CN108511194B - Capacitor guide pin and manufacturing method thereof - Google Patents
Capacitor guide pin and manufacturing method thereof Download PDFInfo
- Publication number
- CN108511194B CN108511194B CN201810213112.3A CN201810213112A CN108511194B CN 108511194 B CN108511194 B CN 108511194B CN 201810213112 A CN201810213112 A CN 201810213112A CN 108511194 B CN108511194 B CN 108511194B
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- flat head
- welding
- cylinder
- copper clad
- clad steel
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- 239000003990 capacitor Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010949 copper Substances 0.000 claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 230000007704 transition Effects 0.000 claims abstract description 28
- 239000011888 foil Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/008—Terminals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a capacitor guide pin and a manufacturing method thereof, which are both composed of an aluminum wire and a tinned copper clad steel wire, wherein one part of the aluminum wire is stamped and formed to form a flat head, the other part of the aluminum wire is a cylinder, the cylinder is positioned on the transverse central line of the flat head, a transition part is formed between the flat head and the cylinder, and the transition part is square R-shaped; the flat head part is of an arc-shaped structure; the tinned copper clad steel wire is welded with the cylinder of the aluminum wire, and welding spots between the tinned copper clad steel wire and the cylinder are in a truncated cone-shaped structure; the front end face of the tinned copper clad steel wire is an arc-shaped end face, and the radius is one half of the diameter of the tinned copper clad steel wire. The transition part is square R-shaped, the bending strength is high, and the phenomena of easy damage and poor fracture in the container assembly are avoided; the flat head is of an arc-shaped structure, so that the probability of puncturing the polar foil inside can be reduced, and the product quality is improved; the size and the appearance of the welding spot can be well controlled, and the phenomenon that rubber in the aperture is punctured or exposed after the rubber plug is inserted is avoided.
Description
Technical Field
The invention relates to the technical field of capacitor parts, in particular to a capacitor guide pin and a manufacturing method thereof.
Background
In the application, the capacitor has two lead pins led out as signal sources, and the function of the lead pins consists of two parts, namely internal connection and external connection. The guide pin material consists of two parts: after the aluminum wire and the tinned copper clad steel wire are welded through arc welding, a part of the aluminum wire is subjected to stamping deformation, the required shape and the required size are obtained through a die, the deformed part is rectangular, and the other part is not stamped and is kept cylindrical.
The guide pin is internally connected with a rectangular sheet shape and a capacitor electrode foil in a cold pressing method, and is wound with insulating paper to form a core; the external connection of the guide pin mainly comprises that a tinned copper clad steel wire penetrates through a hole of the rubber plug of the capacitor and is connected with the circuit board.
Because the same aluminum wire has the shapes of both stamping deformation and non-deformation, after the internal connection capacitor pole foil is wound into a core, the capacitor needs subsequent procedures to be assembled into a cylindrical aluminum shell, and in the assembling process, the stress of a tinned copper clad steel wire is transmitted to a transition part of deformation and non-deformation of the aluminum wire, and the shape of the transition part determines the stress intensity, so that the phenomena of damage and fracture easily occur in the capacitor assembly (see figure 1); in addition, the aluminum wire stamping deformation part is cold riveted with the capacitor polar foil, the thickness of the polar foil is only 65-104 mu m, the stamping deformation head part is rectangular, and the top end of the stamping deformation head part is provided with two sharp corners which are easy to puncture the polar foil (see figure 1)
The size and appearance of the welding spot are limited by the aperture size and thickness of the rubber plug of the capacitor, and because the welding is carried out in a normal state, oxygen in air generates gas explosion at high temperature, the size and appearance of the explosion point are difficult to control, and the phenomenon that rubber in the aperture is punctured or exposed after the rubber plug is inserted is caused (see figure 1); the other end of the tinned copper clad steel wire is provided with burrs and acute angles (see figure 2) due to the fact that the notch is formed, after the shell of the capacitor is sleeved with the plastic sleeve in the post-working procedure of the capacitor, the plastic sleeve is punctured and cracked due to mutual friction between the end socket and the capacitor (see figure 1).
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provide a capacitor guide pin and a manufacturing method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a condenser guide pin, is anodal guide pin and negative pole guide pin respectively, anodal guide pin is longer 5-8mm than the negative pole guide pin, anodal guide pin is the same with the structure of negative pole guide pin, and comprises aluminium wire and tinned copper clad steel wire, and its innovation point lies in: one part of the aluminum wire is stamped and formed to form a flat head, the thickness of the flat head is 0.2-0.3mm, the other part of the aluminum wire is a cylinder, the diameter of the cylinder is 1.0-2.5mm, the cylinder is positioned on the transverse central line of the flat head, a transition part is formed between the flat head and the cylinder, the transition part is square R-shaped, the length of the transition part is 1.0-1.3mm, and the maximum width of the transition part is 1.0-1.5mm; the flat head is of an arc-shaped structure; the tinned copper clad steel wire is welded with the cylinder of the aluminum wire, and welding spots between the tinned copper clad steel wire and the cylinder are in a truncated cone-shaped structure; the front end face of the tinned copper clad steel wire is an arc-shaped end face, and the radius of the front end face is one half of the diameter of the tinned copper clad steel wire.
Further, the radius of the front end face of the flat head is one half of the width of the flat head.
Further, the length of the welding spot is 0.5-0.8mm, and the outer diameter of the welding spot is smaller than or equal to the diameter of the aluminum wire.
The manufacturing method of the capacitor guide pin is characterized by respectively carrying out stamping forming, acute angle removal, welding and electrochemical deburring, and comprises the following specific steps:
and (3) stamping and forming: part of the aluminum wire is stamped and formed to form a flat head, the thickness of the flat head is 0.2-0.3mm, the other part of the aluminum wire is not stamped and is a cylinder, the diameter of the cylinder is 1.0-2.5mm, the cylinder is positioned on the transverse central line of the flat head 11, a transition part is formed between the flat head and the cylinder, the transition part is square R-shaped, the length of the transition part is 1.0-1.3mm, and the maximum width of the transition part is 1.0-1.5mm;
removing an acute angle: removing sharp angles at two ends of the flat head by adopting a three-knife die to form an arc-shaped structure, preventing the sharp angles from puncturing the internal polar foil, and particularly, cutting off a plurality of extruded edge scraps simultaneously by adopting the three-knife die during stamping to form the arc-shaped structure;
welding: when the tinned copper clad steel wire is welded with the aluminum wire, the inert gas is released instantaneously, the release time is 0.5S before welding, the delay time is 0.3S after welding and is closed, the welding time is 0.25-0.4S, the welding temperature is 30-50 ℃, the length of a welding spot is 0.5-0.8mm, the outer diameter of the welding spot is less than or equal to the diameter of the aluminum wire 1, and as the welding is carried out under the inert gas environment, the oxygen in the air can be reduced, the splashing and irregular phenomenon of the welding spot can be effectively controlled, and the air holes generated during instantaneous high-temperature welding in the welding spot can be reduced;
electrochemical deburring: after welding, burrs are generated on the front end face of the tinned copper clad steel wire, the capacitor guide pin is connected with the power generator, and the front end face of the tinned copper clad steel wire is discharged twice, the first discharge voltage is 400V, the time is 0.2S, the second discharge voltage is 200V, the time is 0.1S, and finally the arc-shaped end face is formed.
After the structure is adopted, the invention has the beneficial effects that:
the invention has simple and reasonable structure and accurate process, the transition part is square R-shaped, the bending strength is high, the bending strength can bear three 90-degree bending, and the load is 800g, thereby avoiding the phenomena of easy damage and poor fracture in the assembly of the container; the flat head is of an arc-shaped structure, so that the probability of puncturing the polar foil inside can be reduced, and the product quality is improved; the size and the appearance of the welding spot can be well controlled, and the phenomenon that rubber in the aperture is punctured or exposed after the rubber plug is inserted is avoided; the front end face of the tinned copper clad steel wire is an arc-shaped end face, and the plastic sleeve can not be pierced in the assembly of the capacitor in the post-working procedure.
Drawings
FIG. 1 is a schematic diagram of a conventional capacitor lead;
FIG. 2 is a schematic diagram of the front end face structure of a conventional capacitor lead pin;
FIG. 3 is a schematic diagram of the structure of the present invention;
FIG. 4 is a schematic view of the processing of a flat head according to the present invention;
fig. 5 is a schematic diagram of the processing of the circular arc end face in the present invention.
Reference numerals illustrate:
1 aluminum wire, 11 flat head, 12 cylinder, 13 transition part, 2 tinned copper clad steel wire, 21 arc end face, 3 welding spot, 4 three-knife mould, 5 power generator.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is presented by way of example only and is not intended to limit the invention.
Example 1
Referring to fig. 3, a capacitor guide pin is an anode guide pin and a cathode guide pin, the anode guide pin is 5-8mm longer than the cathode guide pin, the anode guide pin and the cathode guide pin have the same structure and are composed of an aluminum wire 1 and a tinned copper clad steel wire 2, one part of the aluminum wire 1 is punched and molded to form a flat head 11, the thickness is 0.2-0.3mm, the other part of the aluminum wire 1 is a cylinder 12, the diameter is 1.0-2.5mm, the cylinder 12 is positioned on the transverse central line of the flat head 11, a transition part 13 is formed between the flat head 11 and the cylinder 12, the transition part 13 is square R-shaped, the length is 1.0-1.3mm, the maximum width is 1.0-1.5mm, the transition part 13 is square R-shaped, the bending strength is high, the aluminum wire can bear three 90 DEG bending and load 800g, and the phenomena of easy damage and bad breakage in container assembly are avoided; the flat head 11 is of an arc-shaped structure; the tinned copper clad steel wire 2 is welded with the cylinder 12 of the aluminum wire 1, and a welding spot 3 between the tinned copper clad steel wire 2 and the cylinder is in a truncated cone-shaped structure; the front end face of the tinned copper clad steel wire 2 is an arc-shaped end face 21, and the radius is one half of the diameter of the tinned copper clad steel wire 2, so that a plastic sleeve can not be pierced in the assembly of the capacitor in the post-working procedure.
