Capacitor assembly guide mechanism
Patent Information
- Application Number
- CN202522210930.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-20
AI Technical Summary
[0004]本实用新型的目的在于提供一种电容器组装导向机构，通过设置工作台、导向台、导向槽、封盖通道、芯体通道、导向筒、封盖送料台和芯体送料台，解决了电容器组装效率低的问题，以及导向过程中电容器封盖和电容器芯体可能会受损的问题
本实用新型通过设置工作台、导向台、封盖送料台和芯体送料台，解决了电容器组装效率低的问题；将电容器外壳放置于外壳送料槽内，电容器封盖放置于封盖送料槽内，电容器芯体放置于芯体送料槽内，外壳推板推动电容器外壳在外壳送料槽内移动，封盖推板推动电容器封盖在封盖送料槽内移动，并通过封盖通道进入导向槽，芯体推板推动电容器芯体在芯体送料槽内移动，并通过芯体通道进入导向槽，当电容器外壳运动至导向槽下方时，电容器芯体先落入电容器外壳内，电容器封盖再落入电容器外壳内，冲压件对电容器封盖进行冲压固定，即可完成电容器的组装，达到高效率的进行电容器的组装的目的。
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Figure CN224803767U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of capacitor processing technology, and in particular relates to a capacitor assembly guiding mechanism. Background Technology
[0002] With the rapid development of electronic information technology, digital electronic products are being updated at an increasingly fast pace. The production and sales of consumer electronics, primarily flat-screen TVs, laptops, and digital cameras, continue to grow. As a crucial component of these electronic products, capacitors play multiple important roles in circuits, including storing charge, filtering, coupling, and decoupling. In the capacitor manufacturing process, the capacitor casing, capacitor cover, and capacitor core are generally processed separately and then assembled. During capacitor assembly, the capacitor casing, capacitor cover, and capacitor core need to be guided to ensure smooth assembly. However, the following problems still exist in the current capacitor assembly process: The capacitor assembly process is as follows: first, the capacitor casing is placed on the workbench, then the capacitor core is placed inside the capacitor casing, and the capacitor cap is placed on top of the core and then stamped to fix it. The assembly process has a low degree of automation and slow production efficiency. When using automated equipment to guide capacitor cores and capacitor caps, the capacitor cores and capacitor caps, due to their certain height, may tip over during the guiding process, leading to wear and tear, which in turn affects the quality and stability of the produced capacitors.
[0003] To address these issues, we provide a capacitor assembly guide mechanism. Utility Model Content
[0004] The purpose of this utility model is to provide a capacitor assembly guiding mechanism. By setting up a worktable, a guide table, a guide groove, a capping channel, a core channel, a guide cylinder, a capping feeding table, and a core feeding table, it solves the problem of low capacitor assembly efficiency and the problem of potential damage to the capacitor cap and capacitor core during the guiding process.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a capacitor assembly guiding mechanism, comprising a worktable, a guide platform, a cap feeding platform, and a core feeding platform. The worktable has a guide platform at its top, and a cap feeding platform and a core feeding platform are fixedly connected to its two sides respectively. The top height of the core feeding platform is lower than that of the cap feeding platform. The worktable has a shell feeding groove at its top, and the cap feeding platform above the shell feeding groove has a cap feeding groove at its top. The core feeding platform above the shell feeding groove also has a core feeding groove at its top. A guide groove is formed inside the guide platform, directly above the shell feeding groove. A capping channel connected to the cap feeding groove is formed inside the guide platform at the upper periphery of the guide groove, and a core channel connected to the core feeding groove is formed inside the guide platform at the lower periphery of the guide groove. A stamped part is provided inside the guide groove. When assembling a capacitor, the capacitor casing is placed in the casing feeding groove and moves down the guide groove. The capacitor cover is placed in the cover feeding groove and moves down the guide groove through the cover feeding groove and cover channel. The capacitor core is placed in the core feeding groove and moves down the guide groove through the core feeding groove and core channel. When the capacitor casing moves down to the bottom of the guide groove, because the top of the core feeding platform is lower than the top of the cover feeding platform, the capacitor core falls into the capacitor casing first. The capacitor cover covers the capacitor core, and the stamping part presses down to stamp and fix the capacitor cover, thus completing the capacitor assembly. A guide cylinder is fixedly connected to the bottom of the guide platform located at the bottom of the guide groove, and the inner diameter of the guide cylinder is the same as the inner diameter of the guide groove. When the capacitor cap and capacitor core fall from the guide groove, they first pass through the guide cylinder and then fall into the capacitor shell. The guide cylinder guides the capacitor core and capacitor cap without affecting the feeding of the capacitor shell.
