Coating gasket and coating equipment

Abstract

The utility model relates to the technical field of slurry coating, in particular to a coating gasket and coating equipment, the coating gasket comprises a gasket body and a stress weakening part, the gasket body comprises a first edge section, a middle section and a second edge section, and the first edge section and the second edge section are respectively arranged at two opposite ends of the middle section; the stress weakening part is arranged at the joint of the first edge section and the middle section and / or the joint of the second edge section and the middle section and used for weakening extrusion stress or tensile stress between the first edge section and / or the second edge section and the middle section when the first edge section and the second edge section are relatively close to or away from each other. By arranging the weakening part, the extrusion stress or the tensile stress between the first edge section and / or the second edge section and the middle section can be reduced, so that the gasket opening between the first edge section and the second edge section is adjusted by enabling the first edge section and the second edge section to be relatively close to or away from each other; and the coating gasket of one model is provided with a gasket opening with a certain fine adjustment range.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry coating, in particular to a coating gasket and a coating device. Background Art

[0002] During the coating process, the purpose of the gasket is to make the discharge effect of the upper and lower lips of the coating die head to be coated according to the required coating effect. It involves the coordination and design of key parameters such as coating width, thickness difference between the middle and edge of the coating, width of the peeling zone at the coating edge, surface density, pump speed when the die head discharges the material, and the gap between the lip and the coating back roller.

[0003] Since gaskets of different models are not completely interchangeable, and the fluid surface tension of incoming slurries in different viscosity states is different, the required gasket opening size details are different, and gaskets cannot be rushed out on site in a short time. Usually, three sets of gaskets for coating pole pieces of one model are required, and the other two sets are fine-tuning spare parts, so that they can be replaced in time when the surface density, thickness, extreme difference or stripping area are qualified, but the coating width is too large or too small.

[0004] The multiple development of spare parts not only wastes production costs, but also wastes time and slurry costs due to the disassembly and replacement of spare gaskets and line stoppage. Utility Model Content

[0005] The utility model provides a coating gasket and a coating device, which are used to solve the problem in the prior art that the traditional gasket cannot fine-tune the opening size and needs to be replaced back and forth, resulting in waste of production cost, time cost and slurry cost.

[0006] In one aspect, the utility model provides a coated gasket, comprising:

[0007] The gasket body comprises a first side section, a middle section and a second side section, wherein the first side section and the second side section are respectively arranged at two opposite ends of the middle section;

[0008] The stress weakening portion is arranged at the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment, and is used to weaken the compressive stress or tensile stress between the first side segment and / or the second side segment and the middle segment when the first side segment and the second side segment are relatively close or relatively far away.

[0009] According to the coated gasket provided by the utility model, the stress weakening portion is configured as a first curved surface structure;

[0010] And / or, the stress weakening portion is configured as a first notch structure.

[0011] According to the coating gasket provided by the utility model, the first curved surface structure is a cylindrical wall that is recessed toward the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment;

[0012] The first notch structure is a first V-shaped groove opened on the cylindrical wall.

[0013] The coated gasket provided by the utility model also includes a rebound portion, which is arranged at the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment and on the side opposite to the stress weakening portion, and is used to provide the rebound force required for resetting the first side segment and the second side segment.

[0014] According to the coating gasket provided by the utility model, the rebound portion is configured as a second curved surface structure;

[0015] And / or, the rebound portion is configured as a second notch structure.

[0016] According to the coating gasket provided by the utility model, the second curved surface structure is a cylindrical body that is convex away from the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment;

[0017] The second notch structure is a second V-shaped groove formed on the cylindrical body.

[0018] The coating gasket provided by the utility model further includes an adjustment component, which is connected to the first side segment and / or the second side segment and is used to adjust the distance between the first side segment and the second side segment.

[0019] According to the coating gasket provided by the utility model, the adjustment component includes:

[0020] A pull ear connected to the first side section and / or the second side section and provided with an insertion hole;

[0021] The adjusting block is wedge-shaped and has a small head end and a large head end. The width of the small head end is smaller than the width of the insertion hole, and the width of the large head end is larger than the width of the insertion hole. The width of the adjusting block gradually increases from the small head end to the large head end.

[0022] The adjusting block is used to slide along the inner wall of the jack, so that the side of the adjusting block away from the gasket body abuts against the inner wall of the jack, and the first side segment and / or the second side segment are stretched in a direction away from the middle segment;

[0023] The adjustment block is provided with a scale ruler in the direction from the small end to the large end.

