Coating device for carbon-coated aluminum foil

Abstract

The utility model provides a coating device for a carbon-coated aluminum foil. The coating device comprises a frame body, a trough rack, a drop roller, a plate roller, a rubber compression roller, a scraper rack and a striker plate, the printing roller comprises a first roller body and first roller shafts extending outwards from the two ends of the first roller body in the axial direction of the first roller body. The second roller body is arranged opposite to the first roller body, the second roller shafts extend outwards from the two ends of the second roller body in the axial direction of the second roller body, and the receding grooves are formed by sinking the circumferential sides of the two opposite ends of the first roller body in the radial direction of the first roller body. The side, close to the printing roller, of each material blocking plate and the printing roller are arranged in a spaced mode, and the spacing distance is 1-3 mm. When the coating device for the carbon-coated aluminum foil runs, slurry cannot permeate into a blank area on the edge of the aluminum foil, the slurry can be prevented from being thrown out of the containing groove and splashed back to the aluminum foil, the coated aluminum foil can meet requirements, consequences of insufficient soldering and unsoldering of subsequent welding of the carbon-coated aluminum foil and a tab are reduced, and meanwhile, the coating device body is kept clean.

Description

Coating apparatus for carbon-coated aluminum foil Technical Field

[0001] This utility model relates to the technical field of carbon-coated aluminum foil production equipment, and in particular to a coating device for carbon-coated aluminum foil. Background Technology

[0002] In practical applications, aluminum foil needs to be printed on its surface to achieve functions such as protection and enhance aesthetics, such as for cosmetic packaging, beverage cans, and billboards.

[0003] The coating apparatus for carbon-coated aluminum foil is a device for printing on aluminum foil. It mainly includes a frame, a material trough frame installed at the bottom of the frame for holding the ink, an ink delivery roller, a printing plate roller, and a pressure roller, which are supported by the frame from bottom to top and rotatably connected to the frame, and a doctor blade holder fixed to the material trough frame and equipped with a doctor blade. The doctor blade is parallel to the axis of the ink delivery roller and close to the ink delivery roller. The ink delivery roller is used to rotate and transfer the ink to the printing plate roller, the printing plate roller is used to coat the aluminum foil, and the pressure roller is used to cooperate with the printing plate roller to press and transport the aluminum foil.

[0004] In the prior art, when the coating device for carbon-coated aluminum foil coats the aluminum foil by rotating the printing roller and the adhesive roller in opposite directions, the slurry may be thrown out from the rotation direction of the printing roller or seep into the edge area of ​​the aluminum foil from the edge of the adhesive roller. This will result in the presence of slurry in the blank area at the edge of the aluminum foil, and in severe cases, the coated aluminum foil will not meet the requirements.

[0005] Furthermore, during the process of transferring ink from the ink delivery roller into the ink tray, most of the ink is scraped away by the doctor blade on the doctor blade holder. However, under the influence of centrifugal force from the rotation of the printing roller and the surface tension of the ink itself, a small amount of ink will still flow out from the edges of the doctor blade and the printing roller, gradually seeping into the pressure roller. Over time, this will seep into the blank areas at the edges of the aluminum foil. Simultaneously, ink seepage from the edges of the printing roller can also carry ink along the edges of the aluminum foil into the interior of the equipment, resulting in coated aluminum foil that does not meet requirements. Summary of the Invention

[0006] To address the shortcomings of the existing technology, this utility model proposes a new coating device for carbon-coated aluminum foil, which solves the problem that the slurry will penetrate into the blank area at the edge of the aluminum foil during operation of the existing carbon-coated aluminum foil coating device, resulting in the coated aluminum foil not meeting the requirements, thereby improving the product qualification rate.

[0007] This utility model provides a coating device for carbon-coated aluminum foil, which includes a frame, a material trough frame installed at the bottom of the frame and having a receiving trough for holding slurry, an ink delivery roller supported at both ends of the frame and rotatably connected to the frame, a printing roller and a glue pressing roller, a doctor blade holder fixed to the material trough frame and equipped with a doctor blade, and baffle plates fixed to opposite sides of the doctor blade holder along the axial direction of the printing roller. The ink delivery roller, the printing roller and the glue pressing roller are arranged sequentially from bottom to top and their respective axes are parallel to each other.

