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US 2023/0398747 A1Published application
Apparatus and method for ultrasonic welding
AssigneeZuiko Corporation
InventorsTakashi ARIMA, Masato HIROYASU
Life of this patent
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Abstract
A control is performed to drive a horn via an ultrasonic wave generator so as to apply ultrasonic energy to a web in one of an outward path and a return path of an anvil and not to apply ultrasonic energy to the web in the other one of the outward path and the return path.
Claims20
An ultrasonic welding device, comprising:
- a conveying drum that conveys a web along an outer circumferential surface while rotating;
- at least one horn that is arranged on one of an inner side and an outer side in a radial direction of the conveying drum relative to the outer circumferential surface, the horn rotating together with the conveying drum;
- at least one anvil that is arranged on another one of the inner side and the outer side in the radial direction of the conveying drum relative to the outer circumferential surface, the anvil rotating together with the conveying drum;
- a moving mechanism that reciprocates the anvil in an axis direction of the conveying drum as the conveying drum rotates so as to hold the web W between the anvil and the horn in an outward path and a return path of the anvil;
- an ultrasonic wave generator that vibrates the horn to apply ultrasonic energy to the web sandwiched between the anvil and the horn;
- and
- a control unit that performs a control of vibrating the horn via the ultrasonic wave generator so as to apply ultrasonic energy to the web in one of the outward path and the return path and not to apply ultrasonic energy to the web in another one of the outward path and the return path.
4 more elements
An ultrasonic welding method of welding a web by means of an ultrasonic welding device, the ultrasonic welding device comprising:
- a conveying drum that conveys the web along an outer circumferential surface while rotating;
- at least one horn that is arranged on one of an inner side and an outer side in a radial direction of the conveying drum relative to the outer circumferential surface, the horn rotating together with the conveying drum;
- and
- at least one anvil that is arranged on another one of the inner side and the outer side in the radial direction of the conveying drum relative to the outer circumferential surface, the anvil rotating together with the conveying drum;
- the ultrasonic welding method comprising:
- a step of conveying the web by the conveying drum;
- a step of reciprocating the anvil in an axis direction of the conveying drum as the conveying drum rotates so as to hold the web between the anvil and the horn in an outward path and a return path of the anvil;
- a step of vibrating the horn to apply ultrasonic energy to the web sandwiched between the anvil and the horn;
- and
- a step of controlling vibration of the horn via an ultrasonic wave generator so as to apply ultrasonic energy to the web in one of the outward path and the return path and not to apply ultrasonic energy to the web in another one of the outward path and the return path.
7 more elements
Dependencies are inferred from the claim text.