EP0424590A1 - Electroplating apparatus - Google Patents

Electroplating apparatus Download PDF

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Publication number
EP0424590A1
EP0424590A1 EP89810794A EP89810794A EP0424590A1 EP 0424590 A1 EP0424590 A1 EP 0424590A1 EP 89810794 A EP89810794 A EP 89810794A EP 89810794 A EP89810794 A EP 89810794A EP 0424590 A1 EP0424590 A1 EP 0424590A1
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EP
European Patent Office
Prior art keywords
electroplating apparatus
electromagnet
rod
vibrator
support
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Withdrawn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
EP89810794A
Other languages
German (de)
French (fr)
Inventor
Jean-Marc Barbier
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.)
Riobeer AG
Original Assignee
Elga SA
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 Elga SA filed Critical Elga SA
Priority to EP89810794A priority Critical patent/EP0424590A1/en
Priority to JP2284121A priority patent/JPH03257197A/en
Priority to US07/601,369 priority patent/US5124016A/en
Publication of EP0424590A1 publication Critical patent/EP0424590A1/en
Withdrawn legal-status Critical Current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
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/10—Agitating of electrolytes; Moving of racks
    • 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

Definitions

  • the present invention relates to an electroplating apparatus, consisting of a rod connecting a vibrator to a basket, the vibrator each time comprising at least one base plate, an electromagnet, a vibrating plate and a support means, the basket being itself connected to the rod by spacers.
  • the first problem is that of the air gap between the pole pieces of the electromagnet which must be adjusted periodically. In known devices this adjustment is delicate, long, and therefore expensive. It involves the disassembly of the springs connecting the base plate and the vibrating plate, then the manipulation in several stages of a lardon blocking a support piece connecting the base plate to the electromagnet. This manipulation is all the more delicate since the air gap of 0.35 mm between the pole pieces must be strictly uniform. The known device therefore requires the operator to proceed by successive trial and error, until the required uniformity is achieved. Once the adjustment has been made, the springs mentioned above must be reassembled.
  • the second problem lies in the mode of transmission of cathode current. It is generally provided by a plug of very small size arranged under the vibrating plate and fitting into a member to which are connected conductive son. These threads, of which the opposite ends are connected to the spacers are placed in the hollow of the rod connecting the vibrator to the basket. This rod therefore has the shape of a tube.
  • the current transmission plug breaks easily when the basket has to be dismantled, for example with a view to adjusting the air gap.
  • the device is such that it considerably limits the field of use of the device, since the intensity of the cathode current must not exceed ten amperes.
  • the device's suspension device that is to say by the hook. It is indeed a question of eliminating the transfer to the hook of the vibrations of the vibrator or at least of almost all of these.
  • the hook is connected axially to the base plate.
  • the fourth problem posed by known devices is that of the sealing of the vibrator housing.
  • the envelope or the housing of the vibrator is made of aliuminium.
  • the housing is aimed laterally in particular on an upper closure plate and on the base plate.
  • the contact of the screws with the aluminum of the housing very quickly becomes the seat of redox phenomena.
  • the corrosion which is the consequence will make the sealing of the case very quickly random.
  • the device for mounting the electromagnet and adjusting the air gap will be exposed in support of FIGS. 1, 2, 3 and 4.
  • This support consists of a plate 27 and a threaded rod 28. It has countersunk holes 29.
  • the support is fixed to the upper base of the electromagnet by means of countersunk screws 30 passing through the countersunk holes 29, the threaded rod 28 being directed vertically upwards.
  • the axes of the threaded rod 28 of the electromagnet 25 and of the base plate 24 all have the same support, that is to say the axis of symmetry 50 of the device 1.
  • the support block 26 / electromagnet 25 is screwed by the threaded rod 28 in a corresponding central thread of the base plate 24.
  • the air gap 35 is the space between the lower base of the electromagnet 25 and the vibrating plate 23.
  • the latter therefore constitutes at the same time a pole piece.
  • the value of the air gap that is 0.35 mm in the field of application, can be very easily adjusted by maneuvering slightly when opening or closing the electromagnet block 25 / support 26. As soon as the gauge measurement will show that the exact value of the air gap is obtained, the electromagnet 26 is immobilized by the action of a lardon not shown on the screw 28.
  • This lardon can be for example a threaded element aimed radially in the base plate.
  • the electromagnet can have the known parallelepiped conformation.
  • connection plug screwed into the vibrating plate and the conductive wires placed in a tube-shaped rod carrying the basket as provided in the known devices are eliminated.
  • the current is brought directly from the support means, that is to say from the hook 21 (to which we will return later) to the vibrating plate 23 thanks to two conductive wires 36 screwed onto the plate vibrating 23, each time by a terminal, shown but not identified, by means of a screw 37.
  • These two wires 36 are in contact with the end portions 22 of the hook 21 by means of lugs 38.
  • the current is then transmitted to a solid metal support piece 11, then to the rod 2 which is also a solid metal piece.
  • the support piece and the rod play the role of conductor, the current being brought to the spacers 4 provided with pins 5 driven into the recesses 6 of the rod, and consequently to the hollow cathode screws 32.
  • the bottom 34 of the basket 3 is locked against the spacers 4 by means of plastic screws 33.
  • Figs. 5 and 6 show in detail an embodiment of a rod 2 and of the support 11.
  • the vibrating plate 23 is pressed against the face 17 of the support piece 11 and screwed onto it by means of three screw 16 (fig. 1 and 6).
  • the rod 2 and the support piece 11, intended to be assembled, have two complementary shoulders 8 and 9 on the one hand (fig. 5), 18 and 19 on the other hand (fig. 6).
  • the attachment of the rod 2 and the support 11 is obtained by two elements: firstly a fixing and centering element comprising a partially threaded rod 14 blocked by a nut, shown but not identified, and a socket 15 in which is housed the unthreaded part of the rod (fig. 1); then a blocking element comprising a screw 12 and an operating handle 13.
  • the cathodic contact is ensured directly by the rod 2 and the spacers 4.
  • the cathodic current is brought to the rod by means of a connection of the end portions 22 of the hook 21 to the vibrating plate 23 via the wires 36.
  • This construction avoids all risks of breakage of connection plug, while remaining light, the support 11 and the rod 2 in which it is possible, moreover, to make recesses 7 (fig. 5), preferably being made of aluminum.
  • the field of application of the electroplating apparatus according to the invention is significantly more extensive, since the current supply device described allows the transport of cathode currents of the order of 100 amps.
  • Another particular feature of the apparatus consists in providing a support means 21 connected laterally to the vibrator.
  • this support means is visible in fig. 2: it constitutes a hook and is in the form of an inverted V, the branches of which extend over a certain length parallel to the axis of symmetry of the V, then are bent inwards towards the axis of symmetry and perpendicular to it latest.
  • the curved parts, called terminal parts, are marked with 22; they end in a threaded part 39.
  • the hook is connected to the vibrator by means of vibration absorption means, that is to say damping means, so that the hook, insulated from vibrations, remains almost immobile during the working phase.
  • vibration absorption means are rubber grommets.
  • end portions 22 of the hook are connected to the vibrator at two diametrically opposite points and that the grommets are engaged on the end portion 22; they are thus arranged between openings not marked, made radially in the base plate 24 and said end portions 22.
  • a known device of nut / locknut and washers ensures the locking of the hook and the terminal 38 of the electric wire 36, by tightening against a bead of the grommet.
  • the damping means are arranged outside in the lower zone of the parallel branches of the hook 21, that is to say near the end portions 22 which are then, in this variant, fixed directly to the base plate 24, or are on the contrary arranged in the upper zone of said parallel branches.
  • These means consist of springs acting by compression or of elastic metal discs forming a bellows.
  • the envelope of the vibrator finally constitutes a final feature of the electroplating apparatus according to the invention.
  • the vibrator is "covered" with a plastic envelope, adventurously made of polypropylene.
  • the protection consists of an upper casing 45 and a lower casing 46.
  • the interior parts of the vibrator are protected from electrolyte projections by means of sealing means 43,44, preferably seals O-rings arranged between the envelopes and the base plate 24.
  • the envelopes are screwed to the base plate by means of stainless steel screws 47,48.
  • the means according to the invention provide rational and inexpensive solutions to the problem of efficiency and reliability of electroplating devices.
  • the field of use of the devices according to the invention is considerably increased.

