Multilayer ceramic capacitor external electrode terminal implant plate

Abstract

The utility model relates to MLCC capacitor outer electrode terminal implantation board belongs to capacitor technical field. The utility model discloses epoxy board upper and lower symmetry arrangement is equipped with the hanger board and the glue movable board between the epoxy board, and the glue movable board is located the inside of hanger board and is connected through the elastic part, and the hanger board is detachably connected with the epoxy board, is equipped with a plurality of accommodation holes on the glue movable board, is equipped with the reserved hole corresponding with the accommodation hole on the epoxy board, and through pushing the glue movable board and moving in the hanger board, make each accommodation hole and the reserved hole corresponding between the common overlap of forming the hollow space constitute the clamping hole for clamping the capacitor product. The utility model breaks the traditional fixed size thick glue board hole and relies on the lateral wall extrusion to generate the clamping force, and the hanger board and the glue movable board can freely realize the aperture expansion or the reduction of the clamping hole through the elastic part, and the capacitor product is penetrated the clamping hole without contact, avoids the damage of the outer electrode being extruded by thick glue board.

Description

Technical Field

[0001] This utility model relates to an implantation plate for external electrode terminals of MLCC capacitors, belonging to the field of capacitor technology, and is particularly suitable for clamping and protecting the external electrodes of semi-finished capacitors during the manufacturing process. Background Technology

[0002] In the traditional MLCC industry, the external electrode connection (manufacturing) process for large-size capacitors involves fixing one end of the capacitor with a thick plastic plate, leaving the other end exposed at a certain height and immersed in the electrode paste. After the electrode paste adheres to the end and sidewalls, a moist external electrode is obtained by separating the two ends.

[0003] After the moistened external electrode is dried at 150°C, it is initially shaped but has low strength. If the capacitor end is reversed at this point to make another external electrode, the end that has just been dried and shaped will be clamped by the thick plastic plate, and the above action will be repeated to make the other end. Because of its low end strength, it will be squeezed and damaged by the holes in the thick plastic plate, resulting in a decrease in yield. For example, Chinese invention patent application number CN202510635507.2 discloses a chip capacitor end-sealing production line based on a thick plastic plate. The thick plastic plate described is a carrier that fixes the chip capacitor by silicone clamping. Therefore, in order to successfully implant the chip capacitor into the hole of the thick plastic plate, an guide plate needs to be placed on the top of the thick plastic plate. First, the chip capacitor is implanted into the guide hole of the guide plate by vibration. Then, the chip capacitor located in the guide plate is pressed into the hole of the thick plastic plate by a bed of needles, thereby completing the implantation process of the chip capacitor in the thick plastic plate.

[0004] During the process of embedding surface mount capacitors into thick plastic plates, especially when pressing one end of the freshly dried and shaped capacitor into the holes of the thick plastic plate, the capacitors are subjected to compressive force due to the current technology's design where the diameter of the holes in the thick plastic plate is slightly smaller than the length of the object to be held. This can lead to damage to the surface mount capacitors. Furthermore, the fixed hole diameter cannot accommodate capacitors of different sizes, resulting in poor flexibility.

[0005] Therefore, we have made improvements and proposed a new type of MLCC capacitor external terminal implantation plate. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model designs an implantation plate for the external electrode terminals of MLCC capacitors. Through an adjustable aperture design, it achieves non-contact clamping and avoids damage to the external electrodes of the capacitor.

[0007] The technical solution adopted in this utility model is an implantation plate for the external terminals of an MLCC capacitor, including epoxy resin plates arranged symmetrically on the upper and lower sides. A hanging plate and a movable plate are provided between the epoxy resin plates. The movable plate is located inside the hanging plate and is connected by an elastic element. The hanging plate and the epoxy resin plate are detachably connected. The movable plate is provided with a number of receiving holes. The epoxy resin plate is provided with reserved holes corresponding to the receiving holes. By pushing the movable plate to move inside the hanging plate, the hollow space formed by the overlap between each receiving hole and the corresponding reserved hole constitutes a clamping hole for clamping the capacitor. The diameter of the clamping hole is adapted to the outer diameter of the capacitor.

[0008] As a further embodiment of this utility model, a pair of inner sidewalls of the hanging plate are provided with a first hook, and a second hook that cooperates with the first hook is provided on the movable plate. The first hook and the second hook are spaced a certain distance apart and connected by an elastic element.

[0009] As a further embodiment of this invention, the epoxy resin plate is provided with an observation hole.

