A glue filling mechanism for capacitor packaging

Abstract

The application relates to the technical field of electronic component preparation, and particularly relates to a glue filling mechanism for capacitor packaging, which comprises a workbench, a first conveying mechanism, a first glue filling mechanism, a second conveying mechanism, a second glue filling mechanism, a capacitor core placing mechanism, a core pushing mechanism and a rotary table, the output end of the rotary table is coaxially fixedly connected with a rotating disc, a plurality of placing grooves are arranged on the outer side of the rotating disc and are distributed in an array along the circumference of the rotating disc; limit assemblies are arranged on the two side walls of each placing groove; the limit assemblies are used for limiting the two sides of a plastic shell when the plastic shell passes through the first glue filling mechanism, the capacitor core placing mechanism and the core pushing mechanism, and the distance between the two sides of the plastic shell and the corresponding side walls of the placing grooves is kept consistent. The rotary table linkage multi-process mechanism is arranged to build a rotary assembly line, the processes of plastic shell feeding, bottom glue filling, core placing and pressing and secondary glue filling are integrated, automatic and continuous production is realized, and the yield of capacitor packaging finished products and the large-scale production efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of electronic component manufacturing technology, and more specifically to a potting mechanism for capacitor encapsulation. Background Technology

[0002] Capacitors are fundamental energy storage components in the field of power electronics. Epoxy resin potting is the core process of capacitor encapsulation. It mainly involves injecting insulating colloid into the insulating plastic shell to cover the capacitor core, thereby achieving electrical insulation, heat conduction and heat dissipation, moisture protection, and ensuring the stability and service life of the capacitor.

[0003] At present, the encapsulation and potting process of plastic-shell capacitors mostly adopts a split operation mode. Most of the mainstream potting operation mechanisms on the market use a fixed carrier plate to support the plastic shell of the capacitor. During the operation, the plastic shells containing the capacitors are pre-placed and fixed on the surface of the carrier plate. The placement and removal of the carrier plate are done manually. Subsequently, the carrier plate is moved as a whole by a horizontal transfer mechanism. The relative horizontal position of the carrier plate and the potting equipment is adjusted in turn to complete the potting operation for each plastic shell on the carrier plate one by one. This type of processing method has obvious technological shortcomings: First, the glue-filling process is completed independently, and the capacitor core placement and core clamping pretreatment processes need to be processed separately at the front station. The capacitor core needs to be pre-installed into the plastic shell in advance, making it difficult to integrate the entire process of material feeding, core assembly, and multi-stage glue filling. Second, the whole process relies on the fixed-point support of the carrier plate and horizontal displacement for alignment and glue filling. The work station flow is fragmented, the process connection is poor, the production cycle is fragmented, and it is difficult to build an automated and continuous production line. Third, the fixed carrier plate tank is usually customized and has limited compatibility with plastic shell specifications. When product changeover is complicated, the manual handling and loading / unloading workload is large, which restricts the efficiency of large-scale mass production of capacitors.

[0004] Therefore, the present invention proposes a potting mechanism for capacitor encapsulation to solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a potting mechanism for capacitor encapsulation, which integrates the entire process of plastic shell feeding, bottom layer potting, core placement and clamping, and secondary potting, thereby achieving automated and continuous production.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A potting mechanism for capacitor encapsulation includes a worktable, a first conveying mechanism, a first potting mechanism, a second conveying mechanism, a second potting mechanism, a capacitor core placement mechanism, a core pushing mechanism, and a rotary table. The first conveying mechanism, the first potting mechanism, the second conveying mechanism, the second potting mechanism, the capacitor core placement mechanism, the core pushing mechanism, and the rotary table are all mounted on the worktable. A rotating disk is coaxially fixedly connected to the output end of the rotary table. A plurality of placement slots are arranged in a circumferential array on the outer side of the rotating disk. Limiting components are provided on both sides of each placement slot. The limiting components are used to limit both sides of the plastic shell when the plastic shell passes through the first potting mechanism, the capacitor core placement mechanism, and the core pushing mechanism, and to keep the distance between the two sides of the plastic shell and the corresponding side walls of the placement slot consistent.

[0007] Furthermore, a protective cover for surrounding the rotating disk is fixedly connected to the surface of the rotary table, and an opening is provided at the top of the protective cover for providing a path for the plastic shell to enter and exit the placement slot.

