WO1996006721A1 - Extruder with a worm drive device - Google Patents

Extruder with a worm drive device Download PDF

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Publication number
WO1996006721A1
WO1996006721A1 PCT/CH1995/000182 CH9500182W WO9606721A1 WO 1996006721 A1 WO1996006721 A1 WO 1996006721A1 CH 9500182 W CH9500182 W CH 9500182W WO 9606721 A1 WO9606721 A1 WO 9606721A1
Authority
WO
WIPO (PCT)
Prior art keywords
extruder
screw
screws
housing
pressure
Prior art date
Application number
PCT/CH1995/000182
Other languages
German (de)
French (fr)
Inventor
Josef Manser
Christian Millauer
Heinz Resch
Original Assignee
Bühler 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 Bühler AG filed Critical Bühler AG
Priority to EP95926827A priority Critical patent/EP0777565A1/en
Publication of WO1996006721A1 publication Critical patent/WO1996006721A1/en

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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2561—Mounting or handling of the screw
    • 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

Definitions

  • the invention relates to an extruder with a screw extension device according to the preamble of claim 1.
  • extrusion of food and other goods is increasingly used due to the economic advantages.
  • extruders like screw machines and pasta presses, are subject to very high requirements with regard to Sa ⁇ nitation of the product-carrying parts.
  • the necessary cleaning of the product-carrying parts requires the extruder screws to be removed (analogously in the case of replacement due to wear). This takes place by pulling out or ejecting the screws or by moving down or opening the screw housing with a high level of equipment and / or space.
  • a push rod is connected to the hydraulic piston of a screw adjusting device by means of a mechanical coupling, the coupling taking the push rod only in the screw ejection direction.
  • the push rod is provided with drivers, the distance of which corresponds approximately to the piston stroke. The screw is ejected from the cylinder in several strokes, the increasing free cantilever length is not supported.
  • GB-A-893597 discloses an extrusion device in which the screws can be ejected and cooled.
  • the ejection of the screw requires a hollow shaft through the gearbox to receive the ejection shaft.
  • the ejection mechanism is arranged behind the extruder in the axial direction, which results in long overall lengths.
  • FR-A-11266221 Such solutions are no longer practical in the planetary gears used today, so that the extrusion press cylinders are at least partially dismantled and the screws are then removed.
  • a device for extruding plastic masses allows the die plate to be lifted off. This is done by means of a hydraulic pressure counteracting the spring force of a tension spring.
  • the die plate sits on the piston rods and can be released in a pivoted-out position.
  • the die plate, a traverse and pressure medium cylinders arranged between them form a kind of frame which absorbs the pressures that occur and guides them into the bearing blocks. The latter in turn can be supported on the outer rings of the housing sections of the extruder.
  • the invention is therefore based on the object of further developing a generic extruder with a screw removal device in such a way that the extrusion or extraction of the extruder screws is considerably simplified.
  • This object is achieved with the characterizing features of claim 1.
  • either the gear is moved forward or the housing of the extruder is pulled back in order to expose the screw of the extruder completely or at least partially.
  • the invention is described in more detail in an exemplary embodiment with reference to a drawing. In the drawing they show
  • Fig. 1 the screw removal device by means of a movable gear (detail)
  • Fig. 2 the screw removal device by means of a retractable housing of the extruder (detail).
  • a twin-shaft extruder (FIG. 1) contains a displaceably mounted gear 1 and a pressure cylinder 2 with piston rods 3.
  • the piston rods 3 are connected to the fixed extruder housing 5 and a housing plate 15.
  • the gear 1 with the extruder screws 9 coupled to it is first moved forward by actuating the pressure cylinders 2, the screw coupling 4 is released and the gear 1 is moved back again.
  • a pressure piece 6 is then inserted between the screw coupling 4 and the end faces of the extruder screws 9 on the gearbox side.
  • the pressure piece 6 is adapted to the contour of the bore 7 receiving the extruder screws.
  • the extruder screws are now ejected from the bore 7 of the extruder housing 5 in accordance with the length dimension of the pressure piece 6.
  • the extruder screws 9 are further ejected. It is advantageous to enclose the head pieces of the extruder screws during the ejection process by counterparts (not shown) and thus to protect them.
  • the die 13 is pivoted out in the usual way before the ejection process begins.
  • twin-screw extruder (FIG. 2) is provided with an axially parallel clamping tool 8 which is mounted on a granulating device 14.
  • the granulating device 14 is first pushed to the side, then the die 13 is pivoted out and then the extruder housing 5 is withdrawn by means of the pressure cylinder 11. As a result, the extruder screws 9 protrude from the extruder housing 5. The extruder housing 5 with the above extruder screws 9 is now moved forward again. Then the, on the granulating device 14 longitudinally displaceable clamping tool 8 to the push rods 10, z. B. coupled by means of grip screws 16. The push rods 10 are firmly connected to the fixed gear 1.
  • the clamping tool 8 now includes, for. B. with a Spannhydrau ⁇ lik the extruder screws 9 on the outer diameter. Subsequently, the extruder housing 5 is withdrawn via the pressure cylinders 11, the extruder screws 9, however, stopping due to the activated clamping tool 8 and the fixed pressure rods 10, and thus the pressure cylinders 11 are "pulled” out of the extruder housing 5 by the respective amount of a stroke. This process is repeated until the extruder screws 9 protrude completely from the extruder housing 5.
  • the particular advantage of the solution according to the invention is that the overall length of the extruder arrangement remains virtually unchanged and the expenditure in terms of apparatus and time for the screw removal is comparatively low.

