Cutting device and technology for composite current collector

Abstract

The cutting device comprises a machine body, a tension roller and a cutting assembly are arranged at the two ends of the machine body respectively, a conveying roller is arranged in the middle of the machine body, and a collecting groove is formed in the end, away from the tension roller, of the machine body; the cutting assembly comprises an upper cutter installed on the machine body in an up-down sliding mode, a telescopic piece used for driving the upper cutter to move up and down is arranged above the upper cutter, and supporting pieces are installed below the upper cutter at intervals. An inclined face is arranged on the side, away from the tension roller, of the upper end face of the supporting piece, the highest point of the inclined face is lower than the upper end face of the supporting piece, a lower cutter is arranged at the joint of the inclined face and the upper end face of the supporting piece, and a collecting cover is arranged on the inclined face on the side, away from the tension roller, of the lower cutter. According to the invention, the cutting chips can be prevented from being accumulated on the blade to form large burrs, and the large burrs are prevented from puncturing a diaphragm in the battery cell in the cutting process.

Description

Technical Field

[0001] The present invention relates to the technical field of composite current collector cutting, and particularly relates to a cutting device and a cutting process for a composite current collector. Background Art

[0002] The cutting of a composite current collector is a key process step in battery manufacturing (such as lithium-ion batteries). Especially for a multi-layer composite material composed of a metal layer (such as aluminum, copper) and a polymer substrate (such as PET, PP), its cutting quality directly affects the processing performance of the electrode and the safety of the battery. During the continuous production of a large quantity of composite current collectors with a simple shape (such as a rectangle), mechanical cutting is usually adopted. During the process of cutting the composite current collector by mechanical cutting, the upper and lower cutting tools need to intersect with each other for cutting. Burrs are extremely easy to form on the cutting section of the cutting tool. When the burrs on the cutting tool are too large, they will pierce the separator inside the battery cell, causing the positive and negative electrodes of the battery to short-circuit and posing a safety hazard. Summary of the Invention

[0003] Technical Problems to be Solved Aiming at the above-mentioned disadvantages of the prior art, the present invention provides a cutting device and a cutting process for a composite current collector, which can effectively solve the problem that during the process of cutting a composite current collector by the mechanical cutting method in the prior art, the upper and lower cutting tools need to intersect with each other for cutting, burrs are extremely easy to form on the cutting section of the cutting tool, and when the burrs on the cutting tool are too large, they will pierce the separator inside the battery cell, causing the positive and negative electrodes of the battery to short-circuit and posing a safety hazard.

[0004] Technical Solutions To achieve the above object, the present invention is realized through the following technical solutions: The present invention provides a cutting device for a composite current collector, including a machine body. Tension rollers and a cutting assembly are respectively arranged at both ends of the machine body. A conveying roller is arranged in the middle of the machine body. A collecting trough is arranged at one end of the machine body far from the tension roller. The cutting assembly includes an upper cutting knife slidably mounted up and down on the machine body. An expansion member for driving the upper cutting knife to move up and down is arranged above the upper cutting knife. Support members are spacedly mounted below the upper cutting knife. On one side of the upper end surface of the support member far from the tension roller, an inclined surface is provided. The highest point of the inclined surface is lower than the upper end surface of the support member. A lower cutting knife is arranged at the junction of the inclined surface and the upper end surface of the support member. A collecting cover is arranged on the inclined surface on the side of the lower cutting knife far from the tension roller. The collecting cover is used for collecting the burrs remaining on the upper cutting knife and the lower cutting knife.

[0005] Further, an unwinding roller is suspended and installed above the tension roller. The unwinding roller is used to release the composite current collector coil material. A pressing roller for pressing the composite current collector onto the support member is rotatably installed on one side of the support member close to the tension roller.

[0006] Further, guide rails are provided at both ends of the tension roller. Both ends of the tension roller are slidably connected to the guide rails. A screw rod for adjusting the tension roller to approach or move away from the cutting assembly is rotatably installed on the guide rails. The screw rod is threadedly connected to both ends of the tension roller.

