DE3042427C2 - Twin screw extruder for processing thermoplastic molding compounds, in particular plastics - Google Patents
Twin screw extruder for processing thermoplastic molding compounds, in particular plasticsInfo
- Publication number
- DE3042427C2 DE3042427C2 DE3042427A DE3042427A DE3042427C2 DE 3042427 C2 DE3042427 C2 DE 3042427C2 DE 3042427 A DE3042427 A DE 3042427A DE 3042427 A DE3042427 A DE 3042427A DE 3042427 C2 DE3042427 C2 DE 3042427C2
- Authority
- DE
- Germany
- Prior art keywords
- screw
- throttle
- pins
- throttle pins
- screw extruder
- 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
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
- B29C48/36—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
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
-
- 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
- B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
-
- 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
-
- 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
- B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Die Erfindung betrifft eine Doppelschneckenstrangpresse gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a twin screw extruder according to the preamble of claim 1.
Es ist eine derartige Doppelschneckenstrangpresse bekannt (DE-PS 8 79 913), die zwei sich gleichsinnig drehende Förderschnecken aufweist, die mit ihren Gängen ineinander greifen. Die beiden Schnecken haben jeweils eine Schneckenstegunterbrechung, die in einer gemeinsamen Ebene angeordnet sind. In den so gebildeten schneckenstegfreien Abschnitten ragen senkrecht zu den Schneckenachsen verschiebbare Drosselstifte hinein. Diese Drosselstifte sind im Schneckengehäuse derart angebracht, daß ihre verlängerten Achslinien senkrecht auf den SchneckenachsenSuch a twin screw extruder is known (DE-PS 8 79 913), the two are in the same direction has rotating screw conveyors, which mesh with their gears. The two snails each have a screw flight interruption, which are arranged in a common plane. In the so The screw flight-free sections formed protrude perpendicular to the screw axes and are displaceable Throttle pins in. These throttle pins are mounted in the worm housing so that their elongated Axis lines perpendicular to the screw axes
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65 stehen. Die Drosselslifte lassen sich in ihrer Eindringtiefe in die stegfreien Abschnitte radial zu den Schnecken verstellen, um eine unterschiedliche Drosselung des Massestroms bei seiner Förderung zu ermöglichen. Die aus diesem Stand der Technik bekannte Anordnung der Drosselstifte am Gehäuseumfang hat den Nachteil, daß der Durchflußquerschnitt der Doppelschneckenstrangpresse von den Drosselstiften nicht vollständig abgedeckt werden kann. Eine feine Durchflußregelung im Bereich geringen Massedurchflusses kann mit dieser vorgeschlagenen Drosselvorrichtung an einer Doppelschneckenstrangpresse nicht erzielt werden. 65 stand. The depth of penetration of the throttle lifts into the web-free sections can be adjusted radially in relation to the screws in order to enable different throttling of the mass flow when it is being conveyed. The arrangement of the throttle pins on the circumference of the housing known from this prior art has the disadvantage that the flow cross-section of the twin-screw extruder cannot be completely covered by the throttle pins. A fine flow control in the area of low mass flow cannot be achieved with this proposed throttle device on a twin screw extruder.
Der Erfindung liegt die Aufgabe zugrunde, eine Doppelschneckenstrangpresse gemäß der im Oberbegriff des Patentanspruchs 1 geschilderten Gattung zu schaffen, bei der der Durchflußquerschnitt von den Drosselstiften nahezu vollständig abgedeckt werden kann.The invention is based on the object of a twin screw extruder according to the preamble of claim 1 described type to create, in which the flow cross-section of the Throttle pins can be covered almost completely.
Die Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruchs I genannten Merkmale gelöst.The object is achieved according to the invention by the features mentioned in the characterizing part of patent claim I. solved.