Abstract

The invention relates to an extruder with a worm drive device, especially for use in foodstuff extruders and the like. In order to simplify the construction of extruder worms (9), the drive (1) and/or the extruder housing (5) is/are axially movable, whereby the movement is effected by means of pressure cylinders (2) and piston rods (3) after the extruder worms (9) have been disconnected from the drive (1).

Description

Extruder mit Schneckenausbauvorrichtung Extruder with screw removal device
Die Erfindung betrifft einen Extruder mit Schneckenausbau¬ vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to an extruder with a screw extension device according to the preamble of claim 1.
Sie findet insbesondere Anwendung in Extrudern und dgl .It is used in particular in extruders and the like.
Das Extrudieren von Nahrungsmitteln und anderen Gütern findet auf Grund der wirtschaftlichen Vorteile zunehmende Anwendung. Dabei unterliegen diese Extruder, wie auch Schneckenmaschinen und Teigwarenpressen, sehr hohen Anforderungen bzgl . der Sa¬ nitation der produktführenden Teile. Die notwendige Reinigung der produktführenden Teile bedingt einen Ausbau der Extruder¬ schnecken (analog bei verschleissbedingtem Ersatz) . Dies er- folgt durch Ausziehen oder Ausstossen der Schnecken oder durch Abfahren bzw. Aufklappen der Schneckengehäuse mit hohem apparativem und/oder räumlichem Aufwand.The extrusion of food and other goods is increasingly used due to the economic advantages. These extruders, like screw machines and pasta presses, are subject to very high requirements with regard to Sa¬ nitation of the product-carrying parts. The necessary cleaning of the product-carrying parts requires the extruder screws to be removed (analogously in the case of replacement due to wear). This takes place by pulling out or ejecting the screws or by moving down or opening the screw housing with a high level of equipment and / or space.
Bekannt sind spindelbetätigte Ab- bzw. Ausziehvorrichtungen mit einem bzw. zwei Zylindern. So beschreibt die DE-AS- 1268367 eine Vorrichtung zum Ausstossen der Schnecke aus dem Presszylinder einer Schneckenstrangpresse. Hierbei wird eine Druckstange mit dem Hydraulikkolben einer Schneckeneinstell¬ vorrichtung mittels einer mechanischen Kupplung verbunden, wobei die Kupplung die Druckstange jeweils nur in der Schneckenausstossrichtung mitnimmt . Zudem ist die Druckstange mit Mitnehmern versehen, deren Abstand etwa dem Kolbenhub entspricht . Die Schnecke wird in mehreren Hüben aus dem Zylinder ausgestossen, die ansteigende freie Kraglänge ist nicht unterstütz .Spindle-operated pull-off or pull-out devices with one or two cylinders are known. For example, DE-AS-1268367 describes a device for ejecting the screw from the press cylinder of a screw extruder. In this case, a push rod is connected to the hydraulic piston of a screw adjusting device by means of a mechanical coupling, the coupling taking the push rod only in the screw ejection direction. In addition, the push rod is provided with drivers, the distance of which corresponds approximately to the piston stroke. The screw is ejected from the cylinder in several strokes, the increasing free cantilever length is not supported.