[0024] According to the coating gasket provided by the utility model, strip holes are respectively opened on the first side section and the second side section, and the length direction of the strip holes is parallel to the length direction of the middle section.

[0025] On the other hand, the utility model also provides a coating device, including the coating gasket as described above.

[0026] The beneficial effects of the utility model are as follows:

[0027] The coated gasket of the utility model is provided with a weakening portion at the connection between the first side segment and the middle segment and / or at the connection between the second side segment and the middle segment. The weakening portion is used to weaken the extrusion stress or tensile stress between the first side segment and / or the second side segment and the middle segment when the first side segment and the second side segment are relatively close to or relatively far away from each other.

[0028] By setting the weakened portion, the extrusion stress or tensile stress between the first side segment and / or the second side segment and the middle segment can be reduced. Since the first side segment and the second side segment are respectively connected to the two ends of the middle segment, the distance between the first side segment and the second side segment can be adjusted by controlling the deformation degree of the first side segment and / or the second side segment and the middle segment, that is, the gasket opening between the first side segment and the second side segment can be adjusted, so that a model of coating gasket has a certain fine-tuning range, and it is not necessary to replace the coating gasket spare parts to adapt to the situation where the coating width is too large or too small. It saves production costs and time costs, and also avoids the waste of slurry when replacing the coating gasket.

[0029] The coating equipment provided by the utility model includes the coating gasket of the utility model, and thus includes all the above advantages of the coating gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 The structure of the coating gasket provided by the embodiment of the utility model is schematically shown Figure 1 ;

[0032] Figure 2 The structure of the coating gasket provided by the embodiment of the utility model is schematically shown Figure 2 ;

[0033] Figure 3 It is a structural diagram of the adjustment block.

[0034] Reference numerals:

[0035] 100-gasket body, 110-first side section, 120-middle section, 130-second side section, 200-stress weakening portion, 210-first curved surface structure, 220-first notch structure, 300-rebound portion, 310-second curved surface structure, 320-second notch structure, 400-adjustment component, 410-pull ear, 411-jack, 420-adjustment block, 421-small head end, 422-large head end, 500-strip hole. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Die: The coating process uses a die to evenly disperse the slurry and let it flow out through the lip of the die.

[0038] Coating: A process in the lithium battery industry in which the slurry is evenly applied to the surface of the foil through a die head.

[0039] Gasket opening: The place where the slurry designed to coat the target width can flow out. The slurry in the non-opening area cannot flow out of the die head.

[0040] Combine the following Figure 1-Figure 3 , describing the coated gasket provided in an embodiment of the utility model.

[0041] Specifically, the coated gasket includes a gasket body 100 and a stress weakening portion 200 .

[0042] The gasket body 100 includes a first side segment 110, a middle segment 120 and a second side segment 130, and the first side segment 110 and the second side segment 130 are respectively arranged at opposite ends of the middle segment 120. The stress weakening portion 200 is arranged at the connection between the first side segment 110 and the middle segment 120 and / or the connection between the second side segment 130 and the middle segment 120, and the stress weakening portion 200 is used to weaken the extrusion stress or tensile stress between the first side segment 110 and / or the second side segment 130 and the middle segment 120 when the first side segment 110 and the second side segment 130 are relatively close to or relatively far away from each other.

[0043] Preferably, the first side segment 110, the second side segment 130 and the middle segment 120 are made of metal and are made of an integrated molding process. On the one hand, since the metal itself can produce a certain elastic deformation, and therefore the first side segment 110, the second side segment 130 and the middle segment 120 are made of metal, it is possible to allow a certain deformation between the first side segment 110, the second side segment 130 and the middle segment 120, so that the spacing between the first side segment 110 and the second side segment 130 (i.e., the gasket opening) can be maintained within a fine-tuning range, so that the gasket no longer needs a spare plate with only a fine-tuning difference. On the other hand, the metal has a certain deformation recovery ability, which can provide a good deformation basis for the first side segment 110 and the second side segment 130 to be reset after stretching, so that the gasket opening can be switched within a similar value range for repeated use.

[0044] Optionally, there is one stress weakening portion 200, for example, the stress weakening portion 200 is arranged at the connection between the first side segment 110 and the middle segment 120 or at the connection between the second side segment 130 and the middle segment 120, and the first side segment 110 and the second side segment 130 are made relatively close or relatively far away from each other by squeezing or stretching the first side segment 110 or the second side segment 130, thereby achieving fine-tuning of the gasket opening.

