Unwinding die cutting device

Abstract

The utility model relates to the technical field of battery manufacturing equipment, and discloses an unwinding and die cutting device which comprises a rack, a pole piece unwinding module, a die cutting module and a cache module, and the rack is provided with a first mounting space and a second mounting space which are distributed up and down; the pole piece unwinding module comprises a first unwinding mechanism and a second unwinding mechanism, the die cutting module comprises a first die cutting mechanism and a second die cutting mechanism, and the first unwinding mechanism and the first die cutting mechanism are sequentially arranged in the first mounting space in the first direction; the second unwinding mechanism and the second die cutting mechanism are sequentially arranged in the second mounting space in the first direction, so that the first material strip and the second material strip are subjected to die cutting to form a first tab material strip and a second tab material strip to be output; and the first tab material belt and the second tab material belt pass through the cache module and then are output from the rack side by side. According to the unwinding die cutting device, the space layout is optimized, the occupied area of the whole machine is reduced, and manual operation adjustment and follow-up maintenance are facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery manufacturing equipment, specifically relating to an unwinding and die-cutting device. Background Technology

[0002] With the rapid development of society, lithium batteries have advantages such as high voltage, high energy density, high safety, and low self-discharge rate, making them a promising new energy source; with the further development of science and technology, people's demand for lithium batteries is increasing.

[0003] As is well known, in the manufacturing process of lithium batteries, the positive and negative electrode sheets of the battery need to be cut to the required lengths separately, and then the battery electrode sheets are stacked. The stacking process of lithium batteries refers to stacking the positive and negative electrode sheets of the battery alternately to form a battery cell.

[0004] Therefore, in battery production equipment, the unwinding and die-cutting device is used to unwind the positive and negative electrode sheets of the roll material separately and cut them to the required lengths; the stacking device is used to stack the positive and negative electrode sheets of the battery into battery cells.

[0005] Most lithium battery electrode unwinding and die-cutting equipment on the market are large in size and have problems such as large footprint and inconvenient operation and maintenance, which will affect equipment management. Utility Model Content

[0006] In order to solve the problems of large size, large footprint, inconvenient operation and maintenance, and difficulty in upgrading and modifying the electrode unwinding and die-cutting equipment in the prior art, this utility model provides an unwinding and die-cutting device.

[0007] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0008] In a first aspect, this utility model provides an unwinding die-cutting device, comprising:

[0009] The rack has a first installation space and a second installation space distributed vertically.

[0010] The electrode unwinding module includes a first unwinding mechanism and a second unwinding mechanism. The first unwinding mechanism is disposed in the first installation space and is used to unwind a first roll of material into a first strip for output along a first direction. The second unwinding mechanism is disposed in the second installation space and is used to unwind a second roll of material into a second strip for output along the first direction.

[0011] A die-cutting module, comprising a first die-cutting mechanism and a second die-cutting mechanism, wherein the first die-cutting mechanism is disposed within the first mounting space and located in the unwinding direction of the first unwinding mechanism, and is used to die-cut the first strip into a first tab strip; the second die-cutting mechanism is disposed within the second mounting space and located in the unwinding direction of the second unwinding mechanism, and is used to die-cut the second strip into a second tab strip; and

[0012] A buffer module is positioned in the output direction of the die-cutting module to output the first tab strip and the second tab strip side-by-side from the frame.

[0013] In some alternative implementations, the first unwinding mechanism and the second unwinding mechanism are offset along a second direction perpendicular to the first direction.

[0014] In some optional implementations, the system further includes: a first detection module and a dust removal module. The first detection module includes a first detection mechanism and a second detection mechanism. The first detection mechanism is disposed within the first installation space and located between the first die-cutting mechanism and the first buffer mechanism. The second detection mechanism is disposed within the second installation space and located between the second die-cutting mechanism and the second buffer mechanism. The dust removal module includes a first dust removal mechanism and a second dust removal mechanism. The first dust removal mechanism is disposed within the first installation space and located between the first die-cutting mechanism and the first buffer mechanism. The second dust removal mechanism is disposed within the second installation space and located between the second die-cutting mechanism and the second buffer mechanism.

