Coating device

Abstract

The utility model discloses a coating device. The coating device comprises a machine frame, a groove body and a discharging assembly, the groove body is arranged on the machine frame, the groove body is provided with a material groove and a discharging port communicated with the material groove, the discharging assembly comprises a material blocking plate, a driving part, a lead screw and a nut, the material blocking plate is movably arranged at the discharging port, the driving part is arranged on the machine frame, the lead screw is connected with the output end of the driving part, the driving part can drive the lead screw to rotate, and the nut is arranged on the material blocking plate. The nut is arranged on the lead screw and fixedly connected with the material blocking plate, and the distance measuring piece is arranged on the machine frame. Wherein the multiple discharging assemblies are arranged, the material blocking plates of the multiple discharging assemblies are arranged in the opening direction of the discharging port, and the material blocking plates of the multiple discharging assemblies are used for opening and closing the discharging port. According to the coating device, the discharging precision can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of lithium battery coating machines, and specifically relates to a coating device. Background Art

[0002] The lithium battery coating machine is a device used to produce positive and negative electrodes for lithium-ion batteries. Its working principle is to coat the electrode material onto a conductive substrate through a series of coating processes to form an electrode layer. First, the electrode material is pre-treated and added to a stirring tank filled with a solvent, stirred evenly to form an electrode material slurry. Then, the slurry is pumped to the coating head, and the coating head coats the electrode material onto the conductive substrate. When the lithium battery coating machine produces some positive and negative electrodes for lithium-ion batteries, the electrode material needs to be coated on the conductive substrate at intervals.

[0003] In the related art, the coating device of the lithium battery coating machine is equipped with a plurality of blocking blocks arranged at the discharge port, and the blocking blocks are driven to move by a cylinder, so that the opening of different parts of the discharge port can be adjusted by the movement of each blocking block, thereby realizing the intermittent coating of the electrode material on the conductive substrate.

[0004] With the improvement of production requirements, in order to improve the discharge accuracy of the coating device, it is necessary to improve the control accuracy of the opening of the discharge port, but the control accuracy of the cylinder on the opening of the discharge port is low. Utility Model Content

[0005] The present application aims to at least to some extent solve the technical problem of low discharging accuracy of coating devices in the related art. To this end, the present application provides a coating device.

[0006] The technical solution of this application is:

[0007] The present application provides a coating device, which is applicable to a lithium battery coating machine, and the coating device comprises:

[0008] frame;

[0009] A trough body, comprising a material trough and a material outlet communicated with the material trough, wherein the trough body is arranged on the frame;

[0010] A material discharging assembly, comprising a baffle plate, a driving member, a screw and a nut, wherein the baffle plate is movably arranged at the material discharging port, the driving member is arranged at the frame, the screw is connected to the output end of the driving member, the driving member can drive the screw to rotate, the nut is arranged at the screw, and the nut is fixedly connected to the baffle plate, and the distance measuring member is arranged at the frame;

[0011] There are multiple discharging assemblies, and the baffle plates of the multiple discharging assemblies are arranged along the opening direction of the discharging port, and the multiple baffle plates of the discharging assemblies are used to open and close the discharging port.

[0012] In some embodiments, the discharge port is disposed at the bottom of the trough body, and the baffle plate moves in a horizontal direction.

[0013] In some embodiments, the discharging assembly further includes a guide member, the guide member is provided with a guide groove, the guide member is disposed on the frame, and the baffle plate is movably disposed on the guide groove.

[0014] In some embodiments, the discharging assembly further includes a rolling member, wherein the rolling member is disposed in the guide groove and between the baffle plate and the groove wall of the guide groove.

[0015] In some embodiments, the rolling element includes a roller and a roller frame, the roller is rotatably disposed on the roller frame, the roller frame is disposed on the groove wall of the guide groove, and the roller is in contact with the baffle plate.

[0016] In some embodiments, the discharging assembly further includes a distance measuring member, which is disposed corresponding to the material baffle plate and is used to measure the displacement of the material baffle plate.

[0017] In some embodiments, the discharging assembly further comprises:

[0018] A first fixing frame, arranged on the frame, and the driving member is arranged on the first fixing frame;

[0019] The second fixing frame is arranged on the frame, the distance measuring component is arranged on the second fixing frame, and the driving component is arranged below the distance measuring component.

[0020] In some embodiments, the discharging assembly further includes a distance measuring block, which is fixedly connected to the nut, and the distance measuring block extends into the space above the driving member and contacts the distance measuring end of the distance measuring member.

