US2614526A - Metal stock oiler - Google Patents

Description

A. J. ZABER ET AL METAL STOCK OILER Oct. 21, 1952 2 SHEETS-SHEET 1 Filed Jan. 14, 1949 .v UNlTED fSTAT Patented Oct. 21, 1952 I am s'rooK O ILE R Adolph-J. Zaber and John De Witt Gray, Evans ton, 111., assignors' to Graymill Corporation, Evanston, Ill.,' a corporationof Illinois Application January-14,1949, Serial No. 71,006,

s Claims. (c1. 11s-122') is This invention relates to an improved stock oiler. A stock oiler'is a device for applying a film of lubricant to both surfaces of a metal sheet immediately before a punching or a shaping I operation is performed, usually by a punch press. lihe oiler is mounted immediately adjacent the bed of the punch press and the stock is fed through the oiler into the feeding elements oi the press. v

The first object of this invention is to provide an oiler capable of handling lubricants of widely varying viscosities. Existing oilersutilize adrip pot for applying lubricant to the upper surface of the stock and :a felt roll operating in a'sump applying lubricant to the lower surface of the stock. This construction will not provide an eve'n distribution of oils of high viscosity, that is, oils that do not flow freely, This deficiency greatly impairs their usefulness because in manyv drawing andforming operations, and in a few piercing and punching operations, machinists use'very heavy oils in order to lengthen the lifeof their dies. .At the present time, many of these heavy oils are manually applied to the surface'of, the stockbyabrush.

Applicants obtain their objective firstly by ape plying the oil under pressure to the stock surface. Applicants oiler consists of a sump, an upper tube and a lower tube, each having perforations therein for spraying lubricant on both sides'of the stock, and a pump for forcing the substituted for anotherset in a matter of sec-- onds, Substitution, of one set" of applicants" V rollers for anotherinvolves no knock-down time and does not justifyf a punchpress operators showing such tiine on his time card 'The feature "of applicantsfinvention which attains this object is the mounting of rollers on shafts having slotted:

" ends which seat in vertical ways, open'at the top,

so" that a pairofrollers can be' 'lifted out'and another pair quickly substituted.

This mounting feature of rollers mais em-, I

played for certain wiper andbaiiie bladesand carries out a third object of appli n n tiOn This object is to provide a mounting which may be used for various devices for working on'f'the surface of stock. The present-device consists' iof three or four stages, namely, 'a'bafiie stagega spraying stage, and a roller stage, shjownin' one 7 embodimentQanda wiper stage, shown in a seclubricant out the apertures. The tubes are quickly disassembled so that it ispossible to provide the user with a plurality of tubes having different sized apertures to handle lubricants'of' different viscosities.

The second object of this invention is to provide an oiler that can apply various thicknesses of lubricant film to the stock. All lubricant-applied to; stock must subsequently be removed.

The more lubricant on the stock, the more expensive the degreasing step, and themore oil that is lost. Machinists,. therefore, wish to apply the minimum thickness of lubricant film consistent witha maximum preservationof the dies. Applicants apply a surplusage of lubricant to the between the surface of thesame felto'r'. rubber rollers which'leavesmuch the same thickness'of film irrespective of the pressure on the rolls or the viscosity of the lubricant, applicants provide the user with a plurality of sets of rollers, some metal, some rubber, which have the ability to pass: different amounts of lubricant. Applicants oiler is so designed that one set of rolls can be system beingonewhich circulates theoil, someof this material will be carried to the pump assembly" stock, but in place'of' simply placing the stock,

end embodiment. Applicants ..are c'dntemplating a stock cleaner which will probably be a sepa- I rate unit, but' may beincorporated into the oiler.

Stock, at the time of use, in various states of cleanliness, depending upon howstored and'ior what period of time. If it is veryjdirty, it is desirable to cleanit in orderjtoiiurther protect thedies. Additionally, some stock, such as cop-, v maybe treated with ;a protective film, by the-mill. that rolled the copper, Machinists frequently want this film removed before per;

per sheets,

forming punching or drawing -operations. A cleaning operation necessarily depends uponthe nature of the :film. A solvent :inay, -be,used to washthe film off, or in some cases, such as dirt,

it may be brushed-off. Applicantsmountin'g enables themtosubstitute brushes orrollers for wipers and baiiiesand where desirable, to, employ the spray.;v c 3-, E r r Another object of this inventionto provide an oiler vwhosej'sump may. bepquic'kly cleanedpfiA certain amount ofvforeign, ingredients comingofithe stock willcollect the sump. Applicants.-