[0015] In some optional implementations, the device further includes: an electrode positioning module and an electrode cutting module, wherein the electrode positioning module and the electrode cutting module are disposed on the outside of the frame along a first direction; the electrode positioning module is used to locate the first electrode position of the first electrode strip and the second electrode position of the second electrode strip respectively; the electrode cutting module is used to cut the first electrode strip into several independent first electrode pieces according to the located first electrode position, and to cut the second electrode strip into several independent second electrode pieces according to the located second electrode position.

[0016] In some optional implementations, the electrode positioning module includes a first electrode positioning mechanism and a second electrode positioning mechanism. The first electrode positioning mechanism is disposed opposite to the first electrode strip and is used to position the first electrode of the first electrode strip. The second electrode positioning mechanism is disposed opposite to the second electrode strip and is used to position the second electrode of the second electrode strip.

[0017] The electrode cutting module includes a first cutting mechanism and a second cutting mechanism. The first cutting mechanism is disposed opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the positioned position of the first electrode. The second cutting mechanism is disposed opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the positioned position of the second electrode.

[0018] In some optional implementations, a V-angle punching module is also included. The V-angle punching module is disposed between the electrode positioning module and the electrode cutting module. The V-angle punching module includes a first V-angle punching mechanism and a second V-angle punching mechanism. The first V-angle punching mechanism is disposed opposite to the first electrode strip and is used to punch a V-angle for the first electrode sheet according to the positioned position of the first electrode. The second V-angle punching mechanism is disposed opposite to the second electrode strip and is used to punch a V-angle for the second electrode sheet according to the positioned position of the second electrode.

[0019] In some optional implementations, a conveying module, a second detection module, and a waste removal module are also included. The conveying module is disposed on the outside of the tab cutting module along the first direction, and the second detection module and the waste removal module are disposed sequentially along the conveying module.

[0020] The conveying module includes a first conveying mechanism and a second conveying mechanism, which are arranged side by side and in parallel. The first conveying mechanism is used to convey a first electrode sheet along a first direction, and the second conveying mechanism is used to convey a second electrode sheet along the first direction.

[0021] The second detection module is used to detect the first electrode sheet conveyed by the first conveying mechanism and the second electrode sheet conveyed by the second conveying mechanism, respectively;

[0022] The waste removal module is located in the output direction of the second detection module and is used to remove the first electrode and / or the second electrode that are found to be defective by the second detection module.

[0023] In some optional implementations, the second detection module includes a first size detection mechanism and a second size detection mechanism. The first size detection mechanism is disposed opposite to the first conveying mechanism and is used to perform size detection on the first electrode sheet conveyed by the first conveying mechanism. The second size detection mechanism is disposed opposite to the second conveying mechanism and is used to perform size detection on the second electrode sheet conveyed by the second conveying mechanism.

[0024] In some optional implementations, the second detection module further includes a first line scanning mechanism, a second line scanning mechanism, a third line scanning mechanism, and a fourth line scanning mechanism. The first line scanning mechanism and the second line scanning mechanism are arranged opposite to the first conveying mechanism and are respectively located above and below the first conveying mechanism, and are used to perform defect detection on the first electrode sheet conveyed by the first conveying mechanism. The third line scanning mechanism and the fourth line scanning mechanism are arranged opposite to the second conveying mechanism and are respectively located above and below the second conveying mechanism, and are used to perform defect detection on the second electrode sheet conveyed by the second conveying mechanism.

[0025] In some optional implementations, the buffer module includes a first buffer mechanism and a second buffer mechanism. The first buffer mechanism is disposed within the first mounting space and located in the output direction of the first die-cutting mechanism; the second buffer mechanism is disposed within the second mounting space and located in the output direction of the second die-cutting mechanism; the first electrode strip and the second electrode strip pass through the first buffer mechanism and the second buffer mechanism respectively, and are then output side by side from the frame.

[0026] The first buffer mechanism includes at least a first correction component, a first tension control component, and a first traction component; the second buffer mechanism includes at least a second correction component, a second tension control component, and a second traction component.

[0027] In summary, this utility model has at least the following advantages:

[0028] The present invention provides an unwinding and die-cutting device that optimizes the spatial layout of the unwinding and die-cutting device by dividing the first and second unwinding mechanisms of the electrode unwinding module and the first and second die-cutting mechanisms of the die-cutting module into upper and lower sections, and outputting the first and second electrode ear strips with high and low distributions side by side through a buffer module. This reduces the footprint of the entire machine, and allows maintenance personnel to observe and maintain the unwinding and die-cutting mechanisms in the upper and lower sections simultaneously, facilitating manual operation, adjustment, and subsequent maintenance. Attached Figure Description

[0029] Figure 1 This is a structural block diagram of the unwinding and die-cutting device provided in an embodiment of the present utility model.

