DE1153887B - Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores - Google Patents

Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores

Info

Publication number
DE1153887B
DE1153887B DES59628A DES0059628A DE1153887B DE 1153887 B DE1153887 B DE 1153887B DE S59628 A DES59628 A DE S59628A DE S0059628 A DES0059628 A DE S0059628A DE 1153887 B DE1153887 B DE 1153887B
Authority
DE
Germany
Prior art keywords
screw
zone
sleeves
mixing
kneading
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
DES59628A
Other languages
German (de)
Inventor
Gerhard Mielke
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES59628A priority Critical patent/DE1153887B/en
Publication of DE1153887B publication Critical patent/DE1153887B/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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding 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
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • 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
    • B29C48/64—Screws with two or more threads
    • B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
    • 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
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • 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
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/688—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having threads
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/834—Cooling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

Einschneckenstrangpresse zum Mischen, Kneten und Gelieren von Kunststoffmischungen und zum Umpressen oder Umspritzen von elektrischen Leitern oder Kabelseelen Die Erfindung bezieht sich auf eine Einschneckenstrangpresse, die zum Mischen, Kneten und Gelieren von Kunststoffmischungen in aufeinanderfolgenden Zonen und zum Umpressen oder Umspritzen von elektrischen Leitern oder Kabelseelen mit diesen Mischungen in einem Arbeitsgang geeignet ist. Es ist Aufgabe der Erfindung, eine derartige Einschneckenstrangpresse unter möglichst geringem Aufwand für möglichst viele Anwendungszwecke brauchbar zu machen, so daß sie in dieser Hinsicht zwar die Vorteile der bekannten Mehrschneckenpresse, nicht aber deren Nachteile besitzt.Single screw extruder for mixing, kneading and gelling of plastic mixtures and for overmolding or overmolding of electrical conductors or cable cores The invention relates to a single-screw extruder, which is used for mixing, kneading and gelling of plastic mixtures in successive zones and for overmolding or overmoulding electrical conductors or cable cores with these mixtures is suitable in one operation. It is an object of the invention to provide such Single screw extrusion press with as little effort as possible for as many applications as possible to make useful, so that in this respect they have the advantages of the known Multi-screw press, but does not have its disadvantages.

Es ist bereits eine Schneckenstrangpresse zur Herstellung von Strängen aus Gummi bekannt, bei der die Innenwelle eine Mehrzahl aufeinanderfolgender Schneckeninnenringe mit einem bestimmten Außenschneckenprofil aufnimmt und bei der innerhalb eines Teiles des Schneckenzylinders mehrere aufeinanderfolgende Schneckenaußenringe mit einem bestimmten Innenschneckenprofil angeordnet sind. It is already a screw extruder for making strands known from rubber, in which the inner shaft has a plurality of successive inner worm rings with a certain external screw profile and with the inside of a part of the screw cylinder several successive outer screw rings with one certain internal screw profile are arranged.

Sowohl die Schneckeninnenringe als auch die Schnekkenaußenringe sind mittels Längskeile gegen Verdrehung in der Umfangsrichtung gesichert. Die Schnekkeninnenringe sind dabei durch Aufschrumpfen mit der Innenwelle fest verbunden und daher praktisch nicht mehr austauschbar. Weiterhin ist es bei Schnekkenstrangpressen bekannt, den Außenmantel der Presse in mehrere Rohrabschnitte mit verschiedenem Innendurchmesser zu unterteilen. Auch ist bereits bekannt. in Schneckenstrangpressen zum Mischen von plastischen Massen besondere Entlüftungs und Entgasungszonen vorzusehen.Both the screw inner rings and the screw outer rings are secured against rotation in the circumferential direction by means of longitudinal wedges. The inner snail rings are firmly connected to the inner shaft by shrinking them on and are therefore practical no longer interchangeable. Furthermore, it is known in screw extrusions, the Outer jacket of the press in several pipe sections with different inner diameters to subdivide. Also is already known. in screw extruders for mixing special ventilation and degassing zones are to be provided for plastic masses.