[0008] Furthermore, each limiting component includes a movable groove on the side wall of the placement slot, and a limiting plate is slidably fitted inside the movable groove; each rotating disk has a telescopic cavity corresponding to one of the movable grooves, and a force-bearing rod is slidably fitted inside each telescopic cavity, with one end of each force-bearing rod extending to the outside of the rotating disk, and the force-bearing rod is slidably fitted with the rotating disk; each force-bearing rod has several guide grooves on its surface, and a strain component is slidably fitted in each guide groove with a wedge surface, with the side of the strain component away from the force-bearing rod being fixedly connected to the adjacent limiting plate; each movable groove is provided with a first spring, with both ends of the first spring being fixedly connected to the force-bearing rod and the inner wall of the movable groove, respectively, and the inner wall of the protective cover is located within the movement trajectory of the end of the force-bearing rod away from the movable groove; The strain gauge assembly is used to extend or retract the limiting plate as the force-bearing rod slides within the movable groove.

[0009] Furthermore, both sides of the opening of the protective cover have rounded corners.

[0010] Furthermore, each strain component includes a sliding cavity opened in the rotating disk. The two ends of each sliding cavity are respectively connected to the movable groove and the telescopic cavity. Each sliding cavity is slidably fitted with a telescopic block. The end of the telescopic block away from the force rod is fixedly connected to the side surface of the adjacent limiting plate. Each sliding cavity is provided with a second spring. The two ends of each second spring are fixedly connected to the telescopic block and the inner wall of the sliding cavity, respectively.

[0011] Furthermore, a third spring is provided between the telescopic block and the limiting plate; both ends of each third spring are fixedly connected to the telescopic block and the limiting plate, respectively.

[0012] Furthermore, each rotating disk is equipped with an auxiliary cavity that corresponds to a placement slot, and an alignment component for adjusting the distance between the plastic shell and the protective cover is slidably fitted inside the auxiliary cavity.

[0013] Furthermore, each alignment component includes a telescopic rod and a push plate. The push plate is set in the placement groove, and the telescopic rod is slidably fitted in the auxiliary cavity. One end of the telescopic rod extends into the placement groove and is fixedly connected to the push plate. Each auxiliary cavity is provided with a fourth spring, and both ends of each fourth spring are fixedly connected to the inner wall of the auxiliary cavity and the telescopic rod, respectively. Each auxiliary cavity is connected to two conveying channels, and each conveying channel is connected to the telescopic cavity adjacent to the conveying channel.

[0014] Furthermore, a buffer layer is provided on the side of the push plate away from the auxiliary cavity.

[0015] Furthermore, the end of the force-bearing rod furthest from the telescopic cavity is a dome structure.