[0008] The printing roller includes a first roller body and a first roller shaft extending outward from both ends of the first roller body along its axial direction and forming a rotatable connection with the frame. The diameter of the first roller shaft is smaller than the diameter of the first roller body.

[0009] The adhesive roller includes a second roller body that is directly opposite to the first roller body, a second roller shaft that extends outward along the axial direction of the second roller body from both ends and is rotatably connected to the frame, and a relief groove formed by the radial inward recess of the circumferential sides of the opposite ends of the first roller body. The second roller body has the same length as the first roller body.

[0010] Each of the baffle plates extends into the receiving groove from one end near the receiving groove and is spaced apart from the receiving groove. The side of each baffle plate near the printing roller is spaced apart from the printing roller. The distance between the baffle plate and the printing roller is 1 to 3 mm. The end face of each baffle plate and the corresponding end face of the printing roller are on the same plane.

[0011] Preferably, the recess depth of the clearance groove is 1 to 2 mm.

[0012] Preferably, each of the baffle plates includes a plate body and a mounting hole formed through the plate body, the mounting hole being located in the edge region of the plate body; the plate body is fixed to the scraper holder by a fastener passing through the mounting hole.

[0013] Preferably, each plate includes a fixed plate, a first extension plate extending from the side of the fixed plate near the receiving groove toward the side away from the scraper holder, and a second extension plate extending from the side of the first extension plate away from the fixed plate toward the receiving groove. The surface of the second extension plate is parallel to the surface of the fixed plate, and the mounting hole is provided in the fixed plate. The length of the first extension plate along the axis perpendicular to the printing roller is less than the length of the second extension plate along the axis perpendicular to the printing roller. The side of the second extension plate near the printing roller is an arc-shaped surface matching the outer peripheral shape of the printing roller. The side of the second extension plate away from the printing roller is provided with a recessed clearance position toward the printing roller. The clearance position is used to avoid the material tray frame so that the second extension plate extends outward from the material tray frame.

[0014] Preferably, the side of each plate closest to the printing roller is an arc-shaped surface that matches the outer periphery of the printing roller, and the side of each plate away from the printing roller is provided with a recessed clearance that moves toward the printing roller. The clearance is used to avoid the material trough frame so that the plate extends outward from the material trough frame.

[0015] Preferably, the printing roller further includes an end cap sleeved and fixed to the first roller shaft and abutting against the end of the first roller body, the end cap being spaced apart from the ink delivery roller and the adhesive roller.

[0016] Preferably, the end cap includes a sleeve portion that is sleeved and fixed to the first roller shaft and is cylindrical, and a cover portion that extends radially away from the first roller shaft from the circumferential side of the sleeve portion near one end of the first roller shaft and is annular. The diameter of the cover portion is larger than the diameter of the first roller shaft and is spaced apart from the ink delivery roller and the glue pressing roller, respectively.

[0017] Preferably, the mounting holes include a plurality of holes, which are spaced apart and are all oblong or round holes.

[0018] Preferably, the fastener is a screw.

[0019] Compared with the prior art, the coating device for carbon-coated aluminum foil in this invention features inwardly recessed relief grooves designed on the circumference of opposite ends of the first roller body. This prevents the edges of the pressure roller from contacting the printing roller and the aluminum foil, thus preventing the slurry on the printing roller from penetrating to the edge of the pressure roller and leaving slurry in the blank area at the edge of the aluminum foil. Furthermore, by positioning the baffle plate near the printing roller at a distance of 1-3 mm, and ensuring that the end face of each baffle plate is on the same plane as the corresponding end face of the printing roller, the printing roller will not throw slurry into the blank area at the edge of the aluminum foil. Therefore, during operation of the carbon-coated aluminum foil coating device in this invention, the slurry will not penetrate into the blank area at the edge of the aluminum foil, ensuring that the coated aluminum foil meets requirements, improving product qualification rate, and reducing the risk of incomplete or detached welding between the carbon-coated aluminum foil and the electrode tabs. It also prevents slurry from splashing out of the receiving tank and back onto the aluminum foil, keeping the coating device clean. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 is a first lateral perspective view of the coating device for carbon-coated aluminum foil provided in an embodiment of the present invention, excluding the frame;

