Positive pole piece discharging and flattening mechanism

Abstract

The utility model relates to a positive pole piece discharge flattening mechanism which comprises a left side plate and a right side plate, a pair of supporting rollers with the same center height is rotationally installed between the inner wall of the left side plate and the inner wall of the right side plate, a pole piece is placed on the pair of supporting rollers after being discharged, and flattening assemblies are arranged on the inner wall of the left side plate and the inner wall of the right side plate respectively. The flattening assembly comprises a U-shaped frame which can be installed in a deflection adjusting mode relative to the pole piece, an upper steel roller is rotationally arranged on the upper side edge of the U-shaped frame, a lower rubber roller is rotationally arranged on the lower side edge of the U-shaped frame, the gap between the lowest point of the upper steel roller and the highest point of the supporting roller is equal to the thickness of the pole piece, and the lower rubber roller ascends to abut against the bottom face of the pole piece when the pole piece is flattened. According to the utility model, the upper steel roller and the lower rubber roller which are inclined relative to the moving direction of the pole piece are arranged on the discharging moving route of the pole piece, and wrinkles on the edges of the two sides of the pole piece can be flattened under the combined action of the upper steel roller and the lower rubber roller, so that the tension of the pole piece can be ensured, and the condition of piece breakage during subsequent winding can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a positive electrode sheet feeding and flattening mechanism. Background Technology

[0002] A positive electrode sheet is an electrode sheet with a high potential that contains an active material that undergoes a reduction reaction during discharge. In the manufacturing process of a positive electrode sheet, after coating and drying, the electrode sheet needs to be rolled to enhance the adhesion strength between the active material and the foil.

[0003] After being rolled, the positive electrode sheet exits the roller press and enters the subsequent winding process. However, there are often some wrinkles on both sides of the electrode sheet after exiting the press, which makes the edge flatness of the electrode sheet unsatisfactory and has a significant impact on the tension of the electrode sheet. This can easily lead to breakage during subsequent winding, affecting the quality of the electrode sheet. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a positive electrode sheet discharge and flattening mechanism that can effectively eliminate the phenomenon of edge wrinkles of the electrode sheet and prevent the breakage of the sheet during winding.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a positive electrode sheet feeding and flattening mechanism, including a frame assembly, the frame assembly having a left side plate and a right side plate spaced apart, a pair of support rollers with the same center height rotatably installed between the inner walls of the left side plate and the inner walls of the right side plate, the electrode sheet after being rolled out from the discharge end of the roller press and placed on the pair of support rollers, a flattening component located between the pair of support rollers is respectively provided at the inner walls of the left side plate and the inner walls of the right side plate, the flattening component includes a U-shaped frame that can be installed at an angle relative to the electrode sheet, an upper steel roller is rotatably arranged on the upper side of the U-shaped frame, a lower rubber roller is rotatably arranged on the lower side of the U-shaped frame, the gap between the lowest point of the upper steel roller and the highest point of the support roller is equal to the thickness of the electrode sheet, the lower rubber roller rises and abuts against the bottom surface of the electrode sheet when the electrode sheet is flattened.

[0006] A channel steel beam is fixed between the inner walls of the left and right sides of the plate. The channel steel beam is located above the center distance between a pair of support rollers. The web of the channel steel beam has four evenly distributed oblong holes. The U-shaped frame is fixed to the channel steel beam by fixing bolts passing through the oblong holes.

[0007] A base plate is fixed on the lower side of the U-shaped frame, and a lifting plate is provided above the base plate. A lifting cylinder with a piston rod connected to the bottom surface of the lifting plate is installed on the base plate. Supports are fixed on both sides of the upper surface of the lifting plate, and the lower rubber roller is rotatably installed between the supports.

[0008] The lifting plate is fixed with guide rods at both ends, and guide sleeves are installed at both ends of the base plate. The lower ends of the guide rods slide in conjunction with the guide sleeves.