which has incorporated into it settling. tanks' so' that substantially'clean lubricant will returntothe' oiler. However, some ofthe material will collect in the sump of-the oiler'yanda featur of" app icants invention is not onlythe ready -removal of rollers", baflles -and'rwipers,"but the re moval of the spray tubes so that ftheisump is open andmaybe quicklycleaned f v Another object. of'this invention "isjt an' upper guide for controlling, flapping'of the end o'f stockdra'wnf or roll. In the best present practice, stock is fed through straightening rolls so that it is substantially fiat as it reaches the bed of the press.

Very commonly, however, such rolls are not employed and the stock as it enters the oiler may have waves in it which become more marked as stock comingfrom the small diameter of'the roll is used. The end is particularly bothersome. In

1 applicants device, where the baffles, wipers and it straighter as it moves through-the-oiler to the.

feed rolls or fingers on the press.

practice is followed in the case of the drains Applicants design includesseveral construction features which will appear in the description that follows. Applicants commercial oiler'isillustrated in Figs. 1 through 5 of the accompanying drawings. Another embodiment of the invention employing wiper. blades is illustrated inonerview. tin/alternative horizontal guide is also illustrated. Referring to the drawings:

Fig. lfis a perspective view partly cut away illustrating. applicants. commercial oiler and pumpassenibly. with apiece of stock being. fed therethron hi f Fig. 2' .i's. a-plan view ofthe oiler. with thelid partly cutaway;

. Fi .3. is. a transverse/sectional view taken on the line331-e-3 oflFig. 2';

Fig, 411s agside elevation with portions ofthe cover aridfrontfeed-table .partly cut away;

Fig. 51 isa sectionalview of one end of the oile'rftaken'oni the line 55'of. Fig. 2;

Fig. fi' isya sectiona'l'view of an oiler having a pair ofrwiper blades mounted therein;

Fig. '7"is' a side elevation ofa roller-type horizontal guide which may bev substituted for the fixed horizontal guide 'shownin Figs. 1 through 5;

Figq8is'a front" elevationof" a portion of a .lznurledsteel" roll.

24'-'a-rid-26--areformed in end walls l2-andl4 at Drain outlets 28- and 29-- are their midpoint. formedin the lower portion of the ends I2 and M; and as-illustrated-in-Fig. 5-; these drains are not incommunication-with the vertical passageways suchas 2B Transverse inlets such as 30 arid 32J 'are drill'e'd andthreaded in each end wall so that -they pass" through the verticalpassagew'ays such as- 26-, see Fig.5. Slotted pipe=plugs 34 and 36 close the outer ends of the transverse inlets ;3IJand32;

The. casting It has recessed shoulders :38 and 40;-on.l.the inside top and. side portionof eachend soithat acover 42, not-shown Fig; l, but showniniFigs. 2 -and;4;- may be. droppedinto position and heldagainst; lateral movement. This cover-42'. hasaside walls 44=and46which may be spacedzby a. distances,slightlyless than the distanCe; between therwalls 48 and 50 of the shoulders-such as 40, referring to Fig. 1, so, that the cover-42-. being madeof elastic material can be snapped down onthese walls 48 and. 50 and held tightly in.pos'ition., The-side walls of the cover terminate about one-half inch. above the ledge 52 .and stock. is .fed .through .this-opening..

Two spaced tubes; 56 and 58 called sprayers havepp'rts such 60'and are threadedly mounted ineither end of'the casting. As shown in Fig. 1,

they are mounted in the end wall I4 in the inlet ports 30 and 32, see Fig. 5. Each tube carries an end cap 82. The user mounts the tubes in communication with whichever passageway 24 or 26 is most convenient for attaching a flexible hose 64 leading to the high side of a pump assembly 66. Thus, if he attaches thetubes to the passageway 26 asshownin Fig. 1', the passageway 24 is not used, and if he attaches the tubes to passageway 24, the passageway 26 is not used. The same 28 and. 29, but in the case of the unused drain, a plug such as:6.8, in Fig. l, is employed.

Inorderto confine lubricant within the device,.applicants provide a pair of bafiles ID and 12. Referring to Figs. 1 and 2, both of these baffles-are mounted on a rectangular frame I4,

the upper bafiie I0 being attached to the top transverse member I6 by a gripper strip and bolts 82, and.the lower baffle I2 by similar members to the lower transverse member I8. Each endiof'the upper and lower transverse members.

