A capacitor assembly device

Abstract

The present invention relates to a capacitor assembly device, comprising: an assembly mold, a bundle mold, and a pressure rod; the characteristic is that the assembly mold is arranged between the pressure rod and the bundle mold; the assembly mold consists of a first clamp and a second clamp which are arranged opposite to each other and can approach and move 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 mold 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; the first groove and the second groove are respectively provided with a first spring piece and a second spring piece; the third groove is provided with a third spring piece; the first spring piece and the third spring piece are pressed and contacted with each other; the second spring piece is pressed and contacted with the second surface of the second clamp to seal the inner wall of the mold cavity, thereby solving the technical problem that negative pressure leaks after the assembly mold is slightly opened, thereby affecting the airtightness of the negative pressure assembly of the shell and the element, realizing negative pressure assembly and improving the service life of the product.

Description

Technical Field

[0001] The invention belongs to the field of capacitor manufacturing, in particular to a capacitor assembly device. Background Art

[0002] Capacitors are a common electronic component used in electronic devices and are essential components of circuits. Capacitors generate heat during operation. Capacitors assembled at normal pressure generate gas during operation, increasing internal pressure and potentially causing the capacitor to rupture, shortening its lifespan. Capacitors assembled at negative pressure, however, do not generate gas and can extend their lifespan. Traditional capacitors are assembled and packaged under normal pressure. Alternatively, insufficient airtightness during negative pressure packaging can result in the internal pressure of the resulting capacitor remaining at normal pressure. Traditional assembly and packaging equipment often leaks negative pressure or performs assembly and packaging directly in an exposed environment at normal pressure. This makes them susceptible to environmental influences and cannot prevent air and dust from entering the element core. Furthermore, the capacitor cannot achieve a negative pressure internal state after assembly. Summary of the Invention

[0003] Based on this, it is necessary to provide a capacitor assembly device to solve the technical problem in the prior art that the negative pressure leaks out after the assembly mold is slightly opened, thereby affecting the airtightness of the negative pressure assembly between the shell and the element.

[0004] The present invention solves the technical problem by adopting the following technical solutions:

[0005] A capacitor assembly device comprises: an assembly mold, a beam mold, and a pressure rod; the assembly mold is arranged between the pressure rod and the beam mold; the assembly mold comprises a first fixture and a second fixture disposed opposite each other and capable of moving toward and away from each other; the first fixture and the second fixture are respectively provided with a first arc groove and a second arc groove; the first arc groove and the second arc groove, which are disposed opposite each other, can be combined to form a mold cavity for assembly; the first surface of the first fixture is provided with a first groove and a second groove; the second surface of the second fixture is provided with a third groove; the first groove and the second groove are respectively provided with a first spring piece and a second spring piece; the third groove is provided with a third spring piece; when the first fixture and the second fixture are combined, one side of the first spring piece and one side of the third spring piece are pressed into contact with each other; the second spring piece and the second surface of the second fixture are pressed into contact, thereby sealing the inner wall of the mold cavity; one end of each of the first spring piece, the second spring piece, and the third spring piece is provided with an inclined portion, the inclined portion being used to guide the short portion of the assembly knife to slide into contact, so that the short portion can easily slide into the contact surface of the first and third spring pieces.

[0006] Furthermore, the assembly knife is provided at one end of the pressure rod close to the assembly mold, and the assembly knife includes a long part and a short part to form a stepped surface. The long part is used to push the extruded element, and the short part is in sliding contact with the first spring piece and the third spring piece to position the long part in the mold cavity. The assembly knife moves away from or close to the mold cavity to press the shell and the element together in the mold cavity.

[0007] Furthermore, the first elastic piece and the third elastic piece respectively have elastic forces away from the bottom of the first groove and the third groove, so that the opposite sides of the first elastic piece and the third elastic piece are pressed against each other.

[0008] Furthermore, the sizes of the first arc groove and the second arc groove are respectively half of a circumference.

[0009] Furthermore, the mold cavity also includes a conical through groove and a circular through groove, and the conical through groove and the circular through groove are respectively arranged at the two ends of the mold cavity. The fourth groove and the sixth groove are combined to form the conical through groove, and the fifth groove and the seventh groove are combined to form the circular through groove. The inner diameter of the circular through groove is larger than the inner diameter of the mold cavity.

[0010] Furthermore, suction components are respectively provided on both sides of the first clamp and the second clamp, and the suction components are connected to the mold cavity.

