Pole piece cutting device

Abstract

The utility model relates to the technical field of lithium electrode pole pieces, in particular to a pole piece cutting device. Comprising a charging barrel and a cutter roller which abuts against the charging barrel and is used for cutting off a pole piece when the pole piece is conveyed; the cutter roller comprises a roller body abutting against the charging barrel, a cutter installed in the roller body and a driving assembly connected with the cutter and used for driving the cutter to stretch out of or retract back into the roller body. According to the pole piece cutting device, due to the arrangement of the charging barrel and the cutter roller, the product quality can be improved while the structure is simplified, and the pole piece cutting device is suitable for industrial application.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium electrode pole pieces, in particular to a pole piece cutting device. Background Art

[0002] During the winding and reception of lithium battery electrodes, the electrodes need to be cut. In the traditional electrode reception and winding structure, it is usually divided into the conveying of the electrodes by the rubber pressing roller and the cutting of the electrodes by the cutter. Both are controlled by independent gas rods. On the one hand, the structure is cumbersome. On the other hand, since the electrodes are still conveyed forward during the cutting process, the cutter will produce saw teeth when cutting the electrodes, thereby reducing the quality of the product and being unsuitable for industrial applications.

[0003] Therefore, it is necessary to propose a technical means to solve the above-mentioned deficiencies. Utility Model Content

[0004] The utility model adopts the following technical solutions:

[0005] A pole piece cutting device includes a barrel and a cutter roller abutting the barrel for cutting the pole piece when conveying the pole piece; wherein the cutter roller includes a roller body abutting the barrel, a cutter installed in the roller body, and a drive component connected to the cutter for driving the cutter to extend or retract from the inside of the roller body.

[0006] Preferably, the driving assembly includes a power unit installed in the roller body, arranged along the length direction of the roller body, and whose power output end reciprocates along the length direction of the roller body, and a transmission unit connected to the power output end of the power unit, which is used to drive the cutter to extend or retract from the inside of the roller body as the power output end of the power unit reciprocates.

[0007] Preferably, the power unit includes a driving cylinder arranged along the length direction of the roller body.

[0008] Preferably, the transmission unit includes a first connecting module installed at the bottom of the cutter, a second connecting module connected to the first connecting module and the power output end of the power unit, and used to drive the first connecting module to move along the length direction of the roller body under the drive of the power output end of the power unit, and a third connecting module connected to the first connecting module, and used to drive the first connecting module upward or downward when the first connecting module moves, so that the cutter connected to the first connecting module extends out or returns to the roller body.

[0009] Preferably, the first connecting module includes clamping plates installed on both sides of the bottom of the cutter for clamping and fixing the cutter.

[0010] Preferably, the second connecting module includes a connecting block and a connecting column; the connecting block is connected to the power output end of the power unit; an avoidance hole is provided at the bottom of the splint; one end of the connecting column is connected to the connecting block, and the other end is installed in the avoidance hole, and when the third connecting module drives the splint upward or downward, the connecting column moves relatively in the avoidance hole.

[0011] Preferably, the third connecting module includes a rotating arm; an arc-shaped abutment groove is provided at the bottom of the clamping plate; one end of the rotating arm is rotatably installed on the top of the arc-shaped abutment groove, and the other end is rotatably connected to the roller body, so that when the clamping plate drives the cutter to extend out of the roller body, the rotating arm abuts against the top of the arc-shaped abutment groove, and when the clamping plate drives the cutter to return to the roller body, the rotating arm abuts against the arc wall of the arc-shaped abutment groove.

[0012] Preferably, a sensor for sensing the position of the cutter is provided at the end of the roller body.

[0013] The pole piece cutting device of the utility model can simplify the structure and improve the quality of the product by arranging a barrel and a cutting roller, and is suitable for industrial application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a brief schematic diagram of a pole piece cutting device of the present invention before pole piece cutting;

[0015] Figure 2 This is a brief schematic diagram of a pole piece cutting device of the present invention after pole piece cutting;

[0016] Figure 3 This is a schematic diagram of the cross-section structure of a pole piece cutting device according to the present invention after the cutter extends out of the roller body;

[0017] Figure 4 This is a schematic diagram of the cross-section structure of a pole piece cutting device after the cutter returns to the roller body in the utility model. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] 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., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] See also Figures 1 to 4 , a pole piece cutting device, including a barrel 10, and a cutting roller 20 abutting against the barrel 10 and used to cut the pole piece when conveying the pole piece; wherein, the cutting roller 20 includes a roller body 201 abutting against the barrel 10, a cutter 202 installed in the roller body 201, and a driving component connected to the cutter 202 and used to drive the cutter 202 to extend or retract from the inside of the roller body 201.

