DE1161412B - Adjustable ring nozzle - Google Patents

Adjustable ring nozzle

Info

Publication number
DE1161412B
DE1161412B DEK40844A DEK0040844A DE1161412B DE 1161412 B DE1161412 B DE 1161412B DE K40844 A DEK40844 A DE K40844A DE K0040844 A DEK0040844 A DE K0040844A DE 1161412 B DE1161412 B DE 1161412B
Authority
DE
Germany
Prior art keywords
nozzle
ring
mandrel
bushing
socket
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
DEK40844A
Other languages
German (de)
Inventor
Hans Necas-Niessner
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Priority to DEK40844A priority Critical patent/DE1161412B/en
Publication of DE1161412B publication Critical patent/DE1161412B/en
Pending legal-status Critical Current

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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
    • 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
    • B29C48/03—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
    • 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
    • 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
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections

Description

Einstellbare Ringdüse Zur Herstellung von Rohren und Schläuchen durch Auspressen von geschmolzenen thermoplastischen Kunststoffen benutzt man Ringdüsen, die zwischen einem Düsendorn und einem Düsengehäuse einen Durchgang von ringförmigem Querschnitt bilden, durch welchen die geschmolzene thermoplastische Kunststoffmasse gepreßt und dabei zum Schlauch verformt wird. Da es schwierig ist, Düsendorn und Düsengehäuse von vornherein hinreichend genau konzentrisch zueinander zusammenzubringen, hat man den letzten Teil des Düsendorns bis zur Düsenmündung mit einem Ringkörper, auch Buchse genannt, umgeben, der an dem Düsengehäuse befestigt ist, jedoch in seiner Lage gegenüber der Längsachse des Düsendorns mit Hilfe einstellbarer Druck- und Zugelemente, z. B. von Stellschrauben, eingerichtet werden kann. Dadurch ist man in der Lage, eine etwa vorhandene Exzentrizität der Buchse gegenüber dem Düsendorn auszugleichen. Um die durch die Ringdüse gepreßte Kunststoffmasse nicht an den hervorspringenden bzw. zurücktretenden Stoßkanten vorbeiführen zu müssen, welche Buchse und Düsendorn bei Verstellbarkeit miteinander bilden können, hat man ferner vorgeschlagen, Buchse und Düsengehäuse durch ein elastisches Ringfutter zu verbinden, so daß dieses eine stoßkantenfreie äußere Begrenzung des ringförmigen Düsendurchgangs bildet. Ein Nachteil der bisher bekannten einstellbaren Ringdüsen besteht darin, daß bei ihnen Düsendorn und Düsenbuchse gegeneinander nur als Ganzes verstellt werden können. In der Praxis treten aber bei den ausgepreßten Schläuchen vielfach auch solche Fehler auf, welche durch Verstellen von nur Teilen der Buchse gegenüber dem Dorn besser zu beheben wären als durch eine Verstellung der gesamten Buchse gegenüber dem Dorn.Adjustable ring nozzle For making pipes and hoses through Ring nozzles are used to press out molten thermoplastics, between a nozzle mandrel and a nozzle housing a passage of annular Form cross-section through which the melted thermoplastic plastic mass is pressed and thereby deformed into a tube. Since it is difficult to use the nozzle mandrel and Bring the nozzle housings together with sufficient accuracy concentrically to one another from the outset, you have the last part of the nozzle mandrel up to the nozzle mouth with an annular body, also called bushing, which is attached to the nozzle housing, but in its Position relative to the longitudinal axis of the nozzle mandrel with the help of adjustable pressure and Tension elements, e.g. B. of adjusting screws can be set up. That's how you are capable of any eccentricity of the bushing relative to the nozzle mandrel balance. In order to avoid the protruding plastic mass pressed through the ring nozzle or receding abutting edges to have to pass which bushing and nozzle mandrel can form with one another with adjustability, it has also been proposed to socket and to connect nozzle housings by an elastic ring liner, so that this one Forms butt-free outer boundary of the annular nozzle passage. A disadvantage the previously known adjustable ring nozzles is that they have a nozzle mandrel and nozzle bushing can only be adjusted as a whole. In practice however, errors often also occur in the squeezed out hoses, which better to fix by adjusting only parts of the bushing relative to the mandrel would be than by adjusting the entire bushing with respect to the mandrel.

