CN114944289A

CN114944289A - Capacitor assembly device

Info

Publication number: CN114944289A
Application number: CN202210465289.9A
Authority: CN
Inventors: 邹润华; 林薏竹
Original assignee: Capxon Electronic Shen Zhen Co ltd
Current assignee: Capxon Electronic Shen Zhen Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-26

Abstract

The invention relates to a capacitor assembly device, comprising: assembling a vertical die, a beam die and a pressure rod; the device is characterized in that the assembling die is arranged between the pressure rod and the beam die; the assembling die consists of a first clamp and a second clamp which are arranged oppositely and can be close to and far away from each other; the first clamp and the second clamp are respectively provided with a first arc groove and a second arc groove; the first arc groove and the second arc groove are combined to form a die cavity for assembly; the first clamp is provided with a first groove and a second groove; the second clamp is provided with a third groove; a first elastic sheet and a second elastic sheet are respectively arranged in the first groove and the second groove; the third groove is provided with a third elastic sheet; the first elastic sheet and the third elastic sheet are in mutual pressing contact; the inner wall of the die cavity is sealed by the second elastic sheet in extrusion contact with the second surface of the second clamp, so that the technical problem that negative pressure leakage is caused after the assembly vertical die is slightly opened, and the air tightness of the shell and the sub negative pressure assembly is influenced is solved, the negative pressure assembly is realized, and the service life of a product is prolonged.

Description

Capacitor assembly device

Technical Field

The invention belongs to the field of capacitor manufacturing, and particularly relates to a capacitor assembly device.

Background

The capacitor is one of the electronic components used in a large number of electronic devices and is an indispensable component in a circuit, the capacitor can emit heat in the working process, and the capacitor assembled under normal pressure can generate gas in the working process, so that the internal pressure is increased, the capacitor is exploded, and the service life of the capacitor is short. The negative pressure assembled capacitor can not generate gas, and the service life of the negative pressure assembled capacitor can be prolonged. The conventional capacitor is assembled under normal atmospheric pressure when the capacitor is assembled and packaged. In another case, during negative pressure packaging, the inside of the capacitor obtained after assembly packaging is also in a normal pressure state due to insufficient air tightness of the device. The traditional assembly packaging equipment is generally used for assembling and packaging in a bare environment under normal air pressure or in a poor air tightness with negative pressure leakage, is easily influenced by the external environment, cannot avoid air and dust from entering a plain core, and cannot obtain a capacitor with internal negative pressure after being assembled.

Disclosure of Invention

Therefore, a capacitor assembly device is needed to be provided to solve the technical problem that the airtight sealing between the shell and the element negative pressure assembly is affected due to the leakage of the negative pressure caused by slight opening of the assembly mold in the prior art.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a capacitor assembly apparatus, comprising: assembling a vertical die, a beam die and a pressure rod; the assembling die is characterized in that the assembling die is arranged between the pressure rod and the beam die; the assembling die consists of a first clamp and a second clamp which are arranged oppositely and can be close to and far away from each other; the first clamp and the second clamp are respectively provided with a first arc groove and a second arc groove; the first arc groove and the second arc groove which are oppositely arranged can be combined to form a die cavity for assembly; a first groove and a second groove are formed in the first surface of the first clamp; a third groove is formed in the second surface of the second clamp; a first elastic sheet and a second elastic sheet are respectively arranged in the first groove and the second groove; the third groove is provided with a third elastic sheet; when the first clamp and the second clamp are combined oppositely, one side of the first elastic sheet and one side of the third elastic sheet are in mutual pressing contact; the second elastic sheet is in extrusion contact with the second surface of the second clamp so as to seal the inner wall of the die cavity; the inclined parts are used for guiding the short parts of the assembled knife to be in sliding contact, so that the short parts can easily slide to fall into the contact surfaces of the first elastic sheet and the third elastic sheet.

Further, the depression bar be close to the one end of group founding the mould be provided with the group founding sword, the group founds the sword and includes long portion and short portion formation ladder face, long portion be used for the propelling movement extrusion son, short portion and first shell fragment, third shell fragment sliding contact for the position of location long portion in the die cavity, the group found the sword and do and keep away from or be close to the action of die cavity for with casing and son pressure closure in the die cavity.