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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)

Abstract

The gap (35) of the electroplating apparatus, consisting of a shaft (2) connecting a vibrator to a basket (3), the vibrator each time comprising at least one base plate (24), an electromagnet (25), a vibrating plate (23) and a means of suppport, the basket itself being connected to the shaft by spacers (4), is formed directly by the space between the lower base of the electromagnet (25) and the upper face of the base plate (23). The adjustment of the gap is performed by actuating the threaded shaft (28) without dismantling the springs (31); the gap is automatically uniform over the whole surface of the core. …<??>The electroplating apparatus is further characterised by the fact that the transport of the cathode current is ensured directly by the shaft (2) which is a solid piece of metal, optionally with cavities (7), preferably made of aluminium. The means of suspension (21) comprises two arms insulated from the vibrations. The vibrator casing is made of polypropylene, which allows good leakproofing and avoids any risk of corrosion. …<IMAGE>…

Description

La présente invention a pour objet un appareil de galvanoplastie, constitué d'une tige reliant un vibreur à un panier, le vibreur comprenant chaque fois au moins une plaque de base, un électro-aimant, une plaque vibrante et un moyen de soutien, le panier étant lui-­même relié à la tige par des entretoises.The present invention relates to an electroplating apparatus, consisting of a rod connecting a vibrator to a basket, the vibrator each time comprising at least one base plate, an electromagnet, a vibrating plate and a support means, the basket being itself connected to the rod by spacers.

Les appareils connus de ce genre font l'objet principa­lement de deux critiques, l'une portant sur le rendement qui devient très vite médiocre après une période d'uti­lisation relativement courte, l'autre sur leur faible fiabilité.Known devices of this kind are mainly the subject of two criticisms, one relating to the yield which very quickly becomes mediocre after a relatively short period of use, the other to their low reliability.

