EP0346580B1 - Procédé et dispositif pour fabriquer des articles métallisés filiformes - Google Patents

Procédé et dispositif pour fabriquer des articles métallisés filiformes Download PDF

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Publication number
EP0346580B1
EP0346580B1 EP89106321A EP89106321A EP0346580B1 EP 0346580 B1 EP0346580 B1 EP 0346580B1 EP 89106321 A EP89106321 A EP 89106321A EP 89106321 A EP89106321 A EP 89106321A EP 0346580 B1 EP0346580 B1 EP 0346580B1
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EP
European Patent Office
Prior art keywords
chambers
wire
drum
wire shapes
line
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 - Lifetime
Application number
EP89106321A
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German (de)
English (en)
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EP0346580A1 (fr
Inventor
Rolf Voegele
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.)
Louis Leitz Firma
Original Assignee
Louis Leitz Firma
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 Louis Leitz Firma filed Critical Louis Leitz Firma
Priority to AT89106321T priority Critical patent/ATE80419T1/de
Publication of EP0346580A1 publication Critical patent/EP0346580A1/fr
Application granted granted Critical
Publication of EP0346580B1 publication Critical patent/EP0346580B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1635—Composition of the substrate
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1619—Apparatus for electroless plating
    • 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
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • the invention relates to a method and a device for the production of metallized, in particular electroless or galvanically nickel-plated, bow-shaped and hook-shaped bent wire parts of the type specified in the preamble of claims 1 and 9.
  • Bracket-shaped and hook-like wire shaped parts of this type which are intended, for example, as folding brackets for use in letter folder mechanisms, become more compressible and mutually separable in the course of their manufacturing process, with the formation of a continuous conveyor line in nested and mutually touching, in the conveying direction up to the mutual abutment of their cranked bow webs Order strung together.
  • the drum nickel plating which is also known, is not suitable for such complicated shaped wire parts because they get caught in one another in the course of the drum movement, so that their subsequent separation is not possible without complicated handling processes.
  • the shaped wire parts can bend during the nickel plating process due to mechanical influences and thereby become unusable for their intended purpose.
  • the invention has for its object to improve the method and the device of the type specified in such a way that a simplification of the handling processes and a reduction in the space required in the course of the metallization process is made possible.
  • the term “metallization” is to be understood primarily to mean the galvanic or electroless chemical deposition of metal coatings on shaped wire parts, and in particular nickel plating.
  • the solution according to the invention is based on the idea that, after the cutting and bending process, the wire blank parts are put together to form a conveyor train with an easily separable order and that this order is maintained in the course of the metallization process.
  • individual strand sections with a predetermined number of shaped wire parts are continuously cut off or tapped from the conveyor strand and, in the form of the strand section, immersed in packs in at least one bath provided for carrying out the metallization process and moved through the bath.
  • the individual strand sections can then be put together again to form a continuous conveyor strand.
  • the shaped wire parts within the strand section are advantageously brought into electrical contact with at least one electrode while maintaining their order directly or indirectly via adjacent shaped wire parts.
  • the shaped wire parts are displaced and / or tilted to a limited extent during the metallization process while maintaining their order within each strand section and, if necessary, while maintaining electrical contact with the contact electrode.
  • the strand sections are captured in the compressed order, preferably in the area of the stirrup webs, by hand or with a handling device when they are separated from the continuous conveyor strand and / or when they are reassembled into the continuous conveyor strand.
  • the strand sections are inserted into chambers made of electrically insulating material with walls perforated for the passage of liquid and inside the chambers with at least one guide rail which expediently extends over the length of the strand section and which can also be designed as an electrode Brought in contact.
  • a plurality of chambers arranged in spatial association with one another, each receiving one of the strand sections, are immersed together in the bath and moved through the bath.
  • the chambers are expediently arranged on the circumference of a drum and moved through the bath while rotating about the drum axis.
  • a plurality of drums are arranged in the circumferential direction and in the longitudinal direction on a drum which can be immersed in a metallization bath and rotatable about its axis therein Chambers are provided for receiving a strand section which is separated from the conveyor strand and contains a number of shaped wire parts in the order of the conveyor strand.
  • at least one contact electrode is arranged in the chambers in constant contact with the inserted strand sections.
  • the inner dimensions or inner contour of the chambers is adapted to the dimensions of the strand section.
  • the chamber walls made of an insulating material have openings for the passage of liquid.