[0006] Furthermore, an arc-shaped outer shell push plate is provided inside the outer shell feeding groove, and a cylinder is fixedly connected to one side of the workbench. The piston rod of the telescopic end of the cylinder is fixedly connected to the outer arc surface of the outer shell push plate. A large number of capacitor casings are placed in the casing feeding groove. Cylinder 1 is activated. The piston rod on cylinder 1 is stretched, which drives the casing pusher plate to push the capacitor casings. Due to the existence of the casing feeding groove, the capacitor casings will only move downwards towards the guide groove. The capacitor casings behind the capacitor casings in the movement path will squeeze and push the capacitor casings in front of the movement path. When the capacitor casings move to the bottom of the guide groove, the capacitors can be assembled.
[0007] Furthermore, the cross-sectional dimensions of the capping feeding trough are the same as those of the capping channel. An arc-shaped capping push plate is provided inside the capping feeding trough. A cylinder two is fixedly connected to the side of the capping feeding platform away from the core feeding platform. The piston rod of the telescopic end of the cylinder two is fixedly connected to the outer arc surface of the capping push plate. A large number of capacitor caps are placed in the cap feeding trough. Cylinder 2 is activated, and the piston rod on cylinder 2 stretches, driving the cap pusher plate to push the capacitor caps. Due to the presence of the cap feeding trough, the capacitor caps will only move towards the cap channel and guide groove. The capacitor caps behind the capacitor caps' movement path will squeeze and push the capacitor caps in front of the movement path. The capacitor caps can fall into the capacitor shell through the cap channel, guide groove and guide cylinder. During the process of the capacitor caps moving from the cap channel to the guide groove, the cap channel limits the capacitor caps to prevent them from tipping over.
[0008] Furthermore, the cross-sectional dimensions of the core feeding groove are the same as those of the core channel. An arc-shaped core push plate is provided inside the core feeding groove. A cylinder three is fixedly connected to the side of the core feeding platform away from the cap feeding platform. The piston rod of the telescopic end of the cylinder three is fixedly connected to the outer arc surface of the core push plate. A large number of capacitor cores are placed in the core feeding groove. The cylinder three is activated, and the piston rod on the cylinder three is stretched, which drives the core pusher plate to push the capacitor cores. Due to the existence of the core feeding groove, the capacitor cores will only move towards the core channel and guide groove. The capacitor cores behind the capacitor cores in the movement path will squeeze and push the capacitor cores in front of the movement path. The capacitor cores can fall into the capacitor shell through the core channel, guide groove and guide cylinder. During the process of the capacitor cores moving from the core channel to the guide groove, the core channel limits the capacitor cores to prevent the capacitor cores from tipping over.
[0009] Furthermore, a stamping cylinder is fixedly connected to the top of the guide platform, and the piston rod of the telescopic end of the stamping cylinder is fixedly connected to the end of the stamping part adjacent to it. The diameter of the stamping part is consistent with the inner diameter of the guide groove. After the capacitor core and capacitor cover are successively placed into the capacitor casing, the stamping cylinder is activated. The piston rod on the stamping cylinder is stretched, which drives the stamping parts to press down, and the capacitor cover is stamped and fixed, thus completing the assembly of the capacitor.
[0010] Furthermore, the bottom ends of the guide platform, the capping feeding platform, and the core feeding platform are all fixedly connected to the support legs that are fixedly connected to the worktable; the support legs provide support for the guide platform, the capping feeding platform, and the core feeding platform.
