DE1014735B - Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds - Google Patents

Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds

Info

Publication number
DE1014735B
DE1014735B DES29504A DES0029504A DE1014735B DE 1014735 B DE1014735 B DE 1014735B DE S29504 A DES29504 A DE S29504A DE S0029504 A DES0029504 A DE S0029504A DE 1014735 B DE1014735 B DE 1014735B
Authority
DE
Germany
Prior art keywords
compounds
roller
production
extrusion press
thermoplastic
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
DES29504A
Other languages
German (de)
Inventor
Karl Metz
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 DES29504A priority Critical patent/DE1014735B/en
Publication of DE1014735B publication Critical patent/DE1014735B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/243—Extrusion presses; Dies therefor using screws or worms using two or more screws working in the same chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

Strangpresse zur Aufbereitung bzw. Herstellung von Massen oder Formteilen aus thermoplastischen Kunststoffmassen Die Erfindung betrifft eine Strangpresse zur Aufbereitung von thermoplastischen Massen bzw. zur Herstellung von Formkörpern aus solchen Massen, die mittels in einem Gehäuse drehbar angeordneten Schnecken arbeitet, durch welche die Masse gemischt, geknetet und danach durch das Austrittsmundstück befördert wird. Extrusion press for the preparation or production of masses or molded parts Made of thermoplastic plastic masses The invention relates to an extrusion press for the preparation of thermoplastic masses or for the production of moldings from such masses by means of screws rotatably arranged in a housing works by which the mass is mixed, kneaded and then passed through the outlet mouthpiece is promoted.

Die Verarbeitung von thermoplastischen Massen in einer Strangpresse, die mit zwei oder mehreren Schnecken ausgerüstet sind, ist an sich bekannt. The processing of thermoplastic masses in an extrusion press, which are equipped with two or more screws is known per se.

Man hat die Schnecken in verschiedener Weise ausgebildet, zwei ein- und mehrgängige Schnecken verwendet, die entweder in gleicher oder in entgegengesetzter Richtung umlaufen. Es sind auch Schneckenpressen mit nur einer Schnecke bekannt, die an der Austrittsseite einen Knetkörper aufweisen. Ferner hat man die Schnecken auch an ihrem Ende an der Austrittsseite konisch ausgebildet. Außerdem ist es bekannt, an der Austrittsseite der Schneckenpresse besondere Siebköpfe anzuordnen. Trotzdem hat man in vielen Fällen nicht die gewünschte innige Durchmischung und Knetung, insbesondere eine entsprechende Gelierung der Masse erreicht.The snails have been designed in different ways, two and multi-flight screws are used, either in the same or in opposite directions Circulate direction. Screw presses with only one screw are also known, which have a kneading body on the outlet side. You also have the snails also designed conically at its end on the exit side. It is also known to arrange special sieve heads on the outlet side of the screw press. Nevertheless in many cases you do not have the desired intimate mixing and kneading, in particular, a corresponding gelation of the mass is achieved.

Gemäß der Erfindung wird eine wesentliche Verbesserung, insbesondere in bezug auf die Gelierung der thermoplastischen Massen, dadurch erzielt, daß die Schnecken an der Austrittsseite mehrere gegeneinander und gegen die Gehäusewand arbeitende walzen-, insbesondere zylinderförmige Knetkörper aufweisen. Die Schneckenpresse ist in eine Einzugszone, Anwärmzone und Walz- oder Gelierzonen unterteilt. Die aufzubereitende Masse bewegt sich in der Einzugs- und Anwärmzone geradlinig und wird durch die walzenförmigen Knetkörper und daran anschließend durch das formgebende Mundstück der Schneckenpresse gepreßt. Hierbei ist es vorteilhaft, die walzenförmigen Knetkörper in axialer Richtung gegenseitig zu unterteilen, damit jeweils eine entsprechende Umleitung des Massestranges erfolgt und dieser gezwungen wird, durch den Mittelspalt und den Randspalt der Knetkörper hindurchzutreten. Vorteilhaft ist es auch, die walzenförmigen Knetkörper in mehrere Stufen mit verschiedenen Walzenspalten zu unterteilen. According to the invention there is a substantial improvement, in particular with regard to the gelation of the thermoplastic compositions, achieved in that the Several screws on the outlet side against each other and against the housing wall have working roller, in particular cylindrical kneading body. The screw press is divided into a feed zone, heating zone and rolling or gelling zones. The one to be processed The mass moves in a straight line in the feed and heating zone and is made by the cylindrical Kneading body and then through the shaping mouthpiece of the screw press pressed. It is advantageous here to move the roller-shaped kneading bodies in the axial direction to subdivide each other, so that a corresponding diversion of the ground strand takes place and this is forced through the middle gap and the edge gap of the kneading body to step through. It is also advantageous to divide the roller-shaped kneading bodies into several Subdivide stages with different roller gaps.

