Ultrasonic film splicer
AssigneeMetro/Kalvar Corporation
InventorWallace I. Vance, Jr.
Life of this patent
Estimating the term…
Abstract
The present invention is directed to an ultrasonic film splicer for ultrasonically bonding all conventional plastic film bases. The present splicer basically comprises film holding means for retaining the edges of two film strips to be spliced; film cutting means whereby the edges of the two film strips are severed in a mating relationship; film transport means for moving the film within an ultrasonic compression zone whereby the severed ends of the film are positioned in a fixed overlapped relationship ready for bonding; and ultrasonic bonding means comprising rotatably mounted anvil means and stationary narrow elongated transducer means which define the ultrasonic compression zone wherein the film strips to be spliced are positioned and oscillatory energy applied thereto by line contact by virtue of said bonding means.
Claims8
A film splicer comprising:
- ultrasonic energy generating means mounted in a fixed position and including a transducer having a horn portion provided with a narrow elongated working edge, said transducer when energized generating vibratory motion in the ultrasonic range at said horn portion;
- anvil means having a rotatably mounted circular member operably disposed opposite said working edge of the horn along its longitudinal axis for movement thereover in a spaced apart relationship to form a compression zone wherein film strips to be spliced across their widths may be fed into contact with the working edge of said horn portion and said circular anvil member;
- control means operably connected to said anvil means for controlling the rate of movement of said rotatably mounted circular member over said working edge;
- film cutting means operably positioned in proximity to the horn portion of said transducer;
- and
- two film block assemblies rotatably positioned in a substantially horizontal plane in spaced apart relationship on opposite sides of the arrangement of said film cutting means and said transducer, said assemblies including means for causing said assemblies to converge towards one another when the assemblies are rotated upwards and backwards from a position adjacent said cutting means to a position adjacent the working edge whereby film strips clamped in said film block assemblies and severed by said cutting means converge toward each other and cause the severed edges of the strips to overlap said working edge within the compression zone.
A film splicer comprising:
- ultrasonic energy generating means including a transducer having a horn portion provided with a narrow elongated working edge, said transducer when energized generating vibratory motion in the ultrasonic range at said horn portion;
- anvil means operably disposed opposite said working edge of the horn along its longitudinal axis is spaced apart relationship with said horn to form a compression zone wherein film strips to be spliced across their widths may be fed into contact with the working edge of said horn portion and said anvil member;
- means for selectively producing relative movement between the anvil and the working edge of said horn by an amount corresponding to differing widths of film strips to be spliced;
- film cutting means operably positioned in proximity to the horn portion of said transducer;
- and
- two film block assemblies rotatably positioned in a substantially horizontal plane in spaced apart relationship on opposite sides of the arrangement of said film cutting means and said transducer, said assemblies including means for causing said assemblies to converge towards one another when the assemblies are displaced from a position adjacent said cutting means to a position adjacent the working edge whereby film strips clamped in said film block assemblies and severed by said cutter means converge toward each other and cause the severed edges of the strips to overlap said working edge within the compression zone.
Dependencies are inferred from the claim text.