JPH0426535B2 - - Google Patents
Info
- Publication number
- JPH0426535B2 JPH0426535B2 JP28060084A JP28060084A JPH0426535B2 JP H0426535 B2 JPH0426535 B2 JP H0426535B2 JP 28060084 A JP28060084 A JP 28060084A JP 28060084 A JP28060084 A JP 28060084A JP H0426535 B2 JPH0426535 B2 JP H0426535B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode foil
- capacitor element
- electrolytic capacitor
- winding
- electrolytic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011888 foil Substances 0.000 claims description 44
- 238000004804 winding Methods 0.000 claims description 39
- 239000003990 capacitor Substances 0.000 claims description 35
- 238000005520 cutting process Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005530 etching Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、電解コンデンサの改良に係り、特
に、電解コンデンサ素子の巻始め端部の巻回状態
を良好にする製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in electrolytic capacitors, and particularly to a manufacturing method for improving the winding state of the winding start end of an electrolytic capacitor element.
一般の電解コンデンサは、電極箔と電解紙とを
巻回して形成した電解コンデンサ素子を電解液に
含浸した後、外装ケースに収納して製造してい
る。
A general electrolytic capacitor is manufactured by impregnating an electrolytic capacitor element formed by winding electrode foil and electrolytic paper in an electrolytic solution, and then storing the element in an exterior case.
この電解コンデンサの静電容量は、陽極に用い
られる電極箔の表面積に比例する。そこで、陽極
電極箔の表面は、電解コンデンサ素子の単位体積
当りの静電容量を増加させるため、エツチング等
の拡大処理が施される。特に、大容量化を図る場
合、高倍率のエツチング処理を施して、陽極電極
箔を貫通する微細な透孔を形成している。 The capacitance of this electrolytic capacitor is proportional to the surface area of the electrode foil used as the anode. Therefore, the surface of the anode electrode foil is subjected to enlarging treatment such as etching in order to increase the capacitance per unit volume of the electrolytic capacitor element. In particular, when increasing the capacity, a high-magnification etching process is performed to form fine holes penetrating the anode electrode foil.
そのため陽極電極箔は、剛性であるとともに極
端に脆弱になり、わずかな機械的ストレスに対し
ても割れ、折れ等の破損が生じてしまう。 As a result, the anode electrode foil is both rigid and extremely brittle, and even a slight mechanical stress causes damage such as cracking or bending.
そこで、高倍率の陽極電極箔は、先端にすり割
りを備えた巻軸により、陰極電極箔および複数の
電解紙を予め巻回した後、電解紙の巻に挟み込ま
れると共に、巻回されていた。 Therefore, a high-magnification anode electrode foil was prepared by pre-winding a cathode electrode foil and a plurality of pieces of electrolytic paper using a winding shaft with a slot at the tip, and then sandwiching it between rolls of electrolytic paper and winding it. .
しかし従来の巻回方法によると、陽極電極箔が
剛性であるため、巻始め端部が予め巻回された陰
極電極箔および電解紙の曲面に馴染まず、直線状
になつてしまう。そのため、電解コンデンサ素子
の陽極電極箔の巻始め端部付近には、空隙が形成
され、電解コンデンサ素子の巻回状態を乱して体
積効率の低下を招く場合があつた。あるいは、陽
極電極箔自体の巻回を困難にしていた。
However, according to the conventional winding method, since the anode electrode foil is rigid, the winding start end does not conform to the curved surfaces of the cathode electrode foil and electrolytic paper that have been wound in advance, and ends up in a straight line. Therefore, a void is formed near the winding start end of the anode electrode foil of the electrolytic capacitor element, which may disturb the winding state of the electrolytic capacitor element, resulting in a decrease in volumetric efficiency. Alternatively, it has been difficult to wind the anode electrode foil itself.
また、陽極電極箔の巻始め端部の角部が電解紙
を突き破り、電気的短絡等の事故を誘発すること
もあつた。 In addition, the corner of the anode electrode foil at the beginning of winding could break through the electrolytic paper, causing accidents such as electrical short circuits.
この発明の目的は、電極箔の巻始め端部の巻回
状態を良好にし、電解コンデンサ素子の体積効率
の向上を図ることにある。 An object of the present invention is to improve the winding state of the winding start end of the electrode foil and to improve the volumetric efficiency of an electrolytic capacitor element.