[0011] Furthermore, a capacitor shell is provided inside the outer shell feeding groove, and the capacitor shell fits into the outer shell feeding groove. A capacitor cap is provided inside the cap feeding groove, and the capacitor cap fits into the cap feeding groove. A capacitor core is provided inside the core feeding groove, and the capacitor core fits into the core guide groove. The bottom end of the guide cylinder is higher than the top end of the capacitor shell; the guide cylinder will not rub against the capacitor shell.
[0012] This utility model has the following beneficial effects: This invention solves the problem of low capacitor assembly efficiency by setting up a worktable, a guide table, a cap feeding table, and a core feeding table. The capacitor casing is placed in the casing feeding groove, the capacitor cap in the cap feeding groove, and the capacitor core in the core feeding groove. A casing pusher plate moves the capacitor casing within the casing feeding groove, a cap pusher plate moves the capacitor cap within the cap feeding groove, and the cap cap enters the guide groove through the cap channel. A core pusher plate moves the capacitor core within the core feeding groove, and the core enters the guide groove through the core channel. When the capacitor casing moves to the bottom of the guide groove, the capacitor core falls into the capacitor casing first, followed by the capacitor cap. A stamping part then presses and fixes the capacitor cap, thus completing the capacitor assembly and achieving high-efficiency capacitor assembly.
[0013] This invention solves the problem of potential damage to the capacitor cap and capacitor core during the guiding process by setting up a guide groove, a capping channel, a core channel, and a guide cylinder. As the capacitor cap moves from the capping channel to the guide groove, the capping channel limits the capacitor cap to prevent it from tipping over. Similarly, as the capacitor core moves from the core channel to the guide groove, the core channel limits the capacitor core to prevent it from tipping over. Finally, as the capacitor cap and capacitor core move from the guide groove into the capacitor casing, the guide cylinder guides them to prevent friction with the capacitor casing, thus improving the stability of capacitor production and assembly.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of a capacitor assembly guide mechanism.
[0017] Figure 2 This is a cross-sectional view of the workbench.
[0018] Figure 3 This is a schematic diagram of the connection structure of the guide platform, the capping feeding platform, and the core feeding platform.
[0019] Figure 4 for Figure 2 A cross-sectional view.
[0020] Figure 5 A schematic diagram showing the state of the capacitor assembly guide mechanism during guidance.
[0021] The attached diagram lists the components represented by each number as follows: 1. Workbench; 101. Outer shell feeding chute; 102. Outer shell push plate; 103. Cylinder 1; 2. Guide table; 201. Guide groove; 202. Capping channel; 203. Core channel; 204. Guide cylinder; 205. Stamping part; 206. Stamping cylinder; 3. Capping feeding table; 301. Capping feeding chute; 302. Capping push plate; 303. Cylinder 2; 4. Core feeding table; 401. Core feeding chute; 402. Core push plate; 403. Cylinder 3; 5. Support leg; 6. Capacitor outer shell; 7. Capacitor core; 8. Capacitor cap. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1
[0023] Please see Figure 1-4This utility model is a capacitor assembly guiding mechanism, including a workbench 1, a guide platform 2, a cap feeding platform 3, and a core feeding platform 4. The guide platform 2 is located at the top of the workbench 1, and the cap feeding platform 3 and the core feeding platform 4 are fixedly connected to both sides of the guide platform 2, respectively. The top height of the core feeding platform 4 is lower than the top height of the cap feeding platform 3. A housing feeding groove 101 is provided at the top of the workbench 1, and a cap feeding groove 101 is located above the housing feeding groove 101 at the top of the cap feeding platform 3. The material trough 301 is located above the outer shell feeding trough 101. The core feeding platform 4 is provided with a core feeding trough 401 at its top. The guide platform 2 is provided with a guide groove 201 inside. The guide groove 201 is located directly above the outer shell feeding trough 101. The guide platform 2 located on the upper part of the periphery of the guide groove 201 is provided with a capping channel 202 connected to the capping feeding trough 301. The guide platform 2 located on the lower part of the periphery of the guide groove 201 is provided with a core channel 203 connected to the core feeding trough 401. During capacitor assembly, the capacitor casing 6 is placed in the casing feeding groove 101 and moves along the casing feeding groove 101 towards the guide groove 201. The capacitor cap 8 is placed in the cap feeding groove 301 and moves through the cap feeding groove 301 and the cap channel 202 towards the guide groove 201. The capacitor core 7 is placed in the core feeding groove 401 and moves through the core feeding groove 401 and the core channel 203 towards the guide groove 201. When the capacitor casing 6 moves to below the guide groove 201, since the top height of the core feeding platform 4 is lower than the top height of the cap feeding platform 3, the capacitor core 7 falls into the capacitor casing 6 first, and the capacitor cap 8 covers the capacitor core 7.
