Hobbing mechanism

Abstract

The utility model relates to a hobbing mechanism which comprises a hobbing support and two hobbing cutter units, the two hobbing cutter units are installed on the hobbing support, a pole piece is in transmission between the two hobbing cutter units, each hobbing cutter unit comprises a driving motor, a coupler, a rolling roller and a hobbing cutter, the hobbing cutter is fixedly arranged on the rolling roller, the driving motor is connected with the hobbing cutter through the coupler, and the rolling roller is connected with the hobbing cutter through the coupler. The driving motor drives the rollers to rotate, the two rollers rotate relatively, and the rolling cutters on the two rollers are meshed with each other to cut the pole piece. According to the hobbing mechanism, pole pieces can be cut off under the condition that the pole pieces are conveyed at a normal speed, the production efficiency of equipment is greatly improved, the hobbing mechanism can be matched with the pole pieces with different breadths, the overall space of the equipment is reduced, and the debugging cost of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a rolling cutting mechanism. Background Art

[0002] With the continuous development of economy and the continuous progress of society, a variety of material consumer goods are provided for people's production and life, and lithium-ion batteries are one of them. As we all know, lithium-ion batteries are widely used in electronic products, electric vehicles or new energy vehicles, and are becoming more and more popular.

[0003] Among them, in the production and manufacturing process of lithium-ion batteries, pole piece gluing is a very critical process. Pole piece gluing is to stick adhesive tape on the positive and negative pole pieces of the battery to protect the pole pieces.

[0004] However, when lithium batteries are produced using the winding process, it is an important process to cut the pole pieces outside the winding area and then use compliant adhesive tape to connect them. Most of the equipment on the market stops the pole piece transmission or reduces the speed of the pole piece material belt before cutting and gluing the pole piece, which affects the production efficiency of the equipment. Utility Model Content

[0005] The main purpose of the utility model is to provide a rolling cutting mechanism to solve the above technical problems, and can cut the pole piece when the pole piece is conveyed at a normal speed, thereby greatly improving the production efficiency of the equipment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rolling cutting mechanism, characterized in that it includes a rolling cutting bracket, a first rolling cutter unit and a second rolling cutter unit, the first rolling cutter unit and the second rolling cutter unit are installed on the rolling cutting bracket, and a pole piece is transmitted between the first rolling cutter unit and the second rolling cutter unit, the first rolling cutter unit includes a first driving motor, a first coupling, a first roller and a first rolling cutter, the first rolling cutter is fixed on the first roller, the first driving motor is connected to the first rolling cutter through the first coupling, the first driving motor drives the first roller to rotate, the second rolling cutter unit includes a second driving motor, a second coupling, a second roller and a second rolling cutter, the second rolling cutter is fixed on the second roller, the second driving motor is connected to the second rolling cutter through the second coupling, the second driving motor drives the second roller to rotate, the first roller and the second roller rotate relative to each other, and the first rolling cutter engages with the second rolling cutter to cut the pole piece.

[0008] As a preferred technical solution, the first rolling cutter is a triangular raised straight blade, and the cutting edge of the first rolling cutter is parallel to the axis of the first roller.

[0009] As a preferred technical solution, the second rolling cutter is a triangular raised straight blade, and the cutting edge of the second rolling cutter is parallel to the axis of the second roller.

[0010] As a preferred technical solution, the rotation speed of the roller surfaces of the first roller and the second roller is the same as the conveying speed of the pole piece.

[0011] As a preferred technical solution, the plane formed by the axis of the first roller and the cutting edge of the first rolling cutter is parallel to the plane formed by the axis of the second roller and the cutting edge of the second rolling cutter.

[0012] The beneficial effects of the utility model are as follows: the above-mentioned rolling cutting mechanism can cut the pole piece when the pole piece is conveyed at a normal speed, which greatly improves the production efficiency of the equipment, can match pole pieces of different widths, reduces the overall space of the equipment, and reduces the cost of equipment debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the pole piece cutting and gluing device involved in the utility model;

[0014] Figure 2 It is a structural schematic diagram of the rolling cutting mechanism involved in the utility model;

[0015] Figure 3 It is a front view of the rolling cutting mechanism involved in the utility model;

[0016] Figure 4 Before cutting Figure 3 Cross-sectional view of the middle DD;

[0017] Figure 5 for Figure 4 A local enlarged view of c1 in the middle;

[0018] Figure 6 For cutting Figure 3 Cross-sectional view of the middle DD;

[0019] Figure 7 for Figure 6 A local enlarged view of c2 in the middle;

[0020] Figure 8 After cutting Figure 3 Cross-sectional view of the middle DD;

[0021] Fig. 9 for Figure 8 A local enlarged view of c3 in the middle;

[0022] Fig.10 It is a working schematic diagram of the pole piece cutting and gluing device before cutting involved in the utility model;

[0023] Fig.11 It is a schematic diagram of the working state of the electrode cutting and gluing device involved in the utility model during cutting;

[0024] Fig.12 It is a working schematic diagram of the electrode cutting and gluing device involved in the utility model after cutting;

