US1634258A - Apparatus for rolling metal - Google Patents

Description

July 501927 J. F. HALPIN APPARATUS FOR ROLLING METAL Filed March 8. 1926 5 R H 0 WM T R m 0 VFW" m A c M m Patented July 5, 1927.

UNITED STATES PATENT OFFICE.-

JAMES F. HALPIN, OF DERBY, CONNECTICUT, ASSIGNOR TO SEYMOUR/n6. 00., O1 SEYMOUR, CONNECTICUT, A CORPORATION OF CONNECTICUT.

APPARATUS FOR ROLLING METAL.

. Application filed March 8, 1926. Serial 1T0. 92,994.

This invention relates to improvements in metal rolling, and has particular reference to a lubricating method and apparatus em.- ployed in connection therewith.

It is well known that insuflicient washing of metal after the usual pickling process leaves on the surfaces of the metal an acid solution in amild form which, if the metal is not thoroughly lubricated before being rolled,

no is sufiicient to cause the metal, while being rolled, to adhere more or less to the surfaces of the working rolls. This results in the formation of a metal lamination uporr the surfacesof the rolls and necessitates frequent w removal thereof for the purpose of grinding said surfaces.

Heretofore, it has been customary, par ticularly in the cold rolling art, to apply oil to the strip or sheet of metal while it is being fed to. the working rolls, but prior to its passage therebetween. This application of the lubricant has usually been performed manually by the use of a swab which is constantly dipped in an open pail, suspended at a convenient place on the roll housing, and then applied to the surfaces of the metal. Experience has shown that this method is very uncertain in securing uniformity of applicaton of the lubricant, one of the main objections being that the under surface of the metal fails to receive an amount of lubricant equal to that applied to the upper surface thereof. Furthermore, in employing this old method, it is necessary to use compounded oil. having the quality of spreading over the metal as the latter is being compressed between the working rolls so as to partially overcome any inequality of the application of the oil to the surfaces of 40 the metal.

In accordance with the present invention it is proposed to apply a lubricant directly to the working rolls as distinguished from the method above described, wherein the metal surfaces are lubricated-before reach-' ing the rolls. In following the resent method, it. has been demonstrated t at the lubricant can be uniformly ap lied to the surfaces of the workin rolls and due to this fact the amount of grinding of the rolls to remove metal laminations therefrom has been materially reduced.

With the presentapparatus and method, considerable economy has been effected in s the amount of, lubricant used byregulating the flow'of said lubricant to distributin rolls which contact the working rolls an thereby applyauniform film of the lubricant thereto. It has also beenfound possible to use an inferior grade of lubricant with the present method and apparatus, since with the lubricant uniformly applied in ac cordance with the present invention, the necessity of using compounded oils, as reviously referred to, is no longer required? The inventive idea involved is capable of receiving a variety of expressions, one of which, for purposes of illustration, is shown in the accompanying drawing; but it is to be expressly understood that said drawing is used solely for the pur ose of facilitating the description as a who e and not to define .the limits thereof, reference being had to the appended claims for this purpose.

In the drawing- Figure 1 is a front elevation of an apparatus for-carrying out the present invention; Figure 2 is a vertical 22 of Figure 1; and

section on the line I Figure 3 is a fragmentary longitudinal section through one of the lubricating rolls and mounting therefor.

The apparatus shown in the drawing comprises what is commonly known as a rollstand consisting of the oppositely disposed side frames 4 between who are mounted in the customary manner the u per and lower working rolls 5 and 6. ese rolls are power driven and arranged in super osed relation so as to -receive and, compress t erebetween a sheet or strip of metal which.

travels through the apparatus in the direction indicated by the arrow in Figure 2. The usual bearin or rider bdxes 7 of the upper roll may li e adjusted vertically by means of the screw members .8 mounted in the tops of the side frames 4. The construction thus far described is well known in the art of metal rolling and further detail description thereof is, therefore, deemed unnecessary for a clear understanding of the present invention.

In contradistinction to the usual method I of rolling metal wherein a lubricant is applied by a swabbing, operation directly to the upper and lower surfaces of the metal just prior to its passage between the working rolls, the present invention contemplates the application of the lubricant directly to the rolls 9 and 10, said branch pipes the surfaces of the working rolls by means of lubricating rolls 9 and 10 engaged, respectively, with the rolls and 6. The rolls 9 and 10 are preferably laminated, being formed of a plurality of disk-like layers of felt so as to be capable of absorbing or retaining a lubricant on the surface of the roll, and applying said lubricant to the surface of the associated working roll at the point of contact between said rolls. Each 1 of the lubricating rolls has its end trunnions 11 mounted in suitable bearings 12 carried by the side frames 4: and is yieldably held in engagement with its working roll by means of a coil spring 13 the tension of which may be regulated by a screw it. Thus the lubricating roll will be free to move radially with respect to its working roll to conform to any possible irregularities on the surface of its working roll and will be constantly held in yielding contact with said roll. Therefore, it will be apparent that as the working roll is rotated its asso ciated lubricating roll will also be rotated by frictional contact and the oil upon the surface of the latter roll will be applied to the surface of the working roll.

In order that a lubricant may be con stantly supplied to the lubricating rolls there is provlded a reservoir 15 conveniently supported above the working rolls from which the lubricant is fed to a main supply pipe 16 depending from said reservoir. This pipe is provided with a valve 17 for regulating the flow of the lubricant from the reservoir and has connected thereto the upper and lower branch pipes 18 and 19 individual to being suspended above their respective rolls. A The branch pipes are provided with a plurality of valve nozzles 20 which may also be utilized for regulating the flow of the lubricant directly to the surfaces of the rolls 9 and 10. With the surfaces of the working rolls 5 and 6, thus constantly and uniformly menses provided with a film of oil the metal being rolled will be efiectively prevented from adnerin to any degree to the surface of either of said rolls. The use of the present apparatus has been found to materially reduce the amount of manual labor in connection with the rolling operation 'and eliminates altogether the necessity of an attendant swabbing the metal prior to its passage between the rolls. It has also been discovered that a much inferior grade of lubricant than that formerly used may be employed and that the necessity of removing the working rolls for grinding operations to clean the surfaces thereof has been materially reduced.

Before the application of the lubricant to any particular part of the surfaces of the working rolls, it is desirable that said sur faces be wiped in order toiremove any oil, dirt, water, or other foreign matter which might accumulate on the surfaces and which, if allowed to remain, might be rolled into the metal sheet and cause damage to the metal. Therefore, there is preferably used the wipers 21 and 22 suitably mounted in the side frames 4: and engaged, respectively, with the surfaces of the rolls 5 and 6 so as to wipe said surfaces after the various portions thereof have engaged the metal sheet and before said portions again contact the lubricating rolls.

What is'claimed is:

In a metal rolling apparatus, a pair of working rolls between which is passed metal to be rolled, a laminated lubricating roll in constant engagement with each of the Working rolls, a lubricant reservoir, a main supply pipe leading therefrom, branch pipes connected to the main pipe and suspended above said lubricating rolls, and means for regulating the supply of lubricant from said reservoir to the lubricating rolls.

In testimony whereof I have affixed my signature. e

JAMES F. HALPIN.

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