16 and,I8 is vertically slotted to formways which ride on a flange or guide 84, formed on av plate BjGifastened to the inside of. the end wall. This ballie frame is free to move up and down with" means, and this head-is vertically slotted to seat- Disposed between the in thel way or guide '88.- head 94 and the roller bearing assembly is a bushingS'I which carriesan annular groove 98; Ridingin-theannular grooves 98 is a helical spring I00 which urges the two rollers into engagement with each other.

Referring to- Fig. 3;- Hl2- identifies a casting that acts as a horizontaliguide'. This castingis fastened to the castin II) by bolts such as HM and I86, see Fig. 2. The casting has a horizontal feed lip I08, see Figs. land 3; at either end of which is. a raised portion H0 and. H2; Spanning thefdistance between the raisedportions: H0 and H2 isan upper guide plate. I I l-tightly.

fastened to the portions. II 0 and [I2 by bolts such asI It.

Betweenthe feed lip-and the main body of the oiler;therearev a, pain-of aligned slots II-8iand I20; seeaF-ig. 2, which act asways for adjustable. vertical guide rollers I22 and-i124; These guide rollers maybe formed in variousways. Asillustrated in Fig. 3, each consists of a bolt I26 hav ing'a: head and carrying a roller I24 which is free-to turn on the. bolt. The bolt I 26-has a threaded bushing I21 which is seated on the top I of the feed lip I 08 by tightening the nut" l3 0 which thereb-y'fixes the roller in its desiredpo sition. I

It will be. observed'that the apertures, inthe lower tube 58 are directed atan angle of about 45" "degrees toward. .the rollers, whereas. the aperturesof the. upper tube. 56 are directed vertically downwardly. The lower roller92 is in the sump so that in. using lubricants ofvery heavy viscosity where the pump is unable to throw theoil from the lower tube 58.onto the rollers, the-level of. the fluid in thesump maybe raisedso. that the lower roller is. partially submerged. This is effected by coupling an elbow having an arm extending upwardly toa point above the bottom of the lower roller 92 to the drain.

In Fig. 7, there is illustrated a roller-type horizontal guide.- 'Her'e,--thecasting has a pair of end arms such as I38 between which are mounted rollers I40 and 142. These rollers are mounte ed on shafts which seat in journals such as I44.

The shafts may be held against rotation by, set

screws such as I46.

A second embodiment of. the. invention is shown in Fig. 6. Here a baffle assembly I48, sprayers I50 and rollers I52 are the same as the assembly heretofore'described, but an additional rectangular frame I54 carrying blades I;=6 and 1 I58'is employed. .These bladesflll'rfi andl158 are employed as wipers for spreadingand removing lubricant from the stock. i-In' this embodiment, the casting I64 forming the sump has been' suite ably enlarged. j

In addition to supplying a user with rubber or synthetic rollers of varying degrees of hardness,

applicants supply knurled,metal rollers in which the knurls are variously spaced and the grooves A portion of d I tal over the sump along a selected path, liquid applicators positioned above and below said path, vertical guideways mounted on opposite inside walls of the sump, a means for treating the surface of stock, one of said means mounted above said path and the other mounted therebelow, and slides mounted on opposite ends of each of said surface-treating means seatable on said guideways for free vertical movement therein so that each of said surface-treating means is free to move upwardly and downwardly independently of each other, and a contraction spring means mounted between the upper and walls of the sump so that the flanges are in transverse alignment, a pair of rollers mounted on shafts having straight end slots seated in one pair of aligned flanges, and a pair of flexible bafiies mounted on a frame having side slots seated on the other pair of aligned flanges.

3. A stock oiler for use in a circulating liquid system comprising a sump, guides for directing the stock with its surfaces substantiallyhorizontal over the sump along a selected path, liquid applicators positioned above and below said path. a wiper having a depending straight lower edge for wiping the top surface of the stock mounted above and transversely to the path behind the liquid applicators, a second Wiper having an upwardly directed top straight edge for wiping the lower surface of the stock mounted belowand transversely to the path behind the liquid applicators, and a pair of flexible baffles having overlapped straight edgesmounted in advance of the-fliduid; applicators, with the overlapped edges in andft'ransverse to thepa'th'," one bafflebeing mounted above; the*path i and the I other;

baflie being mountedthe'rebelow.

