Edge tearing prevention device for ultrathin lithium battery copper foil production

Abstract

An anti-edge-tearing device for ultrathin lithium battery copper foil production relates to the technical field of electrolytic copper foil production, and comprises a rack and a mounting rack, the inner side of the rack is rotatably connected with a cathode roller through a rotating shaft, the inner side of the mounting rack is rotatably provided with a polishing roller, the end part of the mounting rack is provided with a stepping motor, and the end part of the mounting rack is provided with a polishing roller; a stepping motor is arranged on the rack, an output shaft of the stepping motor is fixedly connected with the end of a roller shaft of the polishing roller, O-shaped grooves in the end of the cathode roller are filled with O-shaped rings, the number of the O-shaped rings in the same O-shaped groove is two, the two O-shaped rings are connected in a sleeved mode, and height adjusting mechanisms are symmetrically installed on the left side and the right side of the rack. The edge tearing problem caused by the adhesion phenomenon can be avoided, the roll length of the ultrathin lithium battery copper foil of 6-8 microns is prolonged by avoiding the edge tearing phenomenon, and the slitting frequency in the production process can be reduced by prolonging the meter number of the electrolytic copper foil, so that the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic copper foil production, in particular to an anti-tearing edge device for producing ultra-thin lithium battery copper foil. Background Art

[0002] Ultra-thin lithium battery copper foil has been widely used in lithium-ion batteries due to its excellent conductivity and low weight. However, due to its extremely thin thickness, it is prone to breakage and curling during the production process, which limits the extension of its length. The longer the length of the copper foil, the more batteries can be produced in the same time, thereby improving production efficiency. At the same time, a longer copper foil roll can reduce the number of roll changes during the production process, reduce operational difficulty and production costs. Therefore, extending the length of ultra-thin lithium battery copper foil is of great significance to improving production efficiency and reducing costs. To this end, we propose an anti-tear edge device for the production of ultra-thin lithium battery copper foil. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an anti-tearing edge device for the production of ultra-thin lithium battery copper foil, which can avoid the tearing edge problem caused by adhesion, and extend the roll length of 6-8μm ultra-thin lithium battery copper foil by avoiding the tearing edge phenomenon. By extending the number of meters of electrolytic copper foil, the number of slitting times in the production process can be reduced, thereby reducing production costs and improving production efficiency, and can effectively solve the problems in the background technology.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] An anti-tearing edge device for producing ultra-thin lithium battery copper foil comprises a frame and a mounting frame, wherein a cathode roller is rotatably connected to the inner side of the frame via a rotating shaft, a polishing roller is rotatably mounted on the inner side of the mounting frame, a stepping motor is mounted on the end of the mounting frame, and the output shaft of the stepping motor is fixedly connected to the roller shaft end of the polishing roller, an O-ring is filled in the O-shaped groove at the end of the cathode roller, there are two O-rings in the same O-shaped groove, and the two O-rings are sleeved with each other, height adjustment mechanisms are symmetrically mounted on the left and right sides of the frame, a guide roller is rotatably mounted on the adjustment part of the height adjustment mechanism, and the guide roller is pressed on the O-ring, a translation mechanism is mounted on the front side of the frame, the mounting frame is fixed to the side of the moving part of the translation mechanism, a power switch group is mounted on the side of the frame, and the power switch group is electrically connected to an external power supply.

[0006] Furthermore, the translation mechanism includes a guide groove and a transmission seat, the guide groove is opened on the front side of the frame, the transmission seat is slidably connected to the guide groove, and the mounting frame is fixed to the side of the transmission seat.

[0007] Furthermore, the translation mechanism also includes a servo motor and a screw rod. The servo motor is installed on the side of the frame. The screw rod is rotatably installed on the inner side of the guide groove. The screw rod is threadedly connected to the transmission seat. The output shaft of the servo motor is fixedly connected to the end of the screw rod. The servo motor is electrically connected to the power switch group.

[0008] Furthermore, the height adjustment mechanism includes a guide rod and a mounting seat, the end of the guide rod is fixedly connected to the frame, the mounting seat is slidably connected to the guide rod up and down, and the guide roller is rotatably mounted on the side of the mounting seat.

[0009] Furthermore, the height adjustment mechanism also includes a scale, which is arranged on the surface of the guide rod and distributed along the axial direction of the guide rod.

