An end-sealing device for a chip-type three-terminal capacitive filter and an end-sealing method thereof

Abstract

This application provides a sealing device and method for a chip-type three-terminal capacitive filter. The sealing device includes a slurry-coating plate, a slurry-coating mechanism, and a driving mechanism. The slurry-coating plate has a through hole for exposing the exposed portion of the inner electrode at the waist. The slurry-coating mechanism includes a slurry-coating roller, a slurry-bearing structure, and a slurry tray. The slurry-bearing structure has a slurry groove for carrying the end slurry, and the slurry tray has a strip-shaped groove on the side of the slurry tray near the slurry-coating plate. The slurry-coating roller is used to transfer the end slurry. The driving mechanism is connected to the slurry-coating plate and the slurry-coating mechanism. The driving mechanism is used to drive the slurry-coating roller to pick up the end slurry from the slurry groove and drive the slurry tray to move above the slurry-coating roller so that the end slurry is placed in the strip-shaped groove. The driving mechanism is used to drive the slurry tray with the end slurry to move directly above the slurry-coating plate so that the end slurry in the strip-shaped groove is squeezed onto the corresponding exposed portion of the inner electrode at the waist, thereby achieving the sealing effect of the grounding electrode.

Description

Technical Field

[0001] This application relates to the field of chip component technology, specifically to a sealing device and sealing method for a chip three-terminal capacitive filter. Background Technology

[0002] To improve the high-frequency characteristics of multilayer ceramic chip capacitors, multilayer ceramic chip filters (MLCFs) were developed. Due to their high high-frequency characteristics and low equivalent series inductance (ESL), they are widely used in various fields.

[0003] Compared to conventional multilayer ceramic chip capacitors (MLCCs), MLCFs ​​have a pair of exposed electrodes in both their length and width directions, forming the input electrode and ground electrode, respectively. However, due to the presence of the ground electrode, when sealing the ceramic body, it is necessary to apply the end electrode not only to both ends of the ceramic body but also to the waist of the ceramic body. Therefore, the sealing equipment and process apparatus of conventional multilayer ceramic chip capacitors can only be used for sealing the input electrode and are not suitable for sealing the inner electrode of the exposed part of the ceramic body in three-terminal chip capacitor filters. A completely new processing equipment and process apparatus suitable for applying paste to the ground electrode of three-terminal chip capacitor filters needs to be developed. Summary of the Invention

[0004] In view of this, this application provides a sealing device and method for a chip three-terminal capacitor filter to achieve the sealing effect of the ground electrode of the chip three-terminal capacitor filter.

[0005] This application provides a sealing device for a chip-type three-terminal capacitor filter, comprising:

[0006] A paste-coating plate having through holes for carrying a chip three-terminal capacitive filter and for exposing the waist of the ceramic body of the chip three-terminal capacitive filter, the exposed portion of the waist containing the inner electrode.

[0007] The slurry dipping mechanism includes a slurry dipping roller, a slurry receiving structure, and a slurry tray. The slurry receiving structure has a slurry groove for carrying the end slurry. The slurry tray has a plurality of spaced-apart strip grooves, which are located on the side of the slurry tray near the slurry dipping plate. The slurry dipping roller is used to transfer the end slurry.

[0008] A driving mechanism is connected to the slurry plate and the slurry applicator. The driving mechanism is used to drive the slurry roller to pick up the end slurry in the slurry tank and drive the slurry tray to move above the slurry roller so that the end slurry is placed in the strip groove. The driving mechanism is also used to drive the slurry tray with the end slurry to move directly above the slurry plate so as to squeeze the end slurry in the strip groove onto the corresponding exposed portion of the inner electrode.

[0009] In some embodiments, the paste-coating plate includes a metal plate and a silicone layer disposed on the metal plate. The metal plate has a receiving hole penetrating the metal plate, and the silicone layer has a fixing hole penetrating the silicone layer. The diameter of the fixing hole is smaller than the diameter of the receiving hole, and the receiving hole and the fixing hole constitute the through hole.

[0010] In some embodiments, the sealing device of the chip three-terminal capacitive filter further includes a fixing member covering an opening on one side of the through hole, and an opening on the other side of the through hole for exposing a portion of the inner electrode exposed at the waist, wherein the slurry plate is at least one of a metal plate and a polymer plate layer.

[0011] In some embodiments, the fastener is an adhesive layer.

[0012] In some embodiments, the width of the strip groove is greater than the width of the exposed portion of the inner electrode at the waist.

