EP0056844B1 - Dispositif pour le dépôt électrolytique de l'aluminium - Google Patents

Dispositif pour le dépôt électrolytique de l'aluminium Download PDF

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Publication number
EP0056844B1
EP0056844B1 EP81108374A EP81108374A EP0056844B1 EP 0056844 B1 EP0056844 B1 EP 0056844B1 EP 81108374 A EP81108374 A EP 81108374A EP 81108374 A EP81108374 A EP 81108374A EP 0056844 B1 EP0056844 B1 EP 0056844B1
Authority
EP
European Patent Office
Prior art keywords
electrolyte
lifting
trough
lock
contacting
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
Application number
EP81108374A
Other languages
German (de)
English (en)
Other versions
EP0056844A1 (fr
Inventor
Siegfried Dr. Rer. Nat. Dipl.-Chem. Birkle
Johann Gehring
Klaus Stöger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT81108374T priority Critical patent/ATE15081T1/de
Publication of EP0056844A1 publication Critical patent/EP0056844A1/fr
Application granted granted Critical
Publication of EP0056844B1 publication Critical patent/EP0056844B1/fr
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/004—Sealing devices
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode

Definitions

  • the invention relates to a device for the electrodeposition of aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes, with an electroplating trough which is sealed off from the outside and can be acted upon with a protective gas, with an annularly closed electrolyte trough, and is arranged within the electroplating trough by one vertical axis of rotation rotatable contact and holding device with in a horizontal plane circumferential arms for goods carriers provided with transport bars, several anode plates positioned within the electrolyte trough, and one each arranged on the electroplating trough, containing a liquid lock, charging and decharging lock, whereby the goods to be treated carrying goods carrier with the help of a first endless chain conveyor over the charging lock in the electroplating trough and automatically delivered there to the support arms of the contacting and holding device n and after the treatment of the goods with the aid of a second endless chain conveyor are automatically removed from the supporting arms of the contacting and holding device and conveyed out via the
  • a device of this type is the subject of the European publication EP-A-0 953 676.
  • EP-A-0 953 676 In order to prevent oxygen and water vapor from diffusing into the electrolyte when the product carriers are introduced and the electrolyte from being carried out when the product carriers are removed, the antechamber and main chamber are to be prevented the charging and decharging locks are connected to each other via a liquid lock filled with an aprotic solvent.
  • the endless chain conveyor enables simple and economical loading of the electroplating tank.
  • the goods carriers consist of a type of frame to which the workpieces to be aluminized are fastened with the aid of electrically conductive holding wires.
  • the frame itself is electrically conductive and is connected to the negative pole of a power source via the support arms of the contacting and holding device.
  • the various support arms can be supplied with power separately, so that different deposition conditions can be set for different workpieces.
  • the individual support arms can be loaded and emptied simultaneously and intermittently without interruptions.
  • the automatic transfer or removal of the product carriers to the support arms of the contacting and holding device takes place in that the product carriers are provided with a transport rod, engage the hook-shaped drivers of the chain conveyors and their ends are designed as support and contacting pins, which are designed accordingly pan-shaped ends of the fork-shaped support arms of the contacting and holding device cooperate.
  • the invention has for its object to provide in a device of the type described in the introduction that the anode plates can also be replaced during operation.
  • anode plates are also provided with horizontal transport rods are and that a lifting and moving device for the anode plates can be placed on the upper end cover of the electrolyte trough.
  • the anode plates are thus introduced into the electrolyte trough via the charging lock with the aid of the contacting and holding device and then removed from the supporting arms of the contacting and holding device with the aid of the lifting and displacing device and adjusted accordingly in the radial direction.
  • the used anode plates are also removed from their holder with the aid of the lifting and moving device and transferred to the support arms of the contacting and holding device.
  • the used anode plates With the help of the contacting and holding device, the used anode plates are brought into the decharging lock, where they are led to the outside with the aid of the second chain conveyor after the electrolyte still adhering to it has been sprayed off.
