Diaphragm winding mechanism and lithium battery winding equipment

Abstract

The embodiment of the utility model provides a diaphragm winding mechanism and lithium battery winding equipment, the diaphragm winding mechanism comprises a clamping assembly, a first connecting rod assembly and a driving assembly, the two ends of the first connecting rod assembly are respectively connected with the clamping assembly and the driving assembly; the clamping assembly comprises a first clamping part and a second clamping part arranged corresponding to the first clamping part, and the driving assembly drives the first connecting rod assembly to stretch or retract so as to achieve opening and closing actions of the first clamping part and the second clamping part. According to the diaphragm winding device, the driving assembly drives the first connecting rod assembly to stretch or retract, so that opening and closing actions of the clamping assembly can be achieved, the diaphragm is clamped, the diaphragm can enter winding work more quickly, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to winding technical field especially relates to a diaphragm winding mechanism and lithium battery winding equipment. BACKGROUND

[0002] In the lithium battery manufacturing process, the winding of the battery cell is one of the key links. The conventional winding equipment widely used in the market needs to go through the following steps after completing the transposition operation of the battery cell: first, the diaphragm is combined, then the winding needle is stretched out, then the diaphragm is clamped by the inner needle, then the tail part of the diaphragm of the previous battery cell is cut off by the diaphragm cutting mechanism, the winding needle starts to rotate to start winding the diaphragm, then the positive and negative materials are added in succession, and finally the winding process of the battery cell starts. This series of actions is complicated, which leads to a long overall winding time and affects the production efficiency. SUMMARY

[0003] The utility model provides a diaphragm winding mechanism and lithium battery winding equipment, which aims to solve the problem of long overall winding time caused by too many preparations before winding of the existing winding equipment.

[0004] The utility model embodiment provides a diaphragm winding mechanism, which comprises a clamping assembly, a first connecting rod assembly and a driving assembly, both ends of the first connecting rod assembly are connected with the clamping assembly and the driving assembly respectively, the clamping assembly comprises a first clamping part and a second clamping part arranged correspondingly with the first clamping part, and the driving assembly drives the first connecting rod assembly to stretch out or retract, so as to realize the opening and closing action of the first clamping part and the second clamping part.

[0005] Specifically, the diaphragm winding mechanism further comprises a fixing seat, the fixing seat is provided with a mounting space, and the first connecting rod assembly is located in the mounting space.

[0006] Specifically, the first clamping part comprises a first clamping body and a first clamping piece, the second clamping part comprises a second clamping body and a second clamping piece, a first clamping piece fixing portion is arranged on one side of the first clamping body facing the second clamping body, a second clamping piece fixing portion is arranged on one side of the second clamping body facing the first clamping body, the first clamping piece is mounted on the first clamping piece fixing portion, and the second clamping piece is mounted on the second clamping piece fixing portion.

[0007] Specifically, the first connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first clamping piece fixing portion penetrates into the mounting space and is connected with one end of the first connecting rod, one end of the second clamping piece fixing portion penetrates into the mounting space and is connected with one end of the second connecting rod, and the other end of the first connecting rod and the other end of the second connecting rod are both connected with the driving assembly.

[0008] Specifically, the diaphragm winding mechanism further comprises a second connecting rod assembly, two ends of the second connecting rod assembly are connected with the first clamping part and the second clamping part respectively.

[0009] Specifically, one side of the first clamping body towards the second clamping body is further provided with a first connecting rod fixing part, one side of the second clamping body towards the first clamping body is further provided with a second connecting rod fixing part, the second connecting rod assembly comprises a third connecting rod piece and a fourth connecting rod piece, one end of the third connecting rod piece is connected with the first connecting rod fixing part, the other end of the third connecting rod piece is connected with the first clamping piece fixing part, one end of the fourth connecting rod piece is connected with the second connecting rod fixing part, and the other end of the fourth connecting rod piece is connected with the second clamping piece fixing part.