[0016] The above approach has the following beneficial effects: 1. This solution adopts a rotary circulation layout with a rotary table and circumferential array placement slots. Multiple processes—including material feeding by the first conveyor mechanism, bottom A-grade glue injection by the first glue-filling mechanism, core placement by the capacitor core placement mechanism, core pressing and positioning by the core-pushing mechanism, and transfer by the second conveyor mechanism—are arranged sequentially along the circumference of the rotary table. A second glue-filling mechanism performs secondary glue filling on the second conveyor mechanism. This eliminates the traditional separate processing mode of horizontal movement of the carrier plate, integrating multiple processes to achieve continuous production. During operation, empty plastic shells are continuously conveyed by the first conveyor mechanism to the placement slots at the feeding points. The rotary table drives the rotating disk to rotate intermittently at a fixed angle, causing the placement slots carrying the plastic shells to flow sequentially to each processing station according to a fixed production rhythm. At the same time, different placement slots can simultaneously complete multiple different processes such as material feeding, glue filling, core placement, and pressing. No manual transfer or separate turnover tooling is required between processes, forming a continuous closed-loop automated production line. After the plastic shell is filled with the bottom layer of glue and fixed with the core, it is taken out by the second conveying mechanism and transferred to the second glue filling mechanism to complete the B glue encapsulation. The whole process relies on the rotary table to achieve automatic switching of workstations through intermittent indexing, eliminating the steps of frequent disassembly and reassembly and horizontal movement of the carrier plate in the traditional solution, reducing manual loading and unloading and product transfer operations, shortening the waiting time between processes, and effectively improving the overall production efficiency. 2. This invention utilizes a combination of limiting and alignment components to achieve adaptive flexible clamping and positioning in both the width and length dimensions of the plastic shell. It can adapt to various capacitor shells of different lengths and widths without requiring changes to the rotating disk or tooling, achieving multi-purpose functionality and improving equipment versatility. In the width direction, a force-bearing rod and wedge-shaped guide groove drive the telescopic block to extend and retract the limiting plate. Different outer diameter plastic shells correspond to different extension strokes of the limiting plate. When one side contacts the plastic shell first, a third spring provides elastic relief, and the limiting plates on both sides automatically center and correct themselves after synchronous clamping. In the length direction, a sealed pneumatic linkage structure is formed by the telescopic cavity, conveying channel, and auxiliary cavity. After the force-bearing rod is compressed, the medium inside the cavity pushes the telescopic rod, causing the push plate to abut against the end of the plastic shell. A fourth spring cooperates with the push plate buffer layer to automatically adjust the pushing distance of the push plate according to the length of the plastic shell. The compressible gas inside the sealed cavity automatically increases pressure as the plastic shell is squeezed in the opposite direction, continuously maintaining a stable clamping force and reducing the problem of the plastic shell shaking during the capacitor core placement and pushing processes, which can cause the capacitor core installation position to shift. This device eliminates the need for machine downtime to change tooling. Switching between product models only requires adjusting the rotary table rotation cycle parameters, which shortens downtime for product changeovers, reduces the number of tooling components required for producing multiple capacitor models, and lowers the costs of equipment procurement, tooling storage, replacement, and maintenance. One set of equipment can meet the processing needs of multiple specifications of plastic shell encapsulation.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the encapsulation mechanism for capacitors according to the present invention; Figure 2 This is a schematic diagram of the rotary table of an embodiment of the encapsulation mechanism for capacitors of the present invention; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 This is a cross-sectional view of the limiting component in an embodiment of the potting mechanism for capacitor encapsulation of the present invention; Figure 5 for Figure 4 Enlarged view of section B.

[0019] The reference numerals in the accompanying drawings include: 1. First conveying mechanism; 2. Rotary table; 201. Protective cover; 202. Opening; 203. Rotating disk; 204. Placement slot; 205. Limiting plate; 206. Force rod; 207. Telescopic cavity; 208. First spring; 3. Second conveying mechanism; 4. Second glue-dispensing mechanism; 5. Core pushing mechanism; 6. Capacitor core placement mechanism; 7. First glue-dispensing mechanism; 8. Guide groove; 9. Telescopic block; 901. Sliding cavity; 902. Second spring; 903. Third spring; 10. Auxiliary cavity; 11. Telescopic rod; 12. Fourth spring; 13. Conveying channel. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The following detailed description illustrates the specific implementation method: Example 1:

[0024] like Figure 1 , Figure 2 and Figure 3As shown, a capacitor encapsulation potting mechanism includes a worktable, a first conveying mechanism 1, a first potting mechanism 7, a second conveying mechanism 3, a second potting mechanism 4, a capacitor core placement mechanism 6, a core pushing mechanism 5, and a rotary table 2. The first conveying mechanism 1, the first potting mechanism 7, the second conveying mechanism 3, the second potting mechanism 4, the capacitor core placement mechanism 6, the core pushing mechanism 5, and the rotary table 2 are all mounted on the worktable.

[0025] The output end of the rotary table 2 is coaxially screwed with a rotating disk 203. The rotary table 2 drives the rotating disk to rotate intermittently, achieving precise switching of the plastic shell station and meeting the cycle time of the step-by-step feeding, dispensing, and unloading processes of the production line. The rotary table 2 can be equipped with two preferred drive structures as follows: 1. The rotary table 2 has a built-in servo motor, which directly drives the rotating disk 203 to rotate intermittently. The rotation angle, start-stop interval, and rotation speed can be flexibly adjusted, and the station positioning accuracy is high; 2. The rotary table 2 is equipped with a Geneva mechanism in conjunction with a conventional three-phase motor to achieve the intermittent movement of the rotating disk 203. The Geneva mechanism is a unidirectional intermittent motion mechanism composed of a Geneva wheel and a cylindrical pin, also known as a Malta mechanism. This solution has a lower structural cost.