Die eingangs gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schneckenraum in an sich bekannter Weise in mehrere aufeinanderfolgende Arbeitszonen, nämlich in eine Füllzone, eine Vorkomprimiemngszone, eine Mischzone. eine Knetzone, eine Entgasungszone, eine Nachkomprimierungszone und eine Gelierzone aufgeteilt ist, daß einerseits die Schnecke aus einem zylindrischen oder hohlzylindrischen Dorn mit mehreren auf ihn leicht auswechselbar aufgesteckten Hülsen (Schneckenhülsen) mit Außenprofil und andererseits der Schnekkenzylinder aus einem Hohlzylinder mit mehreren ebenfalls leicht auswechselbaren Hülsen (Außenzylinderhülsen) mit einem Innenprofil besteht und daß die Schneckenhülsen und die Außenzylinderhülsen innerhalb jeder Arbeitszone gleiche Länge und ein den Arbeitsbedingungen dieser Zone angepaßtes Profil aufweisen, wobei sowohl die Schnekkenhülsen als auch die Außenzylinderhülsen mit Festhalteelementen, z. B. flachen Längskeilen, versehen sind, die wohl ein Verschieben der Hülsen in Längsrichtung gestatten, aber eine Verdrehung der Hülsen in Umfangsrichtung verhindern. The object set out at the beginning is achieved according to the invention by that the screw space in a known manner in several successive Working zones, namely a filling zone, a pre-compression zone, a mixing zone. a kneading zone, a degassing zone, a post-compression zone and a gelling zone is divided that on the one hand the screw from a cylindrical or hollow cylindrical Mandrel with several easily exchangeable sleeves attached to it (screw sleeves) with outer profile and on the other hand the screw cylinder from a hollow cylinder with several also easily exchangeable sleeves (outer cylinder sleeves) with one There is an inner profile and that the screw sleeves and the outer cylinder sleeves are inside each work zone is the same length and is adapted to the working conditions of this zone Have profile, both the screw sleeves and the outer cylinder sleeves with retaining elements, e.g. B. flat longitudinal wedges are provided, which are likely to move allow the sleeves in the longitudinal direction, but a rotation of the sleeves in the circumferential direction impede.

In der Zeichnung ist eine Einschneckenstrangpresse gemäß der Erfindung als Ausführungsbeispiel dargestellt. In the drawing is a single screw extruder according to the invention shown as an exemplary embodiment.

Fig. 1 zeigt die Schnecke im Längsschnitt, während Fig. 2, 3 und 4 Querschnitte an den Schnittstellen A-A, B-B und C-C zeigen. Fig. 1 shows the screw in longitudinal section, while Figs. 2, 3 and 4 show cross-sections at intersections A-A, B-B and C-C.

Bei der dargestellten Einschneckenstrangpresse sind in den aufeinanderfolgenden Arbeitszonen a bis g auf den hohlzylindrischen Dorn 10 verschiedenartige Hülsen (Schneckenhülsen) mit einem dem jeweiligen Arbeitsgang angepaßten Außenprofil aufgeschoben. In the illustrated single-screw extruder, in the successive Working zones a to g on the hollow cylindrical mandrel 10 different types of sleeves (Screw sleeves) pushed on with an outer profile adapted to the respective operation.

Andererseits sind in den Außenzylinder 20 in entsprechender Aufeinanderfolge Hülsen (Außenzylinderhülsen) eingesetzt, die in den aufeinanderfolgenden Zonen ein dem Außenprofil der jeweils zugehörigen Schneckenhülse angepaßtes Innenprofil aufweisen.On the other hand, in the outer cylinder 20 are in corresponding succession Sleeves (outer cylinder sleeves) used in the successive zones have the outer profile of the respective associated screw sleeve adapted inner profile.