[0010] Specifically, the second connecting rod assembly is provided in multiple groups, each group comprising a third connecting rod piece and a fourth connecting rod piece, and each group of the second connecting rod assembly is arranged in an axial direction of the clamping assembly.

[0011] Specifically, the driving assembly comprises a guide rod, a wire bearing and a driving piece connected in sequence, the other end of the first connecting rod piece and the other end of the second connecting rod piece are connected to different positions of the guide rod in the axial direction, the driving piece can drive the wire bearing to move along one end of the guide rod and drive the guide rod to move towards the direction of the clamping assembly so as to stretch the first connecting rod assembly.

[0012] Specifically, the driving assembly further comprises a reset piece, one end of the reset piece is connected to the guide rod, and the other end of the reset piece is connected to the inner wall of the fixed seat, and the reset piece is used for resetting the guide rod to retract the first connecting rod assembly.

[0013] The utility model embodiment further provides a lithium battery winding equipment, including diaphragm winding mechanism as described above.

[0014] The utility model embodiment provides a diaphragm winding mechanism and lithium battery winding equipment, the diaphragm winding mechanism includes clamping assembly, first connecting rod assembly and driving assembly, two ends of first connecting rod assembly are connected clamping assembly and driving assembly respectively, clamping assembly includes first clamping part and with first clamping part corresponding second clamping part is provided, driving assembly drives first connecting rod assembly stretches or retracts, to realize first clamping part and second clamping part's open and shut action. BRIEF DESCRIPTION OF DRAWINGS

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the external structure of the diaphragm winding mechanism provided in an embodiment of this utility model;

[0017] Figure 2 Internal cross-section of the diaphragm winding mechanism provided in the embodiment of this utility model Figure 1 ;

[0018] Figure 3 Internal cross-section of the diaphragm winding mechanism provided in the embodiment of this utility model Figure 2 ;

[0019] Figure 4 for Figure 3 Enlarged view of the A-structure in the middle;

[0020] Figure 5 An internal cross-sectional view of the clamping assembly provided in an embodiment of this utility model.

[0021] Explanation of the markings in the image:

[0022] 1. Clamping assembly; 11. First clamping part; 111. First clamping body; 112. First clamping piece; 113. First clamping piece fixing part; 114. First connecting rod fixing part; 12. Second clamping part; 121. Second clamping body; 122. Second clamping piece; 123. Second clamping piece fixing part; 124. Second connecting rod fixing part;

[0023] 2. First link assembly; 21. First link member; 22. Second link member;

[0024] 3. Drive assembly; 31. Guide rod; 32. Wire bearing; 33. Drive component; 34. Reset component;

[0025] 4. Mounting bracket; 41. Installation space;

[0026] 5. Second link assembly; 51. Third link; 52. Fourth link. Detailed Implementation

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be understood that the terms "comprise" and "include" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0029] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clearly indicated by the context, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0030] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0031] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a diaphragm winding mechanism, comprising a clamping assembly 1, a first connecting rod assembly 2 and a driving assembly 3, both ends of the first connecting rod assembly 2 are connected with the clamping assembly 1 and the driving assembly 3 respectively, the clamping assembly 1 comprises a first clamping part 11 and a second clamping part 12 arranged correspondingly with the first clamping part 11, and the driving assembly 3 drives the first connecting rod assembly 2 to stretch or retract, so as to realize the opening and closing action of the first clamping part 11 and the second clamping part 12.

