Composite current collector cutter structure and cutting equipment

Abstract

The utility model discloses a composite current collector cutter structure and cutting equipment, and the composite current collector cutter structure comprises a cutter body which is cylindrical; the cutter groove is formed in the cutter roller; along the cutting direction perpendicular to the cutter body, the section of the cutter groove is a rectangle with an opening in the upper end, a trapezoid with an opening in the upper end or a major arc with an opening in the upper end; and the circumferential surface of the cutter body is matched with the edge at the opening of the cutter groove so as to cut the composite current collector. According to the cutter structure of the composite current collector, the composite current collector is cut through the shearing force generated when the circumferential face of the cutter body and the opening edges of the cutter grooves are extruded, the problems that the edge of the composite current collector is curled and the edge of the composite current collector is uneven after the composite current collector is cut are effectively solved, the structure is simple, and the cutting effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite current collector cutting technical field, especially in kind of composite current collector cutting tool structure and cutting equipment. BACKGROUND

[0002] Composite current collector is the composite foil formed by depositing metal copper or metal aluminum on the upper and lower surfaces of the base film through plating process, with PET, PP or PI as the intermediate layer base film.

[0003] Prior art such as application number CN 202322971977.5, invention name: a thin film cutting tool and conductive metal film production device, which discloses: a thin film cutting tool, including upper cutting tool body, knife disc and locking cover, the outermost edge of the upper cutting tool body is provided with a cutting edge, the upper cutting tool body is provided with a transition surface adjacent to the cutting edge; the center of the upper cutting tool body is provided with a mounting hole, the knife disc is provided with a locking column, the locking column passes through the mounting hole, the locking cover is threadedly connected with the locking column, and the upper cutting tool body is fixed on the knife disc.

[0004] The deficiencies of the foregoing prior art structure are: first, the cutting tool is thin, and the cutting edge and the transition surface have an inclined angle, when cutting the composite current collector, the composite current collector will contact the cutting edge and the transition surface, resulting in curling of the edge of the cut composite current collector; second, the foregoing cutting tool mainly relies on the cutting edge to cut after being attached to the composite current collector, no matter how the two are attached, the pressure of the cutting edge on the composite current collector is not enough, resulting in defects such as jagged edge and lotus leaf edge on the cutting edge; at the same time, the cutting tool is too tightly attached and is prone to breakage, which poses a safety hazard.

[0005] Therefore, the prior art needs to be improved and improved. UTILITY MODEL CONTENT

[0006] In view of the deficiencies of the foregoing prior art, the purpose of the utility model is to provide a composite current collector cutting tool structure and cutting equipment, aiming at solving the problem of poor cutting effect of the existing cutting tool structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A composite current collector cutter structure, comprising: a cutter body in the shape of a cylinder; a cutter groove provided on a cutter roller; the cross section of the cutter groove along the cutting direction perpendicular to the cutter body is an open-ended rectangle, an open-ended trapezoid or an open-ended arc of a circle; the circumferential surface of the cutter body cooperates with the edge of the opening of the cutter groove to cut the composite current collector.

[0009] The opening width of the cutter groove is 2mm-600mm.

[0010] A composite current collector cutting device, comprising: an unwinding device for releasing the composite current collector to be cut, a winding device for winding the cut composite current collector, and the above-mentioned cutter structure, a cutter roller is provided on the composite current collector conveying path between the unwinding device and the winding device, at least one cutter groove is provided in the form of a circular ring on the circumferential surface of the cutter roller, and the opposite side of the cutter roller is provided with the cutter body corresponding to the number of cutter grooves.

[0011] A plurality of flattening rollers are provided on the composite current collector conveying path between the unwinding device and the cutter structure.

[0012] The flattening rollers are provided with stripe marks.

[0013] At least one static electricity elimination device is provided on the composite current collector conveying path between the unwinding device and the cutter structure.

[0014] A tension roller and a compression roller are provided on the composite current collector conveying path between the cutter structure and the winding device.

[0015] When the cutter body is pressed against the edge of the opening of the cutter groove, the difference between the distance between the two pressing points of the cutter body in the radial cross section and the width of the cutter groove is less than the thickness of the composite current collector.

[0016] When the cutter body is pressed against the edge of the opening of the cutter groove, the difference between the distance between the two pressing points of the cutter body in the radial cross section and the width of the cutter groove is 500nm-2000nm.

[0017] A metal layer with a Mohs hardness of 5.5 or more is provided on the cutter body and the cutter roller.

