A belt pressing device for lithium battery cell winding equipment

Abstract

The utility model provides a belt pressing device for lithium battery cell winding equipment. The utility model includes: a main body, with a blocking block on the top; at least one belt pressing assembly; the belt pressing assembly includes a cantilever, an actuator, a belt pressing roller and a rotating member; one end of the cantilever is located at the top of the main body, and the other end extends to one side of the main body along the X direction; the actuator is connected to the main body, and the output end of the actuator is connected to one end of the cantilever to drive the cantilever to rise and fall; the belt pressing roller is arranged in parallel below the cantilever, and one end of the belt pressing roller is rotatably connected to the main body; the axis of the rotating member is parallel to the Y direction, and the rotating member is connected to the inner wall of the cantilever close to one end of the actuator; wherein the blocking block is located between the two cantilevers and on one side of the rotating member, and contacts the outer wall of the blocking block and the rotating member. The utility model can improve the life of the actuator.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery core production, in particular to a belt pressing device used in lithium battery core winding equipment. Background Art

[0002] The tape pressing device is used for the automatic tape changing and unwinding of the pole piece tape. In the tape pressing device, the cantilever is directly lifted by the actuator, and the actuator is connected to one end of the cantilever. Such long-term lifting and lowering action will cause the actuator to bear a large lateral bending moment, which will greatly shorten the life of the actuator. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the technical problem of damaging the life of the actuator in the prior art.

[0004] In order to solve the above technical problems, on the one hand, the utility model provides a belt pressing device for a lithium battery cell winding device, comprising:

[0005] A main body, with a stopper on one side;

[0006] At least one belt pressing assembly; the belt pressing assembly includes a cantilever, an actuator, a belt pressing roller and a rotating member; the actuator is arranged on one side of the blocking block, and the output end of the actuator is connected to one end of the cantilever to drive the cantilever to rise and fall; the belt pressing roller is arranged in parallel below the cantilever, and one end of the belt pressing roller is rotatably connected to the main body; the axis of the rotating member is parallel to the Y direction, and the rotating member is connected to the inner wall of the cantilever near one end of the actuator;

[0007] Wherein, the rotating member abuts against the blocking block.

[0008] In one embodiment of the utility model, the present application also includes multiple connecting parts for connecting the output end of the actuator and the cantilever; the connecting parts include waist-shaped holes and connecting bolts; the waist-shaped holes are arranged on the cantilever, and the connecting bolts pass through the waist-shaped holes and are threadedly connected to the output end of the actuator.

[0009] In one embodiment of the utility model, the rotating member includes a central shaft and a rotating part rotatably connected to the central shaft, one end of the central shaft is connected to the cantilever, and the other end is connected to the rotating part.

[0010] In one embodiment of the utility model, a bearing is connected between the central shaft and the rotating part.

[0011] In one embodiment of the utility model, the belt pressing assembly also includes an adjusting part and a belt pressing block arranged at the bottom of the cantilever; a mounting groove is provided at the bottom of the cantilever, and a protrusion installed in the mounting groove is provided at the top of the belt pressing block; the adjusting part includes a rotating shaft and clamping screws symmetrically arranged on both sides of the rotating shaft; the protrusion is hinged to the cantilever through the rotating shaft, and the axis of the rotating shaft is arranged along the Y direction; the axis of the clamping screw is parallel to the Y direction, and the clamping screw connects the protrusion and the cantilever.

[0012] In one embodiment of the utility model, the adjustment part also includes a tightening screw group symmetrically arranged on both sides of the rotating shaft, and the top of the cantilever is provided with a bolt hole group matching the tightening screw group; the tightening screw group is threadedly connected to the bolt hole group and pressed against the top of the protrusion.

[0013] In one embodiment of the utility model, the jacking screw group includes at least one jacking screw, the bolt hole group includes at least one bolt hole, and the bolt holes and the jacking screws are arranged in a one-to-one correspondence.

[0014] In one embodiment of the utility model, the adjustment part further comprises a tightening screw group symmetrically arranged on both sides of the rotating shaft, the axis of the tightening screw group is parallel to the Z direction, and the tightening screw group connects the protrusion and the cantilever.

[0015] In one embodiment of the utility model, two belt pressing assemblies are provided, and the blocking block is located between the two belt pressing assemblies.

[0016] In one embodiment of the utility model, a soft pad is connected to the bottom of the belt pressing block.