先端にすり割りを備えた巻軸により、電極箔と
電解紙とを異なる位置で巻回する電解コンデンサ
素子の製造方法において、電極箔を断裁するカツ
タと、端面の一部に電解コンデンサ素子の中心部
付近と略同曲率の円弧が形成された押圧部とが一
体に形成された断裁刃によつて断裁された電極箔
を、予め空巻きした電解紙に挟み込むとともに巻
回することを特徴としている。
In a manufacturing method for an electrolytic capacitor element, in which electrode foil and electrolytic paper are wound at different positions using a winding shaft with a slot at the tip, a cutter for cutting the electrode foil and a part of the end face of the electrolytic capacitor element are attached to the center of the electrolytic capacitor element. The electrode foil is cut by a cutting blade integrally formed with a pressing part having an arc of approximately the same curvature as the area around the electrode foil, and the electrode foil is sandwiched between pre-empty rolled electrolytic paper and then wound. .
以下この発明の実施例を図面にしたがい説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は、この発明の実施例による電極箔の巻
回工程を説明する説明図である。第２図は、実施
例において使用する断裁刃の構造を示す断面図で
ある。 FIG. 1 is an explanatory diagram illustrating a process of winding an electrode foil according to an embodiment of the present invention. FIG. 2 is a sectional view showing the structure of the cutting blade used in the example.
図面において電極箔１は、表面にエツチング処
理を施されている。更に、陽極側の電極箔１は、
誘電体酸化皮膜層が形成される。この電極箔１
は、断裁刃５によつて断裁される。 In the drawing, the electrode foil 1 has been subjected to an etching process on its surface. Furthermore, the electrode foil 1 on the anode side is
A dielectric oxide layer is formed. This electrode foil 1
is cut by the cutting blade 5.
断裁刃５は、第２図に示したように、電極箔１
を断裁するカツタ６と、端面の一部に凸状円弧が
形成された押圧部７とが一体に形成された上刃５
(a)、およびこの上刃５(a)に設けられた円弧と同曲
率の凹状円弧の押圧部９を備えた下刃５(b)とから
構成されている。また断裁刃５に備えられた押圧
部７，９の円弧は、巻回される電解コンデンサ素
子４の中心部付近の曲面と略同曲率に形成されて
いる。 The cutting blade 5 cuts the electrode foil 1 as shown in FIG.
The upper blade 5 is integrally formed with a cutter 6 for cutting the cutter 6 and a pressing part 7 having a convex arc formed on a part of the end surface.
(a), and a lower blade 5(b) provided with a pressing portion 9 in the form of a concave arc having the same curvature as the arc provided on the upper blade 5(a). Further, the circular arcs of the pressing portions 7 and 9 provided on the cutting blade 5 are formed to have approximately the same curvature as the curved surface near the center of the electrolytic capacitor element 4 to be wound.
この断裁刃５は、第２図に示したように、矢印
Ｙの方向に移送された電極箔１を断裁するととも
に、押圧部７，９によつて電極箔１の先端に曲面
部１１を形成させる。 As shown in FIG. 2, this cutting blade 5 cuts the electrode foil 1 transferred in the direction of the arrow Y, and forms a curved part 11 at the tip of the electrode foil 1 by the pressing parts 7 and 9. let
電極箔１が断裁されると、前工程として既に完
成した電解コンデンサ素子４が巻軸３から抜き取
られ、電解紙２が巻軸３に挟み込まれる。 When the electrode foil 1 is cut, the electrolytic capacitor element 4, which has already been completed in the previous step, is removed from the winding shaft 3, and the electrolytic paper 2 is sandwiched between the winding shaft 3.
巻軸３は、第１図に示したように、先端にすり
割りを備えている。このすり割りは、複数の電解
紙２を挟み込む。このとき、電解紙２の先端は、
すり割りから僅かに突出し、電解紙２の巻回を可
能にする。次いで巻軸３は、必要な回数だけ回転
して電解紙２のみ空巻する。この空巻部分は、電
解コンデンサ素子４の中心部を構成することにな
る。 As shown in FIG. 1, the winding shaft 3 has a slot at its tip. The slots sandwich a plurality of electrolytic papers 2. At this time, the tip of the electrolytic paper 2 is
It protrudes slightly from the slot and enables winding of the electrolytic paper 2. Next, the winding shaft 3 is rotated the required number of times to emptyly wind the electrolytic paper 2 only. This air-wound portion constitutes the center of the electrolytic capacitor element 4.
電極箔１は、第１図に示したように、チヤツク
１０につて把持されて、矢印Ｘの方向から巻軸３
近傍まで移送される。次いで、複数の電解紙２の
間に引き込まれるように他方の電極箔１とともに
数回巻回されて電解コンデンサ素子４を完成させ
る。次いで、電極箔１の巻き終わり端部が断裁刃
５によつて断裁され、電解コンデンサ素子４の巻
回工程は終了する。 As shown in FIG.
