A folding device and lamination system for preventing material belt wrinkles

Abstract

The application relates to the technical field of battery production, and particularly discloses a folding device for preventing material belt from being wrinkled and a lamination system; wherein the folding device for preventing material belt from being wrinkled comprises an adsorption plate; the adsorption plate is provided with an adsorption surface for adsorbing a diaphragm; both ends of the adsorption surface along a first direction are provided with first air-avoiding grooves; the first direction is the width direction of the diaphragm; the length of the adsorption surface along the first direction is greater than or equal to the width of the diaphragm; in the scheme, the first air-avoiding grooves can form air avoidance with components such as a pressing knife, so that the adsorption surface is configured to cover the entire diaphragm along the width direction with the length greater than the width of the diaphragm, thereby achieving comprehensive adsorption of the diaphragm in the folding process, reducing the risk of wrinkles or corners at the edges of the diaphragm, and improving the manufacturing quality of the battery.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a folding device and stacking system for preventing material strip wrinkles. Background Technology

[0002] In the production of electrode batteries, a cell stacking process is required, which involves placing electrodes and separators sequentially on a stacking table to form a stack. During stacking, the separator is pulled back and forth on the stacking table by a separator traction mechanism to lay the separator. Taking a Z-type stack as an example, first, a positive electrode is placed, and the separator traction mechanism moves from left to right to lay a layer of separator on the positive electrode. Then, a negative electrode is placed, and the separator traction mechanism moves from right to left to lay a layer of separator on the negative electrode, and so on until the stacking is complete. After stacking is completed, the separator needs to be cut, and a new round of stacking begins after the stack is removed.

[0003] After the diaphragm is cut, the diaphragm on the diaphragm traction mechanism will have a free end that is not in contact with the stacking platform. In order to re-lay the diaphragm on the stacking platform, a folding mechanism is needed to fold the diaphragm onto the platform. During the operation, after connecting the free end of the diaphragm, the folding mechanism provides temporary fixation for the free end of the diaphragm. Then, as the diaphragm traction mechanism pulls the diaphragm to be laid on the stacking platform, the folding mechanism drives the diaphragm to flip, thus laying the diaphragm on the stacking platform.

[0004] In existing folding mechanisms, in order to avoid interference with components such as pressure knives on the stack during the folding process, the length of the folding mechanism is configured to be less than the length of the stack edge. This causes wrinkles or folds to form at both ends of the diaphragm in the width direction during the folding process, leading to cell quality problems. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a folding device and stacking system for preventing material tape wrinkles, in order to solve the problem of wrinkles or folds generated when the existing folding device flips the diaphragm.

[0006] To achieve the above technical objectives, this application provides a folding device for preventing material strip wrinkles, comprising: an adsorption plate;

[0007] The adsorption plate is provided with an adsorption surface for adsorbing the diaphragm;

[0008] The adsorption surface is provided with a first void groove at both ends along the first direction.

[0009] The first direction is the width direction of the diaphragm;

[0010] The length of the adsorption surface along the first direction is greater than or equal to the width of the diaphragm.

[0011] Furthermore, the adsorption plate can be flipped between an adsorption state and a folding state along the rotation axis;

[0012] The two sides of the adsorption surface along the second direction are the first side and the second side, respectively, and the second direction is perpendicular to the first direction;

[0013] The first edge is configured as the cutting edge when the diaphragm is cut.

[0014] Furthermore, the first side is closer to the axis of rotation than the second side.

[0015] Furthermore, the first side is configured to be flush with the edge of the stack in the folded state.

[0016] Furthermore, the adsorption surface has protrusions at both ends along the first direction on the side closest to the first edge;

[0017] The protrusion is provided with adsorption holes.

[0018] Furthermore, it also includes a connecting plate and a rotary drive component;

[0019] The two ends of the connecting plate are connected to the output end of the rotary drive component and the adsorption plate;

[0020] A second clearance groove is formed on the connecting plate between the output end of the rotary drive and the adsorption plate.

[0021] Furthermore, a third clearance groove is formed between the outer side of the adsorption plate along the second direction and the connecting plate.

[0022] Furthermore, it also includes a support frame;

[0023] The rotary drive component is mounted on the support frame.

[0024] Furthermore, it also includes a positioning reference component;

[0025] The positioning reference component is disposed on the support frame.