[0017] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0018] The belt pressing device used in the lithium battery cell winding equipment of the utility model can increase the life of the actuator and also improve the space utilization rate. The application solves the problem that the actuator is subjected to large lateral bending moment when lifting or pressing the cantilever in a small space, which affects the life of the actuator, without changing the existing structure layout of the pressing device. The structure is simple, the operation is stable, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model and in combination with the accompanying drawings, wherein:

[0020] Figure 1 This is a structural schematic diagram of a belt pressing device used in a lithium battery cell winding device in a preferred embodiment of the utility model;

[0021] Figure 2 for Figure 1 A top view of a tape pressing device used in a lithium battery cell winding device is shown;

[0022] Figure 3 for Figure 1 A partial schematic diagram of a tape pressing device used in a lithium battery cell winding device is shown;

[0023] Figure 4 for Figure 2 AA section view;

[0024] Figure 5 for Figure 3 Front view diagram of .

[0025] Description of the reference numerals in the specification: 100, main body; 110, blocking block;

[0026] 200, belt pressing assembly; 210, cantilever; 211, mounting groove; 220, actuator; 230, belt pressing roller; 240, rotating member; 241, central axis; 242, rotating part; 250, adjusting part; 251, rotating shaft; 252, clamping screw; 260, belt pressing block; 261, protrusion; 262, cushion; 270, tightening screw group; 280, tensioning screw group;

[0027] 300. Connecting piece; 310. Waist-shaped hole. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the utility model and implement it, but the embodiments are not intended to limit the utility model.

[0029] Reference Figure 1 to Figure 4 As shown, it should be noted that Figure 1 The left-right direction is the X direction, the direction perpendicular to the paper is the Y direction, and the up-down direction is the Z direction. The X direction, Y direction, and Z direction constitute a spatial rectangular coordinate system.

[0030] The present invention provides a belt pressing device for a lithium battery cell winding device, comprising:

[0031] A main body 100, the main body 100 is perpendicular to the X direction, a blocking block 110 is provided on one side of the main body 100, the blocking block 110 is perpendicular to the Y direction, and the main body 100 and the blocking block 110 are vertically arranged;

[0032] At least one belt pressing assembly 200, when there are two belt pressing assemblies 200, the two belt pressing assemblies 200 are symmetrically arranged on both sides of the blocking block 110 along the Y direction. The belt pressing assembly 200 includes a cantilever 210, an actuator 220, a belt pressing roller 230 and a rotating member 240; one end of the cantilever 210 is located above the main body 100, and the other end extends to one side of the main body 100 along the X direction; the actuator 220 is arranged on a side surface of the blocking block 110, and the output end of the actuator 220 is connected to one end of the cantilever 210, which is used to drive the cantilever 210 to rise and fall; in some embodiments, the actuator 220 can be a slide cylinder, an electric cylinder, a linear module or a servo press. The belt holding roller 230 is arranged parallel to the lower part of the cantilever 210, and one end of the belt holding roller 230 is rotatably connected to the main body 100; the axis of the rotating member 240 is parallel to the Y direction, and the rotating member 240 is connected to the inner wall of the cantilever 210 close to the actuator 220; the belt holding roller 230 can be cylindrical or square.

[0033] The blocking block 110 is located between the two cantilevers 210 and on one side of the rotating member 240 , and the blocking block 110 abuts against the rotating member 240 .

[0034] See also Figure 5 In the comparative embodiment, when the actuator 220 raises and lowers the cantilever 210, the force point of the cantilever 210 is at point B where the actuator 220 and the cantilever 210 are connected. When the cantilever 210 and the belt hold roller 230 are pressed tightly, the cantilever 210 will be subjected to the upward force F1 of the belt hold roller 230. Then, the actuator 220 is subjected to a bending moment W1 relative to point B by F1. The cylinder cannot withstand a large bending moment, thereby affecting the life of the actuator 220.

[0035] See also Figure 5 The present application sets a blocking block 110 and a rotating member 240. When the actuator 220 moves downward, it drives the cantilever 210 downward to press against the belt-holding roller 230. The cantilever 210 will be subjected to the upward force F1 of the belt-holding roller 230, and the actuator 220 will be subjected to a bending moment W1 relative to point B caused by F1. At the same time, the rotating member 240 will be in close contact with the blocking block 110, and the rotating member 240 will interact with the blocking block 110 F2, so that the actuator 220 will be subjected to a bending moment W2 relative to point B caused by F2. The bending moment W2 is in opposite directions to the bending moment W1, so that the bending moment W2 can offset and weaken the influence of the bending moment W1 on the actuator 220. It can be seen that the present application can improve the life of the actuator 220. By comparing the improvements before and after in actual production, the present application can increase the life of the actuator 220 while also improving space utilization. The present application solves the problem of the actuator being subjected to large lateral bending moments when the cantilever 210 is lifted or pressed in a small space, thereby affecting the life of the actuator, without changing the existing structural layout of the pressing device. The present application has a simple structure, stable operation, and low manufacturing cost.

