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DE836818C - Injection machine for plastic masses - Google Patents

Injection machine for plastic masses

Info

Publication number
DE836818C
DE836818C DEP9095A DEP0009095A DE836818C DE 836818 C DE836818 C DE 836818C DE P9095 A DEP9095 A DE P9095A DE P0009095 A DEP0009095 A DE P0009095A DE 836818 C DE836818 C DE 836818C
Authority
DE
Germany
Prior art keywords
helical spring
mouthpiece
spring
plastic masses
diameter
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.)
Expired
Application number
DEP9095A
Other languages
German (de)
Inventor
Paul Ebeling
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DEP9095A priority Critical patent/DE836818C/en
Application granted granted Critical
Publication of DE836818C publication Critical patent/DE836818C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06Insulating conductors or cables
    • H01B13/14Insulating conductors or cables by extrusion
    • 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
    • B29C48/06Rod-shaped
    • 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
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • 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
    • B29C48/325Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/05Filamentary, e.g. strands
    • 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

Landscapes

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

Description

Spritzmaschine für plastische Massen Bei der Herstellung von Formsträngen und Schläuchen aus Gummi oder Kunststoffen auf Strangspritzmaschinen und heim Umhüllen von elcktrischeii Kabeln oder Leitungen mit solchen plastischen fassen ist die genaue Einhaltung des vorgeschriebenen äußeren Durchmessers schwierig, weil der Werkstoff je nach der verwendeten Mischung und den jeweiligen Arbeitsbedingungen nach dem Austritt aus der Spritzmaschine stets mehr oder welliger quillt oder unter Umständen auch schrumpft, svol3ei sich der Grad dieser Veränderung vorher nicht genau hestimmen läßt. Man ist daher gewöhnlich gezwungen, das verwendete Mundstück so oft auszuwechseln, bis sich ein solches gefunden hat, das hei dem gerade verwendeten Werkstoff die gewünschten Äbmessungen ergibt. Dieses Auswechseln bedeutet jedoch einen erheblichen Zeit- und Materialverlust.Injection machine for plastic masses In the production of molded strands and hoses made of rubber or plastics on extrusion machines and at home of elcktrischeii cables or lines with such plastic grasp is the exact one Compliance with the prescribed outer diameter is difficult because of the material depending on the mixture used and the respective working conditions after The exit from the injection molding machine always swells more or more wavily or under certain circumstances also shrinks, although the degree of this change cannot be precisely determined beforehand leaves. One is therefore usually forced to change the mouthpiece used so often until such a thing has been found, i.e. the material currently used, the the desired dimensions. However, this replacement means a significant one Loss of time and material.

Der Erfindung liegt die Aufgabe zugrunde, eine Strangspritzmaschine für plastische Massen zu schaffen, welche bei der Herstellung von Formsträngen oder Schläuchen sowie bei der Umhüllung von elektrischen Kabeln oder Leitungen die Einhaltung des für deren äußeren Durchmesser verlangten Maßes ermöglicht, ohne daß ein Auswechseln des Mundstückes nötig ist. Die Lösung dieser aufgabe besteht nach der Erfindung darin, daß die Strangspritzmaschine für plastische Massen, insbesondere zur Ummantelung elektrischer zeitungen mit Gummi oder gummiähnlichen Stoffen, eine Mundstücksdüse mit verstellbarem Durchmesser erhält. The invention is based on the object of an extrusion molding machine for creating plastic masses, which are used in the production of molded strands or Hoses and when sheathing electrical cables or lines, compliance of the dimension required for their outer diameter without having to be replaced of the mouthpiece is necessary. The solution to this problem is according to the invention in that the extrusion machine for plastic masses, especially for sheathing electric newspapers with rubber or rubber-like materials, a mouthpiece nozzle with adjustable diameter.

Diese hlundstücksdüse besteht vorzugsweise aus einer Schraubenfeder mit rechteckigem Windungsquerschnitt, deren Durchmesser sich durch Zu- oder Aufdrehen verändern läßt. Dieses Zu- oder Aufdrehen kann heispielsweise durch radialen Druck bewirkt werden, wozu z. B. ein Klemmbackenftitter dienen kann. This hlundstücksdüse preferably consists of a helical spring with a rectangular winding cross-section, the diameter of which can be changed by opening or closing can be changed. This opening or closing can be done, for example, by means of radial pressure be effected, including z. B. can serve a clamping jaw titter.

