Pole lug smoothing mechanism and die cutting device

Abstract

The utility model provides a tab flattening mechanism and a die cutting device. The tab flattening mechanism comprises a mounting frame, an upper side air outlet mechanism and a lower side air outlet mechanism, wherein the upper side air outlet mechanism and the lower side air outlet mechanism are arranged on the mounting frame; the upper side air outlet mechanism and the lower side air outlet mechanism are respectively provided with an upper side air nozzle and a lower side air nozzle, the upper side air nozzle and the lower side air nozzle are oppositely arranged on the two sides of the pole piece and are close to a winding roller of the pole piece, and the upper side air nozzle and the lower side air nozzle are respectively used for blowing air to smooth a pole lug on the side part of the pole piece. According to the tab flattening mechanism disclosed by the utility model, the tab at the side part of the pole piece can be symmetrically blown through the upper side air nozzle and the lower side air nozzle which are symmetrically arranged at the two sides of the pole piece, so that the tab is prevented from deforming and bending towards the outer sides of the two surfaces of the pole piece, and the problem that the pole piece is scrapped due to the folding of the tab when the pole piece is rolled can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery manufacturing technical field, especially relates to a tab smoothing mechanism. BACKGROUND

[0002] In the production of lithium ion battery, because of battery product requirement, after cutting tab on pole piece, tab rolling operation is carried out. But in normal production process, single tab can be deformed because of interference or external force, when pole piece is rolled into roll, tab will be rolled into pole roll in the way of bending. If it is in the state of bending, the pressure of pressure roller and pole roll can make the bending of tab become dead fold, and the crease cannot be restored. It is easy to cause pole piece defect, and causes waste and cost increase. SUMMARY

[0003] Therefore, the utility model aims at providing a tab smoothing mechanism to improve the problem of pole piece scrap caused by tab folding during rolling.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A tab smoothing mechanism, comprising a mounting frame, and an upper side air outlet mechanism and a lower side air outlet mechanism arranged on the mounting frame;

[0006] The upper side air outlet mechanism and the lower side air outlet mechanism respectively have upper side tuyere and lower side tuyere, the upper side tuyere and the lower side tuyere are arranged symmetrically on the two sides of the pole piece, and are arranged close to the rolling roller of the pole piece, and the upper side tuyere and the lower side tuyere are respectively used for blowing and smoothing the tab on the side of the pole piece.

[0007] Further, the upper side air outlet mechanism comprises a first pipeline, one end of the first pipeline is used for being connected with gas source, and the other end of the first pipeline is connected with the upper side tuyere, and / or the lower side air outlet mechanism comprises a second pipeline, one end of the second pipeline is used for being connected with gas source, and the other end of the second pipeline is connected with the lower side tuyere.

[0008] Further, the first pipeline is provided with a first adjusting device for adjusting the air volume of the upper side tuyere, and / or the second pipeline is provided with a second adjusting device for adjusting the air volume of the lower side tuyere.

[0009] Further, the first pipeline and / or the second pipeline adopt stainless steel pipe fittings.

[0010] Further, the upper side air nozzle is provided with a first clamping part connected with the first pipeline; and / or, the lower side air nozzle is provided with a second clamping part connected with the second pipeline.

[0011] Further, the upper side air nozzle and the lower side air nozzle are both provided with a guide part for guiding the airflow.

[0012] Further, the air outlet wind speed of the upper side air nozzle and / or the lower side air nozzle is between 15m / s and 25m / s.

[0013] Further, the mounting frame is provided with an adjusting mechanism for adjusting the air outlet angle of the upper side air nozzle and / or the lower side air nozzle.

[0014] Further, the adjusting mechanism comprises a first gear and a second gear engaged with each other; the upper side air outlet mechanism and the lower side air outlet mechanism are connected with the first gear and the second gear respectively, and the air outlet angle of the upper side air nozzle and the lower side air nozzle is adjusted by the relative rotation of the first gear and the second gear.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The upper side air outlet mechanism and the lower side air outlet mechanism are arranged on the both sides of the pole piece, the upper side air nozzle and the lower side air nozzle are used for symmetrically blowing air to the pole lug of the pole piece, the pole lug is prevented from deforming and bending to the outside of the two surfaces of the pole piece, the problem that the pole piece is scrapped due to the folding of the pole lug during the winding of the pole piece is improved, the quality of the winding of the pole piece is guaranteed, and good use effect is achieved.