[0022] Figure 2 is a second lateral perspective view of the coating device for carbon-coated aluminum foil provided in an embodiment of the present invention, excluding the frame;

[0023] Figure 3 is a side view of the coating apparatus for carbon-coated aluminum foil provided in an embodiment of the present invention, including the aluminum foil but excluding the frame;

[0024] Figure 4 is a top view of the coating apparatus for carbon-coated aluminum foil provided in an embodiment of the present invention, excluding the frame;

[0025] Figure 5 is a schematic plan view of the baffle and fixing component in the coating device for carbon-coated aluminum foil provided in the present utility model embodiment 2.

[0026] Figure 6 is another structural plan view of the baffle and fixing component in the coating device for carbon-coated aluminum foil provided in this utility model embodiment 2;

[0027] Figure 7 is a three-dimensional structural diagram of the baffle plate in the coating device for carbon-coated aluminum foil provided in this utility model embodiment 3;

[0028] Figure 8 is a three-dimensional structural diagram of another structure of the baffle plate in the coating device for carbon-coated aluminum foil provided in this utility model embodiment.

[0029] In Figures 1 to 4, 1 is the material trough frame; 11 is the receiving trough; 2 is the ink delivery roller; 3 is the printing roller; 31 is the first roller body; 32 is the first roller shaft; 4 is the glue pressing roller; 41 is the second roller body; 42 is the second roller shaft; 43 is the clearance groove; 5 is the doctor blade frame; 6 is the baffle plate; 7 is the end cap; 71 is the sleeve part; 72 is the closing part; and 8 is the aluminum foil.

[0030] In Figures 5 and 6, 61 is the plate body; 611 is the fixing plate; 612 is the first extension plate; 613 is the second extension plate; 62 is the mounting hole; 63 is the fastener; 64 is the arc-shaped surface; and 65 is the clearance position.

[0031] In Figures 7 and 8, 3611 is the fixing plate; 3612 is the first extension plate; 3613 is the second extension plate; 362 is the mounting hole; 364 is the arc-shaped surface; and 365 is the clearance position. Detailed Implementation

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] It should be noted that the terms "above," "below," "left," and "right" mentioned in the embodiments of this utility model are used to describe the placement state in the accompanying drawings and should not be interpreted as limiting embodiments of this utility model. Furthermore, it should be understood that, in the text, when referring to an element that constitutes "above" or "below" another element, it is possible that the element directly constitutes "above" or "below" the other element, or it is possible that the element constitutes "above" or "below" the other element through an intermediate element.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1

[0037] This utility model provides a coating device for carbon-coated aluminum foil. As shown in Figures 1 to 4, it includes a frame (not shown), a material tray frame 1 installed at the bottom of the frame and having a receiving groove 11 for holding slurry, an ink delivery roller 2, a printing roller 3 and a glue pressing roller 4 respectively supported at both ends of the frame and rotatably connected to the frame, a scraper frame 5 fixed to the material tray frame 1 and equipped with a scraper, and baffle plates 6 respectively fixed to opposite sides of the scraper frame 5 along the axial direction of the printing roller 3.

[0038] The ink delivery roller 2, the printing roller 3, and the adhesive roller 4 are arranged sequentially from bottom to top and their axes are parallel to each other. The ink delivery roller 2 and the printing roller 3 each have a portion located in the receiving groove 11 of the material trough frame 1, or at least the ink delivery roller 2 has a portion located in the receiving groove 11, so that the ink delivery roller 11 can smoothly adhere the slurry in the receiving groove 11 and transfer it to the printing roller 3 during rotation. The ink delivery roller 2 and the printing roller 3 are respectively spaced apart from the material trough frame 1. The printing roller 3 and the adhesive roller 4 press and convey the aluminum foil 8 together through opposite rotation directions. The printing roller 3 also coats the aluminum foil 8 by rotating.