[0021] In some embodiments, the coating device further comprises a cover body, wherein the cover body is disposed on the trough body, and the cover body is provided with a feed port.

[0022] In some embodiments, the coating device further includes a liquid level meter, which is disposed on the cover and extends into the material trough.

[0023] The embodiments of the present application have at least the following beneficial effects:

[0024] The present application proposes a coating device, in which a frame provides an installation base for a trough body and a discharge assembly, so that the trough body and the discharge assembly can be installed on the coating device through the frame. The material trough of the trough body is used to store electrode materials, and the discharge port of the trough body is arranged corresponding to the conductive substrate, so that the electrode material in the material trough is coated from the discharge port to the conductive substrate. The discharge assembly is used for the opening of the discharge port, and there are multiple discharge assemblies. The baffle plates of the multiple discharge assemblies are arranged at the discharge port, and the opening and closing of the discharge port is realized by moving the baffle plates. When a baffle plate is opened, the electrode material in the material trough is coated from the part of the discharge port located on the baffle plate to the conductive substrate, thereby realizing the intermittent coating of the electrode material on the conductive substrate.

[0025] In order to improve the control accuracy of the opening of the discharge port, a driving member, a screw and a nut are provided. The driving member drives the screw to rotate. Since the baffle plate is movably arranged at the discharge port, the nut is fixedly connected to the baffle plate, so that the nut moves along the axial direction of the screw under the rotation of the screw, so as to drive the baffle plate to move through the nut. Compared with the cylinder, the transmission mechanism composed of the driving member, the screw and the nut can improve the movement accuracy of the baffle plate, that is, improve the control accuracy of the opening of the discharge port, thereby improving the discharge accuracy of the coating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of a coating device according to an embodiment of the present application;

[0028] Figure 2 for Figure 1 A front view of the coating device in FIG.

[0029] Figure 3 for Figure 2 Cross-sectional view of the AA portion.

[0030] Reference numerals:

[0031] 10. Coating device; 100. Frame; 200. trough body; 201. trough; 202. discharge port; 300. discharge assembly; 301. baffle plate; 302. driving member; 303. screw rod; 304. nut; 305. guide member; 305a. guide groove; 305b. upper guide block; 305c. lower guide block; 306. rolling member; 306a. roller; 306b. roller frame; 307. distance measuring member; 308. first fixed frame; 309. second fixed frame; 310. distance measuring block; 400. cover body; 401. feed port; 500. liquid level meter; 600. track; 700. micrometer; 800. scraper. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0034] Lithium battery coating machine is a kind of equipment used to produce positive and negative electrodes of lithium-ion batteries. Its working principle is to coat the electrode material onto the conductive substrate through a series of coating processes to form an electrode layer. First, the electrode material is pre-treated and added to a stirring tank filled with a solvent, stirred evenly to form an electrode material slurry, and then the slurry is pumped to the coating device, which coats the electrode material onto the conductive substrate.

[0035] When a lithium battery coating machine produces some positive and negative electrodes of lithium-ion batteries, it is necessary to coat the electrode materials on the conductive substrate at intervals, including coating at intervals along the length direction of the conductive substrate and coating at intervals along the width direction of the conductive substrate. It should be noted that the length direction of the conductive substrate is the running direction of the conductive substrate on the lithium battery coating machine, and the width direction of the conductive substrate is the direction perpendicular to the running direction of the conductive substrate on the lithium battery coating machine.

[0036] In the related art, the coating device of the lithium battery coating machine is provided with a plurality of blocking blocks arranged at the discharge port, and the blocking blocks are moved by a cylinder. The coating device is usually opened along the width direction of the conductive substrate at the discharge port, and a plurality of blocking blocks are arranged along the opening direction of the discharge port. Thus, the opening of different parts of the discharge port can be adjusted by moving each blocking block. In this way, the electrode material is coated at intervals on the conductive substrate. With the improvement of production requirements, in order to improve the discharge accuracy of the coating device, it is necessary to improve the control accuracy of the discharge port opening, but the control accuracy of the discharge port opening by the cylinder is low.

[0037] To this end, an embodiment of the present application proposes a coating device to solve, to a certain extent, the technical problem that the coating device in the related art has a deviation in the control effect of the opening of the discharge port, resulting in low discharge accuracy of the coating device.

[0038] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0039] See also Figure 1 to Figure 3 , the present application embodiment provides a coating device 10. Figure 1 to Figure 3 The coating device 10 includes a frame 100 , a tank body 200 and a discharging assembly 300 .