[0017] In addition, the first pipeline is arranged, the upper side air nozzle is communicated with the gas source, the second pipeline is arranged, the lower side air nozzle is communicated with the gas source, air is supplied to the upper side air nozzle and the lower side air nozzle, the first adjusting device is arranged, the air volume of the upper side air nozzle is adjusted, the second adjusting device is arranged, and the air volume of the lower side air nozzle is adjusted.

[0018] Secondly, the first pipeline and the second pipeline adopt stainless steel pipe fittings, so that the upper side air outlet mechanism and the lower side air outlet mechanism are arranged, and the relative positions of the upper side air nozzle and the lower side air nozzle are guaranteed.

[0019] In addition, the guide portions on the upper air nozzles and the lower air nozzles are beneficial to the flow direction of the air flow and can reduce the influence of external air vortex, and ensure the blowing and flattening effect of the tab. The adjusting mechanism can realize the adjustment of the air outlet angle of the upper air nozzles and the lower air nozzles. The adjusting mechanism adopts the first gear and the second gear connected in meshing, which is simple in structure, convenient to operate and implement, and can realize the synchronous adjustment of the upper air nozzles and the lower air nozzles, thereby solving the problem of insufficient space for adjusting the lower side of the tab and reducing the difficulty of adjustment.

[0020] Another purpose of the utility model lies in providing a die cutting device, the die cutting device is equipped with the tab flattening mechanism as described above.

[0021] The die cutting device of the utility model can effectively prevent the tab from being folded and improve the preparation quality of the tab by adopting the symmetrical blowing method to flatten the tab on the side of the tab during the winding of the tab after the die cutting of the tab. DRAWINGS

[0022] The drawings that form a part of the utility model are used to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute an improper limitation on the utility model. In the drawings:

[0023] Figure 1 The structure schematic view of the application state of the tab flattening mechanism is described in the embodiments of the utility model;

[0024] Figure 2 The structure schematic view of the tab flattening mechanism is described in the embodiments of the utility model;

[0025] Figure 3 The structure schematic view of the tab flattening mechanism without the mounting frame is described in the embodiments of the utility model;

[0026] Figure 4 The structure schematic view of the upper air nozzle is described in the embodiments of the utility model;

[0027] Figure 5 The structure schematic view of the lower air nozzle is described in the embodiments of the utility model;

[0028] Mark explanation:

[0029] 1, mounting frame; 2, first pipeline; 3, second pipeline; 4, upper air nozzle; 5, lower air nozzle; 6, first adjusting device; 7, second adjusting device; 11, first gear; 12, second gear;

[0030] 10, tab; 101, tab; 20, winding roller; 30, compression roller; 40, air outlet; 41, clamping portion; 42, guide portion. DETAILED DESCRIPTION

[0031] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0032] In the description of the utility model, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, if the terms "first", "second" appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connection", "connecting", "connecting piece" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0034] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0035] Embodiment one

[0036] The present embodiment relates to a tab smoothing mechanism, which can improve the problem of tab scrap due to tab folding when the tab is rolled.

[0037] In the overall structure, as shown in the drawing, Figures 1 to 3 The tab smoothing mechanism of the present embodiment comprises a mounting frame 1, and an upper air outlet mechanism and a lower air outlet mechanism arranged on the mounting frame 1. The upper air outlet mechanism and the lower air outlet mechanism respectively have an upper air nozzle 4 and a lower air nozzle 5, which are arranged on the two sides of the tab 10 opposite to each other and close to the rolling roller 20 of the tab 10, and the upper air nozzle 4 and the lower air nozzle 5 are respectively used for blowing and smoothing the tab ear 101 on the side of the tab 10.

