Patent ID: 6460390
Filing Date: 2002-10-08
Classification: B21B

Abstract:
A rolling-mill stand which comprises, in combination, at least two rolls (15) supported by mounts (16,17) having adjustment and blocking tie rods (18, 19), supporting feet (20) and supports (20a), wherein said rolls (15) are mounted on a central module (11), while the corresponding mounts (16, 17), tie rods (18, 19), feet (20) and supports (20a) are mounted together in the form of two side modules (12, 13), there being provided a fast clamping and fast release system (21) for stable but separable connection between said central module (11) and said side modules (12, 13) wherein. said systems for fast-clamping and fast-release of said horizontal and vertical rolls (21, 121, 221) comprise a tie rod (60) which passes freely through two aligned holes (61, 62) which are provided respectively on said central module (11) and on said side modules (12 or 13); and having a head (63) which is integral with one end of said tie rod (60) which is seated on a housing of said central module (11), while on the opposite end, a stop collar (64) and locking ring nut (68) are screwed in a position-adjustable manner; and having between said ring nut (68) and said side module (12, 13) on said tie rod (60) is mounted a hydraulic actuator (69) comprising a cylinder (70) inside of which is located a moving piston (71) which is provided with a stem (72), said stem (72) being connected to said tie rod (60) and extending with its opposite end outside of said cylinder (70), the displacement of said piston (71) being actuated by introducing oil under pressure into a chamber (74) against the action of a counter spring (73).