A multifunctional slitting device for aluminum foil

Abstract

The present invention relates to a multifunctional slitting device for aluminum foil in the field of aluminum foil production technology, comprising a frame, wherein the frame is provided with an unwinding roller capable of unwinding a mother aluminum foil roll, a slitting mechanism capable of slitting the unwound aluminum foil, a guiding mechanism capable of guiding the slit aluminum foil, and a reeling mechanism capable of reeling the slit aluminum foil. In the present invention, since a disc cutter contacts the aluminum foil to be slit before the slitting roller, the linear speed of the outer edge of the disc cutter is greater than the aluminum foil transmission speed, the blade surface of the disc cutter contacts the corresponding cutting groove wall with a force of 25-45N, and the blade surface of the disc cutter corresponding to the cutting groove wall is a planar structure and is in contact with the cutting groove wall, the disc cutter slits the aluminum foil in a shearing manner, and the slit aluminum foil immediately adheres to the roller body of the slitting roller, effectively preventing the edge of the aluminum foil from warping after slitting.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum foil production, in particular to a multifunctional slitting device for aluminum foil. Background Art

[0002] Battery aluminum foil is used as a current collector for lithium-ion batteries. Typically, the lithium-ion battery industry uses rolled aluminum foil as the positive electrode current collector. During the production of aluminum foil, the entire roll of aluminum foil needs to be cut into smaller widths for subsequent processing. A cutting device for lithium battery aluminum foil processing is usually used during the cutting process.

[0003] The existing Chinese patent with publication number CN113414811B discloses an anti-flagging slitting process and cutter suitable for high-quality battery aluminum foil. The device requires the aluminum foil to first contact the aluminum foil transmission wheel, and then the ceramic cutting knife cooperates with the cutting groove in the aluminum foil transmission wheel to achieve the slitting of the aluminum foil. However, the slitting work is actually completed by tearing, resulting in burrs and flanging on the edges of the slit aluminum foil. The flattening turntable in the device is required to perform flattening treatment to eliminate the flanging, but the flattening turntable cannot eliminate the burrs.

[0004] The existing Chinese patent with publication number CN113263531A discloses a device for slitting aluminum foil for high-quality batteries, which specifically discloses a base, a material dividing ring is installed at one end of the top of the base, and the outer wall of the material dividing ring is rolled with aluminum foil, a first material guide ring is installed on the top of the base, and a slitting mechanism is installed at the other end of the top of the base; the device cuts the aluminum foil by the edge of the circular slitting knife and the edge of the circular slitting baffle. Although it can ensure that the aluminum foil does not have flanging and burrs during slitting, it is easy to cause damage to the edge of the circular slitting knife and the edge of the circular slitting baffle, which increases the frequency of maintenance, and requires the slitting mechanism in the device to have high assembly accuracy, which makes maintenance difficult, and it is easy for the circular slitting knife and the circular slitting baffle to be not in the same plane, resulting in the slitting work being completed in the form of tearing, resulting in flanging and burrs in the aluminum foil slitting. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional slitting device for aluminum foil in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A multifunctional slitting device for aluminum foil comprises a frame, the frame being provided with an unwinding roller capable of unwinding a mother aluminum foil roll, a slitting mechanism capable of slitting the unwound aluminum foil, a guiding mechanism capable of guiding the slit aluminum foil, and a rewinding mechanism capable of rewinding the slit aluminum foil. The slitting mechanism comprises a slitting roller rotatably connected to the frame, and a cutting roller rotatably connected to the frame. The slitting roller is provided with a plurality of cutting grooves spaced apart along its axial direction. The cutting roller body is provided with two disc cutters for slitting the aluminum foil at positions corresponding to each cutting groove. The opposing blade surfaces of the two disc cutters are both planar structures and are respectively in contact with the two groove walls of the corresponding cutting groove. The cutting roller is further provided with a force applying member capable of causing the blade surfaces of the disc cutters to contact the corresponding groove walls with a force of 25-45N.

