DE1729374A1 - Method and device for the production of coiled extruded profiles from plastic - Google Patents

Method and device for the production of coiled extruded profiles from plastic

Info

Publication number
DE1729374A1
DE1729374A1 DE19671729374 DE1729374A DE1729374A1 DE 1729374 A1 DE1729374 A1 DE 1729374A1 DE 19671729374 DE19671729374 DE 19671729374 DE 1729374 A DE1729374 A DE 1729374A DE 1729374 A1 DE1729374 A1 DE 1729374A1
Authority
DE
Germany
Prior art keywords
nozzle
speed
coiled
plastic
spray head
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
DE19671729374
Other languages
German (de)
Inventor
Eberhard Dipl-Chem Hinz
Willi Langsdorf
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.)
Ver Deutsche Metallwerke AG
Original Assignee
Ver Deutsche Metallwerke 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 Ver Deutsche Metallwerke AG filed Critical Ver Deutsche Metallwerke AG
Publication of DE1729374A1 publication Critical patent/DE1729374A1/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/14—Twisting
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/131—Curved 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
    • B29C48/301—Extrusion nozzles or dies having reciprocating, oscillating or rotating 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
    • B29C48/03—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
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/18—Heat-exchangers or parts thereof

Landscapes

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

Description

Verfahren und Vorrichtung zur Herstellung von gewendelten Strangpre#profilen aus Kunststoff Die Erfindung bezieht sich auf. ein Verfahren und eine Vorrichtung zur Herstellung von gewendelten Strangpreßprofilen aus Kunststoff, vorzugsweise aus thermoplastischen Kunststoffen. Process and device for the production of coiled extruded profiles made of plastic The invention relates to. a method and apparatus for the production of coiled extruded profiles made of plastic, preferably made of thermoplastics.

Älmlich dem Strangpressen von Metallen ist es auch auf dem Gebiet der Kunststoffverarbeitung bekannt, Längsprofile mit Hilfe von Matrizen zu pressen bzvO herzustellen. Auch die Kabelindustrie bedient sich dieses Verfahrens zur Ummantelung von Kabeln. Auf bestimmten Gebieten der Technik werden nun Kunststoffprofile benotigt, die in Längsrichtung mit einem Drall versehen sind. Derartige Profile werden beispielsweise für Wärmetauscher Verwendet, um einen Zwangsumlauf des kühlmediums herbeizuführen. Kunststoffe haben in diesem Zusamenhang den besonderen Vorteil, daß sie korrosionsfest sind. Bisher wurden gewendelte Kunststoffprofile zumeist in mehreren Arbeitzgangen hergestellt. Sie wurden linear aus der Matrize herausgezogen und anschlie#end gegebenfalls unter Zuhilfenahme von Wärme gewendelt. Dieses Vorgehen ist aufwendig, zeitraubend und dami-t unwirtschaftlich. Weiterhin ist es nach der deutschen Patentschrift 1. 018. 219 bekannt, hinter dem Auslaß eines Spritzgußzylinders für thermoplastische Hassen ein Vorsatzstück anzubringen, dessen innerer Längahohlraum in Form einer Schraubenwindung angeordnet ist. Auch auf diese Weise können gewendelte Strangpreßprofile hergestellt werden. Dieses bekannte Vorgehen ist jedoch unwirtschaftlich, da das Herstellen des Vorsatzstückes mit sehr hohen Kosten verbunden ist.Similar to the extrusion of metals, it is also in the field known in plastics processing to press longitudinal profiles with the aid of dies bzvO to produce. The cable industry also uses this method for sheathing of cables. In certain areas of technology, plastic profiles are now required, which are provided with a twist in the longitudinal direction. Such profiles are for example for heat exchangers used to create a forced circulation of the cooling medium. In this context, plastics have the particular advantage that they are corrosion-resistant are. So far, coiled plastic profiles have mostly been done in several steps manufactured. They were pulled linearly out of the die and then if necessary coiled with the aid of heat. This procedure is complex and time-consuming and therefore uneconomical. Furthermore it is according to the German patent specification 1. 018.219 known, behind the outlet of an injection molding cylinder for thermoplastic hates attaching an attachment to its inner longitudinal cavity is arranged in the form of a screw turn. You can also use coiled ones in this way Extruded profiles are produced. However, this known procedure is uneconomical, since the production of the attachment is associated with very high costs.

