Vacuum capacitor spiral electrode processing technology

Abstract

This invention discloses a processing technology for spiral electrodes of vacuum capacitors, relating to vacuum capacitor technology. It aims to solve the problem of maintaining a positioning copper strip tightly pressed against one edge of a copper strip along its length, and the necessity of timely spot welding after winding. The key technical points are: an electrode ring assembly arranged in a vortex shape, comprising a positioning copper strip and a copper strip. The positioning copper strip has a recessed groove, and the copper strip is embedded within the groove. This invention enables efficient and easy production of spiral electrodes for vacuum capacitors, resulting in a robust structure and significantly increased production volume.

Description

Technical Field

[0001] This invention relates to vacuum capacitor technology, and more specifically, to a process for fabricating spiral electrodes for vacuum capacitors. Background Technology

[0002] Traditional vacuum capacitor electrodes consist of electrode disks and electrode rings welded together. The electrode disk structure of traditional vacuum capacitors is complex to form, resulting in high material loss. It is formed from round bars through machining, involving numerous processing steps. Since the precision of the machine tools dictates the precision of the parts, further improvements in precision are not possible. Furthermore, this electrode disk structure can only use concentric circular electrode rings, which leads to high production costs, significant material loss, low production efficiency, and long turnaround times. However, with the widespread use of vacuum capacitors in high-frequency heater equipment and semiconductor etching equipment, higher demands are being placed on the manufacturing cycle and cost of vacuum capacitors. The electrode structure of traditional vacuum capacitors, which dictates the processing technology, production costs, and production cycle, cannot meet the market's demands and requirements.

[0003] Therefore, according to the spiral electrode for vacuum capacitor and its processing technology disclosed in CN103794362B, the key technical points are as follows: it includes a first electrode ring group and a second electrode ring group arranged in parallel. The first electrode ring group and the second electrode ring group respectively include a spiral positioning chip, a copper strip and a positioning copper strip. The positioning copper strip is located at one edge of the copper strip along its length direction. The copper strip and the positioning copper strip are spirally coiled together and fixed on the positioning chip. The first electrode ring group and the second electrode ring group are arranged on the same axis. The ends of the first electrode ring group and the second electrode ring group that are close to the positioning copper strip are far apart from each other. The spiral copper strips at the other end of the first electrode ring group and the spiral copper strips at the other end of the second electrode ring group are interlocked.

[0004] This process for manufacturing spiral electrodes for vacuum capacitors requires attaching one end of a copper strip tightly to a spiral positioning chip, pressing a positioning copper strip tightly against one edge of the copper strip along its length, and then winding and fixing the copper strip and positioning copper strip together around the positioning chip to form a first electrode ring group. After winding and fixing, the copper strip and positioning copper strip must be fixed by spot welding.

[0005] The above process is quite difficult in the process of pressing a positioning copper strip tightly against one side edge of the copper strip along its length and winding it into a spiral shape. It is difficult to keep the positioning copper strip tightly pressed against one side edge of the copper strip along its length. After the winding is completed, spot welding must be performed in time. Otherwise, the positioning copper strip and copper strip in the spiral electrode of the vacuum capacitor will detach. When reassembling and welding, a certain degree of error will inevitably occur, which will ultimately affect the use of the spiral electrode of the vacuum capacitor. Although the work efficiency is greatly improved compared with the conventional method, the yield is not optimistic.

[0006] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a processing technology for vacuum capacitor spiral electrodes, which can efficiently and easily complete the production of vacuum capacitor spiral electrodes, resulting in a robust structure and significantly increased production volume.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution, including the following steps:

[0009] Step 1, material preparation: Prepare copper strips in coils, and feed several copper strips into a drawing machine to draw them into positioning copper strips;

[0010] Step 2: Load the coiled copper strip onto the unwinding roller in the strip laminating machine;

[0011] Step 3: The copper strip unwinding section is placed between the worktable and the limit plate in the strip laminating machine;

[0012] Step 4: Insert the positioning copper strip into the guide groove in the strip laminating machine to complete the assembly of the copper strip with the positioning copper strip on both sides;

[0013] Step 5: The stamping assembly in the strip laminating machine completes the stamping process using an I-beam cutter;

[0014] Step 6: Take out the positioning copper strip and copper strip that are maintained in the assembly state after stamping, and wind them into an electrode ring assembly by a winding machine. The electrode ring assembly is arranged in a vortex shape and includes a positioning copper strip and a copper strip. The positioning copper strip has a groove that is recessed inward, and the copper strip is embedded in the groove. The two opposite inner walls of the groove are fixedly connected to protrusions facing the bottom surface. The copper strip abuts against the protrusions. The two opposite inner walls of the groove apply a compressive force to the copper strip in the thickness direction.

