Slitting equipment

Abstract

The present application discloses a slitting device including an unwinding device, a first slitting device, a first conveying device, a second slitting device, and a plurality of winding devices. The unwinding device is used to deliver a pole piece material belt, the first slitting device is used to receive the pole piece material belt delivered by the unwinding device and cut the foil material area of ​​the pole piece material belt to form a plurality of sub-material belts, the first conveying device is used to receive the plurality of sub-material belts and lay them flat at intervals from each other before delivering them, the second slitting device is used to receive the plurality of sub-material belts laid flat at intervals from each other and cut the coating area of ​​the sub-material belt to form a plurality of pole pieces, the plurality of winding devices are connected to the second slitting device, and the plurality of winding devices are used to wind up the plurality of pole pieces. Using the slitting device of the present application, the number of cutters is small, the cost of the equipment is low, the volume of the equipment is small, and the space occupied is small.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed with the China Patent Office on February 13, 2023, bearing application number 202320201029.0 and entitled "Slitting Device," the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of lithium batteries, and in particular to slitting equipment. [Background technology]

[0003] In the related art, when manufacturing pole pieces for lithium-ion batteries, a pole piece material belt is mainly slit into narrow pole pieces with the required width for the battery core using slitting equipment. During slitting, the foil material area and the coating area of ​​the pole piece material belt must be cut. Because different cutter parameters are required for cutting different material areas, two slitting machines with different cutter parameters are typically used to cut the foil material area and the coating area of ​​the pole piece material belt, respectively. This results in cumbersome material loading and unloading processes and a large amount of equipment.

[0004] Due to the above-mentioned deficiencies, some existing slitting equipment is equipped with cutters with different parameters for sequentially cutting the foil material area and the coating area of ​​the pole piece material belt. However, such slitting equipment requires at least three cutters, one of which cuts the foil material area of ​​the pole piece material belt, then divides the pole piece material belt into two parts, and then cuts the coating area of ​​each of the two parts with two other cutters. This requires a large number of cutters, which increases the cost of the equipment, makes the equipment large, and occupies a large space. Summary of the Invention [Means for solving the problem]

[0005] The embodiments of the present application disclose a slitting device that has a small number of cutters, low equipment cost, small equipment volume, and small space occupation.

[0006] An embodiment of the present application discloses a slitting device, which includes an unwinding device, a first slitting device, a first conveying device, a second slitting device, and a plurality of winding devices; The unwinding device is used to unwind the pole piece material belt, the first slitting device is used to receive the pole piece material belt conveyed by the unwinding device and cut the foil material region of the pole piece material belt to form a plurality of sub-material belts; the first conveying device is used to receive the plurality of sub-material belts and to convey the plurality of sub-material belts in a flat manner with a space therebetween; The second slitting device is used to receive a plurality of the sub-material belts laid flat and spaced apart from one another and cut the coated areas of the sub-material belts to form a plurality of pole pieces, and the plurality of winding devices are used to wind up the plurality of the pole pieces.

[0007] Optionally, the first conveying device includes a plurality of first conveying mechanisms, a second conveying mechanism, and a plurality of first deviation correction mechanisms, the plurality of first conveying mechanisms being located between the first slitting device and the second conveying mechanism, and the plurality of first conveying mechanisms being spaced apart along a height direction of the slitting device; each of the first conveying mechanisms is used to receive a portion of a non-adjacent sub-material belt among the plurality of sub-material belts cut by the first slitting device, and to convey the plurality of sub-material belts to the second conveying mechanism; the second conveying mechanism is located between the first conveying mechanism and the second slitting device, and is used to receive the plurality of sub-material belts that are spaced apart and flatly disposed, and convey them to the second slitting device; The multiple first misalignment correction mechanisms are provided one for each of the multiple first conveying mechanisms, and the multiple misalignment correction mechanisms are used to adjust the positions of the multiple sub-material belts on the first conveying mechanism so that the spacing between the multiple sub-material belts along the width direction of the multiple sub-material belts is equal when the multiple sub-material belts are conveyed to the second conveying mechanism.

[0008] Optionally, the slitting equipment further includes a second conveying device, the second conveying device being located between the unwinding device and the first slitting device, and the second conveying mechanism being used to receive the pole piece material belt discharged by the unwinding device and transport the pole piece material belt to the first slitting device.