[0010] As a further embodiment of this utility model, one side of the hanging plate has a clearance notch, and the movable plate has a protrusion that matches the clearance notch. The side where the clearance notch is located is perpendicular to the side where the first hook is located.

[0011] As a further embodiment of this utility model, the inner wall of the receiving hole is perpendicular to the upper and lower surfaces of the adhesive plate; the inner wall of the reserved hole is perpendicular to the upper and lower surfaces of the epoxy resin plate.

[0012] As a further embodiment of this utility model, flexible silicone is adhered to the inner side of the receiving hole, and columnar protrusions are provided on the outer surface of the silicone.

[0013] As a further embodiment of this utility model, the hanging plate and the epoxy resin plate are connected by bolts.

[0014] As a further embodiment of this utility model, each side and corner of the epoxy resin board is exposed on the hanging plate.

[0015] As a further embodiment of this utility model, the epoxy resin board is placed inside the outer frame.

[0016] As a further embodiment of this utility model, the inner side of the outer frame is provided with a groove for accommodating the epoxy resin board, and the inner side of the groove is provided with a support plate for supporting the epoxy resin board.

[0017] This utility model discloses an implantation plate for the external terminals of MLCC capacitors. Its advantages, compared to existing technologies, are that it breaks away from the traditional method of using fixed-size thick plastic plates with holes that rely on sidewall compression to generate clamping force. The hanging plate and the movable plastic plate, through elastic elements, can freely expand or shrink the diameter of the clamping hole, allowing the capacitor to pass through the clamping hole without contact. This avoids damage to the weak or low-strength semi-finished external electrodes caused by the compression of the thick plastic plate, improving the yield rate. Simultaneously, by designing the thickness of the implantation plate, it ensures that only the middle area of ​​the capacitor is clamped, thus exposing sufficient margin for the two external terminals to be manufactured. This allows for the continuous fabrication of two external electrodes simply by flipping the plate, significantly reducing the manufacturing process and production cycle. The contact surface that generates clamping force with the capacitor is coated with silicone. The deformation of the flexible silicone accommodates the thickness tolerances and processing errors within the same area, achieving balanced and effective clamping force for each independent capacitor within the area. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the Chinese and foreign frame structure of this utility model; Figure 2 This is a schematic diagram of the epoxy resin board structure in this utility model; Figure 3 This is a schematic diagram of the hanging plate structure in this utility model; Figure 4 This is a schematic diagram of the rubber moving plate structure in this utility model; Figure 5 This is a schematic diagram of the structure of the hanging plate and the adhesive plate placed on the epoxy resin board in this utility model (without elastic elements). Figure 6 This is a schematic diagram of the structure of the hanging plate, the adhesive plate, and the epoxy resin plate placed on the outer frame in this utility model (without elastic elements). Figure 7 This is a schematic diagram of the present invention in a clamping state (without elastic elements); Figure 8 This is a schematic diagram of the present invention in an unclamped state; Figure 9 for Figure 8 Enlarged schematic diagram of a local section.

[0020] As shown in the figure: 1. Outer frame; 2. Epoxy resin board; 3. Hanging plate; 4. Adhesive plate; 5. Groove; 6. Bearing plate; 7. Accommodation hole; 8. Reserved hole; 9. First hook; 10. Second hook; 11. Relief notch; 12. Protruding tongue; 13. Through hole; 14. Observation hole; 15. Screw hole; 16. Clamping hole; 17. Silicone layer; 18. Elastic element. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] To further understand the utility model content of this utility model, the technical solution will be further described below in conjunction with specific embodiments.

[0023] Example 1: As Figures 1-9 As shown, this embodiment provides an implantation plate for the external terminals of an MLCC capacitor, including epoxy resin plates 2 symmetrically arranged vertically. A hanging plate 3 and a movable plate 4 are provided between the epoxy resin plates 2. The inner side of the hanging plate 3 is hollow. The movable plate 4 is located inside the hanging plate 3 and connected by an elastic element 18. The hanging plate 3 and the epoxy resin plates 2 are detachably connected. Specifically, both the hanging plate 3 and the epoxy resin plates 2 have screw holes 15 around their perimeters. The hanging plate 3 and the epoxy resin plates 2 are connected and fixed by bolts engaging with the screw holes 15. The movable plate 4 has a plurality of receiving holes 7 arranged in an array. The epoxy resin plates 2 have pre-drilled holes 8 corresponding one-to-one with the receiving holes 7. Each receiving hole 7 on the movable plate 4 has a precisely corresponding pre-drilled hole 8 on the epoxy resin plate 2. This correspondence ensures that when the holes are aligned, the capacitor can pass freely; when misaligned, clamping holes 16 are formed to hold the capacitor. Both the reserved hole 8 and the receiving hole 7 are through holes, with the reserved hole 8 being slightly larger than the size of the capacitor to be clamped. The epoxy resin board 2 has a flame retardant rating of FR4 to avoid scratches from contact with the ceramic surface, and also to ensure that it will not age during long-term use at 150°C.