[0024] Among them, such as Figure 4 , Figure 5 As shown, a capacitor housing 6 is provided in the outer casing feeding groove 101, and the capacitor housing 6 is attached to the outer casing feeding groove 101. A capacitor cover 8 is provided in the cover feeding groove 301, and the capacitor cover 8 is attached to the cover feeding groove 301. A capacitor core 7 is provided in the core feeding groove 401, and the capacitor core 7 is attached to the core guide groove 201. In operation, a large number of capacitor casings 6 are placed in the casing feeding groove 101. When the capacitor casings 6 at the rear of the movement path move, they will squeeze and push the capacitor casings 6 at the front. A large number of capacitor caps 8 are placed in the cap feeding groove 301. When the capacitor caps 8 at the rear of the movement path move, they will squeeze and push the container caps at the front. A large number of capacitor cores 7 are placed in the core feeding groove 401. When the capacitor cores 7 at the rear of the movement path move, they will squeeze and push the capacitor cores 7 at the front.
[0025] Among them, such as Figure 2As shown, an arc-shaped outer shell push plate 102 is provided inside the outer shell feeding groove 101. A cylinder 103 is fixedly connected to one side of the worktable 1. The piston rod of the telescopic end of the cylinder 103 is fixedly connected to the outer arc surface of the outer shell push plate 102. When cylinder 103 is started, the piston rod on cylinder 103 is stretched, which drives the outer shell push plate 102 to push the capacitor shell 6 behind it. Due to the existence of the outer shell feeding groove 101, the capacitor shell 6 will only move downwards towards the guide groove 201. When the capacitor shell 6 moves to the bottom of the guide groove 201, the capacitor can be assembled.
[0026] Among them, such as Figure 4 As shown, the cross-sectional dimensions of the capping feeding trough 301 are the same as those of the capping channel 202. An arc-shaped capping push plate 302 is provided inside the capping feeding trough 301. A cylinder 303 is fixedly connected to the side of the capping feeding platform 3 away from the core feeding platform 4. The piston rod of the telescopic end of the cylinder 303 is fixedly connected to the outer arc surface of the capping push plate 302. When cylinder 2 303 is activated, the piston rod on cylinder 2 303 is stretched, which drives the cap push plate 302 to push the capacitor cap 8 behind it. Due to the presence of the cap feeding groove 301, the capacitor cap 8 will only move towards the cap channel 202 and the guide groove 201. The capacitor cap 8 can fall into the capacitor shell 6 through the cap channel 202, the guide groove 201 and the guide cylinder 204. When the capacitor cap 8 is about to move from the cap channel 202 into the guide groove 201, the cap channel 202 limits the capacitor cap 8 to prevent the capacitor cap 8 from tipping over due to the change in the center of gravity.
[0027] Among them, such as Figure 4 As shown, the cross-sectional dimensions of the core feeding groove 401 are the same as those of the core channel 203. An arc-shaped core push plate 402 is provided inside the core feeding groove 401. A cylinder 3 403 is fixedly connected to the side of the core feeding platform 4 away from the cap feeding platform 3. The piston rod of the telescopic end of the cylinder 3 403 is fixedly connected to the outer arc surface of the core push plate 402. When cylinder 3 403 is activated, the piston rod on cylinder 3 403 is stretched, which drives the core push plate 402 to push the capacitor core 7 behind it. Due to the existence of the core feeding groove 401, the capacitor core 7 will only move towards the core channel 203 and the guide groove 201. The capacitor core 7 can fall into the capacitor shell 6 through the core channel 203, the guide groove 201 and the guide cylinder 204. When the capacitor core 7 is about to move from the core channel 203 into the guide groove 201, the core channel 203 limits the capacitor core 7 to prevent the capacitor core 7 from tipping over due to the change in the center of gravity.