[0013] In some embodiments, the sealing device of the chip three-terminal capacitive filter further includes a scraper connected to the driving mechanism, which is also used to drive the scraper to scrape the end paste on the surface of the paste tray into the strip groove.

[0014] In some embodiments, a plurality of spaced recessed grooves are provided on one side of the scraper, and the side of the scraper with the recessed grooves is disposed opposite to the strip groove, with the recessed grooves and the strip grooves corresponding one-to-one.

[0015] In some embodiments, the sealing device of the chip three-terminal capacitive filter further includes a slurry application table, the slurry application table having a positioning element, and the slurry application plate also having a positioning hole penetrating the slurry application plate, the positioning element engaging with the positioning hole.

[0016] In some embodiments, the slurry tray includes a metal layer and a rubber layer disposed on the metal layer, the rubber layer being disposed on the side of the metal layer near the slurry plate, and the strip groove being disposed on the rubber layer.

[0017] In some embodiments, the spacing and depth of every two adjacent strip grooves are equal.

[0018] This application also provides a sealing method for a chip three-terminal capacitor filter, which uses the sealing device for the chip three-terminal capacitor filter described above for sealing. The sealing method includes:

[0019] A chip three-terminal capacitive filter is placed in the through hole of the adhesive plate to fix the chip three-terminal capacitive filter and expose the exposed portion of the inner electrode at the waist of the chip three-terminal capacitive filter.

[0020] The dip roller is driven to pick up the end paste in the paste tank, and the paste tray is driven to move above the dip roller so that the end paste on the dip roller is placed in the strip groove;

[0021] The drive plate with the end paste is brought close to the paste plate, and the end paste in the strip groove is squeezed onto the corresponding exposed part of the inner electrode, thus completing the sealing of the ground electrode of the plate three-terminal capacitive filter.

[0022] In some embodiments, driving the slurry roller to pick up the end slurry from the slurry tank and driving the slurry tray to move above the slurry roller to place the end slurry on the slurry roller into the strip groove includes:

[0023] The dip roller is driven to pick up the end paste from the paste tank, and the paste tray is driven to move above the dip roller. The dip roller is driven to roll on the paste tray to coat the end paste on the surface of the paste tray with the strip groove.

[0024] The end paste on the surface of the paste tray is scraped into the strip groove using a scraper.

[0025] This application provides a sealing device and a sealing method for a chip three-terminal capacitive filter. The sealing device includes a slurry-coating plate, a slurry-coating mechanism, and a driving mechanism. The slurry-coating plate has through holes for supporting the chip three-terminal capacitive filter and for exposing the waist portion of the ceramic body of the chip three-terminal capacitive filter, with the exposed portion of the waist portion containing the inner electrode. The slurry-coating mechanism includes a slurry-coating roller, a slurry-bearing structure, and a slurry tray. The slurry-bearing structure has slurry grooves for carrying the sealing slurry, and the slurry tray has multiple spaced strips. The groove, a strip-shaped groove, is set on the side of the slurry tray near the slurry plate. The slurry roller is used to transfer the end slurry. The drive mechanism is connected to the slurry plate and the slurry mechanism. The drive mechanism is used to drive the slurry roller to pick up the end slurry in the slurry tank and drive the slurry tray to move above the slurry roller so that the end slurry is placed in the strip-shaped groove. The drive mechanism is used to drive the slurry tray with the end slurry to move directly above the slurry plate so that the end slurry in the strip-shaped groove is squeezed onto the corresponding exposed part of the inner electrode to achieve the sealing effect of the ground electrode of the chip three-terminal capacitive filter. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the sealing device of the chip three-terminal capacitor filter provided in this application;

[0028] Figure 2 yes Figure 1 A schematic diagram of the sealing device at point C of the chip three-terminal capacitor filter;

[0029] Figure 3 This is a schematic diagram of the structure of the chip three-terminal capacitor filter provided in this application;

[0030] Figure 4 A schematic diagram of the structure of the chip three-terminal capacitor filter and the strip groove in the sealing device of the chip three-terminal capacitor filter provided in this application during the sealing process;

[0031] Figure 5 This is a flowchart illustrating the sealing method for the chip three-terminal capacitor filter provided in this application.

[0032] Figure label:

[0033] 10. End-sealing device; 20. Chip-type three-terminal capacitor filter; 21. Ceramic body; 211. Partial internal electrode; 22. Input electrode; 23. Grounding electrode; 100. Dipping plate; 110. Carrier plate; 120. Positioning hole; 130. Through hole; 140. Reinforcing hole; 200. Dipping mechanism; 210. Dipping tray; 220. Strip groove; 230. Dipping structure. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the absence of conflict, the following embodiments and their technical features can be combined with each other.

