Printing paste adding method of MLCC (multilayer ceramic capacitor)

Abstract

The invention relates to a printing paste adding method of an MLCC (multilayer ceramic capacitor), which comprises the following steps of: measuring a unit blank diaphragm before and after printing to obtain the weight of inner electrode paste consumed by a single diaphragm, and obtaining the inner electrode consumption of a current printing screen in real time in the subsequent printing process to realize accurate paste adding. The problems that the inner paste on the edge of the printing screen is dry due to excessive paste supplementation and the pattern of the inner electrode is lost due to too little paste supplementation are solved, and the printing quality of the inner electrode is improved.

Description

Technical Field

[0001] The present application relates to the technical field of MLCC printing, and in particular to a method for printing and slurrying MLCC. Background Art

[0002] MLCCs (Multi-layer Ceramic Capacitors), also known as multilayer capacitors or stacked capacitors, are the most widely used type of capacitor. They are made by stacking ceramic dielectric thin films with printed internal electrodes in an interlaced pattern. These sheets are then sintered at high temperatures to form a ceramic block, which is then sealed with external electrodes at both ends.

[0003] MLCC generally has the problem of difficult to control the amount of slurry added during the screen printing stage. Adding too much slurry can easily lead to dry slurry inside the edge, while adding too little slurry can easily lead to missing patterns. Summary of the Invention

[0004] Based on this, it is necessary to provide a printing and slurrying method for MLCC that can solve the above technical problems.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0006] The present application provides a method for printing and slurrying of MLCC, comprising the following steps:

[0007] Providing a unit blank film, weighing the film, and obtaining a first weight;

[0008] Printing inner electrodes on unit blank membranes;

[0009] Weighing the unit membrane after printing the inner electrode to obtain a second weight;

[0010] Obtaining a unit weight of the inner electrode paste printed on a unit blank film according to the first weight and the second weight;

[0011] Control the automatic slurry feeding mechanism to provide internal electrode slurry to the screen printing mechanism;

[0012] Controlling the screen printing mechanism to print the inner electrode on the blank diaphragm;

[0013] The printing volume of the screen printing mechanism is obtained, and when the printing volume reaches a preset slurry adding condition, the automatic slurry adding mechanism is controlled to add a preset weight of internal electrode slurry to the screen printing mechanism, wherein the preset weight is N times the unit weight.

[0014] In one embodiment, the automatic slurry feeding mechanism includes a slurry storage tank, an air source, a slurry feeding pipeline, and an electronic scale. The air source is connected to the interior of the slurry storage tank through the air source pipeline. One end of the slurry feeding pipeline extends into the slurry storage tank, and the other end is used to transport slurry to the screen printing mechanism. The electronic scale is provided at the bottom of the slurry storage tank for weighing the slurry storage tank.

[0015] Controlling the automatic slurry adding mechanism to add a preset weight of inner electrode slurry to the screen printing mechanism includes:

[0016] Obtaining the weight currently measured by the electronic scale;

[0017] Supplementing the inner electrode slurry to the screen printing mechanism through the slurry supply pipeline;

[0018] When the weight change measured by the electronic scale is equal to the preset weight, the replenishment of the inner electrode paste to the screen printing mechanism is stopped.

[0019] In one embodiment, the automatic slurry adding mechanism further includes a pressure sensor and a control valve, wherein the pressure sensor is provided on the slurry storage tank and is used to detect the pressure inside the slurry storage tank; the control valve is provided on the slurry adding pipeline;

[0020] Before obtaining the current weight of the electronic scale, the following steps are also included:

[0021] Detecting whether the pressure in the slurry storage tank reaches the set pressure through the pressure sensor;

[0022] Supplementing the inner electrode slurry to the screen printing mechanism through the slurry supply pipeline includes:

[0023] The control valve is opened to allow the slurry supply pipeline to replenish the inner electrode slurry to the screen printing mechanism through the control valve.

[0024] In one embodiment, opening the control valve to allow the slurry supply pipeline to replenish the inner electrode slurry to the screen printing mechanism includes:

[0025] Obtaining a weight change rate of the electronic scale;

[0026] The opening of the control valve is adjusted according to the weight change rate so that the weight change rate is equal to a preset slurry adding rate.

