US 12,341,146 B2
Apparatus and method for manufacturing rechargeable battery case
Su Young Seo, Cheonan-si (KR); Byeong Cheol Min, Cheonan-si (KR); and Jung Hun Min, Cheonan-si (KR)
Assigned to SANGSINEDP CO., LTD., Cheonan-si (KR)
Filed by SANGSINEDP CO., LTD., Cheonan-si (KR)
Filed on Sep. 27, 2024, as Appl. No. 18/898,699.
Application 18/898,699 is a continuation of application No. PCT/KR2023/007551, filed on Jun. 1, 2023.
Claims priority of application No. 10-2022-0071289 (KR), filed on Jun. 13, 2022.
Prior Publication US 2025/0023086 A1, Jan. 16, 2025
Int. Cl. B21D 22/21 (2006.01); B21D 28/14 (2006.01); B21D 28/18 (2006.01); H01M 10/04 (2006.01); B21D 45/02 (2006.01)
CPC H01M 10/0404 (2013.01) [B21D 22/21 (2013.01); B21D 28/14 (2013.01); B21D 28/18 (2013.01); B21D 45/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An apparatus for manufacturing a rechargeable battery case comprising:
a punch configured to press an object;
a die including an extrusion portion configured to extrude the object being pressed, the die being configured to be elastically deformed so that a width of the extrusion portion is increased when the punch presses the object such that the object enters the extrusion portion, and being configured to be elastically deformed so that the width of the extrusion portion is restored to an initial value when the punch continues to press the object such that the object secedes from the extrusion portion; and
a knockout unit configured to be raised or lowered through the extrusion portion of the die, to seat the object seated thereon, to raise or lower the object, and to raise the object when the punch and the object are separated from each other by interference of the object with the die,
wherein the die comprises:
a base portion having the extrusion portion formed to penetrate through the base portion in up and down directions;
a guide portion formed to be rounded on an upper side of a portion where the extrusion portion is located on the base portion and configured to guide the object to the extrusion portion; and
a catching portion formed to be inclined on a lower side of a portion where the extrusion portion is located on the base portion and configured to restrict the object from moving to the extrusion portion when an external force over a specific magnitude is not applied to the object in a state where the catching portion comes in contact with an upper end of the object.