CN112908732B - Aluminum electrolytic capacitor assembling machine sealing cam structure and sealing method thereof - Google Patents
Aluminum electrolytic capacitor assembling machine sealing cam structure and sealing method thereof Download PDFInfo
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- CN112908732B CN112908732B CN202110145415.8A CN202110145415A CN112908732B CN 112908732 B CN112908732 B CN 112908732B CN 202110145415 A CN202110145415 A CN 202110145415A CN 112908732 B CN112908732 B CN 112908732B
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- 238000007789 sealing Methods 0.000 title claims abstract description 203
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 103
- 239000003990 capacitor Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 26
- 230000009471 action Effects 0.000 claims abstract description 31
- 230000007704 transition Effects 0.000 claims abstract description 16
- 230000027455 binding Effects 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 15
- 238000005253 cladding Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G13/003—Apparatus or processes for encapsulating capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to the field of capacitors, in particular to an aluminum electrolytic capacitor assembling machine sealing cam structure and a working principle thereof. The invention relates to a high-reliability sealing cam structure of an aluminum electrolytic capacitor assembling machine, which corrects the major track of an original sealing cam. Because the new structural design changes the working time of the girdling cam, the motion trail of the sealing cam is prolonged as shown in fig. 2, and the sealing cam is formed by combining a section B and a section C (namely, the sealing cam is equivalent to a primary sealing arc surface and a secondary sealing arc surface). The primary sealing cambered surface is used for pre-sealing the edge opening of a part of the aluminum shell, then synchronously moves with the girdling cam, finally carries out secondary sealing (secondary sealing is realized by the secondary sealing cambered surface), trims the bare product sealing after the girdling action is changed, and finally carries out E and F section (transition cambered surface and return cambered surface) treatment to enable the bare product sealing to be more perfect.
Description
Technical Field
The invention relates to the field of capacitors, in particular to a sealing cam structure of an aluminum electrolytic capacitor assembling machine and a sealing method thereof.
Background
The aluminum electrolytic capacitor assembling machine has the main function of packaging the impregnated battery core, the rubber plug and the aluminum shell into a complete aluminum capacitor product, and the operation process is generally called a sealing process in the aluminum electrolytic capacitor manufacturing process. In the manufacturing process of lead type and patch type aluminum electrolytic capacitors, the sealing structure in the traditional assembling machine usually adopts two sealing modes: one is a single station series, namely a direct sealing mode; the other is a multi-station series, namely a sealing mode with a pre-chamfering function. The two sealing modes of the traditional assembling machine adopt a one-time sealing cam structure, and have serious structural design defects.
In the sealing process of the conventional assembling machine, two actions of sealing and girdling are generally carried out simultaneously. Because the motion track process of the curled seal 1 is short, the motion track of the corset 2 is long, and the corset deformation acting force is far larger than the acting force of the curled seal deformation, if the seal 1 and the corset 2 act synchronously, the corset cam contacts the outer ring of the rubber cover 4 first, and the rubber cover type position is forced to change and incline. For example, when the gap between the outer diameter of the rubber cover and the inner diameter of the aluminum shell is too large, or the gap between the outer diameter of the core package and the inner diameter of the aluminum shell is too large. In addition, the phenomenon of the rubber cover deflection can occur under the conditions that the thickness of some thin rubber covers is 1.3 mm-1.6 mm or the trimming burrs of the rubber covers are large and the like.
In order to improve the reliability and product quality of the aluminum electrolytic capacitor assembly sealing equipment, it is necessary to solve the technical problems existing in the sealing structure design of the aluminum electrolytic capacitor assembly machine.
Disclosure of Invention
In order to solve the above problems, the invention provides a sealing cam structure of an aluminum electrolytic capacitor assembling machine and a sealing method thereof, which replace the one-time sealing mode of the original assembling machine. The sealing device of the new assembling machine adopts a high-reliability sealing cam structure, so that the qualification rate of the capacitor product after assembling the core cladding, the rubber plug and the aluminum shell due to the use of the high specific volume electrode aluminum foil is not reduced. The invention can not only control the size of the gap between the rubber plug and the aluminum shell in the sealing equipment structure, but also control the gap between the outer diameter of the core package and the inner diameter of the aluminum shell, and realize accurate assembly of the core package, the rubber plug and the aluminum shell in the sealing process of the assembly machine, thereby ensuring that the aluminum electrolytic capacitor product has qualified electrical property.
