US1542349A - Rolling mill - Google Patents

Description

June 16, 1925.

A. v. RIGBY ROLLING MILL Filed Aug. 2, 1923 2 Sheets-Sheet 1 l awlio'c I @LQ 'gyg/ n Mouw/go www e: nad-wht* A. v. vRUGBY June' 16,- 1925.

ROLLING MILL Filed Aug. 2, 1923 2 Sheets-Sheet 2 e. und-*asap* Patented June 16, 1925. f

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ALBERT' VEB-NON RIGBY, 0F SHARN, PENNSYLVANIA, ASSIGNOR TO` T HOS. H.

annisfrncrva.or rannnnn, PENNSYLVANIA, l

ROLLING MILL.

Application; med August 2, 1923,. Serial No. Smara,

Toall t may. conca/mf Be it known that I., Awans VERNON Eiern a citizen et ,the United.: States. residingv at Sharon. i11- the County 0f Mel-"Cer and State of Pennsylvania, have invented Cer-- tain new and useful lmprcvements in# R0llusMilLs; endl do:l declare the following; to be av full, clear, and; enact4 description of-i the invention, such as will enable others skilled in the art tc which it arreltaus to make and usefthesame Y My invention relates to= improvementsrv in rolling mills and more particularly to those of thel continuous type; iii-which a plurality: enrolling' units each consisting of upper and lower rolls., are spaced apart longitudinally of the machine. In adjusting machines of this` character`r for diiferent thicknesses of work and t0. compensate` for temperature changes; caused yby contact ofl therolls with thefht metal, it is rather. difficult to prop.- erlyadjust the: several 'units so .that their rolls-.will have the correct draft, and fur thermore, this;` adjusting operation consumes a, great; deal of time.. It isV therefore the obT ject of'my inventionyto provide an improved association of parts whereby the .rolls ofv all unitsefithemill maybesimul'taneously adjusted, not only;l saving a ,great deal of time, but'y insuring; that` the relativey adjustments of nthe several: unit-s', shall be absolutely correct.

In, carrying out the above end,xa further aim is. to. provide, a: novel arrangement of adjustingy screws for forcing the; upper rolls downwardlyy and taking! the lupward thrust thereof* when operating?, andr to. provide duid pressure means fonquickly raisingv the rolls to any extent permitted bythe screws. Withy the foregoingv in` view, theiinvention resides in the novel subject matter hereinafter-sd" cri'bed and'cliaimed, the description being supplemented by the accompanying drawings.

Figure 1 is a top plan view of a rolling mill embodying my improvements.

Figure 2 is a fragmentary side elevation artly broken away and in vertical section.

In the drawings above briefly described, the numeral 1 designates `a conventional form of continuous rolling mill, said mill including a plurality of rolling units U. In the type of mill shown, each unit comprises upper and lower rolls 2 and 3, vertically semble bearings ii for the Pref ,fell .2 e

pair of parallel vertical guides .5 at each side of the machine for guiding theI bearings l at such side, and a head 6 at each side of the, machine connecting the upper ends of. said guides 5. Y

Eachhead Gis formed with a pair of vertical cylindrical recesses'7 closed at their up ler ends by removable plates, 8 and proyi Ved with stuiiing boxes 9 at their lower ends. Vithin the recesses 7, arepistons 10 from which piston rods 11 extend downwardly, the lower endsr of these rods being ,Secured at l2 t0 the lovver halves- 13 of the bearings f1,y while the upper halves 121 of said bearings are not. secured to the rods, but, merely have openings 15 through which said rods pass. A fluid-pressure pipe 16 extends along the heads 6, one of these pipes being located at each side of the machine, and; is provided with branches 17,' discharging into the 'recesses or cylinders, 7, below lthe pi"tons'10.- It thus follows that when fluid pressure is admitted to the pipes 16, it will raise the pistons 10, consequently raising the rolls 2. For lowering the rolls and receiving the upward thr'ust thereof when in operation, the mechanical means described below, is used.

