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DE1504801A1 - Blown film line - Google Patents

Blown film line

Info

Publication number
DE1504801A1
DE1504801A1 DE19651504801 DE1504801A DE1504801A1 DE 1504801 A1 DE1504801 A1 DE 1504801A1 DE 19651504801 DE19651504801 DE 19651504801 DE 1504801 A DE1504801 A DE 1504801A DE 1504801 A1 DE1504801 A1 DE 1504801A1
Authority
DE
Germany
Prior art keywords
tube
blown film
bore
mandrel
hose
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
DE19651504801
Other languages
German (de)
Inventor
Werner Dreser
Josef Klein
Friedrich Reifenhaeuser
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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 Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Publication of DE1504801A1 publication Critical patent/DE1504801A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Landscapes

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

Description

Betrifft : Folienblasanlage (Zusatz zu Patentanmeldung R 39 364 X/39a3) Die Erfindung betrifft eine weitere Verbesserung und Ausgestaltung einer Folienblasanlage, bei welcher in dem aus der Ringdüse eines Extruders austretenden und anschließend durch Blasluft aufgeweiteten Schlauch ein an dessen Innenwand mit Reibung anliegender, von einem Kühlmittel durchströmter zylindrischer Körper in Form eines Kalibrierdornes angeordnet ist, der mit einem durch den Spritzkopf hindurchgefhrten, die Ktihlwasserzu- und -ableitung aufnehmenden drehbaren Rohr in fester Verbindung steht, welches Rohr durch einen Getriebemotor in drehende Bewegung versetzt wird, nach Patentanmeldung R 39 364 X/39a3.Subject: Blown film system (addendum to patent application R 39 364 X / 39a3) The invention relates to a further improvement and configuration of a blown film system, in which exiting from the ring nozzle of an extruder and then a hose widened by blown air a hose that rests against its inner wall with friction, A cylindrical body in the form of a calibration mandrel through which a coolant flows is arranged, which with a passed through the spray head, the cooling water supply and discharge receiving rotatable tube is in a fixed connection, which tube is set in rotating motion by a gear motor, according to patent application R 39 364 X / 39a3.

Bei der Anordnung nach dem Hauptpatent ist für den im Inneren des Folienschlauches liegenden Kalibrierdorn, der über das durch den Spritzkopf hindurchgeführte Rohr mit einem Kühlmedium beaufschlagt wird, lediglich eine drehende Bewegung vorgesehen, durch welche der wit Reibung anliegende Foliensclilauch ebenfalls in Drehbewegung versetzt wird. Die Übertragung der Drehbewegung auf das erfolgt ueber ein auf diesem befestigtes Zahnrad, das über eine Kette mit dem Antriebsritzel eines Getriebemotors in Verbindung steht. Es ist aber in vielen Fällen erwttnscht, die Lage des Kalibrierdornes relativ zu dem Folienschlauch zu verändern, sei es, daß eine feste Einstellung vor Beginn des Betriebes oder auch eine Veränderung der Lage während des Betriebes der Anlage erfolgen soll. The arrangement according to the main patent is for the inside of the Foil hose lying calibration mandrel, which is passed through the extrusion head A cooling medium is applied to the pipe, only a rotating movement is provided, by means of which the film clips, which are in contact with the friction, also rotate is moved. The transfer of the rotary movement to the takes place via a on this attached gear that has a Chain with the drive pinion a gear motor is in connection. But in many cases it is desirable to change the position of the calibration mandrel relative to the film tube, be it that a fixed setting before the start of operation or a change in the Should take place during the operation of the system.