[0036] Furthermore, the present application also includes a plurality of connecting members 300 for connecting the output end of the actuator 220 with the cantilever 210; the connecting member 300 includes a waist-shaped hole 310 and a connecting bolt; the waist-shaped hole 310 is provided on the cantilever 210, and the connecting bolt passes through the waist-shaped hole 310 and is threadedly connected to the output end of the actuator 220. Specifically, the present embodiment is provided with a plurality of waist-shaped holes 310, and the distance from the rotating member 240 to the blocking block 110 is adjusted by adjusting the connecting bolts to be connected to different positions in the waist-shaped holes 310, so as to adapt to the errors existing in manufacturing and installation.

[0037] Further, the rotating member 240 includes a central shaft 241 and a rotating portion 242 rotatably connected to the central shaft 241, one end of the central shaft 241 is connected to the cantilever 210, and the other end is connected to the rotating portion 242. For example, the rotating member 240 can be a cam follower. In some embodiments, the rotating portions 242 of the two belt pressing assemblies 200 are connected to the cantilever 210 through a central shaft 241 respectively. In other embodiments, the rotating portions 242 of the two belt pressing assemblies 200 can be connected to the cantilever 210 through a central shaft 241. A bearing is connected between the central shaft 241 and the rotating portion 242.

[0038] In some comparative embodiments, the parallelism between the cantilever 210 and the belt holding roller 230 depends only on the machining accuracy of the workpiece itself. However, on the one hand, after the actuator 220 lifts and lowers the cantilever 210 for a long time, the accuracy of the parallelism between the cantilever 210 and the belt holding roller 230 cannot be ensured. In this way, when changing the roll and holding the belt (especially for wider pole pieces, the accuracy deviation is more obvious), one end (for example, the left end) of the holding cantilever 210 will be tilted, which will cause the pole piece to be unable to be fully pressed. If the pole piece is not pressed tightly, it will cause the flying belt phenomenon, which requires manual intervention, thereby affecting production efficiency. To solve this problem, the belt pressing assembly 200 of the present application further includes an adjusting part 250 and a belt pressing block 260 arranged at the bottom of the cantilever 210; a mounting groove 211 is arranged at the bottom of the cantilever 210, and a protrusion 261 installed in the mounting groove 211 is arranged at the top of the belt pressing block 260; the adjusting part 250 includes a rotating shaft 251 and clamping screws 252 symmetrically arranged on both sides of the rotating shaft 251; the protrusion 261 is hinged to the cantilever 210 through the rotating shaft 251, and the axis of the rotating shaft 251 is arranged along the Y direction; the axis of the clamping screw 252 is parallel to the Y direction, and the clamping screw 252 connects the protrusion 261 and the cantilever 210. The adjusting part 250 includes a rotating shaft 251 and clamping screws 252 symmetrically arranged on both sides of the rotating shaft 251. In some embodiments, there may be multiple clamping screws 252.

[0039] Specifically, the present embodiment is provided with a rotating shaft 251 and clamping screws 252 disposed on both sides of the rotating shaft 251, so that the belt pressing block 260 can rotate around the rotating shaft 251 in the XZ plane (that is, the belt pressing block 260 can be adjusted to be parallel to the belt pressing roller 230), and the cantilever 210 and the belt pressing block 260 can be fastened by the clamping screws 252. The specific operation process is as follows: the actuator 220 is in a clamped state, and it is visually observed whether there is a gap between the belt pressing roller 230 and the belt pressing block 260. If there is a gap, the belt pressing block 260 is manually shaken until there is no gap between the belt pressing block 260 and the belt pressing roller 230, and then the cantilever 210 and the belt pressing block 260 are fastened by the clamping screws 252 to prevent the belt pressing block 260 from rotating during the working process. It can be seen that the present embodiment can flexibly adjust the belt pressing block 260 so that the belt pressing block 260 is parallel to the belt pressing roller 230 , thereby achieving a better belt pressing effect and improving the belt splicing yield rate.

[0040] Further, the adjustment part 250 also includes a tightening screw group 270 symmetrically arranged on both sides of the rotating shaft 251, and a bolt hole group matching the tightening screw group 270 is provided at the top of the cantilever 210; the tightening screw group 270 is threadedly connected to the bolt hole group and pressed on the top of the protrusion 261. Specifically, the tightening screw group 270 in this embodiment can pre-tighten the cantilever 210 and the belt pressing block 260 to prevent the belt pressing block 260 from being misplaced in the Z direction. Further, the tightening screw group 270 includes at least one tightening screw, and the bolt hole group includes at least one bolt hole, and the bolt hole and the tightening screw are arranged one by one. The corresponding number can be arranged according to the length of the cantilever 210. Further improve the connection reliability of the cantilever 210 and the belt pressing block 260.