In order to achieve the purpose, the invention adopts the technical scheme that: a sealing cam structure of an aluminum electrolytic capacitor assembling machine comprises a sealing cam body provided with a shaft hole, wherein the outer side surface of the sealing cam body comprises a sealing critical arc surface, a primary sealing arc surface, a secondary sealing arc surface, a transition arc surface and a return arc surface which are arranged anticlockwise; wherein the sealing critical cambered surface, the primary sealing cambered surface, the secondary sealing cambered surface, the transition cambered surface and the return cambered surface form the outer side surface of the continuous sealing cam body; wherein the distance from the return arc surface, the sealing critical arc surface, the transition arc surface, the primary sealing arc surface and the secondary sealing arc surface to the shaft hole is gradually increased.
The invention also provides a sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure, which comprises the following steps:
step 1: placing the aluminum shell provided with the core cladding and the rubber cover into a beam mold, clamping the aluminum shell by a clamping end of the beam mold, clamping the capacitor aluminum shell to be sealed after the beam mold is tightened, and rotating the capacitor aluminum shell under the action of a first driving unit;
step 2: the lateral sealing cam body moves to the capacitor aluminum shell through the second driving unit and rotates through the third driving unit, wherein the sealing critical cambered surface of the sealing cam body is positioned above the capacitor aluminum shell;
and step 3: the sealing cam body continues to rotate and carries out curling action on the edge of the aluminum shell through the primary sealing cambered surface to finish primary curling and sealing;
step 4: when the primary sealing arc surface of the sealing cam body carries out curling action and the secondary sealing arc surface does not carry out curling action, the girdling wheel extrudes the capacitor aluminum shell towards the center direction of the capacitor aluminum shell and realizes girdling action;
and 5: after the waist binding wheel finishes the waist binding action, the waist binding wheel is far away from the aluminum shell of the capacitor, meanwhile, the sealing cam body continues to rotate, and the edge of the aluminum shell is curled again through the secondary sealing arc surface, so that secondary curling sealing is finished;
step 6: the sealing cam body continues to rotate, and the transition cambered surface and the return cambered surface rotate to the original positions.
Further, the specific process of step 3 is: the sealing cam body continues to rotate and carries out edge curling action on the edge of the aluminum shell through the primarily sealed arc surface, and the edge of the aluminum shell is embedded into the rubber cover and forms a surface limiting edge on the plane of the rubber cover opening of the capacitor.
Further, the specific process of step 5 is: after the waist binding wheel finishes the waist binding action, the waist binding wheel is away from the capacitor aluminum shell, meanwhile, the sealing cam body continues to rotate, and the secondary edge-curling action is performed on the edge of the limiting surface through the secondary sealing arc surface, so that the secondary edge-curling sealing is finished.
Further, in the step 1, the rubber cover, the core cladding and the aluminum shell are coaxially placed.
Furthermore, the third driving unit comprises a servo motor, a connecting rod connected to the movable end of the servo motor, a first fixed seat arranged at one end of the connecting rod, a second fixed seat arranged on the first fixed seat, and a sealing cam body arranged at the axis position of the second fixed seat in a protruding manner; the central axis of connecting rod, first fixing base, second fixing base and the shaft hole that seals the cam body are on same straight line.
The invention has the beneficial effects that:
1. the invention relates to a high-reliability sealing cam structure of an aluminum electrolytic capacitor assembling machine, which corrects the major track of an original sealing cam. Because the new structural design changes the working time of the girdling cam, the motion trail of the sealing cam is prolonged as shown in fig. 2, and the sealing cam is formed by combining a section B and a section C (namely, the sealing cam is equivalent to a primary sealing arc surface and a secondary sealing arc surface). The primary sealing cambered surface is used for pre-sealing the edge opening of a part of the aluminum shell, then synchronously moves with the girdling cam, finally carries out secondary sealing (secondary sealing is realized by the secondary sealing cambered surface), trims the bare product sealing after the girdling action is changed, and finally carries out E and F section (transition cambered surface and return cambered surface) treatment to enable the bare product sealing to be more perfect.