[0040] The trough body 200 in the embodiment of the present application is arranged on the frame 100, and the trough body 200 has a material trough 201 and a discharge port 202 connected to the material trough 201. The discharge assembly 300 includes a baffle plate 301, a driving member 302, a screw rod 303 and a nut 304. The baffle plate 301 is movably arranged at the discharge port 202, the driving member 302 is arranged on the frame 100, the screw rod 303 is connected to the output end of the driving member 302, the driving member 302 can drive the screw rod 303 to rotate, and the nut 304 is arranged on the screw rod.

[0041] , and the nut 304 is fixedly connected to the baffle plate 301, and the distance measuring member 307 is arranged on the frame 100. Among them, the discharging assembly 300 is provided with multiple, and the baffle plates 301 of the multiple discharging assemblies 300 are arranged along the opening direction of the discharging port 202, and the baffle plates 301 of the multiple discharging assemblies 300 are used to open and close the discharging port 202.

[0042] Specifically, the frame 100 provides an installation base for the tank body 200 and the discharge assembly 300, so that the tank body 200 and the discharge assembly 300 are installed on the coating device 10 through the frame 100. The material tank 201 of the tank body 200 is used to store electrode materials, and the discharge port 202 of the tank body 200 is set corresponding to the conductive substrate, so that the electrode material in the material tank 201 is coated on the conductive substrate from the discharge port 202. The discharge assembly 300 is used for the opening of the discharge port 202. The discharge assembly 300 is provided with multiple baffle plates 301 of multiple discharge assemblies 300 arranged at the discharge port 202, and the opening and closing of the discharge port 202 is realized by moving the baffle plates 301. When a certain baffle plate 301 is opened, the electrode material in the material tank 201 is coated on the conductive substrate from the portion of the discharge port 202 located at the baffle plate 301, thereby realizing the intermittent coating of the electrode material on the conductive substrate.

[0043] In order to improve the control accuracy of the opening of the discharge port 202, a driving member 302, a screw rod 303 and a nut 304 are provided. The driving member 302 drives the screw rod 303 to rotate. Since the baffle plate 301 is movably arranged at the discharge port 202, the nut 304 is fixedly connected to the baffle plate 301, so that the nut 304 moves along the axial direction of the screw rod 303 under the rotation of the screw rod 303, so as to drive the baffle plate 301 to move through the nut 304. Compared with the cylinder, the transmission mechanism composed of the driving member 302, the screw rod 303 and the nut 304 can improve the movement accuracy of the baffle plate 301, that is, improve the control accuracy of the opening of the discharge port 202, thereby improving the discharge accuracy of the coating device 10.

[0044] In order to ensure the transmission accuracy of the transmission mechanism composed of the driving member 302, the screw rod 303 and the nut 304, the driving member 302 can be set as a servo motor, a linear motor or the like that can be used to drive the screw rod 303 to rotate, and the screw rod 303 and the nut 304 can be set as a ball screw mechanism, and the output shaft of the motor and the screw rod 303 are connected by a coupling.

[0045] In some embodiments, Figure 3 As shown, the discharge port 202 is arranged at the bottom of the tank body 200, and the baffle plate 301 moves in the horizontal direction.

[0046] In the lithium battery coating machine, the conductive substrate is located below the coating device 10, so that the discharge port 202 is set at the bottom of the tank body 200, so that the electrode material in the tank 201 is coated on the conductive substrate from the discharge port 202. The baffle plate 301 is arranged to move in the horizontal direction, so that the opening of the discharge port 202 can be adjusted by moving the baffle plate 301 in the horizontal direction.

[0047] In addition, the coating device 10 is further provided with a scraper 800, which is arranged at the discharge port 202 to flatten the electrode material coated on the conductive substrate and improve the uniformity of the electrode material on the conductive substrate. The discharge assembly 300 and the scraper 800 are arranged on both sides of the tank body 200 along the running direction of the conductive substrate on the coating machine.

[0048] In some embodiments, Figure 1 as well as Figure 3 As shown, the material discharging assembly 300 further includes a guide member 305, the guide member 305 is provided with a guide groove 305a, the guide member 305 is arranged on the frame 100, and the material blocking plate 301 is movably arranged in the guide groove 305a. The material blocking plate 301 is guided and limited by the guide groove 305a of the guide member 305, so that the material blocking plate 301 can be movably arranged at the material discharging port 202.

[0049] In some embodiments, Figure 1 as well as Figure 3 As shown, the discharging assembly 300 further includes a rolling member 306, which is disposed in the guide groove 305a and between the baffle plate 301 and the groove wall of the guide groove 305a. In order to ensure the moving effect of the baffle plate 301 in the guide groove 305a of the guide member 305, the rolling member 306 is disposed in the guide groove 305a and between the baffle plate 301 and the groove wall of the guide groove 305a, so as to improve the moving effect of the baffle plate 301 in the guide groove 305a through the rolling member 306.