[0015] The present invention is further configured such that: the drawing machine includes a detachably connected mold, the mold has a concave through groove along its thickness direction, and the mold has two concave strip grooves communicating with the concave through groove, the concave strip grooves are used to form protrusions of copper strips, and the hardness of the mold is greater than the hardness of copper strips.

[0016] The present invention is further configured such that: the strip laminating machine includes an unwinding section and a composite shaping section, the unwinding section is used for loading and unwinding the rolled copper strip, and the composite shaping section is used for assembling the copper strip and positioning copper strip and stamping.

[0017] The present invention is further configured such that: the unwinding section includes a support frame, a servo motor fixedly connected to the support frame, an unwinding roller, and a plurality of guide rollers, wherein the output shaft of the servo motor passes through the support frame and is fixedly connected to the unwinding roller coaxially, and the plurality of guide rollers are rotatably connected to the support frame and are arranged on the same side as the unwinding roller.

[0018] The present invention is further configured such that: the composite shaping part includes a base, a worktable fixedly connected to the top surface of the base, and a mounting frame fixedly connected to the top of the base and located above the worktable; a stamping assembly is fixedly connected to the mounting frame; a push plate is fixedly connected to the movable end of the stamping assembly; an I-beam cutter is fixedly connected to the bottom surface of the push plate; an I-beam through slot corresponding to the I-beam cutter is provided on the worktable; and a plurality of lifting members are provided on the worktable. The height of the lifting members is adjustable in the vertical direction, and their maximum horizontal height is greater than the top horizontal height of the worktable, while the minimum horizontal height of the lifting members is less than the top horizontal height of the worktable.

[0019] The invention is further configured such that: a plurality of through slots are provided on the worktable, and a sliding groove is provided on the two opposite inner walls of the through slots, one end of which vertically penetrates the top surface of the worktable; the lifting component includes a roller, a rotating shaft coaxially fixedly connected to both ends thereon, and a spring; the rotating shaft is slidably connected in the sliding groove, and one end of the spring is fixedly connected to the bottom end of the sliding groove while the other end is in contact with the rotating shaft; the minimum elastic deformation force of the spring is greater than the sum of the weights of the roller, rotating shaft, positioning copper strip, and copper strip, and its maximum elastic deformation force is less than the minimum force of the stamping assembly.

[0020] The invention is further configured such that: a connecting plate located directly above the workbench is fixedly connected inside the mounting frame by an L-shaped angle steel and bolts; a limiting plate with a width smaller than that of the copper strip is fixedly connected to the bottom surface of the connecting plate; and limiting strips located on both sides of the limiting plate are fixedly connected to the bottom surface of the connecting plate; a guide groove is formed between the limiting strips and the limiting plate; and an I-shaped groove corresponding to the I-shaped through groove is opened on the top surface of the connecting plate, penetrating the limiting plate and the limiting strips.

[0021] The present invention is further configured such that step 6 includes shaping the spiral electrode ring assembly from the center of the bottom surface, so that there is a height difference of 0.05-0.3mm between the positioning copper strips of adjacent rings from the outside to the inside.

[0022] In summary, the present invention has the following beneficial effects:

[0023] Through the above process, a vacuum capacitor spiral electrode that can be assembled and connected without spot welding can be obtained. Compared with the existing technology, the vacuum capacitor spiral electrode can save at least half the time, improve the energy efficiency of the final output by more than double, and produce products with the same quality as existing vacuum capacitor spiral electrodes in a shorter time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the spiral electrode of the vacuum capacitor in this invention;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 This is a schematic diagram of the drawing machine in this invention;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 This is a schematic diagram of the strip laminating machine in this invention;

[0029] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0030] Figure 7 The explosion of the strip laminating machine in this invention Figure 1 ;

[0031] Figure 8 The explosion of the strip laminating machine in this invention Figure 2 ;

[0032] Figure 9 for Figure 8 Enlarged view of point D in the middle;

[0033] Figure 10 This is a partial sectional view of the base and worktable in this invention;

[0034] Figure 11 for Figure 10 Enlarged view at point E in the middle;

[0035] Figure 12 for Figure 11 Enlarged view of point F in the middle.

