Screen printing equipment for multilayer ceramic capacitor

Abstract

The utility model relates to the technical field of multilayer ceramic capacitor manufacturing, and discloses a screen printing device of a multilayer ceramic capacitor, which comprises a screen printing plate provided with a target product area and auxiliary areas, and the auxiliary areas are arranged on two opposite sides of the target product area; the target product area is provided with a plurality of first slurry leakage holes matched with the patterns of the inner electrodes so that slurry can pass through the first slurry leakage holes to form the inner electrodes; second slurry leakage holes are formed in the two ends in the auxiliary area in the first direction correspondingly so that slurry can pass through the second slurry leakage holes to form a first cutting side line. A plurality of auxiliary sub-areas are arranged in the auxiliary area between the two second slurry leakage holes at intervals in the first direction, and the interval between every two adjacent auxiliary sub-areas is used for forming a second cutting side line; at least two third slurry leakage holes are formed in the auxiliary sub-area in the second direction at intervals so that slurry can pass through the third slurry leakage holes to form auxiliary pattern contrast blocks. The slurry permeation amount of the middle of the auxiliary area is reduced, and the situation that due to the fact that the tension of the middle is reduced and the slurry permeation amount is too large, the ceramic diaphragm adheres to the screen printing plate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of multilayer ceramic capacitor manufacturing, in particular to a screen printing device for multilayer ceramic capacitors. Background Art

[0002] The explosive growth of the wireless charging market has driven increased demand for low-loss, high-capacity multilayer ceramic capacitors (MLCCs), with demand for the 1206-C0G-100nF MLCC skyrocketing. Screen printing of capacitors consists of five key elements: a screen printing plate, squeegee, slurry, a printing table, and a ceramic diaphragm. When screen printing a multilayer ceramic capacitor, slurry is poured onto one end of the screen printing plate. A squeegee is used to apply pressure to the slurry area on the screen printing plate while moving the squeegee at a constant speed toward the other end. The slurry is squeezed through the mesh of the graphic portion of the screen printing plate and onto the ceramic diaphragm under the action of shear force. Screen printing utilizes the principle that the electrode slurry is permeable to the mesh in the graphic portion of the screen printing plate, while the non-graphic portion is impermeable to the mesh.

[0003] See Figure 1 and Figure 2 As shown, the screen pattern of the screen printing plate generally includes the target product area and the auxiliary area arranged around the target product area. In the printing process of large-size MLCC, the longitudinal length of the auxiliary pattern in the auxiliary pattern area is larger than the longitudinal length of the target product pattern in the target product area. As the slurry laying time increases, the viscosity of the slurry increases, the tension in the middle of the screen printing plate decreases, and the separation of the plate is delayed relative to the scraper stroke. The excessively large auxiliary pattern causes more electrode slurry to seep out, resulting in the ceramic diaphragm being easily adhered to the screen printing plate. Utility Model Content

[0004] The purpose of the utility model is to provide a screen printing device for multilayer ceramic capacitors to avoid the problem of ceramic diaphragms adhering to the screen printing plate due to excessive slurry penetration during the printing process of auxiliary graphics, thereby improving the printing qualification rate and reducing the cost waste of ceramic diaphragms.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a screen printing device for a multilayer ceramic capacitor, comprising a screen printing plate, wherein the screen printing plate has a first direction and a second direction perpendicular to each other;

[0007] The screen printing plate is provided with a target product area and an auxiliary area, and the auxiliary areas are provided on two opposite sides of the target product area in the second direction;

[0008] A plurality of first slurry leakage holes matching the inner electrode pattern are provided in the target product area to allow slurry to pass through to form the inner electrodes;

[0009] A second slurry leakage hole is provided at both ends of the auxiliary area along the first direction, so that the slurry can pass through to form a first cutting edge line; a plurality of sub-auxiliary areas are arranged at intervals along the first direction in the auxiliary area between the two second slurry leakage holes, and the intervals between adjacent sub-auxiliary areas are used to form a second cutting edge line; at least two third slurry leakage holes are provided at intervals along the second direction in each sub-auxiliary area to allow the slurry to pass through to form an auxiliary graphic reference block.

