Diaphragm clamping mechanism and diaphragm tail roll system

Abstract

The utility model relates to the technical field of diaphragm clamps, and discloses a diaphragm clamping mechanism and a diaphragm tail roll system.The diaphragm clamping mechanism comprises a rack, a diaphragm adsorption assembly and a pinch roll assembly, the pinch roll assembly is installed on the rack and comprises a driving part, a rotating shaft and a pinch roll connected with the rotating shaft, the driving part is connected with the rotating shaft, and the rotating shaft is connected with the pinch roll. The clamping roller is close to or away from the diaphragm adsorption assembly along with rotation of the rotating shaft, and the clamping roller is matched with the diaphragm adsorption assembly to clamp the diaphragm. The diaphragm clamping mechanism has the following technical effects that the diaphragm adsorption assembly is matched with the clamping roller rotating relative to the rack, the rotating clamping roller can clamp and fix the diaphragm, and meanwhile, the gravity center of the diaphragm clamping mechanism is lowered, so that the pole piece carrying assembly can avoid the position, and the speed of the battery manufacturing process is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm clamps, and particularly relates to a diaphragm clamping mechanism and a diaphragm tail winding system. Background Art

[0002] In the field of battery manufacturing, it usually involves process flows such as pole piece stacking, diaphragm cutting, and tail winding.

[0003] In these process flows, a diaphragm moving clamp is used to clamp the diaphragm after cutting and drive it to the next working position, the tail winding position, for tail winding, and a pole piece handling component is used to transfer the positive / negative pole pieces to the stacking platform for stacking. Since the cooperation between the pole pieces and the diaphragm is required during the stacking process, the pole piece handling component usually operates at the bottom of the diaphragm moving clamp, and the pole piece handling component must avoid the diaphragm moving clamp during operation to perform stacking.

[0004] The traditional diaphragm moving clamp adopts an up-and-down cylinder clamping mechanism, with a large overall frame. This results in an elevated center of gravity of the diaphragm moving clamp assembly, making the assembly bulky and difficult to speed up. Nowadays, with the increasing stacking speed of the stacking equipment, the speed of pole piece handling needs to be faster and faster, and the existing mechanism can no longer meet the requirement of speed increase.

[0005] Therefore, a diaphragm clamping mechanism with a concise and flexible structure plays an important role in improving the speed of the pole piece handling mechanism and the overall process speed. How to provide a diaphragm clamping mechanism to meet the requirements is an urgent problem for those in the field of the existing technology. Summary of the Utility Model

[0006] To solve the deficiencies of the existing technology, the utility model provides a diaphragm clamping mechanism and a diaphragm tail winding system, which realize clamping the diaphragm through the cooperation of a diaphragm adsorption component and a pinch roller that moves relative to the frame. Among them, the structure of the pinch roller assembly reduces the center of gravity of the diaphragm clamping mechanism, and at the same time is conducive to the avoidance of the pole piece handling component, realizing the speed increase of the battery manufacturing process.

[0007] The technical effects to be achieved by the utility model are realized through the following technical aspects:

[0008] In the first aspect, the utility model provides a diaphragm clamping mechanism, including

[0009] a frame;

[0010] a diaphragm adsorption component, installed at one end of the frame, for adsorbing the diaphragm; and,

[0011] The pinch roll assembly is installed on the frame and includes a driving member, a rotating shaft, and a pinch roll connected to the rotating shaft. The driving member is connected to the rotating shaft and is used to drive the rotating shaft to rotate. The pinch roll approaches or moves away from the diaphragm adsorption assembly as the rotating shaft rotates, and the pinch roll cooperates with the diaphragm adsorption assembly to clamp the diaphragm.

[0012] In some embodiments, the rotating shaft is disposed above the diaphragm adsorption assembly, and the pinch roll is close to the diaphragm adsorption assembly; fixing blocks for connecting with the rotating shaft are provided at both ends of the pinch roll.

[0013] In some embodiments, the diaphragm adsorption assembly includes at least one diaphragm suction plate and a diaphragm adsorption area formed on the diaphragm suction plate.

[0014] In some embodiments, the extending direction of the diaphragm adsorption area is the same as the extending direction of the diaphragm suction plate.

[0015] In some embodiments, the width of the diaphragm adsorption area is adapted to the width of the diaphragm.

