Deep-drawing apparatus, packaging machine having a deep-drawing apparatus and method for operating the deep-drawing apparatus

Patent metadata

Field	Value
Publication number	US-11643235-B2
Application number	US-202117190971-A
Country	US
Kind code	B2
Filing date	Mar 3, 2021
Priority date	Mar 6, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

The disclosure relates to a deep-drawing apparatus for deep-drawing a continuously fed film web, an associated packaging machine, and a corresponding method. A cyclically sequenced forming station, which runs along from a start position to an end position and runs back from there to the start position is provided, wherein individual format plates are sequentially firstly connected up to a forming vacuum device and then with a following holding vacuum channel. The forming vacuum device is part of the cyclically moved forming station. The holding vacuum channel includes two interlocking telescopic channel portions, a first telescopic channel portion being part of the cyclically moved forming station, and a second telescopic channel portion being mounted statically relative to the fixed machine frame.

First claim

What is claimed is:

1. A deep-drawing apparatus for deep-drawing a continuously fed film web, the deep-drawing apparatus comprising:
a conveyor configured to revolve continuously around a fixed machine frame;
said conveyor including a plurality of format plates;
said plurality of format plates having a number of mold impressions formed therein;
a cyclically sequenced forming station, which runs along with said conveyor from a start position to an end position and runs back from said end position to said start position;
a forming vacuum device;
a holding vacuum channel;
individual ones of said plurality of format plates being able to be sequentially connected first to said forming vacuum device and then with said holding vacuum channel;
said forming vacuum device being part of said cyclically sequenced forming station;
said holding vacuum channel having two interlocking telescopic channel portions including a first telescopic channel portion and a second telescopic channel portion;
said first telescopic channel portion being part of said cyclically sequenced forming station; and,
said second telescopic channel portion being mounted statically relative to the fixed machine frame.

2. The deep-drawing apparatus of claim 1 , wherein said forming station is configured to deep-draw the film web simultaneously into a plurality of successive format plates of a plate set; and, said forming vacuum device includes a number of forming vacuum channels that corresponds to a number of said format plates of a plate set, individual ones of said forming vacuum channels being connected to individual ones of said format plates located in said forming station and being able to have a vacuum applied thereto independently of one another.

3. The deep-drawing apparatus of claim 1 , wherein said first interlocking telescopic channel portion and said second interlocking telescopic channel portion have an upwardly open side; and, said format plates disposed above said open side being connected via lower pressure openings to said open side of said first and second telescopic channel portions.

4. The deep-drawing apparatus of claim 1 , wherein said forming vacuum device and said holding vacuum channel can be subjected to a different vacuum level.

5. A packaging machine for producing filled bags, the packaging machine comprising:
a deep-drawing apparatus for deep-drawing a continuously fed film web;
said deep-drawing apparatus including a conveyor, a cyclically sequenced forming station, a forming vacuum device, and a holding vacuum channel;
said conveyor configured to revolve continuously around a fixed machine frame;
said conveyor including a plurality of format plates;
said format plates having mold impressions formed therein;
said cyclically sequenced forming station running along with said conveyor from a start position to an end position and running back from said end position to said start position;
individual ones of said plurality of format plates being able to be sequentially connected first to said forming vacuum device and then to said holding vacuum channel;
said forming vacuum device being part of said cyclically sequenced forming station;
said holding vacuum channel includes a first telescopic channel portion and a second telescopic channel portion;
said first telescopic channel portion being part of said cyclically sequenced forming station;
said second telescopic channel portion being mounted statically relative to the fixed machine frame; and,
a subsequent processing station.

6. The packaging machine of claim 5 , wherein said second telescopic channel portion extends up to said subsequent processing station which follows said forming station.

7. The packaging machine of claim 6 , wherein said subsequent processing stations following said deep-drawing apparatus includes a filling station and a sealing station; and, wherein said second telescopic channel portion extends at least up to said sealing station.

Assignees

• Hoefliger Harro Verpackung

Inventors

• Egelkraut Udo
• Schneider Jan
• Thienst Andreas

Classifications

• B65B3/04

  Methods of, or means for, filling the material into the containers or receptacles · CPC title

• B29L2031/7128

  Bags, sacks, sachets (tea bags B29L2031/7122; medical bags B29L2031/7148) · CPC title

• B29C51/24

  mounted on movable endless supports · CPC title

• B29C51/261

  Handling means, e.g. transfer means, feeding means (B29C51/44 takes precedence) · CPC title

• B65B61/00

  Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages · CPC title