  • the device shown in FIGS. 1 to 3 essentially corresponds to the electroplating device described in European publication EP-A-0 053 676.
  • the electroplating trough consists of a circular and rotationally symmetrical electrolyte trough 1, an upper end cover 2, an upper end hood 3 and a lower end hood 4.
  • the electrolyte trough is suspended in a likewise circular and rotationally symmetrical heating trough 5 which accommodates a heating bath 6, for example one Oil bath, serves.
  • the heating of the heating bath 6 can, as in the case shown, be carried out via heating cartridges 7 or also by connecting to a circulating heating.
  • the electrolyte trough 1 and the heating trough 5 are hung together in a frame 8, which gives the entire device the required static strength.
  • the upper end cover 2 has two inner lock openings 9, 10 offset by 90 °, as shown in particular in FIG. In Fig. 1 only the inner lock opening 9 in the end cover 2 can be seen.
  • the contacting and holding device 12 consists of a rotor 121, which has a total of 12 equally spaced support arms 122 with sensors 123 at the fork-shaped ends.
  • the shaft 124 of the rotor 121 which is arranged centrally with respect to the electrolyte trough 1, is rotatably mounted with the aid of two gas-tight flange bearings 125 and is supported at the bottom on an axial bearing 126 connected to the frame 8.
  • the rotor 121 is driven above the upper end cover 3 via bevel gears 127 and 128 by a geared motor 129, which is of explosion-proof design.
  • Each of the 12 support arms 122 has a separate cathode connection 130, only the cathode connection for the support arm 122 lying in the sectional plane of FIG. 1 being shown in the drawing.
  • the connection of the cathode connections 130 with the associated transducers 123 takes place via carbon brushes and slip rings, which is not shown in the drawing.
  • the free ends of the support arms 122 are fork-shaped and carry at the ends the receptacles 123, into which the correspondingly configured ends of a transport rod 141 connected to a goods carrier 14 can be hung.
  • the goods carrier 14 consist of a kind of frame in which the workpieces to be aluminized are fastened.
  • the workpieces can thus be guided in a circular orbit through an electrolyte 15 filled in the electrolyte trough 1 by the rotary movement of the contacting and holding device 12.
  • outer anode plates 16 are arranged in an outer ring and inner anode plates 17 are arranged in an inner ring.
  • the anode plates 16 and 17 are provided at the upper end with two holding brackets 161 in order to be able to hang them in corresponding anode suspensions 162 and 172.
  • the anode suspensions 162 and 172 are fastened in a correspondingly insulated manner to the inner and outer wall of the electrolyte trough 1.
  • the power supply to the inner and outer anode suspensions 162 and 172, not shown in the drawing, is carried out in a manner customary in electroplating.
  • the electroplating trough is charged with a dry protective gas, which is guided, for example, through a connector 18 attached in the upper cover 3 and metered in such a way that it is always under a slight excess pressure stands.
  • the electroplating trough forms a space which is sealed off from the outside and is exposed to protective gas and which only allows the goods carriers to be introduced or removed through the two inner lock openings 9 and 10 mentioned earlier. So that no ambient air can penetrate into the electroplating trough at these points either, a shaft-shaped condensation chamber 19 is provided above the inner lock opening 9, to which a charging lock 20 is connected.
  • the inner lock opening 10 is also provided with a corresponding condensation space and a decharging lock, which practically corresponds to the charging lock 20.
  • the charging lock 20 consists of a container 201 which is rectangular in plan and in which an aprotic solvent 21 is located.
  • the container 201 is divided into a prechamber 203 and a main chamber 204 by a partition 202 immersed in the solvent 21, the latter passing into the condensation chamber 19.
  • the solvent 21 and the partition 202 immersed in it thus form a liquid lock 205, which makes it impossible for air and moisture to penetrate into the electroplating trough.
  • the antechamber 203 has an inlet opening 206 for the goods carriers which can be closed in a vacuum-tight manner. These can be introduced with the aid of an endless transport chain 22 from the pre-chamber 203 via the liquid lock 205 into the main chamber 204 and from there via the condensation chamber 19 into the electroplating trough.
  • rollers 221 arranged in the side walls of the container 201 provide two transport chains 22 arranged parallel to one another, which can be driven by a geared motor 222 and a countershaft gear 223 together via a shaft 224. Between the transport chains 22 there are arranged crossbeams 225 which, by means of driving hooks 226, automatically grasp the transport rods 141 of the goods carriers 14 and, with their ends designed as carrying and contacting pins 142, are able to rest in the receptacles 123 of the carrying arms 122.
