Coating die head and coating equipment

Abstract

The utility model provides a coating die head and coating equipment, and relates to the technical field of battery production and manufacturing. The coating die head comprises a first die head, a second die head and a stirring piece; the first die head is provided with a first cavity and a second cavity, the first die head is provided with a feeding port communicated with the first cavity, and the end of the first cavity is communicated with the end of the second cavity. The second die head covers the first die head, a discharge port is formed between the second die head and the first die head, and the discharge port is communicated with the second cavity; the stirring piece is rotationally arranged in the first cavity. The coating equipment comprises a coating die head. The coating die head can prevent slurry in the first cavity and the second cavity from settling.

Description

Technical Field

[0001] The present application relates to the technical field of battery production and manufacturing, and particularly relates to a coating die head and a coating device. Background Art

[0002] The coating die head is the core component of the coating device, and the coating die head can coat viscous slurry on the workpiece. Currently, when the coating device is shut down, due to the poor fluidity of the slurry in the coating die head, the slurry is extremely prone to sedimentation and agglomeration, resulting in waste of materials. Utility Model Content

[0003] To overcome the deficiencies in the prior art, the present application provides a coating die head and a coating device.

[0004] The present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a coating die head, including:

[0006] A first die head, on which a first cavity and a second cavity are respectively formed. The first die head is provided with a feed port communicating with the first cavity, and the end of the first cavity is communicated with the end of the second cavity;

[0007] A second die head, covering the first die head, and an outlet is provided between the second die head and the first die head, and the outlet is communicated with the second cavity;

[0008] A stirring member, rotatably disposed in the first cavity.

[0009] In a possible implementation manner, the coating die head further includes a gasket, the gasket is disposed on the first die head and located between the second die head and the first die head, and the outlet is formed on the gasket, and the outlet is communicated with the first cavity and the second cavity respectively.

[0010] In a possible implementation manner, the gasket includes a main body portion and a plurality of spaced portions connected to each other. The main body portion covers the first cavity, and the plurality of spaced portions are arranged at intervals along the length direction of the main body portion. The main body portion and two adjacent spaced portions enclose to form the outlet.

[0011] In a possible implementation manner, the first die head has a partition portion, the partition portion is located between the first cavity and the second cavity, and channels are formed at both ends of the partition portion. The end of the first cavity is communicated with the end of the second cavity through the channels.

[0012] In a possible implementation manner, the feed port is formed at the middle of the first die head along the length direction.

[0013] In a possible implementation, the coating die head further includes a driving assembly. The end of the stirring member has a connecting end, and the connecting end passes through the first die head and is in transmission connection with the driving assembly.

[0014] In a possible implementation, the coating die head further includes a first sealing member; a connecting groove is provided on the outer wall of the first die head, the first sealing member is sleeved on the connecting end located outside the first cavity, and the first sealing member is located in the connecting groove.

[0015] In a possible implementation, the coating die head further includes a housing and a second sealing member. The housing is connected to the outer wall of the first die head and covers the connecting groove; the end of the connecting end passing through the first die head passes through the housing, the second sealing member is sleeved on the connecting end, and is located inside the housing.

[0016] In a possible implementation, the coating die head further includes a gasket. The gasket is located on the outer wall of the first die head and surrounds the connecting groove, and the housing and the outer wall of the first die head are hermetically connected through the gasket.

[0017] In a second aspect, the present application also provides a coating device, including the above-mentioned coating die head.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows:

[0019] For the coating die head provided by the present application, a first cavity and a second cavity are respectively formed on the first die head, and a feed port communicating with the first cavity is provided. The slurry can be injected into the first cavity through the feed port, the slurry in the first cavity can flow into the second cavity, and then flow out from the discharge port between the first die head and the second die head. When the stirring member rotates in the first cavity, a loop for the slurry to flow can be formed between the first cavity and the second cavity, thereby effectively improving the fluidity of the slurry in the first cavity and the second cavity, and further preventing the slurry from settling and agglomerating.