[0009] The frame assembly has a base, with the lower ends of the left and right side plates fixed to the base on both sides, and a support rod fixed between the upper ends of the left and right side plates.

[0010] The beneficial effects of this utility model are: This utility model sets up an upper steel roller and a lower rubber roller inclined to the direction of electrode movement on the electrode discharge movement path. Through the joint action of the upper steel roller and the lower rubber roller, the wrinkles on both sides of the electrode edge can be flattened, thereby ensuring the electrode tension and effectively preventing the breakage of the sheet during subsequent winding. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a structural schematic diagram of the front left side of this utility model.

[0013] Figure 2 This is a structural schematic diagram of the front right side of this utility model.

[0014] Figure 3 This is a schematic diagram of the flattening component described in this utility model.

[0015] Figure 4 This is a schematic diagram of the gap between the support roller and the upper steel roller in this utility model.

[0016] Figure 5 This is a structural schematic diagram of the channel steel beam described in this utility model.

[0017] In the diagram: 1. Left side plate, 2. Right side plate, 3. Support roller, 4. Electrode, 5. U-shaped frame, 6. Upper steel roller, 7. Lower rubber roller, 8. Channel steel beam, 9. Waist-shaped hole, 10. Base plate, 11. Lifting plate, 12. Lifting cylinder, 13. Support, 14. Guide rod, 15. Guide sleeve, 16. Base, 17. Support rod. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] like Figure 1 , Figure 2The positive electrode sheet feeding and flattening mechanism shown has a frame assembly, which includes a base 16, a left side plate 1, a right side plate 2 and two support rods 17. The lower ends of the left side plate 1 and the right side plate 2 are fixed to the two sides of the base 16 respectively, and the two support rods 17 are fixedly connected at intervals between the upper ends of the left side plate 1 and the upper ends of the right side plate 2.

[0020] Two support rollers 3 are rotatably installed between the inner walls of the left side plate 1 and the right side plate 2 on the front side of the support rod 17. The center heights of the two support rollers 3 are the same. After the roller-pressed electrode sheet 4 is discharged from the discharge end of the roller press, it is placed on a pair of support rollers 3.

[0021] A channel steel beam 8 is fixed between the inner wall of the left side plate 1 and the inner wall of the right side plate 2. The channel steel beam 8 is located above the middle of the line connecting the center distances of the two support rollers 3. Flattening components are respectively provided at both ends of the channel steel beam 8 near the inner wall of the left side plate 1 and the inner wall of the right side plate 2.

[0022] in Figure 2 The support roller 3 and electrode plate 4 on the front side of the flattening assembly have been removed to better show the structure of the flattening assembly.

[0023] See Figure 3 , Figure 5 As shown, the flattening assembly includes a U-shaped frame 5 with the opening facing inward. Four waist-shaped holes 9 are evenly distributed around the circumference on the web of the channel steel beam 8. The U-shaped frame 5 is fixed to the channel steel beam 8 by fixing bolts passing through the waist-shaped holes 9. The connection method of the waist-shaped holes 9 allows the U-shaped frame 5 to be installed at an angle relative to the moving direction of the electrode plate 4.

[0024] A bracket is fixed to the upper side of the U-shaped frame 5. An upper steel roller 6 with its surface facing downwards is rotatably mounted on the bracket. The gap between the lowest point of the upper steel roller 6 and the highest point of the support roller 3 is equal to the thickness of the electrode sheet 4. (See attached image) Figure 4 As shown.

[0025] A base plate 10 is fixed to the lower side of the U-shaped frame 5. A lifting plate 11 is provided above the base plate 10. A lifting cylinder 12 with a piston rod connected to the center of the bottom surface of the lifting plate 11 is installed on the base plate 10. Guide rods 14 are fixed to both ends of the lifting plate 11, and guide sleeves 15 are correspondingly installed at both ends of the base plate 10. The lower ends of the guide rods 14 and guide sleeves 15 are slidably engaged. Supports 13 are fixed to both sides of the upper surface of the lifting plate 11. A lower glue roller 7 with its roller surface facing upward is rotatably installed between the supports 13. The lower glue roller 7 rises and abuts against the bottom surface of the electrode 4 when the electrode 4 is flattened.

