DE1901013B2 - INJECTION HEAD FOR PLASTIC EXTRUSION PRESSES - Google Patents
INJECTION HEAD FOR PLASTIC EXTRUSION PRESSESInfo
- Publication number
- DE1901013B2 DE1901013B2 DE19691901013 DE1901013A DE1901013B2 DE 1901013 B2 DE1901013 B2 DE 1901013B2 DE 19691901013 DE19691901013 DE 19691901013 DE 1901013 A DE1901013 A DE 1901013A DE 1901013 B2 DE1901013 B2 DE 1901013B2
- Authority
- DE
- Germany
- Prior art keywords
- flow channel
- head
- plastic
- extrusion
- nozzle mouthpiece
- 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
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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Der Erfindung liegt die Aufgabe zugrunde, einen Spritzkopf der eingangs beschriebenen Gattung so zu gestalten, daß eine intensive und homogene Durchmischung der durch den Spritzkanal gedrückten Massen erreichbar ist, indem Grenzflächen, Streifen oder Markierungen zwischen den durch die einzelnen Teilkanäle gedrückten Stoffströmen vermieden werden.The invention is based on the object of providing a spray head of the type described at the beginning shape that an intensive and homogeneous mixing of the masses pushed through the spray channel can be achieved by adding interfaces, strips or markings between the individual sub-channels Pressed material flows are avoided.
Die Aufgabe wird, ausgehend von einem Spritzkopf der eingangs beschriebenen Gattung, erfindungsgemäß dadurch gelöst, daß die Schraubenfläche Bohrungen, Schütze oder Lochungen aufweistBased on a spray head of the type described at the outset, the task is according to the invention solved in that the screw surface has bores, contactors or perforations
Der durch die Erfindung erreichte Vorteil ist vor allem darin zu sehen, daß durch die Bewegungskomponente, welche durch die Schraubenfläche der durch den Spritzkanal gepreßten Masse aufgezwungen wird, ein Druckgefälle zwischen Vorder- und Rückseite der Schraubenfläche entsteht, so daß über die Bohrungen, Schlitze oder Lochungen ein intensiver Masscuustausch stattfindet. Die aus dem Spritzkopf austretende Masse weist somit ein homogenes Gefüge auf, störende Grenzflächen, Streifenbildung oder Markierungen werden vermieden.The advantage achieved by the invention is primarily to be seen in the fact that the movement component, which is forced through the screw surface of the mass pressed through the injection channel, a pressure gradient arises between the front and back of the screw surface, so that through the holes, Slits or perforations an intensive exchange of dimensions takes place. The mass emerging from the spray head thus has a homogeneous structure, disruptive Boundaries, banding or markings are avoided.
Im folgenden wird die Erfindung an Hand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlicher erläutert. Die Figur zeigt einen Schnitt durch ein Ausführungsbeispiel eines Spritzkopfes mit perspektivisch dargestellter Schraubenfläche. In the following the invention is illustrated by means of a drawing which shows only one exemplary embodiment explained in more detail. The figure shows a section through an embodiment of a spray head with helical surface shown in perspective.
Der in der Figur dargestellte Spritzkopf 1 ist für eine Kunststoffstrangpresse bestimmt und es handelt sich um einen Doppelspritzkopf, der dazu nach rechts hin symmetrisch zu ergänzen ist. Der Spritzkopf 1 besitzt vom Ausstoßende der Kunststoffstrangpresse zum nicht gezeichneten Düsenmundstück des Spritzkopfes führende Fließkanäle 2 und darin eine gewendelte Leitfläche. Man entnimmt aus der Figur unmittelbar, daß die gewendelte Leitfläche als in den Fließkanal eingelegte Schraubenfläche 3 ausgeführt ist, die im Ausführungsbeispiel von links in den FUeßkanal eingeschoben ist und durch den Bolzen 4 gehalten wird. Die Schraubenfläche 3 ist im Ausführungsbeispiel durch Verdrillung eines Flachprofils, welches beispielsweise aus Stahl oder Messing besteht, geformt. Sie ist daher kernfrei aufgebaut. Jedenfalls ist die Schraubenfläche 3 mit Bohrungen, Schützen oder Lochungen 5 versehen, die einen Teil der plastifizierten Masse durchtreten lassen.The extrusion head 1 shown in the figure is intended for a plastic extrusion press and it is a double spray head, which is to be complemented symmetrically to the right. The spray head 1 has from the ejection end of the plastic extrusion press to the nozzle mouthpiece (not shown) of the extrusion head leading flow channels 2 and therein a coiled guide surface. One inferred from the figure that the coiled guide surface is designed as a helical surface 3 inserted into the flow channel, the in the exemplary embodiment is pushed into the foot duct from the left and held by the bolt 4 will. The screw surface 3 is in the embodiment by twisting a flat profile, which for example made of steel or brass, shaped. It is therefore constructed without a core. Anyway it is the screw surface 3 is provided with bores, gates or holes 5, which are part of the plasticized Let the mass pass.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691901013 DE1901013B2 (en) | 1969-01-10 | 1969-01-10 | INJECTION HEAD FOR PLASTIC EXTRUSION PRESSES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691901013 DE1901013B2 (en) | 1969-01-10 | 1969-01-10 | INJECTION HEAD FOR PLASTIC EXTRUSION PRESSES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1901013A1 DE1901013A1 (en) | 1970-07-16 |
| DE1901013B2 true DE1901013B2 (en) | 1972-09-21 |
Family
ID=5722052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691901013 Pending DE1901013B2 (en) | 1969-01-10 | 1969-01-10 | INJECTION HEAD FOR PLASTIC EXTRUSION PRESSES |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1901013B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2708200A1 (en) * | 1976-04-29 | 1977-11-10 | Sulzer Ag | PLASTICS MACHINE, IN PARTICULAR INJECTION MOLDING MACHINE OR EXTRUDER |
| DE3038306A1 (en) * | 1980-10-10 | 1982-05-06 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | EXTRACTION DEVICE FOR PRODUCING FOAMED PLASTIC |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19637063A1 (en) * | 1996-09-12 | 1998-03-19 | Werner & Pfleiderer | Extruder for the production of plastic granules |
| AT408860B (en) * | 1999-12-17 | 2002-03-25 | A & G Extrusion Technology Gmb | METHOD FOR MIXING A MELT FLOW OF PLASTIC |
-
1969
- 1969-01-10 DE DE19691901013 patent/DE1901013B2/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2708200A1 (en) * | 1976-04-29 | 1977-11-10 | Sulzer Ag | PLASTICS MACHINE, IN PARTICULAR INJECTION MOLDING MACHINE OR EXTRUDER |
| DE3038306A1 (en) * | 1980-10-10 | 1982-05-06 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | EXTRACTION DEVICE FOR PRODUCING FOAMED PLASTIC |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1901013A1 (en) | 1970-07-16 |
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