Printing and coating equipment

Abstract

The utility model belongs to the technical field of batteries, and discloses printing and coating equipment which comprises a storage tank, a printing and coating roller and a stirring piece, the interior of the storage tank is used for storing slurry; a partial area below the axis of the printing and coating roller is positioned in the storage tank and is positioned below the liquid level of the slurry; the stirring part is arranged in the material storage tank and located between the printing and coating roller and the bottom of the material storage tank, and the stirring part horizontally moves in a reciprocating mode in the axial direction of the printing and coating roller so as to stir the slurry. According to the printing and coating equipment, the problem that the coating quality of the diaphragm is reduced due to slurry precipitation can be prevented, and the yield of the diaphragm is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a printing and coating device. Background Art

[0002] Micro gravure coating uses a gravure roll with a relatively small diameter. The surface of the gravure roll is engraved with patterns or grooves. Part of the roll surface of the gravure roll is immersed in the storage tank. The gravure roll rotates and uses the patterns or grooves engraved on the surface to pick up the slurry in the storage tank. After being quantified by a doctor blade, the slurry on the groove surface of the gravure roll will be scraped clean, and a certain volume of slurry is retained in the grooves. When the roll surface with a quantified amount of slurry contacts the reversely running diaphragm, a wetting line is formed at the contact point. The slurry wets the diaphragm under the action of surface tension. The slurry in the grooves is taken out due to viscosity, and then transferred to the surface of the diaphragm, where it wets and spreads, achieving uniform coating of the diaphragm. The slurry in the existing storage tank is prone to precipitation at the bottom of the tank, which may lead to uneven slurry coating when the gravure roll coats the substrate, affecting the coating effect of the diaphragm. Summary of the Utility Model

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a printing and coating device.

[0004] In a first aspect of the present utility model, there is provided a printing and coating device, including:

[0005] A storage tank for storing slurry therein;

[0006] A printing and coating roll, a partial area below the axis of the printing and coating roll is located in the storage tank and below the liquid level of the slurry;

[0007] A stirring member disposed in the storage tank and between the printing and coating roll and the bottom of the storage tank, the stirring member reciprocates linearly along the axial direction of the printing and coating roll to agitate the slurry.

[0008] The printing and coating device provided by the present utility model has a simple structure and low cost. By using the stirring member disposed in the storage tank to reciprocate linearly along the axial direction of the printing and coating roll, the problem of the decline in the coating quality of the diaphragm caused by slurry precipitation can be prevented, and the yield rate of the diaphragm can be improved.

[0009] In addition, the printing and coating device of the present utility model may further have the following additional technical features:

[0010] Preferably, the distance between the stirring member and the printing and coating roll is N, and the distance between the stirring member and the bottom surface of the storage tank is M, and N:M is (1:1)-(4:1).

[0011] Preferably, the reciprocating linear motion frequency of the stirring member is 50-300 times / min.

[0012] Preferably, the stirring member is connected to a stirring driving member, and the stirring driving member includes a stirring frame and a driving mechanism. Among them, the stirring frame includes a first stirring frame and a second stirring frame which are bent and connected;

[0013] The first stirring frame is fixedly connected to the stirring member, the first stirring frame extends along the height direction of the storage tank, and extends out of the upper end surface of the storage tank; the second stirring frame extends along the axial direction perpendicular to the printing roller and extends outward from the storage tank;

[0014] The driving mechanism is connected to the second stirring frame to drive the second stirring frame to linearly move along the axial direction of the printing roller.

[0015] Preferably, at least one first ultrasonic transducer is provided on the outer side of the bottom of the storage tank. The first ultrasonic transducer includes a first ultrasonic vibrating rod, and the first ultrasonic vibrating rod is fixedly connected to the bottom of the storage tank;

[0016] The first ultrasonic vibrating rod includes a plurality of first diameter rod segments and second diameter rod segments which are alternately arranged in sequence, and the diameter of the first diameter rod segment is different from that of the second diameter rod segment.

[0017] Preferably, a filter screen is provided in the storage tank. The filter screen divides the inner cavity of the storage tank into a first space and a second space, and the printing roller is arranged in the first space; a liquid inlet pipe is provided at the bottom of the storage tank, and the liquid inlet pipe is connected to the second space.

[0018] Preferably, the mesh number of the filter screen is 100-500 meshes.