Durch die erfindungsgemäße Ausbildung der Doppelschneckeiistrangpresse können in der Ebene der Schneckenstegunterbrechungen eine größere Anzahl von Drosselstiften am Umfang des Gehäuses angeordnet werden. Darüber hinaus decken die Drusselstifte im Zwickelbereich und die weiteren, schräg angestellten Drosseistifte einen größeren Teil des Durchflußquerschnittes ab, als es die die Schneckenachse mit ihren Achsen schneidenden Drosselstifte vermögen. Weiter wird es durch die erfindungsgemäße Anordnung der Drosselstifte leichter, die axiale Verstellmöglichkeit der Drosseistifte zu realisieren. Die jeweilige Verstellvorrichtung eines Drosselstiftes hat ausreichend Platz auf dem Gehäuseaußenumfang.Due to the inventive design of the twin screw extruder a larger number of throttle pins can be arranged on the circumference of the housing in the plane of the screw flight interruptions will. In addition, the glandular pins cover the crotch area and the other, inclined ones Throttle pins from a larger part of the flow cross-section than the screw axis with its Axis cutting throttle pins are capable of. It is further made possible by the arrangement according to the invention Throttle pins easier to realize the axial adjustment of the throttle pins. The respective adjustment device of a throttle pin has sufficient space on the outer circumference of the housing.
In vorteilhafter Ausgestaltung der Erfindung sind die Drosselstiftenden entsprechend der kreisförmigen Schneckenstegunterbrechungen konkav ausgebildet. Dadurch wird ein gleichmäßiger Spalt zwischen dem Ende des Drosselstiftes und dem steglosen Abschnitt der jeweiligen Schnecke erzielt. Die Abdeckung des Durchflußquerschnittes ist gleichmäßiger.In an advantageous embodiment of the invention, the throttle pin ends are circular The screw flight interruptions are concave. This creates an even gap between the The end of the throttle pin and the seamless section of the respective screw achieved. The cover of the The flow area is more uniform.
In weiterer vorteilhafter Ausgestaltung der Erfindung weist jeder Drosselstift am der Schnecke abgewandten Ende eine Verdrehsicherung auf und ist mit einem Kupplungsansatz formschlüssig mit einer Verstellschraube verbunden, die in einer stationären Innengewindehülse angeordnet ist. Die Verstellung der Drosseistifte kann dadurch einfach und genau vorgenommen werden.In a further advantageous embodiment of the invention each throttle pin has an anti-twist device at the end facing away from the worm and is provided with a Coupling attachment positively connected with an adjusting screw, which is in a stationary internally threaded sleeve is arranged. The adjustment of the throttle pins can be carried out easily and precisely will.
Durch die Erfindung wird es möglich, den Durchflußquerschnitt der Doppelschneckenstrangpresse durch die Drosselstifte gleichmäßig und nahezu vollständig abzudecken. Im gedrosselten Zustand der Doppelschneckenstrangpresse kann der Massedurchfluß fein geregelt werden.The invention makes it possible to reduce the flow cross section of the twin screw extruder to cover the throttle pins evenly and almost completely. In the throttled state of the twin screw extruder the mass flow can be finely regulated.
Anhand der Zeichnung wird nachstehend ein Ausführungsbeispiel der Erfindung näher erläutert. Dabei wurden der besseren Übersicht halber an sich bekannte, nicht zum Verständnis der Erfindung beitragende Vorrichtungen und Maschinenbereiche fortgelassen. Es zeigtAn exemplary embodiment of the invention is explained in more detail below with reference to the drawing. Here, for the sake of clarity, known per se, not for understanding the invention contributing devices and machine areas omitted. It shows
Fig. 1 einen Querschnitt durch eine Doppelschnekkenstrangpresse in der Ebene der Drosselstifte nach Schnittlinie I-I in Fig.3,1 shows a cross section through a twin screw extruder in the plane of the throttle pins according to section line I-I in Fig. 3,
Fig. 2 eine geschnittene Draufsicht der Doppelschneckenstrangpresse nach Schnittlinie If-II in Fig. 1, Fig. 3 eine Seitenansicht eines Teilbereiches derFig. 2 is a sectional plan view of the twin screw extruder according to section line If-II in Fig. 1, Fig. 3 is a side view of a portion of the
Doppelschneckenstrangpresse, mit nach Schnittlinie ■ 1I-III in F i g. 1 aufgebrochenem Bereich.Twin screw extruder, with according to section line ■ 1I-III in F i g. 1 broken area.