[0010] In some embodiments, the plurality of sub-auxiliary areas are divided into a first sub-auxiliary area and a second sub-auxiliary area, the first sub-auxiliary area and the second sub-auxiliary area are alternately arranged along the first direction, and the width of the third leakage hole adjacent to the target product area in the first sub-auxiliary area is not equal to the width of the third leakage hole adjacent to the target product area in the second sub-auxiliary area.

[0011] In some embodiments, the sub-auxiliary area adjacent to the second leakage hole is the first sub-auxiliary area, the width of the second leakage hole is a, the width of the third leakage hole in the second sub-auxiliary area is b1, and the spacing between two adjacent third leakage holes in the second sub-auxiliary area is b2, satisfying: b1+b2=a / 2.

[0012] In some embodiments, the width of the third grouting holes in the second sub-auxiliary area is b1, and the distance between two adjacent third grouting holes in the second sub-auxiliary area is b2, satisfying: b1=b2.

[0013] In some embodiments, a width of the third slurry leakage hole adjacent to the target product area in the first auxiliary sub-area is greater than a width of the third slurry leakage hole adjacent to the target product area in the second auxiliary sub-area.

[0014] In some embodiments, in the second direction, an edge of each of the third grouting holes is located on a side of the second cutting edge facing the second grouting hole.

[0015] In some embodiments, the width of the second slurry leakage hole is a, and the width of the first slurry leakage hole is b, satisfying: a=2b.

[0016] In some embodiments, a plurality of the first slurry leakage holes are arranged in a plurality of rows along the second direction, and the first slurry leakage holes in adjacent rows are staggered.

[0017] In some embodiments, a center line of the intervals between the first grouting holes in the same row extending along the second direction is located on part of the second cutting edge line; and a symmetric center of the first grouting hole is located on another part of the second cutting edge line.

[0018] In some embodiments, a fourth leakage hole is provided on one side of each row of the plurality of first leakage holes, and the fourth leakage holes in adjacent rows are provided on different sides of the plurality of first leakage holes; the length of the fourth leakage hole is 1 / 2 of the length of the third leakage hole.

[0019] Compared with the prior art, the screen printing device for multilayer ceramic capacitors according to the embodiment of the present invention has the following beneficial effects:

[0020] The screen printing apparatus for a multilayer ceramic capacitor according to an embodiment of the present invention comprises a target product area and an auxiliary area on a screen printing plate. A first slurry hole is provided in the target product area, a second slurry hole is provided in the auxiliary area, and multiple sub-auxiliary areas are arranged spaced apart along a first direction in the auxiliary area between the two second slurry holes. Each sub-auxiliary area is spaced apart along a second direction. During screen printing, slurry passes through the first slurry hole to form an internal electrode on a ceramic diaphragm. The slurry passes through the second slurry hole to form an auxiliary edge pattern on the ceramic diaphragm, which is used to form a first cutting edge. The slurry passes through the third slurry hole to form an auxiliary pattern reference block on the ceramic diaphragm. The ceramic diaphragms are stacked using the auxiliary pattern reference blocks, and the spaces between adjacent sub-auxiliary areas form a second cutting edge. The auxiliary pattern reference blocks are used to stack the ceramic diaphragms in multiple layers according to a predetermined offset. After applying pressure to form a block, the block is cut along the first and second cutting edges to form a capacitor chip blank.

[0021] Since the third leakage holes in the sub-auxiliary area located in the middle of the auxiliary area in the present application are arranged in plurality, the width of each third leakage hole is reduced compared to the case of arranging a whole block of leakage holes in the sub-auxiliary area. Accordingly, in the second direction, the spacing between adjacent third leakage holes is increased, thereby reducing the overall slurry penetration in the sub-auxiliary area, that is, reducing the slurry penetration in the middle of the auxiliary area, avoiding the ceramic diaphragm from adhering to the screen printing plate due to reduced tension in the middle and excessive slurry penetration, thereby improving the printing qualification rate and reducing the cost waste of the ceramic diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a silk screen printing plate in the prior art;

[0023] Figure 2 Schematic diagram of the amount of slurry penetration in the middle of the auxiliary area of ​​the screen printing plate in the prior art;

[0024] Figure 3 It is a schematic diagram of a screen printing plate in an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the amount of slurry penetration in the middle of the auxiliary area of ​​the screen printing plate in the embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of one-way printing of a screen printing plate in an embodiment of the present utility model;

[0027] Figure 6 It is a schematic diagram of the screen printing process in the embodiment of the present invention.