[0019] Preferably, the printing device further includes a storage tank. The storage tank includes a tank body. The tank body includes a circular side wall. A frustum-shaped bottom wall is provided at the lower part of the circular side wall. A liquid discharge port is provided on the frustum-shaped bottom wall, and the liquid discharge port is communicated with the liquid inlet pipe;

[0020] A top wall is provided at the upper part of the circular side wall. A liquid inlet is provided on the top wall; a return liquid pipe is provided at the bottom of the storage tank at the position of the second space, and the return liquid pipe is communicated with the liquid inlet.

[0021] Preferably, a stirring motor is provided on the top wall, and the stirring motor is connected to a stirring rod which extends into the tank body.

[0022] Preferably, at least one second ultrasonic transducer is provided on the top wall. The second ultrasonic transducer includes a second ultrasonic vibrating rod which extends into the tank body. The second ultrasonic vibrating rod includes a plurality of third diameter rod segments and fourth diameter rod segments which are alternately arranged in sequence, and the diameters of the third diameter rod segments are different from those of the fourth diameter rod segments.

[0023] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0024] Other features, objectives, and advantages of this application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 The front view of the printing and coating device provided by the embodiment of this application;

[0026] Figure 2 The side view of the printing and coating device provided by the embodiment of this application;

[0027] Figure 3 Another structural diagram of the printing and coating device provided by the embodiment of this application.

[0028] In the above figures:

[0029] 100 Storage tank; 101 Liquid inlet pipeline; 102 Liquid return pipeline; 103 First space; 104 Second space;

[0030] 110 Printing and coating roller; 120 Stirring member; 130 First stirring frame; 131 Second stirring frame;

[0031] 140 Driving mechanism; 141 Slide block; 142 Slide rail;

[0032] 150 First ultrasonic transducer; 160 Filter screen;

[0033] 170 Storage tank; 171 Tank body; 1711 Circular side wall; 1712 Inverted frustum-shaped bottom wall; 1713 Top wall;

[0034] 180 Stirring motor; 181 Stirring rod; 190 Second ultrasonic transducer; 200 Liquid delivery pump;

[0035] 210 First over-roller; 220 Second over-roller; 230 Diaphragm; 240 Scraper; 250 Slurry. Detailed Embodiments

[0036] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the sake of description, only the parts related to the utility model are shown in the drawings.

[0037] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0038] The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "the", and "said" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted in an open, inclusive sense, i.e., "including, but not limited to".

[0040] In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples", etc. are intended to indicate that specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0041] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating 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 embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more.

[0042] As Figures 1 to 2 shown, in the first aspect of the present utility model, a printing and coating device is provided, including:

[0043] A storage tank 100 for storing a slurry 250 therein;

[0044] A printing and coating roller 110, a partial area below the axis of the printing and coating roller 110 is located in the storage tank 100 and below the liquid level of the slurry 250;

[0045] A stirring member 120 is disposed within the material storage tank 100 and is located between the printing and coating roller 110 and the bottom of the material storage tank 100. The stirring member 120 reciprocates linearly along the axial direction of the printing and coating roller 110 to agitate the slurry 250.

[0046] Specifically, the material storage tank 100 stores a slurry 250, which can be a positive electrode slurry 250 or a negative electrode slurry 250. For battery electrode sheets, the slurry 250 can be a solid electrolyte material, such as an inorganic material. The surface of the printing and coating roller 110 is etched with a mesh pattern, and a partial area of the roller surface of the printing and coating roller 110 is below the liquid level of the slurry 250 within the material storage tank 100, such that the roller surface of the printing and coating roller 110 can be in direct contact with the slurry 250. During the rotation of the printing and coating roller 110, the slurry 250 within the material storage tank 100 can be lifted and the lifted slurry 250 can be transferred to the surface of the diaphragm 230 moving in a direction opposite to the rotational linear velocity of the printing and coating roller 110 for coating the surface to form a coated area. Among them, the diaphragm 230 can be a positive electrode sheet or a negative electrode sheet of the battery.

[0047] A stirring member 120 is disposed between the bottom of the material storage tank 100 and the printing and coating roller 110. The stirring member 120 can be a stirring rod, and the stirring member 120 extends along a direction perpendicular to the axial direction of the printing and coating roller 110. The stirring member 120 can reciprocate linearly along the axial direction of the printing and coating roller 110 to agitate the slurry 250, prevent the slurry 250 from precipitating within the material storage tank 100, ensure the uniformity of the slurry 250, and thereby enable the diaphragm 230 to form a uniform coating layer and improve the yield rate of the diaphragm 230.