  • the input opening 206 is opened while simultaneously flushing the antechamber 203 with inert gas and thus displacing the air in this space, one is hung with the goods to be electroplated on the catch hooks 226 and the input opening 206 is closed again.
  • the transport device is then started, the goods carrier 14 being passed through the liquid lock 205 and being delivered via the main chamber 204 to the receptacles 123 of the support arms 122.
  • the catch hooks 226 automatically detach from the transport rod 141.
  • the removal of the goods carrier 14 is carried out in the same way, except that the transport chains move in the opposite direction.
  • the catch hooks 226 then automatically grip the transport rod 141 of the goods carrier 14.
  • the condensation chamber 19 in a decharging lock is equipped with spray nozzles 191 for spraying the galvanized goods and the goods carriers with a solvent which is compatible with the electrolyte.
  • the anode plates 16 and 17 as well as the goods carriers 14 are now provided with corresponding transport rods 163.
  • the transport rod 163 is connected via a transport cross 164 to the anode plate 16 by a screw connection 165, as shown in FIGS. 4 and 5.
  • a threaded bore 166 is provided for a coupling rod 241 of a lifting and displacing device 24, which can be placed above a cover segment 11.
  • the coupling rod 241 engages through a radial slot 111 of the cover segment 11. This is so long that the anode plates 16 can be hooked into the outer as well as the inner anode suspension 162 or 172 by means of the holding bracket 161.
  • the anode plates 16 and 17 are also attached to the entraining hooks 226 of the transport chain 22 via the input opening 206 with their transport rod 163 after opening the prechamber 203 flooded with inert gas.
  • the input opening 206 is then closed again.
  • the transport chain 22 is then set in motion, in which case the anode plate 16 is passed through the liquid lock 205 and is guided into the electroplating trough 1 via the main chamber 204 and the condensation nozzle 19 and is delivered there to the receptacles 123 of the contacting and holding device 12.
  • the corresponding support arm 122 must first be freed from a product carrier and the anode plate to be replaced must be removed beforehand.
  • the rotor 121 is set in motion and the support arm carrying the anode plate to be replaced is moved into the corresponding storage position.
  • the radial slot 111 in the cover segment 11 is normally closed by a type of cover 23.
  • a base plate 242 of the lifting and moving device 24 is placed, the base plate 242 being moved into the position shown in FIGS. 4 and 5, in which the coupling rod 241 is located above the slot 111, while simultaneously pushing the cover away.
  • the coupling rod 241 is axially displaceably arranged in a threaded sleeve 243, which is guided in a pipe socket 245 fastened to a slide 244 of the base plate 242 and can be moved axially with the aid of a threaded nut 246 which is supported on the end of the pipe socket 245.
  • the threaded nut 246 is provided with a handle 247.
  • a knurled head 248 is provided, with which the clutch tion rod 241 can be screwed into the threaded bore 166 of the transport cross 164.
  • the coupling rod 241 with the anode plate 16 attached to it is raised when the upper end of the threaded sleeve 243 abuts the knurled head 248. The lifting takes place so far that the transport rod 163 of the anode plate 16 is lifted out on the sensors 123.
  • the slide 244 of the base plate 242 is moved so far outward, for example in the direction of the arrow, that the transport rod 163 can be lowered with the anode plate 16 and then moved outwards, so that after further lowering Coupling rod 241, the anode plate 16 with its bracket 161 can be hung in the anode suspension 162.
  • the lifting and displacement device is then returned to its starting position, the coupling rod 241 being pulled out of the longitudinal slot 111, so that the radial slot 111 is closed again by moving the base plate 242 by pushing the cover plate 23 forward.
  • the released arm 122 can then be moved to the next position to lift another anode plate 16 or 17 to be replaced in the same manner as described above and put it in the receptacles 123, after which the arm 122 is moved under the inner lock opening 10 of the decharging lock, whereby by starting the transport chain of the decharging device, the respective support arm 122 is automatically discharged and the respective anode plate is led out via the decharging lock.
  • Exchanging the anode plates 16 and 17 arranged under the inner lock openings 9 and 10 takes place in the same way as described above, except for the use of longer coupling rods.
  • two correspondingly long coupling rods can also be used, which are then arranged on both sides of the chain conveyor 22, at least one rod connecting the conveyor chains having a crank.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (9)