[0028] Numbers in the figure:

[0029] 1. Screen printing plate; 11. Target product area; 111. First slurry leakage hole; 1111. Third cutting edge; 112. Fourth slurry leakage hole; 12. Auxiliary area; 121. Second slurry leakage hole; 1211. First cutting edge; 122. Sub-auxiliary area; 1221. Third slurry leakage hole; 1222. Second cutting edge; 123. First sub-auxiliary area; 124. Second sub-auxiliary area.

[0030] 2. Ceramic diaphragm; 3. Slurry; 4. Workbench; 5. Scraper;

[0031] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0032] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] See Figure 3-Figure 6 As shown, the embodiment of the present invention provides a screen printing device for a multilayer ceramic capacitor, including a screen printing plate 1, the screen printing plate 1 having a first direction X and a second direction Y perpendicular to each other; a target product area 11 and an auxiliary area 12 are provided on the screen printing plate 1, and the auxiliary area 12 is provided on both sides of the target product area 11 on opposite sides in the second direction Y; a plurality of first slurry leakage holes 111 matching the inner electrode pattern are provided in the target product area 11 to allow the slurry 3 to pass through to form the inner electrode; second slurry leakage holes 111 are provided at both ends of the auxiliary area 12 along the first direction X. The holes 121 are provided to allow the slurry 3 to pass through to form a first cutting edge 1211, and the first cutting edge 1211 extends along the first direction X; the auxiliary area 12 between the two second slurry leakage holes 121 is provided with a plurality of sub-auxiliary areas 122 spaced apart along the first direction X, and the intervals between adjacent sub-auxiliary areas 122 are used to form a second cutting edge 1222, and the second cutting edge 1222 extends along the second direction Y; at least two third slurry leakage holes 1221 are spaced apart along the second direction Y in each sub-auxiliary area 122 to allow the slurry 3 to pass through to form an auxiliary pattern reference block.

[0036] During screen printing, slurry 3 passes through first slurry holes 111 to form internal electrodes on ceramic diaphragm 2. Slurry 3 passes through second slurry holes 121 to form auxiliary edge patterns on ceramic diaphragm 2. This auxiliary edge pattern forms first cutting edges 1211. Slurry 3 passes through third slurry holes 1221 to form auxiliary pattern reference blocks on ceramic diaphragm 2. The auxiliary pattern reference blocks are used to stack ceramic diaphragms 2, and the spaces between adjacent auxiliary sub-regions 122 form second cutting edges 1222. Multiple ceramic diaphragms 2 are stacked in multiple layers at a predetermined offset using the auxiliary pattern reference blocks. After pressure is applied to form a block, the block is cut along first and second cutting edges 1211, 1222, to form the chip body of the capacitor.

[0037] Because the third slurry holes 1221 in the sub-auxiliary region 122 located in the middle of the auxiliary region 12 in the present application are arranged at intervals, the width of each third slurry hole 1221 is reduced compared to a case where a block of slurry holes is provided in the sub-auxiliary region 122. Accordingly, in the second direction Y, the spacing between adjacent third slurry holes 1221 is increased, thereby reducing the overall slurry penetration within the sub-auxiliary region 122, that is, reducing the slurry penetration in the middle of the auxiliary region 12, and avoiding the ceramic diaphragm 2 adhering to the screen printing plate 1 due to reduced tension in the middle and excessive slurry penetration, thereby improving the printing pass rate and reducing the cost waste of the ceramic diaphragm 2. Moreover, the present application only needs to change the arrangement of the slurry holes in the middle of the auxiliary region 12, without changing the arrangement of the slurry holes at both ends of the auxiliary region 12, which does not affect the formation of the first cutting edge 1211 and thus does not affect the cutting of the block.

[0038] If the angle between the first direction X and the second direction Y is within the range of 89° to 91°, the first direction X and the second direction Y can be considered to be perpendicular to each other. Figure 3 As shown, in some embodiments, the screen printing plate 1 is rectangular, with the first direction X being the length of the screen printing plate 1, and the second direction Y being the width of the screen printing plate 1. The first slurry hole 111 is rectangular, matching the pattern of the internal electrode. The length of the first slurry hole 111 extends along the first direction X, and the width extends along the second direction Y. The second slurry hole 121 and the third slurry hole 1221 are both rectangular. The length of the second slurry hole 121 and the third slurry hole 1221 both extend along the first direction X, and the width of the second direction Y.