[0032] In the embodiment, the clamping assembly 1 is used for clamping the diaphragm, and more specifically, the first clamping part 11 and the second clamping part 12 of the clamping assembly 1 are correspondingly arranged, and a clamping space is formed between the first clamping part 11 and the second clamping part 12 and has sufficient clamping force and wear resistance to ensure that the diaphragm can be stably clamped during the winding process. The first connecting rod assembly 2 is a transmission mechanism, and the two ends thereof are connected with the clamping assembly 1 and the driving assembly 3 respectively. The driving assembly 3 is used for providing a driving force to drive the first connecting rod assembly 2 to extend and retract. The specific process is as follows: when the diaphragm needs to be clamped, the driving assembly 3 drives the first connecting rod assembly 2 to extend towards the clamping assembly 1, so that the first clamping part 11 and the second clamping part 12 are opened. Then the diaphragm is placed in the clamping space. The driving assembly 3 is driven again to make the first connecting rod assembly 2 retract away from the clamping assembly 1. The first clamping part 11 and the second clamping part 12 are closed to achieve clamping, which helps to provide a stable clamping force for subsequent winding operation. When the diaphragm needs to be released, the driving assembly 3 drives the first connecting rod assembly 2 to extend again, so that the first clamping part 11 and the second clamping part 12 are opened. Then the diaphragm can be taken out of the clamping space. In the embodiment, the opening and closing actions of the clamping assembly 1 can be achieved by driving the first connecting rod assembly 2 to extend or retract through the driving assembly 3, so that the diaphragm can be clamped. The diaphragm can enter the winding work more quickly, and the work efficiency is improved.

[0033] Specifically, as shown in Figure 1 and Figure 2 , the diaphragm winding mechanism further comprises a fixing seat 4, and the fixing seat 4 is provided with a mounting space 41. The first connecting rod assembly 2 is located in the mounting space 41.

[0034] In the embodiment, in order to make the installation of each component in the diaphragm winding mechanism more stable, the fixing seat 4 is preferably provided, and the fixing seat 4 has a mounting space. The first connecting rod assembly 2 is located in the mounting space 41 to achieve protection of the first connecting rod assembly 2, effectively preventing the first connecting rod assembly 2 from being collided and damaged by external objects. One end of the clamping assembly 1 and one end of the driving assembly extend into the mounting space 41 from two ends of the mounting space 41 and are connected with two ends of the first connecting rod assembly 2, so that the connection of the entire diaphragm winding mechanism is more compact, unnecessary space occupation is reduced, and the overall efficiency and stability of the diaphragm winding mechanism are improved.

[0035] Specifically, as shown in Figures 2-5As shown, the first clamping part 11 comprises a first clamping body 111 and a first clamping piece 112, and the second clamping part 12 comprises a second clamping body 121 and a second clamping piece 122. The first clamping body 111 is provided with a first clamping piece fixing part 113 on one side facing the second clamping body 121, and the second clamping body 121 is provided with a second clamping piece fixing part 123 on one side facing the first clamping body 111. The first clamping piece 112 is installed on the first clamping piece fixing part 113, and the second clamping piece 122 is installed on the second clamping piece fixing part 123.

[0036] In this embodiment, the first clamping part 11 and the second clamping part 12 are oppositely arranged, and correspondingly, the first clamping body 111 and the second clamping body 121 are also oppositely arranged. The first clamping body 111 and the second clamping body 121 serve as the main support structure of the two clamping parts, which can provide sufficient strength and rigidity to ensure that they are not easily deformed or damaged during clamping. In order to make the clamping of the diaphragm more stable, the respective clamping bodies are provided with corresponding clamping piece fixing parts for fixing the first clamping piece 112 and the second clamping piece 122, so that the two clamping pieces can be firmly fixed on the corresponding clamping bodies and are not easy to fall off or loosen, thereby ensuring the stability and reliability of clamping. In this embodiment, the first clamping piece 112 and the second clamping piece 122 are independently installed on the respective clamping piece fixing parts. When the clamping pieces are worn or damaged, they only need to be removed from the clamping piece fixing parts and replaced with new clamping pieces, without the need to replace the entire clamping part, thereby reducing maintenance costs.

[0037] Specifically, as shown in Figures 2-5 , the first connecting rod assembly 2 comprises a first connecting rod 21 and a second connecting rod 22. One end of the first clamping piece fixing part 113 penetrates the installation space 41 and is connected to one end of the first connecting rod 21, and one end of the second clamping piece fixing part 123 penetrates the installation space 41 and is connected to one end of the second connecting rod 22. The other end of the first connecting rod 21 and the other end of the second connecting rod 22 are both connected to the driving assembly 3.