[0020] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Shows a schematic three-dimensional structure diagram of a coating die head according to an embodiment of the present application;

[0023] Figure 2 Shows an internal schematic diagram of a coating die head according to an embodiment of the present application;

[0024] Figure 3 Shows a schematic three-dimensional structure diagram of a coating die head according to another embodiment of the present application;

[0025] Figure 4 Shows a schematic three-dimensional structure diagram of a gasket according to an embodiment of the present application;

[0026] Figure 5 Shows an exploded schematic diagram of a coating die head according to an embodiment of the present application;

[0027] Figure 6 Shows an internal schematic diagram of a coating die head from another angle according to an embodiment of the present application;

[0028] Figure 7 Shows Figure 6 An enlarged schematic diagram of part A in

[0029] Description of main element symbols:

[0030] 100 - coating die head; 110 - first die head; 111 - first cavity; 112 - second cavity; 113 - partition part; 1131 - channel; 114 - feed port; 115 - connection groove; 120 - second die head; 130 - stirring member; 131 - connection end; 140 - gasket; 141 - discharge port; 142 - main body part; 143 - spacer part; 150 - drive assembly; 151 - drive member; 152 - first seal; 153 - fixing member; 154 - locking member; 155 - coupling; 156 - housing; 157 - gasket; 158 - second seal; 159 - base; 160 - support seat;

[0031] X - first direction; Y - second direction; Z - third direction. Detailed description of specific embodiments

[0032] The following details the embodiments of the present application. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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, and therefore should not be construed as a limitation to the present application.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0035] In the present application, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected 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 application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] Please refer to Figure 1 , an embodiment of the present application provides a coating die head 100, which relates to the technical field of battery production and manufacturing. The coating die head 100 is used to coat a viscous slurry on a workpiece.

[0038] Please refer to Figure 1 and Figure 3, define the length direction of the coating die head 100 as the first direction X, the height direction of the coating die head 100 as the second direction Y, and the width direction of the coating die head 100 as the third direction Z.

[0039] Among them, the first direction X is perpendicular to the second direction Y, and the third direction Z is perpendicular to the first direction X and the second direction Y. It can be understood that the above definitions are only for facilitating the understanding of the relative position relationship of each part in the coating die head 100, and should not be construed as a limitation to this application.

[0040] Please refer to Figures 1 to 4 , the coating die head 100 includes a first die head 110, a second die head 120 and a stirring member 130.

[0041] Among them, a first cavity 111 and a second cavity 112 are respectively formed on the first die head 110. Both the first cavity 111 and the second cavity 112 are used to accommodate the slurry. The end of the first cavity 111 is communicated with the end of the second cavity 112, so that the slurry in the first cavity 111 can be exchanged with the slurry in the second cavity 112.

[0042] An inlet port 114 communicated with the first cavity 111 is provided on the first die head 110; the second die head 120 is covered on the first die head 110, and an outlet port 141 is provided between the second die head 120 and the first die head 110. The outlet port 141 is communicated with the second cavity 112. When the coating die head 100 performs the coating operation, the slurry can be injected into the first cavity 111 through the inlet port 114. The slurry in the first cavity 111 can flow into the second cavity 112 and then flow out from the outlet port 141 to realize the coating of the workpiece.

[0043] The stirring member 130 is rotatably arranged in the first cavity 111; when the coating die head 100 stops the coating operation, the stirring member 130 can rotate in the first cavity 111 to stir the slurry in the first cavity 111, so as to form a loop for the slurry to flow between the first cavity 111 and the second cavity 112, thereby effectively improving the fluidity of the slurry in the first cavity 111 and the second cavity 112 to prevent the slurry from settling and agglomerating when the coating die head stops.

[0044] Please refer to Figure 1 , the length direction of the first die head 110 is parallel to the first direction X, the height direction of the first die head 110 is parallel to the second direction Y, and the width direction of the first die head 110 is parallel to the third direction Z.

[0045] In some embodiments, please refer to Figure 1 and Figure 2, the first cavity 111 and the second cavity 112 are arranged in parallel along the third direction Z, and the extending directions of both the first cavity 111 and the second cavity 112 are parallel to the first direction X.

[0046] In some embodiments, the feed port 114 is opened at one end of the first die head 110 away from the second cavity 112 along the third direction Z, and the feed port 114 is located at the middle of the first die head 110 along the first direction X. When injecting the slurry into the first cavity 111 through the feed port 114, the slurry can flow simultaneously towards both ends of the first cavity 111 along the first direction X to prevent the slurry from accumulating at the feed port 114.

[0047] In some embodiments, the extending direction of the feed port 114 is parallel to the third direction Z.

[0048] In some embodiments, the first die head 110 and the second die head 120 are movably connected through a rotating connecting member, so that the second die head 120 can cover the first die head 110.

[0049] Exemplarily, the rotating connecting member is a hinge. One end of the rotating connecting member is connected to the first die head 110, and the end of the rotating connecting member away from the first die head 110 is connected to the second die head 120, so that relative rotation can occur between the second die head 120 and the first die head 110, thereby facilitating the slurry in the second cavity 112 to flow out through the discharge port 141.

