EP0237736B1 - Arrangement for leading parts to be galvanized to or from a suspended rack - Google Patents

Arrangement for leading parts to be galvanized to or from a suspended rack Download PDF

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Publication number
EP0237736B1
EP0237736B1 EP87101189A EP87101189A EP0237736B1 EP 0237736 B1 EP0237736 B1 EP 0237736B1 EP 87101189 A EP87101189 A EP 87101189A EP 87101189 A EP87101189 A EP 87101189A EP 0237736 B1 EP0237736 B1 EP 0237736B1
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EP
European Patent Office
Prior art keywords
setup
accordance
rack
board
suction cups
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
EP87101189A
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German (de)
French (fr)
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EP0237736A1 (en
Inventor
Thomas Kosikowski
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.)
Atotech Deutschland GmbH and Co KG
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Schering AG
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Publication date
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Publication of EP0237736A1 publication Critical patent/EP0237736A1/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • the invention relates to an arrangement according to the preamble of claim 1.
  • the bringing of printed circuit boards to be electroplated, which contain electronic circuits, or the associated switching elements later, into or out of the respective hanging rack Arrangements are known in which plate-shaped parts to be galvanized are moved by means of suction cups which hold them pneumatically and are brought into the respective position or into the respective hanging frame. The forces that can be applied by means of such suction cups are limited. This also limits the scope of this known arrangement. This means that larger plate-shaped parts cannot be moved. In particular, difficulties arise, however, when the plate-shaped parts are to a certain extent "glued" to the hanging frame by the metal masses which are deposited on them during the electroplating process and have to be removed therefrom by appropriate tensile force.
  • the object of the invention in contrast, is to improve an arrangement according to the preamble of claim 1 in such a way that both the necessary force for bringing the plate-shaped parts into the hanging frame and out of the hanging frame is present, as well as the plate-shaped parts with these movements the correct one Assume or maintain position.
  • the solution to this problem is seen, starting from the preamble of claim 1, first in the combination according to the features of the characterizing part of claim 1.
  • the features a give the force required to raise and lower the plate-shaped parts; if necessary, tearing them off the hanging frame after the galvanizing and "sticking" or “sticking” of the respective plate-shaped part on the hanging frame.
  • the features b have primarily or even exclusively the task of keeping the respective plate-shaped part in the correct position or in the balance, ie that it does not kink sideways from its vertical position when lifting or lowering. This would both the attachment of the plate-shaped part on the hanging frame, as well as the deposition of the plate-shaped part, for. B. in a support frame according to claim 11, hinder u. May even make it impossible.
  • the feature group c ensures that the grippers and the pneumatic suction cups each have the same position with respect to one another and thus also with respect to the plate-shaped part to be transported. It can be seen that by dividing the functions "lifting and lowering" on the one hand and “holding or balancing" on the other hand to the feature groups a and b, and the connection of these feature groups a and b work together through the feature group c all three feature groups to solve the task. Since the suction cups according to feature group b only grasp the plate-shaped parts on their side faces, it is advantageously possible to push the plate-shaped parts without gaps from below onto plate-shaped parts already in the hanging frame. This avoids disadvantageous gaps there (see also the later explanations).
  • the gripper design according to claim 4 enables sufficient power transmission without it being necessary to provide separate recesses, openings or the like for the penetration of a gripper part on the plate-shaped part to be moved.
  • the features of claim 5 ensure on the one hand that the grippers (usually several grippers are provided) each have the same distance from the edge of the plate-shaped part with their gripping surface or tip.
  • the supports press against its lower edge (According to feature group c of claim 1, the support is also attached to the lifting frame), so that the supports are available for lifting the relatively heavy plate-shaped parts in this preferred embodiment of the invention.
  • the arrangement according to the invention is advantageous and also, in a preferred embodiment of the invention, supplemented by a support frame according to claim 11, which on the one hand enables the plate-shaped parts to be accommodated as long as they have not yet been suspended in the hanging scaffolding.
  • the support frames are designed in such a way that they allow the lifting scaffold to be inserted with grippers and suction cups and the plate-shaped parts to be lifted out or lowered and then the lifting scaffold to be removed again.
  • the invention is particularly advantageous in cooperation with the scaffolding of the plate-shaped parts which resiliently grip hanging scaffolding according to claims 14 to 16.
  • the insertion of the edges of such plate-shaped parts between the resilient clamping members of the suspended scaffolding requires a not inconsiderable force, but this can be applied with a suspended scaffold according to the invention.
  • the lifting frame with the associated components is explained with reference to FIGS. 1, 2.
  • the lifting frame generally numbered 1 has in its lower area several grippers 2, each consisting of two pliers-like halves 3, which have gripping surfaces or, according to the illustrated and preferred embodiment, gripping tips 4 in the lower area of the plate-shaped to be transported Attack part 5, namely under pressure of a spring 6.
  • the pliers half 3 shown on the left in FIG. 2 is pivoted about the contact point 7 of a peg-like abutment 8.
  • the gripper also includes a support 9, which is located at a relatively short distance from the gripper tips 4 and serves to support the lower edge 5 ⁇ of the plate-shaped part.
  • a part 12 (magnet, pneumatics or the like) can be moved in the direction of arrow 13 and, when hitting the lower lever arm 3 ⁇ of the movable gripper half shown in FIG. 2, cancels the holding or clamping force of the gripper tips 4 on the plate-shaped part 5. If at the same time the pneumatic effect of the pneumatic brackets still to be explained is canceled - this can be done by synchronously controlled means, for example synchronously controlled pneumatics - then the plate-shaped part 5 is released from the lifting frame.
  • suction cups 15, which are to be set pneumatically under vacuum, are provided, which act on the side surface 5 pl of the plate-shaped part 5 and balance them, in particular to prevent them from accidentally tipping away in the direction of the double arrow 14.
  • the suction cups 15 are connected to the grippers 2 via the lifting frame 1, ie the position of these parts relative to one another is fixed.
  • Fig. 1 shows that several grippers 2 are provided side by side and at a distance from each other on a horizontal line 16 could be. 1, a plurality of suction cups 15 can also be provided next to one another at a distance and preferably also on a horizontal line.
  • the suction cups are also at such a distance from the edge of the respective plate-shaped part that the suction cups do not hinder the effect of the invention described below: It can be seen that with the invention, the plate-shaped parts with both their lower and upper edges 5 ⁇ , 5 ′′′ and with their side edges 5 ⁇ ⁇ without gaps to each above or below or adjacent plate-shaped parts, which are also to be electroplated.
  • This gapless bumping is important because in the event of a distance between the edge of a plate-shaped part and the edge of an adjacent plate-shaped part in the galvanic bath, deposits form in and around this gap, in the form of a so-called "dog bone". Such deposits are disadvantageous because the resulting layer thickness of the galvanic deposit can lie outside the permissible tolerances.
  • the suction cups themselves can have a relatively small diameter, since they only have to apply balancing forces, but not lifting or lowering forces.
  • 4 has a series of slots 18 which only extend over a limited length 1 and below which a free space of a height h is left.
  • the plate-shaped parts are again numbered 5.
  • the slots 18 are dimensioned so that the plate-shaped parts can be inserted therein.
  • a number of compartments 19 are created within a support frame (20 compartments in the present exemplary embodiment), in which the plate-shaped parts 5 can be accommodated one behind the other and in a small space.
  • the distance h of the lower edge 5 ⁇ of the plate-shaped part 5 from the spar 21 of the support frame allows the introduction of the gripper 5 approximately in the direction of arrow 22 (FIG. 4).
  • the respective plate-shaped part 5 can be lifted upwards in the lifting direction 24 and inserted into the respective hanging frame (see the explanations below).
  • the lowering direction is 24 ⁇ .
  • the hanging frame consists of two frame struts 25 which hold the circuit boards 5.
  • pairs of associated clamping springs 26 are provided, which in this example are slightly angled and thus hold the circuit board inserted between them with resilient clamping force at point 27.
  • This is only shown schematically in FIG. 5. It can be seen that the shape of the springs 26 is such that the circuit boards can either be pushed in the direction of arrow 28 or in the direction of arrow 29, ie parallel to the frame struts 25 between the pairs of springs or pulled out again.
  • the electroplating current is supplied to the printed circuit boards 5 via the frame struts 25 and the springs 26.
  • the springs 26 extend freely from the frame struts 25 so that the frame struts themselves do not impede the insertion of the printed circuit boards 5.
  • the respective springs preferably protrude into the space between the two frame struts 25, so that a uniform galvanization takes place.
  • 25 ⁇ is a crossbar connecting both frame struts to the hanging frame, also called frame support.
  • Fig. 5 also shows that several circuit boards can be arranged one above the other in a frame and that several circuit boards 5 can also be provided in the horizontal direction, since the frame struts can have a series of pairs of clamping springs arranged one above the other on each side.
  • a circuit board in the manner described can be brought with its edges between the clamping springs 26 into the clamping and thus electroplating position, and can be pulled out of the springs again after electroplating.
  • circuit boards 5 have at their side longitudinal edges 5 ⁇ one or more openings which engage in the clamped holding position of the plates via supporting elements of the respective frame struts and thus, in addition to the clamp holder by the springs, holding or securing the circuit board 5 in its electroplating position represent.
  • FIGS. 8, 8a, 9 An embodiment of such an additional hold is shown in FIGS. 8, 8a, 9 and described below.
  • pairs of springs are provided which consist of springs 31 fixedly attached to the frame struts and cooperating therewith, but springs 34 pivotable about the longitudinal axes 32 of shafts 33 with the shafts.
  • Fig. 9 shows the spring pairs 31, 34 in the clamping position.
  • the circuit boards 5 assume the position indicated by dash-dotted lines.
  • This exemplary embodiment of the invention is particularly suitable for the automated introduction of the printed circuit boards into the clamping position and removal of the printed circuit boards by means of an arrangement according to the invention consisting of grippers and suction cups, since this transport of the printed circuit boards is carried out mechanically with a correspondingly synchronized rotation of the shafts 33 (as above described) can be coupled.
  • a rotary magnet 35 which is moved onto one of the ends 36 of the shafts 33, can rotate it about its axis 32 in the sense described above.
  • the other shaft 33 is then moved in the opposite direction by two driving gearwheels.
  • holding or supporting pins 37 are also fastened to the frame, by means of which the plates 5 are in the operating position used for galvanization (Clamp position) with holes, not shown, can be inserted.
  • This plug connection secures the circuit boards 5 against falling during the assembly phases, in which the springs 31, 34 do not rest against the circuit boards with clamping force.
  • the diameter of the aforementioned holes can be larger than the diameter of the holding means (e.g. holding pins).
  • the circuit boards are not pushed upwards by the grippers, but instead there is a movement in a direction transverse to the board plane. This is an advantage if there is no space for inserting the circuit boards from above or from below. Such movement is with an arrangement according to the invention, for. B. according to the example of FIGS. 1, 2 to convey easily.
  • the springs shown are either made of round wire or flat wire (ribbon).

