WO1991008326A1 - Dispositif de maintien et de contact pour des composants a traiter dans un bain d'electrolyse - Google Patents

Dispositif de maintien et de contact pour des composants a traiter dans un bain d'electrolyse Download PDF

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Publication number
WO1991008326A1
WO1991008326A1 PCT/DE1990/000922 DE9000922W WO9108326A1 WO 1991008326 A1 WO1991008326 A1 WO 1991008326A1 DE 9000922 W DE9000922 W DE 9000922W WO 9108326 A1 WO9108326 A1 WO 9108326A1
Authority
WO
WIPO (PCT)
Prior art keywords
holding
contact
contact area
holding device
receptacle
Prior art date
Application number
PCT/DE1990/000922
Other languages
German (de)
English (en)
Inventor
Thomas Kosikowski
Rolf Schröder
Original Assignee
Schering Aktiengesellschaft
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 Schering Aktiengesellschaft filed Critical Schering Aktiengesellschaft
Publication of WO1991008326A1 publication Critical patent/WO1991008326A1/fr

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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
    • C25D17/06—Suspending or supporting devices for articles to be coated
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/24—Reinforcing the conductive pattern
    • H05K3/241—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus

Definitions

  • the invention relates to an arrangement according to the preamble of claim 1.
  • Such holding and contact devices (hereinafter simply called “holding device” for the sake of simplicity) are used, on the one hand, to provide components in an electrolysis bath with a metallic coating, such as, for example, with a copper coating electrical circuit boards to be provided, and to connect the objects to be treated simultaneously, for example as a cathode, to a DC voltage.
  • a metallic coating such as, for example, with a copper coating electrical circuit boards to be provided
  • a cathode electrically conductive
  • a direct current source for example, if only one side of the component to be treated is to be provided with a metallic coating, then only the correspondingly arranged holding area is designed to be electrically conductive and is provided with a contact area for connecting the component to a direct current source.
  • both holding members are designed to be electrically conductive and each provided with a contact area. To one unwanted metallic coating on the holding and
  • the holding and contact devices can be connected to a transport device circulating in a closed circuit, for example a conveyor belt or a transport chain.
  • a transport device circulating in a closed circuit, for example a conveyor belt or a transport chain.
  • holding devices can get into the electrolysis bath which are temporarily not used for the transport of a component .
  • the invention is based on the object of developing a holding and contact device for components to be treated in an electrolysis bath of the type mentioned so that the formation of metallic precipitates on the holding members, in particular their holding and contact areas, is at least largely avoided .
  • the seal is formed by mutual abutment of the two holding members.
  • the holding and contact area is sealed to the outside in a particularly simple manner.
  • a system leading to an effective seal can then result in a particularly simple manner by the action of a holding force for a component or acting as a pretensioning force on the holding members if a component is received between the holding members.
  • first and the second holding area have a first and a second contact area, respectively, and both contact areas are sealed by one or more seals.
  • the invention provides the variant according to claim 4.
  • the holding areas either have separate contact areas, or that the holding areas themselves form the contact areas with their support or contact surfaces by being metallic and connected to the associated connections.
  • both interacting holding or contact areas holding the component will each be connected to an electrical connection.
  • cases are also conceivable where only one of the two holding or contact areas is electrically connected, provided that only the surfaces covered by it are to be metallized by the electrolyte.
  • the term "holding and contact area” is always used below, but this formulation includes all of the aforementioned variants of the invention.
  • the sole or additional arrangement of a bellows-type sealing element on a holding and contact area has proven to be advantageous for the formation of a seal.
  • the bellows-like sealing element has a high elasticity, so that it can be compressed sufficiently when the component is received by the holding device in order to allow good contact between the holding and contact areas and the component. If, however, the holding device does not carry any component, the bellows-like sealing element can expand, so that its free end area lies against the respectively opposite holding and contact area. Access to the electrolyte in each of the holding and contact areas is thus reliably prevented as far as possible even if holding areas assigned to one another do not abut one another even if there is no component between them.