[0016] In some embodiments, one side of the diaphragm suction plate is the initial side, the diaphragm suction plate is provided with a clamping portion, and the pinch roll moves between the initial side and the clamping portion as the rotating shaft rotates.

[0017] In some embodiments, the diaphragm suction plate is provided with an avoidance position on the moving path of the pinch roll.

[0018] In some embodiments, the rotating shaft penetrates through the frame and is connected to the pinch roll through the fixing block, and the length of the pinch roll is at least equal to the length of the diaphragm adsorption assembly.

[0019] In some embodiments, a pressure sensor is further included for detecting the pressure received by the diaphragm.

[0020] In a second aspect, the present invention further provides a diaphragm tail winding system, including a tail winding mechanism and the diaphragm clamping mechanism described in any one of the above, and the diaphragm sequentially passes through the diaphragm clamping mechanism and the tail winding mechanism.

[0021] In summary, the present invention has at least the following advantages:

[0022] 1. The diaphragm clamping mechanism provided by the present utility model uses a diaphragm adsorption component fixedly connected to the frame and pinch rollers that rotate relative to the frame to clamp the diaphragm. Compared with the traditional up-and-down cylinder clamping mechanism of equipment, the movable pinch rollers lower the overall center of gravity of the diaphragm clamping mechanism, making the operation of the diaphragm clamping mechanism more flexible, which is beneficial to the cooperation between the diaphragm clamping mechanism and other process mechanisms. For example, it is beneficial for the avoidance of the electrode sheet handling component, thereby improving the battery manufacturing speed. In addition, during the movement of the pinch rollers, they can also flatten the diaphragm.

[0023] 2. A diaphragm tail winding system provided by the present utility model includes a tail winding mechanism and a diaphragm clamping mechanism. Under the action of the diaphragm clamping mechanism, the diaphragm tail winding system improves work efficiency and at the same time ensures the flatness of the diaphragm during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the initial state of the diaphragm clamping mechanism of Embodiment 1 of the present utility model.

[0025] Figure 2 It is a schematic structural diagram of the clamping state of the diaphragm clamping mechanism of Embodiment 1 of the present utility model.

[0026] Figure 3 It is an enlarged schematic structural diagram of the diaphragm suction plate of the diaphragm clamping mechanism of Embodiment 1 of the present utility model.

[0027] Figure 4 It is a schematic structural diagram of the diaphragm clamping mechanism of Embodiment 2 of the present utility model.

[0028] Reference numerals in the drawings:

[0029] 100, frame;

[0030] 200, diaphragm adsorption component; 21, diaphragm suction plate; 22, diaphragm adsorption area; 23, avoidance position;

[0031] 300, pinch roller assembly; 31, driving member; 32, rotating shaft; 33, pinch roller; 34, fixing block;

[0032] 400, pressure sensor;

[0033] 500, mounting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are some but not all of the embodiments of the present utility model.

[0035] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0036] Example 1:

[0037] Please refer to the attached Figures 1-3 , this embodiment provides a diaphragm clamping mechanism, which has the advantages of low center of gravity, high flexibility and being conducive to smoothing the diaphragm, thereby further improving the overall process speed and effect.

[0038] Figure 1 The structural schematic diagram of the diaphragm clamping mechanism in the initial state is given. A diaphragm clamping mechanism includes a frame 100, and a diaphragm adsorption assembly 200 and a pinch roller assembly 300 installed on the frame 100. Specifically, the diaphragm adsorption assembly 200 is installed at one end of the frame 100 for facilitating the adsorption of the diaphragm. In this embodiment, the diaphragm adsorption assembly 200 is located at the bottom end of the frame 100, which is conducive to reducing the center of gravity of the diaphragm clamping mechanism and also facilitates the adsorption of the diaphragm.

[0039] The pinch roller assembly 300 is connected to the frame 100 and has high flexibility of movement. The pinch roller assembly 300 includes a driving member 31, a rotating shaft 32, and a pinch roller 33 connected to the rotating shaft 32. The driving member 31 is used to drive the rotating shaft 32 to rotate relative to the frame 100, so as to drive the pinch roller 33 to approach or move away from the diaphragm adsorption assembly 200 through the rotating shaft 32. During the process of the pinch roller 33 gradually approaching the diaphragm adsorption assembly 200, the pinch roller 33 can smooth the diaphragm adsorbed by the diaphragm adsorption assembly 200 to ensure the flatness of the diaphragm. When the pinch roller 33 abuts and cooperates with the diaphragm adsorption assembly 200, the pinch roller 33 and the diaphragm adsorption assembly 200 jointly clamp the diaphragm to facilitate processes such as cutting the diaphragm and subsequent tail winding.