[0018] Compared with the prior art, the utility model provides a kind of composite current collector cutter structure and cutting equipment, wherein, composite current collector cutter structure, including: cutter body, the cutter body is cylinder;Knife groove, the knife groove is set on cutter roll;Along the cutting direction perpendicular to the cutter body, the section of the knife groove is upper end open rectangle, upper end open trapezoidal or upper end open superior arc;The circumferential surface of the cutter body is matched with the edge of the opening of the knife groove to cut composite current collector.The composite current collector cutter structure in application, utilize the shearing force generated when the circumferential surface of cutter body and the opening edge of knife groove extrude to cut composite current collector, effectively avoid the problem that edge curling and edge uneven after cutting composite current collector, structure is simple, and cutting effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic view of the composite current collector cutter structure of the first embodiment provided by the utility model.

[0020] Figure 2 It is the structure schematic view of the composite current collector cutter structure of the second embodiment provided by the utility model.

[0021] Figure 3 It is the structure schematic view of the composite current collector cutter structure of the third embodiment provided by the utility model.

[0022] Figure 4 It is the structure schematic view of the composite current collector cutting equipment provided by the utility model.

[0023] REFERENCE NUMERALS

[0024] Cutter body 1, knife groove 21, unwinding device 3, winding device 4, cutter roll 51, flattening roller 52, static electricity elimination device 53, tension roller 54, press roller 55. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and effect of the utility model more clear and definite, the utility model is further explained in detail below with reference to the drawings and examples.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] It should be noted that when a component is referred to as "mounted on", "fixed on" or "disposed on" another component, it can be directly on another component or there can be a middle component at the same time.When a component is referred to as "connected to" another component, it can be directly connected to another component or there can be a middle component at the same time.

[0027] It also needs to be explained that the left, right, up, down and other directions in the embodiments of the utility model are only relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0028] The composite current collector is a composite foil formed by depositing copper or aluminum on both sides of a base film of PET, PP or PI as an intermediate layer base film through plating and other processes.

[0029] Prior art such as application number CN 202322971977.5, invention name: an upper film cutter and conductive metal film production device, discloses: an upper film cutter, comprising an upper cutter main body, a cutter disc and a locking cover, the outermost edge of the upper cutter main body is provided with a cutting edge, and the upper cutter main body is provided with a transition surface adjacent to the cutting edge; the center of the upper cutter main body is provided with a mounting hole, the cutter disc is provided with a locking column, the locking column passes through the mounting hole, the locking cover is threadedly connected with the locking column, and the upper cutter main body is fixed on the cutter disc.

[0030] The disadvantages of the foregoing prior art structure are: first, the cutter is thin, and the cutting edge and the transition surface have an inclined angle, when cutting the composite current collector, the composite current collector will contact the cutting edge and the transition surface, causing the edge of the cut composite current collector to curl; second, the foregoing cutter mainly relies on the cutting edge to cut after being attached to the composite current collector, no matter how attached, the pressure of the cutting edge on the composite current collector is not enough, causing the cutting edge to have defects such as jagged edges and lotus leaf edges; at the same time, the cutter is too tightly attached and is prone to breakage, which poses a safety hazard.

[0031] To solve at least one problem in the prior art, the utility model provides a composite current collector cutter structure, please refer to Figures 1-3, including: cutter body 1, the cutter body 1 is cylindrical;Knife groove 21, the knife groove 21 is provided on the cutter roller 51;The cross section of the knife groove 21 along the cutting direction perpendicular to the cutter body 1 is an upper-end-opened rectangle, an upper-end-opened trapezoid or an upper-end-opened arc;The circumferential surface of the cutter body 1 cooperates with the edge of the opening of the knife groove 21 to cut the composite current collector.The composite current collector cutting cutter structure in the application uses the shear force generated when the circumferential surface of the cutter body 1 and the opening edge of the knife groove 21 are extruded to cut the composite current collector, effectively avoiding the problems of edge curling and uneven edge after cutting the composite current collector, and the structure is simple and the cutting effect is good.The cross section of the knife groove 21 along the direction perpendicular to the cutting direction of the composite current collector is an upper-end-opened rectangle, an upper-end-opened trapezoid or an upper-end-opened arc, and the circumferential surface of the cutter body 1 will be extruded with the edge of the opening of the knife groove 21 when cutting the composite current collector, and the shear force generated by the extrusion will cut off the composite current collector between the circumferential surface and the edge.The diameter of the radial cross section of the cutter body 1 is greater than the upper-end-opened width of the knife groove 21, in the first embodiment, the cross section of the knife groove 21 along the cutting direction of the composite current collector is an upper-end-opened rectangle;In the second embodiment, the cross section of the knife groove 21 along the cutting direction of the composite current collector is an upper-end-opened trapezoid;In the third embodiment, the cross section of the knife groove 21 along the cutting direction of the composite current collector is an upper-end-opened arc.

