Pole piece stripping device and die-cutting machine

Abstract

The utility model relates to a pole piece stripping device and a die-cutting machine, the pole piece stripping device comprises a stripping piece and a fixing assembly, the stripping piece is used for applying acting force to a pole piece to separate the pole piece from a conveying belt, and the fixing assembly comprises a rotating rod which is rotationally arranged; the stripping piece is arranged on the rotating rod and rotates along with the rotating rod; the rotating rod is provided with at least one section, a central shaft of the rotating rod is taken as an end point, rays are formed along the radius direction of the rotating rod, and a first ray cluster is formed; at least two rays exist in the first ray cluster, and the distances from the intersection points of the rays and the edge of the stripping piece to the rotating rod shaft are unequal; in the using process, the stripping piece rotates along with the rotating rod and applies acting force to the pole piece adhered to the surface of the conveying belt, so that the pole piece is stripped, and the situation that the pole piece enters the die cutting stage again is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electrode die-cutting, specifically, it relates to an electrode peeling device and a die-cutting machine. Background Technology

[0002] After slurry coating, drying, and rolling, the battery electrodes form a composite layered structure with a coating and current collector. To match batteries with different structures, the electrode tabs need further cutting. Currently, in existing technology, die-cutting machines are used to die-cut the battery electrodes.

[0003] For example, a die-cutting machine includes a frame with legs on one side, allowing it to suspend itself. Conveyor rollers are positioned on opposite sides of the frame, and a plastic conveyor belt is mounted on these rollers. The conveyor belt surrounds the frame and moves under the action of the rollers. The side of the frame furthest from the legs is defined as the top, and the conveyor belt is positioned on the top side of the frame, flush with it. Along the conveying direction, the top of the frame has a die-cutting blade and a suction cup for picking up electrode sheets. During die-cutting, the electrode sheet is placed on top of the conveyor belt, and it moves with the belt to the position of the die-cutting blade for die-cutting. The die-cut electrode sheet continues to move with the conveyor belt to the suction cup for pickup.

[0004] However, during use, it was found that some electrodes adhered to the surface of the conveyor belt under the effect of electrostatic adsorption and entered the next die-cutting operation with the conveyor belt, affecting the die-cutting efficiency and quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electrode peeling device and a die-cutting machine.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] On the one hand, this application proposes an electrode stripping device,

[0008] An electrode stripping device includes a stripping component for applying force to the electrode to separate the electrode from a conveyor belt and a fixing assembly. The fixing assembly includes a rotating rod that is rotatably disposed. The stripping component is disposed on the rotating rod and rotates with the rotating rod. The rotating rod has at least one cross-section with a central axis as the endpoint, forming rays along the radial direction of the rotating rod, constituting a first ray cluster. The first ray cluster contains at least two rays, and the distance from the intersection of the rays with the edge of the stripping component to the axis of the rotating rod is unequal.

[0009] Preferably, the rays formed by the same radius of the rotating rod form a second ray cluster along the length of the rotating rod; the second ray cluster contains at least two rays with unequal line segment lengths between their intersection with the edge of the peeling piece and their intersection with the surface of the rotating rod.

[0010] Preferably, there is at least one diameter of the rotating rod; on one side of the diameter of the rotating rod, the peeling member forms a continuous curved protrusion; on the other side, the distance between the intersection of the peeling member and the ray and the ray endpoint is less than the distance on the protrusion side.

[0011] Preferably, there are multiple peeling members, and the multiple peeling members are spaced apart.

[0012] Preferably, the peeling member is slidably disposed relative to the rotating rod.

[0013] Preferably, the fixing assembly further includes a sleeve for mounting the connecting rod, the rod being rotatably connected to the sleeve, and a locking element for mounting the sleeve is provided at the end of the sleeve away from the rod.

[0014] On the other hand, this application provides a die-cutting machine, the specific solution of which is as follows.