Description

Die Erfindung betrifft eine Anordnung gemäß dem Oberbegriff des Anspruches 1. Dabei ist insbesondere und als bevorzugtes Anwendungsgebiet das Bringen von zu galvanisierenden Leiterplatten, welche elektronische Schaltungen beinhalten, bzw. die zugehörigen Schaltelemente später aufnehmen, in das bzw. aus dem jeweiligen Hängegestell. Man kennt Anordnungen, bei denen plattenförmige, zu galvanisierende Teile mittels sie pneumatisch haltender Saugnäpfe bewegt und in die jeweilige Lage bzw. in das jeweilige Hängegestell gebracht werden. Die mittels solcher Saugnäpfe aufbringbaren Kräfte sind begrenzt. Damit ist auch der Anwendungsbereich dieser vorbekannten Anordnung begrenzt. So können hiermit nicht größere plattenförmige Teile bewegt werden. Insbesondere ergeben sich aber Schwierigkeiten, wenn die plattenförmigen Teile durch die beim Galvanisiervorgang sich an ihnen niederschlagenden Metallmassen am Hängegestell gewissermaßen "angeklebt" sind und durch entsprechende Zugkraft davon gelöst werden müssen.The invention relates to an arrangement according to the preamble of claim 1. In this case, in particular and as a preferred field of application, the bringing of printed circuit boards to be electroplated, which contain electronic circuits, or the associated switching elements later, into or out of the respective hanging rack. Arrangements are known in which plate-shaped parts to be galvanized are moved by means of suction cups which hold them pneumatically and are brought into the respective position or into the respective hanging frame. The forces that can be applied by means of such suction cups are limited. This also limits the scope of this known arrangement. This means that larger plate-shaped parts cannot be moved. In particular, difficulties arise, however, when the plate-shaped parts are to a certain extent "glued" to the hanging frame by the metal masses which are deposited on them during the electroplating process and have to be removed therefrom by appropriate tensile force.