[0008] The slitting mechanism also includes a driving device capable of driving the cutter roller to rotate so that the linear speed of the outer edge of the disc cutter on the cutter roller is greater than the transmission speed of the aluminum foil;

[0009] It also includes a guide roller that can guide the unwound aluminum foil so that the aluminum foil first contacts the disc cutter and then contacts the slitting roller.

[0010] Preferably, the slitting roller includes a slitting roller body rotatably connected to the frame, and the slitting roller body is provided with a plurality of detachable roller sleeves at intervals along its axial direction, and the two end surfaces of the roller sleeve are detachably connected with matching baffles, wherein the wear resistance of the baffles is less than the wear resistance of the disc cutter.

[0011] Preferably, the slitting roller body is provided with a splitting ring corresponding to the roller body located between adjacent roller sleeves, and the splitting ring does not contact the corresponding disc cutter.

[0012] Preferably, the cutting roller is located below the slitting roller, and a lubrication mechanism capable of lubricating the disc cutter is provided below the cutting roller.

[0013] Preferably, the lubrication mechanism includes an oil storage tank installed on the frame and used to store lubricating oil / grease. The oil storage tank is provided with an opening mask for the bottom of the disc cutter to enter at the position corresponding to the disc cutter, and the inner cavity of the opening mask is provided with oil supply parts that enable the lubricating oil / grease to adhere to the disc cutter at positions corresponding to both sides of the bottom of the disc cutter.

[0014] Preferably, the force applying member is a compression spring or two annular magnets that repel each other, and the force applying member is matched and sleeved on the cutting roller body at a position between two disc cutters corresponding to the same cutting groove.

[0015] Preferably, the cutter roller body is fixed with a detachable cutter stopper at a position on both sides of the two disc cutters corresponding to the same cutting groove.

[0016] Preferably, the winding mechanism comprises a winding roller rotatably connected to the frame, the winding roller body is provided with a detachable winding sleeve coaxially with the roller sleeve at a position corresponding to the roller sleeve, and the length of the winding sleeve is greater than the width of the corresponding aluminum foil after slitting;

[0017] The winding mechanism also includes a driving device that can drive the winding roller to rotate to achieve winding of the aluminum foil.

[0018] Preferably, the winding mechanism further comprises a pressing structure for squeezing the aluminum foil roll of the winding sleeve;

[0019] The clamping structure includes a mounting shaft, both shaft heads of the mounting shaft are provided with sliders, and the sliders are connected to the position of the frame above the winding roller for sliding up and down. The mounting shaft body is rotatably connected to the position of the winding sleeve and is coaxial with the rubber wheel for squeezing the aluminum foil roll of the winding sleeve.

[0020] Preferably, it also includes a collection structure for collecting waste generated when the aluminum foil is slitting; the collection structure includes a waste tape winding roller capable of winding up the waste tape between two adjacent slitting aluminum foils and a dust suction structure for collecting dust.

[0021] The beneficial effects are:

[0022] 1. Since the disc cutter contacts the aluminum foil to be cut before the slitting roller, the linear speed of the outer edge of the disc cutter is greater than the transmission speed of the aluminum foil, the disc cutter blade contacts the corresponding cutting groove wall with a force of 25-45N, and the blade surface of the disc cutter corresponding to the cutting groove wall is a flat structure and fits the cutting groove wall, the disc cutter cuts the aluminum foil in the form of shearing, and the cut aluminum foil is immediately attached to the slitting roller body, effectively preventing the edge of the aluminum foil from warping after slitting, solving the technical problem of warping and burrs on the edge of the aluminum foil after slitting in the prior art. In addition, since the disc cutter blade contacts the corresponding cutting groove wall with a force of 25-45N, and the blade surface of the disc cutter corresponding to the cutting groove wall is a flat structure and fits the cutting groove wall, the stability of the cooperation between the disc cutter and the cutting groove can be guaranteed, solving the problem that high assembly precision is required in the prior art to ensure that the edge of the aluminum foil after slitting does not warp.