[0039] See Figure 3 As shown, in some embodiments, a plurality of first slurry holes 111 are arranged in multiple rows along the second direction Y, and a plurality of first slurry holes 111 are spaced apart in each row along the first direction X. The first slurry holes 111 in adjacent rows are staggered so that multiple pairs of internal electrodes can be formed after printing and cutting. The staggered arrangement specifically means that the center of the first slurry hole 111 is directly opposite the gap between two adjacent first slurry holes 111 in the adjacent row. The plurality of first slurry holes 111 are regularly arranged in multiple rows and evenly distributed within the target product area 11, so as to form a plurality of corresponding internal electrodes after printing and cutting. The spacing between the first slurry holes 111 in adjacent rows is used to form a third cutting edge 1111, which extends along the first direction X.

[0040] It should be noted that in this application, the first cutting edge line, the second cutting edge line and the third cutting edge line are all formed on the ceramic diaphragm according to the slurry penetration pattern of the leakage holes after the slurry is penetrated into the ceramic diaphragm through each leakage hole, so as to facilitate the cutting operation after the ceramic diaphragm is multi-layered.

[0041] See Figure 3As shown, in some embodiments, the centerline of the intervals between first paste holes 111 in the same row, extending along the second direction Y, lies on a portion of the second cutting edge 1222; the symmetric center of each first paste hole 111 lies on another portion of the second cutting edge 1222. After printing, when cutting along the second cutting edge 1222, one end of the formed internal electrode is flush with the chip body, while the other end of the internal electrode has a gap with the end of the chip body, meeting the requirements for capacitor production.

[0042] See Figure 3 As shown, in some embodiments, a fourth slurry hole 112 is further provided on one side of each row of the plurality of first slurry holes 111, and the fourth slurry holes 112 of adjacent rows are provided on different sides of the plurality of first slurry holes 111; the length of the fourth slurry hole 112 is 1 / 2 of the length of the third slurry hole 1221, thereby making full use of the first slurry holes 111 located at the edge to penetrate the slurry to form the inner electrode. Figure 3 Taking the arrangement of the paste holes on the screen printing plate 1 as an example, from bottom to top, the fourth paste holes 112 are arranged on the right side of the first row, the fourth paste holes 112 are arranged on the left side of the second row, and so on, and the fourth paste holes 112 are arranged in each row in sequence.

[0043] See Figure 3 As shown, in some embodiments, in the second direction Y, the edge of each third leakage hole 1221 is located on the side of the second cutting edge 1222 facing the second leakage hole 121, so as to avoid cutting the auxiliary graphic reference block formed by the leakage of the third leakage hole 1221 when cutting along the second cutting edge 1222.

[0044] See Figure 3 As shown, in some embodiments, in the second direction Y, the width of the second leakage hole 121 is a, and the width of the first leakage hole 111 is b, satisfying: a=2b, so that the width of the pattern formed by the leakage of slurry through the second leakage hole 121 is greater than the width of the pattern formed by the leakage of slurry through the first leakage hole 111, thereby facilitating the setting of the second cutting edge line 1222 according to the pattern formed by the leakage of slurry through the second leakage hole 121, facilitating the rapid separation of the chip blank and the edge material formed by printing in the auxiliary area 12 after cutting, and quickly screening out the edge material through the screen after cutting.

[0045] See Figure 3As shown, in some embodiments, the plurality of sub-auxiliary areas 122 are divided into first sub-auxiliary areas 123 and second sub-auxiliary areas 124. The first sub-auxiliary areas 123 and the second sub-auxiliary areas 124 are alternately arranged along the first direction X. The width of the third slurry leakage holes 1221 adjacent to the target product area 11 in the first sub-auxiliary area 123 and the width of the third slurry leakage holes 1221 adjacent to the target product area 11 in the second sub-auxiliary area 124 are not equal. A gap is provided between the first sub-auxiliary area 123 and the second sub-auxiliary area 124, and the gap is used to form a second cutting edge 1222.