  • the guide rails or contact electrodes advantageously have the shape of elongated ribs, rails or strips, which preferably lie in the longitudinal direction of the strand section against the web area of the shaped wire parts.
  • two or more guide rails or same-pole contact electrodes can also be arranged on opposite side walls in such a way that they bear against the web area of the shaped wire parts.
  • a plurality of flat contact electrodes of the same polarity can be arranged on the inside of the chamber walls, against which the wire shaped parts temporarily come to rest when the chamber is moved through the electroplating bath.
  • the contact electrodes arranged in the interior of the chamber are connected as the cathode and at least one electrode arranged outside the chambers in the electroplating bath is connected as the anode.
  • the strand sections are preferably aligned in the direction of rotation of the drum in the chambers. In principle, however, it is also possible to arrange the strand sections in the chambers in an axis-parallel orientation to the drum.
  • Each strand section advantageously comprises between 10 and 20, advantageously between 12 and 16 shaped wire parts. If with a drum diameter of approx. 40 cm and a drum length of approx. 100 cm a total of about 70 chambers on the drum surface, it follows that each drum contains a total of approx. 1000 wire molded parts in easily manageable, ordered strand sections, which can easily be put together again to form a coherent conveyor strand.
  • the wire molded part 10 shown in FIG. 1 is designed as a folding bracket for use in a letter folder mechanism.
  • the folding bracket 10 has two legs 12 oriented parallel to one another, which are connected to one another at one end by a vertical web 14 and are curved in a hook shape at their free end 16.
  • the web 14 has a crank 18, while in the front ends of the legs 12 blind holes 20 are arranged for receiving the end pins, not shown, line-up pins of the file mechanism.
  • the folding brackets steel wire is drawn off from a coil, cut to length in a cutting device and brought into the shape shown in FIG. 1 in a bending station. Subsequently, the blind holes 20 are made and the blanks finished in this way are transferred to a belt conveyor to form a conveyor line.
  • the legs 12 are aligned with their hook-shaped ends 16 in the conveying direction and are nested with one another with a lateral offset such that they can be compressed up to the mutual abutment of their cranked webs and can be pushed apart in the conveying direction for parting and removing individual strand sections 24 without interlocking .
  • the strand sections 24 can be put together again relatively easily to form a continuous conveyor strand. This knowledge is used in the processing steps described below.
  • bracket blanks arriving in the conveyor line 22 from the bending and drilling station must be galvanically (or electrolessly electrolessly) nickel-plated before they are fed to an assembly station to complete the folder mechanism.
  • strand sections 24 are tapped from the incoming conveyor strand 22 and gripped by hand or with an automatic handling device in the web area of the stirrups and inserted in packages 30 into chambers 30 of an electroplating drum 32 while maintaining order within the strand.
  • the chambers 30 are dimensioned such that the brackets can move relative to one another in a loosened order in the strand direction (cf. FIG. 3).
  • the strips 34 are inside the chamber 30 which, due to their shape and arrangement, ensure the guidance and order of the stirrup package regardless of the rotational position of the chamber 30.
  • the strips 34 In the case of electroless nickel plating, the strips 34 only have a guiding and holding function.
  • the guide strips are at the same time designed as contact electrodes so that a plurality of stirrups 10 of the package 24 are in direct electrical contact with them and the remaining stirrups of the package are electrically connected to them indirectly via the contacting stirrups. This can also be achieved in that several electrodes of the same polarity are arranged on the inner surfaces of the chamber walls distributed over the chamber. In the exemplary embodiments shown in FIGS. 3 to 5, two elongated guide strips or electrodes 34 are arranged in the bottom and top area of the chamber 30, the surface of which, in particular, abuts against the web areas 14 of the bracket.
  • the chambers are equipped with the stirrup packs 24 via a radially outwardly facing charging opening 36, preferably in the arrangement shown in FIGS. 4a and b, in which the strand sections in the individual chambers are aligned in the direction of rotation of the drum.
  • the folding brackets can therefore move against one another in the longitudinal direction, so that undesired shadowing during the galvanizing process is largely avoided.
  • the walls 38 of the chambers which are made of insulating material, have openings 40 for the passage of liquid.
  • a closing cover 42 on the individual chambers prevents the bracket 10 from rotating the drum 32 can fall out through the loading opening 36.
  • a shell which extends over the loading openings and in which the drum 32 is rotatably arranged can also be provided in the lower region of the drum.
  • the contact electrodes 34 within the chambers 30 are formed as cathodes during the nickel plating process, while the anode 44 is arranged outside the drum in the electroplating bath. In the area of the anode, there are nickel pellets, not shown, in contact with the anode, which ensure that the nickel which is deposited on the wire molded parts from the nickel bath 46 is continuously fed into the bath.
  • the nickel-plated wire molded parts can be removed from the chambers 30 in packages and, while maintaining the strand arrangement, reassembled to form a continuous conveyor strand and can be fed in this form to the subsequent assembly stations.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Wire Processing (AREA)

