CH247500A - Injection head for thermoplastic compounds. - Google Patents
Injection head for thermoplastic compounds.Info
- Publication number
- CH247500A CH247500A CH247500DA CH247500A CH 247500 A CH247500 A CH 247500A CH 247500D A CH247500D A CH 247500DA CH 247500 A CH247500 A CH 247500A
- Authority
- CH
- Switzerland
- Prior art keywords
- roller
- injection
- injection head
- head
- characters
- Prior art date
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
- B29C48/30—Extrusion nozzles or dies
- B29C48/35—Extrusion nozzles or dies with rollers
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
Description
Spritzkopf für thermoplastische Massen.
Gegenstand vorliegender Erfindung ist ein Spritzkopf zur Herstellung von mit Schrift- oder Bildzeichen, z. B. Dekorn- tionszeichen und dergleichen, versehenen Bändern aus thermoplastischem Material.
Es ist bekannt, bandartige Bahnen aus thermoplastischem Material in der Weise herzustellen, dass man das entsprechende Material in zähplastischem Zustand z. B. mittels einer Förderschnecke durch eine Matrize mit schlitzförmigem Ausgang presst, wobei jedoch immer nur das der Querschnittsform des Schlitzes, das heisst der Spritz mat. rize entsprechende Bandprofil erhalten werden kann, nicht aber z. B. eingeprägte oder erhöhte Schrift-, Bilddekorationszeichen und dergleichen.
Dieser Mangel an bekannten Spritzköpfen wird nun erfindungsgemäss dadurch behoben, dass der die Querschnittsform des herzustellenden Bandes bestimmende Ausgangsschlitz der Spritzmatrize teilweise von mindestens einer im Matrizenkopf drehbar gelagerten, zur Erzeugung der Zeichen auf dem Band bestimmten Rolle begrenzt ist.
Die Zeichnung veranschaulicht schematisch eine beispielsweise Ausführungsform des Erfindungsgegenstandes.
Fig. 1 zeigt den Spritzkopf im Längsschnitt.
Fig. 2 ist eine Darstellung der Antriebsverbindung von Masseförderwerk und Matrizenrolle.
Fig. 3 stellt zwei verschiedene Matrizenrollen und
Fig. 4 je ein Stück der mit diesem Spritzkopf und den beiden verschiedenen Rollen hergestellten Bänder dar.
Mit a ist das Gehäuse des Spritzkopfes und mit b der Matrizenkopf bezeichnet. Das Spritzkopfgehäuse weist eine trichterartige .öffnung c zur Einführung des thermoplastischen Ausgangsmaterials für die Ilerstellung der Bänder, sowie einen zylindrischen Förderkanal d auf mit einer Förderschnecke e, die in bekannter Weise über ein Zahnradgetriebe f in Drehung versetzt werden kann. Um den aussen zylindrischen Teil des Gehäuses a ist ein elektrisches Heizelement h angeordnet.
Das eine schlitzartige Ausmündung d'des Förderkanals aufweisende vordere, ebenfalls mit einem aussenseitigen Heizelement h' ausgerüstete Ende a' des Spritzkopfgehäuses ist hülsenartig ausgebildet und mit einem Aussengewinde a" versehen. In diesem hül senartigen Gehäuseteil des Spritzkopfes ist der Matrizenkopf b mittels einer Uberwurf- mutter i lösbar befestigt. Dieser, wie aus Fig. 2 ersichtlich, zweiteilige Matrizenkopf weist eine entsprechende Ausnehmung und Lagerstellen für eine zylindrische Rolle r auf.
Dabei ist die an die schlitzartige Ausmündung d' des Förderkanals anschliessende Ausnehmung des Matrizenkopfes so bemessen und geformt, dass nach Einsetzen einer der aus Fig. 3 ersichtlichen Rollen r im Matrizenkörper ein dem Profil des herzustellenden Bandes entsprechender Schlitz verbleibt, durch den die durch Erwärmung im SpEitz- kopf plastisch gemachte Masse ausgepresst wird.
Die Achse o, auf der eine der gewählten Rollen r lösbar aufgekeilt ist, steht über ein Getriebe s mit der Antriebswelle der Förderschnecke e über eine der geförderten Masse entsprechende Übersetzung in Antriebsverbindung. Der zylindrische Mantel der Rolle r weist die zum Anbringen auf das herzustellende Band dienenden erhöhten oder eingravierten Schrift-, Bild- oder Dekorationszeichen auf. Durch Drehung der Rolle r mit einer dem fliessenden Band entsprechenden Umfangsgeschwindigkeit werden die gewünschten Zeichen auf dem Band gleichzeitig mit dessen Ausspritzung aus dem Matrizenkopf erzeugt.
Zur Ermöglichung der je Herstellung ver- schieden dicker Bänder mit Schrift-, Bildzeichen und dergleichen können die Lagerungsorgane in an sich bekannter Weise, z. B. mittels : Kulissenführung, derart höhen- verstellbar gebaut sein, dass sich die in den Matrizenkopf eingesetzte Rolle in bezug auf die Mittelachse des Ausgangsschlitzes für die thermoplastische Masse passend einstellen lässt. Die einen Teil des Ausgangsschlitzes bildende Rolle könnte auch, je nach der Kon- sistenz des zu spritzenden plastischen Materials, frei drehbar angeordnet sein, so dass deren Drehung durch den Massestrang bewirkt wird.
