electricity on the copper foil, preventing the copper shavings from adhering firmly to the surface of the copper foil due to static electricity. At the same time, it can blow the flying tiny copper shavings to the inlet of the suction pipe 62 to assist the suction pipe 62 in sucking up the copper shavings.

[0042] The air outlet on the air supply duct 61 and the air inlet on the air intake duct 62 work together to form an airflow circuit that simultaneously supplies and draws air. Since the total airflow of the air supply duct 61 is less than the air intake of the air intake duct 62, the air intake duct 62 plays a dominant role in the copper shavings removal process, while the air supply duct 61 assists in guiding and transporting the copper shavings. This prevents the ion wind from blowing the copper shavings outside the L-shaped protective cover 5, thereby achieving efficient removal of flying copper shavings.

[0043] See Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The adhesion mechanism 7 includes an adhesion roller 71 disposed inside the L-shaped protective cover 5 via a moving component 73. The moving component 73 pushes the adhesion roller 71 against the cutting edge of the cross-cutting blade 4 to adhere and clean copper shavings. The moving component 73 includes a roller frame 731 that slides left and right and is sealed and inserted through the vertical section of the L-shaped protective cover 5. The roller frame 731 is rotatably connected to the adhesion roller 71. The L-shaped protective cover 5 is fixedly equipped with a hydraulic cylinder 732 for driving the roller frame 731.

[0044] When the cross-cutting blade 4 cuts the ultra-thin copper foil and moves upward to reset, the telescopic section of the hydraulic cylinder 732 extends and drives the sticking roller 71 to abut against the cross-cutting blade 4 through the roller frame 731. As the cross-cutting blade 4 moves upward, the sticking roller 71 rolls along the cross-cutting blade 4 to its cutting edge position, thereby allowing the sticking roller 71 to adhere to and remove the copper shavings remaining at the cutting edge, thus ensuring that the present invention can continuously and stably perform high-quality cross-cutting on ultra-thin copper foil.

[0045] It should be noted that a force sensor is installed on the extension section of the hydraulic cylinder 732. The force sensor can monitor the force of the sticking roller 71 against the cross-cutting blade 4 in real time and feed the data back to the host computer. The host computer controls the extension section of the hydraulic cylinder 732 based on the feedback data. On the one hand, it prevents the sticking roller 71 from exerting too much force on the cross-cutting blade 4, which could damage the cutting edge of the cross-cutting blade 4. On the other hand, it ensures that the sticking roller 71 always adheres to the cutting edge of the cross-cutting blade 4, thus ensuring the effect of adhering copper chips.

[0046] It is worth noting that, in order to prevent the two sticking rollers 71 from extending at the same time, causing them to block each other and preventing them from contacting the cutting edge of the cross-cutting knife 4, the two sticking rollers 71 in this embodiment extend alternately. That is, the sticking roller 71 on the right extends to adhere to the copper shavings on the right side of the cutting edge of the cross-cutting knife 4 and then retracts to return to its original position. Then, the sticking roller 71 on the left extends to adhere to the copper shavings on the left side of the cutting edge of the cross-cutting knife 4 and then retracts to return to its original position.

[0047] To ensure the effective adsorption of flying copper shavings by the suction pipe 62, the present invention designs the following structure: (See attached diagram) Figure 5 , Figure 6 , Figure 7 and Figure 8 The L-shaped protective cover 5 has a hollow structure with an opening on the lower side. The inner cavity of the L-shaped protective cover 5 is connected to the air supply pipe 61 through several air guide pipes 51. When the air supply pipe 61 is venting, a portion of the ionized air is sent to the inner cavity of the L-shaped protective cover 5 through the air guide pipes 51 and then blown out along the opening on the lower side of the L-shaped protective cover 5, forming an air curtain that relatively seals the inside of the L-shaped protective cover 5. When the cross-cutting blade 4 moves down to cut, the vertical section of the L-shaped protective cover 5 abuts against the side of the cross-cutting blade 4, thereby improving the sealing performance of the L-shaped protective cover 5 during cutting.

[0048] This ensures that the positive pressure air outside the L-shaped protective cover 5 can only flow into the interior of the L-shaped protective cover 5 through the lower side of the L-shaped protective cover 5. In this process, the airflow carries the copper shavings from the cut of the extremely thin copper foil into the interior of the suction pipe 62, effectively ensuring the stable adsorption effect of the suction pipe 62 on the copper shavings.

