DE3220837A1 - Device for calibrating tubes or profiles extruded from thermoplastics - Google Patents

Device for calibrating tubes or profiles extruded from thermoplastics

Info

Publication number
DE3220837A1
DE3220837A1 DE19823220837 DE3220837A DE3220837A1 DE 3220837 A1 DE3220837 A1 DE 3220837A1 DE 19823220837 DE19823220837 DE 19823220837 DE 3220837 A DE3220837 A DE 3220837A DE 3220837 A1 DE3220837 A1 DE 3220837A1
Authority
DE
Germany
Prior art keywords
valve
liquid
calibration
vacuum
calibration chamber
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.)
Granted
Application number
DE19823220837
Other languages
German (de)
Other versions
DE3220837C2 (en
Inventor
Albert 4972 Löhne Göbel
Uwe 4972 Löhne Heitkamp
Klaus 4970 Bad Oeynhausen Niemann
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.)
Battenfeld Extrusionstechnik GmbH
Original Assignee
Battenfeld Extrusionstechnik GmbH
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 Battenfeld Extrusionstechnik GmbH filed Critical Battenfeld Extrusionstechnik GmbH
Priority to DE3220837A priority Critical patent/DE3220837C2/en
Publication of DE3220837A1 publication Critical patent/DE3220837A1/en
Application granted granted Critical
Publication of DE3220837C2 publication Critical patent/DE3220837C2/en
Expired 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal 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
    • B29C48/901—Thermal 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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal 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
    • B29C48/904—Thermal 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 using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally

Landscapes

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

Abstract

In a device for calibrating tubes or profiles extruded from thermoplastics the extrudate is cooled in a closed calibration chamber, which is under vacuum, by means of a liquid which is sprayed onto said extrudate through nozzles and removed from the lower region of said calibration chamber by a circulating pump and collects there again after spraying. The liquid level forming in the calibration chamber can be raised and lowered in a controlled manner by a monitoring device, especially a float switch, the respective quantity of liquid needing to be removed to reduce the liquid level emerging behind the pressure connection of the circulating pump in a controlled manner by a valve which is in functional connection with said monitoring device. In order to achieve both a fast-reacting coarse adaptation as well as a fine adjustment of the vacuum in the calibration chamber, an air inlet valve, which is actuated in dependence on the valve for controlling the quantity of liquid to be removed, having allocated to it a throttle which can expediently be adjusted for adapting to the respective required operating state, and a vacuum valve effecting the fine adjustment, is mounted on said calibration chamber.

Description

Vorrichtung zum Kalibrieren von aus thermoplastischenDevice for calibrating from thermoplastic

Kunststoffen extrudierten Rohren oder Profilen Die Erfindung betrifft eine Vorrichtung zum Kalibrieren von aus thermoplastischen Kunststoffen extrudierten Rohren oder Profilen, bei der das Extrudat in einem geschlossenen, unter Vakuum stehenden Kalibrierraum mittels einer ihm durch Düsen aufgesprühten, von einer Umwalzpumpe dem unteren Bereich des Kalibrierraumes entnommenen und sich nach dem Versprühen wieder dort sammelnden Flüssigkeit gekühlt wird, deren Flüssigkeitsspiegel durch eine Überwachungseinrichtung, wie insbesondere einen Schwimmerschalter, gesteuert anhebbar und absenkbar ist, wobei die zum Absenken des Flüssigkeitsspiegels jeweils abzuführende Flüssigkeitsmenge hinter dem Druckstutzen der Umwalzpumpe durch ein mit der Überwachungseinrichtung in Wirkverbindung stehendes Ventil geregelt austritt.Plastics extruded pipes or profiles The invention relates to a device for calibrating extruded thermoplastics Tubes or profiles in which the extrudate is in a closed, under vacuum standing calibration room by means of a nozzle sprayed onto it by a circulation pump taken from the lower area of the calibration room and after spraying again there collecting liquid is cooled, its liquid level by a monitoring device, such as a float switch in particular, is controlled can be raised and lowered, each of which is used to lower the liquid level The amount of liquid to be discharged behind the pressure port of the circulation pump through a with the Monitoring device operatively connected valve regulated exit.