[0036] In the diagram: 1. Positioning copper strip; 101. Groove; 102. Protrusion; 2. Copper strip; 3. Drawing machine; 301. Die; 302. Through groove; 303. Through strip groove; 401. Support frame; 402. Unwinding roller; 403. Guide roller; 501. Base; 502. Worktable; 5021. Through groove; 5022. Through slot; 5023. Slide groove; 503. Mounting frame; 504. Connecting plate; 5041. Limiting plate; 5042. Limiting strip; 5043. Guide groove; 5044. Through groove; 505. Stamping assembly; 506. Push plate; 507. I-beam cutter; 508. Roller; 5081. Rotating shaft; 5082. Spring. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0038] The fabrication process of the spiral electrode for this vacuum capacitor includes the following steps:

[0039] Step 1, material preparation: Prepare a coiled copper strip 2, and feed several copper strips into a drawing machine 3 to draw them into positioning copper strips 1.

[0040] like Figure 3 and 4 As shown, the drawing machine 3 includes a detachably connected mold 301. The mold 301 has a concave through groove 302 along its thickness direction, and two concave strip grooves 303 connected to the concave through groove 302 are provided on the mold 301. The concave strip grooves 303 are used to form protrusions 102 on the copper strip. The hardness of the mold 301 is greater than the hardness of the copper strip.

[0041] The copper strip is fed into the drawing machine 3 and passes through the mold 301 of the drawing machine 3. Under the action of the drawing process, the cross section of the copper strip can adapt to the concave through groove 302 and the concave strip groove 303, thereby forming a positioning copper strip 1. The positioning copper strip 1 has a groove 101 that is recessed into its interior. The two inner walls of the groove 101 are integrally formed with protrusions 102 that are inclined towards their bottom surface.

[0042] Step 2: Load the rolled copper strip 2 onto the unwinding roller 402 in the strip laminating machine.

[0043] like Figure 5 As shown, the strip laminating machine includes an unwinding section and a laminating and shaping section. The unwinding section is used to load and unwind the rolled copper strip 2, and the laminating and shaping section is used to complete the assembly and stamping of the copper strip 2 and the positioning copper strip 1.

[0044] The unwinding section includes a support frame 401, a servo motor fixedly connected to the support frame 401, an unwinding roller 402, and several guide rollers 403. The output shaft of the servo motor passes through the support frame 401 and is coaxially fixedly connected to the unwinding roller 402. Several guide rollers 403 are rotatably connected to the support frame 401 and are arranged on the same side as the unwinding roller 402. Several servo motors are also fixedly connected to the support frame 401. The output shaft of the servo motors passes through the support frame 401 and is coaxially fixedly connected to the guide rollers 403.

[0045] In this way, when the copper strip 2 needs to be unwound, only the servo motor needs to be started. The servo motor 2 will be driven by the guide roller 403 to extend the copper strip 2 outward, and the unwinding roller 402 can unload the coiled copper strip 2 and keep the copper strip 2 between the guide roller 403 and the unwinding roller 402 taut and prevent it from sagging.

[0046] Step 3: The unwinding portion of copper strip 2 is placed between the worktable 502 and the limiting plate 5041 in the strip laminating machine.

[0047] like Figure 5-9 As shown, the composite forming part of the strip laminating machine includes a base 501, a worktable 502 fixedly connected to the top surface of the base 501, and a mounting frame 503 fixedly connected to the top of the base 501 and located above the worktable 502. A stamping assembly 505 is fixedly connected to the mounting frame 503. A push plate 506 is fixedly connected to the movable end of the stamping assembly 505. An I-beam cutter 507 is fixedly connected to the bottom surface of the push plate 506. An I-beam through slot 5021 corresponding to the I-beam cutter 507 is opened on the worktable 502. Several lifting components are provided on the worktable 502. The height of the lifting components is adjustable in the vertical direction, and its maximum horizontal height is greater than the top horizontal height of the worktable 502, while the minimum horizontal height of the lifting components is less than the top horizontal height of the worktable 502.

