DE926879C - Injection molding machine for thermoplastics - Google Patents

Injection molding machine for thermoplastics

Info

Publication number
DE926879C
DE926879C DEB23291A DEB0023291A DE926879C DE 926879 C DE926879 C DE 926879C DE B23291 A DEB23291 A DE B23291A DE B0023291 A DEB0023291 A DE B0023291A DE 926879 C DE926879 C DE 926879C
Authority
DE
Germany
Prior art keywords
injection molding
molding machine
thermoplastics
screw
mass cylinder
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
DEB23291A
Other languages
German (de)
Inventor
Hans Dipl-Ing Beck
Wolfgang Dipl-Ing Landmann
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 DEB23291A priority Critical patent/DE926879C/en
Application granted granted Critical
Publication of DE926879C publication Critical patent/DE926879C/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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Das Hauptpatent 858 310 betrifft eine Spritzguß maschine für thermoplastische Kunststoffe, bei der die Erwärmung auf Fließtemperatur in einem mit einer Schnecke versehenen Massezylinder, das Ausspritzen durch Veränderung des Fülivolumens des Massezylinders bewirkt wird. The main patent 858 310 relates to an injection molding machine for thermoplastic Plastics in which the heating to flow temperature in one with a screw provided mass cylinder, the ejection by changing the filling volume of the Mass cylinder is effected.

Geimäß Unteransprüchen des Hauptpatents kann die Änderung des Füllvolumens durch Längsverschiebung der Schnecke, die über eine Keilnuteur büchse angetrieben wird, bewirkt werden. According to subclaims of the main patent, the change in the filling volume by longitudinal displacement of the screw, which is driven via a key nut will be effected.

Bei dieser bekannten; Spritzgußmaschine führt also die Schnecke eine drehende und eine axial hin und her gehende Bewegung aus. Die drehende Bewegung wird über Keilwelle I (Abb. I) eingeleitet, die hin und her gehende Bewegung im allgemeinen durch einen hydraulischen Antrieb 2. Wenn dieser z. B. hydraulische Antrieb, wie es üblich ist, nur eine hin und her gehende Bewegung ausführen soll, muß zwischen Keilwelle und hydraulischem Antrieb ein Axialdrucklager 3 eingebaut werden, das die Drehbewegung der Schnecke abfängt. Das Gehäuse des Axialdrucklagers macht die drehende-Bewegung der Schnecke nicht mit, sondern führt nur die durch den Kolben verursachte axiale Hinundherbewegung aus. In this well-known; Injection molding machine therefore leads the screw rotating and axially reciprocating motion. The rotating movement is initiated via splined shaft I (Fig. I), the reciprocating movement in the generally by a hydraulic drive 2. If this z. B. hydraulic Drive, as is customary, should only perform a reciprocating movement, A thrust bearing 3 must be installed between the spline shaft and the hydraulic drive that intercepts the rotation of the screw. The housing of the thrust bearing does not take part in the rotating movement of the screw, it only performs it caused the piston to reciprocate axially.

Das Axialdrucklager, das bei Drücken von IOOO kg/cm2 und mehr, wie sie beim Spritzvorgang auftreten, große Axialkräfte aufzunehmen hat und daher erhebliche Abmessungen erhalten muß, kann jedoch gemäß der Erfindung wegfallen, wenn man den Kolben des z. B. hydraulischen Antriebes 2 (Abb. 2) mit der Keilwelle I bzw. der Schnecke starr verbindet, so daß der Kolben ebenfalls rotiert. The thrust bearing, which at pressures of 10000 kg / cm2 and more, such as they occur during the injection process, have to absorb large axial forces and therefore considerable Must get dimensions, but can be omitted according to the invention if you Piston of z. B. hydraulic drive 2 (Fig. 2) with the splined shaft I or the The screw is rigidly connected so that the piston also rotates.

In diesem Falle führt also der Kolben eine roten runde Bewegung neben der hin und her gehenden Bewegung aus. Der Antrieb der Spritzgußmaschine wird einfacher und der Platzbedarf der Maschine geringer.In this case, the piston also makes a red round movement the back and forth movement. The drive of the injection molding machine becomes easier and the space required by the machine is lower.

Claims (1)

PATENTANSPRUCH: Spritzgußmaschine für thermoplastische Kunststoffe nach Patent 858 3IO, bei der die Erwärmung auf Fließtemperatur in einem mit einer Transportschuecke versehenen Massezylinder, das Ausspritzen durch Veränderung -des Füllvolumens des Massezylinders bewirkt wird, dadurch gekennzeichnet, daß die hin und her gehende und gleichzeitig rotierende Schnecke mit einem z. B. hydraulisch angetriebenen Druckkolben starr verbunden ist. PATENT CLAIM: Injection molding machine for thermoplastics according to patent 858 3IO, in which the heating to flow temperature in one with a Transport sluices provided mass cylinder, the ejection by changing the Filling volume of the mass cylinder is effected, characterized in that the out and her going and simultaneously rotating screw with a z. B. hydraulic driven pressure piston is rigidly connected.
DEB23291A 1952-12-11 1952-12-11 Injection molding machine for thermoplastics Expired DE926879C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB23291A DE926879C (en) 1952-12-11 1952-12-11 Injection molding machine for thermoplastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB23291A DE926879C (en) 1952-12-11 1952-12-11 Injection molding machine for thermoplastics

Publications (1)

Publication Number Publication Date
DE926879C true DE926879C (en) 1955-04-25

Family

ID=6961151

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB23291A Expired DE926879C (en) 1952-12-11 1952-12-11 Injection molding machine for thermoplastics

Country Status (1)

Country Link
DE (1) DE926879C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135161B (en) * 1955-06-24 1962-08-23 Roland Wucher Injection molding machine for processing thermoplastics
AT380826B (en) * 1982-01-28 1986-07-10 Mathes Guenther Ing INJECTION DEVICE FOR INJECTION MOLDING MACHINES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135161B (en) * 1955-06-24 1962-08-23 Roland Wucher Injection molding machine for processing thermoplastics
DE1136819B (en) * 1955-06-24 1962-09-20 Roland Wucher Injection molding machine for non-metallic plastic materials
AT380826B (en) * 1982-01-28 1986-07-10 Mathes Guenther Ing INJECTION DEVICE FOR INJECTION MOLDING MACHINES

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