Die Aufgabe der Erfindung besteht demgegenüber darin, eine Anordnung gemäß dem Oberbegriff des Anspruches 1 dahingehend zu verbessern, daß sowohl die notwendige Kraft zum Bringen der plattenförmigen Teile in das Hängegestell und aus dem Hängegestell vorhanden ist, als auch die plattenförmigen Teile bei diesen Bewegungsvorgängen die richtige Lage einnehmen bzw. beibehalten.The object of the invention, in contrast, is to improve an arrangement according to the preamble of claim 1 in such a way that both the necessary force for bringing the plate-shaped parts into the hanging frame and out of the hanging frame is present, as well as the plate-shaped parts with these movements the correct one Assume or maintain position.

Die Lösung dieser Aufgabe wird, ausgehend vom Oberbegriff des Anspruches 1, zunächst in der Kombination gemäß den Merkmalen des Kennzeichens des Anspruches 1 gesehen. Die Merkmale a ergeben die erforderliche Kraft zum Heben und Absenken der plattenförmigen Teile; gegebenenfalls deren Abreißen vom Hängegestell nach erfolgter Galvanisierung und "Festkleben" oder "Festbacken" des jeweiligen plattenförmigen Teiles am Hängegestell. Die Merkmale b haben vorrangig oder sogar ausschließlich die Aufgabe, das jeweilige plattenförmige Teil in der richtigen Lage bzw. in der Balance zu halten, d. h. daß es nicht aus seiner senkrechten Lage beim Hochheben oder Absenken seitlich wegkiopt. Dies würde sowohl das Anbringen des plattenförmigen Teiles am Hängegestell, als auch das Absetzen des plattenförmigen Teiles, z. B. in einem Traggestell gemäß Anspruch 11, behindern, u. U. sogar unmöglich machen. Die Merkmalsgruppe c sichert,daß die Greifer und die pneumatischen Saugnäpfe jeweils die gleiche Position zueinander und damit auch zum jeweils zu transportierenden plattenförmigen Teil haben. Es ist ersichtlich, daß durch die Aufteilung der Funktionen "Heben und Senken" einerseits und "Halten bzw. Balancieren" andererseits auf die Merkmalsgruppen a und b, sowie die Verbindung dieser Merkmalsgruppen a und b durch die Merkmalsgruppe c alle drei Merkmalsgruppen zur Lösung der gestellten Aufgabe zusammenwirken. Da die Saugnäpfe gemäß Merkmalsgruppe b die plattenförmigen Teile nur an deren Seitenflächen erfassen, ist es vorteilhafterweise möglich, die plattenförmigen Teile lückenlos von unten her an schon im Hängegestell befindliche plattenförmigen Teile anzuschieben. Damit werden dort nachteilige Spalte (siehe auch die späteren Ausführungen) vermieden. Ebenso ist ein lückenloses Anstoßen der seitlichen senkrechten Ränder der plattenförmigen Teile an etwaige weitere benachbarte plattenförmigen Teile möglich. Das gleiche gilt für den unteren Rand des plattenförmigen Teiles, sofern nach seinem Einbringen in das Hängegestell noch ein weiterer plattenförmiger Teil von unten gegen ihn angeschoben wird.The solution to this problem is seen, starting from the preamble of claim 1, first in the combination according to the features of the characterizing part of claim 1. The features a give the force required to raise and lower the plate-shaped parts; if necessary, tearing them off the hanging frame after the galvanizing and "sticking" or "sticking" of the respective plate-shaped part on the hanging frame. The features b have primarily or even exclusively the task of keeping the respective plate-shaped part in the correct position or in the balance, ie that it does not kink sideways from its vertical position when lifting or lowering. This would both the attachment of the plate-shaped part on the hanging frame, as well as the deposition of the plate-shaped part, for. B. in a support frame according to claim 11, hinder u. May even make it impossible. The feature group c ensures that the grippers and the pneumatic suction cups each have the same position with respect to one another and thus also with respect to the plate-shaped part to be transported. It can be seen that by dividing the functions "lifting and lowering" on the one hand and "holding or balancing" on the other hand to the feature groups a and b, and the connection of these feature groups a and b work together through the feature group c all three feature groups to solve the task. Since the suction cups according to feature group b only grasp the plate-shaped parts on their side faces, it is advantageously possible to push the plate-shaped parts without gaps from below onto plate-shaped parts already in the hanging frame. This avoids disadvantageous gaps there (see also the later explanations). Likewise, a gapless abutting of the lateral vertical edges of the plate-shaped parts against any other adjacent plate-shaped parts is possible. The same applies to the lower edge of the plate-shaped part, provided that after it has been introduced into the hanging frame, another plate-shaped part is pushed against it from below.

Bevorzugte Anordnungen der Merkmalsgruppen a und b ergeben sich aus den Ansprüchen 2 und 3. Hiermit kann der plattenförmige Teil von unten mit entsprechendem Druck gehoben und im oberen Bereich gegen etwaiges seitliches Abkippen durch die Merkmalsgruppe b gesichert sein.Preferred arrangements of the feature groups a and b result from claims 2 and 3. This allows the plate-shaped part to be lifted from below with appropriate pressure and secured in the upper area against any lateral tipping by the feature group b.