[0009] Optionally, the second conveying device includes a drive roller and a plurality of transmission rollers, the plurality of transmission rollers being arranged between the unwinding device and the first slitting device, and two adjacent transmission rollers being arranged at an interval, with the drive roller being arranged between two adjacent transmission rollers, and the drive roller being used to drive the pole piece material belt to be conveyed along the plurality of transmission rollers from the unwinding device to the first slitting device.

[0010] Optionally, the second conveying device further includes a tension balance roller, the tension balance roller being disposed between two adjacent transmission rollers therein, and the tension balance roller being used to adjust the tension of the pole piece material belt.

[0011] Optionally, the slitting device further includes a tension interruption mechanism, the tension interruption mechanism being provided on the first conveying device, and the tension interruption mechanism being used to interrupt the tension of the sub-material belt between the first slitting device and the second slitting device.

[0012] Optionally, the slitting equipment further includes a plurality of belt press mechanisms, each of which is provided between the winding device and the second slitting device, and each of which is used to pressurize each of the pole pieces to tension the pole pieces.

[0013] Optionally, the slitting device further includes a second misalignment correction mechanism, which is provided between the unwinding device and the first slitting device, and which is used to adjust the position where the pole piece material belt enters the first slitting device along the width direction of the pole piece material belt.

[0014] Optionally, the slitting equipment further includes a plurality of third conveying devices, each of which is provided between the winding device and the second slitting device, and the plurality of third conveying devices are used to transport the plurality of pole pieces from the second slitting device to the plurality of winding devices.

[0015] Optionally, the slitting device further includes a plurality of width measuring mechanisms, each of which is provided on each of the third conveying devices, and each of which is used to measure the width of the pole piece conveyed by each of the third conveying devices.

[0016] Optionally, the slitting device further includes a plurality of dust removal mechanisms, each of which is provided on each of the third conveying devices, and each of the dust removal mechanisms is used to remove dust from the pole pieces transported by each of the third conveying devices.

[0017] Optionally, each said dedusting mechanism includes one or more of a brush dedusting mechanism, an ultrasonic dedusting mechanism, and an air knife dedusting mechanism.

[0018] Optionally, the slitting device further includes a plurality of static electricity removal mechanisms, each of which is provided on each of the third conveying devices, and each of which is used to remove static electricity from the pole pieces conveyed by each of the third conveying devices.

[0019] Compared with the prior art, the embodiments of the present application have at least the following beneficial effects: In one embodiment of the present invention, a pole piece material belt is transported to a first slitting device by an unwinding device, and the first slitting device receives the pole piece material belt and cuts the foil material area of ​​the pole piece material belt to form multiple sub-material belts. The first transporting device receives the multiple sub-material belts and lays them flat and spaced apart before transporting them to a second slitting device. The second slitting device can simultaneously cut the coating areas of the multiple sub-material belts to form multiple pole pieces. This eliminates the need for multiple second slitting devices to cut the coating areas of the multiple sub-material belts individually, reducing the number of cutters, equipment cost, volume, and space required. Furthermore, laying the multiple sub-material belts flat and spaced apart from each other prevents the multiple sub-material belts from interfering with or even becoming entangled with each other. At the same time, multiple winding devices are used to wind up the multiple pole pieces to complete the packaging of the pole pieces.

[0020] In order to more clearly explain the technical solutions in the embodiments of the present application, the following briefly introduces the drawings necessary for the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a structural diagram of a slitting device disclosed in an embodiment of the present application. [Figure 2]1 is a structural diagram of a pole piece material belt disclosed in an embodiment of the present application. [Figure 3] 1 is a structural diagram of a sub-material belt disclosed in an embodiment of the present application. [Figure 4] FIG. 1 is a structural diagram of a slitting device according to a related art. DETAILED DESCRIPTION OF THE INVENTION

[0022] The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings of the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments, and other embodiments that can be obtained by those skilled in the art based on the embodiments of the present application without any creative efforts all belong to the protection scope of the present application.

[0023] In this application, the orientations or positional relationships indicated by the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "lateral," "longitudinal," etc. are based on the orientations or positional relationships shown in the drawings. These terms are primarily used to better explain this application and its embodiments, and are not intended to limit the devices, elements, or components shown to necessarily have a specific orientation or to be constructed and operated in a specific orientation.