[0045] Optionally, there are two stress weakening portions 200, for example, the two stress weakening portions 200 are respectively arranged at the connection between the first side segment 110 and the middle segment 120 and at the connection between the second side segment 130 and the middle segment 120, and the first side segment 110 and the second side segment 130 are made relatively close or relatively far away from each other by simultaneously squeezing or stretching the first side segment 110 and the second side segment 130, thereby achieving fine-tuning of the gasket opening.

[0046] By using the technical solution of this embodiment, by setting the stress weakening part 200 at the connection between the first side segment 110 and the middle segment 120 and / or the connection between the second side segment 130 and the middle segment 120, the extrusion stress or tensile stress between the first side segment 110 and / or the second side segment 130 and the middle segment 120 can be reduced. Since the first side segment 110 and the second side segment 130 are respectively connected to the two ends of the middle segment 120, the distance between the first side segment 110 and the second side segment 130 can be adjusted by controlling the deformation degree of the first side segment 110 and / or the second side segment 130 and the middle segment 120, that is, the gasket opening between the first side segment 110 and the second side segment 130 can be adjusted, so that a model of coating gasket has a certain fine-tuning range, and it is not necessary to replace the coating gasket spare parts to adapt to the situation where the coating width is too large or too small. It saves production costs and time costs, and also avoids the waste of slurry when replacing the coating gasket.

[0047] In some embodiments provided by the present invention, the stress weakening portion 200 is configured as a first curved surface structure 210 ; and / or, the stress weakening portion 200 is configured as a first notch structure 220 .

[0048] Optionally, a first curved surface structure 210 is respectively provided at the inner connection between the first side segment 110, the second side segment 130 and the middle segment 120, and the first curved surface structure 210 is used to smoothly connect the first side segment 110 and the middle segment 120, and the second side segment 130 and the middle segment 120, thereby avoiding the formation of a turning connection surface between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and avoiding local stress concentration, thereby improving the adjustable range of the angle between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and reducing the risk of fracture due to stress concentration between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120.

[0049] Optionally, a first notch structure 220 is respectively provided at the connection between the first side segment 110, the second side segment 130 and the middle segment 120. By providing the first notch structure 220, an extrusion or stretching margin is provided between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, thereby increasing the adjustable range of the angle between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and reducing the risk of fracture due to stress concentration between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120.

[0050] Optionally, a first curved surface structure 210 and a first notch structure 220 are respectively provided at the connection between the first side segment 110, the second side segment 130 and the middle segment 120, so as to further improve the adjustable range of the angle between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and reduce the risk of fracture due to stress concentration between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120.

[0051] In some embodiments provided by the present invention, the first curved surface structure 210 is a cylindrical wall recessed toward the connection between the first side segment 110 and the middle segment 120 and / or the connection between the second side segment 130 and the middle segment 120; the first notch structure 220 is a first V-shaped groove opened on the cylindrical wall.

[0052] Optionally, a concave cylindrical wall is provided at the connection between the first side segment 110 and the middle segment 120 and at the connection between the second side segment 130 and the middle segment 120 .

[0053] Preferably, the end face of the cylindrical wall is a 3 / 4 arc, one end of the cylindrical wall is connected to the first side segment 110 or the second side segment 130, the other end of the cylindrical wall is connected to the inner wall of the second side segment 130, and a first V-shaped groove is provided in the middle of the cylindrical wall, the notch of the first V-shaped groove faces the center of the arc where the cylindrical wall is located. Such an arrangement can increase the adjustable range of the angle between the first side segment 110, the second side segment 130 and the middle segment 120, and at the same time can reduce the minimum pulling force required to pull the first side segment 110 and the second side segment 130, and reduce the difficulty of adjusting the gasket opening.

[0054] In some embodiments provided by the utility model, the coating gasket further includes a rebound portion 300, which is arranged at the connection between the first side segment 110 and the middle segment 120 and / or the connection between the second side segment 130 and the middle segment 120 and on the side opposite to the stress weakening portion 200, and the rebound portion 300 is used to provide the rebound force required for the first side segment 110 and the second side segment 130 to reset. By arranging the rebound portion 300 on the side opposite to the stress weakening portion 200, the deformation recovery ability of the first side segment 110 and the second side segment 130 is improved, and a good rebound basis is provided for the first side segment 110 and the second side segment 130 to reset after stretching, so that the gasket opening can be switched within a similar value range for repeated use.

