Patent · US Expired

Injection unit for an injection moulding machine

US7033158B2 · kind B2 · utility

6Cited by

2References

14Claims

0Family size

Assignee

MANNESMANN PLASTICS MACHINERY GMBH · DE

Inventors

Klaus Becker · Wetter, DE
Ralf Meyer · Büttelborn, DE
Robert Weinmann · Laguna Hills, US

Key dates

Filing date	Dec 3, 2001
Grant date	Apr 25, 2006
Priority date	—
Expiry date	May 19, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2045/5024
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An injection screw is rotationally driven by a rotating motor having a stator and a rotor and can be moved by a number of electrical linear motors, linear motor comprising a primary part, which functions as a stator, and a secondary part, which is linearly movable in the axial direction in a screw cylinder to execute the injection function. The primary parts are assembled to form a first housing-like unit and the secondary parts are assembled to form a second housing-like unit which is coupled to the screw for drive purposes. The rotating motor, fixedly connected to the screw in the axial direction, is arranged with its stator fixedly coupled in the axial direction to the secondary housing-like unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.