Die Greiferausbildung gemäß Anspruch 4 ermöglicht eine hinreichende Kraftübertragung, ohne daß es notwendig ist, am zu bewegenden plattenförmigen Teil gesonderte Aussparungen, Durchbrüche oder dergleichen für das Eindringen eines Greiferteiles vorsehen zu müssen. Die Merkmale des Anspruches 5 sichern zum einen, daß die Greifer (in der Regel sind mehrere Greifer vorgesehen) jeweils mit ihrer Griffläche oder -spitze den gleichen Abstand vom Rand des plattenförmigen Teiles haben. Zum anderen drücken beim Hochheben des plattenförmigen Teiles die Auflager gegen dessen unteren Rand (gemäß Merkmalsgruppe c des Anspruches 1 ist das Auflager am Hebergerüst mit angebracht), so daß für das Anheben der relativ schweren plattenförmigen Teile in dieser bevorzugten Ausgestaltung der Erfindung die Auflager mit zur Verfügung stehen.The gripper design according to claim 4 enables sufficient power transmission without it being necessary to provide separate recesses, openings or the like for the penetration of a gripper part on the plate-shaped part to be moved. The features of claim 5 ensure on the one hand that the grippers (usually several grippers are provided) each have the same distance from the edge of the plate-shaped part with their gripping surface or tip. On the other hand, when lifting the plate-shaped part, the supports press against its lower edge (According to feature group c of claim 1, the support is also attached to the lifting frame), so that the supports are available for lifting the relatively heavy plate-shaped parts in this preferred embodiment of the invention.

Die Anordnung nach der Erfindung wird vorteilhaft und ebenfalls in bevorzugter Ausführungsform der Erfindung durch ein Traggestell gemäß Anspruch 11 ergänzt, das zum einen die Unterbringung der plattenförmigen Teile ermöglicht, solange diese noch nicht in die Hängegerüste eingehängt worden sind. Zum anderen sind die Traggestelle so gestaltet, daß sie das Einführen des Hebegerüstes mit Greifern und Saugnäpfen und Herausheben der plattenförmigen Teile bzw. deren Absenken und danach das Wiederentfernen des Hebegerüstes gestatten.The arrangement according to the invention is advantageous and also, in a preferred embodiment of the invention, supplemented by a support frame according to claim 11, which on the one hand enables the plate-shaped parts to be accommodated as long as they have not yet been suspended in the hanging scaffolding. On the other hand, the support frames are designed in such a way that they allow the lifting scaffold to be inserted with grippers and suction cups and the plate-shaped parts to be lifted out or lowered and then the lifting scaffold to be removed again.

Die Erfindung ist besonders im Zusammenwirken mit die Ränder der plattenförmigen Teile federnd-klemmend ergreifenden Hängegerüsten gemäß den Ansprüchen 14 bis 16 von Vorteil. Das Einschieben der Ränder solcher plattenförmiger Teile zwischen die federnden Klemmorgane der Hängegerüste erfordert nämlich eine nicht unerhebliche Kraft, die aber mit einem Hängegerüst nach der Erfindung aufgebracht werden kann. Das gleiche gilt für das Herausziehen der Ränder der plattenförmigen Teile aus diesen federnden Klemmhalterungen.The invention is particularly advantageous in cooperation with the scaffolding of the plate-shaped parts which resiliently grip hanging scaffolding according to claims 14 to 16. The insertion of the edges of such plate-shaped parts between the resilient clamping members of the suspended scaffolding requires a not inconsiderable force, but this can be applied with a suspended scaffold according to the invention. The same applies to pulling out the edges of the plate-shaped parts from these resilient clamping brackets.

Weitere Vorteile und Merkmale der Erfindung sind den weiteren Unteransprüchen, sowie der nachfolgenden Beschreibung und der zugehörigen Zeichnung von erfindungsgemäßen Ausführungsbeispielen zu entnehmen. In der Zeichnung zeigt:

Fig. 1:
ein Hebegerüst nach der Erfindung in der Frontansicht mit plattenförmigem Teil,
Fig. 2:
eine Seitenansicht zu Fig. 1,
Fig. 3:
ein Traggestell nach der Erfindung in der Frontansicht,
Fig. 4:
die zu Fig. 3 gehörende Seitenansicht,
Fig. 5:
in der Frontansicht ein Anwendungsbeispiel der Erfindung,
Fig. 6:
ein Detail der Fig. 5 in vergrößertem Maßstab,
Fig. 7:
eine Ansicht auf Fig. 6 gemäß dem Pfeil VII,
Fig. 8:
ein weiteres Ausführungsbeispiel der Erfindung, ebenfalls in der Frontalansicht,
Fig. 8a:
die Seitenansicht zu Fig. 8,
Fig 9:
im demgegenüber vergrößerten Maßstab einen Schnitt gemäß der Linie IX - IX in Fig. 8.
Further advantages and features of the invention can be found in the further subclaims, as well as in the following description and the associated drawing of exemplary embodiments according to the invention. The drawing shows:
Fig. 1:
a lifting frame according to the invention in the front view with plate-shaped part,
Fig. 2:
2 shows a side view of FIG. 1,
Fig. 3:
a support frame according to the invention in front view,
Fig. 4:
3, the side view belonging to FIG.
Fig. 5:
in the front view an application example of the invention,
Fig. 6:
5 shows a detail of FIG. 5 on an enlarged scale,
Fig. 7:
6 according to arrow VII,
Fig. 8:
another embodiment of the invention, also in the front view,
8a:
the side view of Fig. 8,
Fig 9:
on the other hand, on an enlarged scale, a section along the line IX-IX in FIG. 8.