Die Erfindung hat sich daher die Aufgabe gestellt, gewendelte Profile aus Kunststoff in einem Arbeitsgang direk-t bei der Profilherstellung in einfacherer Weise zu erzeugen.The invention has therefore set itself the task of producing coiled profiles made of plastic in one work step directly in the profile production in a simpler way Way to generate.

Diese Aufgabe ist dadurch gelost, daß die Düse des Spritzkopfes während des Strangpressens um ihre Mittelachse gedreht wird. Auf diese Weise tritt der gespritzte Strang in gewendeiter Form aus dem Spritzkopf aus, wenn er an seinem Austrittsende am Drehen gehindert wird. Es ist dabei lediglich erforderlich, die Duse des Spritzkopfes drehbar auszugestalten, was mit relativ einfachen Mitteln erreichbar ist. Sie kann durch ein Kettenrad oder durch ein Zahnrad angetrieben werden. Min Riementrieb ist ebenfalls möglich, jedoch werden die beiden zuerst genannten Antriebsarten wegen der relativ hohen Betriebstemperaturen bevorzugt. Die Antriebsräher sind bevorzugt:.uf der Ausgangsseite zu montieren. Das Drehmoment kann mittels einer Feder auf die Düse übertragen werden. Da es sich weiterhin hierbei mur um eine einmalige mit relativ niedrigen Kosten verbundene Anschaffung handelt, fallen Dauerkosten bei der Anwendung des erfindungsgemä#en Verfahrens völlig au#er Betracht.This task is achieved in that the nozzle of the spray head during of extrusion is rotated about its central axis. In this way, the injected occurs Strand in a twisted form from the extrusion head when it is at its outlet end is prevented from turning. All that is required is the nozzle of the spray head design rotatable, which can be achieved with relatively simple means. she can driven by a chain wheel or by a gear wheel. Min belt drive is also possible, but the first two types of drive are due to the relatively high operating temperatures preferred. The driving crows are preferred: .uf on the output side. The torque can be applied to the by means of a spring Nozzle are transferred. Since this is still a one-time with relative low cost acquisition, there are ongoing costs associated with the application of the method according to the invention completely out of consideration.

# Im Rahmen des erfindungsgemäßen Verfahrens ist es von besonderem Vorteil, den gewendelten strang mit Hilfe von drei gesondert ungetriebenen Bandraupen abzuziehen, die parallel zueinander und im Querschnitt gleichmä#ig um aus abzuziehende Profil verteilt ungeordnet sind. Auch hierbei vzird das gewendlte Strangpreßprofil am Drehen um seine Längsachse gehindert. # It is of particular importance in the context of the method according to the invention Advantage, the coiled strand with the help of three separate, non-driven belt caterpillars to be deducted, which are parallel to each other and in cross-section evenly in order to be deducted from Profile are distributed disordered. Here, too, the coiled extruded profile is vzird prevented from rotating about its longitudinal axis.

Im Ralimen des erfindungsgemäßen Verfahrens gelingt es visiterhil in einfacher Weise, eine bestimmte Steigung der Vendel des Profilstranges einzustellen. Einmal ist es möglich, durch die Steuerung der beim Strangpressen üblichen Abziehvorrichtungen, mit denen die Abziehgeschwindigkeit geregelt wird, die Steigung der Wendel durch Einhalten einer konstanten Drehzahl der Spritzdüse zu regelez Umgekehrt kaon die Abziehgeschwindigkeit konstant gehalten und die Drehzahl der Spritzdüse variiert werden, um die Steigung der Wendel auf einen gewünschten Wert einzustellen.In the context of the method according to the invention, it is visiterhilic in a simple way to set a certain slope of the Vendel of the profile strand. On the one hand it is possible, through the control of the pulling devices common in extrusion, with which the withdrawal speed is regulated, the pitch of the helix Maintaining a constant speed of the spray nozzle to regulate the reverse kaon Withdrawal speed kept constant and the speed of the spray nozzle varied to set the pitch of the helix to a desired value.