Die Doppelschneckenstrangpresse weist iwei parallel nebeneinander liegende, angetriebene Schnecken 4 und 5 auf, auf die die Schneckengewindestücke 6 aufgeschoben werden. Die drehfeste Verbindung wird durch eine in der jeweiligen Schnecke 4 bzw. 5 angeordnete Paßfeder 7 bzw. 8 erreicht. Ein schneckenstegfreier Abschnitt auf den Doppelschnecken wird durch das Aufstecken mit einer Innennut versehener Ringe 14 und 15 erzielt.The twin screw extruder has two parallel Driven screws 4 and 5 lying next to one another, onto which the screw thread pieces 6 be postponed. The non-rotatable connection is made by a screw in the respective screw 4 or 5 arranged feather key 7 or 8 reached. A snail-free one The section on the twin screws is provided with an internal groove by attaching it Rings 14 and 15 scored.
Das Gehäuse der Doppelschneckenstrangpresse weist zwei Schnecke;izylinder 16 und 17 auf, die an ihren Enden mit Spannflanschen 18 und 19 ausgerüstet sind. Zwischen den beiden Schneckenzylindern 16 und 17 ist ein Gehäusering 21 zur Aufnahme einer aus senkrecht zu den Schnecken 4, 6 und 5, 6 angebrachten Drosselstiften bestehenden Drosselvorrichtung angeordnet Die Spannflanschen 18 und 19 der gegenüberliegenden Enden der beiden Schneckenzylinder 16 und 17 sind miuels geeigneter Maschinenschrauben 22 gegeneinander verspannt.The housing of the twin screw extruder has two screws; izylinders 16 and 17, which are attached to their Ends with clamping flanges 18 and 19 are equipped. Between the two screw cylinders 16 and 17 is a housing ring 21 for receiving one attached perpendicular to the screws 4, 6 and 5, 6 Throttle pins arranged existing throttle device The clamping flanges 18 and 19 of the opposite Ends of the two screw cylinders 16 and 17 are secured by means of suitable machine screws 22 braced against each other.
Die Schneckenzylinder 16 und 17 und der Gehäusering 21 weisen zwei parallele Längsbohrungen 23 und 24 auf, die sich etwas überschneiden, so daß eine Brillenbohrung mit zwei Zwickelbereichen 25 und 26 gebildet wird. In dieser Brillenbohrung 23, 24 sind die beiden Schnecken 4, 6 und 5, 6 miteinander kämmend angeordnet.The screw cylinders 16 and 17 and the housing ring 21 have two parallel longitudinal bores 23 and 24 on, which overlap somewhat, so that a glasses hole with two gusset areas 25 and 26 is formed. In this spectacle bore 23, 24 the two screws 4, 6 and 5, 6 mesh with one another arranged.
Über den Umfang der Brillenbohrung 23, 24 sind die Drosselstifte versetzt zueinander angeordnet. In den Zwickelbereichen 25 und 26 sind zwei Drosselstifte 29 und 28 einander gegenüberliegend angeordnet. Zwei weitere Drosselstifte 31 und 32 sind in der gemeinsamen Ebene 33 der beiden Schneckenachsen einander gegenüberliegend angeordnet. Zwischen den Drosselstiften 29 und 28 der Zwickelbereiche 25 und 26 und den in der gemeinsamen Ebene 33 der beiden Schneckenachsen liegenden Drosselstifte 31 und 32 sind jeweils zwei weitere Drosselstifte 34, 35; 36, 37; 38, 39; 40, 41 angeordnet. Diese beiden Drosselstifte sind schräg zur gemeinsamen Ebene 33 der Schneckenachsen angestellt und schneiden sich mit ihren verlängerten Achslinien in einem Punkt 43 bzw. 44 in der gemeinsamen Ebene 33 der Schneckenachsen seitlich neben der jeweiligen Schneckenachse. Die beiden Drosselstifte 34,35; 36,37; 38, 39; 40, 41 sind unter verschiedenen Winkeln angebracht. Der dem jeweiligen, in der gemeinsamen Ebene 33 der Schneckenachse liegenden Drosselstift 31 bzw. 32 benachbarte schräggestellte Drosselstift 34,36, 38,40 ist