In der Zeichnung ist eine Ausführungsform der Erfindung beispielsweise dargestellt, und zwar ist Fig. I ein Längsschnitt durch den Spritzkopf einer Strangspritzmaschine, Fig. 2 ein Querschnitt des Mundstückes derselben. In the drawing, an embodiment of the invention is for example shown, namely Fig. I is a longitudinal section through the extrusion head of an extrusion machine, Fig. 2 is a cross section of the mouthpiece of the same.

An dem Gehäuse I, in dem die Förderschnecke 2 angeordnet ist, sitzt der Spritzkopf 3, der in dem Mundstück 4 endigt. Die Düse dieses Mundstückes 4 besteht aus der Schraubenfeder 5 mit rechteckigem Querschnitt ihrer Windungen. Um den Dtirchmesser der Feder verändern zu können ist ein Klemmbackenfutter 6 vorgesehen, das durch Zti- otler Aufschrauben auf die Schrau.henfeder 5 drückt bzw. sie entlastet. Die tSbxrtragung des l)ruckes vom Klemmbackenfutter 6 auf die Schrauset feder 5 erfolgt beim Ausführungsbeisiel durch die Buchse 7, in der die Schraubenfeder 5 gelagert ist. Die Buchse 7 ist durch Schlitze 8 in mehrere Zungen 9 aufgeteilt, deren nach innen gerichtete Nasen IO die Schraubenfeder 5 in ihrer Lage festhalten. On the housing I, in which the screw conveyor 2 is arranged, is seated the spray head 3, which ends in the mouthpiece 4. The nozzle of this mouthpiece 4 is made from the coil spring 5 with a rectangular cross-section of its coils. To the diameter To be able to change the spring, a jaw chuck 6 is provided, which by At present, unscrewing it on the helical spring 5 presses or relieves it. the tSbxrtragung the l) jerk from the clamping jaw chuck 6 to the screw spring 5 takes place in the case of the embodiment through the bushing 7 in which the helical spring 5 is mounted is. The socket 7 is divided by slots 8 into several tongues 9, which according to inwardly directed lugs IO hold the helical spring 5 in place.

Vor der Schraubenfeder 5 ist im Spritzkopf ein Druckring i 1 angeordnet, der bewirkt, daß die I:rtler durch den auf den Ring einwirkenden Massedruck zusammengedrückt wird, so daß keine Masseteile in die Fugen zwischen den Schraubengängen eindringen können, wodurch die Verstellbarkeit der Schrauben feder beeinträchtigt würde. Außerdem kann das Austrittsende der Schrau'benfeder 5, soweit die Schlitze 8 der Buchse 7 reichen, noch mit einer geschlitzten Hülse 12 umgeben werden. Diese soll verhindern, daß doch zwischen den Windungen der Schraubenfeder 5 hindurchgetretene Teile der Preßmasse durch die Zwischenräume zwischen den Zungen 9 nach außen gelangen können. A pressure ring i 1 is arranged in front of the helical spring 5 in the spray head, which causes the I: rtler to be compressed by the mass pressure acting on the ring so that no mass parts penetrate the joints between the screw threads can, whereby the adjustability of the coil spring would be impaired. aside from that the exit end of the helical spring 5, as far as the slots 8 of the socket 7 are enough to be surrounded by a slotted sleeve 12. This is to prevent that but between the turns of the coil spring 5 passed parts of the Molding compound can pass through the spaces between the tongues 9 to the outside.

Durch die Schnecke 2 wird der Werkstoff in den Spritzkopf 3 und weiterhin in den von der Schraubenfeder 5 gebilldeten Hohlraum gefördert. Dabei wird die Schraubenfeder 5 in ihrer Längsrichtung ztisammetigepreßt, so daß sich eine glatte Innenwand ergibt. Die geformte Masse tritt am Austrittsende der Schraubenfeder 5 aus. Through the screw 2, the material is in the extrusion head 3 and further promoted into the cavity formed by the helical spring 5. This is where the coil spring 5 ztisammetigepreßt in its longitudinal direction, so that there is a smooth inner wall. The molded mass emerges at the exit end of the helical spring 5.

Soll der Durchmesser der Schraul>eiifeder 5 verengt werden, so wird das Klemmbackenfutter 6 etwas angezogen. Dadurch werden die Zungen 9 zusammengepreßt und übertragen den Druck auf die Sciiraubenfeder 5. Diese wird in sich selbst verdreht, so daß ihr Durchmesser sich verjüngt. If the diameter of the screw spring 5 is to be narrowed, so the jaw chuck 6 is tightened slightly. As a result, the tongues 9 are pressed together and transfer the pressure to the pirate spring 5. This is twisted in itself, so that its diameter tapers.

