DE2617898A1 - Oblique extruder head for thermoplastic tubes - has annular reservoir with discharge piston and supply duct incorporated in the piston - Google Patents

Oblique extruder head for thermoplastic tubes - has annular reservoir with discharge piston and supply duct incorporated in the piston

Info

Publication number
DE2617898A1
DE2617898A1 DE19762617898 DE2617898A DE2617898A1 DE 2617898 A1 DE2617898 A1 DE 2617898A1 DE 19762617898 DE19762617898 DE 19762617898 DE 2617898 A DE2617898 A DE 2617898A DE 2617898 A1 DE2617898 A1 DE 2617898A1
Authority
DE
Germany
Prior art keywords
piston
annular
supply duct
oblique
extruder 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.)
Granted
Application number
DE19762617898
Other languages
German (de)
Other versions
DE2617898C2 (en
Inventor
Reiner Dipl Ing Kader
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2617898A priority Critical patent/DE2617898C2/en
Publication of DE2617898A1 publication Critical patent/DE2617898A1/en
Application granted granted Critical
Publication of DE2617898C2 publication Critical patent/DE2617898C2/en
Expired legal-status Critical Current

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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
    • B29C48/03—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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • 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
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Oblique extruder head for mfr. of thermoplastic tubular strands, according to the parent patent, has an annular reservoir for the moulding cpd. which extends in machine direction and is connected to the screw press by an annular supply duct that opens out toward the extruder die. The reservoir is discharged, in direction of the die, by means of a piston. The supply duct is arranged within the frontal face of the piston which is designed as an annular, double-casing piston. In this addn., the moulding cpd. reaches the annular duct of the piston through a central supply duct arranged in the mandrel via radial cross ducts, lengthwise extending ducts and outlets. The flow path of the moulding cpd. is shortened, as compared with claims in the parent patent.

Description

Spritzkopf zum Herstellen eines schlauchförmigenSpray head for producing a tubular

Stranges aus thermoplastischem Kunststoff.Thermoplastic strand.

Die Erfindung bezieht sich auf einen Spritzkopf zum Herstellen eines schlauchförmigen Stranges aus thermoplastischem Kunststoff, wie er mit den Merkmalen des Oberbegriffes des Anspruches 1 beschrieben ist.The invention relates to an extrusion head for producing a tubular strand made of thermoplastic material, as it is with the characteristics of the preamble of claim 1 is described.

Zur Materialzuführung durch den Ringkolben in den Speicherraum ist beim Gegenstand der Patentanmeldung P 21 61 356.9-16 im Außenmantel des Doppelmantelkolbens ein zur Zylinderwand des Spritzkopfes und zur Zuführung des Extruders offener, gegenüber der Stirnfläche des Ringkolbens abgeschlossener und dem Hub des Ringkolbens entsprechender Längskanal angeordnet, welcher einen Durchgang zu dem der Stirnfläche des Ringkolbens abgewandten Ende des Zuführkanals aufweist.For material supply through the annular piston into the storage space is in the subject of patent application P 21 61 356.9-16 in the outer jacket of the double-walled piston one that is open to the cylinder wall of the extruder head and to the feed of the extruder, opposite one another the end face of the annular piston and more corresponding to the stroke of the annular piston Arranged longitudinal channel, which has a passage to that of the end face of the annular piston having remote end of the feed channel.

Hierbei muß insbesondere bei Einspeisung durch nur einen Extruder das von außen als Vollstrang zugeführte Material teilweise mindestens den halben Umfang der Außenfläche des Ringkolbeninnenteils umströmen, um in den ringförmigen Zuführkanal zu gelangen und eine Ringform zu erhalten. Dieser relativ lange Strömungsweg kann zu Inhomogenitäten im Material führen und sich unter Umständen in unterschiedlichen Wanddicken des schlauchförmigen Stranges auswirken. Bei Verwendung von zwei und mehr Extrudern verringern sich die Fließwege proportional zur Anzahl der Extruder.In this case, especially when feeding through only one extruder at least half of the material supplied from the outside as a full strand Circumference of the outer surface of the annular piston inner part flow around in the annular To get feed channel and to get a ring shape. This relatively long flow path can lead to inhomogeneities in the Material lead and under certain circumstances affect in different wall thicknesses of the tubular strand. Using of two or more extruders, the flow paths decrease proportionally to the number the extruder.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, den Spritzkopf zum Herstellen eines schlauchförmigen Stranges aus thermoplastischem Kunststoff nach Patentanmeldung P 21 61 356.9-16 so zu veesw sern, daß auch bei Materialzuführung durch nur einen Extruder das Umströmen der Außenfläche des Ringkolbeninnenteils auf möglichst kurzen Fließwegen erfolgen kann.The present invention has set itself the task of the spray head for the production of a tubular strand made of thermoplastic material according to patent application P 21 61 356.9-16 so to veesw that also with material supply by only one extruder the flow around the outer surface of the ring piston inner part can take place on the shortest possible flow paths.