[0049] To ensure that the air curtain formed on the lower side of the L-shaped protective cover 5 can both relatively seal the L-shaped protective cover 5 and actively push the outwardly flying copper shavings into the interior of the L-shaped protective cover 5, the present invention designs the following structure: (See reference) Figure 6 and Figure 7 The lower opening of the L-shaped protective cover 5 has a sloping structure, which allows the ion air curtain blown out from the opening of the L-shaped protective cover 5 to be guided into the interior of the L-shaped protective cover 5 through the sloping structure. This causes the ion air curtain guided into the interior of the L-shaped protective cover 5 to push the copper shavings flying outward to flow into the interior of the L-shaped protective cover 5, thereby improving the thoroughness of the adsorption of copper shavings by the suction pipe 62.

[0050] To prevent the airflow from the supply and suction systems inside the L-shaped protective cover 5 from interfering with each other and creating turbulence, which would cause copper shavings to continuously fly around inside the L-shaped protective cover 5 and reduce the thoroughness of copper shaving removal, the present invention designs the following structure: (Continue reading...) Figure 6 and Figure 7 A connecting plate 52 is detachably installed in the horizontal section of the L-shaped protective cover 5. Several adhesive rods 521 for adhering copper shavings are arranged in a matrix at the lower part of the connecting plate 52. This allows the copper shavings that are continuously rotating inside the L-shaped protective cover 5 to collide with the adhesive rods 521 with a very high probability, thereby assisting in the adhesion of the copper shavings through the adhesive rods 521 and improving the thoroughness of copper shaving removal.

[0051] It should be noted that the number of glue rods 521 was determined through experiments conducted by those skilled in the art, enabling the ion wind to quickly push copper shavings through the gaps between the glue rods 521, and also to capture copper shavings that escape from the ion wind and the negative pressure of the suction pipe 62 through several glue rods 521; in addition, the glue rods 521 only perform auxiliary adhesion and removal of the escaped copper shavings, and multiple glue rods 521 are provided, so they can be used for a long time without replacement, and in this embodiment, the connecting plate 52 is connected to the L-shaped protective cover 5 by screws, making disassembly and replacement more convenient.

[0052] To ensure that the sticky roller 71 can continuously expose a new sticky surface and contact the cutting edge of the cross-cutting blade 4, the present invention designs the following structure: (See attached diagram) Figure 5 , Figure 6 , Figure 7 and Figure 8 The adhesive roller 71 is a type of tape winding. The vertical section of the L-shaped protective cover 5 is equipped with a rewind assembly 72. The rewind assembly 72 includes a reversing roller 721 and a rewind roller 722 that are rotatably installed inside the vertical section of the L-shaped protective cover 5. The tape of the adhesive roller 71 is reversed by winding around the outside of the reversing roller 721 and finally wound onto the rewind roller 722. Both sides of the tape of the adhesive roller 71 are coated with glue. The rewind assembly 72 also includes a motor 723 that is fixedly installed on the front side of the L-shaped protective cover 5 for driving the rewind roller 722.

[0053] After the adhesive roller 71 retracts into the L-shaped protective cover 5 each time it resets, the motor 723 drives the rewind roller 722 to rotate and wind the tape on the adhesive roller 71. This pulls the tape taut, so that when the adhesive roller 71 extends again, it can rotate due to the rewind roller 722 fixing and pulling one end of the tape. This exposes a new adhesive surface that contacts the cutting edge of the cross-cutting blade 4. This ensures that the new adhesive surface is exposed only when it is necessary to adhere copper shavings on the cross-cutting blade 4, preventing premature exposure of the new adhesive surface from being contaminated by flying copper shavings and thus reducing the cleaning effect on the cutting edge of the cross-cutting blade 4. This ensures that the adhesive roller 71 consistently and reliably adheres and cleans each time. At the same time, the remaining adhesiveness in the tape area between the rewind roller 722 and the adhesive roller 71 can further adhere copper shavings floating inside the protective cover, thereby improving the collection and removal effect of copper shavings in multiple stages.