[0030] Figure 2 A side view of the first unwinding mechanism and the second unwinding mechanism of the unwinding die-cutting apparatus provided in an embodiment of the present utility model.

[0031] Figure 3 for Figure 1 Enlarged schematic diagram of part A.

[0032] Figure 4 for Figure 1 Enlarged schematic diagram of part B.

[0033] Figure 5 for Figure 1 Enlarged schematic diagram of part C.

[0034] Marked in the image:

[0035] 10. Rack;

[0036] 21. First unwinding mechanism;

[0037] 22. Second unwinding mechanism;

[0038] 31. First cache mechanism;

[0039] 41. First die-cutting mechanism;

[0040] 51. The first testing institution;

[0041] 61. First dust removal unit;

[0042] 71. First electrode positioning mechanism;

[0043] 81. First cutting mechanism;

[0044] 91. First punch V-angle mechanism;

[0045] 101. First dimensional inspection mechanism;

[0046] 102. First-line scanning mechanism;

[0047] 103. Second-line scanning mechanism;

[0048] 104. First waste discharge mechanism;

[0049] 105. First conveying mechanism;

[0050] 106. Second conveying mechanism. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] In order to solve the problems of existing electrode unwinding and die-cutting equipment, such as large size, large footprint, heavy weight, inconvenience of disassembly and transportation, complex structure, crowded layout of functional modules, inconvenience of operation and maintenance, and difficulty in upgrading and modification, this utility model provides an unwinding and die-cutting device.

[0054] like Figure 1-3 As shown, the unwinding and die-cutting device provided in this embodiment includes: a frame 10, an electrode unwinding module, a die-cutting module, and a buffer module.

[0055] The rack 10 has a first installation space and a second installation space distributed vertically.

[0056] The electrode unwinding module includes a first unwinding mechanism 21 and a second unwinding mechanism 22. The first unwinding mechanism 21 is disposed in a first installation space and is used to unwind the first roll of material into a single layer of first strip output along a first direction. The second unwinding mechanism 22 is disposed in a second installation space and is used to unwind the second roll of material into a single layer of second strip output along the first direction.

[0057] The die-cutting module includes a first die-cutting mechanism 41 and a second die-cutting mechanism. The first die-cutting mechanism 41 is disposed in the first mounting space and located in the unwinding direction of the first unwinding mechanism 21, and is used to complete the die-cutting of the first tab of the first strip, thereby outputting the first tab strip. The second die-cutting mechanism is disposed in the second mounting space and located in the unwinding direction of the second unwinding mechanism 22, and is used to complete the die-cutting of the second tab of the second strip, thereby outputting the second tab strip.

[0058] The buffer module is set in the output direction of the die-cutting module to output the first and second tab strips side by side from the frame 10.

[0059] In this embodiment, the specific structure of the rack 10 can be understood as follows: the rack 10 is a frame with an installation space, and a horizontal baffle is set in the middle of the rack 10 to divide the installation space of the rack 10 into a first installation space and a second installation space distributed vertically.

[0060] The first unwinding mechanism 21 and the first die-cutting mechanism 41 are sequentially arranged in the first mounting space of the frame 10 along the first direction to die-cut the first strip unwound by the first unwinding mechanism 21 into the first tab strip for output. The second unwinding mechanism 22 and the second die-cutting mechanism are sequentially arranged in the second mounting space of the frame 10 along the first direction to die-cut the second strip unwound by the second unwinding mechanism 22 into the second tab strip for output. After passing through the buffer module, the first tab strip and the second tab strip are output side by side from the frame 10, so as to convey the first tab strip and the second tab strip with high and low distribution to the same height.

[0061] In this embodiment, the first unwinding mechanism 21 and the second unwinding mechanism 22 are respectively positive unwinding and negative unwinding, and the first unwinding mechanism 21 and the second unwinding mechanism 22 are arranged on the same side of the frame 10 and unwind in the same direction.