[0026] A second aspect of this application provides a stacking system including the folding device for preventing material strip wrinkles as described in any of the preceding claims.

[0027] As can be seen from the above technical solutions, this application provides a folding device and stacking system for preventing material tape wrinkles; wherein, the folding device for preventing material tape wrinkles includes: an adsorption plate; the adsorption plate is provided with an adsorption surface for adsorbing a diaphragm; a first clearance groove is provided at both ends of the adsorption surface along a first direction; the first direction is the width direction of the diaphragm; the length of the adsorption surface along the first direction is greater than or equal to the width of the diaphragm;

[0028] In this design, the first clearance groove can form a clearance with components such as the pressure knife, so that the adsorption surface is configured to have a length greater than the width of the separator and cover the entire separator along the width direction. This enables full adsorption of the separator during the folding process, reducing the risk of wrinkles or folds at the edge of the separator and improving the manufacturing quality of the battery. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of a folding device for preventing material strip wrinkles provided in an embodiment of this application under the superposition of adsorption and folding states;

[0031] Figure 2 A schematic diagram of a folding device for preventing material strip wrinkles provided in an embodiment of this application in an adsorption state;

[0032] Figure 3 Provided for the embodiments of this application Figure 2 A magnified view of a portion of the image;

[0033] Figure 4 Provided for the embodiments of this application Figure 1 A magnified view of a portion of the image;

[0034] Figure 5 A schematic diagram illustrating the folding process of a folding device for preventing material strip wrinkles provided in this application embodiment when the rotation axis is far from the first edge;

[0035] Figure 6 A schematic diagram illustrating the folding process of an anti-wrinkling tape folding device provided in this application embodiment when the rotation axis is close to the first edge;

[0036] Figure 7 A schematic diagram of a folding device for preventing material strip wrinkles provided in an embodiment of this application, which is flush with the edge of the stacking platform in the first folded state;

[0037] In the diagram: 10. Adsorption plate; 11. Adsorption surface; 12. First clearance groove; 13. Protrusion; 14. Adsorption hole; 20. Connecting plate; 21. Second clearance groove; 22. Third clearance groove; 30. Rotation drive component; 40. Support frame; 50. Positioning reference component; 60. Cutter; 101. First side; 102. Second side;

[0038] x-axis direction: first direction; y-axis direction: second direction; point a indicates: the edge of the free end of the diaphragm; point o indicates: the rotation axis of the adsorption plate; area b: the active area of ​​the pressure knife. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0040] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0042] Please see Figures 1 to 4 The present application provides a folding device for preventing material tape from wrinkling, comprising: an adsorption plate 10. The adsorption plate 10 is provided with an adsorption surface 11 for adsorbing a diaphragm; the adsorption plate 10 is connected to a vacuum generator so that the adsorption holes 14 on the adsorption surface 11 generate a vacuum suction force through the vacuum generator to adsorb the diaphragm.

[0043] First clearance grooves 12 are provided at both ends of the adsorption surface 11 along the first direction; the first direction is the width direction of the diaphragm, which can be... Figure 3 The x-axis direction in the diagram. The length of the adsorption surface 11 along the first direction is greater than or equal to the width of the membrane.

[0044] In this embodiment, the first clearance groove 12 can be used to avoid components such as the pressure knife. Taking the first clearance groove 12 as an example of avoiding the pressure knife, during operation, the first clearance groove 12 can prevent the adsorption plate 10 from interfering with the pressure knife during the flipping process. Therefore, the adsorption plate 10 does not need to remove the pressure knife first during the flipping process, allowing the pressure knife and the adsorption plate 10 to work synchronously.

[0045] Specifically, the adsorption plate 10 can rotate between an adsorption state and a folding state along the axis of rotation. In the adsorption state, the adsorption surface 11 faces upward and can adsorb the diaphragm above the adsorption surface 11. The folding state refers to the state after the folding process is completed, wherein the folding process is as follows: the adsorption surface 11 is folded over to flip the diaphragm onto the stack, and in the folding state, the adsorption surface 11 faces downward.

