US 12,030,098 B2
Multistage rolling mill
Takashi Norikura, Tokyo (JP); and Tadashi Tamagawa, Tokyo (JP)
Assigned to SENDZIMIR JAPAN, LTD., Tokyo (JP)
Appl. No. 17/774,209
Filed by SENDZIMIR JAPAN, LTD., Tokyo (JP)
PCT Filed Jan. 21, 2021, PCT No. PCT/JP2021/001937
§ 371(c)(1), (2) Date May 4, 2022,
PCT Pub. No. WO2021/149747, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-008018 (JP), filed on Jan. 22, 2020.
Prior Publication US 2022/0379358 A1, Dec. 1, 2022
Int. Cl. B21B 13/14 (2006.01)
CPC B21B 13/147 (2013.01) 10 Claims
OG exemplary drawing
 
1. A cluster multistage rolling mill comprising:
a pair of upper and lower work rolls that roll a metal strip;
an intermediate roll group that supports the work rolls;
a plurality of partition backing bearing shafts each including a partition backing bearing, a shaft, and a saddle that support the intermediate roll group;
an upper mill housing that supports an upper side partition backing bearing shafts in a vertical direction, of the partition backing bearing shafts;
a lower mill housing that supports a lower side partition backing bearing shafts in the vertical direction, of the partition backing bearing shafts;
a base mill housing disposed on a lower side of the lower mill housing in the vertical direction;
four columns that link, in an up-down direction, four corners of each of the upper mill housing, the lower mill housing, and the base mill housing;
a press-down section that is provided on an upper side of the four columns in the vertical direction and that is capable of raising and lowering the upper mill housing; and
a lower mill housing spacer that is provided between the lower mill housing and the base mill housing and that adjusts a position of the lower mill housing in the vertical direction.