EP0433490A1 - Dispositif de traitment de surface d'objets en vrac - Google Patents

Dispositif de traitment de surface d'objets en vrac Download PDF

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Publication number
EP0433490A1
EP0433490A1 EP89123785A EP89123785A EP0433490A1 EP 0433490 A1 EP0433490 A1 EP 0433490A1 EP 89123785 A EP89123785 A EP 89123785A EP 89123785 A EP89123785 A EP 89123785A EP 0433490 A1 EP0433490 A1 EP 0433490A1
Authority
EP
European Patent Office
Prior art keywords
shaking
chutes
goods
lock
bulk material
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.)
Withdrawn
Application number
EP89123785A
Other languages
German (de)
English (en)
Inventor
Siegfried Dr.-Dipl.-Chem. Birkle
Johann Gehring
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 EP89123785A priority Critical patent/EP0433490A1/fr
Priority to US07/623,213 priority patent/US5131996A/en
Priority to JP2412246A priority patent/JPH04143300A/ja
Priority to CA002032886A priority patent/CA2032886A1/fr
Publication of EP0433490A1 publication Critical patent/EP0433490A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C25D17/16—Apparatus for electrolytic coating of small objects in bulk
    • C25D17/22—Apparatus for electrolytic coating of small objects in bulk having open containers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S209/00—Classifying, separating, and assorting solids
    • Y10S209/92—Vibratory feed conveyor

