Patent · US Active

Guide bushing for an injection moulding apparatus

US10766177B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

GÜNTHER Heisskanaltechnik GmbH · DE

Inventors

Herbert Gunther · Allendorf (Eder), DE
Siegrid Sommer · Frankenberg, Hesse, DE
Torsten Schnell · Lichtenfels, DE

Key dates

Filing date	Apr 11, 2017
Grant date	Sep 8, 2020
Priority date	—
Expiry date	Jan 17, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2045/2889
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Disclosed is a guide bushing for the guiding and sealing of a closing needle of a needle valve nozzle of an injection moulding apparatus, the guide bushing having a main part and a fastening element, wherein the main part has a through-opening for the closing needle, wherein the through-opening comprises at least one guiding portion, which encloses the closing needle with slight movement play, wherein the through-opening comprises at least two expansion portions, whose diameter in each case is larger than that of the at least one guiding portion. The guide bushing moreover comprises a fastening element, which is securable to the main part, wherein a seal element is arranged between the fastening element and the main part, bearing against the entire circumference of a closing needle inserted into the through-opening.

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