Zunächst wird anhand der Fig. 1, 2 das Hebergerüst mit den zugehörigen Bauteilen erläutert. Das allgemein mit 1 bezifferte Hebegerüst besitzt in seinem unteren Bereich mehrere Greifer 2, die aus je zwei zangenartigen Hälften 3 bestehen, die mit Greifflächen oder gemäß der dargestellten und bevorzugten Ausführungsform Greifspitzen 4 im unteren Bereich des zu transportierenden plattenförmigen Teiles 5 angreifen und zwar unter Druck einer Feder 6. Dabei wird die in Fig. 2 links dargestellte Zangenhälfte 3 um den Anlagepunkt 7 eines zapfenartigen Widerlagers 8 verschwenkt. Zum Greifer gehört ferner ein Auflager 9, das sich in relativ geringem Abstand von den Greiferspitzen 4 befindet und zur Auflage der unteren Kante 5ʹ des plattenförmigen Teiles dient. Die in Fig. 2 rechts dargestellte Greiferhälfte ist, wie bei 10 angedeutet, fest am Hebegerüst angebracht und überträgt dessen Hebekraft sowohl über das Auflager 9 als auch über die Greiferspitzen 4 auf das plattenförmige Teil 5. Am Hebegerüst befindet sich ein Stößell 11, der von einem Teil 12 (Magnet, Pneumatik oder dergleichen) in Pfeilrichtung 13 bewegt werden kann und bei Auftreffen auf den unteren Hebelarm 3ʹ der in Fig. 2 links dargestellten beweglichen Greiferhälfte die Halte- oder Klemmkraft der Greiferspitzen 4 an dem plattenförmigen Teil 5 aufhebt. Wenn zugleich auch die Pneumatikwirkung der noch zu erläuternden pneumatischen Halterungen aufgehoben wird - dies kann durch synchron gesteuerte Mittel, z.B. eine synchron gesteuerte Pneumatik geschehen - so ist dann der plattenförmige Teil 5 vom Hebegerüst freigegeben.First, the lifting frame with the associated components is explained with reference to FIGS. 1, 2. The lifting frame, generally numbered 1, has in its lower area several grippers 2, each consisting of two pliers-like halves 3, which have gripping surfaces or, according to the illustrated and preferred embodiment, gripping tips 4 in the lower area of the plate-shaped to be transported Attack part 5, namely under pressure of a spring 6. The pliers half 3 shown on the left in FIG. 2 is pivoted about the contact point 7 of a peg-like abutment 8. The gripper also includes a support 9, which is located at a relatively short distance from the gripper tips 4 and serves to support the lower edge 5ʹ of the plate-shaped part. The gripper half shown on the right in FIG. 2 is, as indicated at 10, firmly attached to the lifting frame and transmits its lifting force to the plate-shaped part 5 both via the support 9 and via the gripper tips 4. A ram 11 is located on the lifting frame a part 12 (magnet, pneumatics or the like) can be moved in the direction of arrow 13 and, when hitting the lower lever arm 3ʹ of the movable gripper half shown in FIG. 2, cancels the holding or clamping force of the gripper tips 4 on the plate-shaped part 5. If at the same time the pneumatic effect of the pneumatic brackets still to be explained is canceled - this can be done by synchronously controlled means, for example synchronously controlled pneumatics - then the plate-shaped part 5 is released from the lifting frame.

Im oberen Bereich des Hebegerüstes sind pneumatisch unter Unterdruck zu setzende Saugnäpfe 15 vorgesehen, die an der Seitenfläche 5ʺ des plattenförmigen Teiles 5 angreifen und diesen ausbalancieren, insbesondere gegen ein unbeabsichtigtes Wegkippen in Richtung des Doppelpfeiles 14 sichern. Die Saugnäpfe 15 sind über das Hebegerüst 1 mit den Greifern 2 verbunden, d.h. die Lage dieser Teile zueinander ist fix. Fig. 1 zeigt, daß mehrere Greifer 2 nebeneinander und im Abstand voneinander auf einer waagerechten Linie 16 vorgesehen sein können. Auch im oberen Bereich des Hebegerüstes können, wie Fig. 1 zeigt, mehrere Saugnäpfe 15 im Abstand nebeneinander und bevorzugt auch auf einer waagerechten Linie vorgesehen sein. Die Saugnäpfe haben auch einen solchen Abstand vom Rand des jeweiligen plattenförmigen Teiles, daß die Saugnäpfe dabei nicht die nachstehend geschilderte Wirkung der Erfindung hindern:
Es ist ersichtlich, daß mit der Erfindung die plattenförmigen Teile sowohl mit ihren unteren und oberen Rändern 5ʹ, 5‴ als auch mit ihren Seitenrändern 5ʺ ʺ lückenlos an jeweils darüber oder darunter befindliche oder benachbarte plattenförmige Teile, die ebenfalls zu galvanisieren sind, anstoßen können. Dieses lückenlose Anstoßen ist wichtig, da im Falle eines Abstandes des Randes eines plattenförmigen Teiles vom Rand eines benachbarten plattenförmigen Teiles im galvanischen Bad sich in diesem Spalt und darum herum Ablagerungen bilden und zwar etwa in Form eines sogenannten "Hundeknochens". Solche Ablagerungen sind nachteilig, weil die dabei entstehende Schichtdicke des galvanischen Niederschlages außerhalb der zulässigen Toleranzen liegen kann.In the upper area of the lifting frame, suction cups 15, which are to be set pneumatically under vacuum, are provided, which act on the side surface 5 pl of the plate-shaped part 5 and balance them, in particular to prevent them from accidentally tipping away in the direction of the double arrow 14. The suction cups 15 are connected to the grippers 2 via the lifting frame 1, ie the position of these parts relative to one another is fixed. Fig. 1 shows that several grippers 2 are provided side by side and at a distance from each other on a horizontal line 16 could be. 1, a plurality of suction cups 15 can also be provided next to one another at a distance and preferably also on a horizontal line. The suction cups are also at such a distance from the edge of the respective plate-shaped part that the suction cups do not hinder the effect of the invention described below:
It can be seen that with the invention, the plate-shaped parts with both their lower and upper edges 5ʹ, 5 ‴ and with their side edges 5ʺ ʺ without gaps to each above or below or adjacent plate-shaped parts, which are also to be electroplated. This gapless bumping is important because in the event of a distance between the edge of a plate-shaped part and the edge of an adjacent plate-shaped part in the galvanic bath, deposits form in and around this gap, in the form of a so-called "dog bone". Such deposits are disadvantageous because the resulting layer thickness of the galvanic deposit can lie outside the permissible tolerances.

Die Saugnäpfe selber können einen relativ kleinen Durchmesser haben, da sie nur Balancierkräfte, nicht aber Hebe-oder Absenkkräfte aufbringen müssen.The suction cups themselves can have a relatively small diameter, since they only have to apply balancing forces, but not lifting or lowering forces.