[0039] The printing roller 3 includes a first roller body 31 and first roller shafts 32 extending outward from both ends of the first roller body 31 along its axial direction and forming a rotatable connection with the frame. The diameter of the first roller shafts 32 is smaller than the diameter of the first roller body 31. This design allows part of the roller body of the printing roller 3 to be located in the receiving groove 11 and facilitates a rotatable connection with the frame.

[0040] The adhesive roller 4 includes a second roller body 41 directly opposite the first roller body 31, a second roller shaft 42 extending outward from both ends of the second roller body 41 along its axial direction and rotatably connected to the frame, and relief grooves 43 formed by radial inward recesses from the circumferences of the opposite ends of the first roller body 31. The second roller body 41 has the same length as the first roller body 31, the diameter of the second roller shaft 42 is smaller than the diameter of the second roller body 41, and the distance between the two relief grooves 43 is smaller than the length of the first roller body 31. With this design, the edges of both ends of the adhesive roller 4 will not contact the printing roller 3 and the aluminum foil 8, and the paste on the printing roller 3 will not penetrate to the edge of the adhesive roller 4, nor will the adhesive roller 4 leave paste in the blank area at the edge of the aluminum foil 8.

[0041] The ink delivery roller 2 also includes a roller body and a roller shaft. Its roller body has the same length as the first roller body 31, and its roller body is located in the receiving groove 11.

[0042] In this embodiment, the recess depth of the clearance groove 43 is 1-2 mm, and the diameter of the area of ​​the second roller body 41 corresponding to the clearance groove 43 is larger than the diameter of the second roller shaft 42. This design can prevent the edge of the pressure roller 4 from penetrating the slurry without excessively reducing the structural strength of the pressure roller 4. In addition, the recess depth of the clearance groove 43 can be adaptively adjusted under the condition that it is deformed by pressure but does not contact the printing roller 3.

[0043] Each baffle plate 6 extends into the receiving groove 11 at one end and is spaced apart from the receiving groove 11. The side of each baffle plate 6 closest to the printing roller 3 is also spaced apart from the printing roller 3, with a spacing of 1–3 mm. The end face of each baffle plate 6 is on the same plane as the corresponding end face of the printing roller 3. This design prevents the paste ejected from the printing roller 3 from being thrown out into the blank area at the edge of the aluminum foil 8. Simultaneously, it limits the spacing between the baffle plate 6 and the printing roller 3, thus better blocking the paste and preventing the baffle from scratching the printing roller 3.

[0044] The printing roller 3 also includes an end cap 7 which is sleeved and fixed to the first roller shaft 32 and abuts against the end of the first roller body 31. The end cap 7 is spaced apart from the ink delivery roller 2 and the glue pressing roller 4. There are two end caps 7, which are sleeved and fixed to the two first roller shafts 32 respectively.

[0045] The end cap 7 includes a cylindrical sleeve portion 71 that is sleeved and fixed to the first roller shaft 32, and an annular covering portion 72 that extends radially away from the end of the sleeve portion 71 near the first roller shaft 32. The diameter of the covering portion 72 is larger than the diameter of the first roller shaft 32, and it is spaced apart from the ink delivery roller 2 and the adhesive roller 4. This design prevents the ink from flowing out of the end face of the printing roller 3 into the material trough frame 1, thus avoiding ink waste.

[0046] In this embodiment, the baffle plate 6 and the scraper holder 5 are integrally formed or connected and fixed by welding.