Les causes du fonctionnement non satisfaisant des appareils connus sont au moins au nombre de quatre: Le premier problème est celui de l'entrefer entre les pièces polaires de l'électro-aimant qu'il faut adjuster périodiquement. Dans les appareils connus cette adjusta­ge est délicat, long, et donc coûteux. Il implique le démontage des ressorts reliant la plaque de base et la plaque vibrante, puis la manipulation en plusieures éta­pes d'un lardon de blocage d'une pièce d'appui reliant la plaque de base à l'électro-aimant. Cette manipulation est d'autant plus délicate que l'entrefer de 0,35 mm entre les pièces polaires doit être rigoureusement uni­forme. Le dispositif connu oblige donc l'opérateur à procéder par tâtonnements successifs, jusqu'à ce que l'uniformité requise soit atteinte. Le réglage effectué, les ressorts mentionnés plus haut doivent être remontés.There are at least four reasons for the unsatisfactory functioning of known devices: The first problem is that of the air gap between the pole pieces of the electromagnet which must be adjusted periodically. In known devices this adjustment is delicate, long, and therefore expensive. It involves the disassembly of the springs connecting the base plate and the vibrating plate, then the manipulation in several stages of a lardon blocking a support piece connecting the base plate to the electromagnet. This manipulation is all the more delicate since the air gap of 0.35 mm between the pole pieces must be strictly uniform. The known device therefore requires the operator to proceed by successive trial and error, until the required uniformity is achieved. Once the adjustment has been made, the springs mentioned above must be reassembled.

Le deuxième problème réside dans le mode de transmission du courant cathodique. Il est en général assuré par une fiche de très faible dimension agencée sous la plaque vibrante et s'emboitant dans un organe auquel sont con­nectés des fils conducteur. Ces fils conducteurs, dont les bouts opposés sont connectés aux entretoises sont placés dans le creux de la tige reliant le vibreur au panier. Cette tige a donc la forme d'un tube. On a constaté d'une part, que la fiche de transmission du courant casse facilement lorsque le panier doit être démonté, par exemple en vue du réglage de l'entrefer. D'autre part, le dispositif est tel qu'il limite consi­dérablement le domaine d'utilisation de l'appareil, puisque l'intensité du courant cathodique ne doit pas dépasser une dizaine d'ampères.The second problem lies in the mode of transmission of cathode current. It is generally provided by a plug of very small size arranged under the vibrating plate and fitting into a member to which are connected conductive son. These threads, of which the opposite ends are connected to the spacers are placed in the hollow of the rod connecting the vibrator to the basket. This rod therefore has the shape of a tube. On the one hand, it has been found that the current transmission plug breaks easily when the basket has to be dismantled, for example with a view to adjusting the air gap. On the other hand, the device is such that it considerably limits the field of use of the device, since the intensity of the cathode current must not exceed ten amperes.

Le troisième point qui contribue au mauvais rendement et à empirer la faible fiabilité des appareils connus est fourni par le dispositif de suspension de l'appa­reil, c'est-à-dire par le crochet. Il s'agit en effet d'éliminer le transfert au crochet des vibrations du vibreur ou au moins de la quasi-totalité de celles-ci. Dans les dispositifs connus, le crochet est relié axia­lement à la plaque de base.The third point which contributes to the poor efficiency and to worsen the low reliability of known devices is provided by the device's suspension device, that is to say by the hook. It is indeed a question of eliminating the transfer to the hook of the vibrations of the vibrator or at least of almost all of these. In known devices, the hook is connected axially to the base plate.

Enfin, le quatrième problème que pose les appareils connus est celui de l'étanchéité du boîtier du vibreur. Dans les dispositifs connus, l'enveloppe ou le boitier du vibreur est en aliuminium. Le boîtier est visé laté­ralement notamment sur une plaque supérieure de fermetu­re et sur la plaque de base. Or, le contact des vis avec l'aluminium du boîtier devient très vite le siège de phénomènes rédox. La corrosion qui en est la conséquence rendra l'étanchéité du boitier très vite aléatoire.Finally, the fourth problem posed by known devices is that of the sealing of the vibrator housing. In known devices, the envelope or the housing of the vibrator is made of aliuminium. The housing is aimed laterally in particular on an upper closure plate and on the base plate. However, the contact of the screws with the aluminum of the housing very quickly becomes the seat of redox phenomena. The corrosion which is the consequence will make the sealing of the case very quickly random.

On comprend que les problèmes exposés sont reliés entre eux en ce sens que le résultat commun ou le but visé par la présente invention est de réaliser un appareil de galvanoplastie procurant un rendement optimal et dont la fiabilité soit à toute épreuve.It is understood that the problems exposed are interconnected in the sense that the common result or the aim aimed by the present invention is to produce an electroplating apparatus providing optimum performance and the reliability of which is foolproof.

Ce but est atteint selon l'invention grâce aux caracté­ ristiques des revendications principales 1 et 9 ainsi qu'aux caractéristiques des revendications dépendantes.This object is achieved according to the invention thanks to the character The main claims 1 and 9 as well as the features of the dependent claims.

