DE388251C - Round screen cylinder for paper, cardboard and similar machines - Google Patents

Round screen cylinder for paper, cardboard and similar machines

Info

Publication number
DE388251C
DE388251C DEM76499D DEM0076499D DE388251C DE 388251 C DE388251 C DE 388251C DE M76499 D DEM76499 D DE M76499D DE M0076499 D DEM0076499 D DE M0076499D DE 388251 C DE388251 C DE 388251C
Authority
DE
Germany
Prior art keywords
screen cylinder
paper
cardboard
cylinder
grooves
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
DEM76499D
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.)
AUGUST KOKEISL
Original Assignee
AUGUST KOKEISL
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 AUGUST KOKEISL filed Critical AUGUST KOKEISL
Priority to DEM76499D priority Critical patent/DE388251C/en
Application granted granted Critical
Publication of DE388251C publication Critical patent/DE388251C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/60Cylinder moulds

Landscapes

  • Paper (AREA)

Description

Rundsiebzylinder für Papier-, Pappen- und ähnliche Maschinen. Um bei den bei Papier- und Kartonmaschinen benutzten Rundsiebzylindern die Bildung von Wellen in. dem Trog bei schneller Drehung des Zylinders zu vermeiden, ist schon vorgeschlagen worden, den Innenumfang des Siebzylinders vollkommen glatt zu gestalten. Um die Siebfläche herzustellen, wurden diese Zylinder durch Stanzen mit schraubenförmig verlaufenden Nuten versehen, die zum Teil mit einer Drahtschraube ausgefüllt wurden.Round screen cylinder for paper, cardboard and similar machines. To at the cylinder molds used in paper and board machines the formation of Avoiding waves in the trough when the cylinder rotates quickly is nice has been proposed to make the inner circumference of the screen cylinder completely smooth. To create the screen surface, these cylinders were helical by punching with provided running grooves, which were partially filled with a wire screw.

Die Praxis hat bewiesen, daß es bei derartigen Rundsiebzylindern nicht möglich ist, mit Rücksicht auf das Stanzen eine derartige Dicke der Mäntel zu wählen, daß diese sich selbst tragen können. Es war daher notwendig, solche Zylinder nachträglich mit Tragrosetten zu versehen, die wiederum ein Aufwühlen des Stoffes bei der Drehung des Zylinders zur Folge hatten.Practice has shown that this is not the case with such cylinder molds it is possible to choose such a thickness of the sheaths with regard to the punching, that they can support themselves. It was therefore necessary to retrofit such cylinders to be provided with carrying rosettes, which in turn cause the fabric to be churned when it is turned of the cylinder.

Nach der Erfindung wird demgegenüber der Siebzylinder aus einem innen vollständig glatten; sich selbst tragenden Metallmantel gebildet, auf dessen Außenumfang längsscwie ringförmig oder schraubengangförmig verlaufende Nuten mit zum Innern des Siebzylinders hindurchgehenden Löchern derart eingearbeitet sind, daß zwischen den Nuten Stege zur Siebauflage stehen bleiben.According to the invention, on the other hand, the screen cylinder is made from an inside completely smooth; self-supporting metal jacket formed on its outer circumference Grooves running longitudinally, annularly or helically towards the inside of the screen cylinder through holes are incorporated so that between the grooves webs to the sieve support remain.

In der Zeichnung sind verschiedene Ausführungen derartiger Rundsiebzylinder dargestellt. Es zeigen Abb. i - und 2 im Quer- und Längsschnitt einen mit Längsnuten versehenen Zylinder, Abb. 3 in größerem Maßstab einen Teil des Mantels von Abb. i, Abb. 4 nm Längsschnitt einen mit kreisförmigen Nuten versehenen Zylinder und Abb. 5 den Zylinder in Ansicht.Various designs of such cylinder molds are shown in the drawing shown. Fig. I - and 2 show one with longitudinal grooves in transverse and longitudinal sections provided cylinder, Fig. 3 on a larger scale part of the jacket of Fig. i, Fig. 4 nm longitudinal section of a cylinder provided with circular grooves and Fig. 5 the cylinder in view.