  • an elastic sealing element such as a sealing ring or the like, is arranged on a holding and contact area to form a seal.
  • an elastic sealing element which can be arranged surrounding one or more holding and contact areas, allows good contact between the holding and contact areas and the component while a component is being received in the holding device. If there is no component between mutually opposite holding and contact areas of a holding device, the sealing element prevents the electrolyte from accessing the holding and contact areas after the holding and contact areas of a holding device which can be moved relative to one another have been moved relative to one another. Such a movement can be carried out, for example, manually using a corresponding device or else in that these areas are biased against one another by a spring.
  • At least one sealing element is formed by a section of an insulating layer. Such a sealing element is particularly easy to produce together with the insulating layer.
  • a holding and contact area of one holding member bears against a contact area of the other holding member, possibly its holding and contact area.
  • a corresponding system which can be carried out manually, for example, by moving a first and a second holding and contact area towards one another and fixing them in a corresponding position, it is easy to access the electrolyte to hold and Create a seal preventing contact areas.
  • this can also be done, for example, by means of a device or by means of a pretension between the two holding and contact areas.
  • the contact area has an insulating layer.
  • first and the second holding and contact areas are offset from one another in each case for a system on a system area. This ensures in a simple manner, even if there is a holding and contact area on one of the mutually opposite holding members, that a holding and contact area with an insulating layer
  • REPLACEMENT LEAF having contact area of the corresponding holding member comes into contact when there is no component between the first and second holding and contact areas. Such an offset is particularly advantageous in the embodiment of the invention explained below.
  • At least one holding member has a receptacle into which a correspondingly formed inner shoulder of the other holding member can engage with a holding and contact area formed on the end face of the inner shoulder, so that mutual engagement of side faces of the receptacle and a seal is formed of the inner shoulder and / or regions adjacent to the inner shoulder and the receptacle.
  • a seal can also be formed in that the areas surrounding the attachment and the receptacle come into abutment. In these cases, the holding and contact area formed on the extension is arranged away from the seal; this further reduces the possibility that metallic precipitates can occur at this holding and contact area.
  • the receptacle and attachment each have at least one inclined surface facing one another.
  • the approach engages in the area of the inclined surface in the manner of a cone, which leads to a particularly good sealing effect.
  • the described absorption is formed by a circular they 'umge ⁇ reproduced annular extension of the corresponding support member.
  • the above-mentioned receptacle and the inner insert fitting into it, as well as the ring attachment in the cross-section are designed in the shape of a truncated cone in such a way that the annular attachment engages in a corresponding, annular receptacle.
  • the side or lateral surfaces of these truncated cones form the above. Bevels.
  • the receptacle and lug are designed so that after the lug engages, its end face is spaced from an opposite bottom surface of the corresponding receptacle. This ensures that even if there are metallic precipitates on the end face of the attachment in question, they do not strike the bottom face of the receptacle.
  • Ring approach is sealed to the outside in the annular receptacle.
  • the first-mentioned receptacle for the inner approach located on the other holding member, with one likewise on its
  • the holding and contact area is also sealed to the outside by the engagement of the ring shoulder in the ring-shaped receptacle.
  • the seal inside the annular receptacle may also be used
  • REPLACEMENT LEAF arranged inner lug can be inserted into the corresponding receptacle formed in the middle of the annular lug with a sealing effect.
  • holding and contact devices are provided with a connection for a continuous or discontinuous rotating conveyor device according to one or more of the above features.
  • Existing semi or fully automatically operated electrolysis baths, such as galvanic baths, can thus be easily retrofitted with the holding and contact device according to the invention.
  • Fig. 1 a section through a first