On va décrire maintenant à titre d'exemples un mode de réalisation de l'appareil de galvanoplastie selon l'in­vention, à l'appui du dessin dans lequel

  • la fig. 1 est une vue d'ensemble en coupe partielle de l'appareil de galvanoplastie,
  • la fig. 2 est une coupe selon l'axe de II de la fig. 1,
  • les fig. 3 et 4 représentent le support de l'électro­aimant, et
  • les fig. 5 et 6 sont des représentations détaillées de la tige et de sa pièce d'appui.
An embodiment of the electroplating apparatus according to the invention will now be described by way of examples, using the drawing in which
  • fig. 1 is an overall view in partial section of the electroplating apparatus,
  • fig. 2 is a section along the axis of II in FIG. 1,
  • fig. 3 and 4 represent the support of the electromagnet, and
  • fig. 5 and 6 are detailed representations of the rod and its support piece.

Le dispositif de montage de l'électro-aimant et de ré­glage de l'entrefer sera exposé à l'appui des fig. 1, 2, 3 et 4.The device for mounting the electromagnet and adjusting the air gap will be exposed in support of FIGS. 1, 2, 3 and 4.

L'électro-aimant 25 et solidaire de la plaque de base 24 par intermédiaire d'un support 26 représenté aux fig. 3 et 4. Ce support est constitué d'une plaquette 27 et d'une tige filetée 28. Il comporte des trous fraisés 29. Le support est fixé sur la base supérieure de l'électro-­aimant au moyen de vis à tête fraisée 30 passant dans les trous fraisés 29, la tige filetée 28 étant dirigée verticalement vers le haut. Les axes de la tige filetée 28 de l'électro-aimant 25 et de la plaque de base 24 ont tous le même support, c'est-à-dire l'axe de symmétrie 50 de l'appareil 1.The electromagnet 25 and secured to the base plate 24 by means of a support 26 shown in FIGS. 3 and 4. This support consists of a plate 27 and a threaded rod 28. It has countersunk holes 29. The support is fixed to the upper base of the electromagnet by means of countersunk screws 30 passing through the countersunk holes 29, the threaded rod 28 being directed vertically upwards. The axes of the threaded rod 28 of the electromagnet 25 and of the base plate 24 all have the same support, that is to say the axis of symmetry 50 of the device 1.

Le bloc support 26/électro-aimant 25 est vissé par la tige filetée 28 dans un taraudage central correspondant de la plaque de base 24.The support block 26 / electromagnet 25 is screwed by the threaded rod 28 in a corresponding central thread of the base plate 24.

Selon l'invention, l'entrefer 35 est l'espace entre la base inférieure de l'électro-aimant 25 est de la plaque vibrante 23. Celle-ci constitue donc en même temps une pièce polaire.According to the invention, the air gap 35 is the space between the lower base of the electromagnet 25 and the vibrating plate 23. The latter therefore constitutes at the same time a pole piece.

La valeur de l'entrefer, soit 0,35 mm dans le domaine d'application, peut être réglée très facilement en manoeuvrant légèrement à l'ouverture ou à la fermeture le bloc électro-aimant 25/support 26. Dès que la jauge de mesure montrera que la valeur exacte de l'entrefer est obtenue, l'électro-aimant 26 est immobilisé grâce à l'action d'un lardon non représenté sur la vis 28. Ce lardon peut être par exemple un élément filetée visé radialement dans la plaque de base.The value of the air gap, that is 0.35 mm in the field of application, can be very easily adjusted by maneuvering slightly when opening or closing the electromagnet block 25 / support 26. As soon as the gauge measurement will show that the exact value of the air gap is obtained, the electromagnet 26 is immobilized by the action of a lardon not shown on the screw 28. This lardon can be for example a threaded element aimed radially in the base plate.

Le réglage se faisant par rotation au tour de l'axe 50, toute erreur de parallaxe est écartée. Ainsi, l'entre­fer de 0,35 mm sera automatiquement uniforme sous toute la surface de base du noyau de l'électro-aimant.The adjustment being made by rotation around the axis 50, any parallax error is eliminated. Thus, the air gap of 0.35 mm will be automatically uniform under the entire base surface of the electromagnet core.

On a observé, de plus, que les fréquences de réglage de l'entrefer sont considérablement diminuées. Cet avantage résulte de la bonne uniformité de l'entrefer. Par ail­leurs, même si un léger déréglage a lieu, les effets néfastes de celui-ci sont considérablement amoindris, c'est-à-dire que la baisse de rendement ne prend pas les proportions connues dans les appareils existant actuel­lement.It has also been observed that the frequencies of adjustment of the air gap are considerably reduced. This advantage results from the good uniformity of the air gap. Furthermore, even if a slight adjustment takes place, the harmful effects of it are considerably lessened, that is to say that the drop in yield does not take the proportions known in the devices currently existing.

De plus, on voit que le démontage des organes élastiques de rappel 31 reliant de façon connue la plaque vibrante 23 à la plaque de base 24 n'est plus nécessaire.In addition, it can be seen that the disassembly of the elastic return members 31 connecting the vibrating plate 23 to the base plate 24 in a known manner is no longer necessary.

L'électro-aimant peut avoir la conformation parallélépi­pédique connue. Dans une variante, non représentée, on choisira un électro-aimant à section circulaire, c'est-­à-dire en forme de cylindre dans le rendement est quel­ que peu supérieur.The electromagnet can have the known parallelepiped conformation. In a variant, not shown, we will choose an electromagnet with circular section, that is to say in the shape of a cylinder in the efficiency is what that little higher.

