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DE1031092B - Process for the production of molds for organic substances which can be processed in the plastic or melt state - Google Patents

Process for the production of molds for organic substances which can be processed in the plastic or melt state

Info

Publication number
DE1031092B
DE1031092B DEM25867A DEM0025867A DE1031092B DE 1031092 B DE1031092 B DE 1031092B DE M25867 A DEM25867 A DE M25867A DE M0025867 A DEM0025867 A DE M0025867A DE 1031092 B DE1031092 B DE 1031092B
Authority
DE
Germany
Prior art keywords
molds
plastic
production
organic substances
processed
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
Application number
DEM25867A
Other languages
German (de)
Inventor
Fritz Richter
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEM25867A priority Critical patent/DE1031092B/en
Publication of DE1031092B publication Critical patent/DE1031092B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/20—Making working faces of dies, either recessed or outstanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

DEUTSCHESGERMAN

Die Erfindung betrifft das Herstellen von Formen für im plastischen oder Schmelzzustand verarbeitbare organische Stoffe, insbesondere das Herstellen von Spritzformen für Kunststoffe, und bezieht sich auf ein Verfahren, nach dem ein Stahlmodell des herzustellenden Teiles unter Druck in einen Rohling eingesenkt wird, der aus erwärmtem Zink oder Zinklegierungen besteht. Die Temperatur, bei der das Stahlmodell in das Zink oder die Zinklegierung eingesenkt wird, liegt hierbei zweckmäßig zwischen 200 und 250° C, jedoch können auch bei niedrigeren und höheren Temperaturen brauchbare Formen erbalten werdenThe invention relates to the production of molds for processable in the plastic or melt state organic substances, in particular the manufacture of injection molds for plastics, and refers to a Process according to which a steel model of the part to be produced is sunk into a blank under pressure made of heated zinc or zinc alloys. The temperature at which the steel model is in the zinc or the zinc alloy is sunk, is expediently between 200 and 250 ° C, however usable shapes can also be obtained at lower and higher temperatures

Die Erfindung besteht darin, daß das Modell zunächst mit dem Werkstoff der Form umgössen und erst anschließend in die Form eingesenkt wird. Insbesondere bei komplizierten und/oder großflächigen Formen i.st dieses Verfahren zur einfachen Herstellung der Formen geeignet. Es ist zwar schon bekannt, Formen dadurch herzustellen, daß das Modell umgössen wird, jedoch ist in diesen Fällen infolge des Schrumpfeiis der Werkstoffe eine ungenaue und unsaubere Oberfläche erzielt worden, so daß eine zusätzliche spanabhebende Nachbearbeitung erforderlich war. Bei Verwendung eines Pfaffen mit einem Ansatz, dessen Querschnitt größer ist als der angrenzende Querschnitt des Modells, ist es vorteilhaft, das Modell nur bis zum Ansatz zu umgießen. Man erhält dann durch das mindestens teilweise Miteinsenken des Ansatzes eine bessere Verdichtung der Formenoberfläche an der Einzugszone und deren bessere Ausbildung.The invention consists in that the model is first cast around with the material of the form and is only then sunk into the mold. Especially with complex and / or large areas Molds This method is suitable for the simple production of molds. It is already known Making molds by casting around the model, however, in these cases, as a result of the Shrinkage of the materials an imprecise and unclean surface has been achieved, so that an additional Post-cutting machining was required. When using a priest with a neck, whose cross-section is larger than the adjacent cross-section of the model, it is advantageous to use the model only to be poured over to the base. This is then obtained by at least partially countersinking the approach a better compression of the mold surface at the feed zone and its better formation.

In den Abb- 1 und 2 ist das erfindungsgemäße Verfahren an einem Beispiel veranschaulicht.In Figs. 1 and 2, the method according to the invention is illustrated with an example.