[0050] In some embodiments, please refer to Figure 3 , the coating die head 100 further includes a gasket 140. The gasket 140 is disposed on the first die head 110, and the gasket 140 is located between the second die head 120 and the first die head 110. A discharge port 141 is opened on the gasket 140, and the discharge port 141 is respectively communicated with the first cavity 111 and the second cavity 112.

[0051] When the coating die head 100 performs coating on the workpiece, the stirring member 130 is stationary in the first cavity 111, and the slurry in the second cavity 112 can flow out of the coating die head 100 through the discharge port 141. When the coating die head 100 stops operating, the stirring member 130 rotates in the first cavity 111, so that the slurry flowing from the first cavity 111 into the second cavity 112 flows back into the first cavity 111 through the discharge port 141, or the slurry flowing from the second cavity 112 into the first cavity 111 flows back into the second cavity 112 through the discharge port 141.

[0052] In some embodiments, please refer to Figure 3 and Figure 4, the gasket 140 includes a main body portion 142 and a plurality of spaced portions 143 connected to each other. The main body portion 142 covers the first cavity 111, and the plurality of spaced portions 143 are spaced on the main body portion 142. The main body portion 142 and two adjacent spaced portions 143 enclose a discharge port 141.

[0053] Specifically, the main body portion 142 is provided at one end of the first die head 110 along the third direction Z and is located above the first cavity 111. The length direction of the main body portion 142 and the extending direction of the first cavity 111 are both parallel to the first direction X. One end of the spaced portion 143 along the third direction Z is connected to the main body portion 142, and the plurality of spaced portions 143 are spaced along the first direction X.

[0054] In some embodiments, the spacing between two adjacent spaced portions 143 along the first direction X is the same.

[0055] The main body portion 142 can block part of the first cavity 111 to prevent the slurry in the first cavity 111 from flowing out of one end of the first die head 110 along the third direction Z away from the second cavity 112.

[0056] In some embodiments, please refer to Figure 1 and Figure 2 , the first die head 110 has a partition portion 113. The partition portion 113 is located between the first cavity 111 and the second cavity 112. Channels 1131 are provided at both ends of the partition portion 113. The end of the first cavity 111 is communicated with the end of the second cavity 112 through the channels 1131.

[0057] In some embodiments, the two channels 1131 are arranged in parallel on the first die head 110 along the first direction X.

[0058] The feed port 114 on the first die head 110 is located between the two channels 1131 in the first direction X. After the slurry flows into the first cavity 111 through the feed port 114, the slurry can flow simultaneously to both ends of the first cavity 111 along the first direction X. The slurry at the end of the first cavity 111 can flow to the corresponding end of the second cavity 112 through the channels 1131 to prevent the slurry in the first cavity 111 from settling and agglomerating at the end.

[0059] When the coating die head 100 stops the coating operation, the first stirring member 130 can rotate in the first cavity 111 along the first stirring direction or the second stirring direction opposite to the first stirring direction.

[0060] When the first stirring direction is the clockwise direction, the second stirring direction is the counterclockwise direction; when the first stirring direction is the counterclockwise direction, the second stirring direction is the clockwise direction.

[0061] In some embodiments, please refer toFigure 1 and Figure 3 When the stirring member 130 stirs the slurry in the first cavity 111 along the first stirring direction, the slurry in the first cavity 111 can flow into the second cavity 112 through the channel 1131, and then flow back into the first cavity 111 through the discharge port 141 over the partition portion 113; when the stirring member 130 stirs the slurry in the first cavity 111 along the second stirring direction, the slurry in the second cavity 112 can flow into the first cavity 111 through the channel 1131, and then flow back into the second cavity 112 through the discharge port 141 over the partition portion 113; by alternately rotating the stirring member 130 along the first stirring direction and the second stirring direction, the fluidity of the slurry in the first cavity 111 and the second cavity 112 can be effectively improved, thereby preventing the slurry from settling and agglomerating.

[0062] In some embodiments, please refer to Figure 5 and Figure 6 The coating die head 100 further includes a driving assembly 150. One end of the stirring member 130 has a connecting end 131, and the connecting end 131 passes through the first die head 110 and is in transmission connection with the driving assembly 150.

[0063] The driving assembly 150 can drive the connecting end 131 to alternately rotate along the first stirring direction and the second stirring direction, so that the stirring member 130 alternately rotates along the first stirring direction and the second stirring direction in the first cavity 111.