4. -A stockfoiler foruse in a circulatiirig-"liquid'i system -.'comprising a casting having afbotto'm two end walls, and-side walls extending 'up-" wardly to a point spaced-below'the top of the end walls] and together forming a sump; the' top edges of the "side-"walls being straight {and parallel to each othera'nd constituting supports for 3 stripstock ;.to-be'*fed across"--the sump 'aion'ga path, a passageway drilled in an end walLopenings into th e -passageway through the inside sur" face of the end walljone opening above the level of the path and the other therebelow, a tube ex tending toward the other end *wall 'm'o'unted in eaoh' openingg and apertures in each" tube wall directed toward the path. I 5. :Astock oilerfor-use in a circulating liquid system comprising a casting having a bottom,

two end walls, and side walls extending upwardly to a point spaced below the top of the end Walls and together forming a sump, the top edges of the side wallsbeing straight and parallel to each other and constituting supports for strip stock to be fed across the sump along a path, a passageway drilled in an end wall, an opening into the passageway through the inside surface of the end wall, a tube extending toward the other end wall mounted in the opening, apertures in the tube wall directed toward the path, an angle iron vertically fastened to the inside surface of each end wall with their projecting flanges in transverse vertical alignment with each other, a vertically positioned rectangular frame, an outwardly directed vertical slot in each end of the frame and positioned on a projecting flange so .that the stock path passes through the frame,

and apparatus for treating the surface of stock mounted on the frame.

6'. A stoclr'oiler for use in a circulating liquid system comprising a'casting having a bottom, two end walls, and side walls extending upwardly to a point spaced below the top of the end walls and together forming asump, the top edges of the side walls being straight and parallel to each other and constituting supports for strip stock to be fed across the sump along 'a path, a passageway drilled in an end wall, an opening into the passageway through the inside surface of the end wall, a tube extending toward the other end wall mounted in the opening, apertures in the tube wall directed toward the path, an angle iron vertically fastened to the inside surface of each end wall with their projecting flanges in transverse vertical alignment with each other, a vertically positioned rectangular frame, an outwardly directed vertical slot in each end of the frame and positioned on a projecting flange so that the stock path passes through the frame, apparatus for treating the surface of stock mounted on said frame, a second angle iron vertically fastened to the inside surface of each end wall with their projecting flanges in transverse alignment with each other, and a pair of rollers mounted on shafts having straight end slots seated in the latter aligned flanges.

'7. A stock oiler for use in a circulating liquid systemcomprising a sump, guides for directing the stock with its surfaces substantially horizontal over the sump along a selected path, liquid applicators positioned above and below said path, a plate having an outwardly directed vertical aura-sea flangemounted-pn the insideof eachef :thev two; opposite end walls ofl'the sump so that the flanges are in transverse alignment, apparatus for treating the surface ofstock-clisposed adjacentsaid horizontalypath, and slides mounted-on each end of, esa-id apparatus in slideable engagement with h anassociated-verticalflange.

8.T.A stockfloiler i011 usedn a: circulating liquid. system comprising a: sump,- guides sfor directing therstockfl-w-ithits surfaces substantially horizon=.. taltgover. the sump alongna. selected path, ,liquid.. applicators positioned below and above said path vertical g uideways mounted ,on' opposite inside-- walls ofqthe sump, a rrollerbfor treating ,,thesur-. face-ofthestockmounted above thepath andta secondslrollermounted: below the path, the tworoll'ers gbeingon parallelhorizontal shafts, a slide mounted-on'; the end" ofneach shaft-and seated in an associated guidewayrso that the two rollers arefireatQmoyevertically: indpendentlypffieach other, and. an elastic-belt over the two-shafts at each end of the rollers urgingathemltoward each REFERENCES. CITED Thetfollowin'g: references are 01: record :in: the

file of this patent:

UNITED STATES" PATENTS- l I1L1nr-1ber.v Name Date 15521697 Boettgen- Dec. 13,1927" 1,756,998? Walker MayJ6f11930' 2,348,698. Thompson .May.19j1944 2,356,666 Hamilton flAug'; 22, ,1944 2,'373',432- Tanner .Apr. 10,".1945 2,381,183 Richards Aug-,7," 1945? 2,419,132 Friedman Apr 15111947. 2,421,610

Gordon June 311947"

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