In der ersten Arbeitszone, der Füllzone a, in der sich auch der Fülltrichter 30 befindet, hat die auf den Dorn 10 aufgeschobene Hülse 11 einen hohen Schneckensteg 11', um eine möglichst große Menge der in den Trichter eingefüllten Kunststoffmischung in der Arbeitsrichtung zu fördern. Die Außenzylinderhülse 21 ist als glatter Zylinder ausgeführt. In der anschließenden ersten Kompressionszone b hat die Hülse 12 ein schwach konisches Außenprofil, so daß dementsprechend die Höhe des Schneckensteges 12' in der Arbeitsrichtung abnimmt, so daß eine allmähliche Komprimierung der Kunststoffmischung eintritt. Die Außenzylinderhülse 22 ist wieder als glatte Zylinderhülse ausgebildet. In der darauffolgenden Mischzone c hat die Hülse 13 einen abgerundeten Schneckensteg 13', ebenso hat die Außenzylinderhülse 23 einen abgerundeten Schneckensteg23', der aber gegenläufig zum Schneckensteg 13' der Innenhülse gerichtet ist, um- eine gute Mischwirkung zu erreichen. Anschließend folgt die Knetzone d, die durch auf den Dorn 10 aufgesteckte exzentrische Knetscheiben 14 und durch in den Hohlzylinder 20 eingesetzte exzentrische Knetscheiben 24 gebildet ist. In the first work zone, the filling zone a, in which the filling funnel is also located 30 is located, the sleeve 11 pushed onto the mandrel 10 has a high screw flight 11 'to the largest possible amount of the plastic mixture filled into the funnel to promote in the direction of work. The outer cylinder sleeve 21 is a smooth cylinder executed. In the subsequent first compression zone b, the sleeve 12 has a weakly conical outer profile, so that accordingly the amount of the Screw flight 12 'decreases in the working direction, so that a gradual compression the plastic mixture occurs. The outer cylinder sleeve 22 is again as smooth Cylinder sleeve formed. In the subsequent mixing zone c, the sleeve 13 has a rounded screw web 13 ', likewise the outer cylinder sleeve 23 has a rounded one Schneckensteg23 ', but directed in the opposite direction to the screw flight 13' of the inner sleeve is to achieve a good mixing effect. This is followed by kneading zone d, through the eccentric kneading disks 14 attached to the mandrel 10 and through in the hollow cylinder 20 inserted eccentric kneading disks 24 is formed.

In der dann folgenden Entgasungszone e hat die Innenhülse 15 einen hohen Schneckensteg 15', so daß eine tiefgeschnittene Schnecke mit guter Förderleistung entsteht. Die glatt ausgeführte Außenzylinderhülse 25 hat einen Evakuierungskanal 25', um diese Zone über das an den Evakuierungskanal 25' angeschlossene Rohr 25" evakuieren zu können. Es folgt nun die zweite Kompressionszone f, die in Übereinstimmung mit der ersten Kompressionszone b einen schwach konisch gestalteten Innenzylinder 16 mit Schneckensteg 16' und einen glatten Außenzylinder 26 enthält. In der anschließenden Gelierzone g hat der Innenzylinder 17 einen flachen Schneckensteg 17', so daß ein flacher Schneckengang entsteht. Der Außenzylinder 27 ist ein glatter Hohlzylinder.In the then following degassing zone e, the inner sleeve 15 has a high screw flight 15 ', so that a deep-cut screw with good conveying capacity arises. The smooth outer cylinder sleeve 25 has an evacuation channel 25 'to reach this zone via the pipe 25 "connected to the evacuation channel 25' to be able to evacuate. It now follows the second compression zone f, which is in accordance with the first compression zone b a slightly conical inner cylinder 16 with screw flight 16 'and a smooth outer cylinder 26 contains. In the subsequent Gelling zone g, the inner cylinder 17 has a flat screw flight 17 ', so that a shallow worm gear arises. The outer cylinder 27 is a smooth hollow cylinder.

Als Führungselement für die auf den Dorn 10 aufgesteckten Schneckenhülsen 11, 12, 13, 15, 16, 17 und Knethülsen 14 dient der in eine Nut des Dornes fest eingesetzte flache Längskeil 10', während die in den Außenzylinder 20 eingesetzten Schneckenhülsen 21, 22, 23, 25, 26, 27 und Knethülsen 24 durch den Flachkeil 20' in Längsrichtung geführt und gegen Drehen gesichert werden. Die Hülsen sind - wie ersichtlich - mit den Flachkeilen angepaßten Längsnuten versehen. As a guide element for the screw sleeves attached to the mandrel 10 11, 12, 13, 15, 16, 17 and kneading sleeves 14 are used for the firmly inserted into a groove of the mandrel flat longitudinal wedge 10 ', while the screw sleeves inserted into the outer cylinder 20 21, 22, 23, 25, 26, 27 and kneading sleeves 24 through the flat wedge 20 'in the longitudinal direction guided and secured against turning. The sleeves are - as can be seen - with provide longitudinal grooves adapted to the flat wedges.