[0026] The outer side of the rotating disk 203 has several placement slots 204 arranged in a circumferential array along the outer side of the rotating disk 203. The size of the placement slots 204 is consistent with the size of the plastic shell to match the corresponding specifications of the plastic shell, thereby avoiding the damage caused by excessive displacement of the plastic shell during rotation (e.g., glue dripping onto the edge of the plastic shell and the rotating table; displacement of the plastic shell when placing the capacitor core, making it difficult to insert). The rotating table 2 has screws on its surface to provide a protective cover 201 for surrounding the rotating disk 203. The top of the protective cover 201 is provided with an opening 202 for providing a path for the plastic shell to enter and exit the placement slots 204. The top of the protective cover 201 is located above the top of the rotating disk 203. In this design, the two placement slots 204 at the opening 202 are selected as the loading and unloading points. At the same time, the included angle between the two placement slots 204 is preferably 90°, so that the first conveying mechanism 1 and the second conveying mechanism 3 can be arranged with a shorter path in actual production, thereby reducing a certain cost. The first conveying mechanism 1 delivers the plastic shell to the loading point, and the second conveying mechanism 3 removes the plastic shell from the unloading point. As the plastic shell rotates from the loading point to the unloading point, it sequentially passes through the first potting mechanism 7, the capacitor core placement mechanism 6, and the core pushing mechanism 5, completing the potting of the bottom layer adhesive (e.g., A-component adhesive, the main component of the two-component epoxy potting compound for capacitor encapsulation, used in conjunction with B-component curing agent, mainly serving as an insulating base and supporting agent for the core), the placement of the capacitor core, and its initial fixation. Then, the plastic shell with the fixed capacitor core is transported by the second conveying mechanism 3 to a position directly below the second potting mechanism, where the second potting mechanism pours subsequent adhesive (e.g., B-component fixing agent) into the plastic shell.

[0027] The specific implementation process is as follows: When the device is started, the first conveying mechanism 1 conveys the empty plastic shells to be processed to the empty placement slots 202 at the loading point. Then, the rotary table 2 drives the rotating disk 203 to rotate intermittently according to the preset production rhythm, which drives the plastic shells in each placement slot 204 to flow sequentially to the workstations corresponding to the first glue dispensing mechanism 1, the capacitor core placement mechanism 6 and the core pushing mechanism 5, and to perform the corresponding glue dispensing (A glue dispensing), capacitor core placement and capacitor core pressing processes.

[0028] Example 2:

[0029] The difference from Embodiment 1 is that in Embodiment 1, the width and dimensions of the placement slot 204 are fixed values, mainly used for limiting and supporting capacitor shells with a single outer diameter specification. In actual capacitor mass production, the outer diameter of the encapsulation shells for different capacitor models varies. If different models need to be processed, the entire rotating disk 203 needs to be disassembled and replaced, which is cumbersome, has poor processing adaptability, and low equipment versatility. Therefore, in this solution, specifically, limit components are provided on both sides of each placement slot 204. Specifically, as shown in the example... Figure 4 and Figure 5As shown, each limiting component includes a movable groove on the side wall of the placement slot 204, and a limiting plate 205 is slidably fitted inside each movable groove; each rotating disk 203 has a telescopic cavity 207 corresponding to one of the movable grooves, and a force-bearing rod 206 is slidably fitted inside each telescopic cavity 207, with one end of each force-bearing rod 206 extending to the outside of the rotating disk 203, and the force-bearing rod 206 is slidably fitted with the rotating disk 203; each force-bearing rod 206 has several guide grooves 8 on its surface, and each movable groove has a guide groove 8 on its surface. A first spring 208 is provided, with its two ends welded to the force-bearing rod 206 and the inner wall of the movable groove, respectively. The inner wall of the protective cover 201 is located within the movement trajectory of the end of the force-bearing rod 206 away from the movable groove. That is, when the rotating disk 203 rotates to switch work positions, the outer end of the force-bearing rod 206 abuts against the inner wall of the protective cover 201. The force-bearing rod 206 is constrained by the protective cover 201 and slides inward along the telescopic cavity 207 where the force-bearing rod 206 is located, compressing the first spring 208. At the same time, the end of the force-bearing rod 206 away from the telescopic cavity 207 has a dome structure, and both sides of the opening 202 of the protective cover 201 have rounded corner structures, so that the protective cover 201 smoothly presses the force-bearing rod 206 and avoids jamming. Furthermore, each guide groove 8 is slidably fitted with a strain gauge assembly. Specifically, each strain gauge assembly includes a sliding cavity 901 opening within the rotating disk 203. Each sliding cavity 901 has its two ends connected to the movable groove and the telescopic cavity 207, respectively. A telescopic block 9 is slidably fitted within each sliding cavity 901, with the end of the telescopic block 9 furthest from the force-bearing rod 206 bonded to the side surface of the adjacent limiting plate 205. A second spring 902 is provided within each sliding cavity 901, with both ends of each second spring 902 bonded to the telescopic block 9 and the inner wall of the sliding cavity 901, respectively. Additionally, a third spring 903 is provided between the telescopic block 9 and the limiting plate 205; both ends of each third spring 903 are bonded to the telescopic block 9 and the limiting plate 205, respectively.