Zur DurcI des erfindungsgemä#en Verfahrens dient eine Vorrichtung, deren Düse am Spritzkopf um ihre Mittelachse drehbar gelagert ist. Von Vorteil ist es, wenn an dem Befestigungsring der Düse ein Zahnrad vorgesehen ist, so daB die Oiise liber ein Vorgelege angetrieben bzw. in Drehung gehalten werden kann.A device is used to carry out the method according to the invention, whose nozzle is rotatably mounted on the spray head about its central axis. Is beneficial it, if a gear is provided on the fastening ring of the nozzle, so that the Oiise can be driven or kept rotating via a countershaft.

Die Erfindung ist anhand von Abbildungen zeichnerisch erläutert. @ert. Die Abbildung 1 zeigt den Längsschnitt durch eine Yorrichtung nach der Erfindung zur Durchführung des erfindungsgemä#en Verfahrens. Die Abbildung 2 zeigt eine Draufsicht auf die Düsenöffnung.The invention is illustrated graphically with reference to figures. @ert. Figure 1 shows the longitudinal section through a Yorrichtung according to the invention for carrying out the method according to the invention. Figure 2 shows a top view on the nozzle opening.

Zur Durchführung des erfindungsgemä#en Verfahrens ist es erforderlich, an einem an sich bekannten Spritzkopf 1 die Düse 2 um ihre Mittelachse drehbar zu gestalten. Gemäß der Abbildung 1 ist die Düse mit Hilfe eines Befestigungsringes 3 drehbar im Spritzkopf 1 gelagert. Der Befestigungsring 3 zist mit Schrauben 4 an dem Spritzkopf 1 befestigte Die Düse 2 ist in Rahmen der Erfindung mit einem Kettenrad 6 verbundai so daß sie auf diese Ueise angetrieben bzw. in Drehung versetzt werden kann. Die Nuten 5 dienen zur Abdichtung des Spritzkopfes.To carry out the method according to the invention, it is necessary on a known spray head 1, the nozzle 2 is rotatable about its central axis design. According to the figure 1, the nozzle is with the help of a fastening ring 3 rotatably mounted in the spray head 1. The fastening ring 3 is fitted with screws 4 attached to the spray head 1, the nozzle 2 is within the scope of the invention with a Chain wheel 6 verbundai so that it is driven in this way or set in rotation can be. The grooves 5 serve to seal the spray head.

Der Keil 7 verhindert eine Relativdrehung z-rischen Diise wid Z almrad O In der Abbildung 2 ist eine Draufsicht auf eine Düse mit einem einfachen Flachquerschnitt 8 gezeigt, die zur Herstellung von einfachen Profilbändern dient, die gemä# der Abbildung 1 im gleichen Arbeitsgang ihrer Herstellung durch Drehen der Düse 2 in Wendeln 9 verwandelt werden. Abschließend sei betont, daß der Düsenquerschnitt 8 nicht an ein bestimmtes Profil gebunden ist. Hier kann jedes beliebige Profil zur Anwendung kommen.The wedge 7 prevents a relative rotation of the Z-rischen Diise wid Z almrad In Figure 2 is a plan view of a nozzle with a simple flat cross-section 8 shown, which is used for the production of simple profile strips that according to Figure 1 in the same operation of their manufacture by turning the nozzle 2 in Spirals 9 are transformed. Finally, it should be emphasized that the nozzle cross section 8 is not tied to a specific profile. Any profile can be used here Application.

Claims (6)

