DE1729538C - Continuously working plasticizing machine - Google Patents
Continuously working plasticizing machineInfo
- Publication number
- DE1729538C DE1729538C DE1729538C DE 1729538 C DE1729538 C DE 1729538C DE 1729538 C DE1729538 C DE 1729538C
- Authority
- DE
- Germany
- Prior art keywords
- housing
- machine
- sealing
- shafts
- elements
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims 3
- 230000000694 effects Effects 0.000 claims 2
- 238000004898 kneading Methods 0.000 claims 2
- 230000002146 bilateral Effects 0.000 claims 1
- 230000018109 developmental process Effects 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 230000001737 promoting Effects 0.000 claims 1
- 239000000565 sealant Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 230000003685 thermal hair damage Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 1
Description
Das Gehäuse 3 der Maschine überdeckt in einstellbarem Ausmaß die dichtenden Schneckenelemente 2. Im Beispiel wird dies erzielt durch eine axiale Verschiebbarkeit des Gehäuses 3 gegenüber den Arbeitswellen 1. Diese Möglichkeit ist im unteren Teil der Zeichnung dargestellt. Über Elemente 4, die Mutter und Spindel oder auch eine hydraulische Einheit umfassen, läßt sich in bekannter Weise das Gehäuse 3 in Pfeilrichtung verschieben. Eines der Elemente 4 ist an einem der beiden Lagerständer 5 befestigt.The housing 3 of the machine covers the sealing screw elements 2 to an adjustable extent. In the example, this is achieved by an axial displaceability of the housing 3 with respect to the working shafts 1. This possibility is in the lower part of the Drawing shown. Via elements 4, which include nut and spindle or a hydraulic unit, the housing 3 can be moved in a known manner in the direction of the arrow. One of the elements 4 is attached to one of the two bearing stands 5.
Im oberen Teil der Zeichnung ist die Möglichkeit dargestellt, die Überdeckung der dicntenden Schnekkenelemente 2 durch das Gehäuse 3 mittels Anfügen oder Wegnehmen eines oder mehrerer Gehäuseteile 6 die z. B. angeschraubt sein können, zu variieren. ' Im übrigen sind die Wellen 1 an beiden Maschinenenden in Lagern 7 gelagert. Diese können auch dicht am Gehäuse sitzen. Das Gehäuse 3 weist eine Produkt-Aufgabeöffnung 8 und eine Produktaustrittsöffnung 9 auf. Zu erkennen sind ferner Schnekkenelemente 10 des Verfahrensteiles der Maschine, die auf den Wellen I angeordnet sind.The upper part of the drawing shows the possibility of overlapping the thicntenden screw elements 2 through the housing 3 by adding or removing one or more housing parts 6 the z. B. can be screwed to vary. In addition, the shafts 1 are at both ends of the machine stored in warehouses 7. These can also sit close to the housing. The housing 3 has a Product feed opening 8 and a product outlet opening 9. Screw elements can also be seen 10 of the process part of the machine, which are arranged on the shafts I.
Hierzu 1 Blatt Zeichnungen 1 sheet of drawings
Claims (4)
Bereich der Wellendurchtritte durch die Genau- Auch Gleitringdichtungen weisen für den genannsewandung mit einem gehäuseeinwärts fördernden ten besonderen Verwendungsfall Nachteile auf. Gewinde kleiner Steigung versehen sind, das mit io Gerade bei höheren Drehzahlen der hier in Rede geringem Spiel in Gehäusebohrungen umläuft, stehenden Maschinen ist der Verschleiß sehr groß, dadurch gekennzeichnet, daß die Ge- Es treten auch größere Undichtheiten, aber auch winde auf separaten Schneckenelementen (2) als thermische Schädigungen des verarbeiteten Gutes ineinandergreifende Schneckengewinde mit Dicht- auf, die Rückstände und Festbackungen verursachen, profil ausgebildet sind, wobei der Überdek- i5 Der Erfindung liegt die Aufgabe zugrunde, die kungsgrad der Schneckenelemente 2 durch das Arbeitswellen bei einer Maschine der eingangs geGehäuse (3) einstellbar ist. nannten Gattung an ihrem Durchtritt am aus-1. Continuously operating plasticizing machine made of different types of plastic, but often caused a cooperating 5 with at least two parallel rupture of the seal in a housing when the machine was restarted. At higher speeds, for example from working shafts with bearings on both sides, with 200 rpm, there are also fundamental differences. B. Material difficulties.
The area of the shaft passages through the mechanical seals also have disadvantages for the named wall with a special application that feeds into the housing. Thread of small pitch are provided, which revolves with io Especially at higher speeds of the small play in question here in the housing bores, standing machines, the wear is very high, characterized in that the occurrence of larger leaks, but also winds on separate screw elements (2) as thermal damage to the processed goods, interlocking screw threads with sealing profiles, which cause residues and caking, are profiled, with the overdek- i 5 The invention is based on the task of reducing the degree of the screw elements 2 through the working shafts in a machine the inlet housing (3) is adjustable. named genus at their passage at the exit
lerdings ein schwieriges Dichtungsproblem an der So kann man derart vorgehen, daß das Gehäuse Austrittseite der Maschine mit sich, wo die Arbeits- gegenüber den axial ortsfesten Wellen axial verweilen bei ihrem Durchtritt durch das Maschinen- schiebbar ausgebildet ist, aber auch so, daß die WeI-gehäuse gegen dasselbe bzw. gegen die Lagerung 50 len gegenüber dem ortsfesten Gehäuse axial verabgedichtet werden müssen. Die Abdichtung ist noch schiebbar ausgebildet sind.the treatment of high polymer masses. The well-known developments of the invention provide several design, advantageous variants of the design of a single-sided bearing of the working shafts provided with screw and 45 adjustable overlap of the sealing screw kneading elements, all elements through the machine housing.
However, there is a difficult sealing problem on the machine so that the housing on the exit side of the machine, where the working shafts dwell axially with respect to the axially fixed shafts as they pass through the machine, is designed to be slidable, but also so that the shaft -housing against the same or against the storage 50 len against the stationary housing must be axially sealed. The seal is still designed to be slidable.
Family
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