  • Embodiment of a holding device according to the invention in a first operating position with the component held
  • FIGS. 1 and 2 a plan view of the holding device according to FIGS. 1 and 2,
  • Fig. 4 a section through a second
  • FIG. 5 shows a section through a third exemplary embodiment of a holding device according to the invention in a first operating position with the component held
  • a first exemplary embodiment of a holding device denoted overall by 1, is incompletely shown in such a way that only a first and a second holding member 3, 5 are shown in the section in which between a first and the first holding member 3 ⁇ formed holding and contact area 7 and a second holding and contact area 9 formed on the second holding member 5, a component 11 is held.
  • the holding device 1 is used to hold and contact the component 11, which is designed, for example, as an electrical printed circuit board, which is introduced, for example, in semi- or fully automatic operation into an electrolysis bath and is guided through it to provide one or both sides with a metallic coating, in the case of electrical Printed circuit boards are essentially provided with a copper coating.
  • the first and second holding members 3, 5 can be connected in a corresponding manner via a connection, not shown, to a conveyor device, which is also not shown, and which rotates continuously or discontinuously.
  • a holding device 1 in a system for the electrolytic treatment of plate-shaped objects is described in detail in DE-OS 36 24 481, which goes back to the same applicant described so that it can be referred to. It is essential for the holding or contacting of components 11 that the first and second holding members 3, 5 can be moved towards and away from one another in the direction indicated by an arrow 13 in FIGS. 1 and 2.
  • This movement can be carried out, for example, by pivoting about a pivot point, not shown, or as a reciprocating movement, it being advantageous to bias the first and second holding members 3, 5 against one another by a spring such that after manual or automatic insertion a component 11 which is held by the biasing force between the first and second holding areas 7, 9.
  • a pretensioning force when no component 11 is inserted between the first and second holding members 3, 5, as shown in FIG. 2, leads to the first and second holding members 3, 5 coming into contact with one another.
  • the first and second holding members 3, 5 can, however, also be brought into such a position by a manual or an actuation triggered by a corresponding device. They can also be held securely in this position by a locking device (not shown), for example having locking means or locking elements.
  • an associated first and second contact area 15, 17 is respectively formed on the first and second holding area 7, 9.
  • both holding members 3, 5 formed contact areas 15, 17 a current supply to the respectively contacted, opposite sides of the component 11 is ensured via line means, not shown, so that each of the two sides is provided with a metallic coating.
  • both the first and the second holding area 7, 9 are each designed as first and second contact areas 15, 17. If only one side of a component 11 is to be provided with a metallic coating, then only one of the a two contact members 3, 5 arranged a contact area. As a rule, it is sufficient if the metallic holding area with its surface intended for contact with the component simultaneously establishes electrical contact, ie that no separate contact part has to be provided. If necessary, however, as indicated in the drawings, a separate contact part or region 15, 17 can be provided.
  • the surfaces of the first and second holding members 3, 5 located outside the holding and contact areas 7, 9, 15, 17 are covered with an essentially closed insulating layer 19.
  • the first and second holding members 3, 5 move towards one another, for example due to the aforementioned pretensioning. so that they come into contact with each other in some areas.
  • the first holding member 3 has a frustoconical receptacle 21 arranged in a central region, and on the second holding member 5 there is a correspondingly arranged and designed inner frustum-shaped shoulder 23 which is integral with the second holding member 5 can be molded. As shown in Fig.
  • a gasket which surrounds this area in a ring is provided by regionally engaging the section 19 'of the insulating layer 19 which surrounds the first holding and contact area 7, 15 a contact area 25 of the second holding member 5 is formed.
  • the contact area 25 is likewise formed by a section of the insulating layer 19 covering the second holding member 5.
  • first and the second holding and contact areas 7, 15, 9, 17 are each designed and arranged on the first and second holding members 3, 5 such that they Holding and contact areas are not opposite one another, but are offset from one another in the direction of arrow 38. Only by the measure of such a displacement, a sufficient seal for holding and contact areas can be made possible in that a holding and contact area formed on a holding member with missing component 11 with a contact surface formed by the insulating layer 19 25 comes in plant. In addition, there is the additional sealing by means of inclined surfaces, which has already been explained above, reference being made to the details below, in particular with regard to the ring-shaped extension 33.