[0046] This arrangement facilitates stacking of multiple ceramic diaphragms 2 according to a set number of offsets based on the auxiliary pattern reference blocks formed by the third leakage holes 1221. Since the first sub-auxiliary area 123 and the second sub-auxiliary area 124 have equal dimensions in the second direction Y, when the width of the third leakage holes 1221 adjacent to the target product area 11 in the first sub-auxiliary area 123 is unequal to the width of the third leakage holes 1221 adjacent to the target product area 11 in the second sub-auxiliary area 124, the arrangement of the multiple third leakage holes 1221 in the first sub-auxiliary area 123 differs from the arrangement of the multiple third leakage holes 1221 in the second sub-auxiliary area 124, wherein the arrangement includes the number of third leakage holes 1221 and the gap between adjacent third leakage holes 1221. For example, when the number of third grouting holes 1221 in the first auxiliary sub-region 123 and the second auxiliary sub-region 124 is the same, the spacing between adjacent third grouting holes 1221 or the width of the third grouting holes 1221 is different, resulting in different arrangement positions of the third grouting holes 1221 in adjacent first auxiliary sub-regions 123 and second auxiliary sub-regions 124, and different spacing between the third grouting holes 1221 away from the first grouting hole 111 and the adjacent second cutting edge 1222. When the spacing between adjacent third grouting holes 1221 or the width of the third grouting holes 1221 in the first auxiliary sub-region 123 and the second auxiliary sub-region 124 is the same, the number of third grouting holes 1221 is different. As shown in the figure, two third leakage holes 1221 are set in the first sub-auxiliary area 123, and two third leakage holes 1221 are set in the second sub-auxiliary area 124. The distance between the two third leakage holes 1221 in the first sub-auxiliary area 123 and the two third leakage holes 1221 in the second sub-auxiliary area 124 is equal. Since the widths of the third leakage holes 1221 close to the target product area 11 are not equal, the arrangement positions of the third leakage holes 1221 in the first sub-auxiliary area 123 and the second sub-auxiliary area 124 away from the target product area 11 are different.

[0047] In some embodiments, the width of the third slurry leakage holes 1221 adjacent to the target product area 11 in the first auxiliary sub-region 123 is greater than the width of the third slurry leakage holes 1221 adjacent to the target product area 11 in the second auxiliary sub-region 124. The widths of the other third slurry leakage holes 1221 in the first auxiliary sub-region 123 and the other third slurry leakage holes 1221 in the second auxiliary sub-region 124 may be equal or different.

[0048] See Figure 3 As shown, in some embodiments, the sub-auxiliary region 122 adjacent to the second grouting hole 121 is the first sub-auxiliary region 123. The width of the second grouting hole 121 is a, the width of the third grouting hole 1221 in the second sub-auxiliary region 124 is b1, and the spacing between two adjacent third grouting holes 1221 in the second sub-auxiliary region 124 is b2, satisfying the following: b1 + b2 = a / 2. This arrangement facilitates the arrangement of the third grouting holes 1221 in the second sub-auxiliary region 124. In some embodiments, the width of the third grouting hole 1221 in the second sub-auxiliary region 124 is b1, and the spacing between two adjacent third grouting holes 1221 in the second sub-auxiliary region 124 is b2, satisfying the following: b1 = b2.

[0049] It should be noted that in the present invention, the screen printing equipment for multilayer ceramic capacitors also includes necessary structures and components for screen printing, such as a scraper, ink, a printing table, a power transmission device, and a screen printing plate 1 fixing device, so as to realize the basic function of screen printing to prepare multilayer ceramic capacitors. It belongs to the existing technology and will not be described in detail in the present invention.