Definitions

  • the invention relates to a device for the surface treatment of pourable material, in particular for the electrodeposition of aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes, which can be at least partially transported on a conveyor track in a treatment bath.
  • the surface finish of metallic components can extend their lifespan and open up new areas of application.
  • a coating of light metal and iron materials can be useful since they are generally relatively base metals, the surfaces of which can corrode under the influence of the atmosphere.
  • Appropriate pretreatment gives the components a bare surface without a covering layer. After-treatment can be added to the metallic coating.
  • the pourable small parts must be held together so that each individual part has electrical contact.
  • the bulk material to be treated should be spread out to such an extent that the metal can be deposited on the largest possible surface of the goods and that the current density on all parts is as uniform as possible.
  • a further essential requirement for achieving perfect metal coatings with a uniform layer thickness is sufficient mixing of the material during the galvanic processing.
  • the devices for the electrolytic surface coating are equipped with conveyors for the transport of the bulk material through the electrolyte continuously, which, in conjunction with appropriate entrance and exit locks, enables continuous or even intermittent dosing and removal of the goods.
  • both the movement through the electrolyte and the mixing of the material and the transport through the electrolyte must be carried out in such a way that gentle treatment of the material is ensured and sensitive components are not mechanically damaged during the galvanic treatment.
  • electrolytic surface coating in particular bulk electroplating
  • electrochemical surface treatment of pourable material in liquids for example in the electrolytic degreasing in alkaline baths and in the electrolytic pickling or also in the case of electrolytic polishing.
  • the bulk material is switched in the electrolytic surface treatment either as a cathode or as an anode, the circuit being used as an anode, for example in electrolytic polishing, while the bulk material is switched as a cathode, for example in the deposition of aluminum.
  • a device for mass electroplating, in particular for the galvanic deposition of aluminum, a device is also suitable in which an oscillating conveyor with a horizontal and vertical oscillating component is provided for transporting the bulk material through the treatment bath.
  • this device with an oxygen-free and water-free electrolyte, the surface of which is covered by an inert gas inside a container, access to air and moisture must be prevented. Gas, liquid or vacuum locks are therefore provided for loading the bulk material to be processed and for removing it.
  • This vibratory conveyor transports the bulk goods on one using the mass forces fixed conveying path in a horizontal or inclined direction.
  • oblique vibrators or inclined handlebars serve as drive means.
  • Such drives cause vibrations in such a way that the material lifts periodically with the vibration from the support member and carries out micro-throwing movements and is thereby transported at a height in the conveying direction, possibly at a gain.
  • gravity conveyors in the form of downpipes can be provided. Vibratory conveyors of this type require only a relatively low driving force and enable the bulk material to be conveyed gently. You get an intensive movement of goods and a good electrolyte exchange as well as a uniform current consumption over the entire effective surface of the spread goods.
  • a known device for the surface treatment of pourable material contains a conveyor track inclined in one direction with steps.
  • the bulk material throws with an upward component.
  • a swing drive is provided for the conveyor track.
  • the bulk material can lift off the conveyor track during its movement.
  • the degree of contacting is accordingly correspondingly low (US Pat. No. 3,826,355).
  • the invention has for its object to simplify and improve this known device. Furthermore, in comparison to the other known devices, the mixing of the goods should be improved, the range of goods increased and the space requirement reduced.
  • the bulk material is added by the reciprocating conveyor track the downward movement accelerates steadily and is carried along by the static friction until the frictional engagement is broken. From there and during the upward movement, it continues to slide due to its kinetic energy until it is consumed by the sliding friction.
  • the bulk material is moved in a sliding process without lifting off the conveyor track; it therefore always remains in electrical contact with the electrical contacts arranged in the conveyor track. With the fall on the slide and the fall from one slide to the next, you get both a rotation of the material as well as a widespread spread and also good mixing. The result is a correspondingly uniform separation on the entire pourable goods.
  • the slide width can be chosen almost freely. With this device, it is also possible to process larger pourable individual parts.
  • the width of the slides transversely to the direction of movement can be selected at least as large as the length in the direction of movement. If the width of the shaking chutes is chosen to be greater than their length, the bulk material is mixed well and thus uniform separation. With a length of the shaking chute that is greater than its width, the length of time of the bulk material on the shaking chute becomes large in relation to the time of transport within the goods transport device. This gives a correspondingly high deposition rate.
  • an entry lock which can be designed, for example, as a vacuum lock or as a displacement lock and with which essentially the entire width of the upper slide can be loaded.
  • this import lock can be designed as a double lock, so-called tandem lock. In this embodiment there is always one of the two locks ready for emptying onto the shaker slide.
  • All shaking chutes are arranged in a zigzag, each with alternating opposite direction components of the movement and can preferably be provided with a common drive for all shaking chutes.
  • the upper, uncontacted shaking chute only serves for the uniform spreading and distribution of the bulk material on the chute surface and thus acts as a so-called homogenizer.
  • This slide can also be perforated for better distribution of the bulk material.
  • a device for the electrolytic surface coating of pourable material which is to be provided, for example, for the galvanic deposition of aluminum from aprotic, oxygen-free and water-free aluminum-organic electrolytes, contains a conveyor track 2 which consists of three shaking chutes 3, 4 and 5.
  • the upper shaker slide 3 can preferably not be electrically contacted and then serves only as a homogenizer.
  • the shaking chutes 4 and 5, which are each connected as cathodes, for example, can preferably each be assigned two anodes, which are designated 6 and 7 or 8 and 9, and one of which is above and the other below shaking chutes 4 and 5 is arranged.
  • the shaking chutes 4 and 5 can preferably be perforated with two anodes each and thereby enable an effective current flow from the anodes 7 and 9 to the bulk material 10 to be processed, which is indicated only by points within the shaking chutes 4 and 5.
  • the shaking chutes 3 to 5 are each movably supported on pedestals, of which only three are indicated in the figure for simplicity and are designated by 14 to 16.
  • the inclination of the shaking chute is essentially determined by the bulk material 10 to be processed.
  • the conveyor track 2 is assigned two drives, of which only the drive 17 is visible in the figure and that of a drive motor 19 with a preferably variable speed and at least one drive shaft 20, which is provided for the shaking chutes with an eccentric (not visible in FIG. 1).
  • the dwell time of the bulk material 10 on the shaking chute 3 to 5 can be adjusted with the speed of the drive 17.
  • a bearing at the lower end of the drive shaft 20 is designated 23.
  • An entry lock 30 is provided above the conveyor track 2, which can preferably be designed as a two-chamber lock, so-called tandem lock.
  • the two lock chambers are labeled 31 and 32.