[0024] In one specific embodiment of this invention, the inner walls of the hanging plate 3 are respectively provided with two first hooks 9, and the movable plate 4 is provided with four second hooks 10 that cooperate with the first hooks 9. The first hooks 9 and the second hooks 10 are spaced apart by a certain distance and connected by an elastic element 18. In this embodiment, the elastic element 18 is a tension spring, with its two ends hanging on the first hooks 9 and the second hooks 10 respectively. The distance between the first hooks 9 and the second hooks 10 is designed to provide space for the extension and contraction of the tension spring. The thickness of the hanging plate 3 is 1.5mm, and it is made of SUS304 material. The thickness of the movable plate 4 is slightly thinner than that of the hanging plate 3 to avoid contact friction. In this embodiment, the thickness is designed to be 1.45mm. The epoxy resin plate 2 is provided with an observation hole 14, through which the positional relationship and status of the first hooks 9, the second hooks 10 and the tension spring can be seen at any time.

[0025] In one specific embodiment of this invention, the hanging plate 3 has a clearance notch 11 on one side, and the movable plate 4 has a protrusion 12 that matches the clearance notch 11. The side where the clearance notch 11 is located is perpendicular to the side where the first hook 9 is located. To ensure that the capacitor to be clamped is in a 90° perpendicular position when in contact with the edge, the inner wall of the receiving hole 7 is perpendicular to the upper and lower surfaces of the movable plate 4; the inner wall of the reserved hole 8 is perpendicular to the upper and lower surfaces of the epoxy resin plate 2. The perpendicularity of the inner walls of the holes ensures the perpendicularity of the clamped capacitor. On this basis, a flexible silicone layer 17 with a thickness of 1mm is pasted on the inner side of the receiving hole 7. The outer surface of the silicone layer 17 has two spaced columnar protrusions with a radius of 0.2mm (not shown in the figure), which are designed to better accommodate thickness differences between capacitors when compression occurs. To ensure the adhesion is strong, the adhesive plate 4 has a through hole 13 adjacent to each receiving hole 7. A flexible silicone pillar is also provided in the through hole 13, and the flexible silicone pillar is bonded to the flexible silicone layer 17.

[0026] When it is necessary to clamp the capacitor, the movable plate 4 is pushed to misalign the receiving hole 7 and the reserved hole 8 to form a clamping hole 16 for clamping the capacitor. At this time, the elastic element 18 is stretched. Specifically, it extends into the relief notch 11 and contacts the tongue 12 while pushing the tongue 12 inward, so that the movable plate 4 moves horizontally away from the relief notch 11. When the movable plate 4 moves to contact the inner wall of the hanging plate 3, the receiving hole 7 and the reserved hole 8 are misaligned to form a clamping hole 16 for clamping the capacitor. At this time, the diameter of the clamping hole 16 reaches its maximum size. After the capacitor is placed into the clamping hole 16, the control of the movable plate 4 is released, so that the clamping hole 16 clamps the middle of the capacitor without contacting the outer electrode of the capacitor. At this time, the elastic element 18 is stretched, and both ends of the capacitor are exposed on the epoxy resin plate 2. When clamping the capacitor, one side of the capacitor contacts the flexible silicone layer 17 and columnar protrusion of the movable plate 4, while the other side contacts one side wall of the pre-drilled hole 8 on the upper and lower hanging plates 3. The contact surface between the receiving hole 7 and the capacitor, which forms the clamping force, is covered with silicone. The deformation of the flexible silicone layer accommodates the thickness tolerance and processing error of the capacitors within the same area, achieving a balanced and effective clamping force for each independent capacitor within the area. When the capacitor is released, the movable plate 4 moves towards the clearance notch 11, and the other side of the movable plate 4 separates from the hanging plate 3, at which point the elastic element 18 returns to its original position.