Wird andererseits eine Erweiterung des Mundstückes gewünscht, so wird das Klemmbackenfutter 6 gelockert. Dadurch nimmt die Schraubenfeder 5 vermöge ihrer eigenen Federkraft wieder größeren Durchmesser an.If, on the other hand, an extension of the mouthpiece is desired, then the jaw chuck 6 loosened. This takes the coil spring 5 by virtue of their own spring force again to a larger diameter.

Die Erfindung ist.im übrigen nicht an das dargestellte Ausführungsbeispiel gebunden; Form und Ausführung des Mundstückes können davon je nach Bedarf abweichen. Auch ist sie natürlich bei anderen als Schneckenpressen anwendbar. The invention is otherwise not related to the illustrated embodiment bound; The shape and design of the mouthpiece can vary as required. It is of course also applicable to other than screw presses.

Claims (7)

PATENTANSPRÜCHE: I. Strangspritzmaschine für plastische Massen, insbesondere zur Ummantelung elektrischer Leitungen mit Gummi oder gummiartigen Stoffen, dadurch gekennzeichnet, daß die Düse des Mundstückes einen verstellbaren Durchmesser hat. PATENT CLAIMS: I. Extrusion machine for plastic masses, in particular for sheathing electrical cables with rubber or rubber-like materials, thereby characterized in that the nozzle of the mouthpiece has an adjustable diameter. 2. Vorrichtung nach Anspruch I, dadurch gekennzeichnet, daß die Düse des Mundstückes aus einer Schraubenfeder mit rechteckigem Querschnitt ihrer Windungen besteht. 2. Apparatus according to claim I, characterized in that the nozzle of the mouthpiece from a helical spring with a rectangular cross-section of its coils consists. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß vor der Schraubenfeder im Spritzkopf ein Druckring angeordnet ist. 3. Apparatus according to claim 2, characterized in that before the A compression ring is arranged in the coil spring in the spray head. 4. Vorrichtung nach Anspruch 2, gekennzeichnet durch eine radial auf die Schraubenfeder wirkende Vorrichtung zwecks Veränderung ihres Durchmessers, z. B. in Form eines Klemmbackenfutters. 4. Apparatus according to claim 2, characterized by a radial device acting on the helical spring to change its diameter, z. B. in the form of a jaw chuck. 5. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Schrauhenfeder in einer Buchse gelagert ist, deren Austrittsende durch Ausschnitte in mehrere, kdernd wirkende Zungen geteilt ist. 5. Apparatus according to claim 2, characterized in that the helical spring is mounted in a socket, the outlet end of which is cut into several, baiting-looking tongues is divided. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Zungen in nach innen gerichtete Nasen endigen. 6. Apparatus according to claim 5, characterized in that the tongues terminate in inward-pointing noses. 7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Schraubenfeder im Bereich der Ausschnitte der Buchse mit einer geschlitzten Hülse umgeben ist. 7. Apparatus according to claim 5, characterized in that the helical spring is surrounded by a slotted sleeve in the area of the cutouts of the socket.
DEP9095A 1948-10-02 1948-10-02 Injection machine for plastic masses Expired DE836818C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP9095A DE836818C (en) 1948-10-02 1948-10-02 Injection machine for plastic masses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP9095A DE836818C (en) 1948-10-02 1948-10-02 Injection machine for plastic masses

Publications (1)

Publication Number Publication Date
DE836818C true DE836818C (en) 1952-04-17

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ID=7362091

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP9095A Expired DE836818C (en) 1948-10-02 1948-10-02 Injection machine for plastic masses

Country Status (1)

Country Link
DE (1) DE836818C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770836A (en) * 1953-06-10 1956-11-20 Monsanto Chemicals Pressure head for extruders
DE1097661B (en) * 1953-12-16 1961-01-19 Tno Ring nozzle for extrusion presses for the production of pipes and hoses from plastic material, mainly from organic thermoplastic
US4381184A (en) 1979-07-19 1983-04-26 Samuel Hurni Extruder apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770836A (en) * 1953-06-10 1956-11-20 Monsanto Chemicals Pressure head for extruders
DE1097661B (en) * 1953-12-16 1961-01-19 Tno Ring nozzle for extrusion presses for the production of pipes and hoses from plastic material, mainly from organic thermoplastic
US4381184A (en) 1979-07-19 1983-04-26 Samuel Hurni Extruder apparatus

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