Gegenstand der vorliegenden Erfindung ist eine Ringdüse mit gegen den Düsendorn durch DruckundSoder Zugelemente verstellbarer Buchse sowie einem Buchse und Düsengehäuse verbindenden elastischen Ringfutter, welche in der beschriebenen vorteilhafteren Weise verstellbar ist. Die Ringdüse gemäß der Erfindung ist dadurch gekennzeichnet, daß ihre Buchse mit radialen Aussparungen versehen ist und wenigstens ein Teil der zwischen den radialenAussparungen stehengebliebenen Speichen über die DruckoderZugelemente mit dem Düsengehäuse verbunden ist. The present invention is an annular nozzle with counter the nozzle mandrel by means of a bushing adjustable by pushing and pulling elements and a bushing and resilient ring liners connecting nozzle housings, which are disclosed in US Pat is adjustable in a more advantageous manner. The ring nozzle according to the invention is thereby characterized in that its socket is provided with radial recesses and at least part of the spokes left between the radial recesses over the Pressure or pulling elements are connected to the nozzle housing.

Ein Ausführungsbeispiel der Ringdüse gemäß der Erfindung ist in den A b b. 1 und 2 dargestellt. Von ihnen zeigt A b b. 1 eine Vorderansicht in einem entlang der Linie II-II der A b b. 2 geführten Schnitt und A b b. 2 eine Draufsicht auf die Düsenmündung in teilweiser Darstellung. An embodiment of the ring nozzle according to the invention is shown in FIGS A b b. 1 and 2 shown. Of them, A b b shows. 1 is a front view in one along the line II-II of A b b. 2 guided cut and A b b. 2 is a plan view on the nozzle mouth in partial representation.

Bei den Ringdüsen gemäß der Erfindung ist wie bei den bisher bekannten Ringdüsen ein Düsendorn 1 in einem Düsengehäuse 2 angeordnet, in dessen letztem, bis zur Düsenmündung 3 reichendem Teil eine den Dorn umgebende Buchse 12 eingelassen ist, deren konzentrische Lage zum Düsendorn mit Druck- oder Zugelementen, z. B. mit Stellschrauben 16, eingestellt werden kann. Um die bei der Verlagerung der Buchse 12 in der Aussparung des Gehäuses 2 auftretenden Stoßkanten 7 zu verkleiden, ist ein Ringfutter 8 aus hart elastischem Material, wie Stahl, eingebaut, z. B. ein Rohrstück aus VA-Material mit einer Wandstärke von etwa 1,5 mm, welches konisch aufgeweitet ist, um der Form des Düsendorns zu entsprechen. The ring nozzles according to the invention are the same as those previously known Ring nozzles a nozzle mandrel 1 arranged in a nozzle housing 2, in the last, A bush 12 surrounding the mandrel is inserted up to the part reaching the nozzle mouth 3 is, whose concentric position to the nozzle mandrel with pressure or tension elements, z. B. with adjusting screws 16, can be adjusted. To the case of relocating the socket 12 to disguise abutting edges 7 occurring in the recess of the housing 2 is a ring chuck 8 made of hard elastic material, such as steel, installed, for. B. a Pipe section made of VA material with a wall thickness of about 1.5 mm, which is conical is flared to match the shape of the nozzle mandrel.

Die in der Buchse 12 erfindungsgemäß vorhandenen radialen Aussparungen 13 gehen verhältnismäßig tief in die Buchse hinein, so daß sich zwischen den stehengebliebenen Speichen oder Segmenten 14 nur schmale Verbindungsstege 15 befinden. Die für das Einstellen der federnden Buchse 12 vorgesehenen Stellschrauben 16 wirken auf die Speichenl4 ein. The radial recesses present in the socket 12 according to the invention 13 go relatively deep into the socket, so that between the stopped Spokes or segments 14 are only narrow connecting webs 15. The one for that Adjusting the resilient bushing 12 provided adjusting screws 16 act on the Spoke 4 a.

Diese sind zu diesem Zweck beispielsweise ausgebohrt und nehmen das gewindelose Schaftende der Schraube 16 auf, die in das Düsengehäuse 2 eingeschraubt und mit ihrem Kopf 17 in eine im Düsengehäuse befindliche Aussparung eingelassen sind. Die Schrauben 16 sind weiterhin, beispielsweise am Schaft, mit einem Ringnut 18 versehen, in welchen ein Haltestift 19 so eingreift, daß er die Lage der Ringnut 18 zur Buchse 12 fixiert. Durch Rechts- bzw. Linksdrehen der Schraube kommt es dann zu einer Druck- bzw. Zugspannung zwischen Düsengehäuse 2 und dem betreffenden Buchsensegment 14. Die damit verbundene elastische Deformierung der federnden Buchse 12 überträgt sich auf das Ringfutter 8.These are drilled out for this purpose, for example, and take that threadless shaft end of the screw 16, which is screwed into the nozzle housing 2 and let its head 17 in a recess located in the nozzle housing are. The screws 16 are furthermore, for example on the shaft, with an annular groove 18 provided, in which a retaining pin 19 engages so that it determines the position of the annular groove 18 fixed to the socket 12. By turning the screw clockwise or counterclockwise, it happens to a compressive or tensile stress between the nozzle housing 2 and the relevant socket segment 14. The associated elastic deformation of the resilient bush 12 transmits on the ring lining 8.

