DE2146095A1 - Plasticising extruder - with rollers in planet paths around multiple screws - Google Patents

Plasticising extruder - with rollers in planet paths around multiple screws

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Publication number
DE2146095A1
DE2146095A1 DE19712146095 DE2146095A DE2146095A1 DE 2146095 A1 DE2146095 A1 DE 2146095A1 DE 19712146095 DE19712146095 DE 19712146095 DE 2146095 A DE2146095 A DE 2146095A DE 2146095 A1 DE2146095 A1 DE 2146095A1
Authority
DE
Germany
Prior art keywords
kneading
zones
plasticising
rollers
planet
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.)
Pending
Application number
DE19712146095
Other languages
German (de)
Inventor
Klaus χ 9000 Karl-Marx-Stadt Schumann
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.)
PLAST ELASTVERARBEITUNGSMASCH
Original Assignee
PLAST ELASTVERARBEITUNGSMASCH
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 PLAST ELASTVERARBEITUNGSMASCH filed Critical PLAST ELASTVERARBEITUNGSMASCH
Publication of DE2146095A1 publication Critical patent/DE2146095A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/485—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with three or more shafts provided with screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • B29B7/489—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Abstract

A continuous multi-screw extruder for plastics, with its screws meshing and rotating in the same sense, is furnished, in the plasticising zones with rollers arranged along a planetary path around the shaft of each screw; these paths intersect so that the rollers rotate about their own axes. Specifically, the shaft: roller diameter ratio does not exceed 4:1.

Description

Vorichtung zum I£!xtrudieren und kontinuierlichen Aufbereiten, insbesondere von plastischen Massen Die Erfindung betrifft eine Vorrichtung zum Extrudieren und kontinuierlichen Aufbereiten, insbesondere von plastischen r1assen, bestehend aus einem Mehrschneckenextruder mit kämmenden und sich gleichsinnig drehenden Schnecken.Device for extrusion and continuous processing, in particular of plastic masses The invention relates to a device for extruding and continuous processing, especially of plastic breeds, consisting of a multi-screw extruder with intermeshing and co-rotating screws.

ruder und kontinuierliche AuBbereitungEmaschinen sind in verschiedenen Ausfährungsformen bekannt. So ist ein Doppelschneckenextruder bekannt, dessen Schnecken ineinander greifen. Die Gewinenuten dieser Schnecken werden durch den eingreifenden Gewindesteg der jeweiligen Getenschnecke entlang einer Raumkurve nahezu vollständig abgedichtet. Zviischen den Börderzonen dieses Doppelschneckenextruders befinden sich Knetzonen aus wendelförmig anGeordneten Kurvenscheiben, die das zu mischende itIaterial umschaufeln.Rudder and continuous processing machines are in different Forms of execution known. So a twin screw extruder is known, its screws mesh. The grooves of these screws are made by the engaging Almost all of the thread web of the respective Gene worm along a space curve sealed. Located between the conveyor zones of this twin screw extruder kneading zones are made up of helically arranged cam disks that form the Shoveling itI material.

Diese technische Lösung führt zu einer befriedigenden Knetwirkung, erfordert aber für die Erzielung dieser .irkung Schneckenlängen, die das 25- oder 35 Fache des Schneckendurchmessers betragen. Aus diesem Grunde ist eine solche Maschine sehr kompliziert in ibrem Aufbau und der Bedienung. Die Anschaffungskosten für derartige Maschinen betragen mehr als das Dosnelte eines einfachen Doppelschneckenextrudes.This technical solution leads to a satisfactory kneading effect, but requires screw lengths to achieve this .effect that the 25- or 35 times the screw diameter. That is why such a machine is very complicated in its structure and operation. The cost of such machinery are more than the dose of a simple twin screw extruder.

ABerdem ist eine Vörrichtung zum Extrudieren und Aufbereiten bekannt, bei der eine zentrale Förderschnecke in Planetenförderschnecken eingreift. Diese greifen wiederum in die Verzahnung des die Planetenförderschnecken umgebenden Gehäuses ein, um das eingeführte pulverförmige, körnige oder flüssige Formmaterial zu kneten, zu mastizieren und zur Austrittsöffnung zu fördern.A device for extruding and processing is also known, in which a central screw conveyor engages planetary screw conveyors. These in turn engage in the toothing of the housing surrounding the planetary screw conveyors one to knead the introduced powdery, granular or liquid molding material, to masticate and to promote to the outlet opening.