Eine Kalibriervorrichtung dieser Art geht aus der DE-OS 25 44 611 hervor. Dabei ist das in dieser Druckschrift wiedergegebene Gerät mit einem auf einen Sollwert einstellbaren Druckregelventil ausgestattet, das für ein gleichbleibendes Vakuum im Kalibrierraum sorgen soll.A calibration device of this type is disclosed in DE-OS 25 44 611 emerged. The device reproduced in this publication has an on equipped with a setpoint adjustable pressure control valve, which ensures a constant Vacuum in the calibration room.

Seine zwar genaue aber recht träge Arbeitsweise reicht jedoch nicht aus, um die infolge der vom Schwimmerschalter bewirkten schnell vor sich gehenden Veränderungen des Flüssigkeitsspiegels hervorgenifenen Vakuumschwankungen auszugleichen, weshalb die Aufgabe der Erfindung darin besteht, in Verbesserung der bekannten Vorrichtung deren Kalibrierraum mit einer Vakuum-Flinkregelung zu versehen.His precise but rather sluggish way of working is not enough off to the fast going on as a result of the float switch caused To compensate for changes in the liquid level caused by vacuum fluctuations, therefore the object of the invention is to improve the known device to provide their calibration room with a vacuum speed control.

Als Lösung der gestellten Aufgabe wird eine Kalibriervorrichtung der eingangs genannten Gattung vorgeschlagen, die sich in der Hauptsache dadurch kennzeichnet, daß dem Kalibrierraum ein in Abhängigkeit vom Ventil für die Regelung der abzuführenden Flüssigkeitsmenge betätigtes Iiufteinlaßventil mit einer ihm zugeordneten Drossel und einem die Peinregulierung übernehmenden Vakuumventil aufgesetzt ist. Außerdem ergibt es sich als zweckmäßig, wenn die dem Lufteinlaßventil zugeordnete Drossel eine ihre Anpassung an den jeweils gewünschten Betriebszustand ermöglichende Verstellbarkeit aufweist. Ferner kann noch das liufteinlaßventil und/oder das die abzuführende Flüs3igkeitsmenge regelnde Ventil über ein Zeitglied geschaltet werden.As a solution to the problem posed, a calibration device is the proposed at the beginning, which is mainly characterized by that the calibration room is a function of the valve for the regulation of the discharged Air inlet valve actuated by the amount of liquid with a throttle assigned to it and a vacuum valve that takes over the fine regulation is attached. aside from that it turns out to be expedient if the associated with the air inlet valve A throttle that enables it to be adapted to the respectively desired operating state Has adjustability. Furthermore, the liufteinlaßventil and / or the The valve regulating the amount of liquid to be discharged can be switched via a timer.

Die vorteilhafte Wirkungsweise des Anmeldungsgegenstandes ist darin zu sehen, daß sich auf Grund der Erfindungsmerkmale sowohl eine schnell reagierende Grobanpassung als auch eine Feinregulierung des im Kalibrierraum herrschenden Vakuums erreichen läßt, was die Maßhaltigkeit des Extrudats ganz entscheidend beeinflußt.The advantageous mode of action of the subject of the application is therein to see that due to the features of the invention, both a fast-reacting Rough adjustment as well as fine regulation of the vacuum prevailing in the calibration room can be achieved, which has a decisive influence on the dimensional accuracy of the extrudate.

Darüber hinaus werden nun die an den Wånden des Kalibriereinsatzes auftretenden Reibkräfte konstant gehalten, wovon wiederum die Funktionstüchtigkeit des gesamten Fertigungsvorganges abhängt.In addition, there are now those on the walls of the calibration insert occurring frictional forces kept constant, which in turn the functionality of the entire manufacturing process depends.

Ein Ausführungsbeispiel der Erfindung wird nachstehend an Hand der Zeichnung beschrieben.An embodiment of the invention is described below with reference to the Drawing described.