1. Installation de dépôt par galvanoplastie, d'aluminium à partir d'électrolytes aprotiques, anhydres et exempts d'oxygène, comprenant une cuve de galvanoplastie fermée par rapport à l'extérieur, pouvant être alimenté en un gaz de protection et ayant un bac à électrolyte annulaire fermé, un dispositif assurant le contact électrique et le maintien, qui est disposé à l'intérieur de la cuve de galvanoplastie, qui peut tourner autour d'un axe de rotation vertical et qui a des bras-supports tournant dans un plan horizontal et destinés à des châssis porte-objets munis de barres de transport, plusieurs plaques d'anode disposées de manière à pouvoir être mises en position à l'intérieur du bac à électrolyte, et des sas de chargement et de déchargement, disposés respectivement sur la cuve de galvanoplastie et contenant un sas à liquide, les châssis porte-objets qui porte les objets à traiter étant transportés, à l'aide d'un premier transporteur à chaîne sans fin, dans le bac à électrolyte en passant par le sas de chargement et y étant remis automatiquement aux bras-supports du dispositif assurant le contact électrique et le maintien et, après le traitement des objets, étant, à l'aide d'un second transporteur à chaîne sans fin, enlevés automatiquement des bras-supports du dispositif assurant le contact électrique et le maintien et étant sorties par les sas de déchargement, les châssis porte-objets étant munis d'une barre de transport horizontale, à laquelle s'accrochent des crochets d'entraînement des transporteurs chaîne, les extrémités des châssis porte-objets étant agencées en tenons assurant le support et le contact électrique et coopérant avec des logements correspondants, contitués sous forme de godet, des bras-supports en forme de fourche du dispositif assurant le contact électrique et le maintien, caractérisé en ce que les plaques d'anodes (16, 17) sont également munies des barres de transport (163) horizontales, et en ce qu'il est prévu un dispositif de soulèvement et de translation (24) des plaques d'anode (16, 17) qui peut être posé sur le couvercle supérieur de fermeture (2) du bac à électrolyte (1
2. Installation suivant, la revendication 1, caractérisée en ce que le dispositif de soulèvement et de translation (24) peut être posé au-dessus d'une ouverture qui peut être fermée et qui est ménagée dans le couvercle supérieur der fermeture (2) du bac à électrolyte (1).
3. Installation suivant la revendication 1 ou 2, caractérisée en ce que le couvercle supérieur de fermeture (2) possède des ouvertures qui peuvent être fermées par des segments de couvercle (11) puvant être enlevés et en ce que les segments de couvercle (11) sont munis de fentes radiales (111) qui peuvent être fermées par des couvercles (23) pendant la galvanoplastie.
4. Installation suivant la revendication 3, caractérisée en ce que les couvercle (23) et une plaque de base (242) du dispositif de soulèvement et de translation (24) sont montés de manière à pouvoir coulisser sur des segments de couvercle (11) du bac à électrolyte (1) de manière à ce que les fentes radiales (111) restent toujours fermées, lorsqu'un couvercle (23) s'éloigne sous la poussée de la plaque de base (242) du dispositif de soulèvement et de translation (24) et inversement.
5. Installation suivant la revendication 4, caractérisé en ce que le dispositif de soulèvement et - de translation (24) présente une barre d'accouplement (241) pénétrant dans la fente radiale (111) du segment de couvercle (11) du bac à électrolyte (1) et portant à l'extrémité inférieure un filetage qui coopère avec un taraudage (166) ménagé dans la plaque d'anode (16) ou dans sa barre de transport (163).
6. Installation suivant la revendication 5, caractérisée en ce que la barre d'accouplement (241) guidée de manière étanche dans la plaque de base (242) du dispositif de soulèvement et de translation (24) peut être relevée et abaissée à l'aide d'une douille filetée (243) et d'un écrou taraudé (246), la douille filetée (243) étant guidée dans un raccord tubulaire (245) et pouvant être déplaceé axialement à l'aide de l'écrou taraudé (246) s'appuyant du côté frontal sur l'extrémité du raccord tubulaire (245).
7. Installation selon la revendication 6, caractérisée en ce que sur la plaque de base (242) est disposé un poussoir (244) qui porte le raccord tubulaire (245) et qui peut être déplacé moyen d'une broche filetée (249).
8. Installation suivant l'une des revendications 1 à 7, caractérisée en ce que dans le cas de plaques d'anode (16, 17) disposées dans la région du sas, elles peuvent être remplacées en se servant d'une longue barre correspondante.
9. Installation suivant la revendication 8, caractérisée en ce que l'on peut utiliser deux barres d'accouplement, qui sont disposées des deux côtés des chaînes transporteuses et en ce que au moins l'une des barres reliant les chaînes transporteuse présente un coude.
EP81108374A 1981-01-22 1981-10-15 Dispositif pour le dépôt électrolytique de l'aluminium Expired EP0056844B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108374T ATE15081T1 (de) 1981-01-22 1981-10-15 Vorrichtung zum galvanischen abscheiden von aluminium.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3102021A DE3102021C2 (de) 1981-01-22 1981-01-22 Vorrichtung zum galvanischen Abscheiden von Aluminium
DE3102021 1981-01-22