[0047] Compared with the prior art, the coating device for carbon-coated aluminum foil in this embodiment has inwardly recessed relief grooves 43 designed on the periphery of the opposite ends of the first roller body 31. In this way, the edges of the two ends of the pressure roller 4 will not come into contact with the printing roller 3 and the aluminum foil 8. The slurry on the printing roller 3 will not penetrate to the edge of the pressure roller 4, and the pressure roller 4 will not leave slurry in the blank area at the edge of the aluminum foil 8. At the same time, by setting the baffle plate 6 close to the side of the printing roller 3 at a distance from the printing roller 3, and limiting the distance between the baffle plate 6 and the printing roller 3 to 1-3 mm, and the end face of each baffle plate 6 is on the same plane as the corresponding end face of the printing roller 3, the printing roller 3 will not throw the slurry to the blank area at the edge of the aluminum foil 8. Therefore, during the operation of the carbon-coated aluminum foil coating device of this invention, the slurry will not penetrate into the blank area at the edge of the aluminum foil 8, ensuring that the coated aluminum foil 8 meets the requirements, thereby improving the product qualification rate and reducing the consequences of incomplete or detached welding between the carbon-coated aluminum foil 8 and the electrode tab. Simultaneously, it prevents the slurry from splashing out of the receiving tank 11 and back onto the aluminum foil 8, thus keeping the coating device body clean.

[0048] Example 2

[0049] Unlike Embodiment 1, as shown in Figures 5 and 6, each baffle plate 6 includes a plate body 61 and a mounting hole 62 formed through the plate body 61. The mounting hole 62 is located in the edge area of ​​the plate body 61. The plate body 61 is fixed to the scraper holder 5 by a fastener 63 passing through the mounting hole 62. This design facilitates the assembly and disassembly of the baffle plate 6.

[0050] The mounting holes 62 include multiple holes, which are spaced apart and are all oblong or round holes.

[0051] The fastener 63 is a screw or nail.

[0052] Each plate 61 has an arc-shaped surface 64 on the side near the printing roller 3 that matches the outer periphery of the printing roller 3. Each plate 61 has a recessed clearance 65 on the side away from the printing roller 3, which is used to avoid the material tray frame 1 so that the plate 61 extends outward from the material tray frame 1.

[0053] The arc-shaped surface 64 is designed to allow the baffle plate 6 to better fit the outer periphery of the printing roller 3, thereby better preventing the paste from being thrown out to the blank area at the edge of the aluminum foil 8 or the glue roller 4.

[0054] The design of the clearance position 65 allows the second extension plate 613 to extend outward from the material tray 1, so as to better prevent the slurry from being thrown out to the blank area at the edge of the aluminum foil 8 or the glue roller 4.

[0055] Example 3

[0056] Unlike Embodiment 2, as shown in Figure 7, each plate 61 includes a fixed plate 3611, a first extension plate 3612 extending from the side of the fixed plate 3611 near the receiving groove 11 towards the side away from the scraper holder 5, and a second extension plate 3613 extending from the side of the first extension plate 3612 away from the fixed plate 3611 towards the receiving groove 11. The surface of the second extension plate 3613 is parallel to the surface of the fixed plate 3611, and a mounting hole 362 is provided in the fixed plate 3611. The length of the first extension plate 3612 along the axis perpendicular to the printing roller 3 is less than the length of the second extension plate 3613 along the axis perpendicular to the printing roller 3. The side of the second extension plate 3613 near the printing roller 3 is an arc-shaped surface 364 that matches the outer peripheral shape of the printing roller 3. The side of the second extension plate 3613 away from the printing roller 3 is provided with a recessed clearance position 365 that is recessed towards the printing roller 3. The clearance position 365 is used to avoid the material tray frame 1 so that the second extension plate 3613 extends outward from the material tray frame 1. This design allows the plate 61 to extend a certain distance away from the scraper holder 5, while the first extension plate 3612 can better prevent the slurry from being thrown out to the blank area at the edge of the aluminum foil 8 or the glue roller 4.

[0057] As shown in Figure 8, only a portion of the first extension plate 3612 away from the second extension plate 3613 has a shorter length along the axis perpendicular to the printing roller 3 than the length of the first extension plate 3612 along the axis perpendicular to the printing roller 3. This design can improve the structural strength of the plate body 61.

[0058] It should be noted that the various embodiments described above with reference to the accompanying drawings are only illustrative of the present invention and not intended to limit its scope. Those skilled in the art should understand that any modifications or equivalent substitutions made to the present invention without departing from its spirit and scope should be covered within the scope of the present invention. Furthermore, unless the context otherwise requires, singular terms include plural forms, and vice versa. Additionally, unless specifically stated otherwise, all or part of any embodiment may be used in conjunction with all or part of any other embodiment.