[0062] In this preferred embodiment, there are two first unwinding mechanisms 21 and two second unwinding mechanisms 22. The two first unwinding mechanisms 21 are staggered in the horizontal direction, and the two second unwinding mechanisms 22 are staggered in the horizontal direction. The first unwinding mechanisms 21 and the second unwinding mechanisms 22 are staggered in a second direction perpendicular to the first direction, that is, the first unwinding mechanisms 21 and the second unwinding mechanisms 22 are staggered in the longitudinal direction. This is conducive to achieving feeding on the same side, reducing the space required for feeding and unloading, and making the spatial layout and utilization rate of the unwinding die-cutting device more reasonable.

[0063] Simultaneously, the first and second electrode ear tapes are separated to avoid dust pollution; after passing through the buffer module, the first and second electrode ear tapes are arranged side by side for output, avoiding the impact of transfer on the conveying position accuracy, simplifying the overall structure, making the spatial layout of the unwinding die-cutting device more reasonable and aesthetically pleasing, and occupying less space; it is convenient for maintenance personnel to observe the entire unwinding process of the whole machine, making it easier to find and deal with problems encountered during the unwinding process, and the operating space is larger, which facilitates manual operation, adjustment and subsequent maintenance.

[0064] In this preferred embodiment, the first die-cutting mechanism 41 and the second die-cutting mechanism have the same structure and both use laser to realize the die-cutting function, so as to realize the first material strip and the second material strip to be die-cut into the first tab material strip and the second tab material strip respectively by laser.

[0065] In this preferred embodiment, the buffer module includes a first buffer mechanism 31 and a second buffer mechanism. The first buffer mechanism 31 is disposed in the first mounting space and located in the output direction of the first die-cutting mechanism 41. The second buffer mechanism is disposed in the second mounting space and located in the output direction of the second die-cutting mechanism. The first electrode strip and the second electrode strip pass through the first buffer mechanism 31 and the second buffer mechanism respectively and are output from the frame 10 side by side.

[0066] Preferably, the first buffer mechanism 31 includes at least a first correction component, a first tension control component, and a first traction component; the second buffer mechanism includes at least a second correction component, a second tension control component, and a second traction component.

[0067] Therefore, the first buffer mechanism 31 and the second buffer mechanism respectively realize the tension control and position control of the first and second pole ear material belts during the conveying process, and further realize the precise control of the relevant parameters of the first and second pole ear material belts during the conveying process, so as to ensure the operation accuracy and quality of the first and second pole ear material belts in subsequent processes.

[0068] In this preferred embodiment, the unwinding die-cutting device further includes: a first detection module and a dust removal module. The first detection module includes a first detection mechanism 51 and a second detection mechanism. The first detection mechanism 51 is disposed in the first installation space and located between the first die-cutting mechanism 41 and the first buffer mechanism 31. The second detection mechanism is disposed in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism. The dust removal module includes a first dust removal mechanism 61 and a second dust removal mechanism. The first dust removal mechanism 61 is disposed in the first installation space and located between the first die-cutting mechanism 41 and the first buffer mechanism 31. The second dust removal mechanism is disposed in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism.

[0069] Preferably, the first electrode ear strip, which is die-cut by the first die-cutting mechanism 41, first passes through the first dust removal mechanism 61 for dust removal, and then passes through the first inspection mechanism 51 for defect detection, thus ensuring the accuracy and precision of the inspection.

[0070] Preferably, the first detection mechanism 51 and the second detection mechanism have the same structure and both adopt a CCD detection system to detect defects on the surface of the first and second electrode strips after laser die-cutting, as well as the electrode outline.

[0071] The first dust removal mechanism 61 and the second dust removal mechanism have the same structure. Both adopt air suction dust removal to remove the dust attached to the first electrode ear material belt and the second electrode ear material belt, so as to keep their surfaces clean and avoid dust contamination of the first electrode ear material belt and the second electrode ear material belt, thereby ensuring the accuracy of subsequent processing.

[0072] In this preferred embodiment, the unwinding die-cutting device further includes an electrode positioning module and an electrode cutting module, which are disposed on the outside of the frame 10 along a first direction. The electrode positioning module is used to position the first electrode position of the first electrode strip and the second electrode position of the second electrode strip, respectively. The electrode cutting module is used to cut the first electrode strip into several independent first electrode pieces according to the positioned first electrode position, and to cut the second electrode strip into several independent second electrode pieces according to the positioned second electrode position.