[0007] Further, a collection through-hole is provided inside the collection hood. The projection contour of the side view of the collection through-hole is L-shaped. An exhaust pipe is connected and installed at the lower end of the collection through-hole. The exhaust pipe is used to continuously extract the gas inside the collection through-hole. The upper end of the collection through-hole is directly opposite to the side of the lower cutting knife away from the tension roller. A gap for the upper cutting knife to pass through is left between the collection through-hole and the lower cutting knife.

[0008] Further, an installation gap is left between the lower cutting knife and the vertical surface of the support member. The upper end of the installation gap is on the side of the cutting edge of the lower cutting knife. The lower end of the installation gap is directly opposite to the upper end of the collection through-hole. The installation gap is used to guide the residual debris on the surface of the lower cutting knife into the collection through-hole.

[0009] Further, the lower end of the collection through-hole is vertically arranged. An elastic sealing plate for restricting the inflow of gas is provided at the lower end of the collection through-hole. The exhaust pipe is located on the side of the lower half of the collection through-hole. A filter screen is provided at the connection between the exhaust pipe and the collection through-hole.

[0010] Further, an air extraction cylinder is also connected and arranged on the side of the collection through-hole. An air extraction piston is provided inside the air extraction cylinder. A sliding member is also provided on the side of the air extraction cylinder away from the collection through-hole. The sliding member is used to drive the air extraction piston to extract the gas inside the collection through-hole. The sliding member is used to drive the air extraction piston to extract the gas inside the collection through-hole during the downward pressing process of the upper cutting knife. An elastic member is also provided on the sliding member. The elastic member is used to drive the sliding member to reset towards the side of the collection hood.

[0011] Further, linkage plates are fixedly installed at both ends of the upper cutting knife. Inclined end faces are provided at both ends of the sliding member. The inclined end faces are directly below the lower end faces of the linkage plates. During the downward pressing process of the linkage plates, the inclined end faces are driven to move away from the collection hood.

[0012] A cutting process for a composite current collector includes the following steps: Step 1: First, check the substrate of the composite current collector. Install the rolled composite current collector on the unwinding roller, and draw one end of the composite current collector raw material roll around the tension roller and the conveying roller so that one end of the composite current collector raw material roll is located between the upper cutter and the lower cutter. Step 2: Then, drive the tension roller to approach or move away from the cutting assembly by rotating the screw to keep the tension of the composite current collector raw material at 0.5 - 2 N / mm² and stably convey the material. Step 3: Next, turn on the conveying roller and the cutting assembly to continuously move the composite current collector raw material to the cutting assembly. Drive the upper cutter to move up and down through the telescopic member to cut the composite current collector. Step 4: Finally, place the cut composite current collector in the collection tank for stacking and storage.

[0013] Beneficial effects The technical solution provided by the present invention has the following beneficial effects compared with the known public technologies: In the present invention, by fixedly installing a support member on the machine body, the lower cutter is fixedly installed on the support member, and at the same time, a collection cover is arranged on the support member. When the upper cutter moves downward to coincide with the lower cutter, the collection cover can collect the debris remaining on the blades of the upper cutter and the lower cutter, which can prevent the accumulation of cutting debris on the blades to form large burrs and avoid the large burrs piercing the diaphragm inside the battery cell during the cutting process.

[0014] In the present invention, by arranging collection through-holes inside the collection cover and setting an installation gap between the lower cutter and the vertical plane of the support member, and the lower part of the installation gap is directly opposite to the upper part of the collection through-hole. When the external air extraction device extracts air through the air extraction pipe, the gas extracts the debris on the blades of the upper cutter and the lower cutter from the upper ends of the collection through-hole and the installation gap respectively, and can collect the debris on the blades of the upper cutter and the lower cutter into the collection through-hole at the same time, avoiding the accumulation of debris on the upper cutter and the lower cutter to generate large burrs.

[0015] In the present invention, by arranging an elastic sealing plate at the lower end of the collection through-hole, the lower end of the collection through-hole can be kept closed during the air extraction process, so that the upper end of the collection through-hole has a greater suction force, and it can more easily absorb the cutting debris on the upper cutter and the lower cutter into the collection through-hole. By arranging the air extraction pipe on the side of the collection through-hole, it can prevent the collected cutting debris from falling into the air extraction pipe and avoid blocking the air extraction pipe with the cutting debris.