2. The high-reliability sealing cam structure disclosed by the invention is characterized in that the following important designs are made on the motion track of the traditional one-time sealing cam: (1) the integral working graduation of the original deformation action track is lengthened; (2) the seal is subjected to major correction design aiming at the deformation acting force of the upper edge of the aluminum shell. Because the movement compression track prior to the deformation acting force of the girdling wheel exists in the previous stage, namely the movement track of the girdling wheel moves to the front of the rubber cover, the sealing cam forces the upper edge of the aluminum shell to deform and partially embed the rubber plug, the plane of the opening of the rubber cover is ensured to be coaxial and vertical to the core cladding and the aluminum shell, and the rubber cover is ensured to be stable and keep the molding position unchanged under the action of the subsequent deformation force of the girdling action; (3) at the end of the motion track of the sealing cam, the stability of the sealing position and the uniformity of the height and the size of the core package are instantly ensured, the high-precision requirement of the mounting plate of the aluminum electrolytic capacitor product (such as SMD product) is ensured, and the product elevation error is generally controlled within +/-0.02 mm. The reliability of the sealing equipment of the aluminum electrolytic capacitor assembling machine is greatly improved, and the qualification rate of the electrical property of the product is ensured.
Drawings
Fig. 1 is a schematic view of a closure cam structure.
Fig. 2 is a schematic view of the capacitor after the first sealing process.
Fig. 3 is a schematic diagram of the capacitor after the girdling process and the secondary sealing.
The reference numbers illustrate: 1. limiting the surface; 2. girdling; 3. the sealing device comprises an aluminum shell, 4 parts of a rubber cover, 5 parts of a core cladding, 6 parts of a sealing cam body, 61 parts of a sealing critical cambered surface, 62 parts of a primary sealing cambered surface, 63 parts of a secondary sealing cambered surface, 64 parts of a transition cambered surface, 65 parts of a return cambered surface and 66 parts of a shaft hole.
Detailed Description
Referring to fig. 1-3, the present invention relates to a sealing cam structure of an aluminum electrolytic capacitor assembling machine, which includes a sealing cam body 6 having a shaft hole 66, wherein an outer side surface of the sealing cam body 6 includes a sealing critical arc surface 61, a primary sealing arc surface 62, a secondary sealing arc surface 63, a transition arc surface 64, and a return arc surface 65 which are arranged counterclockwise; wherein the sealing critical cambered surface 61, the primary sealing cambered surface 62, the secondary sealing cambered surface 63, the transition cambered surface 64 and the return cambered surface 65 form the outer side surface of the continuous sealing cam body 6; the distances from the return arc surface 65, the sealing critical arc surface 61, the transition arc surface 64, the primary sealing arc surface 62 and the secondary sealing arc surface 63 to the shaft hole 66 are gradually increased.
The invention also provides a sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure, which comprises the following steps:
step 1: placing the aluminum shell 3 provided with the core cladding 5 and the rubber cover 4 into a beam mold, clamping the aluminum shell 3 by a clamping end of the beam mold, clamping the capacitor aluminum shell 3 to be sealed after the beam mold is tightened, and rotating the capacitor aluminum shell 3 under the action of a first driving unit;
step 2: the lateral sealing cam body 6 moves to the capacitor aluminum shell 3 through the second driving unit, and the sealing cam body 6 rotates through the third driving unit, wherein the sealing critical cambered surface 61 of the sealing cam body 6 is positioned above the capacitor aluminum shell 3;
and step 3: the sealing cam body 6 continues to rotate and carries out edge curling action on the edge of the aluminum shell 3 through the primary sealing cambered surface 62, so that primary edge curling and sealing are completed;
step 4: when the primary sealing arc surface 62 of the sealing cam body 6 carries out curling action and the secondary sealing arc surface 63 does not carry out curling action, the beam waist wheel extrudes the capacitor aluminum shell 3 towards the center direction of the capacitor aluminum shell 3 and realizes beam waist 2 action;
and 5: after the waist binding wheel finishes the action of binding the waist 2, the waist is far away from the capacitor aluminum shell 3, meanwhile, the sealing cam body 6 continues to rotate, and the edge of the aluminum shell 3 is curled again through the secondary sealing cambered surface 63 to finish secondary curling sealing;
step 6: the sealing cam body 6 continues to rotate, and the transition arc surface 64 and the return arc surface 65 both rotate to the original positions.
Further, the specific process of step 3 is: the sealing cam body 6 continues to rotate and carries out edge curling action on the edge of the aluminum shell 3 through the primary sealing arc surface 62, and the edge of the aluminum shell 3 is embedded into the rubber cover 4 to form a limiting surface edge 1 on the plane of the opening of the rubber cover 4 of the capacitor.