[0035] This application provides a sealing device for a chip three-terminal capacitive filter. The sealing device includes a slurry-coating plate, a slurry-coating mechanism, and a driving mechanism. The slurry-coating plate has a through hole for supporting the chip three-terminal capacitive filter and for exposing the waist portion of the ceramic body of the chip three-terminal capacitive filter, with the exposed portion of the waist portion containing the inner electrode. The slurry-coating mechanism includes a slurry-coating roller, a slurry-bearing structure, and a slurry tray. The slurry-bearing structure has a slurry groove for carrying the end slurry, and the slurry tray has multiple spaced-apart strip-shaped grooves on the side of the slurry tray near the slurry-coating plate. The slurry-coating roller is used to transfer the end slurry. The driving mechanism is connected to the slurry-coating plate and the slurry-coating mechanism. The driving mechanism is used to drive the slurry-coating roller to pick up the end slurry from the slurry groove and to drive the slurry tray to move above the slurry-coating roller so that the end slurry is placed in the strip-shaped groove. The driving mechanism is also used to drive the slurry tray containing the end slurry to move directly above the slurry-coating plate so that the end slurry in the strip-shaped groove is squeezed onto the corresponding exposed portion of the inner electrode in the waist portion.

[0036] In this application, a novel sealing device for a chip-type three-terminal capacitive filter is designed. The sealing device is mainly composed of a slurry plate, a slurry-slurry mechanism, and a driving mechanism. A strip-shaped groove for receiving the sealing slurry is provided on the slurry plate, so that the sealing slurry in the slurry tank can be transferred to the strip-shaped groove by the slurry-slurry roller. The sealing slurry is squeezed out of the strip-shaped groove, so that the sealing slurry in the strip-shaped groove can be quickly adhered to the exposed inner electrode of the waist of the ceramic body to form a corresponding ground electrode. This achieves the purpose of sealing the exposed inner electrode of the waist of the ceramic body, and achieves sealing effects such as uniform and dense film layer of the ground electrode or film layer that can completely cover the exposed inner electrode of the waist. This shortens the production cycle of the chip-type three-terminal capacitive filter and reduces the production cost of the chip-type three-terminal capacitive filter.

[0037] Please refer to Figures 1-4 , Figure 1 This is a schematic diagram of the sealing device of the chip three-terminal capacitor filter provided in this application; Figure 2 yes Figure 1 A schematic diagram of the sealing device at point C of the chip three-terminal capacitor filter; Figure 3 This is a schematic diagram of the structure of the chip three-terminal capacitor filter provided in this application; Figure 4 This is a schematic diagram of the structure of the chip three-terminal capacitor filter and the strip groove in the sealing device of the chip three-terminal capacitor filter provided in this application during the sealing process. This application provides a sealing device 10 for a chip three-terminal capacitor filter, which includes a paste-coating plate 100, a paste-coating mechanism 200, and a driving mechanism. Detailed description follows.

[0038] The chip three-terminal capacitive filter 20 is composed of a ceramic body 21, an input electrode 22 and a ground electrode 23. The two opposite ends of the ceramic body 21 form opposite and spaced input electrodes 22. A portion of the inner electrode is exposed on the waist of the ceramic body 21. The area of ​​the exposed inner electrode forms the opposite ground electrode 23. The ceramic body 21 is composed of an inner electrode covered by a dielectric layer.

[0039] The slurry-coating plate 100 has through holes 130 for supporting a chip three-terminal capacitive filter 20 and exposing the waist portion of the ceramic body of the chip three-terminal capacitive filter, with the exposed portion of the waist portion containing internal electrodes 211. Specifically, the slurry-coating plate 100 includes a carrier plate 110 and through holes 130. The carrier plate 110 has a plurality of arrayed through holes 130 for supporting the ceramic body 21 and exposing the waist portion of the ceramic body 21, with the exposed portions of the internal electrodes on both sides of the waist portion. The planar shape of the through holes 130 can be at least one of rectangle, circle, regular polygon, and irregular polygon. Further, the slurry-coating plate 100 is provided with positioning holes 120 penetrating through the slurry-coating plate 100, the positioning holes 120 being positioned at the edge of the slurry-coating plate 100 and spaced apart from the through holes 130. The adhesive plate 100 also includes a reinforcing hole 140 penetrating the adhesive plate 100. The reinforcing hole 140 is surrounded by a through hole 130 and is used to reinforce the adhesive plate 100. The adhesive plate 100 includes a metal plate and a silicone layer, also called a thin adhesive plate, disposed on the metal plate. The metal plate has a receiving hole penetrating the metal plate, and the silicone layer has a fixing hole penetrating the silicone layer. The fixing hole is used to fix the chip-type three-terminal capacitor filter 20. The diameter of the fixing hole is smaller than the diameter of the receiving hole, and the receiving hole and the fixing hole are connected to form a through hole 130.