[0025] Fig.13 The utility model is a schematic diagram of the working state of the pole piece cutting and gluing device during gluing. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] like Figure 1 As shown, a pole piece cutting and gluing device comprises a first traction roller group 1, a rolling cutting mechanism 2, a first glue preparation mechanism 3, a first rolling and pasting mechanism 4, a second glue preparation mechanism 5, a second rolling and pasting mechanism 6, a tensioning floating roller mechanism 7 and a second traction roller group 8. The first rolling and pasting mechanism 4 and the second rolling and pasting mechanism 6 are arranged opposite to each other. The pole piece a passes through the first traction roller group 1, the rolling cutting mechanism 2, the first rolling and pasting mechanism 4, the second rolling and pasting mechanism 6, the tensioning floating roller mechanism 7 and the second traction roller group 8 in sequence. The first glue preparation mechanism 3 is installed on the first rolling and pasting mechanism On one side of the structure 4, the first glue preparation mechanism 3 prepares glue for the first rolling and pasting mechanism 4, the second glue preparation mechanism 5 is installed on one side of the second rolling and pasting mechanism 6, the second glue preparation mechanism 5 prepares glue for the second rolling and pasting mechanism 6, the first traction roller group 1 and the second traction roller group 8 drive the pole piece transmission, the rolling cutting mechanism 2 cuts the pole piece a, the first rolling and pasting mechanism 4 and the second rolling and pasting mechanism 6 respectively apply glue paper b to the cut end of the pole piece a, and the tensioning floating roller mechanism 7 is installed between the first rolling and pasting mechanism 4 and the second traction roller group 8, and is used to adjust the tension of the pole piece after cutting.

[0028] Specifically, the structure of the first glue preparation mechanism 3 is the same as that of the second glue preparation mechanism 5, the structure of the first rolling mechanism 4 is the same as that of the second rolling mechanism 6, the first rolling mechanism 4 includes a first rolling mounting seat 41, a first rolling adsorption roller 43, a first swing arm 42, a first adsorption driving structure (not shown in the figure) and a first swing arm driving structure (not shown in the figure), the first swing arm 42 is rotatably mounted on the first rolling mounting seat 41, the first rolling adsorption roller 43 is mounted on the first swing arm 42, the first glue preparation mechanism 3 prepares glue on the first rolling adsorption roller 43, the first adsorption driving structure drives the first rolling adsorption roller 43 to rotate, the first swing arm driving structure drives the first swing arm 42 to rotate, and the first rolling adsorption roller 43 is arrayed with adsorption holes for adsorbing the adhesive paper b. The second rolling mechanism 6 includes a second rolling mounting seat 61, a second rolling adsorption roller 63, a second swing arm 62, a second adsorption driving structure (not shown in the figure) and a second swing arm driving structure (not shown in the figure). The second swing arm 62 is rotatably mounted on the second rolling mounting seat 61. The second rolling adsorption roller 63 is mounted on the second swing arm 62. The second glue preparation mechanism 3 prepares glue on the second rolling adsorption roller 63. The second adsorption driving structure drives the second rolling adsorption roller 63 to rotate. The second swing arm driving structure drives the second swing arm 62 to rotate. The second rolling adsorption roller 63 is arrayed with adsorption holes for adsorbing the adhesive paper b.

[0029] Please combine Figure 2 and Figure 3 As shown, the rolling mechanism 2 includes a rolling support 21, a first rolling cutter unit 22 and a second rolling cutter unit 23. The first rolling cutter unit 22 and the second rolling cutter unit 23 are installed on the rolling support 21, and the pole piece is transmitted between the first rolling cutter unit 22 and the second rolling cutter unit 23.

[0030] The structure of the first roller unit 22 is the same as that of the second roller unit 23. The first roller unit 22 includes a first drive motor 221, a first coupling 222, a first roller 223 and a first roller cutter 224. The first roller cutter 224 is fixed on the first roller 223. The first drive motor 221 is connected to the first roller cutter 223 through the first coupling 222. The first drive motor 221 drives the first roller 223 to rotate. The rotation speed of the roller surface of the first roller 223 is the same as the transmission speed of the pole piece a. The first roller cutter 224 is a triangular raised straight blade, and the cutting edge of the first roller cutter 224 is parallel to the axis of the first roller 223. The second rolling cutter unit 23 includes a second drive motor 231, a second coupling 232, a second roller 233 and a second rolling cutter 234. The second rolling cutter 234 is fixed on the second roller 233. The second drive motor 231 is connected to the second rolling cutter 233 through the second coupling 232. The second drive motor 231 drives the second roller 233 to rotate. The rotation speed of the roller surface of the second roller 233 is the same as the transmission speed of the pole piece a. The second rolling cutter 234 is a triangular raised straight blade, and the cutting edge of the second rolling cutter 234 is parallel to the axis of the second roller 233. The plane formed by the axis of the first roller 223 and the cutting edge of the first rolling cutter 224 is parallel to the plane formed by the axis of the second roller 233 and the cutting edge of the second rolling cutter 234. When the first rolling cutter unit 22 and the second rolling cutter unit 23 need to cut the pole piece, as shown in FIG. Figure 4 and 5 As shown, the first driving motor 221 drives the first roller 223 to rotate counterclockwise, and the second driving motor 231 drives the second roller 233 to rotate clockwise, so that the first rolling cutter 224 and the second rolling cutter 234 are close to each other, as shown in FIG. Figure 6 and Figure 7 As shown, the first rolling cutter 224 moves to the bottom, and the second rolling cutter 234 moves to the top. At this time, the first rolling cutter 224 and the second rolling cutter 234 mesh and cut the pole piece, as shown in FIG. Figure 8 and Fig. 9 As shown, the first driving motor 221 drives the first roller 223 to rotate counterclockwise, and the second driving motor 231 drives the second roller 233 to rotate clockwise, so that the first rolling cutter 224 and the second rolling cutter 234 move away from each other.