[0054] Although this invention increases manufacturing costs and maintenance complexity on traditional cross-cutting equipment, it ensures high quality and consistency of copper foil cutting surfaces through the synergistic effect of efficient copper shaving removal and real-time tool cleaning. This is especially evident in ultra-thin copper foil, which is prone to electrostatic adsorption and has extremely stringent requirements for edge burrs and surface cleanliness. These advantages directly improve product yield and production rhythm stability. The long-term benefits, such as increased production efficiency, reduced raw material loss, and guaranteed product quality, can quickly balance the initial investment costs and have significant practical value in the large-scale production of ultra-thin copper foil.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A fixed-length cross-cutting device for electrolytic copper foil processing, comprising a base frame, a U-shaped frame fixedly installed in the middle of the base frame, and a cross-cutting blade mounted on the U-shaped frame via a driving mechanism, characterized in that... Two L-shaped protective covers are vertically and symmetrically arranged on the base frame. The L-shaped protective covers cover the cross-cutting position of the copper foil. The L-shaped protective covers are equipped with an adsorption mechanism to absorb copper shavings and an adhesion mechanism to clean the cross-cutting blade. The adsorption mechanism includes an air supply pipe fixedly connected to an L-shaped protective cover, and an air suction pipe fixedly connected to the L-shaped protective cover. The air supply pipe blows ion air into the L-shaped protective cover in a direction close to the cross-cutting blade, so that the ion air removes static electricity from the copper foil and blows copper shavings to the inlet of the air suction pipe. The adhesion mechanism includes an adhesive roller disposed inside an L-shaped protective cover via a movable component. A rewinding component is disposed inside the vertical section of the L-shaped protective cover. The movable component pushes the adhesive roller against the cutting edge of the cross-cutting blade to adhere and clean copper shavings. The electrostatic charge on the copper foil is eliminated by ion wind and copper shavings are blown to the suction pipe. The sticking roller is pressed against the cutting edge of the cross-cutting blade to remove residual copper shavings, so that the cross-cutting equipment can continuously perform high-quality cross-cutting on the extremely thin copper foil.

2. The fixed-length cross-cutting equipment for electrolytic copper foil processing according to claim 1, characterized in that, The air supply duct is provided with several air outlets arranged at equal intervals on the horizontal section of the L-shaped protective cover, and the air intake duct is provided with several air intakes arranged at equal intervals on the vertical section of the L-shaped protective cover. The total airflow in the air supply duct is less than that in the air intake duct.

3. The fixed-length cross-cutting equipment for electrolytic copper foil processing according to claim 2, characterized in that, The air outlet of the air supply duct and the air inlet of the air intake duct are staggered, with the air inlet of the air intake duct pointing towards the transverse section of the copper foil.

4. The fixed-length cross-cutting equipment for electrolytic copper foil processing according to claim 1, characterized in that, The L-shaped protective cover has a hollow structure with an opening on the lower side, and the inner cavity of the L-shaped protective cover is connected to the air supply pipe through several air guide pipes.

5. A fixed-length cross-cutting device for electrolytic copper foil processing according to claim 4, characterized in that, When the air supply duct is vented, a portion of the ionized air is sent to the inner cavity of the L-shaped protective cover through the air guide duct, and then blown out along the opening on the lower side of the L-shaped protective cover, forming an air curtain that relatively seals the inside of the L-shaped protective cover.

6. The fixed-length cross-cutting equipment for electrolytic copper foil processing according to claim 5, characterized in that, The lower opening of the L-shaped protective cover has an inclined structure, which allows the ion air curtain blown out from the opening of the L-shaped protective cover to be guided into the interior of the L-shaped protective cover through the inclined structure.

7. The fixed-length cross-cutting equipment for electrolytic copper foil processing according to claim 1, characterized in that, The adhesive roller is in the form of a wound tape, and the rewind assembly includes a reversing roller and a rewind roller that are rotatably disposed inside the vertical section of the L-shaped protective cover.

8. A fixed-length cross-cutting device for electrolytic copper foil processing according to claim 7, characterized in that, The adhesive tape of the sticking roller is wound around the outside of the reversing roller and finally wound onto the rewinding roller. Both sides of the adhesive tape of the sticking roller are coated with glue. The rewinding assembly also includes a motor fixedly installed on the front side of the L-shaped protective cover for driving the rewinding roller.

9. A fixed-length cross-cutting device for electrolytic copper foil processing according to claim 1, characterized in that, A connecting plate is detachably installed in the horizontal section of the L-shaped protective cover, and several adhesive rods for adhering copper shavings are arranged in a matrix at the lower part of the connecting plate.

10. A fixed-length cross-cutting device for electrolytic copper foil processing according to claim 1, characterized in that, The moving component includes a roller frame that slides left and right and is sealed and inserted into the vertical section of the L-shaped protective cover. The roller frame is rotatably connected to the sticking roller, and the L-shaped protective cover is fixedly equipped with a hydraulic cylinder for driving the roller frame.

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