[0040] The drive mechanism is connected to the slurry-dipping plate 100 and the slurry-dipping mechanism 200. The slurry-dipping mechanism 200 includes a slurry-dipping roller, a slurry-bearing structure 230, a scraper, a temperature control system, a slurry-dipping table, and a slurry tray 210. The drive mechanism consists of multiple drive sub-mechanisms, each of which is connected to components in the end-sealing device 10, such as the slurry-dipping table, slurry-dipping roller, slurry-bearing structure 230, scraper, temperature control system, slurry-dipping table, and slurry tray 210, to drive their corresponding movements. The slurry-bearing structure 230 has a slurry groove for carrying the end slurry, and the slurry-bearing structure 230 is made of metal alloy and rubber.

[0041] The slurry tray 210 has multiple spaced-apart strip-shaped grooves 220, which are located on the side of the slurry tray 210 near the slurry-coating plate 100. Further, the slurry tray 210 is composed of a metal layer and a rubber layer disposed on the metal layer. The metal layer supports the rubber layer and is connected to the drive mechanism of the drive mechanism. The rubber layer is located on the side of the metal layer near the slurry-coating plate 100. The strip-shaped grooves 220 are disposed on the rubber layer and are used to support the drive mechanism in the drive mechanism to drive the slurry-coating roller to pick up the end slurry from the slurry tank. During the operation of the sealing device 10, the strip-shaped grooves 220 correspond to the through holes 130 on the slurry-coating plate 100 where ceramic bodies 21 are provided. Optionally, each strip groove 220 may correspond to a through hole 130 on the slurry plate 100 where a ceramic body 21 is provided, or each strip groove 220 may correspond to multiple through holes 130 on the slurry plate 100 where a ceramic body 21 is provided. In this embodiment, the example of each strip groove 220 corresponding to multiple through holes 130 on the slurry plate 100 where a ceramic body 21 is provided is used for illustration.

[0042] The slurry roller is used to transfer the end slurry. Specifically, during the operation of the sealing device 10, the drive mechanism of the drive sub-mechanism drives the slurry roller to pick up the end slurry from the slurry tank and drives the slurry tray 210 to move above the slurry roller. At the same time, the slurry roller is driven to roll on the rubber layer so that a layer of end slurry is coated on the rubber layer. The drive scraper scrapes the end slurry on the surface of the rubber layer into the strip groove 220 so that the end slurry is placed in the strip groove 220, and the excess end slurry is scraped back into the slurry tank. The slurry plate has a positioning element that engages with the positioning hole 120. The constant temperature system is set below or around the slurry-bearing structure 230 to ensure that the end slurry temperature on the slurry-bearing structure 230 can reach the sealing requirements, thereby ensuring the sealing effect such as uniform and dense film layer of the ground electrode 23 of the chip three-terminal capacitor filter 20 or that the film layer can completely cover the exposed part of the inner electrode 211 at the waist, thus ensuring the reliability of the sealing of the chip three-terminal capacitor filter 20.

[0043] In this application, a novel sealing device 10 for a chip-type three-terminal capacitive filter is designed. The sealing device 10 is mainly composed of a slurry-adhesive plate 100, a slurry-adhesive mechanism 200, and a drive mechanism. A strip-shaped groove 220 for receiving the end paste is provided on the slurry tray 210. This allows the end paste in the slurry tank to be transferred to the strip-shaped groove 220 by the slurry-adhesive roller. By squeezing the end paste out of the strip-shaped groove 220, the end paste in the strip-shaped groove 220 can be quickly adhered to the exposed portion of the inner electrode at the waist of the ceramic body 21. On 211, a corresponding grounding electrode 23 is formed, thereby achieving the purpose of sealing the exposed portion of the inner electrode 211 on the waist of the ceramic body 21, and achieving sealing effects such as uniform and dense film layer of grounding electrode 23 or film layer that can completely cover the exposed portion of the inner electrode 211 on the waist. At the same time, the sealing efficiency of grounding electrode 23 of chip three-terminal capacitor filter 20 is improved, thereby shortening the production cycle of chip three-terminal capacitor filter 20 and reducing the production cost of chip three-terminal capacitor filter 20.