[0038] In this embodiment, the first connecting rod 21 and the second connecting rod 22 are oppositely inclined towards one side of the clamping assembly 1 and are respectively connected to one end of the first clamping piece fixing part 113 and one end of the second clamping piece fixing part 123. When the driving assembly 3 is driven, the first connecting rod 21 and the second connecting rod 22 stretch, so that the angle of their opposite inclination becomes smaller, and the first connecting rod 21 and the second connecting rod 22 move apart towards both sides, thereby opening the first clamping part 11 and the second clamping part 12 (for reference Figure 5 ). In this embodiment, the direct connection of the two connecting rods with the corresponding clamping piece fixing parts enhances the stability of the entire structure, so that the first connecting rod assembly 2 is not easily deformed or damaged when it is stretched or retracted.

[0039] Specifically, as shown in Figures 2-5As shown, the diaphragm winding mechanism further comprises a second linkage assembly 5, two ends of the second linkage assembly 5 are connected with the first clamping part 11 and the second clamping part 12 respectively.

[0040] In this embodiment, in order to make the opening and closing of the first clamping part 11 and the second clamping part 12 more smooth, the second linkage assembly 5 can be arranged between the first clamping part 11 and the second clamping part 12, and under the driving of the driving assembly 3, the second linkage assembly 5 can also be stretched or retracted, in specific implementation, when the first linkage assembly 2 is stretched towards the direction of the clamping assembly 1, the second linkage assembly 5 is stretched towards the direction of the first linkage assembly 2, so that the first clamping part 11 and the second clamping part 12 have two stretching forces, which can realize opening faster, and for the same reason, when the first linkage assembly 2 is retracted away from the clamping assembly 1, the second linkage assembly 5 is retracted away from the first linkage assembly 2, so that the first clamping part 11 and the second clamping part 12 have two retraction forces, which can realize closing faster.

[0041] Specifically, as shown in the figure, Figures 2-5 The side of the first clamping body 111 towards the second clamping body 121 is further provided with a first linkage fixing part 114, the side of the second clamping body 121 towards the first clamping body 111 is further provided with a second linkage fixing part 124, the second linkage assembly 5 comprises a third linkage piece 51 and a fourth linkage piece 52, one end of the third linkage piece 51 is connected with the first linkage fixing part 114, the other end of the third linkage piece 51 is connected with the first clamping piece fixing part 113, one end of the fourth linkage piece 52 is connected with the second linkage fixing part 124, the other end of the fourth linkage piece 52 is connected with the second clamping piece fixing part 123.

[0042] In this embodiment, the mounting positions of the components in the vertical height of the first clamping body 111 are: the first connecting rod fixing part 114-the first clamping piece fixing part 113-the first clamping piece 112, and the mounting positions of the components in the vertical height of the second clamping body 121 are: the second clamping piece 122-the second clamping piece fixing part 123-the second connecting rod fixing part 124, and the space between the first clamping piece 112 and the second clamping piece 122 is the clamping space. In order to make the opening and closing of the first clamping part 11 and the second clamping part 12 more smooth, corresponding connecting rod parts, i.e., the third connecting rod part 51 and the fourth connecting rod part 52, are arranged on the first clamping body 111 and the second clamping body 121 respectively, and the third connecting rod part 51 and the fourth connecting rod part 52 are relatively inclined towards the side of the fixed seat 4, and the specific mounting positions of the two are: one end of the third connecting rod part 51 is connected with the first connecting rod fixing part 114, the other end of the third connecting rod part 51 is connected with the first clamping piece fixing part 113, one end of the fourth connecting rod part 52 is connected with the second connecting rod fixing part 124, and the other end of the fourth connecting rod part 52 is connected with the second clamping piece fixing part 123, so as to realize fixed connection. In this embodiment, through the cooperation of the third connecting rod part 51, the fourth connecting rod part 52, the first connecting rod part 21 and the second connecting rod part 22, the opening and closing of the first clamping part 11 and the second clamping part 12 are more easy.