Die in der Zeichnung schematisch dargestellte Kalibriervorrichtung verfügt über einen zylindrischen Kalibrierraum 1, in dem das den nicht dargestellten Kalibriereinsatz verlassende rohrförmige Extrudat 2 mittels im Kalibrierraum l angeordneter Sprühdüsen 3 gekühlt wird.The calibration device shown schematically in the drawing has a cylindrical calibration space 1 in which the not shown Tubular extrudate 2 leaving the calibration insert by means of im Calibration room l arranged spray nozzles 3 is cooled.

Die von dem Extrudat 2 abfließende und sich im unteren Teil des Kalibrierraumes 1 sammelnde K#hlflüssigkeit 4 gelangt in Pfeilrichtung in eine unterhalb des Kalibrierraumes 1 befindliche Umwälzpumpe 5, die es über einen Wasserverteiler 6 und Druckleitungen 7 erneut den Sprühdüsen 3 zuführt. Gleichzeitig wird von der Umwälzpumpe 5 über eine Betriebswasserleitung 8 die Vakuumpumpe 9 versorgt, die ihrerseits durch eine Vakuumleitung 10 mit dem Kalibrierraum 1 in Verbindung steht.The one flowing from the extrudate 2 and located in the lower part of the calibration room 1 collecting coolant 4 reaches one below the calibration space in the direction of the arrow 1 located circulating pump 5, which it via a water distributor 6 and pressure lines 7 supplies the spray nozzles 3 again. At the same time, the circulation pump 5 over a process water line 8 supplies the vacuum pump 9, which in turn by a Vacuum line 10 is connected to the calibration space 1.

Der sich im Kalibrierraum 1 ergebende Stand der KUhlflüssigkeit 4 kann mit Hilfe eines als Überwachungsein richtung dienenden Schwimmerschalters 11 angehoben und abgesenkt werden. Hierzu ist er über die von einem Schaltschrank 12 ausgehenden Steuerleitungen 13 und 14 mit einem der Umwälzpumpe 5 nachgeschalteten Magnetventil 15 verbunden, das bei einer vom Kalibriereinsatz her erfolgenden verstärkten Frischwasserzufuhr überflüssige Wasseranteile durch die Abwasserleitung 16 geregelt abführt. Den in diesem Falle im Kalibrierraum 1 erforderlich werdenden Druckausgleich übernimmt ein dem Kalibrierraum 1 aufgesetztes Lufteinlaßventil 17, das ebenso als Magnetventil ausgebildet ist, und von dem aus eine Steuerleitung 18 zum Schaltschrank 12 verläuft.The level of the cooling liquid 4 resulting in the calibration room 1 can with the aid of a float switch 11 serving as a monitoring device be raised and lowered. For this purpose, it is via the control cabinet 12 outgoing control lines 13 and 14 with a circulation pump 5 connected downstream Solenoid valve 15 connected, which strengthened in one of the calibration insert Fresh water supply excess water proportions regulated by the sewage line 16 leads away. The pressure equalization that becomes necessary in the calibration room 1 in this case takes over the calibration chamber 1 attached air inlet valve 17, which is also as Solenoid valve is formed, and from which a control line 18 to the control cabinet 12 runs.

Daher arbeitet es in unmittelbarer Abhangi.gkeil; von dem die abzuführenden Flüssigkeitsmengen regelnden Magnetventil 15 und macht eine ständige Grobanpassung des im Kalibrierraum 1 herrschenden Vakuums möglich, indem der wesentliche Teil des verringerten Wasservolumens durch einströmende Luft ausgeglichen wird.Therefore it works in direct dependency. from which the to be paid Solenoid valve 15 regulates the amount of liquid and makes a constant rough adjustment of the vacuum prevailing in the calibration room 1 possible by the essential part the reduced water volume is compensated for by inflowing air.