[0011] Furthermore, the assembly mold moves closer to or away from the beam mold to fit the shell in the beam mold into the mold cavity. The beam mold groove is composed of a plurality of wall portions, and the wall portions can move away from or close to the center point of the groove portion to clamp or release the shell.

[0012] The advantages and positive effects of the present invention are:

[0013] The present invention provides a capacitor assembly device to address the prior art problem of negative pressure leakage caused by a slight opening of the assembly mold, thereby affecting the airtight seal between the housing and the element during negative pressure assembly. Compared with the prior art, the present invention has the following advantages:

[0014] 1. The present invention provides a spring sheet on the assembly mold to seal the assembly mold, preventing the assembly mold from slightly opening and leaking negative pressure when the assembly knife is pressed down, thereby realizing negative pressure assembly packaging and improving product performance.

[0015] 2. By applying negative pressure in the assembly mold, the capacitor is inserted into the housing. The negative pressure draws the electrolyte from the housing to the capacitor, allowing the capacitor to absorb the electrolyte more fully, resulting in more stable performance and a longer life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the expanded three-dimensional structure of the assembly mold of the present invention.

[0018] Figure 3 It is a schematic diagram of the second clamp, housing and element structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the first clamp structure of the present invention.

[0020] Figure 5 It is a schematic diagram of the second clamp structure of the present invention.

[0021] Figure 6 It is a schematic diagram of the assembly mold structure before the assembly knife of the present invention is pressed down.

[0022] Figure 7 It is a schematic diagram of the assembly mold structure after the assembly knife of the present invention is pressed down.

[0023] Figure 8 It is a schematic diagram of the distribution structure of the spring pieces in the assembly mold of the present invention.

[0024] Figure 9 It is a schematic diagram of the second clamp and the assembled knife structure of the present invention.

[0025] Figure 10 It is a schematic diagram of the mold cavity position of the assembly mold of the present invention.

[0026] Explanation of the accompanying numbers: 1. Assembly mold; 2. Beam mold; 3. Pressure rod; 4. Shell; 5. Element; 101. First clamp; 102. Second clamp; 103. Mold cavity; 104. Suction assembly; 105. Oblique portion; 201. Groove portion; 202. Wall portion; 301. Assembly knife; 302. Long portion; 303. Short portion; 1011. First surface; 1012. First arc groove; 1013. Fourth groove; 1014. Fifth groove; 1015. First groove; 1016. Second groove; 1017. First spring piece; 1018. Second spring piece; 1021. Second surface; 1022. Second arc groove; 1023. Sixth groove; 1024. Seventh groove; 1025. Third groove; 1026. Third spring piece; 1031. Conical through groove; 1032. Circular through groove. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are further described in 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variations thereof all mean "at least include". In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrally formed connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] like Figures 1-10As shown, a capacitor assembly device according to the present invention comprises: an assembly mold 1, a beam mold 2, and a pressure rod 3; characterized in that the assembly mold 1 is arranged between the pressure rod 3 and the beam mold 2; the assembly mold 1 is composed of a first clamp 101 and a second clamp 102 which are arranged opposite to each other and can move closer to and 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 arranged opposite to each other 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; the first spring piece 1017 and the second spring piece 1018 are respectively provided in the first groove 1015 and the second groove 1016; the third spring piece 1026 is provided in the third groove 1025; when the first clamp 101 and the second clamp 102 are merged toward each other, one side of the first spring piece 1017 and one side of the third spring piece 1026 are squeezed and contacted with each other; the second spring piece 1018 is squeezed and contacted with the second surface 1021 of the second clamp 102 so that the inner wall of the mold cavity 103 is sealed.

[0031] Combine Figures 1 to 10 In some embodiments, a capacitor assembly device includes an assembly mold 1, a beam mold 2, and a pressure rod 3. The assembly mold 1 is used to press the shell 4 and element 5 together within a mold cavity 103, so that the element 5 is inserted into the inner cavity of the shell 4 and pressed together with the shell 4 under negative pressure. The pressure rod 3 is used to simultaneously feed the element 5 into the assembly mold 1 and move toward the assembly mold 1, causing the assembly blade 301 to press the element 5 toward the shell 4 and into a predetermined position within the shell 4. The beam mold 2 is used to load the shell 4 and can be attached to the opposite end of the assembly mold 1. During operation, the beam mold 2 can move toward or away from the axis of the mold cavity 103 of the assembly mold 1 in a direction perpendicular to the axis of the mold cavity 103. The suction components 104 on both sides of the assembly mold 1 are used to suction air into the mold cavity 103, creating a negative pressure state in the mold cavity 103 and enabling the assembly of the shell 4 and element 5 under negative pressure. The invention solves the technical problem in the prior art that a slight opening of the assembly mold causes leakage of negative pressure, thereby affecting the airtightness of the negative pressure assembly between the shell and the element.