Das nach dem Düseneingang hin gelegene Ende des Ringfutters 8 ist zwockmäßigerweise an einem Stützring 9 festgemacht, der seinerseits in eine entsprechende Ausnehmung des Düsengehäuses 2 eingesetzt und mit diesem beispielsweise durch Schrauben S fest verbunden ist. Die Befestigung zwischen Stützring 9 und Ringfutter 8 erfolgt beispielsweise durch Verschweißen. Das nach der Düsenmündung hin gelegene Ende des Ringfutters ist mit der Buchse 12 verbunden, beispielsweise ebenfalls durch Schweißen. The end of the ring chuck 8 located after the nozzle inlet is zwockweise fixed to a support ring 9, which in turn in a corresponding Recess of the nozzle housing 2 used and with this for example is firmly connected by screws S. The attachment between the support ring 9 and the ring chuck 8 takes place, for example, by welding. The one located towards the nozzle mouth The end of the ring lining is connected to the socket 12, for example also through Welding.

Diese Schweißstelle liegt vorzugsweise nahe oder direkt bei der Düsenmündung. Die Übergangsstelle 10 zwischen dem Ringfutter 8 und dem Düsengehäuse 2 ist geglättet, gegebenenfalls durch Schleifen und Polieren, das zweckmäßigerweise erfolgt, nachdem der Stützring 9 mit dem daran angeschweißten Ringfutter 8 sowie mit der mit ihm verschweißten Buchse 12 in die dafür vorgesehene Ausnehmung in der Wand des Düsengehäuses eingesetzt worden ist.This welding point is preferably close to or directly at the nozzle mouth. The transition point 10 between the ring liner 8 and the nozzle housing 2 is smoothed, possibly by grinding and polishing, which is expediently done after the support ring 9 with the ring chuck 8 welded to it and with the one with it welded socket 12 into the recess provided for this in the wall of the nozzle housing has been used.

Die Schweißstelle zwischen Buchse und Ringfutter ist ebenfalls in der erforderlichen Weise bearbeitet.The weld between the bushing and the ring chuck is also in processed in the required manner.

Zwischen der Buchse 12 und dem Stützring 9 befindet sich zweckmäßigerweise eine Gleitscheibe 11. There is expediently located between the bush 12 and the support ring 9 a sliding washer 11.

Der Hohlraum zwischen Stützring 9 und Ringfutter 8 soll schmal gehalten werden, damit ein guter Wärme- durchfluß vom Düsengehäuse zum Düseninnern gewährleistet bleibt. Gegebenenfalls kann dieser Hohlraum zur Verbesserung des Wärmeübergangs zwischen Ringfutter 8 und Stützring 9 ausgefüllt sein, z. B. mit einem Schmierfett.The cavity between the support ring 9 and the ring chuck 8 should be kept narrow so that a good warmth guaranteed flow from the nozzle housing to the nozzle interior remain. If necessary, this cavity can be used to improve the heat transfer be filled between ring chuck 8 and support ring 9, for. B. with a grease.

Claims (1)

Patentanspruch: Ringdüse mit gegen den Düsendorn durch Druck und;oder Zugelemente verstellbarer Buchse sowie einem Buchse und Düsengehäuse verbindendenRingfutter dadurch gekennzeichnet, daß die Buchse (12) mit radialen Aussparungen (13) versehen und wenigstens ein Teil der zwischen den Aussparungen (13) stehengebliebenen Speichen (14) über die Druck- oder Zugelemente (16) mit dem Düsengehäuse (2) verbunden ist. Claim: Ring nozzle with against the nozzle mandrel by pressure and; or Tension elements of adjustable bushing and a ring chuck connecting bushing and nozzle housing characterized in that the bush (12) is provided with radial recesses (13) and at least some of the spokes left between the recesses (13) (14) is connected to the nozzle housing (2) via the pressure or tension elements (16). In Betracht gezogene Druckschriften: Britische Patentschrift Nr. 759 079; französische Patentschrift Nr. 1 115 514; USA.-Patentschrift Nr. 1 197 326. Documents considered: British Patent No. 759 079; French Patent No. 1,115,514; U.S. Patent No. 1,197 326.
DEK40844A 1960-05-28 1960-05-28 Adjustable ring nozzle Pending DE1161412B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK40844A DE1161412B (en) 1960-05-28 1960-05-28 Adjustable ring nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK40844A DE1161412B (en) 1960-05-28 1960-05-28 Adjustable ring nozzle

Publications (1)

Publication Number Publication Date
DE1161412B true DE1161412B (en) 1964-01-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEK40844A Pending DE1161412B (en) 1960-05-28 1960-05-28 Adjustable ring nozzle

Country Status (1)

