AT90417B

AT90417B - Electroplating machine with rotating drum for plating sheet metal.

Info

Publication number: AT90417B
Authority: AT
Inventors: Max Dr Ing Schloetter
Original assignee: Max Dr Ing Schloetter
Priority date: 1917-02-27
Filing date: 1920-03-17
Publication date: 1922-12-27

Description

  

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   Bei den bekannten   Galvanisierapparatcn   mit rotierender Trommel werden die zu plattierenden Bleche entweder mittels klammerartiger Organe auf   dOll Trommelumfal1g   befestigt (D. R.   P.     23147)   oder zwischen je zwei benachbarten Speichenpaaren des aus einer Anzahl von Speichen   zusammengesetzten   trommelartigen Gestelles eingespannt   (D.   R. P.   294013).   Beide Einrichtungen haben den Nachteil, dass das Befestigen und Abnehmen der Bleche mühsam und zeitraubend ist und den noch schwerer ins Gewicht   fallenden Ubelstand. dass   die eingespannten Stellen der Bleche nicht plattiert werden.

   Der vorliegenden Erfindung gemäss werden diese Nachteile dadurch behoben, dass die Einrichtungen zum Festhalten der zu plattierenden blechtafeln aus auf dem Umfange der Galvanisiertrommel vorgesehenen Vorsprüngen, welche die Blechtafeln gegen seitliche   Verschiebungen sichern, und aus   ausserhalb der Trommel gelagerten Druckorganen oder aus pneumatischen   Saugeinriehtungen   bestehen, welche die Blechtafeln während ihres 
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 Kugeln, Walzen oder Hebel verwendet werden, die entweder aus einem isolierenden Material bestehen oder isoliert gelagert sind,
Die Fig. 1 und 2 der die Erfindung beispielsweise veranschaulichenden Zeichnungen stellen einen   Galvanisierapparat   mit zwei Trommeln in Ansicht bzw. in Draufsicht dar.

   Die Fig. 3-8 zeigen verschiedene   Auführungsformen   der zum Festhalten der Blechtafeln dienenden Einrichtungen. 



    Bei dem Ausführungsbeispiel nach den Fig. 1 und 2 sind zwei Galvanisiertrommeln 9 hintereinander   angeordnet, die ungefähr zur Hälfte in den die Badeflüssigkeit enthaltenden Behälter 8 tauehen. Diese Trommeln bestehen aus Trommelkränzen 26 und aus sie miteinander verbindenden zu den Achsen   Jss   der Trommeln parallelen Stäben   29.   Die Trommelkränze 26 und die   Stäbe 29, welche, wie   die Fig. 2 zeigt. rechteckige Felder bilden, sind nach Art von   Bilderrahmen ausgekehlt.   In diese Rahmen passen die zu   plattierenden Blechtafeln hinein und sind dadurch gegen seitliche Verschiebungen auf dem Umfange der Galvanisiertrommel gesichert 1  
Die zu plattierenden Blechtafeln müssen, damit sie sich nicht verschieben, nicht auf ihrem ganzen Umfang gestützt werden ;

   es genügt, sie an einzelnen Punkten zu stützen und zu diesem Zwecke auf dem 
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 gestellt ist. 



   Um zu verhindern, dass die zu plattierenden Blechtafeln während dei Drehung der Galvanisiertrommel von dieser herabfallen, werden sie während ihres Weges durch das Bad von ausserhalb der Trommel gelagerten Druckorganen an die Trommel angedrückt gehalten. Die zu diesem Zwecke dienenden Einrichtungen sind in den Fig. 4-8 dargestellt. 



   In zu den Trommelkränzen 26 konzentrischen, durch Querleisten 31 verbundenen Rahmen 33 (Fig. 4) sind Walzen 30 drehbar gelagert, welche die durch die   Vorsprünge   27 gegen seitliche Verschiebung gesicherten Blechtafeln 28 an die   Galvanisiertrommel   angedrückt halten. Bei der Ausführungsform nach 
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   In the known galvanizing apparatus with rotating drums, the metal sheets to be plated are either attached to the drum case by means of clamp-like organs (D. R. P. 23147) or clamped between two adjacent pairs of spokes of the drum-like frame made up of a number of spokes (D. R. P. 294013). Both devices have the disadvantage that the attachment and removal of the metal sheets is tedious and time-consuming, and the problem is even more serious. that the clamped areas of the sheets are not plated.