Eine weitere Schneckenausstossvorrichtung für formfüllende Maschinen zeigt die DE-B-1230553. Diese erfordert es, eine lange Ausstossstange durch das Getriebe hindurchzuführen, so dass Druckzylinder und Druckkolben in Achsrichtung hincer der Schneckenmaschine angeordnet sind. Bekannt sind ebenfalls Lösungen zur Montage und Demontage von Extruderschnecken. Eine solche zeigt die EP-A-271399, bei der Extruderschnecken fixiert transportiert und gelagert werden, jedoch ist das Handling mittels Lastaufnähme- und Anschlag¬ mittel sehr umständlich.Another screw ejection device for form-filling machines is shown in DE-B-1230553. This requires a long ejection rod to be passed through the gear so that the pressure cylinder and pressure piston are arranged in the axial direction towards the screw machine. Solutions for the assembly and disassembly of extruder screws are also known. One such is shown in EP-A-271399, in which extruder screws are transported and stored in a fixed manner, but handling by means of load-carrying and lifting means is very cumbersome.
In der GB-A-893597 wird eine Extrudiervorrichtung offenbart, bei der die Schnecken ausstoss- und kühlbar sind. Das Aus¬ stossen der Schnecke erfordert eine Hohlwelle durch das Ge¬ triebe, um die Ausstosswelle aufzunehmen. Der Ausstoεsmecha- nismus ist in Achsrichtung hinter dem Extruder angeordnet, was hohe Baulängen ergibt. Eine ähnliche Lösung zeigt die FR- A-1126621. Derartige Lösungen sind bei den heute verwendeten Planetengetrieben nicht mehr praktikabel, so dass auch wei¬ terhin die Presszylinder der Extruder zumindest teilweise demontiert und die Schnecken anschliessend herausgezogen wer¬ den.GB-A-893597 discloses an extrusion device in which the screws can be ejected and cooled. The ejection of the screw requires a hollow shaft through the gearbox to receive the ejection shaft. The ejection mechanism is arranged behind the extruder in the axial direction, which results in long overall lengths. A similar solution is shown in FR-A-1126621. Such solutions are no longer practical in the planetary gears used today, so that the extrusion press cylinders are at least partially dismantled and the screws are then removed.
Eine Vorrichtung zum Extrudieren plastischer Massen gemäss DE-C-3826641 gestattet das Abheben der Matrizenplatte. Dies erfolgt mittels eines, der Federkraft einer Spannfeder entge¬ genwirkenden Hydraulikdruckes . Die Matrizenplatte sitzt an den Kolbenstangen und kann in einer ausgeschwenkten Lage ge¬ löst werden. Die Matrizenplatte, eine Traverse und dazwischen angeordnete Druckmittelzylinder bilden eine Art Rahmen, der die auftretenden Drücke aufnimmt und in die Lagerböcke lei¬ tet. Letztere wiederum können an den Aussenringen der Gehäu- seschüsse des Extruders abgestützt sein.A device for extruding plastic masses according to DE-C-3826641 allows the die plate to be lifted off. This is done by means of a hydraulic pressure counteracting the spring force of a tension spring. The die plate sits on the piston rods and can be released in a pivoted-out position. The die plate, a traverse and pressure medium cylinders arranged between them form a kind of frame which absorbs the pressures that occur and guides them into the bearing blocks. The latter in turn can be supported on the outer rings of the housing sections of the extruder.
Der Erfindung liegt daher die Aufgabe zugrunde, einen gat- tungs-gemässen Extruder mit Schneckenausbauvorrichtung so weiterzu-entwickeln, dass das Ausstossen bzw. Herausziehen der Extruderschnecken wesentlich vereinfacht wird. Diese Aufgabe wird mit den kennzeichnenden Merkmalen des An¬ spruchs 1 gelös . Hierzu wird entweder das Getriebe vorgefah¬ ren oder das Gehäuse des Extruders zurückgezogen, um die Schnecke des Extruders ganz oder zumindest teilweise freizu¬ legen. Die Erfindung wird nachfolgend in einem Ausführungsbeispiel an Hand einer Zeichnung näher beschrieben. In der Zeichnung zeigen dieThe invention is therefore based on the object of further developing a generic extruder with a screw removal device in such a way that the extrusion or extraction of the extruder screws is considerably simplified. This object is achieved with the characterizing features of claim 1. For this purpose, either the gear is moved forward or the housing of the extruder is pulled back in order to expose the screw of the extruder completely or at least partially. The invention is described in more detail in an exemplary embodiment with reference to a drawing. In the drawing they show