Damit aber immer etwas weniger Luft einströmt, als Wasser abgepumpt wird, ist eine Anpassung an den jeweils gewünschten, vom zu kalibrierenden Extrudat 2 abhängigen Betriebszustand erforderlich.-Diese Anpassung kann über eine dem Lufteinlaßventil 17 zugeordnete manuell zu betätigende Drossel 19 vorgenommen werden. Erfolgt dagegen beim Erreichen des gewünschten Flüssigkeitsstandes im Kalibrierraum 1 ein vom Schwimmerschalter 11 bewirktes Schließen des Lufteinlaßventiles 17, so wird die dann noch verbleibende geringe Abweichung des Vakuums vom Sollwert von einem zur Feinregulierung bestimmten Vakuumventil 20 übernommen. Eine bessere regelungstechnische Erfassung des Regelprozesses erreicht man schließlich mit einem im Schaltschrank 12 untergebrachten Zeitglied 21, von dem entweder das Lufteinlaßventil 17 oder das die abzuführende Flüssigkeitsmenge regelnde Magnetventil 15 bzw. beide durch den Schwimmerschalter 11 geschaltet werden.So that a little less air flows in than water is pumped out is an adaptation to the particular desired extrudate to be calibrated 2 dependent operating status required.-This adjustment can be made via the air inlet valve 17 associated manually operated throttle 19 can be made. Is done against it when the desired liquid level is reached in calibration room 1, the float switch turns on 11 caused the air inlet valve 17 to close, the remaining small deviation of the vacuum from the target value from one intended for fine adjustment Vacuum valve 20 taken over. A better control-related recording of the control process is finally reached with a timer housed in the control cabinet 12 21, from which either the air inlet valve 17 or the amount of liquid to be discharged regulating solenoid valve 15 or both can be switched by the float switch 11.

LeerseiteBlank page

Claims (3)

Vorrichtung zum Kalibrieren von aus thermoplastischen Kunststoffen extrudierten Rohren oder Profilen Anspruche: u Vorrichtung zum Kalibrieren von aus thermoplastischen Kunststoffen extrudierten Rohren oder Profilen, bei der das Extrudat in einem geschlossenen, unter Vakuum stehenden Kalibrierraum mittels einer ihm durch Düsen aufgesprühten, von einer Umwälzpumpe dem unteren Bereich des Kalibrierraumes entnommenen und sich nach dem Versprühen wieder dort sammelnden Flüssigkeit gekühlt wird, deren Flüssigkeitsspiegel durch eine Uberwachungaeinrichtungy wie insbesondere einem Schwimmerschalter, gesteuert anhebbar und absenkbar ist, wobei die zum Absenken des i ssigkeitaspiegels jeweils abzuführende FlUs sigkeitsmenge hinter dem Druckstutzen der Umwälzpumpe durch ein mit der Überwachungseinrichtung in Wirkverbindung stehendes Ventil geregelt austritt, dadurch gekennzeichnet, daß dem Kalibrierraum ein in Abhängigkeit vom Ventil für die Regelung der abzuführenden Flüssigkeitsmenge betätigtes LuSteinlaßventil mit einer ihm zugeordneten Drossel und einem die Feinregulierung übernehmenden Vakuumventil aufgesetzt ist. Device for the calibration of thermoplastics extruded pipes or profiles claims: u device for calibrating from thermoplastics extruded pipes or profiles in which the extrudate in a closed, under vacuum calibration room by means of a Nozzles sprayed on by a circulation pump in the lower area of the calibration room removed and cooled there again after spraying collecting liquid whose liquid level is monitored by a monitoring device such as in particular a float switch that can be raised and lowered in a controlled manner, with the one for lowering of Liquid level, the amount of liquid to be discharged behind the pressure port the circulating pump by a stand in operative connection with the monitoring device Valve exits in a regulated manner, characterized in that the calibration space is a function of LuSt inlet valve actuated by the valve for regulating the amount of liquid to be discharged with a throttle assigned to it and a vacuum valve that takes over the fine adjustment is put on. 2. Kalibriervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die dem Iiufteinlaßventil zugeordnete Drossel eine ihre Anpassung an den Jeweils gewünschten Betriebszustand ermöglichende Verstellbarkeit aufweist.2. Calibration device according to claim 1, characterized in that the throttle associated with the air inlet valve is adapted to the respective has the desired operating state enabling adjustability. 3. Kalibriervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Lufteinlaßventil und/oder das die abzuführende Flüssigkeitsmenge regelnde Ventil über ein Zeitglied geschaltet werden.3. Calibration device according to claim 1 or 2, characterized in that that the air inlet valve and / or that regulates the amount of liquid to be discharged Valve can be switched via a timer.
DE3220837A 1982-06-03 1982-06-03 Device for cooling and calibrating extruded pipes or profiles made of thermoplastic material Expired DE3220837C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3220837A DE3220837C2 (en) 1982-06-03 1982-06-03 Device for cooling and calibrating extruded pipes or profiles made of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3220837A DE3220837C2 (en) 1982-06-03 1982-06-03 Device for cooling and calibrating extruded pipes or profiles made of thermoplastic material