[0023] 2. Overall, it realizes multiple functions such as slitting of aluminum foil, cleaning of aluminum foil after slitting, and waste collection.

[0024] Additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the slitting roller in the present invention;

[0028] Figure 3 It is a schematic structural diagram of the cutting roller in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the winding mechanism in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the lubrication mechanism in the present invention.

[0031] The following are the descriptions of the reference numerals:

[0032] 1. Frame; 2. Unwinding roller; 3. Slitting mechanism; 31. Slitting roller; 311. Slitting roller body; 312. Roller sleeve; 313. Blocking piece; 314. Splitting ring; 32. Cutter roller; 33. Disc cutter; 34. Force-applying member; 35. Cutter block; 4. Guide mechanism; 5. Rewinding mechanism; 51. Rewinding roller; 52. Rewinding sleeve; 53. Pressing structure; 531. Mounting shaft; 532. Sliding block; 533. Rubber wheel; 6. Guide roller; 7. Lubricating mechanism; 71. Oil storage tank; 72. Opening cover; 73. Oil supply member; 8. Collection structure; 81. Waste tape rewinding roller; 82. Dust collection structure. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] Example 1, as Figure 1-5As shown, a multifunctional slitting device for aluminum foil includes a frame 1, the frame 1 is provided with an unwinding roller 2 capable of unwinding a mother aluminum foil roll, a slitting mechanism 3 capable of slitting the unwound aluminum foil, a guiding mechanism 4 capable of guiding the slit aluminum foil, and a rewinding mechanism 5 capable of rewinding the slit aluminum foil, the slitting mechanism 3 includes a slitting roller 31 rotatably connected to the frame 1, and a cutting roller 32 rotatably connected to the frame 1, the slitting roller 31 is provided with a plurality of cutting grooves at intervals along its axial direction, specifically, the cutting groove is an annular structure arranged along the circumference of the roller body of the slitting roller 31; the position of the roller body of the cutting roller 32 corresponding to each cutting groove is sleeved Two disc cutters 33 are provided for cutting aluminum foil, and the opposing blade surfaces of the two disc cutters 33 are both planar structures and are respectively in contact with the two groove walls of the corresponding cutting groove. The cutting roller 32 is also provided with a force applying member 34 that can make the blade surface of the disc cutter 33 and the corresponding cutting groove wall contact with a force of 25-45N. Preferably, when the thickness of the aluminum foil is 0.02-0.05mm, the contact force is 25-30N; preferably, when the thickness of the aluminum foil is 0.05-0.08mm, the contact force is 30-40N; preferably, when the thickness of the aluminum foil is 0.08-0.1, the contact force is 40-45N.

[0036] The slitting mechanism 3 further includes a driving device capable of driving a cutter roller 32 to rotate so that the linear speed of the outer edge of the disc cutter 33 on the cutter roller 32 is greater than the transmission speed of the aluminum foil. As needed, the cutter roller 32 rotates in the opposite direction to the slitting roller 31. As needed, the linear speed of the outer edge of the disc cutter 33 is 1.03-1.1 times the transmission speed of the aluminum foil.

