US 12,409,509 B2
Ultrasonic welding apparatus including rotatable anvil and welding method using the same
Ho June Chi, Daejeon (KR); Hang June Choi, Daejeon (KR); Jeong Oh Moon, Daejeon (KR); and Jin Yong Park, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/923,699
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Oct. 15, 2021, PCT No. PCT/KR2021/014297
§ 371(c)(1), (2) Date Nov. 7, 2022,
PCT Pub. No. WO2022/086061, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 10-2020-0137617 (KR), filed on Oct. 22, 2020.
Prior Publication US 2023/0166349 A1, Jun. 1, 2023
Int. Cl. B23K 20/00 (2006.01); B23K 20/10 (2006.01); B23K 101/36 (2006.01)
CPC B23K 20/106 (2013.01) [B23K 2101/36 (2018.08)] 10 Claims
OG exemplary drawing
 
1. An ultrasonic welding apparatus comprising:
a horn unit including a horn
wherein the horn is configured to contact a target to be welded, the horn including at least one protrusion extending from a surface of the horn configured to contact the target to be welded,
and a vibrator configured to apply vibration to the horn;
an anvil unit including:
an anvil having a first flat surface on which the target to be welded is configured to be placed, and
a support portion configured to support the anvil in a rotatable state; and
a welding main body configured to have the horn unit and the anvil unit fixed thereto, wherein
the anvil is not fixed to the support portion,
the anvil is rotated in a state of being supported by the support portion such that the first flat surface of the anvil is parallel to a welding surface of the horn,
the anvil has a three-dimensional structure in which a section provided at a first part of the anvil becomes the first flat surface, and
a fixing shaft of the support portion extends through the anvil so as to be fixed to the welding main body, wherein a first end of the fixing shaft is coupled to the anvil and a second end of the fixing shaft opposite the first end is coupled to the welding main body.