[0038] At this time, as in the structure above, the upper air outlet mechanism and the lower air outlet mechanism are arranged on the upper and lower surfaces of the pole piece 10 symmetrically, and the upper air nozzle 4 and the lower air nozzle 5 are arranged on the upper and lower surfaces of the pole piece 10 symmetrically, so that the upper air nozzle 4 and the lower air nozzle 5 blow air to the pole lug 101 on the side of the pole piece 10 symmetrically, so as to prevent the pole lug 101 from being deformed and bent outwardly on the two surfaces of the pole piece 10, thereby improving the problem that the pole piece 10 is scrapped due to the folding of the pole lug 101 when the pole piece 10 is wound, and ensuring the quality of the winding of the pole piece 10.

[0039] Based on the overall structure as above, in detail, in the pole lug flattening mechanism of the embodiment, the mounting frame 1 is used to provide a mounting basis for the upper air outlet mechanism and the lower air outlet mechanism and the adjusting mechanism described below, and the mounting frame 1 can be fixed independently on a fixed basis such as the ground, or can be fixed on a rack for mounting the winding roller 20. In the embodiment, as a preferred, the upper air outlet mechanism and the lower air outlet mechanism are basically the same in structure.

[0040] Continuing to refer to Figures 1 to 3 In the embodiment, the upper air outlet mechanism includes a first pipeline 2, one end of the first pipeline 2 is used to be connected with the gas source, and the other end of the first pipeline 2 is connected with the upper air nozzle 4. The gas source is connected with the upper air nozzle 4 through the first pipeline 2, which is conducive to supplying air to the upper air nozzle 4. The lower air outlet mechanism also includes a second pipeline 3, one end of the second pipeline 3 is used to be connected with the gas source, and the other end of the second pipeline 3 is connected with the lower air nozzle 5. The gas source is connected with the upper air nozzle 4 through the second pipeline 3, which is conducive to supplying air to the lower air nozzle 5.

[0041] It is worth mentioning that the first pipeline 2 and the second pipeline 3 can be connected with the same gas source, so as to save the number of gas sources used. Of course, the first pipeline 2 and the second pipeline 3 can also be connected with different gas sources, which is also acceptable. In addition, it is also worth mentioning that the first pipeline 2 and the second pipeline 3 of the embodiment are basically the same, which is conducive to improving the universality of the pipeline.

[0042] As a preferred embodiment, in the embodiment, a first adjusting device 6 for adjusting the air volume of the upper air nozzle 4 is arranged on the first pipeline 2, and a second adjusting device 7 for adjusting the air volume of the lower air nozzle 5 is also arranged on the second pipeline 3. The arrangement of the first adjusting device 6 is conducive to adjusting the air volume of the upper air nozzle 4, and the arrangement of the second adjusting device 7 is conducive to adjusting the air volume of the lower air nozzle 5. In specific implementation, the first adjusting device 6 and the second adjusting device 7 are preferably pneumatic proportional valves, which are mature in technology, convenient to connect in the pipeline, and can accurately adjust the flow of gas in the pipeline.

[0043] It should be noted that, in addition to the first pipe 2 is provided with the first adjusting device 6, the second pipe 3 is provided with the second adjusting device 7, also can only in the first pipe 2 is provided with the first adjusting device 6, or only in the second pipe 3 is provided with the second adjusting device 7, so it is also possible.

[0044] Also need to be explained, the upper side tuyere 4 of the air volume can be the same with the lower side tuyere 5 of the air volume, also can be adjusted to different air volume, specific can be according to the actual winding of the tab 101 on the pole piece 10 state carries on the corresponding setting, or using prior art realizes the air volume of the upper side tuyere 4 and the air volume of the lower side tuyere 5 real-time adjustment.

[0045] In the embodiment, the first pipe 2 and the second pipe 3 are preferably made of stainless steel pipe, so that the upper side air blowing mechanism and the lower side air blowing mechanism can be arranged, and the relative positions of the upper side tuyere 4 and the lower side tuyere 5 can be ensured.