[0046] In one embodiment provided in this example, please refer to Figure 4 The pressing tool's active area can be Figure 4 Region b is located outside the adsorption surface during the adsorption state. During the folding state, region b is located within the first clearance groove 12. Generally, the use of the pressing knife includes vertical lifting and horizontal movement along a first direction. Through the first clearance groove 12, the use of the pressing knife and the folding process of the adsorption plate 10 do not interfere with each other. Therefore, the pressing knife and the adsorption plate 10 can move synchronously, achieving simultaneous diaphragm folding and pressing actions, effectively improving work efficiency.

[0047] Without the first clearance groove 12, the length of the adsorption plate 10 along the first direction is configured to be shorter than the width of the separator in order to avoid interference with the pressing knife. In this embodiment, the first clearance groove 12 allows the adsorption plate 10 to be configured such that its length along the first direction is greater than or equal to the width of the separator. This ensures that during the flipping process to the folded state, the adsorption plate 10 can fully press the separator, so that when the separator is flipped onto the stack, its entire width is pressed by the adsorption plate 10. This effectively reduces the risk of wrinkles or folds at the edges of the separator and improves the production quality of the battery.

[0048] For a more specific embodiment, please refer to Figures 1 to 6 The adsorption surface 11 has a first side 101 and a second side 102 on both sides along the second direction, and the second direction is perpendicular to the first direction; the first side 101 is configured as a cutting edge when the diaphragm is cut. The second direction can be... Figure 3 The y-axis direction in the diagram.

[0049] The cutting edge refers to the cutting of the diaphragm by the cutter 60 along the first edge 101 when the diaphragm is cut. When the cutter 60 is in contact with the first edge 101, the edge of the free end of the diaphragm after cutting is flush with the first edge 101.

[0050] In one embodiment, such as Figure 3 As shown, the adsorption surface 11 has protrusions 13 formed at both ends along the first direction on the side near the first edge 101; the protrusions 13 are provided with adsorption holes 14.

[0051] Specifically, when the first anti-cavity groove 12 is provided, a protrusion 13 will be formed on the adsorption surface 11. In this embodiment, an adsorption hole 14 is provided on the protrusion 13 to adsorb the edge area in the width direction of the diaphragm, so as to further improve the fixing effect of the diaphragm in the adsorption state and during the folding process, and reduce the risk of wrinkles and folds in the diaphragm during the film stretching, cutting and folding processes.

[0052] In one embodiment, the first side 101 is closer to the axis of rotation than the second side 102.

[0053] Specifically, please refer to Figure 5 ,exist Figure 5 In the diagram, point O indicates the rotation axis of the adsorption plate 10; point a indicates the edge position of the free end of the diaphragm. When the rotation axis is located in the middle of the adsorption plate 10 along the second direction, that is, when the distances of the first side 101 and the second side 102 to the rotation axis are equal, after the adsorption plate 10 is flipped, the edge of the free end of the diaphragm covering the stack is far from the stack.

[0054] When the first side 101 is closer to the axis of rotation than the second side 102, please refer to Figure 6 When point O is closer to the first side 101, after the adsorption plate 10 is flipped, the free end edge of the diaphragm covering the stack is closer to the stack, thereby reducing the waste of the diaphragm.

[0055] It should be noted that after flipping, the distance between point a and the stack is also related to the distance between the adsorption plate 10 and the stack in the adsorption state. In an ideal state, the distance between the edge of the adsorption plate 10 and the stack in the adsorption state is the width of the cutter 60, that is, the distance between the first side 101 and the edge of the stack is the width of the cutter 60, which allows the cutter 60 to extend between the first side 101 and the stack to cut the diaphragm. At the same time, after flipping, the distance between point a and the edge of the stack is closer.

[0056] In one embodiment, see Figure 7 The first side 101 is configured to be flush with the edge of the stack when folded.

[0057] Specifically, since the cut diaphragm is flush with the first side 101, the first side 101 being flush with the edge of the stack in the folded state allows the diaphragm to align with the stack, improving the stacking quality.

[0058] In application, configuring the first side 101 to be flush with the edge of the stack in the folded state can be, for example, by setting the rotation axis of the adsorption plate 10 at the midpoint between the first side 101 and the edge of the stack.

[0059] In one embodiment, the anti-wrinkle folding device further includes a connecting plate 20 and a rotary drive 30; the two ends of the connecting plate 20 are connected to the output end of the rotary drive 30 and the adsorption plate 10; a second clearance groove 21 is formed on the connecting plate 20 between the output end of the rotary drive 30 and the adsorption plate 10.

