SU1417946A1 - Four-high stand - Google Patents

Description

,;

X (AK1L1

1 o

about

rolls are carried out by the splitting of the upper wedges 7 and the photo-wedging of the lower wedges 7 by splitting (wedging); setting the gap between the horizontal 4 rollers - simultaneous approaching or extending all the wedges 7 Using the wedges 7 for adjusting both the horizontal 4e and the vertical 6 rollers greatly simplifies the design of the cage. This also allows the cassette 5 vertical rolls to be made simpler in shape and stiffer. The range of adjustment of the rolls with this form of wedges 7 increases, which expands the technological capabilities of the cell and reduces the fleet of rolls. 3 il.

one

The invention relates to ferrous and non-ferrous metallurgy, in particular to four-roll (universal) pre-stressed working stands for rolling complex shaped profiles. The purpose of the invention is to simplify the construction of a stand by combining the mechanisms of setting horizontal rolls. and the axial installation of vertical rolls Hj as a consequence of this, the expansion of the technological capabilities of the stand, the increase in accuracy and reduction of the park of rolls.

FIG. Shows a four-roll stand, view. front view fig 2 is the same, side view; on fig.Z - cassette vertical roll four-roll stand, view of the front

The proposed stand (FIGS. And 2) includes beds with uprights 1, upper 2 and lower 3 pillows with horizontal rollers 4, cassettes 5 with vertical i-pkamk 6, wedge 7 placed in pairs between the pillows 2 and 3 and cassettes 5 s. the possibility of moving the adjusting screws 8 fiksad of pillows 2 and 3 and the cassettes 5 n in height is carried out by means of pressure screws 9,

The cage is assembled as follows.

using a transshipment device and a crane (not shown), the lower horizontal roller 4 assembled with cushions 3 is inserted laterally from the non-driven cage side and installed in the windows of the beds I and wedge 7 on each cushion 3 on the right and left side so that 8 screws rest against inside

0

50

five

Renne facets racks 1 stanin. The cassette 5 with vertical rollers 6 is mounted on the wedge 7, the wedge 7 is again on top and, finally, the upper horizontal roll 4 is assembled with the cushions 2. After assembling the cushion stand 2, the caster cassette 5 and the wedge 7 are fixed in height by means of pressure screws 9. The wedges 7 and the clamping screws 9 prestress the cage elements and eliminate the gaps in the joints.

The cage works as follows,

The torque from the engine is transmitted through gears (not shown) to the horizontal rollers 4. Rolled metal is carried out in a caliber formed by horizontal 4 and vertical (non-driven) 6 rollers.

The stand configuration is as follows.

By approaching (extending) the upper wedges 7 and by correspondingly expanding (approaching) the lower wedges 7, the vertical rolls 6 move down (up), that is, thus the axial adjustment of the vertical rolls 6 is performed. Radial adjustment of the horizontal rolls 4 is carried out by approaching (in the case of an increase in the gap between the horizontal rollers 4) or by moving apart (in the case of a reduction in the gap) all wedges 7.

Expansion of the technological capabilities of the four-roll stand of the proposed design allows for a reduction of the roll park by a factor of 5 to 10, a 2-3-fold reduction in the number of transfers of the four-roll stand and a 20-30% increase in ji, 17946

to increase rolling accuracy, which will ensure quick stretching of the assortment of low-tonnage batches of complex high-precision profiles

Claims (1)

Invention Formula m The four-roll cage is mainly of pre-stressed type 5 including beds with upright upper and lower horizontal rolls installed in pillows pressure and installation mechanisms of horizontal rolls 5 of the cartridge with vertical rolls 5 mechanisms of radial and axial installation of vertical rolls, and the mechanisms of axial installation are completed in the form of drive installation wedges, about tl and, h and y shch and with topics that, in order to simplify the cage design by uniting the mecha- nism of installing horizontal rolls and axial mounting of vertical rolls and, as a result, expanding the technological capabilities of the cage, improving accuracy and reducing the roll park, adjusting wedges are placed on both sides of the vertical roll cages and interact With their horizontal surfaces, the instantaneous inclined surfaces of the wedge interact with the corresponding surfaces of the upper and lower horizons. Cove, wherein wedges are made with possibly with. Tbtc who lateral movement parallel to the rolling axis . 2 Lzzz 9u, z.3