Converter for an ultrasonic welding device having increased arc resistance
AssigneeBranson Ultrasonics Corporation
InventorsScott Caldwell, John Maneca, Eugene D. Pollastro
Life of this patent
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Abstract
A converter for an ultrasonic welder includes a stack of piezoelectric disks alternately stacked with metal conductor disks in between. A pair of driver plates are disposed on opposite ends of the stack of piezoelectric disks. The piezoelectric disks include an outer perimeter surface that extends radially outward beyond the metal conductor disks. The outer perimeter surface of the piezoelectric disks can include an undulating surface.
Claims18
A converter for an ultrasonic welder, comprising:
- a stack of piezoelectric disks alternately stacked with metal conductor disks in between;
- a pair of driver plates disposed on opposite ends of the stack of piezoelectric disks;
- wherein the stack of piezoelectric disks include an undulating outer perimeter surface in a stacking direction of the piezoelectric disks.
A converter for an ultrasonic welder, comprising:
- at least one piezoelectric disk;
- a pair of driver plates disposed on opposite ends of the at least one piezoelectric disk;
- wherein the at least one piezoelectric disk includes an outer perimeter surface with an arc length that is greater than a thickness of the at least one piezoelectric disk.
A method of assembling a converter for an ultrasonic welder comprises:
- placing at least one piezoelectric disk between a first driver plate and a second driver plate and all within a jig, the at least one piezoelectric disk having at least one hole;
- applying a liquid insulating coating inside the at least one hole of the at least one piezoelectric disk while the at least one piezoelectric disk and the first driver plate and the second driver plate are held secure by the jig;
- and
- inserting a bolt through a hole in the first driver plate, the hole in the at least one piezoelectric disk and tightening the bolt into a threaded hole in the second driver plate to create an assembled converter, wherein the at least one piezoelectric disk has an outer perimeter surface with an arc length between the metal conductor disks that is greater than a thickness of the at least one piezoelectric disk.
Dependencies are inferred from the claim text.