[0032] The opening width of the knife groove 21 is 2mm-600mm.By limiting the opening width of the knife groove 21, the maximum width of the cutter body 1 along its radial cross section when extruded with the edge of the opening of the knife groove 21 is limited, which is beneficial to improve the cutting accuracy and reduce material waste during the cutting process of the composite current collector.

[0033] The utility model also provides a kind of composite current collector cutting equipment, please refer to Figures 1-4 , including: the unwinding device 3 for releasing the composite current collector to be cut, the winding device 4 for winding the composite current collector cut completed and the cutter structure, the composite current collector conveying path between the unwinding device 3 and the winding device 4 is provided with cutter roller 51, at least one the knife groove 21 is annularly arranged on the circumferential surface of the cutter roller 51, and the cutter roller 51 is provided with the cutter body 1 corresponding to the number of the knife groove 21 on the opposite side.

[0034] The knife groove 21 in the application can be machined on the cutter roller 51 by mechanical machining, laser machining and the like. According to the cutting requirements of the composite current collector, a plurality of knife grooves 21 can be arranged on the cutter roller 51. Correspondingly, a cutter body 1 corresponding to the number and specifications of the knife grooves 21 is arranged on the opposite side of the cutter roller 51. By arranging a plurality of knife grooves 21 and cutter bodies 1, the cutting of the composite current collector can be completed at one time, and the cutting efficiency of the composite current collector is improved. The cutter structure in the application is arranged on the conveying path of the composite current collector between the unwinding device 3 and the winding device 4. The unwinding device 3 continuously releases the composite current collector to be cut. After the cutter structure cuts the composite current collector, the winding device 4 does not stop winding the cut composite current collector. The overall structure is more compact, realizes the automatic cutting of the composite current collector, reduces the labor cost, and improves the cutting efficiency. In the embodiment of the application, one cutter body 1 is arranged to cooperate with one knife groove 21 to cut the composite current collector. After cutting, the composite current collector is divided into two parts. At this time, two winding devices 4 are needed to wind two composite current collectors with different widths or the same width. The number of winding devices 4 can be determined according to the number of cut composite current collectors. If a plurality of knife grooves 21 are arranged on one cutter roller 51, the width between adjacent knife grooves 21 is the width of one cut composite current collector. The width between adjacent knife grooves 21 can be adjusted adaptively according to the cutting width requirement of the composite current collector.

[0035] Further, a plurality of flattening rollers 52 are arranged on the composite current collector conveying path between the unwinding device 3 and the cutter structure. In the embodiment of the application, seven flattening rollers 52 are arranged in sequence on the composite current collector conveying path between the unwinding device 3 and the cutter structure. The flattening rollers 52 can convey the composite current collector. At the same time, the arrangement of the flattening rollers 52 can gradually flatten the composite current collector during the conveying process, thereby eliminating wrinkles. On the other hand, the tension of the flattening rollers can also be used to control the tension of the composite current collector, thereby avoiding the problem of wrinkles caused by uneven tension. The flattening roller 52 is provided with a stripe mark, that is, a groove is arranged on the flattening roller 52. The depth of the groove is shallow, which will not cause the problem of adhesion or stacking between the composite current collectors. The arrangement of the stripe mark can further improve the flatness of the composite current collector during the conveying process, thereby better flattening the composite current collector. The specific groove depth can be set according to the thickness of the composite current collector and the tension during the conveying process and other parameters. Here, no further description is given. In addition, the flattening roller 52 is located before the cutter structure on the conveying path of the composite current collector, so as to ensure that the composite current collector is in a flat state when the cutter structure cuts the composite current collector,

[0036] Further, at least one static electricity elimination device 53 is arranged on the composite current collector transport path between the unwinding device 3 and the cutter structure. In the embodiment of the present application, one static electricity elimination device 53 is arranged between the first flattening roller 52 and the second flattening roller 52 on the composite current collector transport path. During the cutting and transport of the composite current collector, static electricity is easily generated due to the friction and contact between the composite current collector and the equipment. Before the composite current collector is cut, the static electricity elimination device 53 is used to treat the composite current collector, so as to avoid the adhesion or damage of the composite current collector due to static electricity during the cutting of the composite current collector, and to reduce the production cost and material waste, and at the same time, to avoid the equipment failure caused by static electricity and the harm to the human body. It should be noted that a plurality of static electricity elimination devices 53 can be arranged according to actual needs, and the specific number is not limited herein.

