Apparatus to actuate injection element

US6413465B1 · kind B1 · utility

Assignee

• Battenfeld GmbH · DE

Inventors

• Reinhard Gruber · Hammelburg, DE
• Harald Bleier · Neustadt, AT
• Martin Ganz

Key dates

• Filing date: Apr 14, 1999
• Grant date: Jul 2, 2002
• Expiry date: Apr 14, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C2045/502
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus to actuate an injection element (1) for injecting a defined quantity of plasticized plastic or the like into an injection molding tool. The injection element (1) is designed as a piston or as a screw and is guided in a guide (2) and moved by an actuation element. The actuation element (3) has a tappet (4), which is guided on a crank plate (5), the crank plate (5) being turned with positional accuracy by a controlled or regulated servomotor (6). The invention provides that, for the return stroke of the injection element (1), a second tappet (7) is present, which is actuated by a second crank plate (8).