Furthermore, the first elastic sheet and the third elastic sheet are respectively provided with elastic forces far away from the bottoms of the first groove and the third groove, so that the opposite side faces of the first elastic sheet and the third elastic sheet are mutually extruded.

Furthermore, the size of the first arc groove and the second arc groove is respectively half of the circumference.

Furthermore, the die cavity further comprises a conical through groove and a circular through groove, the conical through groove and the circular through groove are respectively arranged at two end parts of the die cavity, the fourth groove and the sixth groove are combined to form the conical through groove, the fifth groove and the seventh groove are combined to form the circular through groove, and the inner diameter of the circular through groove is larger than that of the die cavity.

Furthermore, the two sides of the first clamp and the second clamp are respectively provided with an air suction assembly, and the air suction assemblies are communicated with the die cavity.

Furthermore, the assembling die performs the action of approaching or departing from the beam die to sleeve the shell in the beam die in the die cavity, and the beam die slot part is composed of a plurality of wall parts which can be far away or approach the central point of the slot part to clamp or loosen the shell.

The invention has the advantages and positive effects that:

the invention discloses a capacitor assembly device, which aims to solve the technical problem that in the prior art, the air sealing of a shell and an element negative pressure assembly is influenced due to the fact that negative pressure leaks after an assembly mold is slightly opened. Compared with the prior art, the invention has the following advantages:

1. according to the invention, the elastic sheet is arranged on the assembling die and used for sealing the assembling die, so that the assembling die is prevented from slightly opening to leak negative pressure when being pressed by the assembling knife, the negative pressure assembling and packaging are realized, and the effect of improving the product performance is achieved.

2. Through negative pressure assemblage in the assemblage mould, in the assemblage back plain son inserts the casing, on the negative pressure adsorbs the plain son with the inside electrolyte of casing, makes the plain son more fully absorb electrolyte under the negative pressure for the performance of condenser is more stable, and life is longer.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the opened three-dimensional structure of the assemblage mold of the present invention.

Fig. 3 is a schematic view of a second clamp of the present invention with a housing and element structure.

Fig. 4 is a schematic view of a first clamp structure of the present invention.

Fig. 5 is a schematic view of a second clamp structure of the present invention.

Fig. 6 is a schematic structural view of the assembling die before the assembling knife of the present invention is pressed down.

Fig. 7 is a schematic view of the structure of the assembled die after the assembled knife of the present invention is pressed down.

Fig. 8 is a schematic diagram of the structure of the distribution of the elastic pieces in the assembling die of the invention.

Fig. 9 is a schematic structural view of a second clamp and an assembled knife according to the present invention.

FIG. 10 is a schematic view of the cavity position of the assembled die of the present invention.

The reference numbers illustrate: 1. assembling a mold; 2. bundling a mould; 3. a pressure lever; 4. a housing; 5. a prime; 101. a first clamp; 102. a second clamp; 103. a mold cavity; 104. a getter assembly; 105. a bevel portion; 201. a groove part; 202. a wall portion; 301. assembling a vertical knife; 302. a long portion; 303. a short portion; 1011. a first surface; 1012. a first arc groove; 1013. a fourth groove; 1014. a fifth groove; 1015. a first groove; 1016. a second groove; 1017. a first spring plate; 1018. a second elastic sheet; 1021. a second surface; 1022. a second arc groove; 1023. a sixth groove; 1024. a seventh groove; 1025. a third groove; 1026. a third elastic sheet; 1031. a tapered through slot; 1032. a circular through groove.