[0043] Specifically, as shown in Figure 4 The second connecting rod assembly 5 is provided in multiple groups, and each group includes the third connecting rod part 51 and the fourth connecting rod part 52, and each group of the second connecting rod assembly 5 is arranged in the axial direction of the clamping assembly 1.

[0044] The existing diaphragm clamping mechanism usually uses guide columns or guide sleeves at one end of the diaphragm clamping needle and uses lock mouths to position the diaphragm clamping needle at the other end. When the clamping range of this clamping mechanism is wider than 200 mm, the clamping force gradually decreases from the edge of the diaphragm to the middle, which affects the rolling speed of the diaphragm and causes uneven internal stress of the diaphragm. Therefore, in this embodiment, the first clamping body 111 and the second clamping body 121 of the clamping assembly 1 are provided with sufficient length, and multiple groups of the second connecting rod assembly 5 are arranged in the axial direction of the clamping assembly 1. In the clamping process, the diaphragm is clamped by the retraction force of each group of the second connecting rod assembly 5 and the first connecting rod assembly 2. This arrangement can make the clamping force from the edge of the diaphragm to the middle uniform and ensure that the clamping force is sufficient, so as to realize high rolling speed of the diaphragm and uniform internal stress of the diaphragm.

[0045] Specifically, as shown in Figures 2-3As shown, the driving assembly 3 comprises a guide rod 31, a wire bearing 32 and a driving member 33 connected in sequence, the other end of the first connecting rod member 21 and the other end of the second connecting rod member 22 are connected to different positions of the guide rod 31 in the axial direction, and the driving member 33 can drive the wire bearing 32 to move along one end of the guide rod 31 and drive the guide rod 31 to move towards the clamping assembly 1 to stretch the first connecting rod assembly 2.

[0046] In the embodiment, the guide rod 31 comprises a first guide rod and a second guide rod, the first guide rod is vertically arranged in the mounting space 41, the other end of the first connecting rod member 21 and the other end of the second connecting rod member 22 are connected to different positions of the first guide rod (for example, can be connected to both ends of the first guide rod), the second guide rod is transversely arranged and one end is connected to a middle position of the first guide rod, and the other end extends away from the first connecting rod assembly 2, the wire bearing 32 is a hollow column structure and is sleeved on the other end of the second guide rod, one end of the driving member 33 extends into the mounting space 41 and is connected to the other end of the guide rod 31, and the other end of the driving member 33 is outside the mounting space 41, the other end of the driving member 33 can be pushed to move towards the clamping assembly 1, and the wire bearing 32 is driven to move on the second guide rod, so that the first connecting rod assembly 2 is stretched, and the first clamping part 11 and the second clamping part 12 are opened. In specific implementation, one end of the driving member 33 is a conical column, and the conical end can extend into the hollow area of the wire bearing 32 when the driving member 33 is pushed, until the column of the driving member 33 contacts and pushes the wire bearing 32.

[0047] Specifically, as shown in the figure, Figures 2-3 The driving assembly 3 further comprises a reset member 34, one end of the reset member 34 is connected to the guide rod 31, and the other end of the reset member 34 is connected to the inner wall of the fixed seat 4, and the reset member 34 is used for resetting the guide rod 31 to retract the first connecting rod assembly 2.

[0048] In the embodiment, by directly connecting the reset member 34 between the guide rod 31 and the inner wall of the fixed seat 4, the mounting space 41 can be effectively utilized, the overall structure is more compact, and the reset member 34 can automatically reset the guide rod 31 and the first connecting rod assembly 2 to the initial position by using the elastic force or restoring force of the reset member 34 to realize the closing of the first clamping part 11 and the second clamping part 12. In specific implementation, a plurality of reset members 34 are arranged and vertically spaced apart between the guide rod 31 and the inner wall of the fixed seat 4, and the reset member 34 can be a spring. In the embodiment, the reset member 34 is arranged and the closing of the clamping assembly 1 is realized by the reset function of the reset member 34, without the need for additional external force to realize the reset, thereby improving the efficiency and reliability of the overall structure.