[0032] More specifically, the housing 4 is an aluminum shell, i.e., a cylindrical cup-shaped body cast or stamped from aluminum. The element 5 is cylindrical in shape, with the outer diameter of the element 5 at the sealed end being larger than the inner diameter of the housing 4. The element 5 is formed into a cylindrical shape by combining aluminum foil, guide pins, and electrolytic paper.

[0033] In some embodiments, the assembly mold 1 can be driven by other devices so that the bottom end of the assembly mold 1 is close to or away from the beam mold 2. This allows the assembly mold 1 and the beam mold 2 to complete the action of being connected or separated. Specifically, the assembly mold 1 is composed of a first clamp 101 and a second clamp 102 that are arranged opposite to each other and can be close to or away from each other; the first clamp 101 and the second clamp 102 have the same structure and are symmetrical in space. 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 that are arranged opposite to each other 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; the first spring piece 1017 and the second spring piece 1018 are respectively provided in the first groove 1015 and the second groove 1016; the third groove 1025 is provided with a third spring piece 1026; when the first clamp 101 and the second clamp 102 are merged toward each other, one side of the first spring piece 1017 and one side of the third spring piece 1026 are squeezed and contacted with each other; the second spring piece 1018 is squeezed and contacted with the second surface 1021 of the second clamp 102 so that the inner wall of the mold cavity 103 is sealed.

[0034] The first fixture 101 and the second fixture 102 are respectively provided with a first arc groove 1012 and a second arc groove 1022. Specifically, the first arc 1021 and the second arc groove 1022 are each half the circumference. The radius of the first arc groove 1012 and the second arc groove 1022 are the same, and there is no specific limitation on the radius. In practice, the radius is smaller than the outer diameter of the element 5 at the sealing point, specifically controlled to be 0.15-0.25mm. After the first and second surfaces 1011, 1021 of the first and second fixtures 101, 102 are brought into close contact with each other, the first fixture 101 and the second fixture 102 are combined to form the mold 1, and the first arc groove 1012 and the second arc groove 1022 form the mold cavity 103.

[0035] In some embodiments, the mold cavity 103 also includes a conical through groove 1031 and a circular through groove 1032. The conical through groove 1031 and the circular through groove 1032 are respectively arranged at the two ends of the mold cavity 103. The fourth groove 1013 and the sixth groove 1023 are merged to form the conical through groove 1031. The fifth groove 1014 and the seventh groove 1024 are merged to form the circular through groove 1032. The inner diameter of the circular through groove 1032 is larger than the inner diameter of the mold cavity 103.

[0036] When the first clamp 101 and the second clamp 102 are combined to form a mold cavity 103, this mold cavity 103 provides space for assembling the shell 4 and the element 5. An assembly knife 301 is provided at the end of the pressure rod 3 near the assembly mold 1. The assembly knife 301 comprises a long portion 302 and a short portion 303 forming a stepped surface. The long portion 302 is used to push and squeeze the element 5, while the short portion 303 slides in contact with the first spring 1017 and the third spring 1026 to position the long portion 302 within the mold cavity 103. The assembly knife 301 moves away from or toward the mold cavity 103 to press the shell 4 and the element 5 together within the mold cavity 103.

[0037] The assembly mold 1 moves toward or away from the beam mold 2 to fit the shell 4 in the beam mold 2 into the mold cavity 103. The groove 201 of the beam mold 2 is composed of a plurality of wall portions 202, which can move away from or toward the center point of the groove 201 to clamp or release the shell 4.