[0022] Specifically, in this embodiment, the pole piece advances under the contact between the barrel 10 and the roller body 201. At this time, the cutter 202 is located in the roller body 201 under the drive of the drive assembly, as shown in Figure 1; when the pole piece needs to be cut, the drive assembly works to drive the cutter 202 to gradually extend out of the roller body 201. During this process, the cutter 202 continues to rotate with the roller body 201 and finally cuts the pole piece, as shown in Figure 1. Figure 2 As shown; during this working process, on the one hand, since the cutter 202 and the drive assembly are integrated into the roller body 201, the overall structure can be effectively simplified; on the other hand, since the cutter 202 is installed in the roller body 201 and rotates with the roller body 201, the cutter 202 always follows the incision when cutting the pole piece, thereby effectively avoiding the generation of incision serrations when cutting the pole piece, thereby greatly improving the quality of the product.

[0023] The pole piece cutting device of the present invention can simplify the structure and improve the quality of the product by arranging the barrel 10 and the cutter roller 20, and is suitable for industrial application.

[0024] In a specific embodiment, the drive assembly includes a power unit installed within the roller body 201 and arranged along the length of the roller body 201, with its power output end reciprocating along the length of the roller body 201; and a transmission unit connected to the power output end of the power unit, configured to drive the cutter 202 to extend or retract from the roller body 201 as the power output end of the power unit reciprocates. In this embodiment, the power unit is arranged within the roller body 201 along its length, thereby fully utilizing the space within the roller body 201 and improving the rationality of the structure. Furthermore, the power unit includes a drive cylinder 203 arranged along the length of the roller body 201. The transmission unit includes a first connecting module mounted on the bottom of the cutter 202, a second connecting module connected to the first connecting module and the power output end of the power unit and configured to drive the first connecting module to move along the length of the roller body 201 under the power output end of the power unit, and a third connecting module connected to the first connecting module and configured to drive the first connecting module upward or downward when the first connecting module moves, thereby extending or returning the cutter 202 connected to the first connecting module into the roller body 201. The first connecting module includes clamping plates 204 mounted on both sides of the bottom of the cutter 202 and configured to clamp and secure the cutter 202. The second connecting module includes a connecting block and a connecting column (not shown in the figure); the connecting block is connected to the power output end of the power unit; a avoidance hole is provided at the bottom of the clamping plate 204; one end of the connecting column is connected to the connecting block, and the other end is installed in the avoidance hole. When the third connecting module drives the clamping plate 204 upward or downward, the connecting column moves relatively in the avoidance hole. Specifically, during operation, the power output end of the power unit drives the connecting block to move, which in turn drives the connecting column to move, thereby driving the cutter 202 to move through the clamping plate 204. At this time, the third connecting module drives the clamping plate 204 upward so that the cutter 202 extends out of the roller body 201. Since the connecting column can move relatively in the avoidance hole, it can effectively ensure that the connection block drives the clamping plate 204 to move along the length direction of the roller body 201 and the third connecting component drives the clamping plate 204 upward to work in a relatively coordinated manner, avoiding structural interference. The third connecting module includes a rotating arm 205; an arc-shaped abutment groove is provided at the bottom of the clamping plate 204; one end of the rotating arm 205 is rotatably installed on the top of the arc-shaped abutment groove, and the other end is rotatably connected to the roller body 201, so that when the clamping plate 204 drives the cutter 202 to extend out of the roller body 201, the rotating arm 205 abuts against the top of the arc-shaped abutment groove, and when the clamping plate 204 drives the cutter 202 to return to the roller body 201, the rotating arm 205 abuts against the arc wall of the arc-shaped abutment groove.Specifically, in this embodiment, when the cutter 202 has not extended out of the roller body 201, the rotating arm 205 is in contact with the arc wall of the arc-shaped abutment groove and attached to the arc wall of the arc-shaped abutment groove; when the cutter 202 needs to extend out of the roller body 201, at this time, the power unit, that is, the driving cylinder 203 drives the clamping plate 204 to move horizontally along the length direction of the roller body 201 through the second connecting module, so that during the movement of the clamping plate 204, the rotating arm 205 gradually separates from the arc wall of the arc-shaped abutment groove and abuts against the top of the arc-shaped abutment groove, that is, the rotating arm 205 is now in an inclined state of abutting and attaching to the arc wall, and gradually rotates to a vertical state of abutting against the top of the arc-shaped abutment groove, so that the rotating arm 205 drives the clamping plate 204 upward when rotating, so as to extend the cutter 202 out of the roller body 201.