[0040] Preferably, the rotating shaft 32 is arranged above the diaphragm adsorption assembly 200, fixing blocks 34 are provided at both ends of the pinch roller 33, and the pinch roller 33 is connected to the rotating shaft 32 through the fixing blocks 34, and the pinch roller 33 approaches the diaphragm adsorption assembly 200. In this embodiment, the rotating shaft 32 is as close as possible to the diaphragm adsorption assembly 200 to further ensure the reduction of the overall center of gravity of the diaphragm clamping mechanism. At the same time, the short distance between the rotating shaft 32 and the pinch roller 33 can enable the rapid movement of the pinch roller 33, improving the portability and flexibility of the diaphragm clamping mechanism, thereby realizing the speed increase of the diaphragm clamping mechanism and components of related process equipment.

[0041] Specifically, the diaphragm adsorption assembly 200 includes at least one diaphragm suction plate 21 and a diaphragm adsorption area 22 formed on the diaphragm suction plate 21. In some embodiments, several diaphragm suction plates 21 may be provided at the bottom of the frame 100, and the diaphragm suction plates 21 together form a complete diaphragm adsorption area 22. In other embodiments, one diaphragm suction plate 21 may be provided at the bottom of the frame 100, and several suction ports are provided on one diaphragm suction plate 21, and the suction ports together form a diaphragm adsorption area 22. In this embodiment, one diaphragm suction plate 21 is provided at the bottom of the frame 100, the diaphragm suction plate 21 is provided with a single suction port, and the suction port forms the diaphragm adsorption area 22.

[0042] Further, the extending direction of the diaphragm adsorption area 22 is the same as that of the diaphragm suction plate 21. Specifically, taking the direction of diaphragm movement forward as the first direction and the width direction of the diaphragm as the second direction, the first direction is perpendicular to the second direction. The diaphragm suction plate 21 extends along the second direction, and the extending direction of the diaphragm adsorption area 22 is the same as that of the diaphragm suction plate 21 to ensure that the diaphragm clamping mechanism can clamp the diaphragm, and at the same time, it is also helpful to adjust the pressure on the diaphragm. Specifically, please refer to Figure 1 , during operation, the diaphragm moves along the first direction. In this embodiment, the diaphragm clamping mechanism is provided with one diaphragm suction plate 21, and both the diaphragm suction plate 21 and the diaphragm adsorption area 22 extend along the second direction. In other embodiments, the diaphragm clamping mechanism may be provided with several diaphragm suction plates 21 extending along the second direction. Among them, the diaphragm suction plates 21 extending along the second direction refer to several diaphragm suction plates 21 arranged along the second direction. Correspondingly, the diaphragm adsorption area 22 formed by the diaphragm suction plates 21 extends along the second direction. It can be understood that on the basis that the diaphragm suction plate 21 and the diaphragm adsorption area 22 extend along the second direction, the diaphragm suction plate 21 and the diaphragm adsorption area 22 may also extend along the first direction.

[0043] Further, the width of the diaphragm adsorption area 22 is adapted to the width of the diaphragm, that is, the width of the diaphragm adsorption area in the second direction is greater than or equal to the width of the diaphragm, so as to improve the stability when adsorbing the diaphragm, and at the same time, it is also helpful for the subsequent pinch roller assembly 300 to fully smooth and arrange the diaphragm.

[0044] Further, one side of the diaphragm suction plate 21 is the initial side of the pinch roller 33, and the diaphragm suction plate 21 is provided with a clamping portion. As the rotating shaft 32 rotates, the pinch roller 33 moves between the initial side and the clamping portion. Figure 2 The structural schematic diagram of the diaphragm clamping mechanism in the clamping state is given. With reference to Figure 1 and Figure 2, in this embodiment, the initial side and the clamping part are distributed in the first direction. At the initial side, the pinch roller 33 does not abut against the diaphragm adsorption area 22 of the diaphragm suction plate 21. When it is necessary to clamp the diaphragm, the pinch roller 33 moves from the initial side to the clamping part along with the rotation of the rotating shaft 32. During this process, the pinch roller 33 gradually abuts against the diaphragm suction plate 21 and finally cooperates with the diaphragm suction plate 21 at the clamping part to clamp the diaphragm. It should be noted that during the movement of the pinch roller 33, the pinch roller 33 contacts the diaphragm and smooths the diaphragm, reducing the wrinkles on the diaphragm.