[0016] In the present invention, when the sliding member is reset under the drive of the elastic member, it drives the air extraction piston to instantaneously squeeze the gas into the interior of the collection through-hole, which can briefly open the elastic sealing plate at the lower opening of the collection through-hole, enabling the cutting debris collected inside the collection through-hole to fall downward into the support member, avoiding the accumulation of debris inside the collection through-hole and preventing the lower port of the collection through-hole from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is of the present invention Figure 1 partial enlarged structure schematic diagram at A; Figure 3 is a schematic diagram of the overall structure of another perspective of the present invention; Figure 4 is a side view of the conveying direction of the composite current collector of the present invention; Figure 5 is a schematic diagram of the overall structure of the support member of the present invention; Figure 6 is an exploded view of the cooperative installation of the collection cover and the sliding member of the present invention; Figure 7 is a side sectional view of the collection cover of the present invention.

[0019] The reference numerals in the drawings respectively represent: 1, machine body; 11, unwinding roller; 12, tension roller; 13, guide rail; 14, screw; 15, support roller group; 16, pressing roller; 2, cutting assembly; 21, upper cutter; 22, telescopic member; 23, linkage plate; 3, conveying roller; 4, collection trough; 5, support member; 501, inclined surface; 502, installation gap; 51, collection cover; 511, elastic sealing plate; 5101, collection through-hole; 52, lower cutter; 53, guide plate; 54, air extraction cylinder; 55, sliding member; 551, inclined end face; 56, elastic member; 57, air extraction pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] For this reason, the embodiments of the present invention provide a cutting device for a composite current collector, and its purpose is at least Embodiment: A cutting device for a composite current collector, as Figure 1 - Figure 4 shown, includes a machine body 1. Tension rollers 12 and a cutting assembly 2 are respectively arranged at both ends of the machine body 1. A conveying roller 3 is arranged in the middle of the machine body 1. A collecting groove 4 is arranged at one end of the machine body 1 away from the tension roller 12. The cutting assembly 2 includes an upper cutter 21 slidably mounted up and down on the machine body 1. An expansion member 22 for driving the upper cutter 21 to move up and down is arranged above the upper cutter 21. Support members 5 are spaced apart and installed below the upper cutter 21. On one side of the upper end surface of the support member 5 away from the tension roller 12, an inclined surface 501 is provided. The highest point of the inclined surface 501 is lower than the upper end surface of the support member 5. A lower cutter 52 is arranged at the junction of the inclined surface 501 and the upper end surface of the support member 5. A collecting cover 51 is arranged on the inclined surface 501 on the side of the lower cutter 52 away from the tension roller 12. The collecting cover 51 is used to collect the burrs remaining on the upper cutter 21 and the lower cutter 52.

[0023] In the present invention, by fixedly installing the support member 5 on the machine body 1, the lower cutter 52 is fixedly installed on the support member 5, and at the same time, the collecting cover 51 is arranged on the support member 5. When the upper cutter 21 moves downward to coincide with the lower cutter, the collecting cover 51 can collect the debris remaining on the cutting edges of the upper cutter 21 and the lower cutter 52, which can avoid the accumulation of cutting debris on the cutting edges to form large burrs and prevent the large burrs from piercing the diaphragm inside the battery cell during the cutting process.

[0024] Among them, since an inclined surface 501 is provided on the support member 5 and the lower cutting knife 52 is arranged at the junction of the inclined surface 501 and the upper end surface of the support member 5, better support can be provided for the middle part of the lower cutting knife 52. The setting of the inclined surface 501 enables the cut composite collector to slide more smoothly obliquely downward. In addition, since a collection cover 51 is provided on the inclined surface 501 and the height of the collection cover 51 is higher than that of the inclined surface 501, the composite collector can be supported, and the friction between the composite collector and the inclined surface 501 during the downward sliding process can be reduced.

[0025] In addition, a support roller group 15 is further provided on one side of the support member 5 facing the tension roller 12, and the support roller group 15 is used to support the composite collector onto the support member 5.

