Patent · US Expired

Injection moulding machine

US7458794B2 · kind B2 · utility

32Cited by

7References

12Claims

0Family size

Assignees

WEBASTO AG · DE
Franz J. Summerer · DE

Inventors

Ralf Schwaighofer · Neubeuern, DE
Andreas Lang · Ettringen, DE
Franz Summerer · Rimsting, DE

Key dates

Filing date	Aug 4, 2005
Grant date	Dec 2, 2008
Priority date	—
Expiry date	Aug 4, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7782
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An injection molding machine is proposed, especially for injection stamping of large-area plastic moldings, that has at least a first injection mold which has two mold halves and which forms a first cavity with a first projected area, and a second injection which has two mold halves and which forms a second cavity with a second projected area, one mold half of each of the two injection molds being fixed on a common carrier unit. A support means for the two injection molds acts in the opening direction. In order to limit the force acting on the respective cavity, the support means, depending on the respective projected area of the respective cavity, partially take up the clamping force so that a holding pressure force acting on the material which has been injected into the respective cavity is set.

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