[0055] In some embodiments provided by the present invention, the rebound portion 300 is configured as a second curved surface structure 310 ; and / or the rebound portion 300 is configured as a second notch structure 320 .

[0056] Optionally, a second curved surface structure 310 is respectively provided at the outer connection between the first side segment 110, the second side segment 130 and the middle segment 120, and the first side segment 110 and the middle segment 120 are smoothly connected through the first curved surface structure 210, thereby enhancing the resilience of the first side segment 110 and the second side segment 130 against multiple deformations to ensure that the coated gasket can be reused.

[0057] Optionally, a second notch structure 320 is respectively provided at the outer connection between the first side segment 110, the second side segment 130 and the middle segment 120. By providing the second notch structure 320, an extrusion or stretching margin is provided between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, thereby increasing the adjustable range of the angle between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and reducing the risk of fracture due to stress concentration between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120.

[0058] Optionally, a second curved surface structure 310 and a second notch structure 320 are respectively provided at the outer connection between the first side segment 110, the second side segment 130 and the middle segment 120, so as to further improve the adjustable range of the angle between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120, and reduce the risk of fracture due to stress concentration between the first side segment 110 and the middle segment 120, and between the second side segment 130 and the middle segment 120.

[0059] In some embodiments provided by the present invention, the second curved surface structure 310 is a cylindrical body protruding away from the connection between the first side segment 110 and the middle segment 120 and / or the connection between the second side segment 130 and the middle segment 120; the second notch structure 320 is a second V-shaped groove opened on the cylindrical body.

[0060] Optionally, a convex cylindrical body is formed at the outer connection of the first side segment 110, the second side segment 130 and the middle segment 120. One side of the cylindrical body is connected to the outer wall of the first side segment 110 or the second side segment 130, and the other side of the cylindrical wall is connected to the outer wall of the second side segment 130. A first V-shaped groove is provided in the middle of the cylindrical body, and the notch of the first V-shaped groove is away from the center of the cylindrical body. On the one hand, since the arc structure of the cylindrical body has a certain deformation recovery force, it can provide a rebound force for the first side segment 110 and the second side segment 130 to recover after deformation. On the other hand, by providing the first V-shaped groove in the middle of the cylindrical body, part of the stress at the connection between the first side segment 110 and the second side segment 130 and the outer wall of the middle segment 120 during the deformation process can be eliminated, thereby reducing the minimum pulling force required to pull the first side segment 110 and the second side segment 130, and reducing the difficulty of adjusting the gasket opening.

[0061] In some embodiments provided by the present invention, an adjustment component 400 is further included. The adjustment component 400 is connected to the first side segment 110 and / or the second side segment 130 and is used to adjust the distance between the first side segment 110 and the second side segment 130 .

[0062] Optionally, a group of adjustment components 400 are symmetrically arranged on the first side segment 110 and the second side segment 130, respectively. With such an arrangement, the first side segment 110 and the second side segment 130 can be stretched or squeezed from both sides at the same time, so that the first side segment 110 and the second side segment 130 are synchronously moved closer to or farther away from each other, thereby facilitating the adjustment of the gasket opening size.

[0063] In some embodiments provided by the utility model, the adjustment component 400 includes a pull ear 410 and an adjustment block 420, wherein the pull ear 410 is connected to the first side segment 110 and / or the second side segment 130, and a plug hole 411 is provided on the pull ear 410. The adjustment block 420 is wedge-shaped, and has a small end 421 and a large end 422. The width of the small end 421 is smaller than the width of the plug hole 411, and the width of the large end 422 is larger than the width of the plug hole 411. The width of the adjustment block 420 gradually increases from the small end 421 to the large end 422. The adjustment block 420 is used to slide along the inner wall of the plug hole 411, so that the side of the adjustment block 420 away from the gasket body 100 is against the inner wall of the plug hole 411, and the first side segment 110 and / or the second side segment 130 are stretched in a direction away from the middle segment 120.