Gemäß der Erfindung wird daher vorgescnlagen, das den Kalibrierdorn haltende und sich mit diesem drehende Rohr in seiner relativen Höhenlage zu dem zu einer Folie aufgeblasenen Schlauch in axialer Richtung verstellbar anzuordnen. Diese Verstellbarkeit erfolgt gemäß der Erfindung in der Weise, daß das Rohr in der Bohrung des Antriebszahnrades längs verschiebbar und in dieser Bohrung ein Keil angeordnet ist, der in eine sich ueber die erforderliche Hublänge des Dornes erstreckende Keilnute des Rohres eingreift. Auf diese Weise wird das Rohr von dem Zahnrad bei des sen Drehung mitgenommen. Es kann aber gleichzeitig auch innerhalb der Längsnute gehoben und gesenkt werden. Die Höhenverstellung des Rohres kann in an sich bekannter Weise von Hand durch eine Zahnstange oder auch auf hydraulischem Wege erfolgen, zu welchem Zweck an dem Spritzkopf ein hydraulikzylinder angeordnet ist, dessen Kolbenstange uber einen das Rohr umfassenden Gleitbugel an dem zu verstellenden Rohr angreift.According to the invention, it is therefore proposed that the calibration mandrel holding and rotating with this pipe in its relative altitude to the to be arranged to be adjustable to a film inflated tube in the axial direction. This adjustability is carried out according to the invention in such a way that the tube in the bore of the drive gear and a wedge in this bore is arranged, which extends over the required stroke length of the mandrel in a Keyway of the pipe engages. In this way the pipe is attached to the gear its rotation taken along. But it can at the same time also within the longitudinal groove be raised and lowered. The height adjustment of the tube can be known per se By hand using a rack or hydraulically, for what purpose a hydraulic cylinder is arranged on the spray head, its The piston rod is attached to the one to be adjusted via a sliding bracket encompassing the tube Attacking pipe.

In der Zeichnung ist ein Ausfuhrungsbeiapiel gemäß der erfindung veranschaulicht und zwar zeigen: Fig. 1 einen Vertikalschnitt durch die Folienblasanlage und Fig. 2 einen Querschnitt nach der Linie II-II der Fig. 1.In the drawing, an exemplary embodiment is illustrated according to the invention namely show: Fig. 1 is a vertical section through the blown film system and FIG. 2 shows a cross section along the line II-II in FIG. 1.

Der an den Extruder 1 angeschraubte vertikale Spritzkopf besteht aus dem Düsenmantel 2 und dem Düsenkern 3, zwischen welchen der Massekanal 4 fAr die auszuspritzende Kunststoffmasse verläuft.The vertical spray head screwed to the extruder 1 consists of the nozzle jacket 2 and the nozzle core 3, between which the mass channel 4 for the The plastic mass to be injected runs.

Die Masse tritt aus dem ringförmigen Schlitz 5 als Schlauch 6 aus, wobei durch die über die Leitung 8 und Bohrung 7 im Spritzkopf eingeführte Bttltzluft der Schlauch auf den Außendurchmesser des Kalibrierdornes 29 aufgeweitet wird. Dieeer Kalibrierdorn ist ein Hohldorn, der an einem in einer enteprechenden Bohrung des Spritzkopfes drehbar gelagerten Rohr 9 befeetigt ist. Dieses Rohr trägt ein Zahnrad 11, das über eine Kette 12 von dem Ritzel 13 des Getriebemotors 14 in langsame Drehung versetzt wird. Entsprechend dreht auch der Kalibrierdorn 29 die über seine Mantelfläche gleitende Folie während des Abzuges, so daß diese Folie eine schraubenlinienförmige Bewegung ausführt. Damit das Rohr mit dem daran befestigten Kalibrierdorn auch in axialer Richtung verstellt werden kann, erfolgt die kraftschlüssige Verbindung zwiachen dem Rohr 9 und dem Zahnrad 11 durch einen in der Bohrung des Zahnrad es eingebrachten Keil 30, der in einer in dem Rohr angebrchten Längsnute 31 gleitet. Im Bereich dieser Nute kann das in der Zallradbohrung gleitend geführte Rohr in axialer Richtung unathängig von der gleichzeitigen Drehung des Rohres bewegt werden. Diese Bewegung wird durch den hydraulischen Zylinder 32 gesteuert, dessen Kolbenstange 33 über einen Bugel 34 mit einem das Rohr mit Gleitsitz umfassenden und gleichzeitig durch Anlage gegen den Armaturenkopf 23 abstützenden Ring 35 in starrer Verbindung steht. Anstatt des hydraulischen Antriebes zur Verstellung des Rohres 9 kann auch eine von Hand betriebene Zahnstange mit Selbstsperrung o. dgl. vorgesehen sein, an welcher der Bügel 34 befestigt ist.The mass emerges from the annular slot 5 as a tube 6, whereby through the Bttltzluft introduced via the line 8 and hole 7 in the spray head the hose is widened to the outer diameter of the calibration mandrel 29. Dieeer Calibration mandrel is a hollow mandrel that is attached to a corresponding hole in the Spray head rotatably mounted pipe 9 is attached. This tube carries a gear 11, which via a chain 12 from the pinion 13 of the gear motor 14 in slow rotation is moved. The calibration mandrel 29 also rotates accordingly over its lateral surface sliding film during the withdrawal, so that this film has a helical shape Movement. So that the pipe with the calibration mandrel attached to it can also be in can be adjusted in the axial direction, the force-fit connection occurs between the tube 9 and the gear 11 through one in the bore of the gear it is introduced Wedge 30 which slides in a longitudinal groove 31 made in the tube. In the area of this The tube, which is slidably guided in the gear wheel bore, can groove independently in the axial direction moved by the simultaneous rotation of the pipe. This movement is going through the hydraulic cylinder 32 controlled, the piston rod 33 Via a bracket 34 with a tube encompassing the sliding fit and at the same time by bearing against the fitting head 23 supporting ring 35 in a rigid connection stands. Instead of the hydraulic drive for adjusting the pipe 9 can also a hand-operated self-locking rack or the like can be provided, to which the bracket 34 is attached.