[0030] In addition, the top of the first conveying mechanism 1 and the second conveying mechanism 3 are symmetrically equipped with limiting baffles that can slide laterally left and right. The limiting baffles are used to adjust the width of the conveying path. The distance between two adjacent limiting baffles is adjusted by a screw structure. The operator can slide the baffles on both sides to adjust the width of the conveying channel according to the actual outer diameter of the plastic shell to be processed, match the conveying size of different specifications of plastic shells, complete the rapid calibration of the conveying path, further improve the adaptability of the whole machine to plastic shells with different outer diameters, and simplify the model switching process.

[0031] The specific implementation process is as follows: When the first conveying mechanism 1 conveys the capacitor plastic shell to the loading point and it falls into the placement tank 204, the rotary table drives the rotating disk 203 to rotate intermittently, driving the placement tank 204 containing the plastic shell to flow to the first glue dispensing station.

[0032] The dome structure at the outer end of the corresponding force-bearing rod 206 first contacts the rounded corner at the opening 202 of the protective cover 201, and smoothly slides into the inner section of the protective cover 201 by relying on the arc transition. As the rotating disk 203 continues to rotate, the inner wall of the protective cover 201 presses the force-bearing rod 206 inward, and the force-bearing rod 206 slides inward along the telescopic cavity 207 to compress the first spring 208 to store energy. When the force-bearing rod 206 moves inward, the wedge surface of the guide groove 8 on the surface of the force-bearing rod 206 pushes the telescopic block 9 to slide towards the center of the placement groove against the elastic force of the second spring 902, causing the corresponding limiting plate 205 to extend synchronously. When both force-bearing rods 206 corresponding to the same placement groove 204 are squeezed, the two corresponding limiting plates clamp the plastic shell towards each other. Meanwhile, due to the elastic effect of the third spring 903, after the telescopic block 9 is pushed to a fixed stroke, the limit plates 205 on both sides still have a telescopic stroke range. The distance between the two limit plates 205 can be automatically adjusted according to the actual outer diameter of the plastic shell. The limit plates 205 on both sides of the small-sized plastic shell exert less pressure on the third spring 903, while the limit plates 205 on both sides of the large-sized plastic shell exert more pressure on the third spring 903. Therefore, it can be compatible with various specifications of plastic shells without replacing the rotating plate 203 (or purchasing additional equipment), improving the versatility of the equipment and reducing downtime for model changeover.

[0033] Example 3:

[0034] The difference from Example 2 is that Example 2 mainly achieves adaptive clamping and centering positioning in the width direction of the plastic shell, compensates for radial outer diameter deviation of the plastic shell, and optimizes lateral alignment accuracy; however, the length and width dimensions of the capacitor plastic shell have specification differences, making it difficult to achieve adaptive adjustment and position calibration in the length direction of the plastic shell. Furthermore, this solution specifically addresses this issue. Figure 4 As shown, each rotating disk 203 is provided with an auxiliary cavity 10 corresponding to a placement slot 204. An alignment component for adjusting the distance between the plastic shell and the protective cover 201 is slidably fitted within the auxiliary cavity 10, cooperating with the lateral limiting mechanism described in Embodiment 1 to further improve the alignment accuracy between the glue-filling point and the core-pushing point. Specifically, each alignment component includes a telescopic rod 11 and a push plate. The push plate is disposed within the placement slot 204, and the telescopic rod 11 is slidably fitted within the auxiliary cavity 10. One end of each telescopic rod 11 extends into the placement slot 204 and is connected to the push plate with a screw. Each auxiliary cavity 10 is provided with a fourth spring 12, and both ends of each fourth spring 12 are respectively bonded to the inner wall of the auxiliary cavity 10 and the telescopic rod 11. Each auxiliary cavity 10 is connected to two conveying channels 13, which are connected to a telescopic cavity 207 adjacent to the conveying channel 13. A buffer layer is provided on the side of the push plate away from the auxiliary cavity 10.

