DE1010184B - Method for cutting a strip-shaped aluminum electrode for electrolytic capacitors - Google Patents
Method for cutting a strip-shaped aluminum electrode for electrolytic capacitorsInfo
- Publication number
- DE1010184B DE1010184B DEA20900A DEA0020900A DE1010184B DE 1010184 B DE1010184 B DE 1010184B DE A20900 A DEA20900 A DE A20900A DE A0020900 A DEA0020900 A DE A0020900A DE 1010184 B DE1010184 B DE 1010184B
- Authority
- DE
- Germany
- Prior art keywords
- forming
- cutting
- electrolytic capacitors
- strip
- shaped aluminum
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 5
- 229910052782 aluminium Inorganic materials 0.000 title claims description 5
- 239000011888 foil Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- 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
- H01G9/0029—Processes of manufacture
-
- 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zum Trennen einer bandförmigen Aluminiumelektrode für Elektrolytkondensatoren Bekanntlich werden bei der Herstellung von Elektrolytkondensatoren für die Elektroden bandförmige Aluminiumfolien verwendet, deren Oberfläche vielfach durch chemische oder elektrochemische Ätzung, z. B. durch Behandlung in einer Säurelösung mit Wechselstrom, vergrößert wird. Die glatten oder aufgeraubten Folienbänder werden vor dem Zusammenbau der Kondensatoren kontinuierlich durch Formieranlagen gezogen, in welchen mittels eines Elektrolyts unter Anlegen einer Spannung bis zu 750 V eine oberflächliche Oxydation (Formierung) der Folienbänder stattfindet. Diese Formierung kann nach verschiedenen bekannten Verfahren ausgeführt werden, z. B. durch eine stufenweise elektrolytische Behandlung in verschiedenen Elektrolyten. Normalerweise werden dafür Folienbänder in der Breite verwendet, die für den späteren Kondensator benötigt wird, d. h. in einer Breite zwischen 10 und 100 mm.Method for cutting a strip-shaped aluminum electrode for electrolytic capacitors It is known that in the manufacture of electrolytic capacitors for the electrodes tape-shaped aluminum foils are used, the surface of which is often replaced by chemical or electrochemical etching, e.g. B. by treatment in an acid solution with alternating current, is enlarged. The smooth or roughened foil strips are prior to assembly the capacitors are continuously drawn through forming systems, in which means of an electrolyte when a voltage of up to 750 V is applied, a superficial one Oxidation (formation) of the foil strips takes place. This formation can after various known methods can be carried out, e.g. B. by a gradual electrolytic treatment in various electrolytes. Usually for that Foil strips used in the width required for the later capacitor will, d. H. in a width between 10 and 100 mm.
Diese schmalen Rollen durch die Formiermaschine zu führen, bereitet immer gewisse Schwierigkeiten; insbesondere verlaufen die aufgewickelten Bänder im allgemeinen stark nach einer Seite.Passing these narrow rolls through the forming machine prepares them always certain difficulties; in particular, the wound tapes run generally strong to one side.
Es ist möglich, diesen Nachteil dadurch zu vermeiden, daß das Folienband in einer Breite, die ein Vielfaches der später für den Kondensator benötigten beträgt. durch die Formieranlage geleitet und erst nach dem Formieren in die einzelnen Rollen getrennt wird, die zum Wickeln der Elektrolytkondensatoren benutzt werden. Es entstehen aber dabei unformierte Schnittkanten, und die Messer werden rasch stumpf, da die durch das Formieren erzeugten Oxydschichten sehr hart sind.It is possible to avoid this disadvantage in that the foil tape in a width that is a multiple of the later required for the capacitor. passed through the forming system and only after forming into the individual rolls used to wind the electrolytic capacitors. It arise but unformed cutting edges and the knives quickly become blunt because the The oxide layers produced by the forming are very hard.
Die Erfindung bezieht sich nun auf ein Verfahren, durch das die eingangs erwähnten Schwierigkeiten wie auch diejenigen, die beim nachträglichen Schneiden entstehen, ganz bzw. weitgehend vermieden werden.The invention now relates to a method by which the initially mentioned difficulties as well as those with subsequent cutting arise, completely or largely avoided.