  • the inner shoulder 23 is designed with respect to the receptacle 21 in such a way that when the side faces rest against one another, There is a distance between the second holding and contact area 9, 17 and the opposite bottom surface 27 of the receptacle 21.
  • an annular groove-shaped receptacle 29 with a trapezoidal cross section is formed opposite the first holding and contact area 7, 15 and surrounds the inner shoulder 23.
  • the aforementioned first holding and contact areas 7, 15 are located on the end face of an annular projection 33 which, in the operating position according to FIG. 2, surrounds the inner projection 23.
  • the arrangement is such that in the operating position according to FIG. 2 between the first holding and contact areas 7, 15 and the bottom 31 of an annular groove-shaped receptacle 29 for this ring sentence 33 also remains a distance.
  • the second exemplary embodiment which is likewise shown incompletely in FIG. 4, differs from the first exemplary embodiment essentially in that the insulation 19 of the upper holding member 3 according to number 19 "partially projects into the receptacle 29 and on a contact surface 25 'of the insulation 19 of the of the lower holding member 5.
  • the annular receptacle 29 is also somewhat deeper than in the exemplary embodiment in FIGS. 1 to 3.
  • the holding members 3, 5 are designed with a ring insert 33
  • the inner shoulder 23 and the inner shoulder 23 are the same as in the exemplary embodiment according to FIGS. 1 to 3. As shown in FIG.
  • the sealing of the holding and contact areas 7, 15; 9, 17 compared to the electrolysis bath is also present in the third exemplary embodiment, which is incompletely shown in FIGS. 5 and 6, in which parts which correspond to the previous exemplary embodiment are provided with the same reference numerals.
  • a first holding and contact area 7, 15 on the inner shoulder 23 are adjacent to one another Receptacle 21 is formed and second holding and contact areas 9, 17 are formed on the inner shoulder 23 provided on the second holding member 5.
  • a bellows-type sealing element 35 which is firmly connected to the first holding member 3 is provided. Due to its elastic property, the sealing element 35 can expand and, as shown in FIG. 6, with its free end 37 opposite the first holding member 3, can rest against a contact surface 25 'of the second holding member 5.
  • the sealing element 35 surrounding the first and second holding and contact areas 7, 15, 9, 17 effectively prevents electrolyte from reaching the holding and contact areas 7 when the component 11 is missing after immersion in the electrolysis bath , 15, 9, 17 and lead there to undesirable metallic precipitations. If a component 11 is held between the first and second holding and contact areas, as shown in FIG.
  • the elasticity of the sealing element 35 allows it to be shortened accordingly, so that a good hold and contact between the component 11 and the first and second holding and contact areas is ensured.
  • This form of the sealing of the holding and contact areas to the outside in accordance with the invention also leads in a simple manner to the fact that metallic precipitations at these holding and contact areas are effectively prevented.
  • the abutment of the end edge 19 ′ of the insulating layer 19 of the holding member 3 on a counter surface 25 of the insulating layer of the lower holding member 5 can also serve as an additional seal.
  • FIGS. 5 and 6 shows that between the insulating layer 39, the truncated cone
  • annular air gap 40 Surrounds inner shoulder 23, and the correspondingly shaped u lau- the inner wall 33 'of the ring extension 33 does not have to be in contact, but an annular air gap 40 can be provided.
  • the aforementioned air gap could also be present in the other exemplary embodiments, although the sealing action of the insulation 39 against the inner wall 33 'is dispensed with, but when the insulating section 19 "engages in the annular receptacle 29 according to FIG. 4 has the advantage that dimensional deviations of the aforementioned parts or surfaces 39, 33 * on the one hand and 19 ", 25 'on the other hand cannot lead to the desired sealing effect not occurring on one of these surface pairs.
  • the frusto-conical insulating layer 39 surrounding the inner portion 23 not only serves the sealing system explained on the counter surface 33 ', but especially when the component 11 is held (see FIGS. 1 and 5) it ensures that no electrolysis liquid is exposed metallic surfaces of the inner shoulder 23 can reach. For this reason it is appropriate that. the insulating layer 39 is, as shown, led to the level of the second holding and contact area 9, 17.

