EP0056844A1 - 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
EP0056844A1
EP0056844A1 EP81108374A EP81108374A EP0056844A1 EP 0056844 A1 EP0056844 A1 EP 0056844A1 EP 81108374 A EP81108374 A EP 81108374A EP 81108374 A EP81108374 A EP 81108374A EP 0056844 A1 EP0056844 A1 EP 0056844A1
Authority
EP
European Patent Office
Prior art keywords
trough
electrolyte
contacting
lifting
lock
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.)
Granted
Application number
EP81108374A
Other languages
German (de)
English (en)
Other versions
EP0056844B1 (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
Priority date (The priority date 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 date listed.)
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 galvanic deposition 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 which is arranged within the electroplating trough and can be rotated about a vertical axis of rotation
  • Contacting and holding device with supporting arms for goods carriers rotating in a horizontal plane, several anode plates arranged interchangeably within the electrolyte trough, and one charging and decharging device each arranged on the electroplating trough and containing a liquid lock, the goods carriers to be treated being carried with the aid of a first Endless chain conveyor via the charging lock in the electroplating trough and there automatically delivered to the support arms of the contacting and holding device and after treatment of the goods with With the help of a second endless chain conveyor, it is automatically removed from the support arms of the contacting and holding device and conveye
  • a device of this type is the subject of the older one Registration P 30 44 975.3.
  • the antechamber and main chamber of the charging and decharging locks are connected to one another via a liquid lock filled with an aprotic solvent .
  • the endless chain conveyor enables simple and economical loading of the electroplating tank.
  • the product carriers consist of a kind of frame to which the workpieces to be aluminized are attached with the aid of electrically conductive holding wires.
  • the frame itself is electrically conductive and stands over the support arms of the contacting and holding device with the negative pole of a power source in connection.
  • the various support arms can be supplied with power separately, so that different deposition conditions can be set for different workpieces.
  • the individual brackets can be loaded and emptied simultaneously and intermittently without interruption.
  • the automatic transfer or removal of ier goods carriers to the support arms of the contacting and Halvevvoriques takes place in that the goods carriers are provided with a transport rod, attack the hook-shaped drivers of the chain conveyor and their ends as Support and contacting pins are formed which cooperate with correspondingly pan-shaped ends of the fork-shaped support arms of the contacting and holding device.
  • 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.
  • This object is achieved according to the invention in that the anode plates, like the goods carriers, are provided with corresponding transport rods and how these can be introduced or removed in the electroplating trough with the aid of the chain conveyor via the charging and decharging lock and with the aid of the contacting and holding device in the Electroplating trough can be positioned.
  • the anode plates are then removed from their holders or from the support arms of the contacting and holding device with the aid of a lifting and moving 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 guided to the outside with the aid of the second chain conveyor after the electrolyte still adhering to it has been sprayed off.
  • the cover plate of the electroplating trough is preferably provided with radially extending slot-shaped openings, the number of which is proportional to the number of interchangeable anode plates and which can be closed with lids during the electroplating operation.
  • the cover for closing the slot-shaped openings and a base plate of the lifting and moving device on the cover plate of the galvanizing trough are arranged so that when a cover is pushed away by pushing the Base plate of the lifting and moving device and vice versa the slot-shaped openings always remain closed.
  • the device shown in Figures 1 to 3 corresponds essentially to the electroplating device described in the earlier application P30 44 975.3.
  • the electroplating trough consists of an annular and rotationally symmetrical electrolyte trough 1, an upper end cover 2, an upper end hood 3 and a lower end hood 4.
  • the electrolytic trough is also circular and rotationally symmetrical formed heating trough 5, which serves to hold a heating bath 6, for example an oil bath.
  • 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. 3. In Figure 1, only the inner lock opening 9 'in the end cover 2 can be seen.
  • FIG. 3 shows, openings distributed around the circumference of the upper end cover 2 are closed by removable cover segments 11. Due to the different heights of the outer wall and inner wall of the electrolyte trough 1, a free space is created in the electroplating trough between the upper end cover 2 and the upper end cover 3 on the one hand and the lower end cover 4 on the other hand.
  • This free space is provided for the accommodation of a contacting and holding device, designated overall by 12.
  • 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 supported by means 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 designed in an explosion-split 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 at the ends carry the receptacles 123, into which the correspondingly designed 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 which is not shown in more detail in the drawing, is carried out in a manner customary in electroplating.
  • the electroplating tank is acted on with a dry protective gas, which at for example, through a nozzle 18 attached in the upper cover 3 and metered so that it is always under a slight excess pressure.
  • the electroplating trough forms a space which is closed 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 enter 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 there is an aprotic solvent 21.
  • 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.
  • two transport chains 22 arranged parallel to one another are provided by rollers 221 arranged in the side walls of the container 201 can be driven by a geared motor 222 and a countershaft gear 223 together via a shaft 224.
  • crossbeams 225 which automatically take the transport rods 141 of the goods carriers 14 with catch hooks 226 and are able to deposit them in the receptacles 123 of the support 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, hanging it with the goods to be electroplated on the catch hooks 226 and closing the input opening 206 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 are now provided with corresponding transport rods 163 just like the goods carriers 14.
  • the transport rod 163 is connected via a transport cross 164 to the anode plate 16 by a screw connection 165, as in FIGS. 4 and 5 show.
  • 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 receivers 1 23 of the contacting and holding device 1 2 .
  • 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 in a threaded sleeve 243
  • a pipe socket 245 fastened to a slide 244 of the base plate 242 and is axially movable 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 at the end of the coupling rod 241, with which the coupling rod 241 can be screwed into the threaded bore 166 of the transport cross 164.
  • the lifting rod 241 with the anode plate 16 hanging thereon is raised when the upper end of the threaded sleeve 243 hits the knurled head 248.
  • the lifting takes place so far that the transport rod 163 of the anode plate 16 is lifted out of the receptacles 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 freeing arm 122 can then be moved to the next position in order to lift another anode plate 16 or 17 to be exchanged in the same manner as described above and to place it in the receptacles 123. after which the support arm 122 is moved under the inner lock opening 10 of the decharging lock, the respective support arm 122 being automatically discharged by starting the transport chain of the decharging device and the respective anode plate being led out via the decharging lock.

