DE892825C - Injection mold - Google Patents

Injection mold

Info

Publication number
DE892825C
DE892825C DEB3495D DEB0003495D DE892825C DE 892825 C DE892825 C DE 892825C DE B3495 D DEB3495 D DE B3495D DE B0003495 D DEB0003495 D DE B0003495D DE 892825 C DE892825 C DE 892825C
Authority
DE
Germany
Prior art keywords
mold
injection mold
molding compound
injection
injection molding
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
DEB3495D
Other languages
German (de)
Inventor
Ernst Bisterfeld
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEB3495D priority Critical patent/DE892825C/en
Application granted granted Critical
Publication of DE892825C publication Critical patent/DE892825C/en
Expired legal-status Critical Current

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds

Description

Die Erfindung betrifft eine Spritzgußform, in welche eine Spritzgußmasse unter Druck eingeführt werden kann, während sie bereits geschlossen ist. Um dies zu ermöglichen, ist die Spritzgußform so ausgebildet, daß zur Einführung einer Spritzgußmasse unter Druck in die durch einen Deckel schließbare Form in diesem ein gleichfalls schließbarer Kanal vorgesehen ist. The invention relates to an injection mold in which an injection molding compound can be inserted under pressure while it is already closed. To this To enable, the injection mold is designed so that for the introduction of an injection molding compound under pressure in the mold which can be closed by a lid in this likewise closable channel is provided.

Vorgeschlagen wurde bereits, zur Erzeugung des Preßdrucks zwei Formteile mit Hilfe von Schraubenflächen zusammenzufügen. Es ist jedoch unmöglich, auf diese Weise jede Preßform unter den gleichen Druck, der beispielsweise zwischen 2000 und 3000 atü liegen kann, zu setzen, während dies die Spritzgußform der Erfindung gestattet. It has already been proposed that two molded parts be used to generate the pressure join together with the help of screw surfaces. However, it is impossible on this Put each mold under the same pressure, for example between 2000 and 3000 atmospheres, while the injection mold of the invention allows.

Die Spritzgußmasse, beispielsweise aus Phenolformaldehyd, bleibt unter dem jeweils gewünschten Druck, bis sie ausgehärtet ist.The injection molding compound, for example made of phenol formaldehyde, remains under the desired pressure in each case until it has hardened.

In der Zeichnung ist ein Ausführungsbeispiel einer erfindungsgemäßen Spritzgußform dargestellt, bei welcher, wie bekannt, in einem Mantel ein Einsatz angeordnet ist. Der Mantel der Form ist in der Zeichnung mit a bezeichnet. In dem Mantel ist ein geteilter Einsatz b zur Aufnahme des eigentlichen Preßteiles c angeordnet. Die Form ist durch einen Deckel d mit Offnung e abgeschlossen, durch welche die Preßmasse eingeführt wird. Wenn das Einpressen beendet ist, wird die Öffnung in dem Deckel durch einen Schieber J od. dgl. verschlossen und dann das Werkstück nach unten oder oben aus der Presse herausgenommen. Dann kommt das Werkstück in den Trockenofen und bleibt dort so lange, bis die Spritzgußmasse ausgehärtet ist. Nach dem Aushärten wird die Form herausgenommen, geöffnet und der ausgehärtete Formkörper aus der Form genommen. Es kann auch ein Armierungsteil als Form verwandt werden, z. B. ein Stahlzylinder, der mit einer Kunststoffschicht im Innern ausgekleidet wird. In the drawing is an embodiment of an inventive Injection mold shown in which, as is known, an insert in a jacket is arranged. The shell of the mold is denoted by a in the drawing. By doing Sheath is a split insert b for receiving the actual pressed part c is arranged. The shape is completed by a lid d with opening e through which the Molding compound is introduced. When the press-fit is finished, the opening in the lid by a slider J or the like closed and then the workpiece after removed from the press at the bottom or at the top. Then the workpiece goes into the drying oven and remains there until the injection molding compound has hardened. After hardening the mold is removed, opened and the cured molded body out of the mold taken. A reinforcement part can also be used as a form, e.g. B. a steel cylinder, which is lined with a plastic layer inside.

Claims (1)

PATENTANSPRUCH: Spritzgußform, bestehend aus einem Mantel, in welchem Einsätze angeordnet werden können, dadurch gekennzeichnet, daß zur Einführung der Spritzmasse unter Druck in die durch einen Deckel (d) schließbare Form (alb) in diesem ein gleichfalls schließbarer Kanal (e) vorgesehen ist. PATENT CLAIM: Injection mold, consisting of a jacket in which Inserts can be arranged, characterized in that the introduction of the Injection molding compound under pressure into the mold (alb) that can be closed by a lid (d) in this a likewise closable channel (s) is provided. Angezogene Druckschriften: Deutsche Patentschriften Nr. I39 876, 559\ 6&3; - französische Patentschrift Nr. 758 o59; britische Patentschrift Nr. 9I49 vom Jahre I9OI; USA.-Patentschrift Nr. I 958 422. Attached publications: German patent specifications No. I39 876, 559 \ 6 &3; - French patent specification No. 758 059; British patent specification No. 9149 of the year 1901; U.S. Patent No. I 958 422.
DEB3495D 1942-02-14 1942-02-14 Injection mold Expired DE892825C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB3495D DE892825C (en) 1942-02-14 1942-02-14 Injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB3495D DE892825C (en) 1942-02-14 1942-02-14 Injection mold

Publications (1)

Publication Number Publication Date
DE892825C true DE892825C (en) 1953-10-12

Family

ID=6953234

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB3495D Expired DE892825C (en) 1942-02-14 1942-02-14 Injection mold

Country Status (1)

Country Link
DE (1) DE892825C (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE139876C (en) *
GB190109149A (en) * 1901-05-03 1902-03-20 Walter Cottrell Parkin Improvements in Pressing Material into Shape, and in the Construction of the Moulds and Pressing Boxes
DE559663C (en) * 1932-09-23 Mario Segre Press form for horn, hooves and similar plastic materials
FR758059A (en) * 1933-06-06 1934-01-10 Manufacturing process of compression molded objects
US1958422A (en) * 1930-09-01 1934-05-15 Gen Motors Corp Apparatus for molding plastic material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE139876C (en) *
DE559663C (en) * 1932-09-23 Mario Segre Press form for horn, hooves and similar plastic materials
GB190109149A (en) * 1901-05-03 1902-03-20 Walter Cottrell Parkin Improvements in Pressing Material into Shape, and in the Construction of the Moulds and Pressing Boxes
US1958422A (en) * 1930-09-01 1934-05-15 Gen Motors Corp Apparatus for molding plastic material
FR758059A (en) * 1933-06-06 1934-01-10 Manufacturing process of compression molded objects

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