zur gemeinsamen Ebene 33 flacher angeordnet als der dem Drosselstift 28 bzw. 29 des Zwickelbereichs 25 bzw. 26 benachbarte schräge Drosselstift 35, 37, 39, 41.The throttle pins are arranged offset to one another over the circumference of the spectacle bore 23, 24. In the gusset areas 25 and 26, two throttle pins 29 and 28 are arranged opposite one another. Two further throttle pins 31 and 32 are arranged opposite one another in the common plane 33 of the two screw axes. Between the restrictor pins 29 and 28 de r gusset portions 25 and 26 and the throttle pins lying in the common plane 33 of the two screw shafts 31 and 32 are two further throttle pins 34, 35; 36, 37; 38, 39; 40, 41 arranged. These two throttle pins are inclined to the common plane 33 of the screw axes and intersect with their extended axis lines at a point 43 or 44 in the common plane 33 of the screw axes laterally next to the respective screw axis. The two throttle pins 34,35; 36.37; 38, 39; 40, 41 are attached at different angles. The inclined throttle pin 34, 36, 38, 40 adjacent to the respective throttle pin 31 or 32 lying in the common plane 33 of the screw axis is arranged flatter to the common plane 33 than the inclined adjacent to the throttle pin 28 or 29 of the gusset area 25 or 26 Throttle pin 35, 37, 39, 41.
Die Drosselstifte 28, 29, 31, 32, 34 bis 41 haben einen runden Querschnitt und sind axial in entsprechender. Bohrungen im Gehäusering 21 verschiebbar. Jeder Drosselstift weist an seinem oberen Ende einen abgedrehten Absatz 45 auf, der über eine Nut-Feder-Verbindung 46 axial verschiebbar gegen eine Verdrehung gesichert ist. Der Absatz 45 ist über einen Kupplungsansatz 47 mit einer Verstellschraube 48 drehbeweglich verbunden. Die Verstellschraube 48 weist einen Schlüsselsechskant 49 auf und ist in eine Innengewindehülse 50 geschraubt. Die Innengewindehülse 50 ist über Schrauben 51 unter Einschluß eines mit einer Längsnut versehenen Führungsringes 52 in einer runden Ausnehmung 53 auf dein Außenumfang des Gehäuseringes 21 befestigt.The throttle pins 28, 29, 31, 32, 34 to 41 have a round cross section and are axially corresponding. Bores in the housing ring 21 can be displaced. Each throttle pin has one at its upper end turned off shoulder 45, which is axially displaceable against rotation via a tongue and groove connection 46 is secured. The shoulder 45 is connected to an adjusting screw 48 via a coupling shoulder 47 rotatably connected. The adjusting screw 48 has a hexagon wrench 49 and is in a Internally threaded sleeve 50 screwed. The internally threaded sleeve 50 is via screws 51 including one with a longitudinal groove provided guide ring 52 in a round recess 53 on your outer circumference of the Housing ring 21 attached.
Die in der Brillenbohrung liegenden, in den stegfreien Abschnitt 9 der Schnecken ragenden Enden der Drosselstifte 31, 32, 34 bis 41 weisen eine konkave Ausbildung auf, um sich an die Kreisform der gewindelosen Ringe 14, 15 der Schnecken 4, 6 und 5, 6 anzupassen. Die Drosselstifte 28, 29 der Zwickelbereiche 25, 26 liegen zwischen den beiden Schnecken 4, 6 und 5,6 und weisen daher in symmetrischer Ausbildung auf beiden Seiten konkav ausgebildete Endflächen auf.The ends of the Throttle pins 31, 32, 34 to 41 are concave in order to conform to the circular shape of the threadless rings 14, 15 of the worms 4, 6 and 5, 6 to adapt. The throttle pins 28, 29 of the gusset areas 25, 26 lie between the two screws 4, 6 and 5, 6 and therefore have a symmetrical design on both sides concave end surfaces.