[0045] Furthermore, in order to achieve the smoothing effect, the pinch roller 33 needs to ensure that it abuts against the diaphragm suction plate 21 as much as possible during the movement and finally forms a stable clamping structure. However, when the size of the diaphragm suction plate 21 is large, the movement process of the pinch roller 33 is easily blocked by the diaphragm suction plate 21. Therefore, the diaphragm suction plate 21 can also be provided with an avoidance position 23 on the movement path of the pinch roller 33. Figure 3 The partial structural schematic diagram of the diaphragm suction plate 21 is given. In this embodiment, the diaphragm suction plate 21 is provided with an avoidance position 23 at a position near the initial side and near the bottom end. Among them, the avoidance position 23 can be an arc surface or an inclined plane. The setting of the avoidance position 23 enables the pinch roller 33 to clamp with the diaphragm suction plate 21 as much as possible, and at the same time ensures the smooth flow of the process of the pinch roller 33 moving from the initial side to the clamping part.

[0046] In this embodiment, the frame 100 is integrally in a square frame structure, and the diaphragm adsorption assembly 200 is arranged at the bottom end of the frame 100 and is integrally arranged along the second direction. The rotating shaft 32 penetrates the frame 100 and is arranged above the diaphragm adsorption assembly 200, and both ends of the rotating shaft 32 are connected to the pinch roller 33 through fixing blocks 34. Among them, the length of the pinch roller 33 is at least equal to the length of the diaphragm adsorption assembly 200. Specifically, the length of the pinch roller 33 in the second direction at least covers the diaphragm adsorption area 22, so as to cover the width of the diaphragm and clamp the diaphragm completely.

[0047] The working process of the diaphragm clamping mechanism will be specifically described below:

[0048] The diaphragm suction plate 21 of the diaphragm adsorption assembly 200 sucks the diaphragm through the diaphragm adsorption area 22, and the driving member 31 drives the rotating shaft 32 to rotate, so that the pinch roller 33 moves until it jointly clamps the diaphragm with the diaphragm suction plate 21. The pinch roller 33 can also perform the operation of smoothing the diaphragm during the movement. After the diaphragm clamping mechanism clamps the diaphragm, the diaphragm is cut and transported to the tail winding station under the action of other equipment. At this time, the pinch roller 33 releases the diaphragm and rotates towards the initial side, and the diaphragm suction plate 21 is still in the state of sucking the diaphragm tightly, and the next station drives the diaphragm to wind. When there is not much remaining diaphragm, the driving member 31 works again to drive the pinch roller 33 to move to the clamping part and cooperate with the diaphragm suction plate 21 again to clamp the diaphragm again, so as to prevent the diaphragm suction plate 21 from not being able to suck the diaphragm.

[0049] Example 2:

[0050] The difference between this embodiment and Embodiment 1 is that in this embodiment, further structural optimization is made to the diaphragm clamping mechanism provided by the present utility model. The following will give a detailed description of the improvements, and for the same parts, please refer to Embodiment 1.

[0051] Figure 4 The schematic diagram of the diaphragm clamping mechanism of this embodiment is given. As Figure 4 shown, the diaphragm clamping mechanism further includes a pressure sensor 400. In this embodiment, the pressure sensor 400 is installed on the frame 100 for detecting the pressure exerted on the diaphragm. If the pressure when the diaphragm is adsorbed by the diaphragm adsorption assembly 200 is too small, wrinkles are likely to occur. When the pressure sensor 400 detects a decrease in pressure, it will transmit a signal to make the diaphragm clamping mechanism move in the direction of tightening the diaphragm relative to other devices, so as to ensure that wrinkles are not easily generated when the diaphragm is wound at the end.