Patentansprüche 1. Verfahren zur Herstellung von gewendelten Strangpreßprofilen aus Kunststoff, dadurch gekennseiohnet, daß die Düse des Spritzkopfes während des Strangpressens um ihre Mittelachse gedreht und das ausgetretene Strangpreßprofil am Drehen um seine Längsachse gehindert wird. Claims 1. A method for producing coiled extruded profiles made of plastic, characterized in that the nozzle of the spray head during the Extrusion rotated around its central axis and the extrusion that has emerged is prevented from rotating about its longitudinal axis. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, da# da, aus der Düse austretende gewendelte Strangpre#profil mit Hilfe von drei gesondert angetriebenen Bandraupen abgezogen wird, die parallel zueinander und im Querschnitt gleichmä#ig um das abzuziehende Profil verteilt angeordnet sind.2. The method according to claim 1, characterized in that # da, off coiled extruded profile emerging from the nozzle with the help of three separately driven Tape caterpillars are pulled off that are parallel to each other and uniform in cross-section are arranged distributed around the profile to be withdrawn. 3. Zerfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß zur Binstellung der Stel gung der Wendel des S die Abziehgesohwindigkeit des Stranges konstant gehalten und die Drehzahl der Spritzdüse variiert wird.3. Zerfahren according to claims 1 and 2, characterized in that that to Binstellung the Stel supply of the helix of the S, the Abziehgesoh Speed of the Strand is kept constant and the speed of the spray nozzle is varied. 4. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß zur Linstellung der Steigung der Uendel des Strangpre#profils die Drehzahl der Spritzdtise konstant gehalterl und die Abziehgeschwindigkeit des Stranges variiert wirdo 4. The method according to claims 1 and 2, characterized in that that for Linstellung the slope of the Uendel of the extruded profile, the speed of the Spritzdtise kept constant and the pulling speed of the strand varied willo 5. Vorrichtung zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, da# die Düse (2) des Spritzkopfes (1) drehbar gelagert ist.** 5. Device for performing the method according to claims 1 to 4, characterized in that # the nozzle (2) of the spray head (1) is rotatably mounted. ** 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Befestigungsring (3) der Düse (2) mit einem Zahnrad (6) verbunden ist, so daß die e Düse (2) mit einem Vorgelege in Drehung versetzt werden kann.6. Apparatus according to claim 5, characterized in that the fastening ring (3) the nozzle (2) is connected to a gear (6) so that the e nozzle (2) with an intermediate gear can be set in rotation.
DE19671729374 1967-01-25 1967-01-25 Method and device for the production of coiled extruded profiles from plastic Pending DE1729374A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0032842 1967-01-25

Publications (1)

Publication Number Publication Date
DE1729374A1 true DE1729374A1 (en) 1971-04-08

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DE19671729374 Pending DE1729374A1 (en) 1967-01-25 1967-01-25 Method and device for the production of coiled extruded profiles from plastic

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494626A1 (en) * 1980-11-21 1982-05-28 Mihama Mfg PROCESS AND APPARATUS FOR MANUFACTURING SYNTHETIC RESIN TURBULENCE ELEMENTS
WO1985001691A1 (en) * 1983-10-21 1985-04-25 P.V. Trim Limited Improvements to heat exchangers
DE3442712A1 (en) * 1984-11-23 1986-05-28 Naturin-Werk Becker & Co, 6940 Weinheim ARTIFICIAL, IRREGULARLY SHAPED SAUSAGE CASE FROM COLLAGEN, METHOD FOR THEIR PRODUCTION AND DEVICE FOR IMPLEMENTING THE METHOD
US20080257476A1 (en) * 2004-09-30 2008-10-23 Giovanni Pozzati Method and Apparatus for Manufacturing Pneumatic Tyres
CN104552867A (en) * 2015-01-15 2015-04-29 福建鸿博光电科技有限公司 Profile extrusion assembly and extrusion equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494626A1 (en) * 1980-11-21 1982-05-28 Mihama Mfg PROCESS AND APPARATUS FOR MANUFACTURING SYNTHETIC RESIN TURBULENCE ELEMENTS
DE3145887A1 (en) * 1980-11-21 1982-06-24 Kato Hatsujo Kaisha, Ltd., Yokohama, Kanagawa METHOD AND DEVICE FOR PRODUCING TURBULENCE-GENERATING PARTS FROM RESIN
WO1985001691A1 (en) * 1983-10-21 1985-04-25 P.V. Trim Limited Improvements to heat exchangers
DE3442712A1 (en) * 1984-11-23 1986-05-28 Naturin-Werk Becker & Co, 6940 Weinheim ARTIFICIAL, IRREGULARLY SHAPED SAUSAGE CASE FROM COLLAGEN, METHOD FOR THEIR PRODUCTION AND DEVICE FOR IMPLEMENTING THE METHOD
US20080257476A1 (en) * 2004-09-30 2008-10-23 Giovanni Pozzati Method and Apparatus for Manufacturing Pneumatic Tyres
CN104552867A (en) * 2015-01-15 2015-04-29 福建鸿博光电科技有限公司 Profile extrusion assembly and extrusion equipment
CN104552867B (en) * 2015-01-15 2017-06-23 福建鸿博光电科技有限公司 The extrusion component and extrusion equipment of section bar

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