[0037] Further, a tension roller 54 and a compression roller 55 are arranged on the composite current collector transport path between the cutter structure and the winding device 4. In the present application, the tension roller 54 and the compression roller 55 are arranged in sequence on the composite current collector transport path between the cutter structure and the winding device 4. If the compression roller 55 is arranged first and then the tension roller 54, the compression roller 55 can generate a certain pressure on the composite current collector, thereby interfering with the control of the tension of the tension roller 54. In addition, if the compression roller 55 is arranged first, the composite current collector can be damaged due to insufficient or excessive tension during the flattening process of the composite current collector by the compression roller 55. Arranging the tension roller 54 first can ensure that the composite current collector maintains appropriate tension during the transport process, thereby avoiding damage to the composite current collector due to improper tension during the flattening process. The tension roller 54 is mainly used to adjust and control the tension of the composite current collector during the transport process, so as to avoid damage such as stretching, tearing or deformation of the composite current collector due to relaxation or excessive tension during the transport process. The compression roller 55 is used to flatten the composite current collector and eliminate possible unevenness of the composite current collector during the transport process. Through the flattening effect of the compression roller 55, the bending, warping or wrinkling of the composite current collector due to cutting force or stress of the material itself during the cutting process of the composite current collector is corrected, so as to ensure that the composite current collector reaches a higher flatness before being wound, thereby improving the overall quality of the product. At the same time, after the composite current collector is flattened by the compression roller 55, the surface of the composite current collector is more flat, and the composite current collector can be more easily and uniformly wound by the winding device 4, thereby avoiding problems such as looseness and wrinkling during the winding process, and being beneficial to the subsequent processing of the composite current collector. In addition, a roller group is arranged on the composite current collector transport path between the cutter structure and the tension roller 54, so as to guide the transport of the composite current collector.

[0038] Further, the distance between the two extrusion points of the cutter body 1 in the radial section when the edge of the opening of the cutter groove 21 is extruded is less than the thickness of the composite current collector. The distance between the two extrusion points of the cutter body 1 in the radial section when the edge of the opening of the cutter groove 21 is extruded is 500nm-2000nm, which can better apply shear force to the composite current collector, so that the cutting of the composite current collector is more smooth, and the cutting efficiency of the composite current collector is improved. In addition, the sharpness of the cutter body 1 can be improved by adjusting the roughness of the surface of the cutter body 1, the distance between the two extrusion points of the cutter body 1 in the radial section when the cutter body 1 is extruded with the cutter groove 21, so as to facilitate the cutter body 1 to concentrate the shear force in the extrusion process, improve the cutting efficiency and cutting quality. The axial direction is along the length direction of the cutter body 1, and the radial direction is perpendicular to the length direction of the cutter body 1.

[0039] Further, the cutter body 1 and the cutter roller 51 are provided with a metal layer with a Mohs hardness of 5.5 or more. Specifically, the opening of the cutter groove 21 and the surrounding of the cutter body 1 and the cutter roller 51 are provided with a metal layer with a Mohs hardness of 5.5 or more, and the metal layer can be selected from chromium, tungsten, zirconium, iridium, titanium and the like. The strength of the cutter body 1, the opening of the cutter groove 21 and the surrounding is increased, the adhesion of the composite current collector during cutting is avoided, and the cutting efficiency and cutting precision of the composite current collector are improved.

[0040] In summary, the composite current collector cutter structure and the cutting equipment provided by the utility model have the advantages that the composite current collector cutter structure cuts the composite current collector by using the shear force generated when the circumferential surface of the cutter body is extruded with the opening edge of the cutter groove, effectively avoids the problems of edge curling and uneven edges after cutting of the composite current collector, and has the advantages of simple structure and good cutting effect.

[0041] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the claims attached to the utility model.

Claims

1. A composite current collector knife structure, characterized by, The application relates to a cutting knife structure for cutting composite current collectors. The opening width of the cutting groove is 2-600 mm.

2. The composite current collector cutter structure of claim 1, wherein The application relates to a cutting knife structure for cutting composite current collectors.

3. A composite current collector cutting apparatus characterized by, The application relates to a cutting knife structure for cutting composite current collectors. The application relates to a cutting knife structure for cutting composite current collectors.

4. The composite current collector cutting apparatus of claim 3, wherein, The application relates to a cutting knife structure for cutting composite current collectors.

5. The composite current collector cutting apparatus of claim 4, wherein, The application relates to a cutting knife structure for cutting composite current collectors.

6. The composite current collector cutting apparatus of claim 3, wherein, The application relates to a cutting knife structure for cutting composite current collectors.

7. The composite current collector cutting apparatus of claim 3, wherein The application relates to a cutting knife structure for cutting composite current collectors.

8. The composite current collector cutting apparatus of claim 3, wherein, The application relates to a cutting knife structure for cutting composite current collectors.

9. The composite current collector cutting apparatus of claim 8, wherein, The application relates to a cutting knife structure for cutting composite current collectors.

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