US1667413A - Of canton - Google Patents

Description

5 Sheets-Shee: 1

NBlw/r W. M. BLECKER CONTINUOUS SHEET ROLLING METHOD Original Filed Dec. 7, 1925 m an April 24. 1928.

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Wt M. BLECKER CONTINUOUS SHEET- ROLLING METHOD original Filed Deo. '7, 1925 5 Sheets-Sheet INVENTOR 0000000.0-00O0O00O0000QO April 24, 1928.

W. M. BLECKER CQNTINUOUS SHEET ROLLING METHOD original Filed Dec. '7, 1925 5 Sheets-She??l 4 INVENTOH April 24, 1928.

W. M. BLECKER CONTINUOUS SHEET ROLLING METHOD Original Filed Deo. 7, 1925 5 Sheets-Sheet I/I/.NJSIMCW BY ATTonNEY Patented Apr.` 24, 1928.

v UNITED :s'rATss winLrAM M. BLECKER, ``oi: CANTON, oHIo, nssreivon TOEDWARD A. LANGENBACH;

or CANTON, oHio.

CONTINUOUS-SHEETROLLING METHOD.

Original applicationy filed December 7, `1925, Serial No. 73,597. Divided and this` application filedfJ'un'eO.,

1926. Serial No. 119,675.

`This invention relates tothe continuous rollingof sheet bars, light plates or slabs into sheets ofdesired gauge, and the object of the improvement is to provide `a method in which sheet'bars, light plates or slabs are heated and passed continuously through a series ofroughing mills, being matched or piled once, twice or more depending upon the gauge of sheets to be rolled, the pieces being thenl reheated yand automatically doubled, if sheets under 22 gauge are desired, and then continuously passed` through finishing rollsvLthroughside and Aend shearingapparatus, then through a continuous annealing furnace and linally through sheet `levellingand opening mechanism and onto a cooling-table; each succeeding stand of rolls throughout the train being operated at a 1 higher speed `than `the preceding rolls in 20 order to accommodate the increasinglength of the bars or sheets as they4 are passed through each stand.

. An embodiment of an apparatus for` car rying out the invention is illustrated in the 25 accompanying drawings, in which Figure lris a, plan sectional view of the forward end of the train kof apparatus showing the bar heating furnaces, wire scrubbing rolls, the first'series of .four stands `of 3o roughingmills, the first matching table and the first standofthe second series of roughing inills; f'

Fig. v'2, a longitudinal sectional View of x'thesame; f i i Fig.v 3, a plan sectional View showing the continuous ureheating furnace, usedfor rolling sheets lighterthan 22 gauge, the remaining three stands of roughing mills in the'sec- ,Y `ond' series, the second 'matching table` and 40 the first sta-nd of finishing rolls;

` Fig. 4, a longitudinal sectionalview of the,

same

Figj, aplan sectional view showing a continuoussheet reheatin furnace located beyond the first stand of nishing rolls, the secondand third standsoffnishmg rolls, a continuous sheet reheating furnace used for lighter than 22 gauge sheets and the fourth stand of finishing rolls;

Fig. 6, a longitudinalsectional` view of the same;

Fig. 7, shows the last two stands of finish ing4 rolls and the side trimming apparatus used for heavier than 22 gauge sheets;

Fig. 7a is a view in cross section takenon 1ine.7- a of Fig. 7. l i

F1g.`8, a vertical longitudinal sectioniof the same;

Fig. Qshows the sheet end trimming i paratus, thecontinuous open annealingfun nace and the sheet leveler used for sheets.,

heavier than 22 gauge;

Fig. l0, a vertical longitudinalsection of the same;

Fig. 11, thepack loosening and opening apparatus and cooling table for 'sheets'A heavier than 22 gauge;

Fig. 12,

the same; i

Fig. 13, a plan sectional view of the doubling apparatus, continuous opensheet furr `straightening rolls which succeed y those shown in Fig. 14;

Fig. 16, a vertical longitudinal section of the same;

Fig 17, a plan sectional view ofthe vside4 and end shearing apparatus and packloosening and opening mechanism for lighter than' 22 gauge sheets; l Fig. 18, a vertical the same;

