US 12,415,215 B2
Nip roller, pole piece flattening equipment and pole piece production system
Zhenguang Tang, Fujian (CN); and Hongwu Shang, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Feb. 13, 2023, as Appl. No. 18/108,714.
Claims priority of application No. 202220294456.3 (CN), filed on Feb. 14, 2022.
Prior Publication US 2023/0256488 A1, Aug. 17, 2023
Int. Cl. B21B 27/02 (2006.01)
CPC B21B 27/021 (2013.01) [B21B 2263/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A nip roller, comprising:
a roller body, wherein a side surface of the roller body is provided with a plurality of ridges protruding in a radial direction of the roller body, and extension directions of the plurality of ridges are all parallel to an axial direction of the roller body;
each ridge is provided with a first part and a second part which are sequentially arranged in the extension direction of the ridge, wherein a surface, away from an axis of the roller body, of the first part is provided with a first thread structure, a surface, away from an axis of the roller body, of the second part is provided with a second thread structure, and a rotation direction of the first thread structure is opposite to a rotation direction of the second thread structure;
the first thread structure on the first parts of the ridges are the same in rotation direction, and the second thread structure on the second parts of the ridges are the same in rotation direction; and
the plurality of ridges are sequentially arranged at intervals in a rotation direction of the roller body, a number of teeth of the first thread structure on the first parts located on the plurality of ridges sequentially arranged at intervals are sequentially increased, and a number of teeth of the second thread structure on the second parts located on the plurality of ridges sequentially arranged at intervals are sequentially increased.