Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1984-05-29
1985-11-19
Wityshyn, Michael
Package making
Progressively seamed cover web or web folds
With closing of web between package units
53550, 53373, 156553, 1565831, 493193, 493205, 493206, B65B 912, B65B 5130
Patent
active
045533776
ABSTRACT:
For producing transverse seams on tube bag machines, two conjointly, oppositely moving sealing tool jaws (15, 16) are provided, which are movable on a carriage (6) during the sealing process.
For driving the sealing tool and selecting an appropriate stroke length, the frame (5) on which the carriage (6) rests is movable up and down by a pair of coupled cam-actuated levers (19). The axes of rotation (34) of two levers (19), and thus the distances travelled by their uncoupled, flapping ends, are adjustable along the lengths of the levers. This is accomplished by turning a spindle (3) bearing oppositely wound screw threads, which sets adjustment bodies (30) with sliding blocks (4) for the two-armed levers (19).
Thus, packages of varying heights can be efficiently sealed, since the sealing mechanism always seals in the middle of the package height, regardless of stroke length selected.
REFERENCES:
patent: 2944469 (1960-07-01), Heinzer
patent: 3884129 (1975-05-01), Monohan
patent: 3992981 (1976-11-01), Stock
patent: 4019307 (1977-04-01), Ballestazzi et al.
patent: 4063400 (1977-12-01), Millevoi
patent: 4460431 (1984-07-01), Keller et al.
patent: 4483126 (1984-11-01), Henry
Eurobreva Engineering Trust
Wityshyn Michael
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