Fig. 1: die Schneckenausbauvorrichtung mittels verfahrbarem Getriebe (Ausschnitt)Fig. 1: the screw removal device by means of a movable gear (detail)
Fig. 2: die Schneckenausbauvorrichtung mittels rückziehbarem Gehäuse des Extruders (Ausschnitt) .Fig. 2: the screw removal device by means of a retractable housing of the extruder (detail).
Ein Zweiwellen-Extruder (Fig. 1) enthält ein verschiebbar ge¬ lagertes Getriebe 1 und einen Druckzylinder 2 mit Kolbenstan¬ gen 3. Die Kolbenstangen 3 sind mit dem feststehenden Extru¬ dergehäuse 5 und einer Gehäuseplatte 15 verbunden.A twin-shaft extruder (FIG. 1) contains a displaceably mounted gear 1 and a pressure cylinder 2 with piston rods 3. The piston rods 3 are connected to the fixed extruder housing 5 and a housing plate 15.
Zum Ausstossen der Extruderschnecken wird zunächst das Ge¬ triebe 1 mit den daran gekuppelten Extruderschnecken 9 durch Beaufschlagung der Druckzylinder 2 nach vorn gefahren, die Schneckenkupplung 4 gelöst und das Getriebe 1 wieder zurück¬ gefahren. Anschliessend wird ein Druckstück 6 zwischen Schneckenkupplung 4 und den getriebeseitigen Stirnseiten der Extruderschnecken 9 eingesetz . Das Druckstück 6 ist an die Kontur der die Extruderschnecken aufnehmenden Bohrung 7 ange- passt. Durch Beaufschlagung des Druckzylinders 2 werden die Extruderschnecken nun entsprechend dem Längenmass des Druck¬ stückes 6 aus der Bohrung 7 des Extrudergehäuses 5 ausgestos- sen. Durch Einsetzen weiterer Druckstücke 6 werden die Extru¬ derschnecken 9 weiter ausgestossen. Es ist vorteilhaft, die Kopfstücken der Extruderschnecken während des Ausstossvorgan- ges durch nicht dargestellte Gegenstücke zu umfassen und so zu schützen. Die Matrize 13 wird vor Beginn des Ausstoss-vor- ganges in üblicher Weise ausgeschwenkt.To eject the extruder screws, the gear 1 with the extruder screws 9 coupled to it is first moved forward by actuating the pressure cylinders 2, the screw coupling 4 is released and the gear 1 is moved back again. A pressure piece 6 is then inserted between the screw coupling 4 and the end faces of the extruder screws 9 on the gearbox side. The pressure piece 6 is adapted to the contour of the bore 7 receiving the extruder screws. By acting on the pressure cylinder 2, the extruder screws are now ejected from the bore 7 of the extruder housing 5 in accordance with the length dimension of the pressure piece 6. By inserting further pressure pieces 6, the extruder screws 9 are further ejected. It is advantageous to enclose the head pieces of the extruder screws during the ejection process by counterparts (not shown) and thus to protect them. The die 13 is pivoted out in the usual way before the ejection process begins.
Anstelle der Druckstücke 6 kann ebenfalls ein Teleskopzylin- der verwendet werden, was den Ausstossvorgang vereinfacht und ein Kontinuierliches Ausstossen der Extruderscnnecken ermög¬ licht . In einer zweiten Variante ist der Zweiwellen-Extruder (Fig. 2) mit einem achsparallel angeordneten Spannwerkzeug 8 verse¬ hen, welches an einer Granuliervorrichtung 14 gelagert ist.Instead of the pressure pieces 6, a telescopic cylinder can also be used, which simplifies the ejection process and enables the extruder screws to be continuously ejected. In a second variant, the twin-screw extruder (FIG. 2) is provided with an axially parallel clamping tool 8 which is mounted on a granulating device 14.