[0048] like Figure 10-12 As shown, the worktable 502 has several through slots 5022, and the inner walls of the two opposite slots 5022 have a sliding groove 5023 that extends vertically through the top surface of the worktable 502. The lifting component includes a roller 508, a rotating shaft 5081 coaxially fixed at both ends, and a spring 5082. The rotating shaft 5081 is slidably connected in the sliding groove 5023, and one end of the spring 5082 is fixedly connected to the bottom end of the sliding groove 5023 while the other end is in contact with the rotating shaft 5081. The minimum elastic deformation force of the spring 5082 is greater than the sum of the weights of the roller 508, the rotating shaft 5081, the positioning copper strip 1, and the copper strip 2, and its maximum elastic deformation force is less than the minimum force of the stamping assembly 505. The diameter of the spring 5082 is 5-15mm.

[0049] The mounting bracket 503 is fixedly connected to a connecting plate 504 located directly above the workbench 502 by L-shaped angle steel and bolts. The bottom surface of the connecting plate 504 is fixedly connected to a limiting plate 5041 with a width less than that of the copper strip 2, and the bottom surface of the connecting plate 504 is fixedly connected to limiting strips 5042 located on both sides of the limiting plate 5041. The limiting strips 5042 and the limiting plate 5041 form a guide groove 5043. The top surface of the connecting plate 504 has an I-shaped groove 5044 that penetrates the limiting plate 5041 and the limiting strips 5042 and corresponds to the I-shaped through groove 5021.

[0050] When the copper strip 2 is unwound between the worktable 502 and the limiting plate 5041 in the strip laminating machine, the copper wire first contacts the roller 508, causing the spring 5082 to push against the rotating shaft 5081, the roller 508, and the copper strip 2, keeping the copper strip 2 from contacting the top surface of the worktable 502. The copper strip 2 will then contact the bottom surface of the limiting plate 5041. When the length of the copper strip 2 entering the strip laminating machine is the same as the length of the worktable 502, the servo motor and the second servo motor will stop working, causing the copper strip 2 to stop moving.

[0051] Step 4: Insert the positioning copper strip 1 into the guide groove 5043 in the strip laminating machine to complete the assembly of the copper strip 2 with the positioning copper strip 1 on both sides.

[0052] The maximum horizontal height of roller 508 and the horizontal height of the bottom surface of limiting plate 5041 are less than the thickness of copper strip 2, so that roller 508 always keeps in contact with the bottom surface of copper strip 2, clamping it between roller 508 and the bottom surface of limiting plate 5041.

[0053] Then, the positioning copper strip 1 is manually inserted into the guide groove 5043. Under the restriction of the limiting strip 5042 and the limiting plate 5041, the positioning copper strip 1 cannot be deviated during the assembly process with the copper strip 2. This allows the edge of the copper strip 2 to be embedded into the groove 101 of the positioning copper strip 1. Furthermore, the compression of the copper strip 2 against the protrusion 102 causes the protrusion 102 to carry the positioning copper strip 1 on both sides of the groove 101 to clamp the copper strip 2. This means that the connection between the copper strip 2 and the positioning copper strip 1 is not only achieved through friction, but also by further increasing the friction generated by clamping, making the structure of the two more robust.

[0054] Step 5: The stamping assembly 505 in the strip composite machine completes the stamping process using the I-beam cutter 507.

[0055] The stamping assembly 505 is the stamping machine. The stamping assembly 505 drives the push plate 506 to move downward, so that the push plate 506 carries the I-beam cutter 507 through the I-beam groove 5044, the copper strip 2 and the positioning copper strip 1, and the I-beam through groove 5021 in sequence, thereby completing the stamping and cutting of the copper strip 2 and the positioning copper strip 1. When the copper strip 2 and the positioning copper strip 1 move downward with the I-beam cutter 507, the copper strip 2 and the positioning copper strip 1 can also transmit the force to the roller 508, so that the force of the roller 508 can be transmitted to the spring 5082 through the rotating shaft 5081, so that the spring 5082 is compressed, causing the roller 508 to fall into the through groove 5022, so that the copper strip 2 and the positioning copper strip 1 are placed flat on the worktable 502.