Publications (2)

Publication Number Publication Date
EP0056844A1 EP0056844A1 (fr) 1982-08-04
EP0056844B1 true EP0056844B1 (fr) 1985-08-21

Family

ID=6123130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108374A Expired EP0056844B1 (fr) 1981-01-22 1981-10-15 Dispositif pour le dépôt électrolytique de l'aluminium

Country Status (4)

Country Link
US (1) US4415422A (fr)
EP (1) EP0056844B1 (fr)
AT (1) ATE15081T1 (fr)
DE (2) DE3102021C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231855A1 (de) * 1982-08-26 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum galvanischen abscheiden von aluminium
IT1199898B (it) * 1985-07-22 1989-01-05 Ginatta Marco Elettrochim Impianto per la produzione elettrolitica in bagno di sali fusi di metalli reattivi
US4759831A (en) * 1986-07-04 1988-07-26 Siemens Aktiengesellschaft Electroplating apparatus particularly for electro-deposition of aluminum
CN104451816B (zh) * 2014-12-29 2017-03-29 泉州市三星消防设备有限公司 消防器材自动表面处理机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537256C3 (de) * 1975-08-21 1979-05-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vorrichtung zum galvanischen Abscheiden von Aluminium
DE2716805C3 (de) * 1977-04-15 1979-10-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vorrichtung zum galvanischen Abscheiden von Aluminium
DE2901586A1 (de) * 1979-01-17 1980-07-31 Montblanc Simplo Gmbh Aluminierzelle
DE3044975C2 (de) * 1980-11-28 1985-10-31 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum galvanischen Abscheiden von Aluminium

Also Published As

Publication number Publication date
DE3102021C2 (de) 1984-02-23
ATE15081T1 (de) 1985-09-15
US4415422A (en) 1983-11-15
DE3102021A1 (de) 1982-07-29
EP0056844A1 (fr) 1982-08-04
DE3171930D1 (en) 1985-09-26

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