[0010] Furthermore, the height adjustment mechanism also includes an electric push rod, which is installed on the top of the frame, and the telescopic end of the electric push rod is fixedly connected to the top of the mounting seat, and the electric push rod is electrically connected to the power switch group.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the anti-tearing edge device for the production of ultra-thin lithium battery copper foil has the following advantages: when the cathode roller is in operation, the two O-rings are in contact and fill the O-groove together, thereby enhancing the sealing effect of the O-ring and preventing the tank liquid from entering the tank to cause edge sticking. The polishing roller is translated to reduce the roughness of the edge of the cathode roller and prevent the copper foil from sticking to the edge of the cathode roller and causing edge tearing. The height of the guide roller is adjusted to trim the O-ring filling in the O-groove. state, thereby improving the sealing of the O-ring and avoiding the edge tearing caused by copper plating on the titanium edge of the O-ring. A small diameter O-ring is filled in the O-ring, and the two O-rings are in contact and fill the O-groove together to enhance the sealing effect of the O-ring and avoid the groove liquid entering the groove to cause edge sticking. By avoiding the edge tearing phenomenon, the roll length of the 6-8μm ultra-thin lithium battery copper foil can be extended. By extending the number of meters of the electrolytic copper foil, the number of slitting times in the production process can be reduced, thereby reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a three-dimensional side structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the partial structure of the O-ring of the utility model.

[0015] In the figure: 1-frame, 2-power switch group, 3-rotating shaft, 4-height adjustment mechanism, 41-scale, 42-mounting seat, 43-guide rod, 44-electric push rod, 5-translation mechanism, 51-servo motor, 52-guide groove, 53-screw rod, 54-transmission seat, 6-O-ring, 7-cathode roller, 8-mounting frame, 9-guide roller, 10-stepping motor, 11-polishing roller. DETAILED DESCRIPTION

[0016] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0017] See also Figure 1-3The present embodiment provides a technical solution: an anti-tearing edge device for the production of ultra-thin lithium copper foil, comprising a frame 1 and a mounting frame 8, wherein a cathode roller 7 is rotatably connected to the inner side of the frame 1 through a rotating shaft 3, a polishing roller 11 is rotatably mounted on the inner side of the mounting frame 8, a stepping motor 10 is mounted on the end of the mounting frame 8, and the output shaft of the stepping motor 10 is fixedly connected to the roller shaft end of the polishing roller 11, an O-ring 6 is filled in the O-shaped groove at the end of the cathode roller 7, there are two O-rings 6 in the same O-shaped groove, the two O-rings 6 are mutually sleeved, and height adjustment mechanisms are symmetrically mounted on the left and right sides of the frame 1. The height adjustment mechanism 4 is provided with a guide roller 9 which is rotatably mounted on the adjusting part of the height adjustment mechanism 4, and the guide roller 9 is pressed on the O-ring 6. The front side of the frame 1 is provided with a translation mechanism 5, and the mounting frame 8 is fixed on the side of the moving part of the translation mechanism 5. The side of the frame 1 is provided with a power switch group 2 which is electrically connected to an external power supply. The output shaft of the stepper motor 10 drives the polishing roller 11 to rotate, so that the polishing roller 11 performs a polishing operation. The physical properties of the copper foil are regulated by controlling the ratio of the brightener to the single unit of the control system, and the control ratio is about 1:2. The O-ring 6 is pasted and filled in the O-groove. When During the operation of the cathode roller 7, the two O-rings 6 are in contact with each other and fill the O-shaped groove together, thereby enhancing the sealing effect of the O-ring 6 and preventing the groove liquid from entering the groove to cause edge sticking. The polishing roller 11 is translated to reduce the edge roughness of the cathode roller 7 and prevent the copper foil from sticking to the edge of the cathode roller 7 and causing edge tearing. The filling state of the O-ring 6 in the O-shaped groove is trimmed by adjusting the height of the guide roller 9, thereby improving the sealing of the O-ring 6 and preventing the O-ring 6 from being copper-plated on the titanium edge and causing edge tearing. A small-diameter O-ring 6 is then filled in the O-ring 6, and the two O-rings 6 are in contact with each other. Contact and fill the O-shaped groove together to enhance the sealing effect of the O-ring 6, avoid the groove liquid entering the groove and causing edge sticking, and extend the roll length of the 6-8μm ultra-thin lithium battery copper foil by avoiding the edge tearing phenomenon. By extending the number of meters of the electrolytic copper foil, the number of slitting times in the production process can be reduced, thereby reducing production costs and improving production efficiency. The manufacture of lithium-ion batteries requires electrolytic copper foil with a longer number of meters. Extending the number of meters of electrolytic copper foil can better meet these application requirements, improve product quality and performance, and help enhance the competitiveness and market share of electrolytic copper foil companies.

