Machine for welding a moving web of material by means of a movable welding tool
AssigneeKarl Heinz Steigler
InventorEhrhart Schulze
Life of this patent
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Abstract
An apparatus for welding a web of material which is being moved in its longitudinal direction is disclosed. The apparatus comprises a movable welding tool which welds along a line of contact against the periphery of a rotatable counter-roller, and a drive means which imparts rotary movement to the counter-roller and moves the welding tool periodically into its welding position. The apparatus further comprises a means for superimposing on the counter-roller rotation an additional rotation such that the point of weld contact on the counter-roller is distributed equally around the periphery of said roller.
Claims9
An apparatus for welding a web of material moving in its longitudinal direction comprising a movable welding tool which is adapted to press the web of material against the periphery of a rotatable counter-roller substantially along a contact line during welding, said apparatus further comprising a drive means for imparting a rotary movement to the counter-roller and simultaneously moving the welding tool periodically into its welding position in contact with the web of material, said drive means having a transmission means with an obliquely toothed engagement means for coupling said welding tool and said counter-roller, said engagement means adapted to be displaced within said transmission means by a displacement means for providing an additional rotation to the said counter-roller relative to said welding tool.
Dependencies are inferred from the claim text.