US1759625A - Apparatus for handling sand in foundries - Google Patents

Description

M y 0, 1930. w. E. NAYLOR 1,759,625

APPARATUS FOR HANDLING SANE IN FOUNDRIES Fil ed Feb. 7, 1927 4 sheets-sheet 1 Y WJE. NAYLOR I 1,759,625

APPARATUS FOR HANDLING SAND IN FOUNDRIES Filed Fe 1927 4 Sheets-Sheet 2 :ffiuentoni, F] Wm ?7 w May 20, 1930. V wfE. NAYLOR 1,759,525

I APPARATUS FOR HANDLING SAND IN FOUNDRIES Filed Feb. 7, 1927 4 Sheets-Sheet 5 fizz/(gators,

W. E. NAYLOR May 20, 1930.

APPARATUS FOR-HANDLING SAND Il FOUNDRIES Filed Feb. 7, 192"? 4 SheetsSheet to deliver the flasks to carry Patented Mayze, ieao un t-an s rras WALTER E. NAY-LOR, OF CHICAGO, ILLINOIS, [LSSIGNOB TO THE BEARDSLEY 8t PIPER COMPANY, OF CHICAGO, ILLENOIS, A CGRPQBATIQN OF ILLINGIS APPARATUS non tenements. seem n FOUNDBIES Applicationfile'd Fehruary 7, 1927. Serial No. 166,342.

In connection withthe operation of moulding machines, turn-tables are sometimes used them awayfrom the mould-fllling machine. In the filling operation, it is customary to deliver an excess of sand in the flask and then strike off the excess to insurethe complete filling of the flask. It

'10 also occurs in practice thatconsiderable sand is spilled, either through misplacement of the flask or on account ofthe movements of the discharge head of the filling machine, particularly when the machine is of the sand-slinger type in which the head is horizontally mov-- able over the flasks to effect delivery ofthe i sand under pressure into all portions of a flask. This results in spillin g of considerable sand on the turn-table.

Theprimary object of the'invention is to provide a turn-table adapted for use with mouldingmachines,inwhichprovisionismade for expeditiously removing the spill to prevent it frominterfering'with the free use of the turn-table and for recovering it for redelivery to the moulding'machine if desired;

Other objects ofthe invention will appear from the detail description.

The invention consists in the several novel features hereinafter set forth and more particularly defined by the claims at the conclusion hereof. I v

In the drawings: Fig. 1 is a side elevation of apparatus embodying the invention, the

moulding room floor and pit therein being showin in section. Fig. 2 is a plan,parts being broken away to show the driving mechanism for the turn-table. Fig.3 is a section through the turn-table, taken on. line'3'-3 of Fig. 2. Fig. 4 is a perspective of a portion of the turn table frame and the stationary-sand receiver below it. Fig. 5'is ase'ction taken on line 5-5 of Fig. 3; Fig. 6 is-a section taken on line 66 of Fig. 3.

The invention is exemplified in connection" with the floor a of a moulding room; a moule ing machine B of the projector or sand-slinger type which comprises a projector headwith a casing 6 containing ahigh speed rotor for projecting sand vertically downward, the

head being mounted on an arm 7) which is pivoted to the distal end of a jib b which is pivoted to swing horizontally on astationary standard b so as .to permit the head b'to be moved horizontally in any 'direction'to dis charge the sand into all portions of a subjacent flask; a turn-table C adapted to bring flasks into and out or" receiving positions be-' neath the projector head; a pit D at the top of which the turn-table is mounted; a sand receiver E beneath the turn-table; power'driven mechanism for driving the turn-table; and a conveyor G for conveying sandtrom the receiver E to any desired point for re-distribu tion. The moulding'machine B illustrated isof the type exemplified in Patent No. 1,809,- 833 granted to Beardsley and Piper J uly'15,

assent-It 1919, andthe particular construction thereof forms no part of the present invention.