[0027] In one embodiment, the control valve is an automatic pressure control valve, which automatically opens when the pressure of the slurry adding pipeline reaches a set pressure.

[0028] In one embodiment, controlling the automatic slurry feeding mechanism to provide the inner electrode slurry to the screen printing mechanism includes:

[0029] The automatic slurry adding mechanism is controlled to provide the screen printing mechanism with an initial weight of the internal electrode slurry, the weight of which is M times the unit weight, wherein M>N.

[0030] In one embodiment, the printing amount is the number of printed blank films or the printing time after the previous slurrying.

[0031] In one embodiment, the following steps are also included:

[0032] Obtaining the total printing mesh area S and mesh height H of the printing screen of the current printing mechanism;

[0033] According to V=S*H, the total volume V of the slurry printed in the mesh is calculated;

[0034] Get the current density ρ of the inner electrode slurry;

[0035] According to M=ρ*V, the weight M of the paste printed in the mesh is obtained;

[0036] Comparing the weight M with the unit weight of the inner electrode paste printed on a unit blank membrane to obtain a deviation ratio K;

[0037] When the printing screen is replaced, the unit weight of the internal electrode paste printed by the new printing screen on the unit blank film is obtained based on the deviation ratio K and the calculated weight M of the paste in the mesh of the new printing screen.

[0038] This application has the following beneficial effects:

[0039] In the embodiment of the present application, the weight of the internal electrode slurry consumed by a single diaphragm is obtained by measuring the unit blank diaphragm before and after printing. In the subsequent printing process, the internal electrode consumption of the current printing screen can be known in real time, so that accurate slurry addition is achieved, avoiding problems such as dry slurry at the edge of the printing screen due to excessive slurry addition and missing internal electrode patterns due to insufficient slurry addition, thereby improving the printing quality of the internal electrode.

[0040] The present application can also calculate the total volume of the current printing screen mesh, and then calculate the weight of the slurry printed in the mesh based on the slurry density. After calculating the corresponding deviation ratio corresponding to the current printing screen, the deviation ratio is applied to the new printing screen after replacement, so that the unit weight of the printed internal electrode slurry corresponding to the new printing screen can be directly calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1This is a schematic diagram of the structure of an automatic slurry adding device in traditional technology;

[0042] Figure 2 Schematic diagram of the steps of a method for printing and slurrying MLCC in an exemplary embodiment;

[0043] Figure 3 This is a structural diagram of an automatic slurry adding device in one embodiment of the present application;

[0044] Figure 4 FIG. 1 is a schematic diagram of steps of a method for printing and slurrying MLCC in an exemplary embodiment.

[0045] Description of Figure Numbers:

[0046] 10. Printing and slurrying device for MLCC in traditional technology;

[0047] 11. Slurry storage tank; 12. Air source; 13. Slurry feeding pipeline;

[0048] 20. Screen printing organization;

[0049] 30. MLCC printing and slurrying device;

[0050] 31. Slurry storage tank; 32. Air source; 33. Slurry feeding pipeline; 34. Electronic scale; 35. Air source pipeline; 36. Pressure sensor; 37. Control valve. DETAILED DESCRIPTION

[0051] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar modifications without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a conventional MLCC printing and slurrying device 10. A slurry storage tank 11 stores internal electrode slurry. An air source 12 is connected to the interior of the slurry storage tank 11 via an air source pipe. One end of a slurry feeding pipe 13 extends into the slurry storage tank 11. The other end of the slurry feeding pipe 13 delivers the internal electrode slurry to a screen printing mechanism 20. Specifically, the internal electrode slurry is delivered to the screen printing mechanism's printing screen, where it is scraped through the mesh openings on the screen and printed onto the ceramic diaphragm by a scraper. Different printing screens correspond to different ceramic mesh openings, resulting in different printed internal electrode patterns and, ultimately, different MLCC products.