[0048] The printing and coating equipment provided by the embodiments of the present application has a simple structure and low cost. By using the stirring member 120 disposed within the material storage tank 100 to reciprocate linearly along the axial direction of the printing and coating roller 110, the problem of the coating quality of the diaphragm 230 deteriorating due to the precipitation of the slurry 250 can be prevented, and the yield rate of the diaphragm 230 can be improved.

[0049] In some embodiments, as Figure 1 shown, the distance between the stirring member 120 and the printing and coating roller 110 is N, and the distance between the stirring member 120 and the bottom surface of the material storage tank 100 is M. N:M is (1:1)-(4:1).

[0050] Specifically, the ratio of the distance N between the stirring member 120 and the coating roller 110 to the distance M between the stirring member 120 and the bottom surface of the storage tank 100 satisfies that N:M is (1:1)-(4:1). Exemplarily, such as N:M being 1:1, 2:1, 3:1, 4:1, etc., that is, the distance N between the stirring member 120 and the coating roller 110 is greater than or equal to the distance M between the stirring member 120 and the bottom surface of the storage tank 100. Preferably, the stirring member 120 is arranged as close as possible to the bottom surface of the storage tank 100 between the bottom of the storage tank 100 and the coating roller 110 to stir the slurry 250 near the bottom of the storage tank 100, further improving the mixing uniformity of the slurry 250.

[0051] In some embodiments, the frequency of the reciprocating translational motion of the stirring member 120 is 50 - 300 times / min.

[0052] Specifically, if the frequency of the reciprocating translational motion of the stirring member 120 is lower than 50 times / min, the slurry 250 in the storage tank 100 cannot be sufficiently stirred, resulting in non-uniformity of the slurry 250; if the frequency of the reciprocating translational motion of the stirring member 120 is higher than 300 times / min, air bubbles will appear in the slurry 250. When the slurry 250 with air bubbles is used to coat the diaphragm 230, a coating layer with uneven thickness will be formed, affecting the performance of the diaphragm 230. By adopting the frequency of the reciprocating translational motion of the stirring member 120 provided in the embodiments of the present application, it can be ensured that the stirring member 120 can sufficiently stir the slurry 250 in the storage tank 100, making the slurry 250 evenly mixed and not causing the generation of air bubbles. Exemplarily, such as the frequency of the reciprocating translational motion of the stirring member 120 being 50 times / min, 80 times / min, 100 times / min, 150 times / min, 200 times / min, 220 times / min, 250 times / min, 280 times / min, 300 times / min, etc., or a range composed of any of the above values.

[0053] In some embodiments, as Figures 1 to 3 shown, the stirring member 120 is connected with a stirring driving member, and the stirring driving member includes a stirring frame and a driving mechanism 140. Among them, the stirring frame includes a first stirring frame 130 and a second stirring frame 131 which are bent and connected;

[0054] The first stirring frame 130 is fixedly connected with the stirring member 120, the first stirring frame 130 extends along the height direction of the storage tank 100 and extends out of the upper end surface of the storage tank 100; the second stirring frame 131 extends along the axial direction perpendicular to the coating roller 110 and extends towards the outside of the storage tank 100;

[0055] The driving mechanism 140 is connected with the second stirring frame 131 to drive the second stirring frame 131 to linearly move along the axial direction of the coating roller 110.

[0056] Specifically, the stirring member 120, the first stirring frame 130, the second stirring frame 131 and the driving mechanism 140 are fixedly connected in sequence. Among them, the first stirring frame 130 extends along the height direction of the storage tank 100 and is arranged inside the storage tank 100, and extends out of the upper end surface of the storage tank 100; the second stirring frame 131 extends along the axial direction perpendicular to the printing roller 110 and extends outward of the storage tank 100 and is arranged outside the storage tank 100; among them, a reinforcing frame can be fixedly arranged between the first stirring frame 130 and the second stirring frame 131 to improve the connection firmness between the first stirring frame 130 and the second stirring frame 131, thereby ensuring the smooth operation of the stirring member 120; the second stirring frame 131 is arranged parallel to the stirring member 120. The driving mechanism 140 drives the second stirring frame 131 to linearly reciprocate along the axial direction of the printing roller 110, driving the first stirring frame 130 and the stirring member 120 to reciprocate and translate axially in the storage tank 100 to stir the slurry 250 in the storage tank 100, improve the mixing uniformity of the slurry 250, and avoid the precipitation phenomenon of the slurry 250.