[0046] Referring to Figure 1 and Figure 3 It is shown that, in the embodiment, the mounting frame 1 is provided with an adjusting mechanism for adjusting the air blowing angle of the upper side tuyere 4 and the lower side tuyere 5, so that the blowing effect of the tab 101 can be ensured. As a preferred embodiment, the adjusting mechanism of the embodiment comprises a first gear 11 and a second gear 12 engaged with each other. The upper side air blowing mechanism and the lower side air blowing mechanism are connected to the first gear 11 and the second gear 12 respectively, and the upper side tuyere 4 and the lower side tuyere 5 adjust the air blowing angle by the relative rotation of the first gear 11 and the second gear 12.

[0047] Specifically, the first gear 11 and the second gear 12 are rotatably arranged on the mounting frame 1, the first pipe 2 passes through the rotation center of the first gear 11 and is fixedly connected to the first gear 11, and similarly, the second pipe 3 passes through the rotation center of the second gear 12 and is fixedly connected to the second gear 12. At this time, by the relative rotation of the first gear 11 and the second gear 12, the first pipe 2 and the second pipe 3 can be driven to rotate respectively around the rotation center of the first gear 11 and the rotation center of the second gear 12, so that the upper side tuyere 4 and the lower side tuyere 5 can be driven to rotate, and the air blowing angle of the upper side tuyere 4 and the lower side tuyere 5 can be adjusted.

[0048] It should be noted that, in addition to the first pipe 2 is provided with the first adjusting device 6, the second pipe 3 is provided with the second adjusting device 7, also can only in the first pipe 2 is provided with the first adjusting device 6, or only in the second pipe 3 is provided with the second adjusting device 7, so it is also possible.

[0049] In the embodiment, the first gear 11 and the second gear 12 are connected in engagement, which is simple and compact in structure, easy to operate and implement, and can realize the synchronous adjustment of the upper air nozzle 4 and the lower air nozzle 5, thereby solving the problem of insufficient space for adjusting the lower side of the tab 101 and reducing the difficulty of adjustment.

[0050] In the embodiment, the first gear 11 and the second gear 12 are connected in engagement, which is simple and compact in structure, easy to operate and implement, and can realize the synchronous adjustment of the upper air nozzle 4 and the lower air nozzle 5, thereby solving the problem of insufficient space for adjusting the lower side of the tab 101 and reducing the difficulty of adjustment. Figure 4 and Figure 5 and in combination with Figure 2 and Figure 3 As shown in the drawings, the upper air nozzle 4 is provided with a first clamping portion 41 connected with the first pipeline 2, and the lower air nozzle 5 is also provided with a second clamping portion 41 connected with the second pipeline 3. In specific implementation, the first clamping portion 41 is clamped on the first pipeline 2 by a threaded connection, realizing the connection of the upper air nozzle 4 and the first pipeline 2, and similarly, the second clamping portion 41 is clamped on the second pipeline 3 by a threaded connection, realizing the connection of the lower air nozzle 5 and the second pipeline 3.

[0051] In the embodiment, as preferred, the air speed of the upper air nozzle 4 and the lower air nozzle 5 is 15 m / s to 25 m / s. In this way, the blowing effect of the tab 101 can be ensured, and the tab 101 can also be prevented from being damaged by wind. In specific implementation, the air speed is set to be, for example, 15 m / s, 18 m / s, 20 m / s, 22 m / s or 25 m / s, and can be set according to different versions of the tab 10.

[0052] In addition, in the embodiment, the upper air nozzle 4 and the lower air nozzle 5 are both provided with a guide portion 42 for guiding the flow of air. The guide portion 42 includes an inclined end face at the air outlet 40. The provision of the guide portion 42 is conducive to guiding the flow direction of the air flow and can reduce the influence of external air vortex, thereby ensuring the blowing and flattening effect of the tab 101.

[0053] The tab flattening mechanism of the embodiment uses the upper air nozzle 4 and the lower air nozzle 5 to blow air symmetrically to the tab 101, so that the air pressure received by the two sides of the tab 101 is the same, i.e., the flattening force is the same, thereby keeping the tab 101 centered and preventing it from deforming and bending to the two sides, thereby improving the problem of tab 10 scrap caused by the folding of the tab 101 during winding.