Zur Lösung dieser Aufgabe wird ein Spritzkopf vorgeschlagen, wie er mit den Merkmalen des kennzeichnenden Teils der Ansprüche 1 - 3 beschrieben ist.To solve this problem, a spray head is proposed like him is described with the features of the characterizing part of claims 1-3.

Bei Spritzkopf gemäß der Erfindung ist gewährleistet, daß mehrere Längskanäle entweder auf der Außenfläche der Pinole oder der Innenfläche des Ringkolbeninnenteils angeordnet werden können und sich damit die Fließwege beim Umströmen der thermoplastischen Masse um das Ringkolbeninnenteil proportional zur Anzahl der Längskanäle verkürzen.In the spray head according to the invention it is ensured that several Longitudinal channels either on the outer surface of the quill or the inner surface of the inner ring piston part can be arranged and thus the flow paths when flowing around the thermoplastic Shorten the mass around the ring piston inner part in proportion to the number of longitudinal channels.

Die Erfindung wird an Hand der in den Zeichnungen dargestellten Ausführungsbeispielen näher beschrieben.The invention is based on the embodiments shown in the drawings described in more detail.

Es zeigen Figur 1: Eine Ausführungsform mit auf der Innenfläche des Ringkolbeninnenteils angeordneten Längskanälen; Figur 2: Eine Ausführungsform mit auf der Außenfläche der Pinole angeordneten Längskanälen.FIG. 1 shows an embodiment with on the inner surface of the Longitudinal channels arranged in the inner part of the annular piston; Figure 2: An embodiment with Longitudinal channels arranged on the outer surface of the quill.

Bei der in Figur 1 dargestellten Ausführungsform strömt der thermoplastische Kunststoff vom Extruder 10 zunächst durch den Kanal 13 und nach Aufteilung in mindestens zwei Teilströme durch die entsprechende Anzahl Querkanäle 14 und auf der Innenfläche des Ringkolbeninnenteils 5 angeordneten Längskanälen 11 und den kreisförmigen Durchgängen 12 und gelangt nach Umströmen des Ringkolbeninnenteils 5 in den ringförmigen Zuführkanal 6.In the embodiment shown in Figure 1, the thermoplastic flows Plastic from the extruder 10 first through the channel 13 and after division into at least two partial flows through the corresponding number of transverse channels 14 and on the inner surface of the annular piston inner part 5 arranged longitudinal channels 11 and the circular passages 12 and arrives after flowing around the inner ring piston part 5 in the annular feed channel 6.

Bei der in Figur 2 dargestellten Ausführungsform strömt der thermoplastische Kunststoff vom Extruder 10 zunächst durch den Kanal 13 und nach Aufteilung in mindestens zwei Teilströme durch die entsprechende Anzahl Querkanäle 14 und auf der Außenfläche der Pinole angeordneten Längskanälen 11 und den kreisförmigen Durchgängen 12 und gelangt nach Umströmen des Ringkolbeninnenteils 5 in den ringförmigen Zuführkanal 6.In the embodiment shown in Figure 2, the thermoplastic flows Plastic from the extruder 10 first through the channel 13 and after division into at least two partial flows through the corresponding number of transverse channels 14 and on the outer surface the quill arranged longitudinal channels 11 and the circular passages 12 and reaches the ring-shaped feed channel after flowing around the inner ring piston part 5 6th

Patentansprüche L e e r s e i t eClaims L e r s e i t e

Claims (3)

Patentansprüche 1. Spritzkopf zum Herstellen eines schlauchförmigen Stranges aus thermoplastischem Kunststoff nach Patentanmeldung P 21 61 356.9-16, bestehend aus einem Winkelspritzkopf der einen in Ausspritzrichtung verlaufenden und mit der Schneckenpresse durch einen ringförmigen zur Spritzdüse hin offenen Zuführungskanal verbundenen ringförmigen Speicherraum für den Kunststoff aufweist, wobei der Speicherraum mittels eines Kolbens in Richtung auf die Spritzdüse entleerbar ist, und bei dem der Zuführkanal innerhalb der Stirnfläche des als Doppelmantelkolben ausgebildeten Ringkolbens angeordnet ist, dadurch gekennzeichnet, daß das vom Extruder eingespeiste Material durch einen in der Pinole angeordneten zentralen Zuführungskanal (13) über von dort radial nach außen gerichtete Querkanäle (14) und Längskanäle (11) und Auslaßöffnungen (12) in den Ringkanal (6) des Doppelmantelkolbens (3) gelangt.Claims 1. Spray head for producing a tubular Rope made of thermoplastic according to patent application P 21 61 356.9-16, consisting of an angled spray head of the one running in the direction of spraying and with the screw press through an annular one that is open towards the spray nozzle Having feed channel connected annular storage space for the plastic, wherein the storage space can be emptied by means of a piston in the direction of the spray nozzle is, and in which the feed channel within the end face of the double-jacketed piston formed annular piston is arranged, characterized in that the extruder material fed in through a central feed channel arranged in the quill (13) via transverse channels (14) and longitudinal channels directed radially outward from there (11) and outlet openings (12) in the annular channel (6) of the double jacket piston (3). 2. Spritzkopf nach Anspruch (1), dadurch gekennzeichnet, daß die Längskanäle (11) auf der Außenfläche der Pinole (2) angeordnet sind. 2. Injection head according to claim (1), characterized in that the Longitudinal channels (11) are arranged on the outer surface of the quill (2). 3. Spritzkopf nach Anspruch (1), dadurch gekennzeichnet, daß die Längskanäle (11) auf der Innenfläche des Ringkolbeninnenteils (5) angeordnet sind. 3. Injection head according to claim (1), characterized in that the Longitudinal channels (11) are arranged on the inner surface of the inner ring piston part (5).
DE2617898A 1976-04-23 1976-04-23 Injection head for producing a tubular strand made of thermoplastic material Expired DE2617898C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2617898A DE2617898C2 (en) 1976-04-23 1976-04-23 Injection head for producing a tubular strand made of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2617898A DE2617898C2 (en) 1976-04-23 1976-04-23 Injection head for producing a tubular strand made of thermoplastic material