[0037] The invention also includes a guide roller 6 capable of guiding the unwound aluminum foil so that the aluminum foil first contacts the disc cutter 33 and then contacts the slitting roller 31. As required, the angle between the straight line formed by the two corresponding intersection points of the outer edge of the disc cutter 33 and the outer edge of the cutting groove and the incoming aluminum foil surface is 2-5 degrees, and the incoming aluminum foil is biased towards the central axial direction of the disc cutter 33;

[0038] In this arrangement, the disc cutter 33 contacts the aluminum foil to be cut before the slitting roller 31, the outer edge linear speed of the disc cutter 33 is greater than the transmission speed of the aluminum foil, the blade surface of the disc cutter 33 and the corresponding cutting groove wall are in conflict with each other with a force of 25-45N, and the blade surface of the disc cutter 33 corresponding to the cutting groove wall is a flat structure and fits the cutting groove wall. Therefore, the disc cutter 33 cuts the aluminum foil in the form of shearing, and the aluminum foil after cutting is immediately attached to the roller body of the slitting roller 31, effectively preventing the aluminum foil after cutting from being cut. The edge warping occurs, which solves the technical problem of warping and burrs on the edge of the aluminum foil after slitting in the prior art. In addition, since the blade surface of the disc cutter 33 and the corresponding cutting groove wall are in conflict with each other with a force of 25-45N and the blade surface of the disc cutter 33 corresponding to the cutting groove wall is a planar structure and fits with the cutting groove wall, the stability of the disc cutter 33 and the cutting groove can be guaranteed, which solves the problem in the prior art that higher assembly precision is required to ensure that the edge of the aluminum foil after slitting does not warp.

[0039] Example 2, based on Example 1, Figure 2 As shown, the slitting roller 31 includes a slitting roller body 311 rotatably connected to the frame 1. The slitting roller body 311 is provided with a plurality of detachable roller sleeves 312 at intervals along its axial direction. The roller sleeves 312 are detachably connected to the two end surfaces thereof with matching baffles 313. The wear resistance of the baffles 313 is lower than that of the disc cutter 33.

[0040] This arrangement allows the baffle 313 to wear out before the disc cutter 33, so only the baffle 313, which is relatively inexpensive, needs to be replaced, effectively reducing production costs.

[0041] The slitting roller body 311 is located between adjacent roller sleeves 312 and is matched with a split ring 314, and the split ring 314 does not contact the corresponding disc cutter 33;

[0042] This arrangement can ensure the width of the cutting groove through the split ring 314 , and can also achieve the purpose of only locking the roller sleeves 312 at both ends, thereby reducing the difficulty of replacing the blocking piece 313 .

[0043] Example 3, based on Example 1, Figure 1 and Figure 5 As shown, the cutter roller 32 is located below the slitting roller 31. A lubrication mechanism 7 is provided below the cutter roller 32 to lubricate the disc cutter 33.

[0044] The lubrication mechanism 7 includes an oil storage tank 71 mounted on the frame 1 and used to store lubricating oil / grease. The oil storage tank 71 is provided with an opening 72 for the bottom of the disc cutter 33 to enter at a position corresponding to the disc cutter 33. The inner cavity of the opening 72 is provided with oil supply parts 73 at positions corresponding to both sides of the bottom of the disc cutter 33 to allow the lubricating oil / grease to adhere to the disc cutter 33.

[0045] As needed, the oil supply member 73 is a sponge capable of absorbing the lubricating oil / grease in the inner cavity of the oil storage tank 71, or a combination of an oil pump and an oil spray nozzle capable of absorbing the lubricating oil / grease in the inner cavity of the oil storage tank 71 and spraying the lubricating oil / grease to both sides of the bottom of the disc cutter 33. When the oil supply member 73 is a sponge, the sponge contacts the cutting surface of the disc cutter 33.

[0046] In this way, not only the disc cutter 33 can be lubricated, but also the disc cutter 33 can be lowered to ensure the sharpness of the disc cutter 33.

[0047] Example 4, based on Example 1, Figure 3 As shown, the force member 34 is a compression spring or two annular magnets that repel each other. The force member 34 is matched and sleeved on the cutter roller 32 and is located between the two disc cutters 33 corresponding to the same cutter groove. If needed, the force member 34 can also be a micro servo telescopic cylinder.