Die Schnecke schließt in bekannter Weise mit dem sogenannten Torpedokopf ab, der im wesentlichen aus dem an den Schneckendorn 10 angesetzten kegeligen Dorn 18 und der Kegelhülse 28 besteht. In den kegeligen Dorn 18 ist ein Thermoelement 31 eingesetzt, um die Temperatur des Materials im Spritzkopf zu messen bzw. zu überwachen und daraufhin, gegebenenfalls automatisch, die gewünschte Temperatur einzustellen. Alle Außenzylinderhülsen 21 bis 28 werden mittels der in den Außenzylinder 20 einschraubbaren Zylinderschraube 32 zusammengehalten. Die gesamte Schneckenanordnung ist in bekannter Weise mit dem schematisch angedeuteten Spritzkopf 33 verbunden. The screw closes in a known manner with the so-called torpedo head from which essentially consists of the conical mandrel attached to the screw mandrel 10 18 and the conical sleeve 28 consists. In the conical mandrel 18 is a thermocouple 31 is used to measure or monitor the temperature of the material in the spray head and then, if necessary automatically, to set the desired temperature. All outer cylinder sleeves 21 to 28 are screwed into the outer cylinder 20 by means of the Cylinder screw 32 held together. The entire screw arrangement is known Manner with the schematically indicated spray head 33 connected.

Mit Hilfe einer derartig ausgebildeten Einschnekkenstrangpresse läßt sich eine gute Knet- und Mischwirkung erzielen. Durch die Auswechselbarkeit der Innen- und Außenhülsen kann für jede Kunststoffmischung eine große Leistungsfähigkeit erreicht werden. In vorteilhafter Weise ist die Reihenfolge der Hülsen veränderbar. Bei Verschleißungserscheinungen brauchen nur Einzelteile ausgetauscht zu werden. With the help of such a trained single-screw extruder can achieve a good kneading and mixing effect. The interchangeability of the Inner and outer sleeves can be of great performance for any plastic mix can be achieved. The order of the sleeves can advantageously be changed. If there are signs of wear, only individual parts need to be replaced.

Mit besonderem Vorteil ist die Einschneckenstrangpresse zur Verarbeitung von Trockenmischungen verwendbar.The single-screw extruder is particularly advantageous for processing usable by dry mixes.

Abweichend von dem dargestellten Ausführungsbeispiel kann die Anzahl der Arbeitszonen und die Reihenfolge der Arbeitszonen und ferner auch die Formgebung der Innen- und Außenhülsen geändert werden. Deviating from the illustrated embodiment, the number the work zones and the order of the work zones and also the shape the inner and outer sleeves can be changed.

Claims (5)