  • the lower openings of the lock chambers 31 and 32 are each closed with a locking slide 33 and 34 via lifting elements 36, 37.
  • a closure plate 35 closes the common opening above the homogenizer.
  • This closure plate 35 is dimensioned such that at least approximately the entire width of the shaker chute 3 can be loaded with the bulk material 10 through the import lock 30.
  • Separately controllable locking slides 33 and 34 can preferably be provided to control the entry lock 30.
  • the closure plate 35 is provided with a lifting element 38.
  • the lock chambers 31 and 32 can each be closed in a vacuum-tight manner with a cover (not shown). In this embodiment of the import lock 30, the shaker slide 3 can be loaded alternately from one of the two lock chambers 31 and 32.
  • the conveyor track 2 is also assigned a goods transport device 40, which essentially consists of shopping baskets 41 to 45, which can be transported using a conveyor belt 46 or a conveyor chain.
  • a conveyor drive 47 is provided, which is not shown in the figure for the sake of simplicity and can consist, for example, of a drive motor.
  • the speed of the drive motor can preferably be controllable; the dwell time of the bulk material 10 within the transport device 40 is thus adjustable.
  • Guide rollers 48 to 50 serve to guide the conveyor belt 46.
  • a tilting device which is not detailed, is designated 51 and 52 in the figure and is only indicated as a tilted shopping cart.
  • the goods transport device can be arranged in a device for surface treatment of bulk material 10 made of ferromagnetic material device 40 also consist of an at least partially magnetizable material.
  • the shopping baskets 41 to 45 can be omitted.
  • the conveyor track 2 is arranged with the goods transport device 40 in a preferably gas-tight housing 60, the side walls of which can preferably consist of removable covers 57 and 58 and the cover 59 of which contains the entry lock 30.
  • the housing 60 is provided with a gas supply 62, for example for nitrogen N2, and a spray device 64, for example for toluene spraying.
  • the housing 60 contains an electrolyte 66, the upper mirror 67 of which is indicated in the figure. Above the electrolyte 66 is a gas space 68, which can be filled with nitrogen, for example.
  • the housing 60 is provided on the inside with electrical insulation 69 which is resistant to the electrolyte 66.
  • This insulation 69 can preferably consist of a chemically resistant insulating layer, for example phenolic resin.
  • a shield 71 for field shielding can consist, for example, of hard tissue.
  • a shield 72 is provided between the active part of the conveyor track 2 and the drive 17 for the shaking chutes 3 to 5.
  • the anodes 6 to 9 and optionally the shaking chutes 3 to 5 can be replaced in a simple manner.
  • the goods transport device 40 is accessible by removing the side wall 57.
  • the shopping baskets 41 to 45 are shown within the goods transport device 40.
  • the exit lock 76 is provided with a drive, of which only the drive shaft 78 is indicated.
  • a metering device 120 for the bulk material 10 may be provided, which consists of electrically non-conductive material and feeds the bulk material 10 supplied from the shaking chute 5 to the baskets 44 at intervals.
  • This metering device prevents the bulk goods 10 from jamming between the shopping baskets 41 to 45 and the shield 71. It also causes the lower shaking chute 5 and the anodes 8 and 9 to be electrically isolated from electrically conductive parts of the goods transport device.
  • This metering device can preferably be coupled to the conveyor drive 47 of the goods transport device 40.
  • a conveyor belt 74 for the emptying is indicated by dashed lines, which transports the finished bulk goods 10 to an export lock 76, which is provided with a drive.
  • the width of the inlet lock 30 corresponds approximately to the width B of the shaker chutes 3 to 5, so that the entire width of the shaker chutes can be fed through the inlet lock 30.
  • a drive motor 19 for the slide drive 17 is arranged, which can be coupled directly to one of the two drive shafts 20 and to the second drive shaft, for example by means of a toothed belt or a drive chain.
  • the two eccentrics 21 and the drivers 22 associated with them of the slide drives 17 and 18 illustrates.
  • Anode connections 81 to 86 are shown in the side walls and cathode connections 87 and 88 are shown in the drive housing 80.
  • the anode connections 81 to 86 and cathode connections 87 and 88 are electrically insulated from the housing 60 and additionally chemically resistant to the electrolyte 66.
  • a support frame 90 the chemical and electrical insulation of which are not shown for simplicity, can be designed and mounted below a shaking slide, for example 4, in such a way that it provides a mechanical holder and at the same time a closed power supply system for the shaker slide 4 forms.
  • It consists essentially of two limiting strips 92 and 93 and six tubes 94 to 99.
  • the two laterally attached, for example welded-on limiting strips 92 and 93 are connected to one another by tubes 94 to 99, preferably square tubes, which can be made of steel, for example, and one contain electrically conductive core.
  • They are attached to the shaker slide 4 by a plurality of, for example six, contact screws 100, which are only indicated by crosses in FIG. These contact screws 100 simultaneously form a mechanical connection and a power supply.
  • the cathode connections 87 and 88 are only indicated schematically in the figure. They are electrically insulated from the drivers 22 of the eccentric drives 17 and 18.
  • one of the contact screws 100 which are preferably provided with an enlarged head and can, for example, be made of copper or brass, is in the track 104, which is preferably made of chemically resistant hard tissue, in the embodiment of an electrical contacting of the shaker slide 4 with the support frame 90 can exist, used and screwed to a power supply 106 which passes through the entire support frame 90 and electrically against the support frame is isolated.
  • This power supply is electrically insulated from the support frame 90, for example by means of insulation 108, which can preferably consist of a potting compound made of self-hardening plastic.
  • a seal 110 is inserted between the tube 94 of the support frame 90 and the shaker slide 4.
  • the raceway 104 of the shaker chute 4 is provided with a bearing 112 which serves to transmit the oscillating movement and can, for example, contain a spring element 114 made of steel, which is mounted in a bearing block 116 and provided with a coating of chemically resistant and electrically insulating material, which is not detailed is.
  • the spring element 114 is moved by the eccentric 21.
  • another bearing for example a ball bearing, can also be provided.
  • the shaking chutes 3 to 5 can each be provided with at least one step. Furthermore, it can be useful to use shaking chutes 3 to 5 with different inclinations over their length. The inclination can be greater, for example, at its start facing the cover 58 than at its end facing the cover 57. Furthermore, the inclination can be greater at the beginning and at the end than in the middle. With these embodiments, a jam of the bulk material 10 during its movement on the shaking chutes 3 to 5 can be avoided.
  • a device for the electrolytic deposition of aluminum on bulk material is provided.
  • the device according to the invention can also be used for electroless surface treatment, for example for cleaning, pickling or drying pourable goods. It is also suitable for the aftertreatment, for example for chromating, of already coated material.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Intermediate Stations On Conveyors (AREA)
EP89123785A 1989-12-22 1989-12-22 Dispositif de traitment de surface d'objets en vrac Withdrawn EP0433490A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP89123785A EP0433490A1 (fr) 1989-12-22 1989-12-22 Dispositif de traitment de surface d'objets en vrac
US07/623,213 US5131996A (en) 1989-12-22 1990-12-06 Surface-treating apparatus for agitatable material
JP2412246A JPH04143300A (ja) 1989-12-22 1990-12-19 バルクハンドリング可能な物品の表面処理装置
CA002032886A CA2032886A1 (fr) 1989-12-22 1990-12-20 Appareil de traitement superficiel, pour materiau agitable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89123785A EP0433490A1 (fr) 1989-12-22 1989-12-22 Dispositif de traitment de surface d'objets en vrac