Transported to nearby area. Next, it is wound several times together with the other electrode foil 1 so as to be drawn between the plurality of electrolytic papers 2 to complete the electrolytic capacitor element 4. Next, the end of the winding of the electrode foil 1 is cut by the cutting blade 5, and the winding process of the electrolytic capacitor element 4 is completed.
電極箔は、第１図に示すように、電解コンデン
サ素子４の中心部とは異なる部分から、巻回工程
の途中で挿入される。
As shown in FIG. 1, the electrode foil is inserted into the electrolytic capacitor element 4 from a part different from the center part in the middle of the winding process.
また、電極箔１の先端部は、第２図に示すよう
な断裁刃５によつて断裁されるとともに、この断
裁刃５に一体に備えられた押圧部７，９によつて
押圧されるため、曲面部１１が形成されることに
なる。この曲面部１１は、電解コンデンサ素子４
の中心部付近の曲面と略同曲率に形成されてい
る。 In addition, the tip of the electrode foil 1 is cut by a cutting blade 5 as shown in FIG. , a curved surface portion 11 is formed. This curved surface portion 11 corresponds to the electrolytic capacitor element 4
It is formed to have approximately the same curvature as the curved surface near the center of.
したがつて、この巻回工程による電極箔１の巻
始めにおいて、既に先端部分が電解コンデンサ素
子４の中心部付近の曲面と略同曲率の曲面に形成
されていることになり、剛性のある高倍率の陽極
電極箔であつても、電解コンデンサ素子４の中心
部付近に馴染み易く、良好な巻回状態を実現させ
ることが可能となる。 Therefore, at the beginning of winding the electrode foil 1 in this winding process, the tip portion has already been formed into a curved surface with approximately the same curvature as the curved surface near the center of the electrolytic capacitor element 4, and has a high rigidity. Even if the anode electrode foil has a magnification ratio, it easily fits around the center of the electrolytic capacitor element 4, and a good winding state can be realized.
なお、この発明の実施例においては、断裁刃５
として、上刃５(a)に凸状円弧の押圧部７、下刃５
(b)に凹状円弧の押圧部９を設けたが、下刃５(b)に
凸状の円弧を設け、上刃５(a)に凹状の円弧を備え
てもよい。 In addition, in the embodiment of this invention, the cutting blade 5
As shown in FIG.
In (b), the pressing portion 9 is provided with a concave arc, but the lower blade 5(b) may be provided with a convex arc, and the upper blade 5(a) may be provided with a concave arc.
以上のように、先端にすり割りを備えた巻軸に
より、電極箔と電解紙とを異なる位置で巻回する
電解コンデンサ素子の製造方法において、電極箔
を断裁するカツタと、端面の一部に電解コンデン
サ素子の中心部付近と略同曲率の円弧が形成され
た押圧部とが一体に形成された断裁刃によつて断
裁された電極箔を、予め空巻きした電解紙に挟み
込むとともに巻回することを特徴としているの
で、電極箔の巻始め端部が電解コンデンサ素子の
中心部付近の曲面に馴染み、電解コンデンサ素子
の巻回状態を乱すことがない。したがつて、電解
コンデンサ素子の体積効率を向上させることが容
易になる。
As described above, in the manufacturing method of an electrolytic capacitor element in which electrode foil and electrolytic paper are wound at different positions using a winding shaft with a slot at the tip, a cutter for cutting the electrode foil and a part of the end surface are used. The electrode foil cut by a cutting blade integrally formed with a pressing part having an arc of approximately the same curvature as the center of the electrolytic capacitor element is sandwiched between pre-empty rolled electrolytic paper and then wound. Because of this feature, the winding start end of the electrode foil conforms to the curved surface near the center of the electrolytic capacitor element, and does not disturb the winding state of the electrolytic capacitor element. Therefore, it becomes easy to improve the volumetric efficiency of the electrolytic capacitor element.
また、電極箔の巻始め端部が直線状に形成され
ることがなくなるので、従来のように、高倍率の
電極箔であつても、割れ、折れ等の破損事故が発
生しなくなり、電解コンデンサ素子の巻回工程に
おける歩留りを向上させることができる。 In addition, since the winding start end of the electrode foil is no longer formed in a straight line, even if the electrode foil has a high magnification, breakage accidents such as cracking and bending do not occur as in the past, and electrolytic capacitors Yield in the element winding process can be improved.
また、この発明による巻回工程自体は、従来の
巻回工程とほぼ同一であり、工程の大幅な変更を
することなく、良好な巻回状態の電解コンデンサ
素子を実現させることができる。 Further, the winding process itself according to the present invention is almost the same as the conventional winding process, and an electrolytic capacitor element in a good winding state can be realized without major changes in the process.
