Gasket capable of realizing on-line adjustment of coating surface density

Abstract

The utility model discloses a gasket capable of realizing on-line adjustment of coating surface density, which belongs to the technical field of lithium battery manufacturing and comprises a U-shaped gasket body, an opening end of the gasket body faces a die head nozzle, a mounting hole is formed in the gasket body in a penetrating manner and is communicated with the opening end of the gasket body, and the gasket further comprises an adjustable gasket, the adjustable gasket penetrates through the mounting hole, and the outer wall of the adjustable gasket is in contact connection with the inner wall of the mounting hole. According to the mode, when the pump speed is fixed, the density of the coating surface can be adjusted through stretching and retracting of the adjustable gasket, and the closer the adjustable gasket is to the opening end of the gasket body, namely the closer the adjustable gasket is to a die head nozzle, the smaller the slurry flow is, and the lower the density of the coating surface is; the farther the adjustable gasket is away from the opening end of the gasket body, namely the farther the adjustable gasket is away from the die head nozzle, the larger the slurry flow is, and the higher the coating surface density is.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, in particular to a gasket capable of realizing online adjustment of coating surface density. Background Art

[0002] The slit coating process is an important process in the production of lithium batteries. The size of the coating surface density will affect the capacity of the lithium battery. If the coating surface density is too small, the battery capacity may not reach the nominal capacity. If the coating surface density is too large, it will easily cause waste of ingredients, and even cause safety hazards in serious cases.

[0003] Extrusion coating currently on the market usually adjusts the surface density by replacing different die structures, but the purchase and maintenance costs of the die are relatively high, which is not conducive to industrial production. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a gasket which can realize online adjustment of coating surface density.

[0005] The utility model proposes a gasket that can realize online adjustment of coating surface density, including a gasket body, which is U-shaped, with the open end of the gasket body facing the die nozzle, a mounting hole penetrating the gasket body, the mounting hole being connected to the open end of the gasket body, and also including an adjustable gasket, which passes through the mounting hole, and the outer wall of the adjustable gasket is in contact and connected with the inner wall of the mounting hole.

[0006] In the utility model, the gasket proposed can realize online adjustment of coating surface density, and the thickness of the adjustable gasket is smaller than the thickness of the gasket body.

[0007] In the utility model, the gasket which can realize online adjustment of coating surface density is provided, and the thickness of the gasket body is 0.5mm-3mm.

[0008] In the utility model, the gasket proposed can realize online adjustment of coating surface density, and the thickness of the gasket can be adjusted to 0.1mm-3mm.

[0009] In the utility model, the distances between any two adjacent groups of mounting holes of the gasket which can realize online adjustment of coating surface density are equal.

[0010] In the utility model, a gasket is proposed that can realize online adjustment of coating surface density. The gasket body includes a transverse part, and a group of L-shaped parts are fixedly connected at both ends of the transverse part. The transverse part and the L-shaped part have the same thickness, the top surface is flush, and the mounting hole starts on the transverse part.

[0011] In the utility model, the proposed gasket capable of realizing online adjustment of coating surface density has a mounting hole whose length direction is perpendicular to the length direction of the transverse portion.

[0012] In the utility model, the gasket which can realize online adjustment of coating surface density is provided, and one end of the L-shaped portion which faces the opening of the gasket body is chamfered.

[0013] In the utility model, a gasket is proposed which can realize online adjustment of coating surface density, and a gap between the adjustable gasket and the mounting hole is filled with a sealing component.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] When the pump speed is fixed, the coating surface density can be adjusted by extending and retracting the adjustable gasket: the closer the adjustable gasket is to the opening end of the gasket body, that is, the closer it is to the die nozzle, the less the slurry flow is and the lower the coating surface density is; the farther the adjustable gasket is from the opening end of the gasket body, that is, the farther it is from the die nozzle, the more the slurry flow is and the higher the coating surface density is.

[0016] Adjust the expansion and contraction of the adjustable gasket: remove the sealing assembly from the mounting hole, adjust the distance between the adjustable gasket and the open end of the gasket body, and after one end of several groups of adjustable gaskets is flush with the open end of the gasket body, reinstall the sealing assembly so that the sealing assembly fills the gap between the adjustable gasket and the mounting hole to prevent the slurry from leaking from the gap during the coating process, thereby ensuring a better coating effect.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 It is the front view of the utility model.

[0020] Figure numerals: 1. gasket body; 11. transverse portion; 12. L-shaped portion; 2. mounting hole; 3. adjustable gasket; 4. sealing assembly. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] Example 1

[0023] like Figure 1-2A gasket capable of realizing online adjustment of coating surface density shown includes a gasket body 1;

[0024] The gasket body 1 is U-shaped, with the open end of the gasket body 1 facing the die nozzle, and the gasket body 1 includes a transverse portion 11, and a group of L-shaped portions 12 are fixedly connected to both ends of the transverse portion 11, and a chamfer is provided at one end of the L-shaped portion 12 close to the open end of the gasket body 1. The length between the two groups of L-shaped portions 12, that is, the length of the open end of the gasket body 1, is the coating width.

