Slitting device for battery negative pole piece production

Abstract

The utility model discloses a slitting device for battery negative pole piece production, relates to the technical field of battery negative pole piece processing equipment, and aims to solve the problems that the width of a battery negative pole piece is adjusted, powder is generated during slitting, and adverse effects are generated on a battery. The rack is further provided with a slitting roller for slitting the pole piece, the slitting roller comprises a roller body and a plurality of groups of circular knives, the roller body is driven by a slitting motor, the circular knives are connected to the roller body in a sliding manner, bolts for limiting are arranged between the circular knives and the roller body, and under the limiting of the bolts, the circular knives and the roller body are connected in a sliding manner. The positions of the circular cutters on the roller body can be adjusted, the slitting roller is of a split type structure, the roller body is provided with through grooves, the circular cutters are installed on the roller body through bolts, the bolts slide in the through grooves, the distance between the adjacent circular cutters is adjusted, and therefore the width of the slit battery negative pole piece is adjusted, and the slitting roller is suitable for batteries of different specifications and models.

Description

Technical Field

[0001] The utility model relates to the technical field of battery negative electrode sheet processing equipment, and particularly relates to a slitting device for producing battery negative electrode sheets. Background Art

[0002] When processing battery electrode sheets, it is necessary to slit the battery electrode sheets according to the battery models to be produced, and slit out battery negative electrode sheets with widths that meet the electrical model requirements; since there are multiple battery models and the required electrode sheet widths are also different, when slitting electrode sheets of different widths, it is necessary to replace the slitting roller, and the replacement of the slitting roller is time-consuming and laborious, affecting the slitting processing of battery negative electrode sheets; when slitting battery negative electrode sheets, powder will fall off at the corresponding slitting positions of the electrode sheets, thus forming dust. If the dust is not managed, it will affect the normal use of the battery.

[0003] Therefore, this application provides a slitting device for producing battery negative electrode sheets to meet the requirements. Summary of the Utility Model

[0004] The purpose of this application is to provide a slitting device for producing battery negative electrode sheets, aiming to solve the problems of variable adjustment of the width of battery negative electrode sheets and the generation of powder during slitting, which has an adverse effect on the battery.

[0005] To achieve the above purpose, this application provides the following technical solution: A slitting device for producing battery negative electrode sheets, including a frame and an electrode sheet. A conveying roller is provided on the frame, and under the conveyance of the conveying roller, the electrode sheet can be conveyed.

[0006] A slitting roller for slitting the electrode sheet is further provided on the frame. The slitting roller includes a roller body and circular knives. The roller body is driven by a slitting motor. There are multiple groups of circular knives, and they are slidably connected to the roller body. A bolt for limiting is provided between the circular knives and the roller body. Under the limitation of the bolt, the position of the circular knife on the roller body can be adjusted. The slitting roller adopts a split structure. A through groove is opened on the roller body, and the circular knife is installed on the roller body through a bolt. The bolt slides in the through groove to adjust the distance between adjacent circular knives, thereby adjusting the width of the slit battery negative electrode sheet to adapt to different specifications and models of batteries.

[0007] Preferably, the roller body is a cylindrical shell that is transparent at both ends. End caps are respectively provided at the left and right ends of the roller body. Connecting blocks for connecting with the end caps are also provided on the roller body. The end caps are connected to the connecting blocks through bolts.

[0008] Preferably, through holes are opened on the end caps, and shaft tubes are welded in the through holes. The shaft tubes connect the inside of the roller body with the outside. The two shaft tubes are rotatably connected to the frame through bearing seats.

[0009] Preferably, through grooves are formed in the roller body, and the circular knife is connected to the roller body through bolts and the through grooves. Through the cooperation of the air duct and the shaft pipe, the inside of the roller body can be communicated with the outside world. Under the action of the negative pressure device, negative pressure is formed at the through grooves. During the process of cutting the negative electrode tab of the battery by the circular knife, the powder is sucked and collected to avoid affecting the cutting quality of the negative electrode tab of the battery, thereby affecting the quality of the battery.

[0010] Preferably, one group of the shaft pipes is connected to the output end of the slitting motor through a coupling; the other group of the shaft pipes is connected to one end of the air duct through a rotary pipe joint, and the other end of the air duct is connected with a negative pressure device. Under the action of the negative pressure device, negative pressure is formed at the through grooves.

[0011] In summary, the technical effects and advantages of the present utility model are as follows:

[0012] In the present utility model, the slitting roller adopts a split structure. Through grooves are formed in the roller body, and the circular knife is installed on the roller body through bolts. The bolts slide in the through grooves to adjust the distance between adjacent circular knives, thereby adjusting the width of the cut negative electrode tab of the battery to adapt to batteries of different specifications and models.

[0013] In the present utility model, through the cooperation of the air duct and the shaft pipe, the inside of the roller body can be communicated with the outside world. Under the action of the negative pressure device, negative pressure is formed at the through grooves. During the process of cutting the negative electrode tab of the battery by the circular knife, the powder is sucked and collected to avoid affecting the cutting quality of the negative electrode tab of the battery, thereby affecting the quality of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is an exploded view of the present utility model;

[0017] Figure 3 is an exploded view of the slitting roller of the present utility model;

[0018] Figure 4 is a cross-sectional view of the slitting roller of the present utility model.

[0019] In the figure: 1, frame; 2, tab; 3, slitting motor; 4, air duct; 5, slitting roller; 6, rotary pipe joint;

[0020] 51. Roller body; 52. End cover; 53. Connecting block; 54. Through groove; 55. Circular knife; 56. Shaft tube. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Example 1: Refer to Figures 1-4 A slitting device for producing battery negative electrode sheets as shown, including a frame 1 and a sheet 2. A conveying roller is provided on the frame 1, and under the conveyance of the conveying roller, the sheet 2 can be conveyed.