[0015] A die-cutting machine includes a frame, a conveyor belt surrounding the outside of the frame, a drive roller for driving the conveyor belt, and an electrode peeling device. The frame has a die-cutting station, an adsorption station for adsorbing and picking up electrodes, and a peeling station for peeling off the adsorbed electrodes. The die-cutting station, adsorption station, and peeling station are arranged sequentially along the conveyor belt conveying direction. The electrode peeling device is located at the peeling station. During the rotation of the peeling device, the peeling device abuts against or separates from the conveyor belt.

[0016] Preferably, the conveyor belt has a corner formed between the adsorption station and the peeling station, or the corner is located at the peeling station.

[0017] Preferably, the rotating rod is connected to one of its driving rollers via a driving belt.

[0018] Preferably, it also includes an electrode collection box, which is set up corresponding to the stripping station.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0020] By setting up a peeling component, during use, the longest part of the peeling component comes into contact with the conveyor belt. Through the rotation of the peeling component, a force is intermittently applied to the electrode sheet adsorbed on the surface of the conveyor belt, thus peeling off the electrode sheet. This setting effectively reduces the occurrence of the electrode sheet re-entering the die-cutting process with the rotating conveyor belt, thereby effectively improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an electrode stripping device in Embodiment 1;

[0022] Figure 2 This is a schematic diagram of the overall structure of the electrode stripping device described in Embodiment 2;

[0023] Figure 3 This is a schematic diagram of the overall structure of another electrode stripping device in Example 2;

[0024] Figure 4 This is a schematic diagram of the overall structure of another electrode stripping device in Example 2;

[0025] Figure 5 This is a schematic diagram of the overall structure of a die-cutting machine in Application Example 1.

[0026] In the diagram: 1. Fixing component; 101. Sleeve; 102. Locking component; 103. Rotating rod; 2. Peeling component; 3. Conveyor belt; 4. Frame; 5. Support leg; 6. Support roller; 7. Drive roller; 8. Die-cutting station; 9. Adsorption station; 10. Die-cutting knife; 11. Suction cup; 12. Peeling station. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] An electrode stripping device, as shown in the reference Figure 1The device includes a fixing component 1, which includes a sleeve 101. A rotating rod 103 passes through one end of the sleeve 101 and is rotatably mounted relative to the sleeve 101. A locking element 102 is provided at the end of the sleeve 101 away from the rotating rod 103. In this application, the locking element 102 includes a flange provided on the sleeve 101, and the flange has a threaded hole. The sleeve 101 can be installed in the desired position by the cooperation of a screw and the flange with the threaded hole. One end of the rotating rod 103 is connected to a drive motor (not shown in the figure) and rotates under the action of the drive motor. In other embodiments, the locking element 102 can also be a buckle, chain, or other connecting component; the rotating rod 103 can also rotate under the drive of other driving methods such as belts or gear chains.

[0033] Reference Figure 1 A peeling element 2 is fixedly mounted on the rotating rod 103. In this embodiment, the peeling element 2 is an eccentric roller, and it is integrally formed with the rotating rod 103. In other embodiments, the peeling element 2 can also be a square roller, a triangular roller, or other roller with edges. It can also be connected to the rotating rod 103 by means of threaded connection, etc., and the relative position of the peeling element 2 and the rotating rod 103 is fixed. Before use, the rotating rod 103 and the peeling element 2 are placed on the side of the conveyor belt 3 where the electrode sheet is placed, and the position between the rotating rod 103 and the conveyor belt 3 is adjusted so that the peeling element 2 has two states: pressing against the conveyor belt 3 and separating from it, as it rotates with the rotating rod 103.

[0034] When the electrode sheet adhered to the conveyor belt 3 moves to the position of the peeling member 2, the rotating peeling member 2 periodically presses against and separates from the conveyor belt 3. The direction of movement of the peeling member 2 on the side closest to the conveyor belt 3 is controlled to be opposite to the conveying direction of the conveyor belt 3. During the periodic pressing process, a certain force is exerted on the attached electrode sheet. When the force is greater than the adsorption force, the adsorbed electrode sheet can be removed, effectively reducing the occurrence of the electrode sheet entering the next die-cutting operation with the conveyor belt 3 and mitigating adverse effects. Furthermore, to further increase the force exerted by the peeling member 2 on the electrode sheet and reduce the electrode sheet adhesion rate, a rubber layer can be further provided on the surface of the peeling member 2.