   According to the present invention, these disadvantages are eliminated in that the devices for holding the metal sheets to be plated consist of projections provided on the circumference of the galvanizing drum, which secure the metal sheets against lateral displacement, and pressure elements mounted outside the drum or pneumatic suction units which the sheet metal during their
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 Balls, rollers or levers are used which either consist of an insulating material or are mounted in an insulated manner,
Figures 1 and 2 of the drawings illustrating the invention, for example, show a two-drum plating apparatus in elevation and plan view respectively.

   3-8 show various embodiments of the devices used to hold the metal sheets in place.



    In the embodiment according to FIGS. 1 and 2, two electroplating drums 9 are arranged one behind the other, about half of which thaw into the container 8 containing the bathing liquid. These drums consist of drum rings 26 and bars 29 connecting them to one another and parallel to the axes Jss of the drums. The drum rings 26 and the bars 29, which, as FIG. 2 shows. Forming rectangular fields are grooved like picture frames. The metal sheets to be plated fit into these frames and are thus secured against lateral displacement on the circumference of the galvanizing drum 1
The metal sheets to be clad do not have to be supported over their entire circumference so that they do not shift;

   it suffices to support them at individual points and for this purpose on the
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 is posed.



   In order to prevent the metal sheets to be plated falling from the galvanizing drum while it is rotating, they are kept pressed against the drum by pressure elements mounted outside the drum as they travel through the bath. The facilities used for this purpose are shown in Figs. 4-8.



   In frames 33 (FIG. 4) which are concentric to the drum rims 26 and are connected by transverse strips 31, rollers 30 are rotatably mounted and hold the metal sheets 28 secured against lateral displacement by the projections 27 pressed against the galvanizing drum. In the embodiment according to
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Claims

PATENT CLAIMS: 1. Electroplating machine with rotating drum for plating sheet metal that is on! The circumference of the drum is held in place when the drum is rotated through the electrolytic bath, characterized in that the device for holding the metal sheets in place consists of projections provided on the circumference of the galvanizing drum, which secure the metal sheets against lateral displacement, and from outside the drum stored. insulating pressure elements, such as springs, balls, Rolls, levers or pneumatic suction devices that keep the metal sheets pressed against the drum as they move through the bath.

2. Electroplating apparatus according to claim 1, characterized in that the projections serving to secure the sheet metal panels against lateral displacement are formed by grooves in the drum wreaths and their connecting strips.

3. Electroplating apparatus according to claim 1, characterized in that projections are arranged on the circumference of the electroplating drum to secure the sheet metal panels against lateral displacement, which projections support the edges of the metal sheets only at individual points.

4. Electroplating apparatus according to claim 1 and 3, characterized in that the to secure the Metal sheets are resilient or movable against lateral displacement on the galvanizing drum (9) provided forespliinge (27).

5. Embodiment of the electroplating apparatus according to claim 1, characterized in that levers which are loaded on one side and mounted outside the drum are provided for pressing the metal sheets against the circumference of the drum.

6. Electroplating apparatus according to claims 1-5. characterized in that two drums are arranged one behind the other in such a way that the metal sheets detaching from the first drum are automatically fed to the second drum after appropriate cleaning by means of a suitable device.

7. Electroplating apparatus according to claims 1-6, characterized in that for transferring the metal sheets from the first drum to the second, an inclined surface (12) is used, which leads the metal sheet detached from the first drum until it is removed from the the second drum provided means for holding has been detected.

8. Electroplating apparatus according to claims 1-7, characterized in that the contact elements connecting the metal sheets to the power source are fixedly or resiliently attached to the electroplating drum, 9. Embodiment of the device according to claim 8, characterized in that the contact elements connecting the metal sheets to the power source are arranged outside the electroplating drum in a fixed or or resilient manner.