Das allgemein mit 17 bezifferte Traggestell gemäß den Fig. 3, 4 hat eine Reihe von Schlitzen 18, die sich nur über eine begrenzte Länge 1 erstrecken und darunter einen freien Raum von einer Höhe h übrig lassen. Die plattenförmigen Teile sind wiederum mit 5 beziffert. Die Schlitze 18 sind so dimensioniert, daß die plattenförmigen Teile darin einsteckbar sind. Hiermit wird innerhalb eines Traggestelles eine Reihe von Fächern 19 geschaffen (im vorliegenden Ausführungsbeispiel 20 Fächer), in denen hintereinander und auf kleinem Raum die plattenförmigen Teile 5 unterbringbar sind. Der Abstand h der Unterkante 5ʹ des plattenförmigen Teiles 5 vom Holm 21 des Traggestelles erlaubt das Einbringen der Greifer 5 etwa in Richtung des Pfeiles 22 (Fig. 4). Da die Länge 1 der Schlitze 18 begrenzt ist, ist über ihnen genügend freier Raum zum Ansetzen der Saugnäpfe etwa gemäß Pfeil 23 vorhanden. Sobald Greifer und Saugnäpfe sich in der Hebeposition befinden, kann das jeweilige plattenförmige Teil 5 in Heberichtung 24 nach oben ausgehoben und in das jeweilige Hängegestell (siehe die nachstehenden Ausführungen) eingesetzt werden. Die Absenkrichtung ist mit 24ʹ beziffert.3, 4 has a series of slots 18 which only extend over a limited length 1 and below which a free space of a height h is left. The plate-shaped parts are again numbered 5. The slots 18 are dimensioned so that the plate-shaped parts can be inserted therein. In this way, a number of compartments 19 are created within a support frame (20 compartments in the present exemplary embodiment), in which the plate-shaped parts 5 can be accommodated one behind the other and in a small space. The distance h of the lower edge 5ʹ of the plate-shaped part 5 from the spar 21 of the support frame allows the introduction of the gripper 5 approximately in the direction of arrow 22 (FIG. 4). Since the length 1 of the slots 18 is limited, there is sufficient free space above them for attaching the suction cups, for example according to arrow 23. As soon as the gripper and suction cups are in the lifting position, the respective plate-shaped part 5 can be lifted upwards in the lifting direction 24 and inserted into the respective hanging frame (see the explanations below). The lowering direction is 24ʹ.

Im Ausführungsbeispiel der Fig. 5 bis 7 besteht das Hängegestell aus zwei Gestellstreben 25, welche die Leiterplatten 5 halten. An den Gestellstreben 25 sind Paare zusammengehörender Klemmfedern 26 vorgesehen, die in diesem Beispiel leicht abgewinkelt sind und damit an der Stelle 27 die dazwischen eingeschobene Leiterplatte mit federnder Klemmkraft halten. Dies ist nur schematisch in Fig. 5 dargestellt. Es ist ersichtlich, daß die Formgebung der Federn 26 so ist, daß die Leiterplatten entweder in Pfeilrichtung 28 oder auch in Pfeilrichtung 29, d.h. parallel zu den Gestellstreben 25 zwischen die Federnpaare geschoben bzw. wieder herausgezogen werden können. Der Galvanisierstrom wird über die Gestellstreben 25 und die Federn 26 den Leiterplatten 5 zugeführt. Fig. 5 zeigt, daß sich die Federn 26 von den Gestellstreben 25 her frei erstrecken, so daß die Gestellstreben selber nicht das Einschieben der Leiterplatten 5 behindern. Bevorzugt ragen die jeweiligen Federn in den Raum zwischen beide Gestellstreben 25 hinein, so daß eine gleichmäßige Galvanisierung erfolgt. 25ʹ ist eine beide Gestellstreben zum Hängegestell verbindende Traverse, auch Gestellträger genannt.In the embodiment of FIGS. 5 to 7, the hanging frame consists of two frame struts 25 which hold the circuit boards 5. On the frame struts 25, pairs of associated clamping springs 26 are provided, which in this example are slightly angled and thus hold the circuit board inserted between them with resilient clamping force at point 27. This is only shown schematically in FIG. 5. It can be seen that the shape of the springs 26 is such that the circuit boards can either be pushed in the direction of arrow 28 or in the direction of arrow 29, ie parallel to the frame struts 25 between the pairs of springs or pulled out again. The electroplating current is supplied to the printed circuit boards 5 via the frame struts 25 and the springs 26. 5 shows that the springs 26 extend freely from the frame struts 25 so that the frame struts themselves do not impede the insertion of the printed circuit boards 5. The respective springs preferably protrude into the space between the two frame struts 25, so that a uniform galvanization takes place. 25ʹ is a crossbar connecting both frame struts to the hanging frame, also called frame support.

Fig. 5 zeigt ferner, daß in einem Gestell mehrere Leiterplatten übereinander angeordnet werden können und daß auch in waagerechter Richtung mehrere Leiterplatten 5 vorgesehen sein können, da die Gestellstreben an jeder Seite eine Reihe von übereinander angeordneten Klemmfederpaaren aufweisen können.Fig. 5 also shows that several circuit boards can be arranged one above the other in a frame and that several circuit boards 5 can also be provided in the horizontal direction, since the frame struts can have a series of pairs of clamping springs arranged one above the other on each side.

Es ist ersichtlich, daß mit der davor beschriebenen, mit Greifern und Saugnäpfen arbeitenden Anordnung eine Leiterplatte in der beschriebenen Weise mit ihren Rändern zwischen die Klemmfedern 26 in die Klemm- und damit Galvanisierlage gebracht, sowie nach erfolgtem Galvanisieren wieder aus den Federn herausgezogen werden kann.It can be seen that with the arrangement described above, working with grippers and suction cups, a circuit board in the manner described can be brought with its edges between the clamping springs 26 into the clamping and thus electroplating position, and can be pulled out of the springs again after electroplating.