[0038] During the assembly process, the pressing rod 3 first transfers the element 5 to the mold cavity 103. Specifically, the pressing rod 3 and the assembly knife 301 move away from or toward the mold cavity 103. As the pressing rod 3 approaches the assembly mold 1, the long portion 302 of the assembly knife 301 contacts the element 5 and transfers the element 5 into the tapered groove 1031 at the end of the mold cavity 103. The tapered groove 1031 guides the element 5, making it easier to insert the element 5 into the mold cavity 103. In some embodiments, the outer diameter of the sealing portion of the element 5 is larger than the inner diameter of the mold cavity 103, and the sealing portion of the element 5 is elastic. During assembly, the pressure rod 3 is pressed down, driving the assembly knife 301 to move. The long part 302 of the assembly knife 301 pushes the element into the mold cavity 103 and makes the element approach one end of the shell 4 along the inner wall of the mold cavity 103. During this process, the seal of the element 5 is in close contact with the inner wall of the mold cavity 103, making the mold cavity 103 airtight.

[0039] The inner diameter of the circular through-slot 1032 at the other end of the mold cavity 103, away from the tapered through-slot 1031, is larger than the inner diameter of the mold cavity 103. Specifically, the circular through-slot 1032 is used to receive the housing 4. More specifically, the hollow end of the housing 4 has an opening, and the open end has a flared opening. The outer diameter of the flared opening is slightly larger than the inner diameter of the circular through-slot 1032. The flared end of the housing 4 faces the element 5. When the housing 4 is inserted into the circular through-slot 1032, the flared opening of the housing 4 contacts the interior of the circular through-slot 1032, ensuring an airtight seal between the housing 4 and the circular through-slot 1032.

[0040] In some embodiments, the first fixture 101 and the second fixture 102 are respectively provided with a spring piece 1017, a second spring piece 1018, and a third spring piece 1026. Specifically, the first surface 1011 of the first fixture 101 is provided with a first groove 1015 and a second groove 1016; the second surface 1021 of the second fixture 102 is provided with a third groove 1025; the first groove 1015 and the second groove 1016 are respectively provided with the first spring piece 1017 and the second spring piece 1018; and the third groove 1025 is provided with the third spring piece 1026. The first spring piece 1017 and the third spring piece 1026 have elastic forces away from the bottoms of the first groove 1015 and the third groove 1025, respectively, so that the opposing sides of the first spring piece 1017 and the third spring piece 1026 are pressed against each other.

[0041] When the first and second clamps 101 and 102 are brought together, the first and third spring plates 1017 and 1026 engage with each other on opposing sides, while the second spring plate 1018 engages with the second surface 1021 of the second clamp 102, ensuring airtightness on the sidewalls of the mold cavity 103. Each of the first, second, and third spring plates 1017, 1018, and 1026 has a beveled portion 105 at its end. These bevels 105 guide the short portion 303 of the assembly blade 301 in sliding contact, allowing it to easily slide onto the contact surface between the first and third spring plates 1017, 1026. The contact between the short portion 303 and the first and third spring plates 1017, 1026 stabilizes the long portion 302 of the assembly blade 301 and prevents it from shifting, effectively positioning it and ensuring precise positioning when transferring the element 5 from the long portion 302 of the assembly blade 301 to the mold cavity 103.

[0042] Air suction components 104 are provided on both sides of the first fixture 101 and the second fixture 102, respectively. The air suction components 104 are connected to the mold cavity 103. Specifically, the air suction components 104 are connected to the circular groove 1032 in the mold cavity 103. The air suction components 104 can extract gas from the mold cavity 103, so that the mold cavity 103 forms a negative pressure state.

[0043] During operation, the beam mold 2 is inserted into the housing 4, with the open end of the housing 4 facing the mold cavity 103. The assembly mold 1 is brought close to the beam mold 2 and fits snugly against it. The mold cavity 103 is then sheathed onto the housing 4, which is then accommodated within the circular groove 1032. The flared opening of the housing 4 presses tightly against the inner wall of the circular groove 1032, ensuring an airtight seal.

[0044] The pressure rod 3 transfers the element 5 to the mold cavity 103. Specifically, the pressure rod 3 and the assembly knife 301 move away from or toward the mold cavity 103. As the pressure rod 3 approaches the assembly mold 1, the long portion 302 of the assembly knife 301 contacts the element 5 and transfers the element 5 into the tapered groove 1031 at the end of the mold cavity 103. The pressure rod 3 presses downward, driving the assembly knife 301 to move. The long portion 302 of the assembly knife 301 pushes the element into the mold cavity 103 and makes it move along the inner wall of the mold cavity 103 toward the end of the shell 4. During this process, the sealed end of the element 5 is in close contact with the inner wall of the mold cavity 103, making the mold cavity 103 airtight.