Der Zylinder ist mit einem metallenen, nur an seinen Enden mit der Achse verbundenen Mantel a versehen, der so stark ausgebildet ist, daß er sich selbst ohne jede Innenversteifung tragen kann. Bei der in Abb. i bis 3 dargestellten Ausführung ist der Mantel mit Längsnuten b versehen, zwischen denen Längsrippen c verbleiben, auf denen der Siebbezug in bekannter Weise befestigt wird. Von den Nuten b führen Löcher d in das Innere des Zylinders. Um möglichst viel freien Durchgangsquerschnitt für das Siebwasser zu schaffen, können außer den Längsnuten b auch noch kieisförmige Nuten vorgesehen werden, wie dies in Abb. 2 und 3 veranschaulicht ist. Der in Abb. q, dargestellte Siebzylinder ist im wesentlichen mit kreisförmigen Nuten e versehen, zwischen denen Ringe f stehengeblieben sind. Auch hier können zur Vergrößerung des Durchgangsquerschnittes Längsnuten vorgesehen werden. Statt ringförmigerNuten können auch schraubenförmige Nuten angebracht werden.The cylinder is provided with a metal jacket a, which is connected to the axle only at its ends and which is made so strong that it can support itself without any internal stiffening. In the embodiment shown in Fig. I to 3, the jacket is provided with longitudinal grooves b, between which longitudinal ribs c remain, on which the screen cover is attached in a known manner. Holes d lead from the grooves b into the interior of the cylinder. In order to create as much free passage cross-section as possible for the white water, in addition to the longitudinal grooves b, kieis-shaped grooves can also be provided, as is illustrated in FIGS. 2 and 3. The screen cylinder shown in Fig. Q is essentially provided with circular grooves e, between which rings f have remained. Here, too, longitudinal grooves can be provided to enlarge the passage cross-section. Instead of annular grooves, helical grooves can also be made.

Claims (1)

PATENTANSPRUCH: Rundsiebzylinder für Papier-, Pappen-und ähnliche Maschinen, gekennzeichnet durch einen innen vollständig glatten, sich selbsttragenden Metallmantel, auf dessen Außenumfang längs- sowie ringförmig oder schraubengangförmig verlaufende Nuten mit zum Innern des Siebzylinders hindurchgehenden Löchern derart eingearbeitet sind, daß zwischen den Nuten Stege zur Siebauflage stehenbleiben. PATENT CLAIM: Round screen cylinder for paper, cardboard and similar machines, characterized by a completely smooth inside, self-supporting metal jacket, on the outer circumference of which longitudinal, ring-shaped or helical grooves with holes extending to the inside of the screen cylinder are incorporated in such a way that between the grooves The webs for the sieve support remain.
DEM76499D 1922-01-25 1922-01-25 Round screen cylinder for paper, cardboard and similar machines Expired DE388251C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM76499D DE388251C (en) 1922-01-25 1922-01-25 Round screen cylinder for paper, cardboard and similar machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM76499D DE388251C (en) 1922-01-25 1922-01-25 Round screen cylinder for paper, cardboard and similar machines

Publications (1)

Publication Number Publication Date
DE388251C true DE388251C (en) 1924-01-16

Family

ID=7317057

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM76499D Expired DE388251C (en) 1922-01-25 1922-01-25 Round screen cylinder for paper, cardboard and similar machines

Country Status (1)

Country Link
DE (1) DE388251C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855203C (en) * 1949-08-08 1952-11-10 William Edwin Knowles Trotman Screen cylinder for paper machines
DE1012817B (en) * 1953-04-14 1957-07-25 Bernhard Hoitz Dipl Ing Cylinder mold for paper machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855203C (en) * 1949-08-08 1952-11-10 William Edwin Knowles Trotman Screen cylinder for paper machines
DE1012817B (en) * 1953-04-14 1957-07-25 Bernhard Hoitz Dipl Ing Cylinder mold for paper machines

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