Device in a filling machine
AssigneeTetra Laval Holdings & Finance S.A.
InventorsNiklas TEGMAN, Göran HERMODSSON, Tobias WEGBRANT, Mattias DARMELL, Johnny MÅNSSON
Life of this patent
Estimating the term…
Abstract
The present invention relates to a knife for a sealing jaw arrangement of a filling machine, the knife in use being provided in a first member, and designed to cooperate with a groove of a second member. The knife further has a body being provided with a cutting edge on one side thereof, the body further comprising a guide. The guide is configured to enter the groove for controlling a movement, in use, of the cutting edge into the groove, and the guide is configured to enter the groove before the cutting edge enters the groove. The invention further relates to a sealing jaw assembly having such a knife.
Claims20
Knife for a sealing jaw arrangement of a filling machine, said knife in use being provided in a first member, and designed to cooperate with a groove of a second member, the knife having a body being provided with a cutting edge on one side thereof configured to cut through a packaging material, said body further comprising a guide, said guide being configured to enter the groove for controlling a movement of the cutting edge into the groove, the guide being configured to enter the groove before the cutting edge enters the groove.
A knife configured to be mounted in a first jaw which cooperates with a second jaw that includes a groove, one of the first and second jaws being a heating jaw so that cooperation between the first and second jaws produces a sealed zone in packaging material which is subsequently cut by the knife, the knife comprising:
- a plate possessing an oblong rectangular shape;
- the plate including front and back sides at oppositely positioned relatively longer sides of the oblong rectangular shape, the plate also including left and right sides at oppositely positioned relatively shorter sides of the oblong rectangular shape;
- the front side of the plate including a cutting edge and two guides, the cutting edge being positioned between the two guides, the cutting edge and the guides projecting in a forward direction away from the back side of the plate;
- the knife being configured to be mounted for reciprocating movement in the first jaw so that the knife:
- i) moves towards the second jaw while the sealed zone of the packaging material is positioned between the first and second jaws;
- ii) cuts the sealed zone in the packaging material;
- iii) enters the groove in the second jaw;
- and then iv) moves away from the second jaw;
- and
- the guides projecting further in the forward direction than the cutting edge so that the guides enter the groove in the second jaw before the cutting edge enters the groove to control movement of the cutting edge into the groove.
A sealing jaw assembly comprising:
- first and second jaws, the second jaw including a groove;
- one of the first and second jaws being a pressure jaw and the other of the first and second jaws being a heating jaw, the first and second jaws being relatively movable towards one another while packaging material is positioned between the first and second jaws to produce a sealed zone in the packaging material;
- a knife mounted for reciprocating movement in the first jaw to move toward the groove in the second jaw while the sealed zone of the packaging material is positioned between the first and second jaws to cut the sealed zone;
- the knife comprising:
- a plate possessing an oblong rectangular shape;
- the plate including front and back sides at oppositely positioned relatively longer sides of the oblong rectangular shape, the plate also including left and right sides at oppositely positioned relatively shorter sides of the oblong rectangular shape;
- the front side of the plate including a cutting edge and two guides, the cutting edge being positioned between the two guides, the cutting edge and the guides projecting in a forward direction away from the back side of the plate;
- and
- the guides projecting further in the forward direction than the cutting edge so that the guides enter the groove in the second jaw before the cutting edge enters the groove to control movement of the cutting edge into the groove.
Dependencies are inferred from the claim text.