Fig. 19', a plan view of 4the cooling table locited beyond the pack opening mechanism, an i the same. 1 p

Simllar numerals of reference `indicate corresponding parts throughout thel draw`- ings.

nacesl are provided for heating sheet bars,

light plates or slabs which are'placed on edge` in thefuruace as indicated at 2.andl continui ously moved therethrough as by a pusher 3,

the bars being pushed from the furnaceqonei at a time, as they are properly heated, and

dropped flatwise upon a roller table 4`upon; which they are carried between a pair of wire scrubbing rolls 5` which remove the loose oxide from the bars. y The bar y is then passed successively longitudinal Asection ofi Fig. 20, a vertical longitudinal section `(if One or more continuous ybar heating furff a vertical longitudinalsection of `1 through .four lstands of iroughing mills indicatedcat 6,V 7, 8 and 9 each of Which is operated at a higher speed than the next preceding; stand. The piece is entered into the bite of the rolls of each stand hy an automatic straightening and conveying device Which comprises a pai'r ofV endless chains 10 mounted upon sprockets or rollers 11 driven preferably 1byan electric motor which drives the adjacent stand of rolls.

Each pair of these chains is connected by a. bar or rod 12 arranged to'he engaged hy the piece which automatically throws in a clutch to operatethe sprockets 11v from the motor. The chains are revolved around the sprockets,` the piece being conveyed upon the chainsinto the biteoftlie rolls, until the bar` 1'2is again inits original position when .the clutch'is automatically thrown out as by operation `ot `a limit switch.

The bar is reduced in thickness and increased in length as it passes through each succeedingr` stand of roughing mills and 'tor this reason each succeeding stand is spaced a greater `distance from the preceding stand l and isoperated at a higher speed.

I'n roughing bars for sheets lighter than 22gaugei'thebars as they pass through the stand 9 of roughing rolls are deposited upon a matching table 13.y Thisfmatching table is formed by `inclining ione section ot the table ltoward thecenter as shown at 14. A pair of chains 15 are located around sproclo etsl l'carried by this inclined portion oi the table, said chains being connected by a harlff; v

This matching table is only used for rolling sheets lighter Athan 22 gauge. Straightening fingers of usual construction are prei'-` erably provided upon the matching table forproperly straightening the pile. "When twioisheets havebeen-piled or matched upon the inclined portion of the table,` as shown usefonly' wherelight'er than 22gauge sheets are-@being rolled.` The piles are passed throughH ther stand-19` to a roller table 2O,`

thence throughua stand 21, upon a roller table22and through the final stand 23, or roughing mills.` Each `of. the stands 18,` 19, 21fand 231is1operated at a higher speed than the 11e-Xt preceding stand. i

As the' piles arer passed through the last stand 23 of roughing mills they are deposited upon another `matching table 24.

v24, the tableY is operated to move the pile into the bite of the rolls ot the i'irst stand 25, oil hnishing mills, after which the pile is `passed through .a` small cont-inuousopen ieheatingf furnace 26 and then successively through the stands 27 and 2S ot' finishing mills-and, if rolling sheets heavier than 22 gauge, through` a continuous open sheet fur.- nace29.`

The usual-rollertables are located het-Ween the stands and suitable tension guides 29a' are provided for properly placingfthe pile in each stand of rolls. In rolling sheetsot 22 gauge or heavier the pileis then passed;`

thrmigftin three successive stands oit' finishing rolls indicated at 30, 31 and 32., suitable roller tables `and tension guides being` pro# vided between the saine, and Aasi the.pile:

passes through the last stand 32 of finishing rolls'it is receivedupon an endless ccnveyer` table 33 provided with magnets which are` automatically energized asthe pile passest onto the tahle,. thus holding the pile.A rigid as it is moved, by the table, throughtherotary shear Vblades 34,. which trim the `side edges ol the sheetsto the desired Width, as`

shown at 35.