[0057] The driving mechanism 140 includes a pneumatic cylinder, a hydraulic cylinder, an electric push rod, a lead screw mechanism or a sliding driving assembly. The driving mechanism 140 is used to provide the driving force for the stirring member 120 to reciprocate and translate axially along the printing roller 110, and then the stirring frequency, time, etc. of the stirring member 120 can be controlled. Among them, the sliding driving assembly includes a slider 141 and a slide rail 142 that are slidably connected. The slide rail 142 extends along the axial direction of the printing roller 110. The slider 141 is fixedly connected to the second stirring member 120. The slider 141 is slidably arranged on the slide rail 142. By the linear movement of the slider 141 on the slide rail 142, the stirring member 120 is driven to reciprocate and translate axially along the printing roller 110. The slider 141 can also be connected to a motor or the like to provide the driving force for the stirring member 120 to reciprocate and translate axially along the printing roller 110, realizing the precise control of the stirring of the stirring member 120.

[0058] In some embodiments, as Figure 1 and Figure 3 shown, at least one first ultrasonic transducer 150 is arranged outside the bottom of the storage tank 100. The first ultrasonic transducer 150 includes a first ultrasonic vibration rod, and the first ultrasonic vibration rod is fixedly connected to the bottom of the storage tank 100;

[0059] The first ultrasonic vibration rod includes a plurality of first diameter rod segments and second diameter rod segments that are alternately arranged in sequence, and the diameter of the first diameter rod segment is different from the diameter of the second diameter rod segment.

[0060] Specifically, by setting the first ultrasonic transducer 150, the uniformity of the material mixing in the storage tank 100 can be further improved, preventing the slurry 250 from precipitating. Among them, the first ultrasonic vibrating rod includes a first diameter rod section and a second diameter rod section with different diameters arranged alternately in sequence, which can improve the irregularity of the disturbance, cause the slurry 250 to diffuse in multiple directions, and further improve the mixing uniformity of the slurry 250.

[0061] In some embodiments, such as Figure 1 and Figure 3 shown, a filter screen 160 is arranged in the storage tank 100. The filter screen 160 divides the cavity in the storage tank 100 into a first space 103 and a second space 104. The printing and coating roller 110 is arranged in the first space 103; a liquid inlet pipeline 101 is arranged at the bottom of the storage tank 100, and the liquid inlet pipeline 101 is connected to the second space 104.

[0062] Specifically, the filter screen 160 extends from the bottom to the top of the storage tank 100, dividing the cavity in the storage tank 100 into a first space 103 and a second space 104. Among them, the printing and coating roller 110, the stirring member 120, the first stirring frame 130, etc. are located in the first space 103, avoiding the interference of the filter screen 160 on the work of the printing and coating roller 110, the stirring member 120, etc. A liquid inlet pipeline 101 is connected to the bottom of the storage tank 100. Through the liquid inlet pipeline 101, the slurry 250 can be conveyed into the storage tank 100 to ensure the continuous progress of gravure coating. The liquid inlet pipeline 101 is connected to the second space 104, so that the slurry 250 conveyed into the storage tank 100 through the liquid inlet pipeline 101 first passes through the filter screen 160 for filtration treatment to discharge the air bubbles in the slurry 250, and then is stirred by the stirring member 120 to form a slurry 250 with less and uniform air bubbles.

[0063] In some embodiments, the mesh number of the filter screen 160 is 100 - 500 meshes.

[0064] Specifically, if the mesh number of the filter screen 160 is lower than 100 meshes, it will affect the passing rate of the slurry 250 from the second space 104 to the first space 103; if the mesh number of the filter screen 160 is higher than 500 meshes, the air bubbles in the slurry 250 cannot be effectively removed. Exemplarily, the mesh number of the filter screen 160 is 100 meshes, 120 meshes, 150 meshes, 200 meshes, 230 meshes, 240 meshes, 260 meshes, 300 meshes, 350 meshes, 400 meshes, 450 meshes, 500 meshes, etc., or a range composed of any of the above values. By adopting the above mesh number of the filter screen 160, the effective removal of impurities such as air bubbles in the slurry 250 can be realized without affecting the passing rate of the slurry 250.