[0028] Among them, such as Figure 4 , Figure 5As shown, a guide cylinder 204 is fixedly connected to the bottom of the guide platform 2 located at the bottom of the guide groove 201. The inner diameter of the guide cylinder 204 is the same as the inner diameter of the guide groove 201, and the bottom of the guide cylinder 204 is higher than the top of the capacitor shell 6. When the capacitor cap 8 and capacitor core 7 fall from the guide groove 201, they first pass through the guide cylinder 204 and then fall into the capacitor housing 6. The guide cylinder 204 guides the capacitor core 7 and capacitor cap 8 without affecting the feeding of the capacitor housing 6.
[0029] Among them, such as Figure 4 As shown, a stamping cylinder 206 is fixedly connected to the top of the guide table 2. The piston rod at the telescopic end of the stamping cylinder 206 is fixedly connected to the end of the stamping part 205, which is close to it. The diameter of the stamping part 205 is the same as the inner diameter of the guide groove 201. After the capacitor core 7 and capacitor cover 8 fall into the capacitor housing 6 in sequence, the stamping cylinder 206 is activated. The piston rod on the stamping cylinder 206 is stretched, which drives the stamping part 205 to press down. After the capacitor cover 8 is stamped and fixed, the assembly of the capacitor is completed.
[0030] Among them, such as Figure 1 , Figure 3 As shown, the bottom ends of the guide table 2, the cap feeding table 3 and the core feeding table 4 are all fixedly connected to the support legs 5, which are fixedly connected to the worktable 1. The support leg 5 provides support for the guide table 2, the cap feeding table 3, and the core feeding table 4.
[0031] The working principle of this embodiment is as follows: During capacitor assembly, a large number of capacitor casings 6 are placed in the casing feeding groove 101, a large number of capacitor caps 8 are placed in the cap feeding groove 301, and a large number of capacitor cores 7 are placed in the core feeding groove 401. Simultaneously, cylinders 103, 303, and 403 are activated. Cylinders 103, 303, and 403 intermittently perform stretching and contraction operations with equal intervals. When the piston rod contracts, new capacitor casings 6, capacitor caps 8, and capacitor cores 7 are added. The piston rod on cylinder 103 stretches... The distance is equal to the outer diameter of the capacitor casing 6. When the piston rod on cylinder 103 extends, it drives the casing pusher plate 102 to push the capacitor casing 6 behind it in the movement path. As the capacitor casing 6 behind moves, it squeezes and pushes the capacitor casing 6 in front. The piston rod on cylinder 2 303 extends a distance equal to the diameter of the capacitor cover 8 each time. The extension of the piston rod on cylinder 2 303 drives the cover pusher plate 302 to push the capacitor cover 8 behind it. As the capacitor cover 8 behind moves, it squeezes and pushes the capacitor cover 8 in front. The piston rod on cylinder 3 403 extends a distance equal to the diameter of the capacitor cover 8 each time. The distance is the diameter of the capacitor core 7. The piston rod on cylinder 3 403 extends, causing the core pusher plate 402 to push the capacitor core 7 behind it. When the capacitor core 7 at the rear of the movement path moves, it will squeeze and push the capacitor core 7 in front. When the capacitor shell 6 moves to below the guide groove 201, the capacitor core 7 and the capacitor cover 8 enter the guide groove 201 from the core channel 203 and the cover channel 202 respectively, and fall into the capacitor shell 6 in sequence through the guide groove 201 and the guide cylinder 204. Since the top height of the core feeding platform 4 is lower than the top height of the cover feeding platform 3, the capacitor core 7 The capacitor will first fall into the capacitor housing 6, and the capacitor cover 8 will cover the capacitor core 7. Then, the stamping cylinder 206 will start, and the piston rod on the stamping cylinder 206 will stretch and drive the stamping part 205 to press down, stamping and fixing the capacitor cover 8, thus completing the assembly of a single capacitor. During the stamping operation, the piston rods on cylinder 103, cylinder 203 and cylinder 303 will all retract. After the stamping part 205 is reset and placed into the capacitor housing 6, capacitor cover 8 and capacitor core 7, the piston rods on cylinder 103, cylinder 203 and cylinder 303 will be stretched again to guide the assembly of the capacitor.