In den Fig. 1 und 2 ist ein Ausführungsbeispiel der Erfindung dargestellt. 1 and 2, an embodiment of the invention is shown.

Die Strangpresse wird von den in dem Gehäuse 1 sich gegeneinander drehenden Schnecken 2 gebildet, welche die thermoplastische Masse 5 durch die an der Austrittsseite angeordneten walzenförmigen Knetkörper hindurch nach dem Mundstück 4 fördern. Jede Schnecke ist mit mehreren Knetkörpern 3 versehen, die in axialer Richtung gegenseitig unterteilt sind. The extruder is in the housing 1 against each other rotating screws 2 formed, which the thermoplastic mass 5 by the at the outlet side arranged roller-shaped kneading body through to the mouthpiece 4 promote. Each screw is provided with several kneading bodies 3, which in axial Direction are mutually divided.

Die Unterteilung erfolgt durch eine entsprechende scheibenartige Erweiterung 6, die an manchen Stellen bis an die Mantelbohrung des Gehäuses 1 ragen und mit Laufsitz in der Mantelbohrung laufen. Durch diese scheibenartigen Erweiterungen wird die Masse in axialer Richtung abgeschirmt und gezwungen, jeweils durch den Mittelspalt 7 und den Randspalt 8 hindurchzutreten. Dieser Vorgang wiederholt sich mehrmals bis zum Austritt 4. In der Zeichnung ist an Hand der Pfeile 9 der Fluß der Masse durch die walzenförmigen Knetkörper dargestellt. Die Knetkörper können in mehreren Stufen mit verschiedenem Walzenspalt unterteilt sein.The subdivision is made by a corresponding disk-like extension 6, which protrude in some places up to the casing bore of the housing 1 and with Running fit in the casing bore. Through these disc-like extensions the mass is shielded in the axial direction and forced, in each case by the Middle gap 7 and the edge gap 8 to pass through. This process is repeated several times until exit 4. In the drawing, arrows 9 indicate the flow the mass represented by the roller-shaped kneading body. The kneading bodies can be divided into several stages with different nips.

Claims (3)

PATENTANSPROCHE: 1. Strangpresse zum Aufbereiten, insbesondere zum Gelieren von thermoplastischen oder gummiähnlichen Massen oder zum Herstellen von Formkörpern aus derartigen Massen, mit zwei oder mehreren in einem Gehäuse drehbar angeordneten Schnecken, dadurch gekennzeichnet, daß die Schnecken an der Austrittsseite mehrere gegen- einander und gegen die Gehäusewand arbeitende, walzen-, insbesondere zylinderförmige Knetkörper aufweisen. PATENT CLAIM: 1. Extrusion press for processing, in particular for Gelling of thermoplastic or rubber-like masses or for the production of Moldings made of such masses, rotatable with two or more in one housing arranged screws, characterized in that the screws on the outlet side several opposing each other and against the housing wall, roller, in particular have cylindrical kneading bodies. 2. Strangpresse nach Anspruch 1, dadurch gekennzeichnet, daß die walzenförmigen Knetkörper in axialer Richtung gegenseitig unterteilt sind. 2. Extruder according to claim 1, characterized in that the roller-shaped kneading body are mutually divided in the axial direction. 3. Strangpresse nach Anspruch 1 und 2, da- durch gekennzeichnet, daß die walzenförmigen Knetkörper mehrere Stufen mit verschieden großen Walzenspalten aufweisen. 3. Extruder according to claim 1 and 2, da- characterized by that the roller-shaped kneading body several stages with differently sized roller gaps exhibit. In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. 2 469 999, 2 535 286, 2 543 307, 2 573 440, 2593265. References considered: U.S. Patents No. 2,469 999, 2,535,286, 2,543,307, 2,573,440, 2593265.
DES29504A 1952-07-28 1952-07-28 Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds Pending DE1014735B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES29504A DE1014735B (en) 1952-07-28 1952-07-28 Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES29504A DE1014735B (en) 1952-07-28 1952-07-28 Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds

Publications (1)

Publication Number Publication Date
DE1014735B true DE1014735B (en) 1957-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
DES29504A Pending DE1014735B (en) 1952-07-28 1952-07-28 Extrusion press for the preparation or production of compounds or molded parts from thermoplastic compounds

Country Status (1)

Country Link
DE (1) DE1014735B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239882A (en) * 1962-07-18 1966-03-15 Sterling Extruder Corp Dispersion head for extruder
DE1288294B (en) * 1962-05-15 1969-01-30 Farrel Corp Continuously working mixer for plastic masses
US3632256A (en) * 1969-03-19 1972-01-04 Union Carbide Corp Extrusion-compounding apparatus
US5000900A (en) * 1988-06-15 1991-03-19 Krauss-Maffei A.G. Twin screw extruder
WO1993014921A1 (en) * 1992-01-31 1993-08-05 Maschinenfabrik S. Rockstedt Gmbh Multi-shaft continuously operating mixing and kneading machine for plasticisable compounds
US5499870A (en) * 1993-11-12 1996-03-19 Maschinenfabrik S. Rockstedt Gmbh Multiscrew, continuous mixing machine for plasticizable compounds
EP0875356A2 (en) * 1997-04-30 1998-11-04 Krupp Werner & Pfleiderer GmbH Multiple screw extruder, espcially twin screw extruder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469999A (en) * 1945-05-30 1949-05-10 Dow Chemical Co Mixing head for extrusion machines
US2535286A (en) * 1946-11-13 1950-12-26 Western Electric Co Apparatus for working and advancing plastic material
US2543307A (en) * 1948-08-06 1951-02-27 Union Carbide & Carbon Corp Plastic milling apparatus
US2573440A (en) * 1948-05-06 1951-10-30 Western Electric Co Apparatus for plasticizing plastic material
US2593265A (en) * 1950-10-11 1952-04-15 Farrel Birmingham Co Inc Apparatus for treating plastic materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469999A (en) * 1945-05-30 1949-05-10 Dow Chemical Co Mixing head for extrusion machines
US2535286A (en) * 1946-11-13 1950-12-26 Western Electric Co Apparatus for working and advancing plastic material
US2573440A (en) * 1948-05-06 1951-10-30 Western Electric Co Apparatus for plasticizing plastic material
US2543307A (en) * 1948-08-06 1951-02-27 Union Carbide & Carbon Corp Plastic milling apparatus
US2593265A (en) * 1950-10-11 1952-04-15 Farrel Birmingham Co Inc Apparatus for treating plastic materials

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288294B (en) * 1962-05-15 1969-01-30 Farrel Corp Continuously working mixer for plastic masses
DE1288294C2 (en) * 1962-05-15 1973-10-04 Farrel Corp Continuously working mixer for plastic masses
US3239882A (en) * 1962-07-18 1966-03-15 Sterling Extruder Corp Dispersion head for extruder
US3632256A (en) * 1969-03-19 1972-01-04 Union Carbide Corp Extrusion-compounding apparatus
US5000900A (en) * 1988-06-15 1991-03-19 Krauss-Maffei A.G. Twin screw extruder
WO1993014921A1 (en) * 1992-01-31 1993-08-05 Maschinenfabrik S. Rockstedt Gmbh Multi-shaft continuously operating mixing and kneading machine for plasticisable compounds
DE4202821A1 (en) * 1992-01-31 1993-08-19 Farrel Rockstedt Gmbh MULTI-WAVE CONTINUOUSLY WORKING MIXING AND KNeading MACHINE FOR PLASTICIZABLE MASSES
US5267788A (en) * 1992-01-31 1993-12-07 Farrel Corporation Multi-screw, continuous mixing and kneading machine with polygonal kneading elements for plasticizable compounds
AU665404B2 (en) * 1992-01-31 1996-01-04 Farrel Corporation Multi-shaft continuously operating mixing and kneading machine for plasticisable compounds
US5499870A (en) * 1993-11-12 1996-03-19 Maschinenfabrik S. Rockstedt Gmbh Multiscrew, continuous mixing machine for plasticizable compounds
EP0875356A2 (en) * 1997-04-30 1998-11-04 Krupp Werner & Pfleiderer GmbH Multiple screw extruder, espcially twin screw extruder
EP0875356A3 (en) * 1997-04-30 2001-10-17 Coperion Werner & Pfleiderer GmbH & Co. KG Multiple screw extruder, espcially twin screw extruder

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