Landscapes

  • 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)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Coating With Molten Metal (AREA)
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 true EP0056844A1 (fr) 1982-08-04
EP0056844B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759831A (en) * 1986-07-04 1988-07-26 Siemens Aktiengesellschaft Electroplating apparatus particularly for electro-deposition of aluminum
CN104451816A (zh) * 2014-12-29 2015-03-25 泉州市三星消防设备有限公司 消防器材自动表面处理机

Families Citing this family (2)

* 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716805A1 (de) * 1977-04-15 1978-10-26 Siemens Ag Vorrichtung zum galvanischen abscheiden von aluminium
DE2901586A1 (de) * 1979-01-17 1980-07-31 Montblanc Simplo Gmbh Aluminierzelle

Family Cites Families (2)

* 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
DE3044975C2 (de) * 1980-11-28 1985-10-31 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum galvanischen Abscheiden von Aluminium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716805A1 (de) * 1977-04-15 1978-10-26 Siemens Ag Vorrichtung zum galvanischen abscheiden von aluminium
DE2901586A1 (de) * 1979-01-17 1980-07-31 Montblanc Simplo Gmbh Aluminierzelle
EP0013874A2 (fr) * 1979-01-17 1980-08-06 Montblanc-Simplo GmbH Installation pour le dépôt électrolytique de l'aluminium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759831A (en) * 1986-07-04 1988-07-26 Siemens Aktiengesellschaft Electroplating apparatus particularly for electro-deposition of aluminum
CN104451816A (zh) * 2014-12-29 2015-03-25 泉州市三星消防设备有限公司 消防器材自动表面处理机
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

Also Published As

Publication number Publication date
DE3102021C2 (de) 1984-02-23
EP0056844B1 (fr) 1985-08-21
US4415422A (en) 1983-11-15
DE3171930D1 (en) 1985-09-26
DE3102021A1 (de) 1982-07-29
ATE15081T1 (de) 1985-09-15

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