[0045] When the first clamp 101 and the second clamp 102 are brought together to form a whole, the first spring piece 1017 and the opposite side of the third spring piece 1026 are squeezed into contact, and the second spring piece 1018 is squeezed into contact with the second surface 1021 of the second clamp 102, so that the side wall of the mold cavity 103 is airtight.

[0046] After the first and second clamps 101, 102 are brought together and integrated, the shell 4 is placed in the circular groove 1032. After the element 5 is inserted into the mold cavity 103, the suction assembly 104 evacuates the air from the mold cavity 103, creating a negative pressure state within the mold cavity 103. At this point, the pressure rod 3 is further pressed downward, driving the assembly knife 301 to move. The long portion 302 of the assembly knife 301 pushes the element into the mold cavity 103 and forces it along the inner wall of the mold cavity 103 toward one end of the shell 4 until the element 5 is squeezed to the predetermined position on the shell 4, pressing the shell 4 and the element 5 together. The pressure rod 3 is then withdrawn from the mold cavity 103, the suction assembly 104 stops suctioning, the first and second clamps 101, 102 separate, and the assembly mold 1 moves away from the beam mold 2, resetting and awaiting the next pressing command. This completes the negative pressure assembly of the shell 4 and element 5.

[0047] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation methods. Any other implementation methods derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A capacitor assembly device comprising: An assembly mold (1), a beam mold (2), and a pressure rod (3); characterized in that the assembly mold (1) is arranged between the pressure rod (3) and the beam mold (2); the assembly mold (1) is composed of a first clamp (101) and a second clamp (102) which are arranged opposite to each other and can move closer to and farther 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 arranged opposite to each other 2) merging to form a mold cavity (103) for assembly; the first surface (1011) of the first fixture (101) is provided with a first groove (1015) and a second groove (1016); the second surface (1021) of the second fixture (102) is provided with a third groove (1025); the first groove (1015) and the second groove (1016) are respectively provided with a first elastic piece (1017) and a second elastic piece (1018); the third groove (1025) is provided with a third elastic piece The first spring piece (1017) and the second spring piece (1026) are respectively provided with an inclined portion (105) at one end thereof, and the inclined portion (105) is provided at one end thereof. The portion (105) is used to guide the short portion (303) of the assembly knife (301) to slide in contact, so that the short portion (303) can easily slide and fall into the contact surface of the first spring piece (1017) and the third spring piece (1026); the first clamp (101) and the second clamp (102) are respectively provided with suction components (104), and the suction components (104) are connected to the mold cavity (103); the suction components (104) can extract the gas in the mold cavity (103), so that the mold cavity (103) forms a negative pressure state.

2. The capacitor assembly device according to claim 1, characterized in that: The assembly knife (301) is provided at one end of the pressure rod (3) close to the assembly mold (1). The assembly knife (301) includes a long portion (302) and a short portion (303) to form a stepped surface. The long portion (302) is used to push and extrude the element (5). The short portion (303) is in sliding contact with the first spring piece (1017) and the third spring piece (1026) to locate the position of the long portion (302) in the mold cavity (103). The assembly knife (301) moves away from or close to the mold cavity (103) to press the shell (4) and the element (5) together in the mold cavity (103).

3. The capacitor assembly device according to claim 1, characterized in that: The first elastic piece (1017) and the third elastic piece (1026) respectively have elastic forces away from the bottom of the first groove (1015) and the third groove (1025), so that the opposite sides of the first elastic piece (1017) and the third elastic piece (1026) are pressed against each other.

4. The capacitor assembly device according to claim 1, characterized in that: The first arc groove (1012) and the second arc groove (1022) are each half the size of a circle.

5. The capacitor assembly device according to claim 1, characterized in that: The mold cavity (103) further comprises a tapered through groove (1031) and a circular through groove (1032), wherein the tapered through groove (1031) and the circular through groove (1032) are respectively arranged at the two ends of the mold 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 greater than the inner diameter of the mold cavity (103).

6. The capacitor assembly device according to claim 1, characterized in that: The assembly mold (1) moves toward or away from the beam mold (2) to fit the shell (4) in the beam mold (2) into the mold cavity (103). The groove (201) of the beam mold (2) is composed of a plurality of wall portions (202). The wall portions can move away from or toward the center point of the groove (201) to clamp or release the shell (4).

Images