[0055] In conventional technology, slurry is added to the screen printing mechanism 20 by setting a fixed slurry addition pressure and a fixed slurry addition interval for the air source 12. When the viscosity of the internal slurry in the slurry storage tank 11 fluctuates, the amount of slurry added will fluctuate even with the same slurry addition pressure and slurry addition interval. Furthermore, when the weight of the internal slurry in the slurry storage tank 10 is inconsistent, the amount of slurry added will also vary even with the same slurry addition pressure and slurry addition interval. Consequently, accurate slurry addition cannot be achieved, resulting in excessive or insufficient slurry on the printing screen during printing, affecting the printed pattern and print thickness.

[0056] To address this technical problem, an embodiment of the present application provides a method for printing and slurrying of MLCC, which makes the amount of slurry added during the MLCC printing process more accurate and avoids excessive or insufficient slurrying.

[0057] like Figure 2 As shown, in one embodiment, the printing and slurrying method of MLCC includes the following steps:

[0058] S201: providing a unit blank membrane, weighing the membrane, and obtaining a first weight.

[0059] S202: Printing inner electrodes on the unit blank membrane.

[0060] S203: Weigh the unit membrane after printing the inner electrode to obtain a second weight.

[0061] During the printing process of MLCC, the ceramic diaphragm is usually transported in rolls, and the internal electrode pattern is printed on it during the transportation process. After the printing and drying process, the cutting mechanism will cut out each ceramic diaphragm along the cutting line on the printed internal electrode pattern, and use each cut ceramic diaphragm to carry out the subsequent lamination process. Therefore, the unit blank diaphragm of this embodiment can be a blank ceramic diaphragm cut according to the size of the (unprinted) cutting line, and its area is the same as the size of the ceramic diaphragm cut according to the cutting line after printing the internal electrode. In other examples, the size of the unit blank diaphragm can also be other set sizes, and its area can be larger than the area of ​​the internal electrode to be printed. For example, the ceramic diaphragm roll is cut only in the length direction of the set length, and not in the width direction, so that the cut unit blank diaphragm has the same width as the ceramic diaphragm roll, but the length is a set value.

[0062] In this embodiment, the unit blank membrane sheet is cut out from the ceramic membrane roll and then weighed accordingly. In other examples, the unit blank membrane sheet can also be manufactured and provided separately, thereby eliminating the need to cut from the ceramic membrane roll.

[0063] To facilitate cutting of the unit blank film and subsequent printing continuity, the unit blank film of this embodiment is preferably the film at the front end of a roll of ceramic film. The unit blank film for printing the inner electrode in step S202 can be the blank film from step S201 or the next uncut film on the ceramic film roll, as long as its size is the same as the previous unit blank film.

[0064] In this embodiment, after the inner electrode slurry is printed on a unit blank membrane, it is cut out from the ceramic membrane roll and subjected to corresponding weighing operations.

[0065] S204: Obtaining the unit weight of the internal electrode paste printed on the unit blank film according to the first weight and the second weight.

[0066] In this embodiment, the amount of inner electrode slurry consumed per unit blank membrane is obtained by subtracting the first weight from the second weight. Preferably, steps S201 to S204 can be repeated multiple times to calculate multiple weights and take the average value to obtain a more accurate unit weight.

[0067] S205: Control the automatic slurry adding mechanism to provide the inner electrode slurry to the screen printing mechanism.

[0068] S206: Control the screen printing mechanism to print the inner electrode on the blank diaphragm.

[0069] S207: Obtain the printing volume of the screen printing mechanism. When the printing volume reaches a preset slurry adding condition, control the automatic slurry adding mechanism to add a preset weight of internal electrode slurry to the screen printing mechanism, wherein the preset weight is N times the unit weight.

[0070] The print volume can specifically be the number of prints, the printing time, or the amount of slurry consumed. The number of prints can be directly obtained from the screen printing mechanism, while the printing time and the amount of slurry consumed can be calculated based on the number of prints and the set printing rate or the unit weight calculated in the previous step. The preset slurry addition condition can be that the print volume reaches a preset value after the previous slurry addition is completed.