[0064] After the gasket is installed on the die head, the adjustment block 420 is inserted into the insertion hole 411, and one side of the adjustment block 420 can be against the die head. The adjustment block 420 slides along the inner wall of the insertion hole 411, so that the other side of the adjustment block 420 is against the inner wall of the insertion hole 411. Since the width of the adjustment block 420 gradually increases from the small end 421 to the large end 422, the extrusion force between the adjustment block 420 and the die head reacts to the inner wall of the insertion hole 411 during the sliding process of the adjustment block 420 along the inner wall of the insertion hole 411, so that the other side of the adjustment block 420 is against the inner wall of the insertion hole 411, and the first side segment 110 and the second side segment 130 are pulled outward, so that the distance between the first side segment 110 and the second side segment 130 (i.e., the gasket opening) is increased. In addition, since one side of the adjusting block 420 always contacts the die head during the sliding process of the adjusting block 420 along the inner wall of the inserting hole 411 , the distance between the first side segment 110 and the second side segment 130 can be stably increased.

[0065] A scale ruler is provided on the adjustment block 420 from the small end 421 to the large end 422 , so as to achieve the effect of quantitatively stretching the first side segment 110 and the second side segment 130 through the adjustment block 420 and accurately increasing the gasket opening.

[0066] In some embodiments provided by the present invention, a strip hole 500 is respectively provided on the first side segment 110 and the second side segment 130, and the length direction of the strip hole 500 is parallel to the length direction of the middle segment 120. By providing the strip hole 500, the positioning post passes through the strip hole 500, and when the first side segment 110 and the second side segment 130 are relatively far away or close, the strip hole 500 can provide a movement margin for the positioning post in the strip hole 500.

[0067] On the other hand, the utility model also provides a coating device, including the coating gasket in the above embodiment.

[0068] It should be noted that the coating equipment includes the coating gasket, which also includes all the advantages of the coating gasket mentioned above, which will not be repeated here.

[0069] In the description of the present invention, 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.

[0070] 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.

[0071] 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.

[0072] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coated gasket, characterized in that: include: The gasket body comprises a first side section, a middle section and a second side section, wherein the first side section and the second side section are respectively arranged at two opposite ends of the middle section; A stress weakening portion is arranged at the connection between the first side segment and the middle segment and / or at the connection between the second side segment and the middle segment, and is used to weaken the compressive stress or tensile stress between the first side segment and / or the second side segment and the middle segment when the first side segment and the second side segment are relatively close to or relatively far away from each other.

2. The coating gasket according to claim 1, characterized in that: The stress weakening portion is configured as a first curved surface structure; And / or, the stress weakening portion is configured as a first notch structure.

3. The coating gasket according to claim 2, characterized in that: The first curved surface structure is a cylindrical wall that is recessed toward the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment; The first notch structure is a first V-shaped groove opened on the cylindrical wall.

4. The coating gasket according to claim 2, characterized in that: It also includes a rebound portion, which is arranged at the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment and on the side opposite to the stress weakening portion, and is used to provide the rebound force required for the first side segment and the second side segment to reset.

5. The coating gasket according to claim 4, characterized in that: The rebound portion is configured as a second curved surface structure; And / or, the rebound portion is configured as a second notch structure.

6. The coating gasket according to claim 5, characterized in that: The second curved surface structure is a cylindrical body that is protruded away from the connection between the first side segment and the middle segment and / or the connection between the second side segment and the middle segment; The second notch structure is a second V-shaped groove formed on the cylindrical body.

7. The coated gasket according to any one of claims 1 to 6, characterized in that: It also includes an adjustment component, which is connected to the first side segment and / or the second side segment and is used to adjust the distance between the first side segment and the second side segment.

8. The coated gasket according to claim 7, characterized in that: The adjustment component comprises: A pull ear, connected to the first side section and / or the second side section, and provided with a plug hole; The adjusting block is wedge-shaped and has a small head end and a large head end, wherein the width of the small head end is smaller than the width of the insertion hole, and the width of the large head end is larger than the width of the insertion hole, and the width of the adjusting block gradually increases from the small head end to the large head end; The adjusting block is used to slide along the inner wall of the insertion hole, so that the side of the adjusting block away from the gasket body abuts against the inner wall of the insertion hole, and the first side segment and / or the second side segment are stretched in a direction away from the middle segment; The adjustment block is provided with a scale from the small end to the large end.

9. The coated gasket according to any one of claims 1 to 6, characterized in that: The first side segment and the second side segment are respectively provided with strip holes, and the length direction of the strip holes is parallel to the length direction of the middle segment.

10. A coating device, characterized in that: A coated gasket comprising any one of claims 1 to 9.

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