Thermally assisted ultrasonic welding apparatus and process

Details Thermally assisted ultrasonic welding apparatus and process Thermally assisted ultrasonic welding apparatus and process

1983-04-12

1985-07-16

Ramsey, Kenneth J.

Metal fusion bonding

Means to apply vibratory solid-state bonding energy to work

1565801, B23K 2010

Patent

active

045291152

ABSTRACT:
Method and apparatus are provided for use in an ultrasonic vibratory welder for pre-heating the workpieces prior to welding and, thereafter, for continuously monitoring the temperature of the anvil and of the welding tip during subsequent welding operations to insure their temperature remains within a pre-determined range during the entire welding cycle. It has been found that weld characteristics, particularly weld size, shape, configuration and strength are dependent upon the temperature of the anvil and welding tip. Thermostatically controlled resistance heating means are provided in the anvil and/or in the welding tip for pre-heating of the workpieces. Automatic control means, are also provided for alternately heating and cooling the anvil and welding tip during the welding cycle.

REFERENCES:
patent: 2985954 (1961-05-01), Jones et al.
patent: 3438428 (1969-04-01), Balamuth et al.
patent: 3908886 (1975-09-01), Raske
patent: 3924791 (1975-12-01), Shimizu
patent: 4426244 (1984-01-01), Wang
patent: 4490199 (1984-12-01), Dunning

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