Zum Schneckenausziehen wird zuerst die Granuliervorrichtung 14 zur Seite geschoben, danach die Matrize 13 ausgeschwenkt und anschliessend das Extrudergehäuse 5 mittels Druckzylinder 11 zurückgezogen. Dadurch ragen die Extruderschnecken 9 aus dem Extrudergehäuse 5 heraus . Das Extrudergehäuse 5 mit den vorstehenden ExtrüderSchnecken 9 wird nun wieder nach vorn gefahren. Sodann wird das, an der Granuliervorrichtung 14 längs verschiebbare Spannwerkzeug 8 an die Druckstangen 10, z. B. mittels Griffschrauben 16 gekuppelt. Die Druckstangen 10 sind fest mit dem ortsfesten Getriebe 1 verbunden.To remove the screw, the granulating device 14 is first pushed to the side, then the die 13 is pivoted out and then the extruder housing 5 is withdrawn by means of the pressure cylinder 11. As a result, the extruder screws 9 protrude from the extruder housing 5. The extruder housing 5 with the above extruder screws 9 is now moved forward again. Then the, on the granulating device 14 longitudinally displaceable clamping tool 8 to the push rods 10, z. B. coupled by means of grip screws 16. The push rods 10 are firmly connected to the fixed gear 1.
Das Spannwerkzeug 8 umfasst nun, z. B. mit einer Spannhydrau¬ lik die Extruderschnecken 9 am Aussendurchmesser. Nachfolgend wird über die Druckzylinder 11 das Extrudergehäuse 5 zurück¬ gezogen, wobei die ExtrüderSchnecken 9 jedoch auf Grund des aktivierten Spannwerkzeuges 8 und der fixen Druckstangen 10 stehenbleiben und so um den jeweiligen Betrag eines Hubes der Druckzylinder 11 aus dem Extrudergehause 5 "gezogen" werden. Dieser Vorgang wird solange wiederholt, bis die Extruder- schnecken 9 vollständig aus dem Extrudergehäuse 5 herausra- gen.The clamping tool 8 now includes, for. B. with a Spannhydrau¬ lik the extruder screws 9 on the outer diameter. Subsequently, the extruder housing 5 is withdrawn via the pressure cylinders 11, the extruder screws 9, however, stopping due to the activated clamping tool 8 and the fixed pressure rods 10, and thus the pressure cylinders 11 are "pulled" out of the extruder housing 5 by the respective amount of a stroke. This process is repeated until the extruder screws 9 protrude completely from the extruder housing 5.
Mit zunehmender Kraglänge der Extruderschnecken 9 werden diese in üblicher Weise unterstützt.As the cantilever length of the extruder screws 9 increases, they are supported in the usual way.
Der besondere Vorteil der erfindungsgemässen Lösung liegt darin, dass die Baulänge der Extruderanordnung nahezu unver¬ ändert bleibt und der apparative und zeitliche Aufwand für den Schneckenausbau vergleichsweise gering is .The particular advantage of the solution according to the invention is that the overall length of the extruder arrangement remains virtually unchanged and the expenditure in terms of apparatus and time for the screw removal is comparatively low.
Die Erfindung ist nicht auf die genannten Ausführungsvarian- ten begrenz . Zusammenstellung der KurzzeichenThe invention is not limited to the design variants mentioned. Compilation of the abbreviations
Getriebetransmission
DruckzylinderImpression cylinder
KolbenstangePiston rod
Schneckenkupp1ungWorm clutch
ExtrudergehauseExtruder housing
DruckstückPressure piece
Bohrungdrilling
SpannwerkzeugClamping tool
ExtruderschneckeExtruder screw
DruckstangePush rod
DruckzylinderImpression cylinder
KopfstückHeadpiece
Matrizedie
GranuliervorrichtungPelletizer
GehäuseplatteHousing plate
Griffschraube Grip screw

