Process for removing the screw from the screw cylinder of a screw-type injection molding machine and a screw-type molding machine of correspondence configuration

US5020914A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Ernst Wurl · Laufenburg (Baden), DE
• Alfred Hafner · Fürth, DE
• Jurgen Paulsen · Nuremberg, DE
• Peter Marienfeld · Marklohe, DE
• Bruno Grogor · Leinburg, DE

Key dates

• Filing date: Jun 19, 1989
• Grant date: Jun 4, 1991
• Expiry date: Jun 19, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23P19/022
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A process for removing the screw from the screw cylinder of a screw-type injection molding machine and a screw-type injection molding machine of a corresponding configuration, having a base frame for receiving an injection unit which comprises a screw cylinder (1), a screw which is rotatable and axially displaceable in the screw cylinder and a drive device (2) for the screw, which is arranged axially behind the screw cylinder. The screw cylinder (1) is releasably connected to the drive device (2) and is pivotable, independently of the drive device (2), about a pivot axis (6) which extends vertically at a spacing in front of its rear end. The screw cylinder (1) and/or the drive device (2) are arranged to be movable separately from each other on the injection molding machine in the axial direction of the injection unit in order for the rear end of the screw to be pulled out of the drive device (2) after the connection has been released.