[0044] In this application, a scraper is used to scrape the end paste from the surface of the rubber layer into the strip groove 220 to ensure that there is enough end paste in the strip groove 220, thereby ensuring that the end paste adhering to the ceramic body 21 meets the requirements, thereby further ensuring the sealing efficiency of the chip three-terminal capacitor filter 20, and further ensuring the sealing reliability of the chip three-terminal capacitor filter 20.

[0045] In this application, the paste plate 100 is composed of a metal plate and a silicone layer disposed on the metal plate, and the diameter of the fixing hole is set to be smaller than the diameter of the receiving hole, so that the fixing hole can better fix the chip three-terminal capacitor filter 20.

[0046] In this application, by providing a positioning element on the slurry application table and providing a positioning hole 120 on the slurry application plate 100 that engages with the positioning element, the slurry application plate 100 can be better fixed on the slurry application table, preventing the slurry application plate 100 from moving during operation, which would cause the slurry application plate 100 to not correspond to the slurry tray 210, and thus prevent the end slurry from adhering to the exposed inner electrode 211 position on the waist of the corresponding chip three-terminal capacitor filter 20. This reduces the rework time of the chip three-terminal capacitor filter 20, thereby further improving the end-sealing efficiency of the chip three-terminal capacitor filter 20.

[0047] In one embodiment, the width r of the strip groove 220 is greater than the width d of the exposed portion of the inner electrode 211 at the waist, so that during the operation of the sealing device 10, the end paste can completely cover the exposed portion of the inner electrode 211 at the waist of the ceramic body 21, thereby further ensuring the sealing effect of the chip three-terminal capacitive filter 20, and thus ensuring the reliability of the sealing of the chip three-terminal capacitive filter 20.

[0048] In one embodiment, the spacing and depth of each pair of adjacent strip grooves 220 are equal to ensure that the thickness of the end paste adhered on the ceramic body 21 is equal, thereby improving the sealing efficiency and sealing effect of the chip three-terminal capacitor filter 20.

[0049] In one embodiment, a plurality of recessed grooves corresponding to the strip groove 220 are provided on one side of the scraper to further ensure that there is enough end paste in the strip groove 220, thereby ensuring that the end paste adhering to the ceramic body 21 meets the requirements, thereby further ensuring the sealing effect of the chip three-terminal capacitor filter 20, and further ensuring the reliability of the sealing of the chip three-terminal capacitor filter 20.

[0050] In one embodiment, the sealing device 10 of the chip three-terminal capacitor filter further includes a shaking machine and an inlet plate. The inlet plate has an inlet hole corresponding to the through hole 130, and the diameter of the inlet hole is larger than the diameter of the through hole 130. The ceramic body 21 can enter the inlet plate through the vibration of the shaking machine. In this application, by setting the shaking machine and the inlet plate, the efficiency of the ceramic body 21 entering the slurry plate 100 is improved, thereby further improving the sealing efficiency of the chip three-terminal capacitor filter 20 and further reducing the cost. In addition, setting the diameter of the inlet hole to be larger than the diameter of the through hole 130 further improves the efficiency of the ceramic body 21 entering the slurry plate 100, thereby further improving the sealing efficiency of the chip three-terminal capacitor filter 20 and further reducing the cost.

[0051] In one embodiment, the sealing device 10 of the chip three-terminal capacitor filter further includes a needle bed and a leveling machine. The leveling machine is used to level the height of the ceramic body 21 in the slurry plate 100, that is, to press the ceramic body 21 in the plate into the through hole 130 of the slurry plate 100 through the needle bed, and to make the thickness surface of the ceramic body 21 face upward. After passing through the leveling machine, it can be ensured that the height of each ceramic body 21 exposed is consistent, thereby ensuring that the amount of end paste adhered to each ceramic body 21 is consistent, thereby further ensuring the sealing efficiency of the chip three-terminal capacitor filter 20, and further ensuring the reliability of the sealing of the chip three-terminal capacitor filter 20.

[0052] In one embodiment, the sealing device 10 of the chip three-terminal capacitor filter further includes a material cage in which the slurry plate 100 with the ceramic body 21 embedded is placed, so that multiple sets of slurry plates 100 can be transported in one operation, thereby further ensuring the sealing efficiency of the chip three-terminal capacitor filter 20 and further ensuring the sealing reliability of the chip three-terminal capacitor filter 20.