[0071] For example, in one embodiment, after calculating the unit weight of the internal electrode paste printed on a unit blank film, the corresponding MLCC product single-sheet internal paste consumption weight and the slurry adding frequency (i.e., the preset slurry adding condition, such as 100g of internal paste is consumed every 100 sheets) are set in the system. After the system counts and prints 100 sheets, the preset slurry adding condition is reached. In this embodiment, the unit weight of the internal electrode paste printed on the unit blank film is 1g, and the preset weight of the internal electrode paste added to the screen printing mechanism by controlling the automatic slurry adding mechanism to be replenished to the screen printing mechanism at a single time is 100g. The preset weight of 100g is 100 times the unit weight, i.e., N=100. In other examples, N can also be other values, and integers or decimals can meet the requirements, preferably integers.

[0072] In this embodiment, reaching the preset slurry adding condition does not mean that the internal electrode slurry on the printing screen of the screen printing mechanism replenished last time has been consumed. A certain amount of internal electrode slurry must always be maintained on the printing screen to avoid missing printed patterns due to too little slurry.

[0073] Therefore, the preset weight of internal electrode slurry added by the automatic slurry adding mechanism in step S207 can be the same each time. Step S205 can be considered the first time the automatic slurry adding mechanism supplies slurry to the screen printing mechanism during this printing process. The weight of the slurry provided is M times the unit weight, where M > N. In other words, the initial slurry addition must be greater than the preset weight of each subsequent internal electrode slurry addition. The excess slurry amount is the amount of slurry remaining on the printing screen after each slurry addition.

[0074] In this embodiment, the internal electrode slurry is replenished to the screen printing mechanism by weight control. Specifically, the weight of the internal electrode slurry replenished can be determined by measuring the weight change of the internal electrode slurry in the slurry storage tank. In other examples, the weight of the internal electrode slurry replenished to the screen printing mechanism can be determined by detecting the flow rate of the internal electrode slurry in the slurry supply pipe and calculating the replenished weight based on the slurry density, or by other corresponding measurement methods.

[0075] In an embodiment of the present application, by measuring the unit blank diaphragm before and after printing, the weight of the internal electrode slurry consumed by a single diaphragm is obtained, and in the subsequent printing process, the internal electrode consumption of the current printing screen can be known in real time, so that accurate slurry addition is achieved, avoiding the generation of dry slurry at the edge of the printing screen due to excessive slurry addition, and avoiding the missing internal electrode pattern due to insufficient slurry addition, thereby improving the printing quality of the internal electrode.

[0076] In a preferred embodiment, Figure 3 As shown, the automatic slurry adding mechanism 30 of this embodiment includes a slurry storage tank 31, an air source 32, a slurry adding pipe 33 and an electronic scale 34. The air source 32 is connected to the interior of the slurry storage tank 31 through the air source pipe 35; one end of the slurry adding pipe 33 extends into the slurry storage tank 31, and the other end of the slurry adding pipe 33 is used to transport slurry to the screen printing mechanism 20; the electronic scale 34 is arranged at the bottom of the slurry storage tank 31, and is used to weigh the slurry storage tank 31 in real time. In this embodiment, a controller (not shown) is also included. The controller is connected to the various control components of the automatic slurry adding mechanism 30, and it can also be connected to the various components of the screen printing mechanism 20. It can be an independent control device, such as a PLC, a single-chip microcomputer, a control computer, etc., or it can be a control system that controls the manufacturing process of multiple MLCCs.

[0077] In this embodiment, controlling the automatic slurry adding mechanism in step S207 to add a preset weight of inner electrode slurry to the screen printing mechanism is performed by the controller and includes the following specific steps:

[0078] S2071: Get the weight currently measured by the electronic scale;

[0079] S2072: supplying inner electrode slurry to the screen printing mechanism through the slurry supply pipeline;

[0080] S2073: When the weight change measured by the electronic scale is equal to the preset weight, stop replenishing the inner electrode slurry to the screen printing mechanism.

[0081] In this embodiment, the controller obtains the weight measurement value of the electronic scale in real time, and obtains the real-time amount of slurry added by the automatic slurry adding mechanism to the screen printing mechanism according to the change in the weight measurement value, thereby accurately controlling the amount of slurry added.

[0082] In a preferred embodiment, Figure 3 As shown, the automatic slurry adding mechanism 30 further includes a pressure sensor 36 and a control valve 37 . The pressure sensor 36 is provided on the slurry storage tank 31 for detecting the pressure inside the slurry storage tank 31 ; the control valve 37 is provided on the slurry adding pipeline 33 .