Erfindungsgemäß wird am Aluminiumfolienband vor dein Formieren eine unvollständige Trennung vorgenommen, die nach dem Formieren vervollständigt wird. Dabei wird das Aluminiumfolienband vor dein Formieren entsprechend der Breite der benötigten Kondensatorelektroden angeritzt oder so geschnitten, daß Brücken zwischen den einzelnen Bandteilen erhalten bleiben, während das vollständige Trennen der Bandteile nach dem Formieren vorgenommen wird.According to the invention, a incomplete separation made, which is completed after forming. The aluminum foil tape is then shaped according to the width of the required capacitor electrodes scored or cut so that bridges between the individual parts of the tape are retained, while the complete separation of the Band parts is made after forming.
Der Zusammenhalt zwischen den unv ollständig voneinander getrennten Bandteilen ist noch so stark, daß das Folienband wie ein ungeschnittenes durch die Forinieranlage gezogen werden kann, aber bei dem nach dem Formieren vervollständigten Trennen nur kleine unformierte Trennkanten entstehen.The cohesion between the incompletely separated Parts of the tape are still so strong that the foil tape cuts through the like an uncut Forming system can be pulled, but with the completed after forming Separate only small, unformed separating edges.
Auf diese Weise ist zunächst gewährleistet, daß das Folienband in seiner ursprünglichen Breite ohne gegenseitige Störung der später zu schneidenden Rollen durch das Formierbad läuft. Dann ist nach dem Trennen die unformierte Schnittkantenfläche wesentlich kleiner als beim einfachen Schneiden des formierten Bandes.In this way it is first ensured that the foil tape in its original width without mutual disturbance of the later to be cut Rolls through the forming bath. Then after the separation is the unformed cut edge surface much smaller than when simply cutting the formed ribbon.
Wenn das unvollständige Trennen vor dem Formieren durch Anritzen erfolgt, so geht an den Ritzstellen das Formieren besonders stark in die Tiefe, so daß nach dem Formieren das Material an diesen Stellen einen nur sehr geringen metallischen Zusammenhalt hat. Ein Trennen der einzelnen Rollen ist dann ohne Schneiden möglich, und nach dem Trenneit liegt ein Minimum an unformierter Folienoberfläche vor.If the incomplete separation takes place before forming by scoring, so the formation goes particularly deeply at the scoring points, so that after the formation of the material at these points is only very slightly metallic Has cohesion. Separation of the individual rolls is then possible without cutting, and after the separation there is a minimum of unformed film surface.
Ein ähnliches Ergebnis läßt sich durch Belassen kleiner Brücken zwischen den einzelnen, vor dem Formieren geschnittenen Rollen erreichen.A similar result can be achieved by leaving small bridges between reach the individual rolls cut before forming.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA20900A DE1010184B (en) | 1954-08-05 | 1954-08-05 | Method for cutting a strip-shaped aluminum electrode for electrolytic capacitors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA20900A DE1010184B (en) | 1954-08-05 | 1954-08-05 | Method for cutting a strip-shaped aluminum electrode for electrolytic capacitors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1010184B true DE1010184B (en) | 1957-06-13 |
Family
ID=6924798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA20900A Pending DE1010184B (en) | 1954-08-05 | 1954-08-05 | Method for cutting a strip-shaped aluminum electrode for electrolytic capacitors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1010184B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1260633B (en) * | 1960-10-13 | 1968-02-08 | Mitsumi Electric Co | Process for the production of capacitor plates from metal |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB467024A (en) * | 1935-12-09 | 1937-06-09 | Dubilier Condenser Co 1925 Ltd | Improvements in or relating to electrolytic condensers and other electrolytic devices |
US2098774A (en) * | 1932-01-16 | 1937-11-09 | Dubilier Condenser Corp | Electrolytic condenser |
-
1954
- 1954-08-05 DE DEA20900A patent/DE1010184B/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2098774A (en) * | 1932-01-16 | 1937-11-09 | Dubilier Condenser Corp | Electrolytic condenser |
GB467024A (en) * | 1935-12-09 | 1937-06-09 | Dubilier Condenser Co 1925 Ltd | Improvements in or relating to electrolytic condensers and other electrolytic devices |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1260633B (en) * | 1960-10-13 | 1968-02-08 | Mitsumi Electric Co | Process for the production of capacitor plates from metal |
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