In embodiment 2, in order to reduce the probability of puncturing the polar foil inside and improve the product quality, the flat head 11 has an arc structure, and the radius of the front end surface of the flat head 11 is half the width of the flat head 11.
Example 3 in order to make the size and appearance of the welding spot 3 well controlled, avoid the phenomenon of puncturing the rubber in the aperture or exposing after inserting the rubber plug, the length of the welding spot 3 should be controlled between 0.5-0.8mm, and the outer diameter of the welding spot 3 is less than or equal to the diameter of the aluminum wire 1. .
The manufacturing method of the capacitor guide pin comprises the following specific steps of stamping forming, acute angle removal, welding and electrochemical deburring:
and (3) stamping and forming: part of the aluminum wire is stamped and formed to form a flat head, the thickness of the flat head is 0.2-0.3mm, the other part of the aluminum wire is not stamped and is a cylinder, the diameter of the cylinder is 1.0-2.5mm, the cylinder is positioned on the transverse central line of the flat head 11, a transition part is formed between the flat head and the cylinder, the transition part is square R-shaped, the length of the transition part is 1.0-1.3mm, and the maximum width of the transition part is 1.0-1.5mm (see figure 3);
removing an acute angle: removing sharp angles at two ends of the flat head by adopting a three-knife die 4 to form an arc-shaped structure, preventing the sharp angles from puncturing the internal polar foil, and particularly, cutting off a plurality of extruded edge scraps simultaneously by adopting the three-knife die 4 during stamping to form an arc-shaped structure (see figure 4);
welding: when the tinned copper clad steel wire is welded with the aluminum wire, the inert gas is released instantaneously at local part, the release time is 0.5S before welding, the delay time after welding is 0.3S and is closed, the welding time is 0.25-0.4S, the temperature is kept at 30-50 ℃ during welding, the length of a welding spot is 0.5-0.8mm, the outer diameter of the welding spot is smaller than or equal to the diameter of the aluminum wire 1 (see figure 3), and as the welding is carried out under the inert gas environment, the oxygen in the air can be reduced, the splashing and irregular phenomenon of the welding spot can be effectively controlled, and the air hole generated during instantaneous high-temperature welding in the welding spot can be reduced;
electrochemical deburring: after the welding is finished, burrs are generated on the front end face of the tinned copper clad steel wire, the capacitor guide pin is connected with the power generator 5, and the front end face of the tinned copper clad steel wire is discharged twice, the first discharge voltage is 400V, the time is 0.2S, the second discharge voltage is 200V, the time is 0.1S, and finally the arc-shaped end face is formed (see fig. 3 and 5).
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (3)
1. The manufacturing method of the capacitor guide pin is characterized by respectively carrying out stamping forming, acute angle removal, welding and electrochemical deburring, and comprises the following specific steps:
and (3) stamping and forming: part of the aluminum wire is stamped and formed to form a flat head, the thickness of the flat head is 0.2-0.3mm, the other part of the aluminum wire is not stamped and is a cylinder, the diameter of the cylinder is 1.0-2.5mm, the cylinder is positioned on the transverse central line of the flat head, a transition part is formed between the flat head and the cylinder, the transition part is square R-shaped, the length of the transition part is 1.0-1.3mm, and the maximum width of the transition part is 1.0-1.5mm;
removing an acute angle: removing sharp angles at two ends of the flat head by adopting a three-knife die to form an arc-shaped structure, preventing the sharp angles from puncturing the internal polar foil, and simultaneously cutting off a plurality of extruded edge scraps by adopting the three-knife die during stamping to form the arc-shaped structure;
welding: when the tinned copper clad steel wire is welded with the aluminum wire, the inert gas is released instantaneously, the release time is 0.5S before welding, the delay time is 0.3S after welding and is closed, the welding time is 0.25-0.4S, the welding temperature is 30-50 ℃, the length of a welding spot is 0.5-0.8mm, the outer diameter of the welding spot is smaller than or equal to the diameter of the aluminum wire, and as the welding is performed under the inert gas environment, the oxygen in the air can be reduced, the splashing and irregular phenomenon of the welding spot can be effectively controlled, and the air holes generated during instantaneous high-temperature welding inside the welding spot can be reduced;