[0024] In addition, some of the above terms may be used to express other meanings besides expressing orientation or positional relationship, for example, the term "on" may be used to express an attached or connected relationship in some situations. Those skilled in the art can understand the specific meanings of these terms in the present application according to specific situations.

[0025] Furthermore, the terms "mount," "install," "provide," "couple," and "connect" should be understood in a broad sense. For example, they may refer to a fixed connection, a removable connection, or an integral structure, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal communication between two devices, elements, or components. Those skilled in the art can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0026] Additionally, terms such as "first," "second," etc. are used primarily to distinguish between different devices, elements, or components (which may be different even if the specific type or structure is the same), and are not intended to indicate or imply the relative importance or number of the devices, elements, or components shown. Unless otherwise specified, "plurality" means two or more.

[0027] The present application discloses a slitting machine with a small number of cutters, low machine cost, small machine volume, and small space occupation.

[0028] Referring to Figures 1 and 2, it is a structural diagram of a slitting device 100 provided in an embodiment of the present application, which includes an unwinding device 1, a first slitting device 2, a first conveying device 3, a second slitting device 4 and multiple winding devices 5.

[0029] The unwinding device 1 is used to discharge the pole piece material belt 200, and the first slitting device 2 is used to receive the pole piece material belt 200 discharged by the unwinding device 1 and cut the foil material region of the pole piece material belt 200 to form a plurality of sub-material belts 201. The first conveying device 3 is used to receive the plurality of sub-material belts 201 and discharge the plurality of sub-material belts 201 spaced apart and flat. The second slitting device 4 is used to receive the plurality of sub-material belts 201 spaced apart and flat, and cut the coating region of the sub-material belt 201 to form a plurality of pole pieces 202. The plurality of winding devices 5 are used to wind up the plurality of pole pieces 202.

[0030] 2, the first slitting device 2 cutting the foil material region of the pole piece material belt 200 means cutting the first foil material region 200b. As shown in FIG. 3, the multiple sub-material belts 201 being arranged flatly and spaced apart means that the multiple sub-material belts 201 are arranged spaced apart along the width direction of the sub-material belt 201 and are arranged on the same plane.

[0031] In this embodiment, the unwinding device 1 transports the pole piece material belt 200 to the first slitting device 2, which receives the pole piece material belt 200 and cuts the foil material area of ​​the pole piece material belt 200 to form multiple sub-material belts 201. The first transporting device 3 receives the multiple sub-material belts 201 and lays them flat and spaced apart before transporting them to the second slitting device 4. The second slitting device 4 can simultaneously cut the coating areas 200a of the multiple sub-material belts 201 to form multiple pole pieces 202. This eliminates the need for multiple second slitting devices 4 to cut the coating areas 200a of the multiple sub-material belts 201 individually, reducing the number of cutters, equipment cost, volume, and space required. Furthermore, laying the multiple sub-material belts 201 flat and spaced apart from each other prevents the multiple sub-material belts 201 from interfering with or even becoming entangled with each other. At the same time, a plurality of pole pieces 202 are wound up using a plurality of winding devices 5, and the packaging of the pole pieces 202 is completed.

[0032] In the related art, as shown in FIG. 4, some existing slitting equipment requires at least three cutters, one of which, cutter 21, cuts the foil material area of ​​the pole piece material belt, then divides the pole piece material belt into two parts, and the coating area of ​​the two parts is cut by two other cutters, 22a and 22b. The two parts are usually transported in both vertical and horizontal directions, but the other two cutters, 22a and 22b, are installed above and below, respectively. Therefore, the existing slitting equipment occupies a large space in the vertical direction and requires lifting operations. As a result, the work is risky, the equipment structure is complex, and there are many dangerous points, which leads to a high failure rate, low operation rate, and low production efficiency.

[0033] In this embodiment, the second slitting device 4 can simultaneously cut the coating areas 200a of multiple sub-material belts 201 to form multiple pole pieces 202, thereby reducing the space occupied along the height of the slitting equipment 100, eliminating the need for lifting operations and reducing the work risk. In addition, the structure of the slitting equipment 100 in this embodiment is simple and there are fewer dangerous areas, resulting in a low failure rate, a high operating rate, and high production efficiency.

[0034] In some embodiments, as shown in FIG. 1, the first conveying device 3 includes a plurality of first conveying mechanisms 31, a second conveying mechanism 32, and a first misalignment correction mechanism 6.

