DE548741C - Drying drum for rotogravure printing machines - Google Patents

Drying drum for rotogravure printing machines

Info

Publication number
DE548741C
DE548741C DESCH89941D DESC089941D DE548741C DE 548741 C DE548741 C DE 548741C DE SCH89941 D DESCH89941 D DE SCH89941D DE SC089941 D DESC089941 D DE SC089941D DE 548741 C DE548741 C DE 548741C
Authority
DE
Germany
Prior art keywords
printing machines
drum
drying drum
rotogravure printing
paper web
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
Application number
DESCH89941D
Other languages
German (de)
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.)
Schnellpressenfabrik Frankenthal Albert and Cie AG
Original Assignee
Schnellpressenfabrik Frankenthal Albert and Cie AG
Publication date
Priority to DESCH89941D priority Critical patent/DE548741C/en
Application granted granted Critical
Publication of DE548741C publication Critical patent/DE548741C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403Drying webs
    • B41F23/0416Drying webs by conduction
    • B41F23/042Drying webs by conduction using heated rolls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Description

Bei Rotationsdruckmaschinen zum Herstellen von Tiefdruck auf einer Papierbahn liegt allgemein zwischen den vorhergehenden und folgenden Druckwerken eine geheizte Trommel oder auch eine Platte, die dazu bestimmt ist, die Farbe auf dem Papier rascher zu trocknen. Die geheizte Trommel, über die die Papierbahn geführt wird, hat in der Regel einen geschlossenen Mantel, auf den die Papierbahn sich dicht auflegt. Dies hat zur Folge, daß das Papier außerordentlich heiß wird, ganz besonders, wenn die Maschine langsam läuft oder gar stillsteht. Die von der Papierbahn aufgenommene Wärme kann aber ohne übermäßige Verlängerung des Papierbahnweges oder ohne sonstige Vorrichtungen bis zum nächsten Druckwerk nicht in solcher Weise abgeleitet werden, wie es für die Erhaltung einer druckfähigen Oberfläche des Kupferzylinders notwendig ist. Das heiße Papier, das zugleich mehr oder minder elektrisch ist, beginnt die Oberfläche des Kupferzylinders zu zerstören, was sich beispielsweise darin äußert, daß die Oberfläche rauh wird und unter Umständen auch farbig anläuft, was wohl auf Festbrennen von Färb- und Papierteilchen und auch auf die durch chemische und elektrische Einflüsse herrührende Zersetzung des Kupfers zurückzuführen ist.In rotary printing machines for producing gravure printing lies on a paper web generally a heated drum between the preceding and following printing units or a plate that is designed to change the color of the paper more quickly dry. The heated drum over which the paper web is guided usually has a closed jacket on which the paper web lies tightly. This has to As a result, the paper gets extremely hot, especially when the machine is running runs slowly or even stands still. The heat absorbed by the paper web can but without excessive extension of the paper web path or without other devices until the next printing unit cannot be diverted in such a way as is necessary for the preservation of a printable surface of the copper cylinder is necessary. The hot paper that is more or less electric at the same time is, the surface of the copper cylinder begins to destroy, which is for example expresses the fact that the surface becomes rough and may also tarnish in color, what is probably due to the burning-on of dye and paper particles and also to the chemical and decomposition of the copper caused by electrical influences.

Um ein Überhitzen der auf der Heiztrommel aufliegenden Papierbahn zu vermeiden, hat man vorgeschlagen, auf der Außenfläche der Heiztrommeln Stäbe oder Gitter anzuordnen, damit die zu trocknende Bahn in einer bestimmten Entfernung von der heißen Trommelwand gehalten wird.To avoid overheating of the paper web lying on the heating drum, it has been proposed to arrange bars or grids on the outer surface of the heating drums, so that the web to be dried is at a certain distance from the hot drum wall is held.

Gemäß der Erfindung werden die Mittel, die dazu dienen, die Papierbahn nicht auf der heißen Wand der Trommel o. dgl. aufliegen zu lassen, verstellbar angeordnet in der Weise, daß einerseits die Entfernung der Heizkörper vom Papier geändert wird, andererseits auch auf bestimmte Stellen, so wie es z. B. das Druckerzeugnis erheischt, 'eingestellt werden können.According to the invention, the means that serve, the paper web is not To let the hot wall of the drum o Way that on the one hand the distance of the radiators from the paper is changed, on the other hand also to certain places, as it is z. B. the printed product required, 'set can be.

Die Abb. 1 und 2 der Zeichnung veranschaulichen beispielsweise zwei verschiedene Ausführungsformen.For example, Figures 1 and 2 of the drawing illustrate two different ones Embodiments.

In Abb. ι ist die umlaufende Heiztrommel a mit einem geschlossenen Mantel & versehen, auf dem Stäbe c angeordnet sind, über die die Papierbahn d mit der Trommel α läuft. Die Heizelemente/ liegen innerhalb des Mantels b und geben die Wärme durch diesen an die Papierbahn^ ab.In Fig. Ι the revolving heating drum a is provided with a closed jacket & on which rods c are arranged, over which the paper web d runs with the drum α . The heating elements / are inside the jacket b and give off the heat through this to the paper web ^.

Abb. 2 zeigt die gleiche Anordnung wie Abb. ι; nur fehlt hier der geschlossene Mantel δ, so daß die Heizelemente / unmittelbar auf die Papierbahn einwirken.Fig. 2 shows the same arrangement as Fig. Ι; only the closed coat is missing here δ, so that the heating elements / act directly on the paper web.

Die Heizelemente oder sonstige Heizung können so ausgebildet sein, daß während des Langsamganges der Maschine die Heizung vermindert und während des Stillstandes der Maschine abgestellt werden kann.The heating elements or other heating can be designed so that during the Slow speed of the machine reduces the heating and while the machine is at a standstill Machine can be turned off.

Claims (1)

65 Patentanspruch:65 claim: Trockentrommel für Rotationstiefdruckmaschinen, deren Umfang durch Stäbe, Gitter o. dgl. gebildet wird, dadurch gekennzeichnet, daß die Stäbe (c), Gitter o. dgl. radial zur Trommelachse oder auch in der Umfangsrichtung der Trommel verstellbar sind.Drying drum for rotogravure printing machines, the circumference of which is provided by rods, Grid o. The like. Is formed, characterized in that the bars (c), grids or the like. Can be adjusted radially to the drum axis or in the circumferential direction of the drum are. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DESCH89941D Drying drum for rotogravure printing machines Expired DE548741C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH89941D DE548741C (en) Drying drum for rotogravure printing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH89941D DE548741C (en) Drying drum for rotogravure printing machines

Publications (1)

Publication Number Publication Date
DE548741C true DE548741C (en) 1932-04-18

Family

ID=7444279

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH89941D Expired DE548741C (en) Drying drum for rotogravure printing machines

Country Status (1)

Country Link
DE (1) DE548741C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1223854B (en) * 1956-09-26 1966-09-01 Andreas Vilhelm Borch Madsen D Multi-color rotary printing machine for printing perforated webs conveyed by means of pin rollers
US3304626A (en) * 1964-04-27 1967-02-21 Leckner Borje Valentin Felt drying rollers and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1223854B (en) * 1956-09-26 1966-09-01 Andreas Vilhelm Borch Madsen D Multi-color rotary printing machine for printing perforated webs conveyed by means of pin rollers
US3304626A (en) * 1964-04-27 1967-02-21 Leckner Borje Valentin Felt drying rollers and the like

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