Ultrasonic weld location mask and method of use
First Claim
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1. An apparatus for automatic placement and ultrasonic welding of a metal workpiece to a recipient metal backing, comprising:
- weld location mask means having a totally bounded aperture of finite dimension extending therethrough for positioning and laterally confining the metal workpiece against the recipient metal backing;
said mask means having means to guide said metal workpiece into said aperture and to position the metal workpiece at a predetermined location on the recipient metal backing; and
means for inserting an ultrasonic welding tip through one end of said aperture to hold and weld said disc to said metal backing.
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Abstract
Apparatus for the automated feeding, placement and ultrasonic welding of a metal disc, such as a copper heatsink, to a recipient workpiece. A metal disc is automatically fed through the broader end of a chamfered bore cut in a weld location mask. The metal disc is gravity-fed to the narrower end of the bore as the weld location mask is automatically positioned over a recipient workpiece. An ultrasonic welding tip is inserted through the bore to hold the metal disc against the recipient workpiece. Welding of the disc to the recipient workpiece is accomplished by ultrasonically vibrating the tip.
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Citations
7 Claims
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1. An apparatus for automatic placement and ultrasonic welding of a metal workpiece to a recipient metal backing, comprising:
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weld location mask means having a totally bounded aperture of finite dimension extending therethrough for positioning and laterally confining the metal workpiece against the recipient metal backing; said mask means having means to guide said metal workpiece into said aperture and to position the metal workpiece at a predetermined location on the recipient metal backing; and means for inserting an ultrasonic welding tip through one end of said aperture to hold and weld said disc to said metal backing. - View Dependent Claims (2, 3)
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4. The process for placing and ultrasonically welding a metal article to a recipient metal backing, comprising the steps of:
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positioning a weld location mask with a totally bounded bore of finite dimension extending therethrough against the recipient metal backing; guiding the metal article into the bore of said mask; confining the metal article laterally in said bore; positioning the metal article at a predetermined location on the recipient metal backing; inserting an ultrasonic welding tip through one end of said bore of said weld location mask; holding said metal article against said recipient metal backing with said ultrasonic welding tip; and welding said metal article to said recipient metal backing by ultrasonically vibrating said ultrasonic welding tip. - View Dependent Claims (5, 6, 7)
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Specification