Ferner ist es möglich, daß die Leiterplatten 5 an ihren Seitenlängsrändern 5ʹ eine oder mehrere Öffnungen aufweisen, die in der Klemmhaltelage der Platten über Tragelemente der jeweiligen Gestellstreben greifen und damit zusätzlich zur Klemmhalterung durch die Federn einen Halt bzw. Sicherung der Leiterplatte 5 in ihrer Galvanisierposition darstellen.Furthermore, it is possible that the circuit boards 5 have at their side longitudinal edges 5ʹ one or more openings which engage in the clamped holding position of the plates via supporting elements of the respective frame struts and thus, in addition to the clamp holder by the springs, holding or securing the circuit board 5 in its electroplating position represent.

Ein Ausführungsbeispiel eines solchen, zusätzlichen Haltes ist in den Fig. 8, 8a, 9 dargestellt und nachstehend beschrieben.An embodiment of such an additional hold is shown in FIGS. 8, 8a, 9 and described below.

An den Gestellstreben 30 sind links und rechts, d.h. ebenfalls zur jeweils gegenüberliegenden Gestellstrebe him gerichtet, Federpaare vorgesehen, die aus fest an den Gestellstreben angebrachten Federn 31 und damit zusammenwirkenden, aber um die Längsachsen 32 von Wellen 33 mit den Wellen verschwenkbaren Federn 34 bestehen. Fig. 9 zeigt die Federpaare 31, 34 in der Klemmstellung. Die Leiterplatten 5 nehmen dabei die strichpunktiert angedeutete Lage ein. Durch Schwenken der in Fig. 9 linken Welle im Gegenuhrzeigersinn und der in Fig. 9 rechten Welle im Uhrzeigersinn werden die Federn 34 aus der Klemmlage gebracht und die Platten 5 können abgenommen bzw. neue Platten in die Galvanisierposition eingebracht werden. Durch Drehen der linken Welle 33 im Uhrzeigersinn und der rechten Welle 33 im Gegenuhrzeigersinn wird die Klemmlage wieder hergestellt. Dieses Ausführungsbeispiel der Erfindung eignet sich besonders zur automatisierten Einbringung der Leiterplatten in die Klemmlage und Wiederherausnehmen der Leiterplatten mittels einer aus Greifer und Saugnäpfen bestehenden Anordnung gemäß der Erfindung, da dieser Transport der Leiterplatten maschinell mit einer entsprechend synchron dazu erfolgenden Drehung der Wellen 33 (wie vorstehend beschrieben) gekoppelt werden kann. Hierzu kann (siehe Fig. 8) ein Drehmagnet 35, der auf eines der Enden 36 der Wellen 33 aufgefahren wird, dieses im vorbeschriebenen Sinne um ihre Achse 32 drehen. Durch zwei Mitnehmerzahnräder wird dann die andere Welle 33 im Gegendrehsinn mit bewegt.On the frame struts 30 are left and right, i.e. also directed towards the respective opposite frame strut him, pairs of springs are provided which consist of springs 31 fixedly attached to the frame struts and cooperating therewith, but springs 34 pivotable about the longitudinal axes 32 of shafts 33 with the shafts. Fig. 9 shows the spring pairs 31, 34 in the clamping position. The circuit boards 5 assume the position indicated by dash-dotted lines. By pivoting the shaft on the left in FIG. 9 counterclockwise and the shaft on the right in FIG. 9 clockwise, the springs 34 are brought out of the clamped position and the plates 5 can be removed or new plates can be inserted into the electroplating position. By turning the left shaft 33 clockwise and the right shaft 33 counterclockwise, the clamping position is restored. This exemplary embodiment of the invention is particularly suitable for the automated introduction of the printed circuit boards into the clamping position and removal of the printed circuit boards by means of an arrangement according to the invention consisting of grippers and suction cups, since this transport of the printed circuit boards is carried out mechanically with a correspondingly synchronized rotation of the shafts 33 (as above described) can be coupled. For this purpose (see FIG. 8), a rotary magnet 35, which is moved onto one of the ends 36 of the shafts 33, can rotate it about its axis 32 in the sense described above. The other shaft 33 is then moved in the opposite direction by two driving gearwheels.

Im Ausführungsbeispiel der Fig. 8-9 sind ferner am Gestell Halte- oder Tragstifte 37 befestigt, über die die Platten 5 in der zur Galvanisierung dienenden Betriebslage (Klemmlage) mit nicht dargestellten Löchern steckbar sind. Diese Steckverbindung sichert die Leiterplatten 5 gegen ein Herunterfallen während der Montagephasen, in denen die Federn 31, 34 nicht mit Klemmkraft an den Leiterplatten anliegen. Die vorgenannten Löcher können in ihrem Durchmesser größer sein als der Durchmesser der Haltemittel (z. B. Haltestifte). Damit können die Greifer die jeweilige Leiterplatte nach dem Galvanisieren zunächst etwas nach unten ziehen und damit von den fixen Federn losreißen (sofern die Leiterplatten durch den Galvanisierprozeß daran angeklebt oder "angebacken" sein sollten). Anschließend kann die jeweilige Leiterplatte dann problemlos vom Gestell quer zur Plattenebene abgenommen werden.In the exemplary embodiment in FIGS. 8-9, holding or supporting pins 37 are also fastened to the frame, by means of which the plates 5 are in the operating position used for galvanization (Clamp position) with holes, not shown, can be inserted. This plug connection secures the circuit boards 5 against falling during the assembly phases, in which the springs 31, 34 do not rest against the circuit boards with clamping force. The diameter of the aforementioned holes can be larger than the diameter of the holding means (e.g. holding pins). With this, the grippers can first pull the respective circuit board down a little after galvanizing and thus tear it away from the fixed springs (provided that the circuit boards should be glued or "baked" to it by the galvanizing process). The respective circuit board can then be easily removed from the frame across the board level.

Im Ausführungsbeispiel der Fig. 8 - 9 werden also die Leiterplatten durch die Greifer nicht nach oben geschoben, sondern es erfolgt eine Bewegung in einer Richtung quer zur Plattenebene. Dies ist dann von Vorteil, wenn kein Platz zum Einschieben der Leiterplatten von oben oder von unten her besteht. Eine solche Bewegung ist mit einer Anordnung nach der Erfindung, z. B. gemäß dem Beispiel der Fig. 1, 2 ohne weiteres zu vermitteln.In the exemplary embodiment in FIGS. 8-9, the circuit boards are not pushed upwards by the grippers, but instead there is a movement in a direction transverse to the board plane. This is an advantage if there is no space for inserting the circuit boards from above or from below. Such movement is with an arrangement according to the invention, for. B. according to the example of FIGS. 1, 2 to convey easily.