[0056] The I-beam cutter 507 can penetrate the I-beam through slot 5021, so that it completely cuts the copper strip 2 and the positioning copper strip 1, and obtains two fully assembled copper strips 2 and positioning copper strips 1 at one time.

[0057] Step 6: Remove the positioning copper strip 1 and copper strip 2, which have been stamped and maintained in their assembled state, and wind them into an electrode ring assembly using a winding machine. Shape the spiral electrode ring assembly from the bottom center, ensuring a height difference of 0.05-0.3mm between adjacent turns of the positioning copper strip 1 from the outside inwards. Figure 1 and 2 As shown, the electrode ring assembly includes an electrode ring group arranged in a vortex shape, and the electrode ring group includes a positioning copper strip 1 and a copper strip 2. The positioning copper strip 1 has a groove 101 recessed into it, and the copper strip 2 is embedded in the groove 101. The two inner walls of the groove 101 are fixedly connected to the protrusions 102 facing the bottom surface. The copper strip 2 is positioned to abut against the protrusions 102. The two inner walls of the groove 101 apply a compressive force to the copper strip 2 in the thickness direction. The positioning copper strip 1 is made of TU1 oxygen-free copper material, and the copper strip 2 is made of high-conductivity oxygen-free copper material.

[0058] The spiral electrode ring assembly is shaped from the center of the bottom surface, so that there is a height difference of 0.05-0.3mm between the positioning copper strips 1 of adjacent turns from the outside to the inside. This allows the positioning copper strips 1 in the electrode ring assembly to deform further and maintain a more secure connection with the copper strip 2. At the same time, during the winding process, since the positioning copper strips 1 will deform and do not have good elastic recovery properties, the two side walls of the groove 101 in the positioning copper strips 1 can provide a more secure clamping effect on the copper strip 2 in the groove 101, making it difficult for the two to separate and further increasing the contact area between them.

[0059] After the connection is completed, the positioning copper strip 1 and copper strip 2 can be directly wound into a spiral shape, i.e., a vortex shape, by a winding machine to obtain the electrode ring assembly. There is no need to keep the copper strip 2 and the positioning copper strip 1 in constant contact during the winding process of the electrode ring assembly, nor is it necessary to perform spot welding. This avoids the situation where the copper strip 2 and the positioning copper strip 1 separate during the production of the electrode ring assembly, and can also significantly shorten the time consumed by welding between the copper strip 2 and the positioning copper strip 1. Since spot welding currently leaves weld points on the copper strip 2 and the positioning copper strip 1, the copper strip 2 and the positioning copper strip 1 after spot welding still need to be ground, and spot welding at a single position takes 3-5 seconds. The preparation time of the entire electrode ring assembly can be shortened by at least 1 minute. The time for spot welding and grinding accounts for half or even more of the entire electrode ring assembly winding and forming time, which can increase the current electrode ring assembly production efficiency by 100% or even more.

[0060] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A processing method for a spiral electrode of a vacuum capacitor, characterized in that: Includes the following steps, Step 1, material preparation, prepare a coiled copper strip (2), feed several copper strips into a drawing machine (3) to draw into a positioning copper strip (1). Step 2: Load the rolled copper strip (2) onto the unwinding roller (402) in the strip laminating machine; Step 3, the unwinding portion of the copper strip (2) is placed between the worktable (502) and the limiting plate (5041) in the strip laminating machine; Step 4: Insert the positioning copper strip (1) into the guide groove (5043) in the strip laminating machine to complete the assembly of the copper strip (2) and the positioning copper strip (1) on both sides; Step 5, the stamping assembly (505) in the strip laminating machine completes the stamping by means of the I-beam cutter (507); Step 6: Take out the positioning copper strip (1) and copper strip (2) that have been stamped and maintained in the assembly state, and wind them into an electrode ring assembly using a winding machine; The electrode ring assembly is arranged in a vortex shape, and the electrode ring assembly includes a positioning copper strip (1) and a copper strip (2). The positioning copper strip (1) has a groove (101) that is recessed into it, and the copper strip (2) is embedded in the groove (101). The groove (101) has two protrusions (102) fixedly connected to its bottom surface on its two opposite inner walls. The copper strip (2) is positioned to abut against the protrusions (102). The groove (101) has two opposite inner walls that apply a compressive force to the copper strip (2) in the thickness direction.