Une autre caractéristique de l'invention contribuant à optimiser le rendement de l'appareil de galvanoplastie est celle du mode de transfert du courant cathodique. En effet, la fiche de connexion vissée dans la plaque vibrante et les fils conducteurs placés dans une tige en forme de tube portant le panier tels qu'ils sont prévus dans les dispositifs connus sont supprimés.Another characteristic of the invention helping to optimize the efficiency of the electroplating apparatus is that of the mode of transfer of the cathode current. In fact, the connection plug screwed into the vibrating plate and the conductive wires placed in a tube-shaped rod carrying the basket as provided in the known devices are eliminated.

Tout d'abord, le courant est amené directement à partir du moyen de soutien, c'est-à-dire du crochet 21 (sur lequel on reviendra plus loin) à la plaque vibrante 23 grâce à deux fils conducteurs 36 vissés sur la plaque vibrante 23, chaque fois par une cosse, représentée mais non repèrée, au moyen d'une vis 37. Ces deux fils 36 sont en contact avec les parties terminales 22 du cro­chet 21 par l'intermédiaire de cosses 38.First of all, the current is brought directly from the support means, that is to say from the hook 21 (to which we will return later) to the vibrating plate 23 thanks to two conductive wires 36 screwed onto the plate vibrating 23, each time by a terminal, shown but not identified, by means of a screw 37. These two wires 36 are in contact with the end portions 22 of the hook 21 by means of lugs 38.

Le courant est transmis ensuite à une pièce d'appui mé­tallique pleine 11, puis à la tige 2 qui est, elle aussi, une pièce métallique pleine. La pièce d'appui et la tige jouent le rôle de conducteur, le courant étant amené vers les entretoises 4 pourvues de tenons 5 chassés dans des creusures 6 de la tige, et par conséquent aux vis cathodiques creuses 32. Le fond 34 du panier 3 est blo­qué contre les entretoises 4 au moyen de vis en plasti­que 33.The current is then transmitted to a solid metal support piece 11, then to the rod 2 which is also a solid metal piece. The support piece and the rod play the role of conductor, the current being brought to the spacers 4 provided with pins 5 driven into the recesses 6 of the rod, and consequently to the hollow cathode screws 32. The bottom 34 of the basket 3 is locked against the spacers 4 by means of plastic screws 33.

Les fig. 5 et 6 montrent en détail une forme d'exécution d'une tige 2 et de l'appui 11. La plaque vibrante 23 est appuyée contre la face 17 de la pièce d'appui 11 et vis­sée sur celle-ci au moyen de trois vis 16 (fig. 1 et 6). La tige 2 et la pièce d'appui 11, destinées à être as­semblées, présentent deux épaulements complémentaires 8 et 9 d'une part (fig. 5), 18 et 19 d'autre part (fig. 6).Figs. 5 and 6 show in detail an embodiment of a rod 2 and of the support 11. The vibrating plate 23 is pressed against the face 17 of the support piece 11 and screwed onto it by means of three screw 16 (fig. 1 and 6). The rod 2 and the support piece 11, intended to be assembled, have two complementary shoulders 8 and 9 on the one hand (fig. 5), 18 and 19 on the other hand (fig. 6).

Lors de l'assemblage, les faces 18,19,20 de la pièce d'appui 11 sont plaquées contre les faces respectives 10,9,8 de la tige 2.During assembly, the sides 18,19,20 of the part support 11 are pressed against the respective faces 10,9,8 of the rod 2.

La solidarisation de la tige 2 et de l'appui 11 est obtenue grâce à deux éléments: d'abord un élément de fixation et de centrage comprenant une tige partielle­ment filetée 14 bloquée par un écrou, représenté mais non repéré, et une douille 15 dans laquelle est logée la partie non filetée de la tige (fig. 1); ensuite un élé­ment de blocage comprenant une vis 12 et un poignée de manoeuvre 13.The attachment of the rod 2 and the support 11 is obtained by two elements: firstly a fixing and centering element comprising a partially threaded rod 14 blocked by a nut, shown but not identified, and a socket 15 in which is housed the unthreaded part of the rod (fig. 1); then a blocking element comprising a screw 12 and an operating handle 13.

Ainsi, le contact cathodique est assuré directement par la tige 2 et les entretoises 4. Le courant cathodique est amené sur la tige grâce à une connexion des parties terminales 22 du crochet 21 à la plaque vibrante 23 par l'intermédiaire des fils 36. Cette construction évite tous risques de cassure de fiche de connexion, tout en restant légère, l'appui 11 et la tige 2 dans laquelle on peut, de surcroît, pratiquer des évidements 7 (fig. 5), étant de préférence en aluminium.Thus, the cathodic contact is ensured directly by the rod 2 and the spacers 4. The cathodic current is brought to the rod by means of a connection of the end portions 22 of the hook 21 to the vibrating plate 23 via the wires 36. This construction avoids all risks of breakage of connection plug, while remaining light, the support 11 and the rod 2 in which it is possible, moreover, to make recesses 7 (fig. 5), preferably being made of aluminum.