[0053] In one embodiment, the sealing device 10 of the chip three-terminal capacitor filter further includes a conveying device consisting of multiple suction nozzles, which is used to move the implanted slurry plate 100 from the material cage to the slurry table without manual handling, thereby further ensuring the sealing efficiency of the chip three-terminal capacitor filter 20 and further ensuring the sealing reliability of the chip three-terminal capacitor filter 20.

[0054] In one embodiment, the sealing device 10 of the chip three-terminal capacitor filter further includes a drying device for heating and drying the adhesive plate 100 coated with end paste to shorten the curing time of the end paste, thereby further ensuring the sealing efficiency of the chip three-terminal capacitor filter 20 and further ensuring the sealing reliability of the chip three-terminal capacitor filter 20.

[0055] In another embodiment, the sealing device 10 of the chip three-terminal capacitive filter further includes a fixing member covering an opening on one side of the through hole 130. An opening on the other side of the through hole 130 exposes the exposed portion of the inner electrode 211 at the waist of the chip three-terminal capacitive filter 20. The adhesive plate 100 is at least one of a metal plate and a polymer plate layer, also known as a JIG plate, metal plate, sealing plate, or CP plate, etc. That is, the adhesive plate 100 is not a thin adhesive plate, but rather a JIG plate, metal plate, or CP plate is used instead of a thin adhesive plate. A fixing member for fixing the chip three-terminal capacitive filter 20 is provided at an opening on the other side of the through hole 130, and the opening on the other side of the through hole 130 exposes the exposed inner electrode 211 at the waist of the chip three-terminal capacitive filter 20. Optionally, the fixing member is an adhesive layer.

[0056] This application also provides a sealing method for a chip three-terminal capacitor filter, which uses the sealing device for the chip three-terminal capacitor filter provided in this application for sealing. The sealing method includes:

[0057] S11. Place the chip three-terminal capacitor filter in the through hole of the slurry plate to fix the chip three-terminal capacitor filter and expose the exposed part of the inner electrode of the waist of the chip three-terminal capacitor filter.

[0058] S12. Drive the slurry roller to pick up the end slurry in the slurry tank, and drive the slurry tray to move above the slurry roller so that the end slurry on the slurry roller is placed in the strip groove.

[0059] S13. Drive the slurry tray with end slurry and the slurry plate to approach each other, and squeeze the end slurry in the strip groove onto the corresponding exposed part of the inner electrode, thus completing the sealing of the ground electrode of the plate three-terminal capacitive filter.

[0060] In this application, a novel sealing device for a chip-type three-terminal capacitive filter is designed. The sealing device is mainly composed of a slurry plate, a slurry-slurry mechanism, and a drive mechanism. A strip-shaped groove for receiving the sealing slurry is provided on the slurry plate, so that the sealing slurry in the slurry tank can be transferred to the strip-shaped groove by the slurry-slurry roller. The sealing slurry is squeezed out of the strip-shaped groove, so that the sealing slurry in the strip-shaped groove can be quickly adhered to the exposed inner electrode of the waist of the ceramic body to form a corresponding ground electrode. This achieves the purpose of sealing the exposed inner electrode of the waist of the ceramic body, and achieves sealing effects such as uniform and dense film layer of the ground electrode or film layer that can completely cover the exposed inner electrode of the waist. At the same time, it can improve the sealing efficiency of the chip-type three-terminal capacitive filter, thereby shortening the production cycle of the chip-type three-terminal capacitive filter and reducing the production cost of the chip-type three-terminal capacitive filter.

[0061] Please see Figure 5 , Figure 5 This is a flowchart illustrating the sealing method for a chip three-terminal capacitor filter provided in this application. This application also provides a sealing method for a chip three-terminal capacitor filter, using the sealing device 10 for the chip three-terminal capacitor filter provided in this application. The sealing method includes:

[0062] S11. Place the chip three-terminal capacitor filter in the through hole of the slurry plate to fix the chip three-terminal capacitor filter and expose the exposed part of the inner electrode of the waist of the chip three-terminal capacitor filter.