[0032] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.
Claims
1. A capacitor assembly guiding mechanism, comprising a worktable (1), a guide table (2), a capping feeding table (3), and a core feeding table (4); characterized in that: The workbench (1) is provided with a guide platform (2) at its top. A cap feeding platform (3) and a core feeding platform (4) are fixedly connected to both sides of the guide platform (2). The top height of the core feeding platform (4) is lower than the top height of the cap feeding platform (3). The top of the workbench (1) is provided with a shell feeding groove (101). The top of the cap feeding platform (3) located above the shell feeding groove (101) is provided with a cap feeding groove (301). The top of the core feeding platform (4) located above the shell feeding groove (101) is provided with a core feeding groove. The feeding groove (401) has a guide groove (201) inside the guide platform (2). The guide groove (201) is located directly above the outer shell feeding groove (101). The guide platform (2) located on the upper part of the periphery of the guide groove (201) has a sealing channel (202) connected to the sealing feeding groove (301). The guide platform (2) located on the lower part of the periphery of the guide groove (201) has a core channel (203) connected to the core feeding groove (401). The guide groove (201) is provided with a stamping part (205). A guide cylinder (204) is fixedly connected to the bottom of the guide platform (2) located at the bottom of the guide groove (201), and the inner diameter of the guide cylinder (204) is the same as the inner diameter of the guide groove (201).
2. The capacitor assembly guiding mechanism according to claim 1, characterized in that: An arc-shaped outer shell push plate (102) is provided inside the outer shell feeding groove (101). A cylinder (103) is fixedly connected to one side of the workbench (1). The piston rod of the extension end of the cylinder (103) is fixedly connected to the outer arc surface of the outer shell push plate (102).
3. The capacitor assembly guiding mechanism according to claim 1, characterized in that: The cross-sectional dimensions of the capping feed trough (301) are the same as those of the capping channel (202). An arc-shaped capping push plate (302) is provided inside the capping feed trough (301). A cylinder two (303) is fixedly connected to the side of the capping feed platform (3) away from the core feed platform (4). The piston rod of the telescopic end of the cylinder two (303) is fixedly connected to the outer arc surface of the capping push plate (302).
4. The capacitor assembly guiding mechanism according to claim 1, characterized in that: The cross-sectional dimensions of the core feeding groove (401) are the same as those of the core channel (203). An arc-shaped core push plate (402) is provided inside the core feeding groove (401). A cylinder three (403) is fixedly connected to the side of the core feeding platform (4) away from the cap feeding platform (3). The piston rod of the telescopic end of the cylinder three (403) is fixedly connected to the outer arc surface of the core push plate (402).
5. A capacitor assembly guiding mechanism according to claim 1, characterized in that: A stamping cylinder (206) is fixedly connected to the top of the guide platform (2). The piston rod of the extension end of the stamping cylinder (206) is fixedly connected to the end of the stamping part (205) that is close to it. The diameter of the stamping part (205) is consistent with the inner diameter of the guide groove (201).
6. A capacitor assembly guiding mechanism according to claim 1, characterized in that: The bottom ends of the guide platform (2), the cap feeding platform (3) and the core feeding platform (4) are all fixedly connected to the support legs (5) that are fixedly connected to the workbench (1).
7. A capacitor assembly guiding mechanism according to claim 1, characterized in that: A capacitor housing (6) is provided inside the outer casing feeding groove (101), and the capacitor housing (6) is attached to the outer casing feeding groove (101). A capacitor cap (8) is provided inside the cap feeding groove (301), and the capacitor cap (8) is attached to the cap feeding groove (301). A capacitor core (7) is provided inside the core feeding groove (401), and the capacitor core (7) is attached to the core guide groove (201). The bottom end of the guide cylinder (204) is higher than the top end of the capacitor housing (6).