[0060] In this embodiment, the connecting plate 20 can be configured as a curved plate. The second clearance groove 21 avoids components such as the vision assembly, making it easier for the vision assembly to align with the adsorption plate 10.

[0061] In a more specific embodiment, a third clearance groove 22 is formed between the outer side of the adsorption plate 10 along the second direction and the connecting plate 20.

[0062] Specifically, because a second clearance groove 21 is formed on the connecting plate 20, the connecting plate 20 is located away from the rotation axis relative to the adsorption plate 10, that is, the connecting plate 20 is located on the outside relative to the adsorption plate 10. The third clearance groove 22 can avoid adjacent components of the stack.

[0063] In one embodiment, a support frame 40 is further included; a rotary drive 30 is disposed on the support frame 40. The rotary drive 30 may be a rotary motor.

[0064] In one embodiment, a positioning reference component 50 is also included; the positioning reference component 50 is disposed on the support frame 40.

[0065] The positioning reference component 50 can be set below the second clearance slot 21 to facilitate the vision component to collect positioning data.

[0066] A second aspect of this application provides a stacking system including the anti-wrinkling folding device of any of the above-mentioned materials.

[0067] Specifically, the stacking system may also include a stacking platform, a cutter 60, and a pressure cutter; a folding device is located beside the stacking platform; the cutter 60 is located between the stacking platform and the adsorption plate 10. After stacking, the adsorption plate 10 can adsorb the diaphragm, while the pressure cutter presses the stacked sheets together, and the cutter 60 cuts the diaphragm between the pressure cutter and the adsorption plate 10 and then retracts it; after the stacked sheets are removed, the adsorption plate 10 can be flipped to lay the diaphragm on the stacking platform, and then the pressure cutter presses the diaphragm together.

[0068] The above are merely preferred embodiments of this application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the foregoing examples or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A folding device for preventing fabric from wrinkling, characterized in that, include: Adsorption plate (10); The adsorption plate (10) is provided with an adsorption surface (11) for adsorbing the diaphragm. The adsorption surface (11) is provided with a first clearance groove (12) at both ends along the first direction. The first direction is the width direction of the diaphragm; The length of the adsorption surface (11) along the first direction is greater than or equal to the width of the diaphragm.

2. The anti-wrinkling folding device for the material strip according to claim 1, characterized in that, The adsorption plate (10) can be flipped between an adsorption state and a folding state along the rotation axis; The adsorption surface (11) has a first side (101) and a second side (102) on both sides along the second direction, and the second direction is perpendicular to the first direction; The first edge (101) is configured as the cutting edge when the diaphragm is cut.

3. The anti-wrinkling folding device for the material strip according to claim 2, characterized in that, The first side (101) is closer to the axis of rotation than the second side (102).

4. The anti-wrinkling folding device for the material strip according to claim 3, characterized in that, The first side (101) is configured to be flush with the edge of the stack in the folded state.

5. The anti-wrinkling folding device for the material strip according to claim 2, characterized in that, The adsorption surface (11) has protrusions (13) formed at both ends along the first direction on the side close to the first edge (101). The protrusion (13) is provided with an adsorption hole (14).

6. The anti-wrinkling folding device for the material strip according to claim 2, characterized in that, It also includes a connecting plate (20) and a rotary drive (30); The two ends of the connecting plate (20) are connected to the output end of the rotary drive (30) and the adsorption plate (10); A second clearance groove (21) is formed on the connecting plate (20) between the output end of the rotary drive (30) and the adsorption plate (10).

7. The anti-wrinkling folding device for material strips according to claim 6, characterized in that, A third clearance groove (22) is formed between the outer side of the adsorption plate (10) along the second direction and the connecting plate (20).

8. The anti-wrinkling folding device for the material strip according to claim 6, characterized in that, It also includes a support frame (40); The rotary drive (30) is disposed on the support frame (40).

9. The anti-wrinkling folding device for material strips according to claim 8, characterized in that, It also includes a positioning reference component (50); The positioning reference component (50) is disposed on the support frame (40).

10. A stacking system, characterized in that, The folding device includes the anti-wrinkling material strip as described in any one of claims 1 to 9.

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