. The'walls and floor offthe pit D and the floor a of the moulding room are constructed of concrete; Plates d, cl, d (Z form a sec,-

tional cover or top for the pit which permit access thereto when'ne'cessary, I This top is formed witha hole d over, and concentric with, the turn-table C. The function of'the turn-table is to supportflasks and to convey them within the range of the mould ng 'ma chine and to convey the filled flasks away from p I ably formed of a metallicchannel; a circular inverted rail 0 adapted'to run on rollers 0" which are journalled on axlesc which are supported by brackets 0 in the pit D; acrossbar 0 preferably an I-beam, having its ends fixedly secured by means of angle plates 0 to the ring 0; and bars 0 preferably I- 'beams, extend between and are secured to the center of'the cross-bar c and tothe ringc 7 by means of angle plates a Q The top of the turn-table is disposed approximately, at the level of the floor and consists of a grid formed of bars 0 separated by spacing sleeves i0 and secured together by bolts 0 This. grid is formed of; quadrantal sections which are laid upon and supported by the bars c 'and Qof being permitted to cumulate 0n the turni table. The sectional formation permits th gridptobe readily lifted out of the ring when access'to the subj acentpar'ts is desired. 7

I The-turn-table is constantly rotated by the driving mechanism F which comprises an electric motor f, the shaft of which is pro- 'vided with apinion f a belt and pulley type of variable speed gearing f driven by a gear f "which meshes With-the pinion f and enclosed reducin gearing f, driven by the gearing 7' bevelled gearing f driven through the shaft f? by the'speed reducing mechanism 7 and I enclosed in a case ff; a pinion f driven bysaid bevelled gearing; and a gear-r1ng f engaged and driven by the pinion f and secured tothe outer periphery of thering c of the turn-table.

This exemplifies means fordriving the turntable with its grid top at dilierent speeds. lThesand receiveriE under the turn-table is adapted. to receive the sand which passes through the grid, and comprises a bottom plate e stationarilyj supportedfrom the floor of the pit D by a suitable framework 6 anda marginal, vertical flange 'or ring '6 fixedly secured to the bottom platee. A radially ex tending. discharge opening 6 isformed in the bottom plate 6, through which the sand will be discharged.

The sand passing through all portions of the turn-table grid will be. caught by -the 're-' ce-iver'and will be sliovelled or swept over the slot '6? so that the sand willnot accumulate in the receiver but will be discharged practically as fast as it is received. For the purpose of the bar. 0 and angle barse are secured to the v "bottom of the bars 0 In their rotation, these angle bar's scrape the sand 'over the bottom I caughtby the bars from being deflected out-' 7 shovelling or sweeping thesand from all portions of the receiver to,the;discharge slot 6 an angle bar e -is securedv to the bottom of plate 0 until'it passes through the slot 6 The outer ends of the bars 6 and c areeach provided with a deflector 6 to prevent thesand wardly against the flangeic ofthe receiver;

The'bars e and 6 rotating with the turntable, operate continuously to discharge the sand through slote I r The'mechanism G comprises an endless c'onveyorbelt g and apulley g for one end of the belt, r otatably mounted in brackets g supported on the pit floor beneath the central operation by keepin portion ofthe turn-tablei belt 9 extends longitudinally of the discharge slot eflso that the sand discharged from said slot will be.

caught by the belt and conducted'tothe de sired point for re-delivery to the moulding machine or any other desired distribution.

The operation of the machine :Will-be as follows: flasks'will be placed upon one side of the turn-table grid, which will be continu ously rotated by the mechanism F; as each flask is brought intopositionbeloW the pro-' jector-headb the operator will move the head 7 thereof; duringthis packing, considerable sand will be spilled'and not directed into the flask and an excess of sand will be placed'in the flask; the operator will strike off the 8X57 over the flask'to pack sand into all1portions sola cess from the flask, the spill andstrike-oif sand falling through the grid into the Sta tionary receiver E; the filledjfiaskswillbe 86 consecutively removed from the turn-table as they are filled the sand in the receiver will be conveyed to the-discharge slot 6 so that itwill-fall onto the belt gand conveyed to the desired pointior refdelivery to the mouldnn machine orctherwise,

The invention exemplifies turn-table apparatus in which the turn-tablecomprises a grid on which the flasks are supported and through. which the sand Willfall nto a re ceiver, from which will be discharged to a conveyor for re-distribution.