Diese Vorrichtung ist in ihrem Gesamtaufbau wesentlich einfacher und demzufolge auch billiger. Mit ihr sind gute Ergebnisse bei wesentlich kürzeren Baulängen durch Ausnutzung eines Dünnschichtwalzeffektes erzielt v:rden. Der Nachteil dieser technischen Lösung besteht darin, daß die Fördercharakteristik der gesamten Einrichtung aus einer zusartinengesetzten Zwangs- und Schleppförderung besteht und keine exakt definierte Verweilzeit für einzelne Formmaterialteilchen bestimmbar ist.This device is much simpler in its overall structure and consequently also cheaper. With it you get good results with much shorter lengths achieved by using a thin-layer roller effect. The disadvantage of this technical solution is that the funding characteristics of the entire facility consists of an additional forced and drag conveyor and none exactly defined dwell time can be determined for individual molding material particles.

Ein weiterer Nachteil besteht darin, daß der rlanetenteil zur Durchführung verschiedener und mehrerer hintereinander folgender komplizierter Verarbeitungs- oder Aufbereitungs aufgaben nicht mehrfach variabel kombiniert werden kann.Another disadvantage is that the planetary part to carry out different and several consecutive complex processing or processing tasks cannot be combined in multiple ways.

Zweck der Erfindung ist es, durch eine schnelle und te Homogenisierung die Gesamtschneckenlänge bei gleicher Durchsatzleistung zu verkürzen, um durch exakt definierte Verweilzeit fir die einzelnen Formmaterialteilchen eine Überhitzung des zu verarbeitenden Plastmaterials zu verhindern. Aucrdeni soll tür den einsatz der verschiedenen Materialien der Mehrschneckenextruder mehrfach variabel kombinationsfähig gestaltet werden.The purpose of the invention is to homogenize quickly and effectively to shorten the total screw length with the same throughput in order to get through exactly Defined residence time for the individual molding material particles overheating of the to prevent plastic material to be processed. Aucrdeni is supposed to use the Different materials of the multi-screw extruder can be combined in multiple ways be designed.

Der Erfindung liegt die Aufgabe zugrunde, bei einem vertretbaren technischen Aufwand den Effekt der intensiven aber thermisch schonenden Dünnschichtverwalzung mit einem genau definierten Förderstrom zu kombinieren und eine für verschiedene Aufgaben anpa.ssungsfabige Vorrichtung zu schaffen.The invention is based on the object of a reasonable technical Effort the effect of the intensive but thermally gentle thin-layer rolling to be combined with a precisely defined flow rate and one for different Tasks to create adaptable devices.

Erfindungsgemäß ird das bereits lange Zeit offene Proleim, Wälzkörper bei Mehrschneckenextrudern einzusetzen, dadurch gelöst, daß in den Knet- und Plastizierzonen an sich bekannte Wälzkörper planetenartig um beide Zentralwellen auf sich schneidenden Führungsbahnen und um die eigene Achse rotierend angeordnet sind.According to the invention, the long-time open proleim, rolling body ird to be used in multi-screw extruders, solved in that in the kneading and plasticizing zones rolling elements known per se, intersecting like a planet around both central shafts Guideways and are arranged to rotate around their own axis.

Es wurde zefunden, daß das Verhältnis des Zentralwellendurchmessers in den Knet- oder Plastizierzonen zu dem Durchmesser des Wälzkörpers maximal 4 : 1 beträgt.It was found that the ratio of the central shaft diameter in the kneading or plasticizing zones to the diameter of the rolling element a maximum of 4: 1 is.

Entsprechend des zu verarbeitenden Materials werden die Zentralwellen und/oder die Wälzkörper in den Knet- und Plasti-zierzonen zylindrisch, kegelig, gewölbt oder verzahnt ausgebildet.The central shafts are based on the material to be processed and / or the rolling elements in the kneading and plasticizing zones are cylindrical, conical, curved or toothed.

Um besondere Mischeffekte zu erzielen, :-ird die Ausbildung der Oberflächen unterschiedlich kombiniert.In order to achieve special mixing effects: -ird the formation of the surfaces combined differently.

Durch die Planetenbewegung der umalufenden Wälzkörper um die beiden gleichsinnig drehenden Zentralwellen so?;ie deren Umlenkung und Ubergabe im Zwickelbereich auf die benachbarte Zentralrielle wird das sich zwischen den Zentralwellen ansam@elnde Material zwangsläufig in den Spalt zwischen diesen zellen, deren Oberfl'chen sich gegeneinanderverschieben, gedrückt. Durch die abwechselnde Bearbeitung der dünnen Materialschichten zwischen den sich gegeneinander und miteinander bewegenden Oberflächen und die Zwangsbewegung durch den Spalt der Zentralvellen im Zwickelbereich erfolgt ein sehr schnelles gleichmäßiges Plaswtizieren, Kneten, Mischen und Dispergieren.Due to the planetary motion of the rotating rolling elements around the two central shafts rotating in the same direction so?; ie their deflection and transfer in the gusset area that will be collected between the central waves on the adjacent central rial Material inevitably into the gap between these cells, whose surfaces are move against each other, pressed. By alternately processing the thin Layers of material between the surfaces moving against each other and with each other and the forced movement takes place through the gap of the central shafts in the gusset area very fast, uniform plaswtieren, kneading, mixing and dispersing.