In Abb. 1 ist das Gießen der Form beispielsweise dargestellt. Der Pfaffe 1 wird in dem Formkasten 11 mit Boden 12 mit dem Rohlingsmaterial 13 umgössen. Es wird dann der Boden 12 abgenommen und der Pfaffe 1, wie in Abb. 2 dargestellt, eingesenkt. Hierdurch wird die Form um den Betrag 15 vertieft, so daß die Wände durch die Verdichtung beim Einsenken die durch Gießen allein nicht erzielbare Oberflächengute von gesenkten Formen erhalten.In Fig. 1, the casting of the mold is shown for example. The Pfaffe 1 is in the molding box 11 with the base 12 encapsulated with the blank material 13. The bottom 12 is then removed and the Pfaffe 1, as shown in Fig. 2, sunk. This deepens the shape by the amount 15, see above that the walls due to the compaction when sinking the surface good that cannot be achieved by casting alone obtained from lowered molds.

für im plastischen oder Schmelzzustandfor in the plastic or molten state

verarbeitbare organische Stoffeprocessable organic substances

Anmelder:Applicant:

Badische Anilin- & Soda-Fabrik
Aktiengesellschaft, Ludwigshafen/RheinAniline & Soda Factory in Baden
Aktiengesellschaft, Ludwigshafen / Rhein

Fritz Richter, Köppern (Taunus),
ist als Erfinder genannt wordenFritz Richter, Köppern (Taunus),
has been named as the inventor

Als Fo-rmkasten in Abb. 1 kann der auch für die Senkung dienende Raum 14 dienen.The space 14, which is also used for the lowering, can serve as a molding box in Fig. 1.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Verfahren zum Herstellen von Formen aus Zink oder Zinklegierungen für im plastischen oder Schmelzzustand verarl>eitbare organische Stoffe, insbesondere Kunststoffe, durch Einsenken bei erhöhter Tempera tor, dadurch gekennzeichnet, daß das Modell mit dem Werkstoff der Form umgössen und erst anschließend in die Form eingesenkt wird.Process for the production of molds from zinc or zinc alloys for in plastic or Melt condition processable organic substances, especially plastics, by sinking at elevated temperatures Tempera gate, characterized in that the model is encased with the material of the form and only then is sunk into the mold.
DEM25867A 1955-01-22 1955-01-22 Process for the production of molds for organic substances which can be processed in the plastic or melt state Pending DE1031092B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM25867A DE1031092B (en) 1955-01-22 1955-01-22 Process for the production of molds for organic substances which can be processed in the plastic or melt state

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM25867A DE1031092B (en) 1955-01-22 1955-01-22 Process for the production of molds for organic substances which can be processed in the plastic or melt state

Publications (1)

Publication Number Publication Date
DE1031092B true DE1031092B (en) 1958-05-29

Family

ID=7299668

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM25867A Pending DE1031092B (en) 1955-01-22 1955-01-22 Process for the production of molds for organic substances which can be processed in the plastic or melt state

Country Status (1)

Country Link
DE (1) DE1031092B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US945668A (en) * 1908-05-02 1910-01-04 Wm L Gilbert Clock Company Method of forming clock-ratchets.
FR677852A (en) * 1929-07-04 1930-03-15 Molds intended for the molding of various articles
US2383356A (en) * 1944-04-05 1945-08-21 Remington Arms Co Inc Firearm
DE815138C (en) * 1950-06-04 1951-09-27 Gerhard Dr-Ing Habil Oehler Process for the production of cut plates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US945668A (en) * 1908-05-02 1910-01-04 Wm L Gilbert Clock Company Method of forming clock-ratchets.
FR677852A (en) * 1929-07-04 1930-03-15 Molds intended for the molding of various articles
US2383356A (en) * 1944-04-05 1945-08-21 Remington Arms Co Inc Firearm
DE815138C (en) * 1950-06-04 1951-09-27 Gerhard Dr-Ing Habil Oehler Process for the production of cut plates

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