Publications (2)

Publication Number Publication Date
DE3220837A1 true DE3220837A1 (en) 1983-12-08
DE3220837C2 DE3220837C2 (en) 1985-05-23

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DE3220837A Expired DE3220837C2 (en) 1982-06-03 1982-06-03 Device for cooling and calibrating extruded pipes or profiles made of thermoplastic material

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688735A1 (en) * 1992-01-08 1993-09-24 Gessner Rudolf DEVICE FOR COOLING PLASTIC OR RUBBER MATERIALS, CONTINUOUSLY EXTRUDED.
US5578328A (en) * 1993-10-05 1996-11-26 Mikron Industries, Inc. Apparatus for the cooling of extruded plastic profiles or sections
EP0760279A1 (en) * 1995-08-29 1997-03-05 Mikron Industries Method of and apparatus for the cooling of extruded plastic profiles or sections
DE202010015978U1 (en) * 2010-11-29 2012-03-01 Speck Pumpen Walter Speck Gmbh & Co. Kg Pump unit for a calibration tool of an extrusion line
CN106003630A (en) * 2016-06-24 2016-10-12 芜湖市万华塑料制品有限公司 Cooling and cleaning water recovery device for injection molds

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544611A1 (en) * 1975-10-06 1977-04-07 Plastic Ind Ausruestungs Gmbh DEVICE FOR CALIBRATING TUBES OR PROFILES EXTRUDED FROM THERMOPLASTIC PLASTICS
DE2727260A1 (en) * 1976-06-18 1977-12-29 Bandera Luigi Mecc Spa Rapid cooling for hollow plastic extrusions - with extra water cooling between extruder head and main cooler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544611A1 (en) * 1975-10-06 1977-04-07 Plastic Ind Ausruestungs Gmbh DEVICE FOR CALIBRATING TUBES OR PROFILES EXTRUDED FROM THERMOPLASTIC PLASTICS
DE2727260A1 (en) * 1976-06-18 1977-12-29 Bandera Luigi Mecc Spa Rapid cooling for hollow plastic extrusions - with extra water cooling between extruder head and main cooler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688735A1 (en) * 1992-01-08 1993-09-24 Gessner Rudolf DEVICE FOR COOLING PLASTIC OR RUBBER MATERIALS, CONTINUOUSLY EXTRUDED.
US5578328A (en) * 1993-10-05 1996-11-26 Mikron Industries, Inc. Apparatus for the cooling of extruded plastic profiles or sections
EP0760279A1 (en) * 1995-08-29 1997-03-05 Mikron Industries Method of and apparatus for the cooling of extruded plastic profiles or sections
DE202010015978U1 (en) * 2010-11-29 2012-03-01 Speck Pumpen Walter Speck Gmbh & Co. Kg Pump unit for a calibration tool of an extrusion line
CN106003630A (en) * 2016-06-24 2016-10-12 芜湖市万华塑料制品有限公司 Cooling and cleaning water recovery device for injection molds

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