[0026] Furthermore, as Figure 1 and Figure 3 shown, a unwind roller 11 is suspended and installed above the tension roller 12, and the unwind roller 11 is used to release the composite collector roll material. A pressing roller 16 for pressing the composite collector onto the support member 5 is rotatably installed on one side of the support member 5 close to the tension roller 12; guide rails 13 are provided at both ends of the tension roller 12, and both ends of the tension roller 12 are slidably connected to the guide rails 13. A screw rod 14 for adjusting the tension roller 12 to approach or move away from the cutting assembly 2 is rotatably installed on the guide rails 13, and the screw rod 14 is threadedly connected to both ends of the tension roller 12.

[0027] Among them, by rotatably installing the pressing roller 16 on the support member 5, the composite collector raw material can be transported more stably, and a certain tension can be provided to the composite collector during the transportation process. By providing the guide rails 13 on the machine body 1 and arranging the screw rod 14 that can adjust the position of the tension roller 12 on the guide rails 13, the tension of the composite collector can be conveniently adjusted.

[0028] Furthermore, as Figure 6 and Figure 7 shown, a collection through hole 5101 is provided inside the collection cover 51. The projection contour of the side view of the collection through hole 5101 is L-shaped. An air extraction pipe 57 is connected and installed at the lower end of the collection through hole 5101. The air extraction pipe 57 is used to continuously extract the gas inside the collection through hole 5101. The upper end of the collection through hole 5101 is directly opposite to the side of the lower cutting knife 52 away from the tension roller 12. A gap for the upper cutting knife 21 to pass through is left between the collection through hole 5101 and the lower cutting knife 52; an installation gap 502 is left between the lower cutting knife 52 and the vertical surface of the support member 5. The upper end of the installation gap 502 is located on the side of the cutting edge of the lower cutting knife 52, and the lower end of the installation gap 502 is directly opposite to the upper end of the collection through hole 5101. The installation gap 502 is used to guide the residual debris on the surface of the lower cutting knife 52 into the collection through hole 5101.

[0029] Among them, by arranging a collection through-hole 5101 inside the collection hood 51, and arranging an installation gap 502 between the lower cutting knife 52 and the vertical surface of the support member 5, with the lower part of the installation gap 502 directly facing the upper part of the collection through-hole 5101, when an external air extraction device extracts air through the air extraction pipe 57, the gas extracts the gas at the cutting edges of the upper cutting knife 21 and the lower cutting knife 52 respectively from the upper end of the collection through-hole 5101 and the upper end of the installation gap 502, and can collect the debris on the cutting edges of the upper cutting knife 21 and the lower cutting knife 52 into the interior of the collection through-hole 5101 at the same time, avoiding the accumulation of debris on the upper cutting knife 21 and the lower cutting knife 52 to generate large burrs.

[0030] Furthermore, as Figure 5 and Figure 7 shown, the lower end of the collection through-hole 5101 is vertically arranged, and an elastic sealing plate 511 for restricting the inflow of gas is arranged at the lower end of the collection through-hole 5101. One side of the elastic sealing plate 511 is fixedly connected to one side of the lower port of the collection through-hole 5101. The air extraction pipe 57 is located on the side of the lower half section of the collection through-hole 5101, and a filter screen is arranged at the connection between the air extraction pipe 57 and the collection through-hole 5101.

[0031] Among them, by arranging the elastic sealing plate 511 at the lower end of the collection through-hole 5101, the lower end of the collection through-hole 5101 can be kept closed during the air extraction process, so that the upper end of the collection through-hole 5101 has greater suction force, and it is easier to absorb the cutting debris on the upper cutting knife 21 and the lower cutting knife 52 into the interior of the collection through-hole 5101 (after cutting is completed, the external air extraction device is turned off, and the side of the elastic sealing plate 511 away from the fixed end naturally droops under the action of gravity, so that the cutting debris falling into the interior of the collection through-hole 5101 can fall into the interior of the support member 5 for unified collection). By arranging the air extraction pipe 57 on the side of the collection through-hole 5101, it can be avoided that the collected cutting debris falls into the interior of the air extraction pipe 57 and blocks the air extraction pipe 57.