Infolge der damit erzielten verbesserten Knetwirkung wurde die Baulänge des Doppelschneckenextruders verürzt.As a result of the improved kneading effect achieved in this way, the overall length was increased of the twin screw extruder shortened.

Durch die Kombination mit einem kämmenden Schneckenpaar erfolgt ein zeitlich definierter Zwangsfluß des zu verarbeitenden Materials durch die Knet- oder Plastizierzonen, wodurch es möglich ist, daß jedes Materialpartikelchen gleichmäßig der intensiven Bearbeitung unterzogen wird. Zur Begünstigung der Verweilzeit ro'::ie der ent- und Mischwirkung kann durch entsprechende Gestaltung der Verzahnung in der Knetzone eine cexen-oder gleichgerichtete Förderwirkung erzielt werden.The combination with a meshing pair of screws results in a time-defined forced flow of the material to be processed through the kneading or plasticizing zones, which makes it possible for each particle of material to be uniform the intensive processing is subjected. In favor of the Dwell time ro ':: ie the development and mixing effect can be achieved through appropriate design the intermeshing in the kneading zone achieves a cexen or rectified conveying effect will.

mit dieser erfinderischen Lösun ist es, neben der Srzeilung hoher Knet- und Mischeffektr möglich, eine Vielzahl bestehender Ansprücje auf Kombinationsmöglichkeiten zu erf@llen. Somit bietet die Erfindung alle Voraussetzungen für die konstruktive Bearbeitung nach einem Baukastensystem und die Anwendung ökonomischer Fertigungsprinzipien.With this inventive solution it is, besides the division, higher Kneading and mixing effects possible, a large number of existing requirements for possible combinations to be fulfilled. Thus, the invention provides all the prerequisites for the constructive Machining according to a modular system and the application of economical manufacturing principles.

Die Erfindung soll nachstehend an einem Ausfährungsbeispiel näher erläutert werden. In der zugehörigen Zeichnung zeigen: Fig. 1: einen @uerschnitt in den Knet- oder Plastizierzonen, Fig. 2: einen Längsschnitt durch einen erfindungsgemäßen Do @pelschneckenextruder.The invention is to be described in more detail below using an exemplary embodiment explained. The accompanying drawing shows: Fig. 1: a cross section in the kneading or plasticizing zones, FIG. 2: a longitudinal section through one according to the invention Do @ pel screw extruder.

Der Do@pelschneckenextruder besitzt ein Gehäuse 1 und zwei Zentralwellen 2; 3, die Schneckengänge 4; 5 außerhalb der Knet- oder Plastizierzonen 6; 7 besitzen.The double screw extruder has a housing 1 and two central shafts 2; 3, the worm flights 4; 5 outside the kneading or plasticizing zones 6; 7 own.

Innerhalb dieser wurden die Schneckengänge 4; 5 der Zentralwellen 2; 3 weggelassen und die Oberfläche ist entsprechend des Bearbeitungsverfahrens des @lastmaterials ausgebildet. Im Gehäuse 1 werden auf die sich schneidenden Fährungsbahnen 8 die Wälzkörper 9 geführt.Within this, the worm flights 4; 5 of the central waves 2; 3 is omitted and the surface is according to the machining process of the @lastmaterials formed. In the housing 1 are on the intersecting ferry tracks 8 the rolling elements 9 out.

Die Zentralwellen 2; 3 werden gleichsinnig angetrieben, wodurch die Wälzkörper 9 sich um die Zentralwellen 2; 3 und um ihre eigene Achse drehen. Es wurde gefunden, daß das Verhältnis der Zentralwellen 2; 3 in den Knet- oder Plastizierzonen 6; 7 zu den Durchmessern der Wälzkörper 9 maximal 4 : 1 betreten darf. Die Zentralvellen 2; 3, die wälzkörper 9 in den Knet- und Plastizierzonen 6; 7 sind bei der Verarbeitung von Pulver, plastischem oder flüssigem Material vorzugsweise zylindrisch, kegelig oder gewölbt.The central shafts 2; 3 are driven in the same direction, whereby the Rolling bodies 9 around the central shafts 2; 3 and rotate around its own axis. It it was found that the ratio of the central waves 2; 3 in the kneading or plasticizing zones 6; 7 to the diameters of the rolling elements 9 may enter a maximum of 4: 1. The central waves 2; 3, the rolling elements 9 in the kneading and plasticizing zones 6; 7 are in the process of processing of powder, plastic or liquid material, preferably cylindrical, conical or arched.