[0073] Specifically, the electrode positioning module includes a first electrode positioning mechanism 71 and a second electrode positioning mechanism. The first electrode positioning mechanism 71 is arranged opposite to the first electrode strip and is used to position the first electrode of the first electrode strip to achieve positioning for cutting the first electrode sheet. The second electrode positioning mechanism is arranged opposite to the second electrode strip and is used to position the second electrode of the second electrode strip to achieve positioning for cutting the second electrode sheet.

[0074] The electrode cutting module includes a first cutting mechanism 81 and a second cutting mechanism. The first cutting mechanism 81 is arranged opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the position of the first electrode. The second cutting mechanism is arranged opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the position of the second electrode.

[0075] Preferably, the unwinding die-cutting device further includes a V-angle punching module, which is disposed between the electrode positioning module and the electrode cutting module. The V-angle punching module includes a first V-angle punching mechanism 91 and a second V-angle punching mechanism. The first V-angle punching mechanism 91 is disposed opposite to the first electrode strip and is used to punch a V-angle for the first electrode sheet according to the positioned position of the first electrode. The second V-angle punching mechanism is disposed opposite to the second electrode strip and is used to punch a V-angle for the second electrode sheet according to the positioned position of the second electrode.

[0076] In this embodiment, given that the first and second electrode strips are conveyed side-by-side along the first direction, in order to optimize the spatial layout of the unwinding die-cutting device, such as... Figure 4 As shown, the first electrode positioning mechanism 71 and the second electrode positioning mechanism have the same structure and are arranged opposite to each other, the first V-angle punching mechanism 91 and the second V-angle punching mechanism have the same structure and are arranged opposite to each other, and the first cutting mechanism 81 and the second cutting mechanism have the same structure and are arranged opposite to each other.

[0077] Both the first electrode positioning mechanism 71 and the second electrode positioning mechanism adopt a CCD detection system. After the position of the first electrode strip is determined by the first electrode positioning mechanism 71, the first electrode strip is formed into a V-angle by the first V-angle punching mechanism 91, and then cut into individual first electrode sheets by the first cutting mechanism 81. After the position of the second electrode strip is determined by the second electrode positioning mechanism, the second electrode strip is formed into a V-angle by the second V-angle punching mechanism, and then cut into individual second electrode sheets by the second cutting mechanism.

[0078] The first electrode is the positive electrode, and the second electrode is the negative electrode.

[0079] This embodiment is a preferred embodiment, combined with Figure 5 As shown, the unwinding die-cutting device also includes a conveying module, a second detection module, and a waste removal module. The conveying module is arranged along the first direction in the output direction of the tab cutting module, and the second detection module and the waste removal module are arranged sequentially along the conveying module.

[0080] The conveying module includes a first conveying mechanism 105 and a second conveying mechanism 106. The first conveying mechanism 105 and the second conveying mechanism 106 are arranged side by side and in parallel. The first conveying mechanism 105 is used to convey the first electrode sheet along the first direction, and the second conveying mechanism 106 is used to convey the second electrode sheet along the first direction.

[0081] The second detection module is used to detect the first electrode sheet conveyed by the first conveying mechanism 105 and the second electrode sheet conveyed by the second conveying mechanism 106, respectively.

[0082] The waste removal module is located in the output direction of the second detection module and is used to reject the unqualified first electrode and / or second electrode detected by the second detection module.

[0083] Specifically, the second detection module includes a first size detection mechanism 101, a second size detection mechanism, a first line scanning mechanism 102, a second line scanning mechanism 103, a third line scanning mechanism, and a fourth line scanning mechanism. The first size detection mechanism 101 is arranged opposite to the first conveying mechanism 105 and is used to perform size detection on the first electrode sheet conveyed by the first conveying mechanism 105. The second size detection mechanism is arranged opposite to the second conveying mechanism 106 and is used to perform size detection on the second electrode sheet conveyed by the second conveying mechanism 106. The first line scanning mechanism 102 and the second line scanning mechanism 103 are arranged opposite to the first conveying mechanism 105 and are located above and below the first conveying mechanism 105, respectively, and are used to perform defect detection on the first electrode sheet conveyed by the first conveying mechanism 105. The third line scanning mechanism and the fourth line scanning mechanism are arranged opposite to the second conveying mechanism 106 and are located above and below the second conveying mechanism 106, respectively, and are used to perform defect detection on the second electrode sheet conveyed by the second conveying mechanism 106.