2. The processing technology of the vacuum capacitor spiral electrode according to claim 1, characterized in that: The drawing machine (3) includes a detachably connected mold (301), the mold (301) having a concave through groove (302) along its thickness direction, and the mold (301) having two concave strip grooves (303) communicating with the concave through groove (302), the concave strip grooves (303) being used to form protrusions (102) of the copper strip, and the hardness of the mold (301) being greater than the hardness of the copper strip.

3. The processing technology of the vacuum capacitor spiral electrode according to claim 1, characterized in that: The strip laminating machine includes an unwinding section and a composite shaping section. The unwinding section is used to load and unwind the rolled copper strip (2). The composite shaping section is used to complete the assembly and stamping of the copper strip (2) and the positioning copper strip (1).

4. The processing technology of the vacuum capacitor spiral electrode according to claim 3, characterized in that: The unwinding section includes a support frame (401), a servo motor fixedly connected to the support frame (401), an unwinding roller (402), and several guide rollers (403). The output shaft of the servo motor passes through the support frame (401) and is fixedly connected to the unwinding roller (402) on the same axis. The several guide rollers (403) are rotatably connected to the support frame (401) and are arranged on the same side as the unwinding roller (402).

5. The processing technology of the vacuum capacitor spiral electrode according to claim 3, characterized in that: The composite shaping unit includes a base (501), a worktable (502) fixedly connected to the top surface of the base (501), and a mounting bracket (503) fixedly connected to the top of the base (501) and located above the worktable (502). A stamping assembly (505) is fixedly connected to the mounting bracket (503). A push plate (506) is fixedly connected to the movable end of the stamping assembly (505). An I-beam cutter (507) is fixedly connected to the bottom surface of the push plate (506). An I-beam through slot (5021) corresponding to the I-beam cutter (507) is provided on the worktable (502). Several lifting components are provided on the worktable (502). The height of the lifting components is adjustable in the vertical direction, and its maximum horizontal height is greater than the horizontal height of the top surface of the worktable (502), while the minimum horizontal height of the lifting components is less than the horizontal height of the top surface of the worktable (502).

6. The processing technology of the vacuum capacitor spiral electrode according to claim 5, characterized in that: The workbench (502) is provided with several through slots (5022), and the two opposite inner walls of the through slots (5022) are provided with a sliding groove (5023) that extends vertically through the top surface of the workbench (502). The lifting component includes a roller (508), a rotating shaft (5081) coaxially fixedly connected to both ends of the roller (508), and a spring (5082). The rotating shaft (5081) is slidably connected in the sliding groove (5023), and one end of the spring (5082) is fixedly connected to the bottom end of the sliding groove (5023), while the other end is in contact with the rotating shaft (5081). The minimum elastic deformation force of the spring (5082) is greater than the sum of the weights of the roller (508), the rotating shaft (5081), the positioning copper strip (1), and the copper strip (2), and its maximum elastic deformation force is less than the minimum force of the stamping assembly (505).

7. The processing technology of the vacuum capacitor spiral electrode according to claim 6, characterized in that: The mounting bracket (503) is fixedly connected to a connecting plate (504) located directly above the workbench (502) by L-shaped angle steel and bolts. The bottom surface of the connecting plate (504) is fixedly connected to a limiting plate (5041) with a width smaller than that of the copper strip (2). The bottom surface of the connecting plate (504) is fixedly connected to limiting strips (5042) located on both sides of the limiting plate (5041). A guide groove (5043) is formed between the limiting strips (5042) and the limiting plate (5041). The top surface of the connecting plate (504) is provided with an I-shaped groove (5044) that penetrates the limiting plate (5041) and the limiting strips (5042) and corresponds to the I-shaped through groove (5021).

8. The processing technology of the vacuum capacitor spiral electrode according to claim 1, characterized in that: Step 6 also includes shaping the spiral electrode ring assembly from the bottom center, so that there is a height difference of 0.05-0.3mm between the positioning copper strips (1) of adjacent rings from the outside to the inside.

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