Detailed Description

The embodiments of the invention will be described in further detail with reference to the accompanying drawings: the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or components must have a particular orientation or be constructed and operated in a particular orientation, and therefore, are not to be considered limiting. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, the term "comprises" and any variations thereof mean "including at least". In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integrally formed connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 10, a capacitor assembly apparatus according to the present invention includes: the assembling die comprises a group vertical die 1, a beam die 2 and a pressure rod 3; the assembling die is characterized in that the assembling die 1 is arranged between the pressure rod 3 and the beam die 2; the assembling die 1 comprises a first clamp 101 and a second clamp 102 which are oppositely arranged and can be close to and far away from each other; the first clamp 101 and the second clamp 102 are respectively provided with a first arc groove 1012 and a second arc groove 1022; the oppositely disposed first arc groove 1012 and second arc groove 1022 can be combined to form a mold cavity 103 for assembly; the first surface 1011 of the first clamp 101 is provided with a first groove 1015 and a second groove 1016; the second surface 1021 of the second clamp 102 is provided with a third groove 1025; a first elastic sheet 1017 and a second elastic sheet 1018 are respectively arranged in the first groove 1015 and the second groove 1016; the third groove 1025 is provided with a third elastic sheet 1026; when the first clamp 101 and the second clamp 102 are combined oppositely, one side of the first elastic sheet 1017 and one side of the third elastic sheet 1026 are in mutual pressing contact; the second resilient tab 1018 is in pressing contact with the second surface 1021 of the second fixture 102 to seal the inner wall of the mold cavity 103.

In some embodiments, with reference to fig. 1-10, a capacitor assembly apparatus includes: the assembling die comprises an assembling die 1, a binding die 2 and a pressure rod 3, wherein the assembling die 1 is used for pressing a shell 4 and an element 5 in a die cavity 103, so that the element 5 is inserted into an inner cavity of the shell 4 and pressed with the shell 4 into a whole in a negative pressure state. The press rod 3 is used for feeding the element 5 into the assembling die 1, and simultaneously, the press rod 3 approaches the assembling die 1, so that the assembling knife 301 presses the element 5 to approach the shell 4 and to enter the shell 4 at a preset position. The beam mould 2 is used for loading the shell 4, and the beam mould 2 can be jointed with one end of the assembling mould 1 opposite to the assembling mould. During operation, the beam die 2 can move towards or away from the axis of the cavity 103 in a direction perpendicular to the axis of the cavity 103 of the assembled die 1. The suction assemblies 104 on two sides of the assembling die 1 are used for sucking the die cavity 103, so that the die cavity 103 is in a negative pressure state, and the assembling of the shell 4 and the element 5 under the negative pressure is realized. The air-tight sealing device solves the technical problem that in the prior art, the air-tight sealing of the shell and the element negative pressure assembly is influenced due to the fact that the negative pressure is leaked after the assembly vertical die is slightly opened.

More specifically, the housing 4 is an aluminum shell, i.e., a cylindrical cup-shaped body made of aluminum material by casting or punching. The shape of the element 5 is a cylinder, and the outer diameter of the sealing position of the element 5 is larger than the inner diameter of the shell 4. The element 5 is formed by combining and looping aluminum foil, a guide pin and electrolytic paper into a cylinder shape.

In some embodiments, the erection module 1 may be driven by other means so that the bottom end of the erection module 1 is close to or away from the bundle module 2. So that the assembling die 1 and the beam die 2 complete the sleeving or separating action. Specifically, the group standing die 1 comprises a first clamp 101 and a second clamp 102 which are oppositely arranged and can be close to and far away from each other; the first clamp 101 and the second clamp 102 have the same structure and are symmetrically designed in space, and the first clamp 101 and the second clamp 102 are respectively provided with a first arc groove 1012 and a second arc groove 1022; the oppositely disposed first arc groove 1012 and second arc groove 1022 can be combined to form a mold cavity 103 for assembly; the first surface 1011 of the first clamp 101 is provided with a first groove 1015 and a second groove 1016; the second surface 1021 of the second clamp 102 is provided with a third groove 1025; a first elastic sheet 1017 and a second elastic sheet 1018 are respectively arranged in the first groove 1015 and the second groove 1016; the third groove 1025 is provided with a third elastic sheet 1026; when the first clamp 101 and the second clamp 102 are combined oppositely, one side of the first elastic sheet 1017 and one side of the third elastic sheet 1026 are in mutual pressing contact; the second resilient tab 1018 is in pressing contact with the second surface 1021 of the second fixture 102 to seal the inner wall of the mold cavity 103.