Claims

1. A coating apparatus for carbon-coated aluminum foil, the apparatus comprising a frame, a feed trough frame installed at the bottom of the frame and having a receiving trough for holding slurry, an ink delivery roller supported at both ends of the frame and rotatably connected to the frame, a printing roller and a glue pressing roller, a doctor blade holder fixed to the feed trough frame and equipped with a doctor blade, and baffle plates fixed to opposite sides of the doctor blade holder along the axial direction of the printing roller, wherein the ink delivery roller, the printing roller, and the glue pressing roller are arranged sequentially from bottom to top and their respective axes are parallel to each other; characterized in that... The printing roller includes a first roller body and a first roller shaft extending outward from both ends of the first roller body along its axial direction and rotatably connected to the frame. The diameter of the first roller shaft is smaller than the diameter of the first roller body. The adhesive roller includes a second roller body facing the first roller body, a second roller shaft extending outward from both ends of the second roller body along its axial direction and rotatably connected to the frame, and a clearance groove formed by radially inward recesses from the circumferential sides of the opposite ends of the first roller body. The second roller body has the same length as the first roller body. Each baffle plate extends into the receiving groove at one end near the receiving groove and is spaced apart from the receiving groove. The side of each baffle plate near the printing roller is spaced apart from the printing roller. The distance between the baffle plate and the printing roller is 1-3 mm. The end face of each baffle plate and the corresponding end face of the printing roller are on the same plane.

2. The coating apparatus for carbon-coated aluminum foil as described in claim 1, characterized in that, The recess depth of the clearance groove is 1-2 mm.

3. The coating apparatus for carbon-coated aluminum foil as described in claim 2, characterized in that, Each of the baffle plates includes a plate body and a mounting hole formed through the plate body, the mounting hole being located in the edge region of the plate body; the plate body is fixed to the scraper holder by a fastener passing through the mounting hole.

4. The coating apparatus for carbon-coated aluminum foil as described in claim 3, characterized in that, Each of the plates includes a fixed plate, a first extension plate extending from the side of the fixed plate near the receiving groove toward the side away from the scraper holder, and a second extension plate extending from the side of the first extension plate away from the fixed plate toward the receiving groove. The surface of the second extension plate is parallel to the surface of the fixed plate, and the mounting hole is provided in the fixed plate. The length of the first extension plate along the axis perpendicular to the printing roller is less than the length of the second extension plate along the axis perpendicular to the printing roller. The side of the second extension plate near the printing roller is an arc-shaped surface matching the outer peripheral shape of the printing roller. The side of the second extension plate away from the printing roller is provided with a recessed clearance position toward the printing roller. The clearance position is used to avoid the material tray frame so that the second extension plate extends outward from the material tray frame.

5. The coating apparatus for carbon-coated aluminum foil as described in claim 3, characterized in that, Each plate has an arc-shaped surface on the side closest to the printing roller that matches the outer periphery of the printing roller. Each plate has a recessed clearance on the side away from the printing roller, which is used to avoid the material trough frame so that the plate extends outward from the material trough frame.

6. The coating apparatus for carbon-coated aluminum foil as described in claim 1, characterized in that, The printing roller also includes an end cap that is sleeved and fixed to the first roller shaft and abuts against and covers the end of the first roller body. The end cap is respectively spaced apart from the ink delivery roller and the glue pressing roller.

7. The coating apparatus for carbon-coated aluminum foil as described in claim 6, characterized in that, The end cap includes a sleeve portion that is sleeved and fixed to the first roller shaft and is cylindrical, and a cover portion that extends radially away from the first roller shaft from the circumferential side of the sleeve portion near one end of the first roller shaft and is annular. The diameter of the cover portion is larger than the diameter of the first roller shaft and is spaced apart from the ink delivery roller and the adhesive roller, respectively.

8. The coating apparatus for carbon-coated aluminum foil as described in claim 3, characterized in that, The mounting holes include multiple holes, which are spaced apart and are all oblong or round holes.

9. The coating apparatus for carbon-coated aluminum foil as described in claim 3, characterized in that, The fastener is a screw.

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