Country Link
DE (1) DE1161412B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2343577A1 (en) * 1976-03-13 1977-10-07 Elbatainer Kunststoff PROCESS AND DEVICE FOR THE MANUFACTURING OF HOLLOW BODIES FROM A THERMOPLASTIC MATERIAL
DE2654001A1 (en) * 1976-11-27 1978-06-08 Harald Feuerherm PROCESS FOR COMPARISON OF WALL THICKNESS OF HOLLOW BODIES FORMED FROM THERMOPLATIC PLASTIC AND DEVICE FOR CARRYING OUT THE PROCESS
DE2823999A1 (en) * 1977-11-21 1979-05-23 Harald Feuerherm Device for controlling wall thickness of extruded parisons - has elastic, radially-adjustable ring disposed upstream of extrusion orifice to modify stretching properties
FR2653702A1 (en) * 1989-10-26 1991-05-03 Reifenhaeuser Masch PROCESS FOR OPERATING A PLANT FOR THE EXTRUSION OF BLOWED SHEETS AND PLANT FOR THE EXTRUSION OF BLOWN SHEETS PROVIDED FOR IMPLEMENTING THE PROCESS.
WO2000004317A1 (en) 1998-07-14 2000-01-27 Heinz Gross Flow channel wall
EP1023984A2 (en) * 1999-01-27 2000-08-02 Feuerherm, Harald Extrusion head for extrusion blow moulding plastic containers
EP1652651A2 (en) 2004-10-29 2006-05-03 Battenfeld Extrusionstechnik GmbH Apparatus and method for guiding and forming an extruded plastic wire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1197326A (en) * 1914-10-05 1916-09-05 Okonite Co Apparatus for coating strips of tin or the like with rubber or other plastic material.
FR1115514A (en) * 1953-12-16 1956-04-25 Tno Extrusion head intended for an apparatus for the manufacture of plastic tubes or pipes
GB759079A (en) * 1953-12-11 1956-10-10 Firestone Tire & Rubber Co Improvements in or relating to extruders for making tubes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1197326A (en) * 1914-10-05 1916-09-05 Okonite Co Apparatus for coating strips of tin or the like with rubber or other plastic material.
GB759079A (en) * 1953-12-11 1956-10-10 Firestone Tire & Rubber Co Improvements in or relating to extruders for making tubes
FR1115514A (en) * 1953-12-16 1956-04-25 Tno Extrusion head intended for an apparatus for the manufacture of plastic tubes or pipes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2343577A1 (en) * 1976-03-13 1977-10-07 Elbatainer Kunststoff PROCESS AND DEVICE FOR THE MANUFACTURING OF HOLLOW BODIES FROM A THERMOPLASTIC MATERIAL
DE2654001A1 (en) * 1976-11-27 1978-06-08 Harald Feuerherm PROCESS FOR COMPARISON OF WALL THICKNESS OF HOLLOW BODIES FORMED FROM THERMOPLATIC PLASTIC AND DEVICE FOR CARRYING OUT THE PROCESS
DE2823999A1 (en) * 1977-11-21 1979-05-23 Harald Feuerherm Device for controlling wall thickness of extruded parisons - has elastic, radially-adjustable ring disposed upstream of extrusion orifice to modify stretching properties
FR2653702A1 (en) * 1989-10-26 1991-05-03 Reifenhaeuser Masch PROCESS FOR OPERATING A PLANT FOR THE EXTRUSION OF BLOWED SHEETS AND PLANT FOR THE EXTRUSION OF BLOWN SHEETS PROVIDED FOR IMPLEMENTING THE PROCESS.
WO2000004317A1 (en) 1998-07-14 2000-01-27 Heinz Gross Flow channel wall
DE19831540C2 (en) * 1998-07-14 2000-06-21 Heinz Gros Partial change in the flow channel cross section of a closed flow channel cross section
US6595484B1 (en) 1998-07-14 2003-07-22 Heinz Gross Wall structure having a deformable multi-walled area for varying a cross section of a flow channel
DE19831540C5 (en) * 1998-07-14 2005-07-07 Groß, Heinz, Dr.-Ing. Partial change of the flow channel cross section of a closed flow channel cross section
EP1023984A2 (en) * 1999-01-27 2000-08-02 Feuerherm, Harald Extrusion head for extrusion blow moulding plastic containers
EP1023984A3 (en) * 1999-01-27 2002-01-02 Feuerherm, Harald Extrusion head for extrusion blow moulding plastic containers
EP1652651A2 (en) 2004-10-29 2006-05-03 Battenfeld Extrusionstechnik GmbH Apparatus and method for guiding and forming an extruded plastic wire
DE102004052972B4 (en) * 2004-10-29 2010-10-28 Battenfeld Extrusionstechnik Gmbh Apparatus and method for guiding and forming an extruded plastic strand

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