[0032] Furthermore, as Figure 6 and Figure 7As shown, an air extraction cylinder 54 is also communicatively provided on the side of the collection through-hole 5101. An air extraction piston is provided inside the air extraction cylinder 54. A sliding member 55 is further provided on the side of the air extraction cylinder 54 away from the collection through-hole 5101. The sliding member 55 is used to drive the air extraction piston to extract the gas inside the collection through-hole 5101. The sliding member 55 is used to drive the air extraction piston to extract the gas inside the collection through-hole 5101 during the downward pressing of the upper cutter 21. An elastic member 56 is further provided on the sliding member 55. The elastic member 56 is used to drive the sliding member 55 to reset towards the side of the collection cover 51. Both ends of the upper cutter 21 are fixedly installed with linkage plates 23. Inclined end faces 551 are provided at both ends of the sliding member 55. The inclined end faces 551 are located directly below the lower end faces of the linkage plates 23. During the downward pressing of the linkage plates 23, the inclined end faces 551 are driven to move away from the collection cover 51.

[0033] Among them, by providing the air extraction cylinder 54 on the side of the collection through-hole 5101 and simultaneously providing the linkage plates 23 at both ends of the upper cutter 21, when the upper cutter 21 is pressed downward, the linkage plates 23 will be driven to move downward, causing the lower ends of the linkage plates 23 to squeeze the inclined end faces 551 of the sliding member 55, causing the sliding member 55 to move away from the collection cover 51, so that the air extraction piston inside the air extraction cylinder 54 extracts the gas inside the collection through-hole 5101, enhancing the suction force at the upper port of the collection through-hole 5101 during the downward pressing of the upper cutter 21, and more thoroughly sucking the cutting residue debris on the cutting edges of the upper cutter 21 and the lower cutter 52 into the collection through-hole 5101. In addition, when the sliding member 55 is reset under the drive of the elastic member 56, the air extraction piston will be driven to instantaneously squeeze the gas into the collection through-hole 5101, which can briefly open the elastic sealing plate 511 at the lower opening of the collection through-hole 5101, enabling the cutting debris collected inside the collection through-hole 5101 to fall downward into the support member 5, avoiding the accumulation of debris inside the collection through-hole 5101 and preventing the lower port of the collection through-hole 5101 from being blocked.

[0034] In addition, a guide plate 53 is further provided on the side wall of the support member 5. The guide plate 53 is used to guide the horizontal sliding of the sliding member 55.

[0035] A cutting process for a composite current collector includes the following steps: Step 1: First, check the base material of the composite current collector. Install the rolled composite current collector on the unwinding roller 11, and draw one end of the composite current collector raw material roll around the tension roller 12 and the conveying roller 3, so that one end of the composite current collector raw material roll is located between the upper cutter 21 and the lower cutter 52. Step 2: Then, drive the tension roller 12 to approach or move away from the cutting assembly 2 by rotating the screw 14, so that the tension of the composite current collector raw material is maintained at 0.5 - 2 N / mm² to stably convey the material. Step 3: Then, turn on the conveyor rollers 3 and the cutting assembly 2 to continuously move the composite collector raw material to the cutting assembly 2, and drive the upper cutter 21 to move up and down through the telescopic member 22 to cut the composite collector. Step 4: Finally, place the cut composite collector inside the collection tank 4 for stacking and storage.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite current collector cutting device, comprising a body (1), wherein tension rollers (12) and cutting components (2) are respectively arranged at two ends of the body (1), a conveying roller (3) is arranged in the middle of the body (1), and a collecting trough (4) is arranged at one end of the body (1) away from the tension roller (12), characterized in that: The cutting assembly (2) comprises an upper cutter (21) slidably mounted on the machine body (1) in an upward and downward manner, a telescopic member (22) is arranged above the upper cutter (21) for driving the upper cutter (21) to move upward and downward, and a support member (5) is installed at intervals below the upper cutter (21); An inclined surface (501) is provided on the side of the upper end surface of the support member (5) away from the tension roller (12); the highest point of the inclined surface (501) is lower than the upper end surface of the support member (5); a lower cutter (52) is provided at the intersection of the inclined surface (501) and the upper end surface of the support member (5); a collecting cover (51) is provided on the inclined surface (501) on the side of the lower cutter (52) away from the tension roller (12); the collecting cover (51) is used to collect burrs remaining on the upper cutter (21) and the lower cutter (52).