[0084] Preferably, the first dimension detection mechanism 101 and the second dimension detection mechanism have the same structure and are arranged opposite to each other. The first dimension detection mechanism 101 and the second dimension detection mechanism adopt a CCD detection system to realize the dimension detection of the first electrode and the second electrode, respectively, so as to distinguish whether the first electrode and / or the second electrode is qualified.

[0085] The first line scanning mechanism 102, the second line scanning mechanism 103, the third line scanning mechanism, and the fourth line scanning mechanism have the same structure and use a line scanning camera. The first line scanning mechanism 102 and the second line scanning mechanism 103 are located on the upper and lower sides of the first electrode, respectively, and are used to detect whether there are defects on the upper and lower surfaces of the first electrode. The third line scanning mechanism and the fourth line scanning mechanism are located on the upper and lower sides of the second electrode, respectively, and are used to detect whether there are defects on the upper and lower surfaces of the second electrode.

[0086] The waste removal module also includes a first waste removal mechanism 104 and a second waste removal mechanism. The first waste removal mechanism 104 and the second waste removal mechanism have the same structure and are located below or outside the conveying module. The first waste removal mechanism 104 is arranged opposite to the first conveying mechanism 105 and is used to reject and unload the first electrode sheet that is not in compliance with the size or has defects detected by the first size detection mechanism 101, the first line scanning mechanism 102 and the second line scanning mechanism 103. The second waste removal mechanism is arranged opposite to the second conveying mechanism 106 and is used to reject and unload the second electrode sheet that is not in compliance with the size or has defects detected by the second size detection mechanism, the third line scanning mechanism and the fourth line scanning mechanism.

[0087] The unwinding and die-cutting device provided in this embodiment adopts a modular design with segmented layouts for each functional module. The positive and negative electrode conveying mechanisms are arranged in a straight parallel layout to avoid affecting the accuracy of electrode conveying position during transfer. At the same time, the structure is simplified, the overall width of the machine is reduced, making it easier for operators to observe the entire sheet-making process and to easily identify problems encountered during processing. The operating space is larger, facilitating manual operation, adjustment, and subsequent maintenance. Furthermore, the modular structure of the entire machine allows for the addition, removal, and modification of functional modules according to customer needs, facilitating model changeovers and machine upgrades. This also makes the layout of each functional module more reasonable, reduces the footprint, and makes it easy to disassemble and assemble each functional module. The machine is lightweight, making it convenient for transportation.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0090] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0091] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0092] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A die-cutting device for unwinding, characterized in that, include: The rack (10) has a first installation space and a second installation space distributed vertically; The electrode unwinding module includes a first unwinding mechanism (21) and a second unwinding mechanism (22). The first unwinding mechanism (21) is disposed in the first installation space and is used to unwind the first roll of material into a first strip output along the first direction. The second unwinding mechanism (22) is disposed in the second installation space and is used to unwind the second roll of material into a second strip output along the first direction. The die-cutting module includes a first die-cutting mechanism (41) and a second die-cutting mechanism. The first die-cutting mechanism (41) is disposed in the first installation space and located in the unwinding direction of the first unwinding mechanism (21), and is used to die-cut the first strip into a first electrode tab strip. The second die-cutting mechanism is disposed in the second installation space and located in the unwinding direction of the second unwinding mechanism (22), and is used to die-cut the second strip into a second electrode tab strip. as well as The buffer module is set in the output direction of the die-cutting module and includes a first buffer mechanism (31) and a second buffer mechanism. The first buffer mechanism (31) is set in the first mounting space and is located in the output direction of the first die-cutting mechanism (41). The second buffer mechanism is set in the second mounting space and is located in the output direction of the second die-cutting mechanism. The first electrode strip and the second electrode strip pass through the first buffer mechanism (31) and the second buffer mechanism respectively, and are output side by side from the frame (10).

2. The unwinding die-cutting device according to claim 1, characterized in that, The first unwinding mechanism (21) and the second unwinding mechanism (22) are offset along a second direction perpendicular to the first direction.

3. The unwinding die-cutting device according to claim 1, characterized in that, Also includes: The first detection module includes a first detection mechanism (51) and a second detection mechanism. The first detection mechanism (51) is disposed in the first installation space and located between the first die-cutting mechanism (41) and the first buffer mechanism (31). The second detection mechanism is disposed in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism. The dust removal module includes a first dust removal mechanism (61) and a second dust removal mechanism. The first dust removal mechanism (61) is disposed in the first installation space and located between the first die-cutting mechanism (41) and the first buffer mechanism (31). The second dust removal mechanism is disposed in the second installation space and located between the second die-cutting mechanism and the second buffer mechanism.