[0063] Specifically, the chamfered ceramic body 21 is inserted into the inlet hole of the inlet plate; then, the thin plastic sheet and the inlet plate are placed together on the pressure table of the needle bed, and the ceramic body 21 in the inlet plate is pressed into the through hole 130 in the thin plastic sheet. The ceramic body 21 is fixed in the through hole 130 by the silicone layer on the thin plastic sheet. One side of the through hole 130 is open to expose the part of the inner electrode 211 exposed on the waist side, and the other side of the through hole 130 is open to expose the part of the inner electrode 211 exposed on the other side of the waist side. The ceramic body 21 is fixed by contact with the silicone layer; then, the thin plastic sheet after pressing in the ceramic body 21 is placed under the leveling machine to level the height of the ceramic body 21, so that the part of the inner electrode 211 exposed on the waist side of the ceramic body 21 faces upward. The thin plastic sheet with the ceramic body 21 is placed into the material cage; then, the material cage is placed in the fixed position of the paste-coating mechanism 200.

[0064] S12. Drive the slurry roller to pick up the end slurry in the slurry tank, and drive the slurry tray to move above the slurry roller so that the end slurry on the slurry roller is placed in the strip groove.

[0065] Specifically, the dipping roller is driven to pick up the end paste in the paste tank and drive it to roll on the lower surface of the paste tray 210 to coat the lower surface of the paste tray 210 with a layer of end paste; then, the scraper is driven to scrape the end paste adhering to the lower surface of the paste tray 210 into the strip groove of the paste tray 210 to form a paste strip, and the excess end paste is scraped into the return paste tank; then, the thin plastic sheet in the material cage is picked up by the conveying device and placed on the dipping table.

[0066] S13. Drive the slurry tray with end slurry and the slurry plate to approach each other, and squeeze the end slurry in the strip groove onto the corresponding exposed part of the inner electrode, thus completing the sealing of the ground electrode of the plate three-terminal capacitive filter.

[0067] The driving lifting platform lowers the slurry tray 210 to contact the slurry plate 100, and squeezes the end slurry in the slurry tank to adhere to the ceramic body 21, so as to cover the exposed portion of the inner electrode 211 on the waist, the exposed portion of the inner electrode 211 on the upper surface, and the exposed portion of the inner electrode 211 on the lower surface of the ceramic body 21; then, the thin film of the ceramic body 21 with the end slurry adhered is placed into the drying device to dry the ceramic body 21 with the end slurry, and the dried end slurry forms a grounding electrode 23 in the area of ​​the exposed inner electrode 211 on the waist side of the ceramic body 21.

[0068] Then, the dried thin plastic sheet is placed into the needle bed machine, and the ceramic body 21 with the grounding electrode 23 on one side of the waist is pressed out, so that the inner electrode 211 on the other side of the waist of the ceramic body 21 is exposed. Then, the thin plastic sheet after pressing into the ceramic body 21 is placed under the leveling machine to level the height of the ceramic body 21, so that the inner electrode 211 on the other side of the waist of the ceramic body 21 is facing upward. The thin plastic sheet with the ceramic body 21 is placed into the material cage. Then, the material cage is placed in the fixed position of the paste-coating mechanism 200.

[0069] Then, the operations of steps S12 and S13 are repeated to form a ground electrode 23 on the exposed portion of the inner electrode 211 region on the other side of the waist of the ceramic body 21, thus completing the preparation of the ground electrodes 23 located on both sides of the waist of the ceramic body 21.

[0070] This application provides a sealing device 10 and a sealing method for a chip three-terminal capacitor filter. By designing a novel sealing device 10 for the chip three-terminal capacitor filter, the sealing device 10 is configured to mainly consist of a slurry-coating plate 100, a slurry-coating mechanism 200, and a driving mechanism. A strip-shaped groove 220 for receiving the sealing slurry is provided on the slurry tray 210, allowing the sealing slurry in the slurry tank to be transferred to the strip-shaped groove 220 via a slurry-coating roller. The sealing slurry is then squeezed out of the strip-shaped groove 220, thus sealing the strip-shaped groove. The end paste in 220 quickly adheres to the ceramic body 21 to form a corresponding grounding electrode 23, thereby achieving the purpose of sealing the exposed portion of the inner electrode 211 on the waist of the ceramic body 21. This results in a uniform and dense film layer on the grounding electrode 23, or a film layer that can completely cover the exposed portion of the inner electrode 211 on the waist. At the same time, it can improve the sealing efficiency of the chip three-terminal capacitor filter 20, thereby shortening the production cycle of the chip three-terminal capacitor filter 20 and reducing the production cost of the chip three-terminal capacitor filter 20.