[0064] The driving assembly 150 includes a driving member 151, and the output end of the driving member 151 is in transmission connection with the connecting end 131 of the stirring member 130.

[0065] Exemplarily, the driving member 151 is a servo motor or a hydraulic cylinder.

[0066] In some embodiments, please refer to Figures 5 to 7 The driving assembly 150 further includes a coupling 155, and the output end of the driving member 151 is in transmission connection with the connecting end 131 of the stirring member 130 through the coupling 155.

[0067] In some embodiments, the stirring member 130 is a spiral stirring rod, and a spiral flow channel is provided on the body of the stirring member 130 to improve the stirring ability of the slurry. The connecting end 131 is connected to the body of the stirring member 130. A part of the connecting end 131 passes through the first die head 110, and the other part is exposed outside the first die head 110 and is in transmission connection with the driving member 151.

[0068] In some embodiments, the coating die head 100 further includes a support base 160 and a base 159. The base 159 is connected to the outer wall of one end of the first die head 110 along the first direction X. The support base 160 is disposed on the base 159. The driving member 151 is disposed on the support base 160, and the output end of the driving member 151 passes through the support base 160.

[0069] In some embodiments, the coating die head 100 further includes a first seal 152. A connection groove 115 is formed in the outer wall of one end of the first die head 110 along the first direction X. The connection groove 115 communicates with the first cavity 111. A part of the connection end 131 passes through the connection groove 115. The first seal 152 is sleeved on the connection end 131 located outside the first cavity 111, and the first seal 152 is located in the connection groove 115. The first seal 152 can prevent the slurry in the first cavity 111 from flowing out through the connection groove 115.

[0070] In some embodiments, one end of the first seal 152 is in interference fit with the inner wall of the connection groove 115, and the other end is disposed outside the connection groove 115 and connected to the outer wall of the first die head 110, so that the first seal 152 is connected to the first die head 110.

[0071] The connection end 131 of the stirring member 130 is in rotational cooperation with the first seal 152.

[0072] In some embodiments, the rotational speed at which the driving member 151 drives the stirring member 130 to rotate is 2 - 5 r / min, so as to ensure that while the first seal 152 seals the connection between the connection end 131 of the stirring member 130 and the inner wall of the connection groove 115, the connection end 131 is also in rotational cooperation with the first seal 152.

[0073] In some embodiments, the coating die head 100 further includes a fixing member 153 and a locking member 154. The fixing member 153 is disposed at one end of the first seal 152 exposed outside the connection groove 115. The locking member 154 passes through the fixing member 153 and the first seal 152 respectively and is connected to the first die head 110, so that the first seal 152 is disposed on the first die head 110.

[0074] Exemplarily, an external thread is provided on the outer surface of one end of the locking member 154. A fixing hole is formed in the first die head 110, and an internal thread corresponding to the external thread is provided on the inner wall of the fixing hole. While one end of the locking member 154 passes through the fixing member 153 and the first seal 152 respectively, it is also in threaded cooperation with the inner wall of the fixing hole, thereby connecting the locking member 154 to the first die head 110.

[0075] In some embodiments, the shape of the fixing member 153 matches the shape of the end of the first seal member 152 that is exposed outside the connection groove 115, so as to increase the contact area between the fixing member 153 and the first seal member 152.

[0076] In some embodiments, the coating die head 100 further includes a housing 156 and a second seal member 158. The housing 156 is connected to the outer wall of one end of the first die head 110 along the first direction X and covers the outside of the connection groove 115. The end of the connection end 131 that penetrates through the first die head 110 penetrates through the housing 156. The second seal member 158 is sleeved on the connection end 131, and the second seal member 158 is located inside the housing 156.

[0077] When the seal of the first seal member 152 fails, the slurry flowing out through the connection groove 115 can flow into the housing 156, and the second seal member 158 can prevent the slurry in the housing 156 from flowing out of the housing 156, thereby preventing the slurry from damaging the driving member 151 or destroying the working environment.

[0078] In some embodiments, the coating die head 100 further includes a gasket 157. The gasket 157 is located on the outer wall of the first die head 110 and surrounds the connection groove 115. The housing 156 and the outer wall of the first die head 110 are sealed and connected through the gasket 157.

[0079] The gasket 157 is connected to the outer wall of one end of the first die head 110 along the first direction X, and the housing 156 and the gasket 157 are detachably connected.