[0025] In one specific embodiment, a sensor (not shown) is provided at the end of the roller body 201 for sensing the position of the cutter 202. In this embodiment, the sensor is used to monitor the rotational position of the cutter 202 as it rotates with the roller body 201. This allows the cutter 202 to extend from the roller body 201 when the roller body 201 rotates to a predetermined position, and to return to the roller body 201 when the roller body 201 rotates to a predetermined position. This effectively utilizes the cutter 202 to cut the electrode sheet while preventing the cutter 202 from extending outside the roller body 201 and damaging the barrel 10 abutting against the roller body 201. Specifically, the rotational position of the cutter 202 within the roller body 201 can be determined based on its relative position at the end of the roller body 201 as sensed by the sensor, as well as the relative angle between the sensor and the cutter 202.

[0026] In summary, the electrode cutting device described in the present invention, when in operation, the cutter 202 advances under contact with the barrel 10 and the cutter roller 20. However, when the electrode needs to be cut, the driving cylinder 203 drives the connecting block to move horizontally, and then drives the clamping plate 204 to move horizontally through the connecting column, so that the cutter 202 moves horizontally. When the clamping plate 204 moves horizontally, due to the setting of the rotating arm 205, the rotating arm 205 gradually separates from the side of the arc-shaped abutment groove at the bottom of the clamping plate 204, and drives the clamping plate 204 upward during the rotation of the rotating arm 205, so that the cutter 202 extends, thereby cutting the electrode. When the cutter 202 needs to return to the roller body 201, the reverse operation is sufficient.

[0027] The pole piece cutting device of the present invention can simplify the structure and improve the quality of the product by arranging the barrel 10 and the cutter roller 20, and is suitable for industrial application.

[0028] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A pole piece cutting device, characterized in that: It includes a barrel and a cutting roller abutting against the barrel for cutting the pole piece when conveying the pole piece; wherein the cutting roller includes a roller body abutting against the barrel, a cutter installed in the roller body, and a driving component connected to the cutter for driving the cutter to extend or retract from the inside of the roller body.

2. A pole piece cutting device according to claim 1, characterized in that: The driving assembly includes a power unit installed in the roller body, arranged along the length direction of the roller body, and whose power output end reciprocates along the length direction of the roller body, and a transmission unit connected to the power output end of the power unit and used to drive the cutter to extend or retract from the inside of the roller body as the power output end of the power unit reciprocates.

3. A pole piece cutting device according to claim 2, characterized in that: The power unit comprises a driving cylinder arranged along the length direction of the roller body.

4. The electrode cutting device according to claim 2, characterized in that: The transmission unit includes a first connecting module installed at the bottom of the cutter, a second connecting module connected to the first connecting module and the power output end of the power unit and used to drive the first connecting module to move along the length direction of the roller body under the drive of the power output end of the power unit, and a third connecting module connected to the first connecting module and used to drive the first connecting module to move upward or downward when the first connecting module moves, so that the cutter connected to the first connecting module extends out or returns to the roller body.

5. A pole piece cutting device according to claim 4, characterized in that: The first connection module includes clamping plates installed on both sides of the bottom of the cutter and used for clamping and fixing the cutter.

6. A pole piece cutting device according to claim 5, characterized in that: The second connecting module includes a connecting block and a connecting column; the connecting block is connected to the power output end of the power unit; an avoidance hole is provided at the bottom of the clamp; one end of the connecting column is connected to the connecting block, and the other end is installed in the avoidance hole, and when the third connecting module drives the clamp to move upward or downward, the connecting column moves relatively in the avoidance hole.

7. The electrode cutting device according to claim 5, characterized in that: The third connecting module includes a rotating arm; an arc-shaped abutment groove is provided at the bottom of the clamping plate; one end of the rotating arm is rotatably installed on the top of the arc-shaped abutment groove, and the other end is rotatably connected to the roller body, so that when the clamping plate drives the cutter to extend out of the roller body, the rotating arm abuts against the top of the arc-shaped abutment groove, and when the clamping plate drives the cutter to return to the roller body, the rotating arm abuts against the arc wall of the arc-shaped abutment groove.

8. The pole piece cutting device according to claim 1, characterized in that: A sensor for sensing the position of the cutter is provided at the end of the roller body.

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