Surtout, le champ d'application de l'appareil de galvano­plastie selon l'invention est sensiblement plus étendu, puisque le dispositif d'amenage de courant décrit permet le transport de courants cathodiques de l'ordre de 100 ampères.Above all, the field of application of the electroplating apparatus according to the invention is significantly more extensive, since the current supply device described allows the transport of cathode currents of the order of 100 amps.

Une autre particularité de l'appareil consiste à prévoir un moyen de soutien 21 relié latéralement au vibreur.Another particular feature of the apparatus consists in providing a support means 21 connected laterally to the vibrator.

La conformation de ce moyen de soutien est visible à la fig. 2: il constitue un crochet et se présente sous la forme d'un V renversé dont les branches se prolongent sur une certaine longueur parallèlement à l'axe de symé­trie du V, puis sont recourbées vers l'intérieur en di­rection de l'axe de symétrie et perpendiculairement à ce dernier. Les parties recourbées, appelées parties termi­nales, sont repèrées par 22; elles se terminent par une partie filetée 39.The shape of this support means is visible in fig. 2: it constitutes a hook and is in the form of an inverted V, the branches of which extend over a certain length parallel to the axis of symmetry of the V, then are bent inwards towards the axis of symmetry and perpendicular to it latest. The curved parts, called terminal parts, are marked with 22; they end in a threaded part 39.

Le crochet est relié au vibreur par l'intermédiaire de moyens d'absorption de vibrations, c'est-à-dire de moyen amortisseurs, de telle sorte que le crochet, isolé des vibrations, reste quasiment immobile en phase de travail.The hook is connected to the vibrator by means of vibration absorption means, that is to say damping means, so that the hook, insulated from vibrations, remains almost immobile during the working phase.

Dans l'exemple représenté, ces moyens d'absorption des vibrations sont des passe-fils en caoutchouc.In the example shown, these vibration absorption means are rubber grommets.

On voit que les parties terminales 22 du crochet sont reliées au vibreur en deux points diamètralement opposés et que les passe-fils sont engagés sur la partie termi­nale 22; ils sont ainsi disposés entre des ouvertures non repérées, pratiquées radialement dans la plaque de base 24 et lesdites parties terminales 22.We see that the end portions 22 of the hook are connected to the vibrator at two diametrically opposite points and that the grommets are engaged on the end portion 22; they are thus arranged between openings not marked, made radially in the base plate 24 and said end portions 22.

Un dispositif connu d'écrou/contre-écrou et de rondelles, non repéré, assure le blocage du crochet et de la cosse 38 du fil électrique 36, par serrage contre un bourrelet du passe-fil.A known device of nut / locknut and washers, not identified, ensures the locking of the hook and the terminal 38 of the electric wire 36, by tightening against a bead of the grommet.

Dans une variante non représentée les moyens amortis­seurs sont agencés à l'extérieur dans la zone inférieure des branches parallèles du crochet 21, c'est-à-dire à proximité des parties terminales 22 qui sont alors, dans cette variante, fixées directement à la plaque de base 24, ou sont au contraire agencés dans la zone supérieure desdites branches parallèles. Ces moyens sont constitués de ressorts agissant par compression ou de disques métalliques élastiques formant soufflet.In a variant not shown, the damping means are arranged outside in the lower zone of the parallel branches of the hook 21, that is to say near the end portions 22 which are then, in this variant, fixed directly to the base plate 24, or are on the contrary arranged in the upper zone of said parallel branches. These means consist of springs acting by compression or of elastic metal discs forming a bellows.

L'enveloppe du vibreur constitue enfin une dernière particularité de l'appareil de galvanoplastie selon l'invention. Contrairement aux appareils connus, dont la protection est un boîtier en aluminium, le vibreur est "habillé" d'une enveloppe en plastique aventageusement en polypropylène. Dans l'exemple représenté la protec­tion est constituée d'une enveloppe supérieure 45 et d'une enveloppe inférieure 46. Les organes intérieurs du vibreur sont protégés des projections d'électrolyte grâce à des moyens d'étanchéité 43,44, de préférence des joints toriques disposés entre les enveloppes et la plaque de base 24. Enfin, les enveloppes sont vissées sur la plaque de base au moyen de vis 47,48 inoxydables. Celles-ci étant en contact à l'extérieur avec le poly­propylène, tout phenomène rédox, et donc toute corro­sion, sera ainsi écarté.The envelope of the vibrator finally constitutes a final feature of the electroplating apparatus according to the invention. Unlike known devices, whose protection is an aluminum case, the vibrator is "covered" with a plastic envelope, adventurously made of polypropylene. In the example shown, the protection consists of an upper casing 45 and a lower casing 46. The interior parts of the vibrator are protected from electrolyte projections by means of sealing means 43,44, preferably seals O-rings arranged between the envelopes and the base plate 24. Finally, the envelopes are screwed to the base plate by means of stainless steel screws 47,48. These being in contact with the polypropylene on the outside, any redox phenomenon, and therefore any corrosion, will thus be eliminated.

Les moyens selon l'invention apportent des solutions rationnelles et peu coûteuses au problème de rendement et de fiabilité des appareils de galvanoplastie. De plus, le champ d'utilisation des appareils selon l'in­vention est considérablement augmenté.The means according to the invention provide rational and inexpensive solutions to the problem of efficiency and reliability of electroplating devices. In addition, the field of use of the devices according to the invention is considerably increased.