[0050] In some embodiments, Figure 3 As shown, the rolling member 306 includes a roller 306a and a roller frame 306b, the roller 306a is rotatably arranged on the roller frame 306b, the roller frame 306b is arranged on the groove wall of the guide groove 305a, and the roller 306a contacts the material blocking plate 301. The roller frame 306b is used to set the roller 306a, the roller frame 306b is arranged on the groove wall of the guide groove 305a, and the roller frame 306b and the guide member 305 can be connected by screw connection or welding. In this way, when the material blocking plate 301 is arranged in the guide groove 305a, the roller 306a of the fixed member contacts the material blocking plate 301, so that the movement effect of the material blocking plate 301 in the guide groove 305a is improved by the rotation of the roller 306a on the roller frame 306b.

[0051] In some embodiments, Figure 1 as well as Figure 3As shown, the guide member 305 includes an upper guide block 305b and a lower guide block 305c, the upper guide block 305b and the lower guide block 305c are surrounded to form a guide groove 305a, the upper guide block 305b is fixedly connected to the outer wall surface of the groove body 200, and the lower guide block 305c is fixedly arranged on the frame 100. Two rolling members 306 can be provided, and the two rolling members 306 are respectively arranged on the upper guide block 305b and the lower guide block 305c, and the rollers 306a of the two rolling members 306 are arranged opposite to each other.

[0052] In some embodiments, Figure 1 As shown, the discharging assembly 300 also includes a distance measuring member 307, which is arranged corresponding to the baffle plate 301 and is used to measure the displacement of the baffle plate 301. The displacement of the baffle plate 301 is measured by the distance measuring member 307, and the displacement of the baffle plate 301 is the opening of the discharging port 202, that is, the opening of the discharging port 202 is measured by the distance measuring member 307. The distance measuring member 307 can be a micrometer 700, and the probe of the micrometer 700 is in contact with the baffle plate 301 or the nut 304, and can measure the displacement of the baffle plate 301. The micrometer 700 has a high measurement accuracy, and the micrometer 700 corresponds to the transmission mechanism composed of the driving member 302, the screw rod 303 and the nut 304, so as to accurately measure and control the opening of the discharging port 202.

[0053] In some embodiments, Figure 1 as well as Figure 3 As shown, the discharging assembly 300 also includes a first fixed frame 308 and a second fixed frame 309. The first fixed frame 308 is arranged on the frame 100, the driving member 302 is arranged on the first fixed frame 308, the second fixed frame 309 is arranged on the frame 100, the distance measuring member 307 is arranged on the second fixed frame 309, and the driving member 302 is arranged below the distance measuring member 307.

[0054] Since the baffle plates 301 of the plurality of discharging assemblies 300 are arranged in an array at the discharging port 202 of the tank body 200, and correspondingly, the plurality of discharging assemblies 300 are also arranged in an array, the installation space is limited, and in order to facilitate observation of the data measured by the distance measuring member 307, the driving member 302 and the distance measuring member 307 are arranged by the first fixing frame 308 and the second fixing frame 309, so that the driving member 302 is arranged below the distance measuring member 307. In this way, the space installation requirements of the driving member 302 and the distance measuring member 307 are met.

[0055] In some embodiments, Figure 1 as well as Figure 3As shown, the discharging assembly 300 also includes a distance measuring block 310 , which is fixedly connected to the nut 304 , and extends into the space above the driving member 302 , and the distance measuring block 310 contacts the distance measuring end of the distance measuring member 307 .

[0056] When the distance measuring member 307 is a measuring instrument such as a micrometer 700 that needs to contact the object to be measured, since the distance measuring member 307 is arranged above the driving member 302, it is not convenient for the distance measuring member 307 to contact the material blocking plate 301 or the nut 304. Therefore, a distance measuring block 310 is arranged to be fixedly connected with the nut 304, and the distance measuring block 310 extends into the space above the driving member 302, and the distance measuring block 310 contacts the distance measuring end of the distance measuring member 307. In this way, the distance measuring member 307 measures the displacement of the material blocking plate 301.