[0035] The multiple first conveying mechanisms 31 are located in the first slitting device 2 and the second conveying mechanism 32, and the multiple first conveying mechanisms 31 are arranged at intervals along the vertical direction of the slitting equipment 100, and each first conveying mechanism 31 is used to receive a portion of non-adjacent sub-material belts 201 among the multiple sub-material belts 201 cut by the first slitting device 2 and to branch and convey the multiple sub-material belts 201 to the second conveying mechanism 32.

[0036] The second conveying mechanism 32 is located between the first conveying mechanism 31 and the second slitting device 4, and is used to receive multiple sub-material belts 201 that are spaced apart and laid flat, and transport them to the second slitting device 4.

[0037] A plurality of first shift correction mechanisms 6 are provided for each of the plurality of first conveying mechanisms 31, and the plurality of first shift correction mechanisms 6 are used to adjust the positions of the plurality of sub-material belts 201 on the first conveying mechanism 31 so that the spacing between the plurality of sub-material belts 201 along the width direction of the sub-material belts 201 is equal when the plurality of sub-material belts 201 are conveyed to the second conveying mechanism 32.

[0038] On the other hand, by arranging multiple first conveying mechanisms 31 at intervals along the height direction of the slitting equipment 100, the multiple first conveying mechanisms 31 can receive some of the non-adjacent sub-material belts 201 among the multiple sub-material belts 201 cut by the first slitting device 2 and branch off and transport them to the second conveying mechanism 32.Therefore, when the multiple sub-material belts 201 cut by the first slitting device 2 move away from the first slitting device 2, by branching off and transporting the non-adjacent sub-material belts 201, it is possible to avoid the multiple sub-material belts 201 interfering with each other and even becoming entangled.

[0039] On the other hand, the multiple first deviation correction mechanisms 6 adjust the positions of the multiple sub-material belts 201 on the first conveying mechanism 31 so that the spacing between the multiple sub-material belts 201 along the width direction of the sub-material belts 201 is equal when they are conveyed to the second conveying mechanism 32.Therefore, when the second conveying mechanism 32 conveys the multiple sub-material belts 201 to the second slitting device 4, the positions of the multiple sub-material belts 201 do not change and the spacing distance between the coating areas 200a of the multiple sub-material belts 201 on the same surface is maintained equal, thereby avoiding the occurrence of deviations and inconsistencies in the widths of the pole pieces 202 cut by the second slitting device 4, and resulting in a high yield of pole pieces 202.

[0040] Here, both the first transport mechanism 31 and the second transport mechanism 32 may include a plurality of transmission rollers.

[0041] 2, the pole piece material belt 200 has four coating regions 200a, a first foil material region 200b is located between two adjacent coating regions 200a, a second foil material region 200c is located on the side away from the first foil material region 200b of the first coating region 200a, and another second foil material region 200c is located on the side away from the first foil material region 200b of the fourth coating region 200a, when the pole piece material belt 200 reaches the first slip device 2, the first slip device 2 cuts the first foil material region 200b of the pole piece material belt 200 along the dotted lines shown in FIG. 2 to form four sub-material belts 201 shown in FIG. 3. When the four sub-material belts 201 are laid flat and spaced apart from one another and reach the second slitting device 4, the second slitting device 4 cuts the coating area 200a of the sub-material belts 201 along the dotted lines shown in Figure 3 to form pole pieces 202.

[0042] Taking the pole piece material belt 200 in FIG. 2 as an example, the above statement "each first conveying mechanism 31 is used to receive a portion of a non-adjacent sub-material belt among the multiple sub-material belts 201 cut by the first slitting device 2" means that the first conveying mechanism 31 receives the first and third sub-material belts 201 (which are not adjacent) moving from top to bottom along the paper surface of FIG. 2. The second conveying mechanism 32 receives the second and fourth sub-material belts 201 (which are not adjacent) moving from top to bottom along the paper surface of FIG. 2. The first and third sub-material belts 201 and 201 are not adjacent and are originally spaced apart from each other, so they do not interfere with or become entangled when entering one conveying mechanism. The second and fourth sub-material belts 201 and 201 are also not adjacent and are originally spaced apart from each other, so they do not interfere with or become entangled when entering another conveying mechanism.

[0043] In some embodiments, the number of coating areas 200a of the pole piece material belt 200 may be different from the number of the pole piece material belt 200 shown in FIG. 2, for example, the number of coating areas 200a may be two, three, five, etc., and is not particularly limited in this embodiment.

[0044] In some embodiments, as shown in FIG. 1 , the slitting apparatus 100 further includes a second conveying device 7, which is located between the unwinding device 1 and the first slitting device 2, and which is used to receive the pole piece material belt 200 conveyed by the unwinding device 1 and convey the pole piece material belt 200 to the first slitting device 2.

[0045] Optionally, the second conveying device 7 includes a drive roller 71 and a plurality of transmission rollers 72, the plurality of transmission rollers 72 being arranged between the unwinding device 1 and the first slitting device 2, and two adjacent transmission rollers 72 being arranged at an interval, and a drive roller 71 being arranged between the two adjacent transmission rollers 72, the drive roller 71 being used to drive the pole piece material belt 200 to be conveyed along the plurality of transmission rollers 72 from the unwinding device 1 to the first slitting device 2. In this way, the drive roller 71 can provide power to drive the pole piece material belt 200 to move along the plurality of transmission rollers 72, thereby conveying the pole piece material belt 200 from the unwinding device 1 to the first slitting device 2 along the distribution direction of the plurality of transmission rollers 72, the conveying process is stable, the pole piece material belt 200 does not shift, and it is advantageous to improving cutting accuracy.

[0046] For example, the second conveying device 7 further includes a tension balance roller 73, which is disposed between two adjacent transmission rollers 72 therein, and is used to adjust the tension of the pole piece material belt 200. In this way, the tension swing roller 73 is used to adjust the tension of the pole piece material belt 200 according to the tension requirement for the pole piece material belt 200 when the first slitting device 2 cuts the foil material region of the pole piece material belt 200, thereby making it possible to match the tension of the pole piece material belt 200 to the cutting requirement of the first slitting device 2, thereby improving cutting accuracy and improving cutting effect.

[0047] Optionally, the slitting equipment 100 further includes a tension interrupting mechanism 8, which is provided in the first conveying device 3 and is used to interrupt the tension of the sub-material belt 201 between the first slitting device 2 and the second slitting device 4. In this way, the tension interrupting mechanism 8 interrupts the tension of the sub-material belt 201, so that the tension requirements of the first slitting device 2 for the pole piece material belt 200 and the tension requirements of the second slitting device 4 for the pole piece material belt 200 can be met respectively, without affecting each other, and the cutting accuracy and effect are improved.

[0048] In some embodiments, the slitting apparatus 100 further includes a plurality of belt press mechanisms 9, and a belt press mechanism 9 is provided between each winding device 5 and the second slitting device 4, and each belt press mechanism 9 is used to pressurize each pole piece 202 to tension the pole piece 202. In this way, when there is no tension in the pole piece 202, the belt press mechanism 9 presses the pole piece 202, and the pole piece 202 can be tensioned by being tensioned, which makes it easier for the winding device 5 to wind the pole piece 202.

[0049] Illustratively, the slitting equipment 100 further includes a second deviation correction mechanism 10, which is provided between the unwinding device 1 and the first slitting device 2, and which is used to adjust the position of the pole piece material belt 200 along the width direction of the pole piece material belt 200. In this way, by the second deviation correction mechanism 10 adjusting the position of the pole piece material belt 200 in the width direction of the pole piece material belt 200, when the pole piece material belt 200 enters the first slitting device 2, the first slitting device 2 can cut the foil material region of the pole piece material belt 200, resulting in high cutting accuracy and a high yield.

[0050] In some embodiments, the slitting apparatus 100 further includes a plurality of third conveying devices 11, each connected to a plurality of winding devices 5 and a second slotting device 4, and the plurality of third conveying devices 11 respectively transport the plurality of pole pieces 202 from the second slitting device 4 to the plurality of winding devices 5.

[0051] For example, the slitting equipment 100 further includes a plurality of width measurement mechanisms 12, one for each of the plurality of third conveying devices 11, and each width measurement mechanism 12 is used to measure the width of the pole piece 202 conveyed by each of the third conveying devices 11. In this way, the width measurement mechanisms 12 measure the width of the pole piece 202, so that it can be determined whether the width of the pole piece 202 meets the processing requirements. Thus, after the winding device 5 winds up the pole piece 202, the wound pole piece material belt 200 can be sorted, and the pole piece 202 that meets the processing requirements can be shipped from the factory and conveyed to the next station for processing, while the pole piece 202 that does not meet the processing requirements can be reprocessed or recycled as waste material, etc.