[0048] The cutter roller 32 is located on both sides of the two disc cutters 33 corresponding to the same cutter groove and is fixed with a detachable cutter stop 35;

[0049] As needed, the blade stopper 35 fits the blade surface of the disc cutter 33;

[0050] As required, the disc cutter 33 is installed through the cutter holder, and as required, the cutter block 35 is in contact with the cutter holder;

[0051] In this way, when the disc cutter 33 is subjected to excessive force due to a fault, the disc cutter 33 and the cutting groove wall can be prevented from being subjected to a large force at the cutting portion, which may cause the disc cutter 33 to break, thereby improving the safety factor.

[0052] Example 5, based on Example 1, Figure 1 and Figure 4 As shown, the winding mechanism 5 includes a winding roller 51 rotatably connected to the frame 1. The position of the winding roller 51 corresponding to the roller cover 312 is coaxially provided with a detachable winding cover 52, and the length of the winding cover 52 is greater than the width of the corresponding aluminum foil after slitting. Specifically, after the winding cover 52 rolls up the aluminum foil, both ends of the winding cover 52 are located outside the aluminum foil roll; this facilitates the disassembly of the aluminum foil roll after slitting.

[0053] The winding mechanism 5 also includes a driving device capable of driving the winding roller 51 to rotate to achieve winding of the aluminum foil;

[0054] Example 6, based on Example 5, Figure 1 and Figure 4 As shown, the winding mechanism 5 further includes a pressing structure 53 for squeezing the winding sleeve 52 to cover the aluminum foil roll;

[0055] The pressing structure 53 includes a mounting shaft 531, and both ends of the mounting shaft 531 are provided with sliders 532. The sliders 532 are connected to the frame 1 above the winding roller 51 for sliding movement up and down. The mounting shaft 531 is rotatably connected to the position of the winding sleeve 52 and is coaxially connected thereto. The rubber wheel 533 is used to squeeze the aluminum foil roll on the winding sleeve 52. As needed, the rubber wheel 533 is the same length as the winding sleeve 52. As needed, the rubber wheel 533 has a rubber layer only on its circumferential surface.

[0056] This arrangement allows the rubber wheel 533 to squeeze the slit aluminum foil roll, thereby ensuring the tightness of the aluminum foil roll.

[0057] Example 7, based on Example 1, Figure 1 As shown, it also includes a collection structure 8 for collecting waste generated when the aluminum foil is slitting; the collection structure 8 includes a waste tape reel 81 that can reel in the waste tape between two adjacent slitting aluminum foils and a dust suction structure 82 for collecting dust;

[0058] As needed, the dust suction structure 82 includes a filter box capable of filtering dust. The air inlet of the filter box is connected to a dust suction head through an air pipe, and the outlet of the filter box is connected to a negative pressure pump. As needed, the dust suction head is a rectangular structure, and the air inlet is a flat structure.