Claims

Patentansprüche claims
1. Extruder mit Schneckenausbauvorrichtung für Extruder¬ schnecken, wobei das Extrudergehäuse mittels Druckzylinder und Kolbenstangen axial abgestützt ist, dadurch gekennzeichnet, dass das Getriebe (1) des Extruders und/oder das Extrudergehäuse (5) nach Entkupplung von Ge¬ triebe (1) und Extruderschnecken (9) in Schritten axial ver¬ schiebbar angeordnet ist, wobei der Hub von Druckzylindern (2) die Hubzahl bzw. den Verschiebeweg in Abhängigkeit von der Länge der auszubauenden Extruderschnecken (9) bestimmt.1. Extruder with screw removal device for extruder screws, the extruder housing being axially supported by means of pressure cylinders and piston rods, characterized in that the gear (1) of the extruder and / or the extruder housing (5) after decoupling of gears (1) and Extruder screws (9) is arranged to be axially displaceable in steps, the stroke of pressure cylinders (2) determining the number of strokes or the displacement depending on the length of the extruder screws (9) to be removed.
2. Extruder nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (1) des Extruders verschiebbar angeordnet ist.2. Extruder according to claim 1, characterized in that the gear (1) of the extruder is arranged displaceably.
3. Extruder nach Anspruch 1, dadurch gekennzeichnet, dass das Extrudergehäuse (5) verschiebbar (rückziehbar) angeordnet ist.3. Extruder according to claim 1, characterized in that the extruder housing (5) is arranged displaceably (retractable).
4. Extruder nach Anspruch 1, dadurch gekennzeichnet, dass der Extruder ein Ein- oder Zweiwellenextruder ist . 4. Extruder according to claim 1, characterized in that the extruder is a single- or twin-screw extruder.
PCT/CH1995/000182 1994-08-31 1995-08-16 Extruder with a worm drive device WO1996006721A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95926827A EP0777565A1 (en) 1994-08-31 1995-08-16 Extruder with a worm drive device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2662/94-3 1994-08-31
CH266294 1994-08-31

Publications (1)

Publication Number Publication Date
WO1996006721A1 true WO1996006721A1 (en) 1996-03-07

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ID=4238766

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Application Number Title Priority Date Filing Date
PCT/CH1995/000182 WO1996006721A1 (en) 1994-08-31 1995-08-16 Extruder with a worm drive device

Country Status (2)

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EP (1) EP0777565A1 (en)
WO (1) WO1996006721A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0976524A1 (en) * 1998-07-25 2000-02-02 Bühler AG Extruder
WO2010018062A2 (en) * 2008-08-13 2010-02-18 Kraussmaffei Berstorff Gmbh Extruding device
EP2017063A3 (en) * 2007-07-19 2013-05-22 SSD Parvex SAS Extrusion device with torque motor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090434A (en) * 1935-03-02 1937-08-17 Firm Gebruder Buhler Screw press for working plastic masses
GB946194A (en) * 1961-11-16 1964-01-08 Eckert & Ziegler Gmbh Injection unit for filling moulds of injection moulding machines
DE1268367B (en) * 1963-02-11 1968-05-16 Kloeckner Humboldt Deutz Ag Device for ejecting the screw from the press cylinder of a screw extruder
US4004787A (en) * 1975-01-10 1977-01-25 Usm Corporation Mixing and venting extruder
DE3331502A1 (en) * 1983-09-01 1985-03-21 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Device for drawing the screw out of a discharging or homogenising extruder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090434A (en) * 1935-03-02 1937-08-17 Firm Gebruder Buhler Screw press for working plastic masses
GB946194A (en) * 1961-11-16 1964-01-08 Eckert & Ziegler Gmbh Injection unit for filling moulds of injection moulding machines
DE1268367B (en) * 1963-02-11 1968-05-16 Kloeckner Humboldt Deutz Ag Device for ejecting the screw from the press cylinder of a screw extruder
US4004787A (en) * 1975-01-10 1977-01-25 Usm Corporation Mixing and venting extruder
DE3331502A1 (en) * 1983-09-01 1985-03-21 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Device for drawing the screw out of a discharging or homogenising extruder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0976524A1 (en) * 1998-07-25 2000-02-02 Bühler AG Extruder
EP2017063A3 (en) * 2007-07-19 2013-05-22 SSD Parvex SAS Extrusion device with torque motor
WO2010018062A2 (en) * 2008-08-13 2010-02-18 Kraussmaffei Berstorff Gmbh Extruding device
WO2010018062A3 (en) * 2008-08-13 2010-05-06 Kraussmaffei Berstorff Gmbh Extruding device
CN102123843A (en) * 2008-08-13 2011-07-13 克劳斯马菲贝斯托夫有限公司 Extruding device
US9108345B2 (en) 2008-08-13 2015-08-18 Kraussmaffei Berstorff Gmbh Extruding device

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Publication number Publication date
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