4. The unwinding die-cutting device according to claim 1, characterized in that, Also includes: The electrode positioning module and the electrode cutting module are arranged on the outside of the frame (10) along a first direction. The electrode positioning module is used to locate the first electrode position of the first electrode strip and the second electrode position of the second electrode strip respectively. The electrode cutting module is used to cut the first electrode strip into several independent first electrode pieces according to the located first electrode position, and to cut the second electrode strip into several independent second electrode pieces according to the located second electrode position.

5. The unwinding die-cutting device according to claim 4, characterized in that, The electrode positioning module includes a first electrode positioning mechanism (71) and a second electrode positioning mechanism. The first electrode positioning mechanism (71) is disposed opposite to the first electrode strip and is used to position the first electrode of the first electrode strip. The second electrode positioning mechanism is disposed opposite to the second electrode strip and is used to position the second electrode of the second electrode strip. The electrode cutting module includes a first cutting mechanism (81) and a second cutting mechanism. The first cutting mechanism (81) is arranged opposite to the first electrode strip and is used to cut the first electrode strip into several independent first electrode pieces according to the positioned position of the first electrode. The second cutting mechanism is arranged opposite to the second electrode strip and is used to cut the second electrode strip into several independent second electrode pieces according to the positioned position of the second electrode.

6. The unwinding die-cutting device according to claim 4, characterized in that, It also includes a V-angle punching module, which is disposed between the electrode positioning module and the electrode cutting module. The V-angle punching module includes a first V-angle punching mechanism (91) and a second V-angle punching mechanism. The first V-angle punching mechanism (91) is disposed opposite to the first electrode strip and is used to punch a V-angle for the first electrode sheet according to the positioned position of the first electrode. The second V-angle punching mechanism is disposed opposite to the second electrode strip and is used to punch a V-angle for the second electrode sheet according to the positioned position of the second electrode.

7. The unwinding die-cutting device according to claim 4, characterized in that, It also includes a conveying module, a second detection module, and a waste discharge module. The conveying module is arranged along the first direction on the outside of the tab cutting module, and the second detection module and the waste discharge module are arranged sequentially along the conveying module. The conveying module includes a first conveying mechanism (105) and a second conveying mechanism (106), which are arranged side by side and in parallel. The first conveying mechanism (105) is used to convey a first electrode sheet along a first direction, and the second conveying mechanism (106) is used to convey a second electrode sheet along the first direction. The second detection module is used to detect the first electrode sheet conveyed by the first conveying mechanism (105) and the second electrode sheet conveyed by the second conveying mechanism (106), respectively; The waste removal module is located in the output direction of the second detection module and is used to remove the first electrode and / or the second electrode that are found to be defective by the second detection module.

8. The unwinding die-cutting device according to claim 7, characterized in that, The second detection module includes a first size detection mechanism (101) and a second size detection mechanism. The first size detection mechanism (101) is arranged opposite to the first conveying mechanism (105) and is used to perform size detection on the first electrode sheet conveyed by the first conveying mechanism (105). The second size detection mechanism is arranged opposite to the second conveying mechanism (106) and is used to perform size detection on the second electrode sheet conveyed by the second conveying mechanism (106).

9. The unwinding die-cutting device according to claim 7, characterized in that, The second detection module further includes a first line scanning mechanism (102), a second line scanning mechanism (103), a third line scanning mechanism, and a fourth line scanning mechanism. The first line scanning mechanism (102) and the second line scanning mechanism (103) are arranged opposite to the first conveying mechanism (105) and are respectively located above and below the first conveying mechanism (105), and are used to perform defect detection on the first electrode sheet conveyed by the first conveying mechanism (105). The third line scanning mechanism and the fourth line scanning mechanism are arranged opposite to the second conveying mechanism (106) and are respectively located above and below the second conveying mechanism (106), and are used to perform defect detection on the second electrode sheet conveyed by the second conveying mechanism (106).

10. The unwinding die-cutting device according to claim 1, characterized in that, The first buffer mechanism (31) includes at least a first correction component, a first tension control component, and a first traction component; the second buffer mechanism includes at least a second correction component, a second tension control component, and a second traction component.

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