[0026] First, fixing bolts are passed through the oblong hole 9 to fix the U-shaped frame 5 to the channel steel beam 8, so that the U-shaped frame 5 is tilted towards the front end in the direction of electrode sheet 4. In this way, the upper steel roller 6 and the lower rubber roller 7 are tilted towards the front end in the direction of electrode sheet 4. After being rolled, the electrode sheet 4 is discharged from the discharge end of the roll press and enters the flattening mechanism. The electrode sheet 4 moves through the gap between the support roller 3 and the upper steel roller 6. The lifting cylinder 12 is activated, pushing the lower rubber roller 7 to rise and abut against the bottom surface of the electrode sheet 4. In this way, during the discharge of the electrode sheet 4, the wrinkles on both sides of the electrode sheet 4 can be flattened by the combined action of the upper steel roller 6 and the lower rubber roller 7 tilted in the direction of electrode sheet 4, thereby ensuring the tension of the electrode sheet 4 and effectively preventing the sheet from breaking during subsequent winding.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A positive electrode sheet flattening and unloading mechanism, comprising a frame assembly, the frame assembly having a left side plate (1) and a right side plate (2) spaced apart, wherein a pair of support rollers (3) with the same center height are rotatably mounted between the inner wall of the left side plate (1) and the inner wall of the right side plate (2), and the rolled electrode sheet (4) is placed on the pair of support rollers (3) after being discharged from the discharge end of the roll press, characterized in that: The inner wall of the left side plate (1) and the inner wall of the right side plate (2) are respectively provided with a flattening assembly located between a pair of support rollers (3). The flattening assembly includes a U-shaped frame (5) that can be installed at an angle relative to the electrode (4). An upper steel roller (6) is rotatably arranged on the upper side of the U-shaped frame (5), and a lower rubber roller (7) is rotatably arranged on the lower side of the U-shaped frame (5). The gap between the lowest point of the upper steel roller (6) and the highest point of the support roller (3) is equal to the thickness of the electrode (4). The lower rubber roller (7) rises and abuts against the bottom surface of the electrode (4) when the electrode (4) is flattened.

2. The positive electrode sheet discharge flattening mechanism according to claim 1, wherein: A channel steel beam (8) is fixed between the inner wall of the left side plate (1) and the inner wall of the right side plate (2). The channel steel beam (8) is located above the center distance of a pair of support rollers (3). Four waist-shaped holes (9) are evenly distributed in a circle on the web of the channel steel beam (8). The U-shaped frame (5) is fixed to the channel steel beam (8) by fixing bolts passing through the waist-shaped holes (9).

3. The positive electrode sheet discharge flattening mechanism according to claim 2, characterized by: A base plate (10) is fixed on the lower side of the U-shaped frame (5). A lifting plate (11) is provided above the base plate (10). A lifting cylinder (12) with a piston rod connected to the bottom surface of the lifting plate (11) is installed on the base plate (10). Supports (13) are fixed on both sides of the upper end face of the lifting plate (11). The lower rubber roller (7) is rotatably installed between the supports (13).

4. The positive electrode sheet discharge flattening mechanism according to claim 3, wherein: The lifting plate (11) is fixed with guide rods (14) at both ends, and guide sleeves (15) are installed at both ends of the base plate (10). The lower end of the guide rod (14) slides in cooperation with the guide sleeve (15).

5. The positive electrode sheet discharge flattening mechanism according to claim 1, wherein: The frame assembly has a base (16), the lower ends of the left side plate (1) and the lower ends of the right side plate (2) are respectively fixed to the two sides of the base (16), and a support rod (17) is fixed between the upper ends of the left side plate (1) and the upper ends of the right side plate (2).

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