[0071] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, such as the combination of technical features between embodiments, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An end termination for a chip multiterminal capacitive filter, characterized in that, The application relates to a sealing device for a chip type three-terminal capacitive filter. The sealing device comprises a slurry dipping plate, a slurry dipping mechanism and a driving mechanism. The slurry dipping plate has a through hole for carrying the chip type three-terminal capacitive filter and exposing the waist part of the ceramic body of the chip type three-terminal capacitive filter. The slurry dipping mechanism comprises a slurry dipping roller, a slurry receiving structure and a slurry tray. The slurry receiving structure has a slurry groove for receiving slurry. The slurry tray has a plurality of strip-shaped grooves arranged at intervals.

2. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The strip-shaped grooves are arranged on the side of the slurry tray close to the slurry dipping plate.

3. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The driving mechanism drives the slurry dipping roller to dip the slurry in the slurry groove and drives the slurry tray to move above the slurry dipping roller so that the slurry is arranged in the strip-shaped grooves.

4. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The driving mechanism drives the slurry tray provided with the slurry to move above the slurry dipping plate so that the slurry in the strip-shaped grooves is pressed on the exposed part of the internal electrode of the waist part.

5. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The sealing device for the chip type three-terminal capacitive filter further comprises a fixing member.

6. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The fixing member covers the opening on one side of the through hole.

7. The termination device for a chip multiterminal capacitive filter according to claim 1, characterized in that, The opening on the other side of the through hole is used for exposing the exposed part of the internal electrode of the waist part.

8. A method of end-capping a chip-type three-terminal capacitive filter, characterized by, The fixing member is a glue layer. The sealing device for the chip type three-terminal capacitive filter further comprises a scraper. The scraper is connected with the driving mechanism. The driving mechanism drives the scraper to scrape the slurry on the surface of the slurry tray into the strip-shaped grooves. One side of the scraper is provided with a plurality of recessed grooves arranged at intervals. The recessed grooves are arranged on the side of the scraper opposite to the strip-shaped grooves. The recessed grooves are arranged in one-to-one correspondence with the strip-shaped grooves. The slurry dipping plate comprises a metal plate and a silica gel layer arranged on the metal plate. The metal plate has a containing hole penetrating through the metal plate. The silica gel layer has a fixing hole penetrating through the silica gel layer. The diameter of the fixing hole is smaller than the diameter of the containing hole. The containing hole and the fixing hole are communicated to form the through hole. The slurry dipping plate is at least one of a metal plate and a polymer plate layer. The width of the strip-shaped grooves is greater than the width of the exposed part of the internal electrode of the waist part. The sealing device for the chip type three-terminal capacitive filter further comprises a slurry dipping table. The slurry dipping table is provided with a positioning member. The slurry dipping plate is further provided with a positioning hole penetrating through the slurry dipping plate. The positioning member is engaged with the positioning hole. The slurry tray comprises a metal layer and a rubber layer arranged on the metal layer. The rubber layer is arranged on the side of the metal layer close to the slurry dipping plate. The strip-shaped grooves are arranged on the rubber layer. The distance and the depth of every two adjacent strip-shaped grooves are equal. The sealing method comprises the following steps: The chip type three-terminal capacitive filter is arranged in the through hole of the slurry dipping plate to fix the chip type three-terminal capacitive filter and expose the exposed part of the internal electrode of the waist part of the chip type three-terminal capacitive filter. drive the slurry roller to dip the end slurry in the slurry tank, and drive the slurry disc to move above the slurry roller, so as to place the end slurry on the slurry roller into the strip-shaped groove; drive the slurry disc provided with the end slurry to be close to the slurry plate, and extrude the end slurry in the strip-shaped groove into the electrode on the corresponding exposed part of the waist, so as to complete the end sealing of the ground electrode of the sheet type three-terminal capacitor filter.

9. The method of terminating a chip-type three-terminal capacitive filter according to claim 8, characterized in that, The driving the slurry roller to dip the end slurry in the slurry tank, and driving the slurry disc to move above the slurry roller, so as to place the end slurry on the slurry roller into the strip-shaped groove, comprises: drive the slurry roller to dip the end slurry in the slurry tank, and drive the slurry disc to move above the slurry roller, so as to place the end slurry on the slurry roller into the strip-shaped groove; extrude the end slurry on the surface of the slurry disc into the strip-shaped groove through the scraper. drive the slurry roller to dip the end slurry in the slurry tank, and drive the slurry disc to move above the slurry roller, so as to place the end slurry on the slurry roller into the strip-shaped groove; extrude the end slurry on the surface of the slurry disc into the strip-shaped groove through the scraper.

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