[0065] In some embodiments, such as Figure 3As shown, the printing and coating device further includes a storage tank 170. The storage tank 170 includes a tank body 171. The tank body 171 includes a circular side wall 1711. A frustum-shaped bottom wall 1712 is provided at the lower part of the circular side wall 1711. A liquid discharge port is provided on the frustum-shaped bottom wall 1712, and the liquid discharge port is communicated with the liquid inlet pipeline 101.

[0066] A top wall 1713 is provided at the upper part of the circular side wall 1711, and a liquid inlet is provided on the top wall 1713. A liquid return pipeline 102 is provided at the bottom of the storage tank 100 at the second space 104, and the liquid return pipeline 102 is communicated with the liquid inlet.

[0067] Specifically, the tank body 171 includes a circular side wall 1711 and a frustum-shaped bottom wall 1712. A liquid discharge port is provided on the frustum-shaped bottom wall 1712, and a liquid discharge valve can be provided at the liquid discharge port. The liquid discharge port is communicated with the liquid inlet pipeline 101 to supply the slurry 250 into the storage tank 100 through the storage tank 170. A top wall 1713 is provided at the upper part of the circular side wall 1711, and a liquid inlet is provided on the top wall 1713. A liquid inlet valve is provided at the liquid inlet. The liquid inlet on the top wall 1713 is communicated with the liquid return pipeline 102 at the bottom of the storage tank 100, so that the slurry 250 in the storage tank 100 can be recycled into the storage tank 170, realizing the reuse of the slurry 250 and saving costs.

[0068] In some embodiments, as Figure 3 shown, a stirring motor 180 is provided on the top wall 1713. The stirring motor 180 is connected with a stirring rod 181, and the stirring rod 181 extends into the tank body 171.

[0069] Specifically, the tank body 171 includes a circular side wall 1711. When the stirring rod 181 stirs the slurry 250 in the tank body 171, there is no blockage in the circumferential direction of the slurry 250, which can avoid the problem that the slurry 250 precipitates at the blocked part due to local blockage, and is beneficial to improving the uniformity of the slurry 250 mixing in the tank body 171.

[0070] In some embodiments, as Figure 3 shown, at least one second ultrasonic transducer 190 is provided on the top wall 1713. The second ultrasonic transducer 190 includes a second ultrasonic vibrating rod, and the second ultrasonic vibrating rod extends into the tank body 171. The second ultrasonic vibrating rod includes a plurality of third diameter rod segments and fourth diameter rod segments arranged alternately in sequence, and the diameters of the third diameter rod segments and the fourth diameter rod segments are different.

[0071] Specifically, by providing the second ultrasonic transducer 190, the uniformity of material mixing in the storage tank 170 can be further improved to prevent the slurry 250 from settling. The second ultrasonic vibration rod includes a third diameter rod segment and a fourth diameter rod segment of different diameters that are alternately arranged in sequence, which can improve the irregularity of the disturbance, diffuse the slurry 250 in multiple directions, and further improve the uniformity of the slurry 250 mixing.

[0072] In some embodiments, Figure 3 As shown, an infusion pump 200 is provided on the liquid inlet pipeline 101 and / or the liquid return pipeline 102 .

[0073] Specifically, the inlet pipeline 101 is provided with an infusion pump 200 for conveying the uniformly mixed slurry 250 in the storage tank 170 to the storage tank 100, and then performing the coating operation of the membrane 230. The return pipeline 102 is provided with an infusion pump 200 for recycling the slurry 250 in the storage tank 100 to the storage tank 170, so as to realize the recycling of the slurry 250 and save costs.

[0074] It can be understood that a first passing roller 210 is arranged above the coating roller 110, and the first passing roller 210 is arranged opposite to the coating roller 110, and a running gap for the diaphragm 230 is formed between the first passing roller 210 and the coating roller 110, and the diaphragm 230 to be processed can pass through the running gap of the diaphragm 230, and the upper and lower end surfaces of the diaphragm 230 are respectively in contact with the first passing roller 210 and the coating roller 110, so that the diaphragm 230 to be processed is driven by the first passing roller 210 and the coating roller 110 to run at a set speed according to the running trajectory of the diaphragm 230. The first roller 210 can preferably be a soft roller made of rubber material to avoid damage to the diaphragm 230; the rotation direction of the printing roller 110 is opposite to that of the first roller 210. The printing roller 110 passes through the storage tank 100 and the scraper 240 to remove the excess slurry 250, so that the slurry 250 is stored in the mesh pattern, so that when the diaphragm 230 to be processed contacts and cooperates with the first roller 210 in the running gap of the diaphragm 230, the slurry 250 is evenly applied to the surface of the diaphragm 230. A second roller 220 is also arranged above the printing roller 110, and the second roller 220 is staggered with the printing roller 110. The first roller 210 and the second roller 220 cooperate to provide a driving force for the diaphragm 230 to move forward.