2. A composite current collector cutting device according to claim 1, characterized in that: A reeling roller (11) is suspended above the tension roller (12), and the reeling roller (11) is used to release the composite current collector roll. A pressing roller (16) is rotatably mounted on a side of the support member (5) close to the tension roller (12) and is used to press the composite current collector onto the support member (5).

3. A composite current collector cutting device according to claim 2, characterized in that: Guide rails (13) are provided at both ends of the tension roller (12), and both ends of the tension roller (12) are slidably connected to the guide rails (13). A screw rod (14) for adjusting the tension roller (12) to approach or move away from the cutting assembly (2) is rotatably mounted on the guide rail (13), and the screw rod (14) is threadedly connected to both ends of the tension roller (12).

4. A composite current collector cutting device according to claim 3, characterized in that: A collecting through hole (5101) is provided inside the collecting cover (51); the side view projection profile of the collecting through hole (5101) is L-shaped; the lower end of the collecting through hole (5101) is connected to an exhaust pipe (57) installed thereon; the exhaust pipe (57) is used to continuously extract gas inside the collecting through hole (5101); the upper end of the collecting through hole (5101) is directly opposite to a side of the lower cutter (52) away from the tension roller (12); and a gap is left between the collecting through hole (5101) and the lower cutter (52) for the upper cutter (21) to pass through.

5. A composite current collector cutting device according to claim 4, characterized in that: An installation gap (502) is left between the lower cutter (52) and the vertical surface of the support member (5); the upper end of the installation gap (502) is located on one side of the blade of the lower cutter (52); the lower end of the installation gap (502) is directly opposite to the upper end of the collecting through hole (5101); the installation gap (502) is used to guide residual debris on the surface of the lower cutter (52) into the interior of the collecting through hole (5101).

6. The composite current collector cutting device according to claim 5, characterized in that: The lower end of the collecting through hole (5101) is arranged vertically, and an elastic sealing plate (511) for limiting the inflow of gas is arranged at the lower end of the collecting through hole (5101); the exhaust pipe (57) is located on the side of the lower half of the collecting through hole (5101), and a filter is arranged at the connection between the exhaust pipe (57) and the collecting through hole (5101).

7. A composite current collector cutting device according to claim 6, characterized in that: A vacuum cylinder (54) is also provided on the side of the collecting through hole (5101), and a vacuum piston is provided inside the vacuum cylinder (54). A sliding member (55) is also provided on the side of the vacuum cylinder (54) away from the collecting through hole (5101), and the sliding member (55) is used to drive the vacuum piston to extract gas from the inside of the collecting through hole (5101). The sliding member (55) is used to drive the vacuum piston to extract gas from the inside of the collecting through hole (5101) during the downward pressing process of the upper cutter (21). An elastic member (56) is also provided on the sliding member (55), and the elastic member (56) is used to drive the sliding member (55) to reset toward the side of the collecting cover (51).

8. The composite current collector cutting device according to claim 7, characterized in that: Both ends of the upper cutter (21) are fixedly mounted with linkage plates (23), and both ends of the sliding member (55) are provided with inclined end surfaces (551), the inclined end surfaces (551) being located directly below the lower end surface of the linkage plate (23), and the linkage plate (23) drives the inclined end surface (551) to move in a direction away from the collection cover (51) during the downward pressing process.

9. A composite current collector cutting process, using the cutting device in any one of claims 1 to 8, characterized in that: The steps include: Step 1: First, check the substrate of the composite current collector, install the rolled composite current collector on the unwinding roller (11), and pull one end of the composite current collector raw material roll around the tension roller (12) and the conveying roller (3), so that one end of the composite current collector raw material roll is located between the upper cutter (21) and the lower cutter (52); Step 2: Afterwards, the tension roller (12) is driven to approach or move away from the cutting assembly (2) by rotating the screw (14), so that the tension of the composite current collector raw material is maintained at 0.5-2N / mm², thereby stably conveying the material; Step 3: Then, the conveying roller (3) and the cutting assembly (2) are opened, so that the composite current collector raw material is continuously moved to the cutting assembly (2), and the upper cutting knife (21) is driven up and down by the telescopic member (22) to cut the composite current collector; Step 4: Finally, the cut composite current collectors are placed in a collection tank (4) and stacked for storage.

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