Claims (24)

1. Appareil de galvanoplastie, constitué d'une tige (2) reliant un vibreur à un panier (3), le vibreur compre­nant chaque fois au moins une plaque de base (24), un électro-aimant (25), une plaque vibrante (23) et un moyen de soutien, le panier étant lui-même relié à la tige par des entretoises (4), caractérisé en ce que l'entrefer (35) est directement formé par l'espace entre l'une des bases de l'électro-aimant (25) et la plaque vibrante (23).1. Electroplating apparatus, consisting of a rod (2) connecting a vibrator to a basket (3), the vibrator each comprising at least one base plate (24), an electromagnet (25), a vibrating plate (23) and a support means, the basket itself being connected to the rod by spacers (4), characterized in that the air gap (35) is directly formed by the space between one of the bases of the electromagnet (25) and the vibrating plate (23). 2. Appareil de galvanoplastie selon la revendication 1, caractérisé en ce que l'électro-aimant est fixé axiale­ment dans la plaque de base, l'axe de l'électro-aimant et de la plaque de base étant confondus sur un même support.2. Electroplating apparatus according to claim 1, characterized in that the electromagnet is fixed axially in the base plate, the axis of the electromagnet and the base plate being combined on the same support. 3. Appareil de galvanoplastie selon la revendication 2, caractérisé en ce que la fixation de l'électro-aimant (25) est assurée par l'intermédiaire d'un support (26).3. Electroplating apparatus according to claim 2, characterized in that the fixing of the electromagnet (25) is ensured by means of a support (26). 4. Appareil de galvanoplastie selon la revendication 3, caractérisé en ce que le réglage de l'entrefer est ob­tenu par rotation de l'électro-aimant autour de son axe.4. Electroplating apparatus according to claim 3, characterized in that the adjustment of the air gap is obtained by rotation of the electromagnet around its axis. 5. Appareil de galvanoplastie selon la revendication 4, caractérisé en ce que un moyen de blocage assure l'im­mobilisation de l'électro-aimant après la réglage de l'entrefer.5. Electroplating apparatus according to claim 4, characterized in that a blocking means ensures the immobilization of the electromagnet after the adjustment of the air gap. 6. Appareil de galvanoplastie selon l'une des revendi­cations 1 à 5 caractérisé en ce que l'électro-aimant est un bloc parallélépipédique.6. Electroplating apparatus according to one of claims 1 to 5 characterized in that the electromagnet is a parallelepiped block. 7. Appareil de galvanoplastie selon l'une des revendi­cations 1 à 5 caractérisé en ce que l'électro-aimant est un bloc cylindrique.7. electroplating apparatus according to one of claims 1 to 5 characterized in that the electromagnet is a cylindrical block. 8. Appareil de galvanoplastie, constitué d'une tige (2) reliant un vibreur à un panier, le vibreur comprenant chaque fois au moins une plaque de base, un électro-­aimant, une plaque vibrante et un moyen de soutien, le panier étant lui-même relié à la tige par des entretoi­ses, caractérisé par le fait que le contact cathodique est assuré par la tige et les entretoises.8. Electroplating apparatus, consisting of a rod (2) connecting a vibrator to a basket, the vibrator each comprising at least one base plate, an electromagnet, a vibrating plate and a support means, the basket being itself connected to the rod by spacers, characterized in that the cathodic contact is ensured by the rod and the spacers. 9. Appareil de galvanoplastie selon la revendication 1, caractérisé en ce que la tige est constituée d'une pièce métallique pleine présentant ou non des évidemments.9. Electroplating apparatus according to claim 1, characterized in that the rod consists of a solid metal part having or not having recesses. 10. Appareil de galvanoplastie selon la revendication 9, caractérisé en ce que le métal est l'aluminium.10. Electroplating apparatus according to claim 9, characterized in that the metal is aluminum. 11. Appareil de galvanoplastie selon l'une des revendi­cations 8 à 10, caractérisé en ce que l'amenée du courant cathodique par le haut de la tige est assurée par une connexion crochet/plaque vibrante.11. Electroplating apparatus according to one of claims 8 to 10, characterized in that the supply of the cathode current from the top of the rod is ensured by a hook / vibrating plate connection. 12. Appareil de galvanoplastie selon l'une des revendi­cations 8 à 12, caractérisé en ce que la plaque vibrante est solidaire de la tige par l'intermédiaire d'une pièce d'appui.12. Electroplating apparatus according to one of claims 8 to 12, characterized in that the vibrating plate is secured to the rod by means of a support piece. 13. Appareil de galvanoplastie selon la revendication 12, caractérisé en ce que la pièce d'appui est une pièce métallique pleine.13. Electroplating apparatus according to claim 12, characterized in that the support part is a solid metal part. 14. Appareil de galvanoplastie selon la revendication 12 ou 13, caractérisé en ce que la pièce d'appui présen­te un épaulement venant s'appuyer contre un épaulement complémentaire pratiqué dans l'extremité supérieure de la tige, et en ce que la pièce d'appui et la tige sont rendues solidaires au moyen d'éléments de liaision ra­ diaux (12,13,14,15).14. Electroplating apparatus according to claim 12 or 13, characterized in that the support part has a shoulder coming to bear against a complementary shoulder made in the upper end of the rod, and in that the part support and the rod are made integral by means of connecting elements ra dials (12,13,14,15). 