[0054] Embodiment Two

[0055] The embodiment relates to a die cutting device provided with the tab flattening mechanism of embodiment one.

[0056] Still as Figure 1As shown, the die-cutting device is provided with a die-cutting assembly for cutting the polar ears 101 of the delivered polar roll, downstream of the die-cuting assembly, the die-cutting device is further provided with a winding roller 20 for winding the polar sheet 10 after die-cutting, and a pressing roller 30 arranged in parallel with the winding roller 20, the polar sheet 10 to be wound passes through the gap between the winding roller 20 and the pressing roller 30, and is wound on the winding roller 20.

[0057] The mounting frame 1 in the polar ear flattening mechanism described above can be fixed on a rack for mounting the winding roller 20, or can be fixed on a fixed base, such as the ground. The upper air outlet mechanism is provided with the upper air nozzle 4 and the lower air nozzle 5 arranged symmetrically on both sides of the wound polar sheet 10, and close to the winding roller 20.

[0058] The die-cutting device of the embodiment, by adopting the polar ear flattening mechanism of the first embodiment, utilizes the upper air nozzle 4 and the lower air nozzle 5 to symmetrically blow air to the polar ears 101 on the side of the delivered polar sheet 10, so that after die-cutting the polar ears 101, the polar ears 101 can be effectively prevented from being folded to the outside of the two surfaces of the polar sheet 10 when the polar sheet 10 is wound, thereby improving the preparation quality of the polar sheet 10.

[0059] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1.A tab flattening mechanism, characterized in that: it comprises a mounting frame, and an upper air outlet mechanism and a lower air outlet mechanism arranged on the mounting frame; the upper air outlet mechanism and the lower air outlet mechanism are respectively provided with an upper air nozzle and a lower air nozzle, the upper air nozzle and the lower air nozzle are symmetrically arranged on both sides of a tab sheet and are arranged close to a winding roller of the tab sheet, and the upper air nozzle and the lower air nozzle are respectively used for blowing and flattening the tabs on the side of the tab sheet; the upper air nozzle and the lower air nozzle are respectively provided with a guide part for guiding the flow of air. 2.The tab flattening mechanism according to claim 1, characterized in that: the upper air outlet mechanism comprises a first pipeline, one end of the first pipeline is connected with an air source, and the other end of the first pipeline is connected with the upper air nozzle; and / or the lower air outlet mechanism comprises a second pipeline, one end of the second pipeline is connected with an air source, and the other end of the second pipeline is connected with the lower air nozzle. 3.The tab flattening mechanism according to claim 2, characterized in that: the first pipeline is provided with a first adjusting device for adjusting the air volume of the upper air nozzle; and / or the second pipeline is provided with a second adjusting device for adjusting the air volume of the lower air nozzle. 4.The tab flattening mechanism according to claim 3, characterized in that: the first pipeline and / or the second pipeline is made of a stainless steel pipe. 5.The tab flattening mechanism according to claim 3, characterized in that: the upper air nozzle is provided with a first clamping part connected with the first pipeline; and / or the lower air nozzle is provided with a second clamping part connected with the second pipeline. 6.The tab flattening mechanism according to claim 1, characterized in that: the air speed of the upper air nozzle and / or the lower air nozzle is between 15 m / s and 25 m / s. 7.The tab flattening mechanism according to any one of claims 1 to 6, characterized in that: the mounting frame is provided with an adjusting mechanism for adjusting the air outlet angle of the upper air nozzle and / or the lower air nozzle. 8.The tab flattening mechanism according to claim 7, characterized in that: the adjusting mechanism comprises a first gear and a second gear engaged with each other; the upper air outlet mechanism and the lower air outlet mechanism are respectively connected to the first gear and the second gear, and the air outlet angle of the upper air nozzle and the lower air nozzle is adjusted by the relative rotation of the first gear and the second gear. 9.A die cutting device, characterized in that: the die cutting device is provided with the tab flattening mechanism according to any one of claims 1 to 8.

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