4-roll, 6-roll, 18-HS-roll stand having a cassette-type design

Abstract

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).

Claims

1. A cassette-type 4-high/6-high/18 HS roll stand comprising: a roll set comprised of upper and lower work rolls; respective upper and lower chocks carrying the upper and lower work rolls and each having a bending pin; stationary Mae West blocks adjacent the chocks; respective double-acting upper and lower bending cylinders vertically shiftable in the blocks and each having a piston compartment and an opposite ring compartment, each of the bending pins being journaled in a respective one of the cylinders; and respective pistons in the cylinders having piston rods fixed to the respective blocks and formed unitarily and integrally of one piece so as to move jointly.

2. The 4-high/6-high/18 HS roll stand according to claim 1, wherein a hydraulic supply is connected to the piston compartment of each cylinder as well as to the ring compartment of each cylinder through the respective piston rod.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) In the following, the invention will be explained in more detail with reference to the drawings. Therein:

(2) FIG. 1a is a schematic view of a roll stand in 18 HS setup,

(3) FIG. 1b is a schematic view of a roll stand in 4-high setup, and

(4) FIG. 1c is a schematic view of a roll stand in 6-high setup.

SPECIFIC DESCRIPTION OF THE INVENTION

(5) Piston rods 1 are solidly retained by holder blocks 2 in respective Mae West blocks 3. Their cylinders 4 move vertically in guides in the respective Mae West blocks 3 as the result of the application of pressure to the piston side or ring side, and transmit by means of the seats 5 in the cylinders 4 bending forces to pins 6 of the roll chocks 7 to these, and correspondingly to the roll pins of the intermediate roll in the 18 HS roll stand (FIG. 1a) or the work roll 9 in the 4-high roll stand (FIG. 1b) or 10 in the 6-high roll stand (FIG. 1c).