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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)
  • Electrolytic Production Of Metals (AREA)

Abstract

Dans les modèles connus de dispositifs de maintien et de contact, des dépôts métalliques gênants peuvent se produire sur les zones de maintien ou de contact, en particulier quand on fait passer ces dispositifs sans composant dans le bain d'électrolyse. Pour éliminer ces dépôts, on fait passer habituellement ces dispositifs de maintien et de contact dans une chambre de démétallisation après leur passage dans le bain d'électrolyse. Dans l'invention, la production de ces dépôts métalliques est déjà sensiblement empêchée lorsqu'on fait passer ces dispositifs de maintien et de contact sans composant dans le bain d'électrolyse. A cet effet, on crée, entre les deux pièces de maintien (3, 5), une étanchéité qui protège vers l'extérieur les zones de maintien et de contact (7, 15, 9, 17) de manière à empêcher sensiblement qu'elles soient mouillées par l'électrolyte.
PCT/DE1990/000922 1989-11-28 1990-11-27 Dispositif de maintien et de contact pour des composants a traiter dans un bain d'electrolyse WO1991008326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893939256 DE3939256A1 (de) 1989-11-28 1989-11-28 Halte- und kontakteinrichtung fuer in einem elektrolysebad zu behandelnde bauelemente
DEP3939256.2 1989-11-28

Publications (1)

Publication Number Publication Date
WO1991008326A1 true WO1991008326A1 (fr) 1991-06-13

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Application Number Title Priority Date Filing Date
PCT/DE1990/000922 WO1991008326A1 (fr) 1989-11-28 1990-11-27 Dispositif de maintien et de contact pour des composants a traiter dans un bain d'electrolyse

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DE (1) DE3939256A1 (fr)
WO (1) WO1991008326A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027093A1 (fr) * 1994-03-30 1995-10-12 M + B Plating Racks, Inc. Bornes utiles dans un dispositif de galvanoplastie
US8567590B2 (en) 2005-05-25 2013-10-29 Atotech Deutschland Gmbh Method, clip and device for transporting an article to be treated in an electrolytic system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9417744U1 (de) * 1994-11-04 1995-02-09 Strecker, Günther, 74080 Heilbronn Klammartige Haltevorrichtung für Tauchgalvanisierung
DE19504517C1 (de) * 1995-02-11 1996-08-08 Atotech Deutschland Gmbh Verfahren zum Galvanisieren von plattenförmigem Behandlungsgut in horizontalen Durchlaufanlagen sowie Vorrichtung zur Durchführung des Verfahrens
DE10340888B3 (de) * 2003-09-04 2005-04-21 Atotech Deutschland Gmbh Stromversorgungseinrichtung in einer Vorrichtung zur elektrochemischen Behandlung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773042A (en) * 1929-06-13 1930-08-12 William S Jones Mold or plate hanger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116897A1 (de) * 1981-04-24 1982-11-11 Schering Ag, 1000 Berlin Und 4619 Bergkamen Gestell zum befestigen von leiterplatten
DE3439943A1 (de) * 1984-11-02 1986-05-15 Bernd 7530 Pforzheim Oberle Klemme zur halterung von leiterplatten im galvenikbad
DE3624481A1 (de) * 1986-07-19 1988-01-28 Schering Ag Anordnung zur elektrolytischen behandlung von plattenfoermigen gegenstaenden

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773042A (en) * 1929-06-13 1930-08-12 William S Jones Mold or plate hanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027093A1 (fr) * 1994-03-30 1995-10-12 M + B Plating Racks, Inc. Bornes utiles dans un dispositif de galvanoplastie
US8567590B2 (en) 2005-05-25 2013-10-29 Atotech Deutschland Gmbh Method, clip and device for transporting an article to be treated in an electrolytic system

Also Published As

Publication number Publication date
DE3939256C2 (fr) 1993-08-05
DE3939256A1 (de) 1991-05-29

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