Ultrasonic welding device and method, and a magnetic tape cartri

Details Ultrasonic welding device and method, and a magnetic tape cartri Ultrasonic welding device and method, and a magnetic tape cartri

1998-06-18

2000-11-28

Ryan, Patrick

Metal fusion bonding

Process

With condition responsive, program, or timing control

228103, 2281101, B23K 106, B23K 520, B23K 2010, B23K 3112

Patent

active

06152350&

ABSTRACT:
It is an object of the invention to provide a method and a device which can manufacture, by ultrasonic welding, a reel for use in a magnetic tape cartridge with an improved yield rate, while not only restricting the deformation of workpieces but also preventing the products from varying in quality. At least one of the amplitude of an oscillator power source 80 and pressure to be applied to workpieces in an ultrasonic welding operation are set high in the early stage of the ultrasonic welding operation and are then switched into lower levels in the middle of the ultrasonic welding operation when the workpieces, that is, upper and lower reels 4 and 5, begin to melt together.

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