[0083] In this embodiment, in order to overcome the influence of the air pressure change inside the slurry storage tank 31 on the weight of the slurry storage tank 31 and to measure more accurately, before obtaining the current weight of the electronic scale, the following steps are also included:

[0084] The pressure sensor is used to detect whether the pressure in the slurry storage tank reaches the set pressure.

[0085] The inner electrode paste is supplied to the screen printing mechanism through the paste supply pipeline, including:

[0086] Open the control valve to allow the slurry supply pipeline to replenish the inner electrode slurry to the screen printing mechanism through the control valve.

[0087] That is to say, in this embodiment, the control valve 37 is opened to add slurry only after the air pressure inside the slurry storage tank 31 reaches the set value, and the collected weight of the slurry storage tank 31 is the weight when the air pressure reaches the set value. Therefore, this embodiment can more accurately measure the weight before adding slurry when the slurry storage tank 31 does not always maintain a constant pressure state.

[0088] In order to make the slurry addition process more stable and avoid the instability of the slurry addition process caused by air pressure fluctuations or slurry viscosity fluctuations, in one embodiment, the control valve is opened to allow the slurry addition pipeline to replenish the inner electrode slurry to the screen printing mechanism, including:

[0089] Get the weight change rate of the electronic scale;

[0090] The opening of the control valve is adjusted according to the weight change rate so that the weight change rate is equal to the preset slurry addition rate.

[0091] In this embodiment, the slurry adding pipeline can be controlled to add slurry to the screen printing mechanism at a uniform speed, so that the slurry adding process is more stable.

[0092] In other embodiments, the control valve 37 may also be an automatic pressure control valve that automatically opens when the pressure in the slurry feeding pipeline 33 reaches a set pressure. The air pressure at which the automatic pressure control valve opens may be slightly higher than the air pressure detected by the pressure sensor 36.

[0093] Different MLCC products usually correspond to different printing screens. When changing to print different MLCC products, it is necessary to replace the printing screen used by the screen printing mechanism, and the unit weight of the internal electrode paste printed on the unit blank diaphragm needs to be recalculated.

[0094] During the production process, the algorithm of this embodiment can be used to calculate the unit weight of the internal electrode slurry printed on the ceramic diaphragm for each printing screen. In a preferred embodiment, the total volume of the mesh openings of the current printing screen can also be calculated, and the weight of the slurry printed in the mesh openings can be calculated based on the slurry density.

[0095] However, there is a corresponding deviation between the actual internal electrode printing height and the mesh height. Therefore, after calculating the unit weight of the printed internal electrode paste corresponding to the current printing screen and the deviation ratio between the weight of the paste printed in the mesh calculated based on the total volume deviation of the mesh, the deviation ratio can be applied to the replaced new printing screen, thereby directly calculating the unit weight of the printed internal electrode paste corresponding to the new printing screen.

[0096] Specifically, such as Figure 4 As shown, the printing and slurrying method of the MLCC of the embodiment of the present application further includes the following steps:

[0097] S401: Obtaining the total printing mesh area S and mesh height H of the printing screen of the current printing mechanism;

[0098] S402: Calculate the total volume V of the slurry printed in the mesh according to V=S*H;

[0099] S403: Obtain the current density ρ of the inner electrode slurry;

[0100] S404: According to M=ρ*V, the weight M of the slurry printed in the mesh is obtained;

[0101] S405: Compare the weight M with the unit weight of the inner electrode paste printed on the unit blank film to obtain a deviation ratio K;

[0102] S406: When the printing screen is replaced, the unit weight of the internal electrode paste printed by the new printing screen on the unit blank membrane is obtained according to the deviation ratio K and the calculated weight M of the paste in the mesh of the new printing screen.

[0103] The total mesh area S and mesh height H of the printing screen, as well as the internal electrode paste density ρ, can be directly obtained from production or design data. After setting the current internal electrode paste unit weight or calculating and setting a new internal electrode paste unit weight, adjustments can be made during operation based on the actual printing volume and paste addition amount.