[0035] The specific implementation process is as follows: When the rotating disk 203 drives the plastic shell of the placement groove 204 into the working position, and the force rod 206 slides inward under the pressure of the protective cover 201, the telescopic block 9 moves towards the center of the placement groove 204 with the wedge surface transmission, so that the volume of the sealed chamber 207 connected to the conveying channel 13 is reduced. After the sealed medium in the chamber is pressurized, it flows into the corresponding auxiliary chamber 10 through the conveying channels 13 on both sides. After the pressure in the auxiliary chamber 10 increases, it pushes the telescopic rod 11 to overcome the elastic force of the fourth spring 12 and slide towards the placement groove 204, thereby driving the push plate to be smoothly pushed out from the radial inner side of the placement groove 204 towards the groove opening. It pushes the plastic shell from the back and moves radially outward, so that the outer side of the plastic shell abuts against the inner wall of the protective cover 201, thereby achieving a unified reference position and completing the radial position calibration. Meanwhile, relying on the buffer layer set on the surface of the push plate, which has flexible deformation capability, and combined with the elastic compensation characteristics of the fourth spring 12, the plastic shell length direction adaptive adjustment is realized: for long plastic shells with a large length dimension, the end of the plastic shell presses against the buffer layer in advance and squeezes the push plate, and applies reverse pressure to compress the fourth spring 12, shortening the extension stroke of the telescopic rod 11, and adapting to the long plastic shell limit; for short plastic shells with a small length dimension, the fourth spring 12 releases energy to push the telescopic rod 11 to increase the extension stroke, driving the push plate to fit tightly against the end of the short plastic shell, reducing the plastic shell's displacement along the length direction; combined with the width direction adaptive centering completed by the limit components on both sides of embodiment 2, the plastic shell width and length bidirectional full-dimensional adaptive positioning is realized, adapting to the synchronous processing of capacitor plastic shells of different length and width specifications.

[0036] Simultaneously, after the push plate presses against the plastic shell to complete bidirectional positioning, the plastic shell will exert a reverse supporting force on the push plate. Due to mechanical constraints, the force-bearing rods 206 on both sides are locked by the inner wall of the protective cover 201 and cannot continue to slide inward. The position of the telescopic block 9 is simultaneously fixed, and the overall basic volume of the sealed chamber remains constant. Since the auxiliary chamber 10, the conveying channel 13, and the telescopic chamber 207 are filled with compressible gas, which has elastic compression characteristics, if the subsequent core pushing and bottom layer glue pouring operations generate vibration and axial extrusion force, causing the plastic shell to press against the push plate in the reverse direction, the telescopic rod 11 can slightly retract and slide back with the reverse thrust of the plastic shell. The gas inside the auxiliary cavity 10 is further compressed, reducing the volume of the gas cavity and increasing the overall gas pressure inside the pipeline. After the gas pressure increases, it acts in the opposite direction on the end face of the telescopic rod 11, forming a gas pressure damping back pressure, automatically compensating for the clamping force, and strengthening the pressing and limiting force of the push plate on the plastic shell. By utilizing the characteristics of gas compressibility and pressure adaptive feedback, the disturbance load caused by station vibration and core pushing is reduced, the slight shaking of the plastic shell is damped and weakened, and the problems of plastic shell force deviation and vibration are reduced. This reduces the processing defects such as core misalignment, skewing, and uneven bonding gap caused by plastic shell shaking during the placement and pressing process of the capacitor core, and ensures the overall packaging accuracy of the capacitor.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A capacitor encapsulation potting mechanism, comprising a worktable, a first conveying mechanism (1), a first potting mechanism (7), a second conveying mechanism (3), a second potting mechanism (4), a capacitor core placement mechanism (6), a core pushing mechanism (5), and a rotary table (2), wherein the first conveying mechanism (1), the first potting mechanism (7), the second conveying mechanism (3), the second potting mechanism (4), the capacitor core placement mechanism (6), the core pushing mechanism (5), and the rotary table (2) are all mounted on the worktable, characterized in that, The output end of the rotary table (2) is coaxially fixedly connected to a rotating disk (203). Several placement slots (204) are arranged in a circumferential array along the outer side of the rotating disk (203). Each placement slot (204) has a limit component on both sides. The limit component is used to limit both sides of the plastic shell when the plastic shell passes through the first potting mechanism (7), the capacitor core placement mechanism (6) and the core pushing mechanism (5), and to keep the distance between the two sides of the plastic shell and the corresponding side wall of the placement slot (204) consistent.