The first clamp 101 and the second clamp 102 are respectively provided with a first arc groove 1012 and a second arc groove 1022, and specifically, the size of the first arc 1021 and the size of the second arc 1022 are respectively half of a circle. The first arc groove 1021 and the second arc groove 1022 have the same radius, and the radius is not particularly limited, and in practical application, the specific radius is smaller than the outer diameter of the sealing part of the element 5, and is specifically controlled to be 0.15-0.25 mm. After the first and second

opposite surfaces

1011, 1021 of the first and

second clamps

101, 102 are close to each other, the first and

second clamps

101, 102 are combined into the vertical mold 1, and the first and

second arc grooves

1021, 1022 constitute the mold cavity 103.

In some embodiments, the mold cavity 103 further comprises a tapered through slot 1031 and a circular through slot 1032, the tapered through slot 1031 and the circular through slot 1032 are respectively disposed at two ends of the mold cavity 103, the fourth recess 1013 and the sixth recess 1023 are combined to form the tapered through slot 1031, the fifth recess 1014 and the seventh recess 1024 are combined to form the circular through slot 1032, and the inner diameter of the circular through slot 1032 is larger than the inner diameter of the mold cavity 103.

When the first and

second clamps

101, 102 are combined to form the cavity 103, the cavity 103 provides a space for the housing 4 and the element 5. The one end that depression bar 3 is close to group stand mould 1 be provided with group and found sword 301, group found sword 301 includes long portion 302 and short portion 303 formation ladder face, long portion 302 be used for the propelling movement to extrude plain 5, short portion 303 and first shell fragment 1017, third shell fragment 1026 sliding contact for the position of long portion 302 in die cavity 103, group found sword 301 do keep away from or be close to the action of die cavity 103 for with casing 4 and plain 5 pressfitting in die cavity 103.

The assembling die 1 moves close to or away from the beam die 2 to sleeve the shell 4 in the beam die 2 in the die cavity 103. The beam mold 2 has a groove 201 formed by a plurality of walls 202, which can be far away from or close to the center point of the groove 201 for clamping or releasing the housing 4.

In the assembling process, the element 5 is first transferred to the cavity 103 by the press rod 3. Specifically, the pressing rod 3 and the set standing knife 301 move away from or close to the mold cavity 103, while the pressing rod 3 moves close to the set standing die 1, the long part 302 of the set standing knife 301 contacts with the element 5 and moves the element 5 into the tapered through groove 1031 at the end of the mold cavity 103, and the tapered through groove 1031 is arranged, so that the pressing rod has a guiding function on the element 5, the element 5 is easy to insert into the mold cavity 103, in some embodiments, the outer diameter of the sealing position of the element 5 is larger than the inner diameter of the mold cavity 103, and the sealing position of the element 5 has elasticity. When the mold is assembled, the pressing rod 3 is pressed downwards to drive the assembling knife 301 to move, the long part 302 of the assembling knife 301 pushes the element into the mold cavity 103 and enables the element to approach one end of the shell 4 along the inner wall of the mold cavity 103, and in the process, the seal of the element 5 is in close contact with the inner wall of the mold cavity 103, so that the mold cavity 103 has air tightness.

The circular through slots 1032 in the mold cavity 103 at the other end away from the tapered through slots 1031 have an inner diameter greater than the inner diameter of the mold cavity 103. The specific circular through groove 1032 is used for sleeving the shell 4, more specifically, the hollow end in the shell 4 is provided with an opening, the opening end is provided with a flaring, the outer diameter of the flaring is slightly larger than the inner diameter of the circular through groove 1032, the end with the flaring of the shell 4 faces the element 5, and when the shell 4 is inserted into the circular through groove 1032, the flaring of the shell 4 is in pressing contact with the inside of the circular through groove 1032, so that the shell 4 and the circular through groove 1032 have air tightness.