Vertical screws 18 are threaded through the central portions of the heads 6, and have their lower" ends disposed in Contact with thrust bearinvs 19 carried by the upper halves Mfof the bearings 4, the upper ends ofsaid screwsbeing provided with beveled Igears 20 which may be splined thereon. These gears at opposite sides of the machine, arey connected operatively by transverse shafts 21 and bevel gears 22 on the ends thereof', said bevel gears 22 being in mesh with the gears 20 as shown. Appro priate bearing brackets 23 are provided for the shafts 21' and these brackets may well have bearings 24 for the hubs of the gears 20. A longitudinal shaft 25 extends above the heads 6 at one side of the machine and is rotatable in appropriate bearings 25 rising from said heads7 said shaft having bevel gears 26 meshing with the subjacent gears 20. By rotating the shaft 25 through the instrumentality of any desired means, it will be seen that rotary motion will be simultaneously imparted to all of the screws 18 to effect any desired downward adjustments of the rolls 2, it being understood that suitable provision is made for permitting the cylinders 7 to bleed as the pistons 10 travel downwardly. The weight of the feed rolls however, is at all times carried by the pistons 10 and rods l1 and by admitting the proper amount of fluid pressure below the pistons, the rolls may be raised when the screws are rotated to permit such raising.

By providing the construction shown and described or a substantial equivalent thereof, a simple and compact mechanism is provided for adjusting the upper rolls.

As excellent results are obtainable from the general association of parts disclosed, this association is preferably followedJ but within the scope of the invention as claimed, numerous minor changes may be made.

I claim:

l. A rolling mill comprising` a plurality of transverse vertically movable rolls, bearings for the ends of said rolls, vertical guides in which said bearings are slidably received, said guides having heads each formed with a pair of horizontally spaced vertical bores disposed at opposite sides of the adjacent roll axis, said bores being closed at their upper ends and having stuifing boxes at their lower ends, pairs of vertical piston rods connected with the aforesaid bearings and passing through said stung boxes, said rods having pistons within said bores and the latter having :duid pressure inlets under said pistons, vertically disposed hold-down screws for the aforesaid bearings, said screws passing through the heads of said guides between the piston rods, and means for simultaneously driving the holddown screws at opposite sides of the mill.

2. A rolling mill comprising a roll, bearings supporting the ends of said roll, vertical guides in which said bearings are mounted for vertical sliding, said guides having heads at their upper ends, each formed with a pair of horizontally spaced vertical bores disposed at opposite sides of the roll axis, said bores being closed at their upper ends and having stufling boxes at their lower ends, pistons in said bores having piston rods passing through said stuffing boxes and connected with said bearings, iiuid pressure inlets into said recesses below said pistons, and hold-down screws passing through said heads between the piston rodsJ the lower ends of said screws engaging' said bearings.

3. A rolling mill comprising a roll, bearings supporting the ends of said roll, and divided horizontally into upper and lower sections, vertical guides in which said bearings are mounted for vertical sliding, a pair of horizontally spaced vertically disposed fluid pressure cylinders at the upper end of each guide and disposed at opposite sides of the adjacent roll axis, pistons in said cylinders having downwardly extending piston rods, means securing the lower'ends of said rods to the lower sections of said bearings, the latter having their upper sections free of attachment to said rods, permitting them to be moved upwardly from the lower bearing sections when changing rolls, vertically movable mechanical means engaging said upper sections of said bearings for normally holding these sections lowered toward the lower bearing sections and for depressing the bearings and roll, and means for admitting fluid pressure into the cylinders below the pistons to raise the bearings and ro 4. A rolling mill comprising a roll, bearings supporting the ends of said roll and divided horizontally intoy upper and lower sections, said upper and lower sections havmg vertically alined openings at opposite sides of the roll axis, a pair of upright piston rods at each end of the roll, said rods passing slidably through the openings of the upper bearing sections and being secured in the openings of the lower bearing sections, fluid pressure cylinders and pistons associated with the upper ends of said rods for raising them, and holddown means engaging the upper sections of the bearings to normally hold them in operative relation with the lower sections of said bearings and to depress the bearings and roll, said hold-down means being vertically movable and when raised permitting upward sliding of the upper bea-ring sections away from the roll and the lower bearing sections.

In testimony whereof I have hereunto affixed my signature.

ALBERT VERNON RIGBY.

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