[0018] The translation mechanism 5 includes a guide groove 52 and a transmission seat 54. The guide groove 52 is opened on the front side of the frame 1. The transmission seat 54 is slidably connected to the guide groove 52. The mounting frame 8 is fixed to the side of the transmission seat 54. The translation mechanism 5 also includes a servo motor 51 and a screw rod 53. The servo motor 51 is installed on the side of the frame 1. The screw rod 53 is rotatably installed on the inner side of the guide groove 52. The screw rod 53 is threadedly connected to the transmission seat 54. The output shaft of the servo motor 51 is fixedly connected to the end of the screw rod 53. The servo motor 51 is electrically connected to the power switch group 2. The output shaft of the servo motor 51 drives the screw rod 53 to rotate. The screw rod 53 and the transmission seat 54 are threadedly transmitted. The transmission seat 54 drives the installation frame 8 to rotate. The mounting frame 8 moves along the guide groove 52, thereby translating the polishing roller 11. Usually, the edge of the polishing roller 11 has a finer particle size and a lower surface roughness, and the copper coating is easy to be completely peeled off from the titanium substrate. After a certain period of immersion plating of the titanium edge that is easy to tear, the low roughness area of ​​the surface is lost due to pickling oxidation and the like, so that the high roughness area of ​​the sub-surface layer in some areas is exposed, thereby increasing the bonding force between the copper coating and the titanium substrate, resulting in abnormal edge sticking, which in severe cases leads to the number of meters not meeting the standard. Therefore, the edge of the polishing roller 11 is translated to the titanium edge through the translation mechanism 5 to avoid polishing the edge with a coarse-grained polishing brush, thereby avoiding the edge sticking and tearing caused by the increased surface roughness.

[0019] The height adjustment mechanism 4 includes a guide rod 43 and a mounting seat 42, the end of the guide rod 43 is fixedly connected to the frame 1, the mounting seat 42 is slidably connected to the guide rod 43 up and down, and the guide roller 9 is rotatably mounted on the side of the mounting seat 42. The height adjustment mechanism 4 also includes a scale 41, which is arranged on the surface of the guide rod 43 and distributed along the axial direction of the guide rod 43. The height adjustment mechanism 4 also includes an electric push rod 44, which is mounted on the top of the frame 1, and the telescopic end of the electric push rod 44 is fixedly connected to the top of the mounting seat 42, and the electric push rod 44 is electrically connected to the electric push rod 44. Source switch group 2, the telescopic end of the electric push rod 44 drives the mounting seat 42 to move up and down, the mounting seat 42 and the guide roller 9 slide up and down, the mounting seat 42 points to the scale 41 on the guide roller 9, and the adjustment height is determined by the reading on the scale 41. The mounting seat 42 drives the guide roller 9 to move up and down, thereby adjusting the working height of the guide roller 9. By re-adjusting the height of the guide roller 9, the filling state of the O-ring 6 in the O-groove is adjusted to ensure that the O-ring 6 and the end face of the cathode roller 7 are closely fitted to avoid excessive tank liquid entering the gap between the two and inducing copper plating and sticking on the edge.

[0020] The working principle of the anti-tearing edge device for the production of ultra-thin lithium battery copper foil provided by the utility model is as follows: the output shaft of the stepper motor 10 drives the polishing roller 11 to rotate, so that the polishing roller 11 performs a polishing operation, and the physical properties of the copper foil are regulated by controlling the ratio of the brightener to the single unit of the control system, and the control ratio is about 1:2. Usually, the edge of the polishing roller 11 has a finer particle size and a lower surface roughness, and the copper plating layer is easy to be completely peeled off from the titanium substrate. When the titanium edge on the side that is easy to tear is immersed in plating for a certain period of time, the low roughness area of ​​the surface layer is lost due to acid washing oxidation, etc., so that part of the The sub-surface high roughness area is exposed in different regions, thereby increasing the bonding force between the copper coating layer and the titanium substrate, resulting in abnormal edge sticking, which in severe cases leads to failure to meet the standard. Therefore, the edge of the polishing roller 11 is translated to the titanium edge by the translation mechanism 5 to avoid polishing the edge with a coarse-grained polishing brush, and to avoid edge sticking and tearing caused by increased surface roughness. The output shaft of the servo motor 51 drives the screw 53 to rotate, and the screw 53 and the transmission seat 54 are threadedly transmitted. The transmission seat 54 drives the mounting frame 8 to move along the guide groove 52, thereby translating the polishing roller 11;