electrochemical deburring: after welding, burrs are generated on the front end surface of the tinned copper clad steel wire, the capacitor guide pin is connected with the power generator, and the front end surface of the tinned copper clad steel wire is discharged twice, wherein the first discharge voltage is 400V, the time is 0.2S, the second discharge voltage is 200V, the time is 0.1S, and finally the arc-shaped end surface is formed;
the capacitor guide pins are respectively an anode guide pin and a cathode guide pin, the anode guide pin is 5-8mm longer than the cathode guide pin, the anode guide pin and the cathode guide pin are identical in structure and are composed of aluminum wires and tinned copper clad steel wires, one part of the aluminum wires is formed by stamping to form a flat head part, the thickness of the aluminum wires is 0.2-0.3mm, the other part of the aluminum wires is a cylinder, the diameter of the aluminum wires is 1.0-2.5mm, the cylinder is positioned on the transverse central line of the flat head part, a transition part is formed between the flat head part and the cylinder, the transition part is square R-shaped, the length of the aluminum wires is 1.0-1.3mm, and the maximum width of the aluminum wires is 1.0-1.5mm; the flat head is of an arc-shaped structure; the tinned copper clad steel wire is welded with the cylinder of the aluminum wire, and welding spots between the tinned copper clad steel wire and the cylinder are in a truncated cone-shaped structure; the front end face of the tinned copper clad steel wire is an arc-shaped end face, and the radius of the front end face is one half of the diameter of the tinned copper clad steel wire.
2. The method for manufacturing the capacitor lead according to claim 1, wherein: the radius of the front end face of the flat head is one half of the width of the flat head.
3. The method for manufacturing the capacitor lead according to claim 1, wherein: the length of the welding spot is 0.5-0.8mm, and the outer diameter of the welding spot is smaller than or equal to the diameter of the aluminum wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213112.3A CN108511194B (en) | 2018-03-15 | 2018-03-15 | Capacitor guide pin and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213112.3A CN108511194B (en) | 2018-03-15 | 2018-03-15 | Capacitor guide pin and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN108511194A CN108511194A (en) | 2018-09-07 |
| CN108511194B true CN108511194B (en) | 2024-04-09 |
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| CN201810213112.3A Active CN108511194B (en) | 2018-03-15 | 2018-03-15 | Capacitor guide pin and manufacturing method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517890B (en) * | 2019-08-27 | 2024-09-06 | 达州市金联富电子科技有限公司 | Capacitive guide pin, tail end processing system and processing method |
| CN110853926B (en) * | 2019-11-15 | 2022-08-19 | 益阳市宜兴电子有限公司 | Aluminum electrolytic capacitor |
| CN112053850B (en) * | 2020-10-12 | 2022-05-24 | 立敦电子科技（惠州）有限公司 | Preparation method of special miniature-capacitor shrinkage guide pin |
| CN118258816B (en) * | 2024-05-29 | 2024-09-20 | 南通南平电子科技有限公司 | Quality inspection method and system for rounded corner product vehicle-mounted capacitor guide pin |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011155279A (en) * | 2011-03-14 | 2011-08-11 | Elna Co Ltd | Aluminum electrolytic capacitor |
| CN202120763U (en) * | 2011-05-18 | 2012-01-18 | 丰宾电子（深圳）有限公司 | Capacitor guide pin and aluminium electrolytic capacitor |
| CN202650848U (en) * | 2012-06-07 | 2013-01-02 | 袁永 | A polymer aluminum electrolytic capacitor and an anode guiding pin thereof |
| CN206961684U (en) * | 2017-04-13 | 2018-02-02 | 东莞市日辉电子有限公司 | A kind of novel aluminium electrolytic capacitor guide pin |
| CN208027911U (en) * | 2018-03-15 | 2018-10-30 | 南通南铭电子有限公司 | A kind of capacitor guide pin |
-
2018
- 2018-03-15 CN CN201810213112.3A patent/CN108511194B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011155279A (en) * | 2011-03-14 | 2011-08-11 | Elna Co Ltd | Aluminum electrolytic capacitor |
| CN202120763U (en) * | 2011-05-18 | 2012-01-18 | 丰宾电子（深圳）有限公司 | Capacitor guide pin and aluminium electrolytic capacitor |
| CN202650848U (en) * | 2012-06-07 | 2013-01-02 | 袁永 | A polymer aluminum electrolytic capacitor and an anode guiding pin thereof |
| CN206961684U (en) * | 2017-04-13 | 2018-02-02 | 东莞市日辉电子有限公司 | A kind of novel aluminium electrolytic capacitor guide pin |
| CN208027911U (en) * | 2018-03-15 | 2018-10-30 | 南通南铭电子有限公司 | A kind of capacitor guide pin |
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| CN108511194A (en) | 2018-09-07 |
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