[0075] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept of the utility model. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A printing and coating device, characterized in that: include: A material storage tank (100), wherein the material storage tank (100) is used to store slurry (250); A printing roller (110), wherein a partial area below the axis of the printing roller (110) is located in the material storage tank (100) and below the liquid level of the slurry (250); A stirring member (120), the stirring member (120) being arranged in the material storage tank (100) and located between the printing roller (110) and the bottom of the material storage tank (100), the stirring member (120) moving back and forth along the axial direction of the printing roller (110) to stir the slurry (250).

2. The printing and coating equipment according to claim 1, characterized in that: The distance between the stirring member (120) and the printing roller (110) is N, the distance between the stirring member (120) and the bottom surface of the material storage tank (100) is M, and N:M is (1:1)-(4:1).

3. The printing and coating equipment according to claim 2, characterized in that: The frequency of the reciprocating translation of the stirring member (120) is 50-300 times / min.

4. The printing and coating equipment according to claim 1, characterized in that: The stirring member (120) is connected to a stirring driving member, the stirring driving member comprises a stirring frame and a driving mechanism (140), wherein the stirring frame comprises a first stirring frame (130) and a second stirring frame (131) which are connected in a bent manner; The first stirring frame (130) is fixedly connected to the stirring member (120), the first stirring frame (130) is extended along the height direction of the material storage tank (100) and extends out of the upper end surface of the material storage tank (100); the second stirring frame (131) is extended along an axial direction perpendicular to the printing roller (110) and is extended toward the outside of the material storage tank (100); The driving mechanism (140) is connected to the second stirring frame (131) to drive the second stirring frame (131) to move linearly along the axial direction of the printing roller (110).

5. The printing and coating equipment according to claim 1, characterized in that: At least one first ultrasonic transducer (150) is arranged on the outer side of the bottom of the material storage tank (100), the first ultrasonic transducer (150) comprising a first ultrasonic vibration rod, the first ultrasonic vibration rod being fixedly connected to the bottom of the material storage tank (100); The first ultrasonic vibration rod comprises a plurality of first diameter rod segments and second diameter rod segments which are alternately arranged in sequence, and the diameter of the first diameter rod segment is different from the diameter of the second diameter rod segment.

6. The printing and coating equipment according to claim 1, characterized in that: A filter screen (160) is arranged in the material storage tank (100), and the filter screen (160) divides the cavity in the material storage tank (100) into a first space (103) and a second space (104); the printing roller (110) is arranged in the first space (103); and a liquid inlet pipeline (101) is arranged at the bottom of the material storage tank (100), and the liquid inlet pipeline (101) is connected to the second space (104).

7. The printing and coating equipment according to claim 6, characterized in that: The mesh size of the filter screen (160) is 100-500 meshes.

8. The printing and coating equipment according to claim 6, characterized in that: The printing and coating device further comprises a material storage tank (170), wherein the material storage tank (170) comprises a tank body (171), wherein the tank body (171) comprises a circular side wall (1711), wherein a frustum-shaped bottom wall (1712) is provided at the lower portion of the circular side wall (1711), wherein the frustum-shaped bottom wall (1712) is provided with a liquid discharge port, wherein the liquid discharge port is connected to the liquid inlet pipeline (101); A top wall (1713) is provided on the upper part of the circular side wall (1711), and a liquid inlet is provided on the top wall (1713); a liquid return pipeline (102) is provided at the bottom of the material storage tank (100) located in the second space (104), and the liquid return pipeline (102) is connected to the liquid inlet.

9. The printing and coating equipment according to claim 8, characterized in that: A stirring motor (180) is provided on the top wall (1713); the stirring motor (180) is connected to a stirring rod (181); and the stirring rod (181) extends into the tank body (171).

10. The printing and coating equipment according to claim 8 or 9, characterized in that: At least one second ultrasonic transducer (190) is arranged on the top wall (1713), and the second ultrasonic transducer (190) comprises a second ultrasonic vibration rod; the second ultrasonic vibration rod comprises a plurality of third diameter rod segments and fourth diameter rod segments that are alternately arranged in sequence, and the diameter of the third diameter rod segment is different from the diameter of the fourth diameter rod segment.

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