[0021] The telescopic end of the electric push rod 44 drives the mounting seat 42 to move up and down, and the mounting seat 42 and the guide roller 9 slide up and down. The mounting seat 42 points to the scale 41 on the guide roller 9, and the adjustment height is determined by the reading on the scale 41. The mounting seat 42 drives the guide roller 9 to move up and down, thereby adjusting the working height of the guide roller 9. By re-adjusting the height of the guide roller 9, the filling state of the O-ring 6 in the O-groove is adjusted to ensure that the O-ring 6 and the end surface of the cathode roller 7 are closely attached to each other, and avoid excessive tank liquid entering the gap between the two to induce copper plating sticking at the edge;

[0022] An O-ring 6 is pasted and filled in the O-groove. When the cathode roller 7 is in operation, the two O-rings 6 come into contact with each other and fill the O-groove together, thereby enhancing the sealing effect of the O-ring and preventing the tank liquid from entering the tank and causing the edge sticking.

[0023] It is worth noting that the components disclosed in the above embodiments are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances, for example, the rotational connection can be a rotational connection through a bearing.

[0025] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. An anti-tearing edge device for producing ultra-thin lithium battery copper foil, comprising a frame (1) and a mounting frame (8), wherein the inner side of the frame (1) is rotatably connected to a cathode roller (7) via a rotating shaft (3), and the inner side of the mounting frame (8) is rotatably mounted with a polishing roller (11), and a stepping motor (10) is mounted at the end of the mounting frame (8), and the output shaft of the stepping motor (10) is fixedly connected to the roller shaft end of the polishing roller (11), characterized in that: The O-shaped groove at the end of the cathode roller (7) is filled with an O-ring (6), and there are two O-rings (6) in the same O-shaped groove, and the two O-rings (6) are connected to each other. The left and right sides of the frame (1) are symmetrically installed with a height adjustment mechanism (4), and a guide roller (9) is rotatably installed on the adjustment part of the height adjustment mechanism (4), and the guide roller (9) is pressed on the O-ring (6). The front side of the frame (1) is installed with a translation mechanism (5), and the mounting frame (8) is fixed to the side of the moving part of the translation mechanism (5). The side of the frame (1) is installed with a power switch group (2), and the power switch group (2) is electrically connected to an external power supply.

2. The anti-tearing edge device for producing ultra-thin lithium battery copper foil according to claim 1, characterized in that: The translation mechanism (5) comprises a guide groove (52) and a transmission seat (54), the guide groove (52) being arranged on the front side of the frame (1), the transmission seat (54) being slidably connected to the guide groove (52), and the mounting frame (8) being fixed on the side of the transmission seat (54).

3. The anti-tearing edge device for producing ultra-thin lithium battery copper foil according to claim 2, characterized in that: The translation mechanism (5) further comprises a servo motor (51) and a screw rod (53), wherein the servo motor (51) is mounted on a side of the frame (1), the screw rod (53) is rotatably mounted on the inner side of the guide groove (52), the screw rod (53) is threadedly connected to the transmission seat (54), the output shaft of the servo motor (51) is fixedly connected to the end of the screw rod (53), and the servo motor (51) is electrically connected to the power switch group (2).

4. The anti-tearing edge device for producing ultra-thin lithium battery copper foil according to claim 1, characterized in that: The height adjustment mechanism (4) comprises a guide rod (43) and a mounting seat (42), the end of the guide rod (43) is fixedly connected to the frame (1), the mounting seat (42) is slidably connected to the guide rod (43) up and down, and the guide roller (9) is rotatably mounted on the side of the mounting seat (42).

5. The anti-tearing edge device for producing ultra-thin lithium battery copper foil according to claim 4, characterized in that: The height adjustment mechanism (4) further comprises a scale (41), wherein the scale (41) is arranged on the surface of the guide rod (43) and is distributed along the axial direction of the guide rod (43).

6. The anti-tearing edge device for producing ultra-thin lithium battery copper foil according to claim 4, characterized in that: The height adjustment mechanism (4) further comprises an electric push rod (44), wherein the electric push rod (44) is mounted on the top of the frame (1), the telescopic end of the electric push rod (44) is fixedly connected to the top of the mounting seat (42), and the electric push rod (44) is electrically connected to the power switch group (2).

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