As the result of the use of a grid, no sand is permitted to c'umulateon theturniable to interfere with the filling, placement, and reoff sand are convenientlyfdisposedof. The

x10 l moval of the flasks, and the spill and strike mechanismisot such a characterthatit v well ada Jted to onerate underneath a mouldr V. V 9' the turn-tab e free from ing room floor and facilitates the moulding strike-off sand and spill The, invention is not I g to be understood as restricted to the detailsiset forth, since these may be modifiedwithin the's'cope of the ap-;

pended claims, without departing from the spirit and scope of the invention. V 7

Having thus described the inventiomwhat I claim as new and desire to secure by Letters Patent,-is: 7 v I 1. In an apparatus of the character described, the combination with a floorha-ving an opening therein, ofa turn-table positioned in said openingand having the top thereof exposed so that 'fiaslrs may be placed thereon for filling purposes and removechsaid turntable having openings through whichthe displaced flask-filling material will pass in lieu of cumulating thereon, mechanism for rotat i 7 ing theturn-table, and means under the table for catching the material that passesthere-Q through.

111 an PParatiis of .tliebharacter scribed, the combination with a floor having an opening thereim of a turn-table disposed in the opening and exposed so that flasks may be placed thereon for filling purposes and removed, said turn-table having openings therein through which the displaced flask-fillings tially flush with saidfloor, said table being exposed so that flasks may be placed thereon for filling purposes and removed and comprising a grid through which the displaced flask-filling material willpass in lieu of cumulating thereon, mechanism for rotating the turn-table, stationary means under the grid for catching the material that passes therethrough,and means for conveying said material from the catching means.

4;, In an apparatus of the character described, the combination with a floor, of a turn-table associated with the floor, and exposed so that flasks may be placed thereon for filling purposes and removed, said turntable comprising a grid of removable sections through which sand will pass in lieu of onmulating thereon, mechanism for rotating the turn-table, and means under the grid for catching the sand that. passes therethrough.

5. In an apparatus of the character described the. combination with a floor, of a turn-tabie associated with the floor and having an opening therein through which sand will pass, mechanism for driving the turntable, a sand receiver under the table having a discharge opening, and means operated by the turn-table or moving the sand in the receiver, to discharge it through said opening in the receiver.

6. In an apparatus of the character deroom floor provided with an opening and a I pit under said opening, of a turn-table 'in the opening and substantially flush with the floor comprising a ring, bars in the ring,

and a sectional grid removably held in the ring and on said bars, said grid being adapted to support flasks and permitting sand to pass therethrough into the pit, and mechanism in the pit for driving the turn-table.

9. In an apparatus of the character described, the combination with a floor, of a V turn-table associated with the floor and comprising a ring, bars in the ring, and a sectional grid removably held in the ring and on said bars,'mechanism for driving the turn table, a stationary sand receiver under the grid, and means on the bars for moving the sand in the receiver.

10. In an apparatus of the character de scribed, the combination with a moulding room floor provided with'an opening and a pit under said opening, of a turn-table in the pit and adjacent the floor comprising a 7 grid for supporting flasks and through which sand will fall, mechanism for driving the turn-table, a sand receiver under the grid having a dischar 'e slot therein, and means a on the turn-table for conveying sand inthe receiver to the slot. I 1

11. In an apparatus of the character described, the combination with a moulding room floor provided with an opening and a pit under said opening, of a turn-tables in the pit and adjacent theifloor comprising a grid for supporting flasks and through which sand will fall, a roller-supported ring, and bars in the ring, mechanism for driving the turn-table, a stationary sand-receiver under the grid comprising a plate having a slot thereimmeans on the bars for conveying sand on the plate to the slot, and a conveyor for clarrying oif thesand passing through the s ot.

Signed at Chicago, Illinois, this 21st day of January, 1927.

WALTER E. NAYLOR. I

turn-table associated with the floor and 'comturn-table, a stationary sand receiver under the grid having a discharge opening, and means rotatable with the turn-table for movin the sand in the receiver to said opening. 1 In ,an apparatus of the character described, the combination with a moulding room floor provided with an opening and a pit under said opening, ofa turn-table in the opening and substantially flush with the floor comprising a ring, and a' grid in the ring, said grid being adapted to support flasks and permitting sand to pass therethrough into the pit, rollers in the pit for supporting the ring, and mechanism forvdriving the turn-table.

8. In an apparatus of the character de scribed, the combination with a moulding i

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