[0035] Example 2

[0036] An electrode stripping device, as shown in the reference Figure 2 The difference from Embodiment 1 lies in the structure and shape of the peeling member 2. A diameter exists on the rotating rod 103. The longest distance between the peeling member 2 and the rotating rod axis is always located on one side of the diameter, while the shortest distance is always located on the other side. The distance between the peeling member 2 and the rotating rod axis on the longer distance side is greater than the distance on the shorter distance side. A ray is formed along the line containing the longest distance, with the rotating rod axis as the endpoint, resulting in a continuous curved surface.

[0037] In other embodiments, refer to Figure 3 and Figure 4 The peeling element 2 can also be configured as multiple spaced cams, such as... Figure 4 As shown, by setting it up in this way, the contact points are misaligned in time and space, forming a continuous twisting effect, which further improves the peeling effect of the electrode sheet.

[0038] To further improve the applicability of the device, locking rings and locking bolts are provided at both ends of the cam. During use, the locking bolts are loosened, and the cam is slid along the length of the rotating rod 103 until it corresponds to the pole piece, and then locked. Depending on the actual use, the longest diameter between adjacent cams can also be set at a certain angle.

[0039] Application Example 1

[0040] A die-cutting machine, as described above Figure 5 The system includes a frame 4, a support leg 5 fixedly disposed on one side of the frame 4, a support roller 6 and a drive roller 7 disposed on the two side walls adjacent to the support leg 5, a PET conveyor belt 3 surrounding the outside of the frame 4, and the electrode peeling device described in Embodiment 2. The support roller 6 is disposed at the end of the frame 4 near the support leg 5, and the drive roller 7 is disposed at the end of the frame 4 away from the support leg 5. In this embodiment, the PET conveyor belt 3 is used as an example; in other embodiments, other conveyor belts 3 that have an adsorption effect on the electrode sheets can also be used. The conveyor belt 3 is disposed around the drive roller 7 and the support roller 6, and moves around the frame 4 under the action of the drive roller 7.

[0041] Reference Figure 5 The frame 4 is planar on the side away from the support legs 5, and a die-cutting station 8 and an adsorption station 9 are formed along the side wall of the planar frame 4. The die-cutting station 8 and the adsorption station 9 are arranged sequentially along the conveyor belt 3. A die-cutting blade 10 is slidably mounted on the top of the frame 4 at the die-cutting station 8. During the sliding process, the die-cutting blade 10 abuts against the conveyor belt 3 and cuts the electrode sheets on the conveyor belt 3 into products of the corresponding specifications. A suction cup 11 is slidably mounted on the top of the frame 4 at the adsorption station 9 along a vertical plane. The cut products are moved and collected by the suction cup 11.

[0042] Reference Figure 5 To facilitate electrode die-cutting, the drive roller 7 is flush with the frame 4 on the side away from the support 5, and the conveyor belt 3 is fitted against the side wall of the frame 4 on the side away from the support 5. When die-cutting the electrode, the operator needs to place the electrode on the conveyor belt 3 located on the planar frame 4, and then start the conveyor belt 3. The conveyor belt 3 drives the electrode to the die-cutting station 8 for die-cutting and the adsorption station 9 for adsorption and removal.

[0043] Reference Figure 5After the conveyor belt 3 passes through the adsorption station 9, it is bent by the drive roller 7. After the conveyor belt 3 is bent, a peeling station 12 is formed in the area near the frame 4 near the bending part. The electrode peeling device can be set in the peeling station 12 through the threaded engagement of the sleeve 101 flange, the screw and the threaded hole of the frame 4. After being set in the peeling station 12, the conveyor belt 3 passes through the gap between the frame 4 and the electrode peeling device.

