Ultrasonic cutting device and ultrasonic cutting method

Abstract

The invention relates to the technical field of ultrasonic waves, and discloses an ultrasonic cutting device and an ultrasonic cutting method. The ultrasonic cutting device comprises an ultrasonic cutting knife, a first transducer, a second transducer, a first amplitude modulator and a second amplitude modulator; the ultrasonic cutting knife is used for cutting a workpiece; the first transducer is connected onto the ultrasonic cutting knife, and is used for driving the ultrasonic cutting knife to vibrate. the second transducer is connected onto the ultrasonic cutting knife, and is used for driving the ultrasonic cutting knife to vibrate; the second transducer and the first transducer are in-phase and are located at the same side of the ultrasonic cutting knife; the first amplitude modulator is used for adjusting the output amplitude of the first transducer; and the second amplitude modulator is used for adjusting the output amplitude of the second transducer. The ultrasonic cutting device is small in cutting resistance, long in service life, high in speed and stable in quality; no flashes, burrs or metal dust is not generated; no damage is brought to the surface appearance of the workpiece; a wider pole piece can be cut; and energy output of the double transducers is stable.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to an ultrasonic cutting device and an ultrasonic cutting method. Background technique [0002] At present, in the lithium battery production process, it is generally necessary to perform consistency treatment on the battery, including shaping, cutting, etc. Generally, mechanical blades are used to cut the positive and negative battery pole pieces. Whether it is a dozen layers or hundreds of layers of metal foil, high-hardness die steel or even tungsten steel blades are used for head-to-head mechanical cutting. [0003] As the energy density of lithium batteries is getting higher and higher, the requirements for battery safety have also increased accordingly. The traditional way of cutting by mechanical shearing is easy to cause flashes and burrs, and it is easy to produce metal dust. The dust will cause the battery to short-circuit and catch fire, which is a great safety hazar...

AI Technical Summary

Problems solved by technology

The traditional way of cutting by mechanical cutting is easy to cause flashes and burrs, and it is easy to produce metal dust. The dust will cause the battery to short-circuit and catch fire, which is a great safety hazard.

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