[0052] In some embodiments, the slitting equipment 100 further includes a plurality of dust removal mechanisms 13, each of which is provided for each of the plurality of third conveying devices 11, and each width measuring mechanism 12 is used to remove dust from the pole pieces 202 conveyed by each of the third conveying devices 11. In this way, by removing dust from the pole pieces 202, the cleanliness of the pole pieces 202 is ensured, and it is possible to prevent contaminated pole pieces 202 from being shipped from the factory after being wound by the winding device 5, causing quality problems.

[0053] Optionally, each dust removal mechanism 13 includes one or more of a brush dust removal mechanism 13, an ultrasonic dust removal mechanism 13, and an air knife dust removal mechanism 13. In this way, various different dust removal mechanisms 13 are provided in this embodiment, and can be selected according to actual situations to meet different usage needs.

[0054] In some embodiments, the slitting equipment 100 further includes a plurality of static electricity removal mechanisms (not shown), one for each of the plurality of third conveying devices 11, and each static electricity removal mechanism is used to remove static electricity from the pole pieces 202 conveyed by each of the third conveying devices 11. In this way, the static electricity removal mechanisms remove static electricity from the pole pieces 202, thereby preventing the pole pieces 202 from attracting dust and fine particles due to static electricity and causing contamination of the pole pieces 202, and improving the yield of the pole pieces.

[0055] Optionally, the slitting device 100 further includes a color mark sensor 14 and a marking module (not shown), the color mark sensor 14 is provided on the second conveying device 7 and is used to detect the tape and non-coated areas of the pole piece material belt 200. The marking module is provided on the third conveying device 11 and is used to mark the pole pieces 202. For example, the marking module may be a laser marking machine or a labeling machine, but is not specifically limited in this embodiment.

[0056] In the slitting apparatus 100 according to the embodiment of the present application, the unwinding device 1 delivers the pole piece material belt 200 to the first slitting device 2, which receives the pole piece material belt 200 and cuts the foil material region of the pole piece material belt 200 to form multiple sub-material belts 201. The first conveying device 3 receives the multiple sub-material belts 201 and lays them flat and spaced apart before delivering them to the second slitting device 4. The second slitting device 4 can simultaneously cut the coating regions 200a of the multiple sub-material belts 201 to form multiple pole pieces 202. This eliminates the need for multiple second slitting devices 4 to cut the coating regions 200a of the multiple sub-material belts 201 individually, reducing the number of cutters, the cost of the apparatus, the volume of the apparatus, and the space it occupies. Furthermore, laying the multiple sub-material belts 201 flat and spaced apart from each other prevents the multiple sub-material belts 201 from interfering with or even becoming entangled with each other. At the same time, the plurality of pole pieces 202 are wound up respectively using the plurality of winding devices 5, and the packaging of the pole pieces 202 is completed.

[0057] The above has described in detail the slitting equipment disclosed in the examples of the present application, but this specification applies specific examples to explain the principles and embodiments of the present application, and the description of the above examples is only intended to help understand the slitting equipment of the present application and its core idea. At the same time, those skilled in the art can make changes in specific embodiments and application scope based on the idea of ​​the present application, and as stated above, the contents of this specification should not be understood as limiting the present application. [Explanation of symbols]

[0058] 100, slitting equipment; 1, unwinding device; 2, first slitting device; 3, first conveying device; 31, first conveying mechanism; 32, second conveying mechanism; 4, second slitting device; 5, winding device; 6, first deviation correction mechanism; 7, second conveying device; 71, drive roller; 72, transmission roller; 73, tension balance roller; 8, tension interrupting mechanism; 9, belt press mechanism; 10, second deviation correction mechanism; 11, third conveying device; 12, width measurement mechanism; 13, dust removal mechanism; 131, brush dust removal mechanism; 132, ultrasonic dust removal mechanism; 14, color mark sensor; 200, pole piece material belt; 200a, coating area; 200b, first foil material area; 200c, second foil material area; 201, sub-material belt; 202, pole piece.