In some embodiments, the first clamp 101 and the second clamp 102 are respectively provided with a resilient piece 1017, a second resilient piece 1018, and a third resilient piece 1026. Specifically, the first surface 1011 of the first clamp 101 is provided with a first groove 1015 and a second groove 1016; the second surface 1021 of the second clamp 102 is provided with a third groove 1025; a first elastic sheet 1017 and a second elastic sheet 1018 are respectively arranged in the first groove 1015 and the second groove 1016; the third groove 1025 is provided with a third resilient piece 1026. The first elastic sheet 1017 and the third elastic sheet 1026 respectively have bottom elasticity far away from the first groove 1015 and the third groove 1025, so that one side surfaces of the first elastic sheet 1017 and the third elastic sheet 1026 opposite to each other are mutually extruded.

When the first clamp 101 and the second clamp 102 are closed into a whole, one side face of the first elastic sheet 1017 opposite to the third elastic sheet 1026 is in pressing contact, and the second elastic sheet 1018 is in pressing contact with the second surface 1021 of the second clamp 102, so that the side wall of the cavity 103 is airtight. One side end of each of the first resilient sheet 1017, the second resilient sheet 1018 and the third resilient sheet 1026 is provided with an inclined portion 105, and the inclined portion 105 is used for guiding the short portion 303 of the assembling knife 301 to be in sliding contact, so that the short portion 303 is easily slid into the contact surface of the first resilient sheet 1017 and the third resilient sheet 1026. The short portion 303 contacts with the first resilient tab 1017 and the third resilient tab 1026, so that the long portion 302 of the gang tool 301 is stable and does not deviate, thereby playing a role in positioning, and having benefits and accurate positioning when the long portion 302 of the gang tool 301 transfers the element 5 to the cavity 103.

The two sides of the first clamp 101 and the second clamp 102 are respectively provided with a suction assembly 104, and the suction assembly 104 is communicated with the die cavity 103. Specifically, the getter assembly 104 is in communication with a circular channel 1032 in the mold cavity 103, and the getter assembly 104 can extract the gas in the mold cavity 103, so that the mold cavity 103 is under negative pressure.

In operation, the beam die 2 is loaded into the housing 4, and the open end of the housing 4 faces the die cavity 103. The assembling die 1 is close to the beam die 2 and is attached to the beam die 2, the die cavity 103 is sleeved with the shell 4 at the moment, the shell 4 is accommodated in the circular through groove 1032, and the flaring at the opening of the shell 4 is tightly extruded with the inner wall of the circular through groove 1032, so that the air tightness is achieved.

The press rod 3 transfers the element 5 to the cavity 103. Specifically, the pressing rod 3 and the set standing knife 301 move away from or close to the cavity 103, and the long portion 302 of the set standing knife 301 contacts the element 5 and moves the element 5 into the tapered through groove 1031 at the end of the cavity 103 while the pressing rod 3 moves toward the set standing die 1. The pressing rod 3 is pressed downwards to drive the assembling knife 301 to move, the long part 302 of the assembling knife 301 pushes the element into the die cavity 103 and enables the element to approach one end of the shell 4 along the inner wall of the die cavity 103, and in the process, the seal of the element 5 is in close contact with the inner wall of the die cavity 103, so that the die cavity 103 has air tightness.

When the first clamp 101 and the second clamp 102 are closed into a whole, one side face of the first elastic sheet 1017 opposite to the third elastic sheet 1026 is in pressing contact, and the second elastic sheet 1018 is in pressing contact with the second surface 1021 of the second clamp 102, so that the side wall of the cavity 103 is airtight.

After the first clamp 101 and the second clamp 102 are closed to be an integral, the housing 4 is accommodated in the circular through groove 1032, the element 5 is inserted into the mold cavity 103, the air suction assembly 104 sucks air out of the mold cavity 103, so that the mold cavity 103 is in a negative pressure state, at the moment, the pressing rod 3 is further pressed down to drive the assembling knife 301 to move, the long part 302 of the assembling knife 301 pushes the element into the mold cavity 103 and enables the element to approach one end of the housing 4 along the inner wall of the mold cavity 103 until the element 5 is extruded to a predetermined position of the housing 4, and the housing 4 are pressed into an integral. And then the pressure rod 3 is drawn out of the die cavity 103, the air suction assembly 104 stops air suction, the first clamp 101 and the second clamp 102 are separated, the assembling die 1 moves away from the beam die 2, and the assembling die is reset to wait for the next pressing command. The assembly of the shell 4 and the element 5 under negative pressure is completed.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.