[0025] The transverse portion 11 and the L-shaped portion 12 have the same thickness and flush top surfaces.

[0026] A plurality of mounting holes 2 are provided on the transverse portion 11, and mounting holes 2 are provided through the gasket body 1. One end opening of the mounting hole 2 is connected to the open end of the gasket body 1, and an adjustable gasket 3 is also included. The adjustable gasket 3 passes through the mounting hole 2, and the outer wall of the adjustable gasket 3 is in contact with the inner wall of the mounting hole 2. The gaps between the plurality of adjustable gaskets 3 and the mounting hole 2 are filled with sealing components 4.

[0027] Preferably, the length direction of the mounting hole 2 is perpendicular to the length direction of the transverse portion 11 .

[0028] Preferably, the distances between any two adjacent groups of mounting holes 2 are equal.

[0029] Preferably, several groups of sealing components 4 are connected as one.

[0030] Preferably, the thickness of the gasket body 1 is 0.5 mm to 3 mm, the thickness of the adjustable gasket 3 is 0.1 mm to 3 mm, and the thickness of the adjustable gasket 3 is smaller than the thickness of the gasket body 1 .

[0031] Preferably, the sealing device 4 can be made of a rubber sealing ring, a resin sealing ring, etc.

[0032] When the pump speed is fixed, the coating surface density can be adjusted by extending and retracting the adjustable gasket 3: the closer the adjustable gasket 3 is to the opening end of the gasket body 1, that is, the closer it is to the die nozzle, the smaller the slurry flow rate is and the lower the coating surface density is; the farther the adjustable gasket 3 is from the opening end of the gasket body 1, that is, the farther it is from the die nozzle, the greater the slurry flow rate is and the higher the coating surface density is.

[0033] Adjust the expansion and contraction of the adjustable gasket 3: remove the sealing assembly 4 from the mounting hole 2, adjust the distance between the adjustable gasket 3 and the open end of the gasket body 1, and after one end of several groups of adjustable gaskets 3 is flush with the open end of the gasket body 1, reinstall the sealing assembly 4 so that the sealing assembly 4 fills the gap between the adjustable gasket 3 and the mounting hole 2 to prevent the slurry from leaking from the gap during the coating process, thereby ensuring a better coating effect.

[0034] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gasket capable of realizing online adjustment of coating surface density, comprising a gasket body (1), characterized in that: The gasket body (1) is U-shaped, the open end of the gasket body (1) faces the die head nozzle, a mounting hole (2) is formed through the gasket body (1), the mounting hole (2) is communicated with the open end of the gasket body (1), and the gasket body (1) further comprises an adjustable gasket (3), the adjustable gasket (3) passes through the mounting hole (2), and the outer wall of the adjustable gasket (3) is in contact with the inner wall of the mounting hole (2).

2. The gasket capable of realizing online adjustment of coating surface density according to claim 1, characterized in that: The thickness of the adjustable gasket (3) is smaller than the thickness of the gasket body (1).

3. The gasket capable of realizing online adjustment of coating surface density according to claim 2, characterized in that: The thickness of the gasket body (1) is 0.5 mm to 3 mm.

4. The gasket capable of realizing online adjustment of coating surface density according to claim 2, characterized in that: The thickness of the adjustable gasket (3) is 0.1 mm to 3 mm.

5. The gasket capable of realizing online adjustment of coating surface density according to claim 1, characterized in that: The distances between any two adjacent groups of mounting holes (2) are equal.

6. The gasket capable of realizing online adjustment of coating surface density according to claim 1, characterized in that: The gasket body (1) comprises a transverse portion (11), and a group of L-shaped portions (12) are fixedly connected to the two ends of the transverse portion (11), the transverse portion (11) and the L-shaped portion (12) have the same thickness, the top surfaces are flush, and the mounting hole (2) starts on the transverse portion (11).

7. The gasket capable of realizing online adjustment of coating surface density according to claim 6, characterized in that: The length direction of the mounting hole (2) is perpendicular to the length direction of the transverse portion (11).

8. The gasket capable of realizing online adjustment of coating surface density according to claim 6, characterized in that: An end of the L-shaped portion (12) that opens toward the gasket body (1) is provided with a chamfer.

9. The gasket capable of realizing online adjustment of coating surface density according to claim 1, characterized in that: The gap between the adjustable gasket (3) and the mounting hole (2) is filled with a sealing component (4).

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