The magnets upon the conveyor 33. are` automatically deenergized as the trimming ci the side edges of they pilev is completed, releasing the pile'iand carrying it `onto the.

roller tahle 36 by which the pile is conveyed to end trimming shears 37. Wliiohoperate in. a. manner'illustrated in theprior art, to trim the iront and rear ends ot` the pile to the desired length,.the trimmed pile being then conveyedby a roller table through anon*` tinuous open annealing furnace 39 andwthen` successively thnough a rolierlevelei' 40 and a loosening and opening apparatus 41 which;

may comprise staggered pairs ot rolls 42 which alternatelyyhend the pile directions to loosen the sheets.

This opening device may include a knife 431 located Within a gu1de144, the .pile being dravvnl through this guide and over the knife.

by the rolls 45 which `separate the sheets oi the pile and pass the saine onto a roller table 46 hv which the sheetslare conveyedto` a cooling table `47 of any usual and Well known design. i

In rolling sheetsllighter than 22 gaugmthe apparatus isv slightly different, :trom that ahove deseribedV after the pile: is.` `passed through the reheatingfurnace 29. Thepile of light sheets after emerging from the furnace 29 is placed upon an automaticrdoublen a pusher 48 or the like being; used forV this purpose. This doubler comprisesa table 50, one-halt` of Which7 as indicated at 51is yin opposite` hinged at the center as at 52, a magnet 53 being carried by each'half of the table, close -to the hinge joint.

As the pile is placed .upon this table it engages a stop which automatically energizes the magnets` 53, holding the pile rigid upon the table at points close to the hinge jolnt. At the same time a clutch, connecting a suitable motor with the rocker shaft 54, is thrown in, rotating this rocker shaft in the direction of the arrow shown in Fig. 14. This rocker shaft carries a rocker arm 55 connected, by a link 56, with the hinged section 51 of the doubler table throwing this hinged section into the position shown in dot-ted lines in Fig. 14 and since the pile is held by the magnets, only at points close to the hinge, the free' ends of the sheets in the pile are permitted to open as the pile is doubled, forming a pack as illustrated at 57 in Fig. 14.

Vhen the hinged section of the doubler table reaches the position shown in dotted lines in Fig. 14 fit engages a stop which changes the clutch connection returning the hinged section to the normal position and at the same time the magnets are automatically deenergized and the pusher 48 operated to move the pack from the doubler and upon a roller table 58 by which it is conveyed through a continuous open sheet furnace 59 and thence to' the first stand 60 of a second series of finishing rolls. i The upper roll 6l of this stand is preferably of larger diameter than the lower roll in order to flatten the forward end of the heated pack as itis well known that there is a tendency for this fori vward end of the pack to bend or curve upward as it emerges from the furnace. The pack is then conveyed through a series of alternate edge straightening rolls `62 and finishing rolls 63, each edge straightening roll being considerably smaller in diameter than the finishing rolls and being smaller at its center than at its ends so that the edges of the pack will be rolled down without l striking the center of the lpack and taking out the form of the preceding rolls, thus placing the pack in the next stand of finishing rolls as near to itsoriginal condition as possible and without breaking the pack open.

Thepack is then conveyed through a side shearing apparatus 34a and end shearing ap-` y paratus 87 similar to the Ashearing apparatus 34 and 37 above described and then through a loosening and opening apparatus `IIA-45a similar to the apparatus 41-45 abovedescribed and thence to a cooling table 47 of any usual construction."

Thisr application is a division of my copending application for improvements in continuous sheet rolling apparatus and method,V Serial Number 73,597, tiled December 7, 1925.

I claim l. 'Ihe method of continuous rolling of sheets from bars and the like which consists in passing heated barsv successively through a. series of roughing mills, matching and reheating the reduced bars, passing them through a second series of roughing mills, again matching and reheating them, and passing the matched piles through a series of iinishing mills, all in a single continuous pass.

2. The method of continuous rolling of sheets from bars and the like which consists iu passing heated bars successively through a. series of roughing mills, matching and reheating the reduced bars, passing them through a second series of roughing mills, again matching and reheating them, passing the matched piles through a series of iinishing mills, doubling and reheating the piles, and `passing the double packs through a second series ot inishing mills, all in a single continuous pass.

3. The method of continuous rolling of sheets from bars and the like which consists in passing heated bars successively through- In testimony that I claim the above, I have hereunto subscribed my name.

WILLIAM MQ BLECKER.

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