Die dargestellten Federn sind entweder aus Runddraht oder auch aus Flachdraht (Flachband).The springs shown are either made of round wire or flat wire (ribbon).

Claims (16)

  1. Setup used to place board-shaped electroplating parts in or remove them from a suspended rack by means of which the parts are suspended in an electroplating bath, the setup comprising pneumatic suction cups that engage the parts, characterized by a combination of
    a) grippers that engage the respective board-shaped part (5) with force acting in the lifting direction (24) or lowering direction (25),
    b) pneumatic suction cups or the like (15) which engage in one or both lateral surfaces (5") of the board-shaped part and secure the same against lateral tipping (14),
    c) by a common lifting frame (1) to which the gripper (2) and suction cups (5) are attached.
  2. Setup in accordance with Claim 1, characterized in that the gripper (2) is located in the lower area of the lifting frame (1).
  3. Setup in accordance with Claim 1 or 2, characterized in that the suction cups (15) are located in the lower area of the lifting frame.
  4. Setup in accordance with one of Claims 1 to 3, characterized in that each gripper (2) consists of two pincer-like halves (3) under spring pressure (6), the halves preferably being tapered.
  5. Setup in accordance with one of Claims 1 to 4, characterized in that the grippers (2) respectively have one support (9) for the bottom edge (5') of the board-shaped part (5), the supports (9) being at a relatively small distance from the engaging surfaces or tips (4) of the gripper (2).
  6. Setup in accordance with one of Claims 1 to 5, characterized in that the pincer halves (3) are in the form of a two-armed lever, their engaging surfaces or tips being located at one end of the lever and the pressure spring (6) at the other end.
  7. Setup in accordance with one of Claims 1 to 6, characterized in that on the lifting frame (1) there is a ram (11) with associated actuating mechanism (12) used to swivel a moving pincer half from its holding position to its release position.
  8. Setup in accordance with Claim 7, characterized in that the other, stationary pincer half is immovably attached (10) to the lifting frame (1), including the respective support (9).
  9. Setup in accordance with one of Claims 1 to 8, characterized in that several grippers (2) are located at a distance from each other on a horizontal line (16).
  10. Setup in accordance with one of Claims 1 to 9, characterized in that several suction cups or the like (15) are located at a distance from each other and also at a distance from the respective edges of the board-shaped part.
  11. Setup in accordance with one of Claims 1 to 10, characterized by a load-bearing rack (17) with guides (18) for the accommodation of a number of board-shaped parts (5), space of height (h) being provided in the load-bearing rack beneath the guides (18) for movement of the grippers (2) into or out of the lifting position, and there is furthermore space on the side of the guides for the mounting and removal of the suction cups (15).
  12. Setup in accordance with Claim 11, characterized in that several guides (18) and compartments (19) formed therefrom are provided for accommodation of a board-shaped part (5).
  13. Setup in accordance with Claim 11 or 12, characterized in that the guides are in the form of slots (18).
  14. Setup in accordance with one of Claims 1 to 13, characterized by their combination with a suspension rack that has two parallel rack struts (25; 30) at a distance from each other with inherently resilient clamp mounts (26; 31, 34), these clamp mounts protruding freely from each rack strut, namely preferably into the space between these two rack struts, and means being provided or the clamp mounts being designed in such a way that it is possible to insert or remove the respective longitudinal edges of the printed circuit boards in or from the resilient clamp mount of the respective rack with the help of this setup.
  15. Setup in accordance with one of Claims 1 to 14, characterized in that the associated printed circuit boards (5) are provided with at least one opening, preferably oblong holes, on their longitudinal edges, which in the clamped position of the respective printed circuit boards engages or engage a supporting element of the respective rack strut, and that means are provided to effect movement of the printed circuit board in a direction perpendicular to its plane with the lifting frame in accordance with this setup.
  16. Setup in accordance with Claim 14 or 15, characterized by the coordinated control of the movement of the lifting frame and its elements on the one hand and the loading and unloading of the rack structure on the other.
EP87101189A 1986-02-28 1987-01-28 Arrangement for leading parts to be galvanized to or from a suspended rack Expired - Lifetime EP0237736B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606493 1986-02-28
DE19863606493 DE3606493A1 (en) 1986-02-28 1986-02-28 ARRANGEMENT FOR PUTTING PARTS TO BE GALVANIZED INTO OR FROM A HANGING RACK

Publications (2)

Publication Number Publication Date
EP0237736A1 EP0237736A1 (en) 1987-09-23
EP0237736B1 true EP0237736B1 (en) 1991-07-31

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EP87101189A Expired - Lifetime EP0237736B1 (en) 1986-02-28 1987-01-28 Arrangement for leading parts to be galvanized to or from a suspended rack

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US (1) US4787805A (en)
EP (1) EP0237736B1 (en)
JP (1) JPS62253799A (en)
CN (1) CN1015997B (en)
AT (1) AT391148B (en)
BG (1) BG47798A3 (en)
CA (1) CA1263479A (en)
CS (1) CS132787A2 (en)
DE (2) DE3606493A1 (en)
ES (1) ES2024438B3 (en)
SU (1) SU1544192A3 (en)

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SU1544192A3 (en) 1990-02-15
CS132787A2 (en) 1991-07-16
EP0237736A1 (en) 1987-09-23
CN87100988A (en) 1987-10-21
BG47798A3 (en) 1990-09-14
US4787805A (en) 1988-11-29
ATA44787A (en) 1990-02-15
ES2024438B3 (en) 1992-03-01
DE3771749D1 (en) 1991-09-05
DE3606493C2 (en) 1988-02-11
CA1263479A (en) 1989-11-28
CN1015997B (en) 1992-03-25
JPS62253799A (en) 1987-11-05
AT391148B (en) 1990-08-27
DE3606493A1 (en) 1987-09-03

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