PATENTANSPRÜCHE: 1. Einschneckenstrangpresse zum Mischen, Kneten und Gelieren von Kunststoffmischungen in aufeinanderfolgenden Zonen und zum Umpressen oder Umspritzen von elektrischen Leitern oder Kabelseelen mit diesen Mischungen in einem Arbeitsgang, dadurch gekennzeichnet, daß der Schneckenraum in an sich bekannter Weise in mehrere aufeinanderfolgende Arbeitszonen, nämlich in eine Füllzone (a), eine Vorkomprimierungszone (b), eine Mischzone (c), eine Knetzone (d), eine Entgasungszone (e), eine Nachkomprimierungszone (f) und eine Gelierzone (g) aufgeteilt ist, daß einerseits die Schnecke aus einem zylindrischen oder hohlzylindrischen Dorn mit mehreren auf ihn leicht auswechselbar aufgesteckten Hülsen (Schneckenhülsen 11 bis 17) mit Außenprofil und andererseits der Schneckenzylinder aus einem Hohlzylinder mit mehreren ebenfalls leicht auswechselbaren Hülsen (Außenzylinderhülsen21 bis 27) mit einem Innenprofil besteht und daß die Schneckenhülsen und die Außenzylinderhülsen innerhalb jeder Arbeitszone gleiche Länge und ein den Arbeitsbedingungen dieser Zone angepaßtes Profil aufweisen, wobei sowohl die Schneckenhülsen (11 bis 17) als auch die Außenzylinderhülsen (21 bis 27) mit Festhalteelementen, z. B. flachen Längskeilen 10' und 20', versehen sind, die wohl ein Verschieben der Hülsen in Längsrichtung gestatten, aber eine Verdrehung der Hülsen in Umfangsrichtung verhindern. PATENT CLAIMS: 1. Single-screw extruder for mixing, kneading and gelling of plastic mixtures in successive zones and for overmolding or overmoulding electrical conductors or cable cores with these mixtures in one operation, characterized in that the screw space is known per se Way into several successive work zones, namely in a filling zone (a), a pre-compression zone (b), a mixing zone (c), a kneading zone (d), a degassing zone (e), a post-compression zone (f) and a gelling zone (g) are divided in that on the one hand the screw made of a cylindrical or hollow cylindrical mandrel several easily interchangeable sleeves attached to it (worm sleeves 11 to 17) with an outer profile and, on the other hand, the screw cylinder from a hollow cylinder with several easily exchangeable sleeves (outer cylinder sleeves21 to 27) with an inner profile and that the screw sleeves and the outer cylinder sleeves the same length within each working zone and in accordance with the working conditions of these Zone have adapted profile, both the screw sleeves (11 to 17) as also the outer cylinder sleeves (21 to 27) with retaining elements, for. B. flat longitudinal wedges 10 'and 20', which are probably a displacement of the sleeves in the longitudinal direction allow, but prevent rotation of the sleeves in the circumferential direction. 2. Einschneckenstrangpresse nach Anspruch 1, dadurch gekennzeichnet, daß die Schneckenhülsen (11, 15) in der Füllzone (a) und in der Entgasungszone (e) besonders tief geschnittene Schneckengänge aufweisen. 2. Single screw extruder according to claim 1, characterized in that that the screw sleeves (11, 15) in the filling zone (a) and in the degassing zone (e) have particularly deep worm threads. 3. Einschneckenstrangpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Vorkomprimierungszone (b) und die Nachkomprimierungszone (1) mit kegeligen Schneckenhülsen (12, 16) ausgerüstet sind. 3. Single screw extruder according to claim 1 or 2, characterized in that that the pre-compression zone (b) and the post-compression zone (1) with conical Screw sleeves (12, 16) are equipped. 4. Einschneckenstrangpresse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Mischzone (c) eine innere Schneckenhülse (13) mit abgerundetem Schneckensteg (13') und eine Außenzylinderhülse (23) mit einem ebenfalls abgerundeten, aber gegenläufig gerichteten Schneckensteg (23') aufweist. 4. Single screw extruder according to one of claims 1 to 3, characterized characterized in that the mixing zone (c) has an inner screw sleeve (13) with a rounded Screw flight (13 ') and an outer cylinder sleeve (23) with a likewise rounded, but has counter-rotating screw flight (23 '). 5. Einschneckenstrangpresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die in der Gelierzone (g) befindliche Schneckenhülse (17) mit besonders flach geschnittenen Schneckengängen versehen ist. 5. Single screw extruder according to one of claims 1 to 4, characterized characterized in that the screw sleeve (17) located in the gelation zone (g) with is provided with particularly flat-cut worm threads. In Betracht gezogene Druckschriften: Französische Zusatzpatentschrift Nr. 67 346 (Zusatz zum französischen Patent Nr. 1 113 499); USA.-Patentschriften Nr. 2 200 997, 2 733 051. Documents considered: French patent specification No. 67,346 (addendum to French patent No. 1,113,499); U.S. Patents No. 2 200 997, 2 733 051.
DES59628A 1958-08-29 1958-08-29 Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores Pending DE1153887B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES59628A DE1153887B (en) 1958-08-29 1958-08-29 Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES59628A DE1153887B (en) 1958-08-29 1958-08-29 Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores

Publications (1)

Publication Number Publication Date
DE1153887B true DE1153887B (en) 1963-09-05

Family

ID=601087

Family Applications (1)