[0080] The housing 156 has an accommodation cavity inside. When the housing 156 is connected to the gasket 157, the second seal member 158 is located in the accommodation cavity inside the housing 156. One end of the second seal member 158 along the first direction X abuts against the side of the fixing member 153 away from the first seal member 152, and one end of the second seal member 158 away from the fixing member 153 along the first direction X abuts against the inner wall of the accommodation cavity, thereby preventing the slurry in the housing 156 from leaking.

[0081] The housing 156 and the gasket 157 are detachably connected to facilitate the repair and replacement of the first seal member 152 and the second seal member 158.

[0082] The gasket 157 can effectively prevent the slurry in the housing 156 from flowing out between the housing 156 and the first die head 110.

[0083] In some embodiments, the coating die head 100 further includes a mounting member (not shown in the figure). One end of the mounting member penetrates through the housing 156 and the gasket 157 respectively and is connected to the outer wall of the first die head 110, so that the gasket 157 is arranged on the first die head 110 and the housing 156 is connected to the gasket 157.

[0084] Exemplarily, the mounting member is a screw, and a mounting hole is formed in the first die head 110. The mounting member is screwed and connected to the inner wall of the mounting hole through a threaded structure.

[0085] Exemplarily, both the first seal 152 and the second seal 158 are rubber seals.

[0086] An embodiment of the present application further provides a coating device, including the coating die head 100 in any of the above embodiments.

[0087] The coating device can coat the viscous slurry on the workpiece through the coating die head 100.

[0088] It can be understood that since the coating device provided in this embodiment has the coating die head 100 in any of the above embodiments, it has all the beneficial effects of the coating die head 100, which will not be listed one by one here.

[0089] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0090] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A coating die head, characterized in that: include: A first die head (110), wherein a first cavity (111) and a second cavity (112) are respectively formed on the first die head (110), wherein the first die head (110) is provided with a feed port (114) connected to the first cavity (111), and an end of the first cavity (111) is connected to an end of the second cavity (112); A second die head (120) is covered on the first die head (110), and a discharge port (141) is provided between the second die head (120) and the first die head (110), and the discharge port (141) is communicated with the second cavity (112); A stirring member (130), wherein the stirring member (130) is rotatably disposed in the first cavity (111).

2. The coating die head according to claim 1, characterized in that: The coating die (100) further comprises a gasket (140), wherein the gasket (140) is arranged on the first die (110) and is located between the second die (120) and the first die (110), and the gasket (140) is provided with the discharge port (141), and the discharge port (141) is respectively connected to the first cavity (111) and the second cavity (112).

3. The coating die head according to claim 2, characterized in that: The gasket (140) comprises a main body (142) and a plurality of spacer parts (143) which are connected to each other, wherein the main body (142) covers the first cavity (111), and the plurality of spacer parts (143) are arranged at intervals along the length direction of the main body (142), and the main body (142) and two adjacent spacer parts (143) enclose the discharge port (141).

4. The coating die head according to claim 1, characterized in that: The first die head (110) has a partition (113), and the partition (113) is located between the first cavity (111) and the second cavity (112). Channels (1131) are provided at both ends of the partition (113), and the end of the first cavity (111) is connected to the end of the second cavity (112) through the channel (1131).

5. The coating die head according to claim 1, characterized in that: The feed port (114) is opened in the middle of the first die head (110) along the length direction.

6. The coating die head according to any one of claims 1 to 5, characterized in that: The coating die head (100) further comprises a driving assembly (150); the end of the stirring member (130) comprises a connecting end (131); the connecting end (131) is passed through the first die head (110) and is drivingly connected to the driving assembly (150).

7. The coating die head according to claim 6, characterized in that: The coating die (100) further comprises a first sealing member (152); a connecting groove (115) is provided on an outer wall of the first die (110); the first sealing member (152) is sleeved on the connecting end (131) located outside the first cavity (111), and the first sealing member (152) is located in the connecting groove (115).

8. The coating die head according to claim 7, characterized in that: The coating die head (100) further comprises a shell (156) and a second sealing member (158); the shell (156) is connected to the outer wall of the first die head (110) and is covered outside the connecting groove (115); the end of the connecting end (131) passing through the first die head (110) is passed through the shell (156), and the second sealing member (158) is sleeved on the connecting end (131) and is located inside the shell (156).

9. The coating die head according to claim 8, characterized in that: The coating die (100) further comprises a sealing gasket (157), wherein the sealing gasket (157) is located on the outer wall of the first die (110) and surrounds the connecting groove (115), and the housing (156) is sealedly connected to the outer wall of the first die (110) via the sealing gasket (157).

10. A coating device, characterized in that: The coating die (100) comprises the coating die (100) as described in any one of claims 1 to 9.

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