2. The potting mechanism for capacitor encapsulation according to claim 1, characterized in that, The rotary table (2) has a protective cover (201) fixedly connected to its surface to surround the rotating disk (203). The top of the protective cover (201) has an opening (202) for providing a path for the plastic shell to enter and exit the placement slot (204).

3. The potting mechanism for capacitor encapsulation according to claim 2, characterized in that, Each limiting component includes a movable groove on the side wall of the placement slot (204), and a limiting plate (205) slides within each movable groove; each rotating disk (203) has a telescopic cavity (207) corresponding to the movable groove, and a force-bearing rod (206) slides within each telescopic cavity (207). One end of each force-bearing rod (206) extends to the outside of the rotating disk (203), and each force-bearing rod (206) slides within the rotating disk (203); the force-bearing rod (206) The surface of each guide groove (8) is provided with several guide grooves (8), and each guide groove (8) is fitted with a strain component in a wedge-shaped sliding fit. The strain component is fixedly connected to the adjacent limiting plate (205) on the side away from the force rod (206). Each movable groove is provided with a first spring (208), and the two ends of the first spring (208) are fixedly connected to the force rod (206) and the inner wall of the movable groove, respectively. The inner wall of the protective cover (201) is located within the movement trajectory of the end of the force rod (206) away from the movable groove. The strain gauge is used to slide the force rod (206) in the movable groove to form a corresponding extension and retraction action on the limiting plate (205).

4. The potting mechanism for capacitor encapsulation according to claim 3, characterized in that, The protective cover (201) has rounded corners on both sides of the opening (202).

5. The potting mechanism for capacitor encapsulation according to claim 4, characterized in that, Each strain gauge assembly includes a sliding cavity (901) opened in the rotating disk (203). Each sliding cavity (901) is connected to the movable groove and the telescopic cavity (207) at both ends. Each sliding cavity (901) is slidably fitted with a telescopic block (9). The end of the telescopic block (9) away from the force rod (206) is fixedly connected to the side surface of the adjacent limiting plate (205). Each sliding cavity (901) is provided with a second spring (902). Each second spring (902) is fixedly connected to the telescopic block (9) and the inner wall of the sliding cavity (901) at both ends.

6. The potting mechanism for capacitor encapsulation according to claim 5, characterized in that, A third spring (903) is provided between the telescopic block (9) and the limiting plate (205); the two ends of each third spring (903) are fixedly connected to the telescopic block (9) and the limiting plate (205) respectively.

7. The potting mechanism for capacitor encapsulation according to claim 6, characterized in that, Each rotating disk (203) is provided with an auxiliary cavity (10) corresponding to the placement slot (204). An alignment component for adjusting the distance between the plastic shell and the protective cover (201) is slidably fitted in the auxiliary cavity (10).

8. The potting mechanism for capacitor encapsulation according to claim 7, characterized in that, The alignment components all include telescopic rods (11) and push plates. The push plates are all set in the placement groove (204). The telescopic rods (11) are all slidably fitted in the auxiliary cavity (10). One end of the telescopic rods (11) extends into the placement groove (204) and is fixedly connected to the push plate. A fourth spring (12) is provided in the auxiliary cavity (10). Both ends of each fourth spring (12) are fixedly connected to the inner wall of the auxiliary cavity (10) and the telescopic rod (11) respectively. Two conveying channels (13) are connected in the auxiliary cavity (10). The conveying channels (13) are all connected to the telescopic cavity (207) adjacent to the conveying channel (13).

9. The potting mechanism for capacitor encapsulation according to claim 8, characterized in that, A buffer layer is provided on the side of the push plate away from the auxiliary cavity (10).

10. The potting mechanism for capacitor encapsulation according to claim 9, characterized in that, The end of the force-bearing rod (206) away from the telescopic cavity (207) is a dome structure.

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