[0027] This invention controls the enlargement or reduction of the clamping hole 16 by pushing the adhesive plate 4. This differs fundamentally from traditional methods that use thick adhesive plates to fix the workpiece in a fixed-size circular hole, relying on the expansion of silicone in the capacitor to generate a shrinking clamping force. By adjusting the moving distance of the adhesive plate 4, the size of the clamping hole 16 is adjustable, accommodating capacitors of different sizes and enhancing the flexibility of the equipment. The free-opening and closing design of the clamping hole 16 avoids contact and compression between the traditional thick adhesive plate and the semi-finished product's outer electrode. This invention enlarges the clamping hole 16, inserts or moves the semi-finished product to a suitable position, and then closes it to form a fixed position, ensuring no contact with the semi-finished product's outer electrode throughout the process. This invention can clamp the middle part of the capacitor, thus leaving sufficient space for the two outer electrodes to be manufactured.

[0028] Example 2: Figures 1-9 As shown, based on Embodiment 1, each side and corner of the epoxy resin board 2 is exposed outside the hanging plate 3. Specifically, each side of the hanging plate 3 has a U-shaped groove, and each corner of the hanging plate 3 has a bend. The epoxy resin board 2 is rectangular in shape, so the overlapping part is exposed outside the hanging plate 3.

[0029] The epoxy resin board 2 is placed inside the outer frame 1. Specifically, the outer frame 1 has a groove 5 inside, and a support plate 6 for supporting the epoxy resin board 2 is provided inside the groove 5. In this embodiment, the support plate 6 has two shapes: triangular and semi-circular. The two epoxy resin boards 2 are symmetrical about the outer frame 1, that is, the two protrusions 12 face opposite directions. The protrusions 12 are close to the edge to facilitate the control of the movement of the adhesive plate 4.

[0030] Two outer frames 1 are fixed together by bolts, thus forming an outer shell. A pair of epoxy resin boards 2 form an intermediate layer, and a hanging plate 3 and a sliding plate 4 form a sandwich structure, which clamps and fixes the inner panels. The outer frames 1 are made of SUS304 material to ensure the overall structural strength and prevent deformation.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An MLCC capacitor with external terminals connected to an implantation plate, characterized in that, The device includes epoxy resin plates (2) arranged symmetrically on the top and bottom. A hanging plate (3) and a movable plate (4) are provided between the epoxy resin plates (2). The movable plate (4) is located inside the hanging plate (3) and is connected by an elastic element (18). The hanging plate (3) and the epoxy resin plate (2) are detachably connected. The movable plate (4) is provided with several receiving holes (7). The epoxy resin plate (2) is provided with reserved holes (8) that correspond one-to-one with the receiving holes (7). By pushing the movable plate (4) to move inside the hanging plate (3), the hollow space formed by the overlap between each receiving hole (7) and the corresponding reserved hole (8) constitutes a clamping hole (16) for clamping capacitors.

2. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, The inner sidewalls of the hanging plate (3) are provided with a first hook (9), and the movable plate (4) is provided with a second hook (10) that cooperates with the first hook (9). The first hook (9) and the second hook (10) are spaced a certain distance apart and connected by an elastic element (18).

3. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, An observation hole (14) is provided on the epoxy resin board (2).

4. The MLCC capacitor external terminal connection implantation plate according to claim 2, characterized in that, The hanging plate (3) has a clearance notch (11) on one side, and the movable plate (4) has a protrusion (12) that matches the clearance notch (11). The side where the clearance notch (11) is located is perpendicular to the side where the first hook (9) is located.

5. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, The inner wall of the receiving hole (7) is perpendicular to the upper and lower surfaces of the adhesive plate (4); the inner wall of the reserved hole (8) is perpendicular to the upper and lower surfaces of the epoxy resin plate (2).

6. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, A flexible silicone layer (17) is attached to the inside of the receiving hole (7), and columnar protrusions are provided on the outer surface of the silicone layer (17).

7. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, The mounting plate (3) is connected to the epoxy resin plate (2) by bolts.

8. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, The edges and corners of the epoxy resin board (2) are exposed on the hanging board (3).

9. The MLCC capacitor external terminal connection implantation plate according to claim 1, characterized in that, The epoxy resin board (2) is placed inside the outer frame (1).

10. The MLCC capacitor external terminal connection implantation plate according to claim 9, characterized in that, The inner side of the outer frame (1) is provided with a slot (5) for accommodating the epoxy resin board (2), and the inner side of the slot (5) is provided with a support plate (6) for supporting the epoxy resin board (2).

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