Further, the specific process of step 5 is: after the waist binding wheel finishes the action of binding the waist 2, the waist is far away from the capacitor aluminum shell 3, meanwhile, the sealing cam body 6 continues to rotate, and the secondary edge-rolling sealing is finished by performing the edge-rolling action on the limiting surface edge 1 again through the secondary sealing arc surface 63.
Further, in step 1, the rubber cover 4, the core pack 5 and the aluminum shell 3 are all coaxially placed.
Further, the third driving unit comprises a servo motor, a connecting rod connected to the movable end of the servo motor, a first fixed seat arranged at one end of the connecting rod, a second fixed seat arranged on the first fixed seat, and a sealing cam body 6 arranged at the axis position of the second fixed seat in a protruding manner; the central axis of connecting rod, first fixing base, second fixing base and the shaft hole 66 of the cam body 6 that seals are on same straight line.
The new assemblage machine sealing equipment adopts the high-reliability sealing cam structure of the application, so that the qualification rate of the capacitor product after assemblage assembly of the core cladding 5, the rubber plug and the aluminum shell 3 due to the use of the high specific volume electrode aluminum foil is not reduced. The invention can not only control the size of the gap between the rubber plug and the aluminum shell 3 in the structure of the sealing device, but also control the gap between the outer diameter of the core package 5 and the inner diameter of the aluminum shell 3, and realize the precise assembly of the core package 5, the rubber plug and the aluminum shell 3 in the sealing process of the assembly machine, thereby ensuring that the aluminum electrolytic capacitor product has qualified electrical property.
The invention relates to a high-reliability sealing cam structure of an aluminum electrolytic capacitor assembling machine, which corrects the major track of an original sealing cam. Because the new structural design changes the working time of the girdling cam, as the motion trail of the sealing cam in fig. 2 is prolonged, the sealing cam is formed by combining a section B and a section C (namely, the sealing cam is equivalent to the primary sealing arc surface 62 and the secondary sealing arc surface 63). The primary sealing arc surface 62 pre-seals the edge opening of the aluminum shell 3, then moves synchronously with the girdling cam, finally performs secondary sealing (secondary sealing is realized by the secondary sealing arc surface 63), trims the bare product sealing after the movement deformation of the girdling 2, and finally performs E and F section (transition arc surface 64 and return arc surface 65) treatment to enable the bare product sealing to be more perfect.
The high-reliability sealing cam structure disclosed by the invention is characterized in that the following important designs are made on the motion track of the traditional one-time sealing cam: (1) the integral working graduation of the original deformation action track is lengthened; (2) the seal is designed to make major correction to the deformation acting force of the upper edge of the aluminum shell 3. Because the motion compression track prior to the deformation acting force of the girdling wheel exists in the previous stage, namely the motion track of the girdling wheel moves to the front of the rubber cover 4, the sealing cam forces the upper edge of the aluminum shell 3 to deform and partially embed into the rubber plug, the plane of the opening of the rubber cover 4 is ensured to be coaxial and vertical to the core cladding 5 and the aluminum shell 3, and the rubber cover 4 is ensured to be stable and keep the molding position unchanged under the action of the subsequent movement deformation force of the girdling wheel 2; (3) at the end of the motion track of the sealing cam, the stability of the sealing position and the uniformity of the height dimension of the core package 5 are instantly ensured, the high-precision requirement of the mounting plate of the aluminum electrolytic capacitor product (such as SMD product) is ensured, and the product elevation error is generally controlled within +/-0.02 mm. The reliability of the sealing equipment of the aluminum electrolytic capacitor assembling machine is greatly improved, and the qualification rate of the electrical property of the product is ensured.
Wherein, the impregnated core bag 5, the glue cover 4 and the aluminum shell 3 are sent to an assembling machine for assembling and packaging. Firstly, 80% of acting force is applied to the movement of embedding the aluminum shell 3 into the rubber cover 4 by the hemming and sealing cam, namely, in the sealing process of the assembling machine, the sealing cam body 6 is firstly made to deform the edge of the aluminum shell 3 (see section B of the cam movement track in figure 1) and form a limiting edge 1 on the opening plane of the capacitor rubber cover 4, as shown in figure 2, namely, the aluminum shell 3 is firstly embedded into the rubber cover 4, so that the acting force of the subsequent waist binding wheel is properly controlled, and the phenomenon of the rubber cover 4 being skewed is avoided. And then, starting the motion of the waist binding wheel, and after the motion track of the waist binding wheel is finished, applying the residual 20 percent acting force of the sealing cam to the plane of the rubber cover 4 again to enable the rubber cover 4, the core cladding 5 and the aluminum shell 3 to move coaxially and parallelly so as to ensure that the capacitor has the standard position size after sealing.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.
