Thermo-forming packaging machine with true-to-cycle positioning of a sealing station
AssigneeMultivac Sepp HaggenmüLler SE & Co. KG
InventorsElmar Ehrmann, Christian Lau
Life of this patent
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Abstract
The invention relates to a thermo-forming packaging machine and a method which are characterized in that the location of trays in a base film upstream of a sealing station is detected by a measuring system and that the sealing station is immediately subsequently positioned such as to allow a top film to be sealed with highest accuracy matching the tray and thereby to be able to compensate for irregularities and tolerances, for example, in the film feed, in a true-to-cycle manner.
Claims26
Thermo-forming packaging machine comprising:
- a forming station for forming trays into a base film;
- a device for introducing a reference element into said base film;
- a sealing station including an adjustment device for adjusting the position of said sealing station along a direction of production and a displacement measuring device;
- a measuring system at said sealing station or within a feed length upstream of said sealing station for determining the position of said reference element;
- and
- a control unit configured to control the position of said sealing station according to the detected location of said reference element relative to said trays using said adjustment device;
- wherein said thermo-forming packaging machine is adapted to be operated intermittently with the feed length for every work cycle.
Method for operating a thermo-forming packaging machine including a forming station for forming trays into a base film, a sealing station, and a control unit, said method comprising the steps of:
- introducing a reference element into said base film;
- determining the location of said reference element by a measuring system;
- and
- positioning said sealing station in a predetermined position relative to said reference element using an adjustment device.
Thermo-forming packaging machine comprising:
- a forming station for forming trays into a base film;
- a sealing station including an adjustment device for adjusting the position of said sealing station along a direction of production and a displacement measuring device;
- a measuring system located within one feed length upstream of said sealing station for determining the location of said trays being supplied to said sealing station in the direction of production during a following work cycle;
- and
- a control unit configured to control the position of said sealing station according to the determined location of said trays in a true-to-cycle manner in its position relative to said trays using said adjustment device;
- wherein said thermo-forming packaging machine is adapted to be operated intermittently with a feed length for every work cycle.
Method for operating a thermo-forming packaging machine including a forming station for forming trays into a base film, a sealing station, and a control unit, said method comprising the steps of:
- determining the location of the trays in one work cycle by a measuring system;
- supplying said trays to said sealing station during a following work cycle;
- and
- positioning said sealing station in a true-to-cycle manner relative to said trays using an adjustment device.
Dependencies are inferred from the claim text.