DE836818C - Injection machine for plastic masses - Google Patents
Injection machine for plastic massesInfo
- 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
Links
- 239000004033 plastic Substances 0.000 title claims description 7
- 229920003023 plastic Polymers 0.000 title claims description 7
- 238000002347 injection Methods 0.000 title description 2
- 239000007924 injection Substances 0.000 title description 2
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 210000002105 tongue Anatomy 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 210000001331 nose Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- 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
- B29C48/15—Extrusion 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
-
- 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
-
- 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
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)
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 |
Family
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)
| 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 |
-
1948
- 1948-10-02 DE DEP9095A patent/DE836818C/en not_active Expired
Cited By (3)
| 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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