Claims (6)
1. An aluminum electrolytic capacitor assemblage machine seal cam structure which characterized in that: the sealing cam comprises a sealing cam body provided with a shaft hole, wherein the outer side surface of the sealing cam body comprises a sealing critical cambered surface, a primary sealing cambered surface, a secondary sealing cambered surface, a transition cambered surface and a return cambered surface which are arranged anticlockwise; wherein the sealing critical cambered surface, the primary sealing cambered surface, the secondary sealing cambered surface, the transition cambered surface and the return cambered surface form the outer side surface of the continuous sealing cam body; wherein the distance from the return arc surface, the sealing critical arc surface, the transition arc surface, the primary sealing arc surface and the secondary sealing arc surface to the shaft hole is gradually increased.
2. A sealing method for a sealing cam structure of an aluminum electrolytic capacitor assembly machine according to claim 1, characterized by comprising the steps of:
step 1: placing the aluminum shell provided with the core cladding 5 and the rubber cover 4 into a beam mold, clamping the aluminum shell by a clamping end of the beam mold, clamping the capacitor aluminum shell to be sealed after the beam mold is tightened, and rotating the capacitor aluminum shell under the action of a first driving unit;
step 2: the lateral sealing cam body moves to the capacitor aluminum shell through the second driving unit and rotates through the third driving unit, wherein the sealing critical cambered surface of the sealing cam body is positioned above the capacitor aluminum shell;
and step 3: the sealing cam body continues to rotate and carries out curling action on the edge of the aluminum shell through the primary sealing cambered surface to finish primary curling and sealing;
step 4: when the primary sealing arc surface of the sealing cam body carries out curling action and the secondary sealing arc surface does not carry out curling action, the girdling wheel extrudes the capacitor aluminum shell towards the center direction of the capacitor aluminum shell and realizes girdling action;
and 5: after the waist binding wheel finishes the waist binding action, the waist binding wheel is far away from the aluminum shell of the capacitor, meanwhile, the sealing cam body continues to rotate, and the edge of the aluminum shell is curled again through the secondary sealing arc surface, so that secondary curling sealing is finished;
step 6: the sealing cam body continues to rotate, and the transition cambered surface and the return cambered surface rotate to the original positions.
3. The sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure according to claim 2, characterized in that: the specific process of the step 3 is as follows: the sealing cam body continues to rotate and carries out edge curling action on the edge of the aluminum shell through the primarily sealed arc surface, and the edge of the aluminum shell is embedded into the rubber cover and forms a surface limiting edge on the plane of the rubber cover opening of the capacitor.
4. The sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure according to claim 3, characterized in that: the specific process of the step 5 is as follows: after the waist binding wheel finishes the waist binding action, the waist binding wheel is away from the capacitor aluminum shell, meanwhile, the sealing cam body continues to rotate, and the secondary edge-curling action is performed on the edge of the limiting surface through the secondary sealing arc surface, so that the secondary edge-curling sealing is finished.
5. The sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure according to claim 2, characterized in that: in step 1, the rubber cover, the core cladding and the aluminum shell are all coaxially placed.
6. The sealing method of the aluminum electrolytic capacitor assembling machine sealing cam structure according to claim 2, characterized in that: the third driving unit comprises a servo motor, a connecting rod connected to the movable end of the servo motor, a first fixed seat arranged at one end of the connecting rod, a second fixed seat arranged on the first fixed seat, and a sealing cam body arranged at the axis position of the second fixed seat in a protruding manner; the central axis of connecting rod, first fixing base, second fixing base and the shaft hole that seals the cam body are on same straight line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110145415.8A CN112908732B (en) | 2021-02-02 | 2021-02-02 | Aluminum electrolytic capacitor assembling machine sealing cam structure and sealing method thereof |
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| CN202110145415.8A CN112908732B (en) | 2021-02-02 | 2021-02-02 | Aluminum electrolytic capacitor assembling machine sealing cam structure and sealing method thereof |
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| CN112908732B true CN112908732B (en) | 2021-11-09 |
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| CN112908732A (en) | 2021-06-04 |
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