Application Number Title Priority Date Filing Date
DES59628A Pending DE1153887B (en) 1958-08-29 1958-08-29 Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores

Country Status (1)

Country Link
DE (1) DE1153887B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447582A (en) * 1967-08-01 1969-06-03 Egan & Co Frank W Apparatus for treating polymers and the like
EP2342061A2 (en) * 2008-09-23 2011-07-13 Adm-Isobloc GmbH Method and device for degassing a mixture comprising polymeric binders in particular

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200997A (en) * 1937-01-29 1940-05-14 Vernon E Royle Extruding machine
US2733051A (en) * 1954-09-30 1956-01-31 R street
FR67346E (en) * 1954-12-29 1958-02-20 Improvements to plodders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200997A (en) * 1937-01-29 1940-05-14 Vernon E Royle Extruding machine
US2733051A (en) * 1954-09-30 1956-01-31 R street
FR67346E (en) * 1954-12-29 1958-02-20 Improvements to plodders

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447582A (en) * 1967-08-01 1969-06-03 Egan & Co Frank W Apparatus for treating polymers and the like
EP2342061A2 (en) * 2008-09-23 2011-07-13 Adm-Isobloc GmbH Method and device for degassing a mixture comprising polymeric binders in particular
EP2342061B1 (en) * 2008-09-23 2016-11-09 Adm-Isobloc GmbH Method and device for degassing a mixture comprising polymeric binders in particular

Similar Documents

Publication Publication Date Title
DE2719095C2 (en) Screw press for processing plastic masses, in particular plastics and rubber
DE68902084T2 (en) MIXING DEVICE WITH DISTRIBUTION MIXING EFFECT FOR A SCREW PRESS, AN INJECTION MOLDING MACHINE AND THE LIKE.
DE2158246A1 (en) DEVICE FOR PROCESSING AND EXTRUSION OF PLASTICS
DE1101745B (en) Milling and kneading device on screw presses for thermoplastic masses
DE1945675B2 (en) PROCESS AND DEVICE FOR MANUFACTURING HOSES FROM RUBBER OR OTHER PLASTICIZABLE COMPOSITIONS WITH STRONG REINFORCING INSERTS IN THE HOSE LENGTH DIRECTION
DE3003615C2 (en) Screw extruder with pin cylinder
DE2608307B2 (en) Multi-flight extruder screw
DE2450030C3 (en) Single screw extrusion press for thermoplastics
DE2514307A1 (en) SCREW HOUSING FOR AN EXTRUDER OR INJECTION MOLDING MACHINE
DE909151C (en) Screw press
DE60030039T2 (en) Compact extruder with several parallel screws
DE19720916B4 (en) Planetary roller extruder with stop ring
DE1153887B (en) Single-screw extrusion press for mixing, kneading and gelling of plastic mixtures and for pressing or overmoulding electrical conductors or cable cores
DE2454785A1 (en) Double screw extruder - with central bored device to blend two streams together thoroughly
DE1145787B (en) Screw extruder with a damming section, the cross section of which is variable
DE1092186B (en) Screw press with two concentrically nested press rooms for the production of hollow profiles from thermoplastic material
DE2357945C3 (en) Screw extruder for the continuous processing of plastic masses
DE2051885A1 (en) Duplex worn screw extruder - allowing transverse adjustment of screw of screw journals and walls for careful plasticising of different mat
EP0052797B1 (en) Process and apparatus for the continuous manufacture of propellant powder
DE739278C (en) Device for homogenizing and pressing out plastic to crumbly soft masses, emulsions and the like. like
DE1961078A1 (en) Hollow plastics tubing prodn
DE1146648B (en) Process for the production of multicolored plastic semi-finished products on screw extrusion
EP0419983A1 (en) Extrusion head for multi-layered extrudates
DE1816915U (en) SINGLE SCREW PRESS FOR MIXING, KNEDING AND, IF NECESSARY, GELLING OF PLASTIC MIXTURES AND FOR COMPRESSING OR COMPRESSING. MOLDING OF ELECTRIC LADDERS OR CABLE SOULS.
DE831563C (en) Extrusion machine for plastic masses, especially for wrapping electrical conductors