US 12,434,325 B2
Welding pressure control system, welding pressure control method using the same, and welding subject thickness measuring method using the same
Seong Jin Kim, Daejeon (KR); and Jeong Yeon Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/567,165
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Oct. 20, 2022, PCT No. PCT/KR2022/016045
§ 371(c)(1), (2) Date Dec. 5, 2023,
PCT Pub. No. WO2023/068844, PCT Pub. Date Apr. 27, 2023.
Claims priority of application No. 10-2021-0141422 (KR), filed on Oct. 21, 2021.
Prior Publication US 2024/0269766 A1, Aug. 15, 2024
Int. Cl. B23K 20/00 (2006.01); B23K 20/10 (2006.01); B23K 20/26 (2006.01); B23K 101/36 (2006.01)
CPC B23K 20/106 (2013.01) [B23K 20/002 (2013.01); B23K 20/26 (2013.01); B23K 2101/36 (2018.08)] 13 Claims
OG exemplary drawing
 
1. A welding pressure control system comprising:
an anvil on which a welding subject is supported;
a horn provided to face the anvil and configured to press the welding subject;
an elevating unit configured to support the horn, the elevating unit being operable to cause the horn to ascend and descend;
a sensing unit configured to sense a pressure value that varies depending on the ascent or the descent of the horn; and
a control unit configured to control operation of the elevating unit based on the pressure value obtained from the sensing unit,
wherein the elevating unit comprises:
a motor,
a screw configured to receive driving power from a rotary axis of the motor and rotate,
a vertically movable part rotatably coupled to the screw and configured to move vertically by the rotation of the screw, and
a support coupled to the vertically movable part and configured to support the horn,
wherein the sensing unit surrounds the screw such that the screw is rotatable and is pressed according to the vertical movement of the vertically movable part.