Claims (2)

P a t e n t a n s p r ü c h e 9 Folienblasanlage, bei welcher in dem aus der Ringdüse eines Extruders austretenden und anschließend durch Blasluft aufgeweiteten Schlauch ein an dessen Innenwand mit Reibung anliegender, von einem Kühlmittel durchströmter zylindrischer Körper in Form eines Kalibrierdornes angeordnet iet, der mit einem durch den Spritzkopf hindurchgeführten, die Kuhlwasserzu- und -ableitung aufnehmenden drehbaren rohr in fester Verbindung steh, nach Patentanmeldung R 39 364 x/39a3, dadurch gekennzeichnet, daß der Kalibrierdorn (29) in seiner relativen Höhenlage zu dem zu einer Folie (6) aufgeblasenen Schlauch in axialer Richtung verstellbar ist. P a t e n t a n s p r ü c h e 9 Blown film system, in which in the one emerging from the ring nozzle of an extruder and then blown air widened hose a rubbing against its inner wall with friction, from a Cylindrical body through which coolant flows are arranged in the form of a calibration mandrel iet, which with a passed through the spray head, the Kuhlwasserzu- and -Discharge receiving rotatable tube in a fixed connection, according to patent application R 39 364 x / 39a3, characterized in that the calibration mandrel (29) in its relative Height of the hose inflated to form a film (6) adjustable in the axial direction is. 2. Folienblasanlage nach Anspruch 1, dadurch gekennzeichnet, daß das drehbare Rohr (9) in der Bohrung des Antriebszahnrades (11) längs verachiebbar und in dieser Bohrung ein Keil (30) angeordnet ist, der in einer sich über die erforderliche Hublänge des Dornes eretreckendenLängsnute (31) des Rohres gleitend geführt ist. L e e r s e i t e2. Blown film system according to claim 1, characterized in that the rotatable tube (9) in the bore of the drive gear (11) and displaceable longitudinally in this bore a wedge (30) is arranged, which is in a required Stroke length of the mandrel extending longitudinal groove (31) of the tube is slidably guided. L. e e r e i t e
DE19651504801 1965-08-04 1965-08-04 Blown film line Pending DE1504801A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0041237 1965-08-04

Publications (1)

Publication Number Publication Date
DE1504801A1 true DE1504801A1 (en) 1969-11-06

Family

ID=7406299

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651504801 Pending DE1504801A1 (en) 1965-08-04 1965-08-04 Blown film line

Country Status (1)

Country Link
DE (1) DE1504801A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20117403U1 (en) 2001-10-24 2002-05-16 Sms-Folientechnik Gmbh & Co. Kg, Wien cooling mandrel
DE102005006474A1 (en) * 2005-02-12 2006-08-17 Kiefel Extrusion Gmbh Blown tubular plastic production involves extruded tubular film passing expandable bellows which is internally cooled and held at pressure above atmospheric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20117403U1 (en) 2001-10-24 2002-05-16 Sms-Folientechnik Gmbh & Co. Kg, Wien cooling mandrel
DE102005006474A1 (en) * 2005-02-12 2006-08-17 Kiefel Extrusion Gmbh Blown tubular plastic production involves extruded tubular film passing expandable bellows which is internally cooled and held at pressure above atmospheric

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