Claims

1. A capacitor assembly apparatus, comprising: the assembling die comprises a group standing die (1), a beam die (2) and a pressure rod (3); the device is characterized in that the group standing die (1) is arranged between the pressure rod (3) and the beam die (2); the assembling die (1) is composed of a first clamp (101) and a second clamp (102) which are oppositely arranged and can be close to and far away from each other; the first clamp (101) and the second clamp (102) are respectively provided with a first arc groove (1012) and a second arc groove (1022); the first arc groove (1012) and the second arc groove (1022) which are oppositely arranged can be combined to form a mold cavity (103) for assembly; the first surface (1011) of the first clamp (101) is provided with a first groove (1015) and a second groove (1016); the second surface (1021) of the second clamp (102) is provided with a third groove (1025); a first elastic sheet (1017) and a second elastic sheet (1018) are respectively arranged in the first groove (1015) and the second groove (1016); the third groove (1025) is provided with a third elastic sheet (1026); when the first clamp (101) and the second clamp (102) are combined oppositely, one side of the first elastic sheet (1017) is in mutual pressing contact with one side of the third elastic sheet (1026); the second elastic sheet (1018) is in pressing contact with the second surface (1021) of the second clamp (102) so that the inner wall of the die cavity (103) is sealed; one side end of each of the first elastic sheet (1017), the second elastic sheet (1018) and the third elastic sheet (1026) is provided with an inclined part (105), and the inclined parts (105) are used for guiding the short parts (303) of the gang knife (301) to be in sliding contact, so that the short parts (303) can easily slide to fall into the contact surfaces of the first elastic sheet (1017) and the third elastic sheet (1026).

2. A capacitor assembly as defined in claim 1, wherein: the one end that depression bar (3) are close to group founding mould (1) be provided with group found sword (301), group found sword (301) including long portion (302) and short portion (303) formation ladder face, long portion (302) be used for the propelling movement to extrude prime (5), short portion (303) and first shell fragment (1017), third shell fragment (1026) sliding contact for the position of location long portion (302) in die cavity (103), group found sword (301) do and keep away from or be close to the action of die cavity (103) for with casing (4) and prime (5) pressfitting in die cavity (103).

3. A capacitor assembly as defined in claim 1, wherein: the first elastic sheet (1017) and the third elastic sheet (1026) are respectively provided with bottom elastic forces far away from the first groove (1015) and the third groove (1025), so that one side faces, opposite to the first elastic sheet (1017) and the third elastic sheet (1026), are mutually extruded.

4. A capacitor assembly as defined in claim 1, wherein: the sizes of the first arc groove (1021) and the second arc groove (1022) are respectively half of the circumference.

5. A capacitor assembly as defined in claim 1, wherein: the die cavity (103) further comprises a tapered through groove (1031) and a circular through groove (1032), the tapered through groove (1031) and the circular through groove (1032) are respectively arranged at two ends of the die cavity (103), the fourth groove (1013) and the sixth groove (1023) are combined to form the tapered through groove (1031), the fifth groove (1014) and the seventh groove (1024) are combined to form the circular through groove (1032), and the inner diameter of the circular through groove (1032) is larger than the inner diameter of the die cavity (103).

6. A capacitor assembly as defined in claim 1, wherein: and two sides of the first clamp (101) and the second clamp (102) are respectively provided with an air suction assembly (104), and the air suction assembly (104) is communicated with the die cavity (103).

7. A capacitor assembly as defined in claim 1, wherein: the assembling die (1) is close to or far from the beam die (2) and is used for sleeving the shell (4) in the beam die (2) in the die cavity (103), and the groove part (201) of the beam die (2) is composed of a plurality of wall parts (202) which can be far from or close to the central point of the groove part (201) and are used for clamping or loosening the shell (4).