Patent · US Active

Deep-drawing apparatus and method for the deep-drawing of foil

US11186029B2 · kind B2 · utility

3Cited by

2References

9Claims

0Family size

Assignee

Harro Hoefliger Verpackungsmaschinen GmbH · DE

Inventors

Andreas Thaler · Allmersbach im Tal, DE
Udo Egelkraut · Allmersbach im Tal, DE

Key dates

Filing date	Aug 21, 2019
Grant date	Nov 30, 2021
Priority date	—
Expiry date	Feb 25, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2029/04
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A deep-drawing apparatus includes an arrangement of die plates, wherein each die plate has a plurality of frame vacuum holes and at least one female die having at least one die vacuum hole. At least one vacuum channel connects a vacuum source to the die vacuum hole of the female die and to the frame vacuum holes of the die plate. The deep-drawing apparatus includes for each die plate a closing device for closing and opening the vacuum channel. The die plate is fed a single foil sheet. The closing device opens the connecting channel at the corresponding die plate and the foil sheet is laid onto the die plate. Thereafter, the foil is held on the frame vacuum holes by a holding vacuum and is deep-drawn by a deep-drawing vacuum at the die vacuum holes in the female die. A method for the deep-drawing of foil is also disclosed.

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