[0104] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patented invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims, and the specification may be used to interpret the content of the claims.

Claims

1. A printing and slurrying method for MLCC, characterized in that: The steps include: Providing a unit blank film, weighing the film, and obtaining a first weight; Printing inner electrodes on unit blank membranes; Weighing the unit membrane after printing the inner electrode to obtain a second weight; Obtaining a unit weight of the inner electrode paste printed on a unit blank film according to the first weight and the second weight; Control the automatic slurry feeding mechanism to provide internal electrode slurry to the screen printing mechanism; Controlling the screen printing mechanism to print the inner electrode on the blank diaphragm; The printing volume of the screen printing mechanism is obtained, and when the printing volume reaches a preset slurry adding condition, the automatic slurry adding mechanism is controlled to add a preset weight of internal electrode slurry to the screen printing mechanism, wherein the preset weight is N times the unit weight.

2. The MLCC printing and slurrying method according to claim 1, characterized in that: The automatic slurry feeding mechanism includes a slurry storage tank, an air source, a slurry feeding pipeline, and an electronic scale. The air source is connected to the interior of the slurry storage tank through the air source pipeline. One end of the slurry feeding pipeline extends into the slurry storage tank, and the other end is used to transport slurry to the screen printing mechanism. The electronic scale is arranged at the bottom of the slurry storage tank for weighing the slurry storage tank. Controlling the automatic slurry adding mechanism to add a preset weight of inner electrode slurry to the screen printing mechanism includes: Obtaining the weight currently measured by the electronic scale; Supplementing the inner electrode slurry to the screen printing mechanism through the slurry supply pipeline; When the weight change measured by the electronic scale is equal to the preset weight, the replenishment of the inner electrode paste to the screen printing mechanism is stopped.

3. The printing and slurrying method of MLCC according to claim 2, characterized in that: The automatic slurry adding mechanism further includes a pressure sensor and a control valve. The pressure sensor is provided on the slurry storage tank and is used to detect the pressure inside the slurry storage tank. The control valve is provided on the slurry adding pipeline. Before obtaining the current weight of the electronic scale, the following steps are also included: Detecting whether the pressure in the slurry storage tank reaches the set pressure through the pressure sensor; Supplementing the inner electrode slurry to the screen printing mechanism through the slurry supply pipeline includes: The control valve is opened to allow the slurry supply pipeline to replenish the inner electrode slurry to the screen printing mechanism through the control valve.

4. The MLCC printing and slurrying method according to claim 3, characterized in that: Opening the control valve to allow the slurry supply pipeline to replenish the inner electrode slurry to the screen printing mechanism includes: Obtaining a weight change rate of the electronic scale; The opening of the control valve is adjusted according to the weight change rate so that the weight change rate is equal to a preset slurry adding rate.

5. The printing and slurrying method of MLCC according to claim 3, characterized in that: The control valve is an automatic pressure control valve, which automatically opens when the pressure of the slurry adding pipeline reaches a set pressure.

6. The MLCC printing and slurrying method according to claim 1, characterized in that: Control the automatic slurry feeding mechanism to provide internal electrode slurry to the screen printing mechanism, including: The automatic slurry adding mechanism is controlled to provide the screen printing mechanism with an initial weight of the internal electrode slurry, the weight of which is M times the unit weight, wherein M>N.

7. The MLCC printing and slurrying method according to claim 1, characterized in that: The printing volume is the number of printed blank membrane sheets or the printing time after the previous slurrying.

8. The MLCC printing and slurrying method according to claim 1, characterized in that: The following steps are also included: Obtaining the total printing mesh area S and mesh height H of the printing screen of the current printing mechanism; According to V=S*H, the total volume V of the slurry printed in the mesh is calculated; Get the current density ρ of the inner electrode slurry; According to M=ρ*V, the weight M of the paste printed in the mesh is obtained; Comparing the weight M with the unit weight of the inner electrode paste printed on a unit blank membrane to obtain a deviation ratio K; When the printing screen is replaced, the unit weight of the internal electrode paste printed by the new printing screen on the unit blank film is obtained based on the deviation ratio K and the calculated weight M of the paste in the mesh of the new printing screen.

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