A metal strip rolling mill installation including a rolling mill (L), having a roll stand and a set of rolls, inside the stand. The installation includes a robotic system (1) suitable for performing the rolling mill roll changing operations. A gripping tool change magazine (MAG) includes a first grasping tool configured for inserting and extracting a work roll, a second grasping tool configured for inserting and extracting first intermediate rolls, a third grasping tool is configured for inserting and extracting second intermediate rolls, and a fourth grasping tool is configured for inserting and extracting sets of rollers.

To minimize the setup times in the case of a tool changeover on rolls, the movement sequences are separated into transverse movements and vertical movements using a tool changeover system and method for changeover of at least one tool disposed on a roll shaft in a working position. In one aspect, the tool changeover system includes a tool changeover rack, a vertical transport and a transverse transport. A drawing frame separate from the tool changeover rack can be transported transversely separately with reference to the tool changeover rack. The tool changeover rack has a device for connecting with the vertical transport and a tool accommodation for accommodating the tool. The drawing frame has a device for connecting with the transverse transport and a device for connecting with the tool.

A method for changing work roll in a rolling mill which limits the risk of scratching the work roll, or even the risk of scratching the metal strip, upon extracting or inserting the work roll, by virtue of a mechanical separation element, in particular of the branches of a fork system, inserted by a robotic element.

A rolling mill stand for rolling a metallic product (P) that includes, inter alia: first and second movable rails arranged to allow unimpeded movement of work roll chocks of upper and lower work rolls when in an idle position during rolling operations, and replacement of the upper and lower work rolls when in a service position. Methods are provided for moving the first and second movable rails between the idle position and the service position in order to replace the upper and lower work rolls.

A casting/rolling installation for producing hot-rolled strip. In order to save investment costs for the roll changing device in a corresponding installation with two parallel casting lines, without a roll change taking place in the process in a less operationally reliable and more complicated manner, the roll changing device is configured in the form of a rotary table and arranged in the intermediate space between the two casting lines.

The invention concerns a 4-high/6-high/18 HS cassette-type roll stand in which bending force is transmitted to bending journals (6) of roll inserts (7) by piston-cylinder units that are connected with Mae West blocks (3). Here, the piston at the piston rod (1) is fixedly connected with the Mae West block (3) and the cylinders (4) fit around the bending journals (6) at the inserts (7) of the rolls, so that thereby bending force can be transmitted directly to the bending journals (6) of the roll inserts (7).

To minimize the setup times in the case of a tool changeover on rolls, the movement sequences are separated into transverse movements and vertical movements using a tool changeover system and method for changeover of at least one tool disposed on a roll shaft in a working position. In one aspect, the tool changeover system includes a tool changeover rack, a vertical transport and a transverse transport. A drawing frame separate from the tool changeover rack can be transported transversely separately with reference to the tool changeover rack. The tool changeover rack has a device for connecting with the vertical transport and a tool accommodation for accommodating the tool. The drawing frame has a device for connecting with the transverse transport and a device for connecting with the tool.

A roll rearrangement device 100 includes a carriage 110 that can travel in the axial directions of a second intermediate roll 4 and a backup roll 5 provided in a multi-high rolling mill 200, a support beam 130 that is provided so as to be movable with the travelling of the carriage 110 and taken in and out of the multi-high rolling mill 200, and two roll holding sections that are provided with an interval in the axial direction of the support beam 130 and can attach and detach the second intermediate roll 4 and the backup roll 5. This makes it possible to provide a roll rearrangement device and a roll rearrangement method that can improve the safety of rearrangement work as compared with conventional ones by realizing parallel insertion and extraction of rolls during roll rearrangement.

A rolling machine has pairs of rolls in a horizontal line of roll pair locations, with each pair including upper and lower rolls opposed across a vertical gap. A sliding frame is mounted on the rolling machine for movement alongside the rolling machine in a direction parallel to the line of roll pair locations. A lifting frame is mounted on the sliding frame for movement vertically relative to the sliding frame beside each of the roll pair locations. Other parts include a roll cassette and a load tray. The load tray is configured to carry the roll cassette, and is mounted on the lifting frame for movement relative to the lifting frame transversely into the vertical gap between the rolls at each roll pair location.

A roll-holder cartridge for a three-tube rolling stand with means adapted to release a tube during rolling in case of emergency. The roll-holder cartridge (3) has on both side walls a substantially Y-shaped opening (10) laying with the foot at the vertical axis yoke support so as to be able to pull out the roll-holder cartridge according to a direction coinciding with the horizontal axis of the vertical axis yoke while leaving the support hanging from the fixed structure (13) of the rolling stand. In case of normal maintenance operation, the cartridge (3) is pulled out sideways from the structure of the rolling mill with the yoke support of the vertical axis roll anchored to the cartridge itself, like the other supports of the rolls.