Injection head for thermoplastic compounds.
The present invention is a spray head for the production of characters or symbols such. B. decorative signs and the like, provided tapes made of thermoplastic material.
It is known to produce ribbon-like webs of thermoplastic material in such a way that the corresponding material in a viscoplastic state z. B. by means of a screw conveyor through a die with a slot-shaped exit, but always only that of the cross-sectional shape of the slot, that is, the spray mat. rize corresponding band profile can be obtained, but not z. B. embossed or raised characters, decorative picture symbols and the like.
This deficiency in known spray heads is now remedied according to the invention in that the exit slot of the spray die, which determines the cross-sectional shape of the strip to be produced, is partially limited by at least one roller which is rotatably mounted in the die head and is intended to produce the characters on the strip.
The drawing schematically illustrates an exemplary embodiment of the subject matter of the invention.
Fig. 1 shows the spray head in longitudinal section.
Figure 2 is an illustration of the drive connection of the bulk conveyor and die roller.
Fig. 3 shows two different die rolls and
Fig. 4 each represents a piece of the tapes produced with this spray head and the two different rollers.
The housing of the spray head is denoted by a and the die head is denoted by b. The spray head housing has a funnel-like opening c for introducing the thermoplastic starting material for the production of the belts, as well as a cylindrical conveying channel d with a conveying screw e which can be set in rotation in a known manner via a gear transmission f. An electrical heating element h is arranged around the outer cylindrical part of the housing a.
The front end a 'of the spray head housing, which has a slit-like opening of the conveying channel and is also equipped with an outside heating element h', is sleeve-like and provided with an external thread a ". 2, this two-part die head has a corresponding recess and bearing points for a cylindrical roller r.
The recess of the die head adjoining the slot-like opening d 'of the conveying channel is dimensioned and shaped in such a way that after one of the rollers r shown in FIG Pointed head plasticized mass is pressed out.
The axis o, on which one of the selected rollers r is detachably keyed, is in drive connection via a gear s with the drive shaft of the screw conveyor e via a gear ratio corresponding to the conveyed mass. The cylindrical jacket of the roll r has the raised or engraved writing, picture or decorative symbols used for attachment to the tape to be produced. By rotating the roller r at a circumferential speed corresponding to the flowing tape, the desired characters are generated on the tape at the same time as it is ejected from the die head.
In order to enable the bands of different thicknesses with characters, symbols and the like to be produced, the storage organs can be used in a known manner, e.g. B. by means of: slotted guide, be built to be height-adjustable in such a way that the roller inserted in the die head can be adjusted appropriately with respect to the central axis of the exit slot for the thermoplastic compound. Depending on the consistency of the plastic material to be injected, the roller forming part of the exit slot could also be arranged to be freely rotatable, so that its rotation is caused by the strand of material.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH247500T | 1945-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH247500A true CH247500A (en) | 1947-03-15 |
Family
ID=4466265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH247500D CH247500A (en) | 1945-11-03 | 1945-11-03 | Injection head for thermoplastic compounds. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH247500A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1086040B (en) * | 1953-07-10 | 1960-07-28 | Kalle Ag | Injection head with heated ring nozzle for extrusion presses for the production of hoses from organic thermoplastic |
DE1118958B (en) * | 1952-11-08 | 1961-12-07 | Bohm & Co | Process for the production of comb rollers from plastic |
DE1263284B (en) * | 1959-11-28 | 1968-03-14 | Dr Zareh Lorenian | Device for simultaneous and continuous conveying, mixing and extrusion of plastic materials that can be molded under heat treatment |
EP0410852A1 (en) * | 1989-07-25 | 1991-01-30 | AEROSPATIALE Société Nationale Industrielle | Method and apparatus for manufacturing a covering for the internal thermal protection of a propeller |
-
1945
- 1945-11-03 CH CH247500D patent/CH247500A/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1118958B (en) * | 1952-11-08 | 1961-12-07 | Bohm & Co | Process for the production of comb rollers from plastic |
DE1086040B (en) * | 1953-07-10 | 1960-07-28 | Kalle Ag | Injection head with heated ring nozzle for extrusion presses for the production of hoses from organic thermoplastic |
DE1263284B (en) * | 1959-11-28 | 1968-03-14 | Dr Zareh Lorenian | Device for simultaneous and continuous conveying, mixing and extrusion of plastic materials that can be molded under heat treatment |
EP0410852A1 (en) * | 1989-07-25 | 1991-01-30 | AEROSPATIALE Société Nationale Industrielle | Method and apparatus for manufacturing a covering for the internal thermal protection of a propeller |
FR2650217A1 (en) * | 1989-07-25 | 1991-02-01 | Aerospatiale | INTERNAL THERMAL PROTECTION COATING PROCESS AND DEVICE |
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