[0052] Correspondingly, an installation part 500 is further provided on the frame 100, and the diaphragm clamping mechanism is movably installed on an external device through the installation part 500. The installation part 500 may include a movable bearing or other structures that can drive the diaphragm clamping mechanism to move relative to the external device. When the pressure is too large or too small, the diaphragm clamping mechanism moves relative to the external device through the installation part 500, so as to adjust the pressure exerted on the diaphragm to ensure the quality of the diaphragm.

[0053] Example 3:

[0054] Based on the above embodiments, this embodiment provides a diaphragm end-winding system, which includes an end-winding mechanism and the diaphragm clamping mechanism described in Embodiment 1 or Embodiment 2.

[0055] During the production process, the diaphragm passes through the diaphragm clamping mechanism and the end-winding mechanism in sequence, so as to realize process flows such as diaphragm cutting and end-winding. Among them, different from the way of using an upper and lower cylinder clamping mechanism for the diaphragm moving clamp in the prior art, the diaphragm clamping mechanism cooperates with the diaphragm adsorption assembly 200 and the pinch roller assembly 300 that can rotate relative to the frame 100, so that while the pinch roller assembly 300 realizes clamping and fixing the diaphragm, the center of gravity of the diaphragm clamping mechanism is reduced, and it is convenient for the pole piece handling assembly to avoid, which is beneficial to speeding up the battery manufacturing process.

[0056] In some embodiments, the diaphragm clamping mechanism can also move relative to the end-winding mechanism, and can approach or move away from the end-winding mechanism, so as to adjust the wrinkles of the diaphragm.

[0057] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0059] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0060] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being above, over and on the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0061] Although the description of the present utility model is made in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the spirit and scope of the appended claims.

Claims

1. A diaphragm clamping mechanism, characterized in that, including a frame (100); a diaphragm adsorption assembly (200), installed at one end of the frame (100) for adsorbing the diaphragm; and a pinch roller assembly (300), installed on the frame (100), including a driving member (31), a rotating shaft (32) and a pinch roller (33) connected to the rotating shaft (32), the driving member (31) is connected to the rotating shaft (32) for driving the rotating shaft (32) to rotate, the pinch roller (33) approaches or moves away from the diaphragm adsorption assembly (200) as the rotating shaft (32) rotates, and the pinch roller (33) cooperates with the diaphragm adsorption assembly (200) to clamp the diaphragm.

2. The diaphragm clamping mechanism according to claim 1, characterized in that, The rotating shaft (32) is arranged above the diaphragm adsorption assembly (200), and the pinch roller (33) approaches the diaphragm adsorption assembly (200); fixing blocks (34) for connecting with the rotating shaft (32) are arranged at both ends of the pinch roller (33).

3. The diaphragm clamping mechanism according to claim 1, characterized in that, The diaphragm adsorption assembly (200) at least includes a diaphragm suction plate (21) and a diaphragm adsorption area (22) formed on the diaphragm suction plate (21).

4. The diaphragm clamping mechanism according to claim 3, wherein, The extending direction of the diaphragm adsorption area (22) is the same as that of the diaphragm suction plate (21).

5. The diaphragm clamping mechanism according to claim 4, wherein, The width of the diaphragm adsorption area (22) is adapted to the width of the diaphragm.

6. The diaphragm clamping mechanism according to claim 4, wherein, One side of the diaphragm suction plate (21) is the initial side, the diaphragm suction plate (21) is provided with a clamping part, and the pinch roller (33) moves between the initial side and the clamping part as the rotating shaft (32) rotates.

7. The diaphragm clamping mechanism according to claim 6, wherein, The diaphragm suction plate (21) is provided with an avoidance position (23) on the moving path of the pinch roller (33).

8. The diaphragm clamping mechanism according to claim 2, characterized in that, The rotating shaft (32) penetrates through the frame (100) and is connected to the pinch roller (33) through the fixing block (34), and the length of the pinch roller (33) is at least equal to the length of the diaphragm adsorption assembly (200).

9. The diaphragm clamping mechanism according to any one of claims 1-8, characterized in that, It further includes a pressure sensor (400) for detecting the pressure received by the diaphragm.

10. A diaphragm tail winding system, characterized in that, It includes a tail winding mechanism and the diaphragm clamping mechanism according to any one of claims 1-9, and the diaphragm passes through the diaphragm clamping mechanism and the tail winding mechanism in sequence.

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