[0041] Further, the adjusting portion 250 further includes a tightening screw group 280 symmetrically arranged on both sides of the rotating shaft 251, the axis of the tightening screw group 280 is parallel to the Z direction, and the tightening screw group 280 connects the protrusion 261 and the cantilever 210. Further, the tightening screw group 280 includes at least one tightening screw. Specifically, the tightening screw group 280 provided in this embodiment improves the connection stability between the protrusion 261 and the cantilever 210, and prevents the cantilever 210 from being misplaced or tilted up and down (i.e., in the Z direction).

[0042] Furthermore, a soft pad 262 is connected to the bottom of the tape pressing block 260. Specifically, the soft pad 262 provided in this embodiment further protects the pole piece, and prevents the pole piece from being damaged by excessive pressing force.

[0043] In this embodiment, the contact surface between the cantilever and the belt pressing roller can be determined by adjusting the jacking screw group 270 and the tensioning screw group 280 , and then the cantilever and the belt pressing block 260 can be fixed by adjusting the clamping screw 252 .

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the utility model creation.

Claims

1. A belt pressing device for a lithium battery cell winding device, characterized in that: include: A main body, with a stopper on one side; At least one belt pressing assembly, the belt pressing assembly includes a cantilever, an actuator, a belt pressing roller and a rotating member; the actuator is arranged on one side of the blocking block, and the output end of the actuator is connected to one end of the cantilever to drive the cantilever to rise and fall; the belt pressing roller is arranged in parallel below the cantilever, and one end of the belt pressing roller is rotatably connected to the main body; the axis of the rotating member is parallel to the Y direction, and the rotating member is connected to the inner wall of the cantilever near one end of the actuator; Wherein, the rotating member abuts against the blocking block.

2. The tape pressing device for lithium battery cell winding equipment according to claim 1, characterized in that: It also includes a plurality of connectors for connecting the output end of the actuator with the cantilever; the connectors include waist-shaped holes and connecting bolts; the waist-shaped holes are arranged on the cantilever, and the connecting bolts pass through the waist-shaped holes and are threadedly connected to the output end of the actuator.

3. The tape pressing device for lithium battery cell winding equipment according to claim 2, characterized in that: The rotating member comprises a central shaft and a rotating part rotatably connected to the central shaft. One end of the central shaft is connected to the cantilever, and the other end is connected to the rotating part.

4. The tape pressing device for lithium battery cell winding equipment according to claim 3, characterized in that: A bearing is connected between the central shaft and the rotating part.

5. The tape pressing device for lithium battery cell winding equipment according to claim 1, characterized in that: The belt pressing assembly also includes an adjusting portion and a belt pressing block arranged at the bottom of the cantilever; a mounting groove is provided at the bottom of the cantilever, and a protrusion installed in the mounting groove is provided at the top of the belt pressing block; the adjusting portion includes a rotating shaft and clamping screws symmetrically arranged on both sides of the rotating shaft; the protrusion is hinged to the cantilever through the rotating shaft, and the axis of the rotating shaft is arranged along the Y direction; the axis of the clamping screw is parallel to the Y direction, and the clamping screw connects the protrusion and the cantilever.

6. The tape pressing device for lithium battery cell winding equipment according to claim 5, characterized in that: The adjusting part also includes a tightening screw group symmetrically arranged on both sides of the rotating shaft, and the top of the cantilever is provided with a bolt hole group matching the tightening screw group; the tightening screw group is threadedly connected to the bolt hole group and pressed against the top of the protrusion.

7. The tape pressing device for lithium battery cell winding equipment according to claim 6, characterized in that: The jacking screw group includes at least one jacking screw, and the bolt hole group includes at least one bolt hole, and the bolt holes are arranged in a one-to-one correspondence with the jacking screw.

8. The tape pressing device for lithium battery cell winding equipment according to claim 7, characterized in that: The adjusting part further comprises a tightening screw group symmetrically arranged on both sides of the rotating shaft, the axis of the tightening screw group is parallel to the Z direction, and the tightening screw group connects the protrusion and the cantilever.

9. The tape pressing device for lithium battery cell winding equipment according to claim 1, characterized in that: The belt pressing components are provided in two numbers, and the blocking block is located between the two belt pressing components.

10. The tape pressing device used in the lithium battery cell winding equipment according to claim 5, characterized in that: The bottom of the belt pressing block is connected with a soft pad.

Images