[0031] The tensioning floating roller mechanism 7 includes a fixed roller 72 and a floating roller 71. The two fixed rollers 72 are arranged with a gap, and the floating roller 71 is arranged between the two fixed rollers 72. The pole piece a is transmitted between the floating roller 71 and the fixed roller 72. The tension of the pole piece a is adjusted through the mobility of the floating roller 72, so that the tension of the pole piece a is kept constant during the transmission process.

[0032] The above-mentioned electrode cutting and gluing device, such as Fig.10As shown, before cutting, the first traction roller group 1 and the second traction roller group 8 jointly drive the pole piece transmission, the first drive motor 221 drives the first roller 223 to rotate counterclockwise, and the second drive motor 231 drives the second roller 233 to rotate clockwise, so that the first rolling cutter 224 and the second rolling cutter 234 are close to each other, the first glue preparation mechanism 3 prepares glue for the first rolling adsorption roller 43, and the adsorption hole of the first rolling adsorption roller 43 adsorbs the adhesive tape b, and the second glue preparation mechanism 5 prepares glue for the second rolling adsorption roller 63, and the adsorption hole of the second rolling adsorption roller 43 adsorbs the adhesive tape b, as shown in FIG. Fig.11 As shown, during cutting, the first rolling cutter 224 moves to the bottom and the second rolling cutter 234 moves to the top. At this time, the first rolling cutter 224 and the second rolling cutter 234 mesh and cut the pole piece, as shown in FIG. Fig.12 As shown, after cutting, the first traction roller group 1 and the second traction roller group 8 are differentially driven, that is, the first traction roller group 1 is slightly decelerated and then driven at the same speed as the second traction roller group 8, so that the cutting end of the pole piece is pulled away from the process setting distance, the first adsorption drive structure drives the first rolling adsorption roller 43 to rotate until the roller surface speed of the first rolling adsorption roller 43 is the same as the transmission speed of the pole piece a, and the second adsorption drive structure drives the second rolling adsorption roller 63 to rotate until the roller surface speed of the second rolling adsorption roller 63 is the same as the transmission speed of the pole piece a, as shown in FIG. Fig.13 As shown, during gluing, the first swing arm driving structure drives the first swing arm 42 to rotate, and the second swing arm driving structure drives the second swing arm 62 to rotate, so that the first rolling adsorption roller 43 and the second rolling adsorption roller 63 are in contact with the pole piece a and are synchronously driven with the pole piece a, so that the adhesive paper b is attached to the gap at the cut end of the pole piece to complete one gluing operation.

[0033] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A rolling cutting mechanism, characterized in that: The invention comprises a rolling cutter support, a first rolling cutter unit and a second rolling cutter unit, wherein the first rolling cutter unit and the second rolling cutter unit are installed on the rolling cutter support, and a pole piece is transmitted between the first rolling cutter unit and the second rolling cutter unit, and the first rolling cutter unit comprises a first driving motor, a first coupling, a first roller and a first rolling cutter, wherein the first rolling cutter is fixedly arranged on the first roller, the first driving motor is connected to the first rolling cutter through the first coupling, and the first driving motor drives the first roller to rotate, and the second rolling cutter unit comprises a second driving motor, a second coupling, a second roller and a second rolling cutter, wherein the second rolling cutter is fixedly arranged on the second roller, the second driving motor is connected to the second rolling cutter through the second coupling, and the second driving motor drives the second roller to rotate, the first roller and the second roller rotate relative to each other, and the first rolling cutter engages with the second rolling cutter to cut the pole piece.

2. The rolling cutting mechanism according to claim 1, characterized in that: The first rolling cutter is a triangular raised straight blade, and the cutting edge of the first rolling cutter is parallel to the axis of the first roller.

3. The rolling cutting mechanism according to claim 2, characterized in that: The second rolling cutter is a triangular raised straight blade, and the cutting edge of the second rolling cutter is parallel to the axis of the second roller.

4. The rolling cutting mechanism according to claim 3, characterized in that: The rotation speed of the roller surfaces of the first roller and the second roller is the same as the conveying speed of the pole piece.

5. The rolling cutting mechanism according to claim 4, characterized in that: A plane formed by the axis of the first roller and the cutting edge of the first rolling cutter is parallel to a plane formed by the axis of the second roller and the cutting edge of the second rolling cutter.

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