Bei Verarbeitung von Thermoplasten und zur Aufschmelzung in den Knet- und Plastizierzonen o; 7 werden diese mit Verzahnung oder mit Gewindegängen hergestellt.When processing thermoplastics and for melting in the kneading and plasticizing zones o; 7 these are made with teeth or with threads.

In den anet- und Tlastizierzonen s; 7 sind die Schneckengänge 4; 5, der Zentralwellen 2; 3 erfindungsgemäß gestaltet. Es ist ersichtlich, daß im Zwickelbereich 12 ein Spalt entsteht, wodurch ein besonderer Knet- und Dispergiereffekt durch die Ubergabe der Wälzkörper von einer .elle -zuf die andere, bei gleichzeitiger Änderung der wegungsrichtung erzeugt wird. Das im Zwickelbereich 12 be-Xindliche Material wird damit durch den Spalt der Zentralellen 2; 3, deren Oberflächen ich gegeneinander verschieben, gedrückt.In the anet and plasticization zones; 7 are the worm flights 4; 5, of the central shafts 2; 3 designed according to the invention. It can be seen that in the gusset area 12 a gap is created, which creates a special kneading and dispersing effect through the Transfer of the rolling elements from one .elle to the other, with simultaneous change the direction of movement is generated. The material in the gusset area 12 is thus through the gap of the central cells 2; 3 whose surfaces I oppose each other move, pressed.

Claims (4)

P a t e n t a n s p r ü c h e: P a t e n t a n s p r ü c h e: Vorrichtung zum S.xtrudieren und kontinuierlichen Aufbereiten, insbesondere von plastischen Massen, betehend aus einem Mehrschneckenextruder mit kämmenden und ich gleichsinnig drehenden Schnecken, dadurch gekennzeichnet, daß in den Knet- oder Plastizierzonen (; 7) an sich bekannte Wälzkörper (9) planetenartig um beide Zentralwellen (2; 3) auf sich schneidenden Führungsbahnen (8) und um die eigene Achse rotierend angeordnet sind.Device for extrusion and continuous processing, in particular of plastic masses consisting of a multi-screw extruder with intermeshing and I co-rotating screws, characterized in that in the kneading or Plasticizing zones (7) known rolling elements (9) like a planet around both central shafts (2; 3) on intersecting guideways (8) and rotating around its own axis are arranged. 2. Vorrichtung nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t, daß das Verhältinis des Zentralwellendurchmessers in den Enet- oder Plastizierzonen (6; 7) zum Durchmesser des Wälzkörpers (9) maximal 4 : 1 beträgt.2. Apparatus according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the ratio of the central shaft diameter in the Enet or plasticizing zones (6; 7) to the diameter of the rolling element (9) is a maximum of 4: 1. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Zentralwellen (2; 3) und/oder die Wälzkörper (9) in den Knet- oder Plastizierzonen (6; 7) zylindrisch, kegelig, gewölbt oder verzahnt ausgebildet sind.3. Apparatus according to claim 1 and 2, characterized in that the central shafts (2; 3) and / or the rolling elements (9) in the kneading or plasticizing zones (6; 7) are cylindrical, conical, arched or toothed. 4. Vorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Zentralwellen (2; 3), die Wälzkörper (9) und die Zylinderinnenwand (10; 11) in den Knet- oder Plastizierzonen (; 7) mit unterschiedlicher Oberflächengestalt kombiniert sind.4. Apparatus according to claim 1 to 3, characterized in that the central shafts (2; 3), the rolling elements (9) and the inner wall of the cylinder (10; 11) in the kneading or plasticizing zones (7) with different surface shapes are combined.
DE19712146095 1970-09-16 1971-09-15 Plasticising extruder - with rollers in planet paths around multiple screws Pending DE2146095A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD15013570 1970-09-16

Publications (1)

Publication Number Publication Date
DE2146095A1 true DE2146095A1 (en) 1972-03-23

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DE19712146095 Pending DE2146095A1 (en) 1970-09-16 1971-09-15 Plasticising extruder - with rollers in planet paths around multiple screws

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026471A1 (en) * 2000-09-28 2002-04-04 Berstorff Gmbh Screw extruder and gear pump arrangement for highly viscous media
DE102016012386A1 (en) * 2016-10-18 2018-04-19 Jochen Hennes A screw plasticizing machine and method of operating a screw plasticizing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026471A1 (en) * 2000-09-28 2002-04-04 Berstorff Gmbh Screw extruder and gear pump arrangement for highly viscous media
CZ298865B6 (en) * 2000-09-28 2008-02-27 Berstorff Gmbh Screw extruder and gear pump arrangement for highly viscous media
DE102016012386A1 (en) * 2016-10-18 2018-04-19 Jochen Hennes A screw plasticizing machine and method of operating a screw plasticizing machine

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