Device to remove working rolls in a four-high rolling stand

Details Device to remove working rolls in a four-high rolling stand Device to remove working rolls in a four-high rolling stand

1999-04-19

2000-03-21

Butler, Rodney A.

Metal deforming

By use of roller or roller-like tool-element

With carrier for roller-couple or tool-couple

B21B 3107, B21B 3108

Patent

active

060389052

ABSTRACT:
Device to remove working rolls in a four-high rolling stand includes an upper working roll (11a) and a lower working roll (11b), associated with respective supporting chocks (12a, 12b), and relative back-up rolls, upper (13a) and lower (13b), associated with respective supporting chocks (14a, 14b). At least the chocks (14b) of the lower back-up roll (13b) laterally and partly contain the chocks (12b) of the lower working roll (11b). A pair of sliding rails (15) are mounted on board the chocks (14b) of the lower back-up roll (13b) and are movable vertically with respect thereto, the rails (15) including a first lowered, or inactive position, and a second raised, or working position, associated with the chocks (12b) of the lower working roll (11b) the chocks (12b) are associated at the lower part with relative sliders (21) suitable to cooperate with the rails (15) located in the raised positions. Actuators (23) to lift the rails are arranged in cooperation with the lower plane of the rolling stand (10) and are contained inside the space of the chocks (14b) of the lower back-up roll (13b), the actuators (23) being connected to the relative rails (15) by respective extension rods (16) arranged on the axial extension of the actuators (23).

REFERENCES:
patent: 3638467 (1972-02-01), Fujino
patent: 3754426 (1973-08-01), Adair
patent: 3866455 (1975-02-01), Petros
patent: 3869898 (1975-03-01), Quehen
patent: 4771626 (1988-09-01), Ichida et al.

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