[0059] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional slitting device for aluminum foil, comprising a frame (1), wherein the frame (1) is provided with an unwinding roller (2) capable of unwinding a mother aluminum foil roll, a slitting mechanism (3) capable of slitting the unwound aluminum foil, a guiding mechanism (4) capable of guiding the slit aluminum foil, and a rewinding mechanism (5) capable of rewinding the slit aluminum foil, characterized in that: The slitting mechanism (3) comprises a slitting roller (31) rotatably connected to the frame (1) and a cutting roller (32) rotatably connected to the frame (1), wherein the slitting roller (31) is provided with a plurality of cutting grooves spaced along its axial direction, and the roller body of the cutting roller (32) is provided with two disc cutters (33) for slitting aluminum foil at positions corresponding to each cutting groove, and the opposing blade surfaces of the two disc cutters (33) are both planar structures and respectively fit with two groove walls of the corresponding cutting groove, and the cutting roller (32) is further provided with a force applying member (34) capable of causing the blade surface of the disc cutter (33) to contact the groove wall of the corresponding cutting groove with a force of 25-45N; The force applying member (34) is a compression spring or two annular magnets that repel each other, and the force applying member (34) is matched and sleeved on the roller body of the cutting roller (32) and is located between two disc cutters (33) corresponding to the same cutting groove; The slitting mechanism (3) further comprises a driving device capable of driving the cutter roller (32) to rotate so that the linear speed of the outer edge of the disc cutter (33) is 1.03-1.1 times the transmission speed of the aluminum foil; It also includes a guide roller (6) capable of guiding the unwound aluminum foil so that the aluminum foil first contacts the disc cutter (33) and then contacts the slitting roller (31); and the intersection angle between the straight line formed by the two corresponding intersection points of the outer edge of the disc cutter (33) and the outer edge of the cutter groove and the incoming aluminum foil surface is 2-5 degrees, and the incoming aluminum foil is biased towards the central axial direction of the disc cutter 33; The slitting roller (31) comprises a slitting roller body (311) rotatably connected to the frame (1), the slitting roller body (311) is provided with a plurality of detachable roller sleeves (312) at intervals along its axial direction, and both end surfaces of the roller sleeve (312) are detachably connected to matching baffles (313), wherein the wear resistance of the baffles (313) is less than that of the disc cutter (33); The roller bodies of the slitting roller bodies (311) are correspondingly located between adjacent roller sleeves (312) and are matched with split rings (314), and the split rings (314) are not in contact with the corresponding disc cutters (33).

2. The multifunctional aluminum foil slitting device according to claim 1, characterized in that: The cutting roller (32) is correspondingly located below the slitting roller (31), and a lubrication mechanism (7) capable of lubricating the disc cutter (33) is also provided below the cutting roller (32).

3. The multifunctional aluminum foil slitting device according to claim 2, characterized in that: The lubricating mechanism (7) comprises an oil storage tank (71) mounted on the frame (1) and used for storing lubricating oil / grease. The oil storage tank (71) is provided with an opening housing (72) for the bottom of the disc cutter (33) to enter at a position corresponding to the disc cutter (33). The inner cavity of the opening housing (72) is provided with oil supply parts (73) at positions corresponding to both sides of the bottom of the disc cutter (33) to enable the lubricating oil / grease to adhere to the disc cutter (33).

4. The multifunctional aluminum foil slitting device according to claim 1, characterized in that: The cutting roller (32) is located at the two sides of the two disc cutters (33) corresponding to the same cutting groove, and is fixed with a detachable cutting block (35).

5. The multifunctional aluminum foil slitting device according to claim 1, characterized in that: The winding mechanism (5) comprises a winding roller (51) rotatably connected to the frame (1), wherein the winding roller (51) is provided with a detachable winding sleeve (52) coaxially with the roller sleeve (312) at a position corresponding to the roller sleeve (312), and the length of the winding sleeve (52) is greater than the width of the corresponding aluminum foil after slitting; The winding mechanism (5) further comprises a driving member capable of driving the winding roller (51) to rotate to achieve winding of the aluminum foil.

6. The multifunctional aluminum foil slitting device according to claim 5, characterized in that: The reeling mechanism (5) further comprises a pressing structure (53) for squeezing the reeling sleeve (52) to enclose the aluminum foil roll; The pressing structure (53) includes a mounting shaft (531), both shaft ends of the mounting shaft (531) are provided with sliders (532), and the sliders (532) are connected to the frame (1) at a position above the winding roller (51) in an upward and downward sliding manner, and the mounting shaft (531) is rotatably connected to a rubber wheel (533) coaxial with the winding sleeve (52) and used to squeeze the aluminum foil roll on the winding sleeve (52).

7. The multifunctional aluminum foil slitting device according to claim 1, characterized in that: It also includes a collection structure (8) for collecting waste generated when the aluminum foil is slitting; the collection structure (8) includes a waste tape reeling roller (81) capable of reeling in waste tape between two adjacent slitting aluminum foils and a dust suction structure (82) for collecting dust.

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