[0044] Reference Figure 5 The electrode sheets that remain adsorbed on the conveyor belt 3 after passing through the adsorption station 9 have different effects on the conveyor belt 3 and the electrode sheets when passing through the bending section. This has a certain disruptive effect on the adsorption effect, facilitating the peeling of the electrode sheets. After passing through the bending section, the peeling component 2 comes into contact with the conveyor belt 3 or the electrode sheet, and during rotation, it applies a force to the electrode sheet in the opposite direction of the conveyor belt 3, causing the electrode sheet to separate from the conveyor belt 3. This effectively reduces the occurrence of the electrode sheet re-entering the die-cutting operation with the conveyor belt 3. In addition, an electrode sheet collection box is provided directly below the peeling station 12 for convenient storage of the peeled electrode sheets.

[0045] In other applications, the electrode stripping device described in Example 1 can also be used.

[0046] Application Example 2

[0047] A die-cutting machine differs from Application Example 1 in that both ends of the drive roller 7 near the peeling station 12 are equipped with drive roller 7 and cooperating belts, which drive the rotating rod 103. With this configuration, since the drive roller 7 and rotating rod 103 are respectively located at both ends of the conveyor belt 3 during transmission, no additional control of the rotating rod 103 is required during rotation. This allows the movement direction of the peeling part 2 in contact with the conveyor belt 3 to be opposite to the movement direction of the electrode sheet, making the process convenient and fast.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electrode stripping device, characterized in that, The device includes a stripping element (2) for applying force to the electrode to separate the electrode from the conveyor belt (3) and a fixing assembly (1). The fixing assembly (1) includes a rotating rod (103) that is rotatably disposed. The stripping element (2) is disposed on the rotating rod (103) and rotates with the rotating rod (103). There is at least one cross section along the length of the rotating rod (103). A ray is formed in the cross section with the central axis of the rotating rod (103) as the endpoint, forming a first ray cluster. There are at least two rays in the first ray cluster. The distance between the intersection of the rays and the edge of the stripping element (2) and the axis of the rotating rod (103) is not equal.

2. The electrode stripping device according to claim 1, characterized in that, Along the length of the rotating rod (103), rays formed with the same radius on different cross sections form a second ray cluster; in the second ray cluster, there are at least two rays whose line segment lengths between the intersection point with the edge of the peeling piece (2) and the intersection point with the surface of the rotating rod (103) are not equal.

3. The electrode stripping device according to claim 2, characterized in that, There is at least one diameter of a rotating rod (103); on one side of the diameter of the rotating rod (103), the peeling member (2) forms a curved protrusion; on the other side, the distance between the intersection of the peeling member (2) and the ray and the ray endpoint is less than the distance on the protrusion side.

4. The electrode stripping device according to any one of claims 1-3, characterized in that, The peeling member (2) is configured as a plurality of such members, and the plurality of peeling members (2) are spaced apart.

5. The electrode stripping device according to claim 4, characterized in that, The peeling member (2) is slidably positioned relative to the rotating rod (103).

6. The electrode stripping device according to claim 1, characterized in that, The fixing component (1) further includes a sleeve (101) for mounting the connecting rod (103), the rod (103) being rotatably connected to the sleeve (101), and a locking element (102) for mounting the sleeve (101) is provided at one end of the sleeve (101) away from the rod (103).

7. A die-cutting machine, characterized in that, The device includes a frame (4), a conveyor belt (3) surrounding the outside of the frame (4), a drive roller (7) for driving the conveyor belt (3) for transmission, and an electrode stripping device according to any one of claims 1-6. The frame (4) is provided with a die-cutting station (8) for die-cutting, an adsorption station (9) for adsorbing and picking up the electrode, and a stripping station (12) for stripping the adsorbed electrode. The die-cutting station (8), the adsorption station (9), and the stripping station (12) are arranged sequentially along the conveying direction of the conveyor belt (3), and the electrode stripping device is located at the position of the stripping station (12). During the rotation of the stripping member (2), the stripping member (2) abuts against or separates from the conveyor belt (3).

8. The die-cutting machine according to claim 7, characterized in that, The conveyor belt (3) has a corner formed between the adsorption station (9) and the peeling station (12), or the corner is set at the peeling station (12).

9. The die-cutting machine according to claim 7, characterized in that, The rotating rod (103) is connected to one of its driving rollers (7) via a driving belt.

10. The die-cutting machine according to claim 7, characterized in that, It also includes an electrode collection box, which is set up in accordance with the stripping station (12).

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