Publications (1)

Publication Number Publication Date
EP0433490A1 true EP0433490A1 (fr) 1991-06-26

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ID=8202267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123785A Withdrawn EP0433490A1 (fr) 1989-12-22 1989-12-22 Dispositif de traitment de surface d'objets en vrac

Country Status (4)

Country Link
US (1) US5131996A (fr)
EP (1) EP0433490A1 (fr)
JP (1) JPH04143300A (fr)
CA (1) CA2032886A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5494197A (en) * 1994-07-27 1996-02-27 Saranac Tank, Inc. Material handling device for electroplating applications
JPH08325784A (ja) * 1995-05-30 1996-12-10 Teikoku Ion Kk めっき方法及びめっき装置
US6230875B1 (en) 1999-05-14 2001-05-15 Allan M. Carlyle Synchronized vibrator conveyor
US6308835B1 (en) * 1999-11-12 2001-10-30 Darvin Wade Continuous self-cleaning sluice
US20090078615A1 (en) * 2007-09-20 2009-03-26 Chuck Rainwater Sluice assembly for separating heavy particles from slurry
JP4998578B2 (ja) * 2010-03-29 2012-08-15 Ｔｄｋ株式会社 めっき装置、めっき方法およびチップ型電子部品の製造方法
US9945045B2 (en) * 2015-12-02 2018-04-17 Ashwin-Ushas Corporation, Inc. Electrochemical deposition apparatus and methods of using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2145744A5 (en) * 1971-07-09 1973-02-23 Cogepris Tumble-treatment drum - with automatic recycling of treatment agent after coating process
DE2719641A1 (de) * 1977-05-03 1978-11-09 Montblanc Simplo Gmbh Galvanisierbad zum abscheiden von metallen, z.b. aluminium in aprotischen loesungsmitteln und inerter atmosphaere

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US205012A (en) * 1878-06-18 Improvement in grain-driers
US139556A (en) * 1873-06-03 Improvement in apparatus for separating, concentrating, and amalgamating ores
US3224553A (en) * 1963-02-27 1965-12-21 Milford A Campbell Vibratory work feeding and orienting unit
US3420766A (en) * 1965-03-10 1969-01-07 Irving L Michelson Automatic electroplating and washing apparatus
US3826355A (en) * 1971-03-03 1974-07-30 Buehler Corp Continuous plating system
US4670120A (en) * 1985-07-09 1987-06-02 Siemens Aktiengesellschaft Apparatus for electrolytic surface treatment of bulk goods
DE3907185A1 (de) * 1989-03-06 1990-09-13 Siemens Ag Einrichtung zum transport von schuettfaehigem gut mit einem schwingfoerderer, der in eine fluessigkeit eintaucht

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2145744A5 (en) * 1971-07-09 1973-02-23 Cogepris Tumble-treatment drum - with automatic recycling of treatment agent after coating process
DE2719641A1 (de) * 1977-05-03 1978-11-09 Montblanc Simplo Gmbh Galvanisierbad zum abscheiden von metallen, z.b. aluminium in aprotischen loesungsmitteln und inerter atmosphaere

Also Published As

Publication number Publication date
US5131996A (en) 1992-07-21
CA2032886A1 (fr) 1991-06-23
JPH04143300A (ja) 1992-05-18

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