Publications (2)

Publication Number Publication Date
DE2617898A1 true DE2617898A1 (en) 1977-11-03
DE2617898C2 DE2617898C2 (en) 1984-06-28

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Application Number Title Priority Date Filing Date
DE2617898A Expired DE2617898C2 (en) 1976-04-23 1976-04-23 Injection head for producing a tubular strand made of thermoplastic material

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DE (1) DE2617898C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753297A1 (en) * 1976-12-01 1978-06-08 Lupke DEVICE FOR MANUFACTURING THERMOPLASTIC HOSE OR PIPE
DE3026822A1 (en) * 1980-07-16 1982-01-28 Reiner Dipl.-Ing. 5205 St.Augustin Kader Uniform thermoplastic tubing - in which extruder feeds elbowed head with annular discharge ram which never interrupts continuous polymer flow
EP0349872A1 (en) * 1988-07-04 1990-01-10 Krupp Kautex Maschinenbau GmbH Method and apparatus for the manufacture of hollow bodies from thermoplastics material
WO1991018731A1 (en) * 1990-06-01 1991-12-12 Mauser-Werke Gmbh Storage head for a blow moulding machine
US5206032A (en) * 1990-06-29 1993-04-27 Krupp Kautex Maschinenbau Gmbh Apparatus for producing a preform for the manufacture of a hollow body from thermoplastic material
DE102015012937A1 (en) * 2015-10-01 2017-04-06 Kocher-Plastik Maschinenbau Gmbh Device for reducing the microbiological contaminants of container products

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7043802U (en) * 1900-01-01 Kader R Injection head for a device for producing a tubular strand from thermoplastic material
DE2050563A1 (en) * 1970-10-15 1972-04-20 Kader R Thermoplastics tube extrusion - with material passed round mandrel from above

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7043802U (en) * 1900-01-01 Kader R Injection head for a device for producing a tubular strand from thermoplastic material
DE2050563A1 (en) * 1970-10-15 1972-04-20 Kader R Thermoplastics tube extrusion - with material passed round mandrel from above

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753297A1 (en) * 1976-12-01 1978-06-08 Lupke DEVICE FOR MANUFACTURING THERMOPLASTIC HOSE OR PIPE
DE3026822A1 (en) * 1980-07-16 1982-01-28 Reiner Dipl.-Ing. 5205 St.Augustin Kader Uniform thermoplastic tubing - in which extruder feeds elbowed head with annular discharge ram which never interrupts continuous polymer flow
EP0349872A1 (en) * 1988-07-04 1990-01-10 Krupp Kautex Maschinenbau GmbH Method and apparatus for the manufacture of hollow bodies from thermoplastics material
WO1991018731A1 (en) * 1990-06-01 1991-12-12 Mauser-Werke Gmbh Storage head for a blow moulding machine
US5256051A (en) * 1990-06-01 1993-10-26 Mauser-Werke Gmbh Storage head for a blow molding machine
US5206032A (en) * 1990-06-29 1993-04-27 Krupp Kautex Maschinenbau Gmbh Apparatus for producing a preform for the manufacture of a hollow body from thermoplastic material
DE102015012937A1 (en) * 2015-10-01 2017-04-06 Kocher-Plastik Maschinenbau Gmbh Device for reducing the microbiological contaminants of container products
US10751926B2 (en) 2015-10-01 2020-08-25 Kocher-Plastik Maschinenbau Gmbh Device for reducing microbiological contaminants of container products

Also Published As

Publication number Publication date
DE2617898C2 (en) 1984-06-28

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