以上のように、この発明は、曲面を形成する円
弧状の押圧部を備えた断裁刃で断裁した電極箔を
電解コンデンサ素子の巻き工程の途中から挿入す
ることにより、巻回状態の良好な電解コンデンサ
素子を実現する有益な発明である。 As described above, the present invention provides an electrolytic capacitor element with good winding condition by inserting electrode foil cut by a cutting blade having an arc-shaped pressing part forming a curved surface from the middle of the winding process of an electrolytic capacitor element. This is a useful invention for realizing a capacitor element.
第１図は、この発明の実施例による電極箔の巻
回工程を説明する説明図である。第２図は、実施
例において使用する断裁刃の構造を示す断面図で
ある。
１……電極箔、２……電解紙、３……巻軸、４
……電解コンデンサ素子、５……断裁刃、６，８
……カツタ、７，９……押圧部、１０……チヤツ
ク、１１……曲面部。
FIG. 1 is an explanatory diagram illustrating a process of winding an electrode foil according to an embodiment of the present invention. FIG. 2 is a sectional view showing the structure of the cutting blade used in the example. 1... Electrode foil, 2... Electrolytic paper, 3... Winding shaft, 4
... Electrolytic capacitor element, 5 ... Cutting blade, 6, 8
...Cut, 7, 9...Press portion, 10...Chick, 11...Curved surface portion.
Claims (1)
と電解紙とを異なる位置で巻回する電解コンデン
サ素子の製造方法において、電極箔を断裁するカ
ツタと、端面の一部に電解コンデンサ素子の中心
部付近と略同曲率の円弧が形成された押圧部とが
一体に形成された断裁刃によつて断裁された電極
箔を、予め空巻きした電解紙に挟み込むとともに
巻回することを特徴とする電解コンデンサ素子の
製造方法。1 In a method for manufacturing an electrolytic capacitor element in which electrode foil and electrolytic paper are wound at different positions using a winding shaft with a slot at the tip, a cutter for cutting the electrode foil and a part of the end face of the electrolytic capacitor element are used. The electrode foil is cut by a cutting blade integrally formed with a pressing part having an arc of approximately the same curvature as the center part, and is sandwiched between electrolytic paper which has been blank-wound in advance and then wound. A method for manufacturing an electrolytic capacitor element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28060084A JPS61156719A (en) | 1984-12-27 | 1984-12-27 | Manufacture of electrolytic capacitor element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28060084A JPS61156719A (en) | 1984-12-27 | 1984-12-27 | Manufacture of electrolytic capacitor element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61156719A JPS61156719A (en) | 1986-07-16 |
| JPH0426535B2 true JPH0426535B2 (en) | 1992-05-07 |
Family
ID=17627289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28060084A Granted JPS61156719A (en) | 1984-12-27 | 1984-12-27 | Manufacture of electrolytic capacitor element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61156719A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0410519A (en) * | 1990-04-27 | 1992-01-14 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor |
-
1984
- 1984-12-27 JP JP28060084A patent/JPS61156719A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61156719A (en) | 1986-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5968210A (en) | Electrolytic capacitor and method of manufacture | |
| JP3870064B2 (en) | Apparatus for accumulating electrical energy comprising a roll of strips and method for manufacturing the same | |
| JP2019125705A (en) | Multilayer ceramic capacitor | |
| US3298871A (en) | Electric cells with spiral wound electrodes | |
| KR102457061B1 (en) | Electrode foil, wound type capacitor, manufacturing method of electrode foil, and manufacturing method of wound type capacitor | |
| JPH0426535B2 (en) | ||
| US4545108A (en) | Cold-welding of electrolytic capacitor rolls | |
| JPH02130907A (en) | Manufacture of laminated electrolytic capacitor | |
| JPH0561771B2 (en) | ||
| JPH0257327B2 (en) | ||
| JPS629711Y2 (en) | ||
| US4551786A (en) | Unencapsulated solid electrolytic capacitor and method for manufacturing the same | |
| JP6952272B2 (en) | Electrolytic capacitors and their manufacturing methods | |
| JP2537896B2 (en) | Aluminum electrolytic capacitor manufacturing method | |
| JPH0539621Y2 (en) | ||
| JPH02276216A (en) | Electrolytic capacitor | |
| JPH0532997Y2 (en) | ||
| JP2532499B2 (en) | Aluminum electrolytic capacitor manufacturing method | |
| JPS6177321A (en) | Manufacture of capacitor element | |
| JPH0451044B2 (en) | ||
| JP3060929B2 (en) | Method of manufacturing metal rotor for trimmer capacitor | |
| KR100472514B1 (en) | Jelly-roll type electrode-assembly and method for making it | |
| JPH0314209A (en) | Laminated electronic part | |
| JPH0225231Y2 (en) | ||
| JPS5950208B2 (en) | Manufacturing method of square electrolytic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |