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DE2415585A1 - SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE - Google Patents

SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE

Info

Publication number
DE2415585A1
DE2415585A1 DE2415585A DE2415585A DE2415585A1 DE 2415585 A1 DE2415585 A1 DE 2415585A1 DE 2415585 A DE2415585 A DE 2415585A DE 2415585 A DE2415585 A DE 2415585A DE 2415585 A1 DE2415585 A1 DE 2415585A1
Authority
DE
Germany
Prior art keywords
extruder
screw
tubular
tube
inner cylinder
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
DE2415585A
Other languages
German (de)
Inventor
Juergen Dipl Ing Brauns
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.)
Demag Kunststofftechnik Zweigniederlassung der Demag AG
Original Assignee
Demag Kunststofftechnik Zweigniederlassung der Demag 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 Demag Kunststofftechnik Zweigniederlassung der Demag AG filed Critical Demag Kunststofftechnik Zweigniederlassung der Demag AG
Priority to DE2415585A priority Critical patent/DE2415585A1/en
Priority to IT21626/75A priority patent/IT1034517B/en
Priority to NL7503494A priority patent/NL7503494A/en
Priority to FR7509883A priority patent/FR2265520A1/en
Publication of DE2415585A1 publication Critical patent/DE2415585A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/02—Seating or securing beads on rims
    • B60C15/028—Spacers between beads
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/51—Screws with internal flow passages, e.g. for molten material
    • 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
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

DEHA£ Kunststofftechnik 27. März 1974DEHA £ Kunststofftechnik March 27, 1974

Gesellschaft mit beschränkter Haftung Ε&Τ 3Limited Liability Company Ε & Τ 3

85 Nürnberg Pa/me85 Nuremberg Pa / me

Schneckenextruder mit einer als Rohr ausgebildeten Extruderschnecke Screw extruder with an extruder screw designed as a tube

Die Erfindung bezieht sich auf einen Schneckenextruder mit einer als Rohr ausgebildeten Extrudersehnecke, die auf der Innenseite und/oder Außenseite des Rohres die Stege zur Förderung des Materials zwischen Rohr und Außenzylinder und/ oder Rohr und Innenzylinder des Extruders tragt.The invention relates to a screw extruder with an extruder screw formed as a tube, which on the Inside and / or outside of the tube, the webs for conveying the material between the tube and the outer cylinder and / or carries the pipe and inner cylinder of the extruder.

Bei einem bekannten Schneckenextruder (DT-OS 1 950 655) werden zwar einige Nachteile bekannter Extruderkonstruktionen vermieden, welche im wesentlichen in der großen Baugröße und den ungünstigen Fließverhältnissen an den Schneckenausgängen bestanden. Auch ist es bei der bekannten Anordnung möglich, bei Ausführungen die Länge der Extruderkanäle unabhängig vom Durchmesser konstant zu halten.In a known screw extruder (DT-OS 1 950 655) although some disadvantages of known extruder designs avoided, which essentially in the large size and the unfavorable flow conditions existed at the screw outlets. It is also possible with the known arrangement at Designs to keep the length of the extruder channels constant regardless of the diameter.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, den bekannten Schneckenextruder so zu verbessern, daß das Innere des von dem Extruder hergestellten rohr- oder schlauchförmigen Halbzeuges zugänglich ist, um dieses insbesondere mit Kühl- und/oder Stützluft zu beaufschlagen, obne dadurch Teilungen der fließenden Schmelze im Extrudierwerkzeug, z. B. durch Zuführkanäle in den Dornhaltern oder Stegen, zu verursachen.The present invention has the task of improving the known screw extruder so that the interior of the tubular or hose-shaped semi-finished product produced by the extruder is accessible, in particular with cooling and / or to act on supporting air, whether thereby divisions of the flowing melt in the extrusion tool, z. B. through feed channels in the mandrel holders or webs.

509885/1030509885/1030

IKT 3 - Pa/me - 2 - 27. März 1974ICT 3 - Pa / me - 2 - March 27, 1974

Zur Losung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß der Innenzylinder des Extruders hohl ausgebildet ist und einen Zugang zu dem Inneren des von dem Extruder hergestellten rohr- oder schlauchförmigen Halbzeug bildet. Durch diesen Vorschlag wird es in günstiger Weise möglich, unter Verwendung eines Extrudierwerkzeuges ohne Teilung der fließenden Schmelze eine Beaufschlagung des Innenraumes des Halbzeuges mit Kühl- oder Stützluft zu erreichen.To solve the problem, it is proposed according to the invention that that the inner cylinder of the extruder is hollow and an access to the interior of the produced by the extruder tubular or tubular semi-finished product forms. This proposal makes it possible in a favorable manner, using an extrusion tool without a division the flowing melt acts on the interior of the semi-finished product with cooling or support air.

Vorzugsweise ist der Innenzylinder des Extruders mit einer zur Längsachs koaxialen Bohrung versehen.The inner cylinder of the extruder is preferably provided with a bore that is coaxial to the longitudinal axis.

Nach einem weiteren Merkmal der Erfindung nimmt der Zugang zu dem Inneren des Halbzeuges Zu- und Ableitungen für Kühlmedien auf.According to a further feature of the invention, access to the interior of the semi-finished product takes supply and discharge lines for cooling media on.

Nach einem anderen Vorschlag der Erfindung ist vorgesehen, daß die rohiförmige Extruderschnecke in verschiedenen Umfangszonen radiale öffnungen aufweist. Durch diesen Vorschlag soll erreicht werden, daß sich ein intensiver Mischeffekt zwischen dem Außen- und Innenstrom der Schmelze ergeben kann.According to another proposal of the invention it is provided that the tubular extruder screw in different circumferential zones has radial openings. This proposal is intended to achieve an intensive mixing effect can result between the external and internal flow of the melt.

Nach einem anderen Merkmal der Erfindung ist die rohrförmige Extrudersehnecke im Bereich der Fütterzone mit radialen Ausnehmungen versehen. Dadurch wird es möglich, die Versorgung beider Schneckenseiten von einer Seite zu bewerkstelligen, also entweder von der Innen- oder Außenseite.According to another feature of the invention, the tubular extruder chord has radial recesses in the area of the feeding zone Mistake. This makes it possible to supply both sides of the screw from one side, either from the inside or the outside.

Ein Ausführungsbeispiel des erfindungsgemäßen Schneckenextruders ist in der Zeichnung dargestellt.An embodiment of the screw extruder according to the invention is shown in the drawing.

Mit 1 ist der erfindungsgemäße Schneckenextruder bezeichnet, der aus dem Außenzylinder 2 und dem Innetteylinder 3 gebildet wird,1 with the screw extruder according to the invention is designated, which is formed from the outer cylinder 2 and the inner cylinder 3,

509885/1030509885/1030

EKT 3 - Pa/me - 3 - 27. März 1974EKT 3 - Pa / me - 3 - March 27, 1974

Zwischen Außen- 2 und Innenzylinder 3 ist die rohrförmige Extruderschnecke 4 koaxial zu den Zylindern drehbar gelagert. Die rohrförmige Schnecke 4 ist auf der Innenseite mit Stegen 4t) und auf der Außenseite mit Stegen 4a versehen. Die schneckenförmig angeordneten Stege bewirken die Förderung des Materials. Das Material wird bei 5 eingespeist und gelangt in den Zwischenraum zwischen Schneckenrohr 4 und Außenzylinder sowie durch die radiale Ausnehmung 6 zwischen Innenzylinder und Schneckenrohr. Am ausLt0^- seitigen Ende des Sehneckenextruders befindet sich das Extrudierwerkzeug 10 mit dem Ausstoßkanal 11. Die rohrförmige Extruderschnecke ist bei 7 gelagert und über einen nicht dargestellten Antrieb unter Zwischenschaltung eines Getriebes 8 drehangetrieben. Sowohl der Innenzylinder 3 des Extruders 1 sowie das Werkzeug 10 sind mit einer axialen Bohrung 9 versehen, die einen Zugang zu dem Inneren des von dem Extruder hergestellten rohr- oder schlauchförmigen Halbzeuges bliebt. Die Bohrung 9 kann zur Aufnahme von Kühlmittelzu- und ableitungen dienen.The tubular extruder screw 4 is rotatably mounted coaxially to the cylinders between the outer cylinder 2 and the inner cylinder 3. The tubular screw 4 is provided on the inside with webs 4t) and on the outside with webs 4a. The webs, which are arranged in the shape of a helix, promote the conveyance of the material. The material is fed in at 5 and enters the space between the screw tube 4 and the outer cylinder and through the radial recess 6 between the inner cylinder and the screw tube. On foreign t0 ^ - end of the witches corner extruder is the extrusion die 10 with the discharge passage 11. The tubular extruder screw is mounted at 7 and rotationally driven by a drive, not shown, with the interposition of a gearbox. 8 Both the inner cylinder 3 of the extruder 1 and the tool 10 are provided with an axial bore 9, which remains an access to the interior of the tubular or hose-shaped semi-finished product produced by the extruder. The bore 9 can serve to accommodate coolant supply and discharge lines.

509885/1030509885/1030

Claims (1)

IKT 3 - Pa/me - 4 - 27. März 1974ICT 3 - Pa / me - 4 - March 27, 1974 PatentansprücheClaims Schneckenextruder mit einer als Rohr ausgebildeten Extruderechnecke, die auf der Innenseite und/oder Außenseite des Rohres die Stege zur Förderung des Materials zwischen Rohr und Außenzylinder und/oder Rohr und Innenzylinder des Extruders trägt, dadurch gekennzeichnet,Screw extruder with a tube designed as a tube Extruder screw, which on the inside and / or outside of the pipe, the webs to promote the Carries material between the pipe and the outer cylinder and / or the pipe and the inner cylinder of the extruder, characterized, daß der Innenzylinder (3) des Extruders (1) hohl ausgebildet ist und einen Zugang (9) zu dem Inneren des von dem Extruder (1) hergestellten rohr- oder schlauchförmigen Halbzeug bildet.that the inner cylinder (3) of the extruder (1) is hollow and has access (9) to the interior of the tubular or tubular semi-finished product produced by the extruder (1). Schneckenextruder nach Anspruch 1, dadurch gekennzeichnet,Screw extruder according to claim 1, characterized in that daß der Innenzylinder (3) mit einer zur Längsachse koaxialen Bohrung (9) versehen ist.that the inner cylinder (3) with one to the longitudinal axis coaxial bore (9) is provided. Schneckenextruder nach Anspruch 1 und 2, dadurch gekennzeichnet,Screw extruder according to Claims 1 and 2, characterized in that daß der Zugang (9) zu dem Inneren des Halbzeuges Zu- und Ableitungen für Kühlmedien aufnimmt.that the access (9) to the interior of the semi-finished product receives supply and discharge lines for cooling media. Schneckenextruder nach Anspruch 1, dadurch gekennzeichnet,Screw extruder according to claim 1, characterized, daß die rohrförnsige Extruder sehn ecke (4) in verschiedenen Umfangszonen radiale öffnungen aufweist.that the tubular extruder sehn corner (4) in different Has circumferential zones radial openings. 50 9 8 8 5/103050 9 8 8 5/1030 DKT 3 - Pa/me - 5 - 27. MärzDKT 3 - Pa / me - 5 - March 27 5. Schneckenextruder nach Anspruch 1, dadurch gekennzeichnet, daß die rohrförmige Extrudersehnecke (4) im Bereich der Fütterzone mit radialen Ausnehmungen (6) versehen ist.5. screw extruder according to claim 1, characterized in that that the tubular extruder chord (4) in the area the feeding zone is provided with radial recesses (6). Βϋ 9 8 8 5 / 1 0 3 0 Βϋ 9 8 8 5/1 0 3 0 LeerseiteBlank page
DE2415585A 1974-03-30 1974-03-30 SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE Pending DE2415585A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2415585A DE2415585A1 (en) 1974-03-30 1974-03-30 SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE
IT21626/75A IT1034517B (en) 1974-03-30 1975-03-24 SCREW EXTRUDER WITH AN EXTRUDER SCREW MADE AS A PIPE
NL7503494A NL7503494A (en) 1974-03-30 1975-03-24 SCREW EXTRUDER WITH A TUBE-LIKE SCREW FEEDER.
FR7509883A FR2265520A1 (en) 1974-03-30 1975-03-28 Screw extruder - for tubular products, using a tubular extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2415585A DE2415585A1 (en) 1974-03-30 1974-03-30 SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE

Publications (1)

Publication Number Publication Date
DE2415585A1 true DE2415585A1 (en) 1976-01-29

Family

ID=5911745

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2415585A Pending DE2415585A1 (en) 1974-03-30 1974-03-30 SCREW EXTRUDER WITH AN EXTRUDER SCREW DESIGNED AS A TUBE

Country Status (4)

Country Link
DE (1) DE2415585A1 (en)
FR (1) FR2265520A1 (en)
IT (1) IT1034517B (en)
NL (1) NL7503494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6551534B1 (en) 1996-04-17 2003-04-22 Uponor Innovation Ab Method and arrangement for cooling an extruded hollow product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486735A1 (en) * 1990-11-20 1992-05-27 Hoover Universal,Inc. Die head for plastic with barrier forming material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6551534B1 (en) 1996-04-17 2003-04-22 Uponor Innovation Ab Method and arrangement for cooling an extruded hollow product

Also Published As

Publication number Publication date
IT1034517B (en) 1979-10-10
FR2265520B3 (en) 1977-12-09
FR2265520A1 (en) 1975-10-24
NL7503494A (en) 1975-10-02

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