[0057] In some embodiments, Figure 1 as well as Figure 3 As shown, the coating device 10 further includes a cover body 400, which is covered on the tank body 200, and the cover body 400 is provided with a feed port 401. In order to prevent the electrode material in the material tank 201 of the tank body 200 from being contaminated by other materials, the cover body 400 is provided on the tank body 200 to seal the electrode material in the material tank 201 of the tank body 200, and at the same time, the feed port 401 is provided on the cover body 400 to add the electrode material into the material tank 201 through the feed port 401. Usually, a pipeline is provided between the stirring tank and the feed port 401 of the cover body 400 for communication, and under the action of a liquid pump, the electrode material in the stirring tank passes through the pipeline and the feed port 401 of the cover body 400 into the material tank 201 of the tank body 200.

[0058] In some embodiments, Figure 1 as well as Figure 3 As shown, the coating device 10 further includes a liquid level meter 500, which is disposed on the cover body 400 and extends into the material tank 201. The liquid level meter 500 is used to measure the residual amount of the electrode material in the material tank 201 of the tank body 200, so that when the residual amount of the electrode material is low, the electrode material is added to the material tank 201 of the tank body 200 in time to ensure the normal operation of the coating machine.

[0059] In some embodiments, Figure 1 as well as Figure 3As shown, the coating device 10 also includes a track 600, and the frame 100 is movably arranged on the track 600. The track 600 is arranged on the main body of the coating machine, and the track 600 is arranged in the vertical direction, so that the distance between the discharge port 202 of the coating device 10 and the conductive substrate on the coating machine can be adjusted by moving the frame 100 on the track 600, that is, the coating thickness of the electrode material on the conductive substrate can be adjusted. At the same time, a micrometer 700 is also provided on the frame 100, and the probe of the micrometer 700 is in contact with the main body of the coating machine to measure and adjust the distance between the discharge port 202 of the coating device 10 and the conductive substrate on the coating machine through the micrometer 700. That is, the position of the frame 100 on the track 600 can be adjusted by the distance value measured by the micrometer 700 to obtain the required coating thickness.

[0060] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] In the description of the present application, 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" and "counterclockwise" 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 application 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 application.

[0062] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0063] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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 this application can be understood according to specific circumstances.

[0064] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 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 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 different embodiments or examples described in this specification.

[0066] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0067] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A coating device, suitable for a lithium battery coating machine, characterized in that: include: frame; A trough body, comprising a material trough and a material outlet communicated with the material trough, wherein the trough body is arranged on the frame; A material discharging assembly, comprising a distance measuring member, a material baffle plate, a driving member, a screw rod and a nut, wherein the material baffle plate is movably arranged at the material discharging port, the driving member is arranged at the frame, the screw rod is connected to the output end of the driving member, the driving member can drive the screw rod to rotate, the nut is arranged at the screw rod, and the nut is fixedly connected to the material baffle plate, and the distance measuring member is arranged at the frame; There are multiple discharging assemblies, and the baffle plates of the multiple discharging assemblies are arranged along the opening direction of the discharging port, and the multiple baffle plates of the discharging assemblies are used to open and close the discharging port.

2. The coating device according to claim 1, characterized in that: The material outlet is arranged at the bottom of the trough body, and the material blocking plate moves in a horizontal direction.

3. The coating device according to claim 2, characterized in that: The discharging assembly further comprises a guide member, the guide member is provided with a guide groove, the guide member is arranged on the frame, and the baffle plate is movably arranged on the guide groove.

4. The coating device according to claim 3, characterized in that: The discharging assembly further comprises a rolling member, which is arranged in the guide groove and between the baffle plate and the groove wall of the guide groove.

5. The coating device according to claim 4, characterized in that: The rolling element comprises a roller and a roller frame, wherein the roller is rotatably arranged on the roller frame, the roller frame is arranged on the groove wall of the guide groove, and the roller contacts the material baffle plate.

6. The coating device according to any one of claims 1 to 5, characterized in that: The distance measuring member is arranged corresponding to the material baffle plate and is used for measuring the displacement of the material baffle plate.

7. The coating device according to claim 6, characterized in that: The discharging assembly further comprises: A first fixing frame, arranged on the frame, and the driving member is arranged on the first fixing frame; The second fixing frame is arranged on the frame, the distance measuring component is arranged on the second fixing frame, and the driving component is arranged below the distance measuring component.

8. The coating device according to claim 7, characterized in that: The discharging assembly further comprises a distance measuring block, which is fixedly connected to the nut. The distance measuring block extends into the space above the driving member and contacts the distance measuring end of the distance measuring member.

9. The coating device according to any one of claims 1 to 5, characterized in that: The coating device further comprises a cover body, which is arranged on the trough body and is provided with a feed inlet.

10. The coating device according to claim 9, characterized in that: The coating device further comprises a liquid level meter, which is arranged on the cover body and extends into the material tank.

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