US 12,434,288 B2
Apparatus for roll stamping
Don-Gun Kim, Incheon (KR); and Myung-Hwan Cha, Incheon (KR)
Assigned to POSCO CO., LTD, Pohang-si (KR)
Appl. No. 18/025,259
Filed by POSCO Co., Ltd, Pohang-si (KR)
PCT Filed Aug. 27, 2021, PCT No. PCT/KR2021/011489
§ 371(c)(1), (2) Date Mar. 8, 2023,
PCT Pub. No. WO2022/059963, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 10-2020-0119876 (KR), filed on Sep. 17, 2020.
Prior Publication US 2023/0321711 A1, Oct. 12, 2023
Int. Cl. B21D 22/08 (2006.01); B21D 5/08 (2006.01); B21D 37/10 (2006.01)
CPC B21D 22/08 (2013.01) [B21D 5/08 (2013.01); B21D 5/083 (2013.01); B21D 37/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for roll stamping, the apparatus comprising:
an inclined roll set including a first rotation roll and a second rotation roll rotating while facing each other, wherein each of the first rotation roll and the second rotation roll having a fixed position and an angle inclined with respect to a traveling direction of a material,
wherein a first forming portion for forming the material is formed on an outer surface of the first rotation roll,
the first forming portion includes a first circumferential groove portion inclined at an oblique angle rather than a right angle with respect to a rotation shaft of the first rotation roll,
a second forming portion for forming the material is formed on an outer surface of the second rotation roll,
the second forming portion includes a first circumferential protrusion part inclined at an oblique angle rather than a right angle with respect to a rotation shaft of the second rotation roll, and
the first forming portion and the second forming portion have shapes corresponding to each other and registering with each other,
the inclined roll sets are arranged in plural at predetermined intervals from each other in the traveling direction of the material,
wherein in a case in which a number of inclined roll sets is plural, the inclined roll sets are arranged in such a way as to be misaligned on opposite sides based on a center of the material in a width direction in such a way as not to interfere with each other.