Claims (22)

1. - Procédé pour fabriquer des articles filiformes métallisés, en particulier nickelés sans courant externe ou par électrolyse, courbés en étriers et en crochets et destinés de préférence à l'utilisation dans des mécanismes de classeurs, qui, au cours de leur processus de fabrication, sont mis à la file, avec formation d'au moins une ligne de transport continue, de manière qu'ils sont imbriqués les uns dans les autres et se touchent mutuellement, dans un ordre permettant leur compression dans la direction de transport jusqu'à ce qu'ils viennent mutuellement en butée avec leurs barrettes coudées et, inversement, leur séparation, caractérisé en ce que des sections de ligne (24) individuelles avec une pluralité d'article filiformes (10) sont séparées continuellement de la ligne de transport (22), plongées sous cette forme, par paquets, dans au moins un bain de métallisation (46) prévu pour la réalisation du processus de métallisation et déplacées dans ledit bain.
2. - Procédé selon la revendication 1, caractérisé en ce que, dans le cas de la métallisation électrolytique, les articles filiformes (10) à l'intérieur de la section de ligne (24), tout en conservant leur ordre, sont mis en contact électrique avec au moins une électrode par contact (34), et ce de manière directe ou de manière indirecte par l'intermédiaire des articles filiformes voisins.
3. - Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que, pendant le processus de métallisation et avec conservation de leur ordre, les articles filiformes (10) sont déplacés et/ou basculés de manière limitée les uns par rapport aux autres à l'intérieur de chaque section de ligne (24).
4. - Procédé selon l'une des revendications 1 à 3, caractérisé en ce que, après le processus de métallisation, les différentes sections de ligne (24) sont à nouveau assemblées en une ligne de transport continue (22).
5. - Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, lors de la séparation de la ligne de transport continue (22) et/ou lors du réassemblage en une ligne de transport continue, les sections de ligne (24) sont saisies, dans un ordre comprime, à la main ou au moyen d'un appareil de maniement, de préférence dans la région des barrettes d'étriers (14).
6. - Procédé selon l'une des revendications 1 à 5, caractérisé en ce que les sections de ligne (24) sont placées dans des chambres (30) constituées d'un matériau électriquement isolant et présentant des parois ajourées (38) pour le passage du liquide.
7. - Procédé selon la revendication 6, caractérisé en ce qu'à l'intérieur des chambres (30), au moins un rail de guidage ou une électrode par contact (34) qui s'étend sur la longueur de la section de ligne (24) est mis en contact avec les articles filiformes (10).
8. - Procédé selon l'une des revendications 6 ou 7, caractérisé en ce qu'une pluralité de chambres (30) recevant chacune une section de ligne (24) et disposées en association spatiale les unes avec les autres sont plongées ensemble dans le bain (46) et déplacées dans ledit bain.
9. - Procédé selon la revendication 8, caractérisé en ce que les chambres (30) réparties sur la surface d'un tambour (32) sont passées par le bain (46) par rotation autour de l'axe du tambour.
10. - Procédé pour fabriquer des articles filiformes métallisés, en particulier nickelés sans courant externe ou par électrolyse, courbés en étriers et en crochets et destinés de préférence à l'utilisation dans des mécanismes de classeurs, qui, au cours de leur processus de fabrication, sont mis à la file, avec formation d'au moins une ligne de transport continue, de manière qu'ils sont imbriqués les uns dans les autres et se touchent mutuellement, dans un ordre permettant leur compression dans la direction de transport jusqu'à ce qu'ils viennent mutuellement en butée avec leurs barrettes coudées et, inversement, leur séparation, caractérisé en ce que la ligne de transport (22) est déplacée en continu dans au moins un bain prévu pour la réalisation du processus de métallisation.
11. - Dispositif pour la fabrication d'articles filiformes, de préférence nickelés par électrolyse ou sans courant externe, courbés en étriers et en crochets et destinés à l'utilisation dans des mécanismes de classeurs, comprenant au moins un transporteur pour le transport des articles filiformes en une ligne de transport continue dans laquelle les articles filiformes en contact les uns avec les autres sont mis à la file dans un ordre permettant leur compression dans la direction de transport jusqu'à ce que leurs barrettes d'étriers viennent en contact les unes avec les autres et, inversement, leur séparation, caractérisé par une pluralité de chambres (30) qui sont disposées sur un tambour (32) pouvant être plongé dans un bain de métallisation (46) et tourner autour de son axe à l'intérieur de celui-ci, et destinées à recevoir chacune une section de ligne (24) séparée de la ligne de transport et contenant une pluralité d'articles filiformes (10) dans l'ordre de la ligne de transport (22), dont les dimensions intérieures et respectivement le contour intérieur sont adaptés aux dimensions de la section de ligne (24), dont les parois (38) constituées d'un matériau isolant présentent des ajours (40) pour le passage du liquide et dans lesquelles est disposé au moins une électrode par contact (34), ou rail de guidage, en contact avec la section de ligne (24) mise en place.