Der Gehäusering 21 weist an seinen beiden Rändern je vier Nabenansätze 54 bzw. 55 auf. Je zwei Nabenansätze 54, 55 sind einander gegenüberliegend angeordnet, so daß die in den Naben angebrachten Bohrungen miteinander fluchten. In den Spannflanschen 18 und 19 sind Bohrungshülsen 56, 57 eingesetzt, deren Paßbohrungen mit den Nabenbohrungen fluchten. Durch jede Bohrungsflucht ist ein zylindrischer Zentrierstift 58 geführt.The housing ring 21 has four hub extensions 54 and 55 on each of its two edges. Two each Hub extensions 54, 55 are arranged opposite one another, so that the mounted in the hubs Align the bores with each other. In the clamping flanges 18 and 19 bore sleeves 56, 57 are used, their The fitting bores are aligned with the hub bores. There is a cylindrical one through each alignment of the bores Centering pin 58 out.
Die Verstellung der Drosselvorrichtung wird durch Drehen der Verslellschraube 48 über ihren Schlüsselsechskant 49 bewirkt. Aufgrund der Schraubbewegung wird der Kupplungsansatz 47 und damit der jeweilige Drosselstift axial verschoben. Je nach der Drehrichtung der Verstellschraube 48 wird der jeweilige Drosselstift weiter gegen die Doppelschnecken oder von diesen fortbewegt. Eine größere Eintauchtiefe der Drosselstifte ergibt eine höhere Drosselwirkung des Massedurchflusses. The adjustment of the throttle device is made by turning the verslell screw 48 via its hexagon key 49 causes. Due to the screwing movement, the coupling shoulder 47 and thus the respective Throttle pin shifted axially. Depending on the direction of rotation of the adjusting screw 48, the respective throttle pin further against the twin screws or moved away by them. A greater immersion depth of the throttle pins results in a higher throttling effect of the mass flow.
Hierzu 3 Blatt ZeichnungenFor this purpose 3 sheets of drawings
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3042427A DE3042427C2 (en) | 1980-11-11 | 1980-11-11 | Twin screw extruder for processing thermoplastic molding compounds, in particular plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3042427A DE3042427C2 (en) | 1980-11-11 | 1980-11-11 | Twin screw extruder for processing thermoplastic molding compounds, in particular plastics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3042427A1 DE3042427A1 (en) | 1982-05-19 |
| DE3042427C2 true DE3042427C2 (en) | 1983-04-07 |
Family
ID=6116444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3042427A Expired DE3042427C2 (en) | 1980-11-11 | 1980-11-11 | Twin screw extruder for processing thermoplastic molding compounds, in particular plastics |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3042427C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4010540C1 (en) * | 1990-04-02 | 1991-11-07 | Wilfried Dipl.-Ing. 3017 Pattensen De Baumgarten |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68912642T2 (en) * | 1988-05-17 | 1994-06-23 | Japan Steel Works Ltd | Extruder with device for adjusting the degree of kneading. |
| DE4021752A1 (en) * | 1990-07-07 | 1992-01-16 | Berstorff Gmbh Masch Hermann | TWIN-SCREW EXTRUDERS |
| GB2255039A (en) * | 1991-04-19 | 1992-10-28 | Frenkel Ag C D | Cold feed rubber extruder construction. |
| DE4118091A1 (en) * | 1991-06-03 | 1992-12-10 | Theysohn Friedrich Fa | DEVICE FOR PLASTICIZING PLASTIC |
| DE4130314C1 (en) * | 1991-09-12 | 1992-10-15 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De | |
| DE19931342A1 (en) * | 1999-07-07 | 2001-01-11 | Krupp Werner & Pfleiderer Gmbh | Twin-shaft extruder for plasticizing polymers, has two rotating shafts carrying processing components and throttle device at right angles to them which can rotate about vertical axis to alter cross-section of throttle space between them |
| FR3059588A1 (en) * | 2016-12-07 | 2018-06-08 | Compagnie Generale Des Etablissements Michelin | EXTRUDER WITH MOBILE FINGERS |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE879913C (en) * | 1944-02-22 | 1953-06-18 | Bayer Ag | Kneading device with multi-pitch screws |
-
1980
- 1980-11-11 DE DE3042427A patent/DE3042427C2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4010540C1 (en) * | 1990-04-02 | 1991-11-07 | Wilfried Dipl.-Ing. 3017 Pattensen De Baumgarten |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3042427A1 (en) | 1982-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |