Slurry supplying and filtering device of MLCC tape casting equipment

Abstract

The utility model discloses a slurry supply filtering device of MLCC casting equipment. The slurry supply filtering device comprises an annular gasket arranged at a slurry supply pipe joint, a filtering assembly fixed on the inner ring wall of the annular gasket, and a limiting ring arranged on the upper surface of the annular gasket and located between an inner ring and an outer ring of the annular gasket, the filtering assembly comprises an upper-layer filtering net and a lower-layer filtering net which are fixed on the inner ring wall of the annular gasket and are arranged in an up-down overlapping manner, and a supporting assembly arranged between the upper-layer filtering net and the lower-layer filtering net; meanwhile, a layer of circular filter cotton covers the inner part of the limiting ring and is positioned right above the upper-layer filter screen; the double-layer filtering device has the advantages that the structure is simple, the operation efficiency is high, blockage is reduced, the risk that the slurry supply pipe is broken is effectively reduced, slurry waste is reduced, meanwhile, the double-layer filtering precision is high, and therefore the yield of casting membranes is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the flow casting equipment technical field especially is related to a MLCC flow casting equipment slurry supply filter device. BACKGROUND

[0002] MLCC (Multi-layer Ceramic Capacitors) is the English abbreviation of chip multilayer ceramic capacitor, flow casting is also called tape casting or doctor blade method, which is a relatively mature forming method that can obtain high-quality and ultra-thin ceramic sheets. The basic principle is to inject slurry through the pressure cavity of the coating head. The top of the coating head has a thin slit. During coating, the slurry flows uniformly from the slit of the coating head and is coated on the surface of the base film after drying and forming.

[0003] Currently, during the filtration process of slurry supply in flow casting equipment, the method of inserting filter cotton into the slurry supply pipe is usually used for filtration. However, this method can easily cause slurry supply blockage. With the passage of time, the pressure in the supply pipe gradually increases, and in severe cases, it can even cause the supply pipe to rupture. SUMMARY

[0004] The utility model aims at: provide a kind of MLCC flow casting equipment slurry supply filter device, not only simple structure, high operating efficiency, but also reduce jam, effectively reduce the risk of slurry supply pipe rupture, reduce slurry waste, while, double-layer filtration precision is high, to improve the yield of flow casting film.

[0005] The technical scheme of the utility model is: a kind of MLCC flow casting equipment slurry supply filter device, including annular gasket being arranged at the joint of slurry supply pipe, filter assembly being fixed on the inner wall of annular gasket, and limiting ring being arranged on the upper surface of annular gasket and located between inner ring and outer ring thereof;Wherein the filter assembly includes upper layer filter screen and lower layer filter screen being fixed on the inner wall of annular gasket and arranged in upper and lower overlap, and support assembly being arranged between the upper layer filter screen and the lower layer filter screen;At the same time, a layer of circular filter cotton is covered in the inside of limiting ring and directly above the upper layer filter screen.

[0006] As a preferred technical scheme, the support assembly includes a connecting stud that passes through the center points of the upper layer filter screen and the lower layer filter screen longitudinally, a support ring that is arranged between the upper layer filter screen and the lower layer filter screen and is arranged with the same center as the connecting stud, and a plurality of support links for connecting the connecting stud and the support ring;And a nut is arranged on the top and bottom of the connecting stud respectively for fixing the upper layer filter screen and the lower layer filter screen.

[0007] As a preferred technical scheme, upper and lower clamping rings are arranged at the edges of the upper and lower filter screens respectively, and upper and lower clamping ring grooves are arranged on the inner ring wall of the annular gasket and matched with the upper and lower clamping rings; meanwhile, two upper and lower staggered and superimposed sealing gaskets are arranged between the upper and lower clamping rings.

[0008] As a preferred technical scheme, a positioning ring is arranged on the lower surface of the annular gasket between the inner ring and the outer ring, and an annular clamping groove is arranged on the upper surface of the slurry supply pipe joint and matched with the positioning ring.

[0009] As a preferred technical scheme, the inner ring aperture of the annular gasket is not less than the inner diameter of the slurry supply pipe joint.

[0010] As a preferred technical scheme, the annular gasket is made of polytetrafluoroethylene material.

[0011] As a preferred technical scheme, the upper filter screen, the lower filter screen and the support assembly are all made of 316 stainless steel material.

[0012] The advantages of the present application are:

[0013] 1. The slurry supply filtering device of the MLCC flow casting equipment has simple structure, high operation efficiency, reduces blockage, effectively reduces the risk of slurry supply pipe rupture, reduces slurry waste, has high double-layer filtering precision, and thus improves the yield of the flow casting membrane. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows, and the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0015] The present application will be further described in combination with the drawings and embodiments as follows:

[0016] Figure 1 is a structural sectional view of the present application;

[0017] Figure 2 is a structural plan view (with circular filter cotton) of the present application;

[0018] Figure 3 is a structural plan view (without circular filter cotton) of the present application;

[0019] Figure 4 is an assembly schematic view of the present application and the slurry supply pipe joint;

[0020] Wherein: 1 slurry supply pipe joint, 2 annular gasket;

[0021] 3 filter assembly;

[0022] 31 upper layer filter screen, 311 upper snap ring;

[0023] 32 lower layer filter screen, 321 lower snap ring;

[0024] 33 support assembly, 331 connecting stud, 332 support ring, 333 support link, 334 nut;

[0025] 34 sealing washer;

[0026] 4 limiting ring, 5 circular filter cotton, 6 upper snap ring groove, 7 lower snap ring groove, 8 positioning ring, 9 annular clamping groove. DETAILED DESCRIPTION

[0027] The above scheme will be further described in combination with specific examples. It should be understood that these examples are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not specified are usually the conditions in the conventional experiments.