[0050] See Figure 4-Figure 6 As shown, the method for preparing a multilayer ceramic capacitor using the screen printing equipment of the above-mentioned multilayer ceramic capacitor is as follows: placing the ceramic diaphragm 2 on the workbench 4, printing the electrode slurry 3 on the ceramic diaphragm 2 through the above-mentioned screen printing plate 1, pouring the slurry 3 at one end of the screen printing plate 1, applying a certain pressure to the slurry 3 on the screen printing plate 1 with a scraper 5, and moving at a uniform speed toward the other end of the screen printing plate 1. Under the action of shear force, the slurry 3 is squeezed from the leakage hole of the screen printing plate 1 onto the ceramic diaphragm 2; on the ceramic diaphragm 2, the position corresponding to the first leakage hole 111 is penetrated with slurry to form the internal electrode of the target product, and the position corresponding to the second leakage hole 121 of the ceramic diaphragm 2 is penetrated with slurry to form a first cutting edge line 1211, and the corresponding auxiliary area 12 after cutting forms a side material product. Then, the ceramic diaphragm 2 with the electrode slurry 3 printed on it is peeled off; the printed ceramic diaphragms 2 are stacked together according to a certain offset; pressure is applied to form a block of laminated film; and the stacked block is cut into individual capacitor chip blanks along the first cutting edge 1211 and the second cutting edge 1222.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A screen printing device for multilayer ceramic capacitors, characterized in that: The screen printing plate comprises a first direction and a second direction perpendicular to each other; The screen printing plate is provided with a target product area and an auxiliary area, and the auxiliary areas are provided on two opposite sides of the target product area in the second direction; A plurality of first slurry leakage holes matching the inner electrode pattern are provided in the target product area to allow slurry to pass through to form the inner electrodes; A second slurry leakage hole is provided at both ends of the auxiliary area along the first direction, so that the slurry can pass through to form a first cutting edge line; a plurality of sub-auxiliary areas are arranged at intervals along the first direction in the auxiliary area between the two second slurry leakage holes, and the intervals between adjacent sub-auxiliary areas are used to form a second cutting edge line; at least two third slurry leakage holes are provided at intervals along the second direction in each sub-auxiliary area to allow the slurry to pass through to form an auxiliary graphic reference block.

2. The screen printing device for multilayer ceramic capacitors according to claim 1, wherein: The multiple sub-auxiliary areas are divided into first sub-auxiliary areas and second sub-auxiliary areas, the first sub-auxiliary areas and the second sub-auxiliary areas are alternately arranged along the first direction, and the width of the third leakage hole adjacent to the target product area in the first sub-auxiliary area is not equal to the width of the third leakage hole adjacent to the target product area in the second sub-auxiliary area.

3. The screen printing device for multilayer ceramic capacitors according to claim 2, wherein: The sub-auxiliary area adjacent to the second slurry leakage hole is the first sub-auxiliary area, the width of the second slurry leakage hole is a, the width of the third slurry leakage hole in the second sub-auxiliary area is b1, and the spacing between two adjacent third slurry leakage holes in the second sub-auxiliary area is b2, satisfying: b1+b2=a / 2.

4. The screen printing apparatus for multilayer ceramic capacitors according to claim 3, wherein: The width of the third grouting hole in the second sub-auxiliary area is b1, and the distance between two adjacent third grouting holes in the second sub-auxiliary area is b2, satisfying: b1=b2.

5. The screen printing apparatus for multilayer ceramic capacitors according to claim 2, wherein: The width of the third slurry leakage hole adjacent to the target product area in the first auxiliary sub-area is greater than the width of the third slurry leakage hole adjacent to the target product area in the second auxiliary sub-area.

6. The screen printing apparatus for multilayer ceramic capacitors according to claim 1, wherein In the second direction, the edge of each of the third grouting holes is located on the side of the second cutting edge facing the second grouting hole.

7. The screen printing apparatus for multilayer ceramic capacitors according to claim 1, wherein The width of the second slurry leakage hole is a, and the width of the first slurry leakage hole is b, satisfying: a=2b.

8. The screen printing apparatus for multilayer ceramic capacitors according to claim 1, wherein The plurality of first slurry leakage holes are arranged in a plurality of rows along the second direction, and the first slurry leakage holes in adjacent rows are staggered.

9. The screen printing apparatus for multilayer ceramic capacitors according to claim 8, wherein: The center line of the intervals between the first grouting holes in the same row extending along the second direction is located on part of the second cutting edge line; the symmetry center of the first grouting hole is located on another part of the second cutting edge line.

10. The screen printing apparatus for multilayer ceramic capacitors according to claim 9, wherein: A fourth leakage hole is further provided on one side of each row of the plurality of first leakage holes, and the fourth leakage holes in adjacent rows are provided on different sides of the plurality of first leakage holes; the length of the fourth leakage hole is 1 / 2 of the length of the third leakage hole.

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