[0049] The utility model embodiment further provides a lithium battery winding equipment, including the diaphragm winding mechanism as described above.

[0050] The above merely describes a specific implementation of the present application, but the scope of protection of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be encompassed within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. A diaphragm winding mechanism characterized by, The device comprises a clamping assembly, a first connecting rod assembly and a driving assembly, two ends of the first connecting rod assembly are connected with the clamping assembly and the driving assembly respectively, the clamping assembly comprises a first clamping part and a second clamping part arranged correspondingly with the first clamping part, and the driving assembly drives the first connecting rod assembly to stretch or retract to realize the opening and closing action of the first clamping part and the second clamping part.

2. The diaphragm winding mechanism of claim 1, wherein, The device further comprises a fixing seat, the fixing seat is provided with a mounting space, and the first connecting rod assembly is located in the mounting space.

3. The septum winding mechanism of claim 2, wherein, The first clamping part comprises a first clamping body and a first clamping piece, the second clamping part comprises a second clamping body and a second clamping piece, a first clamping piece fixing part is arranged on one side of the first clamping body facing the second clamping body, a second clamping piece fixing part is arranged on one side of the second clamping body facing the first clamping body, the first clamping piece is mounted on the first clamping piece fixing part, and the second clamping piece is mounted on the second clamping piece fixing part.

4. The septum winding mechanism of claim 3, wherein, The first connecting rod assembly comprises a first connecting rod and a second connecting rod, one end of the first clamping piece fixing part penetrates into the mounting space and is connected with one end of the first connecting rod, one end of the second clamping piece fixing part penetrates into the mounting space and is connected with one end of the second connecting rod, and the other end of the first connecting rod and the other end of the second connecting rod are connected with the driving assembly.

5. The septum winding mechanism of claim 4, wherein, The device further comprises a second connecting rod assembly, two ends of the second connecting rod assembly are connected with the first clamping part and the second clamping part respectively.

6. The septum winding mechanism of claim 5, wherein, One side of the first clamping body facing the second clamping body is further provided with a first connecting rod fixing part, one side of the second clamping body facing the first clamping body is further provided with a second connecting rod fixing part, the second connecting rod assembly comprises a third connecting rod and a fourth connecting rod, one end of the third connecting rod is connected with the first connecting rod fixing part, the other end of the third connecting rod is connected with the first clamping piece fixing part, one end of the fourth connecting rod is connected with the second connecting rod fixing part, and the other end of the fourth connecting rod is connected with the second clamping piece fixing part.

7. The septum winding mechanism of claim 6, wherein, The second connecting rod assembly is provided in multiple groups, each group comprises a third connecting rod and a fourth connecting rod, and each group of the second connecting rod assembly is arranged in an axial direction of the clamping assembly.

8. The septum winding mechanism of claim 4, wherein, The driving assembly comprises a guide rod, a wire bearing and a driving piece connected in sequence, the other end of the first connecting rod and the other end of the second connecting rod are connected with different positions of the guide rod in the axial direction, the driving piece can drive the wire bearing to move along one end of the guide rod and drive the guide rod to move towards the clamping assembly to make the first connecting rod assembly stretch.

9. The septum winding mechanism of claim 8, wherein, The driving assembly further comprises a reset piece, one end of the reset piece is connected with the guide rod, the other end of the reset piece is connected with an inner wall of the fixing seat, and the reset piece is used for resetting the guide rod to make the first connecting rod assembly retract.

10. A lithium battery winding apparatus, characterized by, The device comprises a diaphragm winding mechanism as claimed in any one of claims 1-9.

Images