[0028] Embodiment: Referring to Figures 1 to 4 the drawing, a slurry supply filter device for MLCC flow casting equipment includes an annular gasket 2 arranged at a slurry supply pipe joint 1, a filter assembly 3 fixed to the inner wall of the annular gasket 2, and a limiting ring 4 arranged on the upper surface of the annular gasket 2 and located between the inner ring and the outer ring thereof; wherein the filter assembly 3 includes an upper layer filter screen 31 and a lower layer filter screen 32 arranged in an upper and lower overlapping manner and fixed to the inner wall of the annular gasket 2, and a support assembly 33 arranged between the upper layer filter screen 31 and the lower layer filter screen 32. Meanwhile, a layer of circular filter cotton 5 is arranged inside the limiting ring 4 and directly above the upper layer filter screen 31.

[0029] Referring to Figure 1 and Figure 4 the drawing, in this embodiment, the support assembly 33 includes a connecting stud 331 longitudinally passing through the center points of the upper layer filter screen 31 and the lower layer filter screen 32, a support ring 332 arranged between the upper layer filter screen 31 and the lower layer filter screen 32 and arranged with the connecting stud 331 as a common center, and a plurality of support links 333 for connecting the connecting stud 331 and the support ring 332; and nuts 334 for fixing the upper layer filter screen 31 and the lower layer filter screen 32 are arranged at the top and the bottom of the connecting stud 331, respectively, to ensure the firmness of the filter assembly 3 and further improve the service life of the filter screen.

[0030] Referring to Figure 1 and Figure 4As shown, the upper and lower filter screens 31 and 32 in the embodiment are respectively provided with upper and lower clamping rings 311 and 321, and the inner ring wall of the annular gasket 2 is provided with upper and lower clamping ring grooves 6 and 7 matched with the upper and lower clamping rings 311 and 321; meanwhile, two upper and lower staggered sealing gaskets 34 are arranged between the upper and lower clamping rings 311 and 321.

[0031] With reference to Figure 4 As shown, the positioning ring 8 is arranged on the lower surface of the annular gasket 2 between the inner ring and the outer ring, and the annular clamping groove 9 matched with the positioning ring 8 is arranged on the upper surface of the slurry supply pipe joint 1, so that the annular gasket 2 and the slurry supply pipe joint 1 are quickly positioned and accurately connected.

[0032] With reference to Figure 1 and Figure 4 In the embodiment, the inner ring aperture of the annular gasket 2 is not less than the inner diameter of the slurry supply pipe joint 1.

[0033] In the embodiment, the annular gasket 2 is made of polytetrafluoroethylene material, which ensures that the slurry is not polluted.

[0034] In the embodiment, the upper and lower filter screens 31 and 32 and the support assembly 33 are made of 316 stainless steel, which further improves the service life of the filter assembly 3.

[0035] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An MLCC tape casting apparatus slurry feed filtration device, characterized by, The ring gasket is arranged at the slurry supply pipe joint, the filter assembly is fixed to the inner wall of the ring gasket, and the limiting ring is arranged on the upper surface of the ring gasket and between the inner ring and the outer ring of the ring gasket; the filter assembly comprises the upper filter screen and the lower filter screen which are arranged in an upper-lower overlapping mode and are fixed to the inner wall of the ring gasket, and the support assembly is arranged between the upper filter screen and the lower filter screen; and the circular filter cotton is arranged on the inner portion of the limiting ring and above the upper filter screen.

2. The MLCC tape casting apparatus slurry feed filtration device of claim 1, wherein, The support assembly comprises the connecting stud which longitudinally passes through the center points of the upper filter screen and the lower filter screen, the support ring which is arranged between the upper filter screen and the lower filter screen and is coaxial with the connecting stud, and the support connecting rods which are used for connecting the connecting stud and the support ring; and the nuts which are used for fixing the upper filter screen and the lower filter screen are arranged at the top and the bottom of the connecting stud.

3. The MLCC tape casting apparatus slurry feed filtration device of claim 1, wherein, The upper clamping ring and the lower clamping ring are arranged at the edges of the upper filter screen and the lower filter screen, respectively, and the upper clamping ring groove and the lower clamping ring groove which are matched with the upper clamping ring and the lower clamping ring are arranged on the inner wall of the ring gasket; and the two upper-lower staggered sealing washers are arranged between the upper clamping ring and the lower clamping ring.

4. The MLCC tape cast apparatus slurry feed filtration device of claim 1, wherein, The positioning ring is arranged on the lower surface of the ring gasket and between the inner ring and the outer ring of the ring gasket, and the annular clamping groove which is matched with the positioning ring is arranged on the upper surface of the slurry supply pipe joint.

5. The MLCC tape cast apparatus slurry feed filtration device of claim 1, wherein, The inner ring aperture of the ring gasket is not less than the inner diameter of the slurry supply pipe joint.

6. The MLCC tape cast apparatus slurry feed filtration device of claim 1, wherein, The ring gasket is made of polytetrafluoroethylene material.

7. The MLCC tape cast apparatus slurry feed filtration device of claim 1, wherein, The upper filter screen, the lower filter screen and the support assembly are made of 316 stainless steel material.

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