[0023] The frame 1 is also provided with a slitting roller 5 for slitting the sheet 2. There are two groups of slitting rollers 5, and the two groups of slitting rollers 5 are on the same vertical plane on the frame 1. The slitting roller 5 includes a roller body 51 and a circular knife 55. The roller body 51 is driven by a slitting motor 3, and the slitting motor 3 is installed on the frame 1 through a motor seat. There are multiple groups of circular knives 55, and they are slidably connected to the roller body 51. A bolt for limiting is provided between the circular knife 55 and the roller body 51. Under the limitation of the bolt, the position of the circular knife 55 on the roller body 51 can be adjusted.

[0024] The roller body 51 is a cylindrical shell with both ends transparent. End covers 52 are respectively provided at the left and right ends of the roller body 51. The roller body 51 is also provided with connecting blocks 53 for connecting with the end covers 52. There are four groups of connecting blocks 53, and they are arranged in a circular array around the axis of the roller body 51. The end cover 52 is connected to the connecting block 53 through bolts.

[0025] A through hole is opened on the end cover 52, and a shaft tube 56 is welded in the through hole. The shaft tube 56 connects the inside of the roller body 51 with the outside. The two shaft tubes 56 are rotatably connected to the frame 1 through bearing seats.

[0026] A through groove 54 is opened on the roller body 51. The through groove 54 connects the inside of the roller body 51 with the outside. The circular knife 55 is connected to the roller body 51 through bolts and the through groove 54. The bolts slide in the through groove 54, and at the same time, the positional relationship of the circular knife 55 on the roller body 51 is adjusted.

[0027] One group of the shaft tubes 56 is connected to the output end of the slitting motor 3 through a coupling; the other group of the shaft tubes 56 is connected to one end of the air duct 4 through a rotary union 6, and the other end of the air duct 4 is connected with a negative pressure device. The negative pressure device adopts a vacuum cleaner. Under the action of the negative pressure device, a negative pressure is formed at the through groove 54 to collect the dust generated during slitting.

[0028] The working principle of this utility model: During use, according to the width of the electrode sheet 2 required by the battery, adjust the distance between adjacent circular knives 55. Rotate the bolt on the circular knife 55 counterclockwise to loosen it from the nut in the roller body 51, release the limit between the circular knife 55 and the roller body 51, and slide the circular knife 55 to adjust the distance between adjacent circular knives 55. At the same time, the bolt slides in the through groove 54. After the adjustment is completed, rotate the bolt on the circular knife 55 clockwise. Under the action of the friction force between the nut in the roller body 51 and the roller body 51, the nut will not rotate with the bolt, thereby limiting the circular knife 55 on the roller body 51 to complete the distance between adjacent circular knives 55.

[0029] Start the slitting motor 3 to work, drive the slitting roller 5 to rotate on the frame 1, and control the negative pressure device to work. Through the air duct 4 and the shaft tube 56, a negative pressure is formed in the roller body 51, and at the same time, a negative pressure is formed at the through groove 54. Feed the electrode sheet 2 to be slit between the two groups of slitting rollers 5. The slitting rollers 5 slit the electrode sheet 2. The dust generated during slitting enters the slitting rollers 5 through the through groove 54, and is collected by the negative pressure device through the shaft tube 56 and the air duct 4, avoiding affecting the quality of the electrode sheet 2 and thus affecting the quality of the battery.

[0030] The electromechanical connection involved in this utility model is a common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of experiments, belonging to common general knowledge.

[0031] The components not described in detail in this article are prior art.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A slitting device for the production of battery negative electrode plates, comprising a frame (1) and a plate (2). A conveying roller is provided on the frame (1), and under the conveyance of the conveying roller, the plate (2) can be conveyed. It is characterized in that: A slitting roller (5) for slitting the plate (2) is further provided on the frame (1). The slitting roller (5) comprises a roller body (51) and circular knives (55). The roller body (51) is driven by a slitting motor (3). A plurality of groups of the circular knives (55) are provided and are slidably connected to the roller body (51). A bolt for limiting is provided between the circular knives (55) and the roller body (51). Under the limitation of the bolt, the position of the circular knives (55) on the roller body (51) can be adjusted.

2. The slitting device for producing a battery negative electrode tab according to claim 1, characterized in that: The roller body (51) is a cylindrical shell with both ends being transparent. End covers (52) are respectively provided at the left and right ends of the roller body (51). Connecting blocks (53) for connecting with the end covers (52) are further provided on the roller body (51). The end covers (52) are connected to the connecting blocks (53) by bolts.

3. The slitting device for producing a battery negative electrode tab according to claim 2, characterized in that: Through holes are formed in the end covers (52), and shaft tubes (56) are welded in the through holes. The shaft tubes (56) communicate the inside of the roller body (51) with the outside. The two groups of shaft tubes (56) are rotatably connected to the frame (1) through bearing seats.

4. The slitting device for producing a battery negative electrode sheet according to claim 3, wherein: A through groove (54) is formed in the roller body (51). The circular knives (55) are connected to the roller body (51) through bolts and the through groove (54).

5. A slitting device for producing a battery negative electrode tab according to claim 4, characterized in that: One group of the shaft tubes (56) is connected to the output end of the slitting motor (3) through a coupling; the other group of the shaft tubes (56) is connected to one end of an air duct (4) through a rotary pipe joint (6). The other end of the air duct (4) is connected to a negative pressure device. Under the action of the negative pressure device, a negative pressure is formed at the through groove (54).

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