Claims

1. A slitting device, An unwinding device, the unwinding device being used to convey the pole piece material belt; a first slitting device that receives the pole piece material belt conveyed by the unwinding device and is used to cut a foil material region of the pole piece material belt to form a plurality of sub-material belts; a first conveying device used to receive a plurality of the sub-material belts and to convey the plurality of sub-material belts in a flat manner spaced apart from one another; a second slitting device that receives a plurality of the sub-material belts that are spaced apart and laid flat, and that is used to cut the coated areas of the sub-material belts to form a plurality of pole pieces; a plurality of winding devices, the plurality of winding devices including a plurality of winding devices used to wind the plurality of pole pieces; the first conveying device includes a plurality of first conveying mechanisms, a second conveying mechanism, and a plurality of first deviation correction mechanisms, the plurality of first conveying mechanisms are located between the first slit device and the second conveying mechanism, and the plurality of first conveying mechanisms are provided at intervals along a height direction of the slit device; each of the first conveying mechanisms is used to receive a portion of a non-adjacent sub-material belt among the plurality of sub-material belts cut by the first slitting device, and to branch and convey the plurality of sub-material belts to the second conveying mechanism; the second conveying mechanism is located between the first conveying mechanism and the second slitting device, and is used to receive the plurality of sub-material belts that are spaced apart and laid flat, and convey them to the second slitting device; the plurality of first deviation correction mechanisms are provided for each of the plurality of first conveying mechanisms, and the plurality of first deviation correction mechanisms are used to adjust the positions of the plurality of sub material belts on the first conveying mechanisms so that intervals between the plurality of sub material belts along the width direction of the sub material belts are equal when the plurality of sub material belts are conveyed to the second conveying mechanism; The slitting device further includes a tension interrupting mechanism, the tension interrupting mechanism being provided on the first conveying device, and the tension interrupting mechanism being used to interrupt the tension of the sub-material belt between the first slitting device and the second slitting device.

2. The slitting device according to claim 1, further comprising a second conveying device, the second conveying device being located between the unwinding device and the first slitting device, the second conveying device being used to receive the pole piece material belt conveyed by the unwinding device and convey the pole piece material belt to the first slitting device.

3. 3. The slitting equipment according to claim 2, characterized in that the second conveying device includes a drive roller and a plurality of transmission rollers, the plurality of transmission rollers being arranged between the unwinding device and the first slitting device, and two adjacent transmission rollers being arranged at an interval, and the drive roller being arranged between two adjacent transmission rollers, and the drive roller being used to drive the pole piece material belt to be conveyed along the plurality of transmission rollers from the unwinding device to the first slitting device.

4. 4. The slitting equipment according to claim 3, wherein the second conveying device further includes a tension balance roller, the tension balance roller being disposed between two adjacent transmission rollers therein, and the tension balance roller being used to adjust the tension of the pole piece material belt.

5. The slitting equipment according to claim 1, further comprising a plurality of belt press mechanisms, each of which is provided between the winding device and the second slitting device, and each of which is used to pressurize each of the pole pieces to tension the pole pieces.

6. 2. The slitting device according to claim 1, further comprising a second deviation correction mechanism, the second deviation correction mechanism being provided between the unwinding device and the first slitting device, and the second deviation correction mechanism being used to adjust the position where the pole piece material belt enters the first slitting device along the width direction of the pole piece material belt.

7. The slitting equipment according to claim 1, further comprising a plurality of third conveying devices, each of which is provided between the winding device and the second slitting device, and the plurality of third conveying devices are used to transport the plurality of pole pieces from the second slitting device to the plurality of winding devices.

8. The slitting equipment according to claim 7, further comprising a plurality of width measuring mechanisms, each of which is provided on each of the third conveying devices, and each of which is used to measure the width of the pole piece conveyed by each of the third conveying devices.

9. The slitting equipment according to claim 7, further comprising a plurality of dust removal mechanisms, each of which is provided for each of the third conveying devices, and each of which is used to remove dust from the pole pieces conveyed by each of the third conveying devices.

10. 10. The slitting machine of claim 9, wherein each said dedusting mechanism comprises one or more of a brush dedusting mechanism, an ultrasonic dedusting mechanism, and an air knife dedusting mechanism.

11. The slitting equipment according to claim 7, further comprising a plurality of static electricity removal mechanisms, each of which is provided on each of the third conveying devices, and each of which is used to remove static electricity from the pole pieces transported by each of the third conveying devices.

Images