15. Appareil de galvanoplastie selon l'une des revendi­cations 8 à 14, caractérisé en ce que les entretoises sont chassées dans la partie inférieure de la tige.15. Electroplating apparatus according to one of claims 8 to 14, characterized in that the spacers are driven into the lower part of the rod. 16. Appareil de galvanoplastie selon l'une des revendi­cations 8 à 15, caractérisé par des moyens permettant l'absorption des vibrations du vibreur, de sorte que celles-ci ne sont pas transmises au moyen de soutien (21).16. Electroplating apparatus according to one of claims 8 to 15, characterized by means allowing the absorption of the vibrations of the vibrator, so that these are not transmitted to the support means (21). 17. Appareil de galvanoplastie selon la revendication 16, caractérisé en ce que le moyen de soutien est un crochet comprenant deux branches dont les parties terminales sont reliées au vibreur en deux points dia­mètralement opposés, par l'intermédiaire des moyens d'absorption des vibrations.17. Electroplating apparatus according to claim 16, characterized in that the support means is a hook comprising two branches, the end portions of which are connected to the vibrator at two diametrically opposite points, by means of the absorption of vibrations. 18. Appareil de galvanoplastie selon la revendication 16 ou 17, caractérisé en ce que les parties terminales, dont les bouts sont filetés, sont orientés perpendicu­lairement à l'axe du vibreur, et en ce qu'elles passent dans des ouvertures diamètralement opposés pratiquées dans la plaque de base.18. Electroplating apparatus according to claim 16 or 17, characterized in that the end parts, the ends of which are threaded, are oriented perpendicular to the axis of the vibrator, and in that they pass through diametrically opposite openings made in the base plate. 19. Appareil de galvanoplastie selon la revendication 18, caractérisé en ce que les moyens d'absorption sont disposés entre les ouvertures de la plaque de base et les parties terminals du crochet.19. Electroplating apparatus according to claim 18, characterized in that the absorption means are arranged between the openings of the base plate and the terminal parts of the hook. 20. Appareil de galvanoplastie selon la revendication 18, caractérisé en ce que les moyens d'absorption sont disposés sur les branches du crochet (21).20. Electroplating apparatus according to claim 18, characterized in that the absorption means are arranged on the branches of the hook (21). 21. Appareil de galvanoplastie selon la revendication 18, caractérisé en ce que les parties terminales du crochet sont immobilisées au moyen de dispositif de blocage, et en ce que les dispositifs de blocage ne sont pas en contact direct avec la plaque de base.21. Electroplating apparatus according to claim 18, characterized in that the end parts of the hook are immobilized by means of a locking device, and in that the locking devices are not in direct contact with the base plate. 22. Appareil de galvanoplastie selon l'une des revendi­cations 8 à 20, caractérisé en ce que le vibreur compor­te une enveloppe protectrice étanche en matière plasti­que, de préférence en polypropylène.22. Electroplating apparatus according to one of claims 8 to 20, characterized in that the vibrator comprises a sealed protective envelope made of plastic, preferably polypropylene. 23. Appareil de galvanoplastie selon la revendication 22, caractérisé en ce que l'enveloppe protectrice est constituée d'une enveloppe supérieure (45) et d'une enveloppe inférieure (46).23. Electroplating apparatus according to claim 22, characterized in that the protective envelope consists of an upper envelope (45) and a lower envelope (46). 24. Appareil de galvanoplastie selon la revendication 23, caractérisé en ce que des moyens d'étanchéité (43,­44) préservent les organes intérieurs du vibreur de tout contact avec des agents corrosifs.24. Electroplating apparatus according to claim 23, characterized in that sealing means (43,44) preserve the internal organs of the vibrator from any contact with corrosive agents.
EP89810794A 1989-10-23 1989-10-23 Electroplating apparatus Withdrawn EP0424590A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP89810794A EP0424590A1 (en) 1989-10-23 1989-10-23 Electroplating apparatus
JP2284121A JPH03257197A (en) 1989-10-23 1990-10-22 Electroplating equipment
US07/601,369 US5124016A (en) 1989-10-23 1990-10-23 Electroplating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89810794A EP0424590A1 (en) 1989-10-23 1989-10-23 Electroplating apparatus

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JP3106854B2 (en) * 1994-06-15 2000-11-06 株式会社村田製作所 Plating equipment
US5843296A (en) * 1996-12-26 1998-12-01 Digital Matrix Method for electroforming an optical disk stamper
US5785826A (en) * 1996-12-26 1998-07-28 Digital Matrix Apparatus for electroforming
US6228230B1 (en) 1999-04-19 2001-05-08 Aem, Inc. Electroplating apparatus
US20040055873A1 (en) * 2002-09-24 2004-03-25 Digital Matrix Corporation Apparatus and method for improved electroforming
CN114000185A (en) * 2021-11-15 2022-02-01 中江立江电子有限公司 Manual line vibration electroplating power supply conducting system

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