12. - Dispositif selon la revendication 11, caractérisé en ce que, à l'intérieur des chambres (30), les articles filiformes (10) constituant la section de ligne (24) peuvent être déplacés et/ou basculés de manière limitée les uns par rapport aux autres tout en conservant l'ordre.
13. - Dispositif selon l'une des revendications 11 ou 12, caractérisé en ce que les électrodes par contact (34) ou rails de guidage présentent la forme de nervures, rails ou baguettes allongés et qu'elles sont appliquées, dans la direction longitudinale des sections de ligne (24), contre la région de la barrette (14) des articles filiformes (10).
14. - Dispositif selon la revendication 13, caractérisé en ce que, à l'intérieur des chambres, deux électrodes par contact (34) ou rails de guidage allongés, appliqués contre la région de la barrette des articles filiformes, sont prévus sur des parois latérales (38, 42) opposées.
15. - Dispositif selon l'une des revendications 11 à 14, caractérisé en ce que plusieurs électrodes par contact homopolaires de grande surface sont disposées sur la face intérieure des parois (38) des chambres.
16. - Dispositif selon l'une des revendications 11 à 15, caractérisé en ce que les sections de ligne (24) sont alignées dans les chambres (30) dans la direction circonférentielle du tambour (32).
17. - Dispositif selon l'une des revendications 11 à 16, caractérisé en ce que les sections de ligne (24) sont alignées dans les chambres (30) parallèlement à l'axe du tambour (32).
18. - Dispositif selon l'une des revendications 11 à 17, caractérisé en ce que, pour un diamètre du tambour d'environ 40 cm et une longueur du tambour d'environ 100 cm, 70 chambres (30) au total sont réparties sur la surface du tambour.
19. - Dispositif selon l'une des revendications 11 à 18, caractérisé en ce que les chambres (30) présentent une ouverture de chargement (36) pouvant être fermée au moyen d'un couvercle de fermeture (42) conformé de préférence en couvercle rabattant.
20. - Dispositif selon l'une des revendications 11 à 19, caractérisé en ce qu'une section de ligne (24) contient 10 à 20, de préférence 12 à 16 articles filiformes (12).
21. - Dispositif selon l'une des revendications 12 à 20, caractérisé en ce que l'électrode par contact (34) disposée à l'intérieur de la chambre est montée en tant que cathode, et qu'au moins une électrode (44) disposée à l'extérieur de la chambre, dans le bain de métallisation, est montée en tant qu'anode.
22. - Dispositif selon l'une des revendications 11 à 21, caractérisé en ce que les chambres (30) comportent des ouvertures de chargement (36) radialement ouvertes vers l'extérieur, et que le tambour (32) est placé, avec la partie latérale et inférieure de son enveloppe, de manière tournante dans une cuvette qui obture les ouvertures de chargement (36).
EP89106321A 1988-06-16 1989-04-10 Procédé et dispositif pour fabriquer des articles métallisés filiformes Expired - Lifetime EP0346580B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106321T ATE80419T1 (de) 1988-06-16 1989-04-10 Verfahren und vorrichtung zum herstellen von metallisierten drahtformteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820516 1988-06-16
DE3820516A DE3820516A1 (de) 1988-06-16 1988-06-16 Verfahren und vorrichtung zum herstellen von metallisierten drahtformteilen

Publications (2)

Publication Number Publication Date
EP0346580A1 EP0346580A1 (fr) 1989-12-20
EP0346580B1 true EP0346580B1 (fr) 1992-09-09

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EP89106321A Expired - Lifetime EP0346580B1 (fr) 1988-06-16 1989-04-10 Procédé et dispositif pour fabriquer des articles métallisés filiformes

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EP (1) EP0346580B1 (fr)
AT (1) ATE80419T1 (fr)
DE (2) DE3820516A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619822C2 (de) * 1996-05-16 1998-04-23 Elba Buerosysteme Erich Kraut Aufreihvorrichtung für gelochtes Papiergut o. dgl. und Verfahren zu ihrer Herstellung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1227036A (fr) * 1969-02-26 1971-03-31

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DE3820516A1 (de) 1989-12-21
EP0346580A1 (fr) 1989-12-20
ATE80419T1 (de) 1992-09-15
DE58902236D1 (de) 1992-10-15

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